A washing apparatus and a control method thereof

Abstract

This invention discloses a washing device, belonging to the field of washing equipment, including a rotating component capable of switching between forward and reverse rotation; and an energy recovery device connected to the rotating component when in operation. The energy recovery device converts the kinetic energy of the rotating component into mechanical energy, and after the rotating component stops rotating, it returns the mechanical energy to the rotating component, causing it to rotate in the opposite direction. This invention also discloses a control method for the washing device. This invention reduces the resistance torque of the drive motor when starting the rotating component during rotation direction switching, making the starting current of the drive motor close to the current under normal operating conditions, thus reducing the energy consumption and heat generation of the drive motor. This eliminates the need for a dedicated stop time and shortens the overall washing time.

Description

Technical Field

[0001] This invention belongs to the field of washing equipment, and more specifically, relates to a washing device and its control method. Background Technology

[0002] During the washing process, washing machines, such as front-loading washing machines, typically need to constantly change the rotation direction of the inner drum to prevent clothes from tangling and to wash clothes as thoroughly as possible. When changing the drum's direction, the drive motor that drives the drum must first be turned off, and then restarted.

[0003] Frequent starting and stopping of the drive motor can cause it to overheat. To address this, washing machine programs are designed to stop the drive motor for a certain period after the inner drum has rotated for a certain time, before switching directions, in order to allow the motor to dissipate heat and prevent overheating and shutdown.

[0004] Depending on the washing program, common programs have a 20:5 to 20:10 rotation-to-stop ratio, meaning they wash for 20 seconds, stop for 5-10 seconds, and then rotate in the opposite direction for 20 seconds. The initial slow speed at startup doesn't reach the effective washing speed for clothes, meaning the effective washing time is less than 20 seconds. In other words, the actual effective washing time during the entire washing process (a program includes weighing, water intake, washing, draining, and spin-drying) is less than 1 / 2 to 3 / 4 of the total washing time, wasting a significant amount of time.

[0005] Furthermore, when the drive motor is completely stopped and then restarted, the overall load is large because the drive motor has to drive the inner drum and the clothes inside the inner drum. The resistance torque when the drive motor starts is large, which results in a large starting current of the drive motor. This is also the stage with the highest total energy consumption and the greatest heat generation during the operation of the drive motor.

[0006] In view of this, the present invention is proposed. Summary of the Invention

[0007] In order to solve at least some of the above-mentioned problems, one of the objectives of this invention is to provide a washing device that, when the rotating component switches its rotation direction, first drives the rotating component to rotate in the opposite direction, and when the rotation speed of the rotating component is close to the normal speed, provides a reverse current to the drive motor, thereby reducing the resistance torque when the drive motor drives the rotating component to rotate, making the starting current of the drive motor close to the current under normal operating conditions, reducing the energy consumption and heat generation of the drive motor, thus eliminating the need to reserve a special stop time and shortening the overall washing time.

[0008] The basic concept of the technical solution adopted in this invention is:

[0009] A washing device includes a rotating component capable of switching between forward and reverse rotation, and further includes:

[0010] An energy recovery device is provided. When the energy recovery device is in operation, it is connected to the rotating component. The energy recovery device converts the rotational kinetic energy of the rotating component when it stops driving into mechanical energy, and after the rotating component stops rotating, it applies the mechanical energy back to the rotating component, causing the rotating component to rotate in the opposite direction.

[0011] Furthermore, when the energy recovery device is in a non-operating state, the energy recovery device is separated from the rotating component.

[0012] Furthermore, the energy recovery device has an elastic body capable of generating elastic deformation. When the energy recovery device is in operation, the elastic body converts the rotational kinetic energy of the rotating component into elastic potential energy.

[0013] Preferably, the elastomer is movably disposed and can move closer to or further away from the rotating member;

[0014] The energy recovery device also includes:

[0015] A control mechanism is provided, with one end of the elastic body connected to the control mechanism. The control mechanism is used to drive the elastic body to move, so that the elastic body is connected to or separated from the rotating component.

