CN213387907U - Filter element assembly and water purifier with same - Google Patents

Abstract

The utility model provides a filter element group spare and purifier that has it. The filter element assembly comprises: the shell is provided with a concentrated water outlet; the reverse osmosis filter element is arranged in the shell and is provided with a concentrated water outlet end; the flow controller is arranged in the shell, the concentrated water outlet is communicated with the concentrated water outlet end through the flow controller, and the flow controller is provided with a throttling hole. Because the throttle orifice is required to be arranged on the throttle, if defective products occur in the production and manufacturing process, the throttle orifice is only required to be scrapped, and the shell of the filter element assembly is not required to be scrapped, so that the production cost of the filter element assembly can be reduced. Further, the orifice size determines the size of the filter element assembly. By installing different throttles into the filter element assembly, filter element assemblies of different specifications can be combined. And for the shell, the uniform specification can be achieved. Compared with the prior art, the manufacturing cost of the restrictor is lower than that of the shell, so that the production cost of the filter element assembly can be further reduced.

Description

Filter element assembly and water purifier with same

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 on the quality of life, the water purifier gradually enters the families of people. Reverse osmosis water purifiers are becoming more popular because the purified water produced by them is fresher, more sanitary and safer.

The reverse osmosis water purifier presses raw water into the reverse osmosis filter element at a higher pressure through the booster pump so as to filter out pure water, and the generated concentrated water is discharged from the concentrated water outlet. The concentrated water outlet is usually connected with a waste water ratio valve, and the waste water ratio valve is usually provided with a throttling hole. Therefore, high pressure can be generated inside the reverse osmosis filter element, and concentrated water can be discharged. The orifice is easy to block after long-term use, so in the prior art, in order to conveniently and regularly replace the waste water ratio valve, the waste water ratio valve is integrated with the filter element assembly, namely, the inner diameter of a concentrated water outlet on the shell of the filter element assembly is made very small to be used as the orifice.

This causes a problem that the flow ratio of concentrated water to pure water generated in the process of producing water is increased to waste water resources because the orifice is processed by precision processing, and the flow ratio of concentrated water to pure water is decreased because the orifice is too small, which results in a shortened life of the reverse osmosis filter element. In case orifice processing fails, the casing of whole filter element subassembly will be scrapped, and the production cycle of casing is long, and is with high costs, because of the processing failure of orifice, will lead to the cost-push of whole filter element subassembly, is unfavorable for reducing product cost. And, the aperture size of orifice has still decided the specification of filter element group spare, that is to say, different water purifiers can select for use the orifice of different apertures. If the orifice is placed directly on the housing, multiple sets of molds are required to make the different housings, further increasing the cost, which is not conducive to free deployment for the production of filter cartridge assemblies of various sizes.

SUMMERY OF THE UTILITY MODEL

In order to at least partially solve the problems occurring in the prior art, according to an aspect of the present invention, there is provided a filter element assembly comprising: the shell is provided with a concentrated water outlet; the reverse osmosis filter element is arranged in the shell and is provided with a concentrated water outlet end; the throttling device is arranged in the shell, the concentrated water outlet is communicated with the concentrated water outlet end through the throttling device, and a throttling hole is formed in the throttling device.

The utility model provides a filter element group spare is owing to have the flow controller, and the flow controller sets up inside the casing as solitary part, so filter element group spare is in the manufacturing process, and the flow controller can make alone. Because the throttle is required to be provided with the throttle hole, if defective products appear in the production and manufacturing process, the throttle is only required to be scrapped in order to ensure that the filter element assembly can be normally used, and a shell of the filter element assembly is not required to be scrapped, so that the production cost of the filter element assembly can be greatly reduced, and the yield of the filter element assembly is also improved. Further, the filter cartridge components may have different flux specifications for different use environments, which determine the orifice size of the orifice. By installing different throttles into the filter element assembly, filter element assemblies of different specifications can be combined. And for the shell, the uniform specification can be realized, the same set of die is used for production, and the manufacturing cost of the die is reduced. The throttleer is small in size, simple and convenient to produce and process, so that a plurality of sets of throttleers can be manufactured by using dies, and filter element assemblies with different specifications can be combined conveniently. Thereby, the production cost of the filter element assembly can be further reduced.

