Air circulation device with lighting function and direct cooling refrigerator

Abstract

The utility model belongs to the technical field of refrigeration equipment, and particularly provides an air circulation device with a lighting function and a direct cooling refrigerator. The direct-cooling refrigerator aims at solving the problem that an existing direct-cooling refrigerator is prone to frosting. Therefore, the air circulation device comprises a shell, a fan and a lighting module. The shell is provided with an air inlet and an air outlet. The fan is arranged in the shell and used for driving air to enter the shell from the air inlet and flow out of the shell from the air outlet. The lighting module is installed on the shell and used for lighting a storage chamber of the direct-cooling refrigerator when a door body of the direct-cooling refrigerator is opened. The air circulation device is suitable for the direct-cooling refrigerator to drive air in the direct-cooling refrigerator to flow circularly, so that the temperature in the direct-cooling refrigerator is distributed uniformly, and the phenomenon that an area, close to an evaporator, in the direct-cooling refrigerator is frosted due to the fact that the temperature is too low is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of refrigeration equipment, and particularly provides an air circulation device with a lighting function and a direct-cooling refrigerator. Background Art

[0002] A direct-cooling refrigerator, also known as a natural convection refrigerator, is a refrigerator that cools the items inside it by natural convection.

[0003] The evaporator of a direct-cooling refrigerator is generally arranged outside or inside the side wall of its storage compartment, so as to transfer the cold quantity of the evaporator to the storage compartment by heat conduction, and then cool the items in the storage compartment by natural convection.

[0004] Since the direct-cooling refrigerator uses natural convection for refrigeration, the temperature distribution in the storage compartment is uneven, resulting in a lower temperature in the area close to the evaporator, where frosting is likely to occur, and a higher temperature in the area far from the evaporator. When the frost layer is thick, the frost layer will affect the transfer of cold quantity, thereby affecting the refrigeration effect of the direct-cooling refrigerator, increasing the energy consumption of the direct-cooling refrigerator, and even damaging the direct-cooling refrigerator. Therefore, users need to regularly clean the frost layer in the storage compartment, and the user experience is poor. Summary of the Utility Model

[0005] One object of the utility model is to solve the problem that the existing direct-cooling refrigerator is prone to frosting.

[0006] To achieve the above object, in a first aspect, the utility model provides an air circulation device with a lighting function, which is applicable to a direct-cooling refrigerator. The air circulation device includes:

[0007] A housing having an air inlet and an air outlet;

[0008] A fan arranged in the housing and used to drive air to enter the housing from the air inlet and flow out of the housing from the air outlet;

[0009] A lighting module installed on the housing and used to illuminate the storage compartment of the direct-cooling refrigerator when the door of the direct-cooling refrigerator is opened.

[0010] Optionally, the housing defines an air inlet cavity, a fan cavity for arranging the fan, and a lighting cavity for arranging the lighting module. The air inlet, the air inlet cavity, the fan cavity, and the air outlet are sequentially in fluid communication, and the lighting cavity is in communication with the air inlet cavity; the air circulation device further includes a light-transmitting cover installed on the housing and used to shield the lighting cavity. An air intake structure communicating with the lighting cavity is provided between at least one of the light-transmitting cover and the housing or between the two, so that under the action of the fan, air enters the lighting cavity from the air intake structure to cool the lighting module.

[0011] Optionally, the air inlet structure is a gap formed between the housing and the light-transmitting cover.

[0012] Optionally, the air circulation device further includes an ambient light disposed on the front side of the light-transmitting cover and a light guide cover at least partially disposed in the gap, and the light guide cover is configured to uniformly diffuse the light emitted by the ambient light.

[0013] Optionally, the air inlet cavity includes a top-side cavity located on the top side of the fan cavity and a front-side cavity located on the front side of the fan cavity; the lighting cavity is located on the front side of the front-side cavity.

[0014] Optionally, air inlets are provided on the left side and the right side of the top-side cavity and the bottom side of the front-side cavity.

[0015] Optionally, an opening is provided on the top side of the air inlet cavity, and the circumferential edge of the opening is configured to abut against the peripheral wall of the storage compartment of the direct-cooling refrigerator, so that the negative pressure generated when the fan operates sucks the air circulation device onto the peripheral wall of the storage compartment or forms an air cushion between the air circulation device and the peripheral wall of the storage compartment; and / or, the light-transmitting cover includes an upper inclined plate that extends obliquely backward and upward from its front end and abuts against the top wall of the lighting cavity and a lower inclined plate that extends obliquely backward and downward from its front end, and the upper inclined plate is connected to the lower inclined plate.

[0016] Optionally, the air circulation device further includes a plurality of diversion plates arranged in sequence in the transverse direction in the air outlet, and the interval between two adjacent diversion plates is denoted as the plate interval; in the transverse direction of the air outlet, the plate interval on the side with a larger air pressure near the air outlet is smaller, and the plate interval on the side with a smaller air pressure near the air outlet is larger.

[0017] The present utility model provides a direct-cooling refrigerator in a second aspect, including:

[0018] A box body defining at least one storage compartment;

[0019] A door body for shielding the storage compartment;

[0020] The air circulation device according to any one of the first aspect, disposed in the storage compartment, for driving the air in the storage compartment to circulate and flow, so as to prevent frosting on the side wall of the storage compartment.

[0021] Optionally, the direct-cooling refrigerator is configured to turn on the lighting module when the door body is opened and turn off the lighting module when the door body is closed.

[0022] Based on the foregoing description, those skilled in the art can understand that in the aforementioned technical solution of the present invention, by providing an air circulation device suitable for a direct cooling refrigerator, the air in the direct cooling refrigerator (specifically the storage compartment) can circulate under the action of the air circulation device; thereby, the temperature in the direct cooling refrigerator is evenly distributed as the air circulates, thereby avoiding the phenomenon of frost in the area near the evaporator in the direct cooling refrigerator due to excessively low temperature. By configuring a lighting module for the air circulation device, the air circulation device can also illuminate the storage compartment where it is located with the help of the lighting module, and thus the lighting device separately configured for the storage compartment in the traditional direct cooling refrigerator can be omitted. In other words, the present invention only needs to install one component for the direct cooling refrigerator, so that the direct cooling refrigerator can have the functions of anti-frost and lighting, making the assembly of the direct cooling refrigerator more convenient.

[0023] Furthermore, by making the shell define a lighting cavity, an air inlet cavity and a fan cavity which are fluidically connected in sequence, the lighting module is arranged in the lighting cavity, a light-transmitting cover is provided for shielding the lighting cavity, and an air inlet structure connected to the lighting cavity is provided between at least one of the light-transmitting cover and the shell or both, so that when the fan is working, part of the airflow is forced to flow through the lighting cavity via the air inlet structure, thereby cooling the lighting module and preventing the temperature of the lighting module from being too high, which would affect the service life of the lighting module.

