Refrigeration equipment

Abstract

The present invention relates to the technical field of refrigeration equipment, and provides a refrigeration equipment, including a cabinet and an air duct assembly, wherein the air duct assembly is located in the cabinet and separates a first chamber and a second chamber, and the air duct assembly includes a partition member, an air duct member, an evaporator, and a drain plate, wherein the partition member and the air duct member limit a first cavity, a first air inlet, a second air inlet, a first air outlet, and a second air outlet, wherein the first air inlet, the first cavity, the first air outlet, and the first chamber are adapted to be connected, and the second air inlet, the first cavity, the second air outlet, and the second chamber are adapted to be connected; an evaporator and a drain plate are provided in the first cavity, wherein 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. In the refrigeration equipment proposed by the present invention, the height space occupied by the evaporator is reduced, and the space occupied by the air duct assembly in the cabinet is reduced, thereby expanding the capacity in the cabinet, and providing a large-capacity refrigeration equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration equipment, in particular to refrigeration equipment. Background Art

[0002] With the improvement of living standards, consumers have an increasing demand for storage space in refrigeration equipment, and the size of the storage space in refrigeration equipment (such as refrigerators) has also become a concern for consumers. How to increase the storage space in the refrigeration equipment without changing its volume has become a research and development direction for technicians. Among them, the components of the refrigeration system need to occupy a part of the volume of the cabinet. The installation position of the components of the refrigeration system in the cabinet will affect the volume of the cabinet and the size of the storage space limited by the cabinet. The evaporator in the refrigeration system is set at the back side of the refrigeration compartment of the refrigerator. The thickness of the cabinet is relatively large, and the storage space in the depth direction of the cabinet is insufficient, resulting in a poor user experience. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the related art. To this end, the present invention provides a refrigeration device in which an air duct assembly is placed horizontally within a cabinet, thereby reducing the height and volume of the air duct assembly, thereby expanding the space of the refrigeration device and increasing the capacity of the refrigeration device.

[0004] A refrigeration device according to an embodiment of the present invention includes:

[0005] Cabinet;

[0006] The air duct assembly is located in the cabinet and separates the first chamber and the second chamber, including a partition component, an air duct component, an evaporator and a drain board. The partition component and the air duct component limit the first cavity, the first air inlet, the second air inlet, the first air outlet and the second air outlet. The first air inlet, the first cavity, the first air outlet and the first chamber are suitable for communication, and the second air inlet, the first cavity, the second air outlet and the second chamber are suitable for communication; the evaporator and the drain board are arranged in the first cavity, the air duct component supports the drain board, and the angle between the evaporator and the horizontal plane is less than or equal to the preset angle, or the evaporator is parallel to the horizontal plane.

[0007] According to an embodiment of the present invention, a refrigeration device includes a cabinet body and an air duct assembly arranged in the cabinet body. The air duct assembly is placed horizontally in the cabinet body to separate two compartments. The air duct assembly includes a partition component and an air duct component. An evaporator is arranged between the partition component and the air duct component. The evaporator is placed horizontally in the air duct assembly. The angle formed by the evaporator and the horizontal plane is within a preset angle, or the evaporator is parallel to the horizontal plane. By limiting the angle between the evaporator and the horizontal plane to a preset angle, the height of the evaporator can be limited. When the height of the evaporator is reduced, the space occupied by the air duct assembly in the cabinet body is reduced, and the capacity of the cabinet body can be expanded to increase the capacity of the refrigeration device.

[0008] According to one embodiment of the present invention, the drain plate is configured with a water guide portion that is recessed downward relative to the top surface of the drain plate. The extension direction of the water guide portion forms a fourth angle with the air outlet direction of the air duct assembly. Air within the air duct assembly can flow along the extension direction of the water guide portion, delaying the air from flowing out in the outlet direction, extending the heat exchange time of the air within the air duct assembly, and optimizing the heat exchange effect.

[0009] According to one embodiment of the present invention, the drain plate is configured with a drain portion that is recessed downward relative to the top surface of the drain plate. The drain portion is configured with an outlet and is in communication with the water guide portion. The drain portion extends in any direction, and water received by the drain plate can be discharged through the outlet, ensuring effective heat exchange and drainage.

[0010] According to one embodiment of the present invention, the bottom of the water guide is inclined in a first direction toward the drainage portion, and the first direction forms a sixth angle with the top surface of the drainage plate, so that the depth of the water guide gradually increases toward the drainage portion. This allows water in the water guide to flow into the drainage portion, thereby improving drainage efficiency and ensuring effective drainage.

[0011] According to one embodiment of the present invention, the bottom of the drainage portion is inclined in a second direction toward the outlet, and the second direction forms a seventh angle with the top surface of the drainage board, so that the depth of the drainage portion gradually increases toward the outlet, so that water in the drainage portion can be discharged from the drainage board.

[0012] According to one embodiment of the present invention, the air duct component is provided with a water guide member, one side of the water guide member faces the outlet and is connected to the outlet, and the other side of the water guide member is configured as a drain outlet. The water guide member is inclined downward in the direction away from the outlet so that the water guide member can drain the water.

[0013] According to one embodiment of the present invention, the water guide portion extends to the end of the drainage plate and forms an opening, and a first drainage component is provided on the side where the opening is located. The opening of the water guide portion can serve as drainage.

[0014] According to one embodiment of the present invention, the device further comprises a fan, wherein the rotation axis of the fan forms a first angle with the vertical direction. The fan is arranged horizontally to reduce the height space occupied by the fan and the space occupied by the air duct assembly.

[0015] According to one embodiment of the present invention, the device further includes a fan and a fan cover. The fan is disposed on one side of the evaporator, the fan cover is located between the fan and the evaporator, the fan inlet communicates with the first cavity through a vent on the fan cover, and the fan cover is configured with the first and second exhaust ports. The fan can be installed in any manner, either horizontally or vertically.

[0016] According to one embodiment of the present invention, the cabinet includes a cabinet body, the cabinet body having a first channel, the interior of the partition member forming a cavity, and a second channel provided on the side of the partition member. The second channel, the cavity, and the first channel communicate with each other to form a foaming space. The air duct assembly and the cabinet body are integrally foamed, eliminating the problem of installation gaps between the air duct assembly and the cabinet body, and ensuring the independence of the first and second chambers.

[0017] According to one embodiment of the present invention, the partition member includes:

[0018] a first plate;

[0019] The second plate body is arranged below the first plate body. The second plate body and the first plate body form the cavity. The edge of the second plate body is recessed downward to form a recess connected to the cavity. The recess is connected to the second channel, which can optimize the foaming process and improve production efficiency.

[0020] According to one embodiment of the present invention, at least one of the partition component and the air duct component is provided with a partition, the orthographic projection of the partition at the first air inlet covers a local area of ​​the first air inlet, the orthographic projection is located at one end of the first air inlet close to the second air inlet, and the partition is spaced apart from the first air inlet by a preset distance, so as to guide part of the incoming air from the first air inlet, reduce the amount of cross-contact air in the incoming air of the two air inlets, reduce the amount of frost at the cross-contact position of the incoming air, extend the defrost interval, and reduce the defrost energy consumption.

[0021] According to one embodiment of the present invention, the second air inlet is arranged on the front side of the air duct component, and the front side of the partition component is provided with a mounting portion covering the second air inlet. While ensuring the ventilation effect of the second air inlet, the second air inlet is hidden to prevent debris from entering the second air inlet, and also to ensure the integrity of the front end structure of the air duct assembly.

[0022] According to one embodiment of the present invention, the first air inlets are located on the left and right sides of the air duct assembly and close to the front side of the air duct assembly.

[0023] According to one embodiment of the present invention, the first chamber is located above the second chamber, the first chamber is a refrigeration chamber, and the second chamber is a freezer chamber.

[0024] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 This is a schematic structural diagram of a refrigeration device provided by an embodiment of the present invention, wherein the door is not shown;

[0027] Figure 2 This is a schematic diagram of a partial structure of a refrigeration device provided by an embodiment of the present invention, and the partial structure of the cabinet and the box body are not shown in the figure;

[0028] Figure 3 yes Figure 2 A schematic diagram of the partially enlarged structure of the middle part;

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

[0030] Figure 5 This is a schematic diagram of a partially exploded state of an air duct assembly provided by an embodiment of the present invention;

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

[0032] Figure 7 This is a partial top view of an air duct assembly provided by an embodiment of the present invention, and 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 schematic side view of a partial structure of an air duct assembly provided by an embodiment of the present invention;

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

[0036] Figure 11 yes Figure 10 Schematic diagram of the partially enlarged structure of the middle C part;

[0037] Figure 12 This is a partial structural diagram of another air duct assembly provided by an embodiment of the present invention, and the figure does not show the components above the drainage plate;

[0038] Figure 13 is a schematic diagram of a partially exploded state of another air duct assembly provided by an embodiment of the present invention;

[0039] Figure 14 is a schematic longitudinal cross-sectional view of the third air duct assembly provided by an embodiment of the present invention, showing the position of the fan;

[0040] Figure 15 This is a partial structural diagram of the third air duct assembly provided by an embodiment of the present invention, and the components above the drainage plate are not shown in the figure;

[0041] Figure 16 is a schematic diagram of a partially exploded state of the structure of a third air duct assembly provided by an embodiment of the present invention;

[0042] Figure 17 1 is a schematic structural diagram of a third refrigeration device provided by an embodiment of the present invention, wherein the door is not shown;

[0043] Figure 18 is a schematic diagram of a longitudinal cross-sectional structure of a third refrigeration device provided by an embodiment of the present invention;

[0044] Figure 19 yes Figure 18 Schematic diagram of the partial enlarged structure of the D part in the middle;

[0045] Figure 20 1 is a schematic diagram of the exploded structure of the fourth air duct assembly provided by an embodiment of the present invention;

[0046] Figure 21 1 is a bottom view structural diagram of a fourth air duct assembly provided by an embodiment of the present invention;

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

[0048] Figure 23 1 is a schematic diagram of a top view of a drainage board provided in an embodiment of the present invention;

[0049] Figure 24 yes Figure 23Schematic diagram of EE cross-section structure;

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

[0051] Figure 26 1 is a structural diagram of a second plate body and its installation state in a partition component of an air duct assembly provided by an embodiment of the present invention;

[0052] Figure 27 1 is a structural schematic diagram of another second plate body in the partition component of the air duct assembly provided by an embodiment of the present invention and its installation state;

[0053] Figure 28 1 is a schematic structural diagram of a first inner concave portion and a second inner concave portion of a second plate body in a partition member of an air duct assembly provided by an embodiment of the present invention;

[0054] Figure 29 1 is a schematic structural diagram of the third inner recess of the second plate body in the partition component of the air duct assembly provided by an embodiment of the present invention;

[0055] Figure 30 This is a schematic diagram of the three-dimensional structure of the evaporator and the drain plate in the installed state according to an embodiment of the present invention;

[0056] Figure 31 This is a side structural diagram of the evaporator and the drain plate in the installed state provided by an embodiment of the present invention;

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

[0058] Figure 33 This is the second schematic diagram of the exploded state of the evaporator, drain plate and heating element provided by the embodiment of the present invention;

[0059] Figure 34 Schematic diagram of the installation state of the evaporator, the drain plate and the second heater provided in an embodiment of the present invention;

[0060] Figure 35 1 is a schematic diagram of an exploded state of an evaporator, a drain plate, and a second heater provided in an embodiment of the present invention;

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

[0062] Figure 37 1 is a schematic structural diagram of a first supporting portion in an air duct component provided by an embodiment of the present invention;

[0063] Figure 38 yes Figure 37Schematic diagram of the partially enlarged structure of the H part in the middle;

[0064] Figure 39 1 is a schematic top view of the structure of the partition member provided in an embodiment of the present invention;

[0065] Figure 40 yes Figure 39 Schematic diagram of the cross-sectional structure of AA;

[0066] Figure 41 It is a structural schematic diagram of the exploded state of the box provided by an embodiment of the present invention.

[0067] Reference numerals:

[0068] 100, drain plate; 110, drain portion; 111, first drain portion; 112, second drain portion; 113, second flow guide surface; 114, outlet; 115, third drain portion; 120, first water guide portion; 121, first flow guide surface; 123, first water guide area; 124, second water guide area; 130, second water guide portion; 131, third flow guide surface; 140, third water guide portion; 141, fourth flow guide surface; 150, flange; 151, positioning portion; 160, heating element; 170, opening;

[0069] 200, air duct assembly; 201, first air inlet; 202, second air inlet; 203, first air outlet; 204, second air outlet;

[0070] 210, partition member; 211, first plate; 212, second plate; 2121, first inner recess; 2122, first guide surface; 2123, first top surface; 2124, second inner recess; 2125, second guide surface; 2126, second top surface; 2127, third inner recess; 2128, third top surface; 2129, third guide surface; 213, first insulation layer; 214, third plate; 215, third wall; 216, cavity; 217, recess; 218, second channel;

[0071] 220, air duct component; 221, second insulation layer; 222, first support portion; 2221, partition portion; 2222, guide surface; 22221, curved surface portion; 22222, flat surface portion; 2223, guide plate; 2224, second support inclined surface; 2225, second support groove; 223, water guide; 2231, third drain pipe; 224, third insulation layer; 225, second support portion; 226, heating component;

[0072] 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 portion; 2343, mounting hole;

[0073] 240, fan cover; 241, first cover body; 2411, flow guide surface; 242, second cover body; 2421, first water guide channel; 2422, barrier portion; 2423, third drain outlet; 2424, first air guide portion; 2425, second air guide portion; 2426, second mounting column; 2427, partition plate; 2428, water collection portion; 243, fan cover; 2431, third air guide portion; 2432, fourth air guide portion; 244, vent;

[0074] 250, first air gate;

[0075] 260, first drainage component; 262, first drainage port; 263, first drainage pipe; 264, first wall panel; 265, second wall panel;

[0076] 270, fan; 271, fan mounting base;

[0077] 281, second cavity; 282, first cavity;

[0078] 290. Second drainage component; 291. Second drainage pipe;

[0079] 300, box body; 312, first channel; 311, slot; 313, positioning slot;

[0080] 400, cabinet; 410, first compartment; 420, second compartment; 430, return air component;

[0081] 431, return air duct; 432, main return air outlet; 433, auxiliary return air outlet;

[0082] α1, first angle; α2, second angle; α3, third angle;

[0083] θ2, the sixth angle; θ3, the seventh angle. DETAILED DESCRIPTION

[0084] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0085] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "multiple", "multiple roots", and "multiple groups" mean two or more.

[0086] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on the specific circumstances.

[0087] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0088] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0089] The embodiments of the present invention, combined with Figures 1 to 41 As shown, a refrigeration device is provided, including a cabinet body 400, and the cabinet body 400 includes a cabinet.

[0090] Refrigeration equipment can be a variety of equipment such as refrigerators, freezers, display cabinets, vending cabinets or wine cabinets. Refrigeration equipment can be used for refrigeration or freezing.

[0091] In the following embodiments, the directions of front, back, left, right, up and down correspond to the directions of the refrigeration equipment.

[0092] An embodiment of the present invention provides a box liner, which includes a box liner body 300 and an air duct assembly 200 . The air duct assembly 200 separates the space inside the box liner body 300 into a first chamber 410 and a second chamber 420 that are independent of each other.

[0093] The air duct assembly 200 can serve as a partition between the chambers and also circulate air. It should be noted that to ensure the independence of the first chamber 410 and the second chamber 420, the mounting point of the air duct assembly 200 and the chamber body 300 must be sealed to prevent air from flowing between the first chamber 410 and the second chamber 420.

[0094] An embodiment of the present invention provides an air duct assembly 200, which can divide the entire space within the box body 300 into two parts: a first chamber 410 and a second chamber 420. Alternatively, the air duct assembly 200 can divide a local space within the box body 300 into two parts: the first chamber 410 and the second chamber 420.

[0095] The air duct assembly 200 independently supplies air to the first and second compartments 410, 420. The functions of the first and second compartments 410, 420 may be the same or different. If the functions of the first and second compartments 410, 420 are different, that is, the ambient temperatures within the first and second compartments 410, 420 are different, such as the first compartment 410 being a refrigerator and the second compartment 420 being a freezer, the air duct assembly 200 supplies air to the refrigerator at a lower frequency than it supplies air to the freezer. If the functions of the first and second compartments 410, 420 are the same, such as both being refrigerators, the ambient temperatures within the two compartments may be the same or different. In this case, the air duct assembly 200 supplies air to the two compartments at the same or different frequencies, depending on the needs. Of course, the compartments separated by the air duct assembly 200 are not limited to refrigerators and freezers; they may also serve as variable-temperature compartments or other functional compartments, depending on the needs.

[0096] When the cabinet 400 is connected to the door, and the door is in a position to close the cabinet 400, the first chamber 410 and the second chamber 420 are two closed and independent spaces; when the door is in a position to open the cabinet 400, items can be taken in and out of at least one of the first chamber 410 and the second chamber 420.

[0097] The number of air duct components 200 provided in the refrigeration equipment can be set as needed.

[0098] It is understandable that if Figures 2 to 3 、 Figure 10 、 Figure 11 as well as Figures 17 to 20 As shown, the air duct assembly 200 includes a baffle member 210, an air duct member 220, an evaporator 230, and a drain plate 100. The baffle member 210 is located above the air duct member 220. The baffle member 210 and the air duct member 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 within the first cavity 282, and the drain plate 100 is located below the evaporator 230. The baffle member 210 and the air duct member 220 together define the interconnected air inlet, the first cavity 282, and the air outlet, so that air entering the air duct assembly 200 can be discharged after heat exchange.

