Air duct assembly and refrigeration equipment with same

Abstract

The air duct assembly comprises a shell, a volute and a draught fan, an air duct is arranged in the shell, an air outlet of the air duct is formed in the shell, the volute and the draught fan are both located in the air duct, the draught fan is arranged in the volute, the volute is provided with an exhaust outlet, and the exhaust outlet is located in the shell. The air outlet extends in the first direction and is provided with a center line L1 in the first direction, the air outlet is provided with a center line L2 in the first direction, and the L1 and the axis of the fan are located on the two sides of the L2 respectively. According to the air conditioner, directional conveying of the cooling capacity can be achieved, the cooling capacity exhausted by the volute exhaust outlet can be concentrated towards the opposite area of the air outlet and the volute exhaust outlet through the arrangement of the relative positions of the air outlet, the draught fan and the volute, and therefore the distribution uniformity of the cooling capacity exhausted from the air outlet towards the outside of the shell in the first direction can be improved.

Description

Technical Field

[0001] The present application relates to the field of refrigeration technology, in particular to an air duct assembly and a refrigeration device having the same. Background Art

[0002] Refrigeration equipment is used for 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 in the direction of larger volume.

[0003] However, for large-volume refrigeration equipment, the space inside the storage room is large. The temperature of the area close to the cold source is low, while the temperature of the area far from the cold source is relatively high, especially the temperature of the area close to the opening of the storage room is relatively high. The temperature distribution uniformity inside the storage room is poor, and the items stored therein cannot be effectively preserved. Summary of the invention

[0004] The purpose of the present application is to provide an air duct assembly and a refrigeration device having the same, so as to solve the problem of poor uniformity of indoor temperature distribution in a storage room of the refrigeration device.

[0005] To achieve one of the above-mentioned application purposes, an embodiment of the present application provides an air duct assembly, including a shell, a volute and a fan, the shell having an air duct, the air outlet of the air duct being arranged on the shell, the volute and the fan being both located in the air duct, the fan being arranged in the volute, the volute having an exhaust port, the exhaust port facing the air outlet, the air outlet extending along a first direction and having a center line L1 in the first direction, the exhaust port having a center line L2 in the first direction, L1 and the axis of the fan being respectively located on both sides of L2.

[0006] As a further improvement of an embodiment of the present application, the air outlet includes a first end and a second end arranged opposite to the first end along the first direction, the shell includes a first edge and a second edge arranged opposite to the first edge along the first direction, and in the first direction, the axis of the fan is located on the side of the second end facing the first edge.

[0007] As a further improvement of an embodiment of the present application, the shell includes a first edge and a second edge arranged opposite to the first edge along the first direction, and one end of the fan close to the first edge is located on L2, or the end of the fan close to the first edge is located on the side of L2 facing the first edge.

[0008] As a further improvement of an embodiment of the present application, the air outlet includes a first end and a second end arranged opposite to the first end along the first direction, the shell includes a first edge and a second edge arranged opposite to the first edge along the first direction, and the distance D1 from the first end to the first edge is less than the distance D2 from the second end to the second edge.

[0009] As a further improvement of an implementation manner of the present application, the ratio of D1 to D2 is 3:5 to 3:7.

[0010] As a further improvement of an embodiment of the present application, a dimension of the shell along the first direction is D, and a ratio of D2 to D is 5:18 to 7:18.

[0011] As a further improvement of an embodiment of the present application, the shell includes a first edge and a second edge arranged opposite to the first edge along the first direction, and the distance D3 from the axis of the fan to the first edge is greater than the distance D4 from the axis of the fan to the second edge.

[0012] As a further improvement of one embodiment of the present application, the volute includes a third end and a fourth end arranged opposite to the third end along the first direction, and the distance D5 from the axis of the fan to the third end is greater than the distance D6 from the axis of the fan to the fourth end.

[0013] To achieve one of the above-mentioned application purposes, an embodiment of the present application also provides an air duct assembly, including a shell, a volute and a fan, the shell having an air duct, the air outlet of the air duct being arranged on the shell, the volute and the fan being both located in the air duct, the fan being arranged in the volute, the volute having an exhaust port, the exhaust port facing the air outlet, the air outlet extending along a first direction, the air outlet comprising a first end and a second end arranged opposite to the first end along the first direction, the shell comprising a first edge and a second edge arranged opposite to the first edge along the first direction, a distance D1 from the first end to the first edge < a distance D2 from the second end to the second edge, a distance D3 from the axis of the fan to the first edge > a distance D4 from the axis of the fan to the second edge, the volute comprising a third end and a fourth end arranged opposite to the third end along the first direction, a distance D5 from the axis of the fan to the third end > a distance D6 from the axis of the fan to the fourth end.

