Cleaning machine and cleaning method

Abstract

The invention relates to a cleaning machine and a cleaning method, the cleaning machine comprises a box body and a spraying arm, and the cleaning machine further comprises a positioning rod with the lower end restrained on the bottom wall of the box body and the upper end penetrating through the spraying arm to be located on the spraying arm; the positioning cap is arranged at the top of the positioning rod, and a connecting structure capable of locking and positioning the positioning cap and the positioning rod or rotating by a certain angle is arranged between the positioning cap and the positioning rod; the damping piece comprises a first part restrained on the spraying arm and a second part restrained on the positioning cap, and the first part rotates along with the spraying arm and is connected with the second part in a matched mode to form damping; and the adjusting rod is arranged on the positioning cap, is connected with the second part of the damping piece, and is used for adjusting the position of the damping area formed by the first part and the second part on the rotating path of the spraying arm through circumferential rotation. Before cleaning, tableware needing to be cleaned intensively is placed in a specific area, and during cleaning, the rotating speed is reduced every time the spraying arm rotates to the specific area, so that the spraying time of the area is prolonged, and the cleaning strength of the specific area is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of dishwashers, and specifically refers to a cleaning machine for cleaning tableware. Background Art

[0002] Generally, a dishwasher is provided with a spray arm that sprays a water column to wash tableware or fruits and vegetables. For example, the Chinese patent "Dishwasher Spray Arm Seat, Dishwasher Spray Arm Device and Dishwasher" (Application No.: CN201520531714.5) with the authorization announcement number CN204813755U, the Chinese patent "Spray Arm of a Cleaning Machine" (Application No.: CN201920258610.X) with the authorization announcement number CN209932651U, etc. have all disclosed corresponding spray arm structures.

[0003] The Chinese utility model patent "A Dishwasher Sprayer and a Dishwasher" (Application No.: CN201520047405.0) with the authorization announcement number CN204445748U discloses a structure. The sprayer includes a water storage cavity, a spray surface, and a mounting surface. A plurality of spray holes communicating with the water storage cavity are provided on the spray surface, a water inlet is provided on the mounting surface, a spray head is mounted on the spray surface, at least two spray head spray holes are provided on the spray head, and a water channel communicating with the water storage cavity is provided inside the spray head. The spray head spray holes communicate with the water channel. While the sprayer rotates and sprays, the spray head on the sprayer also sprays simultaneously. Since the spray head has at least two spray head spray holes, the effective spraying area is increased and the spraying dead angle is reduced.

[0004] The sprayer with the above structure is beneficial to expanding the spraying range and reducing the cleaning dead angle. However, it is impossible to control the rotation speed of the spray arm or strengthen the spraying intensity for a specific area. In life, users may need to clean special utensils such as pots that are more difficult to clean together with tableware. Such utensils require an extended spraying time, which results in the existing structure being unable to meet the needs of consumers. Summary of the Invention

[0005] The first technical problem to be solved by the present invention is to provide a cleaning machine that can automatically adjust the rotation speed of the spray arm in a specific area to meet the need for enhanced cleaning in the specific area according to the current situation of the prior art.

[0006] The second technical problem to be solved by the present invention is to provide a cleaning method for the above cleaning machine according to the current situation of the prior art.

[0007] The technical solution adopted by the present invention to solve at least one of the above technical problems is as follows:

[0008] A cleaning machine includes a box body and a spray arm. The spray arm is rotatably arranged in the box body and is disposed near the bottom of the box body. It further includes:

[0009] The positioning rod is constrained at the lower end to the bottom of the box body, and its upper end passes through the spray arm and is located above the spray arm.

[0010] The positioning cap is arranged at the top of the positioning rod, and a connection structure that can lock and position or rotate through a certain angle between the positioning cap and the positioning rod is provided.

[0011] The damping member includes a first part constrained on the spray arm and a second part constrained on the positioning cap. The first part rotates with the spray arm and cooperates with the second part to form damping.

[0012] The adjusting rod is arranged on the positioning cap and connected to the second part of the damping member, and is used to adjust the position of the damping area formed by the first part and the second part on the rotation path of the spray arm through circumferential rotation.

[0013] Before the cleaning program runs, the tableware that needs to be intensively cleaned is placed in a specific area. When the cleaning program runs, each time the spray arm rotates to the specific area, the rotation speed will slow down, so as to extend the spraying time in this area and improve the cleaning intensity in the specific area.

