Evaporator structure of ice cream machine with uniform refrigeration function
By designing a snake-shaped folding condensate tube, thermal head array and spiral diversion groove in the ice cream machine, the problem of uneven cooling of the ice cream mechanism is solved, and uniform refrigeration and efficient maintenance of the ice cream are achieved.
Patent Information
- Application Number
- CN202510626795.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-15
- Publication Date
- 2025-06-24
AI Technical Summary
The refrigeration of existing ice cream machines is uneven, which affects the texture and taste of the ice cream and is difficult to maintain.
A uniformly refrigerated ice cream machine evaporator structure is designed, including an ice making drum, an installation drum and a rotating tool. The condenser tube is set on the outside of the ice making drum in a serpentine shape, the thermal conduction end array fills the gap between the condenser tube, and the flow channel is designed to force the mixture to move along the spiral path to improve heat exchange efficiency.
It achieves uniform refrigeration of ice cream, reduces the difficulty of manufacturing and maintenance, and improves the delicate texture and consistency of ice cream.
Smart Images
Figure CN120194450A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of ice cream machines, and specifically to an evaporator structure of an ice cream machine with uniform refrigeration. Background Art
[0002] A soft ice cream machine is an automated electromechanical device specifically used for producing soft ice cream. The evaporator of a soft ice cream machine is the core component of its refrigeration system, responsible for transferring the cold energy of the liquid refrigerant to the ice cream mixture through heat exchange, cooling it and solidifying it into soft ice cream. After the liquid refrigerant (such as R404A, R134a) is depressurized by an expansion valve, it enters the evaporation coil (i.e., the condensing tube) in a low-temperature and low-pressure state. The refrigerant absorbs the heat in the evaporation chamber in the coil, undergoes a phase change (liquid → gas), causing the surface temperature of the coil to drop suddenly. The mixture (milk, sugar, fat, etc.) in the evaporation chamber comes into contact with the low-temperature coil surface, and the heat is conducted through the metal tube wall to the refrigerant. The temperature of the mixture drops below the freezing point, and the water begins to freeze into tiny ice crystals. The fat and air are evenly dispersed. The motor drives the scraper to rotate at high speed, continuously scraping off the frozen layer formed on the inner wall of the evaporation chamber. Air is stirred in during the scraping process, giving the ice cream a soft texture. The mixture is repeatedly cooled and scraped under the push of the scraper, and finally reaches a uniform semi-solid state.
[0003] In the cavity of a soft ice cream machine, uneven refrigeration may occur due to the design or operation problems of the evaporator. This situation will directly affect the texture and taste of the ice cream, and even lead to equipment failures. In areas where the coils are sparse, the cold energy is insufficient, and the mixture cools slowly, resulting in possible local non-solidification or overly thick ice crystals. In areas where the coils are dense, excessive refrigeration occurs, and the mixture freezes too quickly, resulting in too hard ice cream texture. There will also be a problem that the frozen layer forms a heat insulation barrier on the inner wall of the cavity, hindering the transfer of cold energy to the mixture, causing internal temperature stratification, and insufficient stirring leading to uneven air distribution, with the ice cream texture being dense in some areas and loose in some areas. Summary of the Invention
[0004] (1) Technical problems to be solved: Aiming at the deficiencies of the prior art, the present invention provides an evaporator structure of an ice cream machine with uniform refrigeration, which has the advantage of uniform refrigeration in the cavity and solves the problem that uneven refrigeration of the ice cream machine affects the taste.
[0005] (2) Technical solution: To achieve the purpose of uniform cooling of the cavity, the present invention provides the following technical solution: An evaporator structure of an ice cream machine for uniform cooling, including an ice making cylinder, a mounting cylinder, and a rotating cutter. The rotating cutter is arranged inside the ice making cylinder and drives the spiral blades installed on itself through rotation to scrape the condensed ice cream from the inner wall of the ice making cylinder. A condensing pipe is arranged outside the ice making cylinder. The condensing pipe is in a serpentine folding shape and is fixed on the outer wall of the ice making cylinder by welding. The two folding ends of the condensing pipe are respectively the first folding end and the second folding end, and the gap between the folding points in the first folding end is greater than the gap between the second folding ends. The inner wall of the mounting cylinder is circumferentially arrayed with heat conducting ends. When the ice making cylinder is installed in the mounting cylinder, the heat conducting ends are located at the gap between the folding points of the first folding end, and the heat conducting ends are in contact with the outer wall of the ice making cylinder at the gap between the folding points of the first folding end. The mounting cylinder has pores for connecting the condensing pipe with an expansion valve and a compressor, and during installation, the first folding end is oriented inward, and the ice making cylinder can be pushed into the mounting cylinder to complete the installation.
