CN215494742U

CN215494742U - Waterway system

Info

Publication number: CN215494742U
Application number: CN202122036042.9U
Authority: CN
Inventors: 高峰; 刘在祥; 陈艳凤; 顾希; 蔡园丰; 严洪; 高天奇
Original assignee: Shanghai Xingye Material Technology Co Ltd
Current assignee: Shanghai Xingye Material Technology Co Ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2022-01-11
Anticipated expiration: 2031-08-26

Abstract

The application relates to a waterway system, comprising: the cold water flow passage, the hot water flow passage, the mixed water flow passage communicated with cold water flow passage and hot water flow passage respectively; the waterway system further comprises: the water return flow passage is communicated with the hot water flow passage; the water return valve is connected between the hot water flow passage and the water return flow passage and is used for disconnecting or communicating the hot water flow passage and the water return flow passage; the first water temperature sensor is connected to the hot water flow passage and used for acquiring the current first water temperature of the hot water flow passage; an operable water temperature setting element for setting a target water temperature of the mixed water flow passage; a controller in communication connection with the water return valve, the first water temperature sensor and the water temperature setting element, respectively, for: the first water temperature is acquired from the first water temperature sensor, the target water temperature is acquired from the water temperature setting element, and the water return valve is controlled according to the first water temperature and the target water temperature. This application helps guaranteeing that the temperature of mixing the water runner is close to the target temperature, promotes user experience.

Description

Waterway system

Technical Field

The present application relates to a waterway system.

Background

The traditional waterway system with cold water and hot water two-way water supply, such as a faucet system, a shower system and the like, has the defects in the aspects of structural design and water supply method, such as difficulty in realizing automatic accurate adjustment of water supply temperature and poor user experience.

The present application is hereby presented.

Disclosure of Invention

The technical problem that this application was solved is: the utility model provides a waterway system to help guaranteeing that the temperature of muddy water runner is close target temperature, promote user experience.

The technical scheme of the application is as follows:

a waterway system, comprising:

a cold water flow passage is arranged on the water tank,

a hot water flow passage, and

the water mixing flow passage is respectively communicated with the cold water flow passage and the hot water flow passage;

the waterway system further comprises:

the water return flow passage is communicated with the hot water flow passage; and

the water return valve is connected between the hot water flow passage and the water return flow passage and is used for disconnecting or communicating the hot water flow passage and the water return flow passage;

the first water temperature sensor is connected to the hot water flow passage and used for acquiring the current first water temperature of the hot water flow passage;

an operable water temperature setting element for setting a target water temperature of the mixed water flow passage; and

a controller in communication with the water return valve, the first water temperature sensor, and the water temperature setting element, respectively, for: and acquiring the first water temperature from the first water temperature sensor, acquiring the target water temperature from the water temperature setting element, and controlling the water return valve according to the first water temperature and the target water temperature.

In an alternative design, the waterway system further comprises:

the second water temperature sensor is connected to the cold water flow passage and used for acquiring the current second water temperature of the cold water flow passage;

the first flow regulating valve is connected to the hot water flow channel and used for regulating the first flow of the hot water flow channel; and

the second flow regulating valve is connected to the cold water flow channel and used for regulating the second flow of the cold water flow channel;

wherein the second water temperature sensor, the first flow regulating valve and the second flow regulating valve are all in communication connection with the controller, and the controller is further configured to: and acquiring the second water temperature from the second water temperature sensor, and controlling the first flow regulating valve and the second flow regulating valve according to the first water temperature, the target water temperature and the second water temperature.

In an alternative design, the waterway system further comprises:

the hot water tank is communicated with the hot water flow passage and is used for supplying water to the hot water flow passage; and

the third water temperature sensor is connected to the hot water tank and used for acquiring the current third water temperature of the hot water tank;

wherein the third water temperature sensor is in communication with the controller, the controller further configured to: and acquiring the third water temperature from the third water temperature sensor, and controlling the water return valve according to the first water temperature, the target water temperature and the third water temperature.

In an alternative design, the waterway system further comprises:

a first component, and

the water mixing valves are connected between the hot water flow channel and the water mixing flow channel and between the cold water flow channel and the water mixing flow channel;

the cold water flow channel is provided with a first flow channel opening and a second flow channel opening which are positioned on the surface of the first component, the hot water flow channel is provided with a third flow channel opening, a fourth flow channel opening and a fifth flow channel opening which are positioned on the surface of the first component, the water return flow channel is provided with a sixth flow channel opening and a seventh flow channel opening which are positioned on the surface of the first component, and the water mixing flow channel is provided with an eighth flow channel opening and an eleventh flow channel opening which are positioned on the surface of the first component;

mix water valve includes first fixed valve block and first movable valve block, wherein, first fixed valve block with first subassembly is fixed, first movable valve block pastes in order to lean on around the mode of first pivot axis pivot first fixed valve block, first fixed valve block has to paste and leans on the first surface of first movable valve block, first movable valve block has to paste and lean on the second surface of first fixed valve block, link up the setting on the first fixed valve block and extend to the first surface: a first cold water hole communicated with the second flow passage port, a first hot water hole communicated with the fourth flow passage port, and a first water mixing hole communicated with the eighth flow passage port, wherein a first water mixing groove which is recessed inwards from the second surface is arranged on the first movable valve body;

when the first movable valve plate and the first fixed valve plate are located at a first relative position, the first cold water hole and the first water mixing hole are both communicated with the first water mixing groove, and the first 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 second relative position, the first hot water hole and the first water mixing hole are communicated with the first water mixing 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 third relative position, the first hot water hole, the first cold water hole and the first water mixing hole are communicated with the first water mixing groove;

when the first movable valve plate and the first fixed valve plate are located at a fourth relative position, the first hot water hole and the first cold water hole are both blocked by the first movable valve plate;

the backwater valve includes that second fixed valve block and second move the valve block, wherein, the second fixed valve block with first subassembly is fixed, the second moves the valve block and leans on in order to lean on around the mode of second pivot axis pivot second fixed valve block, the second fixed valve block has to lean on the third surface that the valve block was moved to the second, the second moves the valve block and has to lean on the fourth surface of second fixed valve block, link up the setting on the second fixed valve block and extend to the third surface: the first water return hole is communicated with the fifth flow channel opening, the second water return hole is communicated with the sixth flow channel opening, and the second movable valve plate is provided with a first water return groove which is inwards sunken from the fourth surface;

when the second movable valve plate and the second fixed valve plate are located at a fifth relative position, the first water return hole and the second water return hole are both communicated with the first water return groove;

and when the second movable valve plate and the second fixed valve plate are located at a sixth relative position, the first water return hole and/or the second water return hole are/is blocked by the second movable valve plate.

