Cartridge assembly, mixing valve and water heater

Abstract

The application discloses a valve core assembly, a water mixing valve and a water heater, and relates to the technical field of water mixing valves, wherein the valve core assembly comprises a mounting shell, a fixed valve core and a movable valve core, the mounting shell is provided with a mounting cavity; the fixed valve core is arranged in the mounting cavity, the fixed valve core is provided with a cold water inlet hole, a hot water inlet hole and a water outlet hole, and the opening area of the cold water inlet hole is larger than that of the hot water inlet hole; the movable valve core is provided with a water mixing cavity, the water inlet side of the water mixing cavity can be communicated with the cold water inlet hole and / or the hot water inlet hole, the water outlet side of the water mixing cavity is communicated with the water outlet hole; and the movable valve core is rotatably arranged in the mounting cavity to adjust the flow areas of the cold water inlet hole and the hot water inlet hole. According to the technical scheme, the opening area of the cold water inlet hole is larger than that of the hot water inlet hole, so that the cold water flow variation range is wider than the hot water flow variation range, thereby shortening the temperature variation gradient of the water outlet after the cold water and the hot water are mixed, and further widening the temperature adjustment range.

Description

Technical Field

[0001] This application relates to the field of control valve technology, and in particular to a valve core assembly, a mixing valve, and a water heater. Background Technology

[0002] A mixing valve is a device used to mix hot and cold water, typically installed in bathrooms, kitchens, and other places where water temperature regulation is required. The mixing valve mixes cold and hot water in a specific ratio to achieve the user's desired water temperature. Its main function is to regulate water temperature, ensuring a comfortable and suitable experience for the user. However, existing technologies for mixing valves suffer from a limited temperature regulation range. Summary of the Invention

[0003] The main purpose of this application is to provide a valve core assembly, a mixing valve, and a water heater, which aims to broaden the temperature regulation range of the mixing valve.

[0004] To achieve the above objectives, this application proposes a valve core assembly comprising a mounting housing, a fixed valve core, and a movable valve core. The mounting housing has a mounting cavity. The fixed valve core is disposed within the mounting cavity and has a cold water inlet, a hot water inlet, and an outlet. The opening area of ​​the cold water inlet is larger than that of the hot water inlet. The movable valve core has a mixing chamber, the inlet side of which is connected to the cold water inlet and / or the hot water inlet, and the outlet side of which is connected to the outlet. The movable valve core is rotatably disposed within the mounting cavity to adjust the flow area of ​​the cold water inlet and the hot water inlet. The mounting housing has a mounting cavity.

[0005] In one embodiment, the cold water inlet and the hot water inlet extend circumferentially along the fixed valve core and are arranged at intervals along the circumferential direction of the fixed valve core; the length of the cold water inlet in the circumferential direction of the fixed valve core is a first length, and the length of the hot water inlet in the circumferential direction of the fixed valve core is a second length, wherein the first length is greater than the second length.

[0006] In one embodiment, the width of the cold water inlet hole in the radial direction of the fixed valve core is a first width, and the width of the hot water inlet hole in the radial direction of the fixed valve core is a second width, wherein the first width is greater than or equal to the second width.

[0007] In one embodiment, the mixing chamber is a cavity with an opening at one end. The walls constituting the cavity include a first wall and a second wall that are connected to each other. The first wall is an annular wall. The opening and the second wall are arranged opposite to each other. The opening is located on the mating surface of the moving valve core and the fixed valve core.

[0008] In one embodiment, the mixing chamber has a first inner cavity profile arranged in an annular shape, which forms the shape of the first wall surface. The first inner cavity profile includes a first arc segment and a second arc segment arranged opposite to each other. The first arc segment is used to form part of the wall surface on the water inlet side, and the second arc segment is used to form part of the wall surface on the water outlet side. The center of the curvature circle of the first arc segment and the center of the curvature circle of the second arc segment are the same, and the radius of curvature of the first arc segment is greater than the radius of curvature of the second arc segment.

[0009] In one embodiment, the cold water inlet has a second annularly arranged inner cavity profile, which shapes the opening shape of the cold water inlet; the second inner cavity profile includes a third arc segment and a fourth arc segment extending circumferentially along the valve core, respectively, the center of the curvature circle of the third arc segment and the center of the curvature circle of the fourth arc segment are the same, and the radius of curvature of the third arc segment is larger than the radius of curvature of the fourth arc segment; the hot water inlet has a third annularly arranged inner cavity profile. The third inner cavity profile shapes the opening shape of the hot water inlet hole; the third inner cavity profile includes a fifth arc segment and a sixth arc segment extending circumferentially along the valve core, respectively, the center of the curvature circle of the fifth arc segment and the center of the curvature circle of the sixth arc segment are the same, the radius of curvature of the fifth arc segment is greater than the radius of curvature of the sixth arc segment; the length of the fourth arc segment is greater than the length of the sixth arc segment, and / or, the length of the third arc segment is greater than the length of the fifth arc segment.

[0010] In one embodiment, the centers of the curvature circles of the first, second, third, fourth, fifth, and sixth arc segments are all the same; the length of the first arc segment is greater than the length of the third arc segment, and the length of the first arc segment is less than the sum of the lengths of the third and fifth arc segments.

[0011] In one embodiment, the valve core assembly further includes a mixing screen disposed in the mixing chamber.