[0024] Furthermore, by providing the light-transmitting cover with an upper inclined plate extending obliquely backward and upward from its front end and abutting against the top wall of the lighting cavity, not only the light-transmitting cover can be fixed, but also necessary installation space can be reserved for the atmosphere light and the light guide cover.

[0025] Other beneficial effects of the present invention will be described in detail below in conjunction with the accompanying drawings so that those skilled in the art can more clearly understand the improved purposes, features and advantages of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solution of the utility model, some embodiments of the utility model will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that the same figure number indicates the same or similar parts or components in different drawings; the drawings of the utility model are not necessarily drawn to scale. In the drawings:

[0027] Figure 1 This is a three-dimensional effect schematic diagram of a direct cooling refrigerator provided by the utility model;

[0028] Figure 2 yes Figure 1 A partial cross-sectional view of a central direct cooling refrigerator along the AA direction;

[0029] Figure 3 yes Figure 1Partial perspective view of the top wall of the storage compartment of a direct-cooling refrigerator;

[0030] Figure 4 It is the first structural exploded view of the air circulation device in some embodiments of the present utility model;

[0031] Figure 5 It is the second structural exploded view of the air circulation device in some embodiments of the present utility model;

[0032] Figure 6 It is the third structural exploded view of the air circulation device in some embodiments of the present utility model;

[0033] Figure 7 It is Figures 4 to 6 The first isometric view of the air circulation device;

[0034] Figure 8 It is Figures 4 to 6 The second isometric view of the air circulation device;

[0035] Figure 9 It is Figures 4 to 6 The third isometric view of the air circulation device;

[0036] Figure 10 It is Figure 7 The sectional view of the air circulation device along the B-B direction;

[0037] Figure 11 It is Figure 7 The sectional view of the housing of the air circulation device along the B-B direction;

[0038] Figure 12 It is Figure 7 The sectional view of the air circulation device along the C-C direction;

[0039] Figure 13 It is Figures 4 to 12 The first isometric view of the main housing;

[0040] Figure 14 It is Figures 4 to 12 The second isometric view of the main housing;

[0041] Figure 15 It is Figure 14 The sectional view of the main housing along the D-D direction;

[0042] Figure 16 It is Figures 4 to 12 The third isometric view of the main housing;

[0043] Figure 17 It is Figures 4 to 6 The isometric view of the sterilization module;

[0044] Figure 18 It is an isometric view of the sterilization module in some other embodiments of the present utility model.

[0045] Explanation of reference numerals in the drawings: 001, direct-cooling refrigerator;

[0046] 100, cabinet; 110, storage compartment; 111, windward sidewall; 112, sunk groove; 113, first quick-release structure; 1131, end cap; 114, first connection structure;

[0047] 200, door body; 201, transparent area;

[0048] 300, air circulation device; 301, main body part; 302, extension part;

[0049] 310, housing; 310a, main housing; 310b, bottom housing; 3101, air inlet; 31011, strip-shaped hole; 3102, air outlet; 3103, open end; 3104, fan cavity; 3105, air inlet cavity; 31051, axial cavity part; 31502, radial cavity part; 3106, lighting cavity; 3107, confluence cavity; 311, second quick-release structure; 312, second connection structure; 313, spacer structure;

[0050] 321, fan; 322, fixing bracket;

[0051] 330, drainage plate; 331, plate spacing;

[0052] 340, sterilization module; 341, ventilation hole; 342, positive electrode member; 343, negative electrode member; 344, outer frame;

[0053] 350, lighting module;

[0054] 360, light-transmitting cover; 3601, air intake structure; 361, upper inclined plate; 362, lower inclined plate;

[0055] 370, atmosphere lamp;

[0056] 380, light guide cover; 381, horizontal part; 382, vertical part; 383, connecting part; 384, upturned part;

[0057] 390, rotational speed sensor;

[0058] 400, evaporator. Detailed implementation manners

[0059] Those skilled in the art should understand that the embodiments described below are only a part of the embodiments of the present utility model, rather than all the embodiments of the present utility model. These embodiments are intended to explain the technical principles of the present utility model and are not intended to limit the protection scope of the present utility model. Based on the embodiments provided by the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts should still fall within the protection scope of the present utility model.

[0060] It should be noted that in the description of the present utility model, the terms indicating directions or positional relationships such as "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0061] Furthermore, it should be noted that in the description of the present utility model, unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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 directly connected or indirectly connected through an intermediate medium, and it can also be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. For example, without special description, the terms "installation", "connection", "coupling", and "fixing" can specifically be any feasible connection forms such as bolt connection, screw connection, welding, plugging, riveting, fusing, snap connection, etc.

[0062] In addition, it should be noted that in the description of the present utility model, the terms "cooling capacity" and "heat quantity" are two descriptions of the same physical state. That is, the higher the "cooling capacity" of a certain object (such as an evaporator, air, condenser, etc.), the lower the "heat quantity" it has; the lower the "cooling capacity", the higher the "heat quantity". When a certain object absorbs "cooling capacity", it will release "heat quantity", and when it releases "cooling capacity", it will absorb "heat quantity". A certain object stores "cooling capacity" or "heat quantity" to keep the current temperature of the object. "Refrigeration" and "heat absorption" are two descriptions of the same physical phenomenon, that is, a certain object (such as an evaporator) will absorb heat while refrigerating.

[0063] Since the air circulation device with lighting function of the present utility model is applicable to a direct-cooling refrigerator, the air circulation device of the present utility model will be described in detail below with reference to the accompanying drawings and in combination with the direct-cooling refrigerator to facilitate the understanding of the air circulation device provided by the present utility model by those skilled in the art.

[0064] As Figure 1 shown, in the present utility model, the direct-cooling refrigerator 001 includes a box body 100, a door body 200, an air circulation device 300, and an evaporator 400 for refrigeration.

[0065] Among them, the box body 100 defines at least one storage compartment 110. At least one storage compartment 110 includes at least one of a refrigerating compartment, a freezing compartment, and a variable-temperature compartment.

[0066] Among them, the door body 200 is rotatably mounted on the box body 100 and is used to shield the storage compartment 110. Those skilled in the art can, according to needs, make one door body 200 correspond to one storage compartment 110, or make one door body 200 correspond to two or more storage compartments 110.

