Refrigerator air duct structure and refrigeration equipment

Abstract

The application discloses a refrigerator air duct structure and a refrigeration equipment, and relates to the technical field of household appliances. The refrigerator air duct structure comprises an air duct plate, a first air duct cover, a second air duct cover and an electric air door group. The air duct plate comprises a first surface and a second surface. A first air groove is in communication with a freezing chamber. A second air groove is arranged on the second surface and is in communication with a temperature changing chamber. An air inlet in communication with the first air groove and the second air groove is further arranged on the air duct plate. The flow direction of air in the first air groove is different from that of air in the second air groove. The electric air door group is installed on the first surface. The electric air door group comprises a first electric air door. The first electric air door is installed in the first air duct. The first electric air door can enable air in the first air duct to enter the second air duct, or the first electric air door can block air in the first air duct from entering the second air duct. The application can prevent hot air and moisture in the temperature changing chamber from reaching the first electric air door, so that water droplets are not easily generated on the first electric air door.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and more specifically, to a refrigerator air duct structure and refrigeration equipment. Background Technology

[0002] With economic development, refrigeration equipment has entered thousands of households, making a significant contribution to ensuring the freshness and safety of household food. Refrigeration equipment includes the refrigerator's air duct structure.

[0003] The refrigerator's air duct structure includes a variable temperature compartment air duct and an electric damper. At least part of the electric damper is located inside the insulated air duct. The variable temperature compartment connects to the freezer compartment and the variable temperature compartment. Cold air from the freezer compartment enters the variable temperature compartment through the variable temperature compartment air duct to keep the food inside the variable temperature compartment fresh.

[0004] However, in related technologies, ice can easily form on the electric damper, thereby reducing the reliability of the refrigerator's air duct structure. Summary of the Invention

[0005] The main objective of this invention is to provide a refrigerator air duct structure and freezing equipment, aiming to solve the problem in related technologies where ice easily forms on the electric damper, thereby reducing the reliability of the refrigerator air duct structure.

[0006] To solve the above-mentioned technical problems, the present invention provides a refrigerator air duct structure, the refrigerator air duct structure comprising: The air duct plate includes a first surface and a second surface arranged opposite to each other along the thickness direction of the air duct plate. The first surface is provided with a first air groove that communicates with the freezer compartment. The second surface is provided with a second air groove that communicates with the variable temperature compartment. The air duct plate is also provided with an air inlet that connects the first air groove and the second air groove. The airflow direction in the first air groove is different from the airflow direction in the second air groove. A first air duct cover is installed on the first surface, and the first air duct cover and the first air slot together form a first air duct. A second air duct cover is installed on the second side. The second air duct cover and the second air slot enclose a second air duct to form a second air duct. The second air duct is connected to the first air duct through the air inlet. An electric damper assembly is installed on the first side. The electric damper assembly includes a first electric damper, which is installed in the first air duct. The first electric damper can allow air from the first air duct to enter the second air duct, or it can block air from the first air duct from entering the second air duct.

[0007] In one possible implementation, the air duct plate includes an air guide portion located between the first air duct and the second air duct. The air guide portion includes a first air guide surface and a second air guide surface disposed opposite to each other. The first air guide surface is connected to the first air groove, and the second air guide surface is connected to the second air groove. The included angle between the first air guide surface and the second air guide surface is less than 90°.

[0008] In one possible implementation, the air duct plate further includes a return air section located on the first surface. The return air section and the air guide section form at least a portion of the air inlet. The return air section and the first air duct cover form a return air cavity, which is connected to both the first air duct and the second air duct. The return air section includes a first return air surface, which is inclined and the inclination direction of the first return air surface is the same as the inclination direction of the second air guide surface.

[0009] In one possible implementation, the air guide has a wedge-shaped structure, and the thickness of the air guide gradually increases along the direction from the first surface to the second surface.

[0010] In one possible implementation, the refrigerator air duct structure further includes a third air duct cover, and the first surface is also provided with a third air groove and a fourth air groove that are connected to each other. A third air duct is formed between the first air duct cover and the third air groove, and a fourth air duct is formed between the third air duct cover and the fourth air groove. The fourth air duct is connected to the third air duct and is connected to the refrigerator compartment. The electric damper assembly also includes a second electric damper located in the third air duct. The second electric damper can allow air from the third air duct to enter the fourth air duct, or it can block air from the third air duct from entering the fourth air duct.

[0011] In one possible implementation, the first air duct cover is further provided with a first notch, and the third air duct and the fourth air duct are connected through the first notch; The first surface is also provided with a dividing ridge, which divides the fourth air duct into a first sub-air duct and a second sub-air duct. The fourth air duct cover and the first sub-air duct enclose each other to form a first sub-air duct, and the fourth air duct cover and the second sub-air duct enclose each other to form a second sub-air duct.