[0012] In one embodiment, the mounting housing includes a base and a housing disposed on the base, the base and the housing surrounding the mounting cavity; a first sealing element is provided between the fixed valve core and the base, and the moving valve core is located on the side of the fixed valve core away from the base; the base and the first sealing element are respectively provided with openings corresponding to the positions of the cold water inlet, the hot water inlet and the outlet.

[0013] In one embodiment, the valve core assembly further includes a valve stem for being driven to rotate the movable valve core. The valve stem includes a connecting seat and a rod body. The connecting seat is connected to the movable valve core, and the rod body passes through the housing. One end of the rod body is connected to the connecting seat inside the mounting cavity, and the other end is driven to connect to a driving member outside the mounting cavity.

[0014] This application also proposes a mixing valve, which includes:

[0015] The valve body includes a valve chamber, a cold water inlet channel, a hot water inlet channel, and an outlet channel; and

[0016] In any of the foregoing embodiments, the valve core assembly is disposed in the valve cavity, the cold water inlet is connected to the cold water inlet channel, the hot water inlet is connected to the hot water inlet channel, and the outlet is connected to the outlet channel.

[0017] In one embodiment, the mixing valve further includes a second sealing element disposed in the valve cavity, the second sealing element abutting between the valve body and the valve core assembly.

[0018] This application also discloses a water heater comprising:

[0019] Water heater body; and

[0020] The valve core assembly described in any of the foregoing embodiments, or the mixing valve described in any of the foregoing embodiments.

[0021] The technical solution of this application sets the opening area of ​​the cold water inlet to be larger than that of the hot water inlet, so that the change range of cold water flow is wider than that of hot water flow. When the moving valve core rotates a unit angle, the change of cold water flow is gradual, while the change of hot water flow is significant. Thus, at least part of the mixing stage between cold and hot water can form a dynamic flow compensation mechanism with asymmetrical flow change characteristics, making the transition of the cold and hot ratio during the adjustment process smoother, shortening the temperature change gradient of the outlet water after the cold and hot water are mixed, thereby widening the temperature adjustment range. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of an embodiment of the mixing valve provided in this application;

[0024] Figure 2 for Figure 1 A sectional view;

[0025] Figure 3 This is a schematic diagram of another embodiment of the valve core assembly provided in this application;

[0026] Figure 4 for Figure 3 A sectional view;

[0027] Figure 5 for Figure 3 A schematic diagram of the decomposed structure;

[0028] Figure 6 for Figure 5 The illustrated embodiment is a schematic diagram of the structure of a fixed valve core.

[0029] Figure 7 for Figure 6 A schematic diagram of the structure of the fixed valve core from another perspective;

[0030] Figure 8 for Figure 5 The illustrated embodiment is a schematic diagram of the structure of one embodiment of the moving valve core;

[0031] Figure 9 for Figure 8 A schematic diagram of the moving valve core from another perspective;

[0032] Figure 10 This diagram shows that the water inlet side of the mixing chamber of the valve core assembly provided in this application is only connected to the hot water inlet hole;

[0033] Figure 11 This diagram illustrates one of the states in which the water inlet side of the mixing chamber in the valve core assembly provided in this application is simultaneously connected to both the cold water inlet and the hot water inlet.

[0034] Figure 12 This is a schematic diagram illustrating another state in the valve core assembly provided in this application, where the water inlet side of the mixing chamber is simultaneously connected to both the cold water inlet and the hot water inlet.

[0035] Figure 13 This is a schematic diagram illustrating that in the valve core assembly provided in this application, the water inlet side of the mixing chamber is only connected to the cold water inlet hole.

[0036] Explanation of icon numbers:

[0037] 1. Mixing valve;

[0038] 10. Valve core assembly; 100. Mounting housing; 110. Base; 120. Housing; 101. Mounting cavity; 200. Fixed valve core; 210. Cold water inlet; L1. First length; W1. First width; 211. Second inner cavity profile; 211a. Third arc segment; 211b. Fourth arc segment; 220. Hot water inlet; L2. Second length; W2. Second width; 221. Third inner cavity Profile; 221a, fifth arc segment; 221b, sixth arc segment; 230, water outlet; 300, moving valve core; 301, mixing chamber; 310, mating surface; 320, first wall surface; 321, first inner cavity profile; 321a, first arc segment; 321b, second arc segment; 330, second wall surface; 400, first sealing element; 500, valve stem; 510, connecting seat; 520, rod body;

[0039] 20. Valve body; 21. Valve chamber; 22. Cold water inlet channel; 23. Hot water inlet channel; 24. Water outlet channel;

[0040] 30. Drive components;

[0041] 40. Second sealing element;

[0042] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0043] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0044] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0045] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0046] A mixing valve is a device used to mix hot and cold water, typically installed in bathrooms, kitchens, and other places where water temperature regulation is required. The mixing valve mixes cold and hot water in a specific ratio to achieve the user's desired water temperature. Its main function is to regulate water temperature, ensuring a comfortable and suitable experience for the user. However, existing technologies for mixing valves suffer from a limited temperature regulation range.

[0047] This application discloses a valve core assembly and a mixing valve, aiming to broaden the temperature regulation range of the mixing valve. The valve core assembly typically includes a valve body and a valve core assembly itself, which is housed within the valve body and can be sold separately. For ease of understanding and explanation, details are attached to the specification of this application. Figures 1 to 13 In the diagram, the arrowhead indicates the opening, hole, or cavity.