[0016] More preferably, a friction plate is provided at the end of the elastic body connected to the rotating member, and when the elastic body is connected to the rotating member, the elastic body and the rotating member are in a damped connection.

[0017] Furthermore, the control mechanism includes:

[0018] The drive wheel is capable of switching between forward and reverse rotation.

[0019] A braking assembly, connected to the drive wheel, is used to drive the drive wheel to rotate;

[0020] The elastic body slides relative to the drive wheel. When the drive wheel rotates in one direction, the elastic body gradually moves closer to the rotating member and squeezes the rotating member. When the drive wheel rotates in the opposite direction, the elastic body gradually moves away from the rotating member and separates from the rotating member.

[0021] Preferably, the drive wheel and the rotating component are coaxially arranged;

[0022] More preferably, the number of the elastic bodies is multiple and they are arranged in a circular array with the central axis of the drive wheel as the center.

[0023] Furthermore, a groove is provided on the end face of the drive wheel, the groove extends from the outer edge of the drive wheel to the central region of the drive wheel, and the elastic body extends into the groove and can move along the extension direction of the groove;

[0024] Preferably, the groove is arc-shaped;

[0025] Preferably, the number of the slide grooves is multiple, and the number of the elastomers matches the number of the slide grooves;

[0026] More preferably, the plurality of said grooves are arranged in a circular array with the central axis of the drive wheel as the center;

[0027] More preferably, the elastomer is provided with a pulley, which is rotatably connected within the groove.

[0028] Furthermore, the drive wheel is a worm gear;

[0029] The braking assembly includes a worm gear meshing with a worm wheel and a brake motor that drives the worm gear to rotate.

[0030] Furthermore, it also includes a limiting member, which is located between the rotating member and the control mechanism, and the elastic body passes through the limiting member and slides relative to the limiting member.

[0031] Furthermore, the limiting member includes a base, on which a first channel is provided, and the elastic body passes through the first channel and is able to reciprocate within the first channel.

[0032] Furthermore, a second channel penetrating the substrate is provided on the substrate;

[0033] The first channel and the second channel are perpendicular to each other and internally connected;

[0034] The second channel is provided with multiple guide wheels, two of which are located on both sides of the first channel and extend into the first channel;

[0035] Preferably, there are multiple second channels, which are spaced apart along the extension direction of the first channel.

[0036] The second objective of this invention is to provide a control method for a washing device.

[0037] The basic concept of the technical solution adopted in this invention is:

[0038] A control method for controlling the washing equipment includes the following steps:

[0039] Determine whether the rotation time of the rotating body has reached the preset time. If the rotation time of the rotating body has reached the preset time, the drive motor of the washing equipment is powered off, and the energy recovery device switches to working mode.

[0040] The device monitors the power generation parameters or speed of the drive motor when it is driven. When the speed approaches the set value, a reverse current is applied to the drive motor, and the energy recovery device switches to a non-working state.

[0041] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0042] 1. This invention incorporates an energy recovery device that can switch between forward and reverse rotation of the rotating component. When the drive motor stops, the energy recovery device is connected to the rotating component. As the component gradually comes to a stop, the energy recovery device converts the rotational kinetic energy into elastic potential energy. After the component quickly stops moving, the device applies the accumulated potential energy to the component when it rotates in the opposite direction, providing power for its initial rotation. Once the elastic region of the energy recovery device has released the potential energy, the rotating component gains a reverse operating speed. When the rotational speed of the component approaches its normal operating speed, a reverse current is applied to the drive motor, allowing it to start easily and directly enter normal operation, reducing the load on the drive motor when starting the rotating component.

[0043] 2. After the energy recovery device is connected to the rotating component, it can apply resistance to the rotating component, restricting its rotation and allowing it to stop rotating more quickly. This shortens the time required for the rotating component to stop completely, thus saving the time spent switching between forward and reverse rotation and achieving the goal of saving washing time.

