Air duct system of refrigeration equipment

Abstract

The invention discloses an air duct system of refrigeration equipment. The air duct system comprises a freezing fan cover and an air duct cover plate. The freezing fan cover is buckled with the edge of the air duct cover plate, and a freezing air duct is formed between the freezing fan cover and the air duct cover plate; and a fan motor and an electric air door are arranged in the freezing air duct. According to the air duct system, an air distribution scheme can be formulated according to the temperature requirements of different refrigeration chambers, and independent air supply and independent temperature control of the four chambers of the refrigeration equipment can be achieved through the two electric air doors. The air duct system can meet the requirement for accurate temperature control over the temperature of a cold storage chamber, a freezing chamber, a warm storage chamber and a variable temperature chamber, accurate temperature control over a plurality of different temperature areas is achieved through independent control over the electric air door, the diversified requirement of a user for temperature control is met, and the problem that temperature control of a traditional air cooling product is not flexible is solved.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and more specifically to an air duct system of a refrigeration device. Background Art

[0002] In the field of modern home appliances, refrigeration products such as refrigerators and ice bars provide families with storage space for food and drinks, and also ensure the preservation and freezing of these items through advanced refrigeration technology. Among them, the choice of refrigeration system has become one of the key factors affecting product performance and user experience. At present, refrigeration products on the market mainly use different refrigeration systems such as direct cooling, air cooling and mixed cooling.

[0003] Integral air ducts are often used in existing air-cooled refrigeration products. By optimizing the duct structure, the integral air duct improves the refrigeration efficiency, reduces energy consumption, and provides users with a more uniform and stable temperature environment. This technology not only improves the refrigeration performance of the product, but also provides users with more personalized temperature control options. However, in existing air-cooled products, integral air duct systems that can independently control four different temperature zones are still relatively rare. Most products still rely on more complex refrigeration systems such as dual or triple systems to achieve independent temperature control.

[0004] Therefore, existing air-cooling products cannot provide sufficient flexibility and precision. In addition, using multiple refrigeration systems to achieve independent temperature control not only increases the complexity and cost of the product, but may also have a negative impact on the energy efficiency and reliability of the product. Therefore, how to design an air-cooling duct system that can meet users' needs for multiple independent temperature zones while keeping the product simple, efficient and reliable has become a technical problem that needs to be solved in the current refrigeration product field. Summary of the invention

[0005] In order to solve the problem that the above-mentioned air-cooled products cannot provide sufficient flexibility and precision, and multiple refrigeration systems need to be used to achieve independent temperature control, which increases the complexity and cost of the products and also has a negative impact on the energy efficiency and reliability of the products, the present application provides an air duct system for refrigeration equipment, including: a freezing air hood and an air duct cover.

[0006] The freezing air hood is buckled with the edge of the air duct cover plate, and a freezing air duct is formed between the freezing air hood and the air duct cover plate;

[0007] The refrigeration air hood is provided with an air outlet and an air return port, one end of the refrigeration air duct is connected to the air outlet, and the other end is connected to the air return port;

[0008] A fan motor and an electric damper are arranged inside the refrigeration air duct;

[0009] The fan motor is fixed at a position of the refrigeration hood close to the air outlet; the electric damper is installed at the entrance of each compartment inside the refrigeration equipment;

[0010] and a refrigeration equipment control system electrically connected to the fan motor and the electric damper;

[0011] The refrigeration equipment control system is configured to: send a fan motor control signal to the fan motor to control the fan motor to turn on or off, and the power of the fan motor;

[0012] An electric damper control signal is sent to the electric damper to control the opening and closing degree of the electric damper.

[0013] In a feasible implementation, it also includes: a first air duct cover and a second air duct cover;

[0014] The first air duct cover is fixed between the freezing air hood and the freezing air duct at a position close to the air outlet, and the first air duct cover is used to separate the first chamber and the second chamber;

[0015] The second air duct cover is fixed between the freezing air hood and the freezing air duct at a position close to the return air outlet, and the first air duct cover is used to separate the third chamber and the fourth chamber.

