Efficient refrigeration fin evaporator

Abstract

The efficient refrigeration fin evaporator comprises two frame plates, a feeding pipe and a backflow pipe, a plurality of evaporation bent pipes and evaporation plates are arranged between the two frame plates, the evaporation plates are fixed to the outer portions of the evaporation bent pipes, and a communication assembly is arranged between every two adjacent evaporation bent pipes. The multiple communicating assemblies communicate with the feeding pipe and the backflow pipe. And the control mechanism is arranged on the frame plate. The circulating states between the feeding pipe and the evaporation bent pipes and between the backflow pipe and the evaporation bent pipes are adjusted through the driving control mechanism at the same time, when the feeding pipe and the backflow pipe communicate with the single evaporation bent pipes correspondingly, the flow of a refrigerant is maximum at the moment, the cooling effect is faster and more efficient, and when the refrigerant flows in the multiple communicating evaporation bent pipes, the cooling efficiency is higher. The refrigerating effect of the device is gradually reduced, but the flow of the refrigerant is minimum, and the device can be adjusted according to specific refrigerating requirements and has high practicability.

Description

Technical Field

[0001] The invention relates to the technical field of fin evaporators, and in particular to a high-efficiency refrigeration fin evaporator. Background Art

[0002] The evaporator is an object that converts liquid substances into gaseous substances. It is a very important component among the four major parts of refrigeration. The low-temperature condensed liquid passes through the evaporator and exchanges heat with the outside air, gasifies and absorbs heat to achieve the effect of refrigeration. The plate evaporator is a type of evaporator. The main components of the plate evaporator include plates, fixed clamping plates, movable clamping plates, upper and lower guide beams, pillars, clamping bolts and connecting flanges. These components together constitute the main structure of the plate evaporator. The plate is the main heat transfer element, and its corrugation forms are various, such as spherical corrugation, horizontal corrugation, vertical corrugation and oblique corrugation. The material channel and the heating channel are alternately formed through a special installation structure, and each flows in countercurrent in the corresponding channel.

[0003] As shown in the application number: 202022897871.1, the Chinese utility model patent named "A tube-plate evaporator for a compressed air precooling unit" discloses a tube-plate evaporator for a compressed air precooling unit, comprising an aluminum plate and an evaporating tube arranged on the aluminum plate, the aluminum plate being provided with a tube groove, the evaporating tube being placed in the tube groove, and the evaporating tube being fixed to the aluminum plate by a fixing ring; a fixing seat being provided on the aluminum plate, and a clamping portion being inserted into the fixing seat and the long groove; a fixing device being provided in the fixing seat, the fixing device comprising a pair of clamping rings, the clamping rings being overlapped up and down, an extrusion rod being provided on the clamping ring, a spring being provided between the extrusion rod and the side wall of the fixing seat, the spring being welded and fixed to the extrusion rod, a groove being provided on the clamping portion on the fixing ring, the clamping portion passing through a circular hole formed by two clamping rings, and the clamping ring being clamped on the groove.

[0004] The shortcomings of the existing technology are: the plate evaporator mainly achieves temperature change by flowing the coolant in the evaporation tube and exchanging energy with the external environment through the plate, but the existing evaporation tube path is long, and the temperature of the coolant will gradually change when flowing inside it, resulting in the space cooling effect at the end is not as good as that at the front end, resulting in poor cooling effect, which has certain shortcomings. Summary of the invention

[0005] The object of the present invention is to provide a high-efficiency refrigeration fin evaporator to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-efficiency refrigeration fin evaporator, comprising two frame plates, a feed pipe, and a return pipe, a plurality of evaporation elbows and an evaporation plate are arranged between the two frame plates, the evaporation plate is fixed on the outside of the evaporation elbow, a connecting component is arranged between two adjacent evaporation elbows, and the plurality of connecting components are connected to the feed pipe and the return pipe; it also includes a control mechanism, which is arranged on the frame plate; the connecting state between the corresponding connecting component and the evaporation elbow is adjusted by the control mechanism so that the coolant flows in the evaporation elbows of different lengths, so as to adjust the refrigeration efficiency of the evaporator.

[0007] As a further description of the above technical solution:

[0008] The communication component comprises a communication block fixedly connected to the frame plate; a first space, a second space and a channel hole are arranged in the communication block, and the channel hole connects the first space with the second space.

