A drawer assembly and a refrigerator

Abstract

The utility model provides a drawer assembly and refrigerator, drawer assembly includes drawer body and ventilative air duct, the refrigeration chamber for storing goods is defined in the drawer body, is provided with the ventilation air duct in the drawer body, and the ventilation air duct is isolated with the refrigeration chamber arrangement, ventilative air duct sets up in the refrigeration chamber, ventilative air duct has the air inlet and the air outlet, and the air inlet and the air outlet can selectively open and close, when the air inlet and the air outlet are all opened, the air outlet is communicated with the ventilation air duct, and the cooling airflow flows in the air inlet, and a part of cooling airflow passes through the ventilative passage and enters the refrigeration chamber, and another part of cooling airflow flows into the ventilation air duct, to cool the drawer body, in the utility model, the combination of ventilative air duct and ventilation air duct can switch the cooling mode flexibly according to different temperature conditions and the preservation requirement, and the rapid cooling and the moisture preservation are taken into account.

Description

Technical Field

[0001] This utility model belongs to the field of home appliance technology, specifically relating to a drawer assembly and a refrigerator. Background Technology

[0002] In existing refrigerators with sealed drawers, the way cooling air is delivered has significant limitations. Traditional solutions typically employ two extreme methods: one is to blow cooling air directly into the drawer, which achieves rapid cooling, but direct airflow causes rapid evaporation of surface moisture from fruits and vegetables, leading to drying and severely impacting preservation; the other is to conduct cooling through the drawer walls, avoiding the direct airflow problem, but the cooling speed is slow and cannot meet users' needs for rapid cooling. Therefore, existing designs lack flexible adjustments to the cooling method and cannot dynamically adjust the airflow path according to actual temperature conditions. This cooling distribution method makes it difficult to balance cooling efficiency and preservation effect, resulting in poor temperature uniformity inside the drawer, affecting overall energy efficiency and user experience. Utility Model Content

[0003] This utility model provides a drawer assembly and a refrigerator, which can solve the technical problem that existing cooling methods lack flexible adjustment of the cooling method and cannot dynamically adjust the airflow path according to actual temperature conditions.

[0004] This utility model provides a drawer assembly, including a drawer body and a ventilation duct; The drawer body defines a refrigerated compartment for storing items, and the drawer body is provided with a ventilation duct, which is isolated from the refrigerated compartment; The ventilation duct is installed in the refrigerator compartment. The ventilation duct has an air inlet and an air outlet, and the air inlet and the air outlet can be selectively opened and closed. When both the air inlet and the air outlet are open, the air outlet is connected to the ventilation duct, and cooling airflow flows into the air inlet. Part of the cooling airflow enters the refrigerator compartment through the ventilation channel, and the other part of the cooling airflow flows into the ventilation duct to cool the drawer body.

[0005] In some embodiments, the ventilation duct is a flexible duct, with both ends of the ventilation duct connected to the inner wall of the drawer body, and ventilation holes are provided on the ventilation duct.

[0006] In some embodiments, the ventilation duct surrounds the periphery of the refrigerator compartment, and the drawer body is provided with an exhaust vent located on the air outlet path of the ventilation duct, so as to cool the drawer body as a whole before discharging the air from the exhaust vent.

[0007] In some embodiments, a discharge through hole is provided on the inner wall of the drawer body. One end of the discharge through hole is connected to the refrigerator compartment, and the other end of the discharge through hole is connected to the ventilation duct, so as to discharge the cooling gas in the refrigerator compartment into the ventilation duct.

[0008] In some embodiments, the drawer body includes a drawer liner and a drawer shell, the ventilation duct is formed by the space between the outer wall of the drawer liner and the inner wall of the drawer shell; the drawer liner defines the refrigerator compartment, the two ends of the ventilation duct are respectively connected to the drawer liner, and the exhaust port is opened on the bottom side wall of the drawer shell.

[0009] In some embodiments, the drawer body is provided with a ventilation duct, one end of which is connected to the air inlet, and the other end of which passes through the ventilation duct and extends out of the drawer shell. The air inlet can be selectively opened or closed. When both the air inlet and the air outlet are closed, the connecting ventilation duct is connected to the ventilation duct, and the cooling airflow flows from the connecting ventilation duct into the ventilation duct to cool the drawer body before being discharged from the exhaust port.

[0010] In some embodiments, the bottom outer peripheral wall of the drawer liner is provided with a circumferential baffle. With the longitudinal section of the drawer body as the projection plane, along the inflow direction of the cooling airflow, the circumferential baffle is provided with a converging flow hole on the side near the air outlet. When both the air inlet and the air outlet are closed, the connecting ventilation duct is connected to the ventilation duct, and the cooling airflow flows from the connecting ventilation duct into the ventilation duct. The cooling airflow flows circumferentially in the ventilation duct and flows into the bottom of the drawer shell through the converging flow hole.

[0011] In some embodiments, an axial flow fan is provided in the ventilation duct, and the outlet of the axial flow fan faces the inlet.

[0012] A refrigerator includes a drawer assembly, said drawer assembly being the drawer assembly described above.

