Three-way valve assembly and gas water heater

Abstract

The present application relates to hot water supply equipment, and discloses a three-way valve assembly and a gas water heater. The three-way valve assembly comprises a valve body and solenoid valves. The valve body is internally provided with a water inlet channel, a bypass channel, and at least two water diversion chambers. Two ends of the water inlet channel respectively form a water inlet and a water outlet. Each water diversion chamber is in communication with the water inlet channel. Each water diversion chamber is internally provided with a communication port, and each water diversion chamber is in communication with the bypass channel via the corresponding communication port. The solenoid valves are arranged in one-to-one correspondence with the water diversion chambers, and are used for controlling opening and closing of the corresponding communication ports. In the present application, the solenoid valves are controlled to close the respective communication ports of the water diversion chambers, such that after water from an external water inlet pipe enters the water inlet channel via the water inlet, all water flow within the water inlet channel flows out through the water outlet. At this time, the water flow within the water inlet channel cannot enter the bypass channel through the communication ports of the water diversion chambers, thereby achieving complete closure of the bypass channel and ensuring the constant-temperature performance of the gas water heater.

Description

Three-way valve assembly and gas water heater

[0001] This application claims priority to Chinese Patent Application No. 2024230501179, filed on December 11, 2024, entitled “Three-way valve assembly and gas water heater”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of hot water supply equipment technology, and in particular to a three-way valve assembly and a gas water heater. Background Technology

[0003] Gas water heaters can be divided into models without a bypass pipe and models with a bypass pipe. Models with a bypass pipe mix cold water at the hot water outlet through a bypass pipe to ensure a constant temperature of the hot water and effectively prevent the outlet water temperature from becoming too high due to repeated start-ups and shutdowns of the gas water heater.

[0004] However, existing three-way valves cannot completely close the bypass pipe, and when the water environment (such as water temperature and water pressure) fluctuates, it affects the constant temperature effect of the outlet water to some extent. Summary of the Invention

[0005] The first technical problem solved by this application is to provide a three-way valve assembly that effectively solves the problem that existing three-way valves cannot completely close the bypass pipe, while improving the constant temperature performance of gas water heaters.

[0006] The second technical problem addressed by this application is to provide a gas water heater that effectively solves the problem that existing gas water heaters cannot completely shut off the bypass pipe, while also improving the constant temperature performance of the gas water heater.

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

[0008] A three-way valve assembly, comprising:

[0009] The valve body has an inlet channel, a bypass channel and at least two water distribution chambers. The two ends of the inlet channel form an inlet and an outlet, respectively. Each water distribution chamber is connected to the inlet channel and has a connecting port. Each water distribution chamber is connected to the bypass channel through the corresponding connecting port. One end of the bypass channel is closed and the other end forms a bypass outlet.

[0010] Solenoid valves are provided one-to-one with the water distribution chambers to control the opening and closing of the corresponding connecting ports.

[0011] Compared with the prior art, the three-way valve assembly described in this application has the following advantages: Taking a gas water heater as an example, the outlet of the three-way valve assembly is connected to the water tank of the gas water heater, the inlet is connected to the external water inlet pipe, and the bypass outlet is connected to the bypass pipe inside the gas water heater. When the bypass mixing function is required, the solenoid valve is controlled to open the corresponding connection port, and the water flow from the external water inlet pipe enters the water inlet channel from the inlet. Among them, part of the water flow flows out from the outlet along the water inlet channel, and the other part of the water flow flows into the corresponding water distribution chamber from the water inlet channel. Since the connection port of the water distribution chamber is in the open state, the water flow in the water distribution chamber flows into the bypass channel through the connection port and flows out from the bypass outlet along the bypass channel, realizing bypass mixing.

[0012] Meanwhile, since the valve body has at least two water distribution chambers, different flow rates of water can be controlled by opening and closing different numbers of connecting ports through the solenoid valve, thereby achieving the adjustment of the bypass mixing flow rate. This can effectively improve the constant water temperature effect of the gas water heater in application scenarios such as fluctuations in the water environment and secondary start-up and shutdown of the gas water heater, thus improving the constant temperature performance of the gas water heater.

