CN215175972U - Water heating device - Google Patents

Abstract

The utility model relates to a water heating device, water heating device includes two at least inner bag subassemblies and two at least change over switches, every inner bag subassembly includes the inner bag, add heat-insulating material and outlet pipe, the inner bag has the inner bag chamber, add heat-insulating material and connect in the inner bag chamber, the outlet pipe joins in marriage and connects in the inner bag, and have the delivery channel who feeds through between inner bag chamber and outside, every delivery channel is opened and close to every change over switch controlled, wherein, every inner bag subassembly has the delivery state that the heat-insulating material closed and change over switch opened, and the heating state that heat-insulating material started and change over switch closed, when at least one was in the delivery state in all inner bag subassemblies, at least one among all the other inner bag subassemblies is in the heating state. The utility model provides a hot water system can also supply hot water in a large number in the protection against electric shock.

Description

Water heating device

Technical Field

The utility model relates to the technical field of household appliances, especially, relate to a water heating device.

Background

With the development of the household appliance technology field, the water heating device has been widely applied to the life of people. In the conventional water heating apparatus, an insulated water path is formed by using water resistance or a power supply is cut off to prevent electric leakage. However, the method of forming the insulated water path by using water resistance still has the electric shock hazard, and the method of cutting off the power supply cannot supply hot water in time when the amount of the hot water is large. Therefore, how to supply a large amount of hot water while preventing electric shock becomes an urgent problem to be solved.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a hot water apparatus capable of supplying a large amount of hot water while preventing electric shock.

A water heating apparatus, comprising:

at least two inner bag subassemblies, every the inner bag subassembly includes:

a liner having a liner cavity;

the heating element is matched and connected with the inner container cavity; and

the water outlet pipe is connected with the inner container in a matching mode and is provided with a water outlet channel communicated between the inner container cavity and the outside; and

at least two change-over switches, wherein each change-over switch is controlled to open and close each water outlet channel;

each inner container component is provided with a water outlet state in which the heating element is closed and the change-over switch is opened and a heating state in which the heating element is started and the change-over switch is closed;

when at least one of the inner container assemblies is in the water outlet state, at least one of the other inner container assemblies is in the heating state.

In one embodiment, the liner assembly further comprises a collecting pipe, the collecting pipe is provided with a collecting channel, and the water outlet channels in the liner assemblies are all intersected with the collecting channel and are all communicated with the outside through the collecting channel.

In one embodiment, the confluence passage has a confluence part, and the water outlet passages in each liner assembly are intersected at the confluence part.

In one embodiment, all the switches are combined to form a water supply valve, and the water supply valve is disposed at the confluence portion.

In one embodiment, each of the liner assemblies further comprises a water inlet pipe, each of the water inlet pipes is provided with a water inlet channel, and in each of the liner assemblies, the water inlet channels are communicated between the liner cavity and a water source.

In one embodiment, the water conveying device further comprises a water conveying pipe, the water conveying pipe is provided with a water conveying channel, and the water inlet channels in the liner assemblies are all intersected with the water conveying channel and are all communicated with a water source through the water conveying channel.

In one embodiment, the water delivery channel has a water delivery part, and the water inlet channel in each inner container assembly is intersected with the water delivery part.

In one embodiment, the water inlet valve is connected to the water delivery part and provided with at least two opening and closing ends, and each opening and closing end is controlled to open and close each water inlet channel.

In one embodiment, each liner assembly further comprises a liquid level detection piece, the liquid level detection piece is contained in the liner cavity and used for detecting a liquid level value in the liner cavity, and the opening and closing end corresponding to the liner assembly is configured to be opened when the liquid level value is lower than a preset value.

