Composite filter element and water purifier

Abstract

The application discloses a composite filter element and a water purifier, and relates to the technical field of water purifiers. The composite filter element comprises a filter element wall, the filter element wall is a hollow tubular structure, the filter element wall is in a curled state when there is no water pressure and no water is produced, and the filter element wall can automatically stretch when water pressure is produced; a front filter cavity and a rear filter cavity are arranged in the filter element wall, the front filter cavity is filled with front filter material; the rear filter cavity is filled with rear filter material, and the outlet of the front filter cavity is in communication with the inlet of the rear filter cavity; by imitating the structure of a siphon beak and dynamic changes in the feeding process, the filter element wall of the composite filter element is arranged to be in a curled state when there is no water pressure and no water is produced, and the filter element wall can automatically stretch when water pressure is produced; the automatic stretching and curling of the filter element wall realizes self-pressurization and helps remove impurities attached to the surface of the filter element; the outlet of the front filter cavity is in communication with the inlet of the rear filter cavity, so that the front filter material and the rear filter material are integrated on one filter element to form the composite filter element, water quality is improved, and space is saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water purification equipment, in particular to a composite filter element and a water purifier. BACKGROUND

[0002] In the field of kitchen appliances, the water purifier is one of the indispensable equipment in the family. The current market water purifier mainly adopts multiple filter element cylinder multi-stage filter element way to purify water quality, resulting in the whole water purifier is large in size, occupies the user's large cabinet space; due to long time use filter element surface easy to scale, affect the normal use, therefore need to clean, the existing water purifier often adopts backwashing waterway to flush, need additional backwashing waterway or take out the filter element to flush, but the operation is inconvenient, brings inconvenience to the user; and the existing filter element pressure only relies on the water pressure, the pressure is limited to affect the filtering effect. SUMMARY

[0003] The present application is to overcome the defects of large filter element volume, additional flushing waterway and insufficient pressure in the prior art, and provide a composite filter element and a water purifier.

[0004] The present application solves the above technical problems by the following technical scheme:

[0005] The present application provides a composite filter element, comprising: a filter element wall, the filter element wall is a hollow tubular structure, the filter element wall is in a curled state when there is no water pressure and no water is produced, and can automatically stretch to adapt to water flow when there is water pressure and water is produced; the filter element wall is provided with a front filter cavity and a rear filter cavity, the front filter cavity is filled with front filter material; the rear filter cavity is filled with rear filter material, and the outlet of the front filter cavity is communicated with the inlet of the rear filter cavity.

[0006] In the present application, the filter element wall is designed to be in a curled state when there is no water pressure and no water is produced, and can automatically stretch to adapt to water flow when there is water pressure and water is produced, thereby increasing the filtering surface area and improving the filtering efficiency; the design of the filter element wall can automatically adjust the shape according to the water flow speed and pressure, optimize the water flow path, and reduce the decrease of filtering efficiency caused by the change of flow rate; the automatic stretching and curling of the filter element wall also helps to remove impurities attached to the surface of the filter element, reduces the cleaning frequency of the filter element, and prolongs the service life of the filter element; the filter element wall is provided with a front filter cavity and a rear filter cavity, the front filter cavity is filled with front filter material, the rear filter cavity is filled with rear filter material, and the outlet of the front filter cavity is communicated with the inlet of the rear filter cavity, so that the front filter material and the rear filter material are integrated on one filter element, thereby forming a composite filter element; raw water is filtered by the front filter material and then enters the rear filter cavity to be filtered by the rear filter material, thereby improving the water quality while saving space.

[0007] Preferably, the filter element wall is made of shape memory material.

[0008] In the scheme, the filter core wall is made of shape memory material, and the filter core wall is stretched and curled by the shape memory material under the action of water flow to realize automatic pressurization and automatic removal of dirt on the surface of the filter material.

[0009] Preferably, the material of the filter core wall is selected according to the rated water inlet pressure and the required water production pressure to select a shape memory polymer or a shape memory alloy.

[0010] In the scheme, the shape memory polymer or shape memory alloy is selected according to the rated water inlet pressure and the required water production pressure, that is, the shape memory material with appropriate parameters is selected according to the rated water inlet pressure and the required water production pressure to realize efficient filtration under the corresponding conditions, so that the filter core can maintain good filtration effect under different water pressures, and the filtration efficiency is prevented from being reduced due to the change of water pressure.

