Refrigerator drawer and refrigerator

Abstract

The present disclosure relates to a refrigerator drawer and a refrigerator, wherein the refrigerator drawer comprises: a mounting frame comprising a top wall, a bottom wall and two side walls connected between the top wall and the bottom wall and located at both ends in a first direction, a front of the mounting frame being provided with an opening; a drawer inserted into the mounting frame through the opening; and an air duct plate provided on the top wall outside the mounting frame, a surface of the air duct plate facing the top wall being provided with a groove, a flow channel being formed between the groove and the top wall, an air inlet of the flow channel being located at a middle region of a rear portion of the mounting frame in the first direction, and air outlets being located at both sides of the air duct plate in the first direction; an outer wall of the mounting frame is provided with a set of flow guide ribs, comprising at least two first rib segments arranged on each side wall in a second direction, adjacent first rib segments forming a first air guide channel, the bottom wall is provided with a second air guide channel, and a first end of each of the two side first air guide channels is in communication with an air outlet on a side of the flow channel, and a second end of each of the two side first air guide channels is in communication with an end of the second air guide channel.

Description

Technical Field

[0001] This disclosure relates to the field of refrigeration and freezing equipment technology, and in particular to a refrigerator drawer and a refrigerator. Background Technology

[0002] As people's living standards improve and consumption concepts change, consumers' functional demands for refrigerators are gradually increasing. The focus has shifted from simply extending food shelf life to considering factors such as sensory appeal and nutritional value. Therefore, maintaining food freshness and ensuring its nutritional value remains intact has become the core function of refrigerator preservation.

[0003] To ensure long-term preservation of different foods, an independent air supply system needs to be designed for this drawer to guarantee accurate temperature control for different foods. However, the current refrigerators still have poor refrigeration and preservation effects, and it has been found that a lot of condensation forms inside the drawer. Utility Model Content

[0004] The embodiments of this disclosure provide a refrigerator drawer and a refrigerator that can improve the refrigeration effect of the refrigerator drawer and reduce condensation inside the drawer.

[0005] According to one aspect of this disclosure, a refrigerator drawer is provided, comprising:

[0006] The mounting frame includes a top wall, a bottom wall, and two side walls. The two side walls are connected between the top wall and the bottom wall and are located at both ends along a first direction. The mounting frame has an opening at the front.

[0007] The drawer is inserted into the mounting frame through the opening in a second direction, perpendicular to the first direction; and

[0008] The air duct plate is located on the outside of the mounting frame and on the top wall. The surface of the air duct plate facing the top wall has a groove, and a flow channel is formed between the groove and the top wall. The air inlet of the flow channel is located in the middle area of ​​the rear part of the mounting frame along the first direction, and the air outlet of the flow channel is located on both sides of the air duct plate along the first direction.

[0009] The outer wall of the mounting frame is provided with a guide rib group, which includes at least two first rib segments spaced apart along the second direction on each side wall. A first air guide channel is formed between adjacent first rib segments. A second air guide channel is provided on the bottom wall. The first ends of the first air guide channels on both sides are respectively connected to the air outlets on both sides of the flow channel, and the second ends of the first air guide channels on both sides are respectively connected to the two ends of the second air guide channel.

[0010] In some embodiments, the flow channel includes:

[0011] The first flow channel extends along the second direction and is located in the middle region of the air duct plate along the first direction, with the rear end of the first flow channel serving as the air inlet; and

[0012] The second flow channel extends along the first direction and forms air outlets on both sides of the air duct plate. The second flow channel is connected to the first flow channel.

[0013] In some embodiments, the flow channel includes a plurality of second flow channels spaced apart along a second direction.

[0014] In some embodiments, the width of the first flow channel gradually increases from the air inlet to the second flow channel closest to the air inlet; and / or

[0015] The width of the first flow channel between each group of adjacent second flow channels gradually decreases along the airflow direction, and is always less than the width of the first flow channel at the point where it connects with the second flow channel closest to the air inlet.

[0016] In some embodiments, the guide rib assembly further includes:

[0017] At least two second rib segments are spaced apart on the bottom wall along a second direction, and a second air guide channel is formed between adjacent second rib segments;

[0018] Among them, at least two second reinforcing bar segments correspond one-to-one with at least two first reinforcing bar segments, and the two ends of the second reinforcing bar segments are respectively connected to the bottom ends of the corresponding first reinforcing bar segments on the two side walls.

[0019] In some embodiments, the first rib segment extends along a third direction on the sidewall, and the top ends of two first rib segments are adjacent to the air outlets on corresponding sides, the third direction being perpendicular to the first and second directions; and

[0020] The second reinforcing bar segment is located on the bottom wall and extends along the first direction.

[0021] In some embodiments, at least one set of support members are provided on the bottom wall along the second direction, configured to support the mounting frame in the refrigerator compartment;

[0022] Each set of support components includes multiple support frames spaced apart along a first direction, and a third air guide channel extending along a second direction is formed between two adjacent support frames. The third air guide channel is connected to the second air guide channel, and the third air guide channel is configured to guide the airflow at the bottom of the mounting frame to the return air vent of the refrigerator compartment.

[0023] In some embodiments, the support frame and the second air guide channel are completely offset in the second direction.

[0024] In some embodiments, the outer wall of the mounting frame is provided with reinforcing ribs, which form a grid pattern, and the protrusion height of the reinforcing ribs is lower than the height of the guide rib assembly.

[0025] In some embodiments, the mounting frame further includes a rear wall with a through hole, and the refrigerator drawer further includes:

[0026] An oxygen-reducing module is installed on the rear wall, located between the rear wall and the drawer. The module has an exhaust pipe that extends through a through-hole. The module is configured to separate oxygen from the gas.

[0027] An air pump, connected to an outlet pipe, is configured to draw in the separated oxygen.

[0028] In some embodiments, the refrigerator drawer further includes:

[0029] A pressure sensor is configured to detect the pressure inside the drawer; and

[0030] The air valve is located on the outer side of the rear wall;

[0031] When the drawer needs to be opened, or when the negative pressure inside the drawer is lower than the preset pressure, the air valve is in the on state to release pressure; when the drawer is closed, the air valve is in the off state to maintain negative pressure.

[0032] In some embodiments, the refrigerator drawer further includes: a sealing knob, a connector having an external thread on the outer surface of the rear wall, a through hole penetrating the rear wall and the connector, the sealing knob being screwed onto the connector and configured to seal the gap between the vent pipe and the connector.

[0033] In some embodiments, the refrigerator drawer further includes:

[0034] The seal, positioned around the opening in the mounting frame, is configured to seal when the drawer is closed.

[0035] In some embodiments, the refrigerator drawer further includes:

[0036] Magnets are located at the back of the drawer; and

[0037] A proximity switch, located on the inner surface of the rear wall of the mounting frame, is configured to sense a magnet and emit a trigger signal when the drawer is closed in the correct position.

