CN222560271U - Hot water conversion device and water heater - Google Patents

Abstract

The utility model discloses a hot water conversion device and a water heater, wherein the hot water conversion device comprises a water tank, a liner is arranged in the water tank, a water inlet and a water outlet are formed in the liner, a heating element is arranged in the liner and used for heating water in the liner, the hot water connector is selectively communicated with the water inlet or the hot water connector, and the hot water connector is communicated with the cold water connector and the water outlet. When in shower in summer, the hot water joint is communicated with the warm water joint, the hot water is directly mixed with the cold water from the cold water joint to obtain warm water with constant temperature for the user to use, and the user experience is promoted.

Description

Hot water conversion device and water heater

Technical Field

The utility model belongs to the technical field of water heaters, and particularly relates to a hot water conversion device and a water heater.

Background

At present, water heaters are household appliances commonly used in daily life of people, and are classified into electric water heaters, gas water heaters, heat pump water heaters, solar water heaters and the like. The gas water heater generally comprises a shell, a burner, a heat exchanger and other parts, wherein the burner, the heat exchanger and other parts are arranged in the shell, a water inlet pipe and a water outlet pipe are arranged on the shell and are connected with the heat exchanger, and hot water can be output from the water outlet pipe after cold water entering from the water inlet pipe is heated by the heat exchanger. However, many users have a long distance from the installation position of the water heater to the end bath point, and the user needs to release a section of cold water before taking out hot water in winter, so that the waiting time of the user is too long.

The prior Chinese patent with the application number 202221615127.0 discloses a zero-cold water supply system which comprises a hot water supply device, a first water tank, a second water tank, a pressurizing piece and a pressurizing piece, wherein a water inlet of the first water tank is communicated with a hot water outlet of the hot water supply device, a water outlet of the first water tank is communicated with a water outlet device, a heating piece is arranged in the first water tank, a water inlet of the second water tank is communicated with the water outlet device, a pipeline between a water outlet of the first water tank and the water outlet device is communicated with a pipeline between the water inlet of the second water tank and the water outlet device, and the pressurizing piece is arranged in a pipeline between the water outlet of the first water tank and the water outlet device or a pipeline between the water inlet of the second water tank and the water outlet device.

The water supply system presses water in the pipeline between the water outlet of the first water tank and the water outlet device and the pipeline between the water inlet of the second water tank and the water outlet device into the second water tank through the pressurizing piece, so that cold water cannot remain in the pipeline. Because in the south area, the running water temperature is higher in summer, the water heater can be used for washing with a bath uncomfortable due to high water outlet temperature, the water temperature of the shower outlet is unstable when the shower is turned on and off, and therefore the user experience is poor. In view of this, how to design a water heater technology with good user experience and stable water outlet temperature is a technical problem to be solved by the utility model.

Disclosure of Invention

The utility model provides a hot water conversion device and a water heater, which realize stable water outlet temperature and improve user experience.

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

In a first aspect, the present utility model provides a hot water conversion device comprising a water tank provided with a hot water joint, a warm water joint and a cold water joint;

The inner container is positioned in the water tank and is provided with a water inlet and a water outlet;

the heating piece is arranged in the inner container and is used for heating water in the inner container;

The hot water joint is selectively communicated with the water inlet or the warm water joint, and the warm water joint is communicated with the cold water joint and the water outlet.

In some embodiments of the application, the hot water conversion device further comprises:

the first reversing valve is arranged in the water tank and is positioned at the outer side of the inner container, an inlet of the first reversing valve is communicated with the hot water joint, an outlet of the first reversing valve is communicated with the water inlet, and the other outlet of the first reversing valve is communicated with the warm water joint.

Through setting up first switching-over valve in the water tank, the import and the hot water joint intercommunication of first switching-over valve, an export and the water inlet intercommunication of first switching-over valve, another export and the warm water joint intercommunication of first switching-over valve, the hot water joint of being convenient for like this is through first switching-over valve and water inlet or warm water joint intercommunication selectively.

