Evaporator for smoothie machine and smoothie machine

Abstract

The utility model discloses an evaporator for a smoothie machine and the smoothie machine. The evaporator comprises a cylindrical evaporator, the evaporator comprises an outer cylinder and an inner cylinder, an evaporation cavity is formed between the inner wall of the outer cylinder and the outer wall of the inner cylinder, and the evaporator is provided with a first through hole which can be communicated with the evaporation cavity and allows a refrigerant to enter and a second through hole which allows the refrigerant to be discharged. The evaporation cavity structure replaces a traditional copper coil pipe, the cost is reduced, refrigerant fluid directly exchanges heat in the evaporation cavity, the refrigerant flow is shortened, the flow resistance is reduced, and compared with the traditional coil pipe structure, the contact area is larger, contact is more sufficient, and the heat exchange efficiency is higher.

Description

Technical Field

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

[0002] In smoothie makers and frozen beverage preparation equipment, the evaporator is the core component for achieving the refrigeration function, and its performance directly affects the equipment's refrigeration efficiency, energy consumption, and manufacturing cost. Traditional smoothie makers generally use copper coil-type evaporators, whose typical structure involves spirally winding copper tubes around the inner wall of the refrigeration chamber or the surface of an independent refrigeration substrate. As the refrigerant flows within the copper tubes, it exchanges heat with the external materials through the tube walls to achieve cooling.

[0003] However, this type of traditional structure has the following drawbacks:

[0004] 1. High manufacturing cost: Copper is an expensive metal material with high thermal conductivity, and the coil structure requires complex bending and welding processes, resulting in high processing costs and low material utilization.

[0005] 2. Limited heat exchange efficiency: The contact area between the coil and the inner wall of the cavity or the material is limited, and the refrigerant flow path is long and the flow resistance is large due to the constraint of the pipe diameter. This not only results in low refrigeration efficiency, but also poor refrigeration uniformity.

[0006] 3. Structural reliability issues: Repeated thermal expansion and contraction can easily cause fatigue cracking of weld points, resulting in a higher risk of refrigerant leakage and increased maintenance costs.

[0007] Therefore, there is an urgent need for a new type of evaporator structure that is low in cost and high in heat exchange efficiency. Utility Model Content

[0008] Therefore, the purpose of this utility model is to provide an evaporator and a smoothie maker for use in a smoothie maker, which has the characteristics of simple structure and high refrigeration efficiency.

[0009] The technical solution adopted by this utility model to solve its technical problem is:

[0010] An evaporator for a smoothie machine includes a cylindrical evaporator; the evaporator includes an outer cylinder and an inner cylinder, a closed evaporation chamber is formed between the inner wall of the outer cylinder and the outer wall of the inner cylinder, and the evaporator has a first through hole for refrigerant to enter and a second through hole for refrigerant to exit, which communicate with the evaporation chamber.

[0011] The evaporation chamber is provided with a partition, which divides the evaporation chamber into at least two evaporation sub-chambers. The partition is provided with a flow hole for connecting two adjacent evaporation sub-chambers.

[0012] The first through hole and the second through hole are respectively connected to different evaporation chambers.

[0013] Both the first through hole and the second through hole are located at the rear end of the evaporation chamber, and the flow hole is located at the front end of the evaporation chamber.

[0014] The rear end of the evaporation chamber has a circular stepped surface. The first through hole and the second through hole are located on the stepped surface. The line connecting the center of the first through hole to the center o of the stepped surface and the line connecting the center of the second through hole to the center o of the stepped surface form an angle α, wherein 90°≤α≤270°.

[0015] Preferably, α = 180°.

[0016] The partition divides the evaporation chamber into at least two sub-evaporation chambers.

[0017] The outer wall surface of the outer cylinder is machined with an annular groove.

[0018] A smoothie machine includes a body and a cylinder mounted on the body. An evaporator is mounted in the cylinder. A scraper assembly is provided on the outside of the evaporator. The scraper assembly includes a drive hole at the front end and a scraper blade extending spirally around the axis of the evaporator.

[0019] The inner wall of the inner cylinder forms an installation cavity with a rear end opening on one side. The front end of the evaporator is provided with a bearing hole that communicates with the installation cavity. A drive shaft that can connect and cooperate with the drive hole is installed in the bearing hole. The drive shaft passes through the installation cavity and is connected to a motor installed at the rear end of the evaporator.

