Refrigerator

Abstract

The utility model relates to a refrigerator. The refrigerator comprises a refrigerator body and a refrigerator cover, a refrigerator liner; an evaporation bin is formed between the air duct assembly and the inner wall of the refrigerator container; a reserved air groove is formed in the inner wall in the refrigerator container in a concave mode and communicates with the evaporation bin. The evaporator is arranged opposite to the reserved air groove; the baffle is arranged at the communicating position of the reserved air groove and the evaporation bin; when the evaporator is not blocked by frost, the baffle can close the communicating position of the reserved air groove and the evaporation bin so that the reserved air groove can be isolated from the evaporation bin, the air flowing space in the evaporation bin can be reduced, the refrigeration effect of the refrigerator can be improved, energy can be saved, and the power consumption of the refrigerator can be reduced; when the evaporator is blocked by frost, the baffle can open the communication position of the reserved air groove and the evaporation bin, so that the reserved air groove is communicated with the evaporation bin, the air flowing space in the evaporation bin is increased, air in the evaporation bin can flow through the reserved air groove, smooth flowing of the air in the evaporation bin is guaranteed, and the good refrigeration effect of the refrigerator is maintained. Therefore, the frost blockage problem of the refrigerator is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration equipment, in particular to a refrigerator. Background Art

[0002] A refrigerator is a container that uses the phase change of a refrigerant to create a low-temperature environment for storing food. It is one of the indispensable household appliances for people's home life. As people's living standards improve, the requirements for refrigerators are getting higher and higher.

[0003] In the related air-cooled refrigerator, the refrigerator generally includes a box body and a box liner arranged in the box body, and a storage chamber is formed in the box liner. An air duct assembly is arranged on the back side of the storage chamber, and cold air can be transported to the storage chamber for refrigeration through the air supply duct in the air duct assembly.

[0004] At present, in existing air-cooled refrigerators, the evaporator and evaporation chamber are usually arranged inside the box and on the back side of the air duct assembly. The evaporator is usually close to the rear wall of the inner box. When the evaporator is working, the cold air formed in the evaporation chamber can be transported into the storage room through the air supply duct for refrigeration, and then the air in the storage room is returned to the evaporation chamber to form a refrigeration air cycle. However, when the evaporator fins are blocked by frost, the air flow efficiency around the evaporator is poor, resulting in a low efficiency of the refrigeration air circulation flow, resulting in low refrigeration efficiency. Utility Model Content

[0005] The utility model aims to provide a refrigerator to improve the frost blockage problem of the refrigerator and maintain a good refrigeration effect of the refrigerator when the evaporator is blocked by frost.

[0006] The utility model also aims to provide a refrigerator to save energy and reduce the power consumption of the refrigerator.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] According to one aspect of the utility model, the utility model provides a refrigerator, which comprises: a box body, which forms an outer shell of the refrigerator; a box liner, which is arranged in the box body, and a storage chamber is formed in the box liner; an air duct assembly, which is arranged in the box liner; an evaporation bin is formed between the air duct assembly and the inner wall of the box liner; a reserved air slot is recessed on the inner wall of the box liner, and the reserved air slot is connected to the evaporation bin; an evaporator, which is arranged in the evaporation bin, and the evaporator is arranged opposite to the reserved air slot; a baffle, which is movably arranged on the inner wall of the box liner and is arranged at the connection between the reserved air slot and the evaporation bin; wherein the baffle can close the connection between the reserved air slot and the evaporation bin to isolate the reserved air slot from the evaporation bin; the baffle can open the connection between the reserved air slot and the evaporation bin to connect the reserved air slot to the evaporation bin.

[0009] In some embodiments of the present application, the air duct assembly is arranged on the back side of the storage chamber, and the evaporation bin is formed between the back side of the air duct assembly and the rear wall inside the box; the reserved air groove is recessed on the rear wall inside the box, and the reserved air groove is located on the back side of the evaporation bin and the evaporator.

[0010] In some embodiments of the present application, the refrigerator includes a driving unit, which is connected to the baffle; the driving unit can drive the baffle to move at the connection between the reserved air duct and the evaporation bin to open or close the connection between the reserved air duct and the evaporation bin.

[0011] In some embodiments of the present application, a receiving groove is recessed on the rear wall inside the box, and the receiving groove is arranged on one side of the reserved air groove; the driving unit is arranged in the receiving groove.

[0012] In some embodiments of the present application, the refrigerator includes a main control board, which is signal-connected to the drive unit; the main control board can control the operation of the drive unit so that the drive unit can drive the baffle to open or close the connection between the reserved air slot and the evaporation bin.

[0013] In some embodiments of the present application, a first temperature sensor is provided in the storage chamber, and the first temperature sensor is used to detect the temperature in the storage chamber; a second temperature sensor is provided on the evaporator, and the second temperature sensor is used to detect the temperature of the evaporator; the first temperature sensor and the second temperature sensor are respectively connected to the main control board signal; the main control board can control the driving unit to drive the baffle to open or close the connection between the reserved air duct and the evaporation bin according to the temperature difference detected by the first temperature sensor and the second temperature sensor.

[0014] In some embodiments of the present application, the refrigerator includes a defrost unit, which is disposed in the evaporation bin and on the evaporator; the defrost unit is used to heat and defrost the evaporator.

