Dehumidifier

A dehumidifier comprising:

• a condenser configured to condense a refrigerant;
• an evaporator configured to evaporate the refrigerant;
• and
• a heat transfer module configured to absorb heat from air flowing into the evaporator, and to transfer the heat to air discharged from the evaporator,
• wherein the heat transfer module comprises:
• a right module enclosing a right side of the evaporator;
• and
• a left module enclosing a left side of the evaporator,
• wherein each of the right module and the left module comprises:
• a plurality of side heat pipes each comprising two straight line parts, which extend in a left and right direction of the heat transfer module and are spaced apart from each other in a front and rear direction or the heat transfer module, and a connection part that connects the two straight line parts;
• and
• a plurality of side cooling fins connected to the plurality of side heat pipes and spaced apart from each other in the left and right direction.