[0020] A bearing is installed in the bearing hole, and a silicone pad is installed at the front end of the bearing. The front end of the silicone pad abuts against the front surface of the evaporator, and the rear end of the silicone pad is installed in the bearing hole. A silicone ring and a sealing ring are also provided between the silicone pad and the drive shaft.

[0021] The beneficial effects of this utility model are:

[0022] 1. Reduce manufacturing costs: The evaporation chamber structure formed by the outer and inner cylinders replaces the traditional copper coil, reducing the amount of high-cost copper materials and complex bending and welding processes. The evaporation chamber has a high material utilization rate, the process is simplified, and the overall manufacturing cost is reduced.

[0023] 2. Improved Refrigeration Efficiency: The refrigerant directly exchanges heat within the evaporation chamber, shortening the refrigerant flow path and reducing flow resistance. Compared to traditional coil structures, this results in a larger and more thorough contact area. The material inside the cylinder is separated from the refrigerant only by the outer wall of the outer cylinder, leading to higher heat exchange efficiency. A baffle divides the evaporation chamber into multiple sub-cavities, and the first through-hole of the refrigerant inlet and the second through-hole of the outlet are spaced at a certain angle (α = 90°–270°, preferably 180°), ensuring sufficient refrigerant circulation within the chamber, improving temperature uniformity, and avoiding localized temperature gradients. The outer wall surface of the outer cylinder is machined with annular grooves, increasing the contact area with the material inside the cylinder and further improving refrigeration efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a partial explosion of a smoothie machine.

[0025] Figure 2 This is a schematic diagram of the evaporator and scraper assembly;

[0026] Figure 3 This is a three-dimensional cross-sectional view of the evaporator;

[0027] Figure 4 This is a structural schematic diagram from the rear end of the evaporator;

[0028] Figure 5 It is a cross-sectional view along the axial direction of the evaporator;

[0029] Figure 6 It is a cross-sectional view along the radial direction AA of the evaporator.

[0030] Figure 7 A cross-sectional view along the radial direction of the evaporator in one embodiment.

[0031] Figure 8 This is a cross-sectional view after the evaporator and scraper assembly are installed. Detailed Implementation

[0032] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0033] Reference Figure 1 , Figure 3 and Figure 4An evaporator for a smoothie machine includes a cylindrical evaporator 3; the evaporator 3 includes an outer cylinder 31 and an inner cylinder 32, a closed evaporation chamber 30 is formed between the inner wall of the outer cylinder 31 and the outer wall of the inner cylinder 32, and the evaporator 3 is provided with a first through hole 34 for refrigerant to enter and a second through hole 35 for refrigerant to exit, which can communicate with the evaporation chamber 30.

[0034] Specifically, the evaporation chamber structure formed by the outer cylinder 31 and the inner cylinder 32 replaces the traditional copper coil, reducing the amount of high-cost copper material used and the complex bending and welding process. The evaporation chamber 3 has a high material utilization rate, simplified process, and reduced overall manufacturing cost.

[0035] Reference Figure 3 , Figure 6 The evaporation chamber 30 is provided with a partition 36, which divides the evaporation chamber 30 into at least two evaporation sub-chambers 300. The partition 36 is provided with a flow hole 360 ​​for connecting two adjacent evaporation sub-chambers 300.

[0036] Preferably, the first through hole 34 and the second through hole 35 are respectively connected to different evaporation chambers 300.

[0037] Reference Figure 3 , Figure 6 The rear end of the evaporation chamber 30 is formed with an annular stepped surface 320. The first through hole 34 and the second through hole 35 are provided on the stepped surface 320. The line connecting the center of the first through hole 34 to the center o of the stepped surface 320 and the line connecting the center of the second through hole 35 to the center o of the stepped surface 320 form an angle α, where 90°≤α≤270°.

[0038] Reference Figure 7 Preferably, α = 180°, that is, the first through hole 34 and the second through hole 35 are respectively provided on both sides of the center of the stepped surface 320, and are located on the diameter passing through the center.

[0039] Specifically, the refrigerant directly exchanges heat within the evaporation chamber 30, shortening the refrigerant flow path and reducing flow resistance. Compared to the traditional coil structure, the contact area is larger and the contact is more thorough. The material in the cylinder 2 is separated from the refrigerant only by the outer wall of the outer cylinder 31, resulting in higher heat exchange efficiency. The baffle 36 divides the evaporation chamber 30 into multiple evaporation sub-chambers 300, and the first through hole 34 of the refrigerant inlet and the second through hole 35 of the outlet are arranged at a certain angle, ensuring that the refrigerant circulates fully within the chamber, improving temperature uniformity, and avoiding local temperature gradients.