Illustratively, the throttler comprises a wastewater proportioner, the wastewater proportioner comprises a mounting seat and a contact pin, a through hole is formed in the mounting seat, the contact pin is inserted into the through hole, the contact pin is provided with a central hole extending along the contact pin, the central hole forms a throttling hole, the contact pin is mounted in the shell through the mounting seat, and the central hole is communicated between the concentrated water outlet and the concentrated water outlet end.

Therefore, the throttler with the structure can be used for firstly arranging the through hole capable of being filled with the contact pin on the mounting seat and then inserting the contact pin into the through hole so as to finish the assembly of the waste water proportioner. Compare and directly set up the orifice on the mount pad, its preparation degree of difficulty is low to, the contact pin belongs to accurate spare part, need use professional equipment to process, but its manufacture process is very ripe, consequently through outer processing of supporting, or direct purchase, can effectively reduce product cost, improve the yields. Furthermore, the size of the through hole on the mounting seat can be fixed, so that the through-flow capacity of the wastewater proportioner can be adjusted only by replacing the contact pins with different apertures, and filter element assemblies with different specifications are combined. And, on the maintenance waste water proportioner, only need change the contact pin can.

Illustratively, the reverse osmosis filter element has a first end and a second end along an axial direction thereof, the first end being closer to the concentrate outlet than the second end, the filter element assembly further includes a flow divider connected to the first end, the concentrate outlet being located at the second end, the flow divider dividing a concentrate channel communicating between the concentrate outlet and the concentrate outlet, and the concentrate channel being located radially outward of the flow divider and the reverse osmosis filter element and radially inward of the housing, the waste water proportioner being disposed between the flow divider and the concentrate outlet, the prongs being located at a radial edge of the mounting seat, the prongs extending between the radially outward of the flow divider and the radially inward of the housing.

Like this, because the dense water passageway is the annular between casing and reverse osmosis filter core, and the inboard of dense water passageway and casing is leaned on, so set up the contact pin at the radial edge of mount pad, more be favorable to the inside space utilization of filter element group spare. And, can not make and form the interference between contact pin and the reverse osmosis filter core, improved the integrated level of filter element group spare.

Exemplarily, be provided with the stagnant water valve in the dense water export, the mount pad is installed to the dense water export, has the depressed part in the mount pad, and the contact pin outwards extends from the bottom of depressed part, and the opening of depressed part is towards the stagnant water valve, and the stagnant water valve is at least under the on-state, and a part of stagnant water valve stretches into in the depressed part.

When the filter element assembly is installed on the water purifier, the valve core of the water stop valve is jacked up along the axial direction of the filter element assembly so as to conduct the concentrated water outlet. The valve core of the water stop valve for conducting the water gap can extend into the concave part of the mounting seat due to upward movement. The recess is used for receiving the valve core of the water stop valve. By the arrangement, a certain movement space is provided for the valve core of the water stop valve on the premise of not shortening the length of the reverse osmosis filter core and not increasing the volume of the filter core component. The using space of the reverse osmosis filter element is not influenced, and the integration level of the filter element assembly can be improved.

Illustratively, at least one part of the mounting seat extends into the concentrated water outlet, and a sealing ring is arranged between the outer side wall of the mounting seat and the inner side wall of the concentrated water outlet.

Because the waste water proportioner can be arranged in the concentrated water outlet, the waste water proportioner is more convenient to assemble and disassemble. If want to change the through-flow capacity of filter element group spare, then can be on the basis of not taking apart filter element group spare, only need take out the waste water proportioner from dense water outlet, change can.

Illustratively, the water stop valve includes a valve seat and a valve core movably mounted to the valve seat, the mounting seat abuts against the valve seat along an axial direction of the concentrated water outlet, and the valve core extends into a recessed portion of the mounting seat in a conducting state of the water stop valve.

