Water purifier and control method

Abstract

The present application discloses a water purifier and a control method. The water purifier includes: a filtering mechanism; the filtering mechanism has a raw water inlet, a filtered water outlet, and a waste water outlet; a flushing mechanism that can be connected to the raw water inlet; the flushing mechanism can flush the filtering mechanism; a recovery mechanism that can be connected to the waste water outlet; the recovery mechanism can recover and store the water discharged from the waste water outlet when flushing the filtering mechanism. The water purifier and control method provided by the present application can effectively reduce the TDS of the water discharged by the water purifier when it is turned on, and improve the water efficiency of the water purifier.

Description

Technical Field

[0001] The present application relates to the field of water purification, and in particular to a water purifier and a control method thereof. Background Art

[0002] For existing water purifiers, especially large-flow tankless water purifiers, the raw water flowing into the raw water inlet is filtered through the reverse osmosis membrane device during use, the filtered water flows out from the filtered water inlet, and the wastewater is discharged from the wastewater outlet. When the water purifier is not in use, the concentrated wastewater remains on the wastewater side of the reverse osmosis membrane that plays a filtering role in the reverse osmosis membrane device. After a certain period of time, the salt or other soluble solids in the wastewater will penetrate the reverse osmosis membrane and reach the filtered water side of the reverse osmosis membrane. In this way, when the water purifier is in use again, the total dissolved solids (TDS) of the first cup of filtered water that flows out when the water purifier starts to be used is high, which may cause the quality of the cup of filtered water to be low and not pure enough.

[0003] To solve the above problems, some water purifiers flush the wastewater side of the reverse osmosis membrane with filtered water or raw water after water production is completed, so that the wastewater side is filled with raw water or filtered water, thereby reducing the TDS of the water after startup. However, the water purifier continues to discharge water during the flushing process, resulting in low water efficiency of the water purifier.

[0004] In addition, the water purifier continues to discharge water after the user turns off the machine, which can easily cause inconvenience to the user and reduce the user experience. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, it is necessary for the present invention to provide a water purifier and a control method, so as to effectively reduce the TDS of the water output by the water purifier when it is turned on, and improve the water efficiency of the water purifier.

[0006] The technical solution of this application is as follows:

[0007] A water purifier, comprising:

[0008] A filtering mechanism; the filtering mechanism has a raw water inlet, a filtered water outlet, and a waste water outlet;

[0009] A flushing mechanism that can be connected to the raw water inlet; the flushing mechanism can flush the filtering mechanism;

[0010] A recovery mechanism that can be communicated with the wastewater outlet; the recovery mechanism can recover and store water discharged from the wastewater outlet when flushing the filtering mechanism.

[0011] As a preferred embodiment, the wastewater outlet is connected to a wastewater discharge pipe; a wastewater discharge pipe is provided with a wastewater discharge switch; and the wastewater discharge switch is closed when the flushing mechanism flushes the filtering mechanism.

[0012] As a preferred embodiment, the recovery mechanism can also be connected to the raw water inlet; the recovery mechanism does not recover water from the wastewater outlet and supply water to the raw water inlet at the same time.

[0013] As a preferred embodiment, the flushing mechanism includes a first storage space for storing filtered water; the first storage space supplies water to the raw water inlet and inputs water from the filtered water outlet at the same time; the filtered water outlet is connected to a filtered water output pipe connected to the water use end; the first storage space is connected to the filtered water output pipe.

[0014] As a preferred embodiment, the wastewater outlet is connected to the raw water inlet through a first pipe; a first valve assembly is provided on the first pipe;

[0015] The first pipeline inputs the wastewater flowing out of the wastewater outlet into the raw water inlet when producing filtered water in the first containing space.

[0016] As a preferred embodiment, the wastewater discharge pipe shares a portion of the pipe with the first pipe; a wastewater proportioner is provided on the shared portion of the pipe, or a wastewater proportioner is provided on the non-shared portion of the wastewater discharge pipe.

[0017] As a preferred implementation, the wastewater proportioner is connected in parallel with an electromagnetic switch valve.

[0018] As a preferred embodiment, the recovery mechanism includes a second storage space for storing flushing waste water; the first storage space and the second storage space are not connected to each other, and the volume of the second storage space is negatively correlated with the volume of the first storage space.

[0019] As a preferred embodiment, there is also a booster pump; the water outlet of the booster pump is connected to the raw water inlet; the first pipeline is connected to the water inlet of the booster pump, and further connected to the raw water inlet.

[0020] As a preferred embodiment, the second accommodating space is connected to the water inlet of the boosting pump through a second pipe; and the second accommodating space is connected to the first pipe through the second pipe to be connected to the wastewater outlet.

[0021] As a preferred embodiment, the water inlet of the booster pump is connected to a raw water input pipeline;

[0022] The first pipeline and the second pipeline are connected to the raw water input pipeline through a first connection point;

[0023] The raw water input pipeline is provided with a second valve assembly downstream of the first connection point.

[0024] As a preferred embodiment, the filtered water output pipeline is connected to the raw water input pipeline through a third pipeline; the second connection point between the third pipeline and the raw water input pipeline is located between the second valve assembly and the booster pump;

[0025] The filtered water output pipeline is connected in series with a first one-way valve between the second connection point and the filtered water outlet;

[0026] The third connection point between the third pipeline and the filtered water output pipeline is located between the filtered water outlet and the first accommodating space; the third pipeline is provided with a third valve assembly;

[0027] The filtered water outlet and the first accommodating space can be connected to the raw water inlet via the third pipe, so as to input filtered water into the raw water inlet for flushing.

[0028] As a preferred embodiment, a booster pump is also provided;

[0029] The water inlet of the booster pump is connected to a first filter assembly having the first accommodation space;

[0030] The first accommodating space can also recycle and store the water discharged from the wastewater outlet when flushing the filtering mechanism after the filtered water is discharged, so as to form the recovery mechanism.

[0031] As a preferred embodiment, the water inlet of the boost pump is connected to the raw water input pipeline; the first filter component is connected in series to the raw water input pipeline; and the fourth connection point between the first pipeline and the raw water input pipeline is located between the first filter component and the boost pump.

[0032] As a preferred embodiment, the water inlet end of the first filter assembly is connected to the wastewater outlet through a fourth pipe; a third valve assembly is provided on the fourth pipe;

[0033] The fourth pipeline shares a portion of the pipeline with the first pipeline; the third valve component is located downstream of the shared portion of the pipeline; and the first valve component is located downstream of the shared portion of the pipeline.

[0034] As a preferred embodiment, the water inlet end of the first filter assembly is also connected to the filtered water outlet through a fifth pipe; a fifth valve assembly is provided on the fifth pipe.

[0035] As a preferred embodiment, the filtered water outlet is also connected to the water inlet of the boosting pump through a sixth pipe; a sixth valve assembly is provided on the sixth pipe; the sixth pipe and the fifth pipe share a portion of the pipe; the fifth valve assembly is located downstream of the shared portion of the pipe; and the sixth valve assembly is located downstream of the shared portion of the pipe.

[0036] As a preferred embodiment, the second containing space is connected in series to the first pipeline; the first valve assembly is located downstream of the second containing space; and the wastewater discharge pipeline of the non-common part is connected between the first valve assembly and the second containing space.

[0037] As a preferred embodiment, the first accommodating space is connected to the water inlet of the boosting pump through a seventh pipe; a seventh valve assembly is provided on the seventh pipe; the seventh pipe shares a portion of the pipe with the first pipe; and the seventh valve assembly is located upstream of the shared portion of the pipe.

[0038] As a preferred implementation, the first accommodating space is connected to the filtered water output pipe through an eighth pipe; a second one-way valve is provided on the eighth pipe.

[0039] As a preferred embodiment, the water purifier has a water bag assembly; the water bag assembly has a accommodating space and a water bag located in the accommodating space; the interior of the water bag forms the first accommodating space; and the exterior of the water bag forms a second accommodating space.

[0040] A control method for a water purifier, wherein the water purifier has a filtering mechanism, wherein the filtering mechanism has a raw water inlet, a filtered water outlet, and a waste water outlet; the control method for the water purifier comprises:

[0041] Flushing the filter mechanism of the water purifier;

[0042] The water discharged from the wastewater outlet when flushing the filter mechanism is recovered and stored.

