Water using device and water heater

Abstract

The utility model provides a water using device and a water heater, the water using device comprises a first water inlet pipeline, a second water inlet pipeline and a third water inlet pipeline, the first water inlet pipeline is connected to a first water outlet pipeline through a heat exchange module, and the first water outlet pipeline is used for outputting hot water; the second water inlet pipeline is connected to a second water outlet pipeline through the heat exchange module, and the second water outlet pipeline is used for outputting steam; the third water inlet pipeline is further connected to a third water outlet pipeline through a heating module, and the third water outlet pipeline is used for outputting hot water heated by the heating module; the water outlet end of the heating module is further connected to the heat mass water inlet end of the heat exchange module, and the heat mass water outlet end of the heat exchange module is connected to the water inlet end of the heating module. The first water inlet pipeline and the second water inlet pipeline are both connected to the heat exchange water inlet end of the heat exchange module, and the first water outlet pipeline and the second water outlet pipeline are both connected to the heat exchange water outlet end of the heat exchange module.

Description

Technical Field

[0001] The present disclosure relates to the field of water treatment equipment, and in particular to a water-using device and a water heater. Background Art

[0002] The water-using devices in the prior art usually heat cold water directly for drinking by users. The heated water is usually hot or takes a long time to heat. Or the cold water is usually purified to a standard that can be directly drunk by users. It cannot provide warm water that can be directly drunk. If users need warm water that can be directly drunk, they need to purchase a hot water dispenser separately.

[0003] In addition, existing steam-providing devices on the market, such as household steam cleaners, not only have limited steam output, but also during use, as the water in the water tank of the household steam cleaner continues to decrease and the air increases, the steam output will also decrease, and the steam cannot be maintained at a stable value, which in turn affects the user experience.

[0004] That is, current household water-using devices usually only provide hot water and cold water at fixed temperatures, and current water-using devices cannot provide steam, resulting in a poor user experience. Summary of the invention

[0005] The technical problem to be solved by the present disclosure is to overcome the defects of the water-using device in the prior art that the water-using device is incomplete in function and occupies space, and to provide a water-using device and a water heater.

[0006] The present invention solves the above technical problems through the following technical solutions:

[0007] According to a first aspect of the present disclosure, there is provided a water-using device, comprising a first water inlet pipe, a second water inlet pipe and a third water inlet pipe,

[0008] The first water inlet pipe is connected to the first water outlet pipe through a heat exchange module, and the first water outlet pipe is used to output hot water.

[0009] The second water inlet pipe is connected to a second water outlet pipe through the heat exchange module, and the second water outlet pipe is used to output steam;

[0010] The third water inlet pipe is also connected to the third water outlet pipe through a heating module, and the third water outlet pipe is used to output hot water heated by the heating module;

[0011] The water outlet of the heating module is also connected to the water inlet of the heat exchange module, and the water outlet of the heat exchange module is connected to the water inlet of the heating module;

[0012] The first water inlet pipe and the second water inlet pipe are both connected to the heat exchange water inlet end of the heat exchange module, and the first water outlet pipe and the second water outlet pipe are both connected to the heat exchange water outlet end of the heat exchange module.

[0013] Preferably, a direct-connected pipe is provided between the first water inlet pipe and the first water outlet pipe for outputting cold water.

[0014] Preferably, the water-using device further comprises a first valve;

[0015] The first valve is disposed at the connection between the first water inlet pipe and the direct-connection pipe, and is used to switch the water in the first water inlet pipe to enter the first water outlet pipe from the direct-connection pipe, or to enter the first water outlet pipe through the heat exchange module.

[0016] Preferably, the heat exchange module includes a second valve;

[0017] The heat exchange module includes a first heat exchange submodule and a second heat exchange submodule, the first heat exchange submodule is connected to the first water inlet pipe and the first water outlet pipe, the second heat exchange submodule is connected to the second water inlet pipe and the second water outlet pipe, and the second valve is used to switch the hot water entering from the thermal mass water inlet end to pass through the first heat exchange submodule or the second heat exchange submodule.

[0018] Preferably, a first direct connection channel and a second direct connection channel connected in sequence are provided between the thermal mass water inlet and the thermal mass water outlet;

[0019] The first direct connection channel is connected in parallel with the first heat exchange pipe in the first heat exchange submodule;

[0020] The second direct-connection channel is connected in parallel with the second heat exchange pipe in the second heat exchange submodule.

