CN220370609U - Filter element, filter element assembly and water heater - Google Patents

Abstract

The utility model discloses a filter element, a filter element assembly and a water heater, wherein the filter element comprises a shell, and one end of the shell is provided with a water inlet and a water outlet; the filter material box is arranged in the shell, the filter material box comprises a filter material box upper cover and a filter material box lower shell, one side of the filter material box upper cover, which is far away from the water inlet, is provided with an annular filter screen extending along the circumferential direction of the filter material box upper cover, one end of the filter material box lower shell, which is close to the water inlet, stretches into the filter material box upper cover, the filter material box lower shell is internally used for accommodating filter materials, the outer peripheral wall of the filter material box upper cover and the shell jointly define a water inlet channel, the filter material box lower shell is internally provided with a water outlet channel, the peripheral wall of the filter material box lower shell is provided with a water inlet used for communicating the water inlet channel with the water outlet channel, and the filter material box upper cover is provided with a communication port used for communicating the water outlet channel with the water outlet.

Description

Filter element, filter element assembly and water heater

Technical Field

The utility model relates to the technical field of water heaters, in particular to a filter element, a filter element assembly and a water heater.

Background

Nowadays, more and more consumers pay attention to water quality health, and the transition from a simple water use scene to health fields such as skin moistening, skin soothing, skin beautifying and the like is gradually started. However, part of the filter elements are not easy to install in production, and filter materials are easy to spill in the use process after the filter elements are installed.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the filter element provided by the utility model reduces leakage of the filter material in the lower shell of the filter material box, and improves the use experience of a user.

The utility model also provides a filter element assembly comprising the filter element.

The utility model also provides a water heater which comprises the filter element assembly.

A filter cartridge according to an embodiment of the present utility model includes: the shell is provided with a water inlet and a water outlet at one end; the filter material box, the filter material box is located in the casing, the filter material box includes filter material box upper cover and filter material box inferior valve, one side of filter material box upper cover deviates from the water inlet has the edge the annular filter screen that the circumferencial direction of filter material box upper cover extends, the one end that is close to of filter material box inferior valve the water inlet stretches into in the filter material box upper cover, be used for holding the filter material in the filter material box inferior valve, the periphery wall of filter material box upper cover with the casing defines jointly the water inlet channel, the water outlet channel is defined in the filter material box inferior valve, have on the periphery wall of filter material box inferior valve be used for the intercommunication the water inlet channel with the water outlet channel's water inlet, the filter material box is covered and is had the intercommunication mouth that is used for the intercommunication the water outlet channel with the delivery port.

According to the filter element disclosed by the embodiment of the utility model, the filter material box is arranged in the shell and comprises the upper filter material box cover and the lower filter material box shell, the annular filter screen extending along the circumferential direction of the upper filter material box cover is arranged on one side of the upper filter material box cover, which is far away from the water inlet, the lower filter material box shell is internally used for containing filter materials, the water through holes are arranged on the peripheral wall of the lower filter material box shell, and the communication holes are arranged on the upper filter material box cover, so that leakage of filter materials in the lower filter material box shell is reduced, and the use experience of users is improved.

In some embodiments of the utility model, a first seal ring is provided between the inner peripheral wall of the cartridge upper cover and the outer peripheral wall of the cartridge lower housing.

In some embodiments of the utility model, the peripheral wall of the lower filter cartridge shell is provided with a limiting rib extending along the circumferential direction of the lower filter cartridge shell, and one end of the upper filter cartridge cover, which is away from the water inlet, is supported on the limiting rib.

In some embodiments of the utility model, the inner peripheral wall of the end of the shell far from the water inlet is provided with a plurality of fixing ribs which are spaced along the circumferential direction of the shell, and the filter material box is positioned in a space defined by the plurality of fixing ribs.

In some embodiments of the present utility model, the end of the housing provided with the water outlet is provided with an extending member extending inwards, and a connecting channel is arranged in the extending member and is communicated with the communication port and the water outlet.

In some embodiments of the present utility model, a protrusion is disposed at an end of the upper cover of the filter material box, the end facing the water inlet, the communication port penetrates through the protrusion, and one end of the extension piece is sleeved outside the protrusion.

In some embodiments of the utility model, a second seal ring is provided between the inner peripheral wall of the extension and the outer peripheral wall of the boss.

In some embodiments of the utility model, the filter cartridge further comprises a water stop pad disposed within the housing and between the filter cartridge upper cover and the water inlet; the elastic piece is arranged in the shell and positioned between the upper cover of the filter material box and the water stop pad so as to drive the water stop pad to seal the water inlet.

In some embodiments of the utility model, a side of the filter cartridge upper cover facing the water stop pad has a first positioning structure for limiting movement of the elastic member.

In some embodiments of the present utility model, the first positioning structure is a positioning protrusion provided on the upper cover of the filter cartridge, the positioning protrusion is a plurality of positioning protrusions provided at intervals along the circumferential direction of the upper cover of the filter cartridge or the positioning protrusion extends to be annular along the circumferential direction of the upper cover of the filter cartridge, and one end of the elastic member, which is far away from the water stop pad, is located in a space defined by the positioning protrusion.

In some embodiments of the utility model, a side of the water stop pad facing the filter cartridge upper cover is provided with a second positioning structure for limiting movement of the elastic member.

In some embodiments of the present utility model, the second positioning structure is disposed in a positioning groove on the water stop pad, and an end of the elastic member away from the upper cover of the filter media box is located in the positioning groove.

In some embodiments of the utility model, the elastic member is a spring.

In some embodiments of the utility model, the water stop pad is a silicone rubber member, an ethylene propylene diene rubber member, a nitrile rubber member, a fluororubber member.

A filter cartridge assembly according to an embodiment of the present utility model includes: a socket formed with an inlet and an outlet; the filter element is the filter element, the filter element is detachably connected with the seat, the water inlet is suitable for being communicated with the inlet, and the water outlet is suitable for being communicated with the outlet.

According to the filter element assembly provided by the embodiment of the utility model, the filter element is arranged in the shell, the filter element box comprises the filter element box upper cover and the filter element box lower shell, the annular filter screen extending along the circumferential direction of the filter element box upper cover is arranged on one side of the filter element box upper cover, which is away from the water inlet, the filter element box lower shell is internally used for accommodating filter materials, the water through hole is arranged on the peripheral wall of the filter element box lower shell, and the communication hole is arranged on the filter element box upper cover, so that leakage of the filter materials in the filter element box lower shell is reduced, and the use experience of users is improved.

In some embodiments of the utility model, a valve assembly is disposed within the seat, the valve assembly having an on-state and an off-state; wherein, after the filter element is assembled with the seat, the valve assembly is in the conducting state, the water inlet is communicated with the inlet, and the water outlet is communicated with the outlet; after the filter element is separated from the seat, the valve assembly is in the cut-off state, the water inlet is separated from the inlet, and the water outlet is separated from the outlet.

In some embodiments of the utility model, the valve assembly is switched from the off state to the on state by the cartridge being in contact engagement with the valve assembly when the cartridge is assembled with the seat.

In some embodiments of the utility model, in the on state, the inlet is blocked from the outlet; in the off state, the inlet communicates with the outlet.