[0012] In one possible implementation, the first air duct cover is further provided with a wire harness hole, which is connected to the first air duct; the second air duct cover is further provided with a first air outlet, which is connected to the second air duct and to the variable temperature chamber. The second surface also has a first mounting protrusion and a second mounting protrusion facing the second air duct. The side of the second air duct cover facing the second surface has a first mounting groove and a second mounting groove. The first mounting protrusion is engaged with the first mounting groove, and the second mounting protrusion is engaged with the second mounting groove.

[0013] In one possible implementation, the duct plate further includes a mounting block and a mounting ramp located on the first surface. The mounting block is provided with a first slot. The electric damper assembly includes a first snap-fit ​​protrusion and a pressing surface. The first snap-fit ​​protrusion snaps into the first slot, and the pressing surface presses against the mounting ramp.

[0014] In one possible implementation, the mounting block has a second snap-fit ​​protrusion on the side facing the first air duct, and the first air duct cover has a second and a third slot that are interconnected on the side facing the first surface. The third slot is located in the second slot, the second slot is snap-fitted to the mounting block, and the third slot is snap-fitted to the second snap-fit ​​protrusion. The first air duct cover has a first sealing surface on the side facing the first surface, and the electric damper assembly has a second sealing surface on the side facing the first air duct cover, with the second sealing surface abutting against the first sealing surface.

[0015] In one possible implementation, the present invention also provides a refrigeration apparatus, the refrigeration apparatus comprising a refrigerator compartment, a variable temperature compartment, and a freezer compartment, the refrigeration apparatus comprising: The refrigerator air duct structure described in this application is located at least in the variable temperature compartment; A partition is located between the variable temperature chamber and the cold storage chamber; The flip-top connects to the guide rail of the variable temperature compartment.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention proposes a refrigerator air duct structure and refrigeration equipment. By dividing the air duct connecting the freezer compartment and the variable temperature compartment into a first air duct and a second air duct, and setting the first air duct and the second air duct to have an angle, the hot air and moisture in the variable temperature compartment are less likely to reach the first electric damper, thereby making it less likely for water droplets to form on the first electric damper, and thus less likely for ice to form on the first electric damper, ultimately improving the reliability of the refrigerator air duct. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A three-dimensional structural diagram illustrating the refrigerator air duct structure of the first air duct cover and the third air duct cover provided in an embodiment of the present invention; Figure 2 A three-dimensional structural diagram of the refrigerator air duct structure after removing the third air duct cover, provided in an embodiment of the present invention; Figure 3 This is a three-dimensional structural diagram of the refrigerator air duct structure after removing the third air duct cover and the first air duct cover, provided in an embodiment of the present invention. Figure 4 A three-dimensional structural diagram illustrating the refrigerator air duct structure of the second air duct cover provided in an embodiment of the present invention; Figure 5 This is a three-dimensional structural diagram of the refrigerator air duct structure after removing the electric damper assembly, the third air duct cover, and the first air duct cover, as provided in an embodiment of the present invention. Figure 6 A three-dimensional structural diagram of removing the second air duct cover provided in an embodiment of the present invention; Figure 7 This is a partial three-dimensional structural diagram of the refrigerator air duct structure after removing the electric damper assembly, the third air duct cover, and the first air duct cover, as provided in an embodiment of the present invention. Figure 8 This is one of the three-dimensional structural schematic diagrams of the first air duct cover provided in an embodiment of the present invention; Figure 9 A second three-dimensional structural schematic diagram of the first air duct cover provided in an embodiment of the present invention; Figure 10 This is one of the three-dimensional structural schematic diagrams of the second air duct cover provided in an embodiment of the present invention; Figure 11 This is a second three-dimensional structural schematic diagram of the second air duct cover provided in an embodiment of the present invention; Figure 12 This is one of the three-dimensional structural schematic diagrams of the electric damper assembly provided in the embodiments of the present invention; Figure 13 This is the second three-dimensional structural schematic diagram of the electric damper assembly provided in the embodiment of the present invention; Figure 14 This is a three-dimensional structural diagram of a refrigerator provided in an embodiment of the present invention; Figure 15 One of the three-dimensional structural schematic diagrams of the partition provided in the embodiment of the present invention; Figure 16 This is the second three-dimensional structural schematic diagram of the partition provided in an embodiment of the present invention; Figure 17 This is one of the three-dimensional structural diagrams of a flip cover provided in an embodiment of the present invention; Figure 18 This is the second three-dimensional structural schematic diagram of the flip cover provided in an embodiment of the present invention.

