Water mixing valve and water heater

Abstract

The utility model belongs to the technical field of valves, and particularly discloses a water mixing valve and a water heater. The water mixing valve comprises a valve body, an electricity-proof wall and an installation part. The valve body is provided with a cold water channel, a water mixing cavity and a water mixing channel which are sequentially communicated, the valve body is provided with two joint seat parts which are arranged at intervals, each joint seat part is provided with a mounting cavity with one open end, one mounting cavity is communicated with the cold water channel, and the other mounting cavity is communicated with the water mixing cavity; the electricity-proof walls are in one-to-one correspondence with the connector base parts and internally provided with electricity-resisting waterways, the first ends of the electricity-proof walls are inserted into the mounting cavities, the first ends of the electricity-resisting waterways communicate with the mounting cavities, the second ends of the electricity-resisting waterways penetrate through the end faces of the ends, away from the valve body, of the electricity-proof walls, and limiting parts are arranged on the outer side walls of the first ends of the electricity-proof walls; and the mounting piece is inserted into the joint seat part, partially extends into the mounting cavity and is propped against one side, far away from the bottom of the mounting cavity, of the limiting part. According to the water mixing valve and the water heater, the structure of the valve body can be simplified, and the disassembly and assembly efficiency of the water mixing valve can be improved.

Description

Technical Field

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

[0002] Electric water heaters heat water by applying electricity to an internal electric heating device. To prevent electrical leakage during use, electric water heaters are equipped with anti-electrical barriers at the water inlet and outlet. These walls utilize the inherent electrical resistance of water to reduce the current flowing through it, thereby minimizing the risk of electrical leakage.

[0003] In existing technology, the anti-electricity barrier structure used in mixing valves is typically integrated into the valve body of the mixing valve. This is achieved by designing and processing a curved water channel in the valve body. However, integrating the anti-electricity barrier structure into the valve body complicates the overall valve structure, increasing manufacturing costs, leading to higher maintenance and replacement costs for the mixing valve, and thus increasing the cost of using the water heater.

[0004] Therefore, there is an urgent need for a water mixing valve and a water heater to solve the above technical problems. Utility Model Content

[0005] One of the technical problems solved by the present invention is to provide a water mixing valve, which can effectively solve the problems of complex valve body structure and high processing and maintenance and replacement costs caused by the integration of the anti-electric wall structure of the existing water mixing valve on the valve body, simplify the valve body structure, and improve the assembly efficiency of the water mixing valve.

[0006] The second technical problem solved by the present invention is to provide a water heater, which can effectively solve the problem of increased water heater usage cost caused by the high processing, maintenance and replacement costs of the mixing valve in existing water heaters, reduce the maintenance and replacement costs of the water heater, and improve the disassembly and assembly efficiency of the mixing valve on the water heater.

[0007] The first technical problem mentioned above is solved by the following technical solution:

[0008] A water mixing valve, comprising:

[0009] A valve body, the valve body having a cold water channel, a mixing water chamber and a mixing water channel connected in sequence, the valve body having two spaced-apart joint seats, the joint seat having an installation cavity with one end open, one installation cavity being connected to the cold water channel, and the other installation cavity being connected to the mixing water chamber;

[0010] An anti-electricity wall is provided in a one-to-one correspondence with the connector seat and has an anti-electricity water path inside. The first end of the anti-electricity wall is inserted into the installation cavity. The first end of the anti-electricity water path is connected to the installation cavity and the second end passes through an end surface of the anti-electricity wall away from the valve body. The outer wall of the first end of the anti-electricity wall has a limiting portion;

[0011] The mounting piece is inserted into the connector seat, and the mounting piece partially extends into the mounting cavity and abuts against a side of the limiting portion away from the bottom of the mounting cavity.

[0012] The mixing valve described in the present invention has the following beneficial effects compared with the background technology: since the first end of the anti-electricity wall is inserted into the installation cavity, the anti-electricity wall and the valve body are separated, thereby simplifying the structure of the valve body and reducing the difficulty of processing the valve body, while being conducive to the structural setting and processing of the anti-electricity wall, and at the same time being conducive to the separate modular setting of the anti-electricity wall and the valve body, thereby improving the versatility of the anti-electricity and valve bodies; since the first end of the anti-electricity wall is inserted into the installation cavity and the anti-electricity wall is restricted from escaping from the installation cavity by the installation piece, when assembling the anti-electricity wall, the first end of the anti-electricity wall is first inserted into the installation cavity and then the installation piece is inserted into the valve body, so that the anti-electricity wall can be installed on the valve body, and the anti-electricity wall can be separated from the valve body by pulling the installation piece out of the valve body, so that the installation and disassembly efficiency of the anti-electricity wall is high, thereby improving the assembly efficiency of the mixing valve, and thereby facilitating the maintenance and replacement of the anti-electricity wall and the mixing valve, thereby improving the convenience of use of the mixing valve.

[0013] In one embodiment, the mounting member includes two opposing and spaced-apart insertion rods and a connecting rod connected between the two insertion rods. The insertion rods are inserted into the connector seat and partially extend into the mounting cavity, and the connecting rod is located outside the connector seat. This facilitates the operator to insert and remove the mounting member from the connector seat by gripping the connecting rod, thereby improving the ease of assembly and disassembly of the mounting member.

[0014] In one embodiment, the mixing valve further includes a mounting seal disposed between the anti-electricity barrier and the wall of the mounting cavity, and located between the bottom of the mounting cavity and the stopper. This arrangement prevents water from flowing through the gap between the anti-electricity barrier and the wall of the mounting cavity to reach the rod insertion portion, thereby preventing water from flowing out through the insertion hole in the connector seat, thereby ensuring a better seal.

[0015] In one embodiment, a limiting protrusion is provided on the outer side wall of the anti-electrical wall. The limiting protrusion is located outside the installation cavity and abuts against the end surface of the connector seat.

[0016] In one embodiment, the anti-electricity water path includes a central channel, an inner channel and an outer channel which are separated in sequence from the inside to the outside. The central channel, the inner channel and the outer channel all extend along the length direction of the anti-electricity wall. The outer channel is connected to the installation cavity at one end close to the installation cavity, and the outer channel is connected to the inner channel at one end away from the installation cavity. The inner channel is connected to the central channel at one end close to the installation cavity, and the center channel passes through the second end face of the anti-electricity wall at one end away from the installation cavity.