[0048] Please see Figures 1 to 5 In one embodiment of this application, the valve core assembly 10 includes a mounting shell 100, a fixed valve core 200, and a movable valve core 300. The mounting shell 100 has a mounting cavity 101. The fixed valve core 200 is disposed in the mounting cavity 101 and has a cold water inlet hole 210, a hot water inlet hole 220, and a water outlet hole 230. The opening area of ​​the cold water inlet hole 210 is larger than the opening area of ​​the hot water inlet hole 220. The movable valve core 300 has a mixing chamber 301. The water inlet side of the mixing chamber 301 can communicate with the cold water inlet hole 210 and / or the hot water inlet hole 220, and the water outlet side of the mixing chamber 301 communicates with the water outlet hole 230. The movable valve core 300 is rotatably disposed in the mounting cavity 101 to adjust the flow area of ​​the cold water inlet hole 210 and the hot water inlet hole 220.

[0049] Mounting housing 100 has mounting cavity 101, which provides a space to accommodate other components, namely mounting cavity 101. It provides structural support for the entire valve core assembly 10 so that the various parts of the valve core assembly 10 can be properly installed, fitted and operated.

[0050] The fixed valve core 200, located within the mounting cavity 101, has a cold water inlet 210, a hot water inlet 220, and an outlet 230. The fixed valve core 200 is one of the core components of the valve core assembly 10, and its function is to guide the flow of cold water, hot water, and mixed water. The cold water inlet 210 and the hot water inlet 220 are connected to the cold water and hot water sources, respectively, while the outlet 230 allows the mixed cold and hot water to flow out. The fixed valve core 200 provides a basic path for guiding water flow.

[0051] The cross-sectional shape of the cold water inlet 210 and the hot water inlet 220 can be a regular shape such as a circle, square, or ellipse, or a combination of square and circle. Alternatively, it can be an irregular shape with slight modifications to the regular shapes such as circle, square, or ellipse, for example... Figure 6 and Figure 7 As shown, rounded corners are made at both ends of the elongated hole.

[0052] The movable valve core 300 has a mixing chamber 301, which is connected to both the cold water inlet 210 and the hot water inlet 220 on its inlet side. In other words, the mixing chamber 301 is connected to an external water source through the cold water inlet 210 and the hot water inlet 220. The movable valve core 300 is rotatably disposed in the mounting cavity 101 to adjust the flow area of ​​the cold water inlet 210 and the hot water inlet 220. In other words, the rotation of the movable valve core 300 allows it to control the effective opening area of ​​the cold water inlet 210 and the hot water inlet 220, thereby adjusting the flow ratio of cold water and hot water.

[0053] The opening area of ​​the cold water inlet 210 typically refers to the cross-sectional area perpendicular to the depth of the cold water inlet 210. The opening area of ​​the cold water inlet 210 limits its maximum flow area. Similarly, the opening area of ​​the hot water inlet 220 typically refers to the cross-sectional area perpendicular to the depth of the hot water inlet 220. The opening area of ​​the hot water inlet 220 limits its maximum flow area.

[0054] The opening area of ​​the cold water inlet hole 210 is larger than the opening area of ​​the hot water inlet hole 220; for example, the area ratio of the opening area of ​​the cold water inlet hole 210 to the opening area of ​​the hot water inlet hole 220 can be between 1.01 and 3.00; for example, the area ratio of the opening area of ​​the cold water inlet hole 210 to the opening area of ​​the hot water inlet hole 220 includes, but is not limited to, 1.20, 1.50, 1.60, 1.80, 2.00, 2.20, 2.40, 2.50, 2.70 or 3.00, etc.

[0055] Furthermore, such as Figures 10 to 13 As shown, Figure 10 This is a schematic diagram showing that the water inlet side of the mixing chamber 301 of the valve core assembly 10 provided in this application is only connected to the hot water inlet hole 220; Figure 11 This is a schematic diagram showing one of the states in which the water inlet side of the mixing chamber 301 of the valve core assembly 10 provided in this application is simultaneously connected to the cold water inlet hole 210 and the hot water inlet hole 220. Figure 12 This is a schematic diagram illustrating another state in which the water inlet side of the mixing chamber 301 of the valve core assembly 10 provided in this application is simultaneously connected to both the cold water inlet hole 210 and the hot water inlet hole 220. Figure 13 This is a schematic diagram showing that in the valve core assembly 10 provided in this application, the water inlet side of the mixing chamber 301 is only connected to the cold water inlet hole 210.

[0056] The water inlet side of the mixing chamber 301 can be connected to the cold water inlet 210 and / or the hot water inlet 220. This should be understood as meaning that the water inlet side of the mixing chamber 301 has three communication states with the cold water inlet 210 and the hot water inlet 220: First, the water inlet side of the mixing chamber 301 is only connected to the hot water inlet 220 (e.g.,...). Figure 10 (as shown); secondly: the water inlet side of the mixing chamber 301 is simultaneously connected to both the cold water inlet 210 and the hot water inlet 220 (as shown). Figure 11 and 12 (as shown); Thirdly: the water inlet side of the mixing chamber 301 is connected to the cold water inlet hole 210 (as shown). Figure 13 (As shown).