[0011] Preferably, the filter core wall comprises a water inlet end and a water outlet end, and the outer diameter of the filter core wall gradually decreases or remains unchanged from the water inlet end to the water outlet end.

[0012] In the scheme, the outer diameter of the filter core wall gradually decreases from the water inlet end to the water outlet end, forming a structure with one end larger and the other end smaller, which on the one hand facilitates curling to reduce the volume of the filter core, and on the other hand facilitates increasing the pressure to increase the filtration efficiency; the outer diameter of the filter core wall remains unchanged from the water inlet end to the water outlet end, that is, the consistent outer diameter can ensure that the filtration area of the filter core is consistent at different positions, thereby improving the uniformity and stability of the filtration effect.

[0013] Preferably, the cross section of the filter core channel is circular or elliptical.

[0014] In the scheme, the cross section of the filter core channel is circular or elliptical, which can reduce the flow resistance, reduce the pressure drop, and improve the overall performance and filtration efficiency of the composite filter core.

[0015] Preferably, the pre-filter cavity comprises sub-cavities arranged in sequence along the water flow direction, and the sub-cavities are connected in communication, and the pre-filter material is placed in the sub-cavities and arranged in multiple stages along the water flow direction.

[0016] In the scheme, the pre-filter material is arranged in multiple stages along the water flow direction, which can gradually remove impurities in the water to improve the overall filtration efficiency; and the pre-filter material arranged in multiple stages can share the filtration load, reduce the clogging speed of each stage of filter material, and prolong the service life of the filter material.

[0017] Preferably, the pre-filter material is selected from one or more of PP cotton, activated carbon and ceramic.

[0018] In the scheme, large particle impurities, peculiar smell, residual chlorine and small particles in the water can be effectively removed to improve the purity and taste of the water and reduce the maintenance cost.

[0019] Preferably, the post-filter cavity comprises sub-cavities arranged in sequence along the water flow direction, and the post-filter is arranged in multiple stages in the sub-cavities along the water flow direction.

[0020] In this scheme, the post-filter is arranged in multiple stages along the water flow direction, which can gradually remove impurities in the water, thereby improving the overall filtration efficiency.

[0021] Preferably, the post-filter is selected from one or more of activated carbon, ultrafiltration membrane, and membrane chromatography.

[0022] In this scheme, the activated carbon can reduce the pollution of the ultrafiltration membrane, prolong the service life of the ultrafiltration membrane, and reduce the maintenance cost; the ultrafiltration membrane and the membrane chromatography can effectively remove microorganisms and specific pollutants in the water, ensure that the microbial indicators of the effluent meet the drinking water standards, and improve the purity and taste of the water quality.

[0023] The application also provides a water purifier comprising the composite filter element as described above, so that the volume of the water purifier is reduced, thereby reducing the space occupied by the water purifier in the user's cabinet, improving the water quality of the water purifier, and reducing the requirement for space of the water purifier.

[0024] The positive progress effect of the application is that the filter element wall of the composite filter element is in a curled state when there is no water pressure and no water is produced, and can automatically stretch to adapt to the water flow when there is water pressure and water is produced, thereby increasing the filtration surface area and improving the filtration efficiency; the filter element wall also dynamically stretches and curls when the water pressure dynamically changes, thereby increasing the filtration surface area, achieving the functions of self-pressurization and self-cleaning of the water pressure, and reducing the cost without the need for additional configuration of a backwashing water path, which saves space while improving the water quality. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 FIG. 1 is a structural schematic diagram of a composite filter element of an embodiment of the application when there is no water pressure and no water is produced.

[0026] Figure 2 FIG. 2 is a schematic diagram (1) of the composite filter element of the embodiment of the application when there is no water pressure and no water is produced.

[0027] Figure 3 FIG. 3 is a schematic diagram (2) of the composite filter element of the embodiment of the application when there is no water pressure and no water is produced.

[0028] Figure 4 FIG. 4 is an internal sectional view of the composite filter element of the embodiment of the application when there is no water pressure and no water is produced.

[0029] Figure 5This is a schematic diagram of the structure of a composite filter element in an embodiment of the present invention when stretched to its limit.

[0030] Figure 6 for Figure 5 Internal sectional view.

