Table type water purifying and drinking machine

Abstract

The utility model provides a table type water purifying and drinking machine which is provided with a water taking opening and comprises a raw water tank, a water purifying assembly, a water discharging opening and a valve assembly, and the raw water tank is detachable and comprises a water tank water passing opening and a water tank concentrated water inlet; the water purification assembly comprises a raw water inlet, a purified water outlet and a concentrated water outlet, the purified water outlet is communicated to the water taking opening, and when the raw water tank is in an installation state, the water tank water passing opening is communicated to the raw water inlet, and the water tank concentrated water inlet is connected to the concentrated water outlet through a second concentrated water pipeline; the water outlet is communicated with the outside, and the concentrated water outlet is communicated with the water outlet through a first concentrated water pipeline; the valve assembly is used for controlling the second concentrated water pipeline to be cut off at least in the preset direction when the first concentrated water pipeline is connected, and the preset direction is the direction from the concentrated water inlet of the water tank to the concentrated water outlet of the water purification assembly. A user can discharge the concentrated water out of the table-type water purifying and drinking machine through the water outlet, or the concentrated water flows back to the raw water tank, so that the choice space of the user is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification, and in particular to a desktop water purifier. Background Art

[0002] With the development of the times, water purifiers have been recognized and purchased by most people. Water purifiers can meet users' higher requirements for water quality.

[0003] Currently, water purifiers on the market can be categorized into various models, including built-in, under-sink, and countertop models, depending on their usage scenarios. Countertop water purifiers are particularly popular due to their ease of installation and extensive functionality. These purifiers typically utilize a water tank for their water supply. For those using reverse osmosis or nanofiltration filters, the tank not only stores the raw water used for water production but also the concentrated water generated during the process. When changing water, users must first discard the concentrated water and then replenish it with fresh raw water.

[0004] In some usage scenarios where there are drainage facilities such as sewers, current desktop water purifiers cannot directly use the drainage facilities to drain water, and users still need to manually pour the concentrated water in the water tank into the drainage facilities, which brings inconvenience to users. Utility Model Content

[0005] To at least partially address the problems existing in the prior art, some embodiments of the present invention provide a tabletop water purifier having a water inlet. The tabletop water purifier includes: a removable raw water tank including a water inlet and a concentrate inlet; a water purification assembly including a raw water inlet, a purified water outlet, and a concentrate outlet, the purified water outlet being connected to the water inlet. When the raw water tank is installed, the water inlet is connected to the raw water inlet, and the concentrate inlet is connected to the concentrate outlet via a second concentrate pipeline; a drain outlet communicating with the outside world, and the concentrate outlet is connected to the drain outlet via a first concentrate pipeline; and a valve assembly configured to control the second concentrate pipeline to be closed at least along a predetermined direction when the first concentrate pipeline is open, the predetermined direction being the direction from the concentrate inlet to the concentrate outlet of the water purification assembly. In this technical solution, users can store raw water in the raw water tank. Users can also drain the concentrate from the tabletop water purifier through the drain outlet or return it to the raw water tank, thereby increasing user options. When the concentrated water is discharged directly through the drain port, the concentration of the raw water can be reduced compared to discharging the concentrated water into the raw water tank, which can extend the service life of the filter element to a certain extent and improve the flushing efficiency when flushing the filter element. In cases where it is inconvenient to discharge the concentrated water to the outside through the drain port, the concentrated water can be returned to the raw water tank through the valve assembly, making the desktop water purifier suitable for various applications. The valve assembly allows the concentrated water to be switched between being discharged through the drain port and being returned to the raw water tank, and the raw water will not leak from the drain port. The above-mentioned concentrated water discharge solution can also be applied to desktop water purifiers with various functions, and basically will not have a significant impact on the existing equipment layout.

[0006] For example, the first concentrated water line can be shut off. By shutting off the first concentrated water line, the tabletop water purifier can switch from discharging concentrated water through the drain to returning concentrated water to the raw water tank. This is applicable to various application scenarios, and the models and types of tabletop water purifiers can be standardized and customized according to the user's usage environment.

[0007] For example, the tabletop water purifier further includes a blocking member for opening or closing the drain outlet, and the first concentrated water pipeline is cut off when the blocking member closes the drain outlet. This allows switching of the concentrated water discharge mode of the tabletop water purifier to be achieved at a low cost without requiring any control.

[0008] For example, the tabletop water purifier further includes a first concentrated water solenoid valve disposed on the first concentrated water pipeline. The first concentrated water pipeline is closed when the first concentrated water solenoid valve is closed. This eliminates the need for users to seal the drain outlet with a plug or cover, preventing the risk of losing the sealing member or tying the sealing member to the tabletop water purifier with a rope, which would affect the appearance.

