Noise reduction device of refrigeration equipment

Abstract

A noise reduction device for reducing noise in refrigeration equipment includes at least one transition tube having a diameter gradually increasing from a capillary of the refrigeration equipment to an evaporator of the refrigeration equipment. The refrigerant liquid is circulated through the noise reduction device.

What is claimed is: 
     
         1 . A noise reduction device in refrigeration equipment, the noise reduction device comprising at least one transition tube having a diameter gradually increasing from a capillary of the refrigeration equipment to an evaporator of the refrigeration equipment, wherein refrigerant liquid is circulated through the noise reduction device. 
     
     
         2 . The noise reduction device of  claim 1  comprising a first transition tube, a second transition tube, and a coupling portion, wherein:
 a first end of the first transition tube is coupled to the capillary, and a second end opposite to the first end of the first transition tube is coupled to a first end of the second transition tube through the coupling portion; 
 a second end opposite to the first end of the second transition tube is coupled to the evaporator; 
 an inner diameter of the first transition tube is greater than an inner diameter of the capillary; 
 an inner diameter of the second transition tube is greater than the inner diameter of the first transition tube; 
 an inner diameter of the coupling portion gradually increases from the first transition tube to the second transition tube; 
 the inner diameter of the coupling portion directly coupled to the first transition tube is same as the inner diameter of the first transition tube; 
 the inner diameter of the coupling portion directly coupled to the second transition tube is same as the inner diameter of the second transition tube. 
 
     
     
         3 . The noise reduction device of  claim 1 , wherein:
 the at least one transition tube is coupled to the capillary by welding; and   the at least one transition tube is coupled to the evaporator by welding.   
     
     
         4 . The noise reduction device of  claim 1 , further comprising a damping adhesive covered around the at least one transition tube. 
     
     
         5 . The noise reduction device of  claim 4 , wherein the damping adhesive is covered around each point of the at least one transition tube where the inner diameter of the transition tube changes. 
     
     
         6 . The noise reduction device of  claim 1 , wherein the at least one transition tube is an integrally formed piece. 
     
     
         7 . The noise reduction device of  claim 1 , wherein the at least one transition tube is made of copper. 
     
     
         8 . The noise reduction device of  claim 1 , wherein an inner wall of the at least one transition tube is smooth. 
     
     
         9 . The noise reduction device of  claim 1 , wherein an end of the at least one transition tube coupled to the evaporator is a rounded connection joint. 
     
     
         10 . Refrigeration equipment comprising:
 a compressor;   a condenser;   a capillary;   an evaporator; and   a noise reduction device comprising at least one transition tube having a diameter gradually increasing from the capillary to the evaporator, wherein:   refrigerant liquid is circulated through the compressor, the condenser, the capillary, and the evaporator.   
     
     
         11 . The refrigeration equipment of  claim 10 , wherein:
 the noise reduction device comprises a first transition tube, a second transition tube, and a coupling portion;   a first end of the first transition tube is coupled to the capillary, and a second end opposite to the first end of the first transition tube is coupled to a first end of the second transition tube through the coupling portion;   a second end opposite to the first end of the second transition tube is coupled to the evaporator;   an inner diameter of the first transition tube is greater than an inner diameter of the capillary;   an inner diameter of the second transition tube is greater than the inner diameter of the first transition tube;   an inner diameter of the coupling portion gradually increases from the first transition tube to the second transition tube;   the inner diameter of the coupling portion directly coupled to the first transition tube is same as the inner diameter of the first transition tube;   the inner diameter of the coupling portion directly coupled to the second transition tube is same as the inner diameter of the second transition tube.   
     
     
         12 . The refrigeration equipment of  claim 10 , wherein:
 the at least one transition tube is coupled to the capillary by welding; and   the at least one transition tube is coupled to the evaporator by welding.   
     
     
         13 . The refrigeration equipment of  claim 10 , wherein the noise reduction device further comprises a damping adhesive covered around the at least one transition tube. 
     
     
         14 . The refrigeration equipment of  claim 13 , wherein the damping adhesive is covered around each point of the at least one transition tube where the inner diameter of the transition tube changes. 
     
     
         15 . The refrigeration equipment of  claim 10 , wherein the at least one transition tube is an integrally formed piece. 
     
     
         16 . The refrigeration equipment of  claim 10 , wherein the at least one transition tube is made of copper. 
     
     
         17 . The refrigeration equipment of  claim 10 , wherein an inner wall of the at least one transition tube is smooth. 
     
     
         18 . The refrigeration equipment of  claim 10 , wherein an end of the at least one transition tube coupled to the evaporator is a rounded connection joint.