IP Library › Granted Patent US 8,122,732
Granted Patent B2
US 8,122,732 · App. 12/440,358 · Granted Feb 28, 2012

Refrigerator with noise reduction structure using inverse phase sound wave

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Quick Facts
Patent No.
US 8,122,732
App. No.
12/440,358
Granted
Feb 28, 2012
Kind
B2
Abstract

Disclosed is a refrigerator having a noise reduction structure. According to the refrigerator, a branch pipe for reducing the intensive noise occurring from an impeller part is provided to a discharge pipe connected so that the refrigerant is discharged in a direction of a condenser from the impeller part. Therefore, the traveling sound wave of the noise traveling along the discharge pipe and the reverse sound wave traveling toward the branch pipe provided to the outer periphery of the discharge pipe meet each other, so that the both sound waves are cancelled to reduce the noise.

Claims (10)

1. A refrigerator having a noise reduction structure comprising:

an impeller part 12 compressing refrigerant;

a condenser 14 condensing the compressed refrigerant; and

a refrigerant discharge pipe 16 connecting the impeller part 12 and the condenser 14 ,

wherein the refrigerator further comprises a branch pipe 20 that is provided to an outer periphery of the discharge pipe 16 to bypass the refrigerant flowing in the discharge pipe 16 to an outside in a predetermined section,

wherein a traveling sound wave 22 of the refrigerant branched through an end of the branch pipe 20 from the discharge pipe 16 is converted into a reverse sound wave 24 having an inverse phase to the traveling sound wave 22 flowing in the discharge pipe 16 while traveling in the branch pipe 20 , and

wherein the reverse sound wave 24 re-joins into the discharge pipe 16 at the other end of the branch pipe 20 and is thus cancelled with the traveling sound wave 22 , and

wherein a diameter of the branch pipe 20 is between 25% and 100% of a wavelength of the travelling sound wave 22 .

2. The refrigerator according to claim 1 , wherein the branch pipe 20 is plurally provided along a longitudinal direction of the discharge pipe 16 .

3. The refrigerator according to claim 1 , wherein the branch pipe 20 is plurally provided along a circumferential direction of the outer periphery of the discharge pipe 16 .