CN223813364U - Water purifier - Google Patents

Abstract

The utility model provides a water purifier which comprises a filter element assembly, a shell, a conductivity sensor and a turbidity sensor, wherein the filter element assembly is arranged in the shell, a filtering cavity is formed between the filter element assembly and the shell, the shell is provided with a water inlet and a water outlet, the water inlet is communicated with the filtering cavity, a filtering inlet of the filter element assembly is communicated with the filtering cavity, a filtering outlet of the filter element assembly is communicated with the water outlet, the conductivity sensor is arranged at the water inlet, the turbidity sensor is arranged on the shell or on the filter element assembly, and a detection end of the turbidity sensor is used for detecting the quality of raw water in the filtering cavity. According to the utility model, through dual monitoring of the conductivity sensor and the turbidity sensor, the attenuation slope is obtained by fitting the data of the conductivity and the turbidity, and the attenuation slope is compared with the filter element life attenuation slope database, so that the service life of the filter element can be predicted more accurately.

Description

Water purifier

Technical Field

The utility model belongs to the technical field of water purifiers, and particularly relates to a water purifier.

Background

At present, the main water source in most areas is surface water, and the surface water is treated by a tap water plant and then is put into a resident waterway pipe network. However, the surface water is easy to be polluted by river sand and the like, and cannot be completely settled in a running water plant. When residents use the water in kitchens and bathrooms, the phenomenon of yellow water and the like of tap water can be frequently found.

With the pursuit of healthy life and the increasing attention of people to water quality safety, the household water purifier becomes a necessary electrical appliance for many families. However, the conventional reverse osmosis water purifier often requires a large space to be assembled under the cabinet, and most use scenes do not require filtered purified water. In addition, most water purifiers have the problem that the filter element is not replaced timely or excessively, so that the water purifying effect is affected, and resource waste is possibly caused. In order to solve the problems, the miniature water purifier has a compact and convenient structure, but the existing miniature water purifier cannot intuitively know the service life of the filter element, so that a user cannot accurately grasp the replacement time of the filter element. However, the conventional filter element service life judging means only uses a conductivity sensor to detect the water hardness, but has the problem that the detection data is single and cannot be used for representing the actual use environment reliably. For example, the condition that the service life of the filter element is rapidly expired in the low-hardness water quality area and the service life is not timely and timely reminded often occurs, so that user complains are caused, after a plurality of areas are actually inspected, the condition that the water quality hardness is low but the turbidity in water is high is found, for example, suspended and melted substances such as colloid in water adhere to the surface of the filter element, so that pollution and blockage are caused.

Disclosure of utility model

The utility model provides a water purifier, which can solve the technical problems that the existing miniature water purifier only judges the service life of a filter element through conductivity values, has single detection data and cannot reliably represent the actual use environment, so that a user cannot accurately grasp the replacement time of the filter element.

The utility model provides a water purifier, which comprises a filter element assembly, a shell, a conductivity sensor and a turbidity sensor, wherein the shell is arranged on the filter element assembly;

The filter element assembly is arranged in the shell, a filter cavity is formed between the filter element assembly and the shell, the shell is provided with a water inlet and a water outlet, the water inlet is communicated with the filter cavity, a filter inlet of the filter element assembly is communicated with the filter cavity, and a filter outlet of the filter element assembly is communicated with the water outlet;

The conductivity sensor is arranged at the water inlet, the turbidity sensor is arranged on the shell or the filter element assembly, and the detection end of the turbidity sensor is used for detecting the quality of raw water in the filtering cavity.

In some embodiments, a flow sensor is disposed in the water outlet, an inlet end of the flow sensor being connected to a filtered outlet of the cartridge assembly.

In some embodiments, a fixing component is further arranged in the water outlet, the fixing component comprises a fixing piece, and the flow sensor is embedded in the fixing piece.

In some embodiments, the flow sensor is a split flow sensor, the flow sensor includes an impeller rotatably disposed in the mount, an inlet end of the impeller coupled to a filtration outlet of the cartridge assembly, and an induction module disposed on the housing, the induction module configured to detect rotation of the impeller.

