A cleaning machine

Abstract

The present invention relates to a cleaning machine, comprising a housing, a first water outlet component, a second water outlet component and a water pumping mechanism, wherein the first water outlet component is used to provide bottom spraying, and the second water outlet component is used to provide upper spraying, and the water pumping mechanism comprises a water-drawing assembly capable of independently supplying water to the first water outlet component and the second water outlet component, and a driving member for providing power to the water-drawing assembly, wherein the bottom of the water-drawing assembly is supported on the inner bottom wall of the housing and has a gap between the water-drawing assembly and the inner bottom wall of the housing, and the driving member is arranged on the outer bottom wall of the housing, and the output shaft extends into the housing and is connected to the water-drawing assembly. The water pumping mechanism of the present invention can independently supply water to the first water outlet component and the second water outlet component, thereby avoiding the problem of competition between the two pipelines, increasing the head and water flow of each water flow, and facilitating the improvement of the cleaning effect; the water-drawing assembly of the present invention is supported on the inner bottom wall of the housing, and the driving member is arranged on the outer bottom wall of the housing, which facilitates the installation of the water pumping mechanism.

Description

Technical Field

[0001] The invention relates to a washing machine for washing dishes, fruits and vegetables. Background Art

[0002] For tabletop and cabinet dishwashers, due to their large washing space, in order to achieve better washing results, they are generally designed with three spray arms: top, middle and bottom. When working, the washing pump transports water to the top, middle and bottom spray arms through pipes. The water is sprayed out from the top, middle and bottom spray arms, rinses the dishes, and then falls back into the water cup at the bottom of the dishwasher. The washing pump transports the fallen water to the top, middle and bottom spray arms again, completing a cycle.

[0003] For example, the Chinese invention patent application "Energy-saving Dishwasher" (application number: CN201611232345.5) with application publication number CN106859563A discloses a structure, which includes a cavity for accommodating tableware and providing a cleaning space, a spray system for spraying water to wash the tableware, and a pump body for pumping water and supplying water to the spray system; the spray system is arranged in the cavity; the water pumping end of the pump body is connected to the cavity, and the water supply end is connected to the spray system; the spray system includes an inner water pipe and two or more spray devices, and the two or more spray devices are respectively arranged on the inner water pipe; the water supply end of the pump body is connected to a water distribution device, and the water distribution device is provided with two or more water outlets corresponding to the two or more spray devices, and the spray devices are connected to the corresponding water outlets; when working, the water distribution device opens one or more water outlets according to instructions, so that one or more spray devices perform cleaning work.

[0004] In the above-mentioned existing dishwashers capable of bottom spraying and top spraying, the pump used to supply water to the spray system generally adopts a closed structure, that is, the volute of the washing pump is arranged below the housing, and a rotatable impeller is provided in the volute. The water inlet of the washing pump volute is connected to the bottom of the washing chamber, and the water outlet of the volute is connected to a water diversion device, which divides the water flow into a first branch supplying water to the bottom spray arm and a second branch supplying water to the top spray arm.

[0005] Because the water pressure for both the top and bottom sprays is independently supplied by the washing pump, the head, flow rate, and impact force of the water flow in each branch are significantly reduced after diversion, affecting the cleaning effect. In addition, for an open water pump, the bottom of the water pump volute needs to be installed in the casing. However, in the existing water tank cleaning machine using an open water pump, the water pump needs to be fixed by a guide seat, which is not suitable for the installation of the new water cup volute. Summary of the Invention

[0006] The first technical problem to be solved by the present invention is to provide a cleaning machine which can provide power for two washing water channels respectively, thereby increasing the head and water flow and thus improving the cleaning effect, in view of the current status of the existing technology.

[0007] The second technical problem to be solved by the present invention is to provide a cleaning machine that is convenient for installing a new water pump in view of the current status of the existing technology.

