Cleaning device

Abstract

The invention discloses a cleaning device, comprising: a housing in which a first cavity and a second cavity communicating with each other are formed; the filter screen is arranged in the first cavity, and the upstream side of the filter screen is communicated with the second cavity; an inlet of the circulating pump is communicated with the downstream side of the filter screen; the backflushing part is arranged in the first cavity and communicated with an outlet of the circulating pump, and a spray hole which is open towards the filter screen is formed in the backflushing part. According to the cleaning equipment designed by the invention, the filter screen is washed by washing water, impurities attached to the filter screen are washed down, the water permeation effect of the filter screen is ensured, and the amount of impurities in the washing water is reduced.

Description

Technical Field

[0001] This invention relates to the field of cleaning equipment, and more particularly to a cleaning device. Background Technology

[0002] In related technologies, dishwashers are used to clean stains and food residues on tableware. Dishwashers generally use recycled water and have filters inside to filter residues in the recycled water. To ensure the water permeability of the filters, users need to clean them regularly. In some existing technologies, after the filters remove residues from the recycled water, the filtered water washes away and disperses the residues. Small particles of residue can enter the recycled water and be carried onto the tableware, causing secondary contamination of the tableware. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of this invention is to provide a cleaning device. The cleaning device designed according to this invention utilizes washing water to flush away impurities adhering to the filter screen, ensuring the water permeability of the filter screen and reducing the amount of impurities in the washing water.

[0004] The cleaning device according to the present invention includes: a housing having a first cavity and a second cavity communicating with each other; a filter screen disposed in the first cavity and having its upstream side communicating with the second cavity; a circulation pump having its inlet communicating with the downstream side of the filter screen; and a backflushing member disposed in the first cavity and communicating with the outlet of the circulation pump, the backflushing member having a spray hole opening toward the filter screen.

[0005] The cleaning device according to the present invention is equipped with a backwashing component to flush the filter screen with washing water, washing away the impurities attached to the filter screen, ensuring the water permeability of the filter screen, and saving water resources while improving the cleaning effect of the cleaning device on the object to be cleaned.

[0006] According to some embodiments of the present invention, the backflush member extends axially along the filter screen, and the nozzle is located on the surface of the backflush member facing the filter screen.

[0007] According to some embodiments of the present invention, the backwash member is located downstream of the filter screen.

[0008] According to some embodiments of the present invention, the distance between the backflush member and the filter screen in the radial direction of the filter screen is d, and satisfies: d≥3mm.

[0009] According to some embodiments of the present invention, the nozzle extends along the axial direction of the filter screen.

[0010] According to some embodiments of the present invention, the spray holes are configured as a plurality of holes, which are spaced apart along the axial direction of the filter screen.

[0011] According to some embodiments of the present invention, the spray areas of at least two of the nozzles overlap.

[0012] According to some embodiments of the present invention, the plurality of spray holes include at least a first hole, a second hole, and a third hole, the spray areas of the first hole, the second hole, and the third hole cover heights h1, h2, and h3 respectively in the axial direction of the filter screen, the height of the filter screen in the axial direction is H, and satisfies: [h1∪h2∪h3]≥H.

[0013] According to some embodiments of the present invention, the spray area of ​​the spray hole covers a height h in the axial direction of the filter screen, the height of the filter screen in the axial direction is H, and satisfies: h≥H.

[0014] According to some embodiments of the present invention, the backwash members are configured as a plurality of them, and the plurality of backwash members are arranged at intervals in the circumferential direction of the filter screen.

[0015] According to some embodiments of the present invention, the plurality of said backflushing members have different dimensions in the axial direction of the filter screen.

[0016] According to some embodiments of the present invention, at least two of the jets on the backwash members are staggered in the axial direction of the filter screen.

[0017] According to some embodiments of the present invention, the cleaning device further includes a drive motor connected to the filter screen and adapted to drive the filter screen to rotate, so that impurities attached to the filter screen are separated from the filter screen under centrifugal force.

[0018] According to some embodiments of the present invention, the cleaning device further includes a drain pump, the inlet of which is connected to the upstream side of the filter screen, and the outlet of which is connected to the outside of the housing.

[0019] In summary, the cleaning equipment according to the present invention uses washing water to rinse the filter screen, washing away the impurities attached to the filter screen, ensuring the water permeability of the filter screen, reducing the amount of impurities in the washing water, and saving water resources while improving the cleaning effect of the cleaning equipment on the objects to be cleaned.

