CN213924139U - Filter element assembly and water purifier - Google Patents

Abstract

The utility model provides a filter element group spare and purifier. The filter element subassembly includes the casing, holds reverse osmosis filter core and the elastic sleeve in the casing, and the elastic sleeve cover is established on the lateral surface of reverse osmosis filter core, is provided with a plurality of first mouth of a river of crossing on the elastic sleeve, is provided with a plurality of second on the lateral surface of reverse osmosis filter core and crosses the mouth of a river to discharge dense water, and the mouth of a river is crossed to a plurality of seconds and a plurality of first mouth of a river of crossing staggers completely, and the elastic sleeve warp under the dense water pressure and makes a plurality of second cross the mouth of a river and a plurality of first mouth of a river intercommunication of crossing. Therefore, no matter how long the filter is in standby, ions in the concentrated water between the outer side surface of the elastic sleeve and the inner side surface of the shell cannot be diffused into the reverse osmosis filter element. Therefore, when the next water is taken, the TDS of the first cup of water taken by the user can be reduced.

Description

Filter element assembly and water purifier

Technical Field

The utility model relates to a technical field of aqueous cleaning specifically, relates to a filter element group spare and purifier that has it.

Background

With the pursuit of the public for quality of life, the water quality is getting more attention. Reverse osmosis water purifiers are becoming more popular because the purified water produced by them is fresher, more sanitary and safer.

The raw water has higher TDS (total dissolved solids) more, and the reverse osmosis filter core can block a large amount of ions in the raw water in front of the reverse osmosis membrane under the effect of the booster pump, so that the TDS of the water passing through the reverse osmosis membrane meets the standard of direct drinking water. Meanwhile, the reverse osmosis filter element can discharge concentrated water with high TDS according to a certain proportion when preparing direct drinking water. In the process of water production, although concentrated water can be discharged through a concentrated water pipeline, a small amount of concentrated water still remains in the reverse osmosis filter element before the reverse osmosis membrane after the water production is finished. After the long-time standby, according to the principle that the ion from high concentration solution to low concentration solution diffusion, the ion of the higher aquatic of TDS before the reverse osmosis membrane can be to the aquatic diffusion in the reverse osmosis membrane bag, and when the next water intaking, the TDS that the user accepted the first cup of water of getting is higher.

In order to reduce the ion concentration of the first cup of water after a long-time standby, some existing water purifiers use the technology of pure water bubble membranes, namely, the concentrated water and the raw water in the filter element assembly are replaced by the water with low TDS after the standby, so that the filter element assembly is completely filled with the water with low TDS during the standby. Like this, just need all utilize the water of low TDS of preparing in advance after the standby at every turn to replace the thick water and the raw water in the intermediate layer of between filter core and the filter flask and reverse osmosis membrane bag all, consequently need use the water of a large amount of low TDS to wash the filter core subassembly, cause the waste of water resource, also improved the energy consumption that the water of preparing the low TDS that the pure water bubble membrane was used produced. Moreover, because the amount of water required for filling with the low TDS is large, a water storage container (e.g., a pressure tank) with a large volume has to be provided in the water purifier, resulting in an increase in the volume of the water purifier.

SUMMERY OF THE UTILITY MODEL

In order to at least partially solve the problems of the prior art, according to one aspect of the present invention, a filter element assembly is provided. The filter element subassembly includes the casing, holds reverse osmosis filter core and the elastic sleeve in the casing, and the elastic sleeve cover is established on the lateral surface of reverse osmosis filter core, is provided with a plurality of first mouth of a river of crossing on the elastic sleeve, is provided with a plurality of second on the lateral surface of reverse osmosis filter core and crosses the mouth of a river to discharge dense water, and the mouth of a river is crossed to a plurality of seconds and a plurality of first mouth of a river of crossing staggers completely, and the elastic sleeve warp under the dense water pressure and makes a plurality of second cross the mouth of a river and a plurality of first mouth of a river intercommunication of crossing.

