Water mixing valve and water dispenser comprising same

Abstract

The utility model provides a water mixing valve and a water dispenser comprising the same. The water mixing valve comprises a cold water channel, a hot water channel, a water outlet channel and a water mixing cavity, a through hole is formed in the wall face of the water mixing cavity, and the extending direction of the through hole is tangent to the cross section of the water mixing cavity. The cold water channel is communicated with the water mixing cavity through the through hole, the hot water channel and the water outlet channel are directly communicated with the water mixing cavity, the inner wall surface of the hot water channel and / or the water outlet channel is spiral, and one component in the extension direction of the through hole is consistent with the water flow direction of the hot water channel and / or the water outlet channel. The cold water channel is communicated with the water mixing cavity through the through hole, and the extending direction of the through hole is tangent to the cross section of the water mixing cavity, so that stable rotational flow can be formed when water flow enters the water mixing cavity, the mixing process of cold water and hot water is accelerated, water temperature fluctuation is reduced, and mixing uniformity is improved. Meanwhile, the inner walls of the hot water channel and the water outlet channel are designed in a spiral mode, the rotation effect of water flow is further enhanced, and the softness of outlet water is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of water mixing valve and the water dispenser comprising it. BACKGROUND

[0002] With the acceleration of modern life rhythm, people's demand for instant hot and cold water has significantly increased. Water dispensers can meet different temperature requirements through one-key operation, effectively replacing the waiting process of traditional water boilers. With the increasing attention to water quality safety, water dispensers with filtering function have become an important choice for families and office places. Their multiple purification systems can remove impurities, heavy metals and other harmful substances, providing protection for drinking water health. At the same time, the design of water dispensers is gradually moving towards lightweight and intelligent, with some models equipped with intelligent temperature control, water shortage reminder, energy-saving mode and other functions, which not only meet the modern home aesthetics, but also comply with the environmental protection concept.

[0003] Currently, the water dispenser includes a heating container, and the cold water is heated by the heating container. The heated water is mixed with cold water by the water mixing valve to deliver warm water to the user end. However, in the current water mixing valve, hot water and cold water are in laminar flow state, and the fluid in the laminar flow flows in layers. Therefore, the mixing of hot water and cold water is only achieved by slow molecular diffusion, resulting in uneven mixing of cold water and hot water, and further causing the outlet water temperature to fluctuate periodically, affecting the user's experience. SUMMARY

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art, and to provide a water mixing valve and a water dispenser comprising the same.

[0005] The utility model solves the above technical problems by the following technical solutions:

[0006] The utility model discloses a kind of water mixing valves, the water mixing valve includes cold water channel, hot water channel, outlet channel and water mixing cavity, the wall surface of the water mixing cavity is equipped with through-hole, the extension direction of the through-hole is tangent to the cross section of the water mixing cavity;

[0007] The cold water channel is communicated with the water mixing cavity by the through-hole, the hot water channel and the outlet channel are directly communicated with the water mixing cavity, the inner wall surface of the hot water channel and / or the outlet channel is spiral, one component of the extension direction of the through-hole is consistent with the water flow direction of the hot water channel and / or the outlet channel;

[0008] Alternatively, the hot water channel is communicated with the water mixing cavity by the through-hole, the cold water channel and the outlet channel are directly communicated with the water mixing cavity, the inner wall surface of the cold water channel and / or the outlet channel is spiral, one component of the extension direction of the through-hole is consistent with the water flow direction of the cold water channel and / or the outlet channel.

[0009] In this scheme, the cold water channel or the hot water channel is connected to the mixing chamber through the through hole, and the extension direction of the through hole is tangent to the cross section of the mixing chamber, so that the water flow can form a stable rotational flow when entering the mixing chamber, thereby accelerating the mixing process of cold water and hot water, reducing water temperature fluctuations, and improving mixing uniformity. At the same time, the inner wall of the hot water channel or the cold water channel and the water outlet channel is designed in a spiral shape, which further enhances the rotational effect of the water flow, so that the mixed water flow maintains stable spiral motion when flowing out, reduces turbulence and splashing, and improves the softness and comfort of the water outlet. In addition, the extension direction of the through hole is consistent with the water flow direction of the hot water channel or the cold water channel, which reduces the resistance of the water flow entering the mixing chamber, reduces noise, and improves the smoothness of the water flow, ensuring efficient mixing under different water pressure conditions.

