Filtering module, filtering assembly, pre-filter and water consumption system

Abstract

The utility model discloses a filtration module, filtration subassembly, prefilter and water consuming system relates to water consuming system technical field, wherein filtration module includes support skeleton and filter piece, the support skeleton is formed with the water passing cavity, the support skeleton is also formed with the first water passing port and the second water passing port that communicate with the water passing cavity, the filter piece passes through the first water passing port and the second water passing port, the filter piece passes through the first water passing port and the second water passing port. In a filtering flow path of the pre-filter, the second water passing port, the water passing cavity and the first water passing port are sequentially distributed along upstream and downstream; the filtering piece is arranged on the supporting framework and corresponds to the second water passing opening, and at least part of the filtering piece is obliquely arranged. According to the technical scheme provided by the utility model, the filtering area of the filtering module can be increased.

Description

Technical Field

[0001] The utility model relates to the technical field of water use systems, in particular to a filter module, a filter assembly, a pre-filter and a water use system. Background Art

[0002] At present, the pre-filter is the first coarse filtration equipment for water use in the whole house. It can filter out mud, rust, large particles, etc. in tap water, thereby preventing a large amount of precipitated impurities generated in urban and community water supply networks from causing harm to the human body. It also plays an active pre-protective role in concealed pipes, faucets, water heating, water heaters, boilers, central air conditioners, washing machines, dishwashers, coffee machines and other water appliances (water purifiers, pure water machines, water dispensers).

[0003] However, the filter module of the existing pre-filter is a straight-cylinder filter structure with a small filter area, which results in low filtration efficiency of the filter module. Utility Model Content

[0004] The main purpose of the utility model is to provide a filter module, a filter assembly, a pre-filter and a water use system, aiming to increase the filter area of ​​the filter module.

[0005] To achieve the above objectives, the filter module proposed in the present invention is applied to a pre-filter, and the filter module includes:

[0006] a supporting frame, wherein a water passage cavity is formed in the supporting frame, and a first water passage port and a second water passage port are formed on the supporting frame to communicate with the water passage cavity, wherein the second water passage port, the water passage cavity, and the first water passage port are sequentially distributed along upstream and downstream in a filtering flow path of the pre-filter; and

[0007] The filter element is arranged on the supporting frame and is corresponding to the second water outlet. The filter element is at least partially inclined.

[0008] In one embodiment, the filter module includes two supporting frames, the water passage cavity is formed between the two supporting frames, and the first water passage and the second water passage are formed on at least one of the supporting frames.

[0009] In one embodiment, the support frame includes an oblique support portion, and the second water outlet is provided on the oblique support portion.

[0010] In one embodiment, the oblique support portion is formed with a plurality of second water outlets distributed at intervals, and the filter module is provided with a filter element corresponding to each support frame, and the filter element is in a conical shape.

[0011] In one embodiment, the support skeleton further includes a first ring portion and a second ring portion, the oblique support portion includes a plurality of support ribs spaced circumferentially along the first ring portion, the two ends of the support ribs are respectively connected to the first ring portion and the second ring portion, a second water outlet is formed between every two adjacent support ribs, and the first water outlet is arranged on the inner circumference of the first ring portion.

[0012] In one embodiment, the inner diameter of the second ring portion ranges from 36 mm to 52 mm; and / or

[0013] The inner diameter of the first ring portion ranges from 17 mm to 26 mm.

[0014] In one embodiment, the outer diameter of the second ring portion ranges from 38 mm to 60 mm; and / or

[0015] The outer diameter of the first ring portion ranges from 20 mm to 32 mm.

[0016] In one embodiment, the axial height of the second ring portion ranges from 1 mm to 5 mm; and / or

[0017] The axial height of the first ring portion ranges from 5 mm to 10 mm.

[0018] In one embodiment, the two support frames are connected via two second ring portions.

[0019] In one embodiment, the support ribs include multiple main support ribs and multiple secondary support ribs, the main support ribs on one support frame abut against the main support ribs on another support frame, and the secondary support ribs on one support frame are spaced apart from the secondary support ribs on another support frame.

[0020] In one embodiment, the plurality of main support ribs and the plurality of secondary support ribs are arranged alternately along the circumferential direction.

[0021] In one embodiment, the width of the support ribs ranges from 2 mm to 7.6 mm.

[0022] In one embodiment, the axial height of the filter module ranges from 12 mm to 19 mm.

