CN113551066B - Water mixing valve with backwater and water temperature adjusting functions and waterway system - Google Patents

Abstract

The application relates to a water mixing valve and a waterway system with backwater and water temperature adjusting functions, wherein the water mixing valve comprises a first fixed valve plate and a first movable valve plate, and the first movable valve plate is abutted against the first fixed valve plate in a manner of being capable of pivoting around a first pivot axis; the first fixed valve block is provided with a first surface which is attached to the first movable valve block, the first movable valve block is provided with a second surface which is attached to the first fixed valve block, a first cold water hole, a first hot water hole, a first water mixing hole and a first water return hole which extend to the first surface are arranged on the first fixed valve block in a penetrating mode, a first water mixing groove and a first water return groove which are recessed inwards from the second surface are arranged on the first movable valve block, and the first water mixing groove is communicated with the first water mixing hole.

Description

Water mixing valve with backwater and water temperature adjusting functions and waterway system

Technical Field

The application relates to a water mixing valve and waterway system with backwater 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 water and hot water, and the 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 application solves the technical problems that: a water mixing valve and waterway system with backwater and water temperature regulating functions is disclosed.

The technical scheme of the application is as follows:

in a first aspect, a water mixing valve with functions of water return and water temperature regulation is provided, including a first fixed valve plate and a first movable valve plate, where the first movable valve plate is abutted against the first fixed valve plate in a manner of being capable of pivoting around a first pivot axis;

The first fixed valve plate is provided with a first surface which is abutted against the first movable valve plate, the first movable valve plate is provided with a second surface which is abutted against the first fixed valve plate, a first cold water hole, a first hot water hole, a first water mixing hole and a first water return hole which extend to the first surface are arranged on the first fixed valve plate in a penetrating manner, a first water mixing groove and a first water return groove which are recessed 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 positioned at a first relative position, the first hot water hole and the first water return hole are 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 positioned at a second relative position, the first cold water hole is communicated with the first water mixing groove, 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 positioned at a third relative position, the first hot water hole is communicated with the first water mixing groove, 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 positioned at a fourth relative position, the first cold water hole and the first hot water hole are communicated with the first water mixing groove; and in the fourth relative position, a ratio of a communication area of the first cold water hole to the first water mixing tank to a communication area of the first hot water hole to the first water mixing tank changes in response to the first movable valve plate pivoting about the first pivot axis.

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

In an alternative design, the fourth aperture 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 alternative 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 arc-shaped holes, and the first tank body and the water return tank are arc-shaped grooves.

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

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

The dimensions of the plate are such that,

A cold water flow channel, a hot water flow channel, a mixed water flow channel and a backwater flow channel which are arranged in the plate, and

The mixing valve of the first aspect;

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

In an alternative design, the plate has a third surface and a fourth surface that are oppositely disposed, and a fifth surface that connects the third surface and the fourth surface, the cold water flow path has a first flow path opening at the third surface, and a second flow path opening at the fifth surface, the hot water flow path has a third flow path opening at the third surface, and a fourth flow path opening at the fifth surface, the return water flow path has a fifth flow path opening at the fifth surface, and a sixth flow path opening at the third surface, and the mixed water flow path has a seventh flow path opening at the fifth surface, and an eighth flow path opening at the fourth surface;

The second flow passage mouth, the fourth flow passage mouth, the fifth flow passage mouth and the seventh flow passage mouth are adjacently arranged in a first caulking groove arranged on the fifth surface, the first fixed 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 respectively communicated with the second flow passage mouth, the fourth flow passage mouth, the fifth flow passage mouth and the seventh flow passage mouth in a one-to-one correspondence manner.

In an alternative design, the water mixing channel comprises a first channel section and a second channel section, the first channel section is provided with the seventh channel opening and a ninth channel opening positioned on the fifth surface, the second channel section is provided with the eighth channel opening and a tenth channel opening positioned on the fifth surface, and the ninth channel opening and the tenth 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 is abutted against the second fixed valve plate in a mode of being capable of pivoting around a second pivot axis;

The second fixed valve plate is provided with a sixth surface which is abutted against the second fixed valve plate and a second water mixing groove which is recessed inwards from the sixth surface;

When the second movable valve plate and the second fixed valve plate are positioned at a sixth relative position, the second water mixing hole and the third water mixing hole are communicated with the second water mixing groove; and in the sixth relative position, a communication area of the second water mixing hole or the third water mixing hole and 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:

The water mixing valve has the water temperature adjusting function and the water return function, and can quickly lead out the lost cooling water in the hot water flow channel when the water temperature of the hot water flow channel is insufficient due to heat dissipation of cold water, so that the hot water which is not lost at the upstream is quickly supplemented to the hot water flow channel, particularly the water outlet end of the hot water flow channel, the water temperature of the hot water flow channel is quickly increased in a short time, and the subsequent water outlet temperature of a water terminal is beneficial to approaching to the ideal temperature required by a user.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following brief description of the drawings of the embodiments will make it apparent that the drawings in the following description relate only to some embodiments of the present application and are not limiting of the present application.

