Heater and an outdoor unit including the same for a refrigerator

Abstract

An outdoor unit includes a casing including four side surfaces. The outdoor unit includes an outdoor heat exchanger disposed in the casing, including four heat exchange surfaces corresponding to the side surfaces of the casing, and including an opening disposed on side surfaces of the outdoor heat exchanger. A heater is in a shape of a rectangular frame along a lower end portion of the outdoor heat exchanger, and avoids freeze of drain water on the outdoor heat exchanger. The heater includes hinges allowing the heater to fold longitudinally.

1 . A heater for avoiding freeze of drain water on an outdoor heat exchanger of an outdoor unit for a refrigerator, wherein
 the outdoor unit includes   a casing including four side surfaces and   the outdoor heat exchanger disposed in the casing, including four heat exchange surfaces corresponding to the side surfaces of the casing, and including an opening disposed on side surfaces of the outdoor heat exchanger,   the heater is in a shape of a rectangular frame along a lower end portion of the outdoor heat exchanger, and   the heater includes hinges allowing the heater to fold longitudinally.   
     
     
         2 . The heater of  claim 1 , comprising:
 a first heating portion and a second heating portion that are aligned longitudinally, wherein   the hinges are wirings connecting the first heating portion with the second heating portion.   
     
     
         3 . The heater of  claim 2 , wherein
 the first heating portion includes a body and end portions,   the second heating portion includes a body and end portions,   the bodies extend along a bottom board of the casing,   the end portions are bent upward from the bodies, and   the end portions are connected with the wirings.   
     
     
         4 . An outdoor unit for a refrigerator, comprising:
 the heater of  claim 1 .   
     
     
         5 . The outdoor unit for the refrigerator of  claim 4 , comprising:
 at least one compressor disposed inside the outdoor heat exchanger.   
     
     
         6 . An outdoor unit for a refrigerator, comprising:
 the heater of  claim 2 .   
     
     
         7 . The outdoor unit for the refrigerator of  claim 6 , comprising:
 at least one compressor disposed inside the outdoor heat exchanger.   
     
     
         8 . An outdoor unit for a refrigerator, comprising:
 the heater of  claim 3 .   
     
     
         9 . The outdoor unit for the refrigerator of  claim 8 , comprising:
 at least one compressor disposed inside the outdoor heat exchanger.