WO2020088555A1 - 复合滤芯和具有其的水处理装置 - Google Patents

复合滤芯和具有其的水处理装置 Download PDF

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Publication number
WO2020088555A1
WO2020088555A1 PCT/CN2019/114552 CN2019114552W WO2020088555A1 WO 2020088555 A1 WO2020088555 A1 WO 2020088555A1 CN 2019114552 W CN2019114552 W CN 2019114552W WO 2020088555 A1 WO2020088555 A1 WO 2020088555A1
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WO
WIPO (PCT)
Prior art keywords
filter element
tube
water
activated carbon
water outlet
Prior art date
Application number
PCT/CN2019/114552
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English (en)
French (fr)
Inventor
李杨敏
裴清刚
Original Assignee
佛山市顺德区美的饮水机制造有限公司
美的集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201821792085.1U external-priority patent/CN209307054U/zh
Priority claimed from CN201811291606.XA external-priority patent/CN111115882B/zh
Application filed by 佛山市顺德区美的饮水机制造有限公司, 美的集团股份有限公司 filed Critical 佛山市顺德区美的饮水机制造有限公司
Publication of WO2020088555A1 publication Critical patent/WO2020088555A1/zh

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis

Definitions

  • the present application belongs to the technical field of household appliances, and in particular, relates to a composite filter element and a water treatment device having the same.
  • water treatment devices such as net drinking machines include multiple grading filter elements, which occupy a large space and have a small flux, not only occupying a large indoor space, but also bringing a large Inconvenient, and can not meet users' water needs.
  • This application aims to solve at least one of the technical problems in the prior art.
  • the present application proposes a composite filter element that integrates the filtration effect of the RO filter element assembly and the activated carbon filter element, which improves the filtration effect of the composite filter element.
  • the present application also proposes a water treatment device having the above composite filter element.
  • the composite filter element according to the embodiment of the first aspect of the present application includes: a housing, an RO filter element assembly and an activated carbon filter element, the housing is provided with a water inlet and a water outlet, the RO filter element assembly is provided in the housing, so A raw water cavity communicating with the water inlet is defined between the RO filter element assembly and the housing, a pure water cavity is defined in the RO filter element assembly, the activated carbon filter element is disposed in the pure water cavity, and the activated carbon A water outlet cavity communicating with the water outlet is defined in the filter element.
  • the composite filter element of the embodiment of the present application by setting a pure water cavity in the RO filter element assembly and setting the activated carbon filter element in the pure water cavity, not only the filtering effect of the RO filter element assembly and the activated carbon filter element can be integrated on the composite filter element, but Water quality, and can make full use of the internal space of the RO filter assembly, which can reduce the space occupied by the RO filter assembly and activated carbon filter, which provides convenience for the assembly and use of the composite filter.
  • the RO filter element assembly includes: a center tube and an RO filter membrane, the center tube is provided in the housing, and the activated carbon filter element is provided in the center tube, the center A pure water through hole is formed on the wall of the tube, the RO filter membrane is sleeved on the central tube, and the outer wall of the RO filter membrane and the inner wall of the housing define the raw water cavity.
  • the central tube includes: a surrounding plate and a lower end cover, the surrounding plate is formed in a cylindrical shape with both ends open, the pure water through hole is provided on the surrounding plate, and the RO The filter membrane is sleeved on the enclosure plate, the activated carbon filter element is provided in the enclosure plate, the lower end cover is provided in the enclosure plate and is located at a lower portion of the enclosure plate, and the lower end cover closes the The lower opening of the hoarding.
  • a support platform extending along the circumferential direction of the surrounding panel is provided on the inner wall of the surrounding panel, and the supporting platform is located at a lower portion of the surrounding panel.
  • the lower end of the activated carbon filter element stops against the support table.
  • the activated carbon filter element includes: a carbon tube and a lower end cap of the carbon tube, the upper end of the carbon tube communicates with the water outlet, and the lower end cap of the carbon tube is provided at the bottom of the carbon tube.
  • the upper surface of the lower end cover of the carbon tube seals against the lower end surface of the carbon tube and closes the lower end of the carbon tube, and the lower surface of the lower end cover of the carbon tube stops against the support platform.
  • the composite filter element further includes: an inner tube, the inner tube is provided in the RO filter element assembly, a second filter element assembly is provided in the inner tube, and a lower end of the inner tube is supported at On the support table, the activated carbon filter element is provided below the inner tube.
  • the bottom of the inner tube defines an annular groove, and the upper end of the activated carbon filter element is inserted into the annular groove.
  • the composite filter element further includes: a water outlet pipe, the water outlet is located at the top of the housing, the water outlet pipe is provided in the inner pipe and penetrates the second filter element assembly, so One end of the water outlet pipe communicates with the water outlet, and the other end communicates with the water outlet cavity.
  • a through hole communicating with the water outlet pipe and the water outlet cavity is formed at the bottom of the inner pipe.
  • the water treatment device includes the composite filter element according to the above embodiment.
  • the water treatment device of the embodiment of the present application by setting a pure water cavity in the RO filter element assembly and setting the activated carbon filter element in the pure water cavity, not only can the filtering effect of the RO filter element assembly and the activated carbon filter element be integrated on the composite filter element, but also to improve filtration After the water quality, and the internal space of the RO filter element assembly can be fully utilized, the space occupied by the RO filter element assembly and the activated carbon filter element can be reduced to facilitate the assembly of the water treatment device.
  • FIG. 1 is a schematic structural view of a composite filter element according to an embodiment of the present application.
  • FIG. 2 is a schematic structural view of a composite filter element according to another embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a central tube according to an embodiment of the present application.
  • FIG. 4 is a cross-sectional view of the center tube according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of an inner tube according to an embodiment of the present application.
  • FIG. 6 is a cross-sectional view of an activated carbon filter element according to an embodiment of the present application.
  • 101 Raw water cavity
  • 102 Pure water cavity
  • 103 Outlet cavity
  • 104 Waste water cavity
  • 105 Tap water cavity
  • 106 Second water purification cavity
  • RO filter assembly 20: RO filter assembly; 21: center tube; 211: hoarding; 212: lower end cover; 213: support table; 214: built-in filter material installation cavity; 215: pure water through hole; 22: RO filter membrane;
  • 50 second filter element assembly; 51: PAC skeleton; 52: PAC filter membrane; 53: PAC upper end cap; 54: PAC lower end cap;
  • connection should be understood in a broad sense, for example, it can be fixed connection or detachable Connected, or connected integrally; either mechanically or electrically; directly connected, or indirectly connected through an intermediary, or internally connected between two components.