In some embodiments of the application, the hot water conversion device further comprises:

The first pipeline is connected between the hot water joint and the first reversing valve;

The temperature sensor is arranged on the first pipeline and used for detecting the water temperature in the first pipeline.

Through setting up first pipeline and temperature sensor, first pipeline is connected between hot water joint and first switching-over valve, and temperature sensor sets up on first pipeline, is convenient for detect the temperature of the water from hot water joint.

In some embodiments of the application, the first reversing valve comprises a three-way valve.

By arranging the three-way valve, the trend of water flow is convenient to control.

In some embodiments of the application, the hot water conversion device further comprises:

the second reversing valve is arranged in the water tank and is positioned at the outer side of the inner container, an outlet of the second reversing valve is communicated with the warm water joint, an inlet of the second reversing valve is communicated with the cold water joint, and the other inlet of the second reversing valve is respectively communicated with the water outlet and the first reversing valve.

Through setting up the second switching-over valve in the water tank, the export and the warm water joint intercommunication of second switching-over valve, an import and the cold water joint intercommunication of second switching-over valve, the other import of second switching-over valve communicates with delivery port and first switching-over valve respectively, and the second switching-over valve of being convenient for mixes cold water and hot water like this, guarantees the invariable of play water temperature.

In some embodiments of the application, the second reversing valve comprises a thermostatic valve.

Through setting up the thermostatic valve, the control of being convenient for goes out water temperature, avoids the temperature too high or too low, takes place scald and uncomfortable when preventing the user to use.

In some embodiments of the application, the hot water conversion device further comprises:

the second pipeline is connected between the second reversing valve and the water outlet;

the switch valve is arranged on the second pipeline and used for controlling the on-off of the second pipeline.

Through setting up second pipeline and ooff valve, second pipeline is connected between second switching-over valve and delivery port, and the ooff valve sets up in the second pipeline, is convenient for control the break-make of second pipeline.

In some embodiments of the application, the on-off valve comprises a one-way valve.

By arranging the one-way valve, the one-way valve can ensure that water flows from the water outlet to the direction of the second reversing valve, and the water is prevented from flowing backwards.

In some embodiments of the application, a thermal insulation material is filled between the liner and the water tank.

The heat insulation material is filled between the inner container and the water tank, so that the heat insulation of water in the inner container is facilitated, and the heat dissipation of the water in the inner container is reduced.

In a second aspect, the present utility model provides a water heater comprising:

The shell is also provided with a water inlet pipe and a water outlet pipe which extend to the outside;

the heat exchanger is arranged in the shell and is used for heating water, and the water inlet pipe and the water outlet pipe are respectively connected with the heat exchanger to form a heating water flow path;

The hot water conversion device of any one of the embodiments of the first aspect above, wherein a hot water connector is in communication with the outlet pipe.

Compared with the prior art, the shower head has the advantages that the water tank, the inner container and the heating piece are arranged, the hot water connector, the warm water connector and the cold water connector are arranged on the water tank, the inner container is arranged in the water tank, the water inlet and the water outlet are formed in the inner container, the hot water connector is selectively communicated with the water inlet or the warm water connector, the warm water connector is communicated with the cold water connector and the water outlet, when a user takes a shower in winter, the hot water connector is communicated with the water inlet, cold water in a pipeline between a water outlet pipe of the water heater and the hot water connector flows into the inner container through the hot water connector and the water inlet, the heating piece heats water in the inner container, the heated water is mixed with cold water from the cold water connector to obtain warm water with constant temperature for the user, when the user takes a shower in summer, the hot water from the water outlet pipe of the water heater is directly mixed with the cold water from the cold water connector to obtain warm water with constant temperature for the user to use, the constant temperature of the water outlet is ensured, and the user experience is facilitated to be improved.

Drawings

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

FIG. 1 is a schematic diagram of a hot water converting apparatus according to an embodiment of the present utility model;

FIG. 2 is a schematic view of another embodiment of a hot water converting apparatus according to the present utility model;

Fig. 3 is a schematic structural diagram of another embodiment of a hot water converting apparatus according to the present utility model.