[0009] As a further description of the above technical solution:

[0010] The feed pipe is connected with a plurality of branched tubes 1, each of which is connected with the corresponding second space; the return pipe is connected with a plurality of branched tubes 2, each of which is connected with the corresponding first space, each of the branched tubes 1 and 2 is provided with a rotary valve, and each of the rotary valves is provided with a gear.

[0011] As a further description of the above technical solution:

[0012] The control mechanism includes a support plate fixedly connected to the frame plate, and a rotating rod is arranged on the support plate; two abutment blocks 1, two abutment blocks 2 and abutment block 3 are arranged on the rotating rod, an operating handle is fixedly connected to the top end of the rotating rod, a locking unit is arranged on the operating handle, and a blocking component is arranged on the connecting block.

[0013] As a further description of the above technical solution:

[0014] The blocking assembly includes a connecting rod slidably connected to the connecting block, and the two ends of the connecting rod are respectively fixedly connected to a blocking plate and a contact plate; a spring 1 is arranged between the contact plate and the connecting block, and the elastic force of the spring 1 drives the contact plate to contact the abutment block, and a driving unit is also arranged on the contact plate.

[0015] As a further description of the above technical solution:

[0016] When the rotating rod rotates, it has the following three rotation angles: at the first rotation angle, the two abutment blocks 1, the two abutment blocks 2 and the abutment block 3 all push the corresponding contact plates to move, and the contact plates push the sealing plates to move to seal the channel holes, so that the coolant only flows in a single evaporator bend; at the second angle, the two abutment blocks 1 and the two abutment blocks 3 are reset, and the two abutment blocks 2 drive the contact plates to remain unchanged, the coolant flows in the two evaporator bends, and its flow path becomes longer; at the third angle, the two abutment blocks 1 and the two abutment blocks 2 are reset, and the abutment block 3 drives the contact plates to push the sealing plates to move to seal the corresponding channel holes, so that the coolant flows in the three evaporator bends, and its flow path grows again.

[0017] As a further description of the above technical solution:

[0018] The driving unit comprises a toothed plate fixedly connected to both sides of the contact plate, and the toothed plate is in contact with the gear during the movement.

[0019] As a further description of the above technical solution:

[0020] The locking unit includes a fixed ring fixedly connected to the operating handle, a movable plate 1 is slidably connected in the fixed ring, and a clamping rod is fixedly connected to the movable plate 1; a spring 2 is arranged between the movable plate 1 and the fixed ring, and the elastic force of the spring 2 drives the clamping rod to engage with the support plate, and an operating unit is also arranged on the operating handle.

[0021] As a further description of the above technical solution:

[0022] The operating unit includes a moving plate 2 fixedly and slidably connected in a fixed ring, a cross frame is rotatably connected in the fixed ring, and the cross frame is arranged between the moving plate 1 and the moving plate 2; an operating rod is fixedly connected to the moving plate 2, and the operating rod extends to the outer handle of the operating handle and is fixedly connected to a connecting plate.

[0023] As a further description of the above technical solution:

[0024] The tail end of the first evaporation elbow is communicated with the second space, and the front end of the second evaporation elbow is communicated with the first space.

[0025] In the above technical solution, the present invention provides a high-efficiency refrigeration fin evaporator with the following beneficial effects:

[0026] The present invention sets the frame plate, the feed pipe, the return pipe, the evaporation elbow, the evaporation plate, the connecting component and the control mechanism to cooperate with each other, and drives the control mechanism to simultaneously adjust the flow state between the feed pipe and the return pipe and each evaporation elbow. When the feed pipe and the return pipe are respectively connected to a single evaporation elbow, the flow rate of the refrigerant is the largest, and the cooling effect is faster and more efficient. When the refrigerant flows in multiple connected evaporation elbows, the refrigeration effect will gradually decrease, but the flow rate of the refrigerant is the smallest. The device can be adjusted according to specific refrigeration needs and has strong practicality.

[0027] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0028] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0030] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0031] Figure 2 Another perspective view of the overall structure provided by the embodiment of the present invention;

[0032] Figure 3 A schematic diagram of a local structure provided by an embodiment of the present invention;

[0033] Figure 4 A schematic diagram of the exploded connection structure of the connecting component, the evaporation elbow and the plugging component provided in an embodiment of the present invention;

[0034] Figure 5 A schematic diagram of the structure of a local control mechanism provided by an embodiment of the present invention;

[0035] Figure 6 A schematic diagram of a connected block structure provided by an embodiment of the present invention;

[0036] Figure 7 A schematic diagram of the structure of a plugging assembly provided in an embodiment of the present invention;

[0037] Figure 8 A schematic longitudinal section diagram of a support plate structure provided by an embodiment of the present invention;

[0038] Fig. 9 for Figure 4 The enlarged view of point A in the middle;

[0039] Fig.10 for Figure 8 Enlarged view of point B in the middle.