[0017] In one embodiment, the electric shock barrier comprises:

[0018] an outer cylinder, wherein the first end of the outer cylinder is open and the second end is closed, the open end of the outer cylinder is inserted into the installation cavity and the outer side wall has the limiting portion;

[0019] an inner tube component, spaced apart from the inner circumferential wall of the outer cylinder and having a first end connected to the bottom of the outer cylinder, the inner tube component having a central passage therethrough;

[0020] an inner cylinder having a closed first end and an open second end, the inner cylinder being interposed between the outer cylinder and the inner tube component;

[0021] The outer wall of the inner cylinder and the inner wall of the outer cylinder together form the outer channel, the inner wall of the inner cylinder and the outer wall of the inner tube component together form the inner channel, the open end of the inner cylinder has a first water opening connecting the inner channel and the outer channel, and the second end of the inner tube component has a second water opening connecting the central channel and the inner channel.

[0022] In one embodiment, a water hole communicating with the cold water channel or the water mixing chamber is provided at the bottom of the installation cavity, and a first boss portion is provided on the closed end of the inner cylinder, the first boss portion abuts against the bottom of the installation cavity, and at least two first boss portions are provided at intervals around the water hole;

[0023] And / or, the open end of the inner cylinder is in contact with the bottom of the outer cylinder, and the first water opening is provided on the outer side wall of the inner cylinder;

[0024] And / or, the second end surface of the inner tube component is spaced apart from the bottom of the inner cylinder, and the port of the central channel forms the second water outlet.

[0025] In one of the embodiments, the inner cylinder comprises a main cylinder part with one open end and the other closed end, the outer wall of the main cylinder part is outwardly provided with an outer protruding rib part, the outer protruding rib part extends along the axial direction of the main cylinder part and is spaced apart along the circumferential direction of the main cylinder part with at least two, the outer protruding rib part abuts against the inner wall of the outer cylinder, and the outer channel is formed between the adjacent two outer protruding rib parts;

[0026] And / or, the outer side wall of the inner tube part is outwardly provided with an inner protruding rib part, the inner protruding rib part extends along the axial direction of the inner tube part and is spaced apart along the circumferential direction of the inner tube part with at least two, the inner protruding rib part abuts against the inner wall of the inner cylinder, and the inner channel is formed between the adjacent two inner protruding rib parts;

[0027] And / or, the inner tube part is integrally formed with the outer cylinder.

[0028] In one of the embodiments, the valve body comprises detachably connected cold water connector and hot water connector, the cold water connector has the cold water channel and a connector seat part, and the hot water connector has the mixed water cavity, the mixed water channel and another connector seat part.

[0029] In one of the embodiments, the cold water connector and the hot water connector each comprise in sequence the water inlet and outlet pipe part, the connector seat part and the connector pipe part, the cold water channel extends from the water inlet and outlet pipe part through the connector seat part to the end of the connector pipe part, the mixed water channel is arranged in the water inlet and outlet pipe part of the hot water connector, and the mixed water cavity is arranged in the corresponding connector seat part.

[0030] The mixed water valve further comprises an elastic connecting pipe, two ends of the elastic connecting pipe are respectively detachably connected with the two connector pipe parts.

[0031] In one of the embodiments, the elastic connecting pipe comprises a bellows part and a mounting pipe part connected to both ends of the bellows part.

[0032] The mixed water valve further comprises a fixing sleeve, the fixing sleeve is arranged one by one corresponding to the connector pipe parts, the fixing sleeve is sleeved on the outer side of the connector pipe part and has an inner flange part extending inwardly at one end, the mounting pipe part is pressed between the end face of the connector pipe part and the inner flange part, and an annular connector sealing element is pressed between the mounting pipe part and the connector pipe part.

[0033] In one of the embodiments, the end face of the connector pipe part is provided with a sealing ring groove, the connector sealing element comprises a mounting ring part, the outer peripheral wall of the mounting ring part is outwardly provided with a sealing ring part, the sealing ring part is located in the sealing ring groove and is pressed between the groove bottom of the sealing ring groove and the mounting pipe part, and the mounting ring part extends into the inner cavity of the connector pipe part and / or the inner cavity of the mounting pipe part along the axial direction.

[0034] The second technical problem is solved by the following technical solution:

[0035] A water heater comprising the water mixing valve as described above.

[0036] Compared with the background art, the water heater has the beneficial effects that: by using the water mixing valve, the difficulty of disassembling the water mixing valve on the water heater is reduced, and the maintenance and replacement cost of the parts on the water heater is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 A structure schematic view of the water mixing valve provided by the embodiment one of the present application is shown in the figure;

[0038] Figure 2 A sectional view of the water mixing valve provided by the embodiment one of the present application under a first section plane is shown in the figure;

[0039] Figure 3 A sectional view of the water mixing valve provided by the embodiment one of the present application under a second section plane is shown in the figure; Figure 2 A local enlarged view of the I part in the figure;

[0040] Figure 4 A sectional view of the water mixing valve provided by the embodiment one of the present application under a second section plane is shown in the figure;

[0041] Figure 5 A horizontal sectional schematic view of the electric protection wall provided by the embodiment one of the present application is shown in the figure;

[0042] Figure 6 A structure schematic view of the inner cylinder provided by the embodiment one of the present application is shown in the figure;

[0043] Figure 7 A split structure schematic view of the water mixing valve provided by the embodiment one of the present application is shown in the figure;

[0044] Figure 8 A structure schematic view of the cold water connector provided by the embodiment one of the present application is shown in the figure;

[0045] Figure 9 A structure schematic view of the water mixing valve provided by the embodiment two of the present application is shown in the figure;

[0046] Figure 10 A sectional view of the water mixing valve provided by the embodiment two of the present application is shown in the figure;

[0047] Figure 11 A sectional view of the water mixing valve provided by the embodiment two of the present application is shown in the figure; Figure 10 A local enlarged view of the J part in the figure;

[0048] Figure 12 A sectional view of the connector sealing member provided by the embodiment two of the present application is shown in the figure.

[0049] Explanation of reference numerals:

[0050] 1. Anti-electric wall; 1a. Cold water anti-electric wall; 1b. Hot water anti-electric wall; 11. Outer cylinder; 111. Position-limiting portion; 112. Position-limiting convex portion; 12. Inner tube component; 121. Main tube; 122. Inner convex rib; 13. Inner cylinder; 131. Main tube; 132. Outer convex rib; 133. First boss; 134. Second boss; 135. First water outlet; 14. Anti-electric waterway; 14a. Cold water anti-electric waterway; 14b. Hot water anti-electric waterway; 141. Outer channel; 142. Inner channel; 143. Center channel.

