CN215864080U - Waterway assembly and water using system - Google Patents

Abstract

The application relates to a waterway assembly, comprising: the water mixing device comprises a first plate, a second plate, a cold water flow channel, a hot water flow channel and a mixed water flow channel, wherein the first plate and the second plate are fixedly stacked, and the cold water flow channel, the hot water flow channel and the mixed water flow channel are formed between the first plate and the second plate; the cold water flow channel, the hot water flow channel and the mixed water flow channel are respectively provided with a cold water inlet, a hot water inlet and a mixed water outlet which are positioned between the outer edge of the first plate and the outer edge of the second plate. The water route subassembly simple structure, integrated level of this application are high, the production preparation of being convenient for, the time and the work load of reducible on-the-spot installation moreover.

Description

Waterway assembly and water using system

Technical Field

The application relates to a water route subassembly and water system.

Background

A waterway assembly for guiding water flow trend in the prior art is mostly a plurality of water pipes which are mutually butted and combined, and has the defects of complex manufacturing process, high production cost, need of installation and the like.

Disclosure of Invention

The technical problem that this application was solved is: the waterway assembly and the water using system are simple in structure, high in integration level, convenient to produce and manufacture and capable of reducing the time and workload of field installation.

The technical scheme of the application is as follows:

in a first aspect, the present application provides a waterway assembly, comprising:

first and second plates fixed in a stack, and

a cold water flow passage, a hot water flow passage and a mixed water flow passage formed between the first plate and the second plate;

the cold water flow channel, the hot water flow channel and the mixed water flow channel are respectively provided with a cold water inlet, a hot water inlet and a mixed water outlet which are positioned between the outer edge of the first plate and the outer edge of the second plate.

In an optional design, the first plate and the second plate are both made of stamped metal plates, a first groove is stamped in a first surface of the first plate facing the second plate, a second groove corresponding to the first groove is stamped in a second surface of the second plate facing the first plate, and the first groove and the second groove form the cold water flow passage, the hot water flow passage and the mixed water flow passage.

In an optional design, a first water temperature sensor mounting hole communicated with the hot water flow passage is arranged on the first plate in a penetrating way.

In an alternative design, there is provided between the outer edge of the first plate and the outer edge of the second plate:

a first flow regulating valve mounting port leading to between the cold water flow passage and the mixed water flow passage, an

The second flow passage adjusting valve mounting opening is communicated between the hot water flow passage and the mixed water flow passage;

wherein the first flow control valve mounting port and the second flow control valve mounting port are both formed by the first channel and the second channel.

In an optional design, the waterway assembly further includes a water return channel located between the first plate and the second plate and formed by the first channel and the second channel, the water return channel is communicated with the hot water channel, and the water return channel has a water return outlet located between an outer edge of the first plate and an outer edge of the second plate.

In an optional design, a water return valve mounting port leading to a position between the hot water flow channel and the water return flow channel is further arranged between the outer edge of the first plate and the outer edge of the second plate, and the water return valve mounting port is formed by the first channel and the second channel.

In a second aspect, the present application provides a water use system comprising:

the waterway assembly of the first aspect;

the water return valve is arranged in the water return valve mounting opening and used for connecting or disconnecting the communication between the water return flow passage and the hot water flow passage;

the first water temperature sensor is arranged in the first water temperature sensor mounting hole and used for acquiring the current first water temperature of the hot water flow channel;

the first electric heater is of an annular water passing structure and is fixedly inserted into the hot water flow channel so as to heat the hot water flow channel;

the water temperature setting element is used for setting the target water temperature of the water mixing flow channel;

a controller in communication with the water return valve, the first water temperature sensor, the first electric heater, and the water temperature setting element, respectively, for: the method includes the steps of obtaining a target water temperature of the mixed water flow passage from the water temperature setting element, obtaining a first water temperature of the hot water flow passage from the first water temperature sensor, controlling a working state of the first electric heater based on the target water temperature and the first water temperature, and controlling a working state of the water return valve.

The water path assembly, the water return valve, the first water temperature sensor, the first electric heater and the controller are fixedly accommodated in the shell, and the water temperature setting element is arranged on the outer surface of the shell;

in an optional design, the road system further comprises:

a first flow regulating valve disposed in the first flow regulating valve mounting port;

the second flow regulating valve is arranged in the second flow regulating valve mounting opening;

wherein the first flow regulating valve and the second flow regulating valve are both fixedly accommodated in the housing, and the first flow regulating valve and the second flow regulating valve are both in communication connection with the controller, and the controller is further configured to: controlling the operating states of the first flow rate adjustment valve and the second flow rate adjustment valve based on the target water temperature and the first water temperature.

In an optional design, the water system further includes a flow setting element for setting a target flow rate of the mixing flow channel, the flow setting element is disposed on an outer surface of the housing and is in communication with the controller, and the controller is configured to: the target flow rate of the mixed water flow channel is obtained from the flow rate setting element, and the working states of the first electric heater, the water return valve, the first flow regulating valve and the second flow regulating valve are controlled based on the target water temperature, the first water temperature and the target flow rate.