[0021] Preferably, the second end of the first direct channel, the second end of the first heat exchange pipe, the first end of the second direct channel, and the first end of the second heat exchange pipe are all connected to the second valve;

[0022] Wherein, the second end of the first direct channel and the first end of the second direct channel are two ends connected to the first direct channel and the second direct channel respectively;

[0023] The second end of the first heat exchange pipe and the first end of the second heat exchange pipe are respectively two ends close to the first direct connection channel and the second direct connection channel.

[0024] Preferably, the water-using device further comprises a water purification module;

[0025] The water purification module includes a first water inlet branch, a second water inlet branch and a third water inlet branch;

[0026] Both ends of the first water inlet branch are respectively connected to the first water inlet pipe;

[0027] Both ends of the second water inlet branch are respectively connected to the second water inlet pipe;

[0028] The third water inlet branches are respectively connected to the third water inlet pipes.

[0029] Preferably, it also includes a branch valve;

[0030] The branch sub-valves are respectively arranged at the connection between each water inlet pipe and its corresponding water inlet branch, and are used to switch the incoming water to pass through or not pass through the water purification module.

[0031] Preferably, the water-using device further comprises a water pump; the water pump is arranged on the pipeline between the heating module and the heat exchange module.

[0032] According to a second aspect of the present disclosure, a water heater is provided, comprising the water-using device according to the first aspect of the present disclosure.

[0033] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present disclosure.

[0034] The positive and progressive effects of this disclosure are:

[0035] The water-using device provided by the present disclosure can enable users to obtain domestic cold / hot water, drinking cold / hot water and water vapor through different water outlet pipes, so that the water-using device provided by the present disclosure has the functions of both a water dispenser and a water heater, and the water-using device in the present disclosure can also provide steam for cleaning kitchen utensils, walls, etc.; in addition, the steam provided in the present disclosure can also be connected to a steamer and used in conjunction with the steamer to provide a steam source for the steamer, so that there is no need to install an additional water tank and steam generator in the steamer, so as to improve the utilization efficiency of the water-using device; that is, the water-using device provided by the present disclosure is rich in functions, reduces the research and development costs of other equipment, and improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram of the structure of the water-using device in Example 1;

[0037] Figure 2 This is a water flow diagram when using domestic hot water in Example 1;

[0038] Figure 3 This is a water flow diagram when using drinking hot water in Example 1;

[0039] Figure 4 This is a water flow diagram when steam is used in Example 1;

[0040] Figure 5 This is a water flow diagram when domestic hot water and drinking hot water are used simultaneously in Example 1;

[0041] Figure 6 This is a water flow diagram when domestic hot water and steam are used simultaneously in Example 1;

[0042] Figure 7 This is a water flow diagram when drinking hot water and steam are used simultaneously in Example 1;

[0043] Figure 8 This is a water flow diagram when domestic hot water, drinking hot water and steam are used simultaneously in Example 1. DETAILED DESCRIPTION

[0044] The present disclosure is further described below by way of examples, but the present disclosure is not limited to the scope of the examples.

[0045] Example 1

[0046] like Figure 1 As shown, in an embodiment of the present disclosure, a water-using device is provided, including a first water inlet pipe 100, a second water inlet pipe 200 and a third water inlet pipe 300, wherein the first water inlet pipe 100 is connected to a first water outlet pipe 101 through a heat exchange module 400, and the first water outlet pipe 101 is used to output hot water, the second water inlet pipe 200 is connected to a second water outlet pipe 201 through the heat exchange module 400, and the second water outlet pipe 201 is used to output steam; the third water inlet pipe 300 is also connected to the first water outlet pipe 101 through a heating module 500. It is connected to the third water outlet pipe 301, and the third water outlet pipe 301 is used to output hot water heated by the heating module; the water outlet end of the heating module 500 is also connected to the thermal mass water inlet end of the heat exchange module 400, and the thermal mass water outlet end of the heat exchange module 400 is connected to the water inlet end of the heating module; the first water inlet pipe 100 and the second water inlet pipe 200 are both connected to the heat exchange water inlet end of the heat exchange module 400, and the first water outlet pipe 101 and the second water outlet pipe 201 are both connected to the heat exchange water outlet end of the heat exchange module 400.

