CN213871220U - Thermostatic valve core - Google Patents

Abstract

The utility model discloses a thermostatic valve core, which comprises a body, a plunger, a water mixing component, a temperature sensing piece and a driving piece; the body is provided with a water mixing cavity, a hot water inlet and a cold water inlet; the plunger is arranged in the water mixing cavity in a sliding manner so as to adjust the through-flow sections of the cold water inlet and the hot water inlet; the water mixing assembly comprises a water mixing barrel and water mixing sheets, wherein a water mixing communicating channel is arranged in the water mixing barrel, and the water mixing sheets are fixedly connected to the plunger piston and uniformly mix cold water and hot water; the temperature sensing element can be arranged in the body in a sliding manner in a stopping way, and the temperature sensing end of the temperature sensing element is arranged in the water mixing communication channel and expands or contracts according to the water temperature to drive the plunger piston to slide; the driving piece drives the temperature sensing piece to slide so as to adjust the stop position of the temperature sensing piece, thereby adjusting the temperature of the outlet water. The utility model discloses a thermostatic cartridge because the temperature sensing end of temperature sensing spare is located mixes water intercommunication way, and just cold, hot water just reachs the temperature sensing end after mixing water piece and the water mixing barrel is mixed many times for the temperature sensing spare can carry out the self-balancing according to true mixed temperature and adjust, and the leaving water temperature is accurate and stable, and constant temperature is effectual.

Description

Thermostatic valve core

Technical Field

The utility model relates to a bathroom technical field, concretely relates to thermostatic valve core.

Background

The current shower usually uses a thermostatic valve core to realize the function of constant temperature water outlet, and the working principle is roughly as follows: when the water pressure, water temperature or flow of hot water or cold water inlet water changes suddenly, the thermostatic valve core can automatically balance the water inlet proportion of the cold water and the hot water in a short time through the temperature sensing characteristic of the thermosensitive element in the thermostatic valve core, so that the temperature of mixed water can be automatically kept at a set temperature, and water outlet at a constant temperature is realized.

However, the water mixing mode of the constant-temperature valve core on the market is too conventional, the water mixing effect is not good, the water outlet temperature of the valve core is unstable, the shower experience is not good, and the requirement of constant-temperature water outlet cannot be completely met.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the above-mentioned defect or the problem that exist among the background art, provide a thermostatic cartridge, it has better muddy water effect, and the temperature sensing piece can the comparatively accurate temperature of perception to realize accurate constant temperature regulation, the leaving water temperature is stable, and the shower is experienced.

In order to achieve the above purpose, the technical scheme of the utility model is that:

a thermostatic valve core comprises a body, a plunger, a water mixing assembly, a temperature sensing element and a driving element; a water mixing cavity is defined in the body, and a hot water inlet, a cold water inlet and a water mixing outlet which are communicated with the water mixing cavity are sequentially arranged from bottom to top; the plunger is arranged in the water mixing cavity and slides along the axial direction of the valve core so as to adjust the through-flow sections of the hot water inlet and the cold water inlet; the water mixing assembly comprises a water mixing barrel and a water mixing sheet which are arranged in the water mixing cavity; the water mixing cylinder is in sealing fit with the body so as to divide the water mixing cavity into a first water mixing area and a second water mixing area, the hot water inlet, the cold water inlet and the plunger are all arranged in the first water mixing area, and the water mixing outlet is arranged in the second water mixing area; a water mixing communicating channel extending along the axial direction of the valve core is arranged in the water mixing barrel, the lower end of the water mixing communicating channel is communicated with a first water mixing area through at least one first water passing hole positioned below the hot water inlet, and the upper end of the water mixing communicating channel is communicated with a second water mixing area through at least one second water passing hole; the water mixing piece is fixedly arranged on one side of the plunger and is provided with a plurality of third water passing ports for shunting cold water to enter and guiding the cold water to the hot water inlet; the temperature sensing element can be arranged in the body in a sliding manner along the axial direction of the valve core in a stopping manner, is provided with a temperature sensing end arranged in the water mixing communication channel, and expands or contracts along the axial direction of the valve core according to the water temperature so as to drive the plunger to slide along the axial direction of the valve core; the driving piece is movably connected with the body and drives the temperature sensing piece to axially slide along the valve core so as to adjust the stop position of the temperature sensing piece.

