Mixing valve and water system with return water, water temperature regulation and flow regulation functions

Abstract

The present application relates to a water mixing valve and a water use system with return water, water temperature regulation and flow regulation functions, wherein the water mixing valve comprises: a fixed valve plate, a first movable valve plate and a second movable valve plate, the first movable valve plate abuts against the fixed valve plate in a manner that it can pivot around a pivot axis, the second movable valve plate abuts against the first movable valve plate in a manner that it can move in a first direction, and the pivot axis is perpendicular to the first direction; the fixed valve plate has a first surface abutting against the first movable valve plate, the first movable valve plate has a second surface abutting against the fixed valve plate and a third surface abutting against the second movable valve plate, and the second movable valve plate has a fourth surface abutting against the first movable valve plate; a first cold water hole, a first hot water hole, a first mixing water hole and a return water hole extending to the first surface are provided through the fixed valve plate, a second mixing water hole and a third mixing water hole extending from the second surface to the third surface are provided through the first movable valve plate, a return water groove recessed inwardly from the second surface is provided on the first movable valve plate, and a mixing water groove recessed inwardly from the fourth surface is provided on the second movable valve plate.

Description

Technical Field

[0001] The present application relates to a water mixing valve and a water use system with return water, water temperature regulation and flow regulation functions. Background Art

[0002] A mixing valve is a valve used to adjust the flow ratio of cold and hot water, and thus adjust the temperature of the mixed cold and hot water. It is widely used in systems such as faucets and showers. There is room for further optimization of the structure and function of traditional mixing valves. Summary of the invention

[0003] The technical problem solved by the present application is to provide a water mixing valve and a water use system with return water, water temperature regulation and flow regulation functions.

[0004] The technical solution of this application is:

[0005] In a first aspect, a water mixing valve with return water, water temperature regulation and flow regulation functions is provided, comprising: a fixed valve plate, a first movable valve plate and a second movable valve plate, wherein:

[0006] The first movable valve plate is abutted against the fixed valve plate in a manner that it can pivot about a pivot axis, and the second movable valve plate is abutted against the first movable valve plate in a manner that it can move in a first direction, wherein the pivot axis is perpendicular to the first direction;

[0007] The fixed valve plate has a first surface abutting against the first movable valve plate, the first movable valve plate has a second surface abutting against the fixed valve plate and a third surface abutting against the second movable valve plate, and the second movable valve plate has a fourth surface abutting against the first movable valve plate;

[0008] The fixed valve plate is provided with a first cold water hole, a first hot water hole, a first mixing water hole and a return water hole extending to the first surface, the first movable valve plate is provided with a second mixing water hole and a third mixing water hole extending from the second surface to the third surface, the first movable valve plate is provided with a return water groove recessed inward from the second surface, and the second movable valve plate is provided with a mixing water groove recessed inward from the fourth surface;

[0009] When the first movable valve plate and the fixed valve plate are in a first relative position, the first hot water hole and the return water hole are both connected to the return water groove, and the first cold water hole is blocked by the first movable valve plate;

[0010] When the first movable valve plate and the fixed valve plate are in a second relative position, the first cold water hole is connected to the second mixing water hole, the first hot water hole is blocked by the first movable valve plate, and the first mixing water hole is connected to the third mixing water hole;

[0011] When the first movable valve plate and the fixed valve plate are in a third relative position, the first cold water hole is blocked by the first movable valve plate, the first hot water hole is connected to the second mixing water hole, and the first mixing water hole is connected to the third mixing water hole;

[0012] When the first movable valve disc and the fixed valve disc are in a fourth relative position, the first cold water hole and the first hot water hole are both connected to the second mixing water hole, and the first mixing water hole is connected to the third mixing water hole; and at the fourth relative position, a ratio of a connecting area between the first cold water hole and the second mixing water hole and a connecting area between the first hot water hole and the second mixing water hole changes in response to the first movable valve disc pivoting around the pivot axis;

[0013] When the second movable valve plate is in a sixth relative position with the first movable valve plate, the second water mixing hole and the third water mixing hole are both connected to the water mixing groove; and in the sixth relative position, the connection area between the second water mixing hole and the water mixing groove changes in response to the second movable valve plate moving in the first direction.

[0014] In an optional design, when the first movable valve plate and the fixed valve plate are in a fifth relative position, the first cold water hole and the first hot water hole are both connected to the return water tank.

[0015] In an optional design, when the second movable valve plate is in the seventh relative position with the first movable valve plate, the second water mixing hole and / or the third water mixing hole are blocked by the second movable valve plate.

[0016] In an optional design, the first orifice of the first cold water hole on the first surface, the second orifice of the first hot water hole on the first surface, the third orifice of the return water hole on the first surface, the fourth orifice of the second mixing water hole on the second surface, and the first notch of the return water groove on the second surface are all arranged on the same cylindrical surface, and the axis of the cylindrical surface coincides with the pivot axis.

[0017] In an optional design, the fifth orifice of the first water mixing hole on the first surface and the sixth orifice of the third water mixing hole on the second surface are both arranged on the pivot axis.

[0018] In an optional design, the third water mixing hole is arranged at the seventh orifice of the third surface on the pivot axis, and the water mixing trough includes a first trough body and a second trough body arranged along the first direction, and the first trough body includes a middle trough section in the first direction, and a left trough section and a right trough section located on opposite sides of the middle trough section.

[0019] In an optional design, the first orifice, the second orifice and the third orifice are arranged adjacent to each other in sequence in a direction surrounding the pivot axis, the first trough body is an arc-shaped trough body, the second water mixing hole has an eighth orifice on the third surface, and the pivot arc of the eighth orifice between the second relative position and the fourth relative position is ≤ the arc of the arc-shaped trough body.

