CN111979700A

CN111979700A - Drum balancing device and washing machine

Info

Publication number: CN111979700A
Application number: CN202010826214.XA
Authority: CN
Inventors: 朱卓文; 卢惠荧; 吴诗怡; 陈成聪
Original assignee: Guangdong Power Grid Co Ltd; Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Guangdong Power Grid Co Ltd; Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2020-08-17
Filing date: 2020-08-17
Publication date: 2020-11-24

Abstract

The invention relates to a drum balancing device and a washing machine, which are coaxially arranged at the bottom of a drum and comprise a base, a driving device, a controller, a sensor and two balancing rods, wherein the driving device and the base are coaxially arranged, the two balancing rods are both arranged on the driving device, the driving device can drive the two balancing rods to respectively rotate around the axis of the base, the driving device and the sensor are both electrically connected with the controller, and the sensor is used for detecting the radial gravity center offset of the drum and enabling the gravity center offset to reach a set value by adjusting the positions of the two balancing rods. Through setting up two balancing poles, drive two balancing poles respectively through drive arrangement and rotate around the axis of base to the regulation focus position that makes two balancing poles is opposite with the actual focus position direction of clothing in the cylinder, makes the focus of cylinder balanced, has and avoids the cylinder focus to take place the skew, promotes the characteristics that the cylinder operates steadily.

Description

Drum balancing device and washing machine

Technical Field

The invention relates to the technical field of washing machines, in particular to a drum balancing device and a washing machine comprising the same.

Background

The washing machine that uses at present generally designs has the dehydration cylinder, and the dehydration cylinder is cylindrical cavity structure, and its lateral wall is seted up many round holes that are used for the drainage. After the clothes are cleaned, the clothes are placed in the cavity, and water is thrown out towards the periphery under the action of centrifugal force and is filtered out through the round holes through high-speed rotation of the dewatering drum, so that the purpose of rapid dewatering is achieved, and the washing efficiency is improved. However, when the clothes in the dewatering drum are not placed uniformly or shoes are dewatered, the center of gravity of the dewatering drum is shifted, so that the washing machine is strongly vibrated when rotating, and the peripheral part of the transmission shaft of the dewatering drum is unevenly stressed, so that peripheral parts are abraded.

Disclosure of Invention

The invention aims to provide a drum balancing device and a washing machine, which can avoid the shift of the center of gravity of a drum so as to ensure the stable operation of the drum.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a pair of cylinder balancing unit, coaxial setting in the bottom of cylinder, including base, drive arrangement, controller, sensor and two balancing poles, drive arrangement with the base is coaxial to be set up, two the balancing pole all set up in drive arrangement is last, just drive arrangement can drive two the balancing pole winds respectively the axis of base rotates, drive arrangement with the sensor all with the controller electricity is connected, the sensor is used for detecting the radial focus offset of cylinder to make through adjusting two the position of balancing pole the focus offset reaches the setting value.

Further, a first end of the balance bar is connected with the driving device, a second end of the balance bar extends to the periphery of the base, and the cross-sectional area of the balance bar is gradually increased from the first end to the second end.

The ballast water storage device is characterized by further comprising a water storage bin and a water pump, wherein the water storage bin is used for storing ballast water, a containing cavity used for containing the ballast water is arranged in the balance rod, the containing cavity is communicated with the water storage bin through a water conveying pipe, and the water pump can drive the ballast water to circulate between the water storage bin and the containing cavity.

Furthermore, the base is close to a side annular of balancing pole is provided with the spout, the balancing pole be provided with spout complex vaulting pole, the vaulting pole with the spout is pegged graft, just the balancing pole can drive the vaulting pole is followed the direction that encircles of spout removes.

Furthermore, one end of the support rod is fixedly connected with the balance rod, the other end of the support rod is rotatably provided with a roller, and the support rod is connected with the sliding groove in a rolling mode through the roller.

Furthermore, the driving device comprises a first driving device and a second driving device, the two balancing rods are respectively installed on the first driving device and the second driving device, and the first driving device and the second driving device respectively drive the corresponding balancing rods to rotate around the axis of the base.

