CN211620926U - Balancing assembly and household appliance - Google Patents

Abstract

The utility model discloses a balanced subassembly and domestic appliance, balanced subassembly includes chamber portion, a plurality of balanced parts, determine module and controller, and the chamber portion is formed with the cavity, and a plurality of balanced parts can be established in the cavity with removing, and determine module includes transmitting element and receiving piece, and transmitting element is used for launching the detection medium, receives the piece and is used for receiving the detection medium, and the controller is used for confirming two adjacent balanced parts's relative position according to transmitting element transmission detection medium and receiving the time difference of receiving the detection medium. In the balancing assembly, the relative positions of the two adjacent balancing components can be acquired by arranging the detection assembly, so that the balancing assembly can be used for coordinating the movement of the balancing components in the cavity and ensuring the vibration reduction effect.

Description

Balancing assembly and household appliance

Technical Field

The utility model relates to a domestic appliance field, in particular to balanced subassembly and domestic appliance.

Background

At present, when a load is eccentric, a rotating cavity of a household appliance can generate serious vibration. In the related art, a balancing body is provided on a rotating chamber, a plurality of movable balancing members for balancing the eccentricity of a load are built in the balancing body, and vibration generated by the eccentricity of the load can be balanced by controlling the movement of the balancing members in the balancing body. However, in order to coordinate the plurality of balance members to counteract or reduce the vibration of the rotating cavity, it is necessary to acquire the relative positions between the plurality of balance members.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an embodiment provides a balanced subassembly and domestic appliance.

The utility model discloses embodiment provides a pair of balanced subassembly for domestic appliance, balanced subassembly includes:

a cavity portion formed with a cavity;

a plurality of counterbalance members movably disposed within the chamber;

a detection assembly comprising an emitter for emitting a detection media and a receiver for receiving the detection media; and

a controller for determining the relative position of two adjacent balancing members according to the time difference between the emission of the detection medium by the emitting member and the reception of the detection medium by the receiving member;

each of the balance members includes a first end and a second end disposed circumferentially along the chamber, and the balance assembly satisfies one of the following conditions:

the emitting piece and the receiving piece are arranged at the first end or the second end of the same balancing part;

the receiving piece is arranged at the second end of the other one of the two adjacent balancing parts;

the emitting piece is arranged at the second end of one of the two adjacent balancing parts, and the receiving piece is arranged at the first end of the other one of the two adjacent balancing parts.

In the balancing assembly, the relative positions of the two adjacent balancing components can be acquired by arranging the detection assembly, so that the balancing assembly can be used for coordinating the movement of the balancing components in the cavity and ensuring the vibration reduction effect.

In some embodiments, the relative position includes an angle formed by two adjacent balance members with respect to a center of the cavity.

In some embodiments, the balancing component comprises a correction unit for correcting the time difference.

In certain embodiments, the detection medium comprises at least one of light, sound, and magnetism.

In some embodiments, the detection medium is an ultrasonic signal, the transmitter includes an ultrasonic transmitter for transmitting the ultrasonic signal, and the receiver includes an ultrasonic receiver for receiving the ultrasonic signal.

In some embodiments, the balancing assembly includes a temperature compensation device for determining the velocity of the ultrasonic signal based on a temperature versus acoustic velocity correspondence and an ambient temperature at which the emitting member is located.

In some embodiments, the balancing member includes a rotating member and a driving member, the driving member is connected to the rotating member, and the driving member is configured to drive the rotating member to rotate so as to drive the balancing member to move in the chamber.

In some embodiments, a gear ring is disposed within the chamber, and the rotating member includes a gear in meshing engagement with the gear ring.

An embodiment of the present invention provides a home appliance, the home appliance includes:

a cavity capable of rotating;

the balance assembly of any preceding embodiment, the balance assembly mounted to the chamber.

Among the above-mentioned domestic appliance, through setting up detection assembly, can acquire the relative position of two adjacent balancing unit to can be used to coordinate the motion of a plurality of balancing unit in the cavity, guarantee the damping effect.

