CN219317778U - Water outlet temperature adjusting device and water outlet device - Google Patents

Abstract

The utility model discloses a water outlet temperature adjusting device and a water outlet device, which both comprise: the side wall of the valve housing assembly is provided with a cold water inlet and a hot water inlet at intervals along the up-down direction; the piston is arranged in the valve shell assembly in a sliding manner, a cold water inlet channel is defined between the upper end of the piston and the valve shell assembly, and a hot water inlet channel is defined between the lower end of the piston and the valve shell assembly; the temperature sensing element is connected with the piston and can drive the piston to slide so as to adjust the sizes of the cold water inlet channel and the hot water inlet channel; a first balance cavity communicated with a cold water inlet is arranged between the upper part of the outer peripheral wall of the piston and the inner peripheral wall of the valve housing assembly, and a second balance cavity communicated with a hot water inlet is arranged between the lower part of the outer peripheral wall of the piston and the inner peripheral wall of the valve housing assembly. The water outlet temperature adjusting device and the water outlet device are beneficial to reducing the influence of water pressure on the sliding of the piston, reducing the thrust required by driving the piston to slide, reducing the load of the temperature sensing element to prolong the service life, and guaranteeing the accuracy and response rate of water temperature adjustment.

Description

Water outlet temperature adjusting device and water outlet device

Technical Field

The utility model relates to the technical field of bathroom faucets, in particular to a water outlet temperature adjusting device and a water outlet device.

Background

The constant temperature valve core is a temperature control device arranged in the constant temperature faucet and is used for automatically adjusting the mixing proportion of cold water and hot water and ensuring that the outlet water temperature is kept constant. The temperature of the mixed water is detected mainly through the temperature package in the constant temperature valve core, and the temperature package stretches out and draws back according to the detected temperature, so that the upper and lower sliding of the pushing piston is utilized to change the mixing proportion of cold water and hot water, and the temperature of the discharged water is ensured to be kept constant.

The constant temperature case includes the valve casing subassembly, the lateral wall of valve casing subassembly is equipped with hot water inlet and cold water inlet, the piston slides and locates in the valve casing subassembly, form the cold water inlet channel of intercommunication cold water inlet between the upper end of piston and the valve casing subassembly, form the hot water inlet channel of intercommunication hot water inlet between the lower extreme of piston and the valve casing subassembly, the temperature package lower extreme is the temperature sensing portion, the upper end is telescopic push rod, the middle part contacts or links to each other with the piston, when external temperature changes, the temperature sensing portion volume changes, thereby drive the piston and remove in order to change cold water inlet channel and hot water inlet channel.

In order to prevent the push rod from damaging the temperature bulb when the water temperature is too high, an overload spring is often arranged at the upper end of the push rod, meanwhile, in order to help the temperature bulb return when the temperature is reduced, a working spring is arranged at the lower end of the piston, and the force values of the overload spring and the working spring are set according to the thrust required by the sliding of the piston.

However, the general piston and the valve shell component are in clearance fit, water enters the cold water inlet channel and the hot water inlet channel and enters the clearance between the piston and the valve shell component, the water pressure in the clearance between the piston and the valve shell component is unbalanced, larger thrust is easily caused to local positions, larger resistance is formed to the reciprocating sliding of the piston, and further the service life of the thermostatic valve core is influenced when the temperature bulb is in a high-load state for a long time; in addition, in the sliding and lifting process of a common piston, the stress is unbalanced in the circumferential direction of the piston, so that the phenomenon of sliding jam is caused, the piston cannot slide smoothly, and the response speed and the adjustment accuracy of the constant-temperature valve core in water temperature adjustment are affected.

Disclosure of Invention

In order to overcome the defects of the prior art, one of the purposes of the utility model is to provide a water outlet temperature regulating device which has smaller load on a temperature sensing element so as to prolong the service life and balance the stress of a piston so as to ensure the accuracy and the speed of water temperature regulation; and the second purpose is to provide a water outlet device adopting the water outlet temperature regulating device.

