Refrigerator

Abstract

The embodiment of the invention provides a refrigerator. The refrigerator comprises a refrigerating chamber, a refrigerating air duct assembly, a refrigerating fan, an air return air duct assembly and an evaporator chamber. According to the refrigerator provided by the embodiment of the invention, the refrigeration fan is arranged, the air inlet end of the refrigeration fan is arranged towards the refrigeration return air inlet, and the air outlet end of the refrigeration fan is arranged towards the return air inlet of the return air duct, so that hot and humid air in the refrigeration chamber can be sucked into the return air duct through the refrigeration return air inlet by utilizing the refrigeration fan; the air return efficiency is improved, the speed of low-temperature air in the evaporator chamber flowing to the refrigeration air duct is correspondingly increased, and therefore the refrigeration speed of the refrigeration chamber can be increased.

Description

Technical Field

[0001] The present application relates to the field of household appliances, and in particular to a refrigerator. Background Art

[0002] The principle of an air-cooled refrigerator is to use air for cooling. When high-temperature air flows through the built-in evaporator, due to the high air temperature and low evaporator temperature, the two directly exchange heat, the air temperature will drop, and cold air will be blown into the refrigerator. The temperature of the refrigerator is lowered through this continuous circulation method.

[0003] As people's living standards improve, users increasingly hope that refrigerators have larger volumes and storage spaces. To meet user needs, the height of refrigerators is generally designed to be 1900mm, or even higher.

[0004] In the single-system refrigerators commonly found on the market, the refrigeration evaporator and refrigeration fan are generally located at the rear of the freezer compartment, and the refrigerator compartment is located above the freezer compartment. When the height of the refrigerator is relatively high, the distance between the air outlet of the refrigerator compartment and the refrigeration fan will be far, resulting in a slower refrigeration speed in the refrigerator compartment. Summary of the invention

[0005] Based on this, an embodiment of the present application provides a refrigerator.

[0006] The present application provides a refrigerator, comprising:

[0007] Cold room;

[0008] A refrigeration air duct assembly, the refrigeration air duct assembly is arranged at one side of the refrigeration chamber, the refrigeration air duct assembly has a refrigeration air duct and a refrigeration return air outlet, wherein the refrigeration air duct has a refrigeration air inlet and a refrigeration air outlet, and the refrigeration air outlet and the refrigeration return air outlet are both connected to the refrigeration chamber;

[0009] A refrigeration fan, the refrigeration fan having an air inlet end and an air outlet end, the air inlet end of the refrigeration fan being arranged toward the refrigeration return air outlet;

[0010] A return air duct assembly, wherein the return air duct assembly has a return air duct, wherein the return air duct has a return air inlet and a return air outlet, and the return air inlet is arranged toward the air outlet end of the refrigeration fan;

[0011] An evaporator chamber is provided with an evaporator, and the refrigeration air inlet of the refrigeration air duct and the return air outlet of the return air duct are both connected to the evaporator chamber.

[0012] In some embodiments, the refrigerated air duct assembly includes a thermal insulation cover plate, a refrigerated air duct plate and a first air duct cover plate, wherein the refrigerated air duct plate is arranged between the first air duct cover plate and the thermal insulation cover plate, the first air duct cover plate is arranged close to the refrigerated chamber, the refrigerated air duct is provided on the side of the refrigerated air duct plate facing the thermal insulation cover plate, the refrigerated return air outlet is provided on the first air duct cover plate, and the refrigerated return air outlet passes through the side of the first air duct cover plate facing the refrigerated chamber and the side facing the thermal insulation cover plate.

[0013] In some embodiments, the refrigeration air duct plate is further provided with a second air inlet cavity, one end of the second air inlet cavity is connected to the refrigeration air duct, and the other end is arranged toward the air outlet end of the refrigeration fan; and / or,

[0014] The refrigerated air duct plate is also provided with a accommodating cavity, which is arranged corresponding to the refrigerated return air outlet. The accommodating cavity passes through the side of the refrigerated air duct plate facing the thermal insulation cover plate and the side facing the first air duct cover plate, and the refrigerated fan is arranged in the accommodating cavity.