[0044] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0045] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0046] Figure 1 This is a schematic diagram of the washing equipment of the present invention;

[0047] Figure 2 This is a front view of the pulley of the washing device in this invention;

[0048] Figure 3 yes Figure 2 A cross-sectional view along AA;

[0049] Figure 4 This is a front view of the elastomer in this invention;

[0050] Figure 5 yes Figure 4 A cross-sectional view along BB;

[0051] Figure 6 This is a front view of the limiting component in this invention;

[0052] Figure 7 yes Figure 6 A cross-sectional view along CC;

[0053] Figure 8 This is a schematic diagram of the drive wheel of the present invention;

[0054] Figure 9 This is a schematic diagram of the energy recovery state of the drive motor of the washing equipment in this invention when the drive motor is de-energized and the rotating body brakes.

[0055] Figure 10 This is a schematic diagram of the structure of the washing equipment in the energy release state after the rotating component brakes;

[0056] Figure 11 This is a structural diagram of the washing equipment in the present invention when the energy of the rotating component is released after braking and the drive motor is started in reverse direction;

[0057] Figure 12 This is a schematic diagram of the structure of the washing equipment in the present invention under normal operating conditions, where the rotating part rotates in the opposite direction and the drive motor rotates in reverse.

[0058] Figure 13 This is a flowchart of the control method for the washing equipment in an embodiment of the present invention.

[0059] In the diagram: 100, housing; 200, suspension device; 300, outer cylinder; 400, drive motor; 500, belt; 600, pulley; 610, wheel disc; 620, spoke; 630, hub; 700, energy recovery device; 710, elastomer; 711, friction plate; 712, fixing plate; 713, elastic plate; 714, pulley shaft; 715, pulley; 720, limiting element; 721, base; 722, first channel; 723, second channel; 724, guide wheel; 730, drive wheel; 731, shaft hole; 732, slide groove; 740, braking assembly; 741, worm gear; 742, brake motor.

[0060] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0061] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0062] 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.

[0063] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 mechanical connection or an electrical 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 based on the specific circumstances.

[0064] like Figures 1-12 As shown, the present invention discloses a washing device.

[0065] The washing equipment of the present invention takes a drum washing machine as an example, but is not limited to drum washing machines.

[0066] The drum washing machine includes a hollow casing 100, inside which an outer drum 300 is installed and fixed to the casing 100 by a suspension device 200. An inner drum (not shown) is rotatably disposed inside the outer drum 300. A drive motor 400 is installed at the bottom of the outer drum 300. A pulley 600 is located on the outer side of the rear end wall of the outer drum 300, and the drive motor 400 is connected to the pulley 600 via a belt 500. The pulley 600 is coaxially arranged with the inner drum. A connecting shaft for connecting the inner drum is installed at the center of the pulley 600, and the connecting shaft passes through the wall of the outer drum 300 and connects to the inner drum located inside the outer drum 300.

[0067] When the drive motor 400 starts, the belt 500 transmits the force provided by the drive motor 400 to the pulley 600, causing the pulley 600 to rotate. As the pulley 600 rotates, the inner cylinder rotates synchronously with it. The drive motor 400 controls the forward and reverse rotation of the pulley 600; when the pulley 600 rotates forward, the inner cylinder rotates synchronously with it; when the pulley 600 rotates in reverse, the inner cylinder rotates synchronously with it.

[0068] In this embodiment, the pulley 600 includes a disc 610 and a hub 630 coaxially arranged. Multiple spokes 620 are disposed between the disc 610 and the hub 630, and are arranged in a circular array around the central axis of the hub 630. One end of each spoke 620 is connected to the disc 610, and the other end is connected to the hub 630.

[0069] A mounting hole is provided on the hub 630, extending through the hub 630 along its central axis. This mounting hole is used to mate with a connecting shaft. When the connecting shaft is mated with the hub 630, it is inserted into the mounting hole, and a key connects the connecting shaft to the hub 630. When the pulley 600 rotates, force is transmitted to the connecting shaft via the key between the connecting shaft and the hub 630, causing the connecting shaft to drive the inner cylinder to rotate.

[0070] The mounting hole through the hub 630 can also be set as a non-circular hole, and the connecting shaft that mates with it adopts a shape that is adapted to the non-circular hole, so that the pulley can drive the connecting shaft to rotate.

