A tee water mixing valve and water heater

Abstract

The utility model relates to a multiway valve technical field, concretely is a tee mixing valve and water heater, including the casing of tee, the first water inlet channel, second water inlet channel and water outlet channel have on the casing, be provided with the valve core hole on the casing, the valve core hole is threaded and is equipped with the valve core, first water inlet channel, second water inlet channel are located valve core one side respectively, the water outlet channel is located valve core below, the valve core is hollow in the middle lower part and is established with the slot that penetrates inside in the side face, still include the driver of fixed control valve core rotation on the casing, the utility model discloses setting the water outlet channel in valve core lower end, the unique valve core slot design and rotation mechanism, have realized the accurate dimmer adjustment of cold and hot water proportion, avoided the pressure fluctuation and the problem that the water is not mixed evenly because of the synchronous opening and closing channel in traditional design.

Description

Technical Field

[0001] This utility model relates to the field of multi-way valve technology, specifically a three-way mixing valve. Background Technology

[0002] Existing three-way mixing valves are basically designed horizontally, meaning that the two inlet channels and the outlet channel are located on the same plane, and the valve core has three through holes. With the above design, when adjusting the valve core, the opening and closing degree of each channel must be adjusted synchronously. For example, in a thermostatic three-way mixing valve for hot spring water control with publication number CN109798377A, when the actuator 9 rotates, it will synchronously drive the opening and closing degree of the three through holes 201 relative to the cold water inlet 101, the hot water inlet 102, and the outlet 103. That is, the water flow rate will be adjusted synchronously. Repeated changes in pipeline pressure lead to poor mixing effect and make it impossible to achieve stepless temperature adjustment. Utility Model Content

[0003] To address the aforementioned issues, this invention provides a three-way mixing valve. Through a unique valve core structure and intelligent control method, it achieves stepless temperature adjustment, and the opening of the outlet end avoids the problem of poor mixing effect caused by repeated changes in pipeline pressure.

[0004] The technical solution adopted by this utility model is as follows: a three-way mixing valve, including a three-way housing, the housing having a first inlet channel, a second inlet channel and an outlet channel, the housing having a valve core hole, a valve core passing through the valve core hole, the first inlet channel and the second inlet channel being located on one side of the valve core, the outlet channel being located below the valve core, the valve core being a hollow cylindrical shape in the lower middle part and having a slot that penetrates the interior on the side, and also including a driver fixed on the housing to control the rotation of the valve core; the slot span of the valve core is such that when rotated to between the first inlet channel and the second inlet channel, the first inlet channel and the second inlet channel are simultaneously connected to the outlet channel, and the slot span of the valve core is such that when rotated to one side of the first inlet channel or the second inlet channel, the second inlet channel or the first inlet channel on the other side is closed. The valve core's slotted span allows it to simultaneously connect with the outlet channel when rotated between the first and second inlet channels. This allows the first and second inlet water to mix and flow out through the outlet channel, enabling adjustment of the mixed water ratio (e.g., hot and cold water ratio) to regulate the outlet water temperature or flow rate, meeting diverse usage needs. When the valve core rotates to one side of the first or second inlet channel, the other side closes, allowing either channel to be opened independently, enabling a single water source to flow out through the outlet channel. This versatile design is suitable for scenarios requiring only a single water source, such as pure cold water or pure hot water. The lower part of the valve core is hollow and cylindrical with slotted sides that extend through the interior. Water flows through the valve core to the outlet channel via a clear and smooth path, reducing flow resistance. The outlet channel remains continuously open with a consistent opening range, improving water flow efficiency. The overall structure is compact, and the valve core fits tightly with the housing, reducing the risk of leakage.

[0005] As one of the preferred solutions for a three-way mixing valve, the housing is provided with a step to seal the bottom surface of the valve core, and the first water inlet channel and the second water inlet channel are sealed to the side wall of the valve core.

[0006] As one of the preferred embodiments of a three-way mixing valve, it also includes a first temperature sensor disposed on the first inlet channel and a second temperature sensor disposed on the outlet channel. It also includes a flow sensor disposed on the second inlet channel.

[0007] As one of the preferred solutions for a three-way mixing valve, the upper end of the valve core passes through a pressure plate, and the lower end of the pressure plate has a protrusion. The protrusion is sealed to the valve core hole, and the valve core and the pressure plate are sealed by a sealing ring; the actuator is mounted on the pressure plate.