[0014] Preferably, the first part is a rack in the shape of an arc segment, which is arranged corresponding to the outer periphery of the second part. The second part is a gear that can rotate with the positioning cap, and the rack rotates with the spray arm and intermittently meshes and rubs with the gear. Further preferably, the first part is two groups and is symmetrically arranged on the spray arm. With the above structure, it is convenient to generate an intensively cleaned area locally on the rotation path of the spray arm as the spray arm rotates. Setting two groups of the first part can improve the rotation stability of the spray arm in the damping deceleration state and avoid jamming.

[0015] Preferably, the central part of the positioning cap is connected to the top of the positioning rod, the adjusting rod is offset relative to the center of the positioning cap on the positioning cap, and the rotation of the adjusting rod is used to drive the positioning cap to carry the second part to rotate. Preferably, a connecting column extending downward is provided on the lower surface of the positioning cap, and the second part is sleeved on the outer periphery of the connecting column, and the adjusting rod is connected to the upper end of the connecting column. With the above structure, the rotation of the positioning cap can be realized by rotating the adjusting rod, which is convenient to operate.

[0016] For the convenience of connection, at least the upper part of the connecting column is hollow to form a limiting hole. Correspondingly, at least part of the outer periphery of the adjusting rod is formed into a limiting surface that is inserted and matched with the limiting hole and is circumferentially limited.

[0017] As an improvement, a control component is further provided between the adjusting rod and the damping member, which can control the damping strength between the first part and the second part, thereby controlling the rotation speed of the spray arm in the damping area. This structure facilitates the control of the specific rotation speed of the spray arm in a specific area, and more precisely controls the spraying time and the amount of sprayed water in the specific area, so as to meet the requirements of enhanced washing.

[0018] Preferably, the control component includes a copper rod and a cylindrical magnet. The magnet is connected to the second part of the damping member and moves synchronously with the second part. The copper rod is connected to the lower end of the adjusting rod and at least partially inserted into the axial hole in the center of the magnet from top to bottom. When the spray arm rotates to the state where the first part and the second part are engaged and friction occurs, the copper rod controls the frictional force between the first part and the second part by adjusting its insertion depth in the axial hole of the magnet. With the above structure, since the copper rod is constrained on the positioning cap and does not rotate, as the spray arm drives the first part to rotate, when the magnet rotates with the second part and frictions with the first part, an induced current will be generated in the copper rod, and further an induced magnetic field will be generated. This magnetic field will generate resistance to the rotation of the magnet, that is, damping is generated at the meshing position of the gear and the rack, and the rotation speed of the spray arm here will slow down, and this position corresponds to the specific area. When the insertion depth of the copper rod into the magnet is large, the generated magnetic field is strong, the damping between the first part and the second part is large, and the deceleration effect on the spray arm is strong; when the insertion depth of the copper rod into the magnet is small, the generated magnetic field is small, the damping between the first part and the second part is small, and the deceleration effect on the spray arm is weak. The user can set the deceleration situation of the spray arm according to needs.

[0019] Preferably, the adjusting rod is constrained on the positioning cap so as to be movable up and down. The limiting hole extends downward to the lower end of the magnet, and the lower part of the copper rod is inserted into the limiting hole so as to be movable up and down. To improve the operation stability and reliability of the adjusting rod.

[0020] In order to facilitate the user to set a specific area, an indicating structure for indicating the damping area is provided at the top of the adjusting rod. This structure can be arrow-shaped or other structures convenient for identification.

[0021] A cleaning method of a cleaning machine, using the above cleaning machine:

[0022] Before the cleaning program runs, place the tableware to be intensively washed in the specific area corresponding to the spray arm. First, rotate the adjusting rod to drive the positioning cap and the second part of the damping member to rotate, so that the damping area generated by the spray arm on its rotation path corresponds to the specific area; then adjust the adjusting rod up and down to control the damping magnitude generated when the first part and the second part of the damping member are in contact;

[0023] Start the washing program. The spray arm sprays washing water onto the tableware to be cleaned. When the spray arm rotates to a specific area, the spray arm sprays and cleans the specific area at a specific reduced speed.