  • installation should be understood in a broad sense, for example, it can be fixed connection or detachable Connected, or connected integrally; either mechanically or electrically; directly connected, or indirectly connected through an intermediary, or internally connected between two components.
  • the composite filter element 100 and the water treatment device having the same according to an embodiment of the present application will be described below with reference to FIGS. 1 to 6.
  • the composite filter element 100 includes: a housing 10, an RO filter element assembly 20 and an activated carbon filter element 30.
  • the housing 10 is provided with a water inlet 111 and a water outlet 112, the RO filter assembly 20 is provided in the housing 10, and a raw water chamber 101 communicating with the water inlet 111 is defined between the RO filter assembly 20 and the housing 10, A pure water cavity 102 is defined in the RO filter element assembly 20.
  • the water flow to be filtered enters the raw water chamber 101 through the water inlet 111 and penetrates through the RO filter element assembly 20, and the filtered water flow of the RO filter element assembly 20 enters the pure water chamber 102.
  • the activated carbon filter 30 is provided in the pure water chamber 102.
  • the activated carbon filter 30 defines a water outlet chamber 103 connected to the water outlet 112.
  • the water filtered by the RO filter assembly 20 in the pure water chamber 102 passes through the activated carbon filter 30 and enters the water outlet chamber 103. Finally, it flows out through the water outlet 112 for user reference to complete the two filtering processes of the water flow.
  • the water filtered by the RO filter element assembly 20 is weakly acidic and has a poor taste, which is not suitable for users to drink directly.
  • the filtering effect of the activated carbon filter element 30 can further improve the quality of pure water and enhance the taste of drinking water.
  • the provision of the activated carbon filter 30 in the pure water chamber 102 can further improve the degree of recombination of the composite filter 100, and enhance the filtering effect of the composite filter 100 on water flow, and compared with the provision of the RO filter assembly 20 and the activated carbon filter 30 alone Not only can simplify the water flow design of the composite filter element 100, but also reduce the volume of the composite filter element 100.
  • the composite filter element 100 of the embodiment of the present application by providing the pure water cavity 102 in the RO filter element assembly 20 and the activated carbon filter element 30 in the pure water cavity 102, not only can the RO filter element assembly 20 be integrated on the composite filter element 100
  • the filtering effect of the activated carbon filter element 30 improves the filtered water quality, and can make full use of the internal space of the RO filter element assembly 20, which can further reduce the space occupied by the RO filter element assembly 20 and the activated carbon filter element 30, for the assembly and use of the composite filter element 100 Provided convenience.
  • the housing 10 includes: a cylinder 11 and an upper cover 12, the top of the cylinder 11 (the upper surface shown in FIGS. 1 and 2) is open, an RO filter assembly 20 and an activated carbon filter Both 30 are provided in the housing 10, the upper cover 12 is detachably covered on the barrel 11 to close or open the upper surface of the barrel 11, and the water inlet 111 and the water outlet 112 are provided on the upper cover 12.
  • the RO filter element assembly 20 includes a central tube 21 and an RO filter membrane 22.
  • the central tube 21 is disposed in the housing 10 and extends in the axial direction of the housing 10.
  • the upper end of the central tube 21 is open to define a built-in filter material installation cavity 214
  • the activated carbon filter element 30 is provided in the built-in filter material installation cavity 214, a pure water through hole 215 is formed on the wall of the central tube 21 to communicate with the built-in filter material installation cavity 214, and the RO filter membrane 22 is sleeved on the central tube 21 along the center
  • the axial extension of the tube 21 defines the raw water chamber 101 by the outer wall of the RO filter membrane 22 and the inner wall of the housing 10.
  • the pure water through hole 215 penetrates the wall of the center tube 21 along the thickness direction of the wall of the center tube 21, and the water flow enters the RO filter film 22 from the lower end of the RO filter film 22, and the RO filter film 22 filters the water flow It is divided into waste water and pure water.
  • the upper cover 12 is provided with a waste water outlet 113 and a waste water chamber 104 connected to the waste water outlet 113. Waste water flows out from the upper end of the RO filter membrane 22 and is discharged through the waste water chamber 104 and the waste water outlet 113 . Pure water flows out from the inner wall of the RO filter membrane 22 and enters the pure water chamber 102 through the pure water through hole 215, and is discharged through the water outlet 112 for the user to drink.
  • the central tube 21 includes a surrounding plate 211 and a lower end cover 212.
  • the surrounding plate 211 is formed into a cylindrical shape with open ends, and the pure water through hole 215 is provided in the surrounding
  • the RO filter membrane 22 is sleeved on the surrounding board 211
  • the activated carbon filter element 30 is provided on the surrounding board 211
  • the lower end cover 212 is provided on the lower part of the surrounding board 211
  • the lower end cover 212 closes the surrounding board 211 The lower open opening.
  • the central tube 21 includes: a surrounding plate 211 and a lower end cover 212, the surrounding plate 211 is formed into a cylindrical shape with open ends, the pure water through hole 215 is provided on the surrounding plate 211, and the RO filter membrane 22 is sleeved on The enclosure 211 and the activated carbon filter element 30 are provided in the enclosure 211.
  • the lower end cover 212 is provided in the surrounding board 211 and located at the lower part of the surrounding board 211.
  • the lower end cover 212 closes the lower end opening of the surrounding board 211 and cooperates with the surrounding board 211 to define a built-in filter material installation cavity 214. That is, the center tube 21 is formed in a cylindrical shape with an open upper end and a closed lower end, and the activated carbon filter element 30 extends into the center tube 21 from the open upper end of the center tube 21.
  • the center tube 21 of the above structure is closed at the lower end, which can prevent the pure water flow from leaking from the lower end of the pure water chamber 102.
  • the inner wall of the enclosure 211 is formed with a support platform 213 projecting inward in the radial direction of the enclosure 211, the support platform 213 has an upper surface, and the support platform 213 It is located at the lower part of the surrounding board 211, and the lower end of the activated carbon filter element 30 abuts against the supporting table 213.
