GB2582051A

GB2582051A - An improved thermostatic valve and a thermostatic faucet

Info

Publication number: GB2582051A
Application number: GB1918799.6A
Authority: GB
Inventors: Wenrong Lu
Original assignee: PPI Xiamen Industry Co Ltd
Current assignee: PPI Xiamen Industry Co Ltd
Priority date: 2019-01-31
Filing date: 2019-12-19
Publication date: 2020-09-09
Anticipated expiration: 2039-12-19
Also published as: CN109695744A; GB201918799D0; CN109695744B; GB2582051B

Abstract

A thermostatic valve and a thermostatic faucet comprising a valve body 1, a thermostatic assembly 2 and a flow control assembly 3. The valve body comprises a hollow chamber, first supporting portion 11 and sleeve portion 12. It further comprises a cold fluid inlet 13, a hot fluid inlet 14 and a mixed fluid outlet 15. The flow control assembly 3 is arranged at the top of the valve body 1 and may be isolated from the thermostatic assembly 2. The flow control assembly 3 comprises a dynamic ceramic disc 32, a static ceramic disc 31 and a rotating sleeve 33. The discs are located around the sleeve portion 12. Through rotating the rotating sleeve 33 of the flow control assembly 3, the dynamic ceramic disc 32 is driven and rotates axially relative to the static ceramic disc 31, thus changing the flow of the mixed fluid running through the water through groove and the flow channel.

Description

AN IMPROVED TTIF.RMOSTATTC VALVE AND A THERMOSTATIC FAUCET The present invention relates to a thermostatic valve, also known as a thermostatic cartridge to control the flow of hot, cold and selectively mixed water, and a thermostatic faucet comprising the thermostatic valve as above.

The thermostatic valves for the mixing faucets on the market as disclosed in the patent literature CN101523322A, can control the flow and temperature respectively. According to the description in the patent literature, LP0936524A (the US patent family is US6085984) more concretely reveals the working principle of the thermostatic valve, i.e., the thermostatic assembly is partially filled with a material which expands as temperature increases, and drives the piston to shift along the axis relative to the body. However, in reality, when we need to adjust the temperature of the valve, the flow rate of the valve will also change. The reason is because the screw fitting to control the temperature in the valve coaxiall y nests with the body used for flow control, moreover, an 0-ring is arranged between the outer wall of the screw fitting and the inner wall of the body, which adds to the frictional contact between the screw fitting and the tube wall of the body. When the screw fitting is rotated to adjust the temperature, the body used to control the How will also produce some slight angular changes, resulting in the corresponding changes in the flow, and vice versa. In view of this, the present inventors conducted intensive studies on the above-mentioned drawbacks in the prior arts, and the present disclosure has been produced.

A first objective of the present invention is to provide a thermostatic valve capable to achieve temperature and flow rate adjustment. When the thermostatic valve adjusts the temperature, it will have no influence on the flow control assembly, and conversely, when flow control assembly adjusts the flow, it will have no influence on the thermostatic assembly.

A second objective of the present invention is to provide a thermostatic faucet using the above thermostatic valve.

According to one aspect of the present invention, the thermostatic valveincludes: a valve body having a hollow chamber and a first supporting portion on the top. A plurality of water through holes arc provided on the top of the valve body, and from the central of the first supporting portion and extending upward, a sleeve is provided. A first water inlet for a cold fluid to flow into, a second water inlet for a hot fluid to flow into and a water outlet for a mixed fluid to flow out are provided on the lateral wall or at the bottom of the valve body, while a first water channel 1 and a second water channel are isolated from each other in the chamber of the valve body. The first water channel is in communication with the first water inlet and the second water inlet, while the second water channel is in communication with the water outlet. the first water channel and the second water channel are used for the mixed fluid F3 to flow into.

A thermostatic assembly is arranged in the sleeve of the valve body. Through the thermostatic assembly, it can adjust the openings of the first water inlet and the second water inlet, and subsequently a mixed ratio of a cold fluid and a hot fluid is adjusted flowing into the chamber of the valve body, leading to the temperature control of the mixed fluid; A flow control assembly is arranged on the first supporting portion of the valve body, comprising a static ceramic disc, a dynamic ceramic disc and a rotating sleeve. The static ceramic disc, the dynamic ceramic disc and the rotating sleeve are all provided with a first through hole, and through the first through hole, the static ceramic disc, the dynamic ceramic disc and the rotating sleeve are sleeved on an outer side of the sleeve from bottom to top. The static ceramic disc is provided with a water through groove, while the dynamic ceramic disc is provided with a flow channel and a sealing surface. One end of the flow channel and the sealing surface are arranged on an end surface of the dynamic ceramic disc facing the static ceramic disc. The dynamic ceramic disc is in surface contact with the static ceramic disc. The dynamic ceramic disc is driven by the rotating sleeve and rotates axially relative to the static ceramic disc, which changes the flow rate of the mixed fluid flowing through the water through groove and the flow channel.