[0008] The technical solution adopted by the present invention to solve at least one of the above-mentioned technical problems is: a cleaning machine, comprising a box body, a first water outlet component, a second water outlet component and a water pumping mechanism, the first water outlet component is arranged at the lower part of the box body, for providing bottom spraying, the second water outlet component is arranged at the upper part of the box body, for providing upper spraying, the water pumping mechanism is arranged at the bottom of the box body and is used to supply water to the first water outlet component and the second water outlet component, and is characterized in that: the water pumping mechanism includes a water-drawing component that can independently supply water to the first water outlet component and the second water outlet component respectively, and a driving component for providing power to the water-drawing component, the bottom of the water-drawing component is supported on the bottom wall of the box body and there is a gap between the bottom wall of the box body, the driving component is arranged on the bottom wall of the box body and the output shaft extends into the box body and is connected with the water-drawing component.

[0009] In the above embodiment, a mounting opening is formed in the bottom wall of the housing. The upper end surface of the driver partially extends upward to form a boss that fits within the mounting opening. The output shaft is located in the center of the boss, and the bottom of the water pumping assembly is supported on the boss. The driver is a motor, and the upper end of the motor provides support for the water pumping assembly. This simplifies the structure of the housing bottom wall, facilitating production and assembly, while also preventing the uneven structure of the housing bottom wall from adversely affecting water return.

[0010] Preferably, the upper surface of the boss is provided with an upwardly extending positioning block near the edge, against which the bottom wall of the water-drawing assembly rests, thereby restricting the gap between the bottom wall of the water-drawing assembly and the bottom wall of the housing. Using the positioning block on top of the driver to support the water-drawing assembly helps simplify the structure of the bottom wall of the housing.

[0011] Preferably, the positioning block partially extends beyond the edge of the boss, and the periphery of the mounting opening is provided with a positioning notch that cooperates with the outer edge of the corresponding positioning block to circumferentially limit the driver. This structure allows the positioning block to circumferentially limit the motor and the bottom wall of the box, facilitating assembly.

[0012] Preferably, the upper surface of the boss is further provided with an upwardly extending positioning post, and the bottom wall of the water-drawing assembly is provided with a positioning sleeve that plugs into and connects with the positioning post. Three sets of cooperating structures for the positioning post and the positioning sleeve are provided. In addition to the positioning block supporting the water-drawing assembly, these positioning posts and sleeves not only further support the water-drawing assembly but also circumferentially limit its position, facilitating assembly.

[0013] Preferably, the inner bottom wall of the housing is provided with a threaded post extending upwardly from the periphery of the mounting opening. The outer peripheral wall of the water-drawing assembly is provided with a connecting portion capable of abutting against the threaded post, and the connecting portion is provided with mounting holes corresponding to the arrangement of the threaded post. After support from the positioning block and the positioning post and the positioning sleeve, the mounting holes precisely align with the threaded post, and the two can be fastened together using screws, thereby improving the reliability of the water-drawing assembly assembly.

[0014] In order to facilitate the locking connection between the driving member and the box body, the upper end surface of the driving member located at the periphery of the boss abuts against the outer bottom wall of the box body and is locked by screws.

[0015] Preferably, a mounting plate is provided on the inner bottom wall of the housing, surrounding the mounting opening. Screws pass through the mounting plate, the housing bottom wall, and the upper end surface of the driver to securely connect the three. This structure improves assembly reliability. When assembled, the housing bottom wall, the upper surface of the mounting plate, and the upper surface of the boss remain roughly flush, thereby preventing interference with the smooth return of water.

[0016] The water drawing assembly of the present invention comprises:

[0017] Upper impeller, the upper part is a centrifugal impeller and the lower part is an axial flow impeller;

[0018] The lower impeller is a centrifugal impeller;

[0019] An upper shell having a first accommodating cavity for mounting the upper portion of the upper impeller, a spray hole in fluid communication with the first accommodating cavity being formed on the top wall and / or side wall of the upper shell, and the upper shell constituting the first water outlet component; and

[0020] The lower shell is connected to the bottom of the upper shell, the upper part of the lower shell has a second accommodating chamber for installing the lower part of the upper impeller, the side wall of the lower shell is provided with a first water inlet for supplying water into the second accommodating chamber, the lower part of the lower shell has a third accommodating chamber for installing the lower impeller, the bottom wall of the lower shell is provided with a second water inlet for supplying water into the third accommodating chamber, and the side wall of the lower shell is provided with a water outlet for supplying water from the third accommodating chamber.

