Air duct assembly and refrigeration equipment

Abstract

The present application relates to the technical field of refrigeration equipment, and provides a wind channel assembly and a refrigeration equipment. The wind channel assembly comprises a partition plate component, a wind channel component and a fan cover. The wind channel component and the partition plate component define a first cavity, and a drain plate is arranged in the first cavity. The fan cover defines a second cavity, and comprises a first cover body and a second cover body. The first cover body is provided with a ventilation opening for communicating the first cavity and the second cavity. The first cover body is provided with a flow guide surface facing the fan. The first side of the flow guide surface is higher than the second side, and the first side and the second side are opposite sides. The fan is arranged in the second cavity. The rotating axis of the fan forms a first angle with the vertical direction. The inlet of the fan faces the ventilation opening. The present application provides a wind channel assembly. The rotating axis of the fan forms a first angle with the vertical direction, so as to reduce the space occupied by the fan in the height direction, thereby reducing the space occupied by the wind channel assembly in the height direction of the refrigeration equipment, and expanding the capacity of the refrigeration equipment.

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, if the evaporator is located at the rear of the refrigerator's cooling compartment, the cabinet's thickness is greater, resulting in insufficient storage space in the depth direction. If the evaporator is placed horizontally between two compartments, it doesn't occupy space at the rear of the cooling compartment. In this case, a fan can be installed behind the evaporator, allowing for air circulation and heat exchange within the compartment. However, this requires a larger vertical dimension, occupying significant vertical space and affecting the length and installation height of the drawers below, resulting in substantial volume loss within the refrigerator. Therefore, further optimization of the refrigerator's storage space is needed. 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, which is configured such that the rotation axis of the fan forms a first angle with the vertical direction, thereby reducing the space occupied by the fan in the height direction and reducing the size of the duct assembly in the height direction. This helps to reduce the space occupied by the duct assembly within the refrigeration equipment, thus expanding the capacity of the refrigeration equipment.

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

[0005] A duct assembly according to a first aspect of the present invention includes:

[0006] partition components;

[0007] The air duct component, together with the partition component, defines the first cavity;

[0008] A drainage board is disposed within the first cavity;

[0009] A fan cover includes a first cover and a second cover, the first cover and the second cover defining a second cavity, the first cover being located above the fan and having a ventilation opening to communicate the first cavity and the second cavity, the first cover being constructed with a guide surface facing the fan, the first side of the guide surface being higher than the second side, the first side and the second side being opposite sides;

[0010] A fan is located inside the second cavity, with the fan's rotation axis forming a first angle with the vertical direction, and the fan's inlet facing the ventilation opening.

[0011] According to an embodiment of the present invention, a duct assembly includes a partition component, a duct component, and a fan cover. The partition component and the duct component define a first cavity, and the fan cover defines a second cavity. The first cavity and the second cavity are connected by a vent. A fan in the second cavity draws air from the first cavity through the vent and then blows air out of the second cavity. The rotation axis of the fan forms a first angle with the vertical direction. While meeting drainage requirements, the rotation axis of the fan is kept as close to the vertical direction as possible; that is, the angle between the fan and the horizontal direction is kept as small as possible to reduce the space occupied by the fan in the vertical direction and reduce the height of the duct assembly. When the duct assembly is installed inside a refrigeration device, the space occupied by the duct assembly within the refrigeration device is reduced, which helps to increase the capacity of the refrigeration device. The first cover can collect water vapor above the fan and guide the collected water droplets from the first side to the second side. The first cover promotes the collection and discharge of water vapor in the second cavity, reduces water vapor corrosion to the fan, and extends the fan's lifespan.

[0012] According to one embodiment of the present invention, the rotation axis of the fan is collinear with the central axis of the vent.

[0013] According to one embodiment of the present invention, the first side is away from the drainage plate, and the first side is inclined upward at a second included angle relative to the second side;

[0014] Alternatively, the first side faces the drainage plate, and the second side is inclined downward at a third included angle relative to the first side.

[0015] According to one embodiment of the present invention, the upper end of the rotation axis of the fan is inclined forward to form a first included angle relative to the vertical direction, or inclined backward to form a first included angle.

[0016] According to one embodiment of the present invention, a drainage component is further included, the drainage component being in communication with a first outlet of the drainage plate; the first outlet is oriented toward the third side, the second cavity is located on a second side of the first cavity, and the third side is adjacent to the second side of the first cavity.

[0017] According to one embodiment of the present invention, the drainage component is provided with at least one air inlet.

[0018] According to one embodiment of the present invention, the drainage plate includes a water guiding portion, the water guiding portion being recessed relative to the top surface of the drainage plate, the extending direction of the water guiding portion forming a fourth angle with the air outlet direction above the drainage plate, the depth of the recess of the water guiding portion increasing along a predetermined direction facing the third side, and the end of the water guiding portion facing the third side forming the first outlet.

[0019] According to one embodiment of the present invention, the end of the second cover facing the drainage board is connected to the second outlet of the drainage board, and the fan is disposed above the second cover.

[0020] According to one embodiment of the present invention, the second cover is configured with a water guiding channel communicating with the second outlet, the edge of the water guiding channel protruding upward to form a baffle, and the fan is located on one side of the baffle.

[0021] According to one embodiment of the present invention, the water guide channel is inclined downward in a direction away from the second outlet.

[0022] According to one embodiment of the present invention, the drainage plate includes a drainage section and a water guiding section. The drainage section is configured with a second outlet and is recessed relative to the top surface of the drainage plate. The water guiding section communicates with the drainage section and is recessed relative to the top surface of the drainage plate. The extending direction of the water guiding section forms a fifth angle with the air outlet direction above the drainage plate.

[0023] According to one embodiment of the present invention, the depth of the water guide portion gradually increases in the direction toward the drainage portion.

[0024] According to one embodiment of the present invention, the upper surface of the second cover is inclined downward in a direction away from the drainage plate.

[0025] According to one embodiment of the present invention, the second cover is configured with a water collection part, the water collection part is located on the side of the second cover facing the drain outlet, the surface area of ​​the water collection part gradually decreases in the direction of the drain outlet and is connected to the drain outlet.

