Air duct assembly and refrigeration equipment

Abstract

This invention relates to the field of refrigeration equipment technology, and provides an air duct assembly and a refrigeration device. The air duct assembly includes a partition component, an air duct component, an evaporator, a drain plate, and a heating element. The air duct component is located below the partition component, and the air duct component and the partition component form a connected first cavity, an air inlet, and an air outlet. The evaporator is disposed in the first cavity, and the angle between the evaporator and the horizontal direction is less than or equal to a preset angle, or the evaporator is parallel to the horizontal plane. The drain plate is disposed in the first cavity, located below the evaporator, and has an outlet and a water guide portion recessed relative to the top surface of the drain plate. The water guide portion communicates with the outlet, and the extending direction of the water guide portion forms a first angle with the direction from the air inlet to the air outlet. The heating element is disposed on the surface of the drain plate. The air duct assembly proposed in this invention, with the evaporator, drain plate, and heating element working together, reduces the height of the air duct assembly, thereby reducing the volume of the air duct assembly.

Description

Technical Field

[0001] This invention relates to the field of refrigeration equipment technology, and more particularly to air duct components and refrigeration equipment. Background Technology

[0002] With the improvement of living standards, consumers have increasingly higher demands for refrigerator storage space, making its size a key concern. Increasing storage space within a refrigerator without changing its overall volume has become a research and development direction for engineers. The refrigeration system components occupy a portion of the cabinet's volume, and their installation location affects the cabinet's overall size and limits the available storage space. For example, placing the evaporator at the rear of the refrigerator's cooling compartment results in a thicker cabinet and insufficient storage space in the depth direction. While placing the evaporator horizontally between two compartments avoids occupying rear space, the assembled height of the evaporator, drain plate, and other components is significant, requiring more space within the refrigeration unit and limiting storage space. Therefore, the structure of the refrigeration system needs optimization. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in related technologies. To this end, this invention proposes a duct assembly in which an evaporator, a drain plate, and a heating element work together to reduce the height of the duct assembly, thereby reducing its volume. When the duct assembly is installed in a refrigeration unit, the space occupied by the duct assembly in the refrigeration unit can be reduced, thereby increasing the storage space of the refrigeration unit.

[0004] The present invention also proposes a refrigeration device.

[0005] According to a first aspect of the present invention, a duct assembly includes:

[0006] partition components;

[0007] The air duct component is located below the partition component and forms a first cavity, an air inlet, and an air outlet that are connected to the partition component.

[0008] An evaporator is disposed in the first cavity, and the angle between the evaporator and the horizontal direction is less than or equal to a preset angle, or the evaporator is parallel to the horizontal direction;

[0009] A drain plate is disposed in the first cavity, located below the evaporator, and has an outlet and a water guide portion recessed relative to the top surface of the drain plate. The water guide portion is connected to the outlet, and the extending direction of the water guide portion forms a first angle with the direction from the air inlet to the air outlet.

[0010] A heating element is disposed on the surface of the drainage plate.

[0011] According to the air duct assembly of the present invention, the evaporator is horizontally placed in the first cavity, and the angle of inclination of the evaporator is less than or equal to a preset angle, so that the height of the evaporator is less than or equal to a preset height, thereby reducing the height of the evaporator. The drain plate is provided with a water guiding part, which can play the role of drainage and air guiding. The drain plate can be arranged parallel to the evaporator. By setting a heating element on the drain plate for defrosting heating, the volume occupied by the defrosting heating structure can be reduced, thereby reducing the height of the air duct assembly from multiple aspects, while also meeting the requirements of air circulation and heat exchange, and the structure is simple.

[0012] According to one embodiment of the present invention, the heating element covers the lower surface of the drainage plate.

[0013] According to one embodiment of the present invention, the water guiding portion extends to both sides of the preset surface to the edge of the drainage plate, so that the edge of the drainage plate forms an opening, the opening being the outlet, and the opening communicating with the first drainage component.

[0014] According to one embodiment of the present invention, the depth of the water guide portion recess increases in the direction closer to the opening.

[0015] According to one embodiment of the present invention, the first drainage component is configured with the air inlet.

[0016] According to one embodiment of the present invention, the drainage plate further includes a drainage portion recessed relative to the top surface, the water guiding portion communicating with the drainage portion, the extending direction of the water guiding portion forming a first angle with the extending direction of the drainage portion, and the drainage portion forming the outlet.

[0017] According to one embodiment of the present invention, the depth of the water guide portion recess gradually increases or remains constant in the direction closer to the drainage portion.

[0018] According to one embodiment of the present invention, the bottom of the water guide portion is inclined along a first direction toward the direction of the drainage portion, and the first direction forms a sixth angle with the top surface of the drainage plate, so as to increase the depth of the recess of the water guide portion.

[0019] According to one embodiment of the present invention, the depth of the drainage section recess gradually increases towards the direction of the outlet.

[0020] According to one embodiment of the present invention, a plurality of water guiding parts are provided along the direction from the air inlet to the air outlet.

[0021] According to an embodiment of the second aspect of the present invention, a refrigeration device includes a cabinet and an air duct assembly as described above, the air duct assembly being disposed within the storage space of the cabinet and dividing it into a first compartment and a second compartment.

[0022] According to an embodiment of the refrigeration equipment of the present invention, the height of the air duct assembly inside the cabinet is reduced, which can expand the storage space inside the cabinet in order to provide a large-capacity refrigeration equipment.

[0023] According to one embodiment of the present invention, the air inlet includes a first air inlet and a second air inlet, the second air inlet is located on the front side of the air duct assembly and communicates with the second compartment, the first air inlet is located on at least one of the left and right sides of the air duct assembly, and the first air inlet communicates with the first compartment.

[0024] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a refrigeration device provided in an embodiment of the present invention. The door body is not shown in the figure.

[0027] Figure 2 This is a partial structural diagram of a refrigeration device provided in an embodiment of the present invention. The partial structure of the cabinet and the inner liner are not shown in the figure.

[0028] Figure 3 yes Figure 2 A magnified schematic diagram of the structure of part A in the diagram;

[0029] Figure 4 This is a partial structural schematic diagram of an air duct assembly provided in an embodiment of the present invention;

[0030] Figure 5 This is a partial structural exploded view of an air duct assembly provided in an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the exploded state structure of a duct assembly provided in an embodiment of the present invention;

[0032] Figure 7 This is a partial top view of a duct assembly provided in an embodiment of the present invention. The components above the drainage plate are not shown in the figure.

[0033] Figure 8 yes Figure 7 Schematic diagram of the cross-sectional structure of the middle BB;

[0034] Figure 9 This is a side view of a partial structure of an air duct assembly provided in an embodiment of the present invention;

[0035] Figure 10 This is a partial structural schematic diagram of another refrigeration device provided in an embodiment of the present invention, and... Figure 2 The main difference lies in the structure of the drainage board; the door is not shown in the diagram.

[0036] Figure 11 yes Figure 10 A magnified schematic diagram of the central C section;

[0037] Figure 12 This is a partial structural schematic diagram of another air duct assembly provided in an embodiment of the present invention. The components above the drainage plate are not shown in the figure.

[0038] Figure 13 This is a schematic diagram showing a partial structural decomposition of another air duct component provided in an embodiment of the present invention;

[0039] Figure 14 This is a longitudinal sectional view of the third type of air duct assembly provided in this embodiment of the invention, to show the position of the fan;

[0040] Figure 15 This is a partial structural schematic diagram of the third type of air duct assembly provided in an embodiment of the present invention. The components above the drainage plate are not shown in the figure.

[0041] Figure 16 This is a schematic diagram showing a partial structural decomposition of the third type of air duct component provided in this embodiment of the invention;

[0042] Figure 17 This is a structural schematic diagram of the third type of refrigeration equipment provided in the embodiment of the present invention. The door body is not shown in the figure.

[0043] Figure 18 This is a longitudinal sectional view of the third type of refrigeration equipment provided in this embodiment of the invention;

[0044] Figure 19 yes Figure 18 A magnified schematic diagram of the structure of part D in the middle;

[0045] Figure 20 This is a schematic diagram of the exploded state structure of the fourth type of air duct component provided in the embodiments of the present invention;

[0046] Figure 21 This is a bottom view of the fourth type of air duct assembly provided in this embodiment of the invention;

[0047] Figure 22 This is a three-dimensional structural schematic diagram of the drainage board provided in an embodiment of the present invention;

[0048] Figure 23 This is a top view of the drainage board provided in an embodiment of the present invention;

[0049] Figure 24 yes Figure 23 Schematic diagram of the cross-sectional structure of the middle EE;

[0050] Figure 25 yes Figure 23 Schematic diagram of the cross-sectional structure of the middle FF;

[0051] Figure 26 This is a structural schematic diagram of the second plate body and its installation state in the partition component of the air duct assembly provided in the embodiment of the present invention;

[0052] Figure 27 This is a structural schematic diagram of another second plate body and its installation state in the partition component of the air duct assembly provided in the embodiment of the present invention;

[0053] Figure 28 This is a schematic diagram of the structure of the first and second recessed portions of the second plate in the partition component of the air duct assembly provided in the embodiment of the present invention.

[0054] Figure 29 This is a schematic diagram of the third recessed portion of the second plate in the partition component of the air duct assembly provided in this embodiment of the invention;

[0055] Figure 30 This is a three-dimensional structural diagram of the evaporator and drain plate installation state provided in an embodiment of the present invention;

[0056] Figure 31 This is a side view of the evaporator and drain plate installation state provided in an embodiment of the present invention;

[0057] Figure 32 This is one of the exploded state diagrams of the evaporator, drain plate and heating element provided in the embodiments of the present invention;

[0058] Figure 33 This is the second exploded view of the evaporator, drain plate and heating element provided in the embodiment of the present invention;

[0059] Figure 34 This is a schematic diagram of the installation status of the evaporator, drain plate and second heater provided in an embodiment of the present invention;

[0060] Figure 35 This is a schematic diagram showing the disassembled state of the evaporator, drain plate, and second heater provided in an embodiment of the present invention;

[0061] Figure 36 This is a schematic diagram of the installation status of the evaporator, drain plate, and air duct components provided in an embodiment of the present invention;

[0062] Figure 37 This is a schematic diagram of the structure of the first support portion in the air duct component provided in an embodiment of the present invention;

[0063] Figure 38 yes Figure 37 A magnified schematic diagram of the structure of part H in the middle.

[0064] Figure label:

[0065] 100. Drainage plate; 110. Drainage section; 111. First drainage section; 112. Second drainage section; 113. Second guide surface; 114. Outlet; 115. Third drainage section; 120. First water guide section; 121. First guide surface; 123. First water guide area; 124. Second water guide area; 130. Second water guide section; 131. Third guide surface; 140. Third water guide section; 141. Fourth guide surface; 150. Flanged edge; 151. Positioning part; 160. Heating element; 170. Opening;

[0066] 200. Air duct assembly; 201. First air inlet; 202. Second air inlet; 203. First exhaust outlet; 204. Second exhaust outlet;

[0067] 210. Partition component; 211. First plate; 212. Second plate; 2121. First recess; 2122. First guide surface; 2123. First top surface; 2124. Second recess; 2125. Second guide surface; 2126. Second top surface; 2127. Third recess; 2128. Third top surface; 2129. Third guide surface; 213. First insulation layer; 214. Third plate; 215. Third wall panel;

[0068] 220. Air duct component; 221. Second insulation layer; 222. First support part; 2221. Separator part; 2222. Guide surface; 22221. Curved surface part; 22222. Flat surface part; 2223. Baffle plate; 2224. Second support inclined surface; 2225. Second support groove; 223. Water guide; 2231. Third drain pipe; 224. Third insulation layer; 225. Second support part; 226. Heating component;

[0069] 230. Evaporator; 231. First heater; 232. Second heater; 233. Heat exchange tube; 234. Heat sink; 2341. First heat sink; 2342. Second heat sink; 23421. Ventilation section; 2343. Mounting hole;

[0070] 240. Fan cover; 241. First cover; 2411. Guide surface; 242. Second cover; 2421. First water guide channel; 2422. Baffle; 2423. Third drain outlet; 2424. First air guide section; 2425. Second air guide section; 2426. Second mounting column; 2427. Partition plate; 2428. Water collection section; 243. Fan cover plate; 2431. Third air guide section; 2432. Fourth air guide section; 244. Ventilation opening;

[0071] 250. First air intake;

[0072] 260. First drainage component; 262. First drain outlet; 263. First drain pipe; 264. First wall panel; 265. Second wall panel;

[0073] 270. Fan; 271. Fan mounting bracket;

[0074] 281. Second cavity; 282. First cavity;

[0075] 290. Second drainage component; 291. Second drainage pipe;

[0076] 400. Cabinet; 410. First compartment; 420. Second compartment; 430. Return air unit;

[0077] α1, the first included angle; α2, the second included angle; α3, the third included angle;

[0078] θ2, the sixth included angle; θ3, the seventh included angle. Detailed Implementation

[0079] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0080] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the embodiments of the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise stated, "multiple," "multiple roots," and "multiple groups" mean two or more.

[0081] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0082] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0083] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0084] Embodiments of the present invention, in conjunction with Figures 1 to 38 As shown, a refrigeration device is provided, including a cabinet 400, which includes a cabinet liner.

[0085] Refrigeration equipment can be various types of equipment such as refrigerators, freezers, display cases, vending machines, or wine cabinets. Refrigeration equipment can be used for refrigeration or freezing.

[0086] In the following embodiments, the directions of front, back, left, right, up, and down correspond one-to-one with the directions of the refrigeration equipment.

[0087] An embodiment of the present invention provides a box liner, which includes a box liner body and an air duct assembly 200. The space inside the box liner body is divided into a first compartment 410 and a second compartment 420 that are independent of each other by the air duct assembly 200.

[0088] The air duct assembly 200 serves to separate compartments and also circulate air. It should be noted that, in order to ensure the independence of the first compartment 410 and the second compartment 420, the installation point between the air duct assembly 200 and the housing body must be sealed to prevent air leakage between the first compartment 410 and the second compartment 420.

[0089] An embodiment of the present invention provides an air duct assembly 200, which can divide the entire space inside the box body into two parts: a first compartment 410 and a second compartment 420. Alternatively, the air duct assembly 200 can divide a local space inside the box body into two parts: a first compartment 410 and a second compartment 420.

[0090] The air duct assembly 200 independently supplies air to the first compartment 410 and the second compartment 420. The functions of the first compartment 410 and the second compartment 420 can be the same or different. When the functions of the first compartment 410 and the second compartment 420 are different, that is, the ambient temperatures within the first compartment 410 and the second compartment 420 are different (the first compartment 410 can be a refrigerator compartment, and the second compartment 420 can be a freezer compartment), the air duct assembly 200 supplies air to the refrigerator compartment at a lower frequency than the air supplied to the freezer compartment. When the functions of the first compartment 410 and the second compartment 420 are the same, such as both being refrigerator compartments, the ambient temperatures of the two refrigerator compartments can be the same or different. In this case, the air duct assembly 200 supplies air to the two refrigerator compartments at the same or different frequencies, which can be set as needed. Of course, the functions of the compartments separated by the air duct assembly 200 are not limited to refrigerator and freezer; they can also be variable temperature compartments or other functional compartments, which can be set as needed.

[0091] When the cabinet 400 is connected to the door, and the door is in the closed position of the cabinet 400, the first compartment 410 and the second compartment 420 are two enclosed and independent spaces; when the door is in the open position of the cabinet 400, items can be taken out or put in at least one of the first compartment 410 and the second compartment 420.

[0092] The number of air duct components 200 installed in the refrigeration equipment can be set as needed.

[0093] It is understandable that, such as Figures 2 to 3 , Figure 10 , Figure 11 as well as Figures 17 to 20As shown, the air duct assembly 200 includes a baffle component 210, an air duct component 220, an evaporator 230, and a drain plate 100. The baffle component 210 is located above the air duct component 220. The baffle component 210 and the air duct component 220 form a first cavity 282, an air inlet adapted to communicate with the first cavity 282, and an air outlet adapted to communicate with the first cavity 282. The evaporator 230 and the drain plate 100 are disposed inside the first cavity 282, and the drain plate 100 is located below the evaporator 230. The baffle component 210 and the air duct component 220 together restrict the interconnected air inlet, the first cavity 282, and the air outlet so that the air entering the air duct assembly 200 is discharged after heat exchange.

[0094] like Figure 1 and Figure 2 As shown, the partition component 210 is connected to the liner body, and the connection between the partition component 210 and the liner body is sealed to divide the space inside the liner body into two independent chambers: a first chamber 410 and a second chamber 420. The first cavity 282 between the partition component 210 and the air duct component 220 is used to install components such as the evaporator 230, the drain plate 100, and the heating structure for defrosting, to meet the heat exchange requirements of the first chamber 410 and the second chamber 420.

[0095] The air duct assembly 200 has two air inlets: a first air inlet 201 and a second air inlet 202. The air outlets of the air duct assembly 200 are also divided into a first exhaust outlet 203 and a second exhaust outlet 204. The first air inlet 201, the first cavity 282, and the first exhaust outlet 203 communicate with the first chamber 410 to form a first circulation path. The second air inlet 202, the first cavity 282, and the second exhaust outlet 204 communicate with the second chamber 420 to form a second circulation path. At least one of the first and second circulation paths is connected to supply air to both the first chamber 410 and the second chamber 420. The number and location of the first air inlet 201, the second air inlet 202, the first exhaust outlet 203, and the second exhaust outlet 204 are not limited.

[0096] like Figure 1 and Figure 2As shown, the first compartment 410 is located above the air duct assembly 200 and is configured as a refrigerator compartment. The second compartment 420 is located below the air duct assembly 200 and is configured as a freezer compartment. That is, the first compartment 410 is located above the second compartment 420. The air duct assembly 200 is provided with a first air outlet 203 facing upwards and a second air outlet 204 facing downwards. A first damper 250 is provided at the first air outlet 203 for opening and closing adjustment; a second damper is provided at the second air outlet 204 for opening and closing adjustment. The air duct assembly 200 has a first air inlet 201 and a second air inlet 202 located near the front end. The first air inlet 201 is connected to the return air duct of the refrigerator compartment and is located on the left and right sides of the air duct assembly 200. The second air inlet 202 is connected to the freezer compartment and is located on the front or lower side of the air duct assembly 200.

[0097] It should be noted that the first air inlet 201 and the second air inlet 202 are close to the same end of the air duct assembly 200, and the first air outlet 203 and the second air outlet 204 are also close to the same end of the air duct assembly 200. The air inlets and outlets are generally at opposite ends, such as the air inlet being close to the front end and the air outlet being close to the rear end, but the aforementioned positions are not limited. The air inlets can also be close to the left or right end. The positions of the air inlets and outlets are flexible and can be selected according to the specific needs.