[0015] In some embodiments, one end of the second air inlet cavity facing away from the refrigeration air duct is connected to the accommodating cavity, and a first air gate is provided at at least one position inside the second air inlet cavity, at the connection between the second air inlet cavity and the refrigeration air duct, and at the connection between the second air inlet cavity and the accommodating cavity. The first air gate is used to control the opening and closing of the second air inlet cavity and to control the flow of gas from the air outlet end of the refrigeration fan to the refrigeration air duct.

[0016] In some embodiments, the return air duct assembly includes a return air duct plate and a second air duct cover plate, the return air duct plate includes a main body, the main body is arranged on the side of the refrigeration air duct plate away from the first air duct cover plate, the return air inlet, the return air outlet and the return air duct are provided on the main body, the return air inlet and the return air outlet both pass through the side of the main body facing the refrigeration air duct plate and the side away from the refrigeration air duct plate, the return air duct is provided on the side of the main body away from the refrigeration air duct plate, and the second air duct cover plate is provided on the side of the main body where the return air duct is provided.

[0017] In some embodiments, the refrigerator further comprises a freezing chamber and a freezing air duct assembly, wherein the freezing air duct assembly is disposed on one side of the freezing chamber;

[0018] The freezing air duct assembly comprises a freezing air duct, wherein the freezing air duct comprises a freezing air inlet and a first freezing air outlet, wherein the freezing air inlet is connected to the evaporator chamber, and the first freezing air outlet is connected to the freezing chamber;

[0019] A refrigeration fan is provided in the refrigeration air duct near the refrigeration air inlet, and the refrigeration fan is used to suck the gas in the evaporator chamber into the refrigeration air duct.

[0020] In some embodiments, the freezing air duct also has a second freezing air outlet, the second freezing air outlet is connected to the refrigeration air inlet of the refrigeration air duct, and a second air gate is provided between the second freezing air outlet and the refrigeration air inlet of the refrigeration air duct, the second air gate is used to control whether the gas in the freezing air duct enters the refrigeration air duct and to control the flow rate of gas entering the refrigeration air duct from the freezing air duct.

[0021] In some embodiments, the freezing air duct assembly includes a freezing air duct plate and a third air duct cover plate, the third air duct cover plate is arranged close to the freezing chamber, the freezing air duct plate and the third air duct cover plate together enclose the freezing air duct, the third air duct cover plate is provided with the first freezing air outlet, the first freezing air outlet passes through a side of the third air duct cover plate close to the freezing chamber and a side close to the freezing air duct plate.

[0022] In some embodiments, the refrigerator further comprises a refrigerating box, and the refrigerating air duct assembly and the refrigerating chamber are both arranged in the inner cavity of the refrigerating box; and / or,

[0023] The refrigerator further comprises a freezing chamber, wherein the evaporator chamber, the freezing air duct assembly and the freezing chamber are all arranged in an inner cavity of the freezing chamber.

[0024] In some embodiments, the return air duct plate further includes a connecting portion, the connecting portion is connected to the body, the connecting portion is arranged between the refrigerator liner and the freezer liner, an air inlet channel is enclosed between the connecting portion and the second air duct cover plate, the air inlet channel is connected to the second freezing air outlet of the freezing air duct and the refrigeration air inlet of the refrigeration air duct, and the second air door is arranged in the air inlet channel; and / or,

[0025] The evaporator is arranged between the freezing air duct assembly and the freezing chamber, and the freezing air duct assembly and the freezing chamber together enclose the evaporator chamber; and / or,

[0026] The body of the return air duct plate is arranged on the outside of the refrigerator liner and the outside of the freezer liner, the refrigerator liner is provided with a return air outlet corresponding to the accommodating cavity, the freezer liner is provided with a return air inlet, the return air inlet on the body corresponds to the return air outlet on the refrigerator liner, and the return air outlet on the body corresponds to the return air inlet on the freezer liner.

[0027] The refrigerator provided in the embodiment of the present application is provided with a refrigeration fan, and the air inlet end of the refrigeration fan is arranged toward the refrigeration return air outlet, and the air outlet end of the refrigeration fan is arranged toward the return air inlet of the return air duct. Therefore, the refrigeration fan can be used to suck the hot and humid air in the refrigeration chamber into the return air duct through the refrigeration return air outlet, thereby accelerating the return air efficiency, and correspondingly also accelerating the speed at which the low-temperature gas in the evaporator chamber flows to the refrigeration air duct, thereby improving the refrigeration speed of the refrigeration chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments.

