Evaporator and smoothie maker

Abstract

The utility model discloses an evaporator and slushy machine relates to slushy machine technical field, wherein, evaporator includes evaporator body, and is located at the outlet pipe and import pipe of evaporator body, and evaporator body includes the inner tube and outer tube of mutual embedding, and form the heat exchange chamber between the inner tube and the outer tube, the outlet pipe is located evaporator body, and the outlet pipe is through first intercommunication position intercommunication heat exchange chamber, and first intercommunication position is close to the top of evaporator body and sets up, the import pipe is located evaporator body, and the import pipe is through second intercommunication position intercommunication heat exchange chamber, and the set height of second intercommunication position is lower than the set height of first intercommunication position. The utility model provides technical scheme 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: The evaporator body includes an inner cylinder and an outer cylinder nested together, and a heat exchange cavity is formed between the inner cylinder and the outer cylinder; An outlet pipe is disposed on the evaporator body, and the outlet pipe is connected to the heat exchange chamber via a first connecting position, the first connecting position being disposed near the top of the evaporator body; and An inlet pipe is provided on the evaporator body, and the inlet pipe is connected to the heat exchange chamber through a second connecting position, and the setting height of the second connecting position is lower than the setting height of the first connecting position.

[0005] In one embodiment, the second communication position is disposed near the bottom of the evaporator body; and / or, The first connecting position is located at the top of the evaporator body.

[0006] In one embodiment, the evaporator body is divided into an upper half and a lower half along a cross section through its axis, with the first connecting position located in the upper half and the second connecting position located in the lower half.

[0007] In one embodiment, the evaporator body further includes a first end cap and a second end cap disposed at opposite ends of the inner cylinder along the 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 outlet pipe and the inlet pipe are both inserted into the heat exchange cavity through the first end cap, and the insertion depth of the inlet pipe is different from that of the outlet pipe. The first communication position is the port of the outlet pipe in the heat exchange cavity, and the second communication position is the port of the inlet pipe in the heat exchange cavity.

[0008] In one embodiment, the insertion depth of the inlet pipe is greater than the insertion depth of the outlet pipe.

[0009] In one embodiment, the axial side of the insertion section into the heat exchange chamber of the inlet pipe is provided with a plurality of filling ports, which are spaced apart along the axial direction of the insertion section.

[0010] In one embodiment, the minimum depth of the filling port within the heat exchange chamber is greater than the insertion depth of the outlet pipe.

[0011] In one embodiment, the first connection position is a refrigerant outlet located in the inner cylinder, and the outlet pipe is connected to the refrigerant outlet. The second connection position is a refrigerant inlet located in the inner cylinder, and the inlet pipe is connected to the refrigerant inlet. The inlet pipe and the outlet pipe extend into the inner side of the inner cylinder from the same end of the inner cylinder, and the refrigerant inlet and the refrigerant outlet are offset along the axial direction of the evaporator body.

[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 between them. An outlet pipe is located within the evaporator body and connects to the heat exchange chamber via a first connecting point positioned near the top of the evaporator body. An inlet pipe is also located within the evaporator body and connects to the heat exchange chamber via a second connecting point, positioned lower than the first connecting point. The 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 This is a schematic diagram of the structure of an embodiment of the evaporator provided by this utility model; Figure 2 for Figure 1 Axial cross-sectional view of the evaporator; Figure 3 for Figure 1 Exploded view of the evaporator; Figure 4 A schematic diagram of another embodiment of the evaporator provided by this utility model; Figure 5 for Figure 4 Axial cross-sectional view of the evaporator; Figure 6 A schematic diagram of an angle structure of another embodiment of the smoothie machine provided by this utility model; Figure 7 for Figure 6 Another structural diagram of the medium-sized smoothie machine; Figure 8 for Figure 7 A cross-sectional view of the slush machine along AA; Figure 9 for Figure 6 Cross-sectional view of the evaporator.