[0023] In one embodiment, the axial depth of the water passage cavity ranges from 3 mm to 6 mm.

[0024] The present invention further provides a filter assembly, comprising a plurality of the above-mentioned filter modules, wherein two adjacent filter modules are connected via the first water outlet.

[0025] The present invention also provides a pre-filter, which includes the above-mentioned filter assembly.

[0026] The utility model also provides a water use system, comprising the above-mentioned pre-filter.

[0027] The technical solution of the present invention increases the filtration area of ​​the filter element by tilting at least part of the filter element. Under the condition of the same axial height, the filtration area of ​​the filter element can be increased. Due to the increase in the filtration area of ​​the filter element, it can withstand a larger flow load and improve the filtration efficiency. Moreover, since the filtration area of ​​the filter element is large enough, even if a local area of ​​the filter element is clogged, the remaining area of ​​the filter element can continue to withstand a larger flow load, which helps to extend the service life of the filter module, reduce the replacement frequency, and thus reduce maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0029] Figure 1 A schematic structural diagram of a first perspective of an embodiment of a filter module provided by the present invention;

[0030] Figure 2 A schematic structural diagram of a second perspective of an embodiment of a filtering module provided by the present invention;

[0031] Figure 3 This is a schematic diagram of the explosion structure of an embodiment of the filter module provided by the present utility model;

[0032] Figure 4 This is a schematic diagram of the exploded structure of the support frame of the filter module provided by the utility model;

[0033] Figure 5 This is a schematic cross-sectional view of the first embodiment of the filter module provided by the present invention;

[0034] Figure 6 This is a schematic structural diagram of the support frame of the filter module provided by the utility model from a first perspective;

[0035] Figure 7 A schematic structural diagram of the support frame of the filter module provided by the present invention from a second perspective;

[0036] Figure 8 This is a schematic cross-sectional view of the first embodiment of the support frame of the filter module provided by the present invention.

[0037] Description of Figure Numbers:

[0038] 300, filter module; 310, support frame; 311, oblique support portion; 311a, main support rib; 311b, secondary support rib; 312, first ring portion; 313, second ring portion; 320, filter element; 330, first water outlet; 340, water chamber; 350, second water outlet.

[0039] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0041] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0042] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0043] Water systems, such as whole-house water purification systems, typically feature a pre-filter to filter out large particles from tap water. This not only ensures water safety but also extends the life of appliances, prevents clogged household water pipes, and improves residents' health. The pre-filter is the first coarse filtration device in a whole-house water purification system. It is a physical filter that primarily intercepts large particles larger than 40 microns, ensuring back-end water safety.

[0044] Some pre-filters on the market usually have a flushing function, that is, they can be cleaned regularly to discharge the large particles that were previously intercepted, thereby increasing the service life of the pre-filter.

[0045] The prefilter includes a filter bottle and a valve head connected to the filter bottle. The filter bottle has a water filter cavity. The valve head has a water inlet and a water outlet connected to the water filter cavity. The water inlet is connected to the water supply end, and the water outlet is connected to the water use end.

[0046] It should be noted that the water supply end can be a tap, a water tower or well water, and the water use end can be a faucet, a shower or a drinking water outlet. This application does not make specific restrictions on this.

[0047] Furthermore, the pre-filter also includes a filter module 300 located within the water filter chamber. This filter module 300 is located within the water filter chamber. Raw water (e.g., tap water or well water) flows from an external water source into the water inlet. As it flows through the water filter chamber, it is filtered out by the filter module 300, removing large particles. The filtered water then flows out of the pre-filter through the water outlet and toward the water consumption end. This process achieves a coarse filtration of the raw water.

[0048] However, the filter module 300 of the existing pre-filter is a straight-cylinder filter structure with a small filter area, which results in a low filtration efficiency of the filter module 300 .

[0049] Reference Figures 1 to 3 Therefore, in order to solve the above-mentioned problems, the present invention proposes a filter module 300. In one embodiment of the present invention, the filter module 300 is applied to a pre-filter. The filter module 300 includes a support frame 310 and a filter element 320. A water passage cavity 340 is formed inside the support frame 310. The support frame 310 also forms a first water passage 330 and a second water passage 350 communicating with the water passage cavity 340. In the filter flow path of the pre-filter, the second water passage 350, the water passage cavity 340, and the first water passage 330 are sequentially distributed along the upstream and downstream. The filter element 320 is provided on the support frame 310 and is arranged corresponding to the second water passage 350. The filter element 320 is at least partially inclined.