In one embodiment, each of the liner assemblies further includes a temperature detecting element coupled in the liner cavity and used for detecting a temperature value in the liner cavity, and the heating element is configured to be turned on when the temperature value is lower than a minimum value of a preset temperature range and turned off when the temperature value is higher than a maximum value of the preset temperature range

In the water heating device, when the inner container component is in a water outlet state, the switch is switched on and the heating element is switched off, so that the inner container component can supply hot water for the outside and can prevent electric leakage; when the inner container assembly is in a heating state, the change-over switch is turned off and the heating element is started, so that the inner container assembly can be used for heating and storing water, and after the heating is finished, the inner container assembly can be switched to a water outlet state and used for supplying hot water. Therefore, by arranging at least two inner container assemblies, when at least one of the inner container assemblies is used for supplying hot water, at least another inner container assembly is used for heating and storing water, so that a large amount of hot water can be supplied conveniently, and the inner container assemblies in the heating state and the water outlet state are different, so that electric shock can be prevented.

Drawings

Fig. 1 is a schematic structural diagram of a water heating apparatus according to an embodiment of the present invention.

Reference numerals:

100. a hot water device; 10. a liner assembly; 11. an inner container; 112. a liner cavity; 12. a heating member; 13. A water outlet pipe; 132. a water outlet channel; 14. a water inlet pipe; 141. a water inlet channel; 20. a water supply valve; 21. a switch; 30. a collector pipe; 31. a confluence passage; 40. a water delivery pipe; 41. a water delivery channel; 50. a water inlet valve; 51. a starting end and a closing end; 60. a liquid level detection member; 70. a temperature detection member; 80. a housing; 81. an accommodating cavity.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1, the present application provides a water heating apparatus 100 for supplying hot water, the water heating apparatus 100 includes at least two liner assemblies 10 and at least two switches 21, each liner assembly 10 includes a liner 11, a heating element 12 and a water outlet pipe 13, the liner 11 has a liner cavity 112 for storing water, the heating element 12 is coupled in the liner cavity 112 and is used for heating and storing water, the water outlet pipe 13 is coupled in the liner 11 and has a water outlet channel 132 communicated between the liner cavity 112 and the outside, and each switch 21 is controlled to open and close each water outlet channel 132. That is, the number of the switches 21 is the same as the number of the water outlet channels 132, each switch 21 corresponds to one water outlet channel 132, and different switches 21 correspond to different water outlet channels 132. The switch 21 is turned on, the corresponding water outlet channel 132 is turned on, the inner container assembly 10 can be used for supplying hot water, the switch 21 is turned off, the corresponding water outlet channel 132 is turned off, and the inner container assembly 10 can be used for storing water.

Wherein, each inner container assembly 10 has a water outlet state and a heating state, when the inner container assembly is in the water outlet state, the heating member 12 is closed and the switch 21 is opened, the hot water stored in the inner container cavity 112 can flow to the outside through the water outlet channel 132 to supply the hot water for the user, and because the heating member 12 is closed, the electric leakage can be prevented; when the liner assembly 10 is in a heating state, the heating element 12 is turned on and the switch 21 is turned off, the liner assembly 10 can be used for heating and storing water, and after the heating is finished, the liner assembly 10 can be switched to a water outlet state and used for supplying hot water.

When at least one of the inner container assemblies 10 is in a water outlet state, at least one of the other inner container assemblies 10 is in a heating state. Therefore, after the hot water in at least one inner container assembly 10 is completely supplied, at least one of the other inner container assemblies 10 can be switched from the heating state to the water outlet state, so that the water heating device 100 can supply a large amount of hot water, and because the heating state and the water outlet state of each inner container assembly 10 are separated, the inner container assemblies 10 can be prevented from electric leakage while supplying hot water, thereby having better electric shock prevention effect. It should be noted that, when the inner container assembly 10 is switched from the heating state to the water outlet state, the temperature of the water stored in the inner container assembly 10 should be within the preset temperature range satisfying the requirement. In addition, in this application, the opening and closing of the at least two water outlet channels 132 in the at least two liner assemblies 10 can be realized by arranging the single water supply valve 20, so that not only can the manufacturing cost of the water heating device 100 be reduced, but also the assembly difficulty and the operation efficiency of the water heating device 100 can be effectively improved.

