Evaporator and refrigerator comprising same

A refrigerator comprising:

• a cabinet having a freezing chamber;
• and
• an evaporator installed in the freezing chamber,
• wherein the evaporator includes:
• an evaporator case having two coupled case sheets and having a quadrangular box shape in which a lower surface portion, side surface portions, and an upper surface portion are provided and both sides thereof are open;
• a cooling tube left as an empty space between the two case sheets and forming a cooling flow channel in which a refrigerant flows;
• and
• a sheath heater disposed to be spaced apart from the lower surface portion outwards at a predetermined distance and generating heat based on power being applied such that heat for defrosting is transferred to the evaporator case,
• wherein the sheath heater and the cooling tube are arranged to be non-overlapping in a thickness direction of the evaporator case,
• wherein the evaporator case includes a fixing member that is coupled to the sheath heater to fix the sheath heater at a predetermined distance from the evaporator case, and
• wherein the fixing member protrudes from the evaporator case to surround the sheath heater together with the evaporator case.