In some embodiments, the cavity has an axis of rotation, and the central axis of the cavity and the axis of rotation of the cavity are parallel or coincident.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a balancing assembly according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a portion of a balancing assembly according to an embodiment of the present invention;

FIG. 3 is another schematic structural view of a portion of a balancing assembly according to an embodiment of the present invention;

FIG. 4 is another schematic structural view of a balancing assembly according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of a balance member according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a household appliance according to an embodiment of the present invention.

Description of the main element symbols:

a balancing assembly 100, a household appliance 200;

a cavity part 11, a cavity 12, a balance part 13, a detection assembly 15, an emitting piece 16 and a receiving piece 17;

a first end 21, a second end 23;

the rotating member 31, the ring gear 32, the driving member 33, the controller 35, the power supply device 37, and the bracket 39;

the main controller 41, the cavity 43, the outer barrel 45, the vibration damping structure 47 and the mounting plate 49.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The disclosure of the present invention provides many different embodiments or examples for implementing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1 to 6, a balance assembly 100 for a household appliance 200 according to an embodiment of the present invention includes a cavity 11, a plurality of balance members 13, a detection assembly 15 and a controller 35, the cavity 11 is formed with a cavity 12, the plurality of balance members 13 are movably disposed in the cavity 12, the detection assembly 15 includes an emitting element 16 and a receiving element 17, the emitting element 16 is used for emitting a detection medium, the receiving element 17 is used for receiving the detection medium, and the controller 35 is used for determining a relative position between two adjacent balance members 13 according to a time difference between the emitting element 16 emitting the detection medium and the receiving element 17 receiving the detection medium. Each balance member 13 comprises a first end 21 and a second end 23 arranged circumferentially along the chamber 12, the balance assembly 100 satisfying one of the following conditions: the emitter element 16 and the receiver element 17 are mounted at the first end 21 or the second end 23 of the same balance member 13; the emitter element 16 is mounted at a first end 21 of one of the two adjacent balance members 13 and the receiver element 17 is mounted at a second end 23 of the other of the two adjacent balance members 13; the emitter element 16 is mounted at the second end 23 of one of the two adjacent balance members 13 and the receiver element 17 is mounted at the first end 21 of the other of the two adjacent balance members 13.

In the balancing assembly 100, the detection assembly 15 is arranged, so that the relative position of two adjacent balancing components 13 can be acquired, and the balancing components 13 can be used for coordinating the movement of the balancing components 13 in the cavity 12, and ensuring the vibration reduction effect.

Specifically, in the embodiment of the present invention, please refer to fig. 5, when the balancing assembly 100 is applied, it can be installed in the cavity 43 of the household electrical appliance 200. For example, in case that the balancing assembly 100 is applied to a washing machine (e.g., a drum washing machine), the cavity 43 may be an inner tub of the washing machine, and the balancing assembly 100 may be installed at one end or both ends of the inner tub of the washing machine, where the inner tub is used for placing articles such as laundry. In case that the washing machine is in a dehydration stage, the inner tub starts to rotate, and the balancing assembly 100 may change the position of the balancing member 13 by driving the balancing member 13 to move in the chamber 12, and eliminate or offset the vibration of the inner tub, thereby performing a vibration damping function.

In the illustrated embodiment, the cavity portion 11 is annular and has a central axis. The plurality of balance members 13 are provided in the chamber 12 along the circumferential direction of the chamber portion 11. One or several of the balancing members 13 are provided with a detection assembly 15.

In particular, the emitting member 16 may emit a detection medium into the chamber 12. The detection medium will arrive from one to the other of the two adjacent balance members 13 and will eventually be received by the receiving member 17. There is a time difference between when the launching element 16 starts to launch the detection medium and when the receiving element 17 receives the detection medium, and the controller 35 can determine the relative position of two adjacent balance members 13 according to the time difference. The relative position of two adjacent balance members 13 refers to the relative position of two adjacent balance members 13 within the chamber 12.

In the illustrated embodiment, the chambers 12 are distributed annularly along the circumference of the cavity 11. It will be appreciated that in other embodiments, the chamber 12 may be provided in other shapes, and is not limited to being annular. The following embodiments are described with respect to the case where the chamber 12 is annular, and the specific shape of the chamber 12 in other embodiments is not limited herein.

