CN115727155A - Thermostatic valve core and shower - Google Patents

Abstract

The invention discloses a thermostatic valve core and a shower, wherein the thermostatic valve core comprises: the valve body is provided with a water mixing cavity, a cold water inlet channel, a hot water inlet channel and a water outlet channel; a second branch in the cold water inlet path is provided with a first water passing port which is directly communicated with the water mixing cavity; the constant temperature component is suitable for adjusting the flow of cold water and hot water to the water mixing cavity according to the change of the water temperature in the water mixing cavity; the temperature sensing part expands when the water temperature in the cold water inlet channel rises to push the adjusting part to slide to open the first water passing port and contracts when the water temperature drops, and the elastic part is suitable for being contracted under the action of the adjusting part when the temperature sensing part expands to store elastic potential energy and release the stored elastic potential energy when the temperature sensing part contracts to push the adjusting part to slide to close the first water passing port; the thermostatic valve core can enable the gas water heater to be normally used in any season.

Description

Thermostatic valve core and shower

Technical Field

The invention relates to the technical field of thermostatic valve cores, in particular to a thermostatic valve core and a shower.

Background

At present, in order to keep the temperature of the outlet water constant, a thermostatic cartridge is generally arranged on a shower, and a temperature sensing assembly is arranged in the thermostatic cartridge, and the temperature sensing assembly can adjust the flow rates of the inlet cold water and the inlet hot water, so that the mixed outlet water is always kept in a proper range.

In winter, the cold water inlet temperature of the gas water heater is lower, the hot water output by the gas water heater can be in a proper range, the hot water flow entering the thermostatic valve core can also be in a proper range, the cold water inlet flow of the gas water heater cannot be influenced, and the water outlet temperature of the thermostatic valve core cannot be influenced; however, in summer, the cold water inlet temperature of the gas water heater is higher, so the temperature of hot water entering the thermostatic valve core after heating is also higher, at the moment, the thermostatic valve core can reduce the flow of hot water inlet, the reduction of the hot water inlet flow of the thermostatic valve core can lead to the reduction of the cold water inlet flow of the gas water heater, the gas water heater can only start to work when the cold water inlet flow or the water pressure is higher than a certain threshold value, if the cold water inlet flow is too low, the gas water heater can not work or extinguish, normal use can not be continued, or the maximum limit temperature of gas is triggered due to the fact that the hot water temperature output by the gas water heater is too high, and the gas water heater can not be normally used.

Disclosure of Invention

The present invention aims to overcome the above-mentioned drawbacks and problems of the prior art and to provide a thermostatic cartridge and a shower which allow the gas water heater to be used normally in any season.

In order to achieve the purpose, the invention adopts the following technical scheme:

a thermostatic cartridge comprising: the valve body is provided with a water mixing cavity, and a cold water inlet channel, a hot water inlet channel and a water outlet channel which are communicated with the water mixing cavity; the cold water inlet path comprises a first branch and a second branch, and the second branch is provided with a first water passing port directly communicated with the water mixing cavity; the thermostatic assembly is arranged in the valve body and is suitable for adjusting the water passing flow of the cold water inlet channel and the hot water inlet channel which are respectively communicated to the water mixing cavity according to the water temperature change in the water mixing cavity; the water inlet control assembly is arranged in the valve body and comprises a temperature sensing part, an elastic part and an adjusting part; the adjusting part is suitable for sliding in a reciprocating mode relative to the valve body along the water inlet direction of the first water passing port and is provided with a blocking surface facing the first water passing port, and the blocking surface is suitable for blocking the first water passing port so as to cut off the water path communication from the water inlet end of the second branch to the water mixing cavity; the temperature sensing part is suitable for expanding when the temperature of the cold water in the cold water inlet channel rises to push the adjusting part to be far away from the first water passing port, and the temperature sensing part contracts when the temperature of the water drops; the elastic part is suitable for being contracted under the action of the adjusting part when the temperature sensing part expands so as to store elastic potential energy, and releases the stored elastic potential energy when the temperature sensing part contracts so as to push the adjusting part to be close to the first water passing opening.

Furthermore, the valve body is provided with a first water inlet, a second water passing port and a water inlet hole; the first water inlet is communicated to the first water passing port to form the second branch, the communication state is switched by the water inlet control assembly, and the first water inlet and the second water passing port are always communicated; the second water passing opening is communicated with the water inlet hole, the water inlet hole is communicated with the water mixing cavity, and the water inlet hole forms the first branch.

Furthermore, the water passing area of the second branch is reduced after the first water passing port along the water passing direction.

Further, the first water inlet is formed in the bottom of the valve body; the second water passing opening and the water inlet hole are formed in the side portion of the valve body, and the water inlet hole is located above the second water passing opening.

Furthermore, the water inlet control assembly comprises a temperature sensing spring, a return spring, a sliding rod, a clamping sheet and a plugging block; the temperature sensing spring forms the temperature sensing part, the return spring forms the elastic part, and the sliding rod is fixedly connected with the clamping sheet and the plugging block to form the adjusting part; the sliding rod is arranged on the valve body in a sliding mode along the water passing direction of the first water passing port, one end, close to the first water passing port, of the sliding rod is fixedly connected with the blocking block, and the other end, far away from the first water passing port, of the sliding rod is fixedly clamped with the clamping sheet so as to form a flange protruding out of the side wall of the sliding rod through the clamping sheet; one end of the temperature sensing spring is abutted against the valve body, and the other end of the temperature sensing spring is abutted against the flange; one end of the return spring is abutted against the valve body, and the other end of the return spring is abutted against one side, away from the first water passing port, of the blocking block; the surface of one side of the blocking block facing the first water passing port forms the blocking surface.