In one embodiment: the driving piece comprises a rotating rod rotatably connected with the body and a guide rod slidably connected with the body, and the rotating rod is connected with the guide rod through a transmission thread so that the rotating rod drives the guide rod to axially slide along the valve core after rotating; further comprising: a first nut and a first seal ring; the first nut is in threaded connection with the guide rod so as to lock the first sealing ring at the end part of the guide rod; the first sealing ring is used for plugging the mixed water outlet when the guide rod slides downwards to a mixed water closing position.

In one embodiment: and the second sealing ring is arranged between the guide rod and the body and used for establishing a sealing relation between the mixed water outlet and the transmission screw teeth.

In one embodiment: the guide rod is abutted against one end of the temperature sensing piece opposite to the temperature sensing end and drives the temperature sensing piece to slide downwards along the axial direction of the valve core; the valve core further comprises a first spring, and the first spring is used for providing upward resetting force along the axial direction of the valve core for the temperature sensing piece when the guide rod slides towards the direction far away from the temperature sensing piece.

In one embodiment: the water mixing barrel penetrates through the plunger and is in threaded connection with the plunger; the temperature sensing piece is abutted against the positioning step to drive the water mixing barrel and the plunger to slide downwards along the axial direction of the valve core together; the two ends of the first spring are respectively abutted against the body and the water mixing barrel so as to drive the water mixing barrel and the plunger to upwards slide along the axial direction of the valve core when the temperature sensing piece contracts, and drive the temperature sensing piece, the water mixing barrel and the plunger to upwards slide along the axial direction of the valve core when the guide rod slides in the direction far away from the temperature sensing piece.

In one embodiment: the body comprises a valve shell and a second nut, the water mixing cavity is formed in the valve shell, and the second nut is in threaded connection with the valve shell and is positioned in the water mixing cavity; the second nut is sleeved outside the water mixing cylinder and is in sealing fit with the water mixing cylinder so as to divide the water mixing cavity into the first water mixing area positioned below the second nut and the second water mixing area positioned above the second nut; the second nut is also used for guiding the water mixing barrel to slide along the axial direction of the valve core.

In one embodiment: the body comprises a valve housing and a base; the water mixing cavity is formed in the valve shell, and the base is detachably and fixedly connected to the lower end of the valve shell; an assembly opening is formed in the valve shell, and the inner diameter of the assembly opening is larger than the outer diameter of the water mixing barrel, so that the water mixing barrel can penetrate through the assembly opening along the axial direction of the valve core in the forward direction or the reverse direction when the base is detached from the valve shell, and is in sealing fit with the assembly opening or is not in sealing fit with the assembly opening; when the water mixing cylinder is in sealing fit with the assembly opening, the water mixing cavity is divided into the first water mixing area below the assembly opening and the second water mixing area above the assembly opening.

In one embodiment: the lower end of the water mixing cylinder is provided with a plurality of first water passing openings penetrating through the side wall of the water mixing cylinder, and the temperature sensing end of the temperature sensing element is arranged in the water mixing communication channel and corresponds to the first water passing openings.

In one embodiment: the body is provided with a third sealing ring positioned at the hot water inlet, and the plunger is in sealing fit with the third sealing ring when axially sliding to a hot water closing position along the valve core so as to block the hot water inlet.

In one embodiment: the temperature sensing piece is a paraffin wax thermometer bulb.

Compared with the prior art, the utility model discloses case has following beneficial effect:

(1) according to the thermostatic valve core provided by the embodiment of the utility model, the water mixing communicating channel is arranged in the water mixing cylinder, so that the mixing path of hot water and cold water is prolonged; in addition, after the water flow is divided, scattered and guided through the third water passing port of the water mixing piece and the first water passing port of the water mixing cylinder, the water flow is collided and mixed for many times, the mixing degree of cold water and hot water is improved, the hot water and the cold water are fully mixed, and mixed water with high mixing degree is obtained in the water mixing communicating passage; on the basis, the temperature sensing end of the temperature sensing element is arranged in the water mixing communication channel, so that the temperature sensing element can accurately sense the real temperature of cold water and hot water after the cold water and the hot water are fully mixed, more accurate self-balancing adjustment is carried out, and the defect that the outlet water temperature is easy to fluctuate is avoided;

