Freezing air duct device and refrigerator

Abstract

The invention discloses a freezing air duct device and a refrigerator. The freezing air duct device comprises an air duct assembly, an air outlet assembly and an air guide assembly which are connected with one another. The air outlet assembly comprises a first air outlet structure and a second air outlet structure. The first air outlet structure is used for conveying cold air to the upper drawer. The air outlet direction of the second air outlet structure inclines downwards relative to the horizontal plane, and the second air outlet structure is used for conveying cold air to the lower drawer. Thus, by adding the air guide assembly and changing the air outlet direction of the second air outlet structure, when the freezing air duct device is applied to the cross refrigerator, cold air is guided to the lower drawer through the air guide effect of the back of the upper drawer and the air guide assembly, and therefore the requirement for the air inlet amount is met. When the freezing air duct device is applied to the French refrigerator, air outlet of the second air outlet structure faces the space between the lower-layer drawer and the upper-layer drawer, cold air can directly enter the lower-layer drawer, and therefore the requirement for the air inlet amount is met. Therefore, the freezing air duct device not only can be matched with the cross refrigerator, but also can meet the requirements of the French refrigerator.

Description

Technical Field

[0001] This application relates to the field of refrigeration technology, and more particularly to a refrigeration duct device and a refrigerator. Background Technology

[0002] In modern home and business environments, refrigerators, as core household appliances, directly impact food preservation and user experience through their freezing function. Cross-door refrigerators (multi-door design with separate freezer and refrigerator compartments) and French door refrigerators (with an upper refrigerator compartment and a lower freezer compartment, typically featuring multiple drawers) are two mainstream designs.

[0003] In a cross-hatched refrigerator, the freezer drawers have a uniform height distribution, while in a French door refrigerator, the lower freezer drawer is significantly taller than the top and upper drawers, and there is a gap between the top and upper drawers formed by a central beam structure. This structural difference means that the freezer air duct devices of the two types of refrigerators are not interchangeable, resulting in higher mold development costs.

[0004] Therefore, developing a refrigeration air duct device that can adapt to both cross-type and French-type refrigerators has become a key technological direction for improving product competitiveness and reducing production costs. Summary of the Invention

[0005] This application provides a refrigeration air duct device and a refrigerator, which can be adapted to both cross-shaped refrigerators and French-style refrigerators.

[0006] In a first aspect, this application provides a refrigeration duct device, comprising:

[0007] Air duct components;

[0008] The air outlet assembly is connected to the air duct assembly. The air outlet assembly includes:

[0009] First air outlet structure;

[0010] The second air outlet structure is connected to the air duct assembly. The second air outlet structure is located below the first air outlet structure. Along the depth direction, the second air outlet structure and the first air outlet structure are located in front of the air duct assembly. The air outlet direction of the second air outlet structure is inclined downward relative to the horizontal surface. The second air outlet structure is used to deliver cold air to the lower drawer of the refrigerator, and the first air outlet structure is used to deliver cold air to the upper drawer adjacent to the lower drawer of the refrigerator.

[0011] An air guide assembly is connected to the air duct assembly. The air guide assembly is located at the lower part of the air duct assembly and extends forward.

[0012] When the freezer duct system is applied to a cross-shaped refrigerator, the air from the second air outlet structure enters the lower drawer through the back of the upper drawer and the air guide assembly; when the freezer duct system is applied to a French door refrigerator, the air from the second air outlet structure is directed towards the area between the lower and upper drawers.

[0013] The refrigeration air duct device provided in this application includes an interconnected air duct assembly, an air outlet assembly, and an air guide assembly. The air outlet assembly includes a first air outlet structure and a second air outlet structure. The first air outlet structure is used to deliver cold air to the upper drawer. The air outlet direction of the second air outlet structure is inclined downwards relative to the horizontal plane, and the second air outlet structure is used to deliver cold air to the lower drawer. When the refrigeration air duct device is applied to a cross-type refrigerator, the air outlet of the second air outlet structure enters the lower drawer through the back of the upper drawer and the air guide assembly. When the refrigeration air duct device is applied to a French door refrigerator, the air outlet of the second air outlet structure is directed between the lower drawer and the upper drawer. In this way, by adding the air guide assembly and changing the air outlet direction of the second air outlet structure, when the refrigeration air duct device is applied to a cross-type refrigerator, the back of the upper drawer and the air guide assembly guide the cold air to the lower drawer, thereby meeting the air intake requirements. When the refrigeration air duct device is applied to a French door refrigerator, the air outlet of the second air outlet structure is directed between the lower drawer and the upper drawer, and the cold air can directly enter the lower drawer, thereby meeting the air intake requirements. Therefore, the refrigeration air duct device can be adapted to both cross-type refrigerators and French-style refrigerators.

[0014] In some embodiments, the second air outlet structure includes:

[0015] The top wall is connected to the air duct assembly. The extended plane of the top wall is inclined relative to the horizontal plane. The end of the top wall that is close to the air duct assembly along the depth direction is located above the end that is away from the air duct assembly.

[0016] The bottom wall is connected to the air duct assembly and is located below the top wall. At least a portion of the bottom wall extends in a direction parallel to the extending plane of the top wall.

[0017] Two sidewalls are arranged opposite each other and spaced apart along the width direction. The sidewalls are located between the top wall and the bottom wall and are connected to the top wall and the bottom wall respectively.

[0018] When the freezer air duct device is applied to a cross-shaped refrigerator, the extended surface of the center plane of the second air outlet structure intersects with the upper drawer; when the freezer air duct device is applied to a French door refrigerator, the center plane of the second air outlet structure passes between the lower drawer and the upper drawer.

[0019] The center plane of the second air outlet structure is parallel to the extension plane of the top wall, and along the height direction, the extension plane of the center plane of the second air outlet structure is located between the top wall and the bottom wall.

[0020] Thus, when the freezer air duct system is applied to a cross-type refrigerator, the air blown from the second air outlet structure impacts the back of the upper drawer and then flows downwards along the profile of the upper drawer's back. The air exits the surface of the upper drawer at the bottom corner and then enters the lower drawer along the air guide assembly. When the freezer air duct system is applied to a French door refrigerator, the air blown from the second air outlet structure can directly enter the lower drawer.

[0021] In some embodiments, when the freezer duct device is applied to a cross-shaped refrigerator, the included angle between the extended plane of the top wall and the extended plane of the back panel of the upper drawer. Greater than 0° and less than 70°.

[0022] In this way, when the angle τ between the extended plane of the top wall and the extended plane of the back panel of the upper drawer is greater than 0° and less than 70°, the air intake of the lower drawer of the cross-shaped refrigerator is greater than 4m³. 3 / h, thus meeting the usage requirements.

[0023] In some embodiments, the distance n between the bottom edge of the upper drawer facing the air duct assembly and the air duct assembly is greater than [missing information]. ;

[0024] The dimension of the air outlet cavity of the second air outlet structure along the first direction is perpendicular to the air outlet direction of the second air outlet structure and passes through the top and bottom walls of the second air outlet structure.

[0025] In this way, the larger gap between the edge of the air duct assembly and the air duct assembly itself allows the cold air discharged from the air outlet of the second air outlet structure to quickly pass through the gap between the edge of the air duct assembly and the air duct assembly into the lower drawer.

