High-efficiency energy-saving finned evaporator

Abstract

This invention relates to the field of heat exchange technology and discloses a high-efficiency and energy-saving finned evaporator, comprising a cylindrical body with an internal heat exchange structure. The heat exchange structure includes multiple vertically arrayed heat exchange tubes, each with several fins passing through its outer side. The heat exchange tubes are annular, thus arranging the fins into a ring structure. The heat exchange tubes are connected end-to-end to form a flow channel. An annular gap exists between the inner wall of the cylindrical body and the annular structure formed by the fins. By arranging the fins in an annular pattern, adjacent fins form a V-shape. This results in a larger gap near the annular gap than near the cylindrical cavity, increasing the gap on the air inlet side. With the same number and size of fins as in existing technologies, the larger gap between adjacent fins on the air inlet side reduces wind resistance at the air inlet, thus lowering energy consumption during fan operation and achieving high-efficiency heat exchange and energy saving.

Description

Technical Field

[0001] This invention relates to the field of heat exchange, and more specifically, to a highly efficient and energy-saving finned evaporator. Background Technology

[0002] Finned evaporators are core heat exchange components in air-cooled refrigeration, heat pump air conditioning, commercial cold chain, and industrial temperature control equipment. They are used in various heat exchange equipment such as household air conditioners, cold chain freezers, and industrial refrigeration units. Their heat exchange efficiency, air resistance performance, and energy consumption level directly determine the energy efficiency level, operational stability, and operating cost of the entire refrigeration equipment. They are the core key component for energy-saving optimization of refrigeration systems.

[0003] Currently, most mainstream finned evaporators on the market adopt a conventional composite structure of copper tubes and aluminum fins. Among them, the straight-finned evaporator is the most basic and widely used structural type. The straight-finned evaporator is composed of heat exchange copper tubes and straight metal fins. The fins are arranged in a neat array on the outside of the heat exchange copper tubes, tightly fitting together to form an integral heat exchange core. During refrigeration system operation, low-temperature, low-pressure liquid refrigerant flows inside the heat exchange copper tubes and undergoes phase change evaporation, absorbing heat from the tube walls. External air, driven by a fan, sweeps across the fin surface, transferring heat to the fins and copper tubes through heat conduction and convection. This heat is then absorbed by the refrigerant inside the tubes and carried out of the heat exchange area, thus achieving air cooling and environmental refrigeration.

[0004] The straight fins have an equidistant, densely arranged structure. After fin formation, the ventilation gaps between adjacent fins are narrow, and the channels are regular and long. In particular, the inlet flow cross-section on the windward side of the fins is relatively small, which is the core reason for the high wind-side resistance and energy consumption of the evaporator. When air flows towards the windward side of the evaporator driven by the fan, the sudden entry of the large external airflow into the narrow, small-aperture channel of the fins creates a significant inlet constriction effect. The airflow is instantly compressed and converged, generating significant local inlet resistance and eddy current losses, directly causing a sharp increase in windward resistance. To overcome the excessive duct resistance and compensate for the lack of airflow to ensure basic cooling effect, the fan must increase its speed and output power to operate continuously, directly causing a significant increase in fan operating energy consumption and a continuous decrease in the overall energy efficiency ratio, failing to meet the requirements for energy saving and consumption reduction. Summary of the Invention

[0005] This invention provides a highly efficient and energy-saving finned evaporator, solving the technical problem in related technologies where a sudden influx of airflow from a large external space into the narrow, small-aperture channel of the fins causes a sharp increase in wind resistance on the windward side, resulting in a significant increase in the energy consumption of the fan.

[0006] This invention provides a high-efficiency and energy-saving finned evaporator, comprising a cylindrical body, the interior of which is provided with a heat exchange structure, the heat exchange structure including multiple heat exchange tubes arranged in a vertical array, the outer sides of which are provided with several fins, the heat exchange tubes being annular, thus the several fins being arranged in an annular structure, the several heat exchange tubes being connected end to end to form a flow channel; there is an annular gap between the inner wall of the cylindrical body and the annular structure formed by the several fins, and the middle part of the annular structure is a cylindrical cavity, the cylindrical body is provided with an air inlet pipe and an air outlet pipe, the air inlet pipe communicating with the annular gap, and the air outlet pipe communicating with the cylindrical cavity.

