CN223087649U - Water Purifier - Google Patents

Abstract

The utility model provides a water purifier which is provided with a tap water port, a water intake port, a water outlet, a filtering component and a water inlet control valve, wherein the filtering component comprises a raw water inlet, a purified water outlet and a concentrated water outlet, the raw water inlet is communicated to the tap water port through a raw water pipeline, the water pressure of the raw water inlet is not greater than that of the tap water port, the concentrated water outlet is communicated with the water outlet, the water outlet is communicated with the outside, a water purifying tank, a water inlet of the water purifying tank is communicated to the purified water outlet, a water outlet of the water purifying tank is communicated to the water intake port, the water level detection component is used for detecting the water level in the water purifying tank, and the water inlet control valve is arranged on the raw water pipeline and is closed when the water level is greater than or equal to the upper limit of the water level. By canceling the booster pump, the water is prepared only by the water pressure of tap water, and the noise generated when the water is purified by the water purifying mechanism can be greatly reduced.

Description

Water purifier

Technical Field

The utility model relates to the technical field of water purification, in particular to a water purifier.

Background

With the development of the age, the water purifier is already approved and purchased by most people, and can meet the higher requirements of users on water quality.

Throughout the market environment, the flux demand for reverse osmosis water purifiers is presenting an increasing situation. The reverse osmosis water purifier filters by means of a reverse osmosis membrane, and the normal operation of the reverse osmosis membrane requires a certain pressure. Tap water is generally insufficient in pressure to meet the rated operating pressure requirement of a reverse osmosis membrane, so that water purifiers on the market are generally equipped with booster pumps to increase the pressure of water.

Noise generated by the booster pump during working becomes a main source of noise of the water purifier, is also a big problem of complaint of users, causes interference to daily work and life of the users, and becomes key how to reduce the noise.

Disclosure of utility model

In order to at least partially solve the problems of the prior art, some embodiments of the present utility model provide a water purifier. The water purifier comprises a water inlet, a water intake and a water outlet, wherein the water purifier comprises a filtering component, the filtering component comprises a raw water inlet, a purified water outlet and a concentrated water outlet, the raw water inlet is communicated to the water inlet through a raw water pipeline, the water pressure of the raw water inlet is not greater than that of the water inlet, the concentrated water outlet is communicated with the water outlet, the water outlet is communicated with the outside, a water purifying tank, a water inlet of the water purifying tank is communicated to the purified water outlet, a water outlet of the water purifying tank is communicated to the water intake, a water level detection component is used for detecting the water level in the water purifying tank, and a water inlet control valve is arranged on the raw water pipeline and is closed when the water level is greater than or equal to the upper limit of the water level. In the technical scheme, the user can store or discard the concentrated water by himself through the water outlet, so that the choice of the user is increased. The user can reuse the collected concentrated water to save water. By canceling the booster pump, the water is prepared only by the water pressure of tap water, and the noise generated by the water purifier can be greatly reduced. Since the water pressure of tap water generally does not reach the rated working pressure of the filter assembly, the filtering efficiency of the filter assembly is lower than that of the filter assembly in normal operation, and therefore, the clean water tank is arranged to store the clean water output by the filter assembly. When the water level of the water purifying tank is reduced, the water inlet control valve is started to enable tap water to enter the filtering component to produce water. This will generally ensure that there is sufficient clean water in the clean water tank when the user is taking water. When the water level of the clean water tank reaches the upper limit, the raw water pipeline is cut off, so that the clean water can be prevented from overflowing. In summary, the water purifier can rapidly provide a large amount of purified water to a user, and slowly supplement water to the purified water tank with very low noise until the purified water tank is full after the user takes water.

The water purifier further comprises a first pipeline and a pumping assembly, wherein the water inlet of the first pipeline is communicated with the water outlet of the water purifying tank, the water outlet of the first pipeline is communicated with the water intake, and the pumping assembly comprises a first pump arranged on the first pipeline. When a user takes water, the first pump can pump out purified water stored in the purified water tank and pump the purified water to the water intake. This allows the user to be provided with clean water at a greater flow rate. And even if the water intake of the water purifier is higher than the water purifying tank, the purified water can still be pumped to the water intake through the first pump. In some embodiments, the first pump may also be used to regulate the output flow of purified water.