In some embodiments, the fixing member includes a first sleeve and a second sleeve, two adjacent ends of the first sleeve and the second sleeve are respectively provided with a spigot, the opposite end of the first sleeve is provided with a first shaft sleeve, the opposite end of the second sleeve is provided with a second shaft sleeve, the impeller is provided with a rotating shaft, and two ends of the rotating shaft are respectively inserted into the first shaft sleeve and the second shaft sleeve.

In some embodiments, the filtering outlet of the filter element assembly is opposite to the water outlet, the fixing assembly further comprises a guide ring and a plurality of guide ribs, the guide ribs are arranged at intervals along the circumference of the fixing piece, one end of each guide rib is connected with the fixing piece, the other end of each guide rib is connected with the guide ring, one end face of each guide ring is abutted to the inner wall of the water outlet or the peripheral wall of each guide ring is abutted to the inner wall of the water outlet, and the other end face of each guide ring is abutted to the outer wall of the filter element assembly.

In some embodiments, the water inlet comprises a first flow passage and a second flow passage which are communicated with each other, one end of the first flow passage, which is away from the second flow passage, is connected with the assembly joint, the detection end of the conductivity sensor stretches into the first flow passage, one end of the second flow passage, which is away from the first flow passage, is communicated with the filtering chamber, and the sectional area of the second flow passage is smaller than that of the first flow passage.

In some embodiments, the water purifier further comprises a controller, the conductivity sensor is in telecommunication connection with the controller, the housing is vertically arranged, the controller is embedded at the top of the housing, the turbidity sensor is arranged at the top of the housing, the connection end of the turbidity sensor is electrically connected with the controller, and the detection end of the turbidity sensor extends into the filtering cavity.

In some embodiments, the water purifier further comprises a display screen, wherein the display screen is arranged on the outer wall of the shell, and the display screen is electrically connected with the controller.

In some embodiments, the housing is provided with a seal groove, a seal ring is arranged in the seal groove, and the turbidity sensor is in sealing connection with the seal groove through the seal ring.

The water purifier provided by the utility model has the following beneficial effects:

According to the utility model, the water quality can be more comprehensively evaluated through dual monitoring of the conductivity sensor and the turbidity sensor, the conductivity sensor can detect the mineral content in the water, the turbidity sensor can detect the content of suspended matters, colloid and other particulate matters in the water, the dual monitoring can more accurately reflect the real condition of the water quality of raw water, the attenuation slope is obtained by fitting the data of the conductivity and the turbidity, the service life of the filter element can be more accurately predicted by comparing the attenuation slope with the filter element service life attenuation slope database, and the method is more reliable than single conductivity detection due to consideration of multiple aspects of the water quality. Through accurate prediction filter core life, can avoid the waste of resources that the filter core caused of too early change, also can ensure simultaneously that the filter core can not become invalid after the use for a long time to guarantee the safety of quality of water, show filter core life-span value on the purifier, make the user can know the service condition of filter core directly perceivedly, in time change the filter core, improved user experience. And because of considering two parameters of conductivity and turbidity, the water purifier provided by the utility model can adapt to the water quality characteristics of different areas, and can be used for effectively filtering and monitoring both high-hardness water and low-hardness water with high turbidity.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those skilled in the art from this disclosure that the drawings described below are merely exemplary and that other embodiments may be derived from the drawings provided without undue effort.

FIG. 1 is a schematic diagram of a water purifier according to an embodiment of the present utility model;

FIG. 2 is a schematic illustration of a housing and cartridge assembly according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a fixing assembly according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a display screen according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a seal slot according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram of a first flow channel and a second flow channel according to an embodiment of the present utility model;

Fig. 7 is a schematic structural view of a fixing member according to an embodiment of the present utility model.

The drawing comprises a 1-filter element assembly, a 101-inner shell, a 102-filter element, a 2-outer shell, a 201-filter cavity, a 202-water inlet, a 221-first flow passage, a 222-second flow passage, a 203-water outlet, a 204-seal groove, a 3-conductivity sensor, a 4-turbidity sensor, a 5-flow sensor, a 501-impeller, a 601-fixing piece, a 611-first sleeve, a 612-second sleeve, a 602-guide ring, 603-guide ribs, a 7-fitting joint, an 8-controller and a 9-display screen.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

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", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, and 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 and outside" refer to inside and outside with respect to the outline of each component itself.