[0013] The drawer assembly and refrigerator provided by this utility model have the following beneficial effects: In this invention, cooling airflow can directly enter the refrigerator compartment through the ventilation duct for rapid cooling. The ventilation duct is isolated from the refrigerator compartment, and the cooling airflow indirectly cools the drawer body through the ventilation duct, avoiding the drying problem caused by direct airflow. By combining the opening and closing of the air inlet and outlet, three cooling methods can be flexibly switched. The combination of the ventilation duct and the air duct allows for flexible switching of cooling modes according to different temperature conditions and preservation needs, balancing rapid cooling with moisture retention and preservation. The cooling airflow in the ventilation duct directly enters the refrigerator compartment, which can quickly reduce the local temperature, but may lead to uneven temperature distribution. The ventilation duct, through the conduction effect of the drawer wall, evenly transfers the cooling effect to the entire drawer, improving temperature uniformity. When the ventilation duct and the air duct work simultaneously (the second method), the cooling airflow can both quickly reduce the local temperature through the ventilation duct and evenly cool the entire drawer through the air duct, thus achieving dual optimization of rapid cooling and temperature uniformity. The combination of ventilated air ducts and air circulation ducts enables flexible switching of cooling methods, optimization of temperature uniformity, enhancement of preservation effect, and improvement of user experience. This synergistic effect allows the system to dynamically adjust the cooling strategy according to different temperature conditions and preservation needs, taking into account both rapid cooling and moisturizing preservation, and significantly improving the overall performance of the refrigerator's cold drawer. Attached Figure Description

[0014] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the drawer assembly according to an embodiment of the present utility model; Figure 2 This is a longitudinal cross-sectional schematic diagram of the first cooling method for the drawer assembly according to an embodiment of the present utility model; Figure 3 This is another longitudinal cross-sectional schematic diagram of the first cooling method of the drawer assembly according to an embodiment of the present utility model; Figure 4 This is a longitudinal cross-sectional schematic diagram of the second cooling method for the drawer assembly according to an embodiment of the present utility model; Figure 5 This is a longitudinal cross-sectional schematic diagram of the third cooling method for the drawer assembly according to an embodiment of the present utility model; Figure 6 A schematic diagram of a third cooling method when a baffle is provided for the drawer assembly of this utility model embodiment; Figure 7 This is a schematic diagram of the ventilation duct of an embodiment of the present utility model.

[0016] Attached diagram: 1-Drawer body; 11-Refrigerator compartment; 12-Exhaust vent; 13-Exhaust hole; 101-Drawer inner liner; 102-Drawer outer shell; 2-Ventilation duct; 3-Breathable air duct; 301-Air inlet; 302-Air outlet; 4-Connecting ventilation duct; 5-Circular baffle; 501-Converging flow hole; 6-Axial flow fan. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0018] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" 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 utility model and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0019] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used here to describe the spatial positional relationship of a device or feature as shown in the figure with other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation of the device as described in the figure. For example, if a device in the figure is inverted, a device described as "above" or "on top of" other devices or structures will subsequently be positioned as "below" or "under" other devices or structures.

[0020] See also Figures 1 to 7As shown, according to an embodiment of the present invention, a drawer assembly is provided, including a drawer body 1 and a ventilation duct 3. The drawer body 1 defines a refrigerator compartment 11 for storing items. A ventilation duct 2 is provided in the drawer body 1, and the ventilation duct 2 is isolated from the refrigerator compartment 11. The ventilation duct 3 is disposed in the refrigerator compartment 11 and has an air inlet 301 and an air outlet 302. The air inlet 301 and the air outlet 302 can be selectively opened and closed. When both the air inlet 301 and the air outlet 302 are open, the air outlet 302 is connected to the ventilation duct 2, and a cooling airflow flows into the air inlet 301. Part of the cooling airflow enters the refrigerator compartment 11 through the ventilation duct 3, and the other part of the cooling airflow flows into the ventilation duct 2 to cool the drawer body 1.

[0021] It is worth noting that in this embodiment, the cooling airflow inflow method includes at least two types. One type is that the air inlet 301 is open, and the cooling airflow only flows into the air inlet 301, that is, there is cooling airflow in the ventilation duct 3. The other type is that both the air inlet 301 and the air outlet 302 are closed, and the cooling airflow only flows into the ventilation duct 2, that is, there is no cooling airflow in the ventilation duct 3.

[0022] Specifically, in the first cooling method, the internal temperature of the drawer body 1 is relatively high and the temperature difference with the external environment is large. The items (fruits and vegetables) need to be cooled down and kept fresh quickly. At this time, the air inlet 301 is opened and the air outlet 302 is closed. Cooling air flows into the air inlet 301 and only flows in the ventilation duct 3. The cooling air enters the refrigerator compartment 11 through the ventilation duct 3, which can directly cool down the items (fruits and vegetables) quickly and avoid cold air blowing directly on the items (fruits and vegetables).

[0023] Specifically, in the second cooling method, the internal temperature of the drawer body 1 is relatively high, but the temperature difference with the external environment is small. At this time, when items (fruits and vegetables) are placed in the drawer body 1, the temperature of the drawer body 1 is less affected. Both the air inlet 301 and the air outlet 302 are open. Cooling air flows into the air inlet 301. Part of the cooling air flows into the refrigerator compartment 11 through the ventilation duct 3, and the other part of the cooling air flows into the ventilation duct 2 through the air outlet 302 to cool the drawer body 1.