Through the thermostatic valve, the mixed fluid 13 flows into the first water channel, and then flows into the water through groove of the static ceramic disc and the flow channel of the dynamic ceramic disc, afterwards flows into the second water channel and finally flows out of the water outlet.

With the above structure, the flow control assembly is arranged outside the sleeve of the valve body, while the thermostatic assembly is arranged inside the sleeve of the valve body. The flow control assembly and thermostatic assembly have no any physical contact, i.e., when the flow control assembly is used to adjust the flow through rotating the rotating sleeve, it has no interference with the thermostatic assembly. Similarly, when the thermostatic assembly is used to adjust the temperature of the mixed fluid in the valve body, it has no interference with the flow control assembly.

Further, in one embodiment of the present invention, it discloses that the upper end face and lower end face of the water through groove of the static ceramic disc are penetrated through each other, and an oil storage groove is also provided on an end surface of the static ceramic disc facing the dynamic ceramic disc. A plurality of first fixed slots are provided at the bottom or on the side wall of the static ceramic disc to engage with the first supporting portion of the valve body. The first fixed slots are engaged with a plurality of the first clamping points on the first supporting portion of the valve body. The flow channel of the dynamic ceramic disc is an arc-shaped groove with the depth gradually changed from shallow to deep. The arc-shaped groove does not make the upper end face and the lower end face of the dynamic ceramic disc penetrated through each other, moreover, a plurality of second fixed slots are provided on the outer side or on the top end surface of the dynamic ceramic disc. The rotating sleeve is provided with a plurality of second clamping points at the positions opposite to the second fixed slots, and the second clamping points are engaged with the second fixed slots of the dynamic ceramic disc, ensuring no relative-rotation between the rotating sleeve and the dynamic ceramic disc.

Through the engagement of the static ceramic disc and the dynamic ceramic disc, a water channel of with adjustable flow area is formed between the contact face of the static ceramic disc and the dynamic ceramic disc, and the outflow end of the water channel and the second water channel are in communication with each other. The water finally flows out of the water outlet.

According to one aspect of the present invention, it also discloses a thermostatic faucet comprising a housing, a handle, and a temperature adjustment assembly. The housing of the thermostatic faucet is provided with the thermostatic valve. The handle is fixed to the rotating sleeve and used to control the flow control assembly. The temperature adjustment assembly is used to control the thermostatic assembly.

Further, the chamber of the housing is hollow. The housing has a closed bottom and an opened end at its top. in the middle the housing along the radial direction, a first water inlet channel for the cold fluid to flow in, a second water inlet channel for the hot fluid to flow in, and at least one water outlet channel for the mixed fluid to flow out are provided; the first water inlet channel is in communication with the first water inlet of the thermostatic valve, the second water inlet channel is in communication with the second water inlet of the thermostatic valve, and the water outlet channel is in communication with the water outlet of the thermostatic valve; further, a locking sleeve is included. The locking sleeve is sleeved on the upper end of the thermostatic valve. An external thread is provided on the outer diameter of the locking sleeve, while an internal thread opposite to the external thread is provided on the inner side wall of the open end of the housing. Through screw connection between the locking sleeve and the housing, the thermostatic valve is fixed in the chamber of the housing; the handle is sleeved on an outer side of the rotating sleeve, and the handle and the rotating sleeve have no relative rotation; meanwhile, the outer side wall of the rotating sleeve extends upward and forms two extended buckles. TWO fixed holes are provided on the top end surface of the handle, and the handle is sleeved on the outer side of the rotating sleeve. The extended buckles of the rotating sleeve pass through the fixed holes and are buckled on the top end surface of the handle; the temperature adjustment assembly is fixed on the top knob end of the thermostatic assembly, and the temperature adjustment assembly and the handle have no physical connection.

Further, a positioning structure is provided between the rotating sleeve and the handle, and the positioning structure ensures the handle only be inserted and sleeved on the outer side of the rotating sleeve in a fixed direction along the rotating sleeve.

