CN117213053A - Double-liner electric water heater and control method thereof - Google Patents

Abstract

The invention discloses a double-liner electric water heater and a control method thereof, wherein the double-liner electric water heater comprises: a housing forming an installation space; the sealing heads of the two inner containers are provided with flanges; the water inlet pipe extends into one of the inner containers; the water outlet pipe extends into the other liner; the connecting water pipe is arranged between the two inner containers; an electric heating member having a first electric heating element and a second electric heating element; wherein each inner container is provided with an electric heating component, the electric heating components are arranged on the flange, and the first electric heating component and the second electric heating component extend into the inner containers; the first electric heating element is arranged along the axial direction of the inner container and is close to the flange, and the second electric heating element is attached to the circumferential wall of the inner container. The invention ensures excellent heating performance during vertical or horizontal installation; the water use requirements under various scenes are realized, and the waste of energy sources is avoided.

Description

Double-liner electric water heater and control method thereof

Technical Field

The invention belongs to the technical field of household appliances, and particularly relates to a double-liner electric water heater and a control method thereof.

Background

At present, the water heater is a household appliance commonly used in daily life of people, the electric water heater can be divided into a water storage type electric water heater and an instant electric water heater according to the heating power, and the water storage type electric water heater is provided with a water tank, so that the water storage type electric water heater has the characteristics of large water yield, stable water temperature and the like, and is purchased and used by more families.

In the prior art, the vertical-horizontal type universal water heater mainly takes a vertical type as a main part and takes a horizontal type as an auxiliary selling mode, and only one mounting mode performance can be ensured due to product limitation and hot water flow, and the other mounting mode is greatly discounted; and cannot meet various water demands.

In view of this, it is a technical problem to be solved by the present invention how to design a technology for securing heating performance and satisfying both of vertical and horizontal type water heaters to improve versatility thereof.

Disclosure of Invention

The invention provides a double-liner electric water heater and a control method thereof, which realize that two mounting modes of vertical mounting and horizontal mounting have excellent heating performance.

In order to achieve the technical purpose, the invention is realized by adopting the following technical scheme:

in one aspect, the present invention provides a dual-liner electric water heater comprising:

a housing forming an installation space;

the sealing heads of the two inner containers are provided with flanges;

the water inlet pipe extends into one of the inner containers;

the water outlet pipe extends into the other inner container;

the connecting water pipe is arranged between the two inner containers;

an electric heating member having a first electric heating element and a second electric heating element;

Wherein each inner container is provided with the electric heating component, the electric heating components are arranged on the flange, and the first electric heating piece and the second electric heating piece extend into the inner container; the first electric heating element is arranged along the axial direction of the inner container and is close to the flange, and the second electric heating element is attached to the circumferential wall of the inner container;

in addition, the two inner containers are connected together and located in the shell, and the water inlet pipe and the water outlet pipe extend out of the shell.

In one embodiment of the application, the first electric heating element is arranged on one side of the flange in a roundabout manner.

In an embodiment of the application, the second electric heating element includes a fixing portion, a bending portion and an extension portion which are sequentially connected, the fixing portion and the first electric heating element are arranged side by side, the bending portion extends towards the side wall direction of the inner container, and the extension portion extends along the axial direction of the inner container and is close to the circumferential wall of the inner container.

In an embodiment of the present application, an inlet of the water outlet pipe and an inlet of the water connection pipe are respectively close to the same side circumferential wall of the corresponding liner.

In an embodiment of the application, the second electric heating element in the inner container provided with the water outlet pipe is close to the circumferential wall of the inner container and is far away from the inlet of the water outlet pipe in the radial direction of the inner container, and the second electric heating element in the inner container provided with the water inlet pipe is close to the circumferential wall of the inner container and is far away from the inlet of the connecting water pipe in the radial direction of the inner container.

In an embodiment of the application, the outlet of the water inlet pipe is located inside the inner container and is close to the circumferential wall on the same side of the inner container as the corresponding second electric heating element.

In an embodiment of the application, the outlet of the water connection pipe is positioned in the inner container provided with the water outlet pipe and is close to the circumferential wall of the same side of the inner container with the corresponding second electric heating element.

In an embodiment of the application, the electric heating device further comprises a controller, wherein the controller is used for controlling the electric heating component to be powered on and powered off.

In an embodiment of the present application, each inner container is configured with a temperature controller and a gear switch, the temperature controller and the gear switch are connected in series, the gear switch selectively conducts the first electric heating element and/or the second electric heating element in the corresponding inner container, and the controller is electrically connected with the temperature controller and the gear switch respectively.

The application also provides a control method of the double-liner electric water heater, which is used for controlling the first electric heating element and/or the second electric heating element in the corresponding liner to be electrified according to the installation posture of the double-liner electric water heater.

In an embodiment of the present application, the control method specifically includes: and controlling the first electric heating element and/or the second electric heating element in the corresponding inner container to electrify and run according to the target water consumption and the installation mode of the double-container electric water heater.

In an embodiment of the application, the first electric heating element in the liner provided with the water inlet pipe is a first heating pipe, the second electric heating element is a second heating pipe, the first electric heating element in the liner provided with the water outlet pipe is a third heating pipe, and the second electric heating element is a fourth heating pipe;

the double-liner electric water heater is divided into vertical installation and horizontal installation, and the target water consumption comprises L1 volume, L2 volume, L3 volume and L4 volume, wherein L1 is less than L2 is less than L3 is less than L4.