[0057] When the moving valve core 300 rotates, it can change the effective flow length of the cold water inlet hole 210 and the hot water inlet hole 220 along the circumference of the moving valve core 300, thereby adjusting the effective flow area of ​​the cold water inlet hole 210 and the hot water inlet hole 220.

[0058] For ease of understanding, taking the cross-sectional shape of the cold water inlet hole 210 and the hot water inlet hole 220 as a strip hole as an example, the cold water inlet hole 210 and the hot water inlet hole 220 are extended circumferentially along the fixed valve core 200. In this case, the way to achieve the opening area of ​​the cold water inlet hole 210 being larger than the opening area of ​​the hot water inlet hole 220 is as follows: the opening widths of the cold water inlet hole 210 and the hot water inlet hole 220 are approximately the same, and the opening length of the cold water inlet hole 210 is the same as the opening length of the hot water inlet hole 220; the opening lengths of the cold water inlet hole 210 and the hot water inlet hole 220 are approximately the same, and the opening width of the cold water inlet hole 210 is larger than the opening width of the hot water inlet hole 220; or the opening width of the cold water inlet hole 210 is larger than the opening width of the hot water inlet hole 220, and the opening length of the cold water inlet hole 210 is the opening length of the hot water inlet hole 220.

[0059] Regarding widening the temperature regulation range of mixing valve 1: Since the opening area of ​​cold water inlet hole 210 is larger than that of hot water inlet hole 220, the change range of cold water flow is wider than that of hot water flow. When the moving valve core 300 rotates by a unit angle, the change of cold water flow is gradual, while the change of hot water flow is significant. Thus, at least part of the mixing stage between cold and hot water can form a dynamic flow compensation mechanism with asymmetrical flow change characteristics, making the transition of the cold and hot ratio during the regulation process smoother. This shortens the temperature change gradient of the outlet water after the cold and hot water are mixed, thereby widening the temperature regulation range.

[0060] The technical solution of this application sets the opening area of ​​the cold water inlet hole 210 to be larger than that of the hot water inlet hole 220, so that the change range of cold water flow is wider than that of hot water flow. When the moving valve core 300 rotates a unit angle, the change of cold water flow is gradual, while the change of hot water flow is significant. Thus, at least part of the mixing stage between cold and hot water can form a dynamic flow compensation mechanism with asymmetrical flow change characteristics, which makes the transition of the cold and hot ratio during the adjustment process smoother, shortens the temperature change gradient of the outlet water after the cold and hot water are mixed, and thus widens the temperature adjustment range.

[0061] In one exemplary embodiment, such as Figure 7 As shown, the cold water inlet hole 210 and the hot water inlet hole 220 extend circumferentially along the fixed valve core 200 and are arranged at intervals along the circumferential direction of the fixed valve core 200; the length of the cold water inlet hole 210 in the circumferential direction of the fixed valve core 200 is the first length L1, and the length of the hot water inlet hole 220 in the circumferential direction of the fixed valve core 200 is the second length L2, and the first length L1 is greater than the second length L2.

[0062] Wherein, the first length L1 is as follows Figure 7As shown in L1, it refers to the distance between the beginning and end points of the cold water inlet hole 210 in the circumferential direction of the fixed valve core 200; the second length L2 is as follows: Figure 7 As shown by L2, it refers to the distance between the starting point and the ending point of the hot water inlet hole 220 in the circumferential direction of the fixed valve core 200. The first length L1 is greater than the second length L2. The ratio of the first length L1 to the second length L2 can be between 1.01 and 3.00. For example, the ratio of the first length L1 to the second length L2 includes, but is not limited to, 1.20, 1.50, 1.60, 1.80, 2.00, 2.20, 2.40, 2.50, 2.70, or 3.00.

[0063] Based on the previous embodiment, the width of the cold water inlet hole 210 in the radial direction of the fixed valve core 200 is a first width W1, and the width of the hot water inlet hole 220 in the radial direction of the fixed valve core 200 is a second width W2, wherein the first width W1 is greater than or equal to the second width W2.

[0064] First width W1 as follows Figure 7 As shown in W1, it refers to the distance between the beginning and end points of the cold water inlet hole 210 in the radial direction of the fixed valve core 200; the second width W2 is as follows: Figure 7 W2, as shown, refers to the distance between the starting point and the ending point of the hot water inlet hole 220 in the radial direction of the fixed valve core 200. The first width W1 is greater than the second width W2. The ratio of the first width W1 to the second width W2 can be between 1.01 and 3.00. For example, the ratio of the first width W1 to the second width W2 includes, but is not limited to, 1.20, 1.50, 1.60, 1.80, 2.00, 2.20, 2.40, 2.50, 2.70, or 3.00.

[0065] In some embodiments, the selection of the first length L1, the second length L2, the first width W1, and the second width W2 also requires that the ratio of the opening area of ​​the cold water inlet hole 210 to the opening area of ​​the hot water inlet hole 220 be controlled between 1.01 and 3.00.

[0066] In this embodiment, the first length L1 is greater than the second length L2, that is, the length of the cold water inlet 210 is greater than the length of the hot water inlet 220, so that the adjustable range of the cold water flow is wider than that of the hot water flow, thus forming the basis for adjusting the cold and hot water flow ratio. In this way, when the moving valve core 300 rotates by one unit angle, the cold water flow changes relatively slowly, while the hot water flow changes more significantly, making the cold water flow variation wider than that of the hot water flow. During the temperature adjustment process, the cold water flow remains relatively stable, and the variable of the hot water flow becomes the main variable. The large flow of cold water and the sensitive adjustment of hot water complement each other, making the temperature change of the mixed water more gradual, thereby reducing the temperature gradient of the mixed water.