[0020] In an optional design, a worm gear with an outer gear ring structure is fixedly arranged on the periphery of the first movable valve plate, and the first motor is connected to a worm gear meshed with the worm gear to drive the first movable valve plate to pivot around the pivot axis;

[0021] It also includes a valve housing, which has a guide groove extending along the first direction, the second movable valve plate is movably embedded in the guide groove, and a wheel groove extending in the second direction is formed on the fifth surface of the second movable valve plate facing away from the fourth surface, and the second motor is connected to the eccentric wheel, and the eccentric wheel is movably arranged in the wheel groove in a manner that it can move in the second direction, wherein the second direction is respectively perpendicular to the pivot axis and the first direction.

[0022] In a second aspect, a water use system is proposed, comprising:

[0023] case,

[0024] A cold water flow channel, a hot water flow channel, a mixed water flow channel and a return water flow channel are arranged in the shell, and

[0025] A hot and cold water valve as described in the first aspect disposed in the housing;

[0026] Wherein, the cold water flow channel, the hot water flow channel, the mixed water flow channel and the return water flow channel are respectively connected to the first cold water hole, the first hot water hole, the first mixed water hole and the return water hole.

[0027] In an optional design, the cold water flow channel and the hot water flow channel both have water inlet joints extending out of the shell, and the mixed water flow channel and the return water flow channel both have water outlet joints extending out of the shell.

[0028] This application has at least the following beneficial effects:

[0029] The mixing valve of the present application not only has the function of water temperature regulation, but also has the functions of flow regulation and water return. When the water temperature in the hot water flow channel is insufficient due to the heat dissipation of cold water, the cooling water that has lost temperature in the hot water flow channel can be quickly led out, so that the hot water that has not lost temperature upstream can be quickly replenished to the hot water flow channel, especially the water outlet of the hot water flow channel, so as to quickly increase the water temperature of the hot water flow channel in a short time, which helps the subsequent water outlet temperature at the water use terminal to be close to the ideal temperature required by the user, and is very suitable for water systems with automatic adjustment requirements for water temperature and flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present application, rather than limiting the present application.

[0031] Figure 1 It is an overall schematic diagram of the water use system in the embodiment of the present application.

[0032] Figure 2 yes Figure 1 Partial cross-sectional view of the recycled water system.

[0033] Figure 3 yes Figure 1 Partial cross-sectional view of the recycled water system.

[0034] Figure 4 yes Figure 1 Partial schematic diagram of the water system.

[0035] Figure 5 yes Figure 4 A partial exploded view of the .

[0036] Figure 6 yes Figure 1 Partial schematic diagram of the water system.

[0037] Figure 7 It is a partial schematic diagram of the water mixing valve in the embodiment of the present application.

[0038] Figure 8 It is a partial exploded view of the water mixing valve in the embodiment of the present application.

[0039] Fig. 9 It is a partial exploded view of the water mixing valve in the embodiment of the present application.

[0040] Fig.10 It is a partial exploded view of the water mixing valve in the embodiment of the present application.

[0041] Fig.11 It is a schematic diagram of a water mixing valve in an embodiment of the present application when the first movable valve plate and the fixed valve plate are in a first relative position.

[0042] Fig.12 It is a schematic diagram of a water mixing valve in an embodiment of the present application when the first movable valve plate and the fixed valve plate are in a second relative position.

[0043] Fig.13 It is a schematic diagram of a water mixing valve in an embodiment of the present application when the first movable valve plate and the fixed valve plate are in a third relative position.

[0044] Fig.14It is a schematic diagram of the first movable valve plate and the fixed valve plate of the water mixing valve in the embodiment of the present application when they are in the fourth relative position. In the figure, the connecting area between the first cold water hole and the second water mixing hole is larger than the connecting area between the first hot water hole and the second water mixing hole.

[0045] Fig.15 It is a schematic diagram of the first movable valve plate and the fixed valve plate of the water mixing valve in the embodiment of the present application when they are in the fourth relative position. In the figure, the connecting area between the first cold water hole and the second water mixing hole is equal to the connecting area between the first hot water hole and the second water mixing hole.

[0046] Fig.16 It is a schematic diagram of the first movable valve plate and the fixed valve plate of the water mixing valve in the embodiment of the present application when they are in the fourth relative position. In the figure, the connecting area between the first cold water hole and the second water mixing hole is smaller than the connecting area between the first hot water hole and the second water mixing hole.

[0047] Fig.17 It is a schematic diagram of a water mixing valve in an embodiment of the present application when the first movable valve plate and the fixed valve plate are in the fifth relative position.

[0048] Fig.18 It is a cross-sectional schematic diagram when the second movable valve plate and the first movable valve plate of the water mixing valve in the embodiment of the present application are in the sixth relative position.

[0049] Fig.19 : is a cross-sectional schematic diagram of the mixing valve in the embodiment of the present application when the second movable valve plate and the first movable valve plate are in the sixth relative position; wherein, Fig.18 The connecting area between the second mixing hole and the mixing tank is greater than Fig.19 The connecting area between the second water mixing hole and the water mixing tank.

[0050] Fig. 20 It is a cross-sectional schematic diagram when the second movable valve plate and the first movable valve plate of the water mixing valve in the embodiment of the present application are in the seventh relative position.