[0031] Figure 7 for Figure 5 A schematic diagram of the composite filter element from the water outlet end.

[0032] Explanation of reference numerals in the attached figures

[0033] Composite filter element 1

[0034] Filter element wall 2

[0035] Inlet end 3

[0036] Water outlet 4

[0037] 5 compartments Detailed Implementation

[0038] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0039] Siphoning mouthparts are unique to moths and butterflies of the order Lepidoptera, adapted for sucking liquid foods such as nectar and fruit juice. The outer mandibles of this mouthpart are elongated, forming a flexible and retractable proboscis. The cross-section of the outer mandibles is crescent-shaped, filled with blood, containing trachea, nerves, and short muscles extending obliquely along the walls of the outer mandibles. The two outer mandibles join on the dorsal and ventral surfaces to form the proboscis, creating the food canal. Except for the apical opening and the opening at the base of the oral cavity, the proboscis cavity is sealed, allowing only longitudinal sliding. The suction mechanism is a pharyngeal pump. The mouth is located at the base of the proboscis; normally, the proboscis is curled between the labial palps. When feeding, the proboscis extensor muscles contract, forcing some blood into the outer mandible cavity, causing the proboscis to extend. Liquid food is then drawn into the food canal through the opening of the proboscis and into the mouth. When the proboscis extensor muscles relax, the inner muscles of the outer maxilla contract, blood flows backward from the outer maxilla, and the proboscis curls. This invention draws inspiration from siphon-like mouthparts, mimicking the structural design of insect siphon-like mouthparts and combining biological and engineering principles to provide a composite filter element 1, such as... Figures 1-7 As shown, the composite filter element 1 includes: a filter element wall 2, which is a hollow tubular structure. The filter element wall 2 is in a curled state when there is no water pressure and no water production, and can automatically expand to adapt to the water flow when there is water pressure. The filter element wall 2 is provided with a pre-filter chamber and a post-filter chamber. The pre-filter chamber is filled with pre-filter media. The post-filter chamber is filled with post-filter media. The outlet of the pre-filter chamber is connected to the inlet of the post-filter chamber.

[0040] The application simulates the structure of the siphon mouth and the dynamic change in the feeding process, and sets the filter core wall 2 of the composite filter core 1 to be in a curled state when there is no water pressure and no water is produced, and to be able to automatically stretch to increase the filtering surface area and improve the filtering efficiency when there is water pressure and water is produced. The design of the filter core wall 2 can automatically adjust the shape according to the water flow speed and pressure, optimize the water flow path, and reduce the decrease of the filtering efficiency caused by the change of the flow speed. The automatic stretching and curling of the filter core wall 2 also helps to remove the impurities attached to the surface of the filter core, reduces the cleaning frequency of the filter core, and prolongs the service life of the filter core. The filter core wall 2 is provided with a front filter cavity and a rear filter cavity, the front filter cavity is filled with front filter material, the rear filter cavity is filled with rear filter material, and the outlet of the front filter cavity is communicated with the inlet of the rear filter cavity, so that the front filter material and the rear filter material are integrated on one filter core, thereby forming the composite filter core 1. The raw water is filtered by the front filter material and then enters the rear filter cavity to be filtered by the rear filter material, thereby improving the water quality and saving space.

[0041] The beak of the siphon mouth is curled and stretched by its muscles, the filter core wall 2 of the composite filter core 1 is made of shape memory material, and the filter core wall 2 is stretched and curled by the shape memory material under the action of water flow, thereby realizing automatic pressurization and automatic removal of dirt on the surface of the filter material. The material of the filter core wall 2 is selected according to the rated water inlet pressure and the required water production pressure to select a shape memory polymer or a shape memory alloy. According to the rated water inlet pressure and the required water production pressure, a shape memory material with appropriate parameters is selected to meet the corresponding conditions to realize efficient filtering, ensure that the filter core can maintain good filtering effect under different water pressures, and avoid the decrease of filtering efficiency caused by the change of water pressure.

