Oil mist remover

An oil mist remover comprising:

• a main body into which air containing oil mist is sucked through a suction hole and then discharged through an exhaust hole after said oil mist is removed;
• a cylindrical rotary filter provided in said main body;
• a cylindrical fixed filter provided in said main body, said cylindrical fixed filter surrounding said rotary filter;
• a fan provided coaxially with and in said cylindrical rotary filter so that said fan rotates together with said rotary filter;
• a driving means which drives said fan and rotary filter, said driving means bringing said air containing oil mist into said main body, sending said air to said exhaust hole through said rotary filter and fixed filter so that said oil mist is adsorbed on said filters and then forced out of said filters;
• a spiral ventilation chamber provided in said main body and surrounding said fixed filter, said ventilation chamber being designed so that said air after passing through said fixed filter flows in said ventilation chamber from an inner side to an outer side, and to said exhaust hole, said ventilation chamber being further designed so that its sectional area gradually increases from said inner side to said outer side;
• a guide hole provided between the outer side of said ventilation chamber and said exhaust hole, said guide hole changing the flow direction of the air coming from said outer side so as to guide such air flow to said guide hole;
• an oil drain hole provided at said outer side end of said ventilation chamber so that said oil, which has been forced into said ventilation chamber through said rotary filter and fixed filter, is drained out of said ventilation chamber;
• and
• a drain chamber wherein said oil drained out through said oil drain hole is temporarily stored therein and then forced out of said main body by air pressure.