[0026] According to one embodiment of the present invention, the first included angle is greater than or equal to 7°.

[0027] According to an embodiment of the present invention, a refrigeration device includes a cabinet and an air duct assembly as described above, wherein the air duct assembly is disposed within the storage space of the cabinet and divides it into a first compartment and a second compartment.

[0028] According to the refrigeration equipment of the present invention, the duct assembly has a reduced dimension in the height direction, which facilitates the installation of drawers below the duct assembly to make full use of the space below the duct assembly, which helps to expand the capacity of the refrigeration equipment and provides a large-capacity refrigeration equipment.

[0029] The above-described one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0030] The air duct assembly of this invention includes a partition component, an air duct component, and a fan cover. The partition component and the air duct component define a first cavity, and the fan cover defines a second cavity. The first cavity and the second cavity are connected by a vent. A fan in the second cavity draws air from the first cavity through the vent and then blows air out of the second cavity. The rotation axis of the fan forms a first angle with the vertical direction. While meeting drainage requirements, the rotation axis of the fan is kept as close to the vertical direction as possible; that is, the angle between the fan and the horizontal direction is kept as small as possible to reduce the space occupied by the fan in the vertical direction and reduce the height of the air duct assembly. When the air duct assembly is installed inside a refrigeration device, the space occupied by the air duct assembly within the refrigeration device is reduced, which helps to increase the capacity of the refrigeration device.

[0031] Furthermore, in the refrigeration equipment of this embodiment, the duct assembly has a reduced dimension in the height direction, which facilitates the installation of drawers below the duct assembly to make full use of the space below the duct assembly, which helps to expand the capacity of the refrigeration equipment and provides a large-capacity refrigeration equipment.

[0032] 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

[0033] 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.

[0034] Figure 1 This is a schematic diagram of the structure of the refrigeration equipment provided in an embodiment of the present invention;

[0035] Figure 2 This is a partial structural schematic diagram of a refrigeration device provided in one embodiment of the present invention, in which the liner body is omitted;

[0036] Figure 3 yes Figure 2 A magnified schematic diagram of a portion of the structure at point A in the middle;

[0037] Figure 4 This is a cross-sectional view of a duct assembly provided in one embodiment of the present invention, with the cross-sectional section being a longitudinal section close to the fan.

[0038] Figure 5 This is a three-dimensional structural diagram of the installation state of the fan, drainage plate, and duct components of the air duct assembly provided in an embodiment of the present invention; wherein, in the direction away from the drainage plate, the surface of the first cover facing the fan is inclined upward;

[0039] Figure 6 This is an exploded structural diagram of the fan, drainage board, duct components, fan cover, and insulation structure of an air duct assembly provided in one embodiment of the present invention.

[0040] Figure 7 This is an exploded view of the air duct assembly provided in another embodiment of the present invention; wherein, drainage components are provided on the left and right sides of the air duct component, and the first cover is inclined downward toward the surface of the fan in the direction away from the drainage plate.

[0041] Figure 8 This is a top view schematic diagram of the installation state of the fan cover, drainage plate, duct components, and drainage components of the air duct assembly provided in the third embodiment of the present invention; and Figure 7 The difference lies in the location of the air vents;

[0042] Figure 9 yes Figure 8 Schematic diagram of the cross-sectional structure of section BB in the middle;

[0043] Figure 10 This is a side view of the air duct assembly provided in the third embodiment of the present invention;

[0044] Figure 11 This is a three-dimensional structural diagram of the drainage plate inside the air duct assembly provided in an embodiment of the present invention;

[0045] Figure 12 This is a top view of the drainage plate inside the air duct assembly provided in an embodiment of the present invention.

[0046] Figure 13 yes Figure 12 A schematic diagram of the cross-sectional structure of the C-C section;

[0047] Figure 14 yes Figure 12 Schematic diagram of the cross-sectional structure of DD.

[0048] Figure label:

[0049] 100. Drainage plate; 110. Drainage section; 111. First drainage section; 112. Second drainage section; 113. Second guide surface; 114. Second outlet; 120. Water guide section; 121. First guide surface; 122. First outlet; 130. First water guide zone; 140. Second water guide zone; 150. Flanged edge; 151. Positioning section;

[0050] 200. Air duct assembly; 210. Partition assembly; 211. First plate; 212. Second plate; 213. First insulation layer; 214. Third plate; 220. Air duct assembly; 221. Second insulation layer; 222. First support; 2221. Second air inlet; 224. Third insulation layer; 225. Second support; 226. Heating element; 230. Evaporator;

[0051] 250. Fan cover; 251. Ventilation opening; 252. First exhaust vent; 253. Second exhaust vent; 254. First enclosure; 2541. Guide surface; 255. Second enclosure; 2551. Water channel; 2552. Baffle; 2553. First drain outlet; 2554. First air guide section; 2555. Second air guide section; 2556. Mounting column; 2557. Partition plate; 2558. Water collection section; 260. Drainage component; 261. First air inlet; 262. Second drain outlet; 270. Fan; 271. Fan base; 280. Second cavity; 290. First cavity;

[0052] 400. Cabinet; 410. First room; 420. Second room;

[0053] α1, the first included angle;

[0054] θ2, the sixth included angle; θ3, the seventh included angle. Detailed Implementation

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] Embodiments of the present invention, in conjunction with Figures 1 to 14 As shown, a refrigeration device is provided, including a cabinet 400, which includes a cabinet liner.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] The number of air duct components 200 installed within the refrigeration equipment can be adjusted as needed. It is understood that, for example... Figures 2 to 9 As 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 290, an air inlet suitable for communicating with the first cavity 290, and a ventilation port suitable for communicating with the first cavity 290. The evaporator 230 and the drain plate 100 are arranged inside the first cavity 290. The drain plate 100 is located below the evaporator 230 and is used to collect the defrosting water of the evaporator 230.

[0069] like Figure 1 and Figure 2As 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 290 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 heater to meet the heat exchange requirements of the first chamber 410 and the second chamber 420.