[0067] Among them, the air circulation device 300 is installed on the inner top of the storage compartment 110. Those skilled in the art can, according to needs, respectively configure at least one air circulation device 300 for each storage compartment 110, or configure at least one air circulation device 300 for at least one of all the storage compartments 110.

[0068] Among them, the evaporator 400 is installed on the box body 100 and is used to provide cold for the storage compartment 110.

[0069] As Figure 2 shown, in the present utility model, a sunk groove 112 is provided on the top wall of the storage compartment 110, and the air circulation device 300 is installed in the sunk groove 112 to hide a part of the air circulation device 300, thereby optimizing the aesthetics of the direct-cooling refrigerator 001 and avoiding the air circulation device 300 being knocked when the user takes and places items.

[0070] Furthermore, the sunk groove 112 extends backward to the rear side wall of the storage compartment 110 so that the installation position of the air circulation device 300 is as far back as possible.

[0071] Optionally, the sunk groove 112 is located in the middle of the storage compartment 110 in the transverse direction so that the air circulation device 300 can also be located in the middle of the storage compartment 110 in the transverse direction, thereby enabling the air driven by it to flow evenly in the storage compartment 110.

[0072] Optionally, the depth of the front part of the sinking groove 112 gradually decreases from the rear to the front, and the height of the front part of the air circulation device 300 gradually decreases from the rear to the front, so as to reasonably arrange the components in the air circulation device 300.

[0073] Of course, those skilled in the art can also omit the above-mentioned sinking groove 112 according to needs. However, in this case, the air circulation device 300 will be more prominent, affecting the aesthetics of the direct-cooling refrigerator 001, and even affecting the storage volume of the direct-cooling refrigerator 001.

[0074] As Figure 2 shown, in the present utility model, the air circulation device 300 includes a housing 310 and a fan 321.

[0075] Continue to refer to Figure 2 , the housing 310 has an air inlet 3101 and an air outlet 3102. Denote the side wall of the storage compartment 110 opposite to the air outlet 3102 as the windward side wall 111 (such as Figure 1 and Figure 2 shown, the rear side wall of the storage compartment 110), and the air outlet 3102 is inclined downward in the direction of approaching the windward side wall 111.

[0076] In the present utility model, at least a part of the evaporator 400 corresponds to the windward side wall 111. In other words, the evaporator 400 is arranged at the windward side wall 111, and at least a part of the evaporator 400 is installed on the outer side or the inner side of the windward side wall 111, so that the windward side wall 111 can receive the cold of the evaporator 400 and has a lower temperature.

[0077] From Figure 2 it can be seen that in the present utility model, the air circulation device 300 is arranged at the rear part of the inner top of the storage compartment 110, so that the housing 310 is as close as possible to the windward side wall 111, and the gap between the air outlet 3102 (located at the rear part of the housing 310) and the windward side wall 111 is reduced.

[0078] Continue to refer to Figure 2 , the fan 321 is arranged in the housing 310 and is used to drive the air in the storage compartment 110 to enter the housing 310 from the air inlet 3101, and make the air outlet 3102 blow out an air flow that is inclined downward and shoots at the windward side wall 111, so that the air flow flows downward along the windward side wall 111, thereby preventing the windward side wall 111 from frosting.

[0079] In the present utility model, the fan 321 is a centrifugal fan. Of course, those skilled in the art can also set the fan 321 as an axial flow fan, an inclined flow fan, a cross flow fan or any other feasible fan according to needs, and make adaptive adjustments to the structures of other components of the air circulation device 300.

[0080] Continue to refer to Figure 2 As shown in Figure 2 , the included angle between the tangent line of the bottom wall of the air outlet 3102 and the windward side wall 111 is denoted as α, and 10° ≤ α ≤ 75°. The included angle between the tangent line of the bottom wall of the air outlet 3102 and the tangent line of the top wall is denoted as β, and 5° ≤ β ≤ 175°.

[0081] In the present utility model, α and β are used to enable the air flow blown out from the air outlet 3102 to flow along the surface of the windward side wall 111 in the vertical direction and pass through more areas of the windward side wall 111.

[0082] Furthermore, 15° ≤ α ≤ 45°, and / or, 15° ≤ β ≤ 165°.

[0083] Exemplarily, α can be any feasible value such as 10°, 15°, 20°, 30°, 45°, 60°, 75°, etc. β can be any feasible value such as 5°, 10°, 15°, 20°, 30°, 45°, 60°, 75°, 110°, 156°, 165°, 175°, etc.

[0084] Furthermore, α and β satisfy the following functional relationship:

[0085] α = (β + w ÷ w1 - b) ÷ h × h1

[0086] wherein, w is the width of the air circulation device 300 (as shown in Figure 1 ), h is the height of the air circulation device 300 (as shown in Figure 2 ).

[0087] wherein, w1 is any value selected from 200 mm to 500 mm, such as 200 mm, 222 mm, 250 mm, 350 mm, 398 mm, 456 mm, 480 mm, 500 mm, etc.

[0088] wherein, h1 is any value selected from 40 mm to 60 mm, such as 40 mm, 42 mm, 550 mm, 60 mm, etc.

[0089] wherein, b is any value selected from 10° to 15°, such as 10°, 11°, 13°, 14.5°, 15°, etc.

[0090] In the present utility model, α and β that satisfy the above functional relationship can enable the air flow sent out from the air outlet 3102 to cover as much as possible the area of the windward side wall 111 corresponding to the evaporator 400. That is to say, the area of the windward side wall 111 corresponding to the evaporator 400 can be blown by the air flow sent out from the air outlet 3102, so that the cold quantity in this area is taken away by the air flow to prevent frosting.

[0091] As shown inFigure 2 and Figure 3 As shown in Figure 3 , in the present utility model, a first quick-release structure 113 and a first connection structure 114 are provided on the top of the storage compartment 110 configured with the air circulation device 300 to fix the air circulation device 300 through the first quick-release structure 113 and the first connection structure 114. Specifically, the air circulation device 300 can be first connected or pre-fixed to the box body 100 through the first quick-release structure 113, and then the air circulation device 300 can be completely fixed to the box body 100 through the first connection structure 114.

[0092] From Figure 2 and Figure 3 it can be seen that the first quick-release structure 113 and the first connection structure 114 are provided on the top wall of the sunken groove 112 to ensure that the air circulation device 300 can be installed in the sunken groove 112.

[0093] As Figure 3 shown, the first quick-release structure 113 can be a columnar structure with an end cap 1131, and the first connection structure 114 can be a threaded hole. Moreover, the respective numbers of the first quick-release structure 113 and the first connection structure 114 are not limited to Figure 3 the two shown in Figure 3 , and can also be other arbitrary feasible numbers such as one, three, four, five, etc.