Furthermore, a clamping groove is concavely arranged at one end of the sliding rod, which is far away from the first water passing opening; the clamping sheet is suitable for being sleeved outside the sliding rod and inserted into the clamping groove to be clamped and matched with the sliding rod.

Further, the constant temperature component comprises a pushing spring, a temperature sensing bulb and a piston which are fixedly connected with each other; the piston is matched with the valve body to form a cold water passing gap and a hot water passing gap which are arranged in the axial direction of the valve body, the cold water passing gap is suitable for being communicated with the second water passing port, and the hot water passing gap is suitable for being communicated with the water outlet end of the hot water inlet channel; the temperature sensing bulb is suitable for expanding or contracting according to the change of the water temperature in the water mixing cavity and drives the piston to axially move along the valve body by abutting against the valve body so as to adjust the water passing areas of the cold water passing gap and the hot water passing gap; the pushing spring is arranged between the temperature sensing bulb and the valve body so as to apply force to the temperature sensing bulb to push the piston to move towards the direction of increasing the water passing area of the hot water passing gap.

Further, the constant temperature assembly further comprises a valve rod, an adjusting bolt, a safety spring and a top cap; the valve rod is in threaded connection with the adjusting bolt and is exposed out of the valve body for operation; the adjusting bolt is in limit fit with the valve body in the circumferential direction of the valve body and is suitable for being driven by the valve rod to move along the axial direction of the valve body; the safety spring is arranged between the adjusting bolt and the top cap, and the temperature sensing bulb is abutted to the top cap and abutted to the valve body.

Further, the valve body comprises a valve seat, an upper cover and an adjusting base; the valve seat is fixedly connected with the upper cover to form an installation chamber of the constant temperature component; the valve seat is provided with the first water inlet, the first water passing port, the second water passing port and a water inlet hole, and the adjusting base is fixedly arranged on the valve seat and positioned between the first water inlet and the first water passing port; the adjusting part penetrates through the adjusting base to form sliding fit with the valve body, and the temperature sensing part and the elastic part are respectively abutted against the adjusting base to apply force for driving the adjusting part to slide relative to the valve body.

In addition, the invention also provides a shower, which comprises a shower body and the thermostatic valve core as described in any one of the above items; the shower body is suitable for being connected with cold water inlet and hot water inlet and outputting mixed water after being input to the thermostatic valve core; the cold water inlet channel of the thermostatic valve core is communicated with the cold water inlet channel of the shower body, the hot water inlet channel of the thermostatic valve core is communicated with the hot water inlet channel of the shower body, and the water outlet channel of the thermostatic valve core is communicated with the mixed water output channel of the shower body.

As can be seen from the above description of the present invention, the present invention has the following advantages over the prior art:

1. cold water enters the water mixing cavity through the cold water inlet passage, hot water enters the water mixing cavity through the hot water inlet passage, the cold water and the hot water are mixed into warm water in the water mixing cavity and then are output from the water outlet passage, and the constant temperature component plays a role in ensuring that the temperature of the warm water output by the water outlet passage is kept in a proper range; the cold water inlet path comprises a first branch and a second branch, the first branch and the second branch can be connected with cold water, a first water passing port is arranged in the second branch, a water inlet control assembly is arranged in the valve body, a temperature sensing portion in the water inlet control assembly can drive an adjusting portion to move and open the first water passing port when the water temperature rises, at the moment, the cold water can directly enter the water mixing cavity from the first water passing port, the cold water does not need to enter the water mixing cavity through the first branch, the cold water can directly cool water in the water mixing cavity, the flow of hot water can be correspondingly increased, and therefore the situation that the gas water heater cannot be used due to overhigh temperature of the cold water is effectively avoided; the thermostatic valve core can automatically control whether the flow rate is supplemented for cold water inlet or not according to the temperature of cold water by integrating the water inlet control assembly in the valve body, a user does not need to manually switch, and the flow rate can be adjusted according to the temperature of the cold water, so that the thermostatic valve core can better play a role in matching the water inlet flow rate with the water outlet temperature when the water temperature changes, therefore, the user can obtain more consistent use experience under the conditions of higher temperature of the cold water in summer and lower temperature of the cold water in winter, and the use satisfaction and comfort of the user are effectively improved; moreover, the thermostatic assembly can effectively improve the safety of the thermostatic valve core, and can rapidly adjust the water inflow of cold water and hot water when the temperature of mixed water is suddenly increased or suddenly reduced, so that a user is prevented from being scalded or stimulated by the cold water.

2. The cold water only enters the valve body from the first water inlet, so that the valve body only needs one path of cold water to enter water, when the temperature of the cold water is low, the cold water enters the water mixing cavity from the first water inlet to the second water passing hole through the water inlet hole, and when the temperature of the water is high, the cold water can reach the water inlet hole from the second water passing hole and can also reach the water mixing cavity through the first water passing hole directly, so that the flow of the cold water is larger, and the effect of reducing the temperature of the water in the water mixing cavity is better.

3. The water passing area of the second branch is reduced after the first water passing opening, so that the flow speed of water flow ejected from the second branch can be accelerated, and the cold water flow is further improved.

4. The first water inlet is arranged at the bottom of the valve body, the second water passing port and the water inlet hole are arranged at the bottom of the valve body, cold water is conveniently divided into two water paths which are not mutually interfered, when the first water passing port is closed, water flow enters the water mixing cavity from the first water inlet, the second water passing port and the water inlet hole, when the first water passing port is opened, the water flow not only enters the water mixing cavity from the water inlet hole, but also can directly enter the water mixing cavity from the first water passing port, and therefore the water flow entering the water mixing cavity is larger.

