Evaporator and ice cream machine

Abstract

The application discloses an evaporator and an ice cream machine, and relates to the technical field of ice cream machines, wherein the evaporator comprises: an inner barrel used for containing a medium to be frozen; and an outer barrel arranged outside the inner barrel; wherein the two ends of the outer barrel are sealingly connected with the two ends of the inner barrel, so as to form a heat exchange cavity for refrigerant passing between the inner barrel and the outer barrel; the bottom of the outer barrel is provided with a refrigerant inlet, and the end of the outer barrel away from the bottom is provided with a refrigerant outlet, so that the refrigerant entering the heat exchange cavity is discharged after sequentially passing through the bottom of the inner barrel and the side of the inner barrel. The technical scheme provided by the application improves the refrigeration effect of the ice cream machine and helps to reduce energy consumption.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ice cream machine, in particular to an evaporator and ice cream machine. BACKGROUND

[0002] The existing ice cream machine usually adopts copper pipe coil structure to refrigerate the bowl containing ice cream raw materials. This structure has several obvious defects: first, the copper pipe coil needs to be closely attached to the outside of the bowl body, but it is difficult to ensure consistent attachment during actual assembly, resulting in unstable heat exchange efficiency; second, the copper pipe material cost is relatively high, and the coil processing technology is complex, increasing the manufacturing cost; third, due to the contact thermal resistance between the coil and the bowl body, the refrigeration efficiency is low, which affects the freezing effect of ice cream. SUMMARY

[0003] The main purpose of the present application is to provide an evaporator and ice cream machine, which aims to solve the above technical problems.

[0004] To achieve the above purpose, the present application provides an evaporator for an ice cream machine, comprising:

[0005] an inner barrel for containing the medium to be frozen;

[0006] an outer barrel arranged outside the inner barrel;

[0007] wherein the two ends of the outer barrel are sealingly connected to the two ends of the inner barrel to form a heat exchange cavity for the refrigerant to pass between the inner barrel and the outer barrel; the bottom of the outer barrel is provided with a refrigerant inlet, and the end of the outer barrel away from the bottom is provided with a refrigerant outlet, so that the refrigerant entering the heat exchange cavity is discharged after passing through the bottom of the inner barrel and the side of the inner barrel in turn.

[0008] In an embodiment, the refrigerant inlet is inclined or parallel to the bottom of the inner barrel.

[0009] In an embodiment, a flow guide part is arranged in the heat exchange cavity, the flow guide part is opposite to the refrigerant inlet, and the flow guide part is used to block and guide the refrigerant along the extension direction of the flow guide part, so that the refrigerant is diffused at the bottom of the outer barrel.

[0010] In an embodiment, the flow guide part is configured as a protrusion at the bottom of the outer barrel, the protrusion is in abutment or gap fit with the bottom of the inner barrel, the protrusion extends around the center of the bottom of the outer barrel to separate the heat exchange cavity into a first chamber and a second chamber, and a notch is arranged on the protrusion, the notch communicates the first chamber and the second chamber.

[0011] In an embodiment, the notch and the refrigerant inlet are arranged in a circumferential direction of the outer barrel; and / or,

[0012] The gap is arranged in a circumferential direction of the outer barrel and is staggered with the refrigerant outlet.

[0013] In an embodiment, an inner wall of the heat exchange cavity between the flow guide and the refrigerant inlet is provided with a recess, and the recess is arranged protruding towards the outside of the heat exchange cavity.

[0014] In an embodiment, the evaporator is further provided with a mounting port penetrating through the barrel bottom of the inner barrel and the bottom of the outer barrel, and the mounting port is used for the stirring shaft to penetrate into the inner barrel.

[0015] In an embodiment, the bottom of the outer barrel is provided with a connecting portion protruding towards the inner barrel, the connecting portion is arranged around the mounting port and is arranged in a spaced manner with the mounting port, and the connecting portion is in sealing connection with the bottom of the inner barrel.

[0016] In an embodiment, the bottom of the outer barrel is provided with a limiting portion extending along the circumference of the mounting port, and the limiting portion is used to cooperate with the stirring shaft to limit the stirring shaft; and / or,

[0017] The bottom of the outer barrel is provided with a heat insulation port, and the heat insulation port is arranged between the connecting portion and the mounting port, and the heat insulation port is arranged in a spaced manner around the mounting port.

[0018] The application further provides an ice cream machine comprising the above-mentioned evaporator.