[0021] The above structure constitutes an open dual-pump system, in which the second accommodating chamber, the first accommodating chamber and the upper impeller located in the upper part are used to supply water for bottom spraying, and the third accommodating chamber and the lower impeller located in the lower part are used to supply water for top and / or middle spraying. The same power source is used. Since the power of the two water flows is independently supplied by the corresponding pumps, the head and water flow of each water flow are increased, which is conducive to improving the cleaning effect.

[0022] The bottom wall of the box body is partially recessed to form a first receiving groove for installing the lower shell body. The water outlet of the lower shell body is connected to a water pipe tangentially connected to the third receiving chamber. The side wall of the first receiving groove is provided with a water outlet for fluid communication between the water pipe and the second water outlet component. When assembled, the distance between the outer wall of the lower shell body and the inner wall of the first receiving groove is 3 to 10 mm.

[0023] Compared with the prior art, the advantages of the present invention are that the water pumping mechanism of the present invention can independently supply water to the first water outlet component and the second water outlet component, thereby avoiding the problem of competition between the two pipelines, improving the head and water flow of each water flow, and being beneficial to improving the cleaning effect; the water-drawing assembly of the present invention is supported on the bottom wall of the box body, and the driving part is arranged on the bottom wall of the box body, which is convenient for the installation of the above-mentioned water pumping mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A partial structural diagram of an embodiment of the present invention;

[0025] Figure 2 is a cross-sectional view of an embodiment of the present invention;

[0026] Figure 3 for Figure 2 A partial enlarged view of

[0027] Figure 4 Schematic diagram of the assembly structure of the bottom of the box and part of the water-drawing component in an embodiment of the present invention;

[0028] Figure 5 for Figure 4 Exploded view of

[0029] Figure 6 for Figure 5 Enlarged view of part A;

[0030] Figure 7 This is a schematic structural diagram of the lower housing in an embodiment of the present invention;

[0031] Figure 8 2 is a diagram of the assembly structure of the lower shell and the suction nozzle in an embodiment of the present invention. DETAILED DESCRIPTION

[0032] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0033] like Figures 1 to 8 As shown, the cleaning machine of this embodiment includes a box body 6, a first water outlet component, a second water outlet component b and a water pumping mechanism a. The first water outlet component is arranged at the lower part of the box body 6 and is used to provide bottom spraying. The second water outlet component b is arranged at the upper part of the box body 6 and is used to provide upper spraying. The water pumping mechanism a is arranged at the bottom of the box body 6 and is used to supply water to the first water outlet component and the second water outlet component b.

[0034] The water pump mechanism a comprises a water draw assembly 100 capable of independently supplying water to the first and second water outlet components b, and a drive member 5 for powering the water draw assembly 100. The bottom of the housing 6 has a recessed drain area 61, topped by a drain plate 62. The bottom of the water draw assembly 100 is supported on the inner bottom wall of the housing 6 corresponding to the drain area 61, with a gap 60 between the bottom of the water draw assembly 100 and the inner bottom wall of the housing 6. The upper portion of the water draw assembly 100 passes through the drain plate 62 and is located above the drain plate 62. The drive member 5 is disposed on the outer bottom wall of the housing 6, and an output shaft 51 extends into the housing 6 and connects to the water draw assembly 100.

[0035] In this embodiment, a mounting opening 63 is defined in the bottom wall of the housing 6. A portion of the upper end surface of the driver 5 extends upward to form a boss 52 that fits within the mounting opening 63. The output shaft 51 is located in the center of the boss 52, and the bottom of the water-drawing assembly 100 is supported on the boss 52. The driver 5 is a motor, and the upper end of the motor is utilized to support the water-drawing assembly 100. This simplifies the structure of the bottom wall of the housing 6, facilitating production and assembly. It also prevents the uneven bottom wall of the housing 6 from adversely affecting the water return effect.

[0036] Specifically, the upper surface of the boss 52 is provided with an upwardly extending positioning block 521 near the edge. The bottom wall of the water-drawing assembly 100 abuts against this positioning block 521, thereby constraining the gap 60 between the bottom wall of the water-drawing assembly 100 and the inner bottom wall of the housing 6. The positioning block 521 partially extends beyond the edge of the boss 52. The periphery of the mounting opening 63 is provided with a positioning notch 631 that mates with the outer edge of the corresponding positioning block 521 to circumferentially limit the position of the driver 5. This structure utilizes the positioning block 521 to circumferentially limit the position of the motor against the bottom wall of the housing 6, facilitating assembly.

