CN219048104U - Water drinking device - Google Patents

Abstract

The utility model relates to the technical field of household appliances, in particular to a water drinking device, which comprises: the water inlet end of the water pump is connected with a water source through a first pipeline; the heating module is provided with a heating inlet communicated with the water outlet end of the water pump; the hot water inlet of the cooling module is connected with the heating outlet of the heating module; the first waterway switching element is provided with a water inlet, a first water outlet and a second water outlet, the water inlet is connected with the hot water outlet of the cooling module, the second water outlet is connected with the first pipeline through a return pipeline, and the first waterway switching element is provided with a first state for enabling the water inlet to be communicated with the first water outlet and a second state for enabling the water inlet to be communicated with the second water outlet; and the release structure is connected with the first water outlet and is suitable for releasing water outwards. The water drinking device can overcome the defect that a part of cooling water remains in the water drinking device in the prior art, so that the temperature of water taking is lower than the set temperature or time and water resources are wasted.

Description

Water drinking device

Technical Field

The utility model relates to the technical field of household appliances, in particular to a water drinking device.

Background

The water cooking machine is a machine which can firstly boil water and then rapidly cool the water to the required temperature, and accords with the drinking habit of people. The method has the advantage that a user can quickly obtain cool white of the required temperature. With the improvement of the requirements of people on the health and safety of drinking water, cool and white products are favored by the vast users. The current boiled water machine comprises a heating body, a heat exchanger, a pipeline and a water outlet nozzle, and cooling water can be reserved in the heating body, the heat exchanger, the pipeline and the water outlet nozzle after water is taken, so that if a user needs to directly take water, the cooling water can lead to that the first cup of water is lower than the set temperature.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is to overcome the defect that the water temperature of the boiled water machine in the prior art is lower than the set temperature when the first cup of water is taken, so as to provide the water drinking device capable of enabling the water temperature to be consistent with the set temperature when the first cup of water is taken.

In order to solve the above technical problems, the present utility model provides a drinking device, comprising: the water inlet end of the water pump is connected with a water source through a first pipeline; the heating module is provided with a heating inlet communicated with the water outlet end of the water pump; the hot water inlet of the cooling module is connected with the heating outlet of the heating module; the first waterway switching element is provided with a water inlet, a first water outlet and a second water outlet, wherein the water inlet is connected with a hot water outlet of the cooling module, the second water outlet is connected with the first pipeline through a return pipeline, and the first waterway switching element is provided with a first state for enabling the water inlet to be communicated with the first water outlet and a second state for enabling the water inlet to be communicated with the second water outlet; and a release structure connected to the first water outlet, the release structure being adapted to release water outwardly.

Optionally, the release structure department is equipped with first collection module, first collection module can gather the temperature of release structure department, watering device still includes control module, control module with first collection module with first water route switching element communication connection, control module can be in when the collection temperature of first collection module equals to predetermine the temperature first water route switching element switches over to the second state.

Optionally, the water drinking device further comprises a clean water tank, wherein the clean water tank is provided with a clean water outlet, and the clean water outlet is connected with the water pump through the first pipeline.

Optionally, the water dispenser further comprises: the second acquisition module is suitable for acquiring the water temperature at the water purifying tank; the third acquisition module is suitable for acquiring the water temperature at the heating outlet of the heating module, the control module is in communication connection with the second acquisition module and the third acquisition module, and is suitable for controlling the first waterway switching element to switch to the second state when the acquisition temperatures of the first acquisition module and the third acquisition module are equal to the acquisition temperature of the second acquisition module, and controlling the first waterway switching element to switch to the first state when the acquisition temperatures of the first acquisition module and the third acquisition module are higher than the acquisition temperature of the second acquisition module.

Optionally, the cooling module is a heat exchanger, a hot water inlet of the heat exchanger is connected with a heating outlet of the heating module, a hot water outlet of the heat exchanger is connected with a water inlet of the first waterway switching element, a cooling water inlet of the heat exchanger is connected with a water outlet end of the water pump, and a cooling water outlet of the heat exchanger is connected with a heating inlet of the heating module.