[0015] In some embodiments of the present application, the refrigerator includes a compressor and a timing unit, and the compressor is connected to the main control board signal; the timing unit is respectively connected to the compressor and the main control board signal, and the timing unit is used to detect the continuous working time of the compressor; the main control board can control the operation of the compressor and the defrost unit according to the temperature difference detected by the first temperature sensor and the second temperature sensor and the continuous working time detected by the timing unit.

[0016] In some embodiments of the present application, an air supply duct is provided in the air duct assembly, and the air supply duct is connected to the air outlet end of the evaporation bin; an air supply port is provided on the front wall of the air duct assembly, and the air supply port is connected to the air supply duct and the storage chamber; a return air port is provided on the air duct assembly, and the return air port is connected to the return air end of the evaporation bin and the storage chamber.

[0017] In some embodiments of the present application, a first guide wall is provided on the side wall of the reserved air duct close to the return air end of the evaporation bin, and the first guide wall is spaced apart from the evaporator; a second guide wall is provided on the side wall of the reserved air duct close to the air outlet end of the evaporation bin, and the second guide wall is spaced apart from the evaporator.

[0018] In some embodiments of the present application, the air outlet end of the evaporation bin is located above the top of the evaporator, and the return air end of the evaporation bin is located below the bottom of the evaporator; the first guide wall is arranged on the bottom side wall of the reserved air slot, and the first guide wall is arranged to extend upward and tilted toward the upper rear side; the second guide wall is arranged on the top side wall of the reserved air slot, and the second guide wall is arranged to extend downward and tilted toward the lower rear side.

[0019] The embodiments of the present invention have the following advantages and positive effects:

[0020] In the refrigerator of the embodiment of the utility model, an air duct assembly is provided in the box, an evaporation bin is provided between the air duct assembly and the inner wall of the box, and the evaporator is provided in the evaporation bin; a reserved air slot connected to the evaporation bin is provided on the inner wall of the box, and the evaporator is arranged opposite to the reserved air slot. A baffle is provided at the connection between the reserved air slot and the evaporation bin. When the evaporator is blocked by frost, the baffle can be used to open the connection between the reserved air slot and the evaporation bin, so that the reserved air slot is connected to the evaporation bin, the air flow space in the evaporation bin is increased, and the air in the evaporation bin can flow through the reserved air slot, ensuring the smooth flow of air in the evaporation bin, maintaining a good refrigeration effect of the refrigerator, thereby improving the frost blockage problem of the refrigerator; when the evaporator is not blocked by frost, the baffle can be used to close the connection between the reserved air slot and the evaporation bin, so that the reserved air slot is isolated from the evaporation bin, reducing the air flow space in the evaporation bin, improving the refrigeration effect of the refrigerator, saving energy, and reducing the power consumption of the refrigerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a refrigerator according to an embodiment of the utility model.

[0022] Figure 2 yes Figure 1 Schematic diagram of the internal structure.

[0023] Figure 3 yes Figure 2 Schematic diagram of part of the structure.

[0024] Figure 4 yes Figure 3 Schematic diagram of the structure from another perspective.

[0025] Figure 5 yes Figure 4 Schematic diagram of the structure of the first box.

[0026] Figure 6 yes Figure 5 Schematic diagram of the structure from another perspective.

[0027] Figure 7 yes Figure 6 Front view of .

[0028] Figure 8 yes Figure 6 A schematic diagram of the decomposed structure.

[0029] Fig. 9 yes Figure 7 AA section view.

[0030] Fig.10 yes Figure 7 Middle BB section view.

[0031] Fig.11 yes Fig.10 Schematic diagram of the structure in another state.

[0032] Fig.12 yes Figure 8 Schematic diagram of part of the structure.

[0033] Fig.13 yes Fig.12 Front view of .

[0034] Fig.14 yes Fig.13 Schematic diagram of the structure in another state.

[0035] The reference numerals in the accompanying drawings are as follows: 1. box body; 101. compressor; 102. evaporator; 11. first box door; 12. second box door; 13. compressor compartment; 14. air duct pipe; 2. first box liner; 20. first storage chamber; 21. evaporation chamber; 22. reserved air slot; 221. first guide wall; 222. second guide wall; 23. accommodating groove; 3. second box liner; 30. second storage chamber; 31. second return air outlet; 4. first air duct assembly; 41. first air supply outlet; 42. first return air outlet; 43. fan; 5. second air duct assembly; 51. second air supply outlet; 6. baffle; 7. drive unit. DETAILED DESCRIPTION

[0036] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially for illustrative purposes rather than for limiting the present invention.

[0037] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0039] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] At present, in existing air-cooled refrigerators, the evaporator and evaporation chamber are usually arranged inside the box and on the back side of the air duct assembly. The evaporator is usually close to the rear wall of the inner box. When the evaporator is working, the cold air formed in the evaporation chamber can be transported into the storage room through the air supply duct for refrigeration, and then the air in the storage room is returned to the evaporation chamber to form a refrigeration air cycle. However, when the evaporator fins are blocked by frost, the air flow efficiency around the evaporator is poor, resulting in a low efficiency of the refrigeration air circulation flow, resulting in low refrigeration efficiency.

[0041] For the convenience of description, unless otherwise specified, the directions of up, down, left, right, front and back in this article are all based on the state of the refrigerator when it is in use, with the refrigerator door being the front and the opposite direction being the back, the vertical direction being the up and down direction, and the horizontal direction being the left and right direction.

[0042] Figure 1 It is a structural schematic diagram of a refrigerator according to an embodiment of the utility model. Figure 2 yes Figure 1 Schematic diagram of the internal structure.