[0006] The condensing pipe is denser in the upper half of the outer wall of the ice making cylinder than in the lower half. The number of condensing pipes arranged in the upper half of the ice making cylinder accounts for 60% of the total number of all condensing pipes.
[0007] Spiral guiding grooves are uniformly arrayed on the inner wall of the ice making cylinder, and the depth of the guiding grooves is less than 3 mm, and the width is greater than 5 mm.
[0008] The slope of the bottom of the guiding groove is between 5° and 10°.
[0009] A Teflon coating is provided on the inner wall of the ice making cylinder and the surface of the guiding grooves.
[0010] Protrusions with the same pitch as the guiding grooves are provided on the spiral blades, and the width and height of the protrusions are less than those of the guiding grooves.
[0011] The mounting cylinder is divided into a heat conducting layer and a heat insulating layer. The heat conducting layer is located inside the heat insulating layer, and the heat insulating layer is made of heat insulating material. The heat conducting ends are arranged on the inner wall of the heat conducting layer.
[0012] On the inner wall of the heat conducting layer, and an installation frame is provided between every two heat conducting ends. The inner width of the installation frame is the same as the width of the first folding end. When the ice making cylinder is installed in the mounting cylinder, the installation frame is in contact with the side of the condensing pipe.
[0013] The pipeline of the condensing pipe at the folding place, that is, the pipeline perpendicular to the extending direction of the ice making cylinder, is in a contracted shape, and the diameter of the pipeline near the upper part is smaller than the diameter of the pipeline near the lower part.
[0014] (III) Beneficial effects: Compared with the prior art, the present invention provides an ice cream machine evaporator structure with uniform refrigeration, having the following beneficial effects: 1. For the ice cream machine evaporator structure with uniform refrigeration, the traditional sandwich-embedded evaporation chamber structure often needs to be formed in one piece during manufacturing, with high requirements for manufacturing processes. In this design, the ice-making cylinder and the installation cylinder can be manufactured separately and then assembled, which greatly reduces the manufacturing difficulty and improves production efficiency. Separated manufacturing also means easier maintenance. When the equipment fails, only the connection between the condensing pipe and the expansion valve and the compressor needs to be disconnected, and the ice-making cylinder can be easily taken out for inspection or replacement without disassembling the entire evaporator, saving maintenance time and cost. The condensing pipe is arranged in a serpentine and folded shape on the outside of the ice-making cylinder and fixed by welding. This design increases the contact area between the condensing pipe and the outer wall of the ice-making cylinder, thereby improving the heat exchange efficiency. The gaps between the heat-conducting end arrays on the inner wall of the installation cylinder are the same as the gaps at the folding points of the first folding end, and the heat-conducting ends are in contact with the outer wall of the ice-making cylinder at these gaps, which fills the refrigeration area gaps between the condensing pipes and ensures the uniformity of the overall temperature of the cavity. Due to the influence of heat convection in the ice-making cylinder, the heat in the upper half is greater than that in the lower half. Therefore, 60% of the condensing pipes are concentrated in the upper half of the outside of the ice-making cylinder. This design effectively reduces the temperature difference and ensures the uniformity of the hardness of the ice cream discharged. The uniform refrigeration effect avoids the situation of local overcooling or overheating of the ice cream, thereby reducing the size difference of ice crystal particles in the ice cream and improving the smoothness of the ice cream taste. By precisely controlling the distribution of the refrigeration area and the condensing pipes, it can be ensured that the ice cream maintains a stable temperature gradient during the condensation process, which helps to form a more delicate and uniform tissue structure and further improves the taste. The folded condensing pipe can adjust the number and position of the folding points according to actual needs to adapt to ice-making cylinders of different sizes and shapes. This design makes the condensing pipe more flexible and adaptable during manufacturing and installation. The split structure makes cleaning and maintenance easier. When cleaning is required, the ice-making cylinder can be easily taken out for cleaning without disassembling the entire evaporator.
