An electronically controlled thermostatic mixing valve core for a shower

Abstract

This utility model provides an electrically controlled thermostatic mixing valve core for a shower, relating to the field of shower valve core technology. It includes a linear motor connected to a piston, which is movably inserted into a mixing sleeve. The mixing sleeve has cold water inlets and hot water inlets near its two ends, and a plurality of water-blocking rings and a plurality of water-outlet rings are arranged alternately in the middle of the mixing sleeve. The advantages of this utility model are that it uses a linear motor to precisely adjust the piston's movement, completely eliminating manual temperature adjustment. This achieves precise adjustment with small torque and fine step distances, resulting in a stable and constant temperature, enabling accurate and intelligent temperature control and meeting users' needs for precise water temperature control.

Description

Technical Field

[0001] The utility model relates to the field of shower valve core technology, and in particular to an electrically controlled thermostatic mixing valve core for a shower. Background Technology

[0002] In today's home life, showerheads and faucets are important bathroom products, and their functions and designs are closely related to people's daily user experience. With the continuous advancement of technology and consumers' pursuit of a high-quality life, showerheads and faucets are showing an increasingly diversified and intelligent development trend.

[0003] Among the many functions of showerheads and faucets, temperature control is undoubtedly one of the core features. However, most showerheads and faucets on the market still use manual temperature control valves, a system that has remained unchanged for over a decade. These manual valves have several significant drawbacks. First, manual temperature control is cumbersome. Users need to repeatedly turn or toggle the adjustment knob to find the right water temperature, often requiring multiple adjustments to achieve the desired result. This is especially true when the hot and cold water supply is unstable, such as insufficient hot water in winter or excessively high cold water temperatures in summer. The difficulty of manual temperature control increases further, potentially requiring users to spend considerable time and effort adjusting the water temperature, causing significant inconvenience. Second, the appearance of manual temperature control valves is often difficult to conceal. To facilitate user operation, adjustment knobs and other components are often exposed on the product surface, which negatively impacts the overall aesthetics and does not align with the modern home's emphasis on simplicity and beauty. Utility Model Content

[0004] This utility model overcomes the shortcomings of the prior art and provides an electrically controlled thermostatic mixing valve core for a shower. It uses a linear motor to precisely adjust the movement of the piston, completely eliminating manual temperature adjustment. It achieves precise adjustment with small torque and fine step distance, resulting in a stable and constant temperature effect. It realizes accurate and intelligent temperature control and meets users' needs for precise water temperature control.

[0005] To solve the above-mentioned technical problems, the utility model is implemented through the following technical solution:

[0006] An electrically controlled thermostatic mixing valve core for a shower includes a linear motor connected to a piston, the piston being movably inserted into a mixing sleeve.

[0007] The mixing sleeve is provided with a cold water inlet and a hot water inlet near both ends, and a number of water-blocking rings and a number of water-outlet rings are provided in the middle of the mixing sleeve. The number of water-blocking rings and the number of water-outlet rings are arranged alternately and crosswise.

[0008] A first retaining ring, a second retaining ring, and a third retaining ring are sequentially arranged along the length of the piston.

[0009] When the second baffle ring is pulled to the side of all the baffle rings furthest from the hot water inlet, cold water enters from the cold water inlet and cannot flow out through the outlet ring because it is blocked by the second baffle ring. At this time, only hot water can be output.

[0010] When the second baffle ring is pulled to the side of all the baffle rings furthest from the cold water inlet, hot water entering from the hot water inlet cannot flow out through the outlet ring because it is blocked by the second baffle ring, and only cold water can be output at this time;

[0011] When the second baffle ring is positioned between several water-blocking rings and several water-outlet rings, and there are water-outlet rings on both sides of the second baffle ring, it can output a mixture of hot and cold water.

[0012] Furthermore, the mixing sleeve includes a cylindrical shell, and a central mixing channel is provided at the center of the piston.

[0013] Furthermore, the first baffle ring, the second baffle ring, and the third baffle ring sequentially divide the interior of the cylinder shell into a first mixing chamber, a cold water chamber, a hot water chamber, and a second mixing chamber.

[0014] As the piston moves within the mixing sleeve, the internal volumes of the first mixing chamber, cold water chamber, hot water chamber, and second mixing chamber change, thereby altering the flow rate of hot and cold water.

[0015] Furthermore, the linear motor is connected to a sealing cover, and a first sealing ring is provided in the sealing cover. The output end of the linear motor passes through the first sealing ring and is connected to the piston.