[0071] Preferably, the wheel disc 610, wheel hub 630, and wheel spokes 620 are machined as a single piece.

[0072] In this embodiment, the inner drum, the pulley 600, and the connecting shaft connecting the inner drum and the pulley 600 together form the rotating component of the washing equipment.

[0073] In this embodiment, an energy recovery device 700 is provided between the pulley 600 and the outer cylinder 300. The energy recovery device 700 has a working state and a non-working state: when the energy recovery device 700 is in the working state, the energy recovery device 700 is connected to the rotating component. When the energy recovery device 700 is in the non-working state, the energy recovery device 700 is separated from the rotating component.

[0074] In this embodiment, the energy recovery device 700 includes a drive wheel 730 mounted on a connecting shaft and a braking assembly 740 for driving the drive wheel 730 to rotate. The braking assembly 740 is fixed to the outer cylinder 300.

[0075] Specifically, the drive wheel 730 has a shaft hole 731 at its center, passing through the drive wheel 730 along its central axis. The interior of the shaft hole 731 is used to mount a bearing. The drive wheel 730 is rotatably connected to the connecting shaft via the bearing, and the drive wheel 730 and the connecting shaft are coaxially arranged. When the drive wheel 730 is not rotating, the connecting shaft is not restrained by the drive wheel 730, reducing the resistance when the drive motor 400 drives the inner cylinder to rotate.

[0076] Alternatively, a separate cylindrical shaft can be installed on the outer cylinder 300, allowing the center hole of the drive wheel 730 to pass through the cylindrical shaft and rotate in conjunction with the outer circumferential wall of the cylindrical shaft. The connecting shaft passes through the center of the cylindrical shaft, and the two are spaced a certain distance apart, without contacting each other. This eliminates the need for the aforementioned bearings. Since the rotation amplitude and rotation time of the drive wheel 730 are very small, the friction generated is also low, and an intermittent fit assembly with grease lubrication is sufficient for rotational fit.

[0077] In this embodiment, the energy recovery device 700 further includes an elastic body 710 located between the drive wheel 730 and the disc 610 of the pulley 600. One end of the elastic body 710 is slidably connected to the drive wheel 730, and the other end of the elastic body 710 is opposite to the inner surface of the disc 610. When the drive wheel 730 rotates in one direction, it pushes the elastic body 710 to move, connecting the elastic body 710 with the inner surface of the disc 610. After the elastic body 710 is connected to the inner surface of the disc 610, it converts the kinetic energy of the pulley 600 during rotation into elastic potential energy. And after the pulley 600 stops rotating, it reacts the elastic potential energy onto the pulley 600, causing the pulley 600 to rotate in the opposite direction.

[0078] When the drive wheel 730 rotates in the opposite direction, the drive wheel 730 pulls the elastic body 710 to move, causing the elastic body 710 to separate from the inner surface of the wheel disk 610.

[0079] A limiting member 720 is also provided between the drive wheel 730 and the wheel disk 610, and the limiting member 720 is fixed on the outer cylinder 300. The elastic body 710 passes through the limiting member 720 and slides relative to the limiting member 720.

[0080] When the drive wheel 730 rotates under the drive of the braking assembly 740, and when the drive wheel 730 rotates forward, it pushes the elastic body 710 closer to the inner side of the disc 610 and eventually abuts against the inner side of the disc 610. When the drive wheel 730 rotates in reverse, it pulls the elastic body 710 away from the inner side of the disc 610, causing the elastic body 710 to separate from the inner side of the disc 610.

[0081] In other embodiments, the configuration may also be as follows: when the drive wheel 730 rotates in reverse, the drive wheel 730 pushes the elastic body 710 closer to the inner side of the wheel 610 and eventually abuts against the inner side of the wheel 610. When the drive wheel 730 rotates forward, the drive wheel 730 pulls the elastic body 710 away from the inner side of the wheel 610, causing the elastic body 710 to separate from the inner side of the wheel 610.