[0010] Preferably, when the inner wall surfaces of the cold water channel and the water outlet channel are both spiral, the rotational directions of the inner wall surfaces of the cold water channel and the water outlet channel are the same.

[0011] Alternatively, when the inner wall surfaces of the hot water channel and the water outlet channel are both spiral, the rotational directions of the inner wall surfaces of the hot water channel and the water outlet channel are the same.

[0012] In this scheme, when the inner wall surfaces of the cold water channel and the water outlet channel are both spiral and have the same rotational direction, the mixing effect of the water flow and the user experience can be significantly optimized. When cold water or hot water enters the mixing chamber, due to the spiral guidance of the inner wall, the water flow will form a stable rotational motion, which can accelerate the uniform fusion of the two when mixed with hot water, reducing local water temperature fluctuations and improving water temperature stability. At the same time, the spiral inner wall surface of the water outlet channel is consistent with the rotational direction of the hot water channel or the cold water channel, so that the mixed water flow can maintain a stable rotational trajectory when flowing out, reducing turbulence and splashing, making the water outlet more soft and concentrated, and improving user comfort. In addition, the above structure can effectively reduce the resistance of the water flow in the channel, reduce energy loss, and ensure smooth flow of the water flow under different water pressure conditions. The rotational motion of the water flow not only improves the mixing efficiency, but also reduces the impact force of the water flow on the inner wall of the channel, thereby reducing noise and providing a quieter use environment for users.

[0013] Preferably, the cross-sectional area of the through hole gradually decreases from a direction away from the mixing chamber to a direction close to the mixing chamber.

[0014] In the present scheme, when the water flow passes through the tapered through hole, the flow rate will gradually increase due to the decrease of the cross-sectional area, so as to form stronger momentum exchange when entering the mixing chamber, accelerate the mixing process of cold water and hot water, make the water temperature more uniform, reduce the local temperature difference and water temperature fluctuation. In addition, by adopting the above structure, the impact force of the water flow on the inner wall of the through hole can be effectively reduced, the generation of water noise can be reduced, and a more quiet use environment is provided for the user. The tapered through hole helps to optimize the flow state of the water flow, reduce the turbulence and vortex phenomenon, make the water flow more smooth, thereby reducing the energy loss and improving the flow capacity of the water flow. The acceleration effect of the water flow can also enhance the rotational motion, when the cold water or hot water enters the mixing chamber through the through hole, the rotational water flow can further improve the mixing efficiency, so that the mixed water flow maintains a stable rotational trajectory when discharging, reduces the splashing of water, and improves the softness of the discharged water.

[0015] Preferably, when the cold water channel is communicated with the mixing chamber through the through hole, the cross-sectional area of the first water flow channel of the hot water channel is greater than the cross-sectional area of the second water flow channel of the mixing chamber.

[0016] Or, when the hot water channel is communicated with the mixing chamber through the through hole, the cross-sectional area of the third water flow channel of the cold water channel is greater than the cross-sectional area of the fourth water flow channel of the mixing chamber.

[0017] In the present scheme, when the water flow enters the mixing chamber with smaller cross-sectional area, the flow rate will increase, thereby accelerating the mixing process of cold water and hot water, making the water temperature more uniform, reducing the local temperature difference and water temperature fluctuation, and improving the stability of water temperature. By adopting the above structure, the impact force of the water flow on the inner wall of the channel can be effectively reduced, the generation of water noise can be reduced, and a more quiet use environment is provided for the user.

[0018] Preferably, the mixing valve further comprises a first built-in part and a second built-in part, the first built-in part is arranged in the hot water channel and forms the first water flow channel between the first built-in part and the hot water channel, and the second built-in part is arranged in the mixing chamber and forms the second water flow channel between the second built-in part and the mixing chamber; wherein the cross-sectional area of the hot water channel is not less than the cross-sectional area of the mixing chamber, and the cross-sectional area of the first built-in part is greater than the cross-sectional area of the second built-in part.