Spatially relative terms, such as "above," "upper" and "upper surface," "above" and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the process is carried out, the exemplary term "above" may be included. Upper and lower. Two orientations below. The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

Referring to fig. 1 in combination, according to an embodiment of the present utility model, there is provided a water purifier including a cartridge assembly 1, a housing 2, a conductivity sensor 3, and a turbidity sensor 4, wherein the cartridge assembly 1 is disposed in the housing 2, a filter chamber 201 is formed between the cartridge assembly 1 and the housing 2, the housing 2 has a water inlet 202 and a water outlet 203, the water inlet 202 communicates with the filter chamber 201, a filter inlet of the cartridge assembly 1 communicates with the filter chamber 201, a filter outlet of the cartridge assembly 1 communicates with the water outlet 203, the conductivity sensor 3 is disposed at the water inlet 202, the turbidity sensor 4 is disposed on the housing 2 or on the cartridge assembly 1, and a detection end of the turbidity sensor 4 is used to detect the quality of raw water in the filter chamber 201.

Specifically, when water is introduced into the water inlet 202, the conductivity sensor 3 detects the raw water flowing through the water inlet 202 to obtain a conductivity value of the raw water, the raw water flows into the filter chamber 201 from the water inlet 202, the detection end of the turbidity sensor 4 is positioned in the filter chamber 201 and contacts with the raw water in the filter chamber 201, the turbidity sensor 4 can detect the turbidity value of the raw water, the raw water flowing into the filter chamber 201 flows into the filter element assembly 1 for filtering, and the filtered water flows into the water outlet 203 from the filtering outlet of the filter element assembly 1 for water outlet. The data detected by the conductivity sensor 3 and the turbidity sensor 4 are fitted to obtain an attenuation slope, a life attenuation slope database of the filter element 102 is arranged in the water purifier, the attenuation slope in the database corresponds to the life of the filter element 102, and the attenuation slope obtained by the detection fitting is compared with the attenuation slope in the database to obtain a corresponding life value of the filter element 102 and display the corresponding life value on the water purifier.

In this embodiment, the water quality can be more comprehensively evaluated by dual monitoring of the conductivity sensor 3 and the turbidity sensor 4, the conductivity sensor 3 can detect the mineral content in the water, the turbidity sensor 4 can detect the content of suspended matters, colloid and other particulate matters in the water, the dual monitoring can more accurately reflect the real condition of the raw water quality, the attenuation slope can be obtained by fitting the data of the conductivity and the turbidity, the service life of the filter element 102 can be more accurately predicted by comparing the attenuation slope with the service life attenuation slope database of the filter element 102, and the method is more reliable than single conductivity detection due to consideration of multiple aspects of the water quality. Through accurate prediction filter core 102 life-span, can avoid the waste of resources that the too early filter core 102 of changing caused, also can ensure simultaneously that filter core 102 can not become invalid after the use for a long time to guarantee the safety of quality of water, show filter core 102 life-span value on the purifier, make the user can know the service condition of filter core 102 directly perceivedly, in time change filter core 102, improved user experience. In addition, as two parameters of conductivity and turbidity are considered, the water purifier of the embodiment can adapt to the water quality characteristics of different areas, and can effectively filter and monitor both high-hardness water and low-hardness water with high turbidity. The miniature water purifier with the visual filter element 102 with the service life displayed can be suitable for various families and small office places, and is especially suitable for users with high requirements on water quality, but the users want small equipment and simple operation. Whether the water purifier is arranged in a kitchen for purifying daily drinking water or placed in an office for staff to use, the water purifier can meet the water purification requirements in different scenes and provide healthy and safe drinking water for users.

It should be noted that, in the present embodiment, the conductivity sensor 3 is used to detect the hardness degree of raw water, the hardness of water mainly refers to the concentration of calcium and magnesium ions in water, and since these ions can conduct electricity, the presence of these ions affects the conductivity of water, and the conductivity sensor 3 measures the conductivity of water, and by analyzing the change of conductivity, the hardness of water can be calculated. The turbidity sensor 4 measures the turbidity of water by using the scattering and absorption of light when the light propagates in the water, and when a beam of light passes through the water sample, the light is scattered and absorbed by suspended particles in the water sample, so that the light intensity is attenuated, and the light intensity is attenuated in proportion to the concentration of the suspended particles in the water sample. The slope of the decay in the life of the filter element 102 may reflect the rate of degradation of the filter element 102, with a greater slope indicating a faster decay in the performance of the filter element 102 and a smaller slope indicating a slower decay in the performance.