[0043] See also Figure 1 to Figure 2 As shown, the refrigerator provided in the embodiment of the utility model may include a box body 1. The box body 1 may adopt a hollow structure of a rectangular parallelepiped. It is understandable that in other embodiments, the box body 1 may also adopt a hollow shell structure of other shapes.

[0044] In some embodiments, a storage room may be formed in the box body 1. The storage room may be used as an independent storage space, and may be used as a refrigerator, a freezer, etc., to meet different storage requirements such as refrigeration and freezing according to different types of stored items.

[0045] In some embodiments, a plurality of storage chambers may be provided in the box body 1. The plurality of storage chambers may be arranged in the box body 1 in an up-down partition or a left-right partition.

[0046] See also Figure 1 to Figure 2 As shown, in some embodiments, a door may be provided on the front side of the cabinet 1. The door may be used to open and close the storage compartment. The door may be connected to the cabinet 1 by a hinge, so that the door of the refrigerator may rotate around the axis of the hinge to open and close the door of the refrigerator, thereby opening and closing the corresponding storage compartment.

[0047] In some embodiments, multiple doors may be provided. Multiple doors may be provided in one-to-one correspondence with multiple storage rooms. It should be noted that, in other embodiments, multiple doors may also open and close a storage room at the same time.

[0048] Figure 3 yes Figure 2 Schematic diagram of part of the structure. Figure 4 yes Figure 3 Schematic diagram of the structure from another perspective.

[0049] See also Figures 1 to 4 As shown, in some embodiments, a box liner may be provided in the box body 1. A storage room may be formed in the box liner. Multiple box liner may be provided in the box body 1. Multiple box liner may be arranged in the box body 1 in an upper and lower partition or a left and right partition. One or more storage rooms may be formed in each box liner.

[0050] In some embodiments, two box bladders may be provided in the box body 1, and the two box bladders may be a first box bladder 2 and a second box bladder 3, respectively. The first box bladder 2 and the second box bladder 3 may be arranged adjacent to each other up and down. A first storage room 20 may be formed in the first box bladder 2, and the first storage room 20 may be a freezer. A second storage room 30 may be formed in the second box bladder 3, and the second storage room 30 may be a refrigerator. The second box bladder 3 may be arranged on the upper side of the first box bladder 2. The second storage room 30 may be arranged above the top of the first storage room 20 at intervals.

[0051] It should be noted that, in some other embodiments, the first storage chamber 20 in the first box 2 may also form other types of storage chambers. The second storage chamber 30 in the second box 3 may also form other types of storage chambers.

[0052] See also Figures 1 to 4 As shown, in some embodiments, the door may include a first door 11 and a second door 12. The first door 11 and the second door 12 may be respectively arranged at the front side of the box body 1. The first door 11 may be arranged corresponding to the first box 2. The second door 12 may be arranged corresponding to the second box 3. The first door 11 may be used to open and close the first box 2 and the first storage chamber 20. The second door 12 may be used to open and close the second box 3 and the second storage chamber 30.

[0053] See also Figures 2 to 4 As shown, in some embodiments, a refrigeration system may be provided in the cabinet 1. The refrigeration system may be provided inside the cabinet 1. The refrigeration system may be used to provide cold air inside the refrigerator to maintain a low temperature environment in each storage chamber.

[0054] In some embodiments, the refrigeration system may include a compressor 101. The compressor 101 may compress the refrigerant into high-temperature and high-pressure refrigerant vapor.

[0055] In some embodiments, the refrigeration system may include a condenser (not shown). The compressor 101 may deliver the compressed refrigerant to the condenser. The condenser may condense high-temperature and high-pressure refrigerant vapor.

[0056] In some embodiments, the refrigeration system may include a throttling device (not shown). The condenser may deliver the condensed refrigerant to the throttling device. The throttling device may be a capillary tube. The throttling device may be used to throttle and reduce the pressure of the refrigerant.

[0057] In some embodiments, the refrigeration system may include an evaporator 102. The throttling device may deliver the throttled and depressurized refrigerant to the evaporator 102. The evaporator 102 may be used to evaporate and boil the refrigerant vapor so as to absorb heat from the surrounding medium.

[0058] In some embodiments, the compressor 101 , the condenser, the throttling device, and the evaporator 102 may be sequentially connected to form a refrigeration circuit. The refrigerant may circulate in the refrigeration circuit to achieve refrigeration of the interior of the box 1 .

[0059] See also Figures 2 to 4 As shown, in some embodiments, a press chamber 13 may be provided in the box body 1. The press chamber 13 may be provided in the bottom area of ​​the box body 1. The press chamber 13 may be located at the rear lower side of the storage chamber. The compressor 101, the condenser, the throttling device, etc. may be provided in the press chamber 13.

[0060] It should be noted that, in some other embodiments, the press chamber 13 may also be disposed at other positions such as the top or side of the box body 1 .

[0061] Figure 5 yes Figure 4 Schematic diagram of the structure of the first box. Figure 6 yes Figure 5 Schematic diagram of the structure from another perspective. Figure 7 yes Figure 6 Front view of . Figure 8 yes Figure 6 A schematic diagram of the decomposed structure. Fig. 9 yes Figure 7 AA section view.

[0062] See also Figures 2 to 9 As shown, in some embodiments, an evaporation bin 21 may be provided in the housing 1. An evaporator 102 may be provided in the evaporation bin 21. The evaporator 102 may be used to absorb heat in the evaporation bin 21, so that a large amount of cold air is formed in the evaporation bin 21. The cold air is transported to the storage room, and a low-temperature storage function in the storage room can be realized.

