Connector for hermetic compressor and suction device of working fluid using the same

Abstract

A connector for a hermetic compressor and a working fluid suction device using such a connector are provided. The compressor includes a suction pipe coupled to a casing so as to transfer working fluids into a silencer housed in the casing to attenuate noise. The connector includes a connector pipe extending between the suction pipe and the silencer and coupled to a communication pipe provided on an outer surface of the silencer, an enlarged-diameter part extending from the connector pipe toward the suction pipe at a predetermined angle; and a contact skirt provided at a leading edge of the enlarged-diameter part. The contact skirt comes into close contact with an inner circumferential surface of the casing, allowing working fluids to flow into the silencer without leakage, thus improving fluid flow into the compressor.

1 . A connector for a compressor, the compressor comprising a suction pipe coupled to a casing and configured to transfer working fluids into the casing, and a silencer configured to direct the working fluids toward a compression chamber of the compressor and to attenuate noise associated therewith, the connector comprising:
 a connector pipe extending between the suction pipe and the silencer, wherein the connector pipe is configured to direct working fluids into the silencer through a communication pipe provided on an exterior of the silencer;   an enlarged-diameter part extending from the connector pipe toward the suction pipe, wherein a central axis of the enlarged-diameter part intersects a central axis of the connector pipe at a predetermined angle; and   a contact skirt extending outward from a leading edge of the enlarged-diameter part, wherein an inner edge of the contact skirt is configured to come into close contact with an inner face of the casing.   
   
   
       2 . The connector of  claim 1 , wherein the communication pipe is provided on a lower portion of the silencer, and the enlarged-diameter part extends outward towards a rear of the communication pipe in a direction corresponding to a curved inner surface of the casing. 
   
   
       3 . The connector of  claim 2 , wherein an inner circumferential surface of the connector pipe comes into close contact with an outer circumferential surface of the communication pipe so as to couple the connector to the silencer. 
   
   
       4 . The connector of  claim 3 , wherein the connector pipe, the enlarged-diameter part, and the contact skirt are formed as a single unit made of an elastic material. 
   
   
       5 . The connector of  claim 1 , wherein the predetermined angle formed between the central axis of the enlarged diameter part and the central axis of the connector pipe is greater than 0° and less than 90°. 
   
   
       6 . A hermetic compressor comprising the connector of  claim 1 . 
   
   
       7 . A working fluid suction device for a compressor, the device comprising:
 a suction pipe coupled to a casing and configured to transfer working fluids into the casing;   a suction silencer having a communication pipe configured to receive the working fluids introduced through the suction pipe, wherein the suction silencer is configured to attenuate noise as it guides the working fluids toward a compression chamber; and   a connector coupled to the silencer, wherein a leading edge of the connector is configured to come into close contact with an inner circumferential surface of the casing, wherein the connector comprises:
 a connector pipe coupled to the communication pipe; 
 an enlarged-diameter part extending from the connector pipe; and 
 a contact skirt extending along a leading edge of the enlarged-diameter part, wherein the contact skirt is configured to come into close contact with the inner circumferential surface of the casing. 
   
   
   
       8 . The device of  claim 7 , wherein a diameter of the enlarged-diameter part increases as it extends toward the suction pipe. 
   
   
       9 . The device of  claim 8 , wherein the connector is made of an elastic material. 
   
   
       10 . The connector of  claim 7 , wherein the communication pipe extends outward from an outer circumference of the casing, and wherein an outer circumferential surface of the communication pipe is configured to be coupled to an inner circumferential surface of the connector pipe so as to couple the connector to the suction silencer. 
   
   
       11 . The connector of  claim 10 , wherein a central axis of the enlarged diameter part intersects a central axis of the connector pipe at an angle which is greater than 0° and less than 90°. 
   
   
       12 . The connector of  claim 7 , wherein the contact skirt is configured to conform to the inner circumferential surface of the casing so as to form a seal therebetween. 
   
   
       13 . A hermetic compressor comprising the working fluid suction device of  claim 7 . 
   
   
       14 . A working fluid suction device for a compressor, the device comprising:
 a suction pipe configured to direct working fluids into a casing;   a silencer configured to receive working fluids from the suction pipe, and to attenuate noise as it guides working fluids toward a compression chamber; and   a connector extending between the silencer and the suction pipe and configured to transfer working fluids therebetween, wherein the connector comprises:
 a connector pipe having a first end coupled to the silencer; and 
 an enlarged-diameter part extending from a second end of the connector pipe toward the suction pipe and positioned at a predetermined angle with respect to a longitudinal axis of the connector pipe. 
   
   
   
       15 . The device of  claim 14 , wherein a diameter of the enlarged-diameter part increases as it extends from the second end of the connector pipe toward the suction pipe. 
   
   
       16 . The device of  claim 15 , wherein the connector further comprises a contact skirt provided at a distal end of the enlarged-diameter part, wherein an inner face of the contact skirt is configured to come into close contact with an inner circumferential surface of the casing. 
   
   
       17 . The device of  claim 14 , wherein the connector is made of an elastic material. 
   
   
       18 . The device of  claim 14 , wherein the enlarged diameter part extends from the silencer toward an inner circumferential surface of the casing at a rear of the silencer such that an angle between the connector pipe and the enlarged-diameter part is greater than 0° and less than 90°. 
   
   
       19 . The device of  claim 14 , wherein a diameter of the enlarged diameter part is smallest at a first end thereof coupled to the connector pipe, and is largest at a second end thereof coupled to an inner surface of the casing. 
   
   
       20 . The device of  claim 14 , wherein a diameter of the enlarged diameter part increases or stays substantially the same as it progresses from a first end thereof coupled to the connector pipe towards a second end thereof coupled to an inner circumferential surface of the casing. 
   
   
       21 . A hermetic compressor comprising the working fluid suction device of  claim 14 . 
   
   
       22 . A fluid suction device for a compressor, comprising:
 a suction pipe configured to provide fluid to a casing;   a silencer provided in the casing;   a connector extending between the suction pipe and the silencer and configured to guide fluid from the suction pipe to the silencer, wherein the connector comprises:
 a first section configured to be coupled to the suction pipe; 
 a second section configured to be coupled to an inner circumferential surface of the casing; and 
 a third section provided between the first and second sections, wherein the third section is positioned at an acute angle with respect to the first section. 
   
   
   
       23 . The device of  claim 22 , wherein the first section comprises a pipe of substantially constant diameter that is configured to be coupled to an inlet pipe of the silencer. 
   
   
       24 . The device of  claim 23 , wherein a proximal end of the second section is configured to be coupled to a distal end of the first section, and a distal end of the second section is configured to be coupled to a proximal end of the third section, wherein a diameter of the second section is greater at its distal end than at its proximal end. 
   
   
       25 . The device of  claim 24 , wherein a diameter of the second section increases or stays substantially the same as it progresses from its proximal to its distal end. 
   
   
       26 . The device of  claim 24 , wherein the distal end of the third section comprises a seal configured to conform to a corresponding inner circumferential surface of the casing. 
   
   
       27 . The device of  claim 22 , wherein the connector comprises a single unit made of a flexible material. 
   
   
       28 . A hermetic compressor comprising the fluid suction device of  claim 22 .