Filter element and coffee machine

Abstract

The utility model discloses a filter element and a coffee machine, and relates to the technical field of filtration, the filter element comprises a filter bottle, a filter structure and a central tube, one end of the filter bottle is provided with a micropore structure, the micropore structure is provided with a mounting hole, and the filter bottle is internally provided with a filter cavity; the filtering structure is arranged at one end of the filtering cavity away from the microporous structure; one end of the central pipe extends into the filtering cavity from the mounting hole and is detachably connected with the filtering structure; and the other end of the central pipe is clamped with the inner wall of the mounting hole. According to the technical scheme provided by the invention, water enters the filter cavity from the microporous structure, the filter cavity is filled with the filter material, the water enters one end of the central pipe from the filter structure after being filtered by the filter material, and then flows out from the other end of the central pipe, so that the water is filtered; the filter bottle, the filter structure and the central pipe are split into single parts, so that the difficulty of producing and forming the single parts is reduced, the aperture production precision of the filter structure is improved, and the leakage of a filter material is avoided.

Description

Technical Field

[0001] The present application relates to the field of filtration technology, and in particular to a filter element and a coffee machine. Background Art

[0002] As an automated brewing device, coffee machines are widely used in homes, offices, and commercial spaces. However, during the production process of existing coffee machine filter cartridges, due to the small particle size of the internal filter media, which is composed of granular carbon and resin, a microporous structure is required in the water outlet pipe to reduce filter media leakage. Currently, a structure integrating the microporous structure with the filter bottle or center hole is used. However, due to mold forming issues, the injection molding pressure of the small-aperture microporous structure cannot be too high, as excessive pressure can easily lead to pore blockage. Furthermore, because the flow path of the filter bottle or center tube is too long, low injection molding pressure can easily lead to material shortages at the flow channel edge of the injection molded part. This makes it difficult to produce microporous structures with smaller pore sizes, and filter cartridges still suffer from filter media leakage. Utility Model Content

[0003] The main purpose of this application is to provide a filter element and a coffee machine, aiming to solve the problem of easy leakage of filter material in existing filter elements.

[0004] To achieve the above objectives, the filter element proposed in this application includes:

[0005] A filter bottle, wherein one end of the filter bottle is provided with a microporous structure, the microporous structure is provided with a mounting hole, and the interior of the filter bottle is provided with a filter cavity;

[0006] A filter structure, the filter structure being arranged at one end of the filter cavity away from the microporous structure;

[0007] A central tube, one end of which extends from the mounting hole into the filter cavity and is detachably connected to the filter structure; and the other end of the central tube is clamped with the inner wall of the mounting hole.

[0008] In one embodiment, the central tube includes a water inlet section, a diversion section, and a water outlet section connected in sequence, the water inlet section is connected to the filtering structure, and the water outlet section is connected to the mounting hole; the diameter of the water inlet section is smaller than the diameter of the diversion section.

[0009] In one embodiment, the diameter of the water outlet section is greater than the diameter of the diversion section; and / or,

[0010] An inclined section is provided at the connection between the water outlet section and the diversion section.

[0011] In one embodiment, the end of the water outlet section is used to be connected to the water inlet of the coffee machine, and a sealing member is provided on the outer wall of the end of the water outlet section.

[0012] In one embodiment, a first clamping portion is provided at one end of the central tube, and the filter structure is provided with a clamping hole, and the first clamping portion is clamped into the clamping hole; and / or,

[0013] The other end of the central tube is provided with a second clamping portion, the inner wall of the mounting hole is provided with a third clamping portion, and the second clamping portion and the third clamping portion are clamped.

[0014] In one embodiment, the second clamping portion includes a protrusion, and the third clamping portion includes an abutting section formed by extending the hole wall of the mounting hole along the length direction of the central tube, and the abutting section abuts against the protrusion.

[0015] In one embodiment, the microporous structure extends from the inner wall of the filter cavity to the outer surface of the central tube, and the mounting hole is provided in the middle of the microporous structure.