[0019] Alternatively, the water mixing valve further comprises a third built-in part and a fourth built-in part, the third built-in part is arranged in the cold water channel and forms the third water flow channel between the third built-in part and the cold water channel, and the fourth built-in part is arranged in the water mixing cavity and forms the fourth water flow channel between the fourth built-in part and the water mixing cavity; wherein the cross-sectional area of the cold water channel is not less than the cross-sectional area of the water mixing cavity, and the cross-sectional area of the third built-in part is greater than the cross-sectional area of the fourth built-in part.

[0020] In the scheme, the above structure is adopted to realize that the first water flow channel is greater than the second water flow channel, or the third water flow channel is greater than the fourth water flow channel.

[0021] Preferably, the first built-in part is coaxial with the hot water channel, and / or the second built-in part is coaxial with the water mixing cavity.

[0022] Alternatively, the third built-in part is coaxial with the cold water channel, and / or the fourth built-in part is coaxial with the water mixing cavity.

[0023] In the scheme, the above structure is adopted to make the transition of water flow between the hot water channel and the water mixing cavity or between the cold water channel and the water mixing cavity more stable, reduce the turbulence and vortex phenomenon when the water flow enters the water mixing cavity, and thus improve the stability of the water flow. When the water flow flows in the coaxial channels, the uniform flow rate and pressure distribution can be maintained, the local water pressure fluctuation is reduced, and the uniformity and stability of the water temperature are ensured.

[0024] Preferably, the number of through holes is multiple, and the multiple through holes are arranged in the circumferential direction of the wall surface of the water mixing cavity and / or the extension direction of the water mixing cavity.

[0025] In the scheme, the above structure is adopted, and the arrangement of multiple through holes enables the cold water or hot water to enter the water mixing cavity uniformly from multiple directions, thereby accelerating the mixing process of the cold water and hot water, making the water temperature more uniform, reducing the local temperature difference and water temperature fluctuation, and improving the stability of the water temperature. In addition, when the water flow enters the water mixing cavity through multiple through holes, multiple water flow intersection points can be formed, the rotation effect of the water flow is enhanced, and the mixing efficiency is further improved.

[0026] The utility model discloses a water dispenser, the water dispenser includes the water mixing valve as any above.

[0027] In the scheme, the water mixing valve is applied to the water dispenser. With the above structure, the cold water channel or the hot water channel is connected with the water mixing cavity through the through hole, and the extension direction of the through hole is tangent to the cross section of the water mixing cavity, so that the water flow can form stable rotational flow when entering the water mixing cavity, thereby accelerating the mixing process of the cold water and the hot water, reducing the water temperature fluctuation, and improving the mixing uniformity. At the same time, the inner wall of the hot water channel or the cold water channel and the water outlet channel is designed in a spiral shape, which further enhances the rotational effect of the water flow, so that the mixed water flow maintains stable spiral motion when flowing out, reduces turbulence and splashing, and improves the softness and comfort of the water outlet. In addition, the extension direction of the through hole is consistent with the water flow direction of the hot water channel or the cold water channel, which reduces the resistance of the water flow when entering the water mixing cavity, reduces the noise, and at the same time improves the smoothness of the water flow, and ensures that efficient mixing can be achieved under different water pressure conditions.

[0028] Preferably, the water dispenser comprises a heating member, a first cold water passage and a second cold water passage, the first cold water passage is connected with a water inlet of the heating member, the heating member is used for heating cold water, a water outlet of the heating member is connected with the hot water channel, and the second cold water passage is connected with the cold water channel.

[0029] In the scheme, the heating member in the water dispenser is connected with the first cold water passage, the cold water enters the heating member through the first cold water passage, and after being heated, the hot water enters the water mixing valve through the hot water channel. At the same time, the second cold water passage is directly connected with the cold water channel, so that the cold water in the second cold water passage enters the water mixing valve. With the above structure, the hot water heated by the heating member and the cold water flowing in the second cold water passage can be mixed into warm water in the water mixing valve.

[0030] Preferably, the water dispenser further comprises a filter member, and a water source is connected with the first cold water passage and / or the second cold water passage through the filter member.

