A thermostat and water heater

Abstract

The utility model discloses a constant temperature valve and water heater, including valve body, valve bush, valve core and drive part, form first installation cavity in valve body, valve bush fixedly is established in first installation cavity, and the inner chamber wall between valve bush and valve body forms cold water chamber, hot water chamber and water outlet chamber, and cold water inlet is connected with cold water chamber, and hot water inlet is connected with hot water chamber, and water outlet is connected with water outlet chamber, and second installation cavity is formed in valve bush, valve core movably is established in second installation cavity, and the water mixing chamber is formed in valve core, and water mixing chamber is connected with water outlet chamber, and the cold water channel and hot water channel are established between valve bush and valve core, and cold water channel communicates cold water chamber with water mixing chamber, and hot water channel communicates hot water chamber with water mixing chamber, and drive part is configured as drive valve core axial movement along valve bush to adjust the opening of cold water channel and hot water channel. This scheme can avoid the cold and hot water stringing phenomenon between valve bush and valve core, and the flow is big, and the temperature difference of water temperature is small, and the temperature rise rate difference is small.

Description

Technical Field

[0001] This utility model belongs to the field of household appliance technology, and in particular relates to a thermostatic valve and a water heater. Background Technology

[0002] The thermostatic valves proposed in related technologies use a motor and a regulating valve core to automatically adjust the ratio of hot and cold water. However, this results in problems such as cross-contamination between the valve sleeve and the valve core, low flow rate, large temperature difference in the outlet water, and large differences in the rate of temperature rise. Utility Model Content

[0003] This utility model provides a thermostatic valve and water heater that avoids cross-contamination of hot and cold water between the valve sleeve and the valve core, and features a large flow rate, small temperature difference in the outlet water, and small temperature rise rate difference.

[0004] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0005] In some embodiments of this application, a thermostatic valve is provided, comprising:

[0006] The valve body has a first mounting cavity formed inside it, and the valve body is provided with a cold water inlet, a hot water inlet and an outlet communicating with the first mounting cavity;

[0007] A valve sleeve is fixedly installed in the first mounting cavity. A cold water cavity, a hot water cavity, and a water outlet cavity are formed between the valve sleeve and the inner wall of the valve body. The cold water inlet is connected to the cold water cavity, the hot water inlet is connected to the hot water cavity, and the water outlet is connected to the water outlet cavity. A second mounting cavity is formed inside the valve sleeve.

[0008] A valve core is movably disposed within the second mounting cavity. A mixing chamber is formed inside the valve core, and the mixing chamber is connected to the outlet chamber. A cold water channel and a hot water channel are provided between the valve sleeve and the valve core. The cold water channel connects the cold water chamber to the mixing chamber, and the hot water channel connects the hot water chamber to the mixing chamber.

[0009] The drive unit is configured to drive the valve core to move axially along the valve sleeve to adjust the opening of the cold water passage and the hot water passage.

[0010] Compared with the prior art, the advantages and positive effects of this utility model are:

[0011] The thermostatic valve includes a valve body, a valve sleeve, and a valve core. The valve sleeve is fixedly installed in the inner cavity of the valve body, while the valve core is movably installed in the inner cavity of the valve sleeve, allowing it to reciprocate along the axial direction of the valve sleeve. A cold water channel and a hot water channel are provided between the valve core and the valve sleeve. A mixing chamber is formed inside the valve core, and the opening of the cold water channel and the hot water channel are adjusted by the movement of the valve core. A gap exists between the valve sleeve and the valve body, forming mutually isolated cold water chambers, hot water chambers, and an outlet chamber. The cold water chamber is connected to the cold water inlet, the hot water chamber is connected to the hot water inlet, and the outlet chamber is connected to the outlet. Cold water in the cold water chamber flows into the mixing chamber through the cold water channel, and hot water in the hot water chamber flows into the mixing chamber through the hot water channel. After mixing in the mixing chamber, the cold and hot water flow out from the outlet chamber and the outlet to produce water at the set temperature.

[0012] The cold water chamber, hot water chamber, and outlet chamber are isolated from each other. Cold water in the cold water chamber flows into the mixing chamber through the cold water channel, and hot water in the hot water chamber flows into the mixing chamber through the hot water channel. This effectively avoids the problem of cross-contamination between cold and hot water.

