Snowflake machine

Abstract

The utility model discloses a snowflake machine, belongs to the field of food processing equipment, solves the problem of cost increase caused by after-sales maintenance due to large negative pressure, and adopts the technical scheme that the snowflake machine mainly comprises a machine body and an ice making assembly arranged in the machine body, the ice making assembly comprises a refrigeration roller and a supporting shaft, the refrigeration roller is rotatably connected to the supporting shaft, and the supporting shaft is rotatably connected to the machine body. A refrigerant cylinder is arranged in the refrigeration roller, the refrigerant cylinder is fixed to a supporting shaft, a refrigerant cavity is formed in the refrigerant cylinder, the supporting shaft is provided with a refrigerant input channel and a refrigerant output channel which are communicated with the refrigerant cavity, a cold guide cavity is formed between the refrigeration roller and the refrigerant cylinder, and the cold guide cavity is used for being filled with a non-toxic and non-flammable liquid medium with the melting point not higher than-10 DEG C. The negative pressure is mainly reduced, and cost increase caused by after-sales maintenance is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of food processing equipment, in particular to a snowflake machine. BACKGROUND

[0002] With the social development and people's life diversification, snacks, cold drinks, snacks and various foods are deeply loved by people, among which young people are particularly favored, for this, the equipment for processing such foods has been born, such as snowflake machine.

[0003] The snowflake machine is gradually known by the public in the market, but at present, it is mainly commercial machine, the prior art CN206459398U discloses a snowflake machine roller, including the roller main body with cavity inside, the roller further includes the closed barrel-shaped rotating shaft and the liquid return pipe inserted in the barrel-shaped rotating shaft, the both ends of the barrel-shaped rotating shaft and the both ends of the liquid return pipe are sealingly connected, and the liquid inlet sealing cavity is formed between the barrel-shaped rotating shaft and the liquid return pipe, the motor connecting shaft is arranged at one end of the roller main body, one end of the barrel-shaped rotating shaft extends into the roller main body and is rotationally connected with the inner end of the motor connecting shaft, the barrel-shaped end cover component is arranged at the other end of the roller main body, the other end of the barrel-shaped rotating shaft is inserted into the barrel-shaped end cover component, and the other end of the barrel-shaped rotating shaft extends to the outer end of the barrel-shaped end cover component, at least one refrigerant nozzle is arranged on the barrel-shaped rotating shaft, the liquid return nozzle is arranged on the closed end of the barrel-shaped rotating shaft and communicated with the liquid return pipe, the barrel-shaped rotating shaft and the barrel-shaped end cover component are rotationally connected, and the mechanical sealing mechanism is arranged between the barrel-shaped rotating shaft and the barrel-shaped end cover component.

[0004] In the prior art, the left end cover and the right end cover are arranged at the both ends of the roller respectively, the left end cover and the right end cover are fixed and sealingly installed on the roller through welding, so that the cavity for containing refrigerant is formed between the roller, the left end cover and the right end cover, and the shaft seal of the barrel-shaped rotating shaft and the left end cover and the right end cover is needed; when ice is made, the refrigerant enters the cavity, and no matter the welding position between the left end cover, the right end cover and the roller or the shaft seal between the left end cover, the right end cover and the barrel-shaped rotating shaft, great pressure is generated, so that the rotating load of the roller is large, the shaft seal of the barrel-shaped rotating shaft is worn greatly, regular maintenance is needed to ensure the sealing effect, which causes the increase of after-sales risk and cost; and when the shaft seal fails, the refrigerant directly leaks into the machine, and there is a use safety risk. UTILITY MODEL CONTENTS

[0005] The utility model wants to reach the purpose is to provide a snowflake machine, solve because the high pressure of refrigerant leads to the welding position between left end cover, right end cover and drum and the shaft seal between left end cover, right end cover and tubular rotating shaft produces greater pressure and wear and tear and needs regular maintenance and appears after - sale risk and cost increase, or refrigerant leakage and exist using safe risk problem, avoid refrigerant to left end cover, right end cover and drum welding position and the shaft seal between left end cover, right end cover and tubular rotating shaft produces greater pressure, and then reduce after - sale risk, avoid using cost increase, avoid refrigerant leakage and appear using safe risk.