[0015] 2. The evaporator structure of this uniformly refrigerated ice cream machine. The design of the diversion channels forces the mixture to move along a spiral path under the action of the rotating cutter. This forced flow pattern breaks the traditional stratified flow, enabling the hot and cold liquids to mix more fully. This not only improves the heat exchange efficiency, ensures the temperature uniformity of the mixture, but also contributes to the texture consistency of the final product. The design of the spiral diversion channels ensures that the mixture can sweep through the area covered by the condensing tube multiple times, effectively avoiding the problem of insufficient local heat transfer caused by flow dead zones. This not only improves the heat exchange efficiency but also ensures the maximization of energy utilization throughout the ice-making or ice cream-making process. Through the "freeze-crush-refreeze" cycle process, the synergistic effect of the spiral diversion channels 12 and the rotating cutter 3 continuously scrapes off the frozen ice crystals and re-entrains them into the unfrozen mixture. This process helps to refine the ice crystal size, making the taste of the final product more delicate and smooth. The design with the depth of the diversion channels less than 3 mm and the width greater than 5 mm, and the slope of the bottom of the channels between 5° - 10°, effectively reduces the dead zone area in the cavity, making it easier for the scraper to scrape off the residues after the raw materials solidify, avoiding the cleaning difficulties and product quality problems caused by residues. The application of the Teflon coating not only improves the wear resistance of the inner wall of the ice-making cylinder 1 and the surface of the diversion channels 12 but also makes these areas smoother and easier to clean, which is of great significance for maintaining the hygiene condition of the equipment and extending its service life.
[0016] 3. The evaporator structure of this uniformly refrigerated ice cream machine. The heat-conducting layer is located inside the thermal insulation layer and is in direct contact with the condensing tube and the ice-making cylinder. This design ensures the efficient transfer of cold energy from the condensing tube to the ice-making cylinder, reducing heat loss. The heat-conducting ends are arranged on the inner wall of the heat-conducting layer, further enhancing the heat conduction path and efficiency, enabling the ice cream to solidify faster. The thermal insulation layer is made of heat-insulating materials, effectively isolating the influence of the external environment on the internal heat exchange process. This not only reduces energy loss but also ensures the stability of the temperature inside the ice-making cylinder, contributing to the uniform solidification and texture of the ice cream. The installation frame not only provides additional support for the condensing tube but also enhances the overall structural stability of the installation cylinder. When installing the ice-making cylinder, the installation frame is in close contact with the side of the condensing tube, ensuring the position stability and safety of the condensing tube during the installation process. The inner width of the installation frame is the same as the width of the first folding end, ensuring the close contact between the condensing tube and the heat-conducting layer. This close contact helps to evenly transfer heat, avoiding the occurrence of local overheating or overcooling phenomena, thereby improving the uniformity and taste of the ice cream.
[0017] 4. The evaporator structure of the ice cream machine with uniform refrigeration. The contraction design of the condenser tube at the turning point helps to increase the flow rate of the refrigerant in the pipeline. According to the principle of fluid mechanics, when the pipe diameter decreases, the flow rate will increase, thus enhancing the heat exchange efficiency between the refrigerant and the pipe wall. This means that more heat can be removed within the same refrigeration time, improving the condensation effect. During the condensation process, the refrigerant flows from the high-pressure area to the low-pressure area. The pipeline diameter above the condenser tube is smaller, which can form a certain resistance and helps to adjust the pressure distribution of the refrigerant in the pipeline. This optimization of the pressure distribution helps to reduce the pressure loss of the refrigerant in the pipeline and improve the overall efficiency of the refrigeration system. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is a schematic structural diagram of the present invention.
[0019] Figure 2 is a front view of the structure of the present invention.
[0020] Figure 3 is an installation schematic diagram of the present invention.
[0021] Figure 4 is a schematic diagram of the ice-making cylinder of the present invention.
[0022] Figure 5 is a detailed sectional view of the present invention.
[0023] Figure 6 is a partial schematic diagram of the spiral blade of the present invention.