[0019] Reference numerals: 1. Third duct cover; 2. Duct plate; 201. First surface; 202. Second surface; 21. First air slot; 22. Second air slot; 23. Third air slot; 24. Fourth air slot; 241. First sub-air slot; 242. Second sub-air slot; 25. First mounting protrusion; 26. Second mounting protrusion; 3. First duct cover; 31. Wiring harness hole; 32. Notch; 33. Second slot; 34. Third slot; 35. First sealing surface; 4. Electric damper assembly; 401. First electric damper; 402. Second electric damper; 41. First snap-fit ​​protrusion; 42. Abutting surface; 43. Second sealing surface; 51. First duct. 52. Second air duct; 53. Third air duct; 54. Fourth air duct; 541. First sub-air duct; 542. Second sub-air duct; 6. Dividing rib; 7. Second air duct cover; 71. First air outlet; 72. First mounting groove; 73. Second mounting groove; 8. Mounting block; 81. Second snap-fit ​​protrusion; 82. First snap-fit ​​groove; 83. Mounting slope; 9. Air guide section; 91. First air guide surface; 92. Second air guide surface; 10. Air inlet; 11. Return air section; 111. First return air surface; 1111. Return air cavity; 12. Refrigerator; 121. Refrigerator compartment; 122. Variable temperature compartment; 123. Freezer compartment; 13. Partition; 14. Flip cover. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of this invention, it should be noted that the terms "first," "second," "third," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0024] In the description of this invention, it should be noted that the terms "vertical", "horizontal", "above", "below", "upper side", "top surface" and "bottom surface" are all based on the corresponding view or the orientation in which the refrigeration equipment is placed during normal use.

[0025] Currently, frost-free refrigerators are the mainstream product in the market. To meet the usage habits of consumers in different countries, the top-freeze, bottom-storage series of frost-free refrigerators has become a major growth point in recent years in regions such as Saudi Arabia, the Americas, Southeast Asia, and Africa. Furthermore, large-capacity top-freeze, bottom-storage series products are gradually trending towards high-end products. Currently, most frost-free refrigerators with a bottom-freeze design on the market are dual-temperature zone products with few temperature zones, unable to meet the storage needs of multiple scenarios such as freezing, refrigeration, zero-degree, and soft freezing. Moreover, they share air ducts, resulting in long air delivery paths, high air resistance, large temperature differences between the top and bottom, and uneven cooling. Some refrigerators claiming to preserve freshness only have compartments separated by a lower tray compared to the refrigeration compartment, which is not true preservation, has large temperature fluctuations, and a poor user experience.

[0026] Currently, most large-capacity frost-free refrigerators with a bottom-freeze compartment still rely on mechanical airflow control. However, in recent years, as the industry has increasingly favored high-end large-capacity models, independent temperature control for both refrigerator and freezer compartments, door displays, and electric damper adjustment have become the trend. Simultaneously, the differentiated needs of high-end users in niche markets have led to a stronger demand for precise temperature control and multi-scenario storage. Due to their unique refrigerator / freezer layout, the refrigerator compartment is at the bottom, causing cold air to sink and hot air to rise, resulting in significant temperature fluctuations in the upper part of the refrigerator. This presents challenges and reliability risks in designing the variable-temperature compartment. Furthermore, because the electric damper is located above the refrigerator air duct, rising moisture increases the risk of icing on the damper, leading to a series of reliability issues. Poor handling of these factors can result in a poor user experience and a decline in product reputation. Therefore, the installation location of the electric damper and the sealing of the variable-temperature compartment directly affect the user experience.

[0027] The main reason for the above problems is that the variable temperature compartment's air duct is a straight duct, meaning that cold air from the freezer compartment can directly enter the variable temperature compartment. Similarly, hot and humid air from the variable temperature compartment can also rise directly to the electric damper. When the hot and humid air from the variable temperature compartment meets the cold air blowing from the freezer compartment, water droplets easily form on the electric damper. These water droplets condense and then freeze on the electric damper. Ice formation on the electric damper reduces its reliability, thereby reducing the reliability of the refrigerator's air duct structure.

[0028] To address the aforementioned technical problems, the following innovative technical solutions are designed. The specific implementation schemes of this application will be described in detail below with reference to the accompanying drawings. It should be noted that the deficiencies in the existing solutions are the result of practical experience and careful research. Therefore, the discovery process of the aforementioned technical problems and the solutions proposed in this embodiment below should be considered contributions made to this application during the invention process, and should not be construed as technical content known to those skilled in the art.