[0099] like Figure 1 and Figure 2 As shown, the partition member 210 is connected to the liner body 300, and the connection between the partition member 210 and the liner body 300 is sealed to separate the space within the liner body 300 into a first chamber 410 and a second chamber 420 that are independent of each other. The first cavity 282 between the partition member 210 and the air duct member 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.

[0100] The air inlet of the air duct assembly 200 is divided into a first air inlet 201 and a second air inlet 202, and the air outlet of the air duct assembly 200 is divided into a first air outlet 203 and a second air outlet 204. The first air inlet 201, the first cavity 282, the first air outlet 203, and the first chamber 410 are connected to form a first circulation path. The second air inlet 202, the first cavity 282, the second air outlet 204, and the second chamber 420 are connected to form a second circulation path. The first circulation path is connected to at least one of the second circulation paths to supply air to the first chamber 410 and the second chamber 420. The number and position of the first air inlet 201, the second air inlet 202, the first air outlet 203, and the second air outlet 204 are not limited.

[0101] like Figure 1 and Figure 2As shown, the first compartment 410 is located above the duct assembly 200 and is configured as a refrigerator compartment. The second compartment 420 is located below the duct assembly 200 and is configured as a freezer compartment. That is, the first compartment 410 is located above the second compartment 420. The duct assembly 200 is provided with a first air outlet 203 facing upward and a second air outlet 204 facing downward. A first damper 250 is provided at the first air outlet 203 for opening and closing adjustment, and a second damper is provided at the second air outlet 204 for opening and closing adjustment. The duct assembly 200 is provided with a first air inlet 201 and a second air inlet 202 at the front end. The first air inlet 201 communicates with the return air duct of the refrigerator compartment and is located on the left and right sides of the duct assembly 200. The second air inlet 202 communicates with the freezer compartment and is located on the front or bottom side of the duct assembly 200.

[0102] 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 exhaust outlet 203 and the second air exhaust outlet 204 are also close to the same end of the air duct assembly 200, and the air inlet and the air exhaust outlet are generally at opposite ends, such as the air inlet close to the front end and the air exhaust outlet close to the rear end, but the aforementioned positions are not limited. The air inlets can also be close to the left end or the right end. The positions of the air inlet and the air exhaust outlet are flexible and can be selected according to needs.

[0103] In some cases, the first air inlet 201 is located on a first side of the first cavity 282, and the second air inlet 202 is located on a second side of the first cavity 282, with the first side and the second side adjacent to each other. This means that 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 entering the first air inlet 201 and the air entering the second air inlet 202 will intersect within the first cavity 282. When the first air inlet 201 and the second air inlet 202 have different air temperatures (i.e., the ambient temperatures of the first chamber 410 and the second chamber 420 are different), frost easily forms at the intersection of the air entering the first air inlet 201 and the second air inlet 202 due to contact heat exchange. The first air inlet 201 and the second air inlet 202 are located on different sides of the air duct assembly 200. This can also be understood as forming an angle between the first air inlet 201 and the second air inlet 202.

[0104] like Figure 6 As shown, the first side is at least one of the left side and the right side, and the second side is the front side.

[0105] Next, combine Figures 1 to 16 as well as Figures 20 to 25As shown, an embodiment of the drain board 100 is provided, and the structure of the drain board 100 is described using the example of the drain board 100 being installed in the aforementioned air duct assembly 200. However, the drain board 100 is not limited to being installed in the aforementioned air duct assembly 200. Other structures suitable for installing the drain board 100 in the following embodiment can also install the drain board 100 described below.

[0106] The embodiments of the present invention, combined with Figures 1 to 7 As shown, a drainage board 100 is provided, which is constructed with a water guide portion that is recessed downward relative to the top surface of the drain board 100, and the water guide portion extends to both sides of the preset surface to the edge of the drain board 100, so that an opening 170 is formed at the edge of the drain board 100, and the opening 170 is facing the side where the first air inlet 201 is located, so that part of the air intake of the first air inlet 201 is suitable for passing through the opening 170 and flowing into the first cavity 282 along the extension direction of the water guide portion.

[0107] The function of the first air inlet 201 is not limited. It can be connected to the refrigerator compartment, with the water guide portion directing the refrigerated air; or, the water guide portion can be connected to the freezer compartment and also direct the frozen air. By providing the water guide portion and designing the drainage plate into an inverted V-shaped structure, a portion of the refrigerated return air enters the evaporator 230 through the V-shaped structure space, thereby solving the problem of condensation of the refrigerator return air, reducing the contact between the refrigerated return air and the frozen return air, and reducing the accumulation and condensation of the refrigerated return air. This allows frost to be more evenly distributed within the evaporator, reducing frost blockage of the frozen return air.

[0108] Part of the air intake from the first air inlet 201 passes through the opening 170 and is introduced into the first cavity 282 along the extension direction of the water guide portion, so that part of the air intake from the first air inlet 201 can be diverted, reducing the amount of air that intersects with the air intake from the second air inlet 202, thereby reducing frost condensed due to the contact between the air intake from the first air inlet 201 and the air intake from the second air inlet 202, extending the interval between two defrosting times, reducing the number of defrosting times, reducing the power consumption required for defrosting, and reducing the power consumption of the refrigeration equipment.

[0109] The water guide portion is recessed downward relative to the top surface of the drainage plate 100, so that a groove is formed in the drainage plate 100. Part of the air entering the first air inlet 201 can flow along the groove into the interior of the first cavity 282, and the water guide portion can guide the wind therein.

[0110] The predetermined surface forms an angle with the extension direction of the water guide portion, and the predetermined surface extends from the air inlet to the air outlet. For example, 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, the predetermined surface extends from front to rear. Here, the predetermined surface can extend from front to rear, and the predetermined surface can extend at an angle. The position of the predetermined surface can be selected as needed.

[0111] In some cases, the preset surface may be a symmetrical surface of the drain board 100 , and the water guide portions are symmetrically arranged on both sides of the preset surface, so that the drain board 100 has a symmetrical structure and the structural stability of the drain board 100 is better.

[0112] Of course, the predetermined surface is not limited to a symmetrical surface, and the opening 170 can be provided on one or both sides of the drain board 100. When the opening 170 is provided on one side of the drain board 100, the predetermined surface can be a side surface of the drain board 100 that is opposite the first air inlet 201; when the opening 170 is provided on both sides of the drain board 100, the predetermined surface can be any surface extending from the front to the rear.

[0113] The opening 170 of the drain plate 100 can guide part of the air entering the first air inlet 201 , and the opening 170 of the drain plate 100 can also drain water.

[0114] When the opening 170 of the drain 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 drain plate 100 may not be limited.

[0115] In some cases, the depth of the concave water guide gradually increases toward opening 170. This type of water guide can be referred to as the second water guide 130. Specifically, the second water guide 130 has a greater depth toward opening 170, helping to guide air flow within it. When the evaporator 230 is placed above the drain plate 100, the gradually increasing depth of the second water guide 130 also increases the distance between the evaporator 230 and the drain plate 100, broadening the airflow space. It also helps defrost water held by the drain plate 100 drain through opening 170.

[0116] The depth of the second water guiding portion 130 gradually increases toward one end of the opening 170 , and may increase continuously or in a step-like manner.

[0117] It is understood that the bottom of the second water guide 130 is inclined in a first predetermined direction toward the opening 170, and the first predetermined direction forms a first predetermined angle with the top surface of the drain plate 100. In other words, the bottom surface of the second water guide 130 is an inclined surface extending downward in the first predetermined direction, which facilitates airflow into the first cavity 282 and facilitates drainage.

[0118] The first preset direction is a direction that forms a first preset angle with the top surface and is inclined downward along the preset surface toward the opening 170 . The size of the first preset angle can be selected as needed.

[0119] In order to reduce the height dimension of the drainage board 100, the first preset angle can be an angle less than or equal to 7°, so that both the drainage effect and the wind guiding effect can meet the requirements. It can also reduce the height dimension of the air duct assembly 200 and reduce the height direction space occupied by the air duct assembly 200 in the cabinet 400, which helps to increase the compartment space in the cabinet 400 to provide large-capacity refrigeration equipment.

[0120] In some cases, the first preset angle is set to 3°, which can meet the drainage requirements of the drain board 100 and can also fully reduce the height of the drain board 100 to achieve small-angle drainage. Of course, the first preset angle can also be set to 1°, 2°, 4°, 5°, 6° or 7°.

[0121] Of course, the depth of the depression of the second water guide portion may also remain unchanged (not shown in the figure). If the depth of the depression of the second water guide portion remains consistent, it can also play the role of guiding wind and draining water.

[0122] It is understood that the water guide portion includes a guide surface provided along its extension direction, and the guide surface approaches the opposite side from the top to the bottom of the drain plate 100. In other words, the second water guide portion 130 is provided with a third guide surface 131 along its extension direction, and the third guide surface 131 approaches the opposite side from the top to the bottom of the drain plate 100, and the third guide surface 131 is an inclined surface inclined toward the opposite side.

[0123] The defrost water received by the top surface of the drain plate 100 and the third guide surface 131 can fall into the bottom of the water guide portion along the guide direction of the third guide surface 131, so that the defrost water is gathered in the water guide portion so that the water in the water guide portion can be discharged.

[0124] The side surface opposite to the third guide surface 131 can be a vertically arranged surface, or can also be a guide surface, which can be selected according to needs. Figure 5 and Figure 6 As shown, two opposite side surfaces of the second water guiding portion 130 are both third guiding surfaces 131 .

[0125] like Figures 5 to 7 As shown, multiple second water guides 130 are provided on each side of the preset surface of the drainage plate 100, and the multiple second water guides 130 are arranged in parallel, and multiple 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 along the multiple openings 170.

[0126] At the preset height, the width of the second water guide portion 130 gradually decreases toward the opening 170 , so that the water received in the second water guide portion 130 can be easily collected toward the opening 170 .

[0127] Combine Figures 1 to 7As shown and described above, the drain plate 100 having the second water guide portion 130 may not be provided with the drain portion 110 .

[0128] Combine Figures 1 to 16 、 Figures 20 to 25 As shown, an embodiment of the present invention provides another drain board 100 , which is constructed with a water guide portion that is recessed relative to the top surface of the drain board 100 , and an extension direction of the water guide portion forms a fourth angle with the air outlet direction above the drain board 100 .

[0129] When the 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 toward the exhaust port. The air within the first cavity 282 flows through the space between the drain plate 100 and the evaporator 230, as well as within the space within the evaporator 230. As the air flows between the drain plate 100 and the evaporator 230, the water guide forms a fourth angle with the air outlet direction, preventing the air from flowing directly from the water guide to the exhaust port. This prolongs the time the air remains within the first cavity 282, allowing the air to fully contact and exchange heat with the evaporator 230. The heat-exchanged air is then discharged through the exhaust port, thereby improving heat exchange efficiency.

[0130] The air outlet direction is the direction from the air inlet to the air outlet. In some cases, only one air inlet and one air outlet are provided, which are in a one-to-one correspondence, forming one air outlet direction. In some cases, at least one of the air inlet or the air outlet is provided in multiple directions, which can form multiple air outlet directions. The extension direction of the water guide forms an angle with at least one air outlet direction, which can ensure the heat exchange efficiency of the wind in one direction. Of course, if the extension direction of the water guide forms an angle with all air outlet directions, it can ensure that the wind in multiple flow paths can effectively exchange heat, which can ensure the heat exchange efficiency. The air inlet is generally provided at the front end of the air duct assembly 200, and the air outlet is generally provided at the rear end of the air duct assembly 200, so the air outlet direction can be from front to rear.

[0131] When the air inlet is divided into a first air inlet 201 and a second air inlet 202, the second air inlet 202 is arranged in front of the air duct assembly 200, and the air outlet is arranged behind the air duct assembly 200, the communication path between the second air inlet 202 and the air outlet forms a first air outlet direction, and the second air inlet 202 corresponds to the lower position of the evaporator 230, then the wind flows from bottom to top and from front to back.

[0132] In the drain plate 100 of this embodiment, the extension direction of the water guide forms an angle with the first air outlet direction, that is, the extension direction of the water guide 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 air duct assembly 200. The communication path between the first air inlet 201 and the air outlet forms a second air outlet direction, and the extension direction of the water guide also forms an angle with the second air outlet direction. The angles formed by the extension direction of the water guide with the first air outlet direction and the extension direction of the water guide with the second air outlet direction can both be understood as the fourth angle, but the specific angle values ​​can be the same or different.

[0133] The extension direction of the water guide portion can be a straight path or a curved path. When the extension path of the water guide portion is a straight path, the path from one end of the water guide portion away from the drain portion 110 to the other end of the water guide portion connected to the drain portion 110 is the extension path; when the extension path of the water guide portion is a curved path, the water guide portion of the curved path may have multiple ends connected to the drain portion 110, and the curved path may be a broken line path formed by connecting multiple straight paths, or the curved path may be a curve with one or more curvature radii, and the shape of the curved path can be set as needed. The extension direction of a water guide portion 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 specifically as needed.

[0134] Combine Figures 10 to 25 As shown, an embodiment of the present invention provides another drain board 100, which is constructed with a drain portion 110 and a water guide portion. The drain portion 110 is constructed with an outlet 114, and the drain portion 110 is recessed relative to the top surface of the drain board 100; the water guide portion is connected to the drain portion 110, and the water guide portion is recessed relative to the top surface of the drain board 100, and the extension direction of the water guide portion forms a fifth angle θ1 with the air outlet direction above the drain board 100.

[0135] When in use, the drain plate 100 is positioned below the evaporator 230 to collect defrost water generated when frost on the evaporator 230 surface is heated. Some of this water falls into the water guide and is directed along its extension into the drain section 110. Multiple water guides are typically provided, and the water collected by each of these guides is collected and discharged through the outlet 114 of the drain section 110. The remaining water falls directly into the drain section 110 and is discharged there.

[0136] The difference between the fifth angle and the fourth angle is that, for a drain board equipped with both a water guide and a drain, the fifth angle is formed by the direction in which the water guide extends and the direction in which air flows; for a drain board equipped with only a water guide, the fourth angle is formed by the direction in which the water guide extends and the direction in which air flows. The values ​​of the fifth and fourth angles can be selected as needed and are not limited here.

[0137] Figure 23The solid arrow above the middle drain board 100 indicates the extension direction of the water guide, the dotted arrow indicates the air outlet direction, and the fifth angle θ1 is marked. The figure illustrates the case where the fifth angle is 90°. It should be noted that the water guide and the drainage portion 110 are both recessed based on the top surface of the drain board 100. The top surface can be a plane or a curved surface. The top surface can be a surface limited by multiple lines, or a surface limited by multiple surfaces. Correspondingly, the bottom of the water guide and the bottom of the drainage portion 110 form the bottom surface of the drain board 100. The bottom surface can also be a plane or a curved surface. The bottom surface can be a surface limited by multiple lines, or a surface limited by multiple surfaces. The upper surface of the drain board 100 is the entire surface of the drain board 100 facing upward, and the top surface is a part of the upper surface; the lower surface of the drain board 100 is the entire surface of the drain board 100 facing downward, and the bottom surface is a part of the lower surface.

[0138] The drainage plate 100 of this embodiment cooperates with the water guide part and the drainage part 110 to drain the collected water, thereby solving the drainage problem in the air duct assembly 200. In addition, by setting the water guide part to form an angle between the extension direction and the air outlet direction of the air duct assembly 200, the time that the wind stays in the air duct assembly 200 can be extended, that is, the heat exchange time can be extended to improve the heat exchange efficiency and meet the cooling needs of the refrigeration equipment; and the structure of the drainage plate 100 is simple.

[0139] In the structure of the drain plate 100 according to the embodiment of the present invention, when the depth of the water guide portion being recessed downward relative to the top surface of the drain plate 100 remains unchanged, and the drain plate 100 is configured with a drainage portion 110 recessed relative to the top surface of the drain plate 100, this water guide portion can be referred to as the third water guide portion 140. Figures 11 to 13 As shown, the drainage portion 110 is constructed with an outlet 114, and the third water guide portion 140 is connected to the drainage portion 110. The defrost water received by the third water guide portion 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 portion 110, thereby realizing multi-directional drainage, simple structure and good drainage effect.

[0140] In this case, the evaporator 230 and the drain plate 100 can be placed horizontally, allowing for defrost water drainage and reducing the height of the duct assembly 200. If both the evaporator 230 and the drain plate 100 are tilted downward for drainage, 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 of the duct assembly 200 and increasing the internal capacity of the refrigeration equipment.

[0141] The outlet 114 of the drainage portion 110 and the exhaust port are located on the same side of the first cavity 282 . The drainage portion and the exhaust portion are located on the same side of the first cavity 282 , which facilitates integration of the drainage structure and the exhaust structure.

[0142] When a fan 270 is provided in the air duct assembly 200 , 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, and the defrost water of the fan 270 can be discharged together with the defrost water of the drainage plate 100 .

[0143] Along the extension direction of the drainage portion 110, multiple third water guide portions 140 are arranged in parallel on both sides of the drainage portion 110. The multiple third water guide portions 140 are distributed below the evaporator 230 so as to receive defrost water at multiple positions below the evaporator 230, which helps to quickly drain the water.

[0144] Multiple drain sections 110 can be provided, and these sections can be arranged parallel to or at an angle. If the area of ​​the drain plate 100 remains unchanged, a greater number of drain sections 110 can shorten the length of the third water guide section 140, helping to pool water within the drain section 110 and shortening defrost drainage time. When multiple drain sections 110 are provided, the third water guide sections 140 near the edge of the drain plate have openings, leaving the remaining third water guide sections 140 connected to the drain section 110.

[0145] It can be understood that the depth of the concave portion 110 gradually increases toward the outlet 114 , so that water in the drain portion 110 flows toward the outlet 114 under the action of gravity.

