Heat purification all-in-one machine

Abstract

The utility model discloses a purifying and heating all-in-one machine which is provided with a raw water inlet and comprises a filtering unit with a filter element; the heating device comprises a heating cavity and a heating body, a water inlet of the heating cavity is communicated with the pure water outlet of the filtering unit, and the heating cavity is provided with a reflux inlet for discharging hot water to the filtering unit; the cooling device comprises a water storage cavity, and the raw water inlet is communicated with the filtering unit through the water storage cavity; one end of the backflow pipeline is communicated with the backflow opening, the other end of the backflow pipeline is communicated with a fluid path between the water storage cavity and the filtering unit, and at least partial area of the backflow pipeline is arranged in the water storage cavity in a penetrating mode. According to the heat purifying and purifying all-in-one machine, hot water which is not taken for a long time and needs to be emptied can flow back to the filtering unit to be filtered and reused, water resources can be saved, water flow waste is reduced, the emptied hot water participates in heat exchange, heat damage to the filtering unit due to the fact that the water temperature is too high is avoided, and the service life of the filtering unit is prolonged. And the water production capacity and the anti-freezing performance of the filtering unit can be improved.

Description

Technical Field

[0001] The present application belongs to the technical field of water purification equipment, and specifically relates to an all-in-one water purification and heating machine. Background Art

[0002] With economic development and the improvement of living standards, consumers are paying more and more attention to healthy water use and drinking water, and their requirements for water use are getting higher and higher. As a water treatment equipment that can deeply filter and purify water according to water use requirements, water purifiers are recognized and favored by more and more consumers. At present, there is a kind of all-in-one water purifier and heat machine on the market, which enables consumers to take both normal temperature purified water and hot water at the same time, and gradually replaces the old-fashioned water purifiers with a single water purification function. This type of all-in-one water purifier and heat machine usually includes a filtering device, a heating device and other functional units for filtering and heating. Its working principle is that the filter element of the filtering device heats the purified water after filtering the raw water through the heating device, so that the function of hot water can be realized after connecting to the faucet. However, when the hot water in the heating device is not used for a long time, in order to ensure the quality of the water, the hot water in the heating device needs to be emptied. Most of the existing all-in-one water purifiers and heat machines use hot water to be directly discharged into the sewer, resulting in a waste of water resources. Utility Model Content

[0003] The present application provides a heat and water purifier in one, so as to improve or solve the technical problem that hot water which has not been used for a long time is directly discharged into the sewer, thus causing water waste.

[0004] The technical solution adopted in this application is:

[0005] A water purification and heating integrated machine has a raw water inlet, comprising: a filter unit with a filter element; a heating device, comprising a heating chamber and a heating element, the water inlet of the heating chamber is connected to the pure water outlet of the filter unit, and the heating chamber is provided with a reflux port for discharging hot water to the filter unit; a cooling device, comprising a water storage chamber, the raw water inlet is connected to the filter unit through the water storage chamber; a reflux pipeline, one end of the reflux pipeline is connected to the reflux port, and the other end is connected to the fluid path between the water storage chamber and the filter unit, and at least a part of the reflux pipeline is passed through the water storage chamber.

[0006] The heat and air purifier in this application also includes the following additional technical features:

[0007] The integrated air conditioner and heat machine further comprises a suction structure, and the heating device can suck hot water toward the filter unit through the suction structure.

[0008] The suction structure is set as an ejector, which includes an injection pipeline and a suction port arranged on the side of the injection pipeline, the injection pipeline is connected to the fluid path between the water storage chamber and the filter unit, and the return pipeline is connected to the suction port; or, the suction structure is set as a water pump, and the water pump is arranged on the fluid path of the return pipeline.

[0009] The cooling device includes a water tank, the water storage cavity is formed in the water tank, the water tank is provided with a raw water inlet and a raw water outlet respectively connected to the water storage cavity, the raw water inlet is arranged at the bottom of the water tank, the raw water outlet is arranged at the top of the water tank, and the return pipeline includes a heat exchange pipe section located in the water storage cavity.