According to an embodiment of the first aspect of the present utility model, a water outlet temperature adjusting device includes: the side wall of the valve housing assembly is provided with a cold water inlet and a hot water inlet at intervals along the up-down direction; the piston is arranged in the valve housing assembly in a sliding manner, a cold water inlet channel communicated with the cold water inlet is defined between the upper end of the piston and the valve housing assembly, and a hot water inlet channel communicated with the hot water inlet is defined between the lower end of the piston and the valve housing assembly; the temperature sensing element is connected with the piston and can drive the piston to slide so as to adjust the sizes of the cold water inlet channel and the hot water inlet channel;

the upper part of the outer peripheral wall of the piston is communicated with the inner peripheral wall of the valve housing assembly, a first balance cavity communicated with the cold water inlet is formed between the upper part of the outer peripheral wall of the piston and the inner peripheral wall of the valve housing assembly, and a second balance cavity communicated with the hot water inlet is formed between the lower part of the outer peripheral wall of the piston and the inner peripheral wall of the valve housing assembly.

The water outlet temperature regulating device provided by the embodiment of the first aspect of the utility model has at least the following beneficial effects:

when the piston slides relative to the valve housing assembly and cold water enters the cold water inlet channel from the cold water inlet, part of cold water can enter the first balance cavity, the first balance cavity is arranged around the circumference of the piston to balance the pressure of the cold water in the first balance cavity, when hot water enters the hot water inlet channel from the hot water inlet, part of hot water can enter the second balance cavity, the second balance cavity is arranged around the circumference of the piston to balance the pressure of the hot water in the second balance cavity, so that the influence of water pressure on the sliding of the piston is reduced, the thrust required by driving the piston to slide is reduced, the load on the temperature sensing element is reduced to prolong the service life of the water outlet temperature regulating device, and the stress balance of the piston is favorable for guaranteeing the accuracy and response speed of water temperature regulation.

In some embodiments of the present utility model, the upper end of the piston is provided with a first annular protrusion protruding along its outer circumferential wall, and the lower end of the piston is provided with a second annular protrusion protruding along its outer circumferential wall, the upper balance chamber being defined between the first annular protrusion, the annular sealing protrusion and the inner circumferential wall of the valve housing assembly, and the lower balance chamber being defined between the second annular protrusion, the annular sealing protrusion and the inner circumferential wall of the valve housing assembly.

In some embodiments of the present utility model, the distance by which the first annular protrusion protrudes from the outer circumferential wall of the piston in the radial direction of the piston coincides with the distance by which the annular seal protrudes from the outer circumferential wall of the piston in the radial direction of the piston, and the distance by which the second annular protrusion protrudes from the outer circumferential wall of the piston in the radial direction of the piston coincides with the distance by which the annular seal protrudes from the outer circumferential wall of the piston in the radial direction of the piston.

In some embodiments of the utility model, when the piston moves to close the cold water inlet channel or the hot water inlet channel, the first balancing chamber remains in communication with the cold water inlet and the second balancing chamber remains in communication with the hot water inlet.

In some embodiments of the present utility model, the outer circumferential wall of the piston is provided with a plurality of guide ribs distributed around the central circumference of the piston, the guide ribs being provided to extend in the up-down direction to be connected to the first annular protrusion, the annular seal and the second annular protrusion.

In some embodiments of the utility model, the valve housing assembly is cylindrical, and the outer peripheral wall of the valve housing assembly has a plurality of the cold water inlets and the hot water inlets distributed around an axial circumference of the valve housing assembly.

In some embodiments of the present utility model, a cold water inlet cavity capable of communicating with the cold water inlet channel is formed between the upper part of the piston and the valve housing assembly, a warm water mixing cavity is formed between the lower part of the piston and the valve housing assembly, the temperature sensing element penetrates through the middle part of the piston, the piston is provided with a plurality of water passing channels distributed around the circumference of the temperature sensing element, and the water passing channels communicate the cold water inlet cavity with the warm water mixing cavity.

In some embodiments of the present utility model, a working spring abutting against the piston to drive the piston to move upwards is arranged in the warm water mixing cavity, an overload spring abutting against the upper end of the temperature sensing element is arranged in the valve housing assembly, a water-proof sealing piece in sealing connection with the temperature sensing element and the valve housing assembly is sleeved on the upper portion of the temperature sensing element, the cold water inlet cavity is defined between the water-proof sealing piece and the piston, and a sealing cavity above the cold water inlet cavity is defined between the water-proof sealing piece and the valve housing assembly.

