CN113551066A - Water mixing valve and water path system with water return and water temperature adjusting functions - Google Patents

Abstract

The application relates to a water mixing valve and a water path system with functions of water return and water temperature regulation, wherein the water mixing valve comprises a first fixed valve plate and a first movable valve plate, and the first movable valve plate is attached to the first fixed valve plate in a manner of pivoting around a first pivot axis; first stator piece has and pastes and leans on the first surface of first movable valve piece, first movable valve piece has and pastes and leans on the second surface of first stator piece, it extends to link up the setting on the first stator piece first cold water hole, first hot water hole, first hole and the first hole of mixing water of first surface, set up on the first movable valve piece and follow the inside sunken first basin and the first basin of mixing water of second surface, first basin with first hole intercommunication of mixing water.

Description

Water mixing valve and water path system with water return and water temperature adjusting functions

Technical Field

The application relates to a water mixing valve and a water path system with water return and water temperature adjusting functions.

Background

The water mixing valve is a valve for adjusting the flow ratio of cold water to hot water and further adjusting the temperature of cold and hot mixed water, and a traditional water mixing valve has a space for further improvement in structural optimization and function improvement, for example, the traditional water mixing valve does not have a water return function.

Disclosure of Invention

The technical problem that this application was solved is: a water mixing valve and a water path system with the functions of water return and water temperature regulation are provided.

The technical scheme of the application is as follows:

in a first aspect, a water mixing valve with water returning and water temperature adjusting functions is provided, and comprises a first fixed valve plate and a first movable valve plate, wherein the first movable valve plate is attached to the first fixed valve plate in a manner of pivoting around a first pivot axis;

the first fixed valve plate is provided with a first surface attached to the first movable valve plate, the first movable valve plate is provided with a second surface attached to the first fixed valve plate, a first cold water hole, a first hot water hole, a first water mixing hole and a first water returning hole which extend to the first surface are arranged on the first fixed valve plate in a penetrating mode, a first water mixing groove and a first water returning groove which are sunken inwards from the second surface are arranged on the first movable valve plate, and the first water mixing groove is communicated with the first water mixing hole;

when the first movable valve plate and the first fixed valve plate are located at a first relative position, the first hot water hole and the first water return hole are both communicated with the first water return groove, and the first cold water hole is blocked by the first movable valve plate;

when the first movable valve plate and the first fixed valve plate are located at a second relative position, the first cold water hole is communicated with the first water mixing tank, and the hot water hole is blocked by the first movable valve plate;

when the first movable valve plate and the first fixed valve plate are located at a third relative position, the first hot water hole is communicated with the first water mixing tank, and the cold water hole is blocked by the first movable valve plate;

when the first movable valve plate and the first fixed valve plate are located at a fourth relative position, the first cold water hole and the first hot water hole are both communicated with the first water mixing groove; and in the fourth relative position, the ratio of the communication area of the first cold water hole and the first water mixing tank to the communication area of the first hot water hole and the first water mixing tank changes in response to the first movable valve plate pivoting about the first pivot axis.

In an optional design, when the first movable valve plate and the first fixed valve plate are located at a fifth relative position, the first cold water hole and the first hot water hole are blocked by the first movable valve plate.

In an alternative design, the fourth orifice of the first water mixing hole at the first surface and the first notch of the first water mixing groove at the second surface are both arranged on the first pivot axis.

In an alternative 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 first water return hole on the first surface, the first notch of the first water mixing tank on the second surface, and the second notch of the first water return tank on the second surface are all arranged on the same cylindrical surface, and the axial line of the cylindrical surface coincides with the first pivot axis.

In an optional design, the first water mixing tank is composed of a first tank body arranged on the first pivot axis and a second tank body arranged on the cylindrical surface, the first cold water hole, the first hot water hole and the first water return hole are all arc-shaped holes, and the first tank body and the water return tank are all arc-shaped grooves.

In an optional design, the valve further comprises a first worm wheel fixed with the first movable valve plate, and a first motor is connected with a first worm meshed with the first worm.

In a second aspect, a waterway system is provided, including:

the number of the plates is such that,

a cold water flow passage, a hot water flow passage, a mixed water flow passage and a return water flow passage which are arranged in the plate, and

the mixing valve according to the first aspect;

the cold water flow channel, the hot water flow channel, the mixed water flow channel and the return water flow channel are respectively communicated with the first cold water hole, the first hot water hole, the first water mixing hole and the first return water hole.

