Table type water purifying and drinking machine

Abstract

The invention provides a table type water purifying and drinking machine which is provided with a water taking opening used for outputting purified water and comprises a water purifying assembly, a tap water opening used for receiving tap water, a first one-way valve and a detachable raw water tank, the water purifying assembly comprises a raw water inlet, a purified water outlet and a concentrated water outlet, and the purified water outlet is communicated with the water taking opening; a raw water inlet of the water purifying assembly is communicated to a tap water port, so that the table type water purifying and drinking machine has a first water supply mode of supplying tap water to the water purifying assembly; the raw water tank is provided with a water tank outlet and a water tank concentrated water inlet, the water tank outlet is communicated to a water inlet of the first one-way valve when the raw water tank is in an installation state, and a water outlet of the first one-way valve is communicated to a raw water inlet of the water purification assembly, so that the table-type water purifying and drinking machine further has a second water supply mode that the raw water tank supplies water to the water purification assembly; the water tank concentrated water inlet is connected to the concentrated water outlet of the water purification assembly through a first concentrated water pipeline when the raw water tank is in a mounting state. The table type water purifying and drinking machine has more choices for raw water sources.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water purifying machine, in particular to a table type water purifying machine. BACKGROUND

[0002] With the development of the times, the table type water purifying machine has been recognized and purchased by most people, and the table type water purifying machine can meet the higher requirements of users for water quality.

[0003] At present, the water purifying machines on the market can be divided into embedded type, under-kitchen type, table type and the like according to different use scenes, among which the table type water purifying machine is widely welcomed due to its simple installation and more functions. The table type water purifying machine usually adopts a water tank for water supply. For the table type water purifying machine using a reverse osmosis filter element or a nanofiltration filter element, the water tank not only stores raw water for water production, but also stores concentrated water generated during water production. The user needs to manually supplement fresh raw water into the water tank during water replacement.

[0004] In some use scenes where water supply facilities such as a tap are provided but no drainage facilities such as a sewer are provided, the current table type water purifying machine still needs the user to manually inject raw water into the water tank, which brings inconvenience to the user. SUMMARY

[0005] To at least partially solve the problems in the prior art, some embodiments of the present application provide a table-top water purifier. The table-top water purifier has a water outlet for outputting purified water, comprising: a purified water assembly, the purified water assembly comprising a raw water inlet, a purified water outlet and a concentrated water outlet, the purified water outlet being communicated to the water outlet; a tap water inlet for receiving tap water, the raw water inlet of the purified water assembly being communicated to the tap water inlet, so that the table-top water purifier has a first water supply mode of supplying the purified water assembly with tap water; a first one-way valve; and a raw water tank, the raw water tank being detachable, the raw water tank having a tank outlet and a tank concentrated water inlet, wherein: the tank outlet is communicated to a water inlet of the first one-way valve when the raw water tank is in an installed state, and a water outlet of the first one-way valve is communicated to the raw water inlet of the purified water assembly, so that the table-top water purifier also has a second water supply mode of supplying the purified water assembly with raw water from the raw water tank; and the tank concentrated water inlet is connected to the concentrated water outlet of the purified water assembly through a first concentrated water pipeline when the raw water tank is in the installed state. In the above technical solution, the table-top water purifier can directly provide tap water for the purified water assembly through the tap water inlet under the condition of having a water supply facility, i.e. the first water supply mode, without the user manually supplementing the raw water tank; and the purified water assembly can be supplied with raw water through the raw water tank under the condition of being unable to connect to tap water, i.e. the second water supply mode. Therefore, the table-top water purifier can be used in more scenarios, and the user can have more choices for the source of raw water, i.e. even under the condition of having a water supply facility, the user can choose to supply water from the raw water tank. Whether there is a drainage facility in the scenario, the concentrated water can be discharged into the raw water tank, and when the table-top water purifier is connected to tap water, the idle raw water tank can contain concentrated water until it is full, so that the frequency of the user emptying the tank can be reduced. The raw water tank is detachable, so that the user can conveniently pour out the concentrated water and, in the second water supply mode, the user can conveniently fill the raw water tank with raw water.

[0006] Exemplarily, the table-top water purifier further comprises: a position sensor for detecting whether the raw water tank is installed in place; and a controller, the controller being configured to enable the table-top water purifier to produce water when the raw water tank is installed in place. Since the purified water assembly needs to discharge concentrated water, in the scheme of returning the concentrated water to the raw water tank, the raw water tank needs to be installed in place whether the table-top water purifier is in the first water supply mode or in the second water supply mode, so that the concentrated water can be received and the concentrated water cannot flow out of the table-top water purifier.

[0007] Exemplarily, the desktop water purifying and drinking machine further comprises a drain port communicating with the outside, the concentrated water outlet of the water purifying assembly is connected to the drain port through the second concentrated water pipeline, and the valve assembly is configured to control the first concentrated water pipeline to be at least cut off in a predetermined direction when the second concentrated water pipeline is open, the predetermined direction being from the concentrated water inlet of the water tank to the concentrated water outlet of the water purifying assembly. In the above technical solution, the user can store or discard the concentrated water through the drain port, thereby increasing the diversity of user selection. The user can reuse the collected concentrated water to save water. When the original water tank is used for water supply, the concentrated water is directly discharged through the drain port, which can reduce the impurity concentration of the original water in the original water tank and prolong the service life of the filter element to a certain extent. After the desktop water purifying and drinking machine is used for the first time or the filter element is replaced, the concentrated water proportioning valve can be opened to flush the filter element, so as to clean the protective liquid. After the filter element is used for a period of time, the concentrated water proportioning valve can also be opened to flush the filter element, thereby removing the dirt on the surface of the filter element and prolonging the service life of the filter element. During the flushing process, the desktop water purifying and drinking machine provided with the drain port can quickly discharge the contaminated water after flushing from the drain port instead of returning to the original water tank, so that the water for flushing the filter element is always relatively clean, and the flushing efficiency of the filter element can be improved. The valve assembly is configured to allow only the concentrated water to flow out of the drain port, thereby avoiding leakage of the original water from the drain port.

[0008] Exemplarily, the second concentrated water pipeline can be cut off. By cutting off the second concentrated water pipeline, the desktop water purifying and drinking machine can be switched from discharging concentrated water through the drain port to returning concentrated water to the original water tank, which can be applied to various application scenarios, and the user can change it according to the use environment.

[0009] Exemplarily, the desktop water purifying and drinking machine further comprises a first blocking member for opening or closing the drain port, and the second concentrated water pipeline is cut off when the first blocking member closes the drain port. In this case, the valve assembly can be configured to be automatically opened under water pressure, so that the switching of the concentrated water discharge mode of the desktop water purifying and drinking machine can be realized at a low cost without control.

[0010] Exemplarily, the desktop water purifying and drinking machine further comprises a first concentrated water electromagnetic valve arranged on the second concentrated water pipeline, and the second concentrated water pipeline is cut off when the first concentrated water electromagnetic valve is closed. In this way, the user does not need to block the drain port by using a plug or a cover, and there is no problem of losing the first blocking member, nor is there a problem of affecting the appearance by tying the first blocking member to the desktop water purifying and drinking machine by a rope.

[0011] Exemplarily, the table-top water purifier further comprises a controller, which is configured to enable the table-top water purifier to produce water when the first water supply mode is in effect and the second concentrated water pipeline is determined to be open, even when the raw water tank is not installed in place. Since the concentrated water is discharged from the drain, there is no risk of concentrated water leaking from the opening of the first concentrated water pipeline that is not connected when the raw water tank is not installed in place. Of course, when the raw water tank is not installed in place, the water purification assembly of the table-top water purifier in the second water supply mode cannot obtain raw water from the raw water tank, and the water in the purified water tank and / or the cold tank cannot be replenished, but the product can still be provided to the user in general. When the second concentrated water pipeline is open and the tap is connected to the tap water source (i.e., in the first water supply mode), the table-top water purifier can be used without installing the raw water tank.

