Barrel type evaporator
By using an evaporation chamber composed of an outer and inner barrel wall, the problems of small contact area and high production cost in existing evaporators are solved, achieving efficient heat exchange and low-cost production.
Patent Information
- Application Number
- CN202520262307.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-02-19
AI Technical Summary
Existing evaporators have a small contact area between the evaporator tubes and the shell, resulting in low cooling efficiency and complex and costly manufacturing processes.
The evaporation chamber is composed of an outer barrel wall and an inner barrel wall. The refrigerant expands and vaporizes in the evaporation chamber and absorbs heat from the outer and inner barrel walls, which increases the heat exchange area, simplifies the sealing process, and reduces production costs.
It increases the heat exchange area and cooling efficiency, and reduces the complexity and cost of the production process.
Smart Images
Figure CN223826527U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of refrigeration equipment, and more specifically to a barrel-type evaporator. Background Technology
[0002] Refrigeration equipment such as smoothie machines incorporates a refrigeration circuit consisting of an evaporator, compressor, and condenser. In existing technology, the evaporator comprises a shell and evaporator tubes welded inside the shell. The evaporator tubes are made of metal spiral tubes, with one side of the evaporator tube opposite the inner wall of the shell pressing against it for heat conduction. The two ends of the evaporator tube extend outside the shell for refrigerant to flow in and out. However, the evaporator tubes only have their outer side in contact with the inner wall of the shell for heat conduction, resulting in a small area for external heat exchange. Furthermore, the poor smoothness of the outer wall of the metal spiral tube leads to point contact between the evaporator tube and the inner wall of the shell, further reducing the contact area and thus the heat exchange area, resulting in low cooling efficiency. Moreover, to prevent the refrigerant from contacting the object being cooled, the metal spiral tube must be completely sealed, requiring strict manufacturing processes and resulting in high production costs. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a barrel-type evaporator that can eliminate the evaporation tube made of metal spiral tube, increase the heat exchange area of the evaporator to the outside, and reduce the complexity of the production process and reduce the production cost.
[0004] The technical solution of this utility model is to provide a barrel-type evaporator, including an outer barrel wall, an inner barrel wall, a first end wall, a second end wall, a refrigerant inlet pipe, and a refrigerant outlet pipe. The outer barrel wall surrounds the outer side of the inner barrel wall. The first end wall is sealed to one end of both the outer and inner barrel walls, and the second end wall is sealed to the other end of both the outer and inner barrel walls. An evaporation chamber is formed between the outer and inner barrel walls. At least one refrigerant inlet pipe is connected to one end of the evaporation chamber, and at least one refrigerant outlet pipe is connected to the other end of the evaporation chamber. An axial through hole is provided on the inner side of the inner barrel wall, and a connecting hole is provided on the first end wall and / or the second end wall. The axial through hole is connected to the outside through the connecting hole.
[0005] Compared with existing technologies, the barrel-type evaporator of this invention has the following advantages: The refrigerant can flow into one end of the evaporation chamber through the refrigerant inlet pipe, expand and vaporize within the evaporation chamber, and absorb heat from the outer and inner barrel walls. It then flows back to the compressor through the refrigerant outlet pipe from the other end of the evaporation chamber, thus eliminating the need for a metal spiral tube. The object being cooled can be located on the outside of the outer barrel wall or enter the axial through-hole on the inside of the inner barrel wall, serving as the inner and outer sidewalls of the evaporation chamber. Both the outer and inner barrel walls can contact the object being cooled for heat conduction, thereby increasing the heat exchange area of the evaporator. Furthermore, the contact between the outer and inner barrel walls is surface contact, resulting in a significantly larger heat exchange area than the point contact area of the metal spiral tubes in existing technologies, leading to higher cooling efficiency. Compared to the evaporation tubes constructed from metal spiral tubes in existing technologies, the sealing process of the barrel-type evaporator of this invention is much simpler, requiring only sealing at both ends of the outer and inner barrel walls. This reduces the complexity of the production process and lowers production costs.
[0006] Preferably, one end of the refrigerant inlet pipe is a first inlet, which is connected to the end of the evaporator chamber located on the first end wall; one end of the refrigerant outlet pipe is a third inlet, which is connected to the end of the evaporator chamber located on the second end wall; the first and third inlets are located at opposite ends within the evaporator chamber. This structure is simple and facilitates the refrigerant flowing from the refrigerant inlet pipe into one end of the evaporator chamber, where it expands and vaporizes, absorbing heat from the outer and inner barrel walls, and then flows back to the compressor from the other end of the evaporator chamber through the refrigerant outlet pipe.