[0024] In the figure: 1. Ice-making cylinder; 2. Installation cylinder; 3. Rotary cutter; 11. Condenser tube; 12. Flow guide groove; 21. Heat-conducting end; 22. Heat-conducting layer; 23. Heat-insulating layer; 31. Spiral blade; 111. First turning end; 112. Second turning end; 221. Installation frame; 311. Protrusion. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0026] Please refer to Figures 1 - 4, an ice cream machine evaporator structure with uniform cooling, comprising an ice-making cylinder 1, a mounting cylinder 2 and a rotating cutter 3, wherein the rotating cutter 3 is arranged in the ice-making cylinder 1, and drives a spiral blade 31 installed by itself to scrape the condensed ice cream off the inner wall of the ice-making cylinder 1 by rotating, and a condensing tube 11 is arranged on the outer side of the ice-making cylinder 1, and the condensing tube 11 is in a serpentine shape and is fixed to the outer wall of the ice-making cylinder 1 by welding, and the folding parts on both sides of the condensing tube 11 are respectively a first folding end 111 and a second folding end 112, and the gap between the folding points in the first folding end 111 is larger than the gap between the second folding ends 112, and the circumference of the inner wall of the mounting cylinder 2 is 1. The array has a heat-conducting end 21. When the ice-making cylinder 1 is installed in the installation cylinder 2, the heat-conducting end 21 is located in the gap between the turning points of the first turning end 111, and the heat-conducting end 21 contacts the outer wall of the ice-making cylinder 1 at the gap between the turning points of the first turning end 111. The installation cylinder 2 has a gap for connecting the condenser 11 with the expansion valve and the compressor. When installing, the first turning end 111 is facing inward, and the ice-making cylinder 1 can be pushed into the installation cylinder 2 to complete the installation. The condenser 11 is denser in the upper half of the outer wall of the ice-making cylinder 1 than in the lower half, and the condenser 11 located in the upper half of the ice-making cylinder 1 accounts for 60% of all the condenser 11.
[0027] The condenser pipe 11 is arranged in a folded-back shape outside the ice-making cylinder 1. While being fixed by welding, the heat conduction area is increased. The refrigerant flows from the expansion valve in the machine into the condenser pipe 11, absorbs heat and then flows out of the condenser pipe 11 and returns to the compressor. At the same time, the ice-making cylinder 1 is arranged inside the installation cylinder 2, and a double-layer structure is formed between the ice-making cylinder 1 and the installation cylinder 2. The condenser pipe 11 is embedded in the interlayer between the ice-making cylinder 1 and 2. The two folded-back ends of the condenser pipe 11 are respectively the first folded-back end 111 and the second folded-back end 112. The gap between the first folded-back ends 111 is larger than that of the second folded-back ends 112. During installation, the side of the first folded-back end 111 is oriented towards the inside, so that the heat conduction end head 21 on the inner wall of the installation cylinder 2 is aligned with the gap between the first folded-back ends 111, and then the ice-making cylinder 1 is pushed into the installation cylinder 2 to complete the installation. Compared with the traditional interlayer-embedded evaporation chamber structure, this design can manufacture the ice-making cylinder 1 and the installation cylinder 2 separately and then assemble them during manufacturing, with more convenient operation. And when the equipment is damaged and needs to be repaired, disconnect the connections between the condenser pipe 11, the expansion valve and the compressor, and take out the ice-making cylinder 1 from the installation cylinder 2. The heat conduction end head 21 not only plays a positioning role during the installation process of the ice-making cylinder 1, but also can increase the refrigeration area of the ice-making cylinder 1. The installation cylinder 2 contacts the non-welded side of the condenser pipe 11, and transfers the cold quantity transmitted by the refrigerant to contact the ice-making cylinder 1 through the heat conduction end head 21, filling the refrigeration area gap between the condenser pipes 11, ensuring uniform distribution and the overall temperature of the cavity is consistent, avoiding local overcooling or overheating, and reducing the difference in ice crystal particles generated by ice cream, which affects the taste. Affected by heat convection in the ice-making cylinder 1, the heat in the upper half is greater than that in the lower half. At the same time, the refrigerant in the condenser pipe 11 may turn into a gas after absorbing heat, and the gaseous refrigerant will also flow upward, resulting in the refrigeration effect in the upper half being lower than that in the lower half. Therefore, 60% of the condenser pipes 11 are concentrated in the upper half outside the ice-making cylinder 1 to reduce the temperature difference and avoid uneven hardness of the discharged material.
