WO2020088562A1 - 复合滤芯和净水器 - Google Patents

复合滤芯和净水器 Download PDF

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Publication number
WO2020088562A1
WO2020088562A1 PCT/CN2019/114560 CN2019114560W WO2020088562A1 WO 2020088562 A1 WO2020088562 A1 WO 2020088562A1 CN 2019114560 W CN2019114560 W CN 2019114560W WO 2020088562 A1 WO2020088562 A1 WO 2020088562A1
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WO
WIPO (PCT)
Prior art keywords
water
cover
waste water
outlet
inlet
Prior art date
Application number
PCT/CN2019/114560
Other languages
English (en)
French (fr)
Inventor
李杨敏
桂鹏
郑跃东
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.)
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Publication date
Priority claimed from CN201821786754.4U external-priority patent/CN209397000U/zh
Priority claimed from CN201811290834.5A external-priority patent/CN111115875A/zh
Priority claimed from CN201821786753.XU external-priority patent/CN209307048U/zh
Priority claimed from CN201811288955.6A external-priority patent/CN111115867A/zh
Priority claimed from CN201811291040.0A external-priority patent/CN111115877A/zh
Priority claimed from CN201821786336.5U external-priority patent/CN209481319U/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 WO2020088562A1 publication Critical patent/WO2020088562A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/10—Spiral-wound membrane modules
    • B01D63/101—Spiral winding

Definitions

  • This application relates to the technical field of water purification, in particular to a composite filter element and a water purifier.
  • water purification equipment uses PP cotton, activated carbon, etc. as the pre-filter element, and then connects RO filter elements, etc. in series to form a water system connected by multi-stage filter elements, and performs water purification treatment.
  • the pipeline connection of the whole system is complex, inconvenient to install and replace, and there are many risk points of multi-connector connection and water leakage.
  • the service life of multi-stage filter elements is inconsistent. There are as many as three to five filter elements that consumers need to replace. Filter elements need to be purchased frequently and replaced by professional installers. The consumer experience is poor and the overall cost is high.
  • This application aims to solve one of the technical problems in the related art at least to a certain extent.
  • an object of the present application is to propose a composite filter element, which has a simple flow channel, high efficiency and good effect in purifying water, and has a good sense of use experience.
  • Another object of the present application is to propose a water purifier having the above composite filter element.
  • a composite filter element includes: a housing provided with a raw water inlet, a pure water outlet, and a waste water outlet; a central liquid separation membrane tube group, and the central liquid separation membrane tube group is provided on the In the housing, a raw water flow channel is defined between the outer peripheral wall of the central liquid separation membrane tube group and the shell, the raw water inlet communicates with the raw water flow channel, and the central liquid separation membrane tube group includes: a central tube Group and a plurality of membrane bags, the center tube group includes a center tube and a plurality of spaced-apart waste water headers, a plurality of the waste water headers are arranged around the center pipe, and the wall of the center pipe is provided There is a filtered water inlet hole, a waste water inlet hole is provided on the wall of the waste water header, and the membrane bag has a first part located inside the central pipe group and a second part located outside the central pipe group, Each of the wastewater header and the central pipe is separated by at least one first portion of the membrane
  • the composite filter element of the embodiment of the present application through the structural design of the composite filter element, after the raw water enters the raw water flow channel, it is radially wound through the multilayer membrane module wound by the multilayer membrane bag. Most of the water flowing into the original water flow channel is distributed circumferentially and axially around the periphery of the central liquid-separating membrane tube group. During the process of circumferential and axial flow, the impurities on the membrane surface are washed away to avoid clogging of the membrane surface. After that, the raw water passes through the multilayer membrane module in the radial direction.
  • the integration of the composite filter element greatly simplifies the structure for the purification system, and when the user needs to disassemble and replace the core, the operation is convenient and the user experience is improved.
  • composite filter element according to the present application may also have the following additional technical features:
  • the central liquid separation membrane tube group is cylindrical and has a circumferential surface and an end surface at both ends in the axial direction, a raw water flow channel is defined between the circumferential surface and the inner wall of the casing, and the end surface is provided with There are filtered water outlet holes and waste water outlet holes.
  • the central liquid separation membrane tube group is encapsulated on both end surfaces except the filtered water outlet hole and the waste water outlet hole.
  • the central liquid separation membrane tube group The inside defines a filtered water circulation cavity and at least one inner flow channel. The inner end of each inner flow channel communicates with the filtered water circulation cavity. Each of the inner flow channels is away from the filtered water circulation cavity.
  • an outer flow channel is defined between different turns of the inner flow channel or between two adjacent inner flow channels, and a partition wall between the inner flow channel and the outer flow channel is at least Part is a filter membrane, the outer end of the inner flow channel is encapsulated or spaced from the raw water flow channel by the filter membrane, the outer end of the outer flow channel communicates with the raw water flow channel, and the waste water outlet corresponds to The inner end of the outer flow channel is provided, and the filtered water outlet hole is provided corresponding to the filtered water circulation cavity.
  • the central liquid-separating membrane tube group further includes a pre-filter element, the pre-filter element is in a cylindrical shape with both ends open, the pre-filter element is disposed in the inner flow channel and the outer flow On the outside of the channel, the raw water flow channel is annular and surrounds the outside of the pre-filter.
  • the housing includes a bottle body and a bottle cap, at least one end of the bottle body is open, the bottle cap is connected to the end of the bottle body to seal the bottle body, the raw water inlet, The pure water outlet and the waste water outlet are provided on the bottle cap, and the water path conversion cap group is connected between the bottle cap and the central liquid separation membrane tube group.
  • the waterway conversion cap group is encapsulated at one end of the central liquid separation membrane tube group
  • the bottle body is provided with a sealing plate
  • the sealing plate is encapsulated at the center The other end of the liquid film tube group.
  • the waterway conversion cover group includes: a waterway conversion cover, the waterway conversion cover is at an end of the central liquid separation membrane tube group, and the waterway conversion cover is provided with a connection to the wastewater A waste water inlet of the circulation cavity, and a filtered water inlet connected to the filtered water circulation cavity; a waterway conversion inner outlet cover, the waterway conversion inner outlet cover is covered on the waterway conversion inner cover, and the waterway conversion inner outlet cover and The filtered water diversion channel is defined between the waterway conversion inlet cover, the waterway conversion inner outlet cover is provided with an inner cover port connected to the pure water outlet; the waterway conversion outer outlet cover, the waterway conversion outer outlet cover Covered on the water channel conversion inner outlet cover, the outer periphery of the water channel conversion outer outlet cover is connected to the water channel conversion inlet cover, the water channel conversion outer outlet cover, the water channel conversion inner outlet cover and the water channel conversion inlet cover
  • the wastewater diversion channel is defined therebetween, and an outer cover port connecting the wastewater outlet is defined between the water channel conversion outer cover
  • the side of the waterway conversion cover facing the central liquid separation membrane tube group is provided with a waste water connection pipe and a filtered water connection pipe, the waste water connection pipe port is the waste water inlet, and the filtered water connection pipe Is the inlet of the filtered water.
  • the central pipe is plugged on the filtered water pipe, there are a plurality of waste water pipes, and a plurality of the waste water headers are inserted into the plurality of waste water pipes in a one-to-one correspondence.
  • the waterway conversion inlet cover includes: an inlet half cylinder, the inlet half cylinder is opened at an end toward the central liquid separation membrane tube group, and the waste water inlet and the filtered water inlet are provided On the inlet half cylinder, one end of the central liquid separation membrane tube group is fitted on the inner circumference side of the inlet half cylinder, and the water path conversion outer cover is connected to the inlet half cylinder Outer peripheral side; the outlet half-cylinder, the outlet half-cylinder is open at the end away from the central liquid separation membrane tube group, the outlet half-cylinder and the inlet half-cylinder are spaced apart,
  • the inner cover of the waterway conversion is connected to the peripheral wall of the outlet half-cylinder body, the outlet half-cylinder body is provided with a filtered water outlet; the cylinder body is connected to the pipe, and the cylinder body is connected to the inlet end half Between the cylinder and the outlet half cylinder, one end of the cylinder connecting pipe is connected to the filtered water inlet, and the other end is connected to the filtered water outlet.
  • the bottle cap is provided with an internal connecting pipe and an external connecting pipe, the external connecting pipe is sheathed on the internal connecting pipe, the water passage conversion inner outlet cover is connected to the internal connecting pipe, and the water passage conversion outer outlet cover Connected to the external pipe.
  • the waterway conversion outgoing cover forms an outer end tube at an end away from the central liquid separation membrane tube group, the outer end tube is sleeved on the outer tube, the outer end tube and the outer An outer sealing ring is provided between the connecting pipes; the inner outlet cover of the waterway conversion is formed at an end away from the central liquid separation membrane tube group, and the inner end pipe is sleeved on the inner connecting pipe, the inner An inner seal ring is provided between the end tube and the inner connecting tube.
  • the inner cover of the waterway conversion is welded and connected to the inlet cover of the waterway conversion, and the outer cover of the waterway conversion is adhesively connected to the inlet cover of the waterway conversion.
  • the inlet half cylinder, the outlet half cylinder and the cylinder connecting pipe are an integrally formed piece.
  • the radial dimension of the inlet half cylinder is larger than the radial dimension of the outlet half cylinder.
  • the filtered water diversion channel is coaxially arranged with the central liquid separation membrane tube group, and the waste water diversion channel is sheathed on the outside of the filtered water diversion channel.
  • the post-filter element is a cake-shaped or rod-shaped carbon core.
  • the housing includes a bottle body and a bottle cap, the bottle cap is closed on the cover body, the central liquid separation membrane tube group is provided in the bottle body, and the waterway conversion cap group is connected On the bottle cap, the waterway conversion cap group is rotatable relative to the bottle cap.
  • a plurality of the membrane bags are spirally wound in the same direction to form a multilayer film assembly, the wall of the membrane bag is the filter membrane, and the interior of the membrane bag forms the inner flow path , The outer flow channel is formed between adjacent membrane bags; a pre-filter cartridge is rolled on the multilayer film assembly.
  • the water purifier according to the embodiment of the present application includes: a composite filter element, the composite filter element is the aforementioned composite filter element; a water inlet pipe, the water inlet pipe is connected to the raw water inlet on the housing; a waste water pipe, the waste water A pipe is connected to the waste water outlet on the casing; a pure water pipe is connected to the pure water outlet on the casing; a booster pump is connected in series to the inlet Water pipe; Water inlet valve, the water inlet valve is connected in series on the water inlet pipe; Waste water valve, the waste water valve is connected in series on the waste water pipe.
  • the water purifier of the embodiment of the present application by designing the flow path of the composite filter element, water can be passed through the membrane in the radial direction, which improves the efficiency of the composite filter element in purifying and filtering water, and realizes the purpose of high-flux water purification.
  • the water can be multiply purified in the composite filter, which can improve the purification and filtration effect of the water.
  • the composite filter is an integrated core, which is easy to replace.
  • the water purifier further includes: a pre-filter, the pre-filter is connected in series on the water inlet pipe.
  • the pre-filter is connected upstream of the water inlet valve.
  • the pre-filter includes a pre-filter shell and a filter screen
  • the pre-filter shell can be opened and closed
  • the filter screen is detachably disposed in the pre-filter shell.
  • the water purifier further includes a high-pressure switch connected in series on the pure water pipe, and the high-pressure switch is electrically connected to the water inlet valve.
  • the water purifier further includes: a one-way valve connected in series on the pure water pipe.
  • the water purifier further includes: a faucet connected to the end of the pure water pipe.
  • the waste water valve is an adjustable waste water valve, and the waste water valve is cumulative flushing or standby flushing.
  • FIG. 1 is a schematic cross-sectional structure diagram of an embodiment of a composite filter element according to an embodiment of the present application.
  • FIG. 2 is an enlarged view of a partial structure in FIG. 1.
  • FIG 3 is a schematic top view of a composite filter element according to an embodiment of the present application.
  • FIG. 4 is a schematic cross-sectional view of a central liquid-separating membrane tube group provided with caps at both ends according to an embodiment of the present application, in which the spirally wound structure of the multilayer film assembly is drawn into a cylindrical body by omitting the drawing method.
  • FIG. 5 is a three-dimensional structural diagram of a central tube group according to an embodiment of the present application.
  • FIG. 6 is a top view of a diaphragm bag and a central tube, and a waste water header in accordance with an embodiment of the present application.
  • FIG. 7 is a schematic top view of a central liquid separation membrane tube group according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a waterway conversion cover according to an embodiment of the present application.
  • FIG. 9 is a schematic cross-sectional view of a waterway conversion cover according to an embodiment of the present application.
  • FIG. 10 is a schematic bottom view of a waterway converted into a cover according to an embodiment of the present application.
  • FIG. 11 is a schematic top view of a waterway converted into a cover according to an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of a central liquid separation membrane tube group according to another embodiment of the present application when a cap is provided at an end.
  • FIG. 13 is a structural schematic diagram of a central liquid separation membrane tube group according to another embodiment of the present application.
  • FIG. 14 is a schematic cross-sectional structure diagram of another embodiment of a composite filter element according to an embodiment of the present application.
  • FIG. 15 is an enlarged view of a partial structure in FIG. 14.
  • 16 is a schematic structural diagram of a water purifier according to an embodiment of the present application.
  • Shell 1 bottle body 11, bottle cap 12, raw water inlet 121, pure water outlet 122, waste water outlet 123, inner pipe 124, outer pipe 125, sealing ring 128,
  • Central liquid separation membrane tube group 2 central tube group 20, peripheral surface 201, end surface 202, outer flow channel 203, inner flow channel 204, filtered water outlet 212, waste water outlet 222,
  • Waste water header 22 waste water inlet hole 221, waste water circulation cavity 220,
  • Waterway conversion cover group 4 waterway conversion inlet cover 41, inlet half cylinder 411, outlet half cylinder 412, cylinder connecting pipe 413, waterway conversion inner cover 42, inner end tube 421, waterway conversion outer cover 43, Outer end tube 431, inner cover 44, outer cover 45, waste water diversion channel 46, filtered water diversion channel 47,
  • Wastewater connection 5 waste water inlet 51, filtered water connection 6, filtered water inlet 61, filtered water outlet 62,
  • 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 according to an embodiment of the present application will be described below with reference.
