CN114251877B

CN114251877B - Fin type evaporator

Info

Publication number: CN114251877B
Application number: CN202111569070.5A
Authority: CN
Inventors: 王向阳; 郭颂
Original assignee: Guangzhou Zhaneng Electromechanical Equipment Co ltd
Current assignee: Guangzhou Zhaneng Electromechanical Equipment Co ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2023-08-25
Anticipated expiration: 2041-12-21
Also published as: CN114251877A

Abstract

The invention relates to the technical field of evaporators, in particular to a fin type evaporator which comprises an evaporation tube, a first support and a second support, wherein the first support and the second support are of the same structure, the left side of the outer surface of the evaporation tube is fixedly connected with the first support, the right side of the outer surface of the evaporation tube is fixedly connected with the second support, a plurality of groups of fins are distributed between the first support and the second support at equal intervals, the evaporation tube penetrates through the fins and extends to the outer parts of the first support and the second support, a cleaning mechanism is arranged between every two adjacent fins, a rotating mechanism is arranged on the right side of the second support, a first wind hole is formed in the outer surface of the right side of the second support, and a support frame is fixedly connected with the right side outer surface of the second support at equal intervals in an annular mode. This fin type evaporator not only can clear up the dust of piling up between the fin, avoids the pollution to the workshop internal air, can also condense the frost that forms to produce on the fin and carry out defrosting work, prevents that frost from producing the effect of blocking to the heat exchange between evaporator and the air, improves the work efficiency of equipment.

Description

Fin type evaporator

Technical Field

The invention relates to the technical field of evaporators, in particular to a fin type evaporator.

Background

Evaporation is the physical process of converting a liquid state into a gaseous state. In general, a vaporizer, i.e. a body in which a liquid substance is converted into a gas state. There are a large number of evaporators in industry, one of which is the evaporator used in refrigeration systems. The evaporator is an important part in four refrigeration parts, low-temperature condensed liquid passes through the evaporator to exchange heat with outside air, gasification absorbs heat, and the refrigeration effect is achieved, and the evaporator mainly comprises a heating chamber and an evaporating chamber. The heating chamber provides heat required for evaporation to the liquid, causing the liquid to boil and evaporate; the evaporating chamber enables the gas phase and the liquid phase to be completely separated;

the experimental observation of the ash deposition process of a finned tube air conditioner evaporator is as follows: most of the air conditioner evaporators adopt fin-tube heat exchangers, dust is adhered to the fin-tube heat exchangers due to surface moisture-out in the refrigerating operation process, and air flow resistance is increased.

In the prior art, the fin type evaporator is arranged in a machine in a using process, dust is easily accumulated among fin gaps because the fin type evaporator is not cleaned for a long time, and indoor air is polluted after long-term work, so that the health of people is influenced, and the dust is larger and the equipment is more easily attached to dust to influence the working efficiency of the equipment especially for flour processing workshops; the surface temperature of the fin evaporator is far lower than the dew point temperature of air when the fin evaporator works, water in the air on the pipe wall can be separated out to condense into frost, and the frost layer forms larger heat resistance because the heat conductivity of the frost is smaller and is several percent of metal, so that the working efficiency of the evaporator is greatly influenced, and the refrigerating effect is influenced.

For this purpose, a fin evaporator is proposed.

Disclosure of Invention

The present invention is directed to a fin type evaporator, which solves the above-mentioned problems.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a fin formula evaporimeter, includes first and second support of evaporating pipe and the same design of structure, the surface left side fixedly connected with support of evaporating pipe is first, the surface right side fixedly connected with support of evaporating pipe is second, equidistance distributes between support first and the support is second has a plurality of groups fins, evaporating pipe runs through the fin and extends to the outside of support first and support second, adjacent be provided with clearance mechanism between the fin, the right side of support second is provided with rotary mechanism, wind hole first has been seted up to the right side surface of support second, the right side surface annular equidistance fixedly connected with support frame of support second, three groups the right side surface fixedly connected with support of support frame.