[0146] It is understood that the bottom of the drain portion 110 is inclined along the second direction, which forms a seventh angle θ3 with the top surface of the drain plate 100. In other words, the bottom of the drain portion 110 is inclined, and water within the drain portion 110 is collected along the inclined path (the second direction) and discharged to the outlet 114, thereby improving drainage efficiency, preventing localized water accumulation, and ensuring smooth water flow.

[0147] When the top surface of drain board 100 is horizontal, it can be understood that the second direction forms a seventh angle θ3 with the horizontal plane. Along the top surface of drain board 100, the position gradually recesses downward toward outlet 114 to form drain portion 110. In this case, seventh angle θ3 is the angle between the bottom of drain portion 110 and the horizontal plane, and the second direction is diagonally downward.

[0148] The bottom of the drainage portion 110 may be a slant line or a slope. In some cases, the bottom of the drainage portion 110 is a slope, and the slope may be a plane or a curved surface, which can be selected according to needs.

[0149] In some cases, the bottom of the drainage portion 110 does not form a continuous oblique line or inclined surface, such as a stepped shape, which can still meet the drainage requirements.

[0150] It can be understood that the seventh angle θ3 can be less than or equal to 7°. The small angle of the seventh angle θ3 helps to reduce the distance between the top surface and the bottom surface of the drainage board 100, and can achieve small-angle drainage, thereby reducing the height size of the duct assembly 200, reducing the space occupied by the duct assembly 200, and helping to increase the storage space of the refrigeration equipment, providing a large-capacity refrigeration equipment.

[0151] It should be noted that the seventh angle θ3 may also be greater than 7°. Since the drainage portion 110 occupies a smaller area of ​​the drainage board 100, the downward tilt angle of the drainage portion 110 is slightly larger, which has little effect on the overall volume of the drainage board 100. Therefore, the angle of the seventh angle θ3 is not strictly limited.

[0152] In some cases, such as Figure 12 As shown, the depth of the concave drain portion 110 remains unchanged. In this case, the drain portion can be referred to as the third drain portion 115. The drain plate 100 is tilted toward the outlet 114 to facilitate drainage. If the outlet 114 is located at the rear end of the air duct assembly 200, the drain plate 100 is tilted downward from front to rear so that water in the drain portion 110 flows backward and is discharged.

[0153] like Figure 11 and Figure 12 As shown, third water guide 140 includes a fourth guide surface 141 extending along the direction of third water guide 140. Fourth guide surface 141 approaches the opposite side of drain plate 100 from the top to the bottom. Fourth guide surface 141 guides defrost water received by drain plate 100 top and fourth guide surface 141 to the bottom of third water guide 140, facilitating drainage of the water within third water guide 140.

[0154] From the bottom to the top of the drain plate 100, the fourth guide surface 141 is inclined toward the outlet 114. When the drain plate 100 is inclined toward the outlet 114, a large amount of water is collected in the third water guide portion 140, and the fourth guide surface 141 can divert the water backward, directing some of the water to be discharged from the rear.

[0155] The embodiment of the present invention, combined with Figures 20 to 25 As shown, the depth of the concave water guide portion gradually increases toward the drain portion 110. 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 toward the drain portion 110, so that water flows toward the drain portion 110 under the action of gravity and is discharged from the outlet 114 of the drain portion 110.

[0156] It can be understood that the bottom of the first water guide 120 is inclined along a first direction toward the drain portion 110, and the first direction forms a sixth angle θ2 with the top surface of the drain plate 100. In other words, the bottom of the first water guide 120 is inclined, and water within the first water guide 120 is collected along the inclined path (first direction) to the drain portion 110, thereby improving drainage efficiency, avoiding localized water accumulation, and ensuring smooth water flow.

[0157] When the top surface of drain plate 100 is horizontal, it can be understood that the first direction forms a sixth angle θ2 with the horizontal plane. Along the top surface of drain plate 100, the first water guide 120 is formed by gradually concavely extending downward from the end away from drain portion 110 toward the position connected to drain portion 110. In this case, the sixth angle θ2 is the angle between the bottom of first water guide 120 and the horizontal plane, and the first direction is an obliquely downward direction.

[0158] The bottom of the first water guide portion 120 may be a slant line or a slope. In some cases, the bottom of the first water guide portion 120 is a slope, and the slope may be a flat surface or a curved surface, which can be selected according to needs.

[0159] In some cases, the bottom of the first water guiding portion 120 does not form a continuous oblique line or inclined surface, such as a step-shaped bottom, which can still meet the water guiding requirements.

[0160] It can be understood that the sixth angle θ2 is less than or equal to 7°. The small angle of the sixth angle θ2 helps to reduce the distance between the top surface and the bottom surface of the drainage board 100, and can achieve small-angle drainage, thereby reducing the height size of the duct assembly 200, reducing the space occupied by the duct assembly 200, and helping to increase the storage space of the refrigeration equipment, providing a large-capacity refrigeration equipment.

[0161] In some cases, the sixth angle θ2 is set to 3°, which can meet the drainage requirements of the drain board 100 and can also fully reduce the height of the drain board 100 to achieve small-angle drainage. Of course, the sixth angle can also be 1°, 2°, 4°, 5° or 6°.

[0162] In some cases, the difference between the first water guide portion 120 and the above-mentioned third water guide portion 140 is that the first water guide portion 120 is inclined toward the drainage portion 110 in the drainage board 100, and the third water guide portion 140 is inclined toward the end of the drainage board 100, that is, the inclination directions are different, and other structures and parameters can be set to the same, such as the inclination angle can be the same.

[0163] It can be understood that the bottom surfaces of the corresponding drainage boards 100 of the multiple water guide parts arranged in parallel on the same side of the drainage part 110 are coplanar, so that the bottom surface of the drainage board 100 is smoother, the appearance of the drainage board 100 is simple, and it is easy to position and install.

[0164] The term "parallel arrangement" here can be understood as multiple water guides being arranged in sequence on one side of the drain portion 110's extension direction. Generally, multiple water guides are arranged in parallel on both sides of the drain portion 110, that is, the drain portion 110 is positioned between two rows of water guides. Of course, if the drain portion 110 is positioned at the end of the drain plate 100, the water guides are only positioned on one side of the drain portion 110.

[0165] It can be understood that the extension direction of the water guide portion is perpendicular to the air outlet direction, which effectively prolongs the time that the air stays in the first cavity 282 to fully exchange heat.

[0166] It can be understood that the extension direction of the drainage portion 110 forms an eighth angle with the air outlet direction, which minimizes the discharge of wind along the extension direction of the drainage portion 110 and also prolongs the time the wind stays in the first cavity 282 to ensure the heat exchange effect.

[0167] Of course, the drainage portion 110 may also extend along the air outlet direction, and water guide portions may be symmetrically provided on both sides of the drainage portion 110 to facilitate uniform and stable water guidance by the water guide portions on both sides of the drainage portion 110 .

[0168] like Figure 20 and Figure 25 As shown, when the drainage portion 110 extends along the wind outlet direction, the water guide portion is perpendicular to the wind outlet direction, so as to minimize the wind entering the water guide portion.

[0169] It is understandable that if Figure 24 and Figure 25 As shown, the depth of the concave drainage portion 110 is greater than or equal to the depth of the concave water guide portion. That is, the minimum depth of the drainage portion 110 needs to be greater than or equal to the maximum depth of the water guide portion so that water from the water guide portion can be gathered into the drainage portion 110 to avoid water accumulation in the water guide portion.

[0170] It is understandable that if Figure 20 、 Figure 21 as well as Figure 24 As shown, multiple parallel water guides are provided on both sides of the drain portion 110, and the multiple water guides guide water from different locations into the drain portion 110. By providing multiple water guides, it can also be understood that both sides of the drain portion 110 form a wavy structure, which minimizes the area of ​​the top surface of the drain board 100, reduces water accumulation on the top surface of the drain board 100, and allows the water received by the drain board 100 to be discharged from the outlet 114 as quickly as possible along the water guides and the drain portion 110.

[0171] It is understandable that if Figure 22 and Figure 23As shown, at least two drainage portions 110 are provided, and two or more drainage portions 110 have two or more outlets 114, achieving drainage at multiple locations and helping to quickly drain water from the drain board 100. While the area of ​​the drain board 100 remains unchanged, increasing the number of drainage portions 110 can shorten the length of the water guide portion, allowing water to enter the drainage portions 110 more quickly.

[0172] Adjacent drain sections 110 are a first drain section 111 and a second drain section 112. A first water guide area 123, located on one side of the first drain section 111, and a second water guide area 124, located on one side of the second drain section 112, are constructed between the first drain section 111 and the second drain section 112. The depth of the water guide recess in the first water guide area 123 gradually increases toward the first drain section 111, and the depth of the water guide recess in the second water guide area 124 gradually increases toward the second drain section 112. Specifically, the depth of the water guide recess is minimal at the junction of the first water guide area 123 and the second water guide area 124. This facilitates the diversion of water from the first water guide area 123 to the first drain section 111 and from the second water guide area 124 to the second drain section 112, shortening the length of the water guides and facilitating the collection of water into the drain section 110.

[0173] Of course, if Figure 15 As shown, the drainage portion 110 can also be provided with one, in which case the outlet 114 of the drainage portion 110 is preferably kept away from the inlet of the fan 270. A plurality of parallel water guides are provided on both sides of the drainage portion 110, which helps to shorten the water guide path of the water guide to speed up water drainage.

[0174] like Figure 12 、 Figure 13 、 Figure 15 、 Figure 16 as well as Figures 22 to 23 As shown, the drainage portion 110 extends from front to rear, the outlet 114 is arranged at the rear end of the drainage plate 100, the water guide portion extends in the left and right directions, and the left and right sides of the drainage portion 110 form a wavy structure. The setting of the wavy plate can facilitate the gathering and discharge of water. At this time, the evaporator 230 does not need to be arranged downwardly along the front and rear directions.

[0175] The water guide forms an angle of less than 7° with the top surface of the drain board 100. That is, the drain board 100 forms a water guide that extends obliquely in the left-right direction, and the inclination angle of the water guide does not affect the angle of the drain board 100 in the front-to-back direction. The drain portion 110 extends from front to back and forms a seventh angle θ3 with the horizontal plane from front to back. The seventh angle θ3 affects the height change of the drain board 100 in the front-to-back direction. However, overall, the drain portion 110 is located in a local position of the drain board 100, and the area of ​​the drain board 100 occupied by the drain portion 110 is relatively small. The local inclination angle of the drain board 100 is slightly larger, which has a smaller impact on the overall storage space in the compartment and can also optimize the volume within the compartment.

[0176] In the above content, the water guide part can be at least one of the above-mentioned first water guide part 120 and the third water guide part 140, that is, the drain board 100 can be constructed with the above-mentioned drainage part 110 and at least one of the above-mentioned first water guide part 120 and the third water guide part 140, and the structure of the drain board 100 is diverse.

[0177] Understandably, the reference Figure 24 and Figure 25 As shown, the first water guide portion 120 includes a first guide surface 121 arranged along the extension direction of the first water guide portion 120. From the top surface to the bottom surface of the drainage plate 100, the first guide surface 121 approaches its opposite side surface, that is, the longitudinal section of the first water guide portion 120 converges from top to bottom, so that the water falling on the first guide surface 121 and the top surface can be collected to the bottom of the first water guide portion 120, and then collected to the drainage portion 110 along the first water guide portion 120.

[0178] At least one of the two side surfaces of the first water guide portion 120 along its extension direction is configured as a first flow guide surface 121. The longitudinal cross-section of the first water guide portion 120 may be in the shape of an inverted triangle or an inverted trapezoid. Figure 24 and Figure 25 As shown, both side surfaces of the first water guiding portion 120 in the extending direction are first flow guiding surfaces 121 , and both sides of the first water guiding portion 120 can be used for flow guiding.

[0179] Understandably, the reference Figure 24 and Figure 25 As shown, the drainage portion 110 includes a second guide surface 113 arranged along the extension direction of the drainage portion 110. From the top surface to the bottom surface of the drainage plate 100, the second guide surface 113 approaches its opposite side surface so that the longitudinal section of the drainage portion 110 converges from top to bottom. The water falling on the second guide surface 113 and the top surface can be collected at the bottom of the drainage portion 110 and then discharged from the outlet 114.

[0180] At least one of the two side surfaces of the drainage portion 110 along its extension direction is configured as a second guide surface 113. The shape of the longitudinal section of the drainage portion 110 can be an inverted triangle or an inverted trapezoid. Figure 25 As shown, both side surfaces of the drainage portion 110 in the extension direction are second guide surfaces 113 , and both sides of the drainage portion 110 can be used for diversion.

[0181] like Figure 24 and Figure 25 As shown, the first water guide portion 120 is provided with a first guide surface 121 , and the drainage portion 110 is provided with a second guide surface 113 , which fully guides the water so that the water received by the drainage plate 100 can be discharged from the outlet 114 as quickly as possible.

[0182] In the above embodiment, the first guide surface 121 and the second guide surface 113 can be flat surfaces or curved surfaces, which can be selected according to specific needs.

[0183] It can be understood that the width of the water guide gradually decreases toward the drain portion 110 along the first predetermined cross-section of the water guide extending in the direction of the water guide. It can also be understood that the water guide gradually converges toward the drain portion 110 to allow the water in the water guide to converge and facilitate the water in the water guide to enter the drain portion 110.

[0184] The first predetermined cross-section here can be understood as a cross-section parallel to the top surface of the drain board 100, a horizontal cross-section of the drain board 100 in its installed state. The width of the water guide portion can be understood as the distance between the two side walls of the water guide portion in the direction of its extension. Taking the first water guide portion 120 as an example, it can be understood as the distance between the two first guide surfaces 121. Gradual reduction generally refers to a continuous decrease, but a step-by-step decrease is not excluded.

[0185] It is understood that the width of drain portion 110 increases toward outlet 114 along the second predetermined cross-section of drain portion 110. Defrost water collected by the multiple water guides converges toward drain portion 110, with the largest amount of water flowing at outlet 114. The increased width of drain portion 110 provides more drainage space and facilitates stable water drainage.

[0186] The second predetermined cross-section here can be understood as a cross-section parallel to the top surface of the drain board 100, a horizontal cross-section of the drain board 100 in its installed state. The width of the drain portion 110 can be understood as the distance between the two sidewalls in the direction of extension of the drain portion 110, that is, the distance between the two second guide surfaces 113. The increase is generally gradual, but a step-like increase is not excluded.

[0187] The first preset cross section is parallel to the second preset cross section and may also be coplanar.

[0188] It is understandable that if Figure 22As shown, the edge of the drain board 100 is folded upward to form a flange 150. The flange 150 surrounds the drain board 100 and is grooved at a position corresponding to the outlet 114. The flange 150 prevents water from overflowing from the upper surface of the drain board 100, so that all water on the upper surface of the drain board 100 is discharged through the outlet 114, thereby ensuring that all water in the air duct assembly 200 is discharged through the drain outlet.

[0189] A local portion of the flange 150 extends upward to form a positioning portion 151 . Two adjacent positioning portions 151 are used to position the first heater 231 above the drain board 100 . The fixing method of the first heater 231 is simple, and the structure of the drain board 100 is simple.

[0190] It should be noted that when an opening is formed at the end of the water guide portion, there is no need to provide a flange.

[0191] In the above embodiment, the outline of the drain plate 100 is related to the shapes of the evaporator 230 and the air duct assembly 200, and the shape of the drain plate 100 is not limited. The outline 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.

[0192] The drain plate 100 in the above embodiment is applied to the air duct assembly 200, that is, the drain plate 100 is arranged below the evaporator 230. From the front to the back, the evaporator 230 does not need to be tilted downward, which solves the problem that the evaporator 230 has a tilt angle and the volume inside the compartment is lost. While ensuring the heat exchange efficiency in the air duct assembly 200, small-angle defrosting and drainage are achieved, and the height difference of the air duct assembly 200 is reduced, which helps to maximize the volume inside the compartment.

[0193] Of course, in actual use, the evaporator 230 may also be tilted slightly downward, but even if the evaporator 230 is not tilted downward, it will not affect the drainage effect.

[0194] The drain plate 100 is also connected to a vibrator (not shown in the figure), which provides a 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 synchronously with the defrosting process or delayed appropriately compared to the defrosting process.

[0195] The vibrator may be any one of an eccentric motor, an ultrasonic vibrator or an electromagnetic vibrator.

[0196] Based on the above-mentioned drain plate 100 , the drainage structure connecting the drain plate 100 and the drain pipe will be described below.

[0197] 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 different sides of the drainage plate 100 (such as two adjacent sides). The first drainage component 260 can be understood as a side drainage structure.

[0198] The first drainage component 260 is provided with a first drainage port 262 , which is communicated with a drainage pipe (the drainage pipe is a first drainage pipe 263 ) to drain the water received by the drainage plate 100 .

[0199] The first drainage component 260 is constructed with a drainage channel, and 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 the drainage can be gathered to the first drainage port 262.

[0200] like Figure 6 and Figure 7 As shown, the first drainage component 260 covers all the openings 170 of the drainage plate 100 as much as possible to ensure that the connection parts of the first drainage component 260, the air duct component 220 and the partition component 210 are 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 components 260 in order to illustrate the positions of the openings 170 . In actual applications, the first drainage components 260 cover all the openings 170 .

[0201] The first drainage component 260 is configured with a through hole communicating with the openings 170 , and the area of ​​the through hole covers all the openings 170 to ensure drainage and sealing effects and avoid water leakage.

[0202] It is understandable 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. Figure 6 and Figure 9 As shown, the first air inlet 201 is provided in the first drainage component 260 as an example for description. 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 return air.

