CN219136397U - Water cooking machine - Google Patents

Abstract

The utility model provides a water cooking machine, which comprises a water supply assembly; a water purifying unit; the heating unit is provided with a heating cavity, the water supply assembly is communicated with the water inlet end of the heating unit through the water purifying unit, and the heating unit is used for heating or evaporating liquid in the heating cavity; the liquid outlet end of the heating unit is communicated with the water outlet structure, and liquid or steam in the heating cavity flows towards the water outlet structure; and the steam return pipe is used for communicating the water supply assembly with the water outlet structure, and steam flows back to the water supply assembly through the steam return pipe. The boiled water machine provided by the utility model can solve the problems of low cleaning efficiency and poor instantaneity caused by water storage of a pipeline in the boiled water machine in the prior art.

Description

Water cooking machine

Technical Field

The utility model relates to the technical field related to household appliances, in particular to a water cooking machine.

Background

In the current water purifier products, the boiled water can be boiled in different temperature sections, accords with the pursuit of people on the health and safety of drinking water, and is favored by users. The water tank of the water cooking machine is exposed to sunlight for a long time, and stains such as moss and the like are easy to breed on the surface of the water tank, so that the water tank needs to be cleaned and disinfected periodically. Generally, the water tank is mainly flushed by draining the stored water through a drain valve, and the method can only simply remove stains on the surface of the water tank.

In addition, the parts and the pipeline after the heating element of the water cooking machine can be cooled to room temperature. If the user wants to drink the water at the required temperature quickly, the water can be taken after the water is drained, and the water is wasted and the instant property is not achieved.

From the above, the boiled water machine in the prior art has the problems of low cleaning efficiency and poor instantaneity caused by water storage of the pipeline.

Disclosure of Invention

The utility model mainly aims to provide a water cooking machine, which solves the problems of low cleaning efficiency and poor instantaneity caused by water storage of a pipeline in the prior art.

In order to achieve the above object, according to one aspect of the present utility model, there is provided a water harvester including a water supply assembly; a water purifying unit; the heating unit is provided with a heating cavity, the water supply assembly is communicated with the water inlet end of the heating unit through the water purifying unit, and the heating unit is used for heating or evaporating liquid in the heating cavity; the liquid outlet end of the heating unit is communicated with the water outlet structure, and liquid or steam in the heating cavity flows towards the water outlet structure; and the steam return pipe is used for communicating the water supply assembly with the water outlet structure, and steam formed after evaporation flows back to the water supply assembly through the steam return pipe.

Further, the boiled water machine also comprises a temperature regulating branch, and two ends of the temperature regulating branch are respectively communicated with the liquid outlet end of the heating unit and the water outlet structure; and the temperature adjusting device is arranged on the temperature adjusting branch path.

Further, the water supply assembly, the heating unit, the temperature adjusting device and the water outlet structure form a first water outlet channel; the water supply assembly, the heating unit and the water outlet structure form a second water outlet channel; the heating unit, the water outlet structure, the steam return pipe and the water supply assembly form a first steam loop; the heating unit, the temperature adjusting device, the water outlet structure, the steam return pipe and the water supply assembly form a second steam loop.

Further, the temperature regulating branch comprises a first temperature regulating pipeline, and the heating unit is communicated with the inlet side of the temperature regulating device through the first temperature regulating pipeline; and the outlet side of the temperature regulating device is communicated with the water outlet structure through the second temperature regulating pipeline.

Further, the boiled water machine further comprises a discharge pipe, the liquid outlet end of the heating unit is communicated with the water outlet structure through the discharge pipe, and control valves are arranged on the discharge pipe and the first temperature regulating pipe; or the boiled water machine also comprises a first double-pass electromagnetic valve, the heating unit is communicated with the liquid inlet of the first double-pass electromagnetic valve, and the two liquid outlets of the first double-pass electromagnetic valve are respectively communicated with the discharge pipe and the first temperature regulating pipeline.

Further, the water cooking machine also comprises a second double-solenoid valve, the discharge pipe and the second temperature regulating pipeline are communicated with the inlet end of the second double-solenoid valve, and the two outlet ends of the second double-solenoid valve are respectively communicated with the steam return pipe and the water outlet structure.