[0019] In the technical scheme of the application, the heat exchange cavity is formed by sealing the inner barrel and the outer barrel, so that the refrigerant can directly contact the inner barrel for heat exchange, thereby improving the refrigeration efficiency and effect and reducing the energy consumption. In addition, by optimizing the refrigerant flow path, the refrigerant cools the inner barrel from bottom to top, so that the refrigeration effect of the bottom of the inner barrel is better. When a user uses a small amount of ice cream liquid, the bottom refrigeration is mainly needed, so that the full use of cold energy is ensured, and the actual use requirement is met. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings shown.

[0021] Figure 1 The structure schematic diagram of the ice cream machine provided by the application is shown in the figure.

[0022] Figure 2A cross-sectional view of the evaporator provided by the present application is shown in the figure;

[0023] Figure 3 For Figure 2 A cross-sectional view of the barrel bottom of the outer barrel in the embodiment is shown in the figure;

[0024] Figure 4 For Figure 2 A structure view of the outer barrel in the embodiment is shown in the figure.

[0025] Brief Description of the Drawings:

[0026] 10, heat exchange cavity; 11, first chamber; 12, second chamber; 20, refrigerant inlet; 30, refrigerant outlet; 40, mounting port; 50, stirring shaft; 60, shell; 100, inner barrel; 200, outer barrel; 210, flow guide part; 220, notch; 230, recessed part; 240, connecting part; 250, limiting part; 260, heat insulation port; 300, inlet pipe; 400, outlet pipe; 500, heat preservation barrel.

[0027] The realization of the object, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying 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. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0029] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0030] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0031] The existing ice cream machine refrigeration is mainly used for copper tube coil to contact heat exchange with ice cream bowl structure, which has the defects of difficult to guarantee the contact degree, unstable heat exchange efficiency, high cost and complex processing of copper tube, and the influence of coil thermal resistance on refrigeration effect.

[0032] Therefore, the present application provides an evaporator for an ice cream machine, which comprises:

[0033] The inner barrel 100 is used to hold the medium to be frozen;

[0034] The outer barrel 200 is arranged outside the inner barrel 100;

[0035] Wherein, the two ends of the outer barrel 200 are respectively sealed connected with the two ends of the inner barrel 100, so as to form a heat exchange cavity 10 for the refrigerant to pass between the inner barrel 100 and the outer barrel 200; the barrel bottom of the outer barrel 200 is provided with a refrigerant inlet 20, and the end of the outer barrel 200 away from the barrel bottom is provided with a refrigerant outlet 30, so that the refrigerant entering the heat exchange cavity 10 is discharged after passing through the bottom of the inner barrel 100 and the side of the inner barrel 100 in turn.

[0036] In the technical scheme of the present application, the heat exchange cavity 10 is formed by sealing the inner barrel 100 and the outer barrel 200, so that the refrigerant can directly contact and exchange heat with the inner barrel 100, which improves the refrigeration efficiency and refrigeration effect, and also helps to reduce the energy consumption; in addition, by optimizing the refrigerant flow path, the refrigerant cools the inner barrel 100 from bottom to top, so that the refrigeration effect of the bottom of the inner barrel 100 is better, and when the user uses a small amount of ice cream liquid, the bottom refrigeration is mainly needed, so as to ensure the full use of cold energy and meet the actual use demand.

[0037] As Figures 1 to 4As shown, in an embodiment of the present application, the evaporator is applied to process ice cream liquid in an ice cream machine, and the evaporator comprises a cylindrical inner barrel 100 and an outer barrel 200 sleeved outside the inner barrel 100; the inner barrel 100 is made of stainless steel material and is used for containing ice cream raw materials, and the top of the inner barrel 100 is open to take out the ice cream; in addition, the inner barrel 100 can be provided with rotatable blades for stirring; the outer barrel 200 can be made of aluminum alloy or stainless steel and the like, and the top of the outer barrel 200 is open and sleeved outside the inner barrel 100; the top of the inner barrel 100 is provided with a turn-up, and the edge of the top opening of the outer barrel 200 is matched with the turn-up and is connected in a sealed manner by welding, bonding or the like, so that the opening of the outer barrel 200 is closed; similarly, the outer barrel 200 has a barrel bottom opposite to the opening, and the inner barrel 100 has a bottom corresponding to the barrel bottom, and the barrel bottom of the outer barrel 200 is connected with the bottom of the inner barrel 100 in the same connection manner and is matched in a sealed manner, so that a closed heat exchange cavity 10 is formed between the inner barrel 100 and the outer barrel 200, and the heat exchange cavity 10 surrounds the bottom and the side of the inner barrel 100.