[0038] In some embodiments, the refrigerator drawer further includes:

[0039] The first temperature sensor, located inside the mounting frame, is configured to detect the temperature inside the drawer; and

[0040] The second temperature sensor, located inside the air duct plate, is configured to detect the intake air temperature.

[0041] According to another aspect of this disclosure, a refrigerator is provided, including the refrigerator drawer of the above embodiment.

[0042] In some embodiments, the refrigerator further includes a compartment with at least one refrigerator drawer and an air duct.

[0043] The air supply duct includes: a main air supply duct and at least one branch air supply duct, the branch air supply duct being connected to the main air supply duct and the branch air supply duct being connected to the air inlet of the flow channel;

[0044] The compartment is equipped with a return air vent, which is configured to allow airflow from the bottom of the mounting frame to return.

[0045] Based on the above technical solution, the refrigerator drawer of this embodiment features a 3D wraparound air duct designed to meet the spatial requirements of the drawer's internal structure. As the airflow passes through the outer surface of the mounting frame, convective heat exchange occurs, and the cold air gradually penetrates the inner cavity through the wall of the mounting frame for cooling. This prevents cold air from blowing directly into the drawer, reducing moisture loss from refrigerated vegetables and fruits. Furthermore, the air duct wraps around the mounting frame circumferentially, allowing the cold air to quickly reach all parts of the mounting frame, improving heat exchange efficiency, rapidly reaching the required refrigeration temperature, and ensuring a more uniform temperature inside the drawer.

[0046] Furthermore, the air duct structure is distributed on both the side and bottom walls, unlike existing technologies where it is only located at the top. The air duct structure is designed with air outlets on both sides, with the top, two side walls, and bottom walls all participating in heat exchange simultaneously. This increases the heat exchange area and prevents condensation caused by localized cold concentrations in the mounting frame. Simultaneously, even under extreme ambient temperatures, if the air ducts cause prolonged airflow and heat exchange, resulting in low temperatures on the side walls of the mounting frame, the areas below the dew point are distributed on the two side walls. This prevents water droplets from dripping onto the food, thus avoiding any impact on the user experience.

[0047] In addition, the airflow direction in the duct is parallel to the direction of the guide ribs on the wall of the mounting frame. This arrangement helps the airflow maintain its speed when flowing on the outer wall of the mounting frame, reduces velocity decay, and eliminates obvious vortex phenomena, thereby improving airflow circulation efficiency, heat exchange efficiency, and reducing energy consumption. Attached Figure Description

[0048] The accompanying drawings, which are included to provide a further understanding of this disclosure and form part of this application, illustrate exemplary embodiments of this disclosure and are used to explain this disclosure, but do not constitute an undue limitation of this disclosure. In the drawings:

[0049] Figure 1 This is a first-view structural schematic diagram of some embodiments of the refrigerator drawer disclosed herein.

[0050] Figure 2 This is a second-view structural schematic diagram of some embodiments of the refrigerator drawer disclosed herein.

[0051] Figure 3 This is an exploded view of some embodiments of the refrigerator drawer disclosed herein.

[0052] Figure 4Rear view of some embodiments of the refrigerator drawer disclosed herein.

[0053] Figure 5 This is a side sectional view of some embodiments of the refrigerator drawer disclosed herein.

[0054] Figure 6 for Figure 5 Enlarged view of point K in the image.

[0055] Figure 7 This is a top view of some embodiments of the refrigerator drawer disclosed herein.

[0056] Figure 8 This is a schematic diagram of the airflow in the refrigerator drawer during refrigeration.

[0057] Figure 9 This is a schematic diagram showing the size distribution of the airflow field in the refrigerator drawer during refrigeration.

[0058] Explanation of reference numerals in the attached figures

[0059] 1. Mounting frame; 11. Top wall; 12. Side wall; 13. Rear wall; 131. Connector; 132. Sealing ring; 14. First air guide channel; 15. Second air guide channel; 151. First rib section; 152. Second rib section; 16. Reinforcing rib; 17. Bottom wall; 18. Support frame; 19. Flow channel; 191. First flow channel; 192. Second flow channel;

[0060] 2. Drawer;

[0061] 3. Air duct plate; 31. Cover plate;

[0062] 4. Recess; 41. Air inlet; 42. Air outlet;

[0063] 5. Air valve;

[0064] 6. Three-way valve;

[0065] 7. Sealing knob;

[0066] 8. Oxygen reduction module; 81. Air outlet pipe;

[0067] 10. Sealing components;

[0068] 20. Air pump;

[0069] 30. Third air duct;

[0070] 40. Return air vent;

[0071] 50. Magnet;

[0072] 60. Proximity switch;

[0073] 70. Pressure sensor;

[0074] x, first direction; y, second direction; z, third direction. Detailed Implementation

[0075] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the present disclosure or its application or use. The present disclosure may be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that the present disclosure will be thorough and complete, and will fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless specifically stated otherwise, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as exemplary only and not as limiting.

[0076] The terms "first," "second," and similar words used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "contains" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as "above," "below," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, this relative positional relationship may also change accordingly.

[0077] In this disclosure, when a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediary device, or it may be not directly connected to the other devices but have an intermediary device.

[0078] All terms used in this disclosure (including technical or scientific terms) have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as a dictionary, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not as having an idealized or highly formalized meaning, unless expressly defined herein.

[0079] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0080] Based on the embodiments disclosed above, in the absence of explicit denial or conflict, the technical features of one embodiment may be advantageously combined with one or more other embodiments.

[0081] The inventors discovered through research that to ensure long-term preservation of different foods, it is necessary to design independent air supply systems for refrigerator drawers to guarantee accurate temperature control for different foods. However, due to the airtight nature of the drawers, the internal area is prone to high relative humidity. At the same time, independent air supply can cause localized low temperatures in the drawers. Under stable ambient temperatures, the temperature of the drawer's mounting frame wall is lower than the dew point, causing condensation inside the drawer.

[0082] The air ducts in existing refrigerator drawers typically have a single air outlet, which can easily lead to concentrated heat exchange areas and create low-temperature zones. Furthermore, the airflow direction of the duct can easily create vortices with the reinforcing ribs on the mounting frame, further affecting localized cold accumulation and causing condensation on the top of the mounting frame.

[0083] Therefore, the design of the air supply duct in the drawer area has higher requirements in terms of heat exchange efficiency and temperature distribution uniformity.

[0084] Based on the above problems, this disclosure proposes a refrigerator drawer, such as... Figures 1 to 9 As shown, in some embodiments, the refrigerator drawer includes:

[0085] The mounting frame 1 includes a top wall 11, a bottom wall 17 and two side walls 12. The two side walls 12 are connected between the top wall 11 and the bottom wall 17 and are located at both ends along the first direction x. The mounting frame 1 has an opening at the front.