[0024] Compared with the prior art, the advantages of the present invention are as follows: A structure that can form damping in a specific area as the spray arm rotates is provided between the spray arm and the positioning cap. Before the cleaning program runs, place the tableware that needs to be intensively washed in the specific area. When the cleaning program runs, each time the spray arm rotates to the specific area, the rotation speed will slow down, thereby prolonging the spraying time in this area, increasing the cleaning intensity of the specific area, and further meeting the need for intensive washing in the specific area. Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of the dishwasher according to the embodiment of the present invention;

[0026] Figure 2 is Figure 1 a schematic structural diagram of the spray arm in

[0027] Figure 3 is Figure 2 a cross-sectional view of

[0028] Figure 4 is Figure 3 a partial enlarged view of

[0029] Figure 5 is Figure 2 an exploded view of

[0030] Figure 6 is Figure 5 a partial enlarged view of Detailed Embodiments

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

[0032] As Figures 1 to 6 shown, the dishwasher of this embodiment includes a box body 1 and a spray arm 2. The spray arm 2 is rotatably arranged in the box body 1 and is disposed near the bottom of the box body 1. A plurality of spray holes 21 are formed in the top wall of the spray arm 2.

[0033] The dishwasher of this embodiment further includes a positioning rod 3, a positioning cap 4, a damping member 5, and an adjusting rod 6. The lower end of the positioning rod 3 is constrained to the bottom of the cabinet 1, and the upper end passes through the spray arm 2 and is located above the spray arm 2. In this embodiment, the lower end of the positioning rod 3 passes through the water inlet at the bottom of the spray arm and extends into the water outlet passage 91 of the water pump 9 below the spray arm 2, and is supported and constrained in this water outlet passage through a connecting arm. The positioning cap 4 is provided at the top of the positioning rod 3. A connecting structure that can lock and position the two or rotate them by a certain angle is provided between the positioning cap 4 and the positioning rod 3. This connecting structure can be a snap structure or a threaded connection structure, etc. That is, in the non-artificial adjustment state, the two will not rotate relative to each other. When manually adjusted, the two will rotate by a corresponding angle according to the angle rotated by the user. In this embodiment, a friction fit structure of a gear ring and a gear is adopted.

[0034] In this embodiment, a top plate 22 is provided at the top of the spray arm 2. An opening 221 for the upper part of the positioning cap 4 to be exposed is formed on the top plate 22. A limiting edge 42 that can cooperate with the lower surface of the top plate 22 for limiting is provided at the lower edge of the positioning cap 4.

[0035] The damping member 5 includes a first part 51 constrained to the spray arm 2 and a second part 52 constrained to the positioning cap 4. The first part 51 rotates with the spray arm 2 and cooperates with the second part 52 to form damping; the adjusting rod 6 is provided on the positioning cap 4 and is connected to the second part 52 of the damping member 5, and is used to adjust the position of the damping area formed by the first part 51 and the second part 52 on the rotation path of the spray arm 2 by circumferential rotation.

[0036] Before the cleaning program runs, place the tableware that needs to be intensively cleaned in a specific area. When the cleaning program runs, each time the spray arm 2 rotates to the specific area, the rotation speed will slow down, so as to extend the spraying time in this area and improve the cleaning intensity of the specific area.

[0037] The first part 51 is a rack in an arc section, and the rack is arranged corresponding to the periphery of the second part 52. The second part 52 is a gear that can rotate with the positioning cap 4. The rack rotates with the spray arm 2 and intermittently meshes and rubs with the gear. The first part 51 is in two groups and is symmetrically arranged on the spray arm 2. With the above structure, it is convenient to generate an intensively cleaned area locally on the rotation path of the spray arm 2 as the spray arm 2 rotates. Setting two groups of the first part 51 can improve the rotation stability of the spray arm 2 in the damping deceleration state and avoid jamming.

[0038] The central part of the positioning cap 4 is connected to the top of the positioning rod 3. The adjusting rod 6 is offset relative to the center of the positioning cap 4 on the positioning cap 4. The rotation of the adjusting rod 6 is used to drive the positioning cap 4 to carry the second part 52 to rotate. The lower surface of the positioning cap 4 is provided with a connecting column 41 extending downward. The second part 52 is sleeved on the outer periphery of the connecting column 41. The adjusting rod 6 is connected to the upper end of the connecting column 41. With the above structure, the rotation of the positioning cap 4 can be realized by rotating the adjusting rod 6, and the operation is convenient.