[0012] Exemplarily, the valve assembly comprises one or more of: a second one-way valve disposed on the first concentrated water pipeline, configured to be openable in the drain direction; a second concentrated water solenoid valve disposed on the first concentrated water pipeline; and a switching valve comprising a valve water inlet, a first valve water outlet, and a second valve water outlet, the valve water inlet being connected to the concentrated water outlet of the water purification assembly, the first valve water outlet being connected to the water inlet of the first concentrated water pipeline, and the second valve water outlet being connected to the water inlet of the second concentrated water pipeline. The second one-way valve can be automatically opened under water pressure without control, and can prevent raw water in the raw water tank from leaking from the drain when the second concentrated water pipeline is open. The second concentrated water solenoid valve can be closed when the second concentrated water pipeline is open, thereby preventing raw water from the raw water tank from leaking from the first concentrated water pipeline. The second concentrated water solenoid valve can also be opened when the second concentrated water pipeline is closed, so that concentrated water can enter the raw water tank through the first concentrated water pipeline. By controlling the switching valve, concentrated water can be controlled to flow back into the raw water tank or to be discharged to the drain, in which case the first blocking member or the first concentrated water solenoid valve is not required.

[0013] Exemplarily, the table-top water purifier further comprises: a water level detection assembly configured to detect water level information in the raw water tank; a prompt assembly; and a controller configured to control the prompt assembly to issue prompt information based on the water level information. The prompt assembly can timely remind the user to handle the water in the raw water tank, so as to ensure that the water source of the table-top water purifier is sufficient, or to avoid water from overflowing from the raw water tank.

[0014] Exemplarily, the prompt information comprises first prompt information and second prompt information, the first prompt information is used to prompt the user to empty the water tank, and the second prompt information is used to prompt the user to fill the water tank, and the controller is further configured to: in the first water supply mode, when the water level information indicates that the water level in the raw water tank is higher than or equal to the upper limit of the water level, control the prompt assembly to issue the first prompt information; and in the second water supply mode, when the water level information indicates that the water level in the raw water tank is lower than or equal to the lower limit of the water level, control the prompt assembly to issue the second prompt information. In this way, the user can be prompted clearly, and the user experience can be improved.

[0015] Exemplarily, the table-type water purifier further comprises an input assembly configured to receive a mode selection operation of the user selecting the water supply mode of the table-type water purifier and generate mode selection information, and the controller is configured to determine the current water supply mode of the table-type water purifier based on the mode selection information.

[0016] Exemplarily, the table-type water purifier comprises a pressure detector configured to be arranged on the tap water inlet or a pipeline directly communicating with the tap water inlet, and configured to detect the pressure of the tap water and generate pressure information, and the controller is further configured to: determine that the table-type water purifier is in the first water supply mode based on the pressure information when the pressure indicated by the pressure information is higher than or equal to a pressure threshold; and determine that the table-type water purifier is in the second water supply mode based on the pressure information when the pressure indicated by the pressure information is lower than the pressure threshold. In this way, the table-type water purifier can automatically determine the water source, and control the prompt assembly to issue prompt information based on the water level information according to different water supply modes.

[0017] Exemplarily, the table-type water purifier comprises an input assembly further configured to receive a water taking operation of the user and generate water taking information, and the table-type water purifier further comprises a water inlet control valve, wherein: a water inlet of the water inlet control valve is communicated to the tap water inlet, a water outlet of the water inlet control valve is communicated to the raw water inlet in parallel with a water outlet of the first check valve, and the controller is further configured to control the water inlet control valve to open and close based on the water taking information in the first water supply mode, and control the water inlet control valve to close in the second water supply mode. The water inlet control valve can be arranged to avoid the raw water continuously flowing into the raw water tank from the concentrated water outlet or overflowing in the case that the first concentrated water pipeline is conducted, or the raw water flowing out from the drain in the case that the second concentrated water pipeline is conducted. In this way, the service life of the filter element can also be avoided from being shortened due to continuous water making under water pressure.

[0018] Exemplarily, the table-type water purifier comprises an input assembly further configured to receive a water taking operation of the user and generate water taking information, and the table-type water purifier further comprises a water inlet control valve, wherein: a water inlet of the water inlet control valve is communicated to the tap water inlet and the water outlet of the first check valve, a water outlet of the water inlet control valve is communicated to the raw water inlet, and the controller is further configured to control the water inlet control valve to open and close based on the water taking information. The controller can control the water inlet control valve to open and close based on the water taking information.

[0019] Exemplarily, the controller is further configured to control the water inlet control valve to be closed when the water level information indicates that the water level in the raw water tank is higher than or equal to the upper limit of the water level. Thus, the overflow of the concentrated water can be prevented.

[0020] Exemplarily, the controller is further configured to, when it is determined that the table-top water purifying and drinking machine enters the first water supply mode, send third prompt information for prompting the user to empty the water tank when the water level information indicates that the water level in the raw water tank is higher than or equal to the upper limit of the water level. In this case, emptying the raw water tank can also provide space for the storage of the concentrated water.

[0021] Exemplarily, the controller is further configured to, when it is determined that the table-top water purifying and drinking machine enters the first water supply mode, send third prompt information for prompting the user to empty the water tank. Emptying the raw water tank can avoid the water in the raw water tank from being stored for a long time to breed bacteria.

[0022] Exemplarily, the table-top water purifying and drinking machine comprises a third one-way valve, a water inlet of the third one-way valve is communicated with the tap water inlet, and a water outlet of the third one-way valve is communicated with the water outlet of the first one-way valve and the raw water inlet of the water purifying assembly. By arranging the third one-way valve, even if the height of the tap water inlet is lower than the liquid level in the raw water tank, the raw water in the raw water tank will not flow out from the tap water inlet.

[0023] Exemplarily, the table-top water purifying and drinking machine further comprises a second blocking member for opening or closing the tap water inlet, and the second blocking member is configured to close the tap water inlet when the table-top water purifying and drinking machine only works in the second water supply mode. The second blocking member not only can prevent foreign matters such as dust from entering from the tap water inlet when the table-top water purifying and drinking machine does not use tap water, but also can make the table-top water purifying and drinking machine work reliably when the raw water tank is used for water supply.

[0024] Exemplarily, the height of the tap water inlet is not lower than the top of the raw water tank. In this way, even if the tap water inlet can not be closed, the raw water in the raw water tank will not flow out from the tap water inlet.

[0025] A series of simplified concepts are introduced in the summary, which will be further described in detail in the specific embodiments. The summary part does not mean to try to limit the key features and necessary technical features of the claimed technical solutions, nor to try to determine the protection scope of the claimed technical solutions.

[0026] The advantages and features of the present application will be described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0027] The following drawings of the present application are hereby incorporated into this application as part of the present application for the purpose of understanding the present application. The embodiments of the present application and the description thereof shown in the drawings are used to explain the principles of the present application. In the drawings,

[0028] Figure 1 Water circuit diagram of the table water purifier according to the first exemplary embodiment of the present application;

[0029] Figure 2 Water circuit diagram of the table water purifier according to the second exemplary embodiment of the present application;

[0030] Figure 3 Water circuit diagram of the table water purifier according to the third exemplary embodiment of the present application;

[0031] Figure 4 Water circuit diagram of the table water purifier according to the fourth exemplary embodiment of the present application.