[0007] In a preferred embodiment, the heat exchange structure further includes a support plate one and a support plate two. The support plate one and the support plate two are respectively disposed on both sides of the heat exchange tube and fixed to a plurality of heat exchange tubes. The heat exchange structure is supported in the cylinder by the support plate one and the support plate two, and the plurality of heat exchange tubes are connected end to end at the position of the support plate one.

[0008] In a preferred embodiment, a conical guide plate is installed on the top of the heat exchange structure, the air outlet pipe is fixed to the upper end of the conical guide plate, a guide sleeve is fixedly sleeved on the outer side of the air outlet pipe, the air inlet pipe is fixed and connected to the side wall of the guide sleeve, and the lower end of the guide sleeve leads to the outer conical surface of the conical guide plate, through which the gas is introduced into the annular gap.

[0009] In a preferred embodiment, the finned evaporator further includes a cleaning assembly comprising a plurality of nozzles arranged in a ring on the inner wall of the cylinder and connected to the inner wall of the cylinder via ball joints. One end of each nozzle is connected to a rigid tube extending to the outer side of the cylinder.

[0010] In a preferred embodiment, a drive ring is rotatably sleeved on the outer wall of the cylinder, and a plurality of through holes are opened on the drive ring. A rigid tube extends out from the through holes. A motor is fixedly installed on the outer wall of the cylinder, and a drive wheel is installed at the output end of the motor. The drive wheel presses against the annular surface of one end of the drive ring.

[0011] In a preferred embodiment, a base is installed at the bottom of the cylinder, and a fixing column one and a fixing column two are fixedly installed on both sides of the base, respectively. Support plate one and support plate two are supported on the fixing column one and the fixing column two, respectively.

[0012] In a preferred embodiment, a bottom plate is provided at the bottom of the inner side of the cylinder, and a sliding groove 1 and a sliding groove 2 are respectively opened on both sides of the bottom plate. A fixed column 1 is slidably disposed in the sliding groove 1, and a fixed column 2 is slidably disposed in the sliding groove 2. An electric push rod is installed on the base, and the electric push rod is used to drive the bottom plate to move vertically.

[0013] In a preferred embodiment, a drainage assembly is provided on the inner side of the base. The drainage assembly includes a drain pipe, one end of which extends to the outer side of the base, and the other end of which has an inner cavity. A movable pipe is connected to the middle of the base plate, and a side opening is provided on the side wall of the movable pipe. The side opening fits against the inner side wall of the upper end of the drain pipe.

[0014] In a preferred embodiment, an inner ring is rotatably connected to the bottom of the inner side of the cylinder, and several blades are installed on the inner wall of the inner ring. A second motor is installed on the outer side of the cylinder, and a second drive wheel is installed at the output end of the second motor. The second drive wheel presses against the annular surface at the upper end of the inner ring.

[0015] In a preferred embodiment, one end of the blade is hinged to the inner ring via a torsion spring. Under normal conditions, the blade is attached to the inner wall of the inner ring. The other end of the inner ring and the side closest to the inner wall of the inner ring have an oblique opening. A gasket is installed between the blade and the inner wall of the inner ring.

[0016] The beneficial effects of this invention are as follows: By arranging the fins in a ring shape, the adjacent fins form a V-shape. This results in a larger gap on the air inlet side compared to the gap on the end of the fins near the annular gap. When the number and size of the fins are the same as in the prior art, the larger gap between adjacent fins on the air inlet side reduces the wind resistance on the windward side, thereby reducing the energy consumption of the fan during operation and achieving efficient heat exchange and energy saving. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a cross-sectional view of the present invention.