The water heater comprises the filter element assembly.

According to the water heater provided by the embodiment of the utility model, the filter element assembly is arranged, the filter element box is arranged in the shell and comprises the filter element box upper cover and the filter element box lower shell, the annular filter screen extending along the circumferential direction of the filter element box upper cover is arranged on one side of the filter element box upper cover, which is away from the water inlet, the filter element box lower shell is internally used for containing filter material, the water through hole is arranged on the peripheral wall of the filter element box lower shell, and the communication hole is arranged on the filter element box upper cover, so that leakage of the filter material in the filter element box lower shell is reduced, and the use experience of a user is improved.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a cross-sectional view of a cartridge according to an embodiment of the present utility model, wherein one end of a carrier rod is connected to a water stop pad;

FIG. 2 is a cross-sectional view of a filter cartridge according to another embodiment of the utility model, wherein one end of a carrier rod is connected to a housing;

FIG. 3 is a perspective view of a cartridge top cover of a filter cartridge according to an embodiment of the utility model;

FIG. 4 is a perspective view of a filter cartridge lower housing of a filter cartridge according to an embodiment of the utility model;

FIG. 5 is a perspective view of a lower housing portion of a cartridge according to an embodiment of the present utility model;

FIG. 6 is a perspective view of an upper housing portion of a cartridge according to an embodiment of the present utility model;

FIG. 7 is a front view of the spring member of the cartridge according to an embodiment of the present utility model;

FIG. 8 is a perspective view of the resilient member of the cartridge according to an embodiment of the present utility model;

FIG. 9 is a bottom view of a water stop pad of a cartridge according to an embodiment of the present utility model;

FIG. 10 is a cross-sectional view of a valve assembly of a filter cartridge assembly according to an embodiment of the present utility model, wherein the valve assembly is in an on state, the first valve spool is in a first position and the second valve spool is in a third position;

FIG. 11 is a cross-sectional view of a valve assembly of a filter cartridge assembly according to an embodiment of the present utility model, wherein the valve assembly is in a closed state, the first valve spool is in the second position and the second valve spool is in the fourth position;

FIG. 12 is an exploded view of a filter cartridge assembly according to an embodiment of the present utility model, showing the seat and filter cartridge prior to assembly;

fig. 13 is a cross-sectional view of a water stop pad of a cartridge according to an embodiment of the present utility model.

Reference numerals:

100. a filter element assembly;

10. a filter element;

1. a housing; 11. a water inlet; 12. a water outlet; 13. fixing ribs; 14. an extension member; 141. a connection channel; 15. a through hole; 16. an upper housing; 17. a lower housing; 18. a sliding rib;

2. a filter material box; 21. a filter material box upper cover; 211. an annular filter screen; 212. a water inlet channel; 213. a communication port; 214. a protrusion; 215. a first positioning structure; 216. a support rib; 22. a filter material box lower shell; 221. a water outlet channel; 222. a water-through port; 223. a limit rib; 23. a first seal ring; 24. a second seal ring; 25. a third seal ring; 26. a fourth seal ring; 27. a fifth seal ring; 28. a sixth seal ring; 29. a stop portion; 291. a circular ring portion; 292. a connection part;

3. a water stop pad; 31. a second positioning structure; 32. a positioning groove;

4. an elastic member; 41. a first positioning section; 42. a second positioning section;

5. a push rod;

6. a one-way valve;

20. a connecting seat; 201. a first mounting cavity; 202. a second mounting cavity; 203. a communication chamber; 204. an inlet; 205. an outlet; 206. a slide rail;

30. A valve assembly; 301. a first stop valve; 3011. a first valve seat; 3012. a first valve core; 302. a second shut-off valve; 3021. a second valve seat; 3022. a second valve core; 303. a first communication passage; 304. and a second communication passage.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

A filter cartridge 10 according to an embodiment of the present utility model is described below with reference to the accompanying drawings.

As shown in fig. 1 and 2, a filter cartridge 10 according to an embodiment of the present utility model includes a housing 1 and a filter cartridge 2.

Specifically, referring to fig. 1 and 2, one end of the housing 1 has a water inlet 11 and a water outlet 12, the filter cartridge 2 is disposed in the housing 1, the filter cartridge 2 includes a filter cartridge upper cover 21 and a filter cartridge lower cover 22, one side of the filter cartridge upper cover 21 facing away from the water inlet 11 has an annular filter screen 211 extending along a circumferential direction of the filter cartridge upper cover 21, one end of the filter cartridge lower cover 22 adjacent to the water inlet 11 extends into the filter cartridge upper cover 21, a water inlet channel 212 is defined by the outer peripheral wall of the filter cartridge upper cover 21 and the housing 1 together in the filter cartridge lower cover 22, a water outlet channel 221 is defined in the filter cartridge lower cover 22, a water through hole 222 for communicating the water inlet channel 212 with the water outlet channel 221 is formed in a peripheral wall of the filter cartridge lower cover 22, and a communication hole 213 for communicating the water outlet channel 221 with the water outlet 12 is formed in the filter cartridge upper cover 21.

It will be appreciated that, as shown in fig. 3 and 4, the filter material in the lower filter material box shell 22 can perform filtering and purifying treatment on the liquid entering the lower filter material box shell 22, the annular filter screen 211 can primarily perform filtering and purifying treatment on the liquid entering the lower filter material box shell 22, so as to improve the purifying effect, and meanwhile, the annular filter screen 211 is arranged on the outer side of the lower filter material box shell 22, so that leakage of the filter material can be reduced.

Further, as shown in fig. 3 and 4, the axial direction of the filter cartridge lower case 22 is the height direction of the filter cartridge lower case 22, and at the height position of a certain filter cartridge lower case 22, the water through holes 222 are a plurality of spaced along the circumferential direction of the filter cartridge lower case 22, each water through hole 222 extends along the circumferential direction of the filter cartridge lower case 22, in addition, the plurality of water through holes 222 are also spaced along the axial direction of the filter cartridge lower case 22, the water through holes 222 are used for liquid to enter or flow out of the filter cartridge lower case 22, and in the axial direction of the filter cartridge lower case 22, adjacent water through holes 222 are spaced apart, so that the filter material can be prevented from leaking out, and therefore, the liquid can enter the filter cartridge lower case 22 from the water inlet channel 212, and the filter material can be reduced from leaking out of the peripheral wall of the filter cartridge lower case 22.

As shown in fig. 3, the communication port 213 has the stopper 29, the stopper 29 includes a circular ring portion 291 and a connecting portion 292, the axis of the circular ring portion 291 and the axis of the communication port 213 are overlapped, the outer peripheral wall of the circular ring portion 291 is spaced apart from the inner peripheral wall of the communication port 213, the circular ring portion 291 has a through hole communicating with the communication port 213, the connecting portion 292 extends from the outer edge of the circular ring portion 291 to the inner wall surface of the communication port 213, the connecting portion 292 is a plurality of the connecting portions 292 arranged at intervals along the circumferential direction of the circular ring portion 291, the connecting portion 292 is used for connecting the circular ring portion 291 and the inner wall of the communication port 213, and the filtered liquid can be prevented from leaking out of the water outlet channel 221 through the gap between the adjacent connecting portions 292 and the through hole of the circular ring portion 291, thereby not only allowing the liquid to flow out of the filter cartridge 2 and out of the water outlet channel 221, but also reducing the leakage of the filter material from the filter cartridge upper cover 21. In the example shown in fig. 3, the number of the connection portions 292 is 4, but the present utility model is not limited thereto, and the number of the connection portions 292 may be more or less, such as 2, 5, 6, 7, or the like.

