Energy-saving differential pressure quick-freezing air cooler

Abstract

The invention belongs to the technical field of air coolers, and particularly relates to an energy-saving differential pressure quick-freezing air cooler which comprises a main body unit, an air exhausting and adjusting unit, a driving unit and a flow guiding and rectifying unit, and an air outlet structure is arranged at the output end of the main body unit; the main body unit consists of an air cooler main body, an air outlet pipe fixed right above the air cooler main body, and a mounting frame fixed at an air outlet of the air outlet pipe; according to the device, the single motor-multi-gear transmission design of the driving unit is matched with the linkage annular ring and the pull rod structure of the airflow damping part, so that the choke blades of all channels can be driven to be synchronously opened and closed only by a single micro motor, the air volume of each group of channels is consistent, and the problem of multi-channel air volume deviation of traditional equipment is solved; meanwhile, the air volume can be accurately adjusted according to the quick-freezing requirement, energy loss caused when large flow is not needed is avoided, compared with a traditional air cooler with the fixed air volume, more energy is saved, the difference of material freezing time is reduced through multi-channel uniform air supply, and the product quality is effectively guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of air cooler technology, and particularly relates to an energy-saving differential pressure quick-freezing air cooler. Background Technology

[0002] In food processing, pharmaceutical cold chain, and other fields, differential pressure quick-freezing air coolers are core equipment for achieving rapid low-temperature freezing of materials. Through forced circulation of low-temperature airflow, they shorten the freezing time from the center to the surface of the material, maximizing the preservation of the food's freshness and nutritional components while preventing microbial growth and ensuring product quality. Especially in large-scale production scenarios, such as the quick-freezing of seafood in aquatic product processing plants and the pre-cooling of dough in baking workshops, the uniformity of airflow, the flexibility of air volume adjustment, and the energy efficiency of the air cooler directly determine production efficiency and cost control levels.

[0003] However, existing differential pressure quick-freezing air coolers still have significant shortcomings in practical applications, making them difficult to adapt to the demands of high-efficiency production: First, uneven airflow from multiple channels. Although most equipment is designed with multiple air supply channels to cover a large quick-freezing area, the air adjustment mechanism of each channel is independently controlled, which can easily lead to situations where some channels have excessive airflow while others have insufficient airflow, resulting in significant differences in the freezing speed of materials. For example, some shrimp from the same batch have already cracked while others have not yet reached the core freezing temperature. Second, poor synchronization of air adjustment and cumbersome operation. Traditional air adjustment requires adjusting the damper blades of each channel one by one, which is not only time-consuming and labor-intensive, but also makes it difficult to ensure that all blades open and close at the same angle. At the same time, the drive components lack effective protection, and moisture and dust in the workshop can easily penetrate the gear transmission structure, causing air adjustment to jam or even damage to components. Third, turbulent airflow affects the quick-freezing effect. After the cold air is discharged from the air outlet, it is easy to form eddies, with local wind speeds being too high or too low, further aggravating the problem of uneven freezing. Moreover, excess airflow cannot be adjusted as needed, resulting in energy waste. Summary of the Invention

[0004] The purpose of this invention is to provide an energy-saving differential pressure quick-freezing air cooler to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An energy-saving differential pressure quick-freezing air cooler includes a main unit, an exhaust and air-regulating unit, a drive unit, and a flow guiding and rectifying unit. The output end of the main unit is provided with an air outlet structure.

[0007] The main unit consists of a cooler body, an air outlet pipe fixed directly above the cooler body, and a mounting frame fixed at the exhaust port of the air outlet pipe.

[0008] The exhaust and air conditioning unit includes an exhaust power component mounted on the mounting frame and an airflow damping component located outside the exhaust power component. The exhaust power component consists of multiple axial flow fans. The airflow damping component is composed of a mounting pipe, a central pipe, a fixed rod, wind-blocking blades, a rotating shaft, a tie rod, and a linkage ring. The drive unit consists of a fixed block, a rotating rod, a first bevel gear, a second bevel gear, and a micro motor, used to drive the airflow damping component to operate.

[0009] The flow guiding and rectifying unit consists of a sleeve, a grid flow guide plate, and a honeycomb flow equalization plate, and is located on the outside of the airflow damping component.