Optionally, the water dispenser further comprises a second waterway switching element disposed between the hot water inlet of the heat exchanger, the heating outlet of the heating module, and the water inlet of the first waterway switching element, the second waterway switching element having a third state of communicating the heating outlet of the heating module with the hot water inlet of the heat exchanger, and a fourth state of connecting the heating outlet of the heating module with the water inlet of the first waterway switching element.

Optionally, the water outlet end of the water pump is connected with the cooling water inlet of the heat exchanger through a second pipeline and is connected with the heating inlet of the heating module through a third pipeline, and the second pipeline and/or the third pipeline is/are provided with a regulating valve.

Optionally, the water dispenser further comprises: a raw water tank adapted to contain raw water; and the filtering inlet of the water filtering module is connected with the raw water outlet of the raw water tank, and the purified water inlet of the purified water tank is connected with the purified water outlet of the water filtering module.

Optionally, the water drinking device further comprises a concentrate tank, and the waste water outlet of the water filtering module is connected with the concentrate tank.

The technical scheme of the utility model has the following advantages:

according to the water drinking device provided by the utility model, when the water temperature in the release structure is higher, the first waterway switching element can be switched to the first state, so that the water in the release structure is allowed to directly flow out. When the water in the release structure is cooled, the first waterway switching element can be switched to the second state, so that the water in the release structure and before the release structure is pumped to the heating module to be reheated under the action of the water pump before the water is led back to the water pump, and the user can be ensured to obtain the water with proper temperature. In addition, the return pipeline can return the stored water left in the pipeline to the front of the water pump through the return pipeline, so that low-temperature pure water is eliminated, the temperature difference between the inlet water and the outlet water of the heating module is reduced, the water supply flow is improved, and the heating time is shortened. Therefore, the drinking device can overcome the defect that a part of cooling water remains in the drinking device in the prior art, so that the temperature of the taken water is lower than the set temperature or time and water resources are wasted, and can ensure that a user can take water with proper temperature on the premise of not wasting the water resources.

Drawings

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

Fig. 1 is a schematic view of a drinking device provided in embodiment 1 of the present utility model.

Reference numerals illustrate:

1. a release structure; 2. a first waterway switching element; 3. a first acquisition module; 4. a return line; 5. a second waterway switching element; 6. a heating module; 7. a third acquisition module; 8. a cooling module; 9. a second pipeline; 10. a third pipeline; 11. a regulating valve; 12. a water pump; 13. a first pipeline; 14. a second one-way valve; 15. a flow meter; 16. a second acquisition module; 17. a clean water tank; 18. a micro-switch; 19. a first liquid level sensor; 20. a water filtering module; 21. a self priming pump; 22. a raw water tank; 23. a concentrate tank; 24. a waste water electromagnetic valve; 25. a first one-way valve; 26. a first TDS probe; 27. and a second liquid level sensor.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. 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.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

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

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Example 1

The water cooking machine is a machine which can firstly boil water and then rapidly cool the water to the required temperature, and accords with the drinking habit of people. The method has the advantage that a user can quickly obtain cool white of the required temperature. With the improvement of the requirements of people on the health and safety of drinking water, cool and white products are favored by the vast users. The current boiled water machine comprises a heating body, a heat exchanger, a pipeline and a water outlet nozzle, and cooling water can be reserved in the heating body, the heat exchanger, the pipeline and the water outlet nozzle after water is taken, so that if a user needs to directly take water, the cooling water can lead to that the first cup of water is lower than the set temperature.

To this end, the present embodiment provides a drinking device.

In one embodiment, the water dispenser includes a water pump 12, a heating module 6, a cooling module 8, a first waterway switching element 2, and a release structure 1. The water inlet end of the water pump 12 is connected with a water source through a first pipeline 13; the heating inlet of the heating module 6 is communicated with the water outlet end of the water pump 12; the hot water inlet of the cooling module 8 is connected with the heating outlet of the heating module 6; the first waterway switching element 2 has a water inlet, a first water outlet and a second water outlet, the water inlet is connected with the hot water outlet of the cooling module 8, the second water outlet is connected with the first pipeline 13 through the return pipeline 4, and the first waterway switching element 2 has a first state that the water inlet is communicated with the first water outlet and a second state that the water inlet is communicated with the second water outlet; a release structure 1 is connected to the first water outlet, the release structure 1 being adapted to release water outwards. Wherein the first waterway switching element 2 is preferably but not limited to a two-way solenoid valve.