5. In the water inlet control assembly, the temperature sensing spring can change the elongation amount according to the temperature of water flow in the cold water inlet channel, when the water temperature rises, the temperature sensing spring is elongated to push the adjusting part to open the first water passing port, and simultaneously the return spring is contracted, when the water temperature falls, the temperature sensing spring is contracted, the return spring applies force to the adjusting part, and the adjusting part is enabled to block the first water passing port; in addition, the temperature sensing spring can embolia the slide bar earlier and then fix the joint piece to the slide bar on form the flange that the restriction temperature sensing spring is deviate from, can make things convenient for the installation of temperature sensing spring, and the shutoff piece can be fixed at the slide bar tip to carry out the shutoff to first water mouth of crossing.

6. Set up the joint groove on the slide bar, the joint piece cooperates with joint groove joint again after emboliaing the slide bar to make the joint piece can fix on the slide bar and can not drop, only need insert the joint piece with the slide bar during installation, again from the side direction with the joint piece insert to the joint groove can, reach rapid Assembly's purpose.

7. Among the constant temperature component, the temperature sensing package can promote the piston and move down when mixing water cavity temperature rising to reduce the inflow of hot water, when mixing water cavity temperature decline, promote the spring and can promote the piston and move up, thereby increase hydrothermal inflow.

8. The valve rod can supply the outlet water temperature of user operation in order to adjust thermostatic cartridge, and adjusting bolt can reciprocate when the valve rod rotates, and adjusting bolt is used for promoting safety spring and hood shift position, and the hood can promote the temperature sensing package shift position, and the temperature sensing package can promote piston shift position to the undersize area in adjustment hot water clearance of intaking and cold water clearance of intaking, the safety spring can avoid the temperature sensing package to appear both ends atress too big when receiving temperature influence deformation and lead to the damage.

9. In the valve body, the valve seat and the upper cover are matched to form an installation cavity for installing the constant temperature assembly, the adjusting base is arranged in the second branch, the adjusting part can penetrate through the adjusting base to realize sliding fit with the valve body, and meanwhile, the temperature sensing part and the elastic part can also abut against the adjusting base, so that two ends of the temperature sensing part and two ends of the elastic part respectively act on the valve body and the adjusting part.

10. Still provide a shower, this shower can be used to gas heater, and its built-in thermostatic valve core is through the integrated control assembly that intakes in the valve body for the thermostatic valve core can be according to cold water temperature ground control whether for cold water into supply flow, and the user need not manual switching, and still can make this thermostatic valve core can play the effect that makes the inflow flow and play water temperature match better when the temperature changes according to cold water temperature adjustment flow.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed 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 based on these drawings without creative efforts.

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

FIG. 2 is a cross-sectional structural view 1 of the thermostatic cartridge of FIG. 1;

FIG. 3 is a cross-sectional structural view 2 of the thermostatic cartridge of FIG. 1;

FIG. 4 is an enlarged view of the structure of portion A in FIG. 2;

FIG. 5 is a schematic view of the assembly of the inlet control assembly and the adjustment base of FIG. 1.

Description of the main reference numerals:

a valve seat 11; an upper cover 12; an adjustment base 13; an abutting portion 131; a slide through hole 132; a first filter 14; a second filter 15; a filter base 16; a bulb 21; a piston 22; a push spring 23; a top cap 24; a relief spring 25; an adjusting bolt 26; a valve stem 27; a plugging block 31; a slide bar 32; a return spring 33; a temperature-sensitive spring 34; a first engagement piece 35; a second tab 36; a first circlip 41; the wear-resistant sheet 42; a first seal ring 43; a second seal ring 44; a second clamp spring 45; a third seal ring 46; a fourth seal ring 47; a fifth seal ring 48; a water inlet 51; a first water passing port 52; the second water passing port 53; a first water inlet 54; a water outlet 55; a hot water inlet 56; a hot water intake path 57; cold water intake gap 61; hot water intake gap 62; an inlet chamber 63; a water mixing chamber 64.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the described embodiments are presently preferred embodiments of the invention and are not to be taken as an exclusion of other embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

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

In the claims, the specification and the drawings of the present invention, unless otherwise expressly limited, all directional or positional relationships indicated by 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 indicated in the drawings and are used for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element so indicated must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present invention.

In the claims, the description and the drawings of the present application, unless otherwise expressly limited, the terms "fixedly connected" or "fixedly connected" should be interpreted broadly, that is, any connection between the two that does not have a relative rotational or translational relationship, that is, non-detachably fixed, integrally connected, and fixedly connected by other devices or elements.

In the claims, the specification and the drawings of the present invention, the terms "including", "having" and their variants, if used, are intended to be inclusive and not limiting.

Referring to fig. 1 to 5, fig. 1 shows an exploded view of a structure of an embodiment of a thermostatic valve cartridge provided by the invention, the thermostatic valve cartridge mainly comprises a valve body, a thermostatic assembly and a water inlet control assembly, and the thermostatic valve cartridge is particularly suitable for adjusting the temperature of outlet water of a gas water heater.