[0051] 2. Valve body; 21. Valve connector; 21a. Cold water connector; 21b. Hot water connector; 211. Water inlet and outlet pipes; 211a. Cold water inlet pipe; 211b. Mixed water outlet pipe; 212. Connector seat; 2121. Mounting cavity; 2122. Connector hole; 2123. Water hole; 213. Connector pipe; 213a. Cold water manifold; 213a1. Limiting slot; 213b. Cold water connecting pipe; 214. Cold water channel; 2141. Cold water inlet channel; 2142, cold water chamber; 2143, cold water diversion channel; 215, mixing water chamber; 216, mixing water channel; 22, elastic connecting pipe; 221, bellows portion; 222, mounting pipe portion; 23, fixing sleeve; 231, screw sleeve portion; 232, inner flange portion; 24, joint sealing member; 241, mounting ring portion; 2411, first ring portion; 2412, second ring portion; 242, sealing ring portion; 25, mounting plug; 26, connecting member;

[0052] 3. Mounting parts; 31. Insertion rod; 32. Connecting rod; 4. Install the sealing part;

[0053] 5. Valve core assembly; 6. Flow detection device; 7. Filter; 8. Temperature detection device. DETAILED DESCRIPTION

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] Example 1

[0059] This embodiment provides a mixing valve, which can be used in an electric water heater to achieve cold water inlet to the inner tank of the electric water heater and hot water supply to the water-using end. At the same time, it can implement an anti-leakage setting to improve the safety of the mixing valve.

[0060] like Figures 1 to 3 As shown, in this embodiment, the mixing valve includes a valve body 2, an electric shock barrier 1, and a valve core assembly 5. The valve body 2 has a cold water channel 214, a mixing water chamber 215, and a mixing water channel 216, which are sequentially connected. The valve body 2 has two spaced-apart connector seats 212, each of which has an open mounting cavity 2121 at one end. One mounting cavity 2121 is connected to the cold water channel 214, and the other mounting cavity 2121 is connected to the mixing water chamber 215. The electric shock barrier 1 is disposed in a one-to-one correspondence with the connector seats 212 and contains an electric shock waterway 14 therein. The first end of the electric shock barrier 1 is inserted into the mounting cavity 2121. The first end of the electric shock waterway 14 is connected to the mounting cavity 2121, and the second end extends through the end surface of the electric shock barrier 1 away from the valve body 2. The valve core assembly 5 is mounted on the valve body 2 and is used to regulate the amount of water entering the mixing water chamber 215 from the cold water channel 214 and the corresponding electric shock waterway 14.

[0061] That is, the anti-electricity water path 14 on one anti-electricity wall 1 forms a cold water anti-electricity water path 14a, and part of the cold water entering from the cold water channel 214 flows out into the inner tank through the cold water anti-electricity water path 14a, and the other part enters the mixing water chamber 215; the anti-electricity water path 14 on the other anti-electricity wall 1 forms a hot water anti-electricity water path 14b, and the hot water in the inner tank enters the mixing water chamber 215 through the hot water anti-electricity water path 14b, thereby realizing the mixing of cold water and hot water in the mixing water chamber 215, and the mixed water flows out of the mixing water valve through the mixing water channel 216 to be supplied to the water use end.

[0062] To facilitate assembly and disassembly of the electric shock barrier 1 from the valve body 2, in this embodiment, the outer sidewall of the first end of the electric shock barrier 1 has a stopper 111. The mixing valve also includes a mounting member 3, which is inserted into the connector seat 212 and partially extends into the mounting cavity 2121 and abuts against the side of the stopper 111 that is away from the bottom of the mounting cavity 2121.

[0063] The mixing valve provided in this embodiment has a first end of the anti-electricity wall 1 inserted into the installation cavity 2121, realizing the separate setting of the anti-electricity wall 1 and the valve body 2, thereby simplifying the structure of the valve body 2 and reducing the difficulty of processing the valve body 2. At the same time, it is beneficial to realize the structural setting and processing of the anti-electricity wall 1, and at the same time, it is beneficial to realize the modular setting of the anti-electricity wall 1 and the valve body 2, thereby improving the versatility of the anti-electricity wall and the valve body 2; since the first end of the anti-electricity wall 1 is inserted into the installation cavity 2121 and the anti-electricity wall 1 is limited by the installation member 3 The installation part 3 is removed from the installation cavity 2121, so that when assembling the anti-electricity wall 1, the first end of the anti-electricity wall 1 is first inserted into the installation cavity 2121 and then the installation part 3 is inserted into the valve body 2, so that the anti-electricity wall 1 can be installed on the valve body 2. The anti-electricity wall 1 can be separated from the valve body 2 by pulling the installation part 3 out of the valve body 2, so that the installation and disassembly efficiency of the anti-electricity wall 1 is high, the assembly efficiency of the water mixing valve is improved, and it is beneficial to realize the maintenance and replacement of the anti-electricity wall 1 and the water mixing valve, and the convenience of using the water mixing valve is improved.

[0064] To facilitate subsequent description, the electric-proof wall 1 connected to the cold water channel 214 will be called the cold water electric-proof wall 1a, and the electric-proof water path 14 in the cold water electric-proof wall 1a will be called the cold water electric-proof water path 14a; the electric-proof wall 1 connected to the mixing water chamber 215 will be called the hot water electric-proof wall 1b, and the electric-proof water path 14 of the hot water electric-proof wall 1b will be called the hot water electric-proof water path 14b.

[0065] like Figures 2 to 4 As shown, in one embodiment, the installation cavity 2121 is a cylindrical cavity structure, and the shape of the first end of the anti-electrical barrier 1 is adapted to the shape of the installation cavity 2121 to improve the installation convenience of the anti-electrical barrier 1 in the installation cavity 2121. A water hole 2123 is formed at the bottom of the installation cavity 2121 to connect to the corresponding cold water channel 214 or mixing water chamber 215.

[0066] In one embodiment, the mounting member 3 includes two opposing and spaced-apart insertion rods 31 and a connecting rod 32 connected between the two insertion rods 31. The insertion rod 31 is inserted into the connector seat 212 and partially extends into the mounting cavity 2121. The connecting rod 32 is located outside the connector seat 212, making it easier for an operator to insert and remove the mounting member 3 from the connector seat 212 by gripping the connecting rod 32, thereby improving the ease of assembly and disassembly of the mounting member 3. The connector seat 212 is provided with an insertion hole 2122 for inserting the insertion rod 31.

[0067] In one embodiment, one end of the insertion rod portion 31 away from the connecting rod portion 32 passes through the joint seat portion 212 and extends out of the joint seat portion 212 to increase the contact area between the insertion rod portion 31 and the valve body 2, thereby reducing the probability of the insertion rod portion 31 falling out of the valve body 2 and improving the installation stability and reliability of the mounting member 3 on the valve body 2.