[0029] Please see Figures 1-6 and Figure 14 The present invention provides a refrigerator air duct structure, which includes an air duct plate 2, a first air duct cover 3, a second air duct cover 7, and an electric air damper assembly 4.

[0030] Along the thickness direction of the air duct plate 2, the air duct plate 2 includes a first surface 201 and a second surface 202 arranged opposite to each other. The first surface 201 is provided with a first air duct 21, which is connected to the freezer compartment 123. The second surface 202 is provided with a second air duct 22, which is connected to the variable temperature compartment 122. The air duct plate 2 is also provided with an air inlet 10 connecting the first air duct 21 and the second air duct 22. The airflow direction of the air in the first air duct 21 is different from that of the airflow direction of the air in the second air duct 22.

[0031] The first air duct cover 3 is installed on the first surface 201, and the first air duct cover 3 and the first air groove 21 enclose each other to form the first air duct 51.

[0032] The second air duct cover 7 is installed on the second surface 202. The second air duct cover 7 and the second air groove 22 enclose each other to form the second air duct 52. The second air duct 52 is connected to the first air duct 51 through the air inlet 10.

[0033] The electric damper assembly 4 is installed on the first surface 201. The electric damper assembly 4 includes a first electric damper 401, which is installed in the first air duct 51. The first electric damper 401 can allow the air in the first air duct 51 to enter the second air duct 52, or the first electric damper 401 can block the air in the first air duct 51 from entering the second air duct 52.

[0034] Both the first surface 201 and the second surface 202 can include a plane and an inclined surface. The surface on one side of the air duct plate 2 can be regarded as the first surface 201, and the surface on the opposite side of the air duct plate 2 can be regarded as the second surface 202.

[0035] The electric damper assembly 4 is a conventional product, and the opening and closing of the first electric damper 401 can be controlled by conventional methods. When the first electric damper 401 is open, the air in the freezer compartment 123 can enter the variable temperature compartment 122 through the first air duct 51 and the second air duct 52 in sequence; when the first electric damper 401 is closed, the air in the freezer compartment 123 cannot enter the variable temperature compartment 122 through the first air duct 51 and the second air duct 52.

[0036] The airflow direction in the first air duct 21 is different from that in the second air duct 22; that is, the first air duct 51 and the second air duct 52 are not connected in a straight line, and there is an angle between them. As a result, hot and humid air in the variable temperature compartment 122 is less likely to reach the first air duct 51 from the second air duct 52, and even less likely to reach the first electric damper 401. This reduces the likelihood of water droplets forming on the first electric damper 401, and consequently reduces the likelihood of ice formation on it, ultimately improving the reliability of the refrigerator 12's air duct system.

[0037] Based on the above design, this embodiment divides the air duct connecting the freezer compartment 123 and the variable temperature compartment into a first air duct 51 and a second air duct 52, and sets the first air duct 51 and the second air duct 52 to have a corner. This makes it difficult for hot and humid air in the variable temperature compartment to reach the first electric damper 401, thereby making it less likely for water droplets to form on the first electric damper 401, and thus less likely for ice to form on the first electric damper 401. Ultimately, this can improve the reliability of the air duct of the refrigerator 12.

[0038] In one possible implementation, please refer to Figure 6 and Figure 7 The air duct plate 2 includes an air guide section 9, which is located between the first air duct 51 and the second air duct 52. The air guide section 9 includes a first air guide surface 91 and a second air guide surface 92 that are arranged opposite to each other. The first air guide surface 91 is connected to the first air groove 21, and the second air guide surface 92 is connected to the second air groove 22. The included angle between the first air guide surface 91 and the second air guide surface 92 is less than 90°.

[0039] Based on the normal operating angle of the refrigerator 12, the first air guide surface 91 is tilted downwards, the second air guide surface 92 is tilted upwards, and the angle between the first air guide surface 91 and the second air guide surface 92 is less than 90°. For example, the angle between the first air guide surface 91 and the second air guide surface 92 can be 80°, 70°, 60°, 50°, 45°, 40°, 30° or 20°, etc.

[0040] The airflow from the freezer compartment 123, passing through the first air duct 51 to the first air guide surface 91, needs to be buffered and deflected before entering the second air duct 52 through the second air guide surface 92. Similarly, the hot and humid air from the variable temperature compartment, after passing through the second air duct 52 to the second air guide surface 92, needs to be buffered and deflected before reaching the first air duct 51, and then through the first air duct 51 to reach the first electric damper 401. In this way, the hot and humid air from the variable temperature compartment is less likely to reach the first electric damper 401, and is less likely to freeze on the first electric damper 401.