[0042] The filter core wall 2 is made of shape memory material, and the filter core wall 2 is stretched and curled by the shape memory material under the action of water flow, thereby realizing automatic pressurization and automatic removal of dirt on the surface of the filter material. The material of the filter core wall 2 is selected according to the rated water inlet pressure and the required water production pressure to select a shape memory polymer or a shape memory alloy. According to the rated water inlet pressure and the required water production pressure, a shape memory material with appropriate parameters is selected to meet the corresponding conditions to realize efficient filtering, ensure that the filter core can maintain good filtering effect under different water pressures, and avoid the decrease of filtering efficiency caused by the change of water pressure. Figures 1-4 The composite filter core 1 is shown when there is no water pressure and no water is produced, and the filter core wall 2 is like a spiral spring, of course, other curling shapes can also be provided in other embodiments; Figure 5 、 Figure 6 The composite filter core 1 is shown when there is water pressure and water is produced, and it is in an extreme stretching state and is in a straight line type, but it does not mean that the filter core wall 2 of the composite filter core 1 is in a straight line type during the water production process, and it can stretch and bend to adapt to the water flow. The two ends of the filter core wall 2 are the water inlet end 3 and the water outlet end 4 respectively, the front filter cavity is arranged on the side close to the water inlet end 3, and the rear filter cavity is arranged on the side close to the water outlet end 4. The raw water enters the front filter cavity from the water inlet end 3, is filtered by the front filter material, enters the rear filter cavity, is filtered by the rear filter material, and then obtains clean water, which is discharged from the water outlet end 4; as Figures 4-6As shown, the outer diameter of the filter core wall 2 gradually decreases from the water inlet end 3 to the water outlet end 4, forming a structure with one end larger and one end smaller, which on the one hand facilitates curling to reduce the volume of the filter core, and on the other hand facilitates increasing the pressure to increase the filtering efficiency; of course, in other embodiments, the outer diameter of the filter core wall 2 remains consistent from the water inlet end 3 to the water outlet end 4, and the consistent outer diameter can ensure that the filtering area of the filter core is consistent at different positions, thereby improving the uniformity and stability of the filtering effect. In the figure, the cross-section of the filter core channel is circular, and of course it can also be set as an oval shape, etc., and the circular or oval cross-section of the filter core channel can reduce flow resistance, reduce pressure drop, and improve the overall performance and filtering efficiency of the filter core.

[0043] As shown in Figure 4 , Figure 6 , the pre-filter cavity includes a plurality of sub-cavities 5 arranged in sequence along the water flow direction, the plurality of sub-cavities 5 are connected, and the pre-filter material is placed in the plurality of sub-cavities 5 and arranged in multiple stages along the water flow direction. The number of sub-cavities 5 in the pre-filter cavity is not limited and is adjusted according to actual requirements. The pre-filter material is arranged in multiple stages along the water flow direction, which can gradually remove impurities in the water, thereby improving the overall filtering efficiency. The pre-filter material is selected from one or more of PP cotton, activated carbon, and ceramic, which can effectively remove large-particle impurities, odors, residual chlorine, and small particles in the water, improve the purity and taste of the water, and reduce maintenance costs.

[0044] As shown in Figure 4 , Figure 6 , the post-filter cavity includes a plurality of sub-cavities 5 arranged in sequence along the water flow direction, the plurality of sub-cavities 5 are connected, and the post-filter material is placed in the plurality of sub-cavities 5 and arranged in multiple stages along the water flow direction. The number of sub-cavities 5 in the post-filter cavity is not limited and is adjusted according to actual requirements. The post-filter material is arranged in multiple stages along the water flow direction, which can gradually remove impurities in the water, thereby improving the overall filtering efficiency. The post-filter material is selected from one or more of activated carbon, ultrafiltration membrane, and membrane chromatography, wherein the activated carbon can reduce the pollution of the ultrafiltration membrane, prolong the service life of the ultrafiltration membrane, and reduce maintenance costs; the ultrafiltration membrane and the membrane chromatography can effectively remove microorganisms and specific pollutants in the water, ensure that the microbial indicators of the outlet water meet the drinking water standards, and improve the purity and taste of the water.

[0045] The present application also provides a water purifier comprising the composite filter core 1 as described above, so that the volume of the water purifier is reduced, thereby reducing the space occupied by the water purifier in the user's cabinet, improving the water quality of the water purifier, and reducing the requirements for the placement space of the water purifier.

[0046] Although the specific embodiments of the present application have been described above, it is understood by those skilled in the art that the present application is only illustrated by way of example, and the scope of protection of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to the embodiments without departing from the principles and essence of the present application, and such changes and modifications fall within the scope of protection of the present application.