[0082] In this embodiment, a groove 732 is machined on one end face of the drive wheel 730. The groove 732 extends from the outer edge of the drive wheel 730 to the location of the shaft hole 731 of the drive wheel 730, and the shape of the groove 732 is arc-shaped.

[0083] Preferably, there are two slide grooves 732. The two slide grooves 732 are symmetrically arranged with the central axis of the drive wheel 730 as the center point.

[0084] More preferably, there are multiple grooves 732, and the multiple grooves 732 are arranged in a circular array with the central axis of the drive wheel 730 as the center.

[0085] The number of elastic bodies 710 is the same as the number of grooves 732 formed on the end face of the drive wheel 730. There is a one-to-one correspondence between the elastic bodies 710 and the grooves 732. One end of the elastic body 710 extends into the groove 732 and is slidably connected to it. The end of the elastic body 710 extending into the groove 732 can move within the groove 732 along its extending direction.

[0086] In this embodiment, when the drive wheel 730 is installed on the connecting shaft, the end face of the drive wheel 730 with the groove 732 faces the pulley 600.

[0087] In this embodiment, the width of the disc 610 of the pulley 600 is larger than the width of the hub 630. One sidewall of the disc 610 and one sidewall of the hub 630 are on the same plane. The other sidewall of the disc 610 and the other sidewall of the hub 630 are on different planes. When the pulley 600 is assembled with the connecting shaft, the side of the hub 630 whose sidewalls are on the same plane as the disc 610 faces away from the direction of the inner cylinder.

[0088] In this embodiment, the drive wheel 730 is a worm gear, and the braking assembly 740 includes a worm 741 meshing with the drive wheel 730 and a brake motor 742 driving the worm 741 to rotate. The brake motor 742 is fixed to the outer wall of the outer cylinder 300. The worm 741 and the motor shaft of the brake motor 742 are coaxially opposite and fixed to each other. When the brake motor 742 is started, the motor shaft of the brake motor 742 can drive the worm 741 to rotate.

[0089] When the brake motor 742 drives the worm 741 to rotate, the worm 741 meshes with the drive wheel 730. As the worm 741 rotates, the drive wheel 730 also rotates synchronously. Simultaneously, the engagement between the worm wheel and the worm 741 has a self-locking property. When the drive wheel 730 pushes the elastic body 710 to abut against the disc 610 of the pulley 600, the brake motor 742 is de-energized. Through the self-locking property between the worm wheel and the worm, the position of the drive wheel 730 is locked, keeping the elastic body 710 in contact with the disc 610 of the pulley 600. When the pulley 600 rotates, the elastic body 710 undergoes bending deformation to store energy.

[0090] Specifically, the elastomer 710 includes a flexible and deformable elastic sheet 713. A fixing piece 712 is provided at one end of the elastic sheet 713. The fixing piece 712 is an arc-shaped piece with its central region arching outwards from the side opposite to the elastic sheet 713. The curvature of the fixing piece 712 matches the curvature of the wheel 610. The end of the elastomer 710 with the fixing piece 712 is used to connect to the inner surface of the wheel 610 of the pulley 600. A friction piece 711 is fixed to the surface of the fixing piece 712 facing away from the elastic sheet 713. The friction piece 711 is fixed to the fixing piece 712 by one of the following methods: bonding, riveting, or nesting.

[0091] When the friction plate 711 abuts against the inner surface of the pulley 610 of the belt pulley 600, the friction between the friction plate 711 and the belt pulley 600 ensures that the friction plate 711 fits tightly against the inner surface of the pulley 610. The friction between the friction plate 711 and the inner surface of the pulley 610 fixes the relative position of the friction plate 711 and the pulley 610. When the pulley 610 rotates, the friction plate 711 moves synchronously with the rotation of the pulley 610, causing the elastic plate 713 to bend and deform.

[0092] Specifically, the friction plate 711 is made of a material with a high coefficient of friction and low noise, such as rubber. The elastic plate 713 is made of a tough material, such as spring steel or carbon fiber.