[0086] Drawer 2 is inserted into mounting frame 1 through the opening along the second direction y, where the second direction y is perpendicular to the first direction x; and

[0087] The air duct plate 3 is located on the outside of the mounting frame 1 and on the top wall 11. The surface of the air duct plate 3 facing the top wall 11 is provided with a groove 4. A flow channel 19 is formed between the groove 4 and the top wall 11. The air inlet 41 of the flow channel 19 is located in the middle area of ​​the rear part of the mounting frame 1 along the first direction x. The air outlet 42 of the flow channel 19 is located on both sides of the air duct plate 3 along the first direction x.

[0088] The outer wall of the mounting frame 1 is provided with a guide rib group, which includes at least two first rib segments 151 spaced apart along the second direction y on each side wall 12. A first air guide channel 14 is formed between adjacent first rib segments 151. A second air guide channel 15 is provided on the bottom wall 17. The first ends of the first air guide channels 14 on both sides are respectively connected to the air outlets 42 on both sides of the flow channel 19, and the second ends of the first air guide channels 14 on both sides are respectively connected to the two ends of the second air guide channel 15.

[0089] Specifically, the mounting frame 1 includes a top wall 11 and a bottom wall 17 spaced apart along a third direction z (height direction). Two side walls 12 are connected between the top wall 11 and the bottom wall 17 and located at both ends along a first direction x (width direction). The mounting frame 1 also includes a rear wall 13, which is connected to the rear ends of the top wall 11, the bottom wall 17, and the two side walls 12 along a second direction y, and forms an opening along its entire length. The drawer 2 is inserted into the mounting frame 1 through the opening and can be pulled out along the second direction y.

[0090] The air duct plate 3 is located on the outside of the mounting frame 1 and on the top wall 11. The surface of the air duct plate 3 facing the top wall 11 has a groove 4. The groove 4 and the top wall 11 form a flow channel 19. The outer surface of the top wall 11 can be a plane or it can be provided with reinforcing ribs 16. When reinforcing ribs 16 are provided, the inner surface of the air duct plate 3 at the position where the groove 4 is not provided can contact the top of the reinforcing ribs 16, preventing airflow from flowing from that area, but still forming a flow channel 19.

[0091] The air inlet 41 of the flow channel 19 is located in the middle area of ​​the rear part of the mounting frame 1 along the first direction x, and the air outlet 42 of the flow channel 19 is located on both sides of the air duct plate 3 along the first direction x. One air outlet 42 can be provided on each side, or multiple air outlets 42 can be provided at intervals along the second direction y.

[0092] The outer wall of the mounting frame 1 is provided with a guide rib assembly, which includes at least two first rib segments 151 spaced apart along the second direction y on each side wall 12. Two first rib segments 151 may be provided, or three first rib segments 151 may be spaced apart along the second direction y. A first air guiding channel 14 is formed between each adjacent pair of first air guiding channels 151, and two adjacent first air guiding channels 151 share the middle guide rib 15. The first rib segments 151 extend continuously on the side wall 12.

[0093] For example, the first rib segment 151 may extend perpendicularly to the second direction y, or extend obliquely relative to the second direction y, or extend along a curve, as long as it can guide the airflow from the air outlet 42 in the flow channel 19 to the side wall 12.

[0094] Furthermore, a second air guide channel 15 is provided on the bottom wall 17. The second air guide channel 15 can extend along the first direction x, or extend at an angle relative to the first direction x, or extend along a curve, as long as the airflow in the first air guide channels 14 on both sides can enter the second air guide channel 15 of the bottom wall 17.

[0095] In this embodiment, the refrigerator drawer has an air duct plate 3 at the top and a flow channel 19 between the air duct plate 3 and the top wall 11. The cold air entering from the air inlet 41 can be guided to the air outlets 42 on both sides. Then, the airflow can flow along the side wall 12 and the bottom wall 17 in sequence under the guidance of the first air guide channel 14 of the side wall 12 and the second air guide channel 15 of the bottom wall. Finally, the airflow returns from the bottom wall 17 to the return air inlet 40.

[0096] This air supply method, designed with the internal space requirements of the drawer structure in mind, features a 3D wraparound air duct. As the airflow passes over the outer surface of the mounting frame 1, convection heat exchange occurs, and the cooling energy gradually penetrates the inner cavity through the wall of the mounting frame 1, preventing direct cold air from blowing into the drawer 2 and reducing moisture loss from refrigerated vegetables and fruits. Furthermore, the air duct wraps around the mounting frame 1 circumferentially, allowing the cooling energy to quickly reach all parts of the mounting frame 1, improving heat exchange efficiency and rapidly reaching the required refrigeration temperature. This also results in a more uniform temperature within the drawer 2, providing a suitable temperature and humidity environment for fruit and vegetable storage, effectively extending storage time, ensuring the quality of stored produce, and improving refrigeration performance.

[0097] Furthermore, the air duct structure is distributed on the side walls 12 and bottom wall 17, unlike the existing technology where it is only located at the top. The air duct structure is also designed with air outlets on both sides, meaning the top wall 11, two side walls 12, and bottom wall 17 of the mounting frame 1 also participate in heat exchange simultaneously, increasing the heat exchange area and preventing condensation caused by localized cold concentration in the mounting frame 1. Simultaneously, even under extreme ambient temperatures, if the air duct's prolonged airflow and heat exchange cause low temperatures on the side walls of the mounting frame 1, the areas with temperatures below the dew point are distributed on the two side walls 12 of the mounting frame 1. This prevents water droplets from dripping onto food, thus avoiding any impact on the user experience.

[0098] In addition, the flow direction of the gas in the air duct is parallel to the direction of the guide ribs 15 on the wall of the mounting frame 1. This arrangement helps the airflow maintain its speed when flowing on the outer wall of the mounting frame 1, reduces the velocity decay, and avoids obvious vortex phenomena, thereby improving the airflow circulation efficiency, improving the heat exchange efficiency, and reducing energy consumption.

[0099] like Figure 3 As shown, a disinfection and sterilization module or other modules can be installed on the top wall 11. To enclose it, it can be sealed by a cover plate 31. For example, the cover plate 31 has a T-shaped structure, with the horizontal part of the T-shaped structure extending along the first direction x and the vertical part extending along the second direction y. Correspondingly, a clearance portion is provided in the middle area on the front side of the air duct plate 3 to avoid the vertical part.

[0100] In some embodiments, such as Figure 1 and Figure 8 As shown, the flow channel 19 includes:

[0101] The first flow channel 191 extends along the second direction y and is located in the middle region of the air duct plate 3 along the first direction x. The rear end of the first flow channel 191 serves as an air inlet 41 for supplying cold air.

[0102] The second flow channel 192 extends along the first direction x and forms air outlets 42 on both sides of the air duct plate 3. The second flow channel 192 is connected to the first flow channel 191.

[0103] The first flow channel 191 and the second flow channel 192 can be perpendicular to each other, or they can be at other angles.

