Spray arm for cleaning machine, cleaning machine and cleaning control method for cleaning machine

Abstract

The present invention relates to a spray arm for a cleaning machine, a cleaning machine and a cleaning control method for the cleaning machine, wherein the spray arm comprises a main body, the main body has a flow channel inside, and the main body is provided with a water inlet and a plurality of spray holes which are all in fluid communication with the flow channel, so that the main body can rotate under the action of water flow; a partition is arranged inside the main body, and the interior of the main body is divided into a chamber for storing detergent and the above-mentioned flow channel, and the partition is provided with a through hole connecting the flow channel and the chamber; the main body is provided with a delivery port connected to the chamber, and the through hole is located on the moving path of the detergent when the main body rotates. The detergent delivery function is integrated into the spray arm, so that the spray arm not only has the function of spraying water, but also can spray the washing liquid at the same time, so that one arm has multiple uses, and the cost is reduced, and there is no need to set up an electrically controlled detergent delivery structure, and no electrical control maintenance is required.

Description

Technical Field

[0001] The present invention relates to the technical field of dishwashers capable of washing tableware, fruits and vegetables, and in particular to a spray arm for a washing machine, a washing machine and a washing control method for the washing machine. Background Art

[0002] Dishwashers have the advantages of good cleaning effect, ability to disinfect food, time-saving and labor-saving, etc., and therefore are being used more and more widely. At present, dishwashers mostly use dishwashing powder as detergent. A dispenser is configured on the door of the dishwasher. After the user opens the door, the dishwashing powder is placed in the dispenser. During the washing stage of the dishwasher, the dispenser timely puts the dishwashing powder into the washing chamber of the dishwasher, as shown in the "Door Structure and Dishwasher" disclosed in the Chinese invention patent with patent number CN202122838628.7 (Announcement number CN216364965U).

[0003] Most of the current detergent dispensing structures are as shown in the above-mentioned patents, which require an additional detergent dispensing structure to be specially provided on the door body, thereby increasing costs. In addition, in order to be able to deliver detergent to the washing chamber of the dishwasher, or to be able to dispense washing liquid at a specific cleaning sequence, the detergent dispensing structure is usually electrically controlled, which is costly and has a high failure rate.

[0004] Of course, you can also manually add detergent to the washing chamber, but this is more troublesome. Secondly, it is not convenient to add it in a specific cleaning sequence, which affects the cleaning effect. Moreover, if the detergent is solid, it may be discharged before it is completely dissolved if it is directly added to the washing chamber.

[0005] Therefore, the existing detergent delivery structure needs to be further improved. Summary of the invention

[0006] The first technical problem to be solved by the present invention is to provide a spray arm for a washing machine capable of dispensing detergent in view of the current status of the prior art.

[0007] The second technical problem to be solved by the present invention is to provide a cleaning machine using the above-mentioned spray arm in view of the current status of the prior art.

[0008] The third technical problem to be solved by the present invention is to provide a cleaning control method of the above-mentioned cleaning machine capable of spraying detergent in a specific cleaning sequence in view of the current status of the prior art.

[0009] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: a spray arm for a cleaning machine, comprising

[0010] A main body, wherein the main body has a flow channel inside, and is provided with a water inlet and a plurality of spray holes, all of which are in fluid communication with the flow channel, so that the main body can rotate under the action of water flow;

[0011] It is characterized by that it also includes

[0012] A partition is provided inside the main body to divide the interior of the main body into a chamber for storing detergent and the flow channel, and a through hole is provided on the partition to connect the flow channel and the chamber;

[0013] The main body is provided with a delivery port communicated with the chamber, and the through hole is located on the moving path of the detergent when the main body rotates.