(2) according to the thermostatic valve element provided by the embodiment of the utility model, the end part of the guide rod is provided with the first sealing ring, so that a user can control temperature regulation and water flow on-off by continuously operating the rotating rod, and the operation is convenient; the first sealing ring is locked at the end part of the guide rod through the first nut, so that the first sealing ring can be prevented from being washed away by high-pressure water, and the sealing stability is improved;

(3) according to the thermostatic valve core provided by the embodiment of the utility model, the second sealing ring is arranged between the guide rod and the body, so that the contact between the transmission screw teeth and water can be avoided, the incrustation scale is jammed, the service life of the transmission screw teeth is prolonged, and the operation hand feeling of the valve core is improved;

(4) according to the thermostatic valve core provided by the embodiment of the utility model, the hot water inlet is provided with the third sealing ring, the sealing effect of the hot water end is improved in a soft sealing mode, hot water inlet is effectively closed when cold water is not supplied, and the shower safety of a user is ensured;

(5) in the thermostatic valve element provided by the embodiment of the utility model, the first spring provides upward reset force, so that the linkage relation of the driving piece, the temperature sensing piece, the water mixing cylinder and the plunger is realized without mutual fixed connection, only one-way butt is needed, and the production of parts and the assembly of the valve element are convenient;

(6) the thermostatic valve element provided by the embodiment of the utility model is provided with the second nut in the body, and the second nut is sleeved outside the water mixing cylinder and is in sealing fit with the water mixing cylinder, so that the water mixing cavity is divided into the first water mixing area and the second water mixing area, and cold water inlet is guided to be fully mixed with hot water inlet and then flows out through the water mixing communicating channel; in addition, the second nut also has the function of guiding the water mixing cylinder to slide along the axial direction of the valve core, so that the sliding stability of the water mixing cylinder is ensured;

(7) the thermostatic valve element provided by the embodiment of the utility model has the advantages that the assembly opening is formed in the body, the inner diameter of the assembly opening is larger than the outer diameter of the water mixing cylinder, so that the water mixing cylinder can pass through the assembly opening along the axial direction of the valve element or reversely when the base is disassembled on the valve shell, and after the base is disassembled, the water mixing cylinder, the temperature sensing piece and the plunger can be taken out together, so that the temperature sensing piece can be conveniently disassembled from the valve element to be maintained or replaced;

(8) the utility model discloses thermostatic cartridge, the lower extreme of mixing a water section of thick bamboo are equipped with a plurality of and run through its lateral wall first cross the mouth of a river, the temperature sensing end of temperature sensing piece is in mix water intercommunication and say and correspond first water mouth of crossing sets up to can improve the stability of temperature sensing piece to the reaction rate of the temperature of intaking and leaving water temperature.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is an exploded view of the thermostatic cartridge according to embodiment 1 of the present invention;

fig. 2 is a sectional view of the thermostatic valve core in a closed state according to embodiment 1 of the present invention;

fig. 3 is a sectional view of the thermostatic valve core in the water outlet state according to embodiment 1 of the present invention;

fig. 4 is a three-dimensional structure view of a water mixing barrel of the thermostatic valve element in embodiment 1 of the present invention;

fig. 5 is a three-dimensional structure diagram of a water mixing sheet of the thermostatic valve element according to embodiment 1 of the present invention;

fig. 6 is a three-dimensional structure view of a plunger of the thermostatic valve cartridge according to embodiment 1 of the present invention;

fig. 7 is a sectional view of the thermostatic cartridge according to embodiment 1 of the present invention after the guide rod, the first nut, and the first seal ring are assembled;

fig. 8 is a three-dimensional structure view of a water mixing barrel of the thermostatic valve element in embodiment 2 of the present invention;

fig. 9 is a sectional view of the thermostatic cartridge according to embodiment 2 of the present invention in a water discharge state.

