Composite filter element assembly and water purifier comprising same

Abstract

The utility model relates to the field of water purifiers, and discloses a composite filter element assembly and a water purifier comprising the composite filter element assembly, the water purifier comprises the composite filter element assembly, the composite filter element assembly comprises an outer shell, an inner shell arranged in the outer shell, a filter element I, a filter element III, an outer pipe and an inner pipe, the inner shell comprises an integrally formed inner shell body, the inner shell body is provided with a partition plate, and the partition plate is arranged in the inner shell body. The first filter element and the third filter element are arranged on the two sides of the partition plate in the axial direction and are sealed and isolated, the outer pipe penetrates through the inner pipe, the inner pipe is arranged in the outer pipe, and an inlet and an outlet of the third filter element are communicated with a connector in the shell through the outer pipe and the inner pipe; one filter element is directly mounted on the inner shell body, so that the number of parts of the composite filter element assembly can be reduced; the shell comprises a shell end cover and a shell body, the connector is arranged on the shell end cover, and the shell can be replaced without replacing the shell body; and the processing cost is reduced. The third filter element comprises granular filtering materials, and the inner pipe and the outer pipe are communicated with the two ends of the third filter element in the axial direction, so that filtering is sufficient.

Description

TECHNICAL FIELD

[0001] The utility model relates to water purifier field especially relates to a composite filter element assembly. BACKGROUND

[0002] In part water purifier, will install two filter elements in a shell, in order to realize the installation of two filter elements, the structure in the shell is often set relatively complex, and processing is inconvenient. INNOVATION CONTENT

[0003] The utility model solves the technical problem to overcome the complex structure and the inconvenient processing caused by the integration of two filter elements in a shell in the prior art, and provides a composite filter element assembly and a water purifier comprising the same.

[0004] The utility model solves the above technical problem through the following technical scheme:

[0005] A composite filter element assembly comprises:

[0006] A shell defines a first cavity inside, and is provided with a plurality of connecting ports at one end along the axial direction of the composite filter element assembly;

[0007] An inner shell is arranged in the first cavity and comprises an integrally formed inner shell body, which has a radial direction extending partition plate;

[0008] Two filter elements are arranged on both sides of the partition plate along the axial direction and are sealed and isolated from each other, and are filter element one and filter element three arranged in sequence in the direction away from the connecting port respectively, at least one of the filter elements is directly installed on the inner shell body, the first channel penetrating along the axial direction is arranged in the filter element one, and the inlet and outlet of the filter element one are connected to different connecting ports;

[0009] An outer tube is sealingly arranged in the first channel;

[0010] An inner tube is sealingly arranged in the outer tube, the inner surface of the outer tube and the outer surface of the inner tube, and the inner surface of the inner tube define an inflow channel and an outflow channel respectively, and the inlet of the filter element three is connected to the inflow channel, and the outlet of the filter element three is connected to the outflow channel.

[0011] In the scheme, the filter element one and the filter element three are arranged in one shell, which can reduce the number of shells, compact the structure and reduce the manufacturing cost.

[0012] The outer tube penetrates the filter element one, and the inner tube is arranged in the outer tube to connect the inlet and outlet of the filter element three to the corresponding connecting ports respectively, so that the structure is simple.

[0013] The inner shell is used to realize the sealed isolation of the filter element one and the filter element three, and by directly mounting one filter element on the inner shell body, the number of parts of the composite filter element assembly can be reduced, and the convenience of processing and assembly is improved.

[0014] Preferably, the inner shell further comprises an inner shell end cover, the inner shell body has a ring part one extending axially from the outer side of the partition plate, and the inner shell end cover covers the end of the ring part one away from the partition plate to jointly define a second cavity with the partition plate and the ring part one, and one of the filter elements is arranged in the second cavity to be sealed and isolated from another of the filter elements.

[0015] In the scheme, the second cavity is formed by the inner shell end cover, the ring part one and the partition plate to seal and isolate the two filter elements in and out of the second cavity.

[0016] Preferably, the composite filter element assembly further comprises a cover one arranged axially between the filter element three and the partition plate, the cover one and the filter element three are located in the second cavity, the filter element three has a third channel extending axially therein, the inlet of the filter element three is arranged on the outer circumferential side of the filter element three, and the outlet is arranged on the wall surface of the third channel.

[0017] A flow channel is formed between the partition plate and the surface of the cover one to connect the inflow channel and the inlet of the filter element three.

[0018] The outflow channel is defined in the inner tube, the middle part of the partition plate is provided with an opening for inserting the inner tube, and the cover one is provided with an opening to connect the outlet of the filter element three and the outflow channel.

[0019] In the scheme, the filter element three has a simple structure.

[0020] Preferably, the filter element three is arranged in the second cavity, the filter element three comprises a filter part composed of granular filter material, the inner tube and the outer tube, one of which extends into the second cavity and extends to the end of the filter part axially away from the connecting port and communicates with the filter part, and the other of which communicates with the end of the filter part axially toward the connecting port.

[0021] In the scheme, the inner tube and the outer tube respectively communicate with the two ends of the filter part axially to make the fluid flow through a long path in the filter part and be fully filtered.

[0022] Preferably, the inner shell body has a ring part two and / or a ring part three, the ring part two and / or the ring part three extend axially from the outer side and the middle part of the partition plate respectively, and the filter element directly mounted on the inner shell body is arranged in the ring part two axially toward the end of the partition plate and / or is sleeved outside the ring part three and is directly mounted on the partition plate.

[0023] In the scheme, the ring part two and the ring part three are used for radial positioning of the filter element, and the partition plate is used for axial positioning of the filter element.

[0024] Preferably, the partition plate has a mounting part inside the ring part three, the filter element one is directly mounted on the partition plate, and the outer tube abuts against the mounting part at an end away from the connecting port in the axial direction, and the ring part three is sealed by the sealing element.

[0025] Preferably, the filter element one is directly mounted on the inner shell body.