As a specific embodiment, the filter element assembly 1 includes an inner case 101 and a filter element 102 provided in the inner case 101, the inner case 101 is provided with a filter inlet and a filter outlet, raw water flows in from the filter inlet, flows out from the filter outlet after filtration, a filter chamber 201 is formed between the inner case 101 and the outer case 2, a plurality of filter inlets are provided on a peripheral wall of the inner case 101, and water is introduced from a plurality of directions.

As shown in fig. 1 to 6, a flow sensor 5 is provided in the water outlet 203, and an inlet end of the flow sensor 5 is connected to a filtering outlet of the cartridge assembly 1.

Specifically, the raw water flowing into the filter chamber 201 flows into the filter element assembly 1 to be filtered, and the filtered water flows into the flow sensor 5 from the filter outlet of the filter element assembly 1, and the flow sensor 5 measures the flowing filtered water. Fitting the data detected by the conductivity sensor 3, the turbidity sensor 4 and the flow sensor 5, and comparing the attenuation slope obtained by the detection fitting with the attenuation slope in the database to obtain a corresponding service life value of the filter element 102 and displaying the service life value on the water purifier.

In this embodiment, the service life attenuation slope of the filter element 102 is further calibrated according to the real-time water flow collected by the flow sensor 5 at the water outlet 203, so as to provide accurate data support for the service condition of the filter element 102, and the filtering effect of the filter element 102 can be comprehensively evaluated by combining the data detected by the conductivity sensor 3 and the turbidity sensor 4, and the attenuation slope of the filter element 102 is calculated by data fitting, and compared with the standard attenuation slope in the database, so that the residual service life of the filter element 102 can be predicted. The life value of the filter element 102 is displayed on the water purifier in real time, and an intuitive filter element 102 replacement prompt is provided for a user, so that the user can replace the filter element 102 in time, and the safety and the purification effect of water quality are ensured.

Referring to fig. 1 to 3 in combination, a fixing assembly is further provided in the water outlet 203, the fixing assembly includes a fixing member 601, and the flow sensor 5 is embedded in the fixing member 601.

In this embodiment, when water passes through the flow sensor, in order to better fix the flow sensor 5, a fixing member 601 is disposed in the water outlet 203, the fixing member 601 fixes the flow sensor 5, the fixing member 601 provides a stable mounting platform for the flow sensor 5, so as to ensure that the sensor cannot displace due to vibration or water pressure change during use, thereby ensuring stability and accuracy of measured data, and the fixing member 601 can also reduce disturbance of water flow to the sensor, so as to ensure accuracy of the flow sensor 5 during measurement, especially under high-speed or turbulent conditions.

As a specific embodiment, the filter element assembly 1 is vertically arranged in the outer shell 2, the bottom end of the outer shell 2 is provided with the water outlet 203, the top end of the inner shell 101 is positioned in the outer shell 2, the bottom end of the inner shell 101 is in threaded connection with the outer shell 2, and a sealing ring is arranged at the joint.

As shown in fig. 1 and 7, the flow sensor 5 is a split flow sensor, the flow sensor 5 includes an impeller 501 and a sensing module, the impeller 501 is rotatably disposed in a fixing member 601, an inlet end of the impeller 501 is connected with a filtering outlet of the filter element assembly 1, and the sensing module is disposed on the housing 2, and is used for detecting rotation of the impeller 501.

In this embodiment, when water flows to the impeller 501, the kinetic energy of the water pushes the impeller 501 to rotate, the impeller 501 and the induction module form a whole, wherein the induction module is a hall element module, and the rotor is a magnetic rotor, so that the hall element module detects the rotating magnetic fields of different magnetic poles of the magnetic rotor, and generates high and low pulse levels by cutting magnetic lines to output to the controller, and then the controller 8 judges the calculated flow. The relative positions of the hall element module and the impeller 501, that is, the hall element module is arranged in the side wall of the housing 2, the center distance between the center of the cross section of the impeller 501 and the center of the cross section of the hall element module is generally about 0-8mm, and the specific size is determined by the selected split type flow sensor, so that the signal accuracy is ensured.