[0051] Description of reference numerals:

[0052] c-pivot axis, f1-first direction, f2-second direction;

[0053] 1-cold water flow channel, 2-hot water flow channel, 3-mixing water flow channel, 4-return water flow channel, 5-water terminal, 6-mixing valve, 7-water temperature sensor, 9-housing, 10-basin;

[0054] 101-cold water connector, 201-hot water connector, 301-mixing water connector, 401-return water connector;

[0055] 601-fixed valve plate, 602-first movable valve plate, 603-second movable valve plate, 604-valve housing, 605-first motor, 606-second motor, 607-worm gear, 608-worm, 609-eccentric wheel;

[0056] 601a-first surface, 602a-second surface, 602b-third surface, 603a-fourth surface, 603b-fifth surface;

[0057] 6041-guide groove;

[0058] 6032-wheel groove;

[0059] 6011-first cold water hole, 6012-first hot water hole, 6013-return water hole, 6014-first mixing water hole;

[0060] 6021-return water tank, 6022-second water mixing hole, 6023-third water mixing hole;

[0061] 6031-mixing tank; 6031a-first tank body, 6031b-second tank body, 6031a1-middle tank section, 6031a2-left tank section, 6031a3-right tank section;

[0062] 6011a - first orifice, 6012a - second orifice, 6013a - third orifice, 6022a - fourth orifice, 6014a - fifth orifice, 6021a - first slot, 6023a - sixth orifice, 6023b - seventh orifice, 6022b - eighth orifice. DETAILED DESCRIPTION

[0063] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the embodiment of the present application will be clearly and completely described below in conjunction with the drawings of the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, rather than all the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of this application. It can be understood that, in the absence of conflict, some technical means of the various embodiments described herein can be replaced or combined with each other.

[0064] In the description of the specification and claims of this application, if there are terms such as "first", "second", etc., they are only used to distinguish the objects described and do not have any order or technical meaning. Therefore, an object defined as "first", "second", etc. may explicitly or implicitly include one or more of the objects. In addition, similar words such as "one" or "a" do not indicate a quantitative limitation, but rather indicate the existence of at least one, and "multiple" means not less than two. The "multiple" mentioned in this application means not less than two.

[0065] In the description of the specification and claims of this application, if there are terms such as "connect", "install", "fix", "contain", etc., unless otherwise specified, they should be understood in a broad sense. For example, "connection" can be a separate connection or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a non-detachable connection or a detachable connection. For another example, "contain" does not necessarily mean complete containment of the whole. The concept also includes the partial containment of a part protruding from the outside. For those skilled in the art, the specific meanings of the aforementioned terms in this application can be understood according to the specific circumstances.

[0066] In the description of the specification and claims of this application, if there are terms such as "upper", "lower", "horizontal" and the like indicating an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the application clearly and simply, and does not indicate or imply that the elements referred to must have a specific direction, be constructed and operated in a specific orientation. These directional terms are relative concepts, used for relative description and clarification, and may change accordingly according to the change in the orientation of the components placed in the drawings. For example, if the device in the figure is turned over, the elements described as "below" other elements will be positioned "above" other elements.

[0067] In the description of the specification and claims of this application, if the terms "sequentially" or "in sequence" appear, for example, the phrase "A, B, C arranged sequentially" only indicates the arrangement order of elements A, B, C, and does not exclude the possibility of arranging other elements between A and B and / or between B and C.

[0068] In the description of the specification and claims of this application, if there is a term "based on" or "according to", it is used to describe one or more factors that affect the determination. The term does not exclude additional factors that affect the determination. That is, the determination may be based only on these factors or at least partially on these factors. For example, the phrase "based on A, B is determined". In this case, A is a factor that affects the determination of B. This phrase does not exclude that the determination of B may also be based on C.

[0069] In the description of the specification and claims of the present application, the term "responsive to" and related terms refer to a signal or event being affected to a certain extent by another signal or event, but not necessarily completely or directly. If event A occurs "responsive to" event B, A may directly or indirectly respond to B. For example, the occurrence of B may eventually lead to the occurrence of A, but there may be other intermediate events and / or conditions. In other cases, B may not necessarily lead to the occurrence of A, and A may occur even if B has not yet occurred. In addition, the term "responsive to" can also mean "at least partially responsive to". The term "determine" covers a wide range of actions, which may include calculation, calculation, processing, derivation, investigation, search (e.g., search in a table, database or other data structure), ascertainment, and similar actions, and may also include receiving (e.g., receiving information), accessing (e.g., accessing data in a memory) and similar actions, as well as parsing, selecting, selecting, establishing and similar actions, etc. The relevant definitions of other terms will be given in the following description.

[0070] In the description of the specification and claims of this application, if the term "if" is present, it can generally be interchanged with "when" or "at" or "in response to determining" or "in response to detecting", depending on the context.

[0071] In the description of the specification and claims of this application, if the term "configured to" is present, it can generally be interchanged with "having the ability to", "designed to", "for" or "capable of", depending on the context.

[0072] Now, embodiments of the present application are described with reference to the accompanying drawings.

[0073] Figures 1 to 20 A specific embodiment of the water use system of the present application is shown, which includes a cold water flow channel 1, a hot water flow channel 2, a mixed water flow channel 3, a return water flow channel 4 and a water use terminal 5. The water use terminal 5 is a faucet, which has a water outlet connected to the mixed water flow channel 3. The water outlet end of the cold water flow channel 1 and the water outlet end of the hot water flow channel 2 are connected to the water inlet end of the mixed water flow channel 3 through the same mixing valve 6, that is, the mixing valve 6 is connected to both the cold water flow channel 1 and the mixed water flow channel 3, and also to the hot water flow channel 2 and the mixed water flow channel 3. In addition, the water inlet end of the return water flow channel 4 is also connected to the hot water flow channel 2 through the aforementioned mixing valve 6.