[0043] As a preferred embodiment, it also includes:

[0044] When flushing the filtering mechanism, the water purifier does not discharge waste water.

[0045] As a preferred embodiment, it also includes:

[0046] Inputting the recovered and stored water into the filtering mechanism to prepare flushing and filtering water;

[0047] Correspondingly, flushing the filter mechanism of the water purifier includes: flushing the filter mechanism using the flushing filtered water.

[0048] As a preferred embodiment, the flushing and filtering water is prepared for a first predetermined time; and the filtering mechanism is flushed for a second predetermined time.

[0049] As a preferred embodiment, when the recovered and stored water is input into the filtering mechanism to prepare flushing filtered water, the water purifier does not discharge waste water and does not discharge filtered water.

[0050] As a preferred embodiment, the filtering mechanism for flushing the water purifier includes:

[0051] When flushing the filter mechanism, the filtered water discharged from the filtered water outlet flushes the filter mechanism together with the flushing filtered water.

[0052] As a preferred embodiment, it also includes:

[0053] The recovered and stored water is discharged from the water purifier.

[0054] As a preferred embodiment, the water purifier has a storage mechanism; the control method further includes:

[0055] Inputting the water in the storage mechanism into the filtering mechanism to prepare flushing and filtering water;

[0056] Correspondingly, the filtering mechanism for flushing the water purifier includes and the water discharged from the wastewater outlet when the filtering mechanism is flushed includes:

[0057] flushing the filtering mechanism using the flushing filtered water;

[0058] The storage mechanism is utilized to recover and store the water discharged from the wastewater outlet when the filtering mechanism is flushed.

[0059] Beneficial effects:

[0060] The water purifier in the present application is provided with a flushing mechanism and a recovery mechanism, and the raw water and / or filtered water introduced by the flushing mechanism flows directly from the raw water inlet to the wastewater outlet, thereby pushing the high-concentration water (wastewater) originally retained in the raw water inlet of the filtering mechanism to the wastewater outlet (wastewater side) and discharging it from the inside of the filtering mechanism, so that the raw water and / or filtered water remains on the wastewater side of the filtering mechanism (filter membrane), thereby ensuring that the TDS of the filtered water produced when the water purifier is just started to produce water will not be too high, thereby improving the quality of drinking water.

[0061] At the same time, the water purifier in this application is also provided with a recycling mechanism, which recycles the flushing wastewater flowing out of the wastewater outlet. The recycled flushing wastewater can be used to flush and produce filtered water, avoiding the discharge and waste of this part of the flushing wastewater, thereby improving the water efficiency of the water purifier.

[0062] In addition, the first valve assembly on the first pipe of the water purifier in the present application can control the flushing speed to achieve a better flushing effect.

[0063] In addition, in this application, if the shutdown time exceeds the preset time, the water purifier will restart and automatically flush to ensure low TDS when it starts. At the same time, the water purifier in this application will discharge flushing wastewater after flushing a certain number of times or a preset time to avoid excessively high concentration of wastewater affecting the life of the membrane or reducing the TDS effect.

[0064] With reference to the following description and accompanying drawings, specific embodiments of the present invention are disclosed in detail, indicating the manner in which the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications and equivalents.

[0065] Features described and / or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0066] It should be emphasized that the term “include / comprises” when used herein refers to the presence of features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps or components. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying creative labor.

[0068] Figure 1 This is a normal water production water path diagram of a water purifier provided in one embodiment of the present application;

[0069] Figure 2 yes Figure 1 The waterway diagram for preparing flushing and filtering water;

[0070] Figure 3 yes Figure 1 Water circuit diagram of flushing and filtering mechanism;

[0071] Figure 4 It is a normal water production water circuit diagram of a water purifier provided in another embodiment of the present application;

[0072] Figure 5 yes Figure 4 The waterway diagram for preparing flushing and filtering water;

[0073] Figure 6 yes Figure 4 Water circuit diagram of flushing and filtering mechanism;

[0074] Figure 7 It is a normal water production water circuit diagram of a water purifier provided in another embodiment of the present application;

[0075] Figure 8 yes Figure 7 The waterway diagram for preparing flushing and filtering water;

[0076] Fig. 9 yes Figure 7 Water circuit diagram of flushing and filtering mechanism. DETAILED DESCRIPTION

[0077] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0078] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be another element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be another element centered thereon at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0079] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0080] See also Figure 1-Figure 9 The present application provides a water purifier in an embodiment, comprising: a filter mechanism 5; the filter mechanism 5 has a raw water inlet, a filtered water outlet, and a waste water outlet; a flushing mechanism that can be connected to the raw water inlet; the flushing mechanism can flush the filter mechanism 5; a recovery mechanism that can be connected to the waste water outlet; the recovery mechanism can recover and store water discharged from the waste water outlet when the filter mechanism 5 is flushed.

[0081] The present application also provides a control method for a water purifier. The water purifier has a filter mechanism 5, and the filter mechanism 5 has a raw water inlet, a filtered water outlet, and a wastewater outlet. The control method for the water purifier includes the steps of: flushing the filter mechanism 5 of the water purifier; and recycling and storing the water discharged from the wastewater outlet when flushing the filter mechanism 5.

[0082] In the embodiment of the present application, the flushing mechanism can use raw water and / or filtered water to flush the filter mechanism 5. Among them, when the water purifier is in a normal water-generating state, the filter mechanism 5 of the water purifier can flow water through the raw water inlet (the water can be raw water from upstream, such as tap water, or raw water filtered by a pre-filter component; it can also be other water, such as water recovered by a recovery mechanism), and filter the water to form filtered water, and the filtered water is discharged from the filtered water outlet, and correspondingly, the wastewater (or concentrated water) generated by the filter mechanism 5 flows out from the wastewater outlet. Among them, from the raw water inlet to the wastewater outlet, the TDS concentration of the water increases.

[0083] When the water purifier is not producing water, in order to prevent the ions in the concentrated water on the wastewater side (the side connected to the wastewater outlet) of the filter membrane (also called the membrane) of the filter mechanism 5 from penetrating through the filter membrane into the filtered water side, causing the TDS concentration of the filtered water to increase after the machine is turned on, the water purifier enters the cleaning mode. The flushing mechanism operates to input flushing water (raw water and / or filtered water) into the raw water inlet of the filter mechanism 5, and the filter mechanism 5 is flushed with raw water and / or filtered water. At this time, the water purifier does not discharge filtered water, but does not limit whether the filtered water outlet discharges water.

[0084] Among them, the raw water and / or filtered water introduced by the flushing mechanism flows directly from the raw water inlet to the wastewater outlet, thereby pushing the high-concentration water (wastewater) originally retained in the raw water inlet of the filter mechanism 5 to the wastewater outlet (wastewater side) and discharging it from the inside of the filter mechanism 5, so that the raw water and / or filtered water remains on the wastewater side (filter membrane) of the filter mechanism 5.

[0085] In this case, both the wastewater side and the filtered water side are filtered water or raw water and filtered water. The TDS of the water on the wastewater side is smaller. Therefore, during the process of not making water or shut down, the water on the wastewater side has less impact on the TDS of the filtered water on the filtered water side, thereby ensuring that the TDS of the filtered water produced when the water purifier is just started will not be too high, thereby improving the quality of drinking water.

[0086] At the same time, the water purifier in this embodiment is also provided with a recovery mechanism, which recycles the flushing wastewater flowing out of the wastewater outlet. The recovered flushing wastewater can be used to flush and produce filtered water, avoiding the discharge and waste of this part of the flushing wastewater, thereby improving the water efficiency of the water purifier.

[0087] Please continue reading Figure 1-Figure 9 The recycling mechanism can recycle and store the water discharged when flushing the filter mechanism 5 to improve the water efficiency of the water purifier. When flushing the filter mechanism 5, the water output from the wastewater outlet of the filter mechanism 5 can be called flushing wastewater to distinguish it from the wastewater generated when the filter mechanism 5 produces water normally. In this embodiment, recycling and storing the water discharged from the wastewater outlet when flushing the filter mechanism 5 means: recycling and storing the flushing wastewater discharged when flushing the filter mechanism 5.