[0009] Exemplarily, the valve assembly includes one or more of the following: a first one-way valve, disposed in the second brine pipeline, configured to allow unidirectional flow in a direction opposite to a predetermined direction; a second brine solenoid valve, disposed in the second brine pipeline; and a switching valve, comprising a valve inlet, a first valve outlet, and a second valve outlet, wherein the valve inlet is connected to the brine outlet of the water purification assembly, the first valve outlet is connected to the inlet of the second brine pipeline, and the second valve outlet is connected to the inlet of the first brine pipeline. By controlling the switching valve, the brine can be discharged to the drain or returned to the raw water tank, without requiring a sealing member or the first brine solenoid valve.

[0010] For example, a tabletop water purifier includes a water level detection assembly for detecting the water level in a raw water tank; a prompting device; and a controller for controlling the prompting device to issue a prompt when the water level falls below or equals a lower limit. The prompting device can promptly remind the user to replace the water in the raw water tank to ensure sufficient water in the tabletop water purifier.

[0011] For example, a tabletop water purifier includes a water quality detection component for detecting the quality of water in a raw water tank; a prompting device; and a controller for controlling the prompting device to issue a prompt message when the water quality does not meet standards. This can extend the life of the filter element when the tabletop water purifier is using a water source with poor quality.

[0012] For example, the tabletop water purifier also includes: a tap water inlet; a water inlet control valve, the water inlet of the water inlet control valve being connected to the tap water inlet via a water inlet pipeline, and the water outlet of the water inlet control valve being connected to the water tank outlet; and a water level detection assembly for detecting the water level in the raw water tank; the water inlet control valve closes when the water level is above or equal to the upper water level limit. This allows for cost-effective control of water replenishment in the raw water tank through a simple structure. Due to the presence of the raw water tank, in the event of a water outage, the tabletop water purifier can still provide the user with the required purified water for a period of time using the raw water stored in the raw water tank.

[0013] For example, the tabletop water purifier also includes a controller configured to control the water inlet control valve to open when the water level is below or equal to the lower water level limit, and to control the water inlet control valve to close when the water level is above or equal to the upper water level limit. This allows for timely replenishment of raw water in the raw water tank. The water inlet control valve only opens when the water level is below or equal to the lower water level limit, resulting in a longer opening interval and preventing the lifespan of the water tank from being shortened due to frequent operation. Furthermore, by only replenishing the raw water tank when the water level is below or equal to the lower water level limit, frequent noise generation is avoided, significantly improving the user experience.

[0014] For example, the tabletop water purifier further includes a second one-way valve disposed on the water inlet pipe. The second one-way valve allows one-way flow from the tap water inlet to the raw water inlet of the water purification assembly. Even if the tap water inlet is lower than the liquid level in the raw water tank, raw water in the raw water tank will not flow out of the tap water inlet.

[0015] For example, the height of the water inlet is not lower than the top of the raw water tank. Even if the water inlet is not closed, the raw water in the raw water tank will not flow out of the water inlet.

[0016] The Summary of the Utility Model introduces a series of simplified concepts, which will be further described in detail in the Detailed Description of the Utility Model. This Summary of the Utility Model does not intend to limit the key features and essential technical features of the claimed technical solution, nor does it intend to determine the scope of protection of the claimed technical solution.

[0017] The advantages and features of the present invention are described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following drawings of the present invention are used as part of the present invention for understanding the present invention. The drawings show the embodiments of the present invention and their descriptions, and are used to explain the principles of the present invention. In the drawings,

[0019] Figure 1 1 is a water circuit diagram of a tabletop water purifier according to a first exemplary embodiment of the present invention;

[0020] Figure 2 1 is a water circuit diagram of a tabletop water purifier according to a second exemplary embodiment of the present invention;

[0021] Figure 3 FIG1 is a water circuit diagram of a tabletop water purifier according to a third exemplary embodiment of the present invention;

[0022] Figure 4 It is a water circuit diagram of a tabletop water purifier according to a fourth exemplary embodiment of the present utility model.

