Refrigerator

Abstract

The embodiment of the invention relates to the technical field of refrigeration, in particular to a refrigerator. According to the refrigerator, the air duct assembly is arranged in the refrigerator body, the evaporation cavity and the storage chamber are formed, and the evaporator is installed in the evaporation cavity. The air duct assembly comprises a first air supply part, and a first air supply duct is formed so that cold air in the evaporation cavity can flow into the storage chamber. A notch is formed in the side, facing the air duct assembly, of the evaporator, so that at least part of the first air supply part is embedded into the notch, the projections, facing the rear wall of the refrigerator body, of the first air supply part and the evaporator in the depth direction of the refrigerator at least partially coincide, and therefore at least part of the first air supply part reuses the space, in the depth direction of the refrigerator, of the evaporator. The space in the depth direction of the refrigerator does not need to be additionally occupied, the combination thickness of the air duct assembly and the evaporator is reduced, the space in the depth direction of the refrigerator is saved, and then the effective volume of the refrigerator is increased.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of refrigeration, and particularly to a refrigerator. Background Art

[0002] Refrigerators are one of the indispensable household appliances in people's home lives. With the improvement of people's living standards, the requirements for refrigerator products are getting higher and higher, especially for the occupied space and usable volume of refrigerators.

[0003] As a heat exchange component for reducing the air temperature, the evaporator is installed at the rear side inside the liner, and the cold air passing through the evaporator is introduced into the storage compartment of the refrigerator through the air supply duct formed by the duct assembly. In the related art, the duct assembly is located at the front side of the evaporator, and both the duct assembly and the evaporator need to occupy the space at the back of the liner in the depth direction of the refrigerator, affecting the effective volume of the refrigerator. Summary of the Invention

[0004] The embodiments of the present application provide a refrigerator, which can improve the effective volume of the refrigerator.

[0005] In a first aspect, the embodiments of the present application provide a refrigerator, which includes:

[0006] A box body, which is constructed to form a receiving cavity with a pick-up opening;

[0007] A duct assembly, which is installed in the receiving cavity and divides the receiving cavity into an evaporation cavity and a storage compartment along the depth direction of the refrigerator; the storage compartment is located on one side of the pick-up opening; the duct assembly includes a first air supply part, and the first air supply part is constructed to form a first air supply duct for the cold air in the evaporation cavity to flow into the storage compartment;

[0008] An evaporator, which is installed in the evaporation cavity; a notch is formed on the side of the evaporator facing the duct assembly;

[0009] At least part of the first air supply part is embedded into the notch, and the projections of the first air supply part and the evaporator along the depth direction of the refrigerator towards the rear wall of the box body at least partially overlap.

[0010] The refrigerator according to the embodiment of the present application forms an evaporation chamber and a storage compartment by arranging an air duct assembly inside the box body, and an evaporator is installed in the evaporation chamber. The air duct assembly includes a first air supply part, which forms a first air supply duct for cold air in the evaporation chamber to flow into the storage compartment. A notch is formed on one side of the evaporator facing the air duct assembly, so that at least part of the first air supply part is embedded in the notch, and the projection of at least part of the first air supply part and the evaporator along the depth direction of the refrigerator towards the rear wall of the box body at least partially overlaps. In this way, at least part of the first air supply part reuses the space of the evaporator along the depth direction of the refrigerator, without additionally occupying the space in the depth direction of the refrigerator, reducing the combined thickness of the air duct assembly and the evaporator, helping to save the space in the depth direction of the refrigerator, and further helping to increase the effective volume of the refrigerator. When a drawer is arranged in the storage compartment, the drawer can have a larger stroke, improving the convenience of using the drawer.

[0011] In some embodiments of the present application, a plurality of notches are provided, and the plurality of notches are arranged at intervals along the width direction of the refrigerator;

[0012] A plurality of first air supply parts are provided, and at least part of each first air supply part is embedded in one of the notches.

[0013] By arranging a plurality of first air supply parts in the embodiment of the present application, the air supply volume of the storage compartment is ensured, and thus the refrigeration effect is ensured; each first air supply part is embedded in one notch, which helps to reduce the installation occupation space of the air duct assembly and the evaporator.

[0014] In some embodiments of the present application, one notch is provided and is located in the middle of the evaporator along the width direction of the refrigerator; one first air supply part is provided and is embedded in the notch.

[0015] With such an arrangement, it helps to simplify the structure of the air duct assembly; and when the air is supplied through one first air supply part, the cold air is more concentrated during the air supply process, and the air resistance is smaller, which helps to reduce the loss during the cold air transportation process.

[0016] In some embodiments of the present application, two notches are provided, and the two notches are respectively arranged on both sides of the evaporator along the width direction of the refrigerator;

[0017] Two first air supply parts are provided, and at least part of the two first air supply parts are respectively embedded in the two notches.

[0018] By arranging two first air supply parts in the embodiment of the present application, the air supply volume of the storage compartment can be ensured, and the space occupied by setting too many first air supply parts can be avoided. At least part of the two first air supply parts are respectively embedded in the notches, reducing the additional installation occupation space required for the two first air supply parts, so that at least part of the first air supply parts can reuse the space of the notches, which helps to increase the volume of the refrigerator.

[0019] In some embodiments of the present application, the evaporator includes a refrigerant tube and a plurality of fins disposed outside the refrigerant tube;

[0020] The bottom of the evaporator forms a first heat exchange area and two second heat exchange areas; along the width direction of the refrigerator, the first heat exchange area is located between the two second heat exchange areas; wherein the fin distribution density of the first heat exchange area is greater than the fin distribution density of the second heat exchange area.

[0021] Through the above configuration, the second heat exchange area is set on both sides of the evaporator, the air resistance of the second heat exchange area is small, and more air with low wind speed on both sides of the return air duct enters the second heat exchange area; the first heat exchange area is set in the middle of the evaporator, the air resistance of the first heat exchange area is large, and more air with high wind speed in the middle of the return air duct enters the first heat exchange area. In this way, the return air speed of the evaporator along the width direction of the refrigerator can be consistent, so that the evaporator has balanced heat exchange, which helps to reduce energy consumption; it can also make the frost of the evaporator relatively consistent, which helps to shorten the defrosting time.

[0022] In some embodiments of the present application, along the width direction of the refrigerator, a side of the first air supply portion facing away from the middle of the evaporator protrudes from an edge of the evaporator.

[0023] By extending the first air supply portion outwardly away from the middle of the evaporator to protrude from the edge of the evaporator, not only can the gap on both sides of the evaporator be utilized, but it also helps to increase the cross-sectional area of the first air supply duct to ensure the air supply volume.

[0024] In some embodiments of the present application, the air duct assembly also includes a second air supply part connected to the top of the first air supply part, the second air supply part is structured to form a second air supply duct, a refrigeration fan is installed in the second air supply duct, and the refrigeration fan is configured to drive the cold air in the evaporation chamber into the storage compartment through the second air supply duct, or into the storage compartment through the second air supply duct and the first air supply duct.

[0025] The air duct assembly of the embodiment of the present application forms a first air supply duct by setting a first air supply part to transport the cold air in the evaporation chamber to the storage compartment; and forms a second air supply duct by setting a second air supply part on the top of the first air supply part to transport the cold air in the evaporation chamber to the storage compartment. This not only helps to increase the air supply volume, but also the second air supply duct provides an installation space for the refrigeration fan to ensure air supply toward the storage compartment.

[0026] In some embodiments of the present application, the air duct assembly includes:

[0027] The front cover plate of the air duct faces the storage compartment, and the front cover plate of the air duct is configured to form an air supply opening; the front cover plate of the air duct and the cavity wall of the accommodation cavity enclose a return air duct, and the return air duct communicates the storage compartment with the evaporation cavity to allow the air in the storage compartment to flow back to the evaporation cavity;

[0028] The rear cover plate of the air duct faces the evaporation cavity; the rear cover plate of the air duct includes:

[0029] A first plate portion, the first plate portion is connected to the front cover plate of the air duct and encloses to form the first air supply duct;

[0030] A second plate portion, which is connected to the top end of the first plate portion, and the second plate portion is connected to the front cover plate of the air duct and encloses to form the second air supply duct;

[0031] Wherein, the part of the first plate portion and the front cover plate of the air duct that forms the first air supply duct forms the first air supply part; the part of the second plate portion and the front cover plate of the air duct that forms the second air supply duct forms the second air supply part.

[0032] In the embodiment of the present application, the air duct assembly encloses to form an air supply duct through the front cover plate and the rear cover plate of the air duct. The rear cover plate of the air duct is connected to the front cover plate of the air duct by setting the first plate portion to enclose to form the first air supply duct; the rear cover plate of the air duct is connected to the front cover plate of the air duct by setting the second plate portion to enclose to form the second air supply duct. The structure of the air duct assembly in the embodiment of the present application is simple.