[0203] like Figure 13As shown, the first drain component 260 includes a first wall panel 264 and a second wall panel 265 disposed opposite each other. The first wall panel 264 is provided with a through hole, and the second wall panel 265 is provided with the first air inlet 201. The first wall panel 264 faces the drain board 100, while the second wall panel 265 faces the cabinet 400. The first and second wall panels 264, 265 can be detachably connected or integrally formed. In some cases, the first drain component 260 is constructed as an integral structure to prevent leakage at the joint.

[0204] 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 .

[0205] like Figures 2 to 13 As shown, the opening 170 of the drain plate 100 faces the first side of the first cavity 282, the second cavity 281 is located on the second side of the first cavity 282, and the fan 270 is disposed within the second cavity 281. The first side of the first cavity 282 is adjacent to the second side. 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 drain plate 100 is different from the air outlet direction of the first cavity 282, which can reduce moisture carried in the wind, minimize the impact of drainage on the fan 270, and reduce the amount of frost on the fan 270. In this case, the opening 170 of the drain plate 100 faces at least one of the left and right sides.

[0206] like Figures 5 to 8As shown, the drain plate 100 includes a second water guide 130, which is recessed relative to the top surface of the drain plate 100. The extension direction of the second water guide 130 forms an angle with the air outlet direction above the drain plate 100. The depth of the recess of the second water guide 130 gradually increases along the direction of the first side of the second cavity 281. The end of the second water guide 130 facing the first side of the second cavity 281 is formed with an opening 170. Water received by the second water guide 130 is discharged from the opening 170 along the extension direction of the water guide. The opening 170 is connected to the first drainage component 260 described above, allowing the water to be discharged through the first drain port 262. The drain plate 100 has a simple structure and good drainage performance. Furthermore, return air from the first chamber 410 enters the first cavity 282 through the first air inlet 201. Air entering the first cavity 282 from the left or right side may flow along the second water guide 130. Return air from the second chamber 420 enters the first cavity 282 through the second air inlet 202. Air entering the first cavity 282 from the front side of the air duct assembly 200, the return air from the first chamber 410 and the return air from the second chamber 420 enter the first cavity 282 through different paths. This reduces contact between the two return air paths and also reduces the amount of frost formed due to the contact between the two return air paths.

[0207] 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 part 130 is left and right. Then the angle between the extension direction of the second water guide part 130 and the air outlet direction above the drainage plate 100 is 90°. The second water guide part 130 can slow down the flow speed of the wind in the first cavity 282, extend the time that the wind stays in the first cavity 282, and optimize the heat exchange effect.

[0208] It should be noted that the drain plate 100 includes a second water guide 130 extending from a preset position to the left and a second water guide 130 extending from the preset position to the right. The drain plate 100 has openings 170 facing left and right. 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 effective water diversion. The preset position can be a symmetrical plane of the drain plate 100 or a longitudinal plane extending in the front-to-back direction. The preset surface can be the end surface of the aforementioned drain portion. The preset surfaces of the second water guide extending to the left and right sides of the drain plate can be the same longitudinal plane or different longitudinal planes.

[0209] Different from the above embodiment, Figures 10 to 13 As shown, the drainage plate 100 provided in the air duct assembly 200 is configured with a third water guide portion 140 , and the opening 170 of the third water guide portion 140 is communicated with the first drainage component 260 .

[0210] When fan 270 is located at the rear of duct assembly 200 and first drain member 260 is located on at least one of the left and right sides of duct assembly 200, this drainage method can be understood as side drainage. Since fan 270 is located at the rear of duct assembly 200, evaporator 230 and fan 270 drain water independently. Defrost water from evaporator 230 is drained from both sides via first drain member 260. Defrost water flowing toward the fan and condensed water upon encountering fan 270 can be drained through the structure below fan 270. This structure can be the rear drainage structure described below, or other structures capable of draining water from second cavity 281.

[0211] Different from the drainage method of the first drainage component 260, Figures 10 to 16 As shown, the air duct assembly 200 also includes a fan cover 240, which limits a second cavity 281. The fan 270 is arranged 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.

[0212] In some cases, the fan guard 240 and the fan 270 are both disposed on the rear side of the air duct assembly 200 , and the second drainage component 290 located on the side where the fan is located provides a rear drainage method.

[0213] The fan guard 240 is provided with a second drainage component 290 . The second drainage component 290 is provided inside the fan guard 240 , or the second drainage component 290 is provided below the outside of the fan guard 240 .

[0214] refer to Figures 14 to 16 As shown, when the second drainage component 290 is disposed in the fan cover 240, the space in the fan cover 240 is fully utilized, the height of the air duct assembly 200 can be reduced, and the capacity of the refrigeration equipment can be expanded.

[0215] A fan cover 240 is provided on the side of the drain plate 100 where the outlet 114 is located. The end of the fan cover 240 facing the drain plate 100 is connected to the outlet 114 of the drain plate 100. The fan cover 240 comprises a first cover 241 and a second cover 242 positioned below the first cover 241. A fan 270 is positioned above the second cover 242. The second cover 242 is provided with a third drain port 2423. Water discharged from the outlet 114 of the drain plate 100 flows along the second cover 242 to the third drain port 2423. The second cover 242 receives water discharged from the drain plate 100, water dripping from the first cover 241, and water dripping from the fan 270, and drains defrost water from the first chamber 282, thereby simplifying the structure of the air duct assembly 200. In this case, the drain plate 100 can adopt a structure having a drain portion 110. For details, please refer to the above-mentioned embodiment of the drain plate 100. The outlet 114 of the drain plate 100 faces rearward, and the second cover 242 is located at the rear of the drain plate 100 . The second cover 242 can provide a rear drainage structure.

[0216] The second drainage member 290 defines a first water channel 2421 that communicates with the outlet 114 of the drainage plate 100. The second drainage member 290 includes an upwardly protruding barrier 2422 along the surface of the second cover 242. The barrier 2422 defines the first water channel 2421. The fan 270 is located on one side of the barrier 2422. The barrier 2422 separates the first water channel 2421 from the fan 270, preventing water from flowing toward the fan 270 and minimizing the impact of water on the fan 270.

[0217] The first water channel 2421 is inclined downward, away from the outlet 114 of the drain plate 100, to facilitate downward drainage of the water within the first water channel 2421. This provides a simple structure and excellent drainage. A third drain outlet 2423 is formed at the end of the first water channel 2421. This third drain outlet 2423 is connected to a drain pipe, which drains the water into the press chamber through the drain pipe.

[0218] The barrier portion 2422 can be a plate-like structure or a block-like structure that protrudes upward from the second cover 242, and the specific structure can be selected according to needs. Of course, the barrier portion 2422 can also be a part that is detachably connected to the second cover 242, such as a plate structure that is plugged or clipped into the second cover 242. The structure of the barrier portion 2422 is not limited to this, and other structures that can achieve a barrier function are also possible.

[0219] It should be noted that a partition plate 2427 is provided between the drain plate 100 and the second housing 242. The partition plate 2427 allows the drain plate 100 and the second housing 242 to communicate only at the outlet 114, while separating the other portions thereof. This ensures that the first cavity 282 and the second cavity 281 communicate at the vent 244 and the outlet 114, while remaining separated. The partition plate 2427 can be integrally formed with the second housing 242 or detachably connected.

[0220] The second cover 242 and the drain plate 100 may be two independent components, or the second cover 242 and the drain plate 100 may be integrally formed as a whole component.

[0221] The first air guide portion 2424 and the second air guide portion 2425 are provided inside the fan cover 240. The first air guide portion 2424, the second air guide portion 2425 and the fan 270 cooperate to guide the air to the first air outlet 203 and the second air outlet 204, ensuring that the air flows out from the corresponding paths. Figure 15 As shown, the second cover body 242 is provided with a first air guide portion 2424 and a second air guide portion 2425 .

[0222] The fan 270 is installed on the upper surface of the second cover body 242 through the fan mounting seat 271. A plurality of second mounting columns 2426 are set on the upper surface of the second cover body 242. The fan mounting seat 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.

[0223] In the direction away from the drain plate 100 , that is, toward the third drain port 2423 , the upper surface of the second cover body 242 is inclined downward so that the defrost water on the surface of the second cover body 242 can flow toward the third drain port 2423 under the action of gravity.

[0224] The second housing 242 is configured with a water collection portion 2428. This portion is located on the side of the second housing 242 facing the third drain outlet 2423. The surface area of ​​the water collection portion 2428 gradually decreases toward the third drain outlet 2423 and is in communication with the third drain outlet 2423. Water collected by the water collection portion 2428 can be discharged through the third drain outlet 2423. The surface area of ​​the water collection portion 2428 gradually decreases toward the third drain outlet 2423, meaning that the water collection portion 2428 converges toward the third drain outlet 2423. This facilitates the collection and discharge of defrost water collected by the second housing 242.

[0225] Since the upper surface of the second cover body 242 is tilted downward toward the third drain port 2423 , the water collecting portion 2428 may also be tilted downward for better drainage effect. However, the water collecting portion 2428 is not limited to being tilted downward, and the water collecting portion may be horizontally arranged.

[0226] The second housing 242 is provided with a heating element 226. The heating element 226 heats the second housing 242 to heat and defrost the fan housing 240 and its components, such as the fan 270. The heating element 226 can be a heating film formed on the second housing 242, or a heating plate located below the second housing 242. The structure of the heating element 226 is not limited to this, and other structures capable of achieving heating and defrosting are also acceptable.

[0227] The difference from the above-mentioned second drainage component 290 is that Figure 10 and Figure 11 As shown, the second drainage member 290 can also be located below the fan guard 240. The second drainage member 290 is sealed with the outer surface of the fan guard 240 to form a second water guide channel that communicates with the outlet 114 of the drainage plate 100. The second water guide channel is separated from the second cavity 281. In other words, the second water guide channel is separated from the fan 270 by the fan guard 240, thereby reducing the impact of water in the second water guide channel on components such as the fan 270.

[0228] The second drain component 290 can be configured as a U-shaped structure with a flanged edge, or it can be integrally formed beneath the second cover 242. The second drain component 290 has various configurations, and can be selected as needed. When the drain plate 100 is provided with multiple outlets 114, multiple second drain components 290 can be positioned beneath the fan cover 240, ensuring that the second water channel and the fan 270 do not interfere with each other. Below the duct assembly 200, the corresponding portion of the second drain component 290 protrudes downward, increasing the height of the duct assembly 200 without affecting the height of other portions, thereby expanding the capacity of the refrigeration equipment.

[0229] The second water channel slopes downward, away from the outlet 114 of the drain plate 100, to facilitate downward drainage of water within the second water channel. This provides a simple structure and excellent drainage. The second drain member 290 is provided with a second drain outlet, which is connected to a second drain pipe 291, through which water is drained into the press chamber.

[0230] Of course, the water guide channel (the first water guide channel 2421 or the second water guide channel) can also be set horizontally, which will not increase the height dimension of the air duct assembly 200 due to the water guide channel, helping to reduce the height of the air duct assembly 200 and thereby increase the storage space of the refrigeration equipment.

[0231] The fan cover 240 is provided with wiring holes so that the electrical components of the air duct assembly 200 can be routed through the wiring holes to achieve electrical connection. The structure is simple and wiring is convenient.

[0232] When fan 270 is installed differently from the above-described method, that is, without fan cover 240, the drainage method differs from the above-described first and second drain components 260 and 290. Air duct component 220 supports drain plate 100, which is located below evaporator 230. A water guide 223 is provided on the side of drain plate 100 where outlet 114 is located. One side of water guide 223 faces and communicates with outlet 114. A drainage port is formed on the other side of water guide 223, connecting water guide 223 to a third drain pipe 2231. Water discharged from outlet 114 of drain plate 100 flows along water guide 223 into third drain pipe 2231. Fan 270 is located on one side of evaporator 230, with fan cover 243 located between them. The inlet of fan 270 communicates with first cavity 282 through vent 244 in fan cover 243. The fan cover 243 is disposed outside the water guide 223 and is fixed to the liner body 300. The fan cover 243 and the rear wall of the liner body 300 define a cavity for mounting the fan 270. This cavity communicates with the first cavity 282 via a vent 244 provided in the fan cover 243. Alternatively, the fan cover 243 itself defines a cavity for mounting the fan 270, which communicates with the first cavity 282 and is fixed to the liner body 300. A third cavity is defined between the fan cover 243 and the water guide 223. Air within the first cavity 282 passes through the third cavity and is then directed outward by the fan 270.

[0233] The water guide 223 can be understood as a part of the air duct component 220 or a component independent of the air duct component 220, depending on the needs. 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 guard 240. A fan cover 243 or a fan guard 240 is provided within an air duct assembly 200. The fan cover 243 is used in combination with the water guide 223, and the fan guard 240 is used in combination with the second drainage component 290. When the air duct assembly 200 includes the fan guard 240, a vent 244 is provided on the fan guard 240 so that air within the first cavity 282 can be discharged by the fan 270 through the vent 244.

[0234] The fan cover 243 is provided with a third air guide portion 2431 and a fourth air guide portion 2432 . The fan cover 243 is provided with a first air outlet 203 and a second air outlet 204 so that the fan 270 can send air out of the first air outlet 203 and the second air outlet 204 .

[0235] Next, the fan 270 and the installation method of the fan 270 are described.

[0236] like Figures 5 to 16As shown, the air duct assembly 200 further includes a fan 270, the rotation axis of which forms a first angle α1 with the vertical direction. The fan cover 240 defines a vent 244, with the inlet of the fan 270 facing the vent 244. The second cavity 281 communicates with the air outlet area of ​​the first cavity 282 via the vent 244, and the second cavity 281 communicates with the exhaust port of the air duct assembly 200. Air within the first cavity 282 is drawn into the second cavity 281 by the fan 270 through the vent 244 on the fan cover 240. Under the action of the fan 270, the air within the second cavity 281 is passed through the exhaust port into the first chamber 410 or the second chamber 420. In other words, the second cavity 281 and the aforementioned first and second exhaust ports 203 and 204 can be switched on and off.

[0237] The rotation axis of fan 270 forms a first angle α1 with the vertical direction. This means that the front end of the rotation axis of fan 270 is lower or higher than the rear end. While meeting ventilation and drainage requirements, first angle α1 is as small as possible, and the height difference between the front and rear ends of the rotation axis of fan 270 is as large as possible. In other words, fan 270 is arranged as close to horizontal as possible to reduce the space occupied by fan 270 in the vertical direction, thereby reducing the height dimension of air duct assembly 200.

[0238] At this time, the vent 244 and the drainage outlet of the first cavity 282 are staggered, which can minimize the wind at the drainage outlet being drawn out by the fan 270, extend the heat exchange time of the wind in the first cavity 282, and improve the heat exchange efficiency.

[0239] The fan cover 240 is fixed on the box body 300 , and the wind in the first cavity 282 passes through the second cavity 281 and is then discharged by the fan 270 .

[0240] It will be appreciated that the air duct assembly 200 further includes a fan cover 240, which includes a first cover body 241 and a second cover body 242. The first cover body 241 is configured with a guide surface 2411 facing the fan 270. The first side of the guide surface 2411 is higher than the second side of the guide surface 2411, and the first side and the second side of the guide surface 2411 are opposite each other. The fan cover 240 defines a second cavity 281, within which the fan 270 is disposed. The first cover body 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 of the guide surface 2411. The provision of the first cover body 241 can promote the collection and discharge of water vapor in the second cavity 281, reduce water vapor corrosion on the fan 270, and extend the life of the fan 270.

[0241] The first angle α1 is greater than or equal to 7°, allowing water collected on the first side of the guide surface 2411 to flow along the slope of the guide surface to the second side, where it is directed along the air duct component 220 below the fan 270 to the third drain port 2423. This prevents water collected on the surface of the first cover 241 from dripping into the fan 270 and minimizes the water from entering the fan 270. The first side of the guide surface 2411 is higher than the second side of the guide surface 2411. The surface of the first cover 241 facing the fan 270 can be an inclined plane or a curved surface. A flat guide surface 2411 simplifies the structure of the first cover 241 and facilitates manufacturing. Furthermore, water accumulated on the surface of the fan 270 falls and is discharged under the action of gravity.

[0242] The first angle α1 needs to be less than 70° to reduce the height. The first angle α1 may be less than 60°, 50°, 45°, 30°, 20° or 10°. The smaller the first angle α1 is, the smaller the height dimension of the air duct assembly 200 is.

[0243] It should be noted that when the first angle α1 is less than 7°, exhaust requirements can be met, and the height dimension of the air duct assembly 200 is smaller. However, the surface of the first cover 241 facing the fan 270 does not conduct water well, and the drainage effect is difficult to meet the requirements. If the first angle α1 is less than 7°, the drainage problem of the fan cover 240 needs to be solved.

[0244] In some cases, the first cavity 282 and the second cavity 281 are two cavities arranged side by side in front and back; 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 this, and the two cavities can be connected. Taking the second cavity 281 as an example, the fan 270 can be tilted toward the front by the first angle α1 or toward the rear by the first angle α1, referring to Figure 14 As shown, the fan 270 is tilted toward the front at a first angle α1, referring to Figure 8 As shown, the fan 270 is tilted backward at a first 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 the first angle α1, or tilted backward to form the first angle α1.

[0245] Among them, the fan 270 gradually tilts upward from front to back, that is, the inlet of the fan 270 faces the air outlet direction of the first cavity 282, which helps the wind in the first cavity 282 to enter the inlet of the fan 270, which can improve the ventilation effect. The fan 270 gradually tilts downward from front to back, which can improve space utilization. In the above structure, it can be considered that the evaporator 230 and the fan 270 can share a drainage structure to achieve structural simplification; or, it can be considered that the evaporator 230 and the fan 270 use independent drainage structures for drainage, which can reduce the impact of drainage on the fan 270. Figure 5 、 Figure 6 、 Figure 12 and Figure 13 As shown, the drainage of the evaporator 230 is discharged from the first drainage components 260 on the left and right sides, and the drainage of the fan 270 is discharged from the rear end.

