A thermostatic valve and faucet

Abstract

The application provides a thermostatic valve core and a keel. The thermostatic valve core comprises a housing piece, a water control piston and a base. The base comprises a sealing water blocking part which is arranged to be able to cut off or communicate a communicating cavity. The thermostatic valve core has a closed state, a first water outlet state and a second water outlet state. The thermostatic valve core has the closed state, and the water outlet can stop water outlet. The closed state expands the use function of the thermostatic valve core.

Description

Technical Field

[0001] This application relates to the field of faucet equipment technology, and more particularly to a thermostatic valve core and a faucet. Background Technology

[0002] A certain model of thermostatic valve core is available as per the instruction manual. Figure 1 As shown, the thermostatic valve core is provided with a first inlet 13 (usually used for cold water), a second inlet 14 (usually used for hot water), an outlet 31, and a rotatable water control piston 2. The outer shell of the thermostatic valve core is provided with a sealing ring 8 for assembly and sealing to the set position.

[0003] Existing thermostatic valve cores also have hot water inlet, cold water inlet, and outlet, enabling the outlet to flow hot water, cold water, and a mixture of hot and cold water. The outer casing of existing thermostatic valve cores also has a sealing ring for sealing in the designated position. These valve cores also feature a rotatable water control piston. Therefore, existing thermostatic valve cores are similar in appearance, inlet / outlet interfaces, and operating handles to existing thermostatic valve cores. If an existing thermostatic valve core malfunctions, it can be directly replaced with a thermostatic valve core.

[0004] However, existing thermostatic valve cores can only select between three water outlet options: hot water, cold water, or a mixture of hot and cold water. They cannot achieve a shut-off function to prevent water from flowing out. Therefore, the functionality of existing thermostatic valve cores is limited. Utility Model Content

[0005] This application provides a thermostatic valve core and a faucet. The base of the thermostatic valve core is provided with a sealing water-blocking part. The sealing water-blocking part can isolate or connect the connecting cavity of the water control piston. When the water control piston moves to the point where the first water inlet is connected to the first connecting hole, the second water inlet is disconnected from the second connecting hole, and the sealing water-blocking part isolates the connecting cavity, the thermostatic valve core of this application has a closing function. At this time, the thermostatic valve core is in a closed state and cannot dispense water, thereby expanding the use function of the thermostatic valve core.

[0006] The specific technical solution of this application embodiment is as follows: A constant temperature valve core, comprising: The outer casing includes a first sidewall that forms an inner cavity of the casing, and the first sidewall is provided with a first water inlet and a second water inlet. A water-controlling piston is provided with a first connecting hole, a second connecting hole, and a connecting cavity communicating with both the first connecting hole and the second connecting hole; at least a portion of the water-controlling piston is movably installed into the inner cavity of the outer casing, so that the first water inlet is connected to or disconnected from the first connecting hole, and the second water inlet is connected to or disconnected from the second connecting hole; and A base is installed on one side of the outer casing and has a water outlet communicating with the communicating cavity. The base includes a sealing water-blocking part, which is configured to either isolate or connect the communicating cavity. The constant temperature valve core has a closed state, a first water outlet state, and a second water outlet state; In the closed state, the water control piston moves to the point where the first water inlet is connected to the first connecting hole, the second water inlet is disconnected from the second connecting hole, and the sealing water-blocking part isolates the connecting cavity; In the first water outlet state, the water control piston moves to the point where the first water inlet is connected to the first connecting hole, the second water inlet is disconnected from the second connecting hole, and the sealing water-blocking part connects the connecting cavity, so that water enters the connecting cavity from the first water inlet and flows out from the water outlet; In the second water outlet state, the water control piston moves to the point where the first water inlet is connected to or disconnected from the first connecting hole, the second water inlet is connected to the second connecting hole, and the sealing water-blocking part connects the connecting cavity, so that water enters the connecting cavity from the second water inlet and flows out from the water outlet, or water enters the connecting cavity from the first water inlet and the second water inlet, mixes, and then flows out from the water outlet.

[0007] A faucet, characterized in that it includes a constant temperature valve core as described in the above embodiments.

[0008] The technical advantages of the constant temperature valve core provided in this application embodiment are as follows: The constant temperature valve core of this application can change the connection or disconnection between the first water inlet and the first connecting hole, the connection or disconnection between the second water inlet and the second connecting hole, and the isolation or connection of the connecting cavity when at least part of the water control piston moves in the inner cavity of the outer shell, thereby forming three working modes: closed state, first water outlet state, and second water outlet state.

[0009] When the thermostatic valve core is in the first outlet state, water can enter the connecting chamber from the first inlet and flow out from the outlet. When the thermostatic valve core is in the second outlet state, water enters the connecting chamber from the second inlet and flows out from the outlet, or water enters the connecting chamber from the first and second inlets, mixes, and then flows out from the outlet. The first and second outlet states of the thermostatic valve core realize the normal water outlet function of the thermostatic valve core.

