Double-liner electric water heater

Abstract

The invention discloses a double-inner-container electric water heater which comprises a shell, at least one end of the shell is provided with a first positioning component, and the first positioning component is provided with two positioning concave parts; a first liner; a second liner; wherein the first inner container and the second inner container are arranged side by side and are arranged in the shell, the first end part of the first inner container is positioned in one positioning concave part, and the first end part of the second inner container is positioned in the other positioning concave part. The connection reliability between the two inner containers is improved, so that the assembly reliability of the water heater is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of household appliances, and particularly relates to a double-liner electric water heater. Background Art

[0002] At present, electric water heaters are widely used because of their convenient use. Among them, electric water heaters can be divided into storage-type electric water heaters and instant-type electric water heaters according to the heating power. The storage-type electric water heater is equipped with a water tank, and has the characteristics of large water output and stable water temperature, so it is purchased and used by more families. However, electric water heaters are mainly used for heating to provide hot water for users. In the hot summer, in some southern regions of China and some countries in Southeast Asia, the temperature is very high, and users like to take cold showers. The existing electric water heaters cannot meet the needs of users.

[0003] Chinese Patent Publication No. CN 218033708 U discloses a double-liner electric water heater, which adopts two liners. And in order to ensure the position between the two liners, a connecting bracket is also arranged between the two liners for connection.

[0004] However, in the actual use process, since the two liners need to be filled with water during use, the overall weight of the two filled liners is relatively heavy. During use, relative torsional deformation may occur between the two liners due to the excessive weight after filling with water, thereby affecting the product quality and resulting in low assembly reliability. In view of this, how to design a technology to improve the connection reliability between the two liners to improve the assembly reliability is the technical problem to be solved by the present invention. Summary of the Invention

[0005] The present invention provides a double-liner electric water heater to achieve improving the connection reliability between the two liners, so as to improve the assembly reliability of the water heater.

[0006] To achieve the above technical purpose, the present invention is realized by adopting the following technical solutions: In the first aspect, the present invention provides an electric water heater, including: A housing, at least one end of the housing is provided with a first positioning member, and two positioning recesses are provided on the first positioning member; A first liner; A second liner; Wherein, the first liner and the second liner are arranged side by side and disposed in the housing. The first end of the first liner is located in one of the positioning recesses, and the first end of the second liner is located in the other positioning recess.

[0007] In some embodiments of the present application, the other end of the housing is further provided with a second positioning member, and two positioning holes are provided on the second positioning member; The second end of the first inner tank is provided with a first flange, and a first heater is arranged on the first flange. The second end of the second inner tank is provided with a second flange, and a second heater is arranged on the second flange; Wherein, the first flange is inserted into one of the positioning holes, and the second flange is inserted into the other positioning hole.

[0008] In some embodiments of the present application, an annular retaining ring is further arranged on the second positioning member, and an electrical installation chamber is formed between the second positioning member, the annular retaining ring and the outer shell; A maintenance cover for opening and closing the electrical installation chamber is detachably arranged on the outer shell.

[0009] In some embodiments of the present application, a connecting and fixing member is further arranged between the first inner tank and the second inner tank.

[0010] In some embodiments of the present application, the first inner tank is arranged above the second inner tank; A first fixing bracket is arranged on the first inner tank, and a second fixing bracket is arranged on the second inner tank; a hanging bracket is arranged on the outer shell, and the hanging bracket is fixed on the first fixing bracket through a bolt passing through the outer shell; a cushion block is further arranged on the outer shell, and the cushion block is fixed on the second fixing bracket through a bolt passing through the outer shell.

[0011] In some embodiments of the present application, a jack is arranged on the outer shell, and a tongue and an installation hole are arranged on the hanging bracket. The tongue is inserted into the jack, and a bolt passes through the installation hole and the outer shell and is fixedly connected to the first fixing bracket.

[0012] In some embodiments of the present application, at least two side-by-side arranged connecting channels are formed between the first inner tank and the second inner tank, and the first inner tank and the second inner tank are communicated with each other through the connecting channels.

[0013] In some embodiments of the present application, a first water inlet pipe and a first water outlet pipe are arranged on the first inner tank; a second water inlet pipe and a second water outlet pipe are arranged on the second inner tank; The double-inner-tank electric water heater further includes: A total water inlet joint, arranged outside the outer shell, and the total water inlet joint can be selectively communicated with the second water inlet pipe or the first water inlet pipe; and, A total water outlet joint, arranged outside the outer shell and arranged side by side with the total water inlet joint, and the total water outlet joint can be selectively communicated with the second water outlet pipe or the first water outlet pipe.

[0014] In some embodiments of the present application, it also includes: a temperature control component, which is located inside the shell and is arranged at the bottom of the second inner tank, and the temperature control component is configured to be used for electrically cooling or heating the water in the second inner tank.

[0015] In some embodiments of the present application, the temperature adjustment component includes: A semiconductor refrigeration sheet, wherein the refrigeration surface of the semiconductor refrigeration sheet is in close contact with the outer side wall of the second inner container; and, A heat sink is in close contact with the heating surface of the semiconductor refrigeration plate.

[0016] In some embodiments of the present application, the temperature adjustment component further includes: A heat dissipation fan is fixed on the side of the heat sink facing away from the semiconductor refrigeration sheet.

[0017] In some embodiments of the present application, an opening is provided at a position of the shell corresponding to the temperature adjustment component, a protective shell is provided on the opening, and a side wall of the protective shell is provided with a plurality of ventilation holes.

[0018] In some embodiments of the present application, the double-tank electric water heater further comprises: A first pipeline, wherein the first pipeline is used to connect the second water inlet pipe with the main water inlet joint; a second pipeline, the second pipeline being used to connect the first water inlet pipe with the main water inlet joint; and, A first tee connector is used to connect the first pipeline, the second pipeline and the main water inlet connector.