[0050] The technical solution of the present invention increases the filtering area of ​​the filter element 320 by setting the filter element 320 at least partially in an inclined manner, compared with the solution in which the filter element 320 is planar. Under the condition of the same axial height, the filtering area of ​​the filter element 320 can be increased. Due to the increase in the filtering area of ​​the filter element 320, it can withstand a larger flow load and improve the filtering efficiency. Moreover, since the filtering area of ​​the filter element 320 is large enough, even if a local area of ​​the filter element 320 is clogged, the remaining area of ​​the filter element 320 can continue to withstand a larger flow load, which helps to extend the service life of the filter module, reduce the replacement frequency, and thus reduce maintenance costs.

[0051] It should be noted that the filtering flow path of the filtering module 300 is as follows Figure 5 As shown by the solid arrows in the figure, in the filtering flow path of the pre-filter, the second water outlet 350, the water passage cavity 340 and the first water outlet 330 are distributed in sequence along the upstream and downstream. That is, when the pre-filter filters the water flow, the water flow in the filtering cavity of the filter bottle passes through the second water outlet 350, the water passage cavity 340 and the first water outlet 330 in sequence, and then flows into the water use end from the first water outlet 330.

[0052] The flushing flow of the filter module 300 includes a forward flushing flow path and a back flushing flow path. Figure 5 As shown by the dotted arrow, when the pre-filter is in the backwash state, the water flow from the water end flows into the first water outlet 330, the water chamber 340 and the second water outlet 350 in sequence, and then backwashes and discharges the large particles intercepted on the filter element 320, thereby increasing the service life of the pre-filter.

[0053] Furthermore, the filter element 320 is arranged in an annular shape, and the outer ring edge of the filter element 320 is located on the axial side of the inner ring edge of the filter element 320, that is, the inner ring edge and the outer ring edge are not at the same height in the axial direction. Under the axial condition of the same height, the filtering area of ​​the filter element 320 can be increased, which means that under the same flow rate, the filter element 320 of this solution can withstand a larger flow load and improve the filtering efficiency. Moreover, since the filtering area of ​​the filter element 320 of this solution is large enough, even if a local area of ​​the filter element 320 is clogged, the remaining area of ​​the filter element 320 can continue to withstand a larger flow load, which helps to extend the service life of the filter module 300, reduce the replacement frequency, and thus reduce maintenance costs.

[0054] Specifically, the filter element 320 is arranged in an annular shape, and the outer ring edge is located on the axial side of the inner ring edge; this can increase the distance between the filter element and the surrounding environment or another filter module 300, thereby reducing the chance of clogging of the filter module 300, and during backwashing, it is also beneficial to flush impurities from the filter element 320.

[0055] In one embodiment, the filter element 320 is in a conical shape, which makes it easier for impurities to slide off the surface of the filter element, thereby reducing the probability of impurities clogging the filter element 320.

[0056] Furthermore, the outer surface of the filter element 320 is configured as a conical surface. This conical surface design facilitates uniform distribution and smooth flow of the fluid, reduces eddy currents and turbulence within the filter module 300, and reduces energy loss. Specifically, the generatrix of the conical surface is a straight line. The generatrix of the conical surface can also be a concave arc that is concave toward the inside of the water chamber 340, or a convex arc that is convex toward the outside of the water chamber 340.

[0057] In the second embodiment, the outer side surface of the filter element 320 is a pyramidal surface; the cross section of the pyramidal surface is a polygon, thereby increasing the filtering area of ​​the filter element 320.

[0058] Furthermore, a first water outlet 330 is provided on at least one of the inner ring edge and the outer ring edge of the filter element 320 . Such a first water outlet 330 is simple in shape and easy to manufacture.

[0059] In this embodiment, the first water outlet 330 is provided on both the inner ring edge and the outer ring edge. Of course, the present invention is not limited to this. In other embodiments, the first water outlet 330 can also be provided on only one ring edge, depending on the actual application environment.

[0060] It should be noted that in this application, the axial direction refers to the axial direction of the inner ring edge of the filter element 320, that is, the height direction of the conical surface of the filter element 320, and the axial direction is equivalent to the vertical direction from the apex of the conical surface to the bottom surface.

[0061] It should be noted that the multiple indicated in this solution can be understood as greater than or equal to two.