[0039] For the convenience of connection, the inside of the connecting column 41 is hollow to form a limiting hole 411. Correspondingly, at least part of the outer periphery of the adjusting rod 6 is formed into a limiting surface that is inserted and matched with the limiting hole 411 and circumferentially limited. The limiting surface of this embodiment is quadrangular prism-shaped. Correspondingly, the limiting hole 411 conforms to this structure.

[0040] A control component is also provided between the adjusting rod 6 and the damping member 5, which can control the damping strength between the first part 51 and the second part 52, thereby controlling the rotation speed of the spray arm 2 in the damping area. This structure is convenient for controlling the specific rotation speed of the spray arm 2 in a specific area, and more precisely controlling the spraying time and the amount of sprayed water in a specific area, so as to meet the requirements of enhanced washing.

[0041] The control component includes a copper rod 7 and a cylindrical magnet 8. The magnet 8 is connected to the second part 52 of the damping member 5 and moves synchronously with the second part 52. The copper rod 7 is connected to the lower end of the adjusting rod 6 and at least part of it is inserted into the central shaft hole of the magnet 8 from top to bottom. When the spray arm 2 rotates to the state where the first part 51 and the second part 52 are engaged and rubbed, the copper rod 7 controls the frictional force between the first part 51 and the second part 52 by adjusting its insertion depth in the shaft hole of the magnet 8. With the above structure, since the copper rod 7 is constrained on the positioning cap 4 and does not rotate, as the spray arm 2 drives the first part 51 to rotate, when the magnet 8 rotates frictionally with the first part 51 as it follows the second part 52, an induced current will be generated in the copper rod 7, and further an induced magnetic field will be generated. This magnetic field will generate resistance to the rotation of the magnet 8, that is, damping will be generated at the meshing position of the gear and the rack, and the rotation speed of the spray arm 2 here will slow down, and this place corresponds to a specific area. When the insertion depth of the copper rod 7 into the magnet 8 is large, the generated magnetic field is strong, the damping between the first part 51 and the second part 52 is large, and the deceleration effect on the spray arm 2 is strong; when the insertion depth of the copper rod 7 into the magnet 8 is small, the generated magnetic field is small, the damping between the first part 51 and the second part 52 is small, and the deceleration effect on the spray arm 2 is weak. The user can set the deceleration situation of the spray arm 2 according to needs.

[0042] The adjusting rod 6 is constrained on the positioning cap 4 so that it can move up and down. The limiting hole 411 extends downward to the lower end of the magnet 8. The lower part of the copper rod 7 is inserted into the limiting hole 411 so that it can move up and down. To improve the operation stability and reliability of the adjusting rod 6.

[0043] To facilitate the user to set a specific area, an indicating structure 62 for indicating the damping area is provided at the top of the adjusting rod 6. This structure can be arrow-shaped or other structures that are convenient to identify.

[0044] The cleaning method of the dishwasher in this embodiment is as follows:

[0045] Before the cleaning program runs, place the tableware to be intensively cleaned in the specific area A corresponding to the spray arm 2. In this embodiment, the specific area A is selected as the position of the diagonal line inside the corresponding box body 1. The handle of the pot can be placed towards the corner of the box body 1, and the specific area A corresponding to the difficult-to-clean pot;

[0046] First, rotate the adjusting rod 6 to drive the positioning cap 4 and the second part 52 of the damping member 5 to rotate, so that the damping area generated by the spray arm 2 on its rotation path corresponds to the specific area A; then adjust the adjusting rod 6 up and down to control the damping magnitude generated when the first part 51 and the second part 52 of the damping member 5 are in contact;

[0047] Start running the washing program. The spray arm 2 sprays the washing water onto the tableware to be cleaned. When the spray arm 2 rotates to the specific area, the spray arm 2 sprays and cleans the specific area at a specific reduced speed.

[0048] In this embodiment, a structure that can form damping in a specific area as the spray arm 2 rotates is provided between the spray arm 2 and the positioning cap 4. Before the cleaning program runs, place the tableware that needs to be intensively cleaned in the specific area. When the cleaning program runs, each time the spray arm 2 rotates to the specific area, the rotation speed will slow down, thereby prolonging the spraying time of this area and improving the cleaning intensity of the specific area, so as to meet the need for intensive cleaning in the specific area.

