Air duct assembly and refrigeration equipment

Abstract

The application relates to the technical field of refrigeration equipment, and provides an air duct assembly and refrigeration equipment. The air duct assembly comprises an air duct component and a partition component, the partition component and the air duct component define a first cavity, a first air inlet, a second air inlet and an air outlet, the first air inlet and the second air inlet comprise air inlets with different temperatures, the partition component is configured with an inner recess recessed towards the inner side of the partition component, and the inner recess is suitable for guiding part of the air in at least one of the first air inlet and the second air inlet to flow into the inner recess. The air duct assembly provided by the application sets the inner recess of the partition component, part of the air is guided to flow into the inner recess, the amount of frost generated due to the cross contact of air inlets with different temperatures is reduced, the air inlet path is prevented from being blocked by frost, the defrosting frequency is reduced, and the energy saving and consumption reduction effect is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of refrigeration equipment, in particular to an air duct assembly and a refrigeration equipment. BACKGROUND

[0002] With the improvement of living quality, consumers have higher and higher demand for storage space in refrigerators, and the size of the storage space in the refrigerator has become a concern of consumers. How to increase the storage space of the refrigerator without changing the volume of the refrigerator has become a research direction of technical personnel. Among them, the components of the refrigeration system need to occupy part of the volume of the cabinet, and 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. When the evaporator in the refrigeration system is arranged at the rear side of the refrigeration compartment of the refrigerator, the thickness of the cabinet is large, and the storage space in the depth direction of the cabinet is insufficient. When the evaporator in the refrigeration system is arranged horizontally between two compartments, the evaporator does not occupy the space at the rear side of the refrigeration compartment. Based on this structure, the cold air return and the frozen air return will converge on the side of the evaporator facing the air inlet, which will cause frost to easily condense on the side of the evaporator facing the air inlet. The frost will block the air return path, resulting in poor air circulation and heat exchange, high energy consumption of the equipment, and poor user experience. SUMMARY

[0003] The present application aims to at least solve one of the technical problems in the related art. To this end, the present application provides an air duct assembly, a baffle component is provided with an inner recess to divert part of the air inlet through the inner recess to reduce the amount of frost generated by the cross contact of air inlets with different temperatures, avoid frost blocking the air inlet path, reduce the number of defrosting, and play a role in energy saving and consumption reduction.

[0004] The present application also provides a refrigeration equipment.

[0005] According to the air duct assembly of the first aspect of the present application, comprising:

[0006] an air duct component,

[0007] a baffle component, which limits a first cavity, a first air inlet, a second air inlet and an air outlet with the air duct component, the first air inlet and the second air inlet have air inlets with different temperatures, and is configured to be recessed inwardly of the baffle component, the inner recess is adapted to guide part of the air inlet of at least one of the first air inlet and the second air inlet to flow into the inner recess.

[0008] According to the air duct assembly, the inner recess is configured to divide a part of the air inlet, so as to reduce the air volume of the first air inlet and the second air inlet in cross contact, thereby reducing frost caused by cross contact, avoiding local frost blocking the air inlet path, ensuring the ventilation and heat exchange effect, delaying defrosting, reducing the defrosting frequency and defrosting power consumption, and achieving the energy saving and consumption reduction effect.

[0009] According to an embodiment of the present application, the inner recess includes a first inner recess, the first inner recess extends along the second side of the partition component to the third side by a first preset length with a first preset width, the second air inlet is located on the second side, and the first inner recess is close to the first side edge of the partition component, and the first air inlet is located on the first side. The first inner recess guides the air inlet of the first air inlet, so as to reduce the air volume of the first air inlet and the second air inlet in cross contact.

[0010] According to an embodiment of the present application, the first inner recess is configured with a first top surface and a first guide surface connected to the first top surface, the first guide surface is inclined downward away from the first top surface, and the first guide surface is located away from the first air inlet. The first guide surface guides the air in the first inner recess.

[0011] According to an embodiment of the present application, the first inner recess is symmetrically arranged on both sides of the partition component. The first inner recess on both sides respectively divides the air inlet of the corresponding first air inlet.

[0012] According to an embodiment of the present application, the inner recess includes a second inner recess, one side of the second inner recess faces the second air inlet, the second inner recess extends along the second side of the partition component to the third side by a second preset length with a second preset width, and the second preset length is less than the length of the evaporator in the first cavity, and the length of the evaporator is the length along the second side to the third side. The second inner recess divides the air inlet of the second air inlet.

[0013] According to an embodiment of the present application, the second inner recess is configured with a second top surface and a second guide surface connected to the second top surface, the second guide surface is inclined downward away from the second top surface, and the second guide surface faces the side where the air outlet is located. The second guide surface guides the air in the second inner recess to flow to the evaporator for heat exchange.

[0014] According to an embodiment of the present application, the evaporator includes a heat exchange pipe and a heat dissipation fin connected to the heat exchange pipe, and the heat dissipation fin extends from the side where the second air inlet is located to the side where the air outlet is located. The heat dissipation fin can guide the air.

[0015] According to one embodiment of the present application, the fin is configured with a protrusion, which extends into the second inner recess. The air in the second inner recess can be exchanged through the protrusion, so as to ensure the heat exchange effect.

[0016] According to one embodiment of the present application, when the inner recess comprises a first inner recess, the second inner recess is separated from the first inner recess by a third wall plate.

[0017] According to one embodiment of the present application, when the inner recess comprises a first inner recess, the first preset length is greater than or equal to the second preset length.

[0018] According to one embodiment of the present application, the evaporator is further arranged in the first cavity, and an angle between the evaporator and the horizontal direction is less than or equal to a preset angle, or the evaporator is parallel to the horizontal direction. The evaporator is arranged horizontally, so as to reduce the height space occupied by the evaporator, and further reduce the height space occupied by the air duct assembly.

[0019] According to the refrigeration equipment of the second aspect of the present application, the air duct assembly is arranged in the storage space of the cabinet body and separates the first chamber and the second chamber, the first air inlet is communicated with the first chamber, and the second air inlet is communicated with the second chamber.

[0020] According to the refrigeration equipment of the present application, the air in the first chamber and the second chamber can be circulated and exchanged through the air duct assembly. The baffle part of the air duct assembly is provided with an inner recess, which can divert a part of the air, so as to reduce the frost amount at the air contact position, reduce the defrosting frequency, prolong the defrosting period, reduce the power consumption of defrosting, save electricity and energy, ensure the air circulation and improve the heat exchange effect, and make the operation stability of the refrigeration equipment better and the power consumption lower.

[0021] Additional aspects and advantages of the present application will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or in the related art, the following will briefly introduce the drawings needed to be used in the embodiments or the related art description. Obviously, the drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0023] Figure 1 is a structural schematic diagram of a refrigeration equipment provided by the embodiments of the present application, and the door body is not shown in the diagram;

[0024] Figure 2 is a partial structure diagram of a refrigeration equipment provided by the embodiment of the present application, and the partial structure of the cabinet and the tank are not shown in the figure;

[0025] Figure 3 is a partial enlarged structure diagram of A in Figure 2

[0026] Figure 4 is a partial structure diagram of a wind channel assembly provided by the embodiment of the present application;

[0027] Figure 5 is a partial structure exploded state diagram of a wind channel assembly provided by the embodiment of the present application;

[0028] Figure 6 is an exploded state structure diagram of a wind channel assembly provided by the embodiment of the present application;

[0029] Figure 7 is a partial top view diagram of a wind channel assembly provided by the embodiment of the present application, and the components above the drain plate are not shown in the figure;

[0030] Figure 8 is a B-B cross-sectional structure diagram of Figure 7

[0031] Figure 9 is a side view structure diagram of a partial structure of a wind channel assembly provided by the embodiment of the present application;

[0032] Figure 10 is a partial structure diagram of another refrigeration equipment provided by the embodiment of the present application, and the main difference from Figure 2 is that the structure of the drain plate is different, and the door body is not shown in the figure;

[0033] Figure 11 is a partial enlarged structure diagram of C part in Figure 10

[0034] Figure 12 is a partial structure diagram of another wind channel assembly provided by the embodiment of the present application, and the components above the drain plate are not shown in the figure;

[0035] Figure 13 is a partial structure exploded state diagram of another wind channel assembly provided by the embodiment of the present application;

[0036] Figure 14 is a longitudinal cross-sectional structure diagram of a third wind channel assembly provided by the embodiment of the present application, to show the position of the fan;

[0037] Figure 15 ​​​is a partial structure schematic view of a third air duct assembly provided by the embodiment of the present application, parts above the drain plate are not shown in the figure;

[0038] Figure 16 is a partial structure exploded view of the third air duct assembly provided by the embodiment of the present application;

[0039] Figure 17 is a structure schematic view of the third refrigeration equipment provided by the embodiment of the present application, the door body is not shown in the figure;

[0040] Figure 18 is a longitudinal section structure schematic view of the third refrigeration equipment provided by the embodiment of the present application;

[0041] Figure 19 is Figure 18 is a partial enlarged structure schematic view of the D part in the figure;

[0042] Figure 20 is an exploded state structure schematic view of the fourth air duct assembly provided by the embodiment of the present application;

[0043] Figure 21 is a bottom view structure schematic view of the fourth air duct assembly provided by the embodiment of the present application;

[0044] Figure 22 is a three-dimensional structure schematic view of the drain plate provided by the embodiment of the present application;

[0045] Figure 23 is a top view structure schematic view of the drain plate provided by the embodiment of the present application;

[0046] Figure 24 is Figure 23 is an E-E section structure schematic view;

[0047] Figure 25 is Figure 23 is an F-F section structure schematic view;

[0048] Figure 26 is a structure schematic view of the second plate body and its installation state in the baffle part of the air duct assembly provided by the embodiment of the present application;

[0049] Figure 27 is a structure schematic view of another second plate body and its installation state in the baffle part of the air duct assembly provided by the embodiment of the present application;

[0050] Figure 28 is a structure schematic view of the first inner recess and the second inner recess of the second plate body in the baffle part of the air duct assembly provided by the embodiment of the present application;

[0051] Figure 29is a structural schematic view of a third inner recess of a second plate body in a baffle component of an air duct assembly provided by an embodiment of the present application;

[0052] Figure 30 is a three-dimensional structural schematic view of an installation state of an evaporator and a drainage plate provided by an embodiment of the present application;

[0053] Figure 31 is a side structural schematic view of an installation state of an evaporator and a drainage plate provided by an embodiment of the present application;

[0054] Figure 32 is one of exploded state schematic views of an evaporator, a drainage plate and a heating element provided by an embodiment of the present application;

[0055] Figure 33 is another of exploded state schematic views of an evaporator, a drainage plate and a heating element provided by an embodiment of the present application;

[0056] Figure 34 is an installation state schematic view of an evaporator, a drainage plate and a second heating element provided by an embodiment of the present application;

[0057] Figure 35 is an exploded state schematic view of an evaporator, a drainage plate and a second heating element provided by an embodiment of the present application;

[0058] Figure 36 is an installation state schematic view of an evaporator, a drainage plate and an air duct component provided by an embodiment of the present application;

[0059] Figure 37 is a structural schematic view of a first support portion in an air duct component provided by an embodiment of the present application;

[0060] Figure 38 is Figure 37 is a local enlarged structural schematic view of an H portion in the above.

[0061] Reference signs:

[0062] 100, drainage plate; 110, drainage portion; 111, first drainage portion; 112, second drainage portion; 113, second flow guide surface; 114, outlet; 115, third drainage 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;

[0063] 200, air duct assembly; 201, first air inlet; 202, second air inlet; 203, first air outlet; 204, second air outlet;

[0064] 210, partition component; 211, first plate body; 212, second plate body; 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 thermal insulation layer; 214, third plate body; 215, third wall plate;

[0065] 220, air duct component; 221, second thermal insulation layer; 222, first support portion; 2221, partition portion; 2222, guide surface; 22221, curved portion; 22222, flat portion; 2223, guide plate; 2224, second support inclined surface; 2225, second support groove; 223, water guide member; 2231, third drain pipe; 224, third thermal insulation layer; 225, second support portion; 226, heating component;

[0066] 230, evaporator; 231, first heater; 232, second heater; 233, heat exchange pipe; 234, heat dissipation fin; 2341, first heat dissipation fin; 2342, second heat dissipation fin; 23421, ventilation portion; 2343, mounting hole;

[0067] 240, fan cover; 241, first cover body; 2411, guide surface; 242, second cover body; 2421, first water guide channel; 2422, blocking portion; 2423, third drain opening; 2424, first air guide portion; 2425, second air guide portion; 2426, second mounting column; 2427, partition plate; 2428, water collecting portion; 243, fan cover plate; 2431, third air guide portion; 2432, fourth air guide portion; 244, ventilation opening;

[0068] 250, first air door;

[0069] 260, first drain component; 262, first drain opening; 263, first drain pipe; 264, first wall plate; 265, second wall plate;

[0070] 270, fan; 271, fan mounting seat;

[0071] 281, second cavity; 282, first cavity;

[0072] 290, second drain component; 291, second drain pipe;

[0073] 400, cabinet body; 410, first compartment; 420, second compartment; 430, air return component;

[0074] α1, first included angle; α2, second included angle; α3, third included angle;

[0075] θ2, sixth included angle; θ3, seventh included angle. DETAILED DESCRIPTION

[0076] The embodiments of the present application will be further described below in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0077] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the embodiments of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", "third" are only used for description purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present application, unless otherwise specified and limited, the terms "a plurality of", "a plurality of", "a plurality of" mean two or more.

[0078] In the description of the embodiments of the present application, it should be noted that unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0079] In the embodiments of the present application, unless otherwise specified and limited, the first feature is "on" or "under" the second feature, which can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or it can only mean that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or it can only mean that the horizontal height of the first feature is less than that of the second feature.

[0080] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Also, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0081] Embodiments of the present application, in conjunction with Figures 1 to 38 As shown in the drawings, a refrigeration equipment is provided, which comprises a cabinet body 400, and the cabinet body 400 comprises a box body.

[0082] The refrigeration equipment can be a refrigerator, a freezer, a display cabinet, a vending cabinet or a wine cabinet and the like, and the refrigeration equipment can be used for cold storage or freezing.

[0083] In the following embodiments, the front, rear, left, right, up and down directions correspond one by one to the directions of the refrigeration equipment.

[0084] Embodiments of the present application provide a box body, which comprises a box body and an air duct assembly 200, and the space in the box body is divided into a first chamber 410 and a second chamber 420 by the air duct assembly 200.

[0085] The air duct assembly 200 can play a role in separating the chambers and can also play a role in circulating the air supply. It should be noted that in order to ensure the independence of the first chamber 410 and the second chamber 420, the installation of the air duct assembly 200 and the box body needs to be sealed to avoid air leakage between the first chamber 410 and the second chamber 420.

[0086] Embodiments of the present application provide an air duct assembly 200, which can divide the entire space in the box body into a first chamber 410 and a second chamber 420, or the air duct assembly 200 divides the partial space in the box body into a first chamber 410 and a second chamber 420.

[0087] The air duct assembly 200 independently supplies air to the first chamber 410 and the second chamber 420, and the functions of the first chamber 410 and the second chamber 420 can be the same or different. When the functions of the first chamber 410 and the second chamber 420 are different, that is, the ambient temperatures in the first chamber 410 and the second chamber 420 are different, the first chamber 410 can be a refrigeration chamber, and the second chamber 420 can be a freezing chamber, and the air duct assembly 200 supplies air to the refrigeration chamber at a lower frequency than to the freezing chamber. When the functions of the first chamber 410 and the second chamber 420 are the same, such as both being refrigeration chambers, the ambient temperatures of the two refrigeration chambers can be the same or different, and at this time, the air duct assembly 200 can supply air to the two refrigeration chambers at the same or different frequencies, which can be set as needed. Of course, the chambers separated by the air duct assembly 200 are not limited to refrigeration and freezing, but can also be variable-temperature chambers or other function chambers, which can be set as needed.

[0088] When the cabinet body 400 is connected to the door body, the door body is in a position to close the cabinet body 400, and the first chamber 410 and the second chamber 420 are two closed and independent spaces; when the door body is in a position to open the cabinet body 400, at least one of the first chamber 410 and the second chamber 420 can be used to take and place articles.

[0089] The number of air duct assemblies 200 arranged in the refrigeration equipment can be set as needed.

[0090] It can be understood that, as shown in Figures 2 to 3 , Figure 10 , Figure 11 and Figures 17 to 20 , 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 is located above the air duct component 220, and the partition component 210 and the air duct component 220 construct 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 arranged in the first cavity 282, and the drain plate 100 is located below the evaporator 230. The partition component 210 and the air duct component 220 jointly limit the air inlet, the first cavity 282, and the air outlet to communicate with each other, so that the air entering the air duct assembly 200 is discharged after heat exchange.

[0091] As shown in Figure 1 and Figure 2 , the partition component 210 is connected to the tank body, and the connection between the partition component 210 and the tank body is sealed to separate the space in the tank body into the first chamber 410 and the second chamber 420 which are independent of each other. The first cavity 282 between the partition component 210 and the air duct component 220 is used to install components such as the evaporator 230, the drain plate 100, and a heating structure for defrosting, so as to meet the heat exchange requirements of the first chamber 410 and the second chamber 420.

[0092] 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 in communication 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 in communication to form a second circulation path. At least one of the first circulation path and the second circulation path is in communication 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.

[0093] As shown in Figure 1 and Figure 2 , the first chamber 410 is located above the air duct assembly 200, and the first chamber 410 is set as a refrigeration chamber. The second chamber 420 is located below the air duct assembly 200, and the second chamber 420 is set as a freezer chamber. That is, the first chamber 410 is located above the second chamber 420. The air duct assembly 200 is provided with the first air outlet 203 facing upward and the second air outlet 204 facing downward. A first air door 250 is arranged at the first air outlet 203 for opening and closing adjustment. A second air door is arranged at the second air outlet 204 for opening and closing adjustment. The air duct assembly 200 is provided with the first air inlet 201 and the second air inlet 202 close to the front end. The first air inlet 201 is in communication with the return air duct of the refrigeration chamber. The first air inlet 201 is arranged on the left and right sides of the air duct assembly 200. The second air inlet 202 is in communication with the freezer chamber. The second air inlet 202 is arranged on the front side or the lower side of the air duct assembly 200.