[0047] In an optional embodiment, the first water inlet pipe and the second water inlet pipe can be combined into one water inlet pipe, and the combined water inlet pipe still corresponds to the first water outlet pipe and the second water outlet pipe, so as to output drinking hot water through the first water outlet pipe, or output steam through the second water outlet pipe.

[0048] In the disclosed embodiment, a direct-connection pipe 600 is further provided between the first water inlet pipe and the first water outlet pipe for outputting cold water.

[0049] In the embodiment of the present disclosure, the water-using device also includes a first valve 601; the first valve 601 is arranged at the connection between the first water inlet pipe 100 and the direct-connection pipe 600, and is used to switch the water of the first water inlet pipe from the direct-connection pipe into the first water outlet pipe, or into the first water outlet pipe through the heat exchange module.

[0050] In the embodiment of the present disclosure, the heat exchange module 400 includes a second valve 401; the heat exchange module also includes a first heat exchange sub-module 402 and a second heat exchange sub-module 403, the first heat exchange sub-module 402 is connected to the first water inlet pipe 100 and the first water outlet pipe 101, the second heat exchange sub-module 403 is connected to the second water inlet pipe 200 and the second water outlet pipe 201, and the second valve 401 is used to switch the hot water entering from the thermal mass water inlet end through the first heat exchange sub-module or through the second heat exchange sub-module.

[0051] In the embodiment of the present disclosure, a first direct channel and a second direct channel connected in sequence are provided between the heat mass water inlet and the heat mass water outlet; the first direct channel is connected in parallel with the first heat exchange pipe in the first heat exchange submodule; the second direct channel is connected in parallel with the second heat exchange pipe in the second heat exchange submodule.

[0052] The second end of the first direct channel, the second end of the first heat exchange pipe, the first end of the second direct channel, and the first end of the second heat exchange pipe are all connected to the second valve; the second end of the first direct channel and the first end of the second direct channel are respectively the two ends connected to the first direct channel and the second direct channel; the second end of the first heat exchange pipe and the first end of the second heat exchange pipe are respectively the two ends close to the first direct channel and the second direct channel, so that the first direct channel, the second direct channel, the first heat exchange pipe and the second heat exchange pipe are controlled to be on and off by the second valve, so as to further obtain water under the target demand state through the heat exchange device.

[0053] In the embodiment of the present disclosure, the water use device also includes a water purification module 700; the water purification module 700 includes a first water inlet branch, a second water inlet branch and a third water inlet branch; the two ends of the first water inlet branch are respectively connected to the first water inlet pipe; the two ends of the second water inlet branch are respectively connected to the second water inlet pipe; the third water inlet branch is respectively connected to the third water inlet pipe.

[0054] Among them, in the embodiment of the present disclosure, the water use device also includes a branch sub-valve 701; the branch sub-valve 701 is respectively arranged at the connection between each water inlet pipe and its corresponding water inlet branch, and is used to switch the incoming water through or not through the water purification module, thereby achieving purified drinking water or domestic water / soft water through the water purification module.

[0055] In a preferred embodiment, the water purification module can achieve different purification effects, such as outputting a water flow after filtering out only larger particles in the water after purifying the water flow entering the water purification module; or outputting soft water, or outputting a water flow whose purified water quality meets drinking requirements.

[0056] In a preferred embodiment, the water-using device further comprises a water pump 800; the water pump is arranged on the pipeline between the heating module and the heat exchange module. Through the water pump, when the water flow in the heat exchange module or the heating module is insufficient, water can be automatically added to the heat exchange module or the heating module, and the water volume in the water-using device can be kept stable, and the gaseous water or liquid water can be maintained at a stable value.

[0057] The following specifically describes the use principle of the water-using device in the embodiment of the present disclosure:

[0058] For users, they can use an operation panel to obtain water in various states. For example, the operation panel is provided with first-level menu options such as switch, temperature, water state, etc. After the user selects the steam function, the user will be prompted to further select the steam temperature. On the second operation panel (used to control the temperature of direct drinking water), there are two buttons: temperature + and temperature -.

[0059] During use, users can use the operation panel to realize functions such as domestic cold / hot water, drinking cold / hot water, steam, etc.