In one embodiment of the application, under the condition of vertical installation at the double-liner electric water heater;

when the target water consumption is L1 volume, the fourth heating pipe is electrified for heating;

when the target water consumption is L2 volume, the third heating pipe is electrified and heated, and the fourth heating pipe is selectively electrified and heated;

when the target water consumption is L3 volume, the second heating pipe and the third heating pipe are simultaneously electrified and heated, and the fourth heating pipe is selectively electrified and heated;

and when the target water consumption is L4 volume, the first heating pipe and the third heating pipe are simultaneously electrified and heated, and the second heating pipe and/or the fourth heating pipe are/is selectively electrified and heated.

In one embodiment of the application, under the condition of horizontal installation at the double-liner electric water heater;

When the target water consumption is L1 volume, the third heating pipe is electrified and heated;

when the target water consumption is L2 volume, the fourth heating pipe is electrified and heated, and the third heating pipe is selectively electrified and heated;

when the target water consumption is L3 volume, the first heating pipe and the fourth heating pipe are simultaneously electrified and heated, and the third heating pipe is selectively electrified and heated;

and when the target water consumption is L4 volume, the second heating pipe and the fourth heating pipe are simultaneously electrified and heated, and the first heating pipe and/or the third heating pipe are/is selectively electrified and heated.

The invention provides a double-liner electric water heater, which is characterized in that two heating components are arranged in a first liner and a second liner respectively: a first electric heating element and a second electric heating element; the first electric heating element or the second electric heating element is controlled to heat according to different installation modes of the water heater, so that excellent heating performance during vertical installation or horizontal installation is ensured; meanwhile, products are unified and standardized, and convenience in installation of users is improved.

Meanwhile, through different control modes of each heating component, the water consumption requirements of users in various scenes are realized, and the waste of energy sources is avoided.

In addition, the second connecting pipe provided by the invention can ensure that the inflow water can be slowly discharged from the lower end as much as possible by compressing the upper space, so that the phenomenon that the pressure cold water is basically discharged from the top end of the inflow pipe and the cold water and the hot water are mixed in the liner is avoided, and a large amount of invalid hot water is generated.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

Fig. 1 is a schematic diagram of a first embodiment omitting a sidewall of a liner;

fig. 2 is a schematic diagram of a second embodiment omitting the sidewall of the liner;

fig. 3 is a schematic diagram of a third embodiment omitting the sidewall of the liner;

fig. 4 is a schematic diagram of a structure omitting a sidewall of the liner according to the first embodiment;

FIG. 5 is a schematic view of the structure of the liner in the upright mounting state according to the first embodiment;

FIG. 6 is a schematic view of a liner in a horizontal installation state according to the first embodiment;

FIG. 7 is a schematic circuit diagram of a second embodiment;

FIG. 8 is a schematic structural view of the main pipe;

fig. 9 is a schematic view of the piping structure;

FIG. 10 is a schematic view of the structure of the second water inlet pipe;

fig. 11 is a schematic cross-sectional view of the second water inlet pipe.

Reference numerals illustrate:

a first liner 100;

a first heating pipe 110; a second heating pipe 120; a first flange 130;

a second liner 200;

a third heating pipe 210; a fourth heating pipe 220; a second flange 230;

a water inlet pipe 300; a main pipe 311, a pipe 312, and a first water hole 313; second water hole 314

A water outlet pipe 400;

a connecting water pipe 500; a first connection pipe 510; a second connection pipe 520, a water inlet 521, and a groove 522;

a first temperature limiter 610; a second temperature limiter 620;

a first thermostat 710; a second thermostat 720;

a first gear switch 810; a second gear switch 820;

liner 1000, electric heating element 2000, first electric heating element 2001, and second heating element 2002.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that, in the description of the present invention, terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

The electric water heater adopts electric energy as a main energy material, and the high-temperature heat generated after the electric energy is electrified directly heats water stored in the electric water heater so as to achieve the purpose of preparing hot water.

The electric water heater generally comprises a water tank, an electric heating component, an electric control board and the like, wherein a water storage cavity is formed in the water tank to store water to be heated, the electric heating component is inserted into the water storage cavity formed by the water tank, and the electric control board is used for controlling the electric heating component to be powered on and powered off so as to heat the water in the water tank to a set temperature.

For a water tank of an electric water heater, the water tank generally comprises a shell and an inner container, and an insulation layer is formed between the shell and the inner container. Wherein, the shell is generally made of plastic materials so as to meet the design requirements of beautiful and diversified shapes; the inner container can be a metal container body or a plastic container body according to the requirement.

In addition, the heat preservation that forms between shell and the inner bag, the heat preservation material that commonly uses has: asbestos, sponge, foam, polyurethane foam, etc., and in order to obtain a good heat-insulating effect in the conventional art, a heat-insulating layer is usually formed by foaming.

For the liner adopting the metal liner body, the inside of the liner is easy to corrode due to the influence of water quality, and therefore, the water tank is also provided with a magnesium rod which is inserted into a water storage cavity in the water tank.

Since magnesium is the lowest potential metal in the electrochemical sequence, it is physiologically non-toxic. Therefore, the magnesium rod protective liner is very ideal to be used for manufacturing the magnesium rod protective liner. The size of the magnesium rod is directly related to the time of protecting the liner and the protecting effect, and the larger the magnesium rod is, the better the protecting effect is and the longer the protecting time is.