[0013] When the bypass mixing function is not needed, the solenoid valve can be controlled to close the connection port of each water distribution chamber. This allows water from the external inlet pipe to enter the inlet channel through the inlet, and then all water in the inlet channel flows out through the outlet. At this time, water in the inlet channel cannot enter the bypass channel through the connection port of the water distribution chamber, thus completely closing the bypass channel.

[0014] In addition, the three-way valve assembly uses a solenoid valve to control the opening and closing of the connection port to adjust different bypass ratios. The solenoid valve has a fast response speed and can quickly respond to the gas water heater's adjustment needs for the bypass water ratio, further improving the constant temperature performance of the gas water heater.

[0015] In one embodiment, the opening area of ​​at least one of the connecting ports is different from the opening areas of the other connecting ports.

[0016] In one embodiment, the sum of the opening areas of the plurality of connecting ports is less than the cross-sectional area of ​​the bypass channel.

[0017] In one embodiment, at least two of the water distribution chambers are arranged side by side on the bypass channel, and the connecting port is opened on the side wall of the bypass channel opposite to the water distribution chamber.

[0018] In one embodiment, the valve body is further provided with a diversion chamber that communicates with the water inlet channel. The side wall of the diversion chamber is provided with a diversion port that corresponds to each of the water distribution chambers. The diversion chamber communicates with each of the water distribution chambers through the corresponding diversion port.

[0019] In one embodiment, the water distribution chamber includes an inner cylinder and an outer cylinder, which are fitted together. An inlet chamber is formed between the inner cylinder and the outer cylinder. An outlet chamber is formed inside the inner cylinder and communicates with the inlet chamber. The communication port is located on the bottom wall of the inner cylinder. The diversion port is located at the bottom of the corresponding side wall of the outer cylinder. The inlet chamber communicates with the diversion chamber through the diversion port. The solenoid valve is used to block the inner cylinder.

[0020] In one embodiment, there are two water distribution chambers, with the water distribution chamber located between two adjacent water distribution chambers.

[0021] In one embodiment, the outer wall of the outer cylinder is provided with a plurality of connecting lugs at intervals for installing the solenoid valve, and the inner wall of the outer cylinder is provided with positioning steps for positioning the solenoid valve.

[0022] In one embodiment, the bypass channel is set at an angle to the inlet channel.

[0023] The second technical problem mentioned above is solved by the following technical solution:

[0024] A gas water heater, including a three-way valve assembly.

[0025] Compared with the prior art, the gas water heater described in this application has the following advantages: By controlling the opening and closing of different numbers of connecting ports through solenoid valves, different flow rates of water can be controlled to flow out from the bypass outlet, thereby achieving the regulation of the bypass mixing flow rate. This effectively improves the constant temperature effect of the water heater in application scenarios such as fluctuations in the water usage environment and secondary start-up and shutdown of the water heater, thus enhancing the constant temperature performance of the gas water heater. By controlling the solenoid valves to close the connecting ports of each water distribution chamber, the water flow in the inlet channel cannot enter the bypass channel through the connecting ports of the water distribution chambers, thereby completely closing the bypass channel and ensuring the constant temperature performance of the gas water heater. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 is an exploded view of a three-way valve assembly according to an embodiment of this application;

[0028] Figure 2 is a structural schematic diagram of a three-way valve assembly according to an embodiment of this application;

[0029] Figure 3 is a cross-sectional view of a three-way valve assembly according to an embodiment of this application;

[0030] Figure 4 is a cross-sectional view of a three-way valve assembly along the bypass channel according to an embodiment of this application;

[0031] Figure 5 is a cross-sectional view of a three-way valve assembly along the axial direction of the water inlet channel according to an embodiment of this application;

[0032] Figure 6 is a cross-sectional view of a three-way valve assembly in a first state according to an embodiment of this application;

[0033] Figure 7 is a cross-sectional view of a three-way valve assembly in a second state according to an embodiment of this application;

[0034] Figure 8 is a cross-sectional view of a three-way valve assembly in a third state according to an embodiment of this application;

[0035] Figure 9 is a cross-sectional view of a three-way valve assembly in the fourth state according to an embodiment of this application.