[0019] In some embodiments of the present application, the double-tank electric water heater further comprises: The first valve is arranged on the first pipeline and is used to open or close the first pipeline.

[0020] In some embodiments of the present application, the double-tank electric water heater further comprises: The second valve is arranged on the second pipeline and is used for opening or closing the second pipeline.

[0021] In some embodiments of the present application, the double-tank electric water heater further comprises: A third pipeline, the third pipeline is used to connect the second water outlet pipe and the main water outlet joint; a fourth pipeline, the fourth pipeline being used to connect the first water outlet pipe with the main water outlet joint; and, A second three-way connector, wherein the second three-way connector is used to connect the third pipeline, the fourth pipeline and the main water outlet connector.

[0022] In some embodiments of the present application, the double-liner electric water heater further includes: A third valve, which is arranged on the third pipeline and is used to open or close the third pipeline.

[0023] In some embodiments of the present application, the double-liner electric water heater further includes: A fourth valve, which is arranged on the fourth pipeline and is used to open or close the fourth pipeline In some other embodiments of the present application, the second water inlet pipe is communicated with the total water inlet joint, and the double-liner electric water heater further includes: A switching component, which is arranged between the second liner and the first liner. The switching component has a first state of conducting the water outlet end of the second water outlet pipe and the water inlet end of the first water inlet pipe, and a second state of conducting the water outlet end of the second water outlet pipe and the total water outlet joint; When the switching component is in the first state, the second liner and the first liner are connected in series; when the switching component is in the second state, the second liner and the first liner are disconnected.

[0024] In some embodiments of the present application, the switching component is an electromagnetic reversing valve.

[0025] Compared with the prior art, the advantages and positive effects of the double-liner electric water heater provided by the present invention are: by arranging a temperature regulating component, the temperature regulating component can regulate the water temperature in the second liner and the first liner, without the need to use structures such as heat exchangers and water pumps in the prior art, the structure is simple and the occupied space is reduced; When the user needs a large amount of hot water, the temperature regulating component heats the water in the second liner and the first liner at the same time. The total water inlet joint can be selectively connected to the second water inlet pipe or the first water inlet pipe, and the total water outlet joint can be selectively connected to the second water outlet pipe or the first water outlet pipe. In this way, the two liners provide hot water for the user, so as to quickly provide the user with a large amount of hot water; When the user needs a small amount of hot water, the temperature regulating component heats the water in the second liner. The total water inlet joint is connected to the second water inlet pipe, and the total water outlet joint is connected to the second water outlet pipe. Or, the temperature regulating component heats the water in the first liner. The total water inlet joint is connected to the first water inlet pipe, and the total water outlet joint is connected to the first water outlet pipe, meeting the user's need for a small amount of hot water; When the user needs cold water, the temperature regulating component cools the water in the second liner. The total water inlet joint is connected to the second water inlet pipe, and the total water outlet joint is connected to the second water outlet pipe, meeting the user's cold water demand; The structure of the present application is simple, convenient for installation, occupies a small indoor space, can meet the user's cold water and different hot water volume demands, and improves the user experience.

[0026] In a second aspect, the present invention provides a control method for a double-liner electric water heater, which is used to control the double-liner electric water heater described in any one of the above first aspects. The working modes of the double-liner electric water heater include a refrigeration mode and a heating mode. The heating mode includes a single-liner heating mode and a double-liner heating mode. The double-liner heating mode includes a double-liner parallel heating mode and a double-liner series heating mode.

[0027] A control method for a double-liner electric water heater includes: Judging the working mode selected by the user; If the working mode is the refrigeration mode, the method includes the following steps: Controlling the second water inlet pipe to communicate with the total water inlet joint, and controlling the second water outlet pipe to communicate with the total water outlet joint; Controlling the temperature adjustment component to be energized to refrigerate the water in the second inner liner.

[0028] In some embodiments of the present application, the control method further includes: If the working mode is the single-liner heating mode, the method includes the following steps: Controlling the second water inlet pipe to communicate with the total water inlet joint, the second water outlet pipe to communicate with the total water outlet joint, and controlling the temperature adjustment component to be energized to heat the water in the second inner liner.

[0029] In some embodiments of the present application, the control method includes: if the working mode is the double-liner heating mode, judging the double-liner heating mode; If the double-liner heating mode is the double-liner parallel heating mode, the method includes the following steps: Controlling the second water inlet pipe and the first water inlet pipe to communicate with the total water inlet joint respectively, the second water outlet pipe and the first water outlet pipe to communicate with the total water outlet joint respectively, and controlling the temperature adjustment component to heat the water in the second inner liner and the first inner liner; If the double-liner heating mode is the double-liner series heating mode, the method includes the following steps: Controlling the second water inlet pipe to communicate with the total water inlet joint, controlling the second water outlet pipe to communicate with the first water inlet pipe, controlling the first water outlet pipe to communicate with the total water outlet joint, and controlling the temperature adjustment component to heat the water in the second inner liner and the first inner liner.

[0030] For the double-liner electric water heater provided by the present invention, by providing a first positioning component in the outer shell and using the positioning recesses formed by the first positioning component to position the ends of the first inner liner and the second inner liner, in this way, when assembled and used together, even if the inner liners are filled with water, the two inner liners can still be positioned and supported by the two positioning recesses of the first positioning component to reduce the displacement of the two inner liners, thereby improving the assembly reliability. Description of the Drawings

