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] This application relates to the field of refrigeration technology, and in particular to duct components and refrigeration equipment having the same. 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 has a large storage room, and the temperature in the area closer to the cold source is lower, while the temperature in the area farther away from the cold source is relatively higher. In particular, the temperature near the opening of the storage room is relatively high, and the temperature distribution in the storage room is not uniform, which makes it impossible to effectively preserve the items stored in it. Summary of the Invention

[0004] The purpose of this 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 the storage room of the refrigeration device.

[0005] To achieve one of the above-mentioned objectives, one embodiment of this application provides a duct assembly, including a housing, a volute, and a fan. The housing has a duct, and the air outlet of the duct is disposed on the housing. The volute and the fan are both located in the duct. The fan is disposed inside the volute. The volute has an exhaust port facing the air outlet. The exhaust port extends along a first direction and has a centerline L1 in the first direction. The exhaust port has a centerline L2 in the first direction. L1 and the axis of the fan are respectively located on both sides of L2.

[0006] As a further improvement of one embodiment of this application, the air outlet includes a first end and a second end disposed opposite to the first end along the first direction, the housing includes a first side and a second side disposed opposite to the first side 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 side.

[0007] As a further improvement of one embodiment of this application, the housing includes a first side and a second side disposed opposite to the first side along the first direction, and the end of the fan near the first side is located on L2, or the end of the fan near the first side is located on the side of L2 facing the first side.

[0008] As a further improvement of one embodiment of this application, the air outlet includes a first end and a second end disposed opposite to the first end along the first direction, the housing includes a first side and a second side disposed opposite to the first side along the first direction, and the distance D1 from the first end to the first side is less than the distance D2 from the second end to the second side.

[0009] As a further improvement of one embodiment of this application, the ratio of D1 to D2 is 3:5 to 3:7.

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

[0011] As a further improvement of one embodiment of this application, the housing includes a first side and a second side disposed opposite to the first side along the first direction, wherein the distance D3 from the axis of the fan to the first side is greater than the distance D4 from the axis of the fan to the second side.

[0012] As a further improvement of one embodiment of this application, the volute includes a third end and a fourth end disposed opposite to the third end along the first direction, wherein 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 objectives, one embodiment of this application also provides a duct assembly, including a housing, a volute, and a fan. The housing has a duct, and the air outlet of the duct is disposed on the housing. The volute and the fan are both located in the duct. The fan is disposed inside the volute, and the volute has an exhaust port facing the exhaust port. The exhaust port extends along a first direction and includes a first end and a second end disposed opposite to the first end along the first direction. The housing includes a first side and a second side disposed opposite to the first side along the first direction. The distance D1 from the first end to the first side is less than the distance D2 from the second end to the second side. The distance D3 from the axis of the fan to the first side is greater than the distance D4 from the axis of the fan to the second side. The volute includes a third end and a fourth end disposed opposite to the third end along the first direction. 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.

[0014] To achieve one of the above-mentioned objectives, one embodiment of this application also provides a refrigeration device including the air duct assembly described above.

[0015] Compared with the prior art, the air duct assembly and refrigeration equipment having the present application can discharge the cold energy in the air duct from the air outlet through the exhaust port of the volute, thereby realizing the directional delivery of cold energy. Furthermore, by setting the relative positions of the air outlet, the fan and the volute, the cold energy discharged from the exhaust port of the volute can be concentrated in the area opposite to the exhaust port of the volute, thereby improving the uniformity of the distribution of the cold energy discharged from the exhaust port to the outside of the shell along the first direction. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a refrigeration device according to an embodiment of this application;

[0017] 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;

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

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

[0020] Figure 5 yes Figure 4 Enlarged diagram of section B in the middle;

[0021] Figure 6 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;

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

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

[0024] Figure 9 This is a structural schematic diagram of a duct assembly according to an embodiment of this application from another angle, illustrating the state with the cover plate removed;

[0025] Figure 10 yes Figure 9 A structural diagram from another angle, where the arrow indicates the first direction;

[0026] Figure 11 This is a schematic diagram of the air duct assembly according to an embodiment of the present application from another angle, which shows the state without the base;

[0027] Figure 12 yes Figure 11 A structural diagram from another angle, where the arrow indicates the first direction;

[0028] Figure 13 Simulation test diagram of the air duct assembly according to an embodiment of the present application.