The water purifier further comprises a heating component, wherein the heating component is arranged on the first pipeline in series and is positioned at the downstream of the first pump, and the first pump is a flow control pump. The flow control pump is matched with the heating component, and the water temperature of the output water flow can be accurately controlled by changing the water flow size and the heating power. Specifically, for example, when the temperature of the hot water output by the water purifier is higher, the pumping flow of the flow control pump can be properly reduced because the heating power of the heating component is limited, so that the temperature of the output hot water meets the requirement.

The water purifier further comprises an input assembly and a controller, wherein the input assembly is used for receiving water taking operation of a user and generating water taking information, and the controller is used for controlling pumping flow of the first pump and heating power of the heating assembly based on the water taking information. The input assembly is used for receiving water taking operation of a user and generating water taking information. The controller can control the flow control pump to change the flow based on the water intake information, or control the heating power of the heating component based on the water intake information, or control the working time of the flow control pump based on the water intake information, and then control the water quantity of purified water, and can also control one or more of the above. This provides the user with purified water in a desired state including a desired amount of water, a desired flow rate, and a desired water temperature.

The water purifier further comprises a second pipeline connected in parallel with the first pipeline between the water outlet and the water intake of the water purifying tank, and the pumping assembly further comprises a second pump arranged on the second pipeline, wherein the rated pumping flow rate of the second pump is greater than the rated pumping flow rate of the first pump. Under the condition that the user has high requirements on the water intake flow, the water purifier can pump out the purified water in a large flow through the second pump on the second pipeline.

The water purifier further comprises an input component for receiving water taking flow of a user and generating flow information, and a controller for controlling the operation of the first pump and/or the second pump based on the flow information. The input assembly may also generate flow information by receiving a user's flow of water. The controller can selectively control the first pump or the second pump to operate by judging the flow information. In some particular scenarios, the controller may also control the first pump and the second pump to operate simultaneously. Illustratively, when the user takes cold water, it may be pumped by the second pump and to the intake. At this time, the output flow can reach more than 2L/min, and the large-flow water supply is realized.

The water purifier further comprises a prompt component and a controller, wherein the controller is further used for controlling the pumping component to be closed and controlling the prompt component to send prompt information when the water level is lower than or equal to the lower limit of the water level. When the water level of the clean water tank is too low, the clean water output flow is too small, and even no water is output. Not only is the user unable to draw water, but it can also cause the pumping assembly to idle. The pumping assembly idling may cause overheating or even damage to the motor. In the case where the water purifier includes a heating assembly, if water is continuously supplied in the case where the water level of the purified water tank is too low, dry heating of the heating assembly may also be caused. The controller controls the prompt component to send prompt information to the user and simultaneously controls the pumping component to be closed, so that the pumping component and the heating component can be protected, and meanwhile, user feedback is given to enable the user to clearly know that water cannot be taken, and user experience is improved.

The water purifier may further include a controller for controlling the water inlet control valve to be closed when the water level is greater than or equal to an upper water level limit. The controller can cut off the raw water pipeline when the water level of the purified water tank reaches the upper limit, and can prevent the purified water from overflowing.

Illustratively, the filter assembly may include a reverse osmosis filter element. Illustratively, the daily water yield of the filter assembly is no less than 400 gallons. The reverse osmosis filter element can provide high-quality purified water for users. When the pressure of tap water is used as the working pressure of the filter assembly, the water outlet flow is about one third of the rated purified water flow, so that the purified water flow of the water purifier is further reduced by adopting the small-flux filter assembly (daily water yield is not more than 400 gallons), and the use requirement of a user is difficult to meet. And with the development of water purification technology, the price of the high-flux filter component is gradually reduced to a range acceptable to users. Therefore, the water purifier preferably employs a large flux filter assembly. In one embodiment, the water purifier adopts a filter assembly with 600 gallons of daily water yield, and under the pressure of tap water, the daily water yield can reach 200 gallons, and the water purifier matched with the water purifying tank can be equivalent to the water purifier provided with the small-flux filter assembly of the booster pump, so that the water purifier can meet the demands of users.

