Composite filter element and water purifier

Abstract

The invention discloses a composite filter element and a water purifier, the composite filter element comprises a filter element wall, the filter element wall is of a hollow tubular structure, the filter element wall is in a curled state when water is not produced without water pressure, and the filter element wall can adapt to automatic stretching of water flow when water is produced with water pressure; a front filter cavity and a rear filter cavity are formed in the filter element wall, and the front filter cavity is filled with a front filter material; the rear filter cavity is filled with a rear filter material, an outlet of the front filter cavity is communicated with an inlet of the rear filter cavity, and the filter element wall of the composite filter element is arranged to be in a curled state when water is not produced without water pressure by simulating the structure of a siphonic mouthpiece beak and dynamic changes in the feeding process, and can adapt to automatic water flow stretching when water is produced with water pressure, so that the water pressure is reduced, and the feeding efficiency is improved. The automatic stretching and curling actions of the wall of the filter element achieve automatic pressurization and meanwhile facilitate removal of impurities attached to the surface of the filter element, an outlet of the front filter cavity is communicated with an inlet of the rear filter cavity so that the front filter material and the rear filter material can be integrated on one filter element to form the composite filter element, and space is saved while the water quality is improved.

Description

Technical Field

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

[0002] In the field of kitchen appliances, water purifiers are one of the indispensable devices in the home. The water purifiers on the current market mainly use multiple filter cartridges in a multi-stage filter cartridge method to purify water quality, which results in a large volume of the entire water purifier and occupies a large space in the user's cabinet. Due to long-term use, the surface of the filter cartridge is prone to scaling, which affects normal use and needs to be cleaned. Existing water purifiers often use backwashing water channels for flushing, which requires additional backwashing water channels or the filter cartridges to be removed for flushing, but the operation is inconvenient and brings inconvenience to users. In addition, the existing filter cartridge pressure only relies on tap water pressure, and the pressure is limited, which affects the filtering effect. Summary of the invention

[0003] The present invention aims to overcome the defects of the prior art, namely, large filter element volume, need for additional flushing water circuits, and insufficient pressure, and provides a composite filter element and a water purifier.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] The present invention provides a composite filter element, comprising: a filter element wall, wherein 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 the water flow when there is water pressure to produce water; a pre-filter chamber and a post-filter chamber are arranged in the filter element wall, the pre-filter chamber is filled with a pre-filter material; the post-filter chamber is filled with a post-filter material, and the outlet of the pre-filter chamber is connected to the inlet of the post-filter chamber.

[0006] In the present solution, the filter element wall is set to be 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 to produce water, thereby increasing the filtering surface area and improving the filtering efficiency. The design of the filter element wall can automatically adjust its shape according to the water flow velocity and pressure, optimize the water flow path, and reduce the decrease in filtering efficiency caused by changes in flow velocity; the automatic stretching and curling action 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 extends the service life of the filter element; a pre-filter chamber and a post-filter chamber are arranged in the filter element wall, the pre-filter chamber is filled with pre-filter material, the post-filter chamber is filled with post-filter material, and the outlet of the pre-filter chamber is connected to the inlet of the post-filter chamber so that the pre-filter material and the post-filter material are integrated on one filter element, thereby forming a composite filter element, and the raw water is filtered by the pre-filter material and then enters the post-filter chamber and is filtered by the post-filter material, which can improve water quality while saving space.

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

[0008] In this solution, the filter element wall is made of shape memory material, and the shape memory material enables the filter element wall to stretch and curl under the action of water flow, so as to achieve automatic pressurization and automatic removal of dirt on the surface of the filter material.

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

[0010] In this solution, shape memory polymers or shape memory alloys are selected according to the rated water inlet pressure and the required water production pressure. That is, shape memory materials with appropriate parameters are selected according to the rated water inlet pressure and the required water production pressure to achieve high-efficiency filtration under corresponding conditions, ensuring that the filter element can maintain a good filtration effect under different water pressures and avoiding a decrease in filtration efficiency due to changes in 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 the same from the water inlet end to the water outlet end.