In some embodiments of the present utility model, a temperature-adjusting valve rod is rotatably disposed at the upper end of the valve housing assembly, the temperature-adjusting valve rod is in threaded connection with a valve rod sleeve capable of moving up and down relative to the valve housing assembly, a pressing piece abutted against the upper end of the temperature sensing element is elastically connected to the valve rod sleeve, and the junction of the temperature-adjusting valve rod and the valve rod sleeve and the pressing piece are both located in the sealing cavity.

According to a second aspect of the present utility model, a water outlet device includes a water outlet temperature adjusting device according to any one of the above-mentioned aspects.

The water outlet device according to the embodiment of the second aspect of the utility model has at least the following beneficial effects:

the water outlet device adopting the water outlet temperature adjusting device can accurately and quickly realize the adjustment of water temperature, and the temperature sensing element receives smaller load, thereby being beneficial to prolonging the service life of the water outlet device.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is a schematic view of an outlet water temperature adjusting device according to the present utility model;

FIG. 2 is a schematic internal cross-sectional view of the embodiment of FIG. 1;

FIG. 3 is a schematic view of the combination of the lower valve housing and piston of the embodiment of FIG. 1;

FIG. 4 is a schematic illustration of an embodiment of a piston;

fig. 5 is a schematic structural view of another embodiment of a piston.

Reference numerals:

a valve housing assembly 100; a cold water inlet 101; a hot water inlet 102; a cold water inlet passage 103; a hot water inlet passage 104; an upper valve housing 110; a lower valve housing 120; a warm water mixing chamber 121;

a piston 200; a first balance chamber 201; a second balance chamber 202; a cold water inlet chamber 203; an annular seal 210; a first annular protrusion 220; a first communication port 221; a second annular protrusion 230; a second communication port 231; guide ribs 240; a water passage 250;

a temperature sensing element 300;

a working spring 410; an overload spring 420;

a water blocking seal 500; a sealed cavity 510;

a temperature regulating valve stem 610; valve stem sleeve 620; pressing member 630.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 to 4, a water outlet temperature adjusting apparatus of the present utility model includes: the valve housing assembly 100, the sidewall of the valve housing assembly 100 is provided with a cold water inlet 101 and a hot water inlet 102 at intervals in the up-down direction; the piston 200 is slidably arranged in the valve housing assembly 100, a cold water inlet channel 103 communicated with the cold water inlet 101 is defined between the upper end of the piston 200 and the valve housing assembly 100, and a hot water inlet channel 104 communicated with the hot water inlet 102 is defined between the lower end of the piston 200 and the valve housing assembly 100; the temperature sensing element 300 is connected with the piston 200 and can drive the piston 200 to slide so as to adjust the sizes of the cold water inlet channel 103 and the hot water inlet channel 104; wherein, a first balance cavity 201 communicating with the cold water inlet 101 is provided between the upper part of the outer peripheral wall of the piston 200 and the inner peripheral wall of the valve housing assembly 100, and a second balance cavity 202 communicating with the hot water inlet 102 is provided between the lower part of the outer peripheral wall of the piston 200 and the inner peripheral wall of the valve housing assembly 100.

When the piston 200 slides relative to the valve housing assembly 100 and cold water enters the cold water inlet channel 103 from the cold water inlet 101, part of the cold water can enter the first balance cavity 201, the first balance cavity 201 is arranged around the circumference of the piston 200 so that the pressure of the cold water in the first balance cavity 201 is balanced, when hot water enters the hot water inlet channel 104 from the hot water inlet 102, part of the hot water can enter the second balance cavity 202, the second balance cavity 202 is arranged around the circumference of the piston 200 so that the pressure of the hot water in the second balance cavity 202 is balanced, thereby reducing the influence of the water pressure on the sliding of the piston 200, reducing the probability of jamming of the piston 200, reducing the thrust required for driving the piston 200 to slide, improving the smoothness of the reciprocating sliding of the piston 200, being beneficial to reducing the load on the temperature sensing element 300 so as to prolong the service life of the water temperature adjusting device, and ensuring the accuracy and the response rate of the water temperature adjustment due to the stress balance of the piston 200.