[0013] The opening of the cold water and hot water channels is adjusted by the movement of the valve core, thereby regulating the flow of cold and hot water into the mixing chamber to obtain water at the set temperature. The displacement of the valve core is controlled by the drive unit, which can precisely adjust the opening of the cold water and hot water channels. This precise adjustment of the mixed water temperature results in a small temperature difference in the outlet water, a small difference in the rate of temperature rise, and a smooth temperature rise curve.

[0014] When the valve core reciprocates, the opening of the cold water channel and the hot water channel changes simultaneously. When the opening of the cold water channel decreases, the opening of the hot water channel increases, and vice versa. This ensures the water flow rate in the mixing chamber, thereby ensuring the water flow rate at the outlet.

[0015] In some embodiments of this application, the valve sleeve is provided with a first opening and a second opening, and the valve core is provided with a third opening and a fourth opening. The valve core moves along the axial direction of the valve sleeve to adjust the relative position of the first opening and the third opening, and to adjust the relative position of the second opening and the fourth opening.

[0016] The first opening communicates with the third opening to form the cold water channel, and the second opening communicates with the fourth opening to form the hot water channel.

[0017] In some embodiments of this application, the inner wall of the valve sleeve is provided with a first step and a second step, and the first opening and the second opening are located between the first step and the second step;

[0018] The valve core has a third step and a fourth step on its outer peripheral wall. The third opening is located on the side of the third step away from the fourth step, and the fourth opening is located on the side of the fourth step away from the third step.

[0019] The first step portion abuts against the third step portion to limit the displacement of the valve core along a first direction, and the second step portion abuts against the fourth step portion to limit the displacement of the valve core along a second direction, wherein the first direction is opposite to the second direction.

[0020] In some embodiments of this application, a first sealing ring is provided on the outer peripheral wall of the valve core. The first sealing ring is located between the third step and the fourth step, and the first sealing ring seals the inner cavity wall of the valve sleeve.

[0021] In some embodiments of this application, the first opening is provided in multiple locations and is arranged at intervals along the circumference of the valve sleeve, and the second opening is provided in multiple locations and is arranged at intervals along the circumference of the valve sleeve.

[0022] The third opening is provided in multiple portions and is arranged at intervals along the circumference of the valve core, and the fourth opening is provided in multiple portions and is arranged at intervals along the circumference of the valve core.

[0023] In some embodiments of this application, the outer peripheral wall of the valve core has external threads, the drive part includes a transmission shaft, the transmission shaft is provided with internal threads, and the external threads are screwed into the internal threads.

[0024] In some embodiments of this application, a second sealing ring and a third sealing ring are provided on the outer peripheral wall of the valve sleeve. The second sealing ring and the third sealing ring seal with the inner cavity wall of the valve body to divide the inner cavity of the valve body into the cold water cavity, the hot water cavity and the outlet cavity.

[0025] In some embodiments of this application, the valve sleeve includes a valve sleeve body and a valve seat. The valve sleeve body is fixedly connected to the valve body and the valve seat. A second sealing ring is provided on the outer peripheral wall of the valve sleeve body, and a third sealing ring is provided on the outer peripheral wall of the valve seat.

[0026] In some embodiments of this application, a temperature sensor is provided on the valve body, the temperature sensor is configured to detect the water temperature in the outlet chamber, and the drive unit is configured to adjust the displacement of the valve core according to the temperature data fed back by the temperature sensor.

[0027] In some embodiments of this application, a water heater is provided, including a thermostatic valve as described above. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a structural diagram of a thermostatic valve according to some embodiments;

[0030] Figure 2 A cross-sectional view of a thermostatic valve according to some embodiments;

[0031] Figure 3 This is yet another cross-sectional view of a thermostatic valve according to some embodiments;

[0032] Figure 4 This is a structural diagram of a valve sleeve according to some embodiments;

[0033] Figure 5 This is a cross-sectional view of a valve sleeve according to some embodiments;

[0034] Figure 6 This is a structural diagram of a valve sleeve body according to some embodiments;

[0035] Figure 7 This is a structural diagram of a valve seat according to some embodiments;

[0036] Figure 8 This is a structural diagram of a valve core according to some embodiments;

[0037] Figure 9 A cross-sectional view of a valve core according to some embodiments;

[0038] Figure 10 This is a structural diagram of a valve body according to some embodiments;

[0039] Figure 11 This is a cross-sectional view of a valve body according to some embodiments;

[0040] Figure 12 This is a structural diagram of a drive shaft according to some embodiments.