The water tank is also provided with a water inlet pipe and a water outlet pipe, the water inlet pipe is used for conveying cold water into a water storage cavity formed in the water tank, and hot water in the water storage cavity is output from the water outlet pipe.

For the electric heating component, electric heating modes such as electric heating wires, magnetic energy or silicon tube heating can be adopted to heat water stored in the water storage cavity.

For the electric control board, the electric control board is used for receiving detection signals sent by related sensors (such as a water temperature sensor and a flow sensor) and controlling the electric heating component to be powered on and powered off.

When the electric water heater works, the electric heating component is controlled by the electric control board to be electrified and heated, and when the water temperature of the water in the water tank reaches a set value, the electric heating component is controlled by the electric control board to be powered off.

Referring to fig. 5-6, the present invention provides an electric water heater, comprising:

a housing (not shown) forming an installation space;

The two inner containers 1000, the end sockets of the inner containers 1000 are provided with flanges;

a water inlet pipe 300, wherein the water inlet pipe 300 extends into one of the inner containers 1000;

a water outlet pipe 400 extending into the other liner 1000;

a connecting water pipe 500 installed between the inner containers 1000;

an electric heating part 2000, the electric heating part 2000 including a first electric heating element 2001 and a second heating element 2002;

wherein each liner 1000 is provided with an electric heating element 2000, the electric heating element 2000 being provided on said flange, the first 2001 and second 2002 heating elements extending into the liner 1000; the first electric heating element 2001 is arranged along the axial direction of the liner 1000 and is close to the flange, and the second heating element 2002 is attached to the circumferential wall of the liner 1000;

in addition, two liners 1000 are connected together and located in the housing, and the inlet pipe and the outlet pipe extend to the outside of the housing.

Specifically, for each liner 1000, an independent electric heating component is configured to heat water in the liner, and each liner has a columnar structure as a whole, and the columnar structure can be circular or elliptical. When the liner is installed and used in the user's home, the liner can be vertically installed or can be horizontally installed according to the installation requirement of the user's home.

After the user installs the electric heating device in a standing manner at home, as shown in fig. 5, the two inner containers 1000 are in a standing state as a whole, and in this installed state, the first electric heating device 2001 and the second heating device 2002 are in a standing state as a whole, and the end of the inner container 1000 where the flange is arranged is the lowest water storage position of the corresponding inner container 1000. The first electric heating element 2001 is close to the flange arrangement of inner bag 1000 bottom, and then can follow the bottom of inner bag 1000 through first electric heating element and heat, and then realize the water storage in the effectual heating inner bag 1000 to satisfy the requirement of erectting the installation.

Similarly, after the installation in the user's home in the recumbent installation mode, as shown in fig. 6, the two inner containers 1000 are in the recumbent state as a whole, and in this installation state, the first electric heating element 2001 and the second heating element 2002 are in the state of being arranged horizontally as a whole, and the area where the circumferential wall of the inner container 1000 is located at the lowest part is the lowest water storage position of the corresponding inner container 1000. The second heating component 2002 is close to the circumferential wall of the liner 1000 and is in the lowest water storage position area, so that the bottom of the liner 1000 can be heated through the second electric heating component, and water in the liner 1000 can be effectively heated, so that the requirement of horizontal installation is met.

The inlet of the water outlet pipe and the inlet of the water connection pipe are required to be arranged at a higher water storage position in the liner 1000, so as to meet the requirement of maximizing the hot water output rate at the top of the liner 1000.

For this purpose, the inlet of the outlet pipe is then arranged remote from the flange of the inner container 1000 and, in the radial direction of the inner container 1000, also remote from the second heating element 2002 in the corresponding inner container 1000. Thus, no matter the liner 1000 is installed horizontally and vertically, the inlet of the water outlet pipe can be positioned at a higher water storage position in the liner 1000 so as to effectively output hot water at the top of the liner 1000.

Likewise, the inlet of the connecting water pipe is also arranged away from the flange of the inner container 1000 and also away from the second heating element 2002 in the corresponding inner container 1000 in the radial direction of the inner container 1000.

In some embodiments of the application, the outlet of the inlet pipe is located inside the liner 1000 and is adjacent to the same circumferential wall of the liner 1000 as the corresponding second heating element 2002.

Specifically, in order to meet the design of maximizing the hot water output rate of the liner 1000, under the condition that water entering the liner 1000 needs to meet the two installation conditions of horizontal and vertical, water newly entering the liner 1000 enters from the lowest water storage position close to the liner 1000. For this reason, by arranging the outlet of the water inlet pipe close to the flange of the inner container 1000 and also close to the circumferential wall of the same side of the inner container 1000 where the second heating member 2002 is arranged, it is possible to ensure that the water inputted into the inner container 1000 from the water inlet pipe is delivered to the vicinity of the lowest water storage position of the inner container 1000, whether vertically or horizontally mounted.

Similarly, for the outlet of the connection pipe, the outlet of the connection pipe is located inside the liner 1000 to which the water outlet pipe is mounted and is located near the same circumferential wall of the liner 1000 as the corresponding second heating member 2002.

In particular, the outlet of the connecting water pipe is arranged close to the flange of the inner container 1000 and also needs to be close to the circumferential wall of the same side of the inner container 1000 where the second heating member 2002 is arranged.

In another embodiment, the second heating member 2002 extends along the axis of the liner 1000 in order to improve heating efficiency and uniformity.