[0014] In order to allow for more ways to dispense detergent, the main body is provided with an outlet that penetrates the wall thickness and is connected to the chamber. When the main body rotates, along the movement path of the detergent, the through hole is located between the delivery port and the outlet. In this way, the rotation speed of the main body can be adjusted by controlling the rotation speed of the water pump. When the rotation speed of the main body is low, the detergent can flow to the through hole, enter the flow channel, mix with water, and then be sprayed out from the spray hole of the main body; when the rotation speed of the main body is high, the detergent can flow to a farther position, namely the outlet, under the action of the centrifugal force of the main body, so that the detergent is directly dispensed into the washing chamber of the cleaning machine.

[0015] In order to close the through hole when the rotation speed of the main body is relatively high, so that the detergent flows out from the outlet, the main body is also provided with a baffle that can open or cover the through hole, and the flow channel is provided with a mounting shaft, the baffle is rotatably mounted on the mounting shaft, and the baffle always maintains a tendency to open the through hole under the action of the elastic member, and when the baffle opens the through hole, one of the walls of the baffle faces the direction of the water flow. When the rotation speed of the main body is relatively low, the through hole is in an open state, and the detergent enters the flow channel from the through hole; when the rotation speed of the main body is relatively high, the water flow impacts the baffle so that the baffle closes the through hole, and the detergent flows to the outlet under the action of a large centrifugal force and flows out.

[0016] In order to adjust the detergent delivery angle and delivery area, the outlet is in a strip shape, and a slider that can move along its length is slidably arranged in the outlet. The slider can be moved manually or driven by other driving mechanisms. By moving the slider, more detergent can be delivered to the area with serious dirt.

[0017] In order to prevent the slider from falling out of the outlet, the slider is in an I-shape and includes a sliding part, a first limiting part and a second limiting part. The sliding part is embedded in the outlet and can slide along the outlet. The sliding part has a first end extending into the chamber and a second end exposed outside the main body. The first limiting part is arranged at the first end of the sliding part and abuts against the wall surface of the chamber. The second limiting part is arranged at the second end of the sliding part and abuts against the outer wall surface of the main body. The first limiting part and the second limiting part play a role in limiting the slider from falling out of the outlet.

[0018] Preferably, the outlet is opened on the side wall of the main body, so that the detergent will be thrown to a position far away from the center of the cleaning machine, and then return to the center of the cleaning machine (the center is the water inlet) with the water flow. In this process, the detergent will be fully mixed with water, reducing the amount of detergent used and the detergent residue. The bottom wall of the chamber is partially inclined from bottom to top in a direction away from the water inlet, and the upper end of the inclined surface is connected to the outlet so as to transport the detergent to the outlet.

[0019] The inlet needs to be closed when no material is added to prevent detergent from being thrown out of the inlet during the rotation of the main body. The rotating cover at the inlet is provided with a cover plate that can open or close it; or, the inlet is detachably covered with a cover plate.

[0020] In order to be able to add a variety of detergents, the main body is strip-shaped, with a water collection cavity in the central part of the main body, and flow channels connected to the water collection cavity are respectively provided on both sides of the water collection cavity, and the flow channels extend along the length direction of the main body, the water inlet is provided on the bottom wall of the main body and is in fluid communication with the water collection cavity, the spray hole is provided on the top wall of the main body, there are two chambers and they are respectively arranged adjacent to the flow channels, both chambers extend along the length direction of the main body, and correspondingly, there are two delivery ports. In this way, different types of detergents can be delivered to different chambers as needed.

[0021] In order to clean the washing machine, the central part of the main body is provided with a water collecting chamber, the side of the water collecting chamber is provided with a flow channel connected to the water collecting chamber, the top wall of the main body is also provided with a feeding port connected to the water collecting chamber, and the water inlet is provided on the bottom wall of the main body and is in fluid communication with the water collecting chamber. According to common knowledge in the field of dishwashers, water is pumped into the spray arm by a water pump, so the water inlet of the spray arm is connected to the water pump, and the detergent entering the water collecting chamber from the feeding port can eventually enter the water pump, and the direct contact between the water pump blades and the detergent can be used to fully stir the detergent, reduce its viscosity, increase the dispersion of the detergent in the water, and spray it to a distance with the water flow, and at the same time, the detergent can clean the blades of the water pump and the inner wall of the spray arm, because there is often oil residue on the surface of the components.