[0029] Explanation of reference numerals:

[0030] 100, refrigeration equipment; 1, box body; 11, inner liner; 111, first wall; 112, second wall; 113, third wall; 12, box shell; 2, door body; 3, storage compartment; 4, evaporation pipe; 5, air duct assembly; 51, housing; 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, exhaust port; 522, suction port; 523, third end; 524, fourth end; 53, fan; 531, rotating shaft; 54, air guiding member; 541, ventilation port; 542, first guiding portion; 543, second guiding portion; 544, connecting portion; 545, air guiding inclined surface; 6, return air member; 61, return air port. Detailed implementation manners

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

[0032] In the various drawings of the present application, for the convenience of illustration, the dimensions of some structures or parts are enlarged relative to other structures or parts. Therefore, it is 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 herein to describe various elements, structures or parameters, the described objects should not be limited by these terms. These terms are only used to distinguish the described objects from each other.

[0034] [[ID=2,2]]Refer Figures 1 to 3 As shown, an embodiment of the present application provides a refrigeration equipment 100, including a box body 1, a door body 2 and a refrigeration unit. There is a storage compartment 3 in the box 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.

[0035] The refrigeration equipment 100 in this embodiment is a direct cooling type refrigeration equipment 100, that is, it uses the direct cooling method to cool the items stored in the storage compartment 3. The refrigeration equipment 100 can be specifically set as a refrigerator, a freezer, a wine cabinet, etc., especially a refrigeration equipment 100 with a large volume. In this embodiment, the refrigeration equipment 100 is taken as a horizontal freezer as an example for description.

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

[0037] Combined with Figures 4 to 5 The 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.

[0038] 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.

[0039] See Figure 2 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.

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

[0041] See Figure 10 The air outlet 511 extends along a first direction and has a centerline L1 in the first direction. The exhaust outlet 521 has a centerline L2 in the first direction. The fan 53 has a rotating shaft 531 around which it rotates. In other words, the fan 53 has an axis, which is the centerline of the rotating shaft 531, and the fan 53 rotates around its axis. L1 and the axis of the fan 53 are located on opposite sides of L2.

[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 for simulation tests, see the figure Figure 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 the direction perpendicular to the opening of the storage compartment 3.

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

[0046] See Figure 10 , in this embodiment, 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 housing 51 includes a first side 513 and a second side 514 arranged opposite to the first side 513 along the first direction. 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, where D3 > D4. That is, in the first direction, the fan 53 is positioned closer to the second side 514.

[0048] With this setup, the space inside the housing 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. The fan 53 has an axial air intake side, that is, the fan 53 takes in air from its axial direction and exits 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 room 3.

[0050] The volute 52 has an air inlet 522 that is opposite to the axial air inlet side of the fan 53. An air inlet duct is formed between the air inlet 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 disposed 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, and the distance from the axis of the fan 53 to the fourth end 524 is D6, where D5 > D6. That is, in the volute 52, the space of the fan 53 facing the first side 513 is larger than the space of the fan 53 facing the second side 514. When the fan 53 rotates, the cooling energy flows from the space of the fan 53 facing the first side 513 in the volute 52 to the space of the fan 53 facing 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] By adjusting the structure of the volute 52 and the positional arrangement of the air outlet, fan 53, and exhaust port 521 of the volute 52, the area near the second side 514 in the air duct has a larger air resistance. The flow speed of the cold energy discharged from the exhaust port 521 towards the area near the second side 514 in the air duct is reduced. This allows the cold energy discharged from the exhaust port 521 to concentrate in the area opposite the air outlet 511 and the exhaust port 521 of the volute 52, thereby improving the uniformity of the distribution of the cold energy discharged from the air outlet 511 to the outside of the casing 51 along the first direction.

[0053] In this embodiment, the first side 513 and the second side 514 are parallel. The center line L2 of the vent 521 of the volute 52 in the first direction is approximately 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 approximately symmetrical about L2. In other words, the vent 521 of the volute 52 is approximately 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 facing the first side 513. That is, in the opening direction of the storage compartment 3, the fan 53 and the air outlet 511 at least partially overlap, thereby ensuring that the cold energy discharged from the exhaust port 521 is concentrated in the middle area of ​​the air outlet 511, thereby improving the uniformity of the distribution of the cold energy discharged from the air outlet 511 to the outside of the housing 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, the end of the fan 53 closest to the first side 513 is located on L2, that is, the end of the fan 53 closest to the first side 513 is approximately located on the axis of symmetry between the first side 513 and the second side 514. Alternatively, the end of the fan 53 closest to the first side 513 is located on the side of L2 facing the first side 513, thereby allowing for a reasonable arrangement of the fan 53 and the volute 52, maximizing the effect of the vortex fan and improving air delivery 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 to 3:7. This can further improve the uniformity of the distribution of the cold energy discharged from the air outlet 511 along the first direction in the storage compartment 3.