[0041] Explanation of reference numerals in the attached figures:

[0042] 100, Valve body; 110, First mounting cavity; 120, Cold water inlet; 130, Hot water inlet; 140, Outlet; 150, Cold water cavity; 160, Hot water cavity; 170, Outlet cavity; 180, Second internal thread;

[0043] 200, Valve sleeve; 210, Valve sleeve body; 220, Valve seat; 231, Second mounting ring groove; 232, Third mounting ring groove; 241, First step; 242, Second step; 251, Second external thread; 252, Third external thread; 253, Third internal thread; 260, Second mounting cavity; 271, First opening; 272, Second opening; 280, First guide portion;

[0044] 300, Valve core; 311, Third opening; 312, Fourth opening; 321, Third step; 322, Fourth step; 331, First section of valve core; 332, Second section of valve core; 340, First external thread; 350, Mixing chamber; 360, Second guide section; 370, First mounting ring groove;

[0045] 400, drive shaft; 410, first internal thread; 420, fourth mounting ring groove;

[0046] 500. Temperature sensor;

[0047] 610. Cold water passage; 620. Hot water passage;

[0048] 710, First sealing ring; 720, Second sealing ring; 730, Third sealing ring; 740, Fourth sealing ring. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0050] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0051] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0052] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0053] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0054] In some embodiments of this application, a thermostatic valve is provided. Figure 1 This is a structural diagram of a thermostatic valve. Figure 2 and Figure 3 This is a cross-sectional view of a thermostatic valve under different operating conditions.

[0055] The thermostatic valve includes a valve body 100. Figure 10 This is a structural diagram of valve body 100. Figure 11 This is a cross-sectional view of the valve body 100. The valve body 100 has a first mounting cavity 110 inside, and the valve body 100 is provided with a cold water inlet 120, a hot water inlet 130 and an outlet 140 communicating with the first mounting cavity 110.

[0056] For example, the cold water inlet 120 and the hot water inlet 130 are located on opposite sides of the valve body 100, and the outlet 140 can be located on the side where the cold water inlet 120 is located, or it can be located on the side where the hot water inlet 130 is located.

[0057] One end of the first mounting cavity 110 is closed, and the other end is open. The open end of the first mounting cavity 110 facilitates the installation of other components.

[0058] The thermostatic valve also includes a valve sleeve 200. Figure 4 This is a structural diagram of valve sleeve 200. Figure 5 This is a cross-sectional view of the valve sleeve 200. The valve sleeve 200 is fixedly disposed within the first mounting cavity 110. The valve sleeve 200 is inserted into the first mounting cavity 110 through one open end and fixed therein.

[0059] A gap exists between the valve sleeve 200 and the inner wall of the valve body 100. A cold water chamber 150, a hot water chamber 160, and an outlet chamber 170 are formed between the valve sleeve 200 and the inner wall of the valve body 100, and the cold water chamber 150, hot water chamber 160, and outlet chamber 170 are isolated from each other. The cold water inlet 120 communicates with the cold water chamber 150, the hot water inlet 130 communicates with the hot water chamber 160, and the outlet 140 communicates with the outlet chamber 170.

[0060] The valve sleeve 200 has a hollow cylindrical structure, and a second mounting cavity 260 is formed inside the valve sleeve 200, with both ends of the second mounting cavity 260 being through.

[0061] The thermostatic valve also includes a valve core 300. Figure 8 This is a structural diagram of valve core 300. Figure 9 This is a cross-sectional view of the valve core 300. The valve core 300 is movably disposed within the second mounting cavity 260, and the valve core 300 can reciprocate along the axial direction of the second mounting cavity 260.

[0062] The valve core 300 has a mixing chamber 350 inside, which is connected to the outlet chamber 170. The valve core 300 has a hollow cylindrical structure, with one end of the mixing chamber 350 closed and the other end connected to the outlet chamber 170. Cold water and hot water mix in the mixing chamber 350, and the mixed water flows out from the outlet chamber 170 and the outlet 140. The temperature of the mixed water can be adjusted by regulating the flow rate of cold and hot water into the mixing chamber 350.

[0063] The valve sleeve 200 and the valve core 300 are provided with a cold water channel 610 and a hot water channel 620. The cold water channel 610 connects the cold water chamber 150 and the mixing chamber 350, and the hot water channel 620 connects the hot water chamber 160 and the mixing chamber 350.

