A refrigerator

Abstract

The application provides a refrigerator, which comprises a refrigerator, at least two drawers for storing objects in the storage chamber of the refrigerator; wherein an outer wall of one drawer is provided with a position opening, the position opening is communicated with at least one air outlet of an air duct assembly of the refrigerator to form a variable-temperature drawer; an outer wall of another drawer is clamped together with an outer wall of the air duct assembly and an inner wall of the refrigerator to form a return air area of a return air outlet of the refrigerator; air is independently discharged through the at least two air outlets of the air duct assembly to form different temperature adjustments inside and outside the variable-temperature drawer in the refrigerator. The variable-temperature drawer is provided with the position opening, so that cold air in the air duct assembly can be effectively transmitted into the variable-temperature drawer, and the air inlet effect of the variable-temperature drawer is improved. The position of the other drawer is limited to block the return air flow at the return air outlet, so as to slow down the return air speed outside the variable-temperature drawer and achieve the heat preservation effect of the variable-temperature drawer.

Description

Technical Field

[0001] This invention relates to the field of home appliance technology, and more particularly to a refrigerator. Background Technology

[0002] As people have higher requirements for food storage, they are paying more and more attention to the taste of food stored in the refrigerator. Different types of food correspond to different optimal storage temperatures, but the temperature inside the refrigerator is relatively uniform, which cannot help users preserve different types of food more effectively. Summary of the Invention

[0003] To help users categorize and store items according to their required storage temperature, this invention provides a refrigerator with a variable-temperature drawer that can provide different temperature storage environments. Furthermore, an opening is provided in the variable-temperature drawer to improve airflow.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions.

[0005] This invention provides a refrigerator, comprising a refrigerator compartment having at least two drawers for storage; wherein,

[0006] A drawer has a clearance opening on its outer wall, which connects to at least one air outlet of the refrigerator's air duct assembly to form a variable temperature drawer.

[0007] The outer wall of the other drawer, together with the outer wall of the air duct assembly and the inner wall of the refrigerator, forms the return air area of ​​the refrigerator's return air vent;

[0008] The air duct assembly has at least two independent air outlets to create different temperatures inside and outside the refrigerator's variable temperature drawer.

[0009] Preferably, the variable temperature drawer is located below the refrigerator shelf; the outer wall of the air duct assembly forms an isolation structure with the variable temperature drawer and the shelf to prevent airflow inside the variable temperature drawer from flowing into the return air area.

[0010] Preferably, at least one drawer is provided with a moisture-retaining structure to regulate the humidity environment inside the drawer, thereby forming a moisture-retaining drawer.

[0011] Preferably, the variable temperature drawer has at least one drawer on one side.

[0012] Preferably, the refrigerator is equipped with a fixed frame, and the variable temperature drawer and another drawer are respectively slidably disposed within the two frame areas of the fixed frame.

[0013] Preferably, the fixing bracket is slidably connected to the inner surfaces of both sides of the refrigerator liner.

[0014] Preferably, the mounting bracket is fixed inside the refrigerator liner.

[0015] Preferably, the mounting bracket includes:

[0016] Shelves, with their sides connected to the refrigerator liner;

[0017] The bracket is fixed below the shelf to divide the area below the shelf into two frame areas; the bracket has a slide rail on each of its left and right sides to slide and connect to one side wall of each drawer; the bottom of the bracket is inserted into the refrigerator liner.

[0018] Preferably, the refrigerator includes an air guide nozzle with an air guide channel; one end of the air guide channel is connected to the air outlet of the refrigerator's air duct assembly, and the other end extends into the clearance opening to form a separate cooling path for the variable temperature drawer; the air guide nozzle is fastened to the air duct assembly.

[0019] Preferably, a temperature sensor is provided at the location of the air duct assembly corresponding to the position of the temperature-controlled drawer.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] This invention provides a refrigerator in which the variable-temperature drawer is provided with an opening to facilitate the effective transfer of cold air from the air duct assembly into the drawer, thereby improving the air intake effect of the variable-temperature drawer. The position of another drawer is used to limit the return airflow at the return air vent, thus slowing down the return air speed from outside the variable-temperature drawer and achieving a heat preservation effect on the drawer.

[0022] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it according to the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Specific embodiments of the present invention are given in detail below with reference to the accompanying drawings. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0024] Figure 1 This is an exploded view of a partial structure of the refrigerator in the first embodiment of the present invention. Figure 1 ;

[0025] Figure 2 This is a structural cross-sectional view of the refrigerator in the first embodiment of the present invention. Figure 1 ;

[0026] Figure 3 This is a three-dimensional structural diagram of the shelf in the first embodiment of the present invention;

[0027] Figure 4 This is a three-dimensional structural diagram of the bracket in the first embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the assembly structure of the fixing bracket, the temperature-regulating drawer, and the humidity-regulating drawer in the second embodiment of the present invention;

[0029] Figure 6 This is a three-dimensional structural diagram of the back plate in the second embodiment of the present invention;

[0030] Figure 7 This is a three-dimensional structural diagram of the first cover body of the present invention;

[0031] Figure 8 This is an enlarged view of the assembly structure of the first cover and the first box body in the first embodiment of the present invention;

[0032] Figure 9 This is an enlarged view of the shelf structure in the first embodiment of the present invention;

[0033] Figure 10 This is a three-dimensional structural diagram of the air guide nozzle of the present invention;

[0034] Figure 11 This is a partial three-dimensional structural diagram of the refrigerator in the first embodiment of the present invention;

[0035] Figure 12 This is a structural cross-sectional view of the refrigerator in the first embodiment of the present invention. Figure 1 ;

[0036] Figure 13 This is a structural cross-sectional view of the refrigerator in the first embodiment of the present invention. Figure 2 ;

[0037] Figure 14 This is an exploded view of a partial structure of the refrigerator in the first embodiment of the present invention. Figure 2 ;

[0038] Figure 15 This is a partial enlarged view of the structure of the duct cover plate of the present invention. Figure 1 ;

[0039] Figure 16 This is a partial enlarged view of the structure of the duct cover plate of the present invention. Figure 2 ;

[0040] Figure 17 This is an exploded view of the air duct assembly of the present invention;

[0041] Figure 18 This is a partial three-dimensional structural diagram of the refrigerator in the first embodiment of the present invention.