[0016] In a feasible implementation, there are two electric dampers, one is arranged between the first chamber and the second chamber, and the other is arranged between the third chamber and the fourth chamber;

[0017] The electric damper has a fixed end and two control ends;

[0018] The fixed end is fixed between the two compartments, and the control end is respectively connected to two adjacent compartments.

[0019] In a feasible implementation, the refrigeration equipment control system includes a temperature sensor and a controller;

[0020] The temperature sensor is configured to: detect the temperature of each compartment inside the refrigeration device and send a temperature signal to the controller;

[0021] The controller is configured to receive the temperature signal and send the electric damper control signal for adjusting the opening and closing degree of the control end of the electric damper according to the temperature signal.

[0022] In a feasible implementation, a heating wire is provided on the electric damper;

[0023] The controller is configured to: receive the temperature signal, and if the temperature of any one of the first chamber, the second chamber, the third chamber and the fourth chamber is lower than a preset temperature value, send a heating start signal to the electric damper of the corresponding chamber;

[0024] The electric damper is configured to receive the heating start signal and control the heating wire to heat.

[0025] In a feasible implementation, a dehumidification device is provided inside the freezing air duct, and the dehumidification device is provided between the second air duct cover and the return air outlet.

[0026] In a feasible implementation, a drainage structure is provided inside the freezing air duct, and the drainage structure is arranged along the edges of both sides of the freezing air duct.

[0027] In a feasible implementation, the refrigeration equipment control system further includes a compartment temperature display module;

[0028] The compartment temperature display module is electrically connected to the temperature sensor, and is used to receive the temperature signal and display the temperature in the first compartment, the second compartment, the third compartment and the fourth compartment in real time;

[0029] The compartment temperature display module is further configured to interact with the user in real time and manually adjust the electric damper opening or closing degree of the corresponding compartment or the preset temperature value according to the displayed temperature.

[0030] It can be seen from the above content that the present application discloses an air duct system for a refrigeration equipment, including a freezing air hood and an air duct cover; the freezing air hood is buckled with the edge of the air duct cover, and a freezing air duct is formed between the freezing air hood and the air duct cover; a fan motor and an electric damper are arranged inside the freezing air duct. The air duct system of the present application can formulate an air volume distribution plan according to the temperature requirements of different refrigeration compartments, and through two electric dampers, the four compartments of the refrigeration equipment can be independently supplied with air and independent temperature control can be achieved. The air duct system can meet the precise temperature control requirements of refrigeration, freezing, warming, and variable temperature rooms. The air volume of the air duct system is controlled by electric dampers, and can be used for single-door, double-door, multi-door and other products of refrigerators or ice bars, and has a wide range of application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the implementation of the present invention, and together with the specification are used to explain the principles of the embodiments of the present invention. Obviously, the accompanying drawings described below are only some embodiments of the implementation of the present invention, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0032] Figure 1It is a structural schematic diagram of the air duct system of the refrigeration equipment shown in the embodiment of the present application;

[0033] Figure 2 It is a structural schematic diagram of a refrigeration air hood shown in an embodiment of the present application;

[0034] Figure 3 It is a schematic diagram of the structure of the freezing air duct shown in the embodiment of the present application;

[0035] Figure 4 is a schematic structural diagram of an air duct cover plate shown in an embodiment of the present application;

[0036] Figure 5 is a schematic structural diagram of a first air duct cover shown in an embodiment of the present application;

[0037] Figure 6 is a schematic structural diagram of a second air duct cover shown in an embodiment of the present application;

[0038] Figure 7 is a schematic structural diagram of a fan motor shown in an embodiment of the present application;

[0039] Figure 8 is a schematic diagram of the structure of an electric damper shown in an embodiment of the present application;

[0040] Fig. 9 yes Figure 8 A three-dimensional schematic diagram of .