[0094] In addition, those skilled in the art can also, according to needs, set the first quick-release structure 113 to any other feasible structure, such as a slot, a buckle, a magnet, a slide rail, etc.

[0095] Correspondingly, those skilled in the art can also, according to needs, set the first connection structure 114 to any other feasible structure, such as a threaded post, a buckle, a magnet, etc.

[0096] On the premise that the air circulation device 300 can be fixed to the box body 100, those skilled in the art can also, according to needs, omit at least one of the first quick-release structure 113 and the first connection structure 114. For example, both the first quick-release structure 113 and the first connection structure 114 are omitted, and the air circulation device 300 is adhered to the box body 100 through other adhesive materials such as glue and double-sided tape.

[0097] Next, with reference to Figures 4 to 18 further examples of the air circulation device 300 in the present utility model will be given.

[0098] As Figures 4 to 7 , Figures 9 to 11 , Figures 13 to 16As shown, in some embodiments of the present invention, a second quick-release structure 311 matching the first quick-release structure 113 is provided on the housing 310 , so that the air circulation device 300 can be installed on the box body 100 through the second quick-release structure 311 .

[0099] Furthermore, the second quick-release structure 311 is configured as a U-shaped structure, so that the first quick-release structure 113 and the second quick-release structure 311 are plugged together in a plug-in manner.

[0100] Specifically, the columnar structure of the first quick-release structure 113 is embedded in the U-shaped structure and the end cap 1131 stops the U-shaped structure in the vertical direction, thereby achieving the plug-in connection between the first quick-release structure 113 and the second quick-release structure 311 .

[0101] In addition, in other embodiments of the present invention, those skilled in the art may also set the second quick-release structure 311 as required. Figure 3 The first quick-release structure 113 shown in FIG. 1 is a columnar structure with an end cap 1131. The first quick-release structure 113 is set as Figure 4 The second quick-release structure 311 shown in FIG. 3 is a U-shaped structure.

[0102] like Figures 4 to 7 As shown, in some embodiments of the present invention, the second quick-release structure 311 is disposed at the rear top of the air circulation device 300 to adapt to the first quick-release structure 113 disposed at the rear side of the top wall of the storage compartment 110 .

[0103] Of course, those skilled in the art may also appropriately adjust the locations of the second quick-release structure 311 and the first quick-release structure 113 as needed, such as arranging the second quick-release structure 311 at the front side or the middle of the top of the air circulation device 300 .

[0104] like Figures 4 to 7 , Figures 9 to 11 , Figure 13 and Figure 16 As shown, in some embodiments of the present invention, a second connection structure 312 matching the first connection structure 114 is disposed on the shell 310 , so that the air circulation device 300 is fixed to the box body 100 through the first connection structure 114 and the second connection structure 312 .

[0105] In some embodiments of the present invention, the air circulation device 300 is first pre-installed on the box body 100 through the first quick-release structure 113 and the second quick-release structure 311, and then fixed to the box body 100 through the first connecting structure 114 and the second connecting structure 312, which not only facilitates the installation and disassembly of the air circulation device 300, but also realizes the fixation between the air circulation device 300 and the box body 100.

[0106] Further, the second connection structure 312 is a through hole, which is aligned with the first connection structure 114 provided as a threaded hole, so that after a bolt or a screw penetrates through the through hole, it is tightened with the threaded hole to fix the air circulation device 300 to the box body 100.

[0107] In addition, in other embodiments of the present invention, those skilled in the art can also, according to needs, omit the setting of the second connection structure 312, and install the air circulation device 300 on the box body 100 only through the first quick-release structure 113 and the second quick-release structure 311. For example, at least one second quick-release structure 311 is respectively provided on the front side and the rear side of the housing 310, or other types of quick-release structures are provided on the front side of the housing 310 to fixedly install the air circulation device 300 on the box body 100.

[0108] Such as Figure 4 、 Figure 7 、 Figure 11 、 Figures 13 to 16 As shown, in some embodiments of the present invention, an opening 3103 communicating with the air inlet side of the fan 321 is provided on the top side of the housing 310, and the circumferential edge of the opening 3103 abuts against or is close to the top wall of the storage compartment 110, so that the negative pressure generated when the fan 321 operates sucks the air circulation device 300 onto the top wall of the storage compartment 110 or forms an air cushion between the air circulation device 300 and the top wall of the storage compartment 110.

[0109] Among them, the circumferential edge of the opening 3103 abutting against the top wall of the storage compartment 110 may be that a part of the circumferential edge or the entire circumferential edge of the opening 3103 abuts against the top wall of the storage compartment 110.

[0110] Among them, the circumferential edge of the opening 3103 being close to the top wall of the storage compartment 110 specifically means that the distance between the circumferential edge and the top wall is less than a set value, and the set value is not greater than 10 mm, preferably not greater than 5 mm, further preferably not greater than 3 mm, and still further preferably not greater than 1 mm.

[0111] Those skilled in the art can understand that the setting of the open opening 3103, especially when a part of the circumferential edge of the open opening 3103 abuts against the top wall of the storage chamber 110, or the circumferential edge of the open opening 3103 is disposed adjacent to the top wall of the storage chamber 110, enables the air circulation device 300 to also suck onto the top wall of the storage chamber 110 by means of the negative pressure generated when the fan 321 operates, offsetting a part of the gravity of the air circulation device 300. This not only strengthens the reliability of the connection between the air circulation device 300 and the box body 100, but also increases the air inlet area of the air circulation device 300. At the same time, the air cushion formed between the air circulation device 300 and the top wall of the storage chamber 110 can also play a shock-absorbing role, thereby reducing the noise generated when the air circulation device 300 operates.

[0112] As Figures 4 to 7 、 Figures 10 to 16 shown, in some embodiments of the present utility model, the housing 310 may further define a fan chamber 3104 and an air inlet chamber 3105 located on the top side of the fan chamber 3104, and the open opening 3103 is formed on the top side of the air inlet chamber 3105. And, the air inlet 3101 of the air circulation device 300 is formed on the circumferential wall of the air inlet chamber 3105, and the air outlet 3102 of the air circulation device 300 is formed in the area where the housing 310 communicates with the fan chamber 3104.

[0113] As Figure 4 、 Figures 10 to 13 and Figure 16 shown, in some embodiments of the present utility model, the air inlet chamber 3105 may include an axial chamber portion 31051 and a radial chamber portion 31502. The axial chamber portion 31051 is located on the top side of the fan chamber 3104 in the axial direction of the fan 321, and the radial chamber portion 31502 is located on the front side of the fan chamber 3104 in the radial direction of the fan 321.