[0033] In a second aspect, the embodiment of the present application provides a refrigerator, which includes:

[0034] A box body, in which a storage compartment and an evaporation cavity are provided; an evaporator is installed in the evaporation cavity; an air duct assembly is provided between the evaporation cavity and the storage compartment;

[0035] The air duct assembly includes a first air supply part, and the first air supply part is configured to form a first air supply duct to allow the cold air in the evaporation cavity to flow into the storage compartment;

[0036] The evaporator is configured to form a notch;

[0037] At least part of the first air supply part is embedded into the notch, and the projection of the first air supply part and the evaporator along the depth direction of the refrigerator towards the rear wall of the box body at least partially coincides;

[0038] The air duct assembly forms a mating recess outside the area of the first air supply part; the part of the evaporator outside the notch is embedded into the mating recess.

[0039] In the refrigerator of the embodiment of the present application, a notch is provided in the evaporator so that at least a portion of the first air supply portion of the air duct assembly is embedded in the notch; the air duct assembly also forms a matching recessed portion so that a portion of the evaporator is embedded in the matching recessed portion. In this way, the evaporator and the air duct assembly are matched in a concave-convex manner, so that the combined thickness of the evaporator and the air duct assembly is thinned, which helps to increase the effective volume of the refrigerator.

[0040] In a third aspect, an embodiment of the present application provides a refrigerator, comprising:

[0041] A box body, wherein a storage compartment is arranged in the box body;

[0042] Evaporator, used to generate cold;

[0043] An air duct assembly, used to deliver the cold energy generated by the evaporator into the storage compartment;

[0044] When the evaporator is observed from a top view of the housing, the evaporator is in a generally rectangular shape with at least one notch;

[0045] At least a portion of the air duct assembly is located in the space of the notch.

[0046] In the refrigerator of the embodiment of the present application, when observing the evaporator from a top view of the cabinet, the evaporator presents a roughly rectangular shape with at least one notch, and at least a portion of the air duct assembly is located in the space of the notch, so that this portion of the air duct assembly reuses the space of the notch of the evaporator without occupying additional space in the cabinet, which helps to increase the effective volume of the refrigerator.

[0047] In some embodiments of the present application, the evaporator includes a plurality of refrigerant tubes and a plurality of fins disposed outside the plurality of refrigerant tubes;

[0048] When observing the evaporator from a top view of the box body, along the width direction of the refrigerator, the length of a portion of the refrigerant pipe is shorter than the length of another portion of the refrigerant pipe to form the gap.

[0049] In the embodiment of the present application, the gap is formed by shortening part of the length of the refrigerant pipe, so that the structure of the evaporator is simple.

[0050] In a fourth aspect, an embodiment of the present application provides a refrigerator, comprising:

[0051] A box body, wherein a storage compartment is arranged in the box body;

[0052] Evaporator, used to generate cold;

[0053] An air duct assembly, used to deliver the cold energy generated by the evaporator into the storage compartment;

[0054] Wherein, the evaporator is configured to form a notch; at least a part of the air duct assembly is located in the space of the notch;

[0055] The projection parts of the air duct assembly and the evaporator along the depth direction of the refrigerator towards the rear wall of the cabinet partially overlap; the projection parts of the air duct assembly and the evaporator along the width direction of the refrigerator towards the side wall of the cabinet partially overlap.

[0056] In the embodiment of the present application, the evaporator forms a notch, so that at least a part of the air duct assembly is located in the space of the notch, and the projection parts of the air duct assembly and the evaporator along the depth direction of the refrigerator towards the rear wall of the cabinet partially overlap; the projection parts of the air duct assembly and the evaporator along the width direction of the refrigerator towards the side wall of the cabinet partially overlap, so that part of the air duct assembly coincides with part of the evaporator in the depth direction and width direction of the refrigerator, reducing the installation occupation space of the air duct assembly and the evaporator and improving the effective volume of the refrigerator.

[0057] In a fifth aspect, an embodiment of the present application provides a refrigerator, which includes: a cabinet provided with a storage compartment;

[0058] An air duct assembly for sending cold air to the storage compartment;

[0059] An evaporator located between the air duct assembly and the rear wall of the cabinet, and the evaporator has at least two thicknesses, where the thickness refers to the dimension along the depth direction of the cabinet.

[0060] In the refrigerator according to the embodiment of the present application, by setting at least two thicknesses on the evaporator, part of the area of the evaporator has a smaller thickness, forming an avoidance space to provide space for the embedding of other components in the refrigerator, thereby reducing the occupation of the storage space in the refrigerator and helping to improve the effective volume of the refrigerator.

[0061] In some embodiments of the present application, the part of the evaporator with a smaller thickness forms a notch, and at least part of the air duct assembly is located in the notch.

[0062] In the embodiment of the present application, the part of the evaporator with a smaller thickness forms a notch so that at least part of the air duct assembly is located in the notch, reducing the combined volume of the air duct assembly and the evaporator, thereby reducing the installation occupation space of the air duct assembly and the evaporator in the cabinet, and further helping to improve the effective volume of the refrigerator. Description of the Drawings

[0063] In order to more clearly illustrate the embodiments of the present application or the implementation manners in the related art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the related art. Obviously, the following drawings are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings.

[0064] Figure 1 Schematic diagram of the structure of the refrigerator provided for some embodiments of the present application;

[0065] Figure 2 Front view of the internal structure of the inner liner provided for some embodiments of the present application;

[0066] Figure 3 For Figure 2 A-A cross-sectional view in

[0067] Figure 4 Explosion diagram of the inner liner, evaporator and air duct assembly provided for some embodiments of the present application;

[0068] Figure 5 Top view of the evaporator provided for some embodiments of the present application;

[0069] Figure 6 Cooperation diagram of the evaporator and the air duct assembly provided for some embodiments of the present application;

[0070] Figure 7 Cooperation diagram of the evaporator and the air duct assembly provided for some other embodiments of the present application;

[0071] Figure 8 Front view of the air duct assembly and the evaporator provided for some embodiments of the present application;

[0072] Figure 9 For Figure 8 B-B cross-sectional view in

[0073] Figure 10 Front view of the air duct assembly provided for some embodiments of the present application;

[0074] Figure 11 For Figure 10 C-C cross-sectional view in

[0075] Figure 12 For Figure 10 D-D cross-sectional view in

[0076] Figure 13 Explosion diagram of the air duct assembly provided for some embodiments of the present application;

[0077] Figure 14 Front view of the rear cover plate of the air duct provided for some embodiments of the present application;

[0078] Figure 15 For Figure 10 Flow field simulation diagram of the air duct assembly in

[0079] Figure 16 Front view of the evaporator and the heater provided for some embodiments of the present application;

[0080] Figure 17a for Figure 10 Simulation diagram of return air velocity in the return air duct at S1;

[0081] Figure 17b for Figure 10 Simulation diagram of return air velocity in the return air duct at S2;

[0082] Figure 17c for Figure 10 Simulation diagram of return air velocity in the return air duct at S3;

[0083] Figure 17d for Figure 10 Simulation diagram of return air velocity in the return air duct at S4;

[0084] Figure 17e for Figure 10 Simulation diagram of return air velocity in the return air duct at S5;

[0085] Figure 17f for Figure 10 Simulation diagram of return air velocity in the return air duct at S6;

[0086] Figure 18 A front view of an air duct assembly and an evaporator provided in some other embodiments of the present application;

[0087] Figure 19 for Figure 18 EE cross-sectional view in;

[0088] Figure 20 A schematic diagram of the structure of an air duct assembly provided in some other embodiments of the present application;

[0089] Figure 21 A front view of the rear cover of the air duct provided in some other embodiments of the present application.

[0090] Description of reference numerals:

[0091] 10: box body; 20: box liner; 21: storage chamber; 22: storage compartment; 23: evaporation chamber; 30: door body;

[0092] 100: air duct assembly; 101: air inlet; 102: air supply duct; 103: air supply outlet; 1031: first air supply outlet; 1032: second air supply outlet; 104: refrigerated air supply outlet; 105: refrigerated air return outlet; 106: through-port; 110: matching recessed portion; 120: air duct front cover plate; 130: air duct rear cover plate; 131: first plate portion; 132: second plate portion; 140: heat insulation member;

[0093] 200: Evaporator; 201: Notch; 210: Refrigerant pipe; 211: First - layer refrigerant pipe; 212: Second - layer refrigerant pipe; 220: Fin; 230: Wind - blocking member; 240: First heat - exchange area; 250: Second heat - exchange area; 260: Third heat - exchange area; 270: End plate;

[0094] 300: First air - supply part; 301: First air - supply air duct;

[0095] 400: Second air - supply part; 401: Second air - supply air duct; 410: First air - guiding rib; 411: First rib; 412: Second rib; 420: Second air - guiding rib; 430: Third air - guiding rib; 431: First arc - shaped rib; 432: Second arc - shaped rib; 440: Fourth air - guiding rib;

[0096] 500: Return - air part; 501: Return - air air duct;

[0097] 600: Heater;

[0098] 700: Refrigeration fan. Detailed implementation manners

[0099] To make the objectives, implementation manners and advantages of this application clearer, the following will clearly and completely describe the exemplary implementation manners of this application with reference to the accompanying drawings in the exemplary embodiments of this application. Obviously, the described exemplary embodiments are only a part rather than all of the embodiments of this application.