[0041] In one possible implementation, please refer again. Figure 6 and Figure 7 The air duct plate 2 also includes a return air section 11, which is located on the first surface 201. At least part of the air inlet 10 is formed between the return air section 11 and the air guide section 9. A return air cavity 1111 is formed between the return air section 11 and the first air duct cover 3. The return air cavity 1111 is connected to both the first air duct 51 and the second air duct 52. The return air section 11 includes a first return air surface 111, which is inclined. The inclination direction of the first return air surface 111 is the same as the inclination direction of the second air guide surface 92.

[0042] The hot and humid air from the variable temperature chamber reaches the second air guide surface 92 through the second air duct 52, then passes through the first return air surface 111 to the return air cavity 1111. After being buffered by the return air cavity 1111, it still needs to reach the first air guide surface 91 and the first air duct 51 before reaching the first electric damper 401. In other words, the hot and humid air from the variable temperature chamber flows obliquely downwards along the second air duct 52, is buffered by the return air cavity 1111, and then flows obliquely upwards through the first air duct 51 before reaching the first electric damper 401. This further increases the difficulty for the hot and humid air from the variable temperature chamber to reach the first electric damper 401, making it less likely for ice to form on the first electric damper 401.

[0043] In one possible implementation, please refer again. Figure 6 and Figure 7 The air guide section 9 has a wedge-shaped structure, and its thickness gradually increases along the direction from the first surface 201 to the second surface 202.

[0044] That is, the first air guide surface 91 of the air guide section 9 is inclined downward, and the second air guide surface 92 is inclined upward. In this way, it is more difficult for the hot and humid air in the variable temperature chamber 122 to reach the first electric damper 401, and it is less likely to freeze on the first electric damper 401.

[0045] In one possible implementation, please refer again. Figure 5The refrigerator air duct structure also includes a third air duct cover 1. The first surface 201 is also provided with a third air duct 23 and a fourth air duct 24 that are connected to each other. A third air duct 53 is formed between the first air duct cover 3 and the third air duct 23. A fourth air duct 54 is formed between the third air duct cover 1 and the fourth air duct 24. The fourth air duct 54 is connected to the third air duct 53 and is connected to the refrigerator compartment 121.

[0046] The electric damper assembly 4 also includes a second electric damper 402, which is located in the third air duct 53. The second electric damper 402 can allow the air from the third air duct 53 to enter the fourth air duct 54, or the second electric damper 402 can block the air from the third air duct 53 from entering the fourth air duct 54.

[0047] The opening and closing of the second electric damper 402 can be controlled by conventional methods. When the second electric damper 402 is open, the air from the freezer compartment 123 can enter the refrigerator compartment 121 through the third air duct 53 and the fourth air duct 54 in sequence. When the second electric damper 402 is closed, the air from the freezer compartment 123 cannot enter the refrigerator compartment 121 through the third air duct 53 and the fourth air duct 54.

[0048] The first electric damper 401 and the second electric damper 402 can be controlled independently in a conventional manner. In this way, the interconnected first air duct 51 and second air duct 52 are independent of the interconnected third air duct 53 and fourth air duct 54. That is, the variable temperature compartment air duct and the refrigerator compartment air duct are independent of each other. This allows for more precise temperature control of the variable temperature compartment and the refrigerator compartment 121, thereby improving the user experience of the corresponding refrigerator 12.

[0049] In one possible implementation, please refer to Figure 2 , Figures 8-9 The first air duct cover 3 is also provided with a first notch 32, and the third air duct 53 and the fourth air duct 54 are connected through the first notch 32.

[0050] The air in the third air duct 53 can enter the fourth air duct 54 through the first notch 32. The first air duct cover 3 can block the air in the first air duct 51 from entering the third air duct 53 and the fourth air duct 54. In this way, the independence of the variable temperature chamber air duct and the cold storage chamber air duct can be better, thereby further improving the accuracy of independent control of the temperature of the variable temperature chamber and the cold storage chamber 121.

[0051] Optionally, the first surface 201 is also provided with a dividing ridge 6, which divides the fourth air duct 24 into a first sub-air duct 241 and a second sub-air duct 242. The cover of the fourth air duct 54 and the first sub-air duct 241 enclose each other to form the first sub-air duct 541, and the cover of the fourth air duct 54 and the second sub-air duct 242 enclose each other to form the second sub-air duct 542.

[0052] The first sub-air duct 541 and the second sub-air duct 542 can be located on both sides of the refrigerator 12, so that the air passing through the first sub-air duct 541 and the second sub-air duct 542 can reach both sides of the refrigerator 12, thereby improving the temperature uniformity of the refrigerator 12 and thus improving the reliability of the refrigerator 12.