[0063] In some embodiments, the evaporator 102 may include an evaporation tube (not shown) and an evaporation fin (not shown). The refrigerant may flow in the evaporation tube. A plurality of evaporation fins may be provided. The plurality of evaporation fins may be arranged in parallel and spaced apart. The evaporation tube may be inserted into the plurality of evaporation fins. The air in the evaporation chamber 21 may flow through the gaps between the evaporation fins.

[0064] See also Figures 3 to 9As shown, in some embodiments, a first air duct assembly 4 may be provided in the box body 1. The first air duct assembly 4 may be provided in the first box 2. The first air duct assembly 4 may be provided on the back side of the first storage chamber 20. The first storage chamber 20 may be formed on the front side of the first air duct assembly 4. The evaporation chamber 21 may be formed between the back side of the first air duct assembly 4 and the rear wall in the first box 2. A first air supply duct (not shown in the figure) may be formed in the first air duct assembly 4. The first air supply duct may connect the evaporation chamber 21 and the first storage chamber 20, and deliver cold air to the first storage chamber 20, thereby realizing the low-temperature storage function in the first storage chamber 20.

[0065] It should be noted that, in other embodiments, the first air duct assembly 4 may also be disposed on other side walls in the first tank 2. Accordingly, the evaporation chamber 21 may be formed between the first air duct assembly 4 and other inner walls in the first tank 2.

[0066] See also Figures 6 to 9 As shown, in some embodiments, a first air supply port 41 may be provided on the front wall of the first air duct assembly 4. The first air supply port 41 may connect the first air supply duct in the first air duct assembly 4 and the storage chamber in front of the first air duct assembly 4, that is, the first air supply port 41 may connect the first air supply duct and the first storage chamber 20. The cold air in the evaporation bin 21 may be transported to the first storage chamber 20 through the first air supply duct and the first air supply port 41, so as to realize cooling in the first storage chamber 20.

[0067] In some embodiments, a plurality of first air supply ports 41 may be provided on the front wall of the first air duct assembly 4. The plurality of first air supply ports 41 are arranged at intervals on the front wall of the first air duct assembly 4. The cold air in the first air supply duct can be transported into the first storage chamber 20 through the plurality of first air supply ports 41, thereby improving the refrigeration efficiency and refrigeration uniformity of the first storage chamber 20. It should be noted that the number of the first air supply ports 41 can be adjusted as needed, and is not limited here.

[0068] See also Figures 6 to 9 As shown, in some embodiments, the first air duct assembly 4 may be provided with a first return air port 42. The first return air port 42 may connect the evaporation bin 21 on the back side of the first air duct assembly 4 and the storage chamber on the front side of the first air duct assembly 4, that is, the first return air port 42 may connect the evaporation bin 21 and the first storage chamber 20. The air in the first storage chamber 20 may return to the evaporation bin 21 through the first return air port 42, be cooled again by the evaporator 102, and then be transported into the first storage chamber 20 through the first air supply duct and the first air supply port 41, forming a refrigeration air cycle.

[0069] In some embodiments, one end of the evaporation bin 21 connected to the return air port may be the return air end of the evaporation bin 21. One end of the evaporation bin 21 connected to the first air supply duct may be the outlet air end of the evaporation bin 21. The outlet air end of the evaporation bin 21 and the return air end of the evaporation bin 21 may be arranged at opposite ends of the evaporation bin 21.

[0070] In some embodiments, the first return air port 42 may be disposed at the bottom end of the first air duct assembly 4. The first return air port 42 may be connected to the bottom area of ​​the evaporation bin 21. The return air end of the evaporation bin 21 may be arranged at the bottom area of ​​the evaporation bin 21. The air outlet end of the evaporation bin 21 may be arranged at the top area of ​​the evaporation bin 21. The air outlet end of the evaporation bin 21 and the return air end of the evaporation bin 21 may be arranged at the upper and lower sides of the evaporator 102, respectively.

[0071] In some embodiments, the first return air port 42 may be formed between the bottom end of the first air duct assembly 4 and the rear wall of the first box 2 .

[0072] See also Fig. 9 As shown, in some embodiments, a fan 43 may be provided in the first air duct assembly 4. The fan 43 may be provided in the first air supply duct. The fan 43 may be provided at one end of the first air supply duct connected to the evaporation bin 21. The fan 43 may be used to draw cold air from the air outlet end of the evaporation bin 21 into the first air supply duct, and then transport the cold air into the first storage chamber 20 through the first air supply port 41.

[0073] See also Figures 2 to 4 As shown, in some embodiments, a second air duct assembly 5 may be provided in the box body 1. The second air duct assembly 5 may be provided in the second box 3. The second air duct assembly 5 may be provided on the back side of the second storage chamber 30. The second storage chamber 30 may be formed on the front side of the second air duct assembly 5. A second air supply duct (not shown in the figure) may be formed in the second air duct assembly 5. The second air supply duct may connect the evaporation bin 21 and the second storage chamber 30, and deliver cold air to the second storage chamber 30, thereby realizing the low-temperature storage function in the second storage chamber 30.

[0074] It should be noted that, in some embodiments, the evaporation chamber 21 may also be formed between the back side of the second air duct assembly 5 and the rear wall inside the second box 3 .