[0040] Description of reference numerals:

[0041] 11. Frame plate; 12. Feed pipe; 13. Reflux pipe; 14. Evaporation elbow; 15. Evaporation plate; 21. Connecting block; 22. First space; 23. Second space; 24. Channel hole; 31. Bifurcation pipe one; 32. Bifurcation pipe two; 33. Rotary valve; 34. Gear; 41. Support plate; 42. Rotating rod; 43. Abutment block one; 44. Abutment block two; 45. Abutment block three; 46. Operating handle; 51. Connecting rod; 52. Sealing plate; 53. Contact plate; 54. Spring one; 6. Tooth plate; 71. Fixed ring; 72. Moving plate one; 73. Clamping rod; 74. Spring two; 81. Moving plate two; 82. Cross frame; 83. Operating rod; 84. Connecting plate. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0043] See also Figure 1-10The present embodiment provides a high-efficiency refrigeration fin evaporator, comprising two frame plates 11, a feed pipe 12, and a return pipe 13. A plurality of evaporation elbows 14 and an evaporation plate 15 are arranged between the two frame plates 11. The evaporation plate 15 is fixed to the outside of the evaporation elbow 14. The frame plates 11, the feed pipe 12, the return pipe 13, the evaporation elbow 14, and the evaporation plate 15 are all existing fin evaporator structures, and will not be described in detail here. A connecting component is arranged between two adjacent evaporation elbows 14. The evaporation elbows 14 can be assembled into a coolant flow channel with a longer flow channel through the connecting component, which is convenient for cooling and refrigerating a large area of ​​material. The connecting components are all connected with the supply pipe 12 and the return pipe 13; it also includes a control mechanism, which is arranged on the frame plate 11; the control mechanism is used to adjust the connection state between the corresponding connecting components and the evaporation elbow 14, so that the coolant flows in the evaporation elbow 14 of different lengths, so as to adjust the refrigeration efficiency of the evaporator. When the coolant enters multiple shorter evaporation elbow 14 channels at the same time, the cooling effect is the fastest, but the consumption of the coolant is the highest. On the contrary, the longer the channel connected to the evaporation elbow 14, the lower the cooling effect of the subsequent part, but the consumption of the coolant will be relatively reduced, so as to adjust the refrigeration efficiency according to the specific refrigeration needs.

[0044] In an embodiment further provided by the present invention, the connecting component includes a connecting block 21 fixedly connected to the frame plate 11; a first space 22, a second space 23 and a channel hole 24 are provided in the connecting block 21, and the channel hole 24 connects the first space 22 with the second space 23. The first space 22 and the second space 23 are respectively arranged at the upper and lower parts of the connecting block 21, and the coolant in the first space 22 flows into the second space 23 through the opened channel hole 24.

[0045] Furthermore, the feed pipe 12 is connected with a plurality of branch pipes 1 31, each of which is connected to the corresponding second space 23; the return pipe 13 is connected with a plurality of branch pipes 2 32, each of which is connected to the corresponding first space 22, and each branch pipe 1 31 and each branch pipe 2 32 is provided with a rotary valve 33, and each rotary valve 33 is provided with a gear 34. By controlling the state of the rotary valve 33, it is possible to control whether the coolant in the feed pipe 12 enters the second space 23 through the branch pipe 1 31, and whether the coolant in the first space 22 enters the return pipe 13 through the branch pipe 2 32, thereby ensuring that the front end of the top evaporation bend 14 is directly connected to the feed pipe 12, and the tail end of the bottom evaporation bend 14 is directly connected to the return pipe 13.

[0046] Furthermore, the control mechanism includes a support plate 41 fixedly connected to the frame plate 11, and a rotating rod 42 is arranged on the support plate 41; the rotating rod 42 is provided with two abutment blocks 1 43, two abutment blocks 2 44 and abutment blocks 3 45, the two abutment blocks 1 43 are respectively arranged at the two ends of the rotating rod 42, the abutment block 3 45 is arranged at the center line of the rotating rod 42, and the two abutment blocks 2 44 are respectively arranged at the center points of the two abutment blocks 1 43 and the abutment blocks 3 45, wherein the abutment block 1 43 is arranged in a cam shape, and the arc length of its protruding end is the shortest, the abutment block 2 44 is also arranged in a cam shape, and the arc length of its protruding end is longer than the arc length of the protruding end of the abutment block 1 43, and the abutment block 3 45 is symmetrically distributed by two cams, and its specific setting shape can be found in the appendix of the instruction manual. Figure 5 The top of the rotating rod 42 is fixedly connected with an operating handle 46. The operating handle 46 is provided to facilitate the rotation of the rotating rod 42 on the supporting plate 41. The operating handle 46 is provided with a locking unit, and the connecting block 21 is provided with a blocking component.