[0068] The connecting rod portion 32 and the two insertion rod portions 31 are connected to form a U-shaped structure. The plane of the mounting member 3 is perpendicular to the axial direction of the mounting cavity 2121 to ensure the convenience of inserting the insertion rod portion 31 into the joint seat portion 212.

[0069] To limit the depth of insertion of the electric shock barrier 1 into the mounting cavity 2121, a limiting protrusion 112 is provided on the outer sidewall of the electric shock barrier 1. The limiting protrusion 112 abuts against the end surface of the connector seat 212, thereby limiting further insertion of the electric shock barrier 1 into the mounting cavity 2121. The insertion rod portion 31 is located between the limiting protrusion 111 and the limiting protrusion 112.

[0070] To ensure sealed communication between cavity 2121 and anti-electricity waterway 14 after the anti-electricity barrier 1 is inserted into cavity 2121, the mixing valve includes a mounting seal 4, which is positioned between the anti-electricity barrier 1 and the cavity wall of cavity 2121. Furthermore, the mounting seal 4 is located between the cavity bottom of cavity 2121 and the stopper 111. This arrangement prevents water within cavity 2121 from flowing through the gap between the anti-electricity barrier 1 and the cavity wall of cavity 2121 to reach the rod insertion portion 31, thereby preventing water from escaping through the insertion hole 2122 in the connector seat 212, thus ensuring a more secure seal.

[0071] To ensure a tight seal when the electric shock barrier 1 is assembled to the valve body 2, at least two mounting seals 4 are spaced apart along the extension of the electric shock barrier 1 to achieve a multi-stage seal, thereby ensuring a reliable seal. Preferably, the outer diameter of the mounting seal 4 gradually decreases as it moves away from the retaining protrusion 112. This not only achieves a multi-stage seal, but also facilitates the insertion of the electric shock barrier 1 and the mounting seals 4 mounted thereon into the mounting cavity 2121, further improving the efficiency of assembly and disassembly of the electric shock barrier 1. In other embodiments, the outer diameters of all mounting seals 4 may be equal.

[0072] Specifically, the outer wall of the first end of the electric-proof wall 1 is provided with a first sealing groove and a second sealing groove that are connected. The inner diameter of the first sealing groove is smaller than that of the second sealing groove, and the first sealing groove extends through the first end surface of the electric-proof wall 1. The wall of the mounting cavity 2121 is provided with two limiting step surfaces, one of which is opposite and spaced from the bottom of the first sealing groove, and the other of which is opposite and spaced from the bottom of the second sealing groove. One mounting seal 4 is located between the bottom of the first sealing groove and the corresponding limiting step surface, and the other mounting seal 4 is located between the bottom of the second sealing groove and the corresponding limiting step surface.

[0073] In one embodiment, the anti-electricity water path 14 includes a central channel 143, an inner channel 142 and an outer channel 141 which are separated from the inside to the outside. The central channel 143, the inner channel 142 and the outer channel 141 all extend along the length direction of the anti-electricity wall 1. The end of the outer channel 141 close to the installation cavity 2121 is connected to the installation cavity 2121, the end of the outer channel 141 away from the installation cavity 2121 is connected to the inner channel 142, the end of the inner channel 142 close to the installation cavity 2121 is connected to the central channel 143, and the end of the central channel 143 away from the installation cavity 2121 passes through the second end face of the anti-electricity wall 1.

[0074] Taking the cold water electric shock barrier 1a as an example, the first end of the outer channel 141 forms the water inlet, and the end of the central channel 143 away from the mounting cavity 2121 forms the water outlet. Water entering the electric shock barrier 1 through the water inlet first flows through the outer channel 141 along the length of the electric shock barrier 1 to the second end of the outer channel 141 and into the inner channel 142. Water entering the inner channel 142 then flows along the length of the electric shock barrier 1 to the end of the inner channel 142 near the mounting cavity 2121 and into the central channel 143. Water entering the central channel 143 then flows along the length of the electric shock barrier 1 to the water outlet. That is, the structural setting of this type of electric shock wall 1 allows the water flow from the water inlet to the water outlet and then undergoes secondary bending and reversing flow, and its flow path is roughly equal to three times the length of the electric shock wall 1. Therefore, on the basis of keeping the length of the electric shock wall 1 unchanged, the path length of the electric shock water path 14 can be effectively increased, thereby increasing the resistance of the electric shock water path 14, improving the anti-leakage effect, and reducing the overall length of the electric shock wall 1, thereby improving the installation convenience of the mixing valve on the water heater body.

[0075] In order to improve the processing convenience of the electric wall 1, in one embodiment, as Figures 3 to 6As shown, the anti-electricity wall 1 comprises an outer cylinder 11, an inner cylinder 13 and an inner tube part 12. The outer cylinder 11 has an outer cavity with a first open end and a second closed end, the open end of the outer cylinder 11 is inserted into the installation cavity 2121 and the outer side wall has the limiting part 111 and the limiting ring part as described above; the inner tube part 12 is arranged spaced apart from the inner peripheral wall of the outer cylinder 11 and connected to the cylinder bottom of the outer cylinder 11 at the first end, the inner tube part 12 has a through central passage 143; the inner cylinder 13 has a first closed end and a second open end, the inner cylinder 13 is inserted between the outer cylinder 11 and the inner tube part 12; the outer side wall of the inner cylinder 13 and the inner side wall of the outer cylinder 11 jointly form an outer passage 141, the inner side wall of the inner cylinder 13 and the outer side wall of the inner tube part 12 jointly form an inner passage 142, the open end of the inner cylinder 13 has a first water passage 135 which communicates the inner passage 142 and the outer passage 141, and the second end of the inner tube part 12 has a second water passage which communicates the central passage 143 and the inner passage 142.

[0076] In an embodiment, the inner tube part 12 is integrally formed with the outer cylinder 11, so as to reduce the assembly process of the anti-electricity wall 1 and improve the assembly efficiency of the anti-electricity wall 1. In other embodiments, the inner tube part 12 and the outer cylinder 11 can be separately arranged and welded or detachably connected. Further, the inner tube part 12 and the outer cylinder 11 are coaxially arranged, so as to improve the uniformity of water flow in the circumferential direction of the anti-electricity wall 1.

[0077] The end face of the open end of the outer cylinder 11 abuts against the cavity bottom of the installation cavity 2121, so as to limit the shaking of the anti-electricity wall 1 along the extending direction thereof by the cavity bottom of the installation cavity 2121 and the mounting member 3. The water passage hole 2123 is located inside the open end of the outer cylinder 11, so as to ensure the smoothness of water flow in the water passage hole 2123 and the installation cavity 2121.