[0070] The partition component 210 can be fixedly connected to the container body, such as by welding, snap-fitting, or fasteners. Figure 7 As shown, the partition component 210 includes a first plate 211 and a second plate 212. A first insulation layer 213 is provided on the first plate 211 and the second plate 212. The first insulation layer 213 may be detachably disposed between the first plate 211 and the second plate 212, or the first insulation layer 213 may be integrally foamed with the first plate 211 and the second plate 212.

[0071] 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.

[0072] like Figure 7 As shown, the partition component 210 also includes a third plate 214, which, 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, interactive modules, and display modules.

[0073] The air inlet, first cavity 290, and vent of the air duct assembly 200 are connected to allow the air entering the air duct assembly 200 to be discharged after heat exchange. The air inlet of the air duct assembly 200 is divided into a first air inlet and a second air inlet. The air duct assembly 200 is also provided with a first exhaust vent 252 and a second exhaust vent 253. The first air inlet, first cavity 290, vent, and first exhaust vent 252 are connected to the first compartment to form a first circulation path. The second air inlet, first cavity 290, vent, and second exhaust vent 253 are connected to the second compartment to form a second circulation path. At least one of the first circulation path and the second circulation path is connected to allow air to be supplied to the first compartment 410 and the second compartment 420. The number and position of the first air inlet, second air inlet, first exhaust vent 252, and second exhaust vent 253 are not limited.

[0074] like Figure 1 and Figure 2 As 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. The air duct assembly 200 is provided with a first air outlet 252 facing upwards and a second air outlet 253 facing downwards. A first damper is provided at the first air outlet 252 for opening and closing adjustment, and a second damper is provided at the second air outlet 253 for opening and closing adjustment. The air duct assembly 200 has a first air inlet and a second air inlet near the front end. The first air inlet 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. The second air inlet is connected to the freezer compartment and is located on the front or lower side of the air duct assembly.

[0075] like Figures 2 to 10 As shown, the air duct assembly 200 also includes a fan cover 250, which includes a first cover 254 and a second cover 255. The first cover 254 is constructed with a guide surface 2541 facing the fan. The first side of the guide surface 2541 is higher than the second side, and the first side and the second side are opposite sides. The fan cover 250 restricts the second cavity 280. A fan 270 is arranged in the second cavity 280. The rotation axis of the fan 270 forms a first angle α1 with the vertical direction. The first cover 254 has a ventilation opening 251. The inlet of the fan 270 faces the ventilation opening 251. The second cavity 280 is connected to the air outlet area of ​​the first cavity 290 through the ventilation opening 251. The second cavity 280 is connected to the exhaust port of the air duct assembly 200. The air in the first chamber 290 is drawn into the second chamber 280 by the fan 270 through the vent 251 on the fan cover 250. Under the action of the fan 270, the air in the second chamber 280 is vented into the first compartment 410 or the second compartment 420 through the exhaust port. That is, the second chamber 280 and the aforementioned first exhaust port 252 and second exhaust port 253 can be adjusted to open and close.

[0076] 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 fan 270's rotation axis should be as large as possible. In other words, the fan 270 should be positioned 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. The first cover 254 serves to collect water vapor above the fan 270 and guide the collected water droplets from the first side to the second side. The first cover 254 promotes the collection and discharge of water vapor within the second cavity 280, reducing water vapor corrosion of the fan 270 and extending its lifespan.

[0077] At this time, the vent 251 and the drain outlet of the first cavity 290 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 290, and improve the heat exchange efficiency.

[0078] The fan cover 250 is fixed to the main body of the box, and the air in the first cavity 290 is discharged by the fan 270 through the second cavity 280.

[0079] Wherein, the first included angle α1 is greater than or equal to 7°, allowing water collected on the first side of the first cover 254 to flow along the slope of its own surface to the second side, and guiding the water along the air duct component 220 below the fan 270 to the first drain outlet 2553, preventing water collected on the surface of the first cover 254 from dripping into the fan 270, and minimizing water falling into the fan 270. Wherein, the first side is higher than the second side, and the surface of the first cover 254 facing the fan 270 can be an inclined plane or a curved surface; when the surface of the first cover 254 facing the fan 270 is a plane, it helps to simplify the structure of the first cover 254 and facilitates processing. In addition, the water collected on the surface of the fan 270 falls and is discharged under the action of gravity.

[0080] 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.

[0081] 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 254 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 250 needs to be solved.

[0082] In some cases, the first cavity 290 and the second cavity 280 are two cavities arranged side by side; or, the second cavity 280 is located inside the first cavity 290, that is, the second cavity 280 is surrounded by the first cavity 290; the positional relationship between the first cavity 290 and the second cavity 280 is not limited to this, as long as the two cavities are connected. Taking the second cavity 280 being located behind the first cavity 290 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 4 As shown, the fan 270 is tilted forward at a first included angle α1, for reference. Figure 9 As shown, the fan 270 is tilted backward at a first included angle α1. That is, the upper end of the fan's rotation axis 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.

[0083] In this design, the fan 270 gradually slopes upwards from front to back, meaning its inlet faces the air outlet of the first cavity 290. This facilitates airflow from the first cavity 290 into the fan 270 inlet, improving ventilation. The fan 270 also gradually slopes downwards 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 9 and 10 As shown, the evaporator 230 drains out from the drain components 260 on the left and right sides and the drain outlet at the rear end.

[0084] Understandably, the rotation axis of the fan 270 is collinear with the central axis of the vent 251. During the process of drawing air from the first chamber 290 into the second chamber 280 through the vent 251, 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 251 is adapted to the shape of the fan 270's inlet so that air from the first chamber 290 is drawn into the second chamber 280 by the fan 270 through the vent 251.

[0085] The rotation axis of the fan 270 is collinear with the central axis of the vent 251. Generally, the lower surface of the first enclosure 254 is set parallel to the fan 270, or the area of ​​the first enclosure 254 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.