In addition, the housing 1 includes an upper housing 16 and a lower housing 17, and the water inlet 11 and the water outlet 12 are provided on the upper housing 1, thereby facilitating assembly of the filter cartridge 2. In addition, the third seal ring 25 is provided between the upper case 16 and the lower case 17, so that the outflow of the liquid from the gap between the upper case 16 and the lower case 17 is prevented, and the sealing performance is improved.

The steps of installing the filter element 10 are as follows: the filter material is put into the lower filter material box shell 22, the lower filter material box shell 22 and the upper filter material box cover 21 are connected in a matched mode, and finally the filter material box shell is installed with the shell 1, wherein the lower filter material box shell 22 and the upper filter material box cover 21 can be fixedly connected in a threaded mode or an ultrasonic welding mode and the like.

The flow path of the water flow in the cartridge 10 is: the water flow enters the filter element 10 from the water inlet 11 and flows into the water inlet channel 212, is primarily filtered by the annular filter screen 211 and flows into the filter material box lower shell 22, then enters the filter material box lower shell 22 for filtering by the plurality of water through holes 222, flows into the water outlet channel 221 after being filtered by the filter element 10, flows out of the filter material box 2 through the communication holes 213, flows into the water outlet 12 and finally flows out of the filter element 10.

According to the filter element 10 of the embodiment of the utility model, the filter material box 2 is arranged in the shell 1, the filter material box 2 comprises the upper filter material box cover 21 and the lower filter material box cover 22, the annular filter screen 211 extending along the circumferential direction of the upper filter material box cover 21 is arranged on one side of the upper filter material box cover 21 away from the water inlet 11, the filter material is contained in the lower filter material box cover 22, the water through holes 222 are arranged on the peripheral wall of the lower filter material box cover 22, and the communication holes 213 are arranged on the upper filter material box cover 21, so that leakage of the filter material in the lower filter material box cover 22 is reduced, and the use experience of a user is improved.

In some embodiments of the present utility model, as shown in fig. 1 and 4, a first seal ring 23 is provided between the inner peripheral wall of the cartridge upper cover 21 and the outer peripheral wall of the cartridge lower housing 22. It will be appreciated that the first sealing ring 23 may be in interference fit with the inner peripheral wall of the upper filter cartridge cover 21 and the outer peripheral wall of the lower filter cartridge shell 22, so that the upper filter cartridge cover 21 and the lower filter cartridge shell 22 are reliably connected, thereby improving the sealing performance and further preventing leakage of the filter material. In addition, the peripheral wall of the upper end of the filter material box lower shell 22 is provided with an annular groove, the annular groove is recessed towards the radial inward direction of the filter material box lower shell 22, and the first sealing ring 23 is arranged in the annular groove, so that the first sealing ring 23 is not easy to move relatively to the filter material box lower shell 22, and the fixing effect is improved.

In some embodiments of the utility model, as shown in fig. 1 and 4, the peripheral wall of the lower filter cartridge shell 22 is provided with a limit rib 223 extending along the circumferential direction of the lower filter cartridge shell 22, and the end of the upper filter cartridge cover 21 facing away from the water inlet 11 is supported on the limit rib 223. Therefore, after the filter cartridge lower shell 22 and the filter cartridge upper cover 21 are assembled, the filter cartridge upper cover 21 is prevented from moving downwards relative to the filter cartridge upper cover 21, so that the assembly stability of the filter cartridge lower shell 22 and the filter cartridge upper cover 21 is improved, and meanwhile, the filter material can be further prevented from flowing out from a gap between the filter cartridge lower shell 22 and the filter cartridge upper cover 21.

In some embodiments of the present utility model, as shown in fig. 1 and 5, the inner peripheral wall of the end of the housing 1 remote from the water inlet 11 is provided with a plurality of fixing ribs 13, the fixing ribs 13 being spaced apart in the circumferential direction of the housing 1, and the filter cartridge 2 being located in a space defined by the plurality of fixing ribs 13.

It can be understood that the one end of fixed muscle 13 is connected with the inner peripheral wall of the one end of keeping away from water inlet 11 of casing 1, the other end is along the radial direction inwards extension of casing 1, fixed muscle 13 can be followed the circumference direction of filter media cartridge 2 and is fixed a position filter media cartridge 2, avoid filter media cartridge 2 to take place to remove in casing 1, the fixed effect of filter media cartridge 2 has been improved, thereby further prevent that the filter media from spilling, the axis coincidence of guarantee filter media cartridge 2 and casing 1 simultaneously, can ensure delivery port 12 and water outlet channel 221 relatively, avoid the liquid in water outlet channel 221 and the water inlet channel 212 to mix, ensure the filter effect of filter media cartridge 10, improve user's use experience.

For example, in the example shown in fig. 5, the fixing ribs 13 are 6 fixing ribs spaced along the circumferential direction of the housing 1, and the 6 fixing ribs 13 are uniformly spaced, so that the fixing ribs can play a role in positioning from 6 positions in the circumferential direction of the filter cartridge 2, and prevent the filter cartridge 2 from moving in the housing 1. The present utility model is not limited thereto and the fixing ribs 13 may be more or less, such as 2, 3, 4, 5, 7, or the like, spaced apart in the circumferential direction of the housing 1.

In some embodiments of the present utility model, as shown in fig. 1 and 6, the end of the housing 1 provided with the water outlet 12 has an extension member 14 extending inward, and the extension member 14 has a connection channel 141 therein, and the connection channel 141 communicates with the communication port 213 and the water outlet 12. The connection channel 141 can enable the filtered liquid to flow from the water outlet channel 221 to the water outlet 12, so that the space from the water outlet channel 221 to the water outlet 12 and the space from the water inlet 11 to the water inlet channel 212 can be separated, the filtered liquid and the liquid before filtration are prevented from being mixed, and the filtering effect of the filter element 10 is ensured.

Further, the one-way valve 6 is disposed in the connection channel 141 to only allow the liquid to flow from the water outlet channel 221 to the water outlet 12, so as to avoid the liquid from flowing back or flowing into the filter element 10 from the water outlet 12, avoid affecting the flowing out of the filtered liquid, and ensure the filtering effect of the filter element 10. It should be noted that, the one-way valve 6 is a device that cannot be opened by water in the reverse direction and needs a certain water inlet pressure in the forward direction, and the normal water inlet pressure is generally set to be greater than the pressure +0.05Mpa (relative pressure) of the water pressure acting on the water inlet position of the one-way valve 6 after the filter element 10 is filled with water, the former is the pressure that overcomes the self weight of the water stored in the filter element 10 and acts on the one-way valve 6, and the 0.05Mpa is the pressure that overcomes the atmospheric pressure. Wherein, there is the fourth sealing ring 26 between the outer peripheral wall of the check valve 6 and the inner peripheral wall of the connection passage 141, so that the liquid can be prevented from flowing between the outer peripheral wall of the check valve 6 and the inner peripheral wall of the connection passage 141, thereby improving the sealability.

