Evaporator and smoothie maker

Abstract

The utility model discloses an evaporator and slushy machine relates to slushy machine technical field, wherein, the evaporator includes the outer tube and the inner tube, and the inner tube is embedded in the inner side of outer tube, and the inner tube with heat exchange cavity is formed between the outer tube, and the inner tube is provided with the refrigerant import and refrigerant export that communicate heat exchange cavity, and the refrigerant export is close to the top of inner tube setting, the setting height of refrigerant import is lower than the setting height of refrigerant export, the outlet pipe is inserted into the inner side of inner tube, and is communicated with the refrigerant export, the inlet pipe is inserted into the inner side of inner tube, and is communicated with the refrigerant import. The technical scheme provided by the utility model can improve the processing efficiency of slushy machine.

Description

Technical Field

[0001] This utility model relates to the field of smoothie machine technology, and in particular to an evaporator and a smoothie machine. Background Technology

[0002] A smoothie maker is a device used to make smoothies and has gradually become a common electrical appliance. Smoothie makers have a refrigeration system, which includes a compressor, condenser, and evaporator. However, the evaporator structure of current smoothie makers is usually a coil type, meaning a heat exchange cylinder is installed with the evaporator tubes wound around the inside of the heat exchange cylinder. This design results in a relatively high thermal resistance in the evaporator, leading to lower production efficiency for the smoothie maker. Utility Model Content

[0003] The main purpose of this invention is to propose an evaporator and a smoothie machine, which aims to improve the processing efficiency of the smoothie machine.

[0004] To achieve the above objectives, the evaporator proposed in this utility model includes: outer cylinder; An inner cylinder is embedded inside the outer cylinder, and a heat exchange cavity is formed between the inner cylinder and the outer cylinder. The inner cylinder has a refrigerant inlet and a refrigerant outlet that communicate with the heat exchange cavity. The refrigerant outlet is located near the top of the inner cylinder, and the opening height of the refrigerant inlet is lower than the opening height of the refrigerant outlet. An outlet pipe extends into the inner side of the inner cylinder and connects to the refrigerant outlet; and The inlet pipe extends into the inner side of the inner cylinder and is connected to the refrigerant inlet.

[0005] In one embodiment, the evaporator further includes a first end cap and a second end cap disposed at opposite ends of the inner cylinder along its axial direction, and the inner cylinder, the outer cylinder, the first end cap, and the second end cap together enclose the heat exchange cavity. The refrigerant outlet is disposed near the first end cap, the refrigerant outlet is disposed near the second end cap, and both the inlet pipe and the outlet pipe are inserted into the inner side of the inner cylinder from the end of the inner cylinder facing the first end cap.

[0006] In one embodiment, the inlet pipe includes a capillary section located inside the inner cylinder.

[0007] In one embodiment, the inlet pipe includes a connecting pipe section and a capillary pipe section. One end of the connecting pipe section is inserted into the refrigerant inlet, and the capillary pipe section is inserted at the end of the connecting pipe section away from the refrigerant inlet. A portion of the connecting pipe section circumferentially bulges outward to form a first expansion section, which abuts against the side of the inner cylinder away from the heat exchange chamber; and / or, The end of the outlet pipe is inserted into the refrigerant outlet, and a portion of the outlet pipe circumferentially bulges outward to form a second expansion section, which abuts against the side of the inner cylinder away from the heat exchange chamber.

[0008] In one embodiment, the inlet pipe is inserted into the refrigerant inlet, and the insertion depth of the inlet pipe is greater than or equal to 0.5 mm and less than or equal to 1.5 mm; and / or, The outlet pipe is inserted into the refrigerant inlet / outlet, and the insertion depth of the outlet pipe is greater than or equal to 0.5 mm and less than or equal to 1.5 mm.

[0009] In one embodiment, the refrigerant inlet is located near the bottom of the inner cylinder; and / or, The refrigerant outlet is located at the top of the inner cylinder.