[0062] In this embodiment, the filter module 300 includes two support frames 310, a water passage cavity 340 is formed between the two support frames 310, and a first water passage 330 and a second water passage 350 are formed on at least one of the support frames 310. It is understood that the filter module 300 is configured as two support frames 310 that overlap each other to form the water passage cavity 340 between the two support frames 310. The connection of the two support frames 310 can enclose the filter module 300, thereby reducing the production efficiency of the filter module 300. Of course, the present invention is not limited to this. In a second embodiment, the filter module 300 may also include an inner ring, an outer ring, and two conical panels connecting opposite ends of the inner ring and the outer ring, respectively, with the water passage cavity 340 formed between the two conical panels and the inner and outer rings.

[0063] The two support frames 310 are distributed and connected along the axial direction.

[0064] In the third embodiment, the filter module 300 may also include a support frame 310 and a bottom plate, wherein the bottom plate covers a side of the support frame 310 opposite to the filter element 320 .

[0065] Furthermore, the support frame 310 further includes an oblique support portion 311 , and the second water outlet 350 is provided on the oblique support portion 311 . It can be understood that the oblique support portion 311 can support the filter element 320 , thereby making the installation of the filter element 320 more stable.

[0066] Reference Figure 8 Optionally, the support skeleton 310 also includes a first ring portion 312 and a second ring portion 313, and the filter module 300 includes two support skeletons 310, each support skeleton 310 includes an oblique support portion 311, that is, in the same filter module 30, two oblique support portions 311 are provided, and the two oblique support portions 311 are distributed along the axial direction, and the two sides of the axial direction of the two oblique support portions 311 are respectively connected by the first ring portion 312 and / or the second ring portion 313, and the water passage chamber 340 is formed between the two oblique support portions 311.

[0067] In this embodiment, the two support frames 310 are connected by two second ring portions 313 . Since the second ring portions are arranged on the outside of the support frames 310 , the influence of the connection structure on the volume of the water passage cavity 340 can be reduced.

[0068] Reference Figure 8 In one embodiment, the axial height range of the second ring portion 313 is 1 mm to 5 mm; and / or the axial height range of the first ring portion 312 is 5 mm to 10 mm; this can ensure the depth of the water passage cavity 340 in the support frame 310, thereby ensuring the volume of the water passage cavity 340.

[0069] Specifically, the axial height of the second ring portion 313 affects the axial depth of the water passage cavity 340. When the axial height of the second ring portion 313 is less than 1 mm, the axial depth of the water passage cavity 340 is too small, which is not conducive to the circulation of water, thus reducing the circulation velocity of the water flow and further reducing the filtration efficiency. When the axial height of the second ring portion 313 is greater than 5 mm, although the excessive axial height of the second ring portion 313 increases the axial depth of the water passage cavity 340, it also increases the axial space occupied by the filter module 300.

[0070] The axial height of the first ring portion 312 also affects the axial depth of the water passage cavity 340. When the axial height of the first ring portion 312 is less than 5 mm, the axial depth of the water passage cavity 340 is too small, which is not conducive to water flow, thus reducing the water flow velocity and, in turn, the filtration efficiency. When the axial height of the first ring portion 312 is greater than 10 mm, the excessive axial height of the second ring portion 313 increases the axial depth of the water passage cavity 340, but also increases the axial space occupied by the filter module 300.

[0071] It should be noted that in the filter assembly, two adjacent filter modules 300 are connected by a first ring portion 312. The axial height of the first ring portion 312 will also affect the distance between the two adjacent inclined support portions 311. Limiting the axial height of the first ring portion 312 to between 5 mm and 10 mm is beneficial to reducing the probability of impurities being blocked between the two filter modules 300. Moreover, during backwashing, it is also beneficial to flush impurities from the filter element 320.

[0072] Among them, the axial height of the first ring portion 312 is recorded as H1, that is, the range of the axial height of the first ring portion 312 is: 5mm≤H1≤10mm, and the axial height of the second ring portion 313 is H2, that is, the range of the axial height of the second ring portion 313 is: 1mm≤H2≤5mm.

[0073] It should be noted that the axial height of the second ring portion 313 referred to here refers to the axial height of the second ring portion 313 of one of the two support frames 310 in the same filter module 300. Similarly, the axial height of the first ring portion 312 refers to the axial height of the first ring portion 312 of one of the two support frames 310 in the same filter module 300.