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 It is a schematic structural diagram of another embodiment of the double-liner electric water heater of the present invention; Figure 2 It is Figure 1 a schematic structural diagram of removing the outer shell in; Figure 3 It is Figure 2 an exploded view of the double-liner electric water heater in; Figure 4 It is Figure 2 a schematic structural diagram of the hanger in; Figure 5 It is a schematic internal structure diagram of another double-liner electric water heater provided by the present invention; Figure 6 It is Figure 5 a partial enlarged structural diagram of area A in; Figure 7 It is a schematic structural diagram of another double-liner electric water heater provided by the present invention; Figure 8 It is a schematic structural diagram of a protective shell provided by the present invention; Figure 9 It is a schematic structural diagram of another double-liner electric water heater provided by the present invention; Figure 10 It is a schematic internal structure diagram of another double-liner electric water heater provided by the present invention; Figure 11 It is a schematic internal structure diagram of another double-liner electric water heater provided by the present invention; Figure 12 It is a schematic structural diagram of another double-liner electric water heater provided by the present invention. Specific Embodiments

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0034] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0035] In the present invention, unless otherwise clearly defined and limited, the terms such as "installed", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0036] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0037] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0038] Embodiment 2, in combination with Figures 1 to 12 As shown, in the first aspect, the present invention provides a double-liner electric water heater, and the double-liner electric water heater includes a housing 10, a first liner 40, and a second liner 20.

[0039] At least one end of the outer shell is provided with a first positioning member, and two positioning recesses are provided on the first positioning member. Among them, the first inner container and the second inner container are arranged side by side and disposed in the outer shell. The first end of the first inner container is located in one of the positioning recesses, and the first end of the second inner container is located in the other positioning recess.

[0040] Specifically, in the actual assembly process, the first inner container and the second inner container are arranged side by side and fixedly connected together by connecting fixing members. Then, the first inner container and the second inner container are inserted into the outer shell. The first positioning member provided at the end of the outer shell has positioning recesses. After the first inner container and the second inner container are inserted into the outer shell and abutted against the first positioning member, the first end of the first inner container will be inserted into one of the positioning recesses, and the first end of the second inner container will be inserted into the other positioning recess.

[0041] In this way, the first positioning member can effectively position the ends of the first inner container and the second inner container inside the outer shell to reduce the random displacement of the first inner container and the second inner container in the outer shell.

[0042] In another embodiment of the present application, a second positioning member is further provided at the other end of the outer shell, and two positioning holes are provided on the second positioning member; a first flange is provided at the second end of the first inner container, and a first heater is provided on the first flange; a second flange is provided at the second end of the second inner container, and a second heater is provided on the second flange; among them, the first flange is inserted into one of the positioning holes, and the second flange is inserted into the other positioning hole.

[0043] Specifically, for the inner container, in order to meet the installation requirements of the heater, the heater channel is installed at the end of the inner container through the flange. Taking the first inner container as an example, the first end of the first inner container is positioned by the first positioning member, and the second end of the first inner container is provided with a first heater through the first flange. In order to also position the second end of the first inner container, a second positioning member is provided at the other end of the outer shell.

[0044] Positioning holes are formed on the second positioning member. The first inner container is located between the first positioning member and the second positioning member, and the first flange on the first inner container passes through the positioning holes to achieve positioning. In this way, both ends of the first inner container and the second inner container are positioned and supported by the first positioning member and the second positioning member respectively, so as to reduce the phenomenon of displacement of the first inner container and the second inner container in the outer shell and improve the assembly reliability.

[0045] In some embodiments, an annular retaining ring is further provided on the second positioning member. An electrical appliance installation chamber is formed between the second positioning member, the annular retaining ring and the outer shell. A maintenance cover for opening and closing the electrical appliance installation chamber is detachably provided on the outer shell.

[0046] Specifically, the annular retaining ring is located between the second positioning member and the outer shell to form an electrical appliance installation chamber, in which components such as an electric control board and a controller can be assembled.

[0047] In some embodiments, the first inner tank is arranged above the second inner tank. A first fixing bracket is provided on the first inner tank, and a second fixing bracket is provided on the second inner tank. A hanging bracket is provided on the outer shell, and the hanging bracket is fixed to the first fixing bracket by a bolt passing through the outer shell. A cushion block is further provided on the outer shell, and the cushion block is fixed to the second fixing bracket by a bolt passing through the outer shell.

[0048] Specifically, in order to meet the requirements for wall-mounted installation of a double-tank electric water heater, a hanging bracket also needs to be configured on the outer shell. The hanging bracket usually needs to be connected to the inner tank inside the outer shell. For this purpose, a first fixing bracket is configured on the first inner tank to fixedly connect the hanging bracket and the first fixing bracket together by bolts. At the same time, since the overall height dimension of the double-tank electric water heater is relatively large, in order to ensure that the outer shell can be flat against the wall, a second fixing bracket is also configured on the second inner tank to meet the requirement of installing a cushion block on the back of the outer shell through the second fixing bracket.

[0049] In this way, the double-tank electric water heater can be suspended on the wall through the hanging bracket, and the lower part of the outer shell can be supported by the cushion block to ensure a stable and reliable installation.

[0050] In some embodiments, in order to reduce the number of bolts used to install the hanging bracket on the outer shell, a jack is provided on the outer shell, and a tongue and an installation hole are provided on the hanging bracket. The tongue is inserted into the jack, and the bolt passes through the installation hole and the outer shell and is fixedly connected to the first fixing bracket.

[0051] Specifically, when assembling the hanging bracket, the lower end of the hanging bracket is positioned by inserting the tongue into the jack of the outer shell. Then, the bolt is inserted into the installation hole and extends into the outer shell to be fixedly connected to the first fixing bracket.

[0052] Embodiment 2, in combination with Figures 5 to 12 As shown, in the first aspect, the present invention provides a double-inner-tank electric water heater, in which a total water inlet joint 50, a total water outlet joint 60 and a controller are provided on the outer shell 10. The temperature adjustment component includes a first heater 203, a temperature adjustment component 30, and a second heater 403.