The main reference numbers:

the water mixing valve comprises a body 1, an upper valve shell 11, a lower valve shell 12, a base 13, a hot water inlet 14, a cold water inlet 15, a mixed water outlet 16, a mixed water cavity 17, a second nut 18, an assembling opening 18A, a third sealing ring 19, a first water mixing area 171 and a second water mixing area 172;

the plunger 2, the abdicating hole 21 and the water through hole 22;

the water mixing component 3, the water mixing barrel 31(31A), the water mixing sheet 32, a water mixing communication channel 311, a first water passing port 312, a second water passing port 313, a positioning step 314 and a third water passing port 321;

a temperature sensing element 4 and a temperature sensing end 41;

a driving member 5, a rotating rod 51 and a guide rod 52; a first nut 521, a first seal ring 522, and a second seal ring 523;

a first spring 6.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are preferred embodiments of the invention and should not be considered as excluding other embodiments. Based on the embodiment of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention.

In the claims, the specification and the drawings, unless otherwise expressly limited, the terms "first," "second," or "third," etc. are used for distinguishing between different elements and not for describing a particular sequence.

In the claims, the specification and the drawings, unless otherwise expressly limited, all directional or positional relationships, such as those using the terms "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," "counterclockwise," and the like, are based on the directional or positional relationships illustrated in the drawings and are for the purpose of convenience in describing the invention and simplifying the description, but do not indicate or imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore are not to be construed as limiting the scope of the invention.

In the claims, the description and the drawings of the present application, unless otherwise expressly limited, the term "fixedly connected" or "fixedly connected" is used, which is to be understood broadly, that is, any connection mode without displacement relation or relative rotation relation between the two, that is, including non-detachably fixed connection, integrated connection and fixed connection through other devices or elements.

In the claims, the specification and the drawings, the terms "including", "comprising" and variations thereof, if used, are intended to be inclusive and not limiting.

Example 1

Referring to fig. 1 to 7, embodiment 1 of the present invention provides a thermostatic cartridge, including a body 1, a plunger 2, a water mixing assembly 3, a temperature sensing element 4, and a driving element 5.

A water mixing cavity 17 is defined in the body 1, and a hot water inlet 14, a cold water inlet 15 and a water mixing outlet 16 which are communicated with the water mixing cavity 17 are sequentially arranged from bottom to top. In a specific structure, the body 1 comprises an upper valve casing 11, a lower valve casing 12 and a base 13 which are detachably and fixedly connected with each other, and enclose and define the water mixing cavity 17. The hot water inlet 14 and the cold water inlet 15 are both arranged on the side wall of the lower valve casing 12, and the hot water inlet 14 is positioned below the cold water inlet 15. The top of the lower valve casing 12 is also provided with the mixed water outlet 16, and cold and hot inlet water is mixed in the mixed water cavity 17 and then flows out of the lower valve casing 12 through the mixed water outlet 16. The lower pot head of going up valve casing 11 is located outside lower valve casing 12, and its lateral wall is equipped with the water guide mouth that corresponds, and the mixed water is by the top of lower valve casing 12 back of flowing, the warp water guide mouth outflow case.

The plunger 2 is axially and slidably arranged in the water mixing cavity 17 along the valve core so as to adjust the water passing cross sections of the hot water inlet 14 and the cold water inlet 15. In a specific structure, the plunger 2 is configured as a rotator with two open ends, and the two open ends are respectively arranged corresponding to the hot water inlet 14 and the cold water inlet 15, so that the water inflow of the hot water inlet 14 and the cold water inlet 15 can be changed by driving the plunger to axially slide along the valve core, and the water temperature can be adjusted. A abdicating hole 21 and a plurality of water through holes 22 are arranged in the plunger 2 in a penetrating way, and the water through holes 22 allow cold water and hot water to enter the water mixing cavity 17 from the two ends of the plunger 2 and then to be mixed with each other. The peripheral wall of the plunger 2 sealingly engages the lower valve housing 12 to prevent the mixing of the hot and cold water prior to entry into the mixing chamber 17.

The water mixing assembly 3 comprises a water mixing cylinder 31 and a water mixing sheet 32 which are arranged in the water mixing cavity 17.