[0074] Reference Figure 6 and Figure 7 Optionally, the oblique support portion 311 is formed with a plurality of second water outlets 350 spaced apart along the circumferential direction. The filter module 300 is provided with a filter element 320 corresponding to each support frame 310. The filter element 320 is conical. It can be understood that providing a plurality of second water outlets 350 can increase the water flow rate of the filter module 300, thereby improving the filtration efficiency. Moreover, the conical filter element 320 can be directly covered on the oblique support portion 311, which can increase the installation stability of the filter element 320. Compared with the solution of providing a filter element 320 for each second water outlet 350, this can reduce the installation process. Of course, the present application is not limited to this. In other embodiments, the filter module 300 can also be provided with a filter element corresponding to each second water outlet 350.

[0075] In this embodiment, the filter element 320 is disposed to at least cover the oblique support portion 311 .

[0076] Among them, the filter module 300 includes two support frames 310 distributed along the axial direction, and each support frame 310 is provided with an inclined support portion 311. The filter module 300 is provided with a filter element 320 corresponding to each support frame 310, and the annular filter element 320 is directly covered on the inclined support portion 311, which facilitates the installation of the filter element 320 and the support frame 310.

[0077] During installation, the filter element 320 can be first covered on the inclined support portion 311 so that the filter element 320 and the support frame 310 form a whole, and then the two support frames 310 are connected to form a filter module 300. Of course, the two support frames 310 can also be connected to form an overall support frame 310 first, and then the filter element 320 can be installed on the inclined support portion 311 of the support frame 310.

[0078] Optionally, the oblique support portion 311 includes a plurality of support ribs spaced circumferentially, with a second water outlet 350 formed between each pair of adjacent support ribs. The first water outlet 330 is disposed on the inner circumference of the first ring portion 312. This type of support frame 310 is simple to form, and the support ribs can increase the strength of the oblique support portion 311, reducing the likelihood of the oblique support portion 311 breaking when excessive water flow occurs. Of course, the present invention is not limited to this. In other embodiments, the oblique support portion 311 can also be configured as a conical plate, with the plurality of second water outlets 350 formed on the conical plate.

[0079] The two ends of the support rib are respectively connected to the first ring portion 312 and the second ring portion 313 , and a first water outlet 330 is provided on the inner periphery of the first ring portion 312 of the support frame 310 .

[0080] Reference Figure 7 The width of the support ribs ranges from 2 mm to 7.6 mm. This increases the strength of the support ribs and reduces the chance of them breaking when subjected to strong water flow. Specifically, if the width of the support ribs is less than 2 mm, their strength will be reduced. If the width of the support ribs is greater than 7.6 mm, they will excessively occupy the area of ​​the oblique support portion 311, thereby reducing the area of ​​the second water outlet 350 and reducing filtration efficiency.

[0081] The width of the support rib is recorded as W, that is, the width range of the support rib is: 2mm≤W≤7.6mm.

[0082] Reference Figure 4 and Figure 6Optionally, the support ribs include a plurality of main support ribs 311a and a plurality of secondary support ribs 311b. The main support ribs 311a on one support frame 310 abut against the main support ribs 311a on the other support frame 310, and the secondary support ribs 311b on one support frame 310 are spaced apart from the secondary support ribs 311b on the other support frame 310. It can be understood that the main support ribs 311a on one support frame 310 abut against the main support ribs 311a on the other support frame 310, thereby increasing the support strength between the two support frames 310, and the secondary support ribs 311b on one support frame 310 are spaced apart from the secondary support ribs 311b on the other support frame 310, thereby increasing the gap between the two support frames 310, thereby increasing the flow area of ​​the water chamber 340 and further improving the filtration efficiency. Of course, the present invention is not limited to this. In other embodiments, all the support ribs on one support frame 310 can also be spaced apart from all the support ribs on the other support frame 310.

[0083] The plurality of main support ribs 311a and the plurality of secondary support ribs 311b are arranged alternately along the circumferential direction, thereby further enhancing the support strength between the two support frames 310. Of course, the present invention is not limited thereto. In other embodiments, the plurality of main support ribs 311a and the plurality of secondary support ribs 311b may be arranged in other arrangements, such as, but not limited to, the plurality of main support ribs 311a and the plurality of secondary support ribs 311b being arranged alternately along the circumferential direction in varying numbers. Specifically, two main support frames may be arranged first, followed by one secondary support frame, or two secondary support frames may be arranged first, followed by one main support frame.