The rotary mechanism comprises a motor, a fan, a transmission gear, an internal gear, an external gear, rotating wheels, a first bearing and a second bearing, wherein a first groove is formed in the lower end of the second support, the rotating wheels are all sleeved and rotated on the annular outer surface of the second support through the first groove, the right outer surface of the support is fixedly provided with the motor, the motor output shaft penetrates through the support and extends to the left side of the support, the outer surface of the motor output shaft is fixedly connected with the external gear, the annular outer surface of the external gear is in meshed transmission connection with the transmission gear, the number of the transmission gears is three, the transmission gears are sleeved and rotated on the annular outer surface of the support through the second bearing, the three annular outer surface meshed transmission of the transmission gear is connected with the internal gear, the left outer surface of the internal gear is fixedly connected with the rotating wheels on the second support, and the rotating wheels contained in the first groove and the rotary mechanism are symmetrically distributed on one side of the second support far away from each other.

Preferably, the cleaning mechanism comprises a cleaning block, a first brush block and a second brush block, wherein a rotating rod is arranged between the first bracket and the second bracket, the left end and the right end of the rotating rod are respectively fixedly connected with the outer surfaces of rotating wheels on the first bracket and the second bracket, the outer surface of the lower end of the rotating rod is fixedly connected with a plurality of cleaning blocks, the cleaning blocks are distributed between adjacent fins, the outer surfaces of the left side and the right side of the cleaning blocks are fixedly connected with the first brush block and are respectively attached to the outer surfaces of the fins, the outer surface of the lower end of the cleaning block is fixedly connected with the second brush block, and the lower end surface of the second brush block is attached to the outer surface of the evaporating pipe.

Preferably, a groove III is formed in the cleaning block, a hose is arranged in the groove III, a first spray head is arranged on the outer surface of the hose, one end of the first spray head is communicated with the interior of the hose, the other end of the first spray head penetrates through the outer surface of the cleaning block and extends to be fixed outside, a second spray head is arranged on the lower end face of the hose, the upper end of the second spray head is communicated with the interior of the hose, and the lower end of the second spray head penetrates through the lower end face of the cleaning block and extends to the outer surface of the evaporating pipe and is attached to the outer surface of the evaporating pipe.

Preferably, a second groove is formed in the rotating rod, the second groove is communicated with the third groove, an air bag is arranged in the second groove, the lower end of the air bag is communicated with the hose, and a first magnet is arranged at the upper end of the air bag.

Preferably, the magnet II is connected with the inner part of the upper end of the outer surface of the fin in an embedded mode, the magnet II is magnetically attracted with the magnet I, and the rotating rod is not in contact with the fin.

Preferably, the outer surface annular equidistant distribution of fin has the wind hole two, motor output shaft left end cover is connected fixedly with the fan, and the fan is located the left side of external gear, wind hole one, wind hole two's position one-to-one, and the fan is located three between the support frame and not with the support frame contact.

Compared with the prior art, the invention has the beneficial effects that:

1. by adding the rotating mechanism and the cleaning mechanism in the workpiece, after dust is accumulated in the cleaning mechanism for a long time, the cleaning mechanism on the rotating rod can be driven to rotate by the rotating mechanism, and the brush blocks on the cleaning mechanism can effectively remove dust accumulated between fins and on the surface of the tube wall, so that the cleaning work of the fins is completed, the indoor air quality is improved, and the health of people is ensured;

2. the defrosting mechanism comprising the rotating mechanism, the cleaning mechanism, the magnet I and the magnet II is added in the workpiece, so that the rotating mechanism drives the rotating rod and the cleaning block on the rotating rod to rotate when frosting, when the rotating rod rotates above the fins, the magnet I in the air bag in the rotating rod and the magnet II arranged in the fins generate magnetic force adsorption, the magnet I in the air bag is attracted to the magnet II to move, the defrosting agent liquid containing alcohol in the air bag is extruded, the defrosting agent containing alcohol is extruded into a hose connected with the lower part of the air bag, and then the defrosting agent containing alcohol is atomized and sprayed on the outer surfaces of the fins and the evaporating pipes through a spray head on the hose, so that defrosting work can be effectively performed, and heat exchange work of the workpiece can be normally performed, thereby improving the working efficiency;

3. by adding the wind energy mechanism consisting of the motor, the fan, the first wind hole and the second wind hole in the workpiece, when the rotary mechanism operates, the output shaft of the motor drives the fan sleeved at the left end of the rotary mechanism to rotate, left wind energy is generated, wind generated by rotation of the fan circulates between the fins through the first wind hole and the second wind hole, and the flow speed of air between the fins is accelerated, so that the heat exchange efficiency of the evaporator and the air is accelerated, and the working efficiency of the evaporator is further improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is an overall structural view of the present invention;

FIG. 2 is a cross-sectional view of the overall structure of the present invention;

FIG. 3 is a structural view of the rotary mechanism of FIG. 2 according to the present invention;

FIG. 4 is a cross-sectional view of the cleaning mechanism of the present invention;

FIG. 5 is a cross-sectional view at A-A in FIG. 4 of the present invention;

fig. 6 is a cross-sectional view of the fin of fig. 2 in accordance with the present invention.