The up-down direction of the outlet water temperature adjusting device of the present utility model is shown in fig. 1 and 2. It will be appreciated that when the valve housing assembly 100 is in a transverse position, the first and second balance chambers 201, 202 are located at the left and right ends of the piston 200, respectively, or the first and second balance chambers 201, 202 are located at the right and left ends of the piston 200, respectively.

Referring to fig. 3 and 4, in some embodiments of the present utility model, a middle portion of an outer circumferential wall of the piston 200 is provided with an annular sealing member 210 abutting against an inner circumferential wall of the valve housing assembly 100, an upper end of the piston 200 is convexly provided with a first annular protrusion 220 along the outer circumferential wall thereof, a lower end of the piston 200 is convexly provided with a second annular protrusion 230 along the outer circumferential wall thereof, a first balance chamber 201 is defined between the first annular protrusion 220, the annular sealing member 210 and the inner circumferential wall of the valve housing assembly 100, and a second balance chamber 202 is defined between the second annular protrusion 230, the annular sealing member 210 and the inner circumferential wall of the valve housing assembly 100.

It will be appreciated that when cold water enters the first balance chamber 201, the cold water in the first balance chamber 201 acts on the upper surface of the annular seal 210 and the first annular protrusion 220, respectively, so as to counteract the external force of the cold water acting on at least part of the piston 200, and the first balance chamber 201 is disposed around the periphery of the piston 200, so that the cold water in the first balance chamber 201 has uniform height and uniform water pressure, which is beneficial to uniform stress of the piston 200. Similarly, when hot water enters the second balance cavity 202, the hot water in the second balance cavity 202 acts on the lower surface of the annular sealing element 210 and the second annular convex part 230 respectively, so that external force of the hot water acting on at least part of the piston 200 can be counteracted, the second balance cavity 202 is arranged around the periphery of the piston 200, and the hot water in the second balance cavity 202 has the same height and water pressure, so that uniform stress of the piston 200 is facilitated, and the sliding of the piston 200 is smoother and stable.

Referring to fig. 3, 4 and 5, in some embodiments of the present utility model, the distance by which the first annular protrusion 220 protrudes from the outer circumferential wall of the piston 200 in the radial direction of the piston 200 coincides with the distance by which the annular seal 210 protrudes from the outer circumferential wall of the piston 200 in the radial direction of the piston 200, and the distance by which the second annular protrusion 230 protrudes from the outer circumferential wall of the piston 200 in the radial direction of the piston 200 coincides with the distance by which the annular seal 210 protrudes from the outer circumferential wall of the piston 200 in the radial direction of the piston 200.

It should be noted that, because the water pressure in the first balance chamber 201 is consistent, when the distance of the first annular protrusion 220 protruding from the outer circumferential wall of the piston 200 along the radial direction of the piston 200 is consistent with the distance of the annular seal 210 protruding from the outer circumferential wall of the piston 200 along the radial direction of the piston 200, that is, the areas of the cold water acting on the annular seal 210 and the first annular protrusion 220 are equal in the vertical direction, the forces of the cold water acting on the annular seal 210 and the first annular protrusion 220 are offset, the piston 200 is not affected by the cold water pressure, and the load applied to the temperature sensing element 300 connected to the piston 200 is small when the piston 200 moves. Since the water pressure in the second balance chamber 202 is uniform, when the distance of the second annular protrusion 230 protruding from the outer circumferential wall of the piston 200 in the radial direction of the piston 200 is uniform with the distance of the annular seal 210 protruding from the outer circumferential wall of the piston 200 in the radial direction of the piston 200, that is, the areas of the hot water acting on the annular seal 210 and the second annular protrusion 230 are equal in the vertical direction, the forces of the hot water acting on the annular seal 210 and the second annular protrusion 230 cancel each other, and the piston 200 is free from the influence of the hot water pressure, and the load applied to the temperature sensing element 300 connected to the piston 200 is small when the piston 200 moves. Therefore, the piston 200 is hardly affected by the water pressure at the cold water inlet 101 and the hot water inlet 102, which is beneficial to truly feeding back the deformation of the temperature sensing element 300 to the displacement of the piston 200, helping the water outlet temperature adjusting device to accurately adjust the sizes of the cold water inlet channel 103 and the hot water inlet channel 104, thereby achieving the effect of accurately controlling the water temperature and being beneficial to prolonging the service life of the water outlet temperature adjusting device.