Reference numerals illustrate:

1. the water tank, the hot water joint, the 12, the warm water joint, the 13, the cold water joint;

2. 21 parts of inner container, 21 parts of water inlet, 22 parts of water outlet, 23 parts of heating element;

3. a first reversing valve;

4. 41, a temperature sensor;

5. A second reversing valve;

6. The second pipeline, 61, the on-off valve;

7. a water inlet pipe;

8. A drain pipe;

9. And a third pipeline.

Detailed Description

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

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

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

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

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

The gas water heater adopts gas as main energy material, and the high temperature heat generated by combustion of the gas is transferred to cold water flowing through a heat exchanger to achieve the purpose of preparing hot water.

Gas water heaters typically include a housing, and a burner, heat exchanger, fan, and fan housing disposed within the housing.

The gas is conveyed to the burner, and is ignited by the ignition device, so that the burner combusts the conveyed gas, and heat is further generated.

The heat exchanger is internally provided with a heat exchange tube, one end of the heat exchange tube is communicated with a water supply pipeline, and the other end of the heat exchange tube is communicated with a shower head or a tap.

The heat generated by the combustion of the fuel gas by the burner is used for heating the heat exchange tube so as to raise the water temperature in the heat exchange tube to form hot water.

When the gas water heater works, cold water provided by the water supply pipeline flows into the heat exchange pipe, is heated into hot water by the heating source generated by the burner, and flows out of the shower head or the water tap through the hot water valve for users to use.

Meanwhile, in the operation of the gas water heater, the fans are electrified and run simultaneously, and under the action of the fans, the flue gas generated by the burner is discharged outdoors.

In a first aspect, as shown in connection with figures 1 to 3, the present utility model provides a hot water diversion apparatus adapted to be installed in a user's home in a bathroom adjacent to a shower. The hot water converting apparatus includes a water tank 1, a liner 2, and a heating member 23.

As shown in fig. 1, the water tank 1 is provided with a hot water joint 11, a warm water joint 12 and a cold water joint 13, wherein the hot water joint 11 is connected with a hot water supply device through a pipeline, the hot water supply device can continuously supply hot water, the hot water supply device is arranged outside the water tank 1, the hot water supply device can be a gas water heater, a solar water heater, an electric water heater and an air energy water heater, and the hot water supply device is preferably a household gas water heater. The warm water joint 12 is connected to a water terminal such as a tap or a shower in a bathroom, etc. through a pipe to supply warm water to the water terminal, and the cold water joint 13 is connected to a tap water supply terminal through a pipe.

The inner container 2 is positioned in the water tank 1, a water inlet 21 and a water outlet 22 are arranged on the inner container 2, the inner container 2 is a container body with a certain capacity, the shape of the inner container 2 can be set according to actual needs, a water inlet pipe 7 is connected with the water inlet 21 inside the inner container 2, the water inlet pipe 7 stretches into the bottom of the inner container 2 and is close to a heating piece 23 for conveying cold water to the inner container 2, a water outlet 8 is connected with the inner container 2 and the water outlet 22, and the water outlet 8 stretches into the upper portion of the inner container 2 for outputting hot water in the inner container 2. It will be appreciated that the end of the drain pipe 8 is higher than the end of the inlet pipe 7,

In order to heat the water stored in the inner container 2, the inner container 2 is provided with a heating element 23, and the heating element 23 is mounted on the inner wall of the inner container 2 and at a position relatively lower than the inner wall so as to effectively heat the water in the inner container 2, and specifically, the heating element 23 may be an electric heating tube or an electric heating wire.

The hot water connection 11 is selectively communicated with the water inlet 21 or the warm water connection 12, and the warm water connection 12 is communicated with the cold water connection 13 and the water outlet 22.

