Integrated water utilization equipment

By using wastewater treatment units in integrated water use equipment, the venturi effect of the venturi pipe is used to automatically recover wastewater, which solves the problem of large volume of the equipment due to the installation of a wastewater pump, and achieves wastewater discharge and reduction of equipment volume.

CN120043250APending Publication Date: 2025-05-27GUANGDONG MACRO GAS APPLIANCE
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Patent Information

Application Number
CN202510057547.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-14
Publication Date
2025-05-27

AI Technical Summary

Technical Problem

When existing integrated water equipment is equipped with wastewater pumps, the overall volume of the equipment is large.

Method used

The wastewater treatment unit is adopted, including a wastewater tank, a first solenoid valve and a venturi pipe. The venturi effect is generated through the venturi pipe, and the wastewater in the wastewater tank is automatically pumped to the domestic water inlet, realizing the reflow and recycling of wastewater or discharged with domestic water, avoiding the use of wastewater pumps.

Benefits of technology

The wastewater discharge is achieved, reducing the overall volume and space of the equipment, while reducing cost and noise issues.

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Abstract

The invention relates to integrated water utilization equipment which comprises a combustion heat unit and a water supply unit. The clean heat unit is provided with a first wastewater outlet; the domestic pipeline is provided with a domestic water inlet and a domestic water outlet, the combustion heat unit is located between the domestic water inlet and the domestic water outlet and communicated with the domestic pipeline, the clean heat unit is communicated with the domestic water inlet, and the domestic water inlet is communicated with a main water inlet of the integrated water equipment; the wastewater treatment unit comprises a wastewater tank, a first electromagnetic valve and a Venturi tube, the Venturi tube is arranged at the domestic water inlet and communicated with the domestic pipeline, the wastewater tank is provided with a wastewater inlet and a second wastewater outlet, the first electromagnetic valve is respectively communicated with the second wastewater outlet and the Venturi tube, and the Venturi tube is communicated with the first electromagnetic valve. The wastewater inlet is communicated with the first wastewater outlet. The overall size and occupied space of the integrated water equipment can be reduced.
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Description

Technical Field

[0001] This application relates to the technical field of integrated water-using household appliances, and particularly to an integrated water-using device. Background Art

[0002] An integrated water-using device is an integrated household appliance mainly composed of a combustion heating unit and a purification heating unit, which can not only provide domestic water but also provide drinking water.

[0003] Existing integrated water-using devices usually need to filter and purify raw domestic water through the purification heating unit. However, waste water will be generated during the filtering and purification process. Therefore, in order to discharge the waste water, existing integrated water-using devices usually set a waste water tank, a drain port and a waste water pump in the integrated water-using device, so that the waste water generated by the purification heating unit can be collected in the waste water tank, and then the waste water in the waste water tank is pumped into the domestic water inlet end by the waste water pump to realize the recycling of the waste water.

[0004] However, setting a waste water pump in the integrated water-using device will make the overall volume of the integrated water-using device relatively large. Summary of the Invention

[0005] The embodiments of this application provide an integrated water-using device, aiming to solve the technical problem that setting a waste water pump in the integrated water-using device will make the overall volume of the integrated water-using device relatively large.

[0006] In a first aspect, this application provides an integrated water-using device, including:

[0007] A combustion heating unit;

[0008] A purification heating unit, which is provided with a first waste water outlet;

[0009] A domestic pipeline, which is provided with a domestic water inlet and a domestic water outlet. The combustion heating unit is located between the domestic water inlet and the domestic water outlet and is connected to the domestic pipeline. The purification heating unit is connected to the domestic water inlet, and the domestic water inlet is connected to the total water inlet of the integrated water-using device;

[0010] A waste water treatment unit, which includes a waste water tank, a first solenoid valve and a Venturi tube. The Venturi tube is arranged at the domestic water inlet and is connected to the domestic pipeline. The waste water tank is provided with a waste water inlet and a second waste water outlet. The first solenoid valve is respectively connected to the second waste water outlet and the Venturi tube, and the waste water inlet is connected to the first waste water outlet.

