Air duct module and refrigerator
By installing an insulation sleeve on the return air duct, the problem of ice buildup on the return air duct in air-cooled refrigeration equipment was solved, ensuring the refrigeration effect of the refrigerator.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2026-03-27
AI Technical Summary
In existing air-cooled refrigeration equipment, the temperature difference between the freezer and refrigerator compartments causes the return air ducts to easily freeze, affecting the refrigeration effect.
An insulation sleeve is installed on the return air duct to prevent ice from forming on the part of the return air duct that comes into contact with the refrigerator compartment, thus ensuring that the return air duct is unobstructed.
By installing an insulation sleeve on the return air duct, icing is prevented, the return air duct remains unobstructed, and the cooling effect of the refrigerator is improved.
Smart Images
Figure CN224050766U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to refrigeration equipment technical field especially, relates to a kind of air duct module and refrigerator. BACKGROUND
[0002] In existing air-cooled refrigeration equipment, double-temperature-zone refrigeration system design is usually adopted, specifically, evaporator is arranged in the inner cavity of freezer. Under this configuration, the low-temperature cold energy generated by evaporator is transported to refrigerator compartment by forced convection, and then the circulation path of cold and heat exchange is closed through return air duct. However, due to the significant temperature difference between freezer and refrigerator, strong thermodynamic gradient is easily generated at the interface of double-temperature-zone, which causes critical condensation conditions between air dew point temperature and return air duct wall surface temperature. This thermodynamic phenomenon not only induces local condensation and gradually forms ice layer accumulation, but also causes return air duct cross-sectional area reduction, which doubles air flow resistance and affects the refrigeration effect of refrigeration equipment. SUMMARY
[0003] The utility model aims at at least one of the technical problems existing in the related art. To this end, the utility model provides an air duct module. The air duct module avoids icing of the part of return air duct in contact with refrigerator compartment by sleeving a heat preservation sleeve on return air duct, ensures smooth return air duct pipeline, and further ensures the refrigeration effect of refrigerator.
[0004] The utility model further provides a refrigerator.
[0005] According to the air duct module provided by the utility model, the heat preservation sleeve is sleeved on the return air duct, so that icing of the part of return air duct in contact with refrigerator compartment is avoided, the return air duct pipeline is ensured to be smooth, and the refrigeration effect of refrigerator is ensured.
[0006] According to the air duct module provided by the utility model, the second end of the heat preservation sleeve extends to the evaporator.
[0007] According to the air duct module provided by the utility model, the heat preservation sleeve is arranged in the return air duct, and the second end of the heat preservation sleeve extends to the position of the first fin at the upper end of the evaporator.
[0008] According to the air duct module provided by the utility model, the heat preservation sleeve is a foam heat preservation sleeve.
[0009] According to the air duct module, opposite wall surfaces of the shell are provided with the air supply port and the air return port, the shell is provided with an air supply channel, a first end of the air supply channel is communicated with the air supply cavity, and a second end of the air supply channel is communicated with the plurality of air supply ports.
[0010] According to the air duct module, opposite wall surfaces of the shell are provided with the air supply port and the air return port, the shell is provided with an air supply channel, a first end of the air supply channel is communicated with the air supply cavity, and a second end of the air supply channel is communicated with the plurality of air supply ports.
[0011] According to the air duct module, opposite wall surfaces of the shell are provided with the air supply port and the air return port, the shell is provided with an air supply channel, a first end of the air supply channel is communicated with the air supply cavity, and a second end of the air supply channel is communicated with the plurality of air supply ports.
[0012] According to the air duct module, opposite wall surfaces of the shell are provided with the air supply port and the air return port, the shell is provided with an air supply channel, a first end of the air supply channel is communicated with the air supply cavity, and a second end of the air supply channel is communicated with the plurality of air supply ports.
[0013] According to the air duct module, opposite wall surfaces of the shell are provided with the air supply port and the air return port, the shell is provided with an air supply channel, a first end of the air supply channel is communicated with the air supply cavity, and a second end of the air supply channel is communicated with the plurality of air supply ports.