  • the inner diameter of the upper part of the built-in filter material installation cavity 214 is larger than the inner diameter of the lower part, and a step surface is formed in the middle.
  • the activated carbon filter element 30 is inserted into the built-in filter material installation cavity 214 from the upper end, and the lower end of the activated carbon filter element 30 is supported on the stepped surface.
  • the assembly of the activated carbon filter element 30 can be facilitated.
  • the support effect of the support table 213 on the activated carbon filter element 30 can improve the assembly stability of the activated carbon filter element 30, and can prevent
  • the activated carbon filter element 30 shakes in the built-in filter material installation cavity 214, which is beneficial to improve the filtering effect of the activated carbon filter element 30.
  • the activated carbon filter element 30 includes: a carbon tube 31 and a lower end cover 32 of the carbon tube.
  • the carbon tube 31 is formed into a tubular shape with both ends open.
  • the upper end of the carbon tube 31 communicates with the water outlet 112 and the carbon tube
  • the lower end cover 32 is provided at the bottom of the carbon tube 31, and the upper surface of the lower end cover 32 of the carbon tube seals against the lower end surface of the carbon tube 31 and closes the lower end of the carbon tube 31, preventing water flow in the pure water chamber 102 from the carbon tube 31
  • the lower end enters the water outlet cavity 103 to ensure that the water flow passes through the wall of the carbon tube 31 to further enhance the filtering effect of the activated carbon filter element 30 on the water flow.
  • the lower surface of the lower end cover 32 of the carbon tube abuts against the support table 213, the lower end of the carbon tube 31 is supported on the lower end cover 32 of the carbon tube, and the lower end cover 32 of the carbon tube is supported on the support table 213.
  • the tightness of the activated carbon filter element 30 is improved, and the force balance of the lower end of the carbon tube 31 can be ensured to prevent the carbon tube 31 from being directly supported on the support table 213 to cause damage to the carbon tube 31, which is beneficial to prolong the service life of the activated carbon filter element 30.
  • the upper end of the carbon tube 31 is provided with an upper end cap 33 of the carbon tube.
  • the upper end cap 33 of the carbon tube is stopped between the carbon tube 31 and the upper cover 12.
  • the lower surface of the upper end cap 33 of the carbon tube is sealed against the carbon tube
  • a water outlet channel connecting the inner cavity of the carbon pipe 31 and the water outlet 112 is formed on the upper end cover 33 of the carbon pipe.
  • the composite filter element 100 further includes: an inner tube 40, which is provided in the RO filter element assembly 20, that is, the inner tube 40 is provided in the center tube 21, and the inner tube 40 is provided
  • the second filter element assembly 50 which may be a PAC filter element, is formed on the upper cover 12 with a second water inlet and a second water outlet (not shown) communicating with the inner cavity of the inner tube 40, and the water flow from the second inlet
  • the water inlet enters the inner tube 40, passes through the filtering effect of the PAC filter core, and then flows out from the second water outlet.
  • the lower end of the inner tube 40 is supported on the support table 213, and the activated carbon filter element 30 is provided below the inner tube 40.
  • the inner tube 40 is supported on the support table 213, which can facilitate the assembly of the inner tube 40.
  • the supporting effect of the support table 213 on the inner tube 40 can improve the assembly stability of the inner tube 40, and can reduce the squeezing effect of the inner tube 40 on the activated carbon filter element 30 to prevent damage to the activated carbon filter element 30 caused by excessive pressure of the inner tube 40. It is beneficial to prolong the service life of the activated carbon filter element 30.
  • the supporting table 213 extends along the circumferential direction of the surrounding board 211, that is, the supporting table 213 is formed in a ring shape extending along the circumferential direction of the surrounding board 211, and the supporting table 213 may also be formed along the axial direction of the surrounding board 211
  • the lower end of the support table 213 abuts against the upper surface of the lower end cap 212 of the central tube 21, and the activated carbon filter element 30 is provided in the support table 213.
  • the tubular support platform 213 can ensure the uniformity of the inner tube 40 and prevent the inner tube 40 from being damaged or tilted due to uneven force.
  • the support platform 213, the surrounding plate 211 and the lower end cover 212 are integrally formed, that is to say, the central tube 21 is an integrally formed piece, and the integrally formed central tube 21 can enhance the connection between the supporting platform 213, the surrounding plate 211 and the lower end cover 212 Stability and connection strength, which can improve the functional stability and reliability of the center tube 21, and can eliminate the connection mechanism between the support table 213, the surrounding board 211 and the lower end cover 212, improve the center tube 21 and the composite filter 100
  • the assembly efficiency is high, and the integrally formed central tube 21 has high strength and long service life.
  • the inner tube 40 includes: an inner tube surrounding plate 41 and a lower cover plate 42.
  • the inner tube surrounding plate 41 is formed in a tubular shape sleeved on the second filter element assembly 50, and the inner tube surrounds The upper end of the plate 41 is open, the upper edge of the inner tube surrounding plate 41 is hermetically connected to the upper cover 12, and the lower cover plate 42 is connected to the lower end of the inner tube surrounding plate 41 and closes the lower end of the inner tube surrounding plate 41.
  • the inner tube 40 is formed into a cylindrical shape covering the second filter element assembly 50 from below, the lower end of the lower cover plate 42 is supported on the support table 213, and the upper end of the activated carbon filter element 30 and the lower portion of the lower cover plate 42 The surface resists and seals tightly.
  • the inner tube 40 of the above structure has a simple structure, which not only can accommodate the PAC filter element and ensure the normal operation of the PAC filter element, but also can use the lower cover plate 42 to space the PAC filter element and the activated carbon filter element 30 to prevent the PAC filter element and the activated carbon filter element 30 from interfering with each other.
  • the bottom of the inner tube 40 defines an annular groove 43, that is, the lower surface of the lower cover 42 defines an annular installation groove, and the outer diameter of the annular installation groove is equal to the outer diameter of the activated carbon filter core 30.
  • the inner diameter of the annular installation groove is equal to the inner diameter of the activated carbon filter core 30, and the upper end of the activated carbon filter core 30 is inserted into the annular installation groove.