[0014] In order to achieve one of the above-mentioned application purposes, an embodiment of the present application further provides a refrigeration device including the air duct assembly as described above.

[0015] Compared with the prior art, the air duct assembly of the present application and the refrigeration equipment having the same can discharge the cold in the air duct from the air outlet through the exhaust port of the volute, thereby realizing directional transportation of cold, and through the relative position setting of the air outlet, the fan and the volute, the cold discharged from the volute air outlet can be concentrated to the area opposite to the air outlet and the volute air outlet, thereby improving the uniformity of the distribution of the cold discharged from the air outlet along the first direction outside the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the three-dimensional structure of a refrigeration device according to an embodiment of the present application;

[0017] Figure 2 is a schematic diagram of the three-dimensional structure of a refrigeration device according to an embodiment of the present application, which illustrates a state where the door body is removed;

[0018] Figure 3 is a top view of a refrigeration device according to an embodiment of the present application;

[0019] Figure 4 yes Figure 3 Sectional view along line AA;

[0020] Figure 5 yes Figure 4 The enlarged schematic diagram of the middle part B;

[0021] Figure 6 It is a schematic diagram of the assembly structure of the air duct assembly and the air return component in the refrigeration equipment of one embodiment of the present application;

[0022] Figure 7 is a structural schematic diagram of an air duct assembly according to an embodiment of the present application;

[0023] Figure 8 is a schematic structural diagram of an air duct assembly from another angle according to an embodiment of the present application;

[0024] Fig. 9 is a schematic structural diagram of an air duct assembly from another angle according to an embodiment of the present application, which illustrates a state where a cover plate is removed;

[0025] Fig.10 yes Fig. 9 A schematic diagram of the structure from another angle, wherein the direction indicated by the arrow is the first direction;

[0026] Fig.11 is a schematic structural diagram of an air duct assembly from another angle according to an embodiment of the present application, which illustrates a state where the base is removed;

[0027] Fig.12 yes Fig.11 A schematic diagram of the structure from another angle, wherein the direction indicated by the arrow is the first direction;

[0028] Fig.13 A simulation test diagram of an air duct assembly according to an embodiment of the present application.

[0029] Description of reference numerals:

[0030] 100, refrigeration equipment; 1, box body; 11, liner; 111, first wall; 112, second wall; 113, third wall; 12, box shell; 2, door body; 3, storage compartment; 4, evaporation tube; 5, air duct assembly; 51, shell; 511, air outlet; 5111, first end; 5112, second end; 512, air inlet; 513, first side; 514, second side; 515, base; 516, cover plate; 517, air inlet chamber; 518, air outlet chamber; 52, volute; 521, air outlet; 522, air intake; 523, third end; 524, fourth end; 53, fan; 531, rotating shaft; 54, air guide member; 541, vent; 542, first guide portion; 543, second guide portion; 544, connecting portion; 545, air guide slope; 6, return air member; 61, return air outlet. DETAILED DESCRIPTION

[0031] The present application will be described in detail below with reference to the specific embodiments shown in the accompanying drawings.

[0032] In the various drawings of the present application, for the sake of convenience of illustration, some dimensions of structures or parts are exaggerated relative to other structures or parts, and therefore, are only used to illustrate the basic structure of the subject matter of the present application.

[0033] It should be understood that although the terms "first", "second", "third", etc. may be used in this article 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 each other.

[0034] Ginseng Figures 1 to 3 As shown, an embodiment of the present application provides a refrigeration device 100, including a box body 1, a door body 2 and a refrigeration unit, the box body 1 has a storage compartment 3, 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.

[0035] The refrigeration device 100 in this embodiment is a direct cooling refrigeration device 100, that is, it uses a direct cooling method to cool the items stored in the storage compartment 3. The refrigeration device 100 can be specifically configured as a refrigerator, a freezer, a wine cabinet, etc., especially a large-volume refrigeration device 100. In this embodiment, the refrigeration device 100 is described as a horizontal freezer as an example.