In an alternative design, the plate has third and fourth oppositely disposed surfaces and a fifth surface connecting the third and fourth surfaces, the cold water flow passage has a first flow passage opening at the third surface and a second flow passage opening at the fifth surface, the hot water flow passage has a third flow passage opening at the third surface and a fourth flow passage opening at the fifth surface, the water return flow passage has a fifth flow passage opening at the fifth surface and a sixth flow passage opening at the third surface, and the water mixing flow passage has a seventh flow passage opening at the fifth surface and an eighth flow passage opening at the fourth surface;

the second flow channel opening, the fourth flow channel opening, the fifth flow channel opening and the seventh flow channel opening are arranged in a first caulking groove arranged on the fifth surface in an abutting mode, the first fixing valve plate is fixedly embedded in the first caulking groove, and the first cold water hole, the first hot water hole, the first water return hole and the first water mixing hole are communicated with the second flow channel opening, the fourth flow channel opening, the fifth flow channel opening and the seventh flow channel opening in a one-to-one correspondence mode.

In an alternative design, the mixing flow channel includes a first flow channel section and a second flow channel section, the first flow channel section has the seventh flow channel opening and a ninth flow channel opening on the fifth surface, the second flow channel section has the eighth flow channel opening and a tenth flow channel opening on the fifth surface, and the ninth flow channel opening and the tenth flow channel opening are adjacently arranged in a second caulking groove arranged on the fifth surface;

the flow regulating valve comprises a second fixed valve plate and a second movable valve plate, the second fixed valve plate is fixedly embedded in the second embedded groove, and the second movable valve plate can be attached to the second fixed valve plate in a pivoting mode around a second pivot axis;

a second water mixing hole communicated with the ninth flow passage opening and a third water mixing hole communicated with the tenth flow passage opening are arranged on the second fixed valve plate in a penetrating manner, and the second movable valve plate is provided with a sixth surface attached to the second fixed valve plate and a second water mixing groove inwards sunken from the sixth surface;

when the second movable valve plate and the second fixed valve plate are located at a sixth relative position, the second water mixing hole and the third water mixing hole are both communicated with the second water mixing groove; and in the sixth relative position, the communication area of the second water mixing hole or the third water mixing hole with the second water mixing groove changes in response to the second movable valve plate pivoting about the second pivot axis.

The application has at least the following beneficial effects:

this kind of muddy water valve of this application not only has the temperature regulatory function, still has the return water function, can be when the hot water runner is not enough because of the cold water that dispels the heat, draw out the cooling water that loses the temperature in the hot water runner fast, make the hot water that the upper reaches did not lose the temperature supply to the hot water runner especially the play water end of hot water runner fast, promote the temperature of hot water runner fast in the short time, help being close the required ideal temperature of user at the follow-up leaving water temperature at water use terminal.

Drawings

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, and it is apparent that the drawings in the following description only relate to some embodiments of the present application and are not limiting on the present application.

Fig. 1 is an external view of a waterway system according to a first embodiment of the present application.

Fig. 2 is a schematic cross-sectional view of fig. 1.

Fig. 3 is an eleventh perspective cross-sectional view of the plate of fig. 1.

Fig. 4 is a partial schematic view of fig. 1.

Fig. 5 is a partially exploded view of fig. 1.

Fig. 6 is a partially exploded view of fig. 1.

Fig. 7 is a perspective view of the plate of fig. 1.

Fig. 8 is a partially exploded view of a mixing valve according to one embodiment of the present disclosure.

Fig. 9 is a schematic view of fig. 8 as viewed from the rear.

Fig. 10 is a schematic view with the addition of the first pivot axis and cylindrical surface in fig. 9.

Fig. 11 is a schematic view of a first movable valve plate and a first fixed valve plate of a mixing valve according to an embodiment of the present application when the first movable valve plate and the first fixed valve plate are at a first relative position.

Fig. 12 is a schematic view of the first movable valve plate and the first fixed valve plate of the mixing valve in the first embodiment of the present application when they are at the second relative position.

Fig. 13 is a schematic view of the first movable valve plate and the first fixed valve plate of the mixing valve in the first embodiment of the present application when they are at the third relative position.

Fig. 14 is a schematic view of the first moving valve plate and the first fixed valve plate of the mixing valve in the first embodiment of the present application when they are located at the fourth relative position.