  • the second filter element assembly 50 is a PAC filter element assembly.
  • the PAC filter element assembly includes: a PAC skeleton 51 and a PAC filter membrane 52.
  • the PAC skeleton 51 is located in the inner tube 40 and along the inner tube 40. It extends axially, and the PAC skeleton 51 is sleeved on the outlet pipe 60, and the PAC filter 52 is sleeved on the PAC skeleton 51 and extends in the axial direction of the PAC skeleton 51.
  • the PAC filter 52 is a tubular filter made of polyaluminum chloride material, and the thickness of the PAC filter 52 is greater than 10 mm.
  • the PAC filter membrane 52 is made of non-woven fabric, polypropylene layer, and carbon fiber, and has a long service life. When used in the filtration of tap water, it can initially remove sediment, rust and residual chlorine.
  • the PAC filter membrane 52 can also be made by rolling only one or two materials of the filter layer, which is not specifically limited here.
  • the PAC skeleton 51 defines a second water purification chamber 106
  • the outer wall of the PAC filter membrane 52 and the inner wall of the inner tube 40 define a tap water chamber 105
  • tap water enters the tap water chamber 105 through the second water inlet
  • the water flow passes through the PAC filter membrane 52 After filtering through the PAC filter membrane 52, it flows out from the inner wall of the PAC skeleton 51 into the second water purification chamber 106, and then flows out from the second water outlet.
  • the PAC filter membrane 52 and the PAC skeleton 51 constitute the second filter element assembly 50 and are arranged in the inner tube 40, reducing the second filter element assembly
  • the diameter of 50 can further reduce the occupied space of the second filter element assembly 50, and can reduce the volume and production material of the PAC filter membrane 52, which is beneficial to reduce costs.
  • the second filter element assembly 50 further includes: a PAC upper end cap 53 and a PAC lower end cap 54, the PAC upper end cap 53 is sleeved on the upper end of the PAC skeleton 51, and the lower surface of the PAC upper end cap 53
  • the upper end surface of the PAC filter membrane 52 is sealed and abutted
  • the lower end cap 54 of the PAC is sleeved on the lower end of the PAC skeleton 51
  • the upper surface of the lower end cap 54 of the PAC is sealed and abutted against the lower end surface of the PAC filter membrane 52.
  • the tightness of the upper and lower ends of the PAC filter 52 can be improved to prevent the water flow in the PAC filter 52 from flowing out from the upper or lower end of the PAC filter 52, which can not only prevent the water from entering the outlet water Cavity 103, and can improve the tightness of the tap water cavity 105.
  • the outer edge of the upper end cap 53 of the PAC is formed with a downwardly folded upturned edge, the inner wall of the upturned edge stops against the outer peripheral wall of the PAC filter 52, and the outer wall of the upturned edge
  • the inner wall of the inner tube 40 defines a tap water channel, and the water flow enters the tap water cavity 105 from the second water inlet through the tap water channel.
  • the outer edge of the lower end cap 54 of the PAC is formed with an upwardly folded down flange, the inner wall of the down flange is abutted against the outer circumferential wall of the PAC filter 52, and the outer wall of the down flange is sealed against the inner peripheral wall of the inner tube 40.
  • the performance of the second filter element assembly 50 can be improved, and the tightness and reliability of the tap water chamber 105 can be improved to prevent water leakage.
  • the composite filter element 100 further includes: a water outlet pipe 60.
  • the water outlet 112 is provided on the upper cover 12 and is located at the top of the housing 10, that is, the water outlet 112 is located on the inner pipe 40.
  • the activated carbon filter element 30 is located below the inner tube 40, that is to say, the outlet cavity 103 is located below the inner tube 40, the outlet tube 60 is provided in the inner tube 40 and penetrates the second filter element assembly 50, one end of the outlet tube 60 (as shown The upper end shown) communicates with the water outlet 112, and the other end (lower end as shown) communicates with the water outlet cavity 103.
  • the PAC skeleton 51 is tubular, and a plurality of holes are formed on the wall of the PAC skeleton 51 to penetrate the wall of the PAC skeleton 51 along the thickness direction of the wall of the PAC skeleton 51.
  • the water flow in the PAC filter membrane 52 can be promoted to enter the second water purification chamber 106 through the holes, and the PAC skeleton 51 is sleeved on the outlet pipe 60, which can further save the outlet pipe 60
  • the occupied space is conducive to further reducing the volume of the composite filter element 100.
  • the lower end cover 54 of the PAC can be integrally formed with the water outlet pipe 60.
  • the water circuit design of the composite filter element 100 can be simplified, and the assembly of the composite filter element 100 can be facilitated.
  • the lower end of the water outlet pipe 60 is sealed against the lower cover plate 42, and the bottom of the inner tube 40 is formed with a through hole 44 communicating with the water outlet pipe 60 and the water outlet chamber 103, that is, on the lower cover plate 42 A through hole 44 connecting the water outlet pipe 60 and the water outlet chamber 103 is formed.
  • the through hole 44 penetrates the lower cover 42 along the thickness direction of the lower cover 42.
  • An annular step 45 is formed on the upper portion of the through hole 44, and the lower end of the water outlet pipe 60 is inserted Within the annular step 45.
  • a seal ring 46 is provided between the water outlet pipe 60 and the inner wall of the through hole 44, and the seal ring 46 is sleeved on the water outlet pipe 60.
  • a water treatment device includes the composite filter element 100, the booster pump, and the tank described in the above embodiments.
  • the tank is provided with a water supply device, a water intake and a drain.
  • the composite filter 100 and the booster pump are provided in the tank.
  • the water supply device is connected to the water inlet 111 for the water treatment device.
  • the booster pump can be connected to Between the water supply device and the water inlet 111, the water inlet is connected to the water outlet 112 for the user to take water, and the water outlet is connected to the waste water outlet 113 for discharging waste water.
  • the water supply device may also be connected to the second water inlet, and the booster pump is connected between the water inlet 111 and the second water outlet, for boosting the water filtered by the second filter element assembly 50 and pumping it into the original water chamber 101
  • the water inlet is connected to the water outlet 112 for users to take water, and the water outlet is connected to the waste water outlet 113 for discharging waste water.
  • the water treatment device includes the composite filter element 100 described in the above embodiment.