[0031] In the scheme, with the above structure, the impurities, bacteria, peculiar smell and other harmful substances in the water are effectively removed through the filter member, so that the health and safety of drinking water are ensured.

[0032] The positive progress effect of the utility model lies in:

[0033] The cold water channel or the hot water channel is connected with the mixed water cavity through a through hole, and the extension direction of the through hole is tangent to the cross section of the mixed water cavity, so that the water flow can form stable rotational flow when entering the mixed water cavity, thereby accelerating the mixing process of the cold water and the hot water, reducing water temperature fluctuation, and improving mixing uniformity. Meanwhile, the inner walls of the hot water channel or the cold water channel and the water outlet channel are designed in a spiral shape, further enhancing the rotational effect of the water flow, so that the mixed water flow maintains stable spiral motion when flowing out, reducing turbulence and water splashing, and improving the softness and comfort of the water outlet. In addition, the extension direction of the through hole is consistent with the water flow direction of the hot water channel or the cold water channel, reducing the resistance of the water flow when entering the mixed water cavity, reducing noise, and improving the smoothness of the water flow, ensuring efficient mixing under different water pressure conditions. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is a structure schematic view of the mixed water valve of the embodiment of the utility model.

[0035] Figure 2 It is a sectional view schematic view of the mixed water valve of the embodiment of the utility model.

[0036] Figure 3 It is a sectional structure schematic view of the mixed water valve of the embodiment of the utility model.

[0037] Figure 4 It is a schematic view of the water dispenser of the embodiment of the utility model.

[0038] BRIEF DESCRIPTION OF DRAWINGS

[0039] Water dispenser 1000

[0040] Mixed water valve 100

[0041] Cold water channel 1

[0042] Hot water channel 2

[0043] Water outlet channel 3

[0044] Mixed water cavity 4

[0045] Through hole 41

[0046] First built-in part 5

[0047] Second built-in part 6

[0048] Fifth built-in part 7

[0049] Heating part 200

[0050] Heating tank 2001

[0051] Electric heater 2002

[0052] First cold water passage 300

[0053] Second cold water passage 400

[0054] Filter 500

[0055] Pre-treatment filter element 5001

[0056] Membrane element 5002

[0057] Post-treatment filter element 5003 DETAILED DESCRIPTION

[0058] A preferred embodiment will be described below in conjunction with the accompanying drawings so as to more clearly and completely understand the present application.

[0059] As Figures 1 to 3 shown, the present embodiment provides a water mixing valve 100, which includes a cold water passage 1, a hot water passage 2, a water outlet passage 3, and a water mixing chamber 4. The wall surface of the water mixing chamber 4 is provided with a through hole 41, and the extension direction of the through hole 41 is tangent to the cross section of the water mixing chamber 4. For the connection of the cold water passage 1, the hot water passage 2, the water outlet passage 3, and the water mixing chamber 4, the cold water passage 1 can be connected to the water mixing chamber 4 through the through hole 41, and the hot water passage 2 and the water outlet passage 3 are directly connected to the water mixing chamber 4. The inner wall surface of the hot water passage 2 and the water outlet passage 3 is in a spiral shape, and one component of the extension direction of the through hole 41 is consistent with the water flow direction of the hot water passage 2 and the water outlet passage 3. Alternatively, the hot water passage 2 can be connected to the water mixing chamber 4 through the through hole 41, and the cold water passage 1 and the water outlet passage 3 are directly connected to the water mixing chamber 4. The inner wall surface of the cold water passage 1 and the water outlet passage 3 is in a spiral shape, and one component of the extension direction of the through hole 41 is consistent with the water flow direction of the cold water passage 1 and the water outlet passage 3. Specifically, the cold water passage 1 or the hot water passage 2 is connected to the water mixing chamber 4 through the through hole 41, and the extension direction of the through hole 41 is tangent to the cross section of the water mixing chamber 4, so that the water flow can form a stable rotational flow when entering the water mixing chamber 4, thereby accelerating the mixing process of cold water and hot water, reducing water temperature fluctuation, and improving mixing uniformity. At the same time, the inner wall of the hot water passage 2 or the cold water passage 1 and the water outlet passage 3 is designed in a spiral shape, which further enhances the rotational effect of the water flow, so that the mixed water flow maintains stable spiral motion when flowing out, reduces turbulence and splashing, and improves the softness and comfort of the water outlet. In addition, the extension direction of the through hole 41 is consistent with the water flow direction of the hot water passage 2 or the cold water passage 1, which reduces the resistance of the water flow when entering the water mixing chamber 4, reduces the noise, and improves the smoothness of the water flow, ensuring efficient mixing under different water pressure conditions.