[0016] In one embodiment, the filter bottle is provided with a timing device.

[0017] In one embodiment, the filter element further comprises a cover, and the cover is detachably connected to an end of the filter bottle away from the microporous structure.

[0018] The present application also proposes a coffee machine, comprising the filter element as described above, wherein the coffee machine is provided with a water inlet, and the water inlet is connected to an end of the central tube close to the mounting hole.

[0019] The technical solution of the present application is to provide a microporous structure at one end of the filter bottle, a mounting hole is provided on the microporous structure, and a filter cavity is provided inside the filter bottle; the filter structure is then provided at the end of the filter cavity away from the microporous structure; and one end of the central tube is extended from the mounting hole into the filter cavity and is detachably connected to the filter structure; the other end of the central tube is clamped with the inner wall of the mounting hole. Among them, water enters the filter cavity from the microporous structure, and the filter cavity is used to fill filter media. After being filtered by the filter media, the water enters one end of the central tube from the filter structure, and then flows out from the other end through the central tube to complete the filtration of the water. By splitting the filter bottle, filter structure and central tube into individual components, the filter bottle, filter structure and central tube can be demolded separately during production, which reduces the difficulty of production and molding, so as to improve the production accuracy of the filter structure, realize the production of filter structures with smaller pore sizes, and reduce the leakage of filter media. In addition, one end of the central tube is inserted into the filter cavity from the mounting hole of the filter bottle and is detachably connected to the filter structure. The other end of the central tube is clamped with the inner wall of the mounting hole to complete the assembly. While ensuring that the filtering effect remains unchanged, the installation difficulty of the overall structure of the filter element is reduced, and assembly and subsequent disassembly and maintenance are convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application 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 application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0021] Figure 1 This is a schematic structural diagram of an embodiment of a filter element provided in this application;

[0022] Figure 2 This is a schematic diagram of the bottom structure of an embodiment of the filter element provided in this application;

[0023] Figure 3 This is a schematic diagram of the top structure of an embodiment of the filter element provided in this application;

[0024] Figure 4 This is a schematic diagram of the explosion structure of an embodiment of the filter element provided in this application;

[0025] Figure 5 This is a schematic structural diagram of the central tube of an embodiment of the filter element provided in this application.

[0026] Description of Figure Numbers:

[0027] 1. Filter bottle; 11. Microporous structure; 111. Mounting hole; 112. Abutment section; 12. Filter chamber; 2. Filter structure; 21. Snap-fit ​​hole; 22. Third snap-fit ​​portion; 3. Center tube; 31. First snap-fit ​​portion; 32. Second snap-fit ​​portion; 33. Water inlet section; 34. Diversion section; 35. Water outlet section; 36. Inclined section; 4. Timing device; 5. Cover; 6. Sealing element.

[0028] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0030] It should be noted that if the embodiments of the present application 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 under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting 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 it. 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 this application.

[0032] As an automated brewing device, coffee machines are widely used in homes, offices, and commercial spaces. However, during the production process of existing coffee machine filter cartridges, due to the small particle size of the internal filter media, which is composed of granular carbon and resin, a microporous structure is required in the water outlet pipe to reduce filter media leakage. Currently, a structure integrating the microporous structure with the filter bottle or center hole is used. However, due to mold forming issues, the injection molding pressure of the small-aperture microporous structure cannot be too high, as excessive pressure can easily lead to pore blockage. Furthermore, because the flow path of the filter bottle or center tube is too long, low injection molding pressure can easily lead to material shortages at the flow channel edge of the injection molded part. This makes it difficult to produce microporous structures with smaller pore sizes, and filter cartridges still suffer from filter media leakage.

[0033] In order to solve the above problems, the present application proposes a filter element.