[0029] Figure 1 This is a schematic structural diagram of a refrigerator from a first perspective provided in an embodiment of the present application.

[0030] Figure 2 A schematic structural diagram of a refrigerator from a second perspective provided in an embodiment of the present application.

[0031] Figure 3 A schematic diagram of the first partial structure of the refrigerator provided in an embodiment of the present application.

[0032] Figure 4 A schematic diagram of the second partial structure of the refrigerator provided in an embodiment of the present application.

[0033] Figure 5 This is a schematic diagram of the third partial structure of the refrigerator provided in an embodiment of the present application.

[0034] Figure 6 A schematic structural diagram of a refrigeration air duct assembly from a first perspective provided in an embodiment of the present application.

[0035] Figure 7 A schematic structural diagram of the refrigeration air duct assembly from a second perspective provided in an embodiment of the present application.

[0036] Figure 8 A schematic diagram of the explosion and decomposition of a refrigeration air duct assembly provided in an embodiment of the present application.

[0037] Fig. 9 A schematic structural diagram of a refrigeration air duct assembly from a first perspective provided in an embodiment of the present application.

[0038] Fig.10 A schematic structural diagram of a refrigeration air duct assembly from a second perspective provided in an embodiment of the present application.

[0039] Fig.11 A schematic diagram of the explosion and decomposition of a refrigeration air duct assembly provided in an embodiment of the present application.

[0040] Component Symbols:

[0041] 100, refrigerator; 30, refrigeration duct assembly; 31, insulation cover; 32, refrigeration duct plate; 321, refrigeration duct; 301, refrigeration air inlet; 302, refrigeration air outlet; 322, second air inlet cavity; 323, accommodating cavity; 33, first duct cover; 331, refrigeration return air outlet; 34, refrigeration duct rear cover; 41, refrigeration fan; 42, refrigeration fan; 50, return air duct assembly; 51, return air duct plate; 511, body; 501, return air duct; 502, return air inlet Air vent; 503, return air outlet; 512, connecting part; 52, second air duct cover; 60, evaporator chamber; 61, evaporator; 70, freezing air duct assembly; 71, freezing air duct plate; 702, freezing air inlet; 703, first freezing air outlet; 704, second freezing air outlet; 72, third air duct cover; 73, supporting plate; 10, refrigerator liner; 11, refrigerator compartment; 12, return air outlet; 20, freezing liner; 21, freezing compartment; 22, return air inlet; 81, second air door. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only 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 skilled in the art without making creative work are within the scope of protection of this application.

[0043] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0045] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0047] See also Figures 1 to 5 An embodiment of the present application provides a refrigerator 100 including a refrigerating chamber 11, a refrigerating air duct assembly 30, a refrigerating fan 41, a return air duct assembly 50 and an evaporator chamber 60.

[0048] See also Figure 1 , Figure 7 and Figure 8 The refrigeration air duct assembly 30 is arranged on one side of the refrigeration chamber 11, and the refrigeration air duct assembly 30 has a refrigeration air duct 321 and a refrigeration return air port 331, wherein the refrigeration air duct 321 has a refrigeration air inlet 301 and a refrigeration air outlet 302, and the refrigeration air outlet 302 and the refrigeration return air port 331 are both connected to the refrigeration chamber 11.

[0049] See also Figures 5 to 8 The refrigeration fan 41 has an air inlet end and an air outlet end, and the air inlet end of the refrigeration fan 41 is arranged toward the refrigeration return air port 331.

[0050] See also Figure 5 The return air duct assembly 50 has a return air duct 501 , and the return air duct 501 has a return air inlet 502 and a return air outlet 503 . The return air inlet 502 is arranged toward the air outlet end of the refrigeration fan 41 .

[0051] See also Figure 5An evaporator 61 is disposed in the evaporator chamber 60 , and the refrigeration air inlet 301 of the refrigeration air duct 321 and the return air outlet 503 of the return air duct 501 are both connected to the evaporator chamber 60 .