Referring to fig. 3, in some embodiments of the present utility model, when the piston 200 moves to close the cold water inlet channel 103 or the hot water inlet channel 104, the first balance chamber 201 remains in communication with the cold water inlet 101 and the second balance chamber 202 remains in communication with the hot water inlet 102. Specifically, a first communication port 221 is provided between the first annular protrusion 220 and the cold water inlet 101, a second communication port 231 is provided between the second annular protrusion 230 and the hot water inlet 102, cold water at the cold water inlet 101 enters the first balance chamber 201 from the first communication port 221, and hot water at the hot water inlet 102 enters the second balance chamber 202 from the second communication port 231. When the piston 200 moves to close the hot water inlet passage 104, the first communication port 221 is contracted, but the first communication port 221 still keeps the cold water inlet 101 and the first balance chamber 201 in communication, the second communication port 231 is expanded, and the second communication port 231 keeps the hot water inlet 102 and the second balance chamber 202 in communication; when the piston 200 moves to close the cold water inlet passage 103, the first communication port 221 expands and the second communication port 231 contracts, the first communication port 221 keeps the cold water inlet 101 and the first balance chamber 201 in communication, and the second communication port 231 keeps the hot water inlet 102 and the second balance chamber 202 in communication; thereby ensuring that the thrust required for the movement of the piston 200 is not affected.

Referring to fig. 5, in some embodiments of the present utility model, the outer circumferential wall of the piston 200 is provided with a plurality of guide ribs 240 distributed around the center circumference of the piston 200, and the guide ribs 240 are extended in the up-down direction to be connected to the first annular protrusion 220, the annular seal 210, and the second annular protrusion 230. It will be appreciated that the provision of a plurality of guide ribs 240 distributed around the central circumference of the piston 200 has a guiding effect on the sliding of the piston 200 in the up-down direction. When the annular sealing member 210 slides up and down along the inner circumferential wall of the valve housing assembly 100, the annular sealing member 210 is easily deformed in the up and down direction, so that the movement of the piston 200 is affected, and the guide rib 240 can have a supporting effect on the annular sealing member 210 in the up and down direction, reducing unnecessary deformation of the annular sealing member 210.

In addition, in general, the annular seal 210 is held in contact with the inner peripheral wall of the valve housing assembly 100 by elastic deformation thereof to achieve a sealing effect, thereby isolating the first balance chamber 201 and the second balance chamber 202 from the cold water and the hot water, and thus the annular seal 210 is made of a soft rubber material. In this embodiment, the annular seal 210 and the piston 200 are two separate pieces, and then the annular seal 210 is fixed to the piston 200. When the piston 200 is also made of plastic, the annular seal 210 and the piston 200 may be connected by ultrasonic plastic welding or adhesive fixing. Of course, in other embodiments, the annular seal 210 is mounted to the piston 200 by other means, or the annular seal 210 and the piston 200 are of unitary plastic construction.

Referring to fig. 1 and 2, in some embodiments of the present utility model, the valve housing assembly 100 is cylindrical, and a plurality of cold water inlets 101 and hot water inlets 102 are distributed around the axial circumference of the valve housing assembly 100 on the outer circumferential wall of the valve housing assembly 100, so that cold water uniformly enters the first balance chamber 201, hot water uniformly enters the second balance chamber 202, excessive water inlet pressure at a local position of the piston 200 caused by a single cold water inlet 101 or hot water inlet 102 is avoided, and smooth sliding of the piston 200 is ensured.

Referring to fig. 2, in some embodiments of the present utility model, a cold water inlet chamber 203 capable of communicating with the cold water inlet channel 103 is provided between an upper portion of the piston 200 and the valve housing assembly 100, a warm water mixing chamber 121 is provided between a lower portion of the piston 200 and the valve housing assembly 100, the temperature sensing element 300 is provided to penetrate through a middle portion of the piston 200, the piston 200 is provided with a plurality of water passing channels 250 distributed around a circumference of the temperature sensing element 300, and the water passing channels 250 communicate the cold water inlet chamber 203 with the warm water mixing chamber 121.