[0006] In order to achieve the above object, the utility model adopts the following technical scheme: a snowflake machine, including machine body and the ice making assembly that is located in the machine body, the ice making assembly includes refrigeration drum and support shaft, refrigeration drum is rotatably connected to support shaft, the refrigeration drum is equipped with refrigerant cylinder, refrigerant cylinder is fixed to support shaft, refrigerant cylinder is equipped with refrigerant cavity, support shaft is equipped with refrigerant input channel and refrigerant output channel that communicate with refrigerant cavity respectively, the refrigeration drum and refrigerant cylinder form the cold - conducting cavity, and the cold - conducting cavity is used to fill the liquid medium that is non - toxic, non - flammable and the melting point is not higher than -10 DEG C.

[0007] After adopting the above technical scheme, the utility model has the advantages as follows: when making ice, the refrigerant enters the refrigerant cylinder through the refrigerant input channel, and the refrigerant is contained in the refrigerant cylinder, which avoids the refrigerant from generating greater pressure on the left and right ends of the refrigeration drum, reduces the pressure at the shaft seal between the support shaft and the left and right end covers of the refrigeration drum, reduces the after - sale risk, and avoids the increase of the use cost; after the refrigerant cylinder is added, the liquid medium that is non - toxic, non - flammable and the melting point is not higher than -10 DEG C is filled in the cold - conducting cavity formed between the outer peripheral wall of the refrigerant cylinder and the refrigeration drum, the low temperature formed by the refrigerant is transmitted from the outer side of the refrigerant cylinder to the outer peripheral wall of the refrigeration drum through the liquid medium, and the cold - conducting efficiency between the refrigerant and the refrigeration drum is ensured. And through the filling of the liquid medium, the low temperature of the outer peripheral wall of the refrigerant cylinder can be more uniformly transmitted to the outer peripheral wall of the refrigeration drum, the ice layer formed on the outer peripheral wall of the refrigeration drum is uniformly distributed and has a relatively uniform thickness, the ice quantity is convenient to take and the taking quantity is uniform. The refrigerant cylinder is fixed to the support shaft, and a static sealing relationship is easily formed between them, the sealing reliability is very easy to improve, the refrigerant leakage risk is greatly reduced, the liquid medium is non - toxic, non - flammable and the melting point is not higher than -10 DEG C, and it does not need to be filled into the refrigeration drum under high pressure, so that the liquid medium leakage risk is greatly reduced, and even if the liquid medium leaks, there is no greater use safety problem.

[0008] Further, the inner side of the refrigerant cylinder is provided with a first turbulence rib.

[0009] After the first turbulence rib is arranged, the surface area of the inner peripheral surface of the refrigerant cylinder is increased, the contact area between the refrigerant and the inner side wall of the refrigerant cylinder is increased, and the cold - conducting efficiency of the refrigerant outward is improved.

[0010] Further, the first turbulence rib extends spirally along the axial direction of the refrigerant cylinder.

[0011] The first turbulence rib extends spirally along the axial direction of the refrigerant cylinder, which increases the surface area of the inner wall of the refrigerant cylinder to improve the heat conduction efficiency, guides the refrigerant entering the refrigerant cylinder, and accelerates the dispersion of the refrigerant in the refrigerant cavity, thereby improving the ice making speed. In addition, the spirally extending first turbulence rib reduces the resistance to the refrigerant and improves the speed of uniform contact between the refrigerant and the inner side of the refrigerant cylinder.

[0012] Further, the first turbulence rib is formed by the inward protrusion of the side wall of the refrigerant cylinder, and a turbulence groove is formed on the back of the first turbulence rib on the outer side of the refrigerant cylinder.

[0013] The first turbulence rib is formed by the inward protrusion of the side wall of the refrigerant cylinder, and a turbulence groove is formed on the back of the first turbulence rib on the outer side of the refrigerant cylinder. This increases the surface area of the inner wall of the refrigerant cylinder and the surface area of the outer wall of the refrigerant cylinder, improves the heat conduction efficiency of the refrigerant and the liquid medium, and further improves the ice making efficiency.

[0014] Further, the refrigerant cylinder comprises a first cylinder body and a first cylinder cover, one end of the first cylinder body is sealed and provided with a first shaft hole for fixing the support shaft, the other end of the first cylinder body is open and sealed by the first cylinder cover, and the first cylinder cover is provided with a second shaft hole for fixing the support shaft.

[0015] The refrigerant cylinder is provided in the form of a first cylinder body and a first cylinder cover, which facilitates the stable installation of the support shaft by passing through the first shaft hole and the second shaft hole, improves the assembly efficiency of the refrigerant cylinder and the support shaft, and further reduces the overall cost of the snowflake machine production.