When the filter element assembly works, under the action of pressure, concentrated water passing through the second water passing port can extrude the elastic sleeve to deform, so that the elastic sleeve is separated from the outer side surface of the reverse osmosis filter element at least near the second water passing port to form a water flow channel. The concentrated water sprayed from the second water passing port can sequentially pass through the water flow channel, the first water passing port, the space between the outer side surface of the elastic sleeve and the inner side surface of the shell and the concentrated water outlet to be discharged out of the filter element assembly. The outer side surface of the elastic sleeve is spaced from the inner side surface of the shell, so that when the elastic sleeve deforms, water flow can still pass between the elastic sleeve and the shell.

When the filter element group spare was not made water, the water pressure in the reverse osmosis filter core reduced, and the elastic sleeve resumes deformation, with the laminating of the lateral surface of reverse osmosis filter core to the elastic sleeve is stopped up the second water mouth of crossing. Therefore, no matter how long the filter is in standby, ions in the concentrated water between the outer side surface of the elastic sleeve and the inner side surface of the shell cannot be diffused into the reverse osmosis filter element. Therefore, when the next water is taken, the TDS of the first cup of water taken by the user can be reduced. In addition, when adopting pure water bubble membrane technique, only need with the concentrated water before the elastic sleeve and raw water replace can, the outside surface laminating of elastic sleeve and reverse osmosis filter core and seal the second after crossing the mouth of a river, deposit the ion in the concentrated water between elastic sleeve and casing can not be to the internal diffusion of reverse osmosis filter again, consequently reduced the quantity of the water of the required low TDS of pure water bubble membrane, practiced thrift the resource, reduced the volume that adopts the water demand equipment (for example purifier) of this filter element group spare.

Illustratively, a plurality of first water passing ports are arranged around each of the plurality of second water passing ports at equal distances therefrom. After passing through the second water passing port, the concentrated water can be discharged out of the filter element assembly through the first water passing ports. Thus, the resistance to the discharge of the concentrate is smaller.

Illustratively, each of the plurality of first water passing openings has the same distance with the nearest second water passing opening. Thus, the resistance of multi-point water outlet is same, the water outlet is smooth and uniform, and the reverse osmosis filter element is beneficial to water production and flushing.

Illustratively, the plurality of second water passing openings and the plurality of first water passing openings are distributed in a matrix. This facilitates design and manufacture. Moreover, the distance between the second water passing port and the first water passing port can be controlled more conveniently during assembly, the elastic sleeve only needs to be continuously rotated towards one direction if the distance between the second water passing port and the first water passing port needs to be changed during subsequent debugging, and after adjustment, the distances between the second water passing ports and the corresponding first water passing ports can still be guaranteed to be equal.

Illustratively, the plurality of second water passing ports and the plurality of first water passing ports are completely staggered along a circumferential direction of the reverse osmosis filter element and aligned along an axial direction of the reverse osmosis filter element. Thus, the elastic sleeve and the reverse osmosis filter element are convenient to process and manufacture. And the distance between the plurality of second water passing openings and the plurality of first water passing openings can be controlled by rotating the elastic sleeve, so that the operation is simple and easy. And can guarantee that the resistance of multiple spot play water is the same, goes out water smooth and even, is favorable to the system water and the washing of reverse osmosis filter core.

Illustratively, the plurality of first water passing openings are arranged into a plurality of groups of regular polygons, the plurality of first water passing openings in each group are arranged on the vertexes of the regular polygons, and the center of the regular polygons is provided with a second water passing opening. Therefore, the resistance of multi-point water outlet can be ensured to be the same, the water outlet is smooth and uniform, and the reverse osmosis filter element is favorable for water production and flushing.

Illustratively, the regular polygon is a triangle. Like this, dense water passes through the second and crosses the mouth of a river after, can discharge outside the filter element subassembly through 3 first water mouths of crossing, dense water exhaust resistance is enough little, satisfies the user demand. Moreover, the elastic sleeve is convenient to process and manufacture.