[0041] Description of Figure Numbers:

[0042] 1-refrigeration hood; 2-refrigeration air duct; 3-air duct cover; 4-first air duct cover; 5-second air duct cover; 6-fan motor; 7-electric damper. DETAILED DESCRIPTION

[0043] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the embodiments of the present invention will be more comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, many specific details are provided to provide a full understanding of the implementation of the embodiments of the present invention.

[0044] Integral air ducts are often used in existing air-cooled refrigeration products. Integral air ducts improve refrigeration efficiency, reduce energy consumption, and provide users with a more uniform and stable temperature environment by optimizing the air duct structure. This technology not only improves the refrigeration performance of the product, but also provides users with more personalized temperature control options. However, in existing air-cooled products, integral air duct systems that can independently control four different temperature zones are still relatively rare. Most products still rely on more complex refrigeration systems such as dual or triple systems to achieve independent temperature control. Therefore, existing air-cooled products cannot provide sufficient flexibility and precision. In addition, the use of multiple refrigeration systems to achieve independent temperature control not only increases the complexity and cost of the product, but may also have a negative impact on the energy efficiency and reliability of the product.

[0045] In order to solve the above problems, the present application provides an air duct system for a refrigeration device, referring to Figures 1 to 9 As shown, it includes: a refrigeration hood 1 and an air duct cover 3; the edges of the refrigeration hood 1 and the air duct cover 3 are buckled together, and a refrigeration air duct 2 is formed between the refrigeration hood 1 and the air duct cover 3. The edges of the refrigeration hood 1 and the air duct cover 3 are tightly connected by buckling, forming a closed and efficient air duct system. This structure not only enhances the structural stability of the system, but also effectively reduces cold air leakage and improves refrigeration efficiency.

[0046] The refrigeration hood 1 is provided with an air outlet and an air return port, one end of the refrigeration air duct 2 is connected to the air outlet, and the other end is connected to the air return port; one end of the refrigeration air duct 2 is seamlessly connected to the air outlet, and the other end is connected to the air return port, forming a complete cold air circulation loop. This loop design allows the cold air to be evenly and efficiently distributed to various areas of the refrigeration equipment, achieving uniform temperature distribution.

[0047] A fan motor 6 and an electric damper 7 are provided inside the refrigeration air duct 2. The fan motor 6 is fixed to the refrigeration hood 1 near the air outlet; the electric damper 7 is installed at the entrance of each compartment inside the refrigeration equipment. The fan motor 6 is fixed to the refrigeration hood 1 near the air outlet to drive the circulation of cold air. By adjusting the speed and power of the fan motor 6, the flow rate and speed of the cold air can be accurately controlled to meet different temperature control requirements and achieve energy-saving and efficient refrigeration effects. Secondly, by adjusting the opening and closing degree of the electric damper 7, the cold air supply in each temperature zone can be independently controlled to achieve precise temperature control in four different temperature zones, greatly improving the flexibility and personalized customization capabilities of the refrigeration equipment.

[0048] And a refrigeration equipment control system electrically connected to the fan motor 6 and the electric damper 7; the refrigeration equipment control system is configured to: send a fan motor 6 control signal to the fan motor 6 to control the fan motor 6 to be turned on or off, and the power of the fan motor 6; send an electric damper 7 control signal to the electric damper 7 to control the opening and closing degree of the electric damper 7.

[0049] The refrigeration equipment control system can adjust the operating status of the fan motor and the opening and closing degree of the electric damper in real time to ensure the optimal balance between refrigeration efficiency and temperature control.

[0050] The air duct system of a refrigeration device provided in the embodiment of the present application realizes precise temperature control of multiple different temperature zones by independently controlling the electric damper 7, thereby meeting the diverse needs of users for temperature control and solving the problem of inflexible temperature control of traditional air-cooled products. Compared with the traditional multi-system refrigeration solution, this system adopts a single air duct structure with a control system, which greatly simplifies the system complexity, reduces production costs and maintenance difficulties, and avoids energy efficiency losses and reliability issues that may exist between multiple systems.