[0010] The heat exchange pipe section has a hot water inlet and a hot water outlet, and the fluid path between the hot water inlet and the hot water outlet is arranged in the water storage cavity in a spiral structure.

[0011] The hot water inlet and the hot water outlet are both arranged at the same end of the water tank.

[0012] A first solenoid valve is arranged on the fluid path of the return pipeline, and a second solenoid valve is arranged on the fluid path from the filter unit to the heating chamber.

[0013] The integrated water purifier and heat machine also includes a normal temperature water pipeline and a faucet. The pure water outlet of the filter unit is connected to the faucet through the normal temperature water pipeline, and the heating device is connected to the faucet through a hot water pipeline. A water pump is provided on the fluid path of the hot water pipeline.

[0014] A normal temperature water outlet channel and a hot water outlet channel are arranged in the faucet, the normal temperature water pipeline is communicated with the normal temperature water outlet channel, and the hot water pipeline is communicated with the hot water outlet channel.

[0015] The filtration unit includes a pre-filter element and a reverse osmosis filter element. A third solenoid valve and a booster pump are arranged on the fluid path between the pre-filter element and the reverse osmosis filter element. The reverse osmosis filter element is connected to a wastewater discharge pipeline. A fourth solenoid valve is arranged on the fluid path of the wastewater discharge pipeline.

[0016] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0017] 1. The application provides a heat and water purifier, wherein the heating chamber is provided with a reflux port for discharging hot water to the filter unit, one end of the reflux pipe is connected to the reflux port, and the other end is connected to the fluid path between the water storage chamber and the filter unit. Therefore, when the hot water in the heating chamber needs to be emptied and processed because it has not been taken for a long time, there is no need to discharge the hot water into the sewer and waste it. Instead, the hot water can be returned to the filter unit through the reflux pipe and re-filtered and reused, which helps to save water resources and reduce water waste. In addition, a cooling device is also provided, which includes a water storage chamber, and a raw water inlet is connected to the filter unit through the water storage chamber. Therefore, when the raw water inlet enters the raw water, the raw water enters the filter unit after passing through the water storage chamber. A large amount of raw water is stored in the water storage chamber, and the reflux pipe is used to filter the raw water again. At least a portion of the flow pipeline is passed through the water storage chamber, so that in the process of the hot water in the heating chamber flowing back toward the filter unit through the return pipeline, the hot water in the return pipeline exchanges heat with the raw water at normal temperature in the water storage chamber, thereby cooling the hot water and heating the raw water. The advantage of cooling the hot water is that it can be cooled to a water temperature that the filter unit can withstand, avoiding thermal damage to the filter unit due to excessive water temperature. The advantage of heating the raw water is that the water production capacity of the filter unit (especially the filter unit containing a reverse osmosis filter element) is proportional to the water temperature. The higher the raw water temperature, the higher the water production capacity of the filter element. Moreover, in winter, the increased raw water temperature can both prevent freezing and improve water production capacity. At the same time, the increased raw water temperature can also improve the flushing effect when flushing the reverse osmosis membrane.

[0018] 2. As a preferred embodiment of the present application, the heating device can suck the hot water toward the filter unit through the suction structure, so that the hot water can flow back from the heating chamber to the filter unit, and especially can be mixed with the raw water and enter the filter unit for filtration. However, since the raw water has a fast flow rate and a large flow rate when entering, it hinders the reflux of the hot water. Therefore, the setting of the suction device can pressurize the hot water to promote the hot water to mix with the raw water and enter the filter unit.

[0019] 3. As a preferred embodiment of the present application, the water tank is provided with a raw water inlet and a raw water outlet respectively connected to the water storage chamber. The raw water inlet is arranged at the bottom of the water tank, and the raw water outlet is arranged at the top of the water tank, so that the water storage chamber forms a flow pattern of raw water entering from bottom to top. Therefore, the principle of cold water sinking can be utilized to stir the water flow in the water storage chamber well, thereby improving the heat exchange efficiency of the raw water and the hot water in the return pipeline.