[0016] Further, the support shaft is provided with a radial hole and an axial hole, both ends of the radial hole are in communication with the refrigerant cavity, one end of the axial hole is in communication with the radial hole to form a refrigerant output channel, and the other end of the axial hole is in communication with the refrigerant circulation system.

[0017] The support shaft is provided with a radial hole and an axial hole, which is in communication with the refrigerant circulation system through the axial hole, facilitates the entry of the refrigerant into the refrigerant cylinder through the axial hole, and facilitates the circulation of the refrigerant in the refrigerant cylinder and the refrigerant circulation system after use, thereby ensuring the ice making efficiency of the refrigerant and improving the stability of the ice making on the outer peripheral wall of the refrigeration roller.

[0018] Further, the outer peripheral side of the support shaft is provided with an extension protruding ring at one end of the radial hole, and the refrigerant input pipe comprises a spray pipe located in the refrigerant cavity and a connecting pipe passing through the axial hole and the radial hole, the spray pipe is arranged around the outer periphery of the support shaft, the spray pipe is provided with a spray hole, and the connecting pipe extends out of the other end of the radial hole and is in communication with the spray pipe.

[0019] By the foregoing technical scheme, when the refrigerant is delivered into the refrigerant cylinder, the connecting pipe is connected with the refrigerant circulation system, the connecting pipe extends from one end of the radial hole to be connected with the spray pipe, the refrigerant is conveniently delivered into the spray pipe, the refrigerant enters the refrigerant cavity through the spray hole and contacts the inner side of the refrigerant cylinder, the spray of the spray hole improves the uniformity of the distribution of the refrigerant in the refrigerant cylinder and the uniformity of the temperature of the outer side of the refrigerant cylinder, the used refrigerant re-enters the axial hole from the guide convex ring and the radial hole and flows to the refrigerant circulation system, the refrigerant is conveniently circulated between the refrigerant circulation system and the refrigerant cavity, and the ice making efficiency is ensured.

[0020] Further, the outer periphery of the supporting shaft is provided with a pipe support for supporting and fixing the spray pipe.

[0021] By the foregoing technical scheme, the spray pipe is supported and installed on the outer peripheral wall of the supporting shaft through the pipe support, the stability of the spray pipe is improved, and the spray pipe is prevented from being separated from the support frame during ice making.

[0022] Further, the inner side of the refrigeration cylinder is provided with a second turbulence rib.

[0023] By the foregoing technical scheme, the second turbulence rib is arranged on the inner side of the refrigeration cylinder, the surface area of the inner side of the refrigeration cylinder is increased, and the heat conduction efficiency between the inner side and the outer side of the refrigeration cylinder is improved.

[0024] Further, the radial distance from the inner side of the refrigeration cylinder to the outer side of the refrigerant cylinder is L1, and L1≤15 mm.

[0025] By the foregoing technical scheme, the radial distance from the inner side of the refrigeration cylinder to the outer side of the refrigerant cylinder is set to be not more than 15 mm, the liquid medium is prevented from being too thick between the outer peripheral wall of the refrigerant cylinder and the inner side wall of the refrigeration cylinder to increase the thermal resistance, the heat transfer speed is prevented from being slow to affect the ice making efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0026] The utility model will be further described below in combination with the drawings:

[0027] Figure 1 It is a schematic view of the snowflake machine of the utility model;

[0028] Figure 2 It is a structural schematic view of the first turbulence rib in the utility model;

[0029] Figure 3 It is an explosion schematic view of the supporting shaft and the refrigerant cylinder in the utility model;

[0030] Figure 4 It is the utility model Figure 2 A magnified view of the place A in the utility model;

[0031] Figure 5A schematic view for showing the radial distance of the refrigeration roller and the refrigerant cylinder. DETAILED DESCRIPTION

[0032] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0033] The terms "first", "second" and the like (if any) in the description and claims of the present application are used to distinguish similar objects, rather than to describe a particular order or sequence, even if "second" is used to distinguish before a certain technical feature. It should be understood that in the present application, "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. It should be understood that in the present application, "multiple" means two or more. "And / or" is only a description of the relationship between the associated objects, which means that there can be three relationships, for example, X and / or Y can represent three cases: X alone, X and Y together, and Y alone. The character " / " generally represents an "or" relationship between the associated objects. "Including X, Y and Z", "including X, Y, Z" means that X, Y and Z are all included, "including X, Y or Z" means that one of X, Y and Z is included, and "including X, Y and / or Z" means that any one or any two or all of X, Y and Z is included.