[0010] When the thermostatic valve core is in the closed state, the sealing and water-blocking part isolates the connecting cavity, preventing water entering the connecting cavity from the first inlet from continuing to flow to the outlet. The second inlet is disconnected from the second connecting hole, and the second inlet itself cannot enter the connecting cavity. Therefore, in the closed state, water entering both the first and second inlets cannot flow out of the outlet. Compared to existing thermostatic valve cores, the thermostatic valve core of this application has a closing function that prevents water from flowing out of the outlet, thereby expanding the functionality of the thermostatic valve core.

[0011] Other features and advantages of this application will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the application. Other advantages of this application can be realized and obtained by means of the solutions described in the description and the accompanying drawings. Attached Figure Description

[0012] The accompanying drawings are used to provide an understanding of the technical solutions of this application and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions of this application.

[0013] Figure 1 This is a schematic diagram of the cross-sectional structure of a thermostatic valve core in the prior art; Figure 2 This is a three-dimensional structural schematic diagram of a constant temperature valve core according to an embodiment of this application; Figure 3 for Figure 2 A schematic diagram of the main structure of a constant temperature valve core; Figure 4 for Figure 3 A schematic diagram of the left-hand structure of a constant-temperature valve core; Figure 5 for Figure 3 A top view of the isothermal valve core; Figure 6 for Figure 3 A schematic diagram of the exploded structure of a constant temperature valve core; Figure 7 This is a schematic cross-sectional view of the constant temperature valve core in the closed state according to an embodiment of this application; Figure 8 This is a schematic cross-sectional view of the constant temperature valve core in the first water outlet state according to an embodiment of this application. Figure 1 ; Figure 9 This is a schematic cross-sectional view of the constant temperature valve core in the first water outlet state according to an embodiment of this application. Figure 2 ; Figure 10 This is a schematic cross-sectional view of the constant temperature valve core in the second water outlet state according to an embodiment of this application. Figure 1 ; Figure 11This is a schematic cross-sectional view of the constant temperature valve core in the second water outlet state according to an embodiment of this application. Figure 2 ; Figure 12 This is a schematic diagram of the structure of a base according to an embodiment of this application; Figure 13 This is a schematic diagram of the structure of a guide slider according to an embodiment of this application; Figure 14 This is a schematic diagram of the piston head according to an embodiment of this application; Figure 15 This is a schematic diagram of the valve stem structure according to an embodiment of this application. Detailed Implementation

[0014] This application describes several embodiments, but these descriptions are exemplary and not restrictive, and it will be apparent to those skilled in the art that many more embodiments and implementations are possible within the scope of the embodiments described herein. The embodiments, features, and elements disclosed in this application can also be combined with any conventional features or elements to form unique inventive solutions.

[0015] Instruction manual attached Figure 1 A schematic diagram of an existing thermostatic valve core is shown. (Instruction manual attached.) Figures 2 to 15 The diagram shown is a structural schematic of the thermostatic valve core provided in this application embodiment. The thermostatic valve core of this application is similar in appearance, inlet / outlet water interfaces, and operating knob to existing thermostatic valve cores. The thermostatic valve core of this application and existing thermostatic valve cores can be interchanged and sealed together in the set position. Compared to existing thermostatic valve cores, the thermostatic valve core of this application also has a shut-off function. For example... Figures 2 to 12 As shown in the figure, this application discloses a constant temperature valve core, including a housing 1, a water control piston 2, and a base 3. As... Figure 7 The outer casing 1 shown includes a first sidewall 11, which forms an inner cavity 12. The first sidewall 11 is provided with a first water inlet 13 and a second water inlet 14. Figure 7 As shown, the water control piston 2 is provided with a first connecting hole 21, a second connecting hole 22, and a connecting cavity 23 that communicates with both the first connecting hole 21 and the second connecting hole 22. Figures 7 to 11 As shown, at least part of the water control piston 2 is movably installed into the inner cavity 12 of the housing, so that the first water inlet 13 is connected or disconnected from the first connecting hole 21, and the second water inlet 14 is connected or disconnected from the second connecting hole 22. Figure 7 and Figure 12 As shown, the base 3 is installed on one side of the outer casing 1 and has a water outlet 31 that communicates with the connecting cavity 23. The base 3 includes a sealing water-blocking part 32, which is configured to either isolate or connect the connecting cavity 23.

[0016] The constant temperature valve core has a closed state, a first water outlet state, and a second water outlet state.

[0017] like Figure 7 As shown, in the closed state, the water control piston 2 moves to the point where the first water inlet 13 connects with the first connecting hole 21, the second water inlet 14 disconnects from the second connecting hole 22, and the sealing water blocking part 32 isolates the connecting cavity 23.