[0086] It is understandable that, such as Figures 4 to 6 As shown, the first cover 254 is located above the fan 270, with its first side facing away from the drain plate 100 and its second side facing the drain plate 100. The first side is inclined upward at a second included angle relative to the second side, i.e., in a direction away from the drain plate 100. The air guiding surface 2541 of the first cover 254 is inclined upward at a second included angle α2, meaning that the vent 251 faces the air outlet direction of the first cavity 290. This helps the air in the first cavity 290 enter the second cavity 280, improving the ventilation effect. Furthermore, the evaporator 230 and the fan 270 can share a drainage structure to simplify the structure. Figures 3 to 5 As shown, the air duct assembly 200 drains water from the first drain outlet 2553 at the rear end.

[0087] Combination Figures 4 to 6 as well as Figures 11 to 14As shown, when the drainage plate 100 includes a water guiding section 120 and a drainage section 110, and the drainage section 110 is configured with a second outlet 114, the water collected by the drainage plate 100 flows along the water guiding section 120 to the drainage section 110 and is discharged from the second outlet 114. Simultaneously, some air also flows along the water guiding section 120 and the drainage section 110 to the second outlet 114. By misaligning the second outlet 114 with the vent 251, the air flowing towards the second outlet 114 can be prevented from being directly discharged from the vent 251, thus maximizing the heat exchange time within the first cavity 290 and improving heat exchange efficiency. Specifically, when the second cavity 280 is located behind the first cavity 290, the direction away from the drainage plate 100 is the front-to-back direction. Of course, the first cavity 290 and the second cavity 280 can also be arranged side-by-side, 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 further here. Figures 4 to 10 As shown, the example is that the second cavity 280 is located behind the first cavity 290.

[0088] refer to Figures 7 to 10 As shown, the first cover 254 is located above the fan 270, with the first side facing the drain plate 100 and the second side facing away from the drain plate 100. The second side is inclined downward at a third included angle α3 relative to the first side, that is, in the direction away from the drain plate 100. The guide surface 2541 of the first cover 254 is inclined downward at a third included angle α3. The first cover 254 guides the water flow to the rear of the fan 270, which helps the collected water to be discharged quickly.

[0089] In some cases, the second and third included angles 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 251, ensuring the airflow effect within the duct assembly 200 and the air circulation effect within the refrigeration equipment.

[0090] The technical solution for drainage of the duct component 200 is explained below.

[0091] The air duct component 220 can be fixed to the liner body by being fixedly connected to the partition component 210, or the air duct component 220 can be directly fixedly connected to the liner body. The air duct component 220 supports the drain plate 100, which is located below the evaporator 230. A second cover 255 is provided on the outlet side of the drain plate 100, and the second cover 255 is provided with a first drain outlet 2553. Water discharged from the second outlet 114 of the drain plate 100 is guided along the second cover 255 to the first drain outlet 2553. At this time, the outlet of the drain plate 100 faces rearward, and the second cover 255 is located behind the drain plate 100. Providing the second cover 255 can provide a rear drainage structure.

[0092] The air duct component 220 includes a first support portion 222 and a second support portion 225 inclined downwards along the first support portion 222. The first support portion 222 supports the second insulation layer 221. A drainage plate 100 is disposed above 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. A third insulation layer 224 is disposed above the second support portion 225, and a second cover 255 is disposed above the third insulation layer 224. The second support portion 225 serves to support the third insulation layer 224 and the fan cover 250.

[0093] 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.

[0094] 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 second cover 255 and the drainage plate 100 are two independent parts; of course, the second cover 255 and the drainage plate 100 can also be formed into an integral structure.

[0095] Understandably, reference Figures 4 to 6 As shown, a second cover 255 is provided on the side where the second outlet 114 of the drainage plate 100 is located. The end of the second cover 255 facing the drainage plate 100 is connected to the second outlet 114 of the drainage plate 100. The fan 270 is located above the second cover 255. The second cover 255 can receive water discharged from the drainage plate 100, water dripping from the first cover 254, and water dripping from the fan 270, and discharge defrosting water from the first cavity 290 and the second cavity 280, which helps to simplify the structure of the air duct assembly 200. At this time, the drainage plate 100 can adopt Figures 4 to 6 as well as Figures 11 to 14 The structure shown can be specifically referred to in the following embodiment of the drainage board 100.

[0096] It should be noted that a partition plate 2557 is provided between the drainage plate 100 and the second cover 255. The partition plate 2557 ensures that the drainage plate 100 and the second cover 255 are connected only at the second outlet 114, while other parts are separated by the partition plate 2557. This ensures that the first cavity 290 and the second cavity 280 are connected at the vent 251 and the outlet, while other parts are separated. The partition plate 2557 can be integrally formed with the second cover 255 or detachably connected.

[0097] It is understandable that, such as Figure 5 and Figure 6 As shown, the second cover 255 is constructed with a water guiding channel 2551 that communicates with the outlet of the drainage plate 100. The edge of the water guiding channel 2551 protrudes upward to form a baffle 2552. The fan 270 is located on one side of the baffle 2552. The baffle 2552 serves to separate water from the fan, prevent water from flowing to the fan, and reduce the impact of water on the fan.

[0098] The partition 2552 can be a plate-like structure or a block-like structure that protrudes upward from the second cover 255, and the specific choice can be made according to the needs. Of course, the partition 2552 can also be a part that can be detachably connected to the second cover 255, such as a plate structure that is plugged into or snapped into the second cover 255. The structure of the partition 2552 is not limited to this, and other structures that can realize the partition function can also be used.

[0099] refer to Figure 5 and Figure 6 As shown, the water channel 2551 slopes downward in the direction away from the second outlet 114 of the drainage plate 100 so that water can be discharged by gravity.

[0100] Of course, the water guide channel 2551 can also be set horizontally, which will not increase the height dimension of the air duct assembly 200, thus helping to reduce the height of the air duct assembly 200 and thereby increase the storage space of the refrigeration equipment.

[0101] The second cover 255 is provided with a first air guide 2554 and a second air guide 2555. The first air guide 2554 and the second air guide 2555 cooperate with the fan 270 to guide air to the first exhaust port 252 and the second exhaust port 253, ensuring that the air flows out from the corresponding path.

[0102] The fan 270 is mounted on the upper surface of the second cover 255 via the fan base 271. Multiple mounting posts 2556 are provided on the upper surface of the second cover 255. The fan base 271 is fixed on the mounting posts 2556. The tilt angle and direction of the fan 270 can be adjusted by adjusting the height of the mounting posts 2556 at different positions. The structure is simple.