[0034] See also Figures 1 to 5In one embodiment of the present application, the filter element includes a filter bottle 1, a filter structure 2 and a central tube 3. A microporous structure 11 is provided at one end of the filter bottle 1, a mounting hole 111 is provided on the microporous structure 11, and a filter cavity 12 is provided inside the filter bottle 1; the filter structure 2 is provided at one end of the filter cavity 12 away from the microporous structure 11; one end of the central tube 3 extends into the mounting cavity from the mounting hole 111 and is detachably connected to the filter structure 2; the other end of the central tube 3 is clamped with the inner wall of the mounting hole 111. Among them, water enters the filter cavity 12 from the microporous structure 11, and the filter cavity 12 is used to fill filter material. After being filtered by the filter material, the water enters one end of the central tube 3 from the filter structure 2, and then flows out from the other end through the central tube 3, completing the filtration of the water; by splitting the filter bottle 1, the filter structure 2 and the central tube 3 into individual components, the filter bottle 1, the filter structure 2 and the central tube 3 can be demolded separately during production, reducing the difficulty of production and molding, so as to improve the production accuracy of the filter structure 2, realize the production of the filter structure 2 with a smaller pore size, and reduce the leakage of filter material; in addition, one end of the central tube 3 is inserted into the filter cavity 12 from the mounting hole 111 of the filter bottle 1 and is detachably connected to the filter structure 2, and the other end of the central tube 3 is clamped with the inner wall of the mounting hole 111 to complete the assembly. While ensuring that the filtering effect remains unchanged, the installation difficulty of the overall structure of the filter element is reduced, and assembly and subsequent disassembly and maintenance are convenient.

[0035] In one embodiment, the central tube 3 includes a water inlet section 33, a flow guide section 34, and a water outlet section 35, which are connected in sequence. The water inlet section 33 is connected to the filter structure 2, and the water outlet section 35 is connected to the mounting hole 111. The diameter of the water inlet section 33 is smaller than the diameter of the flow guide section 34. Since the diameter of the water inlet section 33 is smaller than that of the flow guide section 34, the central tube 3 generates sufficient negative pressure at the highest point, thereby promoting the occurrence of a siphon phenomenon, allowing water to flow out of the filter bottle 1, and helping to ensure that the water flow can continue to pass through the filter material. The smaller diameter of the water inlet section 33 of the central tube 3 helps to throttle, that is, limit the speed of the water flow, which can ensure that the water flow has sufficient contact time with the filter material, thereby improving the filtration effect; since the contact time between the water body and the filter material is longer, the removal rate of calcium and magnesium ions in the water can be improved.

[0036] In one embodiment, the diameter of the outlet section 35 is larger than that of the diversion section 34. The larger diameter of the outlet section 35 facilitates the formation of airflow at the onset of siphoning. Specifically, the outlet section 35 provides a larger volume to accommodate more air, reducing the negative pressure required to initiate siphoning. During the siphoning process, the larger diameter of the outlet section 35 allows for faster water discharge, reducing the water's residence time in the central tube 3 and thereby improving overall drainage efficiency.

[0037] In one embodiment, an inclined section 36 is provided at the junction between the outlet section 35 and the diversion section 34. The inclined section 36 provides a smooth transition of water flow from the diversion section 34 to the outlet section 35, reducing resistance and turbulence when the water flows between the two sections, thereby helping to maintain the continuity and efficiency of the water flow.

[0038] In one embodiment, the end of the water outlet section 35 is connected to the water inlet of the coffee maker, and a seal 6 is provided on the outer wall of the end of the water outlet section 35. The seal 6 ensures that when the water outlet section 35 is connected to the water inlet of the coffee maker, there will be no water leakage at the connection. The seal 6 can be a rubber ring or other type of sealing material. The seal 6 is used to form a good seal between the water outlet section 35 and the water inlet of the coffee maker to prevent water leakage. In addition, the addition of the seal 6 can prevent air from entering the filter chamber 12 and disrupting the siphoning phenomenon within the central tube 3 and the filter chamber 12.