[0026] The composite filter element assembly further comprises a cover two arranged in the first cavity and mounted on the shell, the cover two covers an end of the filter element one away from the connecting port in the axial direction, the cover two is provided with an opening for the outer tube to pass through, and the inlet of the filter element one is arranged on the outer circumferential side of the filter element one, and the outlet is arranged on the wall surface of the first channel.

[0027] A flow channel is defined between the surface of the cover two and the inner surface of the shell to connect the inlet and outlet of the filter element one and the corresponding connecting port.

[0028] The outlet of the filter element one and the corresponding connecting port are connected through the first channel.

[0029] In the scheme, the structure of the filter element one and the inlet and outlet flow channels are simple.

[0030] Preferably, the shell comprises a shell body and a shell end cover, the shell end cover is capped on one end of the shell body in the axial direction, and the shell end cover and the shell body jointly form the first cavity, and the connecting port is arranged on the shell end cover.

[0031] In the scheme, the shell is divided into a shell end cover and a shell body, so that the filter element one and the filter element three can be loaded into the shell body, and then the shell end cover is closed.

[0032] The shell end cover can be replaced according to different connecting ports without replacing other parts, or the end cover can be replaced according to different filter elements and other structures without replacing the shell body, so that the convenience of processing and manufacturing can be improved, and the cost can be reduced.

[0033] Preferably, the shell is provided with four recesses arranged in sequence and sealed from each other at an end of the shell away from the connecting port in the axial direction, and the four recesses respectively connect the inlet or outlet of one of the filter elements and the corresponding connecting port.

[0034] In the scheme, the structure is simple and compact, and the processing is convenient.

[0035] Preferably, the connecting ports are arranged on the peripheral surface of the shell, and the shell is provided with a radial channel for connecting the grooves and the corresponding connecting ports.

[0036] In this scheme, the pipe and the connecting port are connected from the peripheral side of the shell, so that the axial structure of the composite filter element assembly is compact, and the installation convenience is improved.

[0037] Preferably, the inner pipe is provided with a protrusion outside to abut against the inner surface of the outer pipe.

[0038] In this scheme, the inner pipe and the outer pipe can be positioned relative to each other, which on the one hand can simplify the positioning structure of the inner pipe and the outer pipe in the shell, improve the convenience of processing the composite filter element assembly, and on the other hand, the inner pipe and the outer pipe can be assembled together and then installed in the shell, so that the positioning of one of the inner pipe and the outer pipe can complete the positioning of the other, thereby improving the convenience of assembling the composite filter element assembly.

[0039] A composite filter element assembly comprises:

[0040] A shell comprises a shell end cover and a shell body, the shell end cover covers one end of the shell body along the axial direction of the composite filter element assembly, and together with the shell body defines a first cavity, and the shell end cover is provided with a plurality of connecting ports;

[0041] Two filter elements, filter element one and filter element three, are arranged in the first cavity in the direction away from the shell end cover along the axial direction and are sealed and isolated from each other, the filter element one is provided with a first channel penetrating along the axial direction, and the inlet and outlet of the filter element one are connected to different connecting ports;

[0042] An outer pipe is sealingly arranged in the first channel;

[0043] An inner pipe is sealingly arranged in the outer pipe, the inner surface of the outer pipe and the outer surface of the inner pipe define an inflow channel, the inside of the inner pipe defines an outflow channel, and the inlet of the filter element three is connected to the inflow channel and the outlet of the filter element three is connected to the outflow channel.

[0044] In this scheme, by arranging the filter element one and the filter element three in one shell, the number of shells can be reduced, the structure is compact, and the manufacturing cost can be reduced.

[0045] The outer pipe passes through the filter element one, and the inner pipe is arranged in the outer pipe to connect the inlet and outlet of the filter element three to the corresponding connecting ports, and the structure is simple.

[0046] The shell is divided into a shell end cover and a shell body, so that the filter element one and the filter element three can be installed in the shell body and then closed by the shell end cover.

[0047] The shell end cover can be replaced according to different connection ports without replacing other parts, or the shell end cover can be replaced according to different filter cartridges and other structures without replacing the shell body, so that the manufacturing convenience can be improved, and the cost can be reduced.

[0048] A composite filter cartridge assembly comprises:

[0049] A shell defines a first cavity inside, and is provided with a plurality of connection ports at one end in the axial direction of the composite filter cartridge assembly;

[0050] An inner shell is arranged in the first cavity and defines a second cavity inside;

[0051] Two filter cartridges, filter cartridge one and filter cartridge three, are arranged in sequence in the axial direction away from the connection ports, the filter cartridge one is arranged in the first cavity and outside the second cavity, and is provided with a first passage penetrating in the axial direction inside, the inlet and outlet of the filter cartridge one are connected to different connection ports, and the filter cartridge three comprises a filter part arranged in the second cavity, and the filter part is composed of granular filter material;

[0052] An outer tube is sealingly arranged in the first passage;

[0053] An inner tube is sealingly arranged in the outer tube;

[0054] The inner tube and the outer tube are respectively connected to both ends of the filter part in the axial direction and correspondingly connected to different connection ports.

[0055] In the scheme, the filter cartridge one and the filter cartridge three are arranged in one shell, so that the number of shells can be reduced, the structure is compact, and the manufacturing cost can be reduced.

[0056] The outer tube passes through the filter cartridge one, and the inner tube is arranged in the outer tube to respectively connect the inlet and outlet of the filter cartridge three and the corresponding connection ports, so that the structure is simple.

[0057] The inner tube and the outer tube are respectively connected to both ends of the filter part in the axial direction, so that the fluid flows through a long path in the filter part and is fully filtered.

[0058] Preferably, the inner tube sealingly extends into the second cavity and is connected to one end of the filter part away from the connection ports in the axial direction, and the inner shell is provided with an opening at one end in the axial direction toward the connection ports to connect one end of the filter part toward the connection ports in the axial direction and the outer tube.

[0059] In the scheme, the inner tube is arranged to extend into the second cavity to connect one end of the filter part away from the connection ports, so that the space for arranging the filter part in the second cavity is reduced, so that the filter part can be arranged larger to improve the filtering effect.