[0008] As one of the preferred solutions for a three-way mixing valve, the first inlet channel, the second inlet channel, and the outlet channel are equipped with connecting pipes.

[0009] As one of the preferred solutions for a three-way mixing valve, the first inlet channel and the outlet channel are provided with mounting bases for installing temperature sensors, and the first temperature sensor and the second temperature sensor are respectively inserted into the mounting bases.

[0010] A water heater comprising a three-way mixing valve.

[0011] A method for controlling a three-way mixing valve, wherein the three-way mixing valve includes connecting a first inlet channel to a hot water pipe, a second inlet channel to a cold water pipe, and an outlet channel to a water intake pipe. A. Set the required temperature Tset ; B. Read the temperature value from the first temperature sensor. Th, Temperature value from the second temperature sensor Tout Flow sensor values Qc; C. According to Tset and Tout Difference combined with current traffic Qc Obtain the valve core rotation angle θ in 0°θ < 180°; D. Actuator rotation valve core angle θ; E. Repeat steps B, C, and D to make Th and Tout The difference tends to stabilize.

[0012] The advantages of this invention are as follows: By placing the water outlet channel at the lower end of the valve core, the unique slotted design and rotation mechanism of the valve core enable precise and stepless adjustment of the hot and cold water ratio, avoiding pressure fluctuations and uneven mixing caused by synchronous opening and closing of the channels in traditional designs. Secondly, the water outlet channel is always open with a constant opening angle. Combined with the intelligent control of the actuator, the valve core rotation angle can be dynamically optimized based on real-time data from the first temperature sensor, the second temperature sensor, and the flow sensor, resulting in smooth changes in water flow and improving user comfort and energy efficiency. The sealing structure between the valve core and the housing, such as the steps, pressure plate bosses, and sealing rings, effectively reduces the risk of leakage, enhances overall reliability and durability, and the compact design facilitates installation and maintenance, making it suitable for various hot and cold water mixing applications. Attached Figure Description

[0013] Figure 1 This is a perspective view of the present utility model.

[0014] Figure 2 This is a cross-sectional view of the water inlet channel of this utility model.

[0015] Figure 3 This is a cross-sectional view of the present invention from another direction.

[0016] Figure 4 This is a horizontal sectional view of the present invention.

[0017] Figure 5 This is an exploded view of the present invention.

[0018] The components are: 1. Housing; 2. First water inlet channel; 3. Second water inlet channel; 4. Water outlet channel; 5. Valve core hole; 6. Valve core; 7. Slot; 8. Driver; 9. Pressure plate; 10. Boss; 11. Step; 12. First temperature sensor; 13. Second temperature sensor; 14. Flow sensor. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 The three-dimensional structure of this utility model is shown. The three-way housing 1 has a T-shaped layout, with a first water inlet channel 2 and a second water inlet channel 3 extending horizontally, and a water outlet channel 4 extending vertically downward. The valve core hole 5 is located at the center of the top of the housing, and a cylindrical valve core 6 extends through the valve core hole into the inner cavity of the housing. The lower side wall of the valve core has a through-hole 7. The actuator 8 is mounted on the pressure plate 9 by fasteners, and the boss 10 at the lower end of the pressure plate 9 is embedded in the upper end of the valve core hole 5 to achieve radial sealing.

[0021] Combination Figures 2 to 4 The first inlet channel 2 and the second inlet channel 3 are symmetrically distributed on the side of the valve core 6, while the outlet channel 4 is located directly below the valve core. The bottom surface of the valve core forms a seal with the step 11 provided inside the housing, and the side wall of the valve core achieves a circumferential seal with the inner wall surfaces of the two inlet channels through a precise fit. The first temperature sensor 12 is mounted inside the wall of the first inlet channel 2 via a mounting base to monitor the hot water temperature Th in real time; the second temperature sensor 13 is installed in the outlet channel 4 in the same manner to monitor the mixed water temperature Tout; the flow sensor 14 is integrated at the inlet of the second inlet channel 3 to detect the cold water flow rate Qc. The flow sensor includes a magnetic impeller located inside the second inlet channel and a Hall sensor attached to the outer wall of the second inlet channel 3, and the flow rate is detected by detecting the rotation of the impeller.

[0022] In this embodiment, the structure for connecting the pipeline is a flange protruding from the pipe opening. Of course, it can also be a threaded structure or a pipe insertion scheme. It should be noted that the design and modification of the above-mentioned conventional connection structure should be understood as falling within the protection scope of this application.

