Multi-unit double-layer integrated evaporator of ice cream maker

Abstract

The invention discloses a multi-unit double-layer integrated evaporator of an ice cream maker, comprising an outer sleeve and an inner barrel used for installing a stirrer, wherein the outer sleeve is sleeved on the inner barrel, the outer sleeve and the inner barrel are integrally formed and are combined into a whole at the end face, a cavity is formed between the outer sleeve and the inner barrel, the junction between the outer sleeve and the inner barrel at the end face is provided with a freezing medium inlet and a freezing medium outlet which are communicated with the cavity, and evaporative refrigeration is carried out by freezing media through the cavity. The freezing media flows linearly in the cavity along the axial direction thereof, namely, the freezing media evaporates linearly in the flowing process, thereby fast transmitting refrigerating output to ice cream in the inner barrel, realizing fast refrigeration and leading to high refrigeration efficiency; because the outer sleeve and the inner barrel are integrally formed, the roundness of inner holes of the inner barrel can be improved so that the frost scraping efficiency can be increased; and besides, the blow-by phenomenon generated among intervals of spirals of the telescopic cylindrical evaporator in the prior art is also avoided.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to an evaporator for commercial or household ice cream machines and similar products. Background technique [0002] At present, commonly used evaporators for ice cream machines mainly include coiled tube evaporators, jacketed evaporators and jacketed polarized refrigeration evaporators. [0003] (1) The coiled tube evaporator uses a spiral copper tube to wind on the outer wall of the stainless steel tube. The space inside the stainless steel tube is used to hold ice cream. During operation, the refrigerant undergoes indirect spiral evaporation cooling through the copper tube, and the copper tube will The cooling capacity is transmitted to the stainless steel tube, and then transferred to the ice cream in the stainless steel tube. The disadvantage is that due to the limitation of the wall thickness of the copper tube and stainless steel tube, the cooling speed is slow, the cool...

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Problems solved by technology

[0003] (1) The coiled tube evaporator uses a spiral copper tube to wind on the outer wall of the stainless steel tube. The space inside the stainless steel tube is used to hold ice cream. During operation, the refrigerant undergoes indirect spiral evaporation cooling through the copper tube, and the copper tube will The cooling capacity is transmitted to the stainless steel tube, and then transferred to the ice cream in the stainless steel tube. The disadvantage is that due to the limitation of the wall thickness of the copper tube and the stainless steel tube, the cooling speed is slow, the cooling efficiency is low, and the energy consumption is high.

This method can carry out multi-stage independent control refrigeration on an evaporator, and can open one or more refrigeration chambers for refrigeration according to the needs of the system, and has the advantage of high refrigeration efficiency with a sleeve structure, but its disadvantages are: due to the use of multiple The extremely sleeve cylinder increases the machining accuracy and difficulty, and increases the manufacturing cost; in addition, because the structure of this type of evaporator is very complicated, the maintenance rate is high and the maintenance difficulty is relatively high

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