Specifically, if the liner is made of a material without a heat preservation effect, when the liner assembly is in a heating state, the heating element should be continuously turned on to raise the temperature of the stored water to the maximum value of a preset temperature range, and then the liner assembly is switched to a water supply state; if the inner bag is by the material preparation shaping that possesses the heat preservation effect, then the heating state includes heating stage and heat preservation stage, and when the inner bag subassembly is in the heating state, the heating member should be for being interrupted the start, when the inner bag subassembly is in the heating stage, the heating member starts, in order to rise the temperature of water storage to the maximum value of predetermineeing the temperature range, then, the heating member is closed, the inner bag subassembly switches to the heat preservation stage by the heating stage, the temperature of water storage is maintained in predetermineeing the temperature range, along with the heating member does not start for a long time, if the water storage temperature that is in under the heat preservation state reduces gradually when predetermineeing the alert value in the temperature range, the heating member restarts, and with the water storage reheat to the maximum value of predetermineeing the temperature range. It is understood that the maximum value > the warning value > the minimum value of the preset temperature range.

In addition, when the liner assembly 10 is in a heating state, water can be added into the liner cavity 112 of the liner assembly 10 to prevent dry burning. Taking two inner container assemblies 10 as an example, after the hot water device 100 is started, one of the inner container assemblies 10 is switched to a heating state, and is switched to a water outlet state after the temperature of the stored water therein is increased to the maximum value of the preset temperature range, and meanwhile, the other inner container assembly 10 is switched to the heating state; when the liquid level value in one of the liner assemblies 10 is lower than the preset value and/or the temperature in the liner cavity 112 is lower than the minimum value of the preset temperature range, one of the liner assemblies 10 is switched to the heating state from the water outlet state, water can be added into the liner cavity 112 of the liner assembly 10 until the liquid level value in the liner cavity 112 reaches the preset value while the heating element 12 is started, and meanwhile, the other liner assembly 10 is switched to the water outlet state.

Of course, in some other embodiments, after the hot water apparatus 100 is started, the two inner containers may also be switched to the heating state at the same time, and after the temperature of the stored water in the two inner containers 10 is increased to the maximum value of the preset temperature range, one of the inner containers 10 is switched to the water outlet state, and the other inner container 10 is maintained in the heat preservation stage or the heating stage of the heating state; when the level value of one of the liner assemblies 10 is lower than the preset value and/or the temperature in the liner cavity 112 is lower than the minimum value of the preset temperature range, one of the liner assemblies 10 is switched from the water outlet state to the heating state, and at the same time, the other liner assembly 10 is switched to the water outlet state.

Each bladder assembly 10 also has an off state in which the switch 21 and the heating member 12 are off. Since the inner container assemblies 10 are switched to the heating state to add water when the water amount of each inner container assembly 10 is insufficient, the inner container assemblies 10 in the closed state have sufficient water amount. If the number of the inner container assemblies 10 is three or more, at least two inner container assemblies 10 can be in a heating state and the rest are in a water outlet state at the same time, or at least two inner container assemblies 10 can be in a water outlet state at the same time and the rest are in a heating state, or at least one inner container assembly can be in a water outlet state, at least one inner container assembly is in a heating state and at least one inner container assembly is in a closing state, and the specific setting can be set according to the requirements of users. The following embodiments will describe the specific structure of the water heating apparatus 100 in detail with two bladder assemblies 10 as examples.

The water heating apparatus 100 further comprises a collecting pipe 30, the collecting pipe 30 has a collecting channel 31, and the water outlet channels 132 in each liner assembly 10 are all intersected with the collecting channel 31 and are all communicated with the outside through the collecting channel 31. Specifically, when each liner assembly 10 is switched to the water outlet state, the hot water in the liner cavity 112 flows to the outside through the confluence channel 31. Through setting up the collecting pipe 30 to set up the passageway 31 that converges in the collecting pipe 30, consequently, the hot water in any inner bag subassembly 10 all can flow out from fixed passageway 31 that converges to the convenience of customers takes.

