Cleaning machine

Abstract

The utility model relates to a cleaning machine which comprises a water tank, a water pump, a lower bowl basket, a lower spraying arm, an upper bowl basket and an upper spraying arm, a water distribution opening is formed in the top wall of the lower spraying arm, and the upper spraying arm is communicated with the water distribution opening through a water distribution pipeline. A control structure is arranged in the water distribution pipeline, wherein the control structure can conduct the water distribution pipeline in the state that the upper bowl basket is placed in the washing cavity and can cut off the water distribution pipeline in the state that the upper bowl basket is taken out of the washing cavity. After the upper bowl basket and the upper spraying arm are placed in the washing cavity, the control structure can conduct the water distribution pipeline to supply water to the upper spraying arm, and after the upper bowl basket and the upper spraying arm are taken out of the washing cavity, the control structure cuts off the water distribution pipeline to prevent water flow from ascending, so that the water flow sprays the lower bowl basket only through the lower spraying arm, and the water flow is prevented from flowing upwards. Therefore, the spraying mode can be selected according to the number of the tableware to be cleaned, and water is saved while the cleanliness is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dishwashers, in particular to a washing machine used for washing tableware, fruits and vegetables. Background Art

[0002] Most current sink-type dishwashers use a single-layer spray system. When the dishes are placed above the spray arm, the spray arm sprays water from bottom to top to wash the dishes. Since the washing water only has impact force in a limited direction, the bowl basket and dishes need to be placed close to the bottom of the washing chamber. When there are many dishes to be washed, the problem of insufficient cleanliness is inevitable.

[0003] In order to solve the above problems, the applicant's prior patent ZL 202010288585.7 "A double-layer spray system and a cleaning machine using the system" discloses a structure, wherein the double-layer spray system includes a first spray arm, an impeller assembly, and a second spray arm. The second spray arm is connected to the water collecting chamber fluid of the first spray arm through a water supply channel. A water outlet for water supply into the water supply channel is provided on the top wall of the first spray arm. A first space guide impeller capable of pressurizing the water entering the water supply channel is provided on the top of the first spray arm. The first space guide impeller is connected to the top of the impeller assembly and rotates synchronously therewith. When in use, the impeller assembly draws water from the water collecting chamber of the first spray arm, and the water flows through the upper part of the impeller assembly and then sprays out for lower-layer spraying; at the same time, the water in the water collecting chamber also enters the second spray arm above it through the output channel for upper-layer spraying, thereby realizing double-layer spraying.

[0004] Although the above scheme can increase the number and cleanliness of dishes washed by double-layer spraying, since the upper and lower spray arms can only operate at the same time, there is a problem of water waste when there are fewer dishes to be washed. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a washing machine which can select a spraying mode according to the number of dishes to be washed so as to improve the degree of cleanliness and save water at the same time, in view of the current status of the prior art.

[0006] The technical solution adopted by the utility model to solve the above technical problems is:

[0007] A cleaning machine, comprising:

[0008] A water tank having a washing chamber, wherein a concave water return area is provided at the bottom of the washing chamber;

[0009] A water pump is an open water pump, which is arranged in the water return area and is provided with a water inlet connected to the water return area and a water outlet for outputting water flow;

[0010] A lower bowl basket is placed at the lower part of the washing chamber;

[0011] A lower spray arm is provided in the washing chamber and is located above the water return area and below the lower bowl basket. The lower spray arm is connected to the water outlet of the open water pump and is used to spray the tableware in the lower bowl basket;

[0012] An upper bowl basket is placed on the upper part of the washing chamber;

[0013] An upper spray arm is provided in the washing chamber and at the bottom of the upper bowl basket, and is used for spraying the tableware in the upper bowl basket;

[0014] A water diversion port is formed on the top wall of the lower spray arm, and the upper spray arm is connected to the water diversion port through a water diversion pipe. The water diversion pipe is provided with a control structure that can conduct the water diversion pipe when the upper bowl basket is placed in the washing chamber and cut off the water diversion pipe when the upper bowl basket is taken out of the washing chamber.