[0010] In one embodiment, the thickness of the outer cylinder is greater than or equal to 0.6 mm and less than or equal to 2 mm; and / or, The thickness of the inner cylinder is greater than or equal to the thickness of the outer cylinder.

[0011] In one embodiment, the inner side of the inner cylinder is filled with thermal insulation material.

[0012] This utility model also proposes a smoothie machine, including a base and a hopper disposed on the base, wherein the evaporator described above is fixedly installed on the base and located in the hopper.

[0013] In one embodiment, the smoothie machine further includes a stirring structure and a driving structure. The stirring structure is disposed in the hopper and surrounds the outer periphery of the evaporator. The driving structure includes a drive motor and a drive shaft mounted on the drive motor. The drive motor is disposed in the machine base. The drive shaft passes through the evaporator and is connected to the stirring structure to drive the stirring structure to rotate relative to the evaporator. The axial direction of the evaporator extends obliquely downward in a direction away from the drive structure.

[0014] This invention employs a nested inner and outer cylinder, forming a heat exchange chamber. The inner cylinder has a refrigerant inlet and outlet connected to the heat exchange chamber, with the refrigerant outlet positioned near the top of the inner cylinder. The refrigerant inlet is positioned lower than the refrigerant outlet. An outlet pipe extends into the inner cylinder and connects to the refrigerant outlet; an inlet pipe extends into the inner cylinder and connects to the refrigerant inlet. Therefore, in this design, during evaporator operation, cooling energy is transferred to the raw materials solely through the outer cylinder, achieving heat conduction through a single-layer structure. Compared to existing coil-type evaporators, which require a double-layer structure for heat conduction, this design reduces one heat layer during heat transfer, thereby improving the evaporator's heat exchange efficiency and ultimately increasing the production efficiency of the smoothie machine. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 A schematic diagram of an angle structure of an embodiment of the smoothie machine provided by this utility model; Figure 2 for Figure 1 Another structural diagram of the medium-sized smoothie machine; Figure 3 for Figure 2 A cross-sectional view of the slush machine along AA; Figure 4 for Figure 1 Schematic diagram of the structure of the evaporator; Figure 5 for Figure 4 Cross-sectional view of the evaporator along BB; Figure 6 for Figure 5 A magnified view of a section at point A in the middle; Figure 7 for Figure 4 A cross-sectional view of the central evaporator along the CC direction; Figure 8 for Figure 7 A magnified view of a section at point B in the middle; Figure 9 for Figure 7 A magnified view of a section at point C; Figure 10 for Figure 1 A schematic diagram of the installation structure of the evaporator and casing.

[0017] Explanation of icon numbers: 1. Evaporator; 11. Outer cylinder; 12. Inner cylinder; 121. Heat exchange chamber; 122. Refrigerant inlet; 123. Refrigerant outlet; 13. Inlet pipe; 131. Capillary section; 1311. Third expansion section; 132. Connecting pipe section; 1321. First expansion section; 1322. Narrowing section; 1323. Flaring section; 14. Export pipe; 141. Second expansion section; 15. First end cap; 151. Sealing ring; 16. Second end cap; 161. Projection; 17. Installation kit; 18. Temperature detector; 2. Base; 21. Stirring structure; 22. Drive structure; 221. Drive motor; 222. Drive shaft; 23. Compressor; 24. Condenser; 3. Material bins.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0020] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0021] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0022] In existing technology, the evaporator of a smoothie machine typically adopts a coil-type structure, meaning the evaporator includes a heat exchange cylinder and evaporating tubes, with the evaporating tubes coiled inside the heat exchange cylinder. Therefore, the cooling energy generated by this evaporator structure must first pass through the evaporating tubes and then through the heat exchange cylinder before it can be transferred to the raw materials, resulting in a relatively high thermal resistance and hindering the transfer of cooling energy. Furthermore, this design, with the evaporating tubes coiled inside the heat exchange cylinder, limits the contact area between the evaporating tubes and the heat exchange cylinder, inevitably creating an air gap between them. This further increases the thermal resistance of the evaporator, leading to poor heat transfer efficiency and negatively impacting the smoothie machine's production efficiency. This utility model proposes an evaporator 1 for use in a slush machine (slush machine). The evaporator 1 is installed in the hopper 3 of the slush machine to cool the raw materials in the hopper 3. The evaporator 1 in this solution can improve its own heat exchange efficiency, thereby improving the production efficiency of the slush machine.