Specifically, the confluence channel 31 has a confluence portion, and the water outlet channels 132 in each liner assembly 10 are all intersected with the confluence portion, so that compared with the intersection of at least two different positions of the water outlet channels 132 in at least two liner assemblies 10 and the confluence channel 31, the intersection manner is simpler and easier to operate, and the assembly efficiency of the water heating device 100 is improved. In addition, the arrangement can effectively improve the compactness of the structure of the hot water device 100. Specifically, the confluence portion is formed inside one end of the confluence pipe 30 away from the outside, the water outlet channel 132 in each liner assembly 10 is intersected with the confluence portion, and one end of the water outlet pipe 13 in each liner assembly 10 away from the liner 11 assembled with the same is intersected with one end of the confluence pipe 30 away from the outside.

Further, all the switches 21 are combined to form one water supply valve 20, and the water supply valve 20 is provided at the confluence portion. The control of all the water outlet passages 132 is achieved by providing a single water supply valve 20, compared to the case where the switch 21 is installed in the water outlet passage 132 corresponding thereto, thus facilitating the improvement of the installation efficiency of the hot water apparatus 100. Alternatively, the water supply valve 20 may be a ball valve, a pommel valve or other valves. Specifically, the switch 21 is turned on, and the hot water in the inner container assembly 10 corresponding to the switch can flow into the outside through the water outlet channel 132 and the confluence channel 31 to supply water; the switch 21 is turned off, and the inner container cavity 112 of the inner container assembly 10 corresponding to the switch is isolated from the outside, so as to store water conveniently.

It should be noted that, in some other embodiments, the switch 21 may also be a single control valve, and each control valve is independent from each other and controls the water outlet channel 132 corresponding to the control valve separately.

Each liner assembly 10 further includes a water inlet pipe 14, each water inlet pipe 14 has a water inlet passage 141, and in each liner assembly 10, the water inlet passage 141 is communicated between the liner cavity 112 and a water source. It can be understood that when the level value in the liner cavity 112 is lower than the preset value, the water flow of the water source can flow into the liner cavity 112 communicated with the water inlet channel 141 through the water inlet channel 141, so as to add water to the liner cavity 112.

Further, the water heating device 100 further comprises a water conveying pipe 40, the water conveying pipe 40 is provided with a water conveying channel 41, and the water inlet channels 141 in each liner assembly 10 are all intersected with the water conveying channel 41 and are all communicated with a water source through the water conveying channel 41. Specifically, water from the water source flows into the inner bladder cavity 112 through the water delivery passage 41, where the level value is lower than a preset value. Through setting up raceway 40, can add water to two at least inner bag chambeies 112 in two at least inner bag subassemblies 10 through raceway 40 and water source intercommunication to make hot water system 100's the structure of setting up simpler, assembly efficiency is higher.

Further, the water supply passage 41 has a water supply part where the water inlet passages 141 of each bladder assembly 10 meet. Thus, compared to the intersection of at least two different positions of the at least two water inlet channels 141 and the at least two different positions of the water delivery channel 41 in the at least two liner assemblies 10, the intersection manner is simpler and easier to operate, which is convenient to further improve the assembly efficiency of the water heating apparatus 100. In addition, the arrangement can effectively improve the compactness of the structure of the hot water device 100.

Further, the water heating apparatus 100 further comprises a water inlet valve 50, the water inlet valve 50 is coupled to the water supply portion, and the water inlet valve 50 has at least two open/close ends 51, and each open/close end 51 is controlled to open and close each water inlet channel 141. Specifically, the number of the opening and closing ends 51 is the same as that of the water inlet channels 141, and the opening and closing ends 51 are in one-to-one correspondence, and each opening and closing end 51 is controlled to open and close the water inlet channel 141 corresponding to the opening and closing end. The opening and closing end 51 is opened, and water flows into the inner container cavity 112 corresponding to the opening and closing end 51 through the water delivery channel 41 and the water inlet channel 141; the opening and closing end 51 is closed, and the water flow is blocked outside the inner container cavity 112 of the inner container assembly 10 corresponding to the opening and closing end 51. The opening and closing of the at least two water inlet channels 141 in the at least two liner assemblies 10 can be realized by arranging a single water inlet valve 50, so that the manufacturing cost of the water heating device 100 can be reduced, and the assembly difficulty and the operation efficiency of the water heating device 100 can be effectively improved. Alternatively, the inlet valve 50 may be a ball valve, a popple valve, or other valve.