[0088] When the water purifier recycles and stores the flushing waste water while flushing the filter mechanism 5 through the recovery mechanism, the recovery mechanism can return and store all (flushing) water discharged from the filter mechanism 5, or return and store part of the flushing waste water, at which time part of the flushing waste water can be discharged from the wastewater discharge pipe 200. Preferably, the recovery mechanism can recycle all the flushing waste water so that flushing the filter mechanism 5 does not affect the water efficiency of the water purifier.

[0089] As an example of schematic nature, the recovery mechanism and the filter mechanism 5 can form a circulating closed-loop waterway during flushing (other components can be connected in series on the waterway, such as a water booster pump 4 for driving the waterway), and all the flushing wastewater is recovered and stored. In addition, the recovery mechanism and the filter mechanism 5, the wastewater discharge pipe 200 (which has a combined solenoid valve, and the combined solenoid valve has the functions of throttling and switching. Specifically, the combined solenoid valve can include a parallel electromagnetic switch valve 15 and a wastewater proportioner 8.), at this time, through the throttling effect of the wastewater proportioner 8 on the combined solenoid valve, part of the flushing wastewater of the filter mechanism 5 is recovered by the recovery mechanism, and part of the flushing wastewater is discharged out of the water purifier through the wastewater discharge pipe 200.

[0090] In an embodiment, the filter mechanism can be flushed for a second predetermined time, so that the filter mechanism can be flushed by controlling the flushing time. Specifically, flushing the filter mechanism 5 of the water purifier can be stopped at the second predetermined time, and correspondingly, recycling and storing the water discharged from the wastewater outlet when flushing the filter mechanism 5 also stops. Flushing the filter mechanism 5 can be achieved by controlling the operation of the booster pump 4 (or the duration of the state of the corresponding valve switch).

[0091] To ensure the improvement of water efficiency, the water purifier does not discharge wastewater when flushing the filter mechanism 5. Specifically, the wastewater outlet is connected to a wastewater discharge pipe 200. A wastewater discharge switch 9 may be provided on the wastewater discharge pipe 200. The wastewater discharge switch 9 is closed when the flushing mechanism flushes the filter mechanism 5. For the convenience of automatic control, the wastewater discharge switch 9 may be an electromagnetic switch valve.

[0092] In order to avoid the filtered water being discharged after the water purifier is turned off, the water purifier does not discharge the filtered water when flushing the filtering mechanism 5. Accordingly, the filtered water outlet is connected to a filtered water output pipe 300, and the end of the filtered water output pipe 300 is connected to a water-using end, such as a faucet, a shower, etc. At this time, the faucet and other water-using end equipment of the water purifier are in a closed state. Of course, a water valve 7 (which may include a faucet or a water solenoid valve) is provided near the water-using end of the filtered water output pipe 300, and the water valve 7 is in a closed state when flushing the filtering mechanism 5.

[0093] It can be seen that when flushing the filter mechanism 5, the water purifier neither discharges filtered water nor waste water, does not affect (does not reduce) the overall water efficiency of the water purifier, and can better reduce the startup TDS.

[0094] In this embodiment, the flushing mechanism can replace the concentrated water between the raw water inlet and the wastewater outlet with raw water and / or filtered water, and the concentrated water originally retained in the filter mechanism 5 is discharged from the wastewater outlet, so that the wastewater side or the raw water side of the filter membrane contacts the raw water and / or filtered water instead of concentrated water. After being discharged from the wastewater outlet, the water originally retained in the filter mechanism 5 can be directly discharged to the recovery mechanism through a preset pipeline, so that water can be produced again after the machine is started.

[0095] In the embodiment of the present application, the flushing mechanism can use raw water to flush the filter mechanism 5, so that the wastewater side of the filter mechanism 5 is filled with raw water. The flushing mechanism can also use filtered water to flush the filter mechanism 5, so that the wastewater side of the filter mechanism 5 is filled with filtered water. In addition, the flushing mechanism can also use mixed water of raw water and filtered water to flush the filter mechanism 5, so that the wastewater side of the filter mechanism 5 is filled with mixed water. Considering that the TDS content in filtered water is the lowest compared to raw water and mixed water, flushing the filter mechanism 5 with filtered water can fill the wastewater side with filtered water, and then the wastewater side and the filtered water side of the filter mechanism 5 are both filtered water. The water quality of the filtered water side hardly changes during the shutdown of the water purifier, thereby maximizing the water quality of the filtered water side.

[0096] In a preferred embodiment, the flushing mechanism can use filtered water to flush the filter mechanism 5. The filtered water used by the flushing mechanism can be filtered water (also called pure water) formed by the filtering mechanism 5, or filtered water formed by other filtering components (such as nanofiltration membrane elements, ultrafiltration membrane elements, microfiltration membrane elements, ion membrane elements, etc.).

[0097] Considering that when flushing the filter mechanism 5, the water pressure generated by the operation of the booster pump 4 will form a certain amount of filtered water on the filtered water side of the filter mechanism 5. In order to utilize this part of filtered water to improve the water efficiency of the water purifier, when flushing the filter mechanism 5, the filtered water discharged from the filtered water outlet is used together with the flushing filtered water to flush the filter mechanism 5.

[0098] Preferably, in order to make the water quality on both sides of the wastewater side and the filtered water side of the filter mechanism 5 the same, the flushing mechanism uses the filtered water produced by the filter mechanism 5 to flush the filter mechanism 5 as a preferred solution. To distinguish it from the filtered water used by the user, the filtered water used to flush the filter mechanism 5 can be called "flushing filtered water". Accordingly, the first accommodation space 12 described below is used to accommodate the flushing filtered water.

[0099] Specifically, the flushing mechanism may include a first accommodation space 12 for storing (flushing) filtered water. The first accommodation space 12 does not simultaneously supply water to the raw water inlet and input water from the filtered water outlet. The filtered water outlet may be connected to a filtered water output pipe 300 connected to a water end. The first accommodation space 12 is connected to the filtered water output pipe 300.

[0100] In this embodiment, the first storage space 12 of the flushing mechanism is connected to the filtered water outlet, so that the filtered water produced by the filtering mechanism 5 can be input into the first storage space 12. The water purifier can output filtered water to the user's water end while replenishing water into the first storage space 12. At this time, the filtered water output from the filtered water outlet of the filtering mechanism 5 is partially output to the user's water end, and partially output to the first storage space 12.

[0101] In addition, to avoid affecting the water consumption of the user, the water purifier can have a separate water replenishment mode (or water replenishment time) for inputting filtered water into the first storage space 12. In this water replenishment mode, the filtering mechanism 5 inputs all the normally produced filtered water into the first storage space 12. This water replenishment mode can be operated after the user stops using water and does not interfere with the user's normal use.

[0102] When the filter mechanism 5 needs to be rinsed, the first accommodating space 12 is connected to the raw water inlet of the filter mechanism 5, and the stored rinse filtered water is input into the filter mechanism 5 through the raw water inlet. Considering that the rinse is performed after the water is made, the first accommodating space 12 does not supply water to the raw water inlet of the filter mechanism 5 and input water from the filtered water outlet at the same time.

[0103] In order to effectively utilize the flushing waste water recovered by the recovery mechanism, the water used to flush the filter mechanism 5 is completely recycled to avoid wasting flushing waste water, thereby effectively improving the water efficiency of the water purifier. The recovery mechanism can also be connected to the raw water inlet. The recovery mechanism does not simultaneously supply water to the raw water inlet and recover water from the waste water outlet.

[0104] When the recovery mechanism is connected to the raw water inlet, the filter mechanism 5 can be in a state of producing filtered water, and the filtered water can be used by the user, that is, output through the water purifier. In addition, the filtered water can also be used to rinse the filter mechanism 5, and is stored by the water purifier itself to form rinse filtered water to reduce the TDS of the water output when the machine is turned on.