[0098] In some cases, the first air inlet 201 is located on the first side of the first cavity 282, and the second air inlet 202 is located on the second side of the first cavity 282. The first side and the second side are adjacent, that is, the first air inlet 201 and the second air inlet 202 are located on different sides of the air duct assembly 200. In this case, the air intake from the first air inlet 201 and the air intake from the second air inlet 202 will converge in the first cavity 282. When the first air inlet 201 and the second air inlet 202 have different air intake temperatures (that is, the ambient temperatures of the first chamber 410 and the second chamber 420 are different), the point where the air intake from the first air inlet 201 and the air intake from the second air inlet 202 converges is prone to frost due to contact heat exchange. The fact that the first air inlet 201 and the second air inlet 202 are located on different sides of the air duct assembly 200 can also be understood as the first air inlet 201 and the second air inlet 202 forming an angle.

[0099] like Figure 6 As shown, the first side is at least one of the left and right sides, and the second side is the front side.

[0100] Below, in conjunction with Figures 1 to 16 as well as Figures 20 to 25As shown, an embodiment of the drainage plate 100 is provided. Taking the drainage plate 100 installed in the aforementioned air duct assembly 200 as an example, the structure of the drainage plate 100 will be described. However, the drainage plate 100 is not limited to being installed in the aforementioned air duct assembly 200. Other structures suitable for installing the drainage plate 100 in the following embodiment can also be used to install the drainage plate 100 described below.

[0101] Embodiments of the present invention, in conjunction with Figures 1 to 7 As shown, a drainage plate 100 is provided. The drainage plate 100 is constructed with a water guiding portion that is recessed downward relative to the top surface of the drainage plate 100. The water guiding portion extends to both sides of the preset surface to the edge of the drainage plate 100 so that the edge of the drainage plate 100 forms an opening 170. The opening 170 faces the side where the first air inlet 201 is located, so that part of the air entering the first air inlet 201 is suitable to flow into the first cavity 282 through the opening 170 and along the extension direction of the water guiding portion.

[0102] The function of the first air inlet 201 here is not limited. It can connect to the refrigerator compartment, and the water guide can direct the refrigeration air; or, the water guide can connect to the freezer compartment, and can also direct the freezing air. By setting the water guide and designing the drain plate with an inverted V-shaped structure, some of the refrigeration return air enters the evaporator through the V-shaped structure space, which solves the problem of condensation of the return air in the refrigerator, reduces the contact between the refrigeration return air and the freezing return air, reduces the accumulation and mixing of condensation between them, and makes the frost more evenly distributed in the evaporator, reducing the frost blockage of the freezing return air.

[0103] Part of the air intake at the first air inlet 201 is introduced into the first cavity 282 through the opening 170 and along the extension direction of the water guide. This can divert part of the air intake at the first air inlet 201, reducing the amount of airflow that intersects with the air intake at the second air inlet 202. This reduces the amount of frost that condenses due to the contact between the air intake at the first air inlet 201 and the air intake at the second air inlet 202, extends the interval between two defrost cycles, reduces the number of defrost cycles, reduces the power consumption required for defrosting, and reduces the power consumption of the refrigeration equipment.

[0104] The water guide section is recessed downward relative to the top surface of the drainage plate 100, which makes the drainage plate 100 form a groove. A portion of the air intake at the first air inlet 201 can flow along the groove into the interior of the first cavity 282, and the water guide section can guide the air inside.

[0105] The preset surface forms an angle with the extension direction of the water guide section. The preset surface extends from the air inlet to the air outlet. If the air inlet is located at the front end of the air duct assembly 200 and the air outlet is located at the rear end of the air duct assembly 200, then the preset surface extends from front to back. Here, the extension trend of the preset surface can be from front to back, and the preset surface can extend at an angle. The position of the preset surface can be selected as needed.

[0106] In some cases, the preset surface can be the symmetrical surface of the drainage board 100, and water guiding parts are symmetrically arranged on both sides of the preset surface, so that the drainage board 100 has a symmetrical structure and the structural stability of the drainage board 100 is better.

[0107] It should be noted that the preset surface is not limited to being a symmetrical surface, and the drainage board 100 is not limited to forming a symmetrical structure; the two sides of the preset surface may also be asymmetrical structures.

[0108] The opening 170 of the aforementioned drainage plate 100 can guide part of the air intake of the first air inlet 201, and the opening 170 of the drainage plate 100 can also drain water.

[0109] When the opening 170 of the drainage plate 100 serves to divert a portion of the incoming air, the depth of the water guide portion recessed relative to the top surface of the drainage plate 100 is not limited.

[0110] In some cases, the depth of the water guide portion gradually increases towards the opening 170; this type of water guide portion can be called the second water guide portion 130. That is, the end of the second water guide portion 130 facing the opening 170 has a greater depth, which helps guide airflow within it. When the evaporator 230 is placed above the drain plate 100, the gradually increasing depth of the second water guide portion 130 also increases the distance between the evaporator 230 and the drain plate 100, appropriately expanding the airflow space; it also helps the defrost water collected by the drain plate 100 to drain from the opening 170.

[0111] The depth of the second water guide section 130 gradually increases toward the end of the opening 170, which can be a continuous increase or a step-like increase.

[0112] Understandably, the bottom of the second water guide section 130 is inclined along a first preset direction towards the opening 170, and the first preset direction forms a first preset angle with the top surface of the drainage plate 100. That is, the bottom surface of the second water guide section 130 is an inclined surface extending downward along the first preset direction, which helps the airflow into the first cavity 282 and also facilitates drainage.

[0113] The first preset direction is a direction that forms a first preset angle with the top surface and is inclined downwards at a preset angle to the opening 170. The size of the first preset angle can be selected as needed.

[0114] In order to reduce the size of the drainage board 100 in the height direction, the first preset included angle can be less than or equal to 7°. The drainage effect and air guiding effect can meet the requirements, and the size of the air duct assembly 200 in the height direction can be reduced. This reduces the height space occupied by the air duct assembly 200 in the cabinet 400, which helps to increase the compartment space in the cabinet 400 so as to provide a large-capacity refrigeration equipment.

[0115] In some cases, the first preset included angle is set to 3°. 3° can meet the drainage requirements of the drainage board 100 and also significantly reduce the height of the drainage board 100, achieving drainage at a small angle. Of course, the first preset included angle can also be set to 1°, 2°, 4°, 5°, 6°, or 7°.

[0116] Of course, the depth of the second water guide recess can remain unchanged (not shown in the figure). Maintaining a consistent depth of the second water guide recess can also serve the functions of guiding air and draining water.

[0117] It is understood that the water guiding section includes a guiding surface provided along the extending direction of the water guiding section, and the guiding surface approaches the opposite side from the top surface to the bottom surface of the drainage plate 100. That is, the second water guiding section 130 is provided with a third guiding surface 131 along its extending direction, and the third guiding surface 131 approaches the opposite side from the top surface to the bottom surface of the drainage plate 100. The third guiding surface 131 is an inclined surface that slopes towards its opposite side.

[0118] The defrosting water received by the top surface of the drainage plate 100 and the third guide surface 131 can fall into the bottom of the water guide section along the guide direction of the third guide surface 131, so that the defrosting water can accumulate in the water guide section and the water in the water guide section can be discharged.

[0119] The side opposite to the third guide surface 131 can be a vertically arranged surface, or it can also be a guide surface, depending on the needs. Figure 5 and Figure 6 As shown, both opposite sides of the second water guiding section 130 are third guiding surfaces 131.

[0120] like Figures 5 to 7 As shown, a plurality of second water guiding parts 130 are provided on each side of the preset surface of the drainage plate 100. The plurality of second water guiding parts 130 are arranged in parallel, and a plurality of openings 170 are formed on both sides of the drainage plate 100 so that part of the air intake of the first air inlet 201 can enter the first cavity 282 through the plurality of openings 170.

[0121] At a preset height position, the width of the second water guide section 130 gradually decreases in the direction of the opening 170, so that the water collected in the second water guide section 130 can converge in the direction of the opening 170.

[0122] Combination Figures 1 to 7 As shown and described above, the drainage plate 100 having the second water guiding part 130 described above may not need to have a drainage part 110.

[0123] Combination Figures 1 to 16 , Figures 20 to 25As shown in the embodiment of the present invention, another drainage plate 100 is provided. The drainage plate 100 is constructed with a water guiding portion recessed relative to the top surface of the drainage plate 100. The extending direction of the water guiding portion forms a fourth angle with the air outlet direction above the drainage plate 100.

[0124] When the aforementioned drain plate 100 and evaporator 230 are both disposed within the first cavity 282 of the air duct assembly 200, air enters the first cavity 282 from the air inlet of the air duct assembly 200 and flows towards the exhaust port. The air within the first cavity 282 flows in the space between the drain plate 100 and the evaporator 230, as well as within the space inside the evaporator 230. When the air flows between the drain plate 100 and the evaporator 230, the water guide section forms a fourth angle θ1 with the air outlet direction, which can suppress the air from flowing directly from the water guide section to the exhaust port, thereby prolonging the time the air stays in the first cavity 282. This allows the air to fully contact the evaporator 230 and exchange heat, and the air after heat exchange is then discharged from the exhaust port, which helps to improve heat exchange efficiency.

[0125] The air outlet direction is from the air inlet to the air outlet. In some cases, only one air inlet and one air outlet are provided, forming a one-to-one correspondence and creating one air outlet direction. In other cases, at least one of the air inlets or exhaust outlets is provided, creating multiple air outlet directions. The extension direction of the water guide forms an angle with at least one air outlet direction, ensuring heat exchange efficiency in one direction. Of course, if the extension direction of the water guide forms an angle with all air outlet directions, it ensures effective heat exchange in multiple flow paths, guaranteeing heat exchange efficiency. The air inlet is generally located at the front end of the duct assembly 200, and the exhaust outlet is generally located at the rear end of the duct assembly 200, so the air outlet direction can be from front to back.

[0126] When the air inlet is divided into a first air inlet 201 and a second air inlet 202, the second air inlet 202 is located in front of the air duct assembly 200, and the exhaust outlet is located behind the air duct assembly 200. The connection path between the second air inlet 202 and the exhaust outlet forms the first air outlet direction. The second air inlet 202 corresponds to the lower position of the evaporator 230, so the air flows in the direction from bottom to top and from front to back.

[0127] In this embodiment, the water guide section of the drainage plate 100 forms an angle with the first air outlet direction, that is, the water guide section forms an angle with the front-to-back direction. The first air inlet 201 can be located on at least one of the left and right sides of the duct assembly 200. The connection path between the first air inlet 201 and the exhaust outlet forms a second air outlet direction, and the water guide section's extension direction also forms an angle with the second air outlet direction. The angle formed by the water guide section's extension direction and the first air outlet direction, and the angle formed by the water guide section's extension direction and the second air outlet direction, can both be understood as a fourth angle, but the specific angle values ​​can be the same or different.

[0128] The extension direction of the water guide can be a straight path or a curved path. When the extension path of the water guide is a straight path, the path from the end of the water guide away from the drain 110 to the other end of the water guide connecting to the drain 110 is the extension path; when the extension path of the water guide is a curved path, the water guide of the curved path can have multiple ends connected to the drain 110, the curved path can be a broken line path formed by connecting multiple straight paths, or the curved path can be a curve with one or more radii of curvature, and the shape of the curved path can be set as needed. The extension direction of a water guide can form one or more angles with the air outlet direction, that is, the fourth angle can be one or more angle values, which can be set as needed. Figures 10 to 25 As shown in the embodiment of the present invention, another drainage plate 100 is provided. The drainage plate 100 is constructed with a drainage part 110 and a water guiding part. The drainage part 110 is constructed with an outlet 114. The drainage part 110 is recessed relative to the top surface of the drainage plate 100. The water guiding part is connected to the drainage part 110. The water guiding part is recessed relative to the top surface of the drainage plate 100. The extending direction of the water guiding part forms a fifth included angle θ1 with the air outlet direction above the drainage plate 100.

[0129] In operation, the drain plate 100 is positioned below the evaporator 230 to collect defrost water generated when frost on the surface of the evaporator 230 is heated. A portion of the water falls into the water guide section and is directed along its extension direction into the drain section 110. Multiple water guide sections are typically provided, and the water collected by each section converges into the drain section 110 and is discharged through the outlet 114 of the drain section 110. The remaining water falls directly into the drain section 110 and is discharged through it.

[0130] The difference between the fifth and fourth included angles lies in the fact that, in a drainage plate that has both a water guiding section and a drainage section, the angle formed by the extension direction of the water guiding section and the air outlet direction is the fifth included angle; while in a drainage plate that only has a water guiding section, the angle formed by the extension direction of the water guiding section and the air outlet direction is the fourth included angle. The angle values ​​of the fifth and fourth included angles can be selected as needed and are not limited here.

[0131] Figure 23 The solid arrow above the drainage plate 100 indicates the extension direction of the water guide, the dashed arrow indicates the air outlet direction, and the fifth included angle θ1 is marked. The figure shows the case where the fifth included angle is 90°.

[0132] It should be noted that both the water guiding section and the drainage section 110 are recessed based on the top surface of the drainage plate 100. The top surface can be a plane or a curved surface, and can be a surface defined by multiple lines or multiple surfaces. Correspondingly, the bottom of the water guiding section and the bottom of the drainage section 110 form the bottom surface of the drainage plate 100. The bottom surface can also be a plane or a curved surface, and can be a surface defined by multiple lines or multiple surfaces. The upper surface of the drainage plate 100 is the entire surface of the drainage plate 100 facing upwards, and the top surface is a part of the upper surface; the lower surface of the drainage plate 100 is the entire surface of the drainage plate 100 facing downwards, and the bottom surface is a part of the lower surface.

[0133] In this embodiment, the drainage plate 100 has a water guiding part and a drainage part 110 that cooperate to discharge the collected water, solving the drainage problem inside the air duct assembly 200. Furthermore, by setting the water guiding part to form an angle between its extension direction and the air outlet direction of the air duct assembly 200, the time that the air stays in the air duct assembly 200 can be extended, which means extending the heat exchange time, thereby improving the heat exchange efficiency and meeting the cooling needs of the refrigeration equipment. The drainage plate 100 also has a simple structure.

[0134] In the structure of the drainage plate 100 of this embodiment, when the depth of the water guiding portion recessed downward relative to the top surface of the drainage plate 100 remains unchanged, and the drainage plate 100 is constructed with a drainage portion 110 recessed relative to the top surface of the drainage plate 100, this water guiding portion can be referred to as the third water guiding portion 140. Figures 11 to 13 As shown, the drainage section 110 is constructed with an outlet 114. The third water guide section 140 is connected to the drainage section 110. The defrosting water received by the third water guide section 140 can be discharged from the opening 170 at the end of the drainage plate 100, and can also be discharged from the outlet 114 of the drainage section 110, realizing multi-directional drainage. The structure is simple and the drainage effect is good.

[0135] At this point, the evaporator 230 and the drain plate 100 can be placed horizontally, which can complete the discharge of defrost water and reduce the height of the air duct assembly 200. If the evaporator 230 and the drain plate 100 are both set to drain downwards, the downward tilt angle of the evaporator 230 and the drain plate 100 can be reduced (the downward tilt angle of the evaporator 230 and the drain plate 100 can be less than or equal to 7°), thereby reducing the height dimension of the air duct assembly 200 and increasing the internal capacity of the refrigeration equipment.

[0136] The outlet 114 of the drainage section 110 and the exhaust port are located on the same side of the first cavity 282. The drainage section and the exhaust section are located on the same side of the first cavity 282, which facilitates the integration of the drainage structure and the exhaust structure.

[0137] When a fan 270 is installed inside the air duct assembly 200, and the fan 270 and the exhaust port are located on the same side, that is, the outlet 114, the exhaust port and the fan 270 are all located on the same side, the defrosting water of the fan 270 can be discharged together with the defrosting water of the drain plate 100.

[0138] Along the extension direction of the drain section 110, multiple third water guide sections 140 are arranged side by side on both sides of the drain section 110. The multiple third water guide sections 140 are distributed below the evaporator 230 so as to receive defrost water at multiple positions below the evaporator 230, which helps to drain water quickly.

[0139] Multiple drainage sections 110 can be provided, and these drainage sections 110 can be parallel or form an angle. With the area of ​​the drainage plate 100 remaining constant, the more drainage sections 110 there are, the shorter the length of the third water guide section 140, which helps the water collected by the third water guide section 140 to converge within the drainage section 110, thereby shortening the defrosting drainage time. When multiple drainage sections 110 are provided, the third water guide section 140 near the edge of the drainage plate has an opening, and the other third water guide sections 140 communicate with the drainage section 110.

[0140] Understandably, the depth of the recess in the drainage section 110 gradually increases towards the outlet 114, so that the water in the drainage section 110 flows to the outlet 114 under the action of gravity.

[0141] It is understandable that the bottom of the drainage section 110 is inclined along the second direction, and the second direction forms a seventh angle θ3 with the top surface of the drainage plate 100. That is, the bottom of the drainage section 110 is inclined, and the water in the drainage section 110 collects along the inclined path (second direction) to the outlet 114 and is discharged, which has a good drainage effect and can avoid the problem of local water accumulation; and the water can flow smoothly.

[0142] When the top surface of the drainage plate 100 is horizontally positioned, it can be understood that the second direction forms a seventh angle θ3 with the horizontal plane. Along the top surface of the drainage plate 100, a drainage section 110 gradually recesses downwards towards the outlet 114. At this time, the seventh angle θ3 is the angle between the bottom of the drainage section 110 and the horizontal plane, and the second direction is a downward-sloping direction.

[0143] The bottom of the drainage section 110 can be a sloping line or a sloping surface. In some cases, the bottom of the drainage section 110 is a sloping surface, which can be a plane or a curved surface, depending on the specific needs.

[0144] In some cases, the bottom of the drainage section 110 may not form a continuous slope or ramp, such as a stepped shape, yet it can still meet drainage requirements.

[0145] It is understandable that the seventh included angle θ3 can be less than or equal to 7°. A small seventh included angle θ3 helps to reduce the distance between the top surface and the bottom surface of the drainage plate 100, enabling drainage at a small angle. This reduces the size of the air duct assembly 200 in the height direction, shrinks the space occupied by the air duct assembly 200, and helps to increase the storage space of the refrigeration equipment, thus providing a large-capacity refrigeration equipment.