Specifically, the water tank 1, the inner container 2 and the heating piece 23 are arranged, the water tank 1 is provided with the hot water joint 11, the warm water joint 12 and the cold water joint 13, the inner container 2 is arranged in the water tank 1, the inner container 2 is provided with the water inlet 21 and the water outlet 22, the hot water joint 11 is selectively communicated with the water inlet 21 or the warm water joint 12, the warm water joint 12 is communicated with the cold water joint 13 and the water outlet 22, when a user takes a shower in winter, the hot water joint 11 is communicated with the water inlet 21, cold water in a pipeline from a water outlet pipe of the gas water heater to the hot water joint 11 flows into the inner container 2 through the hot water joint 11 and the water inlet 21, the heating piece 23 is electrified to heat water in the inner container 2, the heated water is mixed with the cold water from the cold water joint 13 to obtain warm water with constant temperature for the user, and when the user takes a shower in summer, the hot water joint 11 is directly mixed with the cold water from the water outlet pipe of the gas water heater to obtain warm water with constant temperature for the user to use, the constant temperature of the water outlet is ensured, and the user experience is favorable for improving.

Specifically, the hot water joint 11 is selectively communicated with the water inlet 21 and the warm water joint 12, when the hot water joint 11 is communicated with the water inlet 21, hot water from the gas water heater enters the inner container 2 in the water tank 1 through the hot water joint 11 and the water inlet 21, the heating piece 23 in the inner container 2 heats water in the inner container 2, when the hot water joint 11 is communicated with the warm water joint 12, the hot water from the gas water heater flows out of the warm water joint 12 through the hot water joint 11 and is not heated by the inner container 2, and the warm water joint 12 is communicated with the cold water joint 13 and the water outlet 22, so that water in the inner container 2 and water in the cold water joint 13 can flow into the warm water joint 12 conveniently.

In some embodiments of the application, the hot water conversion device further comprises a first reversing valve 3.

The first reversing valve 3 is arranged in the water tank 1 and is positioned at the outer side of the liner 2, an inlet of the first reversing valve 3 is communicated with the hot water joint 11, an outlet of the first reversing valve 3 is communicated with the water inlet 21, and the other outlet of the first reversing valve 3 is communicated with the warm water joint 12.

Specifically, by providing the first reversing valve 3 in the water tank 1, the inlet of the first reversing valve 3 is communicated with the hot water joint 11, one outlet of the first reversing valve 3 is communicated with the water inlet 21, and the other outlet of the first reversing valve 3 is communicated with the warm water joint 12, so that hot water enters from the inlet of the first reversing valve 3 and flows out from one outlet or the other outlet of the first reversing valve 3, and the hot water joint 11 is conveniently and selectively communicated with the water inlet 21 or the warm water joint 12 through the first reversing valve 3.

In some embodiments of the application, the hot water conversion device further comprises a first pipe 4 and a temperature sensor 41.

The first pipeline 4 is connected between the hot water joint 11 and the first reversing valve 3;

the temperature sensor 41 is disposed in the first pipe 4, and is configured to detect a water temperature in the first pipe 4. When (when)

Specifically, by setting the first pipeline 4 and the temperature sensor 41, the first pipeline 4 is connected between the hot water connector 11 and the first reversing valve 3, and the temperature sensor 41 is arranged on the first pipeline 4, so that the temperature of water from the hot water connector 11 can be conveniently detected, and a reference is provided for the follow-up control of the trend of hot water.

In some embodiments of the application, the first reversing valve 3 comprises a three-way valve.

Specifically, the three-way valve is arranged to facilitate control of the trend of water flow, when the water temperature is lower than a set value, hot water enters the first reversing valve 3 through the hot water connector 11 and then enters the inner container 2 through the water inlet 21 for heating, and when the water temperature is higher than the set value, hot water does not enter the inner container 2 through the hot water connector 11 and then directly flows to the warm water connector 12.

In some embodiments of the application, the hot water converting device further comprises a second reversing valve 5.