[0105] In a preferred embodiment, the water purifier inputs the recycled and stored water into the filter mechanism 5 to prepare flushing and filtered water; and the flushing and filtered water is used to flush the filter mechanism 5 of the water purifier, so as not to affect the overall water efficiency of the water purifier. In this embodiment, the water purifier inputs the recycled and stored water into the filter mechanism 5 to prepare flushing and filtered water until the first predetermined time stops, and can also stop when a predetermined amount is reached, for example, the recycled and stored water is exhausted.

[0106] In such Figure 4-Figure 6 In the embodiment shown, considering that the flushing filtered water and the recovered flushing water share the same space, in order to avoid the flushing filtered water and the flushing water or the raw water from flowing into each other and affecting the water quality of the flushing filtered water, the steps of preparing the flushing filtered water and flushing the filtering mechanism 5 in this embodiment can be controlled by time, that is, preparing the flushing filtered water for a first predetermined time and flushing the filtering mechanism for a second predetermined time.

[0107] In the embodiment of the present application, the water purifier can input the recycled and stored water into the filter mechanism 5 to produce flushing and filtered water. The flushing wastewater recovered by the recovery mechanism can be reused to produce flushing and filtered water. When producing flushing and filtered water, the water purifier can discharge the wastewater to ensure that the flushing and filtered water has a lower TDS. Accordingly, the water purifier can input raw water while inputting the flushing wastewater into the filter mechanism 5, and input the raw water and the flushing wastewater into the filter mechanism 5 together to produce flushing and filtered water.

[0108] In the embodiment, in order to improve the water efficiency, when the water purifier inputs the recycled and stored water into the filtering mechanism 5 to prepare the flushing filtered water, the water purifier does not discharge waste water and does not discharge filtered water. In this way, the water efficiency of the water purifier is not affected when preparing the flushing filtered water, and the TDS of the flushing filtered water is low, which meets the requirement of reducing the startup TDS.

[0109] Specifically, while preparing the flushing filtered water, the wastewater discharged from the filter mechanism 5 through the wastewater outlet can also be re-input into the filter mechanism 5 for use. Thus, zero wastewater discharge from the water purifier is achieved when preparing the flushing filtered water. The water purifier inputs the flushing wastewater and the wastewater output from the filter mechanism 5 into the filter mechanism 5 to prepare the flushing filtered water.

[0110] like Figure 1-Figure 9 In a specific embodiment, the wastewater outlet can be connected to the raw water inlet through a first pipe 400; the first pipe 400 is provided with a first valve assembly 10 ( Figure 1-Figure 3 The first pipe 400 inputs the waste water flowing out of the waste water outlet to the raw water inlet when the filtered water of the first containing space 12 is produced.

[0111] In this embodiment, the first valve assembly 10 is closed during normal water production, and is opened to improve water efficiency when flushing and filtering water is produced after shutdown (user stops using water) and when flushing the filtering mechanism 5. The first valve assembly 10 can be an electromagnetic switch valve, or a combination of an electromagnetic switch valve and a one-way valve in series, wherein the one-way valve can prevent liquid backflow.

[0112] In addition, the first valve assembly 10 may also have a throttling function to control the backflow flushing speed to achieve a better flushing effect. Specifically, the first valve assembly may also include a throttling valve and an electromagnetic switch valve connected in series. The backflow flushing speed is controlled by the throttling valve, and the first pipeline 400 is opened and closed by the electromagnetic switch valve, thereby controlling the flushing and filtering mechanism or preparing flushing and filtering water.

[0113] In this embodiment, the first pipeline 400 can be a separate pipeline, or can be shared with multiple pipelines, or can be formed by combining partial pipelines of multiple pipelines, and this application does not limit it. Correspondingly, other pipelines in this application can also be separate pipelines, or can be shared with multiple pipelines, or can be formed by combining partial pipelines of multiple pipelines, and this application does not limit it.

[0114] In order to save costs and not affect the use effect, as a preferred solution, the wastewater discharge pipe 200 and the first pipe 400 share part of the pipe. Figure 4-Figure 9 In the embodiment shown, a wastewater proportioner 8 (also referred to as a wastewater ratio) may be provided on the common part of the pipeline. That is, the wastewater proportioner 8 is provided on the common part of the wastewater discharge pipeline 200. The wastewater discharge ratio of the filter mechanism 5 during the water production process is controlled by the wastewater proportioner 8, thereby ensuring the water efficiency of the water purifier and producing filtered water normally. The first valve assembly 10 is provided downstream of the common part of the first pipeline 400, that is, the first valve assembly 10 is located in the non-common part of the first pipeline 400.

[0115] In addition, if Figure 1-Figure 3 As shown, a wastewater proportioner 8 is provided on the non-common part of the wastewater discharge pipe. At this time, in order to control the flushing speed, the first valve assembly 10 can have a throttling effect. According to the above description, the first valve assembly can include a throttling valve and an electromagnetic switch valve 15 connected in series. The wastewater proportioner can be connected in parallel with the electromagnetic switch valve 15 to form a combined electromagnetic valve.

[0116] In this embodiment, the electromagnetic switch valve 15 connected in parallel to the wastewater proportioner 8 can effectively prevent the flushing wastewater recovered by the recovery mechanism from having too high TDS due to repeated use. In one embodiment, the water purifier can discharge the recovered and stored water from the water purifier. Among them, the water purifier can discharge the flushing wastewater stored by the recovery mechanism from the water purifier after a predetermined time, for example, discharge the flushing wastewater once every 10 days. Alternatively, the flushing wastewater stored by the recovery mechanism is discharged from the water purifier when the TDS of the flushing wastewater reaches a predetermined value. Specifically, when discharging the recovered flushing water, the electromagnetic switch valve 15 is opened, and the first valve assembly 10 is closed to discharge the recovered and stored water from the water purifier.

[0117] It can be seen that in this embodiment, after the water purifier flushes the filter mechanism 5 a certain number of times or a preset time, the flushing waste water will be discharged once to avoid excessively high concentration of waste water affecting the life of the membrane or reducing the TDS effect.

[0118] like Figure 1-Figure 9 As shown. A wastewater discharge switch 9 can also be connected in series to the wastewater discharge pipe 200. When preparing flushing filtered water, recycling flushing wastewater, and flushing the filter mechanism 5, the wastewater discharge pipe 200 is closed. When the water purifier is producing water normally (user water), the wastewater discharge switch 9 of the wastewater discharge pipe 200 is opened to discharge the wastewater from the water purifier.

[0119] In a specific embodiment, the recovery mechanism includes a second storage space 13 for storing flushing wastewater. To prevent flushing wastewater and flushing filtered water from flowing into each other and affecting the quality of flushing filtered water, the first storage space 12 and the second storage space 13 are not connected to each other.

[0120] Further, to ensure that the water in the first accommodating space 12 smoothly enters the filtering mechanism 5, the volume of the second accommodating space 13 is negatively correlated with the volume of the first accommodating space 12. Specifically, the water purifier has a water bag assembly 14. The water bag assembly 14 has an accommodating space and a water bag located in the accommodating space. The water bag assembly 14 separates the first accommodating space 12 and the second accommodating space 13 through the water bag.

[0121] The interior of the water bag forms the first accommodation space 12, and the exterior of the water bag forms the second accommodation space 13. In this way, the flushing mechanism and the recovery mechanism can be integrated to improve the system integration. The total volume of the second accommodation space 13 and the first accommodation space 12 can be kept constant.

[0122] When the second storage space 13 is used to assist in the discharge of filtered water, the volume of the first storage space 12 is reduced by increasing the volume of the second storage space 13, thereby discharging the filtered water in the first storage space 12. Accordingly, when filtered water is input into the first storage space 12, the volume of the first storage space 12 gradually increases, and at this time, the volume of the second storage space 13 is correspondingly reduced. The volume of the second storage space 13 can be increased or decreased by inputting and outputting flushing waste water.

[0123] In the embodiment of the present application, the water purifier further has a booster pump 4. The water outlet of the booster pump 4 is connected to the raw water inlet. The first pipe 400 is connected to the water inlet of the booster pump 4, and further connected to the raw water inlet. The booster pump 4 can pressurize water when flushing the filter mechanism 5 and preparing filtered water (including: filtered water for normal use and flushing filtered water), thereby improving the efficiency of flushing the filter mechanism 5.