[0011] In some embodiments, the wastewater treatment unit further includes a first one-way valve, which is disposed between the first solenoid valve and the Venturi tube and communicates with the second wastewater outlet of the wastewater tank and the Venturi tube.

[0012] In some embodiments, the Venturi tube includes a first pipe segment, a second pipe segment, and a third pipe segment connected in sequence. The Venturi tube is provided with a water inlet and a water outlet. The water inlet is located in the first pipe segment, and the water outlet is located in the third pipe segment. The cross-sectional area of the first pipe segment is larger than that of the second pipe segment and smaller than that of the third pipe segment.

[0013] In some embodiments, the combustion heating unit includes a heat exchanger, a burner, a blower, and a combustion chamber. The heat exchanger communicates with the domestic pipeline. The heat exchanger is disposed above the combustion chamber, the burner is disposed below the combustion chamber, and the blower is located above the heat exchanger and communicates with the combustion chamber.

[0014] In some embodiments, the combustion heating unit further includes a proportional valve assembly, which is located at the bottom of the burner.

[0015] In some embodiments, the combustion heating unit further includes a first inlet water temperature sensor and a first outlet water temperature sensor. The first inlet water temperature sensor is disposed at the input end of the heat exchanger, and the first outlet water temperature sensor is disposed at the output end of the heat exchanger.

[0016] In some embodiments, the pure heating unit includes a water purification module, a booster pump, a second solenoid valve, and a second one-way valve. The second solenoid valve is disposed between the water purification module and the booster pump. The booster pump communicates with the domestic water inlet. The second one-way valve is disposed between the water purification module and the wastewater tank and communicates with the wastewater inlet and the first wastewater outlet.

[0017] In some embodiments, the pure heating unit further includes a flow control pump and an electric heater. The pure heating unit is provided with a second water outlet. The flow control pump is respectively communicated with the water purification module and the electric heater, and the electric heater is communicated with the second water outlet.

[0018] In some embodiments, the pure heating unit further includes a second inlet water temperature sensor and a second outlet water temperature sensor. The second inlet water temperature sensor is disposed at one end of the electric heater close to the flow control pump, and the second outlet water temperature sensor is disposed at one end of the electric heater far from the flow control pump.

[0019] In some embodiments, the wastewater treatment unit further includes a liquid level sensor, and a part of the liquid level sensor is disposed inside the wastewater tank.

[0020] The above technical solutions provided by the embodiments of the present application have the following advantages compared with the prior art:

[0021] The integrated water-using device provided by the embodiment of the present application includes a gas water heater unit, a purified and heated water unit, a wastewater treatment unit and a domestic pipeline. Since the wastewater treatment unit includes a wastewater tank, a first solenoid valve and a Venturi tube, the Venturi tube is arranged at the domestic water inlet and communicated with the domestic pipeline. The wastewater tank is provided with a wastewater inlet and a second wastewater outlet. The first solenoid valve is respectively communicated with the second wastewater outlet and the Venturi tube. The wastewater inlet is communicated with the first wastewater outlet. In this way, the wastewater treatment unit can generate a Venturi effect through the Venturi tube to automatically pump the wastewater in the wastewater tank to the domestic water inlet for reflux and recycling or discharge along with the domestic water, so as to achieve zero wastewater discharge, that is, the recovery and discharge of wastewater can be realized without setting a wastewater pump, thereby reducing the overall volume and occupied space of the integrated water-using device. Description of the Drawings

[0022] The drawings here are incorporated into the specification and constitute a part of this specification, showing the embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0024] One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings. These exemplary illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, unless otherwise stated, and the drawings in the drawings do not constitute a proportional limitation.