[0020] 4. As a preferred embodiment of the present application, the heat exchange pipe section has a hot water inlet and a hot water outlet, and the fluid path between the hot water inlet and the hot water outlet is arranged in a spiral structure in the water storage chamber, so that within the limited space in the water storage chamber, the length of the heat exchange pipe section is extended as much as possible and the area of ​​the heat exchange pipe section in the water storage chamber is increased to achieve sufficient heat exchange between the raw water and the hot water.

[0021] 5. As a preferred embodiment of the present application, a normal temperature water outlet channel and a hot water outlet channel are provided in the faucet, the normal temperature water pipeline is connected with the normal temperature water outlet channel, and the hot water pipeline is connected with the hot water outlet channel. By making the faucet discharge hot water through the hot water outlet channel and discharge normal temperature water through the normal temperature water outlet channel, the hot water and normal temperature water are discharged in different areas, which is convenient for users to distinguish whether the faucet discharges normal temperature water or hot water, and avoids the situation that the hot water in the reflux pipeline exchanges heat with the raw water in the water storage chamber, resulting in the raw water being heated up and then filtered and discharged, and the clean water having a certain temperature may cause users to confuse hot water with normal temperature water. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0023] Figure 1 A water circuit diagram of a heat and air purifier in one embodiment of the present application;

[0024] Figure 2 This is a schematic structural diagram of an assembly component formed by a water tank and a heat exchange pipe segment in one embodiment of the present application;

[0025] Figure 3 A cross-sectional view of an assembly formed by a water tank and a heat exchange pipe section in one embodiment of the present application;

[0026] Figure 4 This is a schematic diagram of the structure of a heat exchange tube section in one implementation manner of the present application.

[0027] List of parts and reference numerals:

[0028] 11 raw water inlet, 12 heating device, 13 water storage chamber, 14 reflux pipeline, 141 heat exchange pipe section, 1411 hot water inlet, 1412 hot water outlet, 15 ejector, 16 water tank, 161 raw water inlet, 162 raw water outlet, 17 first solenoid valve, 18 second solenoid valve, 19 normal temperature water pipeline, 21 faucet, 22 water pump, 23 pre-filter element, 24 reverse osmosis filter element, 25 third solenoid valve, 26 booster pump, 27 fourth solenoid valve. DETAILED DESCRIPTION

[0029] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features in each embodiment may be combined with each other without conflict.

[0031] In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present application.

[0032] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0034] In the embodiment of the present application, a heat and air purifier is provided. For the convenience of explanation and understanding, the following contents provided in the present application are all explained on the basis of the illustrated product structure. Of course, it can be understood by those skilled in the art that the above structure is only used as a specific example and schematic description, and cannot constitute a specific limitation on the technical solution provided in the present application.

[0035] like Figures 1 to 4As shown, a water purification and heating integrated machine has a raw water inlet 11, includes a filter unit with a filter element, a heating device 12, a cooling device and a reflux pipeline 14, wherein the heating device 12 includes a heating chamber and a heating element, the water inlet of the heating chamber is connected to the pure water outlet of the filter unit, and the heating chamber is provided with a reflux port for discharging hot water to the filter unit; the cooling device includes a water storage chamber 13, and the raw water inlet 11 is connected to the filter unit through the water storage chamber 13; one end of the reflux pipeline 14 is connected to the reflux port, and the other end is connected to the fluid path between the water storage chamber 13 and the filter unit, and at least a part of the reflux pipeline 14 is arranged in the water storage chamber 13.