Further, the boiled water machine further comprises a temperature sensing bag, and the heating cavity of the heating unit and the second temperature adjusting pipeline are both provided with the temperature sensing bag.

Further, the temperature adjusting device is a heat exchanger.

Further, the temperature adjusting device is a sleeve type heat exchanger and is provided with an inner pipe and an outer pipe, and two ends of the inner pipe are communicated with a temperature adjusting branch; the water supply assembly is communicated with one end of the outer tube, and the other end of the outer tube is communicated with the heating unit.

Further, the heating unit is a PTC heating element, a rare earth thick film heating element or a metal heating tube.

Further, the water supply assembly comprises a raw water tank, the steam return pipe is communicated with the raw water tank, the raw water tank is provided with a raw water area and a waste water area, a liquid outlet of the raw water tank is communicated with the raw water area, and a liquid return port of the raw water tank is communicated with the waste water area.

Further, the water supply assembly includes a partition plate disposed inside the raw water tank and dividing the inside of the raw water tank into a raw water area and a wastewater area.

Further, the water supply assembly further includes a raw water driving pump provided on the communication pipe between the raw water area and the water purifying unit; a raw water probe provided on a communication pipe between the raw water area and the water purifying unit for detecting raw water.

Further, the water purifying unit comprises a filtering component, and a liquid outlet of the raw water tank is communicated with a liquid inlet end of the filtering component; the water purifying tank is communicated with the water purifying tank, the waste water outlet of the filtering assembly is communicated with the waste water area, and the water purifying tank is communicated with the heating unit and the outer pipe of the temperature regulating device of the boiled water machine; the water purification driving pump is arranged on a communicating pipeline between the water purification tank and the heating unit.

Further, the filter assembly is a composite filter element.

By applying the technical scheme of the utility model, the water cooking machine comprises a water supply assembly, a water purification unit, a heating unit, a water outlet structure and a steam backflow pipe, wherein the heating unit is provided with a heating cavity, the water supply assembly is communicated with the water inlet end of the heating unit through the water purification unit, the heating unit is used for heating or evaporating liquid in the heating cavity, the liquid outlet end of the heating unit is communicated with the water outlet structure, liquid or steam in the heating cavity flows towards the water outlet structure, the steam backflow pipe is used for communicating the water supply assembly and the water outlet structure, and the steam flows back to the water supply assembly through the steam backflow pipe.

From the above, the heating unit of the boiled water machine has the function of heating water, and can generate steam to heat stored water in a pipeline into steam, and the steam flows back to the inside of the original water tank of the water supply unit through the steam return pipe, so that the original water tank is cleaned and sterilized in a steam return mode, and the boiled water machine has the effect of improving the water temperature of the original water tank. The effect of consumption water storage is realized through the mode of making steam under the effect of heating unit with the water storage in the pipeline, namely after the water outlet of the first water outlet structure, the inside water that remains of pipeline can form steam under heating unit's heating to flow to former water tank in the steam back flow, after the water storage consumption in the pipeline, the water that the water outlet structure flows out of the second time is the water of preset temperature, can not receive the influence of water storage in the pipeline, has improved the instantaneity of preset temperature water, and convenience of customers uses, is favorable to increasing user experience and feels.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 shows a schematic structure of a water machine of the present utility model.

Wherein the above figures include the following reference numerals:

10. a raw water tank; 101. a raw water region; 102. a wastewater zone; 110. a partition plate; 120. a raw water driving pump; 130. a raw water probe; 210. a filter assembly; 220. a waste water electromagnetic valve; 230. a one-way valve; 240. a clean water tank; 250. a flow meter; 260. a water purifying driving pump; 270. a regulating valve; 280. a water purifying probe; 30. a temperature adjusting device; 310. a first temperature regulating pipeline; 320. a second temperature regulating pipeline; 40. a heating unit; 50. a first two-way solenoid valve; 60. a second double-solenoid valve; 70. a temperature sensor; 80. a discharge pipe; 90. and a steam return pipe.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

It is noted that all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless otherwise indicated.