[0020] Additional aspects and advantages of the invention 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 invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is an overall structural diagram of the cleaning equipment according to an embodiment of the present invention.

[0023] Figure 2 This is a partial cross-sectional view of a cleaning device according to an embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of the internal structure of a cleaning device according to some embodiments of the present invention.

[0025] Figure 4 This is a schematic diagram of the internal structure of a cleaning device according to other embodiments of the present invention.

[0026] Figure label:

[0027] 1. Cleaning equipment;

[0028] 10. Shell; 10a. First cavity; 10b. Second cavity; 10c. Connecting port; 11. Fixed cover;

[0029] 20. Filter screen;

[0030] 30. Circulating pump;

[0031] 40. Backflush part; 40a. Spray nozzle;

[0032] 50. Drive motor; 51. Transmission gear; 52. Drive shaft; 60. Drain pump. Detailed Implementation

[0033] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0034] In the description of this invention, 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," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] In related technologies, dishwashers are used to clean stains and food residues on tableware. Dishwashers generally use recycled water and have filters inside to filter residues in the recycled water. To ensure the water permeability of the filters, users need to clean them regularly. In some existing technologies, after the filters remove residues from the recycled water, the filtered water washes away and disperses the residues. Small particles of residue can enter the recycled water and be carried onto the tableware, causing secondary contamination of the tableware.

[0039] The following is for reference. Figures 1-4 A cleaning device 1 according to an embodiment of the present invention is described.

[0040] like Figures 1-4As shown, the cleaning device 1 according to the present invention includes: a housing 10, a filter screen 20, a circulation pump 30, and a backflush member 40. The housing 10 has a first cavity 10a and a second cavity 10b that are connected to each other. The filter screen 20 is disposed in the first cavity 10a and its upstream side is connected to the second cavity 10b. The inlet of the circulation pump 30 is connected to the downstream side of the filter screen 20. The backflush member 40 is disposed in the first cavity 10a and is connected to the outlet of the circulation pump 30. The backflush member 40 is provided with a spray hole 40a that opens toward the filter screen 20. Specifically, when the cleaning device 1 cleans the object to be cleaned, the flowing washing water carries away the impurities on the object. The washing water carrying the impurities flows from the second chamber 10b toward the first chamber 10a. Here, the filter screen 20 located in the first chamber 10a can filter the washing water. The washing water flows from the upstream side of the filter screen 20 toward the downstream side. Larger impurities in the washing water are blocked by the filter screen 20 on the upstream side, while smaller impurities flow with the washing water toward the downstream side of the filter screen 20 and flow toward the backwashing member 40 under the action of the circulation pump 30. The backwashing member 40 sprays this part of the washing water toward the filter screen 20 to rinse the filter screen 20, thereby washing away the impurities attached to the filter screen 20 and ensuring the water permeability of the filter screen 20.

[0041] The cleaning device 1 according to the present invention is provided with a backwashing member 40 to use washing water to rinse the filter screen 20, wash away the impurities attached to the filter screen 20, ensure the water permeability of the filter screen 20, and save water resources while improving the cleaning effect of the cleaning device 1 on the object to be cleaned.

[0042] In some embodiments, a filter element may also be provided in the second cavity 10b to perform preliminary filtration of the washing water and reduce the impurities carried by the washing water. The filter screen 20 located in the first cavity 10a can further filter the washing water, thereby improving the filtration effect of the cleaning device 1 on impurities.

[0043] In some embodiments, the second cavity 10b is connected to the first cavity 10a through a communication port 10c on the housing 10, and the washing water carrying impurities in the second cavity 10b can flow from the communication port 10c toward the first cavity 10a.

[0044] Understandably, under the pumping action of the circulating pump 30, the washing water enters the backwash member 40 at a certain speed and is sprayed onto the filter screen 20 through the nozzles 40a of the backwash member 40. The nozzles 40a on the backwash member 40 are open towards the filter screen 20. In some embodiments, the nozzles 40a can be directly opposite the filter screen 20, and the washing water sprayed from the nozzles 40a can be directly sprayed onto the filter screen 20; in other embodiments, the nozzles 40a may not be directly opposite the filter screen 20, and the washing water sprayed from the nozzles 40a can be sprayed onto the filter screen 20 along a parabolic trajectory. The design can be customized according to actual needs.