Fig. 15 is a schematic view of the first movable valve plate and the first fixed valve plate of the mixing valve in the first embodiment of the present application when they are located at the fourth relative position.

Fig. 16 is a schematic view of the first moving valve plate and the first fixed valve plate of the mixing valve in the first embodiment of the present application when they are located at the fourth relative position. In fig. 14, 15, and 16, the communication area between the first hot water hole and the first water mixing groove is increased in order.

Fig. 17 is a schematic view of the first movable valve plate and the first fixed valve plate of the first mixing valve in a fifth relative position according to the first embodiment of the present application.

FIG. 18 is a partially exploded view of a water return valve according to an embodiment of the present application.

Fig. 19 is a schematic view with the addition of a second pivot axis and cylindrical surface in fig. 18.

FIG. 20 is a schematic view illustrating the first movable valve plate and the first fixed valve plate of the water return valve in a sixth relative position according to the first embodiment of the present application.

FIG. 21 is a schematic view illustrating the first movable valve plate and the first fixed valve plate of the water return valve in a sixth relative position according to the first embodiment of the present application.

FIG. 22 is a schematic view illustrating the first movable valve plate and the first fixed valve plate of the water return valve in a sixth relative position according to the first embodiment of the present application. In fig. 20, 21, and 22, the opening degree of the return valve is increased in order.

Description of reference numerals:

c 1-first pivot axis, c 2-second pivot axis, p-cylindrical surface;

1-a cold water flow channel, 2-a hot water flow channel, 3-a water mixing flow channel, 4-a water returning flow channel, 5-a water mixing valve, 6-a water using terminal, 7-a flow regulating valve, 8-a water temperature sensor, 9-a plate and 10-an outer cover;

103-cold water joint, 203-hot water joint, 403-backwater joint;

501-a first fixed valve plate, 502-a first movable valve plate, 503-a first motor, 504-a first worm wheel, 505-a first worm, 506-a first valve shell;

501 a-a first surface, 502 a-a second surface;

5011-first cold water hole, 5012-first hot water hole, 5013-first return water hole, 5014-first mixed water hole;

5021, a first water mixing tank, 5022, a first water return tank;

5011 a-first orifice, 5012 a-second orifice, 5013 a-third orifice, 5014 a-fourth orifice, 5021 a-first notch, 5022 a-second notch;

50211-a first groove body, 50212-a second groove body;

701-a second fixed valve plate, 702-a second movable valve plate, 703-a second motor, 704-a second worm wheel, 705-a second worm and 706-a second valve shell;

7011-second water mixing hole, 7012-third water mixing hole, 7021-second water mixing groove;

9 a-a third surface, 9 b-a fourth surface, 9 c-a fifth surface;

101-a first runner port, 102-a second runner port, 201-a third runner port, 202-a fourth runner port, 401-a fifth runner port, 402-a sixth runner port, 301-a seventh runner port, 302-an eighth runner port, 303-a ninth runner port, 304-a tenth runner port;

3 a-first flow path segment, 3 b-second flow path segment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings of the embodiments of the present application. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the application without any inventive step, are within the scope of protection of the application. It will be understood that some of the technical means of the various embodiments described herein may be replaced or combined with each other without conflict.

In the description of the present application and claims, the terms "first," "second," and the like, if any, are used solely to distinguish one from another as between described objects and not necessarily in any sequential or technical sense. Thus, an object defined as "first," "second," etc. may explicitly or implicitly include one or more of the object. Also, the use of the terms "a" or "an" and the like, do not denote a limitation of quantity, but rather denote the presence of at least one of the two, and "a plurality" denotes no less than two. As used herein, the term "plurality" means not less than two.

In the description of the present application and in the claims, the terms "connected," "mounted," "secured," and the like are used broadly, unless otherwise indicated. For example, "connected" may be a separate connection or may be integrally connected; can be directly connected or indirectly connected through an intermediate medium; may be non-detachably connected or may be detachably connected. The specific meaning of the foregoing terms in the present application can be understood by those skilled in the art as appropriate.