[0016] Furthermore, the piston has a nut cavity at its end, and a connecting nut is fitted inside the nut cavity. The output end of the linear motor is connected to the connecting nut.

[0017] Furthermore, the sealing cover is provided with a buckle, and a snap fastener is provided on the outside of the cylinder shell, which engages with the buckle.

[0018] Furthermore, the sealing cover is also provided with a second sealing ring and a third sealing ring.

[0019] Furthermore, the outer periphery of the first retaining ring, the second retaining ring, and the third retaining ring are all provided with retaining ring sealing rings.

[0020] Compared with existing technologies, the advantages of this utility model are:

[0021] 1. The linear motor is used to precisely adjust the movement of the piston, completely eliminating the need for manual temperature adjustment. It achieves precise adjustment with small torque and fine step distance, which can achieve a constant and stable temperature effect, realize accurate and intelligent temperature adjustment, and meet the user's needs for precise water temperature control.

[0022] 2. The mixing channel connects the first and second mixing chambers, allowing cold and hot water to mix before output, quickly balancing the water temperature and improving the user's showering experience. It also balances the pressure inside the valve core. No matter how the piston moves, the total volume of the first and second mixing chambers remains unchanged, and the pressure is always balanced. There is no pressure buildup or resistance throughout the process, ensuring smooth water flow and thus extending the service life of the valve core. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the utility model and, together with the embodiments of the utility model, are used to explain the utility model. They do not constitute a limitation on the utility model. In the drawings:

[0024] Figure 1 This is a schematic diagram of the overall structure of the thermostatic mixing valve core according to an embodiment of the present utility model;

[0025] Figure 2 This is an exploded schematic diagram of the thermostatic mixing valve core according to an embodiment of the present invention;

[0026] Figure 3 This is a cross-sectional view of the thermostatic mixing valve core according to an embodiment of the present utility model;

[0027] Figure 4 This is a schematic diagram of the mixing sleeve structure according to an embodiment of the present utility model;

[0028] Figure 5 This is a schematic diagram of the piston structure according to an embodiment of the present invention;

[0029] Figure 6 This is a cross-sectional view of the piston according to an embodiment of the present invention.

[0030] In the diagram: 1. Linear motor; 2. Sealing cover; 201. First sealing ring; 202. Buckle ring; 3. Second sealing ring; 4. Third sealing ring; 5. Piston; 501. First retaining ring; 502. Second retaining ring; 503. Third retaining ring; 504. Nut cavity; 505. Mixing channel; 6. Mixing sleeve; 601. Cylinder shell; 6011. Snap fastener; 602. Water-proof ring; 603. Water outlet ring; 604. Cold water inlet; 605. Hot water inlet; 7. First mixing chamber; 8. Second mixing chamber; 9. Cold water chamber; 10. Hot water chamber; 11. Connecting nut. Detailed Implementation

[0031] The preferred embodiments of the utility model are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the utility model.

[0032] like Figures 1 to 6As shown, an electrically controlled thermostatic mixing valve core for a shower includes a linear motor 1, which is connected to a piston 5. The piston 5 is movably inserted into a mixing sleeve 6. The linear motor 1 generates linear motion, causing the piston 5 to move within the mixing sleeve 6 to change the ratio of hot and cold water output, thereby achieving constant temperature water output.

[0033] The mixing sleeve 6 is provided with a cold water inlet 604 and a hot water inlet 605 near its two ends. Several water-blocking rings 602 and several water-outlet rings 603 are provided in the middle of the mixing sleeve 6. The water-blocking rings 602 and several water-outlet rings 603 are arranged alternately and crosswise. This grid-like water outlet can effectively balance the pressure of cold and hot water, allowing the valve core to operate stably under a constant pressure difference.

[0034] A first retaining ring 501, a second retaining ring 502, and a third retaining ring 503 are sequentially arranged along the length of the piston 5.

[0035] The first retaining ring 501, the second retaining ring 502, and the third retaining ring 503 divide the interior of the cylindrical shell 601 into a first mixing chamber 7, a cold water chamber 9, a hot water chamber 10, and a second mixing chamber 8 in sequence. The mixing sleeve 6 includes the cylindrical shell 601, and a central mixing channel 505 is provided at the center of the piston 5. The mixing channel 505 has an opening on the side near the cold water inlet 604, and an opening at the center near the hot water inlet 605.