The flow path of the water flow in the cartridge 10 is: the water flow enters the filter element 10 from the water inlet 11 and flows into the water inlet channel 212, after being filtered by the filter element 10, flows into the water outlet channel 221 and then flows into the connecting channel 141, and if the water inlet pressure is enough, the one-way valve 6 is opened through the control of the one-way valve 6, and the water flow flows into the water outlet 12 through the one-way valve 6 and flows out of the filter element 10.

In some embodiments of the present utility model, as shown in fig. 1 and 3, the end of the upper cover 21 of the filter cartridge facing the water inlet 11 has a protrusion 214, the communication opening 213 penetrates the protrusion 214, and one end of the extension member 14 is sleeved outside the protrusion 214. It can be appreciated that through the cooperation of extension piece 14 and protruding 214 for filter cartridge upper cover 21 and casing 1 are connected reliably, have improved the fixed effect of filter cartridge 2, thereby further prevent that the filter material from spilling, also can make the axis coincidence of filter cartridge 2 and casing 1 simultaneously, can ensure delivery port 12 and water outlet channel 221 relatively, avoid the liquid mixing in water outlet channel 221 and the water inlet channel 212, ensure the filter effect of filter core 10, improve user's use experience.

In some embodiments of the present utility model, as shown in fig. 2 and 3, a second seal 24 is provided between the inner peripheral wall of the extension 14 and the outer peripheral wall of the boss 214. It can be appreciated that the second sealing ring 24 can be in interference fit with the inner peripheral wall of the extension member 14 and the outer peripheral wall of the protrusion 214, so that the space from the water outlet channel 221 to the water outlet 12 and the space from the water inlet 11 to the water inlet channel 212 can be separated, the filtered liquid and the liquid before filtration can be prevented from being mixed, and the filtering effect of the filter element 10 can be ensured.

In some embodiments of the present utility model, as shown in fig. 1 and 2, the filter cartridge 10 further includes a water stop pad 3 and an elastic member 4, the water stop pad 3 is disposed in the housing 1 and located between the filter cartridge upper cover 21 and the water inlet 11, and the elastic member 4 is disposed in the housing 1 and located between the filter cartridge upper cover 21 and the water stop pad 3 to drive the water stop pad 3 to block the water inlet 11.

It will be appreciated that the upper end of the cartridge 10 has a socket 20, the socket 20 being adapted to be removably connected to the cartridge 10, the socket 20 being adapted to mount the cartridge 10, for example, the socket 20 may be provided on a water appliance such as a water heater, and the cartridge 10 may be connected to the water heater via the socket 20 for filtering water flowing into or from the water heater. After the assembly of the filter element 10 is completed, the elastic piece 4 can deform to a certain extent, the elastic piece 4 can act on the water stop pad 3 due to the elasticity generated by self deformation, and the water stop pad 3 is driven to move towards the direction close to the water inlet 11, so that the water stop pad 3 is pressed at the water inlet 11 after deforming, the tightness of the filter element 10 is ensured, the residual water inside the filter element 10 is prevented from leaking from the water inlet 11, the use experience of a user can be improved, the residual water is prevented from wetting the clothes and the ground of the user, and the potential safety hazard and the labor capacity of the user are reduced.

Further, as shown in fig. 1 and 2, the water stop pad 3 is provided with a push rod 5 extending along the axial direction of the casing 1, the push rod 5 is detachably connected with the water stop pad 3, the casing 1 is provided with a through hole 15, the push rod 5 is arranged in the through hole 15 in a penetrating way, one end of the push rod 5 is connected with one of the seat 20 and the water stop pad 3, the other end is suitable for being abutted against the other one of the seat 20 and the water stop pad 3, when the seat 20 is installed with the filter element 10, the seat 20 moves towards the filter element 10 relative to the filter element 10, and the push rod 5 drives the water stop pad 3 to be spaced from the water inlet 11 so as to open the water inlet 11.

One end of the ejector rod 5 is fixedly connected with the seat 20, the other end is suitable for stopping the water stopping pad 3, when the filter element 10 is matched with the seat 20, the seat 20 moves towards the filter element 10 relative to the filter element 10, the ejector rod 5 stretches into the through hole 15 and stops against the water stopping pad 3, in the process that the seat 20 moves towards the filter element 10, the ejector rod 5 also moves towards the filter element 10, so that the ejector rod 5 pushes the water stopping pad 3 to move towards the filter material box 1 against the elastic force of the elastic piece 4, the water stopping pad 3 and the water inlet 11 are further spaced in the axial direction of the water inlet 11, the water stopping pad 3 does not seal the water inlet 11, the water inlet 11 is opened, so that the water inlet 11 and the inlet 204 are in a communicating state, water entering the inlet 204 can enter the filter element 10 through the water inlet 11 for filtering, and flows out of the outlet 205 through the water outlet 12 after the filtering treatment of the filter material box 2.

When the filter element 10 and the seat 20 are released, the seat 20 moves towards the direction away from the filter element 10, the ejector rod 5 moves towards the direction away from the filter element 10, the pressure of the ejector rod 5 acting on the water stop pad 3 gradually decreases until the pressure disappears, as shown in fig. 5, under the action of the elastic piece 4, the elastic piece 4 drives the water stop pad 3 to move towards the direction close to the water inlet 11 so that the water stop pad 3 is pressed at the water inlet 11 to seal the water inlet 11, and therefore liquid flowing in from the inlet 204 is blocked outside the water inlet 11, and the water sealing effect is achieved.

As shown in fig. 1, one end of the ejector rod 5 is fixedly connected with the water stop pad 3, the other end of the ejector rod 5 is suitable for sliding and stopping with the seat 20, and the cross section shape and size of the through hole 15 are the same as those of the ejector rod 5. During the process of installing the seat 20 and the shell 1, the seat 20 rotates relative to the shell 1 and moves towards the filter element 10, the seat 20 pushes the ejector rod 5 to move towards the filter element 10 during the process of moving towards the filter element 10, so that the ejector rod 5 drives the water stop pad 3 to be spaced from the water inlet 11 to open the water inlet 11, and the seat 20 rotates relative to the shell 1, so that the ejector rod 5 and the seat 20 are in relative sliding stop. In this embodiment, since there is no relative rotation between the ejector pin 5 and the housing 1, the ejector pin 5 may not rotate, thereby improving the connection stability between the ejector pin 5 and the housing 1.

Further, the cross section shape and the size of the through hole 15 are the same as those of the ejector rod 5, so that the situation that unreliable water leakage is blocked when the through hole 15 is large is avoided, the sealing performance is better, the radial movement of the ejector rod 5 relative to the through hole 15 can be reduced, and the movement of the ejector rod 5 is more stable. Alternatively, the ejector pin 5 is detachably connected with the water stop pad 3, thereby facilitating replacement of the ejector pin 5 and the water stop pad 3 and improving durability of the structure.