In an optional design, the mixed water flow passage comprises a first mixed water flow passage section and a second mixed water flow passage section, the first mixed water flow passage comprises the eighth flow passage and a ninth flow passage positioned on the surface of the first component, and the second mixed water flow passage comprises the eleventh flow passage and a tenth flow passage positioned on the surface of the first component;

the waterway system further comprises a third flow regulating valve, the third flow regulating valve comprises a third fixed valve plate and a third movable valve plate, the third fixed valve plate is fixed to the first component, the third movable valve plate is attached to the third fixed valve plate in a pivoting mode around a third pivot axis, the third fixed valve plate is provided with a fifth surface attached to the third movable valve plate, the third movable valve plate is provided with a sixth surface attached to the third fixed valve plate, and the third fixed valve plate is provided with a third surface which is connected to the fifth surface in a penetrating mode and extends to the fifth surface: a first water flowing hole communicated with a ninth flow passage opening and a second water flowing hole communicated with a tenth flow passage opening, wherein a first water flowing groove which is sunken inwards from the sixth surface is arranged on the third movable valve plate;

when the third movable valve plate and the third fixed valve plate are positioned at a seventh relative position, the first water flowing hole and the second water flowing hole are both communicated with the first water flowing groove;

and when the third movable valve plate and the third fixed valve plate are positioned at the eighth relative position, the first water flowing hole and/or the second water flowing hole are/is blocked by the third movable valve plate.

In an alternative design, the third orifice of the first water mixing hole on the first surface and the first notch of the first water mixing groove on the second surface are both arranged on the first pivot axis, and 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 and the first notch are all arranged on the same cylindrical surface;

the first slot includes a first sector and a second sector, a first radius of the first sector being less than a second radius of the second sector, the third aperture being a circular aperture having a radius equal to the first radius, the first aperture and the second aperture each being an arcuate aperture having an outside radius equal to the second radius, a circular centerline of the first sector, a circular centerline of the second sector, a circular centerline of the first aperture, and a circular centerline of the second aperture each coinciding with the first pivot axis;

the first sector portion is projected entirely within the third aperture in a direction of the length of the first pivot axis;

the first apertures may be projected entirely within the second sector and the second apertures may be projected entirely within the second sector in a direction of the length of the first pivot axis;

the maximum circumferential distance between the first and second orifices occupies an arc on the cylindrical surface equal to the arc occupied by the first notch on the cylindrical surface, and the arc of the second sector is less than 180 degrees

The application has at least the following beneficial effects:

when the current water temperature of the hot water flow channel is lower than the target water temperature of the mixed water flow channel, the communication between the cold water flow channel and the hot water flow channel and the mixed water flow channel is disconnected, cooling water in the hot water flow channel is led out by the return water flow channel, so that uncooled hot water in the upstream is rapidly supplemented into the hot water flow channel, the water temperature of the hot water flow channel is rapidly increased in a short time, and the water temperature of the mixed water flow channel is ensured to be close to the target temperature in the subsequent process.

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 a schematic view of a waterway system in an embodiment of the present application.

Fig. 2 is a schematic view of a waterway system in the second embodiment of the present application.

FIG. 3 is a schematic view of a waterway system in the third embodiment of the present application.

Fig. 4 is a schematic view of a waterway system in the fourth embodiment of the present application.

Fig. 5 is a partially exploded schematic view of fig. 4.

Fig. 6 is a partial schematic view of fig. 4.

Fig. 7 is an exploded view of fig. 6.

Fig. 8 is a partial schematic view of fig. 7.

FIG. 9 is a schematic view of FIG. 6 with the third, fourth and fifth fixed valve plates assembled.

FIG. 10 is a schematic view of FIG. 9 with the fourth, fifth and sixth movable valve plates assembled.

Fig. 11 is a schematic view of fig. 10 assembled with the motor, worm gear, worm and battery backup.

Fig. 12 is a schematic view of fig. 11 with the rear cover and joint assembled.

Fig. 13 is an exploded schematic view of a third fixed valve plate and a fourth movable valve plate of the mixing valve in the fourth embodiment of the present application.

Fig. 14 is a schematic view of fig. 13 with the addition of a third pivot axis and a second cylindrical surface.

FIG. 15 is a schematic structural diagram of the fourth movable valve plate.

Fig. 16 is a schematic view of a mixing valve according to a fourth embodiment of the present application, showing a third fixed valve plate and a fourth movable valve plate in another view.

Fig. 17 is a schematic plan view illustrating a third fixed valve plate and a fourth movable valve plate of a mixing valve in a first matching state according to a fourth embodiment of the present application.

Fig. 18 is a schematic plan view of a third fixed valve plate and a fourth movable valve plate of the mixing valve in a second matching state according to the fourth embodiment of the present application.

Fig. 19 is a schematic plan view of a third fixed valve plate and a fourth movable valve plate of a mixing valve in a third matching state according to the fourth embodiment of the present application.

Fig. 20 is a schematic plan view illustrating a fourth matching state of the third fixed valve plate and the fourth movable valve plate of the mixing valve in the fourth embodiment of the present application.

Fig. 21 is a schematic plan view of a fourth fixed valve plate and a fourth movable valve plate of a mixing valve in a fifth matching state according to the fourth embodiment of the present application.

Fig. 22 is a schematic plan view illustrating a sixth matching state of the third fixed valve plate and the fourth movable valve plate of the mixing valve in the fourth embodiment of the present application.

FIG. 23 is an exploded view of the fourth fixed valve plate and the fifth movable valve plate of the water return valve according to the fourth embodiment of the present application.

FIG. 24 is an exploded view of the fourth fixed valve plate and the fifth movable valve plate of the water return valve according to the fourth embodiment of the present application from another perspective.

FIG. 25 is a schematic view of the fourth fixed valve plate and the fifth movable valve plate in a water passing engagement state in the fourth embodiment of the present application.

FIG. 26 is a schematic view of the fourth fixed valve plate and the fifth movable valve plate in a water-break engagement state in the fourth embodiment of the present application.

Fig. 27 is an exploded schematic view of a fourth fixed valve plate and a fifth movable valve plate of the first flow rate regulating valve according to the fourth embodiment of the present application.

Fig. 28 is an exploded view of the fourth fixed valve plate and the fifth movable valve plate of the first flow rate adjustment valve according to the fourth embodiment of the present application from another perspective.

Fig. 29 is a schematic view of a waterway system in the fifth embodiment of the present application.

Fig. 30 is a partially exploded schematic view of fig. 29.

Fig. 31 is a partial schematic view of fig. 29.

Fig. 32 is a schematic view of fig. 31 with the rear cover installed.

Fig. 33 is a flowchart of a water supply method according to a sixth embodiment of the present application.

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.