[0053] The second inner tank 20 is disposed within the outer shell 10, and a second water inlet pipe 201 and a second water outlet pipe 202 are provided on the second inner tank 20; The first heater 203 is disposed in the second inner tank 20, and the first heater 203 is configured to electrically heat the water in the second inner tank 20; The temperature adjustment assembly 30 is located inside the outer shell 10 and is disposed at the bottom of the second inner tank 20. The temperature adjustment assembly 30 is configured to electrically cool or heat the water in the second inner tank 20; The first inner tank 40 is disposed within the outer shell 10 and is arranged side by side with the second inner tank 20. A first water inlet pipe 401 and a first water outlet pipe 402 are provided on the first inner tank 40; The second heater 403 is disposed in the first inner tank 40, and the second heater 403 is configured to electrically heat the water in the first inner tank 40; The main water inlet joint 50 is disposed outside the outer shell 10, and the main water inlet joint 50 is selectively communicable with the second water inlet pipe 201 or the first water inlet pipe 401; and, The main water outlet joint 60 is disposed outside the outer shell 10 and is arranged side by side with the main water inlet joint 50. The main water outlet joint 60 is selectively communicable with the second water outlet pipe 202 or the first water outlet pipe 402.

[0054] Specifically, by providing the first heater 203, the second water inlet pipe 201, and the second water outlet pipe 202 on the second inner tank 20, and providing the temperature adjustment assembly 30 at the bottom of the second inner tank 20; providing the second heater 403, the first water inlet pipe 401, and the first water outlet pipe 402 on the first inner tank 40; wherein, the first heater 203, the second heater 403, and the temperature adjustment assembly 30 are electrically connected to the controller; When the user needs a relatively large amount of hot water, the first heater 203 and the second heater 403 work simultaneously. The temperature adjustment assembly 30 can assist the first heater 203 in heating the water in the second inner tank 20. The main water inlet joint 50 is selectively communicable with the second water inlet pipe 201 or the first water inlet pipe 401, and the main water outlet joint 60 is selectively communicable with the second water outlet pipe 202 or the first water outlet pipe 402. In this way, the two inner tanks provide hot water for the user. Specifically, the second inner tank 20 and the first inner tank 40 can be connected in series or in parallel, so as to quickly provide the user with a relatively large amount of hot water; When the user needs a relatively small amount of hot water, the first heater 203 operates, and the temperature adjustment component 30 can assist the first heater 203 in heating the water in the second inner tank 20. The total water inlet joint 50 is connected to the second water inlet pipe 201, and the total water outlet joint 60 is connected to the second water outlet pipe 202. Alternatively, the second heater 403 operates, the total water inlet joint 50 is connected to the first water inlet pipe 401, and the total water outlet joint 60 is connected to the first water outlet pipe 402, meeting the user's demand for a relatively small amount of hot water, and at the same time preventing the operation of one of the second inner tank 20 and the first inner tank 40 from being affected due to a failure of the other inner tank; When the user needs cold water, neither the first heater 203 nor the second heater 403 operates, and the temperature adjustment component 30 is powered on to cool the water in the second inner tank 20. The total water inlet joint 50 is connected to the second water inlet pipe 201, and the total water outlet joint 60 is connected to the second water outlet pipe 202, meeting the user's cold water demand. The structure is simple and occupies less indoor space, capable of meeting the user's cold water and different hot water volume demands, and improving the user experience.

[0055] It should be noted that the temperature adjustment component 30 can both refrigerate and heat, and the switching between refrigeration and heating is achieved by changing the circuit connection method. For example, when the terminals of the temperature adjustment component 30 are connected in the forward direction, it heats, and when the terminals are connected in the reverse direction, it refrigerates.

[0056] In some embodiments of the present application, the temperature adjustment component 30 includes a thermoelectric cooler 301 and a heat sink 302.

[0057] The refrigerating surface of the thermoelectric cooler 301 is closely attached to the outer side wall of the second inner tank 20; The heat sink 302 is closely attached to the heating surface of the thermoelectric cooler 301.

[0058] The working principle of the thermoelectric cooler 301 is as follows: The Peltier effect is used, that is, when an electric current passes through a loop composed of different conductors, in addition to generating irreversible Joule heat, heat absorption and heat release phenomena will occur at the joints of different conductors respectively with different current directions. Structurally, a lot of N and P semiconductors are sealed in the thermoelectric cooler 301, and they are connected together to form numerous thermocouple pairs. The thermocouple pairs are then connected in series and parallel to achieve operation. When a directional electric current passes through, energy transfer will occur between the thermocouple pairs, transferring from one end to the other end, thereby generating a temperature difference to form a cold end and a hot end.

[0059] Specifically, by providing a thermoelectric cooler 301 and a heat sink 302, the cooling surface of the thermoelectric cooler 301 is closely attached to the outer side wall of the second inner container 20, which can cool the water in the second inner container 20; the heat sink 302 is closely attached to the heating surface of the thermoelectric cooler 301, and the heat sink 302 can help the thermoelectric cooler 301 dissipate heat. In this way, when the user needs cold water, the thermoelectric cooler 301 is powered on for refrigeration to cool the water in the second inner container 20, meeting the user's cold water demand.

[0060] When the temperature adjustment component 30 needs to heat, the terminals of the thermoelectric cooler 301 are reversely connected, and the surface of the thermoelectric cooler 301 close to the second inner container 20 can be heated.

[0061] In some embodiments of the present application, the temperature adjustment component 30 further includes a cooling fan 303.

[0062] The cooling fan 303 is fixed on the side of the heat sink 302 facing away from the thermoelectric cooler 301.

[0063] Specifically, by providing the cooling fan 303, the rotation of the cooling fan 303 accelerates the gas flow.

[0064] In other embodiments, the temperature adjustment component 30 includes an electric heating plate.

[0065] The electric heating plate is a heating material made of an electric heating alloy wire, with a mica soft plate as the insulating material and is heated by being wrapped with a thin metal plate. The electric heating plate is used for power-on heating to assist in heating the second inner container 20.

[0066] In some embodiments of the present application, an opening is provided at a position of the outer shell 10 corresponding to the temperature adjustment component 30, and a protective shell 102 is provided on the opening, and a plurality of ventilation holes 1021 are provided on the side wall of the protective shell 102.

