Valve element assembly, water mixing valve and water heater

Abstract

The utility model belongs to the technical field of valves, and particularly discloses a valve element assembly, a water mixing valve and a water heater. The valve element assembly comprises a valve sleeve, a first sealing piece and a valve element piece. A hot water inlet and a cold water inlet are formed in the valve sleeve in the axial direction in a spaced mode and arranged in the circumferential direction of the valve sleeve in a spaced mode. The first sealing piece sleeves the outer side of the valve sleeve and is positioned between the cold water inlet and the hot water inlet; the valve core part is rotationally mounted in the mounting cavity and is provided with a water mixing cavity with an opening in one end, and a water through hole is formed in the cavity wall of the water mixing cavity; the end, away from the opening of the water mixing cavity, of the valve element piece extends out of the valve sleeve and is connected with the valve element driving piece so that the valve element driving piece can drive the valve element piece to be rotationally switched among the cold water conduction position, the mixed conduction position and the hot water conduction position. According to the valve element assembly, the water mixing valve and the water heater, the precision of water temperature control and adjustment can be improved, and the use experience of the water mixing valve and the water heater is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a valve core component, a water mixing valve and a water heater. Background Art

[0002] A mixing valve is a valve structure commonly used on water heaters. It usually plays the role of regulating and maintaining a constant outlet water temperature. Mixing valves are usually divided into mechanical mixing valves and electric mixing valves according to different adjustment methods.

[0003] The prior art provides a thermostatic valve, which includes a coaxially arranged valve core and a valve sleeve, wherein a valve core cavity is defined in the valve sleeve, and a cold water inlet hole and a hot water inlet hole connected to the valve core cavity are provided on the peripheral wall of the valve sleeve; the valve core has an adjusting portion, which is constructed as a hollow structure to define a pre-mixing cavity therein, and the adjusting portion is provided with an adjusting hole and a pre-mixing water outlet hole connected to the pre-mixing cavity, and the adjusting portion is rotatably arranged in the valve core cavity to connect the adjusting hole with at least one of the cold water inlet hole and the hot water inlet hole.

[0004] The thermostatic valve provided by the prior art has a cold water inlet hole and a hot water inlet hole spaced apart in the circumferential direction of the valve sleeve, but in the axial direction of the valve sleeve, the cold water inlet hole and the hot water inlet hole are located at the same position. As a result, when the adjustment hole is connected to the cold water inlet hole or one of the hot water inlet holes, water may seep into the water hole from the other cold water inlet hole or the hot water inlet hole, causing water seepage, thereby affecting the adjustment accuracy and reducing the user experience of the mixing valve. Utility Model Content

[0005] One of the technical problems solved by the present invention is to provide a valve core assembly, which can effectively solve the problem of low adjustment accuracy caused by water seepage during adjustment of the valve core assembly on the existing mixing valve, and improve the adjustment accuracy of the valve core assembly.

[0006] The second technical problem solved by the present invention is to provide a water mixing valve, which can effectively solve the problem of low temperature adjustment accuracy of the existing water mixing valve, improve the temperature adjustment accuracy of the water mixing valve, and ensure a constant temperature effect.

[0007] The third technical problem solved by the present invention is to provide a water heater that can effectively solve the problem of reduced user experience of existing water heaters due to low temperature adjustment accuracy of the mixing valve, improve the temperature adjustment reliability of the water heater, and improve the user experience of the mixing valve.

[0008] The first technical problem mentioned above is solved by the following technical solution:

[0009] A valve core assembly is applied to a water mixing valve, and the valve core assembly comprises:

[0010] A valve sleeve having an installation cavity open at both ends, wherein a hot water inlet and a cold water inlet are spaced apart along the axial direction on an outer side wall of the valve sleeve, and the hot water inlet and the cold water inlet are spaced apart along the circumference of the valve sleeve;

[0011] a first sealing member, sleeved on the outside of the valve sleeve and located between the cold water inlet and the hot water inlet;

[0012] A valve core member is rotatably mounted in the mounting cavity and has a water mixing cavity with an open end, wherein a cavity wall of the water mixing cavity is provided with a water through hole;

[0013] One end of the valve core member away from the opening of the mixing water chamber extends out of the valve sleeve and is connected to the valve core driving member, so that the valve core driving member drives the valve core member to rotate and switch between the cold water conduction position, the mixed conduction position and the hot water conduction position. When the valve core member is in the cold water conduction position, only the cold water inlet is connected to the water through hole; when the valve core member is in the mixed conduction position, both the cold water inlet and the hot water inlet are connected to the water through hole; when the valve core member is in the hot water conduction position, only the hot water inlet is connected to the water through hole.