[0060] Preferably, the inner shell is provided with a protrusion on the wall surface of the end axially away from the connecting port, the inner tube abuts against the protrusion of the inner shell in the axial direction, and the outer periphery of the protrusion is provided with an opening to communicate the end of the filter part axially away from the connecting port and the inner tube.

[0061] Preferably, the end of the inner shell axially towards the connecting port has two ring parts that are sleeved and connected to each other, and a communication opening is formed between the two ring parts to communicate the end of the filter part axially towards the connecting port and the outer tube.

[0062] A water purifier comprising the composite filter assembly of any of the above technical solutions, the inlets and outlets of the two filter cartridges are communicated through the corresponding connecting ports to form parallel or series connection.

[0063] In this solution, the filter cartridge one and the filter cartridge three form series or parallel connection.

[0064] Preferably, the water purifier further comprises a filter cartridge two arranged outside the outer shell.

[0065] The two filter cartridges are connected in series through the filter cartridge two; or the two filter cartridges are connected in parallel to form a parallel body, and the parallel body is connected in series with the filter cartridge two.

[0066] In this solution, the filter cartridge two is arranged outside the outer shell, which facilitates to set the size of the filter cartridge two larger for main filtration, and the filter cartridge one and the filter cartridge three are arranged in the same outer shell, which can be made smaller for simple filtration.

[0067] The positive progress effect of the utility model lies in:

[0068] In this solution, by arranging the filter cartridge one and the filter cartridge three in one outer shell, the number of outer shells can be reduced, the structure is compact, and the manufacturing cost can be reduced.

[0069] The outer tube passes through the filter cartridge one, and the inner tube is arranged in the outer tube to respectively communicate the inlet and outlet of the filter cartridge three and the corresponding connecting ports, and the structure is simple.

[0070] The inner shell is used to realize the sealing isolation of the filter cartridge one and the filter cartridge three, and by directly arranging one filter cartridge on the inner shell body, the number of parts of the composite filter assembly can be reduced, and the processing and assembly convenience can be improved.

[0071] The outer shell is divided into an outer shell end cover and an outer shell body, so as to facilitate the assembly of the filter cartridge one and the filter cartridge three into the outer shell body and then the sealing of the outer shell end cover. According to the different connecting ports, the outer shell end cover can be replaced without replacing other parts, or according to the different filter cartridges and other structures, the outer shell end cover can be replaced without replacing the outer shell body, so that the processing and manufacturing convenience can be improved, and the cost can be reduced.

[0072] The inner and outer pipes are connected to both ends of the filter section along the axial direction, so that the fluid has a long flow path in the filter section and the filtration is thorough. Attached Figure Description

[0073] Figure 1 This is a schematic diagram of the water purifier in Example 1;

[0074] Figure 2 This is a schematic diagram of the composite filter element assembly in Example 2;

[0075] Figure 3 This is a cross-sectional view of the outer casing of Example 2;

[0076] Figure 4 This is a cross-sectional view of the outer casing end cap of Example 2;

[0077] Figure 5 This is an exploded cross-sectional view of the composite filter assembly in Example 2;

[0078] Figure 6 This is a cross-sectional view of the inner shell of Example 2;

[0079] Figure 7 This is a schematic diagram of the inlet and outlet water of filter element 1 in Example 2;

[0080] Figure 8 This is a schematic diagram of the three inlet and outlet water inlet of the filter element in Example 2;

[0081] Figure 9 for Figure 7 Enlarged view of a portion of the image;

[0082] Figure 10 This is a schematic diagram of the composite filter element assembly in Example 3;

[0083] Figure 11 This is an exploded cross-sectional view of the composite filter assembly in Example 3;

[0084] Figure 12 This is a schematic diagram of the inlet and outlet water of filter cartridges 1 and 3 in Example 3;

[0085] Figure 13 for Figure 12 Enlarged view of a portion of the image;

[0086] Figure 14 Sectional view of the end cap of the outer casing Figure 1 ;

[0087] Figure 15 Sectional view of the end cap of the outer casing Figure 2 ;

[0088] Figure 16 This is a schematic diagram of the composite filter element assembly in Example 4;

[0089] Figure 17The schematic diagram of water inlet and outlet of filter core one and filter core three in example 4;

[0090] Figure 18 The schematic diagram of water inlet and outlet of filter core one and filter core three in example 4; Figure 16 The enlarged view of the middle part;

[0091] Figure 19 The sectional view of inner shell, inner tube and outer tube in example 4;

[0092] Figure 20 The sectional view of inner shell in example 4.

[0093] Explanation of reference signs:

[0094] Water purifier 10000;

[0095] Composite filter core assembly 1000;

[0096] Housing 1, housing body 11, holding part 111, housing end cover 12, connecting port one 121, connecting port two 122, connecting port three 123, connecting port four 124, first cavity 13, groove one 141, groove two 142, groove three 143, groove four 144;

[0097] Inner shell 2, inner shell body 21, partition plate 211, mounting part 2111, ring part one 212, ring part two 213, ring part three 214, ring part four 215, communication opening 216, inner shell end cover 22, positioning protrusion 221, second cavity 23;

[0098] Filter core one 3, first inlet 31, first outlet 32, first channel 33;

[0099] Filter core three 4, third inlet 41, third outlet 42, third channel 43;

[0100] Outer tube 5, inflow channel 51;

[0101] Inner tube 6, outflow channel 61, centering protrusion 62;

[0102] Cover one 71, cover two 72, cover three 73;

[0103] Filter core two 2000, second inlet 2001, second outlet 2002. DETAILED DESCRIPTION

[0104] The utility model will be further illustrated by way of examples below, but the utility model is not limited in the scope of the examples.