Illustratively, the water purifier further comprises a pre-filter element, wherein the pre-filter element is arranged on the raw water pipeline in series, and the pre-filter element is positioned between the water inlet control valve and the filtering component. The preposed filter element can perform primary filtration on water entering the filter assembly, and filter out impurities with larger particles such as sediment, rust and the like, so that the service life of the filter assembly is prolonged. And a shunt can be additionally arranged at the water outlet of the front filter element and used for providing domestic water after coarse filtration for users, and the filter can be used for vegetable washing, rice washing and the like.

Illustratively, the pre-filter cartridge is located between the water supply port and the water inlet control valve. Thus, the pre-filter element can also provide protection for the water inlet control valve so as to prolong the service life of the water inlet control valve.

In the summary, a series of concepts in a simplified form are introduced, which will be further described in detail in the detailed description section. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

Advantages and features of the utility model are described in detail below with reference to the accompanying drawings.

Drawings

The following drawings are included to provide an understanding of the utility model and are incorporated in and constitute a part of this specification. Embodiments of the present utility model and their description are shown in the drawings to explain the principles of the utility model. In the drawings of which there are shown,

Fig. 1 is a waterway diagram of a water purifier according to a first exemplary embodiment of the present utility model;

fig. 2 is a waterway diagram of a water purifier according to a second exemplary embodiment of the present utility model;

Fig. 3 is a waterway diagram of a water purifier according to a third exemplary embodiment of the present utility model;

Fig. 4 is a waterway diagram of a water purifier according to a fourth exemplary embodiment of the present utility model;

wherein the above figures include the following reference numerals:

10. Tap water inlet, 20, water intake, 30, water outlet, 40, flowmeter, 100, clean water tank, 101, water inlet, 102, water outlet, 103, water level lower limit, 104, water level upper limit, 200, filter assembly, 201, raw water inlet, 202, clean water outlet, 203, concentrated water outlet, 210, pre-filter element, 230, concentrated water proportional valve, 310, first pipeline, 321, first pump, 322, heating assembly, 323, second pump, 330, second pipeline, 500, water inlet control valve, 600, raw water pipeline.

Detailed Description

In the following description, numerous details are provided to provide a thorough understanding of the utility model. However, it will be understood by those skilled in the art that the following description illustrates preferred embodiments of the utility model by way of example only and that the utility model may be practiced without one or more of these details. Furthermore, some technical features that are known in the art have not been described in detail in order to avoid obscuring the utility model.

In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the present utility model. It will be apparent that embodiments of the utility model may be practiced without limitation to the specific details that are set forth by those skilled in the art. Preferred embodiments of the present utility model are described in detail below, however, the present utility model may have other embodiments in addition to these detailed descriptions.

The embodiment of the utility model provides a water purifier. Hereinafter, a water purifier according to an embodiment of the present utility model will be described in detail with reference to the accompanying drawings.

As shown in fig. 1, the water purifier may have a water intake 10, a water intake 20, and a water discharge 30. By way of example and not limitation, the tap-hole 10 may be connected directly to a tap-water pipe or to a tap-water tap by way of a tap adapter and a pipe. The intake 20 may be used to provide clean water to a user. Illustratively, the water purifier may include a faucet, and the water intake 20 may be provided on the faucet. In another embodiment, the water purifier may include a quick connect fitting, and the water intake 20 is an opening of the quick connect fitting and may be connected to the faucet by a pipe. In a preferred embodiment, the water purifier includes a smart faucet, and the water intake 20 may be provided at the smart faucet.

