CN117064294A - Spray cover and dish washer - Google Patents

Abstract

The invention discloses a spray cover, a filtering system and a dish washing machine, wherein the spray cover is used for the dish washing machine, the dish washing machine comprises a cylindrical filter screen arranged around the spray cover, the spray cover is arranged above the cylindrical filter screen, and the spray cover is provided with a water inlet hole and a water outlet hole communicated with the water inlet hole. The technical scheme of the invention aims to reduce the frequency of cleaning the filter screen by a user.

Description

Spray cover and dish washer

Technical Field

The invention relates to the technical field of dish washers, in particular to a spray cover and a dish washer.

Background

The dish washer can be used to wash the residue on the tableware, and the residue on the tableware breaks away from the back and flows to the filter screen along with rivers, and partial residue can be attached to on the filter screen under the filter effect of filter screen, and the residue that attaches to on the filter screen is long-pending little, and the user needs the periodic cleaning filter screen, however, the frequency that the user washs the filter screen is higher at present, and user experience is relatively poor.

Disclosure of Invention

The invention mainly aims to provide a spray cover, which aims to reduce the frequency of cleaning a filter screen by a user.

In order to achieve the above purpose, the spray cover provided by the invention is used for a dish washer, the dish washer comprises a cylindrical filter screen arranged around the spray cover, the spray cover is arranged above the cylindrical filter screen, and the spray cover is provided with a water inlet hole and a water outlet hole communicated with the water inlet hole.

Optionally, the shower cover has an axis of rotation, and the vector of the direction of the water outlet holes has a component tangential to the circumferential direction of the axis of rotation.

Optionally, the spray cover includes the casing, and locates the water guide part of casing surface, the casing has the intercommunication the inlet opening with the intercommunication mouth of apopore, water guide part with the casing restricts the intercommunication the first guiding gutter of intercommunication mouth, the apopore is the notch of first guiding gutter.

Optionally, a groove side wall of the first water guiding groove opposite to the communication opening shields part of the communication opening.

Optionally, a plurality of water outlets are formed.

Optionally, the spray cover further has a water storage cavity communicating the water inlet hole and the plurality of water outlet holes.

Optionally, the water storage cavity is provided with a first cavity wall provided with the water inlet hole, and the first cavity wall is provided with a second water guide groove extending from the water inlet hole towards the corresponding water outlet hole.

Optionally, the spray cover includes being equipped with the base plate of inlet opening and cover are located the cap of base plate, the cap is equipped with the apopore, the base plate with the cap restriction has water storage chamber, the base plate with interval between the cap is from the inlet opening towards the direction of base plate periphery reduces gradually.

Optionally, the periphery of the water inlet hole is convexly provided with a mounting convex part along the axial direction of the water inlet hole.

The invention also proposes a filtration system comprising:

a water cup provided with a water return cavity;

the spray cap;

the filtering structure comprises a cylindrical filter screen which is arranged around the spraying cover, and the cylindrical filter screen is arranged in the backwater cavity and below the spraying cover; and

and the water supply device is communicated with the water inlet hole of the spray cover.

Optionally, the filtering structure further comprises a columnar support, the columnar support comprises a columnar support body sleeved with the cylindrical filter screen and a rotating shaft connected to the columnar support body, and one end of the rotating shaft is rotatably connected to the water cup.

Optionally, the other end of the rotating shaft is connected with the spraying cover, the rotating shaft is provided with a water passing channel penetrating along the axis direction of the rotating shaft, one end of the water passing channel is communicated with the water supply device, and the other end of the water passing channel is communicated with the water inlet hole.

Optionally, the rotating shaft and the columnar support body are integrally formed.

Optionally, the columnar support body is provided with a fixing hole for interference fit of the rotating shaft.

The invention also proposes a dishwasher comprising:

a dishwasher body; and

the filtration system described above.

