System for controlling temperature uniformity and reducing energy consumption of evaporation fan of air-cooled refrigerator

Abstract

The utility model relates to refrigeration technology, and provides a system for controlling temperature uniformity and reducing energy consumption of an evaporation fan of an air-cooled refrigerator, which comprises a box body, a refrigeration system, a temperature control system, a frequency conversion system, a defrosting system and a central processor are arranged in the box body, and the refrigeration system comprises the evaporation fan, an evaporator, a compressor and a condensing unit. The refrigerating system is used for reducing the temperature in the box body to refrigerate the box body, the temperature control system comprises a temperature sensor and is used for controlling the temperature in the box body, and the frequency conversion system comprises a first frequency converter and a second frequency converter and is used for controlling the power supply frequency of the compressor and the evaporation fan. The variable frequency control function of the evaporation fan is achieved through the second frequency converter, so that the fan which operates at a constant high speed originally can flexibly adjust the rotating speed according to actual requirements, and the overall performance and practicability of equipment are remarkably improved while energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration, and in particular to a system for controlling temperature uniformity and reducing energy consumption of an evaporating fan of an air-cooled refrigerator. Background Art

[0002] With the continuous development of the commercial refrigerator industry, the requirements for commercial refrigerators in all aspects are getting higher and higher. Not only the temperature uniformity of the refrigeration system of commercial refrigerators is required to be good, but also the energy consumption of refrigerators is required to be higher and higher. In order to meet the user's requirements for temperature uniformity of refrigerators, more reasonably achieve the energy consumption requirements of a refrigerator, and at the same time meet the refrigeration reliability of refrigerators, prevent the air-cooled evaporator from freezing, and finally meet the user's purpose of use.

[0003] The utility model aims to provide a method for controlling the temperature uniformity of the evaporating fan of the air-cooled refrigerator, reducing the energy consumption, and ensuring that the frost on the evaporator can be removed normally. Utility Model Content

[0004] The purpose of the utility model is to provide a method for controlling the temperature uniformity of the evaporating fan of the air-cooled freezer, reducing energy consumption, and ensuring that the frost on the evaporator can be removed normally. The utility model adopts the following technical solutions:

[0005] A system for controlling temperature uniformity and reducing energy consumption of an evaporating fan of an air-cooled freezer, comprising a box body, in which a refrigeration system, a temperature control system, a frequency conversion system, a defrosting system and a central processor are installed;

[0006] The refrigeration system includes an evaporator fan, an evaporator, a compressor, and a condensing unit, and the refrigeration system is used to reduce the temperature inside the box to cool the box;

[0007] The temperature control system includes a temperature sensor, and the temperature control system is used to control the temperature inside the box;

[0008] The frequency conversion system includes a first frequency converter and a second frequency converter, and the frequency conversion system is used to control the power supply frequency of the compressor and the evaporating fan;

[0009] The defrost system comprises a timing module, and the defrost system is used for defrosting the evaporator.

[0010] The central processor is used to switch different systems to achieve the functions of refrigeration, defrosting and frequency conversion for the cabinet.

[0011] The first frequency converter, the second frequency converter, the timing module, and the temperature sensor are all electrically connected to the central processor, the first frequency converter is electrically connected to the compressor, and the second frequency converter is electrically connected to the evaporating fan.

[0012] As described above, a system for controlling temperature uniformity and reducing energy consumption of an air-cooled refrigerator using an evaporative fan is arranged on one side of an evaporator and is tilted upward. The evaporative fan includes a fan casing, a motor, fan blades and a fan cover. The motor is installed in the fan casing, and the rotor of the motor is fixedly connected to the fan blades. A fan cover is installed on one side of the fan casing. The outer edges of the fan blades are bent outwards, and the fan blades can transport the cut air to the surroundings when rotating, thereby increasing the air supply area of ​​the fan blades.

[0013] As described above, in a system for controlling temperature uniformity and reducing energy consumption of an evaporative fan of an air-cooled refrigerator, the fan blade extends straightly from the root to the tip along the length direction, and the outer edge of the fan blade forms a fillet of one degree compared with the straight part of the fan blade.

