Air duct assembly and refrigeration equipment

Abstract

The application discloses a wind channel assembly and a refrigeration equipment. The wind channel assembly comprises a shell and a fan. The shell is provided with an air inlet and an air outlet. The shell has a wind channel. The wind channel is communicated with the air inlet and the air outlet. The fan is located in the wind channel. The shell has a recess. The recess is located on the side of the fan away from the air outlet. Compared with the prior art, the wind channel assembly and the refrigeration equipment have the following advantages. On the one hand, the recess facilitates the installation and holding of the wind channel assembly, saves the material of the shell, and thus saves the cost. On the other hand, the wind channel can extend along the recess, so that the air flow path is controlled. In addition, the air on both sides of the shell can communicate with each other from the recess, so that the air flow communication between both sides of the shell is improved. Furthermore, the layout in the wind channel assembly is compact, and the space in the shell can be reasonably utilized.

Description

Technical Field

[0001] This application relates to the field of refrigeration technology, specifically to a duct component and refrigeration equipment. Background Technology

[0002] Refrigeration equipment is used for the storage and preservation of vegetables, food, beverages and other items due to its refrigeration function. It has been widely used in stores, supermarkets and homes, and is constantly developing towards larger capacity.

[0003] However, large-capacity refrigeration equipment typically uses evaporator tubes wrapped around the outer perimeter of the inner tank to transfer cold energy to the storage compartment through natural radiation. The storage compartment is relatively large, resulting in lower temperatures in areas closer to the inner tank and relatively higher temperatures in areas farther away, especially near the compartment opening. This leads to poor temperature uniformity within the storage compartment, hindering effective preservation of stored items.

[0004] In related technologies, air duct components are installed inside the storage room to deliver cold air to areas of the storage room away from the inner liner. However, due to the large space inside the storage room, the air duct components often present installation difficulties. Summary of the Invention

[0005] The purpose of this application is to provide a duct component and a refrigeration device.

[0006] To achieve one of the above-mentioned application objectives, one embodiment of this application provides an air duct assembly, including a housing and a fan. The housing is provided with an air inlet and an air outlet. The housing has an air duct that connects the air inlet and the air outlet. The fan is located in the air duct. The housing has a recess located on the side of the fan away from the air outlet.

[0007] As a further improvement of one embodiment of this application, the housing includes a first end and a second end disposed opposite to each other along a first direction, the air outlet is disposed at the first end, the air inlet is disposed at the second end, and the recess is formed from the second end toward the first end.

[0008] As a further improvement of one embodiment of this application, the housing has a pair of sidewalls disposed opposite each other along a second direction, the second direction being perpendicular to the first direction, the notch being located between the pair of sidewalls, the air duct including an air inlet duct, the air inlet duct connecting the air inlet and the fan, and at least a portion of the air inlet duct being located between the notch and the sidewalls.

[0009] As a further improvement of one embodiment of this application, the air inlet duct includes a first section and a second section that are sequentially connected from the air inlet to the fan. The first section extends along the first direction, and at least a portion of the first section is located between the recess and the sidewall.

[0010] As a further improvement of one embodiment of this application, a through portion is provided on the housing, the through portion being located between the fan and the side wall.

[0011] As a further improvement of one embodiment of this application, a pair of through portions are provided, and the pair of through portions are respectively located on both sides of the fan along the second direction.

[0012] As a further improvement of one embodiment of this application, the through portion is located between the air outlet and the recess.

[0013] As a further improvement of one embodiment of this application, the second segment is located between the notch and the through portion.

[0014] As a further improvement of one embodiment of this application, the air duct assembly further includes a wind baffle, which divides the inner cavity of the housing into an air inlet cavity and an air outlet cavity. The air inlet cavity is connected to the air inlet, and the air outlet cavity is connected to the air outlet. A ventilation opening is provided on the wind baffle, which connects the air inlet cavity and the air outlet cavity. The exhaust port of the fan is connected to the ventilation opening. The wind baffle is integrally formed with the peripheral wall of the through portion.

[0015] To achieve one of the above-mentioned objectives, one embodiment of this application also provides a refrigeration device, which includes the air duct assembly described above.