Further, the first driving device and the second driving device are both stepping motors.

Still provide a washing machine, include the cylinder balancing unit, the cylinder is provided with the dehydration chamber that is used for placing the clothing, the lateral wall interval in dehydration chamber is provided with a plurality of apopores, the downside in dehydration chamber is provided with and is used for the installation cavity of cylinder balancing unit, dehydration chamber with separate through the baffle between the installation cavity.

Furthermore, the baffle is curved surface form, the middle part of baffle is towards one side arch of dehydration chamber.

Further, the water outlet hole close to one side of the partition plate is flush with the periphery of the partition plate.

Compared with the prior art, the invention has the beneficial effects that:

according to the drum balancing device and the washing machine, the two balancing rods are arranged, and the driving device is used for driving the two balancing rods to rotate around the axis of the base respectively, so that the directions of the adjusting gravity center positions of the two balancing rods are opposite to the directions of the actual gravity center positions of clothes in the drum, the gravity centers of the drum are balanced, and the drum balancing device and the washing machine have the characteristics of avoiding the gravity centers of the drum from shifting and promoting the drum to stably run.

Drawings

Fig. 1 is a plan view of a drum balancing device of an embodiment.

Fig. 2 is a sectional view of a drum balancing device of the embodiment.

Fig. 3 is an assembly view of the drum balancing device and the drum according to the embodiment.

In the figure:

1. a base; 10. a chute; 2. a balancing pole; 21. a stay bar; 3. a drive device; 31. a first driving device; 32. a second driving device; 33. rotating the housing; 4. a drum; 40. a dehydration cavity; 41. a water outlet hole; 42. a partition plate; 43. a mounting cavity; 5. and a controller.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.

As shown in fig. 1 to 3, the roller balancing device provided by the present invention is coaxially disposed at the bottom of a roller 4, and includes a base 1, a driving device 3, a controller 5, a sensor and two balancing rods 2, the driving device 3 is coaxially disposed with the base 1, the two balancing rods 2 are both disposed on the driving device 3, the driving device 3 can drive the two balancing rods 2 to rotate around the axis of the base 1, the driving device 3 and the sensor are both connected with the controller 5, and the sensor is configured to detect the radial center-of-gravity offset of the roller 4, and adjust the positions of the two balancing rods 2 to make the center-of-gravity offset reach a set value. It will be understood that the drum 4 is of a cylindrical chamber structure provided with a dewatering chamber open at the upper end for placing the laundry to be dewatered. The lower extreme of cylinder 4 is connected with power device through the transmission shaft, and the transmission shaft is fixed with cylinder 4 coaxial coupling, during the dehydration, drives cylinder 4 through the transmission shaft and rotates around its axis, makes water outwards throw away under the effect of centrifugal force, realizes the dehydration to the clothing. When the center of gravity of the drum 4 is deflected due to factors such as the placement position of clothes or the shape of clothes in the drum 4, the pressure applied to one side of the transmission shaft close to the center of gravity direction is increased to cause local abrasion, and meanwhile, the rotation of the drum 4 is not stable. Therefore, by providing a sensor on the transmission shaft, the actual center of gravity position of the drum 4 is detected by the sensor. And calculates an offset T between the actual barycentric position and the design barycentric position by the controller 5. The center of gravity position is set to a radial axis position of the drum 4, and the center of gravity position is shifted to the peripheral portion by a certain range value. In this embodiment, the roller balancing device includes a base 1, a driving device 3, a controller 5, a sensor and two balancing rods 2, wherein the base 1 plays a supporting role for installing the driving device 3, the controller 5 and the balancing rods 2. The driving device 3 is a stepping motor, the balance bar 2 is arranged along the radial direction of the base 1, one end of the balance bar 2 is connected with the driving device 3, the other end of the balance bar 2 extends to the periphery of the base 1, and the driving device 3 can respectively drive the two balance bars 2 to rotate around the axis of the base 1. And the adjusting gravity center positions of the two balancing rods 2 are positioned at one side departing from the actual gravity center position of the roller 4, and the two gravity center positions are positioned at two opposite sides of the axis of the base 1, so that the gravity centers of the roller 4 in the radial direction are balanced, and the purpose of eliminating the offset T between the actual gravity center position and the designed gravity center position is achieved. This embodiment is through setting up two stabilizer bars 2, drives two stabilizer bars 2 respectively through drive arrangement 3 and rotates around the axis of base 1 to the actual barycenter position opposite direction of clothing in the regulation barycenter position of making two stabilizer bars 2 and the cylinder 4 makes the barycenter of cylinder 4 balanced, has and avoids the cylinder 4 focus to take place the skew, promotes the characteristics that cylinder 4 operates steadily.