Specifically, when each opening/closing end 51 is opened, the corresponding liner assembly 10 is in a heating state, so that the heating efficiency of the liner assembly 10 can be effectively improved. When the liquid level value in the inner container cavity 112 reaches a preset value, the opening and closing end 51 is closed, and the water inlet of the inner container assembly 10 is stopped. It can be understood that, when the liner assembly 10 is in the heating state, whether the open/close end 51 is opened or not is determined by the level value in the liner cavity 112.

Each liner assembly 10 further comprises a liquid level detection piece 60, in each liner assembly 10, the liquid level detection piece 60 is accommodated in the liner cavity 112 and used for detecting the liquid level value in the liner cavity 112, and the opening and closing end 51 corresponding to the liner assembly 10 is configured to be opened when the liquid level value is lower than a preset value. Through setting up liquid level detection spare 60, can be convenient for the user in time know the liquid level value in the inner bag chamber 112 in every inner bag subassembly 10, can be convenient for the user in time add water to prevent dry combustion method.

Optionally, the number of the liquid level detection members 60 in each liner assembly 10 may be one or more, preferably multiple, and the multiple liquid level detection members 60 are distributed at multiple different positions in the liner cavity 112 corresponding thereto, so that the accuracy of water level detection can be effectively improved.

Each liner assembly 10 further includes a temperature sensing member 70, and in each liner assembly 10, the temperature sensing member 70 is coupled within the liner cavity 112 and is configured to sense a temperature value within the liner cavity 112, and the heating member 12 is configured to be activated when the temperature value is less than a minimum value of a preset temperature range and to be deactivated when the temperature value is greater than a maximum value of the preset temperature range. By providing the temperature detecting member 70, the user can know the temperature value in the liner cavity 112 of each liner assembly 10 in time, so that the user can start or stop the heating element 12 in time.

The opening and closing of the heating member 12, the outlet valve, the inlet valve 50, the liquid level detector 60, and the temperature detector 70 when each of the bladder assemblies 10 is in different states will be described in detail below. When the liner assembly 10 is in the closed state, the heating element 12, each switch 21 in the outlet valve 20, each open/close end 51 in the inlet valve 50, the liquid level detecting element 60 and the temperature detecting element 70 are all closed; when the inner container assembly 10 is switched from the closed state to the heating state, the heating element 12, the liquid level detecting element 60 and the temperature detecting element 70 in the inner container assembly 10 are all turned on, and the switch 21 and the on-off end 51 corresponding to the inner container assembly 10 are all turned off; when the inner container assembly 10 is switched from the water outlet state to the heating state, the heating element 12, the liquid level detection element 60 and the temperature detection element 70 in the inner container assembly 10 are all turned on, the switch 21 corresponding to the inner container assembly 10 is turned off, and the opening and closing end 51 corresponding to the inner container assembly 10 is kept on until the liquid level value reaches a preset value; when the liner assembly 10 is in a water outlet state, the heating element 12 in the liner assembly 10 is turned off, the liquid level detection element 60 and the temperature detection element 70 are all turned on, the switch 21 corresponding to the liner assembly 10 is turned on, and the opening and closing end 51 corresponding to the liner assembly 10 is turned off.

The water heater 100 further includes a control element (not shown) electrically connected to the heating element 12, the outlet valve, the inlet valve 50, the liquid level detector 60 and the temperature detector 70, wherein the control element is used to control the heating element 12, the outlet valve, the inlet valve 50, the liquid level detector 60 and the temperature detector 70 to be opened and closed automatically, so that the water heater 100 has the characteristics of automation and intelligence.

The level value water heating device 100 further comprises a housing 80, the housing 80 has at least two accommodating cavities 81, any two accommodating cavities 81 are independent and isolated from each other, the at least two accommodating cavities 81 correspond to the at least two liner assemblies 10 one by one, and the liner 11 in each liner assembly 10 is accommodated in the corresponding accommodating cavity 81. Therefore, the liner 11 of each liner assembly 10 can be protected in the corresponding accommodating cavity 81 to prevent the liner 11 from being damaged. Specifically, to prevent the housing 80 from leaking electricity and burning the user when the heating element 12 is heated, the housing 80 is formed of a material having a good insulating property and a poor heat-conducting property.