[0014] As described above, a system for controlling temperature uniformity and reducing energy consumption of an evaporator fan in an air-cooled refrigerator has a bracket installed at the bottom of the evaporator fan, and the bracket includes a telescopic mechanism. The evaporator fan can adjust the distance from the evaporator through the telescopic mechanism of the bracket.

[0015] As described above, a system for controlling temperature uniformity and reducing energy consumption by an evaporator fan of an air-cooled refrigerator, the evaporator and the evaporator fan are both installed on the top of the inner cavity of the cabinet, a gap is provided between the evaporator and the inner cavity side wall of the cabinet, and air circulation is sucked in from the top of the evaporator and discharged from the back of the evaporator.

[0016] In the system for controlling temperature uniformity and reducing energy consumption by an evaporator fan of an air-cooled refrigerator as described above, the top edge of the top of the cabinet on which the evaporator is installed is a rounded edge to facilitate the downward flow of cold air.

[0017] As described above, a system for controlling temperature uniformity and reducing energy consumption by an evaporative fan of an air-cooled refrigerator, the temperature control system includes a digital display thermostat, the digital display thermostat is electrically connected to a central processor, the digital display thermostat is used to display and set the temperature inside the cabinet, the temperature sensor is installed in the central area of ​​the cabinet, and the temperature sensor is used to accurately sense the temperature inside the cabinet.

[0018] As described above, in a system for controlling temperature uniformity and reducing energy consumption of an evaporative fan of an air-cooled freezer, the temperature sensor transmits the monitored temperature data inside the cabinet to a central processor, and the central processor transmits signals to a first inverter and a second inverter. After receiving the signals, the first inverter and the second inverter control the operation of the compressor and the evaporative fan.

[0019] In a system for controlling temperature uniformity and reducing energy consumption of an evaporating fan of an air-cooled freezer as described above, the timing module is electrically connected to a central processor, a timing program is provided in the timing module, and once the set time is reached, the timing module transmits a signal to the central processor, and the central processor controls the first inverter to adjust the compressor to a low-speed operation mode to assist the defrosting process.

[0020] Implementing the embodiments of the utility model has the following beneficial effects:

[0021] 1. In the present invention, the evaporating fan realizes the frequency conversion control function through the second frequency converter, so that the fan which originally runs at a constant high speed can flexibly adjust the speed according to actual needs, thereby significantly improving the overall performance and practicality of the equipment while reducing energy consumption.

[0022] 2. In the utility model, in the operation system of the freezer, the evaporating fan and the compressor work together to optimize the energy efficiency ratio of the entire system. First, in the cooling process or the high-efficiency refrigeration stage, the compressor frequency conversion can adjust its own operating frequency and refrigeration output according to the load change. At the same time, the evaporating fan adopts a high speed to cooperate with the compressor to operate, enhance the air flow rate and heat exchange effect, quickly reduce the internal temperature of the box, and achieve efficient temperature drawing. Secondly, when the box temperature is stable or the compressor is stopped and in standby state, the first inverter will control the compressor according to the preset temperature and real-time temperature sensor information. The inverter controls the start and stop and output power precisely, while the evaporator fan switches to a lower speed gear and continues to circulate the air in the cabinet with a moderate air volume to ensure uniform temperature distribution and further save energy consumption when the compressor is not working. Finally, when the freezer is defrosting, the first inverter controls the compressor to adjust to a low-speed operation mode to assist the defrosting process. At the same time, the evaporator fan will start at a low speed, which can not only reduce unnecessary energy consumption, but also help accelerate the melting and shedding of the frost layer on the evaporator surface with the help of moderate airflow, ensuring that the evaporator restores good heat transfer efficiency and prepares for the next refrigeration cycle.

[0023] 3. In the utility model, the outer edge of the fan blade is bent outward to increase the air supply area of ​​the evaporator fan to the evaporator, so that the heat transfer efficiency of the evaporator is improved: a larger air supply area can make more air contact with the evaporator surface, increasing the heat transfer area, which helps to improve the heat transfer efficiency of the evaporator and achieve better refrigeration effect; the cabinet is cooled evenly: the increase in the air supply area can promote a more even distribution of air on the evaporator surface, avoiding local overheating or overcooling, thereby achieving more even cooling; and the evaporator is reduced in frosting: uniform air supply can reduce the possibility of frosting on the evaporator surface, because the air can flow through the evaporator more fully to prevent frost accumulation.