[0034] The technical solutions of the present application will be described in detail below with specific embodiments. The following specific embodiments can be combined or replaced according to actual conditions, and the same or similar concepts or processes may not be described in some embodiments.

[0035] As Figure 1As shown, the utility model provides a snowflake machine, including machine body and be located in the ice making component 1 of machine body, ice making component 1 includes refrigeration cylinder 11 and support shaft 12, refrigeration cylinder 11 is rotatably connected to support shaft 12, refrigeration cylinder 11 is equipped with refrigerant cylinder 13, refrigerant cylinder 13 is fixed to support shaft 12, refrigerant cylinder 13 is equipped with refrigerant cavity 131, support shaft 12 is equipped with refrigerant input channel 125 and refrigerant output channel 121 respectively with refrigerant cavity 131 intercommunication, refrigeration cylinder 11 and refrigerant cylinder 13 form the cold lead chamber 132 between, cold lead chamber 132 is used to fill the liquid medium of non-toxic non-flammable and melting point not higher than -10 DEG C, when ice making, refrigerant enters refrigerant cylinder 13 in refrigerant input channel 125 and remains in refrigerant cavity 131, so that the temperature of the outer peripheral wall of refrigerant cylinder 13 drops rapidly, the low temperature of the outer peripheral wall of refrigerant cylinder 13 is transmitted to the outer peripheral wall of refrigeration cylinder 11 relatively quickly through the liquid medium in cold lead chamber 132, so that the material liquid freezes into ice layer on the outer peripheral wall of refrigeration cylinder 11. Refrigerant cylinder 13 is arranged in refrigeration cylinder 11, refrigerant is contained in the refrigerant cavity 131 of refrigerant cylinder 13, the high pressure of refrigerant is reduced to form negative pressure at the connection of refrigeration cylinder 11 and left and right two ends, and the safety hazard between refrigeration cylinder 11 and left and right ends is further reduced. In addition, the refrigerant is in the refrigerant cylinder 13, the negative pressure is avoided to be formed at the shaft seal between the support shaft 12 and the refrigeration cylinder 11 by the refrigerant, and the safety of the refrigeration cylinder 11 is affected. Refrigerant cylinder 13 is fixed to support shaft 12, a static sealing relationship is easily formed between each other, the sealing reliability is very easy to improve, the leakage risk of refrigerant is greatly reduced, the liquid medium is non-toxic non-flammable and the melting point is not higher than -10 DEG C, and the liquid medium does not need to be filled into the refrigeration cylinder 11 under high pressure. Not only the leakage risk of the liquid medium is greatly reduced, but also there is no big use safety problem even if the liquid medium leaks.

[0036] In order to improve the refrigeration efficiency of the inner wall of the refrigerant cylinder 13, as shown, Figure 2 The inner side of the refrigerant cylinder 13 is provided with a first turbulence rib 133, which is inwardly convex. By increasing the surface area of the inner side of the refrigerant cylinder 13 through the first turbulence rib 133, the contact area between the refrigerant and the inner side of the refrigerant cylinder 13 is increased, thereby improving the refrigeration efficiency of the inner and outer sides of the refrigerant cylinder 13 and avoiding slow refrigeration that affects ice making efficiency.

[0037] In this embodiment, as shown, Figure 2As shown, the first turbulence rib 133 extends helically along the axial direction of the refrigerant cylinder 13, and plays a guiding role for the refrigerant entering the refrigerant cavity 131, so that the refrigerant entering the refrigerant cylinder 13 gradually fills the refrigerant cylinder 13 along the first turbulence rib 133 as the amount increases, so that the refrigerant can be in contact with the inner side of the refrigerant cylinder 13 as much as possible, further improving the heat conduction efficiency of the refrigerant cylinder 13. In addition, the first turbulence rib 133 is arranged in a helical extension manner, which avoids blocking the dispersion of the refrigerant in the axial direction of the refrigerant cylinder 13, and the refrigerant can better contact the inner side of the refrigerant cylinder 13.