[0094] It should be noted that the first air inlet 201 and the second air inlet 202 are close to the same end of the air duct assembly 200, and the first air outlet 203 and the second air outlet 204 are also close to the same end of the air duct assembly 200. Generally, the air inlets and the air outlets are on opposite ends. For example, the air inlets are close to the front end, and the air outlets are close to the rear end. However, the positions are not limited to the above. The air inlets can also be close to the left end or the right end. The positions of the air inlets and the air outlets are flexible, and can be selected as needed.

[0095] 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, the first side is adjacent to the second side, that is, the first air inlet 201 and the second air inlet 202 are arranged on different sides of the air duct assembly 200, at this time, the air inlet of the first air inlet 201 and the air inlet of the second air inlet 202 will meet in the first cavity 282, when the first air inlet 201 and the second air inlet 202 have different air inlet temperatures (that is, the ambient temperatures of the first chamber 410 and the second chamber 420 are different), the meeting place of the air inlet of the first air inlet 201 and the air inlet of the second air inlet 202 is easy to frost due to heat exchange. The first air inlet 201 and the second air inlet 202 are located on different sides of the air duct assembly 200, which can also be understood as that the first air inlet 201 and the second air inlet 202 form an included angle.

[0096] As shown in Figure 6 , the first side is at least one of the left side and the right side, and the second side is the front side.

[0097] Next, in combination with Figures 1 to 16 and Figures 20 to 25 , an embodiment of the drain plate 100 is provided, and the structure of the drain plate 100 is described by taking the drain plate 100 installed in the above-mentioned air duct assembly 200 as an example. However, the drain plate 100 is not limited to being installed in the above-mentioned air duct assembly 200, and other structures suitable for installing the drain plate 100 in the following embodiments can also install the drain plate 100 described below.

[0098] In combination with Figures 1 to 7 , an embodiment of the present application provides a drain plate 100, which is configured with a water guide portion recessed downward relative to the top surface of the drain plate 100, the water guide portion extends to the edge of the drain plate 100 on both sides of the predetermined surface, so that the edge of the drain plate 100 forms an opening 170, the opening 170 is directed to the side where the first air inlet 201 is located, so that part of the air inlet of the first air inlet 201 is suitable for flowing into the first cavity 282 along the extension direction of the water guide portion through the opening 170.

[0099] The function of the first air inlet 201 here is not limited, which can be communicated with the refrigeration chamber, and the water guide portion guides the refrigeration air; or the water guide portion is communicated with the freezing chamber, and can also guide the freezing air. By setting the water guide portion and designing the drain plate as an inverted V-shaped structure, part of the refrigeration return air enters the evaporator through the V-shaped structure space, so as to solve the problem of condensation of the refrigerator return air, reduce the contact between the refrigeration return air and the freezing return air, reduce the condensation of the mixed freezing return air, make the frost more evenly distributed in the evaporator, and reduce the frost blocking the freezing return air.

[0100] Part of the air inlet of the first air inlet 201 is introduced into the first cavity 282 through the opening 170 and along the extension direction of the water guide part. The part of the air inlet of the first air inlet 201 can be divided into two parts, the amount of air that meets the air inlet of the second air inlet 202 is reduced, and the frost condensed by the contact between the air inlets of the first air inlet 201 and the second air inlet 202 is reduced. The time interval between two defrosting is prolonged, the defrosting frequency is reduced, the power consumption required for defrosting is reduced, and the power consumption of the refrigeration equipment is reduced.

[0101] The water guide part is recessed downward relative to the top surface of the drain plate 100, so that the drain plate 100 forms a groove, and part of the air inlet of the first air inlet 201 can flow along the groove to the inside of the first cavity 282. The water guide part can guide the air flow in it.

[0102] The preset surface forms an angle with the extension direction of the water guide part, and the preset surface extends in the direction from the air inlet to the air outlet. For example, 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 preset surface extends from front to back. Here, the extension trend of the preset surface is from front to back, and the preset surface can be inclined to extend. The position of the preset surface can be selected as needed.

[0103] In some cases, the preset surface can be a symmetry surface of the drain plate 100, and the water guide parts are symmetrically arranged on both sides of the preset surface, so that the drain plate 100 has a symmetric structure and has better structural stability.

[0104] It should be noted that the preset surface is not limited to a symmetry surface, and the drain plate 100 is not limited to a symmetric structure. The two sides of the preset surface can also be asymmetric structures.

[0105] The opening 170 of the drain plate 100 described above can guide part of the air inlet of the first air inlet 201, and the opening 170 of the drain plate 100 can also drain water.

[0106] When the opening 170 of the drain plate 100 functions to divide part of the air inlet, the depth of the recess of the water guide part relative to the top surface of the drain plate 100 can not be limited.

[0107] In some cases, the depth of the recess of the water guide part gradually increases in the direction toward the opening 170. The water guide part with such a structure can be referred to as a second water guide part 130. That is, the second water guide part 130 has a large depth at one end toward the opening 170, which helps to guide the air flow in it. When the evaporator 230 is placed above the drain plate 100, the gradually increasing depth of the second water guide part 130 can also increase the distance between the evaporator 230 and the drain plate 100, appropriately expand the air flow space, and help the defrosting water collected by the drain plate 100 to drain from the opening 170.

[0108] The depth of the second water guide portion 130 gradually increases towards one end of the opening 170, which can be continuous or in steps.

[0109] It can be understood that the bottom of the second water guide portion 130 is inclined in a first preset direction towards the opening 170, and the first preset direction forms a first preset angle with the top surface of the drain plate 100. That is, the bottom surface of the second water guide portion 130 is a downwardly extending inclined surface in the first preset direction, which helps the wind flow into the first cavity 282 and facilitates drainage.

[0110] The first preset direction is a direction that is inclined downwardly towards the opening 170 at the first preset angle with the top surface, and the size of the first preset angle can be selected as needed.

[0111] In order to reduce the size of the drain plate 100 in the height direction, the first preset angle can be an angle less than or equal to 7°, which can meet the requirements of drainage and air guiding, and can also reduce the size of the air duct assembly 200 in the height direction, reduce the height of the air duct assembly 200 in the cabinet 400, and help to increase the space of the cabinet 400 to provide a large-capacity refrigeration device.

[0112] In some cases, the first preset angle is set to 3°, which can meet the drainage requirements of the drain plate 100 and also sufficiently reduce the height of the drain plate 100 to achieve small-angle drainage. Of course, the first preset angle can also be set to 1°, 2°, 4°, 5°, 6° or 7°.

[0113] Of course, the depth of the recess of the second water guide portion can also remain unchanged (not shown in the figure), and the consistent depth of the recess of the second water guide portion can also play a role in air guiding and drainage.

[0114] It can be understood that the water guide portion includes a flow guide surface arranged in the extension direction of the water guide portion, and the flow guide surface is close to the opposite side surface in the direction from the top surface to the bottom surface of the drain plate 100. That is, the second water guide portion 130 is provided with a third flow guide surface 131 in the extension direction thereof, and the third flow guide surface 131 is close to the opposite side surface in the direction from the top surface to the bottom surface of the drain plate 100. The third flow guide surface 131 is an inclined surface inclined to the opposite side.

[0115] The defrosting water received by the top surface of the drain plate 100 and the third flow guide surface 131 can fall into the bottom of the water guide portion in the flow direction of the third flow guide surface 131, so that the defrosting water is collected in the water guide portion, and the water in the water guide portion is discharged.

[0116] The opposite side surface of the third flow guide surface 131 can be a vertically arranged surface or also a flow guide surface, which can be selected as needed. For example, Figure 5 and Figure 6As shown, the two opposite sides of the second water guide part 130 are both third water guide surfaces 131.

[0117] As shown, the preset surface of the drain plate 100 is provided with a plurality of second water guide parts 130 on each side, and the plurality of second water guide parts 130 are arranged side by side, and a plurality of openings 170 are formed on both sides of the drain plate 100, so that part of the air inlet of the first air inlet 201 can enter the first cavity 282 along the plurality of openings 170. Figures 5 to 7

[0118] At the preset height position, the width of the second water guide part 130 gradually decreases in the direction of the opening 170, facilitating the water received in the second water guide part 130 to converge in the direction of the opening 170.

[0119] As shown and described above, the drain plate 100 with the second water guide part 130 described above can not be provided with a drain part 110. Figures 1 to 7 As shown and described above, the drain plate 100 with the second water guide part 130 described above can not be provided with a drain part 110.

[0120] Figures 1 to 16 As shown and described above, the drain plate 100 with the second water guide part 130 described above can not be provided with a drain part 110. Figures 20 to 25 As shown, the drain plate 100 according to the embodiment of the present application is provided, which is configured with a water guide part recessed relative to the top surface of the drain plate 100, and the extension direction of the water guide part forms a fourth included angle with the air outlet direction above the drain plate 100.

[0121] When the above-mentioned drain plate 100 and the evaporator 230 are both arranged in the first cavity 282 of the air duct assembly 200, the air from the air inlet of the air duct assembly 200 enters the first cavity 282 and flows in the direction of the air outlet, and the air in the first cavity 282 flows in the space between the drain plate 100 and the evaporator 230 and the space inside the evaporator 230. When the air flows between the drain plate 100 and the evaporator 230, the water guide part forms a fourth included angle θ1 with the air outlet direction, which can inhibit the air from flowing directly from the water guide part to the air outlet, so as to prolong the time for the air to stay in the first cavity 282, so that the air can be fully contacted with the evaporator 230 and heat exchanged, and the heat-exchanged air is then discharged from the air outlet, which helps to improve the heat exchange efficiency.

[0122] 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 with a plurality of air inlets or air outlets, which can form a plurality of air outlet directions. The extension direction of the water guide part forms an included angle with at least one air outlet direction, which can ensure the heat exchange efficiency of the air in one direction. Of course, the extension direction of the water guide part forms an included angle with all air outlet directions, which can ensure that the air in multiple flow paths can be effectively heat exchanged, and the heat exchange efficiency can be ensured. The air inlet is generally arranged at the front end of the air duct assembly 200, and the air outlet is generally arranged at the rear end of the air duct assembly 200, so the air outlet direction can be from front to back.​​

[0123] When the air inlet is divided into the first air inlet 201 and the second air inlet 202, the second air inlet 202 is arranged in front of the air duct assembly 200, the air outlet is arranged at the rear of the air duct assembly 200, the communication path of the second air inlet 202 and the air outlet forms the first air outlet direction, the second air inlet 202 corresponds to the lower position of the evaporator 230, and then the air flows in the direction from bottom to top and from front to back.

[0124] The drainage plate 100 of the embodiment, the extension direction of the water guide part forms an angle with the first air outlet direction, that is, the extension direction of the water guide part forms an angle with the front-rear direction. The first air inlet 201 can be arranged at least one of the left and right sides of the air duct assembly 200, the communication path of the first air inlet 201 and the air outlet forms the second air outlet direction, and the extension direction of the water guide part also forms an angle with the second air outlet direction. The angle formed by the extension direction of the water guide part and the first air outlet direction, and the angle formed by the extension direction of the water guide part and the second air outlet direction, can be understood as the fourth angle, but the specific angle value can be the same or different.

[0125] The extension direction of the water guide part can be a straight path or a curved path. When the extension path of the water guide part is a straight path, the path from one end of the water guide part away from the drainage part 110 to the other end of the water guide part communicating with the drainage part 110 is the extension path; when the extension path of the water guide part is a curved path, the curved path of the water guide part can have multiple ends communicating with the drainage part 110, the curved path can be a broken line path formed by multiple straight line paths in communication, or the curved path is a curve with one or more curvature radii, and the shape of the curved path can be set as needed. The extension direction of one water guide part can form one or more angles with the air outlet direction, that is, the fourth angle can have one or more angle values, which can be set as needed. Figures 10 to 25 As shown in the embodiment of the present application, another drainage plate 100 is provided, which is configured with a drainage part 110 and a water guide part. The drainage part 110 is configured with an outlet 114, and the drainage part 110 is recessed relative to the top surface of the drainage plate 100; the water guide part communicates with the drainage part 110, and the water guide part is recessed relative to the top surface of the drainage plate 100, and the extension direction of the water guide part forms a fifth angle θ1 with the air outlet direction above the drainage plate 100.

[0126] In use, the drainage plate 100 is arranged below the evaporator 230 to collect the defrosting water generated by the defrosting of the frost on the surface of the evaporator 230. Part of the water falls into the water guide part and is guided into the drainage part 110 along the extension direction of the water guide part. Generally, multiple water guide parts are provided, and the water collected by each water guide part is collected to the drainage part 110 and discharged through the outlet 114 of the drainage part 110. Another part of the water directly falls into the drainage part 110 and is discharged through the drainage part 110.

[0127] The fifth included angle is different from the fourth included angle in that, in the water drainage plate provided with the water guide part and the water drainage part, the extension direction of the water guide part and the air outlet direction form the fifth included angle; in the water drainage plate provided with only the water guide part, the extension direction of the water guide part and the air outlet direction form the fourth included angle. The angle value of the fifth included angle and the fourth included angle can be selected as required, which is not limited herein.

[0128] Figure 23 The solid arrow above the water drainage plate 100 indicates the extension direction of the water guide part, the dotted arrow indicates the air outlet direction, and the fifth included angle θ1 is indicated. The fifth included angle is 90° in the figure.

[0129] It should be noted that the water guide part and the water drainage part 110 are recessed based on the top surface of the water drainage plate 100. The top surface can be a plane or a curved surface. The top surface can be a surface defined by a plurality of lines or a surface defined by a plurality of surfaces. Correspondingly, the bottom of the water guide part and the bottom of the water drainage part 110 form the bottom surface of the water drainage plate 100. The bottom surface can also be a plane or a curved surface. The bottom surface can be a surface defined by a plurality of lines or a surface defined by a plurality of surfaces. The upper surface of the water drainage plate 100 is the entire surface of the water drainage plate 100 facing upwards. The top surface is part of the upper surface. The lower surface of the water drainage plate 100 is the entire surface of the water drainage plate 100 facing downwards. The bottom surface is part of the lower surface.

[0130] The water guide part and the water drainage part 110 of the water drainage plate 100 of the embodiment can drain the collected water, solve the water drainage problem in the air duct assembly 200, and by setting the extension direction of the water guide part to form an included angle with the air outlet direction of the air duct assembly 200, the time of air staying in the air duct assembly 200 can be prolonged, that is, the heat exchange time is prolonged, so as to improve the heat exchange efficiency and meet the refrigeration demand of the refrigeration equipment. The structure of the water drainage plate 100 is simple.

[0131] The structure of the water drainage plate 100 of the embodiment of the application is that the depth of the water guide part recessed downward relative to the top surface of the water drainage plate 100 is unchanged, and the water drainage plate 100 is configured with the water drainage part 110 recessed relative to the top surface of the water drainage plate 100. This water guide part can be referred to as a third water guide part 140, as shown in Figures 11 to 13 The water drainage part 110 is configured with an outlet 114. The third water guide part 140 communicates with the water drainage part 110. The defrosting water collected by the third water guide part 140 can be drained from the opening 170 at the end of the water drainage plate 100, and can also be drained from the outlet 114 of the water drainage part 110. The structure is simple and the water drainage effect is good.

[0132] At this time, the evaporator 230 and the drain plate 100 can be horizontally placed, the defrosting water can be discharged, and the height of the air duct assembly 200 can be reduced. If the evaporator 230 and the drain plate 100 are both arranged to be inclined downward to drain water, the downward inclination angle of the evaporator 230 and the drain plate 100 can be reduced (the downward inclination angle of the evaporator 230 and the drain plate 100 can be less than or equal to 7°), and the size of the air duct assembly 200 in the height direction can be reduced, thereby expanding the internal volume of the refrigeration equipment.

[0133] The outlet 114 of the drainage portion 110 and the air outlet are located on the same side of the first cavity 282, and the drainage portion and the air outlet portion are located on the same side of the first cavity 282, so that the drainage structure and the air outlet structure can be integrated together.

[0134] When the fan 270 is arranged in the air duct assembly 200, the fan 270 is located on the same side as the air outlet, that is, the outlet 114, the air outlet, and the fan 270 are all located on the same side, and the defrosting water of the fan 270 can be discharged together with the defrosting water of the drain plate 100.

[0135] Along the extension direction of the drainage portion 110, a plurality of third water guide portions 140 are arranged side by side on both sides of the drainage portion 110, and the plurality of third water guide portions 140 are distributed below the evaporator 230, so as to receive defrosting water at a plurality of positions below the evaporator 230, which helps to quickly drain water.

[0136] The drainage portion 110 can also be provided in plurality, and the plurality of drainage portions 110 can be parallel or form an included angle. When the area of the drain plate 100 is unchanged, the more the number of drainage portions 110, the shorter the length of the third water guide portion 140, which helps the water received by the third water guide portion 140 to be collected in the drainage portion 110, so as to shorten the defrosting and draining time. When the drainage portion 110 is provided in plurality, the third water guide portion 140 close to the edge of the drain plate has an opening, and the other third water guide portions 140 are in communication with the drainage portion 110.

[0137] It can be understood that the depth of the recess of the drainage portion 110 gradually increases in the direction toward the outlet 114, so that the water in the drainage portion 110 flows to the outlet 114 under the action of gravity.

[0138] It can be understood that the bottom of the drainage portion 110 is inclined in the second direction, and the second direction forms a seventh included angle θ3 with the top surface of the drain plate 100. That is, the bottom of the drainage portion 110 is inclined, and the water in the drainage portion 110 is collected along the inclined path (the second direction) to the outlet 114 and discharged, the drainage effect is good, and the problem of local water accumulation can be avoided; and the water can flow smoothly.

[0139] When the top surface of the drainage plate 100 is horizontally positioned, it can be understood that the second direction forms a seventh angle θ3 with the horizontal plane. Along the top surface of the drainage plate 100, a drainage section 110 gradually recesses downwards towards the outlet 114. At this time, the seventh angle θ3 is the angle between the bottom of the drainage section 110 and the horizontal plane, and the second direction is a downward-sloping direction.

[0140] The bottom of the drainage section 110 can be a sloping line or a sloping surface. In some cases, the bottom of the drainage section 110 is a sloping surface, which can be a plane or a curved surface, depending on the specific needs.