[0022] In order to enable detergent to enter the water collecting chamber from the feeding port when needed, and be stored in the main body when not needed, a feeding chamber with an open top is opened on the top wall of the main body, and the feeding port is opened on the bottom wall of the feeding chamber. A cover body capable of opening or closing the feeding port is provided in the feeding chamber, and the lower part of the feeding chamber presents a first conical structure with a diameter gradually decreasing from top to bottom, the cover body is laterally arranged and can move up and down relative to the feeding chamber, and the lower part of the cover body presents a second conical structure with a diameter gradually decreasing from top to bottom, the first conical structure and the second conical structure are matched, and the maximum outer diameter of the cover body is smaller than the inner diameter of the upper part of the feeding chamber. The cover body can be driven to move up and down by a cavitation motor. When the cover body is pushed to the upper part of the feeding chamber by pressurized air, the detergent can leak from the gap between the outer peripheral edge of the cover body and the inner peripheral edge of the upper part of the feeding chamber to the lower part of the feeding chamber, and finally enter the water collecting chamber from the feeding port, and then enter the water pump; when the cavitation motor is not acting on the cover body, the cover body sticks to the bottom wall of the feeding chamber under the action of gravity, covering the feeding port.

[0023] In the above scheme, the outlet is in the shape of a strip, and a slider that can move along its length direction is slidably provided in the outlet; the central part of the main body has a water collecting chamber, and the side of the water collecting chamber has a flow channel connected to the water collecting chamber, and the top wall of the main body is also provided with a feeding port connected to the water collecting chamber, and the water inlet is opened on the bottom wall of the main body and is fluidically connected to the water collecting chamber.

[0024] The technical solution adopted by the present invention to solve the above second technical problem is: a cleaning machine, characterized in that it includes a box body and a spray arm, and the spray arm is rotatably arranged in the washing chamber of the box body.

[0025] The technical solution adopted by the present invention to solve the third technical problem is: a cleaning control method of a cleaning machine, characterized in that the cleaning machine includes a box, the spray arm and a water pump for pumping water into the flow channel, and the cleaning control method includes the following steps:

[0026] (1) Add detergent from the inlet;

[0027] (2) Move the slider so that the detergent is sprayed out from the outlet toward the dishes that are most dirty;

[0028] (3) Water is introduced, the water pump works at a speed of V1, the main body rotates, and the detergent reaches the outlet under the centrifugal force generated by the rotation of the main body, and is sprayed toward the tableware with a greater degree of dirtiness. At this time, the detergent is not mixed with water and has a higher purity. At this time, the through hole is in a closed state;

[0029] (4) The water pump stops working, and the detergent soaks the dirty dishes so that the detergent dissolves the dirt and is subsequently washed away by water;

[0030] (5) The water pump resumes operation at a speed of V2, where V2 < V1. At this time, the baffle closes the through-hole under the action of the water flow, but the detergent cannot reach the outlet under the action of the centrifugal force generated during the rotation of the main body. At this time, the water ejected from the spray arm is clean water, which is used to rinse and wash the tableware;

[0031] (6) The water pump stops working, drains the water, and then refills with water;

[0032] (7) The water pump resumes operation at a speed of V3, where V3 < V2. Due to the relatively small water flow intensity, the through-hole is in an open state. The detergent reaches the through-hole under the action of the centrifugal force generated during the rotation of the main body, flows into the flow channel, mixes with water, and is sprayed from the spray holes into the washing cavity to clean the tableware; Since the tableware has been washed with detergent once, the detergent solution can meet the cleaning requirements at this time, reducing the amount of detergent used;

[0033] (8) The speed of the water pump is increased to V2, and the spray arm sprays clean water to rinse and wash the tableware;

[0034] (9) The water pump stops working and drains the water.