[0045] In some embodiments, the nozzle can be in various forms such as fan-shaped, conical, or surface-shaped.

[0046] According to some embodiments of the present invention, the radial distance between the backwash member 40 and the filter screen 20 is d, and satisfies: d ≥ 3 mm. It is understood that, to prevent impurities on the filter screen 20 from splashing onto the backwash member 40, the backwash member 40 needs to maintain a certain distance from the filter screen 20 to ensure the cleanliness of the spray holes 40a on the backwash member 40, thereby ensuring the cleanliness of the washing water sprayed from the spray holes 40a and reducing the contamination of the washing water by impurities. In some embodiments, the placement position of the backwash member 40 is related to the size of the internal space of the filter screen 20. The radial distance between the backwash member 40 and the filter screen 20 needs to be designed according to the size of the internal space of the filter screen 20. The specific placement position of the backwash member 40 and the specific radial distance between the backwash member 40 and the filter screen 20 are not limited here.

[0047] According to some embodiments of the present invention, such as Figures 2-4 As shown, the backwash member 40 extends along the axial direction of the filter screen 20, and the spray nozzle 40a is located on the surface of the backwash member 40 facing the filter screen 20. In some embodiments, the filter screen 20 is annular, and the backwash member 40 can be disposed on the upstream side or the downstream side of the filter screen 20. The backwash member 40 extends along the axial direction of the filter screen 20 so that the spray nozzle 40a can spray the filter screen 20 along the axial direction of the filter screen 20, increasing the coverage area of ​​the washing water sprayed on the filter screen 20, thereby improving the cleaning effect of the washing water on the filter screen 20.

[0048] According to some embodiments of the present invention, such as Figures 2-4As shown, the backwash member 40 is located downstream of the filter screen 20. It is understood that after the filter screen 20 filters the washing water, larger impurities in the washing water may adhere to the surface of the filter screen 20 located upstream. In this case, the backwash member 40 sprays washing water towards the filter screen 20 from its downstream side to flush away the impurities adhering to the surface of the filter screen 20 located upstream, thus separating the impurities from the filter screen 20. Positioning the backwash member 40 downstream of the filter screen 20 also prevents impurities from contaminating the backwash member 40, thereby preventing impurities from clogging the spray nozzles 40a on the backwash member 40 and preventing the backwash member 40 from re-contaminating the filter screen 20, ensuring the cleaning effect of the backwash member 40 on the filter screen 20.

[0049] According to some embodiments of the present invention, the spray hole 40a extends along the axial direction of the filter screen 20. At this time, the washing water sprayed from the spray hole 40a can spray onto the filter screen 20 along the axial direction of the filter screen 20, so as to fully spray the filter screen 20 and further improve the cleaning effect of the backwash member 40 on the filter screen 20.

[0050] In some embodiments, the backflushing member 40 is provided with a spray hole 40a extending axially along the filter screen 20. The water pressure of a single hole is large, and the force applied to impurities is also greater, which makes the impurities detach from the filter screen 20 more effectively.

[0051] According to some embodiments of the present invention, such as Figures 2-4 As shown, the spray holes 40a are constructed in multiple ways. The multiple spray holes 40a are spaced apart along the axial direction of the filter screen 20. The multiple spray holes 40a can spray water alternately or at the same time to achieve full spraying of the filter screen 20. Moreover, the multi-hole spraying method provides more comprehensive spraying.

[0052] In some embodiments, such as Figure 4 As shown, the backflush member 40 is located inside the annular filter screen 20, and the outer peripheral surface of the backflush member 40 is directly opposite to the inner surface of the annular filter screen 20. The outer peripheral surface of the backflush member 40 is provided with a plurality of spray holes 40a at intervals in the circumferential direction to spray the filter screen 20 along the circumferential direction of the filter screen 20.

[0053] In some embodiments, such as Figure 4 As shown, the outer peripheral surface of the backflushing member 40 is provided with multiple sets of spray holes 40a at intervals in the circumferential direction. Each set of spray holes 40a includes multiple sets of spray holes at intervals in the axial direction, so as to spray along the circumferential and axial directions of the filter screen 20, and clean the filter screen 20 more thoroughly.