[0016] Compared with the prior art, the air duct assembly and refrigeration equipment having the same in this application have the following advantages: First, the notch design facilitates the installation and gripping of the air duct assembly, making installation easier and saving on housing material, thus reducing costs. Second, it allows the air duct to extend around the notch, thereby controlling the airflow path. Furthermore, the air on both sides of the housing can communicate with each other through the notch, thereby improving the airflow on both sides of the housing and making the internal layout of the air duct assembly compact, which is beneficial for the rational use of the internal space of the housing. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of a refrigeration device according to an embodiment of this application; Figure 2 This is a three-dimensional structural diagram of a refrigeration device according to an embodiment of this application, which illustrates the state with the door removed; Figure 3 This is a top view of a refrigeration device according to an embodiment of this application, illustrating the state with the door removed; Figure 4 This is a top view of a refrigeration device according to an embodiment of this application; Figure 5 yes Figure 4 Sectional view along line AA; Figure 6 yes Figure 5 Enlarged diagram of section B in the middle; Figure 7 This is a schematic diagram of the assembly structure of the air duct assembly and the return air component in a refrigeration device according to an embodiment of this application; Figure 8 This is a schematic diagram of the assembly structure of the air duct assembly and return air component according to an embodiment of this application from another angle; Figure 9 This is a schematic diagram of the structure of an air duct assembly according to an embodiment of this application, which shows the state with the cover plate removed; Figure 10 yes Figure 9 Another structural diagram, where the X arrow indicates the first direction and the Y arrow indicates the second direction; Figure 11 This is a schematic diagram of the air duct assembly according to another embodiment of this application, which shows the state with the cover plate removed; Figure 12 yes Figure 11 The diagram shows the structure of the air duct assembly without the insulation component. Figure 13 This is a structural schematic diagram of an air duct assembly according to another embodiment of this application, which shows the state with the cover plate removed; Figure 14 This is a structural schematic diagram of a duct assembly according to another embodiment of this application, showing the state with the cover plate removed.

[0018] Explanation of reference numerals in the attached figures: 100, refrigeration equipment; 1, cabinet body; 11, inner container; 111, first wall; 112, second wall; 113, bottom wall; 12, cabinet shell; 2, door body; 3, storage compartment; 4, evaporation tube; 5, air duct assembly; 51, housing; 511, air outlet; 5111, sub-air outlet; 5112, middle air outlet; 5113, side air outlet; 512, air inlet; 513, air duct; 5131, air inlet duct; 51311, first section; 51312, second section; 5132, air outlet duct; 51321, sub-air duct; 51322, middle air duct; 51323, side air duct; 514, first end; 515, second end; 516, notch; 517, side wall; 518, through part; 519, base; 510, cover plate; 52, fan; 521, exhaust outlet; 522, air suction inlet; 523, volute; 524, impeller; 53, air guide member; 531, air guide plate; 54, wind shield member; 541, ventilation opening; 542, wind shield rib; 55, sterilization module; 56, temperature sensor; 6, return air member; 61, return air outlet; 7, heat insulation member. Detailed Description of Embodiments

[0019] The present application will be described in detail below with reference to the specific embodiments shown in the accompanying drawings.

[0020] In each drawing of the present application, for the convenience of illustration, some dimensions of structures or parts are enlarged relative to other structures or parts, and therefore, they are only used to illustrate the basic structure of the subject matter of the present application.

[0021] It should be understood that although the terms "first", "second", "third" and the like may be used herein to describe various elements, structures or parameters, these described objects should not be limited by these terms. These terms are only used to distinguish these described objects from one another.

[0022] Reference Figures 1 to 4 As shown in the figure, an embodiment of the present application provides a refrigeration equipment 100, which includes a cabinet body 1, a door body 2 and a refrigeration unit. A storage compartment 3 is provided in the cabinet body 1, the storage compartment 3 has an opening, and the door body 2 is used to open or close the opening of the storage compartment 3.

[0023] The refrigeration equipment 100 in this embodiment is a direct-cooling type refrigeration equipment, that is, it adopts a direct-cooling method to supply cooling for articles stored in the storage compartment 3. The refrigeration equipment 100 can be specifically configured as a refrigerator, a freezer, a wine cooler and the like, especially a large-capacity refrigeration equipment 100. In this embodiment, the description is given by taking the refrigeration equipment 100 as a horizontal freezer as an example.

[0024] Specifically, the refrigeration unit includes a compressor, a condenser, a throttling device and an evaporator which are connected in sequence.

[0025] In combination with Figures 5 to 6The cabinet 1 includes an inner liner 11 and a shell 12 disposed outside the inner liner 11. The inner liner 11 defines a storage chamber 3. The evaporator includes an evaporator tube 4 wrapped around the outer periphery of the inner liner 11. The evaporator tube 4 transfers cold energy through the inner liner 11 to the storage chamber 3 by natural radiation, thereby cooling the items stored in the storage chamber 3.