[0039] In one embodiment, filter structure 2 can utilize a filter cap with a grid structure to ensure uniform water flow through the filter element while intercepting the filter media within filter cavity 12 to prevent it from flowing out of central tube 3. The pore size of the grid structure needs to be smaller than the particle size of the filter media to prevent leakage through the grid. Separately molding filter structure 2 can improve production accuracy and reduce production difficulty, allowing for the production of grid structures with even smaller pore sizes. It should be noted that the filter media is composed of granular carbon and resin.

[0040] In one embodiment, a first engaging portion 31 is provided at one end of the central tube 3, and a engaging hole 21 is provided in the filter structure 2. The first engaging portion 31 is engaged with the engaging hole 21. To prevent the first engaging portion 31 from accidentally falling off during operation of the coffee machine, a locking structure, such as a slot, a lock, or a screw fastener, may be provided between the first engaging portion 31 and the engaging hole 21.

[0041] In one embodiment, a second engaging portion 32 is provided at the other end of the central tube 3, and a third engaging portion 22 is provided on the inner wall of the mounting hole 111. The second engaging portion 32 and the third engaging portion 22 are engaged with each other. The first engaging portion 31 of the central tube 3 and the third engaging portion 22 on the inner wall of the mounting hole 111 are engaged and disengaged. The second engaging portion 32 can be configured as a flange, and the third engaging portion 22 can be configured as a groove, to achieve rapid assembly and disassembly while ensuring a secure connection.

[0042] In one embodiment, the second engaging portion 32 includes a protrusion, and the third engaging portion 22 includes an abutment section 112 formed by extending the wall of the mounting hole 111 along the length of the central tube 3. The abutment section 112 abuts against the protrusion. This abutment between the abutment section 112 and the protrusion prevents the central tube 3 from being dislodged from the filter chamber 12 during operation of the coffee machine. Furthermore, the protrusions can be arranged along the circumference of the central tube 3 to facilitate abutment with the abutment section 112 of the third engaging portion 22, thereby improving connection stability.

[0043] In one embodiment, the microporous structure 11 extends from the inner wall of the filter cavity 12 to the outer surface of the central tube 3, and the mounting hole 111 is located in the middle of the microporous structure 11. The microporous structure 11 can extend from the inner wall of the filter cavity 12 to the outer surface of the central tube 3 to prevent the filter material from leaking out of the filter cavity 12. The location of the mounting hole 111 in the middle of the microporous structure 11 ensures that water flows evenly through the microporous structure 11 and enters the filter cavity 12.

[0044] In one embodiment, the filter bottle 1 is provided with a timing device 4, which includes a time recording disk having a time mark and a protrusion engraved thereon, the protrusion corresponding to the time mark. During use, the time recording disk is screwed to the time when the filter cartridge is installed, which facilitates the user to record the time. After the filter cartridge has been used for a period of time, the user may easily forget the usage time. However, the timing device 4 can remind the user to avoid forgetting the usage time and then forgetting to replace the filter cartridge, which may lead to poor filtration effect due to excessive use of the filter cartridge.

[0045] In one embodiment, the filter cartridge further comprises a cover 5, which is detachably connected to the end of the filter bottle 1 remote from the microporous structure 11. This detachable cover 5 facilitates the installation and replacement of the central tube 3 and the filter structure 2. The detachable connection between the cover 5 and the filter bottle 1 typically utilizes threads, snaps, or a sealing ring to ensure a tight seal at the connection, preventing water leakage or impurities from entering the filter cartridge, thereby ensuring effective filtration.