Therefore, the valve seat of the water stop valve can play a role in preventing the waste water proportioner from falling off from a concentrated water outlet. And, because the mounting seat has the depressed part, also provide the removable space for the valve core.

Illustratively, the flow restrictor comprises a concentrate outlet cap which is hermetically covered on the concentrate outlet end of the reverse osmosis filter element, and the throttle hole is arranged on the concentrate outlet cap.

The throttleer with the setting has a simple structure, and only the throttling hole is needed to be arranged on the thick water outlet cap, so that the processing procedures of the throttleer are reduced, and the manufacturing process of the throttleer is also simplified.

Illustratively, the concentrated water outlet end is positioned at the end part of the reverse osmosis filter element in the axial direction, the concentrated water outlet cap is annular, and the concentrated water outlet cap is covered on the end part in a sealing manner.

The concentrated water outlet cap can also be used as a water flow separator to separate a raw water channel and a concentrated water channel in the filter element component, so that the number of parts is reduced. And because the throttling hole is directly arranged on the concentrated water outlet cap, the parts required by the throttling device are reduced, and all applications can be completed by only one concentrated water outlet cap.

Illustratively, the thick water outlet cap includes: the annular end wall is perpendicular to the axial direction of the reverse osmosis filter element; a first annular side wall extending from an inner periphery of the annular end wall in a first axial direction away from the concentrate outlet, the first annular side wall being sealingly connected to a center tube of the reverse osmosis cartridge; a second annular side wall extending in the first axial direction from an outer periphery of the annular end wall, the second annular side wall being sealingly connected to an outer side wall of the reverse osmosis cartridge; and a third annular side wall extending in a second axial direction from a radially intermediate portion of the annular end wall, the second axial direction being opposite to the first axial direction, the third annular side wall being connected to the housing, wherein the orifice is provided in the annular end wall between the first annular side wall and the third annular side wall.

Therefore, the filter element assembly with the arrangement can conveniently fix the concentrated water outlet cap with the shell and the reverse osmosis filter element.

Exemplarily, the flow controller comprises a ring-shaped member, the ring-shaped member is sleeved on the reverse osmosis filter element, the inner peripheral wall of the ring-shaped member is in sealing connection with the outer side wall of the reverse osmosis filter element, the outer peripheral wall of the ring-shaped member is in sealing connection with the inner side wall of the shell, and the throttling hole is formed in the ring-shaped member.

The restrictor adopts a ring-shaped element structure, and has the advantages of simple structure, convenience in processing, easiness in implementation and the like.

According to another aspect of the present invention, there is provided a water purifier, which comprises any one of the filter element assemblies.

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 an exploded view of a filter element assembly according to an exemplary embodiment of the present invention;

FIG. 2 is a cross-sectional view of the filter cartridge assembly of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIGS. 4-5 are perspective views of the wastewater proportioner of the cartridge assembly of FIG. 1 at different angles, respectively;

fig. 6 is an exploded view of a filter element assembly according to another exemplary embodiment of the present invention;

FIG. 7 is a cross-sectional view of the filter cartridge assembly of FIG. 6;

FIG. 8 is an enlarged view of a portion of FIG. 7;

FIG. 9 is a perspective view of the thick water outlet cap of the filter cartridge assembly of FIG. 6;

fig. 10 is a cross-sectional view of a filter cartridge assembly according to yet another exemplary embodiment of the present invention; and

fig. 11 is a partially enlarged view of fig. 10.

Wherein the figures include the following reference numerals:

100. 100', 100 ", filter element assembly; 101. a concentrated water channel; 200. a housing; 201. a concentrated water outlet; 300. a reverse osmosis filter element; 301. 301 ', 301' concentrated water outlet end; 310. a central tube; 401. a central bore; 402. an orifice; 410. a wastewater proportioner; 411. a mounting seat; 412. inserting a pin; 420. a concentrated water outlet cap; 421. a first annular sidewall; 422. a second annular sidewall; 423. a third annular sidewall; 424. an annular end wall; 430. a recessed portion; 440. a seal ring; 450. a concentrated water chamber; 460. an annular member; 500. a water flow divider; 600. a water stop valve; 610. a valve seat; 620. a valve core.