[0246] It will be appreciated that the rotation axis of fan 270 is collinear with the central axis of vent 244. This allows fan 270 to effectively draw air from first cavity 282 into second cavity 281 through vent 244, thereby enhancing the air circulation within duct assembly 200. In some cases, the shape of vent 244 matches the shape of the inlet of fan 270, allowing air from first cavity 282 to be drawn into second cavity 281 through vent 244 by fan 270.

[0247] The rotation axis of the fan 270 is collinear with the central axis of the vent 244. Generally, the air guide surface 2411 of the first housing 241 is positioned parallel to the fan 270, or the area of ​​the first housing 241 corresponding to the fan 270 is positioned parallel to the fan 270. The fan 270 is typically a centrifugal fan, which can change the direction of air flow, facilitating air delivery to the first chamber 410 or the second chamber 420. Of course, other fans 270 that can provide a sufficient circulating air supply may also be used.

[0248] It is understandable that if Figures 4 to 6 As shown, the first cover 241 is located above the fan 270, the first side of the guide surface 2411 is away from the drain board 100, and the second side of the guide surface 2411 is toward the drain board 100. The first side of the guide surface 2411 is tilted upward at a second angle α2 relative to the second side of the guide surface 2411, that is, in a direction away from the drain board 100. The guide surface 2411 of the first cover 241 is tilted upward at a second angle α2, that is, the vent 244 is toward the outlet direction of the first cavity 282, which helps the wind in the first cavity 282 to enter the second cavity 281, which can improve the ventilation effect. It can also be considered that the evaporator 230 and the fan 270 share the drainage structure to achieve structural simplification. Figures 14 to 16 as well as Figure 21As shown, the air duct assembly 200 drains water from the second drain port or the third drain port 2423 at the rear end.

[0249] Combine Figures 12 to 25 As shown, when the drain plate 100 includes a water guide portion and a drainage portion 110, the drainage portion 110 is configured with an outlet 114. The water received by the drain plate 100 flows along the water guide portion to the drainage portion 110 and is discharged from the outlet 114. Affected by this structure, a portion of the wind also flows along the water guide portion and the drainage portion 110 to the outlet 114. By setting the outlet 114 and the vent 244 to be offset, the wind flowing in the direction of the outlet 114 can be prevented from being directly discharged from the vent 244, and the time for the wind to exchange heat in the first cavity 282 can be extended as much as possible, thereby improving the heat exchange efficiency. Among them, when the second cavity 281 is located behind the first cavity 282, the direction away from the drain plate 100 is from front to back. Of course, the first cavity 282 and the second cavity 281 can also be set left and right, and the direction away from the drain plate 100 is the left and right direction. The working principle is consistent with the front and back direction, and will not be repeated here. Combined Figures 1 to 3 Figure 10 Figure 11 as well as Figures 17 to 19 As shown, the second cavity 281 is located behind the first cavity 282 as an example for description.

[0250] refer to Figures 1 to 3 、 Figure 10 、 Figure 11 as well as Figures 17 to 19 As shown, the first cover body 241 is located above the fan 270, the first side of the guide surface 2411 faces the drain board 100, the second side of the guide surface 2411 faces away from the drain board 100, and the second side of the guide surface 2411 is inclined downward by a third angle α3 relative to the first side of the guide surface 2411, that is, in a direction away from the drain board 100. The guide surface 2411 of the first cover body 241 is inclined downward by a third angle α3, and the first cover body 241 guides the water flow toward the rear of the fan 270, which helps to quickly discharge the collected water.

[0251] In some cases, the second angle α2 and the third angle α3 are set to the same angle as the first angle α1, so that the rotation axis of the fan 270 is collinear with the central axis of the vent 244, ensuring the wind flow effect in the duct assembly 200 and the wind circulation effect in the refrigeration equipment.

[0252] The drain plate 100 , the fan cover 240 , the water guide 223 and other components in the above embodiment all need to be supported and insulated by the air duct component 220 . The structure of the air duct component 200 will be described below.

[0253] The air duct component 220 can be fixed to the box body 300 by being fixedly connected to the partition component 210 , or the air duct component 220 can be directly fixedly connected to the box body 300 .

[0254] The air duct component 220 includes a support plate and a second insulation layer 221 arranged below the drainage board 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 board 100, so that the second insulation layer 221 can fully insulate the drainage board 100, reduce the outward diffusion of cold, and ensure heat exchange efficiency.

[0255] When the lower surface of the drain board 100 is a curved surface, such as a wavy surface, the upper surface of the second insulation layer 221 is a corresponding curved surface; when the lower surface of the drain board 100 is a plane, the upper surface of the second insulation layer 221 is a plane, which can be set according to needs.

[0256] Among them, the support plate includes a first support part 222 and a second support part 225 inclined obliquely downward along the first support part 222. The second support part 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 part 222 supports the second insulation layer 221. The third insulation layer 224 is arranged above the second support part 225. The water guide part 223 or the fan cover 240 is arranged above the third insulation layer 224. The second support part 225 plays a role in supporting the third insulation layer 224 and the components above the third insulation layer 224 (such as the water guide part 223 or the fan cover 240).

[0257] The first support portion 222 and the second support portion 225 are independent parts, such as plates, and are assembled using a removable connection method, such as plug-in connection, clip connection, or fasteners. Alternatively, the first support portion 222 and the second support portion 225 can be integrally formed, which can reduce the number of parts and simplify assembly. In some cases, the water guide 223 and the drain plate 100 are two independent parts. Of course, the water guide 223 and the drain plate 100 can also be integrally formed.

[0258] The air duct component 220 may have an air inlet, so that the 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, a second air inlet 202 communicating with the second chamber 420 is opened at the front end of the first support portion 222 , 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 .

[0259] refer to Figures 36 to 38As shown, a first air inlet 201 is provided on a first side of the first cavity 282, and a second air inlet 202 is provided on a second side of the first cavity 282. It can also be understood that, perpendicular to their respective air inlet directions, the cross-sections of the first air inlet 201 and the second air inlet 202 form an angle. The air entering the first air inlet 201 and the air entering the second air inlet 202 have different temperatures.

[0260] The air duct component 220 is provided with a partition 2221, and the orthographic projection of the partition 2221 at the first air inlet 201 covers a local area of ​​the first air inlet 201. The orthographic projection of the partition 2221 at the first air inlet 201 is located at one end of the first air inlet 201 close to the second side. The partition 2221 and the first air inlet 201 are spaced by a preset distance a. The air intake of the first air inlet 201 flows in the direction of the partition 2221. During the flow of wind, part of the wind is guided along the extension direction of the partition 2221, and part of the wind continues to flow along the air intake direction. When the first air inlet 201 and the second air inlet 202 take in air at the same time, the amount of air that crosses the air intake of the first air inlet 201 and the air intake of the second air inlet 202 can be reduced.

[0261] In the first cavity 282, there is a distance between the end of the evaporator 230 facing the second side and the second air inlet 202. Most of the air from the first air inlet 201 and the second air inlet 202 meet at this distance and contact for heat exchange, and then flow along the evaporator 230 to the exhaust port; at the position of this distance, the partition 2221 plays a role in guiding part of the air from the first air inlet 201 to the extension direction of the partition 2221, which can reduce the amount of air that contacts for heat exchange between the air from the first air inlet 201 and the air from the second air inlet 202, and thus reduce the amount of frost at the end of the evaporator 230 close to the second side due to different air inlet temperatures, avoid affecting the air intake of the first cavity 282 due to the large amount of frost on the second side, and solve the problem of short defrost cycle caused by the large amount of frost on the second side, appropriately extend the defrost cycle, and play a role in saving electricity. The partition 2221 is provided so that the air entering the first air inlet 201 and the air entering the second air inlet 202 are kept on both sides of the partition 2221 as much as possible.

[0262] refer to Figure 36As shown, taking the alignment of the first air inlet 201 and the edge of the air duct component 220 as an example, the preset spacing 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 spacing a is set to ensure that there is adequate flow space between the first air inlet 201 and the partition 2221 to facilitate airflow into the first cavity 282 and to prevent the partition 2221 from blocking the portion of the first air inlet 201 it corresponds to. Therefore, the value of the preset spacing a is not limited and can be selected as needed. The orthographic projection can be understood as the projection at the first air inlet 201 along the air inlet direction of the first air inlet 201.

[0263] It should be noted that the air duct component 220 may be formed with a first air inlet 201 (not shown in the figure).

[0264] An evaporator 230 is disposed in the first cavity 282 , and the heat sink 234 of the evaporator 230 extends along the second air inlet 202 toward the air outlet (from front to rear in the drawing), so that the wind at the distance between the evaporator 230 and the second air inlet 202 can flow toward the air outlet along the guide direction of the heat sink 234 .

[0265] The partition 2221 extends along the second air inlet 202 toward the exhaust port, and part of the air from the first air inlet 201 flows into the evaporator 230 along the partition 2221. The partition 2221 and the heat sink 234 extend in the same direction, so the partition 2221 and the heat sink 234 cooperate to guide the wind toward the exhaust port.

[0266] In the direction from the first air inlet 201 toward the partition 2221, the air duct component 220 is provided with a curved guide surface 2222. The partition 2221 is located at and tangent to the first end of the guide surface 2222, and the second end of the guide surface 2222 extends toward the first wall surface that limits 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, it is caused to flow along the curved surface of the guide surface 2222. The flow direction of part of the air is changed by the guide surface 2222, and part of the air flows in the extension direction of the partition 2221, reducing the air flowing in the direction of the first air inlet 201 and thereby reducing the amount of air that is exposed to contact heat exchange between the first air inlet 201 and the second air inlet 202.

[0267] In some cases, the second end of the guide surface 2222 is perpendicular to the first wall surface that defines 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 flows along the guide surface 2222. The specific structure of the guide surface 2222 can be selected as needed.

[0268] 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 the flat portion 22222 and is tangent to the flat portion 22222. The flat portion 22222 extends toward the first wall surface, and the curved portion 22221 serves to change the flow direction of the wind. The flat portion 22222 can guide the wind toward the curved portion 22221. The flat portion 22222 cooperates with the curved portion 22221, and the air intake of the first air inlet 201 is smoother.

[0269] In some cases, the planar portion 22222 extends to connect with the first wall surface. However, a gap may be provided between the planar portion 22222 and the first wall surface, and the specific positional relationship between the planar portion 22222 and the first wall surface is not limited.

[0270] The air duct component 220 is provided with a second air inlet portion, which constructs a second air inlet 202. Partitions 2221 are provided at both ends of the second air inlet portion. The first side includes two side surfaces adjacent to the second side, that is, the 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 portion, part of the air intake of the corresponding first air inlet 201 can be separated respectively. The structure is simple and the symmetry is good.

[0271] The air duct component 220 is provided with a guide plate 2223, which 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 remains at a preset height position, ensuring the corresponding relationship between the incoming air of the first air inlet 201 and the partition 2221. At the same time, the incoming air of the first air inlet 201 can also flow along the guide plate 2223 toward the exhaust port.

[0272] 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 separates part of the air inlet 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.

[0273] The length of the partition 2221 is less than or equal to 1 / 3 of the length of the first air inlet 201. This allows the partition 2221 to partially separate the air intake along the length direction, minimizing the impact on the air intake effect of the first air inlet 201 and ensuring 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 toward the evaporator 230.

[0274] The duct component 220 is integrally formed with a divider 2221. This eliminates the need for separate processing and installation, simplifying the assembly process of the duct assembly 200 and saving assembly time. Alternatively, the duct component 220 can be detachably connected to the divider 2221. The structure and shape of the divider 2221 can be selected or changed based on actual needs, making the structure of the duct assembly 200 more flexible and diverse.

[0275] The air duct component 220 includes a support member and an insulation layer. The support member supports the insulation layer and the components thereon, and is provided with a second air inlet 202. In some cases, the partition 2221 is integrally formed with or detachably connected to the support member. In this case, the guide surface 2222 is also part of the surface of the support member. Of course, the partition 2221 may also be integrally formed with or detachably connected to the insulation layer.

[0276] The above-mentioned embodiments of the partition 2221 and the embodiments of the guide surface 2222 and the guide plate 2223 related to the partition 2221 can also be set on the partition component 210, and at least one of the partition component 210 and the air duct component 220 has the above-mentioned functions.

[0277] Based on the above description of the drain board 100, the air duct component 220 can support the drain board 100 of the aforementioned embodiment. The air duct component 220 includes a support plate and an insulation layer located above the support plate. The support plate includes the aforementioned first support portion 222 and second support portion 225. The insulation layer includes the aforementioned second insulation layer 221 and third insulation layer 224. The second insulation layer 221 is located above the first support portion 222, and the drain board 100 is located above the second insulation layer 221.

[0278] refer to Figures 20 to 25 As shown, the structure of the drain board 100 includes a drain portion 110 and a water guide portion. The drain portion 110 is configured with an outlet 114 and is recessed relative to the top surface of the drain board 100. The water guide portion is connected to the drain portion 110 and is recessed relative to the top surface of the drain board 100. The extension direction of the water guide portion forms a fifth angle with the air outlet direction above the drain board 100. The bottom of the water guide portion is inclined along a first direction toward the drain portion 110, and the first direction forms a sixth angle θ2 with the top surface of the drain board 100. The water guide portion here can be understood as the first water guide portion 120 in the above-mentioned embodiment.

[0279] 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 corresponding corrugated surface. The shape of the lower surface of the second insulation layer 221 can be set as needed, such as a plane extending in the horizontal direction, so that the lower surface of the duct component 220 can also be configured as a plane extending in the horizontal direction. The lower surface shape of the duct assembly 200 is regular and the appearance structure is simple.

[0280] refer to Figure 37 As shown, the lower surface of the second thermal insulation layer 221 is constructed with a first supporting slope inclined along the first direction, and the first supporting portion 222 is constructed with a second supporting slope 2224 adapted to the first supporting slope. The first supporting slope and the second supporting slope 2224 are easy to process and can reduce the thickness of the air duct assembly 200.

[0281] The second insulation layer 221 is also constructed with a first support groove adapted to the drainage portion 110, and the first support portion 222 is constructed with a second support groove 2225 adapted to the first support groove. The rear end opening 170 of the second support groove 2225 is connected to the drainage structure to facilitate the discharge of the defrost water received by the drainage plate 100.

[0282] Next, the evaporator 230 above the drain plate 100 will be described.

[0283] refer to Figures 18 to 20 As shown, the evaporator 230 is placed horizontally in the first cavity 282 of the air duct assembly 200, and the drain plate 100 is placed below the evaporator 230 to receive the defrost water. 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 drainage plate 100, but the structure of the evaporator 230 is not shown in the figure.

[0284] The evaporator 230 is placed horizontally, which can be understood as the height of the evaporator 230 being smaller than its length and width.

[0285] The drain plate 100 is located below the evaporator 230. The drain plate 100 is provided with a water guide portion that is recessed relative to the top surface. The angle between the evaporator 230 and the horizontal plane is less than or equal to a preset angle.

[0286] The angle between the evaporator 230 and the horizontal plane is less than or equal to a preset angle. This means that the end of the evaporator 230 facing the air outlet is lower than the end of the evaporator 230 facing the air inlet, and the line connecting the end of the evaporator 230 facing the air outlet and the end of the evaporator 230 facing the air inlet forms a preset angle with the horizontal plane. This line can be located on the bottom surface or the symmetric plane in the height direction of the evaporator 230. When the evaporator 230 is in the shape of a rectangular parallelepiped, both the bottom surface and the symmetric plane of the evaporator 230 form a preset angle with the horizontal direction.

[0287] 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° in order to reduce the height of the air duct assembly 200. If the height of the air duct assembly 200 is not strictly limited, the preset angle can be appropriately increased.

[0288] Alternatively, the drain plate 100 is provided with a water guide portion that is recessed relative to the top surface, and the evaporator 230 can be horizontally arranged in the first cavity 282. In this case, the height of the air duct assembly 200 can be fully reduced.

[0289] The angle formed by the evaporator 230 and the horizontal plane is less than or equal to a preset angle, so as to reduce the height space occupied by the evaporator 230, reduce the overall height of the air duct assembly 200, and achieve the purpose of expanding the capacity of the refrigeration equipment.

[0290] Among them, combined Figures 3 to 14 The drainage plate 100 structure shown has a preset 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.

[0291] It can be understood that the evaporator 230 can be installed horizontally above the drainage plate 100. It can be understood that the bottom surface of the evaporator 230 is parallel to the horizontal plane. Compared with the case where the evaporator 230 is tilted, the height of the installation space required for the horizontally set evaporator 230 becomes smaller, and the height dimension of the air duct assembly 200 can be reduced accordingly, and then the space occupied by the air duct assembly 200 in the box body 300 becomes smaller. When the external dimensions of the box body 300 remain unchanged, the capacity of the box body 300 can be effectively increased to provide a large-capacity refrigeration equipment.

[0292] 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.

[0293] It is understood 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 horizontally positioned, and the top surface of the drain plate 100 is positioned below the evaporator 230. When the bottom surface of the evaporator 230 is parallel to or in contact with the top surface of the drain plate 100, the gap between the evaporator 230 and the drain plate 100 becomes smaller, preventing the air in the first cavity 282 from flowing directly from the gap between the evaporator 230 and the drain plate 100 to the vent 244, thereby facilitating sufficient heat exchange within the first cavity 282.