In an alternative design, the water usage system further comprises:

a cold water joint, a part of which is accommodated in the shell and communicated with the cold water inlet, and the other part of which extends out of the shell and is provided with a connecting thread;

a hot water joint, one part of which is accommodated in the shell and communicated with the hot water inlet, and the other part of which extends out of the shell and is provided with a connecting thread;

a part of the water mixing joint is accommodated in the shell and is communicated with the water mixing outlet, and the other part of the water mixing joint extends out of the shell and is provided with a connecting thread;

and one part of the water return joint is accommodated in the shell and communicated with the water return outlet, and the other part of the water return joint extends out of the shell and is provided with a connecting thread.

The application has at least the following beneficial effects:

each runner in this application water route subassembly is formed between range upon range of fixed first board and second board to set up the inlet outlet between two board outer fringe limits, simple structure, integrated level are high, the production preparation of being convenient for, the time and the work load of reducible on-the-spot installation moreover.

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 perspective view of a waterway assembly according to a first embodiment of the present application.

Fig. 2 is an exploded view of the water circuit assembly of fig. 1.

FIG. 3 is a general schematic diagram of a dual-purpose water system according to an embodiment of the present application.

Fig. 4 is a partial schematic view of the water system of fig. 3.

Fig. 5 is a schematic view of the internal structure of fig. 4.

Description of reference numerals:

100-a first plate, 200-a second plate;

100 a-a first channel, 100 b-a first water temperature sensor mounting hole, 100 c-a second water temperature sensor mounting hole, 100 d-a third water temperature sensor mounting hole;

200 a-a second channel;

1-a cold water flow channel, 2-a hot water flow channel, 3-a mixed water flow channel, 4-a backwater flow channel, 5-a first water temperature sensor, 6-a second water temperature sensor, 7-a third water temperature sensor, 8-a water temperature setting element, 9-a flow setting element, 10-a backwater valve, 11-a first flow regulating valve, 12-a second flow regulating valve, 13-a controller, 14-a cold water joint, 15-a hot water joint, 16-a mixed water joint, 17-a backwater joint, 18-a water using terminal, 19-a backwater valve mounting port, 20-a first flow regulating valve mounting port, 21-a second flow regulating valve mounting port, 22-a shell and 23-a basin;

1 a-cold water inlet, 2 a-hot water inlet, 3 a-mixed water outlet and 4 a-backwater outlet.

Detailed Description

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

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

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

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

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

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

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

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

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

< example one: waterway component

FIG. 1 illustrates one embodiment of a waterway assembly of the present application. The water channel assembly in fig. 1 comprises: the first and second plates 100 and 200 are fixedly stacked, and a cold water flow passage 1, a hot water flow passage 2, and a mixed water flow passage 3 are formed between the first and second plates 100 and 200. The water mixing flow channel 3 is respectively communicated with the cold water flow channel 1 and the hot water flow channel 2, and the cold water flow channel 1, the hot water flow channel 2 and the water mixing flow channel 3 are respectively provided with a cold water inlet 1a, a hot water inlet 2a and a water mixing outlet 3a which are positioned between the outer edge of the first plate 100 and the outer edge of the second plate 200.

Specifically, referring to fig. 2, the first plate 100 and the second plate 200 are both made of stamped metal. The first plate 100 has a first surface facing the second plate 200, and the second plate 200 has a second surface facing the first plate 100. The aforementioned first surface of the first plate 100 is punched with first slots 100a, and the aforementioned second surface of the second plate 200 is punched with second slots 200a corresponding to the first slots 100 a. The first and second channels 100a and 200a cooperate with each other to form the cold water flow passage 1, the hot water flow passage 2, and the mixed water flow passage 3 described above.

In practical applications, the cold water introduced into the cold water flow passage 1 from the cold water inlet 1a and the hot water introduced into the hot water flow passage 2 from the hot water inlet 2a converge in the mixed water flow passage 3 to obtain warm water at a desired temperature.

In the present embodiment, the first plate 100 has disposed therethrough: a first water temperature sensor mounting hole 100b communicated with the hot water flow passage 2, a second water temperature sensor mounting hole 100c communicated with the cold water flow passage 1, and a third water temperature sensor mounting hole 100d communicated with the mixed water flow passage 3, so that in practical application, three water temperature sensors can be respectively mounted in the three mounting holes to respectively acquire the water temperatures of the hot water flow passage 2, the cold water flow passage 1 and the mixed water flow passage 3.

In the present embodiment, between the outer edge of the first plate 100 and the outer edge of the second plate 200, there are disposed: the first flow regulating valve mounting opening 20 which leads to the position between the cold water flow channel 1 and the mixed water flow channel 3 and the second flow regulating valve mounting opening which leads to the position between the hot water flow channel 2 and the mixed water flow channel 3 can be respectively mounted with the first flow regulating valve 11 and the second flow regulating valve in the two mounting openings during actual application, so as to respectively regulate the water feeding flow of the cold water flow channel 1 and the hot water flow channel 2 to the mixed water flow, and further regulate the water temperature and the flow of the mixed water flow channel 3. Also, the aforementioned first flow regulating valve mounting port 20 and second flow regulating valve mounting port are both formed by the aforementioned first channel 100a and second channel 200 a.