[0036] Explanation of reference numerals in the attached drawings: 1. Valve body; 101. Inlet channel; 1011. Inlet; 1012. Outlet; 102. Bypass channel; 1021. Bypass outlet; 103. Diversion chamber; 1031. Connecting port; 1032. Inner cylinder; 1033. Inlet chamber; 1034. Outlet chamber; 1035. Outer cylinder; 104. Diversion chamber; 1041. Diversion port; 105. Connecting lug; 106. Positioning step; 2. Solenoid valve; 3. Water flow component; 4. Hall effect sensor; 5. Temperature sensor; 6. Fastening retaining ring. Detailed Implementation

[0037] 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 some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0039] 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 technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] In related technologies, some three-way valves use a stepper motor to drive a connecting rod to reciprocate. This movement causes the valve core to move, changing the water flow rate at the outlet and bypass outlet, thus adjusting the bypass water ratio. However, the stepper motor's driving process is time-consuming; adjusting the three-way valve to the desired bypass water ratio takes approximately 4 seconds, which affects the stability of the water temperature from the water heater. Furthermore, the stepper motor's movement of the valve core to adjust the water flow ratio creates relative motion with the valve body, which can easily result in gaps. This prevents the bypass channel from being completely closed, and when the water heater needs rapid heating, the bypass water flow can affect the heating efficiency of the gas water heater.

[0042] To address the aforementioned technical problems, embodiments of this application are described below with reference to Figures 1 to 9.

[0043] According to an embodiment of this application, as shown in Figures 1 to 9, a three-way valve assembly is provided, including a valve body 1 and a solenoid valve 2.

[0044] Specifically, as shown in Figure 3, the valve body 1 is provided with an inlet channel 101, a bypass channel 102, and a water distribution chamber 103. There are at least two water distribution chambers 103. One end of the inlet channel 101 forms an inlet 1011, and the other end forms an outlet 1012. One end of the bypass channel 102 is closed, and the other end forms a bypass outlet 1021.

[0045] Specifically, as shown in Figure 3, each water distribution chamber 103 is connected to the water inlet channel 101, and each water distribution chamber 103 is provided with a connecting port 1031. Each water distribution chamber 103 is connected to the bypass pipe through the corresponding connecting port 1031.

[0046] Specifically, each solenoid valve 2 is configured in a one-to-one correspondence with a water distribution chamber 103, and each solenoid valve 2 is used to control the opening and closing of the corresponding connection port 1031.

[0047] Taking a gas water heater as an example, this three-way valve assembly connects the outlet 1012 of the three-way valve assembly to the water tank of the gas water heater, the inlet 1011 to the external water inlet pipe, and the bypass outlet 1021 to the bypass pipe inside the gas water heater. When the bypass mixing function is required, the solenoid valve 2 is controlled to open the corresponding connection port 1031. Water from the external water inlet pipe enters the water inlet channel 101 through the inlet 1011. Part of the water flows out from the outlet 1012 along the water inlet channel 101, and the other part flows into the corresponding water distribution chamber 103 from the water inlet channel 101. Since the connection port 1031 of the water distribution chamber 103 is open, the water in the water distribution chamber 103 flows into the bypass channel 102 through the connection port 1031 and flows out from the bypass outlet 1021 along the bypass channel 102, thus achieving bypass mixing.

[0048] Meanwhile, since the valve body 1 is provided with at least two water distribution chambers 103, the opening and closing of different numbers of connecting ports 1031 are controlled by the solenoid valve 2 to control the flow of water from the bypass outlet 1021, thereby realizing the adjustment of the bypass mixing flow rate. This can effectively improve the constant temperature effect of the gas water heater in application scenarios such as fluctuations in the water environment and secondary start-up and shutdown of the gas water heater, and improve the constant temperature performance of the gas water heater.

[0049] When the bypass mixing function is not needed, the solenoid valve 2 can be controlled to close the connection port 1031 of each water distribution chamber 103, so that after the water from the external water inlet pipe enters the water inlet channel 101 through the inlet port 1011, the water in the water inlet channel 101 flows out through the outlet port 1012. At this time, the water in the water inlet channel 101 cannot enter the bypass channel 102 through the connection port 1031 of the water distribution chamber 103, thereby completely closing the bypass channel 102.