[0036] Specifically, the refrigeration unit includes a compressor, a condenser, a throttling device and an evaporator connected in sequence.

[0037] Combination Figures 4 to 5 The box body 1 includes an inner liner 11 and a box shell 12 arranged outside the inner liner 11, the inner liner 11 defines a storage compartment 3, and the evaporator includes an evaporation tube 4 wound around the outer periphery of the inner liner 11; the evaporation tube 4 transfers cold energy to the storage compartment 3 through the inner liner 11 by natural radiation, thereby cooling the items stored in the storage compartment 3.

[0038] In this natural radiation cooling method in which the evaporator tube 4 is wound around the outer periphery of the inner tank 11, cold energy is transferred from the inner tank 11 to the middle area of ​​the storage room 3. However, the space in the storage room 3 is usually large, which will lead to a large temperature difference between the various areas in the storage room 3 and poor temperature uniformity. In addition, the storage room 3 has an opening. Especially when the door body 2 is opened, more cold energy at the opening of the storage room 3 is dissipated to the outside, which will cause the temperature of the area near the opening of the storage room 3 to be significantly higher than the area near the inner tank 11, further aggravating the temperature unevenness in the storage room 3.

[0039] See also Figure 2 The refrigeration device 100 also includes an air duct assembly 5, which is arranged in the storage compartment 3 and connected to the inner tank 11, so that the cold energy generated by the evaporating tube 4 can be transported to the area of ​​the storage compartment 3 away from the inner tank 11 through the air duct assembly 5, thereby improving the temperature uniformity in the storage compartment 3.

[0040] Specifically, see Figures 6 to 12 The air duct assembly 5 includes a shell 51, a volute 52 and a fan 53. The shell 51 has an air duct. The air outlet 511 of the air duct is arranged on the shell 51. The volute 52 and the fan 53 are both located in the air duct. The fan 53 is arranged in the volute 52. The volute 52 has an exhaust port 521, and the exhaust port 521 faces the air outlet 511. In this way, the cold in the air duct can be discharged from the air outlet 511 through the exhaust port 521 of the volute 52, thereby realizing the directional transportation of cold.

[0041] See also Fig.10 , the air outlet 511 extends along the first direction, and the air outlet 511 has a center line L1 in the first direction, and the air outlet 521 has a center line L2 in the first direction. The fan 53 has a rotating shaft 531, and the fan 53 rotates around its rotating shaft 531. In other words, the fan 53 has an axis, which is the center line of the rotating shaft 531, and the fan 53 rotates around its axis. L1 and the axis of the fan 53 are located on both sides of L2 respectively.

[0042] In this way, after the fan 53 sends out the cooling capacity through the air outlet 521 of the volute 52, due to the misalignment of the relative positions of the air outlet 511 and the air outlet 521 of the volute 52, the air resistance in the area on the side of the air duct L2 facing the rotating shaft 531 of the fan 53 is relatively large, and the speed of the cooling capacity discharged from the air outlet 521 flowing towards the area on the side of the air duct L2 facing the rotating shaft 531 of the fan 53 decreases. As a result, the cooling capacity discharged from the air outlet 521 can be concentrated towards the area where the air outlet 511 is opposite to the air outlet 521 of the volute 52. That is to say, by setting the relative positions of the air outlet 511, the fan 53 and the volute 52, the cooling capacity discharged from the air outlet 521 of the volute 52 can be concentrated towards the area where the air outlet 511 is opposite to the air outlet 521 of the volute 52, thereby improving the uniformity of the distribution of the cooling capacity discharged from the air outlet 511 along the first direction on the outer edge of the housing 51.

[0043] According to GB / T21001.2-2015 Refrigerated display cabinets - Part 2: Classification, requirements and test conditions, a simulation test was carried out. See the figure Fig.13 It can be clearly seen that affected by the relative positions of the air outlet 511, the volute 52 and the fan 53, the air field between the air outlet 521 of the volute 52 and the air outlet 511 has changed, and the air outlet direction has deflected, tending to blow air towards the position where the air outlet 511 is directly opposite to the air outlet 521 of the volute 52. After the cooling capacity is discharged from the air outlet 511 to the storage compartment 3, the uniformity of the distribution of the cooling capacity discharged from the air outlet 511 along the first direction on the outer edge of the housing 51 can be improved.