[0024] Specifically, in the third cooling method, the internal temperature of the drawer body 1 is already within a suitable range. The cooling airflow no longer enters the drawer body 1 through the ventilation duct 3, but directly enters the ventilation duct 2. At this time, both the air inlet 301 and the air outlet 302 are closed, and the cooling airflow flows into the ventilation duct 2 to cool the drawer body 1.

[0025] In this embodiment, the opening and closing control of the air inlet 301 and air outlet 302 enables the system to dynamically switch cooling modes according to different temperature conditions and preservation needs, achieving a balance between rapid cooling and gentle preservation. The ventilation duct 2 provides an indirect cooling path, enhancing cooling flexibility. The ventilation duct 2 is isolated from the refrigerator compartment 11, allowing the cooling airflow to indirectly cool the drawer body 1 through the ventilation duct 2. This arrangement allows the cooling airflow to reduce the temperature of the refrigerator compartment 11 through conduction via the drawer walls without directly entering the refrigerator compartment 11. This method is particularly suitable when the temperature inside the drawer is close to the target temperature, avoiding overcooling or drying problems that may occur with direct airflow, while maintaining cooling efficiency. The ventilation duct 2 can evenly distribute the cooling airflow to all parts of the drawer through conduction via the drawer walls, thereby improving the temperature uniformity within the refrigerator compartment 11. This uniform cooling method avoids localized overcooling or overheating that may occur with traditional direct airflow methods, improving the overall preservation effect. The presence of ventilation duct 2 allows the cooling system to flexibly switch cooling modes according to different temperature conditions. When rapid cooling is required (first cooling mode), the cooling airflow directly enters the refrigerator compartment 11 through ventilation duct 3, quickly lowering the temperature. When the temperature difference is small (second cooling mode), part of the cooling airflow enters the refrigerator compartment 11 through ventilation duct 3, and part indirectly cools the drawer body 1 through ventilation duct 2. When the temperature is within a suitable range (third cooling mode), the cooling airflow completely indirectly cools the drawer body 1 through ventilation duct 2, avoiding unnecessary direct airflow. This dynamic adjustment capability allows the system to meet the needs of rapid cooling while avoiding drying and moisture loss, balancing cooling efficiency and preservation effect. In this embodiment, ventilation duct 2 plays multiple roles, including indirect cooling, optimizing temperature uniformity, dynamically adjusting the cooling mode, reducing energy consumption, and minimizing the impact of direct cold airflow on food. Through its collaborative work with ventilation duct 3, it achieves flexible switching of cooling modes, balancing rapid cooling and preservation effect, significantly improving the overall performance and user experience of the refrigerator drawer.

[0026] In this embodiment, the cooling airflow can directly enter the refrigerator compartment 11 through the ventilation duct 3 to achieve rapid cooling. The ventilation duct 2 is isolated from the refrigerator compartment 11, and the cooling airflow indirectly cools the drawer body 1 through the ventilation duct 2, avoiding the drying problem caused by direct airflow. By opening and closing the air inlet 301 and the air outlet 302, it is possible to flexibly switch between three cooling methods. The combination of the ventilation duct 3 and the ventilation duct 2 allows for flexible switching of cooling modes according to different temperature conditions and preservation needs, taking into account both rapid cooling and moisture preservation. The cooling airflow in the ventilation duct 3 directly enters the refrigerator compartment 11, which can quickly reduce the local temperature, but may lead to uneven temperature distribution. The ventilation duct 2, through the conduction effect of the drawer wall, evenly transfers the cooling effect to the entire drawer, improving temperature uniformity. When the ventilation duct 3 and the ventilation duct 2 work simultaneously (the second method), the cooling airflow can both quickly reduce the local temperature through the ventilation duct 3 and evenly cool the entire drawer through the ventilation duct 2, thereby achieving dual optimization of rapid cooling and temperature uniformity. The combination of the ventilated air duct 3 and the ventilation air duct 2 enables flexible switching of cooling methods, optimization of temperature uniformity, enhancement of preservation effect, and improvement of user experience. This synergistic effect allows the system to dynamically adjust the cooling strategy according to different temperature conditions and preservation needs, taking into account both rapid cooling and moisturizing preservation, and significantly improving the overall performance of the refrigerator's cold drawer.

[0027] See also Figures 1 to 7 As shown, the ventilation duct 3 is a flexible duct, with both ends connected to the inner wall of the drawer body 1. Ventilation holes are provided on the ventilation duct 3. In this embodiment, the ventilation duct 3 is made of cloth, forming a cloth bag-like structure. Multiple ventilation holes are spaced apart on the wall of the ventilation duct 3, allowing for uniform release of cooling airflow. In other embodiments, the flexible duct can also be made of silicone or rubber. Silicone and rubber have good flexibility and elasticity, adapting to different drawer shapes and sizes, and are designed in a similar structure to a cloth bag, but with better sealing and durability. The ventilation holes can be evenly distributed through laser drilling or machining. The flexible duct can be adjusted by the size and density of the ventilation holes to meet different cooling needs.