[0007] Preferably, the first port is located on the first end wall, and the other end port of the refrigerant inlet pipe is the second port, which is located on the side of the first end wall outside the evaporation chamber; the third port is located on the second end wall, and the other end port of the refrigerant outlet pipe is the fourth port, which is located on the side of the second end wall outside the evaporation chamber. This structure is convenient for products where the refrigerant inlet and outlet ports are located at the two ends of the whole machine.
[0008] Preferably, the refrigerant inlet pipe is located on the first end wall, and the other end of the refrigerant inlet pipe is a second inlet, located on the side of the first end wall outside the evaporation chamber; the refrigerant outlet pipe is located on the first end wall and extends in the direction of the second end wall, and the other end of the refrigerant outlet pipe is a fourth inlet, located on the side of the first end wall outside the evaporation chamber. This structure is convenient for products where both the refrigerant inlet and outlet pipes are located at one end of the unit.
[0009] Preferably, both the refrigerant inlet and outlet pipes are located on the outer barrel wall. This structure facilitates the adaptation of complete products where both ends of the evaporator are limited, and allows for the processing of the object being cooled that is in contact with the inner barrel wall.
[0010] Preferably, both the refrigerant inlet and outlet pipes are located on the inner barrel wall. This structure facilitates the adaptation of complete products where both ends of the evaporator are limited, and allows for the processing of the object being cooled that is in contact with the outer barrel wall.
[0011] Preferably, the refrigerant inlet pipe includes a main inlet pipe and multiple branch inlet pipes communicating with the evaporator chamber. The inlet ports of the branch inlet pipes communicating with the evaporator chamber are designated as first ports. All first ports of the branch inlet pipes are circumferentially distributed at the end of the evaporator chamber located on the first end wall. The other ports of all branch inlet pipes are connected to the main inlet pipe. This structure facilitates the connection between the main inlet pipe and the compressor's exhaust port, while the multiple branch inlet pipes promote uniform diffusion of the refrigerant into the evaporator chamber.
[0012] Preferably, the refrigerant outlet pipe includes a main outlet pipe and multiple branch outlet pipes communicating with the evaporator chamber. The outlet ports of the branch outlet pipes communicating with the evaporator chamber are third ports. All third ports of the branch outlet pipes are circumferentially distributed at the end of the evaporator chamber located on the second end wall. The other ends of all branch outlet pipes are connected to the main outlet pipe. With this structure, the main outlet pipe facilitates connection between the refrigerant outlet pipe and the compressor inlet, and the multiple branch outlet pipes promote uniform refrigerant return within the evaporator chamber.
[0013] Preferably, the third inlets of all the branch pipes are evenly distributed circumferentially at the end of the evaporator cavity where the second end wall is located. This structure further facilitates the uniform refrigerant reflux within the evaporator cavity and prevents refrigerant from accumulating on one side.
[0014] Preferably, the evaporator includes an outer tube, an inner tube, and a first end plate and a second end plate, both of which are annular structures. The outer tube and the inner tube are coaxially sleeved together. The outer and inner annular edges of the first end plate are respectively sealed and welded to one end of the outer tube and the inner tube, respectively. The outer and inner annular edges of the second end plate are respectively sealed and welded to the other end of the outer tube and the inner tube, respectively. An annular cavity is formed between the outer tube and the inner tube. The wall of the outer tube constitutes the outer barrel wall, the wall of the inner tube constitutes the inner barrel wall, the first end plate constitutes the first end wall, the second end plate constitutes the second end wall, and the annular cavity constitutes the evaporation chamber. One end of the evaporation chamber where the first end plate is located is the first annular end, and the other end of the evaporation chamber where the second end plate is located is the second annular end. The refrigerant inlet pipe is connected to the first annular end, and the refrigerant outlet pipe is connected to the second annular end. With this structure, the manufacturing process of the barrel-type evaporator of this invention is further simplified. Only the first end plate and the second end plate need to be sealed and welded to both ends of the outer tube and the inner tube. The production process has low complexity, high production efficiency, and low production cost. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the barrel-type evaporator of this utility model.
[0016] Figure 2 for Figure 1 A sectional view.
[0017] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of the barrel-type evaporator of this utility model.