[0042] In the picture: 100, refrigerator;

[0043] 10. Air guide nozzle; 11. Air guide channel; 12. Buckle; 13. Abutting part; 14. Cover plate; 141. Recessed part; 15. Air guide extension end; 151. First end face; 152. Second end face;

[0044] 20. Air duct assembly; 21. Air duct cover; 211. First air outlet; 212. First mounting part; 213. Receiving groove; 214. First snap-fit ​​structure; 215. Second air outlet; 216. Abutment plate; 2161. Abutment rib; 217. Groove; 218. Guide groove; 22. Air duct plate; 221. First air supply duct; 222. Second air supply duct; 223. Wiring groove; 224. Clearance groove; 23. Decorative panel; 231. Notch; 24. Back panel;

[0045] 301. Temperature-controlled drawer; 31. First box body; 311. Clearance opening; 32. First lid; 321. Recess; 322. First snap-fit ​​protrusion; 323. First side wall; 3231. First extension edge; 324. Second side wall; 3241. Second extension edge; 325. Reinforcing rib; 302. Refrigeration drawer; 33. Second box body; 34. Second lid; 341. Hollow area;

[0046] 40. Sealing ring;

[0047] 50. Refrigerator liner; 51. Return air vent; 52. Return air cover;

[0048] 60. Temperature sensor;

[0049] 70. Filter element structure;

[0050] 80. Glass shelf;

[0051] 90. Fixing frame; 91. Shelf; 911. First slot; 9111. First abutting arm; 9112. Second abutting arm; 912. Second slot; 9121. Third abutting arm; 9122. Fourth abutting arm; 913. Limiting groove; 914. Support part; 92. Bracket; 921. Second snap-fit ​​protrusion; 93. Cavity; 94. Back plate; 941. Air guide structure. Detailed Implementation

[0052] The invention will now be described in further detail with reference to the accompanying drawings, which will make the foregoing and other objects, features, aspects, and advantages of the invention more apparent, enabling those skilled in the art to practice it upon referring to the text of the specification. In the drawings, shapes and dimensions are enlarged for clarity, and the same reference numerals are used throughout the figures to indicate the same or similar parts. In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc., are used based on the orientation or positional relationship shown in the drawings. In particular, “height” corresponds to the dimension from top to bottom, “width” corresponds to the dimension from left to right, and “depth” corresponds to the dimension from front to back. These relative terms are for ease of explanation and are not generally intended to require a specific orientation. Terms relating to attachment, connection, etc. (e.g., “connection” and “attachment”) refer to the relationship in which these structures are directly or indirectly fixed or attached to each other by an intermediate structure, and to movable or rigid attachments or relationships, unless otherwise explicitly stated.

[0053] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0054] Example 1

[0055] This invention provides a refrigerator, such as Figure 1 , Figure 5 , Figure 18 As shown, the refrigerator 100 includes a storage compartment with two drawers for storage; wherein,

[0056] A drawer has a clearance opening 311 on its outer wall, which is connected to at least one air outlet of the refrigerator's air duct assembly to form a variable temperature drawer 301.

[0057] The outer wall of the other drawer, together with the outer wall of the air duct assembly and the inner wall of the refrigerator, forms the return air area of ​​the refrigerator's return air vent 51;

[0058] The independent air outlets of the air duct assembly allow for different temperature regulation inside and outside the variable temperature drawer 301 of the refrigerator.

[0059] In this embodiment, by providing a temperature-controlled drawer 301 inside the refrigerator 100, and the storage cavity inside the temperature-controlled drawer 301 being sealed or relatively sealed, the internal temperature of the temperature-controlled drawer 301 can be adjusted by changing the air intake volume inside the temperature-controlled drawer 301 to meet the storage temperature requirements of different items and extend the storage life.

[0060] By creating a clearance opening 311 on the variable temperature drawer 301, the cold air in the air duct assembly is effectively transferred into the variable temperature drawer 301, thereby improving the air intake effect of the variable temperature drawer 301. The return air vent 51 is located at the back of another drawer. Through the blocking effect of this drawer, the external return air resistance of the variable temperature drawer 301 is increased, and the rate of gas overflow from the variable temperature drawer 301 is slowed down.

[0061] It should be understood that the refrigerator 100 in the above embodiment has two drawers, but this is only for the convenience of describing the technical solution. In other embodiments, the refrigerator 100 may have three, four or even more drawers to enrich the categorized refrigeration function.

[0062] In one embodiment, the variable temperature drawer 301 is positioned below the refrigerator shelf; the outer wall of the air duct assembly 20 forms an isolation structure with the variable temperature drawer 301 and the refrigerator shelf to prevent airflow within the variable temperature drawer 301 from flowing towards the return air area. Specifically, the obstruction by the shelf and the drawer opposite the return air vent 51 slows down the return air velocity around the variable temperature drawer 301, thereby achieving the function of heat preservation and temperature control of the outer wall of the variable temperature drawer 301.

[0063] In one embodiment, the variable temperature drawer 301 is located near the bottom wall of the refrigerator liner to shorten its distance from the refrigerator's internal cooling device and improve the temperature change speed.

[0064] In one embodiment, a drawer is equipped with a humidity-regulating structure to adjust the humidity environment inside the drawer, forming a humidity-regulating drawer 302. Specifically, the humidity-regulating drawer 302 is provided with a humidity-regulating structure 303. Airflow inside and outside the humidity-regulating drawer 302 exchanges after passing through the humidity-regulating structure 303. The humidity-regulating structure 303 adjusts the airflow exchange speed inside and outside the humidity-regulating drawer 302, thereby achieving a humidity effect and providing a suitable humidity environment for storing items, extending their storage life. By setting up a variable-temperature drawer 301 and a humidity-regulating drawer 302, the refrigerator 100's categorized storage functions are enriched, providing diverse storage environments.

[0065] Furthermore, the back of the humidifying drawer 302 corresponds to the position of the return air vent 51, and the humidifying drawer 302, together with the outer wall of the air duct assembly and the inner wall of the refrigerator, forms the return air area of ​​the refrigerator's return air vent 51.