  • a composite filter element 100 includes a housing 1, a central liquid separation membrane tube group 2, a waterway conversion cover group 4 and After the filter element 7, the housing 1 is provided with a raw water inlet 121, a pure water outlet 122 and a waste water outlet 123.
  • the central liquid separation membrane tube group 2, the waterway conversion cover group 4 and the rear filter 7 are all provided in the housing 1, the housing 1 constitutes the overall packaging structure of the composite filter core 100, and has support, protection, positioning, internal components, The role of installation.
  • the housing 1 includes a bottle body 11 and a bottle cap 12.
  • the bottle body 11 is open at one end, and the bottle cap 12 is connected to the open end of the bottle body 11 to seal the bottle body 11.
  • the raw water inlet 121, the pure water outlet 122 and the waste water outlet 123 are all provided on the bottle cap 12.
  • the bottle body 11 may be open at both ends and the bottle cap 12 may be two, or the entire housing 1 may be formed as a structure that is split from the middle. At this time, the housing 1 includes only two half-shells, which is not described here. limit.
  • a raw water flow channel 101 is defined between the outer peripheral wall of the central liquid separation membrane tube group 2 and the inner wall of the casing 1, and the raw water inlet 121 communicates with the raw water flow channel 101.
  • the central liquid separation membrane tube group 2 is cylindrical, and the central liquid separation membrane tube group 2 has a circumferential surface 201 and end surfaces 202 at both ends in the axial direction.
  • the raw water flow channel 101 is defined between the inner walls, and the raw water inlet 121 communicates with the raw water flow channel 101.
  • the end surface 202 is provided with a filtered water outlet hole 212 and a waste water outlet hole 222, and the central liquid separation membrane tube group 2 is encapsulated on both end surfaces 202 except for the filtered water outlet hole 212 and the waste water outlet hole 222.
  • the central liquid separation membrane tube group 2 defines a filtered water circulation cavity 210 and at least one inner flow channel 204.
  • the inner end of the inner flow channel 204 communicates with the filtered water circulation cavity 210, and the inner flow channel 204 extends along a spiral line in a direction away from the filtered water circulation cavity 210.
  • the outer flow channel 203 is defined between different circles of the inner flow channel 204.
  • the partition wall between the inner flow channel 204 and the outer flow channel 203 may be all filter membranes, or only part of them may be filter membranes.
  • each inner flow channel 204 When there are a plurality of inner flow channels 204, the plurality of inner flow channels 204 are circumferentially disposed around the filtered water circulation cavity 210. The inner end of each inner flow channel 204 communicates with the filtered water circulation cavity 210. Each inner flow channel 204 extends along a spiral line in a direction away from the filtered water circulation cavity 210, and is defined between two adjacent inner flow channels 204 ⁇ ⁇ ⁇ 203.
  • the partition wall between the inner flow channel 204 and the outer flow channel 203 may be all filter membranes, or only part of them may be filter membranes.
  • the outer end of the inner flow channel 204 may be encapsulated, and the outer end of the inner flow channel 204 may also be separated from the raw water flow channel 101 by a filter membrane.
  • the outer end of the outer flow channel 203 is in communication with the raw water flow channel 101.
  • the wall surfaces of the inner flow channel 204 at both ends in the axial direction may be provided as impervious walls, and the wall surfaces of the outer flow channel 203 at both ends in the axial direction may be provided as impervious walls.
  • the partition wall between the inner flow channel 204 and the outer flow channel 203 may be connected to the end cover. In this way, the raw water can only flow inwardly along the inner flow channel 204 and the outer flow channel 203 or directly through the filter membrane, and cannot flow directly from the end to the filtered water circulation chamber 210 after overflowing from the end.
  • the raw water can be restricted from flowing radially to the filtered water circulation chamber 210 in the center of the center liquid separation membrane tube group 2.
  • part of the water flow will flow along the spiral line.
  • the water pressure in the filtered water circulation chamber 210 is much smaller than the water pressure in the original water flow channel 101, under the guidance of the pressure difference, the filtered water that can pass through the filter membrane flows more directly toward the filtered water circulation chamber 210.
  • the flow of filtered water separated from the raw water is close to penetrating the filter membrane in the normal direction, the positive pressure through the membrane is large, and the flow path of the water flow is short. This greatly reduces the resistance of the filtered water flow and shortens the time for the water to flow through the membrane, so that the purpose of preparing water with large flux can be achieved, and the efficiency of water purification is improved.
  • the waste water outlet 222 is provided corresponding to the inner end of the outer flow channel 203, and the filtered water outlet 212 is provided corresponding to the filtered water circulation cavity 210.
  • the central liquid separation membrane tube group 2 includes: a central tube group 20 and a plurality of diaphragm bags 23, and the central tube group 20 includes a central tube 21 and a plurality of The wastewater headers 22 are spaced apart, and a plurality of wastewater headers 22 are disposed around the central tube 21.
  • the pipe wall of the central pipe 21 is provided with a filtered water inlet hole 211
  • the waste water header 22 is provided with a waste water inlet hole 221
  • the diaphragm bag 23 has a first part inside the center pipe group 20 and a center pipe group 20
  • the outer second part, each wastewater header 22 and center tube 21 are separated by a first part of at least one membrane bag 23, the second parts of the plurality of membrane bags 23 form a plurality of Thin film components.
  • the central tube 21 defines a filtered water circulation cavity 210 communicating with the filtered water inlet hole 211
  • the waste water header 22 defines a waste water circulation cavity 220 which communicates with the waste water inlet hole 221.
  • the raw water entering through the raw water inlet 121 flows from the raw water flow path 101 to the outer peripheral side of the central liquid separation membrane tube group 2, the raw water passes through the multi-layer film module made of the membrane bag 23 and then passes through the membrane bag 23 and The filtered filtered water flows into the central tube 21 from the filtered water inlet hole 211 and is collected into the filtered water circulation chamber 210, and the waste water that has not passed through the membrane bag 23 flows into the waste water collection pipe 22 from the waste water inlet hole 221 and is collected into the waste water Circulation chamber 220.
  • the water channel conversion cover group 4 is covered at the axial end of the central liquid separation membrane tube group 2, and the rear filter 7 is provided in the water channel conversion cover group 4.
  • the waterway conversion cover group 4 may also be two and are respectively covered at the axial ends of the central liquid separation membrane tube group 2, here only the case when the waterway conversion cover group 4 is one
  • the case where the waterway conversion cover group 4 is provided at both ends can be directly derived from this, and will not be described in detail.
  • the water channel conversion cover group 4 is provided with a waste water guide channel 46 and a filtered water guide channel 47. Both ends of the waste water guide channel 46 communicate with the waste water circulation chamber 220, The waste water outlet 123, the two ends of the filtered water guide channel 47 respectively communicate with the filtered water circulation chamber 210 and the pure water outlet 122, and the post-filter element 7 is disposed in the filtered water guide channel 47.
  • the obtained filtered water flows into the filtered water guide channel 47 of the water channel conversion cover group 4, and the obtained waste water flows into the waste water guide of the water channel conversion cover group 4 Flow channel 46.
  • the waste water entering the waste water guide channel 46 can flow out from the waste water outlet 123, and the obtained filtered water is further purified by the post-filter 7 in the filtered water guide channel 47 to form pure water more suitable for people to use.
  • the raw water, filtered water, and pure water mentioned in this article are not limited to the composition of water, but are named differently for the convenience of explaining the water purification process.
  • the water in 2 is called raw water, and the water that flows into the central tube 21 after being split by the central liquid separation membrane tube group 2 is called filtered water (that is, the water obtained by filtering the raw water once), and flows into the wastewater after being split by the central liquid separation membrane tube group 2
  • the water in the header 22 is called wastewater, and the water filtered by the post-filter 7 is called pure water (that is, water obtained by secondary filtration of raw water).
  • the composite filter element 100 by designing the structure of the composite filter element 100, after the raw water enters the raw water flow path 101, it can be radially wound through the multi-layer membrane module wound by the multi-layer membrane bag 23 . Most of the water flowing into the raw water flow channel 101 flows in the circumferential direction and axial direction, and is dispersed on the outer periphery of the central liquid separation membrane tube group 2. During the circumferential and axial flow, the water flow scours the impurities on the surface of the membrane, which can avoid the membrane The surface is blocked to improve the filtering capacity.
  • the raw water passes through the multilayer membrane module in the radial direction. Most of the water flow is close to penetrating the membrane in the normal direction, the positive pressure across the membrane is large, and the flow path of the water flow is short in the radial direction. That is, the filtered water filtered through the central liquid separation membrane tube group 2 can quickly flow out from the central liquid separation membrane tube group 2.
  • this scheme greatly reduces the resistance of the filtered water flow, and shortens the time for the water to pass through the membrane, so that the purpose of high-flux preparation of purified water can be achieved and improved Water purification efficiency.
  • the filter element with the post-filter element 7 and the filter element with the central liquid separation membrane tube group 2 are connected in series, and the two are connected by pipes.
  • this embodiment of the present application improves this solution, and uses the waterway conversion cover group 4 to integrate the rear filter element 7 in the composite filter element 100, saving pipeline connection, shortening the entire purification path, and saving the cost of the filter element.
  • the integrated filter element 100 is integrated into one body, which greatly simplifies the structure for the purification system. When the user needs to disassemble and replace the core, the operation is convenient, and the user experience is improved.
  • the central liquid separation membrane tube group 2 further includes a pre-filter element 24.
  • the pre-filter element 24 has a cylindrical shape with open ends, and the pre-filter element 24 is disposed in the inner flow path On the outside of 204 and the outer flow channel 203, the raw water flow channel 101 is annular and surrounds the outside of the pre-filter 24. In this way, raw water undergoes at least three layers of filtration to form pure water, and the pure water formed is of higher quality.
  • the pre-filter element 24 may be concentrically rolled with the multi-layer membrane module to form a pre-filter cartridge, which is convenient for installation.
  • the pre-filter element 24 can be made of non-woven fabric, PP cotton and carbon fiber, which can purify and filter the raw water in advance, effectively intercepting iron filings, sediment, organic matter and residual chlorine in the water.
  • the pre-filter element 24 is coated on the multi-layer membrane module without an intermediate framework between them, that is, the outer end of the multi-layer membrane module is directly attached to the inner wall of the pre-filter element 24, which saves parts.
  • the bottle cap 12 is non-openably connected to the bottle body 11, for example, the bottle cap 12 may be welded to the bottle body 11.
  • the bottle cap 12 is detachably connected to the bottle body 11, and the waterway conversion cap group 4 is connected between the bottle cap 12 and the central liquid separation membrane tube group 2.
  • the waterway conversion cover group 4 and the central liquid separation membrane tube group 2 are detachably connected in the housing 1, thereby providing the possibility and convenience for the core replacement, which reduces the replacement cost compared with the traditional disposable filter element assembly .
  • the form of the opening and closing design may be a form of covering, a form of screw connection, or a form of plug-in buckling, which is not specifically limited here.
  • the bottle cap 12 is screwed on the bottle body 11 with a seal ring 128 provided therebetween.
  • the sealing ring 128 is an O-shaped sealing ring, and there are at least one sealing ring 128.
  • the waterway conversion cap group 4 is connected to the bottle cap 12, and the waterway conversion cap group 4 is rotatable relative to the bottle cap 12.
  • the cap 12 needs to be tightened or loosened by rotation.
  • the waterway conversion cap group 4 is opposite to the cap 12 It can be rotated so as not to damage the waterway conversion cover group 4.
  • the water channel conversion cap group 4 and the central liquid separation membrane tube group 2 can be compressed to improve the internal structure assembly quality, so it is necessary to set the water channel conversion cap group 4 to be relatively
  • the bottle cap 12 is rotatable.
  • the plurality of diaphragm bags 23 of the central liquid-separating membrane tube group 2 is formed into a cylindrical shape after winding the central tube group 20.
  • the unidirectional rolling of a plurality of diaphragm bags 23 forms a spiral outer flow path 203 between the second portions of two adjacent diaphragm bags 23, and the second of each diaphragm bag 23
  • a spiral inner flow channel 204 is formed in part.
  • both the inner flow channel 204 and the outer flow channel 203 are provided with a partition net to prevent the diaphragm from clinging to each other.
  • the central liquid-separating membrane tube group 2 adopts a lateral flow water-saving membrane, and the lateral flow enters the water to increase the flow rate of the membrane surface, ensure a higher recovery rate of pure water, and a longer service life of the membrane bag 23.
  • the central liquid separation membrane tube group 2 may be a reverse osmosis membrane element or an ultrafiltration membrane module. That is, the membrane bag 23 may use a reverse osmosis membrane already known in the market, or an ultrafiltration membrane already on the market.
  • the principles and techniques of ultrafiltration filtration and reverse osmosis filtration are all well-known technologies known to those skilled in the art, and will not be repeated in this application.
  • the axial end of the central liquid separation membrane tube group 2 is encapsulated by the waterway conversion cover group 4 to prevent raw water from flowing directly from the end surface 202 to the central tube group 20 and to prevent the mixed flow of filtered water and wastewater on the end surface 202.
  • the other axial end of the central liquid separation membrane tube group 2 is sealed by a sealing plate 9 to prevent the raw water from flowing directly from the end surface 202 to the central tube group 20 to avoid filtered water and wastewater Mixed flow at the end 202.
  • the waterway conversion cover group 4 and the sealing plate 9 are respectively glued to the axial ends of the central liquid separation membrane tube group 2, which not only facilitates assembly, but also avoids damage to the membrane.
  • the waterway conversion cover group 4 and the sealing plate 9 are respectively connected to the end of the central liquid-separating membrane tube group 2 by a ring of hot melt adhesive.
  • the central pipe 21 and the waste water header 22 are respectively through pipes, and the sealing plate 9 is provided with a plurality of plugs 91, which are respectively plugged and connected to the ends of the central pipe 21 and the waste water header 22 to play a sealing role. To avoid mixed flow of filtered water and wastewater.