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 accordance with one aspect of the present invention, a filter cartridge assembly 100, as shown in fig. 1-2, is provided that includes a housing 200 and a reverse osmosis filter cartridge 300. The housing 200 is provided with a concentrate outlet 201 for discharging the concentrate generated by the filtration from the filter element assembly 100. When only the reverse osmosis filter element 300 is provided in the filter element assembly 100, the housing 200 may be provided with a raw water inlet and a pure water outlet in addition to the concentrated water outlet 201. When the filter element assembly 100 is combined with other filter elements besides the reverse osmosis filter element 300, the shell 200 can be provided with a raw water inlet and a pure water outlet besides the concentrated water outlet 201, and can be provided with water gaps of other filter elements according to requirements. The arrangement of these nozzles and cartridges is well known to those skilled in the art, as they will not be described in further detail herein.

The reverse osmosis filter cartridge 300 is disposed in the housing 200, and the reverse osmosis filter cartridge 300 is a main element of filtration. After raw water enters the reverse osmosis filter element 300, pure water generated by filtration can be discharged through the central tube and the pure water outlet in sequence, and unfiltered concentrated water is discharged through the concentrated water outlet end 301 and the concentrated water outlet 201 of the reverse osmosis filter element 300 in sequence. The concentrate outlet end 301 refers to the position of the reverse osmosis filter element 300 for discharging concentrate. Illustratively, the concentrate outlet end 301 may be disposed at an end of the reverse osmosis filter element 300 in the axial direction, or may be disposed on the outer circumferential surface of the reverse osmosis filter element 300.

The filter element assembly 100 further comprises a restrictor which is arranged in the shell 200, the restrictor can be arranged between a concentrated water outlet 201 and a concentrated water outlet end 301, the concentrated water outlet 201 is communicated with the concentrated water outlet end 301 through the restrictor, and the restrictor is provided with a restriction hole. The concentrated water discharged from the reverse osmosis filter element 300 is discharged through the concentrated water outlet end 301, the orifice and the concentrated water outlet 201 in sequence. The water flux of the throttling hole is far smaller than the water discharge amount of the concentrated water outlet end 301. When the concentrated water is discharged through the orifice, the orifice functions as a wastewater ratio, which increases the pressure in the reverse osmosis filter element 300, so that the raw water can permeate the membrane bag of the reverse osmosis filter element 300 under the pressure to prepare pure water. The function of the restrictor is the same as the function of the ratio of wastewater in the water purifier, and is well known to those skilled in the art, and will not be described in detail.

The concentrated water channel 101 can be arranged between the concentrated water outlet end 301 and the concentrated water outlet 201, and the throttler can also be arranged at any position in the concentrated water channel 101 in any form as long as the concentrated water outlet end 301 and the concentrated water outlet 201 can be separated. Hereinafter, two preferred embodiments provided by the present invention will be described.

The utility model provides a filter element group spare 100 is owing to have the flow controller, and the flow controller sets up inside casing 200 as solitary part, so filter element group spare 100 in the manufacturing process, the flow controller can make alone. Because the throttle is required to be provided with the throttle hole, if defective products occur in the production and manufacturing process, the throttle is only required to be scrapped in order to ensure that the filter element assembly can be normally used, and the shell 200 of the filter element assembly 100 is not required to be scrapped, so that the production cost of the filter element assembly 100 can be greatly reduced, and the yield of the filter element assembly 100 is also improved. Further, the cartridge assembly 100 may have different flux specifications for different use environments, which determine the orifice size. By installing different chokes into the filter element assembly 100, different sized filter element assemblies 100 can be combined. And for the shell 200, the uniform specification can be realized, the same set of die is used for production, and the manufacturing cost of the die is reduced. The throttleer is small in size, simple and convenient to produce and process, so that a plurality of sets of throttleers can be manufactured by using dies, and filter element assemblies 100 with different specifications can be combined conveniently. Thereby, the production cost of the filter element assembly 100 can be further reduced.