[0124] Of course, other mechanisms may be connected in series upstream of the water pump, such as a pre-filter mechanism 2 (such as the above-mentioned pre-treatment filter element and anti-scaling filter element), which is not particularly limited in this embodiment. In one embodiment, an anti-scaling filter element (a type of pre-filter mechanism 2) and an inlet valve 1 are connected in series upstream of the water pump. The anti-scaling filter element is used to prevent scaling of various downstream components (such as the filter mechanism 5 and the pipeline). The inlet valve 1 is used to control the input of raw water.

[0125] See also Figure 1-Figure 3 . The second accommodating space 13 is connected to the water inlet of the booster pump 4 through the second pipe 500. In addition, the second accommodating space 13 is connected to the first pipe 400 through the second pipe 500 to be connected to the wastewater outlet. The water inlet of the booster pump 4 is connected to a raw water input pipe 100. The first pipe 400 and the second pipe 500 are connected to the raw water input pipe 100 through a first connection point 22. The raw water input pipe 100 is provided with a second valve assembly 3 downstream of the first connection point 22. The second valve assembly 3 may be a switch valve. The raw water input pipe 100 may be connected in series with a scale inhibitor filter upstream of the first connection point 22.

[0126] By controlling the first valve assembly 10 and the second valve assembly 3, the first accommodating space 12 can supply water to the raw water inlet of the filtering mechanism 5 and input water from the filtered water outlet at different times, thereby realizing water replenishment or water outlet of the first accommodating space 12. For the convenience of automatic control, the valve assemblies in the above embodiments are preferably solenoid valves.

[0127] Specifically, the filtered water output pipeline 300 is connected to the raw water input pipeline 100 through the third pipeline 600. The second connection point 23 between the third pipeline 600 and the raw water input pipeline 100 is located between the second valve assembly 3 and the booster pump 4. To prevent flushing waste water from entering the third pipeline and to prevent liquid backflow, the filtered water output pipeline 300 is connected in series with a first one-way valve 6 between the second connection point 23 and the filtered water port.

[0128] The third connection point 24 between the third pipe 600 and the filtered water output pipe 300 is located between the filtered water outlet and the first accommodating space 12. The third pipe 600 is provided with a third valve assembly 11.

[0129] Specifically, the third valve assembly 11 may be a solenoid switch valve and a one-way valve connected in series, and the one-way valve may prevent the backflow of the flushing filtered water on the third pipe 600. The filtered water outlet and the first accommodating space 12 may be connected to the raw water inlet via the third pipe 600, so as to input the filtered water for flushing into the raw water inlet.

[0130] The third valve assembly may also be provided with a high-pressure switch. The high-pressure switch may control the electromagnetic switch valve of the third valve assembly 11 to open when the pressure of the third pipeline 600 is greater than a predetermined pressure. The high-pressure switch is connected to the first accommodating space 12 through a pipeline. When preparing flushing and filtered water, when the pressure of the first accommodating space 12 is greater than a predetermined pressure, it indicates that the flushing and filtered water in the first accommodating space 12 is full or has reached a target value, and the high-pressure switch may control the electromagnetic switch valve of the third valve assembly 11 to open (conduct). The water purifier then closes the second valve assembly 3 and the water inlet valve 1 to realize the flushing and filtering mechanism.

[0131] Combine the following Figures 1 to 3 The working principle of the water purifier of the implementation mode of the present application is described in detail to facilitate a better understanding of the present application.

[0132] like Figure 1As shown. During normal water production, the user opens the water valve 7, the water purifier opens the water inlet valve 1, and closes the first valve assembly 10 on the first pipeline 400, opens the switch valve on the wastewater discharge pipeline 200, and closes the electromagnetic switch valve 15 of the combined electromagnetic valve (at this time, the wastewater proportioner performs a throttling function). In addition, the second valve assembly 3 is opened and the booster pump 4 is started. The third valve assembly 11 on the third pipeline 600 is closed.

[0133] At this time, the raw water enters the raw water inlet of the filter mechanism 5 through the raw water input pipe 100 and the booster pump 4, the filtered water formed by the filter mechanism 5 is discharged from the filtered water outlet, and the filtered water reaches the water use end through the filtered water output pipe 300. When the second accommodation space 13 is a cavity (for example, the water purifier is initially operated and the flushing waste water has been completely discharged), the raw water enters the second pipe 500 at the first connection point 22, and then enters the second accommodation space 13, and the second accommodation space 13 is replenished with raw water.

[0134] like Figure 2 As shown, when the user closes the water valve 7, the water purifier enters the first step of the flushing procedure: preparing flushing filtered water. This step can be started and executed after the water purifier is shut down (the water valve 7 is closed) for a predetermined time to ensure low TDS when it is turned on. Of course, in some embodiments, it can also be run immediately when the water purifier is shut down.

[0135] In this step, the water purifier can input the water in the storage mechanism (the second accommodation space) into the filter mechanism to prepare flushing filtered water. Since the water valve 7 on the filtered water output pipe 300 is closed, the water purifier does not discharge filtered water when flushing the filter mechanism 5. The switch valve on the wastewater discharge pipe 200 is closed, so that the water purifier does not discharge wastewater when flushing the filter mechanism 5.

[0136] Open the first valve assembly 10 on the first pipeline 400, and the electromagnetic switch valve of the combined electromagnetic valve (at this time, the wastewater proportioner is short-circuited by the electromagnetic switch valve). Thus, the wastewater discharged by the filter mechanism 5 is re-input into the filter mechanism 5 to prepare flushing filtered water. Close the third valve assembly 11 on the third pipeline 600 to prevent the prepared flushing filtered water from entering the first accommodation space 12. In this step, the water inlet valve 1 on the raw water input pipeline 100 can also remain open, and the second valve assembly 3 is opened.

[0137] The booster pump 4 is started, and the water in the second accommodation space 13 (which may be the raw water in the previous step or the flushing waste water in the next step) enters the filter mechanism 5 through the second pipe 500, the first connection point 22, and the booster pump 4, and the filter mechanism 5 forms filtered water and waste water. The waste water re-enters the filter mechanism 5 through the first pipe 400, the first connection point 22, and the booster pump 4. The filtered water produced by the filter mechanism 5 enters the first accommodation space 12 through (part of) the filtered water output pipe 300 to form flushing filtered water.

[0138] like Figure 3 The water purifier enters the second step of the flushing procedure: the water purifier can use the flushing filtered water to flush the filter mechanism, and at the same time, the water purifier uses the storage mechanism (refer to the second accommodating space) to recycle and store the water discharged from the wastewater outlet when flushing the filter mechanism.

[0139] When the filter mechanism 5 needs to be flushed, the third valve assembly 11 of the third pipe 600 is opened, and the first accommodating space 12 is connected to the raw water inlet of the filter mechanism 5 through the third pipe 600. The water inlet valve 1 and the second valve assembly 3 of the raw water input pipe 100 are closed. The switch valve on the wastewater discharge pipe 200 is closed, so that when flushing the filter mechanism 5, the water purifier does not discharge wastewater. The water valve 7 on the filtered water output pipe 300 is closed, so that when flushing the filter mechanism 5, the water purifier does not discharge filtered water.

[0140] Turn on the boost pump 4, and the boost pump 4 inputs the flushing filtered water in the first storage space 12 into the filter mechanism 5 through the raw water inlet. The flushing filtered water drives the concentrated water on the wastewater side to be discharged from the wastewater outlet. At the same time, because there is a certain water pressure when the boost pump 4 is driven, a certain amount of filtered water will be formed at the filtered water outlet of the filter mechanism 5 when the flushing filtered water flushes the filter mechanism 5. This part of the filtered water re-enters the filter mechanism 5 through the (partial length) filtered water output pipe 300, the third pipe 600, and the boost pump 4 to flush the filter mechanism 5. At this time, the water purifier inputs the flushing filtered water and the filtered water discharged from the filtered water outlet of the filter mechanism 5 into the raw water inlet to flush the filter mechanism 5. When flushing the filter mechanism 5, the flushing wastewater discharged from the wastewater outlet of the filter mechanism 5 enters the second storage space 13 through the first pipe 400 and the second pipe 500, and the flushing wastewater is recovered and stored. Then execute as follows Figure 2 Steps shown.

