Appliance having noise reduction device

Patent metadata

Field	Value
Publication number	US-9299332-B2
Application number	US-201313890395-A
Country	US
Kind code	B2
Filing date	May 9, 2013
Priority date	May 10, 2012
Publication date	Mar 29, 2016
Grant date	Mar 29, 2016

Abstract

An appliance is provided including a noise reduction device to reduce noise generated within a main body of the appliance. The noise reduction device may include a sound absorbing plate having a plurality of sound absorbing holes and a resonance member, one side of which is open and having a hollow portion, so that noise generated by a drive of the appliance passes through the noise reduction device, in order to efficiently reduce noise in the appliance and achieve an increase of internal capacity, a decrease in weight, and a reduction in manufacturing costs for the appliance.

First claim

What is claimed is:

1. An appliance, comprising:
a cabinet that defines an external appearance thereof;
a drive provided within the cabinet to drive the appliance; and
a noise reduction device to reduce noise generated by the drive, wherein the noise reduction device includes:
a resonance member, at least one side of which is an open and including a hollow portion formed therein, wherein the resonance member has one or more closed surfaces except for the at least one open side; and
a sound absorbing plate coupled to the at least one open side, the sound absorbing plate having a plurality of sound absorbing holes, wherein the sound absorbing plate is directed toward the drive of the appliance.

2. The appliance according to claim 1 , wherein the noise reduction device is provided at one side of the cabinet.

3. The appliance according to claim 1 , wherein the noise reduction device is mounted fully within the cabinet.

4. The appliance according to claim 1 , wherein the noise reduction device replaces a portion of the cabinet, and one surface of the resonance member is exposed to the outside of the cabinet.

5. The appliance according to claim 1 , wherein the noise reduction device is mounted to contact an inner side surface of the cabinet.

6. The appliance according to claim 1 , wherein the sound absorbing plate is disposed inward of the cabinet.

7. The appliance according to claim 1 , wherein the sound absorbing plate is fastened to the at least one open side of the resonance member.

8. The appliance according to claim 1 , wherein the sound absorbing plate has a thickness of approximately 0.5 mm to approximately 2 mm.

9. The appliance according to claim 1 , wherein each of the plurality of sound absorbing holes has a diameter of approximately 0.05 mm to approximately 1 mm.

10. The appliance according to claim 1 , wherein the resonance member has a rectangular shape.

11. The appliance according to claim 1 , wherein at least one side of the resonance member includes a concaved portion.

12. The appliance according to claim 1 , wherein the resonance member and the sound absorbing member are integrally formed.

13. The appliance according to claim 1 , further including:
a tub provided within the cabinet to define an object receiving space;
a rack provided in the tub to fix an object;
a spraying arm provided at a lower portion of the rack to spray washing water toward the object; and
a sump that receives the washing water supplied to the spraying arm, wherein the drive includes at least one of a washing water spraying pump provided within the cabinet to supply the washing water to the spraying arm, and a drainage pump to discharge the washing water recovered after washing.

14. The appliance according to claim 13 , further including:
a door provided in the cabinet to open and close the object receiving space, wherein the noise reduction device is provided in a concave portion formed at a lower side of the door.

Assignees

• Je Byoungsoo
• Lg Electronics Inc

Inventors

• Je Byoungsoo

Classifications

• F24F2013/245

  using resonance · CPC title

• G10K11/002 Primary

  Devices for damping, suppressing, obstructing or conducting sound in acoustic devices (G10K1/06 - G10K1/10 take precedence; for electro-mechanical transducers for communication H04R3/002) · CPC title

• F24F13/24

  Means for preventing or suppressing noise · CPC title

• G10K11/172

  using resonance effects · CPC title

• A47L9/0081

  Means for exhaust-air diffusion; Means for sound or vibration damping · CPC title