[0038] In order to better improve the heat conduction efficiency of the inner side and the outer side of the refrigerant cylinder 13, as shown in the drawings, Figure 2 As shown, the first turbulence rib 133 is formed by protruding inward from the side wall of the refrigerant cylinder 13, and the outer side of the refrigerant cylinder 13 forms a turbulence groove 134 on the back of the first turbulence rib 133, which is recessed inward. The first turbulence rib 133 increases the surface area of the inner side of the refrigerant cylinder 13, and the turbulence groove 134 increases the surface area of the outer side of the refrigerant cylinder 13, further improving the heat conduction efficiency of the refrigerant cylinder 13. In this embodiment, the first turbulence rib 133 and the turbulence rib can also extend helically along the axial direction of the refrigerant cylinder 13.

[0039] In another embodiment, as shown in the drawings, Figure 2 and Figure 3 As shown, the refrigerant cylinder 13 comprises a first cylinder body 135 and a first cylinder cover 136, one end of the first cylinder body 135 is sealed and provided with a first shaft hole 1351 for fixing with the support shaft 12, the other end of the first cylinder body 135 is open and sealed by the first cylinder cover 136, and the first cylinder cover 136 is provided with a second shaft hole 1361 for fixing with the support shaft 12. The refrigerant cylinder 13 is arranged in the form of the first cylinder body 135 and the first cylinder cover 136, the support shaft 12 passes through the first shaft hole 1351, and the first cylinder cover 136 is sleeved on the support shaft 12 so that the support shaft 12 passes through the second shaft hole 1361, thereby connecting the support shaft 12 and the refrigerant cylinder 13 together. It is convenient to fix the support shaft 12 and the refrigerant cylinder 13 by passing through the first shaft hole 1351 and the second shaft hole 1361 in turn, which speeds up the assembly of the refrigerant cylinder 13 and the support shaft 12, and reduces the overall production cost.

[0040] In order to facilitate the circulation of the refrigerant between the refrigerant cylinder 13 and the refrigerant circulation system, as shown in the drawings, Figure 2 As shown, the support shaft 12 is provided with a radial hole 123 and an axial hole 122, both ends of the radial hole 123 are in communication with the refrigerant cavity 131, one end of the axial hole 122 is in communication with the radial hole 123 to form a refrigerant output channel 121, and the other end of the axial hole 122 is in communication with the refrigerant circulation system. The refrigerant in the refrigerant cavity 131 enters the axial hole 122 from the radial hole 123 and returns to the refrigerant circulation system along the axial hole 122.

[0041] To avoid the refrigerant entering the refrigerant cavity 131 from mixing with the discharged refrigerant, as shown in Figure 2 and Figure 3 , the outer peripheral side of the support shaft 12 is provided with an extended protruding ring 124 at one end of the radial hole 123, and the support shaft 12 is provided with a refrigerant inlet pipe 14, which includes a spray pipe 141 located in the refrigerant cavity 131 and a connecting pipe 142 passing through the axial hole 122 and the radial hole 123, the spray pipe 141 is arranged around the outer periphery of the support shaft 12, and the connecting pipe 142 extends from the other end of the radial hole 123 and communicates with the spray pipe 141, and the cavity of the connecting pipe 142 and the spray pipe 141 forms a refrigerant inlet channel 125, as shown in Figure 4 , the spray pipe 141 is provided with a spray hole 1411, the spray hole 1411 and the refrigerant cavity 131 communicate the refrigerant inlet channel 125 and the refrigerant outlet channel 121, and the refrigerant entering the refrigerant inlet channel 125 is sprayed from the spray hole 1411 into the refrigerant cavity 131, so that the refrigerant can be more uniformly distributed in the refrigerant cavity 131, and the entry and discharge of the refrigerant are two independent channels that do not affect each other, avoiding the mixing of the discharged refrigerant and the entering refrigerant to affect the refrigeration effect of the refrigerant.

[0042] In order to stably install the spray pipe 141, as shown in Figure 2 and Figure 3 , the outer periphery of the support shaft 12 is provided with a pipe support 2 for supporting and fixing the spray pipe 141; specifically, the pipe support 2 includes a first support 21 and a second support 22, the first support 21 is arranged at one end of the support shaft 12 close to the first cylinder cover 136, and the first support 21 is fixed on the support shaft 12 by screws, and the second support 22 is arranged at one end of the support shaft 12 close to the first shaft hole 1351, as shown in Figure 4 , the edge of the second support 22 is bent to form a bent portion 221 towards the first support 21, the spray pipe 141 is arranged on the first support 21 and the second support 22, and the bent portion 221 avoids the spray pipe 141 from being separated from the support shaft 12 when the support shaft 12 rotates, thereby improving the stability of the installed spray pipe 141. The spray holes 1411 are distributed on the spray pipe 141 along the axial direction of the support shaft 12, which facilitates the refrigerant to enter the refrigerant cavity 131 more uniformly.