[0066] In one embodiment, the variable-temperature drawer 301 has a drawer on at least one side to slow down the airflow speed from side to side. Specifically, the air duct assembly 20 includes two air outlets: a second air outlet 215 is the main air outlet, located at the top of the refrigerator liner, forming a downward cooling airflow; the first air outlet 211 is used to independently supply air to the variable-temperature drawer 301. The downward airflow from the second air outlet 215 slows down the upward overflow speed of gas inside the variable-temperature drawer 301. By arranging another drawer side-by-side with the variable-temperature drawer 301, the left-right overflow speed of the variable-temperature drawer 301 is further limited, thereby slowing down the gas overflow speed of the variable-temperature drawer 301 to facilitate internal heat preservation. Furthermore, the variable-temperature drawer 301 is located near the bottom wall of the refrigerator liner to slow down the downward overflow speed of gas inside the variable-temperature drawer 301. Furthermore, the back of the other drawer arranged to the left and right of the variable-temperature drawer 301 corresponds to the position of the return air vent 51 to further slow down the gas overflow speed of the variable-temperature drawer 301. It should be understood that the air duct assembly 20 also includes a third air outlet, a fourth air outlet, or even more, to improve the air outlet effect.

[0067] In another embodiment, the variable-temperature drawer 301 and another drawer are arranged sequentially along the height of the refrigerator, with both drawers located in the same vertical position, suitable for a single-door refrigerator compartment. Furthermore, the back of the other drawer, which is arranged to the left and right of the variable-temperature drawer 301, corresponds to the position of the return air vent 51, to further slow down the rate of gas leakage from the variable-temperature drawer 301. In one embodiment, the refrigerator 100 is provided with a fixing frame 90, and the variable-temperature drawer 301 and the other drawer are slidably mounted within two frame areas of the fixing frame 90 for assembly.

[0068] In one embodiment, such as Figure 5 As shown, the fixing bracket 90 is slidably connected to the inner surfaces of both sides of the refrigerator liner 50. Specifically, taking the humidifier drawer 302, which is assembled with the variable temperature drawer 301 and is mounted on the fixing bracket 90, as an example, the fixing bracket 90 is pulled out relative to the refrigerator liner 50, thereby causing the variable temperature drawer 301 and the humidifier drawer 302 to move out together. After the fixing bracket 90, variable temperature drawer 301, and humidifier drawer 302 are assembled, they are then inserted into the refrigerator liner 50.

[0069] Furthermore, the mounting bracket 90 is a frame structure with two cavities 93 for slidingly mounting the temperature-controlled drawer 301 and the humidity-controlled drawer 302, respectively. Figure 5 , Figure 6 As shown, the mounting bracket 90 includes a back plate 94. The front panel of the temperature-controlled drawer 301 or the humidification drawer 302 and the back plate 94 together form the front and rear walls of the corresponding cavity 93 to ensure the sealing of the cavity 93. The back plate 94 has an air guide structure 941, one end of which is aligned with at least one air outlet of the air duct assembly 20, and the other end extends into the top of the temperature-controlled drawer 301.

[0070] In yet another embodiment, such as Figure 1 As shown, the fixing bracket 90 is fixed inside the refrigerator liner 50. Specifically, the fixing bracket 90 is stationary, while the variable temperature drawer 301 and another drawer can be pulled out relative to the fixing bracket 90. The fixing bracket 90 has a simple structure and low processing cost. In a specific embodiment, the drawer assembled with the variable temperature drawer 301 on the fixing bracket 90 is a humidifier drawer 302.

[0071] In one embodiment, such as Figures 1 to 4 As shown, the mounting bracket 90 includes:

[0072] Shelf 91, with its two sides connected to the refrigerator liner 50;

[0073] A bracket 92, fixed below the shelf 91, divides the area below the shelf 91 into two frame areas. Each of the left and right sides of the bracket 92 has a slide rail for sliding connection to one side wall of each drawer. Specifically, taking the humidifier drawer 302, which is assembled with the variable-temperature drawer 301 on the fixed frame 90, as an example, both side walls of the variable-temperature drawer 301 and the humidifier drawer 302 are slidably connected to the bracket 92 and the refrigerator liner 50. Assembling the fixed frame 90 with the shelf 91 and the bracket 92 simplifies the structural design of the fixed frame 90 and reduces its space occupation. Separating the shelf 91 and the bracket 92 simplifies mold complexity and reduces costs. Furthermore, the weight of the variable-temperature drawer 301 and the humidifier drawer 302 is transferred to the side walls of the refrigerator liner via the shelf 91 and to the bottom wall of the refrigerator liner via the bracket 92, reducing the load on the side walls and thus lowering the structural strength requirements for the refrigerator liner. The outer wall of the air duct assembly 20 forms an isolation structure with the temperature-controlled drawer 301 and the shelf 91 to prevent the airflow inside the temperature-controlled drawer 301 from flowing to the return air area.

[0074] Furthermore, such as Figure 2 As shown, the bottom end of the bracket 92 is inserted into the refrigerator liner 50, making assembly simple and detachable. In a specific embodiment, the bottom end of the shelf 91 is provided with a limiting groove 913, and the top end of the bracket 92 is inserted into the limiting groove 913; the inner surface of the refrigerator liner 50 is provided with several mounting grooves, and the bottom end of the bracket 92 is provided with several second snap-fit ​​protrusions 921, which snap together to fix the bottom end of the bracket 92.

[0075] In one embodiment, such as Figure 1 As shown, the variable temperature drawer 301 includes a first box body 31, and a clearance opening 311 is provided on at least one side wall of the first box body 31 facing the refrigerator liner 50. The clearance opening 311 corresponds to at least one air outlet of the refrigerator air duct assembly 20 so that cold air from the air outlet is blown into the storage cavity.

[0076] In one embodiment, the clearance opening 311 is a through groove or notch structure, which is simple to create.