[0014] Compared with the background art, the valve core assembly of the present invention has the following advantages: the temperature of the water in the mixing chamber can be adjusted by the rotation of the valve core member within the valve sleeve, and the requirements of separate cold water and separate hot water discharge can be met, thereby increasing the adjustment range of the water outlet temperature of the mixing chamber and better meeting the water temperature adjustment requirements of the mixing valve; because the cold water inlet and the hot water inlet are arranged axially with a spacing along the valve sleeve, and the first sealing member is sleeved on the outside of the valve sleeve and located between the cold water inlet and the hot water inlet, cold water flowing into the cold water inlet will not flow into the hot water inlet, and hot water flowing into the hot water inlet will not flow into the cold water inlet, thereby ensuring that cold water and hot water do not flow outside the valve core member, thereby ensuring that the amount of cold water entering the mixing chamber is controlled only by the cold water connection opening between the cold water inlet and the water through hole, and the amount of hot water entering the mixing chamber is controlled only by the hot water connection opening between the hot water inlet and the water through hole, thereby improving the control accuracy of the amount of cold and hot water entering the mixing chamber, thereby better ensuring the accuracy of water temperature adjustment by the valve core assembly.

[0015] In one embodiment, the outer interference sleeve of the valve sleeve is provided with a second seal and a third seal, the cold water inlet is located between the second seal and the first seal, and the hot water inlet is located between the first seal and the third seal.

[0016] In one embodiment, the third sealing member is located on a side of the first sealing member away from the opening of the water mixing chamber, and the diameter of the cross-sectional circle of the third sealing member is larger than the diameters of the cross-sectional circles of the first sealing member and the second sealing member;

[0017] Alternatively, the second sealing member is located on a side of the first sealing member away from the opening of the water mixing chamber, and a diameter of a cross-sectional circle of the second sealing member is larger than diameters of the cross-sectional circles of the first sealing member and the second sealing member.

[0018] In one embodiment, the valve core member includes a water mixing jacket and a valve shaft coaxially connected, the water mixing jacket is rotatably mounted in the mounting cavity and has the water mixing chamber and the water through hole, the valve shaft is connected to the blocking end of the water mixing jacket and is located outside the valve jacket, and the outer diameter of the water mixing jacket is larger than the diameter of the valve shaft;

[0019] And / or, the cross section of the water through hole is sector-shaped, and the center of the circle corresponding to the sector is located on the axis of the valve core member.

[0020] In one embodiment, the outer sleeve of the mixing jacket is provided with an inner seal, the inner seal is located between the water through hole and the valve shaft, and the inner seal is squeezed between the outer wall of the mixing jacket and the cavity wall of the installation cavity.

[0021] In one embodiment, the water mixing sleeve includes a sleeve portion and a sealing shaft portion, the sealing shaft portion is coaxially connected between the sleeve portion and the valve shaft, the sleeve portion has the water mixing chamber and the water through hole, the outer diameters of the sleeve portion, the sealing shaft portion and the valve shaft gradually decrease, and the inner seal is sleeved on the sealing shaft portion;

[0022] The installation cavity includes a main cavity portion and a sealing cavity portion that are coaxially connected. The aperture of the sealing cavity portion is smaller than that of the main cavity portion. The sealing shaft portion is installed in the sealing cavity portion, and the sleeve portion is located in the main cavity portion.

[0023] In one embodiment, an indicator mark is provided on the end surface of the valve shaft, and the indicator mark indicates the circumferential position of the valve core member relative to the valve sleeve.

[0024] In one embodiment, the valve sleeve is provided with a positioning boss on the end surface facing the valve shaft, a rotation-stopping plane is cut on the side of the positioning boss, the indicator mark extends along the radial direction of the valve shaft, and when the valve core assembly is in an initial state, the indicator mark is perpendicular to the rotation-stopping plane in a projection plane perpendicular to the axis of the valve shaft;

[0025] And / or, the indicator mark includes an indicator groove formed on the end surface of the valve shaft, and the indicator groove extends along the radial direction of the valve shaft.

[0026] The second technical problem mentioned above is solved by the following technical solution:

[0027] A mixing water valve comprises a valve body, the valve body having a valve core cavity, a cold water channel, a mixed water outlet channel and a hot water inlet channel, the valve core cavity having a cold water connecting port connected to the cold water channel, a mixed water outlet connected to the mixed water outlet channel and a hot water connecting port connected to the hot water inlet channel, the mixing water valve further comprises any one of the above valve core assemblies and a valve core driving member, the valve sleeve is installed in the valve core cavity and the first sealing member is squeezed between the outer wall of the valve sleeve and the inner wall of the valve core cavity, the cold water inlet is directly connected to the cold water connecting port, the hot water inlet is directly connected to the hot water connecting port, and the opening of the mixing water cavity faces the mixed water outlet; the valve core driving member is installed outside the valve body and connected to the valve core member, and the valve core driving member drives the valve core member to rotate.

[0028] Compared with the background technology, the mixing valve described in the present invention has the following beneficial effects: by adopting the above-mentioned valve core assembly, the temperature regulation accuracy of the mixing valve can be improved, the temperature regulation requirements can be better met, and the user experience of the mixing valve can be improved.