[0105] Example 1

[0106] The utility model provides a water purifier, Figure 1 The schematic diagram of water inlet and outlet of filter core one and filter core three in example 4;

[0107] As Figure 1 , the water purifier 10000 includes three filter cartridges, filter cartridge one 3, filter cartridge two 2000, filter cartridge three 4, which can be but not limited to activated carbon, the inlets and outlets of the three filter cartridges are respectively the first inlet 31 and the first outlet 32, the second inlet 2001 and the second outlet 2002, and the third inlet 41 and the third outlet 42. Among them, the filter cartridge one 3 and the filter cartridge three 4 are integrated in a shell 1 to form a composite filter cartridge assembly 1000, and the filter cartridge two 2000 is arranged outside the shell 1. The shell 1 is provided with four connecting ports, namely connecting port one 121, connecting port two 122, connecting port three 123 and connecting port four 124, to respectively communicate the inlets and outlets of the filter cartridge one 3 and the filter cartridge three 4. Specifically, the connecting port one 121, the first inlet 31, the first outlet 32, the connecting port two 122, the second inlet 2001, the second outlet 2002, the connecting port three 123, the third inlet 41, the third outlet 42 and the connecting port four 124 are sequentially communicated, so that the filter cartridge one 3, the filter cartridge two 2000 and the filter cartridge three 4 are sequentially connected in series to purify the fluid three times. The communication of each connecting port with the inlet and outlet of the filter cartridge is shown by a dashed line in the figure, and the arrow direction of the dashed line represents the flow direction of the fluid during the purification process. It can be understood that, Figure 1 The three filter cartridges are mainly used to illustrate the communication of the three filter cartridges, and do not limit the specific arrangement mode and position of the four connecting ports and the inlets and outlets of the filter cartridges.

[0108] In the utility model, the filter cartridge one 3 and the filter cartridge three 4 are arranged in a shell 1, which can reduce the number of shells 1, compact the structure and reduce the manufacturing cost. The filter cartridge two 2000 is arranged outside the shell 1, which facilitates the filter cartridge two 2000 to be set to a larger size for main filtration, and the filter cartridge one 3 and the filter cartridge three 4 are arranged in the same shell 1, which can be set to a smaller size for simple filtration.

[0109] In other embodiments, the filter cartridge two 2000 can not be arranged, and the connecting port two 122 and the connecting port three 123 are communicated or the connecting port four 124 and the connecting port one 121 are communicated to realize the series connection of the filter cartridge one 3 and the filter cartridge three 4. When the filter cartridge one 3 and the filter cartridge three 4 are connected in series, the connecting port two 122 and the connecting port three 123 can be arranged to be close to each other or be arranged as one connecting port, and the connecting port one 121 and the connecting port four 124 can be arranged to be close to each other or be arranged as one connecting port, and the connecting ports are close to each other, which facilitates the pipeline communication.

[0110] In other embodiments, the connection port one 121 and the connection port three 123 can be connected or set as one connection port, the connection port two 122 and the connection port four 124 can be connected or set as one connection port, to realize the parallel connection of the filter element one 3 and the filter element three 4 to form a parallel body; when there is no filter element two 2000, the connection port two 122 and the connection port four 124 can be directly connected and then connected to the outlet of the water purifier 10000; when there is a filter element two 2000, the connection port two 122 and the connection port four 124 can be connected and then connected to the second inlet 2001 of the filter element two 2000, so that the parallel body is connected in series upstream of the filter element two 2000, or the connection port one 121 and the connection port three 123 are connected and then connected to the second outlet 2002 of the filter element two 2000, so that the parallel body is connected in series downstream of the filter element two 2000. When the filter element one 3 and the filter element three 4 are connected in parallel, the connection port one 121 and the connection port three 123 can be arranged close to each other, and / or the connection port two 122 and the connection port four 124 can be arranged close to each other, to facilitate the connection of the pipeline.

[0111] Embodiment 2

[0112] The embodiment provides a composite filter element assembly used in a water purifier. The other structures of the water purifier can refer to those in Embodiment 1 and other embodiments or existing water purifiers. Figures 2-9 The embodiment is a schematic view.

[0113] As Figures 2-5 The axial direction of the composite filter element assembly 1000 is the L direction. The composite filter element assembly 1000 comprises an outer shell 1, an inner shell 2, two filter elements, an outer pipe 5, and an inner pipe 6.

[0114] The outer shell 1 defines a first cavity 13 therein. The outer shell 1 is provided with a plurality of connection ports at one end in the L direction. The direction of the connection ports in the L direction is the L1 direction, and the direction away from the connection ports is the L2 direction.

[0115] The inner shell 2 is arranged in the first cavity 13. The inner shell 2 comprises an integrally formed inner shell body 21, which can be integrally formed by, but not limited to, casting, machining, etc. The inner shell body 21 has a partition plate 211 extending in the radial direction.

[0116] The two filter elements are arranged in the first cavity 13, which are a filter element one 3 and a filter element three 4. The filter element one 3 and the filter element three 4 are arranged in sequence in the L2 direction and are sealed and isolated from each other on both sides of the partition plate 211. The filter element one 3 is directly mounted on the inner shell body 21. The first inlet 31 and the first outlet 32 of the filter element one 3 are connected to different connection ports. The filter element one 3 is provided with a first channel 33 penetrating in the L direction. Figure 7 The dotted line with arrows shows the flow path of fluid entering and exiting the filter element one 3.

[0117] The outer tube 5 is sealingly arranged in the first channel 33, and the inner tube 6 is sealingly arranged in the outer tube 5. The inner surface of the inner tube 6 defines an outflow channel 61, and the inner surface of the outer tube 5 and the outer surface of the inner tube 6 define an inflow channel 51. The third inlet 41 of the filter element three 4 communicates with different connection ports through the inflow channel 51, and the third outlet 42 of the filter element three 4 communicates with different connection ports through the outflow channel 61. Figure 8 The flow path of the fluid in and out of the filter element three 4 is schematically shown by the dashed arrow.

[0118] By arranging the filter element one 3 and the filter element three 4 in one housing 1, the number of housings 1 can be reduced, the structure is compact, and the manufacturing cost can be reduced. By arranging the outer tube 5 through the filter element one 3 and arranging the inner tube 6 in the outer tube 5 to respectively communicate the third inlet 41 of the filter element three 4 and the corresponding connection port and the third outlet 42 of the filter element three 4 and the corresponding connection port, the structure is simple. The inner shell 2 is used to realize the sealing isolation of the filter element one 3 and the filter element three 4. By directly mounting the filter element one 3 on the inner shell body 21, the number of parts of the composite filter element assembly 1000 can be reduced, and the processing and assembly convenience can be improved.