  • the volume of the water treatment device can be reduced, the occupied space can be saved, and the water quality can be improved , Which provides convenience for users.

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Water Treatment By Sorption (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

一种复合滤芯(100)和具有其的水处理装置，复合滤芯(100)包括：壳体(10)、RO滤芯组件(20)和活性炭滤芯(30)，壳体(10)上设有进水口(111)和出水口(112)，RO滤芯组件(20)设在壳体内(10)，RO滤芯组件(20)与壳体(10)之间限定有连通进水口(111)的原水腔(101)，RO滤芯组件(20)内限定有纯水腔(102)，活性炭滤芯(30)设在纯水腔(102)内，活性炭滤芯(30)内限定有连通出水口(112)的出水腔(103)。

Description

复合滤芯和具有其的水处理装置
相关申请的交叉引用
本申请基于申请号为201811291606.X、申请日为2018年10月31日的中国专利申请以及申请号为201821792085.1、申请日为2018年10月31日的中国专利申请提出，并要求上述中国专利申请的优先权，上述中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请属于家用电器技术领域，具体地，涉及一种复合滤芯和具有其的水处理装置。
背景技术
相关技术中，诸如净饮机之类的水处理装置，包括多个分级滤芯，占用空间较大，而且通量较小，不仅占用了较大的室内空间，为用户使用带来了较大的不便，而且不能满足用户的用水需求。
发明内容
本申请旨在至少解决现有技术中存在的技术问题之一。
为此，本申请提出一种复合滤芯，所述复合滤芯集成了RO滤芯组件和活性炭滤芯的过滤效果，提升了复合滤芯的过滤效果。
本申请还提出一种具有上述复合滤芯的水处理装置。
根据本申请第一方面实施例的复合滤芯，包括：壳体、RO滤芯组件和活性炭滤芯，所述壳体上设有进水口和出水口，所述RO滤芯组件设在所述壳体内，所述RO滤芯组件与所述壳体之间限定有连通所述进水口的原水腔，所述RO滤芯组件内限定有纯水腔，所述活性炭滤芯设在所述纯水腔内，所述活性炭滤芯内限定有连通所述出水口的出水腔。
根据本申请实施例的复合滤芯，通过在RO滤芯组件内设置纯水腔并将活性炭滤芯设在纯水腔内，不仅可以在复合滤芯上集成RO滤芯组件和活性炭滤芯的过滤效果，提升过滤后的水质，而且可以充分利用RO滤芯组件的内部空间，进而可以减小RO滤芯组件和活性炭滤芯的占用空间，为复合滤芯的装配和使用提供了方便。
根据本申请一个实施例的复合滤芯，所述RO滤芯组件包括：中心管和RO滤膜，所述中心管设在所述壳体内，且所述活性炭滤芯设在所述中心管内，所述中心管的壁上形成有纯水通孔，所述RO滤膜套设在所述中心管上，所述RO滤膜的外壁与所述壳体的内壁限定出所述原水腔。
根据本申请的一个实施例，所述中心管包括：围板和下端盖，所述围板形成为两端敞开的筒状，所述纯水通孔设在所述围板上，所述RO滤膜套设在所述围板上，所述活性炭滤芯设在所述围板内，所述下端盖设在所述围板内且位于所述围板的下部，所述下端盖封闭所述围板的下敞开口。
根据本申请的一个实施例，所述围板的内壁上设有沿所述围板的周向延伸的支撑台，所述支撑台位于所述围板的下部。
根据本申请的一个实施例，所述活性炭滤芯的下端止抵在所述支撑台上。
根据本申请的一个实施例，所述活性炭滤芯包括：碳管和碳管下端盖，所述碳管的上端连通所述出水口，所述碳管下端盖设在所述碳管的底部，所述碳管下端盖的上表面密封抵接所述碳管的下端面并封闭所述碳管的下端，且所述碳管下端盖的下表面止抵在所述支撑台上。
根据本申请的一个实施例，所述复合滤芯还包括：内管，所述内管设在所述RO滤芯组件内，所述内管内设有第二滤芯组件，所述内管的下端支撑在所述支撑台上，所述活性炭滤芯设在所述内管下方。
根据本申请的一个实施例，所述内管的底部限定有环形槽，所述活性炭滤芯的上端插接在所述环形槽内。
根据本申请的一个实施例，所述复合滤芯还包括：出水管，所述出水口位于所述壳体的顶部，所述出水管设在所述内管内并贯穿所述第二滤芯组件，所述出水管的一端连通所述出水口，另一端连通所述出水腔。
进一步地，所述内管的底部形成有连通所述出水管和所述出水腔的通孔。
根据本申请第二方面实施例的水处理装置，包括根据上述实施例所述的复合滤芯。
根据本申请实施例的水处理装置，通过在RO滤芯组件内设置纯水腔并将活性炭滤芯设在纯水腔内，不仅可以在复合滤芯上集成RO滤芯组件和活性炭滤芯的过滤效果，提升过滤后的水质，而且可以充分利用RO滤芯组件的内部空间，进而可以减小RO滤芯组件和活性炭滤芯的占用空间，便于水处理装置的装配。
本申请的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。
附图说明
本申请的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1是根据本申请一个实施例的复合滤芯的结构示意图；
图2是根据本申请另一个实施例的复合滤芯的结构示意图；
图3是根据本申请实施例的中心管的结构示意图；
图4是根据本申请实施例的中心管的剖视图；
图5是根据本申请实施例的内管的结构示意图；
图6是根据本申请一个实施例的活性炭滤芯的剖视图。
附图标记：
100：复合滤芯；
101：原水腔；102：纯水腔；103：出水腔；104:废水腔；105：自来水腔；106：第二净水腔；
10：壳体；11：筒体；111：进水口；112：出水口；113：废水出口；12：上盖；
20：RO滤芯组件；21：中心管；211：围板；212：下端盖；213：支撑台；214：内置滤材安装腔；215：纯水通孔；22：RO滤膜；