[0075] See also Figure 3 and Figure 4As shown, in some embodiments, an air duct 14 may be provided between the first box 2 and the second box 3. The first end of the air duct 14 may be connected to the first box 2. The first end of the air duct 14 may be connected to the evaporation chamber 21 in the first box 2. The second end of the air duct 14 may be connected to the second box 3. The second end of the air duct 14 may be connected to the second air supply duct in the second air duct assembly 5. Therefore, the cold air in the evaporation chamber 21 may enter the second air supply duct, and then the cold air may be transported to the second storage chamber 30 through the second air supply duct.

[0076] In some embodiments, the first end of the air duct pipe 14 can be connected to the first air supply duct in the first air duct assembly 4, so that the first end of the air duct pipe 14 can be connected to the evaporation bin 21 in the first box 2 through the first air supply duct.

[0077] In some embodiments, a damper (not shown) may be provided at the connection between the second end of the air duct 14 and the second air supply duct. The damper may be used to open and close the air duct 14 and the second air supply duct, thereby controlling the opening or closing of the refrigeration function of the second storage chamber 30.

[0078] See also Figures 2 to 4 As shown, in some embodiments, a second air supply port 51 may be provided on the front wall of the second air duct assembly 5. The second air supply port 51 may be connected to the second air supply duct in the second air duct assembly 5 and the storage chamber in front of the second air duct assembly 5, that is, the second air supply port 51 may be connected to the second air supply duct and the second storage chamber 30. The cold air in the evaporation bin 21 may be transported to the second storage chamber 30 through the second air supply duct and the second air supply port 51, thereby achieving refrigeration in the first storage chamber 20.

[0079] In some embodiments, a plurality of second air supply ports 51 may be provided on the front wall of the second air duct assembly 5. The plurality of second air supply ports 51 are arranged at intervals on the front wall of the second air duct assembly 5. The cold air in the second air supply duct can be transported into the second storage chamber 30 through the plurality of second air supply ports 51, thereby improving the refrigeration efficiency and refrigeration uniformity of the second storage chamber 30. It should be noted that the number of the second air supply ports 51 can be adjusted as needed, and is not limited here.

[0080] In some embodiments, the second box 3 may be provided with a second return air port 31. The second return air port 31 may be connected to the second storage chamber 30 in the second box 3. A return air duct (not shown in the figure) may be provided between the first box 2 and the second box 3. The first end of the return air duct may be connected to the second storage chamber 30 in the second box 3. The second end of the return air duct may be connected to the first box 2. The second end of the return air duct may be connected to the evaporation bin 21 in the first box 2. Therefore, the air in the second storage chamber 30 can return to the evaporation bin 21 through the second return air port 31 and the return air duct, be cooled again by the evaporator 102, and then be transported into the second storage chamber 30 through the second air supply duct and the second air supply port 51, forming a refrigeration air cycle.

[0081] Fig.10 yes Figure 7 Middle BB section view. Fig.11 yes Fig.10 Schematic diagram of the structure in another state. Fig.12 yes Figure 8 Schematic diagram of part of the structure.

[0082] See also Figures 7 to 12 As shown, in some embodiments, a reserved wind slot 22 may be recessed on the rear wall of the first box 2. The reserved wind slot 22 may be provided on the back side of the evaporation bin 21. The reserved wind slot 22 may be connected to the evaporation bin 21. The evaporator 102 may be arranged opposite to the reserved wind slot 22. The reserved wind slot 22 may be provided on the back side of the evaporator 102. When the evaporator 102 is blocked by frost, the air flow inside the evaporator 102 is poor or cannot flow, and the air in the evaporation bin 21 may flow through the gap between the periphery of the evaporator 102 and the box and the reserved wind slot 22, thereby ensuring the smooth flow of air in the evaporation bin 21, maintaining a good refrigeration effect of the refrigerator, and thus improving the frost blockage problem of the refrigerator.

[0083] It should be noted that, in some other embodiments, when the evaporation chamber 21 and the evaporator 102 are arranged on other side walls in the first tank 2, the reserved air slot 22 can be recessed on the corresponding inner wall in the first tank 2. The reserved air slot 22 can be arranged directly opposite to the evaporator 102.

[0084] In some embodiments, the reserved air slots 22 may be arranged in a rectangular structure. The outline of the evaporator 102 may be arranged in a rectangular structure. The area of ​​the reserved air slots 22 may be greater than or equal to the area of ​​the evaporator 102.

[0085] In some embodiments, there may be a gap between the reserved air slot 22 and the evaporator 102. When the evaporator 102 is blocked by frost, the air in the evaporation chamber 21 may flow through the reserved air slot 22 and the gap between the reserved air slot 22 and the evaporator 102.

[0086] See also Figures 9 and 10 As shown, in some embodiments, the first guide wall 221 and the second guide wall 222 may be respectively provided on opposite sides of the reserved wind slot 22. The first guide wall 221 may be arranged obliquely toward the center direction of the reserved wind slot 22. The second guide wall 222 may be arranged obliquely toward the center direction of the reserved wind slot 22. The first guide wall 221 may be arranged at intervals from the evaporator 102. The second guide wall 222 may be arranged at intervals from the evaporator 102. Air circulation may be performed between the reserved wind slot 22 and the evaporation bin 21 through the gap between the first guide wall 221 and the evaporator 102 and the gap between the second guide wall 222 and the evaporator 102.