[0028] In this embodiment, the material properties of the flexible air duct (such as cloth, silicone, rubber, etc.) allow the cooling airflow to be distributed more evenly within the refrigerator compartment 11. The flexible air duct typically has ventilation holes, through which the cooling airflow can evenly penetrate to every corner of the refrigerator compartment 11, preventing localized overcooling or overheating. The flexible air duct can flexibly adjust its shape according to the arrangement and shape of the items within the refrigerator compartment 11, ensuring that the airflow evenly covers all areas. The flexible air duct releases the cooling airflow into the refrigerator compartment 11 gently through the ventilation holes, rather than blowing it directly onto the food. The cooling airflow permeates into the refrigerator compartment 11 through the ventilation holes, avoiding the direct impact on the surface of the food caused by traditional direct blowing methods, reducing moisture evaporation and drying. For fruits and vegetables and other easily dehydrated foods, the flexible air duct can effectively protect their surface moisture and extend their shelf life.

[0029] As a specific implementation method, one end of the ventilation duct 3 is an air inlet 301, and the other end of the ventilation duct 3 is an air outlet 302. The drawer body 1 is provided with mounting holes so that the ventilation duct 3 is horizontally installed in the drawer body 1. The air inlet 301 and air outlet 302 can be selectively opened and closed. There are several specific implementation methods. For example, mechanical valves (such as butterfly valves, ball valves, or sliding valves) can be used to control the opening and closing of the air inlet 301 and air outlet 302. Such valves can be operated manually or electrically to achieve precise airflow control. Solenoid valves can be used to control the opening and closing of the air inlet 301 and air outlet 302. The solenoid valve drives the movement of the valve core through electromagnetic force to realize the opening and closing of the airflow channel. The solenoid valve can be integrated with the refrigerator's intelligent control system and automatically control the opening and closing of the air inlet 301 and air outlet 302 based on the feedback from the temperature sensor in the refrigerator compartment 11. Pneumatic systems (such as cylinders or pneumatic diaphragms) can be used to control the opening and closing of the air inlet 301 and air outlet 302. The pneumatic system drives the movement of the actuator through air pressure to realize the opening and closing of the ventilation duct 2. The selective opening and closing of the air inlet 301 and air outlet 302 can be achieved in multiple ways, depending on the refrigerator's configuration requirements and the user's habits. By flexibly selecting and combining these control methods, efficient and flexible cooling control can be achieved, significantly improving the performance of the refrigerator's freezer drawers and the user experience. The opening and closing of the air inlet 301 and air outlet 302 can be automatic based on control signals. See also Figures 1 to 7As shown, the drawer body 1 includes a drawer liner 101 and a drawer shell 102. The ventilation duct 2 is formed by the space between the outer wall of the drawer liner 101 and the inner wall of the drawer shell 102. The drawer liner 101 defines a refrigerator compartment 11, and the two ends of the ventilation duct 3 are connected to the drawer liner 101. In other embodiments, the ventilation duct 2 can be formed in various innovative ways according to different structural and functional requirements. In addition to using the space between the drawer liner 101 and the shell to form the ventilation duct 2, the ventilation duct 2 can also be set up in the following ways: for example, an independent air duct cavity can be set at the bottom or side of the drawer liner 101 or the drawer shell 102. The cooling airflow enters the cavity through a special air inlet 301 and then communicates with the refrigerator compartment 11 through a vent or exhaust hole 13. The ventilation duct 2 can be set up as a modular unit, and these modules can be installed at different positions of the drawer body 1 as needed to form an expandable cooling system.

[0030] Specifically, in the gentle cooling mode (second method), part of the cooling airflow enters the refrigerator compartment 11 through the vents to gently cool the items inside. Another part of the cooling airflow enters the ventilation duct 2 through the air outlet 302. The cooling airflow entering the ventilation duct 2 conducts cold air through the outer wall of the drawer liner 101, cooling the drawer body 1 as a whole. Because the ventilation duct 2 surrounds the outer wall of the drawer body 1, the cooling airflow can act evenly on all parts of the drawer body 1. In the low-temperature maintenance mode (third method), the internal temperature of the drawer body 1 is already within a suitable range and needs to be maintained at a low temperature. The cooling airflow does not enter the vent duct 3 but directly enters the ventilation duct 2. The cooling airflow surrounds the outer wall of the drawer body 1 through the ventilation duct 2, cooling the drawer body 1 as a whole through conduction. Because the space between the drawer liner 101 and the outer shell forms the ventilation duct 2, the cooling airflow flows within the ventilation duct 2, evenly conducting cold air.

[0031] In this embodiment, the ventilation duct 2 is located between the drawer inner liner 101 and the outer shell. Cooling airflow flows through this space and conducts cold energy to the refrigerator compartment 11 through the outer wall of the drawer inner liner 101. This indirect cooling method avoids the cooling airflow blowing directly onto the food, reducing drying, while still effectively lowering the temperature inside the refrigerator compartment 11. The ventilation duct 2 surrounding the drawer body 1 can evenly conduct cold energy to all parts of the drawer, avoiding local overcooling or overheating and significantly improving the temperature uniformity inside the refrigerator compartment 11. The ventilation duct 2 utilizes the space between the drawer inner liner 101 and the outer shell without occupying additional space inside the refrigerator compartment 11. This design maximizes the internal space of the drawer, improving space utilization, allowing users to store more food. The ventilation duct 2 is integrated with the drawer body 1, reducing the installation of additional components, simplifying the overall structure, and lowering manufacturing costs.