30：活性炭滤芯；31：碳管；32：碳管下端盖；33：碳管上端盖；
40：内管；41：内管围板；42：下盖板；43：环形槽；44：通孔；45环形台阶；46：密封圈；
50：第二滤芯组件；51：PAC骨架；52：PAC滤膜；53：PAC上端盖；54：PAC下端盖；
60：出水管。
具体实施方式
下面详细描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本申请，而不能理解为对本申请的限制。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、 “宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请的描述中，除非另有说明，“多个”的含义是两个或两个以上。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
下面参考图1-图6描述根据本申请实施例的复合滤芯100和具有其的水处理装置。
如图1和图2所示，根据本申请的实施例，复合滤芯100包括：壳体10、RO滤芯组件20和活性炭滤芯30。
具体而言，壳体10上设有进水口111和出水口112，RO滤芯组件20设在壳体10内，RO滤芯组件20与壳体10之间限定有连通进水口111的原水腔101，RO滤芯组件20内限定有纯水腔102。待过滤的水流通过进水口111进入原水腔101，渗透穿过RO滤芯组件20，RO滤芯组件20过滤后的水流进入纯水腔102。
其中，活性炭滤芯30设在纯水腔102内，活性炭滤芯30内限定有连通出水口112的出水腔103，纯水腔102内经过RO滤芯组件20过滤后的水穿过活性炭滤芯30进入出水腔103，最后通过出水口112流出供用户引用，完成水流的两次过滤过程。
经过RO滤芯组件20过滤后的水呈弱酸性，且味道较差，不适宜用户直接饮用，经过活性炭滤芯30的过滤作用，可以进一步提升纯水的质量，提升了饮用水的口感。而且，将活性炭滤芯30设在纯水腔102内，可以进一步提升复合滤芯100的复合程度，提升了复合滤芯100对水流的过滤作用，而且相对于单独设置RO滤芯组件20和活性炭滤芯30而言，不仅可以简化复合滤芯100的水流设计，还能减小复合滤芯100的体积。
由此，根据本申请实施例的复合滤芯100，通过在RO滤芯组件20内设置纯水腔102并将活性炭滤芯30设在纯水腔102内，不仅可以在复合滤芯100上集成RO滤芯组件20和活性炭滤芯30的过滤效果，提升过滤后的水质，而且可以充分利用RO滤芯组件20的内部空间，进而可以减小RO滤芯组件20和活性炭滤芯30的占用空间，为复合滤 芯100的装配和使用提供了方便。
根据本申请一个实施例的复合滤芯100，壳体10包括：筒体11和上盖12，筒体11顶部(如图1和图2所示的上表面)敞开，RO滤芯组件20和活性炭滤芯30均设在壳体10内，上盖12可拆卸地罩设在筒体11上以封闭或打开筒体11的上表面，进水口111和出水口112设在上盖12上。
其中，RO滤芯组件20包括：中心管21和RO滤膜22，中心管21设在壳体10内并沿壳体10的轴向延伸，中心管21的上端敞开限定出内置滤材安装腔214，活性炭滤芯30设在内置滤材安装腔214内，中心管21的壁上形成有连通内置滤材安装腔214的纯水通孔215，RO滤膜22套设在中心管21上并沿中心管21的轴向延伸，RO滤膜22的外壁与壳体10的内壁限定出原水腔101。
其中，如图4所示，纯水通孔215沿中心管21的壁的厚度方向贯穿中心管21的壁，水流从RO滤膜22的下端进入RO滤膜22，RO滤膜22将水流过滤分成废水和纯水，如图2所示，上盖12上设有废水出口113和连通废水出口113的废水腔104，废水从RO滤膜22的上端流出并通过废水腔104和废水出口113排出。纯水从RO滤膜22的内壁流出并通过纯水通孔215进入纯水腔102，并通过出水口112排出供用户饮用。
根据本申请的一个实施例，如图3和图4所示，中心管21包括：围板211和下端盖212，围板211形成为两端敞开的筒状，纯水通孔215设在围板211上，RO滤膜22套设在围板211上，活性炭滤芯30设在围板211内，下端盖212设在围板211内且位于围板211的下部，下端盖212封闭围板211的下敞开口。
在本实施例中，中心管21包括：围板211和下端盖212，围板211形成为两端敞开的筒状，纯水通孔215设在围板211上，RO滤膜22套设在围板211，活性炭滤芯30设在围板211内。下端盖212设在围板211内且位于围板211的下部，下端盖212封闭围板211的下端敞口并与围板211配合限定出内置滤材安装腔214。也就是说，中心管21形成为上端敞开下端封闭的筒状，活性炭滤芯30从中心管21的上端敞开口伸入中心管21内。
上述结构的中心管21，下端封闭，可以防止纯水水流从纯水腔102的下端泄漏，RO滤芯组件20装配过程中，只需要注意中心管21上端的密闭性即可，而且RO滤芯组件20工作过程中外界水压较高，通过设置上述结构的中心管21可以提升RO滤芯组件20的稳定性，防止RO滤芯组件20受损影响复合滤芯100正常工作。
如图所示，如图4所示，在本实施例中，围板211的内壁形成有沿围板211的径向向内凸出的支撑台213，支撑台213具有上表面，支撑台213位于围板211的下部，且 活性炭滤芯30的下端止抵在支撑台213上。也就是说，内置滤材安装腔214的上部的内径大于下部的内径，中间形成有台阶面，活性炭滤芯30从上端插入内置滤材安装腔214，且活性炭滤芯30的下端支撑在台阶面上。
通过在围板211上设置与活性炭滤芯30配合的支撑台213，可以为活性炭滤芯30的装配提供方便，支撑台213对活性炭滤芯30的支撑作用可以提升活性炭滤芯30的装配稳定性，而且可以防止活性炭滤芯30在内置滤材安装腔214内晃动，有利于提升活性炭滤芯30的过滤效果。