[0029] The third technical problem mentioned above is solved by the following technical solution:

[0030] A water heater comprises the water mixing valve described above.

[0031] Compared with the background technology, the water heater described in the present invention has the following beneficial effects: by adopting a mixing valve, the water temperature adjustment accuracy of the water heater can be improved, and the user experience of the water heater can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic structural diagram of a water mixing valve provided in an embodiment of the present utility model;

[0033] Figure 2 A cross-sectional view of a water mixing valve provided in an embodiment of the present utility model;

[0034] Figure 3 A partial structural cross-sectional view of a water mixing valve provided in an embodiment of the utility model;

[0035] Figure 4 for Figure 3 A partial enlarged view of point I in the middle;

[0036] Figure 5 A schematic diagram of the disassembled structure of the hot water connector and valve core mechanism provided in an embodiment of the present utility model;

[0037] Figure 6 This is a schematic structural diagram of the valve core assembly provided by an embodiment of the present utility model at one viewing angle;

[0038] Figure 71 is a structural schematic diagram of the valve core assembly provided by an embodiment of the present utility model from another perspective;

[0039] Figure 8 This is a schematic diagram of the disassembled structure of the valve core assembly provided by an embodiment of the present utility model;

[0040] Figure 9 It is a cross-sectional view of the valve core assembly provided by an embodiment of the present utility model;

[0041] Figure 10 It is a structural schematic diagram of the valve core member provided in an embodiment of the present utility model.

[0042] Description of labels:

[0043] 1. Valve core assembly; 11. Valve sleeve; 111. Water guide sleeve; 1111. Hot water inlet; 1112. Cold water inlet; 1113. Mounting cavity; 112. Sealing sleeve; 1121. Positioning step surface; 113. Positioning boss; 1131. Anti-rotation plane; 114. Sealing ring groove; 12. Valve core; 121. Mixing sleeve; 1211. Sleeve; 1212. Sealing shaft; 1213. Mixing chamber; 1214. Water hole; 1215. Sealing groove; 122. Valve shaft; 1221. Indicator groove; 13. Outer seal; 13a. First seal; 13b. Second seal; 13c. Third seal; 14. Inner seal

[0044] 2. Valve body; 21. Cold water channel; 22. Valve core cavity; 221. Cold water connection port; 222. Hot water connection port; 223. Mixed water outlet; 23. Mixed water outlet channel; 24. Cold water outlet channel; 25. Hot water inlet channel;

[0045] 3. Valve core drive; 4. Flow detection device; 5. Temperature detection device; 6. Mounting plate; 61. Mounting port. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0047] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and 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, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0048] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0049] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0050] This embodiment provides a mixing valve, which can be used in a water heater to adjust the outlet water temperature of the water heater, improve the temperature adjustment accuracy of the mixing valve, and enhance the user experience of the water heater.

[0051] like Figure 1 and Figure 2 As shown, in this embodiment, the mixing water valve includes a valve body 2 and a valve core mechanism. The valve body 2 includes a valve core chamber 22, a cold water channel 21, a mixed water outlet channel 23, a cold water outlet channel 24, and a hot water inlet channel 25. The cold water outlet channel 24 communicates with the cold water channel 21 to provide cold water to the inner tank, and the hot water inlet channel 25 allows hot water to flow out of the inner tank. The valve core chamber 22 includes a cold water connection port 221 communicating with the cold water channel 21, a mixed water outlet 223 communicating with the outlet channel, and a hot water connection port 222 communicating with the hot water inlet channel 25. The valve core mechanism includes a valve core assembly 1 and a valve core driver 3. The valve core assembly 1 is installed in the valve core chamber 22. The valve core driver 3 drives the valve core assembly 1 to adjust the ratio of cold and hot water entering the valve core from the cold water connection port 221 and the hot water connection port 222, thereby adjusting the temperature of the water flowing out of the mixed water outlet channel 23.

[0052] like Figure 3 and Figure 4As shown, the valve core assembly 1 includes a valve sleeve 11, a valve core member 12, and an outer seal 13. The valve sleeve 11 has an installation cavity 1113 open at both ends. A hot water inlet 1111 and a cold water inlet 1112 are axially spaced apart on the outer wall of the valve sleeve 11. The hot water inlet 1111 and the cold water inlet 1112 are spaced apart along the circumference of the valve sleeve 11. The outer seal 13 includes a first seal 13a, which is sleeved on the outer side of the valve sleeve 11 and located between the cold water inlet 1112 and the hot water inlet 1111. The valve core member 12 is rotatably mounted in the installation cavity 1113 and has a water mixing chamber 1213 open at one end. The wall of the water mixing chamber 1213 is provided with a water through hole 1214. The end of the valve core member 12 away from the opening of the water mixing chamber 1213 extends outside the valve sleeve 11 and is connected to the valve core drive member 3.