[0024] In summary, the utility model provides a method for controlling the temperature uniformity of the evaporating fan of the air-cooled freezer, reducing energy consumption, and ensuring that the frost on the evaporator can be removed normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 The utility model discloses a principle block diagram of a system for controlling temperature uniformity and reducing energy consumption of an evaporating fan of an air-cooled refrigerator.

[0027] Figure 2 The utility model discloses a refrigeration system block diagram of a system in which an evaporating fan of an air-cooled freezer controls temperature uniformity and reduces energy consumption.

[0028] Figure 3 The utility model discloses a temperature control system block diagram of a system for controlling temperature uniformity and reducing energy consumption of an evaporating fan of an air-cooled refrigerator.

[0029] Figure 4 The utility model discloses a frequency conversion system block diagram of a system for controlling temperature uniformity and reducing energy consumption of an evaporating fan of an air-cooled refrigerator.

[0030] Figure 5 The utility model discloses a defrosting system block diagram of a system in which an evaporating fan of an air-cooled freezer controls temperature uniformity and reduces energy consumption.

[0031] Figure 6 The utility model is a structural schematic diagram of an evaporating fan of an air-cooled refrigerator system for controlling temperature uniformity and reducing energy consumption.

[0032] Figure 7 The utility model discloses an exploded diagram of an evaporating fan of an air-cooled freezer system for controlling temperature uniformity and reducing energy consumption.

[0033] Figure 8 The utility model is a structural schematic diagram of an evaporator and an evaporating fan of a system for controlling temperature uniformity and reducing energy consumption in an air-cooled refrigerator.

[0034] Fig. 9 The utility model is a structural schematic diagram of the refrigeration principle of a system in which an evaporating fan of an air-cooled freezer controls temperature uniformity and reduces energy consumption.

[0035] Fig.10The utility model discloses a temperature performance curve diagram of a system in which an evaporating fan of an air-cooled freezer controls temperature uniformity and reduces energy consumption. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] Embodiment 1, as Figures 1 to 9 As shown, the embodiment of the utility model proposes a system for controlling temperature uniformity and reducing energy consumption of an evaporative fan of an air-cooled freezer, comprising a box body 1, in which a refrigeration system 2, a temperature control system 3, a frequency conversion system 4, a defrosting system 5 and a central processor 6 are installed;

[0038] The refrigeration system 2 includes an evaporator fan 201, an evaporator 202, a compressor 203, and a condensing unit. The refrigeration system 2 is used to reduce the temperature in the box 1 to cool the box 1. The evaporator fan 201 is arranged on one side of the evaporator 202 and is tilted upward. The evaporator fan 201 includes a fan housing 2011, a motor 2012, a fan blade 2013 and a fan cover 2014. The motor 2012 is installed in the fan housing 2011. The rotor of the motor 2012 is fixedly connected with the fan blade 2013. The fan cover 2014 is installed on one side of the fan housing 2011. The outer edge of the fan blade 2013 is bent outward. The fan blade 2013 can transport the cut air to the surroundings when rotating, thereby increasing the air supply area of ​​the fan blade 2013. The fan blade 2013 is connected to the fan housing 2011 from the root. The fan blade 2013 extends straightly along the length direction to the tip, and the outer edge of the fan blade 2013 forms a 45-degree fillet compared with the straight part of the fan blade 2013. A bracket 2015 is installed at the bottom of the evaporator fan 201, and one end of the bracket 2015 is fixedly connected to the box body 1. The bracket 2015 includes a telescopic mechanism. The evaporator fan 201 can adjust the distance from the evaporator 202 through the telescopic mechanism of the bracket 2015. The evaporator 202 and the evaporator fan 201 are both installed at the top of the inner cavity of the box body 1. A gap is provided between the evaporator 202 and the inner cavity side wall of the box body 1. The wind circulation is sucked in from the top of the evaporator 202 and discharged from the back of the evaporator 202. The top edge of the side of the top of the box body 1 where the evaporator 202 is installed is a rounded edge, which is convenient for the cold wind to flow downward;