[0026] This natural radiation cooling method, which uses evaporator tubes 4 wrapped around the outer periphery of the inner liner 11, transfers cold energy from the inner liner 11 to the central area of ​​the storage compartment 3. However, the space in the storage compartment 3 is usually large, which leads to a large temperature difference between different areas in the storage compartment 3 and poor temperature uniformity. In addition, the storage compartment 3 has an opening, especially when the door 2 is open, a lot of cold energy is lost outward at the opening of the storage compartment 3, which causes the temperature in the area near the opening of the storage compartment 3 to be significantly higher than that in the area near the inner liner 11, further aggravating the temperature unevenness in the storage compartment 3.

[0027] See Figures 2 to 3 The refrigeration equipment 100 also includes an air duct assembly 5, which is located in the storage compartment 3 and connected to the inner liner 11. This allows the cooling energy generated by the evaporator 4 to be transported through the air duct assembly 5 to areas in the storage compartment 3 that are far from the inner liner 11, thereby improving the temperature uniformity in the storage compartment 3.

[0028] Specifically, see Figures 7 to 9 The air duct assembly 5 includes a housing 51 and a fan 52. The fan 52 is located inside the housing 51. The housing 51 is provided with an air outlet 511 and an air inlet 512. The fan 52 has an exhaust port 521 and an intake port 522, with the exhaust port 521 facing the air outlet 511.

[0029] An air duct 513 is provided inside the housing 51. The air duct 513 includes an air inlet duct 5131 and an air outlet duct 5132. The air inlet duct 5131 connects the air inlet 512 and the air intake 522 of the fan 52. The air outlet duct 5132 connects the exhaust vent 521 and the air outlet 511. In this way, cold air enters the air inlet duct 5131 from the inner liner 11 through the air inlet 512, passes through the fan 52, and is then discharged from the air outlet 511 through the air outlet duct 5132, thereby realizing the directional delivery of cold air to the area of ​​the storage compartment 3 away from the inner liner 11.

[0030] See Figure 9In one embodiment, the air duct assembly 5 further includes multiple air guides 53. The air outlet 511 includes multiple sub-air outlets 5111, and the multiple air guides 53 divide the air outlet duct 5132 into multiple sub-air ducts 51321. Each sub-air duct 51321 connects the exhaust outlet 521 to one of the sub-air outlets 5111. That is, the sub-air ducts 51321 and the sub-air outlets 5111 are arranged in a one-to-one correspondence, and the number of sub-air ducts 51321 and the number of sub-air outlets 5111 are consistent.

[0031] In this way, the air outlet duct 5132 is divided into multiple sub-ducts 51321 by multiple air guides 53, and the cold air sent from the exhaust port 521 of the fan 52 is discharged from multiple sub-ports 5111, thereby realizing the air volume distribution of cold air along the extension direction of the air outlet 511, thereby improving the temperature uniformity in the storage room 3.

[0032] The fan 52 is a centrifugal fan. The centrifugal fan 52 includes a volute 523 and an impeller 524. The impeller 524 is located inside the volute 523, and the exhaust port 521 is located in the volute 523. In this way, cold air can enter the volute 523 along the axial direction, and after centrifugation, it is vertically turned and then discharged from the volute 523 through the exhaust port 521.

[0033] Combination Figures 9 to 10 The exhaust vent 521 and the air outlet 511 are spaced apart along a first direction. The air outlet 511 is located close to the opening of the storage compartment 3. The first direction is the opening direction of the storage compartment 3. In other words, the exhaust vent 521 is located on the side of the air outlet 511 that is away from the opening of the storage compartment 3.

[0034] In one embodiment, a plurality of sub-vents 5111 are spaced apart along a second direction, which is perpendicular to the first direction. By spaced apart the plurality of sub-vents 5111, the positions of the air outlets 511 and the distances between them can be reasonably arranged, thereby improving the temperature uniformity within the storage room 3.

[0035] In this embodiment, each air guide 53 includes two interconnected air guide plates 531. The ends of the two air guide plates 531 connected to each other are located near the exhaust port 521 of the fan 52, and the ends of the two air guide plates 531 away from the exhaust port 521 are respectively connected to the ends of two adjacent sub-air outlets 5111 that are close to each other. In this way, the structure of the air guide 53 can achieve the directional guidance of cold air to each sub-air outlet 5111, and the structure is simple.

[0036] In another embodiment, multiple sub-vents 5111 are interconnected to form an air outlet 511. Thus, the air outlet 511 has a simple structure and is easy to manufacture.

