Water purifying and drinking machine

Abstract

The utility model provides a water purifying and drinking machine which is provided with a water taking opening and comprises a tap water opening, a raw water tank, a water inlet control valve, a water purifying assembly, a water discharging opening and a water level detection assembly, the raw water tank comprises a water tank water passing opening, a water inlet of the water inlet control valve is communicated to the tap water opening, and a water outlet of the water inlet control valve is communicated to the water tank water passing opening. The water purification assembly comprises a raw water inlet, a purified water outlet and a concentrated water outlet, the raw water inlet is communicated to the water tank water passing opening, and the purified water outlet is communicated to the water taking opening; the water level detection assembly is used for detecting the water level in the raw water tank, and the water inlet control valve is closed when the water level is higher than or equal to the upper limit of the water level. When a large amount of water is taken, the tap water pipe can supplement tap water into the raw water tank while water in the raw water tank is used, and the requirements of users can be generally met. And when the water is cut off, the water in the raw water tank is filtered and then supplied to users. And when the tap water is recovered, the raw water tank can be automatically filled.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification, and particularly to a water purifier for drinking water. Background Art

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

[0003] At present, water purifiers for drinking water on the market can generally be divided into two types: household and commercial. The water intake of commercial water purifiers for drinking water may be very large, and when using common two-way or three-way water pipes for water supply, water supply shortage may occur. For household water purifiers for drinking water, in areas where the water source supply is unstable, occasional water cut-off may occur.

[0004] At present, water purifiers for drinking water that can be connected to tap water on the market may, in the case of unstable water sources, provide purified water intermittently, with the flow rate fluctuating greatly, or even be completely unable to provide purified water, resulting in poor user experience. Summary of the Utility Model

[0005] In order to at least partially solve the problems existing in the prior art, some embodiments of the utility model provide a water purifier for drinking water, which has a water intake. The water purifier includes: a tap water port; a raw water tank, the raw water tank including a water inlet of the tank; an inlet control valve, the water inlet of the inlet control valve is connected to the tap water port through a water inlet pipeline, and the water outlet of the inlet control valve is connected to the water inlet of the tank; a water purification component, the water purification component including a raw water inlet, a purified water outlet and a concentrated water outlet, the raw water inlet is connected to the water inlet of the tank, and the purified water outlet is connected to the water intake; a drain port, the drain port is connected to the outside, and the concentrated water outlet is connected to the drain port through a first concentrated water pipeline; and a water level detection component, the water level detection component is used to detect the water level in the raw water tank, and the inlet control valve closes when the water level is higher than or equal to the upper water level limit.

[0006] In the case where the water purifier for drinking water is of commercial type, a large-flux reverse osmosis filter element can be used. When taking a large amount of water, the raw water tank can first provide the water source. Only when the water in the raw water tank is exhausted, will the situation of only being supplied with tap water occur. While using the water in the raw water tank, the tap water pipe will also supplement tap water into the raw water tank, so it can generally meet the user's needs. In the case where the water purifier for drinking water is for household use, either a large-flux reverse osmosis filter element or a small-flux reverse osmosis filter element can be used. When a water cut-off occurs, the water pre-stored in the raw water tank can be filtered and supplied to users. When the tap water resumes, the raw water tank can be automatically filled up again.

[0007] Exemplarily, the raw water tank is detachable, and the raw water tank is configured to be injected with raw water in a detached state, and the water tank water inlet is connected to the raw water inlet when the raw water tank is in an installed state. The detachable raw water tank can be convenient for the user to carry it to the location of the water source, such as the location of the tap. For easy transportation, a handle or other structure can also be provided on the upper part of the raw water tank. The handle provided on the upper part will not hinder the injection of raw water at the water inlet provided below. The raw water tank can be installed on the water purifier after a sufficient amount of raw water is injected, and the water tank water inlet is connected to the raw water inlet when the raw water tank is in an installed state, thereby providing raw water to the water purification component.

[0008] Exemplarily, the raw water tank further includes a concentrated water inlet of the water tank, which is connected to the concentrated water outlet of the water purification component through the second concentrated water pipeline when the raw water tank is in the installed state; the water purifier further includes a valve assembly, which 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. It is easy to understand that if the valve assembly is not provided, the raw water in the raw water tank may enter the first concentrated water pipeline through the second concentrated water pipeline when the first concentrated water pipeline is connected, and flow out from the drain. The valve assembly can only allow the concentrated water to flow out of the drain to prevent the raw water from leaking from the drain.