In the present utility model, unless otherwise indicated, terms of orientation such as "upper, lower, top, bottom" are used generally with respect to the orientation shown in the drawings or with respect to the component itself in the vertical, upright or gravitational direction; also, for ease of understanding and description, "inner and outer" refers to inner and outer relative to the profile of each component itself, but the above-mentioned orientation terms are not intended to limit the present utility model.

The utility model provides a water-boiling machine for solving the problems of low cleaning efficiency and poor instantaneity caused by water storage of a pipeline in the water-boiling machine in the prior art. The water cooking machine can be used in the industrial field and also in the household field.

As shown in fig. 1, the boiled water machine includes a water supply assembly, a water purifying unit, a heating unit 40, a water outlet structure and a steam return pipe 90, the heating unit 40 has a heating cavity, the water supply assembly is communicated with a water inlet end of the heating unit 40 through the water purifying unit, the heating unit 40 is used for heating or evaporating liquid in the heating cavity, a liquid outlet end of the heating unit 40 is communicated with the water outlet structure, liquid or steam in the heating cavity flows towards the water outlet structure, the steam return pipe 90 is used for communicating the water supply assembly and the water outlet structure, and steam flows back to the water supply assembly through the steam return pipe 90.

Specifically, the heating unit 40 of the boiled water machine of the present application has not only a function of heating water, but also steam generated by the heating unit 40 to heat the stored water in the pipeline into steam, and the steam is returned to the inside of the raw water tank 10 of the water supply unit through the steam return pipe 90, so that cleaning and sterilization of the raw water tank 10 are achieved through the steam return, and an effect of improving the water temperature of the raw water tank 10 is provided. The effect of consumption water storage is realized through the mode of making steam under the effect of heating unit 40 with the water storage in the pipeline, namely after the water outlet of the first time water outlet structure, the inside water that remains of pipeline can form steam under heating unit 40's heating to flow to former water tank 10 in steam back flow 90, after the water storage in the pipeline consumes, the water that the second time water outlet structure flows out is the water of preset temperature, can not receive the influence of water storage in the pipeline, has improved the instantaneity of preset temperature water, and convenience of customers uses, is favorable to increasing user experience and feels.

Further, the water supplied from the water supply assembly is purified by the water purifying unit to form purified water, and the formed purified water flows to the heating unit 40, and the purified water is heated to form water of different temperatures.

Further, the steam return pipe 90 is connected with a pipeline at the water outlet structure, so that steam flowing to the water outlet structure can enter the steam return pipe 90 at the water outlet structure, and the steam can flow back to the inside of the raw water tank 10 of the water supply assembly through the steam return pipe 90. Wherein the water outlet structure can realize the water outlet function.

In the embodiment, the water cooking machine is provided with a water outlet mode and a steam backflow mode, and when the water cooking machine is in the water outlet mode, the water outlet structure provides water outwards; when the water machine is in the steam reflux mode, steam flowing to the water outlet structure flows to the raw water tank 10 through the steam reflux pipe 90.

It should be noted that, in the process of realizing steam backflow, when steam is liquefied after being cooled in the steam backflow pipe 90, under the action of steam airflow, gas and liquid will flow to the original water tank 10 at the same time, and the steam cleaning of the inner wall of the original water tank 10 and the steam sterilization can be realized unevenly, and meanwhile, the function of recovering water vapor and supplementing liquid can be realized.

Steam cleaning is to clean the surface of an article in the form of steam. It can reduce the viscosity of silt and stains so as to quickly dissolve the silt and the stains; simultaneously, the surface of the article can reach an ultra-clean state by vaporizing and evaporating the article. Compared with the common cleaning, the steam cleaning can also play a role in sterilization and disinfection.

As shown in fig. 1, the water heater of the present application has the function of providing water at different temperatures, and further includes a temperature adjusting branch and a temperature adjusting device 30, wherein two ends of the temperature adjusting branch are respectively communicated with the liquid outlet end of the heating unit 40 and the water outlet structure, and the temperature adjusting device 30 is disposed on the temperature adjusting branch.