[0037] In this embodiment, the air volume of multiple sub-air outlets 5111 can be controlled by simply controlling the spacing between adjacent air guides 53, thereby controlling the cooling output from each sub-air outlet 5111.

[0038] See Figures 9 to 10 In one specific embodiment, the plurality of sub-vents 5111 include a central vent 5112 and a plurality of side vents 5113. The central vent 5112 is arranged corresponding to the exhaust vent 521 in the second direction, and the plurality of side vents 5113 are respectively located on both sides of the central vent 5112. That is, the central vent 5112 is located between the plurality of side vents 5113. In this way, through such structural design, the fan 52 can be directly facing the central vent 5112, thereby delivering more cooling capacity to the central vent 5112 compared to the side vents 5113, thereby reducing the temperature in the central area of ​​the storage room 3 and improving the temperature uniformity of the storage room 3.

[0039] Specifically, the multiple sub-air outlets 5111 can be divided by the setting position of each air guide 53 at the air outlet 511.

[0040] The number of side air vents 5113 can be set according to actual needs. For example, two side air vents 5113 can be set, and the central air vent 5112 can be set between the two side air vents 5113. Alternatively, more side air vents 5113 can be set so that there are side air vents 5113 on both sides of the central air vent 5112.

[0041] In this configuration, the length L1 of the central air vent 5112 along the second direction is greater than the length L2 of the side air vent 5113 along the second direction. This allows more cooling energy to be delivered to the central air vent 5112, thereby reducing the temperature in the central area of ​​the storage room 3 and improving the temperature uniformity of the storage room 3.

[0042] Preferably, L1 / L2 = 3~5. That is, the length of the central air vent 5112 along the second direction is 3 to 5 times the length of the side air vent 5113 along the second direction. In this way, the amount of cold air delivered to the central air vent 5112 can be guaranteed, thereby ensuring that the temperature in the central area of ​​the storage room 3 reaches the preset temperature and improving the temperature uniformity of the storage room 3.

[0043] The length of each side air vent 5113 along the second direction can be set to be the same or different.

[0044] Correspondingly, the multiple sub-ventilations 51321 include a central ventilation 51322 that connects the exhaust vent 521 and the central vent 5112, and a side ventilation 51323 that connects the exhaust vent 521 and the side vent 5113.

[0045] The sub-ventilation duct 51321 has an inlet near the exhaust vent 521, wherein the length L3 of the inlet of the central ventilation 51322 along the second direction is greater than the length L4 of the inlet of the side ventilation 51323 along the second direction. Thus, since the fan 52 discharges cold air radially from the exhaust vent 521, this arrangement allows for the delivery of more cooling capacity to the central ventilation 51322, resulting in a greater output of cooling capacity from the central vent 5112. This significantly reduces the temperature in the central area of ​​the storage room 3 and improves the temperature uniformity of the storage room 3.

[0046] Preferably, L3 / L4 = 3~5. That is, the length of the inlet of the central air duct 51322 along the second direction is 3 to 5 times the length of the inlet of the side air duct 51323 along the second direction. In this way, more cooling capacity can be delivered to the central air duct 51322, thereby outputting more cooling capacity from the central air outlet 5112, ensuring that the temperature in the central area of ​​the storage room 3 reaches the preset temperature, and improving the temperature uniformity of the storage room 3.

[0047] The length of the inlet of each side air duct 51323 along the second direction can be set to be the same or different.

[0048] See Figures 11 to 12 In one embodiment, the height H2 of the central air vent 5112 along the first direction is greater than or equal to the height H1 of the side air vent 5113 along the first direction.

[0049] Alternatively, all side air vents 5113 can be configured to have a height lower than the central air vent 5112 along the first direction. Or, some side air vents 5113 can be configured to have a height equal to the central air vent 5112 along the first direction, while others can have a height lower than the central air vent 5112. This ensures that more cooling capacity is output to the central air vent 5112, guaranteeing that the temperature in the central area of ​​the storage room 3 reaches the preset temperature and improving the temperature uniformity of the storage room 3.

[0050] Alternatively, all side air vents 5113 can be configured to have the same height along the first direction as the central air vent 5112 along the first direction, which facilitates processing.