[0051] By optimizing the air duct structure and intelligently adjusting the fan motor power, the system achieves efficient recycling of cold air and significantly improves the energy efficiency ratio. At the same time, the intelligent management of the system reduces human operating errors and improves the stability and reliability of the overall operation. Furthermore, the personalized temperature control options and stable temperature environment provide users with a more comfortable experience and meet the delicate needs of temperature control in different scenarios.

[0052] In some embodiments of the present application, it also includes: a first air duct cover 4 and a second air duct cover 5; the first air duct cover 4 is fixed between the freezing air hood 1 and the freezing air duct 2 near the air outlet, and the first air duct cover 4 is used to separate the first chamber and the second chamber; the second air duct cover 5 is fixed between the freezing air hood 1 and the freezing air duct 2 near the return air outlet, and the first air duct cover 4 is used to separate the third chamber and the fourth chamber.

[0053] The first air duct cover 4 can effectively divide the cold air outlet of the freezing air duct 2 into two independent channels, serving the first chamber and the second chamber respectively, ensuring that each chamber can obtain an appropriate amount of cold air supply, avoiding the disorderly flow of cold air between different chambers, thereby improving the accuracy and energy efficiency of temperature control.

[0054] Similarly, the second air duct cover 5 not only separates the cold air return channel of the third chamber and the fourth chamber, but also promotes the orderly return of cold air at the return air outlet through its unique structure. This design reduces the energy loss of cold air during the return air process and improves the overall energy efficiency of the system.

[0055] Through the first air duct cover 4 and the second air duct cover 5, the air duct system of the present application can achieve precise temperature control of four independent compartments. Each compartment can obtain an appropriate amount of cold air supply according to actual needs, thereby meeting the user's diverse needs for temperature control and improving the flexibility and personalized customization capabilities of the system. Furthermore, the flow path of the cold air is optimized, reducing the disordered flow and energy loss of the cold air between different compartments. This design not only improves the overall energy efficiency of the system, but also enhances the stability of the system, reduces energy consumption and failure rate. While maintaining efficient refrigeration performance, the air duct system simplifies the system structure, reduces production costs and maintenance difficulties.

[0056] In some embodiments of the present application, there are two electric dampers 7, one is arranged between the first chamber and the second chamber, and the other is arranged between the third chamber and the fourth chamber; the electric damper 7 has a fixed end and two control ends; the fixed end is fixed between the two chambers, and the control ends are respectively connected to two adjacent chambers.

[0057] It is understandable that an electric damper 7 is arranged between two independent compartments, such as between the first compartment and the second compartment, and between the third compartment and the fourth compartment. This layout is intended to accurately control the flow of cold air between two adjacent compartments through the opening and closing action of the electric damper, so as to achieve independent temperature regulation. Each electric damper 7 is provided with a fixed end and two control ends. The fixed end is firmly mounted at the separation of the two compartments to ensure the stability and reliability of the damper. The two control ends are respectively connected to the two adjacent compartments, and the damper is opened and closed by the electric drive mechanism.

[0058] The main function of the electric damper 7 is to regulate the flow of cold air between two adjacent compartments. When it is necessary to increase or decrease the cold air supply to a certain compartment, this can be achieved by controlling the degree of opening of the electric damper 7. This adjustment method is both flexible and accurate, and can meet the diverse needs of different compartments for temperature control. When necessary, the electric damper 7 can be completely closed to isolate the flow of cold air between two adjacent compartments. This isolation function helps to maintain the temperature of each compartment stable, avoid the disordered flow of cold air between different compartments, and improve the overall energy efficiency of the system.