[0060] When only domestic hot water is used, Q1≥Qa and Q2<Qb and the user does not select the steam function. At this time, the combustion load is adjusted according to the domestic water temperature set by the user and the actual flow size Q1 to output the water temperature that meets the user's needs. At the same time, the water pump does not run, and the second valve controls the first direct connection channel, the second direct connection channel, the first heat exchange pipeline and the second heat exchange pipeline to be disconnected. The water flow direction is as follows: Figure 2 shown.

[0061] When only drinking hot water is used, Q1<Qa and Q2≥Qb and the user does not select the steam function. At this time, the combustion load is adjusted according to the drinking water outlet temperature set by the user and the actual flow size Q2. At the same time, the water pump is running, the second valve controls the first direct connection channel to be disconnected, the second direct connection channel to be closed, the first heat exchange pipeline to be closed, and the second heat exchange pipeline to be disconnected. The water flow direction is as follows: Figure 3 shown.

[0062] When only steam is used, Q1<Qa and Q2<Qb and the user selects the steam function. At this time, the combustion load is adjusted according to the steam setting temperature and the steam flow Q3. At the same time, the water pump is running, the second valve controls the first direct connection channel to close, the second direct connection channel to disconnect, the first heat exchange pipeline to disconnect, and the second heat exchange pipeline to close. The water flow direction is as follows: Figure 4 shown.

[0063] Among them, Q1 is the domestic cold / hot water outlet, that is, the flow sensor at the outlet of the third water outlet pipe, and the real-time flow of domestic water detected is recorded as Q1, where the minimum starting flow of domestic water is Qa; Q2 is the drinking cold / hot water outlet, that is, the flow sensor at the outlet of the first water outlet pipe, and the real-time flow of drinking water detected is recorded as Q2, where the minimum starting flow of drinking hot water is Qb, that is, when the first water outlet pipe needs to discharge hot water and the flow is greater than Qb, the heating module 500 is automatically turned on to provide hot water for the heat exchange module for heat exchange; Q3 is the steam flow.

[0064] When domestic hot water and drinking hot water are needed at the same time, the water flow direction is as follows Figure 5 As shown, there are multiple situations at this time:

[0065] Scenario 1: When using domestic hot water, drinking hot water intervenes, Q1≥Qa and Q2<Qb and the user has not selected the steam function. When the user turns on the drinking hot water, it is detected that Q2≥Qb. At this time, the combustion load in the heating module is adjusted according to the domestic water temperature, drinking water temperature, and actual Q1 and Q2 set by the user. At the same time, the water pump changes from non-operation to operation, the first direct connection channel is disconnected, the second direct connection channel is closed, the first heat exchange pipe is closed, and the second heat exchange pipe is disconnected.

[0066] Scenario 2: When using drinking hot water, domestic hot water intervenes, Q1<Qa and Q2≥Qb and Q3<Qc and the user has not selected the steam function. When the user turns on the domestic hot water, it is detected that Q1≥Qa. At this time, the combustion load in the heating module is adjusted according to the domestic water temperature, drinking water temperature, and actual Q1 and Q2 set by the user. At the same time, the water pump maintains operation, the first direct connection channel is disconnected, the second direct connection channel is closed, the first heat exchange pipe is closed, and the second heat exchange pipe is disconnected.

[0067] Scenario three: When using domestic hot water and drinking hot water at the same time, switch to using only drinking hot water. At this time, it is detected that Q1<Qa, the heating module adjusts the combustion load according to actual demand, the water pump keeps running, the first direct connection channel is disconnected, the second direct connection channel is closed, the first heat exchange pipe is closed, and the second heat exchange pipe is disconnected.

[0068] Situation 4: When using domestic hot water and drinking hot water simultaneously and then switching to only using domestic hot water, if it is detected that Q2 < Qb at this time, the heating module adjusts the combustion load according to the actual demand, the water pump stops running, and the first direct connection channel, the second direct connection channel, the first heat exchange pipeline, and the second heat exchange pipeline are all disconnected.

[0069] When it is necessary to use domestic hot water and steam simultaneously, the water flow direction is as Figure 6 shown, and there are various situations at this time:

[0070] Situation 1: When using domestic hot water and the steam function intervenes, at this time, the load is provided according to the set temperature and actual flow rate of the user. At the same time, the water pump starts running. When the first direct connection channel, the second direct connection channel, the first heat exchange pipeline, and the second heat exchange pipeline are all in the disconnected state, it is adjusted to the first direct connection channel being disconnected, the second direct connection channel being closed, the first heat exchange pipeline being closed, and the second heat exchange pipeline being disconnected.