[0018] like Figure 8 and Figure 9 As shown, in the first water outlet state, the water control piston 2 moves to the point where the first water inlet 13 is connected to the first connecting hole 21, the second water inlet 14 is disconnected from the second connecting hole 22, and the sealing water blocking part 32 connects the connecting cavity 23, so that water enters the connecting cavity 23 from the first water inlet 13 and flows out from the water outlet 31.

[0019] like Figure 10 and Figure 11 As shown, in the second water outlet state, the water control piston 2 moves to the point where the first water inlet 13 is connected to or disconnected from the first connecting hole 21, the second water inlet 14 is connected to the second connecting hole 22, and the sealing water blocking part 32 connects the connecting cavity 23, so that water enters the connecting cavity 23 from the second water inlet 14 and flows out from the water outlet 31, or water enters the connecting cavity 23 from the first water inlet 13 and the second water inlet 14, mixes, and then flows out from the water outlet 31.

[0020] Specifically, in the constant temperature valve core of this application, the first side wall 11 of the outer casing 1 is provided with a first water inlet 13 and a second water inlet 14. At least a portion of the water control piston 2 is movably installed into the inner cavity 12 of the outer casing. The water control piston 2 is provided with a first connecting hole 21 and a second connecting hole 22. The base 3 is provided with a sealing water-blocking part 32, which can isolate or connect the connecting cavity 23. The water control piston 2 is provided with a connecting cavity 23 that is connected to the water outlet 31, the first connecting hole 21 and the second connecting hole 22. When at least a portion of the water control piston 2 moves in the inner cavity 12 of the outer casing, it can change the connection or disconnection between the first water inlet 13 and the first connecting hole 21, the connection or disconnection between the second water inlet 14 and the second connecting hole 22, and the isolation or connection of the connecting cavity 23, thereby forming three working modes: closed state, first water outlet state and second water outlet state.

[0021] When the constant temperature valve core is in the first water outlet state, water can enter the connecting cavity 23 from the first inlet 13 and flow out from the outlet 31. When the constant temperature valve core is in the second water outlet state, water enters the connecting cavity 23 from the second inlet 14 and flows out from the outlet 31, or water enters the connecting cavity 23 from the first inlet 13 and the second inlet 14, mixes, and then flows out from the outlet 31.

[0022] When the thermostatic valve core is in the closed state, the sealing and water-blocking part 32 isolates the connecting cavity 23, preventing water entering the connecting cavity 23 from the first inlet 13 from continuing to flow to the outlet 31. The second inlet 14 is disconnected from the second connecting hole 22, and the second inlet 14 itself cannot allow water to enter the connecting cavity 23. Therefore, in the closed state, water entering both the first inlet 13 and the second inlet 14 cannot flow out of the outlet 31. Compared to existing thermostatic valve cores, the thermostatic valve core of this application has a closing function that prevents water from flowing out of the outlet 31, thereby expanding the functionality of the thermostatic valve core of this application.

[0023] The first inlet 13 can be used for cold water or low-temperature water, and the second inlet 14 can be used for hot water or high-temperature water. Thus, the inlet and outlet interfaces of the constant-temperature valve core of this application are... Figure 1 The inlet and outlet interfaces of the existing thermostatic valve core are similar. The thermostatic valve core of this application can be directly interchanged with the existing thermostatic valve core and installed in the set position. At this time, the thermostatic valve core of this application outputs cold water from outlet 31 in the first water output state, and hot water or a mixture of hot and cold water from outlet 31 in the second water output state.

[0024] It is understandable that hot water can enter through the first inlet 13 and cold water can enter through the second inlet, both of which are within the scope of protection of this application.

[0025] In one exemplary embodiment, such as Figures 7 to 11 As shown, the first sidewall 11 has a first opening 15 and a second opening 16 at both axial ends, and the first sidewall 11 has a first water inlet 13 and a second water inlet 14 spaced apart in sequence along the direction from the first opening 15 to the second opening 16.

[0026] The water control piston 2 includes a piston head 24, which is located in the inner cavity 12 of the outer casing and can move axially along the outer casing 1, such as... Figure 14 As shown, the piston head 24 includes a second sidewall 241. The second sidewall 241 is provided with a first connecting hole 21 and a second connecting hole 22 at intervals along the direction from the first opening 15 to the second opening 16. The connecting cavity 23 is provided in the piston head 24, and the opening of the connecting cavity 23 faces the second opening 16.

[0027] The portion of the second sidewall 241 located between the first connecting hole 21 and the second connecting hole 22 includes a first stop portion 242; a sealing water-blocking portion 32 is located in the connecting cavity 23, and the piston head 24 is configured to move axially along the outer casing 1 so that the sealing water-blocking portion 32 abuts against or is displaced from the first stop portion 242, thereby isolating or connecting the connecting cavity 23.