[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 side 514 to D is 5:18 to 7:18.

[0059] Preferably, the ratio of the dimensions of the air outlet 511 to the dimensions 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 in the storage compartment 3 near the inner liner 11 is relatively low, while the temperature in the storage compartment 3 is higher in the area farther away from the inner liner 11. Therefore, the air outlet 511 is mainly located on the housing 51 away from the inner liner 11, thereby avoiding aggravating the temperature unevenness in the storage compartment 3.

[0060] See Figures 7 to 12The housing 51 includes a base 515 and a cover plate 516 fastened to 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 installed and fixed by means of snap-fit ​​fasteners.

[0061] The turbine fan 53 is fixed on the base 515, and the volute 52 covers the turbine fan 53 and is installed and fixed on the base 515. Specifically, the base 515 is provided with a volute 52 positioning post that is adapted to the volute 52. The end of the volute 52 facing the base 515 has an opening. The volute 52 is fastened to the volute 52 positioning post, thereby realizing the installation and fixation of the volute 52 and the base 515. The base 515 simplifies the structure of the volute 52 and reduces the space occupied by the volute 52 in the air duct, thereby reducing the volume of the air duct assembly 5. The base 515 can also seal the opening of the volute 52, forming a volute 52 cavity between the base 515 and the volute 52. The fan 53 is located in the volute 52 cavity.

[0062] The air intake 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 located on opposite sides of the volute 52.

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

[0064] The air guide 54 is provided with a vent 541, which connects the air inlet chamber 517 and the air outlet chamber 518. The volute 52 is located 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 blows directly 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 chamber 517 and the air outlet chamber 518 are arranged opposite to each other on the opposite sides of the ventilation opening 541.

[0066] The air guide 54 is attached to the base 515 at one end and to the cover plate 516 at the other end, meaning that the air guide 54 is clamped and fixed between the base 515 and the cover plate 516.

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

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

[0069] Both the first guide section 542 and the second guide section 543 have air guiding slopes 545. The air guiding slopes 545 of the first guide section 542 and the second guide section 543 are arranged in a trumpet shape. The air guiding slopes 545 of the first guide section 542 and the second guide section 543 form the inner wall of the air outlet cavity 518. 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 guide slope 545 of the first guide section 542 and the air guide slope 545 of the second guide section 543.

[0071] Preferably, the air guiding slope 545 of the first guide section 542 and the air guiding slope 545 of the second guide section 543 are symmetrically arranged on opposite sides of the vent 541 along the first direction.

[0072] In one embodiment, a heat insulation element is also provided in the housing 51. The heat insulation element is disposed in the air duct and is fitted to the housing 51. This can reduce the heat exchange between the cold air in the air duct 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 and preventing the hot air outside the housing 51 from exchanging heat with the cold air in the air duct through the housing 51, thereby preventing the air in the air duct from warming up.

[0073] In one embodiment, the heat insulation element is only disposed on the side of the air duct that is against the base 515; in another embodiment, the heat insulation element may also be disposed on the side of the air duct that is against the cover plate 516; in yet another embodiment, at least two heat insulation elements may be disposed, one of which is disposed against the base 515 and the other of which is disposed against the cover plate 516, 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.

[0074] Specifically, the heat insulation component can be fixedly attached to the housing 51 or pressed and adhered to the housing 51.

[0075] In a specific embodiment, the insulation component can be made of polyethylene insulation material.

[0076] In one embodiment, the heat insulation component is only disposed in the air outlet cavity 518. Since the air outlet 511 of the air duct is located at the opening of the housing 51 near the storage compartment 3, compared to the air inlet duct, the air outlet duct is relatively located closer to the opening of the storage compartment 3, thus facilitating heat exchange with the air outside the housing 51. In contrast, the air inlet duct is located relatively far from the opening of the storage compartment 3, where the cooling capacity is relatively sufficient, and the temperature within the storage compartment 3 outside the housing 51 is relatively low. Therefore, the cooling capacity in the air inlet duct exchanges less heat with the air outside the housing 51. Thus, by only disposing of the heat insulation component in the air outlet cavity 518, the amount of material used for the heat insulation component can be reduced, saving costs.

[0077] See Figure 2 and Figure 6 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, and the storage compartment 3 are sequentially connected and form a circulating air path. Since the air outlet 511 of the air duct 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 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.