[0039] The temperature control system 3 includes a temperature sensor 302, which is used to control the temperature inside the box 1. The temperature sensor 302 is installed in the central area of ​​the box 1. The temperature sensor 302 is used to accurately sense the temperature inside the box 1. The temperature control system 3 includes a digital display temperature controller 301, which is electrically connected to the central processor 6 and is used to display and set the temperature inside the box 1.

[0040] The frequency conversion system 4 includes a first frequency converter 401 and a second frequency converter 402 . The frequency conversion system 4 is used to control the power supply frequency of the compressor 203 and the evaporation fan 201 .

[0041] The defrost system 5 includes a timing module 501 , and the defrost system 5 is used to defrost the evaporator 202 .

[0042] The central processor 6 is used to switch different systems to achieve the functions of refrigeration, defrosting and frequency conversion for the cabinet 1.

[0043] The first frequency converter 401 , the second frequency converter 402 , the timing module 501 , and the temperature sensor 302 are all electrically connected to the central processor 6 . The first frequency converter 401 is electrically connected to the compressor 203 , and the second frequency converter 402 is electrically connected to the evaporating fan 201 .

[0044] The temperature sensor 302 transmits the monitored temperature data in the box 1 to the central processor 6, and the central processor 6 transmits signals to the first inverter 401 and the second inverter 402. After receiving the signals, the first inverter 401 and the second inverter 402 control the operation of the compressor 203 and the evaporating fan 201.

[0045] The timing module 501 is electrically connected to the central processor 6. A timing program is set in the timing module 501. Once the timing module 501 reaches the set time, it will transmit a signal to the central processor 6. The central processor 6 controls the first inverter 401 to adjust the compressor 203 to a low-speed operation mode to assist the defrosting process.

[0046] In the specific implementation process, Figures 1 to 9 As shown, the evaporator 202 and the evaporating fan 201 are installed at the top of the inner cavity of the box 1, which is beneficial to air circulation: the evaporator 202 and the evaporating fan 201 located at the top can promote the circulation of air in the box 1, and the air flows from top to bottom, which can better cover the entire inner cavity of the box 1, ensure uniform temperature distribution, and reduce temperature gradients; improve the cooling effect in the box 1: the top position is conducive to the downward flow of cold air, cooling the items in the box 1 faster, which can improve the refrigeration efficiency, enable the inside of the box 1 to reach the required low temperature faster, and reduce energy consumption.

[0047] The evaporator fan 201 can achieve a frequency conversion function through the second frequency converter 402, so that the evaporator fan 201 can change from the original normal high-speed operation to different speeds according to different situations, thereby reducing energy consumption and improving the practicality of the evaporator fan 201.

[0048] The bracket 2015 not only supports and fixes the evaporator fan 201, but also adjusts the distance between the evaporator fan 201 and the evaporator 202. By adjusting the distance between the evaporator fan 201 and the evaporator 202, it can ensure that the airflow provided by the evaporator fan 201 can act evenly and effectively on the surface of the evaporator 202, thereby improving the operating efficiency of the entire system. The oblique blowing of the evaporator fan 201 can more effectively guide the air flow, reduce wind resistance, and make the air flow in the box body 1 smoother. When the air blows toward the evaporator 202 at an oblique direction, it is easier to bypass obstacles on the surface of the evaporator 202, thereby increasing the air circulation. This flow mode helps to ensure that more cold air can contact the surface of the evaporator 202. Improve the cooling effect. The outer edge of the fan blade 2013 is bent outward to increase the air supply area of ​​the evaporator fan 201 to the evaporator 202, so that the heat transfer efficiency of the evaporator 202 is improved: a larger air supply area can make more air contact with the surface of the evaporator 202, increasing the heat transfer area, which helps to improve the heat transfer efficiency of the evaporator 202 and achieve a better cooling effect; make the box 1 evenly cooled: the increase in the air supply area can promote a more even distribution of air on the surface of the evaporator 202, avoiding local overheating or overcooling, thereby achieving more even cooling; reduce frosting on the evaporator 202: uniform air supply can reduce the possibility of frosting on the surface of the evaporator 202, because the air can flow through the evaporator 202 more fully, preventing frost accumulation.