[0067] Specifically, by providing an opening at a position of the outer shell 10 corresponding to the temperature adjustment component 30, and a protective shell 102 is provided on the opening, the outer shell 10 and the protective shell 102 are of a split structure, which is convenient for maintenance; by providing a plurality of ventilation holes 1021 on the side wall of the protective shell 102, the ventilation holes 1021 can be used for the cooling fan 303 to intake air, accelerating the gas exchange inside and outside the protective shell 102 and contributing to heat dissipation.

[0068] Exemplarily, the ventilation holes 1021 are long strip-shaped.

[0069] In some other embodiments, a drain hole 1022 is provided at the bottom end of the protective shell 102. When the temperature regulating component 30 cools the second inner tank 20, when the air between the outer shell 10 and the second inner tank 20 and the first inner tank 40 encounters the relatively low-temperature second inner tank 20, the water vapor in the air liquefies to generate condensed water, and the condensed water is discharged from the drain hole 1022, preventing the condensed water from accumulating in the protective shell 102.

[0070] It should be noted that a waterproof cover 1023 is further provided above the drain hole 1022. In this way, when the user takes a bath, the bath water will not splash into the protective shell 102, which is beneficial to protecting the devices in the protective shell 102.

[0071] In some embodiments, a first temperature sensor is further provided in the second inner tank 20, and the first temperature sensor is used to detect the water temperature in the second inner tank 20; In some other embodiments, the first temperature sensor is electrically connected to the controller.

[0072] In some other embodiments, a first magnesium rod is further provided in the second inner tank 20.

[0073] Exemplarily, the first heater 203, the first magnesium rod and the first temperature sensor are integrally arranged on the end cover of the second inner tank 20.

[0074] In some embodiments, a second temperature sensor is provided in the first inner tank 40, and the second temperature sensor is used to detect the water temperature in the first inner tank 40; In some other embodiments, the second temperature sensor is electrically connected to the controller.

[0075] In some other embodiments, a second magnesium rod is further provided in the first inner tank 40.

[0076] Exemplarily, the second heater 403, the second magnesium rod and the second temperature sensor are integrally arranged on the end cover of the first inner tank 40.

[0077] In some embodiments of the present application, the double-inner-tank electric water heater further includes a first pipeline 501, a second pipeline 502 and a first three-way joint 503.

[0078] The first pipeline 501 is used to connect the second water inlet pipe 201 and the total water inlet joint 50; The second pipeline 502 is used to connect the first water inlet pipe 401 and the total water inlet joint 50; and, The first three-way joint 503 is used to connect the first pipeline 501, the second pipeline 502 and the total water inlet joint 50.

[0079] Specifically, by providing the first pipeline 501, the second pipeline 502, and the first three-way joint 503, the first pipeline 501 and the second pipeline 502 are connected in parallel through the first three-way joint 503, simplifying the pipeline arrangement, saving the usage of pipeline components, and facilitating installation operations and subsequent maintenance.

[0080] In some embodiments of the present application, the double-liner electric water heater further includes a first valve 5011.

[0081] The first valve 5011 is provided on the first pipeline 501 and is used to open or close the first pipeline 501.

[0082] Specifically, by providing the first valve 5011 on the first pipeline 501, and the first valve 5011 being used to open or close the first pipeline 501, the connection or disconnection between the second water inlet pipe 201 and the total water inlet joint 50 is realized.

[0083] Exemplarily, the first valve 5011 can be a solenoid valve, a mechanical valve, a ball valve, etc.

[0084] In some embodiments of the present application, the double-liner electric water heater further includes a second valve 5021.

[0085] The second valve 5021 is provided on the second pipeline 502 and is used to open or close the second pipeline 502.

[0086] Specifically, by providing the second valve 5021 on the second pipeline 502, and the second valve 5021 being used to open or close the second pipeline 502, the connection and disconnection between the first water inlet pipe 401 and the total water inlet joint 50 are realized.

[0087] Exemplarily, the second valve 5021 can be a solenoid valve, a mechanical valve, a ball valve, etc.

[0088] In some embodiments of the present application, the double-liner electric water heater further includes a third pipeline 601, a fourth pipeline 602, and a second three-way joint 603.

[0089] The third pipeline 601 is used to connect the second water outlet pipe 202 to the total water outlet joint 60; The fourth pipeline 602 is used to connect the first water outlet pipe 402 to the total water outlet joint 60; The second three-way joint 603 is used to connect the third pipeline 601, the fourth pipeline 602, and the total water outlet joint 60.

[0090] Specifically, by providing the third pipeline 601, the fourth pipeline 602, and the second three-way joint 603, the third pipeline 601 and the fourth pipeline 602 are connected in parallel through the second three-way joint 603, simplifying the pipeline arrangement, saving the usage of pipeline components, and facilitating installation operations and subsequent maintenance.

[0091] In some embodiments of the present application, the double-liner electric water heater further includes a third valve 6011.

[0092] The third valve 6011 is disposed on the third pipeline 601 and is used to open or close the third pipeline 601.

[0093] Specifically, by providing the third valve 6011 on the third pipeline 601, the third valve 6011 is used to open or close the third pipeline 601, so as to realize the on-off of the second water outlet pipe 202 and the total water outlet joint 60.

[0094] Exemplarily, the third valve 6011 can be a solenoid valve, a mechanical valve, a ball valve, etc.

[0095] In some embodiments of the present application, the double-liner electric water heater further includes a fourth valve 6021.

[0096] The fourth valve 6021 is disposed on the fourth pipeline 602 and is used to open or close the fourth pipeline 602.

[0097] Specifically, by providing the fourth valve 6021 on the fourth pipeline 602, the fourth valve 6021 is used to open or close the fourth pipeline 602, so as to realize the on-off of the first water outlet pipe 402 and the total water outlet joint 60.