[0015] In the utility model, the bottom wall of the lower spray arm is provided with a first inlet for water flow to enter, and correspondingly, the top wall of the lower spray arm is provided with a water outlet for part of the water flow to be transported upward, the water outlet is connected to the water outlet, the water outlet is provided with a valve stem that can move up and down to open or close the lower end of the water outlet, the valve stem always keeps the tendency of moving upward to close the lower end of the water outlet, the upper spray arm is provided with a water guide that can be inserted into the water outlet from top to bottom to drive the valve stem to move downward to open the lower end of the water outlet and connect with the upper spray arm, the water guide and the valve stem together constitute the control structure. The above structure is convenient for realizing the connection of the water outlet as the upper bowl basket and the upper spray arm under the upper bowl basket are put into or taken out of the washing chamber, and the connection or separation point is located at the top wall of the lower spray arm, so as to avoid the water flow filling the water outlet when the water outlet is separated and affecting the water flow state, thereby improving the lower spray effect.

[0016] Preferably, the top wall of the lower spray arm extends upward along the edge of the water diversion port to form a water diversion area with an inverted U-shaped cross section, the lower end of the water diversion pipe is connected to the top of the water diversion area, and the lower end of the valve stem is formed to be able to move up and down to constrain the water sealing member in the water diversion area, and the water sealing member moves upward with the valve stem to close the lower end of the water diversion pipe, and moves downward to open the lower end of the water diversion pipe. The above structure facilitates the connection of the water diversion pipe as the upper bowl basket and the upper spray arm under the upper bowl basket are placed in or taken out of the washing chamber.

[0017] Preferably, the lower spray arm is provided with an elastic member which is elastically compressed under the water sealing member and enables the water sealing member to maintain a tendency to move upward.

[0018] Preferably, the lower spray arm is provided with a water guide sleeve extending upward corresponding to the first inlet, the diameter of the water guide sleeve is smaller than the inner diameter of the first inlet and the bottom is constrained on the inner wall of the first inlet by the connecting arm, the lower part of the elastic member is sleeved on the outer periphery of the water guide sleeve and the lower end abuts against the connecting arm and the upper end abuts against the water sealing member. This structure facilitates the installation of the elastic member.

[0019] Further preferably, the cross section of the water sealing member is an inverted U-shaped structure, the lower end of the water sealing member is always sleeved on the outer periphery of the upper part of the water guide sleeve with a gap therebetween, and the upper end of the elastic member is hidden under the water sealing member and abuts against the inner top wall of the water sealing member. This structure is conducive to improving the telescopic stability of the elastic member, thereby improving the reliability of the up and down movement of the valve stem.

[0020] Preferably, the upper part of the valve stem forms a guide rod extending upward from the top wall of the water sealing member along the central axis of the water distribution pipe, and the cross section of the guide rod in a top view is a cross-shaped structure. The water flow transported from bottom to top in the water distribution pipe may form a vortex along the pipe wall, causing water flow energy loss. The guide rod structure is used to guide the water flow from bottom to top along the axial direction of the water distribution pipe, and destroy the vortex that may be formed in the radial direction of the water distribution pipe, so as to reduce the water flow energy loss.

[0021] Preferably, the bottom wall of the upper spray arm is provided with a second inlet arranged corresponding to the upper port of the water distribution pipeline, and the water guide is a plug-in sleeve extending downward from the edge of the second inlet, and the outer peripheral wall of the lower part of the plug-in sleeve is embedded with a sealing ring that can seal with the inner peripheral wall of the water distribution pipeline when it is plugged with the upper port of the water distribution pipeline. This structure facilitates the upper spray arm to be connected with the water distribution pipeline through the water guide, and when the upper spray arm is connected with the water distribution pipeline, the lower end of the plug-in sleeve presses against the upper end of the valve stem to move downward to a certain extent, thereby connecting the lower port of the water distribution pipeline with the lower spray arm.