[0100] It should be noted that the brief description of the terms in this application is only for facilitating the understanding of the following described implementation manners, rather than intending to limit the implementation manners of this application. Unless otherwise specified, these terms should be understood in their ordinary and general meanings.

[0101] In addition, the terms "include" and "have" and any of their variations are intended to cover but not exclusively include. For example, a product or device including a series of components does not necessarily have to be limited to those clearly listed components, but may include other components not clearly listed or inherent to these products or devices.

[0102] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for facilitating the description of this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to this application.

[0103] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0104] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "mounted", "connected" and "coupled" shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0105] The volume ratio of a refrigerator refers to the ratio between the effective internal volume and the external volume of the refrigerator, usually expressed as a percentage. The effective volume of the refrigerator refers to the actual space capacity inside the refrigerator that can be used to store food, which directly affects how much food the user can store. People's requirements for the volume ratio and effective volume of refrigerators are getting higher and higher.

[0106] As a heat exchange component for lowering the air temperature, the evaporator is installed at the rear side inside the liner, and the cold air passing through the evaporator is introduced into the storage compartment of the refrigerator through the air supply duct formed by the duct assembly. Among them, the duct assembly also forms an air supply port, and the air supply port communicates the air supply duct and the storage compartment. In order to improve the temperature uniformity in the height direction of the refrigerator, a plurality of air supply ports are usually arranged at intervals along the height direction of the refrigerator. Therefore, at least part of the air supply duct is located in front of the evaporator. Thus, at least part of the duct assembly is located in front of the evaporator, and both the duct assembly and the evaporator need to occupy the space at the rear of the liner in the depth direction of the refrigerator, affecting the effective volume of the refrigerator.

[0107] In some refrigerator products, the evaporator is arranged at the top, bottom or middle of the liner, etc., so that the evaporator does not occupy the space in the depth direction of the refrigerator, which helps to increase the pulling stroke and volume of the drawer. However, since the evaporator is separated from the duct assembly, the evaporator and the duct assembly each occupy the internal space of the liner, and the improvement of the overall effective volume of the refrigerator is not significant. Moreover, when assembling the evaporator at the top and bottom of the whole refrigerator, the assembly difficulty is great and the efficiency is low.

[0108] If the installation occupied space of the evaporator is reduced by shrinking the volume of the evaporator, such as reducing the size of the evaporator along the thickness direction of the refrigerator, reducing the size of the evaporator along the width direction of the refrigerator, etc. This is likely to affect the refrigerating capacity of the refrigerator, cause the evaporator to frost easily, and result in high energy consumption of the refrigerator.

[0109] To this end, in the embodiments of the present application, a notch is provided on one side of the evaporator facing the air duct assembly, so that a part of the air supply duct of the air duct assembly is embedded in the notch, so that a part of the air duct assembly that multiplexes the evaporator occupies the space in the depth direction of the refrigerator, and this part does not need to occupy additional space, thereby reducing the installation space occupied by the evaporator and the air duct assembly as a whole in the liner, so as to increase the effective volume of the refrigerator.

[0110] Next, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0111] Combined with Figure 1 , some embodiments of the present application provide a refrigerator, which includes a box body 10. The box body 10 can be constructed to form a storage compartment 22 with an access opening for storing items.

[0112] A plurality of storage compartments 22 can be provided to expand the storage space. According to the different storage temperatures of the storage compartments 22, the storage compartments 22 can include at least one refrigerating compartment and at least one freezing compartment. Among them, the internal temperature of the refrigerating compartment can be maintained between about 0°C and 5°C to store items in a refrigerating mode; the internal temperature of the freezing compartment can be maintained between about -30°C and 0°C to store items in a freezing mode.

[0113] In some possible implementation manners, at least one of the storage compartments 22 can also be set as a vacuum chamber or a variable temperature chamber, etc., which will not be elaborated in the embodiments of the present application.

[0114] Exemplarily, two storage compartments 22 can be provided. The two storage compartments 22 can be stacked vertically; the two storage compartments 22 can be arranged side by side in the horizontal direction. One of them can be set as a refrigerating compartment, and one of them can be set as a freezing compartment.

[0115] In some embodiments, combined with Figure 1 and Figure 2 , the box body 10 can include a liner 20 and a box shell. The liner 20 can be constructed to form a storage compartment 22 with an opening at the front side, and the opening at the front side is the access opening. The box shell can be connected to the outside of the liner 20 to form the appearance of the refrigerator.

[0116] The box body 10 can also include a box heat insulation layer, and the box heat insulation layer can be arranged between the liner 20 and the box shell. The box heat insulation layer can insulate the storage compartment 22 to minimize the heat exchange between the storage compartment 22 and the outside of the refrigerator, which is beneficial to ensuring the refrigeration effect of the refrigerator.

[0117] The refrigerator according to the embodiment of the present application may further include a refrigeration system for reducing the air temperature of the storage compartment 22. Exemplarily, the refrigeration system may be disposed within the cabinet 10. The refrigeration system may include a compressor, a condenser, a throttle, and an evaporator 200 connected in a cycle.

[0118] When the refrigeration system operates, the compressor compresses the refrigerant vapor to generate high-temperature and high-pressure refrigerant vapor, and conveys the refrigerant vapor into the condenser. The condenser liquefies the high-temperature and high-pressure refrigerant vapor to generate high-temperature and low-pressure refrigerant liquid, and conveys it to the throttle. After the throttle reduces the pressure of the refrigerant liquid, the high-pressure and low-temperature refrigerant liquid is transformed into low-pressure and low-temperature refrigerant liquid, and is conveyed to the evaporator 200. After receiving the low-pressure and low-temperature refrigerant liquid, the evaporator 200 causes it to boil under isobaric conditions, absorb heat and vaporize to form refrigerant vapor, so as to reduce the temperature in the storage compartment 22.

[0119] Continue to refer to Figure 1 , the refrigerator according to the embodiment of the present application may further include a door body 30, which is rotatably connected to the cabinet 10 to open or close the access opening. Exemplarily, the door body 30 is hinged to the cabinet 10.

[0120] One door body 30 may be correspondingly provided for each storage compartment 22; or, two door bodies 30 may be correspondingly provided for each storage compartment 22, and the two door bodies 30 may rotate in opposite directions to open or close the storage compartment 22.

[0121] Of course, in some possible implementation manners, a drawer is provided in the storage compartment 22, and the outer end of the drawer is configured to form the door body 30.

[0122] In some embodiments, the door body 30 may include a door inner liner. When the door body 30 closes the refrigerating compartment, the door inner liner faces the refrigerating compartment.

[0123] The door body 30 may include: a door outer shell; the door outer shell may be connected to the outside of the door inner liner to form the appearance of the door body 30. The door outer shell may be rotatably connected to the cabinet 10 to open or close the refrigerating compartment.

[0124] The door body 30 may further include a door heat insulation member 140, which may be disposed in the space between the door inner liner and the door outer shell. The door heat insulation member 140 can insulate the storage compartment 22 to minimize the heat exchange between the storage compartment 22 and the outside of the refrigerator, which is beneficial to ensuring the refrigeration effect of the refrigerator. The door heat insulation member 140 may be a foamed layer.

[0125] In some embodiments, a door shelf is provided on one side of the door body 30 facing the refrigerating compartment to increase the storage positions of the refrigerator. The door shelf has a storage cavity with an upward opening for storing items.

[0126] Referring to Figure 2 and Figure 3 In some embodiments of the present application, the liner 20 of the cabinet 10 is configured to form a receiving cavity 21 with an access opening. The receiving cavity 21 can not only form a storage compartment 22, but also provide an installation space for other components of the refrigerator.

[0127] In some embodiments of the present application, the refrigerator may further include an air duct assembly 100. The air duct assembly 100 is used to construct a channel for cold air flow, and send the cold generated by the evaporator 200 into the storage compartment 22.

