Washing machine

Patent metadata

Field	Value
Publication number	US-11530506-B2
Application number	US-201916976291-A
Country	US
Kind code	B2
Filing date	Feb 21, 2019
Priority date	Feb 27, 2018
Publication date	Dec 20, 2022
Grant date	Dec 20, 2022

Abstract

An inner drum cover is provided at a drum opening of an inner drum of a washing machine, the inner drum cover is used to open or close the drum opening, so that the inner drum forms a closed container after the drum opening is closed by the inner drum cover. The inner drum can perform washing after the inner drum cover is correspondingly fastened to the drum opening, so that clothes only come into contact with washing water in the sealed inner drum in a washing process. In this way, a case in which the clothes are contaminated because washing water between the inner drum and an outer drum flows into the inner drum is avoided, washing cleanliness of the washing machine is greatly improved, and incomplete washing of the clothes caused by contamination of the washing water between the inner drum and the outer drum is avoided.

First claim

The invention claimed is:

1. A washing machine, comprising:
a door cover;
an inner drum; and
an inner drum cover arranged at a drum opening of the inner drum of the washing machine; wherein,
an axis of the inner drum extends horizontally or gradually inclines downward from front to rear;
the inner drum cover is configured to open or close the drum opening, the inner drum is a closed container after the drum opening is closed by the inner drum cover;
the inner drum cover is independently arranged from the door cover, so that the drum opening is opened or closed by operating the inner drum cover separately from the door cover, and
an outer periphery of the inner drum cover is sealed and contacted with the drum opening to seal the drum opening; and
a bending portion being horizontally bent is arranged at a periphery of the drum opening,
the bending portion extends in a direction away from a bottom of the inner drum, the bottom of the inner drum is a rear wall of the inner drum,
an extending end of the bending portion is arranged on a front end side of the drum opening,
the bending portion includes a first bending portion and a second bending portion that are connected in an extending direction,
the first bending portion is a tube structure horizontally extending, and the second bending portion is a conical structure, a diameter of a small end of the second bending portion is less than a diameter of a large end of the second bending portion,
the small end is correspondingly connected to the first bending portion, and the large end forms the extending end of the second bending portion,
the inner drum cover is provided with a flange being bent away from a front sidewall of the inner drum,
the flange includes a first flange and a second flange, and
the first flange is correspondingly sealed and in contact with the first bending portion, and the second flange correspondingly is sealed and in contact with the second bending portion.

2. The washing machine according to claim 1 , wherein at least one sealing ring is arranged at a position at which the inner drum cover is sealed and contacted with the drum opening, and
two sides of the sealing ring are sealed contacted with the inner drum cover and the drum opening respectively.

3. The washing machine according to claim 1 , wherein the inner drum is provided with a drain opening, and a drain valve is installed at the drain opening;
the washing machine is provided with a positioning and locking mechanism that fixes the inner drum when the inner drum rotates to a fixed drainage position;
the washing machine is provided with a valve plug opening mechanism for opening the drain valve after the inner drum rotates to the fixed drainage position, so that when the washing machine drains water, and after the inner drum rotates to the fixed drainage position, the drain valve is opened to drain away washing water in the inner drum.

4. The washing machine according to claim 1 , wherein a drain opening is arranged on a side wall of the inner drum, and a sealing valve which moves along a radial direction of the inner drum to be open and close is arranged at the drain opening, and
a valve body of the sealing valve is moved in a plane parallel with the bottom of the inner drum by a counterweight under an action of centrifugal force, to open the drain opening on the side wall of the inner drum when the inner drum rotates at a high speed.

5. The washing machine according to claim 4 , wherein the side wall of the inner drum is provided with at least one lifting rib extending along a generatrix of the inner drum, and each at least one lifting rib is hollow inside,
a hollow part of each at least one lifting rib communicates with a respective drain opening arranged on the side wall of the inner drum, and
each drain opening arranged in the hollow part of each at least one lifting rib includes a respective sealing valve.

6. The washing machine according to claim 1 , wherein a center of the bottom of the inner drum is connected to one end of a water inlet pipe,
another end of the water inlet pipe is connected to a water inlet box of the washing machine, to feed water into the inner drum through the center of the bottom of the inner drum.

7. The washing machine according to claim 1 , wherein a length of the first and second flanges is greater than a length of the first and second bending portions.

8. The washing machine according to claim 2 , wherein the sealing ring is made of a material having elastic deformation.

9. The washing machine according to claim 3 , wherein the drain opening is arranged at an outer periphery of the bottom of the inner drum.

Assignees

• Qingdao Haier Washing Mach Co
• Qingdao Haier Smart Tech R & D Co Ltd
• Haier Smart Home Co Ltd
• Qingdao Haier Smart Tech R & D Co Ltd

Inventors

• Liu Hua
• Sun Hongxia
• Li Yimin
• Lao Chunfeng
• Hao Xinghui
• Wu Di
• Liu Haitao

Classifications

• D06F37/04

  adapted for rotation or oscillation about a horizontal or inclined axis · CPC title

• Y02B40/00

  Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers · CPC title

• D06F39/088

  Liquid supply arrangements · CPC title

• D06F37/06

  Ribs, lifters, or rubbing means forming part of the receptacle · CPC title

• D06F23/025 Primary

  with a rotatable imperforate tub · CPC title