[0018] Figure 4 This is a schematic diagram of the internal structure of Embodiment 2 of the barrel-type evaporator of this utility model.
[0019] Figure 5 This is a schematic diagram of the structure of Embodiment 3 of the barrel-type evaporator of this utility model.
[0020] Figure 6 This is a schematic diagram of the structure of Embodiment 4 of the barrel-type evaporator of this utility model.
[0021] As shown in the figure: 1. Outer barrel wall, 2. Inner barrel wall, 2-1. Axial through hole, 3. First end wall, 3-1. First connecting hole, 4. Second end wall, 4-1. Second connecting hole, 5. Evaporation chamber, 6. Refrigerant inlet pipe, 6-1. First pipe port, 6-2. Second pipe port, 7. Refrigerant outlet pipe, 7-1. Third pipe port, 7-2. Fourth pipe port, 8. Outlet main pipe. Detailed Implementation
[0022] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of this application and are not intended to limit the scope of this application in any way. Throughout the specification, the same reference numerals refer to the same elements.
[0023] In the accompanying drawings, the thickness, size, and shape of the objects have been slightly exaggerated for illustrative purposes. The drawings are for illustrative purposes only and are not drawn to scale.
[0024] It should also be understood that the terms "comprising," "having," "including," and "containing," when used in this specification, indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof. Furthermore, when expressions such as "...at least one" appear after a list of listed features, they modify the entire listed feature, not individual elements in the list. Example 1
[0025] like Figure 1 and Figure 2As shown, the barrel-type evaporator of this utility model includes an outer barrel wall 1, an inner barrel wall 2, a first end wall 3, a second end wall 4, a refrigerant inlet pipe 6, and a refrigerant outlet pipe 7. The outer barrel wall 1 is sleeved on the outside of the inner barrel wall 2, and the outer barrel wall 1 and the inner barrel wall 2 are spaced apart from each other. The first end wall 3 is sealed and welded to one end of both the outer barrel wall 1 and the inner barrel wall 2, and the second end wall 4 is sealed and welded to the other end of both the outer barrel wall 1 and the inner barrel wall 2. In this way, an externally sealed evaporation chamber 5 is formed between the outer barrel wall 1 and the inner barrel wall 2. The first end wall 3 and the second end wall 4 are located at the two ends of the evaporation chamber 5, respectively. An axial through hole 2-1 is provided on the inner side of the inner barrel wall 2. A connecting hole is provided on both the first end wall 3 and the second end wall 4. A first connecting hole 3-1 is provided in the middle of the first end wall 3, and a second connecting hole 4-1 is provided in the middle of the second end wall 4. Both the first connecting hole 3-1 and the second connecting hole 4-1 can connect the axial through hole 2-1 to the outside.
[0026] One end of the refrigerant inlet pipe 6 is the first inlet 6-1, which is connected to the end of the evaporator cavity 5 located on the first end wall 3. The first inlet 6-1 is sealed and welded to the first end wall 3. The other end of the refrigerant inlet pipe 6 is the second inlet 6-2, which is located on the side of the first end wall 3 outside the evaporator cavity 5.
[0027] One end of the refrigerant outlet pipe 7 is the third outlet 7-1, which is connected to the end of the evaporator chamber 5 located on the second end wall 4. The third outlet 7-1 is sealed and welded to the second end wall 4. The other end of the refrigerant outlet pipe 7 is the fourth outlet 7-2, which is located on the side of the second end wall 4 outside the evaporator chamber 5.
[0028] The first port 6-1 and the third port 7-1 are located at the two ends of the evaporation chamber 5, respectively. The refrigerant can flow into one end of the evaporation chamber 5 from the refrigerant inlet pipe 6, expand and vaporize in the evaporation chamber 5 and absorb heat from the outer barrel wall 1 and the inner barrel wall 2, and then flow back to the compressor from the other end of the evaporation chamber 5 through the refrigerant outlet pipe 7.