Referring to fig. 7 in combination, the fixing member 601 includes a first sleeve 611 and a second sleeve 612, the first sleeve 611 and the second sleeve 612 are detachably connected, and adjacent ends of the first sleeve 611 and the second sleeve 612 are respectively provided with a spigot, so that the first sleeve 611 and the second sleeve are mutually inserted through the spigot to realize the detachable connection. The first sleeve 611 is provided with a first shaft sleeve at the center, and the second sleeve 612 is provided with a second shaft sleeve at the center. The magnetic rotor of the impeller 501 is provided with a rotating shaft, two ends of the rotating shaft are respectively inserted into the first shaft sleeve and the second shaft sleeve, and the impeller 501 is connected in the rotor shell in a rotating way along with the mutual insertion of the first sleeve 611 and the second sleeve 612, so that the impeller 501 is assembled.

It should be noted that, although the sleeve is provided with a sleeve, the flow of water is not affected, and the first sleeve 611 may be connected to the filter outlet, or the second sleeve 612 may be connected to the filter outlet.

Referring to fig. 1 to 3, the filtering outlet of the filter element assembly 1 is opposite to the water outlet 203, the fixing assembly further comprises a guide ring 602 and a plurality of guide ribs 603, the guide ribs 603 are arranged at intervals along the circumferential direction of the fixed piece 601, one end of each guide rib 603 is connected with the fixed piece 601, the other end of each guide rib 603 is connected with the guide ring 602, one end face of the guide ring 602 is abutted against the inner wall of the water outlet 203 or the outer peripheral wall of the guide ring 602 is abutted against the inner wall of the water outlet 203, and the other end face of the guide ring 602 is abutted against the outer wall of the filter element assembly 1.

Specifically, the impeller 501 is installed in the fixing piece 601, after the inner shell 101 is in threaded connection with the outer shell 2, the inner shell 101 compresses the guide ring 602, the inner shell 101 further compresses and fixes the sensor, and the sensor is directly opposite-flushed by the water outlet 203 of the filter element 102 to ensure the smoothness of flow, so that the detection of turbulence interference of a cavity is avoided.

In this embodiment, the guide ribs 603 are circumferentially spaced along the fixing member 601, with one end connected to the fixing member 601 and the other end connected to the guide ring 602, which provides additional support and stability to ensure stability and reliability of the cartridge assembly 1 during installation and use. The arrangement of the guide ring 602 and the guide ribs 603 helps to ensure the coaxiality between the filter element assembly 1 and the water outlet 203, namely, the center lines of the guide ring 602 and the guide ribs are on the same straight line, so that the problem of difficult assembly or water leakage caused by coaxiality deviation can be avoided.

As a specific embodiment, the guide ribs 603 are disposed obliquely upward, and the diameter of the guide ring 602 is larger than that of the fixing member 601, so that a structure with a large top and a small bottom is formed, which is more convenient for the inner casing 101 to press the flow sensor 5 in the water outlet 203.

As shown in fig. 1 to 6, the water inlet 202 includes a first flow passage 221 and a second flow passage 222 which are communicated with each other, one end of the first flow passage 221 facing away from the second flow passage 222 is connected to the fitting 7, the detection end of the conductivity sensor 3 extends into the first flow passage 221, one end of the second flow passage 222 facing away from the first flow passage 221 is communicated with the filter chamber 201, and the sectional area of the second flow passage 222 is smaller than that of the first flow passage 221.

Specifically, the fitting 7 is opened, water in the faucet flows into the water inlet 202, water flows into the first flow passage 221 first, conductivity in the raw water is detected by the conductivity sensor 3, and the raw water flows into the second flow passage 222 and then into the filter chamber 201.