[0067] In one embodiment, the mixing chamber 301 is a cavity with an opening at one end. The walls constituting the cavity include a first wall surface 320 and a second wall surface 330 that are connected to each other. The first wall surface 320 is an annular wall surface. The opening and the second wall surface 330 are arranged opposite to each other. The opening is located on the mating surface 310 of the moving valve core 300 and the fixed valve core 200. The cold water inlet hole 210, the hot water inlet hole 220 and the outlet hole 230 can be simultaneously connected to the mixing chamber 301 through the opening.

[0068] The mixing chamber 301 has a structure where it is open at one end, and its walls are formed by a first wall surface 320 and a second wall surface 330 connected to each other. The first wall surface 320 is annular, and the second wall surface 330 is opposite to the first wall surface 320. The cross-sectional shape of the first wall surface 320 can be annular, elliptical, or sector-shaped, or a combination of any two of these shapes.

[0069] An opening is located on the mating surface 310 of the moving valve core 300 and the fixed valve core 200. The cold water inlet 210, hot water inlet 220, and outlet 230 of the fixed valve core 200 can simultaneously communicate with the mixing chamber 301 through this opening. Thus, the fixed valve core 200 divides the opening into an inlet side and an outlet side. The inlet side communicates with the cold water inlet 210 and the hot water inlet 220, while the outlet side communicates with the outlet 230. Therefore, during the mixing process, the flow rate of cold or hot water can be adjusted by changing the mating position of the moving valve core 300 and the fixed valve core 200, thereby regulating the water temperature at the outlet 230.

[0070] In one embodiment, the mixing chamber 301 has a first inner cavity profile 321 arranged in an annular shape, which forms the shape of a first wall surface 320. The first inner cavity profile 321 includes a first arc segment 321a and a second arc segment 321b arranged opposite to each other. The first arc segment 321a is used to construct part of the wall surface on the water inlet side, and the second arc segment 321b is used to construct part of the wall surface on the water outlet side. The center of the curvature circle of the first arc segment 321a and the center of the curvature circle of the second arc segment 321b are the same, and the radius of curvature of the first arc segment 321a is greater than the radius of curvature of the second arc segment 321b.

[0071] The mixing chamber 301 has a first inner cavity profile 321 arranged in a ring shape. The first inner cavity profile 321 refers to the reference contour line of the mixing chamber 301, and is a key line used to define the shape of the mixing chamber 301. Further, the first inner cavity profile 321 constructs the shape of the first wall surface 320, referring to the geometry of the first wall surface 320 generated or constrained by the first inner cavity profile 321. For example, in 3D modeling, the first inner cavity profile 321 serves as a cross-sectional profile, and the first wall surface 320 is formed by an extrusion operation.

[0072] The first arc segment 321a and the second arc segment 321b are two oppositely arranged arc segments located at different positions on the profile and having different geometric parameters (such as radius of curvature and center position of the curvature circle). The first arc segment formed by the first arc segment 321a is a concave surface, and the second arc segment formed by the second arc segment 321b is a concave surface.

[0073] Inlet side and outlet side: These are the directional areas of fluid flow in the mixing chamber 301. The inlet side is the fluid inlet area of ​​the mixing chamber 301, and the outlet side is the outlet area of ​​the mixing chamber 301.

[0074] The center of the curvature circle of the first arc segment 321a is the same as the center of the curvature circle of the second arc segment 321b. The radius of curvature of the first arc segment 321a is larger than that of the second arc segment 321b. In other words, the radius of curvature of the first arc segment 321a (inlet side) is larger, creating a gently transitioning inlet wall and reducing flow resistance. The radius of curvature of the second arc segment 321b (outlet side) is smaller, creating a compact outlet wall that accelerates the fluid or adjusts its flow direction.

[0075] The radius of curvature of the first arc segment 321a is as follows: Figure 9 As shown in r1, the radius of curvature of the second arc segment 321b is as follows: Figure 9 As shown in r2.

[0076] In one embodiment, the cold water inlet 210 has a second inner cavity profile 211 arranged in an annular shape, which forms the opening shape of the cold water inlet 210. The second inner cavity profile 211 includes a third arc segment 211a and a fourth arc segment 211b extending circumferentially along the valve core 200, respectively. The center of the curvature circle of the third arc segment 211a and the center of the curvature circle of the fourth arc segment 211b are the same, and the radius of curvature of the third arc segment 211a is greater than the radius of curvature of the fourth arc segment 211b.

[0077] The second inner cavity profile 211 is the reference contour line for the opening shape of the cold water inlet 210. This second inner cavity profile 211 is a key line used to define the shape of the cold water inlet 210; the geometry of the cold water inlet 210 can be generated or constrained through the second inner cavity profile 211. For example, in 3D modeling, the second inner cavity profile 211 serves as a boundary condition, and the cold water inlet 210 is formed through an extrusion operation.