[0044] In this embodiment, L1 is perpendicular to the opening direction of the storage compartment 3, that is, the air outlet 511 extends along a direction perpendicular to the opening of the storage compartment 3.

[0045] See Fig. 9 See, in one embodiment, an air inlet 512 is further provided on the housing 51, and the air duct communicates the air inlet 512 and the air outlet 511. The air duct includes an air inlet duct and an air outlet duct. The air inlet duct communicates the air inlet 512 and the volute 52, and the air outlet duct communicates the volute 52 and the air outlet 511.

[0046] See Fig.10 See, in this embodiment, the air outlet 511 includes a first end 5111 and a second end 5112 oppositely arranged along the first direction with respect to the first end 5111. The housing 51 includes a first side 513 and a second side 514 oppositely arranged along the first direction with respect to the first side 513. The distance from the first end 5111 to the first side 513 is D1, and the distance from the second end 5112 to the second side 514 is D2, and D1 < D2. That is to say, in the first direction, the air outlet 511 is arranged closer to the first side 513.

[0047] In this embodiment, the distance from the axis of the fan 53 to the first side 513 is D3, and the distance from the axis of the fan 53 to the second side 514 is D4, D3>D4. That is, in the first direction, the fan 53 is arranged closer to the second side 514.

[0048] Through such an arrangement, the space inside the shell 51 can be effectively utilized, the relative positions of the air outlet 511, the fan 53 and the volute 52 can be reasonably arranged, and a better air outlet effect can be achieved.

[0049] In this embodiment, the fan 53 is a turbine fan, and the fan 53 has an axial air inlet side, that is, the fan 53 takes in air from its axial direction and discharges air from its radial direction. The axis of the fan 53 is perpendicular to the first direction, and the axis of the fan 53 is also perpendicular to L1, that is, the axis of the fan 53 is also perpendicular to the opening of the storage compartment 3.

[0050] The volute 52 has an air intake port 522 opposite to the axial air intake side of the fan 53 , an air inlet duct is formed between the air intake port 522 and the air inlet 512 of the volute 52 , and an air outlet duct is formed between the air outlet 521 and the air outlet 511 of the volute 52 .

[0051] Furthermore, the volute 52 includes a third end 523 and a fourth end 524 arranged opposite to the third end 523 along the first direction, the distance from the axis of the fan 53 to the third end 523 is D5, the distance from the axis of the fan 53 to the fourth end 524 is D6, and D5>D6. That is, in the volute 52, the space of the fan 53 toward the first side 513 is larger than the space of the fan 53 toward the second side 514, and when the fan 53 rotates, the cold energy flows from the space of the fan 53 toward the first side 513 in the volute 52 to the space of the fan 53 toward the second side 514 in the volute 52, and then is discharged from the exhaust port 521 of the volute 52 and enters the air outlet duct.

[0052] Due to the structure of the volute 52 and the positional arrangement of the air outlet, the fan 53 and the exhaust outlet 521 of the volute 52, the wind resistance in the area of ​​the air duct close to the second side 514 is relatively large, and the speed at which the cold air discharged from the exhaust outlet 521 flows to the area of ​​the air duct close to the second side 514 is reduced, thereby concentrating the cold air discharged from the exhaust outlet 521 to the area opposite to the air outlet 511 and the exhaust outlet 521 of the volute 52, thereby improving the uniformity of the distribution of the cold air discharged from the air outlet 511 to the outside of the shell 51 along the first direction.

[0053] In this embodiment, the first side 513 is parallel to the second side 514, and the midline L2 of the exhaust port 521 of the volute 52 in the first direction is roughly located on the axis of symmetry between the first side 513 and the second side 514, that is, the first side 513 and the second side 514 are roughly symmetrical to each other about L2, that is, the exhaust port 521 of the volute 52 is roughly located in the middle of the shell 51 along the second direction.

[0054] Preferably, in the first direction, the axis of the fan 53 is located on the side of the second end 5112 toward the first edge 513, that is, in the opening direction of the storage compartment 3, the fan 53 at least partially overlaps with the air outlet 511, thereby ensuring that the cold air discharged from the air outlet 521 is concentrated in the middle area of ​​the air outlet 511, thereby improving the uniformity of the distribution of the cold air discharged from the air outlet 511 to the outside of the shell 51 along the first direction.