[0050] Furthermore, the three-way valve assembly uses a solenoid valve 2 to control the opening and closing of the connection port 1031. The solenoid valve 2 has a relatively simple structure, making it easy to install on the water distribution chamber 103 and achieve a seal with it. Simultaneously, the solenoid valve 2 does not have relative movement with the valve body 1, eliminating gap issues caused by relative movement and enabling better complete closure of the bypass channel 102. The solenoid valve 2 has a short operating time, switching to the corresponding bypass water ratio within less than 0.1 seconds of receiving the operating signal. This allows for rapid response to the gas water heater's adjustment needs for the bypass water ratio, solving the problem of unstable water temperature caused by the long adjustment time of existing three-way valves and ensuring stable water temperature. Moreover, the solenoid valve 2 is inexpensive, far lower than stepper motors and other drive mechanisms, making this three-way valve assembly cost-effective and facilitating its widespread application in gas water heaters and other similar equipment.

[0051] Specifically, multiple water distribution chambers 103 can be arranged side by side on the bypass channel 102 or arranged around the bypass channel 102. In this embodiment, the distribution of multiple water distribution chambers 103 is not specifically limited.

[0052] Specifically, the number of water-dividing chambers 103 can be set to two, three, or any other number. In this embodiment, the number of water-dividing chambers 103 is not specifically limited.

[0053] Specifically, the connection port 1031 can be configured as any shape such as a circular hole or a square hole. In this embodiment of the application, the shape of the connection port 1031 is not specifically limited.

[0054] Specifically, each water distribution chamber 103 may be provided with one or more connecting ports 1031. In this embodiment of the application, the number of connecting ports 1031 in the water distribution chamber 103 is not specifically limited.

[0055] Specifically, the solenoid valve 2 can be controlled by a controller, which can control the opening or closing of the corresponding solenoid valve 2 based on the detected water temperature or water flow.

[0056] Specifically, the solenoid valve 2 can be a pilot-operated solenoid valve. In this embodiment, the type of solenoid valve 2 is not limited.

[0057] Specifically, the valve body 1 can be integrally molded from a high-temperature resistant material, such as PPS or PPA.

[0058] In one embodiment, as shown in Figures 3 and 4, the opening area of ​​at least one connecting port 1031 is different from the opening areas of the other connecting ports 1031.

[0059] Since the opening areas of at least two connecting ports 1031 are different, when different combinations of opening and closing of connecting ports 1031 are controlled by solenoid valve 2, more different bypass flow adjustment levels can be obtained. This allows for more precise control of the bypass mixing flow when dealing with different working conditions, further improving the constant water temperature effect of the gas water heater under various complex conditions.

[0060] The different opening areas of the connecting port 1031 provide a wider bypass flow rate adjustment range. In some special water usage scenarios, such as extremely low or high inlet water temperature, or extremely high or low water flow rate, a wider bypass flow rate adjustment capability is needed to ensure stable outlet water temperature. The difference in opening area allows for adjustment within a larger flow rate range, adapting to more diverse usage environments and improving the adaptability and stability of the gas water heater.

[0061] For example, the bypass flow rate will be significantly different when only the small opening area of ​​the connecting port 1031 is opened compared to when both the small and large opening areas of the connecting port 1031 are opened simultaneously.

[0062] In one embodiment, as shown in Figures 3 and 4, the sum of the opening areas of the plurality of connecting ports 1031 is less than the cross-sectional area of ​​the bypass channel 102.

[0063] When multiple connecting ports 1031 are opened simultaneously to supply water to the bypass channel 102, keeping the total area of ​​the connecting ports 1031 smaller than the cross-sectional area of ​​the bypass channel 102 allows the water flow to enter the bypass channel 102 more smoothly, ensuring the stability of the bypass water flow. This facilitates more precise control of the mixing ratio during the bypass mixing process, thereby improving the stability and accuracy of the water temperature output from the water heater. If the total area of ​​the connecting ports 1031 is too large, or even exceeds the cross-sectional area of ​​the bypass channel 102, excessive water flow may enter the bypass channel 102 from the connecting ports 1031, preventing the bypass channel 102 from discharging the water in a timely manner.

[0064] Specifically, the cross-sectional area of ​​the bypass channel 102 can be understood as the area of ​​the cross section perpendicular to the water flow direction of the bypass channel 102.