[0028] Specifically, by designing both the first sidewall 11 and the second sidewall 241 into a cylindrical shape, with the first sidewall 11 fitted over the second sidewall 241, a first water outlet state and a second water outlet state can be achieved. This simplifies the structural design of components such as the piston head 24 and the outer casing 1, and facilitates constraining the piston head 24 to move axially along the outer casing 1 to achieve switching between different water outlet states. The sealing and water-blocking part 32 abutting against or misaligning with the first stop part 242 allows the communicating cavity 23 to be isolated or connected, thus simplifying the structural design of the communicating cavity 23 and the sealing and water-blocking part 32.

[0029] In one exemplary embodiment, such as Figures 7 to 11 , Figure 14 As shown, the portion of the second sidewall 241 located on the side of the first connecting hole 21 near the first opening 15 is the second stop portion 243; the portion of the second sidewall 241 located on the side of the second connecting hole 22 near the second opening 16 is the third stop portion 244.

[0030] In the off state, such as Figure 7 As shown, the piston head 24 moves to the first position so that the first water inlet 13 communicates with the first connecting hole 21, the second water inlet 14 is blocked by the third stop part 244, and the sealing water blocking part 32 and the side wall surfaces of the first stop part 242 abut and seal to isolate the connecting cavity 23.

[0031] In the first water outlet state, such as Figure 8 and Figure 9 As shown, piston head 24 moves freely. Figure 7 The first position shown is moved toward the side where the first opening 15 is located. Figure 8 and Figure 9 The second position shown allows the sealing water-blocking part 32 and the first stop part 242 to be misaligned and separated, so that the connecting cavity 23 is connected. A part of the first water inlet 13 is connected to the first connecting hole 21, and the other part of the first water inlet 13 is blocked by the first stop part 242. The second water inlet 14 is blocked by the third stop part 244.

[0032] In the second water outlet state, such as Figure 10 and Figure 11 As shown, piston head 24 self Figure 7 The first position shown is moved toward the side where the second opening 16 is located. Figure 10 and Figure 11 The third position shown allows the sealing water-blocking part 32 and the first stop part 242 to be misaligned and separated, thus connecting the cavity 23; a part of the first water inlet 13 is connected to the first connecting hole 21, and another part of the first water inlet 13 is blocked and sealed by the second stop part 243, or the first water inlet 13 is blocked by the second stop part 243; the second water inlet 14 is connected to the second connecting hole 22.

[0033] Specifically, in the closed state, the piston head 24 moves to the position shown in the diagram. Figure 7 In the first position shown, the sidewalls of the sealing water-blocking part 32 and the first stop part 242 abut against each other in a sealing fit, thus isolating the communicating cavity 23. At this time, water enters the communicating cavity 23 from the first inlet 13 and stays in the... Figure 7 The upper part of the sealing water-blocking part 32 shown cannot continue to flow towards the outlet 31; after water enters from the second inlet 14, it is blocked by the third stop part 244 and cannot flow into the connecting cavity 23. Therefore, in the closed state, no water flows out of the outlet 31.

[0034] In the first water outlet state, such as Figure 8 and Figure 9 As shown, the piston head 24 drives the first stop 242, the second stop 243, and the third stop 244 to move towards the side closer to the first opening 15. Figure 9 (Move upwards in the middle) Figure 9 The image shows the furthest upward movement of the piston head 24, where the sealing water-blocking part 32 and the first stop part 242 are misaligned and separated. The first stop part 242 is located on the side of the sealing water-blocking part 32 closer to the first opening 15, thus connecting the communicating cavity 23. At this time, the first water inlet 13 is connected to the first communicating hole 21, and water enters the communicating cavity 23 from the first water inlet 13, and then continues to flow through the gap between the sealing water-blocking part 32 and the first stop part 242. Figure 8 or Figure 9 As shown, the water flows downwards and finally flows out from the outlet 31; after entering from the second inlet 14, the water is blocked by the third stop 244 and cannot enter the connecting cavity 23. Therefore, in the first water outlet state, the constant temperature valve core of this application allows water to enter the connecting cavity 23 from the first inlet 13 and then flow out from the outlet 31.

[0035] In the second water outlet state, such as Figure 10 and Figure 11 As shown, the piston head 24 drives the first stop 242, the second stop 243, and the third stop 244 to move towards the side closer to the second opening 16. Figure 10 (moving downwards in the middle) Figure 11 The image shows the piston head 24 moving downwards to its furthest position, causing the sealing water-blocking part 32 and the first stop part 242 to separate and become misaligned. The first stop part 242 is located on the side of the sealing water-blocking part 32 closer to the second opening 16, thus connecting the communicating cavity 23. At this time, the second stop part 243 gradually changes from partially blocking the first water inlet 13 to completely blocking the first water inlet 13. Therefore, the first water inlet 13 and the first communicating hole 21 gradually change from a connected state to a disconnected state, while the second water inlet 14 and the second communicating hole 22 remain connected. Figure 10In the middle, water enters the communicating cavity 23 from the first inlet 13, and then continues to flow through the gap between the sealing water-blocking part 32 and the first stop part 242. Figure 10 As shown, the water flows downwards and finally flows out from the outlet 31; water enters the connecting cavity 23 from the second inlet 14 and then flows out through the outlet 31; that is... Figure 10 The two water streams entering the connecting cavity 23 from the first inlet 13 and the second inlet 14 mix in the connecting cavity 23 and then flow out from the outlet 31. Figure 11 In the middle, water enters from the first inlet 13 and is blocked by the second stop 243, thus preventing it from entering the connecting cavity 23. Water enters the connecting cavity 23 from the second inlet 14 and flows out from the outlet 31.

