A dishwasher spray arm suspension device and dishwasher

Abstract

The application provides a dish-washing machine spray arm suspension device and a dish-washing machine, the spray arm suspension device comprises a spray arm, a position control part arranged around the rotating path of the spray arm and used for limiting the suspension position of the spray arm, the suspension position of the spray arm is controlled by magnetic force between the position control part and the spray arm, a matching part for generating magnetic force is arranged on the spray arm and matched with the position control part, the matching part is a coil wound on the longer two ends of the spray arm, the position control part is a magnet, the magnetic force between the spray arm and the position control part is controlled by controlling the current size in the position control part and the matching part, the suspension position of the spray arm is accurately controlled, the spray arm suspension device is arranged in the dish-washing machine, a salt adding opening is arranged on the same side of the spray arm, the suspension position of the spray arm is controlled by magnetic force between the spray arm and the position control part without blocking the salt adding opening, manual adjustment of the suspension position of the spray arm by the user is avoided, and the use experience of the user is improved.

Description

Technical Field

[0001] This invention belongs to the field of dishwashers, and specifically relates to a dishwasher spray arm suspension device and a dishwasher. Background Technology

[0002] Currently, the lower spray arm of the dishwasher stops at a random angle after operation. The lower spray arm may stop above the salt filling port cover. In this case, if the user needs to add salt, they need to manually rotate the lower spray arm to avoid the position of the salt filling port cover to facilitate the salt adding operation.

[0003] Chinese invention patent application number CN201911157315.6 discloses a dishwasher, including an inner tub and a spray arm rotatably disposed in the inner tub. At least one end of the spray arm along its length is provided with a first magnetic element, and the side wall of the inner tub is provided with a second magnetic element. When the first magnetic element moves closer to or away from the second magnetic element as the spray arm rotates, the second magnetic element can change the rotation speed of the spray arm. The above solution achieves the speed increase and deceleration of the spray arm through the interaction between the first and second magnetic elements, reducing the operating noise of the dishwasher. However, in the above solution, the first magnetic elements at both ends of the spray arm are simultaneously subjected to attractive or repulsive forces from the second magnetic element, which cannot effectively control the suspension position of the spray arm. This may cause the suspension position of the spray arm to block the salt filling port, affecting the cleaning effect of the dishwasher.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a dishwasher spray arm suspension device to address the problems in the prior art. The spray arm suspension device includes a spray arm and a position control unit, and the suspension position of the spray arm is controlled by the attractive force and / or repulsive force between the position control unit and the spray arm.

[0006] Another object of the present invention is to provide a dishwasher that addresses the problems in the prior art described above, having a spray arm suspension device, wherein the suspension position of the spray arm is controlled by the spray arm suspension device to prevent it from obstructing other working devices inside the dishwasher.

[0007] To achieve the above objectives, a first aspect of the present invention provides a dishwasher spray arm suspension device, comprising,

[0008] Spray arm;

[0009] A position control unit is located around the spray arm and controls the suspension position of the spray arm by adjusting the force between the unit and the spray arm.

[0010] Furthermore, the position control unit and / or the spray arm are magnetic, and the hovering position of the spray arm is controlled by adjusting the magnitude of the magnetic force between the position control unit and the spray arm.

[0011] The above solution controls the hovering position of the spray arm by controlling the magnitude of the magnetic force between the spray arm and the position control unit, thus preventing the spray arm from freely stopping and obstructing other working structures of the dishwasher, which would affect the cleaning effect of the dishwasher.

[0012] Furthermore, the position control unit or the spray arm is magnetic, and the position control unit and the spray arm control the suspension position of the spray arm through an attractive force.

[0013] Alternatively, as an alternative to the above solution, both the position control unit and the spray arm are magnetic, and the position control unit and the spray arm control the suspension position of the spray arm through attractive and / or repulsive forces.

[0014] In the above solution, the suspension position of the spray arm is controlled by attractive force and / or repulsive force, which avoids the increased complexity of the spray arm structure caused by controlling the suspension position of the spray arm through mechanical structure, and facilitates the replacement and maintenance of the spray arm.

[0015] Furthermore, the spray arm includes,

[0016] A mating part is provided on the spray arm and is used to cooperate with the position control part to generate magnetic force between the spray arm and the position control part.

[0017] Preferably, the mating parts are located at the two longer ends of the spray arm.

[0018] In the above solutions, the spray arm is usually lightweight, so it is mostly made of a material that cannot be directly attracted by a magnet. By installing a mating part on the spray arm, a magnetic force is generated between the mating part and the position control part to control the suspension position of the spray arm while meeting the weight requirements of the spray arm.