In this embodiment, by setting the first flow channel 221 and the second flow channel 222, the wall body of the water inlet 202 is provided with a channel capable of being plugged with the conductivity sensor 3, the channel requires that the probe of the conductivity sensor 3 is completely immersed in water, meanwhile, the sensor requires to be in contact with water for a certain time to perform data feedback because of the fact that the flow rate is too fast, and the data transmission is not timely and inaccurate. Therefore, the cross-sectional area of the second flow channel 222 is smaller than the cross-sectional area of the first flow channel 221, and is optimally equal to the cross-sectional area of the second flow channel 222 < half or more of the cross-sectional area of the first flow channel 221, so as to ensure that water stays in the first flow channel 221, and ensure that the conductivity sensor 3 can fully detect and transmit data. And because of the smaller cross-sectional area of the second flow passage 222, the velocity of the water flow in this flow passage is faster, facilitating the flow of water into the filter chamber 201.

As a specific embodiment, the water inlet 202 is provided on the bottom side wall of the housing 2, but by providing a flow path after water flows in from the water inlet 202, raw water starts to be injected from the top of the housing 2, so that a sufficient amount of water can be ensured to be filtered in the filter chamber 201.

Referring to fig. 1 to 6, the water purifier further includes a controller 8, the conductivity sensor 3 is in telecommunication connection with the controller 8, the housing 2 is vertically arranged, the controller 8 is embedded at the top of the housing 2, the turbidity sensor 4 is arranged at the top of the housing 2, the connection end of the turbidity sensor 4 is electrically connected with the controller 8, and the detection end of the turbidity sensor 4 extends into the filtering chamber 201.

In this embodiment, the controller 8 is embedded at the top of the housing 2 and electrically connected with the turbidity sensor 4, so that the controller 8 can conveniently receive the data of the turbidity sensor 4 by virtue of the integrated design, real-time monitoring and intelligent control on the working state of the water purifier are realized, the controller 8 can comprehensively analyze the water quality condition by virtue of the telecommunication connection between the conductivity sensor 3 and the controller 8 and the data of the turbidity sensor 4, and intelligent management is realized. The controller 8 and the turbidity sensor 4 are arranged at the top of the shell 2, the distance between the two parts is shortened, so that the connecting end of the turbidity sensor 4 is directly connected with the pin of the controller 8, the longer wire connection is avoided, the wiring inside the water purifier can be simplified, the wiring complexity is reduced, the equipment is tidier, the connecting wire is shortened, the interference in the signal transmission process can be reduced, the stability and the reliability of the signal are improved, the signal transmission distance is reduced, the response speed of the controller 8 to the turbidity sensor 4 signal is improved, and the water quality data is acquired and processed more timely.

As a specific embodiment, when the water outlet is provided with a flow sensor, the sensing module is electrically connected with the controller, and the flow sensor is used for detecting water flow.

Referring to fig. 1 to 6 in combination, the water purifier further includes a display screen 9, the display screen 9 is disposed on the outer wall of the housing 2, and the display screen 9 is electrically connected to the controller 8.

In this embodiment, the data detected by the conductivity sensor 3, the turbidity sensor 4 and the flow sensor 5 are fitted, and the corresponding life value of the filter element 102 is obtained by comparing the attenuation slope obtained by the detection and fitting with the attenuation slope in the database and displayed on the display screen 9, and the display screen 9 can intuitively display the current working state and related information of the water purifier to the user, so that the user can know the life condition of the filter element 102 of the water purifier in real time. In addition, the display screen 9 can integrate various information, such as time, temperature, filter element 102 use time, time for replacement, etc.

As a specific embodiment, by providing a display panel installation area on the top of the housing 2, providing information on the use state and the lifetime after fitting of the mini water purifier, in order to enable the display panel to be fixed on the mini water purifier, the sealing fit of the turbidity sensor 4 is integrated on the installation area, the display panel is fixed by the sealing fit of the turbidity sensor 4 and the housing 2, and simultaneously the turbidity sensor 4 and the display panel are integrated into a module.

Referring to fig. 1 to 5 in combination, the housing 2 is provided with a seal groove 204, a seal ring is provided in the seal groove 204, and the turbidity sensor 4 is hermetically connected with the seal groove 204 through the seal ring.

In this embodiment, the sealing ring has the main function of ensuring that the junction between the turbidity sensor 4 and the housing 2 is waterproof, preventing water from leaking into the sensor or the water purifier, protecting internal circuits and elements from being corroded and damaged by moisture, and the sealing groove 204 and the sealing ring enhance the stability of the structure of the water purifier, reduce structural displacement caused by vibration or pressure change, and ensure the accuracy and stability of the measurement of the sensor.