[0036] If cold water enters through the first inlet 13 and hot water enters through the second inlet 14, then in the first water outlet state, only cold water will flow from the outlet 31. In the second water outlet state, the outlet 31 will gradually change from flowing a mixture of cold and hot water to flowing only hot water.

[0037] In one exemplary embodiment, such as Figures 7 to 12 As shown, the base 3 includes a water guide stop 33 and a connecting part 34 that connects to the radially outer end of the water guide stop 33. The connecting part 34 is connected to one end of the second opening 16 of the outer casing 1, and the end of the water guide stop 33 away from the second opening 16 extends into the inner cavity 12 of the outer casing.

[0038] The end of the water guide stop 33 away from the second opening 16 is provided with a sealing water blocking part 32, and the water guide stop 33 is provided with a water outlet 31.

[0039] Specifically, the connecting part 34 is connected to one end of the second opening 16 of the outer casing 1, and the end of the water guide stop part 33 away from the second opening 16 extends into the inner cavity 12 of the outer casing. Thus, the surface of the water guide stop part 33 facing the first opening 15, the inner wall surface of the second side wall 241, and the part of the piston head 24 near the first opening 15 enclose the communicating cavity 23. The water outlet 31 on the water guide stop part 33 communicates with the communicating cavity 23 for the water outlet of the constant temperature valve core of this application.

[0040] In one exemplary embodiment, such as Figure 6 and Figure 7 As shown, the water control piston 2 also includes a piston rod 25, which includes a first end 251 facing the second opening 16. The first end 251 is located inside the inner cavity 12 of the outer casing, and the first end 251 is sealed to the end of the piston head 24 facing the first opening 15.

[0041] The outer wall of the second stop 243 is sealed to the inner wall of the outer casing 1.

[0042] Specifically, in the existing thermostatic valve core, water entering from the first inlet 13 and / or the second inlet 14 may leak into the gap between the piston rod and the outer casing, causing the piston rod to be submerged in water. If the water quality is poor or scale builds up in the thermostatic valve core after prolonged use, it can easily lead to the piston rod getting stuck or unable to rotate to release water.

[0043] In the constant temperature valve core of this application, the first end 251 of the piston rod 25 is sealed to the end of the piston head 24 facing the first opening 15, and the outer side wall of the second stop portion 243 of the piston head 24 is sealed to the inner side wall of the outer casing 1. This prevents water entering the communicating cavity 23 from the first inlet 13 and / or the second inlet 14 from leaking into the gap between the piston rod 15 and the outer casing 1. The constant temperature valve core of this application avoids the problem of the piston rod 25 becoming scaled and stuck due to prolonged immersion in water, thus preventing adjustment. The constant temperature valve core of this application also ensures that the piston rod operation remains smooth at all times.

[0044] In one exemplary embodiment, such as Figures 7 to 11 As shown, the piston rod 25 includes a valve rod 252 and a guide slider 253. The guide slider 253 is installed at one end of the valve rod 252 near the piston head 24. The valve rod 252 is threadedly connected to the guide slider 253, and the guide slider 253 is connected to the piston head 24.

[0045] like Figure 13 The guide slider 253 shown has a guide portion 2531 on its outer side wall and a guide mating portion 17 on its inner side wall. The guide portion 2531 and the guide mating portion 17 cooperate to limit the movement so that the guide slider 253 can drive the piston head 24 to slide along the axial direction of the outer shell 1 when the valve stem 252 rotates.

[0046] Specifically, the valve stem 252 is threadedly connected to the guide slider 253. The guide portion 2531 of the guide slider 253 is engaged with the guide mating portion 17 of the outer casing 1 to limit the movement of the guide slider 253, so that the guide slider 253 can only slide along the axial direction of the outer casing 1. In this way, when the operator rotates the valve stem 252, the rotational movement of the valve stem 252 can be converted into the movement of the guide slider 253 along the axial direction of the outer casing 1, thereby driving the piston head 24 to move along the axial direction of the outer casing 1, so as to realize the switching of different water outlet states.

[0047] For example, by rotating the patterned handle of the valve stem 252 protruding from the outer casing 1, the operator can switch between different water outlet states, which makes it easier for the operator to use the constant temperature valve core.