[0046] The technical solution of the present application is to provide a microporous structure 11 at one end of the filter bottle 1, a mounting hole 111 is provided on the microporous structure 11, and a filter cavity 12 is provided inside the filter bottle 1; then the filter structure 2 is provided at the end of the filter cavity 12 away from the microporous structure 11; and one end of the central tube 3 is extended from the mounting hole 111 into the filter cavity 12 and is detachably connected to the filter structure 2; the other end of the central tube 3 is clamped with the inner wall of the mounting hole 111. Among them, water enters the filter cavity 12 from the microporous structure 11, and the filter cavity 12 is used to fill filter material. After being filtered by the filter material, the water enters one end of the central tube 3 from the filter structure 2, and then flows out from the other end through the central tube 3, completing the filtration of the water; by splitting the filter bottle 1, the filter structure 2 and the central tube 3 into individual components, the filter bottle 1, the filter structure 2 and the central tube 3 can be demolded separately during production, reducing the difficulty of production and molding, so as to improve the production accuracy of the filter structure 2, realize the production of the filter structure 2 with a smaller pore size, and reduce the leakage of filter material; in addition, one end of the central tube 3 is inserted into the filter cavity 12 from the mounting hole 111 of the filter bottle 1 and is detachably connected to the filter structure 2, and the other end of the central tube 3 is clamped with the inner wall of the mounting hole 111 to complete the assembly. While ensuring that the filtering effect remains unchanged, the installation difficulty of the overall structure of the filter element is reduced, and assembly and subsequent disassembly and maintenance are convenient.

[0047] This application also provides a coffee machine including a filter cartridge. The specific structure of the filter cartridge is similar to that of the aforementioned embodiments. Since this coffee machine utilizes all of the technical solutions of all of the aforementioned embodiments, it possesses at least all of the beneficial effects of the technical solutions of the aforementioned embodiments, and therefore, no further details are provided herein. The coffee machine is provided with a water inlet, which communicates with the end of the central tube 3 proximal to the mounting hole 111.

[0048] The above are merely exemplary embodiments of the present application and are not intended to limit the patent scope of the present application. All equivalent structural transformations made using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A filter element, characterized in that: include: A filter bottle, wherein one end of the filter bottle is provided with a microporous structure, the microporous structure is provided with a mounting hole, and the interior of the filter bottle is provided with a filter cavity; A filter structure, the filter structure being arranged at one end of the filter cavity away from the microporous structure; A central tube, one end of which extends from the mounting hole into the filter cavity and is detachably connected to the filter structure; and the other end of the central tube is clamped with the inner wall of the mounting hole.

2. The filter element according to claim 1, wherein The central tube includes a water inlet section, a diversion section and a water outlet section connected in sequence, the water inlet section is connected to the filtering structure, and the water outlet section is connected to the mounting hole; the diameter of the water inlet section is smaller than that of the diversion section.

3. The filter element according to claim 2, characterized in that The diameter of the water outlet section is larger than the diameter of the diversion section; and / or, An inclined section is provided at the connection between the water outlet section and the diversion section.

4. The filter element according to claim 2, wherein: The end of the water outlet section is used to be connected to the water inlet of the coffee machine, and a sealing member is provided on the outer wall of the end of the water outlet section.

5. The filter element according to any one of claims 1 to 4, characterized in that One end of the central tube is provided with a first clamping portion, the filtering structure is provided with a clamping hole, and the first clamping portion is clamped into the clamping hole; and / or, The other end of the central tube is provided with a second clamping portion, the inner wall of the mounting hole is provided with a third clamping portion, and the second clamping portion and the third clamping portion are clamped.

6. The filter element according to claim 5, characterized in that The second clamping portion includes a protrusion, and the third clamping portion includes an abutting section formed by extending the hole wall of the mounting hole along the length direction of the central tube, and the abutting section abuts against the protrusion.

7. The filter element according to any one of claims 1 to 4, characterized in that The microporous structure extends from the inner wall of the filter cavity to the outer surface of the central tube, and the mounting hole is provided in the middle of the microporous structure.

8. The filter element according to any one of claims 1 to 4, characterized in that The filter bottle is provided with a timing device.

9. The filter element according to any one of claims 1 to 4, characterized in that The filter element further comprises a cover body, and the cover body is detachably connected to an end of the filter bottle away from the microporous structure.

10. A coffee machine, characterized in that: The coffee machine comprises a filter element as claimed in any one of claims 1 to 9, wherein the coffee machine is provided with a water inlet, and the water inlet is connected to an end of the central tube close to the mounting hole.

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