[0060] In the present embodiment, as Figure 2 and Figure 3As shown, the cold water channel 1 is connected to the mixed water cavity 4 through the through hole 41, and the hot water channel 2 and the outlet water channel 3 are directly connected to the mixed water cavity 4; wherein the inner wall surface of the hot water channel 2 and the outlet water channel 3 is helical, and one component of the extension direction of the through hole 41 is consistent with the water flow direction of the hot water channel 2 and the outlet water channel 3. In other words, for this embodiment, the extension direction of the through hole 41 realizes that the cold water enters the mixed water cavity 4 in a spiral manner; the shape of the inner wall surface of the hot water channel 2 realizes that the hot water enters the mixed water cavity 4 in a spiral manner, and the cold water and the hot water both enter in a spiral manner, so that the cold water and the hot water are better mixed, the water temperature fluctuation is reduced, and the mixing uniformity is improved.

[0061] As shown in Figure 2 and Figure 3 When the inner wall surfaces of the cold water channel 1 and the outlet water channel 3 are both helical, the rotation directions of the inner wall surfaces of the cold water channel 1 and the outlet water channel 3 are the same; or when the inner wall surfaces of the hot water channel 2 and the outlet water channel 3 are both helical, the rotation directions of the inner wall surfaces of the hot water channel 2 and the outlet water channel 3 are the same. Specifically, when the inner wall surfaces of the cold water channel 1 and the outlet water channel 3 are both helical and have the same rotation direction, the mixing effect of the water flow and the use experience can be significantly optimized. When the cold water or the hot water enters the mixed water cavity 4, due to the helical guidance of the inner wall, the water flow will form a stable rotating motion, which can accelerate the uniform fusion of the two when mixed with hot water, reduce the local water temperature fluctuation, and thus improve the stability of the water temperature. At the same time, the helical inner wall surface of the outlet water channel 3 is consistent with the rotation direction of the hot water channel 2 or the cold water channel 1, so that the mixed water flow can maintain a stable rotating trajectory when flowing out, reduce turbulence and water splashing, make the outlet water more soft and concentrated, and improve the use comfort of the user. In addition, by adopting the above structure, the resistance of the water flow in the channel can be effectively reduced, the energy loss can be reduced, and it is ensured that the water flow can flow smoothly under different water pressure conditions. The rotating motion of the water flow not only improves the mixing efficiency, but also reduces the impact force of the water flow on the inner wall of the channel, thereby reducing the noise and providing a more quiet use environment for the user.

[0062] Since the cold water channel 1 is connected to the mixed water cavity 4 through the through hole 41, and the hot water channel 2 and the outlet water channel 3 are directly connected to the mixed water cavity 4 in this embodiment, the inner wall surfaces of the hot water channel 2 and the outlet water channel 3 are both helical, and the rotation directions of the two inner wall surfaces are the same.

[0063] As shown in Figure 3As shown, the cross-sectional area of the through hole 41 gradually decreases from the direction away from the mixing chamber 4 to the direction close to the mixing chamber 4. Specifically, when the water flow passes through the tapered through hole 41, the flow rate gradually increases due to the decrease of the cross-sectional area, thereby forming a stronger momentum exchange when entering the mixing chamber 4, accelerating the mixing process of cold water and hot water, making the water temperature more uniform, reducing local temperature difference and water temperature fluctuation. In addition, by adopting the above structure, the impact force of the water flow on the inner wall of the through hole 41 can be effectively reduced, the generation of water noise can be reduced, and a more quiet use environment can be provided for the user. The tapered through hole 41 helps to optimize the flow state of the water flow, reduce turbulence and vortex phenomenon, and make the water flow more smooth, thereby reducing energy loss and improving the flow capacity of the water flow. The acceleration effect of the water flow can also enhance the rotational motion, and when the cold water or hot water enters the mixing chamber 4 through the through hole 41, the rotational water flow can further improve the mixing efficiency, so that the mixed water flow maintains a stable rotational trajectory when discharging, reduces water splashing, and improves the softness of the discharged water.