The water mixing barrel 31 is in sealing fit with the body 1 to divide the water mixing chamber 17 into a first water mixing area 171 and a second water mixing area 172, the hot water inlet 14, the cold water inlet 15 and the plunger 2 are all arranged in the first water mixing area 171, and the water mixing outlet 16 is arranged in the second water mixing area 172. A water mixing communicating channel 311 extending along the axial direction of the valve core is arranged in the water mixing barrel 31, the lower end of the water mixing communicating channel is communicated with the first water mixing area 171 through a plurality of first water passing holes 312 positioned below the hot water inlet 14, and the upper end of the water mixing communicating channel is communicated with the second water mixing area 172 through a plurality of second water passing holes 313. In a specific structure, the water mixing cylinder 31 passes through the abdicating hole 21 of the plunger 2 and is in threaded connection with the same, so as to be arranged in the water mixing cavity 17 in a sliding way together with the same. The body 1 further includes a second nut 18 screwed to the lower valve casing 12 and located in the water mixing chamber 17, and one end of the water mixing cylinder 31 passes through the second nut 18 to enable the second nut 18 to be sleeved outside and to be in sealing fit with the second nut 18, so as to divide the water mixing chamber 17 into a first water mixing area 171 located below the second nut 18 and a second water mixing area 172 located above the second nut 18, so as to guide the cold water intake to be fully mixed with the hot water intake and then flow out through the water mixing communication channel 311. The second nut 18 is also used for guiding the water mixing barrel 31 to slide along the axial direction of the valve core. The lower end of the water mixing barrel 31 is provided with a plurality of first water passing holes 312 penetrating through the side wall thereof, and the upper end thereof is provided with a positioning step 314 and a plurality of second water passing holes 313.

The water mixing piece 32 is fixedly arranged on one side of the plunger 2 and is provided with a plurality of third water passing ports 321, and the third water passing ports 321 are used for dividing and scattering cold water inlet water and guiding the cold water inlet water to the hot water inlet 14 so as to mix the cold water inlet water and the hot water inlet water.

Thus, the flow direction of the water flow in the water mixing chamber 17 of the present invention is substantially: after entering the first water mixing area 171 from the cold water inlet 15, the cold water enters the hot water inlet 14 through the plurality of water through holes 22 on the plunger 2 and the plurality of third water passing holes 321 of the water mixing fin 32, and is mixed to a certain extent, the mixed water flows downward, is guided by the first water passing holes 312 at the lower end of the water mixing cylinder 31, returns back to enter the water mixing communicating channel 311, flows upward through the water mixing communicating channel 311, enters the second water mixing area 172 through the second water passing holes 313 at the upper end of the water mixing cylinder 31, and finally flows out from the water mixing outlet 16. In the process, the mixing path of the hot water and the cold water is prolonged, the hot water and the cold water are fully mixed, and after the flow is divided, scattered and guided by the third water passing port 321 and the first water passing port 312, mixed water with a high mixing degree can be obtained in the mixed water communicating passage 311.

On the basis, the temperature sensing element 4 can be arranged in the body 1 in a sliding manner along the axial direction of the valve core in a stopping manner, has a temperature sensing end 41 arranged in the water mixing communication channel 311, and expands or contracts along the axial direction of the valve core according to the water temperature so as to drive the plunger 2 to slide along the axial direction of the valve core. In this embodiment, the temperature sensing element 4 is configured as a paraffin wax bulb. When the temperature sensing element 4 is heated to expand in actual work, the temperature sensing element 4 drives the plunger 2 to slide downwards, the through-flow section of the hot water inlet 14 is reduced, and the through-flow section of cold water inlet is increased, so that the water temperature is reduced; on the contrary, when the temperature sensing element 4 is cooled and contracted, the plunger 2 slides upwards, the through-flow section of the cold water inlet 15 is reduced, and the through-flow section of hot water inlet is increased, so that the water temperature is increased, the thermostatic valve core can realize self-balancing regulation, and constant-temperature water outlet is realized.