[0023] The above drawings include the following reference numerals:

[0024] 10. Water intake; 20. Water outlet; 30. Clean water circuit; 31. Clean water tank; 32. Water pump; 40. Refrigerator; 50. Ice-making assembly; 60. Heating assembly; 70. Drain; 80. Tap water inlet; 100. Raw water tank; 101. Water tank inlet; 102. Concentrated water inlet; 103. Lower water level limit; 104. Upper water level limit; 200. Water purification assembly; 201. Raw water inlet; 202. Clean water outlet; 203. Concentrated water outlet; 210. Filter element; 220. Booster pump; 230. Concentrated water proportional valve; 300. First concentrated water pipeline; 310. First concentrated water solenoid valve; 400. Second concentrated water pipeline; 410. First one-way valve; 420. Second concentrated water solenoid valve; 500. Water inlet control valve; 600. Water inlet pipeline; 601. Second one-way valve. DETAILED DESCRIPTION

[0025] In the following description, numerous details are provided to facilitate a thorough understanding of the present invention. However, those skilled in the art will appreciate that the following description merely illustrates preferred embodiments of the present invention, and that the present invention may be practiced without one or more of these details. Furthermore, to avoid confusion with the present invention, some technical features well known in the art have not been described in detail.

[0026] To thoroughly understand the embodiments of the present invention, a detailed structure will be provided in the following description. Obviously, the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other embodiments.

[0027] The embodiment of the present invention provides a tabletop water purifier. The tabletop water purifier according to the embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] like Figure 1 As shown, the tabletop water purifier can have a water inlet 10, which can be formed by a water outlet 20 or a faucet provided on the tabletop water purifier. The tabletop water purifier can also include a raw water tank 100 and a water purification assembly 200. The raw water tank 100 is used to store raw water, and the water purification assembly 200 includes a raw water inlet 201 and a purified water outlet 202. The water purification assembly 200 can filter the raw water entering the raw water inlet 201 and provide purified water from the purified water outlet 202. This allows the tabletop water purifier to be provided to the user by purifying the raw water in the raw water tank 100 even when it is inconvenient to connect to tap water.

[0029] The raw water tank 100 is constructed to be detachable. In some embodiments, the raw water tank 100 can be filled with raw water while detached. By way of example, and not limitation, the raw water tank 100 may include a water filling port (not shown) through which a user can add raw water to the raw water tank 100. Raw water may include, but is not limited to, bottled water, well water, or tap water. By way of example, and not limitation, the water filling port may be located at the bottom of the raw water tank 100 and may have a larger opening and a lid to facilitate the user's filling of raw water and prevent spillage. This allows the upper portion of the raw water tank 100 to be more concise, improving the user experience. A detachable raw water tank 100 makes it easier for the user to carry it to a water source, such as a tap. To facilitate transport, the upper portion of the raw water tank 100 may also be provided with a handle or other structure. The handle provided on the upper portion will not interfere with the filling of raw water through the lower water filling port.

[0030] The raw water tank 100 may include a tank outlet 101. The tank outlet 101 may be connected to the raw water inlet 201, thereby providing raw water to the water purification component 200. In some embodiments below, the tank outlet 101 may also be used to receive raw water. The tank outlet 101 may be provided at the 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 may be provided at the top of the raw water tank, and raw water may be extracted from the raw water tank via a pipe inserted from the tank outlet into the raw water tank. Alternatively, the tank outlet may include a first tank outlet and a second tank outlet, wherein the first tank outlet may be connected to the raw water inlet 201 of the water purification component 200, and the second tank outlet may receive raw water. The raw water tank 100 can be installed in the tabletop water purifier after being filled with a sufficient amount of raw water. When the raw water tank 100 is installed, the water tank outlet 101 is connected to the raw water inlet 201, thereby providing raw water to the water purification assembly 200. The water tank outlet 101 can be equipped with a water stop valve (not shown). When the raw water tank 100 is disassembled, raw water cannot flow out through the water stop valve. However, when the raw water tank 100 is installed, raw water can pass through the water stop valve and reach the raw water inlet 201 connected to the water tank outlet 101.

[0031] In some embodiments, the water inlet of the raw water tank 100 can be the same opening as the water tank outlet 101, thereby reducing the number of openings on the raw water tank 100 and making the structure more concise. Of course, in other embodiments, the water inlet and the water tank outlet 101 can also be different openings.

[0032] Continue to refer Figure 1The water purification assembly 200 may include a filter element 210. The filter element 210 may include, for example, an activated carbon filter element, a PP filter element, a ceramic filter element, a resin filter element, an ultrafiltration filter element, a nanofiltration filter element, a reverse osmosis filter element, or a composite filter element composed of one or more of these filter elements. Nanofiltration and reverse osmosis filter elements require appropriate pressure for operation, so the water purification assembly 200 may also include a booster pump 220. Nanofiltration and reverse osmosis filter elements also produce a certain proportion of brine during operation. Therefore, a water purification assembly 200 including either or both of these filter elements may also be provided with a brine outlet 203. Brine outlet 203 is connected to the brine inlet of the filter element 210 via a brine proportional valve 230. When the brine proportional valve 230 is closed, it maintains the pressure required for the normal operation of the filter element 210. When the brine proportional valve 230 is open, raw water can quickly pass through the filter element 210 and the brine proportional valve 230, thereby flushing the filter element 210. The filter element 210 can filter the raw water to remove harmful bacteria, heavy metals and other impurities, providing users with high-quality purified water.