[0141] In order to prevent the TDS of the flushing wastewater from being too high and causing the TDS of the flushing filtered water to be too high, after the water purifier uses the flushing filtered water to flush the filter mechanism 5; and the flushing filtered water is prepared by using the flushing wastewater recovered and stored by the storage mechanism (refer to the second storage space) and the cycle is performed for a predetermined time or a predetermined number of times, the recovered and stored water is discharged from the water purifier.

[0142] See also Figure 7-Figure 9 The embodiment shown. The recovery mechanism includes a second storage space 13 for storing flushing wastewater; the first storage space 12 and the second storage space 13 are not connected to each other. The description of the first storage space 12 and the second storage space 13 can refer to the description in the above-mentioned implementation mode and embodiment, and will not be repeated in this embodiment.

[0143] In this embodiment, the water purifier has a water bag assembly 14. The water bag assembly 14 has a storage space and a water bag located in the storage space. The water bag assembly 14 separates the first storage space 12 and the second storage space 13 through the water bag. The interior of the water bag forms the first storage space 12. The exterior of the water bag forms the second storage space 13. In this way, the flushing mechanism and the recovery mechanism can be integrated to improve the system integration. The total volume of the second storage space 13 and the first storage space 12 can be kept constant.

[0144] In this embodiment, the water purifier has a booster pump 4 (also referred to as a water pump). The water outlet of the booster pump 4 is connected to the raw water inlet. The first pipeline 400 is connected to the water inlet of the booster pump 4, and further connected to the raw water inlet. The water inlet of the booster pump 4 is connected to the raw water input pipeline 100. The first pipeline 400 can be connected to the raw water input pipeline 100 (the connection point can be the first connection point 22) to achieve communication with the water inlet of the booster pump 4.

[0145] The second accommodating space 13 is connected in series to the first pipe 400. The first valve assembly 10 is located downstream of the second accommodating space 13. The first valve assembly 10 may include a solenoid switch valve and a one-way valve connected in series. The wastewater discharge pipe 200 of the non-common part is connected between the first valve assembly 10 and the second accommodating space 13. In addition, a wastewater proportioner 8 is provided on the common part of the wastewater discharge pipe 200 and the first pipe 400 (of course, in another embodiment, the wastewater proportioner 8 can also be set as the above-mentioned combined solenoid valve), and a wastewater discharge switch 9 is provided on the wastewater discharge pipe 200 of the non-common part (the wastewater discharge switch 9 controls whether the water purifier discharges water to the outside).

[0146] The water bag assembly 14 has a first inlet and a first outlet communicating with the first accommodation space 12, and a second inlet and a second outlet communicating with the second accommodation space 13. The water bag assembly 14 is connected in series to the first pipe 400 through the second inlet and the second outlet, so that the second accommodation space 13 is connected in series to the first pipe 400.

[0147] The first accommodating space 12 is connected to the water inlet of the boosting pump 4 through the seventh pipeline 1000. The seventh pipeline 1000 is provided with a seventh valve assembly 20. The seventh valve assembly 20 can be a solenoid switch valve and a one-way valve connected in series. In order to reduce manufacturing costs, the seventh pipeline 1000 can share a part of the pipeline with the first pipeline 400. The seventh valve assembly 20 is located upstream of the shared part of the pipeline. The first accommodating space 12 is connected to the filtered water output pipeline 300 through an eighth pipeline 1100.

[0148] The first inlet of the first accommodating space 12 is communicated with the eighth pipe 1100, and the first outlet is communicated with the seventh pipe 1000. In order to prevent liquid backflow and avoid the filtered water output from the first accommodating space 12 from being directly input into the filtered water side of the filtering mechanism 5 through the eighth pipe 1100 without forming flushing, a second one-way valve 21 is provided on the eighth pipe 1100.

[0149] Combine the following Figures 7 to 9 The working principle of the water purifier of the implementation mode of the present application is described in detail to facilitate a better understanding of the present application.

[0150] like Figure 7 As shown, the user turns on the faucet switch, the water purifier produces water normally, the first valve assembly 10 on the first pipeline 400 is closed, and the switch valve on the wastewater discharge pipeline 200 is opened. In addition, the booster pump 4 is started. The seventh valve assembly 20 on the seventh pipeline 1000 is closed. The water inlet valve 1 of the raw water input pipeline 100 is opened.

[0151] At this time, the raw water enters the raw water inlet of the filter mechanism 5 through the raw water input pipe 100 and the booster pump 4, and the filtered water formed by the filter mechanism 5 is discharged from the filtered water outlet, and the filtered water reaches the water use end through the filtered water output pipe 300. After the waste water fills the second accommodation space 13 through the waste water discharge pipe 200, it is discharged from the water purifier through the waste water discharge pipe 200 of the non-common part.

[0152] like Figure 8As shown, when the user turns off the faucet switch, the first step of the flushing procedure is to prepare flushing filtered water and close the water inlet valve 1 of the raw water input pipe 100. Close the switch valve on the (non-common part) wastewater discharge pipe 200, so that when flushing the filter mechanism 5, the water purifier does not discharge wastewater. Close the seventh valve assembly 20 on the seventh pipe 1000 to prevent the prepared flushing filtered water from entering the first accommodation space 12. In this step, the water inlet valve 1 on the raw water input pipe 100 can remain closed. Open the first valve assembly 10 on the first pipe 400, so that the wastewater in the second accommodation space 13 is input into the filter mechanism 5 through the first pipe 400 to prepare flushing filtered water, and then input into the first accommodation space 12 through the eighth pipe 1100. The wastewater output from the wastewater outlet of the filter mechanism 5 is re-input into the second accommodation space 13 through the common part of the wastewater discharge pipe 200 (also part of the first pipe 400).

[0153] The booster pump 4 is started, and the water in the second accommodation space 13 (which may be the wastewater in the previous step or the flushing wastewater in the next step) enters the filter mechanism 5 through the first pipe 400, the first connection point 22, and the booster pump 4, and the filter mechanism 5 forms filtered water and wastewater. The wastewater re-enters the second accommodation space 13 through the common wastewater discharge pipe 200 (that is, the common first pipe 400). The filtered water produced by the filter mechanism 5 enters the first accommodation space 12 through the eighth pipe 1100.

[0154] like Fig. 9 As shown, when the filter mechanism 5 needs to be flushed, the seventh valve assembly 20 of the seventh pipe 1000 is opened, and the first accommodating space 12 is connected to the raw water inlet of the filter mechanism 5 through the seventh pipe 1000. The water inlet valve 1 of the raw water input pipe 100 is closed. The switch valve on the wastewater discharge pipe 200 is closed, so that when the filter mechanism 5 is flushed, the water purifier does not discharge wastewater. The water valve 7 on the filtered water output pipe 300 is closed, so that when the filter mechanism 5 is flushed, the water purifier does not discharge filtered water. The first valve assembly 10 on the first pipe 400 is closed.

[0155] The booster pump 4 is turned on, and the booster pump 4 inputs the flushing filtered water in the first accommodating space 12 into the filter mechanism 5 through the raw water inlet. The flushing filtered water drives the concentrated water on the wastewater side to be discharged from the wastewater outlet. At the same time, because there is a certain water pressure when the booster pump 4 is driven, a certain amount of filtered water will be formed at the filtered water outlet of the filter mechanism 5 when the flushing filtered water flushes the filter mechanism 5. This part of the filtered water re-enters the filter mechanism 5 through the (partial length) filtered water output pipe 300, the eighth pipe 1100 and the seventh pipe 1000, and the booster pump 4 to flush the filter mechanism 5.

[0156] At this time, the water purifier inputs the flushing filtered water and the filtered water discharged from the filtered water outlet of the filter mechanism 5 into the raw water inlet to flush the filter mechanism 5. When flushing the filter mechanism 5, the flushing wastewater discharged from the wastewater outlet of the filter mechanism 5 enters the second accommodation space 13 through the common wastewater discharge pipe 200 (that is, the common first pipe 400), and the flushing wastewater is recovered and stored.