As shown in fig. 1, the connection position between the return line 4 and the first line 13 is located upstream of the water pump 12 and near the water pump 12, specifically, the connection position between the return line 4 and the first line 13 is located in front of the water inlet end of the water pump 12 along the water flow direction. The heating module 6 is preferably, but not limited to, a heating wire, a PTC heater, a semiconductor temperature controller, or the like. The release structure 1 is preferably, but not limited to, a tap, a spray head or a tap, etc. The drinking device is preferably, but not limited to, a water machine.

In this embodiment, the water dispenser is mainly provided with the first waterway switching element 2 at the upstream of the release structure 1, and the first waterway switching element 2 has a hot water outlet of the cooling module 8 connected with the release structure 1

A first state in which the hot water outlet of the cooling module 8 is connected to the return line 4, and a second state in which the hot water outlet is connected to the return line 4. When the water temperature in the release structure 1 is high, the first waterway switching element 2 can be switched to the first state, allowing the water in the release structure 1 to directly flow out. When the water in the release structure 1 has cooled, the first waterway switching element 2 can be switched to the second state, so that the water in the release structure 1 and before the release structure 1 is pumped to the heating module 6 under the action of the water pump 12 to be reheated before being led back to the water pump 12, thereby ensuring that

The user can get the water with proper temperature. In addition, the return pipeline 4 can return the stored water left in the pipeline to the front of the water pump 12 through the return pipeline 4, so that low-temperature pure water is eliminated, the water inlet and outlet temperature difference of the heating module 6 is reduced, the water supply flow is increased, and the heating time is shortened. Therefore, the drinking device can overcome the defects that part of cooling water remains in the drinking device in the prior art, so that the temperature of the taken water is lower than the set temperature or time and water resources are wasted, and can ensure that a user takes the temperature on the premise of not wasting the water resources

Water with a proper degree. In addition, the drinking device has simple structure, easy manufacture and convenient popularization and application of the implementation 5.

On the basis of the above embodiment, in a preferred embodiment, a first collecting module 3 is provided at the releasing structure 1, the first collecting module 3 is capable of collecting the water temperature at the releasing structure 1, and the drinking device further comprises a control module, and the control module, the first collecting module 3 and the second collecting module 3

The control module can control the first waterway switching element 2 to switch to the second state when the acquisition 0 temperature of the first acquisition module 3 is equal to a preset temperature. When the water temperature acquired by the first acquisition module 3 is equal to the preset temperature, the control module can control the first waterway switching element 2 to switch to the second state, so that the water in the release structure 1 is led back to the upstream of the water inlet of the heating module 6 and is reheated, and the user can be ensured to obtain the water with proper temperature. When the water temperature acquired by the first acquisition module 3 is higher than the preset temperature, the control module can control the first waterway switching element 2 to be switched to the first state 5, so that the waste of energy is avoided, and a user can quickly receive water with proper temperature. The preset temperature may be selected as room temperature, typically defined as 25 ℃. And can also refer to the temperature of the indoor environment in which the drinking device is located. And can be set according to the requirements.

The control module may include a programmable logic control unit (such as a PLC or a CPU), a memory, and electronic components connected to the programmable logic control unit, etc., which are well known to those skilled in the art, and will not be described in detail herein. The first acquisition module 3 is preferably but not limited to a bulb or thermal infrared imager or the like. Preferably, in the present embodiment, the first acquisition module 3 is a bulb connected to the release structure 1.

On the basis of the above embodiments, in a preferred embodiment, the drinking device further comprises a clean water tank 17, the clean water tank 17 having a clean water outlet, which is connected to the water pump 12 via the first line 13. In this embodiment, the clean water tank 17 is provided to make the water drunk by the user clean and healthier. Specifically, the purified water in the purified water tank 17 may be directly filled by a user, or the purified water filtered by the water filtering module 20 may be stored in the purified water tank 17 by connecting the purified water tank 17 to the water filtering module 20.