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

< example one >

Fig. 1 shows a first embodiment of a waterway system including a water usage terminal 22, a cold water flow passage 1, a hot water flow passage 2, a mixed water flow passage 3, a mixing valve 6, a return water flow passage 4, a return water valve 18, a first water temperature sensor 11, a water temperature setting member 8, and a controller 10.

In the present embodiment, the water use terminal 22 is a faucet having a water outlet communicating with the mixing flow channel 3. When the water tap is used, water flowing into the mixed water flow channel 3 from the cold water flow channel 1 and/or the hot water flow channel 2 is sent to the water outlet of the water tap for users to use. In other embodiments, the water use terminal 22 is a shower head for bathing. It will be appreciated that a portion of the mixing flow path 3 is formed inside the faucet as the water use terminal 22.

The water outlet end of the cold water flow passage and the water outlet end of the hot water flow passage are communicated with the water inlet end of the mixed water flow passage 3 through the same mixed water valve 6, namely, the mixed water valve 6 is connected between the cold water flow passage 1 and the mixed water flow passage 3 and between the hot water flow passage 2 and the mixed water flow passage 3. The mixing valve 6 is used for adjusting the ratio of the communication area of the cold water flow channel 1 and the mixing flow channel 3 to the communication area of the hot water flow channel 2 and the mixing flow channel 3, so that the ratio of cold water and hot water entering the mixing flow channel 3 is adjusted, an ideal water temperature is obtained in the mixing flow channel 3 and is conveyed to the water using terminal 22, and the requirement of a user on the water using temperature is met. In this embodiment, the mixing valve 6 may also adjust a communication area between any one of the cold water flow passage 1 and the hot water flow passage 2 and the mixing water flow passage 3 to zero. The first water temperature sensor 11 is connected to the hot water flow passage 2 and is configured to obtain a current first water temperature of the hot water flow passage 2. The return flow passage 4 is communicated with the hot water flow passage 2, and the return valve 18 is connected between the return flow passage 4 and the hot water flow passage 2 and is used for connecting or disconnecting the communication between the return flow passage 4 and the hot water flow passage 2. Therefore, when the temperature of the hot water flow passage 2 is low, the water return valve 18 is opened, the low-temperature water in the hot water flow passage 2 is controlled to be quickly led out, and hot water which is not lost at the upstream flows in; and when the temperature of the hot water flow passage 2 is enough, the water return valve 18 is closed, so that the water return flow passage 4 is separated from the hot water flow passage 2. A water return valve 18 is arranged on a communication path of the water return flow passage 4 and the hot water flow passage 2, and the water return valve 18 is an electromagnetic valve and is in communication connection with the controller 10. The controller 10 is used for controlling the water return valve 18 to open or close, and further controlling the water return flow passage 4 to be communicated with or separated from the hot water flow passage 2. The water temperature setting element 8 may be manually or acoustically operated for setting a target water temperature of the mixing water channel 3. The controller 10 is in communication connection with the first water temperature sensor 11, the water temperature setting element 8 and the water mixing valve 6, respectively, so as to obtain a current first water temperature of the hot water flow passage 2 from the first water temperature sensor 11, obtain a target water temperature of the water mixing flow passage 3 from the water temperature setting element 8, and control the operating state of the water return valve 18 according to the first water temperature and the target water temperature.

In practice, the user will also typically have a demand for the output flow rate from the water use terminal 22, particularly a faucet. Thus, the waterway system of the present embodiment is further provided with the first flow regulating valve 7 and the manually operable (including voice-operated) flow setting member 9. The first flow regulating valve 7 is connected to the mixed water flow channel 3, and when the water mixing device is used, the flow of the mixed water flow channel 3 is regulated by regulating the opening degree of the first flow regulating valve 7. The flow setting element 9 is used to set a target flow of the mixing flow channel 3. The first flow regulating valve 7 and the flow setting element 9 are both communicatively connected to the controller 10, and the controller 10 may be further configured to: the target flow rate of the mixed water flow passage 3 is obtained from the flow rate setting element 9, and the working state of the first flow regulating valve 7 is controlled.

In order to enable all components of the waterway system, except the water usage terminal 22, to be manufactured and sold as a single product, the user can upgrade the functions of the original water usage terminal 22 (such as a faucet, a shower head, etc.) by purchasing the single product, and a housing 26 is provided in this embodiment. The housing 26 is used for carrying and centralizing the cold water flow passage 1, the hot water flow passage 2, the mixed water flow passage 3, the mixed water valve 6, the first water temperature sensor 11, the water temperature setting element 8, the flow rate setting element 9 and the controller 10. The water temperature setting element 8 and the flow rate setting element 9 are disposed on the outer surface of the housing 26, and the cold water flow passage 1, the hot water flow passage 2, the mixed water flow passage 3, the return water flow passage 4, the mixed water valve 6, the first water temperature sensor 11, and the controller 10 are accommodated and fixed in the housing 26. Moreover, for the independent product, the water inlet end of the cold water flow passage 1, the water inlet end of the hot water flow passage 2, and the water outlet end of the mixed water flow passage 3 all extend out of the housing 26 and are provided with connecting threads to facilitate connection with external pipelines and the water using terminal 22. It can be seen that the cold water flow passage 1 and the hot water flow passage 2 in the separate product each have a water inlet joint extending outside the housing 26, and the mixed water flow passage 3 in the separate product has a water outlet joint extending outside the housing 26.

To facilitate the reader's view of the internal structure of the waterway system, the housing in fig. 1 is opened.

In this embodiment, the water temperature setting element 8 and the flow setting element 9 are two independently operable knobs. In other embodiments, the water temperature setting element 8 and the flow setting element 9 are integrated in the same touch screen.

Referring to fig. 1 again, in order to better control the working states of the water return valve 18, the water mixing valve 6 and the first flow regulating valve 7, the waterway system of the present embodiment is further provided with a second water temperature sensor 12, and the second water temperature sensor 12 is connected to the cold water flow passage 1 and is used for acquiring the current second water temperature of the cold water flow passage 1. The second water temperature sensor 12 is communicatively connected to the controller 10, so that the controller 10 can acquire the current second water temperature of the cold water flow path 1 from the second water temperature sensor 12, and the controller 10 can further control the operation state of the relevant elements based on the second water temperature.

In the present embodiment, the mixing valve 6 and the first flow regulating valve 7 are both motor-driven valves, which are commercially available or can be obtained by simply changing a conventional valve.