When the gas water heater is used, hot water is output by heating cold water in real time, and due to the characteristics of the gas water heater, certain requirements are made on the water inlet flow of the cold water, the water inlet flow of the cold water is limited by the output flow of the hot water, and when the output flow of the hot water is low, the water inlet flow of the cold water is also low, so that the problem that the gas water heater cannot be normally used possibly exists. And the output flow of the hot water is limited by the outlet water temperature of the thermostatic valve core and the flow and temperature of the cold water entering the thermostatic valve core, when the outlet water temperature of the thermostatic valve core is relatively kept constant, if the temperature of the cold water entering the thermostatic valve core is increased, the flow of the hot water entering the thermostatic valve core is reduced under the action of a thermostatic component inside the thermostatic valve core, and the problem that the gas water heater cannot be normally used can occur at the moment. Therefore, in summer, the temperature of the cold water inlet of the thermostatic valve core is increased, the flow of the cold water inlet needs to be increased, more cold water can keep the flow of the hot water entering the thermostatic valve core within a proper range in the same time, and the normal work of the gas water heater is guaranteed.

In this embodiment, when the thermostatic valve core is applied to a scene of a gas water heater, the cold water inlet flow can be properly adjusted according to the cold water inlet temperature, so that the stability of the hot water outlet flow of the gas water heater is ensured.

The valve body of the thermostatic valve core is provided with a water mixing cavity 64, and a cold water inlet channel, a hot water inlet channel 57 and a water outlet channel which are communicated with the water mixing cavity 64, wherein the cold water inlet channel comprises a first branch and a second branch, and the second branch is provided with a first water passing port 52 which is directly communicated with the water mixing cavity 64.

Specifically, referring to fig. 2, the valve body is provided with a first water inlet 54, a second water passing port 53 and a water inlet hole 51; the first water inlet 54 is communicated to the first water passing opening 52 to form a second branch, and is suitable for switching the communication state through the water inlet control assembly, the first water inlet 54 is always communicated with the second water passing opening 53, the second water passing opening 53 is communicated with the water inlet hole 51, the water inlet hole 51 is communicated with the water mixing cavity 64, and the water inlet hole 51 forms the first branch. The first water inlet 54 is arranged at the bottom of the valve body, the second water passing opening 53 and the water inlet 51 are arranged at the side of the valve body, and the water inlet 51 is positioned above the second water passing opening 53.

The valve body mainly comprises a valve seat 11, an upper cover 12, an adjusting base 13, a plurality of clamp springs and a plurality of sealing rings. The valve seat 11 is fixedly connected with the upper cover 12 to form an installation chamber for installing the thermostatic assembly, the valve seat 11 is provided with the first water inlet 54, the first water passing opening 52, the second water passing opening 53 and the water inlet hole 51, and the adjusting base 13 is fixedly arranged on the valve seat 11 and is positioned between the first water inlet 54 and the first water passing opening 52.

Specifically, referring to fig. 2 to 5, the valve body is substantially a solid of revolution, so that it has an axial direction, which is the first direction in this embodiment, and the thermostatic valve element is taken as a reference, the valve body has a top, a bottom and a side, the valve seat 11 is located at the bottom of the thermostatic valve element, the upper cover 12 is located on the valve seat 11 and is fixedly connected into a whole in a screw-threaded matching manner, an installation chamber is formed between the valve seat 11 and the upper cover 12, this installation chamber can be used as an installation space of the thermostatic assembly, and at the same time, the installation chamber can be divided into a water inlet chamber 63 and a water mixing chamber 64, the water inlet chamber 63 is used for receiving cold water inlet, and the water mixing chamber 64 is used for mixing and outputting cold water inlet and hot water inlet to the water outlet path of the valve body.

A first water inlet 54, a water outlet 55 and a hot water inlet 56 are arranged at the bottom of the valve seat 11, a second water passing opening 53 and a water inlet hole 51 are arranged at the side part of the valve seat 11, a first water passing opening 52 is arranged in the valve seat 11, and the first water passing opening 52 is directly communicated to a water mixing cavity 64; the water inlet 51 extends perpendicularly to the axial direction to form a first branch, and the second water passing opening 53 is directly communicated to the water inlet 51 through an external water channel, for example, when the thermostatic valve core is installed in a shower, the second water passing opening 53 can be communicated to the water inlet 51 through the external water channel formed by matching the shower shell and the thermostatic valve core; a second branch extends from the first water inlet 54 upward along the axial direction of the valve seat 11, and a first water passing opening 52 is provided at the top of the second branch, and the water passing direction of the first water passing opening 52 faces the water mixing chamber 64 in a manner of being slightly inclined to the axial direction. In this embodiment, only the first water inlet 54 is communicated with the cold water inlet, the cold water is communicated with the water inlet 51 through the second water passing opening 53 in the second branch, the first filter screen 14 is arranged around the position of the water inlet 51, the second filter screen 15 is arranged around the position of the second water passing opening 53, the filter base 16 is arranged at the positions of the first water inlet 54 and the hot water inlet 56, and the filter screen and the filter base 16 are both used for filtering impurities possibly existing in the inlet water. A fifth sealing ring 48 is also fitted around the valve seat 11 to form a sealing engagement with an external shower body or the like.

The water passing area of the second branch is gradually reduced behind the first water passing opening 52 along the water passing direction, the flow speed of cold water entering the water mixing cavity 64 from the first water passing opening 52 is increased to form jet flow by the reduced water passing area, and the jet flow can be quickly mixed with hot water, so that the water temperature in the water mixing cavity 64 is uniformly distributed. It should be noted that the water passing area of the second branch is gradually reduced after the first water passing opening 52, because in this embodiment, an inclined water passing channel communicating the second branch with the water mixing chamber is provided on the valve seat 11, the water inlet end of the water passing channel communicates with the first water inlet 54 to form the above-mentioned first water passing opening 52, the water outlet end of the water passing channel communicates with the water mixing chamber 64, the channel wall of the water passing channel is not completely parallel from the water inlet end to the water outlet end, but gradually approaches each other along the water inlet end to the water outlet end, and is approximately considered to form a conical shape, and at the same time, the water passing channel also belongs to a part of the second branch, so that it can be considered that the water passing area of the second branch is reduced after the first water passing opening 52, which can increase the flow velocity of the water, and can effectively improve the mixing effect of cold and hot water.