[0049] Specifically, the working principle of the utility model is as follows:

[0050] The temperature inside the box 1 is set by the temperature control system 3 , and the temperature inside the box 1 is accurately monitored in real time by the temperature sensor 302 .

[0051] The temperature sensor 302 transmits the temperature data of the cabinet 1 to the central processor 6, and the central processor 6 transmits the signal to the first inverter 401 and the second inverter 402. After receiving the signal, the first inverter 401 and the second inverter 402 control the operation of the compressor 203 and the evaporation fan 201. When the temperature of the cabinet 1 monitored by the temperature sensor 302 is higher than the temperature set by the temperature control system 3, the central processor 6 controls the first inverter 401 and the second inverter 402 to change the frequency and voltage of the AC power supply of the compressor 203 and the evaporation fan 201, so that the compressor 203 and the evaporation fan 201 run at a high speed, and the evaporation fan 201 is heated. The fan 201 uses a high speed to run together with the compressor 203 to enhance the heat exchange effect in the box 1 and quickly increase the temperature. When the temperature in the box 1 monitored by the temperature sensor 302 is at the temperature set by the temperature control system 3, and the temperature in the box 1 is stable during the start and stop process, the central processor 6 controls the first inverter 401 and the second inverter 402 to change the frequency and voltage of the AC power supply of the compressor 203 and the evaporating fan 201, so that the compressor 203 and the evaporating fan 201 run at a lower speed. The compressor 203 runs at a lower speed, and the evaporating fan 201 is converted to a lower speed gear to control the air volume, thereby ensuring the temperature uniformity in the box 1 and saving energy efficiency.

[0052] A timing program is set in the timing module 501. Once the set time is reached, the timing module 501 will transmit a signal to the central processor 6 to enter the defrost mode. When defrosting, the central processor 6 controls the first inverter 401 and the second inverter 402 to change the frequency and voltage of the AC power supply of the compressor 203 and the evaporating fan 201, so that the compressor 203 runs at a low speed and the evaporating fan 201 starts at a low speed to realize the defrosting function of the evaporator 202. The low-speed operation of the evaporating fan 201 can drive the air flow in the box 1, thereby accelerating the defrosting process of the evaporator 202 but will not have a great impact on the temperature in the box 1. At the same time, the low-speed operation of the evaporating fan 201 can reduce energy consumption and reduce noise.

[0053] like Fig.10 As shown, the performance curve of the entire refrigerator refrigeration process, including the influence of the power change of the evaporator fan 201 on the temperature curve. If the evaporator fan 201 is always running at high speed, the load fluctuation temperature is about degrees, and according to the control method of this application, the load fluctuation temperature is about 2 degrees.

[0054] In summary, the utility model provides a method for controlling the temperature uniformity of the evaporating fan of the air-cooled freezer, reducing energy consumption, and ensuring that the frost on the evaporator can be removed normally.

[0055] It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but such information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the "first" information may also be referred to as the "second" information, and similarly, the "second" information may also be referred to as the "first" information. In addition, the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0056] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the protection scope of the present invention.

Claims

1. A system for controlling temperature uniformity and reducing energy consumption of an evaporative fan of an air-cooled freezer, comprising a box (1), characterized in that: The box (1) is equipped with a refrigeration system (2), a temperature control system (3), a frequency conversion system (4), a defrosting system (5) and a central processor (6); The refrigeration system (2) comprises an evaporating fan (201), an evaporator (202), a compressor (203), and a condensing unit, and the refrigeration system (2) is used to reduce the temperature inside the box (1) to cool the box (1); The temperature control system (3) comprises a temperature sensor (302), and the temperature control system (3) is used to control the temperature inside the box (1); The frequency conversion system (4) comprises a first frequency converter (401) and a second frequency converter (402), and the frequency conversion system (4) is used to control the power supply frequency of the compressor (203) and the evaporating fan (201); The defrost system (5) comprises a timing module (501), and the defrost system (5) is used to defrost the evaporator (202); The central processor (6) is used to switch different systems to achieve the functions of refrigeration, defrosting and frequency conversion for the cabinet (1); The first frequency converter (401), the second frequency converter (402), the timing module (501), and the temperature sensor (302) are all electrically connected to a central processor (6); the first frequency converter (401) is electrically connected to a compressor (203); and the second frequency converter (402) is electrically connected to an evaporating fan (201).

