Stirring Apparatus for Direct Expansion Evaporator of Ice Cream or Yogurt Machine

A stirring apparatus for a direct expansion evaporation of ice cream or yogurt machine, which comprises a freezing cylinder having a mixing chamber therein, an inner surface, an inlet, and an outlet, the stirring apparatus comprising:

• a stirring beater, configured for being coaxially disposed in the mixing chamber of the freezing cylinder in a rotatable manner for pushing a mixture to flow in the mixing chamber in an inner spiral manner while stirring, smashing and mixing the mixture which is served as frozen product out of the freezing cylinder, comprising:
• a front supporter configured for being rotatably mounted to a front end of the freezing cylinder,
• one or more helical stirring paddles, and
• a central frame configured to support said one or more helical stirring paddles spirally extended from said front supporter to a rear end portion thereof;
• and
• one or more scraper blades provided along said one or more stirring paddles respectively to define a helical diameter for matching with an inner diameter of the mixing chamber of the freezing cylinder, such that each of said one or more scraper blades is capable of scrapping the mixture frozen on the inner surface of said freezing cylinder while a rotation of said stirring beater within the mixing chamber of the freezing cylinder.