In a specific structure, the temperature sensing element 4 is partially arranged in the water mixing cylinder 31 and abuts against the positioning step 314 so as to drive the water mixing cylinder 31 and the plunger 2 to slide downwards along the axial direction of the valve core together when the temperature sensing element is heated and expanded. The temperature sensing end 41 of the temperature sensing element 4 is arranged in the water mixing communication passage 311 corresponding to the first water passing opening 312, so that the reaction speed of the temperature sensing element 4 to the temperature of the inlet water and the stability of the temperature of the outlet water can be improved. The valve core further comprises a first spring 6, and two ends of the first spring abut against the base 13 and the water mixing barrel 31 respectively, so that when the temperature sensing element 4 contracts, the first spring 6 can drive the water mixing barrel 31 and the plunger 2 to slide upwards along the axial direction of the valve core.

The driving member 5 is movably connected with the body 1 and drives the temperature sensing element 4 to slide along the axial direction of the valve core so as to adjust the stop position of the temperature sensing element 4. In a specific structure, the driving element 5 includes a rotating rod 51 rotatably connected to the body 1 and a guide rod 52 slidably connected to the body 1, and the rotating rod 51 is connected to the guide rod 52 through a transmission thread, so that the rotating rod 51 rotates to drive the guide rod 52 to slide along the axial direction of the valve core. The guide rod 52 abuts against one end of the temperature sensing element 4 opposite to the temperature sensing end 41 to drive the temperature sensing element to slide downwards along the axial direction of the valve core. The first spring 6 is also used for providing a restoring force upwards along the axial direction of the valve core to the temperature sensing element 4 when the guide rod 52 slides towards the direction far away from the temperature sensing element 4, and driving the whole body formed by the temperature sensing element 4, the water mixing barrel 31 and the plunger 2 to slide upwards along the axial direction of the valve core. Therefore, the upward reset force is provided through the first spring 6, so that the linkage relation of the driving piece 5, the temperature sensing piece 4, the water mixing cylinder 31 and the plunger 2 is realized without mutual fixed connection, only one-way abutting is needed, and the production of parts and the assembly of the valve core are facilitated.

Preferably, the valve cartridge further comprises: a first nut 521, a first seal 522, a second seal 523, and a third seal 19.

The first nut 521 is threadedly coupled to the guide rod 52 to lock the first packing 522 to the end of the guide rod 52. The first sealing ring 522 is used for blocking the mixed water outlet 16 when the guide rod 52 slides downwards to a mixed water closing position. Through being equipped with first sealing washer 522 at the tip of guide bar 52, the user accessible continues to operate rotary rod 51 and controls temperature regulation and water flow break-make, convenient operation. The first sealing ring 522 is locked at the end part of the guide rod 52 through the first nut 521, so that the first sealing ring 522 can be prevented from being washed away by high-pressure outlet water, and the sealing stability is improved.

The second sealing ring 523 is disposed between the guide rod 52 and the body 1, and is used for establishing a sealing relationship between the mixed water outlet 16 and the transmission thread. Through set up second sealing washer 523 between guide bar 52 and body 1, can avoid transmission thread to contact with water, lead to incrustation scale bite, improve the life of transmission thread, improve the operation of case and feel.

The third sealing ring 19 is arranged on the body 1 at a position corresponding to the hot water inlet 14, and the plunger 2 is in sealing fit with the third sealing ring 19 when axially sliding along the valve core to a hot water closing position so as to block the hot water inlet 14. The hot water inlet 14 is provided with a third sealing ring 19, and the sealing effect of the hot water end is improved in a soft sealing mode. When cold water is lost, hot water inlet is effectively closed, and the shower safety of a user is ensured.

The working principle of the thermostatic valve core of the embodiment is as follows: when the valve core is in the closed state, the user rotates the rotating rod 51 in the first direction, the guide rod 52 and the first sealing ring 522 are far away from the mixed water outlet 16, and the mixed water outlet 16 is opened. As the user continues to rotate, the flow rate of the outlet water also increases, the temperature sensing element 4 also slides upwards, the through-flow section of the hot water inlet 14 is increased, and the corresponding temperature of the outlet water also continuously increases. On the contrary, when the valve core is in the water outlet state, the user rotates the rotating rod 51 along the second direction, the guide rod 52 and the first sealing ring 522 are gradually close to the mixed water outlet 16, the water outlet flow is gradually reduced along with the continuous rotation of the user in the process, the temperature sensing element 4 also slides downwards, the through-flow section of the hot water inlet 14 is reduced, and the corresponding water outlet temperature is continuously reduced until the mixed water outlet 16 is completely blocked by the first sealing ring 522. When the user stops rotating to stop the temperature sensing element 4 at a certain position and the water inlet fluctuates, the temperature sensing element 4 drives the plunger 2 to perform the self-balancing adjustment, which is not described herein again.