[0032] See also Figures 1 to 7 As shown, the inner wall of the drawer body 1 is provided with a discharge through hole 13. Specifically, a plurality of discharge through holes 13 are provided at intervals on the bottom wall of the drawer inner liner 101. One end of the discharge through hole 13 is connected to the refrigerator compartment 11, and the other end of the discharge through hole 13 is connected to the ventilation duct 2, so as to discharge the cooling gas in the refrigerator compartment 11 into the ventilation duct 2.

[0033] Specifically, in the rapid cooling mode (first method), the cooling airflow enters the refrigerator compartment 11 through the vents in the ventilation duct 3, directly and rapidly cooling the items inside. The cooled air (relatively warm air) in the refrigerator compartment 11 then enters the ventilation duct 2 through the exhaust vent 13. In the gentle cooling mode (second method), part of the cooling airflow enters the refrigerator compartment 11 through the vents, gently cooling the items inside. The cooled air (relatively warm air) in the refrigerator compartment 11 then enters the ventilation duct 2 through the exhaust vent 13, while another part of the cooling airflow enters the ventilation duct 2 through the air outlet 302. In the low-temperature maintenance mode (third method), the cooling airflow surrounds the outer wall of the drawer body 1 through the ventilation duct 2, cooling the entire drawer body 1 through conduction.

[0034] In this embodiment, the hot air (relatively warm air after cooling) in the refrigerator compartment 11 enters the ventilation duct 2 through the exhaust port 13. This process prevents the hot air from accumulating in the refrigerator compartment 11, ensuring that the temperature inside the refrigerator compartment 11 is always kept at a low level. The exhaust port 13 provides a circulation path for the cooling gas, allowing the cooling airflow to be distributed more evenly. After the cooling airflow is cooled in the refrigerator compartment 11, it enters the ventilation duct 2 through the exhaust port 13, forming an airflow circulation system. Through the exhaust port 13, the hot air in the refrigerator compartment 11 is exhausted, while the cold air in the ventilation duct 2 conducts cold energy through the outer wall of the drawer liner 101, further cooling the drawer body 1. This arrangement makes the temperature inside the refrigerator compartment 11 more uniform, avoiding local overcooling or overheating. The exhaust port 13 allows the system to dynamically adjust the cooling intensity and flexibly adjust the cooling mode according to the temperature requirements inside the refrigerator compartment 11, maintaining a dynamic temperature balance. Because the cooling airflow does not blow directly onto the food, but instead cools indirectly through the ventilation duct 3 and the exhaust hole 13, it reduces the evaporation and drying caused by direct cold air blowing. This is especially important for fruits and vegetables and other foods that are prone to losing water, and can significantly improve the preservation effect. While the exhaust hole 13 discharges hot air, it also reduces the humidity fluctuations caused by temperature changes in the refrigerator compartment 11, which helps to maintain the humidity balance in the refrigerator compartment 11 and further extend the preservation time of the food.

[0035] As a specific implementation, the drawer body 1 can be a double-layer structure consisting of a drawer liner 101 and a shell, or it can be a single integral structure. The ventilation duct 2 can be formed by setting built-in pipes inside the drawer body 1, which serve as ventilation ducts 2 to guide cooling airflow; setting a grid-like or honeycomb-like structure inside or on the surface of the drawer body 1, which forms ventilation ducts 2 to evenly distribute cooling airflow; or dividing the interior of the drawer body 1 into multiple independent chambers, which are interconnected through specific openings or channels to form ventilation ducts 2. Even if the drawer body 1 is a single integral structure rather than a double-layer structure, the ventilation duct 2 can still be achieved through various configurations.

[0036] See also Figures 1 to 7 As shown, the ventilation duct 2 surrounds the periphery of the refrigerator compartment 11, and the drawer body 1 is provided with an exhaust port 12. Specifically, the exhaust port 12 is opened on the bottom side wall of the drawer shell 102. The exhaust port 12 is located on the air outlet path of the ventilation duct 2 so that the drawer body 1 is cooled as a whole and then discharged from the exhaust port 12.

[0037] Specifically, in the rapid cooling mode (first method), cooling airflow enters the refrigerator compartment 11 through the vents in the ventilation duct 3, directly and rapidly cooling the items inside. The cooled hot air (relatively warm air) flows through the ventilation duct 2 and is finally exhausted from the exhaust vent 12 on the bottom side wall of the drawer outer shell 102. In the gentle cooling mode (second method), part of the cooling airflow enters the refrigerator compartment 11 through the vents, gently cooling the items inside. The cooled hot air flows through the ventilation duct 2, while another part of the cooling airflow enters the ventilation duct 2 through the air outlet 302 and is finally exhausted from the exhaust vent 12 on the bottom side wall of the drawer outer shell 102. In the low-temperature maintenance mode (third method), cooling airflow surrounds the refrigerator compartment 11 through the ventilation duct 2, conducts cold air through the outer wall of the drawer inner liner 101, and cools the drawer body 1 as a whole. The cooled hot air flows through the ventilation duct 2 and is finally exhausted from the exhaust vent 12 on the bottom side wall of the drawer outer shell 102.