[0051] See Figures 9 to 10In one specific embodiment, the air outlet 511 includes three sub-air outlets 5111, which are spaced apart along the second direction. Specifically, the three sub-air outlets 5111 include a central air outlet 5112 and two side air outlets 5113. The length L1 of the central air outlet 5112 along the second direction is greater than the length L2 of the side air outlets 5113 along the second direction, and the length L3 of the inlet of the central air duct 51322 along the second direction is greater than the length L4 of the inlet of the side air duct 51323 along the second direction. Specifically, L1 / L2 = 3~5, and L3 / L4 = 3~5. Each air guide 53 includes two interconnected air guide plates 531. One end of the two air guide plates 531 is connected to the exhaust outlet 521 of the fan 52, and the ends of the two air guide plates 531 away from the exhaust outlet 521 are respectively connected to the ends of two adjacent sub-air outlets 5111 that are close to each other.

[0052] In this embodiment, the height of the two side air vents 5113 along the first direction is approximately the same as the height of the central air vent 5112 along the first direction.

[0053] See Figures 11 to 12 This is another specific embodiment of the present application, which is similar to... Figures 9 to 10 The only difference in the embodiment shown is that the height of one of the side air vents 5113 along the first direction is less than the height of the central air vent 5112 along the first direction.

[0054] See Figure 13 This is another specific embodiment of the present application, which is similar to... Figures 9 to 10 The only difference in the illustrated embodiment is that the air outlet 511 in this embodiment includes five sub-air outlets 5111, which are spaced apart along the second direction. Specifically, the five sub-air outlets 5111 include one central air outlet 5112 and four side air outlets 5113, with two side air outlets 5113 on each side of the central air outlet 5112.

[0055] See Figure 14 This is another specific embodiment of the present application, which is similar to... Figure 13 The only difference in the illustrated embodiment is that the air outlet 511 in this embodiment is formed by five interconnected sub-air outlets 5111. The length of each sub-air outlet 5111 along the second direction is controlled by the position of the air guide 53.

[0056] The air outlet 511 is equipped with a grille, which can disperse the concentrated cold air, thereby guiding the cold air and optimizing the airflow, and can also prevent the air outlet 511 from becoming blocked.

[0057] See Figure 8An air inlet 512 is located at the end of the housing 51 away from the air outlet 511. The air inlet 512 is located at at least one end of the housing 51 along the second direction. Specifically, air inlets 512 can be provided at both ends of the housing 51 along the second direction to increase the airflow delivered to the housing 51, thereby improving cooling efficiency; alternatively, an air inlet 512 can be provided only at one end of the housing 51 along the second direction.

[0058] See Figure 9 In one embodiment, the air inlet duct 5131 includes a first section 51311 and a second section 51312 sequentially connected from the air inlet 512 to the air intake 522 of the fan 52, with the first section 51311 extending along the first direction. This allows the first section 51311 to be as close as possible to the inner liner 11, thereby bringing it as close as possible to the evaporator pipe 4, thus carrying more cooling energy into the air outlet duct 5132; it also rectifies the cold air in the air inlet duct 5131, directing it along a specific path into the fan 52.

[0059] See Figure 8 The housing 51 includes a first end 514 and a second end 515 disposed opposite to each other along the first direction. An air outlet 511 is disposed at the first end 514, and an air inlet 512 is disposed at the second end 515.

[0060] See Figures 7 to 10 In one embodiment, the housing 51 has a recess 516 located on the side of the fan 52 opposite to the air outlet 511. This design facilitates the installation and gripping of the air duct assembly 5, reducing material usage in the housing 51 and thus saving costs. Furthermore, it allows the air duct 513 to extend around the recess 516, thereby controlling the airflow path. Additionally, air on both sides of the housing can communicate through the recess 516, improving airflow on both sides of the housing 51 and resulting in a compact internal layout for the air duct assembly 5, which is beneficial for the efficient use of space within the housing 51.

[0061] In one embodiment, the notch 516 is recessed from the second end 515 toward the first end 514. That is, the notch 516 penetrates the housing 51. This facilitates manufacturing and processing.

[0062] The inner liner 11 has a bottom wall 113 that is positioned opposite the opening of the storage compartment 3. Thus, the recess 516 is located at one end of the outer shell 51 near the bottom wall 113 of the inner liner 11. This recess 516 can be used to store items, and the two spaces within the storage compartment 3 separated by the outer shell 51 can communicate with each other through the recess 516, facilitating storage and item movement, and also improving airflow within the storage compartment 3.

[0063] The housing 51 has a pair of sidewalls 517 disposed opposite each other along the second direction. An air inlet 512 is disposed on the sidewalls 517.