In the technical scheme of the invention, the spray cover is arranged above the cylindrical filter screen, so that the residue is prevented from being blocked, and the residue is prevented from falling into the cylindrical filter screen directly, so that larger residue is prevented from blocking meshes of the cylindrical filter screen, smaller residue can smoothly pass through the meshes, the amount of the residue accumulated on the filter screen is reduced, and the frequency of cleaning the cylindrical filter screen is reduced; in addition, the water sprayed from the water outlet hole of the spray box can impulse the residue which is adhered to the net wire of the cylindrical filter screen and can pass through the net holes, so that the residue can be accumulated on the filter screen, and the frequency of cleaning the cylindrical filter screen is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a plan view showing a part of the structure of an air conditioner according to the present invention;

FIG. 2 is a bottom view of FIG. 1;

FIG. 3 is a cross-sectional view of FIG. 1;

FIG. 4 is an enlarged view at A of FIG. 3;

FIG. 5 is an overall view of the spray cap, cylindrical screen and cylindrical support of FIG. 3;

FIG. 6 is an overall view of the spray cap and column bracket of FIG. 5;

fig. 7 is a schematic view of the shower cover of fig. 6.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				100	Water cup	230	Mounting boss
100a	Water return cavity	310	Cylindrical filter screen
				200	Spray cover	320	Columnar support
200a	Water inlet	321	Columnar support body
				200b	Water outlet	322	Rotary shaft
200c	Communication port	322a	Water passage
				200d	Water storage cavity	330	Plane filter screen
210	Shell body	340	Portable cup
				211	Substrate board	400	Water supply device
211a	Second water guide groove	410	Washing pump
				212	Shell cover	420	Spray pipe
220	Water guide part

The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that all directional indications (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship between the components, the movement condition, etc. in a specific posture, and if the specific posture is changed, the directional indication is changed accordingly.

In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

Embodiments of the present invention 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 and intended to explain the present invention and should not be construed as limiting the invention.

The following disclosure provides many different embodiments, or examples, for implementing different structures of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the applicability of other processes and/or the use of other materials.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

The time of washing dishes occupies more time, in order to liberate the time of washing dishes, the time is applied to more meaningful matters, the dish washing machine is used for washing residues on tableware, the residues on the tableware are separated and flow to the filter screen along with water flow, part of the residues can be attached to the filter screen under the filtering effect of the filter screen, the attached residues on the filter screen are little, a user needs to clean the filter screen regularly, however, the frequency of washing the filter screen by the user is higher at present, and the user experience is poor. To this end, the invention proposes a dishwasher. It will be appreciated that the dishwasher may not only wash dishes but also chopsticks, plates, dishes, knives, forks and the like.

Referring to fig. 1, 2, 3 and 7, in an embodiment of the present invention, the dishwasher includes: the dishwasher body and the filter system, as will be appreciated, are designed to filter debris dislodged from the dishware. Specifically, the dishwasher body is provided with a washing cavity, tableware can be placed in the washing cavity for washing, the filtering system comprises a water cup 100, a spray cover 200, a filtering structure and a water supply device 400, the water cup 100 is provided with a water return cavity 100a for receiving water flow from the washing cavity, it is understood that residues are usually accompanied in the water flow, the water flow needs to be filtered before entering the water return cavity 100a, the filtering structure is arranged in the water return cavity 100a, the filtering structure comprises a cylindrical filter screen 310 for filtering, under the action of the cylindrical filter screen 310, the water flow between the cavity wall of the water return cavity 100a and the cylindrical filter screen 310 is smaller even if residues are accompanied, the residues do not cause blockage to a water circulation system or a water discharge system of the dishwasher body, the cylindrical filter screen 310 is provided with a net wire and net holes limited by the net wire, and some residues which can pass through the net holes may be attached to the net wire, the cylindrical filter screen 310 is arranged around the spray cap 200, which is favorable for flushing the screen wires of the filter screen with water sprayed from the water outlet hole 200b of the spray cap 200, so as to flush the residue from the screen wires, thereby reducing the adhesion of the residue to the cylindrical filter screen 310, reducing the frequency of cleaning the cylindrical filter screen 310 by a user, improving the user experience, the cylindrical filter screen 310 is surrounded by itself to form a filter cavity, the filter cavity is provided with an upward opening, the spray cap 200 is arranged above the cylindrical filter screen 310, which is favorable for separating the residue, preventing the residue from falling into the cylindrical filter screen 310 directly, thereby preventing the larger residue from blocking the screen wires of the cylindrical filter screen 310, enabling the smaller residue to smoothly pass through the screen wires, reducing the amount of the residue accumulated on the filter screen, reducing the frequency of cleaning the cylindrical filter screen 310, improving the user experience, and needless to say, the water supply device 400 is used for supplying water to the spray cap 200, the water supply device 400 communicates with the water inlet hole 200a of the shower cover 200.