[0053] In one possible implementation, please refer to Figure 2 , Figures 8-9 The first air duct cover 3 is also provided with a wire harness hole 31, which is connected to the first air duct 51.

[0054] The wiring harness can reach the electric damper assembly 4 through the wiring harness hole 31, which makes it easier to provide power to the electric damper assembly 4 and to control the electric damper assembly 4.

[0055] Optionally, please see Figure 6 , Figures 10-11 The second air duct cover 7 is also provided with a first air outlet 71, which is connected to the second air duct 52 and the variable temperature chamber 122.

[0056] There can be multiple first air outlets 71, for example, there can be two first air outlets 71. The air from the second air duct 52 can enter the variable temperature chamber 122 through the first air outlets 71.

[0057] Optionally, the second surface 202 also has a first mounting protrusion 25 and a second mounting protrusion 26 facing the second air duct 22, and the side of the second air duct cover 7 facing the second surface 202 has a first mounting groove 72 and a second mounting groove 73. The first mounting protrusion 25 is engaged with the first mounting groove 72, and the second mounting protrusion 26 is engaged with the second mounting groove 73.

[0058] When it is necessary to install the second duct cover 7 on the second surface 202, the first mounting groove 72 can be engaged with the first mounting protrusion 25, and the second mounting groove 73 can be engaged with the second mounting protrusion 26. In this way, it is easier to install the second duct cover 7 on the duct plate 2.

[0059] In one possible implementation, please refer to Figure 3 , Figure 5 , Figures 12-13 The air duct plate 2 also includes a mounting block 8 and a mounting slope 83 located on the first surface 201. The mounting block 8 is provided with a first slot 82. The electric damper assembly 4 includes a first snap-fit ​​protrusion 41 and a pressing surface 42. The first snap-fit ​​protrusion 41 and the first slot 82 snap into each other, and the pressing surface 42 and the mounting slope 83 press against each other.

[0060] By engaging the first snap-fit ​​protrusion 41 with the first snap-fit ​​groove 82, the electric damper assembly 4 can be installed on the duct plate 2. When the electric damper assembly 4 is installed on the duct plate 2, the abutting surface 42 and the mounting inclined surface 83 abut against each other. In this way, the electric damper assembly 4 can be installed on the duct plate 2 more quickly and stably.

[0061] In one possible implementation, please refer to Figure 3 , Figure 5 , Figures 8-9 The mounting block 8 has a second snap-fit ​​protrusion 81 on the side facing the first air duct 51. The first air duct cover 3 has a second snap-fit ​​groove 33 and a third snap-fit ​​groove 34 connected to each other on the side facing the first surface 201. The third snap-fit ​​groove 34 is located inside the second snap-fit ​​groove 33. The second snap-fit ​​groove 33 is snapped into the mounting block 8, and the third snap-fit ​​groove 34 is snapped into the second snap-fit ​​protrusion 81.

[0062] The first air duct cover 3 has a first sealing surface 35 on the side facing the first surface 201, and the electric damper assembly 4 has a second sealing surface 43 on the side facing the first air duct cover 3. The second sealing surface 43 and the first sealing surface 35 abut against each other.

[0063] The area of ​​the third slot 34 is smaller than that of the second slot 33. When the first duct cover 3 needs to be installed on the duct plate 2, the second slot 33 can be aligned with the mounting block 8, and then the first duct cover 3 can be pressed towards the duct plate 2 until the mounting block 8 and the second slot 33 are engaged, and the second engaging protrusion 81 and the third slot 34 are engaged, and the second sealing surface 43 and the first sealing surface 35 abut against each other. In this way, the first duct cover 3 can be installed on the duct plate 2 more quickly and stably.

[0064] Alternatively, the first duct cover 3 can be fixed to the duct plate 2 with screws. This can further improve the stability between the first duct cover 3 and the duct plate 2.

[0065] Optionally, the top surface of the electric damper assembly 4 is tilted, and the tilt angle can be 20°. The electric damper assembly 4 is designed with a heating wire inside, which avoids reliability failures caused by water dripping from the freezer compartment 123 onto the damper in extreme cases, so that the water can flow away quickly and is less likely to freeze.

[0066] For example, the electric damper assembly 4 can be set to open for 30 seconds every 30 minutes. Before each opening and closing of the electric damper assembly 4, the control board sends a command to activate the heating wire and preheat the electric damper assembly 4 for 3 minutes. This can prevent the electric damper assembly 4 from being closed for a long time at low ambient temperatures, which would cause water droplets to adhere to the damper assembly 4 and freeze due to the uncertainty of the water flow direction.