[0119] Specifically, as Figure 4 , the number of connection ports in the embodiment is four, which are connection port one 121, connection port two 122, connection port three 123, and connection port four 124, which respectively correspond to the first inlet 31, the first outlet 32, the third inlet 41, and the third outlet 42. In other embodiments, if the filter element one 3 and the filter element three 4 are connected in series or in parallel, two connection ports can be arranged.

[0120] As Figure 5 , Figure 9 , the inner shell 2 further includes an inner shell end cover 22, and the inner shell body 21 has a ring part one 212 extending from the outer side of the partition plate 211 along the L2 direction. The inner shell end cover 22 covers the end of the ring part one 212 away from the partition plate 211. The inner shell end cover 22, the partition plate 211, and the ring part one 212 together define a second cavity 23. The filter element three 4 is arranged in the second cavity 23 to be sealingly isolated from the filter element one 3. In other embodiments, the ring part one 212 can be arranged to extend along the L1 direction to form the second cavity 23. The filter element one 3 is arranged in the second cavity 23. At this time, an opening can be arranged on the inner shell end cover 22 for the outer tube 5 to pass through.

[0121] As Figure 5 , Figure 9 , the composite filter element assembly 1000 further includes a cover one 71 arranged in the second cavity 23. The cover one 71 is arranged between the filter element three 4 and the partition plate 211 along the L direction. The filter element three 4 has a third channel 43 extending in the axial direction. The third inlet 41 of the filter element three 4 is arranged on the outer circumferential side of the filter element three 4, and the third outlet 42 is arranged on the wall surface of the third channel 43. Figure 8 , as Figure 9A flow channel is formed between the surface of the partition 211 and the cover 71 to connect the inflow channel 51 and the third inlet 41 of the filter element 3; the inner tube 6 is inserted into the opening in the middle of the partition 211, and the cover 71 is provided with an opening to connect the third outlet 42 of the filter element 3 and the outflow channel 61.

[0122] like Figures 5-7 , Figure 9 The inner shell body 21 has a second ring 213 and a third ring 214. The second ring 213 extends from the outside of the partition 211 along the L1 direction, and the third ring 214 extends from the middle of the partition 211 along the L1 direction. The filter element 3 is directly mounted on the partition 211. One end of the filter element 3 facing the L2 direction is disposed inside the second ring 213 and sleeved on the outside of the third ring 214. The second ring 213 and the third ring 214 are used for radial positioning of the filter element 3, and the partition 211 is used for axial positioning of the filter element 3.

[0123] like Figure 6 , Figure 9 The partition 211 has a mounting part 2111 located inside the ring part 214. One end of the outer tube 5 facing the L2 direction abuts against the mounting part 2111. The outer tube 5 and the ring part 214 are sealed by a sealing ring or other sealing element.

[0124] like Figure 5 , Figure 9 The composite filter element assembly 1000 also includes a second cover 72, which is disposed in the first cavity 13 and mounted on the outer shell 1. The second cover 72 covers the end of the filter element 3 facing the L1 direction. The second cover 72 has an opening for the outer tube 5 to pass through. The first inlet 31 of the filter element 3 is located on the outer periphery of the filter element 3, and the first outlet 32 ​​is located on the wall of the first channel 33. A flow channel is defined between the surface of the second cover 72 and the inner surface of the outer shell to connect the first inlet 31 and the connection port 121. The first outlet 32 ​​of the filter element 3 and the connection port 122 are connected through the first channel 33.

[0125] like Figure 2 The outer casing 1 includes an outer casing body 11 and an outer casing end cap 12. The outer casing end cap 12 covers the end of the outer casing body 11 facing the L1 direction. The outer casing end cap 12 and the outer casing body 11 together form a first cavity 13, so that filter element 3 and filter element 4 can be installed into the outer casing body 11 and then closed by the outer casing end cap 12. The connection port is provided on the outer casing end cap 12. Depending on the different connection port settings, the outer casing end cap 12 can be replaced without replacing other parts, or the outer casing body 11 can be replaced without replacing the outer casing end cap 12 depending on the different structures of the filter element, etc., thereby improving the convenience of processing and manufacturing and reducing costs.

[0126] like Figure 4The outer casing 1 has four sequentially fitted and mutually sealing grooves at one end of the connecting port along the axial direction. These are groove 141, groove 242, groove 343, and groove 444, which correspond to connecting port 121 and the first opening, connecting port 222 and the second opening, connecting port 323 and the third opening, and connecting port 444 and the fourth opening. Grooves 141, 142, and 143 are all annular, while groove 444 is circular.

[0127] like Figure 9 One end of the inner tube 6 facing L1 is inserted into the groove 144 and abuts against the outer shell 1 and is sealed by a sealing ring. The other end facing L2 passes through the partition 211 and is inserted into the groove in the middle of the cover 71 and is sealed by a sealing ring. One end of the outer tube 5 facing L1 is inserted into the groove 143 and abuts against the outer shell 1 and is sealed by a sealing ring. The other end facing L2 is inserted into the ring 214 and abuts against the mounting part 2111 and is sealed by a sealing ring. This allows the outer tube 5 and the inner tube 6 to be installed inside the outer shell 1. One end of the cover 72 facing L1 is inserted into the groove 142 and abuts against the outer shell 1 and is sealed by a sealing ring. The cover 72, filter element 3, and partition 211 are sequentially fixedly connected along the L direction. The cover 71 abuts against the inner tube 6. The cover 71, filter element 4, and inner shell end cap 22 are sequentially fixedly connected along the L direction. The inner shell end cap 22 and the outer shell 1 abut against each other along the L direction. This allows the filter element 3 and filter element 4 to be installed inside the outer shell.

[0128] like Figure 2 , Figure 4 The connection port is located on the peripheral surface of the housing 1. The housing 1 has a radially extending channel to connect the groove and the corresponding connection port, which facilitates the connection of pipes and connection ports from the peripheral side of the housing 1, thereby making the axial structure of the composite filter element assembly 1000 compact and improving the ease of installation.