In the water heating apparatus 100, when the inner container assembly 10 is in the water outlet state, the switch 21 is turned on and the heating member 12 is turned off, so that the inner container assembly 10 can supply hot water to the outside and prevent electric leakage; when the liner assembly 10 is in the heating state, the switch 21 is turned off and the heating element 12 is turned on, so that the liner assembly 10 is used for heating and storing water, and after the heating is completed, the liner assembly 10 can be switched to the water outlet state and used for supplying hot water. Therefore, by arranging at least two inner container assemblies 10, when at least one of the inner container assemblies is used for supplying hot water, at least another inner container assembly 10 can be used for heating and storing water so as to realize large-amount supply of hot water, and the heating state is different from the water outlet state of the inner container assembly 10, so that electric shock can be prevented.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A water heating apparatus, characterized in that the water heating apparatus comprises:

at least two liner assemblies (10), each of the liner assemblies (10) comprising:

a liner (11) having a liner cavity (112);

a heating element (12) coupled to the inner chamber (112); and

the water outlet pipe (13) is connected with the inner container (11) in a matching mode and is provided with a water outlet channel (132) communicated between the inner container cavity (112) and the outside; and

at least two change-over switches (21), wherein each change-over switch (21) is controlled to open and close each water outlet channel (132);

wherein each liner component (10) has a water outlet state that the heating element (12) is closed and the switch (21) is opened, and a heating state that the heating element (12) is started and the switch (21) is closed;

when at least one of all the inner container assemblies (10) is in the water outlet state, at least one of the other inner container assemblies (10) is in the heating state.

2. The water heating device according to claim 1, further comprising a manifold pipe (30), wherein the manifold pipe (30) is provided with a manifold channel (31), and the water outlet channels (132) in each liner assembly (10) are intersected with the manifold channel (31) and communicated with the outside through the manifold channel (31).

3. The water heating apparatus according to claim 2, wherein the confluence passage (31) has a confluence portion where the outlet passages (132) of each of the bladder assemblies (10) meet.

4. A hot water apparatus according to claim 3, characterized in that all the change-over switches (21) are combined to form one water supply valve (20), the water supply valve (20) being provided at the confluence.

5. The hot water device according to claim 1, wherein each of the liner assemblies (10) further comprises a water inlet pipe (14), each of the water inlet pipes (14) having a water inlet passage (141), the water inlet passage (141) communicating between the liner chamber (112) and a water source in each of the liner assemblies (10).

6. The water heating device according to claim 5, further comprising a water pipe (40), wherein the water pipe (40) has a water conveying channel (41), and the water inlet channels (141) of each liner assembly (10) are intersected with the water conveying channel (41) and communicated with a water source through the water conveying channel (41).

7. The water heating apparatus of claim 6, wherein the water delivery passage (41) has a water delivery portion where the water inlet passage (141) in each bladder assembly (10) meets.

8. The water heater according to claim 7, further comprising a water inlet valve (50), wherein the water inlet valve (50) is coupled to the water supply portion, and the water inlet valve (50) has at least two open/close ends (51), and each open/close end (51) is controlled to open/close each water inlet channel (141).

9. The water heater according to claim 8, wherein each of the bladder assemblies (10) further comprises a liquid level detection member (60), the liquid level detection member (60) being received in the bladder cavity (112) and being configured to detect a level value in the bladder cavity (112), the opening/closing end (51) corresponding to the bladder assembly (10) being configured to open when the level value is lower than a preset value.

10. The water heating apparatus according to claim 1, wherein each of the inner container assemblies (10) further comprises a temperature detecting member (70), the temperature detecting member (70) is coupled to the inner container cavity (112) and is configured to detect a temperature value in the inner container cavity (112), and the heating member (12) is configured to be activated when the temperature value is lower than a minimum value of a preset temperature range and to be deactivated when the temperature value is higher than a maximum value of the preset temperature range.

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