The water purifier may include a filter assembly 200. The filter assembly 200 may filter raw water to remove harmful bacteria, heavy metals, and other impurities therein, thereby providing a user with high-quality purified water. The filter assembly 200 may include a raw water inlet 201 and a purified water outlet 202. The filter assembly 200 may include a reverse osmosis filter cartridge, a nanofiltration filter cartridge, or the like. The filter assembly 200 generally requires a certain amount of pressure to operate. As described above, it is generally necessary to increase the pressure of raw water using a booster pump to achieve a nominal water flux. Although these cartridges can only output purified water at a rated flow rate at a rated raw water pressure, it does not mean that purified water cannot be produced at a pressure lower than the rated raw water pressure. Municipal tap water has certain pressure, and according to national standards of China (national standards for residential district Water supply design Specification) (GB 50015-2014), the water pressure of tap water in residential areas is not lower than 0.2MPa, and the water pressure of high-rise residential standards is not lower than 0.3MPa. The running water pressure may be different due to different execution conditions in different areas. It is generally considered that the lower limit of the water pressure of tap water is 0.1MPa and the upper limit thereof is not higher than 0.4MPa. Taking tap water pressure of 0.2-0.3MPa as an example in the normal case, the water pressure is smaller than the water pressure (0.6-0.7 MPa) which can be provided by the booster pump. The filter assembly 200 can thus output purified water at approximately one third of the rated flow rate under the water pressure of tap water.

The reverse osmosis cartridge and the nanofiltration cartridge produce a proportion of concentrate in operation, and the filter assembly 200 comprising one or both of the cartridges is therefore also provided with a concentrate outlet 203. The concentrate outlet 203 communicates to the drain port 30 through a concentrate proportional valve 230. The concentrate proportioning valve 230 is in a closed condition to maintain the pressure required for operation of the filter assembly 200 and to allow a flow of concentrate through the concentrate proportioning valve 230. The drain port 30 may be in communication with the outside for draining the portion of the concentrate. Specifically, for example, the drain port 30 may be connected to a drain pipe, which may be connected to a sewer or a container for receiving concentrated water. The user can use the concentrate in the container for various purposes if desired. The user can reuse the collected concentrated water to save water. Illustratively, the concentrate proportioning valve 230 is in an open condition, and raw water may quickly pass through the filter assembly 200 and the concentrate proportioning valve 230, thereby flushing the filter assembly 200.

The water purifier may further include a clean water tank 100, and the clean water tank 100 is used to store clean water that is filtered by the filter assembly 200 and then outputted. The water pressure of the raw water inlet 201 is not greater than the water pressure of the water supply port 10, and it is considered that an element for increasing the water pressure, such as the booster pump described above, is not provided on the line from the raw water inlet 201 to the water supply port 10. Under the condition that the booster pump is not used for boosting raw water, the raw water pressure reaching the filter assembly 200 cannot reach the rated working pressure of the filter assembly 200, the efficiency of the filter assembly 200 for outputting purified water is low, and the purified water flow output by the water purifier is low. If the output clean water is directly provided to the user, the waiting time for the user to take water is increased. Clean water tank 100 may store a small flow of clean water output from filter assembly 200. When a user takes water, the stored purified water is directly discharged from the purified water tank 100 to the outside without waiting for the purified water to be produced. The fresh water tank 100 may have a water inlet 101 and a water outlet 102. The fresh water tank water inlet 101 communicates with the fresh water outlet 202 of the filter assembly 200 so as to supply fresh water to the fresh water tank 100 in the case of fresh water machine-made water. The water outlet 102 may be connected to the water intake 20. By way of example and not limitation, the water inlet 101 and the water outlet 102 may be installed at the bottom of the fresh water tank 100, which may make the upper structure of the fresh water tank 100 relatively simple, and may also make the fresh water stored in the fresh water tank 100 output the fresh water outwardly under its own weight. The gravity of the purified water alone in the purified water tank 100 may cause the output purified water to be smaller in flow rate to the outside. In some embodiments described below, a water pump may be provided downstream of the outlet 102 of the fresh water tank 100 to increase the output fresh water flow and optimize the user experience.