[0014] The utility model also provides a refrigerator, include: cabinet, baffle, set up in the cabinet, and the space in the cabinet is divided into cold storage room and freezing room with, the air duct module as described above, set up in the cabinet, and with The baffle is vertically arranged, the air supply cavity and the air return pipe are located in the freezing room, and the air supply port and the air return port are located in the cold storage room.
[0015] The air duct module provided by the embodiment of the utility model avoids icing of the part of the air return pipe abutting the cold storage room by sleeving the air return pipe with the heat preservation sleeve, guarantees smoothness of the air return pipe, and further guarantees the refrigeration effect of the refrigerator. ACCURATE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0017] Figure 1 is a sectional view of the air duct module provided by the embodiment of the present application.
[0018] Figure 2 is Figure 1 is an enlarged view of the second shell shown in the figure.
[0019] Figure 3 is a structural schematic view of the refrigeration equipment provided by the embodiment of the present application.
[0020] Reference signs:
[0021] 100, air duct module; 101, shell; 102, first shell; 103, second shell; 110, air supply cavity; 111, return air pipe; 112, fan; 113, evaporator; 120, embedded part; 121, first opening; 122, second opening; 131, first air supply port; 132, first air supply channel; 141, second air supply port; 142, second air supply channel; 150, return air port; 160, air outlet channel; 161, air outlet; 1131, first fin;
[0022] 200, cabinet; 201, refrigeration chamber; 202, freezing chamber; 210, partition plate. DETAILED DESCRIPTION
[0023] The embodiments of the present application will be further described in detail below in combination with the drawings and the embodiments. The following embodiments are used to illustrate the present application, but cannot be used to limit the scope of the present application.
[0024] In the description of the embodiments of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated thereby 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 for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0025] In the description of the embodiments of the utility model, need explanation, unless another explicit provision and limitation, term "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integral connection, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirectly connected through intermediate medium. For ordinary skilled in the art, can understand the specific meaning of the above terms in the embodiments of the utility model according to specific circumstances.
[0026] In the embodiments of the utility model, unless another explicit provision and limitation, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature can be "above", "over", and "on" the second feature. The first feature can be directly above or obliquely above the second feature, or it can simply mean that the first feature is higher in horizontal height than the second feature. The first feature can be "under", "below", and "underneath" the second feature. The first feature can be directly below or obliquely below the second feature, or it can simply mean that the first feature is lower in horizontal height than the second feature.
[0027] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, 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, those skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.
[0028] The following will be described in conjunction with Figures 1-3 The air duct module and the refrigerator provided by the embodiments of the utility model are described.
[0029] As Figure 1 and Figure 2As shown in the embodiment of the utility model, the air duct module 100 includes: a shell 101, a blowing cavity 110, a fan 112, an evaporator 113 and a heat preservation sleeve 114. The blowing cavity 110 is arranged in the shell 101, and the fan 112 and the evaporator 113 are arranged in the blowing cavity 110. One side wall of the shell 101 is provided with a blowing port and a return air port 150, the blowing port is communicated with the blowing cavity 110, the return air port 150 is communicated with the first end of the return air pipe 111, and the second end of the return air pipe 111 is communicated with the blowing cavity 110. That is, the cold energy generated by the evaporator 113 in the blowing cavity 110 is sent out through the blowing port under the action of the fan 112. The return air enters the return air pipe 111 through the return air port 150 and then enters the blowing cavity 110 to exchange heat with the evaporator 113. Thus, the blowing cavity 110, the blowing port, the return air port 150 and the return air pipe 111 form a circulating refrigeration circuit to provide cold air continuously. In the embodiment, the return air pipe 111 is arranged side by side with the blowing cavity 110, and when the air duct module 100 is applied to the refrigerator, the refrigerator has one refrigerating chamber and one freezing chamber. The return air pipe 111 is located in the freezing chamber, and the first end thereof is close to the refrigerating chamber. Since the temperature difference between the refrigerating chamber and the freezing chamber is large, condensation is easily generated at the first end of the return air pipe 111 to cause icing, so that the cross section of the return air pipe 111 becomes small and the air resistance becomes large. Based on this, in the embodiment of the utility model, the heat preservation sleeve 114 is arranged on the return air pipe 111, and the first end of the heat preservation sleeve 114 is arranged at the first end of the return air pipe 111 to avoid icing of the return air pipe 111 at the junction of the refrigerating chamber and the freezing chamber. Optionally, in the embodiment of the utility model, the heat preservation sleeve 114 can be arranged on the outside of the return air pipe 111 or in the inside of the return air pipe 111. The length of the heat preservation sleeve 114 can be the same as or smaller than the length of the return air pipe 111, but the heat preservation sleeve 114 must be arranged at the position of the return air pipe 111 at the junction of the refrigerating chamber and the freezing chamber.