[0009] For example, the first concentrated water pipeline can be cut off. By cutting off the first concentrated water pipeline, the water purifier can switch from discharging concentrated water through the drain port to returning concentrated water to the raw water tank, which can be applied to various application scenarios. The models and types of water purifiers can be standardized and changed according to the user's usage environment.

[0010] Exemplarily, the water purifier further comprises: a plugging member for opening or closing the drain outlet, and the first concentrated water pipeline is cut off when the plugging member closes the drain outlet. In this way, the concentrated water discharge mode of the water purifier can be switched at a low cost without control.

[0011] For example, the water purifier further includes: a first concentrated water solenoid valve disposed on the first concentrated water pipeline, and the first concentrated water pipeline is cut off when the first concentrated water solenoid valve is closed. In this way, the user does not need to block the drain outlet with a plug or a cover, and there will be no problem of losing the blocking piece, and there will be no problem of tying the blocking piece to the water purifier with a rope to affect the appearance.

[0012] Exemplarily, the valve assembly includes one or more of the following: a first check valve disposed on the second concentrated water pipeline, the first check valve being configured to be unidirectionally conductive along a direction opposite to a predetermined direction; a second concentrated water solenoid valve disposed on the second concentrated water pipeline; and a switching valve including a valve water inlet, a first valve water outlet, and a second valve water outlet, the valve water inlet being communicated with the concentrated water outlet of the water purification assembly, the first valve water outlet being communicated with the water inlet of the second concentrated water pipeline, and the second valve water outlet being communicated with the water inlet of the first concentrated water pipeline. By controlling the switching valve, it is possible to control the discharge of the concentrated water to the drain port or control the return of the concentrated water into the original water tank, and at this time, there is no need to provide a blocking member or a first concentrated water solenoid valve.

[0013] Exemplarily, the water dispenser includes: a water quality detection assembly for detecting the water quality in the original water tank; a prompting device; and a controller for controlling the prompting device to send a prompt message when the water quality does not meet the standard. Thereby, the service life of the filter element can be extended when the water dispenser uses a water source with relatively poor water quality.

[0014] Exemplarily, the original water tank is non-removable. In this way, the original water tank can be protected by the housing.

[0015] Exemplarily, the water dispenser includes: a water level detection assembly for detecting the water level in the original water tank; a prompting device; and a controller for controlling the prompting device to send a prompt message when the water level is lower than or equal to the lower water level limit. The prompting device can timely remind the user to replace the water in the original water tank to ensure sufficient water source for the water dispenser.

[0016] Exemplarily, the water dispenser further includes: a tap water port; an inlet control valve, the water inlet of the inlet control valve being communicated with the tap water port through a water inlet pipeline, and the water outlet of the inlet control valve being communicated with the water inlet of the water tank; and a water level detection assembly for detecting the water level in the original water tank; the inlet control valve is closed when the water level is higher than or equal to the upper water level limit. Thereby, it is possible to achieve low-cost control of the replenishment of the original water tank through a simple structure. Due to the existence of the original water tank, in the event of a water supply interruption, the water dispenser can still provide the purified water required by the user for a period of time through the original water stored in the original water tank.

[0017] Exemplarily, the water dispenser further includes a second check valve disposed on the water inlet pipeline, the second check valve being unidirectionally conductive along the direction from the tap water port to the raw water inlet of the water purification assembly. Even if the height of the tap water port is lower than the liquid level in the original water tank, the original water in the original water tank will not flow out from the tap water port.

[0018] Exemplarily, the height of the tap water port is not lower than the top of the original water tank. Even if the tap water port may not be closed, the original water in the original water tank will not flow out from the tap water port.

[0019] A series of simplified concepts are introduced in the utility model content, which will be further described in detail in the specific implementation part. The utility model content part does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the protection scope of the claimed technical solution.

[0020] The following will, with reference to the accompanying drawings, detail the advantages and features of the present utility model. Brief Description of the Drawings

[0021] The following drawings of the present utility model are hereby part of the present utility model for understanding the present utility model. The embodiments of the present utility model and their descriptions are shown in the drawings to explain the principles of the present utility model. In the drawings,

[0022] Figure 1 is a water circuit diagram of a water purifier according to a first exemplary embodiment of the present utility model;

[0023] Figure 2 is a water circuit diagram of a water purifier according to a second exemplary embodiment of the present utility model;

[0024] Figure 3 is a water circuit diagram of a water purifier according to a third exemplary embodiment of the present utility model;

[0025] Figure 4 is a water circuit diagram of a water purifier according to a fourth exemplary embodiment of the present utility model.