[0052] It is understandable that the refrigerator 100 is generally divided into a single-system refrigerator and a dual-system refrigerator, wherein the refrigeration of the refrigerating chamber 11 and the refrigerating chamber 21 in the single-system refrigerator 100 share an evaporator 61, and the refrigeration of the refrigerating chamber 11 in the dual-system refrigerator 100 corresponds to one evaporator 61, and the refrigeration of the freezing chamber 21 corresponds to another evaporator 61, so that the refrigerating chamber 11 and the freezing chamber 21 both realize independent circulation refrigeration. The refrigerator 100 of the embodiment of the present application can be a single-system refrigerator or a dual-system refrigerator.

[0053] It is understandable that the low-temperature gas can enter the refrigeration air duct 321 through the refrigeration air inlet 301 and enter the refrigeration chamber 11 through the refrigeration air outlet 302 .

[0054] The refrigerator 100 provided in the embodiment of the present application is provided with a refrigeration fan 41, and the air inlet end of the refrigeration fan 41 is arranged toward the refrigeration return air port 331, and the air outlet end of the refrigeration fan 41 is arranged toward the return air inlet 502 of the return air duct 501, so that the refrigeration fan 41 can be used to suck the hot and humid air in the refrigeration chamber 11 into the return air duct 501 through the refrigeration return air port 331, thereby accelerating the return air efficiency, and correspondingly also accelerating the speed at which the low-temperature gas in the evaporator chamber 60 flows to the refrigeration air duct 321, thereby improving the refrigeration speed of the refrigeration chamber 11.

[0055] See also Figure 8 The refrigeration air duct assembly 30 includes a heat preservation cover plate 31, a refrigeration air duct plate 32 and a first air duct cover plate 33, wherein the refrigeration air duct plate 32 is arranged between the first air duct cover plate 33 and the heat preservation cover plate 31, the first air duct cover plate 33 is arranged close to the refrigeration chamber 11, the refrigeration air duct plate 32 is provided with the refrigeration air duct 321 on the side facing the heat preservation cover plate 31, the first air duct cover plate 33 is provided with the refrigeration return air port 331, and the refrigeration return air port 331 runs through the first air duct cover plate 33 on the side facing the refrigeration chamber 11 and the side facing the heat preservation cover plate 31.

[0056] See also Figure 8 , illustratively, the refrigeration air duct 321 is formed on the refrigeration air duct plate 32 in the form of a groove.

[0057] See also Figure 7 and Figure 8 For example, a filter is provided on the refrigerated air return port 331 to prevent impurities in the refrigerating chamber 11 from entering the air duct system.

[0058] See also Figure 8 Exemplarily, the refrigerated air outlet 302 is formed at an edge of a side surface of the refrigerated air duct plate 32 facing the thermal insulation cover plate 31 .

[0059] See also Figure 8 , exemplarily, the number of the refrigerated air outlets 302 can be multiple.

[0060] See also Figure 8 For example, a plurality of refrigeration air outlets 302 may be symmetrically arranged on both side edges of the first air duct cover plate 33 .

[0061] See also Figure 6 and Figure 8 Exemplarily, the refrigeration duct assembly 30 also includes a refrigeration duct rear cover 34, and the refrigeration duct rear cover 34 and the thermal insulation cover 31 are arranged on the same side of the refrigeration duct plate 32, and the thermal insulation cover 31 is arranged close to the refrigeration air inlet 301, and the refrigeration duct rear cover 34 and the thermal insulation cover 31 jointly cover the refrigeration duct 321.

[0062] See also Figure 6 and Figure 8 The refrigeration air duct plate 32 is further provided with a second air inlet cavity 322 , one end of the second air inlet cavity 322 is connected to the refrigeration air duct 321 , and the other end is arranged toward the air outlet end of the refrigeration fan 41 .

[0063] It should be noted that, by providing the second air inlet chamber 322, the gas sucked from the refrigerating chamber 11 by the refrigerating fan 41 can be sent back to the refrigerating air duct 321 via the second air inlet chamber 322, and then sent back to the refrigerating chamber 11 via the refrigerating air outlet 302 of the refrigerating air duct 321, thereby realizing the self-circulation of gas in the refrigerating chamber 11. In this way, when the user opens and closes the refrigerator door or puts new items (such as food) in the refrigerating chamber 11, resulting in uneven temperatures in different areas of the refrigerating chamber 11, the refrigerating fan 41 can be started, and the self-circulation of gas in the refrigerating chamber 11 can achieve uniform mixing of higher temperature gas and lower temperature gas, thereby providing the refrigerating chamber 11 with a refrigerated environment with uniform storage temperature, thereby improving the refrigerated storage quality of the refrigerating chamber 11.