[0036] The integrated water purification and heating machine provided in the present application has a filtering unit for filtering raw water such as municipal tap water entering from the raw water inlet 11. The filtered clean water or pure water can be transported to the heating chamber in the heating device 12 and heated by the heating element to provide hot water for users. When the user has not used the hot water in the heating chamber for a long time, the hot water in the heating chamber needs to be drained. Therefore, in the present application, the heating chamber is provided with a reflux port for discharging hot water to the filter unit. One end of the reflux pipe 14 is connected to the reflux port, and the other end is connected to the fluid path between the water storage chamber 13 and the filter unit. Therefore, when the hot water in the heating chamber needs to be drained because it has not been used for a long time, there is no need to discharge the hot water into the sewer and waste it. Instead, the hot water can flow back to the filter unit through the reflux pipe 14 and be re-filtered and reused, which helps to save water resources and reduce water waste. In addition, a cooling device is also provided. The cooling device includes a water storage chamber 13. The raw water inlet 11 is connected to the filter unit through the water storage chamber 13. Therefore, when the raw water inlet 11 enters the raw water, the raw water enters the filter unit after passing through the water storage chamber 13. A large amount of raw water is stored in the cavity 13, and at least a part of the return pipe 14 is arranged in the water storage cavity 13, so that, in the process of the hot water in the heating cavity flowing back toward the filter unit through the return pipe 14, the hot water in the return pipe 14 exchanges heat with the raw water at normal temperature in the water storage cavity 13, so that the hot water is cooled and the raw water is heated. Among them, the advantage of cooling the hot water is that it can be cooled to a water temperature that the filter unit can withstand, avoiding thermal damage to the filter unit due to excessive water temperature, and the advantage of heating the raw water is that the water production capacity of the filter unit (especially the filter unit containing a reverse osmosis filter element) is proportional to the water temperature. The higher the raw water temperature, the higher the water production capacity of the filter element. Moreover, when it is winter, the increased raw water temperature can both prevent freezing and improve the water production capacity. At the same time, the increased raw water temperature can also improve the flushing effect when flushing the reverse osmosis membrane.

[0037] As a preferred embodiment of the present application, the integrated heat and air purifier further includes a suction structure, and the heating device 12 can suck the hot water to the filter unit through the suction structure. It can be understood by those skilled in the art that the heating device 12 can suck the hot water to the filter unit through the suction structure, so that the hot water can flow back from the heating chamber to the filter unit, and can especially be mixed with the raw water and enter the filter unit for filtration. However, since the raw water has a fast flow rate and a large flow rate when entering the water, it hinders the reflux of the hot water. Therefore, the setting of the suction device can pressurize the hot water to promote the hot water to mix with the raw water and enter the filter unit.

[0038] It should be noted that the present application does not specifically limit the suction structure, and it can adopt any one of the following embodiments:

[0039] Embodiment 1: Figure 1 As shown, the suction structure is set as an ejector 15, and the ejector 15 includes an injection pipeline and a suction port arranged on the side of the injection pipeline. The injection pipeline is connected to the fluid path between the water storage chamber 13 and the filter unit, and the return pipeline 14 is connected to the suction port. In this embodiment, the return of hot water from the heating chamber is mainly driven by the raw water. Specifically, in the process of transporting raw water from the water storage chamber 13 to the filter unit, the hot water return mode in the heating chamber is enabled, wherein the raw water flows toward the filter unit through the injection pipeline of the ejector 15 at a high flow rate and a large flow rate, thereby forming a negative pressure at the suction port. The hot water in the return pipeline 14 can be driven into the injection pipeline by the negative pressure and mixed with the raw water and then flows toward the filter unit together.

[0040] Embodiment 2: Although not shown in the attached drawings, the suction structure may be a water pump, which is arranged on the fluid path of the return pipe. The hot water in the heating chamber may be sucked toward the filter unit by the suction force of the water pump. Of course, since the hot water itself is made by heating the filtered clean water, in actual operation, the water pump may be used to suck the hot water until it is mixed with the raw water so that the hot water and the raw water flow toward the filter unit together.

[0041] As a preferred implementation of the present application, Figures 2 to 4As shown, the cooling device includes a water tank 16, the water storage chamber 13 is formed in the water tank 16, and the water tank 16 is provided with a raw water inlet 161 and a raw water outlet 162 respectively connected to the water storage chamber 13, the raw water inlet 161 is arranged at the bottom of the water tank 16, and the raw water outlet 162 is arranged at the top of the water tank 16, and the return pipeline 14 includes a heat exchange pipe section 141 located in the water storage chamber 13. It can be understood by those skilled in the art that the raw water inlet 161 is arranged at the bottom of the water tank 16, and the raw water outlet 162 is arranged at the top of the water tank 16, so that the water storage chamber 13 forms a flow pattern of raw water entering from the bottom and exiting from the top. Therefore, the cold water sinking principle can be used to stir the water flow in the water storage chamber 13 well. In other words, the cold water has a sinking tendency in the water storage chamber 13, and the raw water enters from the bottom of the water storage chamber 13. Therefore, the upward trend and sinking tendency of the raw water inlet form an antagonistic effect, thereby forming a better stirring phenomenon, thereby improving the heat exchange efficiency of the raw water and the hot water in the return pipe 14.