In the description of the present application and in the claims, if there is an orientation or positional relationship indicated by the terms "upper", "lower", "horizontal", etc. based on the orientation or positional relationship shown in the drawings, it is only for the convenience of clearly and simply describing the present application, and it is not indicated or implied that the elements referred to must have a specific direction, be constructed and operated in a specific orientation, and these directional terms are relative concepts for the sake of description and clarification and may be changed accordingly according to the change of orientation in which the elements in the drawings are placed. For example, if the device in the figures is turned over, elements described as "below" other elements would then be oriented "above" the other elements.

In the description of the present application and in the claims, the presence of the terms "in sequence" and "sequentially", for example the phrase "A, B, C arranged in sequence", merely indicates the order of arrangement of the elements A, B, C and does not exclude the possibility of arranging other elements between a and B and/or between B and C.

In the description of the specification and claims, the terms "based on" and "based on," if any, are used to describe one or more factors that affect the determination. The term does not exclude additional factors that influence the determination. That is, the determination may be based solely on these factors or at least partially on these factors. For example, the phrase "determining E based on D," in which case D is a factor that affects the determination of E, does not exclude that the determination of E may also be based on F.

In the description of the present specification and claims, the term "if present may generally be interchangeable with" when … "or" when … "or" in response to a determination ", depending on the context.

In the description of the specification and claims of this application, the term "configured to" if present is generally interchangeable with "… capable", "designed to", "for", or "capable", depending on the context.

Embodiments of the present application will now be described with reference to the accompanying drawings.

< example one >

Fig. 1 to 22 show a first embodiment of the water system of the present application, which includes a cold water flow passage 1, a hot water flow passage 2, a mixed water flow passage 3, a return water flow passage 4, and a water use terminal 6. The water usage terminal 6 is a faucet having a water outlet in communication with the mixed water flow passage 3. The water outlet end of the cold water flow channel 11 and the water outlet end of the hot water flow channel 22 are connected to the water inlet end of the mixed water flow channel 3 through the same mixing valve 5, i.e., the mixing valve 5 is connected between the cold water flow channel 1 and the mixed water flow channel 3, and is also connected between the hot water flow channel 22 and the mixed water flow channel 33. The water inlet end of the return water flow passage 4 is also connected to the hot water flow passage 2 through the water mixing valve 5.

In this embodiment, the mixing valve 5 is used to adjust the ratio of the communication area between the cold water flow channel 1 and the mixing flow channel 3 to the communication area between the hot water flow channel 2 and the mixing flow channel 3, so as to adjust the ratio of the cold water and the hot water entering the mixing flow channel 3, so as to obtain an ideal water temperature in the mixing flow channel 3 and deliver the ideal water temperature to the water terminal 6, thereby meeting the requirement of the user on the water temperature. The mixing valve 5 is also used for selectively connecting or disconnecting the return water flow passage 4 and the hot water flow passage 2. As described in detail below.

In this embodiment, the water usage terminal 6 is a water tap communicating with the water outlet end of the mixing flow channel 3, and has a water outlet. When the water tap is used, water flowing into the mixed water flow passage 3 from the cold water flow passage 1 and/or the hot water flow passage 2 is sent to the water tap for users to use. In other embodiments, the water terminals 6 are shower heads for bathing. It will be appreciated that a portion of the mixing flow path 3 is formed inside the faucet as the water usage terminal 6.

Referring to fig. 8 to 10, the mixing valve 5 includes a first fixed valve plate 501 and a first movable valve plate 502, wherein the first movable valve plate 502 is abutted against the first fixed valve plate 501 in a manner of being able to pivot about a first pivot axis c1, that is, the first movable valve plate 502 is arranged in abutment with the first fixed valve plate 501, and the first movable valve plate 502 is able to pivot about a first pivot axis c1 relative to the first fixed valve plate 501. The first fixed valve plate 501 has a first surface 501a abutting against the first movable valve plate 502, and the first movable valve plate 502 has a second surface 502a abutting against the first fixed valve plate 501. The first fixed valve plate 501 is provided with a first cold water hole 5011, a first hot water hole 5012, a first water mixing hole 5014 and a first water return hole 5013 which extend to the first surface 501a in a penetrating manner, the first movable valve plate 502 is provided with a first water mixing groove 5021 and a first water return groove 5022 which are recessed inwards from the second surface 502a, and the first water mixing groove 5021 is communicated with the first water mixing hole 5014.

The cold water runner 1, the hot water runner 2, the mixed water runner 3 and the return water runner 4 are respectively and correspondingly communicated with the first cold water hole 5011, the first hot water hole 5012, the first mixed water hole 5014 and the first return water hole 5013.