Specifically, in order to facilitate assembly of the temperature sensing element 300, the piston 200, and other components, the valve housing assembly 100 includes an upper valve housing 110 and a lower valve housing 120, the upper valve housing 110 and the lower valve housing 120 are detachably connected through a screw structure, and the upper valve housing 110 and the lower valve housing 120 are also detachably connected to facilitate maintenance or repair. In this embodiment, the cold water inlet 101 and the hot water inlet 102 are both provided on the side wall of the lower valve housing 120, and in order to isolate large particles of foreign substances, the outer surface of the lower valve housing 120 is provided with a filter screen covering the cold water inlet 101 and the hot water inlet 102. The piston 200 of the temperature sensing element 300 is slidably disposed in the lower valve housing 120, the warm water mixing chamber 121 is disposed in the lower valve housing 120, the lower end surface of the upper valve housing 110 is opposite to the upper end surface of the piston 200 to define the cold water inlet channel 103, the piston 200 has a concave cavity recessed downward along the upper end surface of the piston 200, the water passing channel 250 is disposed through the concave cavity, and the cold water inlet chamber 203 is defined between the concave cavity and the upper valve housing 110.

The temperature sensing element 300 includes a temperature sensing portion made of a temperature sensing material and a push rod connected to the temperature sensing portion, and the push rod extends upwards to be used for leaning against the temperature adjusting assembly. When the water outlet temperature regulating device is used, cold water enters from the cold water inlet 101, passes through the cold water inlet channel 103 and then enters the cold water inlet cavity 203, then cold water flows into the warm water mixing cavity 121 through the water outlet channel 250, meanwhile, hot water enters from the hot water inlet 102 and enters the warm water mixing cavity 121 after passing through the hot water inlet channel 104, hot water and cold water are mixed in the warm water mixing cavity 121, and then the temperature sensing part of the warm water path senses the temperature of the warm water to expand or contract, so that the piston 200 is driven to move up and down. The plurality of water passages 250 circumferentially distributed around the temperature sensing element 300 facilitate the flow of cold water to a plurality of locations of the mixing chamber, facilitate the rapid mixing of the cold water and the hot water, and also prevent the cold water from being retained in the cold water inlet chamber 203 and exerting a downward force on the piston 200, and prevent the piston 200 from moving upward to reduce the impact on the cold water inlet passage 103.

Referring to fig. 2, in some embodiments of the present utility model, a working spring 410 abutting against the piston 200 to drive the piston 200 to move upward is provided in the warm water mixing chamber 121, an overload spring 420 abutting against the upper end of the temperature sensing element 300 is provided in the valve housing assembly 100, a water blocking seal 500 sealing-connected with the temperature sensing element 300 and the valve housing assembly 100 respectively is provided at the upper portion of the temperature sensing element 300, a cold water inlet chamber 203 is defined between the water blocking seal 500 and the piston 200, and a sealing chamber 510 above the cold water inlet chamber 203 is defined between the water blocking seal 500 and the valve housing assembly 100. It will be appreciated that when the temperature of the warm water in the warm water mixing chamber 121 is lower than the set temperature, the temperature sensing element 300 contracts to drive the piston 200 to move upward, thereby reducing or closing the cold water inlet passage 103. If the amount of cold water flowing in from the cold water inlet channel 103 is still too large, at this time, the pressure in the cold water inlet cavity 203 is greater than the pressure in the sealing cavity 510, the pressure difference between the cold water inlet cavity 203 and the sealing cavity 510 can push the temperature sensing element 300 to move upwards, and because the piston 200 is fixedly connected with the temperature sensing element 300, the piston 200 is pushed upwards, thereby reducing the size of the cold water inlet channel 103, and because the pressure difference exists between the cold water inlet cavity 203 and the sealing cavity 510, the force value required by the working spring 410 for the piston 200 is reduced, so that the load force applied by the temperature sensing element 300 in a stable state is reduced, and the service life of the water outlet temperature adjusting device is prolonged.