[0064] See also Figure 5 and Figure 8 Since the distance of the second air inlet cavity 322 is short, that is, the distance between the refrigeration fan 41 and the refrigeration air duct 321 is short, the refrigeration fan 41 can achieve self-circulation of gas in the refrigeration chamber 11 at a higher wind speed, thereby achieving the effect of uniform temperature in each area of ​​the refrigeration chamber 11 at a faster speed.

[0065] See also Figure 6 and Figure 8The refrigerated air duct 321 includes a first air inlet cavity and an air supply cavity connected to each other, wherein the refrigerated air inlet 301 is arranged at one end of the first air inlet cavity away from the air supply cavity, the refrigerated air outlet 302 is arranged at the edge of the air supply cavity, and the second air inlet cavity 322 is connected to the first air inlet cavity.

[0066] See also Figure 5 and Figure 8 It can be seen that the distance between the refrigeration fan 41 and the refrigeration air duct 321 (ie, the distance of the second air inlet chamber 322 ) is much smaller than the distance between the freezing fan 42 and the refrigeration air inlet 301 of the refrigeration air duct 321 .

[0067] See also Figure 6 and Figure 8 The refrigerated air duct plate 32 is also provided with a accommodating cavity 323, and the accommodating cavity 323 is arranged corresponding to the refrigerated return air port 331. The accommodating cavity 323 passes through the side of the refrigerated air duct plate 32 facing the thermal insulation cover plate 31 and the side facing the first air duct cover plate 33, and the refrigerated fan 41 is arranged in the accommodating cavity 323.

[0068] See also Figure 8 , one end of the second air inlet chamber 322 away from the refrigeration air duct 321 is connected to the accommodating chamber 323. Exemplarily, a first air gate (not shown) is provided at at least one position in the second air inlet chamber 322, at the connection between the second air inlet chamber 322 and the refrigeration air duct 321, and at the connection between the second air inlet chamber 322 and the accommodating chamber 323. The first air gate is used to control the opening and closing of the second air inlet chamber 322 and to control the flow of gas from the air outlet end of the refrigeration fan 41 to the refrigeration air duct 321.

[0069] It can be understood that by providing a first damper in the second air inlet chamber 322 and / or at the connection between the second air inlet chamber 322 and the refrigeration air duct 321 and the accommodating chamber 323, the first damper can be used to control the opening or closing of the second air inlet chamber 322, so that the user can decide whether to execute the self-circulation mode of the gas in the refrigerating chamber 11 according to needs, that is, when the first damper is opened, the gas in the refrigerating chamber 11 can achieve self-circulation, and when the first damper is closed, the gas in the refrigerating chamber 11 cannot achieve self-circulation.

[0070] See also Figure 5 and Figure 8The return air duct assembly 50 includes a return air duct plate 51 and a second air duct cover plate 52, the return air duct plate 51 includes a main body 511, the main body 511 is arranged on the side of the refrigeration air duct plate 32 away from the first air duct cover plate 33, the main body 511 is provided with the return air inlet 502, the return air outlet 503 and the return air duct 501, the return air inlet 502 and the return air outlet 503 both pass through the side of the main body 511 facing the refrigeration air duct plate 32 and the side away from the refrigeration air duct plate 32, the return air duct 501 is arranged on the side of the main body 511 away from the refrigeration air duct plate 32, and the second air duct cover plate 52 is arranged on the side of the main body 511 provided with the return air duct 501.

[0071] See also Figure 3 and Figure 5 , illustratively, the return air duct 501 is formed in the form of a groove on the body 511 of the return air duct plate 51.

[0072] See also Figure 1 The refrigerator 100 further includes a freezing chamber 21 and a freezing air duct assembly 70 , and the freezing air duct assembly 70 is disposed on one side of the freezing chamber 21 .

[0073] See also Figure 5 , Fig. 9 , Fig.10 and Fig.11 The freezing air duct assembly 70 has a freezing air duct, and the freezing air duct has a freezing air inlet 702 and a first freezing air outlet 704 . The freezing air inlet 702 is connected to the evaporator chamber 60 , and the first freezing air outlet 704 is connected to the freezing chamber 21 .