Further, the taxed hole of the handle is square. The inner side wall of the fixed hole is provided with chamfers; a guiding slope is provided on the top of the extended buckles. The thermostatic facet adopting and using the above thermostatic valve, due to the isolation between the thermostatic assembly and the flow control assembly i.e., the thermostatic assembly being arranged inside the sleeve of the valve body and the flow control assembly outside the sleeve of the valve body, the thermostatic assembly and the flow control assembly are isolated from each other with no physical contact, ensuring that the thermostatic valve, during temperature adjustment, has no influence on the flow control assembly, and similarly, during the flow adjustment, the flow control assembly has no influence on the thamostatic assembly, thus the accuracy of flow and temperature adjustment is ensured.

The detailed description is given as a non-limiting example to better explain what the invention comprises and what can be implemented, and further, the description refers to the accompanying drawings in which: 11G. 1 is an exploded perspective view of the thermostatic valve of the present invention; 11G. 2 is a schematic diagram showing the assembly of the thermostatic valve of the present invention; 11G. 3 is an assembly schematic diagram showing the assembly of the thermostatic valve when the pressing cover of the present invention is removed; 11G. 4 iS a perspective view showing the rotating sleeve of the present invention from two different angles; FIG. 5 is a perspective view of the dynamic ceramic disc of the presenr disclosure from two different angels; FIG. 6 is a perspective view showing the static ceramic disc of the present invention from two different angles; FIG. 7 is a half section view of the thermostatic valve of the present invention in the water-stop state; FIG. 8 is a half section view of the thermostatic valve of the present disclosure in a water-passing state; FIG. 9 is an assembly schematic diagram showing the assembly of the thermostatic valve and the housing of the thermostatic faucet of the present invention; FIG. 10 is a perspective view of the handle and the rotating sleeve of the present invention; FIG. 11 is an assembly schematic diagram showing the assembly of the thermostatic valve and the thermostatic faucet of the present invention

S

The technical solution of the present invention is further described in detail through the following specific embodiments and the accompanying drawings.

As shown in FIG. 1-2, a thermostatic valve 100 comprises a valve body 1, a thermostatic assembly 2, and a flow control assembly 3. The valve body 1 has a hollow chamber and a first supporting portion 11 on the top of the valve body 1. A plurality of water through holes 111 are provided for the first supporting portion 11, and in the middle of the first supporting portion 11 extending upward, a sleeve 12 is provided; on the outer side wall or at the bottom of the valve body 1, a first water inlet 13 for the cold fluid F1 to flow into, a second water inlet 14 for the hot fluid F2 to flow into and a water outlet 15 for the mixed fluid to flow out are provided. In the embodiment of the present invention, the first water inlet 13, the second water inlet 14 and the water outlet 15 are all arranged on the outer side wall of the valve body 1, moreover, the outer wall of the valve body 1 is also sleeved with a first filter net 16 and a second filter net 19 at the positions relative to the first water inlet 13 and the second water inlet 14, meanwhile, a first water ch2uanel 1 and a second water channel 11 isolated from each other and used for the mixed fluid 13 to flow into, are formed in the chamber of the valve body 1. The first water channel I is in communication with the first water inlet 13 and the second water inlet 14, also the second water channel II is in communication with the water outlet 15.

A thermostatic assembly 2. The thermostatic assembly 2 is arranged in the sleeve 12 of the valve body 1, and through the thermostatic assembly 2, the openings of the first water inlet 13 and the second water inlet 14 are adjusted, and subsequently the mixed ratio of the cold fluid Fl and the hot fluid F2 flowing into the chamber of the valve body 1 is adjusted, thereby the temperature control of the mixed fluid 1e3 is adjusted. The present invention is not limited to a particular type of thermostatic assembly 2. jf he thermostatic assemblies and temperature sensing elements that make the thermal expand and extract adaptive to the temperature or the mixed fluid thereby adjusting the openings of the first water inlet 13 and the second water inlet 14, are all within the scope of the thermostatic assembly 2 of the present invention. The detailed thermostatic assembly can be found in U36085984, U320090314844A1, US20180364745A1, F,P1235129A1. The above embodiment further discloses that the first water inlet, the second water inlet and the water outlet of the valve body can be arranged not only on the outer side wall of the valve body but also at the bottom of the valve body. The specific structure of the thermostatic assembly 2 of the present embodiment will be briefly described below.