[0033] As mentioned above, the filter element 210 may include a reverse osmosis filter element. The pore size of the reverse osmosis filter element is one-millionth of a hair (0.1 nanometers), and the number of bacteria and viruses that are generally invisible to the naked eye is 10 times that of a reverse osmosis filter element. Therefore, only water molecules and some mineral ions that are beneficial to the human body can pass through, and other impurities and heavy metals are discharged from the concentrated water outlet to provide users with high-quality purified water. The daily water production of the reverse osmosis filter element is positively correlated with its price, so the filter element 210 can adopt a small-flux filter element with a daily water production of no more than 400 gallons. Under the premise of meeting the basic needs of users, costs can be greatly reduced and the size of the desktop water purifier can be reduced. For the sake of ease of description, the following detailed description is given using the example of a small-flux reverse osmosis filter element in the filter element 210.

[0034] Since the raw water in the raw water tank 100 has almost no pressure, the booster pump 220 can be set to extract raw water from the raw water tank 100 and pressurize it to increase the output flow of the purified water. The purified water outlet 202 can be connected to the water intake 10 to provide purified water to the user. In the case where the filter element 210 is a small-flux filter element, a purified water tank 31 and a water pump 32 can also be set on the purified water waterway 30 between the purified water outlet 202 and the water intake 10, so as to continue to produce water and fill the purified water tank 31 when the user is not taking water, to prevent the water flow from being too small when the user takes water and affecting the user experience. Figure 1In the illustrated embodiment, the clean water tank 31 and / or clean water outlet 202 can also be connected via pipes to the cooling element 40, ice-making assembly 50, and heating assembly 60, respectively, to produce cold water, ice cubes, and hot water, thereby meeting the diverse needs of users. The tabletop water purifier can include a drain outlet 70 that can communicate with the outside world. The concentrate outlet 203 is connected to the drain outlet 70 via a first concentrate pipeline 300. For example, the drain outlet 70 can be connected to a drain pipe that can be connected to a sewer or a container for collecting concentrate. The concentrate in the container can be used for various purposes as needed. When using the tabletop water purifier for the first time or after replacing the filter cartridge 210, the concentrate proportioning valve 230 can be opened to rinse the filter cartridge 210 to remove the protective fluid. After the filter cartridge 210 has been used for a period of time, the concentrate proportioning valve 230 can also be opened to rinse the filter cartridge 210 to remove dirt from the surface of the filter cartridge 210 and extend its service life. During the flushing process, the desktop water purifier provided with a drain outlet 70 can quickly discharge the contaminated water after flushing from the drain outlet 70 instead of flowing back to the raw water tank 100, so that the water used to flush the filter element 210 is always relatively clean, which can improve the flushing efficiency of the filter element 210.

[0035] The raw water tank 100 may also include a water tank concentrate inlet 102, which is connected to the concentrate outlet 203 of the water purification assembly 200 via a second concentrate pipeline 400 when the raw water tank 100 is installed. In some application scenarios, it may be inconvenient for a desktop water purifier to discharge concentrate to the outside of the desktop water purifier through the drain outlet 70. For example, the desktop water purifier may be placed in a bedroom or office. In this case, the concentrate can be discharged to the raw water tank 100 via the second concentrate pipeline 400. In some specific embodiments, a partition may be provided in the raw water tank 100 to partially separate the water tank concentrate inlet 102 from the water tank outlet 101, thereby reducing the proportion of concentrate mixed with the raw water or preventing the concentrate from mixing with the raw water. To make the tabletop water purifier compatible with various usage scenarios, it may also include a valve assembly. This valve assembly is used to control the second brine line 400 to be blocked along at least a predetermined direction when the first brine line 300 is open. The predetermined direction is the direction from the water tank brine inlet 102 to the brine outlet 203 of the water purification assembly 200. Specifically, when the first brine line 300 is open, the second brine line 400 can flow in two ways: 1) unidirectionally, in the opposite direction from the predetermined direction, allowing brine to flow through the second brine line 400 into the raw water tank 100; or 2) bidirectionally blocked. As will be readily understood, without the valve assembly, raw water in the raw water tank 100 could flow through the second brine line 400 into the first brine line 300 and out of the drain 70 when the first brine line 300 is open. The valve assembly allows brine to flow only through the drain 70, preventing leakage from this location.