[0103] The upper surface of the second cover 255 is inclined downward in the direction away from the drain plate 100, that is, towards the first drain outlet 2553, so that the defrosting water on the surface of the second cover 255 can flow towards the first drain outlet 2553 under the action of gravity.

[0104] The second cover 255 is equipped with a water collection section 2558, which is located on the side of the second cover 255 facing the first drain outlet 2553. The surface area of ​​the water collection section 2558 gradually decreases towards the first drain outlet 2553 and is connected to the first drain outlet 2553. The water collected by the water collection section 2558 can be discharged through the first drain outlet 2553. The gradual decrease in surface area of ​​the water collection section 2558 towards the first drain outlet 2553, that is, the water collection section 2558 converging towards the first drain outlet 2553, facilitates the collection and discharge of defrosting water received by the second cover 255.

[0105] Since the upper surface of the second cover 255 is inclined downward toward the first drain outlet 2553, the water collection part 2558 can also be inclined downward, which will improve the drainage effect. However, the water collection part 2558 is not limited to being inclined downward, and the possibility of the water collection part being set horizontally cannot be ruled out.

[0106] The second cover 255 is provided with a heating element 226, which heats the second cover 255 to defrost the fan cover 250 and the fan 270 and other components inside it. The heating element 226 can be a heating film formed on the second cover 255, or it can be a heating plate located below the second cover 255. The structure of the heating element 226 is not limited to these; other structures capable of achieving defrosting can also be used.

[0107] Unlike the above embodiments, the duct assembly 200 may also be provided with a side drainage structure, which is provided on at least one of the left and right sides of the duct assembly 200. 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 through the side drainage structure, and the water that condenses upon encountering the fan 270 can be discharged through the structure below the fan 270. The structure below the fan 270 may be the aforementioned rear drainage structure, or other structures capable of draining water from the second cavity 280.

[0108] like Figures 7 to 9 As shown, the air duct assembly 200 also includes a drainage component 260, which is connected to the first outlet 122 of the drainage plate 100 in the first cavity 290. The drainage component 260 and the fan 270 are located on adjacent sides of the drainage plate 100. The drainage component 260 can be understood as a side drainage structure.

[0109] The drainage component 260 is provided with a second drain outlet 262, which is connected to the drainage pipe to discharge the water collected by the drainage plate 100.

[0110] like Figures 7 to 10As shown, the first outlet 122 of the drain plate 100 faces the third side of the first cavity 290, and the second cavity 280 is located on the fourth side of the first cavity 290, with the third and fourth sides adjacent to each other. The third side can be understood as at least one of the left and right sides, and the fourth side can be understood as the rear side. The water outlet direction of the drain plate 100 is different from the air outlet direction of the first cavity 290, which can reduce the water vapor carried in the wind, reduce the impact of drainage on the fan 270, and reduce the amount of frost on the fan 270. At this time, the first outlet 122 of the drain plate 100 faces at least one of the left and right sides.

[0111] It is understood that the drainage component 260 is provided with at least one air inlet, that is, the drainage component 260 is provided with at least one of the first air inlet 261 and the second air inlet. For example... Figure 10 As shown, taking the drainage component 260 with a first air inlet 261 as an example, the first air inlet 261 passes through the interior of the drainage component 260 and communicates with the first cavity 290 to realize the return air of the first chamber 410. The first air inlet 261 is connected to the first chamber 410 through a return air duct to facilitate the return air.

[0112] In some cases, when the partition component is installed above the air duct component, the partition component can cover a portion of the drainage component. The partition component has a partition air inlet, which is connected to the first air inlet, so that the return air duct of the first compartment enters the first cavity 290 through the partition air inlet, the first air inlet, and the internal space of the drainage component.

[0113] like Figures 7 to 9 As shown, the drainage plate 100 includes a water guiding portion 120, which is recessed relative to the top surface of the drainage plate. The extending direction of the water guiding portion 120 forms a fourth angle with the air outlet direction above the drainage plate 100. The depth of the recess in the water guiding portion 120 increases along the direction of the preset face towards the third side. A first outlet 122 is constructed at the end of the water guiding portion 120 facing the third side. Water collected by the water guiding portion 120 is discharged from the first outlet 122 along the extending direction of the water guiding portion. The first outlet 122 is connected to the aforementioned drainage component 260, allowing water to be discharged through the second 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 290 through the first air inlet 261. The air enters the first cavity 290 from the left or right side and can flow along the water guide section 120. The return air from the second chamber 420 enters the first cavity 290 through the second air inlet 2221. The air enters the first cavity 290 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 290 through 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.

[0114] At this time, the air outlet direction above the drainage plate 100 is from front to back, and the extension direction of the water guide 120 is from left to right. Therefore, the fourth included angle is 90°. The water guide 120 can reduce the flow speed of the air in the first cavity 290, prolong the time the air stays in the first cavity 290, and optimize the heat exchange effect.

[0115] It should be noted that the drainage plate 100 includes a water guiding section 120 extending to the left from a preset position and a water guiding section 120 extending to the right from a preset position. The drainage plate 100 has a first outlet 122 facing the left and right sides. Drainage components 260 are provided on both the left and right sides of the air duct assembly 200. The structure is simple and the water guiding effect is good. The preset position can be the symmetrical plane of the drainage plate 100, or a longitudinal plane extending in the front-back direction.

[0116] The following describes the components inside the first cavity 290, such as the evaporator and heater.

[0117] The angle formed by 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 increasing the capacity of the refrigeration equipment. The angle formed by the evaporator 230 and the horizontal direction can be understood as the larger surface area of ​​the evaporator 230 facing upwards and downwards, and the evaporator 230 being arranged laterally within the first cavity 290.

[0118] 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.