[0032] In the above description, a large number of details are provided so as to enable a thorough understanding of the present application. However, it will be apparent to those skilled in the art that the description as follows only exemplarily shows the preferred embodiments of the present application, and the present application can be implemented without one or more of such details. In addition, in order to avoid confusion with the present application, some technical features well known in the art are not described in detail.

[0033] 10, water inlet; 20, water outlet; 30, purified water circuit; 31, purified water tank; 32, water pump; 40, cold tank; 50, ice making assembly; 60, heating assembly; 70, drain outlet; 80, tap water inlet; 90, first one-way valve; 100, raw water tank; 101, water tank outlet; 102, water tank concentrated water inlet; 103, lower water level limit; 104, upper water level limit; 200, purified water assembly; 201, raw water inlet; 202, purified water outlet; 203, concentrated water outlet; 210, filter core; 220, booster pump; 230, concentrated water proportional valve; 300, second concentrated water circuit; 310, first concentrated water electromagnetic valve; 400, first concentrated water circuit; 410, second one-way valve; 420, second concentrated water electromagnetic valve; 500, water inlet control valve; 600, water inlet circuit; 601, third one-way valve. DETAILED DESCRIPTION

[0034] In the following description, a large number of details are provided so as to enable a thorough understanding of the present application. However, it will be apparent to those skilled in the art that the description as follows only exemplarily shows the preferred embodiments of the present application, and the present application can be implemented without one or more of such details. In addition, in order to avoid confusion with the present application, some technical features well known in the art are not described in detail.

[0035] In order to thoroughly understand the embodiments of the present application, detailed structures will be proposed in the following description. It is obvious that the implementation of the embodiments of the present application is not limited to the special details familiar to those skilled in the art. The preferred embodiments of the present application are described as follows, however, in addition to these detailed descriptions, the present application can also have other embodiments.

[0036] The embodiments of the present application provide a table water purifier. The table water purifier according to the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0037] As Figure 1As shown, the table-top water purifier can have a water outlet 10 for outputting purified water, which can be formed by a water outlet nozzle 20 or a faucet or the like structure arranged on the table-top water purifier. The table-top water purifier can further include a water purifying assembly 200. The water purifying assembly 200 includes a raw water inlet 201 and a purified water outlet 202. With continued reference to Figure 1 The water purifying assembly 200 can include a filter cartridge 210, which can include, for example, an activated carbon filter cartridge, a PP filter cartridge, a ceramic filter cartridge, a resin filter cartridge, an ultrafiltration filter cartridge, a nanofiltration filter cartridge, a reverse osmosis filter cartridge, or the like, and a composite filter cartridge composed of one or more of the filter cartridges. For the nanofiltration filter cartridge and the reverse osmosis filter cartridge, appropriate pressure is required when they are working, and thus the water purifying assembly 200 can further include a booster pump 220. The nanofiltration filter cartridge and the reverse osmosis filter cartridge also generate a certain proportion of concentrated water when they are working, and thus the water purifying assembly 200 including one or both of the nanofiltration filter cartridge and the reverse osmosis filter cartridge is further provided with a concentrated water outlet 203. The concentrated water outlet 203 is connected to a concentrated water port of the filter cartridge 210 through a concentrated water proportioning valve 230. When the concentrated water proportioning valve 230 is in a closed state, the pressure required for normal working of the filter cartridge 210 can be maintained, and when the concentrated water proportioning valve 230 is in an open state, raw water can quickly pass through the filter cartridge 210 and the concentrated water proportioning valve 230, thereby washing the filter cartridge 210. The purified water outlet 202 can be connected to the water outlet 10, for example, through a purified water pipeline 30. The filter cartridge 210 can filter the raw water to remove harmful bacteria, heavy metals and other impurities therein, so as to provide high-quality purified water for users through the water outlet 10.

[0038] As described above, the filter cartridge 210 can include a reverse osmosis filter cartridge, the pore size of which is one millionth of a hair (0.1 nanometer), and the bacteria and viruses that cannot be seen by the naked eye are 10 times thereof. Therefore, only water molecules and part of beneficial mineral ions to the human body can pass through, and other impurities and heavy metals are discharged through the concentrated water outlet, thereby providing high-quality purified water for users. The daily water production of the reverse osmosis filter cartridge is positively correlated with its price, and thus the filter cartridge 210 can adopt a small-flux filter cartridge with a daily water production of not more than 400 gallons. On the premise of meeting the basic needs of users, the cost can be greatly reduced, and the size of the table-top water purifier can be reduced. For ease of description, the filter cartridge 210 is taken as an example of a small-flux reverse osmosis filter cartridge to be described in detail below.

[0039] The table-top water purifier can further comprise a tap water inlet 80 for receiving tap water. The tap water inlet 80 can be directly connected to a tap water pipe, or connected to a tap water faucet via a faucet adapter and a pipe, exemplarily but not limitatively. The raw water inlet 201 of the water purifying assembly 200 can be connected to the tap water inlet 80 via a water inlet pipe 600, so that the table-top water purifier has a first water supply mode in which tap water is supplied to the water purifying assembly 200. The table-top water purifier can further comprise a raw water tank 100 and a first one-way valve 90. The raw water tank 100 is detachable. The raw water tank 100 can comprise a filling port (not shown) through which a user can replenish raw water into the raw water tank 100, exemplarily but not limitatively. The raw water can comprise, but is not limited to, bottled water, well water or tap water. The raw water tank 100 has a tank outlet 101. The tank outlet 101 is connected to a water inlet of the first one-way valve 90 when the raw water tank 100 is in an installed state, and a water outlet of the first one-way valve 90 is connected to the raw water inlet 201 of the water purifying assembly 200, so that the table-top water purifier has a second water supply mode in which raw water in the raw water tank 100 is supplied to the water purifying assembly. The tank outlet 101 can be disposed at a bottom of the raw water tank 100, so that most of the raw water in the raw water tank 100 can flow out of the raw water tank 100 through the tank outlet 101. In an embodiment not shown, the tank outlet can be disposed at an upper portion of the raw water tank, and raw water in the raw water tank can be drawn out of the raw water tank via a pipe inserted into the raw water tank from the tank outlet. Thus, in a situation where it is inconvenient to connect the table-top water purifier to a tap water pipe, the table-top water purifier can provide purified water to a user by purifying raw water in the raw water tank 100, and the first one-way valve 90 can allow tap water to be directly supplied to the water purifying assembly 200 when the tap water inlet 80 of the table-top water purifier is connected to a tap water pipe.

[0040] The water inlet of the raw water tank 100 can be the same opening as the water outlet 101, thereby reducing the number of openings on the raw water tank 100 and making the structure simpler. Of course, the water inlet and the water outlet 101 can also be different openings. By way of example and not limitation, the water inlet and the water outlet 101 can both be located at the bottom of the raw water tank 100, which makes the upper part of the raw water tank 100 simpler and improves the user experience. The water inlet can have a large opening and a cover, so as to facilitate the user to fill the raw water and prevent the raw water from spilling. The detachable raw water tank 100 makes it easy for the user to carry it to the location of the water source, such as the location of the tap. For ease of carrying, the upper part of the raw water tank 100 can also be provided with a handle or other structure. If a handle is provided on the upper part, placing the water inlet at the lower part of the raw water tank 100 can avoid the handle from obstructing the filling of raw water. The raw water tank 100 can be installed into the countertop water purifier after being filled with sufficient raw water. When the raw water tank 100 is installed, its outlet 101 connects to the raw water inlet 201, thereby supplying raw water to the water purification component 200. The water tank outlet 101 may be equipped with a stop valve (not shown). When the raw water tank 100 is disassembled, raw water cannot flow out through the stop valve; however, when the raw water tank 100 is installed, raw water can reach the raw water inlet 201 connected to the water tank outlet 101 through the stop valve.