[0047] In an embodiment further provided by the present invention, the sealing assembly includes a connecting rod 51 slidably connected to the connecting block 21, and the two ends of the connecting rod 51 are respectively fixedly connected to a sealing plate 52 and a contact plate 53; a spring 54 is arranged between the contact plate 53 and the connecting block 21, and the elastic force of the spring 54 drives the contact plate 53 to contact the abutment block, and a driving unit is also arranged on the contact plate 53. A dynamic seal needs to be arranged at the sliding position of the connecting rod 51 on the connecting block 21 to prevent leakage of coolant. Two groups of sealing plates 52 can be arranged to simultaneously seal the upper and lower parts of the channel hole 24.

[0048] In the embodiment provided by the present invention, the rotating rod 42 has the following three rotation angles when it rotates: at the first rotation angle, the two abutment blocks 1 43, the two abutment blocks 2 44 and the abutment block 3 45 all push the corresponding contact plate 53 to move, and the contact plate 53 pushes the blocking plate to move to block the channel hole 24, so that the coolant only flows in a single evaporation bend 14; at the second angle, the two abutment blocks 1 43 and the abutment blocks 3 45 are reset, and the two abutment blocks 2 44 drive the contact plate 53 to remain unchanged, and the coolant flows in the two evaporation bends 14, and its flow channel becomes longer; at the third angle, the two abutment blocks 1 43 and the two abutment blocks 2 44 are reset, and the abutment block 3 45 drives the contact plate 53 to push the blocking plate to move to block the corresponding channel hole 24, so that the coolant flows in the three evaporation bends 14, and its flow channel increases again.

[0049] In the solution further provided by the present invention, the driving unit includes a tooth plate 6 fixedly connected to both sides of the contact plate 53, and the tooth plate 6 contacts the gear 34 during its movement. The reciprocating motion of the tooth plate 6 can control the state of the rotary valve 33 on the forked tube 1 31 and the forked tube 2 32.

[0050] In the solution further provided by the present invention, the locking unit includes a fixed ring 71 fixedly connected to the operating handle 46, a movable plate 72 is slidably connected in the fixed ring 71, and a clamping rod 73 is fixedly connected to the movable plate 72; a spring 2 74 is arranged between the movable plate 1 72 and the fixed ring 71, and the elastic force of the spring 2 74 drives the clamping rod 73 to clamp and cooperate with the support plate 41, and an operating unit is also arranged on the operating handle 46, and a hole matching the clamping rod 73 needs to be opened on the support plate 41 so that the rotating rod 42 can be fixed and maintain the adjusted state after rotation.

[0051] In the solution further provided by the present invention, the operating unit includes a movable plate 81 fixedly and slidably connected to the fixed ring 71, and a cross frame 82 is rotatably connected in the fixed ring 71, and the cross frame 82 is arranged between the movable plate 1 72 and the movable plate 2 81; an operating rod 83 is fixedly connected to the movable plate 2 81, and the operating rod 83 extends to the outer handle of the operating handle 46 and is fixedly connected to the connecting plate 84. Through the cross frame 82, when the connecting plate 84 moves downward, the operating rod 83, the movable plate 1 72 and the movable plate 2 81 cooperate to drive the clamping rod 73 to move up and disengage from the support plate 41 to achieve unlocking.

[0052] In the solution further provided by the present invention, the tail end of the previous evaporation elbow 14 is connected to the second space 23, the front end of the next evaporation elbow 14 is connected to the first space 22, and the tail end of the previous evaporation elbow 14 and the front end of the next evaporation elbow 14 are connected on the same connecting block 21.