[0059] In some embodiments of the present application, the refrigeration equipment control system includes a temperature sensor and a controller. The temperature sensor is configured to detect the temperature of each compartment inside the refrigeration equipment and send a temperature signal to the controller; the controller is configured to receive the temperature signal and send an electric damper 7 control signal to adjust the opening and closing degree of the control end of the electric damper 7 according to the temperature signal.

[0060] The temperature sensor is made of advanced thermosensitive materials and can detect the current temperature of the room in real time and accurately. Once the temperature changes, the temperature sensor will respond immediately and convert the change into a temperature signal. The controller is equipped with a high-performance microprocessor or single-chip microcomputer, which can quickly analyze the temperature signal from the temperature sensor, calculate the degree of adjustment required according to the preset temperature threshold or the target temperature set by the user, and generate a control signal for the electric damper 7.

[0061] According to the control signal sent by the controller, the electric damper 7 can automatically adjust its opening and closing degree, thereby optimizing the flow path and flow rate of the cold air, ensuring that each room can reach the ideal temperature state. This dynamic adjustment mechanism not only improves the cooling efficiency, but also significantly reduces unnecessary energy consumption.

[0062] In some embodiments of the present application, a heating wire is provided on the electric damper 7; the controller is configured to: receive a temperature signal, and if the temperature of any of the first chamber, the second chamber, the third chamber and the fourth chamber is lower than a preset temperature value, send a heating start signal to the electric damper 7 of the corresponding chamber; the electric damper 7 is configured to: receive the heating start signal and control the heating wire to heat.

[0063] The heating wire is made of high-resistance, high-temperature-resistant material and is evenly distributed inside or on the edge of the damper, and can quickly generate heat when powered on. This design enables the electric damper 7 to not only have the function of regulating the flow of cold air, but also serve as an auxiliary heating element when needed to provide additional heat for the corresponding compartment.

[0064] In this embodiment, by adding a heating wire, the electric damper 7 can provide additional heat to the compartment under extremely low temperature conditions, ensuring that the temperature is controlled within a preset range, avoiding equipment failure or damage to stored items caused by too low temperature. The controller can monitor the temperature of each compartment in real time and quickly start the heating function as needed, significantly improving the flexibility and response speed of temperature regulation, and meeting diverse and rapidly changing temperature requirements. At the same time, users can enjoy the stable and comfortable temperature environment brought by the intelligent control system without manual intervention, which improves the convenience and satisfaction of use.

[0065] In some embodiments of the present application, a dehumidification device is provided inside the freezing air duct 2, and the dehumidification device is provided between the second air duct cover 5 and the return air outlet.

[0066] The main function of the dehumidifier is to remove excess moisture from the cold air circulating in the refrigeration duct 2 to prevent condensation, ice formation or equipment performance degradation caused by excessive humidity. The device can use a variety of technologies, such as condensation dehumidification, adsorption dehumidification or membrane separation dehumidification, and the specific choice depends on the actual application scenario and performance requirements. When the cold air circulates in the refrigeration duct 2, the dehumidifier captures and removes the moisture in it to ensure that the cold air remains dry, thereby improving refrigeration efficiency and equipment stability.

[0067] By adding a dehumidifier and precisely controlling its position, this embodiment solves the problem of excessive humidity inside the refrigeration air duct and improves the stability and efficiency of the refrigeration system. The dehumidified cold air is drier and can absorb heat more effectively, thereby improving the refrigeration efficiency and reducing energy consumption. A high humidity environment is prone to condensation, icing and other problems, affecting equipment performance. The dehumidifier can effectively prevent these problems from occurring and extend the service life of the equipment.

[0068] In some embodiments of the present application, a drainage structure is provided inside the freezing air duct 2 , and the drainage structure is provided along the edges of both sides of the freezing air duct 2 .