Therefore, in the thermostatic valve core according to the embodiment of the present invention, the mixing connecting channel 311 is disposed in the mixing cylinder 31, so as to prolong the mixing path of the hot water and the cold water; in addition, after the water flow is divided, scattered and guided through the third water passing port 321 of the water mixing sheet 32 and the first water passing port 312 of the water mixing cylinder 31, the water flow collides and mixes for many times, so that the mixing degree of cold water and hot water is improved, the hot water and the cold water are fully mixed, and mixed water with high mixing degree is obtained in the water mixing communicating channel 311; on the basis, the temperature sensing end 41 of the temperature sensing element 4 is arranged in the water mixing communication channel 311, so that the temperature sensing element can accurately sense the real temperature of the fully mixed cold water and hot water, accurate self-balancing adjustment is performed, and the defect that the outlet water temperature is easy to fluctuate is avoided.

Example 2

Referring to fig. 8-9, the embodiment 2 of the present invention further provides a thermostatic valve cartridge, which is different from the embodiment 1 only in that a water mixing cylinder 31A with a more compact structure is provided, and a fitting opening 18A is formed in the body 1, and the inner diameter of the fitting opening is larger than the outer diameter of the water mixing cylinder 31A, so that the water mixing cylinder 31A can pass through the fitting opening 18A along the axial direction of the valve cartridge or in the reverse direction when the base 13 is detached from the valve housing, and is respectively in sealing fit with the valve cartridge or is out of sealing fit with the valve cartridge. Likewise, when the mixing cylinder 31A is in sealing engagement with the mounting opening, the mixing chamber 17 is divided into the first water mixing region 171 below the mounting opening 18A and the second water mixing region 172 above the mounting opening 18A.

The advantages of example 2 are: the mixing cylinder 31A, the temperature sensing element 4 and the plunger 2 can be taken out together only by removing the base 13, so that the temperature sensing element 4 can be conveniently removed from the valve core for maintenance or replacement. Meanwhile, the lower end and the upper end of the water mixing cylinder 31A also have the first water passing port 312 and the second water passing port 313, and the same waterway structure as that of embodiment 1 can be realized, thereby having the advantages of embodiment 1.

The description of the above specification and examples is intended to illustrate the scope of the invention, but should not be construed as limiting the scope of the invention. Modifications, equivalents and other improvements which may be made to the embodiments of the invention or to some of the technical features thereof by a person of ordinary skill in the art through logical analysis, reasoning or limited experimentation in light of the above teachings of the invention or the above embodiments are intended to be included within the scope of the invention.

Claims (10)

1. A thermostatic cartridge, its characterized in that: comprises a body, a plunger, a water mixing component, a temperature sensing piece and a driving piece;

a water mixing cavity is defined in the body, and a hot water inlet, a cold water inlet and a water mixing outlet which are communicated with the water mixing cavity are sequentially arranged from bottom to top; the plunger is arranged in the water mixing cavity and slides along the axial direction of the valve core so as to adjust the through-flow sections of the hot water inlet and the cold water inlet;

the water mixing assembly comprises a water mixing barrel and a water mixing sheet which are arranged in the water mixing cavity; the water mixing cylinder is in sealing fit with the body so as to divide the water mixing cavity into a first water mixing area and a second water mixing area, the hot water inlet, the cold water inlet and the plunger are all arranged in the first water mixing area, and the water mixing outlet is arranged in the second water mixing area; a water mixing communicating channel extending along the axial direction of the valve core is arranged in the water mixing barrel, the lower end of the water mixing communicating channel is communicated with a first water mixing area through at least one first water passing hole positioned below the hot water inlet, and the upper end of the water mixing communicating channel is communicated with a second water mixing area through at least one second water passing hole; the water mixing piece is fixedly arranged on one side of the plunger and is provided with a plurality of third water passing ports for shunting cold water to enter and guiding the cold water to the hot water inlet;

the temperature sensing element can be arranged in the body in a sliding manner along the axial direction of the valve core in a stopping manner, is provided with a temperature sensing end arranged in the water mixing communication channel, and expands or contracts along the axial direction of the valve core according to the water temperature so as to drive the plunger to slide along the axial direction of the valve core; the driving piece is movably connected with the body and drives the temperature sensing piece to axially slide along the valve core so as to adjust the stop position of the temperature sensing piece.