[0053] The valve core driving member 3 drives the valve core member 12 to rotate and switch between the cold water conduction position, the mixed conduction position and the hot water conduction position; when the valve core member 12 is in the cold water conduction position, only the cold water inlet 1112 is connected to the water through hole 1214; when the valve core member 12 is in the mixed conduction position, both the cold water inlet 1112 and the hot water inlet 1111 are connected to the water through hole 1214; when the valve core member 12 is in the hot water conduction position, only the hot water inlet 1111 is connected to the water through hole 1214.

[0054] The valve sleeve 11 is installed in the valve core cavity 22, and the cold water connecting port 221 is directly connected to the cold water inlet 1112, the hot water inlet 1111 is directly connected to the hot water connecting port 222, the opening of the mixing water cavity 1213 is directly connected to the mixing water outlet 223, and the outer seal 13 is squeezed between the outer wall of the valve sleeve 11 and the inner wall of the valve core cavity 22.

[0055] The valve core assembly 1 and the mixing water valve provided by the present invention, when the valve core member 12 is in the cold water conduction position, only the cold water inlet 1112 is connected with the water through hole 1214, thereby allowing cold water to flow to the mixed water outlet channel 23 through the cold water channel 21, the cold water connecting port 221, the cold water inlet 1112, the water through hole 1214, and the mixing water chamber 1213 in sequence. Since the hot water inlet 1111 is not connected with the water through hole 1214, no hot water is introduced into the mixing water chamber 1213, and the temperature of the water flowing out of the mixed water outlet channel 23 is the temperature of the cold water; when the valve core member 12 is in the hot water conduction position, cold water cannot enter the mixing water chamber 1213 through the water through hole 1214, and hot water flows through the hot water inlet channel 25, the hot water connecting port 222, The hot water inlet 1111 enters the mixing water chamber 1213 and flows to the mixing water outlet channel 23, so that the temperature of the water flowing out of the mixing water outlet channel 23 is the temperature of the hot water flowing out of the inner tank; when the valve core 12 is in the mixing water conduction position, since the water through hole 1214 is connected with both the cold water inlet 1112 and the hot water inlet 1111, both cold water and hot water can enter the mixing water chamber 1213 through the water through hole 1214, thereby achieving the mixing of cold water and hot water. At the same time, by adjusting the opening of the water through hole 1214 connected to the cold water inlet 1112 and the hot water inlet 1111 respectively, the amount of cold water and hot water entering the water through hole 1214 can be adjusted, thereby achieving the adjustment of the ratio of cold and hot water, and then achieving the adjustment of the water temperature in the mixing water chamber 1213.

[0056] That is, the valve core assembly 1 and the mixing valve provided in this embodiment can adjust the temperature of the water in the mixing chamber 1213 by rotating the valve core member 12 in the valve sleeve 11, and can meet the needs of separate cold water and separate hot water, improve the adjustment range of the water outlet temperature of the mixing chamber 1213, and better meet the water temperature adjustment needs of the mixing valve; because the cold water inlet 1112 and the hot water inlet 1111 are arranged at intervals along the axial direction of the valve sleeve 11, and the first sealing member 13a is sleeved on the outside of the valve sleeve 11 and is located between the cold water inlet 1112 and the hot water inlet 1111, the cold water flowing into the cold water inlet 1112 will not escape The hot water flows into the hot water inlet 1111, and the hot water flowing into the hot water inlet 1111 will not flow into the cold water inlet 1112, ensuring that the cold water and hot water will not flow outside the valve core component 12, thereby ensuring that the amount of cold water entering the mixing water chamber 1213 is only controlled by the cold water connection opening between the cold water inlet 1112 and the water through hole 1214, and the amount of hot water entering the mixing water chamber 1213 is only controlled by the hot water connection opening between the hot water inlet 1111 and the water through hole 1214, thereby improving the control accuracy of the amount of cold and hot water entering the mixing water chamber 1213, thereby better ensuring the accuracy of the valve core component 1 in regulating the water temperature.

[0057] It is worth noting that in this embodiment, the valve body 2 includes a detachably connected hot water connector and a hot water connector. The hot water connector is provided with the aforementioned valve core cavity 22, hot water inlet channel 25, and mixed water outlet channel 23. The cold water connector includes a cold water channel 21 and a cold water outlet channel 24. In other embodiments, the valve body 2 may adopt the valve body 2 structure of other existing mixing valves. The specific structure of the valve body 2 is not limited or elaborated in this embodiment.