In the embodiment of the present invention, the controller 35 is installed on one of the balance members 13, the controller 35 transmits the relative positions of the two adjacent balance members 13 to the main controller 41 of the home appliance 200, and the main controller 41 coordinates the positions of the other balance members 13. In other embodiments, the controller 35 may be mounted outside the balance member 13, such as the chamber portion 11 or elsewhere. The controller 35 may directly perform wireless or wired communication with the controller 35 of the balancing member 13 itself to control the positions of the plurality of balancing members 13, and the like, and the installation position and the cooperation manner of the controller 35 are not specifically limited.

In addition, in one embodiment, in the case where two adjacent balance members 13 are close to each other, the controller 35 may control the positions of the two adjacent balance members 13 to stop the movement of the two adjacent balance members 13, or to move within a limited range, or to move in the opposite direction, so as to avoid the two adjacent balance members 13 from colliding with each other. The two adjacent balance members 13 being close to each other means that the distance between the two adjacent balance members 13 along the circumferential direction of the cavity portion 11 becomes gradually smaller. The limited range refers to a range in which the balance member 13 is movable within the chamber 12, while avoiding collision of the adjacent two balance members 13.

In the embodiment shown in fig. 2 and 3, the plurality of balance members 13 includes two adjacent balance members 13: a balance member 13a and a balance member 13 b. Wherein the balance member 13a includes a first end 21a and a second end 23a and the balance member 13b includes a first end 21b and a second end 23 b.

Referring to fig. 2, in the illustrated embodiment, the emitter element 16 and the receiver element 17 of the detection assembly 15 are mounted at the second end 23a of the balance member 13 a. The emitting member 16 may emit the detection medium into the chamber 12 at the second end 23 a. The detection medium reflects on the inner wall of the chamber 12 and passes along the circumferential direction of the chamber 12 until reaching the first end 21b of the balance member 13b, and reflects on the first end 21b to be folded back, and is finally received by the receiving member 17 of the second end 23 a.

It is understood that in the case where the second end 23 is provided with the detecting member 15, the second end 23a and the second end 23b may be provided with one detecting member 15, or one of the second end 23a and the second end 23b may be provided with one detecting member 15. The first end 21 is provided with the detecting element 15 similar to the above embodiments, and will not be described herein.

Referring to fig. 3, in the illustrated embodiment, the emitter element 16 is mounted at the second end 23a of the balance member 13a and the receiver element 17 is mounted at the first end 21b of the balance member 13 b. The emitting member 16 may emit the detection medium into the chamber 12 at the second end 23 a. The detection medium is reflected on the inner wall of the chamber 12 and transferred in the circumferential direction of the chamber 12 until reaching the first end 21b of the balance member 13b and being received by the receiving member 17 of the first end 21 b.

In further embodiments, the emitter element 16 may be mounted at the second end 23b of the balance member 13b and the receiver element 17 may be mounted at the first end 21a of the balance member 13 a.

The specific case where the number of the balance members 13 is two or more is similar to the embodiment where the number of the balance members 13 is two described above. It will be appreciated that for embodiments in which the emitter element 16 and the receiver element 17 are separately located on different balance members 13, the detection time of the detection assembly 15 can be reduced by detecting the arrival of the medium at another balance member 13.

The detection medium has a certain transfer speed when being transferred in the chamber 12. It will be appreciated that, given the known propagation velocity of the detection medium, the relative position of two adjacent balance members 13 can be determined, ultimately, from the measured time difference described above.

Referring to fig. 2 and 3, in some embodiments, the relative position includes the angle formed by two adjacent balance members 13 with respect to the center of the cavity 11. In this way, the relative position of two adjacent balance members 13 can be determined by the angle.

In the illustrated embodiment, the cavity portion 11 is annular and formed with a center, and the central axis passes through the center of the cavity portion 11. In the circumferential direction of the chamber 12, a line connecting the center of the balance member 13a and the center of the chamber portion 11 forms an angle θ with a line connecting the center of the balance member 13b and the center of the chamber portion 11. It will be appreciated that the greater the angle θ, the greater the distance between the balance member 13a and the balance member 13b, and the greater the time difference measured, and vice versa. That is, the angle θ is positively correlated with the time difference.