Specifically, by designing the second heating member 2002 to be arranged to extend in the axial direction of the liner 1000, in order to achieve an improvement in heating efficiency and a uniform heating of water at the bottom of the liner 1000 in the case of horizontal installation by arranging the second heating member 2002 longer with the circumferential wall of the liner 1000.

In another embodiment, to achieve efficient heating of the water at the bottom of the liner 1000 in case of an upright installation, the first electric heater 2001 is circuitously arranged at one side of the flange.

In one embodiment of the present application, as shown in fig. 1-4, a liner 1000 includes a first liner 100 and a second liner 200; the first electric heating member includes a first heating tube 110 and a third heating tube 210; the second heating part includes a second heating pipe 120 and a fourth heating pipe 220; wherein the first heating pipe 110 and the second heating pipe 120 are located in the first liner 100; the third heating pipe 210 and the fourth heating pipe 220 are located in the second bladder 200.

Specifically, the first heating tube 110 and the third heating tube 210 are identical in structure, and the second heating tube 120 is identical in structure to the fourth heating tube 220, so that the first heating tube 110 and the second heating tube 120 in the first liner 100 will be described below as an example.

The first heating pipes 110 are symmetrically arranged U-shaped heating pipes; the first heating pipe 110 is positioned at the water inlet end of the first liner 100; the fixed end of the second heating tube 120 is positioned at the same location as the fixed end of the first heating tube 110. The second heating pipe 120 is generally divided into three parts, a first part being a fixing part arranged side by side with the first heating pipe 110, a second part being a bending part extending toward the sidewall of the first liner 100, and a third part being an extension part extending along the axial direction of the first liner 100 and proximate to the sidewall of the first liner 100.

Further, during the use, during the vertical installation, cold water is concentrated at one end of the first inner container 100 or the second inner container 200, so that only the first heating pipe 110 in the first inner container 100 and the third heating pipe 210 in the second inner container 200 can be controlled to be opened for heating, and the whole water can be heated according to the principle of low hot water density; during horizontal installation, cold water is concentrated at a certain side wall of the first inner container 100 or the second inner container 200, so that only the second heating pipe 120 in the first inner container 100 and the fourth heating pipe 220 in the second inner container 200 can be controlled to be opened for heating; the hot water in the whole inner container can be ensured to be heated uniformly, and a user can enjoy more hot water after the heating is finished.

In a second embodiment, referring to fig. 7, the electric heating device further includes a gear switch for controlling the first electric heating element and the second heating element in the same liner, where the gear switch includes four gears: the first electric heating element and the second heating element are simultaneously turned off, the first electric heating element is only turned on, the second heating element is only turned on, and the first electric heating element and the second heating element are simultaneously turned on.

Further, the device also comprises a temperature controller connected in series with the gear switch; the other end of the temperature controller is connected with the temperature limiter in series.

Further, the gear switch includes a first gear switch 810 and a second gear switch 820; specifically, the first gear switch 810 is provided with four gears: the first heating pipe 110 is connected only, the second heating pipe 120 is connected only, the first heating pipe 110 is connected only, the second heating pipe 120 is connected simultaneously, and the first heating pipe 110 and the second heating pipe 120 are disconnected simultaneously.

Likewise, the second gear switch 820 is also provided with four gears: the first gear is to switch on only the third heating pipe 210, the second gear is to switch on only the fourth heating pipe 220, the third gear is to switch on both the third heating pipe 210 and the fourth heating pipe 220, and the fourth gear is to switch off both the third heating pipe 210 and the fourth heating pipe 220.

The thermostat includes a first thermostat 710 and a second thermostat 720.

Further, the first heating pipe 110 and the second heating pipe 120 are respectively connected with a first gear switch 810, the first gear switch 810 and the first temperature controller 710 are connected in series, and the first heating pipe 110, the second heating pipe 120, the first gear switch 810 and the first temperature controller 710 form a first inner container heating group; the third heating pipe 210 and the fourth heating pipe 220 are respectively connected to a second gear switch 820, the second gear switch 820 and the second temperature controller 720 are connected in series, and the third heating pipe 210, the fourth heating pipe 220, the second gear switch 820 and the second temperature controller 720 form a second liner heating group.

Further, the first inner container heating group and the second inner container heating group are arranged in parallel and connected with the temperature limiter; the temperature limiter includes a first temperature limiter 610 and a second temperature limiter 620 connected in parallel.

Specifically, the first temperature limiter 610 collects the temperature of the first liner 100, the second temperature limiter 620 collects the temperature of the second liner 200, and when the temperature in any liner reaches the warning value, the first temperature limiter 610 or the second temperature limiter 620 is disconnected, so that each heating component pauses heating.

Further, the water heater further comprises a controller, wherein the controller is used for controlling the electric heating component to be powered on and powered off. The specific entity of the controller may be a processor integrated on an electric control board in a conventional electric water heater, which is not limited and described herein.

The control method of the electric water heater comprises the step of controlling the first electric heating element and/or the second electric heating element in the corresponding inner container to be electrified according to the installation posture of the double-container electric water heater.