The hot water inlet 56 arranged at the bottom of the valve seat 11 extends upwards along the axial direction of the valve seat 11 to form a hot water inlet path 57, the hot water inlet path 57 is communicated with the installation chamber, and under the action of the constant temperature assembly, the hot water inlet path 57 is communicated with the water mixing cavity 64. The water outlet 55 is provided at a middle position of the valve seat 11, and extends upward to a position of the water mixing chamber 64 to form a water outlet path.

The upper cover 12 is fixed on the valve seat 11 by means of screw-thread fit, and forms sealing fit with the valve seat 11 by means of a fourth sealing ring 47, and a through hole is axially arranged in the middle of the upper cover, and is used for allowing part of the structure of the thermostatic assembly to extend out for operation of a user.

The adjusting base 13 is fixedly installed in the valve seat 11 and located in the second branch, and its upper end is supported by the step-like structure bent on the valve seat 11, and its lower end is supported by the filtering base 16, so as to be restrained and fixed in the valve seat 11.

The thermostatic assembly comprises a pushing spring 23, a temperature sensing bulb 21, a piston 22, a valve rod 27, an adjusting bolt 26, a safety spring 25 and a top cap 24; the temperature sensing bulb 21 and the piston 22 are fixedly connected with each other, the piston 22 and the valve body are matched to form a cold water passing gap and a hot water passing gap which are arranged in the axial direction of the valve body, the cold water passing gap is suitable for being communicated with the water inlet hole 51, the hot water passing gap is suitable for being communicated with the water outlet end of the hot water inlet channel 57, the temperature sensing bulb 21 is suitable for expanding or contracting according to the change of the water temperature in the water mixing cavity 64 and is abutted against the valve body to drive the piston 22 to move along the axial direction of the valve body so as to adjust the water passing area of the cold water passing gap and the hot water passing gap, and the pushing spring 23 is arranged between the temperature sensing bulb 21 and the valve body so as to apply a force for pushing the piston 22 to move towards the direction of increasing the water passing area of the hot water passing gap to the temperature sensing bulb 21; valve rod 27 and adjusting bolt 26 spiro union and expose outside the valve body for the operation, and adjusting bolt 26 is spacing cooperation with the valve body in the valve body circumferencial direction to be suitable for receiving valve rod 27 drive along the valve body axial displacement, safety spring 25 arranges in between adjusting bolt 26 and hood 24, and bulb 21 is through the butt in hood 24 with the butt in the valve body.

Specifically, referring to fig. 2 and 3, the valve rod 27 extends out of the top end of the upper cover 12, and is rotatably connected with the upper cover 12 through the first snap spring 41 and the wear-resistant piece 42, and is in sealing fit with the hole wall of the through hole in the upper cover 12 through the first seal ring 43 and the second seal ring 44, a part of the valve rod 27 extending into the upper cover 12 is in threaded fit with the adjusting bolt 26 located inside the upper cover 12, and the adjusting bolt 26 is also in spacing fit with the inside of the upper cover 12 in the circumferential direction, so that when the valve rod 27 is rotated, the adjusting bolt 26 can only move in the axial direction of the valve body, but cannot rotate. Be provided with safety spring 25 in the adjusting bolt 26, safety spring 25's one end top is at the inboard top of adjusting bolt 26, and the other end top is on top cap 24, is provided with second jump ring 45 between top cap 24 and the adjusting bolt 26, and second jump ring 45 can restrict top cap 24 and move at the valve body axial.

The top end of the temperature sensing bulb 21 abuts against the bottom end of the top cap 24, the temperature sensing bulb 21 extends into the water mixing cavity 64 and the water outlet path and can expand or contract according to the temperature of water flow in the water mixing cavity 64, meanwhile, a piston 22 is fixedly connected to the temperature sensing bulb 21, the piston 22 and the valve body form sealing fit through a third sealing ring 46, a water inlet cavity 63 is formed above the piston 22, and a water mixing cavity 64 is formed below the piston 22; the water inlet hole 51 is communicated with the water inlet cavity 63 through the cold water passing gap, the hot water inlet channel 57 is communicated with the water mixing cavity 64 through the hot water passing gap, through holes for communicating the water inlet cavity 63 with the water mixing cavity 64 are formed in the piston 22, and cold water can enter the water mixing cavity 64 through the through holes to be mixed with hot water to form warm water and then is discharged from the water outlet channel. A pushing spring 23 is sleeved below the thermal bulb 21, one end of the pushing spring 23 is abutted against the valve seat 11, and the other end is abutted against the thermal bulb 21.

When the water temperature rises, the temperature sensing bulb 21 expands, the piston 22 moves downwards, the cold water gap is enlarged, the hot water gap is reduced, and the spring 23 is pushed to contract to store energy; when the water temperature is reduced, the thermal bulb 21 contracts, the pushing spring 23 pushes the thermal bulb 21 to move upwards, the piston 22 moves upwards accordingly, the cold water gap is reduced, and the hot water gap is enlarged.