[0071] Situation 2: When using the steam function and domestic hot water intervenes, at this time, the load is provided according to the set temperature and actual flow rate of the user. At the same time, the water pump keeps running, and the first direct connection channel remains disconnected, the second direct connection channel remains closed, the first heat exchange pipeline remains closed, and the second heat exchange pipeline remains disconnected.

[0072] Situation 3: When using domestic hot water and the steam function and the steam function exits, at this time, the load is provided according to the set temperature and actual flow rate of the user. At the same time, the water pump stops running, and the states of the first direct connection channel, the second direct connection channel, the first heat exchange pipeline, and the second heat exchange pipeline remain unchanged.

[0073] Situation 4: When using domestic hot water and the steam function and domestic hot water exits, at this time, the load is provided according to the set temperature and actual flow rate of the user. At the same time, the water pump keeps running, and the first heat exchange pipeline and the second direct connection channel change from the closed state to the disconnected state.

[0074] When it is necessary to use drinking hot water and steam simultaneously, the water flow direction is as Figure 7 shown, and there are various situations at this time:

[0075] Situation 1: When using domestic hot water and the steam function intervenes, at this time, the load is provided according to the set temperature and actual flow rate of the user. At the same time, the water pump starts running, and the second valve controls the first direct connection channel to be closed, the second direct connection channel to be disconnected, the first heat exchange pipeline to be disconnected, and the second heat exchange pipeline to be closed.

[0076] Situation 2: When using the steam function and domestic hot water intervenes, at this time, the load is provided according to the set temperature and actual flow rate of the user. At the same time, the water pump keeps running, maintaining the state where the first direct connection channel is closed, the second direct connection channel is disconnected, the first heat exchange pipeline is disconnected, and the second heat exchange pipeline is closed.

[0077] Scenario three: When using domestic hot water and steam functions, the steam function is exited. At this time, the load is provided according to the user's set temperature and actual flow. At the same time, the water pump stops running, and the first direct connection channel and the second heat exchange pipe are adjusted from closed to open.

[0078] Scenario 4: When using the domestic hot water and steam functions, the domestic hot water is exited. At this time, the load is provided according to the user's set temperature and actual flow rate, while the water pump maintains operation and maintains the closed state of the first direct connection channel and the second heat exchange pipe.

[0079] When domestic hot water, drinking hot water and steam are needed at the same time, the water flow direction is as follows Figure 8 As shown, there are multiple situations at this time:

[0080] Scenario 1: When using domestic hot water and drinking hot water, the steam function intervenes. At the same time, the water pump maintains operation, and the closed state of the first heat exchange pipe and the second direct channel is adjusted to the closed state of the first heat exchange pipe and the second heat exchange channel.

[0081] Scenario 2: When using domestic hot water and steam functions, drinking hot water is introduced. At the same time, the water pump maintains operation, and the closed state of the first direct channel and the second heat exchange pipe is adjusted to the closed state of the first heat exchange pipe and the second heat exchange channel.

[0082] Scenario 3: When using the steam function and drinking hot water, domestic hot water is involved. At the same time, the water pump keeps running to maintain the closed state of the first heat exchange pipe and the second heat exchange channel.

[0083] Scenario 4: When using domestic hot water, drinking hot water and steam, the steam function is exited. At the same time, the water pump maintains operation, and the closed state of the first heat exchange pipe and the second heat exchange pipe is adjusted to the closed state of the first heat exchange pipe and the second direct connection channel.

[0084] Situation 5: When using domestic hot water, drinking hot water and steam, the drinking hot water function is exited. At the same time, the water pump keeps running, and the closed state of the first heat exchange pipe and the second heat exchange pipe is adjusted to the closed state of the first direct channel and the second heat exchange pipe.

[0085] Scenario 6: When using domestic hot water, drinking hot water and steam, the domestic hot water function is exited. At the same time, the water pump keeps running to maintain the closed state of the first heat exchange pipe and the second heat exchange pipe.

