INNER DRUM FOR WASHING MACHINE AND WASHING MACHINE

Abstract

A washing machine inner drum and a washing machine. The inner drum includes a hollow cylinder-shaped inner drum body, at least one counterweight body being arranged fixedly on the inner drum body; when the inner drum body rotates, the counterweight body rotates therewith, and the centre of mass of the counterweight body is positioned on the axis of the inner drum. The washing machine includes a shell and an outer drum, the present washing machine inner drum being arranged within the outer drum. The washing machine inner drum has good damping effects, and when vibration occurs, functions quickly and reduces the vibration.

Claims

1. A washing machine inner drum, comprising a hollow cylinder-shaped inner drum body, wherein at least one counterweight body is disposed fixedly to the inner drum body; when the inner drum body rotates, the counterweight body is capable of rotating with the inner drum body; and a center of mass of the counterweight body is positioned in an axis of the inner drum body.

2. The washing machine inner drum of claim 1, wherein the counterweight body is disposed fixedly on at least one of an outside edge and an inside edge of the inner drum body.

3. The washing machine inner drum of claim 1, wherein each counterweight body comprises at least two counterweight blocks, and a total center of mass of the at least two counterweight blocks is positioned in the axis.

4. The washing machine inner drum of claim 1, wherein the counterweight body is made from at least one of cement, concrete, cast iron and lead.

5. The washing machine inner drum of claim 1, wherein a guard shell is disposed at an outer side of the counterweight body.

6. The washing machine inner drum of claim 5, wherein the guard shell comprises at least two cavities that are arranged radially outwardly.

7. The washing machine inner drum of claim 5, wherein the guard shell comprises at least two cavities, wherein the counterweight body is arranged inside at least one cavity, and a mixture including steel balls and silicone oil is filled inside at least one other cavity.

8. The washing machine inner drum of claim 5, wherein the guard shell comprises at least two cavities, wherein the counterweight body is arranged inside at least one cavity, and liquid is filled inside at least one other cavity.

9. The washing machine inner drum of claim 1, wherein a front-end flange is disposed at an opening of the inner drum body, and the counterweight body is fixedly disposed at an outer peripheral face of the front-end flange.

10. A washing machine comprising a shell and an outer drum, wherein the outer drum is provided with the washing machine inner drum according to claim 1.

11. The washing machine inner drum of claim 1, wherein each counterweight body is an annular solid counterweight ring, and a center of the counterweight ring is positioned in the axis.

12. The washing machine inner drum of claim 5, wherein the guard shell comprises at least two cavities that are arranged sided by side axially with respect to the inner drum body.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG. 1 is a sectional view of a washing machine inner drum according to a preferred Embodiment 1 of the present disclosure;

[0023] FIG. 2 is a sectional view of structure of a guard shell according to a preferred Embodiment 1 of the present disclosure;

[0024] FIG. 3 is a sectional view of structure of a guard shell according to a preferred Embodiment 2 of the present disclosure.

REFERENCE NUMERALS IN THE DRAWINGS

[0025] 1. Inner drum body; 2. Counterweight body; 3. Front-end flange; 4. Rear-end flange; 5. Guard shell; 6. Balancing ring; 7. Mixture including steel balls and silicone oil; 8. Inner drum hexagonal bracket; 10. Water stirring leaf; 51. First cavity; 52. Second cavity.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The technical solution of the present disclosure will be further described below with reference to the accompanying drawings and by means of the specific embodiments.

Preferred Embodiment 1

[0027] The present preferred embodiment discloses a washing machine inner drum. As illustrated in FIGS. 1 and 2, the inner drum includes a hollow cylinder-shaped inner drum body 1, and a front-end flange 3 and a rear-end flange 4 are disposed at front and rear openings of the inner drum body 1, respectively. A hollow annular guard shell 5 is disposed at an outer peripheral face of the front-end flange 3. The guard shell 5 includes two cavities, namely a first cavity 52 and a second cavity 52, which are arranged radially inwardly and outwardly relative to the inner drum body 1. A counterweight body 2 is provided inside one cavity, and a mixture 7 including steel balls and silicone oil is filled inside the other cavity. A balancing ring 6 is disposed at an outer peripheral face of the rear-end flange 4 and is filled with the mixture 7 including steel balls and silicone oil. A water stirring leaf 10 is disposed inside the inner drum body 1. An inner drum hexagonal bracket 8 is provided at an outer side of the rear-end flange 4. The counterweight body 2 is made from cement.