[0035] The oil stains washed off the tableware may adhere to the washing cavity and the water pump. Therefore, to clean the oil stains in the washing cavity and the water pump, the cleaning control method of the cleaning machine further includes the following steps:

[0036] (10) Put detergent into the feeding port;

[0037] (11) Fill with water, the water pump works at a speed of V2, and the water dissolved with detergent is sprayed from the spray holes for cleaning; The detergent enters the water pump from the water collecting cavity through the water inlet. The impeller of the water pump rotates to fully dissolve the detergent. While cleaning the water pump, the detergent solution enters the washing cavity to clean the washing cavity as well;

[0038] (12) Drain the water and the operation ends.

[0039] Compared with the prior art, the advantages of the present invention are:

[0040] 1. The present invention provides a chamber on the spray arm for dispensing detergent. When the spray arm rotates, under the action of centrifugal force, the detergent can flow out from the through-hole into the flow channel, dissolve in water, and be sprayed out from the spray holes together with water to clean the tableware; The present invention integrates the detergent dispensing function on the spray arm, enabling the spray arm not only to spray water but also to spray the washing liquid at the same time, achieving multiple functions with one arm, reducing costs, eliminating the need for an electrically controlled detergent dispensing structure, and avoiding the need for electrical control maintenance;

[0041] 2. The present invention controls the rotation speed of the water pump to adjust the rotation speed of the main body, so that at a specific cleaning sequence, the detergent flows out directly from the outlet, or flows out from the spray hole after being dissolved in water, or is not sprayed out in the spray arm. In this way, centrifugal force is used to achieve various combinations such as adding different detergents at different stages, or adding detergents at different positions at different stages, so as to meet cleaning needs without the need for complex electronic control logic and components. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic structural diagram of a spray arm according to an embodiment of the present invention;

[0043] Figure 2 for Figure 1 Schematic diagram of the local structure;

[0044] Figure 3 for Figure 1 Cross-sectional view (cut from the exit);

[0045] Figure 4 for Figure 3 A magnified image of point A;

[0046] Figure 5 for Figure 4 A schematic diagram of the structure of the slider in FIG.

[0047] Figure 6 for Figure 1 Cross-sectional view (cut from the launch port);

[0048] Figure 7 for Figure 1 Cross-sectional view (cut from the feeding port). DETAILED DESCRIPTION

[0049] The present invention is further described in detail below with reference to the accompanying drawings.

[0050] like Figures 1 to 7 As shown, the cleaning machine of this preferred embodiment includes a box body and a spray arm A. The box body has a washing cavity, and the spray arm is rotatably arranged in the washing cavity of the box body.

[0051] The spray arm A includes a main body 1, on which a water inlet 12 and a plurality of spray holes 13 are provided. In this embodiment, the main body 1 is hollow inside, and a partition 5 is provided inside the main body 1 to divide the inside of the main body 1 into a flow channel 15 for water to flow through and a chamber 16 for storing detergent. The water inlet 12 and the spray holes 13 are both fluidically connected to the flow channel 15, so that the main body 1 can rotate under the action of water flow. The ability of the main body 1 to rotate under the action of water flow is a prior art and will not be described in detail here.

[0052] The top wall of the main body 1 is provided with a delivery port 17 connected to the chamber 16, the partition 5 is provided with a through hole 18 connecting the flow channel 15 and the chamber 16, the delivery port 17 is arranged near the water inlet 12, and the through hole 18 is located on the moving path of the detergent when the main body 1 rotates.

[0053] The side wall of the main body 1 is also provided with an outlet 19 that penetrates the wall thickness and is connected to the chamber 16. The bottom wall of the chamber 16 partially forms an inclined surface 161 that is inclined from bottom to top in a direction away from the water inlet 12. The upper end of the inclined surface 161 is connected to the outlet 19. When the main body 1 rotates, along the movement path of the detergent, the through hole 18 is located between the delivery port 17 and the outlet 19.

[0054] like Figure 2 As shown, the main body 1 is further provided with a shield 2 capable of opening or shielding the through hole 18, and the flow channel 15 is provided with a mounting shaft 21, on which the shield 2 is rotatably mounted, and the shield 2 always maintains a tendency to open the through hole 18 under the action of the elastic member 22, and when the shield 2 opens the through hole 18, one of the walls of the shield 2 faces the direction of the water flow. The elastic member may be a torsion spring.