[0146] It should be noted that the seventh included angle θ3 can also be greater than 7°. Since the area occupied by the drainage part 110 of the drainage plate 100 is small, the downward tilt angle of the drainage part 110 is slightly larger, which has little impact on the overall volume of the drainage plate 100. Therefore, the angle of the seventh included angle θ3 is not strictly limited.

[0147] In some cases, such as Figure 12 As shown, the depth of the recess in the drainage section 110 remains unchanged. At this time, the drainage section can be referred to as the third drainage section 115. The drainage plate 100 is inclined towards the outlet 114 to facilitate drainage. If the outlet 114 is located at the rear end of the air duct assembly 200, the drainage plate 100 is inclined downward from front to back so that the water in the drainage section 110 flows backward and is discharged.

[0148] like Figure 11 and Figure 12 As shown, the third water guiding section 140 includes a fourth guiding surface 141 disposed along the extending direction of the third water guiding section 140. From the top surface of the drain plate 100 towards the bottom surface, the fourth guiding surface 141 approaches its opposite side. The fourth guiding surface 141 can guide the defrosting water received by the top surface of the drain plate 100 and the fourth guiding surface 141 to the bottom of the third water guiding section 140 so that the water in the third water guiding section 140 can be discharged.

[0149] From the bottom to the top of the drainage plate 100, the fourth guide surface 141 is inclined toward the outlet 114. When the drainage plate 100 is inclined toward the outlet 114, the amount of water collected in the third water guide section 140 is relatively large, so the fourth guide surface 141 can guide the water backward, guiding a portion of the water to be discharged from the rear.

[0150] In this embodiment of the invention, combined with Figures 20 to 25 As shown, the depth of the water guide portion gradually increases in the direction towards the drainage portion 110, and this water guide portion can be referred to as the first water guide portion 120. The depth of the first water guide portion 120 gradually increases in the direction towards the drainage portion 110, so that water flows to the drainage portion 110 under the action of gravity and is discharged from the outlet 114 of the drainage portion 110.

[0151] It is understandable that, facing the drain section 110, the bottom of the first water guiding section 120 is inclined along the first direction, and the first direction forms a sixth included angle θ2 with the top surface of the drain plate 100. That is, the bottom of the first water guiding section 120 is inclined, and the water in the first water guiding section 120 collects into the drain section 110 along the inclined path (first direction), which has a good drainage effect and can avoid the problem of local water accumulation; and the water can flow smoothly.

[0152] When the top surface of the drainage plate 100 is horizontally positioned, it can be understood that the first direction forms a sixth angle θ2 with the horizontal plane. Along the top surface of the drainage plate 100, a first water-guiding section 120 is formed by gradually recessing downwards from the end furthest from the drainage section 110 towards the position communicating with the drainage section 110. At this time, the sixth angle θ2 is the angle between the bottom of the first water-guiding section 120 and the horizontal plane, and the first direction is a downward-sloping direction.

[0153] The bottom of the first water guiding part 120 can be a sloping line or a sloping surface. In some cases, the bottom of the first water guiding part 120 is a sloping surface, which can be a plane or a curved surface, depending on the specific needs.

[0154] In some cases, the bottom of the first water guiding section 120 does not form a continuous slope or slope, such as a stepped shape, but it can still meet the water guiding requirements.

[0155] It is understandable that the sixth included angle θ2 is less than or equal to 7°. The small angle of the sixth included angle θ2 helps to reduce the distance between the top surface and the bottom surface of the drainage plate 100, which can achieve drainage at a small angle. This reduces the size of the air duct assembly 200 in the height direction, reduces the space occupied by the air duct assembly 200, and helps to increase the storage space of the refrigeration equipment, thus providing a large-capacity refrigeration equipment.

[0156] In some cases, the sixth included angle θ2 is set to 3°. 3° can meet the drainage requirements of the drainage board 100 and also significantly reduce the height of the drainage board 100, achieving drainage at a small angle. Of course, the sixth included angle can also be 1°, 2°, 4°, 5°, or 6°.

[0157] In some cases, the difference between the first water guide 120 and the third water guide 140 mentioned above is that the first water guide 120 is inclined toward the drainage section 110 inside the drainage plate 100, while the third water guide 140 is inclined toward the end of the drainage plate 100. That is, the inclination direction is different, but other structures and parameters can be set to be the same, such as the inclination angle can be the same.

[0158] It is understandable that the bottom surfaces of the drainage plates 100 are coplanar, which makes the bottom surface of the drainage plates 100 more flat, and the drainage plates 100 have a simple appearance and are easy to position and install.

[0159] The parallel arrangement here can be understood as multiple water guides arranged sequentially on one side of the extension direction of the drainage section 110. Generally, multiple water guides are arranged in parallel on both sides of the drainage section 110, meaning the drainage section 110 is positioned between two rows of water guides. Of course, when the drainage section 110 is located at the end of the drainage plate 100, the water guides are only located on one side of the drainage section 110.

[0160] Understandably, the extension direction of the water guide is perpendicular to the air outlet direction, which effectively prolongs the time the air stays in the first cavity 282 to ensure sufficient heat exchange.

[0161] It is understandable that the extension direction of the drain section 110 forms an eighth angle with the air outlet direction, which minimizes the amount of air discharged along the extension direction of the drain section 110 and also prolongs the time that the air stays in the first cavity 282, thus ensuring the heat exchange effect.

[0162] Of course, the drainage section 110 can also extend along the air outlet direction, and water guide sections can be symmetrically arranged on both sides of the drainage section 110 to facilitate uniform and stable water guiding on both sides of the drainage section 110.

[0163] like Figure 20 and Figure 25 As shown, when the drainage section 110 extends along the air outlet direction, the water guide section is perpendicular to the air outlet direction to minimize the amount of air entering the water guide section.

[0164] It is understandable that, such as Figure 24 and Figure 25 As shown, the depth of the recess in the drainage section 110 is greater than or equal to the depth of the recess in the water guiding section. That is, the minimum depth of the drainage section 110 needs to be greater than or equal to the maximum depth of the water guiding section so that the water in the water guiding section can converge into the drainage section 110 and prevent water accumulation in the water guiding section.

[0165] It is understandable that, such as Figure 20 , Figure 21 as well as Figure 24 As shown, multiple parallel water guides are provided on both sides of the drainage section 110, which guide water from different locations into the drainage section 110. By providing multiple water guides, it can also be understood that both sides of the drainage section 110 form a wave-shaped structure, minimizing the area of ​​the top surface of the drainage plate 100 and reducing water accumulation on the top surface of the drainage plate 100, so that the water collected by the drainage plate 100 can be discharged from the outlet 114 as quickly as possible along the water guides and the drainage section 110.

[0166] It is understandable that, such as Figure 22 and Figure 23As shown, at least two drainage sections 110 are provided. Two or more drainage sections 110 have two or more outlets 114, enabling drainage from multiple locations and facilitating the rapid discharge of water from the drainage plate 100. With the area of ​​the drainage plate 100 remaining unchanged, increasing the number of drainage sections 110 can shorten the length of the water guiding section, allowing water to enter the drainage section 110 more quickly.

[0167] Adjacent drainage sections 110 are a first drainage section 111 and a second drainage section 112. Between the first drainage section 111 and the second drainage section 112, there is a first water-guiding area 123 located on one side of the first drainage section 111 and a second water-guiding area 124 located on one side of the second drainage section 112. Facing the first drainage section 111, the depth of the water-guiding portion of the first water-guiding area 123 gradually increases; facing the second drainage section 112, the depth of the water-guiding portion of the second water-guiding area 124 gradually increases. That is, at the junction of the first water-guiding area 123 and the second water-guiding area 124, the depth of the water-guiding portion is the smallest, which helps to guide water collected by the first water-guiding area 123 into the first drainage section 111 and water collected by the second water-guiding area 124 into the second drainage section 112, shortening the length of the water-guiding sections and facilitating water collection in the drainage section 110.

[0168] Of course, such as Figure 15 As shown, another drainage section 110 can also be provided. In this case, the outlet 114 of the drainage section 110 should be avoided as much as possible from the inlet of the fan 270. Multiple parallel water guides are provided on both sides of the drainage section 110, which helps to shorten the water guide path of the water guide and speed up water discharge.

[0169] like Figure 12 , Figure 13 , Figure 15 , Figure 16 as well as Figures 22 to 23 As shown, the drainage section 110 extends from front to back, the outlet 114 is located at the rear end of the drainage plate 100, the water guide extends in the left and right direction, and the left and right sides of the drainage section 110 form a wave-shaped structure. The setting of the wave plate can facilitate the water to be collected and discharged. At this time, the evaporator 230 does not need to be set up tilted downward in the front and back direction.

[0170] The water guide section forms an angle of less than 7° with the top surface of the drainage board 100. That is, the drainage board 100 has an inclined water guide section extending in the left and right directions. The inclination angle of the water guide section does not affect the angle of the drainage board 100 in the front and back directions. The drainage section 110 extends from front to back, and the drainage section 110 forms a seventh angle θ3 with the horizontal plane from front to back. The seventh angle θ3 will affect the height change of the drainage board 100 in the front and back directions. However, overall, the drainage section 110 is located in a local position of the drainage board 100, and the area occupied by the drainage section 110 is small. The inclination angle of the local position of the drainage board 100 is slightly larger, which has little impact on the overall storage space in the room and can also optimize the volume of the room.

[0171] In the above description, the water guiding part can be at least one of the first water guiding part 120 and the third water guiding part 140. That is, the drainage plate 100 can be constructed with the drainage part 110 and at least one of the first water guiding part 120 and the third water guiding part 140. The structure of the drainage plate 100 is diverse.

[0172] Understandably, reference Figure 24 and Figure 25 As shown, the first water guiding section 120 includes a first guiding surface 121 provided along the extending direction of the first water guiding section 120. From the top surface of the drainage plate 100 to the bottom surface, the first guiding surface 121 moves closer to its opposite side. That is, the longitudinal section of the first water guiding section 120 narrows from top to bottom, so that water falling on the first guiding surface 121 and the top surface can be collected at the bottom of the first water guiding section 120 and then collected along the first water guiding section 120 to the drainage section 110.

[0173] At least one of the two side surfaces of the first water guiding section 120 along its extending direction is configured as a first flow guiding surface 121. The longitudinal cross-sectional shape of the first water guiding section 120 may be an inverted triangle or an inverted trapezoid. (See reference) Figure 24 and Figure 25 As shown, both sides of the first water guiding part 120 in the extension direction are first flow guiding surfaces 121, and flow can be guided on both sides of the first water guiding part 120.

[0174] Understandably, reference Figure 24 and Figure 25 As shown, the drainage section 110 includes a second guide surface 113 provided along the extending direction of the drainage section 110. From the top surface of the drainage plate 100 to the bottom surface, the second guide surface 113 moves closer to its opposite side so that the longitudinal section of the drainage section 110 converges from top to bottom. Water falling on the second guide surface 113 and the top surface can be collected at the bottom of the drainage section 110 and then discharged from the outlet 114.

[0175] At least one of the two side surfaces of the drainage section 110 along its extending direction is configured as a second guide surface 113. The longitudinal cross-sectional shape of the drainage section 110 may be an inverted triangle or an inverted trapezoid. (See reference) Figure 25 As shown, both sides of the drainage section 110 in the extension direction are second guide surfaces 113, and both sides of the drainage section 110 can be guided.

[0176] like Figure 24 and Figure 25 As shown, the first water guiding section 120 is provided with a first guiding surface 121, and the drainage section 110 is provided with a second guiding surface 113, so as to fully guide the water so that the water collected by the drainage plate 100 can be discharged from the outlet 114 as soon as possible.

[0177] In the above embodiments, the first guide surface 121 and the second guide surface 113 can be planar or curved, and can be selected as needed.

[0178] It is understandable that the width of the water guide gradually decreases in the direction of the first preset cross section extending towards the drain section 110. It can also be understood that the water guide gradually narrows in the direction of the drain section 110, so that the water in the water guide gathers and helps the water in the water guide enter the drain section 110.

[0179] The first preset cross-section here can be understood as a cross-section parallel to the top surface of the drainage plate 100, representing the horizontal cross-section of the drainage plate 100 in its installed state. The width of the water guiding section can be understood as the distance between the two side walls in the direction of extension of the water guiding section. Taking the first water guiding section 120 as an example, it can be understood as the distance between the two first guiding surfaces 121. Gradual reduction generally means continuous reduction, but step reduction is not excluded.

[0180] Understandably, the width of the second preset section in the extension direction of the drain section 110 increases towards the outlet 114. Defrosting water collected by multiple water guides converges into the drain section 110, with the largest water volume at the outlet 114. The increased width of the drain section 110 provides more drainage space, facilitating stable water discharge.

[0181] The second preset section here can be understood as a section parallel to the top surface of the drainage board 100, a horizontal section of the drainage board 100 in its installed state. The width of the drainage section 110 can be understood as the distance between the two side walls in the extension direction of the drainage section 110, that is, the distance between the two second guide surfaces 113. The increase is generally gradual, but a stepped increase is not excluded.

[0182] The first preset section and the second preset section are parallel or coplanar.

[0183] It is understandable that, such as Figure 22As shown, the edge of the drainage plate 100 is folded upward to form a flange 150. The flange 150 surrounds the drainage plate 100 and has a groove at the position corresponding to the outlet 114. The flange 150 serves to prevent water from overflowing from the upper surface of the drainage plate 100, so that all water on the upper surface of the drainage plate 100 is discharged along the outlet 114, thereby ensuring that all water in the air duct assembly 200 is discharged from the drain.

[0184] The flange 150 extends upward to form a positioning part 151. Two adjacent positioning parts 151 are used to limit the first heater 231 above the drainage plate 100. The heater is fixed in a simple way, and the structure of the drainage plate 100 is simple.

[0185] It should be noted that if the end of the water guide section has an opening, there is no need to install a flange.

[0186] In the above embodiments, the outline shape of the drain plate 100 is related to the shape of the evaporator 230 and the air duct assembly 200, and the shape of the drain plate 100 is not limited. The outline shape of the drain plate 100 can be rectangular, trapezoidal, circular, or other shapes. The upper surface and lower surface of the drain plate 100 have the same shape.

[0187] In the above embodiment, the drainage plate 100 is applied in the air duct assembly 200. That is, the drainage plate 100 is located below the evaporator 230. From front to back, the evaporator 230 does not need to be tilted downwards, which solves the problem that the tilting angle of the evaporator 230 will reduce the volume of the compartment. While ensuring the heat exchange efficiency in the air duct assembly 200, it realizes defrosting and drainage at a small angle and reduces the height difference of the air duct assembly 200, which helps to maximize the volume of the compartment.

[0188] Of course, in actual use, the evaporator 230 can also be tilted slightly downwards, but even if the evaporator 230 is not tilted downwards, it will not affect the drainage effect.

[0189] The drainage board 100 is also connected to a vibrator (not shown in the figure), which provides vibration force according to the defrosting requirements. The opening and closing of the vibrator is closely related to the timing of defrosting. The vibrator can be started simultaneously with the defrosting work, or it can be started with an appropriate delay compared to the defrosting work.

[0190] The vibrator can be any one of an eccentric motor, an ultrasonic vibrator, or an electromagnetic vibrator.

[0191] Based on the drainage board 100 described above, the drainage structure connecting the drainage board 100 and the drainage pipe will be described below.

[0192] like Figures 2 to 13As shown, the air duct assembly 200 also includes a first drainage component 260, which is connected to the opening 170 of the drainage plate 100 in the first cavity 282. The first drainage component 260 and the fan 270 are located on adjacent sides of the drainage plate 100. The first drainage component 260 can be understood as a side drainage structure.

[0193] The first drainage component 260 is provided with a first drainage outlet 262, which is connected to a drainage pipe (the drainage pipe is a first drainage pipe 263) to discharge the water collected by the drainage plate 100.

[0194] The first drainage component 260 is constructed with a drainage channel. The cross-sectional area of ​​the drainage channel gradually decreases from top to bottom, which can ensure that the drainage at the opening 170 position is fully received and can also collect the drainage to the first drainage outlet 262.

[0195] like Figure 6 and Figure 7 As shown, the first drainage component 260 covers all openings 170 of the drainage plate 100 as much as possible to ensure that the connection between the first drainage component 260, the air duct component 220 and the partition component 210 is sealed to avoid air leakage and water leakage. Figure 5 and Figure 7 As shown, some openings 170 do not correspond to the first drainage component 260. This is to illustrate the position of the openings 170. In actual application, the first drainage component 260 covers all openings 170.

[0196] The first drainage component 260 is constructed with a through hole communicating with the opening 170. The area of ​​the through hole covers all openings 170 to ensure drainage and sealing effects and prevent leakage.

[0197] It is understood that the first drainage component 260 is provided with at least one air inlet, that is, the first drainage component 260 is provided with at least one of the first air inlet 201 and the second air inlet 202. For example... Figure 6 and Figure 9 As shown, taking the first drainage component 260 with a first air inlet 201 as an example, the first air inlet 201 passes through the interior of the first drainage component 260 and communicates with the first cavity 282 to realize the return air of the first chamber 410. The first air inlet 201 is connected to the first chamber 410 through the return air component 430 to realize the return air.

[0198] like Figure 13As shown, the first drainage component 260 includes a first wall panel 264 and a second wall panel 265 disposed opposite to each other. The first wall panel 264 has a through hole, and the second wall panel 265 has a first air inlet 201. The first wall panel 264 faces the drainage plate 100, and the second wall panel 265 faces the cabinet 400. The first wall panel 264 and the second wall panel 265 may be detachably connected or integrally formed. In some cases, the first drainage component 260 is constructed as an integrally formed structure to prevent leakage at the connection point.

[0199] It should be noted that when the first drainage component 260 is not provided with the first air inlet 201, the partition component 210 is installed above the air duct component 220, and the partition component 210 is provided with the first air inlet so that the return air component 430 of the first chamber 410 enters the first cavity 282 through the first air inlet 201.

[0200] like Figures 2 to 13 As shown, the opening 170 of the drainage plate 100 faces the first side of the first cavity 282, and the second cavity 281 is located on the second side of the first cavity 282. A fan 270 is installed inside the second cavity 281. The first and second sides of the first cavity 282 are adjacent. The first side of the first cavity 282 can be understood as at least one of the left and right sides, and the second side of the second cavity 281 can be understood as the rear side. The water outlet direction of the drainage plate 100 is different from the air outlet direction of the first cavity 282, which reduces the water vapor carried in the air, reduces the impact of drainage on the fan 270, and reduces the amount of frost on the fan 270. In this case, the opening 170 of the drainage plate 100 faces at least one of the left and right sides.