[0028] Refer to Figure 5, on the inner wall of the ice-making cylinder 1, spiral flow guiding grooves 12 are uniformly arranged in an array. The depth of the flow guiding grooves 12 is less than 3 mm, and the width is greater than 5 mm, reducing the residue in dead corners and avoiding the inability of the scraper to scrape off after the raw material solidifies. The slope of the bottom of the flow guiding groove 12 is between 5° and 10°. A Teflon coating is provided on the inner wall of the ice-making cylinder 1 and the surface of the flow guiding grooves 12. The spiral grooves of the flow guiding grooves 12 form a continuous physical barrier on the inner wall of the cavity. Under the action of the centrifugal force generated by the rotation of the rotating cutter 3, the mixed liquid is forced to move along a spiral path. The flow guiding grooves 12 convert part of the tangential kinetic energy into axial movement, pushing the ice cream raw material to move from the top to the bottom of the cavity. The spiral flow guiding grooves 12 force the ice cream raw material to move downward along the spiral path, destroying the stratified flow and enabling the hot and cold liquids to be fully mixed. The spiral path forces the mixed liquid to sweep across the area covered by the condensing pipe multiple times, avoiding insufficient heat exchange in local areas due to flow dead corners. The scraper continuously scrapes off the frozen layer, and the broken ice crystals and the unfrozen mixed liquid are re-involved in the flow by the spiral groove, forming a "freezing-crushing-re-freezing" cycle, refining the ice crystal size. After multiple spiral cycles, the temperature of the mixed liquid tends to be consistent, and the texture is uniform when it is extruded from the bottom discharge port.
[0029] Refer to Figure 6 , on the spiral blade 31, a protrusion 311 with the same pitch as the flow guiding groove 12 is provided, and the width and height of the protrusion 311 are less than those of the flow guiding groove 12, which is convenient for the rotating cutter 3 to scrape out the ice crystals condensed in the flow guiding groove 12.
[0030] Refer to Figure 5 , the installation cylinder 2 is divided into a heat-conducting layer 22 and a heat-insulating layer 23. The heat-conducting layer 22 is located inside the heat-insulating layer 23, and the heat-insulating layer 23 is made of a heat-insulating material. The heat-conducting end 21 is arranged on the inner wall of the heat-conducting layer 22. On the inner wall of the heat-conducting layer 22, and between every two heat-conducting ends 21, an installation frame 221 is provided. The inner width of the installation frame 221 is the same as the width of the first folding end 111. When the ice-making cylinder 1 is installed in the installation cylinder 2, the installation frame 221 is in contact with the side of the condensing pipe 11.
[0031] The pipeline of the condensing pipe 11 at the folding place, that is, the pipeline perpendicular to the extending direction of the ice-making cylinder 1, is in a contracted shape, and the diameter of the pipeline near the upper part is smaller than that of the pipeline near the lower part.
[0032] Working principle: The condenser tube 11 is arranged in a folded-back shape outside the ice-making cylinder 1. While being fixed by welding, the heat conduction area is increased. The refrigerant flows from the expansion valve in the machine into the condenser tube 11, absorbs heat and then flows out of the condenser tube 11 and returns to the compressor. At the same time, the ice-making cylinder 1 is arranged inside the installation cylinder 2, and a double-layer structure is formed between the ice-making cylinder 1 and the installation cylinder 2. The condenser tube 11 is embedded in the interlayer between the ice-making cylinder 1 and 2. The two folded-back ends of the condenser tube 11 are the first folded-back end 111 and the second folded-back end 112 respectively. The gap between the first folded-back ends 111 is larger than that between the second folded-back ends 112. During installation, the side of the first folded-back end 111 is oriented towards the inside, so that the heat conduction end 21 on the inner wall of the installation cylinder 2 is aligned with the gap between the first folded-back ends 111, and the ice-making cylinder 1 can be pushed into the installation cylinder 2 to complete the installation. Compared with the traditional interlayer-embedded evaporation chamber structure, this design can manufacture the ice-making cylinder 1 and the installation cylinder 2 separately and then assemble them during manufacturing, with more convenient operation. And when the equipment needs to be repaired due to damage, disconnect the connection between the condenser tube 11, the expansion valve and the compressor, and take out the ice-making cylinder 1 from the installation cylinder 2. The heat conduction end 21 not only plays a positioning role during the installation process of the ice-making cylinder 1, but also can increase the refrigeration area of the ice-making cylinder 1. The installation cylinder 2 is in contact with the non-welded side of the condenser tube 11, and the cold quantity transmitted by the refrigerant is then in contact with the ice-making cylinder 1 through the heat conduction end 21, filling the refrigeration area gap between the condenser tubes 11, ensuring uniform distribution of the overall temperature of the cavity, avoiding local overcooling or overheating, and reducing the difference in ice crystal particles generated in the ice cream, which affects the taste.