[0055] The cleaning machine further includes a water pump for pumping water into the flow channel 15. The water pump may adopt an existing structure. The water pump pumping water into the flow channel 15 is also an existing technology and will not be described in detail here. When the cleaning machine is working, the spray arm rotates, and the water flow is pumped into the flow channel 15 of the main body 1 from the water inlet 12 by the water pump located at the bottom of the box, forming a high pressure inside the main body 1, and is sprayed outward along the spray hole 13 set on the main body 1, driving the spray arm to rotate clockwise. In addition, the rotation speed of the main body 1 can be adjusted by controlling the rotation speed of the water pump. When the rotation speed of the main body 1 is relatively low, the through hole 18 is in an open state, and the detergent can flow to the through hole 18 under the action of the centrifugal force of the main body 1, enter the flow channel 15, and after mixing with water, it is sprayed out from the spray hole 13 of the main body 1; when the rotation speed of the main body 1 is relatively high, the water flow impacts the baffle 2 so that the baffle 2 closes the through hole 18, and the detergent can flow to a farther position, namely the outlet 19, under the action of the centrifugal force of the main body 1, so that the detergent is directly put into the washing chamber of the cleaning machine.

[0056] like Figure 1 , 3As shown in Figures 4 and 5, in this embodiment, the outlet 19 is in a strip shape, and a slider 3 that can move along its length direction is slidably provided in the outlet 19. The slider 3 is in an I-shape, and includes a sliding portion 31, a first limiting portion 32, and a second limiting portion 33. The sliding portion 31 is embedded in the outlet 19 and can slide along the outlet 19. The sliding portion 31 has a first end extending into the chamber 16 and a second end exposed outside the main body 1. The first limiting portion 32 is provided at the first end of the sliding portion 31 and abuts against the wall surface of the chamber 16, and the second limiting portion 33 is provided at the second end of the sliding portion 31 and abuts against the outer wall surface of the main body 1. By moving the slider 3, more detergent can be put into the area where the dirt is serious. Of course, the slider 3 may not be provided; one slider 3 may be provided, and if the length of the outlet 19 is long, multiple sliders 3 may be provided at intervals along the extension direction of the outlet 19, so that multiple water columns can be sprayed to clean different dirty areas in a targeted manner.

[0057] In this embodiment, a convex portion 191 is disposed on the outer wall of the main body 1 . The wall surface of the convex portion 191 is spherical. The outlet 19 is provided on the convex portion 191 . Therefore, the outlet 19 is in an arc shape that is arched away from the inside of the main body 1 .

[0058] In this embodiment, the rotating cover at the delivery port 17 is provided with a cover plate 4 that can be opened or closed. When no materials are added, the delivery port 17 needs to be closed to prevent the detergent from being thrown out of the delivery port 17 during the rotation of the main body 1. Of course, the cover plate 4 can also be detachably covered at the delivery port 17, such as by a detachable manner such as a snap connection or a screw connection.

[0059] like Figure 2 As shown, the main body 1 is in a strip shape, and a water collecting chamber 10 is provided in the central part of the main body 1. Both sides of the water collecting chamber 10 respectively have flow channels 15 connected to the water collecting chamber 10, and the flow channels 15 extend along the length direction of the main body 1. The water inlet 12 is provided on the bottom wall of the main body 1 and is in fluid communication with the water collecting chamber 10. The spray hole 13 is provided on the top wall of the main body 1. There are two chambers 16 and they are respectively arranged adjacent to the flow channels 15. Both chambers 16 extend along the length direction of the main body 1. Correspondingly, there are two delivery ports 17. In this way, different types of detergents can be delivered to different chambers 16 as needed.