[0201] like Figures 5 to 8As shown, the drainage plate 100 includes a second water guiding portion 130, which is recessed relative to the top surface of the drainage plate 100. The extending direction of the second water guiding portion 130 forms an angle with the air outlet direction above the drainage plate 100. The depth of the recess in the second water guiding portion 130 gradually increases along the direction of the first side facing the second cavity 281. An opening 170 is formed at the end of the second water guiding portion 130 facing the first side of the second cavity 281. Water collected by the second water guiding portion 130 is discharged from the opening 170 along the extending direction of the water guiding portion. The opening 170 communicates with the aforementioned first drainage component 260, allowing water to be discharged through the first drain outlet 262. The drainage plate 100 has a simple structure and good drainage effect. Furthermore, the return air from the first chamber 410 enters the first cavity 282 through the first air inlet 201. The air enters the first cavity 282 from the left or right side and can flow along the second water guide section 130. The return air from the second chamber 420 enters the first cavity 282 through the second air inlet 202. The air enters the first cavity 282 from the front side of the air duct assembly 200. Thus, the return air from the first chamber 410 and the return air from the second chamber 420 enter the first cavity 282 via different paths, reducing the contact between the two return air paths and also reducing the amount of frost caused by the contact between the two return air paths.

[0202] At this time, the air outlet direction above the drainage plate 100 is from front to back, and the extension direction of the second water guide 130 is from left to right. Therefore, the angle between the extension direction of the second water guide 130 and the air outlet direction above the drainage plate 100 is 90°. The second water guide 130 can slow down the air flow speed in the first cavity 282, prolong the time the air stays in the first cavity 282, and optimize the heat exchange effect.

[0203] It should be noted that the drainage plate 100 includes a second water guiding portion 130 extending to the left from a preset position and a second water guiding portion 130 extending to the right from a preset position. The drainage plate 100 has openings 170 facing the left and right sides. First drainage components 260 are provided on both the left and right sides of the air duct assembly 200, resulting in a simple structure and good water guiding effect. The preset position can be a symmetrical plane of the drainage plate 100, or a longitudinal plane extending in the front-back direction. The preset surface can be the end face of the aforementioned drainage portion. The preset surfaces of the second water guiding portions extending to the left and right sides of the drainage plate can be the same longitudinal surface or different longitudinal surfaces.

[0204] Unlike the embodiments described above, in combination with Figures 10 to 13 As shown, the drainage plate 100 provided inside the air duct assembly 200 has a third water guiding part 140, and the opening 170 of the third water guiding part 140 is connected to the first drainage component 260.

[0205] When the fan 270 is located behind the duct assembly 200, and the first drainage component 260 is located on at least one of the left and right sides of the duct assembly 200, the above drainage method can be understood as side drainage. Since the fan 270 is located behind the duct assembly 200, the evaporator 230 and the fan 270 drain independently. The defrost water of the evaporator 230 is discharged from the left and right sides through the first drainage component 260. The defrost water flowing towards the fan and the water condensed when it encounters the fan 270 can be discharged through the structure below the fan 270. The structure below the fan 270 can be the rear drainage structure described below, or other structures that can discharge water from the second cavity 281.

[0206] Unlike the drainage method of the first drainage component 260 mentioned above, refer to Figures 10 to 16 As shown, the air duct assembly 200 also includes a fan cover 240, which restricts the second cavity 281. A fan 270 is disposed in the second cavity 281 of the fan cover 240. The fan cover 240 is configured with a vent 244, and the second cavity 281 is connected to the first cavity 282 through the vent 244.

[0207] In some cases, both the fan cover 240 and the fan 270 are provided with a second drainage component 290 on the rear side of the duct assembly 200, located on the side where the fan is located, which provides a rear drainage method.

[0208] The fan cover 240 is provided with a second drainage component 290, which is located inside the fan cover 240 or located below the outside of the fan cover 240.

[0209] refer to Figures 14 to 16 As shown, when the second drainage component 290 is installed inside the fan cover 240, the space inside the fan cover 240 is fully utilized, which can reduce the height of the air duct assembly 200 and expand the capacity of the refrigeration equipment.

[0210] A fan cover 240 is provided on the side where the outlet 114 of the drainage board 100 is located. The end of the fan cover 240 facing the drainage board 100 is connected to the outlet 114 of the drainage board 100. The fan cover 240 includes a first cover 241 and a second cover 242 located below the first cover 241. The fan 270 is located above the second cover 242. The second cover 242 is provided with a third drain outlet 2423. Water discharged from the outlet 114 of the drainage board 100 is guided along the second cover 242 to the third drain outlet 2423. The second cover 242 can receive water discharged from the drainage board 100, water dripping from the first cover 241, and water dripping from the fan 270, and discharge defrosting water from the first cavity 282, which helps to simplify the structure of the air duct assembly 200. At this time, the drainage board 100 can adopt a structure with a drainage section 110, as can be seen in the above-described embodiment of the drainage board 100. The outlet 114 of the drainage board 100 faces rearward, and the second cover 242 is located behind the drainage board 100. The second cover 242 can provide a rear drainage structure.

[0211] The second drainage component 290 forms a first water guiding channel 2421 communicating with the outlet 114 of the drainage plate 100. The second drainage component 290 includes a baffle portion 2422 that protrudes upward along the surface of the second cover 242, which restricts the first water guiding channel 2421. The fan 270 is located on one side of the baffle portion 2422. The baffle portion 2422 serves to separate the first water guiding channel 2421 from the fan 270, preventing water from flowing towards the fan 270 and reducing the impact of water on the fan 270.

[0212] The first water guide channel 2421 slopes downwards in the direction away from the outlet 114 of the drainage plate 100, so that the water in the first water guide channel 2421 can be discharged downwards. The structure is simple and the drainage effect is good. The end of the first water guide channel 2421 forms a third drain outlet 2423, which is connected to a drain pipe, and the water is discharged into the compressor chamber through the drain pipe.

[0213] The partition 2422 can be a plate-like structure or a block-like structure that protrudes upward from the second cover 242, and the specific choice can be made according to the needs. Of course, the partition 2422 can also be a part that can be detachably connected to the second cover 242, such as a plate structure that is plugged into or snapped into the second cover 242. The structure of the partition 2422 is not limited to this, and other structures that can realize the partition function can also be used.

[0214] It should be noted that a partition plate 2427 is provided between the drainage plate 100 and the second cover 242. The partition plate 2427 ensures that the drainage plate 100 and the second cover 242 are connected only at the outlet 114, and the other parts are separated by the partition plate 2427. This ensures that the first cavity 282 and the second cavity 281 are connected at the ventilation opening 244 and the outlet 114, while the other parts are separated. The partition plate 2427 can be integrally formed with the second cover 242 or detachably connected.

[0215] The second cover 242 and the drainage plate 100 can be two independent components, or the second cover 242 and the drainage plate 100 can be integrally formed as a whole component.

[0216] The aforementioned fan cover 240 has a first air guide section 2424 and a second air guide section 2425 inside. The first air guide section 2424 and the second air guide section 2425 cooperate with the fan 270 to guide air to the first exhaust port 203 and the second exhaust port 204, ensuring that the air flows out through the corresponding path. Figure 15 As shown, the second cover 242 is provided with a first air guide 2424 and a second air guide 2425.

[0217] The fan 270 is mounted on the upper surface of the second cover 242 via the fan mounting base 271. The upper surface of the second cover 242 is provided with multiple second mounting columns 2426. The fan mounting base 271 is fixed on the second mounting columns 2426. By adjusting the height of the second mounting columns 2426 at different positions, the tilt angle and direction of the fan 270 can be adjusted, and the structure is simple.

[0218] The upper surface of the second cover 242 is inclined downward in the direction away from the drain plate 100, that is, towards the third drain outlet 2423, so that the defrosting water on the surface of the second cover 242 can flow towards the third drain outlet 2423 under the action of gravity.

[0219] The second cover 242 is equipped with a water collection section 2428, which is located on the side of the second cover 242 facing the third drain outlet 2423. The surface area of ​​the water collection section 2428 gradually decreases towards the third drain outlet 2423 and is connected to the third drain outlet 2423. The water collected by the water collection section 2428 can be discharged through the third drain outlet 2423. The gradual decrease in surface area of ​​the water collection section 2428 towards the third drain outlet 2423, that is, the water collection section 2428 converging towards the third drain outlet 2423, facilitates the collection and discharge of defrosting water received by the second cover 242.

[0220] Since the upper surface of the second cover 242 is inclined downward toward the third drain outlet 2423, the water collection part 2428 can also be inclined downward, which will improve the drainage effect. However, the water collection part 2428 is not limited to being inclined downward, and the possibility of the water collection part being set horizontally cannot be ruled out.

[0221] The second cover 242 is provided with a heating component 226, which heats the second cover 242 to defrost the fan cover 240 and the fan 270 and other components inside it. The heating component 226 can be a heating film formed on the second cover 242, or it can be a heating plate located below the second cover 242. The structure of the heating component 226 is not limited to these; other structures capable of achieving defrosting by heating are also possible.

[0222] Unlike the second drainage component 290 mentioned above, the reference Figure 10 and Figure 11 As shown, the second drainage component 290 can also be located below the fan cover 240. The second drainage component 290 is sealed to the outer surface of the fan cover 240 to form a second water guiding channel communicating with the outlet 114 of the drainage plate 100. The second water guiding channel is separated from the second cavity 281, that is, the second water guiding channel is separated from the fan 270 by the fan cover 240, reducing the impact of water in the second water guiding channel on the fan 270 and other components.

[0223] The second drainage component 290 can be configured as a U-shaped structure with a flange, or it can be integrally formed under the second cover 242. The structure of the second drainage component 290 is diverse and can be selected according to needs. When the drainage plate 100 has multiple outlets 114, multiple second drainage components 290 can be installed below the fan cover 240, and the second water guide channel and the fan 270 do not interfere with each other. Below the duct assembly 200, the corresponding local position of the second drainage component 290 protrudes downwards, making the local height of the duct assembly 200 larger without affecting the height of other positions, thus also expanding the capacity of the refrigeration equipment.

[0224] The second water guide channel slopes downwards towards the outlet 114 away from the drainage plate 100, so that the water in the second water guide channel can be discharged downwards. The structure is simple and the drainage effect is good. The second drainage component 290 is provided with a second drainage outlet, which is connected to the second drainage pipe 291. Water is discharged into the compressor chamber through the second drainage pipe 291.

[0225] Of course, the water guiding channel (first water guiding channel 2421 or second water guiding channel) can also be set horizontally, which will not increase the height dimension of the air duct assembly 200 due to the water guiding channel, and helps to reduce the height of the air duct assembly 200, thereby increasing the storage space of the refrigeration equipment.

[0226] The aforementioned fan cover 240 has a wiring hole (not shown in the figure) so that the electrical connection parts of the air duct assembly 200 can be wired through the wiring hole to achieve electrical connection. The structure is simple and convenient for wiring.

[0227] When the installation method of the fan 270 is different from the above method, that is, when the fan cover 240 is not set, the drainage method is different from the first drainage component 260 and the second drainage component 290. The duct component 220 supports the drainage plate 100, which is located below the evaporator 230. A water guide 223 is provided on the side where the outlet 114 of the drainage plate 100 is located. One side of the water guide 223 faces the outlet 114 and is connected to the outlet 114. The other side of the water guide 223 forms a drain outlet so that the water guide 223 is connected to the third drain pipe 2231. The water discharged from the outlet 114 of the drainage plate 100 is guided along the water guide 223 to the third drain pipe 2231.

[0228] A fan 270 is located on one side of the evaporator 230. A fan cover 243 is located between the fan 270 and the evaporator 230. The inlet of the fan 270 communicates with the first cavity 282 through the ventilation opening 244 of the fan cover 243. The fan cover 243 is located outside the water guide 223 and is fixed to the tank body, forming a cavity for installing the fan 270 between the fan cover 243 and the tank body. This cavity communicates with the first cavity 282 through the ventilation opening 244 of the fan cover 243. Alternatively, the fan cover 243 itself forms a cavity for installing the fan 270, which communicates with the first cavity 282. The fan cover 243 is fixedly installed on the tank body. A third cavity is defined between the fan cover 243 and the water guide 223. Air from the first cavity 282 is then discharged by the fan 270 through the third cavity.

[0229] The water guide component 223 can be understood as part of the air duct component 220, or as a component independent of the air duct component 220, depending on the specific requirements. The fan cover 243 is a mounting component for the fan 270. The main function of the fan cover 243 is similar to that of the fan shroud 240. A fan cover 243 or a fan shroud 240 is provided within an air duct assembly 200. The fan cover 243 is used in combination with the water guide component 223, and the fan shroud 240 is used in combination with the second drainage component 290. When the air duct assembly 200 includes the fan shroud 240, a vent 244 is provided on the fan shroud 240 so that the air in the first cavity 282 is discharged by the fan 270 through the vent 244.

[0230] The fan cover 243 is provided with a third air guide section 2431 and a fourth air guide section 2432 so that the fan 270 can send air out of the first air outlet 203 and the second air outlet 204.

[0231] The following section describes the fan 270 and its installation method.

[0232] like Figures 5 to 16As shown, the duct assembly 200 also includes a fan shroud 240, which includes a first shroud 241 and a second shroud 242. The first shroud 241 has a guide surface 2411 facing the fan 270. The first side of the guide surface 2411 is higher than the second side, and the first and second sides of the guide surface 2411 are opposite sides. The fan shroud 240 restricts a second cavity 281, in which the fan 270 is disposed. The first shroud 241 can collect water vapor above the fan 270 and guide the collected water droplets from the first side of the guide surface 2411 to the second side. The first shroud 241 promotes the collection and discharge of water vapor in the second cavity 281, reduces the corrosion of the fan 270 by water vapor, and extends the life of the fan 270.

[0233] The air duct assembly 200 also includes a fan 270. The rotation axis of the fan 270 forms a first angle α1 with the vertical direction. The fan cover 240 has a ventilation opening 244, and the inlet of the fan 270 faces the ventilation opening 244. The second cavity 281 is connected to the air outlet area of ​​the first cavity 282 through the ventilation opening 244, and the second cavity 281 is connected to the exhaust port of the air duct assembly 200. The air in the first cavity 282 is drawn into the second cavity 281 by the fan 270 through the ventilation opening 244 on the fan cover 240. Under the action of the fan 270, the air in the second cavity 281 is introduced into the first chamber 410 or the second chamber 420 through the exhaust port. That is, the second cavity 281 and the aforementioned first exhaust port 203 and second exhaust port 204 can be adjusted for opening and closing.

[0234] The rotation axis of the fan 270 forms a first angle α1 with the vertical direction. This can be understood as the front end of the rotation axis of the fan 270 being lower or higher than the rear end. To meet ventilation and drainage requirements, the angle α1 should be as small as possible, and the height difference between the front and rear ends of the rotation axis of the fan 270 should be as large as possible. In other words, the fan 270 should be set as close to horizontal as possible to reduce the space occupied by the fan 270 in the vertical direction, thereby reducing the size of the duct assembly 200 in the vertical direction.

[0235] At this time, the vent 244 and the drain outlet of the first cavity 282 are misaligned, which can minimize the air being drawn out by the fan 270 at the drain outlet, prolong the heat exchange time of the air in the first cavity 282, and improve the heat exchange efficiency.

[0236] The fan cover 240 is fixed to the main body of the box, and the air in the first cavity 282 is discharged by the fan 270 through the second cavity 281.

[0237] The first included angle α1 is greater than or equal to 7°, allowing water collected on the first side of the guide surface 2411 to flow along its surface slope to the second side, and then guided along the air duct component 220 below the fan 270 to the third drain outlet 2423. This prevents water collected on the surface of the first cover 241 from dripping into the fan 270, minimizing water droplets. The first side of the guide surface 2411 is higher than the second side, and the surface of the first cover 241 facing the fan 270 can be an inclined plane or a curved surface. A plane guide surface 2411 simplifies the structure of the first cover 241 and facilitates manufacturing. Additionally, water collected on the surface of the fan 270 falls and is discharged under gravity.

[0238] The first included angle α1 needs to be less than 70° in order to reduce the height; the first included angle α1 can be less than 60°, 50°, 45°, 30°, 20° or 10°. The smaller the first included angle α1, the smaller the height dimension of the air duct assembly 200.

[0239] It should be noted that when the first included angle α1 is less than 7°, the exhaust requirements can be met, and the height dimension of the duct assembly 200 is smaller. However, the water guiding effect of the surface of the first cover 241 facing the fan 270 is poor, and the drainage effect is difficult to meet the requirements. If the first included angle α1 is less than 7°, the drainage problem of the fan cover 240 needs to be solved.

[0240] In some cases, the first cavity 282 and the second cavity 281 are two cavities arranged side by side; or, the second cavity 281 is surrounded by the first cavity 282. The positional relationship between the first cavity 282 and the second cavity 281 is not limited to these, as long as the two cavities are connected. Taking the second cavity 281 located behind the first cavity 282 as an example, the fan 270 can be tilted forward at a first included angle α1 or tilted backward at a first included angle α1, as shown in the reference. Figure 14 As shown, the fan 270 is tilted forward at a first included angle α1, for reference. Figure 8 As shown, the fan 270 is tilted backward at a first included angle α1. That is, the upper end of the rotation axis of the fan 270 is tilted forward relative to the vertical direction to form a first included angle α1, or tilted backward to form a first included angle α1.

[0241] In this design, the fan 270 is tilted upwards gradually from front to back, meaning its inlet faces the air outlet of the first cavity 282. This facilitates airflow from the first cavity 282 into the fan 270 inlet, improving ventilation. The fan 270 is tilted downwards gradually from front to back, improving space utilization. For the aforementioned structures, the evaporator 230 and fan 270 can share a drainage structure to simplify the structure; alternatively, the evaporator 230 and fan 270 can use independent drainage structures to reduce the impact of drainage on the fan 270. For example... Figure 5 , Figure 6 , Figure 12 and Figure 13 As shown, the drainage from the evaporator 230 is discharged from the first drainage component 260 on the left and right sides, and the drainage from the fan 270 is discharged from the rear end.

[0242] Understandably, the rotation axis of the fan 270 is collinear with the central axis of the vent 244. During the process of drawing air from the first chamber 282 into the second chamber 281 through the vent 244, the fan 270 has a good suction effect, which contributes to the effective air circulation within the duct assembly 200. In some cases, the shape of the vent 244 is adapted to the shape of the fan 270's inlet so that air from the first chamber 282 is drawn into the second chamber 281 by the fan 270 through the vent 244.