[0074] See also Fig. 9 A refrigeration fan 42 is provided in the refrigeration air duct near the refrigeration air inlet 702, and the refrigeration fan 42 is used to suck the gas in the evaporator chamber 60 into the refrigeration air duct.

[0075] See also Fig. 9 , illustratively, the air inlet end of the refrigeration fan 42 is arranged toward the refrigeration air inlet 702.

[0076] See also Fig.11The freezing air duct assembly 70 includes a freezing air duct plate 71 and a third air duct cover plate 72. The third air duct cover plate 72 is arranged close to the freezing chamber 21. The freezing air duct plate 71 and the third air duct cover plate 72 together enclose the freezing air duct. The third air duct cover plate 72 is provided with the first freezing air outlet 704. The first freezing air outlet 704 passes through a side of the third air duct cover plate 72 close to the freezing chamber 21 and a side close to the freezing air duct plate 71.

[0077] See also Fig.10 and Fig.11 For example, the number of the first refrigerated air outlets 704 may be multiple, and the multiple first refrigerated air outlets 704 may be distributed in an array on the third air duct cover 72 .

[0078] See also Fig.11 Exemplarily, the refrigeration air duct assembly 70 also includes a support plate 73 arranged between the refrigeration air duct plate 71 and the third air duct cover plate 72, the refrigeration fan 42 is installed on the support plate 73 and is arranged on the side of the support plate 73 away from the third air duct cover plate 72, and the support plate 73 is provided with a hollow portion corresponding to the first refrigeration air outlet 704.

[0079] See also Fig.10 and Fig.11 , while combining Figure 5 and Figure 8 The freezing air duct also has a second freezing air outlet 703, and the second freezing air outlet 703 is connected to the refrigeration air inlet 301 of the refrigeration air duct 321. In addition, a second air door 81 is provided between the second freezing air outlet 703 and the refrigeration air inlet 301 of the refrigeration air duct 321, and the second air door 81 is used to control whether the gas in the freezing air duct enters the refrigeration air duct 321 and to control the flow rate of the gas entering the refrigeration air duct 321 from the freezing air duct.

[0080] See also Fig.11 For example, the second freezing air outlet 703 may be disposed on a side of the freezing air duct plate 71 facing the refrigerated air inlet 301 .

[0081] It can be understood that when the second freezing air outlet 703 of the freezing air duct is connected to the refrigeration air inlet 301 of the refrigeration air duct 321, it is equivalent to the refrigeration of the refrigeration chamber 11 and the refrigeration of the freezer chamber 21 sharing one evaporator 61. At this time, the refrigerator 100 of the embodiment of the present application is a single-system refrigerator.

[0082] See also Figure 1The refrigerator 100 further includes a refrigerating box 10 , and the refrigerating air duct assembly 30 and the refrigerating chamber 11 are both disposed in the inner cavity of the refrigerating box 10 .

[0083] See also Figure 1 and Figure 5 The refrigerator 100 further includes a freezer chamber 20 , and the evaporator chamber 60 , the freezing air duct assembly 70 and the freezer chamber 21 are all arranged in the inner cavity of the freezer chamber 20 .

[0084] See also Figure 3 and Figure 5 , while combining Figure 8 and Fig.10 The return air duct plate 51 also includes a connecting portion 512, which is connected to the main body 511, and is arranged between the refrigerator liner 10 and the freezer liner 20. An air inlet channel is enclosed between the connecting portion 512 and the second air duct cover plate 52, and the air inlet channel is connected to the second freezing air outlet 703 of the freezing air duct and the refrigeration air inlet 301 of the refrigeration air duct 321, and the second air door 81 is arranged in the air inlet channel.

[0085] Figure 5 For the general Figure 3 For a schematic diagram of the refrigerator liner 10 and the freezer liner 20 removed, see Figure 3 and Figure 5 It can be seen that the evaporator 61 is arranged between the freezing air duct assembly 70 and the freezing chamber 20, that is, the freezing air duct assembly 70 and the freezing chamber 20 together enclose the evaporator chamber 60.