[0141] In some cases, the bottom of the drainage section 110 may not form a continuous slope or ramp, such as a stepped shape, yet it can still meet drainage requirements.

[0142] It is understandable that the seventh included angle θ3 can be less than or equal to 7°. A small seventh included angle θ3 helps to reduce the distance between the top surface and the bottom surface of the drainage plate 100, enabling drainage at a small angle. This reduces the size of the air duct assembly 200 in the height direction, shrinks the space occupied by the air duct assembly 200, and helps to increase the storage space of the refrigeration equipment, thus providing a large-capacity refrigeration equipment.

[0143] It should be noted that the seventh included angle θ3 can also be greater than 7°. Since the area occupied by the drainage part 110 of the drainage plate 100 is small, the downward tilt angle of the drainage part 110 is slightly larger, which has little impact on the overall volume of the drainage plate 100. Therefore, the angle of the seventh included angle θ3 is not strictly limited.

[0144] In some cases, such as Figure 12 As shown, the depth of the recess in the drainage section 110 remains unchanged. At this time, the drainage section can be referred to as the third drainage section 115. The drainage plate 100 is inclined towards the outlet 114 to facilitate drainage. If the outlet 114 is located at the rear end of the air duct assembly 200, the drainage plate 100 is inclined downward from front to back so that the water in the drainage section 110 flows backward and is discharged.

[0145] like Figure 11 and Figure 12 As shown, the third water guiding section 140 includes a fourth guiding surface 141 disposed along the extending direction of the third water guiding section 140. From the top surface of the drain plate 100 towards the bottom surface, the fourth guiding surface 141 approaches its opposite side. The fourth guiding surface 141 can guide the defrosting water received by the top surface of the drain plate 100 and the fourth guiding surface 141 to the bottom of the third water guiding section 140 so that the water in the third water guiding section 140 can be discharged.

[0146] The fourth flow guide surface 141 is inclined towards the direction of the outlet 114 from the bottom surface to the top surface of the drain plate 100. When the drain plate 100 is inclined towards the direction of the outlet 114, and the third water guide portion 140 has a large amount of water collected therein, the fourth flow guide surface 141 can guide a portion of the water flow to be discharged from the rear.

[0147] In the embodiment of the present application, the water guide portion is recessed in the direction towards the drain portion 110, and the depth of the recessed water guide portion gradually increases. In this case, the water guide portion can be referred to as the first water guide portion 120. The first water guide portion 120 gradually increases in depth in the direction towards the drain portion 110, so that the water flows to the drain portion 110 under the action of gravity and is discharged from the outlet 114 of the drain portion 110. Figures 20 to 25 As shown in the drawings, the depth of the recessed water guide portion gradually increases in the direction towards the drain portion 110. In this case, the water guide portion can be referred to as the first water guide portion 120. The first water guide portion 120 gradually increases in depth in the direction towards the drain portion 110, so that the water flows to the drain portion 110 under the action of gravity and is discharged from the outlet 114 of the drain portion 110.

[0148] It can be understood that the bottom of the first water guide portion 120 is inclined in the first direction in the direction towards the drain portion 110, and the first direction forms a sixth included angle θ2 with the top surface of the drain plate 100. That is, the bottom of the first water guide portion 120 is inclined, and the water in the first water guide portion 120 is collected along the inclined path (the first direction) to the drain portion 110, so that the drainage effect is good, and the problem of local water accumulation can be avoided, and the water can flow smoothly.

[0149] When the top surface of the drain plate 100 is horizontally arranged, it can be understood that the first direction forms a sixth included angle θ2 with the horizontal plane. The first water guide portion 120 is gradually recessed downward along the top surface of the drain plate 100 from one end away from the drain portion 110 to a position communicating with the drain portion 110. In this case, the sixth included angle θ2 is the included angle between the bottom of the first water guide portion 120 and the horizontal plane, and the first direction is a downward inclined direction.

[0150] The bottom of the first water guide portion 120 can be a slanted line or a slanted surface. In some cases, the bottom of the first water guide portion 120 is a slanted surface, which can be a flat surface or a curved surface, and the specific selection can be made according to the needs.

[0151] In some cases, the bottom of the first water guide portion 120 does not form a continuous slanted line or a slanted surface, such as a stepped shape, which can still meet the water guide requirements.

[0152] It can be understood that the sixth included angle θ2 is less than or equal to 7°. The angle of the sixth included angle θ2 is small, which helps to reduce the distance from the top surface to the bottom surface of the drain plate 100, to achieve small-angle drainage, and to reduce the size of the air duct assembly 200 in the height direction, to reduce the space occupied by the air duct assembly 200, to help improve the storage space of the refrigeration equipment, and to provide a large-capacity refrigeration equipment.

[0153] In some cases, the sixth included angle θ2 is 3°, which can meet the drainage requirements of the drainage plate 100 and sufficiently reduce the height of the drainage plate 100 to achieve small-angle drainage. Of course, the sixth included angle can also be 1°, 2°, 4°, 5°, or 6°.

[0154] In some cases, the first water guide part 120 is different from the third water guide part 140 described above in that the first water guide part 120 is inclined to the drainage part 110 inside the drainage plate 100, and the third water guide part 140 is inclined to the end of the drainage plate 100, that is, the inclination directions are different, and other structures and parameters can be set to be the same, such as the inclination angles can be the same.

[0155] It can be understood that the plurality of water guide parts arranged side by side on the same side of the drainage part 110 have a common bottom surface of the drainage plate 100, so that the flatness of the bottom surface of the drainage plate 100 is better, the appearance of the drainage plate 100 is simple, and positioning and installation are facilitated.

[0156] Here, the side-by-side arrangement can be understood as the plurality of water guide parts arranged in sequence on one side of the extension direction of the drainage part 110. Generally, a plurality of water guide parts are arranged side by side on both sides of the drainage part 110, that is, the drainage part 110 is arranged between the two rows of water guide parts. Of course, when the drainage part 110 is arranged at the end of the drainage plate 100, the water guide part is arranged on only one side of the drainage part 110.

[0157] It can be understood that the extension direction of the water guide part is perpendicular to the air outlet direction, effectively prolonging the time for the air to stay in the first cavity 282 to fully exchange heat.

[0158] It can be understood that the extension direction of the drainage part 110 forms an eighth included angle with the air outlet direction, so as to minimize the air outlet along the extension direction of the drainage part 110, and also to prolong the time for the air to stay in the first cavity 282 to ensure the heat exchange effect.

[0159] Of course, the drainage part 110 can also extend along the air outlet direction, and the water guide parts can be symmetrically arranged on both sides of the drainage part 110 to facilitate uniform and stable water guide of the water guide parts on both sides of the drainage part 110.

[0160] As shown in Figure 20 and Figure 25 , when the drainage part 110 extends along the air outlet direction, the water guide part is perpendicular to the air outlet direction to minimize the air entering the water guide part.

[0161] It can be understood that, as shown in Figure 24 and Figure 25 , the depth of the recess of the drainage part 110 is greater than or equal to the depth of the recess of the water guide part. That is, the minimum depth of the drainage part 110 needs to be greater than or equal to the maximum depth of the water guide part, so that the water of the water guide part can be collected to the drainage part 110 to avoid water accumulation in the water guide part.

[0162] As can be understood, as shown in Figure 20 , Figure 21 and Figure 24 , the two sides of the drainage part 110 are provided with a plurality of parallel water guide parts, and the plurality of water guide parts guide water at different positions into the drainage part 110. By providing a plurality of water guide parts, it can also be understood that the two sides of the drainage part 110 form a wave-shaped structure, which minimizes the area of the top surface of the drainage plate 100, reduces the water accumulation on the top surface of the drainage plate 100, and makes the water received by the drainage plate 100 quickly drain out of the outlet 114 along the water guide part and the drainage part 110.

[0163] As can be understood, as shown in Figure 22 and Figure 23 , the drainage part 110 is provided with at least two, and the two or more drainage parts 110 have two or more outlets 114, which realize multi-position drainage and help the water on the drainage plate 100 to be quickly drained. In the case where the area of the drainage plate 100 does not change, the number of drainage parts 110 increases, which can shorten the length of the water guide part, so that the water quickly enters the drainage part 110.

[0164] The adjacent drainage parts 110 are a first drainage part 111 and a second drainage part 112, and a first water guide area 123 located on one side of the first drainage part 111 and a second water guide area 124 located on one side of the second drainage part 112 are constructed between the first drainage part 111 and the second drainage part 112. In the direction towards the first drainage part 111, the depth of the water guide part recess of the first water guide area 123 gradually increases, and in the direction towards the second drainage part 112, the depth of the water guide part recess of the second water guide area 124 gradually increases. That is, the depth of the water guide part recess of the first water guide area 123 and the second water guide area 124 is the smallest at the abutting position, which helps the water received by the first water guide area 123 to be guided into the first drainage part 111 and the water received by the second water guide area 124 to be guided into the second drainage part 112, shortens the length of the water guide part, and facilitates the water to be collected into the drainage part 110.

[0165] Of course, as shown in Figure 15 , the drainage part 110 can also be provided with one, at which time the outlet 114 of the drainage part 110 avoids the inlet of the fan 270 as much as possible. The two sides of the drainage part 110 are provided with a plurality of parallel water guide parts, which helps to shorten the water guide path of the water guide part to accelerate the water guide out.

[0166] As shown in Figure 12 , Figure 13 , Figure 15 , Figure 16 and Figures 22 to 23As shown, the water drainage portion 110 extends from front to back, the outlet 114 is arranged at the back end of the water drainage plate 100, the water guide portion extends in the left-right direction, and the left and right sides of the water drainage portion 110 are formed in a wave shape. The arrangement of the wave plate can facilitate water gathering and discharge. At this time, the evaporator 230 does not need to be arranged downwardly along the front-back direction.

[0167] The water guide portion and the top surface of the water drainage plate 100 form an included angle of less than 7°. That is, the water guide portion extends obliquely in the left-right direction of the water drainage plate 100, and the oblique angle of the water guide portion does not affect the angle of the water drainage plate 100 in the front-back direction. The water drainage portion 110 extends from front to back, and the water drainage portion 110 forms a seventh included angle θ3 with the horizontal plane from front to back. The seventh included angle θ3 affects the height change of the water drainage plate 100 in the front-back direction, but overall, the water drainage portion 110 is arranged at a local position of the water drainage plate 100, the area of the water drainage plate 100 occupied by the water drainage portion 110 is small, the local position of the water drainage plate 100 has a slightly larger inclination angle, has a smaller influence on the overall storage space in the chamber, and can also optimize the volume in the chamber.

[0168] In the above, the water guide portion can be at least one of the first water guide portion 120 and the third water guide portion 140. That is, the water drainage plate 100 can be configured with at least one of the water drainage portion 110 and the first water guide portion 120 and the third water guide portion 140. The structure of the water drainage plate 100 is various.

[0169] It can be understood that, referring to Figure 24 and Figure 25 As shown, the first water guide portion 120 includes a first flow surface 121 arranged along the extension direction of the first water guide portion 120. From the top surface to the bottom surface of the water drainage plate 100, the first flow surface 121 is close to the opposite side surface. That is, the longitudinal section of the first water guide portion 120 converges downwardly, so that the water falling on the first flow surface 121 and the top surface can be collected to the bottom of the first water guide portion 120, and then collected to the water drainage portion 110 along the first water guide portion 120.

[0170] At least one side surface of the first water guide portion 120 along the extension direction thereof is arranged as the first flow surface 121. The shape of the longitudinal section of the first water guide portion 120 can be an inverted triangular shape or an inverted trapezoidal shape. Referring to Figure 24 and Figure 25 As shown, both side surfaces of the first water guide portion 120 along the extension direction thereof are the first flow surfaces 121, and both sides of the first water guide portion 120 can guide flow.

[0171] It can be understood that, referring to Figure 24 and Figure 25As shown, the drainage part 110 includes a second flow guide surface 113 arranged along the extension direction of the drainage part 110. From the top surface to the bottom surface of the drainage plate 100, the second flow guide surface 113 is closer to the opposite side surface, so that the longitudinal section of the drainage part 110 is folded from top to bottom. The water falling on the second flow guide surface 113 and the top surface can be collected to the bottom of the drainage part 110 and then discharged from the outlet 114.

[0172] Among the two side surfaces of the drainage part 110 along the extension direction thereof, at least one side surface is arranged as the second flow guide surface 113. The shape of the longitudinal section of the drainage part 110 can be an inverted triangular shape or an inverted trapezoidal shape. Referring to Figure 25 As shown, both side surfaces of the drainage part 110 along the extension direction thereof are the second flow guide surfaces 113, and both sides of the drainage part 110 can guide the flow.

[0173] As shown in Figure 24 and Figure 25 As shown, the first water guide part 120 is provided with the first flow guide surface 121, and the drainage part 110 is provided with the second flow guide surface 113, which sufficiently guides the flow so that the water received by the drainage plate 100 is discharged from the outlet 114 as soon as possible.

[0174] In the above embodiment, the first flow guide surface 121 and the second flow guide surface 113 can be a plane or a curved surface, which can be selected as needed.

[0175] It can be understood that the width of the first preset section of the water guide part in the direction towards the drainage part 110 gradually decreases. It can also be understood that in the direction towards the drainage part 110, the water guide part is in a gradually folded state, so that the water in the water guide part is gathered, which helps the water in the water guide part to enter the drainage part 110.

[0176] The first preset section here can be understood as a section parallel to the top surface of the drainage plate 100, which is a horizontal section when the drainage plate 100 is in the installed state. The width of the water guide part can be understood as the distance between the two side walls of the water guide part in the extension direction thereof. Taking the first water guide part 120 as an example, it can be understood as the distance between the two first flow guide surfaces 121. Gradual decrease generally means continuous decrease, but it does not exclude stepwise decrease.

[0177] It can be understood that the width of the second preset section of the drainage part 110 in the direction towards the outlet 114 increases. The defrosting water received by the plurality of water guide parts converges towards the drainage part 110. The position of the outlet 114 of the drainage part 110 has the largest amount of water, and the width of the drainage part 110 increases, which can provide a larger drainage space and help the water to be stably discharged.

[0178] The second preset cross section herein can be understood as a cross section parallel to the top surface of the drain plate 100, i.e. a horizontal cross section when the drain plate 100 is in the installed state. The width of the drainage portion 110 can be understood as the distance between the two side walls in the extension direction of the drainage portion 110, i.e. the distance between the two second flow guide surfaces 113. The increase is generally gradual, but stepwise increase is not excluded.

[0179] The first preset cross section is parallel to the second preset cross section, and can also be coplanar.

[0180] It can be understood that, as shown in Figure 22 the edge of the drain plate 100 is folded upward to form a flange 150, which surrounds the drain plate 100 and is slotted at a position corresponding to the outlet 114. The flange 150 functions to block the overflow of water on the upper surface of the drain plate 100, so that the water on the upper surface of the drain plate 100 is discharged along the outlet 114, thereby ensuring that the water in the air duct assembly 200 is discharged from the drain.

[0181] The local position of the flange 150 extends upward to form a positioning portion 151, and the two adjacent positioning portions 151 are used to limit the first heater 231 above the drain plate 100. The fixing mode of the heater is simple, and the structure of the drain plate 100 is simple.

[0182] It should be noted that when the end of the water guide portion is formed with an opening, the flange does not need to be provided.

[0183] In the above embodiment, the contour shape of the drain plate 100 is related to the shape of the evaporator 230 and the air duct assembly 200, and the shape of the drain plate 100 is not limited. The contour shape of the drain plate 100 can be rectangular, trapezoidal, circular or other shapes. The upper surface and the lower surface of the drain plate 100 have the same shape.

[0184] The drain plate 100 in the above embodiment is applied to the air duct assembly 200, i.e. the drain plate 100 is arranged below the evaporator 230. From the front to the back, the evaporator 230 does not need to be inclined downward, which solves the problem that the inclined angle of the evaporator 230 will lose the internal volume of the compartment. In the case of 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 internal volume of the compartment.

[0185] Of course, in actual use, the evaporator 230 can also be slightly inclined downward, but even if the evaporator 230 is not inclined downward, the drainage effect will not be affected.

[0186] The drain plate 100 is also connected with a vibrator (not shown in the figure), which provides a vibration force according to the defrosting requirement. The on-off of the vibrator is closely related to the timing of defrosting. The vibrator can be deployed synchronously with the defrosting work, or can be appropriately delayed compared with the defrosting work.

[0187] The vibrator can be any one of an eccentric motor, an ultrasonic vibrator, or an electromagnetic vibrator.

[0188] Based on the drainage plate 100 described above, the drainage structure connecting the drainage plate 100 and the drain pipe is described below.

[0189] As shown in Figures 2 to 13 , the air duct assembly 200 further comprises a first drainage component 260, which is in communication with the openings 170 of the drainage plate 100 in the first cavity 282, and the first drainage component 260 is located on the adjacent two sides of the drainage plate 100 with the fan 270. The first drainage component 260 can be understood as a side drainage structure.

[0190] The first drainage component 260 is provided with a first drainage port 262, which is in communication with a drain line (the drain line is a first drain pipe 263) to drain the water received by the drainage plate 100.

[0191] The first drainage component 260 is configured with a drainage channel, the cross-sectional area of which gradually decreases from top to bottom, which can ensure comprehensive drainage of the openings 170, and can also converge the water to the first drainage port 262.

[0192] As shown in Figure 6 and Figure 7 , the first drainage component 260 covers all the openings 170 of the drainage plate 100 as much as possible, and ensures that the connection parts of the first drainage component 260, the air duct component 220, and the partition component 210 are sealed, avoiding the occurrence of air leakage and water leakage. Figure 5 and Figure 7 , part of the openings 170 does not correspond to the first drainage component 260, which is to show the position of the openings 170. In actual application, the first drainage component 260 covers all the openings 170.

[0193] The first drainage component 260 is configured with a through hole in communication with the openings 170, and the area of the through hole covers all the openings 170 to ensure the drainage effect and the sealing effect, avoiding water leakage.