[0128] Among them, the air duct assembly 100 is installed in the receiving cavity 21. It can be understood that the air duct assembly 100 is installed in the liner 20. The air duct assembly 100 is disposed close to the rear wall of the liner 20, so that a relatively large storage compartment 22 can be formed on the front side of the liner 20.

[0129] The air duct assembly 100 divides the receiving cavity 21 of the liner 20 in the depth direction of the refrigerator (corresponding to the Y-axis direction in Figure 3 ) into an evaporation cavity 23 and a storage compartment 22. Combining Figure 3 , there is a gap between the air duct assembly 100 and the rear wall of the liner 20 to form an evaporation cavity 23, and the side of the air duct assembly 100 facing the access opening forms a storage compartment 22.

[0130] The evaporator 200 of the refrigeration system, which is used to generate cold, is installed in the evaporation cavity 23, and the evaporator 200 is located in the lower part of the evaporation cavity 23. The evaporator 200 is located between the air duct assembly 100 and the rear wall of the cabinet 10. A heater 600 is disposed below the evaporator 200 to provide defrosting heat for the evaporator 200 to defrost the evaporator 200. Of course, this is not a limitation on the position of the heater 600, and the heater 600 can also be disposed at other positions of the evaporator 200.

[0131] Continuing to refer to Figure 2 and Figure 3 , the air duct assembly 100 is configured to form a supply air duct 102 and an air inlet 101. The air inlet 101 communicates the supply air duct 102 and the evaporation cavity 23, and the air inlet 101 is located on the side of the air duct assembly 100 facing the evaporation cavity 23. Along the height direction of the refrigerator (corresponding to the Z-axis direction in Figure 2 ), the air inlet 101 is located above the evaporator 200, so that the air inlet 101 communicates with the top of the evaporation cavity 23. In this way, the cold air after heat exchange through the evaporator 200 can enter the supply air duct 102 through the air inlet 101.

[0132] The air duct assembly 100 is also configured to form an air supply opening 103, and the air supply opening 103 is located on the side of the air duct assembly 100 facing the storage room 22. The air supply opening 103 communicates with the air supply duct 102 and the storage room 22. In this way, the cold air that has exchanged heat with the evaporator 200 can enter the air supply duct 102 through the air inlet 101, and then enter the storage room 22 through the air supply opening 103 to lower the temperature of the storage room 22.

[0133] In some embodiments, there is a gap between the bottom end of the air duct assembly 100 and the side wall of the inner container 20 to form a return air duct 501. The return air opening of the return air duct 501 connected to the storage room 22 is located below all the air supply openings 103, and the port of the return air duct 501 communicating with the evaporation chamber 23 is located at the bottom of the evaporation chamber 23. In this way, the air in the storage room 22 enters the return air duct 501 through the return air opening and returns to the evaporator 200 for heat exchange.

[0134] As Figure 4 shown, in some embodiments, a refrigeration fan 700 is installed in the air supply duct 102 to provide power for the circulation of cold air between the storage room 22 and the evaporation chamber 23. The refrigeration fan 700 is opposite to the air inlet 101, so that a negative pressure can be formed at the air inlet 101 to improve the efficiency of the cold air in the evaporation chamber 23 entering the storage room 22.

[0135] Under the action of the refrigeration fan 700, the cold air that has exchanged heat with the evaporator 200 in the evaporation chamber 23 enters the air supply duct 102 through the air inlet 101, and then enters the storage room 22 through the air supply opening 103; the air in the storage room 22 returns to the evaporation chamber 23 through the return air opening and the return air duct 501 and exchanges heat with the evaporator 200. In this way, it circulates repeatedly to lower the temperature of the storage room 22.

[0136] In some embodiments, Figure 3 the shown storage room 22 is a freezing room. A set of refrigeration system is provided in the refrigerator. The evaporator 200 of this refrigeration system not only cools the freezing room but also cools the refrigerating room. A refrigerating air supply opening 104 is provided at the top end of the inner container 20, and the refrigerating air supply opening 104 communicates with the air supply duct 102 and the first refrigerating air duct to convey the cold air in the air supply duct 102 to the refrigerating room through the first refrigerating air duct. A refrigerating return air opening 105 is provided at the bottom end of the inner container 20, and the refrigerating return air opening 105 communicates with the evaporation chamber 23 at the bottom of the evaporator 200 and the second refrigerating air duct, so that the air in the refrigerating room returns to the evaporation chamber 23 through the second refrigerating air duct and the refrigerating return air opening 105.

[0137] Combined with Figure 4 and Figure 5In some embodiments, when the evaporator 200 is observed from a top view of the housing 10 , the evaporator 200 is substantially rectangular in shape with at least one notch 201 .

[0138] It can be understood that in Figure 5 In the embodiment, the evaporator 200 is generally in a rectangular shape with at least one notch 201. Figure 6 , the evaporator 200 is observed from a top view of the housing 10 , and a cross-sectional view of the evaporator 200 and the air duct assembly 100 .

[0139] The notch 201 may be located in the thickness direction of the evaporator 200 (corresponding to Figure 5 The thickness direction of the evaporator 200 is parallel to the depth direction of the refrigerator.

[0140] Combination Figure 6 In some embodiments, the notch 201 is located on the side of the evaporator 200 facing the air duct assembly 100. This helps to simplify the structure of the air duct assembly 100, so that the air duct assembly 100 can not only separate the evaporation chamber and the storage compartment, but also facilitate the formation of the air supply port 103 on the air duct assembly 100 to connect the air supply duct 102 and the storage compartment 22.

[0141] Combination Figure 7 In other embodiments, the notch 201 may be located on the side of the evaporator 200 away from the air duct assembly 100. In this way, at least a portion of the air duct assembly 100 extends from the notch 201 through the side of the evaporator 200 along the width direction of the box to the side of the storage compartment 22, so as to facilitate the setting of the air supply port 103 connecting the air supply duct 102 and the storage compartment 22.

[0142] like Figure 6 As shown, the evaporator 200 has at least two thicknesses, wherein the thickness refers to the thickness of the evaporator 200 along the depth direction of the box (corresponding to Figure 6 The evaporator 200 has a first side and a second side along the depth direction of the housing, and the distance between the first side and the second side of the evaporator 200 along the depth direction of the housing is the thickness of the evaporator 200.

[0143] Exemplarily, the evaporator 200 has a first thickness D1 and a second thickness D2 , and the second thickness D2 is smaller than the first thickness D1 .

[0144] In this way, the evaporator 200 is provided with at least two thicknesses, so that the thickness of some areas of the evaporator 200 is smaller, and the volume of some areas of the evaporator 200 can be reduced, thereby reducing the installation space occupied by the evaporator 200. The part of the space saved by the evaporator 200 can provide installation space for other structures in the box liner, reduce the occupation of the internal space of the box liner 20, and help to increase the effective volume of the refrigerator.

[0145] Thus, a notch 201 is formed in the thinner part of the evaporator 200. As Figure 6 shown, the second thickness D2 is less than the first thickness D1, such that at least part of the air duct assembly 100 is located within the notch 201.

[0146] Combined with Figures 6 to 9 , at least a part of the air duct assembly 100 is located within the space of the notch 201. In this way, a part of the air duct assembly 100 is embedded into the notch 201 of the evaporator 200, such that this part of the air duct assembly 100 reuses the space of the evaporator 200 in the depth direction of the refrigerator without additionally occupying the space in the depth direction of the refrigerator, which helps to save the space in the depth direction of the refrigerator and thus helps to increase the effective volume of the refrigerator.

[0147] At least a part of the air duct assembly 100 is located within the notch 201 formed by the structure of the evaporator 200. Thus, the projection parts of the air duct assembly 100 and the evaporator 200 along the depth direction of the refrigerator (corresponding to the Y-axis direction in Figure 9 ) towards the rear wall of the refrigerator body coincide; the projection parts of the air duct assembly 100 and the evaporator 200 along the width direction of the refrigerator (corresponding to the X-axis direction in Figure 9 ) towards the side wall of the refrigerator body coincide, such that at least part of the air duct assembly 100 is embedded into the notch 201 of the evaporator 200, making part of the air duct assembly 100 coincide with part of the evaporator 200 in the depth direction and width direction of the refrigerator, reducing the installation occupied space of the air duct assembly 100 and the evaporator 200 and increasing the effective volume of the refrigerator.

[0148] The following will describe in detail the specific structures and functions of the air duct assembly 100 and the evaporator 200 in some embodiments of the present application with reference to the accompanying drawings.

[0149] Combined with Figure 4 , Figure 10 and Figure 11 , the air duct assembly 100 may include a first air supply part 300, and the first air supply part 300 is configured to form a first air supply air duct 301 for cold air in the evaporation chamber 23 to flow into the storage compartment 22. The first air supply air duct 301 may directly communicate with the evaporation chamber 23 and the storage compartment 22, or the first air supply air duct 301 communicates with the evaporation chamber 23 through an intermediate channel and directly communicates with the storage compartment 22.