[0087] In some embodiments, the first guide wall 221 may be provided on the side wall of the reserved air slot 22 near the return air end of the evaporation bin 21. The second guide wall 222 may be provided on the side wall of the reserved air slot 22 near the outlet air end of the evaporation bin 21. Therefore, the air returning to the evaporation bin 21 through the first return air port 42 may flow through the evaporator 102 and then enter the reserved air slot 22 through the gap between the first guide wall 221 and the evaporator 102. The air in the reserved air slot 22 may flow to the outlet air end of the evaporation bin 21 through the gap between the second guide wall 222 and the evaporator 102, and then be transported into the first storage chamber 20 through the first air supply duct and the first air supply port 41, thereby ensuring the smooth flow of air in the evaporation bin 21, maintaining a good refrigeration effect of the refrigerator, and thus improving the frost blockage problem of the refrigerator.

[0088] In some embodiments, the first guide wall 221 may be disposed on the bottom side wall of the reserved wind slot 22. The return air end of the evaporation bin 21 may be located below the bottom of the evaporator 102. The first guide wall 221 may be arranged to extend upwardly and obliquely toward the upper rear side. The second guide wall 222 may be disposed on the top side wall of the reserved wind slot 22. The air outlet end of the evaporation bin 21 may be located above the top of the evaporator 102. The second guide wall 222 may be arranged to extend downwardly and obliquely toward the lower rear side.

[0089] Fig.13 yes Fig.12 Front view of . Fig.14 yes Fig.13 Schematic diagram of the structure in another state.

[0090] See also Figures 7 to 14 As shown, in some embodiments, a baffle 6 may be provided on the inner wall of the first box 2. The baffle 6 may be movably arranged on the inner wall of the first box 2. The baffle 6 may be movably arranged at the connection between the reserved air slot 22 and the evaporation bin 21. The baffle 6 may move toward the notch of the reserved air slot 22, so that the baffle 6 can close the connection between the reserved air slot 22 and the evaporation bin 21, thereby isolating the reserved air slot 22 from the evaporation bin 21.

[0091] When the evaporator 102 is working normally, there is no frost blockage problem in the evaporator 102, and the air in the evaporation bin 21 can flow through the gap between the evaporation fins of the evaporator 102. At this time, the reserved air slot 22 can be closed by the baffle 6, which can reduce the air flow space in the evaporation bin 21, improve the refrigeration effect of the refrigerator, save energy, and reduce the power consumption of the refrigerator.

[0092] When frost blockage occurs on the evaporator 102, it is difficult for the air in the evaporation bin 21 to flow through the gaps between the evaporation fins. At this time, the connection between the reserved air slot 22 and the evaporation bin 21 can be opened through the baffle 6, so that the reserved air slot 22 can be connected to the evaporation bin 21, thereby increasing the air flow space in the evaporation bin 21 and allowing the air in the evaporation bin 21 to flow through the reserved air slot 22, thereby ensuring the smooth flow of air in the evaporation bin 21 and maintaining a good refrigeration effect of the refrigerator, thereby improving the frost blockage problem of the refrigerator.

[0093] In some embodiments, the baffle 6 can be movably disposed on the rear wall of the first box 2. The baffle 6 can be used to open or close the reserved air slot 22 on the rear wall of the first box 2. It should be noted that in other embodiments, when the evaporation bin 21 and the reserved air slot 22 are disposed on other side walls of the first box 2, the baffle 6 can be movably disposed on the corresponding inner wall of the first box 2.

[0094] See also Figures 8 to 14 As shown, in some embodiments, the baffle 6 can be movably attached to the inner wall of the first box 2. The baffle 6 can move along the inner wall of the first box 2. The baffle 6 can move along the inner wall of the first box 2 toward one side of the reserved wind slot 22, so that the baffle 6 can open the notch of the reserved wind slot 22 and open the connection between the reserved wind slot 22 and the evaporation bin 21, and the baffle 6 can be located on one side of the reserved wind slot 22. The baffle 6 can move along the inner wall of the first box 2 toward the reserved wind slot 22, so that the baffle 6 can close the notch of the reserved wind slot 22 and close the connection between the reserved wind slot 22 and the evaporation bin 21, and the baffle 6 can cover the notch of the reserved wind slot 22.

[0095] See also Figure 13 to Figure 14 As shown, in some embodiments, the baffle 6 can be movably arranged on the upper side of the reserved wind slot 22. When the baffle 6 needs to close the reserved wind slot 22, the baffle 6 can move downward and then cover the notch of the reserved wind slot 22. When the baffle 6 needs to open the reserved wind slot 22, the baffle 6 can move upward and then be arranged on the upper side of the reserved wind slot 22.

[0096] It should be noted that, in some other embodiments, the baffle 6 can be movably arranged at the lower side of the reserved air slot 22 or at other positions.

[0097] See also Figures 7 to 14As shown, in some embodiments, the refrigerator may include a drive unit 7. The drive unit 7 may be connected to the baffle 6. The drive unit 7 may drive the baffle 6 to move on the inner wall of the first box 2. The drive unit 7 can drive the baffle 6 to move at the connection between the reserved wind slot 22 and the evaporation bin 21, thereby opening or closing the connection between the reserved wind slot 22 and the evaporation bin 21. Specifically, the drive unit 7 may drive the baffle 6 to move toward the notch of the reserved wind slot 22, thereby closing the notch of the reserved wind slot 22, and closing the connection between the reserved wind slot 22 and the evaporation bin 21. The drive unit 7 may drive the baffle 6 to move toward one side of the reserved wind slot 22, thereby opening the notch of the reserved wind slot 22, and opening the connection between the reserved wind slot 22 and the evaporation bin 21.