[0194] It can be understood that the first drainage component 260 is provided with at least one air inlet, that is, the first drainage component 260 is provided with at least one of the first air inlet 201 and the second air inlet 202. As shown in Figure 6 and Figure 9 , taking the first drainage component 260 provided with the first air inlet 201 as an example, the first air inlet 201 passes through the inside of the first drainage component 260 and is in communication with the first cavity 282, realizing the return air of the first chamber 410. The first air inlet 201 is in communication with the first chamber 410 through the return air component 430 to perform return air.

[0195] As shown in Figure 13 , the first drainage component 260 includes oppositely arranged first and second wall plates 264 and 265, the first wall plate 264 is configured with a through hole, and the second wall plate 265 is configured with the first air inlet 201. The first wall plate 264 faces the drainage plate 100, and the second wall plate 265 faces the cabinet 400. Wherein, the first wall plate 264 and the second wall plate 265 can be detachably connected or integrally formed. In some cases, the first drainage component 260 is configured as an integrally formed structure to avoid leakage at the connection.

[0196] It should be noted that in the case that 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 to enable the return air component 430 of the first chamber 410 to enter the first cavity 282 through the first air inlet 201.

[0197] As shown in Figures 2 to 13 , the opening 170 of the drainage plate 100 faces the first side of the first cavity 282, the second cavity 281 is located at the second side of the first cavity 282, the fan 270 is arranged in the second cavity 281, and 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 side and the right side, and the second side of the second cavity 281 can be understood as the rear side. The water outlet direction of the drainage plate 100 is different from the air outlet direction of the first cavity 282, which can reduce the water vapor carried by the air, reduce the influence of drainage on the fan 270, and reduce the amount of frost on the fan 270. At this time, the opening 170 of the drainage plate 100 faces at least one of the left side and the right side.

[0198] As shown in Figures 5 to 8As shown, the drain plate 100 comprises a second water guide part 130 recessed relative to the top surface of the drain plate 100, the extension direction of the second water guide part 130 forms an angle with the air outlet direction above the drain plate 100, the depth of the recess of the second water guide part 130 gradually increases in the direction of the first side of the second cavity 281, the end of the second water guide part 130 towards the first side of the second cavity 281 is configured as an opening 170, the water received by the second water guide part 130 is discharged from the opening 170 along the extension direction of the water guide part, and the opening 170 is in communication with the first drain part 260 to discharge the water through the first drain port 262. The drain plate 100 has a simple structure and good drainage effect. In addition, the return air of the first compartment 410 enters the first cavity 282 through the first air inlet 201, the air enters the first cavity 282 from the left side or the right side, and can flow along the second water guide part 130; the return air of the second compartment 420 enters the first cavity 282 through the second air inlet 202, the air enters the first cavity 282 from the front side of the air duct assembly 200, and the paths of the return air of the first compartment 410 and the return air of the second compartment 420 entering the first cavity 282 are different, the contact between the two paths of return air is reduced, and the amount of frost generated by the contact between the two paths of return air is also reduced.

[0199] At this time, the air outlet direction above the drain plate 100 is from front to back, the extension direction of the second water guide part 130 is left-right direction, and the angle between the extension direction of the second water guide part 130 and the air outlet direction above the drain plate 100 is 90°, so that the second water guide part 130 can slow down the flow speed of the air in the first cavity 282, prolong the time of the air staying in the first cavity 282, and optimize the heat exchange effect.

[0200] It should be noted that the drain plate 100 comprises a second water guide part 130 extending to the left side from a preset position and a second water guide part 130 extending to the right side from the preset position, and the drain plate 100 has openings 170 towards the left and right sides, and the air duct assembly 200 is provided with first drain parts 260 on the left and right sides, which has a simple structure and good water guide effect. The preset position can be a symmetrical surface of the drain plate 100, or a longitudinal surface extending in the front-rear direction. The preset surface can be the end surface of the drain part, and the preset surface of the second water guide part extending to the left and right sides of the drain plate can be the same longitudinal surface or different longitudinal surfaces.

[0201] Different from the above embodiment, the air duct assembly 200 is provided with a third water guide part 140. Figures 10 to 13 As shown, the drain plate 100 arranged in the air duct assembly 200 is configured with a third water guide part 140, and the opening 170 of the third water guide part 140 is in communication with the first drain part 260.

[0202] When the fan 270 is located behind the duct assembly 200, and the first drainage component 260 is located on at least one of the left and right sides of the duct assembly 200, the above drainage method can be understood as side drainage. Since the fan 270 is located behind the duct assembly 200, the evaporator 230 and the fan 270 drain independently. The defrost water of the evaporator 230 is discharged from the left and right sides through the first drainage component 260. The defrost water flowing towards the fan and the water condensed when it encounters the fan 270 can be discharged through the structure below the fan 270. The structure below the fan 270 can be the rear drainage structure described below, or other structures that can discharge water from the second cavity 281.

[0203] Unlike the drainage method of the first drainage component 260 mentioned above, refer to Figures 10 to 16 As shown, the air duct assembly 200 also includes a fan cover 240, which restricts the second cavity 281. A fan 270 is disposed in the second cavity 281 of the fan cover 240. The fan cover 240 is configured with a vent 244, and the second cavity 281 is connected to the first cavity 282 through the vent 244.

[0204] In some cases, both the fan cover 240 and the fan 270 are provided with a second drainage component 290 on the rear side of the duct assembly 200, located on the side where the fan is located, which provides a rear drainage method.

[0205] The fan cover 240 is provided with a second drainage component 290, which is located inside the fan cover 240 or located below the outside of the fan cover 240.

[0206] refer to Figures 14 to 16 As shown, when the second drainage component 290 is installed inside the fan cover 240, the space inside the fan cover 240 is fully utilized, which can reduce the height of the air duct assembly 200 and expand the capacity of the refrigeration equipment.

[0207] The fan cover 240 is arranged on the side of the outlet 114 of the drain plate 100, and one end of the fan cover 240 is communicated with the outlet 114 of the drain plate 100. The fan cover 240 comprises a first cover body 241 and a second cover body 242 arranged below the first cover body 241, and the fan 270 is arranged above the second cover body 242. The second cover body 242 is provided with a third drain port 2423, and the water discharged from the outlet 114 of the drain plate 100 is drained to the third drain port 2423 along the second cover body 242. The second cover body 242 can receive the water discharged from the drain plate 100, the water dripped from the first cover body 241, and the water dripped from the fan 270, and discharge the defrosting water in the first cavity 282, which helps to simplify the structure of the air duct assembly 200. At this time, the drain plate 100 can adopt the structure with the drain part 110, and specific embodiments can be referred to the above-mentioned drain plate 100. The outlet 114 of the drain plate 100 faces the rear, and the second cover body 242 is arranged at the rear of the drain plate 100, so that a rear drainage structure is provided.

[0208] The second drain part 290 is configured to form a first water guide channel 2421 communicated with the outlet 114 of the drain plate 100, and the second drain part 290 comprises a blocking part 2422 protruding upward along the surface of the second cover body 242, the blocking part 2422 limits the first water guide channel 2421, and the fan 270 is arranged on one side of the blocking part 2422. The blocking part 2422 separates the first water guide channel 2421 from the fan 270, so as to prevent water from flowing to the fan 270 and reduce the influence of water on the fan 270.

[0209] In the direction away from the outlet 114 of the drain plate 100, the first water guide channel 2421 is inclined downward, so that the water in the first water guide channel 2421 is discharged downward, which is simple in structure and good in drainage effect. The end of the first water guide channel 2421 forms the third drain port 2423, and the third drain port 2423 is connected with a drain pipe to discharge water into the press chamber through the drain pipe.

[0210] The blocking part 2422 can be a plate-shaped structure or a block-shaped structure protruding upward from the second cover body 242, which can be selected according to requirements. Of course, the blocking part 2422 can also be a part detachably connected to the second cover body 242, such as a plate structure inserted or clamped to the second cover body 242, and the structure of the blocking part 2422 is not limited to this, and other structures capable of achieving the blocking function can also be used.

[0211] It should be noted that the drain plate 100 and the second cover body 242 are provided with a partition plate 2427, the partition plate 2427 makes the drain plate 100 and the second cover body 242 only communicate at the outlet 114, and other parts are separated by the partition plate 2427, so as to ensure that the first cavity 282 and the second cavity 281 communicate at the ventilation opening 244 and the outlet 114, and are separated at other parts. The partition plate 2427 can be integrally formed with the second cover body 242 or detachably connected.

[0212] The second cover body 242 and the drain plate 100 can be two independent components, or the second cover body 242 and the drain plate 100 are integrally formed as a whole component.

[0213] The first air guide part 2424 and the second air guide part 2425 are arranged in the fan cover 240, the first air guide part 2424 and the second air guide part 2425 cooperate with the fan 270 to guide air to the first air outlet 203 and the second air outlet 204, and ensure that the air flows out from the corresponding path. Figure 15 As shown, the second cover body 242 is provided with the first air guide part 2424 and the second air guide part 2425.

[0214] The fan 270 is installed on the upper surface of the second cover body 242 through a fan mounting seat 271, the upper surface of the second cover body 242 is provided with a plurality of second mounting columns 2426, and 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 angle and direction of the fan 270 can be adjusted, and the structure is simple.

[0215] The upper surface of the second cover body 242 is inclined downward in the direction away from the drain plate 100, that is, in the direction towards the third drain port 2423, so that the defrosting water on the surface of the second cover body 242 can flow in the direction of the third drain port 2423 under the action of gravity.

[0216] The second cover body 242 is constructed with a water collecting part 2428, the water collecting part 2428 is located on the side of the second cover body 242 towards the third drain port 2423, the water collecting part 2428 gradually reduces the surface area in the direction of the third drain port 2423 and communicates with the third drain port 2423, and the water collected by the water collecting part 2428 can be discharged through the third drain port 2423. The water collecting part 2428 gradually reduces the surface area in the direction of the third drain port 2423, that is, the water collecting part 2428 is gathered in the direction of the third drain port 2423, so as to facilitate the collection and discharge of the defrosting water received by the second cover body 242.

[0217] Based on the fact that the upper surface of the second cover body 242 is inclined downward in the direction towards the third drain port 2423, the water collecting part 2428 can also be inclined downward, and the drainage effect is better, but the water collecting part 2428 is not limited to be inclined downward, and the case where the water collecting part is horizontally arranged is not excluded.

[0218] The second cover body 242 is provided with a heating component 226, which heats the second cover body 242 to heat defrosting of the fan cover 240 and components such as the fan 270 inside the fan cover 240. The heating component 226 can be a heating film formed on the second cover body 242, or the heating component 226 is a heating plate located below the second cover body 242, and the structure of the heating component 226 is not limited to this, and other structures capable of achieving heating defrosting can also be used.

[0219] Unlike the second drainage component 290 described above, as shown in FIGS. 9 and 10, the second drainage component 290 can also be located below the fan cover 240, and the second drainage component 290 is sealed with the outer surface of the fan cover 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, that is, the second water guide channel is separated from the fan 270 by the fan cover 240, reducing the influence of water in the second water guide channel on the fan 270 and other components. Figure 10 Figure 11 The shape of the second drainage component 290 can be set to a U-shaped structure with a flange, or the second drainage component 290 is integrally formed below the second cover body 242. The structure of the second drainage component 290 is diverse, and can be selected as needed. When the drainage plate 100 is provided with multiple outlets 114, multiple second drainage components 290 can be provided below the fan cover 240, and the second water guide channel does not interfere with the fan 270. At the local position corresponding to the second drainage component 290 below the air duct assembly 200, the local position protrudes downward, so that the height of the local position of the air duct assembly 200 is larger, and the height of other positions is not affected, which also plays a role in expanding the capacity of the refrigeration equipment.

[0220] In the direction away from the outlet 114 of the drainage plate 100, the second water guide channel is inclined downward, so that the water in the second water guide channel is guided downward, which is simple in structure and good in drainage effect. The second drainage component 290 is provided with a second drainage port, which is connected with the second drainage pipe 291, and the water is drained into the compressor chamber through the second drainage pipe 291.

[0221] Of course, the water guide channel (the first water guide channel 2421 or the second water guide channel) can also be horizontally arranged, which does not increase the size of the air duct assembly 200 in the height direction, which helps to reduce the height of the air duct assembly 200, and thus increases the storage space of the refrigeration equipment.

[0222] The fan cover 240 described above is provided with a wire hole (not shown in the figure), so that the electrical connection components of the air duct assembly 200 can pass through the wire hole to realize electrical connection, which is simple in structure and convenient for wiring.

[0223] The fan cover 240 described above is provided with a wire hole (not shown in the figure), so that the electrical connection components of the air duct assembly 200 can pass through the wire hole to realize electrical connection, which is simple in structure and convenient for wiring.

[0224] ​When the installation mode of the fan 270 is different from the above-mentioned mode, that is, without the fan cover 240, the drainage mode is different from the above-mentioned first drainage component 260 and the second drainage component 290. The air duct component 220 supports the drainage plate 100, the drainage plate 100 is located below the evaporator 230, the water guide 223 is arranged on the side of the outlet 114 of the drainage plate 100, one side of the water guide 223 faces the outlet 114 and communicates with the outlet 114, the other side of the water guide 223 constitutes a drainage port, so that the water guide 223 communicates with the third drainage pipe 2231, and the water discharged from the outlet 114 of the drainage plate 100 is drained to the third drainage pipe 2231 along the water guide 223.

[0225] The fan 270 is arranged on one side of the evaporator 230, the fan cover plate 243 is located between the fan 270 and the evaporator 230, and the inlet of the fan 270 communicates with the first cavity 282 through the air vent 244 of the fan cover plate 243. The fan cover plate 243 is arranged outside the water guide 223, and is fixed on the box body and surrounds a cavity for installing the fan 270 with the box body, and the cavity communicates with the first cavity 282 through the air vent 244 of the fan cover plate 243. Alternatively, the fan cover plate 243 itself surrounds a cavity for installing the fan 270, and the cavity communicates with the first cavity 282, and the fan cover plate 243 is fixedly installed on the box body. The third cavity is limited between the fan cover plate 243 and the water guide 223, and the air in the first cavity 282 is guided out by the fan 270 through the third cavity.

[0226] Among them, the water guide 223 can be understood as part of the air duct component 220, or a part independent of the air duct component 220, which can be selected as needed. The fan cover plate 243 is an installation component of the fan 270, and the main function of the fan cover plate 243 is similar to that of the fan cover 240. The fan cover plate 243 or the fan cover 240 is arranged in one air duct assembly 200, the fan cover plate 243 is used in combination with the water guide 223, and the fan cover 240 is used in combination with the second drainage component 290. When the air duct assembly 200 includes the fan cover 240, the air vent 244 is arranged on the fan cover 240, so that the air in the first cavity 282 is discharged by the fan 270 through the air vent 244.

[0227] The fan cover plate 243 is provided with a third air guide part 2431 and a fourth air guide part 2432, so that the fan 270 sends air out of the first air outlet 203 and the second air outlet 204.

[0228] Next, the fan 270 and the installation mode of the fan 270 will be described.

[0229] As Figures 5 to 16As shown, the air duct assembly 200 further comprises a fan cover 240, the fan cover 240 comprising a first cover body 241 and a second cover body 242, the first cover body 241 being configured with a guide surface 2411 facing the fan 270, a first side of the guide surface 2411 being higher than a second side of the guide surface 2411, the first side and the second side being opposite sides of the guide surface 2411; the fan cover 240 defining a second cavity 281, the fan 270 being arranged in the second cavity 281. The first cover body 241 can function to converge the water vapor above the fan 270, and guide the converged water droplets from the first side of the guide surface 2411 to the second side of the guide surface 2411, the arrangement of the first cover body 241 can facilitate the convergence and discharge of the water vapor in the second cavity 281, reduce the corrosion of the fan 270 by the water vapor, and prolong the service life of the fan 270.

[0230] The air duct assembly 200 further comprises a fan 270, a rotating axis of the fan 270 forming a first included angle a1 with the vertical direction, the fan cover 240 being provided with a ventilation opening 244, an inlet of the fan 270 facing the ventilation opening 244, the second cavity 281 being in communication with an air outlet area of the first cavity 282 through the ventilation opening 244, and the second cavity 281 being in communication with the air outlet of the air duct assembly 200. The air in the first cavity 282 is sucked into the second cavity 281 through the ventilation opening 244 of the fan cover 240 by the fan 270, and under the action of the fan 270, the air in the second cavity 281 is discharged into the first chamber 410 or the second chamber 420 through the air outlet. That is, the second cavity 281 can be adjusted to be in communication with the first air outlet 203 and the second air outlet 204.

[0231] The rotating axis of the fan 270 forms a first included angle a1 with the vertical direction, which can be understood as that the front end of the rotating axis of the fan 270 is lower or higher than the rear end. In the case of meeting the ventilation and drainage requirements, the angle of the first included angle a1 is as small as possible, and the height difference between the front end and the rear end of the rotating axis of the fan 270 is as large as possible, that is, the fan 270 is arranged as horizontally as possible to reduce the space occupied by the fan 270 in the height direction, and thus reduce the size of the air duct assembly 200 in the height direction.

[0232] At this time, the ventilation opening 244 is arranged in a staggered manner with the drainage outlet of the first cavity 282, which can reduce the air in the drainage outlet being sucked out by the fan 270 as much as possible, prolong the heat exchange time of the air in the first cavity 282, and improve the heat exchange efficiency.

[0233] The fan cover 240 is fixed on the box body, and the air in the first cavity 282 is guided out by the fan 270 through the second cavity 281.

[0234] The first included angle a1 is greater than or equal to 7°, so that the water collected on the first side of the flow guide surface 2411 can flow along the slope of the surface to the second side, and the water is guided along the air duct component 220 below the fan 270 to the third drain 2423, avoiding the water collected on the surface of the first cover 241 from dripping into the fan 270, and preventing the water from falling into the fan 270 as much as possible. The first side of the flow guide surface 2411 is higher than the second side of the flow guide surface 2411, and the surface of the first cover 241 facing the fan 270 can be an inclined plane or a curved surface. When the flow guide surface 2411 is a plane, it is helpful to simplify the structure of the first cover 241 and facilitate processing. In addition, the water collected on the surface of the fan 270 falls and is discharged under the action of gravity.

[0235] The first included angle a1 needs to be less than 70° to achieve the purpose of reducing the height; the first included angle a1 can be less than 60°, 50°, 45°, 30°, 20°, or 10°, and the smaller the first included angle a1, the smaller the height direction size of the air duct assembly 200.