In another embodiment, the waterway system is further configured with a hot water tank and a third water temperature sensor. Wherein, the hot-water cylinder is communicated with the hot-water flow passage 2 and is used for providing a hot-water source for the hot-water flow passage 2, and the third water temperature sensor is connected to the hot-water cylinder so as to obtain the third water temperature of the hot-water cylinder. The hot water in the hot water tank can be provided by a solar water heater. The third water temperature sensor is in communication with the controller 10. In this way, the controller 10 may further control the operation state of the water return valve 18 according to the first water temperature (i.e., the water temperature in the hot water flow passage 2) and the third water temperature (i.e., the water temperature in the hot water tank). For example, when the first water temperature is equal to or lower than the third water temperature, it is indicated that the upstream water temperature is not sufficient and no water return is necessary, and therefore, the return valve 18 should be controlled to be closed at this time to disconnect the communication between the return water flow passage 4 and the hot water flow passage 2.

< example two >

Fig. 2 shows a second embodiment of a waterway system, which is similar in structure to the first embodiment and can be understood with reference to the description of the first embodiment, with the following main differences:

in the present embodiment, the waterway system 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, a return water valve 18, a first water temperature sensor 11, a second flow rate adjustment valve 14, a third flow rate adjustment valve 15, a water temperature setting element 8, a flow rate setting element 9, and a controller 10. The water outlet end of the cold water flow channel 1 is communicated with the water inlet end of the mixed water flow channel 3 through a second flow regulating valve 14, and when the water mixing device is used, the flow of the cold water flow channel 1 can be regulated by regulating the opening degree of the second flow regulating valve 14. The water outlet end of the hot water flow passage 2 is communicated with the water inlet end of the mixed water flow passage 3 through a third flow regulating valve 15, and when the water mixing device is used, the flow of the hot water flow passage 2 can be regulated by regulating the opening degree of the third flow regulating valve 15. It can be understood that, by adjusting the opening degrees of the second flow regulating valve 14 and the third flow regulating valve 15, the water temperature of the mixed water flow channel 3 can be regulated, and the flow rate of the mixed water flow channel 3 can be regulated, so as to meet the requirements of users on the water temperature and the water flow rate. The first water temperature sensor 11 is connected to the hot water flow passage 2 and is configured to obtain a current first water temperature of the hot water flow passage 2. . A manually operable (or voice-operated) water temperature setting element 8 is used to set the target water temperature of the mixing water channel 3. A manually operable (or voice-operated) flow setting element 9 is used to set the target flow of the mixing channel 3. The controller 10 is in communication connection with the first water temperature sensor 11, the water temperature setting element 8, the flow setting element 9, the water return valve 18, the second flow regulating valve 14 and the third flow regulating valve 15 respectively, so as to obtain the current first water temperature of the hot water flow channel 2, the target water temperature of the mixed water flow channel 3 and the target flow of the mixed water flow channel 3 from the first water temperature sensor 11, the water temperature setting element 8 and the flow setting element 9 respectively, and control the working states of the water return valve 18, the second flow regulating valve 14 and the third flow regulating valve 15.

In this embodiment, the water temperature setting element 8 is a pair of buttons with "+" and "-" respectively, and the flow setting element 9 is another pair of buttons with "+" and "-" respectively.

In another embodiment, a second water temperature sensor for acquiring a current second water temperature of the cold water flow passage 1 is further disposed on the cold water flow passage 1, and the second water temperature sensor is connected to the controller 10 in a communication manner, so that the controller 10 can further control the operation state of the relevant elements based on the second water temperature.

< example three >

Fig. 3 shows a third embodiment of the waterway system, which has a structure similar to that of the first embodiment, and can be understood with reference to the description of the first embodiment, and the main differences are as follows:

the waterway system of this embodiment is further configured with an electric heater 5, and the electric heater 5 is connected to the hot water channel 2, and can heat the hot water channel 2 when the water temperature of the hot water channel 2 is low, so as to raise the water temperature of the hot water channel 2.

As described above, the return water flow passage 4 communicating with the hot water flow passage 2 can lead out the cooling water of the hot water flow passage 2 as needed, so that the hot water without losing temperature at the upstream flows in, and the water temperature of the hot water flow passage 2 is raised. However, the foregoing effect is achieved based on the fact that the temperature of the unsettled water upstream of the hot water flow passage is not less than the target water temperature of the mixed water flow passage 3. Therefore, the electric heater 5 for heating the hot water flow passage 2 is configured in the embodiment, and the hot water flow passage 2 can be heated by the electric heater 5 to meet the requirement of the user on the water temperature under the condition that the water temperature at the upstream of the hot water flow passage 2 is less than the target water temperature of the mixed water flow passage.

In addition, when the temperature difference between the target water temperature of the mixed water flow passage 3 and the current first water temperature of the hot water flow passage 2 is small, the electric heater 5 can be used for heating the hot water flow passage 2 to meet the requirement of a user on the water temperature.

< example four >

Fig. 4 and 28 show a fourth embodiment of a waterway system, which is similar in structure to the first embodiment and can be understood with reference to the description of the first embodiment, with the main difference that:

in the present embodiment, the waterway system includes the first member 21 and the second member 28, and 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 all at least partially formed in the first member 21, not in the water pipe. The first member 21 has a seventh surface 2101a, an eighth surface 2101b, and a ninth surface 2102a, wherein the seventh surface 2101a and the ninth surface 2102a are located on opposite sides of the first member 21, respectively. The cold water flow passage 1, the hot water flow passage 2, and the return water flow passage 4 each penetrate from the seventh surface 2101a to the eighth surface 2101b, and the hot water flow passage 2 has two flow port openings at the eighth surface 2101 b. Specifically, the cold water flow passage 1 has a first flow port 101 at the seventh surface 2101a and a second flow port 102 at the eighth surface 2101 b. The hot water flow path 2 has a third flow path opening 201 at the seventh surface 2101a, and a fourth flow path opening 202 and a fifth flow path opening 203 spaced apart from each other at the eighth surface 2101 b. The return water flow passage 4 has a sixth flow passage opening 401 at the eighth surface 2101b and a seventh flow passage opening 402 at the seventh surface 2101 a. The mixing flow channel 3 comprises two flow channel sections separated from each other, namely a first mixing flow channel section 3a and a second mixing flow channel section 3 b. The first mixing flow path section 3a has an eighth flow port 301 and a ninth flow port 302 on the eighth surface 2101 b. The second mixing flow path section 3b extends from the eighth surface 2101b to the ninth surface 2102 a. The second mixing flow path section 3b has a tenth flow opening 303 at the eighth surface 2101b and an eleventh flow opening 304 at the ninth surface 2102 a. The faucet is connected to the eleventh runner port 304.

The second, fourth and

eighth junctions

102, 202, 301 are adjacent in pairs, the fifth and

sixth junctions

203, 401 are adjacent in pairs, and the ninth and

tenth junctions

302, 303 are adjacent in pairs.