[0067] The inclined placement of the electric damper can increase the condensate drainage speed. The control rules include periodic opening and closing and preheating programs. Corresponding solutions and measures can be designed for various unexpected situations, which can minimize the failure rate of the electric damper and improve the user experience.

[0068] In summary, this invention divides the air duct connecting the freezer compartment 123 and the variable temperature compartment into a first air duct 51 and a second air duct 52, and sets an angle between the first air duct 51 and the second air duct 52. This reduces the risk of hot and humid air from rising into the first electric damper 401 in the variable temperature compartment 122, thereby reducing the risk of reliability failures such as damper freezing and jamming. This invention uses an upper and lower branched airflow structure (i.e., the angle between the first air duct 51 and the second air duct 52) ​​at the air outlet of the variable temperature compartment 122, replacing the traditional straight-in-straight-out airflow path. Even if problems such as rising hot air and high humidity occur, this design makes it difficult for hot and humid air to come into contact with the electric damper assembly 4, thus ensuring the reliability of the electric damper assembly 4 and meeting the differentiated storage needs of high-end users in the niche market.

[0069] In one possible implementation, please refer to Figures 14-18 The present invention also provides a refrigeration device, which includes a refrigerator compartment 121, a variable temperature compartment 122 and a freezer compartment 123. The refrigeration device includes the refrigerator air duct structure, partition 13 and flip cover 14 of the present application.

[0070] At least part of the refrigerator's air duct structure is located in the variable temperature compartment 122; the partition 13 is located between the variable temperature compartment 122 and the refrigerator compartment 121; the flip cover 14 is connected to the guide rail of the variable temperature compartment 122.

[0071] The refrigeration equipment may include refrigerators 12, freezers, etc.

[0072] After the partition 13 is completely covered with sealing sponge along its edge, the partition 13 is installed in the upper part of the refrigerator compartment 121 of the refrigerator 12. At the same time, after installing the shock-absorbing pad at the hole of the flip cover 14, it is inserted into the guide rail of the variable temperature compartment 122 along the hole of the flip cover 14.

[0073] Thus, the partition 13 of the variable temperature compartment 122 adopts a foam component insulation structure and is sealed with sponge on all sides, forming a truly independent variable temperature compartment 122. This blocks the heat exchange between the refrigerator compartment 121 and the variable temperature compartment 122, making the temperature control of the variable temperature compartment 122 more precise. The front of the variable temperature compartment 122 is designed with a flip cover 14 for easy access to food. The front of the flip cover 14 has a frosted finish to prevent condensation from forming on the cover in extreme cases. This allows it to meet the different temperature zones of soft freezing and refrigeration, thus satisfying the diverse needs of different users.

[0074] In addition, the refrigeration equipment includes the refrigerator air duct structure of this application, which greatly improves the reliability and temperature control accuracy of the electric damper of the refrigeration equipment, and avoids a series of refrigeration failures caused by ice formation on the electric damper to the greatest extent, thereby improving the reliability and market competitiveness of the refrigeration equipment.

[0075] The above are merely various embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A refrigerator air duct structure, characterized in that, The refrigerator air duct structure includes: The air duct plate (2) includes a first surface (201) and a second surface (202) arranged opposite to each other along the thickness direction of the air duct plate (2). The first surface (201) is provided with a first air groove (21) which is connected to the freezer compartment (123). The second surface (202) is provided with a second air groove (22) which is connected to the variable temperature compartment (122). The air duct plate (2) is also provided with an air inlet (10) that connects the first air groove (21) and the second air groove (22). The airflow direction of the air in the first air groove (21) is different from the airflow direction of the air in the second air groove (22). The first air duct cover (3) is installed on the first surface (201), and the first air duct cover (3) and the first air groove (21) enclose to form the first air duct (51); The second air duct cover (7) is installed on the second surface (202). The second air duct cover (7) and the second air groove (22) enclose each other to form a second air duct (52). The second air duct (52) is connected to the first air duct (51) through the air inlet (10). An electric damper assembly (4) is installed on the first surface (201). The electric damper assembly (4) includes a first electric damper (401). The first electric damper (401) is installed in the first air duct (51). The first electric damper (401) can allow the air from the first air duct (51) to enter the second air duct (52), or the first electric damper (401) can block the air from the first air duct (51) from entering the second air duct (52).

2. The refrigerator air duct structure according to claim 1, characterized in that, The air duct plate (2) includes an air guide section (9), which is located between the first air duct (51) and the second air duct (52). The air guide section (9) includes a first air guide surface (91) and a second air guide surface (92) arranged opposite to each other. The first air guide surface (91) is connected to the first air groove (21), and the second air guide surface (92) is connected to the second air groove (22). The included angle between the first air guide surface (91) and the second air guide surface (92) is less than 90°.