[0243] The rotation axis of the fan 270 is collinear with the central axis of the vent 244. Generally, the guide surface 2411 of the first shroud 241 is set parallel to the fan 270, or the area of ​​the first shroud 241 corresponding to the fan 270 is set parallel to the fan 270. The fan 270 is generally a centrifugal fan, which can change the direction of airflow, facilitating the delivery of air to the first chamber 410 or the second chamber 420. Of course, other fans 270 that can achieve the desired circulating airflow effect can also be used.

[0244] It is understandable that, such as Figures 4 to 6 As shown, the first cover 241 is located above the fan 270. The first side of the guide surface 2411 faces away from the drain plate 100, and the second side of the guide surface 2411 faces the drain plate 100. The first side of the guide surface 2411 is inclined upward at a second included angle α2 relative to the second side of the guide surface 2411, that is, in a direction away from the drain plate 100. The upward inclination of the guide surface 2411 of the first cover 241 at the second included angle α2 means that the vent 244 faces the air outlet direction of the first cavity 282, which helps the air in the first cavity 282 to enter the second cavity 281, thereby improving the ventilation effect. Furthermore, the evaporator 230 and the fan 270 can share a drainage structure to simplify the structure. Figures 14 to 16 as well as Figure 21 As shown, the air duct assembly 200 drains water from the second or third drain outlet 2423 at the rear end.

[0245] Combination Figures 12 to 25As shown, when the drainage plate 100 includes a water guiding section and a drainage section 110, and the drainage section 110 has an outlet 114, the water collected by the drainage plate 100 flows along the water guiding section to the drainage section 110 and is discharged from the outlet 114. Due to this structure, some air also flows along the water guiding section and the drainage section 110 to the outlet 114. By setting the outlet 114 and the vent 244 to be offset, the air flowing towards the outlet 114 can be prevented from being directly discharged from the vent 244, thus extending the heat exchange time of the air in the first cavity 282 as much as possible and improving the heat exchange efficiency. Specifically, when the second cavity 281 is located behind the first cavity 282, the direction away from the drainage plate 100 is the front-to-back direction. Of course, the first cavity 282 and the second cavity 281 can also be arranged left and right, with the direction away from the drainage plate 100 being the left-to-right direction. The working principle is the same as the front-to-back direction, and will not be elaborated here. Figures 1 to 3 , Figure 10 , Figure 11 as well as Figures 17 to 19 As shown, the example is that the second cavity 281 is located behind the first cavity 282.

[0246] refer to Figures 1 to 3 , Figure 10 , Figure 11 as well as Figures 17 to 19 As shown, the first cover 241 is located above the fan 270. The first side of the guide surface 2411 faces the drain plate 100, and the second side of the guide surface 2411 faces away from the drain plate 100. The second side of the guide surface 2411 is inclined downward at a third included angle α3 relative to the first side of the guide surface 2411, that is, in a direction away from the drain plate 100. The guide surface 2411 of the first cover 241 is inclined downward at a third included angle α3. The first cover 241 guides water flow to the rear of the fan 270, which helps the collected water to be discharged quickly.

[0247] In some cases, the second included angle α2 and the third included angle α3 are set to be the same as the first included angle α1, so that the rotation axis of the fan 270 is collinear with the central axis of the vent 244, ensuring the airflow effect in the duct assembly 200 and the air circulation effect in the refrigeration equipment.

[0248] The components such as the drainage board 100, fan cover 240, and water guide 223 in the above embodiments all need to be supported and insulated by the air duct component 220. The structure of the air duct component 200 is described below.

[0249] The air duct component 220 can be fixed to the box body by being fixedly connected to the partition component 210, or the air duct component 220 can be directly fixedly connected to the box body.

[0250] The air duct component 220 includes a support plate and a second insulation layer 221 located below the drainage plate 100. The support plate is supported below the second insulation layer 221. The shape of the upper surface of the second insulation layer 221 is adapted to the shape of the lower surface of the drainage plate 100, so that the second insulation layer 221 can fully insulate the drainage plate 100, reduce the outward diffusion of cold energy, and ensure heat exchange efficiency.

[0251] When the lower surface of the drainage board 100 is curved, such as wavy, the upper surface of the second insulation layer 221 is the corresponding curved surface; when the lower surface of the drainage board 100 is flat, the upper surface of the second insulation layer 221 is flat, and the specific settings can be configured as needed.

[0252] The support plate includes a first support portion 222 and a second support portion 225 that is inclined downward along the first support portion 222. The second support portion 225 and the outlet 114 of the drainage plate 100 are located on the same side of the air duct assembly 200. The first support portion 222 supports the second insulation layer 221. A third insulation layer 224 is provided above the second support portion 225. A water guide 223 or a fan cover 240 is provided above the third insulation layer 224. The second support portion 225 serves to support the third insulation layer 224 and the components above the third insulation layer 224 (such as the water guide 223 or the fan cover 240).

[0253] The first support portion 222 and the second support portion 225 are independent parts, such as plates, and are installed by detachable connections, such as plug-in, snap-fit, and fasteners; or, the first support portion 222 and the second support portion 225 are integrally formed, which can reduce the number of parts and simplify assembly. In some cases, the water guide 223 and the drainage plate 100 are two independent parts; of course, the water guide 223 and the drainage plate 100 can also be formed into an integral structure.

[0254] The air duct component 220 may have an air inlet so that return air from at least one of the first chamber 410 and the second chamber 420 enters the first cavity 282 through the air inlet of the air duct component 220. For example, an air inlet may be provided on the support plate; Figure 13 As shown, the front end of the first support 222 is provided with a second air inlet 202 that communicates with the second chamber 420, so that the second chamber 420 returns air to the first cavity 282 through the second air inlet 202 at the front end of the air duct assembly 200.

[0255] refer to Figures 36 to 38 As shown, a first air inlet 201 is provided on the first side of the first cavity 282, and a second air inlet 202 is provided on the second side of the first cavity 282. This can also be understood as the cross-sections of the first air inlet 201 and the second air inlet 202 forming an angle perpendicular to their respective air intake directions. The air entering through the first air inlet 201 and the air entering through the second air inlet 202 has different temperatures.

[0256] The air duct component 220 is provided with a partition 2221. The orthographic projection of the partition 2221 at the first air inlet 201 covers a portion of the area of ​​the first air inlet 201. The orthographic projection of the partition 2221 at the first air inlet 201 is located at the end of the first air inlet 201 near the second side. The partition 2221 and the first air inlet 201 are separated by a preset distance a. The air entering the first air inlet 201 flows in the direction of the partition 2221. During the air flow, part of the air is guided along the extension direction of the partition 2221, and part continues to flow along the air intake direction. When the first air inlet 201 and the second air inlet 202 enter air at the same time, the amount of air that crosses contact between the air entering the first air inlet 201 and the air entering the second air inlet 202 can be reduced.

[0257] Inside the first cavity 282, there is a gap between the end of the evaporator 230 facing the second side and the second air inlet 202. Most of the air entering through the first air inlet 201 and the second air inlet 202 converges and exchanges heat at this gap before flowing along the evaporator 230 to the exhaust port. At this gap, the partition 2221 guides part of the air entering through the first air inlet 201 towards the extension direction of the partition 2221, which reduces the amount of air exchanged for heat between the air entering through the first air inlet 201 and the air entering through the second air inlet 202. This reduces the amount of frost on the end of the evaporator 230 near the second side due to the different air temperatures, preventing the large amount of frost on the second side from affecting the air intake of the first cavity 282. It also solves the problem of short defrosting cycles caused by large amounts of frost on the second side, appropriately extending the defrosting cycle and saving electricity. The partition 2221 is designed so that the air intake of the first air inlet 201 and the air intake of the second air inlet 202 are kept on both sides of the partition 2221 as much as possible.

[0258] refer to Figure 36 As shown, taking the alignment of the first air inlet 201 with the edge of the air duct component 220 as an example, the preset distance 'a' is the distance from the first side edge of the air duct component 220 to the partition 2221. It should be noted that the preset distance 'a' is set to ensure adequate flow space between the first air inlet 201 and the partition 2221, allowing airflow into the first cavity 282 and preventing the partition 2221 from blocking the corresponding portion of the first air inlet 201. Therefore, the value of the preset distance 'a' is not limited and can be selected as needed. Orthographic projection can be understood as the projection at the first air inlet 201 along the airflow direction.

[0259] It should be noted that the air duct component 220 may be formed with a first air inlet 201 (not shown in the figure).

[0260] An evaporator 230 is provided inside the first cavity 282. The heat sink 234 of the evaporator 230 extends from the second air inlet 202 toward the exhaust outlet (from front to back in the attached figure) so that the air at the gap between the evaporator 230 and the second air inlet 202 can flow toward the exhaust outlet along the guiding direction of the heat sink 234.

[0261] The partition 2221 extends along the second air inlet 202 toward the exhaust outlet. Part of the air entering the first air inlet 201 flows into the evaporator 230 along the partition 2221. The extension direction of the partition 2221 is consistent with that of the heat sink 234. Thus, the partition 2221 and the heat sink 234 cooperate to guide the airflow toward the exhaust outlet.

[0262] In the direction from the first air inlet 201 to the partition 2221, the air duct component 220 is provided with a guide surface 2222. The guide surface 2222 is curved. The partition 2221 is located at and tangent to the first end of the guide surface 2222. The second end of the guide surface 2222 extends toward the first wall surface that restricts the first air inlet 201. A portion of the air entering the first cavity 282 from the first air inlet 201 can flow along the guide path of the guide surface 2222, that is, this portion of the air flows with the curved surface of the guide surface 2222. The guide surface 2222 changes the flow direction of part of the air, and part of the air flows along the extension direction of the partition 2221, reducing the airflow along the air intake direction of the first air inlet 201, thereby reducing the amount of air exchanged for heat in the two portions of air intake at the first air inlet 201 and the second air inlet 202.

[0263] In some cases, the second end of the guide surface 2222 is perpendicular to the first wall surface that restricts the first air inlet 201, so that the air entering the first air inlet 201 flows along the guide surface 2222 toward the partition 2221. Of course, the second end of the guide surface 2222 can also form an obtuse or acute angle with the first wall surface, so that the air entering the first airlet flows along the guide surface 2222. The specific structure of the guide surface 2222 can be selected as needed.

[0264] refer to Figure 37 and Figure 38 As shown, the guide surface 2222 includes a flat portion 22222 and a curved portion 22221. One end of the curved portion 22221 is connected to the partition portion 2221, and the other end of the curved portion 22221 is connected to and tangent to the flat portion 22222. The flat portion 22222 extends toward the first wall surface. The curved portion 22221 changes the direction of airflow. The flat portion 22222 can guide the airflow toward the curved portion 22221. The flat portion 22222 and the curved portion 22221 cooperate to make the air intake of the first air inlet 201 smoother.

[0265] In some cases, the planar portion 22222 extends to connect with the first wall surface. However, the planar portion 22222 may also have a gap between it and the first wall surface, and the specific positional relationship between the planar portion 22222 and the first wall surface is not limited.

[0266] The air duct component 220 is provided with a second air inlet, which forms a second air inlet 202. Both ends of the second air inlet are provided with partitions 2221. The first side includes two side surfaces adjacent to the second side, that is, a first air inlet 201 is provided on both sides adjacent to the second air inlet 202. Through the partitions 2221 at both ends of the second air inlet, the air intake of the corresponding first air inlet 201 can be separated. The structure is simple and has good symmetry.

[0267] The air duct component 220 is provided with a guide plate 2223. The guide plate 2223 connects the edge of the air duct component 220 and the partition 2221. The guide plate 2223 is located below the partition 2221 and the guide surface 2222. The guide plate 2223 can support the partition 2221 so that the partition 2221 is kept at a preset height position, ensuring the correspondence between the air intake of the first air inlet 201 and the partition 2221. At the same time, the air intake of the first air inlet 201 can also flow along the guide plate 2223 towards the exhaust port.

[0268] The height of the partition 2221 is less than or equal to 1 / 3 of the height of the first air inlet 201, so that the partition 2221 divides the air intake in the height direction, which has little impact on the air intake effect of the first air inlet 201 and can ensure the air intake efficiency of the first air inlet 201.

[0269] The length of the partition 2221 is less than or equal to one-third of the length of the first air inlet 201, so that the partition 2221 divides the air intake in the length direction, which has little impact on the air intake effect of the first air inlet 201 and can ensure the air intake efficiency of the first air inlet 201. Here, the length of the partition 2221 is the length extending along the air duct component 220 towards the evaporator 230.

[0270] The duct component 220 is integrally formed with a partition 2221. The partition 2221 does not require independent processing and installation, which simplifies the assembly process of the duct assembly 200 and saves assembly time. Alternatively, the duct component 220 can be detachably connected to the partition 2221. The structure and shape of the partition 2221 can be selected or replaced according to actual needs, making the structure of the duct assembly 200 more flexible and diverse.

[0271] The air duct component 220 includes a support plate and an insulation layer. The support plate supports the insulation layer and its components, and has a second air inlet 202. In some cases, the partition 2221 is integrally formed with or detachably connected to the support plate. In this case, the guide surface 2222 mentioned above is also part of the surface of the support plate. Of course, it is not excluded that the partition 2221 is integrally formed with or detachably connected to the insulation layer.

[0272] The embodiments of the partition 2221 described above, as well as the embodiments of the guide surface 2222 and the baffle 2223 associated with the partition 2221, may also be provided on the partition member 210, and at least one of the partition member 210 and the air duct member 220 has the functions described above.

[0273] Based on the above description of the drainage board 100, the duct component 220 can support the drainage board 100 of one embodiment described above. The duct component 220 includes a support plate and an insulation layer located above the support plate; the support plate includes the first support portion 222 and the second support portion 225 described above, the insulation layer includes the second insulation layer 221 and the third insulation layer 224 described above, the second insulation layer 221 is disposed above the first support portion 222, and the drainage board 100 is disposed above the second insulation layer 221.

[0274] refer to Figures 20 to 25 As shown, the structure of the drainage plate 100 includes a drainage section 110 and a water guiding section. The drainage section 110 has an outlet 114 and is recessed relative to the top surface of the drainage plate 100. The water guiding section is connected to the drainage section 110 and is also recessed relative to the top surface of the drainage plate 100. The extending direction of the water guiding section forms a fifth angle with the air outlet direction above the drainage plate 100, and the bottom of the water guiding section is inclined along a first direction, which forms a sixth angle θ2 with the top surface of the drainage plate 100. The water guiding section here can be understood as the first water guiding section 120 in the above embodiment.

[0275] The upper surface of the second insulation layer 221 is adapted to the lower surface of the drainage board 100. When the drainage board 100 is a corrugated board, the upper surface of the second insulation layer 221 is a corrugated surface that is adapted to it. The shape of the lower surface of the second insulation layer 221 can be set as needed. For example, if the lower surface is a horizontally extending plane, the lower surface of the air duct component 220 can also be configured as a horizontally extending plane. The lower surface of the air duct component 200 has a regular shape and a simple appearance structure.

[0276] refer to Figure 37As shown, the lower surface of the second insulation layer 221 is constructed with a first support slope inclined along the first direction, and the first support part 222 is constructed with a second support slope 2224 adapted to the first support slope. The first support slope and the second support slope 2224 are easy to process and can reduce the thickness of the air duct assembly 200.

[0277] The second insulation layer 221 is also constructed with a first support groove adapted to the drainage part 110. The first support part 222 is constructed with a second support groove 2225 adapted to the first support groove. The rear opening 170 of the second support groove 2225 is connected to the drainage structure to facilitate the discharge of defrosting water received by the drainage plate 100.

[0278] The evaporator 230 above the drain plate 100 will be described below.

[0279] refer to Figures 18 to 20 As shown, the evaporator 230 is horizontally positioned within the first cavity 282 of the air duct assembly 200, and the drain plate 100 is disposed below the evaporator 230. The top surface of the drain plate 100 is parallel to the bottom surface of the evaporator 230. Figure 1 , Figure 2 , Figure 10 and Figure 11 The evaporator 230 is placed above the drain plate 100, but the structure of the evaporator 230 is not shown in the figure.

[0280] The evaporator 230 is horizontally positioned, which can be understood as the height of the evaporator 230 being less than its length and width.

[0281] The drain plate 100 is located below the evaporator 230. The drain plate 100 is provided with a water guiding part that is recessed relative to the top surface. The angle between the evaporator 230 and the horizontal direction is less than or equal to a preset angle.

[0282] Specifically, the angle between the evaporator 230 and the horizontal direction is less than or equal to a preset angle. This can be understood as the end of the evaporator 230 facing the exhaust port being lower than the end facing the air inlet. The line connecting the end of the evaporator 230 facing the exhaust port and the end facing the air inlet forms a preset angle with the horizontal plane. This connecting line can be located on the bottom surface of the evaporator 230 or on its symmetrical plane in the height direction. When the evaporator 230 is rectangular, both the bottom surface and the symmetrical plane of the evaporator 230 form a preset angle with the horizontal direction.

[0283] In some cases, the preset angle can be less than or equal to 7°, and the preset angle can be at least one of 1°, 2°, 3°, 4°, 5°, 6° and 7°. It should be noted that the preset angle is limited to less than or equal to 7° here in order to reduce the height of the air duct assembly 200. When the height of the air duct assembly 200 is not strictly limited, the preset angle can be appropriately increased.

[0284] Alternatively, the drainage plate 100 is provided with a water guide portion that is recessed relative to the top surface, which can also enable the evaporator 230 to be horizontally positioned in the first cavity 282, thereby significantly reducing the height of the air duct assembly 200.

[0285] The angle formed between the evaporator 230 and the horizontal direction is less than or equal to a preset angle, so as to reduce the vertical space occupied by the evaporator 230, thereby reducing the overall height of the air duct assembly 200 and achieving the purpose of expanding the capacity of the refrigeration equipment.

[0286] Among them, combined Figures 3 to 14 The structure of the drainage plate 100 shown can be preset at an angle of 7°, which can meet the defrosting and drainage requirements of the evaporator 230, while reducing the overall height of the air duct assembly 200.

[0287] It is understandable that the evaporator 230 can be horizontally installed above the drain plate 100. This can be understood as the bottom surface of the evaporator 230 being parallel to the horizontal plane. Compared to the case where the evaporator 230 is installed at an angle, the height of the installation space required for the horizontally installed evaporator 230 is reduced. Consequently, the height dimension of the air duct assembly 200 can be reduced, and the space occupied by the air duct assembly 200 within the cabinet body is reduced. Without changing the external dimensions of the cabinet body, the capacity of the cabinet body can be effectively increased, so as to provide a large-capacity refrigeration device.

[0288] At this time, the installation state of the drain plate 100 is not limited. The top surface of the drain plate 100 is parallel to the bottom surface of the evaporator 230, or the top surface of the drain plate 100 is inclined downward from front to back relative to the bottom surface of the evaporator 230.