[0078] In an embodiment, the closed end of the inner cylinder 13 is provided with a first boss part 133, the first boss part 133 abuts against the cavity bottom of the installation cavity 2121, and at least two first boss parts 133 are arranged spaced apart around the water passage hole 2123. That is, the end face of the closed end of the inner cylinder 13 is arranged spaced apart from the cavity bottom of the installation cavity 2121, so as to avoid that the end face of the closed end of the inner cylinder 13 blocks the water passage hole 2123; the arrangement of the first boss part 133 can ensure that one end of the inner cylinder 13 abuts against the cavity bottom of the installation cavity 2121, so as to avoid the shaking of the inner cylinder 13 relative to the outer cylinder 11 in the axial direction, and since at least two first boss parts 133 are arranged spaced apart around the water passage hole 2123, the water flow can flow between the water passage hole 2123 and the outer passage 141 through the gap between the adjacent two first boss parts 133. Further, the open end of the inner cylinder 13 abuts against the cylinder bottom of the outer cylinder 11.

[0079] To improve the setting stability and convenience of the inner cylinder 13, the inner cylinder 13 comprises a main cylinder part 131, the first end of which is open and the second end of which is closed, the main cylinder part 131 is arranged in a spaced manner with the inner wall of the outer cylinder 11, and the end of the closed end of the main cylinder part 131 is provided with a first boss part 133. The outer side wall of the main cylinder part 131 is outwardly provided with an outer protruding rib part 132, the outer protruding rib part 132 extends along the length direction of the main cylinder part 131 and is arranged in a spaced manner along the circumference direction of the main cylinder part 131, there are at least two outer protruding rib parts 132, the outer side wall of the outer protruding rib part 132 is in contact with the inner side wall of the outer cylinder 11, and the inner side wall of the outer cylinder 11, the main cylinder part 131 and the adjacent two outer protruding rib parts 132 jointly form an outer channel 141, and the outer channel 141 is arranged in a spaced manner along the circumference direction of the main cylinder part 131. Through the abutment of the outer protruding rib part 132 and the inner side wall of the outer cylinder 11, the installation and positioning of the inner cylinder 13 in the radial direction of the outer cylinder 11 can be realized, the shaking of the inner cylinder 13 in the radial direction inside the outer cylinder 11 is avoided, and the structural stability and reliability of the electrically shielded wall 1 are better ensured.

[0080] In an embodiment, the first water passage 135 is arranged in a one-to-one correspondence with the outer channel 141, so as to better ensure the smoothness of the water flow. Further, the open end face of the main cylinder part 131 is provided with a second boss part 134, the second boss part 134 is in abutment with the cylinder bottom of the outer cylinder 11, a plurality of second boss parts 134 are arranged in a spaced manner along the circumference direction of the main cylinder part 131, and the second boss part 134 is arranged in a one-to-one correspondence with the outer protruding rib part 132, and a first water passage 135 is formed between the adjacent two second boss parts 134.

[0081] In an embodiment, the inner pipe part 12 comprises a main pipe part 121, the main pipe part 121 is arranged in a spaced manner with the inner circumferential wall of the inner cylinder 13, the outer side wall of the main pipe part 121 is provided with an inner protruding rib part 122, the inner protruding rib part 122 is in abutment with the inner side wall of the inner cylinder 13, and a plurality of inner protruding rib parts 122 are arranged in a spaced manner along the circumference direction of the inner pipe part 12, so that an inner channel 142 is formed between the adjacent two inner protruding rib parts 122. The inner channel 142 is arranged in a one-to-one correspondence with the outer channel 141, so as to ensure the stability of the water flow, and at the same time, the setting stability of the inner cylinder 13 inside the outer cylinder 11 can be improved.

[0082] To simplify the structure, in an embodiment, the inner pipe part 12 is arranged in a spaced manner with the cylinder bottom of the inner cylinder 13, so that the second end of the inner pipe part 12 is open to form a second water passage. In other embodiments, the second end face of the inner pipe part 12 can be in abutment with the cylinder bottom of the inner cylinder 13, and the second water passage is formed on the side wall of the inner pipe part 12.

[0083] As Figure 2 and Figure 3As shown, in an embodiment, the cold water channel 214 comprises a cold water inlet channel 2141, a water storage cavity and a cold water diversion channel 2143 connected in sequence, the cold water inlet channel 2141 and the cold water diversion channel 2143 are arranged at an angle, and one end of the cold water inlet channel 2141 away from the cold water cavity 2142 penetrates the valve body 2 to form a cold water inlet; one end of the cold water diversion channel 2143 away from the cold water cavity 2142 is in communication with the mixed water cavity 215. The cold water cavity 2142 is in communication with the cold water electric resistance channel 14a, and the hot water electric prevention wall 1b is arranged at an angle with the cold water inlet channel 2141 and the cold water diversion channel 2143. This kind of arrangement is beneficial to the installation of the mixed water valve on the inner container and the connection with the cold water pipeline.

[0084] Specifically, the cold water inlet channel 2141, the cold water diversion channel 2143 and the electric prevention wall 1 are perpendicular to each other in pairs. The installation cavity 2121 and the cold water cavity 2142 are arranged separately along the extension direction of the electric prevention wall 1, and the water passage hole 2123 connects the installation cavity 2121 and the cold water cavity 2142.

[0085] To avoid impurities in the cold water entering the cold water electric prevention wall 1a and the mixed water cavity 215, in an embodiment, a filter screen 7 is arranged in the cold water cavity 2142, the filter screen 7 divides the cold water cavity 2142 into a raw water cavity and a filter cavity, wherein the filter cavity is located on the inner side of the filter screen 7, the raw water cavity is located between the filter screen 7 and the cavity wall of the cold water cavity 2142, the water outlet end of the cold water inlet channel 2141 is in communication with the raw water cavity, and the water passage hole 2123 and the water inlet end of the cold water diversion channel 2143 are both in communication with the filter cavity. Thus, the impurities in the water can be filtered by the filter screen 7.

[0086] The joint seat part 212 is provided with a mounting opening on the side away from the cold water electric prevention wall 1a, and the filter screen 7 is disassembled and assembled in the cold water cavity 2142 through the mounting opening. The valve body 2 further comprises a mounting plug 25, which is detachably connected with the joint seat part 212 to realize the disassembly, cleaning and replacement of the filter screen 7. It is worth noting that the mounting structure of the filter screen 7 on the valve body 2 and the specific structure of the mounting plug 25 can be arranged according to the prior art, which is not the focus of the present application, and will not be described in detail.