[0012] In the present solution, the outer diameter of the filter element 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 at both ends of the filter element wall. On the one hand, it is convenient to curl and reduce the volume of the filter element, and on the other hand, it is convenient to increase the pressure and increase the filtration efficiency; the outer diameter of the filter element wall remains consistent from the water inlet end to the water outlet end, that is, maintaining a consistent outer diameter can ensure that the filtration area of ​​the filter element at different positions is consistent, thereby improving the uniformity and stability of the filtration effect.

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

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

[0015] Preferably, the pre-filter chamber comprises sub-chambers arranged in sequence along the water flow direction, a plurality of the sub-chambers are interconnected, and the pre-filter materials are placed in the plurality of the sub-chambers and arranged in multiple stages along the water flow direction.

[0016] In this solution, the pre-filter materials are arranged in multiple stages along the water flow direction, which can gradually remove impurities in the water, thereby improving the overall filtration efficiency; and the multi-stage pre-filter materials can share the filtration load, reduce the clogging speed of each stage of the filter material, and extend the service life of the filter material.

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

[0018] In this solution, large particles of impurities, odor, residual chlorine and tiny particles in the water can be effectively removed, the purity and taste of the water can be improved, and maintenance costs can be reduced.

[0019] Preferably, the post-filter chamber comprises sub-chambers arranged in sequence along the water flow direction, a plurality of the sub-chambers are interconnected, and the post-filter materials are placed in the plurality of the sub-chambers and arranged in multiple stages along the water flow direction.

[0020] In this solution, the post-filter materials are 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 material is selected from one or more of activated carbon, ultrafiltration membrane, and membrane chromatography.

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

[0023] The present invention also provides a water purifier, which includes 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, while improving the water quality of the water purifier and reducing the water purifier's requirement for placement space.

[0024] The positive and progressive effects of the present invention are as follows: 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 to produce water, thereby increasing the filtration surface area and improving the filtration efficiency, and a pre-filter chamber and a post-filter chamber are formed in the filter element wall, and the pre-filter material and the post-filter material are integrated on one filter element to form a composite filter element; the filter element wall also dynamically stretches and curls when the water pressure changes dynamically, thereby increasing the filtration surface area, realizing the functions of autonomous pressurization of water pressure and self-cleaning, without the need for additional backwashing water circuits, reducing costs, that is, improving water quality while saving space. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the composite filter element according to one embodiment of the present invention when there is no water pressure and no water production.

[0026] Figure 2 FIG1 is a schematic diagram (I) of a composite filter element in one direction when there is no water pressure and no water is produced according to an embodiment of the present invention.

[0027] Figure 3 This is a schematic diagram (II) of a composite filter element in one direction when there is no water pressure and no water is produced according to an embodiment of the present invention.

[0028] Figure 4 This is an internal cross-sectional view of a composite filter element according to an embodiment of the present invention when there is no water pressure and no water is produced.

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

[0030] Figure 6 for Figure 5 Internal cross-sectional view of .

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

[0032] Description of Reference Numerals

[0033] Composite filter 1

[0034] Filter wall 2

[0035] Water inlet 3

[0036] Water outlet 4

[0037] Chamber 5 DETAILED DESCRIPTION

[0038] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0039] The siphon mouthpart is a mouthpart unique to Lepidoptera moths and butterflies, suitable for sucking liquid food such as nectar and juice. The mandibular outer lobe of this mouthpart is extended to form a curlable and elastic beak. The cross-section of the outer lobe is crescent-shaped, and the cavity is filled with blood, which contains trachea, nerves and short muscles extending obliquely along the wall of the outer lobe. The left and right outer lobe are connected on the dorsal and ventral surfaces to form a beak, forming a food tract. Except for the hole at the end and the opening at the base of the mouth, the beak cavity is sealed and can only slide longitudinally. The suction mechanism is the food sinus pharyngeal pump. The mouth is located at the base of the beak. Normally, the beak is curled between the two labial palps. When feeding, the beak extensor muscles contract, forcing part of the blood to flow into the outer lobe cavity, so the beak stretches, and liquid food is sucked into the food tract through the opening of the beak and then enters the mouth. When the beak extensor muscle relaxes, the inner muscle of the outer maxilla contracts, blood flows backward from the outer maxilla, and the beak curls. The present invention draws on the siphon mouthparts, imitates the structural design of the siphon mouthparts of insects, and combines the principles of biology and engineering to provide a composite filter element 1, such as Figure 1-Figure 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 is produced, and can automatically stretch to adapt to the water flow when there is water pressure to produce water; a pre-filter chamber and a post-filter chamber are arranged in the filter element wall 2, and the pre-filter chamber is filled with a pre-filter material; the post-filter chamber is filled with a post-filter material, and the outlet of the pre-filter chamber is connected to the inlet of the post-filter chamber.