In an embodiment, referring to fig. 4 to 6, the filtering structure further includes a cylindrical support 320, the cylindrical support 320 includes a cylindrical support body 321 for sleeving the cylindrical filter screen 310, and a rotating shaft 322 connected to the cylindrical support body 321, one end of the rotating shaft 322 is rotatably connected to the water cup 100, specifically, the cylindrical support body 321 is provided for mounting the cylindrical filter screen 310, so that the shape of the cylindrical filter screen 310 is kept stable, the cylindrical support body 321 rotates relative to the water cup 100 through the rotating shaft 322, so as to drive the cylindrical filter screen 310 to move relatively to the water in the water cup 100, so that residues attached to the cylindrical filter screen 310 are separated, thereby reducing the frequency of cleaning the cylindrical filter screen 310 and improving the user experience;

however, in other embodiments, one end of the rotating shaft 322 is fixed to the water cup 100, and the cylindrical support body 321 and the rotating shaft 322 rotate relatively to drive the filter screen to move relative to the water in the water cup 100, and of course, it is also possible that the cylindrical support body 321 and the rotating shaft 322 rotate relatively, and one end of the rotating shaft 322 is connected to the water cup 100.

Further, in an embodiment, the other end of the rotating shaft 322 is connected to the spray cap 200, the rotating shaft 322 is provided with a water channel 322a penetrating along the axis direction of the rotating shaft 322, one end of the water channel 322a is communicated with the water supply device 400, and the other end is communicated with the water inlet 200a, it can be understood that the water provided by the water supply device 400 is conveyed into the spray cap 200 through the water channel 322a, the additional arrangement of a pipeline is avoided to be communicated with the spray cap 200 and the water supply device 400, the miniaturization of the filtering system is facilitated, the rotating shaft 322 not only enables the columnar bracket 320 to rotate, but also supplies water to the spray cap 200, the functions of the rotating shaft 322 are greatly enriched, it is worth mentioning that the water supply device 400 comprises a washing pump 410 and a spray pipe 420, the bottom of the backwater cavity 100a is provided with a water receiving hole, one end of the spray pipe 420 is communicated with the washing pump 410, and the other end of the water receiving hole is also communicated with one end of the rotating shaft 322 close to the water receiving hole, so that the water supply device 400 supplies water to the spray cap 200;

of course, in other embodiments, if it is considered that the rotation shaft 322 needs to maintain high structural strength, a pipeline may be added to connect the water supply device 400 and the shower cover 200.

The connection manner between the rotating shaft 322 and the columnar support body 321 is various, in one embodiment, the rotating shaft 322 and the columnar support body 321 are integrally formed, so that the assembly process of the rotating shaft 322 and the support body is reduced, for example, the assembly process can be performed by injection molding and the like; however, the present design is not limited thereto, and in other embodiments, in consideration of reducing the manufacturing difficulty of the columnar support 320, in other embodiments, the columnar support body 321 and the rotation shaft 322 may be provided as separate members and then connected together by means of assembly, for example, the columnar support body 321 is provided with a fixing hole for interference fit of the rotation shaft 322 so that the rotation shaft 322 is tightly fitted with the columnar support body 321; alternatively, the columnar bracket body 321 and the rotating shaft 322 may be provided with mutually matched engagement structures, such as a buckle part and the like; as another example, the columnar bracket body 321 and the rotation shaft 322 are connected by means of screws or the like. Of course, in still another embodiment, the columnar bracket body 321 may be further connected to the rotation shaft 322 by welding to increase the structural strength of the columnar bracket 320, and of course, from the viewpoint of manufacturing cost of the columnar bracket 320, the columnar bracket body 321 and the rotation shaft 322 may be further connected by bonding.

Specifically, in one embodiment, the columnar support 320 includes an upper ring frame, a lower ring frame parallel to the upper ring frame, and a plurality of support rods connecting the upper ring frame and the lower ring frame, the plurality of support rods are arranged at intervals along the axial direction of the upper ring frame, and the plurality of support rods are parallel to each other. Of course, further, in an embodiment, the upper ring frame and/or the lower ring frame are/is provided with a connecting portion, and the connecting portion is provided with a fixing hole.