As shown in fig. 11 and referring to fig. 8 to 10, when the first movable valve plate 502 and the first fixed valve plate 501 are located at the first relative position, the first hot water hole 5012 and the first water return hole 5013 are both communicated with the first water return groove 5022, and the first cold water hole 5011 is blocked by the first movable valve plate 502. In this state, the water in the cold water flow passage 1 is blocked on the second surface 502a of the first movable valve plate 502, the first return water groove 5022 connects the first hot water hole 5012 and the first return water hole 5013, and the water (e.g., hot water cooling water) delivered from the hot water flow passage 2 to the first hot water hole 5012 flows to the first return water hole 5013 through the first return water groove 5022 and is led out from the first return water hole 5013.

As shown in fig. 12 and referring to fig. 8 to fig. 10, when the first movable valve plate 502 and the first fixed valve plate 501 are located at the second relative position, the first cold water hole 5011 is communicated with the first water mixing groove 5021, and the hot water hole is blocked by the first movable valve plate 502. In this state, the water in the cold water flow channel 1 can flow into the first water mixing groove 5021, and then flow into the first water mixing hole 5014 communicated with the first water mixing groove 5021, and then flow from the first water mixing hole 5014 to the water mixing flow channel 3, and the water in the hot water flow channel 2 is blocked on the second surface 502a of the first movable valve plate 502.

As shown in fig. 13 and with reference to fig. 8 to 10, when the first movable valve plate 502 and the first fixed valve plate 501 are located at the third relative position, the first hot water hole 5012 is communicated with the first water mixing groove 5021, and the cold water hole is blocked by the first movable valve plate 502. In this state, the water in the hot water flow channel 2 can flow into the first water mixing groove 5021, and then flow into the first water mixing hole 5014 communicated with the first water mixing groove 5021, and then flow from the first water mixing hole 5014 to the water mixing flow channel 3, and the water in the cold water flow channel 1 is blocked on the second surface 502a of the first movable valve plate 502.

As shown in fig. 14-16 and with reference to fig. 8-10, when the first movable valve plate 502 and the first fixed valve plate 501 are at the fourth relative position, both the first cold water hole 5011 and the first hot water hole 5012 are communicated with the first water mixing groove 5021. And in the fourth relative position (i.e., on the premise of ensuring that the first cold water hole 5011 and the first hot water hole 5012 are both communicated with the first water mixing tank 5021), the ratio of the communication area between the first cold water hole 5011 and the first water mixing tank 5021 to the communication area between the first hot water hole 5012 and the first water mixing tank 5021 can be adjusted by pivoting the first movable valve plate 502 around the first pivot axis c1 (at a small angle). That is, in the fourth relative position, the ratio of the communication area of the first cold water hole 5011 and the first water mixing groove 5021 to the communication area of the first hot water hole 5012 and the second water mixing groove 7021 is changed in response to the first movable valve plate 502 pivoting about the first pivot axis c1, thereby adjusting the water temperature of the water mixing flow passage 3.

As shown in fig. 17 and referring to fig. 8 to 10, when the first movable valve plate 502 and the first fixed valve plate 501 are at the fifth relative position, both the first cold water hole 5011 and the first hot water hole 5012 are blocked by the first movable valve plate 502. In this state, the water in the cold water channel 1 and the water in the hot water channel 2 are blocked by the first movable valve plate 502.

Obviously, on the basis of the above technical solutions, those skilled in the art are fully capable of selecting specific structures and specific positions of the first cold water hole 5011, the first hot water hole 5012, the first water return hole 5013, and the first water mixing hole 5014 on the first fixed valve plate 501, and the first water mixing groove 5021 and the first water return groove 5022 on the first movable valve plate 502, so as to achieve the above functions. Referring to fig. 8 to 10 again, in the present embodiment, the following design is adopted:

the fourth opening 5014a of the first mixing hole 5014 on the first surface and the first notch 5021a of the first mixing groove 5021 on the second surface are both disposed on the first pivot axis c 1. Thus, when the first movable valve plate 502 pivots to any angle about the first pivot axis c1, the first water mixing groove 5021 is always communicated with the first water mixing hole 5014.