[0036] In the above technical solution, users can store raw water in the raw water tank 100. Users can also drain the concentrated water from the tabletop water purifier through the drain port 70 or return the concentrated water to the raw water tank 100, thereby increasing user options. Directly draining the concentrated water through the drain port 70 reduces the raw water concentration compared to draining the concentrated water into the raw water tank 100, extending the service life of the filter element 210 to a certain extent and improving filter element flushing efficiency. If draining the concentrated water to the outside through the drain port 70 is inconvenient, the concentrated water can be returned to the raw water tank 100 via the valve assembly, making the tabletop water purifier suitable for a variety of applications. The valve assembly allows the concentrated water to be switched between being discharged through the drain port 70 and being returned to the raw water tank 100, without leaking the raw water from the drain port 70. This concentrated water discharge solution can also be applied to tabletop water purifiers with various functions, with minimal impact on existing equipment layout.

[0037] For example, the first concentrate line 300 can be blocked. Normally, when the first concentrate line 300 is open, the concentrate generates almost no pressure in the second concentrate line 400. Therefore, almost all of the concentrate flows out of the drain outlet 70 and does not enter the raw water tank 100. When the first concentrate line 300 is blocked, no concentrate flows out of the drain outlet 70, and the concentrate pressure can at least overcome the pressure of the raw water in the raw water tank 100 and enter the raw water tank 100. If the tabletop water purifier is equipped with a valve assembly, the concentrate can overcome the resistance of the valve assembly and the pressure of the raw water in the raw water tank 100 and enter the raw water tank 100. In short, by blocking the first concentrate line 300, the tabletop water purifier can switch from discharging concentrate through the drain outlet 70 to returning concentrate to the raw water tank 100. This makes it suitable for various application scenarios, and the models and types of tabletop water purifiers can be standardized and customized according to the user's 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 conveniently empty the concentrated water and the remaining raw water together and replenish new raw water.

[0038] As described above, by cutting off the first concentrated water pipeline 300, the concentrated water generated during the water production process of the water purification component 200 can be returned to the raw water tank 100. Exemplarily, the desktop water purifier may also include a plug (not shown) for opening or closing the drain outlet, and the first concentrated water pipeline 300 is cut off when the plug closes the drain outlet. The plug may include a plug or a cover, which can be retained at the drain outlet 70 by threads or friction, thereby preventing the concentrated water from flowing out of the drain outlet 70. In this case, the valve assembly can be constructed to open automatically under water pressure, so that the switching of the concentrated water discharge mode of the desktop water purifier can be achieved at a lower cost without control. In an embodiment not shown, the plug may also include a mechanical valve or faucet provided at the drain outlet.

[0039] For example, the tabletop water purifier may further include a first concentrate solenoid valve 310 disposed on the first concentrate line 300. The first concentrate line 300 is closed when the first concentrate solenoid valve 310 is closed. By providing the first concentrate solenoid valve 310, the tabletop water purifier can, in response to user operation, prevent concentrate from flowing out of the drain outlet 70 via the first concentrate solenoid valve 310 and allow the concentrate to flow back into the raw water tank 100. This eliminates the need for users to seal the drain outlet 70 with a plug or cover, eliminating the risk of losing the seal or tying the seal to the tabletop water purifier with a cord, which would affect its aesthetics. When the tabletop water purifier is equipped with the first concentrate solenoid valve 310, the valve assembly can be configured to open automatically under water pressure, or to be controlled to open and close in a manner opposite to the opening and closing of the first concentrate solenoid valve 310.

[0040] The valve assembly may include one or more of the following. Figure 1 In the exemplary embodiment shown, the valve assembly can include a first one-way valve 410. The first one-way valve 410 can be disposed on the second brine pipeline 400 and configured to be unidirectionally openable in a direction opposite to the predetermined direction described above. Specifically, the first one-way valve 410 can be unidirectionally openable in a direction from the brine outlet 203 of the water purification assembly 200 to the brine inlet 102 of the water tank. The first one-way valve 410 can automatically open under water pressure without requiring control, and can prevent raw water in the raw water tank 100 from leaking out of the drain 70 when the first brine pipeline 300 is open. If the valve assembly includes only the first one-way valve 410, the first brine pipeline 300 can be closed by a blocking member or by the first brine solenoid valve 310.