[0236] It should be noted that when the first included angle a1 is less than 7°, the exhaust air requirement can be met, and the height direction size of the air duct assembly 200 is smaller, but the water guide effect of the surface of the first cover 241 facing the fan 270 is not good, and the water drainage effect is difficult to meet the demand. If the first included angle a1 is less than 7°, the problem of water drainage of the fan cover 240 needs to be solved.

[0237] 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 communication relationship between the two cavities can be achieved. Taking the case that the second cavity 281 is located behind the first cavity 282 as an example, the fan 270 can be inclined by the first included angle a1 towards the front or inclined by the first included angle a1 towards the back, as shown in FIG. 8, the fan 270 is inclined by the first included angle a1 towards the front, and as shown in FIG. 9, the fan 270 is inclined by the first included angle a1 towards the back. Figure 14 Figure 8 That is, the upper end of the rotating axis of the fan 270 is inclined forward relative to the vertical direction to form the first included angle a1, or inclined backward to form the first included angle a1.

[0238] The fan 270 gradually inclines 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 air in the first cavity 282 to enter the inlet of the fan 270, and can improve the ventilation effect. The fan 270 gradually inclines downward from front to back, which can improve the space utilization. The foregoing structure can consider that the evaporator 230 and the fan 270 can share the drainage structure to simplify the structure; or, the evaporator 230 and the fan 270 adopt independent drainage structures for drainage, which can reduce the influence of drainage on the fan 270. For example,​Figure 5 , Figure 6 , Figure 12 and Figure 13 As shown, the drainage from the evaporator 230 is discharged from the first drainage component 260 on the left and right sides, and the drainage from the fan 270 is discharged from the rear end.

[0239] Understandably, the rotation axis of the fan 270 is collinear with the central axis of the vent 244. During the process of drawing air from the first chamber 282 into the second chamber 281 through the vent 244, the fan 270 has a good suction effect, which contributes to the effective air circulation within the duct assembly 200. In some cases, the shape of the vent 244 is adapted to the shape of the fan 270's inlet so that air from the first chamber 282 is drawn into the second chamber 281 by the fan 270 through the vent 244.

[0240] The rotation axis of the fan 270 is collinear with the central axis of the vent 244. Generally, the guide surface 2411 of the first shroud 241 is set parallel to the fan 270, or the area of ​​the first shroud 241 corresponding to the fan 270 is set parallel to the fan 270. The fan 270 is generally a centrifugal fan, which can change the direction of airflow, facilitating the delivery of air to the first chamber 410 or the second chamber 420. Of course, other fans 270 that can achieve the desired circulating airflow effect can also be used.

[0241] It is understandable that, such as Figures 4 to 6 As shown, the first cover 241 is located above the fan 270. The first side of the guide surface 2411 faces away from the drain plate 100, and the second side of the guide surface 2411 faces the drain plate 100. The first side of the guide surface 2411 is inclined upward at a second included angle α2 relative to the second side of the guide surface 2411, that is, in a direction away from the drain plate 100. The upward inclination of the guide surface 2411 of the first cover 241 at the second included angle α2 means that the vent 244 faces the air outlet direction of the first cavity 282, which helps the air in the first cavity 282 to enter the second cavity 281, thereby improving the ventilation effect. Furthermore, the evaporator 230 and the fan 270 can share a drainage structure to simplify the structure. Figures 14 to 16 as well as Figure 21 As shown, the air duct assembly 200 drains water from the second or third drain outlet 2423 at the rear end.

[0242] Combination Figures 12 to 25As shown, when the drain plate 100 includes the water guide portion and the drain portion 110, the drain portion 110 is configured with an outlet 114, and water received by the drain plate 100 flows along the water guide portion to the drain portion 110 and is discharged from the outlet 114. Due to this structure, a part of the wind also flows along the water guide portion and the drain portion 110 to the outlet 114. By setting the outlet 114 and the air vent 244 to be staggered, the wind flowing in the direction of the outlet 114 can be prevented from being directly discharged from the air vent 244, the time for heat exchange of the wind in the first cavity 282 is prolonged as much as possible, and the heat exchange efficiency is improved. Wherein, when the second cavity 281 is located behind the first cavity 282, the direction away from the drain plate 100 is the front-to-back direction. Of course, the first cavity 282 and the second cavity 281 can also be arranged left and right, and the direction away from the drain plate 100 is the left-right direction, and the working principle is the same as the front-to-back direction, which will not be described here. In combination with Figures 1 to 3 、 Figure 10 、 Figure 11 and Figures 17 to 19 , the second cavity 281 is located behind the first cavity 282.

[0243] Referring to Figures 1 to 3 、 Figure 10 、 Figure 11 and Figures 17 to 19 , the first cover 241 is located above the fan 270, the first side of the flow guide surface 2411 faces the drain plate 100, the second side of the flow guide surface 2411 faces away from the drain plate 100, and the second side of the flow guide surface 2411 is inclined downward by a third included angle a3 relative to the first side of the flow guide surface 2411, that is, in a direction away from the drain plate 100. The flow guide surface 2411 of the first cover 241 is inclined downward by a third included angle a3, and the first cover 241 guides the water flow to the rear of the fan 270, which helps to quickly discharge the collected water.

[0244] In some cases, the second included angle a2 and the third included angle a3 are set to be the same as the first included angle a1, so that the rotation axis of the fan 270 is collinear with the central axis of the air vent 244, to ensure the wind flow effect in the air duct assembly 200 and the wind circulation effect in the refrigeration equipment.

[0245] The drain plate 100, the fan cover 240, the water guide 223 and other components in the above embodiments all need to be supported and insulated by the air duct component 220. The structure of the air duct assembly 200 will be described below.

[0246] The air duct component 220 can be fixed to the tank body by being fixedly connected to the partition component 210, or the air duct component 220 can be directly fixedly connected to the tank body.

[0247] The air duct component 220 comprises a support plate and a second heat preservation layer 221 arranged below the drainage plate 100. The support plate is supported below the second heat preservation layer 221. The shape of the upper surface of the second heat preservation layer 221 is matched with the shape of the lower surface of the drainage plate 100, so that the second heat preservation layer 221 sufficiently insulates the drainage plate 100, reduces the outward diffusion of cold energy, and ensures the heat exchange efficiency.

[0248] When the lower surface of the drainage plate 100 is a curved surface, such as a wave shape, the upper surface of the second heat preservation layer 221 is a corresponding curved surface. When the lower surface of the drainage plate 100 is a plane, the upper surface of the second heat preservation layer 221 is a plane. The specific arrangement can be set according to the needs.

[0249] The support plate comprises a first support part 222 and a second support part 225 which is inclined downward along the first support part 222. The second support part 225 is located on the same side of the outlet 114 of the drainage plate 100 as the air duct assembly 200. The first support part 222 supports the second heat preservation layer 221. The third heat preservation layer 224 is arranged above the second support part 225. The water guide 223 or the fan cover 240 is arranged above the third heat preservation layer 224. The second support part 225 supports the third heat preservation layer 224 and the components above the third heat preservation layer 224, such as the water guide 223 or the fan cover 240.

[0250] The first support part 222 and the second support part 225 are independent parts, such as plate parts, which are connected by a detachable connection, such as plug-in connection, clamping connection, fasteners, etc. Alternatively, the first support part 222 and the second support part 225 are integrally formed, which can reduce the number of parts and simplify the assembly. In some cases, the water guide 223 and the drainage plate 100 are two independent parts. Of course, the water guide 223 and the drainage plate 100 can also be formed as an integral structure.

[0251] The air duct component 220 can be provided with an air inlet so that the return air in 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, the air inlet is provided on the support plate. Figure 13 As shown, the front end of the first support part 222 is provided with a second air inlet 202 which is in communication with the second chamber 420, so that the second chamber 420 returns air to the first cavity 282 through the second air inlet 202 at the front end of the air duct assembly 200.

[0252] Referring to Figures 36 to 38 As shown, the first side of the first cavity 282 is provided with a first air inlet 201, and the second side of the first cavity 282 is provided with a second air inlet 202. It can also be understood that the cross section of the first air inlet 201 and the cross section of the second air inlet 202 form an included angle perpendicular to the respective air inlet direction. The air inlet of the first air inlet 201 and the air inlet of the second air inlet 202 have different temperatures.

[0253] The air duct component 220 is provided with a partition 2221, a projection of the partition 2221 at the first air inlet 201 covers a partial area of the first air inlet 201, the projection of the partition 2221 at the first air inlet 201 is located at an end of the first air inlet 201 close to the second side, the partition 2221 is spaced apart from the first air inlet 201 by a preset distance a, the air flowing in the first air inlet 201 flows towards the partition 2221, and during the air flow, part of the air is guided along the extension direction of the partition 2221, and part of the air continues to flow in the air inlet direction. When the first air inlet 201 and the second air inlet 202 are simultaneously air-inletting, the amount of air that is in contact and exchanged between the air-inletting of the first air inlet 201 and the air-inletting of the second air inlet 202 can be reduced.

[0254] In the first cavity 282, the evaporator 230 is spaced apart from the second air inlet 202 at an end close to the second side, and most of the air-inletting of the first air inlet 201 and the second air inlet 202 meets and exchanges heat at this spacing, and then flows along the evaporator 230 to the air outlet; at this spacing, the partition 2221 guides part of the air-inletting of the first air inlet 201 to the extension direction of the partition 2221, which can reduce the amount of air that is in contact and exchanged between the air-inletting of the first air inlet 201 and the air-inletting of the second air inlet 202, thereby reducing the amount of frost at the end of the evaporator 230 close to the second side due to different air-inletting temperatures, avoiding the influence of the large amount of frost on the second side on the air-inletting amount of the first cavity 282, and solving the problem of short defrosting period caused by the large amount of frost on the second side. The defrosting period is appropriately extended, which plays a role in saving electricity. The provision of the partition 2221 allows the air-inletting of the first air inlet 201 and the air-inletting of the second air inlet 202 to be kept on both sides of the partition 2221 as much as possible.

[0255] Reference Figure 36 As shown in the figure, taking the example of aligning the first air inlet 201 with the edge of the air duct component 220, the preset distance a is the distance from the first side edge of the air duct component 220 to the partition 2221. It should be noted that the preset distance a is provided to ensure that there is a suitable flow space between the first air inlet 201 and the partition 2221, so that the air flows towards the first cavity 282, and the partition 2221 does not block the part of the first air inlet 201 corresponding to it. Therefore, the value of the preset distance a is not limited and can be selected as needed. The projection can be understood as a projection at the first air inlet 201 along the air-inletting direction of the first air inlet 201.

[0256] It should be noted that the air duct component 220 can be formed with the first air inlet 201 (not shown in the figure).

[0257] The evaporator 230 is arranged in the first cavity 282, and the fins 234 of the evaporator 230 extend along the direction from the second air inlet 202 to the air outlet (the direction from front to back in the drawing), so that the air at the spacing between the evaporator 230 and the second air inlet 202 can flow along the guiding direction of the fins 234 to the air outlet.

[0258] The partition 2221 extends along the direction from the second air inlet 202 to the air outlet, and part of the air of the first air inlet 201 flows into the evaporator 230 along the partition 2221. The partition 2221 is consistent with the extending direction of the fins 234, so that the partition 2221 cooperates with the fins 234 to guide the air to the direction of the air outlet.

[0259] In the direction from the first air inlet 201 to the partition 2221, the air duct component 220 is provided with a guide surface 2222, the guide surface 2222 is a curved surface, the partition 2221 is located at the first end of the guide surface 2222 and is tangent to the first end, and the second end of the guide surface 2222 extends toward the first wall surface limiting the first air inlet 201. Part of the air entering the first cavity 282 from the first air inlet 201 can flow along the guiding path of the guide surface 2222, that is, the part of the air flows along the curved surface of the guide surface 2222. The flow direction of the part of the air is changed by the guide surface 2222, the part of the air flows along the extending direction of the partition 2221, the air flowing along the direction of the first air inlet 201 is reduced, and then the amount of air contacting heat exchange between the two parts of the air of the first air inlet 201 and the second air inlet 202 is reduced.

[0260] In some cases, the second end of the guide surface 2222 is perpendicular to the first wall surface limiting the first air inlet 201, so that the air of the first air inlet 201 flows along the guide surface 2222 to the partition 2221. Of course, the second end of the guide surface 2222 can also form an obtuse angle or an acute angle with the first wall surface, so that the air flows along the guide surface 2222. The specific structure of the guide surface 2222 can be selected as needed.

[0261] Reference Figure 37 and Figure 38 As shown in the drawings, 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 2221, 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 direction of the first wall surface, the curved portion 22221 plays a role in changing the flow direction of the air, the flat portion 22222 can guide the air to the curved portion 22221, and the flat portion 22222 cooperates with the curved portion 22221 to make the air of the first air inlet 201 flow more smoothly.

[0262] In some cases, the flat portion 22222 extends to the first wall surface. However, the flat portion 22222 can also be spaced apart from the first wall surface, and the specific positional relationship between the flat portion 22222 and the first wall surface is not limited.

[0263] The air duct component 220 is provided with a second air inlet portion configured to form the second air inlet 202. The two ends of the second air inlet portion are provided with a partition portion 2221. The first side includes two side surfaces adjacent to the second side, that is, the two sides adjacent to the second air inlet 202 are provided with the first air inlets 201. The partition portion 2221 at the two ends of the second air inlet portion can separately separate the part of the air inlet corresponding to the first air inlets 201, which is simple in structure and good in symmetry.

[0264] The air duct component 220 is provided with a guide plate 2223 connected between the edge of the air duct component 220 and the partition portion 2221. The guide plate 2223 is located below the partition portion 2221 and the guide surface 2222. The guide plate 2223 can support the partition portion 2221 to keep the partition portion 2221 at a predetermined height position, thereby ensuring the corresponding relationship between the air inlet of the first air inlet 201 and the partition portion 2221. At the same time, the air inlet of the first air inlet 201 can also flow along the guide plate 2223 to the direction of the air outlet.

[0265] The height of the partition portion 2221 is less than or equal to 1 / 3 of the height of the first air inlet 201, so that the partition portion 2221 separates the part of the air inlet in the height direction, and has less effect on the air inlet of the first air inlet 201, thereby ensuring the air inlet efficiency of the first air inlet 201.

[0266] The length of the partition portion 2221 is less than or equal to 1 / 3 of the length of the first air inlet 201, so that the partition portion 2221 separates the part of the air inlet in the length direction, and has less effect on the air inlet of the first air inlet 201, thereby ensuring the air inlet efficiency of the first air inlet 201. Here, the length of the partition portion 2221 is the length extending in the direction of the air duct component 220 to the evaporator 230.

[0267] The partition portion 2221 is integrally formed on the air duct component 220, and does not need to be independently processed and installed, thereby simplifying the assembly process of the air duct assembly 200 and saving assembly time. Alternatively, the air duct component 220 can be detachably connected with the partition portion 2221. The structure and shape of the partition portion 2221 can be selected or replaced according to actual needs, so that the structure of the air duct assembly 200 is more flexible and diverse.

[0268] The air duct component 220 comprises a support plate and a thermal insulation layer, the support plate serves to support the thermal insulation layer and components thereon, and the support plate is configured with the second air inlet 202. In some cases, the partition 2221 is integrally formed or detachably connected to the support plate, and in this case, the guiding surface 2222 is also part of the surface of the support plate; of course, it is not excluded that the partition 2221 is integrally formed or detachably connected with the thermal insulation layer.

[0269] The above-mentioned embodiments of the partition 2221 and the guiding surface 2222 and the deflector 2223 associated with the partition 2221 can also be provided on the baffle component 210, and the baffle component 210 and at least one of the air duct components 220 have the above-mentioned functions.

[0270] Based on the above description of the drainage plate 100, the air duct component 220 can support the above-mentioned embodiment of the drainage plate 100. The air duct component 220 comprises a support plate and a thermal insulation layer above the support plate; the support plate comprises the first support part 222 and the second support part 225, and the thermal insulation layer comprises the second thermal insulation layer 221 and the third thermal insulation layer 224, the second thermal insulation layer 221 is arranged above the first support part 222, and the drainage plate 100 is arranged above the second thermal insulation layer 221.

[0271] Reference Figures 20 to 25 As shown, when the structure of the drainage plate 100 is: comprising a drainage part 110 and a water guide part, the drainage part 110 is configured with an outlet 114, and the drainage part 110 is recessed relative to the top surface of the drainage plate 100; the water guide part is in communication with the drainage part 110, the water guide part is recessed relative to the top surface of the drainage plate 100, the extension direction of the water guide part forms a fifth included angle with the air outlet direction above the drainage plate 100, the direction towards the drainage part 110, the bottom of the water guide part is inclined along a first direction, and the first direction forms a sixth included angle θ2 with the top surface of the drainage plate 100. The water guide part here can be understood as the first water guide part 120 in the above-mentioned embodiment.

[0272] The upper surface of the second thermal insulation layer 221 is adapted to the lower surface of the drainage plate 100, when the drainage plate 100 is a wave plate, the upper surface of the second thermal insulation layer 221 is a wave-shaped surface adapted thereto, and the shape of the lower surface of the second thermal insulation layer 221 can be set as needed, such as a plane extending in the horizontal direction, so that the lower surface of the air duct component 220 can also be configured as a plane extending in the horizontal direction, and the lower surface of the air duct assembly 200 is regular in shape and simple in appearance structure.

[0273] Reference Figure 37As shown, the lower surface of the second heat preservation layer 221 is configured with a first support inclined surface inclined along the first direction, and the first support part 222 is configured with a second support inclined surface 2224 matched with the first support inclined surface, and the first support inclined surface and the second support inclined surface 2224 are easy to process and can reduce the thickness of the air duct assembly 200.

[0274] The second heat preservation layer 221 is also configured with a first support groove matched with the drainage part 110, and the first support part 222 is configured with a second support groove 2225 matched with the first support groove, and the rear end opening 170 of the second support groove 2225 is communicated with the drainage structure to facilitate the drainage of the defrosting water received by the drainage plate 100.

[0275] The evaporator 230 above the drainage plate 100 will be described below.