In the present embodiment, the mixing valve 6 includes a first fixed valve plate 609 and a first movable valve plate 610, the first movable valve plate 610 abuts against the first fixed valve plate 609 in a manner of being capable of pivoting about a third pivot axis c3, and the first fixed valve plate 609 is fixed on the eighth surface 2101b of the first component 21. The first fixed valve plate 609 has a first surface 609a abutting the first movable valve plate 610, and the first movable valve plate 610 has a second surface 610a abutting the first fixed valve plate 609. The first stationary plate 609 is provided with a first cold water hole 6091, a first hot water hole 6092 and a first water mixing hole 6093 which extend to the first surface 609 a. The first cold water hole 6091 is communicated with the second flow port 102 of the cold water flow channel 1, the first hot water hole 6092 is communicated with the fourth flow port 202 of the hot water flow channel 2, and the first mixing water hole 6093 is communicated with the eighth flow port 301 of the mixing water flow channel 3. The second surface 610a of the first movable valve plate 610 is formed with a first water mixing groove 6101 recessed inwards. The first mixing groove 6101 has a second notch 6101a on the second surface 610 a.

When the first movable valve plate 610 and the first fixed valve plate 609 are located at the first relative position, the first water mixing groove 6101 is respectively communicated with the first cold water hole 6091 and the first water mixing hole 6093, the first hot water hole 6092 is blocked by the first movable valve plate 610, and only the water in the cold water flow passage 1 can flow to the water mixing flow passage 3 through the water mixing valve 6.

When the first movable valve plate 610 and the first fixed valve plate 609 are located at the second relative position, the first water mixing groove 6101 is respectively communicated with the first hot water hole 6092 and the first water mixing hole 6093, the first cold water hole 6091 is blocked by the first movable valve plate 610, and only the water in the hot water flow passage 2 can flow to the water mixing flow passage 3 through the water mixing valve 6.

When the first movable valve plate 610 and the first fixed valve plate 609 are located at the third relative position, the first water mixing groove 6101 is respectively communicated with the first cold water hole 6091, the first hot water hole 6092 and the first water mixing hole 6093, and water in the cold water flow passage 1 and the hot water flow passage 2 can flow to the water mixing flow passage 3 through the water mixing valve 6.

When the first movable valve plate 610 and the first fixed valve plate 609 are located at the fourth relative position, the first cold water hole 6091 and the first hot water hole 6092 are both blocked by the first movable valve plate 610, and water in the cold water flow passage 1 and water in the hot water flow passage 2 cannot flow to the mixed water flow passage 3.

Obviously, on the basis of the above technical solutions, those skilled in the art are fully capable of selecting the specific structure and specific position of the first cold water hole 6091, the first hot water hole 6092, and the first water mixing hole 6093 on the first fixed valve plate 609, and the first water mixing groove 6101 on the first movable valve plate 610, so as to achieve the above functions. Specifically, in the present embodiment, the following preferable design is adopted:

the eighth orifice 6091a of the first cold water hole 6091 on the first surface 609a, the ninth orifice 6092a of the first hot water hole 6092 on the eleventh surface, and the second notch 6101a of the first water mixing groove 6101 are all disposed on the cylindrical surface p. The axis of the cylindrical surface p coincides with the third pivot axis c 3. This allows the corresponding apertures and slots to be selectively communicated or blocked when the first movable valve plate 610 is pivoted.

The first mixing hole 6093 is disposed on the third pivot axis c3 at both the thirteenth hole 6093a of the first surface 609a and the second notch 6101a of the first mixing slot 6101. Therefore, when the fourth movable valve blade pivots to any angle around the third pivot axis c3, the first water mixing groove 6101 is always communicated with the first water mixing hole 6093.

Further, the second slot 6101a includes a first fan-shaped portion 6101a1 and a second fan-shaped portion 6101a2, the first radius of the first fan-shaped portion 6101a1 being less than the second radius of the second fan-shaped portion. The third orifice is a circular orifice with a radius equal to the first radius, and the first orifice and the second orifice are both arc orifices with an outside radius equal to the second radius. Also, the circle center line of the first sector portion 6101a1, the circle center line of the second sector portion 6101a2, the circle center line of the eighth aperture 6091a, and the circle center line of the ninth aperture 6092a all coincide with the third pivot axis c 3. Thereby facilitating control of the access area of the corresponding apertures and notches.

Further, in the length direction of the first pivot axis, the first sector portion 6101a1 is projected entirely within the thirteenth aperture 6093 a; in the direction of the length of the first pivot axis, eighth aperture 6091a can be projected entirely within the second sector, and ninth aperture 6092a can also be projected entirely within second sector 6101a 2.

Further, the arc degree occupied by the cylindrical surface p of the second notch 6101a (particularly, the second sectorial portion 6101a2 of the second notch) is equal to the arc degree occupied by the maximum circumferential distance between the eighth port 6091a and the ninth port 6092a, and the arc degree of the second sectorial portion 6101a2 is less than 180 °. So make, fourth movable valve piece can be with the shutoff simultaneously of third cold water hole and third hot water hole.

In this embodiment, first cold water hole, first hot water hole and first muddy water hole are the even hole of cross section, and the second muddy water groove is the even groove of cross section to first cold water hole, first hot water hole and first muddy water hole all link up first fixed valve piece along the length direction of third pivot axis c3, and first muddy water groove is along being on a parallel with the length direction of third pivot axis c3 from the inside sunken of second surface. In the present embodiment, the water return valve 18 includes the second fixed valve plate 1801 and the second movable valve plate 1802, and the second movable valve plate 1802 abuts against the second fixed valve plate 1801 in a manner of being able to pivot about the second pivot axis c 2. The second stationary valve plate 1801 has a third surface 1801a that abuts the second movable valve plate, and the second movable valve plate 1802 has a fourth surface 1802a that abuts the second stationary valve plate. The second stationary blade is provided with a through hole extending to the third surface 1801 a: a first water return hole 18011 communicated with the fifth flow channel port, and a second water return hole 18012 communicated with the sixth flow channel port, and a first water return groove 18021 recessed inwards from the fourth surface 1802a is arranged on the second movable valve plate 1802. The second stationary plate 1801 is fixed to the eighth surface 2101b of the first member 21.

When the second movable valve plate 1802 and the second fixed valve plate 1801 are located at the fifth relative position, the first water return channel 18021 is respectively communicated with the first water return hole 18011 and the second water return hole 18012, and water in the hot water flow channel 2 can flow to the water return flow channel 4 through the water return valve 18.

When the second movable valve plate 1802 and the second fixed valve plate 1801 are located at the sixth relative position, the first return hole 18011 or/and the second return hole 18012 is blocked by the second movable valve plate 1802, the first return groove 18021 is not blocked by the first return hole 18011 and the second return hole 18012 at the same time, and water communicated with the hot water flow passage 2 is blocked by the return valve 18 and cannot flow to the return water flow passage 4.

