Automatic detergent supply device and washing machine having the same

A washing machine comprising:

• a main body;
• a washing tub which is rotatable and disposed inside the main body to accommodate laundry;
• and
• a detergent supply device configured to supply detergent to the washing tub,
• wherein the detergent supply device comprises:
• a detergent housing disposed inside the main body and formed with a flow path through which the detergent is suppliable to the washing tub;
• a detergent case to be disposed inside the detergent housing, to store the detergent inside therein and formed with a detergent outlet through which the detergent stored inside the detergent case is discharged;
• and
• a detergent pump to be connected to the detergent outlet to supply the detergent stored in the detergent case to the flow path,
• wherein the detergent case includes a guide member and the detergent outlet of the detergent case is coupleable to the guide member which covers a part of an upper portion of the detergent outlet while coupled to the detergent outlet.