[0026] Among them, the above-mentioned drawings include the following reference numerals:

[0027] 10, water intake; 20, water outlet nozzle; 30, clean water circuit; 31, clean water tank; 32, water pump; 40, cold tank; 50, ice making component; 60, heating component; 70, drain outlet; 80, tap water inlet; 100, raw water tank; 101, water tank water passing port; 102, water tank concentrated water inlet; 103, lower water level limit; 104, upper water level limit; 200, water purification component; 201, raw water inlet; 202, clean water outlet; 203, concentrated water outlet; 210, filter element; 220, booster pump; 230, concentrated water ratio 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, inlet control valve; 600, water inlet pipeline; 601, second one-way valve. Detailed Description of the Specific Embodiment

[0028] In the following description, numerous details are provided to enable a thorough understanding of the present utility model. However, those skilled in the art will appreciate that the following description merely exemplarily shows the preferred embodiments of the present utility model, and the present utility model can be implemented without one or more such details. In addition, to avoid confusion with the present utility model, some technical features well-known in the art are not described in detail.

[0029] To thoroughly understand the embodiments of the present utility model, detailed structures will be presented in the following description. Obviously, the implementation of the embodiments of the present utility model is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the present utility model are described in detail below. However, in addition to these detailed descriptions, the present utility model can also have other embodiments.

[0030] An embodiment of the present utility model provides a water purifier. The following will introduce the water purifier according to the embodiments of the present utility model in detail with reference to the accompanying drawings.

[0031] As Figure 1 shown, the water purifier may have a water intake port 10, and the water intake port 10 may be formed by a water outlet nozzle 20 or a faucet etc. provided on the water purifier. The water purifier may include a tap water port 80 and a raw water tank 100. The tap water port 80 may be connected to the municipal water supply network, the user's faucet, etc. through a pipeline to obtain tap water. The raw water tank 100 is used to store raw water. Usually, the raw water is tap water from the above-mentioned tap water port 80. The water purifier may further include a water purification component 200, and the water purification component 200 includes a raw water inlet 201 and a purified water outlet 202. The water purification component 200 can filter the raw water entering the raw water inlet 201 and provide purified water from the purified water outlet 202. Exemplarily, the raw water tank 100 may be detachable, and the user can detach it and replenish raw water into it. In this case, the raw water tank 100 may include a filling port (not shown), and the user can replenish raw water into the raw water tank 100 through the filling port. The raw water may include, but is not limited to, bottled water, well water or tap water.

[0032] Exemplarily, the raw water tank may also be non-removable. Taking the commercial water purifier as an example, its raw water tank is usually non-removable and can be embedded inside the water purifier. In this way, the raw water tank can be protected by the housing. The raw water tank 100 may include a water tank water inlet 101, and the water tank water inlet 101 may communicate with the raw water inlet 201 to provide raw water for the water purification component 200. In some embodiments below, the water tank water inlet 101 may also be used to receive raw water. The water tank water inlet 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 water tank water inlet 101. In an embodiment not shown, the water tank water inlet may be provided at the upper part of the raw water tank, and raw water can be extracted from the raw water tank through a pipe inserted into the raw water tank from the water tank water inlet. Additionally, optionally, the water tank water inlet may include a first water tank water inlet and a second water tank water inlet. The first water tank water inlet may be connected to the raw water inlet 201 of the water purification component 200, and the second water tank water inlet may receive raw water.

[0033] Continuing to refer to Figure 1 , the water purification component 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, and other filter elements, as well as a composite filter element composed of one or more of these filter elements. Taking the filter element 210 including a reverse osmosis filter element as an example, the pore diameter of the reverse osmosis filter element is five millionths of a hair (0.1 nanometers), and bacteria and viruses that are generally invisible to the naked eye are 10 times that size. Therefore, only water molecules and some mineral ions beneficial to the human body can pass through, and other impurities and heavy metals are discharged from the concentrated water outlet, providing high-quality purified water for users. For nanofiltration filter elements and reverse osmosis filter elements, appropriate pressure is required during their operation. Therefore, the water purification component 200 may further include a booster pump 220. Nanofiltration filter elements and reverse osmosis filter elements also produce a certain proportion of concentrated water during operation. Therefore, the water purification component 200 including one of them or both of them is also provided with a concentrated water outlet 203. The concentrated water outlet 203 communicates with the concentrated water port of the filter element 210 through a concentrated water proportion valve 230. When the concentrated water proportion valve 230 is in the closed state, the pressure required for the normal operation of the filter element 210 can be maintained. When the concentrated water proportion valve 230 is in the open state, raw water can quickly pass through the filter element 210 and the concentrated water proportion 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 high-quality purified water for users.