[0129] like Figure 5 , Figure 9 The inner tube 6 has a centering protrusion 62 on its outer side to abut against the inner surface of the outer tube 5, so that the inner tube 6 and the outer tube 5 can be positioned relative to each other. On the one hand, this simplifies the positioning structure of the inner tube 6 and the outer tube 5 in the outer shell 1 and improves the processing convenience of the composite filter element assembly 1000. On the other hand, the inner tube 6 and the outer tube 5 can be assembled together and then installed in the outer shell 1. Positioning one of the inner tube 6 and the outer tube 5 is sufficient to position the other, thereby improving the assembly convenience of the composite filter element assembly 1000.

[0130] Example 3

[0131] This embodiment provides a composite filter element assembly for use in a water purifier. Other structures of the water purifier can refer to Embodiment 1 and other embodiments or existing water purifiers. Figures 10-15 This is a schematic diagram of this embodiment.

[0132] As Figures 10-13 , the composite filter element assembly 1000 comprises a shell 1, two filter elements, an outer tube 5, and an inner tube 6.

[0133] The shell 1 defines a first cavity 13 therein, and comprises a shell body 11 and a shell end cover 12, the shell end cover 12 being capped to one end of the shell body 11 along the L direction, and the shell end cover 12 and the shell body 11 jointly form the first cavity 13, and the shell end cover 12 is provided with a plurality of connection ports;

[0134] The two filter elements are arranged in the first cavity 13 and are sealed and isolated from each other, and are filter element one 3 and filter element three 4 arranged in sequence along the L2 direction respectively; wherein the first inlet 31 and the first outlet 32 of the filter element one 3 are communicated with different connection ports, and the filter element one 3 is provided with a first channel 33 penetrating along the L direction;

[0135] The outer tube 5 is sealingly arranged in the first channel 33, and the inner tube 6 is sealingly arranged in the outer tube 5, the inner surface of the inner tube 6 defines an outflow channel 61, and the inner surface of the outer tube 5 and the outer surface of the inner tube 6 define an inflow channel 51, the third inlet 41 of the filter element three 4 is communicated with different connection ports through the inflow channel 51, and the third outlet 42 of the filter element three 4 is communicated with different connection ports through the outflow channel 61, Figure 12 The flow path of the fluid into and out of the filter element one 3 and the filter element three 4 is schematically shown by the dashed line with an arrow.

[0136] By arranging the filter element one 3 and the filter element three 4 in one shell 1, the number of shells 1 can be reduced, the structure is compact, and the manufacturing cost can be reduced. By arranging the outer tube 5 through the filter element one 3 and arranging the inner tube 6 in the outer tube 5 to respectively communicate the inlet and the corresponding connection port and the outlet and the corresponding connection port of the filter element three 4, the structure is simple. The shell 1 is divided into the shell end cover 12 and the shell body 11, so as to facilitate the assembly of the filter element one 3 and the filter element three 4 into the shell body 11 and then the sealing of the shell end cover 12. According to different connection ports, the shell end cover 12 can be replaced without replacing other parts, or according to different filter elements and other structures, the end cover can be replaced without replacing the shell body 11, so as to improve the convenience of processing and manufacturing and reduce the cost.

[0137] Specifically, as Figure 10 , Figure 14 , Figure 15 , the number of connection ports in the embodiment is four, which are connection port one 121, connection port two 122, connection port three 123, and connection port four 124, which are communicated one by one with the first inlet 31, the first outlet 32, the third inlet 41, and the third outlet 42. In other embodiments, if the filter element one 3 and the filter element three 4 are connected in series or in parallel, two connection ports can be provided.

[0138] As Figure 10 ,Figures 13-15 The outer shell 1 has four grooves that are sequentially fitted and mutually sealed and isolated at one end of the connecting port along the axial direction. These grooves are groove 141, groove 2142, groove 3143, and groove 4144, which are connected to connecting port 121 and the first opening, connecting port 2122 and the second opening, connecting port 3123 and the third opening, and connecting port 4124 and the fourth opening, respectively.

[0139] like Figure 11 , Figure 13 The composite filter assembly 1000 also includes an inner shell 2 disposed within the first cavity 13, and a second cavity 23 disposed within the inner shell 2. The third filter element 4 is disposed within the second cavity 23 and is sealed and isolated from the first filter element 3. Specifically, the inner shell 2 includes an inner shell end cap 22 and an inner shell body 21. The inner shell body 21 has a partition 211 and an annular portion 212. The inner shell end cap 22 covers the annular portion 212 and together with the inner shell body 21, defines the second cavity 23.

[0140] like Figure 11 , Figure 13 The composite filter element assembly 1000 also includes a second cover 72 and a third cover 73 disposed within the first cavity 13. The second cover 72 covers the end of the first filter element 3 facing the L1 direction, and the third cover 73 covers the end of the first filter element 3 facing the L2 direction, and axially abuts against the partition plate 211, thereby enabling the installation of the first filter element 3 within the first cavity 13. In other embodiments, the third cover 73 can be disposed on the inner shell body 21 and formed integrally with the inner shell body 21, as shown in Embodiment 2.

[0141] like Figure 10 The outer shell 1 is provided with a gripping part 111 protruding outward in the direction of L2, so as to facilitate the holding and transport of the composite filter element assembly 1000. The gripping part 111 is provided on the outer shell body 11, which simplifies the structure of the outer shell end cap 12 and facilitates processing and manufacturing.

[0142] The main difference between this embodiment and embodiment 2 lies in the different configurations of the outer shell 1, inner shell 2, and cover 73. Other configurations can be found in embodiment 2 and other embodiments.

[0143] Example 4

[0144] This embodiment provides a composite filter element assembly for use in a water purifier. Other structures of the water purifier can refer to Embodiment 1 and other embodiments or existing water purifiers. Figures 16-20 This is a schematic diagram of this embodiment.

[0145] like Figures 16-18 The composite filter element assembly 1000 has an axial direction in the L direction and includes an outer shell 1, an inner shell 2, two filter elements, an outer tube 5, and an inner tube 6.