[0289] It is understandable that the top surface of the drain plate 100 is flat and parallel to the horizontal plane, meaning that the bottom surface of the evaporator 230 and the top surface of the drain plate 100 are both placed horizontally. The bottom surface of the evaporator 230 is parallel to or in contact with the top surface of the drain plate 100, reducing the gap between the evaporator 230 and the drain plate 100. This prevents air from flowing directly from the gap between the evaporator 230 and the drain plate 100 to the vent 244 within the first cavity 282, thus facilitating sufficient heat exchange within the first cavity 282.

[0290] It should be noted that minimizing the gap between the evaporator 230 and the drain plate 100 slows down the speed at which the air flows from the gap between the evaporator 230 and the drain plate 100 to the vent 244, and prolongs the time the air stays in the first cavity 282, so that the air can fully exchange heat with the evaporator 230 in the first cavity 282 before flowing out, thus ensuring heat exchange efficiency.

[0291] In the above real-time example, the evaporator 230 is part of the refrigeration system in the refrigeration equipment. The refrigeration system includes a compressor, a condenser, a throttling element and the evaporator 230. The refrigerant in the refrigeration system evaporates and absorbs heat in the evaporator 230 to provide a cooling environment for the air in the first cavity 282.

[0292] The structure of evaporator 230 will be described below. It should be noted that the description is based on the example of evaporator 230 being installed in the air duct assembly, but evaporator 230 is not limited to use in air duct assembly 200, and can also be installed in other suitable environments.

[0293] The evaporator 230 includes a heat exchange tube 233 and a heat sink 234 connected to the heat exchange tube 233. The heat sink 234 is configured with a ventilation section 23421 through which the air inlet 201 can pass, so that the air inlet 201 flows through the ventilation section 23421 into the interior of the evaporator 230, so that the air inlet 201 can be fully heat exchanged.

[0294] It should be noted that some heat sinks 234 may have ventilation sections 23421, or all heat sinks 234 may have ventilation sections 23421, depending on the specific needs.

[0295] The following explanation will be based on the example of a portion of the heat sink 234 having a ventilation section 23421.

[0296] The evaporator 230 includes a heat exchange tube 233, a first heat sink 2341, and a second heat sink 2342. Both the first heat sink 2341 and the second heat sink 2342 are connected to the heat exchange tube 233. Multiple first heat sinks 2341 are arranged side by side to form a first heat dissipation section. At least one side of the first heat dissipation section is provided with a second heat sink 2342 (when the evaporator is installed in the air duct assembly, the second heat sink 2342 is located between the first heat sink 2341 and the first air inlet 201). The second heat sink 2342 is constructed with a ventilation section 23421 through which the air inlet of the first air inlet 201 can pass, so that part of the air inlet of the first air inlet 201 flows into the evaporator 230 through the ventilation section 23421, thereby reducing the amount of air exchanged due to cross contact between the air inlet of the first air inlet 201 and the air inlet of the second air inlet 202, and reducing the frost that condenses due to heat exchange between the air inlet of the first air inlet 201 and the air inlet of the second air inlet 202.

[0297] The air intake of the first air inlet 201 is diverted by the second heat sink 2342 of the evaporator 230, which has little impact on the overall structure of the air duct assembly 200. Only some heat sinks 234 need to be replaced with the second heat sink 2342 with ventilation section 23421. The structure is simple and the air diversion effect is good.

[0298] In this configuration, the second heat sink 2342 is located on at least one side of the first heat sink 2341, that is, on one side of the air duct assembly 200 where the first air inlet 201 is provided. Therefore, the second heat sink 2342 is located on the corresponding side. Since the air duct assembly 200 has first air inlets 201 on both opposite sides, the second heat sink 2342 is located on both sides of the first heat sink 2341. The surface of the second heat sink 2342 faces the first air inlet 201. The second air inlet 202 is located at one end of the second heat sink 2342, and the exhaust port is located at the other end of the second heat sink 2342.

[0299] The number of second heat sinks 2342 can be set as needed, and one or more second heat sinks 2342 can be set. When one second heat sink 2342 is set, part of the air intake of the first air inlet 201 flows through the ventilation section 23421 to the space between the second heat sink 2342 and the first heat sink 2341, and flows towards the exhaust port along the space between the second heat sink 2342 and the first heat sink 2341. When multiple second heat sinks 2342 are set, the air passes through the ventilation section 23421 of the second heat sink 2342 and flows along the space between adjacent second heat sinks 2342 and the space between the second heat sink 2342 and the first heat sink 2341, so as to flow towards the exhaust port. The airflow space is larger and the airflow is better.

[0300] The ventilation section 23421 of the adjacent second heat sink 2342 is straight through. That is, in two adjacent second heat sinks 2342, the orthographic projection of the ventilation section 23421 of one second heat sink 2342 covers the orthographic projection of the ventilation section 23421 of the other second heat sink 2342, so that some air can pass smoothly through the ventilation section 23421 and flow towards the first heat sink 2341.

[0301] The ventilation portions 23421 of adjacent second heat sinks 2342 are staggered and connected. That is, in two adjacent second heat sinks 2342, the orthographic projection of the ventilation portion 23421 of one second heat sink 2342 covers a portion of the orthographic projection of the ventilation portion 23421 of the other second heat sink 2342, or the orthographic projections of the ventilation portions 23421 of two adjacent second heat sinks 2342 do not intersect, so that some air can flow along the extension direction of the second heat sink 2342.

[0302] Among them, the two adjacent second heat sinks 2342 can have a straight through ventilation section 23421 and a staggered through ventilation section 23421, resulting in more diverse structures.

[0303] When multiple second heat sinks 2342 are provided, the cross-sectional area of ​​the ventilation section 23421 can be gradually reduced from the outside of the evaporator 230 toward the first heat sink 2341. The air intake through the ventilation section 23421 toward the first heat sink 2341 is reduced. The reduction in the cross-sectional area of ​​the ventilation section 23421 has little impact on the airflow and can still ensure the heat dissipation area of ​​the second heat sink 2342.

[0304] The ventilation section 23421 includes at least one of a closed-loop through hole and a through hole with an opening. The ventilation section 23421 has various structures and is easy to process.

[0305] The ventilation section 23421 has a shape that is at least one of rectangle, circle, ellipse, trapezoid and triangle. The ventilation section 23421 has a variety of shapes and a simple structure.

[0306] The ventilation section 23421 is in the shape of at least one of a closed rectangle, circle, ellipse, trapezoid and triangle, or the ventilation section 23421 is in the shape of at least one of a rectangle, circle, ellipse, trapezoid and triangle with an opening, such as a rectangle with an opening of 170 at one end, a circle with a notch, an ellipse with a notch, etc.

[0307] Of course, the shape of the ventilation section 23421 is not limited to the aforementioned shape, and the specific shape of the ventilation section 23421 can be set as needed.

[0308] The evaporator 230 has a first air inlet 201 on both sides, and multiple first heat sinks 2341 are arranged side by side to form a first heat dissipation section. Second heat sinks 2342 are symmetrically arranged on both sides of the first heat dissipation section. The evaporator 230 has a ventilation section 23421 at the position corresponding to the two first air inlets 201, so that part of the air intake of the two first air inlets 201 can be diverted through the ventilation section 23421.

[0309] refer to Figure 13 As shown, return air components 430 are provided on both the left and right sides of the air duct assembly 200. The return air components 430 are connected to the first air inlet 201 to realize air intake from both sides of the air duct assembly 200.

[0310] The first heat sink 2341 and the second heat sink 2342 are located above the drain plate 100 to receive the defrosting water of the evaporator 230 through the drain plate 100. The structure is simple and convenient for the installation of the evaporator 230.

[0311] The evaporator 230 may also be equipped with a gravity sensor to obtain the weight change of the evaporator 230, so as to determine whether the evaporator 230 needs to be defrosted based on the weight change. The evaporator 230 may also be equipped with a vibrator to provide vibration force, which can assist in defrosting.

[0312] The following describes the heating structure inside the air duct assembly 200 used for defrosting.

[0313] like Figure 20 As shown, in some cases, a first heater 231 is installed above the drain plate 100, that is, the first heater 231 is positioned between the drain plate 100 and the evaporator 230. When the evaporator 230 needs defrosting, the first heater 231 is turned on, and the heat generated by the first heater 231 is used to heat the frost adhering to the surface of the evaporator 230. In some cases, the heat sink 234 of the evaporator 230 is provided with a snap-fit ​​groove for installing the first heater 231. The first heater 231 is secured to the heat sink 234 through the snap-fit ​​groove. The snap-fit ​​groove can be positioned at a lower position on the heat sink 234 so that the first heater 231 is located between the drain plate 100 and the heat exchange tube 233. In this case, the installation of the first heater 231 is simple and the defrosting effect is good.

[0314] Of course, the heating structure used for defrosting is not limited to being located between the drain plate 100 and the evaporator 230. In some cases, the heating structure can be located between the heat exchange tubes 233 of the evaporator 230. For example, the heating structure can be a second heater 232 inserted into the heat exchange fins 234 of the evaporator 230. The inserted structure is simple and easy to install, which helps to improve installation efficiency. The heat exchange fins 234 have mounting holes 2343, and the second heater 232 is inserted into the mounting holes 2343. The structure is simple and easy to assemble and disassemble.

[0315] The second heater 232 extends from the first end to the second end of the evaporator 230. The first end and the second end are opposite ends to provide sufficient heat to the evaporator 230. Here, the second end and the first end are two ends that form an angle with the extension direction of the heat sink 234, such as the left end and the right end of the evaporator 230.

[0316] The second heater 232 can be inserted between the two rows of heat exchange tubes 233 to heat and defrost the upper and lower rows of heat exchange tubes 233 evenly. At this time, the heat exchange efficiency between the second heater 232 and the heat exchange tubes 233, as well as between the second heater 232 and the heat exchange fins 234 on the heat exchange tubes 233, is higher, and the heating and defrosting efficiency can also be improved.

[0317] The second heater 232 is distributed in multiple layers along the height direction of the evaporator 230 to heat multiple locations of the evaporator 230.

[0318] The second heater 232 includes multiple fixedly connected heating rods, which are fixedly connected as a whole and directly inserted into the heat sink 234 during assembly, making assembly simple and efficient.

[0319] The second heater 232 includes multiple independent heating rods. The heating rods are positioned flexibly and can be easily replaced independently. The assembly and disassembly of the heating rods are also more convenient.

[0320] When the second heater 232 includes multiple independent heating rods, the heating rods can be staggered along the height direction of the evaporator 230, which can reduce the number of heating rods and fully defrost the evaporator 230.

[0321] When the heating structure is not placed between the drain plate 100 and the evaporator 230, the evaporator 230 can be placed directly on the drain plate 100, which can effectively reduce the gap between the evaporator 230 and the drain plate 100, thereby reducing the wind speed and improving the heat exchange efficiency.

[0322] The heating structure can be configured as a heating element 160, which is disposed on the surface of the drain plate 100. The heating element 160 can be integrated with the drain plate 100 into a single structure. The drain plate 100 with the heating element 160 can be installed below the evaporator 230 of various structures. This drain plate 100 can both receive and discharge defrost water and heat the defrost process. The drain plate 100 has a dual function. This drain plate 100 is installed inside the air duct assembly 200, which can reduce the height of the air duct assembly 200.

[0323] It should be noted that the drain plate 100 with heating element 160 can be installed below the horizontally placed evaporator 230. Alternatively, the drain plate 100 with heating element 160 can be installed below the evaporator 230 installed vertically inside the cabinet 400. The application scenario of the drain plate 100 is not limited here.

[0324] The heating element 160 can be integrally formed with the drainage plate 100 in any of the above embodiments. Alternatively, the heating element 160 can be integrally formed with other drainage plates 100 that can receive and drain defrost water, so that the drainage plate 100 can be widely used in a variety of applications.

[0325] The heating element 160 covers the lower surface of the drain plate 100, and the upper surface of the drain plate 100 is used to collect defrosting water. The heating element 160 located on the lower surface of the drain plate 100 can avoid direct contact with water, which can prevent leakage accidents due to circuit failure and improve the safety performance of the refrigeration equipment.

[0326] Of course, provided that the waterproof performance of the heating element 160 is guaranteed, the heating element 160 can also cover the upper surface of the drainage plate 100.

[0327] The heating element 160 may be a heating wire or a heating film disposed on the surface of the drainage plate 100.

[0328] The following explanation uses a heating film as the heating element.

[0329] The heating element 160 includes an insulating layer and a composite heating layer disposed on the lower surface of the insulating layer. The insulating layer is connected to the lower surface of the drainage plate 100, and the drainage plate 100 and the composite heating layer are insulated and protected by the insulating layer, which can reduce the risk of leakage. At this time, the material of the drainage plate 100 is not limited. The drainage plate 100 can be made of steel, which is easy to process and can also ensure the heat conduction effect of the drainage plate 100.

[0330] The heating element 160 includes a composite heating layer, and the drainage plate 100 is an insulating and thermally conductive structure. The composite heating layer is disposed on the lower surface of the drainage plate 100. Since the drainage plate 100 has both thermal conductivity and insulation functions, the insulation layer can be omitted, making the processing of the drainage plate 100 simpler and helping to improve production efficiency. The drainage plate 100 can be a structure made of a composite of ceramic and glass fiber materials.

[0331] The composite heating layer of the heating element 160 can be a graphene heating layer, a nano heating layer, a carbon fiber heating layer, or a composite of various electric heating materials. When the composite heating layer is energized, it can convert electrical energy into heat energy for the heating element 160, providing heat for defrosting. Taking a graphene heating layer as an example, a graphene heating layer is a planar thin film composed of hexagonal honeycomb lattice carbon atoms, with a thickness of only one atom, thus allowing control over the thickness of the heating element 160.

[0332] It should be noted that when the heating element 160 is placed on the lower surface of the drainage plate 100, an insulating layer is also required below the composite heating layer to reduce heat diffusion downwards and ensure heating efficiency. Thermally conductive adhesive is used to bond the composite heating layer to the insulating layer, the composite heating layer to the drainage plate 100, and the insulating layer to the composite heating layer. This adhesive layer provides heat conduction while ensuring reliable connection between the layers.

[0333] The heating element 160 includes multiple heating zones distributed along a set direction. The heating power per unit area of ​​the heating zone gradually increases along the set direction. The heating power of the corresponding heating zone can be adjusted according to the different amounts of frost at different locations, which can achieve rapid and sufficient defrosting and reduce power consumption.

[0334] When the composite heating layer uses graphene heating layers, the grid distribution of the graphene heating layers in different heating zones is different, resulting in different resistance distributions within the graphene heating layers in different heating zones. The lower surface of the drainage plate 100 can be distributed with two graphene heating layers of different resistances; of course, it is also possible to distribute graphene heating layers of any number of different resistances. Furthermore, graphene heating layers with different resistances can be connected in series, in parallel, or connected to different circuits.

[0335] In the above embodiment, the heating element 160 is applied to the above-mentioned air duct assembly 200 for defrosting the evaporator 230, which can reduce the space occupied by the heater and reduce the height of the air duct assembly 200, thereby reducing the volume of the air duct assembly 200. Refrigeration equipment with this air duct assembly 200 can appropriately increase the storage space and play the role of expanding the capacity of the refrigeration equipment.

[0336] The drainage plate 100 with heating element 160 in the above embodiment can be used in combination with at least one of the first heater 231 and the second heater 232 to improve defrosting efficiency.

[0337] It should be noted that the heating element 160 can be applied to the drainage plate 100 of the above embodiment, but is not limited thereto. The heating element 160 can also be applied to drainage plates with other structures.

[0338] The aforementioned heating structure for defrosting needs to be electrically connected to an external power source via a wire to the air duct assembly 200. The wire can be routed through the wiring hole provided in the aforementioned fan cover 240, making the structure simple and easy to assemble.

[0339] The structure of the partition component 210 is described below.

[0340] The partition component 210 and the air duct component 220 define the first cavity 282, the air inlet, and the air outlet. An evaporator 230 and a drain plate 100 are installed inside the first cavity 282. Air entering through the air inlet undergoes heat exchange within the first cavity 282 and is then discharged through the air outlet. The air outlet delivers air into the room, providing a cooling environment for the refrigeration equipment. When the air inlet includes a first air inlet 201 and a second air inlet 202, the first air inlet 201 and the second air inlet 202 receive air at different temperatures.

[0341] The partition component 210 can be fixedly connected to the container body, such as by welding, snap-fitting, or fasteners. (Reference) Figure 6 and Figure 20 As shown, the partition component 210 includes a first plate 211 and a second plate 212. A first insulation layer 213 is provided between the first plate 211 and the second plate 212. The first insulation layer 213 is detachably disposed between the first plate 211 and the second plate 212, or the first insulation layer 213 is integrally foamed with the first plate 211 and the second plate 212.

[0342] When the first insulation layer 213 is integrally foamed with the first plate 211 and the second plate 212, the first plate 211 and the second plate 212 can be fixedly installed with the cabinet body first. The first insulation layer 213 is integrally foamed with the insulation layer of the cabinet 400, and the sealing performance between the partition component 210 and the cabinet body is better, avoiding air leakage between the first compartment 410 and the second compartment 420.

[0343] refer to Figure 6 and Figure 20 As shown, the partition component 210 also includes a third plate 214. The third plate 214, together with the first plate 211 and the second plate 212, defines an installation space. The third plate 214 is located in front of the air duct assembly 200, and the installation space is located in front of the partition component 210. The installation space is used to install functional components, such as controllers, lighting modules, interaction modules, and display modules. When the second air inlet 202 is located in front of the air duct assembly 200, the part of the partition component 210 that defines the installation space is located at the front end of the second air inlet 202. This part of the partition component 210 serves to cover the second air inlet 202, thus concealing it. The lower part of the second air inlet 202 communicates with the second compartment 420.

[0344] It should be noted that the second air inlet 202 is not limited to being located on the front side of the air duct assembly 200; the second air inlet 202 can also be located on the lower front side of the air duct assembly 200.

[0345] refer to Figures 26 to 28 As shown, the partition component 210 and the air duct component 220 define a first cavity 282, a first air inlet 201, a second air inlet 202, and an exhaust outlet. The first air inlet 201 and the second air inlet 202 receive air at different temperatures. The first air inlet 201 is located on a first side of the air duct assembly 200, and the second air inlet 202 is located on a second side of the air duct assembly 200. The first side and the second side are adjacent, or the first air inlet 201 and the second air inlet 202 are located on the same side. The partition component 210 is configured to face the partition component. The recessed portion on the inner side of 210 is adapted to guide a portion of the air intake of at least one of the first air inlet 201 and the second air inlet 202 into the recessed portion. That is, a portion of the air intake of at least one of the first air inlet 201 and the second air inlet 202 is diverted to their respective corresponding recessed portions, so as to reduce the cross-contact air volume in the air intake of the first air inlet 201 and the second air inlet 202, reduce the amount of frost in the cross-contact area of ​​the air intake, thereby extending the time between two defrosts, reducing the number of defrosts, and reducing the power consumption of defrosting.