[0034] Since the raw water in the raw water tank 100 has little pressure, the booster pump 220 can also extract the raw water from the raw water tank 100 and pressurize it to increase the output flow rate of the purified water. The purified water outlet 202 can be connected to the water intake 10 to provide purified water to the user. The filter element 210 may adopt a large-flux reverse osmosis filter element or a small-flux reverse osmosis filter element. The daily water production of the large-flux reverse osmosis filter element is not less than 400 gallons. When the filter element 210 adopts a small-flux reverse osmosis filter element, a purified water tank 31 and a water pump 32 can also be provided 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 does not draw water, preventing the water flow from being small when the user draws water and affecting the user experience. For Figure 1 In the specific embodiment shown, the purified water tank 31 and / or the purified water outlet 202 can also be connected to the cold tank 40, the ice-making assembly 50, the heating assembly 60, etc. through pipelines, and can respectively produce cold water, ice cubes and hot water to meet the diverse needs of users. The water purifier can include a drain port 70, and the drain port 70 can communicate with the outside. The concentrated water outlet 203 is connected to the drain port 70 through a first concentrated water pipeline 300. Specifically, for example, the drain port 70 can be connected to a drain pipe, and the drain pipe can be connected to a sewer or a container for receiving concentrated water. The user can use the concentrated water in the container for various purposes when needed.

[0035] The water purifier can include a water inlet control valve 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 of the water inlet control valve 500 is connected to the tap water port 80 through a water inlet pipeline 600. The water outlet of the water inlet control valve 500 is connected to the water tank water inlet 101. When the water purifier is connected to tap water, the raw water tank 100 can be filled with tap water when the water level in the raw water tank 100 is low. The water purifier can also include a water level detection component, and the water level detection component can be used to detect the water level in the raw water tank 100. For the above water purifier with a tap water port 80, the raw water tank 100 can be non-removable, and the concentrated water is directly discharged to the outside through the drain port 70 and will not enter the raw water tank 100. Exemplarily, the water inlet control valve 500 can be a mechanical valve such as a float valve, and the water level detection component can be a float connected to the float valve. When the water level detection component detects that the water level is higher than or equal to the water level upper limit 104, the water inlet control valve 500 closes. Thus, the replenishment of the raw water tank 100 can be controlled at low cost through a simple structure.

[0036] In the above technical solution, as described above, when the water purifier is of a commercial type, the filter element 210 can adopt a large-flux reverse osmosis filter element. When taking a large amount of water, the raw water tank can first provide the water source. Only when the water in the raw water tank is exhausted will there be a situation where only the water supply pipe supplies water. While using the water in the raw water tank, the water supply pipe will also replenish tap water into the raw water tank 100, so generally the user's needs can be met. When the water purifier is for household use, the filter element 210 can adopt either a large-flux reverse osmosis filter element or a small-flux reverse osmosis filter element. When a water outage occurs, the water pre-stored in the raw water tank can be filtered and supplied to the user. When the tap water resumes, the raw water tank can be automatically filled up again.

[0037] As Figure 2 shown, exemplarily, the water purifier may further include a second one-way valve 601 provided on the water inlet pipeline 600. The second one-way valve 601 can conduct unidirectionally along the direction from the tap water port 80 to the raw water inlet 201 of the water purification assembly. It is easy to understand that since the tap water port 80 may be set at any suitable position of the water purifier, if there is no water source here, the tap water port 80 may not be closed. The user uses the raw water tank 100 to supply water. By providing the second one-way valve 601, even if the height of the tap water port 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 from the tap water port 80. In some other embodiments, the height of the tap water port 80 is not lower than the top of the raw water tank 100. In this way, even if the tap water port 80 may not be closed, the raw water in the raw water tank 100 will not flow out from the tap water port 80.