[0023] Please see Figures 1 to 5 In one embodiment of this utility model, the evaporator 1 includes: outer cylinder 11; The inner cylinder 12 is embedded inside the outer cylinder 11, and a heat exchange cavity 121 is formed between the inner cylinder 12 and the outer cylinder 11. The inner cylinder 12 is provided with a refrigerant inlet 122 and a refrigerant outlet 123 that communicate with the heat exchange cavity 121. The refrigerant outlet 123 is located near the top of the inner cylinder 12, and the opening height of the refrigerant inlet 122 is lower than the opening height of the refrigerant outlet 123. The outlet pipe 14 extends into the inner side of the inner cylinder 12 and is connected to the refrigerant outlet 123; and The inlet pipe 13 extends into the inner side of the inner cylinder 12 and is connected to the refrigerant inlet 122.

[0024] Specifically, the inner cylinder 12 is embedded inside the outer cylinder 11, and the two are spaced apart to form a heat exchange cavity 121 between them. This heat exchange cavity 121 is used to contain refrigerant, and the refrigerant flows within the heat exchange cavity 121 and conducts the cooling energy to the hopper 3 through the outer cylinder 11. Therefore, in this solution, during the operation of the evaporator 1, the cooling energy only needs to be transferred to the raw material through the outer cylinder 11, that is, heat conduction can be achieved through a single-layer structure. Compared with the coil-type evaporator 1 in the prior art, the evaporator 1 in the prior art requires a double-layer structure to achieve heat conduction. Therefore, the evaporator 1 in this solution can reduce one heat layer during heat transfer, thereby improving the heat exchange efficiency of the evaporator 1 and thus improving the production efficiency of the smoothie machine. Preferably, the inner cylinder 12 and the outer cylinder 11 are coaxially arranged to ensure the uniformity of the thickness of the heat exchanger and improve the heat exchange uniformity.

[0025] The inner cylinder 12 is equipped with a refrigerant inlet 122 and a refrigerant outlet 123 that connect to the heat exchange chamber 121. The outlet pipe 14 connects to the refrigerant outlet 123 to discharge the refrigerant from the heat exchange chamber 121, and the inlet pipe 13 connects to the refrigerant inlet 122 to introduce refrigerant into the heat exchange chamber 121. The inlet pipe 13, outlet pipe 14, compressor 23, condenser 24, and evaporator 1 together form the refrigerant circuit within the smoothie machine. Both the inlet pipe 13 and outlet pipe 14 extend from the inside of the inner cylinder 12 into the evaporator 1 to connect to the refrigerant inlet 122 and refrigerant outlet 123, respectively. This utilizes the available space within the evaporator 1 to house the inlet pipe 13 and outlet pipe 14, facilitates the connection of the inlet pipe 13 and outlet pipe 14 to the inner cylinder 12, and reduces the possibility of installation interference between the inlet pipe 13 and outlet pipe 14 and the stirring structure 21.

[0026] The refrigerant outlet 123 is located near the top of the inner cylinder 12, and the opening height of the refrigerant inlet 122 is lower than the opening height of the refrigerant outlet 123. That is, in this scheme, the evaporator 1 adopts a bottom-in, top-out method to introduce refrigerant into the heat exchange chamber 121. During the introduction process, the refrigerant is affected by gravity and flows upward first, then fills the entire cavity from bottom to top and flows out from the refrigerant outlet 123. This ensures that the refrigerant flows more evenly from the bottom of the evaporator 1 to the refrigerant outlet 123, thereby reducing the possibility of uneven heat exchange in the evaporator 1 and improving the working performance of the smoothie machine.