[0038] In this embodiment, during the cooling process, the air inside the refrigerator compartment 11 absorbs heat and gradually warms up after being cooled. The function of the exhaust vent 12 is to expel this relatively warm air from the drawer body 1, preventing heat accumulation and thus maintaining the low temperature state inside the refrigerator compartment 11. By expelling hot air, the exhaust vent 12 can effectively prevent the temperature inside the refrigerator compartment 11 from rising again due to heat accumulation, ensuring that the temperature inside the refrigerator compartment 11 is always kept within the set low temperature range. The exhaust vent 12 provides an outlet for the cooling airflow, allowing the cooling airflow to form a complete circulation path between the ventilation duct 2 and the refrigerator compartment 11. The cooling airflow enters from the air inlet 301, cools the drawer body 1 and the refrigerator compartment 11 through the ventilation duct 2 or the vent 3, and finally exits through the exhaust vent 12. This airflow circulation can ensure that the cooling airflow is evenly distributed throughout the drawer body 1 and the refrigerator compartment 11, reducing local overcooling or overheating and improving temperature uniformity.

[0039] See also Figures 1 to 7 As shown, the drawer body 1 is provided with a connecting ventilation duct 4. One end of the connecting ventilation duct 4 is connected to the air inlet 301, and the other end of the connecting ventilation duct 4 passes through the ventilation duct 3 and extends out of the drawer shell 102. The air inlet 301 can be selectively opened or closed. When both the air inlet 301 and the air outlet 302 are closed (third cooling method), the connecting ventilation duct 4 is connected to the ventilation duct 2. Specifically, the connecting ventilation duct 4 is provided with relevant air vents that can be opened or closed. The air vents are only opened when the ventilation duct 2 needs to be vented with cooling air. The cooling air flows from the connecting ventilation duct 4 into the ventilation duct 2 to cool the drawer body 1 and then is discharged from the exhaust port 12. In other embodiments, relevant air vents can also be provided on the drawer shell 102, which can allow external air to flow into the ventilation duct 2. The connecting ventilation duct 4 can be an integral structure with the ventilation duct 3 or a separate structure.

[0040] In this embodiment, the connecting ventilation duct 4 connects the air inlet 301 and the ventilation duct 2. The air vents (which can be opened or closed) on the connecting ventilation duct 4 allow for flexible distribution of cooling airflow. When both the air inlet 301 and the air outlet 302 are closed, the air vents on the connecting ventilation duct 4 are opened, allowing the cooling airflow to directly enter the ventilation duct 2, bypassing the ventilated duct 3, thus achieving overall cooling of the drawer body 1. In other cooling modes (such as rapid cooling or gentle cooling), the air vents on the connecting ventilation duct 4 are closed, and the cooling airflow enters the refrigerator compartment 11 through the ventilated duct 3, achieving direct or indirect cooling. The connecting ventilation duct 4 allows the cooling system to select direct cooling (through the ventilated duct 3) or indirect cooling (through the ventilation duct 2) as needed. This flexibility ensures optimal cooling performance under different temperature conditions. In the low-temperature maintenance mode (the third cooling method), the cooling airflow directly enters the ventilation duct 2 through the connecting ventilation duct 4, avoiding unnecessary cooling operations and reducing energy consumption. The installation of ventilation duct 4 allows the system to dynamically adjust the cooling mode according to the temperature requirements inside the refrigerator compartment 11. For example, it can switch to rapid cooling mode when the temperature is high and switch to maintaining low temperature mode when the temperature is suitable. Users can choose different cooling modes according to their actual needs.

[0041] See also Figures 1 to 7 As shown, a circumferential baffle 5 is provided on the bottom outer peripheral wall of the drawer inner liner 101. Taking the longitudinal section of the drawer body 1 as the projection plane, along the flow direction of the cooling airflow, a converging flow hole 501 is provided on the side of the circumferential baffle 5 near the air outlet 302. The circumferential baffle 5 is equivalent to dividing the ventilation duct 2 into two channels with different volumes. The two channels can only be connected through the converging flow hole 501. When both the air inlet 301 and the air outlet 302 are closed, the connecting ventilation duct 4 is connected to the ventilation duct 2. The cooling airflow flows from the connecting ventilation duct 4 into the ventilation duct 2. The cooling airflow flows circumferentially in the ventilation duct 2 and flows into the bottom of the drawer outer shell 102 through the converging flow hole 501.