[0017] Explanation of icon numbers: 1. Evaporator body; 101. First connecting position; 102. Second connecting position; 11. Outer cylinder; 12. Inner cylinder; 121. Heat exchange chamber; 122. Refrigerant inlet; 123. Refrigerant outlet; 13. Inlet pipe; 131. Capillary tube section; 132. Connecting pipe section; 133. Charging port; 134. Insertion section; 14. Outlet pipe; 15. First end cap; 151. Sealing ring; 16. Second end cap; 161. Protrusion; 17. Mounting sleeve; 18. Temperature detector; 2. Base; 21. Stirring structure; 22. Drive structure; 221. Drive motor; 222. Transmission shaft; 23. Compressor; 24. Condenser; 3. Hopper.

[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 conducted 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 and negatively impacting the production efficiency of the smoothie machine.

[0023] In view of this, the present invention proposes an evaporator for use in a slush machine (slush machine). The evaporator is located in the hopper 3 of the slush machine to cool the raw materials in the hopper 3. The evaporator in this solution can improve its own heat exchange efficiency, thereby improving the production efficiency of the slush machine.

[0024] Please see Figures 1 to 5 , Figure 9In one embodiment of this utility model, the evaporator includes: The evaporator body 1 includes an inner cylinder 12 and an outer cylinder 11 nested together, and a heat exchange cavity 121 is formed between the inner cylinder 12 and the outer cylinder 11. An outlet pipe 14 is provided on the evaporator body 1, and the outlet pipe 14 is connected to the heat exchange chamber 121 through a first connecting position 101, which is located near the top of the evaporator body 1; and An inlet pipe 13 is located on the evaporator body 1, and the inlet pipe 13 is connected to the heat exchange chamber 121 through the second connecting position 102, and the setting height of the second connecting position 102 is lower than the setting height of the first connecting position 101.

[0025] 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, 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 in the prior art, the evaporator in the prior art requires a double-layer structure to achieve heat conduction. Therefore, the evaporator in this solution can reduce one heat conduction layer during heat transfer, thereby improving the heat exchange efficiency of the evaporator 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 exchange cavity 121 and improve the heat exchange uniformity.

[0026] The inner cylinder 12 is provided with a second connecting position 102 and a first connecting position 101 that connect to the heat exchange chamber 121. The outlet pipe 14 is connected to the first connecting position 101 to discharge the refrigerant in the heat exchange chamber 121. The inlet pipe 13 is connected to the second connecting position 102 to introduce the refrigerant into the heat exchange chamber 121. The inlet pipe 13, the outlet pipe 14, the compressor 23, the condenser 24 and the evaporator together form the refrigerant circuit in the slush machine.

[0027] The first connecting position 101 is located near the top of the evaporator body 1, and the opening height of the second connecting position 102 is lower than the opening height of the first connecting position 101. That is, in this scheme, the evaporator 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 first connecting position 101. This ensures that the refrigerant flows more evenly from the bottom of the evaporator to the first connecting position 101, thereby reducing the possibility of uneven heat exchange in the evaporator and improving the working performance of the smoothie machine.

[0028] In this embodiment, the evaporator is installed horizontally on the smoothie machine, that is, the axial direction of the evaporator is approximately parallel to the horizontal direction. At this time, the opening height of the second connecting position 102 is lower than the opening height of the first connecting position 101. That is, the second connecting position 102 and the first connecting position 101 are not overlapped along the circumference of the evaporator body 1, so as to achieve that the opening height of the second connecting position 102 is lower than the opening height of the first connecting position 101. For example, suppose the evaporator has a horizontal cross section through the axis of the evaporator, and the first connecting position 101 is located below the horizontal cross section. The angle between the axial direction of the second connecting position 102 and the horizontal cross section is greater than or equal to 45°, thereby ensuring that the second connecting position 102 and the first connecting position 101 have a sufficient height difference, thereby reducing the possibility that the refrigerant may accidentally flow out of the first connecting position 101 due to its own velocity when it enters the heat exchange chamber 121. That is, the evaporator body 1 is divided into an upper half and a lower half along its axis, the outlet pipe 14 is located in the upper half, and the inlet pipe 13 is located in the lower half.