In practical applications, the hot water flow passage 2 needs to be communicated with a hot water source (such as a hot water tank) through an external pipeline so as to provide hot water to the hot water source, and the water in the hot water flow passage 2 is often cooled and lost in temperature due to heat dissipation to the environment. In view of this, the waterway assembly of the present embodiment further includes a water return channel 4 disposed between the first plate 100 and the second plate 200, the water return channel 4 is communicated with the hot water channel 2, and the water return channel 4 has a water return outlet 4a disposed between the outer edge of the first plate 100 and the outer edge of the second plate 200. The return water flow passage 4 can lead out the low-temperature water in the hot water flow passage 2 quickly when the temperature of the hot water flow passage 2 is low, so that the hot water which is not lost at the upstream flows in.

Further, a return valve mounting port 19 is provided between the outer edge of the first plate 100 and the outer edge of the second plate 200 to communicate with the hot water flow passage 2 and the return water flow passage 4, and the return valve mounting port 19 is also formed by the first groove 100a and the second groove 200 a. So that the return valve 10 for opening or closing the communication of the return water flow passage 4 with the hot water flow passage 2 can be installed in the return valve installation port 19 in practical use.

< example two: water using system

Fig. 3 shows a water system provided with the waterway assembly of the first embodiment, which is a specific application example of the waterway assembly of the first embodiment.

The water system of this embodiment includes the waterway assembly of the first embodiment, and further includes: the water heater comprises a shell 22, a water return valve 10, a first water temperature sensor 5, a second water temperature sensor 6, a third water temperature sensor 7, a first electric heater, a second electric heater, a water temperature setting element 8, a flow setting element 9, a first flow regulating valve 11, a second flow regulating valve 12, a cold water joint 14, a hot water joint 15, a water mixing joint 16, a water return joint 17, a controller 13 and a water use terminal 18. Wherein:

the water return valve 10 is disposed in a water return valve mounting port 19 of the waterway assembly, and is used for connecting or disconnecting the communication between the water return flow passage 4 and the hot water flow passage 2.

The first water temperature sensor 5 is disposed in the first water temperature sensor mounting hole 100b of the waterway assembly, and is configured to obtain a current first water temperature of the hot water flow passage 2.

The second water temperature sensor 6 is disposed in the second water temperature sensor mounting hole 100c of the waterway assembly, and is configured to obtain a current second water temperature of the cold water flow passage 1.

The third water temperature sensor 7 is disposed in the third water temperature sensor mounting hole 100d of the waterway assembly, and is configured to obtain a current third water temperature of the mixed water flow channel 3.

The first electric heater is of an annular water passing structure and is fixedly inserted into the hot water flow passage 2 to heat the hot water flow passage 2, so that the water temperature of the hot water flow passage 2 rises.

The second electric heater is also of an annular water flowing structure and is fixedly inserted into the water mixing flow channel 3 to heat the water mixing flow channel 3, so that the water temperature of the water mixing flow channel 3 rises. The first electric heater and the second electric heater are omitted from the drawing and are not shown.

Both the water temperature setting element 8 and the flow setting element 9 are provided on a surface of the housing 22, both operable (including manually and acoustically operated). The water temperature setting element 8 is configured to set a target water temperature of the mixed water flow channel 3, and the flow rate setting element 9 is configured to set a target flow rate of the mixed water flow channel 3. 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.

The first flow control valve 11 is disposed in the first flow control valve mounting opening 20 of the waterway assembly, and is configured to regulate a water supply flow rate of the cold water flow channel 1 to the mixed water flow channel 3, that is, a flow rate of the cold water flow channel 1 itself.

The second flow control valve 12 is disposed in a second flow control valve mounting opening 21 of the waterway assembly, and is configured to regulate a water supply flow of the hot water flow channel 2 to the mixed water flow channel 3, that is, a flow of the hot water flow channel 2 itself.

A part of the cold water joint 14 is housed in the housing 22 and communicates with the cold water inlet 1a, and the other part of the cold water joint 14 extends to the outside of the housing 22 and is provided with a first connection screw. The first connection thread of the cold water nipple 14 is used to screw an external cold water supply pipe.

A part of the hot water joint 15 is housed in the case 22 and communicates with the hot water inlet 2a, and the other part of the cold water joint 14 is extended to the outside of the case 22 and provided with a second connection screw. The second connection screw of the hot water joint 15 is used to screw an external hot water supply pipe.

A part of the water mixing joint 16 is accommodated in the housing 22 and is communicated with the water mixing outlet 3a, and the other part of the water mixing joint 16 extends out of the housing 22 and is provided with a third connecting thread. The third connecting thread of the mixing nipple 16 is used for screwing the water use terminal 18.

One part of the water return joint 17 is accommodated in the casing 22 and is communicated with the water return outlet 4a, and the other part of the water return joint 17 extends out of the casing 22 and is provided with a fourth connecting thread. The fourth connecting thread of the return water joint 17 is used for screwing an external return water pipe.

The controller 13 is in communication with the water return valve 10, the first flow rate adjustment valve 11, the second flow rate adjustment valve 12, the first water temperature sensor 5, the second water temperature sensor 6, the third water temperature sensor 7, the first electric heater, the second electric heater, the water temperature setting element 8, and the flow rate setting element 9, respectively. The controller 13 is configured to: the method comprises the steps of obtaining a target water temperature of a mixed water flow channel 3 from a water temperature setting element 8, obtaining a target flow of the mixed water flow channel 3 from a flow setting element 9, obtaining a current first water temperature of a hot water flow channel 2 from a first water temperature sensor 5, obtaining a current second water temperature of a cold water flow channel 1 from a second water temperature sensor 6, obtaining a current third water temperature of the mixed water flow channel 3 from a third water temperature sensor 7, and controlling the working states of a first electric heater, a second electric heater, a water return valve 10, a first flow regulating valve 11 and a second flow regulating valve 12.