如图1所示，在本实施例中，活性炭滤芯30包括：碳管31和碳管下端盖32，碳管31形成为两端敞开的管状，碳管31的上端连通出水口112，碳管下端盖32设在碳管31的底部，且碳管下端盖32的上表面密封抵接碳管31的下端面并封闭碳管31的下端，防止纯水腔102内的水流从碳管31的下端进入出水腔103，保证水流穿过碳管31的壁进而提升活性炭滤芯30对水流的过滤作用。
在一些实施例中，碳管下端盖32的下表面止抵在支撑台213上，碳管31的下端支撑在碳管下端盖32上，碳管下端盖32支撑在支撑台213上，不仅可以提升活性炭滤芯30的密闭性，而且可以保证碳管31的下端受力平衡，防止碳管31直接支撑在支撑台213上造成碳管31的损坏，有利于延长活性炭滤芯30的使用寿命。
如图2所示，碳管31的上端设有碳管上端盖33，碳管上端盖33止抵在碳管31和上盖12之间，碳管上端盖33的下表面密封抵接碳管31的上端面，碳管上端盖33上形成有连通碳管31内腔和出水口112的出水通道。
在本实施例中，如图1所示，复合滤芯100还包括：内管40，内管40设在RO滤芯组件20内也就是内管40设在中心管21内，内管40内设有第二滤芯组件50，第二滤芯组件50可以是PAC滤芯，上盖12上形成有连通内管40内腔的第二进水口和第二出水口(图未示出)，水流从第二进水口进入内管40，经过PAC滤芯的过滤作用再从第二出水口流出。通过在复合滤芯100内设置内管40，可以在内管40内部集成第二滤芯组件50，由此可以进一步提成复合滤芯100的集成程度，通过增加滤芯还可以提升复合滤芯100的净水效果。
其中，如图1所示，内管40的下端支撑在支撑台213上，活性炭滤芯30设在内管40下方，将内管40支撑在支撑台213上，可以为内管40的装配提供方便，支撑台213对内管40的支撑作用可以提升内管40的装配稳定性，而且可以降低内管40对活性炭滤芯30的挤压作用，防止内管40压力过大对活性炭滤芯30造成损坏，有利于延长活性炭滤芯30的使用寿命。
进一步地，支撑台213沿围板211的周向延伸，也就是说，支撑台213形成为沿围板211的周向延伸的环形，支撑台213也可以沿围板211的轴向延伸形成为管状，支撑台213的下端止抵中心管21的下端盖212的上表面，活性炭滤芯30设在支撑台213内。
管状支撑台213可以保证内管40的受力均匀性，防止内管40局部受力不均匀损坏或倾斜。其中，支撑台213、围板211与下端盖212一体成型，也就是说中心管21是一体成型件，一体成型的中心管21可以提升支撑台213、围板211与下端盖212之间的连接稳定性和连接强度，进而可以提升中心管21的功能稳定性和可靠性，而且可以消除支撑台213、围板211与下端盖212之间的连接机构，提升了中心管21和复合滤芯100的装配效率，而且一体成型的中心管21的强度大，使用寿命较长。
在本实施例中，如图5所示，内管40包括：内管围板41和下盖板42，内管围板41形成为套设在第二滤芯组件50上的管状，内管围板41的上端敞开，内管围板41的上端沿与上盖12密封相连，下盖板42连接在内管围板41的下端并封闭内管围板41的下端。也就是说，内管40形成为从下向上罩设在第二滤芯组件50上的筒状，下盖板42的下端支撑在支撑台213上，活性炭滤芯30的上端与下盖板42的下表面止抵且密封配合。
上述结构的内管40，结构简单，不仅可以容纳PAC滤芯并保证PAC滤芯正常运行，而且可以利用下盖板42将PAC滤芯与活性炭滤芯30间隔开，防止PAC滤芯与活性炭滤芯30相互干扰。
如图5所示，在本实施例中，内管40的底部限定有环形槽43，也就是下盖板42的下表面限定有环形安装槽，环形安装槽的外直径等于活性炭滤芯30的外直径，环形安装槽的内直径等于活性炭滤芯30的内直径，活性炭滤芯30的上端插接在环形安装槽内。
通过在下盖板42上设置环形安装槽，不仅可以为活性炭滤芯30的装配提供方便，而且可以提升活性炭滤芯30与下盖板42配合的密闭性，防止水流泄漏影响活性炭滤芯30的过滤效果。
在一些实施例中，第二滤芯组件50为PAC滤芯组件，如图1所示，PAC滤芯组件包括：PAC骨架51和PAC滤膜52，PAC骨架51位于内管40内并沿内管40的轴向延伸，且PAC骨架51套设在出水管60上，PAC滤膜52套设在PAC骨架51上并沿PAC骨架51的轴向延伸。
可选地，PAC滤膜52为聚合氯化铝材料制作而成的管状过滤件，且PAC滤膜52的 厚度大于10mm。
可选地，PAC滤膜52由无纺布、聚丙烯层、碳纤维卷制而成的卷筒，使用寿命较长。当用于自来水的过滤时，可初步去除泥沙、铁锈及余氯。当然，PAC滤膜52也可以仅由其中一种或两种材料的滤层卷制而成，这里不做具体限制。
其中，PAC骨架51内限定出第二净水腔106，PAC滤膜52外壁与内管40的内壁限定出自来水腔105，自来水通过第二进水口进入自来水腔105，水流穿过PAC滤膜52并经过PAC滤膜52的过滤作用从PAC骨架51的内壁流出进入第二净水腔106，然后从第二出水口流出。
由于PAC滤膜52的过滤效果与水流穿过PAC滤膜52的厚度有关，因此将PAC滤膜52和PAC骨架51组成第二滤芯组件50并设在内管40内，缩小了第二滤芯组件50的直径，进而可以减小第二滤芯组件50的占用空间，而且可以减小PAC滤膜52的体积和生产材料，有利于降低成本。
如图1所示，在本实施例中，第二滤芯组件50还包括：PAC上端盖53和PAC下端盖54，PAC上端盖53套设在PAC骨架51的上端，PAC上端盖53的下表面密封抵接PAC滤膜52的上端面，PAC下端盖54套设在PAC骨架51的下端，PAC下端盖54的上表面密封抵接PAC滤膜52的下端面。
通过设置PAC上端盖53和PAC下端盖54，可以提升PAC滤膜52上端和下端的密闭性，防止PAC滤膜52内的水流从PAC滤膜52的上端或下端流出，不仅可以防止水流进入出水腔103，而且可以提升自来水腔105的密闭性。
如图1所示，在本实施例中，PAC上端盖53的外周沿形成有向下翻折的上翻边，上翻边的内壁止抵PAC滤膜52的外周壁，上翻边的外壁与内管40的内壁限定有自来水通道，水流从第二进水口经过自来水通道进入自来水腔105。