[0084] Reference Figure 5 In this embodiment, the axial height of the filter module 300 ranges from 12 mm to 19 mm. This ensures sufficient water flow through the filter module 300 while shortening the water flow path within the filter module 300, thereby improving the filtration efficiency of the filter module 300. Specifically, when the axial height of the filter module 300 is less than 12 mm, the flow area of ​​the filter module 300 is small, which is not conducive to increasing the flow rate of the water. When the axial height of the filter module 300 is greater than 19 mm, it will occupy excessive axial space within the filter bottle.

[0085] The axial depth of the water passage cavity 340 ranges from 3 mm to 6 mm; this ensures a sufficient amount of water flowing through the filter module 300 while shortening the water flow path within the filter module 300, thereby improving the filtration efficiency of the filter module 300. Specifically, if the axial depth of the water passage cavity 340 is less than 3 mm, the flow volume of the water passage cavity 340 is too small, thereby hindering water flow.

[0086] The axial height of the filter module 300 is recorded as H3, that is, the axial height range of the filter module 300 is: 12mm≤H3≤19mm, and the axial depth of the water chamber 340 is recorded as h, that is, the axial depth range of the water chamber 340 is 3mm≤h≤6mm.

[0087] Reference Figure 8 Furthermore, the two support frames 310 are connected by two second ring portions 313. The outer diameter of the second ring portion 313 is larger than the outer diameter of the first ring portion 312. This facilitates the installation of the support frame 310 and prevents the connection structure from affecting the flow of water in the water chamber 340. In addition, the second ring portion 313 is located at the periphery of the filter module 300. Using the two second ring portions 313 to connect the two oblique support portions 311 can improve the choice of connection methods, such as bonding or welding. When the two oblique support portions 311 are connected through the first ring portion 312, if bonding or welding is used, a connecting port needs to be opened on the second ring portion 313. This not only affects the area of ​​the connection surface and the stability of the connection, but also increases the processing process, thereby reducing production efficiency. Of course, the present invention is not limited to this. In other embodiments, the two oblique support portions 311 can also be connected through the first ring portion 312.

[0088] Optionally, the inner diameter of the first ring portion 312 ranges from 17 mm to 26 mm; and / or, the inner diameter of the second ring portion 313 ranges from 36 mm to 52 mm, which can ensure the flow area of ​​the filter module 300 and thus improve the filtration efficiency of the filter module 300.

[0089] Specifically, if the inner diameter of the first ring portion 312 is less than 17 mm, since the first water outlet 330 is located on the inner circumference of the first ring portion 312, this too small inner diameter will affect the diameter of the first water outlet 330, thereby affecting the water flow area of ​​the first water outlet 330. If the inner diameter of the first ring portion 312 is greater than 26 mm, while the inner diameter of the second ring portion 313 remains unchanged, the radial width of the inclined support portion 311 will decrease, thereby reducing the water flow area of ​​the second water outlet 350 and reducing filtration efficiency. If the inner diameter of the second ring portion 313 is less than 36 mm, while the inner diameter of the second ring portion 313 remains unchanged, the radial width of the inclined support portion 311 will decrease, thereby reducing the water flow area of ​​the second water outlet 350 and reducing filtration efficiency. If the inner diameter of the second ring portion 313 is greater than 52 mm, it will occupy excessive radial space in the filter bottle.

[0090] The inner diameter of the first ring portion 312 is recorded as D1, that is, the inner diameter range of the first ring portion 312 is: 17mm≤D1≤26mm; the inner diameter of the second ring portion 313 is recorded as D2, that is, the inner diameter range of the second ring portion 313 is: 36mm≤D2≤52mm.

[0091] Furthermore, the outer diameter of the first ring portion 312 ranges from 20 mm to 32 mm, and / or the outer diameter of the second ring portion 313 ranges from 38 mm to 60 mm. It is understood that limiting the inner diameter of the first ring portion 312 to between 17 mm and 26 mm, and / or limiting the inner diameter of the second ring portion 313 to between 36 mm and 52 mm, and limiting the outer diameter of the first ring portion 312 to between 20 mm and 32 mm, and / or limiting the outer diameter of the second ring portion 313 to between 38 mm and 60 mm, can ensure the thickness of the first and second ring portions 312, 313, thereby improving the strength of the first and second ring portions 312, 313.