Specifically, the temperature regulating branch and the temperature regulating device 30 are arranged to introduce the liquid heated by the heating unit 40 into the temperature regulating branch, and the temperature of the water heated by the heating unit is reduced by the temperature regulating device 30, so that the water flowing through the temperature regulating branch is low-temperature water.

Further, by providing the temperature regulating branch and the temperature regulating device 30, when high-temperature water is needed, water of the heating unit 40 directly flows to the water outlet structure without passing through the temperature regulating branch, and the water at the moment is the high-temperature water heated by the heating unit 40; when low-temperature water is needed, the water heated by the heating unit 40 does not directly flow to the water outlet structure but flows to the temperature regulating branch.

Further, the temperature adjusting device 30 is a heat exchanger, and the temperature of the high-temperature water heated by the heating unit 40 is reduced by the heat exchanger.

Wherein the temperature adjusting device 30 is a sleeve type heat exchanger, the temperature adjusting device 30 is provided with an inner pipe and an outer pipe, and two ends of the inner pipe are communicated on a temperature adjusting branch; the water supply assembly communicates with one end of the outer tube and the other end of the outer tube communicates with the heating unit 40. The inlet end of the inner tube is communicated with the first temperature regulating pipeline 310, and the outlet end of the inner tube is communicated with the second temperature regulating pipeline 320. The liquid of the water supply assembly enters into the inside of the outer pipe to achieve the technical effect of heat exchange with the high-temperature liquid in the inside of the inner pipe, and flows into the heating unit 40 to be heated after the heat exchange of the liquid in the inside of the outer pipe is completed, and the heated liquid directly flows into the water outlet structure or flows into the water outlet structure through the temperature adjusting device 30.

Of course, the temperature adjusting device 30 is not limited to the above-mentioned double pipe heat exchanger, and other temperature adjusting devices 30 having a temperature reducing effect may be used to reduce the temperature of the liquid.

Further, temperature sensors 70 are arranged in the heating cavity and on the temperature regulating branch, so that water temperature detection on the temperature is realized.

In the present embodiment, the water supply assembly, the heating unit 40, the temperature adjusting device 30, and the water outlet structure form a first water outlet channel; the water supply assembly, the heating unit 40 and the water outlet structure form a second water outlet channel; the heating unit 40, the water outlet structure, the steam return pipe 90 and the water supply assembly form a first steam loop; the heating unit 40, the temperature regulating device 30, the water outlet structure, the steam return pipe 90, and the water supply assembly form a second steam circuit. The first water outlet channel is used for discharging low-temperature water, the second water outlet channel is used for discharging high-temperature water, the first steam loop is used for removing water stored in the second water outlet channel, and the second steam loop is used for removing water stored in the first water outlet channel.

As shown in fig. 1, the temperature regulating branch circuit includes a first temperature regulating pipeline 310 and a second temperature regulating pipeline 320, the heating unit 40 is communicated with the inlet side of the temperature regulating device 30 through the first temperature regulating pipeline 310, and the outlet side of the temperature regulating device 30 is communicated with the water outlet structure through the second temperature regulating pipeline 320.

Specifically, the water heated inside the heating chamber of the heating unit 40 enters the temperature adjusting device 30 through the first temperature adjusting pipe 310 for cooling treatment, and the cooled water flows to the water outlet structure through the second temperature adjusting pipe 320, wherein the second temperature adjusting pipe is provided with the temperature sensor 70 for detecting the water temperature.

Further, the boiled water machine further comprises a discharge pipe 80, and the liquid outlet end of the heating unit 40 is communicated with the water outlet structure through the discharge pipe 80.

In a specific implementation manner of this embodiment, control valves are disposed on the drain pipe 80 and the first temperature adjusting pipeline 310, and control valves are disposed on the drain pipe 80 and the first temperature adjusting pipeline 310 respectively to control on-off, so as to control whether the water outlet structure outputs high-temperature water or low-temperature water, and both the drain pipe 80 and the first temperature adjusting pipeline 310 are not conducted simultaneously.