[0027] In this embodiment, please refer to Figure 3The evaporator 1 is installed horizontally on the slush machine, meaning that the axial direction of the evaporator 1 is approximately parallel to the horizontal direction. At this time, the opening height of the refrigerant inlet 122 is lower than the opening height of the refrigerant outlet 123. That is, the refrigerant inlet 122 and the refrigerant outlet 123 are not overlapped along the circumference of the inner liner. This ensures that the opening height of the refrigerant inlet 122 is lower than the opening height of the refrigerant outlet 123. For example, suppose the evaporator 1 has a horizontal cross-section passing through the axis of the evaporator 1, and the refrigerant outlet 123 is located below the horizontal cross-section. The angle between the axial direction of the refrigerant inlet 122 and the horizontal cross-section is greater than or equal to 45°, thereby ensuring that the refrigerant inlet 122 and the refrigerant outlet 123 have a sufficient height difference, thereby reducing the possibility that the refrigerant may accidentally flow out of the refrigerant outlet 123 due to its own velocity when it enters the heat exchange chamber 121.

[0028] Optionally, the refrigerant outlet 123 is located at the top of the inner cylinder 12, and the refrigerant inlet 122 is located at the bottom of the inner cylinder 12. That is, the axis of the refrigerant outlet 123 and the axis of the refrigerant inlet 122 are both perpendicular to the horizontal cross section. This ensures that the refrigerant inlet 122 and the refrigerant outlet 123 have a sufficient height difference, and that the refrigerant is completely filled in the heat exchange chamber 121 before flowing out from the refrigerant outlet 123.

[0029] Optionally, the refrigerant inlet 122 is located near the bottom of the inner cylinder 12, that is, the angle between the axis of the refrigerant inlet 122 and the horizontal cross section is greater than 45°, thereby further ensuring that the refrigerant inlet 122 and the refrigerant outlet 123 have a sufficient height difference.

[0030] In other embodiments, the evaporator 1 can also be installed vertically on the blender, that is, the axial direction of the evaporator 1 is approximately parallel to the vertical direction. In this case, the opening height of the refrigerant inlet 122 is lower than the opening height of the refrigerant outlet 123. That is, the refrigerant inlet 122 and the refrigerant outlet 123 are offset along the axial direction of the inner cylinder, so that the opening height of the refrigerant inlet 122 is lower than the opening height of the refrigerant outlet 123. At this time, the refrigerant inlet 122 is located on one side of the upper end of the inner cylinder 12 (not the upper end face) in the axial direction, and the refrigerant outlet 123 can be located on one side of the lower end of the inner cylinder 12 in the axial direction or directly on the lower end face of the inner cylinder 12. For ease of explanation, the following description uses the example of the evaporator 1 being installed horizontally on the blender.

[0031] Please see Figures 1 to 5In an embodiment of this utility model, the evaporator 1 further includes a first end cap 15 and a second end cap 16 disposed at opposite ends of the inner cylinder 12 along its axial direction. The inner cylinder 12, the outer cylinder 11, the first end cap 15, and the second end cap 16 together enclose the heat exchange chamber 121. The refrigerant outlet 123 is disposed near the first end cap 15 and near the second end cap 16. The inlet pipe 13 and the outlet pipe 14 are both inserted into the inner cylinder 12 from the end of the inner cylinder 12 facing the first end cap 15. Specifically, the first end cap 15 and the second end cap 16 are disposed at opposite ends of the inner cylinder 12 along its axial direction to respectively block the openings at opposite ends of the heat exchange chamber 121, thereby allowing the inner cylinder 12, the outer cylinder 11, the first end cap 15, and the second end cap 16 to together enclose the heat exchange chamber 121. Both the inlet pipe 13 and the outlet pipe 14 are inserted into the inner side of the inner cylinder 12 from the end of the inner cylinder 12 facing the first end cap 15. To facilitate the installation of the inlet pipe 13 and the outlet pipe 14, the first end cap 15 has an opening, and the inner periphery of the first end cap 15 abuts against the inner cylinder 12, thereby corresponding to the outer periphery of the second end cap 16 abutting against the outer cylinder 11, which facilitates the installation of the stirring structure 21. Furthermore, the refrigerant outlet 123 is located near the first end cap 15 and near the second end cap 16. That is, the refrigerant outlet 123 and the refrigerant inlet 122 are offset along the axial direction of the evaporator 1, thereby further increasing the distance between the refrigerant inlet 122 and the refrigerant outlet 123, reducing the possibility that the refrigerant introduced into the heat exchange chamber 121 by the refrigerant inlet 122 will be directly discharged from the refrigerant outlet 123.