[0048] In one exemplary embodiment, such as Figures 6 to 11 As shown, the constant temperature valve core of this application also includes a limiting snap-fit ​​component 4, which snaps onto the side wall of the valve stem 252 to limit the axial movement of the valve stem 252.

[0049] Specifically, the limiting latch 4 restricts the axial movement of the valve stem 252, so the valve stem 252 cannot move along the axial direction of the housing 1. The valve stem 252 can only rotate, and the rotation of the valve stem 252 is converted into the movement of the piston head 24 along the axial direction of the housing 1 by the guide slider 253.

[0050] In one exemplary embodiment, such as Figure 7 and Figure 15 As shown, the piston rod 25 also includes a second end 254 that is away from the second opening 16. The second end 254 extends to the outside of the inner cavity 12 of the housing. The side wall of the second end 254 is provided with an annular groove 2541. The limiting snap-fit ​​member 4 is a snap ring. The snap ring snaps into the annular groove 2541 and abuts against the outer wall of the housing member 1.

[0051] Specifically, Figure 7 As shown in the structural diagram, in the constant temperature valve core of this application, a retaining ring is engaged with the annular groove 2541 of the second end 254 and abuts against the outer wall surface of the housing 1. In this way, the retaining ring can restrict the axial movement of the valve stem 252, so that the valve stem 252 can only perform rotational movement. The second end 254 extends to the outside of the inner cavity 12 of the housing, which facilitates the operator to install and remove the retaining ring.

[0052] In one exemplary embodiment, such as Figure 7 , Figure 13 and Figure 15 As shown, the guide slider 253 has a cavity 2532 on the end face facing the first opening 15, the side wall of the cavity 2532 has an internal thread, and the outer side wall of the valve stem 252 facing the second opening 16 has an external thread.

[0053] The outer wall of the guide slider 253 and the inner wall of the outer shell 1 are both provided with corresponding polygonal structures, which extend along the axial direction of the outer shell 1.

[0054] Specifically, the valve stem 252 is inserted into the cavity 2532 of the guide slider 253, which shortens the axial dimension of the constant temperature valve core of this application. Both the outer wall of the guide slider 253 and the inner wall of the outer casing 1 are provided with corresponding polygonal structures, which extend along the axial direction of the outer casing 1, allowing the guide slider 253 to slide only along the axial direction of the outer casing 1. It is understood that the outer wall of the guide slider 253 and the inner wall of the outer casing 1 can also be provided with guide grooves and sliders, all of which are within the protection scope of this application.

[0055] In one exemplary embodiment, such as Figure 6 , Figure 7 and Figure 8As shown, the piston head 24 is provided with a countersunk hole 244, and the end of the guide slider 253 facing the piston head 24 is provided with a through hole. The fastener 5 passes through the countersunk hole 244 and the through hole to connect the piston head 24 and the guide slider 253. A sealing gasket 6 is provided between the fastener 5 and the piston head 24.

[0056] Specifically, a sealing gasket 6 is provided between the fastener 5 and the piston head 24 to ensure that the piston head 24 and the first end 251 of the piston rod 25 are sealed together, preventing water from the communicating cavity 23 from leaking into the gap between the piston rod 25 and the outer casing 1.

[0057] In one exemplary embodiment, such as Figures 6 to 11 As shown, the constant temperature valve core also includes an outer sleeve 7. The outer sleeve 7 is located between the first side wall 11 and the piston head 24 along the radial direction of the outer casing 1. The outer sleeve 7 includes a third side wall 71. The third side wall 71 is provided with a first water passage hole 72 and a second water passage hole 73 at intervals along the axial direction of the outer casing 1. The first water passage hole 72 is correspondingly provided and connected to the first water inlet 13, and the second water passage hole 73 is correspondingly provided and connected to the second water inlet 14.

[0058] The outer side wall of the outer sleeve 7 is sealed to the inner side wall of the first side wall 11, and the inner side wall of the outer sleeve 7 is sealed to the outer side wall of the piston head 24.

[0059] Specifically, an outer sleeve 7 is provided between the first sidewall 11 and the piston head 24. The function of the outer sleeve 7 is to improve the sealing connection between the first sidewall 11 and the second sidewall 241. Optionally, both the outer sleeve 7 and the piston head 24 are made of ceramic material. The surfaces of the second sidewall 241 and the third sidewall 71 can be machined to be relatively smooth, so that the seal between the second sidewall 241 and the third sidewall 71 is watertight. The outer sleeve 7 is fixedly connected to the outer casing 1. A sealing ring 8 can be easily installed on the outer wall surface of the third sidewall 71 of the outer sleeve 7 to ensure a sealing connection between the third sidewall 71 and the first sidewall 11. In this way, the constant temperature valve core of this application is not prone to water leakage, and water is not prone to seeping into the gap between the piston rod 25 and the outer casing 1.