[0040] The partition 36 divides the evaporation chamber 30 into at least two sub-evaporation chambers 300.

[0041] Preferably, the first through hole 34 and the second through hole 35 are both located at the rear end of the evaporation chamber 30, and the flow hole 360 ​​is located at the front end of the evaporation chamber 30.

[0042] Reference Figure 7 In one embodiment, the evaporator sub-cavity 300 is equally divided into left and right sections by two partitions 36. A first through-hole 34 and a second through-hole 35 are respectively provided on the two evaporator sub-cavities 300. The diameter line connecting the upper and lower partitions 36 is perpendicular to the diameter line connecting the left and right first through-holes 34 and second through-holes 35. The first through-hole 34 and second through-hole 35 are located at the rear end of the evaporator 30, and the flow hole 360 ​​of the partition 36 is located at the front end of the evaporator 30. The refrigerant forms an axial flow within the evaporator 30 through the first through-hole 34, the flow hole 360, and the second through-hole 35, as well as radial flow between the evaporator sub-cavities 300, ensuring sufficient circulation of the refrigerant within the cavity, improving temperature uniformity, and increasing refrigeration efficiency.

[0043] refer to Figure 2 The outer wall surface of the outer cylinder 31 is machined with an annular groove 310. Specifically, the design of the annular groove 310 increases the contact area between the outer wall surface of the outer cylinder 31 and the material inside the cylinder 2, making the heat exchange of the refrigerant in the evaporation chamber 30 more complete and further improving the refrigeration efficiency. In addition, the annular groove 310 can also increase the adhesion of the outer wall surface of the outer cylinder 31, resulting in a better ice slush formation effect.

[0044] Preferably, the evaporator 3 is made of stainless steel 304 or stainless steel 304, the wall thickness of the outer cylinder 31 is 0.6mm-3mm, and the annular groove 310 is a threaded groove with a depth of 0.3mm-1.2mm.

[0045] Specifically, refrigerant is injected into the evaporator chamber 30, and the gas pressure inside the chamber ranges from 0.85 MPa to 5 MPa.

[0046] Reference Figure 1 , Figure 8 A smoothie machine includes a body 1, a cylinder 2 mounted on the body 1, an evaporator 3 mounted inside the cylinder 2, and a scraper assembly 4 mounted on the outside of the evaporator 3. The scraper assembly 4 includes a drive hole 40 at the front end and a scraper blade 41 extending spirally around the axis of the evaporator 3.

[0047] An installation cavity 33 with a rear end opening is formed on one side of the inner wall of the inner cylinder 32. A bearing hole 37 that communicates with the installation cavity 33 is provided at the front end of the evaporator 3. A drive shaft 7 that can be connected and cooperated with the drive hole 40 is installed in the bearing hole 37. The drive shaft 7 passes through the installation cavity 33 and is connected to the motor 5 installed at the rear end of the evaporator 3.

[0048] Specifically, the rotation axis of the scraper assembly 4 coincides with the axis of the evaporator 3. When the scraper assembly 4 rotates, the scraper blade 41 spirals and rubs against the outer wall of the evaporator 3 in real time to produce slush. The drive shaft 7 passes through the mounting cavity 33 and is connected to the motor 5 installed at the rear end of the evaporator 3, so that the motor 5 is relatively far away from the evaporator 3, preventing the heat generated by the motor 5 from affecting the cooling efficiency of the evaporation cavity 30.

[0049] A bearing 370 is installed inside the bearing hole 37. A silicone gasket 90 is installed at the front end of the bearing 370, with the front end of the silicone gasket 90 abutting against the front surface of the evaporator 3, and the rear end of the silicone gasket 90 installed inside the bearing hole 37. A silicone ring 91 and a sealing ring 92 are also provided between the silicone gasket 90 and the drive shaft 7. Specifically, the silicone gasket 90, silicone ring 91, and sealing ring 92 form a multi-layered protective sealing assembly, ensuring the normal rotation of the scraper assembly 4 driven by the drive shaft 7 inside the bearing hole 37 while preventing the penetration of materials into the cylinder 2.