[0010] Preferably, the mounting frame has multiple evenly distributed circular holes, an axial flow fan is fixedly installed at the inner side of each circular hole, and an installation pipe is fixed at the outer side of each circular hole. The central pipe is coaxially located at the axis of the installation pipe, and multiple fixing rods are fixed at both ends of the central pipe. The other end of the fixing rod is fixedly connected to the circumferential wall of the installation pipe.

[0011] Preferably, the wind-blocking blades are fan-shaped and there are multiple blades. Each wind-blocking blade has a rotating shaft fixed on both its inner and outer sides. The linkage ring is sleeved on the outside of the central tube. Each rotating shaft on the outside is rotatably connected to a pull rod. The other end of the pull rod is rotatably engaged with the linkage ring to form a synchronous linkage structure of the wind-blocking blades.

[0012] Preferably, a fixing seat is fixed in the middle of the outer circumference of the central tube, and multiple bushings are installed on the inner circumference of the mounting tube and the outer circumference of the fixing seat. The end of the rotating shaft away from the wind-blocking blade is inserted into the corresponding bushing and rotates with the bushing.

[0013] Preferably, there are two fixing blocks, which are symmetrically fixed to the outer side wall of the mounting frame. Each fixing block has a bearing seat fixed to its inner side. The two ends of the rotating rod are respectively rotatably installed in the two bearing seats. The micro motor is fixed to the outer side wall of one of the fixing blocks, and the output shaft of the micro motor is coaxially fixedly connected to the rotating rod.

[0014] Preferably, a plurality of bevel gears are coaxially fixed on the rotating rod along its length. The number of bevel gears is the same as the number of circular holes on the mounting frame. Each bevel gear has a bevel gear meshing around its circumference. The bevel gear is coaxially fixedly connected to one of the rotating shafts of the airflow damping component in the corresponding circular hole.

[0015] Preferably, the drive unit further includes:

[0016] The protective cover is L-shaped and fixedly installed between two fixed blocks, covering the rotating rod, bevel gear one and bevel gear two.

[0017] Preferably, the sleeve is located on the outside of the installation pipe, and the grid guide plate and the honeycomb flow equalization plate are both fixed in the inner cavity of the sleeve. The grid guide plate is close to the inner side of the sleeve, and the honeycomb flow equalization plate is close to the outer side of the sleeve. The two are arranged back and forth along the axial direction of the sleeve.

[0018] Preferably, the end of the sleeve near the installation pipe is fixedly connected to the installation pipe via a flange, and the connection between the sleeve and the installation pipe is provided with a sealing structure.

[0019] Preferably, a controller is provided on the periphery of the main body of the air cooler, and a control module is provided inside the controller. The control module is connected to the micro motor and the axial flow fan respectively.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. Achieve precise multi-channel synchronous airflow adjustment, significantly improving energy efficiency and freezing uniformity: This device utilizes a single-motor, multi-gear transmission design in the drive unit, combined with the linkage ring and pull rod structure of the airflow damping component. Only a single micro-motor is needed to drive the wind-blocking blades of all channels to open and close synchronously, ensuring consistent airflow in each channel and solving the problem of airflow deviation in traditional equipment. At the same time, the airflow can be precisely adjusted according to the quick-freezing requirements, avoiding energy loss when a large flow rate is not needed. It is more energy-efficient than traditional fixed-airflow evaporative coolers, and the uniform airflow from multiple channels reduces the difference in material freezing time, effectively ensuring product quality.

[0022] 2. Optimize airflow rectification and component protection to improve quick-freezing efficiency and equipment durability: Relying on the dual design of the grid guide plate and honeycomb flow equalization plate of the airflow guiding and rectification unit, the uniformity of the output cross-section wind speed is greatly improved after the cold air is initially guided and then evenly distributed, avoiding uneven freezing caused by eddies; at the same time, the L-shaped protective cover covers the core components of the drive mechanism, isolating the influence of workshop moisture and dust on gear transmission, reducing component wear, and with the sealing structure of each connection, further reducing the cold air leakage rate, extending the average service life of the equipment, and reducing operation and maintenance costs and downtime. Attached Figure Description

[0023] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a partial structural diagram of the exhaust mechanism in this invention;

[0026] Figure 3 This is a schematic diagram of the overall structure of the exhaust mechanism in this invention;

[0027] Figure 4 This is a schematic diagram of the airflow damping mechanism in this invention;

[0028] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle;

[0029] Figure 6 This is a schematic diagram of the current guiding and rectifying unit in this invention;

[0030] Figure 7 This is a schematic diagram of the drive mechanism in this invention;

[0031] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point B.