[0104] In this embodiment, the flow channel 19 is designed as a combination of a first flow channel 191 and a second flow channel 192. The cold air supplied to the refrigerator compartment enters from the air inlet 41, flows forward along the first flow channel 191, and when it reaches the location of the second flow channel 192, it flows to both sides along the second flow channel 192 and flows out from the air outlet 42, flowing downward along the two side walls 12. This structure of the flow channel 19 not only allows the cold air to be distributed over a large area on the top wall 11 and the heat exchange to be uniform, but also allows the cold air to flow to the side walls 12 and the bottom wall 17. Therefore, it can prevent the cold air from being too concentrated on the top wall 11, so as to avoid the formation of too much condensation on the top wall 11. Moreover, even if the condensation is distributed on the side walls 12 due to the long-term refrigeration, the condensation will flow downward along the side walls 12, so as to prevent the condensation from dripping onto fruits and vegetables and affecting the taste of refrigerated food.

[0105] In some embodiments, the flow channel 19 includes a plurality of second flow channels 192 spaced apart along a second direction y. For example, two or more second flow channels 192 may be provided.

[0106] This embodiment, by providing multiple second flow channels 192 in the front-rear direction of the mounting frame 1, can make the cold energy distribution along the second direction y on the top wall 11 more uniform. Simultaneously, it can have multiple air outlets 42 on each side of the top wall 11, allowing airflow to exit from the air outlets 42 at a more uniform and gentle speed. This results in a more uniform flow along the side walls 12 and bottom wall 17, further uniformly distributing the cold energy along the second direction y on the side walls 12 and bottom wall 17. Therefore, it can improve the efficiency of the refrigerator drawer reaching the target refrigeration temperature and prevent condensation caused by excessively low local temperatures.

[0107] In some embodiments, such as Figure 8 As shown, the width of the first flow channel 191 gradually increases from the air inlet 41 to the second flow channel 192 closest to the air inlet 41; and / or

[0108] The width of the first flow channel 191 between each group of adjacent second flow channels 192 gradually decreases along the airflow direction, and is less than the width of the first flow channel 191 at the point where it connects with the second flow channel 192 closest to the air inlet 41.

[0109] For example, when three or more second flow channels 192 are provided, the width between each group of adjacent second flow channels 192 gradually decreases along the airflow direction. On this basis, the width of the first flow channel 191 between a specific group of adjacent second flow channels 192 remains unchanged, or the width of the first flow channel 191 between a specific group of adjacent second flow channels 192 also gradually decreases.

[0110] For example, when two second flow channels 192 are provided, the width of the first flow channel 191 between the two second flow channels 192 is smaller than the width at the point where it connects with the second flow channel 192 closest to the air inlet 41.

[0111] In this embodiment, the width of the first flow channel 191 gradually increases from the air inlet 41 to the second flow channel 192 closest to the air inlet 41, which can make the incoming airflow diffuse so that it can quickly enter the first second flow channel 192 and increase the heat exchange area of ​​the first flow channel 191 at the air inlet 41.

[0112] The width of the first flow channel 191 between each group of adjacent second flow channels 192 gradually decreases along the airflow direction, and is all less than the width of the first flow channel 191 at the point where it connects with the second flow channel 192 closest to the air inlet 41. This arrangement takes into account that the gas will attenuate during the gradual flow process and the flow speed will gradually slow down, so that the length of the first flow channel 191 outside the air inlet 41 has a decreasing width trend, which can increase the airflow speed, thereby making the flow speed of the first flow channel 191 more uniform at different positions along the second direction y, thus ensuring more uniform heat exchange on the top wall 11 of the mounting frame 1.

[0113] In some embodiments, such as Figure 2 As shown, the guide rib assembly also includes:

[0114] At least two second rib segments 152 are spaced apart along the second direction y on the bottom wall 17, and a second air guide channel 15 is formed between adjacent second rib segments 152;

[0115] Among them, at least two second reinforcing bar segments 152 correspond one-to-one with at least two first reinforcing bar segments 151, and the two ends of the second reinforcing bar segments 152 are respectively connected to the bottom ends of the corresponding first reinforcing bar segments 151 on the two side walls 12.

[0116] For example, two second rib segments 152 can be provided, or three second rib segments 152 can be provided at intervals along the second direction y. A second air guide channel 15 is formed between each pair of adjacent second rib segments 152, and two adjacent second air guide channels 15 share the middle second rib segment 152. The second rib segments 152 extend continuously on the bottom wall 17.

[0117] For example, the second rib segment 152 may extend perpendicularly to the second direction y, or extend obliquely relative to the second direction y, or extend along a curve, as long as it can guide the airflow flowing out from the bottom in the first air guide channel 14 to the second air guide channel 15 of the bottom wall 17.

[0118] Optionally, an air duct plate may also be provided at the bottom of the mounting frame 1, with a groove provided on the surface of the air duct plate facing the bottom wall 17 to form a second air guide channel 15.

[0119] This embodiment forms a first air guide channel by setting a second rib segment 152 on the bottom wall 17. The flow channel 19 (e.g., the second flow channel 192), the first air guide channel 14, and the second air guide channel 15 form an air supply duct surrounding the mounting frame 1. When the airflow passes through the outer surface of the mounting frame 1, convective heat exchange occurs. The cold air gradually penetrates the inner cavity through the wall of the mounting frame 1 for cooling, so that the cold air does not blow directly into the drawer 2, which can reduce the moisture loss of refrigerated vegetables and fruits. Moreover, the air supply duct wraps around the mounting frame 1 in the circumferential direction, which can make the cold air quickly reach all parts of the mounting frame 1, improve the heat exchange efficiency, quickly reach the required refrigeration temperature, and make the temperature inside the drawer 2 more uniform. It can provide a suitable temperature and humidity environment for fruit and vegetable storage, effectively extend the storage time of fruits and vegetables, ensure the storage quality of fruits and vegetables, and improve the refrigeration effect.

[0120] Furthermore, the first rib segment 151 is provided on the side wall 12 and the second rib segment 152 is provided on the bottom wall 17, which can increase the structural strength of the mounting frame 1. For embodiments that require oxygen reduction inside the drawer 2, the degree of deformation of the mounting frame 1 can be reduced.

[0121] In some embodiments, the first rib segment 151 extends along a third direction z on the sidewall 12, and the top ends of two first rib segments 151 are adjacent to the air outlet 42 on the corresponding side. The third direction z is perpendicular to the first direction x and the second direction y.

[0122] The second reinforcing bar segment 152 is provided on the bottom wall 17 and extends along the first direction x. The two ends of the second reinforcing bar segment 152 are respectively connected to the bottom ends of the two first reinforcing bar segments 151.

[0123] The first reinforcing bar segment 151 extends along the entire height of the side wall 12, and the second reinforcing bar segment 152 extends along the entire width of the bottom wall 17.