Reference numerals illustrate:

1. a first bracket; 2. a second bracket; 3. an evaporation tube; 4. a first groove; 5. a rotating rod; 6. a fin; 7. a rotation mechanism; 8. a cleaning mechanism;

21. a first wind hole; 22. a support frame; 23. a support;

51. a second groove; 52. an air bag; 53. a first magnet;

61. a second wind hole; 62. a second magnet;

71. a motor; 72. a fan; 73. a transmission gear; 74. an internal gear; 75. an external gear; 76. a rotating wheel; 77. a first bearing; 78. a second bearing;

81. cleaning the block; 82. brushing a first block; 83. brushing a second block; 84. a first spray head; 85. a second nozzle; 86. groove III; 87. and (3) a hose.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1 to 6, the present invention provides a technical solution:

the utility model provides a fin formula evaporimeter, includes evaporating pipe 3 and the support of the same design 1 and support two 2, the surface left side fixedly connected with support 1 of evaporating pipe 3, the surface right side fixedly connected with support two 2 of evaporating pipe 3, equidistance distributes between support 1 and the support two 2 has a plurality of groups fin 6, and fin 6 is used for increasing the area of contact of evaporimeter with the air, evaporating pipe 3 runs through fin 6 and extends to the outside of support 1 and support two 2, adjacent be provided with clearance mechanism 8 between the fin 6, the right side of support two 2 is provided with rotary mechanism 7, and clearance mechanism 8 is along with rotary mechanism 7's rotation and the operation, effectively clear up the dust between the fin 6, wind hole one 21 has been seted up to the right side surface of support two 2, the right side surface annular equidistance fixedly connected with support frame 22 of support frame 22, three groups the right side surface fixedly connected with support 23 of support frame 22, support 23 is used for placing fixed motor 71.

The rotating mechanism 7 comprises a motor 71, a fan 72, a transmission gear 73, an inner gear 74, an outer gear 75, a rotating wheel 76, a first bearing 77 and a second bearing 78, wherein a first groove 4 is formed in the lower end of the second support 2, the right side of the first groove 4 is in an opening shape, the rotating wheel 76 is sleeved and rotated on the annular outer surface of the second support 2 through the first groove 4 through the first bearing 77, the rotating wheel 76 can rotate through the first bearing 77, the right outer surface of the support 23 is fixedly provided with the motor 71, the motor 71 is a power source of the rotating mechanism 7, an output shaft of the motor 71 penetrates through the support 23 and extends to the left side of the support 23, the outer surface of the output shaft of the motor 71 is fixedly connected with the outer gear 75, the annular outer surface of the outer gear 75 is in meshed transmission connection with the transmission gear 73, the transmission gear 73 is in three groups, the annular outer surfaces of the transmission gear 73 are in meshed transmission connection with the inner gear 74 through the second bearing 78 and rotatably arranged on the annular outer surface of the support 22, the left outer surface of the inner gear 74 is fixedly connected with the rotating wheel 76 on the second support 2, and the rotating wheel 76 is driven by the first motor 71 to rotate the first support 7 and the second support 1 and the rotating mechanism 76 are arranged in a series of rotation mechanism 1 far away from one side of the rotating mechanism 1.

When the cleaning device works, the motor 71 is driven, the output shaft of the motor 71 drives the external gear 75 to rotate, the external gear 75 drives the three transmission gears 73 meshed with the external surface gears thereof to rotate, the internal gear 74 is driven to rotate because the annular external surface of the transmission gears 73 are meshed and connected with the internal gear 74, the internal gear 74 drives the rotating wheel 76 fixedly connected to the left side of the internal gear 74 to rotate, the whole rotating mechanism 7 is further enabled to operate, the rotating mechanism 7 drives the cleaning mechanism 8 positioned between the adjacent fins 6 to operate, and the cleaning mechanism 8 rotates around the fins 6, so that dust and pollutants attached to the external surface of the fins 6 are cleaned.