[0029] The object to be cooled can be located on the outside of the outer barrel wall or enter the axial through hole 2-1 on the inside of the inner barrel wall 2. The outer barrel wall 1 and the inner barrel wall 2 serve as the inner and outer side walls of the evaporation chamber 5, and can both contact the object to be cooled for heat conduction. Moreover, the surface contact area for external heat exchange is much larger than the surface contact area of the metal spiral tube in the prior art, resulting in high cooling efficiency. Example 2
[0030] The difference between the barrel-type evaporator in this embodiment and that in Embodiment 1 is that the refrigerant outlet pipe 7 includes a main outlet pipe 8 and two branch outlet pipes communicating with the evaporation chamber 5, such as... Figure 3 and Figure 4As shown, the outlet branch pipes connected to the evaporator cavity 5 are all third outlets 7-1, and the other end outlets of the outlet branch pipes are all fourth outlets 7-2. The outlet branch pipes are all located on the first end wall 3 and extend towards the second end wall 4. The two third outlets 7-1 are still connected to the end of the evaporator cavity 5 located on the second end wall 4, and the two third outlets 7-1 are evenly distributed circumferentially on the end of the evaporator cavity 5 located on the second end wall 4, which is conducive to the uniform return of refrigerant in the evaporator cavity and avoids the refrigerant from accumulating on one side. The two fourth outlets 7-2 are located on the side of the first end wall 3 outside the evaporator cavity 5 and are both connected to the outlet main pipe, which facilitates connection with the compressor inlet.
[0031] Both the refrigerant inlet pipe 6 and the refrigerant outlet pipe 7 are located on one side of the first end wall 3 and connect to the compressor, making it convenient to adapt to products where the refrigerant inlet and outlet pipes are located at one end of the entire unit. In addition, when further agitators are installed on the inner surface of the inner barrel wall 2 and the outer surface of the outer barrel wall 1, the refrigerant inlet pipe 6 and the refrigerant outlet pipe 7 will not interfere with the agitators. Example 3
[0032] When the entire product needs to limit both ends of the evaporator, the refrigerant inlet pipe 6 and the refrigerant outlet pipe 7 are not suitable to be set on the first end wall 3 or the second end wall 4.
[0033] The difference between the barrel-type evaporator in this embodiment and that in Embodiment 1 is that both the refrigerant inlet pipe 6 and the refrigerant outlet pipe 7 are located on the outer barrel wall 1, such as... Figure 5 As shown, this design is suitable for complete products where both ends of the evaporator are limited, and for small cup-shaped complete products. A machining tool can be installed inside the inner barrel wall 2 to process the object being cooled that is in contact with the inner barrel wall 2. Example 4
[0034] The difference between the barrel-type evaporator in this embodiment and that in embodiment 3 is that both the refrigerant inlet pipe 6 and the refrigerant outlet pipe 7 are located on the inner barrel wall 2, such as... Figure 6 As shown, the same easy-to-adapt whole product with both ends of the evaporator being limited can also be equipped with a machining tool on the outside of the outer barrel wall 1 to process the object being cooled that is in contact with the outer barrel wall 1. Example 5
[0035] The barrel-type evaporator in this embodiment simplifies the manufacturing process compared to the above embodiments. It includes an outer tube, an inner tube, and a first end plate and a second end plate, both of which are annular structures. The outer barrel wall 1 is formed by the wall of the outer tube, the inner barrel wall 2 is formed by the wall of the inner tube, the first end plate forms the first end wall 3, and the second end plate forms the second end wall 4. The outer tube and the inner tube are coaxially sleeved together. The outer and inner ring edges of the first end plate are respectively sealed and welded to one end of the outer tube and the inner tube, respectively. The outer and inner ring edges of the second end plate are respectively sealed and welded to the other end of the outer tube and the inner tube, respectively. An annular cavity is formed between the outer tube and the inner tube. The annular cavity forms the evaporation chamber 5. One end of the evaporation chamber 5 where the first end plate is located is the first annular end, and the other end of the evaporation chamber 5 where the second end plate is located is the second annular end. The refrigerant inlet pipe 6 is connected to the first annular end, and the refrigerant outlet pipe 7 is connected to the second annular end.
[0036] The above are merely specific embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Any modifications or equivalent substitutions to this utility model without departing from its spirit and scope should be covered within the protection scope of the claims of this utility model.
Claims
1. A barrel-type evaporator, characterized in that, The device includes an outer barrel wall (1), an inner barrel wall (2), a first end wall (3), a second end wall (4), a refrigerant inlet pipe (6), and a refrigerant outlet pipe (7). The outer barrel wall (1) surrounds the outer side of the inner barrel wall (2). The first end wall (3) is sealed to one end of both the outer barrel wall (1) and the inner barrel wall (2). The second end wall (4) is sealed to the other end of both the outer barrel wall (1) and the inner barrel wall (2). An evaporation chamber (5) is formed between the outer barrel wall (1) and the inner barrel wall (2). At least one refrigerant inlet pipe (6) is connected to one end of the evaporation chamber (5), and at least one refrigerant outlet pipe (7) is connected to the other end of the evaporation chamber (5). An axial through hole (2-1) is provided on the inner side of the inner barrel wall (2). A connecting hole is provided on the first end wall (3) and / or the second end wall (4). The axial through hole (2-1) is connected to the outside through the connecting hole.