[0058] In one embodiment, the mixing valve further includes a flow detection device 4, which is mounted on the valve body 2 and is used to detect the flow rate in the mixed water outlet channel 23. The mixing valve further includes a temperature detection device 5, one corresponding to the cold water channel 21 and the mixed water outlet channel 23, to respectively detect the temperature of the cold water and the temperature of the water in the mixed water outlet channel 23. This facilitates controlling the operation of the valve core drive member 3 through temperature and flow detection, thereby controlling the rotation of the valve core member 12 so that the temperature of the water in the mixed water outlet channel 23 reaches the target temperature. The specific structure of the flow detection device 4 and the temperature detection device 5, as well as their installation on the valve core, can be set with reference to the existing technology. This is not the focus of the present invention and will not be limited or elaborated on here.

[0059] like Figure 3-Figure 5 As shown, one side of the valve core cavity 22 away from the mixed water outlet 223 is open to form a mounting socket, and the valve core assembly 1 is inserted into the valve core cavity 22 through the mounting socket to achieve the installation of the valve core assembly 1.

[0060] In one embodiment, the valve core mechanism further includes a mounting plate 6 having a mounting opening 61 formed thereon. One end of the valve sleeve 11, which is remote from the opening of the mixing chamber 1213, is inserted into the mounting opening 61. The mounting plate 6 is detachably mounted on the open end face of the valve core chamber 22, and the valve core driver 3 is detachably mounted on the side of the mounting plate 6 facing away from the valve body 2. The valve shaft 122 passes through the mounting opening 61 and is connected to the valve core driver 3. The provision of the mounting plate 6, with both the valve core assembly 1 and the valve core driver 3 mounted on the mounting plate 6, facilitates the modularization of the valve core mechanism, thereby facilitating the assembly and disassembly of the valve core mechanism from the valve body 2. Simultaneously, one end of the valve sleeve 11 is inserted into the mounting opening 61, facilitating the installation and positioning of the valve core assembly 1 on the mounting plate 6, thereby improving installation accuracy.

[0061] A positioning boss 113 is provided at one end of the valve sleeve 11 away from the open end of the mixing chamber 1213. The valve sleeve 11 has a positioning surface arranged around the positioning boss 113. The positioning boss 113 is inserted into the mounting port 61 and the mounting plate 6 abuts against the positioning surface. The cross section of the positioning boss 113 is a non-circular cross section. The shape of the mounting port 61 is the same as the shape of the positioning boss 113. This can ensure that the valve sleeve 11 will not rotate relative to the mounting plate 6, and further ensure that the valve sleeve 11 will not rotate relative to the valve body 2, thereby ensuring the reliability of the valve core assembly 1.

[0062] Furthermore, a rotation-stopping plane 1131 is cut on the side of the positioning boss 113 so that the cross section of the positioning boss 113 is a D-shaped cross section. Thus, through the cooperation of the positioning boss 113 and the mounting port 61, the valve sleeve 11 and the mounting plate 6 can be positioned circumferentially on the valve sleeve 11, thereby ensuring the installation positioning of the valve sleeve 11 relative to the valve body 2 on the valve sleeve 11 in the circumferential direction, and then ensuring that the cold water inlet 1112 on the valve sleeve 11 is reliably opposite to the cold water connecting port 221 on the valve body 2, and the hot water inlet 1111 on the valve sleeve 11 is opposite to the hot water connecting port 222 on the valve body 2, thereby ensuring the installation accuracy of the valve core assembly 1 in the valve core cavity 22, thereby better ensuring the water temperature regulation accuracy of the valve core assembly 1.

[0063] In order to improve the installation reliability of the valve sleeve 11 in the valve core cavity 22, in one embodiment, the outer wall of the valve sleeve 11 has a positioning step surface 1121, and the positioning step surface 1121 is arranged toward the opening of the mixing water cavity 1213. The cavity wall of the valve core cavity 22 has a limiting step surface, and the limiting step surface is arranged away from the mixing water outlet 223 of the valve core cavity 22. The positioning step surface 1121 abuts against the limiting step surface to realize the installation positioning of the valve sleeve 11 in the valve core cavity 22, limit the depth of the valve sleeve 11 inserted into the valve core cavity 22, and ensure the installation reliability of the valve core assembly 1 in the valve core cavity 22.

[0064] like Figures 4 to 6 As shown, in one embodiment, the opening of the water mixing chamber 1213, the cold water inlet 1112, and the hot water inlet 1111 are sequentially arranged in the axial direction of the valve sleeve 11. In other embodiments, the opening of the water mixing chamber 1213, the hot water inlet 1111, and the water inlet may be spaced apart along the axial direction of the valve sleeve 11.

[0065] In one embodiment, a second seal 13b and a third seal 13c are provided on the outside of the valve sleeve 11 in an interference fit. The first, second, and third seals 13a, 13b, 13c are spaced apart circumferentially around the valve sleeve 11. The cold water inlet 1112 is located between the first and second seals 13a, 13b, and the hot water inlet 1111 is located between the first and third seals 13a, 13c. The second seal 13b prevents cold water from entering the valve core cavity 22 along the gap between the outer wall of the valve sleeve 11 and the inner wall of the valve core cavity 22, further ensuring temperature regulation accuracy. The third seal 13c further prevents hot water from flowing through the gap between the valve sleeve 11 and the cavity wall of the valve core cavity 22 to the valve core driver 3, ensuring operational safety of the valve core driver 3.