[0030] The air duct module 100 provided by the embodiment of the utility model avoids icing of the part of the return air pipe 111 close to the refrigerating chamber, ensures smoothness of the return air pipe 111 and further ensures the refrigeration effect of the refrigerator.
[0031] As Figure 1 shown in the embodiment of the utility model, the first end of the heat preservation sleeve 114 is arranged at the first end of the return air pipe 111, and the second end of the heat preservation sleeve 114 extends to the side of the evaporator 113, that is, the length of the heat preservation sleeve 114 does not need to be as long as the length of the return air pipe 111. This arrangement not only can make the return air pipe 111 have sufficient heat preservation length to avoid condensation and icing of the return air pipe 111, but also can reduce the use amount of the heat preservation sleeve 114 and reduce the manufacturing cost.
[0032] In Figure 1In the shown embodiment, the heat preservation sleeve 114 is arranged in the return air pipe 111, and optionally, the heat preservation sleeve 114 can also be arranged outside the return air pipe 111. When the heat preservation sleeve 114 is arranged in the return air pipe 111, the material of the heat preservation sleeve 114 can be a foamed material, such as polystyrene foam, polyurethane foam, etc. The foamed material has good heat preservation performance, and still has good heat preservation performance at a low temperature, such as minus 50℃, thereby avoiding icing of the return air pipe 111. Since the foamed material is easy to be brittle, in the embodiment, the foamed heat preservation sleeve is arranged in the return air pipe 111, so that it has good heat preservation effect and long service life, thereby reducing the manufacturing cost.
[0033] Further, when the heat preservation sleeve 114 is arranged in the return air pipe 111, the second end of the heat preservation sleeve 114 extends to the position of the first fin 1131 at the upper end of the evaporator 113, so that the return air pipe 111 has sufficient heat preservation length, thereby avoiding condensation and icing of the return air pipe 111.
[0034] When the heat preservation sleeve 114 is arranged outside the return air pipe 111, the material of the heat preservation sleeve 114 can be rubber plastic heat preservation cotton, which has a thermal conductivity close to that of the foamed material, can have good heat preservation effect, and avoid icing of the return air pipe 111. In addition, the rubber plastic heat preservation cotton is not easy to be brittle compared with the foamed material, and thus can be arranged outside the return air pipe 111.
[0035] As shown in the embodiment of the utility model, the opposite wall surfaces of the shell 101 are respectively provided with the air supply port and the return air port 150, the shell 101 is provided with the air supply channel, the first end of the air supply channel is communicated with the air supply cavity 110, and the second end of the air supply channel is communicated with the plurality of air supply ports. Figure 2
[0036] Specifically, when the air duct module 100 is applied to the refrigerator, the air duct module 100 is arranged at the middle position of the refrigerator in the longitudinal direction, so as to divide the refrigerating chamber of the refrigerator into two refrigerating compartments and divide the freezing chamber of the refrigerator into two freezing compartments. In order to ensure that the two refrigerating compartments can be cooled at the same time, the opposite wall surfaces of the shell 101 are respectively provided with the first air supply port 131 and the second air supply port 141, and the two return air ports 150. The cold energy generated by the evaporator 113 enters the air supply channel under the action of the fan 112, and is then discharged to the two refrigerating compartments through the first air supply port 131 and the second air supply port 141, so as to cool the two refrigerating compartments at the same time. In the embodiment, the number of the air supply channels can be one, and the first air supply port 131 and the second air supply port 141 are both communicated with the air supply channel. The first air supply port 131 and the second air supply port 141 can be arranged oppositely or staggeredly, and it is only required to ensure that the first air supply port 131 and the second air supply port 141 are both communicated with the air supply channel. The return air enters the return air pipe 111 through the return air port 150 in each refrigerating compartment.