[0029] Optionally, the first connecting position 101 is located at the top of the inner cylinder 12, and the second connecting position 102 is located at the bottom of the inner cylinder 12. That is, the line connecting the distance from the first connecting position 101 to the axis of the evaporator body 1 and the line connecting the distance from the second connecting position 102 to the axis of the evaporator body 1 are both perpendicular to the horizontal cross section. This ensures that the second connecting position 102 and the first connecting position 101 have a sufficient height difference, and also ensures that the refrigerant is completely filled in the heat exchange chamber 121 before flowing out from the first connecting position 101.

[0030] Optionally, the second connecting position 102 is located near the bottom of the inner cylinder 12, that is, the angle between the line connecting the second connecting position 102 to the axis of the evaporator body 1 and the horizontal section is greater than 45°, thereby further ensuring that the second connecting position 102 and the first connecting position 101 have a sufficient height difference.

[0031] In other embodiments, the evaporator can also be installed vertically on the blender, meaning the evaporator's axis 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. In this case, the refrigerant inlet 122 is located on one side of the upper end of the inner cylinder 12's axial direction (not the upper end face), and the refrigerant outlet 123 can be located on one side of the lower end of the inner cylinder 12's axial direction or directly on the lower end face of the inner cylinder 12. For ease of explanation, the following description uses a horizontally installed evaporator on the blender as an example.

[0032] It should be noted that the first connection position 101 is not necessarily the installation position of the outlet pipe 14 and the evaporator. For example, when the outlet pipe 14 is inserted into the heat exchange chamber 121, the first connection position 101 is the pipe opening of the outlet pipe 14 in the heat exchange chamber 121. The second connection position 102 is not necessarily the installation position of the inlet pipe 13 and the evaporator. For example, when the inlet pipe 13 is inserted into the heat exchange chamber 121, the second connection position 102 is the pipe opening of the inlet pipe 13 in the heat exchange chamber 121.

[0033] Please see Figures 1 to 3 In an embodiment of this utility model, the evaporator body 1 further includes a first end cap 15 and a second end cap 16 disposed at opposite ends of the inner cylinder 12 along the axial direction. The inner cylinder 12, the outer cylinder 11, the first end cap 15 and the second end cap 16 together form a heat exchange chamber 121. The outlet pipe 14 and the inlet pipe 13 are both inserted into the heat exchange chamber 121 through the first end cap 15. The insertion depth of the inlet pipe 13 is different from that of the outlet pipe 14. The first connecting position 101 is the port of the outlet pipe 14 in the heat exchange chamber 121, and the second connecting position 102 is the port of the inlet pipe 13 in the heat exchange chamber 121.

[0034] Specifically, the first end cap 15 and the second end cap 16 are respectively disposed at opposite ends of the inner cylinder 12 along the axial direction, and are used to seal the openings at opposite ends of the heat exchange cavity 121, so that the inner cylinder 12, the outer cylinder 11, the first end cap 15 and the second end cap 16 together enclose the heat exchange cavity 121. Furthermore, both the outlet pipe 14 and the inlet pipe 13 are inserted into the heat exchange cavity 121 through the first end cap 15, that is, the inlet pipe 13 and the outlet pipe 14 are installed from the same end of the evaporator body 1, thereby facilitating the installation of the inlet pipe 13 and the outlet pipe 14. Furthermore, the insertion depth of the inlet pipe 13 is different from that of the outlet pipe 14. The first connecting position 101 is the outlet of the outlet pipe 14 in the heat exchange chamber 121, and the second connecting position 102 is the outlet of the inlet pipe 13 in the heat exchange chamber 121. That is, the first connecting position 101 and the second connecting position 102 are staggered along the axial direction of the evaporator, thereby further increasing the distance between the first connecting position 101 and the second connecting position 102 and reducing the possibility that the refrigerant introduced into the heat exchange chamber 121 by the inlet pipe 13 will be directly discharged from the outlet pipe 14.