[0064] As shown in FIG. 1, the cold water channel 1 is connected to the mixing chamber 4 through the through hole 41, and the cross-sectional area of the first water flow channel of the hot water channel 2 is greater than the cross-sectional area of the second water flow channel of the mixing chamber 4. Figure 2 As shown, when the cold water channel 1 is connected to the mixing chamber 4 through the through hole 41, the cross-sectional area of the first water flow channel of the hot water channel 2 is greater than the cross-sectional area of the second water flow channel of the mixing chamber 4; Specifically, when the water flow enters the mixing chamber 4 with smaller cross-sectional area, the flow rate will increase, thereby accelerating the mixing process of cold water and hot water, making the water temperature more uniform, reducing local temperature difference and water temperature fluctuation, and improving the stability of water temperature. By adopting the above structure, the impact force of the water flow on the inner wall of the channel can be effectively reduced, the generation of water noise can be reduced, and a more quiet use environment can be provided for the user.

[0065] In other embodiments, when the hot water channel 2 is connected to the mixing chamber 4 through the through hole 41, the cross-sectional area of the third water flow channel of the cold water channel 1 is greater than the cross-sectional area of the fourth water flow channel of the mixing chamber 4.

[0066] As shown in FIG. 1, the cold water channel 1 is connected to the mixing chamber 4 through the through hole 41, and the cross-sectional area of the first water flow channel of the hot water channel 2 is greater than the cross-sectional area of the second water flow channel of the mixing chamber 4. Figure 2 As shown, for this embodiment, the mixing valve 100 further comprises a first built-in part 5 and a second built-in part 6, the first built-in part 5 is arranged in the hot water channel 2 and forms a first water flow channel between the first built-in part 5 and the hot water channel 2, and the second built-in part 6 is arranged in the mixing chamber 4 and forms a second water flow channel between the second built-in part 6 and the mixing chamber 4; wherein the cross-sectional area of the hot water channel 2 is not less than the cross-sectional area of the mixing chamber 4, and the cross-sectional area of the first built-in part 5 is greater than the cross-sectional area of the second built-in part 6.

[0067] It needs to be specifically pointed out that in specific use, the water mixing valve 100 further comprises a fifth built-in part 7. The fifth built-in part 7 is arranged in the water outlet channel 3, and a fifth water flow channel is formed between the fifth built-in part 7 and the water outlet channel 3, and the cross-sectional area of the fifth water flow channel is smaller than that of the second water flow channel, so as to further accelerate the flow rate. For this embodiment, the first built-in part 5 is coaxial with the hot water channel 2, and the second built-in part 6 is coaxial with the water mixing cavity 4; the above structure makes the transition of water flow between the hot water channel 2 and the water mixing cavity 4 more stable, reduces the turbulence and vortex phenomenon when the water flow enters the water mixing cavity 4, and thus improves the stability of the water flow. When the water flow flows in the coaxial channel, it can maintain uniform flow rate and pressure distribution, reduce local water pressure fluctuation, and ensure the uniformity and stability of water temperature.

[0068] In this embodiment, the first built-in part 5, the second built-in part 6 and the fifth built-in part 7 are integrally formed, thereby improving the structural strength.

[0069] In other embodiments, the water mixing valve 100 further comprises a third built-in part and a fourth built-in part, the third built-in part is arranged in the cold water channel 1 and forms a third water flow channel between the third built-in part and the cold water channel 1, and the fourth built-in part is arranged in the water mixing cavity 4 and forms a fourth water flow channel between the fourth built-in part and the water mixing cavity 4; wherein the cross-sectional area of the cold water channel 1 is not less than that of the water mixing cavity 4, and the cross-sectional area of the third built-in part is greater than that of the fourth built-in part. In order to maintain uniform flow rate and pressure distribution, the third built-in part is preferably coaxial with the cold water channel 1, and the fourth built-in part is coaxial with the water mixing cavity 4.