[0040] The present invention imitates the structure of the beak of the siphon mouthpart and the dynamic changes in the feeding process, and sets the filter element wall 2 of the composite filter element 1 to be in a curled state when there is no water pressure and no water is made, and can automatically stretch to adapt to the water flow when there is water pressure to make water, thereby increasing the filtering surface area and improving the filtering efficiency. The design of the filter element wall 2 can automatically adjust the shape according to the water flow speed and pressure, optimize the water flow path, and reduce the decrease in filtering efficiency caused by the change of flow rate; the automatic stretching and curling action of the filter element wall 2 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; a pre-filter chamber and a post-filter chamber are arranged in the filter element wall 2, the pre-filter chamber is filled with a pre-filter material, the post-filter chamber is filled with a post-filter material, and the outlet of the pre-filter chamber is connected with the inlet of the post-filter chamber so that the pre-filter material and the post-filter material are integrated on a filter element, thereby forming a composite filter element 1, and the raw water is filtered by the pre-filter material and then enters the post-filter chamber and is filtered by the post-filter material, which can improve the water quality and save space at the same time.

[0041] Among them, the beak of the siphon mouthparts is curled and extended through its muscles. The filter wall 2 of the composite filter element 1 of the present invention is made of shape memory material, and the filter wall 2 is stretched and curled under the action of water flow through the shape memory material, thereby realizing automatic pressurization and automatic removal of dirt on the surface of the filter material. The material of the filter wall 2 is selected from a shape memory polymer or a shape memory alloy according to the rated water inlet pressure and the required water production pressure. 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 suitable parameters is selected according to the rated water inlet pressure and the required water production pressure to achieve high-efficiency filtration under the corresponding conditions, ensuring that the filter element can maintain a good filtration effect under different water pressures, and avoiding the decrease in filtration efficiency due to changes in water pressure.

[0042] in Figure 1-Figure 4 The composite filter element 1 is shown when there is no water pressure and no water is produced. In the figure, the filter element wall 2 is spirally shaped like a clockwork spring. Of course, in other embodiments, other curling shapes can also be set; Figure 5 , Figure 6 The composite filter element 1 is shown in an extreme extension state when water is pressed by water. It is straight, but it does not mean that the filter element wall 2 of the composite filter element 1 must be straight during the water production process. It adapts to the stretching and bending of the water flow. The two ends of the filter element wall 2 are respectively the water inlet end 3 and the water outlet end 4. The pre-filter chamber is arranged on the side close to the water inlet end 3, and the post-filter chamber is arranged on the side close to the water outlet end 4. The raw water enters the pre-filter chamber from the water inlet end 3, is filtered by the pre-filter material, and then enters the post-filter chamber. After being filtered by the post-filter material, the clean water is obtained, and the clean water is discharged from the water outlet end 4; Figure 4-Figure 6As shown, the outer diameter of the filter element wall 2 gradually decreases from the water inlet end 3 to the water outlet end 4, and a structure with one end larger and the other end smaller is formed at both ends of the filter element wall 2. On the one hand, it is convenient to curl and reduce the volume of the filter element, and on the other hand, it is convenient to increase the pressure and increase the filtration efficiency; of course, in other embodiments, the outer diameter of the filter element wall 2 is consistent from the water inlet end 3 to the water outlet end 4. Maintaining a consistent outer diameter can ensure that the filtration area of ​​the filter element at different positions is consistent, thereby improving the uniformity and stability of the filtration effect. In the figure, the cross-section of the filter element channel is circular, and of course it can also be set to an elliptical shape or other shapes. The circular or elliptical cross-section of the filter element channel can reduce the flow resistance, reduce the pressure drop, and improve the overall performance and filtration efficiency of the filter element.