[0037] As Figure 2 shown, in the embodiment of the present application, the air duct module 100 further comprises a pre-embedded part 120, which is arranged in the shell 101 and separates the shell 101 into a first shell 102 and a second shell 103. The air supply cavity 110 and the return air pipe 111 are located in the first shell 102, and the air supply port and the return air port 150 are arranged in the second shell 103. The pre-embedded part 120 is provided with a first opening 121, and the two ends of the first opening 121 are respectively communicated with the air supply cavity 110 and the air supply channel.
[0038] Specifically, in the present embodiment, the first shell 102 is a hollow structure, and the internal space forms the air supply cavity 110. The inside of the second shell 103 is provided with an air supply channel, and the wall surface of the second shell 103 is provided with a first air supply port 131, a second air supply port 141 and two return air ports 150. The cold energy generated by the evaporator 113 enters the air supply channel through the first opening 121 under the action of the fan 112, and then is discharged from the first air supply port 131 and the second air supply port 141, and the return air enters the return air pipe 111 through the return air port 150 in each refrigeration compartment.
[0039] Further, the pre-embedded part 120 is provided with a plurality of first openings 121 along the extension direction of its length, and a plurality of air supply channels are arranged side by side in the shell 101, the plurality of air supply channels are one-to-one opposite and communicated with the plurality of first openings 121, and the plurality of air supply ports are staggered arranged on the opposite wall surfaces of the shell 101.
[0040] Specifically, the number of first openings 121 can be two, and correspondingly, the number of air supply channels is also two, namely a first air supply channel 132 and a second air supply channel 142. The two ends of the first air supply channel 132 are respectively communicated with one first opening 121 and the first air supply port 131, and the two ends of the second air supply channel 142 are respectively communicated with the other first opening 121 and the second air supply port 141. The cold energy generated by the evaporator 113 is guided to different air supply channels by the two first openings 121 under the action of the fan 112, and then discharged from the first air supply port 131 and the second air supply port 141. In the present embodiment, the air supply channel and the first opening 121 are arranged corresponding to each air supply port, so that the airflow flows along different channels, ensuring that the cold air is uniformly discharged from each air supply port.
[0041] In the present embodiment, since the first air supply channel 132 and the second air supply channel 142 are arranged side by side along the width direction of the shell 101, the first air supply port 131 and the second air supply port 141 located on the opposite wall surfaces of the shell 101 are staggered arranged.
[0042] As Figure 2As shown, in an embodiment of this utility model, the embedded part 120 is further provided with a second opening 122, which is located on the same straight line as a plurality of first openings 121. The two ends of the second opening 122 are respectively connected to a plurality of return air inlets 150 and a return air duct 111.
[0043] Specifically, the return air in each cold storage compartment enters the second opening 122 through the return air inlet 150, then enters the return air duct 111, and then flows to the air supply chamber 110 to exchange heat with the evaporator 113. In this embodiment of the present invention, the return air inlet 150 is located above the embedded part 120, and the first air supply outlet 131 and the second air supply outlet 141 are located above the return air inlet 150, so that cold air can be discharged from the top of the casing 101. The density of cold air is greater than that of hot air, and the cold air can fully exchange heat with the objects in the refrigeration equipment during its downward flow, and then enter the return air duct 111 through the return air inlet 150 and the second opening 122.
[0044] like Figure 2 As shown, in an embodiment of this utility model, an air outlet 160 is provided inside the housing 101, and the air outlet 160 is connected to the second opening 122. An air outlet 161 is provided on the opposite wall of the housing 101, and the air outlet 161 is connected to the air outlet 160. An odor deodorizer is provided inside the air outlet 160.
[0045] Specifically, when food is stored in a refrigerator for a long time, unpleasant odors often develop. The air outlet duct 160 is located above the second opening 122. Return air enters the air outlet duct 160 through the return air inlet 150. An odor remover is installed in the air outlet duct 160, which eliminates odors in the refrigerator. The odor-removing gas enters the refrigerator through the air outlet 161. Optionally, the odor remover can be activated carbon, which uses adsorption to remove odors from the refrigerator; the odor remover can also be an electronic odor remover, which releases ozone or active oxygen to destroy the molecular structure of odors and also has a sterilization function.