[0036] When the second baffle ring 502 is pulled to the side of all the water-blocking rings 602 away from the hot water inlet 605, the cold water enters from the cold water inlet 604 and is blocked by the second baffle ring 502, so it cannot flow out through the outlet ring 603. At this time, the opening of the mixing channel 505 near the cold water inlet 604 is in the first mixing chamber 7. Since the first mixing chamber 7 is closed at this time, the water in it cannot flow to the second mixing chamber 8. Therefore, at this time, only the water from the hot water inlet 605 passes through the hot water chamber 10 to output hot water.

[0037] When the second baffle ring 502 is pulled to the side of all the water-blocking rings 602 away from the cold water inlet 604, the hot water enters from the hot water inlet 605 and cannot flow out through the outlet ring 603 because it is blocked by the second baffle ring 502. At this time, the second mixing chamber 8 is also in a closed state. Therefore, the water in the first mixing chamber 7 and the second mixing chamber 8 cannot be the same. So at this time, only the water from the cold water inlet 604 passes through the cold water chamber 9 to output cold water.

[0038] When the second baffle ring 502 is positioned between several water-blocking rings 602 and several water-outlet rings 603, with water-outlet rings 603 on both sides of the second baffle ring 502, it can output a mixture of hot and cold water. At this time, water from the cold water inlet 604 can enter the first mixing chamber 7, and water from the hot water inlet 605 can enter the second mixing chamber 8. The first mixing chamber 7 and the second mixing chamber 8 are interconnected via a mixing channel 505. When the water pressure in the first mixing chamber 7 is greater than that in the second mixing chamber 8, cold water overflows from the mixing channel 505 into the second mixing chamber 8 and mixes with the hot water in the second mixing chamber 8. When the water pressure in the second mixing chamber 8 is greater than that in the first mixing chamber 7, hot water overflows from the mixing channel 505 into the second mixing chamber 8. 5 overflows into the first mixing chamber 7 and mixes with the cold water in the first mixing chamber 7. This setting allows the water to be mixed in advance before output, so that the water temperature can be quickly balanced. On the other hand, no matter how the piston 5 moves, the first mixing chamber 7 and the second mixing chamber 8 are always connected by the mixing channel 505, the total volume remains unchanged, the pressure remains balanced and unchanged, and there is no pressure resistance throughout the process. At the same time, the piston 5 moves perpendicular to the water inlet flow direction, and only the retaining ring seals set on the outer periphery of the first retaining ring 501, the second retaining ring 502 and the third retaining ring 503 rub against the cylinder shell 601, ensuring that the piston movement resistance is balanced and minimized throughout the process, so that the torque and power consumption of the linear motor 1 are also minimized accordingly.

[0039] As piston 5 moves within mixing sleeve 6, the internal volumes of the first mixing chamber 7, cold water chamber 9, hot water chamber 10, and second mixing chamber 8 change, thereby altering the flow rate of hot and cold water and thus regulating the water temperature. Since the movement of piston 5 is adjusted by linear motor 1, manual temperature control is completely eliminated. Furthermore, the linear motor 1 achieves precise temperature stability through small torque and fine step adjustments, resulting in accurate and intelligent temperature control.

[0040] Linear motor 1 is connected to sealing cover 2. Sealing cover 2 is provided with a first sealing ring 201. The output end of linear motor 1 passes through the first sealing ring 201 and is connected to piston 5. Sealing cover 2 is a sealing element when linear motor 1 and sealing cover 2 are in contact, preventing water leakage when the motor shaft moves. It is a national standard mechanical part, and its main material is water-resistant and high-temperature resistant rubber.

[0041] The sealing cover 2 is also equipped with a second sealing ring 3 and a third sealing ring 4. The second sealing ring 3 and the third sealing ring 4 are the sealing elements of the sealing cover to prevent leakage during the assembly and use of the overall valve core. They are national standard mechanical parts, and the main materials are high-strength, corrosion-resistant, safe and environmentally friendly materials such as stainless steel, copper, aluminum and engineering plastics.

[0042] The piston 5 has a nut cavity 504 at its end, and a connecting nut 11 is fitted inside the nut cavity 504. The output end of the linear motor 1 is connected to the connecting nut 11. This arrangement makes the connection between the linear motor 1 and the piston 5 more stable, ensuring that the kinetic energy output by the linear motor 1 can be transferred to the piston 5 in a timely manner. Both the piston 5 and the mixing sleeve 6 are made of stainless steel, so they are very wear-resistant during mutual sliding and insertion, ensuring their long-lasting performance.