[0032] The markings in the diagram are as follows:

[0033] 1. Air cooler body; 2. Air outlet duct; 3. Mounting frame; 4. Axial flow fan; 5. Mounting pipe; 6. Central duct; 7. Fixing rod; 8. Fixing base; 9. Wind baffle blades; 10. Rotating shaft; 11. Tie rod; 12. Linkage ring; 13. Fixing block; 14. Rotating rod; 15. Bevel gear one; 16. Bevel gear two; 17. Micro motor; 18. Protective cover; 19. Pipe sleeve; 20. Grid guide plate; 21. Honeycomb flow distribution plate. Detailed Implementation

[0034] This application provides an energy-saving differential pressure quick-freezing air cooler, which effectively solves the problems of large air volume deviation in multiple channels, poor air adjustment synchronization, uneven freezing caused by airflow turbulence, insufficient protection of drive components and high energy consumption in traditional differential pressure quick-freezing air coolers. It meets the high requirements of food processing, pharmaceutical cold chain and other fields for quick-freezing uniformity, energy saving and equipment durability.

[0035] like Figure 1 - Figure 8 As shown, the overall concept of the embodiments of this application is as follows:

[0036] To address the problems existing in the prior art, this invention provides an energy-saving differential pressure quick-freezing air cooler, aiming to solve the shortcomings of traditional equipment such as uneven airflow adjustment in multiple channels, airflow eddies, easy component damage, and energy waste. Through a combination design of stable load-bearing main unit + synchronous airflow control of exhaust air adjustment unit + single motor multi-gear transmission of drive unit + dual flow equalization of flow guiding and rectifying unit, the device improves the adaptability to different quick-freezing materials, quick-freezing uniformity, energy saving and component protection capabilities, meeting the high requirements of large-scale production for quick-freezing efficiency, product quality and cost control, while ensuring the long-term stability and safety of the equipment.

[0037] The structure and connection relationships of each part of this invention are as follows:

[0038] I. Main Unit

[0039] 1. Main body of the air cooler

[0040] Structural form: It has a rectangular box structure, which integrates a refrigeration compressor, evaporator and cold air circulation components. The top is equipped with a flange interface that is compatible with the air outlet duct 2. The outer wall has a reserved mounting slot for the controller. The outer shell is made of heat insulation material.

[0041] Installation location: Place horizontally on the workshop floor, and adjust the levelness using the adjustable anchor bolts at the bottom to avoid affecting the operation of internal components due to ground tilt;

[0042] Connection relationship: The top flange interface is rigidly fixed to the lower end of the air outlet duct 2, providing a low-temperature cold air source for the entire device. The controller in the controller mounting slot is connected to the subsequent drive unit and exhaust power components to achieve coordinated control.

[0043] 2. Air outlet duct 2

[0044] Structural form: It is a cylindrical pipe with a polyurethane insulation layer on the inner wall. Both ends are equipped with flanges. The pipe diameter is adapted to the air outlet diameter of the main body 1 of the air cooler and the air inlet requirements of the mounting frame 3.

[0045] Installation location: Vertically connected between the top of the air cooler body 1 and the bottom of the mounting frame 3, arranged vertically;

[0046] Connection relationship: The lower flange is sealed and fixed to the top flange of the air cooler body 1, and the upper flange is welded or bolted to the bottom of the mounting frame 3 to form a closed channel for cold air transportation, reducing the loss of cold energy during transportation.

[0047] 3. Installation Frame 3

[0048] Structural form: It has a rectangular frame structure and is made of 304 stainless steel. Multiple evenly distributed circular holes are opened on the frame. The inner edge of each circular hole is equipped with a mounting flange for the axial flow fan 4, and the outer edge is equipped with a fixing interface for the mounting pipe 5. The four corners of the frame are equipped with reinforcing ribs.