[0046] like Figure 3 As shown, this embodiment of the present invention also provides a refrigerator, including: a cabinet 200, a partition 210, and an air duct module 100. The partition 210 is horizontally disposed within the cabinet 200, dividing the space within the cabinet 200 into a refrigerator compartment 201 and a freezer compartment 202. The air duct module 100 is longitudinally disposed within the cabinet 200, perpendicular to the partition 210. In this embodiment, the air duct module 100 may be disposed along the inner wall of the cabinet 200, in which case the cabinet 200 has only one refrigerator compartment 201 and one freezer compartment 202; alternatively, the air duct module 100 may also be disposed in the middle of the partition 210, in which case the air duct module 100 divides the refrigerator compartment 201 into two refrigerator compartments and the freezer compartment 202 into two freezer compartments.
[0047] Further, the air duct module 100 comprises a housing 101, a blowing cavity 110, a fan 112, an evaporator 113 and a heat preservation cover 114. The blowing cavity 110 is arranged in the housing 101, and the fan 112 and the evaporator 113 are arranged in the blowing cavity 110. At least one side wall surface of the housing 101 is provided with a blowing port and a return air port 150, the blowing port is communicated with the blowing cavity 110, and the return air port 150 is communicated with a first end of a return air duct 111, and a second end of the return air duct 111 is communicated with the blowing cavity 110.
[0048] In the embodiment, the blowing cavity 110 and the return air duct 111 are arranged in the freezing chamber 202, and the blowing port and the return air port 150 are arranged in the refrigerating chamber 201. Cold energy generated by the evaporator 113 in the blowing cavity 110 is sent out by the blowing port under the action of the fan 112. Return air enters the return air duct 111 from the return air port 150 and then enters the blowing cavity 110 to exchange heat with the evaporator 113. Thus, the blowing cavity 110, the blowing port, the return air port 150 and the return air duct 111 form a circulating refrigeration circuit to provide cold air continuously.
[0049] When the air duct module 100 is arranged on the inner wall of the cabinet 200, one side wall surface of the housing 101 is provided with the blowing port and the return air port 150; when the air duct module 100 is arranged at the middle position of the partition plate 210, the opposite wall surfaces of the housing 101 are both provided with the blowing port and the return air port 150, that is, the opposite wall surfaces of the housing 101 are respectively provided with a first blowing port 131 and a second blowing port 141 and two return air ports 150. Cold energy generated by the evaporator 113 in the blowing cavity 110 is discharged to one refrigerating compartment from the first blowing port 131 and to another refrigerating compartment from the second blowing port 141 under the action of the fan 112. After the cold air exchanges heat with objects in the two refrigerating compartments, the return air enters the return air duct 111 from the return air port 150 in each refrigerating compartment and then enters the blowing cavity 110 to exchange heat with the evaporator 113. The opposite wall surfaces of the housing 101 are respectively provided with the blowing port and the return air port 150, so that refrigeration can be simultaneously performed on the two refrigerating compartments.
[0050] In the embodiment, the return air pipe 111 is arranged side by side with the air supply cavity 110, and the return air pipe 111 is located in the freezing chamber 202, but one end of the return air pipe 111 is close to the refrigerating chamber 201. Since the temperature difference between the refrigerating chamber 201 and the freezing chamber 202 is large, condensation and icing are prone to occur at the first end of the return air pipe 111, so that the cross section of the return air pipe 111 is reduced and the air resistance is increased. Based on this, in the embodiment of the utility model, the heat preservation sleeve 114 is sleeved on the return air pipe 111, and the first end of the heat preservation sleeve 114 is arranged at the first end of the return air pipe 111, so as to avoid icing of the return air pipe 111 at the junction of the refrigerating chamber 201 and the freezing chamber 202. Optionally, in the embodiment of the utility model, the heat preservation sleeve 114 can be sleeved on the outside of the return air pipe 111, or can be arranged in the inside of the return air pipe 111. The length of the heat preservation sleeve 114 can be the same as the length of the return air pipe 111, or can be smaller than the length of the return air pipe 111, but it is necessary to ensure that the heat preservation sleeve 114 is sleeved on the return air pipe 111 at the position where the return air pipe 111 is located at the junction of the refrigerating chamber 201 and the freezing chamber 202.