Illustratively, as shown in fig. 1-5, the restrictor may include a waste water proportioner 410, the waste water proportioner 410 including a mount 411 and pins 412. The mounting seat 411 is provided with a through hole, and the pin 412 is inserted into the through hole. The pin 412 has a central bore 401 extending along the pin, the central bore 401 forming an orifice. The insertion pin 412 is installed in the housing 200 through the installation seat 411, and the central hole 401 is communicated between the concentrated water outlet 201 and the concentrated water outlet end 301. Mounting bracket 411 is used to secure waste water proportioner 410 within housing 200. The pin 412 acts as a throttle. During water production, the concentrated water generated by the reverse osmosis filter element 300 can be discharged through the concentrated water outlet end 301, the central hole 401 and the concentrated water outlet 201 in sequence. When the concentrate flows to the waste water proportioner 410, the water flowing out of the waste water proportioner 410 is small because the aperture of the central hole 401 in the insertion pin 412 is small, so that high pressure is generated at the front section of the waste water proportioner 410, namely high pressure is generated in the reverse osmosis filter element 300. In one embodiment, the pins 412 may be made of metal, which prevents the central hole 401 as the throttle hole from being blocked by the scale after a long time use, and the metal may effectively prevent the scale from being generated.

Therefore, in the restrictor having this configuration, the through hole into which the pin 412 can be inserted is formed in the mounting seat 411, and the pin 412 is inserted into the through hole, thereby completing the assembly of the waste water proportioner 410. Compare and directly set up the orifice on mount pad 411, its preparation degree of difficulty is low to, contact pin 412 belongs to accurate spare part, need use professional equipment to process, but its manufacture process is very mature, consequently through outer processing of supporting, or direct purchase, can effectively reduce product cost, improves the yields. Further, the size of the through hole on the mounting seat 411 can be fixed, so that only the pins 412 with different apertures need to be replaced, the through-flow capacity of the waste water proportioner 410 can be adjusted, and filter element assemblies with different specifications can be combined. Also, only the pins 412 need to be replaced on the service waste water proportioner 410.

The reverse osmosis cartridge 300 has a first end (a lower end in fig. 2) and a second end (an upper end in fig. 2) along an axial direction thereof. The first end is closer to the concentrate outlet 201 of the housing 200 than the second end. In this case, the filter cartridge assembly 100 may also include a water flow divider 500, for example. The flow divider 500 is connected to a first end of the reverse osmosis cartridge 300 and the concentrate outlet 301 is located at a second end of the reverse osmosis cartridge 300. The water flow separator 500 may divide the concentrate passage 101. The concentrate passage 101 communicates between the concentrate outlet end 301 and the concentrate outlet 201. The concentrate passage 101 may be located radially outward of the water flow separator 500 and the reverse osmosis cartridge 300 and radially inward of the housing 200. That is, the concentrate passage 101 may be an annular cavity between the housing 200 and the reverse osmosis cartridge 300. A waste water proportioner 410 may be disposed between the water flow divider 500 and the concentrate outlet 201. Prongs 412 are located at a radial edge of the mounting seat 411, the prongs 412 extending between a radially outer side of the water flow divider 500 and a radially inner side of the housing 200. As shown, since the concentrate passage 101 is annular between the housing 200 and the reverse osmosis filter cartridge 300, and the concentrate passage 101 abuts against the inner side of the housing 200, the pins 412 are disposed at the radial edge of the mounting seat 411, which is more favorable for the utilization of the space inside the filter cartridge assembly 100. And, interference between the pins 412 and the reverse osmosis filter element 300 is not generated, and the integration level of the filter element assembly 100 is improved.