[0041] Since the raw water in the raw water tank 100 has almost no pressure, a booster pump 220 can be installed to draw and pressurize the raw water from the raw water tank 100, thereby increasing the output flow rate of the purified water. When the filter element 210 is a low-flow filter element, a purified water tank 31 and a water pump 32 can also be installed on the purified water pipeline 30 between the purified water outlet 202 and the water inlet 10. This allows water production to continue and replenish the purified water tank 31 when the user is not using water, and allows the user to directly draw water from the purified water tank 31 when they need it, thus increasing the water flow rate. Figure 1 In the specific embodiment shown, the water tank 31 and / or the water outlet 202 can also be connected to the cold tank 40, the ice-making component 50, and the heating component 60, etc., to produce cold water, ice cubes, and hot water, respectively, thereby meeting the diverse needs of users.

[0042] The raw water tank 100 may also have a concentrated water inlet 102 for receiving concentrated water from the concentrated water outlet 203 when the environment is not convenient for connecting to drainage facilities. The concentrated water inlet 102 is connected to the concentrated water outlet 203 of the water purification component 200 via a first concentrated water pipeline 400 when the raw water tank 100 is in the installed state.

[0043] It should be noted that the first water supply mode and the second water supply mode may simply be different names for the countertop water purifier when using different water sources. It does not mean that the countertop water purifier must actually have two switchable modes, or that the control logic or actual structure must be substantially adjusted for this purpose.

[0044] In the above technical solution, the table type water purifying and drinking machine can provide tap water to the water purifying assembly 200 through the tap water inlet 80 under the condition of having water supply facilities, i.e. the first water supply mode, without the need for the user to manually supplement the raw water tank 100; and can provide water to the water purifying assembly 200 through the raw water tank 100 under the condition of being unable to connect to tap water, i.e. the second water supply mode. Therefore, the table type water purifying and drinking machine can be used in more scenarios, and the user can have more choices for the source of raw water, i.e. even under the condition of having water supply facilities, the user can choose to supply water from the raw water tank 100. Whether or not there is a drainage facility in the use scenario, the concentrated water can be discharged into the raw water tank 100, and when the table type water purifying and drinking machine is connected to tap water, the idle raw water tank 100 can contain concentrated water until it is full, thus reducing the frequency of the user emptying the water tank. The raw water tank 100 is detachable, which can facilitate the user to pour out the concentrated water and, under the second water supply mode, facilitate the user to fill the raw water tank 100 with raw water.

[0045] Exemplarily, the table type water purifying and drinking machine can further comprise a controller and an in-place sensor (not shown). The in-place sensor is used to detect whether the raw water tank 100 is installed in place. The in-place sensor can comprise one or more of an infrared sensor, a microswitch, a proximity sensor, a Hall sensor, etc. The in-place sensor can generate an analog signal or a digital signal. Exemplarily, the in-place sensor can output an in-place signal when the raw water tank 100 is in the installed state, and interrupt the output of the in-place signal when the raw water tank 100 is in the detached state. Exemplarily, the in-place sensor can send information to the controller in real time, and the controller determines whether the raw water tank 100 is installed in place according to the information.

[0046] The controller is configured to enable the table-top water purifier to make water when the raw water tank 100 is installed in place. As mentioned above, the table-top water purifier can provide purified water, mainly normal temperature water, or hot water, cold water, and / or ice cubes, etc. through the purified water tank 31 when a user takes water. Alternatively, the table-top water purifier can make water through the water making assembly 200 during and / or after the user takes water, for example, the booster pump can be turned on if the table-top water purifier has a booster pump, or the water inlet solenoid valve can be turned on if there is no booster pump and the water making is only through the opening and closing of the water inlet solenoid valve. In summary, the table-top water purifier can make water to replenish the purified water tank 31 and / or other water storage containers such as the cold tank 40. It can be understood that since the purified water assembly 200 needs to discharge concentrated water, in the scheme of returning the concentrated water to the raw water tank 100, the raw water tank 100 needs to be installed in place, so as to receive the concentrated water, no matter whether the table-top water purifier is in the first water supply mode or in the second water supply mode, so as not to cause the concentrated water to flow out of the table-top water purifier. When the raw water tank 100 is installed in place, the controller can determine whether to make water according to the user's water taking information, or the water level information of the purified water tank 31, the cold tank 40, etc. The controller can be built by using electronic elements such as timers, comparators, registers, digital logic circuits, etc., or by using processor chips such as single-chip microcomputers, microprocessors, programmable logic controllers (PLC), digital signal processors (DSP), field programmable gate arrays (FPGA), programmable logic arrays (PLA), application specific integrated circuits (ASIC), and peripheral circuits thereof.

[0047] For example, the table-top water purifier can further comprise a drain 70 connected to the outside world, as shown in Figure 3 The concentrated water outlet 203 of the purified water assembly 200 can be connected to the drain 70 through the second concentrated water pipeline 300. For example, the drain 70 can be connected to a drain pipe, which can be connected to a sewer or a container for collecting concentrated water. The user can use the concentrated water in the container for various purposes when needed. This scheme is particularly suitable for the application scenario of the table-top water purifier in the case of having a drainage facility.

[0048] The table type water purifying and drinking machine can further comprise a valve assembly for controlling the first concentrated water pipeline 400 to be at least cut off in a predetermined direction from the concentrated water inlet 102 of the raw water tank to the concentrated water outlet 203 of the water purifying assembly 200 when the second concentrated water pipeline 300 is open. Specifically, when the second concentrated water pipeline 300 is open, the first concentrated water pipeline 400 can be divided into two cases: 1) unidirectionally open in the direction opposite to the predetermined direction, and the concentrated water can enter the raw water tank 100 through the first concentrated water pipeline 400; 2) the first concentrated water pipeline 400 is cut off in both directions. It is easy to understand that if the valve assembly is not provided, the raw water in the raw water tank 100 can enter the second concentrated water pipeline 300 through the first concentrated water pipeline 400 when the second concentrated water pipeline 300 is open, and flow out from the drain 70.

[0049] In the above technical solution, the user can store or discard the concentrated water through the drain 70, thereby increasing the diversity of user selection. The user can reuse the collected concentrated water to save water. Compared with returning the concentrated water to the raw water tank 100, directly discharging the concentrated water through the drain 70 while supplying water through the raw water tank 100 can reduce the impurity concentration of the raw water in the raw water tank 100, and can prolong the service life of the filter element 210 to a certain extent. After the table type water purifying and drinking machine is used for the first time or the filter element 210 is replaced, the concentrated water proportioning valve 230 can be opened to flush the filter element 210 to clean the protective liquid. After the filter element 210 is used for a period of time, the concentrated water proportioning valve 230 can also be opened to flush the filter element 210, thereby removing the dirt on the surface of the filter element 210 and prolonging the service life of the filter element 210. During the flushing process, the table type water purifying and drinking machine provided with the drain 70 can quickly discharge the contaminated water after flushing from the drain 70 instead of returning to the raw water tank 100, so that the water for flushing the filter element 210 is always relatively clean, and the flushing efficiency of the filter element 210 can be improved. The valve assembly can be provided to allow only the concentrated water to flow out from the drain 70, thereby avoiding leakage of the raw water from the drain 70.

