Ultrasonic homogenizer

An ultrasonic homogenizer, comprising:

• an ultrasonic transducer;
• an ultrasonic horn having a top face, a bottom face opposite to the top face, and an outer side face provided between and connected to the top face and the bottom face, the top face being connected to the ultrasonic transducer, the bottom face being configured to irradiate an ultrasonic wave generated by the ultrasonic transducer;
• a holder having an inner bottom face and an inner side face connected to the inner bottom face, the ultrasonic horn being provided in the holder such that the bottom face of the ultrasonic horn faces the inner bottom face of the holder and such that the inner side face of the holder surrounds and faces the outer side face of the ultrasonic horn;
• an intake port that is connected to the inner bottom face of the holder and through which a mixture liquid flows into the holder, the intake port having an intake opening on the bottom face of the holder, the intake opening having an opening width;
• an ejection port that is provided on the holder above the intake port and through which the mixture liquid is discharged from the holder;
• an opening area of the intake opening being smaller than an irradiating area of the bottom face of the ultrasonic horn;
• and
• a distance between the bottom face of the ultrasonic horn and the inner bottom face of the holder being smaller than the opening width of the intake opening.