[0060] like Figure 7 As shown, a feeding chamber 14 with an open top is provided on the top wall of the main body 1, and the opening of the feeding chamber 14 is covered with a lid 6 that can open or close the opening. The lid 6 can be rotatably set at the opening of the feeding chamber 14, and can also be detachably set at the opening of the feeding chamber 14.

[0061] A feeding port 141 is provided on the bottom wall of the feeding chamber 14, and the feeding port 141 is connected to the water collecting chamber 10. A cover body 7 is provided in the feeding chamber 14 to open or close the feeding port 141. In this embodiment, the lower part of the feeding chamber 14 is a first cone-shaped structure 142 with a gradually decreasing diameter from top to bottom, the cover body 7 is arranged horizontally and can move up and down relative to the feeding chamber 14, and the lower part of the cover body 7 is a second cone-shaped structure 71 with a gradually decreasing diameter from top to bottom. The first cone structure 142 and the second cone structure 71 are matched, and the maximum outer diameter of the cover body 7 is smaller than the inner diameter of the upper part of the feeding chamber 14.

[0062] According to common knowledge in the field of dishwashers, water is pumped into the spray arm through a water pump, so the water inlet 12 of the spray arm is connected to the water pump, and the detergent entering the water collecting chamber 10 from the feeding port 141 can eventually enter the water pump. The direct contact between the impeller blades of the water pump and the detergent can be utilized to fully stir the detergent, reduce its viscosity, increase the dispersion of the detergent in the water, and spray it to a distant place together with the water flow. At the same time, the detergent can clean the blades of the water pump and the inner wall of the spray arm because there is often oil residue on the surface of the components.

[0063] The cover 7 can be driven up and down by a cavitation motor. When the cover 7 is pushed to the upper part of the feeding chamber 14 by pressurized air, the detergent can leak from the gap between the outer peripheral edge of the cover 7 and the inner peripheral edge of the upper part of the feeding chamber 14 to the lower part of the feeding chamber 14, and finally enter the water collection chamber 10 from the feeding port 141, and then enter the water pump; when the cavitation motor does not act on the cover 7, the cover 7 is attached to the bottom wall of the feeding chamber 14 under the action of gravity, covering the feeding port 141. Of course, the cover 7 can also be driven by other driving methods.

[0064] The detergent of this embodiment may be in powder or liquid form.

[0065] The cleaning control method of the cleaning machine of this embodiment includes the following steps:

[0066] (1) Add detergent from the inlet 17;

[0067] (2) Move the slider 3 so that the outlet 19 sprays detergent toward the dishes that are most soiled;

[0068] (3) Water is introduced, the water pump works at a speed of V1, the main body 1 rotates, and the detergent reaches the outlet 19 under the centrifugal force generated by the rotation of the main body 1, and the detergent is sprayed toward the tableware with a greater degree of dirtiness. At this time, the detergent is not mixed with water and has a higher purity. At this time, the through hole 18 is in a closed state;

[0069] (4) The water pump stops working, and the detergent soaks the dirty dishes so that the detergent dissolves the dirt and is subsequently washed away by water;

[0070] (5) The water pump resumes operation at a speed of V2, where V2 < V1. At this time, the baffle 2 closes the through-hole 18 under the action of the water flow. However, due to the centrifugal force generated when the main body 1 rotates, the detergent cannot reach the outlet 19. At this time, the water ejected from the spray arm is clean water, which is used to rinse the tableware.

[0071] (6) The water pump stops working, drains the water, and then refills the water.

[0072] (7) The water pump resumes operation at a speed of V3, where V3 < V2. Due to the relatively low water flow intensity, the through-hole 18 is in the open state. Under the action of the centrifugal force generated when the main body 1 rotates, the detergent reaches the through-hole 18 and flows into the flow channel 15. After mixing with water, it is sprayed from the spray holes 13 into the washing chamber to clean the tableware. Since the tableware has been washed with detergent once, the detergent solution can meet the cleaning requirements at this time, reducing the amount of detergent used.

[0073] (8) The speed of the water pump is increased to V2, and the spray arm sprays clean water to rinse the tableware.

[0074] (9) The water pump stops working and drains the water.