[0055] More specifically, in the first direction, the axis of the fan 53 is located between the first end 5111 and the second end 5112 of the air outlet 511 .

[0056] Preferably, one end of the fan 53 close to the first side 513 is located on L2, that is, one end of the fan 53 close to the first side 513 is approximately located on the symmetry axis of the first side 513 and the second side 514. Alternatively, one end of the fan 53 close to the first side 513 is located on the side of L2 facing the first side 513, so that the fan 53 and the volute 52 can be reasonably arranged to maximize the role of the vortex fan and improve the air supply efficiency.

[0057] Furthermore, the ratio of the distance D1 from the first end 5111 to the first side 513 to the distance D2 from the second end 5112 to the second side 514 is 3:5-3:7. In this way, the uniformity of the cold discharged from the air outlet 511 in the storage compartment 3 along the first direction can be further improved.

[0058] More preferably, the dimension of the housing 51 along the first direction is D, and the ratio of the distance D2 from the second end 5112 of the air outlet 511 to the second edge 514 to D is 5:18 to 7:18.

[0059] Preferably, the ratio of the size of the air outlet 511 to the size of the housing 51 along the first direction is 2:3. Since the first end 5111 and the second end 5112 of the air outlet 511 are both close to the inner liner 11, the temperature of the area close to the inner liner 11 in the storage compartment 3 is relatively low, and the temperature of the area farther from the inner liner 11 in the storage compartment 3 is higher, so the air outlet 511 is mainly arranged at a position on the housing 51 far away from the inner liner 11, thereby avoiding aggravating the temperature non-uniformity in the storage compartment 3.

[0060] See also Figures 7 to 12The housing 51 includes a base 515 and a cover plate 516 buckled on the base 515, and an air duct is formed between the base 515 and the cover plate 516. The base 515 and the cover plate 516 can be mounted and fixed by buckling with a snap-fit ​​piece.

[0061] The turbine fan 53 is fixed on the base 515, and the volute 52 cover is arranged outside the turbine fan 53 and is installed and fixed on the base 515. Specifically, a volute 52 positioning column adapted to the volute 52 is provided on the base 515, and the volute 52 has an opening at one end facing the base 515, and the volute 52 is buckled on the volute 52 positioning column, so as to realize the installation and fixation of the volute 52 and the base 515, and the structure of the volute 52 is simplified by using the base 515, and the space occupied by the volute 52 in the air duct is reduced, thereby reducing the volume of the air duct assembly 5, and the base 515 can realize the blocking of the opening of the volute 52, and a volute 52 cavity is formed between the base 515 and the volute 52, and the fan 53 is located in the volute 52 cavity.

[0062] The air inlet 522 of the volute 52 faces the cover plate 516 , and there is a gap between the volute 52 and the cover plate 516 . The air inlet 512 and the air outlet 511 of the air duct are respectively disposed on opposite sides of the volute 52 .

[0063] See also Fig. 9 as well as Figure 11 to Figure 12 The air duct assembly 5 also includes an air guide member 54, which is located between the base 515 and the cover plate 516. The air guide member 54 divides the inner cavity of the shell 51 into an air inlet cavity 517 and an air outlet cavity 518. The air inlet cavity 517 is connected to the air inlet port 512, and the air outlet cavity 518 is connected to the air outlet port 511. The air inlet duct is located in the air inlet cavity 517, and the air outlet duct is located in the air outlet cavity 518, or the air outlet cavity 518 directly forms an air outlet duct.

[0064] A vent 541 is provided on the air guide member 54, and the vent 541 connects the air inlet chamber 517 and the air outlet chamber 518. The volute 52 is arranged at the vent 541, and the exhaust port 521 of the volute 52 is opposite to the vent 541, so that the cold air discharged from the exhaust port 521 of the volute 52 is directly blown to the air outlet chamber 518.

[0065] In this embodiment, the air duct assembly 5 is arranged parallel to the opening direction of the storage compartment 3 , and along the opening direction of the storage compartment 3 , the air inlet cavity 517 and the air outlet cavity 518 are relatively arranged on opposite sides of the vent 541 .