[0064] The notch 516 is located between a pair of sidewalls 517, and at least part of the first segment 51311 is located between the notch 516 and the sidewalls 517. In this way, the wall of the notch 516 and the sidewalls 517 can define the air inlet duct 5131, and the first segment 51311 is defined near the inner liner 11, so that the first segment 51311 is as close as possible to the evaporator tube 4, so as to carry more cold air into the air outlet duct 5132.

[0065] See Figure 9 The notch 516 defines a first section 51311 between the notch 516 and either of the pair of sidewalls 517, thereby increasing the amount of cold air supplied into the air intake duct 5131 and thus improving the cooling effect on the storage compartment 3.

[0066] See Figures 7 to 10 In one embodiment, a through portion 518 is provided on the housing 51, which is located between the fan 52 and the side wall 517. Thus, the through portion 518 can serve as a flow channel for airflow in the spaces on both sides of the housing 51, and can also be used for the installation and holding of the air duct assembly 5, which facilitates installation and saves on the material used for the housing 51, thereby reducing costs.

[0067] In one embodiment, a pair of through portions 518 are provided, with the pair of through portions 518 located on both sides of the fan 52 along the second direction. This improves the airflow permeability of the space on both sides of the housing 51 and increases the parts that are easy to hold and install, further saving materials and costs for the housing 51.

[0068] See Figure 9 The through section 518 is located between the air outlet 511 and the recess 516. This arrangement is not only compact and economical in terms of material usage, but also provides sufficient space for the flow of cold air within the housing 51, without affecting the flow of cold air within the housing 51.

[0069] The second segment 51312 is located between the notch 516 and the through portion 518. In this way, the extension path of the second segment 51312 can be limited by the notch 516 and the through portion 518, thereby controlling the cold air to enter the fan 52 along a specific path in the air inlet duct 5131.

[0070] See Figure 9The air duct assembly 5 also includes a wind deflector 54. The wind deflector 54 divides the inner cavity of the housing 51 into an air inlet cavity and an air outlet cavity. The air inlet cavity is connected to the air inlet 512, and the air outlet cavity is connected to the air outlet 511. The wind deflector 54 is provided with a vent 541, which connects the air inlet cavity and the air outlet cavity. The exhaust port 521 of the fan 52 is connected to the vent 541.

[0071] The air inlet duct 5131 is located in the air inlet cavity, and the air outlet duct 5132 is located in the air outlet cavity, or the air outlet cavity directly forms the air outlet duct 5132.

[0072] The fan 52 is located at the vent 541, and the exhaust port 521 of the fan 52 is opposite to the vent 541, so that the cold air discharged from the exhaust port 521 blows directly into the air outlet cavity.

[0073] See Figure 9 The wind deflector 54 includes a pair of wind deflector ribs 542, which are arranged in a trumpet shape relative to the ventilation opening 541. The wind deflector 54 forms the inner wall of the air outlet cavity, and the size of the air outlet cavity gradually increases from the ventilation opening 541 to the air outlet 511.

[0074] In one embodiment, the wind deflector 54 is integrally formed with the peripheral wall of the through portion 518. That is, the peripheral wall of the through portion 518 can be connected to the fan housing 523 at the exhaust port 521, thereby allowing the peripheral wall of the through portion 518 to separate the air inlet chamber and the air outlet chamber. This simplifies the structure of the air duct 513 inside the housing 51, saving materials and costs.

[0075] Specifically, a pair of wind deflectors 542 are respectively connected to the volute 523 and to both ends of the exhaust port 521 along the second direction.

[0076] See Figure 14 In one embodiment, the air duct assembly 5 further includes a sterilization module 55. The sterilization module 55 is disposed within the air inlet duct 5131. By providing the sterilization module 55 within the air inlet duct 5131, the sterilizing substance released by the sterilization module 55 can be sent into the storage compartment 3 with the cold air from the air outlet 511 through the air duct 513 of the air duct assembly 5, thereby sterilizing the items stored in the storage compartment 3.

[0077] See Figure 14 In one embodiment, the air duct assembly 5 further includes a temperature sensor 56. The temperature sensor 56 is disposed within the air inlet duct 5131. By disposing of the temperature sensor 56 within the air inlet duct 5131, the airflow temperature within the duct 513 can be monitored, and the operation of the refrigeration equipment 100 can be controlled based on the temperature within the duct 513 and the temperature within the storage compartment 3.

[0078] See Figures 7 to 9 The housing 51 includes a base 519 and a cover plate 510 fastened to the base 519, and an air duct 513 is formed between the base 519 and the cover plate 510. The base 519 and the cover plate 510 can be installed and fixed by means of snap-fit ​​fasteners.