[0070] As shown in Figure 2 and Figure 3 , the number of through holes 41 is multiple, and the multiple through holes 41 are arranged along the circumferential direction of the wall surface of the water mixing cavity 4 and the extension direction of the water mixing cavity 4. The above structure makes the cold water or hot water enter the water mixing cavity 4 uniformly from multiple directions, thereby accelerating the mixing process of cold water and hot water, making the water temperature more uniform, reducing local temperature difference and water temperature fluctuation, and improving the stability of water temperature. In addition, when the water flow enters the water mixing cavity 4 through the multiple through holes 41, multiple water flow intersection points can be formed, the rotation effect of the water flow is enhanced, and the mixing efficiency is further improved.

[0071] As shown in Figure 4As shown, the embodiment provides a water dispenser 1000, which comprises a mixing valve 100. Specifically, the mixing valve 100 is applied to the water dispenser 1000. With the above structure, the cold water channel 1 or the hot water channel 2 is connected to the mixing chamber 4 through the through hole 41, and the extension direction of the through hole 41 is tangent to the cross section of the mixing chamber 4, so that the water flow can form a stable rotational flow when entering the mixing chamber 4, thereby accelerating the mixing process of cold water and hot water, reducing water temperature fluctuation, and improving mixing uniformity. At the same time, the inner walls of the hot water channel 2 or the cold water channel 1 and the water outlet channel 3 are designed in a spiral shape, further enhancing the rotational effect of the water flow, so that the mixed water flow maintains stable spiral motion when flowing out, reducing turbulence and water splashing, and improving the softness and comfort of the water outlet. In addition, the extension direction of the through hole 41 is consistent with the water flow direction of the hot water channel 2 or the cold water channel 1, reducing the resistance of the water flow entering the mixing chamber 4, reducing noise, and improving the smoothness of the water flow, ensuring efficient mixing under different water pressure conditions.

[0072] As shown in the Figure 4 water dispenser 1000 comprises a heating element 200, a first cold water passage 300, and a second cold water passage 400, the first cold water passage 300 is connected to the water inlet of the heating element 200, the heating element 200 is used for heating cold water, the water outlet of the heating element 200 is connected to the hot water channel 2, and the second cold water passage 400 is connected to the cold water channel 1. Specifically, the heating element 200 inside the water dispenser 1000 is connected to the first cold water passage 300, cold water enters the heating element 200 through the first cold water passage 300, after being heated, hot water enters the mixing valve 100 through the hot water channel 2. At the same time, the second cold water passage 400 is directly connected to the cold water channel 1, so that the cold water in the second cold water passage 400 enters the mixing valve 100. With the above structure, the hot water heated by the heating element 200 and the cold water flowing in the second cold water passage 400 can be mixed into warm water in the mixing valve 100.

[0073] In this embodiment, the heating element 200 comprises a heating tank 2001 and an electric heater 2002, and the water inlet of the heating tank 2001 is connected to the first cold water passage 300, the water outlet in the heating tank 2001 is connected to the hot water channel 2, and the electric heater 2002 is arranged in the heating tank 2001 for heating the cold water in the heating tank 2001.

[0074] As shown in the Figure 4 water dispenser 1000 further comprises a filter 500, and the water source is connected to the first cold water passage 300 and the second cold water passage 400 through the filter 500. With the above structure, the filter 500 is used for purification treatment, thereby effectively removing impurities, bacteria, odors and other harmful substances in water, ensuring the health and safety of drinking water.

[0075] In the embodiment, the filter 500 comprises a pre-treatment filter element 5001, a membrane element 5002 and a post-treatment filter element 5003; the water source is communicated with the first cold water passage 300 and the second cold water passage 400 through the pre-treatment filter element 5001, the membrane element 5002 and the post-treatment filter element 5003 in sequence.

[0076] Although the specific embodiments of the present application are described above, those skilled in the art should understand that this is only an example, the protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application, but these changes and modifications all fall within the protection scope of the present application.