As shown in 111G. 1, NG. 7 and FIG. 8, the thermostatic assembly 2 comprises a cartridge screw 21, a sliding sleeve 22, a temperature probe 23, a temperature probe connecting seat 24, a fixed seat 25, and a movable sleeve 26 and a first spring 27. The cartridge screw 21 is sleeved in the sleeve 12, and its knob end 211 of extends out of the sleeve 12 and is axially fixed through the C-shaped snap ring 29. The lower end of cartridge screw 21 and the sliding sleeve 22 are bolt jointed, and through rotating the cartridge screw 21, the sliding sleeve 22 is driven and shift axially along the sleeve 12.A second spring 28 is arranged between the temperature probe connecting seat 24 'and the fixed seat 25, and through the claw 241 at the bottom of the temperature probe connecting seat 24, the second spring 28 is buckled with the clamping slot 251 formed on the inner side wall of the fixed seat 25, which equips the temperature probe connecting seat 24 with a certain distance to travel between it and the fixed seat 25 after the temperature probe connecting seat 24 overcoming the elastic force of the second spring 28. The movable sleeve 26 is sleeved on the outer side wall of the temperature probe connecting seat 24 and the fixed seat 25; one end of the first spring 27 abuts against the bottom of the claw 241 at the bottom of the temperature probe connecting seat 24, while the other end of the first spring 27abuts against the end face of a scaling seat 18. The sealing scat 18 is fixed to the bottom of the valve body 1 through screw connection; One end of the temperature probe 23 is limited through the temperature probe connecting seat 24, and the other end of the temperature probe 23 is movably abutted against the bottom of the sliding sleeve 22. When the hot fluid F2 flowing into the valve body 1 becomes excessive, the temperature of the mixed fluid F3 will be too high, at this point, the temperature probe 23 is thermally expanded, and drives the temperature probe connecting seat 24 mid the fixed seat to move downward, which changes the axial position of the movable sleeve 26 relative to the inner wall of the valve body 1, thereby changing the openings of the first water inlet 13 and the second water inlet 14, increasing the opening of the first water inlet 13 for the cold fluid Fl to flow into, and decreasing the opening of the second water inlet 14 for the hot fluid F2 to flow into, thereby adjusting the temperature of the mixed fluid F3 formed in the inner cavity of the valve body 1.

As shown in FIG. 1 a flow control assembly 3 is provided on the first supporting portion 11 of the valve body 1. The flow control assembly 3 comprises a ceramic a static ceramic disc 31, a dynamic ceramic disc 32 and a rotating sleeve 33; the static ceramic disc 31, the dynamic ceramic disc 32 and the rotating sleeve 33 are all provided with a first through hole A, and through the first through hole A, the static ceramic disc 31, the dynamic ceramic disc 32 and the rotating sleeve 33 are sleeved on an outer side of the sleeve 12 from bottom to top. As shown in FIG. 6, the static ceramic disc 31 is provided with a water through groove 311. The upper end face and lower end face of the water through groove 311 of the static ceramic disc 31 are penetrated through each other, and the water through groove 311 is split into a first water through groove 311a and a second water through groove 311b isolated from each other. The first water through groove 311a and the first water channel 1 are in communication with each other, and the second water through groove 31Ib and the second water channel II are in communication with each other; meanwhile, a plurality of first fixed slots 313 engaged with the first supporting portion 11 of the valve body 1 are provided at the bottom or on the side wall of the static ceramic dis 31,and due to the engagement between the fixed slots 313 and a plurality of first clamping points 112 on the first supporting portion 11 of the valve body 1, the static ceramic disc 31 does not rotate relative to the valve body 1; due to the surface contract between the dynamic ceramic disc 32 and the static ceramic disc 31, it is preferable to arrange an oil storage groove 312 on an end surface of the static ceramic disc 31 facing the dynamic ceramic disc 32. The lubricating grease is injected into the oil storage groove 312 to make smoother rotation between the dynamic ceramic disc 32 and the static ceramic disc 31. In order to prevent the mixed fluid 13 from oozing from the clearance between the static ceramic disc 31 and the first supporting portion 11, a sealing gasket 314 is further added between the static ceramic disc 31 and the first supporting portion 11.