[0038] In addition, the outer barrel 200 is further provided with a refrigerant inlet 20 and a refrigerant outlet 30, and the refrigerant inlet 20 and the refrigerant outlet 30 are communicated with the heat exchange cavity 10; the refrigerant inlet 20 can be connected with the refrigerant output from the compressor of the ice cream machine, and the refrigerant outlet 30 is used for returning the refrigerant to the compressor to complete the circulation; after the structure is adopted, the refrigerant entering the heat exchange cavity 10 can directly exchange heat with the outer wall of the inner barrel 100, so as to directly refrigerate the medium to be frozen in the inner barrel 100; thus, the thermal resistance between the refrigerant and the medium to be frozen can be reduced, the refrigeration efficiency and the refrigeration effect are improved, the processing quality and the processing efficiency of the ice cream are improved, and the energy consumption required for refrigeration is reduced, and the economy of the ice cream machine is improved.

[0039] As Figure 2As shown, in another embodiment of the present application, the refrigerant inlet 20 is arranged at the bottom of the outer barrel 200, and the refrigerant outlet 30 is arranged at a position close to the opening of the inner barrel 100 on the outer barrel 200, so that the refrigerant first passes through the bottom of the inner barrel 100 after entering the heat exchange cavity 10 from the bottom, and then flows upward along the sidewall of the inner barrel 100, and finally is discharged from the top; in use, the ice cream raw material is poured into the inner barrel 100, and the refrigeration system is started, and the liquid or gaseous refrigerant enters the heat exchange cavity 10 from the refrigerant inlet 20, the refrigerant first diffuses at the bottom of the inner barrel 100, and exchanges heat with the bottom, and then the refrigerant flows upward along the sidewall of the inner barrel 100, continuously exchanges heat with the sidewall, and finally is discharged from the refrigerant outlet 30 at the top, to complete a cycle; such an arrangement ensures that the refrigerant first contacts the bottom of the inner barrel 100, and then contacts the sidewall, so as to achieve overall heat exchange while covering the outer wall of the inner barrel 100, and enhance the heat exchange effect of the bottom of the inner barrel 100; when a small amount of ice cream raw material is processed, such an arrangement can ensure that the cold energy is fully utilized by the ice cream raw material, avoid energy waste caused by excessive refrigeration, and better meet the actual use requirements.

[0040] As Figure 2 and Figure 3 In another embodiment of the present application, the refrigerant inlet 20 is arranged obliquely or parallel to the bottom of the inner barrel 100. In this scheme, the refrigerant inlet 20 can form a certain angle with the bottom of the inner barrel 100, for example, it can be a 45-degree angle, etc. The oblique arrangement makes the refrigerant enter the heat exchange cavity 10 at a certain angle, rather than directly impacting the bottom of the inner barrel 100, so as to avoid causing local overcooling and affecting the quality of the ice cream. In addition, when the refrigerant inlet 20 is arranged obliquely, the refrigerant enters the heat exchange cavity 10 along the tangent direction, which can better diffuse in the transverse direction at the bottom of the outer barrel 200, so as to ensure more uniform refrigeration of the inner barrel 100, and the heat exchange efficiency can also be improved.

[0041] As Figures 2 to 4 In another embodiment of the present application, a flow guide part 210 is arranged in the heat exchange cavity 10, the flow guide part 210 is opposite to the refrigerant inlet 20, and the flow guide part 210 is used to block and guide the refrigerant along the extension direction of the flow guide part 210, so as to diffuse the refrigerant at the bottom of the outer barrel 200.

[0042] The flow guide 210 can be configured as an arc-shaped flow guide plate extending circumferentially along the inner barrel 100 or a conical flow diversion structure facing the refrigerant inlet 20. When the refrigerant enters the heat exchange chamber 10 from the refrigerant inlet 20, it is first blocked by the flow guide 210, which slows down the initial velocity of the refrigerant. Then, the flow guide 210 can divert or guide the refrigerant to flow along a specific path, so that the refrigerant diffuses at the bottom of the inner barrel 100 and fully exchanges heat with the bottom of the inner barrel 100. After that, the refrigerant spreads upward from the bottom of the inner barrel 100 and covers the side of the inner barrel 100, achieving all-round heat exchange. By setting the flow guide 210, the problem of uneven distribution at the bottom of the inner barrel 100 caused by excessive flow velocity or concentrated direction when the refrigerant directly enters the heat exchange chamber 10 is solved. This allows the refrigerant to cover the bottom area of ​​the heat exchange chamber 10 more extensively, increases the contact area with the inner barrel 100, improves the uniformity of the refrigerant's cooling of the bottom of the inner barrel 100, and enhances the heat exchange efficiency between the refrigerant and the medium to be frozen.