[0019] Furthermore, the position control unit and the mating unit are magnets, and the magnitude of the magnetic force is adjusted by controlling the distance between the position control unit and the spray arm.

[0020] In the above scheme, when the spray arm rotates to spray, the position control part moves away from the mating part. At this time, the spray arm is not subject to magnetic force or the magnetic force it receives is less than the rotational power, and the spray arm can work normally to spray. When the spraying ends, the position control part moves closer to the mating part. At this time, the spray arm is affected by magnetic force. By controlling the distance between the position control part and the mating part, the magnitude of the magnetic force between the position control part and the mating part is adjusted, thereby accurately controlling the hovering position of the spray arm.

[0021] As an alternative to the above solution, the position control unit is an electromagnet, and the mating part is a coil wound around the two longer ends of the spray arm. The magnitude of the magnetic force is adjusted by controlling the magnitude of the current in the position control unit and the mating part.

[0022] In the above scheme, when the spray arm rotates to spray, no current is supplied to the position control unit and the mating part. At this time, the position control unit and the mating part are not magnetic, and the spray arm can work normally to spray. When the spraying ends, current is supplied to the position control unit and the mating part, and the position control unit and the mating part generate magnetism. By controlling the magnitude of the current in the position control unit and the mating part, the magnitude of the magnetic force between the position control unit and the mating part is controlled, thereby precisely controlling the hovering position of the spray arm.

[0023] Furthermore, when the spray arm suspension device is working, the mating part is always subjected to attraction or repulsion when it approaches or moves away from the control part at the same position.

[0024] The above solution avoids the spray arm being affected by attraction and repulsion forces as it approaches and moves away from the position control unit, thus promoting the rotation of the spray arm.

[0025] A second aspect of the present invention also provides a dishwasher having the dishwasher spray arm suspension device described above. The dishwasher spray arm suspension device is disposed inside the inner tub, the spray arm is rotatably disposed on one side of the inner tub, and the position control unit is disposed around the rotation path of the spray arm. The suspension position of the spray arm is controlled by adjusting the force between the spray arm and the position control unit.

[0026] Furthermore, the inner liner is provided with a salt inlet on the same side as the spray arm. By adjusting the force between the spray arm and the position control unit, the suspension position of the spray arm is controlled so as not to block the salt inlet.

[0027] Furthermore, the position control unit is located on the same side as the spray arm and around the rotation path of the spray arm.

[0028] Alternatively, as an alternative to the above solution, the position control unit and the mating part on the spray arm are located on the same horizontal plane, and the position control unit is located on the inner tank on the side wall adjacent to the side with the spray arm.

[0029] Furthermore, the spray arm suspension device includes at least one of the aforementioned position control units, and a plurality of position control units are spaced apart around the rotation path of the spray arm.

[0030] Furthermore, the spray arm suspension device includes three position control units. The three position control units and the salt inlet are respectively arranged near the four corners of the inner tank on the side with the spray arm. The position control units arranged at two opposite corners of the salt inlet are located on the line connecting the salt inlet and the rotation center of the spray arm.

[0031] In the above scheme, three position control units are the preferred number of position control units. The three position control units and the salt inlet are respectively set close to the four corners. While limiting the spray arm through attractive force and / or repulsive force, the position control units are not arranged too compactly, thus avoiding the creation of blind spots and improving the limiting effect.

[0032] Furthermore, the magnetic pole directions of the position control units located at two diagonally opposite corners corresponding to the salt inlet are different from those of the other position control units.

[0033] In the above scheme, when the spray arm is not magnetic, since the magnetic poles on the two position control parts of the adjacent salt filling port are the same on the side of the spray arm rotation path, the spray arm is magnetized and rotates to a direction perpendicular to the line connecting the two position control parts under the influence of magnetic force. The position control parts set at the two corners of the salt filling port and the spray arm generate a repulsive force, so that the spray arm is suspended between any two adjacent position control parts, thus avoiding blocking the salt filling port.

[0034] When the spray arm is magnetic, its two ends approach the two position control parts adjacent to the salt inlet, and are subjected to attraction and repulsion respectively. Under the influence of the position control parts set at two opposite corners of the salt inlet, it stops between any two adjacent position control parts, thus avoiding blocking the salt inlet.