[0023] Figure 5The exploded view clearly shows the assembly relationship of each component: the upper end of the valve core 6 passes through the center hole of the pressure plate 9, and an O-ring seal is set between them to effectively prevent axial leakage. The upper end of the valve core 6 is inserted into the output end of the actuator 8. When the actuator operates and drives the valve core to rotate, the arc-shaped edge of the slot 7 will dynamically cover the ports of the first water inlet channel 2 and the second water inlet channel 3. When the slot span is designed to be 180° (e.g. Figure 4 As shown, rotating the valve core to 90° allows both inlet channels to connect with the outlet channel simultaneously; rotating it to 0° opens only the first inlet channel; rotating it to 180° opens only the second inlet channel.

[0024] The specific working process is as follows: Hot water flows in through the first inlet channel 2, cold water flows in through the second inlet channel 3, and the mixed water is finally output from the outlet channel 4. After the user sets the target temperature Tset, the controller collects the hot water temperature Th, the mixed water temperature Tout, and the cold water flow rate Qc in real time, and accurately calculates the required rotation angle θ of the valve core (0°≤θ<180°) through a PID algorithm. The actuator 8 drives the valve core to rotate according to the θ value, and by adjusting the ratio of the area covered by the slot 7 to the two inlet ports, stepless and precise allocation of hot and cold water flow rates is achieved. If there is a deviation between Tout and Tset, the system will automatically iteratively adjust the θ value until the temperature difference tends to stabilize. Throughout the entire control process, the flow cross-sectional area of ​​the outlet channel 4 remains constant, effectively avoiding the pressure fluctuation problem caused by throttling at the outlet end of traditional three-way mixing valves.

[0025] In this embodiment, the first water inlet channel and the second water inlet channel are located on the same horizontal line. Of course, they can also be set to form a certain angle, in which case the slot span changes according to the included angle.

Claims

1. A three-way mixing valve, comprising a three-way housing (1), wherein the housing (1) has a first inlet channel (2), a second inlet channel (3), and an outlet channel (4), and wherein a valve core (6) hole (5) is provided on the housing (1), and a valve core (6) is inserted through the valve core (6) hole (5), characterized in that: The first water inlet channel (2) and the second water inlet channel (3) are located on one side of the valve core (6), and the water outlet channel (4) is located below the valve core (6). The valve core (6) is a hollow cylindrical shape in the middle and lower part and has a slot (7) that runs through the interior on the side. It also includes a driver (8) that is fixed on the housing (1) to control the rotation of the valve core (6). The span of the slot (7) of the valve core (6) is such that when the valve core (6) rotates between the first water inlet channel (2) and the second water inlet channel (3), the first water inlet channel (2) and the second water inlet channel (3) are simultaneously connected to the water outlet channel (4). The span of the slot (7) of the valve core (6) is such that when the valve core (6) rotates to one side of the first water inlet channel (2) or the second water inlet channel (3), the second water inlet channel (3) or the first water inlet channel (2) on the other side is closed.

2. The three-way mixing valve according to claim 1, characterized in that: The housing (1) is provided with a step (11) on the bottom surface of the sealing valve core (6), and the first water inlet channel (2) and the second water inlet channel (3) are sealed to the side wall of the valve core (6).

3. The three-way mixing valve according to claim 1, characterized in that: It also includes a first temperature sensor (12) installed on the first water inlet channel (2) and a second temperature sensor (13) installed on the water outlet channel (4).

4. The three-way mixing valve according to claim 3, characterized in that: It also includes a flow sensor (14) installed on the second water inlet channel (3).

5. The three-way mixing valve according to claim 1, characterized in that: The upper end of the valve core (6) is mounted on a pressure plate (9), and the lower end of the pressure plate (9) is provided with a boss (10). The boss (10) is sealed to the hole (5) of the valve core (6), and the valve core (6) and the pressure plate (9) are sealed by a sealing ring.

6. The three-way mixing valve according to claim 1, characterized in that: The first water inlet channel (2), the second water inlet channel (3), and the water outlet channel (4) are equipped with connecting pipe structures.

7. The three-way mixing valve according to claim 3, characterized in that: The first water inlet channel (2) and the water outlet channel (4) are provided with mounting bases for installing temperature sensors, and the first temperature sensor (12) and the second temperature sensor (13) are respectively inserted into the mounting bases.

8. A water heater, characterized in that: The three-way mixing valve includes any one of claims 1 to 7.

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