[0028] A balancing ring that is originally provided at the front-end flange 3 is replaced with the counterweight body 2 and the mixture 7 including the steel balls and the silicone oil functioning as a balancing by the inner drum. The counterweight body 2 is disposed symmetrically with respect to the axis of the inner drum body 1. When the inner drum body 1 rotates, the counterweight body 2 can rotate therewith. Furthermore, the center of mass of the counterweight body 2 is located in the axis and has a better damping effect during the rotation of high speed thereof.

[0029] When the amount of eccentricity is smaller, the mixture 7 including the steel balls and the silicone oil can take effect more rapidly so as to suppress the unbalanced force caused by an eccentric load. When the eccentric load is greater, the mixture 7 including the steel balls and the silicone oil plays its role firstly, and then as the rotation speed increases, the centrifugal force created by the eccentric load increases, thus the counterweight body 2 starts taking effect to enable the inner drum to increase its speed smoothly.

Preferred Embodiment 2

[0030] The present preferred embodiment discloses a washing machine inner drum which has substantially the same structure as that of the preferred Embodiment 1. The inner drum includes a hollow cylinder-shaped inner drum body on which at least one counterweight body is fixedly disposed. Each counterweight body is disposed symmetrically with respect to the axis of the inner drum body. When the inner drum body rotates, the center of mass of the counterweight body is positioned in the axis.

[0031] The differences between the preferred embodiment 2 and the preferred embodiment 1 lie in that: the counterweight body is not limited to an integral counterweight ring, and it may also be a separated type structure. Namely, each counterweight body includes at least two counterweight blocks, the total center of mass of the at least two counterweight blocks is located in the axis. The material of the counterweight body is not limited to cement and may also be concrete, cast iron and/or lead. The position of the counterweight body is not limited to the outer peripheral face of the front-end flange of the inner drum body, instead, the counterweight body may also be disposed at outer peripheral face of the rear-end flange or other positions, as long as it can mitigate the vibration effectively as the inner drum body rotates at a higher speed. The number of the cavities of the guard shell is not limited to two, and it may be one or more. When there are two or more cavities, at least one of the cavities is provided with the counterweight body therein, and at least other one of the cavity is filled with liquid or the mixture including steel balls and silicone oil.

[0032] Multiple guard shells are not limited to be arranged radially and may also be arranged axially. As shown in FIG. 3, the first cavity 52 and the second cavity 52 are axially arranged side by side with respect to the inner drum body 1.

Preferred Embodiment 3

[0033] The present preferred embodiment discloses a drum washing machine which includes a shell, an outer drum and a washing machine inner drum as described above in the preferred Embodiment 1 or Embodiment 2, in which at least one counterweight body that is symmetrically disposed with respect to the axis is arranged on a inner drum body. When the inner drum body rotates, the center of mass of the counterweight body is positioned in the axis, and thus the vibration of the inner drum body can be reduced, thereby improving the stability of the washing machine during use. No other counterweights are needed to be arranged on the outer drum and the shell such that the structure can be more compact.

Preferred Embodiment 4

[0034] The present preferred embodiment discloses a washing machine whose structure is substantially the same as that of the preferred Embodiment 3. The washing machine includes a shell, an outer drum and a washing machine inner drum as described above in the preferred Embodiment 1 or Embodiment 2, in which at least one counterweight body that is symmetrically disposed with respect to the axis is arranged on the inner drum body.

[0035] The difference between the preferred embodiment 4 and the preferred embodiment 3 lies in that the washing machine is not limited to be the drum washing machine, and it may also be a pulsator washing machine or other types of washing machine.