[0019] Figure 3 This is a schematic diagram of the heat exchange structure of the present invention.

[0020] Figure 4 This is a schematic diagram of the mounting of the base plate of the present invention.

[0021] Figure 5 This is the present invention. Figure 2 Enlarged view of the local structure at point A in the middle.

[0022] Figure 6 This is a schematic diagram of the internal structure of the present invention.

[0023] Figure 7 This is a schematic diagram of the cleaning component of the present invention.

[0024] Figure 8 This is a partial structural schematic diagram of the present invention.

[0025] Figure 9 This is the present invention. Figure 8 Exploded view of the structure.

[0026] Figure 10 This is a schematic diagram of the inner ring structure of the present invention.

[0027] In the diagram: 1. Cylinder; 10. Annular gap; 101. Cylindrical cavity; 11. Inlet pipe; 12. Outlet pipe; 13. Base; 131. Fixed column one; 132. Fixed column two; 14. Base plate; 141. Slide groove one; 142. Slide groove two; 2. Heat exchange structure; 21. Heat exchange tube; 22. Fin; 23. Support plate one; 24. Support plate two; 3. Conical guide plate; 31. Air guide sleeve; 4. Cleaning assembly; 41. Nozzle; 411. Rigid pipe; 42. Drive ring; 421. Through hole; 43. Motor one; 431. Drive wheel one; 5. Drainage assembly; 51. Drain pipe; 52. Inner cavity; 53. Movable pipe; 54. Side opening; 6. Inner ring; 61. Blade; 611. Slanted opening; 62. Motor two; 63. Drive wheel two; 7. Electric push rod. Detailed Implementation

[0028] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0029] Example 1

[0030] like Figures 1-3 As shown, a high-efficiency and energy-saving finned evaporator includes a cylindrical body 1. A heat exchange structure 2 is arranged inside the cylindrical body 1. The heat exchange structure 2 includes multiple vertically arrayed heat exchange tubes 21. Several fins 22 are commonly passed through the outer sides of the multiple heat exchange tubes 21. The heat exchange tubes 21 are annular, thus arranging the several fins 22 into an annular structure. The several heat exchange tubes 21 are connected end-to-end to form a flow channel. An annular gap 10 exists between the inner wall of the cylindrical body 1 and the annular structure formed by the arrangement of the several fins 22. The middle part of the annular structure is a cylindrical cavity 101. An air inlet pipe 11 and an air outlet pipe 12 are provided on the cylindrical body 1. The air inlet pipe 11 communicates with the annular gap 10, and the air outlet pipe 12 communicates with the cylindrical cavity 101.

[0031] In this embodiment, the specific implementation method is as follows: When the evaporator is working, the low-temperature, low-pressure liquid refrigerant flows inside the heat exchange tube 21 and undergoes phase change evaporation, absorbing heat from the tube wall. External air, under the action of a fan, enters from the air inlet pipe 11 and enters the interior of the annular gap 10, then flows from the gap between adjacent fins 22 to the cylindrical cavity 101, and finally exits from the air outlet pipe 12. During this process, the air sweeps across the surface of the fins 22, transferring the air heat to the fins 22 and the heat exchange tube 21, which is then absorbed by the refrigerant inside the heat exchange tube 21 and carried out of the heat exchange area, thereby achieving the purpose of air cooling and environmental refrigeration. In the prior art, the straight fins are arranged in a densely spaced, equidistant structure, with the fins parallel to each other. The gap width between the fins on the air inlet side and the air outlet side is equal. Because the gap on the air inlet side is relatively small, the resistance increases when the air enters the fins, resulting in increased fan energy consumption. In this embodiment, since the fins 22 are arranged in a ring, i.e., adjacent fins 22 form a V-shape, and the gap of the fins 22 near the cylindrical cavity 101 is set to be consistent with the prior art, the gap of the fins 22 near the annular gap 10 will be larger than the gap of the fins 22 near the cylindrical cavity 101. In other words, the gap on the air inlet side can be increased. When the number and size of the fins 22 are consistent with the prior art, the technical solution of this embodiment reduces the wind resistance on the windward side because the gap between adjacent fins 22 on the air inlet side is larger. As a result, the energy consumption of the fan will be reduced when it is working, thereby achieving the effect of high efficiency and energy saving.