[0043] like Figure 3 and Figure 4 One form of the flow guide 210 is shown. In this embodiment, the flow guide 210 is configured as a protrusion on the bottom of the outer barrel 200. The protrusion abuts or gap-fits with the bottom of the inner barrel 100. The protrusion extends around the center of the bottom of the outer barrel 200 to divide the heat exchange chamber 10 into a first chamber 11 and a second chamber 12. A notch 220 is provided on the protrusion, and the notch 220 connects the first chamber 11 and the second chamber 12.

[0044] The protrusion can be formed by the bottom of the outer tub 200 recessing towards the bottom of the inner tub 100, or it can be a separate part welded or bonded to the bottom of the outer tub 200. The protrusion can abut against the bottom of the inner tub 100 or maintain a certain gap with the bottom of the inner tub 100. In addition, the protrusion can adopt a ring structure, and the protrusion can extend in a ring around the center of the bottom of the inner tub 100. The protrusion divides the receiving cavity into a first chamber 11 on the side where the refrigerant inlet 20 is located and a second chamber 12 on the side where the refrigerant outlet 30 is located. A clearance structure is provided on the protrusion to connect the first chamber 11 and the second chamber 12. The clearance structure can be a notch 220 or the like provided on the protrusion.

[0045] When the refrigerant enters the first chamber 11 from the refrigerant inlet 20, the refrigerant is blocked by the protrusion and guided along the extension direction of the protrusion to the periphery of the bottom of the inner barrel 100. The refrigerant flows along the extension direction of the protrusion and diffuses in the first chamber 11 during the flow process, and the portion of the bottom of the inner barrel 100 located in the first chamber 11 exchanges heat with the refrigerant sufficiently; when the refrigerant flows to the gap 220, the refrigerant can enter the second chamber 12 through the gap 220 and continue to diffuse at the portion of the bottom of the inner barrel 100 located in the second chamber 12, and then flow upward to the side of the inner barrel 100, and flow upward along the side wall of the inner barrel 100 after sufficient diffusion at the bottom of the barrel, and then be discharged from the refrigerant outlet 30. The above scheme realizes uniform distribution of the refrigerant in the bottom region of the inner barrel 100, and also improves the overall heat exchange efficiency and the freezing effect.

[0046] As Figure 4 In another embodiment of the present application, the gap 220 and the refrigerant inlet 20 are arranged in a staggered manner in the circumferential direction of the outer barrel 200.

[0047] The staggered arrangement means that the gap 220 is not directly opposite the refrigerant inlet 20, and the refrigerant entering from the refrigerant inlet 20 needs to be blocked by the protrusion first and flow along the extension direction of the protrusion, and then diffuse to the second chamber 12 when the refrigerant flows to the position of the gap 220. In this way, the flow path and residence time of the refrigerant in the first chamber 11 can be prolonged, and the heat exchange between the refrigerant and the bottom of the inner barrel 100 is ensured, thereby ensuring the freezing effect of the freezing medium in contact with the bottom of the inner barrel 100.

[0048] Similarly, in another embodiment of the present application, the gap 220 and the refrigerant outlet 30 are arranged in a staggered manner in the circumferential direction of the outer barrel 200. In this way, the flow path and time of the refrigerant from the gap 220 to the refrigerant inlet 20 can be increased, so that the refrigerant can diffuse in the second chamber 12 during the process from the gap 220 to the refrigerant inlet 20, thereby ensuring the refrigeration effect on the side of the inner barrel 100 and ensuring the quality of ice cream processing.

[0049] As Figure 3 And Figure 4 In another embodiment of the present application, the inner wall of the heat exchange chamber 10 between the flow guide portion 210 and the refrigerant inlet 20 is provided with a recessed portion 230, and the recessed portion 230 is arranged protruding towards the outside of the heat exchange chamber 10.