[0077] Furthermore, the clearance opening 311 is located on the side wall of the first box 31 facing away from the refrigerator door. Specifically, the air outlet of the air duct assembly 20 faces the refrigerator door to generate cooling airflow from the inside to the outside of the refrigerator storage space. The clearance opening 311 is located on the side wall of the first box 31 facing away from the refrigerator door, shortening the vertical distance between the clearance opening 311 and the air outlet of the air duct assembly 20, thereby shortening the air delivery distance and accelerating the cold air input speed into the first box 31. Furthermore, the clearance opening 311 is located near the top of the first box 31 to prevent the airflow at the clearance opening 311 from being affected by the height of the stored items inside the first box 31, thus affecting its air delivery effect. Furthermore, the clearance opening 311 is open at the top for ease of processing; in addition, the clearance opening 311 makes full use of the top space of the side wall of the first box 31 to avoid obstructing the storage of stored items.

[0078] In one embodiment, the side walls of the first housing 31 are partially or entirely inclined upwards towards the refrigerator door. Specifically, the air continuously blown into the first housing 31 from the first air outlet 211 of the air duct assembly 20 exerts downward pressure on the air inside the first housing 31, reducing the speed of airflow overflow. Since the air from the first air outlet 211 blows from the rear to the front of the first housing 31, the airflow speed decreases when it reaches the front of the first housing 31. Near the refrigerator door inside the first housing 31, the airflow speed from the first air outlet 211 decreases, and the gas in this area rises more easily. By increasing the height of the side walls of the first housing 31 in this area, the speed of airflow overflow in that region is slowed.

[0079] In one embodiment, such as Figure 1 As shown, the shelf 91 has a frame structure, and a support 914 is provided in the frame area for placing the glass shelf 80; the variable temperature drawer 301 and the humidifier drawer 302 are located below the shelf 91. The glass shelf 80 supports items above the shelf 91, and the variable temperature drawer 301 and the humidifier drawer 302 are used to store items below the shelf 91, making full use of the load-bearing capacity of the shelf 91 to divide and form different storage areas, and making full use of the internal space of the refrigerator liner.

[0080] In one embodiment, such as Figure 1 , Figure 7 As shown, the variable temperature drawer 301 also includes a first cover 32, which is disposed between the first box 31 and the shelf 91. A gap is left between the first cover 32 and the first box 31 to allow for the pull-out movement of the first box 31; wherein,

[0081] The first cover 32 has a recessed cavity 321 on the side facing the first box 31. When the first box 31 is closed inside the refrigerator, the cavity 321 forms a surrounding structure above the first box 31 to delay the leakage of cold air. Specifically, by forming the cavity 321 on the first cover 32, when the first box 31 is located below the first cover 32, when the air inside the first box 31 rises to the assembly gap between the first box 31 and the first cover 32, since the space of the cavity 321 is much larger than the size of the assembly gap, the air rising to the assembly gap preferentially flows to the wider area, that is, to the cavity 321, so as to delay the leakage of air inside the first box 31 from the assembly gap between the first box 31 and the first cover 32, that is, to reduce the leakage speed of cold air inside the first box 31, thereby improving the sealing effect of the first box 31.

[0082] To prevent the first box 31 from colliding with the first cover 32 during the pulling process and to improve the sealing of the first cover 32 to the first box 31, the gap between the first cover 32 and the first box 31 is 1mm-2mm.

[0083] In one embodiment, the first cover 32 is fixed to the shelf 91, which is convenient to install, eliminates the need for additional fasteners, and reduces space occupation.

[0084] In one embodiment, the first cover 32 is suspended below the shelf 91 to avoid affecting the placement of the glass shelf 80.

[0085] Furthermore, such as Figure 1 As shown, the first cover 32 is provided with a plurality of first snap-fit ​​protrusions 322 to snap onto the shelf 91, which is easy to assemble and detach, and facilitates replacement or maintenance of the first cover 32.

[0086] Furthermore, at least the front and rear ends of the left and right side walls of the first cover 32 are provided with first snap-fit ​​protrusions 322 to form a stable support.

[0087] In one specific embodiment, such as Figure 7 , Figure 8 , Figure 9 As shown, the first cover 32 has two first snap-fit ​​protrusions 322 on its two opposite side walls, and a matching slot is provided below the shelf 91. The first snap-fit ​​protrusions 322 snap into the slots to achieve the snap-fit ​​of the first cover 32. In order to ensure stable installation and simplify the assembly structure, the lower left and right sides of the shelf 91 are provided with a first slot 911 and a second slot 912, respectively. The first slot 911 and the second slot 912 are respectively close to the two ends of the side wall of the shelf 91 to lock the two ends of the side wall of the first cover 32.

[0088] Furthermore, such as Figure 9As shown, to reduce the difficulty of loading and unloading, the first slot 911 includes a first abutting arm 9111 and a second abutting arm 9112. The first abutting arm 9111 and the second abutting arm 9112 are vertically arranged to abut against the front and rear sides of a first locking protrusion 322 on one side wall of the first cover 32, respectively, to restrict the movement of the first cover 32 in the pulling direction. The second slot 912 includes a third abutting arm 9121 and a fourth abutting arm 9122. The third abutting arm 9121 and the fourth abutting arm 9122 are horizontally arranged to abut against the upper and lower sides of another first locking protrusion 322 on the same side wall of the first cover 32, respectively, to restrict the vertical movement of the first cover 32. Through the limiting of the first slot 911 and the second slot 912, the movement of the first cover 32 in any direction is restricted. In addition, the structural design of the first slot 911 and the second slot 912 reduces the locking force on the corresponding first locking protrusion 322, thereby facilitating loading and unloading.

[0089] Furthermore, such as Figure 7 , Figure 8 As shown, a reinforcing rib 325 is provided on the inner surface of the first cover 32 at the position corresponding to the first snap-fit ​​protrusion 322. Specifically, when the first cover 32 is hoisted under the shelf 91 by the first snap-fit ​​protrusion 322, the first snap-fit ​​protrusion 322 bears the weight of the first cover 32, and the position where the root of the first snap-fit ​​protrusion 322 is located is subjected to tension. By providing the reinforcing rib 325, the deformation caused by the tension at the position where the root of the first snap-fit ​​protrusion 322 is located is buffered, thereby reducing the probability of damage to the structure around the root of the first snap-fit ​​protrusion 322.