On the basis of the above embodiments, in a preferred embodiment, the drinking device further comprises a second collecting module 16 and a third collecting module 7. The second collection module 16 is adapted to collect the water temperature at said fresh water tank 17. Since the water at the clean water tank 17 is not heated, its temperature can represent the indoor temperature. The third acquisition module 7 is adapted to acquire the water temperature at the heating outlet of said heating module 6. Since the water output from the heating module 6 is not cooled by the cooling module 8, the temperature of the water flowing out of the heating module 6 is the highest, and therefore, when the water temperature at the water outlet of the heating module 6 collected by the third collecting module 7 is the preset temperature, it means that the water in the drinking water device is cooled, and needs to be led back to the upstream of the heating inlet of the heating module 6 and reheated. The control module is in communication connection with the second collection module 16 and the third collection module 7, and is suitable for controlling the first waterway switching element 2 to switch to the second state when the collection temperatures of the first collection module 3 and the third collection module 7 are equal to the collection temperature of the second collection module 16, and controlling the first waterway switching element 2 to switch to the first state when the collection temperatures of the first collection module 3 and the third collection module 7 are higher than the collection temperature of the second collection module 16.

The cooling module 8 may be selected from a semiconductor temperature controller capable of heating up water and cooling down water, and preferably, in this embodiment, the cooling module 8 is a heat exchanger. The hot water inlet of the heat exchanger is connected with the heating outlet of the heating module 6, the hot water outlet of the heat exchanger is connected with the water inlet of the first waterway switching element 2, the cooling water inlet of the heat exchanger is connected with the water outlet end of the water pump 12, and the cooling water outlet of the heat exchanger is connected with the heating inlet of the heating module 6. The heat exchanger not only can be used for cooling hot water, but also can heat cooling water to be injected into the heating module 6 by means of hot water, so that the temperature of water entering the heating module 6 is increased, the temperature difference between water inlet and water outlet of the heating module 6 is reduced, the water supply flow is increased, and the heating time is reduced.

On the basis of the above embodiment, in a preferred embodiment, the water dispenser further includes a second waterway switching element 5 disposed between the hot water inlet of the heat exchanger, the heating outlet of the heating module 6, and the water inlet of the first waterway switching element 2, the second waterway switching element 5 having a third state of communicating the heating outlet of the heating module 6 with the hot water inlet of the heat exchanger, and a fourth state of connecting the heating outlet of the heating module 6 with the water inlet of the first waterway switching element 2. This enables the second waterway switching element 5 to be controlled to switch to the fourth state when the user needs to receive the highest grade hot water, so that the hot water heated by the heating module 6 directly flows out through the release structure 1. When the user needs to receive lower grade hot water or warm water, the second waterway switching element 5 can be controlled to switch to the third state, so that the hot water generated by the heating module 6 flows out after being exchanged by the heat exchanger.

On the basis of the above embodiment, in a preferred embodiment, the water outlet end of the water pump 12 is connected to the cooling water inlet of the heat exchanger through a second pipeline 9, and is connected to the heating inlet of the heating module 6 through a third pipeline 10, and the second pipeline 9 and/or the third pipeline 10 are provided with a regulating valve 11. In this embodiment, the ratio of water entering the cooling water inlet of the heat exchanger and the heating inlet of the heating module 6 can be adjusted by adjusting the opening and closing degree of the adjusting valve 11, thereby adjusting the water temperature to be outputted.