[0078] The hot water inlet 220 has a third inner cavity profile 221 arranged in a ring shape, which forms the opening shape of the hot water inlet 220. The third inner cavity profile 221 includes a fifth arc segment 221a and a sixth arc segment 221b extending circumferentially along the valve core 200, respectively. The center of the curvature circle of the fifth arc segment 221a and the center of the curvature circle of the sixth arc segment 221b are the same, and the radius of curvature of the fifth arc segment 221a is greater than the radius of curvature of the sixth arc segment 221b.

[0079] The third inner cavity profile 221 is the reference contour line for the opening shape of the hot water inlet 220. This third inner cavity profile 221 is a key line used to define the shape of the hot water inlet 220; the geometry of the hot water inlet 220 can be generated or constrained through the third inner cavity profile 221. For example, in 3D modeling, the third inner cavity profile 221 serves as a boundary condition, and the hot water inlet 220 is formed through an extrusion operation.

[0080] The length of the fourth arc segment 211b is greater than the length of the sixth arc segment 221b, and / or the length of the third arc segment 211a is greater than the length of the fifth arc segment 221a.

[0081] In this case, the length of the fourth arc segment 211b may be greater than the length of the sixth arc segment 221b, the length of the third arc segment 211a may be greater than the length of the fifth arc segment 221a, or the length of the fourth arc segment 211b may be greater than the length of the sixth arc segment 221b, and the length of the third arc segment 211a may be greater than the length of the fifth arc segment 221a.

[0082] In this embodiment, the length of the fourth arc segment 211b is greater than the length of the sixth arc segment 221b, and / or the length of the third arc segment 211a is greater than the length of the fifth arc segment 221a, which makes the opening area of ​​the cold water hole larger, thereby enabling the effective flow area of ​​the cold water hole to be switched to a larger size, thus allowing for more precise cold water flow rate adjustment (especially when low temperature is required).

[0083] The radius of curvature of the third arc segment 211a is as follows: Figure 7 As shown in r3, the radius of curvature of the fourth arc segment 211b is as follows Figure 7 As shown in r4, the radius of curvature of the fifth arc segment 221a is as follows: Figure 7 As shown in r5, the radius of curvature of the sixth arc segment 221b is as follows: Figure 7 As shown in r6.

[0084] In one embodiment, the centers of the curvature circles of the first arc segment 321a, the second arc segment 321b, the third arc segment 211a, the fourth arc segment 211b, the fifth arc segment 221a, and the sixth arc segment 221b are all the same; the length of the first arc segment 321a is greater than the length of the third arc segment 211a, and the length of the first arc segment 321a is less than the sum of the lengths of the third arc segment 211a and the fifth arc segment 221a.

[0085] In this embodiment, the curvature circles of the first arc segment 321a, the second arc segment 321b, the third arc segment 211a, the fourth arc segment 211b, the fifth arc segment 221a, and the sixth arc segment 221b coincide, forming a concentric multi-arc structure. Since the centers of all arc segments are the same, firstly, the concentric arcs ensure uniform radial distribution of the fluid, reducing flow deviation or localized eddies. Secondly, with all arc segments having the same center, only the radius and angle parameters need to be adjusted during CNC machining, reducing programming complexity.

[0086] The length of the first arc segment 321a is greater than the length of the third arc segment 211a, and the length of the first arc segment 321a is less than the sum of the lengths of the third arc segment 211a and the fifth arc segment 221a. Combined with the fact that the length of the third arc segment 211a is greater than the length of the fifth arc segment 221a, this allows the valve core to have an adjustable range that allows for full opening of hot water and adaptation to a small amount of cold water (e.g., Figures 10 to 11 As shown, all settings are hot water fully open. This is suitable for storage water heaters. As the hot water in the tank continues to cool down during use, while the cold water temperature remains constant, the valve core 300 needs to be continuously adjusted to change the mixing ratio of hot and cold water. Within this range, this setting allows for slow temperature adjustment while ensuring water volume. When the temperature adjustment range is wider, the transition of the valve core in adjusting the hot and cold water ratio will be smoother, resulting in a more comfortable and stable mixed water temperature.

[0087] In one embodiment, the valve core assembly 10 further includes a mixing screen disposed in the mixing chamber 301.

[0088] The mixing mesh can be block-shaped or plate-shaped, and its shape matches the shape of the mixing chamber 301. For example, the mixing mesh is block-shaped and is interference-fitted with the moving valve core 300 to prevent the mixing mesh from falling off during the temperature adjustment process of the moving valve core 300.

[0089] In this embodiment, when the valve core is in the mixing state, the cold water entering from the cold water inlet 210 and the hot water entering from the hot water inlet 220 first impact the mixing screen through the water passage. The unevenness of the mixing screen surface causes the water to flow turbulently, making the cold and hot water mix more thoroughly, thereby improving the mixing effect of cold and hot water.

[0090] In one embodiment, please refer to Figures 3 to 5 As shown, the mounting housing 100 includes a base 110 and a housing 120 disposed on the base 110, with the base 110 and housing 120 forming a mounting cavity 101; a first sealing element 400 is provided between the fixed valve core 200 and the base 110, and the movable valve core 300 is located on the side of the fixed valve core 200 away from the base 110; the base 110 and the first sealing element 400 are respectively provided with openings at the positions of the cold water inlet hole 210, the hot water inlet hole 220 and the outlet hole 230.