[0065] In one embodiment, as shown in Figures 3 and 4, at least two water distribution chambers 103 are arranged side by side on the bypass channel 102. A connecting port 1031 is provided on the side wall of the bypass channel 102 opposite to the water distribution chambers 103.

[0066] By arranging at least two water distribution chambers 103 side-by-side on the bypass channel 102, the entire three-way valve assembly becomes more compact, making it particularly suitable for situations where the internal space of a gas water heater is limited. Simultaneously, placing the connection port 1031 on the side wall of the bypass channel 102 facilitates integration with the internal structure of the water distribution chambers 103, resulting in a simpler and more direct water circuit connection. This reduces unnecessary pipe bends and complex connections, lowers water flow resistance, and improves the efficiency of the water system.

[0067] In one embodiment, as shown in Figures 3 and 4, the valve body 1 is further provided with a flow-dividing chamber 104, which is connected to the water inlet channel 101. The side wall of the flow-dividing chamber 104 has multiple flow-dividing ports 1041, each corresponding to a water-dividing chamber 103. Each water-dividing chamber 103 is connected to the flow-dividing chamber 104 via a corresponding flow-dividing port 1041.

[0068] A diversion chamber 104 is provided within the valve body 1. The diversion chamber 104 provides an intermediate buffer and distribution area for the water flow from the inlet channel 101. Water is evenly distributed to each diversion chamber 103 through the diversion port 1041. Compared to direct diversion from the inlet channel 101 to the diversion chambers 103, this allows for more precise control of the water volume entering each diversion chamber 103. This ensures a more stable water flow supply to the bypass channel 102 when adjusting the bypass mixing ratio, further improving the accuracy of bypass flow regulation and enhancing the water heater's constant temperature performance.

[0069] By evenly distributing the water flow through the diversion chamber 104, the impact of excessive local water flow on components such as the diversion chamber 103 and the connecting port 1031 is reduced, thus extending the service life of the three-way valve assembly.

[0070] Specifically, the diversion chamber 104 can be configured in any existing shape. For example, the diversion chamber 104 can be configured as a semi-circular chamber, a cylindrical chamber, etc. In this embodiment, the shape of the diversion chamber 104 is not specifically limited.

[0071] For example, as shown in Figure 3, if the valve body 1 is provided with two water distribution chambers 103, the two water distribution chambers 103 can be respectively arranged on opposite sides of the flow distribution chamber 104.

[0072] In one embodiment, as shown in Figures 3 and 4, each water distribution chamber 103 includes an inner cylinder 1032 and an outer cylinder 1035, which are fitted together. An inlet chamber 1033 is formed between the inner cylinder 1032 and the outer cylinder 1035, and an outlet chamber 1034 is formed inside the inner cylinder 1032, communicating with the inlet chamber 1033. A connection port 1031 is located on the bottom wall of the inner cylinder 1032. A diversion port 1041 is located at the bottom of the corresponding side wall of the outer cylinder 1035. The inlet chamber 1033 communicates with the diversion chamber 104 through the diversion port 1041, and the solenoid valve 2 is used to block the inner cylinder 1032.

[0073] Water first enters the inlet chamber 1033 between the inner cylinder 1032 and the outer cylinder 1035, and after a certain buffering, enters the outlet chamber 1034 of the inner cylinder 1032. Finally, it flows into the bypass channel 102 through the connecting port 1031. By designing the inner cylinder 1032 and the outer cylinder 1035, the water flow can be better regulated and stabilized at each stage, avoiding water flow impact and uneven distribution that may be caused by direct water inlet. In the inlet chamber 1033, the water flow can be evenly distributed in a larger space, reducing the situation of excessively fast or slow local flow velocity. Then, it enters the outlet chamber 1034 in a more stable state, and finally enters the bypass channel 102. This helps to improve the uniformity of water flow during bypass mixing, thereby improving the stability of the water temperature at the water heater outlet.

[0074] The nested structure of the inner cylinder 1032 and the outer cylinder 1035 facilitates installation and mounting within the valve body 1, reducing the production cost of the three-way valve assembly.