[0064] In other words, a cold water channel 610 is provided between the valve sleeve 200 and the valve core 300, connecting the cold water chamber 150 and the mixing chamber 350. Cold water flows into the cold water chamber 150 through the cold water inlet 120, and then into the mixing chamber 350 through the cold water channel 610. A hot water channel 620 is provided between the valve sleeve 200 and the valve core 300, connecting the hot water chamber 160 and the mixing chamber 350. Hot water flows into the hot water chamber 160 through the hot water inlet 130, and then into the mixing chamber 350 through the hot water channel 620.

[0065] Thermostatic valves also include a drive unit. Figure 12 This is a structural diagram of the drive shaft 400 in the drive unit. The drive unit is configured to drive the valve core 300 to move axially along the valve sleeve 200 to adjust the opening of the cold water channel 610 and the hot water channel 620.

[0066] In other words, when it is necessary to adjust the outlet water temperature, the drive unit drives the valve core 300 to move along the axial direction of the valve sleeve 200. The movement of the valve core 300 adjusts the opening of the cold water channel 610 and the hot water channel 620, thereby adjusting the amount of cold water flowing through the cold water channel 610 and the amount of hot water flowing through the hot water channel 620, and thus adjusting the temperature of the mixed water to produce outlet water at the set temperature.

[0067] Reference Figure 3 When the valve core 300 moves in the second direction, the opening of the cold water channel 610 gradually increases and the opening of the hot water channel 620 gradually decreases. The amount of cold water flowing into the mixing chamber 350 increases and the amount of hot water decreases, thereby reducing the temperature of the mixed water. The mixed water flows out through the outlet chamber 170 and the outlet 140 in sequence. Figure 3 The valve core 300 moves to its limit position along the second direction.

[0068] Reference Figure 2 When the valve core 300 moves in the first direction, the second direction is opposite to the first direction. The opening of the cold water channel 610 gradually decreases, and the opening of the hot water channel 620 gradually increases. The amount of cold water flowing into the mixing chamber 350 decreases and the amount of hot water increases, thereby increasing the temperature of the mixed water. The mixed water flows out through the outlet chamber 170 and the outlet 140 in sequence. Figure 2 The valve core 300 moves to its limit position along the first direction.

[0069] The thermostatic valve of this application includes a valve body 100, a valve sleeve 200, and a valve core 300. The valve sleeve 200 is fixedly disposed in the inner cavity of the valve body 100, and the valve core 300 is movably disposed in the inner cavity of the valve sleeve 200, and the valve core 300 can reciprocate along the axial direction of the valve sleeve 200. A cold water channel 610 and a hot water channel 620 are provided between the valve core 300 and the valve sleeve 200. A mixing chamber 350 is formed inside the valve core 300, and the opening degree of the cold water channel 610 and the hot water channel 620 is adjusted by the movement of the valve core 300. A gap exists between the valve sleeve 200 and the valve body 100, forming a mutually isolated cold water chamber 150, a hot water chamber 160, and an outlet chamber 170. The cold water chamber 150 is connected to the cold water inlet 120, the hot water chamber 160 is connected to the hot water inlet 130, and the outlet chamber 170 is connected to the outlet 140. The cold water in the cold water chamber 150 flows into the mixing chamber 350 through the cold water channel 610, and the hot water in the hot water chamber 160 flows into the mixing chamber 350 through the hot water channel 620. After the cold water and hot water are mixed in the mixing chamber 350, they flow out from the outlet chamber 170 and the outlet 140 to produce water at a set temperature.

[0070] The cold water chamber 150, hot water chamber 160, and outlet chamber 170 are isolated from each other. The cold water in the cold water chamber 150 flows into the mixing chamber 350 through the cold water channel 610, and the hot water in the hot water chamber 160 flows into the mixing chamber 350 through the hot water channel 620. This effectively avoids the problem of cross-contamination between cold and hot water.

[0071] The opening of the cold water channel 610 and the hot water channel 620 is adjusted by the movement of the valve core 300, thereby regulating the flow of cold and hot water into the mixing chamber 350 to obtain water at the set temperature. The displacement of the valve core 300 is controlled by the drive unit, which can precisely adjust the opening of the cold water channel 610 and the hot water channel 620. This precise adjustment of the mixed water temperature results in a small temperature difference in the outlet water, a small difference in the rate of temperature rise, and a smooth temperature rise curve.