[0035] The beneficial effects of using the above technical solution are as follows:

[0036] A magnetic force is generated between the position control unit and the spray arm. The suspension position of the spray arm is controlled by adjusting the magnitude of this magnetic force, avoiding complex mechanical structures and saving internal space in the dishwasher. The spray arm and position control unit control the suspension position through attractive and / or repulsive forces, enabling diverse control of the spray arm's suspension position. A mating part on the spray arm, which works with the position control unit to generate magnetic force, ensures the applicability of the spray arm suspension device to different dishwasher spray arms. The position control unit and the mating part are magnets or electromagnets. The magnitude of the magnetic force is controlled by adjusting the distance between the position control unit and the mating part or by controlling the current in the position control unit and the mating part, thus controlling the spray arm's suspension position while avoiding interference with the spray arm. The normal rotation of the spray arm during operation has an impact; the spray arm suspension device controls the suspension position of the spray arm to not obstruct the salt inlet, avoiding the need for users to manually adjust the suspension position of the spray arm and improving the user experience; the spray arm suspension device includes at least one position control unit, and the setting of multiple position control units improves control accuracy and avoids blind spots; the spray arm suspension device includes three position control units, which are respectively set near the four corners of the side with the spray arm on the inner tank. The magnetic pole direction of the position control units set at two diagonally opposite corners corresponding to the salt inlet is different from that of the other position control units. Through attractive force and / or repulsive force, the spray arm is always suspended between two adjacent position control units, realizing precise control of the suspension position of the spray arm. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the first installation of the spray arm suspension device in the dishwasher described in this invention.

[0038] Figure 2 for Figure 1 The cross-sectional view along the AA direction is shown.

[0039] In the diagram: 1. Spray arm suspension device; 11. Spray arm; 111. Coil; 12. Position control unit; 2. Salt inlet; 3. Connecting seat. Detailed Implementation

[0040] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. Those skilled in the art will understand that the following embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0041] In the description of this invention, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0042] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0043] Example 1

[0044] As an embodiment of the present invention, this embodiment provides a spray arm hovering device, the specific structure of which is as follows: Figure 1 As shown, it includes a spray arm 11 and three position control units 12 spaced around the spray arm 11.

[0045] In this embodiment, both the spray arm 11 and the position control unit 12 are magnetic.

[0046] Furthermore, the spray arm 11 is provided with a mating part that cooperates with the position control unit 12 to generate magnetic force between the spray arm 11 and the position control unit 12.

[0047] Furthermore, the mating part is a coil 111 wound around the two longer ends of the spray arm 11, and the position control part 12 is an electromagnet. By controlling the magnitude of the current in the mating part and the position control part 12, the magnitude of the magnetic force between the spray arm 11 and the position control part 12 is controlled, thereby achieving precise control of the hovering position of the spray arm 11.

[0048] In the above scheme, when the spray arm 11 rotates to spray, no current is supplied to the mating part and the position control part 12. At this time, there is no magnetic force between the position control part 12 and the mating part, and the spray arm 11 can rotate normally to spray. When the spraying ends, current is supplied to the mating part and the position control part 12. At this time, a magnetic force is generated between the position control part 12 and the mating part. The magnitude of the magnetic force between the position control part 12 and the mating part is controlled by adjusting the magnitude of the current, thereby controlling the hovering position of the spray arm 11.

[0049] Example 2

[0050] As another embodiment of the present invention, this embodiment provides a spray arm hovering device, which has the same structure as the first embodiment. The difference is that the position control part and the mating part are magnets. By controlling the distance between the position control part and the mating part, the magnitude of the magnetic force between the spray arm and the position control part is controlled, thereby achieving precise control of the hovering position of the spray arm.

[0051] In the above scheme, when the spray arm rotates to spray, the distance between the mating part and the position control part is increased. At this time, there is no magnetic force between the position control part and the mating part, or the magnetic force is less than the power of the spray arm rotation, and the spray arm can rotate normally to spray. When the spraying ends, the distance between the mating part and the position control part is decreased. At this time, the magnetic force between the position control part and the mating part increases. By controlling the distance between the position control part and the mating part, the magnitude of the magnetic force is controlled, and the hovering position of the spray arm is controlled.

[0052] Example 3

[0053] As another embodiment of the present invention, this embodiment provides a spray arm suspension device with the same structure as the first embodiment, except that only one of the position control part and the mating part is magnetic.

[0054] In the above scheme, the hovering position of the spray arm is controlled only by the magnitude of the attraction between the position control unit and the mating unit.

[0055] Example 4

[0056] As another embodiment of the present invention, this embodiment provides a spray arm hovering device, which has the same structure as the first embodiment, the difference being that...