[0041] For example, if the first check valve 410 is a diaphragm-type check valve, the brine in the second brine pipeline only needs to overcome the pressure of the water in the raw water tank 100 in the direction of the first check valve 410, allowing it to pass through with minimal pressure. However, scale may accumulate in the first brine pipeline 300 over extended use, further increasing the pressure within the first brine pipeline 300 and the second brine pipeline 400 directly connected to the first brine pipeline 300. Consequently, some brine may be discharged from the drain outlet 70 through the first brine pipeline 300, while another portion, under pressure, returns to the raw water tank 100. For example, the first check valve 410 can be configured to have a high opening pressure, so that the brine pressure can only open the first check valve 410 when the drain outlet 70 is mostly or even completely blocked. In this way, when the first concentrated water pipeline 300 is normally connected, the first one-way valve 410 is equivalent to completely cutting off the second concentrated water pipeline 400 from two directions, which can prevent the concentrated water from entering the raw water tank 100 and only discharge it through the drain port 70. The user does not need to dump the concentrated water in the raw water tank 100.

[0042] exist Figure 2 In the exemplary embodiment shown, the valve assembly may include a second concentrate solenoid valve 420. The second concentrate solenoid valve 420 may be disposed on the second concentrate pipeline 400. The second concentrate solenoid valve 420 may be closed when the first concentrate pipeline 300 is open, thereby preventing raw water from the raw water tank 100 from leaking through the second concentrate pipeline 400. The second concentrate solenoid valve 420 may also be opened when the first concentrate pipeline 300 is blocked, allowing concentrate to enter the raw water tank 100 through the second concentrate pipeline 400. In this case, the first concentrate pipeline 300 is preferably blocked by the first concentrate solenoid valve 310, so that the first concentrate solenoid valve 310 and the second concentrate solenoid valve 420 cannot be simultaneously open or closed. Of course, this application does not exclude embodiments in which the opening and closing of the second concentrate solenoid valve 420 is controlled by detecting the water pressure within the pipeline or based on the blockage of the drain outlet 70.

[0043] In another exemplary embodiment, the valve assembly may include a switching valve (not shown). The switching valve may include a valve inlet, a first valve outlet, and a second valve outlet. The valve inlet may be connected to the concentrate outlet 203 of the water purification assembly 200, the first valve outlet may be connected to the inlet of the first concentrate pipeline 300, and the second valve outlet may be connected to the inlet of the second concentrate pipeline 400. By controlling the switching valve, the concentrate can be discharged to the drain 70 or controlled to flow back into the raw water tank 100. In this case, no sealing member or first concentrate solenoid valve 310 is required. Of course, this application does not exclude embodiments in which one or more of the above-mentioned valve assemblies are combined with each other.

[0044] For example, the tabletop water purifier may further include a water level detection component, a prompting device, and a controller. The water level detection component is used to detect the water level in the raw water tank 100. The water level detection component may include one or more suitable sensors, such as an infrared water level gauge, a float water level gauge, an ultrasonic water level gauge, etc. The prompting device may include any method, such as sound prompts, light prompts, text messages, or app prompts, to provide prompts to the user.

[0045] The controller can be constructed using electronic components such as timers, comparators, registers, and digital logic circuits, or implemented using processor chips such as single-chip microcomputers, microprocessors, programmable logic controllers (PLCs), digital signal processors (DSPs), field programmable gate arrays (FPGAs), programmable logic arrays (PLAs), and application-specific integrated circuits (ASICs), along with their peripheral circuits. The controller is used to control the prompt device to issue a prompt message when the water level in the raw water tank 100 falls below the lower water level limit 103. In the embodiments described above, the tabletop water purifiers all use the raw water tank 100 as a water source. When the water level in the raw water tank 100 falls below the lower water level limit 103, the user is required to manually replenish the raw water in the raw water tank 100. Furthermore, if concentrated water enters the raw water tank 100 through the concentrated water inlet 102, the user is required to empty the concentrated water in the raw water tank 100 and then replenish it with sufficient raw water. In short, the prompt device can promptly remind the user to replace the water in the raw water tank 100, ensuring a sufficient water supply for the tabletop water purifier. It should be noted that, when the concentrate outlet 203 of the water purification assembly 200 is connected only to the first concentrate pipeline 300, the concentrate produced during the water production process of the water purification assembly 200 does not need to flow back to the raw water tank 100. Therefore, the lower water level limit 103 can be set lower, or even the water level at which the raw water tank 100 is empty. When the concentrate outlet 203 of the water purification assembly 200 is connected to both the first concentrate pipeline 300 and the second concentrate pipeline 400, the concentrate produced during the water production process of the water purification assembly 200 may flow back to the raw water tank 100. Therefore, the lower water level limit 103 can be set higher, for example, to the water level at which concentrate can be produced after all the raw water in the full raw water tank 100 is consumed.