[0276] Reference Figures 18 to 20 As shown, the evaporator 230 is transversely arranged in the first cavity 282 of the air duct assembly 200, and the drainage plate 100 is arranged below the evaporator 230. The top surface of the drainage plate 100 is parallel to the bottom surface of the evaporator 230. Among them, Figure 1 、 Figure 2 、 Figure 10 And Figure 11 The evaporator 230 above the drainage plate 100 is used to place the evaporator 230, but the structure of the evaporator 230 is not shown in the figure.

[0277] The evaporator 230 is transversely arranged, which can be understood as that the height of the evaporator 230 is less than the length and width.

[0278] The drainage plate 100 is arranged below the evaporator 230, the drainage plate 100 is provided with a water guide part recessed relative to the top surface, and the angle between the evaporator 230 and the horizontal direction is less than or equal to a preset angle.

[0279] Among them, the angle between the evaporator 230 and the horizontal direction is less than or equal to a preset angle, which can be understood as 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 connecting line between the end of the evaporator 230 facing the air outlet and the end facing the air inlet forms a preset angle with the horizontal plane. The connecting line can be located on the bottom surface of the evaporator 230 or the height direction symmetry plane. When the shape of the evaporator 230 is a cuboid, the bottom surface of the evaporator 230 and the symmetry plane both form a preset angle with the horizontal direction.

[0280] 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 be less than or equal to 7° here, in order to reduce the height of the air duct assembly 200. In the case where the height of the air duct assembly 200 is not strictly limited, the preset angle can be appropriately increased.

[0281] Alternatively, the drainage plate 100 is provided with a water guide portion that is recessed relative to the top surface, which can also enable the evaporator 230 to be horizontally positioned in the first cavity 282, thereby significantly reducing the height of the air duct assembly 200.

[0282] The angle formed between the evaporator 230 and the horizontal direction is less than or equal to a preset angle, so as to reduce the vertical space occupied by the evaporator 230, thereby reducing the overall height of the air duct assembly 200 and achieving the purpose of expanding the capacity of the refrigeration equipment.

[0283] Among them, combined Figures 3 to 14 The structure of the drainage plate 100 shown can be preset at an angle of 7°, which can meet the defrosting and drainage requirements of the evaporator 230, while reducing the overall height of the air duct assembly 200.

[0284] It is understandable that the evaporator 230 can be horizontally installed above the drain plate 100. This can be understood as the bottom surface of the evaporator 230 being parallel to the horizontal plane. Compared to the case where the evaporator 230 is installed at an angle, the height of the installation space required for the horizontally installed evaporator 230 is reduced. Consequently, the height dimension of the air duct assembly 200 can be reduced, and the space occupied by the air duct assembly 200 within the cabinet body is reduced. Without changing the external dimensions of the cabinet body, the capacity of the cabinet body can be effectively increased, so as to provide a large-capacity refrigeration device.

[0285] 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.

[0286] It is understandable that the top surface of the drain plate 100 is flat and parallel to the horizontal plane, meaning that the bottom surface of the evaporator 230 and the top surface of the drain plate 100 are both placed horizontally. The bottom surface of the evaporator 230 is parallel to or in contact with the top surface of the drain plate 100, reducing the gap between the evaporator 230 and the drain plate 100. This prevents air from flowing directly from the gap between the evaporator 230 and the drain plate 100 to the vent 244 within the first cavity 282, thus facilitating sufficient heat exchange within the first cavity 282.

[0287] It should be noted that minimizing the gap between the evaporator 230 and the drain plate 100 slows down the speed at which the air flows from the gap between the evaporator 230 and the drain plate 100 to the vent 244, and prolongs the time the air stays in the first cavity 282, so that the air can fully exchange heat with the evaporator 230 in the first cavity 282 before flowing out, thus ensuring heat exchange efficiency.

[0288] In the above real-time example, the evaporator 230 is part of a refrigeration system in the refrigeration device, the refrigeration system includes a compressor, a condenser, a throttling element and the evaporator 230, and the refrigerant in the refrigeration system is evaporated in the evaporator 230 to provide a cooling environment for the air in the first cavity 282.

[0289] The structure of the evaporator 230 will be described below. It should be noted that the evaporator 230 is installed in the air duct assembly as an example, but the evaporator 230 is not limited to being applied to the air duct assembly 200, and can also be installed in other applicable environments.

[0290] The evaporator 230 includes heat exchange pipes 233 and heat dissipation fins 234 connected to the heat exchange pipes 233, and the heat dissipation fins 234 are configured with ventilation portions 23421 through which the air inlet of the first air inlet 201 passes, so that the air inlet of the first air inlet 201 flows to the inside of the evaporator 230 through the ventilation portions 23421, so that the air inlet of the first air inlet 201 is fully heat exchanged.

[0291] It should be noted that some of the heat dissipation fins 234 can be provided with ventilation portions 23421, or all of the heat dissipation fins 234 can be provided with ventilation portions 23421, which can be selected as needed.

[0292] Below, taking some of the heat dissipation fins 234 provided with ventilation portions 23421 as an example, the structure of the evaporator 230 will be described.

[0293] The evaporator 230 includes heat exchange pipes 233, first heat dissipation fins 2341 and second heat dissipation fins 2342, the first heat dissipation fins 2341 and the second heat dissipation fins 2342 are connected to the heat exchange pipes 233, a plurality of first heat dissipation fins 2341 are arranged side by side to form a first heat dissipation portion, at least one side of the first heat dissipation portion is provided with a second heat dissipation fin 2342 (when the evaporator is installed in the air duct assembly, the second heat dissipation fin 2342 is arranged between the first heat dissipation fin 2341 and the first air inlet 201), and the second heat dissipation fin 2342 is configured with ventilation portions 23421 through which the air inlet of the first air inlet 201 passes, so that part of the air inlet of the first air inlet 201 flows into the evaporator 230 through the ventilation portions 23421, thereby reducing the amount of air exchanged by the air inlet of the first air inlet 201 and the air inlet of the second air inlet 202, and reducing the frost condensed by the air exchange between the air inlet of the first air inlet 201 and the air inlet of the second air inlet 202.

[0294] The second heat dissipation fin 2342 of the evaporator 230 divides the air inlet of the first air inlet 201, has little effect on the overall structure of the air duct assembly 200, only needs to replace some of the heat dissipation fins 234 with the second heat dissipation fin 2342 with ventilation portions 23421, has a simple structure, and has good air inlet division effect.

[0295] The second heat dissipation fin 2342 is located on at least one side of the first heat dissipation fin 2341, that is, the first air inlet 201 is arranged on one side of the air duct assembly 200, and then the second heat dissipation fin 2342 is located on the corresponding side. The air duct assembly 200 is provided with the first air inlet 201 on the opposite sides, and then the first heat dissipation fin 2341 is provided with the second heat dissipation fin 2342 on both sides. The surface of the second heat dissipation fin 2342 faces the first air inlet 201, the second air inlet 202 is located at one end of the second heat dissipation fin 2342, and the air outlet is located at the other end of the second heat dissipation fin 2342.

[0296] The number of the second heat dissipation fin 2342 can be set as required, and the second heat dissipation fin 2342 is provided with one or more. When the second heat dissipation fin 2342 is provided with one, part of the air inlet of the first air inlet 201 flows to the space between the second heat dissipation fin 2342 and the first heat dissipation fin 2341 through the ventilation part 23421, and flows in the direction of the air outlet along the space between the second heat dissipation fin 2342 and the first heat dissipation fin 2341. When the second heat dissipation fin 2342 is provided with multiple, the air flows through the ventilation part 23421 of the second heat dissipation fin 2342 and flows along the space between the adjacent second heat dissipation fins 2342 and the space between the second heat dissipation fin 2342 and the first heat dissipation fin 2341 to the air outlet. The flow space of the air is larger and the flowability is better.

[0297] The ventilation part 23421 of the adjacent second heat dissipation fin 2342 is connected in a straight line, that is, in the two adjacent second heat dissipation fins 2342, the orthographic projection of the ventilation part 23421 of one second heat dissipation fin 2342 covers the orthographic projection of the ventilation part 23421 of the other second heat dissipation fin 2342, so that part of the air can flow smoothly through the ventilation part 23421 in the direction of the first heat dissipation fin 2341.

[0298] The ventilation part 23421 of the adjacent second heat dissipation fin 2342 is connected in a straight line, that is, in the two adjacent second heat dissipation fins 2342, the orthographic projection of the ventilation part 23421 of one second heat dissipation fin 2342 covers the orthographic projection of the ventilation part 23421 of the other second heat dissipation fin 2342, so that part of the air can flow smoothly through the ventilation part 23421 in the direction of the first heat dissipation fin 2341.

[0299] Among them, the two adjacent second heat dissipation fins 2342 can have ventilation parts 23421 connected in a straight line and ventilation parts 23421 connected in a staggered manner, and the structure is more diverse.

[0300] When the second heat dissipation fins 2342 are provided in plurality, the cross-sectional area of the ventilation portion 23421 can gradually decrease from the outside of the evaporator 230 to the direction of the first heat dissipation fins 2341, the air inlet amount through the ventilation portion 23421 decreases in the direction of the first heat dissipation fins 2341, the decrease of the cross-sectional area of the ventilation portion 23421 has little effect on the flow of air, and the heat dissipation area of the second heat dissipation fins 2342 can be ensured.

[0301] The ventilation portion 23421 includes at least one of a through hole with a closed loop and a through hole with an opening, the structure of the ventilation portion 23421 is various, and the processing is simple.

[0302] 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 various, and the structure is simple.

[0303] The shape of the ventilation portion 23421 is at least one of a closed rectangle, a circle, an ellipse, a trapezoid, and a triangle, or the shape of the ventilation portion 23421 is at least one of a rectangle, a circle, an ellipse, a trapezoid, and a triangle with an opening, such as a rectangle with one end opening 170, a circle with a notch, an ellipse with a notch, etc.

[0304] Of course, the shape of the ventilation portion 23421 is not limited to the above-mentioned shapes, and the specific shape of the ventilation portion 23421 can be set as needed.

[0305] Both sides of the evaporator 230 are provided with first air inlets 201, a plurality of first heat dissipation fins 2341 are arranged side by side to form a first heat dissipation portion, second heat dissipation fins 2342 are symmetrically arranged on both sides of the first heat dissipation portion, the evaporator 230 is provided with ventilation portions 23421 corresponding to the positions of the two first air inlets 201, and part of the air inlets of the two first air inlets 201 can be shunted through the ventilation portions 23421.

[0306] Reference Figure 13 As shown, the left and right sides of the air duct assembly 200 are provided with return air components 430, the return air components 430 are communicated with the first air inlets 201, and air inlets on both sides of the air duct assembly 200 are realized.

[0307] The first heat dissipation fins 2341 and the second heat dissipation fins 2342 are arranged above the drain plate 100 to receive defrosting water of the evaporator 230 through the drain plate 100, the structure is simple, and the evaporator 230 is convenient to install.

[0308] The evaporator 230 can also be provided with a gravity sensor, the weight change of the evaporator 230 is obtained through the gravity sensor, whether the evaporator 230 needs to be defrosted is determined according to the weight change, the evaporator 230 can also be provided with a vibrator, the vibrator provides a vibration force, and can play an auxiliary defrosting role.

[0309] The heating structure for defrosting inside the air duct assembly 200 is described below.

[0310] As shown in Figure 20 some cases, a first heater 231 is arranged above the drain plate 100, that is, the first heater 231 is arranged between the drain plate 100 and the evaporator 230. When the evaporator 230 needs to be defrosted, 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 fins 234 of the evaporator 230 are provided with a clamping groove for mounting the first heater 231. The first heater 231 is clamped to the fins 234 through the clamping groove. The clamping groove can be arranged at the lower position of the fins 234, so that the first heater 231 is located between the drain plate 100 and the heat exchange pipe 233. At this time, the installation of the first heater 231 is simple and the defrosting effect is good.

[0311] Of course, the heating structure for defrosting is not limited to being arranged between the drain plate 100 and the evaporator 230. In some cases, the heating structure can be arranged between the heat exchange pipes 233 of the evaporator 230, such as the second heater 232 inserted into the fins 234 of the evaporator 230. The insertion structure is simple and easy to install, which helps to improve the installation efficiency. The fins 234 are provided with mounting holes 2343, and the second heater 232 is inserted into the mounting holes 2343. The structure is simple and easy to disassemble and assemble.

[0312] The second heater 232 extends from the first end to the second end of the evaporator 230. The first end and the second end are opposite ends, so as to sufficiently provide heat to the evaporator 230. Here, the second end and the first end are two ends forming an angle with the extension direction of the fins 234, such as the left end and the right end of the evaporator 230.

[0313] The second heater 232 can be inserted between the two rows of heat exchange pipes 233 to uniformly heat the heat exchange pipes 233 in the upper and lower rows. At this time, the heat exchange efficiency of the second heater 232 and the heat exchange pipes 233 and the fins 234 on the heat exchange pipes 233 is higher, and the efficiency of heating and defrosting is also improved.

[0314] The second heater 232 is distributed in multiple layers along the height direction of the evaporator 230, so as to heat multiple positions of the evaporator 230.

[0315] The second heater 232 includes a plurality of fixedly connected heating rods. The plurality of heating rods are fixedly connected as a whole, and are directly inserted as a whole on the fins 234 during assembly. The assembly is simple and efficient.

[0316] The second heater 232 includes a plurality of independent heating rods. The positions of the heating rods are flexible, and the heating rods are convenient to replace independently. The heating rods are also more convenient to disassemble and assemble.

[0317] When the second heater 232 comprises a plurality of independent heating rods, the heating rods can be staggered along the height direction of the evaporator 230, which can reduce the number of heating rods and also fully defrost the evaporator 230.

[0318] When the heating structure is not arranged between the drain plate 100 and the evaporator 230, the evaporator 230 can be directly placed 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.

[0319] The heating structure can be a heating element 160 arranged on the surface of the drain plate 100. The heating element 160 can be integrated with the drain plate 100 in an integrated structure. The drain plate 100 with the heating element 160 can be installed below various structures of the evaporator 230. The drain plate 100 can not only receive and drain defrosting water but also heat the defrosting water. The drain plate 100 has a dual function. The drain plate 100 installed in the air duct assembly 200 can reduce the height of the air duct assembly 200.

[0320] It should be noted that the drain plate 100 with the heating element 160 can be arranged below the horizontally arranged evaporator 230. Alternatively, the drain plate 100 with the heating element 160 can be arranged below the evaporator 230 vertically installed in the cabinet 400. The application scenarios of the drain plate 100 are not limited here.

[0321] The heating element 160 can be integrally formed with the drain plate 100 of any one of the above embodiments. Alternatively, the heating element 160 can be integrally formed with other drain plates 100 that can receive and drain defrosting water, so that the drain plate 100 can be widely used in various occasions.

[0322] 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 defrosting water. The heating element 160 located on the lower surface of the drain plate 100 can avoid direct contact with water and can avoid electric shock accidents caused by circuit failure, so that the safety performance of the refrigeration equipment is better.

[0323] Of course, the heating element 160 can also cover the upper surface of the drain plate 100 under the condition of ensuring the waterproof performance of the heating element 160.

[0324] The heating element 160 can be a heating wire or a heating film arranged on the surface of the drain plate 100.

[0325] The following will be described taking the heating element as a heating film as an example.

[0326] The heating piece 160 comprises an insulating layer and a composite heating layer arranged on the lower surface of the insulating layer, the insulating layer is connected to the lower surface of the drain plate 100, and the drain plate 100 and the composite heating layer are insulated and protected by the insulating layer, so that the risk of electric leakage can be reduced. At this time, the material of the drain plate 100 is not limited, and the drain plate 100 can be made of steel, which is simple to process and can also ensure the heat conduction effect of the drain plate 100.

[0327] The heating piece 160 comprises a composite heating layer, the drain plate 100 is of an insulating and heat-conducting structure, the composite heating layer is arranged on the lower surface of the drain plate 100, and the drain plate 100 has both heat conduction and insulation functions, so that the insulating layer can be omitted, the processing process of the drain plate 100 is more simple, and the production efficiency can be improved. The drain plate 100 can be a structure composed of ceramic and glass fiber material.

[0328] The composite heating layer of the heating piece 160 can be a graphene heating layer, a nano heating layer, a carbon fiber heating layer, or a heating layer composed of multiple electric heating materials. When the composite heating layer is electrified, the electric energy can be converted into heat energy of the heating piece 160 to provide heat for defrosting. For example, the composite heating layer is a graphene heating layer. The graphene heating layer is a planar film composed of carbon atoms in a hexagonal honeycomb lattice, only one atom thick, so that the thickness of the heating piece 160 can be controlled.

[0329] It should be noted that when the heating piece 160 is arranged on the lower surface of the drain plate 100, an insulating and heat-insulating layer is further arranged below the composite heating layer, so that the heat can be reduced to diffuse downward, and the heating efficiency can be ensured. The composite heating layer, the drain plate 100, and the insulating and heat-insulating layer are connected by a heat-conducting adhesive layer, which can realize reliable connection between the layers while realizing the heat conduction effect.

[0330] The heating piece 160 comprises a plurality of heating zones distributed along a certain direction, and the unit area heating power of the heating zones gradually increases along the certain direction. The heating power of the corresponding heating zone can be adjusted according to the different frost amounts at different positions, so that rapid and sufficient defrosting can be realized, and the power consumption can be reduced.

[0331] When the composite heating layer is a graphene heating layer, the grid distribution of the graphene heating layer in different heating zones is different, so that the resistance distribution of the graphene heating layer in different heating zones is different. The lower surface of the drain plate 100 can be distributed with graphene heating layers of two different resistances, of course, graphene heating layers of any number of different resistances can also be distributed. In addition, the graphene heating layers of different resistances can be connected in series, in parallel, or in different circuits.

[0332] The heating element 160 in the above embodiments is applied to the air duct assembly 200, and is used for defrosting of the evaporator 230, so that the space occupied by the heater can be reduced, the height of the air duct assembly 200 can be reduced, and the volume of the air duct assembly 200 is further reduced. The refrigeration equipment with the air duct assembly 200 can appropriately increase the storage space, and has the effect of expanding the capacity of the refrigeration equipment.

[0333] The drain plate 100 with the heating element 160 in the above embodiments can be used in combination with at least one of the first heater 231 and the second heater 232 to improve the defrosting efficiency.