[0033] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.
[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An evaporator structure for an ice cream machine with uniform cooling, comprising an ice-making cylinder (1), a mounting cylinder (2) and a rotating cutter (3), wherein the rotating cutter (3) is arranged in the ice-making cylinder (1) and drives a spiral blade (31) mounted on the rotating cutter to scrape condensed ice cream off the inner wall of the ice-making cylinder (1) by rotating, characterized in that: A condensing tube (11) is provided on the outside of the ice-making cylinder (1), the condensing tube (11) is in a serpentine shape and is fixed to the outer wall of the ice-making cylinder (1) by welding, the folded parts on both sides of the condensing tube (11) are respectively a first folded end (111) and a second folded end (112), and the gap between the folded points in the first folded end (111) is larger than the gap between the second folded ends (112), and a heat-conducting end (21) is provided in a circumferential array on the inner wall of the mounting cylinder (2), when the ice-making cylinder (1) ) is installed in the installation cylinder (2), the heat conductive end (21) is located in the gap between the turning points of the first turning end (111), and the heat conductive end (21) contacts the outer wall of the ice making cylinder (1) at the gap between the turning points of the first turning end (111), the installation cylinder (2) has a hole for connecting the condensing pipe (11) to the expansion valve and the compressor, and when installing, the first turning end (111) is facing inward, so that the ice making cylinder (1) can be pushed into the installation cylinder (2) to complete the installation.
2. The ice cream machine evaporator structure with uniform cooling according to claim 1, characterized in that: The condensing tubes (11) are denser in the upper half of the outer wall of the ice-making cylinder (1) than in the lower half, and the number of condensing tubes (11) located in the upper half of the ice-making cylinder (1) accounts for 60% of the number of all condensing tubes (11).
3. The ice cream machine evaporator structure with uniform cooling according to claim 1, characterized in that: The inner wall of the ice-making cylinder (1) is evenly arrayed with spiral guide grooves (12), and the guide grooves (12) have a depth of less than 3 mm and a width of more than 5 mm.
4. The ice cream machine evaporator structure with uniform cooling according to claim 3, characterized in that: The bottom slope of the guide groove (12) is between 5° and 10°.
5. The ice cream machine evaporator structure with uniform cooling according to claim 3, characterized in that: The inner wall of the ice-making cylinder (1) and the surface of the guide groove (12) are provided with a Teflon coating.
6. The ice cream machine evaporator structure with uniform cooling according to claim 3, characterized in that: The spiral blade (31) is provided with a protrusion (311) having the same pitch as the guide groove (12), and the width and height of the protrusion (311) are smaller than those of the guide groove (12).
7. The ice cream machine evaporator structure with uniform cooling according to claim 1, characterized in that: The mounting tube (2) is divided into a heat-conducting layer (22) and a heat-insulating layer (23); the heat-conducting layer (22) is located inside the heat-insulating layer (23); the heat-insulating layer (23) is made of a heat-insulating material; and the heat-conducting end head (21) is arranged on the inner wall of the heat-conducting layer (22).
8. The ice cream machine evaporator structure with uniform cooling according to claim 7, characterized in that: A mounting frame (221) is provided on the inner wall of the heat-conducting layer (22) and between each two heat-conducting end heads (21); the inner width of the mounting frame (221) is consistent with the width of the first folded end (111); when the ice-making cylinder (1) is installed in the mounting cylinder (2), the mounting frame (221) contacts the side of the condensing tube (11).
9. An ice cream machine evaporator structure with uniform cooling according to any one of claims 1 to 8, characterized in that: The pipeline of the condensing tube (11) at the turning point, that is, the pipeline perpendicular to the extension direction of the ice-making cylinder (1), is in a contracted shape, and the diameter of the pipeline near the top is smaller than the diameter of the pipeline near the bottom.