[0075] In addition, since the connecting port 1031 is located on the bottom wall of the inner cylinder 1032, it can effectively ensure that all water flowing into the outlet chamber 1034 can flow smoothly into the bypass channel 102 through the connecting port 1031 without any obstruction, thereby eliminating the possibility of residual water in the outlet chamber 1034.

[0076] The diversion port 1041 is located at the bottom of the outer cylinder 1035. When the solenoid valve 2 opens the corresponding connection port 1031, the water in the diversion chamber 104 flows into the inlet chamber 1033 from the diversion port 1041 at the bottom of the outer cylinder 1035. This allows the water flow into the inlet chamber 1033 to be buffered to a certain extent. Subsequently, the water flow flows from the inlet chamber 1033 into the outlet chamber 1034, ensuring that the water flow into the outlet chamber 1034 is more stable and uniform, laying a good foundation for subsequent water flow adjustment and bypass mixing.

[0077] Specifically, the inner cylinder 1032 and the outer cylinder 1035 can both be configured as cylindrical structures, so that the inner walls of the water outlet cavity 1034 and the water inlet cavity 1033 are arc-shaped, which can effectively buffer the water flow entering the water outlet cavity 1034 and the water inlet cavity 1033.

[0078] Specifically, the connection between the outlet chamber 1034 and the inlet chamber 1033 can be achieved through the opening at the top of the inner cylinder 1032. When water flows into the inlet chamber 1033, the water level in the inlet chamber 1033 gradually rises. When the water level in the inlet chamber 1033 reaches the top of the inner cylinder 1032, the water in the inlet chamber 1033 will enter the outlet chamber 1034 through the opening at the top of the inner cylinder 1032.

[0079] Specifically, the opening and closing of the top opening of the inner cylinder 1032 can be controlled by the solenoid valve 2, thereby enabling the solenoid valve 2 to control the opening and closing of the connecting port 1031.

[0080] Specifically, the diversion port 1041 can be configured as any shape, such as a circular hole, a semi-circular hole, or a square hole. In this embodiment, the shape of the diversion port 1041 is not specifically limited.

[0081] In one embodiment, as shown in Figures 3 and 4, there are two water distribution chambers 103, and the flow distribution chamber 104 is located between two adjacent water distribution chambers 103.

[0082] By placing the diversion chamber 104 between the two water distribution chambers 103, the structure of the entire three-way valve assembly becomes more compact. This also facilitates communication between the diversion chamber 104 and the two water distribution chambers 103, reducing unnecessary pipe bends and complex connections, and improving the efficiency of the water system.

[0083] Since the two water distribution chambers 103 are respectively located on both sides of the diversion chamber 104, when the solenoid valves 2 corresponding to the two water distribution chambers 103 are both in the open state, the water flow in the diversion chamber 104 can flow evenly into the water distribution chambers 103 on both sides.

[0084] In addition, the two water distribution chambers 103 are easier to realize during the processing of the valve body 1, which facilitates the adoption of standardized processing technology and improves production efficiency.

[0085] Specifically, taking the vertical direction in Figure 3 as an example, the two water distribution chambers 103 can be set above the side wall of the bypass channel 102. Since the connecting port 1031 is opened on the side wall of the bypass channel 102, after the water flows into the water distribution chamber 103, the water can flow directly into the bypass channel 102 through the connecting port 1031 under the action of gravity.

[0086] In one embodiment, as shown in FIG3, a plurality of connecting ears 105 are provided at intervals on the outer periphery of the outer cylinder 1035, and the connecting ears 105 are used to install the solenoid valve 2. A positioning step 106 is provided on the inner periphery of the outer cylinder 1035, and the positioning step 106 is used to position the solenoid valve 2.

[0087] By connecting the solenoid valve 2 to multiple connecting lugs 105 with fasteners, the solenoid valve 2 is securely mounted on the outer cylinder 1035, ensuring that the solenoid valve 2 will not shift or loosen during operation. Simultaneously, the positioning step 106 precisely positions the solenoid valve 2 during installation, allowing it to be accurately installed onto the outer cylinder 1035, reducing adjustment and calibration time during assembly and improving production efficiency.

[0088] In one embodiment, as shown in Figures 2 and 3, the bypass channel 102 is arranged at an angle to the water inlet channel 101.