[0050] For example, the second concentrated water line 300 can be shut off. Normally, when the second concentrated water line 300 is open, the concentrated water generates almost no pressure in the first concentrated water line 400. Therefore, almost all the concentrated water flows out from the drain outlet 70 and does not enter the raw water tank 100. When the second concentrated water line 300 is shut off, no concentrated water flows out from the drain outlet 70, and the pressure of the concentrated water can at least overcome the pressure of the raw water in the raw water tank 100 to enter the raw water tank 100. In the case of a countertop water purifier equipped with a valve assembly, the concentrated water can overcome the resistance of the valve assembly and the pressure of the raw water in the raw water tank 100, thus entering the raw water tank 100. In summary, by shutting off the second concentrated water line 300, the countertop water purifier can be switched from discharging concentrated water through the drain outlet 70 to returning concentrated water to the raw water tank 100, which is suitable for various application scenarios, and users can modify it according to their usage environment. As described above, the raw water tank 100 is detachable. When the raw water in the raw water tank 100 is insufficient, the user can detach the raw water tank 100 to easily empty the concentrated water and residual raw water together and replenish it with new raw water.

[0051] As described above, by shutting off the second concentrated water line 300, the concentrated water produced during the water purification process of the water purification component 200 can flow back to the raw water tank 100. Exemplarily, the countertop water purifier may also include a first sealing element (not shown) for opening or closing the drain outlet 70, with the second concentrated water line 300 shut off when the first sealing element closes the drain outlet 70. The first sealing element may include a plug or cap that can be held in place at the drain outlet 70 by threads or friction, thereby preventing concentrated water from flowing out of the drain outlet 70. In this case, the valve assembly can be configured to open automatically under water pressure, thus enabling switching of the concentrated water discharge method of the countertop water purifier at a low cost without control. In embodiments not shown, the first sealing element may also include a mechanical valve or faucet structure located at the drain outlet.

[0052] For example, such as Figure 4 As shown, the countertop water purifier may also include a first concentrated water solenoid valve 310 disposed on the second concentrated water pipeline 300, which is shut off when the first concentrated water solenoid valve 310 is closed. By providing the first concentrated water solenoid valve 310, the countertop water purifier can respond to user operation by preventing concentrated water from flowing out of the drain outlet 70 and allowing the concentrated water to flow back to the raw water tank 100. This eliminates the need for the user to seal the drain outlet 70 with a plug or cover, preventing the loss of the first sealing component and avoiding the aesthetic issue of tying the first sealing component to the countertop water purifier with a rope. When the countertop water purifier is equipped with the first concentrated water solenoid valve 310, the valve assembly can be configured to open automatically under water pressure, or it can be controlled to open and close in a manner opposite to the on / off state of the first concentrated water solenoid valve 310.

[0053] Exemplarily, as mentioned above, the table-top water purifier can further comprise a controller configured to enable the table-top water purifier to make water in the first water supply mode and when the second concentrated water line 300 is determined to be open, regardless of whether the raw water tank 100 is installed in place or not. Since the concentrated water is discharged from the drain 70, there is no concentrated water leakage from the opening of the first concentrated water line 400 that is not connected in the case that the raw water tank 100 is not installed in place. Of course, in the case that the raw water tank 100 is not installed in place, the water purification assembly 200 of the table-top water purifier in the second water supply mode cannot obtain raw water from the raw water tank 100, and cannot replenish the water in the purified water tank 31 and / or the cold tank 40, but generally still can provide the product to the user. In the case that the second concentrated water line 300 is open and the water inlet 80 is connected to the water source (i.e. in the first water supply mode), the table-top water purifier can be used without installing the raw water tank 100. The controller can determine that the second concentrated water line 300 is open by, for example, the switch state of the first concentrated water electromagnetic valve 310 or based on the operation information of the user obtained by the input assembly below.

[0054] The valve assembly can comprise one or more of the following. In Figure 3 In the exemplary embodiment shown, the valve assembly can comprise a second one-way valve 410. The second one-way valve 410 can be provided on the first concentrated water line 400 and configured to be openable in one direction only along the opposite direction to the predetermined direction mentioned above. That is, the second one-way valve 410 can be openable in one direction only along the direction from the concentrated water outlet 203 of the water purification assembly 200 to the water tank concentrated water inlet 102. The second one-way valve 410 can be automatically opened under water pressure without control, and can prevent raw water in the raw water tank 100 from leaking from the drain 70 in the case that the second concentrated water line 300 is open. In the case that the valve assembly only comprises the second one-way valve 410, the second concentrated water line 300 can be blocked by the first blocking member, or can be blocked by the first concentrated water electromagnetic valve 310.

[0055] In the case that there is no water in the raw water tank 100, the concentrated water in the second concentrated water pipeline 300 can pass through the second one-way valve 410 in the conducting direction without much pressure. In the case that there is water in the raw water tank 100, the concentrated water can also pass through the second one-way valve 410 with very small pressure. The second concentrated water pipeline 300 can deposit scale during long-term use, which can further increase the pressure in the second concentrated water pipeline 300 and the part of the first concentrated water pipeline 400 directly connected with the second concentrated water pipeline 300 during the process of discharging the concentrated water. Therefore, the concentrated water can partially pass through the second concentrated water pipeline 300 from the drain 70, and the other part can return to the raw water tank 100 under the action of pressure. Exemplarily, the second one-way valve 410 can be configured to have a large opening pressure, and only when the drain 70 is mostly or even completely closed, the water pressure of the concentrated water can open the second one-way valve 410. In this way, in the case that the second concentrated water pipeline 300 is normally conducted, the second one-way valve 410 can be equivalent to completely cut off the first concentrated water pipeline 400 from two directions, which can prevent the concentrated water from entering the raw water tank 100 and being discharged only through the drain 70, and the user does not need to pour the concentrated water in the raw water tank 100.

[0056] In Figure 4 In the exemplary embodiment shown, the valve assembly can include a second concentrated water electromagnetic valve 420. The second concentrated water electromagnetic valve 420 can be arranged on the first concentrated water pipeline 400, and the second concentrated water electromagnetic valve 420 can be closed in the case that the second concentrated water pipeline 300 is conducted, so as to prevent the raw water of the raw water tank 100 from leaking from the first concentrated water pipeline 400. The second concentrated water electromagnetic valve 420 can also be opened in the case that the second concentrated water pipeline 300 is cut off, so that the concentrated water can pass through the first concentrated water pipeline 400 to enter the raw water tank 100. In this case, the second concentrated water pipeline 300 is preferably cut off by the first concentrated water electromagnetic valve 310, and the first concentrated water electromagnetic valve 310 and the second concentrated water electromagnetic valve 420 do not appear in the state of being opened at the same time or being closed at the same time. Of course, the present application also does not exclude the embodiment of controlling the opening and closing of the second concentrated water electromagnetic valve 420 by detecting the water pressure in the pipeline or according to the blocking condition of the drain 70.

[0057] In yet another exemplary embodiment, the valve assembly can include a switching valve (not shown). The switching valve can include a valve inlet, a first valve outlet and a second valve outlet. The valve inlet can be connected to the concentrated water outlet 203 of the water purifying assembly 200. The first valve outlet can be connected to the inlet of the first concentrated water line 400. The second valve outlet can be connected to the inlet of the second concentrated water line 300. The switching valve allows the valve inlet to be connected to either the first valve outlet or the second valve outlet. By controlling the switching valve, the concentrated water can be controlled to flow back to the raw water tank 100 or to be discharged to the drain 70. In this case, the first blocking member or the first concentrated water solenoid valve 310 is not needed. Of course, the present application does not exclude embodiments in which one or more types of valve assemblies described above are combined with each other.