Fig. 1 is a schematic view of an external view of a water path system according to an embodiment of the application.

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

Fig. 3 is a perspective cross-sectional eleven-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 schematic perspective view of the board of fig. 1.

Fig. 8 is a partially exploded view of a mixing valve in accordance with a first embodiment of the application.

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

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

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

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

Fig. 13 is a schematic view of a first movable valve plate and a first fixed valve plate of a water mixing valve in a third relative position according to the first embodiment of the present application.

Fig. 14 is a schematic view of a first movable valve plate and a first fixed valve plate of a water mixing valve in a fourth relative position according to the first embodiment of the present application.

Fig. 15 is a schematic view of a first movable valve plate and a first fixed valve plate of a water mixing valve in a fourth relative position according to an embodiment of the present application.

Fig. 16 is a schematic view of a first movable valve plate and a first fixed valve plate of a water mixing valve in a fourth relative position according to the first embodiment of the present application. In fig. 14, 15 and 16, the communication area between the first hot water hole and the first water mixing tank increases in order.

Fig. 17 is a schematic diagram of a first movable valve plate and a first fixed valve plate of a water 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 in accordance with a first embodiment of the present application.

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

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

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

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

Reference numerals illustrate:

c1-a first pivot axis, c 2-a second pivot axis, p-a cylindrical surface;

1-cold water flow passage, 2-hot water flow passage, 3-water mixing flow passage, 4-backwater flow passage, 5-water mixing valve, 6-water use terminal, 7-flow regulating valve, 8-water temperature sensor, 9-plate and 10-outer cover;

103-a cold water joint, 203-a hot water joint and 403-a 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 casing;

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

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

5021-a first water mixing tank and 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 slot, 5022 a-second slot;

50211-a first tank body and 50212-a second tank 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, 706-a second valve housing;

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

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

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

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

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present application. It will be apparent that the described embodiments are some, but not all, embodiments of the application. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present application fall within the protection scope of the present application. It is to be understood that some of the technical means of the various embodiments described herein may be interchanged or combined without conflict.

In the description of the present specification and claims, the terms "first," "second," and the like, if any, are used merely to distinguish between the described objects and do not have any sequential or technical meaning. Thus, an object defining "first," "second," etc. may explicitly or implicitly include one or more such objects. Also, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one, and "a plurality" of "are used to indicate no less than two. The term "plurality" as used herein 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 to be construed broadly unless otherwise indicated. For example, "connected" may be connected in a split manner, or may be integrally connected; can be directly connected or indirectly connected through an intermediate medium; either non-detachably or detachably. The specific meaning of the aforementioned terms in the present application can be understood by those skilled in the art according to the specific circumstances.

In the description of the present specification and claims, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "horizontal", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of clarity and simplicity to describe the present application, rather than to indicate or imply that the elements referred to must have a specific direction, be constructed and operated in a specific azimuth, these directional terms are relative concepts for relative description and clarity, and may be changed accordingly in accordance with the change in azimuth in which the components are placed in the drawings. For example, if the device is turned over in the figures, elements described as "below" other elements would then be oriented "above" the other elements.

In the description of the present specification and claims, if the terms "sequential", "order", such as the phrase "A, B, C arranged in sequence", are used merely to indicate the arrangement of elements A, B, C, the possibility of arranging other elements between a and B and/or between B and C is not excluded.

In the description of the present specification and claims, the terms "based on," "according to," if any, are used to describe one or more factors that affect a determination. The term does not exclude additional factors affecting the determination. That is, the determination may be based solely on these factors or at least in part on these factors. For example, the phrase "determining E based on D", in which case D is a factor influencing 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, is generally interchangeable with" when … "or" at … "or" in response to a determination "depending on the context.

