CN115253404A - Kettle and filter element - Google Patents

Abstract

The kettle of the present invention includes a filter element and an inner tank. The filter element includes a seat body, an upper cover sealingly connected to the seat body, and a filter material inside the seat body. The filter element is cup-shaped and includes a peripheral wall and a bottom wall of the seat body connected to the peripheral wall. The middle part of the bottom wall of the seat body is recessed inward to form a notch part, the upper bottom of the notch part has an inner hole, the outer side of the top end of the peripheral wall is provided with a water passage along the circumferential direction, and the bottom wall of the seat body is provided with a bottom opening. The inner tank includes a cup base and a water delivery device integrally formed on the upper part of the cup base, the cup base includes a cup body and a water outlet device arranged on the bottom wall of the cup body, the filter element is accommodated in the cup body, and the seat body of the filter element and the cup body A side flow channel is formed, the water outlet device is inserted into the notch, the bottom wall of the filter element seat body and the cup body bottom wall of the cup seat form a bottom flow channel that communicates with the side flow channel, the water delivery device is communicated with the water passage, and the water outlet device is connected to the filter element. The bottom wall of the seat body is sealed and connected. Among them, the water to be filtered enters the filter element through the side flow channel, the bottom flow channel and the bottom opening on the base of the seat body. Under the action of pressure, the filter material flows upward from the bottom of the filter element and converges into the cylinder body, passing through the water channel of the valve body. Out of the cup holder.

Description

Kettle and Filter

technical field

The invention relates to the technical field of water filtration, in particular to a kettle and a filter element.

Background technique

At present, most of the filter elements on the market use upper openings. The filter material is in the shell of the filter element, and the water outlet is at the bottom of the shell. , to achieve the effect of filtration. Due to the fast water flow, the filtration effect of this method is poor. After a period of use, the filter material will form compaction. In addition, the air in the water rises and easily forms air bubbles on the upper hole, reducing the water inflow into the filter element.

Contents of the invention

The main purpose of the present invention is to provide a kettle. The kettle can press the water to be filtered into the filter element from the bottom of the filter element and discharge it from the middle of the filter element to improve the filtering effect and prevent the filter material from being hardened.

In order to realize the above-mentioned purpose of the invention, the present invention adopts following technical scheme:

According to one aspect of the present invention, a kettle is provided, which includes a filter element and an inner tank. The filter element comprises a base body, an upper cover sealedly connected to the base body and a filter material inside the base body. The filter element is cup-shaped and includes a peripheral wall and a seat bottom wall connected to the peripheral wall. The middle part of the bottom wall of the seat is inwardly recessed to form a notch, the upper bottom of the notch has an inner hole, the top end of the peripheral wall is provided with a water passing part along the circumferential direction, and the bottom wall of the seat is provided with Bottom opening. The liner includes a cup holder and a water delivery device integrally formed on the upper part of the cup holder, the cup holder includes a cup body and a water outlet device arranged on the bottom wall of the cup body, the filter element is accommodated in the cup Inside the body, and a side channel is formed between the seat of the filter element and the cup, the water outlet device is inserted into the notch, the bottom wall of the seat of the filter element and the bottom wall of the cup of the cup seat A bottom flow channel communicating with the side flow channel is formed, the water delivery device is in communication with the water passing part, and the water outlet device is in sealing connection with the bottom wall of the seat body of the filter element. Wherein, the water to be filtered enters the filter element through the side flow channel, the bottom flow channel and the bottom opening on the seat base, and flows upward from the bottom of the filter element to the filter material under the action of pressure. The middle converges into the barrel, and flows out of the cup seat through the water channel of the valve body.

According to an embodiment of the present invention, wherein the water outlet device is a valve body, the valve body includes a valve seat affixed to the bottom of the cup seat and a valve core embedded in the valve seat, the valve core and the valve core are The valve seat is formed with a water outlet channel.

According to an embodiment of the present invention, wherein, the kettle further includes a cylindrical body with openings at both ends, the cylindrical body is arranged on the notch, and the water to be filtered flows upward from the bottom of the filter element under the action of pressure. Flow through the filter material and gather in the middle into the cylinder and then enter the notch through the inner hole on the notch, the upper mouth of the cylinder is fixed with a support filter material and allows filtration A support filter through which water passes.