The water purifier may further include a water level detecting assembly for detecting the water level in the fresh water tank 100. The water purifier may further include a water inlet control valve 500. The water inlet control valve 500 is provided on the raw water line 600. The inlet control valve 500 is closed when the water level in the fresh water tank 100 is higher than or equal to the upper water level limit 104. By closing inlet control valve 500 when the water level in fresh water tank 100 reaches upper water level limit 104, it is possible to avoid excessive water level, resulting in overflow of fresh water from fresh water tank 100. By way of example and not limitation, the water level detection assembly and the inlet control valve may be an integrated piece, such as a float valve. The float valve may include a float ball portion, which may be provided in the fresh water tank 100, and a valve portion, which may be provided on the raw water line 600. The float portion may rise and fall with the water level so that the valve portion is actuated. Specifically, for example, when the water level in the fresh water tank 100 is lowered, the float valve communicates the raw water line 600. When the water level in the fresh water tank 100 reaches the upper water level limit 104, the float valve closes the raw water line 600. Illustratively, the water level detection assembly may also 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, and the like. In this case, the water purifier may further include a controller, the water inlet control valve may include a solenoid valve, and the controller may control the water inlet control valve according to water level information of the water level detection assembly. Thus, automatic water supplementing can be realized.

In the technical scheme, by canceling the booster pump and only preparing the purified water by the water pressure of tap water, the noise generated in the water purification process can be greatly reduced. Since the water pressure of the tap water generally does not reach the rated operation pressure of the filter assembly 200, resulting in a lower filtering efficiency of the filter assembly 200 than that in normal operation, the fresh water tank 100 is provided to store the fresh water outputted from the filter assembly. The water purifier passes through the water level detecting assembly and the water inlet control valve 500, and when the water level of the water purifying tank 100 is lowered, the water inlet control valve 500 is activated so that tap water having pressure enters the filtering assembly 200 to produce water. This generally ensures that there is sufficient fresh water in fresh water tank 100 when the user is taking water. When the water level of the fresh water tank 100 reaches the upper limit, the raw water line 600 is shut off, and the overflow of fresh water can be prevented. In summary, the water purifier can rapidly supply a large amount of purified water to the user, and slowly supplement water to the purified water tank 100 with low noise until it is full after the user takes water.

In actual use, the user may pressurize the tap water taken into the user's home as a whole or individually for the pipe connected to the water purifier tap 10. In this case, the water pressure reaching the water purifier water supply port may be greater than the standard tap water pressure. However, the water purifier itself does not secondarily pressurize the water entering the tap water port 10, so that the water purifier hardly generates noise when in operation.

Referring to fig. 2, the water purifier may further include a first pipe 310. The water inlet of the first pipeline 310 is connected to the water outlet 102 of the fresh water tank 100, and the water outlet of the first pipeline 310 is connected to the water intake 20. When a user takes water, the purified water stored in the purified water tank 100 may be transferred to the water intake 20 through the first pipe 310 to provide the purified water to the user. Since the purified water in the purified water tank 100 is generally pressureless, the output flow rate of the purified water is generally small under the gravity of the purified water itself. The water purifier may further include a pumping assembly. The pumping assembly may include a first pump 321 disposed on the first conduit 310. Illustratively, the first pump 321 may comprise any suitable water pump, such as a diaphragm pump, a gear pump, a centrifugal pump, or the like. The water inlet of the first pump 321 is communicated to the water outlet 102 of the fresh water tank 100 through the first pipeline 310, and the water outlet of the first pump 321 is communicated to the water intake 20. When a user takes water, the first pump 321 may pump out the purified water stored in the purified water tank 100 and pump to the water intake 20. This allows the user to be provided with clean water at a greater flow rate. And even though the intake port 20 of the water purifier is located higher than the fresh water tank 100, fresh water can be pumped to the intake port 20 by the first pump 321. In some embodiments, the first pump 321 may also be used to regulate the output flow of clean water.