Illustratively, a water stop valve 600 is provided in the concentrate outlet 201, and as shown in fig. 3, a mounting seat 411 is mounted to the concentrate outlet 201. The mounting seat 411 has a recess 430 therein, and the pin 412 extends outward from the bottom of the recess 430, and the opening of the recess 430 faces the water stop valve 600. In at least the conducting state of the water stop valve 600, a portion of the water stop valve 600 may extend into the recess 430. The water stop valve 600 is used for automatically blocking a water gap with the water stop valve 600 when the filter element assembly 100 is detached from a water purifier or other devices, so as to prevent water in the filter element assembly 100 from flowing out. Illustratively, the water stop valve 600 may include a valve seat 610 and a valve element 620 movably mounted to the valve seat 610. Taking the water purifier as an example, when the filter element assembly 100 is installed on the water purifier, the valve core 620 of the water stop valve 600 will be jacked up along the axial direction of the filter element assembly 100 to conduct the concentrated water outlet 201. The water stop valve 600 is in its on state in the state shown in fig. 2-3. The valve core 620 of the water stop valve 600 for guiding the water gap is moved upward, so that the valve core 620 can be inserted into the recess 430 of the mounting seat 411. The recess 430 functions to receive the valve element 620 of the water stop valve 600. By this arrangement, a certain movement space can be provided for the valve core 620 of the water stop valve 600 without shortening the length of the reverse osmosis filter element 300 or increasing the volume of the filter element assembly 100. Namely, the use space of the reverse osmosis filter element 300 is not influenced, and the integration level of the filter element assembly 100 can be improved.

Illustratively, at least a portion of the mounting seat 411 of the waste water proportioner 410 extends into the concentrate outlet 201, and as shown in fig. 3, a sealing ring 440 is disposed between an outer side wall of the mounting seat 411 and an inner side wall of the concentrate outlet 201. Since waste water proportioner 410 can be installed into concentrate outlet 201, it is more convenient in terms of installation and removal of waste water proportioner 410. If the through-flow capacity of the filter element assembly 100 is changed, the waste water proportioner 410 can be drawn out from the concentrated water outlet 201 and replaced without disassembling the filter element assembly 100.

For example, the mounting seat 411 may abut against the valve seat 610 along the axial direction of the concentrated water outlet 201, and the valve core 620 may extend into the recess 430 of the mounting seat 411 when the water stop valve 600 is in the conducting state. In this way, the valve seat 610 of the stop valve 600 may function to prevent the waste water proportioner 410 from falling out of the concentrate outlet 201. Also, since the mount 411 has the recess 430, a movable space is provided for the valve core 620.

Fig. 6-7 illustrate a filter element assembly 100' according to another embodiment of the present invention. In this embodiment, the same or similar parts as those in the previous embodiment will be denoted by the same reference numerals, and further description thereof will not be repeated. In this embodiment, the restrictor may include a concentrate outlet cap 420. The concentrate outlet cap 420 is hermetically covered on the concentrate outlet end 301' of the reverse osmosis filter element 300, and the throttling hole 402 is arranged on the concentrate outlet cap 420. In the embodiment shown in the figure, a concentrate cavity 450 is formed between the concentrate outlet cap 420 and the concentrate outlet end 301 'of the reverse osmosis filter element 300, and the concentrate flows out of the concentrate outlet end 301' and then enters the concentrate cavity 450. The orifice 402 may be opened at any position of the concentrate outlet cap 420 for forming the concentrate chamber 450 as long as it can lead out the concentrate in the concentrate chamber 450 through the orifice 402.

The throttle with the arrangement has a simple structure, and only the throttle hole 402 is required to be arranged on the concentrated water outlet cap 420, so that the processing procedures of the throttle are reduced, and the manufacturing process of the throttle is simplified.