[0124] This embodiment can guide airflow along a predetermined first air guide channel 14 on the side wall 12 by setting a first rib segment 151, and guide airflow along a predetermined first air guide channel 14 on the bottom wall 17 by setting a second rib segment 152, so that the airflow in the flow channel 19 of the top wall 11 flows smoothly to the side wall 12 and the bottom wall 17, thereby making the cooling of the entire surface of the mounting frame 1 more uniform. Moreover, the first rib segment 151 extending along the third direction z can make the airflow flow downward to the bottom wall 17 better, and the second rib segment 152 extending along the first direction x can reduce the flow resistance of the gas when transitioning from the side wall 12 to the bottom wall 17, thereby reducing airflow attenuation.

[0125] In some embodiments, such as Figure 2 As shown, at least one set of support members are provided on the bottom wall 17 along the second direction y, which are configured to support the mounting frame 1 in the refrigerator compartment.

[0126] Each set of support components includes a plurality of support frames 18 spaced apart along the first direction x. A third air guide channel 30 extending along the second direction y is formed between two adjacent support frames 18. The third air guide channel 30 is connected to the first air guide channel 14 and is configured to guide the airflow at the bottom of the mounting frame 1 to the return air vent 40 of the refrigerator compartment.

[0127] For example, a set of support components can be provided, or multiple sets can be provided at intervals along the second direction y. The support frame 18 can be a rectangular frame. To increase strength, reinforcing partitions can be provided inside the support frame 18. When multiple reinforcing partitions are provided, they can be arranged in parallel, at an angle, or in a cross shape, etc.

[0128] In order to allow the airflow to flow smoothly on the bottom wall 17, the protrusion height of the support frame 18 is higher than that of the guide rib assembly.

[0129] This embodiment, by setting a support frame 18 at the bottom of the bottom wall 17, not only provides support for the installation frame 1, but also forms an air guide channel below the bottom wall 17, without affecting the flow of air at the bottom, and allows for good transfer of cold energy through the bottom wall 17. Moreover, by setting multiple support frames 18 at intervals along the first direction x, it can provide stable support for the left and right sides of the installation frame 1, making the support more balanced and preventing the installation frame 1 from tilting due to uneven weight of items placed on the left and right sides.

[0130] In some embodiments, the support frame 18 and the second air guide channel 15 are completely offset in the second direction y.

[0131] Optionally, the support frame 18 and the second air guide channel 15 may also be partially offset in the second direction y.

[0132] This embodiment completely offsets the support frame 18 and the second air guide channel 15 in the second direction y, allowing the airflow at the bottom end of the side wall 12 of the first air guide channel 14 to flow smoothly into the bottom wall 17, preventing the support frame 18 from affecting the gas flow into the bottom wall 17, reducing airflow loss, improving heat exchange efficiency, and reducing energy consumption.

[0133] In some embodiments, the outer wall of the mounting frame 1 is provided with reinforcing ribs 16, which form a mesh, and the protrusion height of the reinforcing ribs 16 is lower than the height of the guide rib assembly.

[0134] The reinforcing ribs 16 may be provided on at least one of the top wall 11, the bottom wall 17, and the two side walls 12. The reinforcing ribs 16 may be located between adjacent first rib segments 151, or between adjacent second rib segments 152, or in other areas.

[0135] This embodiment improves the overall structural strength of the mounting frame 1 by providing reinforcing ribs 16 on the outer wall of the mounting frame 1, preventing deformation and enabling the drawer 2 to bear a greater weight. Moreover, the protrusion height of the reinforcing ribs 16 is lower than the height of the guide ribs 15, so it will not affect the flow of cold air along the side wall 12 and bottom wall 17, thus balancing the improvement of structural strength and gas flow.

[0136] In some embodiments, such as Figure 3 As shown, the mounting frame 1 also includes a rear wall 13, on which a through hole is provided, and the refrigerator drawer also includes:

[0137] An oxygen-reducing module 8 is installed on the rear wall 13 and located between the rear wall 13 and the drawer 2. The oxygen-reducing module 8 is equipped with an exhaust pipe 81 that extends through a through-hole. The oxygen-reducing module 8 is configured to separate oxygen from the gas.

[0138] The air pump 20, connected to the air outlet pipe 81, is configured to draw in the separated oxygen.

[0139] The oxygen reduction module 8 includes a nitrogen-oxygen separation membrane, which is a membrane that selectively allows nitrogen or oxygen to pass through in order to separate nitrogen and oxygen. The oxygen reduction module 8 can be cuboid in shape and has a small dimension along the second direction y.

[0140] The air pump 20 can be installed in the refrigeration area or the non-refrigeration area of ​​the refrigerator, such as inside the compression chamber.

[0141] This embodiment, by incorporating an oxygen-reducing module 8 and an air pump 20, reduces the oxygen content within drawer 2 and controls the gas environment through suction, thereby improving nutrient retention, preserving color and texture, prolonging aroma retention, and inhibiting microbial growth to enhance food safety. Furthermore, since drawer 2 is a sealed structure, suction creates negative pressure inside. Excessive negative pressure may cause deformation or damage to the walls of the mounting frame 1. By providing reinforcing ribs 16 on the outer surface of the mounting frame 1, the overall strength and rigidity of the mounting frame 1 can be increased.

[0142] In some embodiments, such as Figure 4 As shown, the refrigerator drawer also includes:

[0143] Pressure sensor 70 is configured to detect the pressure inside drawer 2; and

[0144] Air valve 5 is located on the outer side of the rear wall 13;

[0145] When drawer 2 needs to be opened, or when the negative pressure inside drawer 2 is lower than the preset pressure, the air valve 5 is in the on state to release pressure; when drawer 2 is closed, the air valve 5 is in the off state to maintain negative pressure.

[0146] For example, the pressure sensor can be located on the outside of the rear wall 13 of the mounting frame 1, and the probe can be inserted into the rear wall 13 for detection. Figure 4 In the middle, the air valve 5 is located in the area of ​​the rear wall 13 along the first direction x close to one side.

[0147] For example, the air valve 5 can be a solenoid valve, or a mechanical valve can be selected. If it is a mechanical valve, the pressure sensor 70 may not be required.

[0148] This embodiment, by setting the air valve 5, which is normally in the off state, cuts off the communication between the inside and outside of drawer 2, maintaining negative pressure inside drawer 2. When the user needs to open the ice-temperature de-oxidation drawer, due to the negative pressure inside the drawer and the return pull of the guide rails, it is difficult for the user to open drawer 2 easily. At this time, the user needs to give the refrigerator a command to open the ice-temperature drawer (which can be selected on the control panel or by voice control). Upon receiving the command, the air valve 5 is energized and turned on, releasing pressure and eliminating the negative pressure inside drawer 2, making it easier for the user to open drawer 2. Moreover, when drawer 2 is closed, if the internal negative pressure is lower than the preset pressure, the walls of the mounting frame 1 may deform, affecting the lifespan of the drawer. In this case, the air valve 5 can also be turned on to release pressure. Thus, the air valve 5 and the pressure sensor 70 work together to effectively protect the refrigerator drawer.