[0032] The first end cap 15 can be welded to the inner cylinder 12 and the outer cylinder 11 respectively. Specifically, the inner periphery of the first end cap 15 is provided with a first annular welding groove to facilitate the welding of the first end cap 15 and the inner cylinder 12. The first end cap 15 is also provided with a first annular positioning groove. One end of the outer cylinder 11 is inserted into the first annular positioning groove to position the welding of the outer cylinder 11 and the first end cap 15. In other embodiments, the first end cap 15 can also be integrally formed with the inner cylinder 12, that is, the first end cap 15 is formed by stamping and flanging one end of the inner cylinder 12 outward. The second end cap 16 can be welded to both the inner cylinder 12 and the outer cylinder 11. Specifically, the outer periphery of the second end cap 16 is provided with a second annular welding groove to facilitate welding between the second end cap 16 and the outer cylinder 11. The second end cap 16 also has a second annular positioning groove, into which one end of the inner cylinder 12 is inserted for positioning during welding of the inner cylinder 12 and the second end cap 16. In other embodiments, the second end cap 16 can also be integrally formed with the outer cylinder 11, i.e., the second end cap 16 is formed by stamping and flanging one end of the outer cylinder 11 inwards. This type of evaporator 1 is easier to process and assemble, thus facilitating the production of the evaporator 1, improving processing efficiency, and reducing the cost of the evaporator 1.

[0033] Furthermore, the inlet pipe 13 includes a capillary section 131, which is located inside the inner cylinder 12. That is, the inlet pipe 13 can also serve as an expansion valve in the refrigerant circuit of the smoothie machine. The location of the capillary section 131 inside the inner cylinder 12 further utilizes the empty space inside the inner cylinder 12 and reduces the distance between the capillary section 131 and the refrigerant inlet 122, thereby improving the heat exchange efficiency.

[0034] Please see Figures 5 to 9 In an embodiment of this utility model, the inlet pipe 13 includes a connecting pipe section 132 and a capillary section 131. One end of the connecting pipe section 132 is inserted into the refrigerant inlet 122, and the capillary section 131 is inserted into the end of the connecting pipe section 132 away from the refrigerant inlet 122. A portion of the connecting pipe section 132 is circumferentially raised outward to form a first expansion section 1321, which abuts against the side of the inner cylinder 12 away from the heat exchange chamber 121. Specifically, a portion of the connecting pipe section 132 bulges outward in the circumferential direction to form a first expansion section 1321. The radius of this first expansion section 1321 is larger than the radius of the end of the connecting pipe section 132 connected to the refrigerant inlet 122, and also larger than the radius of the refrigerant inlet 122. Therefore, when the connecting pipe section 132 is inserted into the refrigerant inlet 122, the first expansion section 1321 abuts against the side of the inner cylinder 12 away from the heat exchange chamber 121, thereby positioning the connecting pipe section 132 for insertion and ensuring the accuracy of insertion. Furthermore, a portion of the connecting pipe section 132 is concave in the circumferential direction to form a contraction section 1322. The diameter of this contraction section 1322 is smaller than the refrigerant inlet 122, but greater than or equal to the outer diameter of the capillary section 131. This ensures that the end of the capillary section 131 is tightly inserted into the inlet pipe 13, thus ensuring the stability of the connection between the connecting pipe section 132 and the capillary section 131. Furthermore, the constricted section 1322 is arranged adjacent to or spaced apart from the first expanded section 1321. The end of the constricted section 1322 away from the refrigerant inlet 122 is also provided with an expanded section 1323, thereby guiding the capillary section 131 to be inserted into the constricted section 1322.