[0098] Exemplarily, the fourth valve 6021 can be a solenoid valve, a mechanical valve, a ball valve, etc.

[0099] In some other embodiments of the present application, the second water inlet pipe 201 is communicated with the total water inlet joint 50, and the double-liner electric water heater further includes a switching component 80.

[0100] The switching component 80 is disposed between the second inner tank 20 and the first inner tank 40. The switching component 80 has a first state in which the water outlet end of the second water outlet pipe 202 is conducted with the water inlet end of the first water inlet pipe 401, and a second state in which the water outlet end of the second water outlet pipe 202 is conducted with the total water outlet joint 60; When the switching component 80 is in the first state, the second inner tank 20 and the first inner tank 40 are connected in series; when the switching component 80 is in the second state, the second inner tank 20 and the first inner tank 40 are disconnected.

[0101] Specifically, as shown in Figure 8 and Figure 9 when the switching component 80 is in the first state, the second inner tank 20 and the first inner tank 40 are connected in series, and the electric water heater is used as a double-tank; as shown in Figure 6 and Figure 7 when the switching component 80 is in the second state, the second inner tank 20 and the first inner tank 40 are disconnected, and the electric water heater is used as a single-tank.

[0102] Specifically, by providing a switching component 80 between the second inner tank 20 and the first inner tank 40, the switching component 80 has a first state in which the water outlet end of the second water outlet pipe 202 and the water inlet end of the first water inlet pipe 401 are connected. At this time, the electric water heater is used as a double-tank water heater; and a second state in which the water outlet end of the second water outlet pipe 202 and the main water outlet joint 60 are connected. At this time, the electric water heater is used as a single-tank water heater; the switching component 80 can switch between the first state and the second state, realizing the switching of the electric water heater between single-tank and double-tank, with a simple structure, convenient processing and installation.

[0103] Specifically, when the electric water heater is used as a double-tank water heater and the switching component 80 is in the first state, the second inner tank 20 and the first inner tank 40 are connected in series. The water flow process is as follows: Cold water flows into the second water inlet pipe 201 from the main water inlet joint 50, then flows from the second water inlet pipe 201 into the second inner tank 20. After the water is heated in the second inner tank 20, it flows into the switching component 80 through the second water outlet pipe 202, flows into the first water inlet pipe 401 through the switching component 80, and then flows into the first inner tank 40 from the first water inlet pipe 401. After the water is further heated in the first inner tank 40, it flows out through the first water outlet pipe 402; it can meet the user's demand for a relatively large amount of hot water. Exemplarily, the first water outlet pipe 402 is connected to the main water outlet joint 60 through a pipeline.

[0104] When the electric water heater is used as a single-tank water heater and the switching component 80 is in the second state, the second inner tank 20 and the first inner tank 40 are disconnected. The water flow process is as follows: Cold water flows into the second water inlet pipe 201 from the main water inlet joint 50, then flows from the second water inlet pipe 201 into the second inner tank 20. After the water is heated in the second inner tank 20, it flows into the switching component 80 through the second water outlet pipe 202, and flows into the main water outlet joint 60 through the switching component 80; it can meet the user's demand for a relatively small amount of hot water and avoid waste of hot water resources.

[0105] It can be understood that the switching component 80 can selectively connect the second inner tank 20 and the first inner tank 40, or connect the second inner tank 20 and the main water outlet joint 60.

[0106] Combined Figure 5 and Figure 6 As shown, in some embodiments, the switching component 80 includes a valve body 801.

[0107] The interior of the valve body 801 is provided with a cavity 8011. The valve body 801 is provided with a first opening end 8012, a second opening end 8013 and a third opening end 8014. The first opening end 8012 is located on one side of the valve body 801, and the second opening end 8013 and the third opening end 8014 are located on the other side of the valve body 801. The first opening end 8012, the second opening end 8013 and the third opening end 8014 are all in communication with the cavity 8011. The first opening end 8012 is in communication with the water outlet end of the second water outlet pipe 202, the second opening end 8013 is in communication with the water inlet end of the first water inlet pipe 401, and the third opening end 8014 is in communication with the total water outlet joint 60.

[0108] In this way, the cavity 8011 in the valve body 801 communicates with the second water outlet pipe 202, the first water inlet pipe 401 and the total water outlet joint 60, so that the second inner tank 20, the first inner tank 40 and the switching component 80 are connected.

[0109] In some embodiments, the first opening end 8012 is located on one side of the valve body 801, and the second opening end 8013 and the third opening end 8014 are located on the other side of the valve body 801, which facilitates the connection of the valve body 801 with the second water outlet pipe 202 and the first water inlet pipe 401.

[0110] In another embodiment, the cavity 8011 is cylindrical or cuboid. Of course, the shape of the cavity 8011 includes but is not limited to the above shapes.

[0111] In an embodiment of the present application, the switching component 80 further includes a valve core 802.

[0112] The valve core 802 is arranged in the cavity 8011 and is slidably connected to the valve body 801.

[0113] Specifically, by arranging the cavity 8011 in the valve body 801 and arranging the valve core 802 in the cavity 8011, the cavity 8011 provides a movement channel for the valve core 802. By slidably connecting the valve core 802 with the valve body 801, the switching component 80 is switched between the first state and the second state, realizing the series connection or disconnection of the second inner tank 20 and the first inner tank 40 of the electric water heater.

[0114] In some embodiments of the present application, the valve core 802 is adapted to the cavity 8011, and the valve core 802 is configured as: When the valve core 802 slides to one end of the cavity 8011, the valve core 802 conducts the first opening end 8012 and the second opening end 8013, and blocks the third opening end 8014, and the switching component 80 is in the first state; when the valve core 802 slides to the other end of the cavity 8011, the valve core 802 conducts the first opening end 8012 and the third opening end 8014, and blocks the second opening end 8013, and the switching component 80 is in the second state.