According to an embodiment of the present invention, wherein, the kettle further includes protruding strips arranged on both sides of the water outlet device, and the protruding strips support the filter element so that the bottom wall of the seat body of the filter element is in contact with the The bottom wall of the cup body of the cup seat forms a bottom flow channel communicating with the side flow channel.

According to another aspect of the present invention, a filter element is provided. The filter element comprises a base body, an upper cover sealedly connected to the base body and a filter material inside the base body. Wherein, the filter element is cup-shaped, including a peripheral wall and a seat bottom wall connected to the peripheral wall, the middle part of the seat bottom wall is inwardly recessed to form a notch, and the upper bottom of the notch has an inner hole , the top end of the surrounding wall is provided with a water passing part along the circumferential direction, and the bottom wall of the base body is provided with a bottom opening.

According to an embodiment of the present invention, wherein, the bottom wall of the base body is further provided with a sealing structure surrounding the inner hole.

According to an embodiment of the present invention, wherein, the sealing structure includes a sealing ring, a sealing ring pressing plate, and an installation groove located at the bottom of the filter element around the notch, and the sealing ring pressing plate fixes the sealing ring The installation groove at the bottom of the filter element is used to seal the gap between the filter element and the water outlet device.

According to an embodiment of the present invention, wherein both the sealing ring and the sealing ring holding plate are annular structures, the sealing ring is provided with at least one through hole, and the sealing ring holding plate corresponds to the at least one The through hole is provided with at least one cylindrical protrusion, wherein the at least one cylindrical protrusion passes through the at least one through hole and is fixed to the bottom of the filter element.

According to an embodiment of the present invention, wherein, the outer side of the top end of the surrounding wall is provided with a convex edge along the circumferential direction, and the convex edge is used to connect to the cup body, and the water passing part is opened on the convex edge, and the water passing part The side channel leading to the cup holder and the side wall of the filter element leads to the bottom opening.

According to an embodiment of the present invention, wherein, the top end of the surrounding wall is an elliptical structure, the number of the water passing parts is four and arranged symmetrically with respect to the center of the top end of the surrounding wall, and the bottom wall of the seat body is an ellipse There are 4 bottom openings, which are symmetrical with respect to the center of the bottom wall of the seat and communicate with the filter element and the cup holder.

An embodiment of the above invention has the following advantages or beneficial effects:

The kettle in the embodiment of the present invention includes two parts: a filter core and an inner container. A water passing part is formed outside the top of the seat surrounding wall of the adjacent filter core, and the side flow channel formed by the water passing part, the cup holder and the side wall of the filter core is passed. The bottom wall of the seat body of the filter element and the cup body bottom wall of the cup seat form a bottom flow channel, and the bottom wall of the seat body of the filter element is provided with a bottom opening to communicate with the bottom flow channel, and the notch of the seat body bottom wall The upper part contacts and communicates with the inside of the seat body, the filtered water enters the water outlet device from the seat body through the notch and finally flows out of the cup holder, and the water outlet device is sealed and connected with the bottom wall of the seat body, thereby forming an S-shaped water flow path. Because the water flow flows from the bottom of the filter element to the top under the action of pressure to form a turbulent flow, which improves the filtering effect of the filter material and prevents the filter material from being hardened by direct water.

Description of drawings

The above and other features and advantages of the present invention will become more apparent by describing in detail example embodiments thereof with reference to the accompanying drawings.

Fig. 1 is an exploded view of a filter element shown according to an exemplary embodiment.

Fig. 2 is a top view of a water filtering device according to an exemplary embodiment.

Fig. 3 is a cross-sectional view along the direction A-A in Fig. 2 according to an exemplary embodiment.

Fig. 4 is an enlarged view of part B in Fig. 3 according to an exemplary embodiment.

Fig. 5 is a schematic diagram of an inner container according to an exemplary embodiment.

Wherein, the reference signs are explained as follows:

1. Filter element; 10. Support filter piece; 11. Base body; 12. Upper cover; 13. Filter material; 14. Cylinder; Bottom opening; 19, filter sheet; 2, cup seat; 21, cup body; 211, cup body bottom wall; 22, valve body; 221, valve seat; 222, valve core; 223, water outlet channel; 23, raised bar ; 3, water delivery device; 4, sealing ring; 41, through hole; 5, sealing ring pressure plate; 51, cylindrical protrusion;

Detailed ways

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.