[0022] In order to facilitate the restraint of the upper spray arm to the bottom of the upper bowl basket, the top wall of the upper spray arm is restrained to the bottom of the upper bowl basket through a connecting piece, the top of the connecting piece is restrained together with the bottom support bar of the upper bowl basket by a buckle, and the bottom of the connecting piece is rotatably connected to the top wall of the upper spray arm.

[0023] Preferably, the top wall of the upper spray arm is provided with a mounting opening, the lower part of the connecting piece is formed with a connecting sleeve which can be rotatably inserted into the mounting opening, the upper end of the connecting sleeve is a blind end, and the lower end of the connecting sleeve is provided with a clamping foot which can be clamped and limited with the inner top wall of the upper spray arm.

[0024] Compared with the prior art, the utility model has the following advantages: after the upper bowl basket and the upper spray arm of the utility model are placed in the washing chamber, the control structure can connect the water distribution pipe to supply water to the upper spray arm; after the upper bowl basket and the upper spray arm are taken out of the washing chamber, the control structure cuts off the water distribution pipe to prevent the water from flowing upward, so that the water flows only through the lower spray arm to spray the lower bowl basket, so that the spray mode can be selected according to the number of dishes to be washed, thereby improving the cleaning degree and saving water. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of the cleaning machine according to the embodiment of the utility model (double-layer spraying state);

[0026] Figure 2 This is a schematic diagram of the structure of the cleaning machine according to the embodiment of the utility model (single-layer spraying state);

[0027] Figure 3 for Figure 1 A cross-sectional view of

[0028] Figure 4 for Figure 3 A magnified view of part A;

[0029] Figure 5 for Figure 3 A magnified view of part B;

[0030] Figure 6 This is a diagram showing the coordination of the valve stem and the water distribution pipe in a single-layer spraying state according to an embodiment of the utility model. DETAILED DESCRIPTION

[0031] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0032] like Figures 1 to 6 As shown, the cleaning machine of this embodiment includes a water tank 1, a water pump 3, a lower bowl basket 10, a lower spray arm 100, an upper bowl basket 20, an upper spray arm 200, a slag collection basket 4, and a heating element 5.

[0033] The sink 1 has a washing chamber 11, and a concave water return area 12 is provided at the bottom of the washing chamber 11. The water pump 3 is an open water pump, which is arranged in the water return area 12 and is provided with a water inlet 31 connected to the water return area 12 and a water outlet 32 ​​for outputting the water supply flow. The lower bowl basket 10 is placed at the lower part of the washing chamber 11, and the bottom edge of the lower bowl basket 10 is provided with a support leg supported at the bottom of the washing chamber 11. The lower spray arm 100 is arranged in the washing chamber 11 and is located above the water return area 12 and below the lower bowl basket 10. The lower spray arm 100 is connected to the water outlet 32 ​​of the open water pump 3 and is used to spray the tableware in the lower bowl basket 10. The upper bowl basket 20 is placed at the upper part of the washing chamber 11. The upper bowl basket 20 can be supported by providing a support leg supported on the lower bowl basket 10 at the bottom edge or providing a support bar that can be placed on the upper part of the upper bowl basket 10 at the top edge. The upper spray arm 200 is disposed in the washing chamber 11 and located at the bottom of the upper basket 20 , and is used to spray the dishes in the upper basket 20 .

[0034] The water pump 3 of this embodiment has a water inlet 31 at the bottom and a water outlet 32 ​​at the top. A driving member 6 is provided below the water return area 21. The driving member 6 is a motor. The power output shaft 61 of the driving member 6 extends from bottom to top into the water return area 12 and is further connected to the water pump 3. The lower spray arm 100 is rotatably connected to the water outlet 32.

[0035] In this embodiment, a water diversion port 102 is formed on the top wall of the lower spray arm 100, and the upper spray arm 200 is connected to the water diversion port 102 via a water diversion pipe 300, and a control structure 7 is provided in the water diversion pipe 300, which can conduct the water diversion pipe 300 when the upper bowl basket 20 is placed in the washing chamber 11, and isolate the water diversion pipe 300 when the upper bowl basket 20 is taken out of the washing chamber 11.