It can be appreciated that, in addition to the filtering structure, the spray cap 200 plays a very important role in the filtering system, and the spray cap 200 drops the residues attached to the cylindrical filter screen 310, so that the frequency of cleaning the cylindrical filter screen 310 is reduced, and the user experience is improved; the spray cap 200 has a water inlet 200a and a water outlet 200b connected to the water inlet 200a, in an embodiment, the spray cap 200 has a rotation axis, a vector of the water outlet 200b in a direction has a component tangential to a circumferential direction of the rotation axis, specifically, the spray cap 200 is connected to a rotation shaft 322 of the columnar support 320, the rotation axis is an axis of the rotation shaft 322, a water velocity of water sprayed from the water outlet 200b has a component speed perpendicular to the rotation axis so as to drive the rotation shaft 322 to rotate, thereby providing a power for relatively moving the cylindrical filter screen 310 arranged on the columnar support body 321 with water in the water cup 100, so that residues on the cylindrical filter screen 310 can be moved by water in the water cup 100, thereby reducing residues attached to the cylindrical filter screen 310, and it can be understood that the spray cap 200, the columnar support 320 and the cylindrical filter screen 310 rotate as a whole, the water sprayed from the spray cap 200 can also pass through a mesh opening on the columnar support 320 to the water cup 100 to reduce the cost of water cup 100 to be attached to a water cup 100 to a water return cavity of the dishwasher, and reduce the cost of water return to the water cup 100 a;

of course, in other embodiments, the direction of the water outlet 200b is parallel to the rotation axis and faces the filter cavity defined by the cylindrical filter screen 310, so that the water flow speed in the filter cavity can be increased, so that the water in the filter cavity is converted to a turbulent state, and under the impact of the water flow in the turbulent state, the residues on the net threads attached to the cylindrical filter screen 310 are washed off by the water flow, so as to separate from the cylindrical filter screen 310, thereby reducing the frequency of cleaning the filter screen by a user, and greatly improving the user experience.

It should be noted that in other embodiments, a motor may be used to provide a power source for the shower cover 200, the motor is connected to the shower cover 200 in a driving manner, and the column-shaped support 320 may be provided with another motor.

In an embodiment, the spray cap 200 further includes a housing 210, and a water guiding portion 220 disposed on an outer surface of the housing 210, the housing 210 has a communication port 200c for communicating the water inlet 200a and the water outlet 200b, the water guiding portion 220 and the housing 210 limit a first water guiding groove for communicating the communication port 200c, and the water outlet 200b is a notch of the first water guiding groove, so that a water flow direction of water flowing through the communication port 200c is changed by guiding the first water guiding groove, it is worth mentioning that the water guiding portion 220 can be manufactured separately from the housing 210, the water guiding portion 220 and the housing 210 can be connected by bonding, welding, etc. so that manufacturing of the spray cap 200 becomes simple, and the water guiding portion 220 can be added to the old spray cap 200 to obtain a new spray cap 200, thereby reducing development cost of the spray cap 200.

Further, in an embodiment, the side wall of the first water guiding groove opposite to the communication opening 200c shields a part of the communication opening 200c, specifically, the water flow in the spray cap 200 flows out from the opening defined by the communication opening 200c and the water outlet 200b, so that on one hand, the speed of the sprayed water flow has a component perpendicular to the rotation axis, and on the other hand, the spraying range of the spray cap 200 is increased, so that more residues attached to the cylindrical filter 310 are sprayed, and the residues are further promoted to be separated from the cylindrical filter 310. Of course, in other embodiments, the side wall of the first water guiding groove opposite to the communication port 200c completely shields the communication port 200c, so as to ensure that the shower cover 200 has a larger rotation speed.

In one embodiment, the water outlet holes 200b are provided in a plurality, and the plurality of water outlet holes 200b are beneficial to increase the cleaning range, so that more residues attached to the cylindrical filter 310 are sprayed, and the residues are further separated from the cylindrical filter 310. Specifically, the resultant vector of the directions of the plurality of water outlet holes 200b has a component perpendicular to the rotation axis, and of course, in other embodiments, the directions of the plurality of water outlet holes 200b are parallel to the rotation axis.