PAC下端盖54的外周沿形成有向上翻折的下翻边，下翻边的内壁止抵PAC滤膜52的外周壁，下翻边的外壁密封止抵内管40的内周壁。
由此可以提升第二滤芯组件50的性能，而且可以提升自来水腔105的密闭性和可靠性，防止水流泄漏。
如图1所示，在本实施例中，复合滤芯100还包括：出水管60，出水口112设在上盖12上，位于壳体10的顶部，也就是说出水口112位于内管40的上方，活性炭滤芯30位于内管40的下方，也就是说出水腔103位于内管40的下方，出水管60设在内管40内并贯穿第二滤芯组件50，出水管60的一端(如图所示的上端)连通出水口112，另一端(如图所示的下端)连通出水腔103。
进一步地，PAC骨架51为管状，PAC骨架51的壁上形成有若干沿PAC骨架51的壁的厚度方向贯穿PAC骨架51的壁的孔。通过在PAC骨架51的壁上设置孔，可以促进PAC滤膜52内的水流穿过孔进入第二净水腔106，而且将PAC骨架51套设在出水管60上，可以进一步节省出水管60的占用空间，有利于进一步缩小复合滤芯100的体积。且PAC下端盖54可以和出水管60一体成型。
通过在复合滤芯100内设置出水管60，利用出水管60连通出水腔103和出水口112，可以简化复合滤芯100的水路设计，能够为复合滤芯100的装配提供方便。
进一步地，如图1所示，出水管60的下端密封止抵在下盖板42上，内管40的底部形成有连通出水管60和出水腔103的通孔44，也就是下盖板42上形成有连通出水管60和出水腔103的通孔44，通孔44沿下盖板42的厚度方向贯穿下盖板42，通孔44的上部形成有环形台阶45，出水管60的下端插接在环形台阶45内。
通过在内管40上设置通孔44，不仅可以保证出水管60与出水腔103连通，而且可以为出水管60的装配提供方便。其中，出水管60与通孔44的内壁之间设有密封圈46，密封圈46套设在出水管60上。
根据本申请第二方面实施例的水处理装置，包括上述实施例中描述的复合滤芯100、增压泵和箱体。
具体而言，箱体上设有供水装置、取水口和排水口，复合滤芯100和增压泵设在箱体内，其中，供水装置连通进水口111为水处理装置供水，增压泵可以连通在供水装置和进水口111之间，取水口连通出水口112为用户取水，排水口连通废水出口113用于排放废水。
此外，供水装置也可以连通第二进水口，增压泵连通在进水口111和第二出水口之间，用于将第二滤芯组件50过滤后的水增压后泵送至原水腔101内，取水口连通出水口112供用户取水，排水口连通废水出口113用于排放废水。
根据本申请第二方面的水处理装置，包括上述实施例中描述的复合滤芯100，通过采用上述实施例中的复合滤芯100，可以缩小水处理装置的体积，节省占用空间，而且可以提升出水质量，为用户使用提供了方便。
根据本申请实施例的水处理装置的其他构成以及操作对于本领域普通技术人员而言都是已知的，这里不再详细描述。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说 明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管已经示出和描述了本申请的实施例，本领域的普通技术人员可以理解：在不脱离本申请的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本申请的范围由权利要求及其等同物限定。

Claims (11)

  1. 一种复合滤芯，其特征在于，包括：
    壳体，所述壳体上设有进水口和出水口；
    RO滤芯组件，所述RO滤芯组件设在所述壳体内，所述RO滤芯组件与所述壳体之间限定有连通所述进水口的原水腔，所述RO滤芯组件内限定有纯水腔；
    活性炭滤芯，所述活性炭滤芯设在所述纯水腔内，所述活性炭滤芯内限定有连通所述出水口的出水腔。
  2. 根据权利要求1所述的复合滤芯，其特征在于，所述RO滤芯组件包括：
    中心管，所述中心管设在所述壳体内，且所述活性炭滤芯设在所述中心管内，所述中心管的壁上形成有纯水通孔；
    RO滤膜，所述RO滤膜套设在所述中心管上，所述RO滤膜的外壁与所述壳体的内壁限定出所述原水腔。
  3. 根据权利要求2所述的复合滤芯，其特征在于，所述中心管包括：
    围板，所述围板形成为两端敞开的筒状，所述纯水通孔设在所述围板上，所述RO滤膜套设在所述围板上，所述活性炭滤芯设在所述围板内；
    下端盖，所述下端盖设在所述围板内且位于所述围板的下部，所述下端盖封闭所述围板的下敞开口。
  4. 根据权利要求3所述的复合滤芯，其特征在于，所述围板的内壁上设有沿所述围板的周向延伸的支撑台，所述支撑台位于所述围板的下部。
  5. 根据权利要求4所述的复合滤芯，其特征在于，所述活性炭滤芯的下端止抵在所述支撑台上。
  6. 根据权利要求5所述的复合滤芯，其特征在于，所述活性炭滤芯包括：
    碳管，所述碳管的上端连通所述出水口；
    碳管下端盖，所述碳管下端盖设在所述碳管的底部，所述碳管下端盖的上表面密封抵接所述碳管的下端面并封闭所述碳管的下端，且所述碳管下端盖的下表面止抵在所述支撑台上。
  7. 根据权利要求4-6中任一项所述的复合滤芯，其特征在于，还包括：
    内管，所述内管设在所述RO滤芯组件内，所述内管内设有第二滤芯组件，所述内管的下端支撑在所述支撑台上，所述活性炭滤芯设在所述内管下方。
  8. 根据权利要求7所述的复合滤芯，其特征在于，所述内管的底部限定有环形槽，所 述活性炭滤芯的上端插接在所述环形槽内。
  9. 根据权利要求7或8所述的复合滤芯，其特征在于，还包括：
    出水管，所述出水口位于所述壳体的顶部，所述出水管设在所述内管内并贯穿所述第二滤芯组件，所述出水管的一端连通所述出水口，另一端连通所述出水腔。
  10. 根据权利要求9所述的复合滤芯，其特征在于，所述内管的底部形成有连通所述出水管和所述出水腔的通孔。
  11. 一种水处理装置，其特征在于，包括根据权利要求1-10中任一项所述的复合滤芯。
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