  • the waterway conversion cover group 4 includes a waterway conversion inlet cover 41, a waterway conversion inside and outside cover 42 and a waterway conversion out cover 43.
  • the waterway switching inlet cover 41 covers the end of the central liquid separation membrane tube group 2, the waterway switching inlet cover 41 is provided with a waste water inlet 51 communicating with the waste water circulation chamber 220, and the waterway switching inlet cover 41 is provided with a connected filtered water circulation chamber 210 The filtered water inlet 61.
  • the water channel conversion inner outlet cover 42 is covered on the water channel conversion inlet cover 41, and a filtered water guide channel 47 is defined between the water channel conversion inner outlet cover 42 and the water channel conversion inlet cover 41, and the water channel conversion inner outlet cover 42 is provided with a connection with pure water ⁇ 122 ⁇ 44 of the outlet 122.
  • the waterway switching out cover 43 is covered on the waterway switching out cover 42, the outer periphery of the waterway switching out cover 43 is connected to the waterway switching in cover 41, the waterway switching out cover 43, the waterway switching out cover 42 and the waterway switching in cover 41
  • a waste water guiding channel 46 is defined between the water channel conversion outer cover 43 and the water channel conversion inner cover 42 and an outer cover port 45 connecting the waste water outlet 123 is defined.
  • wastewater can enter the waterway conversion cover group 4 from the wastewater circulation cavity 220 through the wastewater inlet 51, and filtered water can enter the waterway conversion cover group 4 from the filtered water circulation cavity 210 through the filtered water inlet 61.
  • the waterway switch-in cover 41 and the waterway switch-in cover 42 can separate the filtered water from the waste water.
  • a filtered water guide channel 47 is defined between the water channel switching inlet cover 41 and the water channel switching inner outlet cover 42. The filtered water flows along the filtered water channel 47 to the inner cover port 44, and the inner cover port 44 is connected to the pure water outlet 122 , Pure water can flow out from the pure water outlet 122.
  • a waste water guide channel 46 is defined between the water channel conversion outer cover 43, the water channel conversion inner cover 42 and the water channel conversion inlet cover 41, and the waste water flows along the waste water guide channel 46 to the outer cover port 45, the outer cover port 45 and the waste water outlet 123 connection, wastewater can flow out from the wastewater outlet 123.
  • the filtered water guide channel 47 which can be provided with the rear filter 7 is defined, and the central liquid separation membrane tube group 2 can also be divided
  • the discharged wastewater and filtered water are respectively directed to the pure water outlet 122 and the wastewater outlet 123, and the structure is simple.
  • Such a waterway conversion cover group 4 is very assembleable, greatly simplifying the assembly process and shortening the assembly time.
  • the waterway conversion inlet cover 41 includes an inlet half cylinder 411, an outlet half cylinder 412 and a cylinder connecting pipe 413.
  • the inlet half cylinder 411 is open at one end toward the center liquid separation membrane tube group 2, the waste water inlet 51 and the filtered water inlet 61 are provided on the inlet half cylinder 411, and one end of the center liquid separation membrane tube group 2 is fitted at the inlet end On the inner peripheral side of the semi-cylindrical body 411, the water passage switching outgoing cover 43 is connected to the outer peripheral side of the inlet half-cylindrical body 411.
  • the outlet half-cylinder 412 is open at the end away from the central liquid separation membrane tube group 2, the outlet half-cylinder 412 and the inlet half-cylinder 411 are spaced apart, and the outlet cap 42 is connected to the outlet half-cylinder 412 In the peripheral wall of the outlet, the outlet half cylinder 412 is provided with a filtered water outlet 62.
  • the cylinder connecting pipe 413 is connected between the inlet half cylinder 411 and the outlet half cylinder 412, one end of the cylinder connecting pipe 413 is connected to the filtered water inlet 61, and the other end is connected to the filtered water outlet 62.
  • both the inlet half cylinder 411 and the outlet half cylinder 412 are open on the opposite side, and the two are connected through the cylinder connecting pipe 413.
  • the hole in the inlet half cylinder 411 communicating with the cylinder connecting pipe 413 is the filtered water inlet 61
  • the hole in the outlet half cylinder 412 communicating with the cylinder connecting pipe 413 is the filtered water outlet 62.
  • a waste water inlet 51 is provided at a position where the inlet half cylinder 411 deviates from the cylinder connecting pipe 413, and the wastewater inlet 51 is not in communication with the cylinder connecting pipe 413.
  • Forming the inlet half-cylinder body 411 into a cylindrical shape with one end open is to facilitate cooperation with the end of the central liquid-separating membrane tube group 2 and to increase the sealing reliability of the end of the central liquid-separating membrane tube group 2.
  • the cylindrical semi-cylindrical body 411 can tightly enclose the rolled multi-layer film assembly to avoid unraveling.
  • the outlet half-cylinder 412 is formed into a cylindrical shape with one end open to facilitate connection with the water passage conversion inner cover 42.
  • the outlet half-cylinder 412 is connected to the water passage conversion inner cover 42 with a large contact area and tightness Okay, avoid streaming.
  • the outlet half-cylinder 412 and the inlet half-cylinder 411 are spaced apart to facilitate the flow of waste water.
  • the waste water guide 46 formed at this time is in communication with the waste water inlet 51 on the inlet half-cylinder 411 .
  • the waterway switching outgoing cover 43 is sleeved on the outer peripheral side of the inlet half cylinder 411, it is possible to make use of the pressure difference to make the waterway switching outgoing lid 43 closely contact the outer peripheral side of the inlet half cylinder 411, so as to achieve a good seal effect.
  • a stepped surface is formed on the cylindrical wall of the inlet half-cylinder body 411 to facilitate positioning with the water passage switching outgoing cover 43.
  • the inlet half-cylinder 411, the outlet half-cylinder 412, and the cylinder connecting pipe 413 are integrally formed pieces, so that the structural sealability is easily guaranteed.
  • the inlet half cylinder 411 and the cylinder connecting pipe 413 are an integrally formed piece, and the outlet half cylinder 412 is connected to the cylinder connecting pipe 413.
  • the inlet half cylinder 411, the outlet half cylinder 412 and the cylinder connecting pipe 413 can also be connected by welding, and the three can also be threaded even under the premise of ensuring the tightness Wait, there is no limit here.
  • the water passage conversion inner cover 42 forms an inverted water trough shape
  • the water passage conversion outer cover 43 also forms an inverted water trough shape
  • the size of the water passage conversion outer cover 43 is larger than the water passage conversion inner outlet The cover 42, so that the waterway conversion outgoing cover 43 can be buckled on the waterway conversion outgoing cover 42, and a certain gap can be formed between the two to form a waste water guide channel 46.
  • the lower end peripheral edge of the water passage switching inner outlet cover 42 is connected to the peripheral wall of the outlet half cylinder 412, and the upper end opening of the water passage switching inner outlet cover 42 constitutes the inner lid opening 44.
  • the lower end peripheral edge of the waterway switching outer cover 43 is connected to the peripheral wall of the inlet half cylinder 411, and the upper end peripheral edge of the waterway switching outer cover 43 is sheathed outside the upper end periphery of the waterway switching inner cover 42, formed between the two
  • the annular opening constitutes the outer cover opening 45 described above.
  • the radial dimension of the inlet half cylinder 411 is larger than the radial dimension of the outlet half cylinder 412.
  • the lower end of the waterway conversion outer cover 43 needs to be larger than the lower end of the waterway conversion inner cover 42 to facilitate the assembly of the waterway conversion cover group 4.
  • the thickness of the joint between the outlet half-cylinder 412 and the water passage conversion inner cover 42 is reduced, and the contact cross-section of the two is formed into a Z shape, which can increase the contact area To improve the sealing effect.
  • the waterway conversion inner outlet cover 42 is welded and connected to the waterway conversion inlet cover 41, for example, the waterway conversion inner outlet cover 42 is connected to the outlet half cylinder 412 by spin welding.
  • the reason for this arrangement is that the inside of the water passage conversion inner cover 42 communicates with the pure water outlet 122, and once the water leaks, the composite filter element 100 will fail. Therefore, the welding connection can ensure the connection strength and improve the sealing durability.
  • the waterway conversion outgoing cover 43 is adhesively connected to the waterway conversion ingress cover 41.
  • the reason why the adhesive connection is used is that the process is simple, the cost is low, and the processing is fast.
  • the waterway conversion out cover The internal and external pressure difference of 43 ensures that the waterway switching out cover 43 can be tightly attached to the waterway switching in cover 41.
  • the filtered water guide channel 47 and the central liquid separation membrane tube group 2 are coaxially arranged, and the waste water guide channel 46 is coated outside the filtered water guide channel 47.
  • the filtered water in the central liquid-separating membrane tube group 2 is equivalent to flowing straight to the filtered water guide channel 47.
  • the amount of filtered water is usually much larger than that of waste water, which is beneficial to the efficiency of filtered water circulation.
  • such a setting will increase the discharge resistance of the waste water, and the increase of the water pressure of the waste water will cause the central liquid separation membrane tube group 2 to filter out more filtered water from the waste water to the filtered water guide channel 47, thereby improving the purification rate.
  • the cross-section of each component of each waterway conversion cover group 4 is substantially circular, which is convenient for manufacturing.
  • the waterway conversion cover group 4 is assembled from inside to outside, the rear filter 7 is disposed in the central filtering water guide channel 47, and the rear filter 7 is assembled and positioned Easier.
  • the diameter of the portion of the filtered water guiding channel 47 between the outlet half-cylinder 412 and the water passage conversion cover 43 is large, and the provision of the rear filter 7 does not affect the water flowability.
  • the waterway conversion cover group 4 can also adopt other shapes, for example, the waterway conversion cover group 4 forms a barrel shape, and a partition is formed in the barrel shape (similar to a mandarin duck hot pot separated by a partition in the middle) ), Half of the barrel is used to flow through waste water, and the other half is used to circulate filtered water.
  • the side of the waterway conversion cover 41 facing the central liquid separation membrane tube group 2 is provided with a waste water pipe 5 and a filtered water pipe 6, and the pipe of the waste water pipe 5
  • the outlet is the waste water inlet 51
  • the filtered water inlet 6 is the filtered water inlet 61.
  • the waste water circulation chamber 220 communicates with the waste water connection pipe 5, and the waste water flows out of the waste water circulation chamber 220 and enters the waterway conversion cover group 4 along the waste water connection pipe 5.
  • the filtered water circulation chamber 210 is in communication with the filtered water connection pipe 6. The filtered water flows out of the filtered water circulation chamber 210 and enters the water path conversion cover group 4 along the filtered water connection pipe 6.
  • the center pipe 21 is inserted into the filtered water connection pipe 6, and the waste water header 22 is inserted into the waste water connection pipe 5.
  • the waterway conversion cover group 4 is separated from the center
  • the membrane tube group 2 has a centering effect to prevent deflection, and can also be connected through a cannula to ensure the tightness of the connection and avoid cross-flow.
  • One-to-one correspondence setting can conveniently position the central tube group 20.
  • the structure of the present application is not limited to this.
  • the filtered water connection 6 and the waste water connection 5 can also be eliminated, the central tube 21 is directly inserted in the filtered water inlet 61, and the waste water header 22 is directly inserted Within the wastewater inlet 51.
  • the bottle cap 12 is provided with an inner tube 124 and an outer tube 125, the outer tube 125 is overlaid on the inner tube 124, and the water channel conversion inner outlet cap 42 It is connected to the inner connecting pipe 124, and the water channel switching out cover 43 is connected to the outer connecting pipe 125.
  • the inner lid port 44 can be easily communicated with the pure water outlet 122
  • the outer lid port 45 can be easily communicated with the waste water outlet 123.
  • the inner channel 42 of the waterway conversion is formed into a tubular shape at the end away from the central liquid separation membrane tube group 2, the tube is called an inner end tube 421, and the inner end tube 421 is sleeved at An inner sealing ring (not shown in the figure) is provided on the inner connecting pipe 124, which is advantageous for improving the sealing performance.
  • the waterway conversion outgoing cover 43 is formed in a tube shape at the end away from the central liquid separation membrane tube group 2, which is called an outer end tube 431, and the outer end tube 431 is sleeved on an external tube On 125, there is an outer sealing ring (not shown in the figure) between them, which is conducive to improving the sealing performance.
  • the post-filter 7 is a cake-shaped or rod-shaped carbon core.
  • the carbon core can effectively remove organic matter, residual chlorine and other radioactive substances in the water, and can also intercept particles larger than 10-20 microns in the liquid, which has the dual effect of purifying and filtering the water.
  • the post-filter element 7 is formed into a cake shape or a rod shape, which is convenient for assembly and fixing.
  • the rear filter element 7 can also be formed in other shapes, using other filter materials, such as a multi-layer membrane structure, or a cylindrical structure to pass filtered water from the inside to the outside, and no specific restrictions are made here. .
  • the water purifier 1000 of the embodiment of the present application will be described below with reference to FIG. 16.
  • a water purifier 1000 includes a composite filter element 100, an inlet pipe 301, a waste pipe 302, a pure water pipe 303, a booster pump 304, an inlet valve 305, and a waste valve 306.
  • the composite filter element assembly 100 is a main component of water purification.
  • the composite filter element assembly 100 includes at least a housing 1, a central liquid separation membrane tube group 2, a waterway conversion cover group 4 and a rear filter element 7.
  • the housing 1 is provided with a raw water inlet 121, a pure water outlet 122 and a waste water outlet 123.
  • the central liquid-separating membrane tube group 2 is provided in the housing 1, and a raw water flow channel 101 is defined between the outer peripheral wall of the center liquid-separating membrane tube group 2 and the housing 1, the raw water inlet 121 communicates with the raw water flow channel 101, and the central liquid-separating membrane
  • the tube group 2 includes a central tube group 20 and a plurality of membrane bags 23, the central tube group 20 includes a central tube 21 and a plurality of spaced wastewater headers 22, and a plurality of wastewater headers 22 are disposed around the central tube 21, the center
  • the pipe wall of the tube 21 is provided with a filtered water inlet hole 211, the waste water header 22 is provided with a waste water inlet hole 221, and the diaphragm bag 23 has a first part inside the center pipe group 20 and outside the center pipe group 20 In the second part of each, each waste water header 22 and central tube 21 are separated by a first part of at least one membrane bag 23, and the second parts of a plurality of membrane bags 23 form a multilayer surrounding the central tube group 20
  • the waterway conversion cover group 4 is provided in the housing 1, and the waterway conversion cover group 4 is provided with a waste water guide channel 46 and a filtered water guide channel 47. Both ends of the waste water guide channel 46 communicate with the waste water circulation chamber 220 and the waste water outlet respectively 123, the two ends of the filtered water guiding channel 47 communicate with the filtered water circulation chamber 210 and the pure water outlet 122, respectively.