[0042] Specifically, in the first cooling method, the baffle prevents the cooling airflow from flowing back into the refrigerator compartment 11 through the exhaust hole 13. In the second cooling method (gentle cooling mode), part of the cooling airflow enters the refrigerator compartment 11 through the vent to gently cool the items inside. Another part enters the ventilation duct 2 through the air outlet 302. After flowing in the ventilation duct 2, the cooling airflow flows into the bottom of the drawer outer shell 102 through the converging flow hole 501 on the circumferential baffle 5. This cooling airflow further reduces the temperature at the bottom of the drawer outer shell 102, ensuring overall cooling effectiveness. In the third cooling method (low-temperature maintenance mode), the cooling airflow enters the ventilation duct 2 through the connecting ventilation duct 4 and flows circumferentially within the ventilation duct 2. The circumferential baffle 5 guides the airflow, ensuring that the cooling airflow is evenly distributed around the drawer body 1. After flowing in the ventilation duct 2, the cooling airflow flows into the bottom of the drawer outer shell 102 through the converging flow hole 501 on the circumferential baffle 5.

[0043] In this embodiment, the circumferential baffle 5 effectively guides the cooling airflow circumferentially within the ventilation duct 2, preventing airflow short-circuiting or localized accumulation. This guiding effect ensures that the cooling airflow is evenly distributed around the drawer body 1, resulting in a more uniform cooling effect. The circumferential baffle 5 prevents the cooling airflow from flowing back within the ventilation duct 2, ensuring that the airflow always flows along a predetermined path and improving cooling efficiency. By guiding the cooling airflow evenly around the drawer body 1, the circumferential baffle 5 ensures that all parts of the drawer body 1 are effectively cooled, reducing localized overcooling or overheating. By evenly distributing the cooling airflow, the circumferential baffle 5 reduces the temperature gradient within the refrigerator compartment 11, ensuring a more uniform temperature within the refrigerator compartment 11. Under different cooling modes (such as gentle cooling or maintaining a low temperature), the circumferential baffle 5 effectively maintains a dynamic temperature balance, preventing temperature fluctuations. The circumferential baffle 5 can be integrated with the drawer liner 101, reducing the installation of additional components, simplifying the overall structure, and lowering manufacturing costs.

[0044] See also Figures 1 to 7 As shown, an axial flow fan 6 is installed in the ventilation duct 4, and the air outlet 302 of the axial flow fan 6 faces the air inlet 301.

[0045] In this embodiment, the axial flow fan 6 actively pushes the cooling airflow, ensuring that the airflow enters the air inlet 301 with sufficient speed and pressure. This active pushing mechanism is more efficient than natural convection and can significantly improve cooling efficiency. When rapid cooling is required (such as in the first cooling method), the axial flow fan 6 can quickly deliver the cooling airflow into the ventilation duct 3 to achieve rapid cooling of the refrigerator compartment 11. The axial flow fan 6 can ensure that the cooling airflow is evenly distributed within the ventilation duct 4, avoiding insufficient or excessive airflow in certain areas. This uniform airflow distribution helps improve the temperature uniformity within the refrigerator compartment 11.

[0046] The specific working process of the drawer assembly is as follows: the external ambient temperature is T1, the internal temperature of the drawer body 1 is T0, the first value is X, the second value is Y, and X < Y; preferably the first value is 5℃, the second value is 10℃; when T1 > 5℃ and T0 - T1 > 10℃, the internal temperature of the drawer body 1 is relatively high, and the temperature difference with the external ambient temperature is large, the items (fruits and vegetables) need to be cooled and preserved quickly, the air inlet 301 is opened, and the air outlet 302 is closed; cooling airflow flows into the air inlet 301, and the cooling airflow enters the refrigerator compartment 11 through the ventilation duct 3; When T1>5℃ and T0-T1<10℃, the internal temperature of drawer body 1 is relatively high, but the temperature difference with the external environment is small. At this time, when items (fruits and vegetables) are placed in drawer body 1, the temperature of drawer body 1 is less affected. Both air inlet 301 and air outlet 302 are open, and air outlet 302 is connected to ventilation duct 2. Cooling airflow flows into air inlet 301. Part of the cooling airflow enters the refrigerator compartment 11 through ventilation duct 3, and the other part of the cooling airflow flows into ventilation duct 2 to cool drawer body 1 before being discharged from exhaust vent 12. When T1≤5℃, the internal temperature of the drawer body 1 is within a suitable range. The cooling airflow no longer enters the drawer body 1 through the ventilation duct 3, but directly enters the ventilation duct 2. The air inlet 301 and the air outlet 302 are both closed. The cooling airflow flows into the ventilation duct 2 to cool the drawer body 1 and then is discharged from the exhaust port 12.

[0047] In this embodiment, the cooling airflow can directly enter the refrigerator compartment 11 through the ventilation duct 3 to achieve rapid cooling. The ventilation duct 2 is isolated from the refrigerator compartment 11, and the cooling airflow indirectly cools the drawer body 1 through the ventilation duct 2, avoiding the drying problem caused by direct airflow. By opening and closing the air inlet 301 and the air outlet 302, it is possible to flexibly switch between three cooling methods. The combination of the ventilation duct 3 and the ventilation duct 2 allows for flexible switching of cooling modes according to different temperature conditions and preservation needs, taking into account both rapid cooling and moisture preservation. The cooling airflow in the ventilation duct 3 directly enters the refrigerator compartment 11, which can quickly reduce the local temperature, but may lead to uneven temperature distribution. The ventilation duct 2, through the conduction effect of the drawer wall, evenly transfers the cooling effect to the entire drawer, improving temperature uniformity. When the ventilation duct 3 and the ventilation duct 2 work simultaneously (the second method), the cooling airflow can both quickly reduce the local temperature through the ventilation duct 3 and evenly cool the entire drawer through the ventilation duct 2, thereby achieving dual optimization of rapid cooling and temperature uniformity. The combination of the ventilated air duct 3 and the ventilation air duct 2 enables flexible switching of cooling methods, optimization of temperature uniformity, enhancement of preservation effect, and improvement of user experience. This synergistic effect allows the system to dynamically adjust the cooling strategy according to different temperature conditions and preservation needs, taking into account both rapid cooling and moisturizing preservation, and significantly improving the overall performance of the refrigerator's cold drawer.