The water usage terminal 18 is a tap communicating with the mixing flow channel 3 and having a water outlet. Specifically, the water inlet end of the water faucet is in locking connection with the third connecting thread of the water mixing joint 16 through a threaded sleeve. When the water tap is used, water flowing into the mixed water flow passage 3 from the cold water flow passage 1 and/or the hot water flow passage 2 is sent to the water tap for users to use. In other embodiments, the water terminals 18 are shower heads for bathing.

The embodiment also provides the following control method of the water using system, and the control method comprises the following steps:

in response to the user' S operation of the water temperature setting element 8, the controller 13 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 5S 101.

In another embodiment, the water system is further provided with a water supply switch, and when a user turns on the water supply switch, the controller 13 obtains the target water temperature of the mixing 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 5 in response to the turning on operation. In general, before the water supply switch is turned on, the user operates the water temperature setting element 8 to set the target water temperature of the mixing water flow passage 3, 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 water use system may acquire the previously set water temperature from the water temperature setting element 8 as the target water temperature.

It is understood that the flow setting element 9 in the present embodiment 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 controller 13 obtains the target water temperature of the mixing 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 5.

In another control strategy of the present embodiment,

and S102, if the first water temperature is less than the target water temperature, controlling the first flow regulating valve 11 to separate the cold water flow channel 1 from the mixed water flow channel 3, controlling the first electric heater to heat the hot water flow channel 2 at a first power, and controlling the second flow regulating valve 12 to supply water to the mixed water flow channel 3 at a first flow rate, wherein the first flow rate is determined according to the first power and a first temperature difference, and the first temperature difference is the temperature difference between the target water temperature and the first water temperature.

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 18 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 18, the requirement of the user on the water temperature cannot be met. Therefore, the hot water flow passage 2 is heated to raise the water temperature to the target water temperature.

The first power is the heating power of the first electric heater to the hot water channel 2, and may be a power set by a person, or a power determined by a default of the system or according to related data. For the first electric heater with non-adjustable power, the first power is the inherent power of the first electric heater, and is usually the rated power of the first electric heater, and the maximum power and the minimum power of the first electric heater are the same in this case; for the first electric heater, which may be power adjustable, the first power may be a power selected manually by the user or may be a power determined automatically by the water system in response to relevant data.

The power of the first electric heater, which is used to heat the hot water channel 2, is limited and is usually fixed and non-adjustable. By heating the low first water temperature to the high target water temperature with a power of limited or even non-controllable magnitude, and by ensuring that the hot water flow channel 2 is maintained at the target water temperature to continuously supply water to the mixed water flow channel 3, the flow rate of the hot water flow channel 2 (i.e. the flow rate of the water supplied to the mixed water flow channel 3) needs to be adjusted accordingly. Therefore, in the embodiment, the first flow rate of the hot water flow channel 2 is determined according to the temperature difference (i.e., the first temperature difference) between the target water temperature and the first power, and then the hot water flow channel 2 is controlled to supply water to the hot water flow channel 2 at the determined first flow rate, which is helpful for making the water temperature of the hot water flow channel 2 flowing into the mixed water flow channel 3 equal to the target water temperature and for making the outlet water temperature of the user water terminal 18 close to the ideal outlet water temperature.

It will be understood by those skilled in the art that the first flow rate determined based on the first power and the first temperature difference is a flow rate at which the temperature of the water in the hot water flow passage 2 can be maintained (including substantially maintained) at the target temperature of the water when the first electric heater heats the hot water flow passage 2 at the first power.

In the control method of the water system in this embodiment, the method may further include:

acquiring a current second water temperature of the cold water flow channel 1 from a second water temperature sensor 6;

if the first water temperature is greater than the target water temperature and the second water temperature is less than the target water temperature, the first flow control valve 11 and the second flow control valve 12 are used for keeping the water mixing flow channel 3 communicated with the cold water flow channel 1 and the hot water flow channel 2, the hot water flow channel 2 is not heated, the ratio of the second temperature difference to the third temperature difference is determined as the flow ratio of the cold water flow channel 1 to the hot water flow channel 2, the cold water flow channel 11 and the hot water flow channel 22 are controlled to supply water to the water mixing flow channel 33 according to the determined flow ratio, the second temperature difference is the temperature difference between the first water temperature and the target water temperature, and the third 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;

if the first water temperature is equal to the target water temperature, the cold water flow channel 1 is separated from the mixed water flow channel 3 by the first flow regulating valve 11, only the communication between the mixed water flow channel 3 and the hot water flow channel 2 is kept, the hot water flow channel 2 is not heated, and the hot water flow channel 2 is controlled to directly supply water to the mixed water flow channel 3.

In practice, the user usually has a corresponding demand for the outflow of the water usage terminal 18, for example, the user wants to obtain a small outflow when making tea, and a large outflow when washing dishes.

Therefore, in the method for controlling a water system of the present embodiment, the method may further include:

in response to the user's operation of the flow setting element 9, the controller 13 obtains the target flow rate of the mixing flow channel 3 from the flow setting element 9;

and, the first flow rate in S102 is controlled to be not more than the target flow rate, i.e., the first flow rate is not more than the target flow rate.