[0075] (10) Detergent is put in from the feeding port 141.

[0076] (11) Water is filled in, the water pump works at a speed of V2, and the water dissolved with detergent is sprayed from the spray holes 13 for cleaning. The oil stains washed off from the tableware may adhere to the washing chamber and the water pump. Therefore, it is necessary to clean the oil stains in the washing chamber and the water pump. The detergent enters the water pump from the water collection chamber through the water inlet. The impeller of the water pump rotates to fully dissolve the detergent. While cleaning the water pump, the detergent solution enters the washing chamber to clean the washing chamber as well.

[0077] (12) Drain the water and the operation ends.

[0078] Steps (10) to (12) above can be determined whether to execute according to needs.

[0079] The speed adjustment of the main body 1 can be carried out in an existing manner, which will not be elaborated here.

[0080] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only for illustration 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.

[0081] The "fluid connection" referred to in the present invention refers to the spatial position relationship between two parts or parts (hereinafter collectively referred to as the first part and the second part respectively), 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, duct, 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 spray arm for a cleaning machine, comprising A main body (1), wherein the main body (1) has a flow channel (15) inside, and the main body (1) is provided with a water inlet (12) and a plurality of spray holes (13) which are both in fluid communication with the flow channel (15), so that the main body (1) can rotate under the action of water flow; It is characterized in that Also includes A partition (5) is arranged inside the main body (1) to divide the interior of the main body (1) into a chamber (16) for storing detergent and the flow channel (15), and a through hole (18) is provided on the partition (5) to connect the flow channel (15) and the chamber (16); The main body (1) is provided with a delivery port (17) which is connected to the chamber (16); the through hole (18) is located on the movement path of the detergent when the main body (1) rotates; The main body (1) is also provided with an outlet (19) penetrating through the wall thickness thereof and communicating with the chamber (16); along the movement path of the detergent when the main body (1) rotates, the through hole (18) is located between the delivery port (17) and the outlet (19); The outlet (19) is in the shape of a strip, and a slider (3) is slidably provided in the outlet (19) and can move along its length direction; The sliding block (3) is in an I-shape and comprises a sliding portion (31), a first limiting portion (32) and a second limiting portion (33); the sliding portion (31) is embedded in the outlet (19) and can slide along the outlet (19); the sliding portion (31) has a first end extending into the chamber (16) and a second end exposed outside the main body (1); the first limiting portion (32) is arranged at the first end of the sliding portion (31) and abuts against the wall surface of the chamber (16); the second limiting portion (33) is arranged at the second end of the sliding portion (31) and abuts against the outer wall surface of the main body (1).

2. The spray arm according to claim 1, characterized in that: The main body (1) is also provided with a shield (2) capable of opening or shielding the through hole (18); a mounting shaft (21) is provided in the flow channel (15); the shield (2) is rotatably mounted on the mounting shaft (21); and the shield (2) always maintains a tendency to open the through hole (18) under the action of an elastic member (22); when the shield (2) opens the through hole (18), one of the wall surfaces of the shield (2) faces the direction of the water flow.

3. The spray arm according to claim 1, characterized in that: The outlet (19) is provided on the side wall of the main body (1), and a portion of the bottom wall of the chamber (16) is formed into a slope that slopes upward from bottom to top in a direction away from the water inlet (12), and the upper end of the slope is connected to the outlet (19).

4. The spray arm according to any one of claims 1 to 3, characterized in that: The delivery port (17) is provided with a cover plate (4) that can be opened or closed by a rotating cover; or the delivery port (17) is provided with a cover plate (4) that can be detachably covered.

5. The spray arm according to any one of claims 1 to 3, characterized in that: The main body (1) is strip-shaped, and has a water collecting chamber (10) in the central part of the main body (1). Both sides of the water collecting chamber (10) have flow channels (15) connected to the water collecting chamber (10). The water inlet (12) is provided on the bottom wall of the main body (1) and is fluidically connected to the water collecting chamber (10). The spray hole (13) is provided on the top wall of the main body (1). There are two chambers (16), which are respectively arranged adjacent to the flow channels (15). Correspondingly, there are two delivery ports (17).