[0092] The outer diameter of the first ring portion 312 is recorded as D3, that is, the range of the outer diameter of the first ring portion 312 is: 20mm≤D3≤32mm; the outer diameter of the second ring portion 313 is recorded as D4, that is, the range of the outer diameter of the second ring portion 313 is: 38mm≤D4≤60mm.

[0093] The present invention also proposes a filter assembly, which includes multiple filter modules. The specific structure of the filter module refers to the above-mentioned embodiment. Since this filter assembly adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0094] The present invention also proposes a pre-filter, which includes a filter assembly. The specific structure of the filter assembly refers to the above-mentioned embodiment. Since the pre-filter adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0095] The present invention also provides a water system including a prefilter. The specific structure of the prefilter is similar to that of the above-described embodiments. Since the present water system utilizes all of the technical solutions of all of the above-described embodiments, it at least possesses all of the beneficial effects of the technical solutions of the above-described embodiments, and therefore will not be further detailed here. The water system includes at least the relevant components from the prefilter to the water supply terminal. For example, the water system may include household appliances such as a water heater, a dishwasher, and a water dispenser, as well as accessories such as water pipes for household water supply.

[0096] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A filter module, applied to a pre-filter, characterized in that: include: A support frame, wherein a water passage cavity is formed in the support frame, and the support frame further forms a first water passage and a second water passage communicating with the water passage cavity, wherein the second water passage, the water passage cavity, and the first water passage are sequentially distributed along upstream and downstream in a filtering flow path of the pre-filter; as well as The filter element is arranged on the supporting frame and is corresponding to the second water outlet. The filter element is at least partially inclined.

2. The filter module according to claim 1, wherein The filter module includes two supporting frames, the water passage cavity is formed between the two supporting frames, and the first water passage and the second water passage are formed on at least one of the supporting frames.

3. The filter module according to claim 2, wherein: The support frame includes an oblique support portion, and the second water outlet is provided at the oblique support portion.

4. The filter module according to claim 3, wherein: The oblique support portion is formed with a plurality of second water outlets distributed at intervals. The filter module is provided with a filter element corresponding to each support frame, and the filter element is in a conical shape.

5. The filter module according to claim 4, characterized in that The support frame also includes a first ring portion and a second ring portion, and the oblique support portion includes a plurality of support ribs spaced apart along the circumference of the first ring portion, the two ends of the support ribs are respectively connected to the first ring portion and the second ring portion, and a second water outlet is formed between every two adjacent support ribs, and the first water outlet is arranged on the inner circumference of the first ring portion.

6. The filter module according to claim 5, characterized in that The inner diameter of the second ring portion ranges from 36 mm to 52 mm; and / or The inner diameter of the first ring portion ranges from 17 mm to 26 mm.

7. The filter module according to claim 6, characterized in that The outer diameter of the second ring portion ranges from 38 mm to 60 mm; and / or The outer diameter of the first ring portion ranges from 20 mm to 32 mm.

8. The filter module according to claim 5, wherein: The axial height of the second ring portion ranges from 1 mm to 5 mm; and / or The axial height of the first ring portion ranges from 5 mm to 10 mm.

9. The filter module according to claim 5, characterized in that The two support frames are connected via two second ring portions.

10. The filter module according to claim 5, wherein: The support ribs include multiple main support ribs and multiple secondary support ribs. The main support ribs on one support frame abut against the main support ribs on another support frame, and the secondary support ribs on one support frame are spaced apart from the secondary support ribs on another support frame.

11. The filter module according to claim 10, wherein: The plurality of main support ribs and the plurality of secondary support ribs are arranged alternately along the circumferential direction.

12. The filter module according to claim 5, wherein: The width of the support ribs ranges from 2 mm to 7.6 mm.

13. The filter module according to claim 1, wherein: The axial height of the filter module ranges from 12 mm to 19 mm.

14. The filter module according to claim 13, wherein: The axial depth of the water passage cavity ranges from 3 mm to 6 mm.

15. A filter assembly, characterized in that: The filter module comprises a plurality of filter modules according to any one of claims 1 to 14, and two adjacent filter modules are connected through the first water outlet.

16. A pre-filter, characterized in that: The pre-filter comprises the filter assembly according to claim 15 .

17. A water system, characterized in that: Comprising the pre-filter as claimed in claim 16.

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