[0046] Exemplarily, the desktop water purifier may also include a water quality detection component, which is used to detect the water quality in the raw water tank 100. Specifically, the water quality detection component can be detected using a total dissolved solids (TDS) detector. In the case where concentrated water flows back to the raw water tank 100, if the TDS value of the raw water in the raw water tank 100 is too high, it may affect the service life of the filter element 210 and even cause the quality of the purified water provided to deteriorate. By setting up a water quality detection component, the controller can promptly determine whether the water quality is too bad. And when the water quality does not meet the standard, the control prompt device sends a prompt message to remind the user to empty the raw water tank 100 in time. In this case, the user may need to change the water before the raw water level in the raw water tank 100 is lower than the lower limit 103 of the water level. To improve detection accuracy, the detection portion of the water quality detection assembly, such as the TDS probe, can be installed at the water tank outlet 101 or in the pipeline connecting the water tank outlet 101 and the raw water inlet 201. This will not be affected by the concentrated water just discharged into the raw water tank 100. This can extend the service life of the filter element 210 when the tabletop water purifier is used with a water source of poor quality.

[0047] like Figure 3 In the exemplary embodiment shown, the tabletop water purifier may further include a tap water inlet 80 and a water inlet control valve 500. The water inlet of the water inlet control valve 500 is connected to the tap water inlet 80 via a water inlet pipe 600. The water outlet of the water inlet control valve 500 is connected to the water tank inlet 101. When the tabletop water purifier is connected to tap water, the raw water tank 100 can be topped up with the tap water when the water level in the raw water tank 100 is low. The tabletop water purifier may further include a water level detection assembly for detecting the water level in the raw water tank 100. For example, the water inlet control valve 500 may be a mechanical valve such as a float valve, and the water level detection assembly may be a float connected to the float valve. When the water level detected by the water level detection assembly is above or equal to the upper water level limit 104, the water inlet control valve 500 closes. This allows for cost-effective control of water replenishment in the raw water tank 100 through a simple structure. Due to the presence of the raw water tank 100, the tabletop water purifier can still provide users with the clean water they need for a period of time in the event of a water outage using the raw water stored in the tank 100. Since the water level in the tank 100 is replenished as soon as it drops, if concentrated water flows back into the tank 100, the user may not empty the concentrated water in the tank 100. In this case, concentrated water may accumulate in the tank 100, resulting in an increasingly concentrated raw water. To address this, the tabletop water purifier can use the aforementioned water quality detection component or a timer function to remind the user to empty the tank 100. However, when the concentrated water is discharged through the drain outlet 70, there is no need to empty the tank 100.

[0048] For example, the water inlet control valve may also include a valve controllable by a controller, such as a water inlet solenoid valve. In this case, for example, the tabletop water purifier may further include a controller configured to control the water inlet control valve 500 to open when the water level is below or equal to the lower water level limit 103, and to control the water inlet control valve 500 to close when the water level is above or equal to the upper water level limit 104. This allows for timely replenishment of raw water in the raw water tank 100. Furthermore, the water inlet control valve 500 only opens when the water level is below or equal to the lower water level limit 103, resulting in a longer opening interval and preventing the lifespan of the water tank from being shortened due to frequent operation. Furthermore, replenishing the raw water tank 100 only when the water level is below or equal to the lower water level limit 103 prevents frequent noise generation, significantly improving the user experience.

[0049] like Figure 4 As shown, for example, the tabletop water purifier may further include a second one-way valve 601 disposed on the water inlet pipe 600. The second one-way valve 601 provides one-way flow from the tap water inlet 80 to the raw water inlet 201 of the water purification assembly. It will be readily understood that the tap water inlet 80 may be located at any suitable location on the tabletop water purifier and, if there is no water source, may not be sealed. The user uses the raw water tank 100 for water supply. By providing the second one-way valve 601, even if 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 tap water inlet 80 is not lower than the top of the raw water tank 100. Thus, even if the tap water inlet 80 is not sealed, the raw water in the raw water tank 100 will not flow out of the tap water inlet 80.

[0050] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front", "back", "up", "down", "left", "right", "horizontal", "vertical", "vertical", "horizontal", "top", "bottom", etc. are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside" and "outside" refer to the inside and outside relative to the outline of each component itself.