The purifier may also include a heating assembly 322. A heating assembly 322 is disposed in series on the first conduit 310 downstream of the first pump 321. Heating assembly 322 may include any suitable heating element such as a hot pot, thick film heater, electromagnetic heater, or the like. The hot tank may heat the purified water and store the hot water therein. The thick film heater, the electromagnetic heater and the like belong to instant heating type heating elements, and take the thick film heater as an example, the thick film heater can realize instant heating, and the requirements of users for drinking hot water, making tea, making coffee and the like, which need to use the hot water, are met. In some embodiments, the heating power of the heating assembly 322 is controlled, so that the user can obtain water with different temperatures, and the practicability and convenience of the water purifier are improved. The first pump 321 may be a flow control pump that can precisely control and regulate the output flow over a given flow range. For a water purifier with the heating component 322 comprising an instant heating element, the flow control pump is matched with the heating component 322, and the water temperature of the output water flow can be accurately controlled by changing the water flow and the heating power. Specifically, for example, when the temperature of the hot water output by the water purifier is high, since the heating power of the heating component 322 is limited, the pumping flow rate of the flow control pump can be properly reduced, so that the temperature of the hot water output meets the requirement.

In some exemplary embodiments, the output flow rate of the flow control pump and the heating power of the heating assembly 322, etc. may be manually controlled by, for example, a knob or the like. In a preferred embodiment, the water purifier may further include a controller. The controller may control the output flow of the flow control pump and the heating power of the heating assembly 322. The flow control pump can also provide stable water flow for the heating component 322, so that water flow fluctuation or intermittent operation is avoided, thereby ensuring that the heating component 322 can continuously and uniformly heat purified water, ensuring the stability and consistency of heating effect and preventing dry burning. In one embodiment, a temperature sensor may be further provided on the heating assembly 322 or downstream of the heating assembly 322 for detecting the temperature of the hot water, and the controller may feedback-control the heating assembly 322 according to the temperature of the hot water, so that the temperature of the outputted hot water is more accurate and dry burning can be prevented.

In an exemplary embodiment, to ensure the accuracy of the amount of water supplied, the maximum flow rate of the flow control pump is about 1.1L/min. As shown in fig. 4, the water purifier may further include a flow meter 40, and the flow meter 40 may be disposed in series on the first conduit 310 downstream of the heating assembly 322. The flow meter 40 is used for detecting the flow rate of the purified water on the first pipeline 310 and feeding back the flow rate information to the controller, and the controller can adjust the pumping flow rate of the flow control pump according to the flow rate information, so as to further ensure the accuracy of the water supply flow rate. The controller can be built by adopting electronic elements such as a comparator, a register, a digital logic circuit and the like, or can be realized by adopting processor chips such as a singlechip, a microprocessor, a Programmable Logic Controller (PLC), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), a Programmable Logic Array (PLA), an Application Specific Integrated Circuit (ASIC) and the like and peripheral circuits thereof.

Illustratively, the water purifier may include an input assembly (not shown) for receiving a water intake operation of a user and generating water intake information. The input components may include a touch screen, keys, etc. For example, the input component may be provided on a smart tap. Optionally, the input component may also include a receiver for accepting mode selection operations entered by a user through a user operation interface on their electronic device. In summary, the input component may be used to receive switching information entered by a user. As described above, the water purifier may include a controller. The water intake information may include one or more of water amount information, flow rate information, desired water intake temperature, and the like. The controller can control the flow control pump to change the flow based on the water intake information, or control the heating power of the heating component 322 based on the water intake information, or control the working time of the flow control pump based on the water intake information, so as to control the water amount of purified water, and can also control one or more of the above. This provides the user with purified water in a desired state including a desired amount of water, a desired flow rate, and a desired water temperature.