2. The barrel-type evaporator according to claim 1, characterized in that, One end of the refrigerant inlet pipe (6) is the first inlet (6-1), which is connected to the end of the evaporator (5) located on the first end wall (3); one end of the refrigerant outlet pipe (7) is the third inlet (7-1), which is connected to the end of the evaporator (5) located on the second end wall (4); the first inlet (6-1) and the third inlet (7-1) are located at opposite ends of the evaporator (5).
3. The barrel-type evaporator according to claim 2, characterized in that, The first port (6-1) is located on the first end wall (3), and the other end port of the refrigerant inlet pipe (6) is the second port (6-2). The second port (6-2) is located on the side of the first end wall (3) outside the evaporation chamber (5). The third port (7-1) is located on the second end wall (4), and the other end port of the refrigerant outlet pipe (7) is the fourth port (7-2). The fourth port (7-2) is located on the side of the second end wall (4) outside the evaporation chamber (5).
4. The barrel-type evaporator according to claim 2, characterized in that, The refrigerant inlet pipe (6) is located on the first end wall (3), and the other end of the refrigerant inlet pipe (6) is the second pipe port (6-2). The second pipe port (6-2) is located on the side of the first end wall (3) outside the evaporation chamber (5). The refrigerant outlet pipe (7) is located on the first end wall (3) and extends in the direction of the second end wall (4). The other end of the refrigerant outlet pipe (7) is the fourth pipe port (7-2). The fourth pipe port (7-2) is located on the side of the first end wall (3) outside the evaporation chamber (5).
5. The barrel-type evaporator according to claim 2, characterized in that, The refrigerant inlet pipe (6) and refrigerant outlet pipe (7) are both located on the outer barrel wall (1).
6. The barrel-type evaporator according to claim 2, characterized in that, The refrigerant inlet pipe (6) and refrigerant outlet pipe (7) are both located on the inner barrel wall (2).
7. The barrel-type evaporator according to claim 2, characterized in that, The refrigerant inlet pipe (6) includes a main inlet pipe and multiple inlet branch pipes that communicate with the evaporator cavity (5). The inlet branch pipes that communicate with the evaporator cavity (5) are the first inlet ports (6-1). The first inlet ports (6-1) of all inlet branch pipes are circumferentially distributed at one end of the evaporator cavity (5) where the first end wall (3) is located. The other end ports of all inlet branch pipes are connected to the main inlet pipe.
8. The barrel-type evaporator according to claim 2, characterized in that, The refrigerant outlet pipe (7) includes a main outlet pipe and multiple outlet branch pipes that communicate with the evaporation chamber (5). The outlet branch pipes that communicate with the evaporation chamber (5) are third outlets (7-1). The third outlets (7-1) of all outlet branch pipes are circumferentially distributed at one end of the evaporation chamber (5) where the second end wall (4) is located. The other end of all outlet branch pipes is connected to the main outlet pipe.
9. The barrel-type evaporator according to claim 1, characterized in that, The device includes an outer tube, an inner tube, and a first end plate and a second end plate, both of which are annular structures. The outer tube and the inner tube are coaxially connected. The outer and inner annular edges of the first end plate are respectively sealed and welded to one end of the outer tube and the inner tube. The outer and inner annular edges of the second end plate are respectively sealed and welded to the other end of the outer tube and the inner tube. An annular cavity is formed between the outer tube and the inner tube. The wall of the outer tube forms the outer barrel wall (1), the wall of the inner tube forms the inner barrel wall (2), the first end plate forms the first end wall (3), the second end plate forms the second end wall (4), and the annular cavity forms the evaporation chamber (5). One end of the evaporation chamber (5) where the first end plate is located is the first annular end, and the other end of the evaporation chamber (5) where the second end plate is located is the second annular end. The refrigerant inlet pipe (6) is connected to the first annular end, and the refrigerant outlet pipe (7) is connected to the second annular end.