[0090] In one embodiment, at least one side wall of the recess 321 surrounds the outer wall of the first housing 31. During the flow of cold air within the first housing 31, it must bend and enter the channel between the side wall of the recess 321 and the outer wall of the first housing 31 before overflowing, thereby increasing the difficulty of cold air leakage from the assembly gap between the first housing 31 and the first cover 32. Specifically, the recess 321 may have one, two, three, or four side walls extending outside the corresponding side walls of the first housing 31 to further enhance the effect of preventing cold air from overflowing from the first housing 31.

[0091] In one embodiment, such as Figure 8As shown, the left and right side walls of the recess 321 cover the left and right side walls of the first box 31. Specifically, the left and right side walls of the recess 321 are the first side wall 323 and the second side wall 324. During the pulling motion of the first box 31, its side walls move relative to the first side wall 323 and the second side wall 324 respectively. In order to facilitate the pulling of the first box 31, a gap needs to be left between the side walls of the first box 31 and the left and right side walls of the recess 321. If the first side wall 323 and the second side wall 324 are designed to surround the sides of the first box 31, it will cause the left and right dimensions of the variable temperature drawer 301 to increase, resulting in a waste of refrigerator storage space. By designing the first side wall 323 and the second side wall 324 to be above the first box 31, the left and right dimensions of the first cover 32 can be controlled while the first box 31 is pulled out. Furthermore, in order to reduce the rate at which cold air escapes from the first box 31, the side arm of the first cover 32 near the refrigerator liner 50 surrounds the outer wall of the first box 31 near the refrigerator liner 50.

[0092] Furthermore, such as Figure 7 As shown, the lower end faces of the left and right side walls of the recess 321 extend along the contours of the upper end faces of the side walls of the first box 31, respectively, to balance the distance between different parts of the lower end faces of the left and right side walls of the recess 321 and the upper surfaces of the side walls of the first box 31, i.e., to control the assembly gap height to be consistent, thereby controlling the leakage of cold air. In one embodiment, the side walls of the first box 31 are partially or entirely inclined upwards in the direction toward the refrigerator door, and the lower end faces of the left and right side walls of the recess 321 are also inclined upwards. The upper end faces of the side walls of the first box 31 and the lower end faces of the left and right side walls of the recess 321 form a curved or bent passageway to increase the difficulty of airflow through the passageway and further reduce gas leakage.

[0093] In one embodiment, such as Figure 8 As shown, the left and right dimensions of the recess 321 are slightly smaller than the left and right dimensions of the storage cavity of the first box 31. Specifically, the peripheral contour of the recess 321 is slightly smaller than the peripheral contour of the storage cavity, which serves to guide airflow. When the cold air inside the first box 31 rises to the assembly gap between it and the first cover 32, the cold air encounters the inner surface of the recess 321 and changes its flow direction, flowing towards the center of the recess 321, thereby reducing the probability of the rising cold air inside the first box 31 flowing into the assembly gap.

[0094] Furthermore, such as Figure 7 , Figure 8As shown, the left and right side walls of the recess 321 extend away from the recess 321 to form extension edges. Specifically, tracks are provided on both sides of the first box 31 to slide and connect with the refrigerator liner 50 for easy pulling. The tracks of the conventional first box are located near the top of the first box 31 to provide stable support, thus the top walls on both sides of the conventional first box 31 have a certain width. The first side wall 323 and the second side wall 324 are designed to extend to form the first extension edge 3231 and the second extension edge 3241, respectively, to extend the width of the channel formed by the left and right side walls of the recess 321 and the left and right side walls of the first box 31, thereby reducing the speed at which cold air escapes from the first box 31.

[0095] In one embodiment, such as Figure 14 , Figure 16 As shown, the air duct assembly 20 includes several air outlets, wherein a first air outlet 211 is used to supply air to the variable temperature drawer 301; and a second air outlet 215 is used to supply air to the remaining storage areas of the storage compartment. Figure 10 , Figure 11 , Figure 12 , Figure 14 As shown, the refrigerator 100 includes an air guide nozzle 10, which has an air guide channel 11. One end of the air guide channel 11 is connected to the first air outlet 211 of the refrigerator's air duct assembly 20, and the other end extends towards the interior of the refrigerator and into the clearance opening 311 to form a separate cooling path for the variable temperature drawer 30. Specifically, by setting the air guide nozzle 10, the airflow at the first air outlet 211 is guided and concentrated into the variable temperature drawer 301, improving the air supply effect and thus increasing the temperature change speed of the variable temperature drawer 301. In addition, since the air duct assembly 20, the variable temperature drawer 301, and the fixing frame 90 are large in size and relatively complex in structure, if the air guide structure is directly formed on the air duct assembly 20, the variable temperature drawer 301, or the fixing frame 90, the processing mold of the air duct assembly 20, the variable temperature drawer 301, or the fixing frame 90 needs to be changed, resulting in increased costs; and after the structure of the air duct assembly 20, the variable temperature drawer 301, or the fixing frame 90 is modified, its applicability is reduced. The air guide nozzle 10 has a simple and compact structure, which replaces the solution of directly opening the air guide structure on the air duct assembly, temperature-controlled drawer or fixed frame. It improves the air delivery effect while reducing the structural modification of the air duct assembly, temperature-controlled drawer or fixed frame, thus reducing the cost of refrigerator modification.

[0096] In one embodiment, the air guide nozzle 10 is snapped onto the air duct assembly 20, making it easy to install and remove. Furthermore, the air duct assembly 20 can be matched with the air guide nozzle 10 simply by opening a first air outlet 211, thus simplifying the structural design of the air duct assembly 20.

[0097] Furthermore, such as Figure 10 , Figure 13As shown, the air guide nozzle 10 is provided with a plurality of clips 12; at least two clips 12 form opposing clipping forces to fasten the inner surface of the first air outlet 211 of the air duct assembly 20. Specifically, the air guide nozzle 10 has a compact structure and is simple to manufacture. The clips 12 are provided on the air guide nozzle 10 instead of being provided on the air duct assembly 20, reducing structural changes to the air duct assembly 20 and saving manufacturing costs. In a specific embodiment, because the air guide nozzle 10 has a compact structure, the number of clips 12 is three or four, with two clips 12 located on the same side and the remaining clips located on the opposite side, forming a stable clipping force.