[0074] In this embodiment, the mixing valve 6 is used to adjust the ratio of the connecting area between the cold water flow channel 1 and the mixing water flow channel 3 and the connecting area between the hot water flow channel 2 and the mixing water flow channel 3, thereby adjusting the ratio of cold and hot water entering the mixing water flow channel 3, so as to obtain the ideal water temperature in the mixing water flow channel 3 and transport it to the water terminal 5 to meet the user's demand for water temperature. The mixing valve 6 is also used to selectively open or disconnect the connection between the return water flow channel 4 and the hot water flow channel 2. In addition, the mixing valve 6 is also used to adjust the flow rate of the mixing water flow channel 3. See the following description for details.

[0075] In this embodiment, the water terminal 5 is specifically a faucet connected to the water outlet of the mixing water channel 3, which has a water outlet. When in use, water flowing from the cold water channel 1 and / or the hot water channel 2 into the mixing water channel 3 is sent to the faucet for use by the user. In other embodiments, the water terminal 5 is a shower for bathing. It can be understood that a part of the mixing water channel 3 is formed inside the faucet serving as the water terminal 5.

[0076] Reference Figures 3 to 10 As shown, the water mixing valve 6 includes a fixed valve plate 601, a first movable valve plate 602 and a second movable valve plate 603, wherein:

[0077] The first movable valve disc 602 is abutted against the fixed valve disc 601 in a manner that it can pivot around the pivot axis c, that is, the first movable valve disc 602 is arranged in abutment with the fixed valve disc 601, and the first movable valve disc 602 can pivot relative to the fixed valve disc 601 around the pivot axis c. The second movable valve disc 603 is abutted against the first movable valve disc 602 in a manner that it can move in the first direction f1, that is, the second movable valve disc 603 is arranged in abutment with the first movable valve disc 602, and the second movable valve disc 603 can move relative to the second movable valve disc 603 (and the fixed valve disc 601) in the first direction f1. In addition, the aforementioned pivot axis c is perpendicular to the first direction f1. The fixed valve disc 601 has a first surface 601a abutting against the first movable valve disc 602. The first movable valve disc 602 has a second surface 602a abutting against the fixed valve disc 601 and a third surface 602b abutting against the second movable valve disc 603. The second movable valve disc 603 has a fourth surface 603a that is in contact with the first movable valve disc 602. The fixed valve disc 601 is provided with a first cold water hole 6011, a first hot water hole 6012, a first water mixing hole 6014, and a water return hole 6013 extending to the first surface 601a. ​​The first movable valve disc 602 is provided with a second water mixing hole 6022 and a third water mixing hole 6023 extending from the second surface 602a to the third surface 602b. The first movable valve disc 602 is provided with a water return groove 6021 that is recessed inward from the second surface 602a. The second movable valve disc 603 is provided with a water mixing groove 6031 that is recessed inward from the fourth surface 603a.

[0078] The cold water channel 1, the hot water channel 2, the mixed water channel 3 and the return water channel 4 are connected to the first cold water hole 6011, the first hot water hole 6012, the first mixed water hole 6014 and the return water hole 6013 respectively.

[0079] When the first movable valve disc 602 and the fixed valve disc 601 are in the first relative position, the first hot water hole 6012 and the return water hole 6013 are both connected to the return water groove 6021, and the first cold water hole 6011 is blocked by the first movable valve disc 602. Fig.11 And refer to Figure 8-Figure 10 In this state, the water in the cold water channel 1 is blocked by the second surface 602a of the first movable valve plate 602, and the return water groove 6021 connects the first hot water hole 6012 and the return water hole 6013, and the water (such as cooling water of hot water) sent from the hot water channel 2 to the first hot water hole 6012 can flow to the return water hole 6013 through the return water groove 6021 and be drawn out from the return water hole 6013.

[0080] When the first movable valve disc 602 and the fixed valve disc 601 are in the second relative position, the first cold water hole 6011 is connected to the second mixing water hole 6022, the first hot water hole 6012 is blocked by the first movable valve disc 602, and the first mixing water hole 6014 is connected to the third mixing water hole. Fig.12 And refer to Figure 8-Figure 10 In this state, the water in the cold water channel 1 can flow into the second water mixing hole 6022 , while the water in the hot water channel 2 is blocked by the second surface 602 a of the first movable valve plate 602 .

[0081] When the first movable valve disc 602 and the fixed valve disc 601 are in the third relative position, the first cold water hole 6011 is blocked by the first movable valve disc 602, the first hot water hole 6012 is connected to the second mixing water hole 6022, and the first mixing water hole 6014 is connected to the third mixing water hole. Fig.13 Also see Figure 8-Figure 10 In this state, water in the hot water flow channel 2 can flow into the second water mixing hole 6022 , while water in the cold water flow channel 1 is blocked by the second surface 602 a of the first movable valve plate 602 .

[0082] When the first movable valve plate 602 and the fixed valve plate 601 are in the fourth relative position, the first cold water hole 6011 and the first hot water hole 6012 are both connected to the second mixing water hole 6022, and the first mixing water hole 6014 is connected to the third mixing water hole. Figure 14-16 And refer to Figure 8-Figure 10As shown. And at the fourth relative position (i.e., on the premise that the first cold water hole 6011 and the first hot water hole 6012 are both connected to the second mixed water hole 6022, and the first mixed water hole 6014 is connected to the third mixed water hole), the ratio of the connecting area between the first cold water hole 6011 and the second mixed water hole 6022 and the connecting area between the first hot water hole 6012 and the second mixed water hole 6022 can be adjusted by pivoting the first movable valve plate 602 around the pivot axis c (small angle). That is, at the fourth relative position, the ratio of the connecting area between the first cold water hole 6011 and the second mixed water hole 6022 and the connecting area between the first hot water hole 6012 and the second mixed water hole 6022 changes in response to the pivoting of the first movable valve plate 602 around the pivot axis c, thereby adjusting the water temperature of the mixed water flow channel 3.