[0026] In some embodiments, when the refrigeration duct device is applied to a French refrigerator;

[0027]

[0028]

[0029]

[0030] The distance along the depth direction between the bottom of the upper drawer and the top wall of the second air outlet structure;

[0031] The dimension of the air outlet cavity of the second air outlet structure along the air outlet direction;

[0032] The angle between the air outlet direction of the second air outlet structure and the horizontal plane;

[0033] The angle between the direction from the top wall of the second air outlet structure away from the end of the upper drawer to the bottom of the upper drawer and the horizontal plane;

[0034] The distance along the depth direction between the top of the lower drawer and the bottom wall of the second air outlet structure;

[0035] The dimension along the depth of the bent portion of the first back panel of the lower drawer facing the air duct assembly;

[0036] The distance along the height between the bottom wall of the second air outlet structure facing the lower drawer and the bottom of the air inlet area of ​​the lower drawer.

[0037] In this way, the air intake of the lower drawer of the F-type refrigerator is greater than 4m³. 3 / h, thus meeting the usage requirements.

[0038] In some embodiments, the air duct assembly includes a front cover and a rear cover that are interconnected, the front cover and the rear cover forming an air duct cavity;

[0039] The top wall is connected to the front cover, the bottom wall is connected to the rear cover, and the air outlet cavity of the second air outlet structure is connected to the air duct cavity.

[0040] In this way, compared with related technologies where the top wall is connected to the front cover and the bottom wall is connected to the front cover, the air volume entering the second air outlet structure from the air duct cavity in this embodiment is larger, which helps to ensure the air intake volume of the lower drawer.

[0041] In some embodiments, the bottom wall includes a first connecting portion and a second connecting portion, the second connecting portion being connected to one side of the first connecting portion along the extending direction; the extending direction of the first connecting portion is parallel to the horizontal plane, and the extending direction of the second connecting portion is parallel to the extending plane of the top wall.

[0042] In this way, compared to related technologies where the bottom wall gradually increases in height from the side away from the drawer assembly to the side closer to the drawer assembly along the depth direction, the bottom wall in this embodiment can effectively prevent the air velocity at the air outlet from being too fast while ensuring the mold's demolding, thus preventing a strong Coanda effect with the bottom of the upper drawer and reducing the air intake of the lower drawer.

[0043] In some embodiments, the air guiding assembly includes an air guiding plate;

[0044] When the freezer air duct device is applied to a cross-shaped refrigerator, the air guide plate is located above the lower drawer and extends forward along the depth direction.

[0045] In this way, the structure of the air guide plate is relatively simple and easy to manufacture. Moreover, the air guide plate extends forward along the depth direction to introduce cold air into the lower drawer, resulting in a better air guiding effect.

[0046] In some embodiments, the refrigeration duct device further includes:

[0047] A drainage structure is located at the bottom of the second air outlet structure. The drainage structure is connected to the second air outlet structure and the air duct assembly, and is connected to the outside of the air duct assembly and the refrigeration air duct device.

[0048] The air outlet direction of the drainage structure is parallel to the horizontal plane.

[0049] By placing the drainage structure at the bottom of the second air outlet structure, it is easier to deliver the cold air leaking from the drainage structure to the lower drawer, thereby increasing the air intake of the lower drawer.

[0050] Secondly, this application provides a refrigerator, comprising:

[0051] The cabinet has a freezer compartment.

[0052] The refrigeration air duct device provided in the first aspect is located inside the refrigeration chamber;

[0053] The upper drawer is located in the freezer compartment, and is situated on the front side of the freezer air duct system along its depth direction.

[0054] The lower drawer is located in the freezer compartment. The lower drawer is located on the front side of the freezer air duct device along the depth direction, and the lower drawer is located below the upper drawer.

[0055] The refrigerator provided in this application embodiment, by setting the freezing air duct device provided in the first aspect, can be adapted to both cross-shaped refrigerators and French-shaped refrigerators, reducing mold costs and thus helping to reduce the overall cost.

[0056] In some embodiments, the lower drawer includes:

[0057] The front bulkhead has a rear opening along the depth direction;

[0058] The first back panel is disposed on the rear side of the front bulkhead along the depth direction to close the opening. The first back panel includes a bent portion, a first extension portion, a second extension portion and a third extension portion arranged sequentially along the height direction. The air intake area is located at the top of the bent portion.

[0059] The angle between the extension plane of the inner wall of the first extension and the extension plane of the inner wall of the second extension is less than 180° and greater than 90°.

[0060] The angle between the extension plane of the inner wall of the second extension and the extension plane of the inner wall of the third extension is greater than 180° and less than 270°.

[0061] This allows the Coanda effect to be utilized, enabling the cold air to move along the first and second extensions of the lower drawer. The cold air can then detach from the wall at the junction of the second and third extensions and enter the central area inside the lower drawer. Attached Figure Description

[0062] Figure 1 This is a structural diagram of the freezing air duct device and drawer assembly in a cross-shaped refrigerator in related technologies.

[0063] Figure 2 This is a structural schematic diagram of the freezer air duct device and the drawer assembly in a French-style refrigerator in related technologies;

[0064] Figure 3 This is a structural diagram of the freezing air duct device in a cross-shaped refrigerator and the drawer assembly in a French-style refrigerator in related technologies.

[0065] Figure 4 This is a structural diagram of the freezer air duct device in a French-style refrigerator and the drawer assembly in a cross-shaped refrigerator in related technologies.

[0066] Figure 5 A schematic diagram of a refrigerator provided in an embodiment of this application;

[0067] Figure 6 Another structural schematic diagram of the refrigerator provided in this application embodiment;

[0068] Figure 7 This is a schematic diagram of the structure of the refrigeration duct device provided in the embodiments of this application;

[0069] Figure 8 for Figure 7 The main view;

[0070] Figure 9 for Figure 8 A cross-sectional view along the AA direction;

[0071] Figure 10 for Figure 8 A magnified view of a section at point B in the middle;

[0072] Figure 11 This is a schematic diagram of the structure of the refrigeration air duct device provided in the embodiments of this application when applied to a cross-shaped refrigerator;

[0073] Figure 12 for Figure 11 The main view;

[0074] Figure 13 for Figure 12 A cross-sectional view along the CC direction;

[0075] Figure 14 for Figure 13 A magnified view of a section at point D;

[0076] Figure 15 A schematic diagram of the structure of the refrigeration air duct device provided in the embodiments of this application when applied to a French refrigerator;

[0077] Figure 16 for Figure 15 The main view;

[0078] Figure 17 for Figure 16 A sectional view along the EE direction;

[0079] Figure 18 for Figure 17 A magnified view of a section at point F in the middle;

[0080] Figure 19 This is a schematic diagram of the structure of the lower drawer of a French-style refrigerator provided in an embodiment of this application;

[0081] Figure 20 for Figure 19 A sectional view;

[0082] Figure 21 for Figure 20 A magnified view of a section at point G in the middle;

[0083] Figure 22 A diagram showing the positional relationship between the second air outlet structure and the upper drawer when the refrigeration air duct device provided in this application is applied to a cross-shaped refrigerator;

[0084] Figure 23 Angle A graph showing the relationship between the air intake volume of the lower drawer of a cross-shaped refrigerator and the air intake volume of the lower drawer.