As described above, in order to ensure accurate flow control, the rated pumping flow rate of the flow control pump is about 1.1L/min. In case that the user has no high demand for the water intake flow rate, the heated purified water or the unheated purified water may be taken through the first pipe 310 of the first pump 321. In case that the user is not satisfied with the above flow rate, as shown in fig. 4, the water purifier may further include a second pipe 330, for example. The second line 330 may be connected in parallel with the first line 310 between the water outlet 102 of the fresh water tank 100 and the water intake 20. The pumping assembly may also include a second pump 323 disposed on the second conduit 330. The second pump 323 may likewise comprise one or more of a diaphragm pump, a gear pump, or a centrifugal pump. Wherein the nominal pumping flow rate of the second pump 323 is greater than the nominal pumping flow rate of the first pump 321. Specifically, for example. The rated flow rate of the second pump 323 may be not less than 2L/min. By way of example and not limitation, the input assembly may also be configured to receive a user's water intake flow and generate flow information. The controller may selectively control the operation of the first pump 321 or the second pump 323 by determining the flow rate information. In some particular scenarios, the controller may also control the first pump 321 and the second pump 323 to operate simultaneously. Illustratively, when a user takes cold water, it may be pumped by the second pump 323 and pumped to the intake 20. At this time, the output flow can reach more than 2L/min, and the large-flow water supply is realized. Referring back to fig. 3, the water purifier may exemplarily include only the second pipe 330 in a scene where the output of hot water is not required.

The water purifier may further include a prompt component (not shown). The prompting component may be located on an intelligent faucet. Illustratively, the prompting component may include any prompting method to prompt the user, such as audible prompts, light prompts, and the like. When the water level in fresh water tank 100 is less than or equal to lower water level limit 103, the controller may control the prompting component to issue a prompting message and simultaneously control the pumping component to turn off. It will be readily appreciated that when the water level in the fresh water tank 100 is too low, the fresh water output flow is too low or even no water is output. Not only is the user unable to draw water, but it can also cause the pumping assembly to idle. The pumping assembly idling may cause overheating or even damage to the motor. In the case where the water purifier includes the heating assembly, if water is continuously supplied in the case where the water level of the fresh water tank 100 is excessively low, dry heating of the heating assembly 322 may also be caused. The controller control prompt component sends prompt message to the user and simultaneously controls the pumping component to be closed, so that the pumping component and the heating component 322 can be protected, and simultaneously, user feedback is given to ensure that the user definitely knows that water cannot be taken, and user experience is improved.

The water purifier may also include a pre-cartridge 210. The pre-filter cartridge 210 may be disposed in series upstream of the filter assembly 200. The pre-cartridge 210 may be single stage or multi-stage and may include one or more of an activated carbon cartridge, a PP cotton cartridge, a variety of composite cartridges therein, and the like. The pre-filter 210 is located before the filter assembly 200, and can perform primary filtration on water entering the filter assembly 200 to remove impurities with larger particles such as sediment, rust, etc., so as to prolong the service life of the filter assembly 200. In some embodiments, a shunt (not shown) may be further disposed at the water outlet of the pre-filter 210, so as to provide the user with the filtered domestic water, which may be used for vegetable washing, rice washing, etc. The pre-filter 210 has a nearly negligible effect on the flow rate and pressure of the water. Illustratively, the pre-cartridge 210 may be located between the water supply 10 and the water inlet control valve 500. The pre-cartridge 210 thus also provides protection to the inlet control valve 500 to extend its useful life.

Illustratively, the filter assembly 200 includes a reverse osmosis cartridge. The pore size of the reverse osmosis filter element is five parts per million (0.1 nanometers) of the hair, and bacteria and viruses which cannot be seen by naked eyes are 10 times of the pore size of the reverse osmosis filter element. Therefore, only water molecules and part of mineral ions beneficial to human bodies can pass through, other impurities and heavy metals are discharged from the concentrated water outlet, and high-quality purified water is provided for users. As described above, when the tap water pressure is used as the operating pressure of the filter assembly 200, the outlet water flow rate is about one third of the rated purified water flow rate, so the use of a small-flux filter assembly with a water yield of not more than 400 gallons) may result in further reduction of the purified water flow rate of the water purifier, which is difficult to satisfy the user's use demands. And with the development of water purification technology, the price of the high-flux filter component is gradually reduced to a range acceptable to users. Therefore, the water purifier preferably employs a large flux filter assembly. In one embodiment, the water purifier uses a 600 gallon daily water yield filter assembly, and under the pressure of tap water, the daily water yield can reach 200 gallons, and the water purifier can be matched with the water purifying tank 100 to be equivalent to a water purifier provided with a small flux filter assembly of a booster pump, so that the water purifier can meet the demands of users.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front", "rear", "upper", "lower", "left", "right", "transverse", "vertical", "horizontal", "top", "bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of the present utility model, and the azimuth terms "inside", "outside" refer to inside and outside with respect to the outline of each component itself.