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

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

< Embodiment >

Fig. 1 to 22 show a first embodiment of the water system of the present application, which includes a cold water flow path 1, a hot water flow path 2, a mixed water flow path 3, a return water flow path 4, and a water use terminal 6. The water use terminal 6 is a faucet, and is provided with a water outlet communicated with the water mixing flow channel 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 communicated with the water inlet end of the mixed water flow channel 3 through the same water mixing valve 5 in an on-off mode, namely, the water mixing valve 5 is connected between the cold water flow channel 1 and the mixed water flow channel 3 and between the hot water flow channel 22 and the mixed water flow channel 33. The water inlet end of the water return flow passage 4 is also connected to the hot water flow passage 2 by the water mixing valve 5.

In this embodiment, the mixing valve 5 is used for adjusting the ratio of the communication area between the cold water channel 1 and the mixing water channel 3 to the communication area between the hot water channel 2 and the mixing water channel 3, so as to adjust the ratio of cold water to hot water entering the mixing water channel 3, thereby obtaining an ideal water temperature in the mixing water channel 3 and delivering the ideal water temperature to the water terminal 6, and meeting the requirement of users on the water temperature. The water mixing valve 5 is also used for selectively switching on or off the communication between the backwater flow passage 4 and the hot water flow passage 2. See in particular the description below.

In the present embodiment, the water terminal 6 is specifically a faucet having a water outlet, which communicates with the water outlet end of the water mixing flow path 3. In use, water flowing from the cold water channel 1 and/or the hot water channel 2 into the mixed water channel 3 is delivered to the faucet for use by a user. In other embodiments, the water terminal 6 is a shower head for bathing. It is understood that a part of the water mixing flow path 3 is formed inside the faucet as the water terminal 6.

Referring to fig. 8 to 10, the water 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 pivotable manner about a first pivot axis c1, that is, the first movable valve plate 502 is abutted against the first fixed valve plate 501, and the first movable valve plate 502 is pivotable about the first pivot axis c1 with respect to the first fixed valve plate 501. The first stator plate 501 has a first surface 501a abutting the first stator plate 502, and the first stator plate 502 has a second surface 502a abutting the first stator 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, and 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 flow channel 1, the hot water flow channel 2, the mixed water flow channel 3 and the backwater flow channel 4 are correspondingly communicated with the first cold water hole 5011, the first hot water hole 5012, the first mixed water hole 5014 and the first backwater hole 5013 respectively.

As shown in fig. 11 and referring to fig. 8-10, when the first movable valve plate 502 and the first fixed valve plate 501 are in 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 channel 1 is blocked on the second surface 502a of the first movable valve plate 502, the first water return groove 5022 communicates the first hot water hole 5012 with the first water return hole 5013, and the water (such as the cooling water of the hot water) sent from the hot water channel 2 to the first hot water hole 5012 can flow to the first water return hole 5013 through the first water return groove 5022, and is led out from the first water return hole 5013.

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

As shown in fig. 13 and referring to fig. 8 to 10, when the first movable valve plate 502 and the first fixed valve plate 501 are at the third relative position, the first hot water hole 5012 communicates with the first water mixing tank 5021, and the cold water hole is blocked by the first movable valve plate 502. In this state, water in the hot water flow path 2 flows into the first water mixing groove 5021, further flows into the first water mixing hole 5014 communicating with the first water mixing groove 5021, flows from the first water mixing hole 5014 to the water mixing flow path 3, and water in the cold water flow path 1 is blocked by the second surface 502a of the first movable valve plate 502.

As shown in fig. 14-16 and referring to fig. 8-10, when the first movable valve plate 502 and the first fixed valve plate 501 are in the fourth relative position, the first cold water hole 5011 and the first hot water hole 5012 are both in communication with the first water mixing groove 5021. And in this fourth relative position (i.e., under the premise of ensuring that both the first cold water hole 5011 and the first hot water hole 5012 are in communication with the first water mixing tank 5021), the ratio of the communication area of the first cold water hole 5011 to the first water mixing tank 5021 to the communication area of the first hot water hole 5012 to the first water mixing tank 5021 can be adjusted by pivoting the first movable valve plate 502 about the first pivot axis c1 (small angle). That is, in this fourth relative position, the ratio of the communication area of the first cold water hole 5011 to the first water mixing tank 5021 and the communication area of the first hot water hole 5012 to the second water mixing tank 7021 changes 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 channel 3.