The second reversing valve 5 is arranged in the water tank 1 and is positioned at the outer side of the liner 2, an outlet of the second reversing valve 5 is communicated with the warm water joint 12, an inlet of the second reversing valve 5 is communicated with the cold water joint 13, and the other inlet of the second reversing valve 5 is respectively communicated with the water outlet 22 and the other outlet of the first reversing valve 3.

Specifically, through setting up second switching-over valve 5 in water tank 1, the export and the warm water of second switching-over valve 5 connect 12 intercommunication, the import and the cold water of second switching-over valve 5 connect 13 intercommunication, the another import of second switching-over valve 5 respectively with delivery port 22 and the another export of first switching-over valve 3, so, the one end that is convenient for second switching-over valve 5 can flow in cold water, the other end can flow in hot water, obtain warm water by the export outflow of second switching-over valve 5 after cold water and hot water mix, finally warm water flows from warm water connects 12, be favorable to guaranteeing the stability of play water temperature, avoid the play water temperature too high or too low.

In some embodiments of the application, the second reversing valve 5 comprises a thermostatic valve.

Specifically, a thermostatic valve is arranged in the hot water conversion device, and the hot water and tap water are mixed and then are subjected to constant temperature water outlet. The constant temperature valve can keep the stability of the temperature of the discharged water to provide comfortable use experience, has the effect of energy conservation, and protects the water use safety of users.

In other embodiments of the application, the hot water converting device further comprises a second pipe 6 and an on-off valve 61.

The second pipeline 6 is connected between the second reversing valve 5 and the water outlet 22;

the switch valve 61 is disposed on the second pipeline 6, and is used for controlling on/off of the second pipeline 6.

Specifically, by setting the second pipeline 6 and the switch valve 61, the second pipeline 6 is connected between the second reversing valve 5 and the water outlet 22, and the switch valve 61 is set in the second pipeline 6, so as to control the on-off of the second pipeline 6.

In some embodiments of the application, the hot water converting device further comprises a third conduit 9, said third conduit 9 being connected between the further outlet of the first reversing valve 3 and the further inlet of the second reversing valve 5.

In some embodiments of the application, the on-off valve 61 comprises a one-way valve.

Specifically, by providing a one-way valve, which is also called a check valve, the one-way valve can ensure that water flows from the water outlet 22 towards the second reversing valve 5, thereby avoiding reverse flow of water.

In some embodiments of the present application, a thermal insulation material is filled between the liner 2 and the water tank 1.

Specifically, the heat insulation material is filled between the liner 2 and the water tank 1, so that heat insulation of water in the liner 2 is facilitated, and heat dissipation of water in the liner 2 is reduced.

The insulation material may be, for example, a polyurethane foam material, although the insulation material includes, but is not limited to, the materials described above.

In a second aspect, embodiments of the present disclosure provide a water heater comprising a housing, a heat exchanger and a hot water conversion device as described in any one of the embodiments of the first aspect above.

Taking a gas water heater as an example, the hot water conversion device is suitable for being installed in a bathroom of a user's home and close to a shower.

The inside of the shell forms an installation space, and the shell is also provided with a water inlet pipe and a water outlet pipe which extend to the outside;

The burner is used for burning combustible gas;

The heat exchanger is used for supplying water to flow and heating water by utilizing heat generated by the burner, and the water inlet pipe and the water outlet pipe are respectively connected with the heat exchanger to form a heating water flow path;

The hot water joint 11 is communicated with the water outlet pipe, and the gas water heater provides hot water for the hot water conversion device through the water outlet pipe. The hot water conversion device according to any one of the embodiments of the first aspect has all the advantages thereof, and will not be described again.

In some embodiments of the application, the hot water conversion device operates by flowing hot water from the gas water heater out through the outlet pipe when the user turns on the shower hot water. Cold water in a pipeline between a hot water port of the gas water heater and a hot water point flows into a hot water joint 11 of the hot water conversion device, enters a first pipeline 4 after passing through the hot water joint 11, and a temperature sensor 41 on the first pipeline 4 detects the temperature of the inlet water.

