Ice cream mixing drum

Abstract

The invention relates to an ice cream mixing drum belonging to food processing machinery. The ice cream mixing drum comprises a cylinder body, a drive shaft, a propeller and a heat exchange sleeve, wherein a raw material inlet is arranged at one side of the cylinder body, an ice cream output valve is arranged at the other side of the cylinder body, the propeller is installed in the cylinder body, the drive shaft is connected with the propeller, the heat exchange sleeve encircles the cylinder body and is provided with a working medium inlet and a working medium outlet, and a continuous inside spiral groove is arranged between the working medium inlet and the working medium outlet on the inner wall of the heat exchange sleeve and forms a continuous spiral channel with the outer wall of the cylinder body. In the invention, a working medium channel in a continuous spiral shape combined by the inside spiral groove of the heat exchange sleeve and the outer wall of the cylinder body forces working medium to flow along the spiral channel; the working medium exchanges heat with the cylinder body with longer time and larger contact area when flowing, thereby having the advantage of high heat exchange efficiency; and pasteurization is carried out on ice cream in a stirring cylinder body when heated to 60-80 DEG C. The invention is suitable for use on various ice cream freezers and slush machines.

Description

technical field [0001] The invention belongs to food processing machinery, in particular to an ice cream mixer. Background technique [0002] Generally, ice cream mixing devices common in the market use a set of refrigeration system to cool down the mixing drum containing the ice cream raw materials, and continuously stir the ice cream raw materials in a low temperature environment to produce ice cream. There are two common structures; one uses a coil Surrounding the cylinder of the mixing drum, Freon flows through the coil to cool the cylinder, and the other surrounds the cylinder of the mixing drum with a hollow sleeve, and Freon flows through the hollow sleeve to cool the cylinder. The structure that surrounds the cylinder with a coil has the disadvantage of a small effective contact area between the coil and the cylinder, and the structure that surrounds the cylinder with a hollow sleeve has the disadvantage of freon taking a shortcut in the hollow sleeve, both of which ...

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Problems solved by technology

The structure that surrounds the cylinder with a coil has the disadvantage of a small effective contact area between the coil and the cylinder, and the structure that surrounds the cylinder with a hollow sleeve has the disadvantage of freon taking a shortcut in the hollow sleeve, both of which are greatly Reduce the heat exchange efficiency of the refrigeration system and prolong the cooling speed of the ice cream; moreover, the above two systems are not easy to achieve the disinfection function of heating to 80 degrees for high-temperature pasteurization of the ice cream in the mixing tank, so it is necessary to improve

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