Further, the shower cover 200 further has a water storage chamber 200d communicating the water inlet 200a and the water outlet 200b, specifically, water from the water inlet 200a can fill the water storage chamber 200d, water in the water storage chamber 200d is sprayed out from the water outlet 200b, the water storage chamber 200d provides a water storage space, it is beneficial to ensure that water flow from the water outlet 200b can be sprayed out in a stranded manner, and when the shower cover 200 is started next time, water can be sprayed out from the water outlet 200b immediately due to water in the water storage chamber 200 d. However, the present design is not limited thereto, and the water inlet 200a is provided with a plurality of water inlet holes 200a, and a water inlet 200a is provided corresponding to a water outlet 200 b.

Further, in order to accelerate the water from the water outlet 200b of the water inlet 200a, in one embodiment, the water storage chamber 200d has a first chamber wall provided with the water inlet 200a, the first chamber wall is provided with a second water guiding groove 211a extending from the water inlet 200a towards the corresponding water outlet 200b, the water entering the water storage chamber 200d from the water inlet 200a can be rapidly ejected from the water outlet 200b under the guidance of the second water guiding groove 211a, specifically, the second water guiding groove 211a is provided with a plurality of second water guiding grooves 211a, one end of each second water guiding groove 211a is connected with the water inlet 200a, and the water is scattered from the water inlet 200a towards the corresponding water outlet 200 b.

In an embodiment, the spray cap 200 includes a base plate 211 provided with the water inlet hole 200a and a cap 212 covering the base plate 211, the cap 212 is provided with the water outlet hole 200b, the base plate 211 and the cap 212 define the water storage cavity 200d, the space between the base plate 211 and the cap 212 gradually decreases from the water inlet hole 200a toward the peripheral direction of the base plate 211, specifically, water entering the water inlet hole 200a flows to the water outlet hole 200b along the inner wall surface of the cap 212 after being sprayed to the cap 212, so as to accelerate the water to be sprayed from the water outlet hole 200 b. Specifically, the housing 210 includes a base plate 211 and a housing cover 212. Of course, in other embodiments, the cover 212 has an inner wall surface that is parallel to the base 211.

In an embodiment, the inner wall surface of the housing cover 212 is provided with an arc surface, which is favorable for reducing the resistance of the water flowing on the inner wall of the housing cover 212, and the arc surface may be a spherical arc surface, an ellipsoidal arc surface, or even an irregular arc surface, as long as the arc surface satisfies that the distance between the base plate 211 and the housing cover 212 gradually decreases from the water inlet 200a toward the peripheral direction of the base plate 211, and of course, in other embodiments, a pyramid-shaped space, such as a triangular prism, a rectangular pyramid, etc., is enclosed by the inner wall of the housing cover 212.

In one embodiment, the junction between the cover 212 and the base 211 is smoothly transited to reduce the flow resistance of water in the water storage chamber 200 d.

It should be noted that, the cover 212 and the base plate 211 are integrally formed, which is favorable for reducing the assembling procedure of the spray cover, and the integrally formed modes include various modes, for example, the cover 212 and the base plate 211 can be integrally formed in a blow molding mode, and of course, in other embodiments, the cover 212 and the base plate 211 can be also arranged as separate components and are connected together in a mutually assembled mode, so that the processing difficulty of forming the water storage cavity 200d is reduced, the research and development cost is reduced, and of course, besides the assembling mode, the cover 212 and the base plate 211 can be connected together in a welding mode, etc., so that the connecting gap between the cover 212 and the base plate 211 can be basically eliminated, the water can be discharged from the water outlet 200b, and the water utilization rate of the spray cover 200 is improved.

As shown in fig. 7, it can be seen that the outer surface of the cover 212 has connecting traces, in an embodiment, in order to reduce the manufacturing difficulty of the cover 212, the cover 212 is divided into a plurality of connecting portions from the center of the cover 212 toward the periphery of the cover 212, and the plurality of connecting portions are sequentially connected around the center to form the cover 212, so that the manufacturing difficulty of the cover 212 is greatly reduced, and of course, in other embodiments, the cover 212 may be integrally formed, so as to reduce the manufacturing process of the cover 212, for example, by injection molding.