[0085] Figure 24 A diagram showing the positional relationship between the second air outlet structure and the upper drawer when the refrigeration air duct device provided in this application is applied to a cross-shaped refrigerator;

[0086] Figure 25 for A graph showing the relationship between the air intake volume of the lower drawer of a French-style refrigerator;

[0087] Figure 26 for A graph showing the relationship between the air intake volume of the lower drawer of a French-style refrigerator;

[0088] Figure 27 A simulation diagram of a cross-shaped refrigerator provided in the embodiments of this application;

[0089] Figure 28A simulation diagram of a French-style refrigerator provided in the embodiments of this application;

[0090] Figure 29 This is a simulation diagram of a cross-shaped refrigerator in related technologies.

[0091] Explanation of reference numerals in the attached figures:

[0092] 100 - Cabinet; 200 - Door; 300 - Refrigeration air duct device; 310 - Air duct assembly; 311 - Front cover; 312 - Rear cover; 313 - Air duct cavity; 320 - Air outlet assembly; 321 - First air outlet structure; 322 - Second air outlet structure; 3221 - Top wall; 3222 - Bottom wall; 32221 - First connecting part; 32222 - Second connecting part; 3223 - Side wall; 323 - Third Air outlet structure; 330-Air guide assembly; 331-Air guide plate; 340-Drainage structure; 400-Drawer assembly; 410-Lower drawer; 411-Front panel; 412-First back panel; 4121-Bending section; 4122-First extension; 4123-Second extension; 4124-Third extension; 4125-Air inlet area; 420-Upper drawer; 421-Rounded corner; 430-Top drawer. Detailed Implementation

[0093] To make the objectives and implementation methods of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the exemplary embodiments described are only some embodiments of this application, and not all embodiments.

[0094] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0095] The terms "first," "second," "third," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar or related objects or entities, and do not necessarily imply a specific order or sequence, unless otherwise specified. It should be understood that such terms are interchangeable where appropriate.

[0096] The terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclude inclusion, for example, a product or device that includes a series of means is not necessarily limited to all means expressly listed, but may include other means not expressly listed or inherent to such product or device.

[0097] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0098] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0099] Figure 1 This is a schematic diagram of the freezing air duct device and drawer assembly in a cross-shaped refrigerator, both in the relevant technologies.

[0100] See Figure 1 As shown, the drawer assembly in a French door refrigerator includes a lower drawer 410, an upper drawer 420, and a top drawer 430. The freezer air duct system in the French door refrigerator includes a first air outlet structure 321, a second air outlet structure 322, and a third air outlet structure 323. The first air outlet structure 321 supplies cold air to the upper drawer 420. The second air outlet structure 322 supplies cold air to the lower drawer 410. The third air outlet structure 323 supplies cold air to the top drawer 430.

[0101] Figure 2 This is a schematic diagram of the freezing air duct device and drawer assembly in a French-style refrigerator in related technologies.

[0102] See Figure 2 As shown, the drawer assembly in a French-style refrigerator includes a lower drawer 410, an upper drawer 420, and a top drawer 430. The freezer air duct system in the French-style refrigerator includes a first air outlet structure 321, a second air outlet structure 322, and a third air outlet structure 323. The first air outlet structure 321 supplies cold air to the upper drawer 420. The second air outlet structure 322 supplies cold air to the lower drawer 410. The third air outlet structure 323 supplies cold air to the top drawer 430.

[0103] Figure 3 This is a schematic diagram of the freezing air duct device in a cross-shaped refrigerator and the drawer assembly in a French-style refrigerator in related technologies.

[0104] See Figure 3 As shown, the freezing air duct device of the cross-shaped refrigerator in the related technology is applied to the French-style refrigerator. The lower drawer 410 in the drawer assembly of the French-style refrigerator is relatively high, and the second air outlet structure 322 cannot deliver cold air to the lower drawer 410.

[0105] Figure 4 This is a schematic diagram of the freezing air duct device in a French-style refrigerator and the drawer assembly in a cross-shaped refrigerator in related technologies.

[0106] See Figure 4 As shown, the freezing air duct device of the French refrigerator in the related technology is applied to the cross-shaped refrigerator. The lower drawer 410 in the drawer assembly of the cross-shaped refrigerator is relatively low, and the second air outlet structure 322 delivers a smaller amount of cold air to the lower drawer 410.

[0107] To adapt the freezer air duct device to both cross-type and French door refrigerators, the inventors added an additional air guide component. When used in a French door refrigerator, the air guide component is not connected to the second air outlet structure, thus meeting the air intake requirements of the higher lower drawer. When used in a cross-type refrigerator, the air guide component is connected to the second air outlet structure, lowering the air outlet height, thus meeting the air intake requirements of the lower lower drawer. While adding the air guide component satisfies the airflow requirements of the lower drawer, it requires more time during refrigerator assembly and increases mold costs.

[0108] Based on this, this application provides a freezer air duct device and a refrigerator. The freezer air duct device includes an interconnected air duct assembly, an air outlet assembly, and an air guide assembly. The air outlet assembly includes a first air outlet structure and a second air outlet structure. The first air outlet structure is used to deliver cold air to the upper drawer. The air outlet direction of the second air outlet structure is inclined downwards relative to the horizontal plane, and the second air outlet structure is used to deliver cold air to the lower drawer. When the freezer air duct device is applied to a cross-door refrigerator, the air outlet of the second air outlet structure enters the lower drawer through the back of the upper drawer and the air guide assembly. When the freezer air duct device is applied to a French door refrigerator, the air outlet of the second air outlet structure is directed between the lower drawer and the upper drawer. Thus, by adding the air guide assembly and changing the air outlet direction of the second air outlet structure, when the freezer air duct device is applied to a cross-door refrigerator, the back of the upper drawer and the air guide assembly guide the cold air to the lower drawer, thereby meeting the air intake requirements. When the freezer air duct device is applied to a French door refrigerator, the air outlet of the second air outlet structure is directed between the lower drawer and the upper drawer, and the cold air can directly enter the lower drawer, thereby meeting the air intake requirements. Therefore, the refrigeration air duct device can be adapted to both cross-type refrigerators and French-style refrigerators.

[0109] Figure 5 This is a schematic diagram of a refrigerator provided in an embodiment of this application. Figure 6This is a schematic diagram of another structure of the refrigerator provided in an embodiment of this application.

[0110] See Figure 5 and Figure 6 As shown, this application provides a refrigerator. The refrigerator is a frost-free refrigerator. The refrigerator can be a cross-type refrigerator or a French door refrigerator.

[0111] The refrigerator includes a cabinet 100. The cabinet 100 is configured to form a storage compartment. The cabinet 100 includes an outer shell, a cabinet liner, and a compressor compartment.

[0112] The outer casing has a first receiving cavity with a first pick-up and drop-out port and a second pick-up and drop-out port, which are respectively located on opposite sides of the outer casing in the depth direction of the housing 100. The first pick-up and drop-out port can be located on the front side of the outer casing, and the second pick-up and drop-out port can be located on the rear side of the outer casing. The depth direction is the direction indicated by the Y-axis.

[0113] The compressor compartment is located inside the outer shell, and its opening is opposite to the second access port, allowing the compressor and condenser to be placed inside the compressor compartment via the second access port and the opening. The storage liner is located inside the outer shell and has at least one storage compartment. The storage liner has a third access port, which is opposite to the first access port, allowing items to be placed inside the storage compartment via the third access port and the first access port.