[0294] It should be noted that the gap between the evaporator 230 and the drain plate 100 should be minimized as much as possible, the speed of the wind flowing from the gap between the evaporator 230 and the drain plate 100 to the vent 244 should be slowed down, and the time the wind stays in the first cavity 282 should be extended so that the wind can fully exchange heat with the evaporator 230 in the first cavity 282 and then flow out, thereby ensuring heat exchange efficiency.

[0295] 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, providing a cooling environment for the wind in the first cavity 282.

[0296] The structure of the evaporator 230 will be described below. It should be noted that, although the evaporator 230 is described as being installed in an air duct assembly, the evaporator 230 is not limited to being used in the air duct assembly 200 and can also be installed in other applicable environments.

[0297] 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 constructed with a ventilation portion 23421 for the air intake of the first air inlet 201 to pass through, so that the air intake of the first air inlet 201 can flow through the ventilation portion 23421 to the interior of the evaporator 230, so that the air intake of the first air inlet 201 can fully exchange heat.

[0298] It should be noted that, some of the heat sinks 234 may be provided with the ventilation portions 23421 , or all of the heat sinks 234 may be provided with the ventilation portions 23421 , and the specific selection can be made according to actual needs.

[0299] The following description will be made by taking an example where a portion of the heat sink 234 is provided with a ventilation portion 23421 .

[0300] The evaporator 230 includes a heat exchange tube 233, a first heat sink 2341 and a second heat sink 2342. The first heat sink 2341 and the second heat sink 2342 are both connected to the heat exchange tube 233. Multiple first heat sinks 2341 are arranged in parallel to form a first heat dissipation portion. The second heat sink 2342 is arranged on at least one side of the first heat dissipation portion (when the evaporator is installed in the air duct assembly, the second heat sink 2342 is arranged between the first heat sink 2341 and the first air inlet 201). The second heat sink 2342 is constructed with a ventilation portion 23421 for the air intake of the first air inlet 201 to pass through, so that part of the air intake of the first air inlet 201 is diverted to the inside of the evaporator 230 through the ventilation portion 23421, thereby reducing the amount of air exchanged due to cross-contact between the air intake of the first air inlet 201 and the air intake of the second air inlet 202, and reducing frost condensed due to the contact and heat exchange between the air intake of the first air inlet 201 and the air intake of the second air inlet 202.

[0301] The airflow from 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. It is only necessary to replace part of the heat sink 234 with the second heat sink 2342 with the ventilation part 23421. The structure is simple and the diversion effect of the airflow is better.

[0302] The second heat sink 2342 is located on at least one side of the first heat sink 2341. Specifically, if the first air inlet 201 is located on one side of the duct assembly 200, the second heat sink 2342 is located on the corresponding side. If the first air inlet 201 is located on both opposing sides of the duct assembly 200, 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.

[0303] The number of second heat sinks 2342 can be set as needed, and one or more second heat sinks 2342 can be provided. When only one second heat sink 2342 is provided, part of the air entering the first air inlet 201 flows through the ventilation portion 23421 to the space between the second heat sink 2342 and the first heat sink 2341, and flows toward 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 provided, air passes through the ventilation portions 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, toward the exhaust port. This provides a larger air flow space and improved fluidity.

[0304] The ventilation portions 23421 of adjacent second heat sinks 2342 are connected in a straight line, that is, among two adjacent second heat sinks 2342, the orthographic projection of the ventilation portion 23421 of one second heat sink 2342 covers the orthographic projection of the ventilation portion 23421 of the other second heat sink 2342, so that part of the wind can smoothly pass through the ventilation portion 23421 and flow toward the first heat sink 2341.

[0305] The ventilation portions 23421 of adjacent second heat sinks 2342 are staggered and connected, that is, among two adjacent second heat sinks 2342, the orthographic projection of the ventilation portion 23421 of one second heat sink 2342 covers part 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 part of the wind can flow along the extension direction of the second heat sink 2342.

[0306] Among them, two adjacent second heat sinks 2342 can have straight-through ventilation parts 23421 and staggered-connected ventilation parts 23421, which makes the structure more diverse.

[0307] When multiple second heat sinks 2342 are provided, the cross-sectional area of ​​the ventilation portion 23421 may gradually decrease from the outside of the evaporator 230 toward the first heat sink 2341, and the amount of air entering through the ventilation portion 23421 toward the first heat sink 2341 is reduced. The reduction in the cross-sectional area of ​​the ventilation portion 23421 has little effect on the fluidity of the wind, and can also ensure the heat dissipation area of ​​the second heat sink 2342.

[0308] The ventilation portion 23421 includes at least one of a closed-loop through hole and a through hole with an opening. The ventilation portion 23421 has a diverse structure and is easy to process.

[0309] The shape of the ventilation portion 23421 is at least one of a rectangle, a circle, an ellipse, a trapezoid, and a triangle. The shape of the ventilation portion 23421 is diverse and the structure is simple.

[0310] Among them, the shape of the ventilation part 23421 is at least one of a closed rectangle, circle, ellipse, trapezoid and triangle, or the shape of the ventilation part 23421 is at least one of a rectangle, circle, ellipse, trapezoid and triangle with an opening, such as a rectangle with one end open, a circle with a notch, an ellipse with a notch, etc.

[0311] Of course, the shape of the ventilation portion 23421 is not limited to the aforementioned shape, and the specific shape of the ventilation portion 23421 can be set as needed.

[0312] A first air inlet 201 is set on both sides of the evaporator 230, and multiple first heat sinks 2341 are arranged in parallel to form a first heat dissipation part. Second heat sinks 2342 are symmetrically arranged on both sides of the first heat dissipation part. The evaporator 230 is provided with ventilation parts 23421 at the positions corresponding to the two first air inlets 201 to ensure that part of the air entering the two first air inlets 201 can be diverted through the ventilation parts 23421.

[0313] 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 , and the return air components 430 are connected to the first air inlet 201 to achieve air intake on both sides of the air duct assembly 200 .

[0314] The first heat sink 2341 and the second heat sink 2342 are arranged above the drain plate 100 to receive the defrost water of the evaporator 230 through the drain plate 100. The structure is simple and the installation of the evaporator 230 is convenient.

[0315] The evaporator 230 may also be provided with a gravity sensor to obtain the weight change of the evaporator 230 through the gravity sensor to determine whether the evaporator 230 needs to be defrosted based on the weight change. The evaporator 230 may also be provided with a vibrator to provide a vibration force to assist in defrosting.

[0316] The heating structure inside the air duct assembly 200 for defrosting will be described below.

[0317] like Figure 20 As shown, in some cases, a first heater 231 is disposed above the drain plate 100, that is, the first heater 231 is disposed between the drain plate 100 and the evaporator 230. When the evaporator 230 needs to defrost, the first heater 231 is turned on, and the heat generated by the first heater 231 is used to heat the frost attached to the surface of the evaporator 230. In some cases, the heat sink 234 of the evaporator 230 is provided with a snap-fitting groove for mounting the first heater 231. The first heater 231 is secured to the heat sink 234 via the snap-fitting groove. The snap-fitting groove can be disposed 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 first heater 231 is easily installed and has a good defrosting effect.

[0318] Of course, the defrosting heating structure 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 plugged into the heat sink 234 of the evaporator 230. This plug-in structure is simple and easy to install, which helps improve installation efficiency. The heat sink 234 has a mounting hole 2343, and the second heater 232 is plugged into the mounting hole 2343, which is simple in structure and easy to assemble and disassemble.

[0319] The second heater 232 extends from the first end to the second end of the evaporator 230, and the first end and the second end are opposite ends to fully provide heat for the evaporator 230. The second end and the first end here 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.

[0320] The second heater 232 can be inserted between the two rows of heat exchange tubes 233 to uniformly heat and defrost the upper and lower rows of heat exchange tubes 233. At this time, the heat exchange efficiency between the second heater 232 and the heat exchange tubes 233 and the second heater 232 and the heat sinks 234 on the heat exchange tubes 233 is higher, and the heating and defrosting efficiency can also be improved.

[0321] The second heaters 232 are distributed in multiple layers along the height direction of the evaporator 230 to heat multiple locations of the evaporator 230 .

[0322] The second heater 232 includes a plurality of fixedly connected heating elements, which are fixedly connected as a whole and directly plugged into the heat sink 234 during the assembly process, which makes assembly simple and efficient.

[0323] The second heater 232 includes a plurality of independent heating elements. The positions of the heating elements are flexible, and the heating elements can be replaced independently. The heating elements can also be easily assembled and disassembled.

[0324] When the second heater 232 includes a plurality of independent heating elements, the heating elements may be staggered and distributed along the height direction of the evaporator 230 , thereby reducing the number of heating elements and fully defrosting the evaporator 230 .

[0325] When the heating structure is not set 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, slow down the wind speed, and improve the heat exchange efficiency.

[0326] The heating structure can be set as a heating element 160, which is attached to the surface of the drain board 100. The heating element 160 can be integrated with the drain board 100 into an integrated structure. The drain board 100 with the heating element 160 can be installed under an evaporator 230 of various structures. This drain board 100 can not only receive and discharge defrost water, but also heat and defrost. The drain board 100 has dual functions. This drain board 100 is installed in the air duct assembly 200, which can reduce the height of the air duct assembly 200.

[0327] It should be noted that the drain plate 100 with the heating element 160 can be installed below the horizontal evaporator 230. Alternatively, the drain plate 100 with the heating element 160 can be set below the evaporator 230 installed vertically in the cabinet 400. The application scenario of the drain plate 100 is not limited here.

[0328] The heating element 160 can be integrally formed with the drain plate 100 of any of the above embodiments. Alternatively, the heating element 160 can be integrally formed with another drain plate 100 that can receive and discharge defrost water, so that the drain plate 100 can be widely used in various occasions.

[0329] 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 receive defrost water. The heating element 160 located on the lower surface of the drain plate 100 can avoid direct contact with water, thereby avoiding leakage accidents due to circuit failure, and improving the safety performance of the refrigeration equipment.

[0330] Of course, the heating element 160 can also be covered on the upper surface of the drain plate 100 while ensuring the waterproof performance of the heating element 160 .

[0331] The heating element 160 may be a heating wire or a heating film provided on the surface of the drainage board 100 .

[0332] The following description will be made by taking the heating element as a heating film as an example.

[0333] The heating element 160 comprises an insulating layer and a composite heating layer disposed beneath the insulating layer. The insulating layer is connected to the bottom surface of the drain board 100. The insulating layer provides insulation between the drain board 100 and the composite heating layer, reducing the risk of electrical leakage. The material of the drain board 100 is not limited; steel can be used for this purpose, which is easy to manufacture and ensures good thermal conductivity.

[0334] The heating element 160 includes a composite heating layer. The drain board 100 is an insulating and heat-conducting structure. The composite heating layer is disposed on the lower surface of the drain board 100. Since the drain board 100 has both heat-conducting and insulating functions, the insulating layer can be omitted, making the processing of the drain board 100 simpler and helping to improve production efficiency. The drain board 100 can be a composite structure of ceramic and glass fiber materials.

[0335] The composite heating layer of heating element 160 can be a graphene heating layer, a nano-heating layer, a carbon fiber heating layer, or a composite heating layer made of a variety of electric heating materials. When the composite heating layer is energized, it converts electrical energy into thermal energy for heating element 160, providing heat for defrosting. For example, a graphene heating layer is a planar thin film composed of carbon atoms in a hexagonal honeycomb lattice, and is only one atom thick. This allows the thickness of heating element 160 to be controlled.

[0336] It should be noted that when the heating element 160 is disposed on the lower surface of the drain board 100, an insulating layer should also be provided below the composite heating layer to reduce heat diffusion downward and ensure thermal efficiency. A thermally conductive adhesive layer is used to bond the composite heating layer to the insulating layer, the composite heating layer to the drain board 100, and the insulating layer to the composite heating layer. This layer not only achieves thermal conductivity but also ensures a reliable connection between the layers.

[0337] 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 positions, which can achieve rapid and sufficient defrosting and reduce power consumption.

[0338] When a composite heating layer utilizes a graphene heating layer, the grid distribution of the graphene heating layer in different heating zones is different, resulting in different resistance distributions of the graphene heating layer in different heating zones. The lower surface of the drain plate 100 can be distributed with two graphene heating layers of different resistances. Of course, any number of graphene heating layers of different resistances can also be distributed. Furthermore, graphene heating layers of different resistances can be connected in series or in parallel, or connected to different circuits.

[0339] The heating element 160 in the above embodiment is applied to the above-mentioned air duct assembly 200 and is used for defrosting the evaporator 230, which can reduce the space occupied by the heater, reduce the height of the air duct assembly 200, and further reduce the volume of the air duct assembly 200. The refrigeration equipment with such an air duct assembly 200 can appropriately increase the storage space, thereby expanding the capacity of the refrigeration equipment.

[0340] The drain plate 100 having the heating element 160 in the above embodiment may be used in combination with at least one of the first heater 231 and the second heater 232 to improve the defrosting efficiency.

[0341] It should be noted that the above-mentioned heating element 160 can be applied to the drain board 100 of the above-mentioned embodiment, but is not limited thereto. The heating element 160 can also be applied to drain boards of other structures.

[0342] The above-mentioned heating structure for defrosting needs to be electrically connected to the power supply outside the air duct assembly 200 through a wire. The wire can be routed through the wiring hole opened in the above-mentioned fan cover 240. The structure is simple and easy to assemble.

[0343] Next, the structure of the partition member 210 will be described.

[0344] The partition member 210 and the air duct member 220 define a first cavity 282, an air inlet, and an air outlet. The evaporator 230 and the drain plate 100 are disposed within the first cavity 282. Air entering the air inlet exchanges heat within the first cavity 282 and is then discharged through the air outlet. The air outlet then delivers air into the compartment, providing a cooling environment for the refrigeration equipment. When the air inlet includes the first air inlet 201 and the second air inlet 202, the first air inlet 201 and the second air inlet 202 receive air at different temperatures.

[0345] The partition member 210 can be fixedly connected to the box body 300, for example, the edge of the partition member 210 is fixed to the box body 300 by welding, clamping or fasteners. Figure 6 and Figure 20 As shown, the partition component 210 includes a first plate body 211 and a second plate body 212. The first plate body 211 and the second plate body 212 are provided with a first insulation layer 213. The first insulation layer 213 is detachably arranged between the first plate body 211 and the second plate body 212, or the first insulation layer 213 and the first plate body 211 and the second plate body 212 are integrally foamed.

[0346] 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 box body 300 first. The first insulation layer 213 and the insulation layer of the cabinet body 400 are integrally foamed, and the sealing performance between the partition member 210 and the box body 300 is better, thereby preventing wind from flowing between the first chamber 410 and the second chamber 420.

[0347] refer to Figure 6 and Figure 20 As shown, the partition member 210 further 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 portion defining the installation space can be referred to as a mounting portion. The third plate 214 is located in front of the duct assembly 200. The installation space is located in front of the partition member 210 and is used to install functional components such as a controller, a lighting module, an interactive module, and a display module. When the second air inlet 202 is positioned in front of the duct assembly 200, the portion defining the installation space (the mounting portion) of the partition member 210 is located in front of the second air inlet 202. This portion (the mounting portion) serves to cover the second air inlet 202 at the front, concealing it. The lower portion of the second air inlet 202 communicates with the second chamber 420.

[0348] It should be noted that the second air inlet 202 is not limited to be arranged at the front side of the air duct assembly 200 , and the second air inlet 202 can also be arranged at a front position on the lower side of the air duct assembly 200 .

[0349] refer to Figures 26 to 28 As shown, the partition member 210 and the air duct member 220 limit the first cavity 282, the first air inlet 201, the second air inlet 202 and the air outlet, and the first air inlet 201 and the second air inlet 202 include air inlets of different temperatures; the first air inlet 201 is located on the first side of the air duct assembly 200, and the second air inlet 202 is located on the second side of the air duct assembly 200, and the first side is adjacent to the second side, or the first air inlet 201 and the second air inlet 202 are located on the same side; the partition member 210 is constructed with an inner concave portion that is concave toward the inner side of the partition member 210, and the inner concave portion is suitable for guiding the first air inlet 201 and the second air inlet 202 At least one of the air intakes is diverted to the inner recess, that is, at least one of the first air inlet 201 and the second air inlet 202 is diverted to the inner recess corresponding to each other, so as to reduce the cross-contact air volume in the air intakes 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 intakes, and thereby extend the time interval between two defrosts, reduce the number of defrosts, and reduce the power consumption of defrost.

[0350] Taking the example of a case where the first air inlet 201 and the second air inlet 202 are located on different sides and have intersecting air inlet directions, during the air intake process, a portion of the air from the first air inlet 201 is directed along the extension direction of the corresponding inner recess, while a portion continues to flow in the air inlet direction. When the first air inlet 201 and the second air inlet 202 are simultaneously intake air, the air that continues to flow in the air inlet direction intersects with the air from the second air inlet 202, thereby reducing the amount of air that crosses the air from the first air inlet 201 and the second air inlet 202. The principle of providing an inner recess in the corresponding area of ​​the second air inlet 202 is the same and will not be further described here.

[0351] Taking the example where the first air inlet 201 and the second air inlet 202 are located on the same side (such as both are located on the front side) and have the same air inlet direction, the extension direction of the inner recess is consistent with the extension direction of the corresponding air inlet, and part of the air entering the first air inlet 201 flows along the extension direction of the corresponding inner recess, and the other part of the air entering the first air inlet 201 continues to flow along its flow direction.