[0054] According to some embodiments of the present invention, the spray areas of at least two spray holes 40a overlap. This overlap can be between two spray holes 40a, or between more spray holes 40a. Furthermore, the overlap can be between adjacent spray holes 40a, or between spaced-apart spray holes 40a. By designing multiple spray holes 40a such that at least two spray holes 40a have overlapping spray areas, it is ensured that the washing water sprayed by the spray holes 40a can spray multiple times onto a portion of the filter screen 20, thereby improving the cleaning effect on the filter screen 20.

[0055] According to some embodiments of the present invention, the plurality of spray holes 40a include at least a first hole, a second hole, and a third hole. The spray areas of the first hole, the second hole, and the third hole cover the filter screen 20 at heights h1, h2, and h3 respectively in the axial direction. The height of the filter screen 20 in the axial direction is H, and the following condition is satisfied: [h1∪h2∪h3]≥H. In some embodiments, the first hole, the second hole, and the third hole can be arranged sequentially along the axial direction of the filter screen 20. In this case, the spray areas of the first hole and the second hole can overlap, the spray areas of the second hole and the third hole can overlap, or the spray areas of the first hole, the second hole, and the third hole all overlap. It is only necessary to ensure that the washing water sprayed from the plurality of spray holes 40a can cover the filter screen 20, that is, satisfy the condition: [h1∪h2∪h3]≥H, so as to achieve sufficient spraying of the filter screen 20.

[0056] According to some embodiments of the present invention, the spraying area of ​​the nozzle 40a covers the filter screen 20 by a height h in the axial direction, and the filter screen 20 is at a height H in the axial direction, and satisfies: h≥H, so that the washing water sprayed from the nozzle 40a can cover the filter screen 20, thereby achieving sufficient spraying of the filter screen 20.

[0057] According to some embodiments of the present invention, such as Figures 2-3 As shown, the backwash element 40 is constructed in multiple parts, and the multiple backwash elements 40 are arranged at intervals in the circumferential direction of the filter screen 20. At this time, the multiple backwash elements 40 can spray at the same time to thoroughly clean the filter screen 20 in the circumferential direction, or the multiple backwash elements 40 can spray intermittently to improve the cleaning efficiency of the filter screen 20.

[0058] According to some embodiments of the present invention, such as Figures 2-3 As shown, the multiple backwash members 40 have different dimensions in the axial direction of the filter screen 20. The backwash members 40 of different sizes can take care of different positions and different heights of the filter screen 20 to clean the filter screen 20 more comprehensively. In addition, the longer backwash members 40 can spray to higher positions of the filter screen 20. The spray range of the longer backwash members 40 and the shorter backwash members 40 in the axial direction of the filter screen 20 overlaps to a certain extent, which can improve the spraying effect on the filter screen 20.

[0059] According to some embodiments of the present invention, such as Figures 2-3 As shown, the nozzles 40a on at least two backflush members 40 are staggered in the axial direction of the filter screen 20. The nozzles 40a at different heights can take care of different positions and different heights of the filter screen 20, so as to clean the filter screen 20 more thoroughly.

[0060] According to some embodiments of the present invention, such as Figure 1 As shown, the cleaning device 1 also includes a drive motor 50, which is connected to the filter screen 20 and adapted to drive the filter screen 20 to rotate. Here, in some embodiments, the backwash member 40 is located inside the annular filter screen 20, and at least one spray hole 40a is provided on the outer peripheral surface of the backwash member 40. The filter screen 20 can rotate so that the washing water sprayed by the backwash member 40 can be sprayed along the circumference of the filter screen 20, thereby cleaning the filter screen 20 more thoroughly.

[0061] Meanwhile, the rotation of the filter screen 20 allows impurities attached to the filter screen 20 to separate from the filter screen 20 under centrifugal force. In conjunction with the backwashing component 40 spraying washing water onto the filter screen 20, the impurities are further removed from the filter screen 20. This can thoroughly clean the filter screen 20, improve the cleaning effect of the filter screen 20, and thus improve the cleaning effect of the cleaning equipment 1.

[0062] And, such as Figures 1-2 As shown, a fixing cover 11 is provided on the housing 10 to connect with the filter screen 20 and fix the filter screen 20 on the fixing cover 11. The fixing cover 11 is connected to the drive shaft 52. The drive shaft 52 is arranged parallel to the drive motor 50. The drive motor 50 drives the drive shaft 52 to rotate through the transmission gear 51, so that the drive shaft 52 can drive the fixing cover 11 to rotate, thereby driving the filter screen 20 to rotate.