6. The spray arm according to any one of claims 1 to 3, characterized in that: The main body (1) has a water collecting chamber (10) in the central part, and a flow channel (15) connected to the water collecting chamber (10) is provided on the side of the water collecting chamber (10). A feeding port (141) connected to the water collecting chamber (10) is also provided on the top wall of the main body (1), and the water inlet (12) is provided on the bottom wall of the main body (1) and is fluidically connected to the water collecting chamber (10).

7. The spray arm according to claim 6, characterized in that: A feeding chamber (14) with an open top is provided on the top wall of the main body (1), the feeding port (141) is provided on the bottom wall of the feeding chamber (14), a cover body (7) capable of opening or closing the feeding port (141) is provided in the feeding chamber (14), the lower part of the feeding chamber (14) presents a first conical structure (142) with a diameter gradually decreasing from top to bottom, the cover body (7) is arranged transversely and can move up and down relative to the feeding chamber (14), the lower part of the cover body (7) presents a second conical structure (71) with a diameter gradually decreasing from top to bottom, the first conical structure (142) and the second conical structure (71) are matched, and the maximum outer diameter of the cover body (7) is smaller than the inner diameter of the upper part of the feeding chamber (14).

8. The spray arm according to claim 2, characterized in that: The outlet (19) is in the shape of a strip, and a slider (3) is slidably provided in the outlet (19) and can move along its length direction; the central part of the main body (1) has a water collecting chamber (10), and the side of the water collecting chamber (10) has a flow channel (15) connected to the water collecting chamber (10); the top wall of the main body (1) is also provided with a feeding port (141) connected to the water collecting chamber (10); the water inlet (12) is provided on the bottom wall of the main body (1) and is fluidically connected to the water collecting chamber (10).

9. A cleaning machine, characterized in that: It comprises a box body and a spray arm as claimed in any one of claims 1 to 7, wherein the spray arm is rotatably arranged in a washing chamber of the box body.

10. A cleaning control method for a cleaning machine, characterized in that: The cleaning machine comprises a housing, a spray arm as claimed in claim 8 and a water pump for pumping water into the flow channel (15), and the cleaning control method comprises the following steps: (1) Add detergent from the inlet (17); (2) moving the slider (3) so that the outlet (19) sprays detergent toward the dishes that are most soiled; (3) Water is introduced, the water pump is operated, the speed is V1, the main body (1) rotates, and the detergent reaches the outlet (19) under the action of the centrifugal force generated by the rotation of the main body (1), and the detergent is sprayed toward the tableware with a greater degree of dirtiness. At this time, the through hole (18) is in a closed state; (4) The water pump stops working and the detergent soaks the dirty dishes; (5) The water pump starts working again, with a rotation speed of V2, V2 < V1. At this time, the shutter (2) closes the through hole (18) under the action of the water flow, but the detergent cannot reach the outlet (19) due to the centrifugal force generated by the rotation of the main body (1). At this time, clean water is sprayed from the spray arm to rinse and wash the tableware; (6) The water pump stops working and water is replenished after drainage; (7) The water pump starts working again, with a rotation speed of V3, V3 < V2. Since the water flow intensity is small, the through hole (18) is in an open state. The detergent reaches the through hole (18) under the action of the centrifugal force generated by the rotation of the main body (1), flows into the flow channel (15), mixes with the water, and is then sprayed into the washing chamber from the spray hole (13) to clean the dishes. (8) The water pump speed is increased to V2, and the spray arm sprays clean water to rinse and wash the tableware; (9) Stop the water pump and drain the water.

11. The cleaning control method according to claim 10, characterized in that: The following steps are also included: (10) Adding detergent from the feeding port (141); (11) Water is introduced, the water pump is operated, the speed is V2, and water containing detergent is sprayed out from the spray hole (13) for cleaning; (12) Drain water and the operation ends.

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