Under such a control strategy, the target flow rate of the mixing water channel 3 is also used as one of the parameters for determining the water outlet flow rate of the hot water channel 2. Specifically, the water flow rate of the hot water flow channel 2 is controlled to be not more than the target flow rate, so that the problem of poor use experience caused by the fact that the actual water supply flow rate of the hot water flow channel 2 to the water mixing flow channel 3 exceeds the required flow rate is solved, for example: splash splashes when milk is infused. While this control strategy overcomes the aforementioned problems, there are drawbacks: when the special situation that the target flow is small, the difference between the first water temperature and the target flow is small, and the heating power of the first heater with fixed power is large occurs, the requirements of the water temperature and the flow of the hot water flow passage 2 cannot be met at the same time only by adopting the control strategy. It can be seen that such a control strategy is not applicable to the aforementioned special case. In contrast, when it is determined that the special situation does not occur, the control strategy is adopted, and when the special situation occurs and the first water temperature is lower than the target water temperature, the cold water flow channel 1, the hot water flow channel 2 and the water mixing flow channel 3 are kept communicated, the hot water flow channel 2 is heated by the third power, the first flow rate of the hot water flow channel 2 and the second flow rate of the cold water flow channel 1 are determined according to the first water temperature, the second water temperature, the third power, the target water temperature and the target flow rate, the hot water flow channel 2 and the cold water flow channel 1 are controlled to supply water to the water mixing flow channel 3 at the first flow rate and the second flow rate respectively, wherein the sum of the first flow rate and the second flow rate is smaller than or equal to the target flow rate. This is further explained later.

In another embodiment, the first electric heater of the water system is an electric heater whose power is adjustable so that the hot water flow passage 2 can be heated at a desired power according to a demand, and determines the first power according to the first temperature difference and the target flow rate before controlling the first electric heater to heat the hot water flow passage 2 at the first power S102'. That is, the first power is determined based on the first temperature difference and the target flow rate, and is not arbitrarily set.

It can be understood that, in order to ensure that the water mixing channel 3 can supply water to the water terminal 18 at the target water temperature and at the target flow rate as far as possible, the first power should be higher if the first temperature difference and the target flow rate are higher; if the first temperature difference and the target flow rate are smaller, the first power should be smaller. Based on this, in the embodiment in the previous paragraph, the "first power is determined according to the first temperature difference and the target flow rate", specifically including:

if the product of the first temperature difference and the target flow is larger than a first preset product threshold value, determining the first power as a first preset power value;

if the product of the first temperature difference and the target flow is smaller than a second preset product threshold value, determining the first power as a second preset power value, wherein the second preset product threshold value is smaller than the first preset product threshold value;

and if the second preset product threshold is not more than the product of the first temperature difference and the target flow and is not more than the first preset product threshold, determining the first power as a third preset power value, wherein the first preset power value is more than the third preset power value and more than the second preset power value.

The product of the first temperature difference and the target flow rate is larger, the heating power of the hot water flow channel 2 is larger, the product of the first temperature difference and the target flow rate is smaller, the heating power of the hot water flow channel 2 is smaller, and the water heater aims to meet the requirements of users on the water temperature and the water flow rate at the same time: the actual outlet flow is also made as close as possible to the ideal outlet flow on the premise that the actual outlet temperature is (including "substantially") the ideal outlet temperature.

The first preset power value is usually the maximum power of the first electric heater, that is, when the product of the first temperature difference and the target flow rate is greater than a first preset product threshold, the first electric heater is controlled to operate at full power, and the purpose is to make the actual flow rate of the water mixing flow channel 3 approach the target flow rate as far as possible on the premise of ensuring the temperature of the mixed water.

In the control method of the water system of the present embodiment, in S102, "if the first water temperature is less than the target water temperature, the first flow rate adjustment valve 11 is controlled to block the cold water flow passage 1 from the mixed water flow passage 3, the first electric heater is controlled to heat the hot water flow passage 2 at the first power, and the second flow rate adjustment valve 12 is controlled to supply water to the mixed water flow passage 3 at the first flow rate", which may be further optimized as follows: if the first water temperature is less than the target water temperature and the product of the first temperature difference and the target flow is less than a third preset product threshold, the first flow regulating valve 11 is controlled to separate the cold water flow passage 1 from the mixed water flow passage 3, the first electric heater is controlled to heat the hot water flow passage 2 with first power, and the second flow regulating valve 12 is controlled to supply water to the mixed water flow passage 3 with the first flow. That is, before the cold water flow channel 1 and the mixed water flow channel 3 are controlled to be separated and the hot water flow channel 2 is heated, it is further required to determine whether the product of the first temperature difference and the target flow rate is smaller than a third preset product threshold, only when it is determined that the product of the first temperature difference and the target flow rate is smaller than the third preset product threshold, the cold water flow channel 1 and the mixed water flow channel 3 are controlled to be separated, the first electric heater is controlled to heat the hot water flow channel 2 at the first power, and the hot water flow channel 2 is controlled to supply water to the mixed water flow channel 3 at the first flow rate. Otherwise, even if the first water temperature < the target water temperature is determined, if it cannot be determined that the product of the first temperature difference and the target flow rate < the third preset product threshold, the aforementioned response action described at S102 will not be performed, but such an action may be performed: the cold water flow passage 1 and the hot water flow passage 2 are both controlled to be separated 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 4. Namely, if the first water temperature is less than the target water temperature and the product of the first temperature difference and the target flow rate is greater than a third preset product threshold, the cold water flow passage 1 and the hot water flow passage 2 are both controlled to be separated 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 4.