[0087] As shown in the drawings, Figure 1 , Figure 4 and Figure 7As shown, in one embodiment, the valve body 2 includes two detachably connected valve connectors 21, namely a cold water connector 21a and a hot water connector 21b. The cold water connector 21a is provided with a cold water inlet channel 2141 and a connector seat 212, while the hot water connector 21b is provided with a mixing water channel 216, a mixing water chamber 215, and another connector seat 212. The valve core assembly 5 is mounted on the hot water connector 21b. By configuring the valve body 2 as a cold water connector 21a and a hot water connector 21b, the manufacturing difficulty of the valve body 2 can be reduced, thereby reducing costs. It also facilitates the modularization of the cold water connector 21a and the hot water modularization including the hot water connector 21b and the valve core assembly 5, reducing the maintenance and replacement costs of various components of the valve body 2.

[0088] To improve the connection convenience of the cold water connector 21a and the hot water connector 21b, each valve connector 21 includes an inlet and outlet pipe portion 211, a connector seat portion 212, and a connector pipe portion 213, which are connected in sequence. The inlet and outlet pipe portions 211 of the two valve connectors 21 are arranged parallel and spaced apart, and the connector pipe portions 213 of the two valve connectors 21 are detachably connected. The connector pipe portion 213 is arranged at an angle to the inlet and outlet pipe portions 211.

[0089] The cold water channel 214 extends from one end of the water inlet and outlet pipes 211 through the connector base 212 to the end of the connector pipe 213. For ease of description, the water inlet and outlet pipes 211 of the cold water connector 21a are referred to as the cold water inlet pipe 211a, and the connector pipe 213 of the cold water connector 21a is referred to as the cold water diversion pipe 213a. The inner cavity of the cold water inlet pipe 211a forms the cold water inlet channel 2141, and the inner cavity of the cold water diversion pipe 213a forms the cold water diversion channel 2143. The water inlet and outlet pipes 211 of the hot water connector 21b are referred to as the mixed water outlet pipe 211b, and the connector pipe 213 of the hot water connector 21b is referred to as the cold water connecting pipe 213b. The inner cavity of the mixed water outlet pipe 211b forms the mixed water channel 216, and the inner cavity of the cold water connecting pipe 213b connects the cold water channel 214 with the mixing water chamber 215.

[0090] In this embodiment, the water outlet end of the cold water diverter pipe 213a is sealed and inserted into the cold water connecting pipe 213b, so that the cold water connector 21a and the hot water connector 21b are directly connected, which is beneficial to reducing the parts of the mixing valve and improving assembly efficiency.

[0091] like Figure 4 、 Figure 7 and Figure 8As shown, in order to improve the efficiency of disassembly and assembly of the cold water connector 21a and the hot water connector 21b, the mixing valve also includes a connecting member 26, which includes two connecting rod portions 32 arranged opposite to each other and spaced apart; the outer wall of the water outlet end of the cold water diverter pipe portion 213a is provided with two limiting slots 213a1, and the two limiting slots 213a1 are arranged opposite to each other; the connecting rod portion 32 passes through the cold water connecting pipe portion 213b and partially extends into the limiting slots 213a1, and the connecting rod portion 32 limits the cold water diverter pipe portion 213a from moving in a direction away from the hot water connector 21b, so as to prevent the cold water diverter pipe portion 213a from falling out of the cold water connecting pipe portion 213b. The detachable connection between the cold water connector 21a and the hot water connector 21b is achieved by inserting the connecting piece 26 into the cold water connecting pipe portion 213b, which can improve the disassembly and assembly efficiency of the valve body 2 and the mixing valve; at the same time, this connection method can effectively limit the relative rotation between the cold water diversion pipe portion 213a and the cold water connecting pipe portion 213b, thereby better ensuring the relative position reliability of the cold water connector 21a and the hot water connector 21b after assembly, and ensuring the assembly accuracy of the mixing valve.

[0092] The connecting member 26 further includes a crossbar portion connected between the two connecting rod portions 32 . The crossbar portion is located outside the valve body 2 to facilitate insertion and removal of the connecting member 26 on the joint connecting pipe portion.

[0093] To ensure a sealed connection between the cold water diverter pipe portion 213a and the cold water connecting pipe portion 213b, a joint seal 24 is further provided between the cold water diverter pipe portion 213a and the cold water connecting pipe portion 213b. The joint seal 24 is located on the side of the connector 26 facing the water mixing chamber 215 and is squeezed between the outer wall of the cold water diverter pipe portion 213a and the inner wall of the cold water connecting channel to achieve a seal at the connection between the two. Preferably, at least two joint seals 24 are provided at intervals along the extension direction of the joint pipe portion 213 to better ensure a sealing effect after the connection.

[0094] In one embodiment, a flow rate detection device 6 is mounted on the mixed water outlet pipe 211b of the hot water connector 21b to detect the outflow rate of the mixed water channel 216. Temperature detection devices 8 are also mounted on both the mixed water outlet pipe 211b and the cold water inlet pipe 211a to detect the inlet temperature of the cold water and the outlet temperature of the mixed water, respectively. The mounting structures of the flow rate detection device 6 and the temperature detection device 8 on the valve body 2 can be configured in accordance with existing techniques. This is not the focus of the present invention and will not be further described.

[0095] This embodiment also provides a water heater including the aforementioned mixing valve. The water heater includes an inner tank, which is provided with two mounting brackets. Two anti-electrical barriers 1 are mounted on the mounting brackets, respectively. The anti-electrical water path 14 communicates with the inner cavity of the inner tank. By utilizing the aforementioned mixing valve, the water heater provided in this embodiment can reduce the difficulty of disassembly and assembly of the mixing valve on the water heater, thereby reducing the cost of repairing and replacing components on the water heater.

[0096] The installation structure of the mixing valve and the inner tank can be set with reference to the existing technology. This is not the focus of the present invention and will not be described in detail here.

[0097] Example 2

[0098] This embodiment provides a water mixing valve and a water heater including the same. The water mixing valve provided in this embodiment has the same basic structure as the water mixing valve provided in Example 1, with only some differences in configuration. This embodiment will not further describe the same structures as in Example 1.