As shown in fig. 2, one end of the ejector rod 5 is fixedly connected with the seat 20, the other end of the ejector rod 5 is suitable for sliding and abutting against the water stop pad 3, and the through hole 15 extends along the circumferential direction of the casing 1. In the process of mounting the seat 20 and the shell 1, the seat 20 rotates relative to the shell 1 and moves towards the filter element 10, in the process of moving towards the filter element 10, the seat 20 is connected with the seat 20, so that the ejector rod 5 is driven to move towards the filter element 10, the ejector rod 5 drives the water stop pad 3 to be spaced from the water inlet 11 to open the water inlet 11, the ejector rod 5 also rotates relative to the shell 1 due to the fact that the seat 20 rotates relative to the shell 1, and the through hole 15 extends along the circumferential direction of the shell 1, so that the ejector rod 5 is not blocked when rotating relative to the shell 1, and assembly efficiency is improved.

Preferably, the ejector rod 5 and the seat 20 are integrated, so that the ejector rod 5 is not required to be arranged on the water stop pad 3, the integration is good, the installation step is simplified, and the structure is simpler.

Alternatively, the water inlet 11 is the same hole as the through hole 15, and the area of the through hole 15 except the ejector pin 5 is used for the flow of water.

The ejector rods 5 are a plurality of spaced-apart ejector rods, and the through holes 15 are a plurality of the ejector rods 5 in one-to-one correspondence. The plurality of ejector rods 5 enable the ejector rods 5 to drive the water stop pad 3 to move more reliably, and the positioning effect of the water stop pad 3 when the water inlet 11 is opened is improved. For example, in the example shown in fig. 2, the number of the jack 5 is two, but the present utility model is not limited thereto, and the number of the jack 5 may be more, such as 3, 4, 5, or 6. Meanwhile, the number of the through holes 15 is also correspondingly large, so that radial movement of the ejector rod 5 relative to the through holes 15 is further reduced, and the movement of the ejector rod 5 is more stable.

Further, as shown in fig. 1 and 2, the water inlets 11 are a plurality of water inlets spaced apart along the circumferential direction of the housing 1, thereby increasing water inflow and efficiency, the water outlets 12 are arranged at the central position of the housing 1, so that water is concentrated, the structure is simple, the water stop pad 3 is annular extending along the circumferential direction of the housing 1, it is understood that the water inlets 11 are a plurality of water inlets spaced apart along the circumferential direction of the housing 1, the water stop pad 3 is annular extending along the circumferential direction of the housing 1, so that the water stop pad 3 can simultaneously block all the water inlets 11, the blocking effect is improved, the sealing performance is improved, the structure of the water stop pad 3 is simplified, in addition, the water stop pad 3 is annular, the hollow position of the water stop pad can avoid the arrangement of the water outlets 12, and the structure is reasonable.

For example, in the example shown in fig. 1 and 2, the water inlets 11 are two spaced apart in the circumferential direction of the housing 1, but the present utility model is not limited thereto, and the water inlets 11 may be more spaced apart in the circumferential direction of the housing 1, such as 3, 4, 5, 6, or the like.

Wherein, when stagnant water fills up 3 for annular, and when the one end of ejector pin 5 and seat 20 fixed connection, a plurality of ejector pins 5 are evenly spaced apart along the circumferencial direction of seat 20 to make the driving force of exerting on stagnant water fills up 3 more even along the circumferencial direction of stagnant water fills up 3, when the one end of ejector pin 5 is connected with stagnant water fills up 3, a plurality of ejector pins 5 evenly spaced apart along the circumferencial direction of stagnant water fills up 3, thereby make the driving force of exerting on stagnant water fills up 3 more even along the circumferencial direction of stagnant water fills up 3, thereby increase the reliability of stagnant water fills up 3 work.

In some embodiments of the present utility model, as shown in fig. 3, a side of the upper cover 21 of the filter cartridge facing the water stop pad 3 has a first positioning structure 215 for limiting the movement of the elastic member 4, so that the elastic member 4 can be fixed on the upper cover 21 of the filter cartridge, and the elastic member 4 can drive the water stop pad 3 to move, so that the reliability of sealing the water inlet 11 by the water stop pad 3 is ensured.

In some embodiments of the present utility model, as shown in fig. 3, the first positioning structure 215 is a positioning protrusion provided on the upper cover 21 of the filter cartridge, the positioning protrusion is a plurality of or positioning protrusions arranged at intervals along the circumferential direction of the upper cover 21 of the filter cartridge, the positioning protrusion extends in a ring shape along the circumferential direction of the upper cover 21 of the filter cartridge, and one end of the elastic member 4 away from the water stop pad 3 is located in a space defined by the positioning protrusion. The positioning protrusion can play a limiting role on the elastic piece 4, so that the elastic piece 4 is prevented from moving in the radial direction, the structural stability is improved, and the reliability of the water inlet 11 of the water stop pad 3 is guaranteed.

In the example shown in fig. 3, the positioning projections are 4, 4 positioning projections spaced apart in the circumferential direction of the housing 1 are uniformly spaced apart, but the present utility model is not limited thereto, and the positioning projections may be more or less, such as 3, 5, 6, 7, or the like, while the positioning projections may also be annular extending in the circumferential direction of the filter cartridge upper cover 21.

It can be understood that the one end of the elastic piece 4, which is far away from the water inlet 11, is provided with a first positioning section 41, the shape and the size of the outer contour of the first positioning section 41 are unchanged along the axial direction of the shell 1, the first positioning section 41 is positioned in the space defined by the positioning bulge, the outer contour of the first positioning section 41 is attached to the inner wall of the positioning bulge, the contact area of the elastic piece 4 and the positioning bulge can be increased, the limiting effect of the positioning bulge on the elastic piece 4 is enhanced, and the structural stability is improved.

Further, along the axial direction of the housing 1, the height of the first positioning section 41 is H1, the height of the positioning protrusion is H2, and the following is satisfied: h2 > H1, can guarantee sufficient blocking height, prevent that first location section 41 from deviate from in the space that the location arch limited, further ensure elastic component 4 and the protruding complex reliability of location to guarantee the stability of water inlet 11 is sealed to water stop pad 3.

In addition, support ribs 216 are arranged on the end face, facing the water inlet 11, of the filter material box 2, the support ribs 216 are located in the space defined by the positioning protrusions and are eight spaced apart along the circumferential direction of the filter material box 2, each support rib 216 extends along the radial direction of the filter material box 2, one end, facing away from the water inlet 11, of the elastic piece 4 is provided with a first positioning section 41, the shape and the size of the outer contour of the first positioning section 41 are unchanged along the axial direction of the shell 1, the first positioning section 41 is located in the space defined by the positioning protrusions and the support ribs 216, the outer contour of the first positioning section 41 is attached to the inner wall of the positioning protrusions, the contact area of the elastic piece 4 and the positioning protrusions can be increased, the limiting effect of the positioning protrusions on the elastic piece 4 is enhanced, and the structural stability is improved.