[0032] In this embodiment, as Figure 3 As shown, the heat exchange structure 2 also includes a first support plate 23 and a second support plate 24. The first support plate 23 and the second support plate 24 are respectively arranged on both sides of the heat exchange tube 21 and fixed to a number of heat exchange tubes 21. The heat exchange structure 2 is supported in the cylinder 1 by the first support plate 23 and the second support plate 24. The number of heat exchange tubes 21 are connected end to end at the position of the first support plate 23.

[0033] Furthermore, such as Figure 4 As shown, a base 13 is installed at the bottom of the cylinder 1. Fixing column 131 and fixing column 22 are fixedly installed on both sides of the base 13 respectively. Support plate 13 and support plate 24 are supported on fixing column 131 and fixing column 22 respectively.

[0034] It should be noted that since several heat exchange tubes 21 need to be connected end to end to form a flow channel, fins 22 cannot be arranged at the end-to-end connection position. Therefore, a support plate 23 is designed. In addition, since the heat exchange structure 2 needs to be supported inside the cylinder 1, a support plate 24 is set at the symmetrical position of the support plate 23 for stable support. When installing the heat exchange structure 2, the support plate 23 and the support plate 24 are supported on the fixed column 131 and the fixed column 132 respectively.

[0035] In this embodiment, as Figure 2 As shown, a conical guide plate 3 is installed on the top of the heat exchange structure 2. The air outlet pipe 12 is fixed to the upper end of the conical guide plate 3. An air guide sleeve 31 is fixedly sleeved on the outer side of the air outlet pipe 12. The air inlet pipe 11 is fixed and connected to the side wall of the air guide sleeve 31. The lower end of the air guide sleeve 31 leads to the outer conical surface of the conical guide plate 3, and the gas is introduced into the annular gap 10 through the outer conical surface.

[0036] It should be noted that the air outlet duct 12 is set vertically and is directly opposite the cylindrical cavity 101, the air inlet duct 11 is set horizontally, the upper end of the air guide sleeve 31 is closed and the lower end is set. After the fan sends the air in through the air inlet duct 11, it blows downward through the air guide sleeve 31 and blows towards the outer cone surface of the conical guide plate 3. The air flows downward from the outer cone surface and enters the interior of the annular gap 10, so the conical guide plate 3 can play a role in equalizing the flow.

[0037] Example 2

[0038] like Figure 2 and Figures 6-7 As shown, the finned evaporator also includes a cleaning assembly 4, which includes several nozzles 41 arranged in a ring on the inner wall of the cylinder 1 and connected to the inner wall of the cylinder 1 through a ball joint. One end of the nozzle 41 is connected to a rigid tube 411, which extends to the outside of the cylinder 1.

[0039] Furthermore, a drive ring 42 is rotatably sleeved on the outer wall of the cylinder 1. The drive ring 42 has several through holes 421. A rigid tube 411 extends out from the through holes 421. A motor 43 is fixedly installed on the outer wall of the cylinder 1. A drive wheel 431 is installed at the output end of the motor 43. The drive wheel 431 presses against the annular surface of one end of the drive ring 42.

[0040] It should be noted that, as Figure 7 As shown, drive wheel 431 presses against the annular surface of the upper end of drive ring 42. When motor 43 drives drive wheel 431 to rotate, drive wheel 431 can drive drive ring 42 to rotate through friction. Rigid tube 411 extends from through hole 421. Motor 43 and drive wheel 431 drive drive ring 42 to rotate reciprocally at small angles, thus pushing rigid tube 411 through the side wall of through hole 421, causing nozzle 41 to swing back and forth. Rigid tube 411 is connected to a water pump, and water or cleaning fluid is sprayed onto fins 22 through rigid tube 411 to clean fins 22. It should also be noted that the upper and lower walls of through hole 421 are in contact with the upper and lower sides of rigid tube 411, while the left and right walls of through hole 421 are spaced apart from rigid tube 411 to prevent jamming between rigid tube 411 and through hole 421 during swinging.