[0042] Furthermore, if Figure 3 and Figure 4 As shown, the heat exchange pipe section 141 has a hot water inlet 1411 and a hot water outlet 1412, and the fluid path between the hot water inlet 1411 and the hot water outlet 1412 is arranged in a spiral structure in the water storage chamber 13, so that within the limited space in the water storage chamber 13, the length of the heat exchange pipe section 141 is extended as much as possible and the area of ​​the heat exchange pipe section 141 in the water storage chamber 13 is increased, so that the raw water and hot water can fully exchange heat.

[0043] Preferably, if Figure 3 As shown, the hot water inlet 1411 and the hot water outlet 1412 are both arranged at the same end of the water tank 16. On the one hand, the length of the overall flow path of the heat exchange pipe section 141 can be extended as much as possible to further improve the heat exchange effect. On the other hand, it is also helpful to arrange the pipeline connected to the upstream of the hot water inlet 1411 and the pipeline connected to the downstream of the hot water outlet 1412 on the same side of the water tank 16, thereby simplifying the water channel structure and improving the compactness of the water channel arrangement.

[0044] As a preferred implementation of the present application, Figure 1 As shown, a first solenoid valve 17 is provided on the fluid path of the reflux pipeline 14, and a second solenoid valve 18 is provided on the fluid path from the filter unit to the heating chamber. Specifically, when the hot water in the heating chamber needs to be drained, the first solenoid valve 17 needs to be opened to open the fluid path of the reflux pipeline 14, so that the hot water can flow back. The second solenoid valve 18 can control the on-off of the fluid path from the filter unit to the heating chamber. When the heating device 12 needs to be heated, the second solenoid valve 18 is opened so that the pure water or clean water filtered by the filter unit can enter the heating chamber.

[0045] As a preferred implementation of the present application, Figure 1 As shown, the air-purifying and heating integrated machine further includes a normal temperature water pipeline 19 and a faucet 21. The pure water outlet of the filter unit is connected to the faucet 21 through the normal temperature water pipeline 19, and the heating device 12 is connected to the faucet 21 through a hot water pipeline. A water pump 22 is provided on the fluid path of the hot water pipeline. Through this arrangement, the pure water or purified water filtered by the filter unit can be delivered to the heating device 12 for heating, and can also be delivered to the faucet 21 through the normal temperature water pipeline 19 to provide normal temperature pure water to the user. The water pump 22 can pump the hot water heated in the heating device 12 to the faucet 21 to provide hot water to the user.

[0046] In a preferred embodiment, a normal temperature water outlet channel and a hot water outlet channel are provided in the faucet 21, the normal temperature water pipeline 19 is connected to the normal temperature water outlet channel, and the hot water pipeline is connected to the hot water outlet channel.

[0047] What those skilled in the art can understand is that the clean water discharged after filtering has a certain temperature because the raw water is heated due to the heat exchange between the hot water in the return pipe 14 and the raw water in the water storage chamber 13. Therefore, whether the clean water is discharged from the faucet 21 after heating or discharged from the faucet 21 without heating, it has a certain temperature. Therefore, by making the faucet 21 discharge hot water through the hot water outlet channel and discharge normal temperature water through the normal temperature water outlet channel, the hot water and normal temperature water are discharged in different areas, which makes it easy for users to distinguish whether the faucet 21 discharges normal temperature water or hot water, and avoids users from confusing hot water and normal temperature water.