[0060] In one exemplary embodiment, such as Figures 7 to 11 As shown, along the axial direction of the outer casing 1, a plurality of sealing rings 8 are provided between the outer side wall of the third side wall 71 and the inner side wall of the first side wall 11.

[0061] In one exemplary embodiment, such as Figures 6 to 11 As shown, the outer casing 1 includes a first outer casing 18 and a second outer casing 19. The first outer casing 18 has a first opening 15 at one end, and the second outer casing 19 has a second opening 16 at one end. The first water inlet 13 and the second water inlet 14 are both located on the second outer casing 19.

[0062] The end of the first outer casing 18 facing away from the first opening 15 is connected to the end of the second outer casing 19 facing away from the second opening 16; the base 3 is connected to the end of the second outer casing 19 that has the second opening 16.

[0063] The outer walls of the first outer casing 18, the second outer casing 19, and the base 3 are all provided with grooves, and sealing rings 8 are provided in the grooves.

[0064] Specifically, the outer casing 1 is formed by connecting a first outer casing 18 and a second outer casing 19, which facilitates the assembly of the constant temperature valve core and the manufacturing of the outer casing 1. Grooves are provided on the outer walls of the first outer casing 18, the second outer casing 19, and the base 3, and sealing rings 8 are provided within these grooves. Thus, the outer casing of the constant temperature valve core of this application is similar in appearance to that of existing thermostatic valve cores, both having sealing rings 8. The constant temperature valve core of this application and existing thermostatic valve cores are interchangeable and can be sealed and installed in the designated position.

[0065] In one exemplary embodiment, such as Figure 2 As shown, the first sidewall 11 of the outer casing 1 has a plurality of first water inlets 13 and second water inlets 14 evenly distributed along the circumferential direction; as Figure 14 As shown, the second sidewall 241 of the piston head 24 has a plurality of first connecting holes 21 and second connecting holes 22 evenly distributed along the circumferential direction.

[0066] Specifically, multiple first inlets 13 and second inlets 14, multiple first connecting holes 21 and second connecting holes 22 are provided along the circumferential direction of the thermostatic valve core. This allows water to be delivered to the connecting cavity 23 from multiple circumferential directions of the thermostatic valve core, thereby increasing the water delivery capacity and expanding the water delivery direction of the thermostatic valve core of this application.

[0067] In one exemplary embodiment, such as Figure 12 As shown, a plurality of water outlets 31 are evenly distributed along the circumferential direction of the water guide stop portion 33, and the water outlets 31 extend along the axial direction of the outer casing 1.

[0068] Specifically, multiple water outlets 31 are evenly distributed along the circumferential direction of the water guide stop 33. This can increase the water output of the constant temperature valve core of this application and make the water flowing out of the water outlet 31 in a balanced and stable direction, so that it is not easy to deviate.

[0069] This application provides a faucet, including a constant temperature valve core as described in any of the exemplary embodiments above.

[0070] Specifically, the faucet in this application embodiment includes a constant temperature valve core as described in any of the exemplary embodiments above, and therefore has the structural features and advantages of the constant temperature valve core described in any of the exemplary embodiments above, which will not be repeated here.

[0071] Optionally, the faucet specifically includes a shower faucet and a basin faucet. That is, the thermostatic valve core of this application can be used as a shower faucet on a shower or as a basin faucet on a basin, both of which are within the protection scope of this application.

[0072] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0073] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0074] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0075] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0076] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0077] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A constant temperature valve core, characterized in that, include: The outer casing includes a first sidewall that forms an inner cavity of the casing, and the first sidewall is provided with a first water inlet and a second water inlet. A water control piston is provided with a first connecting hole, a second connecting hole, and a connecting cavity that communicates with both the first connecting hole and the second connecting hole; at least a portion of the water control piston is movably installed into the inner cavity of the outer shell, so that the first water inlet is connected to or disconnected from the first connecting hole, and the second water inlet is connected to or disconnected from the second connecting hole; and A base is installed on one side of the outer casing and has a water outlet communicating with the communicating cavity. The base includes a sealing water-blocking part, which is configured to either isolate or connect the communicating cavity. The constant temperature valve core has a closed state, a first water outlet state, and a second water outlet state; In the closed state, the water control piston moves to the point where the first water inlet is connected to the first connecting hole, the second water inlet is disconnected from the second connecting hole, and the sealing water-blocking part isolates the connecting cavity; In the first water outlet state, the water control piston moves to the point where the first water inlet is connected to the first connecting hole, the second water inlet is disconnected from the second connecting hole, and the sealing water-blocking part connects the connecting cavity, so that water enters the connecting cavity from the first water inlet and flows out from the water outlet; In the second water outlet state, the water control piston moves to the point where the first water inlet is connected to or disconnected from the first connecting hole, the second water inlet is connected to the second connecting hole, and the sealing water-blocking part connects the connecting cavity, so that water enters the connecting cavity from the second water inlet and flows out from the water outlet, or water enters the connecting cavity from the first water inlet and the second water inlet, mixes, and then flows out from the water outlet.