The terms "a", "an", "the", "said" are used to indicate the presence of one or more elements/components/etc; the terms "comprising" and "have" are used to indicate an open-ended inclusion means and means that additional elements/components/etc. may be present in addition to the listed elements/components/etc.

As shown in Figures 1 to 4, Figure 1 shows an exploded view of a filter element 1 provided by the present invention. Fig. 2 shows a top view of the water filtering device provided by the present invention. Fig. 3 shows a sectional view along the A-A direction in Fig. 2 provided by the present invention. Fig. 4 shows an enlarged view of part B in Fig. 3 provided by the present invention. Fig. 5 shows a schematic view of the inner container 6 provided by the present invention.

The kettle provided by the present invention includes a filter element 1 and an inner tank 6 . The filter element 1 includes a base body 11 , an upper cover 12 sealingly connected with the base body 11 and a filter material 13 inside the base body 11 . The filter element 1 is cup-shaped and includes a peripheral wall and a seat bottom wall 17 connected to the peripheral wall. The middle part of the bottom wall 17 of the seat is inwardly recessed to form a notch, the upper bottom of the notch has an inner hole, the outer side of the top end of the peripheral wall is provided with a water passage 16 in the axial direction, and the bottom wall 17 of the seat is provided with a bottom opening 18 . The liner 6 includes a cup holder 2 and a water transfer device 3 integrally formed on the top of the cup holder 2 . The cup holder 2 includes a cup body 21 and a water outlet device disposed on the bottom wall 211 of the cup body. The filter element 1 is accommodated in the cup body 2 . A side channel is formed between the seat body 11 and the cup body 21 of the filter element 1 . The water outlet device is inserted into the notch. The seat bottom wall 17 of the filter element 1 and the cup bottom wall 211 of the cup seat 2 form a bottom flow channel communicating with the side flow channel. Wherein, the water to be filtered enters the filter element 1 through the side flow channel, the bottom flow channel and the bottom opening 18 on the seat base 17, and flows upward from the bottom of the filter element 1 to the filter material 13 under the action of pressure and converges into the notch in the middle. The cup holder 2 flows out through the water channel 223 of the water outlet device.

As shown in FIGS. 1 to 5 , the X axis represents the horizontal direction, and the Y axis represents the vertical direction. The seat body 11 of the filter element 1 is closed around and at the bottom, and the upper part is open. Preferably, the base body 11 is a hollow cuboid. The upper part is closed by a loam cake 12 . Preferably, the upper cover 12 is provided with an air outlet hole, so as to separate the water inflow and the air outflow, that is, gas-liquid separation. The filter material 13 is located inside the base 11, and is arranged in the inner space of the seat body 11, preferably filling the space. The notch extends upward from the inner bottom of the seat body 11 and does not contact the upper cover 12 . The notch is preferably located in the middle of the base wall 17 . The water passing part 16 communicates with the channel formed by the side wall of the cup holder 2 and the filter element 1 . The bottom opening 18 connects the inside of the seat body 11 of the filter element 1 with the side channel formed by the seat body bottom wall 17 of the filter element 1 and the cup body bottom wall 211 of the cup holder 2 . The upper part of the notch communicates with the inside of the seat body 11 again. The filtered water flows into the notch and then enters the water outlet device, and flows out of the cup holder 2 from the water channel 223 of the water outlet device, thus forming an S-shaped water channel. The water to be filtered entering the filter element 1 has gravity to form a certain water pressure. Under the action of the pressure, the water to be filtered flows upward from the bottom of the seat 11 of the filter element 1 to form a turbulent flow, which improves the filtering effect of the filter material 13. It also prevents the filter material 13 from hardening caused by the direct flow of water. Between the convex edge 15 of the peripheral wall of the base body 11 and the upper edge of the cup body 21, a filter sheet 19 is provided for preliminary filtering of the filtered water and allowing the filtered water to enter the side channel through the water passing portion 16.

In a preferred embodiment of the present invention, the water outlet device is a valve body 22. The valve body 22 includes a valve seat 221 fixed to the bottom of the cup seat 2 and a valve core 222 embedded in the valve seat 221. The valve core 222 and the valve seat 221 form a There are 223 water outlets.