[0099] like Figures 9 to 12 As shown, in this embodiment, the valve body 2 further includes an elastic connecting tube 22, the ends of which are detachably connected to the two joint pipe portions 213. Specifically, one end of the elastic connecting tube 22 is detachably connected to the cold water joint 21a, and the second end of the elastic connecting tube 22 is detachably connected to the hot water joint 21b. The inner cavity of the elastic connecting tube 22 forms a connecting passage, which seals and connects the cold water passage 214 and the mixing chamber 215. By providing the elastic connecting tube 22 to connect the hot water joint 21b and the cold water joint 21a, the spacing between the two electric shock barriers 1 can be adjusted, thereby preventing any mismatch between the spacing between the two electric shock barriers 1 and the spacing between the two mounting openings on the inner tank due to manufacturing or assembly errors, thereby better ensuring the reliable and smooth installation of the mixing valve on the body.

[0100] To facilitate connection between the elastic connecting tube 22 and the two joint pipe sections 213, the elastic connecting tube 22 includes a bellows section 221 and mounting tube sections 222 connected to both ends of the bellows section 221. The mixing valve also includes a fixing sleeve 23, which corresponds to each joint pipe section 213. An inner flange 232 extends inward from one end of the fixing sleeve 23. The fixing sleeve 23 is threaded onto the outer side of the corresponding joint pipe section 213. The mounting tube section 222 is pressed between the end surface of the joint pipe section 213 and the inner flange 232. An annular joint seal 24 is pressed between the mounting tube section 222 and the joint pipe section 213.

[0101] That is, in this embodiment, by providing the fixing sleeve 23, the fixing sleeve 23 and the joint pipe portion 213 can be threadedly connected to each other, so that the mounting pipe portion 222 can be pressed between the inner flange portion 232 of the fixing sleeve 23 and the end face of the joint pipe portion 213, thereby achieving the installation and fixation of the elastic connecting pipe 22 and the joint pipe portion 213, and avoiding the problem that the mounting pipe portion 222 is difficult to be directly fastened to the joint pipe portion 213 due to its low structural strength and rigidity, thereby improving the installation convenience and installation reliability of the elastic connecting pipe 22 on the joint pipe portion 213; by providing the joint sealing ring, the sealing of the joint pipe portion 213 and the elastic connecting pipe 22 after connection can be ensured.

[0102] The fixing sleeve 23 includes a screw sleeve portion 231, the inner side wall of which is provided with an internal thread, and the outer side wall of the joint pipe portion 213 is provided with an external thread, and the internal thread and the external thread are screwed together. An inner flange portion 232 is extended inward from one end of the screw sleeve portion 231 away from the joint pipe portion 213, and the inner diameter of the inner flange portion 232 is larger than the outer diameter of the mounting pipe portion 222, and the outer diameter of the mounting pipe portion 222 is larger than the inner diameter of the joint pipe portion 213, so that the mounting pipe portion 222 is pressed between the inner flange portion 232 and the end face of the joint pipe portion 213. This connection method of the fixing sleeve 23 and the joint pipe portion 213 is simple in structure and reliable in installation. By adjusting the matching length of the screw sleeve portion 231 and the joint pipe portion 213, the mounting pipe portion 222 can be stably and reliably pressed between the inner flange portion 232 and the end face of the joint pipe portion 213.

[0103] Furthermore, a sealing ring groove is provided on the end face of the joint pipe portion 213, and the joint seal 24 includes a mounting ring portion 241, and a sealing ring portion 242 is protruding outward from the outer peripheral wall of the mounting ring portion 241. The sealing ring portion 242 is located in the sealing ring groove and is pressed between the bottom of the sealing ring groove and the mounting pipe portion 222. The mounting ring portion 241 extends axially into the inner cavity of the joint pipe portion 213 and / or the inner cavity of the mounting pipe portion 222.

[0104] By providing a sealing ring groove to accommodate the sealing ring portion 242, the degree to which the mounting tube portion 222 squeezes the sealing ring portion 242 can be limited, thereby preventing the sealing ring portion 242 from being squeezed too much and causing damage; at the same time, the mounting ring portion 241 extends axially into the inner cavity of the joint tube portion 213 and / or the inner cavity of the mounting tube portion 222, thereby preventing the joint seal 24 from being deformed and causing water leakage, ensuring that the compression area of ​​the sealing ring portion 242 will not be reduced, and ensuring the sealing effect of the joint seal 24.

[0105] To better ensure the sealing effect of the joint seal 24, both ends of the mounting ring portion 241 along the axial direction extend relative to the sealing ring portion 242 to further reduce the probability of deformation of the joint seal 24 and increase the service life of the joint seal 24. In this embodiment, the mounting ring portion 241 includes a first ring portion 2411 and a second ring portion 2412 located on opposite sides of the sealing ring portion 242, respectively. The first ring portion 2411 extends into the inner cavity of the joint pipe portion 213, and the second ring portion 2412 extends into the inner cavity of the mounting pipe portion 222. The inner diameter of the mounting pipe portion 222 is smaller than the inner diameter of the joint pipe portion 213, and the outer diameter of the first ring portion 2411 is larger than the inner diameter of the second ring portion 2412, so that the first ring portion 2411 can be loosely matched with the mounting pipe portion 222, while the second ring portion 2412 is loosely matched with the inner cavity of the joint pipe portion 213, thereby better ensuring the installation and sealing reliability of the joint seal 24.

[0106] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned 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.

[0107] 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 water mixing valve, characterized in that: include: A valve body (2), the valve body (2) having a cold water channel (214), a water mixing chamber (215), and a water mixing chamber (216) that are connected in sequence, the valve body (2) having two joint seats (212) spaced apart, the joint seat (212) having a mounting chamber (2121) with one end open, one mounting chamber (2121) being connected to the cold water channel (214), and the other mounting chamber (2121) being connected to the water mixing chamber (215); An anti-electricity wall (1) is provided in one-to-one correspondence with the connector seat (212) and has an anti-electricity water path (14) inside. The first end of the anti-electricity wall (1) is inserted into the installation cavity (2121). The first end of the anti-electricity water path (14) is connected to the installation cavity (2121) and the second end passes through an end surface of the anti-electricity wall (1) away from the valve body (2). The outer side wall of the first end of the anti-electricity wall (1) has a limiting portion (111); The mounting member (3) is inserted into the connector seat (212), and a portion of the mounting member (3) extends into the mounting cavity (2121) and abuts against a side of the limiting portion (111) away from the bottom of the mounting cavity (2121).

2. The water mixing valve according to claim 1, characterized in that: The mounting member (3) comprises two insertion rod portions (31) that are arranged opposite to each other and spaced apart, and a connecting rod portion (32) connected between the two insertion rod portions (31); the insertion rod portion (31) is inserted into the joint seat portion (212) and partially extends into the mounting cavity (2121); and the connecting rod portion (32) is located outside the joint seat portion (212).