It can be understood that the larger the product of the first temperature difference and the target flow rate is, the more heating power needs to be consumed to heat and maintain the water temperature of the hot water flow passage 2 at the target water temperature and supply water to the mixing water flow passage 3 at a flow rate as close to the target flow rate as possible. The power of the first electric heater is limited or even fixed, and when the product of the first temperature difference and the target flow rate is greater than a third preset product threshold, if the water temperature of the hot water flow channel 2 is maintained at the target water temperature, the flow rate of the hot water flow channel 2 is inevitably far lower than the target flow rate, which is difficult to meet the requirement of the user on the water flow rate. Therefore, the control method of the water system in this embodiment may further include: and if the first water temperature is less than the target water temperature and the product of the first temperature difference and the target flow is greater than a third preset product threshold, controlling the cold water flow passage 1 and the hot water flow passage 2 to be separated from the mixed water flow passage 3, and controlling the hot water flow passage 2 to send water to the water return flow passage 4. Therefore, the cooling water with lost temperature in the hot water flow passage 2 is led out quickly, the hot water without lost temperature at the upstream is supplemented to the hot water flow passage 2, particularly the water outlet end of the hot water flow passage 2 quickly, the water temperature of the hot water flow passage 2 is increased quickly in a short time, and the water outlet flow of the water terminal 18 is close to the ideal flow as far as possible on the premise that the water outlet temperature of the water terminal 18 is close to the ideal temperature.

The smaller the product of the first temperature difference and the target flow rate is, the smaller the heating power that needs to be consumed to heat and maintain the water temperature of the hot water flow passage 2 at the target water temperature and supply water to the mixed water flow passage 3 at a flow rate as close to the target flow rate as possible. If the first water temperature is less than the target water temperature, and the product of the first temperature difference and the target flow is less than the third preset product threshold, it is indicated that the requirements of the water temperature and the water flow can be at least basically met without consuming large heating power (for example, the upper limit heating power which can be provided by the first electric heater), at this time, the cold water flow passage 1 is controlled to be separated from the mixed water flow passage 3 without returning water, the first electric heater is controlled to heat the hot water flow passage 2 at the first power, and the hot water flow passage 2 is controlled to supply water to the mixed water flow passage 3 at the first flow.

The first electric heater can only heat the hot water flow passage 2 but cannot heat the mixed water flow passage 3. If the temperature of the water mixing flow channel 3 is lower in the initial state, when a user opens the faucet to prepare tea making, the first electric heater can only heat the temperature of the hot water flow channel 2 to the target temperature, and the low-temperature water in the water mixing flow channel 3 flows out from the hot water flow channel 2 by the water heated to the target temperature, so that the use experience of the user is influenced. Therefore, the water using system of the present embodiment is provided with the third water temperature sensor 7 and the second electric heater. In practical applications, the controller 13 may control the second electric heater to heat the low water temperature of the water mixing flow channel 3 to the target water temperature and then close the water mixing flow channel in response to receiving the water use operation of the user, and then control the water outlet of the water use terminal 18. Therefore, before the step S102 of controlling the hot water flow passage 2 to supply water to the mixed water flow passage 3 at the first flow rate, the control method of the water system according to the embodiment may further include:

acquiring a current third water temperature of the mixed water flow channel 3 from a third water temperature sensor 7;

and if the third water temperature is less than the target water temperature, controlling the second electric heater to be closed after a preset time for heating the water mixing flow channel 3 with the second power, wherein the preset time is determined according to a fourth temperature difference, and the fourth temperature difference is the temperature difference between the target water temperature and the third water temperature.

In other embodiments, the water supply method further comprises: and obtaining the target flow of the mixed water flow passage 3. And in S102, "if the first water temperature is less than the target water temperature, the first flow rate adjustment valve 11 is controlled to block the cold water flow path 1 from the mixed water flow path 3, the first electric heater is controlled to heat the hot water flow path 2 at the first power, and the second flow rate adjustment valve 12 is controlled to supply water to the mixed water flow path 3 at the first flow rate" further preferably includes:

if the first water temperature is less than the target water temperature, and

the first flow rate adjusting valve 11 is controlled to separate the cold water flow passage 1 from the mixed water flow passage 3, the maximum power of the first electric heater 5 is determined as the first power, the first electric heater is controlled to heat the hot water flow passage 2 at the determined first power, and the second flow rate adjusting valve 12 is controlled to allow the hot water flow to flowThe channel 2 supplies water to the mixed water channel 3 at a first flow rate; wherein K is a compensation coefficient, P_maxIs the maximum power of the first electric heater, T₀Is the target water temperature, S₀Is a target flow rate, T₁Is the first water temperature.