Specifically, in a case where the first end 21b of the balance member 13b is gradually brought closer to the second end 23a of the balance member 13a, the distance between the first end 21b and the second end 23a is gradually decreased, and the receiving member 17 can receive the detection medium emitted from the emitting member 16 more quickly, so that the time difference is gradually smaller. The distance between two adjacent balance members 13 can be calculated from the time difference and the speed of the detection medium. The corresponding relation between the distance and the included angle theta can be calibrated through testing. In the application process, when a certain distance between two adjacent balance parts 13 is detected, the included angle between the two balance parts can be obtained through the corresponding relation. Thus, the mass distribution formed by the two balancing members 13 for balancing can be used for subsequently balancing the vibration of the cavity 43. The center of the balance member 13 may be the geometric center, or center of mass, of the balance member 13. The centre of the cavity portion 11 may be the centre of the circle in which the annular chamber 12 is located.

In one embodiment, in the case that the included angle θ is smaller than the preset included angle value, the controller 35 may control the balance part 13a and the balance part 13b, for example, control the balance part 13a and the balance part 13b to stop moving, and avoid collision between the balance part 13a and the balance part 13 b.

In some embodiments, the balancing assembly 100 comprises a correction unit (not shown) for correcting the relative position to obtain the distance of two adjacent balancing members 13 along the chamber 12. Thus, the calculation accuracy of the time difference can be improved.

Specifically, since the detection medium needs to travel in the chamber 12 to be conveyed in the circumferential direction of the chamber portion 11, the conveyance path of the detection medium may be offset, so that the actually measured time difference may be deviated, for example, to be large, and the distance between the relative positions of the adjacent two balance members 13 determined by the controller 35 may be large. In this way, in the case where the adjacent two balance members 13 are controlled to stop moving to prevent collision, the actual distance of the two balance members 13 is smaller than the preset distance value. And the balance members 13 have inertia at the time of high-speed movement, and there is a possibility that the two balance members 13 are not controlled to stop moving and collide with each other.

In the present embodiment, the correction unit is preset with a correction value, and the magnitude of the correction value and the magnitude of the time difference are positively correlated. When the time difference is measured, the correcting unit corrects the time difference. Specifically, the larger the measured time difference is, the larger the preset correction value is. It will be understood that as the relative positions of two adjacent balance members 13 are further apart, the number of times the detection medium is reflected on the inner wall of the chamber 12 is increased, and the amount of deviation is increased. The magnitude of the offset generated is positively correlated with the time difference. By presetting a correction value corresponding to the magnitude of the time difference, the offset can be better eliminated, so that the real time difference can be obtained.

In certain embodiments, the detection medium comprises at least one of light, sound, and magnetism. As such, different types of detection assemblies 15 may be selected to accommodate various use environments.

In particular, in the case where the detection assembly 15 is used to detect the relative positions of two adjacent balance members 13, the detection assembly 15 can also be prevented from being disturbed by the external environment. In one example, the household appliance 200 is used in a situation with a strong magnetic field, and light or sound can be selected as the detection medium. Thus, the interference of an external magnetic field when the detection medium is magnetic can be avoided.

In one embodiment, in case the detection medium is an infrared light signal, the transmitting element 16 may comprise an infrared transmitter and the receiving element 17 may comprise an infrared receiver. In this way, the controller 35 can determine the relative positions of two adjacent balance members 13 by transmitting and receiving infrared light signals. The specific case where the detection medium includes both acoustic and magnetic is similar to the above embodiment.

In some embodiments, the detection medium is an ultrasonic signal, the transmitter 16 comprises an ultrasonic transmitter for transmitting the ultrasonic signal, and the receiver 17 comprises an ultrasonic receiver for receiving the ultrasonic signal. Thus, position detection can be performed by using ultrasonic waves.

It will be appreciated that the ultrasonic waves, due to their good directivity and reflectivity, may be readily transmitted along the circumferential direction of the chamber 12, which may also improve the detection accuracy of the detection assembly 15. Preferably, the detection assembly 15 is a high frequency ultrasonic sensor. In one embodiment, the ultrasonic transmitter can transmit an ultrasonic signal with a frequency of 200kHz, and the detection precision can be improved by at least 3 times compared with an ultrasonic signal with a frequency of 60 kHz.