[0051] The refrigerator provided by the embodiment of the utility model avoids icing of the end of the return air pipe 111 close to the refrigerating chamber 201, ensures smoothness of the return air pipe 111, and further ensures the refrigeration effect of the refrigerator.
[0052] Finally, it should be noted that the above embodiments are only used to illustrate the utility model, and are not limited to the utility model. Although the utility model 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 scheme of the utility model do not deviate from the spirit and scope of the utility model, and should be covered in the scope of the claims of the utility model.
Claims
1. An air duct module, characterized by The shell (101) is internally provided with a supply air cavity (110) and a return air pipe (111), one side wall surface of the shell (101) is provided with a supply air port and a return air port (150), the supply air port is in communication with the supply air cavity (110), the return air port (150) is in communication with a first end of the return air pipe (111), and a second end of the return air pipe (111) is in communication with the supply air cavity (110); An evaporator (113) and a fan (112) are arranged in the supply air cavity (110); A heat preservation sleeve (114) is arranged on at least part of a surface of the return air pipe (111), and a first end of the heat preservation sleeve (114) is sleeved on the first end of the return air pipe (111). A second end of the heat preservation sleeve (114) extends to a position beside the evaporator (113).
2. The air duct module (100) according to claim 1, characterized in that The heat preservation sleeve (114) is arranged in the return air pipe (111), and a second end of the heat preservation sleeve (114) extends to a position at which a first fin (1131) of an upper end of the evaporator (113) is located.
3. The air duct module (100) according to claim 1, characterized in that The heat preservation sleeve (114) is a foam heat preservation sleeve.
4. The air duct module (100) according to claim 3, characterized in that Opposite wall surfaces of the shell (101) are each provided with the supply air port and the return air port (150), the shell (101) is internally provided with a supply air channel, a first end of the supply air channel is in communication with the supply air cavity (110), and a second end of the supply air channel is in communication with a plurality of the supply air ports.
5. The air duct module (100) of claim 1, wherein, A pre-embedded part (120) is arranged in the shell (101) and separates the shell (101) into a first shell (102) and a second shell (103); 6. The air duct module (100) according to claim 5, characterized in that The supply air cavity (110) and the return air pipe (111) are arranged in the first shell (102), the supply air port and the return air port (150) are arranged in the second shell (103), and the pre-embedded part (120) is provided with a first opening (121), two ends of the first opening (121) are respectively in communication with the supply air cavity (110) and the supply air channel. The pre-embedded part (120) is provided with a plurality of the first openings (121) along the extension direction of the length of the pre-embedded part (120), a plurality of the supply air channels are arranged side by side in the shell (101), and a plurality of the supply air channels and a plurality of the first openings (121) are in one-to-one correspondence and in communication; 7. The air duct module (100) according to claim 6, characterized in that A plurality of the supply air ports are arranged staggered on opposite wall surfaces of the shell (101). The pre-embedded part (120) is provided with a second opening (122), two ends of the second opening (122) are respectively in communication with a plurality of the return air ports (150) and the return air pipe (111).
8. The air duct module of claim 6, wherein, A deodorizer is further included, the second shell is internally provided with an air outlet channel (160), the air outlet channel (160) is in communication with the second opening (122), and the air outlet channel (160) is internally provided with the deodorizer; 9. The air duct module of claim 8, wherein, Opposite wall surfaces of the second shell (103) are provided with air outlet ports (161), and the air outlet ports (161) are in communication with the air outlet channel (160). The box body (200) is internally provided with a supply air cavity (110) and a return air pipe (111), 10. A refrigerator characterized by comprising: A partition (210) is arranged in the cabinet (200) and divides the space in the cabinet (200) into a refrigeration chamber (201) and a freezing chamber (202); The air duct module (100) according to any one of claims 1-9 is arranged in the cabinet (200) and arranged perpendicularly to the partition (210), the air supply cavity (110) and the air return pipe (111) are located in the freezing chamber (202), and the air supply port and the air return port (150) are located in the refrigeration chamber (201).