In another specific implementation manner of this embodiment, the water cooking machine further includes a first two-way electromagnetic valve 50, the heating unit 40 is communicated with a liquid inlet of the first two-way electromagnetic valve 50, and two liquid outlets of the first two-way electromagnetic valve 50 are respectively communicated with the discharge pipe 80 and the first temperature regulating pipeline 310.

Specifically, the control of the flow direction of the water heated by the heating structure is achieved by using the first two-way solenoid valve 50, and the flow direction of the steam formed by the heating unit 40 is controlled by the first two-way solenoid valve 50.

In this embodiment, the water machine further includes a second double-solenoid valve 60, the discharge pipe 80 and the second temperature-adjusting pipe 320 are connected to an inlet end of the second double-solenoid valve 60, and two outlet ends of the second double-solenoid valve 60 are connected to the steam return pipe 90 and the water outlet structure, respectively.

When water is required to be discharged, the discharge pipe 80 and the second temperature-adjusting pipe 320 can supply water to the water outlet structure through the second two-way solenoid valve 60, and when steam is required to be returned, the discharge pipe 80 and the second temperature-adjusting pipe 320 can supply steam to the steam return pipe 90 through the second two-way solenoid valve 60.

In the present embodiment, the heating unit 40 is a PTC heating element, a rare earth thick film heating element, or a metal heating tube.

As shown in fig. 1, the water supply assembly includes a raw water tank 10, a steam return pipe 90 is communicated with the raw water tank 10, the raw water tank 10 has a raw water area 101 and a waste water area 102, a liquid outlet of the raw water tank 10 is communicated with the raw water area 101, and a liquid return outlet of the raw water tank 10 is communicated with the waste water area 102.

Specifically, the water in the raw water area 101 in the raw water tank 10 supplies water to the water purifying unit, and when the raw water is filtered by the water purifying unit, the filtered purified water is stored in the purified water tank 240, and the wastewater flows back to the wastewater area 102 in the raw water tank 10, so that the wastewater is collected, and the concentrated discharge in the later period is facilitated.

Further, the steam reflux pipe 90 is communicated with the raw water tank 10, that is, steam refluxed by the steam reflux pipe 90 enters the raw water area 101 and the waste water area 102, so that the sterilizing box in the two areas is cleaned.

Further, the water supply assembly includes a partition plate 110 provided inside the raw water tank 10 and dividing the inside of the raw water tank 10 into a raw water area 101 and a wastewater area 102.

Further, a liquid level sensor is provided inside the raw water area 101 to detect a liquid level height inside the raw water area 101 by the liquid level sensor, to stop water supply to the water purification unit when the liquid level height inside the raw water area 101 is low, and to alarm by a controller control alarm to prompt water shortage information.

In the present embodiment, the water supply assembly further includes a raw water driving pump 120 and a raw water probe 130, the raw water driving pump 120 being disposed on a communication pipe between the raw water region 101 and the water purifying unit to provide a driving force for the flow of raw water, the raw water probe 130 being disposed on the communication pipe between the raw water region 101 and the filter assembly 210 for detecting raw water.

As shown in fig. 1, the water purifying unit includes a filter assembly 210, a clean water tank 240, and a clean water driving pump 260, a liquid outlet of the raw water tank 10 is communicated with a liquid inlet end of the filter assembly 210, a clean water outlet of the filter assembly 210 is communicated with the clean water tank 240, a wastewater outlet of the filter assembly 210 is communicated with the wastewater area 102, the clean water tank 240 is communicated with the heating unit 40 and an outer pipe of the temperature adjusting device 30 of the boiled water machine, and the clean water driving pump 260 is disposed on a communicating pipe between the clean water tank 240 and the heating unit 40.

Specifically, the filter assembly 210 has a function of filtering water, and purified water stored in the purified water tank 240 after being filtered by the filter assembly 210 flows in a direction of the heating unit 40 and the temperature adjusting device 30 by the driving of the purified water driving pump 260.

Further, the filter assembly 210 is a composite filter element.

Further, a first check valve 230 is provided at a connection pipe between the filtering assembly 210 and the fresh water tank 240 to make the fresh water flow toward the fresh water tank 240 in one direction and to be stored in the fresh water tank 240, and a level sensor is provided at the inside of the fresh water tank 240 to detect the height of the liquid in the fresh water tank 240, so that the raw water driving pump 120 is regulated by the controller to accelerate the preparation of the fresh water when the liquid is low.