[0098] In some embodiments, a receiving groove 23 may be recessed on the rear wall of the first box 2. The receiving groove 23 may be disposed on one side of the reserved air groove 22. The driving unit 7 may be disposed in the receiving groove 23.

[0099] In some embodiments, the refrigerator may include a main control board (not shown in the figure). The main control board may be connected to the drive unit 7 by signal. The main control board may control the drive unit 7 to work according to the detection signal of whether the evaporator 102 is blocked by frost, so that the drive unit 7 can drive the baffle 6 to open or close the connection between the reserved air slot 22 and the evaporation bin 21. When the control board receives the detection signal of whether the evaporator 102 is blocked by frost, the drive unit 7 can drive the baffle 6 to move to one side of the notch of the reserved air slot 22, open the connection between the reserved air slot 22 and the evaporation bin 21, and connect the reserved air slot 22 with the evaporation bin 21. When the detection signal of no frost blockage of the evaporator 102 is received, the drive unit 7 can drive the baffle 6 to move toward the notch of the reserved air slot 22, close the connection between the reserved air slot 22 and the evaporation bin 21, and isolate the reserved air slot 22 from the evaporation bin 21.

[0100] In some embodiments, a first temperature sensor (not shown) may be provided in the storage chamber. The first temperature sensor may be provided in the first storage chamber 20. The first temperature sensor may be used to detect the temperature in the storage chamber. The first temperature sensor may be used to detect the temperature in the first storage chamber 20. The first temperature sensor may be connected to the main control board signal. The first temperature sensor may send the temperature signal in the first storage chamber 20 to the main control board.

[0101] In some embodiments, a second temperature sensor (not shown) may be provided on the evaporator 102. The second temperature sensor may be used to detect the temperature of the evaporator 102. The second temperature sensor may be connected to the main control board signal. The second temperature sensor may send the temperature signal of the evaporator 102 to the main control board.

[0102] It should be noted that, in other embodiments, the second temperature sensor may also be disposed at other positions in the evaporation chamber 21. The second temperature sensor may also be used to detect the air temperature in the evaporation chamber 21.

[0103] In some embodiments, when the temperature difference detected by the first temperature sensor and the second temperature sensor is within a preset threshold, it means that the evaporator 102 has no frost blockage problem. The main control board can control the drive unit 7 to drive the baffle 6 to close the connection between the reserved air duct 22 and the evaporation bin 21, so that the reserved air duct 22 is isolated from the evaporation bin 21, thereby reducing the air flow space in the evaporation bin 21, improving the refrigeration effect of the refrigerator, saving energy, and reducing the power consumption of the refrigerator.

[0104] In some embodiments, when the temperature difference detected by the first temperature sensor and the second temperature sensor is outside the preset threshold, it means that the evaporator 102 has a frost blockage problem. The main control board can control the drive unit 7 to drive the baffle 6 to open the connection between the reserved air slot 22 and the evaporation bin 21, so that the reserved air slot 22 is connected to the evaporation bin 21, thereby increasing the air flow space in the evaporation bin 21, so that the air in the evaporation bin 21 can flow through the reserved air slot 22, thereby ensuring the smooth flow of air in the evaporation bin 21, maintaining a good refrigeration effect of the refrigerator, and thus improving the frost blockage problem of the refrigerator.

[0105] In some embodiments, the refrigerator may include a defrost unit (not shown). The defrost unit may be disposed in the evaporation bin 21. The defrost unit may be disposed on the evaporator 102. The defrost unit may be used to heat and defrost the evaporator 102. When the evaporator 102 needs to be defrosted, the defrost unit may be turned on to heat and defrost the evaporator 102. When the evaporator 102 is seriously blocked by frost, the evaporator 102 may be heated and defrosted by the defrost unit to solve the frost blockage problem of the evaporator 102.

[0106] In some embodiments, the refrigerator may include a timing unit (not shown). The timing unit may be connected to the compressor 101 signal. The timing unit may be connected to the main control board signal. The timing unit may be used to detect the continuous working time of the compressor 101. The compressor 101 may be connected to the main control board signal.

[0107] When the temperature difference detected by the first temperature sensor and the second temperature sensor is outside the preset threshold, and the timing unit detects that the continuous working time of the compressor 101 reaches the preset time, it means that the evaporator 102 has a serious frost blockage problem. The main control board can control the compressor 101 to stop working, and control the defrost unit to heat and defrost the evaporator 102.

[0108] In some embodiments, after defrosting is completed, the compressor 101 can be controlled by the main control board to restart working. At this time, the main control board can re-control the driving unit 7 to drive the baffle 6 to close the connection between the reserved air slot 22 and the evaporation bin 21, so that the reserved air slot 22 is isolated from the evaporation bin 21, thereby reducing the air flow space in the evaporation bin 21, improving the refrigeration effect of the refrigerator, saving energy, and reducing the power consumption of the refrigerator.

