Washing machine

A washing machine comprising:

• a cabinet configured to define an exterior appearance thereof;
• a tub installed in the cabinet to hold wash water therein;
• a drum rotatably installed in the tub to accommodate laundry therein;
• at least one venting portion provided in an upper portion of the tub to communicate with an outside of the tub;
• and
• a ventilation part provided in a lower portion of the tub to communicate with an inside of the tub, and
• wherein convection current of internal air of the tub generated via the venting portion and the ventilation part,
• wherein the venting portion or the ventilation part comprises a check valve,
• wherein the ventilation part comprises a valve supporting part so that the check valve is supported and installed therein,
• wherein the check valve comprises a flapper and a flapper supporting part is provided with the flapper as one body, and
• wherein the flapper supporting part comprises a hooking projection hooked to the valve supporting part and a flexible projection spaced apart a predetermine distance from the hooking projection, the flexible projection elastically transformable.

A washing machine comprising:

• a cabinet configured to define an exterior appearance thereof;
• a tub installed in the cabinet to hold wash water therein;
• a drum rotatably installed in the tub to accommodate laundry therein;
• at least one venting portion provided in an upper portion of the tub to communicate with an outside of the tub;
• and
• a ventilation part provided in a lower portion of the tub to communicate with an inside of the tub, and
• wherein convection current of internal air of the tub generated via the venting portion and the ventilation part,
• wherein an end of the ventilation part is in communication with a rear lower portion of the tub and another end of the ventilation part is extended toward a top of the cabinet from the tub, and
• wherein the ventilation part is located in the cabinet and sealed from an outside of the cabinet.