As shown in FIGS. 3 to 4 , the position of the valve body 22 corresponds to the position of the notch portion, and the valve body 22 can be inserted into the notch portion. The spool 222 can rotate and rise. At the initial position of the valve core 222, the outlet waterway 223 is closed. When the water outlet channel 223 needs to be opened, the valve core 222 needs to be rotated upward so that the valve core 222 and the valve seat 221 form a passage, that is, the water outlet channel 223 .

In a preferred embodiment of the present invention, the kettle also includes a cylindrical body 14 with openings at both ends, the cylindrical body 14 is arranged on the notch, and the water to be filtered flows upward from the bottom of the filter element 1 to the filter material 13 under the action of pressure. Converge in the middle and enter the cylinder 14 and then enter the notch through the inner hole on the notch; the upper mouth of the cylinder 14 is fixedly connected with a support filter 10 that supports the filter material 13 and allows filtered water to pass through.

As shown in FIGS. 1 and 3 , the cylindrical body 14 functions as an extension of the notch portion. The cylinder body 14 is at a certain distance from the upper cover 12 of the filter element 1, which ensures that the seat body 11 of the filter element 1 will not be isolated into two independent parts, and ensures that the water to be filtered enters the seat body 11 as much as possible with the filter material. 13 contacts for better filtering effect. The supporting filter sheet 10 supports the filter material 13 and prevents the filter material 13 from entering into the notch portion. It also allows filtered water to pass therethrough into the recess. Preferably, the supporting filter sheet 10 is a non-woven sheet. Preferably, the non-woven sheet is welded to the upper opening of the cylinder body 14 , or embedded in the circumferential depression of the upper opening of the cylinder body 14 when the wall of the upper opening of the cylinder body 14 has a circumferential depression.

In a preferred embodiment of the present invention, the kettle also includes raised strips 23 arranged on both sides of the water outlet device. The raised strips 23 support the filter element 1 so that the seat bottom wall 17 of the filter element 1 is in contact with the cup body of the cup holder 2. The bottom wall 211 forms a bottom flow channel communicating with the side flow channel.

The protruding strips 23 are respectively arranged on both sides of the water outlet device and are in the shape of a figure-eight protruding strip 23 . It can stably support the filter element 1 and hold up the filter element 1 to keep a certain distance from the bottom wall 211 of the cup holder.

The filter element 1 provided by the present invention includes a base body 11 , an upper cover 12 sealingly connected with the base body 11 and a filter material 13 inside the base body 11 . The seat body 11 is cup-shaped and includes a peripheral wall and a seat body bottom wall 17 connected to the peripheral wall. The middle part of the bottom wall 17 of the seat is inwardly recessed to form a notch, the upper bottom of the notch has an inner hole, the outer side of the top end of the peripheral wall is provided with a water passage 16 in the axial direction, and the bottom wall 17 of the seat is provided with a bottom opening 18 .

As shown in Figures 1 to 3, the water passing part 16 of the filter element 1 cooperates with the bottom opening 18 to realize that the water to be filtered outside the filter element 1 enters the external parts of the filter element 1 from the water passing part under the action of pressure. After entering the filter element 1 through the bottom opening 18 after the bottom of the channel, the filtered water flows from bottom to top in the filter element 1, which is beneficial for the filtered water to form turbulent flow in the filter element 1 to enhance the filtering effect.

In a preferred embodiment of the present invention, a sealing structure surrounding the inner hole is also provided on the base body bottom wall 17 .

As shown in FIGS. 3 to 4 , the sealing structure prevents water from flowing into the filter element 1 from the inner hole of the notch.

In a preferred embodiment of the present invention, the sealing structure includes a sealing ring 4, a sealing ring pressing plate 5 and an installation groove located at the bottom of the filter element 1 around the notch, and the sealing ring pressing plate 5 fixes the sealing ring 4 to the bottom of the filter element 1. Install the groove to seal the gap between the filter element 1 and the water outlet.

As shown in FIG. 1 , FIG. 3 to FIG. 4 , the installation groove is located on the outside of the bottom of the filter element 1 extending outward from the outlet device beyond the notch. It is difficult to ensure that there is no gap between the water outlet device and the notch. The sealing ring 4 is arranged here to play a sealing role, and the sealing ring pressing plate 5 plays a fixing role to fix the sealing ring 4 in the installation groove.

In a preferred embodiment of the present invention, both the sealing ring 4 and the sealing ring pressing plate 5 are annular structures, the sealing ring 4 is provided with at least one through hole 41, and the sealing ring pressing plate 5 is provided with at least one through hole 41 corresponding to At least one cylindrical protrusion 51 , wherein at least one cylindrical protrusion 51 passes through at least one through hole 41 and is fixed to the bottom of the filter element 1 .