It is understood that when the

When it is determined that the first electric heater 5 can supply the maximum power P even when the maximum power P is not supplied, the following description is given_maxA hot water heating flow passage 2 for maintaining the water temperature of the hot water flow passage 2 at a target water temperature T₀In the case of (3), the flow path of the mixed water flow path 3 cannot reach the target flow rate S₀. Therefore, at this time, the cold water flow passage 1 and the mixed water flow passage 3 should be separated, so that the cold water flow passage 1 with the lower water temperature does not supply water to the mixed water flow passage 3, and the first electric heater 5 is controlled to supply the maximum power P thereof_maxTo heat the hot water flow passage 2 with relatively high water temperature, so that the flow of the mixed water flow passage 3 is closer to the target flow S₀。

In another embodiment, the heating power of the first electric heater 5 is adjustable and can be adjusted steplessly between the minimum power and the maximum power that it can provide, and "if the first water temperature is less than the target water temperature, the first flow rate adjustment valve 11 is controlled to block the cold water flow passage 1 from the mixing water flow passage 3, the first electric heater is controlled to heat the hot water flow passage 2 at the first power, and the second flow rate adjustment valve 12 is controlled to supply water to the mixing water flow passage 3 at the first flow rate" in S102, which may be further optimized to include:

if the first water temperature is less than the target water temperature, and

and is

The first flow rate control valve 11 is controlled to block the cold water flow passage 1 from the mixed water flow passage 3 to cut off the K.S₀·(T₀-T₁) The first electric heater 5 is controlled to the first power (i.e., K.S.) determined as described above₀·(T₀-T₁) Heats the hot water flow passage 2 and controls the second flow rate adjustment valve 12 to supply water from the hot water flow passage 2 to the mixed water flow passage 3 at a first flow rate, wherein P is_minIs the minimum power of the first electric heater.

It is understood that when the

And is

When the first electric heater 5 is capable of heating the water temperature of the hot water flow passage 2 to the target water temperature T₀And let the hot water flow passage 2 at the target flow S₀Supplying water to the mixing flow passage 3 and supplying the first electric heater 5 with the minimum power P_minThe operation does not cause the water temperature of the hot water channel 2 to rise too high. Therefore, the cold water flow passage 1 and the mixed water flow passage 2 can be separated at this time, and the first electric heater 5 is controlled to have the power value of K.S₀·(T₀-T₁) The heating power of (2) heats the hot water flow passage (2), so that the water temperature of the mixed water flow passage (3) is the target water temperature T₀The flow rate is a target flow rate S₀。

In another embodiment, the heating power of the first electric heater 5, although adjustable, cannot be continuously and steplessly adjusted, but has a step and discontinuous step adjustment, and the water supply method further comprises:

acquiring a target flow of the water mixing flow channel 3 and a current second water temperature of the cold water flow channel 1;

if the first water temperature is less than the target water temperature, and

determining a third power of the first electric heater, determining a second flow rate of the hot water flow passage 2 and a third flow rate of the cold water flow passage 1 according to the third power, the target water temperature, the target flow rate, the first water temperature and the second water temperature, controlling the first electric heater to heat the hot water flow passage at the determined third power, controlling the first flow regulating valve 11 to enable the hot water flow passage to supply water to the mixed water flow passage 3 at the determined second flow rate, and controlling the second flow regulating valve 12 to enable the cold water flow passage to supply water at the determined third flow rateThe flow supplies water to the water mixing flow passage 3;

wherein the aforementioned "determining the third power of the first electric heater" includes:

determining the third power as P_max≥P₃≥K·S₀·(T₀-T₁)；

Wherein the determining the second flow rate of the hot water flow path and the third flow rate of the cold water flow path according to the first power, the target water temperature, the target flow rate, the first water temperature, and the second water temperature includes:

the second flow rate and the third flow rate are calculated by the following relation,

k is a compensation factor, P₃Is a third power, T₀Is the target water temperature, S₀Is a target flow rate, T₁At a first water temperature, T₂At the second water temperature, S₂Is the second flow rate, S₃Is the third flow rate.

It is understood that when the

When, say, the first electric heater 5 is at the maximum power P_mxaxWorking and keeping the flow rate of the hot water flow passage 2 not more than the target flow rate S₀When the temperature of the hot water flow passage 2 is higher than the target water temperature T₀. It can be seen that the first electric heater 5 has the ability to heat the water temperature of the hot water flow passage 2 to the target water temperature T₀And the hot water flow passage 2 is enabled to be equal to or exceed the target flow S₀The flow rate of the water supply pipe supplies water to the mixed water flow passage 3. If the system directly controls the first electric heater 5 to have the maximum power P_maxWorking, opening the cold water flow passage 1 and supplying water to the mixed water flow passage 3, if the maximum power P is reached_mxaxToo large and the target flow rate S₀Smaller, will increase S₂And S₃The possibility of failing to take value. That is, if the first electric heater 5 is simply directly controlled to have the maximum power P_maxWorking, the second flow and the third flow cannot be performedThe determined probability is high (that is, no matter how the first flow regulating valve 11 and the first flow regulating valve 11 are adjusted, the requirements of the water temperature and the flow of the mixed water flow passage cannot be met at the same time), and the applicable scene is limited. In this regard, the "determining the third power of the first electric heater" described above is further optimized to include:

s100, making i equal to 1;

s200, judging

Whether or not S is greater than or equal to₀(ii) a Wherein, i is 1, 2, 3 … n, P_i ⁰Is the ith preset power (the preset power corresponds to the gear power of the first electric heater, and n selectable gears) of the preset first electric heater 5, P₁ ⁰＝P_min，P_n ⁰＝P_maxAnd the ith preset power is less than the ith +1 preset power;

s300, if yes, judging

Greater than or equal to S₀Then P will be_i ⁰Determining as a third power;

if it is determined that

Less than S₀Then, the following step S400 is executed;

s400, let i equal i +1, and repeat steps S200 and S300.