[0036] Specifically, the bottom wall of the lower spray arm 100 is provided with a first inlet 101 for water flow to enter, and correspondingly, the top wall of the lower spray arm 100 is provided with a water diversion port 102 for conveying part of the water flow upward, and the water diversion port 102 is connected to the water diversion pipe 300, and the water diversion pipe 300 is provided with a valve stem 71 that can move up and down to open or close the lower port of the water diversion pipe 300, and the valve stem 71 always maintains a tendency to move upward and close the lower port of the water diversion pipe 300, and the upper spray arm 200 is provided with a water guide member 72 that can be inserted into the water diversion pipe 300 from top to bottom, thereby driving the valve stem 71 to move downward and then open the lower port of the water diversion pipe 300 and connect it with the upper spray arm 200, and the water guide member 72 and the valve stem 71 together constitute a control structure 7. The above structure facilitates the connection of the water distribution pipe 300 as the upper bowl basket 20 and the upper spray arm 200 under the upper bowl basket 20 are placed in or taken out of the washing chamber 11, and the connection or isolation point is located at the top wall of the lower spray arm 100, which prevents the water flow from filling the water distribution pipe 300 and affecting the water flow state when the water distribution pipe 300 is isolated, thereby improving the lower spraying effect.

[0037] The top wall of the lower spray arm 100 extends upward along the edge of the water diversion port 102 to form a water diversion area 103 with an inverted U-shaped cross section. The lower end of the water diversion pipe 300 is connected to the top of the water diversion area 103. The lower end of the valve stem 71 is formed to be able to move up and down to constrain the water sealing member 711 in the water diversion area 103. The water sealing member 711 moves upward with the valve stem 71 to close the lower end of the water diversion pipe 300, and moves downward to open the lower end of the water diversion pipe 300. The above structure facilitates the connection of the water diversion pipe 300 as the upper bowl basket 20 and the upper spray arm 200 under the upper bowl basket 20 are placed in or taken out of the washing chamber 11.

[0038] The lower spray arm 100 is provided with an elastic member 73 which is elastically compressed under the water sealing member 711 and keeps the water sealing member 711 moving upward. The lower spray arm 100 is provided with a water guide sleeve 104 extending upward corresponding to the first inlet 101. The diameter of the water guide sleeve 104 is smaller than the inner diameter of the first inlet 101 and the bottom is constrained on the inner wall of the first inlet 101 through the connecting arm 105. The elastic member 43 is a spring. The lower part of the spring is sleeved on the outer periphery of the water guide sleeve 104 and the lower end is against the connecting arm 105 and the upper end is against the water sealing member 711. This structure facilitates the installation of the elastic member 73.

[0039] The cross section of the water sealing member 711 is an inverted U-shaped structure, the lower end of the water sealing member 711 is always sleeved on the outer periphery of the upper part of the water guide sleeve 104 with a gap therebetween, the upper end of the elastic member 73 is hidden under the water sealing member 711 and the upper end is against the inner top wall of the water sealing member 711. This structure is conducive to improving the telescopic stability of the elastic member 73, thereby improving the reliability of the up and down movement of the valve stem 71.

[0040] The upper part of the valve stem 71 forms a guide rod 712 extending upward from the top wall of the water sealing member 711 along the central axis of the water distribution pipe 300. The cross section of the guide rod 712 in a top view is a cross-shaped structure. The water flow transported from bottom to top in the water distribution pipe 300 may form a vortex along the pipe wall, causing water flow energy loss. The guide rod 712 structure is used to guide the water flow from bottom to top along the axial direction of the water distribution pipe 300, and destroy the vortex that may be formed in the radial direction of the water distribution pipe 300, so as to reduce the water flow energy loss.