[0352] refer to Figure 26 As shown, the recessed portion includes a first recessed portion 2121, which extends a first preset length L2 along the second side of the partition part 210 to the third side with a first preset width L1, the second air inlet 202 is located on the second side, the third side is a side not adjacent to the second side, and 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 part 210, and the first air inlet 201 is located on the first side.

[0353] A portion of the incoming air entering the first cavity 282 from the first air inlet 201 flows along the air inlet direction of the first air inlet 201 and crosses with the incoming air from the second air inlet 202, and the other portion flows along the extension direction of the first inner recess 2121. The first inner recess 2121 plays a role in guiding and diverting, so as to reduce the amount of air at the intersection of the incoming air from the first air inlet 201 and the incoming air from the second air inlet 202, thereby reducing the amount of frost.

[0354] Among them, the first preset width L1 can be set to be less than or equal to the minimum distance from the first air inlet 201 to 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.

[0355] refer to Figure 26 As shown, the first inner recess 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 wind toward the exhaust port to avoid wind accumulation in the groove limited by the first inner recess 2121, thereby ensuring the circulation effect of the wind.

[0356] When the first side of the first cavity 282 includes two or more side surfaces, such as the first side is set to a left side and a right side relative to each other, the first air inlet 201 is set on the left and right sides of the air duct assembly 200, and the first inner recesses 2121 are symmetrically provided on both sides of the partition part 210, and each first inner recess 2121 corresponds to a first air inlet 201, ensuring that the air entering each first air inlet 201 is partially diverted through the first inner recess 2121.

[0357] The first guide surface 2122 can be arranged on the rear side, left side or right side of the first inner recess 2121. Figure 26 As shown, one first guide surface 2122 is located at the rear side of the first inner recess 2121 , and the other first guide surface 2122 is located at the left side of the first inner recess 2121 . Figure 26 In order to illustrate the first guiding surfaces 2122 at different positions, in actual applications, the two first inner recesses 2121 are generally symmetrically arranged.

[0358] refer to Figure 27 and Figure 28As shown, the inner recess includes a second inner recess 2124, and one side of the second inner recess 2124 faces the second air inlet 202, so that the second inner recess 2124 can guide part of the incoming air of the second air inlet 202 to flow along the groove restricted by the second inner recess 2124. The second air inlet 202 also diverts part of the incoming air, which can reduce the amount of air at the intersection of the incoming air of the first air inlet 201 and the incoming air of the second air inlet 202, and can also reduce the amount of frost.

[0359] The second inner recess 2124 extends from the second side of the partition member 210 to the third side by a second predetermined length L4, with a second predetermined width L3. The second predetermined length L4 is less than the length of the evaporator 230 within the first cavity 282. The length of the evaporator 230 is the length from the second side to the third side. The second and third sides herein refer to the above explanations. The length of the second inner recess 2124 is less than the length of the evaporator 230, preventing air within the first inner recess 2121 from flowing directly toward the exhaust port. This ensures that the air within the first inner recess 2121 exchanges heat with the evaporator 230 before being discharged through the exhaust port.

[0360] The second inner recess 2124 is constructed with 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. The second guide surface 2125 is toward the side where the exhaust port is located. The wind is guided downward by the inclined surface of the second guide surface 2125 so that the wind can flow fully to the evaporator 230.

[0361] In some cases, the first inner recess 2121 and the second inner recess 2124 can be used in combination, that is, the partition part 210 is provided with the first inner recess 2121 and the second inner recess 2124 at the same time. At this time, the second inner recess 2124 and the first inner recess 2121 are separated by the third wall panel 215. The recess depths of the first inner recess 2121 and the second inner recess 2124 are the same, and the structure is simple and easy to process.

[0362] When the partition part 210 is provided with the first inner recess 2121 and the second inner recess 2124 at the same time, the first preset length L2 is greater than or equal to the second preset length L4, the first inner recess 2121 fully guides the incoming air of the first air inlet 201 in the direction of the exhaust port, and the second inner recess 2124 guides the incoming air of the second air inlet 202 in the direction of the exhaust port, and can also ensure the heat exchange effect between the wind and the evaporator 230.

[0363] It should be noted that the wind in the second inner recess 2124 may also include wind obtained by combining and mixing the wind from the first air inlet 201 and the wind from the second air inlet 202 .

[0364] 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 of the second air inlet 202 to the side of the exhaust port. The heat sink 234 can guide the air to flow from the side of the air inlet to the side of the exhaust port.

[0365] The heat sink 234 is configured with a protrusion, which extends into the second inner recess 2124 to ensure that the wind in the second inner recess 2124 can fully exchange heat with the heat sink 234.

[0366] refer to Figure 29 As shown, the partition part 210 is constructed with a third inner recess 2127, one side of the third inner recess 2127 faces the first air inlet 201, and the other side of the third inner recess 2127 faces the second air inlet 202. The first air inlet 201 and the second air inlet 202 are located on two adjacent sides, so that the third inner recess 2127 is located in the intersection area corresponding to the first air inlet 201 and the second air inlet 202. The third inner recess 2127 increases the space of the air inlet intersection area between the first air inlet 201 and the second air inlet 202, increases the frost holding space, extends the time that air can enter the end where the air inlet is located, reduces the number of defrosting times, can extend the defrosting cycle, and saves defrosting power consumption.

[0367] The first air inlet 201 and the second air inlet 202 are located on two adjacent sides. 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 at 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.

[0368] 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 inner recess 2127 can provide a larger intersection space for the air entering the first air inlet 201 and the air entering the second air inlet 202. The first air inlet 201 and the second air inlet 202 can also be located on opposite sides, and the distance between the first air inlet 201 and the second air inlet 202 can be increased to appropriately reduce the air volume of cross heat exchange.

[0369] The third inner recess 2127 extends a third preset length L6 along the side of the second air inlet 202 to the side of the exhaust port with a third preset width L5. 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 of the second air inlet 202 to the side of the exhaust port.

[0370] refer to Figure 29As shown, the width direction of the third inner 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.

[0371] The third inner recess 2127 is configured with a third top surface 2128 and a third guide surface 2129 connected to the third top surface 2128. The third guide surface 2129 is inclined downward away from the third top surface 2128 and faces the exhaust port. The third guide surface 2129 directs the air within the third inner recess 2127 toward the evaporator 230 so that the air can be fully heat-exchanged and then discharged.

[0372] Based on the above embodiments of the drain plate 100, fan cover 240, fan 270, duct component 220, defrosting heating structure and partition component 210, the following structure of the duct assembly 200 is proposed, but the duct assembly 200 is not limited to the following structure.

[0373] Combine Figures 1 to 13 As 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 construct a first cavity 282, an air inlet and an air outlet that are connected to each other. The air inlet is divided into a first air inlet 201 and a second air inlet 202. A drain board 100 is arranged in the first cavity 282. The drain board 100 is constructed with a water guide portion that is recessed downward relative to the top surface of the drain board 100. The water guide portion extends to both sides of the preset surface to the edge of the drain board 100 so that an opening 170 is formed at the edge of the drain board 100. 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 for passing through the opening 170 and flowing into the first cavity 282 along the extension direction of the water guide portion. Part of the air intake from the first air inlet 201 passes through the opening 170 and is introduced into the first cavity 282 along the extension direction of the water guide portion, so that part of the air intake from the first air inlet 201 can be diverted, reducing the amount of air that cross-contacts with the air intake from the second air inlet 202, thereby reducing the frost condensed due to the cross-contact between the air intake from the first air inlet 201 and the air intake from the second air inlet 202, reducing the number of defrosting times, extending the defrosting cycle, reducing the power consumption required for defrosting, and reducing the power consumption of the refrigeration equipment.

[0374] The water guide is Figures 1 to 13 At least one structure shown in , that is, the water guide portion can be at least one of the second water guide portion 130 and the third water guide portion 140 .

[0375] It is understood that the air duct assembly 200 further includes a first drainage component 260 located on the first side, the first drainage component 260 is connected to the opening 170 of the drainage plate 100, and the first drainage component 260 is configured with a drainage port. The first drainage component 260 has both drainage and air intake functions.

[0376] It will be appreciated that the air duct assembly 200 further includes a fan cover 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 cover 240 defines a vent 244, with the inlet of the fan 270 facing the vent 244. The fan 270 is disposed horizontally within the fan cover 240, which reduces the height of the fan 270 and, in turn, the height of the air duct assembly 200, facilitating installation of a drawer below the air duct assembly 200.

[0377] It can be understood that the evaporator 230 is arranged in the first cavity 282, the drainage plate 100 is located below the evaporator 230, the angle between the evaporator 230 and the horizontal direction is less than or equal to the preset angle, or the evaporator 230 is parallel to the horizontal direction, the evaporator 230 is placed horizontally, 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, which helps to increase the space of the refrigeration equipment.

[0378] Components such as 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 can all adopt the structures of the above embodiments and will not be repeated here.

[0379] Combine Figures 10 to 25As 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 and the air duct component 220 construct a first cavity 282, a first air inlet 201, a second air inlet 202 and an air outlet that are connected to each other. The first air inlet 201 is located on a first side of the first cavity 282, and the second air inlet 202 is located on a second side of the first cavity 282, with the first side adjacent to the second side. The evaporator 230 is provided in the first cavity 282. The drain plate 100 is located in the first cavity 282. The drain plate 100 is located below the evaporator 230 and is constructed with respect to the drain plate 100. The top surface of the water guide and drain portion 110 is recessed downward. The drain portion 110 is configured with an outlet 114 and communicates with the water guide. The extension direction of the drain portion 110 forms a fifth angle with the extension direction of the water guide. The end of the water guide is configured with an opening 170, and the opening 170 faces the first air inlet 201, so that the air from the first air inlet 201 is suitable for flowing into the first cavity 282 along the extension direction of the water guide. The water guide serves to guide the air entering the first air inlet 201, causing a portion of the air entering the first air inlet 201 to flow along the water guide into the first cavity 282, thereby reducing the amount of air that cross-contacts the air entering the first air inlet 201 and the second air inlet 202, reducing frost condensation due to the contact of air with different temperatures, thereby extending the defrost interval, reducing the number of defrosts, and saving power consumption for defrosting, thereby achieving a power and energy saving effect.

[0380] In this case, the structure of the water guide portion may be the third water guide portion 140 .

[0381] 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 defrost water flowing to the outlet 114 of the drain plate 100 can defrost the fan 270 on the same side.

[0382] It is understood that the top surface of the drain plate 100 and the bottom surface of the evaporator 230 are both inclined downward at a predetermined 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 angle can be less than or equal to 7 degrees or horizontal. This reduces the height space occupied by the evaporator 230, and the height of the air duct assembly 200 is also reduced, which helps to increase the space of the refrigeration equipment.

[0383] The air duct assembly 200 further includes a first drainage member 260 located on the first side, the first drainage member 260 surrounding the opening 170 and communicating with the opening 170, and the first drainage member 260 is configured with a first drainage port 262. The first drainage member 260 can be disposed in the foam layer of the cabinet 400 to increase the space of the compartment.

[0384] The air duct assembly 200 also includes a fan guard 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 guard 240 defines a vent 244, with the inlet of the fan 270 facing the vent 244. The fan 270 is horizontally disposed within the fan guard 240, reducing the height of the fan 270 and, in turn, the overall height of the air duct assembly 200.

[0385] Components such as 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 can all adopt the structures of the above embodiments and will not be repeated here.

[0386] Combine 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 construct a first cavity 282, a first air inlet 201, a second air inlet 202 and an air outlet that are connected to each other. 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, and the first side is adjacent to the second side; the evaporator 230 is arranged in the first cavity 282; the drain plate 100 is located in the first cavity 282; the drain plate 100 is located below the evaporator 230, and the drain plate 100 is constructed with a water guide and an outlet 114. The water guide is recessed relative to the top surface of the drain plate 100 and is connected to the outlet 114. The extension direction of the water guide forms a fourth angle with the air outlet direction of the first cavity 282.

[0387] In this case, the water guide portion may be at least one of the second water guide portion 130 and the third water guide portion 140 .

[0388] The angle between the evaporator 230 and the horizontal direction is less than or equal to a predetermined angle, or the evaporator 230 is arranged along the horizontal direction. The evaporator 230 is placed horizontally, and its downward angle can be less than or equal to 7 degrees 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.

[0389] The air duct assembly 200 further includes a fan 270 located on one side of the first cavity 282. The outlet 114 of the drain plate 100 faces 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 toward the fan 270.

[0390] The second air inlet 202 is located at the front side of the air duct assembly 200 and is connected to the second chamber 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 is connected to the first chamber 410 to return air through the front end of the air duct assembly 200.

[0391] Components such as 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 can all adopt the structures in the above embodiments and will not be repeated here.

[0392] Combine Figures 1 to 25 As 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 constitute a first cavity 282, a first air inlet 201, a second air inlet 202 and an air outlet that are connected to each other, the first air inlet 201 is located on a first side of the first cavity 282, the second air inlet 202 is located on a second side of the first cavity 282, and the first side is adjacent to the second side; the evaporator 230 is located on a second side of the evaporator 230. 0 is disposed within the first cavity 282; the drain plate 100 is located within the first cavity 282; the drain plate 100 is located below the evaporator 230 to receive defrost water. The drain plate 100 is configured with a water guide portion that is recessed downward relative to the top surface of the drain plate 100. The water guide portion extends to both sides of the predetermined surface to the edge of the drain plate 100, forming an opening 170 for drainage at the edge of the drain plate 100. The opening 170 faces the first side; the fan 270 is located on the third side of the first cavity 282. In other words, the drainage positions of the fan 270 and the drain plate 100 are located on different sides, which can reduce the space occupied by the fan 270 side, thereby increasing the compartment space within the refrigeration equipment, thereby providing a large-capacity refrigeration equipment.

[0393] The air duct assembly 200 also includes a first drain member 260 located on the first side. The drainage channel of the first drain member 260 communicates with the opening 170 and is configured with a drain outlet. The first drain member 260 can be molded within the foam layer of the cabinet 400, eliminating the need to occupy the space between the cabinets and effectively expanding the capacity of the cabinets. Drainage from the opening 170 of the drain plate 100 is achieved through the first drain member 260. The structure of the first drain member 260 is described above.

[0394] 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 height 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.

[0395] The second air inlet 202 is located on the second side of the first cavity 282, the first side is adjacent to the second side, the second air inlet 202 and the first air inlet 201 have air inlet temperatures of different temperatures, and the rooms connected to the first air inlet 201 and the second air inlet 202 have different ambient temperatures.

[0396] The first side is at least one of the left and right sides, and the first air inlet 201 and the first drainage component 260 are located on at least one of the left and right sides; the second side is the front side, and the second air inlet 202 is located on the front side; the third side is the rear side, and the fan 270 is located on the rear side.

[0397] When the first compartment 410 is a refrigerator compartment and the second compartment 420 is a freezer compartment, the first air inlet 201 communicating with the refrigerator compartment is arranged on the left and right sides of the air duct assembly 200, and the second air inlet 202 communicating with the freezer compartment is arranged on the front side of the air duct assembly 200. The front end of the second air inlet 202 is blocked by the partition member 210, and the second air inlet 202 is communicated with the freezer compartment through the bottom of the partition member 210. The fan 270 is arranged on the rear side of the air duct assembly 200, and the fan 270 discharges air from the exhaust port.

[0398] The air duct assembly 200 also includes a fan cover 240 arranged between the partition component 210 and the air duct component 220. The fan cover 240 constructs a second cavity 281. A fan 270 is arranged in the second cavity 281. The fan cover 240 is constructed with a vent 244. The inlet of the fan 270 faces the vent 244. The fan cover 240 serves to protect the fan 270.

[0399] The rotation axis of fan 270 forms a first angle α1 with the vertical direction, which can reduce the height dimension occupied by fan 270. Ventilation port 244 is located above fan 270, so that fan 270 is supported by air duct component 220. The position above fan 270 corresponds to the position of evaporator 230. The central axis of vent 244 is collinear with the rotation axis of fan 270, ensuring that air within first cavity 282 is smoothly discharged through the exhaust port by fan 270.

[0400] 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 drainage board 100. The guide surface 2411 can collect water vapor and discharge the collected water from one side of the fan cover 240.

[0401] Components such as 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 can all adopt the structures of the above embodiments and will not be repeated here.

[0402] refer to Figures 1 to 13 As 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 construct a first cavity 282, a first air inlet 201, a second air inlet 202 and an air outlet that are connected to each other. 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, and the first side is adjacent to the second side; the evaporator 230 is arranged in the first cavity 282; the drain plate 100 is located in the first cavity 282; the drain plate 100 is located below the evaporator 230, and the drain plate 100 is constructed with an opening 170 and an outlet 114, the opening 170 faces the first side, and the outlet 114 faces the third side; the first drain component 260 A drainage channel located on the first side and communicating with opening 170 is configured to direct water from drain plate 100 through opening 170 to first drain member 260. A second drain member 290 is located on the third side and configured with a water channel communicating with outlet 114. The combination of first drain member 260 and second drain member 290 allows air duct assembly 200 to drain water from different sides. This increased drainage paths facilitates the discharge of defrost water from drain plate 100 in multiple directions, improving defrosting and drainage efficiency.

[0403] The duct assembly 200 also includes a fan guard 240 and a fan 270 disposed within the fan guard 240. A second drainage member 290 is disposed within or below the fan guard 240. The fan guard 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 horizontal installation of the fan 270 helps reduce the height of the duct assembly 200.

[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 height 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] Components such as 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 can all adopt the structures in the above embodiments and will not be repeated here.