[0049] Installation position: Horizontally fixed to the upper end of the air outlet pipe 2, connected to the inner cavity of the air outlet pipe 2, and the whole is located directly above the quick-freezing area;

[0050] Connection relationship: The bottom is fixed to the upper end of the air outlet pipe 2, the axial flow fan 4 is installed inside the round hole, and the pipe 5 is fixed on the outside, forming multiple sets of parallel exhaust-adjustment-rectification channels, providing the installation foundation for subsequent functional units.

[0051] II. Exhaust and Air Adjustment Unit

[0052] 1. Axial flow fan 4

[0053] Structural form: It has a circular centrifugal fan structure. The outer shell is equipped with mounting ears that are compatible with the 3-hole flange of the mounting frame. The motor power is adapted to the single-channel air volume requirement. The fan blades are made of low-temperature resistant ABS material.

[0054] Installation location: Each round hole is located on the inner side and is fixed to the round hole flange of the mounting frame 3 with bolts, with the fan blades facing the mounting pipe 5;

[0055] Connection relationship: After being powered on, airflow is generated, which accelerates the cold air delivered by the main body 1 of the air cooler to the air outlet duct 2, so that it quickly enters the installation pipe 5 and provides sufficient airflow speed for differential pressure quick-freezing.

[0056] 2. Installation pipe 5 and center pipe 6

[0057] Structural form: The mounting pipe 5 is a cylindrical pipe, and the material is the same as that of the mounting frame 3. One end is equipped with a flange that is compatible with the outer interface of the circular hole of the mounting frame 3, and the other end is equipped with a flange that is connected to the pipe sleeve 19; the central pipe 6 is a cylindrical hollow structure, and multiple fixing rods 7 are symmetrically fixed at both the front and rear ends in a radial distribution.

[0058] Installation position: The mounting tube 5 is fixed to the outside of the round hole of the mounting frame 3 through the flange, and the central tube 6 is coaxially located in the middle of the inner cavity of the mounting tube 5;

[0059] Connection relationship: The end of the fixing rod 7 away from the central tube 6 is welded and fixed to the inner circumference of the mounting tube 5, forming a stable cylindrical structure of central tube 6-fixing rod 7-mounting tube 5, which provides a mounting carrier for the airflow damping component and ensures that the airflow flows evenly in the mounting tube 5.

[0060] 3. Fixed base 8 and wind-blocking blades 9

[0061] Structural form: The fixed base 8 is a ring structure, made of stainless steel, and coaxially welded to the middle of the outer circumference of the central tube 6; the wind-blocking blade 9 is a fan-shaped thin plate, made of lightweight aluminum alloy, and the inner and outer edges are fixed with rotating shafts 10 by bolts.

[0062] Installation position: Multiple bushing mounting holes are provided on the inner circumference of the mounting pipe 5 and the outer circumference of the fixing seat 8. The bushings are fixed in the holes, and the end of the rotating shaft 10 away from the wind-blocking blade 9 is inserted into the corresponding bushing.

[0063] Connection relationship: The rotating shaft 10 and the bushing are fitted with a clearance to ensure that the wind-blocking blade 9 can be flexibly rotated around the rotating shaft 10. The fixed seat 8 provides additional support for the rotating shaft 10 through the inner bushing to prevent the wind-blocking blade 9 from shifting due to uneven force when it rotates.

[0064] 4. Rotating shaft 10, pull rod 11 and linkage ring 12

[0065] Structural features: The rotating shaft 10 is a short cylindrical shaft made of stainless steel; the pull rod 11 is long and narrow, with a shaft hole at one end that is coaxially fixed with the rotating shaft 10, and a shaft pin at the other end that mates with the linkage ring 12; the linkage ring 12 is a circular ring with a clearance fit between its inner wall and the outer circumference of the fixed seat 8, and is made of wear-resistant PA66 plastic.

[0066] Installation position: The rotating shaft 10 is fixed on both sides of the wind-blocking blade 9. One end of the pull rod 11 is sleeved on the rotating shaft 10 and limited by the snap ring. The other end is rotatably connected to the linkage ring 12 through the shaft pin.

[0067] Connection relationship: When a single rotating shaft 10 rotates, it drives the linkage ring 12 to rotate around the axis of the central tube 6 through the pull rod 11. The linkage ring 12 then pulls all rotating shafts 10 to rotate synchronously through other pull rods 11, ultimately realizing the synchronous opening and closing of all wind-blocking blades 9 and precisely adjusting the air volume in the installation pipe 5.