[0146] A first cavity 13 is defined in the shell 1, and a plurality of connecting ports are provided at one end of the shell 1 facing the L1 direction;

[0147] An inner shell 2 is arranged in the first cavity 13, and a second cavity 23 is defined in the inner shell 2;

[0148] Two filter cartridges, namely a first filter cartridge 3 and a third filter cartridge 4, are arranged in sequence along the L2 direction; the first filter cartridge 3 is arranged in the first cavity 13, and a first inlet 31 and a first outlet 32 of the first filter cartridge 3 are connected to different connecting ports; the first filter cartridge 3 is provided with a first channel 33 penetrating along the L direction; the filter part of the third filter cartridge 4 is composed of granular filter material, which is referred to as granular or granular material; the filter part formed by the granular material has no specific shape, and gaps are formed between the granular materials for fluid flow; the granular material is filled in the second cavity 23 to constrain the general shape of the filter part, Figure 17 、 Figure 18 The general area of the filter part of the third filter cartridge 4 is schematically shown by the dotted filling area; the granular material can be, but is not limited to, granular activated carbon.

[0149] An outer tube 5 is sealingly arranged in the first channel 33, and an inner tube 6 is sealingly arranged in the outer tube 5; an inner surface of the inner tube 6 defines an outflow channel 61, and an inner surface of the outer tube 5 and an outer surface of the inner tube 6 define an inflow channel 51; one end of the third filter cartridge 4 facing the L1 direction is connected to one connecting port through the inflow channel 51, and the other end of the third filter cartridge 4 facing the L2 direction is connected to another connecting port through the outflow channel 61; Figure 17 The flow path of the fluid entering and exiting the first filter cartridge 3 and the third filter cartridge 4 is schematically shown by the dotted line with arrows.

[0150] By arranging the first filter cartridge 3 and the third filter cartridge 4 in one shell 1, the number of shells 1 can be reduced, the structure is compact, and the manufacturing cost can be reduced. The outer tube 5 passes through the first filter cartridge 3, and the inner tube 6 is arranged in the outer tube 5 to respectively connect the inlet and outlet of the third filter cartridge 4 to the corresponding connecting ports, so that the structure is simple. The inner tube 6 and the outer tube 5 are respectively connected to the two ends of the third filter cartridge 4 along the axial direction, so that the fluid flows through a long path in the third filter cartridge 4 and is fully filtered.

[0151] As Figure 19 、 Figure 20The inner tube 6 extends into the second cavity 23 and is sealed at the opening of the inner shell 2 by a sealing ring, so that the outflow channel 61 is connected to the end of the third filter element facing L2. By setting the inner tube 6 to extend into the second cavity 23 and connect to the end of the filter element 4 away from the connection port, the space occupied by the filter part in the second cavity 23 can be reduced, so that the filter part can be set larger to improve the filtration effect. Specifically, the inner shell end cap 22 of the inner shell 2 is located at the end of the inner shell 2 facing L2. The inner shell end cap 22 is provided with a positioning protrusion 221 facing L1. The inner tube 6 abuts against the positioning protrusion 221 axially. The outer periphery of the positioning protrusion 221 is provided with an opening so that the outflow channel 61 in the inner tube 6 is connected to the end of the filter element 4 facing L2.

[0152] like Figure 19 , Figure 20 The inner shell 2 has a connecting opening 216 at one end facing L1 to connect the end of the filter element 4 facing L1 and the inflow channel 51. Specifically, the inner shell 2 has two interlocking and connected rings, ring 3 214 and ring 4 215, at one end facing the connection port along the axial direction. The connecting opening 216 is formed between the two rings, and the connecting opening 216 connects the end of the filter element 4 facing L1 and the inflow channel 51.

[0153] like Figure 11 , Figure 13 The composite filter element assembly 1000 also includes a second cover 72 and a third cover 73 disposed within the first cavity 13. The second cover 72 covers the end of the first filter element 3 facing the L1 direction, and the third cover 73 covers the end of the first filter element 3 facing the L2 direction, and axially abuts against the partition plate 211, thereby enabling the installation of the first filter element 3 within the first cavity 13. In other embodiments, the third cover 73 can be disposed on the inner shell body 21 and formed integrally with the inner shell body 21, as shown in Embodiment 2.

[0154] The main difference between this embodiment and embodiment 3 lies in the arrangement of the outer shell 1, filter element 3 4, and inner shell 2. Other structures can be referred to in embodiment 3 or other embodiments.

[0155] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A composite filter cartridge assembly characterized by, It comprises: a housing, internally defining a first cavity, provided with a plurality of connecting ports at one end along the axial direction of the composite filter element assembly; an inner housing, disposed in the first cavity, comprising an integrally formed inner housing body, the inner housing body having a partition extending in the radial direction; two filter elements, disposed axially on both sides of the partition and sealed from each other, respectively being filter element one and filter element three, disposed in sequence in the direction away from the connecting ports; an outer tube, sealingly penetrating the first passage; an inner tube, sealingly penetrating the outer tube, between the inner surface of the outer tube and the outer surface of the inner tube, the inner surface of the inner tube, one defines an inflow passage, the other defines an outflow passage, the inlet of the filter element three communicates with different connecting ports through the inflow passage, and the outlet of the filter element three communicates with different connecting ports through the outflow passage.

2. The composite filter cartridge assembly of claim 1 wherein, The inner housing further comprises an inner housing end cover, the inner housing body has a ring part one, the ring part one extends axially from the outer side of the partition, the inner housing end cover covers the end of the ring part one away from the partition, and the partition and the ring part one together define a second cavity, one of the filter elements is disposed in the second cavity and sealed from the other filter element.

3. The composite filter cartridge assembly of claim 2 wherein, The composite filter element assembly further comprises a cover one, which is disposed axially between the filter element three and the partition, the cover one and the filter element three are located in the second cavity, the filter element three has a third passage extending axially therein, the inlet of the filter element three is provided on the outer peripheral side of the filter element three, and the outlet is provided on the wall surface of the third passage; A flow channel is formed between the partition and the surface of the cover one to communicate the inflow passage and the inlet of the filter element three; The outflow passage is defined in the inner tube, the middle part of the partition is provided with an opening for inserting the inner tube, and the cover one is provided with an opening to communicate the outlet of the filter element three and the outflow passage.