[0098] Furthermore, such as Figure 10 , Figure 13 As shown, the air guide nozzle 10 is provided with several abutment portions 13 for abutting against the side wall of the first air outlet 211. Specifically, the air guide nozzle 10 is fastened to the first air outlet 211 by the cooperation of the buckles 12 and the abutment portions 13 with the contour of the first air outlet 211. The abutment portions 13 are provided to reduce the number of buckles 12, thereby reducing the force required to install and remove the air guide nozzle 10 from the contour of the first air outlet 211, making it easier to install and remove the air guide nozzle 10. In a specific embodiment, there are four buckles 12, arranged in pairs with the two pairs of buckles facing each other; there are two abutment portions 13, also facing each other. The four buckles 12 respectively lock onto the two opposite sides of the periphery contour of the first air outlet 211, and the two abutment portions 13 respectively abut against the other two opposite side walls of the first air outlet 211, thus achieving the fastening of the air guide nozzle 10.

[0099] In one embodiment, the air guide nozzle 10 is made of plastic, which is easy to process and saves costs. In addition, the plastic part has a certain degree of elasticity. When the air guide nozzle 10 is fastened with the buckle 12, the buckle 12 has a certain degree of elasticity, so as to facilitate fastening or disengaging from the outline of the first air outlet 211, thereby reducing the probability of damage to the buckle 12 during installation and removal.

[0100] In one embodiment, such as Figure 10 , Figure 13 As shown, the air guide nozzle 10 includes a cover plate 14 for covering the first air outlet 211 of the air duct assembly 20 to increase the sealing at the first air outlet 211. Furthermore, a buckle 12 and an abutment portion 13 are provided on the surface of the cover plate 14 facing the air duct assembly 20 for easy fastening.

[0101] Furthermore, the side of the cover plate 14 facing the air duct assembly 20 is recessed to form a recess 141; the recess 141 and the air duct assembly 20 together form a clamping area for clamping the sealing ring 40. Specifically, since the air guide nozzle 10 is a plastic part and the air duct assembly 20 is a plastic or metal part, the sealing performance when the cover plate 14 of the air guide nozzle 10 covers the surface of the air duct assembly 20 is difficult to control, and the assembly precision requirement is high. By setting the recess 141, a sealing ring 40 is set in the clamping area formed by the recess 141 and the surface of the air duct assembly 20 to improve the sealing at the assembly point of the cover plate 14 and the air duct assembly 20, preventing air leakage from the assembly point and affecting the air delivery effect. Furthermore, the sealing ring 40 includes, but is not limited to, a rubber ring, sponge, or sound-absorbing cotton. When the sealing ring 40 is sound-absorbing cotton, the flexibility of the sound-absorbing cotton provides sealing performance, and the sound absorption performance is used to absorb airflow noise at the first air outlet 211, reducing noise pollution inside the refrigerator.

[0102] In one embodiment, such as Figure 10 , Figure 13 As shown, the air guide nozzle 10 includes an air guide extension end 15 for extending into the temperature-controlled drawer 301. The opening profile of the air guide extension end 15 has a bent or curved structure from top to bottom towards the air duct assembly 20 to diffuse air downwards and improve the air delivery effect. Specifically, the opening profile of the air guide extension end 15 includes a first end face 151 and a second end face 152 from top to bottom. The first end face 151 extends beyond the second end face 152 along the air inlet direction to form a tendency for air to exit towards the bottom of the temperature-controlled drawer, allowing the air to diffuse downwards and facilitate the settling of cold air for uniform temperature control.

[0103] In one embodiment, such as Figure 1 As shown, the variable temperature drawer 301 is located near the bottom of the air duct assembly 20, that is, the first air outlet 211 is located near the bottom of the air duct assembly 20. Cold air flows upward from the bottom of the air duct assembly 20, shortening the distance between the first air outlet 211 and the source of the cooling air, increasing the cooling speed, and thus increasing the temperature change speed.

[0104] In one embodiment, such as Figure 5 , Figure 6 As shown, the fixed bracket 90 is slidably connected to the refrigerator liner. The back plate 94 of the fixed bracket 90 is equipped with a temperature sensor 60 to obtain the temperature status inside the variable temperature drawer 301, so as to adjust the air volume at the first air outlet 211 in a timely manner according to the obtained temperature information.

[0105] In yet another embodiment, such as Figure 1As shown, a temperature sensor 60 is installed at the location corresponding to the position of the air duct assembly 20 and the variable temperature drawer 301. The temperature sensor 60 is used to obtain the temperature condition inside the variable temperature drawer 301, so as to adjust the air volume at the first air outlet 211 in a timely manner based on the obtained temperature information, thereby adjusting the storage temperature inside the variable temperature drawer 301. The variable temperature drawer 301 has a clearance opening 311 to allow the air guide nozzle 10 to extend into the variable temperature drawer 301. Since the variable temperature drawer 301 needs to be pulled out during use, the outline of the air guide nozzle 10 does not contact the outline of the clearance opening 311 to avoid the variable temperature drawer 301 scraping against the air guide nozzle 10 during the movement. As a result, some of the cold air delivered by the air guide nozzle 10 will overflow from the gap between the air guide nozzle 10 and the clearance opening 311, overflowing into the channel between the outer surface of the variable temperature drawer 301 and the air duct cover 21, and then contacting the temperature sensor 60. The temperature information inside the variable temperature drawer 301 is obtained by evaluating the temperature correlation of the temperature sensor 60. Furthermore, the temperature sensor 60 is mounted on the air duct assembly 20, facilitating electrical connection between the temperature sensor 60 and the control board and power supply inside the refrigerator, thus simplifying wiring arrangements. This replaces the option of directly mounting the temperature sensor 60 in the variable temperature drawer 301, preventing the drawer 301 from pulling or dragging the wiring harness of the temperature sensor 60 during operation.