[0050] The recess 230 is formed on the inner wall of the heat exchange cavity 10 between the flow guide 210 and the refrigerant inlet 20, which is located at the position where the refrigerant impact converges in the heat exchange cavity 10, the recess 230 protrudes outwardly from the outer barrel 200, and the surface can be configured as an arc curved surface or a continuous polyline. After the refrigerant enters the heat exchange cavity 10 from the refrigerant inlet 20, it first impacts the area where the recess 230 is located. The structure of the outward protruding recess 230 causes the flow passage cross section to partially expand, the refrigerant flow rate and pressure can be reduced, and the refrigerant pressure concentration phenomenon is alleviated, so that the refrigerant can smoothly transition to the flow guide 210 area. This design effectively avoids the generation of vortex, ensures the uniform dispersion of the refrigerant at the bottom of the inner barrel 100, thereby improving the heat exchange efficiency and improving the overall performance of the evaporator.

[0051] In another embodiment of the present application, the edge of the recess 230 is provided with a chamfer or a round corner, so that the refrigerant can flow smoothly when passing through the recess 230, reducing vortex and turbulence, and further ensuring the effect of the refrigerant diffusing at the bottom of the inner barrel 100.

[0052] As Figures 2 to 4 In another embodiment of the present application, the evaporator further comprises a mounting port 40, the mounting port 40 penetrates the barrel bottom of the inner barrel 100 and the bottom of the outer barrel 200, and the mounting port 40 is used for the stirring shaft 50 to penetrate into the inner barrel 100.

[0053] The mounting port 40 can be configured as a through hole structure coaxially penetrating the center of the bottom of the inner barrel 100 and the center of the barrel bottom of the outer barrel 200, the inner barrel 100 and the outer barrel 200 located at the periphery of the mounting port 40 can be sealed and matched by welding or the like, the stirring shaft 50 can penetrate into the inner barrel 100 through the mounting port 40, the stirring shaft 50 and the periphery of the mounting port 40 can be sealed and matched by a sealing ring or the like, and the stirring shaft 50 is used to install blades to stir the refrigeration medium in the inner barrel 100. The setting of the mounting port 40 facilitates the assembly of the evaporator and the stirring shaft 50, and at the same time provides stable radial positioning for the stirring shaft 50.

[0054] As Figure 3 And Figure 4 In another embodiment of the present application, the bottom of the outer barrel 200 is provided with a connecting portion 240 protruding towards the inner barrel 100, the connecting portion 240 is arranged around the mounting port 40 and is spaced apart from the mounting port 40, and the connecting portion 240 is sealingly connected with the bottom of the inner barrel 100.

[0055] The connecting portion 240 is configured as a ring-shaped protrusion structure extending around the mounting port 40, the top of which is in contact with the bottom of the inner barrel 100 and is sealed by welding or bonding, etc. Thus, the heat exchange cavity 10 is formed between the connecting portion 240 and the opening of the outer barrel 200. In addition, the connecting portion 240 is arranged at a distance from the mounting port 40. The distance can be set according to requirements. The inner barrel 100 and the outer barrel 200 are not in contact in the area between the mounting port 40 and the connecting portion 240. Thus, an annular air gap can be formed between the connecting portion 240 and the mounting port 40. The air gap can reduce the heat transfer between the mounting port 40 and the refrigerant, eliminate the condensation phenomenon at the root of the stirring shaft 50, and ensure the reliability of the ice cream machine.

[0056] As Figure 3 In another embodiment of the present application, a limiting portion 250 is arranged at the bottom of the outer barrel 200. The limiting portion 250 extends along the circumference of the mounting port 40 and is used to limit the stirring shaft 50 in cooperation with the stirring shaft 50. Thus, the assembly position accuracy of the evaporator, the stirring shaft 50 and other components can be ensured, and the assembly precision is improved.

[0057] In another embodiment of the present application, a heat insulation port 260 is arranged at the bottom of the outer barrel 200. The heat insulation port 260 is arranged between the connecting portion 240 and the mounting port 40. The heat insulation port 260 is arranged at a distance around the mounting port 40. When the low-temperature refrigerant passes through the bottom of the outer barrel 200, the heat needs to bypass the heat insulation port 260, effectively extending the heat conduction path length and further reducing the possibility of supercooling of the stirring shaft 50 and condensation.