Further, a waste solenoid valve 220 is provided on a line through which the filter assembly 210 communicates with the waste region 102.

In this embodiment, the water purifying unit further includes a water purifying driving pump 260, a water purifying probe 280, and a second check valve 230, the water purifying driving pump 260 is disposed on a communication line between the water purifying tank 240 and the heating unit 40, the water purifying probe 280 is disposed on a line between the water purifying driving pump 260 and the water purifying tank 240, and the second check valve 230 is disposed on a line between the water purifying driving pump 260 and the water purifying tank 240.

The water purifying driving pump 260 provides driving force for the water purifying flowing so that the water purifying flows unidirectionally, and the water purifying probe 280 is a probe and bulb integrated type probe, i.e. the water purifying probe 280 can detect the water quality of the water purifying and can detect the water temperature.

Further, a flow meter 250 is provided on a pipeline between the clean water driving pump 260 and the clean water tank 240, and the flow meter 250 is used for detecting and displaying water flow information.

Further, a regulating valve 270 is provided in a pipe line between the water purifying driving pump 260 and the heating unit 40, and a flow rate flowing toward the heating unit 40 is regulated by the regulating valve 270.

When water is stored in the steam removal line, the heating unit 40 heats the water to form steam, and the steam flows along the line between the heating unit 40 and the water outlet structure.

In this embodiment, when the user stops receiving water for the first time, the heating unit 40 is started and heats the water in the heating cavity into steam, and the water in the pipeline is discharged to the water outlet structure to be taken away by the user under the pushing of the steam, so as to achieve the effect of removing the stored water. When the user receives water for the second time, no water exists in the pipeline between the heating unit 40 and the water outlet structure, so that when the user takes water, the first section of gas which is discharged firstly begins to receive water, and the phenomenon that the water temperature is influenced by the water existing in the pipeline is avoided when the water at the preset water level temperature.

From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects:

the heating unit 40 of the boiled water machine has the function of heating water, meanwhile, the heating unit 40 can generate steam to heat stored water in a pipeline into steam, the steam flows back to the inside of the raw water tank 10 of the water supply unit through the steam backflow pipe 90, the raw water tank 10 is cleaned and sterilized in a steam backflow mode, and the water temperature of the raw water tank 10 is improved. The effect of consumption water storage is realized through the mode of making steam under the effect of heating unit 40 with the water storage in the pipeline, namely after the water outlet of the first time water outlet structure, the inside water that remains of pipeline can form steam under heating unit 40's heating to flow to former water tank 10 in steam back flow 90, after the water storage in the pipeline consumes, the water that the second time water outlet structure flows out is the water of preset temperature, can not receive the influence of water storage in the pipeline, has improved the instantaneity of preset temperature water, and convenience of customers uses, is favorable to increasing user experience and feels.

It will be apparent that the embodiments described above are merely some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or described herein.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (15)

1. A water harvester, comprising:

a water supply assembly;

a water purifying unit;

a heating unit (40), wherein the heating unit (40) is provided with a heating cavity, the water supply assembly is communicated with the water inlet end of the heating unit (40) through the water purifying unit, and the heating unit (40) is used for heating or evaporating liquid in the heating cavity;

a water outlet structure, wherein the liquid outlet end of the heating unit (40) is communicated with the water outlet structure, and liquid or steam in the heating cavity flows towards the water outlet structure;

the steam backflow pipe (90), the steam backflow pipe (90) is used for communicating the water supply assembly with the water outlet structure, and steam formed after evaporation flows back to the water supply assembly through the steam backflow pipe (90).

2. The water harvester of claim 1, wherein the water harvester further comprises:

the two ends of the temperature regulating branch are respectively communicated with the liquid outlet end of the heating unit (40) and the water outlet structure;

and the temperature adjusting device (30) is arranged on the temperature adjusting branch circuit.