[0043] like Figure 4 , Figure 6 As shown, the pre-filter chamber includes sub-chambers 5 arranged in sequence along the direction of water flow, and multiple sub-chambers 5 are connected. The pre-filter materials are placed in the multiple sub-chambers 5 and arranged in multiple stages along the direction of water flow. As for the number of sub-chambers 5 in the pre-filter chamber, there is no restriction and it is arranged according to actual requirements; the pre-filter materials are arranged in multiple stages along the direction of water flow, which can gradually remove impurities in the water, thereby improving the overall filtration efficiency; and the multi-stage pre-filter materials can share the filtration load, reduce the clogging speed of each stage of filter materials, and extend the service life of the filter materials. The pre-filter material is selected from one or more of PP cotton, activated carbon, and ceramics, which can effectively remove large particles of impurities, odors, residual chlorine and tiny particles in the water, improve the purity and taste of water quality, and reduce maintenance costs.

[0044] like Figure 4 , Figure 6 As shown, the post-filter chamber includes sub-chambers 5 arranged in sequence along the direction of water flow, and a plurality of sub-chambers 5 are interconnected, and the post-filter materials are placed in the plurality of sub-chambers 5 and arranged in multiple stages along the direction of water flow. As for the number of sub-chambers 5 in the post-filter chamber, there is no restriction and it is adjusted according to actual requirements. The post-filter materials are arranged in multiple stages along the direction of water flow, which can gradually remove impurities in the water, thereby improving the overall filtration efficiency. The post-filter material is selected from one or more of activated carbon, ultrafiltration membrane, and membrane chromatography, wherein activated carbon can reduce the pollution of ultrafiltration membrane, extend the service life of ultrafiltration membrane, and reduce maintenance costs; ultrafiltration membrane and membrane chromatography can effectively remove microorganisms and specific pollutants in water, ensure that the microbial indicators of the effluent meet the drinking water standards, and improve the purity and taste of the water quality.

[0045] The present invention also provides a water purifier, which includes the composite filter element 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, while improving the water quality of the water purifier and reducing the water purifier's requirement for placement space.

[0046] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A composite filter element, characterized in that: include: 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. When there is water pressure and water is produced, it can automatically stretch to adapt to the water flow; a pre-filter chamber and a post-filter chamber are arranged in the filter element wall, and the pre-filter chamber is filled with a pre-filter material; the post-filter chamber is filled with a post-filter material, and the outlet of the pre-filter chamber is connected to the inlet of the post-filter chamber.

2. The composite filter element according to claim 1, characterized in that: The filter element wall is made of shape memory material.

3. The composite filter element according to claim 2, characterized in that: The material of the filter element wall is selected from shape memory polymer or shape memory alloy according to the rated water inlet pressure and the required water production pressure.

4. The composite filter element according to claim 3, characterized in that: 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 the same from the water inlet end to the water outlet end.

5. The composite filter element according to claim 4, characterized in that: The cross section of the filter element channel is circular or elliptical.

6. The composite filter element according to claim 5, characterized in that: The pre-filter chamber comprises sub-chambers arranged in sequence along the water flow direction, a plurality of the sub-chambers are connected, and the pre-filter materials are placed in the plurality of the sub-chambers and arranged in multiple stages along the water flow direction.

7. The composite filter element according to claim 6, characterized in that The pre-filter material is selected from one or more of PP cotton, activated carbon, and ceramics.

8. The composite filter element according to any one of claims 1 to 7, characterized in that: The post-filter chamber comprises sub-chambers arranged in sequence along the water flow direction, a plurality of the sub-chambers are connected, and the post-filter materials are placed in the plurality of the sub-chambers and arranged in multiple stages along the water flow direction.

9. The composite filter element according to claim 8, characterized in that: The post-filter material is selected from one or more of activated carbon, ultrafiltration membrane, and membrane chromatography.

10. A water purifier, characterized in that: It comprises the composite filter element as described in any one of claims 1 to 9.

Images