[0150] Referring to Figure 4 , Figures 10 to 12, the air duct assembly 100 may include a second air supply part 400. The second air supply part 400 is connected to the top end of the first air supply part 300. The second air supply part 400 is configured to form a second air supply air duct 401, and the second air supply air duct 401 communicates with the evaporation chamber 23 and the storage compartment 22. One port of the second air supply air duct 401 is configured to form an air inlet 101, and the other port of the second air supply air duct 401 communicates with the first air supply air duct 301. Thus, the first air supply air duct 301 communicates with the evaporation chamber 23 through the second air supply air duct 401.

[0151] Along the height direction of the refrigerator, the second air supply part 400 is located above the evaporator 200, which is convenient for arranging the refrigeration fan 700 to drive the cold air in the evaporation chamber 23 into the storage compartment 22. The first air supply part 300 and the evaporator 200 are arranged along the depth direction of the refrigerator. The first air supply part 300 can directly introduce the cold air in the evaporation chamber 23 into the storage compartment 22 in front of the evaporator 200, which helps to improve the uniformity of the cold air distribution in the storage compartment 22.

[0152] On the side of the second air supply part 400 facing the evaporation chamber 23, an air inlet 101 is formed, and a refrigeration fan 700 is installed in the second air supply air duct 401. The refrigeration fan 700 and the air inlet 101 are opposite to each other along the depth direction of the refrigerator. The refrigeration fan 700 is configured to drive the cold air in the evaporation chamber 23 to enter the storage compartment 22 through the second air supply air duct 401, or to enter the storage compartment 22 through the second air supply air duct 401 and the first air supply air duct 301.

[0153] In some embodiments, the refrigeration fans 700 can be symmetrically installed in the second air supply air duct 401, so that the refrigeration fans 700 are symmetrically arranged with respect to the vertical middle plane of the air duct assembly 100. In this way, the left and right symmetry of the air duct assembly 100 is more stable. Among them, the vertical middle plane is perpendicular to the horizontal plane and the rear wall of the box body 10 and passes through the center of the air duct assembly 100.

[0154] In other embodiments, the refrigeration fans 700 are not centrally symmetrically installed. Combining the characteristics of the centrifugal fans, the air volume in the air ducts on both sides of the refrigeration fans 700 is more balanced.

[0155] Since part of the storage compartment 22 is located in front of the evaporator 200, if the air supply openings 103 are only provided in the second air supply part 400 above the evaporator 200, even if the cold air will sink, the temperature in the storage compartment 22 is still uneven. For this reason, the air duct assembly 100 is configured to form a plurality of air supply openings 103, and part of the air supply openings 103 are arranged at intervals along the height direction of the refrigerator (corresponding to Figure 8 the Z-axis direction in the figure) to improve the uniformity of the cold air distribution in the height direction of the storage compartment 22.

[0156] In some embodiments, along the width direction of the refrigerator, the width of the second air supply duct 401 is greater than that of the first air supply duct 301. The larger width of the second air supply duct 401 helps to ensure the air supply volume; the smaller width of the first air supply duct 301 helps to be embedded into the notch 201 of the evaporator 200, reducing the installation space occupied by the duct assembly 100 and the evaporator 200.

[0157] When the thickness of the first air supply duct 301 is less than 5 mm, the air volume loss is large. When the thickness of the first air supply duct 301 is greater than 40 mm, the increase in air volume is small and the installation space occupied is large. In some embodiments, the thickness of the first air supply duct 301, that is, the dimension of the first air supply duct 301 along the depth direction of the refrigerator, can be 5 mm to 40 mm. The thickness of the first air supply duct 301 can be 5 mm to 15 mm, 15 mm to 25 mm, 25 mm to 35 mm, 35 mm to 40 mm, etc. The thickness of the first air supply duct 301 can be 10 mm, 20 mm, 30 mm, etc.

[0158] Refer to Figure 8 , a plurality of air supply openings 103 include a first air supply opening 1031 and a second air supply opening 1032. The first air supply opening 1031 communicates the first air supply duct 301 with the storage compartment 22. It can be understood that a first air supply opening 1031 is provided on the side of the first air supply part 300 facing the storage compartment 22 so that the first air supply duct 301 communicates with the storage compartment 22. The second air supply opening 1032 communicates the second air supply duct 401 with the storage compartment 22. It can be understood that a second air supply opening 1032 is provided on the side of the second air supply part 400 facing the storage compartment 22 so that the second air supply duct 401 communicates with the storage compartment 22. The second air supply opening 1032 is located above the first air supply opening 1031.

[0159] Thus, the duct assembly 100 of the embodiment of the present application forms the first air supply duct 301 by providing the first air supply part 300, and conveys the cold air in the evaporation cavity 23 to the storage compartment 22; by providing the second air supply part 400 on the top of the first air supply part 300 to form the second air supply duct 401, the cold air in the evaporation cavity 23 is conveyed to the storage compartment 22, which not only helps to increase the air supply volume, but also the second air supply duct 401 provides an installation space for the refrigeration fan 700 to ensure air supply to the storage compartment 22.

[0160] The duct assembly 100 may further include a return air part 500, and the return air part 500 is connected to the bottom end of the first air supply part 300. The return air part 500 and the cavity wall of the accommodation cavity 21 of the box body 10 enclose a return air duct 501. Among them, in combination with Figure 3 , the return air part 500 and the bile wall of the box liner 20 enclose a return air duct 501.

[0161] In some embodiments, the evaporator 200 is configured to form a notch 201. For example, Figure 7 as shown, a notch 201 is formed on the side of the evaporator 200 facing away from the air duct assembly 100. As Figure 8 and Figure 9 shown, a notch 201 is formed on the side of the evaporator 200 facing the air duct assembly 100.

[0162] At least a part of the first air supply part 300 is embedded in the notch 201, and the projections of the first air supply part 300 and the evaporator 200 along the depth direction of the refrigerator (corresponding to the Figure 9 Y-axis direction in

[0163] towards the rear wall of the cabinet 10) at least partially overlap.

[0164] In this way, at least a part of the first air supply part 300 multiplexes the space of the evaporator 200 along the depth direction of the refrigerator, without additionally occupying the space in the depth direction of the refrigerator, which helps to save the space in the depth direction of the refrigerator, and further helps to increase the effective volume of the refrigerator. Figure 9 The projections of the first air supply part 300 and the evaporator 200 along the width direction of the refrigerator (corresponding to the

[0165] X-axis direction in Figure 10 towards the side wall of the cabinet 10) at least partially overlap, so that the first air supply part 300 can utilize the space of the notch 201 of the evaporator 200 without additionally occupying the space inside the empty cabinet liner 20, which helps to increase the effective volume of the refrigerator. Figure 6 and Figure 7 Referring to

[0166] In some possible implementation manners of the present application, a plurality of notches 201 are provided, and the plurality of notches 201 are spaced along the width direction of the refrigerator.

[0167] Correspondingly, a plurality of first air supply parts 300 are provided, and at least a part of each first air supply part 300 is embedded in one notch 201. A fitting recess 110 is formed between two adjacent first air supply parts 300.

[0168] The embodiment of the present application ensures the air supply volume of the storage compartment 22 and thus ensures the cooling effect by providing multiple first air supply parts 300; each first air supply part 300 is embedded in a notch 201, which helps to reduce the installation space occupied by the air duct assembly 100 and the evaporator 200.

[0169] Combination Figures 5 to 9 In some embodiments of the present application, two notches 201 are provided, and the two notches 201 are respectively provided on both sides of the evaporator 200 along the width direction of the refrigerator.

[0170] Two first air supply parts 300 are provided, and at least parts of the two first air supply parts 300 are respectively embedded in the two notches 201 .

[0171] Exemplarily, the two notches 201 are open toward one side of the air duct assembly 100, so that the first air supply portion 300 can be embedded in the space of the notches 201. The two notches 201 are open away from the side of the evaporator 200, so that the first air supply portion 300 can protrude from the side edge of the evaporator 200, which helps to ensure the air supply volume of the storage compartment 22.

[0172] The embodiment of the present application can ensure the air supply volume of the storage compartment 22 by providing two first air supply units 300, and can also avoid providing too many first air supply units 300 to occupy space. At least part of the two first air supply units 300 are respectively embedded in the notch 201, reducing the additional installation space required for the two first air supply units 300, so that at least part of the first air supply units 300 can reuse the space of the notch 201, which helps to increase the volume of the refrigerator.