4. The composite filter cartridge assembly of claim 2 wherein, The filter element three is disposed in the second cavity, the filter element three comprises a filter part composed of granular filter material, one of the inner tube and the outer tube extends into the second cavity and extends to the end of the filter part away from the connecting port in the axial direction and communicates with the filter part, and the other end of the filter part communicates with the connecting port in the axial direction.

5. The composite filter cartridge assembly of claim 1 wherein, The inner housing body has a ring part two and / or a ring part three, the ring part two and the ring part three extend axially from the outer side and the middle part of the partition respectively, and the filter element directly mounted on the inner housing body is disposed in the ring part two and / or sleeved on the outside of the ring part three, and is directly mounted on the partition.

6. The composite filter cartridge assembly of claim 5 wherein, The partition has a mounting part on the inside of the ring part three, the filter element one is directly mounted on the partition, and the end of the outer tube away from the connecting port abuts on the mounting part and is sealed with the ring part three by a sealing element.

7. The composite filter cartridge assembly of claim 1 wherein, The filter element one is directly mounted on the inner housing body; The composite filter element assembly further comprises a second cover arranged in the first cavity and mounted on the shell, the second cover covers one end of the first filter element axially towards the connecting port, the second cover is provided with an opening for the outer tube to pass through, the inlet of the first filter element is arranged on the outer circumferential side of the first filter element, and the outlet is arranged on the wall surface of the first channel; The surface of the second cover and the inner surface of the shell define a flow channel to connect the inlet and outlet of the first filter element and the corresponding connecting port; The outlet of the first filter element and the corresponding connecting port are connected through the first channel.

8. The composite filter cartridge assembly of claim 1 wherein, The shell comprises a shell body and a shell end cover, the shell end cover covers one end of the shell body axially, and the shell end cover and the shell body jointly form the first cavity, and the connecting port is arranged on the shell end cover.

9. The composite filter cartridge assembly of claim 1 wherein, One end of the shell axially provided with the connecting port is formed with four recesses which are sequentially sleeved and mutually sealed and isolated, and the four recesses are respectively connected with the inlet or outlet of one filter element and the corresponding connecting port.

10. The composite filter cartridge assembly of claim 9 wherein, The connecting port is arranged on the circumferential surface of the shell, and the shell is provided with a radial channel to connect the recess and the corresponding connecting port.

11. The composite filter cartridge assembly of claim 1 wherein, The outer side of the inner tube is provided with a protrusion to abut against the inner surface of the outer tube.

12. A composite filter cartridge assembly characterized by, It comprises: The shell comprises a shell body and a shell end cover, the shell end cover covers one end of the shell body axially, and the shell end cover and the shell body jointly form the first cavity, and the connecting port is arranged on the shell end cover. Two filter elements, a first filter element and a third filter element, are sequentially arranged in the first cavity in the direction away from the shell end cover axially, and are mutually sealed and isolated, the first filter element is internally provided with a first channel penetrating axially, and the inlet and outlet of the first filter element are connected with different connecting ports; The outer tube is sealingly arranged in the first channel; The inner tube is sealingly arranged in the outer tube, the inner surface of the outer tube and the outer surface of the inner tube define an inflow channel, the inside of the inner tube defines an outflow channel, the inlet of the third filter element is connected with different connecting ports through the inflow channel, and the outlet of the third filter element is connected with different connecting ports through the outflow channel.

13. A composite filter cartridge assembly characterized by, It comprises: The shell comprises a shell body and a shell end cover, the shell end cover covers one end of the shell body axially, and the shell end cover and the shell body jointly form the first cavity, and the connecting port is arranged on the shell end cover. The inner tube is sealingly arranged in the outer tube; The inner tube and the outer tube are respectively connected with the filter part at both ends of the filter part axially, and correspondingly connected with different connecting ports. ​ ​ ​ 14. The composite filter cartridge assembly of claim 13 wherein, The inner tube extends into the second cavity sealingly and communicates with the filter part at an end axially away from the connecting port, and the inner shell is provided with an opening at an end axially toward the connecting port to communicate the end of the filter part axially toward the connecting port and the outer tube.

15. The composite filter cartridge assembly of claim 14 wherein, The inner shell is provided with a protrusion on a wall surface axially toward the connecting port at an end axially away from the connecting port, and the inner tube abuts against the protrusion of the inner shell axially, and the outer periphery of the protrusion is provided with an opening to communicate the end of the filter part axially away from the connecting port and the inner tube. And / or, the inner shell has two ring parts axially toward the connecting port at an end axially toward the connecting port, the two ring parts are sleeved and connected with each other, and a communication opening is formed between the two ring parts to communicate the end of the filter part axially toward the connecting port and the outer tube.

16. A water purifier characterized by comprising: The water purifier further comprises a filter core two arranged outside the shell; 17. The water purifier of claim 16, wherein The two filter cores are connected in series through the filter core two; or the two filter cores are connected in parallel to form a parallel body, and the parallel body is connected in series with the filter core two. The inner tube extends into the second cavity sealingly and communicates with the filter part at an end axially away from the connecting port, and the inner shell is provided with an opening at an end axially toward the connecting port to communicate the end of the filter part axially toward the connecting port and the outer tube. The inner shell is provided with a protrusion on a wall surface axially toward the connecting port at an end axially away from the connecting port, and the inner tube abuts against the protrusion of the inner shell axially, and the outer periphery of the protrusion is provided with an opening to communicate the end of the filter part axially away from the connecting port and the inner tube. And / or, the inner shell has two ring parts axially toward the connecting port at an end axially toward the connecting port, the two ring parts are sleeved and connected with each other, and a communication opening is formed between the two ring parts to communicate the end of the filter part axially toward the connecting port and the outer tube. The water purifier further comprises a filter core two arranged outside the shell; The two filter cores are connected in series through the filter core two; or the two filter cores are connected in parallel to form a parallel body, and the parallel body is connected in series with the filter core two.

Images