[0119] It is understandable that the preset angle can reach 0°, that is, the evaporator 230 can be installed horizontally above the drain plate 100, that is, the bottom surface of the evaporator 230 is parallel to the horizontal plane. Compared with the case where the evaporator 230 is set at an angle, the height of the installation space required for the horizontally set evaporator 230 is reduced, and the height dimension of the air duct assembly 200 can be reduced accordingly. As a result, the space occupied by the air duct assembly 200 in the cabinet body is reduced. Under the condition that the external dimensions of the cabinet body remain unchanged, the capacity of the cabinet body can be effectively increased, so as to provide a large-capacity refrigeration equipment.

[0120] 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.

[0121] It is understandable that the top surface of the drain plate 100 is flat and parallel to the horizontal plane. That is, 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 and the top surface of the drain plate 100 are parallel or in contact. The gap between the evaporator 230 and the drain plate 100 is reduced, which can prevent the air in the first cavity 290 from flowing directly to the vent 251 through the gap between the evaporator 230 and the drain plate 100, which helps the air to fully exchange heat in the first cavity 290.

[0122] It should be noted that minimizing the gap between the evaporator 230 and the drain plate 100 slows down the speed at which air flows from the gap between the evaporator 230 and the drain plate 100 to the vent 251, and prolongs the time the air stays in the first cavity 290, so that the air can fully exchange heat with the evaporator 230 in the first cavity 290 before flowing out, thus ensuring heat exchange efficiency.

[0123] In some cases, a heater is installed above the drain plate 100, that is, the heater is located between the drain plate 100 and the evaporator 230. When the evaporator 230 needs to defrost, the heater is turned on, and the heat generated by the heater is used to heat the frost adhering to the surface of the evaporator 230.

[0124] Of course, the heater is not limited to being positioned between the drain plate 100 and the evaporator 230. In this case, the heater can be configured as a heating film attached to the lower surface of the drain plate 100; alternatively, the heater can be positioned between the heat exchange tubes of the evaporator 230. For example, the heater may include multiple straight-inserted heating rods inserted between two layers of heat exchange tubes. In this case, the heat exchange efficiency between the heating rods and the heat exchange tubes, as well as the fins on the heat exchange tubes, is higher, and the defrosting efficiency can also be improved. When the heater is not positioned 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.

[0125] 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 290.

[0126] Below, in conjunction with Figures 4 to 6 as well as Figures 11 to 14 As 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.

[0127] Embodiments of the present invention, in conjunction with Figures 11 to 14 As shown, a drainage plate 100 is provided. The drainage plate 100 is configured with a drainage section 110 and a water guiding section 120. The drainage section 110 is configured with a second outlet 114. The drainage section 110 is recessed relative to the top surface of the drainage plate 100. The water guiding section 120 is connected to the drainage section 110. The water guiding section 120 is recessed relative to the top surface of the drainage plate 100. The extending direction of the water guiding section 120 forms a fifth angle θ1 with the air outlet direction above the drainage plate 100. The depth of the recess of the water guiding section 120 increases in the direction closer to the drainage section 110.

[0128] 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. Water falls into the water guide section 120 and extends along its direction into the drain section 110. Multiple water guide sections 120 are typically provided, and the water collected by each section 120 converges into the drain section 110 and is discharged through the second outlet 114 of the drain section 110. The water guide section 120 increases in depth towards the drain section 110, allowing water to flow towards the drain section 110 under gravity and exit through the second outlet 114.

[0129] When the aforementioned drain plate 100 and evaporator 230 are both installed within the air duct assembly 200, air enters the first cavity 290 from the air inlet of the air duct assembly 200 and flows towards the vent. The air within the first cavity 290 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 120 forms a fifth angle θ1 with the air outlet direction, which can prevent the air from flowing directly from the water guide 120 to the vent, thereby prolonging the time the air stays in the first cavity 290. This allows the air to fully contact the evaporator 230 and exchange heat, and the air after heat exchange is then discharged from the vent, which helps to improve heat exchange efficiency.

[0130] The air outlet direction is from the air inlet to the vent. In some cases, only one air inlet and one vent 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 vents is provided with multiple outlets, creating multiple air outlet directions. The extension direction of the water guide 120 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 120 forms an angle with all air outlet directions, it can ensure that the air in multiple flow paths can effectively exchange heat, thus guaranteeing heat exchange efficiency.

[0131] When the air inlet is divided into a first air inlet 261 and a second air inlet 2221, with the second air inlet 2221 located in front of the air duct assembly 200 and the vent located behind the air duct assembly 200, the connecting path between the second air inlet 2221 and the vent forms a first air outlet direction. The second air inlet 2221 corresponds to a lower position on the evaporator 230, so the air flows from bottom to top and from front to back. In this embodiment, the extension direction of the water guide portion 120 of the drain plate 100 forms an angle with the first air outlet direction, that is, the extension direction of the water guide portion 120 forms an angle with the front-to-back direction. The first air inlet 261 can be located on at least one of the left and right sides of the air duct assembly 200, and the connecting path between the first air inlet 261 and the vent forms a second air outlet direction. The extension direction of the water guide portion 120 also forms an angle with the second air outlet direction. The angle formed by the extension direction of the water guide 120 and the first air outlet direction, and the angle formed by the extension direction of the water guide 120 and the second air outlet direction, can both be understood as the fifth angle θ1.

[0132] The extension direction of the water guide 120 can be a straight path or a curved path. When the extension path of the water guide 120 is a straight path, the path from the end of the water guide 120 away from the drain 110 to the other end of the water guide 120 connecting to the drain 110 is the extension path. When the extension path of the water guide 120 is a curved path, the curved path water guide 120 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 a curve with one or more radii of curvature. The shape of the curved path can be set as needed. The extension direction of a water guide 120 can form one or more angles with the air outlet direction, that is, the fifth included angle θ1 can be one or more angle values, which can be set as needed. The fifth included angle θ1 is not marked in the figure, but the figure illustrates the case where the fifth included angle is 90°.

[0133] It should be noted that both the water guiding part 120 and the drainage part 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 part 120 and the bottom of the drainage part 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.

[0134] In this embodiment, the drainage plate 100, with its water guiding part 120 cooperating with the drainage part 110, can discharge the collected water, solving the drainage problem inside the air duct assembly 200. Furthermore, by setting the water guiding part 120 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 inside 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 requirements of the refrigeration equipment. In addition, the structure of the drainage plate 100 is simple.