[0058] Exemplarily, the table-type water purifying and drinking machine can further include a water level detecting assembly and a prompting assembly. The water level detecting assembly is used to detect the water level in the raw water tank 100. The water level detecting assembly can include one or more of an infrared water level meter, a float water level meter, an ultrasonic water level meter, etc. The prompting assembly can include any prompting method such as a sound prompt, a light prompt, an SMS or APP prompt, etc. to send prompt information to the user.

[0059] In the second water supply mode in which the table-top water purifying machine uses the raw water tank 100 to supply water, when the water level in the raw water tank 100 is lower than or equal to the lower water level limit 103, the user needs to manually supplement the raw water in the raw water tank 100. In the case where the concentrated water enters the raw water tank 100 through the concentrated water inlet 102 of the water tank, the user also needs to empty the concentrated water in the raw water tank 100 before supplementing the raw water. In this case, the controller of the table-top water purifying machine can send a prompt message when the water level in the raw water tank 100 is lower than or equal to the lower water level limit according to the water level information. In the case where the table-top water purifying machine is in the first water supply mode and the concentrated water is discharged into the raw water tank 100, the water level in the raw water tank 100 will gradually rise as the water purifying assembly 200 produces purified water. To avoid water overflowing from the raw water tank 100, the controller can also control the prompt assembly to send a prompt message when the water level information indicates that the water level is higher than or equal to the upper water level limit 104. In summary, the prompt assembly can timely remind the user to handle the water in the raw water tank 100 to ensure that the table-top water purifying machine has sufficient water source or to avoid water overflowing from the raw water tank 100. It should be noted that in the case where the second concentrated water pipeline 300 is determined to be connected, since the concentrated water produced in the water production process of the water purifying assembly 200 does not need to flow back to the raw water tank 100, the lower water level limit 103 can be set lower, and can even be the water level at which the raw water tank 100 is empty. In the case where the concentrated water outlet 203 of the water purifying assembly 200 is connected to the second concentrated water pipeline 300 and the first concentrated water pipeline 400, since the concentrated water produced in the water production process of the water purifying assembly 200 can flow back to the raw water tank 100, the lower water level limit 103 can be set higher, for example, the water level at which the concentrated water produced by consuming all the raw water in the full raw water tank 100. In the case where the first water supply mode and the second concentrated water pipeline 300 are connected, the water level in the raw water tank 100 is usually not higher than the upper water level limit 104, and whether the water level in the raw water tank 100 is lower than the lower water level limit 103 does not affect the operation of the table-top water purifying machine. Therefore, the controller can not control the prompt assembly to work according to the water level information.

[0060] In an exemplary embodiment, the controller can detect the water level information in the raw water tank 100 in real time, and control the prompt assembly to send a prompt message to inform the user of the current water level when the water level information indicates that the water level reaches each of the plurality of preset water levels. In this way, the user can make preparations for handling the raw water tank 100 according to the current water level. For example, the user may consider that too much concentrated water in the raw water tank 100 will make the raw water tank 100 too heavy to be poured, and can empty the raw water tank 100 in advance according to the prompt information before the concentrated water reaches the upper water level limit 104. In this way, the user's freedom of choice is increased.

[0061] Exemplarily, the prompt information can include first prompt information and second prompt information, the first prompt information being used to prompt the user to empty the water tank, and the second prompt information being used to prompt the user to fill the water tank. The controller is further configured to control the prompting assembly to issue the first prompt information when the water level information indicates that the water level in the raw water tank 100 is higher than or equal to the upper water level limit 104, when the table-top water purifier is in the first water supply mode. The controller is further configured to control the prompting assembly to issue the second prompt information when the water level information indicates that the water level in the raw water tank 100 is lower than or equal to the lower water level limit, when the table-top water purifier is in the second water supply mode. In one specific embodiment, the prompting assembly can include a voice prompting assembly, the first prompt information can include audio "please empty the raw water tank", and the second prompt information can include audio "please fill the water tank". In this way, the user can be given clear prompt, and the user experience can be improved. Of course, alternatively, the first prompt information and the second prompt information can also take any other suitable form, such as text, arrangement, color and / or flashing pattern of a prompt light, etc.

[0062] Exemplarily, the table-top water purifier can further include an input assembly configured to receive a mode selection operation of the user selecting a water supply mode of the table-top water purifier. Through the input assembly, the user can select whether the table-top water purifier works in the first water supply mode or the second water supply mode. The input assembly can include a touch screen, a button, etc. Alternatively, the input assembly can also include a receiver configured to accept a mode selection operation input by the user through a user operation interface on an electronic device of the user. In summary, the input assembly can be configured to receive a mode selection operation input by the user, and generate mode selection information according to the mode selection operation. The controller can be configured to determine the current water supply mode of the table-top water purifier based on the mode selection information. Exemplarily but not limitatively, the input assembly can be a dial switch. Since the water supply mode of the table-top water purifier will not be frequently switched after installation, to avoid the user from accidentally touching the dial switch during daily use, the dial switch can be arranged at a position which is not easy to be touched during daily use of the table-top water purifier. In this way, there is no need to arrange a detector to detect the water supply state of the table-top water purifier, and only adjustment during installation is needed, and the control logic is simple.

[0063] For example, the desktop water purifier can comprise a pressure detector (not shown) which can be arranged on the tap water inlet 80 or a pipe directly communicating with the tap water inlet 80, which can be the water inlet pipe 600. Since the pipe does not comprise components causing pressure change, the pressure can be considered as the same as that at the tap water inlet. The pressure detector can be used to detect the pressure of the tap water and generate pressure information. The pressure detector can comprise a suitable element such as an analog pressure sensor, a digital pressure sensor or a pressure switch. For example, the pressure detector can comprise a pressure switch which is turned on when the water pressure of the water inlet pipe 600 is greater than a pressure threshold and turned off when the water pressure of the water inlet pipe 600 is less than the pressure threshold. The controller is further configured to determine that the desktop water purifier is in the first water supply mode based on the pressure information when the pressure indicated by the pressure information is higher than or equal to the pressure threshold. It is appreciated that since the tap water has water pressure, the desktop water purifier can be determined to be in the first water supply mode when the tap water inlet 80 is connected to a tap water source. In the case that the pressure detector is the pressure switch, the pressure information indicating that the circuit is turned on means that the pressure is higher than or equal to the pressure threshold. In the case that the pressure detector comprises an analog or digital pressure sensor, the controller needs to compare the pressure indicated by the pressure information with the preset pressure threshold. Conversely, the desktop water purifier can be determined to be in the second water supply mode based on the pressure information when the pressure indicated by the pressure information is lower than the pressure threshold. Thus, the desktop water purifier can automatically determine the water source and control the prompting assembly to issue the prompting information based on the water level information according to different water supply modes. The pressure threshold can be a value or a range of values. Higher than or equal to the pressure threshold means that the current pressure is higher than or equal to the upper limit of the pressure threshold. Lower than the pressure threshold means that the current pressure is lower than the lower limit of the pressure threshold.