As an embodiment of the present invention, as shown in fig. 2 and 3, the cleaning mechanism 8 includes a cleaning block 81, a first brush block 82, and a second brush block 83, a rotating rod 5 is disposed between the first bracket 1 and the second bracket 2, left and right ends of the rotating rod 5 are fixedly connected with outer surfaces of the rotating wheels 76 on the first bracket 1 and the second bracket 2, the outer surfaces of lower ends of the rotating rod 5 are fixedly connected with a plurality of cleaning blocks 81, a plurality of cleaning blocks 81 are distributed between adjacent fins 6, the outer surfaces of left and right sides of the cleaning blocks 81 are fixedly connected with the first brush block 82, and are respectively attached to the outer surfaces of the fins 6, the outer surfaces of lower ends of the cleaning blocks 81 are fixedly connected with the second brush block 83, and the lower end surfaces of the second brush block 83 are attached to the outer surfaces of the evaporating pipes 3.

During operation, based on the above embodiment, the rotary mechanism 7 drives the cleaning mechanism 8 to operate, drives the rotary rod 5 fixedly connected between the rotary wheels 76 to rotate, and the rotary rod 5 rotates clockwise to the opening of the first side groove 4 and then rotates anticlockwise to the opening of the first side groove 4, the cleaning blocks 81 fixedly connected with the lower end of the rotary rod 5 clean the surfaces of the fins 6 through reciprocating motion, the cleaning blocks 81 are distributed between the adjacent fins 6, the outer surfaces and the lower ends of the cleaning blocks 81 are respectively connected with the first brush block 82 and the second brush block 83, and the cleaning blocks 81 drive the first brush block 82 and the second brush block 83 to perform friction scraping cleaning on the outer surfaces of the fins 6 and the evaporating pipes 3 along with the rotation of the rotary rod 5, so that dust adhesion is avoided, the phenomenon of air flow resistance increase is caused, and the working efficiency of the device is improved.

As an embodiment of the present invention, as shown in fig. 4 and 5, a third groove 86 is formed in the cleaning block 81, a hose 87 is disposed in the third groove 86, a first nozzle 84 is disposed on the outer surface of the hose 87, one end of the first nozzle 84 is communicated with the interior of the hose 87, the other end of the first nozzle penetrates through the outer surface of the cleaning block 81 and extends to be fixed outside, a second nozzle 85 is disposed on the lower end surface of the hose 87, the upper end of the second nozzle 85 is communicated with the interior of the hose 87, and the lower end of the second nozzle 85 penetrates through the lower end surface of the cleaning block 81 and extends to the outer surface of the evaporating pipe 3 and is attached to the outer surface of the evaporating pipe.

As an embodiment of the present invention, as shown in fig. 4 and 5, the second groove 51 is formed in the rotating rod 5, and the second groove 51 is communicated with the third groove 86, the air bag 52 is disposed in the second groove 51, the lower end of the air bag 52 is communicated with the hose 87, and the first magnet 53 is disposed at the upper end of the air bag 52.

During operation, based on the above embodiment, in the process that the rotating mechanism 7 drives the cleaning mechanism 8 to operate, the air bag 52 placed in the rotating rod 5 is filled with the defrosting agent containing alcohol, the rotating mechanism 7 drives the cleaning mechanism 8 and the rotating rod 5 to rotate, the defrosting agent containing alcohol in the rotating rod 5 enters the hose 87 connected below the air bag 52 through the air bag 52, the defrosting agent containing alcohol downwards flows under the pressing of the magnet I53 and the self gravity, and then is atomized and sprayed on the outer surfaces of the fins 6 and the evaporating pipes 3 through the first spray head 84 and the second spray head 85 arranged on the hose 87, meanwhile, because the defrosting agent containing alcohol has the characteristic of easy volatilization, the defrosting agent containing alcohol does not need to be solidified on the outer surfaces of the fins 6 and the evaporating pipes 3, and because the defrosting agent containing alcohol has the characteristic of defrosting, frost formed by condensation on the outer surfaces of the fins 6 and the evaporating pipes 3 can be eliminated, the defrosting effect is achieved, excessive accumulation of a frost layer is avoided, and the working efficiency of the evaporator is increased.

As an embodiment of the present invention, as shown in fig. 5 and 6, the second magnet 62 is embedded inside the upper end of the outer surface of the fin 6, and the second magnet 62 is magnetically attracted to the first magnet 53, so that the rotating rod 5 is not in contact with the fin 6.