The method comprises the following steps: according to the target water consumption and the installation mode of the double-liner electric water heater, the first electric heating element and/or the second electric heating element in the corresponding liner are controlled to be electrified and run, and the method specifically comprises the following steps:

s1, the controller collects water consumption set by a user;

s2, controlling the start and stop of the first electric heating element and the second heating element by the controller according to the target water consumption and the installation mode of the liner in the step S1;

s3, the controller collects real-time heating temperatures in the inner containers, and when the real-time heating temperatures exceed the target heating temperatures, the controller controls the corresponding temperature limiters to be disconnected.

The step S3 specifically includes: the first temperature limiter 610 and the second temperature limiter 620 collect real-time heating temperatures in the first liner 100 and the second liner 200, respectively, and transmit the real-time heating temperatures to the controller, and when the real-time heating temperature in any liner reaches a target heating temperature, i.e., an alarm value, the first temperature limiter 610 or the second temperature limiter 620 is disconnected, so that each heating component pauses heating.

In some embodiments, the first electric heating element in the inner container with the water inlet pipe is a first heating pipe, the second electric heating element is a second heating pipe, the first electric heating element in the inner container with the water outlet pipe is a third heating pipe, and the second electric heating element is a fourth heating pipe; the double-liner electric water heater is divided into vertical installation and horizontal installation, and the target water consumption comprises L1 volume, L2 volume, L3 volume and L4 volume, wherein L1 is less than L2 is less than L3 is less than L4.

Specifically, according to the different installation modes of the liner, under different water consumption conditions, in order to meet the requirement of reducing energy consumption, different electric heating components are required to be controlled to be powered on and powered off.

Under the condition of vertical installation at the double-liner electric water heater;

when the target water consumption is L1 volume, the fourth heating pipe is electrified for heating;

when the target water consumption is L2 volume, the third heating pipe is electrified and heated, and the fourth heating pipe is selectively electrified and heated;

when the target water consumption is L3 volume, the second heating pipe and the third heating pipe are simultaneously electrified and heated, and the fourth heating pipe is selectively electrified and heated;

and when the target water consumption is L4 volume, the first heating pipe and the third heating pipe are simultaneously electrified and heated, and the second heating pipe and/or the fourth heating pipe are/is selectively electrified and heated.

Under the condition of horizontal installation at the double-liner electric water heater;

when the target water consumption is L1 volume, the third heating pipe is electrified and heated;

when the target water consumption is L2 volume, the fourth heating pipe is electrified and heated, and the third heating pipe is selectively electrified and heated;

when the target water consumption is L3 volume, the first heating pipe and the fourth heating pipe are simultaneously electrified and heated, and the third heating pipe is selectively electrified and heated;

and when the target water consumption is L4 volume, the second heating pipe and the fourth heating pipe are simultaneously electrified and heated, and the first heating pipe and/or the third heating pipe are/is selectively electrified and heated.

Specifically, by way of example, L1 is 1/4 rated volume of the electric water heater, L2 is 1/2 rated volume of the electric water heater, L3 is 3/4 rated volume of the electric water heater, and L4 is the total rated volume of the electric water heater.

Further, according to the gear settings of the first gear switch 810 and the second gear switch 820, the water heater in this embodiment may have the following usage scenarios:

for a vertically mounted water heater, reference may be made to fig. 1 or 2:

scene one, satisfying a small amount of water for users:

about 1/4 rated volume of hot water can be heated, the water for washing dishes by a user can be satisfied, the control mode is that the first temperature controller 710 is disconnected, the second temperature controller 720 is connected, the second gear switch 820 is switched to a gear II, and only the fourth heating pipe 220 is connected.

Scene two, satisfy user proper amount water:

about 1/2 rated volume of hot water can be heated to meet the requirement of washing dishes by a user or bathing water by a single person, the control mode is that the first temperature controller 710 is disconnected, the second temperature controller 720 is connected, the second gear switch 820 is switched to the I gear, and the water in the inner container at the left side in the figure 1 can be heated only by connecting the third heating pipe 210; or the second gear switch 820 is turned to the iii gear, and simultaneously the third heating pipe 210 and the fourth heating pipe 220 are turned on, so that the water in the left inner container can be rapidly heated.

Scene three, satisfy user's a large amount of water:

about 3/4 rated volume of hot water can be heated to satisfy the user's dish washing and single bathing water, the control mode is to switch on the first temperature controller 710 and simultaneously switch on the second temperature controller 720, the second gear switch 820 is switched to the I gear or the III gear, and the first gear switch 810 is switched to the II gear.

Scene four, satisfy a large amount of water of user:

the double-liner hot water can be heated, a large amount of water for a plurality of users can be met, the control mode is that the first temperature controller 710 is connected and the second temperature controller 720 is connected, the second gear switch 820 is switched to the I gear or the III gear, and meanwhile, the first gear switch 810 is switched to the I gear or the III gear.

For a horizontal mounted water heater, reference may be made to fig. 3 or 4:

Scene one, satisfying a small amount of water for users:

about 1/4 rated volume of hot water can be heated to meet the requirement of washing water for a user, and the control mode is that the first temperature controller 710 is disconnected, the second temperature controller 720 is connected, and the second gear switch 820 is switched to the I gear, so that the water in the inner container at the upper side in the figure 3 can be heated only by connecting the third heating pipe 210.

Scene two, satisfy user proper amount water:

about 1/2 rated volume of hot water can be heated to meet the requirement of dish washing or single bathing water for a user, and the control mode is that the first temperature controller 710 is disconnected, the second temperature controller 720 is connected, the second gear switch 820 is switched to a gear II, and only the fourth heating pipe 220 is connected; alternatively, the second gear switch 820 is turned to the III gear, and simultaneously the third heating pipe 210 and the fourth heating pipe 220 are turned on, so that the water in the left inner container can be rapidly heated.