In one embodiment, the first end of the balance bar 2 is connected with the driving device 3, the second end of the balance bar 2 extends to the periphery of the base 1, and the cross-sectional area of the balance bar 2 is gradually increased from the first end to the second end of the balance bar 2. In this embodiment, the stabilizer bar 2 is set to have a larger end and a smaller end so that the center of gravity of the stabilizer bar 2 is located at the end away from the axis of the base 1. In order to uniformly apply a force to the drum 4 when the drum 4 is rotated, it is preferable that the center of gravity of the drum 4 is located on the axis of the drum 4. After the clothes are put in, the actual gravity center position of the drum 4 shifts to the periphery thereof under the influence of the clothes placing position, the shape of the clothes and other factors, so that the stress of the transmission shaft is uneven. Therefore, this embodiment locates the position of keeping away from the axis of cylinder 4 through the focus with balancing pole 2, when being the contained angle between two balancing poles 2, the regulation focus position of two balancing poles 2 is close to the radial border position of cylinder 4 more, is convenient for carry out balance adjustment to the actual focus position of cylinder 4 after putting into the clothing.

In another embodiment, this cylinder balancing unit still includes retaining storehouse and water pump, and the retaining storehouse is used for depositing the ballast water, is provided with the chamber that holds that is used for holding the ballast water in the balancing pole 2, holds between chamber and the retaining storehouse through the conveyer pipe intercommunication, and the water pump can drive the ballast water and circulate between retaining storehouse and holding the chamber. In this embodiment, the balance bar 2 is a hollow cavity structure, and ballast water is injected into the accommodating cavity of the balance bar 2 to increase the weight of the balance bar 2. When the device is used, the sensor detects the actual gravity center position of the roller 4, the controller 5 controls the driving device 3 to drive the two balance rods 2 to rotate, and the adjusted gravity center position and the actual gravity center position of the two balance rods 2 are located on two sides opposite to the axis of the roller 4. Then, ballast water is injected into the accommodating cavity, so that the weight of the balance rod 2 is increased, the adjusting gravity center of the balance rod 2 is balanced with the actual gravity center of the roller 4 after clothes are put into the roller 4, and the rotating stability of the roller 4 is ensured. Meanwhile, the stabilizer bar 2 is provided in a hollow structure, and its weight is increased by ballast water. The self weight of the balancing rod 2 is favorably reduced, and the additional increase of the load capacity of the roller 4 is avoided. When the actual gravity center displacement of the drum 4 after the clothes are put in is not deflected or the deflection amount is within the set value, the balance rod 2 does not need to be rotated to balance the actual gravity center position. At this time, the two stabilizer bars 2 are disposed to face each other with the axis of the base 1 as the center, and the center of gravity thereof is located on the axis of the base 1.

Specifically, a sliding groove 10 is annularly arranged on one side surface of the base 1 close to the balance bar 2, the balance bar 2 is provided with a support rod 21 matched with the sliding groove 10, the support rod 21 is inserted into the sliding groove 10, and the balance bar 2 can drive the support rod 21 to move along the extending direction of the sliding groove 10. In this embodiment, by providing the sliding chute 10 and the stay bar 21, the stay bar 21 is inserted into the sliding chute 10 and moves along the sliding chute 10. The brace 21 supports the balance bar 2, and when the drum 4 rotates, the balance bar 2 is subjected to a centrifugal force toward the periphery of the base 1, and the brace 21 can bear the centrifugal force, thereby preventing the centrifugal force from concentrating on the driving device 3.