[0043] The sealing cover 2 is equipped with a retaining ring 202, and the outer side of the cylindrical shell 601 is equipped with a buckle 6011. The buckle 6011 engages with the retaining ring 202, so that the two can be quickly positioned and inserted during installation, ensuring the accuracy of installation and the firmness after installation.

[0044] This thermostatic mixing valve core uses a linear motor to precisely adjust the piston movement, completely eliminating the need for manual temperature adjustment. It achieves precise adjustment with small torque and fine step distance, resulting in a stable and constant temperature. This enables accurate and intelligent temperature control, meeting users' needs for precise water temperature control.

[0045] The mixing channel connects the first and second mixing chambers, allowing cold and hot water to mix before output, quickly balancing the water temperature and improving the user's showering experience. It also balances the pressure inside the valve core. No matter how the piston moves, the total volume of the first and second mixing chambers remains unchanged, and the pressure is always balanced. There is no pressure buildup or resistance throughout the process, ensuring smooth water flow and thus extending the service life of the valve core.

[0046] Finally, it should be noted that the above are merely preferred embodiments of the utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the utility model should be included within the protection scope of the utility model.

Claims

1. An electrically controlled thermostatic mixing valve core for a shower, characterized in that, Includes a linear motor (1), which is connected to a piston (5), and the piston (5) is movably inserted into the mixing sleeve (6); The mixing sleeve (6) is provided with a cold water inlet (604) and a hot water inlet (605) near its two ends. The mixing sleeve (6) is provided with a number of water-blocking rings (602) and a number of water-outlet rings (603) in the middle. The number of water-blocking rings (602) and the number of water-outlet rings (603) are arranged alternately and crosswise. A first retaining ring (501), a second retaining ring (502), and a third retaining ring (503) are sequentially arranged along the length direction of the piston (5); When the second baffle ring (502) is pulled to the side where all the water-blocking rings (602) are far away from the hot water inlet (605), cold water enters from the cold water inlet (604) and cannot flow out through the outlet ring (603) because it is blocked by the second baffle ring (502). At this time, only hot water can be output. When the second baffle ring (502) is pulled to the side of all the water-blocking rings (602) away from the cold water inlet (604), the hot water enters from the hot water inlet (605) and cannot flow out through the outlet ring (603) because it is blocked by the second baffle ring (502). At this time, only cold water can be output. When the second baffle ring (502) is positioned between several water-blocking rings (602) and several water-outlet rings (603), and there are water-outlet rings (603) on both sides of the second baffle ring (502), it can output a mixture of hot and cold water.

2. The electrically controlled thermostatic mixing valve core of the shower according to claim 1, characterized in that, The mixing sleeve (6) includes a sleeve shell (601), and the piston (5) has a central mixing channel (505) at its center.

3. The electrically controlled thermostatic mixing valve core of the shower according to claim 2, characterized in that, The first baffle ring (501), the second baffle ring (502), and the third baffle ring (503) divide the interior of the cylindrical shell (601) into the first mixing chamber (7), the cold water chamber (9), the hot water chamber (10), and the second mixing chamber (8) in sequence; As the piston (5) moves in the mixing sleeve (6), the internal volumes of the first mixing chamber (7), cold water chamber (9), hot water chamber (10) and the second mixing chamber (8) change, thereby changing the amount of hot water and cold water output accordingly.

4. The electrically controlled thermostatic mixing valve core of the shower according to claim 2 or 3, characterized in that, The linear motor (1) is connected to the sealing cover (2), and a first sealing ring (201) is provided in the sealing cover (2). The output end of the linear motor (1) passes through the first sealing ring (201) and is connected to the piston (5).

5. The electrically controlled thermostatic mixing valve core of the shower according to claim 4, characterized in that, The piston (5) has a nut cavity (504) at its end, and a connecting nut (11) is fitted inside the nut cavity (504). The output end of the linear motor (1) is connected to the connecting nut (11).

6. The electrically controlled thermostatic mixing valve core of the shower according to claim 5, characterized in that, The sealing cover (2) is provided with a buckle (202), and a buckle (6011) is provided on the outside of the cylindrical shell (601), and the buckle (6011) is engaged with the buckle (202).

7. The electrically controlled thermostatic mixing valve core of the shower according to claim 6, characterized in that, The sealing cover (2) is also provided with a second sealing ring (3) and a third sealing ring (4).

8. The electrically controlled thermostatic mixing valve core of the shower according to claim 7, characterized in that, The outer periphery of the first retaining ring (501), the second retaining ring (502) and the third retaining ring (503) are all provided with retaining ring sealing rings.

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