[0115] Specifically, by moving the valve core 802, the first opening end 8012 and the second opening end 8013 are communicated, and the third opening end 8014 is blocked, so that the switching component 80 is in the first state, and the second inner tank 20 and the first inner tank 40 are connected in series, and the electric water heater is used as a double-tank; or by moving the valve core 802, the first opening end 8012 and the third opening end 8014 are communicated, and the second opening end 8013 is blocked, so that the switching component 80 is in the second state, and the second inner tank 20 and the first inner tank 40 are disconnected, and the electric water heater is used as a single-tank.

[0116] In some embodiments of the present application, in combination with Figures 6 to 9 As shown, a water flow channel is provided in the valve core 802, and the water flow channel includes a first flow channel 8021, a second flow channel 8022 and a third flow channel 8023.

[0117] The openings of the first flow channel 8021 and the second flow channel 8022 face the first opening end 8012; The opening of the third flow channel 8023 faces the second opening end 8013, and is opposite to the opening direction of the second flow channel 8022, and the first flow channel 8021, the second flow channel 8022 and the third flow channel 8023 are communicated; Wherein, the distance between the opening of the first flow channel 8021 and the opening of the second flow channel 8022 is equal to the distance between the second opening end 8013 and the third opening end 8014, the openings of the second flow channel 8022 and the third flow channel 8023 face in opposite directions, and the openings of the second flow channel 8022 and the third flow channel 8023 are on the same straight line.

[0118] The first flow channel 8021, the second flow channel 8022 and the third flow channel 8023 are communicated to provide a flow path for water flow; In some embodiments of the present application, the switching component 80 is an electromagnetic reversing valve.

[0119] Specifically, by setting the switching component 80 as an electromagnetic reversing valve, the valve core 802 is attracted and pushed by an electromagnet to change the position of the valve core 802 in the cavity 8011, so as to realize the switching of the electric water heater between single-tank and double-tank, with a simple structure, convenient for users to operate, and convenient for processing and installation.

[0120] In combination with Figure 10 As shown, in some other embodiments of the present application, the double-inner-tank electric water heater further includes a fifth pipeline 70.

[0121] The fifth pipeline 70 is used to connect the second water outlet pipe 202 and the first water inlet pipe 401.

[0122] Specifically, by providing a fifth pipeline 70 that connects the second water outlet pipe 202 and the first water inlet pipe 401, the second inner tank 20 and the first inner tank 40 can be connected in series.

[0123] In some other embodiments of the present application, the double-inner-tank electric water heater further includes a fifth valve 701.

[0124] The fifth valve 701 is provided on the fifth pipeline 70 and is used to open or close the fifth pipeline 70.

[0125] Specifically, by providing the fifth valve 701 on the fifth pipeline 70, the fifth valve 701 is used to open or close the fifth pipeline 70, so as to connect or disconnect the second inner tank 20 and the first inner tank 40 in series.

[0126] Exemplarily, the fifth valve 701 can be a solenoid valve, a mechanical valve, a ball valve, etc.

[0127] When the user needs a larger amount of hot water, the first heater 203 and the second heater 403 work simultaneously. The temperature adjustment assembly 30 can assist the first heater 203 in heating the water in the second inner tank 20. At this time, the second inner tank 20 and the first inner tank 40 can be connected in series or in parallel to provide hot water for the user at the same time. Specifically, when the second inner tank 20 and the first inner tank 40 are connected in series, the first valve 5011, the fifth valve 701, and the fourth valve 6021 are all opened, and the second valve 5021 and the third valve 6011 are closed. The total water inlet joint 50 is connected to the second water inlet pipe 201. The fifth pipeline 70 connects the second inner tank 20 and the first inner tank 40. The first water outlet pipe 402 is connected to the total water outlet joint 60. The second inner tank 20 and the first inner tank 40 are connected in series to provide hot water for the user. When the second inner tank 20 and the first inner tank 40 are connected in parallel to provide hot water for the user, specifically, the fifth valve 701 is closed, and the first valve 5011, the second valve 5021, the third valve 6011, and the fourth valve 6021 are all opened. In this way, the second inner tank 20 and the first inner tank 40 can be connected in parallel to provide hot water for the user.

[0128] The above-mentioned second inner tank 20 and first inner tank 40 can be connected in series or in parallel, so as to quickly provide the user with a larger amount of hot water. When the user needs less hot water, single-tank water supply can be adopted, that is, the second inner tank 20 supplies water or the first inner tank 40 supplies water. Specifically, when the second inner tank 20 supplies water, the first heater 203 works, and the temperature adjustment component 30 can assist the first heater 203 to heat the water in the second inner tank 20. The first valve 5011 and the third valve 6011 are opened, and the second valve 5021, the fourth valve 6021, and the fifth valve 701 are all closed. When the first inner tank 40 supplies water, the second heater 403 works, the second valve 5021 and the fourth valve 6021 are opened, and the first valve 5011, the third valve 6011, and the fifth valve 701 are all closed, which can meet the user's need for less hot water, and at the same time prevent the failure of one of the second inner tank 20 and the first inner tank 40 from affecting the operation of the other inner tank. When the user needs cold water, neither the first heater 203 nor the second heater 403 works. The temperature adjustment component 30 is powered on to cool the water in the second inner tank 20. The first valve 5011 and the third valve 6011 are opened, and the second valve 5021, the fourth valve 6021, and the fifth valve 701 are all closed. The total water inlet joint 50 is connected to the second water inlet pipe 201, and the total water outlet joint 60 is connected to the second water outlet pipe 202, meeting the user's cold water demand. The structure is simple, occupies less indoor space, can meet the user's cold water and different hot water volume requirements, and improves the user experience.