[0053] Working principle: During operation, if you want to quickly adjust the cooling effect of the evaporator, by pressing the connecting plate 84 on the operating handle 46 downward, the connecting plate 84 pushes the movable plate 2 81 downward through the operating rod 83, so that the cross frame 82 contracts and drives the movable plate 1 72 connected to the other end thereof to move upward, and the movable plate 1 72 drives the clamping rod 73 to move upward and separate from the support plate 41. At this time, by rotating the operating handle 46, the rotating rod 42 drives the two abutment blocks 1 43, the two abutment blocks 2 44 and the abutment block 3 45 to rotate synchronously. At this time, when the protrusions on the two abutment blocks 1 43, the two abutment blocks 2 44 and the abutment block 3 45 are in contact with the corresponding contact plates 53, the contact plates 53 will be pushed to move toward the connecting block 21 side until the channel hole 24 is blocked by the blocking plate 52 set on one side of the contact plate 53 by the connecting rod 51. At the same time, the tooth plate 6 set on the contact plate 53 will contact the rotary valve 33 on the bifurcated pipe 1 31 and the bifurcated pipe 2 32, and through the rotary valve 3 The gear 34 on the gear plate 3 is meshed with the gear plate 6, driving the rotary valve 33 to rotate and open. At this time, the coolant will enter the evaporation elbow 14 from the supply pipe 12, or enter the second space 23 through the opened branch pipe 31, and finally enter the evaporation elbow 14, and flow along the evaporation elbow 14 and enter the first space 22 in the next connecting block 21. Since the channel hole 24 in the space is blocked by the blocking block, the coolant entering the first space 22 will flow along the branch pipe 31. The second fork pipe 32 enters the return pipe 13 for reflux treatment and reuse. Since the flow path of the single evaporation elbow 14 is short, the coolant reflux speed is fast, so that an efficient cooling effect can be achieved. After the adjustment of the rotating rod 42 is completed, the pressure on the connecting plate 84 on the operating handle 46 is released, so that the restoring force of the second spring 74 pushes the first moving plate 72 downward, and the first moving plate 72 moves upward. The rotation of the cross frame 82 allows the second moving plate 81 to drive the connecting rod 51 upward and reset through the operating rod 83;

[0054] When the rotating rod 42 rotates, the two abutment blocks 1 43, the two abutment blocks 2 44 and the abutment block 3 45 rotate synchronously. If the protrusions on the two abutment blocks 1 43 and the abutment blocks 3 45 arranged on the rotating rod 42 are separated from the corresponding contact plates 53, and the protrusions on the two abutment blocks 2 44 are in contact with the corresponding contact plates 53, the two contact plates 53 arranged at the abutment blocks 2 44 will block the channel hole 24 through the blocking plate 52 arranged on one side of the contact plate 53 by the connecting rod 51, and trigger the rotating plates on the bifurcated tube 1 31 and the bifurcated tube 2 32 on the same plane. The rotary valve 33 is opened, and the blocking plates 52 located at the two abutment blocks 1 43 and the abutment block 3 45 do not move, and the channel hole 24 is not blocked. The rotary valves 33 on both sides are not opened. At this time, the coolant entering the evaporation elbow 14 will enter the next layer of the connecting block 21 through the evaporation elbow 14, and enter the first space 22 along the second space 23 and the channel hole 24 in the connecting block 21, and finally enter the next evaporation elbow 14 along the first space 22. At this time, the flow path of the coolant will become longer, and its refrigeration effect will be reduced, but the amount of coolant passing through its flow path will be reduced;

[0055] When the rotating rod 42 drives the protrusion of the abutment block 3 45 to contact the corresponding contact plate 53, and the protrusions of the two abutment blocks 1 43 and the two abutment blocks 2 44 are not in contact with the corresponding contact plate 53, the three evaporation elbows 14 are interconnected, and the channel of the coolant is extended again, and the refrigeration effect is further reduced, but the amount of coolant passing through the flow channel is further reduced;

[0056] When the rotating rod 42 rotates to drive the protrusions of the two abutment blocks 1 43, the two abutment blocks 2 44 and the abutment block 3 45 to stop contacting the contact plate 53, the multiple evaporation bent pipes 14 are all connected. At this time, the channel of the coolant is the longest and the refrigeration effect is the worst, but the amount of coolant passing through the flow channel is the least, so the user can adjust it according to specific refrigeration needs.

[0057] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-efficiency refrigeration fin evaporator, comprising two frame plates (11), a feed pipe (12), and a return pipe (13), a plurality of evaporation elbows (14) and an evaporation plate (15) are arranged between the two frame plates (11), and the evaporation plate (15) is fixed to the outside of the evaporation elbow (14), characterized in that: A communication component is provided between two adjacent evaporation elbows (14), and a plurality of the communication components are all connected to the feed pipe (12) and the return pipe (13); It also includes a control mechanism, which is arranged on the frame plate (11); The control mechanism is used to adjust the connection state between the corresponding connection components and the evaporation elbow (14), so that the cooling liquid flows in the evaporation elbow (14) of different lengths, so as to adjust the refrigeration efficiency of the evaporator.