[0041] In this embodiment, as Figure 2 , Figures 4-6 , Figures 8-9 As shown, a bottom plate 14 is provided on the bottom of the inner side of the cylinder 1. A sliding groove 141 and a sliding groove 142 are respectively provided on both sides of the bottom plate 14. A fixed column 131 is slidably disposed in the sliding groove 141, and a fixed column 132 is slidably disposed in the sliding groove 142. An electric push rod 7 is installed on the base 13. The electric push rod 7 is used to drive the bottom plate 14 to move vertically.

[0042] It should be noted that when the electric push rod 7 moves the base plate 14 to the highest point, the upper surface of the base plate 14 is in contact with the lower end of the fin 22, the base plate 14 is separated from the fin 22, and the base plate 14 does not support the heat exchange structure 2, but is only used to close the bottom of the gap between the fins 22.

[0043] Furthermore, a drainage assembly 5 is provided on the inner side of the base 13. The drainage assembly 5 includes a drainage pipe 51. One end of the drainage pipe 51 extends to the outer side of the base 13, and the other end of the drainage pipe 51 has an inner cavity 52. ​​A movable pipe 53 is connected to the middle of the base plate 14. A side opening 54 is provided on the side wall of the movable pipe 53, and the side opening 54 fits against the upper inner side wall of the drainage pipe 51.

[0044] It should be noted that under normal operating conditions, the side opening 54 is fitted against the inner wall of the drain pipe 51, thus sealing the side opening 54. After the fins 22 are cleaned by the cleaning assembly 4, there are still many impurities inside the annular gap 10 and the cylindrical cavity 101. At this time, if... Figure 5 As shown, the electric push rod 7 drives the base plate 14 to move downwards, and the movable tube 53 moves downwards at the upper end of the drain pipe 51. When the side opening 54 moves into the inner cavity 52, the cylindrical cavity 101 communicates with the inner cavity 52 at the position of the side opening 54, so that the impurities washed off can be discharged outwards from the drain pipe 51. After discharge, air can be introduced to dry the fins 22. After drying, the electric push rod 7 drives the base plate 14 to move upwards to reset. It should also be noted that after the fins 22 are cleaned with water, there are a lot of impurities inside the cylindrical cavity 101 and the annular gap 10, which are difficult for the impurities to pass through the gaps between the fins 22. Therefore, by moving the base plate 14 downwards, water and impurities can flow from the surface of the base plate 14 into the movable tube 53 and then be discharged, preventing impurities from accumulating between the fins 22.

[0045] The cleaning component 4 can be set in multiple sets in the axial direction of the cylinder 1 to enhance the cleaning effect.

[0046] In this embodiment, since the fins 22 are arranged in a ring and adjacent fins 22 form a V-shape, when the nozzle 41 sprays water, it can easily spray water between the fins 22 for cleaning. In contrast, in the prior art, if straight fins are sprayed with water for cleaning, the water is difficult to spray into the inside of the fins because the fins are parallel, meaning that a large area of ​​the fins cannot be cleaned.

[0047] Example 3

[0048] like Figure 2 , Figure 6 , Figure 10 As shown, an inner ring 6 is rotatably connected to the bottom of the inner side of the cylinder 1. Several blades 61 are installed on the inner wall of the inner ring 6. A second motor 62 is installed on the outer side of the cylinder 1. A second drive wheel 63 is installed at the output end of the second motor 62. The second drive wheel 63 presses on the annular surface at the upper end of the inner ring 6.