[0089] Inside a gas water heater, space is limited, and the layout of each component needs to be compact and reasonable. Setting the bypass channel 102 at an angle to the inlet channel 101 better adapts to space constraints, making the structural design of the valve body 1 and the entire water circuit system more flexible. By setting the bypass channel 102 at an angle to the inlet channel 101, spatial interference between components can be avoided, improving space utilization and facilitating miniaturization and overall structural optimization.

[0090] Specifically, as shown in Figure 1, the three-way valve assembly also includes a water flow component 3 and a Hall effect component 4. The water flow component 3 is installed inside the water inlet channel 101 and near one end of the water inlet 1011. The water flow component 3 is installed inside the water inlet channel 101 by a fastening retaining ring 6. The water flow component 3 and the Hall effect component 4 are used to detect the water flow rate at the water inlet 1011 in the water inlet channel 101 and send the detection data to the controller. The controller can control the opening and closing of the solenoid valve 2 based on the received detection data.

[0091] Specifically, as shown in Figures 1, 2 and 5, it also includes a temperature sensor 5. The temperature sensor 5 is used to detect the water flow temperature at the inlet 1011 of the water inlet channel 101 and send the detected temperature information to the controller. The controller can control the opening and closing of the solenoid valve 2 based on the received temperature information.

[0092] The working principle of the three-way valve assembly in this embodiment is described as follows:

[0093] As shown in Figure 6, in the first state of the three-way valve assembly, both solenoid valves 2 are closed. After the water from the external inlet pipe enters the inlet channel 101 through the inlet 1011, the water in the inlet channel 101 flows out through the outlet 1012. At this time, the water in the inlet channel 101 cannot enter the bypass channel 102 through the connection port 1031 of the water distribution chamber 103, and the bypass water ratio is 0%.

[0094] As shown in Figure 7, in the second operating state of the three-way valve assembly, the left solenoid valve 2 is closed, and the right solenoid valve 2 is open. While maintaining the path of the first operating state, the water flow in the diversion chamber 104 flows through the diversion port 1041 into the inlet chamber 1033 of the right water diversion chamber 103. Then, the water flow in the inlet chamber 1033 flows into the outlet chamber 1034, and finally flows through the connecting port 1031 into the bypass channel 102 and flows out from the bypass outlet 1021 along the bypass channel 102. In this state, the bypass channel 102 is in operation. The proportion of bypass water is determined by the ratio of the cross-sectional area of ​​the connecting port 1031 corresponding to the right water diversion chamber 103 to the cross-sectional area of ​​the inlet channel 101. With the cross-sectional area of ​​the inlet channel 101 constant, changing the opening area of ​​the connecting port 1031 corresponding to the right water diversion chamber 103 can change the proportion of bypass water. For example, the proportion of bypass water is 15%.

[0095] As shown in Figure 8, in the third working state of the three-way valve assembly, the left solenoid valve 2 is in the open state, and the right solenoid valve 2 is in the closed state. While maintaining the path of the first working state, the water flow in the diversion chamber 104 flows into the inlet chamber 1033 of the left water diversion chamber 103 through the diversion port 1041. Then, the water flow in the inlet chamber 1033 flows into the outlet chamber 1034, and finally flows into the bypass channel 102 through the connecting port 1031 and flows out from the bypass outlet 1021 along the bypass channel 102. In this state, the bypass channel 102 is in the working state. The proportion of bypass water is determined by the ratio of the cross-sectional area of ​​the connecting port 1031 corresponding to the left water diversion chamber 103 to the cross-sectional area of ​​the inlet channel 101. With the cross-sectional area of ​​the inlet channel 101 constant, changing the opening area of ​​the connecting port 1031 corresponding to the left water diversion chamber 103 can change the proportion of bypass water. For example, the proportion of bypass water is 30%.

[0096] As shown in Figure 9, in the fourth operating state of the three-way valve assembly, both solenoid valves 2 are open, and the water flow is a combination of the second and third operating states. In this state, the bypass channel 102 is in operation, and the proportion of bypass water is determined by the ratio of the total opening area of ​​the two connecting ports 1031 to the cross-sectional area of ​​the inlet channel 101. With the cross-sectional area of ​​the inlet channel 101 constant, changing the total opening area of ​​the two connecting ports 1031 can change the proportion of bypass water; for example, the proportion of bypass water can be 45%.