[0048] It is worth noting that the coordinated operation of all components is achieved by the control module, which has a built-in temperature judgment and dynamically adjusts the state of the bag air duct based on the values ​​of T0 and T1. When T1 is detected to exceed the set threshold, the system automatically activates the permeation mode of the breathable air duct 3 to quickly cool down; when T1 drops to a safe range, the system automatically switches the air duct mode to reduce unnecessary energy consumption.

[0049] A refrigerator includes a drawer assembly, wherein the drawer assembly is as described above.

[0050] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0051] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The above are only preferred embodiments of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A drawer assembly, characterized in that, include: Drawer body (1) and ventilation duct (3); The drawer body (1) defines a refrigerator compartment (11) for storing items. A ventilation duct (2) is provided in the drawer body (1). The ventilation duct (2) is isolated from the refrigerator compartment (11). The ventilation duct (3) is installed in the cold storage compartment (11). The ventilation duct (3) has an air inlet (301) and an air outlet (302). The air inlet (301) and the air outlet (302) can be selectively opened and closed. When both the air inlet (301) and the air outlet (302) are open, the air outlet (302) is connected to the ventilation duct (2), and cooling airflow flows into the air inlet (301). Part of the cooling airflow enters the refrigerator compartment (11) through the ventilation duct (3), and the other part of the cooling airflow flows into the ventilation duct (2) to cool the drawer body (1).

2. The drawer assembly according to claim 1, characterized in that, The ventilation duct (3) is a flexible duct. Both ends of the ventilation duct (3) are connected to the inner wall of the drawer body (1) respectively. Ventilation holes are provided on the ventilation duct (3).

3. The drawer assembly according to claim 1, characterized in that, The ventilation duct (2) surrounds the periphery of the refrigerator compartment (11), and the drawer body (1) is provided with an exhaust port (12). The exhaust port (12) is located on the air outlet path of the ventilation duct (2) so that the drawer body (1) is cooled as a whole and then discharged from the exhaust port (12).

4. The drawer assembly according to claim 2, characterized in that, The inner wall of the drawer body (1) is provided with a discharge through hole (13). One end of the discharge through hole (13) is connected to the refrigerator compartment (11), and the other end of the discharge through hole (13) is connected to the ventilation duct (2) so as to discharge the cooling gas in the refrigerator compartment (11) into the ventilation duct (2).

5. The drawer assembly according to claim 1, characterized in that, The drawer body (1) includes a drawer liner (101) and a drawer shell (102). The ventilation duct (2) is formed by the space between the outer wall of the drawer liner (101) and the inner wall of the drawer shell (102). The drawer liner (101) defines the refrigerator compartment (11). The two ends of the ventilation duct (3) are respectively connected to the drawer liner (101).

6. The drawer assembly according to claim 5, characterized in that, The drawer body (1) is provided with a ventilation duct (4), one end of which is connected to the air inlet (301), and the other end of which passes through the ventilation duct (3) and extends out of the drawer shell (102). When both the air inlet (301) and the air outlet (302) are closed, the connecting ventilation duct (4) is connected to the ventilation duct (2), and the cooling airflow flows from the connecting ventilation duct (4) into the ventilation duct (2) to cool the drawer body (1).

7. The drawer assembly according to claim 6, characterized in that, The bottom outer periphery of the drawer liner (101) is provided with a circumferential baffle (5). With the longitudinal section of the drawer body (1) as the projection plane, along the flow direction of the cooling airflow, the circumferential baffle (5) is provided with a converging flow hole (501) on the side near the air outlet (302). When both the air inlet (301) and the air outlet (302) are closed, the connecting ventilation duct (4) is connected to the ventilation duct (2), and the cooling airflow flows from the connecting ventilation duct (4) into the ventilation duct (2). The cooling airflow flows circumferentially in the ventilation duct (2) and flows into the bottom of the drawer shell (102) through the confluence flow hole (501).

8. The drawer assembly according to claim 6, characterized in that, An axial flow fan (6) is provided in the ventilation duct (4), and the air outlet of the axial flow fan (6) faces the air inlet (301).

9. The drawer assembly according to claim 1, characterized in that, The refrigerator compartment (11) is provided with two ventilation ducts (3) at intervals, and the ventilation ducts (3) are horizontally arranged on the top of the drawer body (1).

10. A refrigerator, comprising a drawer assembly, characterized in that, The drawer assembly is the drawer assembly according to any one of claims 1 to 8.

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