  • the post-filter 7 is provided in the filtered water guide 47.
  • the water inlet pipe 301 is connected to the raw water inlet 121 on the casing 1
  • the waste water pipe 302 is connected to the waste water outlet 123 on the casing 1
  • the pure water pipe 303 is connected to the pure water outlet 122 on the casing 1.
  • the booster pump 304 is connected in series to the water inlet pipe 301, and the booster pump 304 can increase the pressure of the water.
  • the water inlet valve 305 is connected in series to the water inlet pipe 301, and the water inlet valve 305 can control the on-off of the water inlet pipe 301.
  • the waste water valve 306 is connected in series to the waste water pipe 302, and the waste water valve 306 can control the turning on and off of the waste water pipe 302.
  • the composite filter 100 purifies and filters the water and separates the water into pure water and waste water.
  • the pure water flows from the pure water outlet 122 to the pure water pipe 303, which is convenient Used by the user, the waste water flows from the waste water outlet 123 to the waste water pipe 302.
  • waste water can be discharged along the waste water pipe 302, which is beneficial to the discharge of waste water.
  • waste water valve 306 When the waste water valve 306 is closed, water can only flow out from the pure water pipe 303, thereby increasing the pressure of the water in the composite filter 100, Improve the water purification efficiency of the composite filter 100 for water, reduce waste water discharge, and save water resources.
  • the water purifier 1000 of the embodiment of the present application by designing the flow path of the composite filter element 100, the water purification efficiency of the composite filter element 100 is improved, and large-flux water purification can be achieved. Water can be subjected to multiple purification and filtration in the composite filter element 100, which can improve the purification quality of water.
  • the composite filter element 100 is integrated into one body for easy replacement.
  • the water purifier 1000 can be provided with a relatively simple waterway system, which is simple to control and easy to operate.
  • the water purifier 1000 further includes a pre-filter 307, and the pre-filter 307 is connected in series to the water inlet pipe 301 to further improve the filtering effect. Moreover, a pre-filter 307 is provided upstream of the composite filter element 100 to reduce the entry of large particles of impurities, and the service life of the composite filter element 100 can be extended.
  • the pre-filter 307 includes a pre-filter shell and a filter screen, the pre-filter shell can be opened and closed, and the filter screen is detachably disposed in the pre-filter shell.
  • the filter net can remove large particles, suspended solids, rust, sediment and other impurities in the water, and reduce the purification filtering pressure of the composite filter core 100.
  • the pre-filter 307 may also be filter cotton, other filter elements, etc., which is not limited herein.
  • the pre-filter shell is opened to facilitate the installation or removal of the filter screen from the pre-filter shell.
  • the pre-filter shell is closed to limit the filter screen to prevent the filter screen from loosening and reduce the filtering effect. Disassembling the filter screen can facilitate the cleaning of the filter screen, prevent excessive impurities from blocking the position of the filter screen, and increase the resistance of water circulation.
  • the pre-filter 307 is connected upstream of the water inlet valve 305.
  • upstream refers to the upstream position of the two positions in the direction of water flow.
  • the pre-filter 307 is provided upstream of the water inlet valve 305, and the pre-filter 307 can filter part of impurities to prevent excessive impurities from entering the water inlet valve 305 to block the water inlet valve 305.
  • the water first flows through the pre-filter 307 on the water inlet pipe 301, and then flows through the water inlet valve 305, and the water passing through the water inlet valve 305 flows to the booster pump 304.
  • the filter 307 can simultaneously protect the water inlet valve 305 and the booster pump 304 and prevent the water inlet valve 305 and the booster pump 304 from being blocked by impurities.
  • the water purifier 1000 can withstand a certain water pressure. When the water pressure is too large, the water purifier 1000 is easily damaged, and it is necessary to avoid the water pressure of the water purifier 1000 being too high.
  • the water purifier 1000 further includes a high-pressure switch 308 connected in series to the pure water pipe 303.
  • the high-pressure switch 308 is electrically connected to the water inlet valve 305.
  • the high-pressure switch 308 can detect the water pressure of the pure water pipe 303 and can set a preset value. When the water pressure of the pure water pipe 303 is higher than the preset value, the high-pressure switch 308 can control the water inlet valve 305 so that the inlet The water valve 305 is closed, so that the water purifier 1000 stops working.
  • the water purifier 1000 further includes a one-way valve 309 connected in series to the pure water pipe 303, so that the water in the pure water pipe 303 passes through the one-way valve 309 No backflow is possible, which prevents backflow in the composite filter element 100.
  • the water purifier 1000 further includes a faucet 300 connected to the end of the pure water pipe 303.
  • the water flows out through the faucet 300 and is used by the user.
  • the check valve 309 is provided upstream of the faucet 300.
  • a part of the water can be retained from the check valve 309 to the position of the faucet 300. It is convenient for the user to open the faucet 300 and the water can flow out without waiting.
  • impurities in the air can be prevented from entering the pure water pipe 303 and blocking the pure water pipe 303.
  • the switch of the faucet 300, the water inlet valve 305 and the booster pump 304 are electrically connected.
  • the faucet 300 is turned on, the water inlet valve 305 is also opened, the booster pump 304 starts to work, and the composite filter element 100 starts to purify filtered water. , Convenient control.
  • the waste water valve 306 is an adjustable waste water valve, and the flow of waste water is controlled by adjusting the size of the waste water valve 306.
  • the waste water valve 306 When a large flow of water flows through the waste water valve 306, impurities are easily washed away to prevent the waste water valve 306 from becoming invalid.
  • the waste water valve 306 is a cumulative flushing or standby flushing, so that the waste water can be hoarded to a certain degree before it can flow out, avoiding frequent switching to reduce the filtration efficiency, and also avoiding the accumulation of impurities, ensuring the service life of the membrane bag 23 .
  • the waste water valve 306 may have other embodiments, which are not limited herein.
  • the structure of the composite filter element 100 according to two specific embodiments of the present application is described below with reference to FIGS. 1, 2, 14, and 15, and the specific embodiment of the present application is described with reference to FIG. 16.
  • the center liquid separation membrane tube group 2 and the water channel conversion cover group 4 are coaxially arranged, and the water channel conversion cover group 4 is located at one end of the center liquid separation membrane tube group 2.
  • the RO membrane that is, the reverse osmosis membrane
  • the RO membrane used in the central liquid separation membrane tube group 2 is provided with a rear carbon in the waterway conversion cover group 4, and the two are arranged up and down.
  • the post-carbon is in a cake shape
  • the RO membrane is in a spiral shape.
  • a raw water flow channel 101 is defined between the central liquid separation membrane tube group 2, the water path conversion cover group 4 and the inner wall of the casing 1.
  • the top of the housing 1 is a bottle cap 12, and the bottle cap 12 is provided with a raw water inlet 121, a pure water outlet 122, and a waste water outlet 123.
  • the raw water inlet 121 flows in from an axial end of the raw water flow channel 101, and flushes the center to separate liquid in the axial direction Membrane tube group 2 surface.
  • the central liquid separation membrane tube group 2 is formed by rolling a five-leaf diaphragm bag 23 around the central tube group 20, and an outer flow channel is between two adjacent diaphragm bags 23, and an inner flow channel is inside each diaphragm bag 23 .
  • the film bag 23 is rolled into a sheet shape, similar to a square piece formed by flattening the rice bag after emptying the rice.
  • the membrane formed by rolling the membrane bag 23 is sealed with glue on all four sides.
  • the water flow of the RO membrane enters from the radial direction and the flow rate is faster. Even when the recovery rate is 3: 1, the RO membrane can maintain a longer use. life.
  • the central tube group 20 includes a central tube 21 and a waste water header 22.
  • the water channel conversion cover group 4 is provided with a filtered water connection pipe 6 and a waste water connection tube 5.
  • the central liquid separation membrane tube group 2 is plug-in connected with the water channel conversion cover group 4.
  • the raw water flowing radially into the central liquid-separating membrane tube group 2 can pass through the membrane bag 23 and flow into the central tube 21 by filtered water, and the remaining water flows into the wastewater header 22.
  • the filtered water flows through the post-carbon filter and is discharged from the pure water outlet 122, and the waste water is discharged from the waste water outlet 123.
  • the center liquid separation membrane tube group 2 and the water channel conversion cover group 4 are coaxially arranged, and the water channel conversion cover group 4 is located in the center liquid separation membrane tube group 2.
  • the RO membrane ie reverse osmosis membrane
  • the pre-filter element 24 is a cylindrical shape with open ends and pre-filter The element 24 is disposed outside the inner flow channel 204 and the outer flow channel 203.
  • the raw water flow channel 101 is ring-shaped and surrounds the outer side of the pre-filter element 24.
  • the pre-filter element 24 can be made of non-woven fabric, PP cotton and carbon fiber, which can purify and filter the raw water in advance, effectively intercepting iron filings, sediment, organic matter and residual chlorine in the water.
  • a post filter 7 (post carbon) is provided in the waterway conversion cover group 4, the post filter 7 is a cake-shaped or rod-shaped carbon core, and the post filter 7 and the RO membrane are arranged up and down.
  • the rear carbon is pie-shaped, the RO film is a spiral wound, and the RO film is rolled into a multilayer film assembly.
  • a raw water flow channel 101 is defined between the central liquid separation membrane tube group 2, the water path conversion cover group 4 and the inner wall of the casing 1.
  • the top of the housing 1 is a bottle cap 12, and the bottle cap 12 is provided with a raw water inlet 121, a pure water outlet 122, and a waste water outlet 123.
  • the raw water inlet 121 flows in from an axial end of the raw water flow channel 101, and flushes the center to separate liquid Membrane tube group 2 surface.
  • the central liquid separation membrane tube group 2 is formed by rolling a five-leaf diaphragm bag 23 around the central tube group 20, and an outer flow channel 203 is between two adjacent diaphragm bags 23, and each diaphragm bag 23 has an internal flow Road 204.
  • the film bag 23 is rolled into a sheet shape, similar to a square piece formed by flattening the rice bag after emptying the rice.
  • the membrane formed by rolling the membrane bag 23 is sealed with glue on all four sides.
  • the water flow of the RO membrane enters from the radial direction and the flow rate is faster. Even when the recovery rate is 3: 1, the RO membrane can maintain a longer use. life.
  • the central tube group 20 includes a central tube 21 and a waste water header 22.
  • the water channel conversion cover group 4 is provided with a filtered water connection pipe 6 and a waste water connection tube 5.
  • the central liquid separation membrane tube group 2 is plug-in connected with the water channel conversion cover group 4.
  • the raw water flowing radially into the central liquid-separating membrane tube group 2 can pass through the membrane bag 23 and flow into the central tube 21 by filtered water, and the remaining water flows into the wastewater header 22.
  • the filtered water flows through the post-carbon filter and is discharged from the pure water outlet 122, and the waste water is discharged from the waste water outlet 123.
  • a water purifier 1000 includes the composite filter element 100 of Embodiment 1, and further includes an inlet pipe 301, a waste pipe 302, a pure water pipe 303, a booster pump 304, an inlet valve 305, and a waste valve 306 , Pre-filter 307, high-pressure switch 308, check valve 309, faucet 300.
  • the water inlet pipe 301 is connected to the raw water inlet 121 on the casing 1
  • the waste water pipe 302 is connected to the waste water outlet 123 on the casing 1
  • the pure water pipe 303 is connected to the pure water outlet 122 on the casing 1.
  • the booster pump 304 is connected in series to the water inlet pipe 301.
  • the water inlet valve 305 is connected in series to the water inlet pipe 301, and the water inlet valve 305 can control the on-off of the water inlet pipe 301.
  • the waste water valve 306 is connected in series to the waste water pipe 302, and the waste water valve 306 can control the turning on and off of the waste water pipe 302.
  • the pre-filter 307 is connected in series to the water inlet pipe 301, and a pre-filter 307 is provided upstream of the composite filter element 100 (such as upstream of the water inlet valve 305).
  • the pre-filter 307 includes a pre-filter shell and a filter screen, the pre-filter shell can be opened and closed, and the filter screen is detachably disposed in the pre-filter shell.
  • the high-pressure switch 308 is connected in series to the pure water pipe 303.
  • the high-pressure switch 308 is electrically connected to the water inlet valve 305.
  • the high-pressure switch 308 can control the water inlet valve 305 so that the water inlet valve 305 is closed, so that the water purifier 1000 stops working.
  • the check valve 309 is connected in series to the pure water pipe 303 to prevent backflow in the composite filter element 100.
  • the faucet 300 is connected to the end of the pure water pipe 303, and the one-way valve 309 is provided upstream of the faucet 300.
  • the switch of the faucet 300, the water inlet valve 305, and the booster pump 304 are electrically connected to open the faucet 300, and the water inlet valve 305 is also opened Then, the booster pump 304 starts to work, and the composite filter element 100 starts to purify the filtered water.