[0114] A foam layer is filled between the inner liner, outer shell, and compressor compartment. The foam layer is used to insulate the storage compartment, thereby ensuring the cooling effect inside the storage compartment.

[0115] The storage room can be at least one, and when there is only one storage room, it can be any one of a refrigerator, freezer, or variable temperature compartment. When there are two or more storage rooms, the multiple storage rooms can include at least one or more of a refrigerator, freezer, or variable temperature compartment.

[0116] The refrigerator includes a door 200, which is rotatably connected to the cabinet 100 to open or close the storage compartment.

[0117] The door 200 is an openable cover located on the front of the cabinet 100 to close and open the storage compartment, allowing users to access items inside. It should be noted that there can be one, two, or more doors 200.

[0118] In some embodiments, the door 200 includes a door body, which is rotatably connected to the housing 100.

[0119] The door body includes a door frame. The door frame may have two side frames arranged opposite each other along the width direction of the door. The door frame may include a connecting plate located between the two side frames. The width direction is the direction shown by the X-axis.

[0120] The door body includes an end cap, which is located at the end of the door frame along the height direction and is rotatably connected to the housing 100. A limiting member is located at the end of the end cap facing away from the door frame along the height direction. The height direction is the direction indicated by the Z-axis.

[0121] Specifically, there are two end caps, including an upper end cap and a lower end cap. The upper end cap is located at the top of the door frame, and the lower end cap is located at the bottom of the door frame.

[0122] The door body includes a panel, which can be attached to the outside of the door frame to form the appearance of the door.

[0123] The door body includes the inner door liner, which is located on the inside of the door frame.

[0124] The door body includes a door insulation component, which can be installed in the gap between the door liner and the door frame. The door insulation component insulates the storage compartment, minimizing heat exchange between the storage compartment and the outside of the refrigerator, thus ensuring the refrigerator's cooling performance. The door insulation component can be a foam layer.

[0125] The door body includes a door liner, which is disposed on the side of the inner door liner opposite to the panel. The door liner is wrapped around the periphery of the inner door liner. The door liner abuts against the housing 100, thereby improving the sealing between the door body 200 and the housing 100.

[0126] Figure 5 This is a schematic diagram of the structure of the refrigeration air duct device provided in the embodiment of this application. Figure 6 This is a schematic diagram of the structure of the refrigeration air duct device provided in the embodiments of this application when applied to a cross-shaped refrigerator. Figure 7 This is a schematic diagram of the structure of the refrigeration air duct device provided in the embodiments of this application when applied to a French refrigerator.

[0127] See Figures 5 to 7 As shown, in some embodiments, the refrigerator includes a freezer duct assembly 300 and a drawer assembly 400. The freezer duct assembly 300 is located in the freezer compartment, thereby dividing the freezer compartment along its depth into a cold source chamber and a mounting chamber. The drawer assembly 400 is mounted in the mounting chamber.

[0128] For example, the drawer assembly 400 includes a lower drawer 410, an upper drawer 420, and a top drawer 430. The depth direction is the direction indicated by the Y-axis. The upper drawer 420 is located at the front of the refrigeration duct assembly 300 along the depth direction. The lower drawer 410 is located at the front of the refrigeration duct assembly 300 along the depth direction and is situated below the upper drawer 420. The top drawer 430 is located above the upper drawer 420.

[0129] A refrigeration system may include a compressor, a condenser, a throttling device, and an evaporator. The compressor, condenser, throttling device, and evaporator are connected in series via piping, through which refrigerant flows. The compressor and condenser may be located in the compressor compartment, while the evaporator may be located in the cold source chamber.

[0130] When the compressor is working, low-temperature, low-pressure refrigerant is drawn into the compressor and compressed into high-temperature, high-pressure superheated gas in the compressor cylinder before being discharged into the condenser. The high-temperature, high-pressure refrigerant gas dissipates heat through the condenser, its temperature continuously decreasing until it is gradually cooled into room-temperature, high-pressure saturated vapor, and further cooled into saturated liquid. The pressure of the refrigerant remains almost constant throughout the condensation process. The throttling device may include a pressure reducing pipe or an electronic expansion valve. This application describes the throttling device as including a pressure reducing pipe, as pressure reducing pipes are low in cost and less prone to malfunction. After condensation, the saturated refrigerant liquid undergoes throttling and pressure reduction through the pressure reducing pipe, transforming the refrigerant into room-temperature, low-pressure wet vapor. Subsequently, the room-temperature, low-pressure wet vapor absorbs heat and vaporizes through the evaporator, not only lowering the temperature of the evaporator and its surroundings but also turning the refrigerant into a low-temperature, low-pressure gas. The evaporator cools the air in the cold source chamber, lowering its temperature. Driven by the fan of the refrigeration duct system 300, the cold air in the cold source chamber flows through the refrigeration duct system 300 to the mounting chamber for the drawer assembly 400, further lowering its temperature. The refrigerant exiting the evaporator returns to the compressor, repeating the process to ensure the evaporator continuously cools the air in the cold source chamber, thus maintaining the mounting chamber at the set temperature.

[0131] Figure 8 for Figure 7 The main view, Figure 9 for Figure 8 A cross-sectional view along the AA direction.

[0132] See Figure 8 and Figure 9 As shown, the refrigeration duct device 300 provided in this application includes a duct assembly 310.

[0133] The air duct assembly 310 includes a front cover plate 311 and a rear cover plate 312 connected to each other, forming an air duct cavity 313. The air duct cavity 313 communicates with the cold source chamber and the mounting chamber of the drawer assembly 400. Cold air from the cold source chamber is transported through the air duct cavity 313 to the mounting chamber and then enters the drawer assembly 400. The front cover plate 311 and the rear cover plate 312 can be connected by snap-fit ​​or fasteners.

[0134] In some embodiments, the air duct assembly 310 includes a fan located within the air duct cavity 313, and the fan is used to drive forced airflow.

[0135] The refrigeration air duct device 300 includes an air outlet assembly 320, which is connected to the air duct assembly 310. Specifically, the air outlet assembly 320 and the air duct assembly 310 can be integrally formed, for example, by injection molding. Alternatively, the air outlet assembly 320 and the air duct assembly 310 can be connected by fasteners such as screws.

[0136] In some embodiments, the air outlet assembly 320 includes a first air outlet structure 321. The first air outlet structure 321 is used to deliver cold air to the upper drawer 420 adjacent to the lower drawer 410 of the refrigerator.

[0137] Figure 10 for Figure 8 A magnified view of a section at point B.

[0138] See Figure 10 As shown, the air outlet assembly 320 includes a second air outlet structure 322, which is connected to the air duct assembly 310. The second air outlet structure 322 is located below the first air outlet structure 321.

[0139] Along the depth direction, the second air outlet structure 322 and the first air outlet structure 321 are located on the front side of the air duct assembly 310. The air outlet direction of the second air outlet structure 322 is inclined downward relative to the horizontal plane. The second air outlet structure 322 is used to deliver cold air to the lower drawer 410 of the refrigerator. Here, the depth direction is the direction shown by the Y-axis.