[0057] The present invention also provides a dishwasher having the above-mentioned sprayer, specifically:

[0058] Example 4

[0059] As an embodiment of the present invention, this embodiment provides a dishwasher having a spray arm suspension device as described in Embodiment 1. The spray arm suspension device 1 is installed inside the inner tub, and a salt inlet 2 is provided on the inner tub on the same side as the spray arm 11.

[0060] In this embodiment, the spray arm suspension device 1 is installed inside the dishwasher in the following position: Figure 1 As shown, the spray arm 11 is rotatably connected to the inner liner via a connecting seat 3 located on one side of the inner liner. The connecting seat 3 and the salt inlet 2 are located on the same side of the inner liner. Three position control parts 12 are spaced apart on the side wall adjacent to the side with the salt inlet 2 in the inner liner. Both the spray arm 11 and the position control parts 12 are magnetic. The position control parts 12 control the suspension position of the spray arm 11 through attractive force and / or repulsive force.

[0061] The above solution uses the position control unit 12 to control the hovering position of the spray arm 11 through attractive force and / or repulsive force, which avoids the spray arm 11 blocking the salt inlet 2 when it is hovering. Users do not need to manually adjust the hovering position of the spray arm 11, which improves the user experience and the cleaning effect of the dishwasher.

[0062] Furthermore, such as Figure 2 As shown, three position control units 12 are located inside the inner tank on the side wall adjacent to the side with the salt inlet 2. The three position control units 12 are located on the same plane as the spray arm 11 and are spaced apart around the rotation path of the longer ends of the spray arm 11.

[0063] In the above scheme, the magnetic pole of the spray arm 11 is directly opposite to the position control unit 12, which improves the position control effect of the position control unit 12 on the spray arm 11.

[0064] Alternatively, as an alternative to the above solution, three position control units 12 are located inside the inner tank on the same side as the salt inlet 2, and are spaced apart around the rotation path of the spray arm 11.

[0065] Furthermore, the three position control units 12 and the salt inlet 2 are respectively located near the four corners of the inner liner on the side with the spray arm 11. The position control units 12, which are located at two opposite corners of the salt inlet 2, are located on the line connecting the salt inlet 2 and the connecting seat 3.

[0066] In the above scheme, the two ends of the spray arm 11 are respectively close to the two position control parts 12 adjacent to the salt inlet 2, and are respectively subjected to attraction and repulsion. Under the influence of the position control parts 12 located at the two corners of the salt inlet 2, which are diagonally opposite each other, the spray arm 11 stops between any two adjacent position control parts 12, so that the spray arm 11 does not block the salt inlet 2.

[0067] Example 5

[0068] As another embodiment of the present invention, this embodiment provides a dishwasher having a spray arm suspension device as described in Embodiment 2. The spray arm suspension device is installed inside the inner tub, and a salt filling port is provided on the inner tub on the same side as the spray arm.

[0069] In this embodiment, the setting method of the spray arm suspension device is the same as that described in Embodiment 4. The difference is that the position control part is movably set on the inner tank. By controlling the distance between the position control part and the mating part, the magnitude of the magnetic force between the spray arm and the position control part is controlled, so as to accurately control the suspension position of the spray arm so as not to block the salt filling port.

[0070] Example 6

[0071] As another embodiment of the present invention, this embodiment provides a dishwasher with the same structure as embodiment five, the difference being that the mating part is movably connected to the spray arm, and the magnitude of the magnetic force between the spray arm and the position control part is controlled by controlling the distance between the position control part and the mating part, so as to accurately control the suspension position of the spray arm so as not to block the salt filling port.

[0072] Example 7

[0073] As another embodiment of the present invention, this embodiment provides a dishwasher with a spray arm suspension device, including an inner tub and a spray arm suspension device, wherein a salt inlet is provided on the inner tub, and the spray arm suspension device includes a spray arm and a position control part disposed in the inner tub.

[0074] In this embodiment, the spray arm is rotatably connected to the inner liner via a connecting seat located on one side of the inner liner. The connecting seat and the salt inlet are located on the same side of the inner liner. A position control part is provided on the side wall adjacent to the side with the salt inlet in the inner liner. At least part of the spray arm can be attracted by a magnet. The position control part is magnetic. The position control part controls the suspension position of the spray arm by the attraction force. The salt inlet, the connecting seat, and the position control part are not on a straight line.

[0075] Furthermore, the position control unit is an electromagnet. By controlling the on / off state and magnitude of the current, the position control unit can be controlled to have magnetism and the magnitude of the magnetism. When the spray arm is rotating normally, the current flowing to the position control unit is not conducted, and the spray arm can rotate normally. When the spray arm stops, the current conducts and the position control unit generates magnetism, which attracts the spray arm and controls the spray arm to hover in a position that does not block the salt inlet.