[0025] Figure 1 It is a schematic structural diagram of an integrated water-using device provided by an embodiment of the present application.

[0026] Figure 2 It is a schematic structural diagram of the flow direction from the water outlet end of the wastewater tank to the domestic water outlet end provided by an embodiment of the present application.

[0027] Description of the Reference Numerals in the Drawings

[0028] Main water inlet 1, air inlet 2, venturi tube 3, storage tray 4, water flow sensor 5, second solenoid valve 6, first water inlet temperature sensor 7, proportional valve assembly 8, burner 9, flow control pump 10, second water inlet temperature sensor 11, electric heater 12, second water outlet temperature sensor 13, drinking water outlet 14, fan 15, heat exchanger 16, first water outlet temperature sensor 17, whole machine casing 18, water purification module 19, booster pump 20, wastewater tank 21, liquid level sensor 22, domestic pipeline 23, one-way valve 24, first solenoid valve 25, first one-way valve 26, second one-way valve 27, domestic water inlet 28, domestic water outlet 29, first wastewater outlet 30, wastewater inlet 31, second wastewater outlet 32, water inlet 33, water outlet 34. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0030] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0031] For ease of description, spatial relative relationship terms may be used in the text to describe the relative positional relationship or movement of one element or feature shown in the figure with respect to another element or feature. These relative relationship terms are, for example, "inside", "outside", "inner side", "outer side", "below", "beneath", "above", "over", "front", "rear", etc. Such spatial relative relationship terms are intended to include different orientations of the device during use or operation other than the orientations depicted in the figure. For example, if the device in the figure undergoes a position flip, attitude change, or change in motion state, then these directional indications will change accordingly. For example, an element described as "below other elements or features" or "beneath other elements or features" will subsequently be oriented as "above other elements or features" or "over other elements or features". Therefore, the exemplary term "below" can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used in the text are interpreted accordingly.

[0032] An integrated water-using device is an integrated household appliance mainly composed of a gas water heater unit and a purified water heater unit. Existing integrated water-using devices not only provide domestic water but also drinking water. However, the existing integrated water-using devices filter and purify raw water through an RO membrane (reverse osmosis membrane), inevitably resulting in the problem of wastewater discharge. To facilitate the discharge of wastewater, when a conventional integrated water-using device is installed, there should be a floor drain or a drain outlet near it, which brings inconvenience to after-sales service and installation. The filtered wastewater can be directly used for domestic water or diluted and used for drinking water for recycling. The direct discharge of wastewater undoubtedly increases the waste rate of water resources.

[0033] To solve the problem that the direct discharge of wastewater increases the waste rate of water resources, the prior art usually sets a wastewater pump in a conventional integrated water-using device, and after collecting it in a water tank, pumps it to the domestic water inlet / outlet with the wastewater pump.

[0034] However, the wastewater pump not only has a high cost and high noise but also is not conducive to the miniaturization of the whole machine.

[0035] To solve the technical problem in the prior art that using a wastewater pump will make the overall volume of the integrated water-using device relatively large, the present application provides an integrated water-using device that can reduce the overall volume and occupied space of the integrated water-using device.

[0036] In addition, since there is no need to set a wastewater pump, not only can the cost be reduced, but also problems such as noise generated during pumping can be avoided.

[0037] Refer to Figure 1 - Figure 2 , the embodiment of the present application provides an integrated water-using device, including a gas water heater unit, a purified water heater unit, a domestic water pipeline 23, and a wastewater treatment unit.