In order to increase the maximum flow area of the water return valve 18, in this embodiment, an inwardly recessed second water return groove 18022 is further provided on the above-mentioned fourth surface 1802a of the second movable valve plate 1802, and the second water return groove 18022 is arranged to be spaced apart from the first water return groove 18021. When the second movable valve plate 1802 and the second fixed valve plate 1801 are located at the fifth relative position, the second water return groove 18022 is also communicated with the first water return hole 18011 and the second water return hole 18012, respectively. When the second movable valve plate 1802 and the second fixed valve plate 1801 are located at the sixth relative position, the second water return groove 18022 is also not simultaneously communicated with the first water return hole 18011 and the second water return hole 18012, so that the water in the hot water flow passage 2 still cannot enter the water return flow passage 4 through the water return valve 18.

The first flow valve comprises a third fixed valve plate 701 and a third movable valve plate 702, the third movable valve plate 702 abuts against the third fixed valve plate 701 in a manner of being capable of pivoting around a fifth pivot axis c5, the third fixed valve plate 701 is fixed on a fifth surface 701a of the first assembly 21, and the third movable valve plate 702 has a sixth surface 702a abutting against the third fixed valve plate. The third fixed valve plate 701 is provided with a first water outlet 7011 and a second water outlet 7012 extending to the fifth surface 701a in a penetrating manner, wherein the first water outlet 7011 is communicated with the ninth flow channel port 302 of the mixed water flow channel 3, and the second water outlet 7012 is communicated with the tenth flow channel port 303 of the mixed water flow channel 3. The third movable valve plate 702 is provided with a first water trough 7021 recessed inward from the sixth surface 702 a.

When the third movable valve plate 702 and the third fixed valve plate 701 are located at the seventh relative position, the first water flowing groove 7021 is respectively communicated with the first water flowing hole 7011 and the second water flowing hole 7012, so that the water in the first water mixing flow passage section 3a can flow into the second water mixing flow passage section 3b through the first flow valve, and further flow from the eleventh flow passage opening 304 of the second water mixing flow passage section 3b to the water using terminal 22. In addition, at the seventh relative position, the communication area between the first water outlet 7021 and the first water outlet 7011 and/or the second water outlet 7012, i.e., the opening of the first flow valve, can be adjusted by adjusting the pivot angle of the third movable valve plate 702, so as to adjust the flow rate of the mixed water flow passage 3.

When the third movable valve plate 702 and the third fixed valve plate 701 are located at the eighth relative position, the first water outlet 7011 or/and the second water outlet 7012 is/are blocked by the third movable valve plate 702, and the water in the first water mixing flow passage section 3a is blocked by the first flow valve and cannot flow to the second water mixing flow passage section 3b and the water use terminal 22.

In order to facilitate the installation and fixation of the first fixed valve plate 609 of the water mixing valve 6, the second fixed valve plate 1801 of the water return valve 18, and the third fixed valve plate 701 of the first flow valve on the first assembly 21, in this embodiment, three assembling grooves 2102b are provided on the eighth surface 2101b of the first assembly 21, and the first fixed valve plate 609, the second fixed valve plate 1801, and the third fixed valve plate 701 are respectively embedded in the three assembling grooves 2102 b.

In other embodiments, the first fixing valve plate 609, the second fixing valve plate 1801, the third fixing valve plate 701 and the first component 21 are of an integrated structure made of the same material, that is, the first fixing valve plate 609, the second fixing valve plate 1801 and the third fixing valve plate 701 are integrally fixed on the first component 21. Equivalently, the first fixed valve plate 609, the second fixed valve plate 1801 and the third fixed valve plate 701 in fig. 5 are removed, and the parts of the device at the three assembling grooves 2102b of the eighth surface 2101b are directly regarded as the first fixed valve plate 609, the second fixed valve plate 1801 and the third fixed valve plate 701 respectively.

To facilitate the production of the first assembly 21 described above, in this embodiment the first assembly 21 includes a first plate 2101 and a second plate 2102 secured against each other. 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 by the first plate 2101 and the second plate 2102 together. The seventh surface 2101a and the ninth surface 2102a of the first member 21 are formed on the first plate 2101, and the eighth surface 2101b of the first member 21 is formed on the second plate 2102. The tenth surface of the first plate 2101, which is adjacent to the second plate 2102, is formed with five inwardly recessed channels, and one end of each of the three channels is provided with a through hole extending to the seventh surface 2101a, which respectively forms the first flow port 101, the third flow port 201 and the seventh flow port 402, and one end of one channel is provided with a through hole extending to the ninth surface 2102 a. The second plate 2102 has a plurality of water supply holes formed therethrough. After the second plate 2102 and the first plate 2101 are assembled, the first cover body closes most of the area of the five channel notches on the tenth surface, the water outlet holes are respectively located at the positions corresponding to the channel notches to communicate with the corresponding channel notches, so that 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 of the structure are formed by the first plate 2101 and the second plate 2102 together, and the water outlet holes on the second plate 2102 respectively form corresponding flow channel openings.

In this embodiment, the first movable valve plate 610, the second movable valve plate 1802 and the third movable valve plate 702 are respectively driven to pivot by three motors 16. Specifically, each motor 16 is connected with the corresponding movable valve plate through a worm 24 and a worm wheel 23 which are meshed with each other, wherein the worm wheel 23 is fixed with the movable valve plate and is coaxially arranged with the corresponding pivot axis, the socket rod is coaxially fixed with an output shaft of the motor 16, the motor 16 operates to drive the worm 24 to pivot, the worm 24 drives the worm wheel 23 meshed with the worm to pivot, and the worm wheel 23 drives the corresponding fixed valve body fixed with the worm wheel to pivot synchronously. The three motors 16 are all connected to the controller 10 in communication, so that the controller 10 can control the operation of the mixing valve 6, the return valve 18 and the first flow valve.

A second component 28 is attached and fixed to the second plate side of the first component, the second component 28 comprising a third plate 2801 and a fourth plate 2802 attached and fixed, and the first plate 2101, the second plate 2102, the third plate 2801 and the fourth plate 2802 are arranged in this order. The second module 28 and in particular the fourth plate on the second module is mainly protective.

In this embodiment, the first flow port 101 of the cold water flow channel 1, the third flow port 201 of the hot water flow channel 2, and the seventh flow port 402 of the return water flow channel 4 are respectively connected to a cold water joint, a hot water joint, and a return water joint which are fixed to the first component and have flow channels, so as to facilitate connection with an external pipeline. Obviously, the cold water joint, the hot water joint and the return water joint are also part of the cold water channel 1, the hot water channel 2 and the return water channel 4 of the waterway system respectively. A first water temperature sensor 11 for sensing the water temperature of the hot water flow passage 2 and a second water temperature sensor 12 for sensing the water temperature of the cold water flow passage 1 are installed at the hot water junction and the cold water junction, respectively, as shown in fig. 4 and 5.