[0173] In an embodiment of the present application, two notches 201 are respectively arranged on both sides of the evaporator 200 along the width direction of the refrigerator, so that the part of the evaporator 200 between the two notches 201 can form a whole, which helps to arrange the refrigerant pipe 210 and the fin 220 of the evaporator 200, and helps to simplify the structure of the evaporator 200.

[0174] like Figure 8 As shown, along the width direction of the refrigerator, the first air outlet 1031 is closer to the edge of the air duct assembly 100 than the second air outlet 1032. In this way, air outlets 103 at different heights and different horizontal positions are formed in the storage compartment 22, so as to realize three-dimensional air supply in the storage compartment 22 and improve the uniformity of the temperature in the storage compartment 22.

[0175] In some embodiments, along the width direction of the refrigerator, the distance between the two first air outlets 1031 is relatively large. By arranging the air guiding grille inside the first air outlet 1031, the air guiding grille can be inclined towards the middle of the air duct assembly 100, so that the first air outlet 1031 blows air towards the middle of the air duct assembly 100, improving the uniformity of the cold air in the width direction of the refrigerator.

[0176] In some possible implementation manners of the present application, in combination with Figure 9 , one side of the first air supply part 300 facing away from the middle of the evaporator 200 protrudes beyond the edge of the evaporator 200.

[0177] On both sides of the evaporator 200 along the width direction of the refrigerator, there are installation gaps with the side walls of the box body 10; and on both sides of the evaporator 200, there are also circuits of the heater 600, etc., so that there are certain gaps on both sides of the evaporator 200. Therefore, by extending the side of the first air supply part 300 facing away from the middle of the evaporator 200 outwards to protrude beyond the edge of the evaporator 200, not only can the gaps on both sides of the evaporator 200 be utilized, but also it helps to increase the cross-sectional area of the first air supply duct 301 to ensure the air supply volume. Among them, the first air supply duct 301 is cut by a plane perpendicular to the extending direction of the first air supply duct 301 to form the cross-section of the first air supply duct 301.

[0178] In some embodiments of the present application, in combination with Figure 13 , the air duct assembly 100 includes: an air duct front cover plate 120, the air duct front cover plate 120 faces the storage compartment 22, and the air duct front cover plate 120 is configured to form an air outlet 103.

[0179] The air duct front cover plate 120 and the wall of the accommodation cavity 21 enclose a return air duct 501, and the return air duct 501 communicates the storage compartment 22 with the evaporation cavity 23 to allow the air in the storage compartment 22 to flow back to the evaporation cavity 23.

[0180] The air duct assembly 100 may include an air duct rear cover plate 130, the air duct rear cover plate 130 faces the evaporation cavity 23; the air duct rear cover plate 130 is fixedly connected to the air duct front cover plate 120 to form a supply air duct 102.

[0181] Among them, the air duct rear cover plate 130 may include: a first plate portion 131, the first plate portion 131 is connected to the air duct front cover plate 120 and encloses a first air supply duct 301. Exemplarily, the edges of the first plate portion 131 and / or the air duct front cover plate 120 have flanges, so that there is a gap between the first plate portion 131 and the air duct front cover plate 120 along the depth direction of the refrigerator to enclose a first air supply duct 301.

[0182] The rear cover plate 130 of the air duct may include: a second plate portion 132, which is connected to the top end of the first plate portion 131, and the second plate portion 132 is connected to the front cover plate 120 of the air duct and encloses to form a second air supply duct 401. An air inlet 101 is provided on the second plate portion 132. Exemplarily, the second plate portion 132 and / or the front cover plate 120 of the air duct have flanges, so that there is a gap between the first plate portion 131 and the front cover plate 120 of the air duct in the depth direction of the refrigerator to enclose and form the second air supply duct 401.

[0183] Wherein, the first plate portion 131 and the part of the front cover plate 120 of the air duct that forms the first air supply duct 301 form a first air supply part 300. A first air supply opening 1031 is provided on the part of the front cover plate 120 that forms the first air supply duct 301.

[0184] The second plate portion 132 and the part of the front cover plate 120 of the air duct that forms the second air supply duct 401 form a second air supply part 400. A second air supply opening 1032 is provided on the part of the front cover plate 120 that forms the second air supply duct 401.

[0185] Exemplarily, the first plate portion 131 and the second plate portion 132 are integrally formed into one piece, so that the structure of the rear cover plate 130 of the air duct is stable.

[0186] The front cover plate 120 of the air duct and the rear cover plate 130 of the air duct can be snap-connected, and the connection method is simple and reliable.

[0187] When the air duct assembly 100 includes a plurality of first air supply parts 300, there are a plurality of first plate portions 131, which enclose with the front cover plate 120 of the air duct to form a plurality of first air supply parts 300.

[0188] The part of the front cover plate 120 located between two first plate portions 131 forms a mating recess 110.

[0189] In some embodiments, the air duct assembly 100 may further include a heat insulation member 140, which is disposed between the front cover plate 120 of the air duct and the rear cover plate 130 of the air duct to improve the heat insulation performance of the air duct assembly 100 and prevent the items in the storage compartment 22 from coming into contact with the evaporator 200 through the air duct assembly 100 and being supercooled.

[0190] In the embodiments of the present application, the air duct assembly 100 encloses to form an air supply duct 102 through the front cover plate 120 of the air duct and the rear cover plate 130 of the air duct. The rear cover plate 130 of the air duct is connected to the front cover plate 120 of the air duct by providing the first plate portion 131 to enclose and form the first air supply duct 301; the rear cover plate 130 of the air duct is connected to the front cover plate 120 of the air duct by providing the second plate portion 132 to enclose and form the second air supply duct 401. The air duct assembly 100 in the embodiments of the present application has a simple structure.

[0191] In some embodiments of the present application, in combination with Figure 14 , a first air guiding rib 410 is provided in the second air supply duct 401. The first air guiding rib 410 is generally in an inverted V shape. The first air guiding rib 410 includes a first rib 411 and a second rib 412. The first rib 411 extends obliquely from the top end of one of the first air supply ducts 301 towards the air inlet 101. One end of the second rib 412 is connected to the first rib 411, and the other end of the second rib 412 extends towards the top end of the other first air supply duct 301 after passing below the air inlet 101. With such a setting, both ends of the first air guiding rib 410 extend to the top ends inside the two first air supply ducts 301, which helps to increase the air output of the first air supply ducts 301, reduce the vortex travel in the ducts, and improve the heat exchange efficiency.

[0192] In some embodiments, a through opening 106 is provided at the top end of the air duct assembly 100 to supply cold air to the refrigerating compartment of the refrigerator. A second air guiding rib 420 is also provided in the second air supply duct 401. The second air guiding rib 420 is generally in a V shape, so that part of the cold air in the second air supply duct 401 can enter the through opening 106 under the guidance of the second air guiding rib 420 and then enter the refrigerating compartment to ensure the air volume of the refrigerating compartment.

[0193] One end of the second air guiding rib 420 is located on one side of the through opening 106. After the other end of the second air guiding rib 420 extends downward and then upward, a V-shaped air guiding rib is formed.

[0194] The second air guiding rib 420 and the first air guiding rib 410 are respectively located on both sides of the vertical center line of the air duct assembly 100, which is convenient for the refrigeration fan 700 of the centrifugal fan type to send air outward.

[0195] In combination with Figure 15 , for Figure 10 the flow field simulation diagram of the middle air duct assembly 100. As shown in Figure 15 , the flow field of the cold air in the air supply duct 102 is relatively smooth, without vortices or eddy currents. It shows that the cold air flows relatively smoothly, which helps to ensure the air supply efficiency.

[0196] In the embodiments of the present application, both the first air guiding rib 410 and the second air guiding rib 420 are provided on the air duct rear cover plate 130, and the first air guiding rib 410 and the second air guiding rib 420 are respectively in contact with the air duct front cover plate 120 to define the shape of the second air supply duct 401. This is not restrictive. At least one of the first air guiding rib 410 and the second air guiding rib 420 can be provided on the air duct front cover plate 120.

[0197] In combination with Figure 5 and Figure 16, in some embodiments of the present application, the evaporator 200 includes a plurality of refrigerant pipes 210 and a plurality of fins 220 disposed outside the refrigerant pipes 210. The fins 220 increase the contact area between the evaporator 200 and the air to increase the heat exchange area. The refrigerant pipes 210 provide a path for the refrigerant flow, and the refrigerant pipes 210 may extend in an S shape. The refrigerant pipes 210 include straight pipe sections and bent pipe sections, and the bent pipe sections connect two adjacent straight pipe sections. The bent pipe sections may be U-shaped.

[0198] The evaporator 200 may further include at least two end plates 270, and the at least two end plates 270 are respectively located at both ends of the refrigerant pipes 210 to support the refrigerant pipes 210. The heater 600 located below the evaporator 200 may be installed on the end plates 270.