2. The constant temperature valve core according to claim 1, characterized in that, The first sidewall has a first opening and a second opening at both axial ends, and the first water inlet and the second water inlet are sequentially spaced apart along the direction from the first opening to the second opening on the first sidewall. The water control piston includes a piston head, which is located in the inner cavity of the outer shell and can move along the axial direction of the outer shell. The piston head includes a second sidewall, on which the first connecting hole and the second connecting hole are sequentially spaced along a direction from the first opening to the second opening. The connecting cavity is located in the piston head, and the opening of the connecting cavity faces the second opening. The portion of the second sidewall located between the first connecting hole and the second connecting hole includes a first stop portion; the sealing water-blocking portion is located in the connecting cavity, and the piston head is configured to move axially along the outer casing to allow the sealing water-blocking portion to abut against or be misaligned with the first stop portion, thereby isolating or connecting the connecting cavity.

3. The constant temperature valve core according to claim 2, characterized in that, The portion of the second sidewall located near the first opening of the first connecting hole is a second stop portion; the portion of the second sidewall located near the second opening of the second connecting hole is a third stop portion. In the closed state, the piston head moves to the first position so that the first water inlet communicates with the first connecting hole, the second water inlet is blocked by the third stop, and the side wall surfaces of the sealing water-blocking part and the first stop are in a sealing fit to isolate the connecting cavity. In the first water outlet state, the piston head moves from the first position toward the side where the first opening is located to the second position, so that the sealing water-blocking part and the first stop part are misaligned and separated, and the communicating cavity is connected. A part of the first water inlet is connected to the first communicating hole, and the other part of the first water inlet is blocked by the first stop part. The second water inlet is blocked by the third stop part. In the second water outlet state, the piston head moves from the first position toward the side where the second opening is located to the third position, so that the sealing water-blocking part and the first stop part are misaligned and separated, and the communicating cavity is connected; a part of the first water inlet is connected to the first communicating hole, and the other part of the first water inlet is blocked and sealed by the second stop part, or the first water inlet is blocked by the second stop part. The second water inlet is connected to the second connecting hole.

4. The constant temperature valve core according to claim 3, characterized in that, The base includes a water-guiding stop and a connecting part that connects to the radially outer end of the water-guiding stop. The connecting part is connected to one end of the second opening of the housing, and the end of the water-guiding stop away from the second opening extends into the inner cavity of the housing. The water-guiding stop is provided with the sealing water-blocking part at one end away from the second opening, and the water outlet is provided on the water-guiding stop.

5. The constant temperature valve core according to claim 3, characterized in that, The water control piston also includes a piston rod, which includes a first end facing the second opening. The first end is located inside the inner cavity of the outer casing, and the first end is sealed to the end of the piston head facing the first opening. The outer wall of the second stop is sealed to the inner wall of the outer casing.

6. The constant temperature valve core according to claim 5, characterized in that, The piston rod includes a valve rod and a guide slider. The guide slider is installed at one end of the valve rod near the piston head. The valve rod is threadedly connected to the guide slider, and the guide slider is connected to the piston head. The outer wall of the guide slider is provided with a guide portion, and the inner wall of the outer casing is provided with a guide mating portion. The guide portion and the guide mating portion cooperate to limit the movement, so that the guide slider can drive the piston head to slide along the axial direction of the outer casing when the valve stem rotates.

7. The constant temperature valve core according to claim 6, characterized in that, It also includes a limiting snap-fit ​​component, which snaps onto the side wall of the valve stem to restrict the axial movement of the valve stem.

8. The constant temperature valve core according to any one of claims 2 to 7, characterized in that, The constant temperature valve core also includes an outer sleeve, which is located between the first side wall and the piston head along the radial direction of the outer shell. The outer sleeve includes a third side wall, which is provided with a first water passage hole and a second water passage hole at intervals along the axial direction of the outer shell. The first water passage hole is correspondingly arranged and connected to the first water inlet, and the second water passage hole is correspondingly arranged and connected to the second water inlet. The outer side wall of the outer kit is sealed to the inner side wall of the first side wall, and the inner side wall of the outer kit is sealed to the outer side wall of the piston head.

9. The constant temperature valve core according to any one of claims 2 to 7, characterized in that, The outer casing includes a first outer casing and a second outer casing. The first outer casing has a first opening at one end, and the second outer casing has a second opening at one end. Both the first water inlet and the second water inlet are located on the second outer casing. The end of the first outer casing that is away from the first opening is connected to the end of the second outer casing that is away from the second opening; the base is connected to the end of the second outer casing that has the second opening. The outer wall surfaces of the first outer casing, the second outer casing, and the base are all provided with grooves, and sealing rings are provided in the grooves.

10. A faucet, characterized in that, Includes a constant temperature valve core as described in any one of claims 1 to 9.

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