  • the waste water valve 306 is an adjustable waste water valve.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

一种复合滤芯(100)和净水器(1000)，复合滤芯包括壳体(1)、由多个膜片袋(23)卷绕中心管组(20)而成的中心分液膜管组(2)、内设有废水导流道(46)和过滤水导流道(47)的水路转换盖组(4)和设在过滤水导流道内的后置过滤件(7)。中心管组包括中心管(21)和多个废水集管(22)。废水导流道分别连通废水集管、壳体上的废水出口(123)，过滤水导流道分别连通中心管、壳体上的纯水出口(122)。

Description

复合滤芯和净水器
相关申请的交叉引用
本申请基于申请号为201811290834.5、申请日为2018年10月31日的中国专利申请“复合滤芯”，申请号为201821786336.5、申请日为2018年10月31日的中国专利申请“复合滤芯”，申请号为201811288955.6、申请日为2018年10月31日的中国专利申请“净水器”，申请号为201821786753.X、申请日为2018年10月31日的中国专利申请“净水器”，申请号为201811291040.0、申请日为2018年10月31日的中国专利申请“复合滤芯”，以及申请号为201821786754.4、申请日为2018年10月31日的中国专利申请“复合滤芯”，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
本申请涉及净水技术领域，尤其涉及一种复合滤芯和净水器。
背景技术
在相关技术中，净水设备采用PP棉、活性炭等作为前置滤芯，然后再串联RO滤芯等构成由多级滤芯连接的水系统，进行水的净化处理。整个系统管路连接复杂，安装与更换不便，多接头连接、漏水风险点多。更重要的是，多级滤芯的使用寿命不一致，消费者需要更换的滤芯有三到五级之多，需要频繁购买滤芯并且需由专业的安装人员进行更换，消费者的体验差、综合成本高。
发明内容
本申请旨在至少在一定程度上解决相关技术中的技术问题之一。
为此，本申请的一个目的在于提出一种复合滤芯，所述复合滤芯，流道简单，净化水的效率高、效果好，具有较好的使用体验感。
本申请的另一目的在于提出一种具有上述复合滤芯的净水器。
根据本申请实施例的复合滤芯，包括：壳体，所述壳体上设有原水进口、纯水出口和废水出口；中心分液膜管组，所述中心分液膜管组设在所述壳体内，所述中心分液膜管组的外周壁与所述壳体之间限定出原水流道，所述原水进口连通所述原水流道，所述中心分液膜管组包括：中心管组和多个膜片袋，所述中心管组包括中心管和多个间隔开设置的废水集管，多个所述废水集管环绕所述中心管设置，所述中心管的管壁上设有过滤水入孔，所 述废水集管的管壁上设有废水入孔，所述膜片袋具有位于所述中心管组内部的第一部分和位于所述中心管组外部的第二部分，每一所述废水集管和所述中心管被至少一个所述膜片袋的第一部分隔开，多个所述膜片袋的所述第二部分形成围绕在所述中心管组的周围的多层薄膜组件，所述中心管内限定出过滤水流通腔，所述废水集管内限定出废水流通腔；水路转换盖组，所述水路转换盖组设在所述壳体内，且盖在所述中心分液膜管组的轴向一端，所述水路转换盖组内设有废水导流道和过滤水导流道，所述废水导流道的两端分别连通所述废水流通腔、所述废水出口，所述过滤水导流道的两端分别连通所述过滤水流通腔、所述纯水出口；后置过滤件，所述后置过滤件设在所述过滤水导流道内。
根据本申请实施例的复合滤芯，通过对复合滤芯的结构设计，使得原水进入原水流道后，沿径向穿过多层膜片袋卷绕而成的多层薄膜组件。进入原水流道的大部分水流沿周向、轴向流动分散在中心分液膜管组外周，沿周向、轴向流动的过程中冲刷膜表面的杂质，避免膜表面阻塞。之后原水沿径向穿过多层薄膜组件，大部分水流接近于沿法向穿透膜片，穿膜正压力大，而且沿径向水流流动路径短。相对于沿轴向穿过中心分液膜管组的方案而言，本方案极大地降低了过滤水流阻力，且缩短了水流过膜时间，从而可实现大通量制备净水的目的，提高了净水效率。通过中心分液膜管组和水路转换盖组的设置，可以将纯水和废水有效分离，而进一步在水路转换盖组中设置后置过滤件，增加纯水过滤工序，更好地满足人们需要。利用水路转换盖组将后置过滤件集成在复合滤芯内，而不是将后置过滤件移至外部再连接管道，节省了管道连接，缩短了整个净化路径，节省了滤芯成本。而且复合滤芯集成为一体，对于净化系统而言也是极大地简化了结构，而用户在需要拆装、换芯时，操作方便，提高了用户体验。
另外，根据本申请的复合滤芯，还可以具有如下附加的技术特征：
可选的，所述中心分液膜管组为柱形且具有周面和轴向两端的端面，所述周面与所述壳体的内壁之间限定出原水流道，所述端面上设有过滤水出孔和废水出孔，所述中心分液膜管组在两端所述端面上除所述过滤水出孔及所述废水出孔外均封装，所述中心分液膜管组内限定出过滤水流通腔和至少一个内流道，每个所述内流道的内端与所述过滤水流通腔相连通，每个所述内流道在远离所述过滤水流通腔的方向上沿螺旋线延伸，所述内流道的不同圈之间或者相邻两个所述内流道之间限定出外流道，所述内流道和所述外流道之间的间隔壁至少部分为过滤膜，所述内流道的外端被封装或者通过所述过滤膜与所述原水流道间隔，所述外流道的外端与所述原水流道连通，所述废水出孔对应所述外流道的内端设置，所述过滤水出孔对应所述过滤水流通腔设置。
可选的，所述中心分液膜管组还包括前置过滤件，所述前置过滤件为两端敞开的筒形，所述前置过滤件设置在所述内流道及所述外流道的外侧，所述原水流道为环形且环绕在所 述前置过滤件的外侧。
可选的，所述壳体包括瓶体和瓶盖，所述瓶体的至少一端敞开，所述瓶盖连接在所述瓶体的端部以密封所述瓶体，所述原水进口、所述纯水出口和所述废水出口设在所述瓶盖上，所述水路转换盖组连接在所述瓶盖和所述中心分液膜管组之间。
可选的，所述瓶体仅一端敞开，所述水路转换盖组封装在所述中心分液膜管组的一端，所述瓶体内设有封板，所述封板封装在所述中心分液膜管组的另一端。
可选的，所述水路转换盖组包括：水路转换进盖，所述水路转换进盖盖在所述中心分液膜管组的端部，所述水路转换进盖上设有连通所述废水流通腔的废水进口、以及连通所述过滤水流通腔的过滤水进口；水路转换内出盖，所述水路转换内出盖盖在所述水路转换进盖上，所述水路转换内出盖与所述水路转换进盖之间限定出所述过滤水导流道，所述水路转换内出盖上设有连接所述纯水出口的内盖口；水路转换外出盖，所述水路转换外出盖盖在所述水路转换内出盖上，所述水路转换外出盖的外周沿与所述水路转换进盖相连，所述水路转换外出盖、所述水路转换内出盖与所述水路转换进盖之间限定出所述废水导流道，所述水路转换外出盖与所述水路转换内出盖之间限定出连接所述废水出口的外盖口。
可选的，所述水路转换进盖的朝向所述中心分液膜管组的一侧设有废水接管和过滤水接管，所述废水接管的管口为所述废水进口，所述过滤水接管的管口为所述过滤水进口。
可选的，所述中心管插接在所述过滤水接管上，所述废水接管为多个，多个所述废水集管一一对应地插接在多个所述废水接管上。
可选的，所述水路转换进盖包括：进端半筒体，所述进端半筒体在朝向所述中心分液膜管组的一端敞开，所述废水进口、所述过滤水进口设在所述进端半筒体上，所述中心分液膜管组的一端配合在所述进端半筒体的内周侧，所述水路转换外出盖连接在所述进端半筒体的外周侧；出端半筒体，所述出端半筒体在远离所述中心分液膜管组的一端敞开，所述出端半筒体与所述进端半筒体之间间隔开，所述水路转换内出盖连接所述出端半筒体的周壁，所述出端半筒体上设有过滤水出口；筒体连管，所述筒体连管连接在所述进端半筒体和所述出端半筒体之间，所述筒体连管的一端连接所述过滤水进口、另一端连接所述过滤水出口。
可选的，所述瓶盖上设有内接管和外接管，所述外接管外套在所述内接管上，所述水路转换内出盖连接在所述内接管上，所述水路转换外出盖连接在所述外接管上。
可选的，所述水路转换外出盖在远离所述中心分液膜管组的一端形成外端管，所述外端管套接在所述外接管上，所述外端管与所述外接管之间设有外密封圈；所述水路转换内出盖在远离所述中心分液膜管组的一端形成内端管，所述内端管套接在所述内接管上，所述内端管与所述内接管之间设有内密封圈。
可选的，所述水路转换内出盖焊接连接在所述水路转换进盖上，所述水路转换外出盖胶粘连接在所述水路转换进盖上。
可选的，所述进端半筒体、所述出端半筒体和所述筒体连管为一体成型件。
可选的，所述进端半筒体的径向尺寸大于所述出端半筒体的径向尺寸。
可选的，所述过滤水导流道与所述中心分液膜管组同轴设置，所述废水导流道外套在所述过滤水导流道的外侧。
可选的，所述后置过滤件为饼状或者棒状的碳芯。
可选的，所述壳体包括瓶体和瓶盖，所述瓶盖盖合在所述盖体上，所述中心分液膜管组设在所述瓶体内，所述水路转换盖组连接在所述瓶盖上，所述水路转换盖组相对所述瓶盖可转动。
可选的，多个所述膜片袋沿同向螺旋卷制形成多层薄膜组件，所述膜片袋的袋壁为所述过滤膜，所述膜片袋的内部构成所述内流道，相邻所述膜片袋之间构成所述外流道；所述多层薄膜组件上卷制有前置滤筒。
根据本申请实施例的净水器，包括：复合滤芯，所述复合滤芯为前述的复合滤芯；进水管，所述进水管连接所述壳体上的所述原水进口；废水管，所述废水管连接所述壳体上的所述废水出口；纯水管，所述纯水管连接所述壳体上的所述纯水出口；增压泵，所述增压泵串联连接在所述进水管上；进水阀，所述进水阀串联连接在所述进水管上；废水阀，所述废水阀串联连接在所述废水管上。
根据本申请实施例的净水器，通过对复合滤芯的流道设计，使得水可以从径向过膜，提高了复合滤芯对水的净化过滤效率，实现大通量净水的目的。水在复合滤芯中可进行多重净化过滤，可以提高水的净化过滤效果，复合滤芯为一体芯，方便更换，通过对净水器的流道设计，可以使得净水器具有较为简单的水路系统，控制简单、操作方便。
可选的，净水器还包括：预过滤器，所述预过滤器串联连接在所述进水管上。
可选的，所述预过滤器连接在所述进水阀的上游。
可选的，所述预过滤器包括：前置滤壳和过滤网，所述前置滤壳可开合，所述过滤网可拆卸地设置在所述前置滤壳内。
可选的，净水器还包括：串联连接在所述纯水管上的高压开关，所述高压开关与所述进水阀电联结。
可选的，净水器还包括：串联连接在所述纯水管上的单向阀。
可选的，净水器还包括：连接在所述纯水管的末端的水龙头。
可选的，所述废水阀为可调废水阀，所述废水阀为累计制冲洗或待机冲洗。
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是根据本申请实施例的复合滤芯的一个实施例的剖面结构示意图。
图2是图1中局部结构放大图。
图3是根据本申请一个实施例的复合滤芯的俯视示意图。
图4是根据本申请一个实施例的中心分液膜管组在两端设盖时的截面示意图，其中将多层薄膜组件的螺旋卷制结构以省略画法画成圆筒体。
图5为本申请一个实施例的中心管组的立体结构示意图。
图6为本申请一个实施例的一膜片袋和中心管、一废水集管配合的俯视图。
图7为本申请一个实施例的中心分液膜管组的俯视示意图。
图8是根据本申请一个实施例的水路转换进盖的结构示意图。
图9是根据本申请一个实施例的水路转换进盖的剖视示意图。
图10是根据本申请一个实施例的水路转换进盖的仰视示意图。
图11是根据本申请一个实施例的水路转换进盖的俯视示意图。
图12是根据本申请另一个实施例的中心分液膜管组在端部设盖时的结构示意图。
图13是根据本申请另一个实施例的中心分液膜管组的结构原理图。
图14是根据本申请实施例的复合滤芯的另一个实施例的剖面结构示意图。
图15是图14中的局部结构放大图。
图16是根据本申请实施例的净水器的结构示意图。
附图标记：
净水器1000、
复合滤芯100、
壳体1、瓶体11、瓶盖12、原水进口121、纯水出口122、废水出口123、内接管124、外接管125、密封圈128、
原水流道101、
中心分液膜管组2、中心管组20、周面201、端面202、外流道203、内流道204、过滤水出孔212、废水出孔222、
中心管21、过滤水入孔211、过滤水流通腔210、
废水集管22、废水入孔221、废水流通腔220、
膜片袋23、前置过滤件24、
水路转换盖组4、水路转换进盖41、进端半筒体411、出端半筒体412、筒体连管413、水路转换内出盖42、内端管421、水路转换外出盖43、外端管431、内盖口44、外盖口45、废水导流道46、过滤水导流道47、
废水接管5、废水进口51、过滤水接管6、过滤水进口61、过滤水出口62、
后置过滤件7、封板9、堵头91、
进水管301、废水管302、纯水管303、增压泵304、进水阀305、废水阀306、预过滤器307、高压开关308、单向阀309、水龙头300。
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，旨在用于解释本申请，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”、“上”、“下”、“顶”、“底”、“内”、“外”、“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。
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。
下面参考描述根据本申请实施例的复合滤芯100。
如图1(或图14)和图2(或图15)所示，根据本申请实施例的一种复合滤芯100，包括壳体1、中心分液膜管组2、水路转换盖组4和后置过滤件7，壳体1上设有原水进口121、纯水出口122和废水出口123。