[0140] See Figure 8 and Figure 9 As shown, the refrigeration duct device 300 includes an air guide assembly 330, which is connected to the duct assembly 310. The air guide assembly 330 is disposed at the lower part of the duct assembly 310 and extends forward. The air guide assembly 330 is used to guide the flow direction of the cold air.

[0141] Figure 11 This is a schematic diagram of the structure of the refrigeration air duct device provided in this application embodiment when applied to a cross-shaped refrigerator. Figure 12 for Figure 11 The main view, Figure 13 for Figure 12 A sectional view along the CC direction. Figure 14 for Figure 13 A magnified view of a section at point D.

[0142] See Figures 11 to 14 As shown, when the freezer air duct device 300 is applied to a cross-shaped refrigerator, the air outlet of the second air outlet structure 322 enters the lower drawer 410 through the back of the upper drawer 420 and the air guide assembly 330.

[0143] The second air outlet structure 322 is located at the rear of the upper drawer 420 along the depth direction (Y-axis direction) of the cabinet 100. The second air outlet structure 322 can be located in the middle of the upper drawer 420. The middle position can be a position not close to the edge along the height direction (Z-axis direction), for example, located at 25%-75% of the height of the upper drawer 420.

[0144] See Figure 14 As shown, the air blown from the second air outlet structure 322 impacts the back of the upper drawer 420, and then flows downward along the profile of the back of the upper drawer 420. The air leaves the surface of the upper drawer 420 at the bottom corner, and then enters the lower drawer 410 along the air guide assembly 330.

[0145] Figure 15 This is a schematic diagram of the structure of the refrigeration air duct device provided in the embodiments of this application when applied to a French refrigerator. Figure 16 for Figure 15 The main view. Figure 17 for Figure 16 A cross-sectional view along the EE direction. Figure 18 for Figure 17 A magnified view of a section at point F.

[0146] See Figures 15 to 18 As shown, when the freezer air duct device 300 is applied to a French-style refrigerator, the air outlet of the second air outlet structure 322 is directed between the lower drawer 410 and the upper drawer 420. The air blown out from the second air outlet structure 322 can directly enter the lower drawer 410.

[0147] It is understood that the freezer duct device 300 provided in this application embodiment includes an interconnected duct assembly 310, an air outlet assembly 320, and an air guide assembly 330. The air outlet assembly 320 includes a first air outlet structure 321 and a second air outlet structure 322. The first air outlet structure 321 is used to deliver cold air to the upper drawer 420. The air outlet direction of the second air outlet structure 322 is inclined downward relative to the horizontal plane, and the second air outlet structure 322 is used to deliver cold air to the lower drawer 410. When the freezer duct device 300 is applied to a cross-type refrigerator, the air outlet of the second air outlet structure 322 enters the lower drawer 410 through the back of the upper drawer 420 and the air guide assembly 330. When the freezer duct device 300 is applied to a French door refrigerator, the air outlet of the second air outlet structure 322 is directed between the lower drawer 410 and the upper drawer 420. Thus, by adding the air guide component 330 and changing the air outlet direction of the second air outlet structure 322, when the freezer duct device 300 is applied to a cross-type refrigerator, the back of the upper drawer 420 and the air guide component 330 guide the cold air to the lower drawer 410, thereby meeting the air intake requirements. When the freezer duct device 300 is applied to a French door refrigerator, the air outlet of the second air outlet structure 322 is directed between the lower drawer 410 and the upper drawer 420, allowing the cold air to directly enter the lower drawer 410, thus meeting the air intake requirements. Therefore, the freezer duct device 300 can be adapted to both cross-type and French door refrigerators.

[0148] See Figure 14 As shown, when the freezer air duct device 300 is applied to a cross-shaped refrigerator, according to the Coanda effect principle, the rounded corner radius at the bottom of the upper drawer 420 is relatively small, which facilitates airflow detachment from the surface of the upper drawer 420 at this location. Therefore, in some embodiments, the bottom edge of the upper drawer 420 is provided with a rounded corner 421, the radius of which is less than 7mm. For example, the radius of the rounded corner 421 is 6mm, 5mm, 4mm, 3mm, 2mm, or 1mm, etc. It can be understood that a radius of not less than 7mm for the rounded corner 421 will enhance the Coanda effect, making it less likely for airflow to detach from the surface of the upper drawer 420 at this location.

[0149] The bottom of the upper drawer 420 is provided with a first rib and a second rib, and the extension directions of the first rib and the second rib form an angle. The first rib and the second rib serve to enhance strength and reduce the Coanda effect, allowing air to escape from the surface of the upper drawer 420.

[0150] Specifically, the first rib extends in the same direction as the Y-axis. There can be multiple first ribs, spaced apart along the width direction (as shown by the X-axis). The second rib extends in the same direction as the X-axis. There can also be multiple second ribs, spaced apart along the width direction (as shown by the Y-axis).

[0151] Figure 19 This is a schematic diagram of the structure of the lower drawer of a French-style refrigerator provided in an embodiment of this application. Figure 20 for Figure 19 sectional view, Figure 21 for Figure 20 A magnified view of a section at point G.

[0152] See Figures 19 to 21 As shown, in some embodiments, the lower drawer 410 includes a front panel 411 and a first back panel 412. The front panel 411 has an opening on its rear side along the depth direction. The first back panel 412 is disposed on the rear side of the front panel 411 along the depth direction to close the opening. Specifically, the front panel 411 and the first back panel 412 can be integrally formed. The first back panel 412 includes a bent portion 4121, a first extension 4122, a second extension 4123, and a third extension 4124 arranged sequentially along the height direction. An air inlet area 4125 is located at the top of the bent portion 4121. The air inlet area 4125 allows cold air to enter the interior of the lower drawer 410.

[0153] See Figure 20 As shown, in some embodiments, the included angle between the extension plane of the inner wall of the first extension 4122 and the extension plane of the inner wall of the second extension 4123 is... The angle is less than 180° and greater than 90°. This facilitates the use of the Coanda effect to move the cold air along the first extension 4122 and the second extension 4123 of the lower drawer 410. Exemplarily, the angle between the extension plane of the inner wall of the first extension 4122 and the extension plane of the inner wall of the second extension 4123... It can be 100°, 110°, 120°, 130°, 140°, 150°, 160° or 170°.

[0154] See Figure 20 As shown, in some embodiments, the angle between the extension plane of the inner wall of the second extension 4123 and the extension plane of the inner wall of the third extension 4124 is... The angle is greater than 180° and less than 270°. This allows the cold air to detach from the wall at the connection between the second extension 4123 and the third extension, and enter the middle area inside the lower drawer 410.

[0155] For example, the angle between the extension plane of the inner wall of the second extension 4123 and the extension plane of the inner wall of the third extension 4124 It can be 190°, 200°, 210°, 220°, 230°, 240°, 250° or 260°.

[0156] See Figure 10As shown, in some embodiments, the second air outlet structure 322 includes a top wall 3221, a bottom wall 3222, and two side walls 3223.

[0157] The top wall 3221 is connected to the air duct assembly 310. The extended plane of the top wall 3221 is inclined relative to the horizontal plane. The end of the top wall 3221 that is close to the air duct assembly 310 along the depth direction is located above the end that is away from the air duct assembly 310.

[0158] It should be noted that the angle ε between the extended plane of the top wall 3221 and the horizontal plane can be the angle between the air outlet direction of the second air outlet structure 322 and the horizontal plane.