Specifically, one end of the stay bar 21 is fixedly connected with the balance bar 2, the other end of the stay bar 21 is rotatably arranged by a roller, and the stay bar 21 is in rolling connection with the sliding groove 10 through the roller. It can be understood that the sliding chute 10 is circular, and the roller is arranged at the end of the stay bar 21 inserted into the sliding chute 10, so that the stay bar 21 and the sliding chute 10 are in rolling connection, thereby facilitating the smooth sliding of the stay bar 21 along the sliding chute 10 and reducing the friction resistance of the sliding surface.

In one embodiment, referring to fig. 2, the driving device 3 includes a first driving device 31 and a second driving device 32, two balancing rods 2 are respectively mounted on the first driving device 31 and the second driving device 32, and the first driving device 31 and the second driving device 32 respectively drive the corresponding balancing rods 2 to rotate around the axis of the base 1. In the present embodiment, the first driving device 31 and the second driving device 32 are both stepping motors. The driving device 3 further includes a rotating housing 33, the first driving device 31 is fixed on the base 1, the rotating housing 33 is fixedly connected to the first rotating shaft of the first driving device 31, and the rotating housing 33 is rotatably connected to the base 1, and the first driving device 31 can drive the rotating housing 33 to rotate relative to the base 1. The second drive means 32 is mounted in a rotary housing 33. One of the two stabilizer bars 2 is mounted on the outer wall of the rotating housing 33, and the other stabilizer bar 2 passes through the side wall of the rotating housing 33 and is fixedly connected to the second rotating shaft of the second driving device 32. An avoiding groove for the balance bar 2 to move is formed in the rotating shell 33, and the second driving device 32 drives the corresponding balance bar 2 to rotate, so that the first driving device 31 and the second driving device 32 respectively drive the corresponding balance bar 2 to rotate.

Specifically, the first driving device 31 and the second driving device 32 are stepping motors. The step motor is an actuating mechanism for converting electric pulse into angular displacement, and when the step motor receives a pulse signal, the step motor rotates by a fixed angle according to a set direction. The stepping motor is convenient for controlling the rotating angle of the balancing pole 2 on the base 1.

The remarkable effects of the embodiment are as follows: through setting up two stabilizer bars 2, drive two stabilizer bars 2 respectively through drive arrangement 3 and rotate around the axis of base 1 to the actual barycenter position opposite direction of clothing in the regulation barycenter position of making two stabilizer bars 2 and cylinder 4 makes the barycenter of cylinder 4 balanced, has and avoids cylinder 4 focus to take place the skew, promotes the characteristics that cylinder 4 operates steadily.

Still provide a washing machine, including foretell cylinder balancing unit, cylinder 4 is provided with the dehydration chamber 40 that is used for placing the clothing, and the lateral wall interval of dehydration chamber 40 is provided with a plurality of apopores 41, and the downside of dehydration chamber 40 is provided with the installation cavity 43 that is used for installing cylinder balancing unit, separates through baffle 42 between dehydration chamber 40 and the installation cavity 43. During the use, place the clothing in dehydration chamber 40, rotate cylinder 4, the actual focus position of sensor detection cylinder 4, drive arrangement 3 drive two balancing poles 2 and rotate to make the regulation focus position of two balancing poles 2 and the actual focus position balance of cylinder 4, avoid the offset between the focus position and its axis when cylinder 4 rotates to exceed the setting value. When the drum 4 rotates, water on the clothes is thrown out to the side wall of the dehydration cavity 40 under the action of centrifugal force and flows out of the dehydration cavity 40 through the water outlet holes 41, so that the clothes are dehydrated.