[0068] III. Drive Unit

[0069] 1. Fixed block 13 and rotating rod 14

[0070] Structural form: The fixed block 13 is rectangular, there are two of them and they are symmetrically distributed. The material is stainless steel and the inner wall is welded with a deep groove ball bearing seat; the rotating rod 14 is a cylindrical long shaft with chrome-plated anti-rust treatment on the surface and journals at both ends that are adapted to the inner ring of the bearing seat.

[0071] Installation position: The two fixing blocks 13 are symmetrically fixed to the outer side wall of the mounting frame 3 by bolts, and the two ends of the rotating rod 14 are respectively inserted into the bearing seats of the two fixing blocks 13;

[0072] Connection relationship: The bearing housing provides radial support for the rotating rod 14, ensuring that the rotating rod 14 has no radial runout when rotating, and the rotating rod 14 can rotate flexibly around its own axis, providing a stable carrier for subsequent power transmission.

[0073] 2. Bevel gear 15, bevel gear 2 16 and micro motor 17

[0074] Structural features: Both bevel gear 15 and bevel gear 16 are straight bevel gears; micro motor 17 is a servo motor, and the output shaft is equipped with a coupling adapted to the rotating rod 14;

[0075] Installation position: Bevel gear 15 is fixed coaxially along the length of rotating rod 14, and each bevel gear 15 meshes with a bevel gear 16; micro motor 17 is fixed to the outer wall of one of the fixing blocks 13 by bolts, and the output shaft is fixedly connected to one end of rotating rod 14 by a coupling;

[0076] Connection relationship: After the micro motor 17 is powered on, the output shaft drives the rotating rod 14 to rotate, and the rotating rod 14 drives all the bevel gears 15 to rotate synchronously. The bevel gears 15 drive the bevel gears 16 to rotate through meshing transmission. The rotating shaft of the bevel gears 16 is coaxially fixed with the uppermost rotating shaft 10 in the airflow damping component in the corresponding circular hole, thereby transmitting power to the rotating shaft 10 to realize the driving adjustment of the wind-blocking blades 9.

[0077] 3. Protective cover 18

[0078] Structural form: It has an L-shaped plate structure, is made of stainless steel, has flanged edges, and has a powder-coated surface.

[0079] Installation position: Fixed between two fixing blocks 13 by bolts, completely covering the area above the rotating rod 14, bevel gear one 15 and bevel gear two 16;

[0080] Connection relationship: The connection between the protective cover 18 and the fixing block 13 is equipped with a rubber gasket, which ensures a sealed installation and avoids wear caused by hard contact; its L-shaped structure can fit the shape of the mounting frame 3 and the fixing block 13 without taking up extra space, while effectively blocking moisture and dust in the workshop from entering the drive components and protecting the gear transmission structure.

[0081] IV. Flow guiding and rectifying unit

[0082] 1. Pipe sleeve 19

[0083] Structural form: It is a cylindrical pipe made of stainless steel. One end is equipped with a flange that is compatible with the flange of the installation pipe 5, and the other end is open. The inner cavity is equipped with fixing slots for the grid guide plate 20 and the honeycomb flow equalization plate 21.

[0084] Installation location: It is fixedly connected to the outer end of the installation pipe 5 via a flange, and the flange connection is equipped with a low-temperature resistant rubber gasket;

[0085] Connection relationship: The sleeve 19 and the installation pipe 5 are sealed together to prevent cold air from leaking from the connection gap, while providing a stable installation space for the grid guide plate 20 and the honeycomb flow equalization plate 21 to ensure the airflow rectification effect.

[0086] 2. Grid baffle 20 and honeycomb baffle 21

[0087] Structural form: The grid guide plate 20 is a rectangular plate with multiple sets of parallel flow guide grids, and is made of stainless steel; the honeycomb flow equalizer 21 is a rectangular plate with multiple evenly distributed regular hexagonal honeycomb holes, and is made of the same material as the grid guide plate 20.

[0088] Installation position: Both are fixed by the slot in the inner cavity of the sleeve 19. The grid guide plate 20 is close to the inner side of the sleeve 19, and the honeycomb flow equalization plate 21 is close to the outer side of the sleeve 19. They are arranged back and forth along the axis of the sleeve 19.