Claims

1. A composite filter cartridge, characterized by, The composite filter cartridge comprises: a filter cartridge wall, which is a hollow tubular structure, and is in a curled state when there is no water pressure and no water is produced, and can automatically stretch when there is water pressure and water is produced; the filter cartridge wall is provided with a front filter cavity and a rear filter cavity, the front filter cavity is filled with front filter material, the rear filter cavity is filled with rear filter material, the outlet of the front filter cavity is communicated with the inlet of the rear filter cavity, and the filter cartridge wall is made of shape memory material, and the shape memory material is used to realize the stretching and curling of the filter cartridge wall under the action of water flow.

2. The composite filter element of claim 1 wherein, The material of the filter cartridge wall is selected according to the rated water inlet pressure and the required water production pressure to select a shape memory polymer or a shape memory alloy.

3. The composite filter element of claim 2 wherein, The filter cartridge wall comprises a water inlet end and a water outlet end, and the outer diameter of the filter cartridge wall gradually decreases from the water inlet end to the water outlet end.

4. The composite filter element of claim 3 wherein, The cross section of the channel of the filter cartridge is circular or elliptical.

5. The composite filter element of claim 4 wherein, The front filter cavity comprises sub-cavities arranged in sequence along the water flow direction, the sub-cavities are communicated with each other, the front filter material is placed in the sub-cavities and arranged in multiple stages along the water flow direction.

6. The composite filter element of claim 5, wherein The front filter material is selected from one or more of PP cotton, activated carbon and ceramic.

7. The composite filter element of any one of claims 1-6, wherein, The rear filter cavity comprises sub-cavities arranged in sequence along the water flow direction, the sub-cavities are communicated with each other, the rear filter material is placed in the sub-cavities and arranged in multiple stages along the water flow direction.

8. The composite filter element of claim 7 wherein, The rear filter material is selected from one or more of activated carbon, ultrafiltration membrane and membrane chromatography.

9. A water purifier characterized by comprising: The composite filter cartridge comprises: a filter cartridge wall, which is a hollow tubular structure, and is in a curled state when there is no water pressure and no water is produced, and can automatically stretch when there is water pressure and water is produced; the filter cartridge wall is provided with a front filter cavity and a rear filter cavity, the front filter cavity is filled with front filter material, the rear filter cavity is filled with rear filter material, the outlet of the front filter cavity is communicated with the inlet of the rear filter cavity, and the filter cartridge wall is made of shape memory material, and the shape memory material is used to realize the stretching and curling of the filter cartridge wall under the action of water flow. The material of the filter cartridge wall is selected according to the rated water inlet pressure and the required water production pressure to select a shape memory polymer or a shape memory alloy. The filter cartridge wall comprises a water inlet end and a water outlet end, and the outer diameter of the filter cartridge wall gradually decreases from the water inlet end to the water outlet end. The cross section of the channel of the filter cartridge is circular or elliptical. The front filter cavity comprises sub-cavities arranged in sequence along the water flow direction, the sub-cavities are communicated with each other, the front filter material is placed in the sub-cavities and arranged in multiple stages along the water flow direction. The front filter material is selected from one or more of PP cotton, activated carbon and ceramic. The rear filter cavity comprises sub-cavities arranged in sequence along the water flow direction, the sub-cavities are communicated with each other, the rear filter material is placed in the sub-cavities and arranged in multiple stages along the water flow direction. The rear filter material is selected from one or more of activated carbon, ultrafiltration membrane and membrane chromatography. The composite filter cartridge comprises: a filter cartridge wall, which is a hollow tubular structure, and is in a curled state when there is no water pressure and no water is produced, and can automatically stretch when there is water pressure and water is produced; the filter cartridge wall is provided with a front filter cavity and a rear filter cavity, the front filter cavity is filled with front filter material, the rear filter cavity is filled with rear filter material, the outlet of the front filter cavity is communicated with the inlet of the rear filter cavity, and the filter cartridge wall is made of shape memory material, and the shape memory material is used to realize the stretching and curling of the filter cartridge wall under the action of water flow. The material of the filter cartridge wall is selected according to the rated water inlet pressure and the required water production pressure to select a shape memory polymer or a shape memory alloy. The filter cartridge wall comprises a water inlet end and a water outlet end, and the outer diameter of

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