2. The thermostatic cartridge of claim 1, wherein: the driving piece comprises a rotating rod rotatably connected with the body and a guide rod slidably connected with the body, and the rotating rod is connected with the guide rod through a transmission thread so that the rotating rod drives the guide rod to axially slide along the valve core after rotating;

further comprising: a first nut and a first seal ring; the first nut is in threaded connection with the guide rod so as to lock the first sealing ring at the end part of the guide rod; the first sealing ring is used for plugging the mixed water outlet when the guide rod slides downwards to a mixed water closing position.

3. The thermostatic cartridge of claim 2, further comprising: and the second sealing ring is arranged between the guide rod and the body and used for establishing a sealing relation between the mixed water outlet and the transmission screw teeth.

4. The thermostatic cartridge of claim 2, wherein: the guide rod is abutted against one end of the temperature sensing piece opposite to the temperature sensing end and drives the temperature sensing piece to slide downwards along the axial direction of the valve core;

the valve core further comprises a first spring, and the first spring is used for providing upward resetting force along the axial direction of the valve core for the temperature sensing piece when the guide rod slides towards the direction far away from the temperature sensing piece.

5. The thermostatic cartridge of claim 4, wherein: the water mixing barrel penetrates through the plunger and is in threaded connection with the plunger;

the temperature sensing piece is abutted against the positioning step to drive the water mixing barrel and the plunger to slide downwards along the axial direction of the valve core together;

the two ends of the first spring are respectively abutted against the body and the water mixing barrel so as to drive the water mixing barrel and the plunger to upwards slide along the axial direction of the valve core when the temperature sensing piece contracts, and drive the temperature sensing piece, the water mixing barrel and the plunger to upwards slide along the axial direction of the valve core when the guide rod slides in the direction far away from the temperature sensing piece.

6. The thermostatic cartridge of claim 5, wherein: the body comprises a valve shell and a second nut, the water mixing cavity is formed in the valve shell, and the second nut is in threaded connection with the valve shell and is positioned in the water mixing cavity;

the second nut is sleeved outside the water mixing cylinder and is in sealing fit with the water mixing cylinder so as to divide the water mixing cavity into the first water mixing area positioned below the second nut and the second water mixing area positioned above the second nut;

the second nut is also used for guiding the water mixing barrel to slide along the axial direction of the valve core.

7. The thermostatic cartridge of claim 5, wherein: the body comprises a valve housing and a base; the water mixing cavity is formed in the valve shell, and the base is detachably and fixedly connected to the lower end of the valve shell;

an assembly opening is formed in the valve shell, and the inner diameter of the assembly opening is larger than the outer diameter of the water mixing barrel, so that the water mixing barrel can penetrate through the assembly opening along the axial direction of the valve core in the forward direction or the reverse direction when the base is detached from the valve shell, and is in sealing fit with the assembly opening or is not in sealing fit with the assembly opening;

when the water mixing cylinder is in sealing fit with the assembly opening, the water mixing cavity is divided into the first water mixing area below the assembly opening and the second water mixing area above the assembly opening.

8. The thermostatic cartridge of claim 1, wherein: the lower end of the water mixing cylinder is provided with a plurality of first water passing openings penetrating through the side wall of the water mixing cylinder, and the temperature sensing end of the temperature sensing element is arranged in the water mixing communication channel and corresponds to the first water passing openings.

9. The thermostatic cartridge of claim 1, wherein: the body is provided with a third sealing ring positioned at the hot water inlet, and the plunger is in sealing fit with the third sealing ring when axially sliding to a hot water closing position along the valve core so as to block the hot water inlet.

10. The thermostatic cartridge of claim 1, wherein: the temperature sensing piece is a paraffin wax thermometer bulb.

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