Further, as shown in fig. 7-9, the thick water outlet cap 420 includes a first annular side wall 421, a second annular side wall 422, a third annular side wall 423, and an annular end wall 424. Wherein the annular end wall 424 is perpendicular to the axial direction of the reverse osmosis cartridge 300. The first annular side wall 421 extends from the inner periphery of the annular end wall 424 in a first axial direction, which is vertically upward in the drawing, away from the concentrate outlet 201. The first annular sidewall 421 is sealingly connected to the central tube 310 of the reverse osmosis cartridge 300. The center tube 310 may be used to channel pure water filtered by the reverse osmosis filter 300. A second annular side wall 422 extends in the first axial direction from an outer periphery of the annular end wall 424, the second annular side wall 422 being sealingly connected to an outer side wall of the reverse osmosis cartridge 300. The cavity formed between the first annular side wall 421, the second annular side wall 422, the annular end wall 424 and the concentrate outlet end 301' of the reverse osmosis filter element 300 may be a concentrate cavity 450. The third annular side wall 423 extends from a radially intermediate portion of the annular end wall 424 in a second axial direction, which is opposite to the first axial direction, in a vertically downward direction in the drawing, and the third annular side wall 423 is connected to the housing 200. The space formed between the third annular side wall 423 and the center pipe 310 communicates with the concentrate outlet 201, and therefore, the throttle hole 402 is provided on the annular end wall 424 between the first annular side wall 421 and the third annular side wall 423.

Therefore, the filter element assembly 100' with the arrangement can conveniently fix the concentrated water outlet cap 420 with the shell 200 and the reverse osmosis filter element 300. Moreover, the thick water outlet cap 420 may also serve as a water flow separator for separating a raw water passage and a thick water passage within the filter cartridge assembly 100', thereby reducing the number of parts. And because the orifice 402 is directly arranged on the concentrate outlet cap 420, the required parts of the restrictor are reduced, and only one concentrate outlet cap 420 can finish all applications.

Although in the illustrated embodiment, the concentrate outlet end 301' is located at the end of the reverse osmosis filter element 300 near the concentrate outlet 201, i.e., the concentrate outlet cap 420 covers the end of the reverse osmosis filter element 300 near the concentrate outlet 201. However, in other embodiments not shown, the end of the reverse osmosis filter element 300 remote from the concentrate outlet 201 can be used as its concentrate outlet, as shown in fig. 1-2, in which case the concentrate outlet cap 420 can also cover the end of the reverse osmosis filter element 300 remote from the concentrate outlet 201. Alternatively, the outer sidewall of the reverse osmosis cartridge 300 may serve as the concentrate outlet end thereof, in which case the concentrate outlet cap may also cover the outer peripheral wall of the reverse osmosis cartridge 300. However, the thick water outlet cap at this time is substantially cylindrical, not the cap shape shown in the figure.

In another embodiment, as shown in fig. 10-11, the flow restrictor in the filter element assembly 100 "may also comprise an annular member 460. The ring member 460 fits over the reverse osmosis filter element 300. The inner peripheral wall of the ring 460 is sealingly connected to the outer side wall of the reverse osmosis cartridge 300. The outer peripheral wall of the ring member 460 is sealingly connected to the inner side wall of the housing 200. The orifice 402 is provided on the ring 460. In this embodiment, the concentrate outlet end 301 ″ of the reverse osmosis filter element 300 may be located at an end far from the concentrate outlet 201, or may be located on the outer circumferential surface of the reverse osmosis filter element 300, and after being discharged from the concentrate outlet end 301 ″ of the reverse osmosis filter element 300, the concentrate flows into the concentrate passage 101 between the reverse osmosis filter element 300 and the housing 200, and then flows to the concentrate outlet 201 through the orifice 402 provided on the ring member 460. The annular member 460 may be an annular plate or an annular cylinder as long as the orifice 402 communicating the concentrate outlet 301 ″ and the concentrate outlet 201 is provided thereon.

The restrictor adopts the structure of the annular piece 460, and has the advantages of simple structure, convenient processing, easy realization and the like.

According to another aspect of the present invention, there is provided a water purifier, wherein the water purifier comprises any one of the filter element assemblies described above.

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.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe the spatial relationship of one or more components or features shown in the figures to other components or features. It is to be understood that the spatially relative terms are intended to encompass not only the orientation of the component as depicted in the figures, but also different orientations of the component 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 (11)

1. A filter element assembly, comprising:

the device comprises a shell (200), wherein a concentrated water outlet (201) is formed in the shell;

a reverse osmosis filter element (300) disposed within the housing, the reverse osmosis filter element having a concentrate outlet end (301);

the flow controller is arranged in the shell, the concentrated water outlet is communicated with the concentrated water outlet end through the flow controller, and the flow controller is provided with a throttling hole.