[0149] In some embodiments, such as Figure 5 and Figure 6As shown, the refrigerator drawer also includes a sealing knob 7. A connector 131 is provided on the outer surface of the rear wall 13. The connector 131 has an external thread, and a through hole passes through the rear wall 13 and the connector 131. The sealing knob 7 is screwed onto the connector 131 and is configured to seal the gap between the vent pipe 81 and the connector 131.

[0150] The connector 131 protrudes from the outer surface of the rear wall 13, has a cylindrical structure, and is threaded externally. The oxygen reduction module 8 is provided with an outlet pipe 81, which passes through the connector 131. The sealing knob 7 is sleeved on the connector 131, and a sealing ring 132 can be provided between the end of the connector 131 and the mating surface of the sealing knob 7 to increase the sealing performance. The air valve 5 can draw oxygen from the sealing knob 7.

[0151] This embodiment improves the sealing between the air outlet pipe 81 and the connector 131 by setting the sealing knob 7, preventing air leakage when the air valve 5 draws in air, improving air tightness, and reducing the oxygen content in the drawer 2 more efficiently during suction, thereby improving nutrient retention and maintaining color and texture.

[0152] In some embodiments, the refrigerator drawer further includes:

[0153] The seal 10, disposed around the opening of the mounting frame 1, is configured to seal when the drawer 2 is closed.

[0154] For example, the seal 10 may be a rectangular frame structure that can be fixed at the opening of the mounting frame 1 and surround the opening of the mounting frame 1 in the entire circumference.

[0155] This embodiment, by providing a sealing element 10 at the opening of the mounting frame 1, forms a seal between the drawer 2 and the opening of the mounting frame 1 after the drawer 2 is closed, improving airtightness. During suction, this more efficiently reduces the oxygen content inside the drawer 2, improving nutrient retention and maintaining color and texture. Furthermore, when the drawer 2 is closed, it also prevents the loss of cold air and moisture from fruits and vegetables, improving the refrigeration effect.

[0156] In some embodiments, such as Figure 3 As shown, the refrigerator drawer also includes:

[0157] Magnet 50 is located at the back of drawer 2; and

[0158] A proximity switch 60, located on the inner surface of the rear wall 13 of the mounting frame 1, is configured to sense the magnet 50 and to issue a trigger signal when the drawer 2 is closed in the correct position.

[0159] This embodiment uses a magnet 50 and a proximity switch 60 to dynamically detect the pulled-out or closed state of drawer 2. When drawer 2 is detected to be fully closed, the air pump 20 is activated to draw air, creating negative pressure inside drawer 2 until the oxygen concentration inside drawer 2 reaches a preset value. Therefore, this detection method can accurately determine when to begin drawing oxygen from drawer 2.

[0160] In some embodiments, the refrigerator drawer further includes:

[0161] The first temperature sensor, located inside the mounting frame 1, is configured to detect the temperature inside the drawer 2; and

[0162] The second temperature sensor, located inside the air duct plate 3, is configured to detect the intake air temperature.

[0163] Alternatively, the temperature sensor can be placed in other locations.

[0164] This embodiment takes into account the difficulty of achieving absolutely uniform temperature in different locations within the refrigerator drawer. The temperature is lowest at the air inlet, and rises slightly after airflow passes through it. Since drawer 2 is the target temperature control area, sensors are installed at these two locations. The temperature inside the refrigerator compartment can be controlled by combining the air inlet temperature and the temperature inside drawer 2. Alternatively, the average value of the detection values ​​from the first and second temperature sensors can be calculated to control the temperature inside the refrigerator compartment. For example, the average temperature can be stably maintained at -0.5 ± 0.1℃.

[0165] In some specific embodiments, such as Figure 1 and Figure 2 As shown, in order to ensure the uniformity of temperature distribution in drawer 2 and improve heat exchange efficiency, the air duct plate 3 is placed on top of the mounting frame 1, and the two side walls 12 and bottom wall 17 of the mounting frame 1 are covered with crisscrossing guide ribs 15 to form a 3D wrap-around air duct that can wrap around the entire mounting frame 1. The air duct plate 3 has an air inlet 41 at the center of the rear of the mounting frame 1. The groove 4 on the air duct plate 3 forms a flow channel 19 to guide the airflow. The flow channel 19 aims to fill the top of the mounting frame 1 with airflow as much as possible, and also directs the airflow to the sides of the mounting frame 1. Therefore, higher side guide ribs 15 are provided on both sides of the mounting frame 1 at the air outlet 42 of the flow channel 19. The airflow flows along the side guide ribs 15 to the bottom of the mounting frame 1. Higher guide ribs 15 are also provided at the bottom. The second rib segment 152 at the bottom is circumferentially connected to the first rib segment 151 on both sides. After the airflow flows from both sides to the bottom of the mounting frame 1, it is drawn to the return air inlet 40 located at the rear of the mounting frame 1. The overall airflow path forms a 3D wrap-around air supply circulation, enveloping the mounting frame 1. By using external convection heat exchange and internal cavity infiltration cooling, the airflow is not directly blown, making the temperature inside the oxygen reduction chamber more uniform.

[0166] Secondly, this disclosure provides a refrigerator, including the refrigerator drawers of the above embodiments. For example, one or more refrigerator drawers may be provided, and multiple refrigerator drawers may be stacked along a third direction z, or arranged side by side along a first direction x.

[0167] The refrigerator drawer in this embodiment is designed with a 3D wraparound airflow duct. As the airflow passes through the outer surface of the mounting frame 1, convective heat exchange occurs. The cooling energy gradually penetrates the inner cavity through the wall of the mounting frame 1, preventing direct cold air from blowing into the drawer 2 and reducing moisture loss from refrigerated vegetables and fruits. Furthermore, the airflow duct wraps around the mounting frame 1 circumferentially, allowing the cooling energy to quickly reach all parts of the mounting frame 1, improving heat exchange efficiency and rapidly reaching the required refrigeration temperature. This also results in a more uniform temperature within the drawer 2, providing a suitable temperature and humidity environment for storing fruits and vegetables, effectively extending their storage time, ensuring their quality, and improving the refrigeration effect.

[0168] Furthermore, the air duct structure is designed with air outlets on both sides, and the top wall 11, two side walls 12, and bottom wall 17 of the mounting frame 1 also participate in heat exchange simultaneously, increasing the heat exchange area and avoiding condensation problems caused by localized low temperatures in the mounting frame 1 due to concentrated localized cold energy. Simultaneously, even under extreme ambient temperatures, if the air duct's prolonged airflow and heat exchange cause low temperatures on the side walls of the mounting frame 1, the areas with temperatures below the dew point are distributed on the two side walls 12 of the mounting frame 1. This prevents water droplets from dripping onto food, thus avoiding impacting the user experience.

[0169] In addition, the flow direction of the gas in the air duct is parallel to the direction of the guide ribs 15 on the wall of the mounting frame 1. This arrangement helps the airflow maintain its speed when flowing on the outer wall of the mounting frame 1, reduces the velocity decay, and avoids obvious vortex phenomena, thereby improving the airflow circulation efficiency, improving the heat exchange efficiency, and reducing energy consumption.