Illustratively, the distance between the plurality of second water passing openings and the plurality of first water passing openings is between 5 and 30 millimeters, and/or the maximum dimension of each of the plurality of second water passing openings and the plurality of first water passing openings is between 3 and 7 millimeters. If the distance is too small, in order to completely stagger the second water passing opening and the first water passing opening to ensure the sealing effect, the sizes of the second water passing opening and the first water passing opening need to be made smaller, which results in increased processing difficulty. And in order to ensure the water yield, more second water passing ports and first water passing ports are needed, which further increases the processing difficulty. If the distance between the second water passing port and the first water passing port is larger, the water outlet resistance of water-requiring equipment (such as a water purifier) during operation is increased, and the normal operation of the filter element assembly is influenced. Therefore, the distance between the second water passing opening and the first water passing opening is reasonable in the range. And the first water passing port and the second water passing port with the maximum sizes are easy to process and manufacture.

Illustratively, the plurality of second water passing openings are uniformly distributed on the outer side surface of the reverse osmosis filter element, and/or the plurality of first water passing openings are uniformly distributed on the elastic sleeve. This ensures that the minimum distances between the plurality of second water passing openings and the plurality of first water passing openings are equal. Therefore, the resistance of multi-point water outlet can be ensured to be the same, the water outlet is smooth and uniform, and the reverse osmosis filter element is favorable for water production and flushing.

Illustratively, the number of the first water passing ports and the second water passing ports is the same. Like this, through rationally arranging, can make every first mouth of a river all correspond to a second mouth of a river, and the first mouth of a river of crossing that corresponds and the second is crossed the interval between the mouth of a river and is roughly equal, can guarantee from this that the multiple spot goes out that water is smooth and even, guarantees that the inside pressure of reverse osmosis filter core is unanimous, avoids producing the influence to the work of reverse osmosis filter core.

Illustratively, the reverse osmosis filter element comprises a central tube, a reverse osmosis membrane wound on the central tube and an adhesive tape wound and fixed on the outer side surface of the reverse osmosis membrane, wherein a plurality of second water passing openings are formed in the adhesive tape, and form a concentrated water outlet end of the reverse osmosis filter element. Through the arrangement, the filter element component can adopt the existing reverse osmosis filter element, thereby reducing the production cost.

According to another aspect of the utility model, still provide a purifier. The purifier includes any kind of filter element group spare as above.

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

The advantages and features of the present invention are described in detail below with reference to the accompanying drawings.

Drawings

The following drawings of the present invention are used herein as part of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions thereof, which are used to explain the principles of the invention. In the drawings, there is shown in the drawings,

FIG. 1 is a perspective view of a filter cartridge assembly according to an exemplary embodiment of the present invention with the housing removed to clearly show the interior of the filter cartridge assembly;

FIG. 2 is an exploded view of the filter element assembly shown in FIG. 1;

FIG. 3 is a perspective view of the reverse osmosis cartridge of FIG. 2;

fig. 4A and 4B are partial cross-sectional views of a filter element assembly according to an exemplary embodiment of the present invention, wherein fig. 4A is a water production stopped state and fig. 4B is a water production stopped state;

fig. 5 is a pattern of first and second overages according to an exemplary embodiment of the present invention;

fig. 6 is a schematic view of an elastic sleeve according to another exemplary embodiment of the present invention; and

fig. 7 is a schematic view of an elastic sleeve according to yet another exemplary embodiment of the present invention.

Wherein the figures include the following reference numerals:

100. a filter element assembly; 200. a reverse osmosis filter element; 210. 210' and a second water passing opening; 220. a central tube; 230. a reverse osmosis membrane; 240. an adhesive tape; 300. 300 ", 300"', elastic sleeve; 310. 310 ', 310 "', a first drainage port; 320. a water flow channel; 400. a housing.

Detailed Description

In the following description, numerous details are provided to provide a thorough understanding of the present invention. One skilled in the art, however, will understand that the following description illustrates only a preferred embodiment of the invention and that the invention may be practiced without one or more of these details. In addition, some technical features that are well known in the art are not described in detail in order to avoid obscuring the present invention.

In order to reduce the TDS of the first cup of water, the utility model provides a filter element assembly. The filter element assembly can be applied to a water purifier. Therefore, according to the utility model discloses a still provide a purifier. Water purifiers include, but are not limited to, home water purifiers and central water purifiers, among others. The filter element assembly can also be used for other water-requiring equipment if necessary. A water purifier and a filter element assembly thereof according to an embodiment of the present invention will be described in detail with reference to fig. 1-3 and fig. 4A-4B.