[0346] Taking the example of the first air inlet 201 and the second air inlet 202 being located on different sides and having intersecting air intake directions, during the air intake process, part of the airflow from the first air inlet 201 is guided along the extension direction of the corresponding concave portion, while another part continues to flow along the air intake direction. When the first air inlet 201 and the second air inlet 202 intake simultaneously, the airflow continuing to flow along the air intake direction intersects with the airflow from the second air inlet 202, reducing the amount of airflow that crosses between the airflow from the first air inlet 201 and the airflow from the second air inlet 202. The principle behind setting the concave portion in the corresponding area of ​​the second air inlet 202 is the same and will not be elaborated here.

[0347] Taking the first air inlet 201 and the second air inlet 202 as being located on the same side (e.g., both located on the front side) and having the same air intake direction as an example, the extension direction of the concave portion is consistent with the extension direction of the corresponding air inlet. Part of the air intake of the first air inlet 201 flows along the extension direction of the corresponding concave portion, while another part of the air intake of the first air inlet 201 continues to flow along its flow direction.

[0348] refer to Figure 26 As shown, the recessed portion includes a first recessed portion 2121. The first recessed portion 2121 extends along the second side of the partition member 210 to the third side with a first preset width L1 and a first preset length L2. The second air inlet 202 is located on the second side, and the third side is the side that is not adjacent to the second side. The third side may be the side where the exhaust port is located. The first recessed portion 2121 is close to the first side edge of the partition member 210, and the first air inlet 201 is located on the first side.

[0349] The air entering the first cavity 282 from the first air inlet 201 flows in the direction of air intake of the first air inlet 201 and crosses with the air intake of the second air inlet 202. The other part flows in the extension direction of the first concave portion 2121. The first concave portion 2121 plays a guiding and diverting role to reduce the amount of airflow that meets the air intake of the first air inlet 201 and the second air inlet 202, thereby reducing the amount of frost.

[0350] The first preset width L1 can be set to be less than or equal to the minimum distance between the first air inlet 201 and the second air inlet 202; the first preset length L2 can be set to be less than or equal to the length of the evaporator 230, and the length direction of the evaporator 230 is from the air inlet to the air outlet.

[0351] refer to Figure 26 As shown, the first concave portion 2121 is constructed with a first top surface 2123 and a first guide surface 2122 connected to the first top surface 2123. The first guide surface 2122 is inclined downward in a direction away from the first top surface 2123. The first guide surface 2122 is located on the side away from the first air inlet 201. The first guide surface 2122 guides the air to the direction of the exhaust port, avoiding the accumulation of air in the groove restricted by the first concave portion 2121, and ensuring the circulation effect of the air.

[0352] When the first side of the first cavity 282 includes two or more sides, such as the first side being the opposite left and right sides, the first air inlet 201 is located on the left and right sides of the air duct assembly 200, and the partition component 210 is symmetrically provided with first recesses 2121 on both sides. Each first recess 2121 corresponds to a first air inlet 201, ensuring that the air intake of each first air inlet 201 is diverted through the first recess 2121.

[0353] The first guide surface 2122 may be disposed on the rear, left, or right side of the first recess 2121. For example... Figure 26 As shown, one first guide surface 2122 is located on the rear side of the first recess 2121, and another first guide surface 2122 is located on the left side of the first recess 2121. Figure 26 To illustrate the first guide surface 2122 at different positions, in actual applications, the two first recesses 2121 are generally arranged symmetrically.

[0354] refer to Figure 27 and Figure 28 As shown, the concave portion includes a second concave portion 2124, one side of which faces the second air inlet 202, so that the second concave portion 2124 can guide part of the air intake of the second air inlet 202 to flow along the groove restricted by the second concave portion 2124. The second air inlet 202 also diverts part of the air intake, which can reduce the air volume of the first air inlet 201 and the second air inlet 202 converging, and also reduce the amount of frost.

[0355] The second recess 2124 extends along the second side of the partition member 210 to the third side with a second preset width L3 and a second preset length L4. The second preset length L4 is less than the length of the evaporator 230 in the first cavity 282. The length of the evaporator 230 is the length along the second side to the third side. The second side and the third side here can be referred to the explanation above. The length of the second recess 2124 is less than the length of the evaporator 230 to prevent the air in the first recess 2121 from flowing directly to the exhaust port, ensuring that the air in the first recess 2121 exchanges heat with the evaporator 230 before being discharged from the exhaust port.

[0356] The second recess 2124 has a second top surface 2126 and a second guide surface 2125 connected to the second top surface 2126. The second guide surface 2125 is inclined downward in a direction away from the second top surface 2126 and faces the side where the exhaust port is located. The inclined surface of the second guide surface 2125 guides the air downward so that the air can flow fully to the evaporator 230.

[0357] In some cases, the first recess 2121 and the second recess 2124 can be used together, that is, the partition component 210 is provided with both the first recess 2121 and the second recess 2124. In this case, the second recess 2124 and the first recess 2121 are separated by the third wall plate 215. The first recess 2121 and the second recess 2124 have the same recess depth, which is simple in structure and easy to process.

[0358] When the partition component 210 is provided with both a first recess 2121 and a second recess 2124, the first preset length L2 is greater than or equal to the second preset length L4. The first recess 2121 fully guides the air intake of the first air inlet 201 towards the exhaust port, and the second recess 2124 guides the air intake of the second air inlet 202 towards the exhaust port, which can also ensure the heat exchange effect between the air and the evaporator 230.

[0359] It should be noted that the air in the second concave portion 2124 may also include the air after the air intake from the first air intake 201 and the air intake from the second air intake 202 have been mixed.

[0360] The evaporator 230 includes a heat exchange tube 233 and a heat sink 234 connected to the heat exchange tube 233. The heat sink 234 extends from the side where the second air inlet 202 is located to the side where the air outlet is located. The heat sink 234 can guide the air to flow from the side where the air inlet is located to the side where the air outlet is located.

[0361] The heat sink 234 has a protrusion that extends into the second recess 2124 to ensure that the air in the second recess 2124 can fully exchange heat with the heat sink 234.

[0362] refer to Figure 29 As shown, the partition component 210 is constructed with a third recess 2127. One side of the third recess 2127 faces the first air inlet 201, and the other side faces the second air inlet 202. The first air inlet 201 and the second air inlet 202 are located on adjacent sides, so that the third recess 2127 is located in the intersection area corresponding to the first air inlet 201 and the second air inlet 202. The third recess 2127 increases the space of the air inlet intersection area of ​​the first air inlet 201 and the second air inlet 202, increases the defrosting space, prolongs the time that air can enter at the end where the air inlet is located, reduces the number of defrosting times, can prolong the defrosting cycle, and saves defrosting power consumption.

[0363] The first air inlet 201 and the second air inlet 202 are located on adjacent sides, for reference. Figure 5 As shown, the first air inlet 201 is located on the left and right sides of the air duct assembly 200 and is connected to the first chamber 410 through the return air component 430. The second air inlet 202 is located on the front side of the air duct assembly 200. Both the first air inlet 201 and the second air inlet 202 are located at the front of the air duct assembly 200.

[0364] The first air inlet 201 and the second air inlet 202 can also be located on opposite sides (not shown in the figure). For example, the first air inlet 201 is located on the left side of the air duct assembly 200, and the second air inlet 202 is located on the right side of the air duct assembly 200. In this case, the third recess 2127 can provide a larger confluence space for the air intake of the first air inlet 201 and the second air inlet 202. The first air inlet 201 and the second air inlet 202 can also be located on opposite sides, which can increase the distance between the first air inlet 201 and the second air inlet 202 and appropriately reduce the air volume of cross heat exchange.

[0365] The third recess 2127 extends with a third preset width L5 along the side where the second air inlet 202 is located to the side where the exhaust outlet is located, and the third preset length L6 is less than the length of the evaporator 230 in the first cavity 282. The length of the evaporator 230 is the length along the side where the second air inlet 202 is located to the side where the exhaust outlet is located.

[0366] refer to Figure 29 As shown, the width direction of the third recess 2127 is perpendicular to the direction from the second air inlet 202 to the air outlet. The third preset width L5 is the dimension in this direction, and the third preset length L6 is the length from the second air inlet 202 to the air outlet.

[0367] The third recess 2127 has a third top surface 2128 and a third guide surface 2129 connected to the third top surface 2128. The third guide surface 2129 slopes downward away from the third top surface 2128 and faces the side where the exhaust port is located. The third guide surface 2129 guides the air in the third recess 2127 toward the evaporator 230 so that this part of the air can be fully heat-exchanged before being discharged.

[0368] Based on the above embodiments of various components such as drainage board 100, fan cover 240, fan 270, duct component 220, defrosting heating structure and partition component 210, the following structure of duct assembly 200 is proposed, but duct assembly 200 is not limited to the following structure.

[0369] Combination Figures 1 to 13As shown, the air duct assembly 200 includes a partition component 210 and an air duct component 220. The partition component 210 and the air duct component 220 form a connected first cavity 282, an air inlet, and an air outlet. The air inlet is divided into a first air inlet 201 and a second air inlet 202. A drainage plate 100 is provided in the first cavity 282. The drainage plate 100 is constructed with a water guiding portion that is recessed downward relative to the top surface of the drainage plate 100. The water guiding portion extends to both sides of the preset surface to the edge of the drainage plate 100 so that the edge of the drainage plate 100 forms an opening 170. The opening 170 faces the side where the first air inlet 201 is located, so that part of the air entering the first air inlet 201 is suitable to flow into the first cavity 282 through the opening 170 and along the extending direction of the water guiding portion. Part of the air intake at the first air inlet 201 is introduced into the first cavity 282 through the opening 170 and along the extension direction of the water guide. This can divert part of the air intake at the first air inlet 201, reducing the amount of air that crosses with the air intake at the second air inlet 202. This reduces the amount of frost that condenses due to the cross contact between the air intake at the first air inlet 201 and the air intake at the second air inlet 202, thus reducing the number of defrosting cycles, extending the defrosting cycle, reducing the power consumption required for defrosting, and reducing the power consumption of the refrigeration equipment.

[0370] Water guiding section is Figures 1 to 13 The structure shown is at least one, that is, the water guiding part can be at least one of the second water guiding part 130 and the third water guiding part 140.

[0371] Understandably, the air duct assembly 200 also includes a first drainage component 260 located on the first side. The first drainage component 260 communicates with the opening 170 of the drainage plate 100 and has a drainage outlet. The first drainage component 260 has both drainage and air intake functions.

[0372] Understandably, the air duct assembly 200 also includes a fan cover 240, which defines a second cavity 281. A fan 270 is housed within the second cavity 281. The rotation axis of the fan 270 forms a first angle α1 with the vertical direction. The fan cover 240 has a ventilation opening 244, and the inlet of the fan 270 faces the ventilation opening 244. The fan 270 is horizontally positioned within the fan cover 240, which reduces the height of the fan 270, thereby reducing the height of the air duct assembly 200 and facilitating the installation of a drawer below the air duct assembly 200.

[0373] It is understandable that an evaporator 230 is installed in the first cavity 282, and a drain plate 100 is located below the evaporator 230. The angle between the evaporator 230 and the horizontal direction is less than or equal to a preset angle, or the evaporator 230 is parallel to the horizontal direction. The evaporator 230 is horizontally placed, and its downward tilt angle can be less than or equal to 7° or horizontal. The space occupied by the evaporator 230 in the height direction is reduced, and the height of the air duct assembly 200 is also reduced accordingly, which helps to increase the space of the refrigeration equipment.

[0374] The partition component 210, the air duct component 220, the first drainage component 260, the fan 270, the fan cover 240, the drainage plate 100, and the evaporator 230, etc., can all adopt the structure in the above embodiments, and will not be described in detail here.

[0375] Combination Figures 10 to 25 As shown, the air duct assembly 200 includes a partition component 210, an air duct component 220, an evaporator 230, and a drain plate 100. The partition component 210 and the air duct component 220 form a connected first cavity 282, a first air inlet 201, a second air inlet 202, and an exhaust outlet. The first air inlet 201 is located on the first side of the first cavity 282, and the second air inlet 202 is located on the second side of the first cavity 282, with the first side and the second side adjacent to each other. The evaporator 230 is disposed inside the first cavity 282. The drain plate 100 is located... Inside the first cavity 282, a drain plate 100 is located below the evaporator 230 and has a water guide portion and a drain portion 110 recessed downwards relative to the top surface of the drain plate 100. The drain portion 110 has an outlet 114 that communicates with the water guide portion. The extension direction of the drain portion 110 forms a fifth angle with the extension direction of the water guide portion. The end of the water guide portion has an opening 170 facing the first air inlet 201, so that the air from the first air inlet 201 can flow into the first cavity 282 along the extension direction of the water guide portion. The water guide portion serves to guide the air intake of the first air inlet 201, so that a portion of the air intake of the first air inlet 201 flows into the first cavity 282 along the water guide portion, reducing the amount of air that crosses contact between the air intake of the first air inlet 201 and the second air inlet 202, reducing the frost that condenses due to the contact of air with different temperatures, thereby extending the defrosting interval, reducing the number of defrosting cycles, saving power consumption during defrosting, and achieving energy saving.

[0376] At this point, the structure of the water guiding section can be a third water guiding section 140.

[0377] It is understandable that the outlet 114 of the drain plate 100 and the exhaust port are located on the same side of the first cavity 282, and the heat of the defrosting water flowing to the outlet 114 of the drain plate 100 can play a defrosting role for the fan 270 on the same side.

[0378] It is understandable that the top surface of the drain plate 100 and the bottom surface of the evaporator 230 are both inclined downwards at a preset angle, or the top surface of the drain plate 100 and the bottom surface of the evaporator 230 are both parallel to the horizontal plane. The evaporator 230 is placed horizontally, and its downward inclination angle can be less than or equal to 7° or horizontal. The space occupied by the evaporator 230 in the vertical direction is reduced, and the height of the air duct assembly 200 is also reduced accordingly, which helps to increase the space of the refrigeration equipment.

[0379] The air duct assembly 200 also includes a first drainage component 260 located on the first side, the first drainage component 260 surrounding and communicating with the opening 170, and the first drainage component 260 having a first drainage outlet 262. The first drainage component 260 can be disposed within the foam layer of the cabinet 400 to increase the space of the compartment.

[0380] The air duct assembly 200 also includes a fan shroud 240, which defines a second cavity 281. A fan 270 is disposed within the second cavity 281. The rotation axis of the fan 270 forms a first angle α1 with the vertical direction. The fan shroud 240 has a ventilation opening 244, and the inlet of the fan 270 faces the ventilation opening 244. The fan 270 is horizontally positioned within the fan shroud 240, reducing the height of the fan 270 and thus reducing the overall height of the air duct assembly 200.

[0381] The partition component 210, the air duct component 220, the first drainage component 260, the fan 270, the fan cover 240, the drainage plate 100, and the evaporator 230, etc., can all adopt the structure in the above embodiments, and will not be described in detail here.

[0382] Combination Figures 10 to 25 As shown, the air duct assembly 200 includes a partition component 210, an air duct component 220, an evaporator 230, and a drain plate 100. The partition component 210 and the air duct component 220 form a connected first cavity 282, a first air inlet 201, a second air inlet 202, and an exhaust outlet. The first air inlet 201 is located on the first side of the first cavity 282, and the second air inlet 202 is located on the second side of the first cavity 282. The first side and the second side are adjacent. The evaporator 230 is disposed in the first cavity 282. The drain plate 100 is located in the first cavity 282. The top surface of the drain plate 100 is located below the evaporator 230. The drain plate 100 is constructed with a water guiding part and an outlet 114. The water guiding part is recessed relative to the top surface of the drain plate 100 and communicates with the outlet 114. The extending direction of the water guiding part forms a fourth angle with the air outlet direction of the first cavity 282.

[0383] At this time, the water guiding part can be at least one of the second water guiding part 130 and the third water guiding part 140.

[0384] The evaporator 230 has an angle less than or equal to a preset angle with the horizontal direction, or the evaporator 230 is set along the horizontal direction. The evaporator 230 is horizontally placed, and its downward tilt angle can be less than or equal to 7° or horizontal. The space occupied by the evaporator 230 in the vertical direction is reduced, and the height of the air duct assembly 200 is also reduced, which helps to increase the space of the refrigeration equipment.

[0385] The duct assembly 200 also includes a fan 270 located on one side of the first cavity 282, with the outlet 114 of the drain plate 100 facing the side where the fan 270 is located. The outlet 114 of the drain plate 100 is offset from the inlet of the fan 270 to prevent water from flowing to the fan 270.

[0386] The second air inlet 202 is located on the front side of the air duct assembly 200 and communicates with the second compartment 420. The first air inlet 201 is located on at least one of the left and right sides of the air duct assembly 200 and is close to the front end. The first air inlet 201 communicates with the first compartment 410 to allow return air through the front end of the air duct assembly 200.

[0387] The partition component 210, the air duct component 220, the first drainage component 260, the second drainage component 290, the fan 270, the fan cover 240, the drainage plate 100, and the evaporator 230, etc., can all adopt the structure in the above embodiments, and will not be described in detail here.

[0388] Combination Figures 1 to 25 As shown, the air duct assembly 200 includes a partition component 210, an air duct component 220, a fan 270, an evaporator 230, and a drain plate 100. The partition component 210 and the air duct component 220 form a connected first cavity 282, a first air inlet 201, a second air inlet 202, and an exhaust outlet. The first air inlet 201 is located on the first side of the first cavity 282, and the second air inlet 202 is located on the second side of the first cavity 282. The first side and the second side are adjacent. Evaporator 230 is located within the first cavity 282; Drainage plate 100 is located within the first cavity 282; The top surface of drainage plate 100 is located below evaporator 230, and drainage plate 100 has a water guiding portion recessed downward relative to the top surface of drainage plate 100. The water guiding portion extends to both sides of the preset surface to the edge of drainage plate 100, so that the edge of drainage plate 100 forms an opening 170 suitable for drainage, and the opening 170 faces the first side; Fan 270 is located on the third side of the first cavity 282. That is, the drainage positions of fan 270 and drainage plate 100 are located on different sides, which can reduce the space occupied by the side where fan 270 is located, thereby increasing the compartment space within the refrigeration equipment to provide a large-capacity refrigeration equipment.