[0089] Connection relationship: After the cold air enters the sleeve 19 from the installation pipe 5, it first passes through the guide grid of the grid guide plate 20 to initially sort the airflow direction and eliminate the eddies formed during the airflow transportation process; then it passes through the honeycomb holes of the honeycomb flow equalization plate 21 for secondary uniform distribution, so that the wind speed and temperature of the cold air are evenly distributed at the output section of the sleeve 19, and finally the stable and uniform airflow acts on the material to be quick-frozen.

[0090] The working principle of this device is as follows:

[0091] This device is based on multi-channel synchronous air regulation and dual airflow rectification. Through the coordinated operation of various units, it achieves energy-saving and efficient differential pressure quick-freezing. The specific process is as follows:

[0092] 1. Equipment preparation and initial state: Start the main body 1 of the air cooler, and low-temperature cold air enters the air outlet duct 2; at the same time, turn on the axial flow fan 4, and the axial flow fan 4 accelerates the delivery of cold air to the round hole channel of the mounting frame 3; in the initial state, the wind baffle 9 is in a half-open position, and the air volume requirement can be preset according to the type of material to be quick-frozen, and the rotation parameters of the micro motor 17 can be set through the controller.

[0093] 2. Drive transmission and air volume adjustment: Start the micro motor 17, and the output shaft of the micro motor 17 drives the rotating rod 14 to rotate; multiple bevel gears 15 on the rotating rod 14 rotate synchronously with the rotating rod 14, and each bevel gear 15 meshes with the corresponding bevel gear 16, thereby driving the rotating shaft 10 at the top of each channel to rotate; the pull rod 11 on the rotating shaft 10 rotates together, and the pull rod 11 pulls the linkage ring 12 to rotate around the axis of the central tube 6; the linkage ring 12 drives the rotating shaft 10 of all the wind-blocking blades 9 to rotate synchronously through other pull rods 11, so as to realize the synchronous opening and closing of all the wind-blocking blades 9. When the blade opening increases, the air volume increases, and when the opening decreases, the air volume decreases, until the preset air volume is reached and the micro motor 17 stops running.

[0094] 3. Airflow rectification and quick-freezing operation: After being adjusted by the wind-blocking blades 9, the cold air enters the sleeve 19 and first passes through the grid guide plate 20 to initially straighten the airflow direction and eliminate the eddies formed during the cold air delivery process. Then, the cold air passes through the honeycomb flow equalization plate 21 and is evenly distributed through the honeycomb holes. It is then blown onto the material to be quick-frozen with uniform wind speed and temperature to achieve rapid and uniform freezing. Throughout the process, the protective cover 18 prevents water vapor and dust from entering the drive mechanism to avoid damage to the transmission components. The sealing structure prevents cold air from leaking from the connection between the installation pipe 5 and the sleeve 19.

[0095] 4. Equipment shutdown and reset: After the quick-freezing operation is completed, first turn off the main body of the cold air blower 1 and the axial flow fan 4, then control the micro motor 17 to rotate in reverse through the controller, so as to drive the wind baffle blade 9 to reset to the closed state to prevent external impurities from entering the equipment; finally, cut off the power supply to complete one quick-freezing process.

[0096] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An energy-saving differential speed freezing air cooler, comprising a main unit, an exhaust air regulating unit, a driving unit and a flow guiding and rectifying unit, the output end of the main unit being provided with an air outlet structure, characterized in that the main unit is composed of an air cooler main body (1), an air outlet pipe (2) fixed above the air cooler main body (1), and a mounting frame (3) fixed at the exhaust air outlet of the air outlet pipe (2). The exhaust air regulating unit comprises exhaust air power components arranged on the mounting frame (3) and airflow damping components arranged outside the exhaust air power components, wherein the exhaust air power components are a plurality of axial flow fans (4), and the airflow damping components are composed of a mounting pipe (5), a center pipe (6), a fixed rod (7), a wind resistance blade (9), a rotating shaft (10), a pull rod (11) and a linkage annular ring (12); the driving unit is composed of a fixed block (13), a rotating rod (14), a bevel gear I (15), a bevel gear II (16) and a micro motor (17) and is used for driving the airflow damping components to act. The flow guiding and rectifying unit is composed of a pipe sleeve (19), a grid flow guide plate (20) and a honeycomb flow equalizing plate (21) and is arranged outside the airflow damping components. A plurality of uniformly distributed round holes are formed in the mounting frame (3), each of the round holes is fixedly installed with an axial flow fan (4) at an inner side position, and each of the round holes is fixedly provided with a mounting pipe (5) at an outer side position, the center pipe (6) is coaxially arranged at the axis of the mounting pipe (5), a plurality of fixed rods (7) are fixedly connected to the front and rear ends of the center pipe (6), and the other ends of the fixed rods (7) are fixedly connected to the circumferential wall of the mounting pipe (5).