In this embodiment, the water temperature setting element 8 and the flow rate setting element 9 of the waterway system are integrated into a water adjusting handle which can be lifted up and down and rotated left and right, and the water adjusting handle is in communication with the controller 10, so that the controller 10 can control the electric heater 5, the water mixing valve 6, the water return valve 18 and the first flow rate valve to operate in corresponding states in response to the operation of the water adjusting handle. For example: when the user presses the water adjustment handle to the lowest lowering position, it indicates that the user wants the desired outlet flow to be zero (the faucet is turned off). When the user lifts the water adjusting handle to enable the water adjusting handle to be located at the highest lifting position, the ideal water outlet flow rate desired by the user is the maximum water outlet flow rate. When the user adjusts the water adjusting handle to a selected position between the lowest lowering position and the highest lifting position, the ideal water outlet flow rate desired by the user is between zero and the maximum water outlet flow rate, and the higher the selected position is, the higher the ideal water outlet flow rate desired by the user is. When the user lifts the water adjusting handle and rotates the water adjusting handle to the left position, the ideal outlet water temperature desired by the user is low. When the user lifts the water adjusting handle and rotates the water adjusting handle to the right position, the ideal outlet water temperature which is wanted by the user is high.

Therefore, the water transfer switch is similar to the traditional mechanical water transfer switch in the aspects of control mode and control effect, and more accords with the traditional use habit of people.

< example five >

Fig. 29 to 32 show a fifth embodiment of the waterway system of the present application, which has a structure similar to that of the fourth embodiment, and can be understood by referring to the description of the fourth embodiment, with the main differences that: the water return valve in this embodiment is a commercially available electromagnetic valve.

< example six: water supply method

The embodiment provides a water outlet method of a waterway system, and the method can be applied to the waterway system of any one of the embodiments. For those skilled in the art, as long as the waterway system includes the cold water channel 1, the hot water channel 2, the mixed water channel 3 respectively communicated with the cold water channel 1 and the hot water channel 2, and the return water channel communicated with the hot water channel, the structural basis for implementing the water outlet method of the present embodiment is provided.

Referring to fig. 33, the water discharging method of the present embodiment includes:

s101, acquiring a target water temperature of the mixed water flow passage 3 and a current first water temperature of the hot water flow passage 2.

For example, in any of the first to fifth embodiments, the waterway system receives an operation applied to the water temperature setting element 8, determines the target water temperature of the mixed water flow passage 3 according to the operation, and acquires the current first water temperature of the hot water flow passage 2 from the first water temperature sensor 11. In other embodiments, the user sets the target temperature of the mixing flow channel 3 through an application installed in the mobile terminal.

In some embodiments, the target water temperature of the mixing water flow passage 3 and the current first water temperature of the hot water flow passage 2 may be obtained periodically within a preset time or in response to a user operation, and once the target water temperature and the first water temperature satisfy the following respective conditions, the waterway system performs various corresponding actions as described below.

In some embodiments, the waterway system is further configured with a water supply switch, and when a user turns on the water supply switch, the waterway system obtains the target water temperature of the mixed water flow passage 3 from the water temperature setting element 8 and obtains the current first water temperature of the hot water flow passage 2 from the first water temperature sensor 11 in response to the turning on operation. It is understood that the flow setting element 9 is a special water supply switch with a flow setting function, and when the user operates the flow setting element 9 to set a non-zero flow, the water supply switch is turned on to indicate that water supply is required, and the water channel system obtains the target water temperature of the mixed water channel 3 from the water temperature setting element 8 and obtains the current first water temperature of the hot water channel 2 from the first water temperature sensor 11. In general, before the water supply switch is turned on, a user operates the water temperature setting element 8 to set a target water temperature of the water mixing flow passage, and then turns on the water supply switch; if the user does not perform the operation of setting the water temperature on the water temperature setting element 8 before turning on the water supply switch, the waterway system may acquire the previously set water temperature from the water temperature setting element 8 as the target water temperature.

And S102, in response to the fact that the first water temperature is smaller than the target water temperature, controlling the cold water flow channel 1 and the hot water flow channel 2 to be separated from the mixed water flow channel 3, and controlling the hot water flow channel 2 to supply water to the water return flow channel 4.

It can be understood that when the first water temperature is less than the target water temperature, it indicates that the ideal water temperature of the mixing water channel 3 and the ideal outlet water temperature of the water use terminal 22 are higher than the current actual water temperature of the hot water channel 2, and even if the cold water channel 1 is closed and only the water of the hot water channel 2 is supplied to the mixing water channel 3 and the water use terminal 22, the requirement of the user on the water temperature cannot be met. Therefore, the hot water channel 2 can be controlled to send water to the water return channel 4, so that the cooling water lost in the hot water channel 2 can be quickly led out, the hot water without losing temperature at the upstream can be quickly supplemented to the hot water channel 2, particularly the water outlet end of the hot water channel 2, the water temperature of the hot water channel 2 can be quickly raised in a short time, and the outlet water temperature of the water using terminal 22 can be close to the ideal temperature.

In other embodiments, the water supply method further comprises:

acquiring a current second water temperature of the cold water flow channel 1;

for example, in the first embodiment, the second water temperature sensor 12 can be used to obtain the current second water temperature of the cold water channel 1.

And in response to the first water temperature being larger than the target water temperature and the second water temperature being smaller than the target water temperature, the return water flow channel 4 is controlled to be separated from the hot water flow channel 2, the hot water flow channel 2 is controlled to supply water to the mixed water flow channel 3 at a first flow rate, and the cold water flow channel 1 is controlled to supply water to the mixed water flow channel 3 at a second flow rate, wherein the first flow rate and the second flow rate are determined according to the first water temperature, the second water temperature and the target water temperature. Specifically, the ratio of the first flow rate to the second flow rate is equal to the ratio of the second temperature difference to the first temperature difference, wherein the first temperature difference is the temperature difference between the first water temperature and the target water temperature, and the second temperature difference is the temperature difference between the target water temperature and the second water temperature. The aim of this strategy is also to make the water temperature of the mixing channel 3 equal (including substantially equal) to the target water temperature.

In still other embodiments, in response to the first water temperature being equal to the target water temperature, the return water flow passage 4 is controlled to be blocked from the hot water flow passage 2, the cold water flow passage 1 is controlled to be blocked from the mixed water flow passage 3, and the hot water flow passage 2 is controlled to supply water to the mixed water flow passage 3.