Wherein, the piston 22 is roughly cylindrical, a blocking wall for fixedly connecting with the thermal bulb 21 is arranged at the middle position in the vertical direction shown in fig. 2, a threaded hole is arranged in the middle of the blocking wall, and the thermal bulb 21 is in threaded connection with the threaded hole, so that the thermal bulb 21 can drive the piston 22 to move up and down; the periphery of the piston 22 is matched with the valve body to form the cold water passing gap 61 and the hot water passing gap 62, specifically, the cold water passing gap 61 is formed between the upper end surface of the periphery of the piston 22 and the bottom end surface of the upper cover 12, the cold water passing gap 61 is communicated with the water inlet hole 51, the valve seat 11 is provided with a step-shaped structure at a position corresponding to the lower end surface of the periphery of the piston 22, the lower end surface of the piston 22 can be matched with the step surface of the step-shaped structure to form the hot water passing gap 62 between the two, and the hot water passing gap 62 is communicated with the hot water inlet channel 57.

The water inlet control component is arranged in the valve body and comprises a temperature sensing part, an elastic part and an adjusting part; the adjusting part is suitable for sliding in a reciprocating manner relative to the valve body along the water inlet direction of the first water passing port 52 and is provided with a blocking surface facing the first water passing port 52, and the blocking surface is suitable for blocking the first water passing port 52 so as to cut off the waterway communication from the water inlet end of the second branch to the water mixing cavity 64; the temperature sensing part is suitable for expanding to push the adjusting part to be far away from the first water passing opening 52 when the temperature of the cold water in the water inlet channel is increased and contracting when the temperature of the water is reduced; the elastic part is suitable for being contracted by the regulating part when the temperature sensing part expands so as to store elastic potential energy, and releases the stored elastic potential energy when the temperature sensing part contracts so as to push the regulating part to be close to the first water passing opening 52. The adjusting part penetrates through the adjusting base 13 to form sliding fit with the valve body, and the temperature sensing part and the elastic part are respectively abutted against the adjusting base 13 to apply force for driving the adjusting part to slide relative to the valve body.

Specifically, the water inlet control assembly comprises a temperature sensing spring 34, a return spring 33, a sliding rod 32, a clamping sheet and a blocking block 31; the temperature sensing spring 34 forms a temperature sensing part, the return spring 33 forms an elastic part, and the sliding rod 32 is fixedly connected with the clamping sheet and the plugging block 31 to form an adjusting part; the sliding rod 32 is slidably arranged on the valve body along a first direction, one end of the sliding rod, which is close to the first water passing port 52, is fixedly connected with the blocking block 31, and the other end, which is far away from the first water passing port 52, is fixedly clamped with the clamping sheet so as to form a flange protruding out of the side wall of the sliding rod 32 through the clamping sheet; one end of the temperature sensing spring 34 is abutted against the valve body, and the other end is abutted against the flange; one end of the return spring 33 is abutted against the valve body, and the other end is abutted against one side of the blocking block 31 departing from the first water passing opening 52; the surface of one side of the blocking block 31 facing the water passing opening forms a blocking surface.

Wherein, a clamping groove is concavely arranged at one end of the sliding rod 32 far away from the first water passing opening 52; the clamping piece is suitable for being sleeved outside the sliding rod 32 and inserted into the clamping groove to be clamped and matched with the sliding rod 32. Specifically, the card-connecting piece in this embodiment includes a first card-connecting piece 35 and a second card-connecting piece 36, both of which can be inserted into the sliding rod 32 from below and then inserted into the card-connecting groove together, the width of the card-connecting groove is adapted to the thickness of the first card-connecting piece 35 and the second card-connecting piece 36, wherein the first card-connecting piece 35 is located above the second card-connecting piece 36, and the first card-connecting piece 35 is a conventional circular hole-shaped gasket, the first card-connecting piece 35 can increase the contact area between the second card-connecting piece 36 and the sliding rod 32, while the circular hole on the second card-connecting piece 36 is in an eccentric structure, when installing, the first card-connecting piece 35 is first inserted on the sliding rod 32, and then the second card-connecting piece 36 is inserted on the sliding rod 32 and located below the first card-connecting piece 35, at this time, the second card-connecting piece 36 has a part to exceed the range of the first card-connecting piece 35, and then the second card-connecting piece 36 is pressed from the side, so that the second card-connecting piece 36 can also be inserted into the card-connecting groove.

The top of the adjusting base 13 is formed with a contact portion 131 extending along the horizontal direction shown in fig. 2, a sliding contact hole 132 penetrating along the vertical direction is formed at the middle position of the contact portion, and the sliding rod 32 can pass through the sliding contact hole 132 on the contact portion 131, so as to be in sliding fit with the valve body in the vertical direction. In addition, the abutting portion 131 divides the second branch into an upper portion and a lower portion, and the temperature sensing portion and the elastic member are respectively located below and above the abutting portion 131 and abut against the abutting portion 131 to apply a force to the adjusting portion to drive the adjusting portion to slide relative to the valve body.

When the device is installed, the blocking block 31 is installed at the top end of the sliding rod 32, the blocking block 31 is made of rubber, has certain deformation capacity and can be fixed on the sliding rod 32 in an elastic deformation mode, and a blocking surface is formed on one side surface, facing the first water passing port 52, of the blocking block 31; then, the reset spring 33 is sleeved on the sliding rod 32, the sliding rod 32 passes through the sliding connection hole 132 on the contact portion 131 from top to bottom, at this time, two ends of the reset spring 33 are respectively abutted on the upper side surfaces of the sliding rod 32 and the contact portion 131, then, the temperature sensing spring 34 is sleeved on the sliding rod 32 from bottom to top, then, the clamping sheet is clamped into the clamping groove, and at this time, two ends of the temperature sensing spring 34 are respectively abutted on the flange formed by the clamping groove and the lower side surface of the contact portion 131.