2. The high-efficiency refrigeration fin evaporator according to claim 1, characterized in that: The communication component comprises a communication block (21) fixedly connected to the frame plate (11); The connecting block (21) is provided with a first space (22), a second space (23) and a channel hole (24), and the channel hole (24) connects the first space (22) and the second space (23).

3. A high-efficiency refrigeration fin evaporator according to claim 2, characterized in that: The feed pipe (12) is connected to a plurality of bifurcated pipes (31), each of the bifurcated pipes being connected to a corresponding second space (23); The return pipe (13) is connected to a plurality of branch pipes (32), each of which is connected to a corresponding first space (22). A rotary valve (33) is provided on each of the branch pipes (31) and the branch pipes (32), and a gear (34) is provided on each of the rotary valves (33).

4. The high-efficiency refrigeration fin evaporator according to claim 3, characterized in that: The control mechanism comprises a support plate (41) fixedly connected to the frame plate (11), and a rotating rod (42) is arranged on the support plate (41); The rotating rod (42) is provided with two abutment blocks 1 (43), two abutment blocks 2 (44) and abutment block 3 (45); the top end of the rotating rod (42) is fixedly connected with an operating handle (46); the operating handle (46) is provided with a locking unit; and the connecting block (21) is provided with a blocking component.

5. The high-efficiency refrigeration fin evaporator according to claim 4, characterized in that: The blocking assembly comprises a connecting rod (51) slidably connected to the connecting block (21), and both ends of the connecting rod (51) are respectively fixedly connected to a blocking plate (52) and a contact plate (53); A spring 1 (54) is provided between the contact plate (53) and the connecting block (21); the elastic force of the spring 1 (54) drives the contact plate (53) to contact the abutment block; and a driving unit is also provided on the contact plate (53).

6. The high-efficiency refrigeration fin evaporator according to claim 4, characterized in that: The rotating rod (42) has the following three rotation angles when rotating: At a first rotation angle, the two abutment blocks 1 (43), the two abutment blocks 2 (44) and the abutment block 3 (45) all push the corresponding contact plates (53) to move, and the contact plates (53) push the blocking plate to move to block the channel hole (24), so that the coolant flows only in a single evaporation elbow (14); At the second angle, the two abutment blocks 1 (43) and the abutment block 3 (45) are reset, the two abutment blocks 2 (44) drive the contact plate (53) to remain unchanged, and the coolant flows in the two evaporation elbows (14), and the flow path thereof becomes longer; At the third angle, the two abutment blocks 1 (43) and the two abutment blocks are reset, and the abutment block 3 (45) drives the contact plate (53) to push the blocking plate to move and block the corresponding channel holes (24), so that the coolant flows in the three evaporation bends (14), and the flow channel thereof increases again.

7. The high-efficiency refrigeration fin evaporator according to claim 5, characterized in that: The driving unit comprises a toothed plate (6) fixedly connected to both sides of a contact plate (53), and the toothed plate (6) contacts the gear (34) during the movement.

8. The high-efficiency refrigeration fin evaporator according to claim 4, characterized in that: The locking unit comprises a fixing ring (71) fixedly connected to the operating handle (46), a moving plate (72) being slidably connected to the fixing ring (71), and a clamping rod (73) being fixedly connected to the moving plate (72); A second spring (74) is provided between the first movable plate (72) and the fixed ring (71), and the elastic force of the second spring (74) drives the clamping rod (73) to engage with the support plate (41), and an operating unit is also provided on the operating handle (46).

9. The high-efficiency refrigeration fin evaporator according to claim 8, characterized in that: The operating unit comprises a second moving plate (81) fixedly and slidably connected in a fixed ring (71), a cross frame (82) rotatably connected in the fixed ring (71), and the cross frame (82) is arranged between the first moving plate (72) and the second moving plate (81); An operating rod (83) is fixedly connected to the second movable plate (81), and the operating rod (83) extends to the outer handle of the operating handle (46) and is fixedly connected to a connecting plate (84).

10. The high-efficiency refrigeration fin evaporator according to claim 2, characterized in that: The rear end of the first evaporation elbow (14) is connected to the second space (23), and the front end of the second evaporation elbow (14) is connected to the first space (22).

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