[0106] In one embodiment, such as Figure 1 , Figure 12 , Figure 13 , Figure 14 As shown, the air duct assembly 20 includes an air duct cover 21 and an air duct plate 22. The air duct cover 21 is installed on the front of the air duct plate 22, and the air duct plate 22 is used to transport circulating cooling air. A first air outlet 211 is provided on the air duct cover 21, and the first air outlet 211 is used to detachably install the air guide nozzle 10. The cooling air in the air duct passes through the first air outlet 211 and is then guided into the temperature-controlled drawer 301 through the air guide nozzle 10. The first air outlet 211 is provided on the air duct cover 21 for installing the air guide nozzle 10. The air guide nozzle 10 extends into the temperature-controlled drawer 301, and the air is guided into the temperature-controlled drawer 301 through the air guide nozzle 10 to improve the air supply effect. The air duct cover 21 has a simple structure and a certain structural strength. The first air outlet 211 forms an air duct outlet, and the outline of the first air outlet 211 can be used to install the air guide nozzle 10. The structure of the air duct cover 21 requires little modification, reducing processing costs.

[0107] In one embodiment, such as Figure 12 , Figure 17 As shown, the back of the air duct plate 22 is provided with several air supply ducts. The first air supply duct 221 is connected to the first air outlet 211 and is used to provide cold air to the temperature-controlled drawer 301. The second air supply duct 222 is used to provide cold air to the rest of the storage room.

[0108] In one embodiment, the air guide nozzle 10 is fastened to the first air outlet 211 from the side of the air duct cover 21 facing away from the air duct plate 22.

[0109] In one embodiment, such as Figure 15 As shown, the duct cover 21 has a first mounting part 212 near the first air outlet 211 for mounting the temperature sensor 60, which is easy to install. Variable temperature drawer 301

[0110] In one embodiment, the first mounting portion 212 includes, but is not limited to, a slot, mounting hole, or snap fastener for quick mounting or dismounting of the temperature sensor 60.

[0111] Furthermore, the first air outlet 211 is located above the first mounting portion 212. Specifically, due to thermal expansion and contraction, the lower the temperature of the air, the greater its density. The cold air overflowing from the gap between the air guide nozzle 10 and the clearance opening 311 runs downwards, making it easier for the temperature sensor 60 to detect.

[0112] In one embodiment, such as Figure 14 , Figure 15 As shown, the first air outlet 211 is located near the top of the temperature-controlled drawer 301 to deliver air from the top of the temperature-controlled drawer 301, so as to avoid the air delivery being blocked by the items stored inside the temperature-controlled drawer 301 and thus affecting the air delivery effect.

[0113] In one embodiment, such as Figure 17 As shown, the duct cover 21 has a plate-like structure with a receiving groove 213 on its back side for partially wrapping the duct plate 22. Specifically, by opening the receiving groove 213 on the back side of the duct cover 21, the movement of the duct plate 22 is restricted, avoiding the need for assembly structures on the duct plate 22 and simplifying the structural design of the duct plate 22.

[0114] In one embodiment, such as Figure 17 As shown, a plurality of abutment plates 216 are protruding from the back of the duct cover 21 near its peripheral edge, and the plurality of abutment plates 216 together with the back of the duct cover 21 form a receiving groove 213. The back of the duct cover 21 abuts against the front contour of the duct plate 22, and the plurality of abutment plates 216 abut against the peripheral side of the duct plate 22 respectively.

[0115] Furthermore, several abutment plates 216 are respectively positioned opposite the top and side walls of the air duct plate 22 to restrict the left-right or upward movement of the air duct plate 22. The refrigerator 100 is provided with connecting pipes, both ends of which are connected to the refrigeration unit and the air duct assembly 20, respectively, and the bottom of the air duct plate 22 is fixed to the connecting pipes.

[0116] Furthermore, the surface of the abutment plate 216 facing the duct plate 22 is provided with a plurality of abutment ribs 2161 for abutting against the side wall of the duct plate 22. The point-to-surface contact between the abutment ribs 2161 and the surface of the duct plate 22 is provided instead of the surface-to-surface contact between the inner surface of the abutment plate 216 and the surface of the duct plate 22, which provides a more stable abutment while reducing the requirements for the machining accuracy of the two surfaces due to the surface-to-surface contact.

[0117] In one embodiment, the duct cover 21 is snapped onto the refrigerator liner 50 to install the duct assembly 20 onto the refrigerator liner 50. Specifically, the duct assembly 20 is installed through the connection between the duct cover 21 and the refrigerator liner 50. The duct cover 21 has a plate-like structure, which is simple in structure. The processing steps for creating the assembly structure with the refrigerator liner 50 are simple and the processing cost is low, thus replacing the solution of creating an assembly structure on the duct plate 22. In addition, the duct cover 21 is snapped onto the refrigerator liner 50, which is detachable, easy to assemble, and the snap-fit ​​structure is simple.

[0118] Furthermore, such as Figure 17 As shown, the air duct cover 21 is provided with several first snap-fit ​​structures 214 for fastening onto the refrigerator liner 50. By providing the first snap-fit ​​structures on the air duct cover 21 instead of directly on the refrigerator liner 50, the structural modifications to the refrigerator liner 50 are reduced, lowering modification costs and avoiding impact on the refrigerator liner 50's versatility. Specifically, the refrigerator liner 50 is provided with several matching slots, and the several first snap-fit ​​structures 214 are respectively fastened into these slots to achieve fastening.

[0119] Furthermore, the first snap-fit ​​structure 214 is disposed at one end of the abutment plate 216 near the air duct plate 22, and the abutment plate 216 and the first snap-fit ​​structure 214 are centrally disposed, reducing the space occupied by the abutment plate 216 and the first snap-fit ​​structure 214, which is conducive to the miniaturization design of the air duct cover plate 21.

[0120] In one embodiment, such as Figure 14 , Figure 16 As shown, a second air outlet 215 is provided at the location of the air duct cover 21 corresponding to the refrigerator storage compartment; a second mounting part 2151 is provided at the second air outlet 215 for mounting the filter element structure 70. Specifically, the second air outlet 215 provides most of the cooling component of the refrigerator storage compartment. By installing the filter element structure 70 at the second air outlet 215, the air supplied by the second air outlet 215 is purified and / or filtered to improve the cleanliness of the circulating air in the storage compartment area and extend the shelf life of the items. The second mounting part 2151 is provided on the air duct cover 21. Since the air duct cover 21 has a simple structure, the processing steps for creating the second mounting part 2151 are simple and the processing cost is low.