[0093] In this embodiment, a pulley shaft 714 extending laterally from the end of the elastic sheet 713 away from the fixed sheet 712 is provided, and the central axis of the pulley shaft 714 is parallel to the central axis of the fixed sheet 712. A pulley 715 is rotatably connected to the pulley shaft 714.

[0094] When the elastomer 710 is connected to the drive wheel 730, the pulley 715 extends into the groove 732 on the end face of the drive wheel 730, and the pulley 715 can roll inside the groove 732 and move along the extension direction of the groove 732.

[0095] Preferably, the fixing plate 712 and the wheel 610 are coaxially arranged.

[0096] In some other embodiments, a fixing spring may be added between the elastic sheet 713 and the outer cylinder 300 in the bending direction of the elastic sheet 713. One end of the fixing spring is connected to the elastic sheet 713, and the other end of the fixing spring is connected to the outer cylinder 300. By adding a fixing spring between the elastic sheet 713 and the outer cylinder 300, the energy storage and braking capacity of the elastic body 710 is increased.

[0097] In this embodiment, the limiting member 720 includes a base 721, which is fixed to the outer wall of the rear end of the outer cylinder 300. A first channel 722 is provided on the base 721, extending from the side of the base 721 away from the drive wheel 730 towards the side of the drive wheel 730 and penetrating the base 721. The elastic sheet 713 of the elastic body 710 passes through the first channel 722 and can reciprocate within the first channel 722.

[0098] Preferably, the base 721 of the limiting member 720 is integrally injection molded with the rear wall of the outer drum 300 of the washing equipment.

[0099] A second channel 723 is also provided on the substrate 721, and the second channel 723 is perpendicular to the first channel 722. The interiors of the second channel 723 and the first channel 722 are connected. Multiple guide wheels 724 are provided inside the second channel 723, located on both sides of the first channel 722, with portions of the guide wheels 724 extending into the interior of the first channel 722. The multiple guide wheels 724 hold the elastic sheet 713 in the middle.

[0100] When the elastic plate 713 reciprocates in the first channel 722, it is positioned between multiple pairs of guide wheels 724 and is in contact with them. As the elastic plate 713 moves, the guide wheels 724 rotate. The guide wheels 724 not only guide the movement of the elastic plate 713 but also reduce friction between them, thus minimizing wear during the reciprocating motion.

[0101] Preferably, there are multiple second channels 723, which are arranged at intervals along the extension direction of the first channel 722.

[0102] When the inner cylinder needs to rotate in a different direction, the drive motor 400 is first powered off and stopped. The braking assembly 740 controls the drive wheel 730 to rotate in the forward direction, so that the elastic body 710 comes into contact with the disc 610 of the pulley 600. As the pulley 600 rotates, the elastic sheet 713 of the elastic body 710 bends and deforms, converting the rotational kinetic energy of the pulley 600 into the potential energy of the elastic body, so that the pulley 600 can stop moving quickly.

[0103] When the pulley 600 stops rotating completely, the potential energy stored in the elastic body 710 acts in the opposite direction on the pulley 600. The potential energy released by the elastic body 710 can provide power for the reverse rotation of the pulley 600, causing the pulley 600 to rotate in the opposite direction. When the speed of the pulley 600 reaches the normal rotation speed, a reverse current is connected to the drive motor 400 to reduce the resistance torque when the drive motor 400 starts, so that the starting current of the drive motor 400 is close to the current when the drive motor 400 is running normally.

[0104] Reference Figure 13 The present invention also discloses a control method for a washing device, which is used to control the washing device disclosed in the present invention.

[0105] The control method for washing equipment includes the following steps:

[0106] Start the washing program of the washing machine to make the inner drum of the washing machine start to rotate;

[0107] The system determines whether the inner cylinder has reached the set operating time. If the inner cylinder has reached the set operating time, the drive motor 400 is de-energized and the energy recovery device 700 switches to working mode. If the inner cylinder has not reached the set operating time, the inner cylinder continues to operate.