[0114] Among them, air inlets 3101 are respectively provided on the left side, right side of the axial chamber portion 31051 and the bottom side of the radial chamber portion 31502.

[0115] In other embodiments of the present utility model, those skilled in the art may also, according to needs, only provide air inlets 3101 on one or two of the left side, right side of the axial chamber portion 31051 and the bottom side of the radial chamber portion 31502.

[0116] As Figures 4 to 11 、 Figures 13 to 16 shown, in some embodiments of the present utility model, the air inlet 3101 is configured as a plurality of rows of strip-shaped holes 31011, and the lengths of the strip-shaped holes 31011 in the same row are different. And optionally, the spacing structure 313 between two adjacent strip-shaped holes 31011 in the same row is aligned with one strip-shaped hole 31011 in the adjacent row.

[0117] Those skilled in the art can understand that the above setting form of the air inlet 3101 can optimize the appearance of the air circulation device 300, making the air circulation device 300 look more beautiful as a whole.

[0118] As Figures 4 to 11 shown, in some embodiments of the present invention, the housing 310 may include a main housing 310a and a bottom housing 310b. The air inlet cavity 3105 and the air inlet 3101 are formed on the main housing 310a, and the fan cavity 3104 and the air outlet 3102 are formed between the main housing 310a and the bottom housing 310b. The main housing 310a and the bottom housing 310b can be fixedly connected together in any feasible manner, such as welding, screw connection, bonding, plugging, snap connection, etc.

[0119] Those skilled in the art can understand that the above form of the housing 310 not only facilitates the production and manufacturing of the housing 310, but also facilitates the installation of the fan 321.

[0120] As Figures 4 to 10 shown, in some embodiments of the present invention, the air circulation device 300 further includes a fixing bracket 322, a diversion plate 330, a sterilization module 340, a lighting module 350, a light-transmitting cover 360, an ambient light 370 and a light guide cover 380.

[0121] Among them, the fixing bracket 322 is used to fix the fan 321 to the housing 310, the diversion plate 330 is used to make the air blow out evenly from the air outlet 3102, the sterilization module 340 is used to sterilize the air flowing through the air circulation device 300, the lighting module 350 is used to provide lighting for the storage compartment 110 where the air circulation device 300 is located, the light-transmitting cover 360 is used to cover and hide the lighting module 350, the ambient light 370 is used to provide ambient light for the storage compartment 110 where the air circulation device 300 is located, and the light guide cover 380 is used to evenly diffuse the light emitted by the ambient light 370.

[0122] In addition, in other embodiments of the present invention, those skilled in the art can also omit at least one of the diversion plate 330, the sterilization module 340, the lighting module 350, the light-transmitting cover 360, the ambient light 370 and the light guide cover 380 according to actual needs.

[0123] Next, the fixing bracket 322, the diversion plate 330, the sterilization module 340, the lighting module 350, the light-transmitting cover 360, the ambient light 370 and the light guide cover 380 will be described item by item with reference to the accompanying drawings.

[0124] As Figures 4 to 6 and Figure 10As shown, in some embodiments of the present utility model, the fixing bracket 322 is fixedly connected to the casing 310 and the blower 321 respectively (such as bolt connection, screw connection, snap connection, riveting, etc.) to fix the blower 321 to the casing 310. Further, the fixing bracket 322 is fixedly connected to at least one of the main casing 310a and the bottom casing 310b. Alternatively, those skilled in the art can also, according to needs, integrally form the fixing bracket 322 with one of the main casing 310a and the bottom casing 310b. Or, integrally form the fixing bracket 322 with the non-rotating part of the blower 321.

[0125] As Figure 5 , Figure 6 , Figures 9 to 12 , Figure 14 and Figure 15 As shown, a plurality of diversion plates 330 are arranged at the air outlet 3102, and the plurality of diversion plates 330 are sequentially and spaced apart in the transverse direction of the air outlet 3102.

[0126] Further, the plurality of diversion plates 330 can be fixedly connected to or integrally formed with the casing 310, especially the main casing 310a. The fixed connection includes bonding, plugging, welding, etc.

[0127] As Figure 12 shown, if the interval between two adjacent diversion plates 330 is denoted as the plate interval 331, then in the transverse direction of the air outlet 3102, the plate interval 331 on the side with higher air pressure near the air outlet 3102 is smaller, and the plate interval 331 on the side with lower air pressure near the air outlet 3102 is larger.

[0128] Those skilled in the art can understand that by arranging a plurality of diversion plates 330 at the air outlet 3102, the air flow blown out from the air outlet 3102 can be divided into multiple strands in the transverse direction. By making the plate interval 331 on the side with higher air pressure near the air outlet 3102 smaller and the plate interval 331 on the side with lower air pressure near the air outlet 3102 larger, the flow rate and velocity of each air flow are made as equal as possible, so that the air flow blown out from the air outlet 3102 is more uniform.

[0129] Continuing to refer to Figure 12 , along the direction of the air pressure from large to small at the air outlet 3102, the plate interval 331 first gradually increases and then becomes equal. And, the proportion of the equal plate intervals 331 in all the plate intervals 331 is selected from any value between 0.4 and 0.6 (such as 0.4, 0.45, 0.5, 0.58, 0.6, etc.) to make the flow velocity of the air flow blown out from each plate interval 331 as equal as possible.

[0130] Further, any plate interval 331 is selected from any value in the range of 2 mm to 20 mm (such as 2 mm, 3 mm, 5 mm, 6 mm, 8 mm, 9 mm, 10 mm, 12 mm, 15 mm, 18 mm, 20 mm, etc.), and in particular, it can be selected from any value in the range of 5 mm to 10 mm, so as to ensure that the flow velocities of the airflows blown out from each plate interval 331 are as equal as possible, while also avoiding that the plate interval 331 is too small, which brings a large resistance to the airflows.

[0131] Continue to refer to Figure 12 , in the transverse direction of the air outlet 3102, the thickness of the diversion plate 330 on the side with a larger wind pressure near the air outlet 3102 is larger, and the thickness of the diversion plate 330 on the side with a smaller wind pressure near the air outlet 3102 is smaller.

[0132] Those skilled in the art can understand that, in the transverse direction of the air outlet 3102, by making the thickness of the diversion plate 330 on the side with a larger wind pressure near the air outlet 3102 larger, it is avoided that the diversion plate 330 vibrates when impacted by a faster airflow. By making the thickness of the diversion plate 330 on the side with a smaller wind pressure near the air outlet 3102 smaller, the resistance of the diversion plate 330 to the airflow is reduced.