[0048] Regarding the structure of the filter unit, as a preferred embodiment of the present application, Figure 1 As shown, the filtration unit includes a pre-filter element 23 and a reverse osmosis filter element 24, a third solenoid valve 25 and a booster pump 26 are provided on the fluid path between the pre-filter element 23 and the reverse osmosis filter element 24, the reverse osmosis filter element 24 is connected to a wastewater discharge pipeline, and a fourth solenoid valve 27 is provided on the fluid path of the wastewater discharge pipeline. The pre-filter element 23 and the reverse osmosis filter element 24 realize double filtration, so that the filtration unit can produce pure water. During filtration, the fourth solenoid valve 27 can be opened so that the wastewater generated by the reverse osmosis filter element 24 can be discharged through the wastewater discharge pipeline.

[0049] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0050] Each embodiment in this specification is described in a progressive manner, and the same and similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A heat and water purification machine, having a raw water inlet, characterized in that: include: A filter unit with a filter element; A heating device, comprising a heating chamber and a heating element, wherein a water inlet of the heating chamber is connected to a pure water outlet of the filter unit, and the heating chamber is provided with a reflux port for discharging hot water to the filter unit; The cooling device comprises a water storage chamber, wherein the raw water inlet is connected to the filter unit through the water storage chamber; A reflux pipeline, one end of which is connected to the reflux port, and the other end of which is connected to the fluid path between the water storage cavity and the filter unit, and at least a portion of the reflux pipeline is disposed in the water storage cavity.

2. The heat and air conditioning machine according to claim 1, characterized in that: A suction structure is also included, and the heating device can suck hot water toward the filter unit through the suction structure.

3. The heat and air conditioning machine according to claim 2, characterized in that: The suction structure is configured as an ejector, the ejector comprising an ejection pipeline and a suction port arranged at a side of the ejection pipeline, the ejection pipeline is connected to the fluid path between the water storage chamber and the filter unit, and the return pipeline is connected to the suction port; Alternatively, the suction structure is configured as a water pump, and the water pump is disposed on a fluid path of the return pipeline.

4. The heat and air conditioning machine according to claim 1, characterized in that: The cooling device includes a water tank, the water storage cavity is formed in the water tank, the water tank is provided with a raw water inlet and a raw water outlet respectively connected to the water storage cavity, the raw water inlet is arranged at the bottom of the water tank, the raw water outlet is arranged at the top of the water tank, and the return pipeline includes a heat exchange pipe section located in the water storage cavity.

5. The heat and air conditioning machine according to claim 4, characterized in that: The heat exchange pipe section has a hot water inlet and a hot water outlet, and the fluid path between the hot water inlet and the hot water outlet is arranged in the water storage cavity in a spiral structure.

6. The heat and air conditioning machine according to claim 5, characterized in that: The hot water inlet and the hot water outlet are both arranged at the same end of the water tank.

7. The heat and air conditioning machine according to any one of claims 1 to 6, characterized in that: A first solenoid valve is arranged on the fluid path of the return pipeline, and a second solenoid valve is arranged on the fluid path from the filter unit to the heating chamber.

8. The heat and air conditioning machine according to any one of claims 1 to 6, characterized in that: It also includes a normal temperature water pipeline and a faucet. The pure water outlet of the filter unit is connected to the faucet through the normal temperature water pipeline. The heating device is connected to the faucet through a hot water pipeline. A water pump is provided on the fluid path of the hot water pipeline.

9. The integrated heat and air conditioner according to claim 8, characterized in that: A normal temperature water outlet channel and a hot water outlet channel are arranged in the faucet, the normal temperature water pipeline is communicated with the normal temperature water outlet channel, and the hot water pipeline is communicated with the hot water outlet channel.

10. The heat and air conditioning machine according to any one of claims 1 to 6, characterized in that: The filtration unit includes a pre-filter element and a reverse osmosis filter element. A third solenoid valve and a booster pump are arranged on the fluid path between the pre-filter element and the reverse osmosis filter element. The reverse osmosis filter element is connected to a wastewater discharge pipeline. A fourth solenoid valve is arranged on the fluid path of the wastewater discharge pipeline.

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