[0108] The system monitors the power generation parameters or speed of the drive motor 400 when it is driven. When the power generation parameters or speed of the drive motor 400 reach the set value, a reverse current is applied to the drive motor 400, and the energy recovery device 700 switches to a non-operating state. If the power generation parameters or speed of the drive motor 400 do not reach the set value, the drive motor 400 remains de-energized.

[0109] When a reverse current is applied to the drive motor 400, the inner cylinder rotates in the opposite direction.

[0110] Specifically, when the inner drum of the washing equipment reaches the set operating time, the drive motor 400 is de-energized, and simultaneously the brake motor 742 is activated by the first directional current. After the brake motor 742 is activated by the first directional current, it drives the worm gear 741 to rotate in the first direction. As the worm gear 741 rotates, it causes the drive wheel 730 to rotate forward. As the drive wheel 730 rotates forward, it pushes the elastic body 710 closer to the disc 610 of the pulley 600 and squeezes the inner surface of the disc 610, preventing the pulley 600 from rotating. When the elastic body 710 squeezes the disc 610, the current of the brake motor 742 increases to overcome the squeezing force exerted by the elastic body 710 on the disc 610.

[0111] The washing program has a maximum current setting value for the brake motor 742. When the current of the brake motor 742 increases, it is determined whether the current of the brake motor 742 has reached the maximum current setting value. If the current of the brake motor 742 exceeds the maximum current setting value, the brake motor 742 is de-energized.

[0112] When the brake motor 742 is de-energized, since the drive wheel 730 is a worm gear, when the worm 741 meshes with the drive wheel 730, due to the self-locking characteristic of the worm gear, the position of the elastic body 710 can be locked when it squeezes the disc 610 of the pulley 600, so that the elastic body 710 keeps squeezing the disc 610 of the pulley 600.

[0113] As the pulley 600 is rapidly slowed down by the elastic body 710, the elastic sheet 713 of the elastic body 710 bends during this process, accumulating elastic potential energy. When the pulley 600 comes to a complete stop, the potential energy accumulated by the elastic body 710 can drive the pulley 600 to rotate in the opposite direction. When the pulley 600 rotates in the opposite direction, the motor shaft of the drive motor 400 simultaneously rotates in the opposite direction under the transmission of the belt 500. During the reverse rotation of the motor shaft of the drive motor 400, the drive motor 400 generates electricity.

[0114] Specifically, considering energy conversion loss factors, the power generation parameters or speed of the drive motor 400 are set to a value that is slightly lower than the current parameters or speed of the drive motor 400 during normal operation.

[0115] When the power generation parameters or speed of the drive motor 400 are driven, the drive motor 400 is connected to reverse current, and at the same time, a second directional current is applied to the brake motor 742.

[0116] When a second-direction current is applied to the brake motor 742, the brake motor 742 drives the worm gear 741 to rotate in the second direction. As the worm gear 741 rotates, the drive wheel 730 reverses direction. As the drive wheel 730 rotates in the reverse direction, it pulls the elastic body 710 away from the pulley 610 of the belt pulley 600 until the elastic body 710 is completely separated from the belt pulley 600.

[0117] As the elastic body 710 gradually approaches the central axis of the drive wheel 730, the elastic body 710 will gradually hinder the rotation of the drive wheel 730 until the drive wheel 730 stops rotating completely. Therefore, during the process of the elastic body 710 separating from the wheel disc 610 of the pulley 600, the current of the brake motor 742 will also gradually increase.

[0118] Determine whether the current of the brake motor 742 has reached the set value. If the current of the brake motor 742 exceeds the set value, then the brake motor 742 is de-energized.

[0119] The above steps complete the switching of the inner drum rotation direction of the washing equipment.

[0120] Repeat the above steps until the washing program's set washing time is reached.

[0121] 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 washing device, comprising a rotating component capable of switching between forward and reverse rotation, characterized in that, It also includes: An energy recovery device (700) is connected to the rotating component when it is in operation. The energy recovery device (700) converts the rotational kinetic energy of the rotating component when it stops driving into mechanical energy, and after the rotating component stops rotating, it applies the mechanical energy back to the rotating component, causing the rotating component to rotate in the opposite direction.