[0078] The air inlet 512 of the air duct is located at the end of the shell 51 away from the opening of the storage room 3.

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

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

[0081] Preferably, the return air component 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. The 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 liner 11 also includes a pair of second walls 112 disposed opposite to each other along the second direction, each first wall 111 being connected to a pair of second walls 112, and each second wall 112 being connected to a pair of first walls 111. The inner liner 11 also includes a third wall 113 disposed opposite to the opening of the storage compartment 3, the four sides of the third wall 113 being connected to a pair of first walls 111 and a pair of second walls 112 respectively, 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 each other along the first direction, and the air duct assembly 5 is connected to a pair of return air components 6 at both ends along the first direction, and 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.

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

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

[0087] 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.

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

[0089] Correspondingly, the air outlet 511 of the air duct assembly 5 is provided in two places. The two air outlets 511 are arranged opposite each other at both ends of the air duct assembly 5 along the second direction, so that the air outlets 511 and the return air outlets 61 correspond one-to-one, and respectively equalize the temperature of the storage chambers 3 on both sides of the air duct assembly 5.

[0090] In this 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.

[0091] In summary, the air duct assembly 5 and the refrigeration device 100 having it in this application can discharge the cold energy in the air duct from the air outlet 511 through the exhaust port 521 of the volute 52, thereby realizing the directional delivery of cold energy. Furthermore, by setting the relative positions of the air outlet 511, the fan 53 and the volute 52, the cold energy discharged from the exhaust port 521 of the volute 52 can be concentrated in the area opposite to the exhaust port 511 of the volute 52, thereby improving the uniformity of the distribution of the cold energy discharged from the exhaust port 511 to the outside of the housing 51 along the first direction.

[0092] 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), a volute (52), and a fan (53). The housing (51) has an air duct, and the air outlet (511) of the air duct is located on the housing (51). The volute (52) and the fan (53) are both located in the air duct. The fan (53) is located inside the volute (52). The volute (52) has an exhaust port (521) facing the air outlet (511). The air outlet (511) extends along a first direction and has a centerline L1 in the first direction. The exhaust port (521) has a centerline L2 in the first direction. L1 and the axis of the fan (53) are located on opposite 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) disposed opposite to the first end (5111) along the first direction. The housing (51) includes a first side (513) and a second side (514) disposed opposite to the first side (513) along the first direction. In the first direction, the axis of the fan (53) is located on the side of the second end (5112) facing the first side (513).

3. The air duct assembly (5) according to claim 2, characterized in that, The housing (51) includes a first side (513) and a second side (514) disposed opposite to the first side (513) along the first direction. The end of the fan (53) near the first side (513) is located on L2, or the end of the fan (53) near the first side (513) is located on the side of L2 facing the first side (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) disposed opposite to the first end (5111) along the first direction. The housing (51) includes a first side (513) and a second side (514) disposed opposite to the first side (513) along the first direction. The distance D1 from the first end (5111) to the first side (513) is less than the distance D2 from the second end (5112) to the second side (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 shell (51) has a dimension D along the first direction, 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 housing (51) includes a first side (513) and a second side (514) disposed opposite to the first side (513) along the first direction, wherein the distance D3 from the axis of the fan (53) to the first side (513) is greater than the 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) disposed opposite to the third end (523) along the first direction. The distance D5 from the axis of the fan (53) to the third end (523) is greater than the distance D6 from the axis of the fan (53) to the fourth end (524).

9. A duct assembly (5), characterized in that, The device includes a housing (51), a volute (52), and a fan (53). The housing (51) has an air duct, and the air outlet (511) of the air duct is located on the housing (51). The volute (52) and the fan (53) are both located in the air duct. The fan (53) is located inside the volute (52). The volute (52) has an exhaust port (521) facing the exhaust port (511). The exhaust port (511) extends along a first direction and includes a first end (5111) and a second end (5112) disposed opposite to the first end (5111) along the first direction. The housing (51) includes a first side (513) and a second side (5112) along the first direction. The second side (514) is disposed opposite to the first side (513) in the first direction. The distance D1 from the first end (5111) to the first side (513) is less than the distance D2 from the second end (5112) to the second side (514). The distance D3 from the axis of the fan (53) to the first side (513) is greater than the 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) disposed opposite to the third end (523) in the first direction. The distance D5 from the axis of the fan (53) to the third end (523) is greater than the distance D6 from the axis of the fan (53) to the fourth end (524).

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

Images