[0389] The air duct assembly 200 also includes a first drainage component 260 located on the first side. The drainage channel of the first drainage component 260 communicates with the opening 170, and the first drainage component 260 is configured with a drainage outlet. The first drainage component 260 can be formed within the foam layer of the cabinet 400, without occupying the space of the compartment, effectively expanding the capacity of the compartment. Drainage from the opening 170 side of the drainage board 100 is achieved through the first drainage component 260, and the structure of the first drainage component 260 can be found in the above description.

[0390] The angle between the evaporator 230 and the horizontal direction is less than or equal to a preset angle. The evaporator 230 is placed horizontally and its downward tilt angle can be less than or equal to 7°. The space occupied by the evaporator 230 in the vertical direction is reduced, and the height of the air duct assembly 200 is also reduced, which helps to increase the space of the refrigeration equipment.

[0391] The second air inlet 202 is located on the second side of the first cavity 282. The first side and the second side are adjacent. The second air inlet 202 and the first air inlet 201 have air inlets with different temperatures. The chambers connected by the first air inlet 201 and the second air inlet 202 have different ambient temperatures.

[0392] The first side is at least one of the left and right sides, with the first air inlet 201 and the first drainage component 260 located at least one of the left and right sides; the second side is the front side, with the second air inlet 202 located on the front side; the third side is the rear side, with the fan 270 located on the rear side.

[0393] When the first compartment 410 is a refrigerator compartment and the second compartment 420 is a freezer compartment, the first air inlet 201 connected to the refrigerator compartment is located on the left and right sides of the air duct assembly 200, and the second air inlet 202 connected to the freezer compartment is located on the front side of the air duct assembly 200. The front end of the second air inlet 202 is blocked by the partition component 210. The second air inlet 202 is connected to the freezer compartment through the lower part of the partition component 210. A fan 270 is installed on the rear side of the air duct assembly 200, and the fan 270 exhausts air from the exhaust port.

[0394] The air duct assembly 200 also includes a fan cover 240 disposed between the partition component 210 and the air duct component 220. The fan cover 240 forms a second cavity 281, in which a fan 270 is disposed. The fan cover 240 has a vent 244, and the inlet of the fan 270 faces the vent 244. The fan cover 240 serves to protect the fan 270.

[0395] The rotation axis of the fan 270 forms a first angle α1 with the vertical direction, which reduces the vertical dimension occupied by the fan 270. The vent 244 is located above the fan 270 so that the fan 270 is supported by the duct component 220, and the upper part of the fan 270 corresponds to the position of the evaporator 230. The central axis of the vent 244 is collinear with the rotation axis of the fan 270 to ensure that the air in the first cavity 282 is smoothly discharged from the exhaust port by the fan 270.

[0396] The fan cover 240 is constructed with a guide surface 2411 located above the fan 270 and facing the fan 270. The guide surface 2411 is inclined upward or downward along the side facing the drain plate 100. The guide surface 2411 can collect water vapor and discharge the collected water from one side of the fan cover 240.

[0397] The partition component 210, the air duct component 220, the first drainage component 260, the fan 270, the fan cover 240, the drainage plate 100, and the evaporator 230, etc., can all adopt the structure in the above embodiments, and will not be described in detail here.

[0398] refer to Figures 1 to 13 As shown, the air duct assembly 200 includes a partition component 210, an air duct component 220, a fan 270, an evaporator 230, and a drain plate 100. The partition component 210 and the air duct component 220 form a connected first cavity 282, a first air inlet 201, a second air inlet 202, and an exhaust outlet. The first air inlet 201 is located on the first side of the first cavity 282, and the second air inlet 202 is located on the second side of the first cavity 282. The first side and the second side are adjacent. The evaporator 230 is disposed inside the first cavity 282. A drain plate 100 is located inside the first cavity 282; the drain plate 100 is located below the evaporator 230, and the drain plate 100 has an opening 170 and an outlet 114, with the opening 170 facing a first side and the outlet 114 facing a third side; a first drain component 260 is located on the first side and has a drain channel communicating with the opening 170, so that water on the drain plate 100 is introduced into the first drain component 260 through the opening 170; a second drain component 290 is located on the third side and has a water guiding channel communicating with the outlet 114. The first drain component 260 and the second drain component 290 cooperate to allow the air duct assembly 200 to drain water from different sides, increasing the drainage path and helping the defrosting water collected by the drain plate 100 to be discharged from multiple directions, thereby improving defrosting and drainage efficiency.

[0399] The duct assembly 200 also includes a fan shroud 240 and a fan 270 disposed within the fan shroud 240. A second drainage component 290 is disposed within or below the fan shroud 240. The fan shroud 240 is configured with a vent 244. The rotation axis of the fan 270 forms a first angle with the vertical direction, and the inlet of the fan 270 faces the vent 244. The fan 270 is horizontally mounted, which helps to reduce the height of the duct assembly 200.

[0400] The angle between the evaporator 230 and the horizontal direction is less than or equal to a preset angle. The evaporator 230 is placed horizontally and its downward tilt angle can be less than or equal to 7°. The space occupied by the evaporator 230 in the vertical direction is reduced, and the height of the air duct assembly 200 is also reduced, which helps to increase the space of the refrigeration equipment.

[0401] The partition component 210, the air duct component 220, the first drainage component 260, the second drainage component 290, the fan 270, the fan cover 240, the drainage plate 100, and the evaporator 230, etc., can all adopt the structure in the above embodiments, and will not be described in detail here.

[0402] refer to Figures 10 to 16As shown, the air duct assembly 200 includes a baffle component 210, an air duct component 220, a fan 270, an evaporator 230, and a drain plate 100. The baffle component 210 and the air duct component 220 form a connected first cavity 282, an air inlet, and an air outlet. The evaporator 230 is disposed within the first cavity 282. The drain plate 100 is located within the first cavity 282 and below the evaporator 230. The drain plate 100 has a drain section 110 and a water guiding section. The drain section 110 has an outlet 114, and the drain section 110 is recessed relative to the top surface of the drain plate 100. The water guide section is connected to the drainage section 110. The water guide section is recessed relative to the top surface of the drainage plate 100, and the extension direction of the water guide section forms a fifth angle with the air outlet direction of the first cavity 282. The fan cover 240 constructs a vent 244, a second cavity 281, and a water guide channel. The second cavity 281 is connected to the first cavity 282 through the vent 244, and the water guide channel is connected to the outlet 114. The fan 270 is located inside the second cavity 281. The rotation axis of the fan 270 forms a first angle with the vertical direction, and the inlet of the fan 270 is connected to the first cavity 282 through the vent 244. Drainage is carried out through the fan cover 240 used to install the fan 270, which makes the structure of the air duct assembly 200 more compact, reduces the number of parts in the air duct assembly 200, and makes assembly easier. The horizontal placement of the fan 270 also reduces the height of the air duct assembly 200.

[0403] The water channel slopes downwards in a direction away from outlet 114 so that water can be guided by the angle of inclination so that the water can be discharged quickly and completely.

[0404] The angle between the evaporator 230 and the horizontal direction is less than or equal to a preset angle. The evaporator 230 is placed horizontally and its downward tilt angle can be less than or equal to 7°. The space occupied by the evaporator 230 in the vertical direction is reduced, and the height of the air duct assembly 200 is also reduced, which helps to increase the space of the refrigeration equipment.

[0405] The air duct component 220 and the partition component 210 form an air inlet and an air outlet that communicate with the first cavity 282. The drainage part 110 extends along the air inlet to the air outlet so that water from the outlet 114 of the drainage plate 100 is discharged through the water guide channel of the fan cover 240.

[0406] The air inlet includes a first air inlet 201 and a second air inlet 202. The first air inlet 201 and the second air inlet 202 allow air to enter at different temperatures. The first air inlet 201 and the second air inlet 202 are located on different sides of the first cavity 282. The first air inlet 201 is located on the first side of the first cavity 282, and the second air inlet 202 is located on the second side of the first cavity 282. The first side and the second side are adjacent. The first air inlet 201 is located near the front side to allow air to enter from the front end of the air duct assembly 200.

[0407] The partition component 210, the air duct component 220, the first drainage component 260, the second drainage component 290, the fan 270, the fan cover 240, the drainage plate 100, and the evaporator 230, etc., can all adopt the structure in the above embodiments, and will not be described in detail here.

[0408] refer to Figures 1 to 38 As shown, the air duct assembly 200 includes a baffle component 210, an air duct component 220, a fan 270, an evaporator 230, a drain plate 100, and a flow divider. The baffle component 210 and the air duct component 220 form a connected first cavity 282, an air inlet, and an air outlet. The evaporator 230 is disposed within the first cavity 282. The drain plate 100 is located within the first cavity 282 and below the evaporator 230. The flow divider is disposed in at least one of the baffle component 210 and the air duct component 220, and is used to guide a portion of the air intake from the first air inlet 201 along the guiding direction of the flow divider. The flow divider serves to divert a portion of the air intake from the first air inlet 201, thereby reducing the airflow volume at the intersection of the air intake from the first air inlet 201 and the air intake from the second air inlet 202, reducing frost caused by temperature differences, extending the time between two defrost cycles, and reducing the power consumption of defrosting.

[0409] The structure of the flow divider can be referenced. Figures 21 to 38 As shown.

[0410] The diversion section is a first recess 2121 constructed on the partition member 210. The first recess 2121 is recessed toward the inner side of the partition member 210. The first recess 2121 is adapted to guide part of the incoming air from the first air inlet 201 into the first recess 2121. The first air inlet 201 is located at least one on the left and right sides of the first cavity 282.

[0411] The air duct assembly 200 also includes an evaporator 230 disposed in the first cavity 282. The evaporator 230 includes a heat exchange tube 233 and a heat sink 234. The heat sink 234 includes a first heat sink 2341 and a second heat sink 2342. The first heat sink 2341 is connected to the heat exchange tube 233, and multiple first heat sinks 2341 form a first heat dissipation section. The second heat sink 2342 is connected to the heat exchange tube 233 and is disposed on at least one side of the first heat dissipation section. The flow distribution section is a ventilation section 23421 constructed on the second heat sink 2342. The projection of the first heat sink 2341 on the second heat sink 2342 covers the ventilation section 23421. The projection of the first air inlet 201 on the second heat sink 2342 covers the ventilation section 23421. Both the first heat sink 2341 and the second heat sink 2342 extend from the second side to the third side, and the third side is the side where the exhaust port is located. The specific implementation method and effects of the ventilation section 23421 can be referred to the above embodiment of the evaporator 230, and will not be repeated here.

[0412] The angle between the evaporator 230 and the horizontal direction is less than or equal to a preset angle. The evaporator 230 is placed horizontally and its downward tilt angle can be less than or equal to 7°. The space occupied by the evaporator 230 in the vertical direction is reduced, and the height of the air duct assembly 200 is also reduced, which helps to increase the space of the refrigeration equipment.

[0413] The partition component 210, the air duct component 220, the first drainage component 260, the second drainage component 290, the fan 270, the fan cover 240, the drainage plate 100, and the evaporator 230, etc., can all adopt the structure in the above embodiments, and will not be described in detail here.

[0414] Combination Figures 1 to 25 As shown, the air duct assembly 200 includes a partition component 210, an air duct component 220, an evaporator 230, and a drain plate 100. The air duct component 220 is located below the partition component 210 and forms a first cavity 282, an air inlet, and an air outlet connected to the partition component 210. The evaporator 230 is disposed in the first cavity 282, and the angle between the evaporator 230 and the horizontal direction is less than or equal to a preset angle. The drain plate 100 is disposed in the first cavity 282 and is located below the evaporator 230. The drain plate 100 has an outlet 114 and a water guide portion recessed relative to the top surface of the drain plate 100. The water guide portion is connected to the outlet 114, and the extension direction of the water guide portion forms a fourth angle with the direction from the air inlet to the air outlet. The heating element 160 is disposed on the surface of the drain plate 100. By placing the evaporator 230 horizontally within the air duct assembly 200, and controlling the downward tilt angle of the evaporator 230 relative to the horizontal direction within a preset angle, the height occupied by the evaporator 230 can be reduced, thus reducing the height of the air duct assembly 200. The drain plate 100 is provided with a water guide, which satisfies the drainage requirements and also meets the requirements for air supply and heat exchange, ensuring that the air in the first cavity 282 fully exchanges heat with the evaporator 230 before being discharged. The drain plate 100 with the water guide cooperates with the evaporator 230 to reduce the tilt angle of the evaporator 230. Furthermore, by setting a heating element 160 on the drain plate 100 to save the height occupied by the heating defrosting structure, the height of the air duct assembly 200 is further reduced.

[0415] In combination with the above, the evaporator 230, the drain plate 100 and the heating element 160 can be used to significantly reduce the height of the air duct assembly 200.

[0416] The heating element 160 covers the lower surface of the drainage plate 100, which can prevent the heating element 160 from directly contacting the defrosting water collected above the drainage plate 100 and reduce safety hazards.

[0417] Among them, the partition component 210, the air duct component 220, the first drainage component 260, the second drainage component 290, the fan 270, the fan cover 240, the drainage plate 100, the heating element 160, and the evaporator 230 can all adopt the structure in the above embodiments, and will not be described in detail here.

[0418] When the air duct assembly 200 in the above embodiments is applied to the box liner and the refrigeration equipment, the box liner and the refrigeration equipment have the above-mentioned beneficial effects.

[0419] The following describes an implementation method for a refrigeration device, based on the aforementioned air duct components.

[0420] The refrigeration equipment includes a cabinet and an air duct assembly. The air duct assembly is located inside the cabinet and divides it into a first compartment and a second compartment. The air duct assembly includes a partition component, an air duct component, an evaporator, and a drain plate. The partition component and the air duct component define a first cavity, a first air inlet, a second air inlet, a first air outlet, and a second air outlet. The first air inlet, the first cavity, the first air outlet, and the first compartment are adapted to communicate with each other. The second air inlet, the first cavity, the second air outlet, and the second compartment are also adapted to communicate with each other. An evaporator and a drain plate are disposed inside the first cavity. The air duct component supports the drain plate, which is located below the evaporator. The angle between the evaporator and the horizontal plane is less than or equal to a preset angle, or the evaporator is parallel to the horizontal plane. The evaporator is horizontally placed inside the air duct assembly, and the downward tilt angle of the evaporator relative to the horizontal plane can be controlled within a preset angle, or the evaporator can be horizontally set. This reduces the height space occupied by the evaporator, thereby reducing the overall height of the air duct assembly and reducing the space occupied by the air duct assembly inside the cabinet. The storage space inside the cabinet can be increased accordingly, providing a large-capacity refrigeration equipment.

[0421] In some cases, the first compartment is located above the second compartment, with the first compartment being the refrigerator compartment and the second compartment being the freezer compartment.

[0422] The first air inlet is located on the left and right sides of the duct assembly and near the front of the duct assembly. The first air inlet communicates with the first compartment above the duct assembly. The second air inlet is located on the front of the duct assembly and communicates with the second compartment below the duct assembly.

[0423] The drainage plate can be one or more of the structures described above, as detailed above, and will not be repeated here. The drainage structure of the air duct assembly can be the drainage method described above, such as a first drainage component for side drainage, a second drainage component for rear drainage, or drainage through the water guide 223, or a combination of multiple drainage methods.

[0424] The air duct assembly also includes a fan 270, which is located on one side of the evaporator. The fan 270 can be installed horizontally or vertically, as detailed in the above description of the fan 270. The air duct assembly 200 also includes a fan shroud, a fan cover plate 243, and other structures used in conjunction with the fan, as also described above, and will not be repeated here.

[0425] The contents of the box liner, partition component 210, air duct component 220 and other structures are described above and will not be repeated here.

[0426] The above embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Although the invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the invention do not depart from the spirit and scope of the invention and should be covered within the scope of the claims of the invention.

Claims

1. A duct assembly, characterized in that, include: partition components; The air duct component is located below the partition component and forms a first cavity, an air inlet, and an air outlet that are connected to the partition component. An evaporator is disposed in the first cavity, and the angle between the evaporator and the horizontal direction is less than or equal to a preset angle, or the evaporator is parallel to the horizontal plane; A drain plate is disposed in the first cavity, located below the evaporator, and has an outlet and a water guide portion recessed relative to the top surface of the drain plate. The water guide portion is connected to the outlet, and the extension direction of the water guide portion forms a fourth angle with the direction from the air inlet to the air outlet, so as to prolong the time that the air stays in the air duct assembly and improve the heat exchange efficiency. A heating element is disposed on the surface of the drainage plate.

2. The air duct assembly according to claim 1, characterized in that, The heating element covers the lower surface of the drainage plate.

3. The air duct assembly according to claim 1, characterized in that, The water guiding part extends to both sides of the preset surface to the edge of the drainage plate, so that the edge of the drainage plate forms an opening, the opening being the outlet, and the opening communicating with the first drainage component.

4. The air duct assembly according to claim 3, characterized in that, The depth of the water guide recess increases in the direction closer to the opening.

5. The air duct assembly according to claim 3, characterized in that, The first drainage component is configured with the air inlet.

6. The air duct assembly according to claim 1, characterized in that, The drainage plate also includes a drainage section recessed relative to the top surface, the water guiding section is connected to the drainage section, the extension direction of the water guiding section and the extension direction of the drainage section form a fourth angle, and the drainage section forms the outlet.

7. The air duct assembly according to claim 6, characterized in that, The depth of the water guide recess gradually increases or remains constant in the direction closer to the drainage section.

8. The air duct assembly according to claim 7, characterized in that, Towards the direction of the drainage section, the bottom of the water guide section is inclined along a first direction, which forms a sixth angle with the top surface of the drainage plate, thereby increasing the depth of the recess in the water guide section.

9. The air duct assembly according to claim 6, characterized in that, The depth of the drainage section gradually increases towards the direction of the outlet.

10. The air duct assembly according to any one of claims 1 to 9, characterized in that, Multiple water guide sections are provided along the direction from the air inlet to the air outlet.

11. A refrigeration device, characterized in that, The cabinet includes a cabinet body and an air duct assembly as described in any one of claims 1 to 10, wherein the air duct assembly is disposed within the storage space of the cabinet body and divides it into a first compartment and a second compartment.

12. The refrigeration equipment according to claim 11, characterized in that, The air inlet includes a first air inlet and a second air inlet. The second air inlet is located on the front side of the air duct assembly and communicates with the second compartment. The first air inlet is located on at least one of the left and right sides of the air duct assembly and communicates with the first compartment.

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