[0038] Among them, the pure heat unit is provided with a first waste water outlet 30;

[0039] The domestic pipeline 23 is provided with a domestic water inlet 28 and a domestic water outlet 29. The combustion heat unit is located between the domestic water inlet 28 and the domestic water outlet 29 and is connected to the domestic pipeline 23. The pure heat unit is connected to the domestic water inlet 28, and the domestic water inlet 28 is connected to the total water inlet 1 of the integrated water using device;

[0040] The waste water treatment unit includes a waste water tank 21, a first electromagnetic valve 25 and a Venturi tube 3. The Venturi tube 3 is arranged at the domestic water inlet 28 and is connected to the domestic pipeline 23. The waste water tank 21 is provided with a waste water inlet 31 and a second waste water outlet 32. The first electromagnetic valve 25 is respectively connected to the second waste water outlet 32 and the Venturi tube 3, and the waste water inlet 31 is connected to the first waste water outlet 30.

[0041] Since the waste water treatment unit includes a waste water tank 21, a first electromagnetic valve 25 and a Venturi tube 3, the Venturi tube 3 is arranged at the domestic water inlet 28 and is connected to the domestic pipeline 23. The waste water tank 21 is provided with a waste water inlet 31 and a second waste water outlet 32. The first electromagnetic valve 25 is respectively connected to the second waste water outlet 32 and the Venturi tube 3, and the waste water inlet 31 is connected to the first waste water outlet 30. In this way, the waste water treatment unit can generate a Venturi effect through the Venturi tube 3 to automatically pump the waste water in the waste water tank 21 to the domestic water inlet 28 for reflux and recycling or discharge along with the domestic water, so as to achieve zero waste water discharge, that is, the waste water can be recycled and discharged without setting a waste water pump, thereby reducing the overall volume and occupied space of the integrated water using device.

[0042] In some embodiments, the waste water treatment unit further includes a first one-way valve 26. The first one-way valve 26 is arranged between the first electromagnetic valve 25 and the Venturi tube 3 and is connected to the second waste water outlet 32 of the waste water tank 21 and the Venturi tube 3.

[0043] In some embodiments, the Venturi tube 3 includes a first pipe section, a second pipe section and a third pipe section connected in sequence. The Venturi tube 3 is provided with a water inlet 33 and a water outlet 34. The water inlet 33 is located in the first pipe section, the water outlet 34 is located in the third pipe section, and the cross-sectional area of the first pipe section is larger than that of the second pipe section and smaller than that of the third pipe section.

[0044] In this way, the Venturi tube 3 can generate the required negative pressure through the natural flow of the fluid, sucking the wastewater into the domestic water inlet 28, so as to achieve the effect of recycling and discharging the wastewater without setting a wastewater drainage pump, reducing the demand for pumping equipment and saving energy and equipment costs.

[0045] In some embodiments, the combustion heating unit includes a heat exchanger 16, a burner 9, a blower 15 and a combustion chamber. The heat exchanger 16 is connected to the domestic pipeline 23. The heat exchanger 16 is arranged above the combustion chamber. The burner 9 is arranged below the combustion chamber. The blower 15 is located above the heat exchanger 16 and is connected to the combustion chamber.

[0046] In some embodiments, the combustion heating unit further includes a proportional valve assembly 8, and the proportional valve assembly 8 is located at the bottom of the burner 9.

[0047] Among them, the proportional valve assembly 8 is used to reasonably match with the blower 15 during the combustion process to provide the required gas volume and air volume for combustion.

[0048] In some embodiments, the combustion heating unit further includes a first inlet water temperature sensor 7 and a first outlet water temperature sensor 17. The first inlet water temperature sensor 7 is arranged at the input end of the heat exchanger 16, and the first outlet water temperature sensor 17 is arranged at the output end of the heat exchanger 16.

[0049] In some embodiments, the pure heating unit includes a water purification module 19, a booster pump 20, a second solenoid valve 6, and a second check valve 27. The second solenoid valve 6 is arranged between the water purification module 19 and the booster pump 20. The booster pump 20 is connected to the domestic water inlet 28. The second check valve 27 is arranged between the water purification module 19 and the wastewater tank 21 and is connected to the wastewater inlet 31 and the first wastewater outlet 30.