[0121] Furthermore, the air duct cover 21 is recessed inward on the surface of the refrigerator door to form a groove 217, a second air outlet 215 is disposed in the groove 217, a second mounting part 2151 is disposed in the groove 217, and the filter structure 70 is partially embedded in the groove 217 to reduce the extent of the filter structure 70 protruding from the surface of the air duct cover 21, reduce the abruptness, and improve the user experience.

[0122] Furthermore, the second mounting part 2151 includes several second snap-fit ​​structures for fastening the filter element structure 70, which is easy to assemble and detach, facilitating replacement or maintenance.

[0123] In one embodiment, such as Figure 14 , Figure 17 As shown, the air duct assembly 20 also includes:

[0124] Decorative panel 23 is used to cover the front outline of air duct cover 21;

[0125] The back panel 24 is used to close the opening of the air duct of the air duct plate 22. Specifically, the decorative panel 23 is used to cover the air duct cover 21, and the design of the decorative panel 23's structural outline or color is used to match the visual effect of the inner surface of the refrigerator liner 50. The air duct of the air duct plate 22 has an opening on the side opposite to the air duct cover 21, that is, the air duct has a groove structure, which is convenient for processing and shaping. By closing the air duct with the back panel 24, the structural design of the air duct plate 22 is simplified, and costs are controlled.

[0126] In one embodiment, the decorative panel 23 covers the front outline of the portion of the air duct cover 21 located above the temperature-controlled drawer 301. Furthermore, the decorative panel 23 has a notch 231 to expose a second air outlet 215 for mounting the filter structure 70.

[0127] In one embodiment, such as Figure 14 As shown, the surface of the air duct plate 22 facing the air duct cover plate 21 is provided with a wire-passing groove 223 for threading the wire harness inside the air duct assembly 20.

[0128] Furthermore, such as Figure 17 As shown, the surface of the air duct cover 21 facing the air duct plate 22 is provided with a guide groove 218. The guide groove 218 and the wire threading groove 223 together form a space to accommodate the wire harness, so as to restrict the direction of the wire harness.

[0129] In one embodiment, such as Figure 14 As shown, the portion of the air duct plate 22 corresponding to the position of the first mounting portion 212 is recessed to form a clearance groove 224, which is used to accommodate the protruding portion on the back of the first mounting portion 212.

[0130] In one embodiment, the air duct plate 22 is a foam component, which has good thermal insulation properties.

[0131] In one embodiment, such as Figure 1 , Figure 2 As shown, the humidifying drawer 302 includes a second box body 33 and a second cover body 34. To reduce the processing cost of the humidifying drawer 302, a humidifying structure 303 is provided on the second cover body 34. Specifically, the humidifying structure 303 includes a clamping structure and a humidifying film. The humidifying film is clamped within the clamping structure, and the clamping structure is peripherally fastened to the hollow area 341 of the second cover body 34. Further, the humidifying film is a sponge layer or a silica filter membrane, which has good water absorption and storage functions. When the ambient air humidity around the humidifying film is high, the humidifying film absorbs moisture from the surrounding environment; when the surrounding environment is dry and the humidity is less than the moisture content of the humidifying film itself, the humidifying film releases moisture into the surrounding environment to achieve the humidity regulation function.

[0132] Furthermore, the variable temperature drawer 301 is equipped with a humidification structure to regulate its internal humidity. To reduce costs, the first cover 32 of the variable temperature drawer 301 has the same structure as the second cover 34 of the humidification drawer 302.

[0133] In one embodiment, a return air hood 52 is provided at the return air vent 51 of the refrigerator compartment 50 to prevent debris from the storage space from entering the air duct assembly 20.

[0134] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Those skilled in the art can readily implement the present invention based on the accompanying drawings and the description above. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the present invention, utilizing the disclosed technical content, are equivalent embodiments of the present invention. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the present invention.

Claims

1. A refrigerator, comprising a cabinet, characterized in that, The refrigerator's storage compartment is equipped with at least two drawers for storage; wherein, The outer wall of the drawer is provided with a clearance opening, which is connected to at least one air outlet of the air duct assembly of the refrigerator to form a variable temperature drawer. The outer wall of the other drawer, together with the outer wall of the air duct assembly and the inner wall of the refrigerator, forms the return air area of ​​the refrigerator's return air vent; The air duct assembly has at least two independent air outlets to create different temperatures inside and outside the variable temperature drawer of the refrigerator. The refrigerator is equipped with a fixed frame, and the variable temperature drawer and another drawer are respectively slidably disposed within the two frame areas of the fixed frame; The mounting bracket is fixed inside the refrigerator compartment; The fixing frame includes: Shelves, with their sides connected to the refrigerator liner; A bracket is fixed below the shelf to divide the area below the shelf into two frame areas; a slide rail is provided on each of the left and right sides of the bracket to slide on one side wall of each drawer; the bottom end of the bracket is inserted into the refrigerator liner. The refrigerator includes an air guide nozzle with an air guide channel; one end of the air guide channel is connected to the first air outlet of the air duct assembly, the first air outlet is used to supply air to the variable temperature drawer; the second air outlet is used to supply air to the remaining storage areas of the storage compartment; the other end extends into the clearance opening to form a separate cooling path for the variable temperature drawer; the air guide nozzle is fastened to the air duct assembly. Temperature sensors are installed at the locations of the air duct assembly and the variable temperature drawer.

2. A refrigerator according to claim 1, characterized in that, The variable temperature drawer is located below the shelf of the refrigerator; the outer wall of the air duct assembly forms an isolation structure with the variable temperature drawer and the shelf to prevent the airflow in the variable temperature drawer from flowing to the return air area.

3. A refrigerator according to claim 1, characterized in that, At least one of the drawers is provided with a moisture-retaining structure to regulate the humidity environment inside the drawer, thereby forming a moisture-retaining drawer.

4. A refrigerator according to claim 1, characterized in that, The variable temperature drawer has at least one drawer on one side.

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