As shown in fig. 1-3 and 4A-4B, the cartridge assembly 100 may include a housing 400, a reverse osmosis cartridge 200, and an elastomeric sleeve 300. The reverse osmosis filter cartridge 200 may be made of a reverse osmosis membrane. Optionally, the reverse osmosis filter element 200 may also be made of a reverse osmosis membrane together with other filter materials, that is, the reverse osmosis filter element 200 is a composite filter element compounded with the reverse osmosis membrane. The reverse osmosis cartridge 200 may be housed within a housing 400. The housing 400 may be provided with a concentrate outlet (not shown), and the concentrate outlet end of the reverse osmosis filter element 200 may be disposed at the outer side of the reverse osmosis filter element 200. During the water production process, the concentrated water generated by the reverse osmosis filter element 200 can flow out to the space between the reverse osmosis filter element 200 and the casing 400 through the concentrated water outlet end, and then flow out of the filter element assembly 100 through the concentrated water outlet on the casing 400. Typically, the cartridge assembly 100 has a length in the axial direction such that concentrate is primarily retained in the annular space between the outer side of the reverse osmosis cartridge 200 and the inner side of the housing 400.

The elastic sleeve 300 may be sleeved on the outer side surface of the reverse osmosis filter element 200. The material of the elastic sheath 300 may include silica gel, Nitrile Butadiene Rubber (NBR), Ethylene Propylene Diene Monomer (EPDM) or other environment-friendly materials with elasticity. The elastic sleeve 300 may be provided with a plurality of first drainage ports 310. The plurality of first superheat ports 310 may be identical in shape or different in shape. The plurality of first superheat ports 310 may be circular, square, rectangular, and/or polygonal, etc. The plurality of first water passing holes 310 may be provided at any position on the elastic sleeve 300. The concentrate outlet end can be communicated with the concentrate outlet through a plurality of first water passing openings 310 to prevent the elastic sleeve 300 from blocking the waterway communication between the concentrate outlet and the concentrate outlet end.

In general, as shown in fig. 3, the reverse osmosis filter cartridge 200 may include a center pipe 220, a reverse osmosis membrane 230 wound around the center pipe 220, and an adhesive tape 240 wound and fixed on an outer side of the reverse osmosis membrane 230. The tape 240 forms an outer sidewall of the reverse osmosis cartridge 200. The tape 240 may be provided with a plurality of second drainage ports 210. The plurality of second concentrate inlets 210 may form a concentrate outlet end of the reverse osmosis cartridge 200. The plurality of second mold gates 210 may be the same or different in shape. The plurality of second drain openings 210 may have a circular shape, a square shape, a rectangular shape, and/or a polygonal shape, etc. The shape of the plurality of second superheat ports 210 and the shape of the plurality of first superheat ports 310 may be the same or different. The concentrated water generated in the process of producing water by the reverse osmosis membrane 230 can be discharged only through the plurality of second water passing holes 210. With this arrangement, the filter cartridge assembly 100 can be implemented with existing reverse osmosis filter cartridges, thereby reducing manufacturing costs. Of course, the plurality of second drainage ports 210 may be disposed on the reverse osmosis filter element 200 in other manners as long as the second drainage ports can serve as the concentrate outlet end of the reverse osmosis filter element 200.

Preferably, as shown in fig. 4A, the inner side of the elastic sleeve 300 may be attached to the outer side of the reverse osmosis filter cartridge 200, and the outer side of the elastic sleeve 300 is spaced apart from the inner side of the housing 400. A plurality of second water passing holes 210 may be provided on an outer side surface of the reverse osmosis filter element 200. The plurality of second drainage ports 210 may form a concentrate outlet end. In the foregoing embodiment, the outer side of the reverse osmosis filter element 200 may be understood as the tape 240. The plurality of second drain holes 210 are provided on the tape 240. The plurality of second superheat ports 210 and the plurality of first superheat ports 310 may be completely staggered. The complete misalignment means that each of the second superheat ports 210 does not overlap any of the first superheat ports 310. Moreover, since the inner side of the elastic sleeve 300 can be attached to the outer side of the reverse osmosis filter element 200, the elastic sleeve 300 can block the plurality of second water passing holes 210 when the filter element assembly 100 does not produce water. In the process of water production, the elastic sleeve 300 deforms under the pressure of the concentrated water to enable the plurality of second water passing holes 210 to be communicated with the plurality of first water passing holes 310.