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

Obviously, on the basis of the above technical solution, a person skilled in the art has the capability of selecting the specific structure and the specific position 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 specific structure and the specific position of the first water mixing groove 5021 and the specific position of the first water return groove 5022 on the first movable valve plate 502, so as to realize the above functions. Referring to fig. 8 to 10 again, in the present embodiment, the following design is adopted:

The fourth orifice 5014a of the first water mixing orifice 5014 and the first notch 5021a of the first water mixing groove 5021 on the second surface are all 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 in communication 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 returning 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 returning groove 5022 on the second surface 502a are all arranged on the same cylindrical surface p. I.e. the cylindrical surface p passes through the respective apertures and notches described above. The axis line of the cylindrical surface p coincides with the first pivot axis c 1. This allows the corresponding respective apertures and slots to be selectively communicated or blocked when the first movable valve plate 502 is pivoted.

The first water mixing tank 5021 is composed of a first tank 50211 and a second tank 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.

The first cold water hole 5011, the first hot water hole 5012 and the first water return hole 5013 are arc-shaped holes, and the first groove body 50211 and the water return groove are arc-shaped grooves, so that the connection area of the corresponding orifice and the notch can be controlled more conveniently.

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 meshed 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 plate 9 having a substantially rectangular parallelepiped shape, and the plate 9 is of a unitary injection-molded structure. The cold water flow path 1, the hot water flow path 2, the mixed water flow path 3 and the return water flow path 4 are all formed in the plate 9.

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

The fifth surface 9c of the plate 9 is formed with first and second inwardly recessed grooves, and the second flow passage opening 102, the fourth flow passage opening 202, the fifth flow passage opening 401, and the seventh flow passage opening 301 are adjacently disposed in the first groove. The first fixed valve plate 501 of the water mixing valve 5 is fixedly embedded in the first caulking 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 fixed valve plate are respectively communicated with the second flow passage opening 102, the fourth flow passage opening 202, the fifth flow passage opening 401 and the seventh flow passage opening 301 in a one-to-one correspondence manner.

The water mixing channel 3 includes a first channel section 3a and a second channel section 3b, the first channel section 3a has two channels on the fifth surface 9c, namely, a ninth channel 303 and the seventh channel 301, that is, the seventh channel 301 of the water mixing channel 3 is specifically disposed on the first channel section 3a. The second flow path section 3b also has two flow path ports, namely, a tenth flow path port 304 and the tenth flow path port 304 described above, that is, the tenth flow path port 304 of the mixed water flow path 3 is specifically provided in the second flow path section 3b. The aforementioned ninth runner port 303 and tenth runner port 304 are adjacently disposed in the second caulking groove.

The purpose of the above-described structure of the water mixing flow path 3 is to install a flow rate adjustment valve 7 so that the flow rate of the water mixing flow path 3 can be adjusted by the flow rate adjustment valve 7. Specifically, the flow regulating valve 7 includes a second fixed valve plate 701 and a second movable valve plate 702, where the second fixed valve plate 701 is fixedly embedded in the second caulking groove, and the second movable valve plate 702 is abutted against the second fixed valve plate 701 in a manner capable of pivoting about the second pivot axis c 2. The second fixed valve plate 701 is provided with a first water mixing hole 5014 communicating with the ninth runner port 303 and a second water mixing hole 7011 communicating with the tenth runner port 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 and referring to fig. 18 and 19, when the second movable valve plate 702 and the second fixed valve plate 701 are at the sixth relative position, the second water mixing hole 7011 and the third water mixing hole 7012 are both in communication with the second water mixing groove 7021. And in this sixth relative position (i.e., in a position where both the second water mixing hole 7011 and the third water mixing hole 7012 are ensured to communicate with the second water mixing groove 7021), the communication area of the second water mixing hole 7011 with the second water mixing groove 7021, and the communication area of the third water mixing hole 7012 with 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 this sixth relative position, 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 change in response to the second movable valve plate 702 pivoting about the second pivot axis c2, thereby adjusting the flow rate of the water mixing flow passage 3. It is understood that, in the sixth relative position, as long as the communication area between one of the second water mixing hole 7011 and the third water mixing hole 7012 and the second water mixing groove 7021 can be changed in response to the second movable valve plate 702 pivoting about the second pivot axis c2, the flow rate of the water mixing flow passage 3 can be adjusted.

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 meshed with the second worm 705 is fixed to the second movable valve plate 702. The flow rate regulating valve 7 includes a second valve housing 706 fixed to the plate 9, and the second motor 703 is fixedly installed to the second valve housing 706 of the flow rate regulating valve 7.