[0072] When the valve core 300 reciprocates, the opening of the cold water channel 610 and the hot water channel 620 changes simultaneously. When the opening of the cold water channel 610 decreases, the opening of the hot water channel 620 increases, and when the opening of the cold water channel 610 increases, the opening of the hot water channel 620 decreases. This ensures the water flow rate in the mixing chamber 350, thereby ensuring the water flow rate.

[0073] In some embodiments of this application, reference is made to Figures 4 to 6 The valve sleeve 200 is provided with a first opening 271 and a second opening 272, which are arranged at intervals along the length of the valve sleeve 200. The shape of the first opening 271 and the second opening 272 is not limited, and can be rectangular, square, trapezoidal, circular, elliptical, etc.

[0074] Reference Figure 8 and Figure 9 The valve core 300 is provided with a third opening 311 and a fourth opening 312, which are arranged at intervals along the length of the valve core 300. The shape of the third opening 311 and the fourth opening 312 is not limited, and can be rectangular, square, trapezoidal, circular, elliptical, etc.

[0075] The first opening 271 is connected to the third opening 311 to form a cold water channel 610, and the second opening 272 is connected to the fourth opening 312 to form a hot water channel 620.

[0076] The valve core 300 moves along the axial direction of the valve sleeve 200 to adjust the relative position of the first opening 271 and the third opening 311, and to adjust the relative position of the second opening 272 and the fourth opening 312.

[0077] If the area of ​​the connection between the first opening 271 and the third opening 311 is larger, the opening of the cold water channel 610 will be larger, and the amount of cold water flowing into the mixing chamber 350 will increase. If the area of ​​the connection between the first opening 271 and the third opening 311 is smaller, the opening of the cold water channel 610 will be smaller, and the amount of cold water flowing into the mixing chamber 350 will decrease.

[0078] If the area of ​​the connection between the second opening 272 and the fourth opening 312 is larger, the opening of the hot water channel 620 will be larger, and the amount of hot water flowing into the mixing chamber 350 will increase. If the area of ​​the connection between the second opening 272 and the fourth opening 312 is smaller, the opening of the hot water channel 620 will be smaller, and the amount of hot water flowing into the mixing chamber 350 will decrease.

[0079] The relative positions of the first opening 271 and the third opening 311 are adjusted by the movement of the valve core 300, which means adjusting the area of ​​the connection between the first opening 271 and the third opening 311, and thus adjusting the opening degree of the cold water channel 610. The relative positions of the second opening 272 and the fourth opening 312 are also adjusted by the movement of the valve core 300, which means adjusting the area of ​​the connection between the second opening 272 and the fourth opening 312, and thus adjusting the opening degree of the hot water channel 620.

[0080] The cold water passage 610 and the hot water passage 620 are formed by openings in the valve sleeve 200 and the valve core 300. The opening degree of the cold water passage 610 and the hot water passage 620 can be adjusted by the movement of the valve core 300 relative to the valve sleeve 200, thereby regulating the flow of cold and hot water into the mixing chamber 350. The structure is simple. Furthermore, the opening degree adjustments of the cold water passage 610 and the hot water passage 620 are synchronous and opposite, so while regulating the water temperature, the flow rate into the mixing chamber 350 can also be guaranteed, thus achieving a large water flow rate.

[0081] In some embodiments of this application, reference is made to Figure 2 , Figure 4 and Figure 5 The inner wall of the valve sleeve 200 is provided with a first step portion 241 and a second step portion 242, and the first opening 271 and the second opening 272 are located between the first step portion 241 and the second step portion 242.

[0082] Reference Figure 2 , Figure 8 and Figure 9 The valve core 300 has a third step portion 321 and a fourth step portion 322 on its outer peripheral wall. The third opening 311 is located on the side of the third step portion 321 away from the fourth step portion 322, and the fourth opening 312 is located on the side of the fourth step portion 322 away from the third step portion 321.

[0083] The first step portion 241 abuts against the third step portion 321 to limit the displacement of the valve core 300 along a first direction, and the second step portion 242 abuts against the fourth step portion 322 to limit the displacement of the valve core 300 along a second direction, wherein the first direction is opposite to the second direction.

[0084] Figure 2 In the middle, the first step 241 and the third step 321 abut against each other, and there is a gap between the second step 242 and the fourth step 322. At this time, the area of ​​the connecting opening between the second opening 272 and the fourth opening 312 reaches the maximum, the opening of the hot water channel 620 is at its maximum, the first opening 271 and the third opening 311 are completely offset, the cold water channel 610 is closed, and at this time, all the water flowing into the mixing chamber 350 is hot water.