As is known to those skilled in the art, raw water enters the reverse osmosis cartridge at a relatively high pressure. When the filter element assembly 100 is in operation, the concentrate passing through the second water passing port 210 may press the elastic sleeve 300 to deform under pressure, as shown in fig. 4B, thereby separating the elastic sleeve 300 from the outer side of the reverse osmosis filter element 200 at least in the vicinity of the second water passing port 210 to form a water flow passage 320. The concentrate discharged from the second water passing port 210 may be discharged to the outside of the filter element assembly 100 through the water flow passage 320, the first water passing port 310, a space between the outer surface of the elastic sleeve 300 and the inner surface of the housing 400, and a concentrate outlet in this order. Spacing the outer side of the elastomeric sleeve 300 from the inner side of the housing 400 allows for deformation of the elastomeric sleeve 300 while still allowing water flow to pass between the elastomeric sleeve 300 and the housing 400.

When filter element group spare 100 was not made water, the water pressure in the reverse osmosis filter core 200 reduced, and elastic sleeve 300 resumes deformation, with the laminating of reverse osmosis filter core 200's lateral surface to elastic sleeve 300 blocks up second water gap 210. Thus, no matter how long the reverse osmosis filter cartridge 200 is in standby, ions in the concentrated water between the outer side surface of the elastic sleeve 300 and the inner side surface of the housing 400 cannot be diffused into the reverse osmosis filter cartridge. Therefore, when the next water is taken, the TDS of the first cup of water taken by the user can be reduced. In addition, when adopting pure water bubble membrane technique, only need with the concentrated water before the elastic sleeve 300 and raw water replace can, the laminating of the lateral surface of elastic sleeve 300 and reverse osmosis filter core 200 and seal second water gap 210 back, the ion of depositing in the concentrated water between elastic sleeve 300 and casing 400 can not be to reverse osmosis filter core 200 internal diffusion again, consequently reduced the quantity of the water of the low TDS that pure water bubble membrane needs, practiced thrift the resource, reduced the volume that adopts this filter core subassembly 100 water demand equipment (for example purifier).

Preferably, the first and second water passing ports 310 and 210 may be both circular holes. Thus facilitating the manufacturing. The diameter of the circular hole may range between 1-15 mm. Further preferably, the diameter of the circular hole may range between 3-7 mm. The aperture is too small, so that the processing is inconvenient, and the water flow resistance is increased; the large aperture leads to a reduction in the number of holes per unit area, and in order to completely stagger the first water passing holes 310 and the second water passing holes 210, a sufficient distance is required between the adjacent first water passing holes 310 and between the adjacent second water passing holes 210, so that the number of holes is further reduced, which leads to uneven water flow distribution and affects the pressure distribution in the reverse osmosis filter element 200. Most preferably, the circular hole may have a diameter of 5 mm. Preferably, the number ratio of the first and second superheat ports 310 and 210 may be between 1:4 and 4: 1. More preferably, the number ratio of the first and second superheat ports 310 and 210 may be 1: 1. that is, the number of the first and second superheat ports 310 and 210 is the same. Thus, through reasonable arrangement, each first water passing port 310 can correspond to one second water passing port 210, and the distance between the corresponding first water passing port 310 and the corresponding second water passing port 210 is approximately equal, so that smooth and uniform multi-point water outlet can be ensured, the pressure inside the reverse osmosis filter element 200 is ensured to be consistent, and the influence on the work of the reverse osmosis filter element 200 is avoided.