[0051] For ease of description, area-relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the regional positional relationship between one or more components or features shown in the figures and other components or features. It should be understood that area-relative terms include not only the orientation of the components as described in the figures, but also different orientations in use or operation. For example, if the components in the drawings are inverted as a whole, the situation where the components are "above other components or features" or "above other components or features" will include the situation where the components are "below other components or structures" or "below other components or structures". Thus, the exemplary term "above" may include both the orientations "above" and "below". In addition, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this document is intended to include all of these situations.

[0052] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, parts, components and / or combinations thereof.

[0053] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0054] The present invention has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative and illustrative purposes only and are not intended to limit the present invention to the described embodiments. Furthermore, those skilled in the art will appreciate that the present invention is not limited to the above embodiments and that various variations and modifications may be made based on the teachings of the present invention, all of which fall within the scope of the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A desktop water purifier with a water inlet, characterized in that: The tabletop water purifier comprises: A raw water tank, which is detachable and includes a water inlet and a concentrated water inlet; a water purification assembly, the water purification assembly comprising a raw water inlet, a purified water outlet, and a concentrated water outlet, the purified water outlet being connected to the water intake, wherein, when the raw water tank is in an installed state: the water tank water inlet is connected to the raw water inlet, and the concentrated water inlet of the water tank is connected to the concentrated water outlet via a second concentrated water pipeline; a drain port, the drain port being connected to the outside, the concentrated water outlet being connected to the drain port via a first concentrated water pipeline; and A valve assembly is used to control the second concentrated water pipeline to be cut off at least along a predetermined direction when the first concentrated water pipeline is connected, and the predetermined direction is the direction from the concentrated water inlet of the water tank to the concentrated water outlet of the water purification component.

2. The tabletop water purifier according to claim 1, characterized in that: The first concentrated water pipeline can be cut off.

3. The tabletop water purifier according to claim 2, characterized in that: The tabletop water purifier also includes: a plugging member for opening or closing the drain outlet, wherein the first concentrated water pipeline is cut off when the plugging member closes the drain outlet; and / or A first concentrated water solenoid valve is provided on the first concentrated water pipeline, and the first concentrated water pipeline is cut off when the first concentrated water solenoid valve is closed.

4. The tabletop water purifier according to claim 1, characterized in that: The valve assembly includes one or more of the following: a first one-way valve, the first one-way valve being disposed on the second concentrated water pipeline, the first one-way valve being configured to conduct water in a one-way manner in a direction opposite to the predetermined direction; a second concentrated water solenoid valve, the second concentrated water solenoid valve being arranged on the second concentrated water pipeline; as well as A switching valve, the switching valve includes a valve water inlet, a first valve water outlet and a second valve water outlet, the valve water inlet is connected to the concentrated water outlet of the water purification component, the first valve water outlet is connected to the water inlet of the second concentrated water pipeline, and the second valve water outlet is connected to the water inlet of the first concentrated water pipeline.

5. The tabletop water purifier according to any one of claims 1 to 4, characterized in that: The tabletop water purifier comprises: A water level detection component, the water level detection component is used to detect the water level in the raw water tank; prompting device; and A controller is used to control the prompt device to issue a prompt message when the water level is lower than or equal to the lower limit of the water level.

6. The tabletop water purifier according to any one of claims 1 to 4, characterized in that: The tabletop water purifier comprises: A water quality detection component, the water quality detection component is used to detect the water quality in the raw water tank; prompting device; and A controller is provided for controlling the prompt device to send a prompt message when the water quality does not meet the standard.

7. The tabletop water purifier according to any one of claims 1 to 4, characterized in that: The tabletop water purifier also includes: Water outlet; a water inlet control valve, wherein the water inlet of the water inlet control valve is connected to the tap water inlet through a water inlet pipeline, and the water outlet of the water inlet control valve is connected to the water outlet of the water tank; and A water level detection component, the water level detection component is used to detect the water level in the raw water tank; The water inlet control valve is closed when the water level is higher than or equal to the upper water level limit.

8. The tabletop water purifier according to claim 7, characterized in that: The desktop water purifier also includes a controller, which is used to control the water inlet control valve to open when the water level is lower than or equal to the lower water level limit, and to control the water inlet control valve to close when the water level is higher than or equal to the upper water level limit.

9. The tabletop water purifier according to claim 7, characterized in that: The tabletop water purifier further includes a second one-way valve provided on the water inlet pipe, and the second one-way valve can conduct water in a one-way manner along a direction from the tap water inlet to the raw water inlet of the water purification component.

10. The tabletop water purifier according to claim 7, characterized in that: The height of the tap water outlet is not lower than the top of the raw water tank.

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