[0050] In some embodiments, the pure heating unit further includes a flow control pump 10 and an electric heater 12. The pure heating unit is provided with a second outlet 34. The flow control pump 10 is respectively connected to the water purification module 19 and the electric heater 12, and the electric heater 12 is connected to the second outlet 34.

[0051] In some embodiments, the pure heating unit further includes a second inlet water temperature sensor 11 and a second outlet water temperature sensor 13. The second inlet water temperature sensor 11 is arranged at one end of the electric heater 12 close to the flow control pump 10, and the second outlet water temperature sensor 13 is arranged at one end of the electric heater 12 far from the flow control pump 10.

[0052] In some embodiments, the wastewater treatment unit further includes a liquid level sensor 22, and a part of the liquid level sensor 22 is disposed in the wastewater tank 21.

[0053] Wherein, the liquid level sensor 22 includes an upper liquid level and a lower liquid level. When the wastewater tank 21 reaches the high liquid level, the solenoid valve 6 is opened. When the domestic water mode or the drinking water mode is turned on, a large flow of water flows into the Venturi tube 3. The Venturi effect generated by the Venturi tube 3 discharges the wastewater in the wastewater tank 21 to the domestic water inlet. It can either flow out through the domestic water outlet 34 or be filtered and purified again by the water purification module 19 after being mixed with the domestic water inlet. When the wastewater tank 21 reaches the low liquid level, the solenoid valve 6 is closed, and the Venturi tube 3 stops pumping the wastewater in the wastewater tank 21.

[0054] The above-mentioned units of the present application can be connected through corrugated pipes, copper pipes, hoses, PE pipes, etc. and perform their respective functions.

[0055] The integrated water-using equipment mentioned in the above embodiments can realize the dual water functions of domestic water and drinking water, and can recycle the wastewater generated by the reverse osmosis water purification system to achieve zero wastewater discharge. Among them, the implementation principles of domestic water, drinking water, and wastewater can be referred to as follows:

[0056] (1) Operating principle of domestic water: Tap water flows in from the bottom water inlet of the whole machine housing 18, that is, the total water inlet 1, and flows into the heat exchanger 16 through the domestic water inlet 28. The heat exchanger 16 exchanges heat with the high-temperature flue gas obtained by the combustion of the burner 9, and finally outputs the required domestic hot water from the domestic water outlet 29. During the combustion process, the blower 15 and the proportional valve assembly 8 are reasonably matched to provide the required gas volume and air volume for combustion.

[0057] In addition, the water flow sensor 5 can be used to monitor the water inlet flow, and the first temperature sensor and the second temperature sensor can be used to detect the water inlet temperature and the water outlet temperature of the domestic water pipeline 23 to achieve precise control of the water outlet temperature.

[0058] (2) Operating principle of drinking water: Tap water flows into the water purification filter element, that is, the water purification module 19. The water purification filter element is filtered and purified by the pressure provided by the booster pump 20. The pure water obtained after being filtered by the water purification filter element flows out from the drinking water outlet nozzle 14. If the drinking water heating function is required, the pure water obtained after being filtered by the water purification filter element can be input into the electric heater 12 for heating through the flow control pump 10, or flow out from the drinking water outlet nozzle 14 after heat exchange by the heat exchanger 16. The filtered wastewater flows into the wastewater tank 21 through the wastewater branch.

[0059] (3) Wastewater operation principle: The wastewater first enters the wastewater tank 21. When the wastewater tank 21 reaches the high liquid level, the solenoid valve 6 opens. When the domestic water mode or the drinking water mode is turned on, a large flow of water enters the Venturi tube 3. The Venturi effect generated by the Venturi tube 3 discharges the wastewater in the wastewater tank 21 to the domestic water inlet. It can either flow out through the domestic water outlet 34 or be filtered and purified again by the water purification module 19 after being mixed with the domestic water inlet water. When the wastewater tank 21 reaches the low liquid level, the solenoid valve 6 closes, and the Venturi tube 3 stops pumping the wastewater in the wastewater tank 21.