Referring to fig. 2, in some embodiments of the present utility model, a temperature-adjusting valve rod 610 is rotatably disposed at an upper end of the valve housing assembly 100, a valve rod sleeve 620 capable of moving up and down relative to the valve housing assembly 100 is threadedly coupled to the temperature-adjusting valve rod 610, a pressing member 630 abutting against an upper end of the temperature sensing element 300 is elastically coupled to the valve rod sleeve 620, and both the junction of the temperature-adjusting valve rod 610 and the valve rod sleeve 620 and the pressing member 630 are disposed in the sealing chamber 510. The portion of the temperature-adjusting valve rod 610 rotating relative to the valve housing assembly 100 is a polish rod portion, the temperature-adjusting valve rod 610 can only rotate relative to the valve housing assembly 100 and cannot move up and down, in order to isolate the external environment and the connection between the temperature-adjusting valve rod 610 and the valve rod sleeve 620, the oxidation corrosion process of the connection between the temperature-adjusting valve rod 610 and the valve rod sleeve 620 is slowed down, and a sealing ring is arranged between the polish rod portion and the valve housing assembly 100.

The temperature-adjusting valve rod 610 is provided with external threads, and accordingly, the valve rod sleeve 620 is provided with an internal threaded hole matched with the external threads of the temperature-adjusting valve rod 610. In the conventional thermostatic valve core, water can enter between the external thread of the temperature-adjusting valve rod 610 and the internal thread hole of the valve rod sleeve 620, after being soaked and flushed by water for a long time, lubricating oil between the temperature-adjusting valve rod 610 and the valve rod sleeve 620 can run off, and scale, sediment and the like can also accumulate between the external thread of the temperature-adjusting valve rod 610 and the internal thread hole of the valve rod sleeve 620, so that the temperature-adjusting valve rod 610 is easy to jam when rotating, and the use experience of a user is affected.

In the above scheme, the waterproof sealing member 500 can wrap the thread structure between the temperature-adjusting valve rod 610 and the valve rod sleeve 620 inside the sealing cavity 510, so that water in the cold water inlet cavity 203 cannot invade the sealing cavity 510, lubricating oil between the temperature-adjusting valve rod 610 and the valve rod sleeve 620 is prevented from losing, the problem that scale and silt are accumulated between the external thread of the temperature-adjusting valve rod 610 and the internal thread hole of the valve rod sleeve 620 is avoided, and the long-term use stability of the water outlet temperature adjusting device is enhanced.

The both ends of the overload spring 420 are respectively abutted against the valve rod sleeve 620 and the pressing member 630, and the overload spring 420 applies a downward force to the push rod at the upper portion of the temperature sensing element 300. When the water outlet temperature needs to be adjusted, the user rotates the temperature-adjusting valve stem 610, and the valve stem sleeve 620 moves upward or downward relative to the valve housing assembly 100, so that the elastic abutment force applied to the push rod of the temperature sensing element 300 by the pressing piece 630 is adjusted, thereby achieving the purpose of water temperature adjustment.

The utility model also discloses a water outlet device, which comprises the water outlet temperature adjusting device in any technical scheme. The water outlet device adopting the water outlet temperature adjusting device can accurately and quickly realize the adjustment of water temperature, and the temperature sensing element 300 receives smaller load, thereby being beneficial to prolonging the service life of the water outlet device.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A water outlet temperature regulating device, characterized by comprising:

a valve housing assembly (100), wherein a cold water inlet (101) and a hot water inlet (102) are arranged on the side wall of the valve housing assembly (100) at intervals along the up-down direction;

the piston (200) is arranged in the valve housing assembly (100) in a sliding manner, a cold water inlet channel (103) communicated with the cold water inlet (101) is defined between the upper end of the piston (200) and the valve housing assembly (100), and a hot water inlet channel (104) communicated with the hot water inlet (102) is defined between the lower end of the piston (200) and the valve housing assembly (100);

a temperature sensing element (300) connected with the piston (200) and capable of driving the piston (200) to slide so as to adjust the sizes of the cold water inlet channel (103) and the hot water inlet channel (104);

wherein, be equipped with between the upper portion of the outer peripheral wall of piston (200) and the interior peripheral wall of valve casing subassembly (100) intercommunication first balance chamber (201) of cold water inlet (101), be equipped with between the lower part of the outer peripheral wall of piston (200) and the interior peripheral wall of valve casing subassembly (100) intercommunication second balance chamber (202) of hot water inlet (102).