[0085] Figure 3 In the middle, the second step 242 and the fourth step 322 abut against each other, and there is a gap between the first step 241 and the third step 321. At this time, the area of ​​the connecting opening between the first opening 271 and the third opening 311 reaches its maximum, the opening of the cold water channel 610 is at its maximum, the second opening 272 and the fourth opening 312 are completely offset, the hot water channel 620 is closed, and at this time, all the water flowing into the mixing chamber 350 is cold water.

[0086] Thermostatic valve is made of Figure 2 The position shown is towards Figure 3 When the position changes as shown, the valve core 300 moves along the second direction under the driving action of the drive unit. As the valve core 300 moves continuously, the area of ​​the connection between the first opening 271 and the third opening 311 gradually increases, and the area of ​​the connection between the second opening 272 and the fourth opening 312 gradually decreases. That is, the opening of the cold water channel 610 gradually increases, and the opening of the hot water channel 620 gradually decreases. The amount of cold water flowing into the mixing chamber 350 increases, the amount of hot water decreases, and the temperature of the water in the mixing chamber 350 decreases.

[0087] Thermostatic valve is made of Figure 3 The position shown is towards Figure 2 When the position changes as shown, the valve core 300 moves along the first direction under the driving action of the drive unit. As the valve core 300 moves continuously, the area of ​​the connection between the first opening 271 and the third opening 311 gradually decreases, and the area of ​​the connection between the second opening 272 and the fourth opening 312 gradually increases. That is, the opening of the cold water channel 610 gradually decreases, and the opening of the hot water channel 620 gradually increases. The amount of cold water flowing into the mixing chamber 350 decreases, the amount of hot water increases, and the temperature of the water in the mixing chamber 350 rises.

[0088] In some embodiments of this application, reference is made to Figure 2 , Figure 8 as well as Figure 9 A first sealing ring 710 is provided on the outer peripheral wall of the valve core 300. The first sealing ring 710 is located between the third step portion 321 and the fourth step portion 322, and the first sealing ring 710 seals the inner cavity wall of the valve sleeve 200.

[0089] A first mounting ring groove 370 is provided on the outer peripheral wall of the valve core 300, and a first sealing ring 710 is disposed within the first mounting ring groove 370. The first sealing ring 710 further isolates the cold water passage 610 from the hot water passage 620, preventing water from flowing between the cold water passage 610 and the hot water passage 620.

[0090] In some embodiments of this application, the outer peripheral wall of the valve core 300 is in close contact with the inner cavity wall of the valve sleeve 200. When the water in the cold water chamber 150 flows through the cold water channel 610 and the water in the hot water chamber 160 flows through the hot water channel 620, water crossover between the valve core 300 and the valve sleeve 200 can be avoided.

[0091] In some embodiments of this application, reference is made to Figure 4 and Figure 5 The first opening 271 is provided in multiple locations and is arranged at intervals along the circumference of the valve sleeve 200, and the second opening 272 is provided in multiple locations and is arranged at intervals along the circumference of the valve sleeve 200.

[0092] Reference Figure 8 and Figure 9 The third opening 311 is provided in multiple locations and is arranged at intervals along the circumference of the valve core 300, and the fourth opening 312 is provided in multiple locations and is arranged at intervals along the circumference of the valve core 300.

[0093] A cold water chamber 150 surrounds the outer periphery of the valve sleeve 200, with multiple first openings 271 and third openings 311 to facilitate the uniform flow of cold water into the mixing chamber 350. A hot water chamber 160 surrounds the outer periphery of the valve sleeve 200, with multiple second openings 272 and fourth openings 312 to facilitate the uniform flow of hot water into the mixing chamber 350. This helps to ensure uniform mixing of cold and hot water within the mixing chamber 350.

[0094] In some embodiments of this application, reference is made to Figure 8 The valve core 300 has an external thread on its outer peripheral wall, designated as the first external thread 340. The drive unit is a motor, which includes a transmission shaft 400. Figure 12 This is a structural diagram of a drive shaft 400. The drive shaft 400 has an internal thread, denoted as the first internal thread 410, and a first external thread 340 is screwed onto the first internal thread 410. (Refer to...) Figure 2 .