中心分液膜管组2、水路转换盖组4和后置过滤件7均设在壳体1内，壳体1构成复合滤芯100的整体封装结构，且对内部部件具有支撑、保护、定位、安装的作用。壳体1的结构形式有多种，在图1的示例中，壳体1包括瓶体11和瓶盖12，瓶体11一端敞开，瓶盖12连接在瓶体11的敞开端以密封瓶体11，在该示例中，如图3所示， 原水进口121、纯水出口122和废水出口123均设在瓶盖12上。在其他实施例中，瓶体11可以两端敞开且瓶盖12为两个，或者整个壳体1形成为从中间对开的结构，此时壳体1仅包括两个半壳体，这里不作限制。
如图1(或图14)所示，中心分液膜管组2的外周壁与壳体1的内壁之间限定出原水流道101，原水进口121连通原水流道101。
具体地，如图14、图15所示，中心分液膜管组2为柱形，中心分液膜管组2具有周面201和轴向两端的端面202，周面201与壳体1的内壁之间限定出原水流道101，原水进口121连通原水流道101。端面202上设有过滤水出孔212和废水出孔222，中心分液膜管组2在两端端面202上除过滤水出孔212及废水出孔222外均封装。
如图13所示，中心分液膜管组2内限定出过滤水流通腔210和至少一个内流道204。这里，内流道204可以是一个也可以是多个。
当内流道204为一个时，如图13所示，内流道204的内端与过滤水流通腔210相连通，内流道204在远离过滤水流通腔210的方向上沿螺旋线延伸，内流道204的不同圈之间限定出外流道203。内流道204和外流道203之间的间隔壁可以全部为过滤膜，也可以仅部分为过滤膜。
当内流道204为多个时，多个内流道204沿周向环绕过滤水流通腔210设置。每个内流道204的内端与过滤水流通腔210相连通，每个内流道204在远离过滤水流通腔210的方向上沿螺旋线延伸，相邻两个内流道204之间限定出外流道203。内流道204和外流道203之间的间隔壁可以全部为过滤膜，也可以仅部分为过滤膜。
其中，如图13所示，内流道204的外端可以是被封装的，内流道204的外端也可以通过过滤膜与原水流道101间隔。而外流道203的外端是与原水流道101相连通的。
上文提到的封装，可以是将内流道204在轴向两端的壁面设置成不透水壁，外流道203在轴向两端的壁面设置成不透水壁。如在中心分液膜管组2在两端设盖时，可以将内流道204和外流道203之间的间隔壁连接在端部盖上。这样设置，使得原水要向内流动，只能沿内流道204、外流道203螺旋流动，或者直接穿过过滤膜流动，无法从端部溢出后直接向过滤水流通腔210流动。
这样可以限制原水沿径向流向中心分液膜管组2中心的过滤水流通腔210，原水在内流道204、外流道203的影响下部分水流会沿螺旋线流动。由于过滤水流通腔210内水压远远小于原水流道101内水压，在压差导向下，能穿过过滤膜的过滤水更多地径直朝向过滤水流通腔210流动。原水中分离出的过滤水水流接近于沿法向穿透过滤膜，穿膜正压力大，而且水流流动路径短。这样极大地降低了过滤水流阻力，且缩短了水流过膜时间，从而可实现大通量制备净水的目的，提高了净水效率。
其中，废水出孔222对应外流道203的内端设置，过滤水出孔212对应过滤水流通腔210设置。
在本申请的一些实施例中，如图4-图7所示，中心分液膜管组2包括：中心管组20和多个膜片袋23，中心管组20包括中心管21和多个间隔开设置的废水集管22，多个废水集管22环绕中心管21设置。中心管21的管壁上设有过滤水入孔211，废水集管22的管壁上设有废水入孔221，膜片袋23具有位于中心管组20内部的第一部分和位于中心管组20外部的第二部分，每一废水集管22和中心管21被至少一个膜片袋23的第一部分隔开，多个膜片袋23的第二部分形成围绕在中心管组20的周围的多层薄膜组件。中心管21内限定出与过滤水入孔211连通的过滤水流通腔210，废水集管22内限定出与废水入孔221连通的废水流通腔220。即通过原水进口121进入的原水，从原水流道101流向中心分液膜管组2的外周侧，原水穿过膜片袋23卷制成的多层薄膜组件后，穿过膜片袋23而过滤出的过滤水从过滤水入孔211流入中心管21，汇集到过滤水流通腔210中，未穿过膜片袋23的废水则从废水入孔221流入废水集管22中，汇集到废水流通腔220中。
如图2(或图15)所示，水路转换盖组4盖在中心分液膜管组2的轴向一端，后置过滤件7设在水路转换盖组4内。当然，本申请的一些实施例中，水路转换盖组4也可以为两个且分别盖在中心分液膜管组2的轴向两端，这里仅以水路转换盖组4为一个时的情况进行说明，而两端均设置水路转换盖组4的情况由此可以直接推导出，不再赘述。
具体地，如图2(或图15)所示，水路转换盖组4内设有废水导流道46和过滤水导流道47，废水导流道46的两端分别连通废水流通腔220、废水出口123，过滤水导流道47的两端分别连通过滤水流通腔210、纯水出口122，后置过滤件7设置在过滤水导流道47内。
也就是说，原水在经中心分液膜管组2过滤并分液后，得到的过滤水流入水路转换盖组4的过滤水导流道47，得到的废水流入水路转换盖组4的废水导流道46。进入废水导流道46的废水可从废水出口123流出，得到的过滤水在过滤水导流道47经后置过滤件7进一步净化，形成更适于人们使用的纯水。需要说明的是，本文中提及的原水、过滤水、纯水并不是对水的成分的限定，而是为便于说明净水过程而对水的区别命名，其中未经中心分液膜管组2的水称为原水、经中心分液膜管组2分流后流入中心管21内的水称为过滤水(即由原水一次过滤所得水)，经中心分液膜管组2分流后流入废水集管22内的水称为废水，称经后置过滤件7过滤的水为纯水(即由原水二次过滤所得水)。
在本申请实施例的复合滤芯100中，通过对复合滤芯100的结构设计，使得原水进入原水流道101后，可沿径向穿过多层膜片袋23卷绕而成的多层薄膜组件。进入原水流道101的大部分水流沿周向、轴向流动，并分散在中心分液膜管组2外周，沿周向、轴向流动的过程中，水流冲刷膜表面的杂质，可避免膜表面阻塞，提高过滤能力。
之后原水沿径向穿过多层薄膜组件，大部分水流接近于沿法向穿透膜片，穿膜正压力大，而且在径向上水流流动路径短。即经中心分液膜片管组2过滤所得的过滤水，可以很快从中心分液膜片管组2流出。
相对于沿轴向穿过中心分液膜管组2的方案而言，本方案极大地降低了过滤水流阻力，且缩短了水流过膜时间，从而可实现大通量制备净水的目的，提高了净水效率。
通过中心分液膜管组2和水路转换盖组4的设置，可以将纯水和废水有效分离，而进一步在水路转换盖组4中设置后置过滤件7，提高净化程度，能更好地满足人们的需要。
这里需要说明的是，常规的净化结构中通常是将带有后置过滤件7的滤芯和带有中心分液膜管组2的滤芯进行串联，二者用管道连接。但是本申请实施例中改进了这种方案，利用水路转换盖组4将后置过滤件7集成在复合滤芯100内，节省了管道连接，缩短了整个净化路径，节省了滤芯成本。而且复合滤芯100集成为一体，对于净化系统而言也是极大地简化了结构。用户在需要拆装、换芯时，操作方便，提高了用户体验。
在一些实施例中，如图14所示，中心分液膜管组2还包括前置过滤件24，前置过滤件24为两端敞开的筒形，前置过滤件24设置在内流道204及外流道203的外侧，原水流道101为环形且环绕在前置过滤件24的外侧。这样原水至少经历三层过滤形成纯水，形成的纯水质量更高。
可选地，当多个膜片袋23卷制形成多层薄膜组件时，前置过滤件24可以与多层薄膜组件同心卷制，形成前置滤筒，方便安装。前置过滤件24可由无纺布、PP棉和碳纤维制成，可预先对原水进行净化过滤，有效拦截水中的铁屑、泥沙、有机物及余氯等。
在一些具体实施例中，前置过滤件24外套在多层薄膜组件上，二者之间没有中间骨架，即多层薄膜组件外端直接贴在前置过滤件24内壁上，这样节省零件。
在本申请的一些实施例中，瓶盖12不可开合地连接在瓶体11上，例如，瓶盖12可焊接连接在瓶体11。
在本申请的一些实施例中，瓶盖12可开合地连接在瓶体11上，水路转换盖组4连接在瓶盖12和中心分液膜管组2之间。水路转换盖组4、中心分液膜管组2可拆卸地连接在壳体1内，由此，为换芯提供了可能性和便利性，相比于传统抛弃式滤芯组件， 降低了更换成本。
这里，开合设计的形式可以为盖合形式，也可以为螺纹连接的形式，还可以为插接扣合的形式，在这里不做具体限制。在图1(或图14)的示例中，瓶盖12螺纹连接在瓶体11上，二者之间设有密封圈128。可选地，密封圈128为O形密封圈，密封圈128至少一道。
进一步地，水路转换盖组4连接在瓶盖12上，水路转换盖组4相对瓶盖12可转动。可开合的瓶盖12在开合过程中，难免会需要通过旋转使瓶盖12盖紧或者松开，甚至当瓶盖12螺旋连接在瓶体11时，水路转换盖组4相对瓶盖12可转动，才不会对水路转换盖组4造成损坏。另外，瓶盖12在摁紧、旋紧的过程中，可以将水路转换盖组4和中心分液膜管组2压紧，提高内部结构装配质量，因此需要将水路转换盖组4设置成相对瓶盖12可转动。
在本申请实施例中，如图4和图7所示，中心分液膜管组2的多个膜片袋23，在卷绕中心管组20后形成筒形。如图13所示，多个膜片袋23的单向卷制，使相邻两个膜片袋23的第二部分之间形成螺旋形的外流道203，每个膜片袋23的第二部分内部形成螺旋形的内流道204。有利地，内流道204和外流道203内均设有隔网，避免膜片紧贴。
可想而知，原水在沿径向流入中心分液膜管组2时，每穿过一片膜片过滤一次，因而中心分液膜管组2的过滤效果有保障。在原水流动的过程中，大部分杂质被膜片阻挡在外流道203内。这里，在水流朝向中心管组20流动的过程中，也会带动外流道203内的杂质沿螺旋方向朝向中心管组20流动，最终到达废水集管22。
中心分液膜管组2采用侧流节水膜，通过侧流进水，提高膜表面流速，保证较高的纯水回收率，以及膜片袋23较长的使用寿命。
可选地，中心分液膜管组2可以是反渗透膜元件，也可为超滤膜组件。即膜片袋23可选用市场上已经知的反渗透膜，也可选用市场上已有的超滤膜。超滤过滤以及反渗透过滤的原理和技术均为本领域技术人员所熟知的现有技术，在本申请中不再赘述。
在一些实施例中，中心分液膜管组2的轴向一端通过水路转换盖组4封装，避免原水直接从端面202流向中心管组20，避免过滤水和废水在端面202混流。
具体地，如图1(或图14)所示，中心分液膜管组2的轴向另一端通过封板9封装，也避免原水直接从端面202流向中心管组20，避免过滤水和废水在端面202混流。
进一步地，水路转换盖组4和封板9分别胶粘在中心分液膜管组2的轴向端部，这样不仅装配方便，而且可避免损伤膜片。可选地，水路转换盖组4和封板9分别通过一圈热熔胶密封连接在中心分液膜管组2的端部。
具体地，中心管21和废水集管22分别为贯通管，封板9上设有多个堵头91，分别插接连接在中心管21和废水集管22的端部，以起到密封作用，避免过滤水和废水混流。
在本申请的一些实施例中，如图2(或图15)所示，水路转换盖组4包括水路转换进盖41、水路转换内出盖42和水路转换外出盖43。水路转换进盖41盖在中心分液膜管组2的端部，水路转换进盖41上设有连通废水流通腔220的废水进口51，水路转换进盖41上设有连通过滤水流通腔210的过滤水进口61。水路转换内出盖42盖在水路转换进盖41上，水路转换内出盖42与水路转换进盖41之间限定出过滤水导流道47，水路转换内出盖42上设有连接纯水出口122的内盖口44。水路转换外出盖43盖在水路转换内出盖42上，水路转换外出盖43的外周沿与水路转换进盖41相连，水路转换外出盖43、水路转换内出盖42与水路转换进盖41之间限定出废水导流道46，水路转换外出盖43与水路转换内出盖42之间限定出连接废水出口123的外盖口45。
也就是说，废水可以从废水流通腔220通过废水进口51进入水路转换盖组4，过滤水可以从过滤水流通腔210通过过滤水进口61进入水路转换盖组4。水路转换进盖41和水路转换内出盖42可以将过滤水和废水隔开。在水路转换进盖41和水路转换内出盖42之间限定出过滤水导流道47，过滤水沿着过滤水导流道47流向内盖口44，内盖口44与纯水出口122连接，纯水可从纯水出口122流出。在水路转换外出盖43、水路转换内出盖42与水路转换进盖41之间限定出废水导流道46，废水沿着废水导流道46流向外盖口45，外盖口45与废水出口123连接，废水可从废水出口123流出。
通过水路转换进盖41、水路转换内出盖42和水路转换外出盖43的配合，限定出可以设置后置过滤件7的过滤水导流道47，也可以将中心分液膜管组2分流出的废水和过滤水分别导向纯水出口122和废水出口123，结构简单。
这样的水路转换盖组4，可装配性非常强，极大简化装配工序，缩短装配时间。
在本申请的一些具体实施例中，如图8和图9所示，水路转换进盖41包括进端半筒体411、出端半筒体412和筒体连管413。
进端半筒体411在朝向中心分液膜管组2的一端敞开，废水进口51、过滤水进口61设在进端半筒体411上，中心分液膜管组2的一端配合在进端半筒体411的内周侧，水路转换外出盖43连接在进端半筒体411的外周侧。
出端半筒体412在远离中心分液膜管组2的一端敞开，出端半筒体412与进端半筒体411之间间隔开，水路转换内出盖42连接出端半筒体412的周壁，出端半筒体412上设有过滤水出口62。筒体连管413连接在进端半筒体411和出端半筒体412之间， 筒体连管413的一端连接过滤水进口61、另一端连接过滤水出口62。