When the rotary mechanism 7 drives the rotary rod 5 and the cleaning block 81 to rotate above the fins 6, the magnet I53 positioned in the air bag 52 is magnetically adsorbed with the magnet II 62 at the upper end of the fins 6, the magnetic adsorption force is larger than the centrifugal force when the rotary mechanism 7 drives the rotary rod 5 to rotate, the magnet I53 extrudes the air bag 52, the pressure in the air bag 52 is increased, the defrosting agent containing alcohol in the air bag moves to the magnet II 62, the defrosting agent containing alcohol is extruded into the hose 87 communicated with the lower part of the air bag 52, and then the defrosting agent is sprayed to the outer surfaces of the fins 6 and the evaporating pipes 3 for defrosting.

As an embodiment of the present invention, as shown in fig. 2 and 6, the second wind holes 61 are annularly and equidistantly distributed on the outer surface of the fin 6, the fan 72 is fixedly sleeved on the left end of the output shaft of the motor 71, the fan 72 is located on the left side of the external gear 75, the positions of the first wind holes 21 and the second wind holes 61 are in one-to-one correspondence, and the fan 72 is located between the three supporting frames 22 and is not in contact with the supporting frames 22.

When the rotary mechanism 7 works, the output shaft of the motor 71 drives the fan 72 sleeved at the left end of the rotary mechanism to rotate, left wind energy is generated, the fan 72 rotates to generate wind, the wind circulates between the fins 6 through the first wind hole 21 and the second wind hole 61, the flowing speed of air between the fins 6 is accelerated, the heat exchange speed of the evaporator and the air is accelerated, and the working efficiency of the evaporator is further improved.

Working principle: when in operation, the motor 71 is driven, the output shaft of the motor 71 drives the external gear 75 to rotate, the external gear 75 drives the three transmission gears 73 meshed with the external surface gears thereof to rotate, the annular external surface of the transmission gears 73 is meshed and connected with the internal gear 74, so that the internal gear 74 is driven to rotate, the internal gear 74 drives the rotating wheel 76 fixedly connected to the left side of the internal gear to rotate, thereby driving the rotating rod 5 to rotate, the rotating rod 5 rotates clockwise to the opening of the first groove 4 on one side and then rotates anticlockwise to the opening of the first groove 4 on the other side, a plurality of cleaning blocks 81 fixedly connected with the lower end of the rotating rod 5 are used for cleaning the surface of the fin 6 through reciprocating motion, the cleaning blocks 81 are distributed between the adjacent fins 6, a first brush block 82 and a second brush block 83 are fixedly arranged on the cleaning blocks 81, and further the first brush block 82 and the second brush block 83 are used for friction cleaning the surfaces of the fin 6 and the evaporating pipe 3, when the rotating mechanism 7 drives the rotating rod 5 and the cleaning block 81 to rotate above the fins 6, the magnet I53 positioned at the upper end inside the air bag 52 is magnetically adsorbed with the magnet II 62 positioned at the upper end inside the fins 6, the air bag 52 is filled with the defrosting agent containing alcohol, the magnet I53 extrudes the defrosting agent containing alcohol in the air bag 52 to move towards the magnet II 62, the defrosting agent containing alcohol is extruded into the hose 87 which is communicated with the air bag 52 and is arranged below, the defrosting agent containing alcohol is atomized and sprayed on the outer surfaces of the fins 6 and the evaporating pipes 3 through the first nozzle 84 and the second nozzle 85 which are arranged on the hose 87, meanwhile, because the defrosting agent containing alcohol has the characteristic of low solidifying point, the defrosting agent containing alcohol is not worried about being solidified on the outer surfaces of the fins 6 and the evaporating pipes 3, and because the defrosting agent containing alcohol has the characteristic of defrosting, the frost formed by condensation on the outer surfaces of the fins 6 and the evaporating pipes 3 can be eliminated, and the defrosting effect is achieved, so that the working efficiency of the evaporator is increased; while the rotating mechanism 7 is operated, the output shaft of the motor 71 drives the fan 72 sleeved at the left end of the motor to rotate, left wind energy is generated, the fan 72 rotates to generate wind, the wind circulates between the fins 6 through the first wind hole 21 and the second wind hole 61, the flowing speed of air between the fins 6 is accelerated, the heat exchange speed of the evaporator and the air is accelerated, and the working efficiency of the evaporator is further improved.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims

1. The utility model provides a fin type evaporator, includes evaporating pipe (3) and support one (1) and support two (2) of the same design of structure, its characterized in that: the novel evaporator comprises an evaporation tube (3), wherein a first support (1) is fixedly connected to the left side of the outer surface of the evaporation tube (3), a second support (2) is fixedly connected to the right side of the outer surface of the evaporation tube (3), a plurality of groups of fins (6) are distributed between the first support (1) and the second support (2) at equal intervals, the evaporation tube (3) penetrates through the fins (6) and extends to the outer parts of the first support (1) and the second support (2), a cleaning mechanism (8) is arranged between the adjacent fins (6), a rotating mechanism (7) is arranged on the right side of the second support (2), a first wind hole (21) is formed in the right side outer surface of the second support (2), a support frame (22) is fixedly connected to the right side outer surface of the second support frame (22) at equal intervals, and a support (23) is fixedly connected to the right side outer surface of the third support frame (22);

the rotating mechanism (7) comprises a motor (71), a fan (72), a transmission gear (73), an inner gear (74), an outer gear (75), a rotating wheel (76), a first bearing (77) and a second bearing (78), wherein a first groove (4) is formed in the lower end of the second support (2), the rotating wheel (76) is sleeved and rotated on the annular outer surface of the second support (2) through the first groove (4) through the first bearing (77), the right outer surface of the support (23) is fixedly provided with the motor (71), an output shaft of the motor (71) penetrates through the support (23) and extends to the left side of the support (23), the outer surface of the output shaft of the motor (71) is fixedly connected with the outer gear (75), the annular outer surface of the outer gear (75) is in meshed transmission connection with the transmission gear (73), the number of the transmission gears (73) is three, the annular outer surfaces of the three transmission gears (73) are in meshed transmission connection with the inner gear (74) through the second bearing (78) in a sleeved and rotated on the annular outer surface of the support (22), the annular outer surface of the transmission gear (74), the left outer surface of the inner gear (74) is fixedly connected with the rotating wheel (76) on the second support (2), the first groove (4) and the rotating wheel (76) contained in the rotating mechanism (7) are symmetrically distributed on one side of the first bracket (1) and one side of the second bracket (2) which are far away from each other;

the cleaning mechanism (8) comprises a cleaning block (81), a first brush block (82) and a second brush block (83), a rotating rod (5) is arranged between the first support (1) and the second support (2), the left end and the right end of the rotating rod (5) are fixedly connected with the outer surfaces of rotating wheels (76) on the first support (1) and the second support (2) respectively, a plurality of cleaning blocks (81) are fixedly connected with the outer surfaces of the lower ends of the rotating rod (5), the cleaning blocks (81) are distributed between the adjacent fins (6), the outer surfaces of the left side and the right side of the cleaning blocks (81) are fixedly connected with the first brush block (82) and are adhered to the outer surfaces of the fins (6), the outer surfaces of the lower ends of the cleaning blocks (81) are fixedly connected with the second brush block (83), and the lower end surfaces of the second brush block (83) are adhered to the outer surfaces of the evaporating pipes (3).

A groove III (86) is formed in the cleaning block (81), a hose (87) is arranged in the groove III (86), a first spray head (84) is arranged on the outer surface of the hose (87), one end of the first spray head (84) is communicated with the interior of the hose (87), the other end of the first spray head penetrates through the outer surface of the cleaning block (81) and extends to be fixed outside, a second spray head (85) is arranged on the lower end surface of the hose (87), the upper end of the second spray head (85) is communicated with the interior of the hose (87), and the lower end of the second spray head (85) penetrates through the lower end surface of the cleaning block (81) and extends to the outer surface of the evaporating pipe (3) to be adhered to the outer surface of the evaporating pipe;

a second groove (51) is formed in the rotating rod (5), the second groove (51) is communicated with a third groove (86), an air bag (52) is arranged in the second groove (51), the lower end of the air bag (52) is communicated with a hose (87), and a first magnet (53) is arranged at the upper end of the air bag (52);

the magnet II (62) is connected inside the upper end of the outer surface of the fin (6), the magnet II (62) and the magnet I (53) are magnetically attracted, and the rotating rod (5) is not in contact with the fin (6).

2. A fin evaporator as set forth in claim 1, wherein: the outer surface annular equidistance of fin (6) distributes has wind hole two (61), motor (71) output shaft left end cover is fixed with fan (72), and fan (72) are located the left side of external gear (75), wind hole one (21), the position one-to-one of wind hole two (61), and fan (72) are located three between support frame (22) and do not contact with support frame (22).