[0095] The drive shaft 400 rotates, and through the connection between the first external thread 340 and the first internal thread 410, the valve core 300 is driven, causing the valve core 300 to move axially along the valve sleeve 200. The motor uses a multi-threaded screw drive to control the stroke of the valve core 300, ensuring reliable stroke control.

[0096] In some embodiments of this application, reference is made to Figure 8 The valve core 300 includes a first valve core section 331 and a second valve core section 332, with the outer diameter of the first valve core section 331 being smaller than that of the second valve core section 332. The outer peripheral wall of the first valve core section 331 is provided with external threads for connection to the drive shaft 400. The outer peripheral wall of the second valve core section 332 is provided with a third opening 311, a fourth opening 312, and a first mounting annular groove 370. The circumferential wall of the second valve core section 332 is tightly fitted against the inner wall of the valve sleeve 200 to prevent water from flowing between the cold water passage 610 and the hot water passage 620.

[0097] In some embodiments of this application, reference is made to Figure 2 One end of the valve sleeve 200 is open, and the drive shaft 400 extends into the inner cavity of the valve sleeve 200 through the open end to connect with the valve core 300.

[0098] Reference Figure 12 A fourth mounting ring groove 420 is provided on the outer peripheral wall of the drive shaft 400, and a fourth sealing ring 740 is provided in the fourth mounting ring groove 420. The fourth sealing ring 740 seals with the inner cavity wall of the valve sleeve 200.

[0099] In some embodiments of this application, reference is made to Figure 2 , Figure 4 as well as Figure 5The valve sleeve 200 is provided with a second sealing ring 720 and a third sealing ring 730 on its outer peripheral wall. The second sealing ring 720 and the third sealing ring 730 seal with the inner cavity wall of the valve body 100 to divide the inner cavity of the valve body 100 into the cold water cavity 150, the hot water cavity 160 and the outlet cavity 170.

[0100] Specifically, the outer peripheral wall of the valve sleeve 200 is provided with a second mounting ring groove 231 and a third mounting ring groove 232. A second sealing ring 720 is provided in the second mounting ring groove 231, and a third sealing ring 730 is provided in the third mounting ring groove 232.

[0101] In some embodiments of this application, reference is made to Figure 4 and Figure 5 The valve sleeve 200 includes a valve sleeve body 210 and a valve seat 220. Figure 6 This is a structural diagram of the valve sleeve body 210. Figure 7 This is a structural diagram of valve seat 220.

[0102] The valve sleeve body 210 is fixedly connected to the valve body 100, and the valve sleeve body 210 is fixedly connected to the valve seat 220. The second sealing ring 720 is provided on the outer peripheral wall of the valve sleeve body 210, and the third sealing ring 730 is provided on the outer peripheral wall of the valve seat 220.

[0103] Specifically, a second external thread 251 is provided on the outer peripheral wall of one end of the valve sleeve body 210, and a second internal thread 180 is provided on the inner cavity wall of the valve body 100. The second external thread 251 is connected to the second internal thread 180 to achieve the fixed installation of the valve sleeve body 210 inside the valve body 100.

[0104] A third internal thread 253 is provided on the inner peripheral wall of the other end of the valve sleeve body 210, and a third external thread 252 is provided on the outer peripheral wall of the valve seat 220. The third internal thread 253 and the third external thread 252 are connected to realize the fixed installation between the valve seat 220 and the valve sleeve body 210.

[0105] In some embodiments of this application, reference is made to Figure 5 A first guide portion 280 is provided on the inner wall of the valve sleeve body 210; see reference Figure 8 A second guide portion 360 is provided on the outer peripheral wall of the valve core 300. The first guide portion 280 cooperates with the second guide portion 360 to guide the movement of the valve core 300.

[0106] For example, the first guide portion 280 is a protrusion that extends axially along the valve sleeve 200; the second guide portion 360 is a groove that extends axially along the valve core 300; the protrusion moves along the groove.

[0107] In some embodiments of this application, reference is made to Figure 2 A temperature sensor 500 is provided on the valve body 100. The temperature sensor 500 is configured to detect the water temperature in the outlet chamber 170. The drive unit is configured to adjust the displacement of the valve core 300 according to the temperature data fed back by the temperature sensor 500.

[0108] Specifically, a temperature sensor 500 is installed on the side wall of the water outlet chamber 170, which detects the water temperature in the water outlet chamber 170 in real time. The water temperature detected by the temperature sensor 500 is fed back to the drive unit, which then controls the movement stroke of the valve core 300 to adjust the flow of cold and hot water in the mixing chamber 350, thereby regulating the water temperature.

