Refrigerator

A refrigerator, comprising:

• a compressor configured to compress a refrigerant;
• a condenser configured to condense the refrigerant being introduced from the compressor;
• a capillary tube configured to expand the refrigerant being introduced from the condenser;
• an evaporator configured to evaporate the refrigerant being introduced from the capillary tube to absorb heat of a surrounding environment and to cool the surrounding environment;
• an evaporator pipe connected to a discharging port of the evaporator;
• a compressor pipe connected to an intake port of the compressor;
• and
• a suction pipe configured to connect the evaporator pipe to the compressor pipe to guide the refrigerant being discharged from the evaporator to the compressor,
• wherein the suction pipe comprises:
• a first pipe;
• a plurality of second pipes coupled to both end portion of the first pipe;
• and
• welding portions configured to couple the first pipe to the second pipes, and
• wherein the capillary tube passes through the welding portions while at least one portion of the capillary tube is disposed at an inside the first pipe.

A method of manufacturing a suction pipe assembly provided with a first pipe, a plurality of second pipes being coupled to both end portions of the first pipe to form a suction pipe in cooperation with the first pipe, and a capillary tube which has a spiral shape and at least a portion of which is inserted into an inside the first pipe, the method comprising:

• preparing a first pipe, a plurality of second pipes to be coupled to both end portions of the first pipe, and a capillary tube;
• forming at least one portion of the capillary tube in a spiral shape having an outer diameter smaller than an inner diameter of the first pipe;
• inserting the spiral-shaped portion of the capillary tube into an inside the first pipe through openings of the both end portions of the first pipe;
• coupling the second pipes to the both end portions of the first pipe, respectively, by welding;
• and
• fixing the spiral-shaped portion of the capillary tube to an inside the first pipe by pressing the first pipe.

A refrigerator, comprising:

• a compressor configured to compress a refrigerant;
• a condenser configured to condense the refrigerant that it receives from the compressor;
• a pipe to transport the condensed refrigerant through a plurality of walls of the refrigerator;
• a capillary tube configured to expand the refrigerant that is received from the pipe after the refrigerant has been transported through the plurality of walls of the refrigerator;
• an evaporator configured to evaporate the refrigerant being introduced from the capillary tube to absorb heat of a surrounding environment and to cool the surrounding environment;
• a suction pipe to transport the refrigerant from the evaporator to the compressor;
• wherein the capillary tube is inserted into the suction pipe such in a spiral fashion so as to directly exchange heat with the refrigerant at an inside the suction pipe;
• wherein spiral of the capillary tube is kept at a predetermined pitch to minimize noise;
• wherein the suction pipe is compressed such that the inner circumference of the suction pipe contacts that outer circumference of the capillary pipe at two opposing surfaces while the other two opposing surfaces is spaced apart from the suction pipe.