Scene three, satisfy user's a large amount of water:

about 3/4 rated volume of hot water can be heated to satisfy the user's dish washing and single bathing water, the control mode is to switch on the first temperature controller 710 and simultaneously switch on the second temperature controller 720, the second gear switch 820 is switched to the II gear or the III gear, and the first gear switch 810 is switched to the I gear.

Scene four, satisfy a large amount of water of user:

The double-liner hot water can be heated, so that a large amount of water for a plurality of users can be met, the control mode is that the first temperature controller 710 is connected and the second temperature controller 720 is connected, the second gear switch 820 is switched to the II gear or the III gear, and the first gear switch 810 is switched to the II gear or the III gear.

In a third embodiment, referring to fig. 8 and 9, the present invention further provides an electric water heater, wherein the water inlet pipe 300 includes a main pipe 311 and a pipe 312 sleeved in the main pipe 311; the free end of the main pipe 311 is close to the water inlet end 400 of the first liner 100 and is bent toward the sidewall of the first liner 100.

Further, the main pipe 311 has an L-shaped overall structure, and a first water hole 313 is provided at a free end thereof, and the first water hole 313 is provided along one side of the pipe wall and is located on the pipe wall at one side close to the water inlet end;

the pipe 312 is provided with second water holes 314 along the pipe wall, and the second water holes 314 are distributed on the pipe wall at a side far from the water inlet end.

Specifically, after the pipe 312 is sleeved in the main pipe 311, the first water hole 313 and the second water hole 314 are provided to face each other. When the first liner 100 and the second liner 200 are disposed up and down along the horizontal direction, the water inlet process of the first water inlet pipe 300 is as follows: cold water enters the pipe 312 through the main pipe 311, enters the main pipe 311 again through the second water hole 314 on the left side of the pipe 312, gradually flows into the right space of the first liner 100 through the first water hole 313 on the right side of the main pipe 311, and as the heating pipe heats up for a while, the hot water can be gradually pushed into the second liner 200. Similarly, when the first liner 100 and the second liner 200 are disposed left and right along the vertical direction, the water inlet process of the first water inlet pipe 300 is as follows: cold water enters the pipe 312 through the main pipe 311, enters the main pipe 311 again through the second water hole 314 at the upper side of the pipe 312, gradually flows into the lower space of the first liner 100 through the first water hole 313 at the lower side of the main pipe 311, and as the heating pipe heats up, the hot water can be gradually pushed into the second liner 200.

The first water inlet pipe 300 is arranged to reduce the impact force of water flow through one-time water reflection, and according to the structural characteristics of the liner, cold water is easier to be layered with hot water, so that the performance of the electric water heater is improved.

Further, referring to fig. 9, the piping 312 has an axisymmetric structure, and the inner diameters of both ends thereof are larger than the inner diameter of the center thereof. That is, both ends of the pipe 312 are flared, and it is avoided that the cold water directly enters the main pipe when entering the pipe 312 from the main pipe 311 for the first time, thereby affecting the water flow direction of the cold water.

Further, a blocking cap (not shown) is provided at the free end of the main pipe 311 to fix the main pipe 311 and the pipe 312, so as to prevent cold water from directly flowing out of the free end of the main pipe 311.

Further, the free end of the water outlet pipe 400 is away from the water outlet end of the second liner 200 and is bent toward the sidewall of the second liner 200. Specifically, when the first and second inner containers 100 and 200 are disposed up and down in the horizontal direction, the free end of the first water outlet pipe 400 is extended from the right end to the left end of the second inner container 200 and bent upward at the left end to a position close to the inner wall, so as to increase the output rate of hot water in the second inner container 200. Similarly, when the first and second inner containers 100 and 200 are disposed left and right in the vertical direction, the free end of the first water outlet pipe 400 is extended from the lower end to the upper end of the second inner container 200, and the upper end is bent to the left to a position close to the inner wall, so as to increase the output rate of hot water in the second inner container 200.

Further, a first connecting pipe 510 connected to the connecting pipe 500 is disposed in the first liner 100, and a free end of the first connecting pipe 510 is far away from the water inlet end of the first liner 100. The first connection pipe 510 is used for transferring the heated hot water in the first bladder 100 to the second bladder 200 for continuous heating. Specifically, when the first and second inner containers 100 and 200 are disposed up and down in the horizontal direction, the free end of the first connection pipe 510 is extended from the right end to the left end of the first inner container 100 to increase the output rate of hot water from the first inner container 100. Similarly, when the first and second inner containers 100 and 200 are disposed right and left in the vertical direction, the free end of the first connection tube 510 is extended from the lower end to the upper end of the first inner container 100, so as to increase the output rate of hot water from the second inner container 200.

Further, a second connection pipe 520 connected to the connection pipe 500 is provided in the second liner 200, and a free end of the second connection pipe 520 is close to the water outlet end of the second liner 200.

Further, as shown in fig. 10, water inlet portions 521 are provided along the pipe wall of the second connecting pipe 520, and the water inlet portions 521 are regularly distributed holes.

Referring to fig. 11, a groove 522 is formed in the second connection pipe 520, and a notch of the groove 522 is located at a free end of the second connection pipe 520. The groove 522 is provided to effectively compress the upper space of the second connection pipe 520, thereby preventing water from being intensively sprayed from the top of the second connection pipe 520.