2. A system for controlling temperature uniformity and reducing energy consumption of an evaporative fan of an air-cooled freezer according to claim 1, characterized in that: The evaporation fan (201) is arranged on one side of the evaporator (202) in an upwardly inclined manner, and comprises a fan casing (2011), a motor (2012), a fan blade (2013) and a fan cover (2014); the motor (2012) is installed in the fan casing (2011); the rotor of the motor (2012) is fixedly connected to the fan blade (2013); a fan cover (2014) is installed on one side of the fan casing (2011); the outer edge of the fan blade (2013) is bent outwardly; the fan blade (2013) can transport the cut air to all sides when rotating, thereby increasing the air supply area of ​​the fan blade (2013).

3. A system for controlling temperature uniformity and reducing energy consumption of an evaporative fan of an air-cooled freezer according to claim 2, characterized in that: The fan blade (2013) extends in a straight line from the root to the tip along the length direction, and the outer edge of the fan blade (2013) forms a 45-degree fillet compared to the straight portion of the fan blade (2013).

4. A system for controlling temperature uniformity and reducing energy consumption of an evaporative fan of an air-cooled freezer according to claim 1, characterized in that: A bracket (2015) is installed at the bottom of the evaporation fan (201), one end of the bracket (2015) is fixedly connected to the box body (1), and the bracket (2015) comprises a telescopic mechanism, and the evaporation fan (201) can adjust the distance from the evaporator (202) through the telescopic mechanism of the bracket (2015).

5. A system for controlling temperature uniformity and reducing energy consumption of an evaporative fan of an air-cooled freezer according to claim 1, characterized in that: The evaporator (202) and the evaporating fan (201) are both installed at the top of the inner cavity of the housing (1); a gap is provided between the evaporator (202) and the inner cavity side wall of the housing (1); air circulation is sucked in from the top of the evaporator (202) and discharged from the back of the evaporator (202).

6. A system for controlling temperature uniformity and reducing energy consumption of an evaporative fan of an air-cooled freezer according to claim 1, characterized in that: The top edge of one side of the box body (1) on which the evaporator (202) is installed is a rounded edge to facilitate the downward flow of cold air.

7. A system for controlling temperature uniformity and reducing energy consumption of an evaporative fan of an air-cooled freezer according to claim 1, characterized in that: The temperature control system (3) comprises a digital display temperature controller (301), the digital display temperature controller (301) being electrically connected to a central processor (6), the digital display temperature controller (301) being used to display and set the temperature in the box (1), the temperature sensor (302) being installed in a central area in the box (1), the temperature sensor (302) being used to accurately sense the temperature in the box (1).

8. The system for controlling temperature uniformity and reducing energy consumption of an evaporative fan of an air-cooled freezer according to claim 1, characterized in that: The temperature sensor (302) transmits the monitored temperature data inside the box (1) to the central processor (6), and the central processor (6) transmits a signal to the first frequency converter (401) and the second frequency converter (402). After receiving the signal, the first frequency converter (401) and the second frequency converter (402) control the operation of the compressor (203) and the evaporating fan (201).

9. A system for controlling temperature uniformity and reducing energy consumption of an evaporative fan of an air-cooled freezer according to claim 1, characterized in that: The timing module (501) is electrically connected to the central processor (6). A timing program is provided in the timing module (501). Once the timing module (501) reaches a set time, it transmits a signal to the central processor (6). The central processor (6) controls the first frequency converter (401) to adjust the compressor (203) to a low-speed operation mode to assist the defrosting process.

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