3. The water-boiling machine according to claim 2, wherein,

the water supply assembly, the heating unit (40), the temperature regulating device (30) and the water outlet structure form a first water outlet channel;

the water supply assembly, the heating unit (40) and the water outlet structure form a second water outlet channel;

the heating unit (40), the water outlet structure, the steam return pipe (90) and the water supply assembly form a first steam loop;

the heating unit (40), the temperature regulating device (30), the water outlet structure, the steam return pipe (90) and the water supply assembly form a second steam loop.

4. The water turbine of claim 2, wherein the temperature conditioning branch comprises:

a first temperature control line (310), through which the heating unit (40) communicates with the inlet side of the temperature control device (30);

and the outlet side of the temperature regulating device (30) is communicated with the water outlet structure through the second temperature regulating pipeline (320).

5. The water turbine as claimed in claim 4, further comprising a drain pipe (80), wherein the liquid outlet end of the heating unit (40) is in communication with the water outlet structure through the drain pipe (80),

wherein control valves are arranged on the discharge pipe (80) and the first temperature regulating pipeline (310); or alternatively

The water cooking machine further comprises a first double-pass electromagnetic valve (50), the heating unit (40) is communicated with a liquid inlet of the first double-pass electromagnetic valve (50), and two liquid outlets of the first double-pass electromagnetic valve (50) are respectively communicated with the discharge pipe (80) and the first temperature regulating pipeline (310).

6. The water turbine of claim 5 further comprising a second double-solenoid valve (60), wherein the drain pipe (80) and the second temperature regulating line (320) are in communication with an inlet end of the second double-solenoid valve (60), and wherein two outlet ends of the second double-solenoid valve (60) are in communication with the steam return pipe (90) and the water outlet structure, respectively.

7. The water turbine as claimed in claim 4, further comprising a bulb, wherein the bulb is provided on both the heating chamber of the heating unit (40) and the second temperature regulating line (320).

8. The water machine as claimed in claim 2, characterized in that the temperature regulating device (30) is a heat exchanger.

9. The water machine according to claim 2, characterized in that the temperature regulating device (30) is a sleeve heat exchanger, the temperature regulating device (30) having an inner tube and an outer tube, both ends of the inner tube being connected to the temperature regulating branch; the water supply assembly is in communication with one end of the outer tube, and the other end of the outer tube is in communication with the heating unit (40).

10. The water dispenser as claimed in claim 1, wherein the heating unit (40) is a PTC heater, a rare earth thick film heater or a metal heating tube.

11. The water turbine as claimed in any one of claims 1 to 10, wherein the water supply assembly comprises a raw water tank (10), the steam return pipe (90) is communicated with the raw water tank (10), the raw water tank (10) is provided with a raw water area (101) and a waste water area (102), a liquid outlet of the raw water tank (10) is communicated with the raw water area (101), and a liquid return port of the raw water tank (10) is communicated with the waste water area (102).

12. The water machine according to claim 11, characterized in that the water supply assembly comprises a partition plate (110), the partition plate (110) being provided inside the raw water tank (10) and dividing the inside of the raw water tank (10) into a raw water area (101) and a waste water area (102).

13. The water harvester of claim 11, wherein the water supply assembly further comprises:

a raw water drive pump (120), the raw water drive pump (120) being provided on a communication pipe between the raw water region (101) and the water purification unit;

a raw water probe (130), the raw water probe (130) being provided on a communication pipe between the raw water region (101) and the water purifying unit for detecting raw water.

14. The water dispenser of claim 11, wherein the water purifying unit comprises:

the liquid outlet of the raw water tank (10) is communicated with the liquid inlet end of the filtering component (210);

a clean water tank (240), a clean water outlet of the filter assembly (210) being in communication with the clean water tank (240), a waste water outlet of the filter assembly (210) being in communication with the waste water zone (102), the clean water tank (240) being in communication with the heating unit (40) and an outer tube of a tempering device (30) of the water machine;

and a clean water drive pump (260), wherein the clean water drive pump (260) is arranged on a communicating pipeline between the clean water tank (240) and the heating unit (40).

15. The machine of claim 14, wherein the filter assembly (210) is a composite filter cartridge.

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