[0406] refer to Figures 10 to 16As shown, the air duct assembly 200 includes a partition member 210, an air duct member 220, a fan 270, an evaporator 230 and a drain plate 100. The partition member 210 and the air duct member 220 construct a first cavity 282, an air inlet and an air outlet that are connected to each other. The evaporator 230 is arranged in the first cavity 282; the drain plate 100 is located in the first cavity 282; the drain plate 100 is located below the evaporator 230, and the drain plate 100 is constructed with a drainage portion 110 and a water guide portion. The drainage portion 110 is constructed with an outlet 114. The drainage portion 110 is recessed relative to the top surface of the drain plate 100. The water guide portion is connected to the drainage portion 110 and is recessed relative to the top surface of the drainage plate 100. The extension direction of the water guide portion forms a fifth angle with the air outlet direction of the first cavity 282. The fan cover 240 is constructed with 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 in 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 through the fan cover 240 for mounting the fan 270 can make the structure of the air duct assembly 200 more compact, reduce the number of parts of the air duct assembly 200, and simplify assembly. The horizontal placement of the fan 270 can also reduce the height of the air duct assembly 200.

[0407] In a direction away from the outlet 114 , the water guide channel is inclined downward to guide water at an inclined angle so that the water can be discharged quickly and completely.

[0408] 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 height 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.

[0409] The air duct component 220 and the partition component 210 construct an air inlet and an air outlet connected to the first cavity 282, and the drainage portion 110 extends from 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.

[0410] 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 have different temperatures and are located on different sides of the first cavity 282. The first air inlet 201 is located on a first side of the first cavity 282, and the second air inlet 202 is located on a 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.

[0411] Components such as 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 can all adopt the structures in the above embodiments and will not be repeated here.

[0412] refer to Figures 1 to 38 As shown, the air duct assembly 200 includes a baffle 210, an air duct 220, a fan 270, an evaporator 230, a drain plate 100, and a diverter. The baffle 210 and the air duct 220 form a first cavity 282, an air inlet, and an air outlet. The evaporator 230 is located within the first cavity 282; the drain plate 100 is located within the first cavity 282; and the drain plate 100 is located below the evaporator 230. The diverter is provided on at least one of the baffle 210 and the air duct 220, and is used to guide a portion of the air entering the first air inlet 201 to flow along the diverter's guide direction. The diverter diverts a portion of the air entering the first air inlet 201, thereby reducing the amount of air entering the first air inlet 201 and the second air inlet 202. This reduces frost caused by temperature differences, prolongs the time between defrosts, and reduces power consumption.

[0413] The structure of the diversion part can be referred to Figures 21 to 38 shown.

[0414] The diversion portion is a first recessed portion 2121 constructed on the partition component 210. The first recessed portion 2121 is recessed toward the inner side of the partition component 210. The first recessed portion 2121 is suitable for guiding part of the incoming air from the first air inlet 201 to be diverted into the first recessed portion 2121. The first air inlet 201 is located on at least one of the left and right sides of the first cavity 282.

[0415] The air duct assembly 200 also includes an evaporator 230 arranged in the first cavity 282, and 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 constitute a first heat dissipation part; the second heat sink 2342 is connected to the heat exchange tube 233, and the second heat sink 2342 is arranged on at least one side of the first heat dissipation part, the diversion part is a ventilation part 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 part 23421, the projection of the first air inlet 201 on the second heat sink 2342 covers the ventilation part 23421, the first heat sink 2341 and the second heat sink 2342 both extend along the second side to the third side, and the third side is the side where the exhaust port is located. The specific implementation and effects of the ventilation portion 23421 can be referred to the embodiment of the evaporator 230 described above, and will not be described again here.

[0416] 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 height 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.

[0417] Components such as 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 can all adopt the structures in the above embodiments and will not be repeated here.

[0418] Combine 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 that are connected to the partition component 210; the evaporator 230 is arranged 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 arranged in the first cavity 282, and the drain plate 100 is located below the evaporator 230. The drain plate 100 is constructed with an outlet 114 and a water guide portion that is 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 arranged on the surface of the drain plate 100. By placing the evaporator 230 horizontally in the air duct assembly 200 and controlling the downward tilt angle of the evaporator 230 relative to the horizontal direction to be within a preset angle, the height occupied by the evaporator 230 can be reduced, and the height of the air duct assembly 200 can be reduced by the evaporator 230; the drain plate 100 is provided with a water guide portion, which meets the drainage requirements and the air supply and heat exchange requirements, ensuring that the wind in the first cavity 282 is fully discharged after heat exchange with the evaporator 230; the drain plate 100 with a water guide portion cooperates with the evaporator 230 to reduce the tilt angle of the evaporator 230; and by arranging a heating element 160 on the drain plate 100, the height occupied by the heating and defrosting structure can be saved, and the height of the air duct assembly 200 can be further reduced.

[0419] In combination with the above, the evaporator 230 , the drain plate 100 and the heating element 160 cooperate to substantially reduce the height of the air duct assembly 200 .

[0420] The heating element 160 covers the lower surface of the drain plate 100, which can prevent the heating element 160 from directly contacting the defrost water received above the drain plate 100, thereby reducing safety hazards.

[0421] 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 and other components can all adopt the structures in the above embodiments and will not be repeated here.

[0422] When the air duct assembly 200 in the above embodiment is applied to a refrigerator and a refrigeration device, the refrigerator and the refrigeration device have the above-mentioned beneficial effects.

[0423] Next, the structure of the box is described in conjunction with the above-mentioned air duct assembly.

[0424] The box body includes a box body 300 and an air duct assembly 200 disposed in the box body 300 . The air duct assembly 200 divides the space in the box body 300 into a first chamber 410 and a second chamber 420 .

[0425] like Figures 39 to 41 As shown, the box body 300 is provided with a first channel 312, a cavity 216 is formed inside the partition part 210, and a second channel 218 is provided on the side of the partition part 210. The first channel 312 corresponds to the second channel 218 one by one, and the cavity 216, the second channel 218 and the first channel 312 are connected.

[0426] It should be noted that the second channel 218 can be provided on the side of the second plate 212 or on the side of the first plate 211 .

[0427] By setting a first channel 312 on the box body 300 and setting a second channel 218 on the side of the partition component 210, after the partition component 210 is installed in the box body 300, the first channel 312 and the second channel 218 cooperate to form a foaming channel for the foaming glue to enter the cavity 216, so that the partition component 210 can be foamed together with the box body 300; before foaming, the evaporator 230, the air duct component 220 and the drainage plate 100 and other components can be pre-assembled on the partition component 210 to form the air duct assembly 200, and then the air duct assembly 200 can be installed in the box body 300 for foaming together, realizing a modular installation method; compared with the installation method in the related art, it effectively simplifies the installation steps, shortens the installation time, and improves production efficiency.

[0428] When the box liner is used in refrigeration equipment, the cabinet of the refrigeration equipment includes a box liner body 300, the box liner body 300 is constructed with a first channel 312, a cavity 216 is formed inside the partition component, and a second channel 218 is provided on the side of the partition component. The second channel 218 and the cavity 216 are connected with the first channel 312 to form a foaming space, so as to realize the integrated foaming molding of the air duct assembly and the box liner body 300, thereby ensuring the sealing performance of the connection part of the air duct assembly 200.

[0429] The cabinet body 400 of the refrigeration equipment includes an outer shell arranged on the outside of the cabinet body 300, a foaming cavity is formed between the outer shell and the cabinet body 300, the cabinet body is constructed with a first channel 312, a cavity 216 is formed inside the partition part 210, and a second channel 218 is provided on the side of the partition part. The foaming cavity, the second channel 218, the cavity 216 and the first channel 312 are connected to form a foaming space, realizing the integrated foaming molding of the air duct assembly and the cabinet body, and simplifying the processing process.

[0430] In an embodiment of the present invention, the partition component 210 is constructed with a recess 217 connected to the cavity 216, and the recess 217 is connected to the second channel 218. The recess 217 is arranged on the periphery of the cavity 216. The foam first enters the recess 217 through the second channel 218, and then enters the gap from different directions through the recess 217, so that the foam quickly fills the entire gap to form a first insulation layer 213, shortening the foaming time and improving the foaming efficiency.

[0431] When the partition member 210 includes a first plate 211 and a second plate 212, the edge of the second plate 212 is recessed downward to form a recess 217 that communicates with the cavity 216. The recess 217 is U-shaped, and the side of the second plate 212 is provided with a through hole that communicates with the recess 217, namely the second channel 218. The bottom of the second plate 212 is provided with a groove, and the gap between the middle of the second plate 212 and the first plate 211 is small, so the speed at which the foam enters the gap during the foaming process is slow. By providing the recess 217 on the edge of the second plate 212, the foam first enters the recess 217 through the second channel 218, and then enters the gap from different directions through the recess 217, so that the foam quickly fills the entire gap to form the first insulation layer 213, shortening the foaming time and improving the foaming efficiency.

[0432] like Figure 41 As shown, the liner body 300 is provided with a slot 311, and the side of the partition member 210 is snap-connected to the slot 311. The first channel 312 is a through hole provided in the slot 311. During installation, the air duct assembly 200 can be installed by simply snap-connecting the side of the partition member 210 to the slot 311 and then foaming the partition member 210 and the liner body 300 together. This effectively simplifies the installation process, shortens the installation time, and improves work efficiency.

[0433] It should be noted that the second channel 218 and the first channel 312 are both in the form of through holes, and can also be in the form of strip-shaped gaps. The specific structural form of the mounting structure is not limited to the slot 311, and can also use a buckle or other connection structure.

[0434] In an embodiment of the present invention, Figure 41As shown, the refrigeration equipment's casing further includes a return air component 430, which is disposed on the inner wall of the first chamber 410 and communicates with the first air inlet 201. When the fan 270 is activated, air in the first chamber 410 passes through the return air component 430 and enters the first cavity 282, where it exchanges heat with the evaporator 230. This cools the air and turns it into cold air. The cold air then passes through the first and second exhaust ports 203 and 204, respectively, and enters the first and second chambers 410 and 420.

[0435] By arranging the return air component 430 on the inner wall of the first chamber 410, maintenance of the return air component 430 is facilitated, the influence of the foaming process on the return air component 430 is avoided, the installation steps of the refrigeration equipment are simplified, and production efficiency is improved; since the return air component 430 is located in the first chamber 410, the space between the box body 300 and the outer shell is reduced, the storage space of the box body 300 is increased, and the capacity of the box body 300 is effectively increased.

[0436] like Figure 41 As shown, the return air component 430 includes a return air duct 431 . The inner wall of the first chamber 410 is provided with a positioning groove 313 . The return air duct 431 is embedded in the corresponding positioning groove 313 . The air outlet of the return air duct 431 is connected to the corresponding first air inlet 201 .

[0437] By embedding the return air duct 431 into the positioning groove 313, the space occupied by the return air component 430 is reduced, which helps to increase the storage space of the refrigeration equipment and provide a large-capacity refrigeration equipment.

[0438] The air outlet of the return air duct 431 is detachably connected to the first air inlet 201. The shape and size of the first air inlet 201 match the shape and size of the air outlet of the return air component 430. The first air inlet 201 can be located on the side of the first plate 211 or the side of the second plate 212.

[0439] like Figure 41 As shown, the return air duct 431 is arranged in the up and down direction, and a main return air outlet 432 connected to the air outlet of the return air duct 431 is formed at the upper end of the return air duct 431, and an auxiliary return air outlet 433 connected to the air outlet of the return air duct 431 is formed on one side of the return air duct 431.

[0440] The return air component 430 includes two return air ducts 431. The left and right walls of the first chamber 410 are respectively provided with positioning grooves 313 extending up and down. The positioning grooves 313 are respectively located on the side of the left and right walls close to the door body. The two return air ducts 431 are respectively embedded in the corresponding positioning grooves 313.

[0441] Since the temperature of the cold air near the door body is the highest, by setting the return air component 430 on the side of the inner wall close to the door body, the return air component 430 can return the cold air near the door body through the return air component 430 into the first cavity 282 for heat exchange, effectively preventing the cold air coming out of the exhaust port from directly entering the return air component 430, thereby improving the cooling efficiency of the refrigeration equipment.

[0442] The following provides an implementation of the refrigeration equipment in combination with the above-mentioned air duct assembly.

[0443] A refrigeration device includes a cabinet and a duct assembly. The duct assembly is located within the cabinet and separates a first chamber from a second chamber. The duct assembly includes a partition member, a duct member, an evaporator, and a drain plate. The partition member and the duct member 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 chamber are adapted to communicate, and the second air inlet, the first cavity, the second air outlet, and the second chamber are adapted to communicate. An evaporator and a drain plate are disposed within the first cavity. The duct member 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 disposed horizontally within the duct assembly, and the downward tilt angle of the evaporator relative to the horizontal plane can be controlled within a preset angle. Alternatively, the evaporator can be disposed horizontally, thereby reducing the height space occupied by the evaporator and, thereby, reducing the overall height of the duct assembly. This reduces the space occupied by the duct assembly within the cabinet, and accordingly increases the storage space within the cabinet, thereby providing a large-capacity refrigeration device.

[0444] In some cases, the first compartment is located above the second compartment, the first compartment is a refrigerator compartment, and the second compartment is a freezer compartment.

[0445] The first air inlet is located on the left and right sides of the air duct assembly and close to the front side of the air duct assembly, and the first air inlet is connected to the first chamber above the air duct assembly. The second air inlet is located on the front side of the air duct assembly and is connected to the second chamber below the air duct assembly.

[0446] The drainage plate can be one or more of the above structures. For details, please refer to the above content and will not be repeated here. The drainage structure of the air duct assembly can be the above drainage method, such as the first drainage component for side drainage, the second drainage component for rear drainage, or the water guide 223 for drainage, or a combination of multiple drainage methods.

[0447] The air duct assembly also includes a fan 270, which is located on one side of the evaporator. Fan 270 can be arranged horizontally or vertically. For details, please refer to the above description of fan 270. The air duct assembly 200 also includes structures such as a fan cover and a fan cover plate 243 used in conjunction with the fan. Please refer to the above description and will not be repeated here.

[0448] The box body 300, the partition component 210, the air duct component 220 and other structures can all be referred to the above content and will not be repeated here.

[0449] The above embodiments are intended to illustrate the present invention only and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and should be encompassed by the scope of the claims of the present invention.

Claims

1. A refrigeration device, characterized in that: include: Cabinet; An air duct assembly is located in the cabinet and separates a first chamber and a second chamber, comprising a partition member, an air duct member, an evaporator, and a drain plate. The partition member and the air duct member limit 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 chamber are adapted to communicate, and the second air inlet, the first cavity, the second air outlet, and the second chamber are adapted to communicate. The evaporator and the drain plate are disposed in the first cavity, the air duct member supports the drain plate, and 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 drainage board is constructed with a water guide portion that is recessed downward relative to the top surface of the drainage board. The water guide portion extends to the edges of the drainage board on both sides of the preset surface to form an opening at the edge of the drainage board. The opening is directed toward the side where the first air inlet is located, so that part of the air entering the first air inlet is suitable for passing through the opening and flowing into the first cavity along the extension direction of the water guide portion. The extension direction of the water guide portion forms a fourth angle with the air outlet direction of the air duct assembly.

2. The refrigeration equipment according to claim 1, characterized in that The drain plate is configured with a drain portion that is recessed downward relative to a top surface of the drain plate. The drain portion is configured with an outlet, and the drain portion is communicated with the water guide portion.

3. The refrigeration equipment according to claim 2, characterized in that The bottom of the water guide portion is inclined in a first direction toward the drainage portion, and the first direction forms a sixth angle with the top surface of the drainage plate, so that the depth of the water guide portion gradually increases toward the drainage portion.

4. The refrigeration equipment according to claim 2, characterized in that The bottom of the drainage portion is inclined in a second direction toward the outlet, and the second direction forms a seventh angle with the top surface of the drainage plate, so that the depth of the drainage portion gradually increases toward the outlet.

5. The refrigeration equipment according to claim 1, characterized in that The water guide portion extends to the end of the drainage plate and forms an opening, and a first drainage component is provided on the side where the opening is located.

6. The refrigeration equipment according to claim 1, characterized in that It also includes a fan, wherein the rotation axis of the fan forms a first angle with the vertical direction.

7. The refrigeration equipment according to claim 1, characterized in that It also includes a fan and a fan cover, the fan is arranged on one side of the evaporator, the fan cover is located between the fan and the evaporator, the inlet of the fan is connected to the first cavity through the ventilation hole of the fan cover, and the fan cover is constructed with the first exhaust port and the second exhaust port.

8. The refrigeration equipment according to claim 1, characterized in that The cabinet includes a box body, the box body is configured with a first channel, a cavity is formed inside the partition component, a second channel is provided on the side of the partition component, and the second channel and the cavity are connected to the first channel.

9. The refrigeration equipment according to claim 8, characterized in that The partition member comprises: a first plate; The second plate is arranged below the first plate. The second plate and the first plate form the cavity. The edge of the second plate is recessed downward to form a recess communicating with the cavity. The recess is communicated with the second channel.

10. The refrigeration equipment according to any one of claims 1 to 9, characterized in that: At least one of the partition component and the air duct component is provided with a partition, the orthographic projection of the partition at the first air inlet covers a local area of ​​the first air inlet, the orthographic projection is located at one end of the first air inlet close to the second air inlet, and the partition is spaced from the first air inlet by a preset distance.

11. The refrigeration device according to any one of claims 1 to 9, characterized in that: The second air inlet is arranged on the front side of the air duct component, and the front side of the partition component is provided with a mounting portion for shielding the second air inlet.

12. The refrigeration device according to any one of claims 1 to 9, characterized in that: The first air inlets are located on the left and right sides of the air duct assembly and close to the front side of the air duct assembly.

13. The refrigeration device according to any one of claims 1 to 9, characterized in that: The first chamber is located above the second chamber, the first chamber is a refrigeration chamber, and the second chamber is a freezing chamber.

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