[0038] Exemplarily, the 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 can include one or more of any suitable sensors such as an infrared water level gauge, a float water level gauge, an ultrasonic water level gauge, etc. The prompting device can include any prompting method such as a sound prompt, a light prompt, a text message, or an APP prompt to send a prompt message to the user.

[0039] The controller can be built using electronic components such as timers, comparators, registers, digital logic circuits, etc., or implemented using processor chips such as single-chip microcontrollers, microprocessors, programmable logic controllers (PLCs), digital signal processors (DSPs), field-programmable gate arrays (FPGAs), programmable logic arrays (PLAs), application-specific integrated circuits (ASICs), and their peripheral circuits. The controller is used to control the prompting device to send a prompt message when the water level in the original water tank 100 is lower than the lower water level limit 103. In the case where the tap water at the tap water inlet is interrupted or not connected, the water purifier can use only the original water tank 100 as the water source. At this time, when the water level in the original water tank 100 is lower than the lower water level limit 103, the user needs to manually supplement the original water in the original water tank 100. In this case, the prompting device can prompt the user to supplement the original water. For commercial water purifiers, for example, the original water tank 100 may be set inside the machine body, and the water level may be invisible. The prompting device can prompt the user that the water source is interrupted to avoid meaningless waiting by the user.

[0040] The following specific embodiments may be directed to household water purifiers. Exemplarily, the original water tank 100 is detachable, and the original water tank 100 is configured to be filled with original water in the detached state. The filling port of the original water tank 100 can be the same opening as the water tank water passing port 101, thereby reducing the number of openings on the original water tank 100 and making the structure more concise. Of course, the filling port and the water tank water passing port 101 can also be different openings. Exemplarily but not limitatively, both the filling port and the water tank water passing port 101 can be provided below the original water tank 100. The filling port can have a larger opening and a lid, so as to facilitate the user to inject the original water and prevent the original water from spilling out. Optionally, the filling port can be provided at the bottom of the original water tank 100. This can make the upper part of the original water tank 100 more concise and improve the user experience. The detachable original water tank 100 can facilitate the user to carry it to the location of the water source, such as the location of the tap water faucet. For easy carrying, a handle or other structure can also be provided on the upper part of the original water tank 100. The handle provided on the upper part will not prevent the filling port provided below from injecting the original water. The original water tank 100 can be installed on the water purifier after being filled with sufficient original water. The water tank water passing port 101 is connected to the original water inlet 201 when the original water tank 100 is in the installed state, so as to provide the original water to the water purification component 200. The water tank water passing port 101 can be provided with a water stop valve (not shown). When the original water tank 100 is in the detached state, the original water cannot flow out through the water stop valve, and when the original water tank 100 is in the installed state, the original water can reach the original water inlet 201 connected to the water tank water passing port 101.

[0041] Exemplarily, such as Figure 3As shown, the raw water tank 100 may also include a water tank concentrated water inlet 102, which is connected to the concentrated water outlet 203 of the water purification assembly 200 through the second concentrated water pipeline 400 when the raw water tank 100 is in the installed state. In some application scenarios, it may be inconvenient for the water purifier to discharge concentrated water to the outside of the water purifier through the drain port 70, for example, the water purifier may be placed in a bedroom or office. In this case, the concentrated water can be discharged to the raw water tank 100 through the second concentrated water pipeline 400. In some specific embodiments, a partition may be provided in the raw water tank 100, and the partition may partially separate the water tank concentrated water inlet 102 and the water tank water outlet 101, so as to reduce the proportion of concentrated water mixed into the raw water or avoid the mixing of concentrated water and raw water. In order to make the water purifier compatible with different usage scenarios, the water purifier may further include a valve assembly, which is used to control the second concentrated water pipeline 400 to be cut off at least along a predetermined direction when the first concentrated water pipeline 300 is connected, and the predetermined direction is the direction from the concentrated water inlet 102 of the water tank to the concentrated water outlet 203 of the water purification assembly 200. Specifically, when the first concentrated water pipeline 300 is connected, the second concentrated water pipeline 400 can be divided into two situations: 1) unidirectional conduction in the direction opposite to the predetermined direction, and the concentrated water can enter the raw water tank 100 along the second concentrated water pipeline 400; 2) the second concentrated water pipeline 400 is cut off in two directions. It is easy to understand that if the valve assembly is not provided, the raw water in the raw water tank 100 may enter the first concentrated water pipeline 300 through the second concentrated water pipeline 400 when the first concentrated water pipeline 300 is connected, and flow out from the drain 70. The valve assembly can only allow the concentrated water to flow out from the drain 70 to prevent the raw water from leaking from the drain 70.