[0135] It is understandable that, towards the direction of the drain section 110, the bottom of the 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 water guiding section 120 is inclined, and the water in the 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.

[0136] 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 water guiding section 120 gradually recesses 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 water guiding section 120 and the horizontal plane, and the first direction is a downward-sloping direction.

[0137] The bottom of the water guiding part 120 can be a slope or a slope. In some cases, the bottom of the water guiding part 120 is a slope. The slope can be a plane or a curved surface, which can be selected according to the needs.

[0138] In some cases, the bottom of the water guiding section 120 may not form a continuous slope or slope, such as a stepped shape, but it can still meet the water guiding requirements.

[0139] 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.

[0140] In some cases, the sixth included angle θ2 is set to 3°. 3° can meet the drainage requirements of the drainage board 100 and can also significantly reduce the height of the drainage board 100 to achieve drainage at a small angle.

[0141] It is understandable that the bottom surfaces of the drainage plates 100 corresponding to the multiple water guide sections 120 arranged side by side on the same side of the drainage section 110 are coplanar, which makes the bottom surface of the drainage plate 100 more flat, the appearance of the drainage plate 100 simple, and convenient for positioning and installation.

[0142] The parallel arrangement here can be understood as multiple water guides 120 arranged sequentially on one side of the extension direction of the drainage section 110. Generally, multiple water guides 120 are arranged in parallel on both sides of the drainage section 110, that is, the drainage section 110 is positioned between two rows of water guides 120. Of course, when the drainage section 110 is located at the end of the drainage plate 100, the water guides 120 are only located on one side of the drainage section 110.

[0143] Understandably, the extension direction of the water guide section 120 is perpendicular to the air outlet direction, which can effectively prevent the air from being discharged from the space restricted by the water guide section 120, and effectively prolong the time that the air stays in the first cavity 290, so as to fully exchange heat.

[0144] Understandably, the depth of the recess in the drainage section 110 increases towards the direction of the second outlet 114, so that the water in the drainage section 110 flows to the second outlet 114 under the action of gravity.

[0145] 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 second outlet 114 and is discharged. The drainage effect is good, which can avoid the problem of local water accumulation; and the water can flow smoothly.

[0146] 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 second 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.

[0147] 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.

[0148] 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.

[0149] 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.

[0150] 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.

[0151] 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 290, thus ensuring the heat exchange effect.

[0152] Of course, the drainage section 110 can also extend along the air outlet direction, and water guiding sections 120 can be symmetrically arranged on both sides of the drainage section 110 to facilitate uniform and stable water guiding by the water guiding sections 120 on both sides of the drainage section 110.

[0153] like Figure 10 and Figure 14 As shown, when the drainage section 110 extends along the air outlet direction, the water guide section 120 is perpendicular to the air outlet direction, so as to minimize the amount of air entering the water guide section 120.

[0154] It is understandable that, such as Figure 12 and Figure 13 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 120. 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 120 so that the water in the water guiding section 120 can converge into the drainage section 110 and prevent water accumulation in the water guiding section 120.

[0155] It is understandable that, such as Figure 10 , Figure 11 as well as Figure 14 As shown, multiple parallel water guides 120 are provided on both sides of the drainage section 110. These multiple water guides 120 direct water from different locations into the drainage section 110. By providing multiple water guides 120, 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 second outlet 114 as quickly as possible along the water guides 120 and the drainage section 110.

[0156] It is understandable that, such as Figure 10 and Figure 11 As shown, at least two drainage sections 110 are provided. Two or more drainage sections 110 have two or more second outlets 114, enabling drainage from multiple locations and facilitating the rapid discharge of water from the drainage plate 100. With the drainage plate area remaining constant, increasing the number of drainage sections 110 can shorten the length of the water guiding section 120, allowing water to enter the drainage section 110 more quickly.

[0157] 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, a first water-guiding area 130 located on one side of the first drainage section 111 and a second water-guiding area 140 located on one side of the second drainage section 112 are constructed. The depth of the water-guiding portion 120 in the first water-guiding area 130 increases towards the first drainage section 111, and the depth of the water-guiding portion 120 in the second water-guiding area 140 increases towards the second drainage section 112. That is, at the junction of the first water-guiding area 130 and the second water-guiding area 140, the depth of the water-guiding portion 120 is the smallest, which facilitates the flow of water collected by the first water-guiding area 130 into the first drainage section 111 and the flow of water collected by the second water-guiding area 140 into the second drainage section 112, shortening the length of the water-guiding portion 120 and facilitating water collection in the drainage section 110.

[0158] Of course, such as Figure 14 As shown, another drainage section 110 can also be provided. In this case, the second outlet 114 of the drainage section 110 should be avoided as much as possible from the ventilation opening. Multiple parallel water guiding sections 120 are provided on both sides of the drainage section 110, which helps to shorten the water guiding path of the water guiding section 120 and speed up water discharge.

[0159] like Figure 5 as well as Figures 11 to 13 As shown, the drain section 110 extends from front to back, with its opening located at the rear end of the drain plate 100. The water guide section 120 extends in the left-right direction, and the left and right sides of the drain section 110 form a wave-shaped structure. The wave-shaped structure facilitates water collection and discharge, thus eliminating the need for the evaporator 230 to be tilted in the front-back direction. The water guide section 120 forms an angle of less than 7° with the top surface of the drain plate 100. In other words, the drain plate 100 has a tilted water guide section 120 extending in the left-right direction, and the tilt angle of the water guide section 120 does not affect the angle of the drain plate 100 in the front-back direction. The drainage section 110 extends from front to back, forming a seventh angle θ3 with the horizontal plane. The seventh angle θ3 affects the height change of the drainage board 100 in the front-back direction. 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 of the drainage board 100 is small. The local position of the drainage board 100 has a slightly larger inclination angle, which has little impact on the overall storage space in the room and can also optimize the volume of the room.