[0076] Example 8

[0077] As another embodiment of the present invention, this embodiment provides a dishwasher with a spray arm suspension device, including an inner tub and a spray arm suspension device. A salt filling port is provided on the inner tub. The spray arm suspension device includes a spray arm and a position control part 12 disposed in the inner tub. Both the spray arm and the position control part are magnetic.

[0078] In this embodiment, the spray arm is rotatably connected to the inner tank via a connecting seat inside the inner tank. The position control unit is an electromagnet. The spray arm generates magnetic force between the mating parts located at both ends and the position control unit. The mating parts are coils. The magnetic poles of the mating parts located on both sides of the spray arm are opposite in direction. The magnetic poles at both ends of the spray arm are the same as the magnetic poles of the position control unit facing the spray arm.

[0079] Furthermore, the salt inlet, connecting seat, and position control unit are located on the same straight line.

[0080] In the above solution, the spray arm and the position control unit repel each other. When the spray arm blocks the salt inlet, it will continue to rotate under the action of the repulsive force and eventually stop at the position where the salt inlet is not blocked, thus improving the user experience.

[0081] In the above scheme, the position control unit is an electromagnet, and coils are provided at both ends of the longer spray arm. By controlling the on / off state and magnitude of the current, the position control unit and the two ends of the longer spray arm can be controlled to determine whether the position control unit and the longer ends of the spray arm are magnetic and the magnitude of the magnetic field. When the spray arm is rotating normally, the current is not conducted, and neither the spray arm nor the position control unit is magnetic, so the spray arm can rotate normally. During or after the spray arm stops, the current is conducted, and the two sides of the longer spray arm and the position control unit generate magnetism. Through repulsive force, the spray arm is prevented from hovering at the position that blocks the salt inlet.

[0082] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A dishwasher spray arm suspension device, characterized in that, include, A spray arm having a mating part disposed on the spray arm for generating magnetic force; A position control unit is disposed around the rotation path of the spray arm. The position control unit and the mating unit control the suspension position of the spray arm through magnetic force, and the suspension position of the spray arm is set to avoid a preset working structure inside the dishwasher.

2. The dishwasher spray arm suspension device according to claim 1, characterized in that, The position control unit and / or the spray arm are magnetic, and the hovering position of the spray arm is controlled by adjusting the magnitude of the magnetic force between the position control unit and the spray arm.

3. The dishwasher spray arm suspension device according to claim 2, characterized in that, The position control unit or the spray arm is magnetic, and the position control unit and the spray arm control the suspension position of the spray arm through an attractive force.

4. The dishwasher spray arm suspension device according to claim 2, characterized in that, Both the position control unit and the spray arm are magnetic, and the position control unit and the spray arm control the suspension position of the spray arm through attractive and / or repulsive forces.

5. The dishwasher spray arm suspension device according to any one of claims 2-4, characterized in that, The mating part cooperates with the position control part to generate a magnetic force between the spray arm and the position control part.

6. The dishwasher spray arm suspension device according to claim 5, characterized in that, The mating parts are located at the two longer ends of the spray arm.

7. The dishwasher spray arm suspension device according to claim 5, characterized in that, The position control unit and the mating unit are magnets, and the magnitude of the magnetic force is adjusted by controlling the distance between the position control unit and the spray arm.

8. The dishwasher spray arm suspension device according to claim 5, characterized in that, The position control unit is an electromagnet, and the mating part is a coil wound around the two longer ends of the spray arm. The magnitude of the magnetic force is adjusted by controlling the magnitude of the current in the position control unit and the mating part.

9. A dishwasher having a dishwasher spray arm suspension device as described in any one of claims 1-8, characterized in that, The dishwasher spray arm suspension device is located inside the inner tank, and the spray arm is rotatably located on one side of the inner tank.

10. The dishwasher according to claim 9, characterized in that, The inner liner is provided with a salt inlet on the same side as the spray arm. The spray arm suspension device includes three position control units. The three position control units and the salt inlet are respectively located near the four corners of the inner liner on the side with the spray arm. The position control units located at two diagonally opposite corners of the salt inlet are located on the line connecting the rotation center of the salt inlet and the spray arm. By adjusting the force between the spray arm and the position control units, the spray arm is controlled to not block the salt inlet.

11. The dishwasher according to claim 10, characterized in that, The magnetic pole directions of the position control units located at two diagonally opposite corners corresponding to the salt inlet are different from those of the other position control units.

Images