As shown in FIG. 5, the dynamic ceramic disc 32 is provided with a flow channel 321 and a sealing surface 322, and an end of the flow channel 321 and the sealing surface are arranged on an end surface of the dynamic ceramic disc 32 facing the ceramic static ceramic disc 31. The flow channel 321 provided by the embodiment is an arc-shaped groove 321 with the depth gradually changed from shallow to deep, and the arc-shaped groove 321 does not make the upper end face and lower end face of the dynamic ceramic disc 32 penetrated through each other, meanwhile, in order to further ensure the strength of the arc-shaped groove 321, a plurality of reinforcing ribs 324 are provided in the arc-shaped groove of the dynamic ceramic disc 32; moreover, due to the depth of the arc-shaped groove 321 from shallow to deep, the bottom wall thickness of the arc-shaped groove 321 is not completely the same. The reason is because the dynamic ceramic disc 32 is pressed by the dry powder and sintered, therefore, if the bottom wall thickness is not uniform, the thicker wall portion is not dense enough then, which easily results in slight water seepage problems. Therefore, it is preferable to have an arc-shaped sinking groove 325 with its depth from deep to shallow located on the end face opposite to the shallow position of the arc-shaped groove 321, ensuring an uniform bottom thickness of the arc-shaped groove; a plurality of second fixed slots 323 are provided on an outer side or on the top end surface of the dynamic ceramic disc 32, and the rowing sleeve 33 is provided with a plurality of clamping points 3342 at the positions opposite to the second fixed slots 323. Through the engagement of the second clamping points 3342 and the second fixed slots 323 of the dynamic ceramic disc 32, the rotating sleeve 33 and the dynamic ceramic disc 32 have no relative rotation. It should be noted that if some sealings are added to make the dynamic ceramic disc 32 and the rotating sleeve 33 seen as one unit. It should be noted that for the present invention, it is not necessary to require that the upper and lower end faces of the arc-shaped grooves 321 of the dynamic ceramic disc 32 he penetrated through each other, and in fact, they can be partially penetrated through. At this point, the flow channel 321 is partially located inside the dynamic ceramic disc 32 and is also partially located in the flow channel formed between the hollow portion of the arc-shaped groove 321 of the dynamic ceramic disc 32 and the rotating sleeve 33.

As shown in FIG. 4, the rotating sleeve 33, from top to bottom, has a small diameter end 333 and a large diameter end 334. The small diameter end 333 has a limiting rack 3331 to prevent the handle from idling. At the bottom of the outer side wall of the large diameter end 334, a first limiting point 331 and a second limiting point 332 angularly spaced are provided, moreover, at the side wall of the large diameter end 334 a short side wall 3341 is formed between the first limiting point 331 and the second limiting point 332, and a plurality of second clamping points 3342 are arranged at the bottom of the large diameter end 334. A flange 114 is formed on an outer diameter end of the first supporting portion 11, and the flange 114 extends upward along the side wall of the outer diameter end of the first supporting portion 11 and form a limiting column 113. Two snap-fit points 115 are formed on the side wall of the first supporting portion 11, moreover, the rotating sleeve 33 is rontionally sleeved on the outer diameter end of the first supporting portion 11, and the first limiting point 331 and the second limiting point 332 abut against the flange 114 of the first supporting portion 11. The bottom of the shorter side wall 3341 and the top of the limiting column 113 abuts against each other, meanwhile, in order to ensure that the rotating sleeve 33 not he axially displaced from the outer diameter end of the first supporting portion 11, an annular groove can be formed at the outer diameter end of the first supporting portion 11. A plurality of radial bumps can be formed in the inner side wall of the rotating sleeve 33, which nests the radial bumps in the annular groove and make the rotating sleeve only rotate along the central axis of the first supporting portion 11; or, as shown in FIG. 3, a pressing cover 34 is added on the top of the rotating sleeve 33, and at the top of the pressing cover 34 a blocking edge 341 is provided. The outer side wall of the pressing cover 34 is respectively provided with two second through holes B opposite to the snap-fit points 115 of the first supporting portion 11, and a notch groove 342 used to insert the limiting column 113. The pressing cover 34 is sleeved on the large diameter end 334 of the rotating sleeve 33, and through the notch groove 342, the pressing cover 34 is fixed with the limiting column 113 of the first supporting portion, making it convenient for the two through holes of the pressing cover 34 and the two snap-in points 115 of the first supporting portion 11 to engage with each other, ensuring the blocking edge 341 of the pressing cover 34 be opposite to the top end surface of the large diameter end 334 of the rotating sleeve 33. Also, to prevent rotational friction between the pressing cover 34 and the rotating sleeve 33 directly. A wear pad 343 is provided between the blocking edge 341 of the pressing cover 34 and the top end surface of the large diameter end 334 of the rotating sleeve 33.

The outer side xvall of the valve body 1 is provided with a third clamping point 116 for nesting with a housing of water outlet body. Tn this embodiment, the third clamping point 116 is arranged on the outer side wall of the first supporting portion 11.