[0083] When the first movable valve plate 602 and the fixed valve plate 601 are in the fifth relative position, the first cold water hole 6011 and the first hot water hole 6012 are both connected to the return water tank. Fig.17 And refer to Figure 8-Figure 10 In this state, water in the cold water flow channel 1 and the hot water flow channel 2 are both blocked by the first movable valve plate 602 .

[0084] When the second movable valve plate 603 and the first movable valve plate 602 are in the sixth relative position, the second water mixing hole 6022 and the third water mixing hole 6023 are both connected to the water mixing groove 6031. Fig.18 , Fig.19 Also see Figure 8-Figure 10 As shown. In this state, the water mixing groove 6031 connects the second water mixing hole 6022 and the third water mixing hole 6023. If the first movable valve plate 602 and the fixed valve plate 601 are at the second relative position, the third relative position or the fourth relative position, the cold water and / or hot water flowing into the second water mixing hole 6022 will flow to the water mixing channel 3 through the water mixing groove 6031, the third water mixing hole 6023 and the water mixing groove 6031 in sequence. If the first movable valve plate 602 and the fixed valve plate 601 are at the first relative position or the fifth relative position, although the second water mixing hole 6022, the water mixing groove 6031, the third water mixing hole 6023 and the first water mixing hole 6014 are connected in sequence, since the water in the cold water channel 1 and the hot water channel 2 cannot enter the second water mixing hole 6022, no water will flow to the water mixing channel 3. And at the sixth relative position (i.e., under the premise that the second water mixing hole 6022 and the third water mixing hole 6023 are both connected to the water mixing groove 6031), the connection area between the second water mixing hole 6022 and the water mixing groove 6031 can be adjusted by moving the second movable valve plate 603 in the first direction f1. That is, at the sixth relative position, the connection area between the second water mixing hole 6022 and the water mixing groove 6031 changes in response to the movement of the second movable valve plate 603 in the first direction f1, thereby adjusting the flow rate of the water mixing channel 3.

[0085] When the second movable valve disc 603 and the first movable valve disc 602 are in the seventh relative position, the second water mixing hole 6022 is blocked by the second movable valve disc 603. Fig. 20 And refer to Figure 8-Figure 10 As shown. In this state, even if the first movable valve disc 602 and the fixed valve disc 601 are in the second relative position, the third relative position or the fourth relative position, and the third water mixing hole 6023 is connected to the water mixing groove 6031, because the second water mixing hole 6022 is blocked by the second movable valve disc 603, the water flowing to the water mixing groove 6031 is blocked by the third surface 602b of the first movable valve disc 602 and cannot flow to the third water mixing hole 6023. It can be seen that when the second movable valve disc 603 and the first movable valve disc 602 are in the seventh relative position, the water in the cold water flow channel 1 and the hot water flow channel 2 will not enter the water mixing flow channel 3, let alone reach the water use terminal 5. In another embodiment, when the second movable valve disc 603 and the first movable valve disc 602 are in a specific relative position, the third water mixing hole 6023 is blocked by the second movable valve disc 603, which can also prevent the water from entering the water mixing flow channel 3.

[0086] As can be seen from the above description, the user can not only cut off the water flow to the mixed water flow channel 3 by pivoting the first movable valve disc 602 to adjust the relative position of the first movable valve disc 602 and the fixed valve disc 601, but also cut off the water flow to the mixed water flow channel 3 by moving the second movable valve disc 603 or / and pivoting the first movable valve disc 602 to adjust the relative position of the second movable valve disc 603 and the fixed valve disc 601. Therefore, if the water flow is to be blocked on the upstream side of the mixed water flow channel 3 by the mixing valve 6, only one of the following two conditions needs to be met: the first movable valve disc 602 of the mixing valve 6 has the fifth relative position with the fixed valve disc 601, and the second movable valve disc 603 and the first movable valve disc 602 are in the seventh relative position.

[0087] Obviously, those skilled in the art are fully capable of selecting the specific structures and specific positions of the first cold water hole 6011, the first hot water hole 6012, the return water hole 6013 and the first mixing water hole 6014 on the fixed valve plate 601, the return water groove 6021, the second mixing water hole 6022 and the third mixing water hole 6023 on the first movable valve plate 602, and the mixing water groove 6031 on the second movable plate based on the above technical solution to achieve the above functions. Please refer to Figure 8 , Fig. 9 and Fig.10 Specifically in this embodiment, the following design is adopted:

[0088] The first orifice 6011a of the first cold water hole 6011 on the first surface 601a, the second orifice 6012a of the first hot water hole 6012 on the first surface 601a, the third orifice 6013a of the return water hole 6013 on the first surface 601a, the fourth orifice 6022a of the second mixed water hole 6022 on the second surface 602a, and the first notch 6021a of the return water groove 6021 on the second surface 602a are all arranged on the same cylindrical surface, that is, the cylindrical surface passes through the aforementioned orifices and notches. In addition, the axis of the aforementioned cylindrical surface coincides with the pivot axis c. In this way, when the first movable valve plate 602 is pivoted, the corresponding orifices or notches can be selectively connected or disconnected.

[0089] Furthermore, the first orifice 6011a, the second orifice 6012a, the third orifice 6013a, and the fourth orifice 6022a are all arc-shaped orifices surrounding the pivot axis c, and the first slot 6021a is an arc-shaped slot surrounding the pivot axis c, thereby making it easier to control the connection area of ​​the corresponding orifice or slot.