[0042] As described above, when the tap water at the water outlet is interrupted or not connected, the water purifier can only use the raw water tank 100 as the water source. At this time, the water level in the raw water tank 100 will gradually drop. When 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 and then replenish sufficient raw water. At this time, the prompt device can also promptly remind the user to replace the water in the raw water tank 100, or remind the user that the water source is interrupted and purified water cannot be provided. It should be noted that when the concentrated water outlet 203 of the water purification component 200 is only connected to the first concentrated water pipeline 300, since the concentrated water generated during the water production process of the water purification component 200 does not need to flow back to the raw water tank 100, the lower limit 103 of the water level can be set lower, and can even be the water level when the raw water tank 100 is emptied. When the concentrate outlet 203 of the water purification component 200 is connected to the first concentrate pipeline 300 and the second concentrate pipeline 400, since the concentrate produced during the water production process of the water purification component 200 may flow back to the raw water tank 100, the lower water level limit 103 can be set higher, for example, the water level of the concentrate that can be produced when all the raw water in the full raw water tank 100 is consumed.

[0043] When the tap water inlet 80 is connected to the tap water, the water level in the raw water tank will be filled up once it drops, so the water level lower limit 103 will not be reached. If the concentrated water flows back to the raw water tank, the user may not empty the concentrated water in the raw water tank. In this case, the concentrated water may accumulate in the raw water tank, resulting in a higher and higher concentration of the raw water. In this regard, the water purifier can remind the user to empty the raw water tank 100 through the water quality detection component mentioned below, or the timing function. When the concentrated water is discharged through the drain outlet 70, there is no need to empty the raw water tank 100.

[0044] Exemplarily, the first concentrate water pipeline 300 can be cut off. Normally, when the first concentrate water pipeline 300 is turned on, the concentrate water will hardly generate pressure in the second concentrate water pipeline 400. Therefore, almost all the concentrate water flows out from the drain port 70 and will not enter the raw water tank 100. When the first concentrate water pipeline 300 is cut off, no concentrate water will flow out of the drain port 70, and the pressure of the concentrate water can at least overcome the pressure of the raw water in the raw water tank 100 and enter the raw water tank 100. In the case where the water purifier is provided with a valve assembly, the concentrate water can overcome the resistance of the valve assembly and the pressure of the raw water in the raw water tank 100, and then enter the raw water tank 100. In short, by cutting off the first concentrate water pipeline 300, the water purifier can switch from discharging concentrate water through the drain port 70 to returning concentrate water to the raw water tank 100, which can be applied to various application scenarios, and the models and types of water purifiers can be standardized and changed 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 add new raw water.

[0045] 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 water purifier may also include a plug (not shown) for opening or closing the drain port, and the first concentrated water pipeline 300 is cut off when the plug closes the drain port. The plug may include a plug or a cover, which may be retained at the drain port 70 by threads or friction, thereby preventing the concentrated water from flowing out of the drain port 70. In this case, the valve assembly may be configured to open automatically under water pressure, so that the switching of the concentrated water discharge mode of the 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 or other structure arranged at the drain port.

[0046] Exemplarily, the water purifier may further include a first concentrated water solenoid valve 310 disposed on the first concentrated water pipeline 300, and the first concentrated water pipeline 300 is cut off when the first concentrated water solenoid valve 310 is closed. By providing the first concentrated water solenoid valve 310, the water purifier can, in response to the user's operation, prevent the concentrated water from flowing out of the drain port 70 through the first concentrated water solenoid valve 310 and cause the concentrated water to flow back to the original water tank 100. In this way, the user does not need to block the drain port 70 with a plug or a cover, there will be no problem of loss of the blocking member, and there will be no problem of affecting the aesthetics by tying the blocking member to the water purifier with a rope. When the water purifier is provided with the first concentrated water solenoid valve 310, the valve assembly can be configured to automatically open under water pressure, or can be controlled to open and close and is exactly opposite to the opening and closing of the first concentrated water solenoid valve 310.