The working principle of the thermostatic valve is as follows: the temperature of the mixed fluid P3 in the thermostatic valve is adjusted by rotating the knob end 211 on the top of the cartridge screw 21: through rotating the rotating sleeve 33, the dynamic ceramic disc 32 is driven and rotate in the axial direction relative to the static ceramic disc 31, which changes the flow rate of the mixed fluid 113 running through the water through groove 311 and the flow channel 321. The mixed fluid F3 flows into the first water through groove 311a of the static ceramic disc 31 through the first water channel I, and then flows into the chamber of the flow channel 321 of the dynamic ceramic disc 32. As shown in FIG.?, when the flow channel 321 of the dynamic ceramic disc 32 and the second water through groove 31113 of the ceramic stator 31 are in communication with each other, the mixed fluid F3 flows into the second water channel IT, and finally flows out the water outlet 15. 'through rotating the dynamic ceramic disc 32, the flow cross-sectional area that the arc-shaped groove 321 of the ceramic rotor 32 have to accommodate the mixed fluid F3 is changed, and thereby, the flow is adjusted. When the sealing surface 322 of the dynamic ceramic disc 32 and the second water through groove 311b of the static ceramic disc 31 are overlapped, water sealing-up is achieved by the thermostatic valve 100.

In order to achieve the second objective of the present Invention, in one embodiment of the present invention also discloses a thennostatic faucet. As shown in FIGS.9-11, the thermostatic faucet comprises a housing 200, a handle 300, a locking sleeve 400, a temperature adjustment assembly 500, and the above-mentioned thermostatic valve 100. The housing 200 has a hollow chamber. Its bottom is closed, and it has an open end at its top. In the middle of the housing 200 along a radial direction, a first water inlet channel 201 is arranged for the cold fluid Fl to flow in, a second water inlet channel 202 for the hot fluid 12 to flow in, and also at least one water outlet channel 203 for the mixed fluid 13 to flow out. The present embodiment has two water outlet channels 203 for the mixed fluid 1,3 to flow out. the thermostatic valve 100 is sleeved in the chamber of the housing 200. The first water inlet channel 201 and the first water inlet 13 of the thermostatic valve is in communicated. The second water inlet channel 202 and the second water inlet 14 of the thermostatic valve 100 is in communicated. The two water outlet channels 203 provided for the housing 200 are communicated with the water outlet 15 of the thermostatic valve 100. A plurality of sealing rings 17 are provided at the first water inlet 13, the second water inlet 14 and the water outlet 15 of the valve body 1 of the thermostatic valve 100 to prevent the water seepage from the clearance between the thermostatic valve 100 and the housing 200; the locking sleeve 400 which is sleeved on the upper end of the thermostatic valve 100, in the present embodiment, is sleeved on the pressing sleeve 34. the outer diameter of the locking sleeve 400 has an external thread, and opposite to the external thread, an internal thread is provided on the inner side wall of the open end of the housing 100. Through screw connection between the locking sleeve 400 and the housing 100, the thermostatic valve 100 is fixed in the chamber of the housing 100; the handle 300 is sleeved on the outer side wall of the rotating sleeve 33,and a plurality of toothed bar 301 are formed on the inner chamber wall of the handle. A plurality of limiting racks 3331 are formed on the outer side wall of the rotating sleeve 33, and through the gripping between the toothed bar 301 and the limiting racks 3331, the handle 300 and the rotating sleeve 33 are interlocked, which prevents the relative-rotation of the handle 300 and the rotating sleeve 33; meanwhile, in order to sleeve the handle 300 on the outer side of the rotating sleeve 33 in a fixed direction, a positioning structure is arranged between the rotating sleeve 33 and the handle 300. in one embodiment of positioning structure has a limiting lug boss 302 provided on the chamber wall the handle 300, while opposite to the limiting lug boss 302, a retaining concave 3332 is provided for the rotating sleeve 33. Through the engagement between the limiting lug boss 302 and the retaining concave 3332, the handle 300 can only be inserted in a fixed direction of the rotating sleeve 33 and sleeved on the outer side of the rotating sleeve 33, which is convenient for assembly; meanwhile, to ensure that the handle 300 not be easily pulled out from the rotating sleeve 33, the outer side wall of the rotating sleeve 33 extends upward and form two extended buckles 3333. Two fixed holes 303 are provided on the top end surface of the handle 300, and the handle 300 is sleeved on the outer side of the rotating sleeve 33. The extended buckles 3333 of the rotating sleeve 33 pass through the fixed holes 303 and are buckled on the top end surface of the handle 300; meanwhile, to make it convenient for the extended buckles 3333 to pass through the fixed holes 303, it is preferable to design the Fixed holes 303 as square holes with chamfers on the internal wall and arrange a guiding slope 33331 on the top of the extended buckle 3333; the temperature adjustment assembly 500 is fixed on the top knob end of the thermostatic assembly 2, and due to no physical connection between the temperature adjustment assembly 500 and the handle 300, any component does not interfere with each other when working.