Further, along the axial direction of the housing 1, the height of the first positioning section 41 is H1, the height of the positioning protrusion is H2, the height of the supporting rib 216 is H5, and the following conditions are satisfied: H2-H5 > H1, can guarantee sufficient blocking height when supporting elastic piece 4, prevent that first location section 41 from deviating from in the space that location arch and supporting rib 216 limited to guarantee the stability that water inlet 11 was sealed to water-stop pad 3.

In some embodiments of the present utility model, as shown in fig. 9, a second positioning structure 31 for limiting the movement of the elastic member 4 is provided on a side of the water stop pad 3 facing the upper cover 21 of the filter cartridge, thereby limiting the movement of the elastic member 4 relative to the water stop pad 3, so that the elastic member 4 can drive the water stop pad 3 to move.

In addition, the outer contour dimension of the end, close to the filter material box 2, of the elastic piece 4 is larger than the outer contour dimension of the end, close to the water stop pad 3, of the elastic piece 4, so that the stability of the elastic piece 4 can be improved, and the fact that the axis of the end, close to the filter material box 2, of the elastic piece 4 is inconsistent with the axis of the end, close to the water stop pad 3, is avoided.

In some embodiments of the present utility model, as shown in fig. 9, the second positioning structure 31 is a positioning groove 32 provided on the water stop pad 3, and an end of the elastic member 4 away from the upper cover 21 of the filter cartridge is located in the positioning groove 32. It can be appreciated that the positioning groove 32 extends into a ring shape along the circumferential direction of the water stop pad 3, one end, far away from the filter material box 2, of the elastic piece 4 is located in the positioning groove 32, the positioning groove 32 can limit one end, far away from the filter material box 2, of the elastic piece 4, the elastic piece 4 is prevented from moving in the radial direction, the structural stability is improved, and accordingly the reliability of the water stop pad 3 for blocking the water inlet 11 is guaranteed.

Further, as shown in fig. 7, one end of the elastic member 4 far away from the filter material box 2 is provided with a second positioning section 42, the shape and the size of the outer contour of the second positioning section 42 are unchanged along the axial direction of the shell 1, the second positioning section 42 is positioned in the positioning groove 32, the outer contour of the second positioning section 42 is attached to the inner wall of the positioning groove 32, the contact area between the elastic member 4 and the positioning groove 32 can be increased, the limiting effect of the positioning groove 32 on the elastic member 4 is enhanced, and the structural stability is improved.

As shown in fig. 7 and 13, the height of the second positioning section 42 is H3, the depth of the positioning groove 32 is H4, and the following is satisfied: h4 > H3, can guarantee sufficient blocking depth, prevent that second location section 42 from deviating from in the constant head tank 32, further ensure elastic component 4 and constant head tank 32 complex reliability to guarantee the stability of water inlet 11 is sealed to water stop pad 3.

In addition, as shown in fig. 8, at least one of the two end surfaces of the elastic member 4 is a plane along the axial direction of the casing 1, so that the contact area between the elastic member 4 and the water stop pad 3 and/or the filter material box 2 can be increased, radial deflection of the elastic member 4 is further avoided, radial movement of the water stop pad 3 is prevented, and the reliability of the water stop pad 3 for blocking the water inlet 11 is ensured.

One end, which is close to the filter material box 2, of the elastic piece 4 is a plane, so that the contact area between the first positioning section 41 and the supporting rib 216 can be increased, and the elastic piece 4 is further prevented from being radially deflected; or one end of the elastic piece 4 far away from the filter material box 2 is a plane, so that the contact area between the second positioning section 42 and the positioning groove 32 can be increased, and the elastic piece 4 is further prevented from being radially deflected; the two ends of the elastic member 4 in the axial direction may be flat, so that the contact area between the first positioning section 41 and the supporting rib 216 and the contact area between the second positioning section 42 and the positioning groove 32 can be increased, and further, the elastic member 4 is prevented from being radially deflected.

In some embodiments of the present utility model, as shown in fig. 8 and 9, the elastic member 4 is a spring, which is light in weight and low in cost, and can reduce the production cost and weight of the filter cartridge 10.

In some embodiments of the utility model, the water stop pad 3 is a silicone rubber piece, an ethylene propylene diene monomer rubber piece, a nitrile rubber piece or a fluororubber piece, has certain elasticity, can ensure the stability of the water stop pad 3 matched with the elastic piece 4, and improves the reliability of the water stop pad 3 for blocking the water inlet 11.

A filter cartridge assembly 100 according to an embodiment of the present utility model is described below with reference to the accompanying drawings.

As shown in fig. 10 and 11, a cartridge assembly 100 according to an embodiment of the present utility model includes a receptacle 20 and the cartridge 10 described above.

Specifically, referring to fig. 10 and 11, the seat 20 is formed with an inlet 204 and an outlet 205, the cartridge 10 is detachably connected to the seat 20, the water inlet 11 is adapted to communicate with the inlet 204, and the water outlet 12 is adapted to communicate with the outlet 205.

It will be appreciated that, as shown in fig. 12, the filter element 10 is detachably connected with the seat 20, the filter element 10 is rotationally clamped with the seat 20, thereby improving the assembly portability and the assembly efficiency of the seat 20 and the housing 1, simultaneously improving the connection reliability between the seat 20 and the housing 1, and ensuring that the seat 20 and the housing 1 are rotationally clamped in the process, the seat 20 moves towards the filter element 10, so that the ejector rod 5 moves towards the filter element 10 along with the seat 20, and is abutted against the water stop pad 3, after the seat 20 and the filter element 10 are installed, the water inlet 11 is opened, the inlet 204 is communicated with the water inlet 11, and water entering from the inlet 204 can enter the filter element 10 through the water inlet 11 for filtering.

The inner peripheral wall of the seat 20 is provided with a sliding rail 206 protruding out of the inner peripheral wall of the seat 20, the sliding rail 206 is spaced apart from the inner bottom wall of the seat 20 to define an accommodating space, the outer peripheral wall of the shell 1 is provided with a sliding rib 18 protruding out of the outer peripheral wall of the shell 1, the sliding rib 18 is suitable for being positioned in the accommodating space, and the surface, facing away from the inner bottom wall of the seat 20, of the sliding rib 18 is inclined towards a direction away from the inner bottom wall of the seat 20 along the rotation direction when the seat 20 is installed. During the installation of the seat 20 and the shell 1, the seat 20 and the shell 1 are aligned, that is, one end of the sliding rib 18 is aligned with the opening of the accommodating space, then the seat 20 is rotated, during the rotation of the seat 20, the sliding rib 18 is gradually scratched into the accommodating space, and along the rotation direction during the installation of the seat 20, as the surface of the sliding rib 18, which is away from the inner bottom wall of the seat 20, is inclined towards the direction away from the inner bottom wall of the seat 20, during the rotation of the seat 20 relative to the shell 1, the seat 20 gradually moves towards the filter element 10, so that the ejector rod 5 moves towards the filter element 10 along with the seat and is stopped against the water stop pad 3, after the installation of the seat 20 and the filter element 10 is completed, the water inlet 11 is ensured to be opened, the inlet 204 can be communicated with the water inlet 11, and water entering from the inlet 204 can enter the filter element 10 through the water inlet 11 for filtering.