As shown in Figure 1, Figure 3 to Figure 4, the mounting groove is a circumferential groove. The circumference of the sealing ring 4 seals the gap between the notch and the water outlet device. The sealing ring 4 is provided with several through holes 41, and the sealing ring pressing plate 5 is provided with corresponding cylindrical protrusions 51, and the sealing ring 4 is realized by inserting the cylindrical protrusions 51 into the through holes 41 and then affixed to the bottom of the cup holder 2. Sealed and fixed. The fixing method can be welding or threaded connection.

In a preferred embodiment of the present invention, a convex edge 15 is provided on the outer side of the top end of the peripheral wall along the circumference, and the convex edge 15 is used to connect to the cup body 21. A water passage 16 is provided on the convex edge 15, and the water passage 16 leads to the cup The side channel formed by the side wall of the seat 2 and the filter element 1 leads to the bottom opening 18 .

As shown in FIG. 3 , the convex edge 15 is sealingly connected to the cup body 21 in the circumferential direction. Thereby, it is ensured that the convex edge 15 and the cup body 21 are sealed except for the water passing portion 16 .

In a preferred embodiment of the present invention, the top end of the surrounding wall has an elliptical structure, and there are four water passing parts 16 arranged symmetrically with respect to the center of the top end of the surrounding wall. The bottom wall 17 of the seat body 11 is an elliptical structure, There are four bottom openings 18 , which are symmetrical to the center of the bottom wall 17 of the seat body and communicate with the filter element 1 and the cup holder 2 .

As shown in FIG. 1 to FIG. 3 , the two sides of the water passing portion 16 close to the top end of the peripheral wall are arranged symmetrically with respect to the center of the ellipse. Moreover, the water passing portion 16 is similar to a notch. Bottom openings 18 are also arranged on both sides of the base body bottom wall 17 , and are arranged symmetrically with respect to the center of the base body bottom wall 17 . The filter element 1 is erected, and the base bottom wall 17 of the filter element 1 and the cup bottom wall 211 of the cup holder 2 form a bottom flow channel. In this way, under the action of pressure, the water to be filtered will enter the base 11 of the filter element 1 through the bottom opening 18 .

The water filtering device of the embodiment of the present invention includes two parts: filter element 1 and cup holder 2. The seat body 11 of the filter element 1 is provided with a water passing portion 16 along the convex edge 15, and passes through the water passing portion 16 and the side of the cup holder 2 and the filter element 1. The side flow channel formed by the wall is connected, the base body bottom wall 17 of the filter element 1 and the cup body bottom wall 211 of the cup holder 2 form a bottom flow channel, and the base body bottom wall 17 of the filter element 1 is provided with a bottom opening 18 to communicate with the bottom flow channel, A cylinder 14 is provided on the notch of the bottom wall 17 of the seat body. The cylinder body 14 is not in contact with the upper part of the seat body 11 and communicates with the interior of the seat body 11. The filtered water enters the valve body 22 from the seat body 11 through the cylinder body 14. Flow out of the cup holder 2 to form an S-shaped water flow path. Because the water flow flows from the bottom of the filter element 1 to the top under the action of pressure to form a turbulent flow, which improves the filtering effect of the filter material 13 and prevents the filter material 13 from compacting caused by the direct flow of water. The upper cover 12 is provided with a ventilation hole, and the ventilation hole and the water inlet hole are different holes so as to realize gas-liquid separation.

In the embodiments of the invention, the term "plurality" refers to two or more, unless otherwise clearly defined. Terms such as "installation", "connection" and "fixation" should be interpreted broadly, for example, "connection" can be a fixed connection, a detachable connection, or an integral connection. Those of ordinary skill in the art can understand the specific meanings of the above terms in the embodiments of the present invention according to specific situations.

In the description of the embodiments of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper" and "lower" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present invention and The description is simplified, but does not indicate or imply that the referred device or unit must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the embodiments of the present invention.

In the description of this specification, the description of the terms "one embodiment", "one preferred embodiment" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one implementation of the embodiment of the invention example or examples. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above are only preferred embodiments of the embodiments of the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various modifications and changes may be made to the embodiments of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the embodiments of the present invention shall be included in the protection scope of the embodiments of the present invention.

