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

Abstract

The invention discloses a filtering module, a filtering assembly, a pre-filter and a water consumption system, and relates to the technical field of water consumption systems.The filtering module is internally provided with a water passing cavity, and the filtering module is provided with a first water passing opening and a second water passing opening which are communicated with the water passing cavity; the filtering module comprises a filtering piece arranged at the second water passing opening, the filtering piece is annularly arranged and is provided with an inner ring edge and an outer ring edge, and the outer ring edge is located on the axial side of the inner ring edge. According to the technical scheme, the filtering area of the filtering module can be increased.

Description

Technical Field

[0001] The invention relates to the technical field of water use systems, and 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 the whole house water. It can filter out mud, rust, large particles in tap water, etc., thereby preventing a large amount of precipitated impurities generated in the urban and community water supply network from causing harm to the human body. It also plays an active pre-protection 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 screen structure with a small filter area, which results in a low filter efficiency of the filter module. Summary of the invention

[0004] The main purpose of the present invention 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-mentioned purpose, the filter module proposed in the present invention is applied to a pre-filter, and a water flow cavity is formed inside the filter module, and a first water flow port and a second water flow port connected to the water flow cavity are formed in the filter module, and the filter module includes a filter element arranged at the second water flow port, and the filter element is arranged in a ring shape and has an inner ring edge and an outer ring edge, and the outer ring edge is located on one axial side of the inner ring edge.

[0006] In one embodiment, the filter module further includes a support frame, the water passage cavity is formed inside the support frame, the first water passage is formed in the support frame, the support frame further includes an inclined support portion, and the second water passage is arranged in the inclined support portion.

[0007] In one embodiment, the support skeleton further includes a first ring portion and a second ring portion, and two oblique support portions are provided. The two oblique support portions are distributed along the axial direction, and the first ring portion or the second ring portion is respectively connected to both sides of the axial direction of the two oblique support portions, and the water passage cavity is formed between the two oblique support portions.

[0008] In one embodiment, the oblique support portion is formed with a plurality of the second water outlets spaced apart along the circumferential direction, and the filter element is disposed on the oblique support portion.

[0009] In one embodiment, two adjacent oblique support portions extend in opposite directions along the axial direction, so that the width of the second water outlet on a side close to the inner ring edge is smaller than the width of the second water outlet on a side close to the outer ring edge.

[0010] In one embodiment, the oblique support portion includes a plurality of support ribs spaced apart along the circumferential direction, 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.

[0011] In one embodiment, one filter element is provided corresponding to one of the inclined support portions, and the two filter elements are tapered in opposite directions.

[0012] In one embodiment, the two filter elements are tapered in opposite directions.

[0013] In one embodiment, the support frame is made of plastic.

[0014] In one embodiment, the filter element is made of metal.

[0015] In one embodiment, the filter element and the support frame are integrally injection molded.

[0016] In one embodiment, the support frame is made of plastic.

[0017] In one embodiment, the filter element is made of metal.

[0018] In one embodiment, the filter element and the support frame are integrally injection molded.

[0019] In one embodiment, the filter element is arranged in a ring-conical shape.

[0020] 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.

[0021] The present invention also provides a pre-filter, which comprises the above-mentioned filter assembly.

[0022] The present invention also provides a water use system, comprising the above-mentioned pre-filter.

[0023] The technical solution of the present invention is to arrange the filter element in an annular shape, and the outer ring edge of the filter element is located on the axial side of the inner ring edge. Under the condition of the same axial height, the filtering area of ​​the filter element can be increased. Due to the increase in the filtering area of ​​the filter element, it can withstand a larger flow load and improve the filtering efficiency. Moreover, since the filtering 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

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative work.

[0025] Figure 1 A schematic structural diagram of a first viewing angle of an embodiment of a filtering module provided by the present invention; Figure 2 A structural schematic diagram of a second viewing angle of an embodiment of a filtering module provided by the present invention; Figure 3 A schematic diagram of an exploded structure of an embodiment of a filter module provided by the present invention; Figure 4 This is a schematic cross-sectional structural diagram of an embodiment of a filter module provided by the present invention.

[0026] Description of Figure Numbers: 300, filter module; 310, support frame; 311, oblique support portion; 312, first ring portion; 313, second ring portion; 320, filter element; 330, first water outlet; 340, water passage cavity; 350, second water outlet.

[0027] 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

[0028] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0029] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0030] 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 used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. 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 contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0031] Water use systems, such as whole-house water purification systems, are usually equipped with pre-filters, which are used to filter large particles in tap water. This not only ensures the safety of residents' water use, but also extends the service life of home appliances, prevents blockage of household water pipes, and improves the health of residents. The pre-filter is the first coarse filtration device in the whole-house water purification system. It is a physical filtration device that is mainly used to intercept large particles larger than 40 microns to protect the safety of back-end water use.