[0035] Furthermore, a local circumferential outward bulge of the capillary segment 131 forms a third expansion segment 1311, which abuts against the end of the connecting pipe segment 132 away from the refrigerant inlet 122, thereby positioning the capillary segment 131 for insertion into the connecting pipe segment 132.

[0036] Furthermore, the insertion depth of the inlet pipe 13 is greater than or equal to 0.5 mm and less than or equal to 1.5 mm. This ensures both the insertion depth of the inlet pipe 13 and the stability of its connection, while also reducing the risk of excessive insertion depth affecting the connection between the inlet pipe 13 and the heat exchange chamber 121. Specifically, the insertion depth of the inlet pipe 13 can be 0.5 mm, 0.7 mm, 1.0 mm, 1.2 mm, 1.5 mm, etc.

[0037] The end of the outlet pipe 14 is inserted into the refrigerant outlet 123, and a portion of the outlet pipe 14 circumferentially bulges outward to form a second expansion section 141. The second expansion section 141 abuts against the side of the inner cylinder 12 away from the heat exchange chamber 121. Specifically, the radius of the second expansion section 141 is larger than the radius of the end of the outlet pipe 14 connected to the refrigerant inlet 122, and larger than the radius of the refrigerant outlet 123. Therefore, when the outlet pipe 14 is inserted into the refrigerant outlet 123, the second expansion section 141 abuts against the side of the inner cylinder 12 away from the heat exchange chamber 121, thereby positioning the outlet and ensuring the accuracy of the outlet insertion.

[0038] Furthermore, the insertion depth of the outlet pipe 14 is greater than or equal to 0.5 mm and less than or equal to 1.5 mm. This ensures both the insertion depth of the outlet pipe 14 and the stability of its connection, while also preventing excessive insertion depth that could affect the connection between the outlet pipe 14 and the heat exchange chamber 121. Specifically, the insertion depth of the outlet pipe 14 can be 0.5 mm, 0.7 mm, 1.0 mm, 1.2 mm, 1.5 mm, etc.

[0039] In this embodiment of the invention, the thickness of the outer cylinder 11 is greater than or equal to 0.6 mm and less than or equal to 2 mm, thereby ensuring the structural strength of the outer cylinder 11 while reducing its thickness, thus further improving the heat exchange efficiency of the evaporator 1. Specifically, the thickness of the outer cylinder 11 can be 0.6 mm, 0.8 mm, 1.0 mm, 1.2 mm, 1.5 mm, 1.7 mm, 2.0 mm, etc. Further, the thickness of the outer cylinder 11 is greater than or equal to 1.0 mm and less than or equal to 1.5 mm.

[0040] Furthermore, the thickness of the inner cylinder 12 is greater than or equal to the thickness of the outer cylinder 11. Since the inner cylinder 12 is the support part of the heat exchanger, appropriately increasing the thickness of the inner cylinder 12 helps the overall structural strength of the evaporator 1, and also increases the thermal resistance of the evaporator 1 to conduct cold energy into its interior, thereby reducing heat loss.

[0041] Furthermore, the inner cylinder 12 is filled with insulation material, which further increases the thermal resistance of the evaporator 1 to conduct cold energy into its interior, reduces heat loss, and allows the cold energy in the heat exchange chamber 121 to be transferred to the outside of the evaporator 1 as much as possible. The insulation material is a foamed material. Since both the outlet pipe 14 and the inlet pipe 13 are partially located inside the inner cylinder 12, they are housed within the insulation material.