也就是说，进端半筒体411和出端半筒体412在相背侧均敞开，二者通过筒体连管413相连。进端半筒体411上与筒体连管413连通的孔是过滤水进口61，出端半筒体412上与筒体连管413连通的孔是过滤水出口62。而进端半筒体411偏离筒体连管413处设置有废水进口51，废水进口51与筒体连管413不连通。
将进端半筒体411形成一端敞开的筒形，是为了方便与中心分液膜管组2的端部配合，使中心分液膜管组2的端部密封可靠性增加。而且筒形的进端半筒体411能紧紧地箍住卷制的多层薄膜组件，避免散开。
而将出端半筒体412形成一端敞开的筒形，则是为了方便与水路转换内出盖42相连，出端半筒体412与水路转换内出盖42相接合，接触面积大，密封性好，避免串流。
出端半筒体412与进端半筒体411之间间隔开，则是为了方便废水流动，此时形成的废水导流道46，正是与进端半筒体411上的废水进口51连通。
这里提到将水路转换外出盖43连接在进端半筒体411的外周侧，一方面能方便定位装配，另一方面可使水路转换外出盖43与进端半筒体411形成良好密封连接。可以理解的是，水流过滤过程中因过膜存在较大压损，显然原水流道101内水压明显大于中心分液膜管组2的内部水压，及废水导流道46内水压。此时将水路转换外出盖43套在进端半筒体411的外周侧，正是可以利用压差，使水路转换外出盖43紧贴进端半筒体411的外周侧，从而达到密封良好的效果。
在图8和图15可以看出，进端半筒体411的筒壁上形成有台阶面，以便于与水路转换外出盖43定位。
可选地，进端半筒体411、出端半筒体412和筒体连管413为一体成型件，这样结构密封性容易保障。或者如图12所示，进端半筒体411、筒体连管413是一体成型件，出端半筒体412连接在筒体连管413上。
当然，本申请实施例中，进端半筒体411、出端半筒体412和筒体连管413也可以通过焊接连接的方式相连，甚至在保障密封性的前提下三者也可以螺纹连接等，这里不作限制。
在本申请实施例中，如图15所示，水路转换内出盖42形成倒置的水槽形，水路转换外出盖43也形成倒置的水槽形，且水路转换外出盖43的尺寸大于水路转换内出盖42，从而水路转换外出盖43能够扣在水路转换内出盖42上，且二者之间还能形成一定间隙以形成废水导流道46。
其中，在图15中，水路转换内出盖42的下端周沿与出端半筒体412的周壁相连，水路转换内出盖42的上端开口构成上述内盖口44。
水路转换外出盖43的下端周沿与进端半筒体411的周壁相连，水路转换外出盖43的上端周沿套在水路转换内出盖42的上端周沿的外侧，二者之间所形成的环形口构成上述外盖口45。
优选地，如图8所示，进端半筒体411的径向尺寸大于出端半筒体412的径向尺寸。这样设置，水路转换外出盖43的下端就需要比水路转换内出盖42的下端尺寸要大，能方便水路转换盖组4的装配。
在一个具体实施例中，如图5所示，出端半筒体412和水路转换内出盖42的接合处厚度减薄，二者的接触面断面形成为Z形，这样可以增大接触面积，提高密封效果。
可选地，水路转换内出盖42焊接连接在水路转换进盖41上，例如，水路转换内出盖42旋焊连接在出端半筒体412上。这样设置的原因在于，在于水路转换内出盖42的内部连通的是纯水出口122，一旦漏水将导致复合滤芯100失效。因此焊接连接可以保证连接强度，提高密封持久性。
在一个具体实施例中，水路转换外出盖43胶粘连接在水路转换进盖41上，之所以采用胶粘连接，一方面工艺简单、成本低、加工快，另一方面是由于水路转换外出盖43的内外压差保证水路转换外出盖43能紧贴在水路转换进盖41上。
具体地，如图2(或图15)所示，过滤水导流道47与中心分液膜管组2同轴设置，废水导流道46外套在过滤水导流道47的外侧。中心分液膜管组2中过滤出的过滤水相当于直线流向过滤水导流道47，过滤水的水量通常要远大于废水的水量，有利于过滤水流通效率。另外，如此设置会增加废水排出阻力，废水水压增加后会促使中心分液膜管组2中，废水中滤出更多过滤水流向过滤水导流道47，从而提高净化率。这样设置能方便将各水路转换盖组4的各部件截面基本为圆形，方便制造。
另外在上述水路转换盖组4的结构中，水路转换盖组4装配时由内向外装配，将后置过滤件7设置在中心的过滤水导流道47内，装配、定位后置过滤件7较容易。在图2(或图15)中，过滤水导流道47在出端半筒体412和水路转换出盖43之间的部分直径较大，设置后置过滤件7不会影响水流通过性。
当然，在本申请的其他实施例中，水路转换盖组4也可以采用其他形状，例如水路转换盖组4形成一个桶形，桶形中间隔出隔板(类似于鸳鸯火锅中间通过隔板分开)，桶形一半用来流通过废水，另一半用来流通过滤水。
在本申请的一些示例中，如图9和图10所示，水路转换进盖41的朝向中心分液膜管组2的一侧设有废水接管5和过滤水接管6，废水接管5的管口为废水进口51，过滤水接管6的管口为过滤水进口61。废水流通腔220与废水接管5连通，废水从废水流通腔220流出后沿着废水接管5进入水路转换盖组4。过滤水流通腔210与过滤水接管 6连通，过滤水从过滤水流通腔210流出后沿着过滤水接管6进入水路转换盖组4。
具体地，如图2(或图15)所示，中心管21插接在过滤水接管6上，废水集管22插接在废水接管5上，这样设置使水路转换盖组4与中心分液膜管组2具有定心的作用，防止偏斜，还能通过插管连接，保证连接处的密封性，避免串流。
具体地，废水接管5为多个，多个废水集管22一一对应地插接在多个废水接管5上。一一对应设置，能方便对中心管组20定位。
当然，本申请结构不限于此，例如在密封性能保证的前提下，过滤水接管6和废水接管5也可以取消，中心管21直接插接在过滤水进口61内，废水集管22直接插接在废水进口51内。
在本申请的一些实施例中，如图2(或图15)所示，瓶盖12上设有内接管124和外接管125，外接管125外套在内接管124上，水路转换内出盖42连接在内接管124上，水路转换外出盖43连接在外接管125上。这样能方便将内盖口44与纯水出口122连通，方便将外盖口45与废水出口123连通。其中，外接管125和内接管124之间有间隔空间，可供水流通。
具体地，如图2(或图15)所示，水路转换内出盖42在远离中心分液膜管组2的一端形成管状，该管称为内端管421，内端管421套接在内接管124上，二者之间设有内密封圈(图未示出)，这样设置有利于提高密封性。
具体地，如图2(或图15)所示，水路转换外出盖43在远离中心分液膜管组2的一端形成管状，该管称为外端管431，外端管431套接在外接管125上，二者之间设有外密封圈(图未示出)，这样设置有利于提高密封性。
在本申请的一些实施例中，后置过滤件7为饼状或者棒状的碳芯。碳芯能有效去除水中的有机物、余氯及其他放射性物质，还能截住液体中大于10-20微米的颗粒，对水具有净化过滤的双重效果。将后置过滤件7形成饼状或者棒状，方便装配固定。
当然本申请实施例中，后置过滤件7也可以形成其他形状，采用其他过滤材质，例如采用多层膜结构，或者采用筒状结构使过滤水由内侧向外侧穿过过滤，这里不作具体限制。
下面参考图16描述本申请实施例的净水器1000。
如图16所示，根据本申请实施例的净水器1000，包括复合滤芯100、进水管301、废水管302、纯水管303、增压泵304、进水阀305和废水阀306。
复合滤芯组件100是净水的主要部件。复合滤芯组件100至少包括壳体1、中心分液膜管组2、水路转换盖组4和后置过滤件7，壳体1上设有原水进口121、纯水出口 122和废水出口123。中心分液膜管组2设在壳体1内，中心分液膜管组2的外周壁与壳体1之间限定出原水流道101，原水进口121连通原水流道101，中心分液膜管组2包括：中心管组20和多个膜片袋23，中心管组20包括中心管21和多个间隔开设置的废水集管22，多个废水集管22环绕中心管21设置，中心管21的管壁上设有过滤水入孔211，废水集管22的管壁上设有废水入孔221，膜片袋23具有位于中心管组20内部的第一部分和位于中心管组20外部的第二部分，每一废水集管22和中心管21被至少一个膜片袋23的第一部分隔开，多个膜片袋23的第二部分形成围绕在中心管组20的周围的多层薄膜组件，中心管21内限定出过滤水流通腔210，废水集管22内限定出废水流通腔220。水路转换盖组4设在壳体1内，水路转换盖组4内设有废水导流道46和过滤水导流道47，废水导流道46的两端分别连通废水流通腔220、废水出口123，过滤水导流道47的两端分别连通过滤水流通腔210、纯水出口122。后置过滤件7设在过滤水导流道47内。
复合滤芯组件100的其他结构在前文已详述，这里不再赘述。
参照图16，进水管301连接壳体1上的原水进口121，废水管302连接壳体1上的废水出口123，纯水管303连接壳体1上的纯水出口122。增压泵304串联连接在进水管301上，增压泵304可以增加水的压力。进水阀305串联连接在进水管301上，进水阀305可控制进水管301的通断。废水阀306串联连接在废水管302上，废水阀306可控制废水管302的通断。
也就是说，打开进水阀305，水可从进水管301流向原水进口121，当水流至增压泵304时，增压泵304可以增加水的压力，有利于复合滤芯100获得高压水，从而对水净化过滤，水从原水进口121流进复合滤芯100后，复合滤芯100对水净化过滤，并将水分离成纯水和废水，纯水从纯水出口122流向纯水管303，从而方便被使用者使用，废水从废水出口123流向废水管302。当废水阀306打开时，废水可沿着废水管302排出，有利于废水的排放，当废水阀306关闭时，水只能从纯水管303流出，从而使得复合滤芯100中水的压力增加，提高复合滤芯100对水的净水过滤效率，减少废水的排放，节约水资源。
根据本申请实施例的净水器1000，通过对复合滤芯100的流道设计，复合滤芯100净水效率提高，可实现大通量净水。水在复合滤芯100中可进行多重净化过滤，可以提高水的净化质量。复合滤芯100整合为一体，方便更换，通过对净水器1000的流道设计，可以使得净水器1000具有较为简单的水路系统，控制简单、操作方便。
在本申请的一些实施例中，如图16所示，净水器1000还包括预过滤器307，预过滤器307串联连接在进水管301上，进一步提高过滤效果。而且在复合滤芯100的上游 设置预过滤器307，减少大粒杂质进入，可以延长复合滤芯100的使用寿命。
可选地，预过滤器307包括前置滤壳和过滤网，前置滤壳可开合，过滤网可拆卸地设置在前置滤壳内。过滤网可去除水中的大颗粒、悬浮物、铁锈、泥沙等杂质，降低复合滤芯100的净化过滤压力。可以理解的是，预过滤器307还可以是过滤棉、其他滤芯等，这里不做限定。其中，前置滤壳打开，可方便过滤网安装在前置滤壳内或者从前置滤壳内拆除，前置滤壳闭合可对过滤网进行限位，防止过滤网松动，降低过滤效果。拆装过滤网可以方便对过滤网进行清洗，防止过多的杂质阻塞在过滤网的位置，增加水流通的阻力。
可选地，如图16所示，预过滤器307连接在进水阀305的上游，这里，上游是指在水的流动方向上，两个位置中先流经的位置为上游。将预过滤器307设在进水阀305的上游，预过滤器307可将部分杂质过滤，防止过多的杂质进入进水阀305将进水阀305阻塞。
可选地，如图16所示，水在进水管301上先流经预过滤器307，然后再流经进水阀305，经过进水阀305的水再流向增压泵304，这样，预过滤器307可同时保护进水阀305和增压泵304，防止进水阀305和增压泵304被杂质堵塞。
需要说明的是，净水器1000能承受一定的水压，当水压过大时，容易损伤净水器1000，需要避免净水器1000的水压过高。在本申请的一些实施例中，如图16所示，净水器1000还包括串联连接在纯水管303上的高压开关308，高压开关308与进水阀305电联结。也就是说，高压开关308可以检测纯水管303的水压并可设置预设值，当纯水管303的水压高于预设值时，高压开关308可以控制进水阀305，使得进水阀305关闭，从而使得净水器1000停止工作。
在本申请的一些实施例中，如图16所示，净水器1000还包括串联连接在纯水管303上的单向阀309，这样纯水管303中的水在通过单向阀309后不能回流，可防止复合滤芯100内逆流。
在本申请的一些实施例中，如图16所示，净水器1000还包括连接在纯水管303的末端的水龙头300，水通过水龙头300流出，被使用者取用。这里，单向阀309设在水龙头300的上游，当停止取用水时，可以使得单向阀309至水龙头300的位置可留存部分水，可以方便使用者打开水龙头300水即可流出，无需等待，提高使用者的体验感，同时，还可以防止空气中的杂质进入纯水管303内，阻塞纯水管303。
可选地，水龙头300的开关、进水阀305和增压泵304电连接，打开水龙头300，进水阀305也被打开，增压泵304开始工作，复合滤芯100开始净化过滤水，操作简单、控制方便。
在本申请的一些实施例中，废水阀306为可调废水阀，通过调节废水阀306阀门的大小控制废水的流通量。大流量下水流流经废水阀306时容易冲走杂质，防止废水阀306失效。
可选地，废水阀306为累计制冲洗或待机冲洗，这样可以使得废水囤积到一定的程度后才得以流出，避免频繁开关而降低过滤效率，也避免杂质囤积，保证膜片袋23的使用寿命。当然，废水阀306还可以具有其他的实施例，这里不做限定。
本申请实施例净水器1000的其他构成例如增压泵304等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。
为了更好的理解本申请的内容，下面参考图1、图2、图14、图15描述根据本申请两个具体实施例的复合滤芯100的结构，参考图16描述根据本申请具体实施例的净水器1000的结构。
实施例1