For ease of description, regional relative terms, such as "above," "upper surface," "above," and the like, may be used herein to describe regional positional relationships of one or more components or features to other components or features shown in the figures. It will be understood that the relative terms of regions include not only the orientation of the components illustrated in the figures, but also different orientations in use or operation. For example, if the element in the figures is turned over entirely, elements "over" or "on" other elements or features would then be included in cases where the element is "under" or "beneath" the other elements or features. Thus, the process is carried out, the exemplary term "above" may be included. Upper and lower. Two orientations below. Moreover, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and all such cases are intended to be encompassed herein.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, components, assemblies, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein.

The present utility model has been illustrated by the above-described embodiments, but it should be understood that the above-described embodiments are for purposes of illustration and description only and are not intended to limit the utility model to the embodiments described. In addition, it will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that many variations and modifications are possible in light of the teachings of the utility model, which variations and modifications are within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (10)

1. A water purifier having a tap water inlet, a water intake and a water outlet, the water purifier comprising:

The filtering assembly comprises a raw water inlet, a purified water outlet and a concentrated water outlet, wherein the raw water inlet is communicated to the tap water port through a raw water pipeline, the water pressure of the raw water inlet is not greater than that of the tap water port, the concentrated water outlet is communicated with the water outlet, and the water outlet is communicated with the outside;

The water inlet of the water purifying tank is communicated with the water purifying outlet, and the water outlet of the water purifying tank is communicated with the water intake;

A water level detecting assembly for detecting a water level in the fresh water tank, and

The water inlet control valve is arranged on the original water pipeline, and the water inlet control valve is closed when the water level is greater than or equal to the upper limit of the water level.

2. The water purifier of claim 1, further comprising a first conduit and a pumping assembly, the water inlet of the first conduit being coupled to the water outlet of the clean water tank, the water outlet of the first conduit being coupled to the water intake, the pumping assembly comprising a first pump disposed on the first conduit.

3. The water purifier of claim 2, further comprising a heating assembly disposed in series on the first conduit downstream of the first pump,

The first pump is a flow control pump.

4. A water purifier according to claim 3, the water purifier is characterized by further comprising:

The input assembly is used for receiving water taking operation of a user and generating water taking information;

And the controller is used for controlling the pumping flow of the first pump and the heating power of the heating assembly based on the water taking information.

5. The water purifier of claim 2, further comprising a second conduit connected in parallel with the first conduit between the water outlet of the fresh water tank and the water intake, the pumping assembly further comprising a second pump disposed on the second conduit, wherein,

The nominal pumping flow rate of the second pump is greater than the nominal pumping flow rate of the first pump.

6. The water purifier according to claim 5, the water purifier is characterized by further comprising:

The input assembly is used for receiving water taking flow of a user and generating flow information;

And the controller is used for controlling the operation of the first pump and/or the second pump based on the flow information.

7. The water purifier of claim 2, further comprising a reminder assembly and a controller, wherein the controller is further configured to control the pumping assembly to close and the reminder assembly to send a reminder message when the water level is less than or equal to a lower water level limit.

8. The water purifier of claim 1, further comprising a controller for controlling the water inlet control valve to close when the water level is greater than or equal to an upper water level limit.

9. The water purifier of claim 1, wherein the water purifier comprises a water inlet and a water outlet,

The filter assembly includes a reverse osmosis filter element.

10. The water purifier of claim 1, further comprising a pre-filter element disposed in series on the raw water line, wherein:

The pre-filter element is positioned between the water inlet control valve and the filter assembly, and/or

The preposed filter element is positioned between the tap water port and the water inlet control valve.