[0064] In combination Figure 2 and Figure 3The input component is configured to receive a user's water taking operation and generate water taking information. The desktop water purifier further comprises a water inlet control valve 500, the water outlet of the water inlet control valve 500 is in communication with the water outlet of the first check valve 90 and the raw water inlet 201 in parallel. The controller is further configured to control the water inlet control valve 500 to open and close based on the water taking information in the first water supply mode, and control the water inlet control valve 500 to close in the second water supply mode. The municipal tap water has a certain pressure, and the booster pump 220 is usually a diaphragm pump which does not have a cut-off function. In other words, in the case that the water purifying assembly 200 does not work, water will also flow through the booster pump 220 under the pressure of the tap water at the tap water outlet 80. Since a filter element such as a reverse osmosis filter element or a nanofiltration filter element is used, the filter element has a concentrated water outlet, and the water inlet control valve 500 is arranged to avoid the continuous flow of raw water from the concentrated water outlet 203 into the raw water tank 100 or even overflow in the case that the first concentrated water pipeline 400 is conducted, or the continuous flow of raw water from the drain outlet 70 in the case that the second concentrated water pipeline 300 is conducted. This can also avoid the continuous water production of the filter element under water pressure, which shortens the service life of the filter element.

[0065] In the first water supply mode, when the user takes water, the controller can control the water inlet control valve 500 to provide raw water to the water purifying assembly 200 in time for water production to provide the water purifying tank 31 and the like which need to be replenished due to being taken. In the second water supply mode, since the water source is the raw water tank 100, and the tap water outlet 80 can be open. As described above, closing the water inlet control valve 500 at this time can prevent the raw water in the raw water tank 100 from accidentally flowing out of the tap water outlet 80.

[0066] The water inlet of the water inlet control valve 500 is in communication with the water outlet of the first check valve 90 and the tap water outlet 80, and the water outlet of the water inlet control valve 500 is in communication with the raw water inlet 201, so that when the water inlet control valve 500 is closed, tap water cannot reach the raw water inlet 201, and when the tap water outlet 80 is not connected to tap water and is open, the raw water provided by the raw water tank 100 cannot reach the tap water outlet 80 through the closed water inlet control valve 500. For the Figure 2 In the embodiment shown, the water inlet control valve 500 can be arranged in series before the raw water inlet 201 of the water purifying assembly 200 and the tap water outlet 80, and between the raw water inlet 201 and the water outlet of the first check valve 90. In the case that the water inlet control valve 500 is closed, neither tap water nor raw water in the raw water tank 100 can be used to produce purified water, and the water purifying assembly 200 stops working. Only when the water inlet control valve 500 is open, the desktop water purifier can obtain tap water from the tap water outlet 80 to produce purified water in the first water supply mode, and obtain raw water from the raw water tank 100 to produce purified water in the second water supply mode. Therefore, the controller can control the water inlet control valve to open and close based on the water taking information.

[0067] Exemplarily, the controller is further configured to control the water inlet control valve 500 to be closed when the water level information indicates that the water level in the raw water tank 100 is higher than or equal to the upper water level limit 104. In the case that the concentrated water is discharged to the raw water tank 100 through the first concentrated water pipeline 400, the water level in the raw water tank 100 will gradually increase, as described above. Since the user replenishing the raw water tank 100 with water usually will not cause the water level to be higher than or equal to the upper water level limit 104, it can be considered that the first concentrated water pipeline 400 is open in the case that the water level in the raw water tank 100 is higher than or equal to the upper water level limit 104. If the water purifying assembly 200 continues to produce purified water at this time, it can cause the concentrated water in the raw water tank 100 to overflow. At this time, the water inlet control valve 500 can be closed to stop the water purifying assembly 200 from producing water, thereby preventing the concentrated water from overflowing.

[0068] Exemplarily, the controller is further configured to, when it is determined that the table-top water purifier enters the first water supply mode, issue third prompt information for prompting the user to empty the raw water tank 100 when the water level information indicates that the water level in the raw water tank 100 is higher than or equal to the upper water level limit 104. As described above, if the first concentrated water pipeline 400 is open, the water level in the raw water tank 100 will gradually increase. In this case, emptying the raw water tank 100 can also provide space for storing concentrated water.

[0069] Exemplarily, the controller is further configured to, when it is determined that the table-top water purifier enters the first water supply mode, issue third prompt information for prompting the user to empty the raw water tank 100. In other words, the user can be prompted to empty the raw water tank 100 regardless of whether there is water in the raw water tank 100. As described above, whether the existing water in the raw water tank 100 is raw water or concentrated water, in the first water supply mode, since the pressure of the tap water inlet 80 and the water inlet pipeline 600 is greater than the pressure of the water in the raw water tank 100, the first one-way valve 90 will not open, and the water in the raw water tank 100 will hardly be used again. Emptying the raw water tank 100 can avoid the water in the raw water tank 100 from being stored for a long time and breeding bacteria.

[0070] Referring back to Figure 2For example, the table-top water purifier can further comprise a third one-way valve 601, the water inlet of the third one-way valve 601 is connected to the tap water inlet 80, and the water outlet of the third one-way valve 601 is connected to the water outlet of the first one-way valve 90 and the raw water inlet 201 of the water purifying assembly 200. It is easy to understand that, since the tap water inlet 80 can be arranged at any suitable position of the table-top water purifier, the tap water inlet 80 can not be closed if there is no water source. The user supplies water by using the raw water tank 100. By arranging the third one-way valve 601, even if the height of the tap water inlet 80 is lower than the liquid level in the raw water tank 100, the raw water in the raw water tank 100 will not flow out of the tap water inlet 80. In other embodiments, the height of the tap water inlet 80 is not lower than the top of the raw water tank 100. In this way, even if the tap water inlet 80 can not be closed, the raw water in the raw water tank 100 will not flow out of the tap water inlet 80.

[0071] For example, the table-top water purifier can further comprise a second blocking member for opening or closing the tap water inlet 80, which is used to close the tap water inlet 80 when the table-top water purifier works only in the second water supply mode. The table-top water purifier can be installed in a use scenario where no tap water can be connected. At this time, the tap water inlet 80 is invalid, and to avoid the entry of dust and other foreign matters, it can be closed by the second blocking member. The second blocking member can have a similar shape to the first blocking member or a completely different shape. In this way, the table-top water purifier is generally no longer connected to tap water and works only in the second water supply mode to obtain raw water from the raw water tank 100. For some specific embodiments of the table-top water purifier, only the gravity of the water in the raw water tank 100 is not enough to open the first one-way valve 90. When the booster pump 220 works, a negative pressure is generated at the raw water inlet 201, so that the first one-way valve 90 is opened, and the raw water in the raw water tank 100 can enter the raw water inlet 201. If the tap water inlet 80 is connected to the raw water inlet 201 and is not closed, air can enter to make it difficult to form a negative pressure, the booster pump 220 idles, and the table-top water purifier cannot provide purified water. By closing the tap water inlet 80 by the second blocking member, the negative pressure generated by the booster pump 220 can be maintained to ensure that the raw water in the raw water tank 100 can enter the raw water inlet 201. In this way, the second blocking member not only prevents dust and other foreign matters from entering from the tap water inlet 80 when the table-top water purifier does not use tap water, but also ensures that the table-top water purifier works reliably when using the raw water tank 100 to supply water.

[0072] For the above-mentioned embodiments in which the water inlet control valve 500 can cut off the tap water inlet 80 and the raw water inlet 201, when the water inlet control valve 500 is closed, the booster pump 220 can generate a negative pressure at the water outlet of the first one-way valve 90 and draw raw water from the raw water tank 100.

[0073] In the description of the application, it should be understood that the orientation words such as "front", "back", "up", "down", "left", "right", "transverse", "vertical", "vertical", "horizontal" and "top", "bottom" and the like indicated orientation or positional relationship are generally based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the application and simplifying the description, without the opposite description, these orientation words do not indicate and imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the scope of protection of the application; The orientation words "in", "out" refer to the inside and outside relative to the contour of each component.