[0170] In some embodiments, the refrigerator further includes a compartment with at least one refrigerator drawer and an air duct.

[0171] The air supply duct includes: a main air supply duct and at least one branch air supply duct, the branch air supply duct being connected to the main air supply duct and the branch air supply duct being connected to the air inlet 41 of the flow channel 19.

[0172] The compartment is equipped with a return air vent 40, which is configured to allow airflow from the bottom of the mounting frame 1 to return.

[0173] For example, the compartment can be a refrigerated compartment or a freezer compartment. The air supply duct of the compartment can be located inside its rear panel, and the return air vent 40 inside the compartment can be located on the inner wall of the rear panel of the compartment. For example, the return air vent 40 can be equipped with a return air grille or an air guide plate.

[0174] For example, multiple refrigerator drawers can be provided, and multiple branch air ducts are configured to provide cold air to the return air vents 40 of multiple refrigerator drawers in a one-to-one correspondence.

[0175] In this embodiment, airflow is supplied to the air inlet 41 of the refrigerator drawer through an air duct within the refrigerator compartment. (Ref.) Figure 8 The diagram illustrates the gas flow direction. After entering through the inlet 41, the airflow moves forward along the first flow channel 191 and then flows to the left and right along the second flow channel 192. Upon reaching the outlets 42 on both sides, it flows along the first air guide channels 14 on the side walls 12 and bottom wall 17, circling the mounting frame 1 to form a three-dimensional surround airflow. Each first air guide channel 14 forms a complete annular extension channel. When the airflow reaches the bottom wall 17 along the first air guide channel 14, it converges into the second air guide channel 30 and flows along the second direction y, eventually returning to the return air inlet 40 before entering the evaporator for cooling.

[0176] like Figure 9 As shown, the airflow temperature is lowest near the air inlet 41, for example, in the yellow-green area. The temperature gradually increases during the flow. The temperature of the first air guide channel 14 is at an intermediate temperature on the top wall 11 and side wall 12, and the temperature of the first air guide channel 14 is at its highest on the bottom wall 17.

[0177] Finally, this disclosure provides a control method for a refrigerator based on the above embodiments. In some embodiments, the control method includes:

[0178] Keep air valve 5 in the off state;

[0179] Upon receiving a signal that drawer 2 is closed, the air pump 20 is activated to draw air, creating a negative pressure inside drawer 2.

[0180] When the oxygen concentration in drawer 2 reaches the preset concentration value, the air pump 20 stops working.

[0181] When the user opens drawer 2, places fruits and vegetables inside, and closes it, the magnet 50 on the back of drawer 2 senses the proximity switch 60 on the mounting frame 1, indicating that drawer 2 is closed. The system then controls the air pump 20 to operate, at which point the air valve 5 (e.g., a solenoid valve) closes, and oxygen is extracted from drawer 2. After a preset time (e.g., 2 hours), the air pump 20 stops operating, and the oxygen concentration inside drawer 2 reaches 12% (the pressure inside drawer 2 can reach 0.88 atmospheres). At this point, the temperature inside drawer 2 is the same as the temperature of the refrigerator compartment.

[0182] In the control method of this embodiment, the air valve 5 is normally in the open state, cutting off the passage connecting the inside and outside of drawer 2, thus isolating the inside and outside of drawer 2. At this time, the air pump 20 is started to draw out some of the oxygen inside drawer 2, creating a negative pressure. By reducing the oxygen content inside drawer 2, the gas environment is effectively controlled, improving the retention of nutrients, maintaining color and texture, prolonging aroma retention, inhibiting the growth of microorganisms to improve food safety, and enhancing the refrigeration effect. Moreover, the drawing stops when the oxygen concentration reaches the preset concentration to prevent the negative pressure from being too low, which would affect the refrigeration effect of fruits and vegetables, and to prevent the mounting frame 1 from deforming.

[0183] In some embodiments, the control method further includes:

[0184] Upon receiving a user's instruction to open drawer 2, or when the negative pressure inside drawer 2 is lower than the preset pressure, the air valve 5 is switched to the on state to release the pressure inside drawer 2.

[0185] In the depressurized state, the space inside drawer 2 is connected to the outside of drawer 2.

[0186] In this embodiment, when a user needs to open the ice-temperature de-oxidation drawer, due to the negative pressure inside the drawer and the return force of the guide rails, it is difficult for the user to open drawer 2 easily. In this case, the user needs to give the refrigerator a command to open the ice-temperature drawer (which can be selected on the control panel or controlled by voice). Upon receiving the command, the gas valve 5 is energized and in the on state, releasing pressure and eliminating the negative pressure inside drawer 2, making it easier for the user to open drawer 2. Furthermore, when drawer 2 is closed, if the internal negative pressure is lower than the preset pressure, the walls of the mounting frame 1 may deform, affecting the drawer's lifespan. In this case, the gas valve 5 can also be activated to release pressure. Therefore, the gas valve 5 and the pressure sensor 70 work together to effectively protect the refrigerator drawer.

[0187] In some embodiments, the control method further includes:

[0188] In response to the ice-temperature refrigeration command, the opening of the air damper in the air supply duct is adjusted to lower the temperature inside drawer 2 to the preset temperature and maintain it.

[0189] After harvesting, fruits and vegetables continue to metabolize and maintain their physiological systems. However, due to the interruption of normal sources of water, photosynthetic products, and minerals, the products rely entirely on their stored nutrients and water to survive. When the necessary substances cannot be supplied in time, spoilage begins. In this embodiment, the refrigerator drawer first performs pre-cooling treatment through temperature control, and finally stabilizes the overall temperature of drawer 2 at the freezing point of fruits and vegetables, thereby slowing down the respiration and evaporation of fruits and vegetables, maintaining the freshness of food, and achieving ice-temperature storage.

[0190] If the user puts in fruits and vegetables that need to be stored at a low temperature, after closing drawer 2, drawer 2 can automatically reduce oxygen levels. At this time, the user needs to give the refrigerator the command to enter the low temperature function (the function can be selected on the control panel or voice control). The air vents in the refrigerator's cooling duct will open and close to adjust the temperature and lower the temperature of drawer 2 to the preset temperature and maintain it, for example, -0.5℃.

[0191] The control method for the ice-temperature-reducing and oxygen-lowering drawer and refrigerator disclosed in this embodiment provides a suitable temperature, gas, and humidity environment for fruit and vegetable storage, effectively extending the storage time of fruits and vegetables and ensuring the storage quality of fruits and vegetables.

[0192] The control method described in the above embodiments can be executed by a controller.

[0193] The present disclosure provides a detailed description of a refrigerator drawer and a refrigerator. Specific embodiments have been used to illustrate the principles and implementation methods of the present disclosure. These embodiments are merely illustrative and are intended to aid in understanding the method and core concepts of the present disclosure. It should be noted that those skilled in the art can make various improvements and modifications to the present disclosure without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of this disclosure.