The first orifice 5011a of the first cold water hole 5011 on the first surface 501a, the second orifice 5012a of the first hot water hole 5012 on the first surface 501a, the third orifice 5013a of the first water return hole 5013 on the first surface 501a, the first notch 5021a of the first water mixing groove 5021 on the second surface 502a, and the second notch 5022a of the first water return groove 5022 on the second surface 502a are all disposed on the same cylindrical surface p. I.e. the cylindrical surface p passes through the various apertures and slots described above. The axis of the cylindrical surface p coincides with the first pivot axis c 1. This allows the respective apertures and slots to be selectively communicated or blocked when pivoting the first movable valve plate 502.

The first water mixing groove 5021 consists of a first groove 50211 and a second groove 50212. Wherein the first groove 50211 is arranged on the first pivot axis c1 and the second is arranged on the aforementioned cylindrical surface p.

First cold water hole 5011, first hot water hole 5012, first return water hole 5013 are the arc hole, and first cell body 50211 and return water groove are the arc wall, so the control of being more convenient for corresponds the switch-on area of drill way and notch.

The pivoting of the first movable valve plate 502 is driven by a first motor 503. Specifically, an output shaft of the first motor 503 is connected to a first worm 505, and a first worm wheel 504 engaged with the first worm 505 is fixed on the first movable valve plate 502. The mixing valve 5 includes a first valve housing 506 fixed to the plate 9 described below, and the first motor 503 is fixed to the first valve housing 506 of the mixing valve 5.

Referring to fig. 2-7, in the present embodiment, the waterway system includes a substantially rectangular plate 9, and the plate 9 is of an integral injection molding structure. The cold water flow passage 1, the hot water flow passage 2, the mixed water flow passage 3, and the return water flow passage 4 are formed in the plate 9.

The plate 9 has third and fourth surfaces 9a and 9b arranged oppositely, and a fifth surface 9c connecting the third and fourth surfaces 9a and 9 b. The cold water flow passage 1 has a first flow opening 101 at the third surface 9a and a second flow opening 102 at the fifth surface 9 c. The hot water flow passage 2 has a third flow passage opening 201 at the third surface 9a and a fourth flow passage opening 202 at the fifth surface 9 c. The return water flow passage 4 has a fifth flow passage opening 401 at the fifth surface 9c and a sixth flow passage opening 402 at the third surface 9 a. The mixing flow channel 3 has a seventh flow channel opening 301 at the fifth surface 9c and an eighth flow channel opening 302 at the fourth surface 9 b.

The fifth surface 9c of the plate 9 is formed with a first caulking groove and a second caulking groove which are recessed inward, and the above-mentioned second flow port 102, fourth flow port 202, fifth flow port 401, and seventh flow port 301 are arranged adjacently in the first caulking groove. The first fixed valve plate 501 of the water mixing valve 5 is fixedly embedded in the first embedded groove, and the first cold water hole 5011, the first hot water hole 5012, the first water return hole 5013 and the first water mixing hole 5014 on the first embedded groove are respectively communicated with the second runner port 102, the fourth runner port 202, the fifth runner port 401 and the seventh runner port 301 in a one-to-one correspondence manner.

The mixed water flow channel 3 includes a first flow channel section 3a and a second flow channel section 3b, the first flow channel section 3a has two flow channel openings located on the fifth surface 9c, namely a ninth flow channel opening 303 and the seventh flow channel opening 301, that is, the seventh flow channel opening 301 of the mixed water flow channel 3 is specifically disposed on the first flow channel section 3 a. The second flow passage section 3b also has two flow passage openings, which are a tenth flow passage opening 304 and the tenth flow passage opening 304, that is, the tenth flow passage opening 304 of the mixing flow passage 3 is specifically disposed in the second flow passage section 3 b. The ninth and tenth port openings 303 and 304 are arranged adjacent to each other in the second caulking groove.

The purpose of the above-described structure of the mixed water flow path 3 is to install a flow rate control valve 7 so as to control the flow rate of the mixed water flow path 3 by the flow rate control valve 7. Specifically, the flow regulating valve 7 includes a second fixed valve plate 701 and a second movable valve plate 702, wherein the second fixed valve plate 701 is fixedly embedded in the second embedding groove, and the second movable valve plate 702 abuts against the second fixed valve plate 701 in a manner of being capable of pivoting around a second pivot axis c 2. The second fixed valve plate 701 is provided with a first water mixing hole 5014 communicated with the ninth flow passage 303 and a second water mixing hole 7011 communicated with the tenth flow passage 304. The second movable valve plate 702 has a sixth surface abutting against the second fixed valve plate 701, and a second water mixing groove 7021 recessed inward from the sixth surface.