[0109] Based on the above technical solution, the embodiment of the utility model has at least the following advantages and positive effects:

[0110] In the refrigerator of the embodiment of the utility model, an air duct assembly is provided in the box, an evaporation bin 21 is provided between the air duct assembly and the inner wall of the box, and the evaporator 102 is provided in the evaporation bin 21; a reserved air slot 22 communicating with the evaporation bin 21 is provided on the inner wall of the box, and the evaporator 102 is arranged opposite to the reserved air slot 22. A baffle 6 is provided at the connection between the reserved air slot 22 and the evaporation bin 21. When frost blockage occurs on the evaporator 102, the baffle 6 can be used to open the connection between the reserved air slot 22 and the evaporation bin 21, so that the reserved air slot 22 is connected to the evaporation bin 21, thereby increasing the air flow space in the evaporation bin 21, allowing the air in the evaporation bin 21 to flow through the reserved air slot 22, thereby ensuring the smooth flow of air in the evaporation bin 21 and maintaining a good refrigeration effect of the refrigerator, thereby improving the frost blockage problem of the refrigerator; when frost blockage does not occur on the evaporator 102, the baffle 6 can be used to close the connection between the reserved air slot 22 and the evaporation bin 21, so that the reserved air slot 22 is isolated from the evaporation bin 21, thereby reducing the air flow space in the evaporation bin 21, thereby improving the refrigeration effect of the refrigerator, saving energy, and reducing the power consumption of the refrigerator.

[0111] Although the utility model has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the utility model can be implemented in a variety of forms without departing from the spirit or essence of the utility model, it should be understood that the above-mentioned embodiments are not limited to any of the aforementioned details, but should be widely interpreted within the spirit and scope defined by the attached claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the attached claims.

Claims

1. A refrigerator, characterized in that: include: A box body, which forms an outer shell of the refrigerator; A box liner is arranged in the box body, and a storage room is formed in the box liner; An air duct assembly is arranged in the box; an evaporation chamber is formed between the air duct assembly and the inner wall of the box; a reserved air slot is concavely arranged on the inner wall of the box, and the reserved air slot is communicated with the evaporation chamber; an evaporator, which is arranged in the evaporation bin, and the evaporator is arranged opposite to the reserved air slot; A baffle, movably disposed on the inner wall of the box, and disposed at the connection between the reserved air slot and the evaporation bin; Wherein, the baffle can close the connection between the reserved air slot and the evaporation bin, so as to isolate the reserved air slot from the evaporation bin; The baffle plate can open the connection between the reserved air slot and the evaporation bin, so that the reserved air slot is connected to the evaporation bin.

2. The refrigerator according to claim 1, characterized in that: The air duct assembly is arranged on the back side of the storage chamber, and the evaporation chamber is formed between the back side of the air duct assembly and the rear wall inside the box; The reserved air slot is recessed on the rear wall inside the box, and the reserved air slot is located at the back side of the evaporation bin and the evaporator.

3. The refrigerator according to claim 2, characterized in that: The refrigerator comprises a driving unit, and the driving unit is connected to the baffle; The driving unit can drive the baffle to move at the connection point between the reserved air slot and the evaporation bin, so as to open or close the connection point between the reserved air slot and the evaporation bin.

4. The refrigerator according to claim 3, characterized in that: A receiving groove is concavely provided on the rear wall of the box, and the receiving groove is provided on one side of the reserved air groove; The driving unit is arranged in the accommodating groove.

5. The refrigerator according to claim 3, characterized in that: The refrigerator comprises a main control board, and the main control board is connected to the driving unit by signal; The main control board can control the driving unit to work, so that the driving unit can drive the baffle to open or close the connection between the reserved air slot and the evaporation bin.

6. The refrigerator according to claim 5, characterized in that: A first temperature sensor is provided in the storage chamber, and the first temperature sensor is used to detect the temperature in the storage chamber; The evaporator is provided with a second temperature sensor, and the second temperature sensor is used to detect the temperature of the evaporator; The first temperature sensor and the second temperature sensor are respectively connected to the main control board by signal; The main control board can control the driving unit to drive the baffle to open or close the connection between the reserved air slot and the evaporation bin according to the temperature difference detected by the first temperature sensor and the second temperature sensor.

7. The refrigerator according to claim 6, characterized in that The refrigerator comprises a defrost unit, the defrost unit is arranged in the evaporation bin, and the defrost unit is arranged on the evaporator; The defrosting unit is used to heat and defrost the evaporator.

8. The refrigerator according to claim 7, characterized in that: The refrigerator comprises a compressor and a timing unit, wherein the compressor is connected to the main control board by signal; the timing unit is connected to the compressor and the main control board by signal respectively, and the timing unit is used to detect the continuous working time of the compressor; The main control board can control the operation of the compressor and the defrost unit according to the temperature difference detected by the first temperature sensor and the second temperature sensor and the continuous operation time detected by the timing unit.

9. The refrigerator according to claim 2, characterized in that: An air supply duct is provided in the air duct assembly, and the air supply duct is connected to the air outlet end of the evaporation bin; An air supply port is provided on the front wall of the air duct assembly, and the air supply port is connected with the air supply duct and the storage chamber; The air duct assembly is provided with a return air port, and the return air port is connected with the return air end of the evaporation bin and the storage chamber.

10. The refrigerator according to claim 9, characterized in that: A first guide wall is provided on the side wall of the reserved air slot close to the return air end of the evaporation bin, and the first guide wall is arranged at an interval with the evaporator; A second guide wall is provided on the side wall of the reserved air slot close to the air outlet end of the evaporation bin, and the second guide wall is spaced apart from the evaporator.

11. The refrigerator according to claim 10, characterized in that: The air outlet end of the evaporation bin is located above the top of the evaporator, and the air return end of the evaporation bin is located below the bottom of the evaporator; The first guide wall is arranged on the bottom side wall of the reserved wind slot, and the first guide wall is arranged to extend upwardly and obliquely toward the upper rear side; The second guide wall is arranged on the top side wall of the reserved wind slot, and the second guide wall is arranged to extend downwardly and obliquely toward the rear lower side.

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