[0159] The bottom wall 3222 is connected to the air duct assembly 310 and is located at the bottom of the top wall 3221. At least a portion of the bottom wall 3222 extends parallel to the extending plane of the top wall 3221. Two side walls 3223 are positioned opposite each other and spaced apart along the width direction, located between the top wall 3221 and the bottom wall 3222, and connected to both the top wall 3221 and the bottom wall 3222. The width direction is the direction indicated by the X-axis.

[0160] When the freezer air duct device 300 is applied to a cross-shaped refrigerator, the center surface of the second air outlet structure passes through the upper drawer 420. Thus, the air blown from the second air outlet structure 322 impacts the back of the upper drawer 420 and then flows downwards along the profile of the back of the upper drawer 420. The air exits the surface of the upper drawer 420 at the bottom corner and then enters the lower drawer 410 along the air guide assembly 330.

[0161] When the freezer air duct device 300 is applied to a French-style refrigerator, the center surface of the second air outlet structure passes between the lower drawer 410 and the upper drawer 420. The air blown out from the second air outlet structure 322 can directly enter the lower drawer 410.

[0162] The center plane of the second air outlet structure 322 is parallel to the extended plane of the top wall 3221, and along the height direction, the center plane of the second air outlet structure 322 is located between the top wall 3221 and the bottom wall 3222. Specifically, along the height direction, the center plane of the second air outlet structure 322 can be located at the center of the top wall 3221 and the bottom wall 3222.

[0163] See Figure 10As shown, in some embodiments, the top wall 3221 is connected to the front cover plate 311, the bottom wall 3222 is connected to the rear cover plate 312, and the air outlet cavity of the second air outlet structure 322 is connected to the air duct cavity 313. Compared with related technologies, where the top wall 3221 is connected to the front cover plate 311 and the bottom wall 3222 is connected to the front cover plate 311, the air volume entering the second air outlet structure 322 from the air duct cavity 313 in this embodiment is larger, which helps to ensure the air intake of the lower drawer 410.

[0164] See Figure 10 As shown, in some embodiments, the bottom wall 3222 includes a first connecting portion 32221 and a second connecting portion 32222. The second connecting portion 32222 is connected to one side of the first connecting portion 32221 along its extension direction. The extension direction of the first connecting portion 32221 is parallel to the horizontal plane, and the extension direction of the second connecting portion 32222 is parallel to the extension plane of the top wall 3221.

[0165] Specifically, the first connecting portion 32221 is connected to the rear cover plate 312 on one side along the extending direction, and the second connecting portion 32222 is connected to the first connecting portion 32221 on the other side along the extending direction. Alternatively, the first connecting portion 32221 has a gap with the rear cover plate 312 on one side along the extending direction, the second connecting portion 32222 is connected to the first connecting portion 32221 on the other side along the extending direction, and the second connecting portion 32222 is connected to the rear cover plate 312 through the drainage structure 340.

[0166] Understandably, in related technologies, along the depth direction, the bottom wall 3222 gradually increases in height from the side away from the drawer assembly 400 to the side closer to the drawer assembly 400, while the air outlet cross-section gradually decreases and the air outlet velocity gradually increases. Therefore, compared to related technologies where the bottom wall 3222 gradually increases in height along the depth direction from the side away from the drawer assembly 400 to the side closer to the drawer assembly 400, the bottom wall 3222 in this embodiment can effectively prevent excessively high air velocity at the air outlet from causing a strong Coanda effect with the bottom of the upper drawer 420, thereby reducing the air intake of the lower drawer 410, while ensuring the mold's demolding.

[0167] See Figure 5 , Figure 8 , Figure 9 and Figure 14 As shown, in some embodiments, the air guide assembly 330 includes an air guide plate 331.

[0168] When the freezer air duct device 300 is applied to a cross-shaped refrigerator, the air guide plate 331 is located above the lower drawer 410, and the air guide plate 331 extends forward along the depth direction. The depth direction is the direction shown by the Y-axis.

[0169] Understandably, the air guide plate 331 has a relatively simple structure and is easy to manufacture. Moreover, the air guide plate 331 extends forward along the depth direction to introduce cold air into the lower drawer 410, resulting in a good air guiding effect.

[0170] In other embodiments, along the depth direction, the height of the air guide plate 331 gradually decreases from the side away from the drawer assembly 400 to the side closer to the drawer assembly 400, thereby guiding cold air into the lower drawer 410.

[0171] In some embodiments, the number of air guide plates 331 can be at least two, and the at least two air guide plates 331 are spaced apart along the width direction of the housing 100. The width direction is the direction shown by the X-axis. The number of air guide plates 331 and the number of lower drawers 410 can be configured in a one-to-one correspondence.

[0172] See Figure 8 and Figure 10 As shown, in some embodiments, the refrigeration duct device 300 further includes a drainage structure 340. The drainage structure 340 is used to drain condensate from the duct cavity 313.

[0173] The drainage structure 340 is located at the bottom of the second air outlet structure 322. The drainage structure 340 is connected to the second air outlet structure 322 and the air duct assembly 310, and is connected to the outside of the air duct assembly 310 and the refrigeration air duct device 300.

[0174] The air outlet direction of the drainage structure 340 is parallel to the horizontal plane. The air outlet direction of the drainage structure 340 is as shown by arrow w in the figure. Specifically, the drainage structure 340 outlets air through a drain hole. It can be understood that by placing the drainage structure 340 at the bottom of the second air outlet structure 322, it is beneficial to deliver the leaked cold air from the drainage structure 340 into the lower drawer 410, thereby increasing the air intake of the lower drawer 410.

[0175] Figure 22 A diagram showing the positional relationship between the second air outlet structure 322 and the upper drawer 420 when the refrigeration air duct device provided in this application is applied to a cross-shaped refrigerator.

[0176] See Figure 22 As shown, in some embodiments, when the freezer duct device 300 is applied to a cross-shaped refrigerator, the angle between the extended plane of the top wall 3221 and the extended plane of the back panel of the upper drawer 420 is... Greater than 0° and less than 70°.

[0177] For example, The value can be 5°, 10°, 20°, 30°, 40°, 50°, 60° or 65°.

[0178] Figure 23 This is a graph showing the relationship between the included angle τ and the air intake volume of the lower drawer of a cross-shaped refrigerator.

[0179] See Figure 23 As shown, when the angle τ between the extended plane of the top wall 3221 and the extended plane of the back panel of the upper drawer 420 is greater than 0° and less than 70°, the air intake of the lower drawer 410 of the cross-shaped refrigerator is greater than 4m³. 3 / h, thus meeting the usage requirements.

[0180] See Figure 23 As shown, in some embodiments, the distance n between the bottom edge of the upper drawer 420 facing the air duct assembly 310 and the air duct assembly 310 is greater than h. h is the dimension of the air outlet cavity of the second air outlet structure 322 along a first direction, which is perpendicular to the air outlet direction of the second air outlet structure 322 and passes through the top wall 3221 and bottom wall 3222 of the second air outlet structure 322.

[0181] It is understandable that when n is greater than h, the gap between the edge of the air duct assembly 310 and the air duct assembly 310 is larger, which is conducive to the cooling capacity discharged from the air outlet of the second air outlet structure 322 being able to enter the lower drawer 410 more quickly through the gap between the edge of the air duct assembly 310 and the air duct assembly 310.