[0133] Further, the thickness of any diversion plate 330 is selected from any value in the range of 0.5 mm to 3 mm, such as 0.5 mm, 0.8 mm, 1 mm, 1.2 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, etc.

[0134] As Figures 4 to 7 and Figure 10 shown, in some embodiments of the present utility model, the sterilization module 340 is arranged in the air inlet cavity 3105 for sterilizing and / or deodorizing the air in the air inlet cavity 3105.

[0135] As Figure 7 and Figure 10 shown, in some embodiments of the present utility model, the sterilization module 340 is aligned with the air inlet 3101 so that the air entering the air inlet cavity 3105 from the air inlet 3101 flows through the sterilization module 340.

[0136] Further, those skilled in the art can, according to needs, make each air inlet 3101 respectively correspond to at least one sterilization module 340, or make one or more of all the air inlets 3101 respectively correspond to at least one sterilization module 340.

[0137] Further, in some embodiments of the present utility model, the sterilization module 340 is a structure made of a material with a sterilization function. The material with a sterilization function includes copper ions or silver ions.

[0138] As Figure 17 shown, in some embodiments of the present utility model, a plurality of ventilation holes 341 allowing air to flow through are provided on the sterilization module 340 to increase the contact area between the sterilization module 340 and air.

[0139] In addition, in other embodiments of the present utility model, those skilled in the art can also, according to needs, set the sterilization module 340 to any other feasible structure or device, such as a negative ion sterilization device, an ultraviolet sterilization device, an electrostatic sterilization device, an ozone sterilization device.

[0140] Exemplarily, in Figure 18 some other embodiments shown, the sterilization module 340 includes a positive electrode member 342 and a negative electrode member 343, so that when the positive electrode member 342 and the negative electrode member 343 are electrified, the sterilization module 340 sterilizes and deodorizes air by means of electrostatic adsorption. Specifically, high-voltage electricity is applied to the positive electrode member 342 and the negative electrode member 343, and particles or molecules in the air are adsorbed onto the positive electrode member 342 or the negative electrode member 343 under the action of the electric field and are destroyed by the high-voltage charge, thereby achieving the purpose of sterilization and deodorization.

[0141] Continuing to refer to Figure 18 , the positive electrode member 342 and the negative electrode member 343 are in a comb tooth structure that intersects each other, and the sterilization module 340 further includes an outer frame 344 disposed outside the positive electrode member 342 and the negative electrode member 343. The outer frame 344 is used to fix the positive electrode member 342 and the negative electrode member 343 so that the positive electrode member 342 and the negative electrode member 343 are spaced apart from each other. And, the outer frame 344 is made of an insulating material.

[0142] As Figures 4 to 7 and Figure 10 shown, the lighting module 350 is installed on the housing 310 to illuminate the storage compartment 110 where the air circulation device 300 is located when the door body 200 of the direct-cooling refrigerator 001 is opened.

[0143] In some embodiments of the present utility model, the direct-cooling refrigerator 001 is configured to turn on the lighting module 350 when the door body 200 is opened and turn off the lighting module 350 when the door body 200 is closed.

[0144] Exemplarily, the direct-cooling refrigerator 001 is configured with a door-opening / closing sensor (not shown in the figure) for detecting the opening and closing of the door body 200. When the controller of the direct-cooling refrigerator 001 receives a signal from the door-opening / closing sensor indicating that the door body 200 is opened, the controller controls the direct-cooling refrigerator 001 to energize the lighting module 350 to turn on the lighting module 350. When the controller of the direct-cooling refrigerator 001 receives a signal from the door-opening / closing sensor indicating that the door body 200 is closed, the controller controls the direct-cooling refrigerator 001 to cut off the power supply to the lighting module 350 to turn off the lighting module 350.

[0145] Among them, the door-opening / closing sensor can be any feasible sensor such as a magnetic contact sensor, a photoelectric sensor, a mechanical microswitch, an ultrasonic sensor, etc.

[0146] Furthermore, in some embodiments of the present invention, the lighting module 350 can be fixed to the housing 310 by any feasible connection method, and this connection method can be screw connection, snap connection, bonding, magnetic attraction connection, etc.

[0147] In some embodiments of the present invention, the lighting module 350 includes at least one of an incandescent lamp, a halogen lamp, a fluorescent lamp, an ultraviolet lamp, a high-pressure sodium lamp, and an LED lamp.

[0148] Such as Figures 4 to 7 、 Figure 10 、 Figure 11 、 Figure 12 、 Figure 14 And Figure 15 As shown in

[0149] It can be seen from the figure that the second connection structure 312 is a through hole formed on the top wall of the lighting cavity 3106.

[0150] Such as Figure 12 、 Figure 13 And Figure 16 As shown in

[0151] Such as Figure 12 As shown, the lighting cavity 3106, the confluence cavity 3107, the radial cavity part 31502 of the air inlet cavity 3105, and the axial cavity part 31051 of the air inlet cavity 3105 are distributed in sequence from front to back and are in fluid communication in sequence.

[0152] As Figures 4 to 10 and Figure 12 shown, in some embodiments of the present utility model, the air circulation device 300 further includes a light-transmitting cover 360 installed on the housing 310 and used to shield the lighting cavity 3106. An air intake structure 3601 communicating with the lighting cavity 3106 is provided between at least one or both of the light-transmitting cover 360 and the housing 310 (as Figure 12 shown), so that under the action of the fan 321, air enters the lighting cavity 3106 from the air intake structure to cool the lighting module 350.

[0153] As Figure 12 shown, the air intake structure 3601 may specifically be a gap formed between the housing 310 and the light-transmitting cover 360.

[0154] Furthermore, the light-transmitting cover 360 can be fixed to the housing 310 by any feasible connection method, and this connection method can be screw connection, snap connection, bonding, magnetic attraction connection, etc.

[0155] As Figure 4 , Figure 5 and Figure 10 shown, in some embodiments of the present utility model, the light-transmitting cover 360 includes an upper inclined plate 361 extending obliquely backward and upward from its front end and a lower inclined plate 362 extending obliquely backward and downward from its front end, and the upper inclined plate 361 is connected to the lower inclined plate 362.

[0156] As Figure 10 shown, in the assembled state, the light-transmitting cover 360 abuts against the top wall (main housing 310a) of the lighting cavity 3106 through its upper inclined plate 361, and reserves an installation space for the ambient light 370 and the light guide cover 380 to install the ambient light 370 and the light guide cover 380 on the main housing 310a. The lower inclined plate 362 is adapted to the front end face of the main housing 310a.

[0157] In addition, in other embodiments of the present utility model, those skilled in the art can also, according to needs, omit the lighting cavity 3106 and its related technical features, and directly fix the lighting module 350 to the housing 310.