[0069] The main function of the drainage structure is to collect and guide the condensed water generated inside the refrigeration air duct 2, ensure that it can be smoothly discharged to the outside of the equipment, and prevent equipment failure or performance degradation caused by the accumulation of condensed water. The drainage structure may take a variety of forms, such as grooves, conduits or sump, etc. The specific choice depends on the actual application scenario and drainage requirements. When condensed water is formed inside the refrigeration air duct 2, the drainage structure will quickly capture it and guide it to the predetermined drainage outlet, thereby keeping the inside of the air duct dry and clean.

[0070] At the same time, the drainage structure is arranged along the two side edges of the freezing air duct 2, which can maximize the coverage of the area inside the air duct where condensed water may be generated, ensuring that the condensed water is collected without omission. Secondly, the two side edges are usually relatively flat parts of the air duct structure where the drainage structure is easy to arrange, which is convenient for installation and maintenance. Finally, the drainage structure arranged along the edge will not interfere with the normal flow of cold air, maintaining the smooth flow of the air duct and the refrigeration efficiency.

[0071] In some embodiments of the present application, the refrigeration equipment control system also includes a compartment temperature display module; the compartment temperature display module is electrically connected to the temperature sensor, and is used to receive a temperature signal and display the temperature of the first compartment, the second compartment, the third compartment and the fourth compartment in real time; the compartment temperature display module is also configured to: interact with the user in real time, and manually adjust the opening and closing degree of the electric damper 7 of the corresponding compartment or the preset temperature value according to the displayed temperature.

[0072] The main function of the compartment temperature display module is to convert the received temperature signal into a visual temperature value and display it in real time on the display screen. In this way, the user can intuitively understand the current temperature status of each compartment. In addition, the compartment temperature display module also has the ability to interact with the user in real time, allowing the user to manually adjust the opening and closing degree of the electric damper 7 of the corresponding compartment or the preset temperature value according to the displayed temperature. This interactivity not only improves the user's operating experience, but also enables the refrigeration equipment to perform personalized temperature adjustment according to the actual needs of the user.

[0073] The compartment temperature display module realizes real-time interaction with the user through an intuitive display screen and a friendly user interface. The user can easily view the temperature information of each compartment through a touch screen or buttons, and adjust it as needed. For example, when the user finds that the temperature of a compartment is too high or too low, he can directly operate on the compartment temperature display module to adjust the opening and closing degree of the electric damper 7 of the corresponding compartment to change the flow and distribution of the cold air; or adjust the preset temperature value to change the cooling intensity of the refrigeration equipment. This interactive mechanism enables users to flexibly and quickly adjust the operating status of the refrigeration equipment according to their actual needs.

[0074] By adding a compartment temperature display module, the embodiment of the present application allows the user to intuitively understand the temperature status of each compartment and perform personalized temperature adjustment as needed. The real-time interaction mechanism between the compartment temperature display module and the user enables the user to quickly adjust the operating status of the refrigeration equipment according to their actual needs, thereby improving the flexibility and response speed of the system. The user can reasonably adjust the opening and closing degree and the preset temperature value of the electric damper 7 according to the temperature information provided by the compartment temperature display module, thereby optimizing the operating efficiency of the refrigeration equipment and reducing energy consumption. In addition, by real-time monitoring and displaying the temperature information of each compartment, the user can promptly discover and handle abnormal situations, such as excessively high or low temperatures, thereby avoiding equipment failure or performance degradation caused by abnormal temperatures.

[0075] From the above content, it can be seen that the present application discloses an air duct system for a refrigeration equipment, including a freezing air hood and an air duct cover; the freezing air hood is buckled with the edge of the air duct cover, and a freezing air duct is formed between the freezing air hood and the air duct cover; a fan motor and an electric damper are arranged inside the freezing air duct. The air duct system of the present application can formulate an air volume distribution plan according to the temperature requirements of different refrigeration compartments, and through two electric dampers, four compartments of the refrigeration equipment can be independently supplied with air and independent temperature control can be achieved. The air duct system can meet the precise temperature control requirements of refrigeration, freezing, warming, and variable temperature rooms. Through independent control of the electric dampers, precise temperature control of multiple different temperature zones can be achieved, which meets the diverse needs of users for temperature control and solves the problem of inflexible temperature control of traditional air-cooled products.