[0060] In the above embodiments, the descriptions of the various embodiments have their own focuses. For the parts not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0061] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0062] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined.

[0063] In the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0064] In this application, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0065] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representations of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0066] Obviously, those skilled in the art can make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to include these changes and modifications.

[0067] As described above, this is the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed by this application can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered by the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

1. An integrated water-using device, characterized in that: include: Heating unit; A heat purification unit, wherein the heat purification unit is provided with a first wastewater outlet; A living pipe, wherein the living pipe is provided with a living water inlet and a living water outlet, the heating unit is located between the living water inlet and the living water outlet and is connected to the living pipe, the heat purification unit is connected to the living water inlet, and the living water inlet is connected to the total water inlet of the integrated water equipment; A wastewater treatment unit, the wastewater treatment unit includes a wastewater tank, a first solenoid valve and a venturi tube, the venturi tube is arranged at the domestic water inlet and connected to the domestic pipeline, the wastewater tank is provided with a wastewater inlet and a second wastewater outlet, the first solenoid valve is respectively connected to the second wastewater outlet and the venturi tube, and the wastewater inlet is connected to the first wastewater outlet.

2. The integrated water use equipment according to claim 1, characterized in that: The wastewater treatment unit further includes a first one-way valve, which is disposed between the first solenoid valve and the venturi tube and is connected to a second wastewater outlet of the wastewater tank and the venturi tube.

3. The integrated water-using equipment according to claim 1, characterized in that: The venturi tube includes a first pipe section, a second pipe section and a third pipe section connected in sequence. The venturi tube is provided with a water inlet and a water outlet. The water inlet is located in the first pipe section, and the water outlet is located in the third pipe section. The cross-sectional area of ​​the first pipe section is larger than the cross-sectional area of ​​the second pipe section and smaller than the cross-sectional area of ​​the third pipe section.

4. The integrated water-using equipment according to claim 1, characterized in that: The heat unit includes a heat exchanger, a burner, a fan and a combustion chamber. The heat exchanger is connected to the living duct. The heat exchanger is arranged above the combustion chamber. The burner is arranged below the combustion chamber. The fan is located above the heat exchanger and is connected to the combustion chamber.

5. The integrated water-using equipment according to claim 4, characterized in that: The thermal unit further comprises a proportional valve assembly, and the proportional valve assembly is located at the bottom of the burner.

6. The integrated water-using equipment according to claim 1, characterized in that: The heating unit further includes a first water inlet temperature sensor and a first water outlet temperature sensor. The first water inlet temperature sensor is arranged at the input end of the heat exchanger, and the first water outlet temperature sensor is arranged at the output end of the heat exchanger.

7. The integrated water-using equipment according to claim 1, characterized in that: The heat purification unit includes a water purification module, a booster pump, a second solenoid valve, and a second one-way valve. The second solenoid valve is arranged between the water purification module and the booster pump. The booster pump is connected to the domestic water inlet. The second one-way valve is arranged between the water purification module and the wastewater tank, and is connected to the wastewater inlet and the first wastewater outlet.

8. The integrated water-using equipment according to claim 7, characterized in that: The heat purification unit also includes a flow control pump and an electric heater. The heat purification unit is provided with a second water outlet. The flow control pump is respectively connected to the water purification module and the electric heater, and the electric heater is connected to the second water outlet.

9. The integrated water-using device according to claim 8, characterized in that: The heat net unit also includes a second water inlet temperature sensor and a second water outlet temperature sensor. The second water inlet temperature sensor is arranged at one end of the electric heater close to the flow control pump, and the second water outlet temperature sensor is arranged at one end of the electric heater away from the flow control pump.

10. The integrated water-using equipment according to claim 2, characterized in that: The wastewater treatment unit also includes a liquid level sensor, and the liquid level sensor is partially disposed in the wastewater tank.