[0050] refer to Figure 2 , Figure 8 Furthermore, the rear end of the evaporator 3 is provided with a mounting end face 311 for fixing the evaporator 3 to the body 1, and a screw hole 3110 is formed on the mounting end face 311; preferably, a support plate 6 is also installed between the body 1 and the mounting end face 311, which allows for modular and quick assembly, making installation more convenient and easier for later maintenance. Furthermore, the rear end of the scraper assembly 4 is also provided with a sealing ring 42 sleeved on the front side of the mounting end face 311, which isolates the mounting end face 311 from the material inside the cylinder 2 and reduces corrosion.

[0051] Reference Figure 2 , Figure 8 Furthermore, a temperature sensor 8 is provided on the front surface of the evaporator 3. The temperature sensor 8 directly monitors the material temperature inside the cylinder 2 to achieve precise temperature control and avoid overcooling and frosting.

[0052] In summary, this evaporator 3 solves the problems of high manufacturing cost, complex structure, and low refrigeration efficiency of smoothie machines that use traditional coil evaporators, achieving technical effects such as improved refrigeration efficiency, reduced energy consumption, and extended lifespan, and has significant market value.

Claims

1. An evaporator for a smoothie machine, characterized in that, The evaporator (3) includes a cylindrical evaporator (3), which includes an outer cylinder (31) and an inner cylinder (32). A closed evaporation chamber (30) is formed between the inner wall of the outer cylinder (31) and the outer wall of the inner cylinder (32). The evaporator (3) has a first through hole (34) for refrigerant to enter the evaporation chamber (30) and a second through hole (35) for refrigerant to exit.

2. An evaporator for a smoothie machine according to claim 1, characterized in that, The evaporation chamber (30) is provided with a partition (36), which divides the evaporation chamber (30) into at least two evaporation sub-chambers (300). The partition (36) is provided with a flow hole (360) for connecting two adjacent evaporation sub-chambers (300).

3. An evaporator for a smoothie machine according to claim 2, characterized in that, The first through hole (34) and the second through hole (35) are respectively connected to different evaporation chambers (300).

4. An evaporator for a smoothie machine according to claim 2, characterized in that, The first through hole (34) and the second through hole (35) are both located at the rear end of the evaporation chamber (30), and the flow hole (360) is located at the front end of the evaporation chamber (30).

5. An evaporator for a smoothie machine according to claim 2, characterized in that, The evaporation chamber (30) has an annular stepped surface (320) at its rear end. The first through hole (34) and the second through hole (35) are located on the stepped surface (320). The line connecting the center of the first through hole (34) to the center o of the stepped surface (320) and the line connecting the center of the second through hole (35) to the center o of the stepped surface (320) form an angle α, wherein 90°≤α≤270°.

6. An evaporator for a smoothie machine according to claim 4, characterized in that, The value of α is 180°.

7. An evaporator for a smoothie machine according to claim 2, characterized in that, The partition (36) equally divides the evaporation chamber (30) into at least two evaporation sub-chambers (300).

8. An evaporator for a smoothie machine according to claim 1, characterized in that, The outer wall surface of the outer cylinder (31) is machined with an annular groove (310).

9. A smoothie maker, comprising an evaporator for a smoothie maker according to any one of claims 1-8, characterized in that, Includes a body (1) and a cylinder (2) mounted on the body (1). The evaporator (3) is mounted inside the cylinder (2). A scraper assembly (4) is mounted on the outside of the evaporator (3). The scraper assembly (4) includes a transmission hole (40) at the front end and a scraper blade (41) extending spirally around the axis of the evaporator (3). The inner wall of the inner cylinder (32) forms an installation cavity (33) with a rear end opening on one side. The front end of the evaporator (3) is provided with a bearing hole (37) that communicates with the installation cavity (33). A transmission shaft (7) that can be connected and cooperated with the transmission hole (40) is installed in the bearing hole (37). The transmission shaft (7) passes through the installation cavity (33) and is connected to the motor (5) installed at the rear end of the evaporator (3).

10. A smoothie machine according to claim 9, characterized in that, A bearing (370) is installed in the bearing hole (37). A silicone pad (90) is installed at the front end of the bearing (370). The front end of the silicone pad (90) abuts against the front surface of the evaporator (3). The rear end of the silicone pad (90) is installed in the bearing hole (37). A silicone ring (91) and a sealing ring (92) are also provided between the silicone pad (90) and the drive shaft (7).

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