[0042] See Figure 3 and Figure 10 The stirring structure 21 is located on the outer periphery of the evaporator 1. The driving structure 22 includes a driving motor 221 and a transmission shaft 222. The driving motor 221 is located at one end of the evaporator 1, and the transmission shaft 222 passes through the evaporator 1 and is connected to the outer periphery of the evaporator 1. Therefore, the transmission shaft 222 needs to pass through the insulation material and rotate relative to the evaporator 1. Thus, the evaporator 1 also includes a mounting sleeve 17, which is fixed to the inner side of the inner liner. The transmission shaft 222 passes through the mounting sleeve 17. In order to facilitate the fixing of the mounting sleeve 17, the second end cover 16 has an inwardly protruding protrusion 161 at the axis. One end of the bushing is inserted and fixed to the protrusion 161, and the protrusion 161 has a through hole. The transmission shaft 222 passes through the mounting sleeve 17 and the through hole in sequence to be connected to the stirring structure 21.

[0043] In one embodiment, the inner cylinder 12 is made of stainless steel, thereby reducing the cost of the inner cylinder 12 and thus controlling the overall cost of the evaporator 1.

[0044] In another embodiment, the outer cylinder 11 is made of stainless steel, thereby reducing the manufacturing cost of the outer cylinder 11 and controlling the overall cost of the evaporator 1. Both the first end cap 15 and the second end cap 16 can be made of sheet metal.

[0045] This utility model also proposes a smoothie machine, which includes a base 2, a hopper 3 disposed on the base 2, and an evaporator 1. The specific structure of the evaporator 1 is as described in the above embodiments. Since this smoothie machine adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The evaporator 1 is fixedly installed on the base 2 and located inside the hopper 3. Specifically, the hopper 3 has an opening at one end, and its opening end is sealed to one side of the base. The evaporator 1 is fixed to one side of the base 2, thereby enabling the evaporator 1 to cool the hopper 3 and facilitating the installation of the evaporator 1. The evaporator 1 can be installed on one side of the base 2 via a first end cap 15. For example, one side of the base 2 has an installation port, and the first end cap 15 is fastened to one side of the base 2 by fasteners. The first end cap 15 and the outer periphery of the installation port are sealed together by a sealing ring 151.

[0046] When the evaporator 1 is installed horizontally inside the smoothie machine, in one embodiment, see [reference needed]. Figures 1 to 5 and Figure 10 The smoothie machine also includes a stirring structure 21 and a drive structure 22. The stirring structure 21 is located inside the hopper 3 and is arranged around the outer periphery of the evaporator 1. The drive structure 22 includes a drive motor 221 and a drive shaft 222 that is mounted on the drive motor 221. The drive motor 221 is located inside the base 2. The drive shaft 222 passes through the evaporator 1 and is connected to the stirring structure 21 to drive the stirring structure 21 to rotate relative to the evaporator 1. The axial direction of the evaporator 1 extends obliquely downward in a direction away from the drive structure 22.

[0047] Specifically, the evaporator 1 extends obliquely downwards in the direction away from the drive structure 22. That is, the evaporator 1 does not extend completely horizontally within the hopper 3, but is tilted to a certain extent, thereby increasing the stirring space of the stirring structure 21 and improving stirring efficiency. Therefore, to ensure that the evaporator 1 can be stably installed at an angle within the hopper 3, one side of the base 2 is tilted in the vertical direction, meaning the axial direction of the mounting port forms an angle with the horizontal direction. The second end cap 16 is securely connected to one side of the base 2. Correspondingly, the drive structure 22 is also installed at an angle within the smoothie machine. The angle between the axial direction of the evaporator 1 and the horizontal direction is less than or equal to 20°, such as 5°, 10°, 15°, or 20°. In other embodiments, the axial direction of the evaporator 1 extends obliquely upwards in the direction away from the drive structure 22. A temperature detector 18 is provided on the second end cap 16 to detect the temperature of the hopper 3.