2. The washing device according to claim 1, characterized in that, When the energy recovery device (700) is in a non-working state, the energy recovery device (700) is separated from the rotating component.

3. A washing device according to claim 2, characterized in that, The energy recovery device (700) has an elastic body (710) capable of generating elastic deformation. When the energy recovery device (700) is in operation, the elastic body (710) converts the rotational kinetic energy of the rotating member into elastic potential energy. Preferably, the elastomer (710) is movably disposed and can move closer to or further away from the rotating member; The energy recovery device (700) also includes: A control mechanism is provided, wherein one end of the elastic body (710) is connected to the control mechanism, and the control mechanism is used to drive the elastic body (710) to move, so that the elastic body (710) is connected to or separated from the rotating part; More preferably, a friction plate (711) is provided at one end of the elastic body (710) that is connected to the rotating member, and when the elastic body (710) is connected to the rotating member, the elastic body (710) is dampedly connected to the rotating member.

4. A washing device according to claim 3, characterized in that, The control mechanism includes: The drive wheel (730) is capable of switching between forward and reverse rotation; A braking assembly (740) is connected to the drive wheel (730) and is used to drive the drive wheel (730) to rotate; The elastic body (710) slides relative to the drive wheel (730). When the drive wheel (730) rotates in one direction, the elastic body (710) gradually approaches the rotating member and squeezes the rotating member. When the drive wheel (730) rotates in the opposite direction, the elastic body (710) gradually moves away from the rotating member and separates from the rotating member. Preferably, the drive wheel (730) and the rotating component are coaxially arranged; More preferably, the number of the elastomers (710) is multiple and they are arranged in a circular array with the central axis of the drive wheel (730) as the center.

5. A washing device according to claim 4, characterized in that, A groove (732) is provided on the end face of the drive wheel (730). The groove (732) extends from the outer edge of the drive wheel (730) toward the center region of the drive wheel (730). The elastic body (710) extends into the groove (732) and can move along the extension direction of the groove (732). Preferably, the groove (732) is arc-shaped; Preferably, there are multiple grooves (732), and the number of elastic bodies (710) matches the number of grooves (732); More preferably, the plurality of said grooves (732) are arranged in a circular array with the central axis of said drive wheel (730) as the center; More preferably, the elastic body (710) is provided with a pulley (715), which is tumbledly connected in the groove (732).

6. A washing device according to claim 4, characterized in that, The drive wheel (730) is a worm gear; The braking assembly (740) includes a worm (741) meshing with a worm gear and a brake motor (742) that drives the worm (741) to rotate.

7. A washing device according to any one of claims 3 to 6, characterized in that, It also includes a limiting member (720) located between the rotating member and the control mechanism, and the elastic body (710) passing through the limiting member (720) and sliding relative to the limiting member (720).

8. A washing device according to claim 7, characterized in that, The limiting member (720) includes a base (721), and a first channel (722) is provided on the base (721) through the base (721). The elastic body (710) passes through the first channel (722) and is able to reciprocate within the first channel (722).

9. A washing device according to claim 8, characterized in that, A second channel (723) is provided on the substrate (721) through the substrate (721); The first channel (722) and the second channel (723) are perpendicular to each other and internally connected; The second channel (723) is provided with a plurality of guide wheels (724), two of the guide wheels (724) are located on both sides of the first channel (722) and the guide wheels (724) extend into the first channel (722); Preferably, there are multiple second channels (723), and the multiple second channels (723) are spaced apart along the extension direction of the first channel (722).

10. A control method, characterized in that, It is used to control the washing equipment according to any one of claims 1-9, and the specific steps are as follows: Determine whether the rotation time of the rotating body has reached the preset time. If the rotation time of the rotating body has reached the preset time, the drive motor (400) of the washing equipment is de-energized and the energy recovery device (700) switches to working state. The generator (400) is monitored for power generation parameters or speed when it is driven. When the speed approaches the set value, a reverse current is applied to the generator (400), and the energy recovery device (700) switches to a non-working state.

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