2. The outlet water temperature adjusting device according to claim 1, wherein:

an annular sealing element (210) abutted against the inner peripheral wall of the valve housing assembly (100) is arranged in the middle of the outer peripheral wall of the piston (200), a first annular protruding part (220) is arranged at the upper end of the piston (200) along the outer peripheral wall of the piston, a second annular protruding part (230) is arranged at the lower end of the piston (200) along the outer peripheral wall of the piston, a first balance cavity (201) is defined between the first annular protruding part (220) and the inner peripheral wall of the valve housing assembly (100), and a second balance cavity (202) is defined between the second annular protruding part (230), the annular sealing element (210) and the inner peripheral wall of the valve housing assembly (100).

3. The outlet water temperature adjusting device according to claim 2, wherein:

the distance of the first annular convex part (220) protruding from the outer peripheral wall of the piston (200) along the radial direction of the piston (200) is consistent with the distance of the annular sealing element (210) protruding from the outer peripheral wall of the piston (200) along the radial direction of the piston (200), and the distance of the second annular convex part (230) protruding from the outer peripheral wall of the piston (200) along the radial direction of the piston (200) is consistent with the distance of the annular sealing element (210) protruding from the outer peripheral wall of the piston (200) along the radial direction of the piston (200).

4. The outlet water temperature adjusting device according to claim 2, wherein:

when the piston (200) moves to close the cold water inlet channel (103) or the hot water inlet channel (104), the first balance cavity (201) is kept communicated with the cold water inlet (101) and the second balance cavity (202) is kept communicated with the hot water inlet (102).

5. The outlet water temperature adjusting device according to claim 2, wherein:

the outer peripheral wall of the piston (200) is provided with a plurality of guide ribs (240) distributed around the center circumference of the piston (200), and the guide ribs (240) are arranged in an extending manner along the up-down direction so as to be connected with the first annular convex part (220), the annular sealing element (210) and the second annular convex part (230).

6. The outlet water temperature adjusting device according to claim 1, wherein:

the valve housing assembly (100) is cylindrical, and a plurality of cold water inlets (101) and hot water inlets (102) are distributed on the outer peripheral wall of the valve housing assembly (100) around the axial circumference of the valve housing assembly (100).

7. The outlet water temperature adjusting device according to claim 1, wherein:

the utility model discloses a cold water inlet cavity (203) that can communicate between upper portion of piston (200) and valve casing subassembly (100) cold water inlet channel (103), the lower part of piston (200) with have warm water mixing chamber (121) between valve casing subassembly (100), temperature sensing element (300) wear to locate the middle part of piston (200), piston (200) are equipped with a plurality of winds temperature sensing element (300) circumference distribution's water channel (250), water channel (250) will cold water inlet cavity (203) with warm water mixing chamber (121) are linked together.

8. The outlet water temperature adjusting device according to claim 7, wherein:

the hot water mixing cavity (121) is internally provided with a working spring (410) which is abutted to the piston (200) to drive the piston (200) to move upwards, the valve housing assembly (100) is internally provided with an overload spring (420) which is abutted to the upper end of the temperature sensing element (300), the upper part of the temperature sensing element (300) is sleeved with a water-proof sealing piece (500) which is respectively in sealing connection with the temperature sensing element (300) and the valve housing assembly (100), the water-proof sealing piece (500) and the piston (200) define a cold water inlet cavity (203), and a sealing cavity (510) which is positioned above the cold water inlet cavity (203) is defined between the water-proof sealing piece (500) and the valve housing assembly (100).

9. The outlet water temperature adjusting device according to claim 8, wherein:

the upper end rotation of valve casing subassembly (100) is provided with attemperation valve rod (610), attemperation valve rod (610) threaded connection have can be relative valve casing subassembly (100) lift removal's valve rod cover (620), elastic connection on valve rod cover (620) with pressing piece (630) that the upper end of temperature sensing element (300) supported against, attemperation valve rod (610) with the junction of valve rod cover (620) pressing piece (630) all are located in sealed chamber (510).

10. A water outlet device, comprising: the outlet water temperature adjusting apparatus according to any one of claims 1 to 9.

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