[0047] The valve assembly may include one or more of the following. In Figure 3 the exemplary embodiment shown, the valve assembly may include a first check valve 410. The first check valve 410 may be disposed on the second concentrated water pipeline 400, and the first check valve 410 is configured to be unidirectionally conductive along a direction opposite to the aforementioned predetermined direction. That is, the first check valve 410 can be unidirectionally conductive along the direction from the concentrated water outlet 203 of the water purification assembly 200 to the concentrated water inlet 102 of the water tank. The first check valve 410 can be automatically opened under water pressure without control, and can prevent the raw water in the original water tank 100 from leaking out of the drain port 70 when the first concentrated water pipeline 300 is conductive. When the valve assembly only includes the first check valve 410, the first concentrated water pipeline 300 can be cut off by a blocking member or can be cut off by the first concentrated water solenoid valve 310.

[0048] Taking the first check valve 410 as a diaphragm check valve as an example, the concentrated water in the second concentrated water pipeline only needs to overcome the pressure of the water in the original water tank 100 almost only in the conduction direction of the first check valve 410 and can pass through with a very small pressure. The first concentrated water pipeline 300 may deposit scale during long-term use, resulting in a further increase in the pressure in the first concentrated water pipeline 300 and the part of the second concentrated water pipeline 400 directly connected to the first concentrated water pipeline 300. Therefore, part of the concentrated water may be discharged from the drain port 70 through the first concentrated water pipeline 300, and at the same time, another part returns to the original water tank 100 under the action of pressure. Exemplarily, the first check valve 410 can be configured to have a relatively large opening pressure, and only when most or even all of the drain port 70 is closed, the water pressure of the concentrated water can cause the first check valve 410 to open. In this way, when the first concentrated water pipeline 300 is normally conductive, the first check valve 410 completely cuts off the second concentrated water pipeline 400 from two directions, which can prevent the concentrated water from entering the original water tank 100 and only discharge it through the drain port 70, and the user does not need to pour out the concentrated water in the original water tank 100.

[0049] InFigure 4 In the exemplary embodiment shown, the valve assembly may include a second concentrated water solenoid valve 420. The second concentrated water solenoid valve 420 may be disposed on the second concentrated water pipeline 400. The second concentrated water solenoid valve 420 may be closed when the first concentrated water pipeline 300 is conducting, thereby preventing the raw water in the raw water tank 100 from leaking through the second concentrated water pipeline 400. The second concentrated water solenoid valve 420 may also be opened when the first concentrated water pipeline 300 is cut off, so that the concentrated water can enter the raw water tank 100 through the second concentrated water pipeline 400. In this case, the first concentrated water pipeline 300 preferably uses a first concentrated water solenoid valve 310 to achieve cutoff, and the first concentrated water solenoid valve 310 and the second concentrated water solenoid valve 420 do not simultaneously open or simultaneously close. Of course, this application does not exclude embodiments in which the opening and closing of the second concentrated water solenoid valve 420 are controlled by detecting the water pressure in the pipeline or according to the blocking condition of the drain port 70.

[0050] In yet another exemplary embodiment, the valve assembly may include a switching valve (not shown). The switching valve may include a valve water inlet, a first valve water outlet, and a second valve water outlet. The valve water inlet may be connected to the concentrated water outlet 203 of the water purification assembly 200. The first valve water outlet may be connected to the water inlet of the first concentrated water pipeline 300. The second valve water outlet may be connected to the water inlet of the second concentrated water pipeline 400. By controlling the switching valve, the concentrated water can be discharged to the drain port 70 or the concentrated water can be controlled to flow back into the raw water tank 100. In this case, there is no need to provide a blocking member or a first concentrated water solenoid valve 310. Of course, this application does not exclude embodiments in which one or more of the above types of valve assemblies are combined with each other.

[0051] Exemplarily, the water purifier may further include a water quality detection component for detecting the water quality in the raw water tank 100. Specifically, the water quality detection component may use a total dissolved solids (TDS) detector for detection. In the case where the 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 a decline in the quality of the provided purified water. By providing the water quality detection component, the controller can timely determine whether the water quality is too poor. And when the water quality does not meet the standard, the control prompt device issues 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 water level of the raw water in the raw water tank 100 is lower than the water level lower limit 103. To improve the accuracy of detection, the detection part of the water quality detection component, such as the TDS probe, may be disposed at the water tank water passing port 101 or on the pipeline connecting the water tank water passing port 101 and the raw water inlet 201, so that it will not be interfered by the concentrated water just discharged into the raw water tank 100. Thereby, the service life of the filter element 210 can be extended when the water purifier uses a water source with poor water quality.