[0182] Figure 24 A diagram showing the positional relationship between the second air outlet structure and the upper drawer when the refrigeration air duct device provided in this application is applied to a cross-shaped refrigerator.

[0183] See Figure 10 , Figure 18 and Figure 24 As shown, in some embodiments, when the refrigeration duct device 300 is applied to a French refrigerator.

[0184] The second air outlet structure 322, the upper drawer 420, and the lower drawer 410 should satisfy a certain relationship; otherwise, the air blown out from the second air outlet structure 322 is prone to forming vortices at the rear gap between the upper drawer 420 and the lower drawer 410, affecting the airflow into the lower drawer 410. Therefore, to ensure that more cold air enters the lower drawer 410, the relationship between the second air outlet structure 322, the upper drawer 420, and the lower drawer 410 is established based on the Coanda effect principle and simulation results:

[0185]

[0186]

[0187]

[0188] This is the distance along the depth direction between the lower part of the upper drawer 420 and the top wall 3221 of the second air outlet structure 322. The depth direction is the direction indicated by the Y-axis. The lower part of the upper drawer 420 may be located opposite the end of the top wall 3221 closest to the drawer assembly.

[0189] The dimension of the air outlet cavity of the second air outlet structure 322 along the air outlet direction.

[0190] The angle between the air outlet direction of the second air outlet structure 322 and the horizontal plane.

[0191] For example, The value can range from 20° to 60°. For example, The value can be 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55° or 60°.

[0192] The angle between the direction from the top wall 3221 of the second air outlet structure 322 away from the end of the upper drawer 420 to the bottom of the upper drawer 420 and the horizontal plane.

[0193] The distance along the depth direction is the distance between the upper part of the lower drawer 410 and the bottom wall 3222 of the second air outlet structure 322. The depth direction is the direction shown by the Y-axis. The lower part of the upper drawer 420 may be the position of the bent portion 4121 facing the air duct assembly 310.

[0194] The dimension along the depth direction is the bend 4121 of the first back panel of the lower drawer 410 facing the air duct assembly 310. The depth direction is the direction indicated by the Y-axis.

[0195] The distance along the height direction between the bottom wall 3222 of the second air outlet structure 322 facing the lower drawer 410 and the bottom of the air inlet area 4125 of the lower drawer 410. The height direction is the direction indicated by the Z-axis.

[0196] Figure 25 for A graph showing the relationship between the air intake volume of the lower drawer of a French-style refrigerator and the air intake volume of the lower drawer. Figure 26 for A graph showing the relationship between the air intake volume of the lower drawer of a French-style refrigerator and the air intake volume of the lower drawer.

[0197] See Figure 25 and Figure 26 As shown, the air intake volume of the lower drawer 410 of the refrigerator is greater than 4m³ when the following conditions are met. 3 / h, thus meeting the usage requirements.

[0198]

[0199]

[0200] In some embodiments,

[0201]

[0202] This represents the distance between the second air outlet structure 322 and the first air outlet structure 321 along the height direction. The height direction is the direction indicated by the Z-axis.

[0203] The distance along the depth direction is the distance between the lower part of the upper drawer 420 and the top wall 3221 of the second air outlet structure 322. The depth direction is the direction indicated by the Y-axis.

[0204] The angle between the air outlet direction of the second air outlet structure 322 and the horizontal plane.

[0205] The dimension of the air outlet cavity of the second air outlet structure 322 along the first direction is perpendicular to the air outlet direction of the second air outlet structure 322, and the first direction passes through the top wall 3221 and the bottom wall 3222 of the second air outlet structure 322.

[0206] The distance between the top wall 3221 of the second air outlet structure 322 facing the upper drawer 420 and the bottom of the upper drawer 420 along the height direction. The height direction is the direction indicated by the Z-axis.

[0207] The distance along the height direction between the bottom wall 3222 of the second air outlet structure 322 facing the lower drawer 410 and the bottom of the air inlet area 4125 of the lower drawer 410. The height direction is the direction indicated by the Z-axis. The bottom of the air inlet area 4125 is the top of the bent portion 4121.

[0208] It should be noted that if 'a' is too small, it will cause insufficient airflow to the lower drawer 410 of the French door refrigerator and the cross-type refrigerator. If 'a' is too large, it will cause insufficient airflow to the lower drawer 410 of the French door refrigerator.

[0209] For example, the distance 'a' is set to 160mm. To balance demolding, structural strength, and airflow guidance, the second air outlet structure 322 is extended diagonally downwards by a distance '0' of 23mm along the vertical air outlet plane. The distance 'f' is 15.8mm. It is 40°. d is 25mm, e is 28mm. The angle is 12°, and the angle Ə between the back panel of the upper drawer 420 and the vertical direction is 7°.

[0210]

[0211] The angle between the direction from the top wall 3221 of the second air outlet structure 322 away from the end of the upper drawer 420 to the bottom of the air inlet area 4125 of the lower drawer 410 and the horizontal plane.

[0212] like If the air outlet is too small, the air blown from the second air outlet structure 322 will blow onto the back or bottom of the upper drawer 420 of the refrigerator, making it difficult for the lower drawer 410 of the French door and cross-door refrigerators to draw in air, resulting in insufficient airflow inside the drawer. If the air outlet is too large, although it is beneficial for drawing in air from the lower drawer of the French door refrigerator, it will blow onto the back of the lower drawer 410 of the French door refrigerator, affecting the airflow inside the lower drawer 410 of the French door refrigerator.

[0213] The distance along the depth direction of the upper drawer 420 and the second air outlet structure 322 A larger airflow design is beneficial for air intake in the lower drawer 410 of a French door refrigerator. However, for French door refrigerators, airflow diffuses, resulting in greater air volume loss, thus reducing the amount of air entering the lower drawer 410. Meanwhile, If it is too large, the volume of the upper drawer 420 needs to be reduced. While a smaller airflow rate increases the air volume inside the lower drawer 410, it also results in a higher air velocity within the lower drawer 410. According to the Coanda effect, higher air velocity leads to lower pressure, making it easier for air to adhere to the bottom surface of the upper drawer 420. In addition, The smaller the size, the greater the loss of wind momentum, which is not conducive to air intake in the lower drawer 410 of the cross-shaped refrigerator.

[0214] For example, The value ranges from 30 to 80 mm. For example, The values ​​are 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, 65mm, 70mm, 75mm or 80mm.

[0215] Figure 27 A simulation diagram of a cross-shaped refrigerator provided in the embodiments of this application; Figure 28 A simulation diagram of a French-style refrigerator provided in an embodiment of this application. Figure 29 This is a simulation diagram of a cross-shaped refrigerator in related technologies.

[0216] See Figures 27 to 29As shown, to represent the optimized airflow inside the drawers of the French door and cross-door refrigerators, simulation software was used to simulate the airflow in both refrigerators. The simulation results show that the airflow in the lower drawer 410 of both the French door and cross-door refrigerators meets the requirements.

[0217] See Figure 27 and Figure 29 As shown, the air intake velocity at the initial air intake on the rear side of the lower drawer 410 is increased from 0.85 to 1.15. Therefore, the air velocity inside the lower drawer 410 of the cross-shaped refrigerator provided in this application is improved.