[0157] In such Figure 4-Figure 6 In the embodiment shown, the water purifier may also include a booster pump 4. The water inlet of the booster pump 4 is connected to a first filter assembly 19 having the first accommodation space 12. The first filter assembly 19 may be a filter bottle structure. The first accommodation space 12 may also recycle and store the water discharged from the wastewater outlet when flushing the filter mechanism 5 after the filtered water is discharged, so as to form the recovery mechanism.

[0158] In this embodiment, the first accommodating space 12 and the second accommodating space 13 use the same space at different times, that is, the inner space of the first filter assembly 19. When the first filter assembly 19 inputs one of the flushing waste water and the flushing filtered water through its input end, the other is output from the output end of the first filter assembly 19, specifically, it is pushed and driven by the booster pump 4.

[0159] In this embodiment, the first filter component 19 can be a composite filter element (such as nanofiltration membrane, microfiltration membrane, activated carbon, PP cotton, etc.), or a single filter element (such as nanofiltration membrane, microfiltration membrane, activated carbon, PP cotton, etc.). Figure 4 As shown, the first filter component 19 can be a pre-treatment filter element).

[0160] In this embodiment, the water inlet of the booster pump 4 is connected to the raw water input pipeline 100. The first filter assembly 19 is connected in series to the raw water input pipeline 100. The fourth connection point 25 between the first pipeline 400 and the raw water input pipeline 100 is located between the first filter assembly 19 and the booster pump 4.

[0161] The water inlet end of the first filter assembly 19 is connected to the wastewater outlet through a fourth pipe 700. A fourth valve assembly 16 is provided on the fourth pipe 700. The fourth pipe 700 shares a portion of the pipe with the first pipe 400. The fourth valve assembly 16 is located downstream of the shared portion of the pipe. The first valve assembly 10 is located downstream of the shared portion of the pipe.

[0162] The water inlet end of the first filter assembly 19 is also connected to the filtered water outlet through the fifth pipe 800. The fifth pipe 800 is provided with a fifth valve assembly 17. The filtered water outlet is also connected to the water inlet of the booster pump 4 through a sixth pipe 900. The sixth pipe 900 is provided with a sixth valve assembly 18. The sixth pipe 900 shares a part of the pipe with the fifth pipe 800; the fifth valve assembly 17 is located downstream of the shared part of the pipe; and the sixth valve assembly 18 is located downstream of the shared part of the pipe.

[0163] Combine the following Figures 4 to 6 The working principle of the water purifier of the implementation mode of the present application is described in detail to facilitate a better understanding of the present application.

[0164] like Figure 4 As shown. During normal water production, the user opens the water valve 7 (also considered as a tap switch) on the filtered water output pipe 300. The water purifier (controller) closes the first valve assembly 10 on the first pipe 400, opens the switch valve on the wastewater discharge pipe 200, and starts the booster pump 4. The water purifier (controller) closes the fourth valve assembly 16 on the fourth pipe 700, closes the fifth valve assembly 17 on the fifth pipe 800, closes the sixth valve assembly 18 on the sixth pipe 900, and opens the water inlet valve 1 (also called the water inlet solenoid valve) of the raw water input pipe 100.

[0165] At this time, the raw water enters the raw water inlet of the filter mechanism 5 through the raw water input pipe 100, the first filter assembly 19, and the booster pump 4, and the filtered water formed by the filter mechanism 5 is discharged from the filtered water outlet, and the filtered water reaches the water use end through the filtered water output pipe 300. The waste water is discharged from the water purifier through the waste water discharge pipe 200. The first filter assembly 19 is filled with raw water.

[0166] like Figure 5 As shown. When it is necessary to prepare flushing filtered water, the user closes the water valve 7 on the filtered water output pipe 300, and the water purifier enters the first step of the flushing procedure: preparing flushing filtered water. Close the water inlet valve 1 of the raw water input pipe 100. Close the switch valve on the wastewater discharge pipe 200, so that when flushing the filtering mechanism 5, the water purifier does not discharge wastewater. Open the fifth valve assembly 17 on the fifth pipe 800, and close the sixth valve assembly 18 of the sixth pipe 900, so as to prevent the prepared flushing filtered water from entering the first accommodating space 12.

[0167] In this step, the water inlet valve 1 on the raw water input pipe 100 can be kept closed. The fourth valve assembly 16 on the fourth pipe 700 is closed to prevent the wastewater discharged from the wastewater outlet from entering the first filter assembly 19. The first valve assembly 10 on the first pipe 400 is opened, so that the wastewater in the filter mechanism 5 is input into the booster pump 4 through the first pipe 400 and re-input into the first filter assembly 19.

[0168] Start the booster pump 4, the water in the first filter assembly 19 (which can be the raw water in the previous step) enters the filter mechanism 5 through the booster pump 4, and the filter mechanism 5 forms filtered water and waste water. The waste water re-enters the first filter assembly 14 through the first pipe 400 (the shared waste water discharge pipe 200). The filtered water produced by the filter mechanism 5 enters the first filter assembly 19 through the fifth pipe 800 to form flushing filtered water, and the raw water in the first filter assembly 19 is pushed out and sucked by the booster pump 4, and enters the filter mechanism 5 for filtration.

[0169] like Figure 6 The water purifier enters the second step of the flushing procedure: the water purifier can use the flushing filtered water to flush the filter mechanism, and at the same time, the water purifier uses the storage mechanism (refer to the second accommodating space) to recycle and store the water discharged from the wastewater outlet when flushing the filter mechanism.

[0170] When the filter mechanism 5 needs to be flushed, the water valve 7 is kept closed. The water purifier opens the fourth valve assembly 16 of the fourth pipeline 700, closes the first valve assembly 10 on the first pipeline 400, and the first filter assembly 19 is connected to the raw water inlet of the filter mechanism 5 through the fourth pipeline 700. Close the water inlet valve 1 of the raw water input pipeline 100. Close the switch valve on the wastewater discharge pipeline 200, so that when flushing the filter mechanism 5, the water purifier does not discharge wastewater. Close the fifth valve assembly 17 on the fifth pipeline 800, and open the sixth valve assembly 18 on the sixth pipeline 900.

[0171] The booster pump continues to operate, and the booster pump 4 inputs the flushing filtered water in the first filter assembly 19 into the filter mechanism 5 through the raw water inlet. The flushing filtered water drives the concentrated water on the wastewater side to be discharged from the wastewater outlet. At the same time, because there is a certain water pressure when the booster pump 4 is driven, when the flushing filtered water flushes the filter mechanism 5, a certain amount of filtered water will be formed at the filtered water outlet of the filter mechanism 5. This part of the filtered water re-enters the filter mechanism 5 through the (partial length) filtered water output pipe 300, the sixth pipe 900, and the booster pump 4 to flush the filter mechanism 5. At this time, the water purifier inputs the flushing filtered water and the filtered water discharged from the filtered water outlet of the filter mechanism 5 into the raw water inlet to flush the filter mechanism 5. When flushing the filter mechanism 5, the flushing wastewater discharged from the wastewater outlet of the filter mechanism 5 enters the first filter assembly 19 through the first pipe 400, and the flushing wastewater is recovered and stored.

[0172] In this implementation, Figure 5 , Figure 6 The steps shown can be controlled by time. Figure 5 In the embodiment, flushing filtered water of the first predetermined time can be produced. The first predetermined time can be determined according to the capacity of the first filter assembly 19 and the water production speed, or the booster pump power and other parameters, and the specific value is not limited in this embodiment. Figure 6 In the embodiment, the second predetermined time of flushing filtered water (i.e., the waste water discharged by the filtering mechanism 5 for the second predetermined time) can be flushed. The second predetermined time can be determined according to the capacity of the first filtering component 19 and the flushing speed, or the booster pump power and other parameters, and the specific value is not limited in this embodiment.

[0173] In one embodiment of the present application, the water purifier has a storage mechanism. The control method may further include: inputting the water in the storage mechanism into the filter mechanism 5 to prepare flushing filtered water. Accordingly, the control method may include: flushing the filter mechanism 5 with the flushing filtered water; and recycling and storing the water discharged from the wastewater outlet when flushing the filter mechanism 5 with the storage mechanism.