[0035] Furthermore, the insertion depth of the inlet pipe 13 is greater than that of the outlet pipe 14. This allows for preferential refrigerant flow from the deepest part of the heat exchange chamber 121, preventing excessive refrigerant pressure that could affect the flow. It also facilitates the placement of multiple charging ports 133 along the axial side of the insertion section 134 of the inlet pipe 13 into the heat exchange chamber 121, improving charging efficiency and uniformity of refrigerant flow into the chamber 121, thus enhancing heat exchange performance. The multiple charging ports 133 are spaced apart axially along the insertion section 134, collectively guiding the refrigerant flow within the heat exchange chamber 121 without requiring additional guiding structures, further improving refrigerant charging uniformity. Preferably, the minimum depth of the filling port 133 within the heat exchange chamber 121 is greater than the insertion depth of the outlet pipe 14; that is, the depth of the filling port 133 closest to the first end cap 15 among the plurality of filling ports 133 is still greater than the insertion depth of the outlet pipe 14. In other embodiments, the minimum depth of the filling port 133 within the heat exchange chamber 121 is less than the insertion depth of the outlet pipe 14. In other embodiments, the insertion depth of the inlet pipe 13 is greater than the insertion depth of the outlet pipe 14.

[0036] Among them, reference Figure 9 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 structure makes processing and assembly easier, thereby facilitating evaporator production, improving processing efficiency, and reducing evaporator manufacturing costs.

[0037] Compared to the embodiment where both the inlet pipe 13 and the outlet pipe 14 have first end caps 15 inserted into the heat exchange chamber 121, in another embodiment, see [reference needed] Figures 4 to 9The first connecting position 101 is a refrigerant outlet 123 located in the inner cylinder 12, and the outlet pipe 14 is connected to the refrigerant outlet 123. The second connecting position 102 is a refrigerant inlet 122 located in the inner cylinder 12, and the inlet pipe 13 is connected to the refrigerant inlet 122. The inlet pipe 13 and the outlet pipe 14 extend into the inner side of the inner cylinder 12 from the same end of the inner cylinder 12, and the refrigerant inlet 122 and the refrigerant outlet 123 are misaligned along the axial direction of the evaporator body 1. Specifically, the evaporator also includes a first end cap 15 and a second end cap 16 located 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 form the heat exchange chamber 121. Preferably, the refrigerant outlet 123 is located near the first end cap 15, and the refrigerant inlet 122 is located near the second end cap 16. Both the inlet pipe 13 and the outlet pipe 14 are inserted into the inner cylinder 12 from the end of the inner cylinder 12 facing the first end cap 15. That is, the refrigerant outlet 123 and the refrigerant inlet 122 are offset along the axial direction of the evaporator, thereby further increasing the distance between the refrigerant inlet 122 and the refrigerant outlet 123 and 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.

[0038] Both the inlet pipe 13 and the outlet pipe 14 extend into the evaporator from the inside of the inner cylinder 12 to connect to the refrigerant inlet 122 and the refrigerant outlet 123, respectively. This utilizes the available space within the evaporator to house the inlet pipe 13 and the outlet pipe 14, facilitating their connection to the inner cylinder 12 and reducing the possibility of installation interference between the inlet pipe 13 and the outlet pipe 14 and the stirring structure 21. Furthermore, the inlet pipe 13 includes a capillary section 131 located inside the inner cylinder 12. This inlet pipe 13 can also function as an expansion valve in the refrigerant circuit of the smoothie machine. The location of the capillary section 131 within the inner cylinder 12 further utilizes the available space inside the inner cylinder 12 and reduces the distance between the capillary section 131 and the refrigerant inlet 122, thereby improving heat exchange efficiency. The inlet pipe 13 also includes a connecting pipe section 132, and the capillary section 131 is connected to the inner cylinder 12 through the connecting pipe section 132.

[0039] 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 and also increases the thermal resistance of the evaporator to conduct cold energy into its interior, thereby reducing heat loss.

[0040] 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.

[0041] 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. Both the first end cap 15 and the second end cap 16 can be made of sheet metal.

[0042] This utility model also proposes a smoothie machine, which includes a base 2, a hopper 3 disposed on the base 2, and an evaporator. The specific structure of the evaporator 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 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 is fixed to one side of the base 2, thereby enabling the evaporator to cool the hopper 3 and facilitating the installation of the evaporator. The evaporator 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.