Claims

1. A refrigerator drawer, characterized in that, include: The mounting frame (1) includes a top wall (11), a bottom wall (17) and two side walls (12), the two side walls (12) being connected between the top wall (11) and the bottom wall (17) and located at both ends along a first direction (x), the mounting frame (1) having an opening at the front; Drawer (2), inserted into mounting frame (1) through the opening along a second direction (y), the second direction (y) being perpendicular to the first direction (x); and A duct plate (3) is provided on the outside of the mounting frame (1) and on the top wall (11). The surface of the duct plate (3) facing the top wall (11) is provided with a groove (4). A flow channel (19) is formed between the groove (4) and the top wall (11). The air inlet (41) of the flow channel (19) is located in the middle area of ​​the rear part of the mounting frame (1) along the first direction (x). The air outlet (42) of the flow channel (19) is located on both sides of the duct plate (3) along the first direction (x). The outer wall of the mounting frame (1) is provided with a guide rib group, which includes at least two first rib segments (151) spaced apart along the second direction (y) on each side wall (12). A first air guide channel (14) is formed between adjacent first rib segments (151). A second air guide channel (15) is provided on the bottom wall (17). The first ends of the first air guide channels (14) on both sides are respectively connected to the air outlets (42) on both sides of the flow channel (19). The second ends of the first air guide channels (14) on both sides are respectively connected to the two ends of the second air guide channel (15).

2. The refrigerator drawer according to claim 1, characterized in that, The flow channel (19) includes: A first flow channel (191) extends along the second direction (y) and is located in the middle region of the air duct plate (3) along the first direction (x), with the rear end of the first flow channel (191) serving as the air inlet (41); and The second flow channel (192) extends along the first direction (x) and forms the air outlets (42) on both sides of the air duct plate (3), and the second flow channel (192) is connected to the first flow channel (191).

3. The refrigerator drawer according to claim 2, characterized in that, The flow channel (19) includes a plurality of second flow channels (192) spaced apart along the second direction (y).

4. The refrigerator drawer according to claim 3, characterized in that, The width of the first flow channel (191) gradually increases from the air inlet (41) to the second flow channel (192) closest to the air inlet (41); and / or The width of the first flow channel (191) between each group of adjacent second flow channels (192) decreases gradually along the airflow direction, and is all less than the width of the first flow channel (191) at the point where it connects with the second flow channel (192) closest to the air inlet (41).

5. The refrigerator drawer according to claim 1, characterized in that, The guide rib assembly also includes: At least two second rib segments (152) are spaced apart on the bottom wall (17) along the second direction (y), and a second air guide channel (15) is formed between adjacent second rib segments (152); Among them, at least two second rib segments (152) correspond one-to-one with at least two first rib segments (151), and the two ends of the second rib segments (152) are respectively connected to the bottom ends of the corresponding first rib segments (151) on the two side walls (12).

6. The refrigerator drawer according to claim 5, characterized in that, The first rib segment (151) extends along a third direction (z) on the side wall (12), and the top ends of the two first rib segments (151) are adjacent to the air outlet (42) on the corresponding side. The third direction (z) is perpendicular to the first direction (x) and the second direction (y). The second rib segment (152) is provided on the bottom wall (17) and extends along the first direction (x).

7. The refrigerator drawer according to claim 1, characterized in that, At least one set of support members is provided on the bottom wall (17) along the second direction (y), which is configured to support the mounting frame (1) in the refrigerator compartment; Each set of the support components includes a plurality of support frames (18) spaced apart along the first direction (x), and a third air guide channel (30) extending along the second direction (y) is formed between two adjacent support frames (18). The third air guide channel (30) communicates with the second air guide channel (15), and the third air guide channel (30) is configured to guide the airflow at the bottom of the mounting frame (1) to the return air vent (40) of the refrigerator compartment.

8. The refrigerator drawer according to claim 7, characterized in that, The support frame (18) and the second air guide channel (15) are completely offset in the second direction (y).

9. The refrigerator drawer according to claim 1, characterized in that, The outer wall of the mounting frame (1) is provided with reinforcing ribs (16), which form a grid, and the protrusion height of the reinforcing ribs (16) is lower than the height of the guide rib group.

10. The refrigerator drawer according to claim 1, characterized in that, The mounting frame (1) further includes a rear wall (13), on which a through hole is provided, and the refrigerator drawer further includes: An oxygen-reducing module (8) is installed on the rear wall (13) and located between the rear wall (13) and the drawer (2). The oxygen-reducing module (8) is provided with an exhaust pipe (81) that extends through the through-hole. The oxygen-reducing module (8) is configured to separate oxygen from the gas. An air pump (20), connected to the air outlet pipe (81), is configured to draw in the separated oxygen.

11. The refrigerator drawer according to claim 10, characterized in that, Also includes: A pressure sensor (70) is configured to detect the pressure inside the drawer (2); and An air valve (5) is located on the outside of the rear wall (13); When the drawer (2) needs to be opened, or when the negative pressure inside the drawer (2) is lower than the preset pressure, the air valve (5) is in the on state to release pressure; when the drawer (2) is closed, the air valve (5) is in the off state to maintain negative pressure.

12. The refrigerator drawer according to claim 10, characterized in that, Also includes: A sealing knob (7) is provided on the outer surface of the rear wall (13), and the connector (131) has an external thread. The through hole penetrates the rear wall (13) and the connector (131). The sealing knob (7) is screwed onto the connector (131) and is configured to seal the gap between the air outlet pipe (81) and the connector (131).

13. The refrigerator drawer according to any one of claims 1 to 12, characterized in that, Also includes: A seal (10), disposed around the opening of the mounting frame (1), is configured to seal when the drawer (2) is closed.

14. The refrigerator drawer according to any one of claims 1 to 12, characterized in that, Also includes: A magnet (50) is provided at the rear of the drawer (2); and A proximity switch (60), located on the inner surface of the rear wall (13) of the mounting frame (1), is configured to sense the magnet (50) and to issue a trigger signal when the drawer (2) is closed in place.

15. The refrigerator drawer according to any one of claims 1 to 12, characterized in that, Also includes: A first temperature sensor, located inside the mounting frame (1), is configured to detect the temperature inside the drawer (2); and The second temperature sensor, located inside the air duct plate (3), is configured to detect the intake air temperature.

16. A refrigerator, characterized in that, Includes the refrigerator drawer as described in any one of claims 1 to 15.

17. The refrigerator according to claim 16, characterized in that, It also includes a compartment, wherein at least one of the refrigerator drawers is provided in the compartment, and an air supply duct is provided in the compartment. The air supply duct includes: a main air supply duct and at least one branch air supply duct, wherein the branch air supply duct is connected to the main air supply duct and the branch air supply duct is connected to the air inlet (41) of the flow channel (19); The compartment is provided with a return air vent (40) and is configured to allow airflow from the bottom of the mounting frame (1) to return.

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