[0048] The above are merely exemplary embodiments of this utility model and are not intended to limit the scope of this utility model. Any equivalent structural transformations made based on the technical concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the protection scope of this utility model.

Claims

1. An evaporator, characterized in that, include: outer cylinder; An inner cylinder is embedded inside the outer cylinder, and a heat exchange cavity is formed between the inner cylinder and the outer cylinder. The inner cylinder has a refrigerant inlet and a refrigerant outlet that communicate with the heat exchange cavity. The refrigerant outlet is located near the top of the inner cylinder, and the opening height of the refrigerant inlet is lower than the opening height of the refrigerant outlet. An outlet pipe extends into the inner side of the inner cylinder and connects to the refrigerant outlet; and An inlet pipe extends into the inner side of the inner cylinder and connects to the refrigerant inlet.

2. The evaporator as described in claim 1, characterized in that, The evaporator further includes a first end cap and a second end cap located at opposite ends of the inner cylinder along its axial direction. The inner cylinder, the outer cylinder, the first end cap, and the second end cap together enclose the heat exchange chamber. The refrigerant outlet is located near the first end cap, and the refrigerant outlet is located near the second end cap. Both the inlet pipe and the outlet pipe are inserted into the inner cylinder from the end of the inner cylinder facing the first end cap.

3. The evaporator as described in claim 2, characterized in that, The inlet pipe includes a capillary section, which is located inside the inner cylinder.

4. The evaporator as claimed in claim 1, characterized in that, The inlet pipe includes a connecting pipe section and a capillary pipe section. One end of the connecting pipe section is inserted into the refrigerant inlet, and the capillary pipe section is inserted at the end of the connecting pipe section away from the refrigerant inlet. A portion of the connecting pipe section circumferentially bulges outward to form a first expansion section, which abuts against the side of the inner cylinder away from the heat exchange chamber; and / or, The end of the outlet pipe is inserted into the refrigerant outlet, and a portion of the outlet pipe circumferentially bulges outward to form a second expansion section, which abuts against the side of the inner cylinder away from the heat exchange chamber.

5. The evaporator as claimed in claim 1, characterized in that, The inlet pipe is inserted into the refrigerant inlet, and the insertion depth of the inlet pipe is greater than or equal to 0.5 mm and less than or equal to 1.5 mm; and / or, The outlet pipe is inserted into the refrigerant inlet / outlet, and the insertion depth of the outlet pipe is greater than or equal to 0.5 mm and less than or equal to 1.5 mm.

6. The evaporator as claimed in claim 1, characterized in that, The refrigerant inlet is located near the bottom of the inner cylinder; and / or, The refrigerant outlet is located at the top of the inner cylinder.

7. The evaporator as claimed in claim 1, characterized in that, The thickness of the outer cylinder is greater than or equal to 0.6 mm and less than or equal to 2 mm; and / or, The thickness of the inner cylinder is greater than or equal to the thickness of the outer cylinder.

8. The evaporator according to any one of claims 1 to 7, characterized in that, The inner cylinder is filled with thermal insulation material.

9. A smoothie maker, characterized in that, The device includes a base and a hopper disposed on the base. The evaporator, as described in any one of claims 1 to 8, is fixedly installed on the base and located within the hopper.

10. The smoothie machine as described in claim 9, characterized in that, The smoothie machine also includes a stirring structure and a driving structure. The stirring structure is located inside the hopper and on the outer periphery of the evaporator. The driving structure includes a drive motor and a drive shaft mounted on the drive motor. The drive motor is located inside the machine base. The drive shaft passes through the evaporator and is connected to the stirring structure to drive the stirring structure to rotate relative to the evaporator. The axial direction of the evaporator extends obliquely downward in a direction away from the drive structure.

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