[0041] The bottom wall of the upper spray arm 200 is provided with a second inlet 210 arranged corresponding to the upper end of the water distribution pipe 300. The water guide 72 is a plug-in sleeve extending downward from the edge of the second inlet 210. The outer peripheral wall of the lower part of the plug-in sleeve is embedded with a sealing ring 721 that can be sealed with the inner peripheral wall of the water distribution pipe 300 when it is plugged with the upper end of the water distribution pipe 300. This structure facilitates the upper spray arm 200 to be connected with the water distribution pipe 300 through the water guide 72. When the upper spray arm 200 is connected with the water distribution pipe 300, the lower end of the plug-in sleeve presses against the upper end of the valve stem 71 to move downward to a certain extent, thereby connecting the lower end of the water distribution pipe 300 with the lower spray arm 100.

[0042] In order to facilitate the upper spray arm 200 to be restrained at the bottom of the upper bowl basket 20, the top wall of the upper spray arm 200 is restrained at the bottom of the upper bowl basket 20 by a connecting piece 8, the top of the connecting piece 8 is restrained by the bottom support bar of the upper bowl basket 20 by a buckle 81, and the bottom of the connecting piece 8 is rotatably connected to the top wall of the upper spray arm 200. The top wall of the upper spray arm 200 is provided with a mounting opening 202, and the lower part of the connecting piece 8 is formed with a connecting sleeve 82 that can be rotatably inserted into the mounting opening 202, the upper end of the connecting sleeve 82 is a blind end, and the lower end of the connecting sleeve 82 is provided with a clamping foot 821 that can be clamped and limited with the inner top wall of the upper spray arm 200.

[0043] The cleaning method of this embodiment is:

[0044] When washing a small amount of tableware, the upper basket 20 is taken out of the washing chamber 11, and the upper basket 20 simultaneously takes out the upper spray arm 200, and the tableware is placed in the lower basket 10. The control structure 7 blocks the water distribution pipe 300 so that water cannot be sent upward, and the open water pump 3 is operated to draw water in the return water area 12 into the lower spray arm 100, and the tableware in the lower basket 10 is sprayed and washed;

[0045] When washing a large amount of tableware, the upper bowl basket 20 is placed in the washing chamber 11, the upper spray arm 200 at the bottom of the upper bowl basket 20 is connected to the upper end of the water distribution pipe 300, the control structure 7 connects the water distribution pipe 300, and the open water pump 3 is operated to draw water in the return water area 12 into the lower spray arm 100, part of the water flows through the lower spray arm 100 to spray and wash the tableware in the lower bowl basket 10, and part of the water flows through the water distribution pipe 300 to the upper spray arm 200 to spray and wash the tableware in the upper bowl basket 20.

[0046] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A cleaning machine, comprising A water tank (1) has a washing chamber (11), wherein a concave water return area (12) is provided at the bottom of the washing chamber (11); The water pump (3) is an open water pump, which is arranged in the water return area (12) and is provided with a water inlet (31) connected to the water return area (12) and a water outlet (32) for outputting water flow; A lower bowl basket (10) is placed at the lower part of the washing chamber (11); A lower spray arm (100) is arranged in the washing chamber (11) and is located above the water return area (12) and below the lower bowl basket (10); the lower spray arm (100) is connected to the water outlet (32) of the open water pump (3) and is used to spray the tableware in the lower bowl basket (10); An upper bowl basket (20) is placed on the upper part of the washing chamber (11); An upper spray arm (200) is arranged in the washing chamber (11) and located at the bottom of the upper bowl basket (20), and is used to spray the tableware in the upper bowl basket (20); The invention is characterized in that: a water outlet (102) is formed on the top wall of the lower spray arm (100); the upper spray arm (200) is connected to the water outlet (102) via a water outlet pipe (30); and a control structure (7) is provided in the water outlet pipe (30) which can conduct the water outlet pipe (30) when the upper basket (20) is placed in the washing chamber (11) and cut off the water outlet pipe (30) when the upper basket (20) is taken out of the washing chamber (11).