[0076] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the disclosure herein. This application is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

Claims

1. An air duct system for a refrigeration device, characterized in that: include: A freezing air hood (1) and an air duct cover (3); The freezing air hood (1) is buckled with the edge of the air duct cover (3), and a freezing air duct (2) is formed between the freezing air hood (1) and the air duct cover (3); The refrigeration air hood (1) is provided with an air outlet and an air return port, one end of the refrigeration air duct (2) is connected to the air outlet, and the other end is connected to the air return port; The refrigeration air duct (2) is provided with a fan motor (6) and an electric damper (7); The fan motor (6) is fixed on the freezing air hood (1) at a position close to the air outlet; the electric damper (7) is installed on the entrance of each compartment inside the refrigeration equipment; and a refrigeration equipment control system electrically connected to the fan motor (6) and the electric damper (7); The refrigeration equipment control system is configured to: send a fan motor (6) control signal to the fan motor (6) to control the fan motor (6) to turn on or off, and the power of the fan motor (6); An electric damper (7) control signal is sent to the electric damper (7) to control the opening and closing degree of the electric damper (7).

2. The air duct system of a refrigeration equipment according to claim 1, characterized in that: Also includes: A first air duct cover (4) and a second air duct cover (5); The first air duct cover (4) is fixed between the freezing air hood (1) and the freezing air duct (2) at a position close to the air outlet, and the first air duct cover (4) is used to separate the first chamber from the second chamber; The second air duct cover (5) is fixed between the freezing air hood (1) and the freezing air duct (2) at a position close to the return air outlet, and the first air duct cover (4) is used to separate the third chamber and the fourth chamber.

3. The air duct system of a refrigeration equipment according to claim 2, characterized in that: There are two electric dampers (7), one is arranged between the first chamber and the second chamber, and the other is arranged between the third chamber and the fourth chamber; The electric damper (7) has a fixed end and two control ends; The fixed end is fixed between the two compartments, and the control end is respectively connected to two adjacent compartments.

4. The air duct system of a refrigeration equipment according to claim 3, characterized in that: The refrigeration equipment control system includes a temperature sensor and a controller; The temperature sensor is configured to: detect the temperature of each compartment inside the refrigeration device and send a temperature signal to the controller; The controller is configured to receive the temperature signal and, based on the temperature signal, send a control signal of the electric damper (7) for adjusting the opening and closing degree of the control end of the electric damper (7).

5. The air duct system of a refrigeration equipment according to claim 4, characterized in that: The electric damper (7) is provided with a heating wire; The controller is configured to: receive the temperature signal, and if the temperature of any one of the first chamber, the second chamber, the third chamber and the fourth chamber is lower than a preset temperature value, send a heating start signal to the electric damper (7) of the corresponding chamber; The electric damper (7) is configured to receive the heating start signal and control the heating wire to heat.

6. The air duct system of a refrigeration equipment according to claim 2, characterized in that: A dehumidification device is provided inside the freezing air duct (2), and the dehumidification device is provided between the second air duct cover (5) and the return air outlet.

7. The air duct system of a refrigeration equipment according to claim 1, characterized in that: A drainage structure is provided inside the freezing air duct (2), and the drainage structure is arranged along the edges of both sides of the freezing air duct (2).

8. The air duct system of a refrigeration equipment according to claim 5, characterized in that: The refrigeration equipment control system also includes a compartment temperature display module; The compartment temperature display module is electrically connected to the temperature sensor, and is used to receive the temperature signal and display the temperature in the first compartment, the second compartment, the third compartment and the fourth compartment in real time; The compartment temperature display module is also configured to interact with the user in real time and manually adjust the opening degree of the electric damper (7) of the corresponding compartment or the preset temperature value according to the displayed temperature.

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