[0063] According to some embodiments of the present invention, such as Figures 1-2 As shown, the cleaning device 1 also includes a drain pump 60. The inlet of the drain pump 60 is connected to the upstream side of the filter screen 20, and the outlet of the drain pump 60 is connected to the outside of the housing 10. At this time, the washing water carrying more impurities can be directly discharged from the cleaning device 1, which can reduce the amount of impurities during the water circulation process, prevent impurities from re-entering the circulating water, and prevent the filter screen 20 from being contaminated.

[0064] In some embodiments, the inlet of the drain pump 60 is also connected to the second cavity 10b, thereby discharging excess wash water carrying impurities from the second cavity 10b.

[0065] In summary, the cleaning device 1 according to the present invention uses washing water to rinse the filter screen 20, washing away the impurities attached to the filter screen 20, ensuring the water permeability of the filter screen 20, reducing the amount of impurities in the washing water, and improving the cleaning effect of the cleaning device 1 on the object to be cleaned while saving water resources.

[0066] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0067] Although embodiments of the present invention have been shown and described above, variations, modifications, substitutions and alterations can be made to the above embodiments.

Claims

1. A cleaning device, characterized in that, include: A housing (10) having a first cavity (10a) and a second cavity (10b) that are in communication with each other. A filter screen (20) is disposed in the first cavity (10a) and the upstream side of the filter screen (20) is connected to the second cavity (10b); A circulation pump (30) is connected to the downstream side of the filter screen (20) through its inlet. A backflush member (40) is disposed in the first cavity (10a) and communicates with the outlet of the circulation pump (30). The backflush member (40) is provided with a spray hole (40a) that opens toward the filter screen (20).

2. The cleaning equipment according to claim 1, characterized in that, The recoil member (40) extends axially along the filter screen (20), and the nozzle (40a) is located on the surface of the recoil member (40) facing the filter screen (20).

3. The cleaning equipment according to claim 2, characterized in that, The backflush member (40) is located downstream of the filter screen (20).

4. The cleaning equipment according to claim 3, characterized in that, The distance between the backflush member (40) and the filter screen (20) in the radial direction of the filter screen (20) is d, and satisfies: d≥3mm.

5. The cleaning equipment according to claim 2, characterized in that, The nozzle (40a) extends along the axial direction of the filter screen (20).

6. The cleaning equipment according to claim 2, characterized in that, The nozzles (40a) are configured in multiple ways, and the multiple nozzles (40a) are spaced apart in the axial direction of the filter screen (20).

7. The cleaning equipment according to claim 6, characterized in that, The spray areas of at least two of the nozzles (40a) overlap.

8. The cleaning equipment according to claim 7, characterized in that, The plurality of spray holes (40a) include at least a first hole, a second hole and a third hole, the spray areas of the first hole, the second hole and the third hole cover the filter screen (20) at heights h1, h2 and h3 in the axial direction, respectively, the filter screen (20) at a height of H in the axial direction, and satisfying: [h1∪h2∪h3]≥H.

9. The cleaning equipment according to claim 2, characterized in that, The spray area of ​​the nozzle (40a) covers the filter screen (20) with a height of h in the axial direction, and the height of the filter screen (20) in the axial direction is H, and satisfies: h≥H.

10. The cleaning equipment according to claim 2, characterized in that, The backflush member (40) is configured as a plurality of such members, which are arranged at intervals in the circumferential direction of the filter screen (20).

11. The cleaning equipment according to claim 10, characterized in that, The multiple recoil elements (40) have different dimensions in the axial direction of the filter screen (20).

12. The cleaning equipment according to claim 10, characterized in that, At least two of the jets (40a) on the backflush member (40) are staggered in the axial direction of the filter screen (20).

13. The cleaning equipment according to any one of claims 1-12, characterized in that, It also includes a drive motor (50), which is connected to the filter screen (20) and adapted to drive the filter screen (20) to rotate so that impurities attached to the filter screen (20) are separated from the filter screen (20) under centrifugal force.

14. The cleaning equipment according to claim 1, characterized in that, It also includes a drain pump (60), the inlet of which is connected to the upstream side of the filter screen (20), and the outlet of which is connected to the outside of the housing (10).

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