[0049] In the description and claims of the present invention, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and elements of the present invention. However, these terms are used here only for the purpose of convenient explanation and are determined based on the example orientations shown in the drawings. 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, "upper" and "lower" are not necessarily limited to the directions opposite to or consistent with the direction of gravity.

Claims

1. A cleaning machine, comprising a housing (1) and a spray arm (2), wherein the spray arm (2) is rotatably disposed in the housing (1) and arranged near the bottom of the housing (1), characterized in that: Also includes A positioning rod (3), the lower end of which is constrained at the bottom of the box body (1), and the upper end of which passes through the spray arm (2) and is located above the spray arm (2); A positioning cap (4) is arranged on the top of the positioning rod (3), and a connecting structure is arranged between the positioning cap (4) and the positioning rod (3) so that the two can be locked in position or rotated at a certain angle; The damping member (5) comprises a first part (51) constrained on the spray arm (2) and a second part (52) constrained on the positioning cap (4), wherein the first part (51) rotates with the spray arm (2) and cooperates with the second part (52) to form damping; An adjusting rod (6) is arranged on the positioning cap (4) and connected to the second part (52) of the damping member (5), and is used for adjusting the position of the damping area formed by the first part (51) and the second part (52) on the rotation path of the spray arm (2) through circumferential rotation.

2. The cleaning machine according to claim 1, characterized in that: The first part (51) is a rack in the form of an arc segment, and the rack is arranged corresponding to the periphery of the second part (52). The second part (52) is a gear that can rotate with the rotation of the positioning cap (4). The rack intermittently meshes and rubs with the gear as the spray arm (2) rotates.

3. The cleaning machine according to claim 2, characterized in that: The central part of the positioning cap (4) is connected to the top of the positioning rod (3), and the adjusting rod (6) is offset on the positioning cap (4) relative to the center of the positioning cap (4). The adjusting rod (6) rotates to drive the positioning cap (4) to carry the second part (52) to rotate.

4. The cleaning machine according to claim 3, characterized in that: The lower surface of the positioning cap (4) is provided with a connecting column extending downward, the second part (52) is sleeved on the outer periphery of the connecting column, and the adjusting rod (6) is connected to the upper end of the connecting column.

5. The cleaning machine according to claim 4, characterized in that: At least the upper interior of the connecting column is hollow to form a limiting hole, and correspondingly, at least part of the outer periphery of the adjusting rod (6) is formed into a limiting surface that is plug-fitted with the limiting hole and limits the position in the circumferential direction.

6. The cleaning machine according to any one of claims 1 to 5, characterized in that: A control component capable of controlling the damping strength between the first part (51) and the second part (52) and thus controlling the rotation speed of the spray arm (2) in the damping area is also provided between the adjustment rod (6) and the damping member (5).

7. The cleaning machine according to claim 6, characterized in that: The control assembly comprises a copper rod (7) and a cylindrical magnet (8), wherein the magnet (8) is connected to the second part (52) of the damping member (5) and moves synchronously with the second part (52), and the copper rod (7) is connected to the lower end of the adjusting rod (6) and at least part of it is inserted vertically into the axial hole in the center of the magnet (8). When the spray arm (2) rotates to a state where the first part (51) and the second part (52) are in meshing friction, the copper rod (7) controls the friction between the first part (51) and the second part (52) by adjusting the insertion depth of the copper rod (7) in the axial hole of the magnet (8).

8. The cleaning machine according to claim 7, characterized in that: The adjusting rod (6) is constrained on the positioning cap (4) so ​​as to be movable up and down.

9. The cleaning machine according to claim 6, characterized in that: The top of the adjusting rod (6) is provided with an indication structure for indicating the damping area.

10. A cleaning method for a cleaning machine, characterized in that: A cleaning machine according to any one of claims 6 to 9; Before the washing program is run, the dishes to be washed are placed in a specific area of ​​the corresponding spray arm (2), and the adjustment rod (6) is first rotated to drive the positioning cap (4) and the second part (52) of the damping member (5) to rotate, so that the damping area generated by the spray arm (2) on its rotation path corresponds to the specific area; then the adjustment rod (6) is adjusted up and down to control the damping size generated when the first part (51) and the second part (52) of the damping member (5) are in contact; The washing program starts running, the spray arm (2) sprays washing water toward the dishes to be washed, and when the spray arm (2) rotates to a specific area, the spray arm (2) sprays and washes the specific area at a slowed specific rotation speed.

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