2. The energy-saving differential speed freezing air fan according to claim 1, characterized in that, The wind resistance blades (9) are in the shape of a sector and are provided in a plurality of numbers, the inner and outer sides of each of the wind resistance blades (9) are fixedly provided with a rotating shaft (10), the linkage annular ring (12) is sleeved outside the center pipe (6), the pull rod (11) is rotatably connected to the other end of each of the rotating shafts (10) outside, the other end of the pull rod (11) is rotatably connected to the linkage annular ring (12), and a synchronous linkage structure of the wind resistance blades (9) is formed.

3. The energy-saving differential speed freezing air fan according to claim 2, characterized in that, The center pipe (6) is fixedly provided with a fixed seat (8) at the middle of the circumferential outer wall, a plurality of shaft sleeves are correspondingly arranged on the circumferential inner wall of the mounting pipe (5) and the circumferential outer wall of the fixed seat (8), and the other end of the rotating shaft (10) away from the wind resistance blade (9) is inserted into the corresponding shaft sleeve and is rotatably connected to the shaft sleeve.

4. The energy-saving differential speed freezing air fan according to claim 3, characterized in that, The fixed blocks (13) are provided in two numbers and are symmetrically fixed to the outer side walls of the mounting frame (3), the inner side of each of the fixed blocks (13) is fixedly provided with a bearing seat, the two ends of the rotating rod (14) are rotatably arranged in the two bearing seats, respectively, the micro motor (17) is fixedly arranged on the outer side wall of one of the fixed blocks (13), and the output shaft of the micro motor (17) is coaxially fixedly connected to the rotating rod (14).

5. The energy-saving differential speed freezing air fan according to claim 1, characterized in that, ​ 6. The energy-saving differential speed freezing air fan according to claim 5, characterized in that, A plurality of bevel gears one (15) are fixed coaxially along the length direction on the rotating rod (14), the number of the bevel gears one (15) is consistent with the number of the round holes on the mounting frame (3), the circumferential side of each bevel gear one (15) is engaged with a bevel gear two (16), the bevel gear two (16) is fixedly connected coaxially with one of the rotating shafts (10) in the airflow damping components in the corresponding round hole.

7. The energy-saving differential speed freezing air fan according to claim 6, characterized in that, The driving unit further comprises: A protective cover (18) is fixedly installed between the two fixed blocks (13) and covers the rotating rod (14), the bevel gears one (15) and the bevel gears two (16).

8. The energy-saving differential speed freezing air blower according to claim 1, wherein, The pipe sleeve (19) is arranged outside the mounting pipe (5), the grid flow guide plate (20) and the honeycomb flow uniform plate (21) are fixed in the inner cavity of the pipe sleeve (19), the grid flow guide plate (20) is close to the inner side of the pipe sleeve (19), the honeycomb flow uniform plate (21) is close to the outer side of the pipe sleeve (19), and the two are arranged forward and backward along the axial direction of the pipe sleeve (19).

9. The energy-saving differential speed freezing air fan according to claim 8, characterized in that, One end of the pipe sleeve (19) close to the mounting pipe (5) is fixedly connected with the mounting pipe (5) through a flange plate, and a sealing structure is arranged at the connecting part of the pipe sleeve (19) and the mounting pipe (5).

10. The energy-saving differential speed freezing air blower according to claim 1, wherein, A controller is arranged on the circumferential side of the air cooler main body (1), a control module is arranged in the controller, and the control module is signal connected with the micro motor (17) and the axial flow fan (4).

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