[0334] It should be noted that the heating element 160 can be applied to the drain plate 100 in the above embodiments, but is not limited thereto, and the heating element 160 can also be applied to a drain plate of other structures.

[0335] The 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 pass through the wire hole of the fan cover 240, and the structure is simple and convenient to assemble.

[0336] The structure of the partition member 210 will be described below.

[0337] 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 arranged in the first cavity 282. The air inlet exchanges heat in the first cavity 282 and is then discharged from the air outlet. The air outlet sends air into the chamber to provide a refrigeration environment for the refrigeration equipment. When the air inlet includes a first air inlet 201 and a second air inlet 202, the first air inlet 201 and the second air inlet 202 include air inlets of different temperatures.

[0338] The partition member 210 can be fixedly connected to the cabinet body. For example, the edges of the partition member 210 are fixed to the cabinet body by welding, clamping, or fasteners. Figure 6 and Figure 20 As shown in FIGS. 1, 2, and 3, the partition member 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 thermal insulation layer 213. The first thermal insulation layer 213 is detachably arranged between the first plate body 211 and the second plate body 212, or the first thermal insulation layer 213 is integrally foamed and formed with the first plate body 211 and the second plate body 212.

[0339] When the first thermal insulation layer 213 is integrally foamed and formed with the first plate body 211 and the second plate body 212, the first plate body 211 and the second plate body 212 can be fixedly installed on the cabinet body, and the first thermal insulation layer 213 is integrally foamed and formed with the thermal insulation layer of the cabinet 400. The sealing performance between the partition member 210 and the cabinet body is better, and air leakage between the first chamber 410 and the second chamber 420 is avoided.

[0340] Referring to Figure 6 and Figure 20 As shown in FIG. 13, the partition component 210 further comprises a third plate body 214, the third plate body 214 and the first plate body 211 and the second plate body 212 define an installation space, the third plate body 214 is located in front of the air duct assembly 200, the installation space is located in front of the partition component 210, and the installation space is used to install functional components such as a controller, a lighting module, an interaction module, and a display module. When the second air inlet 202 is arranged on the front side of the air duct assembly 200, the part of the partition component 210 that defines the installation space is located at the front end of the second air inlet 202, and the part of the partition component 210 that defines the installation space functions to cover the second air inlet 202, so that the second air inlet 202 is hidden, and the lower part of the second air inlet 202 communicates with the second chamber 420.

[0341] It should be noted that the second air inlet 202 is not limited to being arranged on the front side of the air duct assembly 200, and the second air inlet 202 can also be arranged at a position close to the lower side of the air duct assembly 200.

[0342] Referring to Figures 26 to 28 As shown in FIG. 13, the partition component 210 and the air duct component 220 define a first cavity 282, the first air inlet 201, the second air inlet 202, and the air outlet, the first air inlet 201 and the second air inlet 202 comprise air inlets of different temperatures; the first air inlet 201 is located on a first side of the air duct assembly 200, and the second air inlet 202 is located on a second side of the air duct assembly 200, the first side and the second side are adjacent, or the first air inlet 201 and the second air inlet 202 are located on the same side; the partition component 210 is configured with an inner recess recessed toward the inside of the partition component 210, and the inner recess is adapted to guide part of the air inlet of at least one of the first air inlet 201 and the second air inlet 202 to flow into the inner recess, that is, part of the air inlet of at least one of the first air inlet 201 and the second air inlet 202 flows into the corresponding inner recess, so as to reduce the amount of air that is in contact with each other in the air inlets of the first air inlet 201 and the second air inlet 202, reduce the amount of frost in the air contact area, and thus prolong the time interval between two defrosting, reduce the defrosting frequency, and reduce the power consumption of defrosting.

[0343] Taking the first air inlet 201 and the second air inlet 202 as an example, the first air inlet 201 and the second air inlet 202 are located on different sides, and the air inlet directions intersect each other. During the air inlet process, part of the air of the first air inlet 201 is guided along the extension direction of the corresponding inner recess, and part of the air continues to flow along the air inlet direction. When the first air inlet 201 and the second air inlet 202 are in air inlet at the same time, the air that continues to flow along the air inlet direction intersects with the air inlet of the second air inlet 202, reducing the amount of air that flows in the air inlets of the first air inlet 201 and the second air inlet 202. The principle of arranging the inner recess in the corresponding area of the second air inlet 202 is the same, and details are not repeated here.

[0344] Taking the example that the first air inlet 201 and the second air inlet 202 are located at the same side (for example, both located at the front side) and the air inlet directions are the same, the extension direction of the inner recess is consistent with the extension direction of the corresponding air inlet, part of the air inlet of the first air inlet 201 flows along the extension direction of the corresponding inner recess, and the other part of the air inlet of the first air inlet 201 continues to flow along the flow direction thereof.

[0345] Referring to Figure 26 As shown in the figure, the inner recess includes a first inner recess 2121, the first inner recess 2121 extends along the second side of the partition component 210 to the third side by a first preset width L1 and a first preset length L2, the second air inlet 202 is located at the second side, and the third side is a side adjacent to the second side, and the third side can be the side where the air outlet is located. The first inner recess 2121 is close to the first side edge of the partition component 210, and the first air inlet 201 is located at the first side.

[0346] The air inlet from the first air inlet 201 into the first cavity 282 flows along the air inlet direction of the first air inlet 201 to cross and contact the air inlet of the second air inlet 202, and the other part flows along the extension direction of the first inner recess 2121. The first inner recess 2121 plays a guiding and shunting role to reduce the air volume of the air inlet of the first air inlet 201 and the air inlet of the second air inlet 202, thereby reducing the amount of frost.

[0347] 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, and 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 the direction from the air inlet to the air outlet.

[0348] Referring to Figure 26 As shown in the figure, the first inner recess 2121 is configured 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 along the direction away from the first top surface 2123, the first guide surface 2122 is located at the side away from the first air inlet 201, and the first guide surface 2122 guides the air flow in the direction of the air outlet, avoiding the accumulation of air in the groove limited by the first inner recess 2121, and ensuring the circulating flow effect of the air.

[0349] When the first side of the first cavity 282 includes two or more sides, for example, the first side is set to be opposite left and right sides, the first air inlet 201 is arranged on the left and right sides of the air duct assembly 200, and the two sides of the partition component 210 are symmetrically provided with the first inner recess 2121, each first inner recess 2121 corresponds to one first air inlet 201, and the air inlet of each first air inlet 201 is shunted by the first inner recess 2121.

[0350] 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 in FIGS. 12 and 13, one first guide surface 2122 is arranged on the rear side of the first inner recess 2121, and another first guide surface 2122 is arranged on the left side of the first inner recess 2121. Figure 26 In order to show the first guide surfaces 2122 arranged in different positions, in actual applications, the two first inner recesses 2121 are generally arranged symmetrically.

[0351] Referring to FIGS. 12 and 13, Figure 27 and Figure 28 As shown in FIGS. 12 and 13, the inner recess includes a second inner recess 2124, 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 air flowing along the groove limited by the second inner recess 2124, and the second air inlet 202 also divides part of the air, which can reduce the air flow of the air inlet of the first air inlet 201 and the air inlet of the second air inlet 202, and also can reduce the amount of frost.

[0352] The second inner recess 2124 extends along the second side of the partition member 210 to the third side by a second preset width L3 and a second preset length L4, and the second preset length L4 is less than the length of the evaporator 230 in the first cavity 282. The length of the evaporator 230 is the length along the second side to the third side. The second side and the third side herein can refer to the above explanations. The length of the second inner recess 2124 is less than the length of the evaporator 230, which avoids the air in the first inner recess 2121 directly flowing to the air outlet, and ensures that the air in the first inner recess 2121 exchanges heat with the evaporator 230 before being discharged from the air outlet.

[0353] The second inner recess 2124 is configured 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 along a direction away from the second top surface 2126, and the second guide surface 2125 faces the side where the air outlet is located. The air is guided downward by the inclined surface of the second guide surface 2125, so that the air can flow to the evaporator 230 sufficiently.

[0354] In some cases, the first inner recess 2121 and the second inner recess 2124 can be used in combination, that is, the partition member 210 is provided with both the first inner recess 2121 and the second inner recess 2124. At this time, the second inner recess 2124 is separated from the first inner recess 2121 by the third wall plate 215, and the recess depths of the first inner recess 2121 and the second inner recess 2124 are the same, which is simple in structure and convenient to process.

[0355] In the case that the partition component 210 is provided with both the first inner recess 2121 and the second inner recess 2124, the first preset length L2 is greater than or equal to the second preset length L4, the first inner recess 2121 sufficiently guides the air inlet of the first air inlet 201 to the direction of the air outlet, the second inner recess 2124 guides the air inlet of the second air inlet 202 to the direction of the air outlet, and the heat exchange effect of the air and the evaporator 230 can be ensured.

[0356] It should be noted that the air in the second inner recess 2124 can also include the air mixed after the air inlet of the first air inlet 201 and the air inlet of the second air inlet 202.

[0357] The evaporator 230 includes a heat exchange pipe 233 and a heat dissipation fin 234 connected to the heat exchange pipe 233. The heat dissipation fin 234 extends from the side where the second air inlet 202 is located to the side where the air outlet is located. The heat dissipation fin 234 can guide the air to flow from the side where the air inlet is located to the side where the air outlet is located.

[0358] The heat dissipation fin 234 is configured with a protruding portion that extends into the second inner recess 2124 to ensure that the air in the second inner recess 2124 can be sufficiently heat-exchanged with the heat dissipation fin 234.

[0359] Reference Figure 29 As shown, the partition component 210 is configured 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 of the first air inlet 201 and the second air inlet 202, increases the defrosting space, prolongs the time length of the air inlet end, reduces the defrosting frequency, prolongs the defrosting period, and saves the defrosting power consumption.

[0360] The first air inlet 201 and the second air inlet 202 are located on two adjacent sides. As shown in Figure 5 The first air inlet 201 is located on the left and right sides of the air duct assembly 200 and communicates with the first chamber 410 through the return air component 430. The second air inlet 202 is located on the front side of the air duct assembly 200. The first air inlet 201 and the second air inlet 202 are both located at the front position of the air duct assembly 200.

[0361] 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. At this time, the third inner recess 2127 can provide a larger intersection space for the air inlet of the first air inlet 201 and the air inlet of 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 also be increased, and the air volume of cross heat exchange can be appropriately reduced.

[0362] The third inner recess 2127 extends along the side of the second air inlet 202 to the side of the air outlet with a third preset width L5 and a third preset length L6, and the third preset length L6 is less than the length of the evaporator 230 in the first cavity 282. The length of the evaporator 230 is the length along the side of the second air inlet 202 to the side of the air outlet.

[0363] Reference Figure 29 As shown in the figure, the width direction of the third inner recess 2127 is perpendicular to the direction of the second air inlet 202 to the air outlet, and the third preset width L5 is the size in this direction, and the third preset length L6 is the length in the direction from the second air inlet 202 to the air outlet.

[0364] 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 along the direction away from the third top surface 2128, and the third guide surface 2129 faces the side of the air outlet. The third guide surface 2129 guides the air in the third inner recess 2127 to the direction of the evaporator 230, so that this part of the air is fully heat exchanged and then discharged.

[0365] Based on the above embodiments of the drain plate 100, the fan cover 240, the fan 270, the air duct component 220, the heating structure for defrosting, and the partition component 210, the following structure of the air duct assembly 200 is proposed, but the air duct assembly 200 is not limited to the following structure.

[0366] Combined Figures 1 to 13As shown, the air duct assembly 200 comprises a baffle component 210 and an air duct component 220, the baffle component 210 and the air duct component 220 are configured to communicate with each other to form a first cavity 282, an air inlet and an air outlet, the air inlet is divided into a first air inlet 201 and a second air inlet 202, a drain plate 100 is arranged in the first cavity 282, the drain plate 100 is configured with a water guide portion recessed downward relative to the top surface of the drain plate 100, the water guide portion extends to the edge of the drain plate 100 on both sides of the predetermined surface, so that the edge of the drain plate 100 forms an opening 170, the opening 170 is directed to the side where the first air inlet 201 is located, so that part of the air inlet of the first air inlet 201 is adapted to pass through the opening 170 and flow into the first cavity 282 along the extension direction of the water guide portion. The part of the air inlet of the first air inlet 201 is introduced into the first cavity 282 through the opening 170 and along the extension direction of the water guide portion, so that part of the air inlet of the first air inlet 201 is diverted, the amount of air that crosses and contacts the air inlet of the second air inlet 202 is reduced, and the frost condensed due to the crossing and contacting of the air inlet of the first air inlet 201 and the air inlet of the second air inlet 202 is reduced, the defrosting frequency is reduced, the defrosting cycle is prolonged, the power consumption required for defrosting is reduced, and the power consumption of the refrigeration equipment is reduced.

[0367] The water guide portion is at least one of Figures 1 to 13 As shown in the middle, at least one of the structures, 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.

[0368] It can be understood that the air duct assembly 200 further comprises a first drain component 260 located on the first side, the first drain component 260 communicates with the opening 170 of the drain plate 100, and the first drain component 260 is configured with a drain port. The first drain component 260 has the functions of draining and air inletting at the same time.

[0369] It can be understood that the air duct assembly 200 further comprises a fan cover 240, the fan cover 240 limits a second cavity 281, a fan 270 is arranged in the second cavity 281, the rotating axis of the fan 270 forms a first included angle α1 with the vertical direction, the fan cover 240 is provided with a ventilation opening 244, and the inlet of the fan 270 is directed to the ventilation opening 244. The fan 270 is transversely arranged in the fan cover 240, which can reduce the height of the fan 270, and in turn reduce the height of the air duct assembly 200, thereby facilitating the installation of a drawer below the air duct assembly 200.

[0370] It can be understood that an evaporator 230 is arranged in the first cavity 282, the drain plate 100 is located below the evaporator 230, the angle between the evaporator 230 and the horizontal direction is less than or equal to a predetermined angle, or the evaporator 230 is parallel to the horizontal direction, the evaporator 230 is transversely arranged and the downward inclination angle thereof 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.

[0371] 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 adopt the structure of the above embodiments, and will not be described here.

[0372] In combination Figures 10 to 25 As shown in FIG. 1, the air duct assembly 200 includes the partition component 210, the air duct component 220, the evaporator 230, and the drainage plate 100. The partition component 210 and the air duct component 220 are configured to form the first cavity 282, the first air inlet 201, the second air inlet 202, and the air outlet in communication. The first air inlet 201 is located at the first side of the first cavity 282, the second air inlet 202 is located at 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 drainage plate 100 is arranged in the first cavity 282. The drainage plate 100 is arranged below the evaporator 230 and is configured to have a water guide portion recessed downward relative to the top surface of the drainage plate 100 and the drainage portion 110. The drainage portion 110 is configured to have the outlet 114 and is in communication with the water guide portion. The extension direction of the drainage portion 110 and the extension direction of the water guide portion form a fifth included angle. The end of the water guide portion is configured to form the opening 170, and the opening 170 faces the first air inlet 201. The air of the first air inlet 201 is adapted to flow into the first cavity 282 along the extension direction of the water guide portion. The water guide portion plays a role in guiding the air of the first air inlet 201, so that part of the air of the first air inlet 201 flows into the first cavity 282 along the water guide portion, reducing the amount of air that contacts each other between the first air inlet 201 and the second air inlet 202, reducing the frost condensed due to the contact of air with different temperatures, prolonging the time interval between defrosting, reducing the number of defrosting, saving the power consumption of defrosting, and playing a role in saving power and energy.

[0373] At this time, the structure of the water guide portion can be the third water guide portion 140.

[0374] It can be understood that the outlet 114 of the drainage plate 100 and the air outlet are located on the same side of the first cavity 282, and the heat of the defrosting water flowing to the outlet 114 of the drainage plate 100 can play a role in defrosting for the fan 270 on the same side.

[0375] It can be understood that the top surface of the drainage plate 100 and the bottom surface of the evaporator 230 are both inclined downward at a preset angle, or the top surface of the drainage plate 100 and the bottom surface of the evaporator 230 are both parallel to the horizontal plane. The evaporator 230 is transversely arranged, and the downward inclination angle thereof 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.

[0376] The air duct assembly 200 further comprises a first drainage component 260 located at the first side, the first drainage component 260 surrounds and communicates with the opening 170, and the first drainage component 260 is configured with a first drainage port 262. The first drainage component 260 can be arranged in the foaming layer of the cabinet body 400 to increase the space of the chamber.

[0377] The air duct assembly 200 further comprises a fan cover 240, the fan cover 240 defines a second cavity 281, a fan 270 is arranged in the second cavity 281, the rotating axis of the fan 270 forms a first included angle α1 with the vertical direction, the fan cover 240 is provided with a ventilation opening 244, and the inlet of the fan 270 faces the ventilation opening 244. The fan 270 is horizontally arranged in the fan cover 240, the height of the fan 270 is reduced, and thus the overall height of the air duct assembly 200 is reduced.

[0378] 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 adopt the structures in the above embodiments, and details are not described herein.

[0379] In combination Figures 10 to 25 As shown in FIG. 1, the air duct assembly 200 comprises a partition component 210, an air duct component 220, an evaporator 230, and a drainage plate 100. The partition component 210 and the air duct component 220 are configured to define a first cavity 282, a first air inlet 201, a second air inlet 202, and an air outlet in communication. The first air inlet 201 is located at a first side of the first cavity 282, the second air inlet 202 is located at a 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 drainage plate 100 is arranged in the first cavity 282. The top surface of the drainage plate 100 is located below the evaporator 230. The drainage plate 100 is configured with a water guide portion and an outlet 114. The water guide portion is recessed relative to the top surface of the drainage plate 100 and communicates with the outlet 114. The extension direction of the water guide portion forms a fourth included angle with the air outlet direction of the first cavity 282.

[0380] At this time, the water guide portion can be at least one of the second water guide portion 130 and the third water guide portion 140.

[0381] The included angle between the evaporator 230 and the horizontal direction is less than or equal to a preset angle, or the evaporator 230 is arranged along the horizontal direction. The evaporator 230 is horizontally arranged, and the angle of downward inclination of the evaporator 230 can be less than or equal to 7° or horizontal. The space occupied by the evaporator 230 in the height direction is reduced, and thus the height of the air duct assembly 200 is reduced, which helps to increase the space of the refrigeration equipment.