2. The filter element assembly according to claim 1, wherein said flow restrictor comprises a waste water proportioner (410) comprising a mounting seat (411) provided with a through hole and a pin (412) inserted in said through hole, said pin having a central hole (401) extending along said pin, said central hole forming said flow restrictor, said pin being mounted in said housing (200) through said mounting seat and said central hole communicating between said concentrate outlet (201) and said concentrate outlet end (301).

3. The filter element assembly according to claim 2, wherein the reverse osmosis filter element (300) has a first end and a second end along its axial direction, the first end being closer to the concentrate outlet (201) than the second end, the filter element assembly further comprising a water flow divider (500) connected to the first end, the concentrate outlet (301) being located at the second end, the water flow divider dividing a concentrate channel (101) communicating between the concentrate outlet and the concentrate outlet, the concentrate channel being located radially outside the water flow divider and the reverse osmosis filter element and radially inside the housing (200), the waste water proportioner (410) being located between the water flow divider and the concentrate outlet, the pins (412) being located at a radial edge of the mounting seat (411), the insert pins extend between a radially outer side of the water flow splitter and a radially inner side of the housing.

4. The filter element assembly according to claim 2, wherein a water stop valve (600) is arranged in the concentrate outlet, the mounting seat (411) is mounted to the concentrate outlet (201), the mounting seat has a recess (430) therein, the pin (412) extends outwardly from the bottom of the recess, the opening of the recess faces the water stop valve, the water stop valve is at least in a conducting state, and a part of the water stop valve extends into the recess.

5. The filter element assembly according to claim 4, wherein at least a portion of the mounting seat (411) protrudes into the concentrate outlet (201), and wherein a sealing ring (440) is arranged between an outer side wall of the mounting seat (411) and an inner side wall of the concentrate outlet.

6. The filter element assembly according to claim 5, wherein the water stop valve (600) comprises a valve seat (610) and a valve element (620) movably mounted to the valve seat, the mounting seat (411) abutting against the valve seat in an axial direction of the concentrate outlet (201), the water stop valve being in the conducting state, the valve element protruding into the recess (430) of the mounting seat.

7. The filter element assembly according to claim 1, wherein the flow restrictor comprises a concentrate outlet cap (420) sealingly covering the concentrate outlet end (301) of the reverse osmosis filter element (300), the orifice (402) being provided on the concentrate outlet cap.

8. The filter element assembly according to claim 7, wherein the concentrate outlet end (301) is located at an axially directed end of the reverse osmosis filter element (300), the concentrate outlet cap (420) having an annular shape and sealingly covering the end.

9. The filter element assembly according to claim 8, wherein said concentrate outlet cap (420) comprises:

an annular end wall (424) perpendicular to an axial direction of the reverse osmosis cartridge (300);

a first annular side wall (421) extending from an inner periphery of the annular end wall in a first axial direction away from the concentrate outlet (201), the first annular side wall being sealingly connected to a central tube (310) of the reverse osmosis cartridge;

a second annular side wall (422) extending from an outer periphery of the annular end wall in the first axial direction, the second annular side wall sealingly connected to an outer side wall of the reverse osmosis cartridge; and

a third annular side wall (423) extending from a radial middle of the annular end wall in a second axial direction, opposite the first axial direction, the third annular side wall being connected to the housing (200),

wherein the orifice (402) is disposed on the annular end wall between the first annular sidewall and the third annular sidewall.

10. The filter element assembly according to claim 1, wherein the restrictor comprises an annular member (460) fitted over the reverse osmosis filter element (300), an inner circumferential wall of the annular member being sealingly connected to an outer side wall of the reverse osmosis filter element, an outer circumferential wall of the annular member being sealingly connected to an inner side wall of the housing (200), the restriction orifice (402) being provided on the annular member.

11. A water purification machine comprising a filter element assembly according to any one of claims 1 to 10.

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