The above-described embodiments are illustrative and do not limit this disclosure. Thus, numerous additional modifications and variations are possible in light of the above teachings. For example, elements at least one of features of different illustrative and exemplary embodiments herein may be combined with each other at least one of substituted for each other within the scope of this disclosure and appended claims. Further, features of components of the embodiments, such as the number, the position, and the shape are not limited the embodiments and thus may be preferably set. it is therefore to be understood that within the scope of the appended claims, the dischi)sure of this disclosure may be practiced otherwise than as specifically described herein.

Claims

CLAIMS1. A thermostatic valve, comprising: a valve body having a hollow chamber and a first supporting portion being arranged on the top of the valve body, the first supporting portion having a plurality of water through holes, wherein a sleeve extending upwardly from the central of the first supporting portion; wherein on the outer side wall or at the bottom of the valve body, a first water inlet is arranged for a cold fluid to flow into, a second water inlet is arranged for a hot fluid to flow into, and also a water outlet is arranged for a mixed fluid to flow out, meanwhile, in the chamber of the valve body, a first water channel and a second water channel isolated from each other being formed, the first water channel being in communication with the first and the second water inlets, the second water channel being in communication with the water outlet, the first and the second water channels being used for a mixed fluid to flow out; a thermostatic assembly, wherein the thermostatic assembly is arranged in the sleeve of the valve body, through the thermostatic assembly the openings of the first and the second water inlets being adjusted, and subsequently the mixed ratio of the cold fluid and hot fluid flowing into the chamber of the valve body being adjusted, thereby achieving the temperature control of a mixed fluid; a flow control assembly is arranged on the first supporting portion of the valve body and comprising a static ceramic disc, a dynamic ceramic disc and a rotating sleeve; wherein the static ceramic disc, the dynamic ceramic disc and the rotating sleeve are all provided with a first through hole, through the first through hole the static ceramic disc, the dynamic ceramic disc and the rotating sleeve being sleeved on an outer side of the sleeve from bottom to top; the static ceramic disc are provided with a water through groove, the dynamic ceramic disc are provided with a flow channel and a sealing surface, one end of the flow channel and the sealing surface being arranged on an end surface of the dynamic ceramic disc facing the static ceramic disc, the dynamic ceramic disc in surface contact with the static ceramic disc, the dynamic ceramic disc being driven by the rotating sleeve and rotating axially relative to the static ceramic disc, which changes the flow rate of the mixed fluid flowing through the water through groove and the flow channel; through the thermostatic valve, the mixed fluid flowing into the first water channel, and then flowing into the water through groove of the static ceramic disc and the flow channel of the dynamic ceramic disc, and subsequently flowing into the second water channel, and finally flowing out of the water outlet.
2. The thermostatic valve according to claim 1, wherein the upper end face and the lower end face of the water through groove of the static ceramic disc are penetrated through each other, an oil storage groove being provided on an end surface of the static ceramic disc facing the dynamic ceramic disc, a plurality of first fixed slots being provided at the bottom or on the side wall of the static ceramic disc to engage with the first supporting portion of the valve body, the first fixed slots being engaged with a plurality of the first clamping points on the first supporting portion of the valve body.
3. The thermostatic valve according to claim 2, wherein a scaling gasket is provided between the static ceramic disc and the first supporting portion.
4. The thermostatic valve according to claim 1, wherein the flow channel of the dynamic ceramic disc is an arc-shaped groove with its depth gradually changed from shallow to deep, the arc-shaped groove not making the upper end face and lower end face of the dynamic ceramic disc penetrated through each other, and a plurality of second fixed slots being provided on the outer side or the top end surface of the dynamic ceramic disc, the rotating sleeve being provided with a plurality of second clamping points at the positions opposite to the second fixed slots, the second clamping points being engaged with the second fixed slots of the dynamic ceramic disc preventing the relative-rotation between the rotating sleeve and the dynamic ceramic disc.
5. The thermostatic valve according to claim 4, wherein the arc-shaped groove of the dynamic ceramic disc having a plurality of reinforcing ribs, an arc-shaped sinking groove with its depth from deep to shallow being provided on the end face opposite to the shallow portion of the are-shaped groove, ensuring wall thickness uniformity at the bottom of the arc-shaped groove.
6. The thermostatic valve according to claim 1, wherein the outer side wall of the first supporting portion of the valve body comprising a limiting column, the outer diameter end at the bottom of the rotating sleeve being provided with a first limiting point and a second knifing point angularly spaced, the rotating sleeve when rotating, through the first and the second limiting points, being respectively abutted against the limiting column of the first supporting portion, thereby limiting the rotating angle of the rotating sleeve.