[0066] To facilitate installation of the outer seal 13, a sealing ring groove 114 is formed on the outer wall of the valve sleeve 11. The sealing ring groove 114 corresponds to the outer seal 13 in a one-to-one manner. The outer seal 13 is installed in the sealing ring groove 114 and protrudes from the sealing ring groove 114. The provision of the sealing ring groove 114 facilitates the installation and positioning of the outer seal 13 on the valve sleeve 11.

[0067] In one embodiment, the third seal 13c is located between the valve core driver 3 and the first seal 13a. The diameter of the cross-sectional circle of the third seal 13c is larger than the diameters of the cross-sectional circles of the first and second seals 13a, 13b. This enhances the sealing effect of the third seal 13c, effectively preventing water in the valve core chamber 22 from flowing toward the valve core driver 3, and ensuring the safety and reliability of the valve core driver 3. Furthermore, a positioning step surface 1121 is located between the third seal 13c and the hot water inlet 1111.

[0068] It is worth noting that, in other embodiments, the opening of the mixing chamber 1213, the hot water inlet 1111 and the water inlet are arranged at intervals along the axial direction of the valve sleeve 11, and the second sealing member 13b is located on the side of the first sealing member 13a away from the opening of the mixing chamber 1213, and the diameter of the cross-sectional circle of the second sealing member 13b is greater than the diameters of the cross-sectional circles of the first sealing member 13a and the second sealing member 13b.

[0069] In one embodiment, in order to improve the coordination convenience between the valve core member 12, the valve sleeve 11 and the valve core driving member 3, the valve core member 12 includes a water mixing jacket 121 and a valve shaft 122 that are coaxially connected. The water mixing jacket 121 is rotatably installed in the installation cavity 1113 and has a water mixing chamber 1213 and a water through hole 1214; the valve shaft 122 is connected to the blocking end of the water mixing jacket 121 and is located outside the valve sleeve 11. The outer diameter of the water mixing jacket 121 is larger than the diameter of the valve shaft 122, and the valve shaft 122 is connected to the valve core driving member 3.

[0070] In one embodiment, the cross-section of the water hole 1214 is fan-shaped to facilitate more precise adjustment of the cold water connection opening between the water hole 1214 and the cold water inlet 1112, and the hot water connection opening between the water hole 1214 and the hot water inlet 1111, through the rotation of the valve core 12, thereby improving the adjustment accuracy and reducing the difficulty of adjustment. Furthermore, the angle between the two opposing side walls of the water hole 1214 on the circumferential direction of the valve core 12 is 60° to 100°, so as to avoid the problem of the temperature being too low due to a too small angle, and also avoid the problem of the circumferential spacing between the cold water inlet 1112 and the hot water inlet 1111 being increased due to a too large angle.

[0071] To further prevent water from flowing toward the valve core drive member 3, in one embodiment, the valve core assembly 1 further includes an inner seal 14. The inner seal 14 is sleeved on the outside of the water mixing jacket 121 and squeezed between the inner sidewall of the valve sleeve 11 and the outer sidewall of the water mixing jacket 121. The inner seal 14 is located between the water through hole 1214 and the valve shaft 122. The provision of the inner seal 14 can prevent water entering the water through hole 1214 from flowing toward the valve shaft 122 through the gap between the valve core and the inner sidewall of the valve sleeve 11, thereby preventing water from flowing toward the valve core drive member 3.

[0072] In one embodiment, the water mixing sleeve 121 includes a sleeve portion 1211 and a sealing shaft portion 1212. A water mixing chamber 1213 and a water through hole 1214 are provided on the sleeve portion 1211. The sealing shaft portion 1212 is coaxially connected between the sleeve portion 1211 and the valve shaft 122. The outer diameter of the sleeve portion 1211, the diameter of the sealing shaft portion 1212, and the diameter of the valve shaft 122 gradually decrease. The sleeve portion 1211 has the water mixing chamber 1213 and the water through hole 1214, and the inner seal 14 is sleeved on the sealing shaft portion 1212. The mounting chamber 1113 includes a main chamber portion and a sealing chamber portion that are coaxially connected. The aperture of the sealing chamber portion is smaller than that of the main chamber portion. The sealing shaft portion 1212 is mounted on the sealing chamber portion, and the sleeve portion 1211 is located within the main chamber portion.

[0073] This arrangement is conducive to achieving the installation and positioning of the valve core component 12 in the installation cavity 1113 through the step surface between the main cavity portion and the sealing cavity portion, thereby ensuring the assembly accuracy of the valve core component 12 inside the valve sleeve 11; at the same time, this arrangement allows the outer diameter of the valve core component 12 to gradually decrease from the sleeve portion 1211, the sealing shaft portion 1212 and the valve shaft 122, thereby avoiding the problem of poor overall structural stability of the valve core component 12 due to a sudden large change in the outer diameter.