[0086] See also Figure 3 and Figure 4 The body 511 of the return air duct plate 51 is arranged on the outside of the refrigerator liner 10 and the outside of the freezer liner 20. The refrigerator liner 10 is provided with a return air outlet 12 corresponding to the accommodating cavity 323, and the freezer liner 20 is provided with a return air inlet 22. The return air inlet 502 on the body 511 is arranged corresponding to the return air outlet 12 on the refrigerator liner 10, and the return air outlet 503 on the body 511 is arranged corresponding to the return air inlet 22 on the freezer liner 20.

[0087] Exemplarily, the refrigeration mode of the refrigerating chamber 11 of the refrigerator 100 according to the embodiment of the present application may be operated as follows:

[0088] Under normal circumstances, the second air door 81 located between the freezing air duct and the refrigerating air duct 321 is kept in an open state, and the first air door located in the second air inlet chamber 322 is kept in a closed state. At this time, the gas circulation in the refrigerating chamber 11 of the refrigerator 100 can be carried out in the following manner: the low-temperature gas in the evaporator chamber 60 enters the refrigerating chamber 11 via the freezing air duct, the first air door, and the refrigerating air duct 321. Thereafter, the hot air after heat exchange with the stored items in the refrigerating chamber 11 is sucked into the return air duct 501 by the refrigerating fan 41 via the refrigerating return air port 331, and returns to the evaporator chamber 60 along the return air duct 501. The hot air is converted into low-temperature gas again after heat exchange with the evaporator 61. The low-temperature gas enters the refrigerating chamber 11 via the freezing air duct, the first air door, and the refrigerating air duct 321 again, thereby realizing circulation.

[0089] When the user opens or closes the refrigerator door or puts new items (such as food) into the refrigerator chamber 11, resulting in uneven temperatures in different areas of the refrigerator chamber 11, the second air door 81 located between the freezing air duct and the refrigerating air duct 321 can be kept closed, and the first air door located in the second air inlet chamber 322 can be kept open. At this time, the refrigerating fan 41 inhales gas from the refrigerator chamber 11 and sends it back to the refrigerating air duct 321 through the second air inlet chamber 322, and then sends it back to the refrigerator chamber 11 through the refrigerating air outlet 302 of the refrigerating air duct 321, thereby realizing self-circulation of gas in the refrigerator chamber 11, and further achieving the effect of uniform temperature in each area of ​​the refrigerator chamber 11.

[0090] The refrigerator provided by the embodiment of the present application is described in detail above. The principle and implementation method of the present application are described in detail using specific examples herein. The description of the above embodiments is only used to help understand the present application. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as limiting the present application.

Claims

1. A refrigerator, characterized in that: include: Cold room; A refrigeration air duct assembly, the refrigeration air duct assembly is arranged at one side of the refrigeration chamber, the refrigeration air duct assembly has a refrigeration air duct and a refrigeration return air outlet, wherein the refrigeration air duct has a refrigeration air inlet and a refrigeration air outlet, and the refrigeration air outlet and the refrigeration return air outlet are both connected to the refrigeration chamber; A refrigeration fan, the refrigeration fan having an air inlet end and an air outlet end, the air inlet end of the refrigeration fan being arranged toward the refrigeration return air outlet; A return air duct assembly, wherein the return air duct assembly has a return air duct, wherein the return air duct has a return air inlet and a return air outlet, and the return air inlet is arranged toward the air outlet end of the refrigeration fan; An evaporator chamber is provided with an evaporator, and the refrigeration air inlet of the refrigeration air duct and the return air outlet of the return air duct are both connected to the evaporator chamber.

2. The refrigerator according to claim 1, characterized in that: The refrigeration air duct assembly includes a thermal insulation cover, a refrigeration air duct plate and a first air duct cover, wherein the refrigeration air duct plate is arranged between the first air duct cover and the thermal insulation cover, the first air duct cover is arranged close to the refrigeration chamber, the refrigeration air duct is provided on the side of the refrigeration air duct plate facing the thermal insulation cover, the refrigeration return air outlet is provided on the first air duct cover, and the refrigeration return air outlet passes through the side of the first air duct cover facing the refrigeration chamber and the side facing the thermal insulation cover.

3. The refrigerator according to claim 2, characterized in that: The refrigeration air duct plate is further provided with a second air inlet cavity, one end of which is connected to the refrigeration air duct, and the other end of which is arranged toward the air outlet end of the refrigeration fan; and / or, The refrigerated air duct plate is also provided with a accommodating cavity, which is arranged corresponding to the refrigerated return air outlet. The accommodating cavity passes through the side of the refrigerated air duct plate facing the thermal insulation cover plate and the side facing the first air duct cover plate, and the refrigerated fan is arranged in the accommodating cavity.