[0174] The storage mechanism can refer to the second storage space 13, which will not be described in detail in this embodiment. The water in the storage space can be flushing wastewater or raw water. For example, the storage mechanism can store raw water in an initial empty state (for example, when the machine is turned on for the first time or after the flushing wastewater is discharged from the water purifier), and then the storage mechanism can be filled with flushing wastewater after the water purifier executes the control method.

[0175] Any numerical value cited herein includes all values ​​of lower and upper values ​​that increase by one unit from the lower limit to the upper limit, and there is at least a two-unit interval between any lower value and any higher value. For example, if the value of the quantity of a component or a process variable (such as temperature, pressure, time, etc.) is stated to be from 1 to 90, preferably from 20 to 80, and more preferably from 30 to 70, the purpose is to illustrate that values ​​such as 15 to 85, 22 to 68, 43 to 51, 30 to 32 are also explicitly listed in this specification. For values ​​less than 1, one unit is appropriately considered to be 0.0001, 0.001, 0.01, 0.1. These are merely examples that are intended to be clearly expressed, and it can be considered that all possible combinations of numerical values ​​listed between the lowest value and the highest value are clearly stated in this specification in a similar manner.

[0176] Unless otherwise indicated, all ranges include the endpoints and all numbers between the endpoints. "About" or "approximately" used with a range applies to both endpoints of the range. Thus, "about 20 to 30" is intended to cover "about 20 to about 30", including at least the specified endpoints.

[0177] All articles and references disclosed, including patent applications and publications, are incorporated herein by reference for all purposes. The term "consisting essentially of..." to describe a combination should include the identified elements, ingredients, parts or steps and other elements, ingredients, parts or steps that do not substantially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe a combination of elements, ingredients, parts or steps herein also contemplates embodiments that consist essentially of these elements, ingredients, parts or steps. By using the term "may", it is intended to indicate that any attribute described that "may" include is optional.

[0178] Multiple elements, ingredients, parts or steps can be provided by a single integrated element, ingredient, part or step. Alternatively, a single integrated element, ingredient, part or step can be divided into separate multiple elements, ingredients, parts or steps. The disclosure "one" or "an" used to describe an element, ingredient, part or step is not intended to exclude other elements, ingredients, parts or steps.

[0179] It should be understood that the above description is for illustration and not for limitation. Many embodiments and many applications beyond the examples provided will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of the present teachings should not be determined with reference to the above description, but should be determined with reference to the appended claims and the full scope of equivalents possessed by such claims. For the purpose of comprehensiveness, all articles and references, including disclosures of patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended to be a waiver of the subject matter, nor should it be considered that the inventors did not consider the subject matter to be part of the disclosed inventive subject matter.

Claims

1. A water purifier, It is characterized in that include: Filter mechanism; The filtering mechanism has a raw water inlet, a filtered water outlet, and a waste water outlet; A flushing mechanism that can be connected to the raw water inlet; the flushing mechanism can flush the filtering mechanism, and the flushing mechanism includes a first accommodation space for storing filtered water; the filtered water outlet is connected to a filtered water output pipeline that is connected to the water end; the first accommodation space is connected to the filtered water output pipeline; A recovery mechanism that can be connected to the wastewater outlet; the recovery mechanism can recover and store water discharged from the wastewater outlet when flushing the filtering mechanism, and the recovery mechanism can also be connected to the raw water inlet; A booster pump, wherein the water inlet of the booster pump is connected to the raw water input pipeline; the first accommodation space can also recover and store the water discharged from the wastewater outlet when flushing the filtering mechanism after the filtered water is discharged, so as to form the recovery mechanism; A first filter assembly having the first accommodating space, the first filter assembly being connected in series to the raw water input pipeline; the water inlet end of the first filter assembly is also connected to the filtered water outlet through a fifth pipeline; When the booster pump is started, the filtered water produced by the filtering mechanism can enter the first filtering component through the fifth pipeline to form flushing filtered water, and the raw water in the first filtering component is pushed out to enter the filtering mechanism for filtration.

2. The water purifier according to claim 1, Features: The wastewater outlet is connected to a wastewater discharge pipe; a wastewater discharge pipe is provided with a wastewater discharge switch; when the flushing mechanism flushes the filtering mechanism, the wastewater discharge switch is closed.

3. The water purifier according to claim 2, Features: The recovery mechanism does not simultaneously recover water from the waste water outlet and supply water to the raw water inlet.

4. The water purifier according to claim 3, Features: The first accommodating space does not simultaneously supply water to the raw water inlet and input water from the filtered water outlet.

5. The water purifier according to claim 4, Features: The wastewater outlet is connected to the raw water inlet through a first pipe; a first valve assembly is provided on the first pipe; and the first pipe inputs the wastewater flowing out of the wastewater outlet into the raw water inlet when producing filtered water in the first containing space.

6. The water purifier according to claim 5, Features: The wastewater discharge pipe shares a part of the pipe with the first pipe; a wastewater proportioner is provided on the shared part of the pipe, or a wastewater proportioner is provided on the non-shared part of the wastewater discharge pipe.

7. The water purifier according to claim 5, Features: The wastewater proportioner is connected in parallel with an electromagnetic switch valve.

8. A water purifier as claimed in any one of claims 5 to 7, Features: The water inlet of the booster pump is connected to a first filter assembly having the first accommodating space.

9. The water purifier according to claim 8, Features: A fourth connection point between the first pipeline and the raw water input pipeline is located between the first filter assembly and the booster pump.

10. The water purifier according to claim 9, Features: The water inlet end of the first filter assembly is connected to the wastewater outlet through a fourth pipe; a third valve assembly is provided on the fourth pipe; the fourth pipe and the first pipe share a portion of the pipe; the third valve assembly is located downstream of the shared portion of the pipe; and the first valve assembly is located downstream of the shared portion of the pipe.

11. The water purifier according to claim 10, Features: The fifth pipeline is provided with a fifth valve assembly.

12. The water purifier according to claim 11, Features: The filtered water outlet is also connected to the water inlet of the booster pump through a sixth pipeline; a sixth valve assembly is provided on the sixth pipeline; the sixth pipeline and the fifth pipeline share a portion of the pipeline; the fifth valve assembly is located downstream of the shared portion of the pipeline; and the sixth valve assembly is located downstream of the shared portion of the pipeline.

13. A method for controlling a water purifier, It is characterized in that The water purifier is the water purifier according to claim 1, and the control method of the water purifier includes: Flushing the filter mechanism of the water purifier; The water discharged from the wastewater outlet when flushing the filter mechanism is recovered and stored.

14. The control method according to claim 13, Features: Also includes: When flushing the filtering mechanism, the water purifier does not discharge waste water.

15. The control method according to claim 13, It is characterized in that Also includes: Inputting the recovered and stored water into the filtering mechanism to prepare flushing and filtering water; Correspondingly, flushing the filter mechanism of the water purifier includes: flushing the filter mechanism using the flushing filtered water.

16. The control method according to claim 15, It is characterized in that The flushing and filtering water is prepared for a first predetermined time; and the filtering mechanism is flushed for a second predetermined time.

17. The control method according to claim 16, Features: When the recovered and stored water is input into the filtering mechanism to prepare flushing filtered water, the water purifier does not discharge waste water and does not discharge filtered water.

18. The control method according to claim 16, Features: The filtering mechanism for flushing the water purifier comprises: When flushing the filter mechanism, the filtered water discharged from the filtered water outlet flushes the filter mechanism together with the flushing filtered water.

19. The control method according to claim 13, It is characterized in that Also includes: The recovered and stored water is discharged from the water purifier.

20. The control method according to claim 13, It is characterized in that The water purifier has a storage mechanism; the control method further includes: Inputting the water in the storage mechanism into the filtering mechanism to prepare flushing and filtering water; Correspondingly, the filtering mechanism for flushing the water purifier includes and the water discharged from the wastewater outlet when the filtering mechanism is flushed includes: flushing the filtering mechanism using the flushing filtered water; The storage mechanism is utilized to recover and store the water discharged from the wastewater outlet when the filtering mechanism is flushed.

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