[0079] The wind deflector 54 connects the base 519 and the cover plate 510. This allows the inner cavity of the housing 51 to be divided into an air inlet cavity and an air outlet cavity.

[0080] The air guide 53 connects the base 519 and the cover plate 510, thereby enabling the separation of each sub-air duct 51321.

[0081] The impeller 524 is fixed on the base 519, and the volute 523 covers the impeller 524 and is installed and fixed on the base 519. Specifically, the base 519 is provided with a volute 523 positioning post that is adapted to the volute 523. The end of the volute 523 facing the base 519 has an opening. The volute 523 is fastened to the volute 523 positioning post, thereby realizing the installation and fixation of the volute 523 and the base 519. The base 519 simplifies the structure of the volute 523 and reduces the space occupied by the volute 523 in the air duct 513, thereby reducing the volume of the air duct assembly 5. The base 519 can also seal the opening of the volute 523. A volute 523 cavity is formed between the base 519 and the volute 523, and the impeller 524 is located in the volute 523 cavity.

[0082] The air inlet 522 of the fan 52 is located on the volute 523 and faces the cover plate 510. There is a gap between the volute 523 and the cover plate 510. The air inlet 512 and the air outlet 511 of the air duct 513 are respectively located on opposite sides of the volute 523.

[0083] See Figure 11 In one embodiment, a heat insulation element 7 is also provided in the housing 51. The heat insulation element 7 is disposed in the air duct 513 and is attached to the housing 51. This can reduce the heat exchange between the cold air in the air duct 513 and the air outside the housing 51 during the process of being transported to the air outlet 511. This allows the cold air to be concentratedly sent from the air outlet 511 to the storage room 3, improving the temperature uniformity effect and preventing the hot air outside the housing 51 from exchanging heat with the cold air in the air duct 513 through the housing 51, thereby preventing the air in the air duct 513 from warming up.

[0084] In one embodiment, the heat insulation element 7 is only disposed on the side of the air duct 513 that is in contact with the base 519; in another embodiment, the heat insulation element 7 may also be disposed only on the side of the air duct 513 that is in contact with the cover plate 510; in yet another embodiment, at least two heat insulation elements 7 may be disposed, one of which is in contact with the base 519 and the other of which is in contact with the cover plate 510, thereby increasing the heat insulation area and further preventing the hot air outside the housing 51 from exchanging heat with the cold air inside the air duct 513.

[0085] Specifically, the heat insulation component 7 can be fixedly attached to the housing 51 or pressed and adhered to the housing 51.

[0086] In a specific embodiment, the heat insulation component 7 can be made of polyethylene insulation material.

[0087] In one embodiment, the heat insulation component 7 is only disposed in the air outlet cavity. Since the air outlet 511 of the air duct 513 is located at the opening of the housing 51 near the storage compartment 3, the air outlet duct 5132 is relatively located closer to the opening of the storage compartment 3 than the air inlet duct 5131. Therefore, it is easier for the air outlet duct to exchange heat with the air outside the housing 51. On the other hand, the air inlet duct 5131 is relatively located away from the opening of the storage compartment 3. The cooling capacity at this location is relatively sufficient, and the temperature inside the storage compartment 3 outside the housing 51 is relatively low. Therefore, the cooling capacity in the air inlet duct 5131 exchanges less heat with the air outside the housing 51. Therefore, by only disposing of the heat insulation component in the air outlet cavity, the amount of material used for the heat insulation component 7 can be reduced, saving costs.

[0088] See Figure 2 and Figure 7 In this embodiment, the refrigeration device 100 further includes a return air component 6, and the air duct assembly 5 is connected to the inner liner 11 through the return air component 6. The return air component 6 is connected to the inner liner 11, and a heat exchange channel is formed between the return air component 6 and the inner liner 11. The heat exchange channel, the air duct 513, and the storage compartment 3 are sequentially connected and form a circulating air path. Since the air outlet 511 of the air duct 513 is located at the opening of the housing 51 near the storage compartment 3, the cold energy generated by the evaporator 4 can be transferred to the area near the opening of the storage compartment 3 through the heat exchange channel in the return air component 6 and the air duct 513 in the air duct assembly 5. Moreover, the cold energy can flow from the area near the opening of the storage compartment 3 to the return air component 6, thereby improving the uniformity of the cold energy distribution in the storage compartment 3.

[0089] See Figure 2 In one embodiment, the inner liner 11 includes a pair of first walls 111 disposed opposite each other along the second direction, and the return air member 6 is disposed on the first wall 111.