[0037] The upper surface of the boss 52 is also provided with an upwardly extending positioning post 522, and the bottom wall of the water-drawing assembly 100 is provided with a positioning sleeve 101 that can be plugged into and connected to the positioning post 522. There are three sets of cooperating structures of the positioning post 522 and the positioning sleeve 101. On the basis of the positioning block 521 supporting the water-drawing assembly 100, the positioning post 522 and the positioning sleeve 101 not only further support the water-drawing assembly 100, but also limit the water-drawing assembly 100 in the circumferential direction, facilitating assembly. The inner bottom wall of the housing 6 is provided with a threaded post 64 located outside the mounting opening 63 and extending upward. The outer peripheral wall of the water-drawing assembly 100 is provided with a connecting portion 102 that can abut against the threaded post 64. The connecting portion 102 has a mounting hole 103 corresponding to the arrangement of the threaded post 64. After being supported by the positioning block 521 and limited by the positioning column 522 and the positioning sleeve 101, the mounting hole 103 corresponds exactly to the threaded column 64, and the two can be locked by screws, thereby improving the reliability of the assembly of the water drawing component 100.

[0038] To facilitate the locking connection between the driver 5 and the housing 6, the upper end surface of the driver 5, located outside the boss 52, rests against the outer bottom wall of the housing 6 and is screwed securely. A mounting plate 65 is provided on the inner bottom wall of the housing 6, surrounding the mounting opening 63. Screws pass through this mounting plate 65, the bottom wall of the housing 6, and the upper end surface of the driver 5, securing the three together. This structure enhances assembly reliability. When fully assembled, the inner bottom wall of the housing 6, the upper surface of the mounting plate 65, and the upper surface of the boss 52 remain roughly flush, ensuring smooth water return.

[0039] In this embodiment, the water-drawing assembly 100 comprises an upper impeller 1, a lower impeller 2, an upper housing 3, and a lower housing 4. The upper impeller 1 has a centrifugal impeller at its upper portion and an axial-flow impeller at its lower portion, while the lower impeller 2 is also a centrifugal impeller. The upper housing 3 comprises a longitudinally extending main body. A first accommodating cavity 31 is centrally located within the main body, housing the upper portion of the upper impeller 1. Two sides of the main body each have a flow channel connected to the first accommodating cavity 31. A spray hole 32, connected to the flow channel, is formed in the top wall of the upper housing 3. The upper housing 1 constitutes the aforementioned first water outlet component, namely, the bottom spray arm. The lower shell 4 is connected to the bottom of the upper shell 3. The upper part of the lower shell 4 has a second accommodating chamber 41 for installing the lower part of the upper impeller 1, and the side wall of the lower shell 4 is provided with a first water inlet 411 for supplying water into the second accommodating chamber 41; the lower part of the lower shell 4 has a third accommodating chamber 42 for installing the lower impeller 2, the second accommodating chamber 41 and the third accommodating chamber 42 are relatively independent, and the bottom wall of the lower shell 4 is provided with a second water inlet 421 for supplying water into the third accommodating chamber 42, and the side wall is provided with a water outlet 422 for supplying water from the third accommodating chamber 42.

[0040] The output shaft 51 of the driving member 5 passes through the bottom wall of the box body 6, the second water inlet 421, and the lower shell 4 from bottom to top, and extends into the first accommodating cavity 31 of the upper shell 3 and is connected to the lower impeller 2 and the upper impeller 1 respectively, for driving the upper impeller 1 and the lower impeller 2 to rotate.

[0041] The above structure constitutes an open dual-pump system, in which the second accommodating chamber 41, the first accommodating chamber 31 and the upper impeller 1 located in the upper part are used to supply water for bottom spraying, and the third accommodating chamber 42 and the lower impeller 2 located in the lower part are used to supply water for top and / or middle spraying. The same power source is used. Since the power of the two water flows is independently supplied by the corresponding pumps, the head and water flow of each water flow are increased, which is conducive to improving the cleaning effect.