Further, the notch inner diameter of the groove 522 is larger than the groove bottom inner diameter thereof. The water flow in the second connection pipe 520 is buffered, so that the water flow flows out from the hole positioned at the upper part of the second connection pipe 520.

When the first liner 100 and the second liner 200 are arranged left and right along the vertical direction, water heated by the first liner 100 enters the second connecting pipe 520 through the connecting water pipe 500 and then is secondarily heated by the second liner 200, the arrangement of the structure of the second connecting pipe 520 effectively slows down the direct upward impact of cold water, the cold water can slowly flow from all holes of the second connecting pipe 520, and then the cold water can slowly push hot water to the top of the second liner 200 from the bottom under the influence of gravity.

In the fourth embodiment, the first liner 100 and the second liner 200 are disposed on the left and right sides in the vertical direction, and the water inlet pipe 300 connected to the first liner 100 is configured as shown in fig. 10, that is, the second connection pipe 520 in the above embodiment may be configured as a water pipe for entering the first liner 100 with cold water in the water supply network. Likewise, the direct upward impact of the cold water can be slowed down, the flow of the cold water can be slowed down from all holes of the water inlet pipe, and the hot water can be slowly pushed to the top of the first liner 100 from the bottom of the first liner 100 under the influence of gravity.

The fifth embodiment of the invention also provides a control method of the electric water heater, which is used for intelligently controlling the heating start time and the heating quantity of the electric water heater according to the water consumption conditions of different users, and particularly aiming at the people with regular life parts, the control method can greatly improve the user experience and can also save the electric energy to the greatest extent.

The control method specifically comprises the following steps: learning mode and intelligent mode of operation.

In the learning mode, after water in the two inner containers is heated to a set temperature value T in every set time period of N days, when the water temperature in the inner containers is reduced to a temperature greater than DeltaT in every minute, judging the state of continuous water outlet of the electric water heater, and recording the water use starting time tn of the day; when the water temperature in the inner containers is lower than deltaT in every minute, the electric water heater is judged to be in a standby state, and meanwhile, the water heating quantity Qn required for heating the water temperature of the inner containers to a set temperature value is calculated according to the temperature difference of the water temperature of the two inner containers.

Specifically, in the actual use process of the electric water heater installed in the user's home, a period of time set by one week, two weeks, one month or the like may be used as the learning period. In each learning period, after the electric water heater is heated to the set temperature value T each time, judging whether a user uses a large amount of water or not by judging the descending speed of the water temperature in the inner container, and further judging and recording the water use starting time tn of the user. After the water consumption of the user is finished, the water consumption Qn of the hot water used by the user at this time is calculated according to the water temperature drop amount in the liner, so that the heating amount of the electric heating component is controlled according to the Qn.

Under the intelligent operation module, according to the water consumption starting time tn obtained in the previous period, starting an electric heating component to heat water in the liner until the water temperature rises at the time t calculated every day, wherein the heat generated by the electric heating component is not less than the water consumption heat Qn; wherein t=tn- Δt.

Specifically, in the use process of the water heater in the period, the automatic operation of the electric water heater is controlled according to the water use starting time tn and the water use heat Qn obtained in the previous period. Under the condition of no hot water, the electric heating component can be not electrified to heat or can be in medium-low water temperature heat preservation operation at ordinary times, so that the temperature difference between the water in the inner container and the outside can be reduced, and the energy loss caused by heat conduction is further reduced, so that the energy-saving effect is achieved.

Meanwhile, in order to meet the requirement of users for using hot water normally, the electric water heater is started at a time point t calculated every day, so that the electric heating component is electrified to heat water in the inner container. And the heating quantity of the control inner container is heated by taking the water consumption quantity Qn calculated in the previous period as a reference. Therefore, on one hand, after the user returns home, the electric water heater can supply hot water in real time, so that the user does not need to wait for heating the hot water, and on the other hand, the heating capacity of the electric water heater is controlled according to the water heating capacity Qn of the previous period, so that the hot water use requirement of the user can be met, the heat waste caused by heating excessive hot water can be reduced, and the energy consumption is effectively reduced.

In certain embodiments, under the intelligent operation module, the time point t is calculated from the minimum value tmin of the water start time points tn obtained in the previous cycle, i.e., t=tmin—Δt.

Specifically, the time point t for starting heating in the period is calculated by using the minimum value tmin from the water use starting time points tn obtained in the previous period, so that the user can use hot water immediately after returning home, the user does not need to wait for heating, and the user experience is improved.

In another embodiment, under the intelligent operation module, the heat generated by the electric heating element is controlled according to the maximum value Qmax of the water heat Qn obtained in the previous cycle.

Specifically, controlling the amount of heat generated by the electric heating element at the maximum value Qmax for the plurality of amounts of water heat Qn obtained in the previous cycle can ensure that the electric water heater heats enough heat to generate enough hot water for the user.

In some embodiments, in order to increase the hot water output rate, under the intelligent operation module, the electric heating component in the inner container provided with the water outlet pipe is started first, if the inner container is heated to the highest set temperature, the heat generated by the electric heating component is smaller than the water heat Qn, and then the electric heating component in the inner container provided with the water inlet pipe is started.