[0160] Understandably, reference Figure 13 As shown, the water guiding section 120 includes a first guiding surface 121 provided along the extending direction of the 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 water guiding section 120 narrows from top to bottom, so that the water falling on the first guiding surface 121 and the top surface can be collected at the bottom of the water guiding section 120 and then collected along the water guiding section 120 to the drainage section 110.

[0161] At least one of the two side surfaces of the water guiding section 120 along its extending direction is configured as a first guiding surface 121. The longitudinal cross-sectional shape of the water guiding section 120 may be an inverted triangle or an inverted trapezoid. (See reference) Figure 13 As shown, both sides of the water guiding section 120 in the extension direction are first guiding surfaces 121, and water can be guided on both sides of the water guiding section 120.

[0162] Understandably, reference Figure 12 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 second outlet 114.

[0163] 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 12 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.

[0164] like Figure 12 and Figure 13 As shown, the 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 second outlet 114 as soon as possible.

[0165] 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.

[0166] It is understandable that the width of the water guide 120 gradually decreases in the direction of the first preset cross section extending towards the drainage section 110. It can also be understood that the water guide 120 is in a gradually converging state towards the drainage section 110, so that the water in the water guide 120 gathers and helps the water in the water guide 120 enter the drainage section 110.

[0167] The first preset cross-section here can be understood as a cross-section parallel to the top surface of the drainage plate 100, 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 extension direction of the water guiding section 120, that is, the distance between the two first guiding surfaces 121. Gradual reduction is generally a continuous reduction, but step reduction is not excluded.

[0168] Understandably, the width of the second preset section of the drain section 110 increases towards the second outlet 114. Defrosting water collected by multiple water guides converges into the drain section 110, with the largest water volume at the second outlet 114. The increased width of the drain section 110 provides more drainage space, facilitating stable water discharge.

[0169] The second preset section here can be understood as a section parallel to the top surface of the drainage plate 100, a horizontal section of the drainage plate 100 in its installed state. The width of the drainage section 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.

[0170] The first preset section and the second preset section are parallel or coplanar.

[0171] It is understandable that, such as Figure 10 As 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 an opening at the position corresponding to the second 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 second outlet 114, thereby ensuring that all water in the air duct assembly 200 is discharged from the drain outlet.

[0172] A local portion of the flange 150 extends upward to form a positioning part 151. Two adjacent positioning parts 151 are used to limit the heater above the drainage plate 100. The heater is fixed in a simple way, and the structure of the drainage plate 100 is simple.

[0173] In the above embodiments, the 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 shape of the drain plate 100 can be rectangular, trapezoidal, circular, or other shapes. The upper surface and the lower surface of the drain plate 100 have the same shape.

[0174] 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.

[0175] 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.

[0176] When the drainage plate 100 in the above embodiments is applied to the above-mentioned air duct assembly 200, box liner and refrigeration equipment, the above-mentioned air duct assembly 200, box liner and refrigeration equipment have the beneficial effects of the above-mentioned drainage plate 100.

[0177] 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, together with the partition component, defines the first cavity; A drainage board is disposed within the first cavity; A fan cover includes a first cover and a second cover, the first cover and the second cover defining a second cavity, the first cover being located above the fan and having a ventilation opening to allow the first cavity to communicate with the second cavity, the first cover being constructed with a guide surface facing the fan, a first side of the guide surface being higher than the second side, the first side and the second side being opposite sides; A fan is disposed in the second cavity, the rotation axis of the fan forms a first angle with the vertical direction, and the inlet of the fan faces the ventilation opening; The first side is away from the drainage plate, and the first side is inclined upward at a second included angle relative to the second side; Alternatively, the first side faces the drainage plate, and the second side is inclined downward at a third included angle relative to the first side.

2. The air duct assembly according to claim 1, characterized in that, The rotation axis of the fan is collinear with the central axis of the vent.

3. The air duct assembly according to claim 1, characterized in that, The upper end of the rotation axis of the fan is inclined forward to form a first included angle relative to the vertical direction, or inclined backward to form a first included angle.

4. The air duct assembly according to claim 1, characterized in that, It also includes a drainage component, which is connected to a first outlet of the drainage plate; the first outlet faces a third side of the first cavity, and the second cavity is located on a fourth side of the first cavity, with the third side adjacent to the fourth side.

5. The air duct assembly according to claim 4, characterized in that, The drainage component is provided with at least one air inlet.

6. The air duct assembly according to claim 4, characterized in that, The drainage plate includes a water guide portion, which is recessed relative to the top surface of the drainage plate. The extension direction of the water guide portion forms a fourth angle with the air outlet direction above the drainage plate. The depth of the recess of the water guide portion increases along the direction of the preset face towards the third side. The end of the water guide portion facing the third side forms the first outlet.

7. The air duct assembly according to any one of claims 1 to 6, characterized in that, The end of the second cover facing the drainage board is connected to the second outlet of the drainage board, and the fan is installed above the second cover.

8. The air duct assembly according to claim 7, characterized in that, The second cover has a water guiding channel that communicates with the second outlet. The edge of the water guiding channel protrudes upward to form a baffle. The fan is located on one side of the baffle.

9. The air duct assembly according to claim 8, characterized in that, The water guide channel slopes downwards in a direction away from the second outlet.

10. The air duct assembly according to claim 7, characterized in that, The drainage plate includes a drainage section and a water guiding section. The drainage section has a second outlet and is recessed relative to the top surface of the drainage plate. The water guiding section is connected to the drainage section and is recessed relative to the top surface of the drainage plate. The extending direction of the water guiding section forms a fifth angle with the air outlet direction above the drainage plate.

11. The air duct assembly according to claim 10, characterized in that, The depth of the water guide portion gradually increases in the direction of the drainage portion.

12. The air duct assembly according to any one of claims 1 to 6, characterized in that, The upper surface of the second cover slopes downwards in a direction away from the drainage plate.

13. The air duct assembly according to any one of claims 1 to 6, characterized in that, The second cover has a water collection section located on the side of the second cover facing the drain outlet. The surface area of ​​the water collection section gradually decreases in the direction of the drain outlet and is connected to the drain outlet.

14. The air duct assembly according to any one of claims 1 to 6, characterized in that, The first included angle is greater than or equal to 7°.

15. 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 14, 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.

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