Drum washing machine

Patent metadata

Field	Value
Publication number	US-11220771-B2
Application number	US-201816612185-A
Country	US
Kind code	B2
Filing date	May 8, 2018
Priority date	May 9, 2017
Publication date	Jan 11, 2022
Grant date	Jan 11, 2022

Abstract

A drum washing machine comprises a machine body, a door body, an inner drum and a water feeding device. The inner drum is rotatably arranged in the machine body, and holds water in a washing. A front part of the inner drum is provided with an input port for taking and putting clothes. The door body is mounted at a front part of the machine body corresponding to the input port of the inner drum for opening or closing the input port. An end with the input port of the inner drum is hermetically connected with the door body in a relatively rotating manner. The water feeding device includes a first water feeding pipe connected with an external water source, a water collection sump corresponding to the first water feeding pipe arranged on the door body, and a second water feeding pipe arranged in the door body.

First claim

The invention claimed is:

1. A drum washing machine, comprising:
a machine body;
a door body;
an inner drum; and
a water feeding device, wherein
the inner drum is rotatably arranged in the machine body, and the inner drum holds water during a washing, a front part of the inner drum is provided with an input port for taking out and putting in items,
the door body is mounted at a front part of the machine body corresponding to the input port of the inner drum for opening or closing the input port, and an end with the input port of the inner drum is hermetically connected with the door body in a relatively rotating manner,
the water feeding device includes a first water feeding pipe, a water collection sump and a second water feeding pipe, the first water feeding pipe is connected with an external water source, the water collection sump is arranged on the door body and corresponds to the first water feeding pipe, and the second water feeding pipe is arranged in the door body for communicating the water collection sump with an interior of the inner drum, wherein
the machine body is provided with an opening corresponding to the input port of the inner drum, the door body includes an outer door and an inner door, the inner door is rotatably mounted on the outer door,
when the door body is in a closed state, the outer door hermetically closes the opening in the machine body, and the inner door is hermetically connected with the inner drum,
an inner side of the outer door is connected with a shaft body through a vibration absorption device, the inner door is rotatably mounted on the shaft body through a bearing, and
the shaft body is internally hollow, one end of the second water feeding pipe communicates with the water collection sump, and another end of the second water feeding pipe communicates with the inner drum through the shaft body.

2. The drum washing machine according to claim 1 , wherein the water collection sump is arranged at a top of the outer door.

3. The drum washing machine according to claim 1 , wherein the outer door comprises an outer door cover covering the opening on the outside of the machine body, and an outer door body extending into the opening of the machine body,
a side wall of the top of the outer door body is partially downwards sunken to form the water collection sump, and an outlet end of the first water feeding pipe is located above the water collection sump.

4. The drum washing machine according to claim 1 , wherein the vibration absorption device comprises at least one vibration absorption spring and a connection plate, one end of each vibration absorption spring is mounted on an inner side of the outer door; another end of each vibration absorption spring is connected with the connection plate, and the connection plate is fixedly connected with the shaft body,
a bearing pedestal is fixed on a center of an outer side of the inner door, and the bearing is mounted in the bearing pedestal and is in interference fit with the shaft body.

5. The drum washing machine according to claim 1 , wherein a side wall of the outer door is connected with a side wall of the inner door through an elastic sealing sleeve,
one end of the elastic sealing sleeve is hermetically and fixedly connected with the side wall of the outer door, and another end of the elastic sealing sleeve is kept in seal with the side wall of the inner door, and
a closed cavity is formed by the outer door, the elastic sealing sleeve and the inner door; and the second water feeding pipe is arranged in the closed cavity.

6. The drum washing machine according to claim 1 , wherein the water feeding device comprises:
a water box, the first water feeding pipe communicates with the water box through a first connection hose, and the second water feeding pipe communicates with the water collection sump through a second connection hose.

7. The drum washing machine according to claim 1 , comprising:
an outer drum, wherein a front end of the outer drum is fixed on an inner wall of the machine body, the inner drum is rotatably arranged in the outer drum, and a centrifugal valve is arranged on the side wall of the inner drum, wherein
during the washing, the centrifugal valve is configured to be closed, water is held in the inner drum, and no water exists between the inner drum and the outer drum, and during a dewatering, the centrifugal valve is configured to be opened, and washing water is drained to a space between the inner drum and the outer drum through the centrifugal valve and discharged by the outer drum.

8. The drum washing machine according to claim 7 , wherein a diameter of the end with the input port of the inner drum is smaller than a diameter of an inner drum bottom, a side wall of the inner drum is inclined from the end with the input port to the inner drum bottom in a direction away from a central axis of the inner drum, and a plurality of centrifugal valves are arranged and are uniformly distributed along a circumference of the side wall, close to the inner drum bottom of the inner drum.

9. The drum washing machine according to claim 7 , comprising:
a center rotating shaft;
a driving device; and
a supporting vibration absorption device, wherein the inner drum is connected with the driving device through the center rotating shaft in a transmission way,
the supporting vibration absorption device comprises includes:
a supporting frame;
a vibration absorption hanging spring; and
a vibration absorber, wherein one end of the supporting frame is sleeved on the center rotating shaft and is connected with the center rotating shaft through a bearing, and another end of the supporting frame extends to an outer periphery of the outer drum for mounting the hanging spring and the vibration absorber.

10. The drum washing machine according to claim 3 , wherein a side wall of the outer door is connected with a side wall of the inner door through an elastic sealing sleeve,
one end of the elastic sealing sleeve is hermetically and fixedly connected with the side wall of the outer door, and another end of the elastic sealing sleeve is kept in sealed with the side wall of the inner door, and
a closed cavity is formed by the outer door, the elastic sealing sleeve and the inner door; and the second water feeding pipe is arranged in the closed cavity.

11. The drum washing machine according to claim 4 , wherein a side wall of the outer door is connected with a side wall of the inner door through an elastic sealing sleeve,
one end of the elastic sealing sleeve is hermetically and fixedly connected with the side wall of the outer door, and another end of the elastic sealing sleeve is kept in sealed with the side wall of the inner door, and
a closed cavity is formed by the outer door, the elastic sealing sleeve and the inner door; and the second water feeding pipe is arranged in the closed cavity.

12. The drum washing machine according to claim 8 , comprising:
a center rotating shaft;
a driving device; and
a supporting vibration absorption device, wherein the inner drum is connected with the driving device through the center rotating shaft in a transmission way,
the supporting vibration absorption device includes:
a supporting frame;
a vibration absorption hanging spring, and
a vibration absorber, wherein one end of the supporting frame is sleeved on the center rotating shaft and is connected with the center rotating shaft through a bearing, and another end of the supporting frame extends to an outer periphery of the outer drum for mounting the hanging spring and the vibration absorber.

Assignees

• Qingdao Haier Drum Washing Machine Co Ltd

Inventors

• Xu Sheng
• Lao Chunfeng
• Lv Yanfen
• Li Yimin
• Lv Peishi

Classifications

• D06F39/14

  Doors or covers; Securing means therefor · CPC title

• D06F39/088

  Liquid supply arrangements · CPC title

• D06F23/025 Primary

  with a rotatable imperforate tub · CPC title

• D06F23/02

  and rotating or oscillating about a horizontal axis · CPC title