[0042] In this embodiment, the bottom wall of the box body 6 is partially recessed to form a first accommodating groove 611 for installing the lower shell body 4. The water outlet 422 of the lower shell body 4 is connected to a water guide pipe 423 tangentially connected to the third accommodating chamber 42. A water outlet 6112 is provided on the side wall of the first accommodating groove 611 for fluid communication between the water guide pipe 423 and the second water outlet component b. A water supply pipe 7 is provided in the box body 6 for transporting water from the bottom upward to the second water outlet component b, and the lower end of the water supply pipe 7 is connected to the water outlet 6112.

[0043] When assembled, the distance between the outer wall of the lower shell 4 and the inner wall of the first accommodating groove 611 is 3 to 10 mm. This distance is mainly to prevent the accumulation of residues and ensure that small residues can be sucked away along the direction of water flow.

[0044] In the drain area 61, a second receiving groove 612, deeper than the first receiving groove 611, is provided on the bottom wall of the housing 6, adjacent to the first receiving groove 611. A slag collection basket 9 is provided on the drain plate 62. The lower portion of the slag collection basket 9 is located below the drain plate 62 and accommodated in the second receiving groove 612. A drain port 613 is provided at the bottom of the second receiving groove 612. A drain valve and a drain pump structure connected to the drain port 613 are provided on the outer bottom of the housing 6. The side of the first receiving groove 611 has an opening 6111 that communicates with the side of the second receiving groove 612. The first water inlet 411 of the pumping mechanism a is located above the opening 6111. A suction nozzle 40 is connected to the first water inlet 411, extending obliquely downward to the opening 6111. The second water inlet 421 is located adjacent to the opening 6111. With the above structure, the bottom of the second accommodating groove 612 is the lowest point of the drainage area 61, and the drain outlet 613 is set here, which is conducive to draining the residual water and avoiding the accumulation of water and the generation of bacteria; by setting the first accommodating groove 611 and the second accommodating groove 612, the water suction port position of the water pumping mechanism a is greatly lowered, and the bubbles are isolated above the water level, which can avoid the inhalation of bubbles and affecting the water flow head; during the cleaning process, the water flow is filtered by the slag collecting basket 9 and then transported to the water pumping mechanism a through the second accommodating groove 612. On the basis of assembling the water pumping mechanism a, the first accommodating groove 611 can also cooperate with the second accommodating groove 612 to play a diversion role and improve the return water effect.

[0045] In the present specification and claims, directional terms such as "front," "back," "up," "down," "left," "right," "side," "top," and "bottom" are used to describe various exemplary structural parts and components of the present invention. However, these terms are used herein for convenience of description only and are based on the exemplary orientations shown in the accompanying drawings. Because the embodiments disclosed herein can be arranged in various orientations, these directional terms are intended for illustrative purposes only and should not be construed as limiting. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0046] The "fluid communication" referred to in the present invention refers to the spatial position relationship between two components or parts (hereinafter collectively referred to as the first part and the second part), that is, the fluid (gas, liquid or a mixture of the two) can flow from the first part along the flow path or / and be transported to the second part. The first part and the second part can be directly connected, or the first part and the second part can be indirectly connected through at least one third party. The third party can be a fluid channel such as a pipe, channel, conduit, guide member, hole, groove, etc., or it can be a chamber allowing fluid to flow through, or a combination of the above.