[0382] The air duct assembly 200 further comprises a fan 270 located at one side of the first cavity 282, and the outlet 114 of the drain plate 100 is located towards the side where the fan 270 is located. The outlet 114 of the drain plate 100 is staggered with the inlet of the fan 270 to prevent water from flowing towards the fan 270.

[0383] The second air inlet 202 is located at the front side of the air duct assembly 200 and communicates with the second chamber 420, and the first air inlet 201 is located at at least one of the left side and the right side of the air duct assembly 200 and close to the front end, and the first air inlet 201 communicates with the first chamber 410 to return air through the front end of the air duct assembly 200.

[0384] The partition component 210, the air duct component 220, the first drain component 260, the second drain component 290, the fan 270, the fan cover 240, the drain plate 100, and the evaporator 230 can adopt the structures in the above embodiments, and details are not repeated here.

[0385] In combination Figures 1 to 25 As shown in the figure, the air duct assembly 200 comprises a partition component 210, an air duct component 220, a fan 270, an evaporator 230, and a drain plate 100. The partition component 210 and the air duct component 220 are configured to form a first cavity 282, a first air inlet 201, a second air inlet 202, and an air outlet in communication. The first air inlet 201 is located at a first side of the first cavity 282, the second air inlet 202 is located at a second side of the first cavity 282, and the first side and the second side are adjacent. The evaporator 230 is arranged in the first cavity 282. The drain plate 100 is arranged in the first cavity 282. The top surface of the drain plate 100 is located below the evaporator 230. The drain plate 100 is configured with a water guide portion recessed downward relative to the top surface of the drain plate 100. The water guide portion extends to the edge of the drain plate 100 on both sides of the predetermined surface, so that the edge of the drain plate 100 forms an opening 170 suitable for draining water, and the opening 170 is located towards the first side. The fan 270 is located at a third side of the first cavity 282. That is, the fan 270 and the drain position of the drain plate 100 are located at different sides, which can reduce the space occupied by the side where the fan 270 is located, thereby increasing the chamber space in the refrigeration equipment to provide a large-capacity refrigeration equipment.

[0386] The air duct assembly 200 further comprises a first drain component 260 located at the first side, and a drain passage of the first drain component 260 communicates with the opening 170. The first drain component 260 is configured with a drain port. The first drain component 260 can be formed in the foamed layer of the cabinet 400, without occupying the space of the chamber, effectively expanding the capacity of the chamber. The opening 170 side of the drain plate 100 drains water through the first drain component 260, and the structure of the first drain component 260 can refer to the above description.

[0387] 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 the angle of downward inclination of the evaporator 230 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.

[0388] The second air inlet 202 is located on the second side of the first cavity 282, the first side and the second side are adjacent, the second air inlet 202 has air with a different temperature from the first air inlet 201, and the interchamber communicated by the first air inlet 201 and the second air inlet 202 has different ambient temperatures.

[0389] The first side is at least one of the left side and the right side, and the first air inlet 201 and the first drainage component 260 are located on at least one of the left side and the right side; the second side is the front side, the second air inlet 202 is located on the front side, and the third side is the back side, and the fan 270 is located on the back side.

[0390] When the first interchamber 410 is a refrigeration chamber and the second interchamber 420 is a freezing chamber, the first air inlet 201 communicated with the refrigeration chamber is arranged on the left side and the right side of the air duct assembly 200, the second air inlet 202 communicated with the freezing chamber is arranged on the front side of the air duct assembly 200, the front end of the second air inlet 202 is shielded by the partition component 210, the second air inlet 202 is communicated with the freezing chamber through the lower part of the partition component 210, and the fan 270 is arranged on the back side of the air duct assembly 200, and the fan 270 discharges air from the air outlet.

[0391] The air duct assembly 200 further comprises a fan cover 240 arranged between the partition component 210 and the air duct component 220, the fan cover 240 is configured to form a second cavity 281, the fan 270 is arranged in the second cavity 281, the fan cover 240 is configured to form an air vent 244, the inlet of the fan 270 faces the air vent 244, and the fan cover 240 plays a role of protecting the fan 270.

[0392] The rotation axis of the fan 270 and the vertical direction form a first angle α1, which can reduce the size of the fan 270 in the height direction. The air vent 244 is located above the fan 270, so that the fan 270 is supported by the air duct component 220, and the position above the fan 270 corresponds to the position of the evaporator 230. The central axis of the air vent 244 is collinear with the rotation axis of the fan 270, so as to ensure that the air in the first cavity 282 is smoothly guided out of the air outlet by the fan 270.

[0393] The fan cover 240 is configured to form a flow guide surface 2411 located above the fan 270 and facing the fan 270, the flow guide surface 2411 is inclined upward or downward along the side facing the drainage plate 100, and the flow guide surface 2411 can play a role of collecting water vapor and discharging the collected water from one side of the fan cover 240.

[0394] 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 adopt the structures in the above embodiments, and details are not repeated here.

[0395] Referring to Figures 1 to 13 As shown in the figure, the air duct assembly 200 includes the partition component 210, the air duct component 220, the fan 270, the evaporator 230, and the drainage plate 100. The partition component 210 and the air duct component 220 are configured to form the first cavity 282, the first air inlet 201, the second air inlet 202, and the air outlet in communication. The first air inlet 201 is located at the first side of the first cavity 282, the second air inlet 202 is located at 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 drainage plate 100 is arranged in the first cavity 282. The drainage plate 100 is arranged below the evaporator 230. The drainage plate 100 is configured with the opening 170 and the outlet 114. The opening 170 faces the first side, and the outlet 114 faces the third side. The first drainage component 260 is arranged at the first side and is configured with the drainage channel in communication with the opening 170, so that the water on the drainage plate 100 is guided into the first drainage component 260 through the opening 170. The second drainage component 290 is arranged at the third side and is configured with the water guide channel in communication with the outlet 114. The first drainage component 260 cooperates with the second drainage component 290, so that the air duct assembly 200 can drain water from different sides, the drainage path is increased, and the defrosting water collected by the drainage plate 100 can be drained from multiple directions, which can improve the defrosting and drainage efficiency.

[0396] The air duct assembly 200 further includes the fan cover 240 and the fan 270 arranged in the fan cover 240. The second drainage component 290 is arranged in or below the fan cover 240. The fan cover 240 is configured with the ventilation opening 244. The rotational axis of the fan 270 forms a first included angle with the vertical direction. The inlet of the fan 270 faces the ventilation opening 244. The fan 270 is installed horizontally, which helps to reduce the height of the air duct assembly 200.

[0397] The included angle between the evaporator 230 and the horizontal direction is less than or equal to a preset angle. The evaporator 230 is horizontally arranged and the downward inclination angle thereof is 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.

[0398] 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 adopt the structures in the above embodiments, and details are not repeated here.

[0399] Referring to Figures 10 to 16As shown, the air duct assembly 200 comprises 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 are configured to form a first cavity 282, an air inlet and an air outlet in communication, 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 configured with a drain part 110 and a water guide part, the drain part 110 is configured with an outlet 114, and the drain part 110 is recessed relative to the top surface of the drain plate 100; the water guide part is in communication with the drain part 110, and the water guide part is recessed relative to the top surface of the drain plate 100, and the extension direction of the water guide part forms a fifth included angle with the air outlet direction of the first cavity 282; the fan cover 240 is configured to form an air vent 244, a second cavity 281 and a water guide channel, the second cavity 281 is in communication with the first cavity 282 through the air vent 244, and the water guide channel is in communication with the outlet 114; the fan 270 is located in the second cavity 281, and the rotation axis of the fan 270 forms a first included angle with the vertical direction, and the inlet of the fan 270 is in communication with the first cavity 282 through the air vent 244. The drain water through the fan cover 240 for installing 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 assemble more simply; the fan 270 is transversely arranged, which can also reduce the height of the air duct assembly 200.

[0400] The water guide channel is inclined downward in the direction away from the outlet 114, so as to guide the water through the inclined angle to quickly and completely drain the water.

[0401] The included angle between the evaporator 230 and the horizontal direction is less than or equal to a preset angle, the evaporator 230 is transversely arranged and the downward inclination angle thereof 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.

[0402] The air duct component 220 and the baffle component 210 are configured to form the air inlet and the air outlet in communication with the first cavity 282, and the drain part 110 extends in the direction from the air inlet to the air outlet, so that the water of the outlet 114 of the drain plate 100 is drained through the water guide channel of the fan cover 240.

[0403] The air inlet comprises a first air inlet 201 and a second air inlet 202, the first air inlet 201 and the second air inlet 202 have air inlets with different temperatures, and the first air inlet 201 and the second air inlet 202 are located at different sides of the first cavity 282. The first air inlet 201 is located at the first side of the first cavity 282, and the second air inlet 202 is located at the second side of the first cavity 282, the first side and the second side are adjacent, and the first air inlet 201 is located close to the front side to take in air from the front end of the air duct assembly 200.

[0404] The components such as the partition plate 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 adopt the structures in the above embodiments, and details are not described herein.

[0405] Reference Figures 1 to 38 As shown in FIG. 1, the air duct assembly 200 includes the partition plate component 210, the air duct component 220, the fan 270, the evaporator 230, the drainage plate 100, and a shunt part. The partition plate component 210 and the air duct component 220 are configured to form a first cavity 282, an air inlet, and an air outlet in communication with each other. The evaporator 230 is arranged in the first cavity 282. The drainage plate 100 is arranged in the first cavity 282. The drainage plate 100 is arranged below the evaporator 230. The shunt part is arranged in at least one of the partition plate component 210 and the air duct component 220, and is used to guide part of the air inlet of the first air inlet 201 to flow along the guide direction of the shunt part. The shunt part plays a role of shunting part of the air inlet of the first air inlet 201, thereby reducing the air volume of the air inlet of the first air inlet 201 and the air inlet of the second air inlet 202, reducing frost caused by different temperatures, prolonging the interval time between two defrosting, and reducing the power consumption of defrosting.

[0406] The structure of the shunt part can refer to the structure shown in FIG. 2. Figures 21 to 38

[0407] The shunt part is a first inner recess 2121 arranged in the partition plate component 210. The first inner recess 2121 is recessed towards the inner side of the partition plate component 210. The first inner recess 2121 is adapted to guide part of the air inlet of the first air inlet 201 to flow into the first inner recess 2121. The first air inlet 201 is arranged at least one of the left side and the right side of the first cavity 282.

[0408] The air duct assembly 200 further includes the evaporator 230 arranged in the first cavity 282. The evaporator 230 includes heat exchange pipes 233 and heat dissipation fins 234. The heat dissipation fins 234 include first heat dissipation fins 2341 and second heat dissipation fins 2342. The first heat dissipation fins 2341 are connected to the heat exchange pipes 233. A plurality of first heat dissipation fins 2341 are configured to form a first heat dissipation part. The second heat dissipation fins 2342 are connected to the heat exchange pipes 233. The second heat dissipation fins 2342 are arranged at least one side of the first heat dissipation part. The shunt part is a ventilation part 23421 arranged in the second heat dissipation fin 2342. The projection of the first heat dissipation fin 2341 on the second heat dissipation fin 2342 covers the ventilation part 23421. The projection of the first air inlet 201 on the second heat dissipation fin 2342 covers the ventilation part 23421. The first heat dissipation fin 2341 and the second heat dissipation fin 2342 both extend along the second side to the third side. The third side is the side where the air outlet is located. The specific implementation and effects of the ventilation part 23421 can refer to the above embodiments of the evaporator 230, and details are not described herein. ​

[0409] 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 the angle of downward inclination of the evaporator 230 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.

[0410] The 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 adopt the structures in the above embodiments, which will not be described here.

[0411] In combination Figures 1 to 25 As shown in the figure, the air duct assembly 200 includes the partition component 210, the air duct component 220, the evaporator 230, and the drainage 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 in communication with 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 drainage plate 100 is arranged in the first cavity 282 and is located below the evaporator 230. The drainage plate 100 is configured with an outlet 114 and a water guide portion recessed relative to the top surface of the drainage plate 100. The water guide portion is in communication with 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 drainage plate 100. By placing the evaporator 230 horizontally in the air duct assembly 200 and controlling the angle of downward inclination of the evaporator 230 relative to the horizontal direction within the 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 drainage plate 100 is provided with a water guide portion, which meets the drainage requirement and also meets the requirement of air supply and heat exchange, ensuring that the air in the first cavity 282 is fully heat-exchanged with the evaporator 230 before being discharged. The drainage plate 100 with the water guide portion cooperates with the evaporator 230 to reduce the angle of inclination of the evaporator 230. Further, the heating element 160 arranged on the drainage plate 100 saves the height occupied by the heating defrosting structure, further reducing the height of the air duct assembly 200.

[0412] In combination with the above, the evaporator 230, the drainage plate 100, and the heating element 160 cooperate to fully reduce the height of the air duct assembly 200.

[0413] The heating element 160 covers the lower surface of the drainage plate 100, which can avoid direct contact between the heating element 160 and the defrosting water collected above the drainage plate 100, reducing the safety hazard.

[0414] The partition member 210, the air duct member 220, the first drainage member 260, the second drainage member 290, the fan 270, the fan cover 240, the drainage plate 100, the heating element 160, and the evaporator 230 can have the structures as described above, and thus will not be described again.

[0415] When the air duct assembly 200 is applied to the box body and the refrigeration equipment, the box body and the refrigeration equipment have the beneficial effects as described above.

[0416] The embodiments of the refrigeration equipment will be described below in combination with the air duct assembly.

[0417] The refrigeration equipment includes a cabinet and an air duct assembly. The air duct assembly is located in the cabinet and separates a first chamber and a second chamber. The air duct assembly includes a partition member, an air duct member, an evaporator, and a drainage plate. The partition member and the air 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 be in communication. The second air inlet, the first cavity, the second air outlet, and the second chamber are adapted to be in communication. The evaporator and the drainage plate are arranged in the first cavity. The air duct member supports the drainage plate. The drainage plate 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 arranged horizontally in the air duct assembly. The angle of the evaporator relative to the horizontal plane can be controlled within the preset angle, or the evaporator can be arranged horizontally. The height space occupied by the evaporator can be reduced, thereby reducing the overall height of the air duct assembly. The space occupied by the air duct assembly in the cabinet can be reduced. The storage space in the cabinet can be increased accordingly. A large-capacity refrigeration equipment can be provided.

[0418] In some cases, the first chamber is located above the second chamber. The first chamber is a refrigeration chamber, and the second chamber is a freezing chamber.

[0419] The first air inlet is located on the left side and the right side of the air duct assembly and close to the front side of the air duct assembly. The first air inlet is in communication with the first chamber above the air duct assembly. The second air inlet is located on the front side of the air duct assembly. The second air inlet is in communication with the second chamber below the air duct assembly.

[0420] The drainage plate can have one or more structures as described above. For details, refer to the above description, which will not be described again. The drainage structure of the air duct assembly can be the drainage mode as described above, such as the first drainage member for side drainage, the second drainage member for rear drainage, or the water guide element 223 for drainage, or a combination of multiple drainage modes.

[0421] The air duct assembly further comprises a fan 270 arranged at one side of the evaporator. The fan 270 can be arranged horizontally or vertically. For more details, please refer to the above description of the fan 270. The air duct assembly 200 further comprises a fan cover, a fan cover plate 243 and other structures used in cooperation with the fan. For more details, please refer to the above description, which will not be repeated here.

[0422] The box body, the partition member 210, the air duct member 220 and other structures can be understood from the above description, which will not be repeated here.

[0423] The above embodiments are only used for illustrating the present application, but not for limiting the present application. Although the present application is described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present application do not deviate from the spirit and scope of the present application, and should be covered in the scope of claims of the present application.

Claims

1. A duct assembly, characterized in that, include: Air duct components, The partition component, together with the air duct component, defines a first cavity, a first air inlet, a second air inlet, and an air outlet. The first air inlet and the second air inlet have air intakes with different temperatures. The partition component is constructed with a recessed portion that is recessed toward the inside of the partition component. The recessed portion is adapted to guide a portion of the air intake from at least one of the first air inlet and the second air inlet into the recessed portion.

2. The air duct assembly according to claim 1, characterized in that, The recessed portion includes a first recessed portion, which extends along the second side of the partition component to the third side with a first preset width and a first preset length. The second air inlet is located on the second side, and the first recessed portion is close to the first side edge of the partition component. The first air inlet is located on the first side.

3. The air duct assembly according to claim 2, characterized in that, The first recess has a first top surface and a first guide surface connected to the first top surface. The first guide surface is inclined downward in a direction away from the first top surface and is located on the side away from the first air inlet.

4. The air duct assembly according to claim 2, characterized in that, The first recessed portion is symmetrically arranged on both sides of the partition component.

5. The air duct assembly according to any one of claims 1 to 4, characterized in that, The recessed portion includes a second recessed portion, one side of which faces the second air inlet. The second recessed portion extends along the second side of the partition component to the third side with a second preset width and a second preset length. The second preset length is less than the length of the evaporator in the first cavity. The length of the evaporator is the length along the second side to the third side.

6. The air duct assembly according to claim 5, characterized in that, The second recess has a second top surface and a second guide surface connected to the second top surface. The second guide surface is inclined downward in a direction away from the second top surface and faces the side where the exhaust port is located.

7. The air duct assembly according to claim 5, characterized in that, The evaporator includes a heat exchange tube and a heat sink connected to the heat exchange tube, the heat sink extending from the side where the second air inlet is located to the side where the air outlet is located.

8. The air duct assembly according to claim 7, characterized in that, The heat sink has a protrusion that extends into the second recess.

9. The air duct assembly according to claim 5, characterized in that, In the case where the recessed portion includes a first recessed portion, the second recessed portion is separated from the first recessed portion by a third wall plate.

10. The air duct assembly according to claim 5, characterized in that, When the recessed portion includes a first recessed portion, the first preset length is greater than or equal to the second preset length.

11. The air duct assembly according to claim 1, characterized in that, It also includes an evaporator disposed in the first cavity, wherein the angle between the evaporator and the horizontal direction is less than or equal to a preset angle, or the evaporator is parallel to the horizontal direction.

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

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