In an embodiment, the periphery of the water inlet 200a is provided with a protruding mounting portion 230 along the axial direction of the water inlet 200a, specifically, the protruding mounting portion 230 is provided for the rotating shaft 322 to pass through to connect the water supply device 400 and the water inlet 200a, and the protruding mounting portion 230 can stabilize the connection between the shower cover 200 and the rotating shaft 322.

To perfect the function of the filtering system, in an embodiment, the filtering structure further includes a planar filter screen 330 provided with a mounting hole, and a lifting cup 340 disposed in the mounting hole, the water return cavity 100a of the water cup 100 has a water return opening opened upwards, the planar filter screen 330 covers the water return opening, the mounting hole is communicated with the filter cavity of the cylindrical filter screen 310, and the lifting cup 340 includes a filtering portion for filtering residues, avoiding residues from entering the filter cavity, and realizing preliminary filtration.

The foregoing description is only of the optional embodiments of the present invention, and is not intended to limit the scope of the invention, and all the equivalent structural changes made by the description of the present invention and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the invention.

Claims (15)

1. The utility model provides a spray lid for dish washer, dish washer includes around spray the cylinder filter screen that the lid set up, spray the lid and locate the top of cylinder filter screen, its characterized in that, spray the lid and have the inlet opening, and communicate the apopore of inlet opening.

2. The spray cap of claim 1, wherein the spray cap has an axis of rotation and the vector of the direction of the water outlet has a component tangential to the circumferential direction of the axis of rotation.

3. The spray cap of claim 2, wherein the spray cap comprises a housing and a water guiding part arranged on the outer surface of the housing, the housing is provided with a communication port for communicating the water inlet hole and the water outlet hole, the water guiding part and the housing limit a first water guiding groove communicated with the communication port, and the water outlet hole is a notch of the first water guiding groove.

4. The spray cap of claim 3, wherein a trough sidewall of the first water guide trough opposite the communication port obstructs a portion of the communication port.

5. The spray cap of claim 1, wherein the water outlet is provided in plurality.

6. The spray cap of claim 5, further comprising a water reservoir communicating with said water inlet opening and said plurality of water outlet openings.

7. The spray cap of claim 6, wherein the water storage chamber has a first chamber wall provided with the water inlet opening, the first chamber wall being provided with a second water guide channel extending from the water inlet opening toward the corresponding water outlet opening.

8. The spray cap of claim 6, wherein the spray cap comprises a base plate provided with the water inlet hole and a cap covering the base plate, the cap is provided with the water outlet hole, the base plate and the cap limit the water storage cavity, and the distance between the base plate and the cap is gradually reduced from the water inlet hole to the peripheral direction of the base plate.

9. The shower cover of claim 1, wherein the periphery of the water inlet hole is provided with a mounting protrusion protruding in the axial direction of the water inlet hole.

10. A filtration system, comprising:

a water cup provided with a water return cavity;

the shower cap of any one of claims 1 to 9;

the filtering structure comprises a cylindrical filter screen which is arranged around the spraying cover, and the cylindrical filter screen is arranged in the backwater cavity and below the spraying cover; and

and the water supply device is communicated with the water inlet hole of the spray cover.

11. The filter system of claim 10, wherein the filter structure further comprises a cylindrical support, the cylindrical support comprising a cylindrical support body in which the cylindrical filter screen is nested, and a rotating shaft connected to the cylindrical support body, one end of the rotating shaft being rotatably connected to the water cup.

12. The filter system of claim 11, wherein the other end of the rotary shaft is connected to the shower cover, the rotary shaft is provided with a water passing channel penetrating along the axial direction of the rotary shaft, and one end of the water passing channel is communicated with the water supply device, and the other end of the water passing channel is communicated with the water inlet hole.

13. The filtration system of claim 11, wherein the rotation shaft is integrally formed with the cylindrical support body.

14. The filter system of claim 11, wherein the cylindrical support body is provided with a securing hole for interference fit of the rotating shaft.

15. A dishwasher, comprising:

a dishwasher body; and

a filtration system according to any one of claims 10 to 14.