[0043] In order to further improve the refrigeration efficiency of the refrigeration roller 11, the inner side of the refrigeration roller 11 is provided with a second turbulence rib, which increases the surface area of the inner side of the refrigeration roller 11, thereby improving the refrigeration efficiency of the refrigeration roller 11.

[0044] In order to ensure the refrigeration effect of the refrigeration roller 11, as shown in Figure 5As shown, the radial distance between the inner side of the refrigeration roller 11 and the outer side of the refrigerant cylinder 13 is L1, and L1≤15mm, so as to avoid the liquid medium filled in the heat conduction cavity 132 being too thick to increase the thermal resistance, thereby causing slow heat transfer speed and slow ice making speed. The volume of the liquid medium will change at different temperatures, therefore, when filling the liquid medium in the heat conduction cavity 132, it cannot be filled too full to avoid the extrusion on the inner side and the end face of the refrigeration roller 11 when the volume changes.

[0045] In addition to the preferred embodiments described above, the utility model also has other implementation manners, and all other embodiments obtained by the person skilled in the art based on the embodiments in the utility model without creative labor belong to the range of the utility model claimed.

Claims

1. A snowflake machine comprising a machine body and an ice making assembly disposed within the machine body, characterized in that, The ice-making assembly comprises an ice-making roller and a supporting shaft, the ice-making roller is rotationally connected to the supporting shaft, a refrigerant cylinder is arranged in the ice-making roller, the refrigerant cylinder is fixed to the supporting shaft, a refrigerant cavity is arranged in the refrigerant cylinder, the supporting shaft is provided with a refrigerant input channel and a refrigerant output channel which respectively communicate with the refrigerant cavity, a cold-conducting cavity is formed between the ice-making roller and the refrigerant cylinder, and the cold-conducting cavity is filled with a liquid medium which is non-toxic, non-flammable and has a melting point not higher than -10 DEG C.

2. The snowmaker of claim 1, wherein The inner side of the refrigerant cylinder is provided with a first turbulence rib.

3. The snowmaker of claim 2, wherein, The first turbulence rib extends helically along the axial direction of the refrigerant cylinder.

4. A snowmaker as claimed in claim 2 or 3, characterised in that, The first turbulence rib is formed by inward protrusion of the side wall of the refrigerant cylinder, and a turbulence groove is formed on the back of the first turbulence rib on the outer side of the refrigerant cylinder.

5. The snowmaker of claim 1, wherein, The refrigerant cylinder comprises a first cylinder body and a first cylinder cover, one end of the first cylinder body is sealed and provided with a first shaft hole for cooperation and fixation with the supporting shaft, the other end of the first cylinder body is open and sealed by the first cylinder cover, and the first cylinder cover is provided with a second shaft hole for cooperation and fixation with the supporting shaft.

6. The snowmaker of claim 1, wherein, The supporting shaft is provided with a radial hole and an axial hole, both ends of the radial hole communicate with the refrigerant cavity, one end of the axial hole communicates with the radial hole to form the refrigerant output channel, and the other end of the axial hole communicates with the refrigerant circulation system.

7. The snowmaker of claim 6, wherein, The outer peripheral side of the supporting shaft is provided with an extended protruding ring at one end of the radial hole, the refrigerant input pipe comprises a spray pipe arranged in the refrigerant cavity and a connecting pipe arranged along the axial hole and the radial hole, the spray pipe is arranged around the outer periphery of the supporting shaft, the spray pipe is provided with a spray hole, and the connecting pipe extends out of the other end of the radial hole and communicates with the spray pipe.

8. The snowmaker of claim 7, wherein, The outer periphery of the supporting shaft is provided with a pipe support for supporting and fixing the spray pipe.

9. The snowmaker of claim 1, wherein, The inner side of the ice-making roller is provided with a second turbulence rib.

10. The snowmaker of claim 1, wherein, The radial distance from the inner side of the ice-making roller to the outer side of the refrigerant cylinder is L1, and L1 is less than or equal to 15 mm.

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