Optionally, the first water passing port and the second water passing port can also be holes with other shapes. In the embodiment shown in fig. 6, the first drainage port 310 "of the elastic sleeve 300" may be a rectangular hole. In the embodiment shown in fig. 7, the first drainage port 310 "'on the elastic sleeve 300"' may be an elliptical hole. In other embodiments not shown, the first water passing port may also be a triangular hole, a trapezoidal hole, or the like. Similarly, the second water passing opening 210 forming the concentrate outlet end of the reverse osmosis filter element 200 can also be a rectangular opening, an elliptical opening, a triangular opening, a trapezoidal opening, and the like. And the first water passing opening and the second water passing opening can have the same shape or different shapes. In any event, the maximum dimension of each of the first and second transition ducts may be between 1-15 mm. Further preferably, the maximum dimension of each of the first and second weir may be between 3-7 mm. The first water passing port and the second water passing port with the maximum sizes are easy to machine and manufacture.

Referring back to fig. 1-3 and 4A-4B, the distance between the second and first superheat ports 210 and 310 may preferably be between 5-30 millimeters. The distance between the second superheat port 210 and the first superheat port 310 refers to a distance between the center of the second superheat port 210 to the center of the first superheat port 310. If the distance is too small, in order to completely stagger the second and first transfer ports 210 and 310 to ensure the sealing effect, the second and first transfer ports 210 and 310 need to be made smaller in size, which may result in increased difficulty in machining. Moreover, in order to ensure the water yield, more second water passing holes 210 and first water passing holes 310 need to be made, which further increases the processing difficulty. If the distance between the second water passing hole 210 and the first water passing hole 310 is large, the water outlet resistance of the water requiring equipment (such as a water purifier) during operation is increased, thereby affecting the normal operation of the filter element assembly 100. Therefore, the distance between the second superheat port 210 and the first superheat port 310 is reasonable within the above range.

Alternatively, as shown in fig. 5, a plurality of first superheat ports 310 are provided around each of the plurality of second superheat ports 210 at equal distances therefrom. Wherein, the number of the first water passing holes 310 may be 2, 3 or more. After passing through the second water passing port 210, the concentrated water may be discharged out of the filter core assembly 100 through the first water passing port 310. Thus, the resistance to the discharge of the concentrate is smaller.

Optionally, each of the plurality of first superheat ports 310 has the same distance to the nearest second superheat port 210. Therefore, the resistance of multi-point water outlet is the same, the water outlet is smooth and uniform, and the reverse osmosis filter element 200 is beneficial to water production and flushing.

In one set of embodiments, as shown in fig. 1-2, both the plurality of second superheat ports 210 and the plurality of first superheat ports 310 are distributed in a matrix. This facilitates design and manufacture. Moreover, the distance between the second water passing port 210 and the first water passing port 310 can be controlled more conveniently during assembly, if the distance between the second water passing port 210 and the first water passing port 310 needs to be changed during subsequent debugging, the elastic sleeve 300 only needs to be continuously rotated towards one direction, and after adjustment, the distances between the second water passing ports 210 and the corresponding first water passing ports 310 can still be guaranteed to be equal.

Further, as shown in fig. 1-2, the plurality of second drainage ports 210 and the plurality of first drainage ports 310 may be completely staggered along a circumferential direction of the reverse osmosis filter cartridge 200 and aligned along an axial direction of the reverse osmosis filter cartridge 200. The elastic sleeve 300 and the reverse osmosis filter element 200 are thus easy to manufacture. And the distance between the plurality of second water passing holes 210 and the plurality of first water passing holes 310 can be controlled by rotating the elastic sleeve 300, and the operation is simple and easy. And can guarantee that the resistance of multiple spot play water is the same, goes out water smooth and even, is favorable to the system water and the washing of reverse osmosis filter core 200.

Alternatively, the plurality of second drainage ports 210 and the plurality of first drainage ports 310 may be completely staggered along the axial direction of the reverse osmosis filter cartridge 200, or completely staggered in any other direction.

In another set of embodiments, as shown in fig. 5, the plurality of first drainage ports 310' may be arranged in a plurality of sets of regular polygons. The plurality of first water passing holes 310' in each group may be disposed at the vertices of a regular polygon. A second water passing opening 210' is arranged at the center of the regular polygon. Each second water passing hole 210' can be used as a water outlet point, and the arrangement can ensure that the resistance of water outlet at multiple points is the same, the water outlet is smooth and uniform, and the water preparation and flushing of the reverse osmosis filter element are facilitated.