[0199] The bent pipe portions of the refrigerant pipes 210 and the circuit structure of the heater 600 are arranged on both sides of the evaporator 200 in the width direction of the refrigerator, so that the wind resistance on both sides of the evaporator 200 is small, resulting in poor heat exchange effect because the cold air easily flows upward from both sides of the evaporator 200. Therefore, in some embodiments of the present application, wind blocking members 230 are provided on both sides of the evaporator 200 in the width direction of the refrigerator to increase the wind resistance on both sides of the evaporator 200, so that the cold air passes through the fins 220 of the evaporator 200 as much as possible for heat exchange, which helps to improve the heat exchange effect.

[0200] Exemplarily, the wind blocking members 230 may be provided at the bent pipe portions or the end plates 270 on both sides of the evaporator 200.

[0201] Exemplarily, the wind blocking members 230 may be provided on the circuit structure of the heater 600 on both sides of the evaporator 200.

[0202] In some embodiments of the present application, multiple layers of wind blocking members 230 are arranged at intervals along the height direction of the evaporator 200 (corresponding to the Figure 16 Z-axis direction in

[0203] to increase the wind resistance on both sides of the evaporator 200. Figure 5 and Figure 16 , in some embodiments of the application, when observing the evaporator 200 from the top view of the box body 10, along the width direction of the refrigerator, the length of some of the refrigerant pipes 210 is shorter than the length of the other part of the refrigerant pipes 210 to form a notch 201.

[0204] Wherein, the length of the refrigerant pipe 210 is the dimension of the refrigerant pipe 210 along the width direction of the refrigerator.

[0205] The evaporator 200 may include multiple layers of refrigerant pipes 210 and a plurality of fins 220 disposed outside the multiple layers of refrigerant pipes 210; the multiple layers of refrigerant pipes 210 are arranged at intervals in the depth direction of the refrigerator. One layer of refrigerant pipes 210 close to the air duct assembly 100 is missing a part in the width direction of the refrigerator relative to one layer of refrigerant pipes 210 close to the rear wall of the cabinet body, so as to form a notch 201.

[0206] Exemplarily, the evaporator 200 may include a first layer of refrigerant pipes 211 and a second layer of refrigerant pipes 212, and the first layer of refrigerant pipes 211 and the second layer of refrigerant pipes 212 are arranged at intervals in the depth direction of the refrigerator. The first layer of refrigerant pipes 211 is close to the air duct assembly 100, and the second layer of refrigerant pipes 212 is close to the rear wall of the cabinet body. The length of the first layer of refrigerant pipes 211 is less than the length of the second layer of refrigerant pipes 212, so as to form a notch 201.

[0207] In the width direction of the refrigerator, both ends of the second layer of refrigerant pipes 212 protrude from both ends of the first layer of refrigerant pipes 211 respectively, so that both ends of the first layer of refrigerant pipes 211 are shorter than both ends of the second layer of refrigerant pipes 212, so as to form notches 201 at both ends of the first layer of refrigerant pipes 211. In short, a part is missing at both ends of the first layer of refrigerant pipes 211, so that the first layer of refrigerant pipes 211 is shorter than the second layer of refrigerant pipes 212, so as to form a notch 201.

[0208] In some embodiments of the present application, the evaporator 200 may include four end plates 270. One end plate 270 is disposed at each of the two ends of the first layer of refrigerant pipes 211, and one end plate 270 is disposed at each of the two ends of the second layer of refrigerant pipes 212, so that the structural stability of the evaporator 200 can be improved. Moreover, the four end plates 270 are all connected to the heater 600, so that the installation of the heater 600 is more secure, ensuring that there is a certain distance between the heater 600 and the bile wall at its bottom, and preventing the temperature of the bile wall at its bottom from being too high during defrosting

[0209] Combined with Figures 17a to 17f , in the width direction of the refrigerator, the wind speeds on both sides of the return air duct 501 are relatively low, and the wind speed in the middle is relatively high, resulting in inconsistent return air speeds in the width direction of the evaporation chamber 23, which is not conducive to the uniform heat exchange of the evaporator 200.

[0210] For this reason, in the embodiments of the present application, by setting the fin distribution density of the evaporator 200, the fin distribution density on both sides in the width direction of the evaporator 200 is small, while the fin distribution density in the middle is large, so as to balance the return air speeds in each area of the evaporator 200.

[0211] Combined with Figure 16, in some embodiments, a first heat exchange area 240 and two second heat exchange areas 250 are formed at the bottom of the evaporator 200; along the width direction of the refrigerator, the first heat exchange area 240 is located between the two second heat exchange areas 250; wherein, the fin distribution density of the first heat exchange area 240 is greater than that of the second heat exchange area 250.

[0212] The fin distribution density is the number of fins 220 per unit area. The fin distribution density of the first heat exchange area 240 is greater than that of the fins 220 in the second heat exchange area 250, making the fins 220 in the first heat exchange area 240 relatively dense, while the fins 220 in the second heat exchange area 250 are relatively sparse, thus making the air resistance of the first heat exchange area 240 greater than that of the second heat exchange area 250.

[0213] In this way, by adjusting the distribution density of the fins 220, the adjustment of the air flow resistance by the fins 220 can be achieved. The greater the density of the fins 220, the greater the resistance to air. Specifically, the adjustment of the air flow resistance can be achieved by adjusting the number of fins 220 or the distance between two adjacent fins 220.

[0214] Through the above settings, the second heat exchange areas 250 are arranged on both sides of the evaporator 200. The air resistance of the second heat exchange areas 250 is small, and more air with a lower wind speed on both sides of the return air duct 501 enters the second heat exchange areas 250; the first heat exchange area 240 is arranged in the middle of the evaporator 200. The air resistance of the first heat exchange area 240 is large, and more air with a higher wind speed in the middle of the return air duct 501 enters the first heat exchange area 240. In this way, the return air speed of the evaporator 200 can be made consistent along the width direction of the refrigerator, enabling the evaporator 200 to exchange heat evenly, which helps to reduce energy consumption; it can also make the frosting of the evaporator 200 relatively consistent, which helps to shorten the defrosting time.

[0215] In some possible implementation manners of the present application, along the width direction of the refrigerator, there is a gap between the end plate 270 of the first layer of refrigerant pipes 211 and the end plate 270 of the second layer of refrigerant pipes 212. A third heat exchange area 260 is formed between the end plate 270 of the first layer of refrigerant pipes 211 and the end plate 270 of the second layer of refrigerant pipes 212. The third heat exchange area 260 is located above the second heat exchange area 250. The fin distribution density of the third heat exchange area 260 is less than that of the first heat exchange area 240, making the wind resistance on both sides in the width direction of the evaporator 200 relatively low, which helps the air with a lower wind speed on both sides of the return air duct to pass through the evaporator 200 for heat exchange and balance the wind speed in the width direction of the evaporator 200.

[0216] In the above embodiments, taking the notches 201 formed at both ends of the evaporator 200 in the width direction as an example for illustration, the structure of the evaporator 200 provided with one notch 201 will be described below with reference to the accompanying drawings.

[0217] Referring to Figure 18 and Figure 19 , in some possible implementation manners of the present application, there is one notch 201, which is located in the middle of the evaporator 200 along the width direction of the refrigerator.

[0218] There is one first air supply part 300, which is embedded in the notch 201.

[0219] With such a setting, it helps to simplify the structure of the air duct assembly 100; and through the air supply of one first air supply part 300, the cold air is more concentrated during the air supply process, and the air resistance is smaller, which helps to reduce the loss during the cold air transportation process.

[0220] In some embodiments, the notch 201 is symmetrically arranged with respect to the vertical middle plane of the evaporator 200; the vertical middle plane of the evaporator 200 is perpendicular to the horizontal plane and perpendicular to the rear side wall of the box body 10. In this way, the structure of the evaporator 200 is symmetric, which helps to improve the heat exchange balance in the width direction of the evaporator 200.

[0221] Correspondingly, the first air supply part 300 is symmetrically arranged with respect to the vertical middle plane of the air duct assembly 100. In this way, it helps to improve the symmetry of the air duct assembly 100 and makes the structure more stable.

[0222] Referring to Figure 18 , the first air supply port 1031 is arranged in the middle of the air duct front cover plate 120, and the second air supply port 1032 is arranged on both sides of the air duct front cover plate 120. The air guide grating bars inclined to both sides can be arranged in the first air supply port 1031, so that the first air supply port 1031 supplies air towards both sides of the air duct front cover plate 120, improving the uniformity of the cold air distribution in the storage compartment 22.

[0223] In some embodiments of the present application, the middle missing part of the first layer of refrigerant pipes 211 forms the notch 201. In this way, the first layer of refrigerant pipes 211 is divided into two parts along the width direction of the evaporator 200, and the sum of the lengths of these two parts is less than the length of the second layer of refrigerant pipes 212, so that the first layer of refrigerant pipes 211 forms the notch 201.