[0049] It should be noted that when the cleaning component 4 sprays water to clean the fins 22, the cylinder 1 can be filled with water, and then the motor 2 62 drives the drive wheel 2 63 to rotate. The drive wheel 2 63 drives the inner ring 6 to rotate through friction. The inner ring 6 can drive the blades 61 to stir inside the cylinder 1, thus providing a method of cleaning the fins 22 by soaking and stirring.

[0050] Furthermore, one end of the blade 61 is hinged to the inner ring 6 via a torsion spring. Under normal conditions, the blade 61 is attached to the inner wall of the inner ring 6. The other end of the inner ring 6 and the side closest to the inner wall of the inner ring 6 have a bevel 611. A gasket is installed between the blade 61 and the inner wall of the inner ring 6.

[0051] It should be noted that the bevel 611 can increase the disturbance of water. By installing a shim between the blade 61 and the inner ring 6, the tilt angle of the blade 61 can be changed. The appropriate shim thickness can be selected as needed. For example, in working environments with low dust adhesion, a thinner shim can be set, while in working environments with high dust adhesion, a thicker shim can be set to increase the blade 61's ability to disturb water.

[0052] Working principle:

[0053] During operation of this evaporator, liquid refrigerant flows inside the heat exchange tube 21, absorbing heat from the tube wall. External air, driven by a fan, enters through the inlet duct 11 and into the annular gap 10. It then flows through the gaps between adjacent fins 22 to the cylindrical cavity 101, transferring heat from the air to the fins 22 and heat exchange tube 21. The refrigerant within the heat exchange tube 21 absorbs the heat and carries it out of the heat exchange area, finally discharging it through the outlet duct 12. When cleaning of the fins 22 is required, water or cleaning fluid is sprayed onto them through the rigid pipe 411. During this process, motor 43 drives the drive wheel 431 to rotate, which in turn drives the drive ring 42 to rotate reciprocally at small angles, causing the nozzle 41 to swing back and forth, expanding the spray range. The cleaning fluid can be discharged at this time, or it can be left undischarged. If the water is not drained, a larger amount of water is sprayed into the cylinder 1 through the nozzle 41. The motor 62 drives the drive wheel 63 to rotate, which in turn drives the inner ring 6 to rotate, causing the blades 61 to agitate inside the cylinder 1, thereby further soaking, stirring, and cleaning the fins 22. Then, the cleaning solution and impurities are drained. The electric push rod 7 drives the base plate 14 to move downward. When the side opening 54 moves into the inner cavity 52, the cylindrical cavity 101 connects with the inner cavity 52 at the position of the side opening 54. The cleaned impurities can be discharged outward through the drain pipe 51. After the discharge is complete, air can be introduced to dry the fins 22. After drying is complete, the electric push rod 7 drives the base plate 14 to move upward and reset.

[0054] The embodiments of this example have been described above. However, this example is not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms based on the guidance of this example, and all of them are within the protection scope of this example.

Claims

1. A high-efficiency and energy-saving finned evaporator, characterized in that, The device includes a cylindrical body (1), and a heat exchange structure (2) is provided inside the cylindrical body (1). The heat exchange structure (2) includes multiple heat exchange tubes (21) arranged in a vertical array. Several fins (22) are provided on the outer side of the multiple heat exchange tubes (21). The heat exchange tubes (21) are annular, so that the several fins (22) are arranged in an annular structure. The several heat exchange tubes (21) are connected end to end to form a flow channel. The inner wall of the cylinder (1) has an annular gap (10) between it and the annular structure formed by the arrangement of several fins (22). The middle part of the annular structure is a cylindrical cavity (101). An air inlet pipe (11) and an air outlet pipe (12) are provided on the cylinder (1). The air inlet pipe (11) is connected to the annular gap (10), and the air outlet pipe (12) is connected to the cylindrical cavity (101).