[0090] In this embodiment, the fifth orifice 6014a of the first water mixing hole 6014 on the aforementioned first surface 601a and the sixth orifice 6023a of the third water mixing hole 6023 on the aforementioned second surface 602a are both arranged on the pivot axis c. Therefore, when the first movable valve plate 602 pivots to any angle around the pivot axis c, the third water mixing hole 6023 always remains connected with the first water mixing hole 6014.

[0091] In this embodiment, the seventh opening 6023b of the third water mixing hole 6023 on the third surface 602b is also arranged on the pivot axis c. The water mixing tank 6031 includes a first tank body 6031a and a second tank body 6031b arranged in the first direction f1, and the first tank body 6031a includes a middle tank section 6031a1 in the first direction f1, and a left tank section 6031a2 and a right tank section 6031a3 located on opposite sides of the middle tank section 6031a1.

[0092] According to the above description, it can be known that only when the first movable valve plate 602 and the fixed valve plate 601 are in the above-mentioned second, third or fourth relative position, it is meaningful for the mixing groove 6031 of the second movable valve plate 603 to connect the second mixing hole 6022 and the third mixing hole 6023 (the second movable valve plate 603 and the first movable valve plate 602 are in the above-mentioned sixth relative position). Since the second movable valve disc 603 in this embodiment does not pivot with the first movable valve disc 602, when the first movable valve disc 602 and the fixed valve disc 601 are in the second, third, and fourth relative positions, there is a large angle change between the first movable valve disc 602 and the second movable valve disc 603. If the first movable valve disc 602 and the fixed valve disc 601 are in any one of the second, third, and fourth relative positions, the second water mixing hole 6022 and the third water mixing hole 6023 can be connected through the water mixing groove 6031 by moving the second movable valve disc 603 in the second direction f2, then the water mixing groove 6031 is generally required to have a larger size. In this embodiment, the water mixing groove 6031 is designed as the above structure, which increases the circumferential size of the water mixing groove 6031, especially the first groove body 6031a, thereby meeting the above requirements.

[0093] Further, the first orifice 6011a, the second orifice 6012a and the third orifice 6013a are arranged adjacent to each other (adjacent and spaced apart) in the direction around the pivot axis c. The first slot body 6031a is a circular arc slot body. The second water mixing hole 6022 has an eighth orifice 6022b on the third surface 602b, and the pivoting arc of the eighth orifice 6022b between the second relative position and the fourth relative position is less than or equal to the arc of the circular arc slot body.

[0094] A worm gear 607 with an outer gear ring structure is fixedly arranged on the periphery of the first movable valve disc 602, and the first motor 605 is connected to a worm 608 meshing with the worm gear 607 to drive the first movable valve disc 602 to pivot around the pivot axis c. When in use, the first motor 605 drives the worm 608 to pivot, the worm 608 drives the worm gear 607 meshing therewith to pivot, and the worm gear 607 drives the first movable valve disc 602 fixed therewith to pivot, so as to adjust the relative position of the first movable valve disc 602 and the fixed valve disc 601.

[0095] The water mixing valve 6 further comprises a valve housing 604, the valve housing 604 having a guide groove 6041 extending in the first direction f1, and the second movable valve disc 603 is movably embedded in the guide groove 6041. A wheel groove 6032 extending in the second direction f2 is formed on the fifth surface 603b of the second movable valve disc 603 away from the fourth surface 603a. The second motor 606 is connected to the eccentric wheel 609, and the eccentric wheel 609 is movably arranged in the wheel groove 6032 in a manner that it can move in the aforementioned second direction f2, wherein the second direction f2 is respectively perpendicular to the pivot axis c and the first direction f1. When in use, the second motor 606 drives the eccentric wheel 609 to rotate around the eccentric axis of the eccentric wheel 609. When the eccentric wheel 609 rotates eccentrically, its outer peripheral surface squeezes the groove wall of the wheel groove 6032, thereby driving the cover valve shell 604 to reciprocate along the guide groove 6041 in the first direction f1, thereby adjusting the relative position of the second movable valve plate 603 and the first movable valve plate 602.

[0096] In this embodiment, the water system further includes a housing 9, in which at least a portion of the cold water flow channel 1, the hot water flow channel 2, the mixed water flow channel 3 and the return water flow channel 4 are arranged, and the mixing water valve 6 is also installed on the housing 9. The cold water flow channel 1 and the hot water flow channel 2 both have an inlet joint with an external thread extending out of the housing 9 to facilitate connection with an external cold water pipe and a hot water tank. The mixed water flow channel 3 and the return water flow channel 4 both have an outlet joint extending out of the housing 9 to facilitate connection with an external return water pipe and a water terminal 5.

[0097] In addition, in order to realize automatic control of the water temperature, flow rate and whether to return water in the mixed water flow channel 3, the water system is also equipped with a water temperature sensor 7, as well as a first electric heater, a water supply switch, a temperature setting element and a controller not shown in the figure. Among them, the water temperature sensor 7 is connected to the hot water flow channel 2, and is used to obtain the current first water temperature of the hot water flow channel 2. The first electric heater is connected to the hot water flow channel 2, and is used to heat the hot water flow channel 2 to increase the water temperature of the hot water flow channel 2. The controller is respectively connected to the aforementioned first motor 605, the second motor 606, the water temperature sensor 7, the first electric heater, the water supply switch and the water temperature setting element, so as to receive relevant signals of the water supply switch, the water temperature setting element and the water temperature sensor 7, and control the working state of the first motor 605, the second motor 606 and the first electric heater.

[0098] In addition, this embodiment provides a water supply method for the water use system, and the water supply method includes:

[0099] S101, the water use system receives an opening operation acting on a water supply switch.