[0032] 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.

[0033] The pre-filter comprises 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.

[0034] It should be noted that the water supply end can be a water pipe, a water tower or well water, and the water use end can be a faucet, a shower or a drinking water outlet, and this application does not make specific limitations on this.

[0035] Furthermore, the pre-filter also includes a filter module 300 disposed in the water filter cavity. The filter module 300 is disposed in the water filter cavity. After raw water (such as tap water or well water) flows into the water inlet from the external water source end, it can be filtered out of large particles in the water filter cavity by the filter module 300 when flowing through the water filter cavity. The filtered water then flows out of the pre-filter from the water outlet and flows to the water use end. In this way, through this process, the raw water can be roughly filtered.

[0036] However, the filter module 300 of the existing pre-filter is a straight-cylinder filter screen structure with a small filter area, so that the filter efficiency of the filter module 300 is low.

[0037] Reference Figure 1 and Figure 4 Therefore, in order to solve the above 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. A water passage cavity 340 is formed inside the filter module 300. The filter module 300 is formed with a first water passage 330 and a second water passage 350 communicating with the water passage cavity 340. The filter module includes a filter element 320 disposed at the second water passage 350. The filter element 320 is arranged in an annular shape and has an inner ring edge and an outer ring edge, and the outer ring edge is located on one axial side of the inner ring edge.

[0038] The technical solution of the present invention is to arrange the filter element 320 in a ring 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 and reduce the replacement frequency, thereby reducing maintenance costs.

[0039] Reference Figure 4 It should be noted that the filtering flow path of the filtering module 300 is as follows Figure 4 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 sequentially distributed 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.

[0040] The flushing flow path of the filter module 300 includes a forward flushing flow path and a back flushing flow path. Figure 4 As shown by the dotted arrow, when the pre-filter is in the backwash state, the water flow at the water end flows into the first water outlet 330, the water chamber 340 and the second water outlet 350 in sequence, and then the large particles intercepted by the filter element 320 are backwashed and discharged, thereby increasing the service life of the pre-filter.

[0041] 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 probability of clogging of the filter module 300, and during backwashing, it is also helpful to flush impurities from the filter element 320.

[0042] In one embodiment, the filter element 320 is in a cone 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.

[0043] Furthermore, the outer side surface of the filter element 320 is set in a conical surface. The design of the conical surface is conducive to the uniform distribution and smooth flow of the fluid, reduces the eddy current and turbulence of the fluid inside 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 line that is concave toward the inside of the water cavity 340, and the generatrix of the conical surface can also be a convex arc line that protrudes toward the outside of the water cavity 340.

[0044] 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, so that the filtering area of ​​the filter element 320 can be increased.

[0045] Furthermore, at least one of the inner ring edge and the outer ring edge of the filter element 320 is provided with a first water outlet 330 . Such a first water outlet 330 is simple in shape and convenient for manufacturing.

[0046] 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 according to the actual application environment.

[0047] It should be noted that in the present 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.

[0048] Reference Figure 2 and Figure 4Optionally, the filter module 300 also includes a support frame 310, a water flow chamber 340 is formed inside the support frame 310, a first water flow port 330 is formed on the support frame 310, the support frame 310 also includes an inclined support portion 311, a second water flow port 350 is arranged on the inclined support portion 311, and the filter element 320 is arranged on the support frame 310 and corresponds to the second water flow port 350; it can be understood that the support frame 310 can increase the supporting force of the filter module 300 on the filter element 320, and setting the second water flow port 350 on the support frame 310 can increase the water flow area of ​​the filter module 300, thereby improving the filtering efficiency of the filter module 300.

[0049] Specifically, the filter element 320 is disposed on the supporting frame 310 and covers the second water outlet 350 .

[0050] Optionally, the support skeleton 310 also includes a first ring portion 312 and a second ring portion 313, and two oblique support portions 311 are provided. The two oblique support portions 311 are distributed along the axial direction, and the first ring portion 312 or the second ring portion 313 is respectively connected to both sides of the axial direction of the two oblique support portions 311. The water passage chamber 340 is formed between the two oblique support portions 311. The setting of the two oblique support portions 311 can increase the area of ​​the water passage of the filter module 300, thereby improving the filtration efficiency.