The detecting assembly 15 includes an ultrasonic transducer (not shown) for converting the sound wave and the electric energy to each other, and preferably, the ultrasonic transducer is a high temperature resistant transducer to improve the reliability of the detecting assembly 15, for example, the maximum working temperature of the ultrasonic transducer can reach 100 ℃. The maximum operating temperature of the high temperature resistant transducer can be adjusted according to the specific environment.

Referring to fig. 3, the ultrasonic transmitter transmits an ultrasonic signal to the chamber 12 at the second end 23a of the balance member 13 a. The ultrasonic signal is reflected within the chamber 12 and transmitted along the circumferential direction of the chamber 12, so as to reach the first end 21b of the balance member 13b along the circumferential direction of the chamber 12, and be received by the ultrasonic receiver of the first end 21 b.

In some embodiments, balancing assembly 100 includes a temperature compensation device (not shown) for determining the velocity of the ultrasonic signal based on the temperature versus acoustic velocity correspondence and the ambient temperature at which emitting member 16 is located. Thus, under the condition of different environmental temperatures, the error generated when the ultrasonic signal is transmitted can be reduced.

For ultrasonic signals, the higher the temperature, the faster the transmission speed of the ultrasonic signal, and the smaller the measured time difference, and vice versa. By arranging the temperature compensation device, under the condition that the emitting part 16 is at different environmental temperatures, the more accurate relative position of the balance part 13 can be obtained. The corresponding relation between the temperature and the sound wave speed can be calibrated in advance through testing. In the actual use process, the ambient temperature of the transmitter 16 is obtained, the corresponding speed of the ultrasonic signal can be found through the corresponding relationship, and then the actual relative position of the two adjacent balance parts 13 can be obtained by calculating according to the measured time difference and the found speed value of the ultrasonic signal.

In the above correspondence, the temperature to be handled for each acoustic velocity may be a single temperature value or a single temperature range. For example, a temperature range of a ± 1 ℃ in which there corresponds a sonic velocity.

Further, in such embodiments, a temperature sensor may be provided inside the chamber 12. The temperature sensors may be provided on the inner wall of the chamber 12 and/or on one or more of the balance members 13. When there are multiple temperature data, the average value of the multiple temperature data can be used as the environment temperature, or different weights can be set for different temperature data to determine the environment temperature.

Referring to fig. 4, in some embodiments, the balancing unit 13 includes a rotating member 31 and a driving member 33, the driving member 33 is connected to the rotating member 31, and the driving member 33 is used for driving the rotating member 31 to rotate so as to drive the balancing unit 13 to move in the chamber 12. In this way, an active movement of the balancing member 13 within the chamber 12 can be achieved.

Specifically, in the illustrated embodiment, the rotating member 31 and the driving member 33 are both provided at the balancing member 13. The driving member 33 is connected to the rotating member 31, and the driving member 33 drives the rotating member 31 to rotate on the inner wall of the chamber 12, thereby driving the balance member 13 to move in the chamber 12.

In one embodiment, referring to fig. 4 and 5, a ring gear 32 is disposed within the chamber 12. The rotating member 31 comprises a gear wheel, which is in meshed connection with the ring gear 32. The balance member 13 is driven to move within the chamber 12 by the rotation of the drive gear by the drive member 33. Meanwhile, the gear and the gear ring 32 can be matched to prevent the balance part 13 from slipping in the moving process, and the moving stability of the balance part 13 is ensured. Specifically, the ring gear 32 is provided on the inner wall of the chamber 12 in the circumferential direction of the chamber portion 11.

Alternatively, the rotating member 31 may be a wheel. The wheels are in interference connection with the inner wall of the chamber 12, and the driving member 33 drives the wheels to move along the inner wall of the chamber 12, thereby driving the balancing member 13 to move.