Claims (10)

1. A water jug, comprising:

the filter element comprises a seat body, an upper cover connected with the seat body in a sealing way and a filter material positioned in the seat body, the filter element is cup-shaped and comprises a peripheral wall and a seat body bottom wall connected with the peripheral wall, the middle part of the seat body bottom wall is inwards sunken to form a notch part, the upper bottom of the notch part is provided with an inner hole, the outer side of the top end part of the peripheral wall is provided with a water passing part along the circumferential direction, and the seat body bottom wall is provided with a bottom opening; and

the inner container comprises a cup seat and a water delivery device integrally formed at the upper part of the cup seat, the cup seat comprises a cup body and a water outlet device arranged on the bottom wall of the cup body, the filter element is accommodated in the cup body, a side flow channel is formed between the seat body of the filter element and the cup body, the water outlet device is inserted into the notch part, a bottom flow channel communicated with the side flow channel is formed between the seat body bottom wall of the filter element and the cup body bottom wall of the cup seat, the water delivery device is communicated with the water passing part, and the water outlet device is hermetically connected with the seat body bottom wall of the filter element;

the water to be filtered enters the filter element through the side flow passage, the bottom flow passage and the bottom opening on the base body base, flows upwards through the filter material from the bottom of the filter element under the action of pressure, is converged towards the middle and enters the notch part, and flows out of the cup base through the waterway passage of the water outlet device.

2. The kettle of claim 1, wherein the water outlet device is a valve body, the valve body comprises a valve seat fixedly connected to the bottom of the cup seat and a valve core embedded in the valve seat, and a water outlet channel is formed between the valve core and the valve seat.

3. The water kettle as claimed in claim 1, further comprising a barrel body with openings at two ends, wherein the barrel body is arranged on the notch portion, the water to be filtered flows upward from the bottom of the filter element through the filter material under the action of pressure and converges towards the middle to enter the barrel body and then enters the notch portion through the inner hole on the notch portion, and a support filter sheet for supporting the filter material and allowing the filtered water to pass is fixedly connected to the upper opening of the barrel body.

4. The pitcher of claim 1, further comprising raised strips disposed on both sides of the outlet, the raised strips supporting the filter element such that the bottom wall of the filter element and the bottom wall of the cup body form a bottom flow channel in communication with the side flow channel.

5. A filter cartridge, comprising: pedestal, sealing connection in the upper cover of pedestal with be located the inside filter material of pedestal, wherein, the filter core is cup-shaped, including the perisporium with connect in the pedestal diapire of perisporium, the middle part of pedestal diapire is inwards sunken to form notch portion, the upper end of notch portion has the hole, the perisporium top portion outside is equipped with water portion along circumference, be equipped with the bottom outlet on the pedestal diapire.

6. The filter cartridge of claim 5, wherein the bottom wall of the housing body is further provided with a sealing structure surrounding the inner hole.

7. The kettle of claim 6, wherein the sealing structure comprises a sealing ring, a sealing ring pressing plate and a mounting groove arranged at the bottom of the filter element and surrounding the notch, the sealing ring pressing plate fixedly connects the sealing ring to the mounting groove at the bottom of the filter element to seal the gap between the filter element and the water outlet device.

8. The kettle of claim 7, wherein said sealing ring and said sealing ring pressing plate are both circular ring structures, at least one through hole is provided on said sealing ring, and at least one cylindrical protrusion is provided on said sealing ring pressing plate corresponding to said at least one through hole, wherein said at least one cylindrical protrusion passes through said at least one through hole and is fixedly connected to said filter element bottom.

9. The filter element of claim 5, wherein a convex edge is arranged on the outer side of the top end part of the peripheral wall along the circumferential direction, the convex edge is used for being connected with the cup body, the convex edge is provided with the water passing part, and the water passing part leads to a side flow passage formed by the cup seat and the side wall of the filter element and is communicated with the bottom opening.

10. The filter element according to claim 9, wherein the top end portion of the peripheral wall is in an oval structure, the number of the water passing portions is 4, and the water passing portions are symmetrically arranged relative to the center of the top end portion of the peripheral wall, the bottom wall of the housing body is in an oval structure, the number of the bottom openings is 4, and the bottom openings are symmetrically arranged relative to the center of the bottom wall of the housing body and communicate the filter element with the cup holder.

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