[0066] One end of the air guide member 54 facing the base 515 is arranged in close contact with the base 515 , and one end of the air guide member 54 facing the cover plate 516 is arranged in close contact with the cover plate 516 , that is, the air guide member 54 is clamped and fixed between the base 515 and the cover plate 516 .

[0067] Preferably, the air guide member 54 is made of foam, which can not only reduce the weight of the air guide member 54 and reduce the manufacturing cost, but also make the air guide member 54 fit more closely with the base 515 and the cover plate 516. In addition, the foam member can withstand a certain deformation, so that it can be tightly pressed and fit between the cover plate 516 and the base 515, thereby avoiding the situation where cold air leaks out from the gap between the air guide member 54 and the base 515 and the cover plate 516 to reduce the cooling efficiency. The cold air can more efficiently enter from the air inlet 512 along the extension direction of the air duct and then be discharged from the air outlet 511.

[0068] The air guide member 54 includes a first guide portion 542, a second guide portion 543, and a connecting portion 544, wherein the connecting portion 544 connects the first guide portion 542 and the second guide portion 543. In the first direction, the first guide portion 542 and the second guide portion 543 are respectively located on both sides of the vent 541, and the first guide portion 542 and the second guide portion 543 are used to guide and disperse the cold discharged from the vent 541 toward the direction of the air outlet 511.

[0069] The first guide portion 542 and the second guide portion 543 both have an air guiding slope 545, and the air guiding slope 545 of the first guide portion 542 and the air guiding slope 545 of the second guide portion 543 are arranged in a trumpet shape. The air guiding slope 545 of the first guide portion 542 and the air guiding slope 545 of the second guide portion 543 constitute the inner wall of the air outlet cavity 518, and the size of the air outlet cavity 518 gradually increases from the vent 541 to the air outlet 511.

[0070] The air outlet 511 is located between the air guiding inclined surface 545 of the first guiding portion 542 and the air guiding inclined surface 545 of the second guiding portion 543 .

[0071] Preferably, the wind guiding inclined surface 545 of the first guiding portion 542 and the wind guiding inclined surface 545 of the second guiding portion 543 are symmetrically arranged on two opposite sides of the vent 541 along the first direction.

[0072] In one embodiment, a heat insulating member is further provided in the shell 51. The heat insulating member is provided in the air duct and is arranged close to the shell 51, thereby reducing the heat exchange between the cold in the air duct and the air outside the shell 51 during the process of being transported to the air outlet 511, so that the cold is concentratedly sent out from the air outlet 511 to the storage compartment 3, thereby improving the temperature uniformity effect, preventing the hot air outside the shell 51 from exchanging heat with the cold in the air duct through the shell 51, and further preventing the air in the air duct from warming up.

[0073] In one embodiment, the thermal insulation member is only disposed on one side of the air duct close to the base 515; in another embodiment, the thermal insulation member may also be only disposed on one side of the air duct close to the cover plate 516; in yet another embodiment, at least two thermal insulation members may be disposed, one of which is disposed close to the base 515, and the other of which is disposed close to the cover plate 516, thereby increasing the insulation area and further avoiding heat exchange between the hot air outside the shell 51 and the cold air in the air duct.

[0074] Specifically, the heat insulating member may be fixedly adhered to the shell 51 or pressed and fitted to the shell 51 .

[0075] In a specific embodiment, the thermal insulation member may be made of polyethylene thermal insulation material.

[0076] In one embodiment, the heat insulation member is only arranged in the air outlet cavity 518. Since the air outlet 511 of the air duct is arranged at the opening of the housing 51 close to the storage compartment 3, compared with the air inlet duct, the air outlet duct is relatively arranged at a position close to the opening of the storage compartment 3, so it is easier to generate heat exchange with the air outside the housing 51. The air inlet duct is relatively arranged at a position far away from the opening of the storage compartment 3. The cold capacity at this position is relatively sufficient, and the temperature in the space of the storage compartment 3 outside the housing 51 is relatively low. Therefore, the cold capacity in the air inlet duct and the heat exchange of the air outside the housing 51 are less. Therefore, only arranging the heat insulation component in the air outlet cavity 518 can reduce the material consumption of the heat insulation member and save costs.