[0090] In one embodiment, a pair of return air components 6 are provided, and the pair of return air components 6 are respectively provided on a pair of first walls 111. The two ends of the air duct assembly 5 along the second direction are respectively connected to the pair of return air components 6.

[0091] In addition, the inner liner 11 also includes a pair of second walls 112 arranged opposite each other along the second direction. Each first wall 111 is connected to a pair of second walls 112, and each second wall 112 is connected to a pair of first walls 111. The four sides of the bottom wall 113 are connected to a pair of first walls 111 and a pair of second walls 112, respectively. Thus, the bottom wall 113, the pair of first walls 111, and the pair of second walls 112 together enclose the storage compartment 3.

[0092] Thus, the air outlet 511 on the housing 51 faces the second wall 112, that is, the air duct assembly 5 outlets air towards the second wall 112.

[0093] In one specific embodiment, the housing 51 is perpendicular to the return air member 6. This further improves the temperature uniformity throughout the storage compartment 3.

[0094] In one embodiment, the heat exchange channel includes a pair of interconnected sub-channels, which are located on both sides of the air duct assembly 5.

[0095] The return air component 6 is equipped with a return air inlet 61, through which hot air from the storage room 3 enters the heat exchange channel.

[0096] In one embodiment, the return air component 6 is detachably mounted and fixed to the housing 51. Making the return air component 6 detachably mounted to the housing 51 facilitates replacement.

[0097] The structure, features and effects of this application have been described in detail above with reference to the embodiments shown in the accompanying drawings. The above description is only a preferred embodiment of this application, but this application does not limit the scope of implementation to what is shown in the drawings. Any changes made in accordance with the concept of this application, or modifications to equivalent embodiments with equivalent changes, that do not exceed the spirit covered by the specification and drawings, should be within the protection scope of this application.

Claims

1. A duct assembly (5), characterized in that, The device includes a housing (51) and a fan (52). The housing (51) is provided with an air inlet (512) and an air outlet (511). The housing (51) has an air duct (513) inside, which connects the air inlet (512) and the air outlet (511). The fan (52) is located in the air duct (513). The housing (51) has a recess (516) located on the side of the fan (52) away from the air outlet (511).

2. The air duct assembly (5) according to claim 1, characterized in that, The housing (51) includes a first end (514) and a second end (515) disposed opposite each other along a first direction. The air outlet (511) is disposed at the first end (514), the air inlet (512) is disposed at the second end (515), and the recess (516) is formed by recessing from the second end (515) toward the first end (514).

3. The air duct assembly (5) according to claim 2, characterized in that, The housing (51) has a pair of sidewalls (517) arranged opposite each other along a second direction, the second direction being perpendicular to the first direction, the notch (516) being located between the pair of sidewalls (517), the air duct (513) including an air inlet duct (5131) connecting the air inlet (512) and the fan (52), at least a portion of the air inlet duct (5131) being located between the notch (516) and the sidewalls (517).

4. The air duct assembly (5) according to claim 3, characterized in that, The air inlet duct (5131) includes a first section (51311) and a second section (51312) that are sequentially connected from the air inlet (512) to the fan (52). The first section (51311) extends along the first direction, and at least a portion of the first section (51311) is located between the recess (516) and the side wall (517).

5. The air duct assembly (5) according to claim 4, characterized in that, The housing (51) is provided with a through part (518), which is located between the fan (52) and the side wall (517).

6. The air duct assembly (5) according to claim 5, characterized in that, The through section (518) is provided in a pair, and the pair of through sections (518) are respectively located on both sides of the fan (52) along the second direction.

7. The air duct assembly (5) according to claim 5, characterized in that, The through section (518) is located between the air outlet (511) and the recess (516).

8. The air duct assembly (5) according to any one of claims 5 to 7, characterized in that, The second segment (51312) is located between the notch (516) and the through portion (518).

9. The air duct assembly (5) according to claim 5, characterized in that, It also includes a wind deflector (54), which divides the inner cavity of the housing (51) into an air inlet cavity and an air outlet cavity. The air inlet cavity is connected to the air inlet (512), and the air outlet cavity is connected to the air outlet (511). The wind deflector (54) is provided with a ventilation opening (541), which connects the air inlet cavity and the air outlet cavity. The exhaust port (521) of the fan (52) is connected to the ventilation opening (541). The wind deflector (54) is integrally formed with the peripheral wall of the through part (518).

10. A refrigeration device (100), characterized in that, Includes the air duct assembly (5) as described in any one of claims 1 to 9.

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