[0109] In some embodiments of this application, a water heater is provided, comprising a body and a thermostatic valve, wherein the thermostatic valve is the thermostatic valve disclosed in the above embodiments. The water heater can be an electric water heater or a gas water heater.

[0110] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0111] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing 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. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by this utility model.

Claims

1. A thermostatic valve, characterized in that, Including: The valve body has a first mounting cavity inside, and the valve body is provided with a cold water inlet, a hot water inlet and an outlet communicating with the first mounting cavity; A valve sleeve is fixedly installed in the first mounting cavity. A cold water cavity, a hot water cavity, and a water outlet cavity are formed between the valve sleeve and the inner wall of the valve body. The cold water inlet is connected to the cold water cavity, the hot water inlet is connected to the hot water cavity, and the water outlet is connected to the water outlet cavity. A second mounting cavity is formed inside the valve sleeve. A valve core is movably disposed within the second mounting cavity. A mixing chamber is formed inside the valve core, and the mixing chamber is connected to the outlet chamber. A cold water channel and a hot water channel are provided between the valve sleeve and the valve core. The cold water channel connects the cold water chamber to the mixing chamber, and the hot water channel connects the hot water chamber to the mixing chamber. The drive unit is configured to drive the valve core to move axially along the valve sleeve to adjust the opening of the cold water passage and the hot water passage.

2. The thermostatic valve according to claim 1, characterized in that, The valve sleeve is provided with a first opening and a second opening, and the valve core is provided with a third opening and a fourth opening. The valve core moves along the axial direction of the valve sleeve to adjust the relative position of the first opening and the third opening, and to adjust the relative position of the second opening and the fourth opening. The first opening communicates with the third opening to form the cold water channel, and the second opening communicates with the fourth opening to form the hot water channel.

3. The thermostatic valve according to claim 2, characterized in that, The inner wall of the valve sleeve is provided with a first step and a second step, and the first opening and the second opening are located between the first step and the second step. The valve core has a third step and a fourth step on its outer peripheral wall. The third opening is located on the side of the third step away from the fourth step, and the fourth opening is located on the side of the fourth step away from the third step. The first step portion abuts against the third step portion to limit the displacement of the valve core along a first direction, and the second step portion abuts against the fourth step portion to limit the displacement of the valve core along a second direction, wherein the first direction is opposite to the second direction.

4. The thermostatic valve according to claim 3, characterized in that, A first sealing ring is provided on the outer peripheral wall of the valve core. The first sealing ring is located between the third step and the fourth step, and the first sealing ring seals the inner cavity wall of the valve sleeve.

5. The thermostatic valve according to claim 2, characterized in that, The first opening is provided in multiple portions and is arranged at intervals along the circumference of the valve sleeve; the second opening is provided in multiple portions and is arranged at intervals along the circumference of the valve sleeve. The third opening is provided in multiple portions and is arranged at intervals along the circumference of the valve core, and the fourth opening is provided in multiple portions and is arranged at intervals along the circumference of the valve core.

6. The thermostatic valve according to any one of claims 1 to 5, characterized in that, The valve core has external threads on its outer peripheral wall, and the drive unit includes a transmission shaft with internal threads, the external threads being screwed into the internal threads.

7. The thermostatic valve according to any one of claims 1 to 5, characterized in that, The outer peripheral wall of the valve sleeve is provided with a second sealing ring and a third sealing ring. The second sealing ring and the third sealing ring seal with the inner cavity wall of the valve body to divide the inner cavity of the valve body into the cold water cavity, the hot water cavity and the outlet cavity.

8. The thermostatic valve according to claim 7, characterized in that, The valve sleeve includes a valve sleeve body and a valve seat. The valve sleeve body is fixedly connected to the valve body and the valve seat. A second sealing ring is provided on the outer peripheral wall of the valve sleeve body, and a third sealing ring is provided on the outer peripheral wall of the valve seat.

9. The thermostatic valve according to any one of claims 1 to 5, characterized in that, A temperature sensor is provided on the valve body, and the temperature sensor is configured to detect the water temperature in the outlet chamber. The drive unit is configured to adjust the displacement of the valve core according to the temperature data fed back by the temperature sensor.

10. A water heater, characterized in that, It includes a thermostatic valve as described in any one of claims 1 to 9.

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