Referring to fig. 2, when the temperature of the incoming water detected by the temperature sensor 41 is lower than a first set temperature (the first set temperature can be set by itself), the incoming water enters the inner container 2 along the water inlet pipe 7 after flowing through the first reversing valve 3, the heating element 23 heats the water in the inner container 2 to be higher than a second set temperature, the water higher than the second set temperature flows through the switch valve 61 and the second reversing valve 5 from the water outlet pipe 8 in the inner container 2, and is mixed with the cold water from the cold water joint 13 at the second reversing valve 5 to obtain constant-temperature hot water (the temperature of the constant-temperature hot water is adjustable according to the user setting), and the constant-temperature hot water flows out for the user through the warm water joint 12.

Referring to fig. 3, when the temperature of the incoming water detected by the temperature sensor 41 is not lower than the first set temperature, the incoming water flows through the first reversing valve 3 and then enters the second reversing valve 5 along the third pipeline 9, and is mixed with cold water from the cold water joint 13 at the second reversing valve 5 to obtain constant-temperature hot water.

The first set temperature is between 30 ℃ and 60 ℃ and the second set temperature is 50 ℃ by way of example. When hot, the setting of the first set temperature and the second set temperature includes, but is not limited to, the above.

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

The above embodiments are only for illustrating the technical solution of the present utility model, but not for limiting the same, and although the present utility model has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that modifications may be made to the technical solution described in the above embodiments or equivalents may be substituted for some of the technical features thereof, and the modifications or substitutions do not depart from the spirit and scope of the technical solution as claimed in the present utility model.

Claims (10)

1. A hot water converting apparatus, comprising:

the water tank is provided with a hot water joint, a warm water joint and a cold water joint;

The inner container is positioned in the water tank and is provided with a water inlet and a water outlet;

the heating piece is arranged in the inner container and is used for heating water in the inner container;

The hot water joint is selectively communicated with the water inlet or the warm water joint, and the warm water joint is communicated with the cold water joint and the water outlet.

2. The hot water converting apparatus according to claim 1, further comprising:

the first reversing valve is arranged in the water tank and is positioned at the outer side of the inner container, an inlet of the first reversing valve is communicated with the hot water joint, an outlet of the first reversing valve is communicated with the water inlet, and the other outlet of the first reversing valve is communicated with the warm water joint.

3. The hot water converting apparatus according to claim 2, further comprising:

The first pipeline is connected between the hot water joint and the first reversing valve;

The temperature sensor is arranged on the first pipeline and used for detecting the water temperature in the first pipeline.

4. The hot water switching device according to claim 2, wherein the first reversing valve comprises a three-way valve.

5. The hot water converting apparatus according to claim 2, further comprising:

the second reversing valve is arranged in the water tank and is positioned at the outer side of the inner container, an outlet of the second reversing valve is communicated with the warm water joint, an inlet of the second reversing valve is communicated with the cold water joint, and the other inlet of the second reversing valve is respectively communicated with the water outlet and the first reversing valve.

6. The hot water switching device of claim 5, wherein the second reversing valve comprises a thermostatic valve.

7. The hot water converting apparatus according to claim 5, further comprising:

the second pipeline is connected between the second reversing valve and the water outlet;

the switch valve is arranged on the second pipeline and used for controlling the on-off of the second pipeline.

8. The hot water converting apparatus according to claim 7, wherein the on-off valve comprises a one-way valve.

9. The hot water converting apparatus according to claim 1, wherein a thermal insulation material is filled between the inner container and the water tank.

10. A water heater, comprising:

the shell is provided with a water inlet pipe and a water outlet pipe which extend to the outside;

the heat exchanger is arranged in the shell and is used for heating water, and the water inlet pipe and the water outlet pipe are respectively connected with the heat exchanger to form a heating water flow path;

a hot water conversion device as claimed in any one of claims 1 to 9 wherein a hot water fitting communicates with the outlet pipe.