[0051] Reference Figure 2 and Figure 3 Optionally, the oblique support portion 311 is formed with a plurality of second water outlets 350 spaced apart along the circumferential direction, the filter element 320 is arranged on the oblique support portion 311, and the filter element 320 covers the oblique support portion 311. It can be understood that the provision of a plurality of second water outlets 350 can increase the amount of water passing through the filter module 300, thereby improving the filtering efficiency. Moreover, the provision of an annular filter element 320, which is directly covered on the oblique support portion 311, can increase the stability of the installation of the filter element 320, and compared with the solution of providing a filter element 320 for one 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 one second water outlet 350.

[0052] Furthermore, the two adjacent oblique support portions 311 extend in opposite directions along the axial direction, so that the width of the second water outlet 350 on the side close to the inner ring edge is smaller than the width of the second water outlet 350 on the side close to the outer ring edge; it can be understood that the oblique support portion 311 is gradually expanded in the direction from the inner ring edge to the outer ring edge, so that the width of the second water outlet 350 on the side close to the inner ring edge is smaller than the width of the second water outlet 350 on the side close to the outer ring edge, and more second water outlets 350 can be arranged on the limited area of ​​the oblique support portion 311, which is conducive to increasing the water flow area, thereby improving the filtering efficiency of the filter module 300. Of course, the present solution is not limited to this. In other embodiments, the width of the second water outlet 350 on the side close to the inner ring edge can also be greater than the width of the second water outlet 350 on the side close to the outer ring edge.

[0053] Among them, the two filter elements 320 are respectively formed on the sides of the two oblique support portions 311 that are opposite to each other, and the second water outlet 350 is arranged in a fan-shaped or trapezoidal shape. Since the filter element 320 is arranged in a ring shape, the diameter of the filter element 320 gradually decreases from the outer ring edge to the inner ring edge, so that the second water outlet 350 is fan-shaped or trapezoidal and the width of the filter element 320 gradually decreases from the outer ring edge to the inner ring edge. In this way, the utilization rate of the oblique support portion 311 can be increased, and more second water outlets 350 can be arranged in a limited area, thereby increasing the water flow rate of the filter module 300, and then improving the filtration efficiency.

[0054] Optionally, the oblique support portion 311 includes a plurality of support ribs spaced apart along the circumferential direction, a second water outlet 350 is formed between every two adjacent support ribs, and the first water outlet 330 is arranged on the inner circumference of the first ring portion 312. Such a support skeleton 310 is simple to form, and the support ribs can increase the strength of the oblique support portion 311, reducing the probability of the oblique support portion 311 breaking when the water flow is too large. Of course, the present invention is not limited to this, and in other embodiments, the oblique support portion 311 can also be configured as a conical plate, and a plurality of second water outlets 350 are formed on the conical plate.

[0055] The two ends of the support rib are respectively connected to the first ring portion 312 and the second ring portion 313 , and the inner periphery of the first ring portion 312 of the support frame 310 is provided with a first water outlet 330 .

[0056] Optionally, the filter module 300 is provided with a filter element 320 corresponding to an oblique support portion 311, and the two filter elements 320 are tapered in opposite directions, which can greatly increase the filter area of ​​the filter module 300, thereby improving the filter efficiency of the filter module 300. Of course, the present invention is not limited to this, and in other embodiments, the filter module 300 can also form only one filter element, and the filter element entirely covers the support frame 310.

[0057] Furthermore, the two filter elements 320 are tapered in the direction away from each other, which can reduce the space occupied by the filter module 300 in the water filter cavity, thereby helping to reduce the volume of the filter bottle. Of course, the present invention is not limited to this, and in other embodiments, the two filter elements 320 can also be tapered in the direction close to each other.

[0058] Optionally, the two filter elements 320 have the same shape and / or cone angle, which can increase the consistency of the filter module 300 and facilitate manufacturing. Of course, the present invention is not limited to this, and in other embodiments, the shapes and / or cone angles of the two filter elements may also be different.

[0059] Optionally, the material of the support frame 310 is configured as plastic. First, the cost of plastic materials is lower than that of other materials such as metals, which helps to reduce the manufacturing cost of the filter module 300. Second, the plastic material has good corrosion resistance to various chemical substances and can be used for a long time in various corrosive environments, reducing the damage and replacement frequency of the filter module 300 caused by corrosion. Third, due to the low density of the plastic material, the overall weight of the support frame 310 is reduced, which is convenient for installation, transportation and maintenance. Fourth, due to the good processing performance of the plastic material, the filter frame of various shapes and sizes can be made by various processes such as injection molding and extrusion, which is convenient for the processing and molding of the support frame 310. Of course, the present invention is not limited to this. In other embodiments, the material of the support frame 310 can also be configured as metal.