[0158] In some embodiments of the present utility model, the ambient light 370 may include an LED lamp, an optical fiber lamp, etc.

[0159] In some embodiments of the present utility model, the ambient light 370 can be fixed to the main housing 310a and / or the light-transmitting cover 360 by any feasible connection means, such as screw connection, snap connection, bonding, magnetic attraction connection, etc. The light guide cover 380 can also be fixed to the main housing 310a and / or the light-transmitting cover 360 by any feasible connection means, such as screw connection, snap connection, bonding, magnetic attraction connection, etc.

[0160] As Figure 10 and Figure 12 shown, in some embodiments of the present utility model, a part of the light guide cover 380 is located on the front side of the upper inclined plate 361, and a part is located in the gap serving as the air intake structure 3601. Moreover, the area of the air intake structure 3601 where the light guide cover 380 is arranged is not filled by the light guide cover 380, and there are still gaps.

[0161] As Figures 4 to 6 shown, in some embodiments of the present utility model, the light guide cover 380 is generally a bar-shaped structure that is symmetrical about the left and right, and the light guide cover 380 includes a transverse portion 381, a longitudinal portion 382, and a connecting portion 383. The transverse portion 381 is arranged on the front surface of the extension portion 302 and extends left and right, the longitudinal portion 382 is arranged on the bottom surface of the extension portion 302 and extends forward and backward, and the connecting portion 383 is arranged on the front surface of the extension portion 302 and connects the transverse portion 381 to the extension portion 302.

[0162] Furthermore, the light guide cover 380 can further include an upturned portion 384 located at the rear side of the longitudinal portion 382, so that the light guide cover 380 clamps the light-transmitting cover 360 in the middle in the front-back direction and the left-right direction respectively, thereby enhancing the structural stability of the light guide cover 380. Optionally, the light guide cover 380 can be bonded to the light-transmitting cover 360, and thus the light guide cover 380 surrounds a part of the light-transmitting cover 360, making the ambient light emitted from the light guide cover 380 more beautiful.

[0163] In addition, in other embodiments of the present utility model, those skilled in the art can also, according to needs, omit the setting of the light guide cover 380 and set the ambient light 370 as a light strip, such as an LED light strip.

[0164] Furthermore, in some embodiments of the present utility model, the ambient light 370 is configured to be lit when the fan 321 rotates. And the brightness and / or blinking frequency of the ambient light 370 can be made proportional to the rotational speed and / or current of the fan 321.

[0165] As an example one, as Figure 12 shown, the air circulation device 300 further includes a rotational speed sensor 390 for detecting the rotational speed of the fan 321, so that the air circulation device 300 controls the brightness and / or blinking frequency of the ambient light 370 according to the value detected by the rotational speed sensor 390.

[0166] Among them, the rotational speed sensor 390 can be any feasible sensor such as a magnetoelectric rotational speed sensor, an optoelectronic rotational speed sensor, a Hall effect rotational speed sensor, an eddy current rotational speed sensor, etc.

[0167] As a second example, the controller of the air circulation device 300 detects the current of the blower 321 in real time, so that the air circulation device 300 controls the brightness and / or blinking frequency of the atmosphere lamp 370 according to the magnitude of the current.

[0168] Furthermore, in some embodiments of the present utility model, the direct-cooling refrigerator 001 is configured to turn on the atmosphere lamp 370 when the door body 200 is opened and the blower 321 rotates, and turn off the atmosphere lamp 370 when the door body 200 is closed or the blower 321 stops rotating. Thus, when the user opens the door body 200, by observing whether the atmosphere lamp 370 is on or off, it can be determined whether the air circulation device 300 is working, making the air supply function of the air circulation device 300 visual.

[0169] Exemplarily, the direct-cooling refrigerator 001 is configured with a door opening / closing sensor for detecting the opening and closing of the door body 200 (which can be the same as the door opening / closing sensor described above). When the controller of the direct-cooling refrigerator 001 receives the signal sent by the door opening / closing sensor indicating that the door body 200 is opened, the controller controls the direct-cooling refrigerator 001 to energize the atmosphere lamp 370 to turn on the atmosphere lamp 370. When the controller of the direct-cooling refrigerator 001 receives the signal sent by the door opening / closing sensor indicating that the door body 200 is closed, the controller controls the direct-cooling refrigerator 001 to cut off the power supply to the atmosphere lamp 370 to turn off the atmosphere lamp 370.

[0170] Alternatively, those skilled in the art can also, according to needs, set a transparent area 201 on the door body 200 (as Figure 1 shown), and configure the direct-cooling refrigerator 001 to be turned on when the blower 321 rotates, so that the user can observe through the transparent area 201 whether the atmosphere lamp 370 is turned on, and further determine whether the air circulation device 300 is working.

[0171] As Figure 7 and Figure 12 shown, in some embodiments of the present utility model, the air circulation device 300 as a whole includes a main body portion 301 and an extension portion 302 (the portion located in front of the double-dot dash line) located in front of the main body portion 301 (the portion located behind the double-dot dash line). A blower cavity 3104 and an air inlet cavity 3105 are formed on the main body portion 301, and a lighting cavity 3106 is formed on the extension portion 302. The confluence cavity 3107 can be formed on the main body portion 301, can also be formed on the extension portion 302, or can also be formed between the main body portion 301 and the extension portion 302.

[0172] As can be seen from Figure 7 Figure 7 , the bottom surface of the extension portion 302 is located on the top side of the bottom surface of the main body portion 301, so that when viewed from the front side of the air circulation device 300, especially when the user opens the door body 200 of the direct-cooling refrigerator 001, the air circulation device 300 has a sense of paragraph visually and is more beautiful.

[0173] It should be noted that the main body portion 301 and the extension portion 302 are two opposite parts on the air circulation device 300, and may have a clear demarcation line (such as Figure 7 and Figure 12 the double-dashed line in), or may not have a clear demarcation line.

[0174] As can be seen from Figure 7 and Figure 12 Figure 12 , the lighting module 350, the light-transmitting cover 360, the atmosphere lamp 370 and the light guide cover 380 are all arranged on the extension portion 302, thus avoiding the vertical distribution of the four components and the fan 321, and reducing the overall thickness of the air circulation device 300.

[0175] Next, with reference to Figure 1 , Figure 2 , Figure 7 and Figure 10 , the working principle of the air circulation device 300 in some embodiments of the present invention will be briefly described.