It can be understood that through the control strategy, the system can automatically select the gear power which is as small as possible and can meet the target water temperature and target flow requirement of the water mixing flow channel 3 to heat the water flow channel 2, so that the S is reduced₂And S₃The possibility of unable value taking enlarges the application scene.

It is to be understood that, in the step S3, it is determined that

Is equal to S₀The current P is_i ⁰After determining the third power, the calculated third flow rate should be zero.

The control strategy aims to heat the water temperature of the water mixing flow channel 3 to the required temperature, and the fourth temperature difference is the temperature difference between the target water temperature and the third water temperature.

Claims (10)

1. A waterway assembly, comprising:

first and second plates fixed in a stack, and

a cold water flow passage, a hot water flow passage and a mixed water flow passage formed between the first plate and the second plate;

the cold water flow channel, the hot water flow channel and the mixed water flow channel are respectively provided with a cold water inlet, a hot water inlet and a mixed water outlet which are positioned between the outer edge of the first plate and the outer edge of the second plate.

2. The waterway assembly of claim 1, wherein the first plate and the second plate are both stamped sheet metal, a first surface of the first plate facing the second plate is stamped with a first channel, a second surface of the second plate facing the first plate is stamped with a second channel corresponding to the first channel, and the first channel and the second channel form the cold water channel, the hot water channel, and the mixed water channel.

3. The waterway assembly of claim 2, wherein a first water temperature sensor mounting hole is formed through the first plate and communicates with the hot water passageway.

4. The waterway assembly of claim 3, wherein an outer rim of the first plate and an outer rim of the second plate have disposed therebetween:

a first flow regulating valve mounting port leading to between the cold water flow passage and the mixed water flow passage, an

The second flow passage adjusting valve mounting opening is communicated between the hot water flow passage and the mixed water flow passage;

wherein the first flow control valve mounting port and the second flow control valve mounting port are both formed by the first channel and the second channel.

5. The waterway assembly of claim 2, 3, or 4, further comprising a water return channel between the first and second plates and formed by the first and second channels, the water return channel being in communication with the hot water channel, the water return channel having a water return outlet between an outer edge of the first plate and an outer edge of the second plate.

6. The waterway assembly of claim 5, wherein a return valve mounting port is further disposed between the outer edges of the first and second plates to the hot water channel and the return water channel, the return valve mounting port being formed by the first and second channels.

7. A water use system, comprising:

the waterway assembly of claim 6;

the water return valve is arranged in the water return valve mounting opening and used for connecting or disconnecting the communication between the water return flow passage and the hot water flow passage;

the first water temperature sensor is arranged in the first water temperature sensor mounting hole and used for acquiring the current first water temperature of the hot water flow channel;

the first electric heater is of an annular water passing structure and is fixedly inserted into the hot water flow channel so as to heat the hot water flow channel;

the water temperature setting element is used for setting the target water temperature of the water mixing flow channel;

a controller in communication with the water return valve, the first water temperature sensor, the first electric heater, and the water temperature setting element, respectively, for: the method includes the steps of obtaining a target water temperature of the mixed water flow passage from the water temperature setting element, obtaining a first water temperature of the hot water flow passage from the first water temperature sensor, controlling a working state of the first electric heater based on the target water temperature and the first water temperature, and controlling a working state of the water return valve.

The water path assembly, the water return valve, the first water temperature sensor, the first electric heater and the controller are fixedly accommodated in the shell, and the water temperature setting element is arranged on the outer surface of the shell;

8. the water system of claim 7, when claim 5 is appended to claim 4, wherein the road system further comprises:

a first flow regulating valve disposed in the first flow regulating valve mounting port;

the second flow regulating valve is arranged in the second flow regulating valve mounting opening;

wherein the first flow regulating valve and the second flow regulating valve are both fixedly accommodated in the housing, and the first flow regulating valve and the second flow regulating valve are both in communication connection with the controller, and the controller is further configured to: controlling the operating states of the first flow rate adjustment valve and the second flow rate adjustment valve based on the target water temperature and the first water temperature.

9. The water system of claim 8, further comprising a flow setting element for setting a target flow rate of the mixing flow path, the flow setting element being disposed on an outer surface of the housing and communicatively coupled to the controller, the controller being configured to: the target flow rate of the mixed water flow channel is obtained from the flow rate setting element, and the working states of the first electric heater, the water return valve, the first flow regulating valve and the second flow regulating valve are controlled based on the target water temperature, the first water temperature and the target flow rate.

10. The water system of claim 7, further comprising:

a cold water joint, a part of which is accommodated in the shell and communicated with the cold water inlet, and the other part of which extends out of the shell and is provided with a connecting thread;

a hot water joint, one part of which is accommodated in the shell and communicated with the hot water inlet, and the other part of which extends out of the shell and is provided with a connecting thread;

a part of the water mixing joint is accommodated in the shell and is communicated with the water mixing outlet, and the other part of the water mixing joint extends out of the shell and is provided with a connecting thread;

and one part of the water return joint is accommodated in the shell and communicated with the water return outlet, and the other part of the water return joint extends out of the shell and is provided with a connecting thread.

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