The first water inlet 54 is always communicated with cold water inlet, so that the temperature sensing spring 34 can deform in real time according to the temperature of the cold water, when the temperature of the cold water rises, the temperature sensing spring 34 extends, the sliding rod 32 moves downwards at the moment, the reset spring 33 is pressed to contract, the blocking block 31 leaves the position of the first water passing opening 52, the cold water directly reaches the water mixing cavity 64 from the first water inlet 54 through the first water passing opening 52, meanwhile, part of the cold water reaches the water inlet hole 51 from the second water passing opening 53 through an external water channel and then enters the water inlet cavity 63 through the water inlet hole 51, the water inlet amount of the cold water in the water inlet cavity 63 is increased, the water inlet amount of the cold water in the water mixing cavity 64 is also increased, and the water inlet amount of the hot water is also increased; when the temperature of cold water is lowered, the temperature sensing spring 34 contracts, the sliding rod 32 moves upwards under the action of the return spring 33, the blocking part is close to the first water passing port 52 until the blocking surface blocks the first water passing port 52, cold water can only enter the water inlet cavity 63 through the second water passing port 53 and the water inlet hole 51, the water inlet amount of the cold water is small, and the water temperature of the cold water is low, so that the water inlet amount of the hot water can be kept at a proper degree.

In addition, the embodiment of the invention also provides a shower which comprises a shower body and the thermostatic valve core provided by the embodiment, wherein the shower body is suitable for receiving cold water inlet and hot water inlet and outputting mixed water after inputting the cold water inlet and the hot water inlet into the thermostatic valve core, the cold water inlet waterway of the thermostatic valve core is communicated with the waterway of the shower body receiving the cold water inlet, the hot water inlet waterway 57 of the thermostatic valve core is communicated with the waterway of the shower body receiving the hot water inlet, and the water outlet waterway of the thermostatic valve core is communicated with the waterway of the shower body outputting the mixed water.

According to the thermostatic valve core and the shower, in the thermostatic valve core, cold water enters the water mixing cavity 64 through the cold water inlet channel, hot water enters the water mixing cavity 64 through the hot water inlet channel 57, the cold water and the hot water are mixed into warm water in the water mixing cavity 64 and then are output from the water outlet channel, and the thermostatic assembly plays a role in ensuring that the temperature of the warm water output from the water outlet channel is kept in a proper range; the cold water inlet path comprises a first branch and a second branch, both of which can be connected with cold water, a first water passing port 52 is arranged in the second branch, a water inlet control assembly is arranged in the valve body, a temperature sensing part in the water inlet control assembly can drive the adjusting part to move and open the first water passing port 52 when the water temperature rises, at the moment, the cold water can directly enter the water mixing cavity 64 from the first water passing port 52, the cold water does not need to enter the water mixing cavity 64 through the first branch, the cold water can directly cool the water flow in the water mixing cavity 64, the hot water flow can be correspondingly increased, and therefore the situation that the gas water heater cannot be used due to overhigh temperature of the cold water is effectively avoided, when the temperature of the cold water is lower, the elastic part can drive the adjusting part to move and close the first water passing port 52, at the moment, the flow of the cold water supplemented from the second branch is cut off, and the cold water flow entering the water mixing cavity 64 from the first branch can be enough to normally used; the thermostatic valve core can automatically control whether the flow rate is supplemented for cold water inlet or not according to the temperature of cold water by integrating the water inlet control assembly in the valve body, a user does not need to manually switch, and the flow rate can be adjusted according to the temperature of the cold water, so that the thermostatic valve core can better play a role in matching the water inlet flow rate with the water outlet temperature when the water temperature changes, therefore, the user can obtain more consistent use experience under the conditions of higher temperature of the cold water in summer and lower temperature of the cold water in winter, and the use satisfaction and comfort of the user are effectively improved; moreover, the thermostatic assembly can effectively improve the safety of the thermostatic valve core, and can rapidly adjust the water inflow of cold water and hot water when the temperature of mixed water is suddenly increased or suddenly reduced, so that a user is prevented from being scalded or stimulated by the cold water.

The description of the above specification and examples is intended to be illustrative of the scope of the present invention and is not intended to be limiting. Modifications, equivalents and other improvements which may occur to those skilled in the art and which may be made to the embodiments of the invention or portions thereof through a reasonable analysis, inference or limited experimentation, in light of the common general knowledge, the common general knowledge in the art and/or the prior art, are intended to be within the scope of the invention.

Claims (10)

1. A thermostatic cartridge characterized by comprising:

the valve body is provided with a water mixing cavity (64), and a cold water inlet channel, a hot water inlet channel (57) and a water outlet channel which are communicated with the water mixing cavity (64); the cold water inlet path comprises a first branch and a second branch, and the second branch is provided with a first water passing port (52) directly communicated with the water mixing cavity (64);

the thermostatic assembly is arranged in the valve body and is suitable for adjusting the water passing flow of the cold water inlet channel and the hot water inlet channel (57) which are respectively communicated to the water mixing cavity (64) according to the water temperature change in the water mixing cavity (64); and

the water inlet control component is arranged in the valve body and comprises a temperature sensing part, an elastic part and an adjusting part; the adjusting part is suitable for sliding in a reciprocating manner relative to the valve body along the water inlet direction of the first water passing port (52) and is provided with a blocking surface facing the first water passing port (52), and the blocking surface is suitable for blocking the first water passing port (52) so as to cut off the water path communication from the water inlet end of the second branch to the water mixing cavity (64); the temperature sensing part is suitable for expanding to push the adjusting part to be away from the first water passing opening (52) when the temperature of the cold water in the cold water inlet channel is increased, and contracting when the temperature of the water is reduced; the elastic part is suitable for being contracted under the action of the adjusting part when the temperature sensing part expands so as to store elastic potential energy, and releases the stored elastic potential energy when the temperature sensing part contracts so as to push the adjusting part to be close to the first water passing opening (52).