In addition, as shown in fig. 1 and 2, a fifth sealing ring 27 is provided between the outer circumferential wall of the cartridge 10 and the inner circumferential wall of the seat 20, so that it is possible to prevent liquid from flowing out from between the outer circumferential wall of the cartridge 10 and the inner circumferential wall of the seat 20, wherein one end of the housing 1 extends in a direction close to the seat 20, and a sixth sealing ring 28 is provided between the outer circumferential wall of the end of the housing 1 extending in a direction close to the seat 20 and the inner circumferential wall of the seat 20, so that it is possible to prevent liquid from flowing through a gap between the outer circumferential wall of the end of the housing 1 extending in a direction close to the seat 20 and the inner circumferential wall of the seat 20, so that it is possible to prevent liquid from flowing from the inlet 204 to the outlet 205 without being filtered by the cartridge 10, and the filtering effect is improved.

According to the filter element assembly 100 of the embodiment of the utility model, by arranging the filter element 10, the filter element box 2 is arranged in the shell 1, the filter element box 2 comprises the filter element box upper cover 21 and the filter element box lower cover 22, the annular filter screen 211 extending along the circumferential direction of the filter element box upper cover 21 is arranged on one side of the filter element box upper cover 21, which is far away from the water inlet 11, the filter element box lower cover 22 is used for accommodating filter materials, the water through hole 222 is arranged on the peripheral wall of the filter element box lower cover 22, and the communication hole 213 is arranged on the filter element box upper cover 21, so that leakage of the filter materials in the filter element box lower cover 22 is reduced, and the use experience of users is improved.

In some embodiments of the present utility model, as shown in fig. 10 and 11, a valve assembly 30 is provided within the seat 20, the valve assembly 30 having an on state and an off state. After the filter element 10 is assembled with the seat 20, the valve assembly 30 is in a conducting state, the water inlet 11 is communicated with the inlet 204, the water outlet 12 is communicated with the outlet 205, and thus, when the valve assembly 30 is in a conducting state, the phenomenon that water flows into the seat 20 through the inlet 204 and then directly flows out of the seat 20 through the outlet 205 can be avoided, the water flows out of the outlet 205 of the seat 20 are all water flows through the filter element 10, and the filtering effect of the filter element assembly 100 on the water flows is ensured.

After the filter cartridge 10 is separated from the seat 20, the valve assembly 30 is in a closed state, the water inlet 11 is blocked from the inlet 204, and the water outlet 12 is blocked from the outlet 205. The water flow can flow into the seat through the inlet 204 and then directly flow out through the outlet 205, so that the normal flow of the water flow in the waterway connected with the seat 20 can be ensured when the filter element 10 is detached.

It will be appreciated that if the filter element 10 needs to be replaced, the water valve in the home needs to be closed first, but the valve assembly 30 in the seat 20 is controlled to be in a cut-off state, so that the water inlet 11, the inlet 204, the water outlet 12 and the outlet 205 can be controlled to cut off, thereby preventing water flow in the filter element assembly 100 from being blocked, preventing water leakage when the filter element 10 is detached, and further realizing that the filter element 10 can be replaced without closing the water valve.

In some embodiments of the present utility model, as shown in fig. 10 and 11, when the cartridge 10 is assembled with the seat 20, the valve assembly 30 is switched from the off state to the on state by the cartridge 10 being in contact engagement with the valve assembly 30. It will be appreciated that upon completion of installation of cartridge 10, cartridge 10 is in contact engagement with valve assembly 30, thereby causing valve assembly 30 to switch from the off state to the on state so that water may flow to cartridge 10 for filtration. When the cartridge 10 is removed, the cartridge 10 is spaced apart from the valve assembly 30 such that the valve assembly 30 is switched from an on state to an off state, thereby preventing water leakage when the cartridge 10 is removed. Thereby, the valve assembly 30 is automatically switched on and off without manual manipulation, and the installation step is simplified.

In some embodiments of the present utility model, as shown in fig. 10 and 11, in the on state, the inlet 204 is blocked from the outlet 205, thereby preventing water mixing of the inlet 204 and the outlet 205, reducing the filtering effect, and in the off state, the inlet 204 is communicated with the outlet 205, thereby preventing water from the inlet 204 from flowing to the cartridge 10, so that water flow can directly flow from the inlet 204 to the outlet 205, and preventing structural damage caused by excessive water pressure.

Further, a first installation cavity 201, a second installation cavity 202 and a communication cavity 203 are formed in the seat 20, the first installation cavity 201 and the second installation cavity 202 are separated from each other, the valve assembly 30 comprises a first stop valve 301 and a second stop valve 302, the first stop valve 301 is arranged in the first installation cavity 201, the first stop valve 301 comprises a first valve seat 3011 and a first valve core 3012, a first communication channel 303 communicated with the inlet 204 is formed in the first valve seat 3011, the first valve core 3012 is movably arranged in the first communication channel 303 between a first position and a second position, and the first valve core 3012 of the first stop valve 301 can be used for controlling communication and blocking between the inlet 204 and the water inlet 11. When the first valve element 3012 is in the first position, the water path between the inlet 204 and the water inlet 11 is communicated, and water flow can enter the first communication channel 303 through the inlet 204, flow through the first communication channel 303, and then flow into the filter element 10 through the water inlet 11. When the first spool 3012 is in the second position, the water path between the inlet 204 and the water inlet 11 is blocked, and the inlet 204 communicates with the communication chamber 203.

The second mounting chamber 202 is provided with a second shut-off valve 302 therein, the second shut-off valve 302 includes a second valve seat 3021 and a second valve spool 3022, a second communication passage 304 communicating with the outlet 205 is formed in the second valve seat 3021, and the second valve spool 3022 is movably provided in the second communication passage 304 between a third position and a fourth position. The second spool 3022 of the second shut-off valve 302 may be used to control the communication and blocking of the outlet port 205 with the water outlet port 12. When the second valve core 3022 is in the third position, the outlet 205 is in waterway communication with the water outlet 12, and water in the filter cartridge 10 can flow into the second communication passage 304 through the water outlet 12, flow through the second communication passage 304, and then flow out of the seat 20 through the outlet 205. When the second valve core 3022 is in the fourth position, the water passage between the outlet 205 and the water outlet 12 is blocked, and the inlet 204 communicates with the communication chamber 203.

When the valve assembly 30 is in the conducting state, the first valve core 3012 is in the first position, the second valve core 3022 is in the third position, the first communication channel 303 is communicated with the inlet 204 and the water inlet 11, the second communication channel 304 is communicated with the outlet 205 and the water outlet 12, and the first communication channel 303 and the second communication channel 304 are all blocked from the communication cavity 203, so that water can enter the filter core 10 from the inlet 204 through the first communication channel 303, enter the water inlet 11, flow from the water outlet 12 to the second communication channel 304, and flow out from the outlet 205, and water filtration is realized.

When the valve assembly 30 is in the shut-off state, the first spool 3012 is in the second position and the second spool 3022 is in the fourth position, the first communication passage 303 is blocked from the water inlet port 11, the second communication passage 304 is blocked from the water outlet port 12, and the first communication passage 303 and the second communication passage 304 communicate through the communication chamber 203. Thus, water can directly flow from the inlet 204 to the outlet 205 through the first communication passage 303 and the second communication passage 304, thereby preventing structural damage caused by excessive water pressure.