[0074] To better ensure sealing, at least two inner seals 14 are provided axially spaced apart along the valve core 12, achieving at least two levels of sealing. Furthermore, an annular sealing groove 1215 is defined on the outer sidewall of the sealing shaft portion 1212. Each sealing groove 1215 corresponds to each inner seal 14, and the inner seal 14 is mounted in the sealing groove 1215.

[0075] In one embodiment, the valve sleeve 11 includes a coaxially connected water-conducting sleeve 111 and a sealing sleeve 112. The inner cavity of the water-conducting sleeve 111 forms a main cavity, and the inner cavity of the sealing sleeve 112 forms a sealed cavity. The water-conducting sleeve 111 is provided with a cold water inlet 1112 and a hot water inlet 1111. The first sealing member 13a and the second sealing member 13b are both mounted on the water-conducting sleeve 111. The wall thickness of the sealing sleeve 112 is greater than that of the water-conducting sleeve 111, and the third sealing member 13c is sleeved on the outside of the sealing sleeve 112. This avoids the problem of insufficient local structural strength of the valve sleeve 11 due to the excessive groove depth of the sealing ring groove 114 of the third sealing member 13c, thereby ensuring the reliability of the valve sleeve 11.

[0076] Furthermore, the positioning boss 113 is coaxially connected to the end surface of the sealing sleeve 112 . The outer diameter of the positioning boss 113 is smaller than the outer diameter of the sealing sleeve 112 . The end surface of the sealing sleeve 112 forms a positioning surface.

[0077] like Figure 7 and Figure 10 As shown, in one embodiment, an indicator mark is provided on the end surface of the valve shaft 122, indicating the circumferential position of the valve core member 12 relative to the valve sleeve 11. This facilitates the control of the required rotation angle of the valve core member 12 by the valve core driving member 3, thereby improving the rotation control accuracy of the valve core member 12.

[0078] In one embodiment, the indicator mark cooperates with the anti-rotation flat surface 1131 of the positioning boss 113 to indicate the relative circumferential position of the valve sleeve 11 and the valve core member 12. Specifically, the indicator mark extends radially along the valve shaft 122. When the valve core assembly 1 is in its initial state, the indicator mark and the anti-rotation flat surface 1131 are perpendicular in a projection plane perpendicular to the axis of the valve shaft 122. This arrangement can simplify the structure of the valve core assembly 1 and reduce its manufacturing cost.

[0079] In other embodiments, a matching mark may be provided on the valve sleeve 11 , and the relative position of the valve core member 12 relative to the valve sleeve 11 in the circumferential direction may be indicated by the matching between the indicating mark and the matching mark.

[0080] In one embodiment, the indicator mark is an indicator groove 1221 formed on the end surface of the valve shaft 122 . The indicator groove 1221 extends radially and axially along the valve shaft 122 to prevent the indicator mark from being worn and improve the clarity of the indication.

[0081] In other embodiments, the indicator mark may be an engraved mark or a printed mark provided on the end surface or side wall of the valve shaft 122. In the specific content of the above specific embodiments, the various technical features can be combined in any non-contradictory manner. To simplify the description, not all possible combinations of the above technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0082] The specific contents of the above-mentioned specific embodiments only express several embodiments of the present invention. Although the description is relatively specific and detailed, it should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the appended claims.

Claims

1. A valve core assembly, used in a water mixing valve, characterized in that: The valve core assembly includes: A valve sleeve (11) has an installation cavity (1113) with two open ends, and an outer wall of the valve sleeve (11) is provided with a hot water inlet (1111) and a cold water inlet (1112) spaced apart along the axial direction. The hot water inlet (1111) and the cold water inlet (1112) are spaced apart along the circumference of the valve sleeve (11); A first sealing member (13a) is sleeved on the outside of the valve sleeve (11) and is located between the cold water inlet (1112) and the hot water inlet (1111); A valve core member (12), the valve core member (12) being rotatably mounted in the mounting cavity (1113) and having a water mixing cavity (1213) with an open end, wherein a cavity wall of the water mixing cavity (1213) is provided with a water through hole (1214); One end of the valve core member (12) away from the opening of the mixing water chamber (1213) extends out of the valve sleeve (11) and is connected to the valve core driving member (3), so that the valve core driving member (3) drives the valve core member (12) to rotate and switch between the cold water conducting position, the mixed conducting position and the hot water conducting position. When the valve core member (12) is in the cold water conducting position, only the cold water inlet (1112) is connected to the water through hole (1214); when the valve core member (12) is in the mixed conducting position, both the cold water inlet (1112) and the hot water inlet (1111) are connected to the water through hole (1214); when the valve core member (12) is in the hot water conducting position, only the hot water inlet (1111) is connected to the water through hole (1214).