[0091] The mounting housing 100 includes a base 110 and a housing 120 disposed on the base 110. That is, the mounting housing 100 is a split structure design. The base 110 and housing 120 combine to form a mounting cavity 101, achieving modular packaging of the valve body 20 assembly. The split structure of the mounting housing 100 facilitates the installation and maintenance of internal components (such as the fixed valve core 200 and the moving valve core 300), while the housing 120 provides external protection and enhances structural stability. The installation between the base 110 and the housing 120 can be by plugging, snapping, or fastening; for example, such as... Figures 3 to 5 As shown, one end of the housing 120 is open, and the side wall of the housing 120 is provided with multiple fastening slots. The base 110 covers the open end of the housing 120 and is provided with multiple fasteners. The multiple fasteners and the multiple fastening slots are connected in a one-to-one manner.

[0092] The first sealing element 400 between the fixed valve core 200 and the base 110 is usually made of materials such as rubber or silicone. Generally speaking, at least one of the fixed valve core 200 and the base 110 is provided with a receiving groove for accommodating the first sealing element 400, thereby reducing the possibility of misalignment of the first sealing element 400 during the use of the valve core assembly 10.

[0093] The base 110 and the first sealing element 400 are respectively provided with holes at the positions of the cold water inlet hole 210, the hot water inlet hole 220 and the outlet hole 230. In this way, the first sealing element 400 can seal the gap between the fixed valve core 200 and the base 110 to prevent water from flowing between cold water, hot water and mixed water (the mixed water of cold water and hot water coming out of the outlet hole 230).

[0094] In one embodiment, the valve core assembly 10 further includes a valve stem 500 for being driven to rotate the moving valve core 300. The valve stem 500 includes a connecting seat 510 and a rod body 520. The connecting seat 510 is connected to the moving valve core 300, and the rod body 520 passes through the housing 120. One end of the rod body 520 is connected to the connecting seat 510 inside the mounting cavity 101, and the other end is driven to be connected to the driving member 30 outside the mounting cavity 101.

[0095] The connecting seat 510 is fixedly connected to the moving valve core 300, and the rod 520 passes through the housing 120 and is connected to the external drive component 30. In this way, the valve stem 500 transmits the movement of the external drive component 30 (such as a motor or manual device) to the internal moving valve core 300. One end of the rod 520 is connected to the connecting seat 510 inside the mounting cavity 101, and the other end extends outside the cavity and is linked with the drive component 30. The rod 520 achieves mechanical isolation of power transmission and protects the drive component 30 from media corrosion or high temperature.

[0096] This application also proposes a mixing valve 1, which includes a valve body 20 and a valve core assembly 10. The specific structure of the valve core assembly 10 is as described in the above embodiments. Since this mixing valve 1 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0097] Among them, the mixing valve 1 can be an electronic valve or a mechanical valve. When the mixing valve 1 is an electronic valve, the electronic valve is usually a thermostatic valve.

[0098] Furthermore, the valve body 20 is provided with a valve cavity 21, a cold water inlet channel 22, a hot water inlet channel 23, and an outlet channel 24; the valve core assembly 10 is located in the valve cavity 21, the cold water inlet hole 210 is connected to the cold water inlet channel 22, the hot water inlet hole 220 is connected to the hot water inlet channel 23, and the outlet hole 230 is connected to the outlet channel 24.

[0099] The valve chamber 21, as the core control chamber, achieves independent input and mixed output of cold and hot water through the independent layout of the cold water inlet channel 22, the hot water inlet channel 23, and the outlet channel 24. The cold water inlet hole 210, the hot water inlet hole 220, and the outlet hole 230 on the valve core assembly 10 correspond to the cold and hot water channels and the outlet channel 24 in the valve chamber 21, respectively. By rotating or displacing the valve core, the alignment of the holes is controlled, the mixing ratio of cold and hot water is adjusted, and the outlet water temperature is continuously adjustable.

[0100] In one embodiment, the mixing valve 1 further includes a second sealing member 40 disposed in the valve cavity 21, the second sealing member 40 abutting between the valve body 20 and the valve core assembly 10.

[0101] The second seal 40 is similar to the first seal 400 and is usually made of materials such as rubber or silicone. Generally speaking, at least one of the valve body 20 and the base 110 is provided with a receiving groove for accommodating the second seal 40, thereby reducing the possibility of misalignment of the second seal 40 during the use of the mixing valve 1.

[0102] The valve body 20 and the second seal 40 are also provided with openings at the positions corresponding to the cold water inlet 210, the hot water inlet 220 and the outlet 230, respectively. In this way, the second seal 40 can seal the gap between the valve core 200 and the base 110 to prevent water from flowing between cold water, hot water and mixed water (the mixed water of cold water and hot water coming out of the outlet 230).

[0103] This application also proposes a water heater, which includes a water heater body and a valve core assembly 10 of any of the foregoing embodiments. The water heater includes a water heater body and a mixing valve 1 of any of the foregoing embodiments. The specific structure of the valve core assembly 10 or the mixing valve 1 is as described in the above embodiments. Since the mixing valve 1 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0104] The water heater can be used for bathing, washing dishes, or washing hands; it can be an electric water heater or a gas water heater. For example, the water heater is an electric water heater, which is a device that converts electrical energy into heat energy. Common types of electric water heaters include storage water heaters and instantaneous water heaters. The mixing valve 1 is usually installed on the water circuit components of the water heater.