[0100] In this embodiment, the water supply switch is a rotatable knob, on which "ON" and "OFF" indicating the on and off states are printed, and the housing 9 around the knob is printed. In the initial state, the knob is in the "OFF" closed position. Now the user needs to drain water from the faucet as the water use terminal 5, and turns the knob to change it from the "OFF" position to the "ON" position.

[0101] In another embodiment, the water supply switch is also a knob switch, but the difference is that the knob switch is printed with "OFF" indicating the closed state, and "small", "medium" and "large" indicating the water flow rate. When the user rotates the knob switch to the angle position of "small", "medium" or "large", it means that the user wants to obtain a water flow of a corresponding flow rate from the water terminal 5 (or the mixed water flow channel 3). At this time, the water supply switch is not only in the open state, but also indicates the ideal water flow rate to be obtained. It can be seen that when the user rotates the knob switch to any of the aforementioned "small", "medium" or "large" positions, the water supply switch 9 is turned on.

[0102] In another embodiment, the water supply switch is also a knob switch, but the difference is that the knob switch is printed with "OFF" indicating the closed state, and "25℃" or "45℃" or "60℃" indicating the water temperature. When the user rotates the knob switch to the angle position of "25℃" or "45℃" or "60℃", it means that the user wants to obtain water of the corresponding temperature from the mixed water flow channel 3 to the water terminal 5. At this time, the water supply switch is not only in the open state, but also indicates the ideal water temperature to be obtained. The water supply switch and the water temperature setting element are the same component, and this application does not limit this. It can be seen that when the user rotates the knob switch to any of the aforementioned "25℃" or "45℃" or "60℃", the operation is to open the water supply switch.

[0103] S102 , in response to the above-mentioned opening operation, the water use system obtains the target water temperature of the mixed water flow channel 3 from the water temperature setting element, and obtains the current first water temperature of the hot water flow channel 2 from the water temperature sensor 7 .

[0104] In this embodiment, the water temperature setting element is another knob arranged side by side with the above-mentioned knob-type water supply switch. When the user rotates the knob-type water temperature setting element to different angles, it means that the user wants to obtain the corresponding ideal water temperature from the mixing water flow channel 3.

[0105] Normally, before turning on the water supply switch (before S101), the user will first operate the water temperature setting element to set the target water temperature of the mixed water channel 3, and then turn on the water supply switch. If the user does not operate the water temperature setting element to set the water temperature before turning on the water supply switch, the water use system can obtain the previously set water temperature from the water temperature setting element as the target water temperature. For example, before the user selects the water supply switch to the "ON" state, the user does not perform any rotation operation on the water temperature setting element 8, and the water temperature indicated by the water temperature setting element is "45°C". Then after the user selects the water supply switch to the "ON" state, the controller obtains the target water temperature of the mixed water channel 3 from the water temperature setting element as "45°C".

[0106] In another embodiment, the water supply switch and the water temperature setting element are integrated into the same touch screen.

[0107] In another embodiment, the water supply switch and the water temperature setting element are both equipped with a voice recognition module, and the opening or closing operation of the water supply switch and the operation of the water temperature setting element are voice-controlled operations, so that the water supply switch can be opened or closed and the target water temperature of the mixing water channel 3 can be set by voice commands.

[0108] S103, if the first water temperature is lower than the target water temperature, and the temperature difference between the target water temperature and the first water temperature is higher than the preset temperature difference threshold, the first movable valve plate 602 and the fixed valve plate 601 of the water mixing valve 6 are controlled to be in the above-mentioned first relative position, so that the cooling water in the hot water flow channel 2 is sent to the return water flow channel 4, so that the uncooled hot water upstream can quickly flow into the first hot water hole 6012.

[0109] If the first water temperature is less than the target water temperature, and the temperature difference between the target water temperature and the first water temperature is less than the above-mentioned temperature difference threshold, the first movable valve plate 602 and the fixed valve plate 601 of the water mixing valve 6 are controlled to be in the above-mentioned third relative position, the second movable valve plate 603 and the first movable valve plate 602 of the water mixing valve 6 are controlled to be in the above-mentioned sixth relative position, and the first electric heater is controlled to heat the hot water flow channel 2 so that the hot water flow channel 2 supplies water to the mixed water flow channel 3 at a corresponding flow rate. In this way, when the target water temperature is not much different from the first water temperature, the cooling water of the hot water flow channel 2 is heated and heated by the first electric heater to ensure that the water temperature of the mixed water flow channel 3 is the target water temperature.

[0110] If the first water temperature is greater than the target water temperature, and the second water temperature is less than the target water temperature, the first movable valve plate 602 and the fixed valve plate 601 of the water mixing valve 6 are controlled to be in the fourth relative position, the second movable valve plate 603 and the first movable valve plate 602 of the water mixing valve 6 are controlled to be in the sixth relative position, and the specific matching angle of the first movable valve plate 602 and the fixed valve plate 601 at the fourth relative position and the specific matching angle of the second movable valve plate 603 and the first movable valve plate 602 at the sixth relative position are determined according to the first water temperature, the second water temperature and the target water temperature; wherein the second water temperature is the current water temperature of the cold water flow channel 1. The purpose of this strategy is also to ensure that the water temperature of the water mixing flow channel 3 is the target water temperature.

[0111] If the first water temperature = the target water temperature, the first movable valve plate 602 and the fixed valve plate 601 of the water mixing valve 6 are controlled to be in the second relative position, and the second movable valve plate 603 and the first movable valve plate 602 of the water mixing valve 6 are controlled to be in the sixth relative position.