[0043] When the evaporator is installed horizontally in the smoothie machine, in one embodiment, the smoothie machine also includes a stirring structure 21 and a drive structure 22. The stirring structure 21 is located in the hopper 3 and is arranged around the outer periphery of the evaporator. The drive structure 22 includes a drive motor 221 and a drive shaft 222 that is driven and mounted on the drive motor 221. The drive motor 221 is located in the base 2, and the drive shaft 222 passes through the evaporator and is driven and connected to the stirring structure 21 to drive the stirring structure 21 to rotate relative to the evaporator. The axial direction of the evaporator extends obliquely downward in a direction away from the drive structure 22.

[0044] Specifically, the stirring structure 21 is located on the outer periphery of the evaporator, and 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, and the transmission shaft 222 passes through the evaporator and is connected to the outer periphery of the evaporator. Therefore, the transmission shaft 222 needs to pass through the evaporator and rotate relative to it. Thus, the evaporator also includes a mounting sleeve 17, which is fixed to the inner side of the cylinder. The transmission shaft 222 passes through the mounting sleeve 17. To facilitate the fixing of the mounting sleeve 17, the second end cover 16 has an inwardly protruding protrusion 161 at its axial center. 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.

[0045] The evaporator extends obliquely downwards in the direction away from the drive structure 22. This means the evaporator is not completely horizontal within the hopper 3, but rather tilted to a certain extent, thereby increasing the stirring space of the stirring structure 21 and improving stirring efficiency. Therefore, to ensure the evaporator can be stably installed at an angle within the hopper 3, one side of the base 2 is tilted vertically, 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 evaporator's axial direction and the horizontal direction is less than or equal to 20°, such as 5°, 10°, 15°, or 20°. In other embodiments, the evaporator 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.

[0046] 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: The evaporator body includes an inner cylinder and an outer cylinder nested together, and a heat exchange cavity is formed between the inner cylinder and the outer cylinder; An outlet pipe is disposed on the evaporator body, and the outlet pipe is connected to the heat exchange chamber via a first connecting position, the first connecting position being disposed near the top of the evaporator body; and An inlet pipe is provided on the evaporator body, and the inlet pipe is connected to the heat exchange chamber through a second connecting position, and the setting height of the second connecting position is lower than the setting height of the first connecting position.

2. The evaporator as described in claim 1, characterized in that, The second connecting position is located near the bottom of the evaporator body; and / or, The first connecting position is located at the top of the evaporator body.

3. The evaporator as described in claim 1, characterized in that, The evaporator body is divided into an upper half and a lower half along a cross section through its axis, with the first connecting position located in the upper half and the second connecting position located in the lower half.

4. The evaporator as described in claim 3, characterized in that, The evaporator body also includes a first end cap and a second end cap disposed at opposite ends of the inner cylinder along the axial direction. The inner cylinder, the outer cylinder, the first end cap, and the second end cap together enclose the heat exchange cavity. The outlet pipe and the inlet pipe are both inserted into the heat exchange cavity through the first end cap. The insertion depth of the inlet pipe is different from that of the outlet pipe. The first connecting position is the port of the outlet pipe in the heat exchange cavity, and the second connecting position is the port of the inlet pipe in the heat exchange cavity.

5. The evaporator as described in claim 4, characterized in that, The insertion depth of the inlet pipe is greater than the insertion depth of the outlet pipe.

6. The evaporator as described in claim 5, characterized in that, The inlet pipe is inserted into the heat exchange chamber through an axial section with multiple filling ports on its side, and these ports are spaced apart along the axial direction of the insertion section.

7. The evaporator as claimed in claim 6, characterized in that, The minimum depth of the filling port within the heat exchange chamber is greater than the insertion depth of the outlet pipe.

8. The evaporator as described in claim 3, characterized in that, The first connection point is a refrigerant outlet located in the inner cylinder, and the outlet pipe is connected to the refrigerant outlet. The second connection point is a refrigerant inlet located in the inner cylinder, and the inlet pipe is connected to the refrigerant inlet. The inlet pipe and the outlet pipe extend into the inner side of the inner cylinder from the same end, and the refrigerant inlet and the refrigerant outlet are misaligned along the axial direction of the evaporator body.

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 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 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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