2. The high-efficiency and energy-saving finned evaporator according to claim 1, characterized in that, The heat exchange structure (2) also includes a support plate one (23) and a support plate two (24). The support plate one (23) and the support plate two (24) are respectively arranged on both sides of the heat exchange tube (21) and fixed to a number of heat exchange tubes (21). The heat exchange structure (2) is supported in the cylinder (1) by the support plate one (23) and the support plate two (24). The number of heat exchange tubes (21) are connected end to end at the position of the support plate one (23).

3. The high-efficiency and energy-saving finned evaporator according to claim 1, characterized in that, The heat exchange structure (2) is equipped with a conical guide plate (3) at the top. The air outlet pipe (12) is fixed to the upper end of the conical guide plate (3). The air outlet pipe (12) is fixedly sleeved with an air guide sleeve (31) on the outside. The air inlet pipe (11) is fixed and connected to the side wall of the air guide sleeve (31). The lower end of the air guide sleeve (31) leads to the outer conical surface of the conical guide plate (3). The gas is introduced into the annular gap (10) through the outer conical surface.

4. The high-efficiency and energy-saving finned evaporator according to claim 1, characterized in that, The finned evaporator also includes a cleaning assembly (4), which includes several nozzles (41). The nozzles (41) are arranged in a ring on the inner wall of the cylinder (1) and connected to the inner wall of the cylinder (1) through a ball joint. One end of each nozzle (41) is connected to a rigid tube (411), which extends to the outside of the cylinder (1).

5. A high-efficiency and energy-saving finned evaporator according to claim 4, characterized in that, A drive ring (42) is rotatably sleeved on the outer wall of the cylinder (1). The drive ring (42) has several through holes (421). The rigid tube (411) extends out from the through holes (421). A motor (43) is fixedly installed on the outer wall of the cylinder (1). A drive wheel (431) is installed at the output end of the motor (43). The drive wheel (431) presses on the annular surface of one end of the drive ring (42).

6. A high-efficiency and energy-saving finned evaporator according to claim 2, characterized in that, The bottom of the cylinder (1) is equipped with a base (13), and two fixed columns (131 and 132) are fixedly installed on both sides of the base (13). The support plate (23) and the support plate (24) are supported on the fixed columns (131 and 132) respectively.

7. A high-efficiency and energy-saving finned evaporator according to claim 6, characterized in that, The bottom of the inner side of the cylinder (1) is provided with a base plate (14). The two sides of the base plate (14) are respectively provided with a sliding groove (141) and a sliding groove (142). The first fixed column (131) is slidably disposed in the first sliding groove (141), and the second fixed column (132) is slidably disposed in the second sliding groove (142). An electric push rod (7) is installed on the base (13). The electric push rod (7) is used to drive the base plate (14) to move vertically.

8. A high-efficiency and energy-saving finned evaporator according to claim 7, characterized in that, The base (13) is provided with a drainage assembly (5) on its inner side. The drainage assembly (5) includes a drain pipe (51). One end of the drain pipe (51) extends to the outer side of the base (13). The other end of the drain pipe (51) has an inner cavity (52). The middle part of the base plate (14) is connected to a movable pipe (53). A side opening (54) is provided on the side wall of the movable pipe (53). The side opening (54) fits against the inner side wall of the upper end of the drain pipe (51).

9. A high-efficiency and energy-saving finned evaporator according to claim 1, characterized in that, The bottom of the inner side of the cylinder (1) is rotatably connected to an inner ring (6). Several blades (61) are installed on the inner wall of the inner ring (6). A second motor (62) is installed on the outer side of the cylinder (1). A second drive wheel (63) is installed at the output end of the second motor (62). The second drive wheel (63) presses on the annular surface at the upper end of the inner ring (6).

10. A high-efficiency and energy-saving finned evaporator according to claim 9, characterized in that, One end of the blade (61) is hinged to the inner ring (6) by a torsion spring. Under normal conditions, the blade (61) is attached to the inner wall of the inner ring (6). The other end of the inner ring (6) and the side close to the inner wall of the inner ring (6) are provided with a slanted opening (611). A gasket is installed between the blade (61) and the inner wall of the inner ring (6).

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