[0086] The water-using device provided by the present disclosure enables users to obtain domestic cold / hot water, drinking cold / hot water, and water vapor through different water outlet pipes in the water-using device, so that the water-using device provided by the present disclosure also serves as a water dispenser, and the water-using device in the present disclosure can also provide steam for cleaning kitchen utensils, walls, etc.; in addition, the steam provided in the present disclosure can also be connected to a steamer and used in conjunction with the steamer to provide a steam source for the steamer, so that there is no need to install an additional water tank and steam generator in the steamer, so as to achieve more efficient use of the water-using device; that is, the water-using device provided by the present disclosure is rich in functions, reduces the research and development costs of other equipment, and improves the user experience.

[0087] Example 2

[0088] A water heater is provided in an embodiment of the present disclosure, and the water heater includes the water use device described in Example 1.

[0089] Although the specific embodiments of the present disclosure are described above, those skilled in the art should understand that this is only an example, and the protection scope of the present disclosure is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present disclosure, but these changes and modifications all fall within the protection scope of the present disclosure.

Claims

1. A water-using device, characterized in that: It includes a first water inlet pipe, a second water inlet pipe and a third water inlet pipe, The first water inlet pipe is connected to the first water outlet pipe through a heat exchange module, and the first water outlet pipe is used to output hot water. The second water inlet pipe is connected to a second water outlet pipe through the heat exchange module, and the second water outlet pipe is used to output steam; The third water inlet pipe is also connected to the third water outlet pipe through a heating module, and the third water outlet pipe is used to output hot water heated by the heating module; The water outlet of the heating module is also connected to the water inlet of the heat exchange module, and the water outlet of the heat exchange module is connected to the water inlet of the heating module; The first water inlet pipe and the second water inlet pipe are both connected to the heat exchange water inlet end of the heat exchange module, and the first water outlet pipe and the second water outlet pipe are both connected to the heat exchange water outlet end of the heat exchange module.

2. The water-using device according to claim 1, characterized in that: A direct-connection pipe is also provided between the first water inlet pipe and the first water outlet pipe for outputting cold water.

3. The water-using device according to claim 2, characterized in that: The water-using device further comprises a first valve; The first valve is disposed at the connection between the first water inlet pipe and the direct-connection pipe, and is used to switch the water in the first water inlet pipe to enter the first water outlet pipe from the direct-connection pipe, or to enter the first water outlet pipe through the heat exchange module.

4. The water-using device according to claim 1, characterized in that: The heat exchange module includes a second valve; The heat exchange module includes a first heat exchange submodule and a second heat exchange submodule, the first heat exchange submodule is connected to the first water inlet pipe and the first water outlet pipe, the second heat exchange submodule is connected to the second water inlet pipe and the second water outlet pipe, and the second valve is used to switch the hot water entering from the thermal mass water inlet end to pass through the first heat exchange submodule or the second heat exchange submodule.

5. The water-using device according to claim 4, characterized in that: A first direct connection channel and a second direct connection channel connected in sequence are provided between the thermal mass water inlet end and the thermal mass water outlet end; The first direct connection channel is connected in parallel with the first heat exchange pipe in the first heat exchange submodule; The second direct-connection channel is connected in parallel with the second heat exchange pipe in the second heat exchange submodule.

6. The water-using device according to claim 5, characterized in that: The second end of the first direct channel, the second end of the first heat exchange pipe, the first end of the second direct channel, and the first end of the second heat exchange pipe are all connected to the second valve; Wherein, the second end of the first direct channel and the first end of the second direct channel are two ends connected to the first direct channel and the second direct channel respectively; The second end of the first heat exchange pipe and the first end of the second heat exchange pipe are respectively two ends close to the first direct connection channel and the second direct connection channel.

7. The water-using device according to claim 1, characterized in that: The water-using device also includes a water purification module; The water purification module comprises a first water inlet branch, a second water inlet branch and a third water inlet branch; Both ends of the first water inlet branch are respectively connected to the first water inlet pipe; Both ends of the second water inlet branch are respectively connected to the second water inlet pipe; The third water inlet branches are respectively connected to the third water inlet pipes.

8. The water-using device according to claim 7, characterized in that: Also includes a branch sub-valve; The branch sub-valves are respectively arranged at the connection between each water inlet pipe and its corresponding water inlet branch, and are used to switch the incoming water to pass through or not pass through the water purification module.

9. The water-using device according to claim 1, characterized in that: The water-using device also includes a water pump; the water pump is arranged on the pipeline between the heating module and the heat exchange module.

10. A water heater, characterized in that: The water heater comprises the water-using device according to any one of claims 1-9.

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