In other embodiments, the drive member 33 may be mounted outside the balance member 13, for example, fixed to the cavity portion 11. The rotary member 31 may be disposed in the chamber 12 in the circumferential direction of the chamber portion 11. The balance member 13 is fixed to the rotation member 31. The driving member 33 is fixedly connected to the cavity portion 11. Specifically, the rotating member 31 is rotated in the chamber 12 in the circumferential direction of the chamber 11 by the driving member 33, so that the balance member 13 follows the movement of the rotating member 31 in the chamber 12. In one example, the rotating member 31 is a belt. The belt is disposed in a ring shape along the circumferential direction of the chamber portion 11. The balance member 13 is fixed to the belt. The drive member 33 is driven by the belt so that the balance member 13 is moved along with the belt. The specific manner in which the driver 33 drives the rotating member 31 is not limited herein.

In this embodiment, the controller 35 is used to control the operation of the driver 33. It will be appreciated that the controller 35 may control the drive member 33 such that the drive member 33 ceases operation or continues operation after a determined relative position of two adjacent counterbalance sections 13. In this way, the rotating member 31 will stop rotating or continue to rotate, so that the balancing member 13 stops in the chamber 12 or continues to move.

In the illustrated embodiment, the controller 35 is provided on the balance member 13. In particular, the balancing member 13 also comprises a power supply device 37 and a bracket 39. The power supply device 37 supplies power to the load of the balance member 13 such as the driver 33 and the controller 35. The bracket 39 is designed in an arc-like configuration in the circumferential direction of the chamber 12 so that the balance member 13 is arc-like in the length direction. The rotating member 31, the driving member 33, the controller 35, and the power supply unit 37 are all disposed on the bracket 39. In this way, the balance member 13 can move within the chamber 12 in cooperation with the annular structure of the chamber portion 11, avoiding collision with the inner wall of the chamber 12. The bracket 39 may be made of a thick stainless steel plate, and the bracket 39 is not deformed during the entire operation of the balance member 13. The power supply device 37 may use a rechargeable battery to supply power to the balance member 13. Other embodiments are not limited thereto. It is understood that in other embodiments, the controller 35 may be disposed outside the balancing member 13, such as mounted in the chamber portion 11, with the controller 35 in wired and/or wireless communication with the balancing member 13.

Referring to fig. 6, in other embodiments, the household appliance 200 may be provided with a main controller 41. Specifically, the main controller 41 and the controller 35 of the balancing assembly 100 may communicate by wire or wirelessly to transmit a current state signal and a movement signal of the balancing unit 13, etc. The current state signal of the balance member 13 includes the current position of the balance member 13, whether the balance member 13 is in a moving state, a communication connection state, and the like. The main controller 41 may transmit the movement signal to the controller 35, and the controller 35 controls the movement of the balancing member 13 according to the movement signal. The controller 35 may transmit a current state signal of the balancing unit 13 to the main controller 41, and the main controller 41 may analyze the current position, the moving state, the communication connection state, and the like of the balancing unit 13 upon receiving the current state signal of the balancing unit 13.

Further, the balance member 13 may include a control board (not shown), and the controller 35 may be provided to the control board. The specific position of the balancing member 13 may be transmitted to the main controller 41 of the home appliance 200 by wire or wirelessly.

Referring to fig. 6, the present invention provides a household appliance 200, the household appliance 200 includes a rotatable cavity 43 and the balancing assembly 100 of any of the above embodiments, and the balancing assembly 100 is mounted to the cavity 43.

In the household appliance 200, the detection assembly 15 is arranged, so that the relative positions of two adjacent balance components 13 can be acquired, and the balance components 13 can be used for coordinating the movement of the balance components 13 in the cavity 12, and ensuring the vibration reduction effect.

In the embodiment of the present invention, the household appliance 200 is provided with a vibration sensor (not shown) and a main controller 41. The vibration sensor may be used to detect vibration information of the cavity 43 or vibration information of other components connected to the cavity 43, and the main controller 41 may control the movement of the balance member 13 according to the vibration information, so as to adjust the specific position of the balance member 13 in the chamber 12 to counteract or reduce the vibration of the cavity 43 or other components.

The home appliance 200 may be a laundry treating appliance such as a washing machine (e.g., a drum washing machine), a dryer, or other home appliances 200 having a rotatable cavity 43.