On the basis of the above embodiments, in a preferred embodiment, the drinking device further comprises a raw water tank 22 and a water filtering module 20. The raw water tank 22 is adapted to contain raw water; the filtering inlet of the water filtering module 20 is connected with the raw water outlet of the raw water tank 22, and the purified water inlet of the purified water tank 17 is connected with the purified water outlet of the water filtering module 20. The water in the raw water tank 22 can be filtered by the water filtering module 20 and then enter the clean water tank 17, and preferably, a self-priming pump 21 is further arranged between the raw water tank 22 and the water filtering module 20, and the self-priming pump 21 can drive the water in the raw water tank 22 to flow into the water filtering module 20. A first non-return valve 25 is preferably also provided between the filtration module 20 and the fresh-water tank 17. The first check valve 25 prevents the reverse flow of water in the fresh water tank 17. Preferably, a microswitch 18 and a first level sensor 19 are arranged in the clean water tank 17. A second level sensor 27 is provided in the raw water tank 22. Between the raw tank 22 and the water filtering module 20 is preferably provided a first TDS probe 26 adapted to detect the TDS value of the water in the raw tank 22. A second TDS probe suitable for detecting the temperature of water in the clean water tank 17 is further arranged between the clean water tank 17 and the water pump 12, and when the detected TDS value of the second TDS probe is higher, the fact that the water quality in the raw water tank 22 is poor or the water filtering module 20 is aged is indicated, so that the water quality in the clean water tank 17 is unqualified, and a user can replace the filter element or the water in the raw water tank 22 in time to ensure that the water quality of the water output by the water drinking device is qualified.

In a preferred embodiment, the second TDS probe is of unitary construction with the second acquisition module 16. As shown in fig. 1, a second check valve 14 is provided on the first pipe 13 at a position upstream of the water pump 12, and a flow meter 15 is provided upstream of the second check valve 14.

In this embodiment, the drinking device preferably further comprises a concentrate tank 23. The waste water outlet of the water filter module 20 is connected to a concentrate tank 23. The concentrate tank 23 can be used to contain the wastewater discharged by the water filtration module 20. A waste water solenoid valve 24 is preferably arranged between the water filter module 20 and the concentrate tank 23. The original water tank 22 and the concentrate tank 23 may be split, preferably, in this embodiment, the original water tank 22 and the concentrate tank 23 are integrally disposed, so that the number of parts in the drinking device can be reduced, and the structure in the drinking device is more compact.

Example 2

The embodiment relates to a control method of a water drinking device. The water drinking device comprises a heating module 6, a cooling module 8, a first waterway switching element 2, a release structure 1, a first collecting module 3, a second collecting module 16 and a third collecting module 7.

The control method comprises a step S1 and a step S2.

Step S1 comprises acquiring acquisition temperatures of the first acquisition module 3, the second acquisition module 16 and the third acquisition module 7.

Step S2 comprises controlling the first waterway switching element 2 to control the water outlet of the cooling module 8 to be connected with the release structure 1 or the reflux according to the 5-acquisition temperatures of the first acquisition module 3, the second acquisition module 16 and the third acquisition module 7

The pipeline 4 is connected.

Therefore, the control method of the drinking device of the present embodiment can determine whether the water at the release structure 1 is cooled according to the water temperatures collected by the first collecting module 3, the second collecting module 16 and the third collecting module 7, and

the first waterway switching element 2 is controlled to be switched to the first state upon releasing the water cooling at the structure 1. So that the water in the release 0 structure 1 can be heated again, and the water released by the release structure 1 is avoided to be cool water.

In this embodiment, the step S2 mainly includes the step S1:

the step S21 mainly includes: if the collection temperatures of the first collection module 3 and the third collection module 7 are equal to the collection temperature of the second collection module 16, the first waterway switching element 2 is controlled to connect the water outlet of the cooling module 8 with the return pipeline 4.

5 when the collection temperature of the first collection module 3 and the collection temperature of the third collection module 7 are equal to the collection temperature of the second collection module 16, the control module can judge that the water at the release structure 1 is cooled, so that the first waterway switching element 2 is controlled to be switched to a first state, the water in the release structure 1 can be reheated, and a user can be guaranteed to obtain water with proper temperature.

In this embodiment, step S2 further includes step S22:

the 0 step S22 mainly includes: if the acquisition temperatures of the first acquisition module 3 and the third acquisition module 7 are high

At the collection temperature of the second collection module 16, the first waterway switching element 2 is controlled to connect the water outlet of the cooling module 8 with the release structure 1.

Therefore, when the collection temperatures of the first collection module 3 and the second collection module 16 are higher than the collection temperature of the second collection module 16, the control module can judge that the water at the release structure 1 is not cooled, so that the first waterway switching element 2 is controlled to be switched to the second state, the water in the release structure 1 can be directly released from the cup without being heated again, a user can quickly obtain the water, and the consumption of electric energy can be reduced.