Specifically, for the electric water heater adopting the two inner containers, in the heating process, the water in the inner container provided with the water outlet pipe is heated first so as to ensure that the inner container has sufficient hot water output, and adverse effects of cold water introduced by the water inlet pipe on the hot water output rate can be reduced to the greatest extent. And after the water temperature of the inner container reaches the highest set temperature, the inner container provided with the water inlet pipe is heated.

In the above embodiments, unless otherwise specified, it is assumed that an electric heating member is provided in each liner.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (14)

1. A double-liner electric water heater, comprising:

a housing forming an installation space;

the sealing heads of the two inner containers are provided with flanges;

the water inlet pipe extends into one of the inner containers;

the water outlet pipe extends into the other inner container;

the connecting water pipe is arranged between the two inner containers;

an electric heating member having a first electric heating element and a second electric heating element;

wherein each inner container is provided with the electric heating component, the electric heating components are arranged on the flange, and the first electric heating piece and the second electric heating piece extend into the inner container; the first electric heating element is arranged along the axial direction of the inner container and is close to the flange, and the second electric heating element is attached to the circumferential wall of the inner container;

In addition, the two inner containers are connected together and located in the shell, and the water inlet pipe and the water outlet pipe extend out of the shell.

2. The dual-liner electric water heater of claim 1, wherein the first electric heating element is circuitously disposed on one side of the flange.

3. The electric double-liner water heater according to claim 1, wherein the second electric heating element comprises a fixing portion, a bending portion and an extending portion which are sequentially connected, the fixing portion and the first electric heating element are arranged side by side, the bending portion extends towards the side wall direction of the liner, and the extending portion extends along the axial direction of the liner and is close to the circumferential wall of the liner.

4. The double-liner electric water heater as claimed in claim 1, wherein the inlet of the water outlet pipe and the inlet of the water connection pipe are respectively close to the same side circumferential wall of the corresponding liner.

5. The dual-bladder electric water heater according to claim 4, wherein the second electric heating element in the bladder with the water outlet tube mounted is adjacent to the circumferential wall of the bladder and is remote from the inlet of the water outlet tube in the radial direction of the bladder, and the second electric heating element in the bladder with the water inlet tube mounted is adjacent to the circumferential wall of the bladder and is remote from the inlet of the connecting water tube in the radial direction of the bladder.

6. The double-liner electric water heater as claimed in claim 1, wherein the outlet of the water inlet pipe is located inside the liner and is adjacent to the same side circumferential wall of the liner as the corresponding second electric heating element.

7. The double-liner electric water heater as claimed in claim 1, wherein the outlet of the water connection pipe is located in the inner liner with the water outlet pipe installed therein and is located on the same side of the circumferential wall as the corresponding second electric heating element adjacent to the inner liner.

8. The dual-liner electric water heater of any one of claims 1-7, further comprising a controller for controlling the electrical heating element to be powered on and off.

9. The dual-liner electric water heater as set forth in claim 8, wherein each of said liners is configured with a thermostat and a gear switch, said thermostat and said gear switch being connected in series, said gear switch selectively switching on said first and/or second electric heating elements in the corresponding liner, said controller being electrically connected to said thermostat and said gear switch, respectively.

10. A control method of a double-liner electric water heater is characterized in that according to the installation posture of the double-liner electric water heater, the first electric heating element and/or the second electric heating element in the corresponding liner are controlled to be electrified and run.

11. The control method of the double-liner electric water heater according to claim 10, wherein the control method specifically comprises: and controlling the first electric heating element and/or the second electric heating element in the corresponding inner container to electrify and run according to the target water consumption and the installation mode of the double-container electric water heater.

12. The control method of the double-liner electric water heater according to claim 11, wherein the first electric heating element in the liner with the water inlet pipe is a first heating pipe, the second electric heating element is a second heating pipe, the first electric heating element in the liner with the water outlet pipe is a third heating pipe, and the second electric heating element is a fourth heating pipe;

the double-liner electric water heater is divided into vertical installation and horizontal installation, and the target water consumption comprises L1 volume, L2 volume, L3 volume and L4 volume, wherein L1 is less than L2 is less than L3 is less than L4.

13. The method for controlling a double-liner electric water heater according to claim 12, wherein in a case of vertical installation at the double-liner electric water heater;

when the target water consumption is L1 volume, the fourth heating pipe is electrified for heating;

when the target water consumption is L2 volume, the third heating pipe is electrified and heated, and the fourth heating pipe is selectively electrified and heated;

When the target water consumption is L3 volume, the second heating pipe and the third heating pipe are simultaneously electrified and heated, and the fourth heating pipe is selectively electrified and heated;

and when the target water consumption is L4 volume, the first heating pipe and the third heating pipe are simultaneously electrified and heated, and the second heating pipe and/or the fourth heating pipe are/is selectively electrified and heated.

14. The method for controlling a double-liner electric water heater according to claim 12, wherein in case of horizontal installation at the double-liner electric water heater;

when the target water consumption is L1 volume, the third heating pipe is electrified and heated;

when the target water consumption is L2 volume, the fourth heating pipe is electrified and heated, and the third heating pipe is selectively electrified and heated;

when the target water consumption is L3 volume, the first heating pipe and the fourth heating pipe are simultaneously electrified and heated, and the third heating pipe is selectively electrified and heated;

and when the target water consumption is L4 volume, the second heating pipe and the fourth heating pipe are simultaneously electrified and heated, and the first heating pipe and/or the third heating pipe are/is selectively electrified and heated.