[0097] According to an embodiment of this application, another aspect provides a gas water heater including a three-way valve assembly.

[0098] This gas water heater uses solenoid valve 2 to control the opening and closing of different numbers of connection ports 1031, thereby controlling the flow of water from the bypass outlet 1021 at different rates. This achieves regulation of the bypass mixing flow, effectively improving the water temperature control in scenarios with fluctuating water usage conditions and during secondary start-ups and shutdowns, thus enhancing the gas water heater's temperature stability. By controlling solenoid valve 2 to close the connection ports 1031 of each water distribution chamber 103, water from the inlet channel 101 cannot enter the bypass channel 102 through the connection ports 1031 of the water distribution chamber 103, thus completely closing the bypass channel 102 and ensuring the gas water heater's temperature stability.

[0099] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0100] The specific embodiments described above are merely illustrative of several implementations of this application, and while the descriptions are detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the scope of protection of this application. Therefore, the scope of protection of this patent application should be determined by the appended claims.

Claims

1. A three-way valve assembly, characterized in that, include: The valve body (1) is provided with an inlet channel (101), a bypass channel (102) and at least two water distribution chambers (103). The two ends of the inlet channel (101) form an inlet (1011) and an outlet (1012) respectively. Each water distribution chamber (103) is connected to the inlet channel (101). Each water distribution chamber (103) is provided with a connecting port (1031). Each water distribution chamber (103) is connected to the bypass channel (102) through the corresponding connecting port (1031). One end of the bypass channel (102) is closed and the other end forms a bypass outlet (1021). Solenoid valves (2) are provided one-to-one with the water distribution chambers (103) to control the opening and closing of the corresponding connecting ports (1031).

2. The three-way valve assembly according to claim 1, characterized in that: The opening area of ​​at least one of the connecting ports (1031) is different from the opening area of ​​the other connecting ports (1031).

3. The three-way valve assembly according to claim 2, characterized in that: The sum of the opening areas of the plurality of the connecting ports (1031) is less than the cross-sectional area of ​​the bypass channel (102).

4. The three-way valve assembly according to claim 1, characterized in that: At least two of the water distribution chambers (103) are arranged side by side on the bypass channel (102), and the connecting port (1031) is opened on the side wall of the bypass channel (102) opposite to the water distribution chamber (103).

5. The three-way valve assembly according to any one of claims 1 to 4, characterized in that: The valve body (1) is also provided with a diversion chamber (104) that communicates with the water inlet channel (101). The side wall of the diversion chamber (104) is provided with a diversion port (1041) that corresponds to the water diversion chamber (103). The diversion chamber (104) communicates with each of the water diversion chambers (103) through the corresponding diversion port (1041).

6. The three-way valve assembly according to claim 5, characterized in that: The water distribution chamber (103) includes an inner cylinder (1032) and an outer cylinder (1035) that are fitted together. An inlet chamber (1033) is formed between the inner cylinder (1032) and the outer cylinder (1035). An outlet chamber (1034) communicating with the inlet chamber (1033) is formed inside the inner cylinder (1032). A connecting port (1031) is located on the bottom wall of the inner cylinder (1032). A diversion port (1041) is located at the bottom of the corresponding side wall of the outer cylinder (1035). The inlet chamber (1033) is connected to the diversion chamber (104) through the diversion port (1041). The solenoid valve (2) is used to block the inner cylinder (1032).

7. The three-way valve assembly according to claim 5, characterized in that: Two water distribution chambers (103) are provided, and the diversion chamber (104) is located between two adjacent water distribution chambers (103).

8. The three-way valve assembly according to claim 6, characterized in that: The outer wall of the outer cylinder (1035) is provided with a plurality of connecting ears (105) for installing the solenoid valve (2) at intervals, and the inner wall of the outer cylinder (1035) is provided with positioning steps (106) for positioning the solenoid valve (2).

9. The three-way valve assembly according to any one of claims 1 to 4, characterized in that: The bypass channel (102) is set at an angle to the water inlet channel (101).

10. A gas-fired water heater, characterized in that, The three-way valve assembly includes any one of claims 1 to 9.

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