In summary, the control method of the water drinking device can overcome the defect that a part of cooling water remains in the water drinking device in the prior art, so that the temperature of the taken water is lower than the set temperature or time and water resources are wasted, and can ensure that a user can take water with proper temperature on the premise of not wasting the water resources.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims (9)

1. A water dispenser, comprising:

the water inlet end of the water pump (12) is connected with a water source through a first pipeline (13);

the heating module (6) is provided with a heating inlet communicated with the water outlet end of the water pump (12);

the hot water inlet of the cooling module (8) is connected with the heating outlet of the heating module (6);

a first waterway switching element (2) having a water inlet, a first water outlet and a second water outlet, the water inlet of which is connected to the hot water outlet of the temperature reduction module (8), the second water outlet being connected to the first pipeline (13) through a return pipeline (4), the first waterway switching element (2) having a first state in which the water inlet is in communication with the first water outlet, a second state in which the water inlet is in communication with the second water outlet;

a release structure (1) connected to the first water outlet, the release structure (1) being adapted to release water outwardly.

2. The water dispenser according to claim 1, wherein a first collecting module (3) is arranged at the releasing structure (1), the first collecting module (3) is capable of collecting the water temperature at the releasing structure (1), the water dispenser further comprises a control module, the control module is in communication connection with the first collecting module (3) and the first waterway switching element (2), and the control module is capable of controlling the first waterway switching element (2) to switch to the second state when the collecting temperature of the first collecting module (3) is equal to a preset temperature.

3. A drinking device according to claim 2, characterized in that the drinking device further comprises a clean water tank (17), the clean water tank (17) having a clean water outlet, which is connected to the water pump (12) via the first conduit (13).

4. A water dispenser according to claim 3, further comprising:

-a second acquisition module (16) adapted to acquire the water temperature at said clean water tank (17);

the third acquisition module (7) is suitable for acquiring the water temperature at the heating outlet of the heating module (6), the control module is in communication connection with the second acquisition module (16) and the third acquisition module (7), and is suitable for controlling the first waterway switching element (2) to switch to the second state when the acquisition temperatures of the first acquisition module (3) and the third acquisition module (7) are equal to the acquisition temperature of the second acquisition module (16), and controlling the first waterway switching element (2) to switch to the first state when the acquisition temperatures of the first acquisition module (3) and the third acquisition module (7) are higher than the acquisition temperature of the second acquisition module (16).

5. The water dispenser according to any one of claims 1-4, wherein the temperature reduction module (8) is a heat exchanger, a hot water inlet of the heat exchanger is connected to a heating outlet of the heating module (6), a hot water outlet of the heat exchanger is connected to a water inlet of the first waterway switching element (2), a cooling water inlet of the heat exchanger is connected to a water outlet of the water pump (12), and a cooling water outlet of the heat exchanger is connected to a heating inlet of the heating module (6).

6. The water dispenser according to claim 5, further comprising a second waterway switching element (5) arranged between the hot water inlet of the heat exchanger, the heating outlet of the heating module (6) and the water inlet of the first waterway switching element (2), the second waterway switching element (5) having a third state of communicating the heating outlet of the heating module (6) with the hot water inlet of the heat exchanger, a fourth state of connecting the heating outlet of the heating module (6) with the water inlet of the first waterway switching element (2).

7. The water dispenser according to claim 5, characterized in that the water outlet end of the water pump (12) is connected to the cooling water inlet of the heat exchanger via a second line (9) and to the heating inlet of the heating module (6) via a third line (10), and that the second line (9) and/or the third line (10) are provided with a regulating valve (11).

8. The water dispenser of claim 3 or 4, further comprising:

a raw water tank (22) adapted to contain raw water;

and the filtering inlet of the filtering module (20) is connected with the raw water outlet of the raw water tank (22), and the purified water inlet of the purified water tank (17) is connected with the purified water outlet of the filtering module (20).

9. The water dispenser according to claim 8, further comprising a concentrate tank (23), wherein the waste water outlet of the water filter module (20) is connected to the concentrate tank (23).

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