[0129] In a second aspect, the present invention provides a control method for a double-inner-tank electric water heater, which is used to control the double-inner-tank electric water heater in any one of the embodiments of the first aspect. The working modes of the double-inner-tank electric water heater include a refrigeration mode and a heating mode. The heating mode includes a single-tank heating mode and a double-tank heating mode. The double-tank heating mode includes a double-tank parallel heating mode and a double-tank series heating mode.

[0130] In some embodiments of the present application, determine the working mode selected by the user; If the working mode is the refrigeration mode, the method includes the following steps: Control the second water inlet pipe 201 to be connected to the total water inlet joint 50, and control the second water outlet pipe 202 to be connected to the total water outlet joint 60; Control the temperature adjustment component 30 to be powered on to cool the water in the second inner tank 20 to realize the supply of cold water.

[0131] In the refrigeration mode, when the water temperature T in the second water outlet pipe 202 reaches the preset temperature T 0 , control the temperature adjustment component 30 to stop refrigerating.

[0132] When it is detected that the water temperature T in the second water outlet pipe 202 ≤ the preset temperature T 0 - the preset temperature rise δT 1 , restart the temperature adjustment component 30 to refrigerate.

[0133] In some embodiments of the present application, if the working mode is the single-tank heating mode, the method includes the following steps: Control the first water inlet pipe 401 to communicate with the total water inlet joint 50, the first water outlet pipe 402 to communicate with the total water outlet joint 60, and control the second heater 403 to work to realize single-tank hot water production; Alternatively, control the second water inlet pipe 201 to communicate with the total water inlet joint 50, the second water outlet pipe 202 to communicate with the total water outlet joint 60, control the first heater 203 to work, and control the temperature adjustment component 30 to be energized for heating to realize single-tank hot water production.

[0134] In some embodiments of the present application, if the working mode is the double-tank heating mode, determine the double-tank heating mode; If the double-tank heating mode is the double-tank parallel heating mode, the method includes the following steps: Control the second water inlet pipe 201 and the first water inlet pipe 401 to communicate with the total water inlet joint 50 respectively, the second water outlet pipe 202 and the first water outlet pipe to communicate with the total water outlet joint 60 respectively, control the first heater 203 and the second heater 403 to work, and control the temperature adjustment component 30 to heat to realize double-tank hot water production; If the double-tank heating mode is the double-tank series heating mode, the method includes the following steps: Control the second water inlet pipe 201 to communicate with the total water inlet joint 50, control the second water outlet pipe 202 to communicate with the first water inlet pipe 401, control the first water outlet pipe 402 to communicate with the total water outlet joint 60, control the first heater 203 and the second heater 403 to work, and control the temperature adjustment component 30 to heat to realize double-tank hot water production.

[0135] Specifically, by controlling different working modes, namely the refrigeration mode, the single-tank heating mode, the double-tank series heating mode, and the double-tank parallel heating mode, the personalized needs of users can be met.

[0136] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0137] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions required to be protected by the present invention.

Claims

1. A double-liner electric water heater, characterized in that, it includes: a housing, at least one end of the housing is provided with a first positioning member, and two positioning recesses are provided on the first positioning member; a first inner liner; a second inner liner; wherein, the first inner liner and the second inner liner are arranged side by side and disposed in the housing, a first end of the first inner liner is located in one of the positioning recesses, and a first end of the second inner liner is located in the other positioning recess.

2. The double-liner electric water heater according to claim 1, characterized in that, a second positioning member is further provided at the other end of the housing, and two positioning holes are provided on the second positioning member; a first flange is provided at a second end of the first inner liner, a first heater is provided on the first flange, a second flange is provided at a second end of the second inner liner, and a second heater is provided on the second flange; wherein, the first flange is inserted into one of the positioning holes, and the second flange is inserted into the other positioning hole.

3. The double-liner electric water heater according to claim 2, characterized in that, a ring-shaped retaining ring is further provided on the second positioning member, and an electrical installation chamber is formed between the second positioning member, the ring-shaped retaining ring and the housing; a maintenance cover for opening and closing the electrical installation chamber is detachably provided on the housing.

4. The double-liner electric water heater according to claim 1, characterized in that, a connecting and fixing member is further provided between the first inner liner and the second inner liner.

5. The double-liner electric water heater according to claim 1, characterized in that, the first inner liner is arranged above the second inner liner.

6. The double-liner electric water heater according to claim 5, characterized in that, a first fixing bracket is provided on the first inner liner, and a second fixing bracket is provided on the second inner liner; a hanging bracket is provided on the housing, and the hanging bracket is fixed on the first fixing bracket by a bolt passing through the housing; a cushion block is further provided on the housing, and the cushion block is fixed on the second fixing bracket by a bolt passing through the housing.

7. The double-liner electric water heater according to claim 6, characterized in that, a jack is provided on the housing, a tongue and an installation hole are provided on the hanging bracket, the tongue is inserted into the jack, and a bolt passes through the installation hole and the housing and is fixedly connected to the first fixing bracket.

8. The double-liner electric water heater according to any one of claims 1-7, characterized in that, at least two connection channels arranged side by side are formed between the first inner liner and the second inner liner, and the first inner liner and the second inner liner are communicated with each other through the connection channels.

9. The double-liner electric water heater according to any one of claims 1-7, characterized in that, a first water inlet pipe and a first water outlet pipe are provided on the first inner liner, and a second water inlet pipe and a second water outlet pipe are provided on the second inner liner; the double-liner electric water heater further includes: a total water inlet joint, which is arranged outside the housing, and the total water inlet joint can be selectively communicated with the second water inlet pipe or the first water inlet pipe; The total water outlet joint is arranged outside the housing and arranged side by side with the total water inlet joint. The total water outlet joint can be selectively connected to the second water outlet pipe or the first water outlet pipe.

10. The double-inside-tank electric water heater according to claim 9, characterized in that it further includes a temperature regulation component, which is located inside the housing and arranged at the bottom of the second inner tank. The temperature regulation component is configured to cool or heat the water in the second inner tank by being powered on.

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