In practical applications, the user usually has a corresponding demand for the water outlet flow of the water use terminal 22, for example, the user wants to obtain a small water outlet flow when making tea, and a large water outlet flow when washing dishes. Thus, in other embodiments, the water supply method further comprises: and obtaining the target flow of the mixed water flow passage 3. Further, the first flow and the second flow in S102 are less than or equal to the target flow, and the third flow is less than or equal to the target flow.

Under such a water supply strategy, the target flow rate of the mixed water flow channel 3 is also used as one of the parameters for determining the water flow rates of the cold water flow channel and the hot water flow channel, specifically, the sum of the water flow rates of the cold water flow channel 1 and the hot water flow channel 2 is controlled to be not greater than the target flow rate, so that the problem of poor use experience caused by the fact that the actual water supply flow rates of the cold water flow channel and the hot water flow channel to the mixed water flow channel 3 exceed the required flow rates is solved, for example: splash splashes when milk is infused.

There are various ways of obtaining the target flow rate of the mixed water flow passage 3, for example, in any of the first to fifth embodiments, the controller 10 may determine the target flow rate according to the operation information applied to the flow rate setting element 9. In other embodiments, the user sets the target flow channel on an application of the mobile terminal.

In other embodiments, "in response to the first water temperature < the target water temperature, the cold water flow passage 1 and the hot water flow passage 2 are both blocked from the mixed water flow passage 3, and the hot water flow passage 2 is controlled to supply water to the return water flow passage 3" is further optimized to include: and in response to the fact that the first water temperature is smaller than the target water temperature and the temperature difference between the target water temperature and the first water temperature is larger than a preset temperature difference threshold value, the cold water flow channel 1 and the hot water flow channel 2 are controlled to be separated from the mixed water flow channel 3, and the hot water flow channel 2 is controlled to send water to the water return flow channel 3. That is, before the cold water flow channel 1 and the hot water flow channel 2 are both controlled to be isolated from the mixed water flow channel 3 and the hot water flow channel 2 is controlled to supply water to the return water flow channel 3 in S102, "it is further determined whether the temperature difference between the target water temperature and the first water temperature is greater than a preset temperature difference threshold value, and only when it is determined that the temperature difference between the target water temperature and the first water temperature is greater than the preset temperature difference threshold value, the cold water flow channel 1 and the hot water flow channel 2 are both controlled to be isolated from the mixed water flow channel 3 and the hot water flow channel 3 is controlled to supply water to the return water flow channel 3.

It can be understood that the larger the temperature difference between the target water temperature and the first water temperature is, the more urgent the need for sending out the cooling water in the hot water flow passage 2 is, and therefore, the water return is performed when the temperature difference between the target water temperature and the first water temperature is determined to be greater than the preset temperature difference threshold.

In another embodiment, in response to the first water temperature being less than the target water temperature and the temperature difference between the target water temperature and the first water temperature being less than the temperature difference threshold, the hot water flow passage 2 is controlled to be blocked from the return water flow passage 3, the cold water flow passage 1 is controlled to be blocked from the mixing water flow passage 3, and the hot water flow passage 2 is controlled to directly supply water to the mixing water flow passage 3.

The temperature difference between the target water temperature and the first water temperature is smaller than a set temperature difference threshold value, which indicates that the current water temperature of the hot water flow passage is very close to the target water temperature, and the hot water flow passage 2 directly supplies water to the mixed water flow passage 3 for pursuing water using speed.

In one embodiment, for example, in the third embodiment, in response to the first water temperature being less than the target water temperature and the temperature difference between the target water temperature and the first water temperature being less than the temperature difference threshold, the hot water flow passage 2 is controlled to be blocked from the return water flow passage 3, the cold water flow passage 1 is controlled to be blocked from the mixing water flow passage 3, the electric heater 5 is used to heat the hot water flow passage 2 to raise the temperature thereof to the target water temperature, and the hot water flow passage 2 is controlled to supply water to the mixing water flow passage 3.

In some embodiments, the waterway system is provided with not only the return water flow passage 4 but also a hot water tank communicating with the hot water flow passage 2 to provide a source of hot water to the hot water flow passage 2. In these embodiments, the water supply method thereof may further include: and acquiring the current third water temperature of the hot water tank. Further, in S102, "in response to that the first water temperature is less than the target water temperature, the cold water flow channel and the hot water flow channel are both controlled to be separated from the water mixing flow channel, and the hot water flow channel is controlled to supply water to the water return flow channel", which may be further optimized to include: and in response to the first water temperature being less than the target water temperature and the target water temperature being less than or equal to the third water temperature, controlling the cold water flow channel and the hot water flow channel to be separated from the water mixing flow channel, and controlling the hot water flow channel to supply water to the water return flow channel. That is, the cold water flow channel 1 and the hot water flow channel 2 are both controlled to be isolated from the water mixing flow channel 3, before the hot water flow channel 2 is controlled to supply water to the water returning flow channel 4, whether the target water temperature is less than or equal to the third water temperature needs to be judged, and only when the target water temperature is determined to be less than or equal to the third water temperature, the follow-up action is executed, namely, the cold water flow channel and the hot water flow channel are both controlled to be isolated from the water mixing flow channel, and the hot water flow channel is controlled to supply water to the water returning flow channel.

In the description of the present specification and claims, the term "backwater" should be understood as: it includes any reasonable situation of leading the water of the hot water flow passage 2 to other than the mixed water flow passage 3, such as leading the water in the hot water flow passage 2 to a drain, and the "backwater" is not limited to a hot water supply source, such as the above-described hot water tank, that leads the water of the hot water flow passage 2 back to the hot water flow passage 2.

Claims

1. A waterway system, comprising:

a cold water flow passage is arranged on the water tank,

a hot water flow passage, and

characterized in that, the waterway system further comprises:

2. The waterway system of claim 1, further comprising:

3. The waterway system of claim 2, further comprising:

4. The waterway system of claim 1, further comprising:

a first component, and

5. The waterway system of claim 4,

the mixed water flow channel comprises a first mixed water flow channel section and a second mixed water flow channel section, the first mixed water flow channel is provided with an eighth flow channel opening and a ninth flow channel opening positioned on the surface of the first component, and the second mixed water flow channel section is provided with a tenth flow channel opening positioned on the surface of the first component;

6. The waterway system of claim 4,

the third orifice of the first water mixing hole on the first surface and the first notch of the first water mixing groove on the second surface are both arranged on the first pivot axis, and 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 and the first notch are all arranged on the same cylindrical surface;

the arc of the first slot on the cylindrical surface is equal to the arc of the first aperture on the cylindrical surface, and the arc of the second sector is less than 180 °.