[0052] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by orientation terms such as "front", "rear", "upper", "lower", "left", "right", "lateral", "vertical", "perpendicular", "horizontal", "top", "bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description. Without contrary description, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present utility model; the orientation terms "inner" and "outer" refer to the inside and outside relative to the contour of each component itself.

[0053] For the convenience of description, regional relative terms such as "above...", "over...", "on the upper surface of...", "upper...", etc. can be used here to describe the regional positional relationship between one or more components or features shown in the drawings and other components or features. It should be understood that the regional relative terms not only include the orientation of the components described in the drawings, but also different orientations during use or operation. For example, if the components in the drawings are inverted as a whole, then the component "above other components or features" or "over other components or features" will include the situation where the component is "below other components or structures" or "under other components or structures". Thus, the exemplary term "above..." can include both the orientation of "above..." and "below...". In addition, these components or features can also be positioned at other different angles (such as rotated 90 degrees or other angles), and this article is intended to cover all such situations.

[0054] It should be noted that the terms used here are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used here, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, components, assemblies, and / or combinations thereof.

[0055] It should be noted that the terms "first", "second", etc. in the description, claims, and above-mentioned drawings of the present application are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here.

[0056] The present utility model has been described through the above embodiments. However, it should be understood that the above embodiments are only for illustrative and explanatory purposes, and are not intended to limit the present utility model to the scope of the described embodiments. In addition, those skilled in the art can understand that the present utility model is not limited to the above embodiments, and more variations and modifications can be made according to the teachings of the present utility model, and these variations and modifications all fall within the scope of protection required by the present utility model. The scope of protection of the present utility model is defined by the appended claims and their equivalent scope.

Claims

1. A water purifier with a water intake port, characterized in that, The water purifier comprises: Water outlet; A raw water tank, the raw water tank comprising a water tank water inlet; A water inlet control valve, wherein the water inlet of the water inlet control valve is connected to the tap water port 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; A water purification component, the water purification component comprising a raw water inlet, a purified water outlet and a concentrated water outlet, the raw water inlet is connected to the water tank water inlet, and the purified water outlet is connected to the water intake; a drain port, the drain port being connected to the outside, the concentrated water outlet being connected to the drain port through a first concentrated water pipeline; and A water level detection component is used to detect the water level in the raw water tank, and the water inlet control valve is closed when the water level is higher than or equal to the water level upper limit.

2. The water purifier according to claim 1, wherein The raw water tank is detachable, and is configured to be injected with raw water in a detached state. The water tank water inlet is connected to the raw water inlet when the raw water tank is in an installed state.

3. The water purifier according to claim 2, characterized in that: The raw water tank further comprises a water tank concentrated water inlet, and the water tank concentrated water inlet is connected to the concentrated water outlet of the water purification component through a second concentrated water pipeline when the raw water tank is in the installed state; The water purifier further includes a valve assembly, which 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 assembly.

4. The water purifier according to claim 3, wherein, The first concentrated water pipeline can be blocked.

5. The water purifier according to claim 4, characterized in that, The 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 arranged on the first concentrated water pipeline, and the first concentrated water pipeline is cut off when the first concentrated water solenoid valve is closed.

6. The water purifier according to claim 3, wherein, The valve assembly includes one or more of the following: a first one-way valve, the first one-way valve being arranged on the second concentrated water pipeline, the first one-way valve being configured to be unidirectionally conductive in a direction opposite to the predetermined direction; a second concentrated water solenoid valve, wherein the second concentrated water solenoid valve is arranged on the second concentrated water pipeline; as well as A switching valve, the 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 component, the first valve water outlet being connected to the water inlet of the second concentrated water pipeline, and the second valve water outlet being connected to the water inlet of the first concentrated water pipeline.

7. The water purifier according to claim 3, wherein The 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; a reminder device; and A controller is used to control the prompt device to send a prompt message when the water quality does not meet the standard.

8. The water purifier according to claim 1, wherein The raw water tank is not removable.

9. The water purifier according to any one of claims 1-8, characterized in that, The water purifier comprises: a reminder device; and A controller is used to control the prompt device to send out a prompt message when the water level is lower than or equal to the lower limit of the water level.

10. The water purifier according to any one of claims 1 to 8, characterized in that: The water purifier further includes a second one-way valve provided on the water inlet pipeline, and the second one-way valve can be unidirectionally conducted along the direction from the tap water port to the raw water inlet of the water purification assembly; and / or The height of the tap water port is not lower than the top of the raw water tank.

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