[0218] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0219] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. A refrigerated air duct arrangement, characterized in that The application relates to a refrigeration air duct device (300) comprising: an air duct assembly (310); an air outlet assembly (320) connected with the air duct assembly (310), the air outlet assembly (320) comprising: a first air outlet structure (321); a second air outlet structure (322) connected with the air duct assembly (310), the second air outlet structure (322) being located below the first air outlet structure (321); along the depth direction, the second air outlet structure (322) is located on the front side of the air duct assembly (310) with the first air outlet structure (321), the air outlet direction of the second air outlet structure (322) is downwardly inclined relative to the horizontal plane, the second air outlet structure (322) is used for delivering cold air to the lower drawer (410) of the refrigerator, and the first air outlet structure (321) is used for delivering cold air to the upper drawer (420) of the refrigerator; an air guide assembly (330) connected with the air duct assembly (310), the air guide assembly (330) being arranged at the lower part of the air duct assembly (310) and extending towards the front side; when the refrigeration air duct device (300) is applied to a cross-type refrigerator, the air outlet of the second air outlet structure (322) enters the lower drawer (410) through the back of the upper drawer (420) and the air guide assembly (330); when the refrigeration air duct device (300) is applied to a French-type refrigerator, the air outlet of the second air outlet structure (322) is directed to the area between the lower drawer (410) and the upper drawer (420).

2. The refrigerated air duct arrangement of claim 1, wherein, The second air outlet structure (322) comprises: a top wall (3221) connected with the air duct assembly (310), the extension plane of the top wall (3221) is inclined relative to the horizontal plane, and one end of the top wall (3221) along the depth direction is located above the other end of the top wall (3221) away from the air duct assembly (310); a bottom wall (3222) connected with the air duct assembly (310), the bottom wall (3222) being located below the top wall (3221), and the extension direction of at least part of the bottom wall (3222) is parallel to the extension plane of the top wall (3221); two side walls (3223) oppositely and spacedly arranged along the width direction, the side walls (3223) being located between the top wall (3221) and the bottom wall (3222) and connected with the top wall (3221) and the bottom wall (3222) respectively; when the refrigeration air duct device (300) is applied to a cross-type refrigerator, the extension plane of the central surface of the second air outlet structure (322) intersects the upper drawer (420); when the refrigeration air duct device (300) is applied to a French-type refrigerator, the extension plane of the central surface of the second air outlet structure (322) is located between the lower drawer (410) and the upper drawer (420); wherein the central surface of the second air outlet structure (322) is parallel to the extension plane of the top wall (3221), and along the height direction, the central surface of the second air outlet structure (322) is located between the top wall (3221) and the bottom wall (3222).

3. The refrigerated air duct arrangement of claim 2, wherein, When the freezing air duct device (300) is applied to a cross refrigerator, the included angle between the extension plane of the top wall (3221) and the extension plane of the back plate of the upper layer drawer (420) greater than 0° and less than 70°; And / or, the spacing n between the edge of the bottom of the upper drawer (420) towards the air duct assembly (310) and the air duct assembly (310) is greater than ; The size of the air outlet cavity of the second air outlet structure (322) in a first direction, the first direction being perpendicular to the air outlet direction of the second air outlet structure (322), the first direction passing through the top wall (3221) and the bottom wall (3222) of the second air outlet structure (322).

4. The refrigerated air duct assembly of claim 2, wherein, When the refrigeration air duct device (300) is applied to a French-type refrigerator; a distance between the lower portion of the upper drawer (420) and the top wall (3221) of the second air outlet structure (322) in the depth direction; a size of the air outlet cavity of the second air outlet structure (322) in the air outlet direction; is an angle between the air outlet direction of the second air outlet structure (322) and a horizontal plane; an angle between a direction from an end of a top wall (3221) of the second air outlet structure (322) away from the upper drawer (420) to a bottom of the upper drawer (420) and a horizontal plane; a distance between the upper portion of the lower drawer (410) and the bottom wall (3222) of the second air outlet structure (322) in the depth direction; A size of the bent portion (4121) of the first back plate of the lower drawer (410) in the depth direction toward one end of the air duct assembly (310); The distance between the side of the bottom wall (3222) of the second air outlet structure (322) facing the lower drawer (410) and the bottom of the air inlet area (4125) of the lower drawer (410) in the height direction.

5. The refrigerated air duct assembly of claim 2, wherein, The air duct assembly (310) comprises a front cover plate (311) and a rear cover plate (312) connected to each other, and the front cover plate (311) and the rear cover plate (312) form an air duct cavity (313); The top wall (3221) is connected to the front cover plate (311), the bottom wall (3222) is connected to the rear cover plate (312), and the air outlet cavity of the second air outlet structure (322) is in communication with the air duct cavity (313).

6. The refrigerated air duct arrangement of claim 5, wherein, The bottom wall (3222) comprises a first connecting portion (32221) and a second connecting portion (32222), the second connecting portion (32222) is connected to one side of the first connecting portion (32221) along an extension direction, the extension direction of the first connecting portion (32221) is parallel to a horizontal plane, and the extension direction of the second connecting portion (32222) is parallel to an extension plane of the top wall (3221).

7. The refrigerated air duct arrangement according to any one of claims 1 to 6, characterized in that The air guide assembly (330) comprises an air guide plate (331); When the refrigeration air duct device (300) is applied to a cross-type refrigerator, the air guide plate (331) is located above the lower drawer (410), and the air guide plate (331) extends towards the front side along the depth direction.

8. The refrigerated air duct arrangement according to any one of claims 1 to 6, characterized in that Further comprising: A drainage structure (340) is arranged at the bottom of the second air outlet structure (322), the drainage structure (340) is connected to the second air outlet structure (322) and the air duct assembly (310) respectively, and the drainage structure (340) is in communication with the air duct assembly (310) and the outside of the refrigeration air duct device (300) respectively; The air outlet direction of the drainage structure (340) is parallel to the horizontal plane.

9. A refrigerator characterized by comprising: Comprise: A cabinet (100) is configured with a refrigeration chamber; The refrigeration air duct device (300) according to any one of claims 1 to 8 is located in the refrigeration chamber; An upper drawer (420) is located in the refrigeration chamber, and the upper drawer (420) is located in front of the refrigeration air duct device (300) along the depth direction; A lower drawer (410) is located in the refrigeration chamber, and the lower drawer (410) is located in front of the refrigeration air duct device (300) along the depth direction, and the lower drawer (410) is located below the upper drawer (420).

10. The refrigerator according to claim 9, characterized in that, The lower drawer (410) comprises: A front baffle (411) is arranged at the rear side along the depth direction; A first back plate (412) is arranged at the rear side along the depth direction of the front baffle (411) to close the opening, the first back plate (412) comprises a bending portion (4121), a first extension portion (4122), a second extension portion (4123) and a third extension portion (4124) arranged in sequence along the height direction, and an air inlet area (4125) is located at the top of the bending portion (4121); The included angle between the extension plane of the inner wall of the first extension portion (4122) and the extension plane of the inner wall of the second extension portion (4123) is greater than 90° and less than 180°; An included angle between an extension plane of the inner wall of the second extension part (4123) and an extension plane of the inner wall of the third extension part (4124) is greater than 180° and less than 270°.

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