[0077] See also Figure 2 and Figure 6 In this embodiment, the refrigeration device 100 further includes a return air member 6, and the air duct assembly 5 is connected to the inner tank 11 through the return air member 6. The return air member 6 is connected to the inner tank 11, and a heat exchange channel is formed between the return air member 6 and the inner tank 11. The heat exchange channel, the air duct, and the storage room 3 are sequentially connected to form a circulating air path. Since the air outlet 511 of the air duct is arranged at the opening of the shell 51 close to the storage room 3, the cold energy generated by the evaporation tube 4 can be transmitted to the area close to the opening of the storage room 3 through the heat exchange channel in the return air member 6 and the air duct in the air duct assembly 5, and the cold energy can flow from the area close to the opening of the storage room 3 to the return air member 6, thereby improving the uniformity of the cold energy distribution in the storage room 3.

[0078] The air inlet 512 of the air duct is disposed at one end of the housing 51 away from the opening of the storage compartment 3 .

[0079] See also Figure 2 In one embodiment, the inner tank 11 includes a pair of first walls 111 arranged opposite to each other, and the air return member 6 is arranged on the first walls 111 .

[0080] The first wall 111 extends along the second direction, a pair of first walls 111 are arranged opposite to each other along the first direction, and the air return member 6 is arranged on the first wall 111. The second direction is perpendicular to the first direction, and the second direction is also perpendicular to the opening direction of the storage compartment 3.

[0081] Preferably, the air return member 6 extends along the second direction.

[0082] Correspondingly, a pair of return air components 6 are also provided, and the pair of return air components 6 are respectively provided on a pair of first walls 111 , and two ends of the air duct assembly 5 along the first direction are respectively connected to the pair of return air components 6 .

[0083] In addition, the inner tank 11 further includes a pair of second walls 112 arranged opposite to each other along the second direction, each first wall 111 is respectively connected to a pair of second walls 112, and each second wall 112 is respectively connected to a pair of first walls 111. The inner tank 11 further includes a third wall 113 arranged opposite to the opening of the storage compartment 3, and the four sides of the third wall 113 are respectively connected to the pair of first walls 111 and the pair of second walls 112, so that the third wall 113, the pair of first walls 111, and the pair of second walls 112 together enclose the storage compartment 3.

[0084] In one embodiment, a pair of return air components 6 are arranged opposite to each other along the first direction, and the two ends of the duct assembly 5 along the first direction are respectively connected to a pair of return air components 6, and the air outlet 511 on the shell 51 faces the second wall 112, that is, the duct assembly 5 discharges air toward the second wall 112.

[0085] In one embodiment, the dimension of the first wall 111 along the second direction is greater than the dimension of the second wall 112 along the first direction. In the second direction, the air duct assembly 5 is approximately located in the middle of the storage compartment 3, which is more conducive to improving the temperature uniformity of the air duct assembly 5 on the storage compartment 3, thereby improving the temperature uniformity in the storage compartment 3.

[0086] In a specific embodiment, the air duct assembly 5 is perpendicular to the first wall 111, that is, the air duct assembly 5 extends along a plane formed by the first direction and the opening direction of the storage compartment 3. This can further improve the temperature uniformity in the entire storage compartment 3.

[0087] In one embodiment, the heat exchange channel includes a pair of sub-channels that are interconnected, and the pair of sub-channels are respectively located on both sides of the air duct assembly 5 .

[0088] The air return member 6 is provided with a pair of air return ports 61 , and the pair of air return ports 61 are respectively located on both sides of the air duct assembly 5 along the second direction.

[0089] Correspondingly, the air duct assembly 5 is provided with two air outlets 511, and the two air outlets 511 are relatively arranged at the two ends of the air duct assembly 5 along the second direction, so that the air outlets 511 can correspond to the return air outlets 61 one by one, and the storage compartments 3 on both sides of the air duct assembly 5 can be evenly heated.

[0090] In this embodiment, the air return member 6 is detachably mounted on the housing 51. The air return member 6 is detachably mounted on the housing 51, so that it can be easily replaced.

[0091] In summary, the air duct assembly 5 of the present application and the refrigeration equipment 100 having the same can discharge the cold in the air duct from the air outlet 511 through the exhaust port 521 of the volute 52, thereby realizing directional transportation of cold, and through the relative position setting of the air outlet 511, the fan 53 and the volute 52, the cold discharged from the exhaust port 521 of the volute 52 can be concentrated to the area opposite to the air outlet 511 and the exhaust port 521 of the volute 52, thereby improving the uniformity of the distribution of the cold discharged from the air outlet 511 to the outside of the shell 51 along the first direction.