[0058] As Figure 2 In another embodiment of the present application, the evaporator further comprises: an inlet pipe 300 connected to the refrigerant inlet 20 and extending away from the outer barrel 200; and an outlet pipe 400 connected to the refrigerant outlet 30 and extending towards the bottom side of the outer barrel 200. In this scheme, the inlet pipe 300 can penetrate into the refrigerant inlet 20 and form a seal with the refrigerant inlet 20. The outlet pipe 400 can penetrate into the refrigerant outlet 30 and form a seal with the refrigerant outlet 30. The inlet pipe 300 and the outlet pipe 400 can be connected to the pipe of the refrigerant circulation. The inlet pipe 300 and the outlet pipe 400 can be arranged in parallel and both can extend towards the bottom of the outer barrel 200 to facilitate assembly.

[0059] As Figure 1 and Figure 2In another embodiment of the present application, the evaporator further comprises an insulation barrel 500, which is arranged outside the outer barrel 200, and the insulation barrel 500 is filled with insulation material between the outer barrel 200. Wherein, the insulation barrel 500 can be arranged outside the outer barrel 200, the top of the insulation barrel 500 is provided with an opening, the opening is matched with the flange of the inner barrel 100 and is sealed by welding or bonding, etc. An enclosed chamber is formed between the outer barrel 200 and the inner barrel 100, which can be filled with foaming material for insulation, so as to reduce the heat exchange between the refrigerant and the outside through the outer barrel 200, ensure sufficient heat exchange between the refrigerant and the inner barrel 100, and improve the refrigeration efficiency; in addition, in the present scheme, the insulation barrel 500 can also be made of foaming material to further improve the insulation effect.

[0060] The present application also provides an ice cream machine, which comprises a shell 60 and an evaporator arranged on the shell 60, and a compressor, an evaporator and a pipeline for circulating refrigerant are arranged in the shell 60, and the pipeline is communicated with the heat exchange chamber 10 of the evaporator; the specific structure of the evaporator is referred to the above embodiments, and since the ice cream machine adopts all the technical solutions of the above embodiments, it has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0061] The above is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. An evaporator for an ice cream machine, characterized in that, The evaporator comprises: an inner barrel for containing a medium to be frozen; an outer barrel sleeved outside the inner barrel; wherein two ends of the outer barrel are sealingly connected with two ends of the inner barrel to form a heat exchange cavity for refrigerant passing between the inner barrel and the outer barrel; a refrigerant inlet is arranged on a barrel bottom of the outer barrel and is inclined or parallel to a bottom of the inner barrel; a refrigerant outlet is arranged on an end of the outer barrel away from the barrel bottom, so that the refrigerant entering the heat exchange cavity is discharged after sequentially passing through the bottom of the inner barrel and the side of the inner barrel; a flow guide part is arranged in the heat exchange cavity, the flow guide part is opposite to the refrigerant inlet, and the flow guide part is used to block and guide the refrigerant along the extension direction of the flow guide part, so that the refrigerant is diffused on the barrel bottom of the outer barrel; the flow guide part is configured as a protrusion on the barrel bottom of the outer barrel, the protrusion is in abutment or gap fit with the bottom of the inner barrel, the protrusion extends around the center of the barrel bottom of the outer barrel to separate the heat exchange cavity into a first chamber and a second chamber, a notch is arranged on the protrusion, and the notch communicates the first chamber and the second chamber; an inner wall of the heat exchange cavity between the flow guide part and the refrigerant inlet is provided with a recess, and the recess is arranged protruding towards the outside of the outer barrel, so that the refrigerant entering the heat exchange cavity first impacts the recess.

2. The evaporator of claim 1, wherein, The notch and the refrigerant inlet are arranged in a circumferential direction of the outer barrel; and / or the notch and the refrigerant outlet are arranged in a circumferential direction of the outer barrel.

3. The evaporator of claim 1, wherein, The evaporator further comprises a mounting port penetrating the barrel bottom of the inner barrel and the bottom of the outer barrel, and the mounting port is used for the stirring shaft to penetrate into the inner barrel.

4. The evaporator of claim 3, wherein The bottom of the outer barrel is provided with a connecting part protruding towards the inner barrel, the connecting part is arranged around the mounting port and is spaced apart from the mounting port, and the connecting part is sealingly connected with the bottom of the inner barrel.

5. The evaporator of claim 4, wherein, The bottom of the outer barrel is provided with a limiting part extending along the circumference of the mounting port, and the limiting part is used to limit the stirring shaft in cooperation with the stirring shaft; and / or the bottom of the outer barrel is provided with a heat insulation port, the heat insulation port is arranged between the connecting part and the mounting port, and the heat insulation port is spaced apart from the mounting port around the mounting port.

6. An ice cream machine characterized in that, The evaporator comprises any one of claims 1 to 5.

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