Further, the first shut-off valve 301 may include a first spring 305, one end of the first spring 305 being connected to the first spool 3012, and the other end of the first spring 305 being connected to the first valve seat 3011. After the filter element is separated from the seat, the first spring 305 can switch the first valve element 3012 from the first position to the second position through the elastic action of the first valve element 3012; after the filter element is assembled with the seat, the filter element is in contact fit with the first valve element 3012, so that the first valve element 3012 is switched from the second position to the first position against the elastic force of the first spring 305.

The second shut-off valve 302 may include a second spring 306, one end of the second spring 306 being connected to a second valve spool 3022, and the other end of the second spring 306 being connected to a second valve seat 3021. After the filter element is separated from the seat, the second spring 306 can switch the second valve core 3022 from the third position to the fourth position through the elastic action of the second valve core 3022; after the filter element is assembled with the seat, the filter element is in contact fit with the second valve element 3022, so that the second valve element 3022 is switched from the fourth position to the third position against the elastic force of the second spring 306.

A water heater according to an embodiment of the present utility model is described below.

A water heater according to an embodiment of the present utility model includes the cartridge assembly 100 described above. It will be appreciated that the filter element assembly 100 may be placed inside or outside the water heater, the filter element 10 is mounted on the seat 20, tap water flows into the water inlet channel 212 through the inlet 204 via the water inlet 11, after entering the filter material box 2 and being filtered, flows from the water outlet channel 221 to the water outlet 12 via the connecting channel 141, and finally flows out of the filter element 10 from the outlet 205 to enter the water heater for heating treatment.

According to the water heater provided by the embodiment of the utility model, the filter element assembly 100 is arranged, the filter element 10 is arranged, the filter material box 2 is arranged in the shell 1, the filter material box 2 comprises the upper filter material box cover 21 and the lower filter material box cover 22, the annular filter screen 211 extending along the circumferential direction of the upper filter material box cover 21 is arranged on one side of the upper filter material box cover 21, which is far away from the water inlet 11, the lower filter material box cover 22 is used for accommodating filter materials, the water through hole 222 is arranged on the circumferential wall of the lower filter material box cover 22, and the communication hole 213 is arranged on the upper filter material box cover 21, so that leakage of filter materials in the lower filter material box cover 22 is reduced, and the use experience of users is improved.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (19)

1. A filter cartridge, comprising:

the shell is provided with a water inlet and a water outlet at one end;

the filter material box, the filter material box is located in the casing, the filter material box includes filter material box upper cover and filter material box inferior valve, one side of filter material box upper cover deviates from the water inlet has the edge the annular filter screen that the circumferencial direction of filter material box upper cover extends, the one end that is close to of filter material box inferior valve the water inlet stretches into in the filter material box upper cover, be used for holding the filter material in the filter material box inferior valve, the periphery wall of filter material box upper cover with the casing defines the inlet channel jointly, the outlet channel is injectd in the filter material box inferior valve, be used for the intercommunication on the periphery wall of filter material box inferior valve inlet channel with the mouth of a river of outlet channel, the filter material box upper cover has the intercommunication mouth that is used for the intercommunication outlet channel with the delivery port.

2. The filter cartridge of claim 1, wherein a first seal ring is disposed between an inner peripheral wall of the cartridge upper cover and an outer peripheral wall of the cartridge lower housing.

3. The filter cartridge of claim 1, wherein the peripheral wall of the filter cartridge lower housing has a spacing rib extending in a circumferential direction of the filter cartridge lower housing, and an end of the filter cartridge upper cover facing away from the water inlet is supported on the spacing rib.

4. The filter cartridge of claim 1, wherein the inner peripheral wall of the end of the housing remote from the water inlet has a plurality of fixing ribs spaced apart in a circumferential direction of the housing, the filter cartridge being located in a space defined by the plurality of fixing ribs.

5. The filter cartridge of claim 1, wherein the end of the housing having the water outlet has an inwardly extending extension member having a connecting passage therein, the connecting passage communicating with the communication port and the water outlet.

6. The filter cartridge of claim 5, wherein the filter cartridge upper cover has a protrusion at an end thereof facing the water inlet, the communication port extends through the protrusion, and one end of the extension member is sleeved outside the protrusion.

7. The cartridge of claim 6, wherein a second seal ring is disposed between the inner peripheral wall of the extension member and the raised outer peripheral wall.

8. The filter cartridge of claim 1, further comprising:

the water stop pad is arranged in the shell and is positioned between the upper cover of the filter material box and the water inlet;

the elastic piece is arranged in the shell and positioned between the upper cover of the filter material box and the water stop pad so as to drive the water stop pad to seal the water inlet.

9. The filter cartridge of claim 8, wherein a side of the cartridge upper cover facing the water stop pad has a first positioning structure for limiting movement of the resilient member.

10. The filter cartridge of claim 9, wherein the first positioning structure is a positioning protrusion provided on the filter cartridge upper cover, the positioning protrusion is a plurality of positioning protrusions provided at intervals along a circumferential direction of the filter cartridge upper cover or the positioning protrusion extends in a ring shape along the circumferential direction of the filter cartridge upper cover, and one end of the elastic member, which is far away from the water stop pad, is located in a space defined by the positioning protrusion.

11. The filter cartridge of claim 8, wherein a side of the water stop pad facing the cartridge upper cover is provided with a second locating feature for limiting movement of the resilient member.

12. The filter cartridge of claim 11, wherein the second positioning structure is disposed in a positioning groove in the water stop pad, and an end of the elastic member remote from the cartridge top cover is disposed in the positioning groove.

13. The cartridge of claim 8, wherein the resilient member is a spring.

14. The filter cartridge of claim 8, wherein the water stop pad is a silicone rubber member, an ethylene propylene diene rubber member, a nitrile rubber member, a fluororubber member.

15. A filter cartridge assembly, comprising:

a socket formed with an inlet and an outlet;

a filter cartridge according to any one of claims 1 to 14, detachably connected to the seat, the water inlet being adapted to communicate with the inlet and the water outlet being adapted to communicate with the outlet.

16. The filter cartridge assembly of claim 15, wherein a valve assembly is disposed within the seat, the valve assembly having an on-state and an off-state;

Wherein, after the filter element is assembled with the seat, the valve assembly is in the conducting state, the water inlet is communicated with the inlet, and the water outlet is communicated with the outlet;

after the filter element is separated from the seat, the valve assembly is in the cut-off state, the water inlet is separated from the inlet, and the water outlet is separated from the outlet.

17. The filter cartridge assembly of claim 16, wherein upon assembly of the filter cartridge with the seat, the valve assembly is caused to switch from the off state to the on state by the filter cartridge being in contact engagement with the valve assembly.

18. The filter cartridge assembly of claim 16, wherein in the on state, the inlet is blocked from the outlet; in the off state, the inlet communicates with the outlet.

19. A water heater comprising a filter cartridge assembly according to any one of claims 15-18.