Claims

1. A mixing valve, characterized in that, The mixing valve includes a cold water channel, a hot water channel, a water outlet channel, and a mixing chamber. The wall of the mixing chamber has a through hole, and the extending direction of the through hole is tangent to the cross-section of the mixing chamber. The cold water channel is connected to the mixing chamber through the through hole, the hot water channel and the outlet channel are directly connected to the mixing chamber, the inner wall of the hot water channel and / or the outlet channel is spiral, and one component of the extension direction of the through hole is consistent with the water flow direction of the hot water channel and / or the outlet channel. Alternatively, the hot water channel is connected to the mixing chamber through the through hole, the cold water channel and the outlet channel are directly connected to the mixing chamber, the inner wall of the cold water channel and / or the outlet channel is spiral-shaped, and one component of the extension direction of the through hole is consistent with the water flow direction of the cold water channel and / or the outlet channel.

2. The mixing valve as described in claim 1, characterized in that, When the inner wall surfaces of both the cold water channel and the outlet channel are spiral-shaped, the spiral directions of the inner wall surfaces of the cold water channel and the outlet channel are the same. Alternatively, when the inner walls of both the hot water channel and the outlet channel are spiral-shaped, the spiral directions of the inner walls of the hot water channel and the outlet channel are the same.

3. The mixing valve as described in claim 1, characterized in that, The cross-sectional area of ​​the through hole gradually decreases from the direction away from the mixing chamber to the direction closer to the mixing chamber.

4. The mixing valve as described in claim 1, characterized in that, When the cold water channel is connected to the mixing chamber through the through hole, the cross-sectional area of ​​the first water flow channel of the hot water channel is larger than the cross-sectional area of ​​the second water flow channel of the mixing chamber. Alternatively, when the hot water channel is connected to the mixing chamber through the through hole, the cross-sectional area of ​​the third water flow channel of the cold water channel is greater than the cross-sectional area of ​​the fourth water flow channel of the mixing chamber.

5. The mixing valve as described in claim 4, characterized in that, The mixing valve further includes a first built-in component and a second built-in component. The first built-in component is disposed in the hot water channel, and a first water flow channel is formed between the first built-in component and the hot water channel. The second built-in component is disposed in the mixing chamber, and a second water flow channel is formed between the second built-in component and the mixing chamber. The cross-sectional area of ​​the hot water channel is not less than the cross-sectional area of ​​the mixing chamber, and the cross-sectional area of ​​the first built-in component is greater than the cross-sectional area of ​​the second built-in component. Alternatively, the mixing valve may further include a third built-in component and a fourth built-in component. The third built-in component is disposed within the cold water channel, forming a third water flow channel between the third built-in component and the cold water channel. The fourth built-in component is disposed within the mixing chamber, forming a fourth water flow channel between the fourth built-in component and the mixing chamber. The cross-sectional area of ​​the cold water channel is not less than the cross-sectional area of ​​the mixing chamber, and the cross-sectional area of ​​the third built-in component is greater than the cross-sectional area of ​​the fourth built-in component.

6. The mixing valve as described in claim 5, characterized in that, The first built-in component is coaxial with the hot water channel; and / or, the second built-in component is coaxial with the mixing chamber; Alternatively, the third built-in component may be coaxial with the cold water channel; And / or, the fourth built-in component is coaxial with the mixing chamber.

7. The mixing valve as described in claim 1, characterized in that, The number of through holes is multiple, and the multiple through holes are spaced apart along the circumferential direction of the wall of the mixing chamber and / or the extension direction of the mixing chamber.

8. A water dispenser, characterized in that, The water dispenser includes a mixing valve as described in any one of claims 1-7.

9. The water dispenser as described in claim 8, characterized in that, The water dispenser includes a heating element, a first cold water passage, and a second cold water passage. The first cold water passage is connected to the inlet of the heating element, which is used to heat cold water. The outlet of the heating element is connected to the hot water passage, and the second cold water passage is connected to the cold water passage.

10. The water dispenser as described in claim 9, characterized in that, The water dispenser also includes a filter element, through which the water source is connected to the first cold water passage and / or the second cold water passage.

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