[0105] The above description is merely an exemplary embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A valve core assembly, characterized in that, include: Mounting housing with mounting cavity; A fixed valve core is disposed within the mounting cavity. The fixed valve core has a cold water inlet, a hot water inlet, and an outlet. The opening area of ​​the cold water inlet is larger than the opening area of ​​the hot water inlet. The moving valve core is provided with a mixing chamber. The inlet side of the mixing chamber can be connected to the cold water inlet and / or the hot water inlet, and the outlet side of the mixing chamber is connected to the outlet. The moving valve core is rotatably disposed in the mounting cavity to adjust the flow area of ​​the cold water inlet and the hot water inlet.

2. The valve core assembly as claimed in claim 1, characterized in that, The cold water inlet and the hot water inlet extend circumferentially along the fixed valve core and are arranged at intervals along the circumferential direction of the fixed valve core. The length of the cold water inlet hole in the circumferential direction of the fixed valve core is a first length, and the length of the hot water inlet hole in the circumferential direction of the fixed valve core is a second length, wherein the first length is greater than the second length.

3. The valve core assembly as described in claim 2, characterized in that, The width of the cold water inlet hole in the radial direction of the fixed valve core is a first width, and the width of the hot water inlet hole in the radial direction of the fixed valve core is a second width, wherein the first width is greater than or equal to the second width.

4. The valve core assembly as described in any one of claims 1 to 3, characterized in that, The mixing chamber is a cavity with an opening at one end. The walls of the cavity include a first wall and a second wall that are connected to each other. The first wall is an annular wall. The opening and the second wall are arranged opposite to each other. The opening is located on the mating surface of the moving valve core and the stationary valve core.

5. The valve core assembly as claimed in claim 4, characterized in that, The mixing chamber has a first inner cavity profile arranged in a ring shape, and the first inner cavity profile forms the shape of the first wall surface; The first inner cavity profile includes a first arc segment and a second arc segment arranged opposite to each other. The first arc segment is used to construct part of the wall surface on the water inlet side, and the second arc segment is used to construct part of the wall surface on the water outlet side. The center of the curvature circle of the first arc segment and the center of the curvature circle of the second arc segment are the same, and the radius of curvature of the first arc segment is greater than the radius of curvature of the second arc segment.

6. The valve core assembly as claimed in claim 5, characterized in that, The cold water inlet has a second inner cavity profile arranged in an annular shape, which forms the opening shape of the cold water inlet; the second inner cavity profile includes a third arc segment and a fourth arc segment extending circumferentially along the valve core, respectively, the center of the curvature circle of the third arc segment and the center of the curvature circle of the fourth arc segment are the same, and the radius of curvature of the third arc segment is greater than the radius of curvature of the fourth arc segment; The hot water inlet has a third inner cavity profile arranged in a ring shape, which forms the opening shape of the hot water inlet; the third inner cavity profile includes a fifth arc segment and a sixth arc segment extending circumferentially along the valve core, respectively, the center of the curvature circle of the fifth arc segment and the center of the curvature circle of the sixth arc segment are the same, and the radius of curvature of the fifth arc segment is greater than the radius of curvature of the sixth arc segment; The length of the fourth arc segment is greater than the length of the sixth arc segment, and / or the length of the third arc segment is greater than the length of the fifth arc segment.

7. The valve core assembly as claimed in claim 6, characterized in that, The centers of the curvature circles of the first arc segment, the second arc segment, the third arc segment, the fourth arc segment, the fifth arc segment, and the sixth arc segment are all the same. The length of the first arc segment is greater than the length of the third arc segment, and the length of the first arc segment is less than the sum of the lengths of the third arc segment and the fifth arc segment.

8. The valve core assembly as claimed in claim 4, characterized in that, The valve core assembly also includes a mixing screen, which is disposed in the mixing chamber.

9. The valve core assembly as claimed in claim 4, characterized in that, The mounting housing includes a base and a housing disposed on the base, the base and the housing enclosing the mounting cavity; A first sealing element is provided between the fixed valve core and the base, and the moving valve core is located on the side of the fixed valve core away from the base; The base and the first sealing element are respectively provided with openings at the positions of the cold water inlet, the hot water inlet and the outlet.

10. The valve core assembly as claimed in claim 9, characterized in that, The valve core assembly also includes a valve stem for being driven to rotate the moving valve core. The valve stem includes a connecting seat and a rod body. The connecting seat is connected to the moving valve core, and the rod body passes through the housing. One end of the rod body is connected to the connecting seat inside the mounting cavity, and the other end is connected to the driving component outside the mounting cavity.

11. A mixing valve, characterized in that, include: The valve body is equipped with a valve chamber, a cold water inlet channel, a hot water inlet channel, and an outlet channel; as well as The valve core assembly as described in any one of claims 1 to 10, wherein the valve core assembly is disposed in the valve cavity, the cold water inlet is connected to the cold water inlet channel, the hot water inlet is connected to the hot water inlet channel, and the outlet is connected to the outlet channel.

12. The mixing valve as described in claim 11, characterized in that, The mixing valve further includes a second sealing element disposed in the valve cavity, the second sealing element abutting between the valve body and the valve core assembly.

13. A water heater, characterized in that, include: Water heater body; as well as The valve core assembly as described in any one of claims 1 to 10, or the mixing valve as described in claim 11 or 12.

Images