The waterway system is further provided with a water temperature sensor 8 thermally connected to the hot water flow passage 2, and a controller not shown in the drawing, which is communicatively connected to the water temperature sensor 8, the first motor 503, and the second motor 707. The water temperature sensor 8 is used to obtain the current water temperature of the hot water flow path 2. In practical application, when a user opens the water faucet to prepare for water consumption, if the current water temperature of the hot water flow channel 2 is detected by the water temperature sensor 8 to be obviously lower than the ideal water temperature wanted by the user, the controller generates a control instruction to the first motor 503, so that the first motor 503 drives the first movable valve plate 501 to pivot, and further the first movable valve plate and the first fixed valve plate are controlled to be at the first relative position so as to be communicated with the hot water flow channel 1 and the backwater flow channel 4, so that the lost-temperature cooling water in the hot water flow channel 2 is rapidly led out through the backwater flow channel 4, the hot water which is not lost at the upstream is rapidly 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 rapidly lifted in a short time, and the subsequent water outlet temperature of the water use terminal 6 is facilitated to be close to the ideal water temperature of the user.

Claims (9)

1. The water mixing valve with the backwater and water temperature adjusting function is characterized by comprising a first fixed valve plate and a first movable valve plate, wherein the first movable valve plate is abutted against the first fixed valve plate in a manner of being capable of pivoting around a first pivot axis;

The first fixed valve plate is provided with a first surface which is abutted against the first movable valve plate, the first movable valve plate is provided with a second surface which is abutted against the first fixed valve plate, a first cold water hole, a first hot water hole, a first water mixing hole and a first water return hole which extend to the first surface are arranged on the first fixed valve plate in a penetrating manner, a first water mixing groove and a first water return groove which are recessed 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 positioned at a first relative position, the first hot water hole and the first water return hole are 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 positioned at a second relative position, the first cold water hole is communicated with the first water mixing groove, 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 positioned at a third relative position, the first hot water hole is communicated with the first water mixing groove, 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 positioned at a fourth relative position, the first cold water hole and the first hot water hole are communicated with the first water mixing groove; and in the fourth relative position, a ratio of a communication area of the first cold water hole to the first water mixing tank to a communication area of the first hot water hole to 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 moving 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 moving valve plate.

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

4. The mixing valve of claim 3, wherein the first aperture of the first cold water bore at the first surface, the second aperture of the first hot water bore at the first surface, the third aperture of the first return water bore at the first surface, the first notch, and the second notch of the first return water channel at the second surface are all disposed on a same cylindrical surface, an axis of the cylindrical surface coinciding with the first pivot axis.

5. The mixing valve of claim 4, wherein the first mixing tank comprises a first tank disposed on the first pivot axis and a second tank disposed on the cylindrical surface, the first cold water hole, the first hot water hole, and the first return water hole are each arcuate holes, and the first tank and the first return water tank are each arcuate grooves.

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

7. A waterway system, comprising:

The dimensions of the plate are such that,

A cold water flow channel, a hot water flow channel, a mixed water flow channel and a backwater flow channel which are arranged in the plate, and

The mixing valve of any one of claims 1 to 6;

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

8. The waterway system of claim 7, wherein the plate has third and fourth surfaces disposed opposite each other and a fifth surface connecting the third and fourth surfaces, the cold water flowpath has a first flowpath port at the third surface and a second flowpath port at the fifth surface, the hot water flowpath has a third flowpath port at the third surface and a fourth flowpath port at the fifth surface, the return flowpath has a fifth flowpath port at the fifth surface and a sixth flowpath port at the third surface, the mixed water flowpath has a seventh flowpath port at the fifth surface and an eighth flowpath port at the fourth surface;

The second flow passage mouth, the fourth flow passage mouth, the fifth flow passage mouth and the seventh flow passage mouth are adjacently arranged in a first caulking groove arranged on the fifth surface, the first fixed 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 respectively communicated with the second flow passage mouth, the fourth flow passage mouth, the fifth flow passage mouth and the seventh flow passage mouth in a one-to-one correspondence manner.

9. The waterway system of claim 8, wherein the water pump is configured to pump water from the water pump,

The water mixing flow channel comprises a first flow channel section and a second flow channel section, wherein the first flow channel section is provided with the seventh flow channel port and a ninth flow channel port positioned on the fifth surface, the second flow channel section is provided with the eighth flow channel port and a tenth flow channel port positioned on the fifth surface, and the ninth flow channel port and the tenth flow channel port 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 is abutted against the second fixed valve plate in a mode of being capable of pivoting around a second pivot axis;

The second fixed valve plate is provided with a sixth surface which is abutted against the second fixed valve plate and a second water mixing groove which is recessed inwards from the sixth surface;

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