在图2的示例中，中心分液膜管组2和水路转换盖组4同轴设置，水路转换盖组4位于中心分液膜管组2一端。中心分液膜管组2采用的RO膜(即反渗透膜)，水路转换盖组4内设置后置碳，二者上下布置。其中，后置碳为饼状，RO膜为卷制的螺旋状。
中心分液膜管组2、水路转换盖组4与壳体1的内壁之间限定出原水流道101。壳体1的顶端为瓶盖12，瓶盖12上设有原水进口121、纯水出口122、废水出口123，原水进口121从原水流道101的轴向一端流入，沿轴向冲刷中心分液膜管组2表面。
中心分液膜管组2由五叶的膜片袋23绕中心管组20卷制而成，相邻两个膜片袋23之间为外流道，每个膜片袋23内部为内流道。膜片袋23卷制后形成片状，类似于装米的袋子在清空米后压平形成的方形片。膜片袋23卷制形成的片四面均通过胶水密封，该RO膜水流从径向进水，流速更快，即使在高回收率3:1的情况下，RO膜也能保持较长的使用寿命。
中心管组20包括中心管21和废水集管22，水路转换盖组4上设有过滤水接管6和废水接管5，中心分液膜管组2与水路转换盖组4插接连接。
径向流入中心分液膜管组2的原水，能穿过膜片袋23流入中心管21的是过滤水，留下的则为废水流入废水集管22。过滤水在流经后置碳过滤后从纯水出口122排出，废水从废水出口123排出。
实施例2
在图15的示例中，中心分液膜管组2和水路转换盖组4同轴设置，水路转换盖组4位于中心分液膜管组2。中心分液膜管组2采用的RO膜(即反渗透膜)，RO膜外套 有前置过滤件24(前置滤筒)，前置过滤件24为两端敞开的筒形，前置过滤件24设置在内流道204及外流道203的外侧，原水流道101为环形且环绕在前置过滤件24的外侧。前置过滤件24可由无纺布、PP棉和碳纤维制成，可预先对原水进行净化过滤，有效拦截水中的铁屑、泥沙、有机物及余氯等。水路转换盖组4内设置后置过滤件7(后置碳)，后置过滤件7为饼状或者棒状的碳芯，后置过滤件7与RO膜上下布置。其中，后置碳为饼状，RO膜为卷制的螺旋状，RO膜卷制成多层薄膜组件。
中心分液膜管组2、水路转换盖组4与壳体1的内壁之间限定出原水流道101。壳体1的顶端为瓶盖12，瓶盖12上设有原水进口121、纯水出口122、废水出口123，原水进口121从原水流道101的轴向一端流入，沿轴向冲刷中心分液膜管组2表面。
中心分液膜管组2由五叶的膜片袋23绕中心管组20卷制而成，相邻两个膜片袋23之间为外流道203，每个膜片袋23内部为内流道204。膜片袋23卷制后形成片状，类似于装米的袋子在清空米后压平形成的方形片。膜片袋23卷制形成的片四面均通过胶水密封，该RO膜水流从径向进水，流速更快，即使在高回收率3:1的情况下，RO膜也能保持较长的使用寿命。
中心管组20包括中心管21和废水集管22，水路转换盖组4上设有过滤水接管6和废水接管5，中心分液膜管组2与水路转换盖组4插接连接。
径向流入中心分液膜管组2的原水，能穿过膜片袋23流入中心管21的是过滤水，留下的则为废水流入废水集管22。过滤水在流经后置碳过滤后从纯水出口122排出，废水从废水出口123排出。
实施例3
一种净水器1000，如图16所示，包括实施例1的复合滤芯100，还包括进水管301、废水管302、纯水管303、增压泵304、进水阀305、废水阀306、预过滤器307、高压开关308、单向阀309、水龙头300。
其中，进水管301连接壳体1上的原水进口121，废水管302连接壳体1上的废水出口123，纯水管303连接壳体1上的纯水出口122。增压泵304串联连接在进水管301上。进水阀305串联连接在进水管301上，进水阀305可控制进水管301的通断。废水阀306串联连接在废水管302上，废水阀306可控制废水管302的通断。
预过滤器307串联连接在进水管301上，且在复合滤芯100的上游(如进水阀305的上游)设置预过滤器307。预过滤器307包括前置滤壳和过滤网，前置滤壳可开合，过滤网可拆卸地设置在前置滤壳内。
高压开关308串联连接在纯水管303上，高压开关308与进水阀305电连接，高压开关308可以控制进水阀305，使得进水阀305关闭，从而使得净水器1000停止工作。 单向阀309串联连接在纯水管303上，防止复合滤芯100内逆流。水龙头300连接在纯水管303的末端，单向阀309设在水龙头300的上游，水龙头300的开关、进水阀305和增压泵304电连接，打开水龙头300，进水阀305也被打开，增压泵304开始工作，复合滤芯100开始净化过滤水。废水阀306为可调废水阀。
在本说明书的描述中，参考术语“一些实施例”、“一些示例”、“可选地”或“具体地”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 (26)

  1. 一种复合滤芯，其特征在于，包括：
    壳体，所述壳体上设有原水进口、纯水出口和废水出口；
    中心分液膜管组，所述中心分液膜管组设在所述壳体内，所述中心分液膜管组的外周壁与所述壳体之间限定出原水流道，所述原水进口连通所述原水流道，所述中心分液膜管组包括：中心管组和多个膜片袋，所述中心管组包括中心管和多个间隔开设置的废水集管，多个所述废水集管环绕所述中心管设置，所述中心管的管壁上设有过滤水入孔，所述废水集管的管壁上设有废水入孔，所述膜片袋具有位于所述中心管组内部的第一部分和位于所述中心管组外部的第二部分，每一所述废水集管和所述中心管被至少一个所述膜片袋的第一部分隔开，多个所述膜片袋的所述第二部分形成围绕在所述中心管组的周围的多层薄膜组件，所述中心管内限定出过滤水流通腔，所述废水集管内限定出废水流通腔；
    水路转换盖组，所述水路转换盖组设在所述壳体内，且盖在所述中心分液膜管组的轴向一端，所述水路转换盖组内设有废水导流道和过滤水导流道，所述废水导流道的两端分别连通所述废水流通腔、所述废水出口，所述过滤水导流道的两端分别连通所述过滤水流通腔、所述纯水出口；
    后置过滤件，所述后置过滤件设在所述过滤水导流道内。
  2. 根据权利要求1所述的复合滤芯，其特征在于，所述中心分液膜管组为柱形且具有周面和轴向两端的端面，所述周面与所述壳体的内壁之间限定出原水流道，所述端面上设有过滤水出孔和废水出孔，所述中心分液膜管组在两端所述端面上除所述过滤水出孔及所述废水出孔外均封装，所述中心分液膜管组内限定出过滤水流通腔和至少一个内流道，每个所述内流道的内端与所述过滤水流通腔相连通，每个所述内流道在远离所述过滤水流通腔的方向上沿螺旋线延伸，所述内流道的不同圈之间或者相邻两个所述内流道之间限定出外流道，所述内流道和所述外流道之间的间隔壁至少部分为过滤膜，所述内流道的外端被封装或者通过所述过滤膜与所述原水流道间隔，所述外流道的外端与所述原水流道连通，所述废水出孔对应所述外流道的内端设置，所述过滤水出孔对应所述过滤水流通腔设置。
  3. 根据权利要求2所述的复合滤芯，其特征在于，所述中心分液膜管组还包括前置过滤件，所述前置过滤件为两端敞开的筒形，所述前置过滤件设置在所述内流道及所述外流道的外侧，所述原水流道为环形且环绕在所述前置过滤件的外侧。
  4. 根据权利要求1或2或3所述的复合滤芯，其特征在于，所述壳体包括瓶体和瓶盖，所述瓶体的至少一端敞开，所述瓶盖连接在所述瓶体的端部以密封所述瓶体，所述原水进口、所述纯水出口和所述废水出口设在所述瓶盖上，所述水路转换盖组连接在所述瓶盖和 所述中心分液膜管组之间。
  5. 根据权利要求4所述的复合滤芯，其特征在于，所述瓶体仅一端敞开，所述水路转换盖组封装在所述中心分液膜管组的一端，所述瓶体内设有封板，所述封板封装在所述中心分液膜管组的另一端。
  6. 根据权利要求4或5所述的复合滤芯，其特征在于，所述水路转换盖组包括：
    水路转换进盖，所述水路转换进盖盖在所述中心分液膜管组的端部，所述水路转换进盖上设有连通所述废水流通腔的废水进口、及连通所述过滤水流通腔的过滤水进口；
    水路转换内出盖，所述水路转换内出盖盖在所述水路转换进盖上，所述水路转换内出盖与所述水路转换进盖之间限定出所述过滤水导流道，所述水路转换内出盖上设有连接所述纯水出口的内盖口；
    水路转换外出盖，所述水路转换外出盖盖在所述水路转换内出盖上，所述水路转换外出盖的外周沿与所述水路转换进盖相连，所述水路转换外出盖、所述水路转换内出盖与所述水路转换进盖之间限定出所述废水导流道，所述水路转换外出盖与所述水路转换内出盖之间限定出连接所述废水出口的外盖口。
  7. 根据权利要求6所述的复合滤芯，其特征在于，所述水路转换进盖的朝向所述中心分液膜管组的一侧设有废水接管和过滤水接管，所述废水接管的管口为所述废水进口，所述过滤水接管的管口为所述过滤水进口。
  8. 根据权利要求7所述的复合滤芯，其特征在于，所述中心管插接在所述过滤水接管上，所述废水接管为多个，多个所述废水集管一一对应地插接在多个所述废水接管上。
  9. 根据权利要求6或7或8所述的复合滤芯，其特征在于，所述水路转换进盖包括：
    进端半筒体，所述进端半筒体在朝向所述中心分液膜管组的一端敞开，所述废水进口、所述过滤水进口设在所述进端半筒体上，所述中心分液膜管组的一端配合在所述进端半筒体的内周侧，所述水路转换外出盖连接在所述进端半筒体的外周侧；
    出端半筒体，所述出端半筒体在远离所述中心分液膜管组的一端敞开，所述出端半筒体与所述进端半筒体之间间隔开，所述水路转换内出盖连接所述出端半筒体的周壁，所述出端半筒体上设有过滤水出口；
    筒体连管，所述筒体连管连接在所述进端半筒体和所述出端半筒体之间，所述筒体连管的一端连接所述过滤水进口、另一端连接所述过滤水出口。
  10. 根据权利要求6-9中任一项所述的复合滤芯，其特征在于，所述瓶盖上设有内接管和外接管，所述外接管外套在所述内接管上，所述水路转换内出盖连接在所述内接管上，所述水路转换外出盖连接在所述外接管上。
  11. 根据权利要求10所述的复合滤芯，其特征在于，所述水路转换外出盖在远离所述 中心分液膜管组的一端形成外端管，所述外端管套接在所述外接管上，所述外端管与所述外接管之间设有外密封圈；
    所述水路转换内出盖在远离所述中心分液膜管组的一端形成内端管，所述内端管套接在所述内接管上，所述内端管与所述内接管之间设有内密封圈。
  12. 根据权利要求6-11中任一项所述的复合滤芯，其特征在于，所述水路转换内出盖焊接连接在所述水路转换进盖上，所述水路转换外出盖胶粘连接在所述水路转换进盖上。
  13. 根据权利要求9-11中任一项所述的复合滤芯，其特征在于，所述进端半筒体、所述出端半筒体和所述筒体连管为一体成型件。
  14. 根据权利要求9-11中任一项所述的复合滤芯，其特征在于，所述进端半筒体的径向尺寸大于所述出端半筒体的径向尺寸。
  15. 根据权利要求1-14中任一项所述的复合滤芯，其特征在于，所述过滤水导流道与所述中心分液膜管组同轴设置，所述废水导流道外套在所述过滤水导流道的外侧。
  16. 根据权利要求1-15中任一项所述的复合滤芯，其特征在于，所述后置过滤件为饼状或者棒状的碳芯。
  17. 根据权利要求1-16中任一项所述的复合滤芯，其特征在于，所述壳体包括瓶体和瓶盖，所述瓶盖盖合在所述盖体上，所述中心分液膜管组设在所述瓶体内，所述水路转换盖组连接在所述瓶盖上，所述水路转换盖组相对所述瓶盖可转动。
  18. 根据权利要求1-17中任一项所述的复合滤芯，其特征在于，多个所述膜片袋沿同向螺旋卷制形成多层薄膜组件，所述膜片袋的袋壁为所述过滤膜，所述膜片袋的内部构成所述内流道，相邻所述膜片袋之间构成所述外流道；所述多层薄膜组件上卷制有前置滤筒。
  19. 一种净水器，其特征在于，包括：
    复合滤芯，所述复合滤芯为根据权利要求1-18中任一项所述的复合滤芯；
    进水管，所述进水管连接所述壳体上的所述原水进口；
    废水管，所述废水管连接所述壳体上的所述废水出口；
    纯水管，所述纯水管连接所述壳体上的所述纯水出口；
    增压泵，所述增压泵串联连接在所述进水管上；
    进水阀，所述进水阀串联连接在所述进水管上；
    废水阀，所述废水阀串联连接在所述废水管上。
  20. 根据权利要求19所述的净水器，其特征在于，还包括：预过滤器，所述预过滤器串联连接在所述进水管上。
  21. 根据权利要求20所述的净水器，其特征在于，所述预过滤器连接在所述进水阀的上游。
  22. 根据权利要求20所述的净水器，其特征在于，所述预过滤器包括：前置滤壳和过滤网，所述前置滤壳可开合，所述过滤网可拆卸地设置在所述前置滤壳内。
  23. 根据权利要求19-22中任一项所述的净水器，其特征在于，还包括：串联连接在所述纯水管上的高压开关，所述高压开关与所述进水阀电联结。
  24. 根据权利要求19-23中任一项所述的净水器，其特征在于，还包括：串联连接在所述纯水管上的单向阀。
  25. 根据权利要求19-24中任一项所述的净水器，其特征在于，还包括：连接在所述纯水管的末端的水龙头。
  26. 根据权利要求19-25中任一项所述的净水器，其特征在于，所述废水阀为可调废水阀，所述废水阀为累计制冲洗或待机冲洗。
PCT/CN2019/114560 2018-10-31 2019-10-31 复合滤芯和净水器 WO2020088562A1 (zh)

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CN201811288955.6A CN111115867A (zh) 2018-10-31 2018-10-31 净水器
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