The working process of the water purifier comprises the steps of establishing a life attenuation slope database of the filter element assembly 1 and setting an initial attenuation slope value of the water purifier;

The conductivity sensor 3 detects a raw water conductivity value at the water inlet 202, and the turbidity sensor 4 detects a raw water turbidity value in the filter chamber 201;

Fitting the detected raw water conductivity value and the raw water turbidity value to obtain a first attenuation slope value, comparing the first attenuation slope value with the initial attenuation slope value, and outputting a service life value of the filter element 102 according to a comparison result.

It should be noted that, the life decay slope of the filter element 102 refers to the rate at which the filtration efficiency or performance of the filter element 102 gradually decreases with the lapse of time and the increase of the usage frequency during the filtration process, and the trend of the performance of the filter element 102 with the lapse of time is considered that the raw water has an influence on the life, so that the first decay slope after the raw water conductivity value and the raw water turbidity value are fitted is compared with the decay slope in the database. In this embodiment, the life-span attenuation slope database refers to that different conductivity values and turbidity values have been collected in advance, and according to each different conductivity value and turbidity value, a corresponding life value of the filter element 102 is calculated by fitting, and the attenuation slope database includes a mutual collocation scheme among the values, so that after comparing the detected first attenuation slope with the values in the database, the corresponding life value of the filter element 102 can be obtained.

Specifically, when water is introduced into the water inlet 202, the data collected by the conductivity sensor 3 is X S/m (X represents a collected data value, S/m represents a conductivity index unit), the conductivity of tap water of domestic drinking water should be not more than 2500 μs/cm (microsiemens/cm), and the data collected by the turbidity sensor 4 is Y NTU (Y represents a collected data value, NTU represents a turbidity index unit). For example, the turbidity of domestic drinking water is normally required to be 1NTU, and the water quality in the area with extremely poor water quality must not exceed 3NTU. In this embodiment, the turbidity is divided in the controller 8, for example, turbidity Y >3NTU is bad water quality, turbidity Y is poor water quality between 1-3 NTU, turbidity Y is good water quality between 0.3-1 NTU, and turbidity Y is good water quality between 0.1-0.3 NTU.

Specifically, for example, raw water in a region is collected, when conductivity data collected in advance judges that the water conductivity in the region is above a median value, for example, the conductivity X is more than 500 mu S/cm, the region is defined as a region with harder water quality, then the data is combined with turbidity sensor 4 data, for example, the sampling turbidity Y is between 1 NTU and 3NTU, after fitting, the filter element 102 is judged to have bad use environment, namely, the water quality of the raw water is not good as a whole, and the service life of the filter element 102 is adjusted according to the result of a database fitting curve.

Specifically, after the first attenuation slope is compared with the values in the database, the output process after the service life of the filter element 102 is adjusted is that when the filter element 102 is delivered from the factory, the service life attenuation slope of the filter element 102 written in the controller 8 is 1, namely the initial attenuation slope value of the water purifier is 1, and the attenuation slopes under different water qualities are recorded in the controller 8 to form a service life attenuation slope database. When the user first uses the filter cartridge 102, the conductivity and turbidity of the raw water flowing from the water inlet 202 are high, if the decay slope written by the controller 8 is 0.8, the service life of the filter cartridge 102 is shown as a percentage product according to the decay rate of 0.8, that is, the service life of the filter cartridge 102 is 85%.

When the flow sensor 5 is arranged in the water outlet 203, the working process is that the flow sensor 5 detects the water outlet flow value at the water outlet 203, fits the detected raw water conductivity value, raw water turbidity value and water outlet flow value to obtain a second attenuation slope value, compares the second attenuation slope value with the initial attenuation slope value, and outputs the service life value of the filter element 102 according to the comparison result.

In this embodiment, the flow sensor 5 also synchronously collects the water flow, and feeds the flow data back to the controller 8 for further calibrating the life attenuation of the filter element 102. By detecting the outlet water flow value at the outlet 203 by the flow sensor 5, the water quality and the operation state of the water purifier can be more comprehensively monitored in combination with the raw water conductivity value and the raw water turbidity value. Such multi-parameter data fitting may provide a more accurate analysis of the performance of the filter element 102.