Referring to fig. 6, the household appliance 200 is a drum washing machine, and can be used for washing clothes. The cavity 43 is an inner barrel rotatably disposed within an outer barrel 45. The clothes are placed in the inner barrel. When the washing machine works (such as a dewatering stage), the inner barrel rotates at a high speed, and clothes in the inner barrel can be unevenly distributed and have eccentric vibration. When the inner tub rotates at a high speed, the washing machine may generate a great vibration. Since the vibration of the inner tub is transmitted to the outer tub 45, it is determined whether the inner tub is in an eccentric vibration state by detecting the vibration information of the outer tub 45. The cavity part 11 is fixed on the inner barrel and rotates together with the inner barrel. Therefore, the movement of the balance member 13 in the chamber 12 can be controlled according to the vibration information to offset or reduce the eccentric mass when the inner tub rotates.

In addition, in order to further reduce the vibration transmission from the inside of the home appliance 200 to the outside, the outer tub 45 may be connected to the mounting plate 49 through the vibration reduction structure 47, and the mounting plate 49 may be fixed to the case bottom plate of the home appliance 200. The damping structure 47 may adopt a spring, hydraulic pressure, or other damping methods.

Referring to fig. 6, in some embodiments, the cavity 43 has an axis of rotation L, and the central axis of the cavity 11 and the axis of rotation L of the cavity 43 are parallel or coincident.

Specifically, a plurality of counterbalance assemblies 100 may be connected to the chamber 43. The central axes of the balancing assemblies 100 are all parallel or coincident with the rotation axis L, and the balancing assemblies 100 cooperatively damp the cavity 43. In this way, the main controller 41 controls the balancing units 13 of the plurality of balancing assemblies 100. In one example, two balancing assemblies 100 are respectively mounted on two ends of the cavity 43 along the rotation axis L, and two balancing members 13 are disposed in the chamber 12 of each balancing assembly 100.

In the description of the present specification, reference to the terms "one embodiment", "some embodiments", "certain embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A balancing assembly for a household appliance, characterized in that it comprises:

a cavity portion formed with a cavity;

a plurality of counterbalance members movably disposed within the chamber;

a detection assembly comprising an emitter for emitting a detection media and a receiver for receiving the detection media; and

a controller for determining the relative position of two adjacent balancing members according to the time difference between the emission of the detection medium by the emitting member and the reception of the detection medium by the receiving member;

each of the balance members includes a first end and a second end disposed circumferentially along the chamber, and the balance assembly satisfies one of the following conditions:

the emitting piece and the receiving piece are arranged at the first end or the second end of the same balancing part;

the receiving piece is arranged at the second end of the other one of the two adjacent balancing parts;

the emitting piece is arranged at the second end of one of the two adjacent balancing parts, and the receiving piece is arranged at the first end of the other one of the two adjacent balancing parts.

2. The balance assembly of claim 1, wherein the relative position comprises an angle formed by two adjacent balance members with respect to a center of the cavity.

3. The balancing assembly of claim 1, comprising a correction unit for correcting the time difference.

4. The counterbalance assembly of claim 1, wherein the detection medium comprises at least one of light, sound, and magnetism.

5. The counterbalance assembly of claim 1, wherein the detection medium is an ultrasonic signal, the transmitter includes an ultrasonic transmitter for transmitting the ultrasonic signal, and the receiver includes an ultrasonic receiver for receiving the ultrasonic signal.

6. A balance assembly according to claim 5, comprising temperature compensation means for determining the velocity of the ultrasonic signal in dependence on the temperature to acoustic velocity correspondence and the ambient temperature at which the emitting member is located.

7. The counterbalance assembly of any of claims 1 to 6, wherein the counterbalance section comprises a rotatable member and a drive member, the drive member being connected to the rotatable member, the drive member being configured to drive the rotatable member in rotation to move the counterbalance section within the chamber.

8. The counterbalance assembly of claim 7, wherein a gear ring is disposed within the chamber, and the rotatable member includes a gear in meshing engagement with the gear ring.

9. A household appliance, characterized in that it comprises:

a cavity capable of rotating;

the balance assembly of any one of claims 1-8, mounted to the cavity.

10. The household appliance according to claim 9, wherein the cavity has an axis of rotation, the central axis of the cavity and the axis of rotation of the cavity being parallel or coincident.

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