Further, the regular polygon may be a triangle. Thus, after passing through the second water passing ports 210, the concentrated water can be discharged out of the filter element assembly 100 through the 3 first water passing ports 310, and the discharge resistance of the concentrated water is small enough to meet the use requirement. Moreover, the elastic sleeve is convenient to process and manufacture.

In still another set of embodiments, the plurality of second water flow openings can be otherwise uniformly distributed on the outer side of the reverse osmosis filter element. The plurality of first water passing holes can be uniformly distributed on the elastic sleeve in other modes. In this way, the same resistance and smooth and uniform water outlet can be ensured at multiple points, so that the reverse osmosis filter element 200 can be favorably prepared and washed.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front", "rear", "upper", "lower", "left", "right", "horizontal", "vertical", "horizontal" and "top", "bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner" and "outer" refer to the interior and exterior relative to the contours of the components themselves.

For ease of description, relative terms of regions such as "above … …", "above … …", "above … …", "above", and the like may be used herein to describe the regional positional relationship of one or more components or features with other components or features as illustrated in the figures. It is to be understood that the relative terms of the regions are intended to encompass not only the orientation of the element as depicted in the figures, but also different orientations in use or operation. For example, if an element in the drawings is turned over in its entirety, the articles "over" or "on" other elements or features will include the articles "under" or "beneath" the other elements or features. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". Further, these components or features may also be positioned at various other angles (e.g., rotated 90 degrees or other angles), all of which are intended to be encompassed herein.

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

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (12)

1. The utility model provides a filter element subassembly, filter element subassembly includes the casing and holds reverse osmosis filter core in the casing, a serial communication port, filter element subassembly still includes the elastic sleeve, the elastic sleeve cover is established on the lateral surface of reverse osmosis filter core, be provided with a plurality of first mouth of a river of crossing on the elastic sleeve, be provided with a plurality of second mouth of a river of crossing on the lateral surface of reverse osmosis filter core to discharge dense water, a plurality of second mouth of a river with a plurality of first mouth of a river stagger completely, the elastic sleeve warp under the dense water pressure and makes a plurality of second mouth of a river with a plurality of first mouth of a river intercommunication of crossing.

2. The filter element assembly according to claim 1, wherein a plurality of first drainage ports are provided around each of said plurality of second drainage ports at equal distances therefrom.

3. The filter element assembly according to claim 1, wherein each of said plurality of first water passing openings is equidistant from a nearest second water passing opening.

4. The filter element assembly according to claim 1, wherein said plurality of second drainage ports and said plurality of first drainage ports are all distributed in a matrix.

5. The filter element assembly of claim 4, wherein the plurality of second water passing ports and the plurality of first water passing ports are completely staggered along a circumferential direction of the reverse osmosis filter element and aligned along an axial direction of the reverse osmosis filter element.

6. The filter element assembly according to claim 1, wherein said plurality of first water passing openings are arranged in groups, the plurality of first water passing openings in each group being disposed at vertices of a regular polygon, a second water passing opening being disposed at a center of said regular polygon.

7. The filter element assembly according to claim 6, wherein said regular polygon is a triangle.

8. The filter element assembly according to claim 1, wherein the distance between the plurality of second drainage openings and the plurality of first drainage openings is between 5-30 mm and/or the maximum dimension of each of the plurality of second drainage openings and the plurality of first drainage openings is between 3-7 mm.

9. The filter element assembly according to claim 1, wherein the plurality of second water flow openings are evenly distributed on the outer side of the reverse osmosis filter element and/or the plurality of first water flow openings are evenly distributed on the elastic sleeve.

10. The filter element assembly according to claim 1, wherein the number of said first and second drainage ports is the same.

11. The filter element assembly according to claim 1, wherein the reverse osmosis filter element comprises a central tube, a reverse osmosis membrane wound around the central tube, and an adhesive tape wound around and fixed to an outer side surface of the reverse osmosis membrane, the adhesive tape being provided with a plurality of second water passing openings.

12. A water purification machine, characterized in that it comprises a filter element assembly according to any one of claims 1-11.

Images