[0224] Combined with Figure 20 , the air duct front cover plate 120 forms concave matching parts on both sides of the first air supply part 300, so that the two parts of the first layer of refrigerant pipes 211 are embedded in the two concave matching parts, realizing the concave-convex matching between the evaporator 200 and the air duct assembly 100.

[0225] Combined with Figure 21, a third air guiding rib 430 is arranged in the second air supply air duct 401, and the third air guiding rib 430 includes a connected first arc rib 431 and a second arc rib 432.

[0226] The first arc rib 431 is located above the second arc rib 432. The first arc rib 431 is recessed toward the outside of the second air supply air duct 401, and the first end of the first arc rib 431 is connected to the second arc rib 432. The second end of the first arc rib 431 is farther from the air inlet 101 than the first end. The connection between the first arc rib 431 and the second arc rib 432 is an arc transition connection to reduce the air resistance of the second air supply air duct 401.

[0227] The second arc rib 432 is recessed toward the outside of the second air supply air duct 401, and the end of the second arc rib 432 away from the first arc rib 431 extends toward the side away from the air inlet 101.

[0228] In some embodiments, two third air guiding ribs 430 are arranged, symmetrically disposed on both sides of the air inlet 101 along the width direction of the refrigerator, so that the second air supply air duct 401 is symmetrically arranged with respect to the air inlet 101.

[0229] In some embodiments of the present application, at the top of the first air supply air duct 301, fourth air guiding ribs 440 are respectively formed on both sides along the width direction of the refrigerator. The top ends of the fourth air guiding ribs 440 are connected to the bottom ends of the second arc ribs 432.

[0230] Along the height direction of the refrigerator from top to bottom, the interval between the two fourth air guiding ribs 440 gradually decreases, so that the second air supply air duct 401 and the first air supply air duct 301 are smoothly transitioned, which helps to reduce the air resistance and improve the smoothness of the cold air flow. Moreover, the inclined fourth air guiding ribs 440 help to improve the downward convergence and discharge of water droplets.

[0231] Exemplarily, the inclination angle α of the first air guiding rib 410 relative to the horizontal plane can be greater than or equal to 5°, to avoid setting too small an inclination angle which is not conducive to the convergence of water droplets. Of course, the inclination angle α cannot be set too large, which affects the easiness of the air supply air duct 102 and thus affects the air supply volume.

[0232] In the embodiments of the present application, both the third air guiding rib 430 and the fourth air guiding rib 440 are arranged on the air duct rear cover plate 130, and the third air guiding rib 430 and the fourth air guiding rib 440 are respectively in contact with the air duct front cover plate 120 to define the shape of the air supply air duct 102. This is not restrictive, and at least one of the third air guiding rib 430 and the fourth air guiding rib 440 can be arranged on the air duct front cover plate 120.

[0233] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0234] For the sake of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussions are not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. According to the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A refrigerator, characterized in that, include: The box body is structured to form a receiving cavity with a take-in and put-out opening; an air duct assembly installed in the accommodating cavity and dividing the accommodating cavity into an evaporation cavity and a storage compartment along the depth direction of the refrigerator; the storage compartment is located on one side of the access opening; the air duct assembly includes a first air supply portion, the first air supply portion is structured to form a first air supply duct for cold air in the evaporation cavity to flow into the storage compartment; an evaporator, installed in the evaporation chamber; A notch is formed on one side of the evaporator facing the air duct assembly; At least a portion of the first air supply portion is embedded in the notch, and projections of the first air supply portion and the evaporator along the depth direction of the refrigerator toward the rear wall of the box body at least partially overlap.

2. The refrigerator according to claim 1, wherein There are a plurality of notches, and the plurality of notches are spaced apart along the width direction of the refrigerator; A plurality of the first air supply parts are provided, and at least a portion of each of the first air supply parts is embedded in one of the notches; or; The notch is provided with one and is located in the middle of the evaporator along the width direction of the refrigerator; the first air supply part is provided with one and is embedded in the notch.

3. The refrigerator according to claim 2, characterized in that, There are two notches, and the two notches are respectively arranged on both sides of the evaporator along the width direction of the refrigerator; Two first air supply parts are provided, and at least parts of the two first air supply parts are respectively embedded in the two notches.

4. The refrigerator according to claim 3, characterized in that, The evaporator includes a refrigerant tube and a plurality of fins arranged outside the refrigerant tube; The bottom of the evaporator forms a first heat exchange area and two second heat exchange areas; along the width direction of the refrigerator, the first heat exchange area is located between the two second heat exchange areas; wherein the fin distribution density of the first heat exchange area is greater than the fin distribution density of the second heat exchange area.

5. The refrigerator according to claim 3, characterized in that, Along the width direction of the refrigerator, a side of the first air supply portion facing away from the middle of the evaporator protrudes from the edge of the evaporator.

6. The refrigerator according to any one of claims 1-5, characterized in that, The air duct assembly also includes a second air supply part connected to the top of the first air supply part, the second air supply part is structured to form a second air supply duct, a refrigeration fan is installed in the second air supply duct, and the refrigeration fan is configured to drive the cold air in the evaporation chamber to enter the storage compartment through the second air supply duct, or to enter the storage compartment through the second air supply duct and the first air supply duct.

7. The refrigerator according to claim 6, wherein, The air duct assembly comprises: The front cover plate of the air duct faces the storage compartment, and the front cover plate of the air duct is structured to form an air supply port; the front cover plate of the air duct and the cavity wall of the accommodating cavity are enclosed to form a return air duct, and the return air duct connects the storage compartment and the evaporation cavity so that the air in the storage compartment flows back to the evaporation cavity; The rear cover plate of the air duct faces the evaporation chamber; the rear cover plate of the air duct comprises: A first plate portion, the first plate portion is connected to the air duct front cover plate and encloses the first air supply duct to form; A second plate portion is connected to the top end of the first plate portion, and the second plate portion is connected to the front cover plate of the air duct to enclose and form the second air supply duct; Wherein, the first plate portion and the front cover plate of the air duct form a part of the first air supply duct to form the first air supply portion; the second plate portion and the front cover plate of the air duct form a part of the second air supply duct to form the second air supply portion.

8. A refrigerator, characterized in that, Comprising: A box body, wherein a storage compartment and an evaporation chamber are arranged inside the box body; an evaporator is installed in the evaporation chamber; an air duct assembly is arranged between the evaporation chamber and the storage compartment; The air duct assembly includes a first air supply portion, and the first air supply portion is configured to form a first air supply duct for cold air in the evaporation chamber to flow into the storage compartment; The evaporator is configured to form a notch; At least a part of the first air supply portion is embedded into the notch, and the projections of the first air supply portion and the evaporator along the depth direction of the refrigerator towards the rear wall of the box body at least partially overlap; The air duct assembly forms a matching concave portion outside the area of the first air supply portion; a part of the evaporator outside the notch is embedded into the matching concave portion.

9. A refrigerator, characterized in that, Comprising: A box body, wherein a storage compartment is arranged inside the box body; An evaporator for generating cold; An air duct assembly for sending the cold generated by the evaporator into the storage compartment; Viewing the evaporator from a top view of the box body, the evaporator presents a substantially rectangular shape with at least one notch; At least a part of the air duct assembly is located in the space of the notch.

10. The refrigerator according to claim 9, characterized in that, The evaporator includes a plurality of refrigerant pipes and a plurality of fins arranged outside the plurality of refrigerant pipes; Viewing the evaporator from a top view of the box body, along the width direction of the refrigerator, the lengths of some of the refrigerant pipes are shorter than those of other refrigerant pipes to form the notch.

11. A refrigerator, characterized in that, Comprising: A box body, wherein a storage compartment is arranged inside the box body; An evaporator for generating cold; An air duct assembly for sending the cold generated by the evaporator into the storage compartment; Wherein, the evaporator is configured to form a notch; at least a part of the air duct assembly is located in the space of the notch; The projections of the air duct assembly and the evaporator along the depth direction of the refrigerator towards the rear wall of the box body partially overlap; the projections of the air duct assembly and the evaporator along the width direction of the refrigerator towards the side wall of the box body partially overlap.

12. A refrigerator, characterized in that, Comprising: A box body provided with a storage compartment; An air duct assembly for sending cold to the storage compartment; An evaporator located between the air duct assembly and the rear wall of the box body, and the evaporator has at least two thicknesses, and the thickness refers to the dimension along the depth direction of the box body.

13. The refrigerator according to claim 12, wherein, The part of the evaporator with a smaller thickness forms a notch, and at least a part of the air duct assembly is located in the notch.

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