As shown in fig. 20 to 22 with reference to fig. 18 and 19, when the second movable valve plate 702 and the second fixed valve plate 701 are located at the sixth relative position, both the second water mixing hole 7011 and the third water mixing hole 7012 are communicated with the second water mixing groove 7021. And in the sixth relative position (i.e., in a position where the second water mixing hole 7011 and the third water mixing hole 7012 are both ensured to be communicated with the second water mixing groove 7021), the communication area between the second water mixing hole 7011 and the second water mixing groove 7021 and the communication area between the third water mixing hole 7012 and the second water mixing groove 7021 can be adjusted by pivoting the second movable valve plate 702 about the second pivot axis c2 (at a small angle). That is, in the sixth relative position, the communication area between the second mixing hole 7011 and the second water mixing groove 7021 and the communication area between the third mixing hole 7012 and the second water mixing groove 7021 are changed in response to the second movable valve plate 702 pivoting about the second pivot axis c2, so as to adjust the flow rate of the mixing flow passage 3. It is understood that in the sixth relative position, the flow rate of the mixing flow passage 3 can be adjusted as long as the communication area between one of the second mixing hole 7011 and the third mixing hole 7012 and the second mixing groove 7021 can be changed in response to the second movable valve plate 702 pivoting about the second pivot axis c 2.

The pivoting of the second movable valve plate 702 is driven by a second motor 703. Specifically, an output shaft of the second motor 703 is connected to a second worm 705, and a second worm wheel 704 engaged with the second worm 705 is fixed on the second movable valve plate 702. The flow control valve 7 includes a second valve housing 706 fixed to the plate 9, and the second motor 703 is fixedly attached to the second valve housing 706 of the flow control valve 7.

The water path system is further provided with a water temperature sensor 8 thermally connected to the hot water flow path 2, and a controller not shown in the figure, which is in communication with the water temperature sensor 8, the first motor 503, and the second motor 707. The water temperature sensor 8 is used to acquire the current water temperature of the hot water flow passage 2. In practical application, when a user opens a faucet to prepare water, if the current water temperature of the hot water flow channel 2 detected by the water temperature sensor 8 is obviously lower than an ideal water temperature desired by the user, the controller generates a control instruction to the first motor 503 to enable the first motor 503 to drive the first movable valve plate 501 to pivot, and further control the first movable valve plate and the first fixed valve plate to be in the first relative position so as to communicate the hot water flow channel 1 and the return water flow channel 4, so that cooling water lost in the hot water flow channel 2 is quickly led out through the return water flow channel 4, hot water without losing temperature at the upstream is quickly supplemented to the hot water flow channel 2, particularly the water outlet end of the hot water flow channel 2, the water temperature of the hot water flow channel 2 is quickly increased in a short time, and subsequent outlet water temperature of the water using terminal 6 is facilitated to be close to the ideal temperature of the user.

Claims (9)

1. A water mixing valve with water return and water temperature adjusting functions is characterized by comprising a first fixed valve plate and a first movable valve plate, wherein the first movable valve plate is attached to the first fixed valve plate in a manner of pivoting around a first pivot axis;

the first fixed valve plate is provided with a first surface attached to the first movable valve plate, the first movable valve plate is provided with a second surface attached to the first fixed valve plate, a first cold water hole, a first hot water hole, a first water mixing hole and a first water returning hole which extend to the first surface are arranged on the first fixed valve plate in a penetrating mode, a first water mixing groove and a first water returning groove which are sunken inwards from the second surface are arranged on the first movable valve plate, and the first water mixing groove is communicated with the first water mixing hole;

when the first movable valve plate and the first fixed valve plate are located at a first relative position, the first hot water hole and the first water return hole are both communicated with the first water return groove, and the first cold water hole is blocked by the first movable valve plate;

when the first movable valve plate and the first fixed valve plate are located at a second relative position, the first cold water hole is communicated with the first water mixing tank, and the hot water hole is blocked by the first movable valve plate;

when the first movable valve plate and the first fixed valve plate are located at a third relative position, the first hot water hole is communicated with the first water mixing tank, and the cold water hole is blocked by the first movable valve plate;

when the first movable valve plate and the first fixed valve plate are located at a fourth relative position, the first cold water hole and the first hot water hole are both communicated with the first water mixing groove; and in the fourth relative position, the ratio of the communication area of the first cold water hole and the first water mixing tank to the communication area of the first hot water hole and the first water mixing tank changes in response to the first movable valve plate pivoting about the first pivot axis.