Claims

1. A cleaning machine comprising a housing (6), a first water outlet component, a second water outlet component (b) and a water pumping mechanism (a), wherein the first water outlet component is arranged at the lower portion of the housing (6) for providing bottom spraying, the second water outlet component (b) is arranged at the upper portion of the housing (6) for providing upper spraying, and the water pumping mechanism (a) is arranged at the bottom of the housing (6) and for providing water pumping power for the first water outlet component and the second water outlet component (b), characterized in that: The water pump mechanism (a) comprises a water drawing assembly (100) capable of independently supplying water to the first water outlet component and the second water outlet component (b), and a driving member (5) for providing power to the water drawing assembly (100); the bottom of the water drawing assembly (100) is supported on the inner bottom wall of the box body (6) and a gap (60) is formed between the bottom wall and the inner bottom wall of the box body (6); the driving member (5) is arranged on the outer bottom wall of the box body (6), and the output shaft (51) extends into the box body (6) and is connected to the water drawing assembly (100); The water drawing component (100) comprises: An upper impeller (1), the upper portion of which is a centrifugal impeller and the lower portion of which is an axial flow impeller; The lower impeller (2) is a centrifugal impeller; An upper shell (3) having a first accommodating chamber (31) for mounting the upper portion of the upper impeller (1), a spray hole (32) in fluid communication with the first accommodating chamber (31) being formed on the top wall and / or side wall of the upper shell (3), and the upper shell (3) constituting the first water outlet component; and A lower shell (4) is connected to the lower part of the upper shell (3); the upper part of the lower shell (4) has a second accommodating chamber (41) for installing the lower part of the upper impeller (1); a first water inlet (411) for supplying water into the second accommodating chamber (41) is opened on the side wall of the lower shell (4); the lower part of the lower shell (4) has a third accommodating chamber (42) for installing the lower impeller (2); a second water inlet (421) for supplying water into the third accommodating chamber (42) is opened on the bottom wall of the lower shell (4); and a water outlet (422) for supplying water from the third accommodating chamber (42) is opened on the side wall of the lower shell (4); The bottom wall of the box body (6) is partially concave to form a first accommodating groove (611) for mounting the lower shell (4); a second accommodating groove (612) having a depth greater than that of the first accommodating groove (611) is provided on the bottom wall of the box body (6) beside the first accommodating groove (611); a side of the first accommodating groove (611) has an opening (6111) connected to a side of the second accommodating groove (612); and a suction nozzle (40) is connected to the first water inlet (411) and extends obliquely downward to the opening (6111).

2. The cleaning machine according to claim 1, characterized in that: The bottom wall of the box body (6) is provided with a mounting opening (63), the upper end surface of the driving member (5) partially extends upward to form a boss (52) that can be inserted into the mounting opening (63), the output shaft (51) is located in the center of the boss (52), and the bottom of the water-drawing assembly (100) is supported on the boss (52).

3. The cleaning machine according to claim 2, characterized in that: An upwardly extending positioning block (521) is provided on the upper surface of the boss (52) near the edge, and the bottom wall of the water-drawing assembly (100) abuts against the positioning block (521), thereby constraining a gap (60) between the bottom wall of the water-drawing assembly (100) and the inner bottom wall of the box body (6).

4. The cleaning machine according to claim 3, characterized in that: Part of the positioning block (521) extends beyond the edge of the boss (52), and a positioning notch (631) is provided on the periphery of the mounting opening (63) for cooperating with the outer edge of the corresponding positioning block (521) to circumferentially limit the driving member (5).

5. The cleaning machine according to claim 2, characterized in that: The upper surface of the boss (52) is further provided with a positioning column (522) extending upward, and the bottom wall of the water-drawing component (100) is provided with a positioning sleeve (101) that can be plugged and connected with the positioning column (522).

6. The cleaning machine according to claim 2, characterized in that: A threaded column (64) is provided on the inner bottom wall of the box body (6) and is located outside the mounting opening (63) and extends upward. A connecting portion (102) capable of resting against the threaded column (64) is provided on the outer peripheral wall of the water-drawing assembly (100). The connecting portion (102) is provided with a mounting hole (103) arranged corresponding to the threaded column (64).

7. The cleaning machine according to claim 2, characterized in that: The upper end surface of the driving member (5) located on the periphery of the boss (52) abuts against the outer bottom wall of the box body (6) and is locked with screws.

8. The cleaning machine according to claim 7, characterized in that: The inner bottom wall of the box body (6) is provided with a mounting plate (65) arranged around the periphery of the mounting opening (63), and screws pass through the mounting plate (65), the bottom wall of the box body (6), and the upper end surface of the driving member (5) to lock and connect the three.

9. The cleaning machine according to any one of claims 1 to 8, characterized in that: The bottom wall of the box body (6) is partially concave to form a first accommodating groove (611) for installing the lower shell (4); the water outlet (422) of the lower shell (4) is connected to a water conduit (423) tangentially connected to the third accommodating chamber (42); a water outlet (6112) is provided on the side wall of the first accommodating groove (611) for fluid communication between the water conduit (423) and the second water outlet component (b); in the assembled state, the distance between the outer peripheral wall of the lower shell (4) and the inner wall of the first accommodating groove (611) is 3 to 10 mm.

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