[0074] For the convenience of description, the area relative terms such as "on", "above", "upper surface", "upper" and the like can be used herein to describe the area position relationship of one or more components or features shown in the figure with other components or features. It should be understood that the area relative terms not only include the position of the components described in the figure, but also include different positions in use or operation. For example, if the components in the figure are inverted as a whole, the components "above" or "above" other components or features will include the components "below" or "below" other components or structures. Therefore, the exemplary term "above" can include both "above" and "below". In addition, the components or features can also be positioned at other different angles (for example, rotated by 90 degrees or other angles), and all these cases are intended to be included herein.

[0075] It should be noted that the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, it means that the features, steps, operations, components, assemblies and / or combinations thereof are present.

[0076] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the application described herein can be implemented in an order other than those illustrated or described herein.

[0077] The present application has been described by way of the above examples, but it should be understood that the above examples are for illustrative and explanatory purposes only, and are not intended to limit the present application to the scope of the described examples. Furthermore, those skilled in the art can understand that the present application is not limited to the above examples, and that various modifications and changes can be made to the present application according to the teachings of the present application, and that these modifications and changes all fall within the scope of the present application claimed. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A countertop water purifier, characterized in that, has a water inlet for dispensing purified water, and is further characterized in that, The countertop water purifier includes: A water purification component, comprising a raw water inlet, a purified water outlet, and a concentrated water outlet, wherein the purified water outlet is connected to the water intake. The water inlet is used to receive tap water, and the raw water inlet of the water purification component is connected to the tap water inlet, so that the tabletop water purifier has a first water supply mode in which tap water is supplied to the water purification component. First check valve; and The raw water tank is detachable and has a water tank outlet and a concentrated water inlet. in: The water tank outlet is connected to the inlet of the first one-way valve when the raw water tank is in the installed state, and the outlet of the first one-way valve is connected to the raw water inlet of the water purification component, so that the countertop water purifier also has a second water supply mode in which water is supplied from the raw water tank to the water purification component; and The concentrated water inlet of the water tank is connected to the concentrated water outlet of the water purification component via a first concentrated water pipeline when the raw water tank is in the installed state.

2. The countertop water purifier according to claim 1, characterized in that, The tabletop water purifier also includes: A positioning sensor is used to detect whether the raw water tank is installed in place; and A controller is provided to enable the countertop water purifier to produce water when the raw water tank is installed in place.

3. The countertop water purifier according to claim 2, characterized in that, The tabletop water purifier also includes: A drain outlet connected to the outside; the concentrated water outlet of the water purification component is connected to the drain outlet via a second concentrated water pipeline; and A valve assembly for controlling the first concentrate line to be shut off at least along a predetermined direction when the second concentrate line is open, the predetermined direction being the direction from the concentrate inlet of the water tank to the concentrate outlet of the water purification assembly.

4. The countertop water purifier according to claim 3, characterized in that, The second concentrate pipeline can be shut off.

5. The countertop water purifier according to claim 4, characterized in that, The tabletop water purifier also includes: A first sealing element for opening or closing the drain outlet, wherein the second concentrate pipeline is shut off when the first sealing element closes the drain outlet; and / or A first concentrated water solenoid valve is installed on the second concentrated water pipeline, and the second concentrated water pipeline is shut off when the first concentrated water solenoid valve is closed.

6. The countertop water purifier according to claim 3, characterized in that, The countertop water purifier also includes a controller, which is used to enable the countertop water purifier to produce water even when the raw water tank is not installed, in the first water supply mode and when it is determined that the second concentrated water pipeline is connected.

7. The countertop water purifier according to claim 3, characterized in that, The valve assembly includes one or more of the following: A second one-way valve is installed on the first concentrate pipeline, and the second one-way valve is configured to allow unidirectional flow along the predetermined direction. The second concentrated water solenoid valve is installed on the first concentrated water pipeline; as well as The switching valve includes a valve inlet, a first valve outlet, and a second valve outlet. The valve inlet is connected to the concentrated water outlet of the water purification component, the first valve outlet is connected to the inlet of the first concentrated water pipeline, and the second valve outlet is connected to the inlet of the second concentrated water pipeline.

8. The countertop water purifier according to claim 1, characterized in that, The tabletop water purifier also includes: A water level detection component, wherein the water level detection component is used to detect the water level information in the raw water tank; Prompt component; and The controller controls the prompting component to issue a prompt message based on the water level information.

9. The countertop water purifier according to claim 8, characterized in that, The prompt information includes a first prompt information and a second prompt information. The first prompt information is used to prompt the user to empty the water tank, and the second prompt information is used to prompt the user to fill the water tank. The controller is also used for: When the countertop water purifier is in the first water supply mode, and the water level information indicates that the water level in the raw water tank is higher than or equal to the upper limit of the water level, the prompting component is controlled to issue the first prompting information; and When the countertop water purifier is in the second water supply mode, and the water level information indicates that the water level in the raw water tank is lower than or equal to the lower limit of the water level, the prompting component is controlled to issue the second prompt information.

10. The countertop water purifier according to claim 8, characterized in that, The countertop water purifier also includes an input component, which receives a mode selection operation from the user to select the water supply mode of the countertop water purifier and generates mode selection information. The controller is used to determine the current water supply mode of the countertop water purifier based on the mode selection information.

11. The countertop water purifier according to claim 8, characterized in that, The countertop water purifier includes a pressure detector, which is installed at the water inlet or on a pipe directly connected to the water inlet, and is used to detect the pressure of the tap water and generate pressure information. The controller is also used for: Based on the pressure information, when the pressure represented by the pressure information is higher than or equal to the pressure threshold, the countertop water purifier is determined to be in the first water supply mode. Based on the pressure information, when the pressure represented by the pressure information is lower than the pressure threshold, the countertop water purifier is determined to be in the second water supply mode.

12. The countertop water purifier according to any one of claims 8-11, characterized in that, The countertop water purifier includes an input component, which is further used to receive the user's water dispensing operation and generate water dispensing information. The countertop water purifier also includes an inlet control valve, wherein: The inlet of the water inlet control valve is connected to the tap water inlet, and the outlet of the water inlet control valve is connected in parallel with the outlet of the first one-way valve to the raw water inlet. The controller is also used to control the opening and closing of the water inlet control valve based on the water intake information in the first water supply mode, and to control the closing of the water inlet control valve in the second water supply mode; or The inlet of the water inlet control valve is connected to the tap water outlet and the outlet of the first one-way valve, and the outlet of the water inlet control valve is connected to the raw water inlet. The controller is also used to control the opening and closing of the water inlet control valve based on the water intake information.

13. The countertop water purifier according to claim 12, characterized in that, The controller is also used to control the water inlet control valve to close when the water level information indicates that the water level in the raw water tank is higher than or equal to the upper limit of the water level.

14. The countertop water purifier according to claim 8, characterized in that, The controller is also used for: When the countertop water purifier enters the first water supply mode, and the water level information indicates that the water level in the raw water tank is higher than or equal to the upper limit, a third prompt message is issued to remind the user to empty the water tank; or When the countertop water purifier is determined to be in the first water supply mode, a third prompt message is issued to remind the user to empty the water tank.

15. The countertop water purifier according to claim 1, characterized in that: The countertop water purifier includes a third one-way valve, the inlet of which is connected to the tap water outlet, and the outlet of which is connected to the outlet of the first one-way valve and the raw water inlet of the water purification component; and / or The countertop water purifier further includes a second sealing element for opening or closing the water inlet, the second sealing element being used to close the water inlet when the countertop water purifier is operating only in the second water supply mode; and / or The height of the tap water inlet shall not be lower than the top of the raw water tank.

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