2. The valve core assembly according to claim 1, characterized in that The outer interference sleeve of the valve sleeve (11) is provided with a second sealing member (13b) and a third sealing member (13c); the cold water inlet (1112) is located between the second sealing member (13b) and the first sealing member (13a); and the hot water inlet (1111) is located between the first sealing member (13a) and the third sealing member (13c).

3. The valve core assembly according to claim 2, characterized in that: The third sealing member (13c) is located on a side of the first sealing member (13a) away from the opening of the water mixing chamber (1213), and the diameter of the cross-sectional circle of the third sealing member (13c) is larger than the diameters of the cross-sectional circles of the first sealing member (13a) and the second sealing member (13b); Alternatively, the second sealing member (13b) is located on a side of the first sealing member (13a) away from the opening of the water mixing chamber (1213), and the diameter of the cross-sectional circle of the second sealing member (13b) is greater than the diameters of the cross-sectional circles of the first sealing member (13a) and the second sealing member (13b).

4. The valve core assembly according to any one of claims 1 to 3, characterized in that: The valve core (12) comprises a water mixing sleeve (121) and a valve shaft (122) which are coaxially connected. The water mixing sleeve (121) is rotatably mounted in the mounting cavity (1113) and has the water mixing cavity (1213) and the water through hole (1214). The valve shaft (122) is connected to the blocking end of the water mixing sleeve (121) and is located outside the valve sleeve (11). The outer diameter of the water mixing sleeve (121) is larger than the diameter of the valve shaft (122). And / or, the cross section of the water through hole (1214) is fan-shaped, and the center of the circle corresponding to the fan-shaped is located on the axis of the valve core member (12).

5. The valve core assembly according to claim 4, characterized in that: The outer sleeve of the water mixing jacket (121) is provided with an inner sealing member (14), the inner sealing member (14) is located between the water through hole (1214) and the valve shaft (122), and the inner sealing member (14) is squeezed between the outer wall of the water mixing jacket (121) and the cavity wall of the installation cavity (1113).

6. The valve core assembly according to claim 5, characterized in that: The water mixing sleeve (121) comprises a sleeve portion (1211) and a sealing shaft portion (1212); the sealing shaft portion (1212) is coaxially connected between the sleeve portion (1211) and the valve shaft (122); the sleeve portion (1211) has the water mixing chamber (1213) and the water through hole (1214); the outer diameters of the sleeve portion (1211), the sealing shaft portion (1212) and the valve shaft (122) gradually decrease; and the inner sealing member (14) is sleeved on the sealing shaft portion (1212); The installation cavity (1113) comprises a main cavity portion and a sealing cavity portion that are coaxially connected, the aperture of the sealing cavity portion is smaller than the aperture of the main cavity portion, the sealing shaft portion (1212) is installed in the sealing cavity portion, and the sleeve portion (1211) is located in the main cavity portion.

7. The valve core assembly according to claim 4, characterized in that: An end surface of the valve shaft (122) is provided with an indicator mark, and the indicator mark indicates the circumferential position of the valve core member (12) relative to the valve sleeve (11).

8. The valve core assembly according to claim 7, characterized in that: The valve sleeve (11) is provided with a positioning boss (113) on the end surface facing the valve shaft (122), and a rotation-stopping plane (1131) is cut on the side of the positioning boss (113). The indicator mark extends along the radial direction of the valve shaft (122), and when the valve core assembly is in an initial state, the indicator mark is perpendicular to the rotation-stopping plane (1131) in a projection plane perpendicular to the axis of the valve shaft (122); And / or, the indicator mark comprises an indicator groove (1221) formed on the end surface of the valve shaft (122), and the indicator groove (1221) extends along the radial direction of the valve shaft (122).

9. A water mixing valve, comprising a valve body (2), the valve body (2) having a valve core cavity (22), a cold water channel (21), a mixed water outlet channel (23) and a hot water inlet channel (25), the valve core cavity (22) having a cold water communication port (221) communicating with the cold water channel (21), a mixed water outlet (223) communicating with the mixed water outlet channel (23) and a hot water communication port (222) communicating with the hot water inlet channel (25), characterized in that: The mixing water valve further comprises a valve core assembly and a valve core driving member (3) as described in any one of claims 1 to 8, the valve sleeve (11) is mounted in the valve core cavity (22) and the first sealing member (13a) is squeezed between the outer wall of the valve sleeve (11) and the inner wall of the valve core cavity (22), the cold water inlet (1112) is directly connected to the cold water connecting port (221), the hot water inlet (1111) is directly connected to the hot water connecting port (222), and the opening of the mixing water cavity (1213) faces the mixing water outlet (223); the valve core driving member (3) is mounted on the outside of the valve body (2) and is connected to the valve core member (12), and the valve core driving member (3) drives the valve core member (12) to rotate.

10. A water heater, characterized in that: It comprises the water mixing valve as claimed in claim 9.

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