2. A thermostatic cartridge according to claim 1, characterized in that the valve body is provided with a first water inlet (54), a second water passage opening (53) and a water inlet opening (51); the first water inlet (54) is communicated to the first water passing opening (52) to form the second branch and is suitable for switching a communication state through the water inlet control assembly, and the first water inlet (54) is always communicated with the second water passing opening (53); the second water passing opening (53) is communicated with the water inlet hole (51), the water inlet hole (51) is communicated with the water mixing cavity (64), and the water inlet hole (51) forms the first branch.

3. A thermostatic cartridge according to claim 2, wherein the flow area of the second branch decreases in the flow direction after the first flow opening (52).

4. A thermostatic cartridge according to claim 3, characterized in that the first water inlet (54) is provided at the bottom of the valve body; the second water passing opening (53) and the water inlet hole (51) are formed in the side portion of the valve body, and the water inlet hole (51) is located above the second water passing opening (53).

5. The thermostatic cartridge according to claim 4, wherein the water inlet control assembly includes a temperature sensing spring (34), a return spring (33), a slide rod (32), a snap tab and a blocking block (31); the temperature sensing spring (34) forms the temperature sensing part, the return spring (33) forms the elastic part, and the sliding rod (32) is fixedly connected with the clamping sheet and the blocking block (31) to form the adjusting part; the sliding rod (32) is arranged on the valve body in a sliding manner along the water passing direction of the first water passing port (52), one end of the sliding rod, which is close to the first water passing port (52), is fixedly connected with the blocking block (31), and the other end of the sliding rod, which is far away from the first water passing port (52), is fixedly clamped with the clamping sheet so as to form a flange protruding out of the side wall of the sliding rod (32) through the clamping sheet; one end of the temperature sensing spring (34) is abutted against the valve body, and the other end of the temperature sensing spring is abutted against the flange; one end of the return spring (33) is abutted to the valve body, and the other end of the return spring is abutted to one side, away from the first water passing port (52), of the blocking block (31); the surface of one side of the blocking block (31) facing the first water passing opening (52) forms the blocking surface.

6. The thermostatic cartridge according to claim 5, wherein a clamping groove is concavely formed at one end of the sliding rod (32) far away from the first water passing opening (52); the clamping sheet is suitable for being sleeved outside the sliding rod (32) and inserted into the clamping groove to be in clamping fit with the sliding rod (32).

7. A thermostatic cartridge according to claim 6, wherein the thermostatic assembly includes a push spring (23) and a bulb (21) and a piston (22) secured to each other; the piston (22) is matched with the valve body to form a cold water passing gap and a hot water passing gap which are arranged in the axial direction of the valve body, the cold water passing gap is suitable for being communicated with the water inlet hole (51), and the hot water passing gap is suitable for being communicated with the water outlet end of the hot water inlet channel (57); the temperature sensing bulb (21) is suitable for expanding or contracting according to the change of the water temperature in the water mixing cavity (64) and drives the piston (22) to move axially along the valve body by abutting against the valve body so as to adjust the water passing areas of the cold water passing gap and the hot water passing gap; the pushing spring (23) is arranged between the temperature sensing bulb (21) and the valve body so as to apply force for pushing the piston (22) to move towards the direction of increasing the water passing area of the hot water passing gap to the temperature sensing bulb (21).

8. A thermostatic cartridge according to claim 7, wherein the thermostatic assembly further comprises a valve stem (27), an adjusting bolt (26), a relief spring (25) and a top cap (24); the valve rod (27) is in threaded connection with the adjusting bolt (26) and is exposed out of the valve body for operation; the adjusting bolt (26) is in limit fit with the valve body in the circumferential direction of the valve body and is suitable for being driven by the valve rod (27) to move axially along the valve body; the safety spring (25) is arranged between the adjusting bolt (26) and the top cap (24), and the temperature sensing bulb (21) is abutted to the valve body through abutting against the top cap (24).

9. A thermostatic cartridge according to claim 8, characterized in that the valve body comprises a valve seat (11), an upper cover (12) and an adjustment base (13); the valve seat (11) is fixedly connected with the upper cover (12) to form an installation chamber of the constant temperature component; the valve seat (11) is provided with the first water inlet (54), the first water passing port (52), the second water passing port (53) and a water inlet hole (51), and the adjusting base (13) is fixedly arranged on the valve seat (11) and is positioned between the first water inlet (54) and the first water passing port (52); the adjusting part penetrates through the adjusting base (13) to form sliding fit with the valve body, and the temperature sensing part and the elastic part are respectively abutted against the adjusting base (13) to apply force for driving the adjusting part to slide relative to the valve body.

10. A shower comprising a shower body and a thermostatic cartridge as claimed in any one of claims 1 to 9; the shower body is suitable for being connected with cold water inlet and hot water inlet and outputting mixed water after being input to the thermostatic valve core; the cold water inlet channel of the thermostatic valve core is communicated with the water channel of the shower body for accessing cold water, the hot water inlet channel (57) of the thermostatic valve core is communicated with the water channel of the shower body for accessing hot water, and the water outlet channel of the thermostatic valve core is communicated with the water channel of the shower body for outputting mixed water.

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