7. The thermostatic valve according to claim t, further comprising a pressing cover being sleeved on the outer diameter end of the rotating sleeve and fixed to the first supporting portion of the valve body, ensuring that the rotating sleeve rotate relative to the cover and not be pulled out.
8. The thermostatic valve according to claim 7, wherein the rotating sleeve having a small diameter end and a large diameter end from top to bottom, the small diameter end having a limiting rack; the bottom of the outer side wall of the large diameter end being provided with a first limiting point and a second limiting point angularly spaced, a shorter side wall being formed between the first limiting point and the second limiting point on the side wall of the large diameter end; a flange is formed on the outer diameter end of the first supporting portion of the valve body, the flange extending upward along the side wall of the outer diameter end of the first supporting portion and forming a limiting column, two snap-in points being formed on the side wall of the first supporting portion, the rotating sleeve being sleeved on the outer diameter end of the first supporting portion, the first limiting point and the second limiting point abutting against the flange of the first supporting portion, the bottom of the shorter side wall abutting against the top of the limiting column; a blocking edge is provided on the top of the pressing cover, the outer side wall of the pressing cover being respectively provided with two second through holes opposite to the snap points of the first supporting portion and a notch groove for inserting the limiting column, the pressing cover being sleeved on the large diameter end of the rotating sleeve, the pressing cover having two through holes, the engagement between the notch groove and limiting column of the first supporting portion making it convenient for the two through holes of the pressing cover and the two snap-in points of the first supporting portion to engage with each other, ensuring that the blocking edge of the pressing cover be opposite to the top end surface of the large diameter end of the rotating sleeve.
9. 't he thermostatic valve according to claim 1, wherein the outer side wall of the valve body is provided with a third clamping point used to nest with a housing of water outlet body.
10.The thermostatic valve according to claim 8, a wear pad is provided between the blocking edge of the pressing cover and the top end surface of the large diameter end of the rotating sleeve.
11.1' thermostatic faucet, comprising a housing, a handle, and a temperature adjustment assembly, wherein the housing of the thermostatic faucet is provided with the thermostatic valve according to any one of claims 1 to 10, the handle and the rotating sleeve being fixed and used to control the flow control assembly, the temperature adjustment assembly being used to control the thermostatic assembly.
12.The thermostatic faucet according to claim 11, wherein the chamber of the housing is hollow, the housing having a closed bottom and an open end on the top, in the middle of the housing along a radial direction a first water inlet channel being provided for the cold fluid to flow into, a second water inlet channel being provided for the hot fluid to flow into, and at least one water outlet channel being provided for the mixed fluid to flow out; the first water inlet channel is in communication with the first water inlet of the thermostatic valve, the second water inlet channel is in communication with the second water inlet of the thermostatic valve, and the water outlet channel is in communication with the water outlet of the thermostatic valve; further comprising a locking sleeve, wherein the locking sleeve is sleeved on the upper end of the thermostatic valve, an external thread being provided on the outer diameter of the locking sleeve, while opposite to the external thread, an internal thread being provided on the inner side wall of the open end of the housing, and through screw connection between the locking sleeve and the housing, the thermostatic valve being fixed in the chamber of the housing; the handle is sleeved on the outer side of the rotating sleeve, the handle and the rotating sleeve having no relative-rotation; meanwhile, the outer side wall of the rotating sleeve extending upward and Forming two extended buckles, two fixed holes being provided on the top end surface of the handle, and the handle being sleeved on the outer side of the rotating sleeve, the extended buckles of the rotating sleeve passing through the fixed holes and being buckled on the top end surface of the handle; the temperature adjustment assembly is fixed on the top knob end of the thermostatic assembly, the temperature adjustment assembly and the handle having no physical connection.
13.The thermostatic faucet according to claim 12, wherein a positioning structure is provided between the rotating sleeve and the handle, the positioning structure ensuring that the handle only be inserted and sleeved on the outer side of the rotating sleeve along a fixed direction of the rotating sleeve.
14.The thermostatic faucet according to claim 12, wherein the fixed hole of the handle is square, an internal side wall of the fixed hole being provided with a plurality of chamfers; IS and at the top of each the extended buckles, a guiding slope is provided