3. The water mixing valve according to claim 1, characterized in that: The water mixing valve further comprises an installation seal (4), wherein the installation seal (4) is arranged between the anti-electrical wall (1) and the cavity wall of the installation cavity (2121), and the installation seal (4) is located between the cavity bottom of the installation cavity (2121) and the limiting portion (111).

4. The water mixing valve according to claim 1, characterized in that: The outer side wall of the anti-electrical wall (1) is provided with a limiting protrusion (112), and the limiting protrusion (112) is located outside the installation cavity (2121) and abuts against the end surface of the connector seat (212).

5. The water mixing valve according to claim 1, characterized in that: The anti-electricity water path (14) comprises a central channel (143), an inner channel (142) and an outer channel (141) which are sequentially separated from the inside to the outside. The central channel (143), the inner channel (142) and the outer channel (141) all extend along the length direction of the anti-electricity wall (1). The end of the outer channel (141) close to the installation cavity (2121) is connected to the installation cavity (2121), the end of the outer channel (141) away from the installation cavity (2121) is connected to the inner channel (142), the end of the inner channel (142) close to the installation cavity (2121) is connected to the central channel (143), and the end of the central channel (143) away from the installation cavity (2121) passes through the second end face of the anti-electricity wall (1).

6. The water mixing valve according to claim 5, characterized in that: The anti-electricity wall (1) comprises: an outer cylinder (11), wherein the first end of the outer cylinder (11) is open and the second end is closed, the open end of the outer cylinder (11) is inserted into the installation cavity (2121) and the outer side wall has the limiting portion (111); an inner tube component (12) spaced apart from the inner peripheral wall of the outer cylinder (11) and having a first end connected to the bottom of the outer cylinder (11), the inner tube component (12) having a central channel (143) therethrough; an inner cylinder (13) having a closed first end and an open second end, the inner cylinder (13) being inserted between the outer cylinder (11) and the inner tube component (12); The outer wall of the inner cylinder (13) and the inner wall of the outer cylinder (11) are combined to form the outer channel (141), and the inner wall of the inner cylinder (13) and the outer wall of the inner tube component (12) are combined to form the inner channel (142). The open end of the inner cylinder (13) has a first water opening (135) communicating with the inner channel (142) and the outer channel (141), and the second end of the inner tube component (12) has a second water opening communicating with the central channel (143) and the inner channel (142).

7. The water mixing valve according to claim 6, characterized in that: The bottom of the installation cavity (2121) is provided with a water hole (2123) communicating with the cold water channel (214) or the water mixing cavity (215); the closed end of the inner cylinder (13) is provided with a first boss portion (133), the first boss portion (133) abuts against the bottom of the installation cavity (2121), and at least two first boss portions (133) are provided around the water hole (2123) at intervals; And / or, the open end of the inner cylinder (13) abuts against the bottom of the outer cylinder (11), and the first water opening (135) is provided on the outer side wall of the inner cylinder (13); And / or, the second end surface of the inner tube component (12) is spaced apart from the bottom of the inner cylinder (13), and the port of the central channel (143) forms the second water outlet.

8. The water mixing valve according to claim 6, characterized in that: The inner cylinder (13) comprises a main cylinder portion (131) with one end open and the other end closed, an outer wall of the main cylinder portion (131) is provided with an outer convex rib portion (132) protruding outward, the outer convex rib portion (132) extending along the axial direction of the main cylinder portion (131) and at least two outer convex rib portions (132) are provided at intervals along the circumference of the main cylinder portion (131), the outer convex rib portions (132) abut against the inner wall of the outer cylinder (11), and the outer channel (141) is provided between two adjacent outer convex rib portions (132); And / or, the outer side wall of the inner tube component (12) is provided with an inner convex rib (122) protruding outward, the inner convex rib (122) extends along the axial direction of the inner tube component (12) and at least two inner convex ribs (122) are provided at intervals along the circumference of the inner tube component (12), the inner convex ribs (122) abut against the inner wall of the inner cylinder (13), and the inner channel (142) is formed between two adjacent inner convex ribs (122); And / or, the inner tube component (12) and the outer cylinder (11) are integrally formed.

9. The water mixing valve according to any one of claims 1 to 8, characterized in that: The valve body (2) comprises a detachably connected cold water joint (21a) and a hot water joint (21b), wherein the cold water joint (21a) comprises the cold water channel (214) and a joint seat (212), and the hot water joint (21b) comprises the water mixing chamber (215), the water mixing channel (216) and another joint seat (212).

10. The water mixing valve according to claim 9, characterized in that: The cold water joint (21a) and the hot water joint (21b) both comprise an inlet and outlet water pipe portion (211), a joint seat portion (212), and a joint pipe portion (213) connected in sequence; the cold water channel (214) extends from the inlet and outlet water pipe portion (211) through the joint seat portion (212) to the end of the joint pipe portion (213); the water mixing channel (216) is provided on the inlet and outlet water pipe portion (211) of the hot water joint (21b); and the water mixing chamber (215) is provided corresponding to the joint seat portion (212); The water mixing valve further comprises an elastic connecting pipe (22), and both ends of the elastic connecting pipe (22) are detachably connected to the two joint pipe parts (213) respectively.

11. The water mixing valve according to claim 10, characterized in that: The elastic connecting tube (22) comprises a bellows portion (221) and mounting tube portions (222) connected to both ends of the bellows portion (221); The water mixing valve further comprises a fixing sleeve (23), the fixing sleeve (23) being arranged in one-to-one correspondence with the joint pipe portion (213), the fixing sleeve (23) being sleeved on the outer side of the joint pipe portion (213) and having an inner flange portion (232) extending inward at one end thereof, the mounting pipe portion (222) being pressed between the end surface of the joint pipe portion (213) and the inner flange portion (232), and an annular joint sealing member (24) being pressed between the mounting pipe portion (222) and the joint pipe portion (213).

12. The water mixing valve according to claim 11, characterized in that: The end surface of the joint pipe portion (213) is provided with a sealing ring groove, and the joint seal (24) includes a mounting ring portion (241). The outer peripheral wall of the mounting ring portion (241) is provided with a sealing ring portion (242) protruding outward, and the sealing ring portion (242) is located in the sealing ring groove and pressed between the groove bottom of the sealing ring groove and the mounting pipe portion (222). The mounting ring portion (241) extends axially into the inner cavity of the joint pipe portion (213) and / or the inner cavity of the mounting pipe portion (222).

13. A water heater, characterized in that: It comprises a water mixing valve as described in any one of claims 1-12.

Images