2. The mixing valve of claim 1, wherein when the first movable valve plate and the first fixed valve plate are in a fifth relative position, both the first cold water hole and the first hot water hole are blocked by the first movable valve plate.

3. The mixing valve of claim 1, wherein the fourth orifice of the first mixing hole at the first surface and the first notch of the first mixing channel at the second surface are both arranged on the first pivot axis.

4. The mixing valve of claim 3, wherein the first orifice of the first cold water hole at the first surface, the second orifice of the first hot water hole at the first surface, the third orifice of the first return water hole at the first surface, the first notch, and the second notch of the first return water groove at the second surface are all arranged on a same cylindrical surface, and an axial line of the cylindrical surface coincides with the first pivot axis.

5. The mixing valve as claimed in claim 4, wherein the first water mixing tank is composed of a first tank body arranged on the first pivot axis and a second tank body arranged on the cylindrical surface, the first cold water hole, the first hot water hole and the first water return hole are all arc-shaped holes, and the first tank body and the water return tank are all arc-shaped tanks.

6. The mixing valve of claim 2, further comprising a first worm wheel fixed to the first movable valve plate, and a first motor connected to a first worm engaged with the first worm.

7. A waterway system, comprising:

the number of the plates is such that,

a cold water flow passage, a hot water flow passage, a mixed water flow passage and a return water flow passage which are arranged in the plate, and

the mixing valve as claimed in any one of claims 1 to 6;

the cold water flow channel, the hot water flow channel, the mixed water flow channel and the return water flow channel are respectively communicated with the first cold water hole, the first hot water hole, the first water mixing hole and the first return water hole.

8. The waterway system of claim 7, wherein the plate has third and fourth oppositely disposed surfaces and a fifth surface connecting the third and fourth surfaces, the cold water passageway has a first passageway opening at the third surface and a second passageway opening at the fifth surface, the hot water passageway has a third passageway opening at the third surface and a fourth passageway opening at the fifth surface, the return water passageway has a fifth passageway opening at the fifth surface and a sixth passageway opening at the third surface, and the mixing passageway has a seventh passageway opening at the fifth surface and an eighth passageway opening at the fourth surface;

the second flow channel opening, the fourth flow channel opening, the fifth flow channel opening and the seventh flow channel opening are arranged in a first caulking groove arranged on the fifth surface in an abutting mode, the first fixing valve plate is fixedly embedded in the first caulking groove, and the first cold water hole, the first hot water hole, the first water return hole and the first water mixing hole are communicated with the second flow channel opening, the fourth flow channel opening, the fifth flow channel opening and the seventh flow channel opening in a one-to-one correspondence mode.

9. The waterway system of claim 8,

the mixed water flow channel comprises a first flow channel section and a second flow channel section, the first flow channel section is provided with a seventh flow channel opening and a ninth flow channel opening positioned on the fifth surface, the second flow channel section is provided with an eighth flow channel opening and a tenth flow channel opening positioned on the fifth surface, and the ninth flow channel opening and the tenth flow channel opening are adjacently arranged in a second embedded groove arranged on the fifth surface;

the flow regulating valve comprises a second fixed valve plate and a second movable valve plate, the second fixed valve plate is fixedly embedded in the second embedded groove, and the second movable valve plate can be attached to the second fixed valve plate in a pivoting mode around a second pivot axis;

a second water mixing hole communicated with the ninth flow passage opening and a third water mixing hole communicated with the tenth flow passage opening are arranged on the second fixed valve plate in a penetrating manner, and the second movable valve plate is provided with a sixth surface attached to the second fixed valve plate and a second water mixing groove inwards sunken from the sixth surface;

when the second movable valve plate and the second fixed valve plate are located at a sixth relative position, the second water mixing hole and the third water mixing hole are both communicated with the second water mixing groove; and in the sixth relative position, the communication area of the second water mixing hole or the third water mixing hole with the second water mixing groove changes in response to the second movable valve plate pivoting about the second pivot axis.

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