It will be readily appreciated by those skilled in the art that the above advantageous ways can be freely combined and superimposed without conflict.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model. The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.

Claims (10)

1. The water purifier is characterized by comprising a filter element assembly (1), a shell (2), a conductivity sensor (3) and a turbidity sensor (4);

The filter element assembly (1) is arranged in the shell (2), a filter cavity (201) is formed between the filter element assembly (1) and the shell (2), the shell (2) is provided with a water inlet (202) and a water outlet (203), the water inlet (202) is communicated with the filter cavity (201), a filter inlet of the filter element assembly (1) is communicated with the filter cavity (201), and a filter outlet of the filter element assembly (1) is communicated with the water outlet (203);

The conductivity sensor (3) is arranged at the water inlet (202), the turbidity sensor (4) is arranged on the shell (2) or the filter element assembly (1), and the detection end of the turbidity sensor (4) is used for detecting the quality of raw water in the filtering chamber (201).

2. The water purifier according to claim 1, characterized in that a flow sensor (5) is arranged in the water outlet (203), and the inlet end of the flow sensor (5) is connected with the filtering outlet of the filter element assembly (1).

3. The water purifier according to claim 2, wherein a fixing assembly is further provided in the water outlet (203), the fixing assembly comprising a fixing member (601), the flow sensor (5) being provided in the fixing member (601).

4. A water purifier according to claim 3, wherein the flow sensor (5) is a split flow sensor, the flow sensor (5) comprises an impeller (501) and a sensing module, the impeller (501) is rotatably arranged in the fixing member (601), an inlet end of the impeller (501) is connected with a filtering outlet of the filter element assembly (1), and the sensing module is arranged on the housing (2) and is used for detecting rotation of the impeller (501).

5. The water purifier according to claim 4, wherein the fixing member (601) comprises a first sleeve (611) and a second sleeve (612), wherein adjacent ends of the first sleeve (611) and the second sleeve (612) are respectively provided with a spigot, opposite ends of the first sleeve (611) are provided with a first shaft sleeve, opposite ends of the second sleeve (612) are provided with a second shaft sleeve, and the impeller (501) is provided with a rotating shaft, and two ends of the rotating shaft are respectively inserted into the first shaft sleeve and the second shaft sleeve.

6. A water purifier according to claim 3, wherein the filtering outlet of the filter element assembly (1) is opposite to the water outlet (203), the fixing assembly further comprises a guide ring (602) and a plurality of guide ribs (603), the guide ribs (603) are arranged at intervals along the circumferential direction of the fixing piece (601), one end of each guide rib (603) is connected with the fixing piece (601), the other end of each guide rib (603) is connected with the guide ring (602), one end face of each guide ring (602) is abutted against the inner wall of the water outlet (203) or the peripheral wall of each guide ring (602) is abutted against the inner wall of the water outlet (203), and the other end face of each guide ring (602) is abutted against the outer wall of the filter element assembly (1).

7. The water purifier according to claim 1, wherein the water inlet (202) comprises a first flow passage (221) and a second flow passage (222) which are communicated with each other, one end of the first flow passage (221) facing away from the second flow passage (222) is connected with the fitting (7), the detection end of the conductivity sensor (3) extends into the first flow passage (221), one end of the second flow passage (222) facing away from the first flow passage (221) is communicated with the filtering chamber (201), and the cross section area of the second flow passage (222) is smaller than that of the first flow passage (221).

8. The water purifier according to any one of claims 1 to 7, further comprising a controller (8), wherein the conductivity sensor (3) is in telecommunication connection with the controller (8), the housing (2) is vertically arranged, the controller (8) is embedded in the top of the housing (2), the turbidity sensor (4) is arranged in the top of the housing (2), the connection end of the turbidity sensor (4) is electrically connected with the controller (8), and the detection end of the turbidity sensor (4) extends into the filtering chamber (201).

9. The water purifier according to claim 8, further comprising a display screen (9), wherein the display screen (9) is disposed on an outer wall of the housing (2), and wherein the display screen (9) is electrically connected to the controller (8).

10. The water purifier according to claim 1, characterized in that the housing (2) is provided with a sealing groove (204), a sealing ring is arranged in the sealing groove (204), and the turbidity sensor (4) is in sealing connection with the sealing groove (204) through the sealing ring.