Specifically, the partition plate 42 has a curved surface shape, and the middle portion of the partition plate 42 is protruded toward one side of the dehydration chamber 40. It will be appreciated that by providing the baffle plate 42 with a curved surface, water accumulation on the surface of the baffle plate 42 is avoided. The middle part of the partition plate 42 protrudes to one side of the dehydration cavity 40, so that the middle part of the partition plate 42 is higher and lower, and water at the bottom of the dehydration cavity 40 flows from the middle part to the periphery part along the partition plate 42 during dehydration, and is prevented from being gathered on the partition plate 42 to influence the dehydration effect.

Specifically, the outlet holes 41 on the side close to the partition plate 42 are flush with the periphery of the partition plate 42. It can be understood that the plurality of outlet holes 41 are spaced apart from each other on the sidewall of the dewatering cavity 40, and the outlet hole 41 at the lowermost end of the dewatering cavity 40 is flush with the periphery of the partition plate 42, so that the water on the partition plate 42 can be completely discharged through the outlet hole 41 at the lowermost end, and the water accumulation is avoided.

The remarkable effects of the embodiment are as follows: the washing machine has the characteristics of stable operation by installing the drum balancing device at the bottom of the drum 4 and adjusting the positions of the two balancing rods 2 to ensure that the gravity center position of the drum 4 during rotation is positioned on the axis of the drum 4 or in a certain range taking the axis as the center.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.

Claims

1. The utility model provides a cylinder balancing unit, coaxial setting in the bottom of cylinder, its characterized in that, including base, drive arrangement, controller, sensor and two balancing poles, drive arrangement with the base is coaxial to be set up, two the balancing pole all set up in drive arrangement is last, just drive arrangement can drive two the balancing pole winds respectively the axis of base rotates, drive arrangement with the sensor all with the controller electricity is connected, the sensor is used for detecting the radial focus offset of cylinder to make through adjusting two the position of balancing pole the focus offset reaches the setting value.

2. The drum balancing device according to claim 1, wherein a first end of the balancing bar is connected to the driving device, a second end of the balancing bar extends to a periphery of the base, and a cross-sectional area of the balancing bar gradually increases from the first end to the second end.

3. The roller balancing device according to claim 1, further comprising a water storage bin and a water pump, wherein the water storage bin is used for storing ballast water, an accommodating cavity for accommodating the ballast water is arranged in the balancing rod, the accommodating cavity is communicated with the water storage bin through a water conveying pipe, and the water pump can drive the ballast water to circulate between the water storage bin and the accommodating cavity.

4. The roller balancing device according to claim 1, wherein a sliding groove is annularly formed on one side surface of the base, which is close to the balancing rod, the balancing rod is provided with a support rod which is matched with the sliding groove, the support rod is inserted into the sliding groove, and the balancing rod can drive the support rod to move along the surrounding direction of the sliding groove.

5. The roller balancing device according to claim 4, wherein one end of the stay bar is fixedly connected with the balancing bar, the other end of the stay bar is rotatably provided with a roller, and the stay bar is in rolling connection with the chute through the roller.

6. The drum balancing device according to claim 1, wherein the driving means includes a first driving means and a second driving means, two balancing bars are respectively mounted on the first driving means and the second driving means, and the first driving means and the second driving means respectively drive the corresponding balancing bars to rotate around the axis of the base.

7. The cylinder balancing apparatus of claim 6, wherein the first drive means and the second drive means are both stepper motors.

8. A washing machine comprising the drum balancing device of any one of claims 1 to 7, wherein the drum is provided with a dewatering cavity for placing clothes, the side wall of the dewatering cavity is provided with a plurality of water outlet holes at intervals, the lower side of the dewatering cavity is provided with a mounting cavity for mounting the drum balancing device, and the dewatering cavity and the mounting cavity are separated by a partition plate.

9. The washing machine as claimed in claim 8, wherein the partition is curved, and a middle portion of the partition is protruded toward one side of the dehydration chamber.

10. The washing machine as claimed in claim 8, wherein the outlet hole near one side of the partition is flush with a peripheral portion of the partition.