[0060] Optionally, the filter element 320 is made of metal; this is because metal materials are durable and stable, which can increase the service life of the filter element 320, thereby effectively filtering water for a long time, reducing the replacement frequency and cost. Of course, the present invention is not limited to this, and in other embodiments, the filter element 320 can also be made of plastic.

[0061] In this embodiment, the filter element 320 is configured as a metal filter screen, which has a solid structure and can withstand certain pressure and impact to ensure safety during use. Moreover, the metal filter screen can be customized according to user needs, such as customizing equipment of non-standard size, etc., to meet the use requirements under different support frames 310. Furthermore, since the metal filter screen can be rinsed and is easy to clean. Of course, the present invention is not limited to this. In other embodiments, the filter element 320 can also be configured as a filter membrane.

[0062] Optionally, the filter element 320 and the support frame 310 are integrally injection molded. It should be noted that the filter element 320 is a metal part, and the material of the support frame 310 is plastic. The integral injection molding referred to here refers to insert injection molding, and the filter element 320 is embedded in the surface of the support frame 310. This is because the integral injection molding can directly combine the filter element 320 with the plastic support frame 310 during the injection molding process, avoiding secondary processing steps such as hot melting, welding, and riveting, thereby shortening the assembly time and reducing production costs. Moreover, embedding the filter element 320 in the support frame 310 can improve the installation strength of the filter element 320, so that it can withstand greater loads and impacts. Of course, the present invention is not limited to this. In other embodiments, the filter element 320 and the support frame 310 can also be bonded or welded.

[0063] Specifically, during the installation of the filter element 320 and the support frame 310, the filter element 320 is first installed in the mold and integrally formed with the frame structure by injection molding. The filter element 320 is welded to the surface of the plastic support frame 310 by the high temperature in the mold.

[0064] 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 repeated here one by one.

[0065] 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.

[0066] The present invention also proposes a water system, which includes a pre-filter. The specific structure of the pre-filter refers to the above embodiment. Since the water system adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Among them, the water system at least includes related components from the pre-filter to the water end. For example, the water system can include household appliances such as water heaters, dishwashers, and water dispensers, and can also include accessories such as water pipes for domestic water in the whole house.

[0067] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied 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: A water passage cavity is formed inside the filter module, and a first water passage and a second water passage are formed on the filter module to communicate with the water passage cavity. The filter module includes a filter element arranged at the second water passage, and the filter element is arranged in an annular shape and has an inner ring edge and an outer ring edge, and the outer ring edge is located on one axial side of the inner ring edge.

2. The filter module according to claim 1, characterized in that: The filter module further includes a support frame, the water passage cavity is formed inside the support frame, the first water passage is formed in the support frame, the support frame further includes an inclined support portion, and the second water passage is arranged in the inclined support portion.

3. The filter module according to claim 2, characterized in that: The support skeleton also includes a first ring portion and a second ring portion. Two oblique support portions are provided. The two oblique support portions are distributed along the axial direction. The first ring portion or the second ring portion is respectively connected to both sides of the axial direction of the two oblique support portions. The water passage cavity is formed between the two oblique support portions.

4. The filter module according to claim 3, characterized in that: The oblique support portion is formed with a plurality of the second water outlets spaced apart along the circumferential direction, and the filter element is arranged on the oblique support portion.

5. The filter module according to claim 4, characterized in that: The two adjacent oblique support portions extend in opposite directions along the axial direction, so that the width of the second water outlet on the side close to the inner ring edge is smaller than the width of the second water outlet on the side close to the outer ring edge.

6. The filter module according to claim 4, characterized in that: The oblique support portion includes a plurality of support ribs spaced apart along the circumferential direction, 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.

7. The filter module according to claim 3, characterized in that: A filter element is provided corresponding to each of the inclined support portions, and the two filter elements are tapered in opposite directions.

8. The filter module according to claim 7, characterized in that: The two filter elements are tapered in opposite directions.

9. The filter module according to claim 2, characterized in that: The support frame is made of plastic.

10. The filter module according to claim 9, characterized in that: The filter element is made of metal.

11. The filter module according to claim 10, characterized in that: The filter element and the support frame are integrally injection-molded.

12. The filter module according to any one of claims 1 to 11, characterized in that: The filter element is arranged in a ring-cone shape.

13. A filter assembly, characterized in that: It comprises a plurality of filter modules according to any one of claims 1 to 12, and two adjacent filter modules are connected through the first water outlet.

14. A pre-filter, characterized in that: The pre-filter comprises the filter assembly according to claim 13.

15. A water system, characterized in that: Comprising the pre-filter as claimed in claim 14.

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