2. The cleaning machine according to claim 1, characterized in that: The bottom wall of the lower spray arm (100) is provided with a first inlet (101) for water flow to enter. Correspondingly, the top wall of the lower spray arm (100) is provided with a water outlet (102) for part of the water flow to be transported upward. The water outlet (102) is connected to the water outlet pipe (30). The water outlet pipe (30) is provided with a valve stem (71) that can move up and down to open or close the lower end of the water outlet pipe (30). The valve stem (71) always maintains a tendency to move upward to close the lower end of the water outlet pipe (30). The upper spray arm (200) is provided with a water guide member (72) that can be inserted into the water outlet pipe (30) from top to bottom, thereby driving the valve stem (71) to move downward and thereby open the lower end of the water outlet pipe (30) and connect it with the upper spray arm (200). The water guide member (72) and the valve stem (71) together constitute the control structure (7).

3. The cleaning machine according to claim 2, characterized in that: The top wall of the lower spray arm (100) extends upward along the edge of the water diversion port (102) to form a water diversion area (103) with an inverted U-shaped cross section. The lower end of the water diversion pipe (30) is connected to the top of the water diversion area (103). The lower end of the valve stem (71) is formed to be able to move up and down to constrain a water sealing member (711) in the water diversion area (103). The water sealing member (711) moves upward with the valve stem (71) to close the lower end of the water diversion pipe (30), and moves downward to open the lower end of the water diversion pipe (30).

4. The cleaning machine according to claim 3, characterized in that: The lower spray arm (100) is provided with an elastic member (73) which is elastically compressed under the water sealing member (711) and enables the water sealing member (711) to maintain a tendency to move upward.

5. The cleaning machine according to claim 4, characterized in that: The lower spray arm (100) is provided with a water guide sleeve (104) extending upward corresponding to the first inlet (101); the diameter of the water guide sleeve (104) is smaller than the inner diameter of the first inlet (101), and the bottom is constrained on the inner wall of the first inlet (101) by a connecting arm (105); the lower part of the elastic member (73) is sleeved on the outer periphery of the water guide sleeve (104), and the lower end abuts against the connecting arm (105), and the upper end abuts against the water sealing member (711).

6. The cleaning machine according to claim 5, characterized in that: The cross section of the water sealing member (711) is an inverted U-shaped structure; the lower end of the water sealing member (711) is always sleeved on the outer periphery of the upper part of the water guide sleeve (104) with a gap between the two; the upper end of the elastic member (73) is hidden under the water sealing member (711) and the upper end abuts against the inner top wall of the water sealing member (711).

7. The cleaning machine according to claim 3, characterized in that: The upper part of the valve stem (71) forms a guide rod (712) extending upward from the top wall of the water sealing member (711) along the central axis of the water distribution pipe (30), and the cross section of the guide rod (712) in a plan view is a cross-shaped structure.

8. The cleaning machine according to claim 2, characterized in that: The bottom wall of the upper spray arm (200) is provided with a second inlet (210) arranged corresponding to the upper port of the water distribution pipe (30); the water guide (72) is a plug-in sleeve extending downward from the edge of the second inlet (210); the outer peripheral wall of the lower part of the plug-in sleeve is embedded with a sealing ring (721) capable of sealing with the inner peripheral wall of the water distribution pipe (30) when the plug-in sleeve is in a state of being plugged with the upper port of the water distribution pipe (30).

9. The cleaning machine according to any one of claims 1 to 8, characterized in that: The top wall of the upper spray arm (200) is constrained to the bottom of the upper basket (20) via a connecting piece (8); the top of the connecting piece (8) is constrained to the bottom support bar of the upper basket (20) via a buckle (81); and the bottom of the connecting piece (8) is rotatably connected to the top wall of the upper spray arm (200).

10. The cleaning machine according to claim 9, characterized in that: The top wall of the upper spray arm (200) is provided with a mounting opening (202), the lower part of the connecting piece (8) is formed with a connecting sleeve (82) which can be rotatably inserted into the mounting opening (202), and the lower end of the connecting sleeve (82) is provided with a clamping foot (821) which can be clamped and limited with the inner top wall of the upper spray arm (200).

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