4. The refrigerator according to claim 3, characterized in that: One end of the second air inlet cavity facing away from the refrigeration air duct is communicated with the accommodating cavity, and a first air gate is provided at at least one position in the second air inlet cavity, at the connection between the second air inlet cavity and the refrigeration air duct, and at the connection between the second air inlet cavity and the accommodating cavity. The first air gate is used to control the opening and closing of the second air inlet cavity and to control the flow of gas from the air outlet end of the refrigeration fan to the refrigeration air duct.

5. The refrigerator according to claim 2, characterized in that: The return air duct assembly includes a return air duct plate and a second air duct cover plate, the return air duct plate includes a main body, the main body is arranged on the side of the refrigeration air duct plate away from the first air duct cover plate, the return air inlet, the return air outlet and the return air duct are provided on the main body, the return air inlet and the return air outlet both pass through the side of the main body facing the refrigeration air duct plate and the side away from the refrigeration air duct plate, the return air duct is arranged on the side of the main body away from the refrigeration air duct plate, and the second air duct cover plate is arranged on the side of the main body where the return air duct is provided.

6. The refrigerator according to claim 1, characterized in that: The refrigerator further comprises a freezing chamber and a freezing air duct assembly, wherein the freezing air duct assembly is arranged at one side of the freezing chamber; The freezing air duct assembly comprises a freezing air duct, wherein the freezing air duct comprises a freezing air inlet and a first freezing air outlet, wherein the freezing air inlet is connected to the evaporator chamber, and the first freezing air outlet is connected to the freezing chamber; A refrigeration fan is provided in the refrigeration air duct near the refrigeration air inlet, and the refrigeration fan is used to suck the gas in the evaporator chamber into the refrigeration air duct.

7. The refrigerator according to claim 6, characterized in that: The freezing air duct also has a second freezing air outlet, which is connected to the refrigeration air inlet of the refrigeration air duct, and a second air gate is provided between the second freezing air outlet and the refrigeration air inlet of the refrigeration air duct, and the second air gate is used to control whether the gas in the freezing air duct enters the refrigeration air duct and to control the flow rate of the gas entering the refrigeration air duct from the freezing air duct.

8. The refrigerator according to claim 6, characterized in that: The freezing air duct assembly includes a freezing air duct plate and a third air duct cover plate, the third air duct cover plate is arranged close to the freezing chamber, the freezing air duct plate and the third air duct cover plate together enclose the freezing air duct, the third air duct cover plate is provided with the first freezing air outlet, the first freezing air outlet passes through a side of the third air duct cover plate close to the freezing chamber and a side close to the freezing air duct plate.

9. The refrigerator according to any one of claims 1 to 8, characterized in that: The refrigerator further comprises a refrigerating box, wherein the refrigerating air duct assembly and the refrigerating chamber are both arranged in an inner cavity of the refrigerating box; and / or, The refrigerator further comprises a freezing chamber, wherein the evaporator chamber, the freezing air duct assembly and the freezing chamber are all arranged in an inner cavity of the freezing chamber.

10. The refrigerator according to claim 9, characterized in that: The return air duct plate further includes a connecting portion, the connecting portion is connected to the body, the connecting portion is arranged between the refrigerator liner and the freezer liner, an air inlet channel is enclosed between the connecting portion and the second air duct cover plate, the air inlet channel is connected to the second freezing air outlet of the freezing air duct and the refrigeration air inlet of the refrigeration air duct, and the second air door is arranged in the air inlet channel; and / or, The evaporator is arranged between the freezing air duct assembly and the freezing chamber, and the freezing air duct assembly and the freezing chamber together enclose the evaporator chamber; and / or, The body of the return air duct plate is arranged on the outside of the refrigerator liner and the outside of the freezer liner, the refrigerator liner is provided with a return air outlet corresponding to the accommodating cavity, the freezer liner is provided with a return air inlet, the return air inlet on the body corresponds to the return air outlet on the refrigerator liner, and the return air outlet on the body corresponds to the return air inlet on the freezer liner.

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