Claims

1. A water mixing valve with return water, water temperature regulation and flow regulation functions, characterized in that: include: A fixed valve plate, a first movable valve plate and a second movable valve plate, wherein: The first movable valve plate is abutted against the fixed valve plate in a manner that it can pivot about a pivot axis, and the second movable valve plate is abutted against the first movable valve plate in a manner that it can move in a first direction, wherein the pivot axis is perpendicular to the first direction; The fixed valve plate has a first surface abutting against the first movable valve plate, the first movable valve plate has a second surface abutting against the fixed valve plate and a third surface abutting against the second movable valve plate, and the second movable valve plate has a fourth surface abutting against the first movable valve plate; The fixed valve plate is provided with a first cold water hole, a first hot water hole, a first mixing water hole and a return water hole extending to the first surface, the first movable valve plate is provided with a second mixing water hole and a third mixing water hole extending from the second surface to the third surface, the first movable valve plate is provided with a return water groove recessed inward from the second surface, and the second movable valve plate is provided with a mixing water groove recessed inward from the fourth surface; The water mixing valve has a water return state, a connection state for users to use water, and a cut-off state for blocking water flow; when the first movable valve plate and the fixed valve plate are in a first relative position, the first hot water hole and the water return hole are both connected to the water return groove, the first cold water hole is blocked by the first movable valve plate, and the water mixing valve is in the water return state; When the first movable valve plate and the fixed valve plate are in a second relative position, the first cold water hole is connected to the second mixing water hole, the first hot water hole is blocked by the first movable valve plate, and the first mixing water hole is connected to the third mixing water hole; When the first movable valve plate and the fixed valve plate are in a third relative position, the first cold water hole is blocked by the first movable valve plate, the first hot water hole is connected to the second mixing water hole, and the first mixing water hole is connected to the third mixing water hole; When the first movable valve disc and the fixed valve disc are in a fourth relative position, the first cold water hole and the first hot water hole are both connected to the second mixing water hole, and the first mixing water hole is connected to the third mixing water hole; and at the fourth relative position, a ratio of a connecting area between the first cold water hole and the second mixing water hole and a connecting area between the first hot water hole and the second mixing water hole changes in response to the first movable valve disc pivoting around the pivot axis; When the second movable valve plate is in a sixth relative position with respect to the first movable valve plate, the second water mixing hole and the third water mixing hole are both connected to the water mixing groove; and at the sixth relative position, the connection area between the second water mixing hole and the water mixing groove changes in response to the second movable valve plate moving in the first direction; When the first movable valve disc and the fixed valve disc are in the second relative position, the third relative position, or the fourth relative position, and the second movable valve disc and the first movable valve disc are in the sixth relative position, the water mixing valve is in a connected state.

2. The water mixing valve according to claim 1, characterized in that: When the first movable valve plate and the fixed valve plate are in a fifth relative position, the first cold water hole and the first hot water hole are both connected to the water return groove.

3. The water mixing valve according to claim 1, characterized in that: When the second movable valve disc is in the seventh relative position with the first movable valve disc, the second water mixing hole and / or the third water mixing hole are blocked by the second movable valve disc.

4. The water mixing valve according to any one of claims 1 to 3, characterized in that: The first orifice of the first cold water hole on the first surface, the second orifice of the first hot water hole on the first surface, the third orifice of the return water hole on the first surface, the fourth orifice of the second mixing water hole on the second surface, and the first notch of the return water groove on the second surface are all arranged on the same cylindrical surface, and the axis of the cylindrical surface coincides with the pivot axis.

5. The water mixing valve according to claim 4, characterized in that: The fifth opening of the first water mixing hole on the first surface and the sixth opening of the third water mixing hole on the second surface are both arranged on the pivot axis.

6. The water mixing valve according to claim 5, characterized in that: The third water mixing hole is arranged at the seventh orifice of the third surface on the pivot axis, and the water mixing trough includes a first trough body and a second trough body arranged along the first direction, and the first trough body includes a middle trough section in the first direction, and a left trough section and a right trough section located on opposite sides of the middle trough section.

7. The water mixing valve according to claim 6, characterized in that: The first orifice, the second orifice and the third orifice are arranged adjacent to each other in sequence in a direction surrounding the pivot axis, the first trough body is an arc-shaped trough body, the second water mixing hole has an eighth orifice on the third surface, and the pivot arc of the eighth orifice between the second relative position and the fourth relative position is ≤ the arc of the arc-shaped trough body.

8. The water mixing valve according to claim 4, characterized in that: A worm gear with an outer gear ring structure is fixedly sleeved on the periphery of the first movable valve plate, and the first motor is connected to a worm meshed with the worm gear to drive the first movable valve plate to pivot around the pivot axis; It also includes a valve housing, which has a guide groove extending along the first direction, the second movable valve plate is movably embedded in the guide groove, and a wheel groove extending in the second direction is formed on the fifth surface of the second movable valve plate facing away from the fourth surface, and the second motor is connected to the eccentric wheel, and the eccentric wheel is movably arranged in the wheel groove in a manner that it can move in the second direction, wherein the second direction is respectively perpendicular to the pivot axis and the first direction.

9. A water system, comprising: case, A cold water flow channel, a hot water flow channel, a mixed water flow channel and a return water flow channel are arranged in the shell, and A water mixing valve according to any one of claims 1 to 8 disposed in the housing; Wherein, the cold water flow channel, the hot water flow channel, the mixed water flow channel and the return water flow channel are respectively connected to the first cold water hole, the first hot water hole, the first mixed water hole and the return water hole.

10. The water use system according to claim 9, characterized in that: The cold water flow channel and the hot water flow channel both have a water inlet joint extending out of the shell, and the mixed water flow channel and the return water flow channel both have a water outlet joint extending out of the shell.

Images