[0176] When the air circulation device 300 works, the rotating fan 321 drives air to enter the air inlet cavity 3105 from the three air inlets 3101. Subsequently, the air blows from the air outlet 3102 to the windward side wall 111 of the storage compartment 110 after passing through the fan cavity 3104, and flows downward along the windward side wall 111. The air flowing downward along the windward side wall 111 will gradually spread, especially the air that flows to the bottom of the windward side wall 111 and loses kinetic energy, will spread horizontally to the entire storage compartment 110. Then, the air in the storage compartment 110 enters the air inlet cavity 3105 again through the three air inlets 3101. This cycle is repeated, so that the air in the storage compartment 110 circulates, and the temperature in the storage compartment 110 is evenly distributed along with the flowing air. At the same time, the temperature of the windward side wall 111 is relatively low, avoiding frosting on the windward side wall 111.

[0177] During this process, the air flowing through the sterilization module 340 is sterilized and purified by the sterilization module 340.

[0178] During this process, part of the air will also enter the blower cavity 3104 through the gaps of the spacer structure 313, the lighting cavity 3106, the confluence cavity 3107, the radial cavity part 31502 of the air inlet cavity 3105, and the axial cavity part 31051 of the air inlet cavity 3105 to cool the lighting module 350 and prevent the temperature of the lighting module 350 from being too high when it is working. And part of the air may also enter the air inlet cavity 3105 through the opening 3103 on the top side of the air circulation device 300.

[0179] When the direct-cooling refrigerator 001 detects that the door body 200 is opened, it powers on the lighting module 350 of the air circulation device 300, so that the lighting module 350 provides lighting for the storage compartment 110 where it is located.

[0180] For the direct-cooling refrigerator 001 without the transparent area 201 on the door body 200, when the direct-cooling refrigerator 001 detects that the door body 200 is opened, it powers on the atmosphere lamp 370 of the air circulation device 300, so that the user can intuitively know that the blower 321 is rotating by observing the atmosphere light emitted by the atmosphere lamp 370.

[0181] For the direct-cooling refrigerator 001 with the transparent area 201 on the door body 200, the direct-cooling refrigerator 001 can keep the atmosphere lamp 370 powered on.

[0182] Those skilled in the art can understand that this linkage form between the atmosphere lamp 370 and the blower 321 also enables the user to judge whether there is a fault in the air circulation device 300 by whether the atmosphere lamp 370 is lit or not.

[0183] So far, the technical solutions of the present utility model have been described in combination with multiple foregoing embodiments. However, those skilled in the art can easily understand that the protection scope of the present utility model is not limited to these specific embodiments. Without departing from the technical principle of the present utility model, those skilled in the art can split and combine the technical solutions in the above-mentioned various embodiments, and can also make equivalent changes or replacements to the relevant technical features. Any changes, equivalent replacements, improvements, etc. made within the technical concept and / or technical principle of the present utility model will fall within the protection scope of the present utility model.

[0184] Finally, it should be noted that the refrigerator of the present utility model is a refrigerator in a broad sense, which includes not only the commonly said refrigerator in a narrow sense, but also preservation equipment with refrigeration and / or freezing functions, such as refrigerated cabinets, freezers, etc.

[0185] In the present utility model, the term "communicate" means fluid communication to allow a fluid (such as air, liquid) to flow between two components that communicate with each other. And this "communication" can be such that the fluid flows between the two components that communicate with each other without leakage, or it can be such that the fluid flows between the two components that communicate with each other with a little leakage.

Claims

1. An air circulation device with lighting function, characterized in that: Applicable to a direct cooling refrigerator, the air circulation device comprises: A housing having an air inlet and an air outlet; a fan, arranged in the housing and used to drive air into the housing from the air inlet and out of the housing from the air outlet; A lighting module is mounted on the housing and is used to illuminate the storage compartment of the direct cooling refrigerator when the door of the direct cooling refrigerator is opened.

2. The air circulation device according to claim 1, characterized in that: The housing defines an air inlet cavity, a fan cavity for arranging the fan, and a lighting cavity for arranging the lighting module, the air inlet, the air inlet cavity, the fan cavity, and the air outlet are fluidically connected in sequence, and the lighting cavity is connected to the air inlet cavity; The air circulation device also includes a light-transmitting cover mounted on the shell and used to shield the lighting cavity. An air intake structure connected to the lighting cavity is provided between at least one of the light-transmitting cover and the shell or both of them, so that air can enter the lighting cavity from the air intake structure under the action of the fan to cool the lighting module.

3. The air circulation device according to claim 2, characterized in that: The air intake structure is a gap formed between the housing and the light-transmitting cover.

4. The air circulation device according to claim 3, characterized in that: The air circulation device further comprises an ambient light arranged at the front side of the light-transmitting cover and a light guide cover at least a part of which is arranged in the gap, and the light guide cover is used to evenly diffuse the light emitted by the ambient light.

5. The air circulation device according to claim 2, characterized in that: The air inlet cavity comprises a top side cavity located at the top side of the fan cavity and a front side cavity located at the front side of the fan cavity; The lighting cavity is located at the front side of the front cavity.

6. The air circulation device according to claim 5, characterized in that: The air inlets are arranged on the left side and the right side of the top cavity and the bottom side of the front cavity.

7. The air circulation device according to any one of claims 2 to 6, characterized in that: The top side of the air inlet cavity is provided with an opening, and the peripheral edge of the opening is used to abut against the peripheral wall of the storage compartment of the direct cooling refrigerator, so that the negative pressure generated by the fan when working can attract the air circulation device to the peripheral wall of the storage compartment or form an air cushion between the air circulation device and the peripheral wall of the storage compartment; and / or, The light-transmitting cover comprises an upper inclined plate extending obliquely upward and backward from its front end and abutting against the top wall of the lighting cavity, and a lower inclined plate extending obliquely downward from its front end, and the upper inclined plate is connected to the lower inclined plate.

8. The air circulation device according to any one of claims 1 to 6, characterized in that: The air circulation device further comprises a plurality of guide plates arranged in sequence in the air outlet in a transverse direction, and the interval between two adjacent guide plates is recorded as a plate interval; In the lateral direction of the air outlet, the plate spacing is smaller on the side close to the air outlet where the wind pressure is larger, and the plate spacing is larger on the side close to the air outlet where the wind pressure is smaller.

9. A direct cooling refrigerator, characterized in that: include: A box body, defining at least one storage compartment; A door body, used to shield the storage compartment; The air circulation device according to any one of claims 1 to 8 is arranged in the storage compartment and is used to drive the air circulation flow in the storage compartment to prevent frost from forming on the side walls of the storage compartment.

10. The direct cooling refrigerator according to claim 9, characterized in that: The direct cooling refrigerator is configured to light up the lighting module when the door is opened, and to turn off the lighting module when the door is closed.

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