3. The refrigerator air duct structure according to claim 2, characterized in that, The air duct plate (2) further includes a return air section (11), which is located on the first surface (201). The return air section (11) and the air guide section (9) form at least a portion of the air inlet (10). The return air section (11) and the first air duct cover (3) form a return air cavity (1111). The return air cavity (1111) is connected to both the first air duct (51) and the second air duct (52). The return air section (11) includes a first return air surface (111), which is inclined. The inclination direction of the first return air surface (111) is the same as the inclination direction of the second air guide surface (92).

4. The refrigerator air duct structure according to claim 3, characterized in that, The air guide (9) has a wedge-shaped structure, and the thickness of the air guide (9) gradually increases along the direction from the first surface (201) to the second surface (202).

5. The refrigerator air duct structure according to claim 1, characterized in that, The refrigerator air duct structure also includes a third air duct cover (1). The first surface (201) is also provided with a third air groove (23) and a fourth air groove (24) that are connected to each other. A third air duct (53) is formed between the first air duct cover (3) and the third air groove (23). A fourth air duct (54) is formed between the third air duct cover (1) and the fourth air groove (24). The fourth air duct (54) is connected to the third air duct (53) and is connected to the refrigerator compartment (121). The electric damper assembly (4) further includes a second electric damper (402), which is located in the third air duct (53). The second electric damper (402) can allow the air from the third air duct (53) to enter the fourth air duct (54), or the second electric damper (402) can block the air from the third air duct (53) from entering the fourth air duct (54).

6. The refrigerator air duct structure according to claim 5, characterized in that, The first air duct cover (3) is also provided with a first notch (32), and the third air duct (53) and the fourth air duct (54) are connected through the first notch (32); The first surface (201) is also provided with a dividing ridge (6), which divides the fourth air duct (24) into a first sub-air duct (241) and a second sub-air duct (242). The cover of the fourth air duct (54) and the first sub-air duct (241) enclose to form the first sub-air duct (541), and the cover of the fourth air duct (54) and the second sub-air duct (242) enclose to form the second sub-air duct (542).

7. The refrigerator air duct structure according to claim 1, characterized in that, The first air duct cover (3) is also provided with a wire harness hole (31), which is connected to the first air duct (51); the second air duct cover (7) is also provided with a first air outlet (71), which is connected to the second air duct (52) and the first air outlet (71) is connected to the variable temperature chamber (122). The second surface (202) also has a first mounting protrusion (25) and a second mounting protrusion (26) facing the second air duct (22). The second air duct cover (7) has a first mounting groove (72) and a second mounting groove (73) on the side facing the second surface (202). The first mounting protrusion (25) is engaged with the first mounting groove (72), and the second mounting protrusion (26) is engaged with the second mounting groove (73).

8. The refrigerator air duct structure according to claim 1, characterized in that, The air duct plate (2) also includes a mounting block (8) and a mounting slope (83) located on the first surface (201). The mounting block (8) is provided with a first slot (82). The electric damper assembly (4) includes a first snap-fit ​​protrusion (41) and a pressing surface (42). The first snap-fit ​​protrusion (41) snaps into the first slot (82), and the pressing surface (42) presses against the mounting slope (83).

9. The refrigerator air duct structure according to claim 8, characterized in that, The mounting block (8) has a second snap-fit ​​protrusion (81) on the side facing the first air duct (51). The first air duct cover (3) has a second snap-fit ​​groove (33) and a third snap-fit ​​groove (34) connected to each other on the side facing the first surface (201). The third snap-fit ​​groove (34) is located in the second snap-fit ​​groove (33). The second snap-fit ​​groove (33) is snapped into the mounting block (8). The third snap-fit ​​groove (34) is snapped into the second snap-fit ​​protrusion (81). The first air duct cover (3) has a first sealing surface (35) on the side facing the first surface (201), and the electric damper assembly (4) has a second sealing surface (43) on the side facing the first air duct cover (3), and the second sealing surface (43) abuts against the first sealing surface (35).

10. A refrigeration device, characterized in that, The refrigeration equipment includes a refrigerator compartment (121), a variable temperature compartment (122), and a freezer compartment (123). The refrigeration equipment includes: The refrigerator air duct structure according to any one of claims 1-9, wherein at least a portion of the refrigerator air duct structure is located in the variable temperature compartment (122). A partition (13) is located between the variable temperature chamber (122) and the cold storage chamber (121); The flip cover (14) is connected to the guide rail of the variable temperature chamber (122).

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