[0092] The above describes in detail the structure, features and effects of the present application based on the embodiments shown in the accompanying drawings. The above is only a preferred embodiment of the present application, but the present application does not limit the scope of implementation to what is shown in the drawings. Any changes made in accordance with the concept of the present application, or modifications to equivalent embodiments with equivalent changes, which do not exceed the spirit covered by the description and drawings, should be within the protection scope of the present application.

Claims

1. An air duct assembly (5), characterized in that: The invention comprises a shell (51), a volute (52) and a fan (53), wherein the shell (51) has an air duct, an air outlet (511) of the air duct is arranged on the shell (51), the volute (52) and the fan (53) are both located in the air duct, the fan (53) is arranged in the volute (52), the volute (52) has an air outlet (521), the air outlet (521) faces the air outlet (511), the air outlet (511) extends along a first direction and has a center line L1 in the first direction, the air outlet (521) has a center line L2 in the first direction, L1 and the axis of the fan (53) are respectively located on both sides of L2.

2. The air duct assembly (5) according to claim 1, characterized in that: The air outlet (511) includes a first end (5111) and a second end (5112) arranged opposite to the first end (5111) along the first direction, and the shell (51) includes a first edge (513) and a second edge (514) arranged opposite to the first edge (513) along the first direction, and in the first direction, the axis of the fan (53) is located on the side of the second end (5112) facing the first edge (513).

3. The air duct assembly (5) according to claim 2, characterized in that: One end of the fan (53) close to the first edge (513) is located on L2, or one end of the fan (53) close to the first edge (513) is located on the side of L2 facing the first edge (513).

4. The air duct assembly (5) according to claim 1, characterized in that: The air outlet (511) includes a first end (5111) and a second end (5112) arranged opposite to the first end (5111) along the first direction, the shell (51) includes a first edge (513) and a second edge (514) arranged opposite to the first edge (513) along the first direction, and the distance D1 from the first end (5111) to the first edge (513) is less than the distance D2 from the second end (5112) to the second edge (514).

5. The air duct assembly (5) according to claim 4, characterized in that: The ratio of D1 to D2 is 3:5 to 3:

7.

6. The air duct assembly (5) according to claim 4, characterized in that: The dimension of the shell (51) along the first direction is D, and the ratio of D2 to D is 5:18 to 7:

18.

7. The air duct assembly (5) according to claim 1, characterized in that: The shell (51) includes a first side (513) and a second side (514) arranged opposite to the first side (513) along the first direction, and a distance D3 from the axis of the fan (53) to the first side (513) is greater than a distance D4 from the axis of the fan (53) to the second side (514).

8. The air duct assembly (5) according to claim 1, characterized in that: The volute (52) includes a third end (523) and a fourth end (524) arranged opposite to the third end (523) along the first direction, and a distance D5 from the axis of the fan (53) to the third end (523) is greater than a distance D6 from the axis of the fan (53) to the fourth end (524).

9. An air duct assembly (5), characterized in that: The invention comprises a shell (51), a volute (52) and a fan (53), wherein the shell (51) has an air duct, an air outlet (511) of the air duct is arranged on the shell (51), the volute (52) and the fan (53) are both located in the air duct, the fan (53) is arranged in the volute (52), the volute (52) has an air outlet (521), the air outlet (521) faces the air outlet (511), the air outlet (511) extends along a first direction, the air outlet (511) comprises a first end (5111) and a second end (5112) arranged opposite to the first end (5111) along the first direction, the shell (51) comprises a first edge (513) and a second edge (512) arranged along the first direction. A second side (514) is arranged opposite to the first side (513) in a first direction, a distance D1 from the first end (5111) to the first side (513) is less than a distance D2 from the second end (5112) to the second side (514), a distance D3 from the axis of the fan (53) to the first side (513) is greater than a distance D4 from the axis of the fan (53) to the second side (514), the volute (52) includes a third end (523) and a fourth end (524) arranged opposite to the third end (523) along the first direction, a distance D5 from the axis of the fan (53) to the third end (523) is greater than a distance D6 from the axis of the fan (53) to the fourth end (524).

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

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