Refrigeration equipment

Abstract

The invention discloses refrigeration equipment which comprises an inner container and an evaporation pipe wound on the periphery of the inner container, a storage chamber is defined by the inner container, the refrigeration equipment further comprises an air return part and an air channel part, the air return part is connected with the inner container and exchanges heat with the inner container, and the air channel part is connected with the inner container. The air duct piece is arranged in the storage chamber and connected with the air return piece, the air return piece is exposed in the storage chamber, an air return duct is defined by the air return piece, an air supply duct is arranged in the air duct piece, and the air return duct, the air supply duct and the storage chamber are sequentially communicated. According to the refrigerator, the air return part is exposed in the storage chamber, the air return efficiency can be improved, then the air return part is connected with the inner container and exchanges heat with the inner container, and the cold energy generated by the evaporation pipe can be conveyed to the area, away from the inner container, in the storage chamber through the air return part and the air supply duct; therefore, the temperature uniformity in the storage chamber is improved.

Description

Technical Field

[0001] This application relates to the field of refrigeration technology, and in particular to a refrigeration device. Background Technology

[0002] Refrigeration equipment is used for the storage and preservation of vegetables, food, beverages and other items due to its refrigeration function, and is widely used in stores, supermarkets and homes.

[0003] Direct cooling is a common refrigeration method in refrigeration equipment. It involves wrapping evaporator tubes around the inner liner, allowing cold air to be transferred to the storage compartment through natural radiation. However, direct cooling can easily lead to uneven cold distribution within the storage compartment. Areas closer to the inner liner receive more cold air and are cooler, while areas farther from the inner liner, such as near the door, receive less cold air and are warmer. This is especially true for larger refrigeration units, where the opening of the storage compartment is also relatively large, particularly in areas farther from the inner liner. This results in even worse temperature uniformity within the storage compartment, with significant temperature differences between areas. Items stored in the middle areas or near the compartment opening are unlikely to achieve effective preservation. Summary of the Invention

[0004] The purpose of this application is to provide a refrigeration device to solve the problem of large temperature differences between different areas inside the storage room of existing refrigeration devices.

[0005] To achieve one of the above-mentioned objectives, one embodiment of this application provides a refrigeration device, including an inner liner and an evaporator tube wound around the outer periphery of the inner liner. The inner liner defines a storage compartment. The refrigeration device further includes a return air component and an air duct component. The return air component is connected to the inner liner and exchanges heat with the inner liner. The air duct component is disposed in the storage compartment and connected to the return air component. The return air component is exposed in the storage compartment. The return air component defines a return air duct. The air duct component has a supply air duct. The return air duct, the supply air duct, and the storage compartment are sequentially connected.

[0006] As a further improvement of one embodiment of this application, the return air component is filled with a first refrigerant.

[0007] As a further improvement of one embodiment of this application, the evaporator tube is filled with a second refrigerant, and the evaporation temperature of the first refrigerant is lower than the evaporation temperature of the second refrigerant.

[0008] As a further improvement of one embodiment of this application, the return air component includes a substrate and a refrigerant pipe, wherein the first refrigerant is filled in the refrigerant pipe and the refrigerant pipe is integrally formed on the substrate.

[0009] As a further improvement of one embodiment of this application, the refrigerant tube at least partially protrudes from the inner surface of the substrate and forms a protrusion on the inner surface of the substrate.

[0010] As a further improvement of one embodiment of this application, the refrigeration device further includes a magnetic attraction structure for fixing the return air component to the inner liner.

[0011] As a further improvement of one embodiment of this application, the magnetic structure includes a magnet located in the return air duct, the magnet being attracted to the inner liner.

[0012] As a further improvement of one embodiment of this application, the refrigeration equipment further includes a snap-fit ​​structure for fixing the air duct component and the return air component.

[0013] As a further improvement of one embodiment of this application, the buckle structure includes a first buckle assembly, the first buckle assembly includes a hook and a slot, one of the hook and the slot is disposed in the air duct component, and the other is disposed in the return air component, the hook being inserted into the slot.

[0014] As a further improvement of one embodiment of this application, the buckle structure further includes a second buckle assembly, wherein the first buckle assembly and the second buckle assembly are respectively disposed at both ends of the return air component along a first direction, the first direction being the opening direction of the storage compartment.

[0015] As a further improvement of one embodiment of this application, the air duct component includes a mating portion protruding toward the return air component, and the mating portion includes a first mating plate and a second mating plate disposed opposite to each other along the first direction.

[0016] One of the hook and the slot is provided on the first mating plate, and the other is provided on the return air component. The second buckle assembly includes a protrusion and a limiting groove. One of the protrusion and the limiting groove is provided on the second mating plate, and the other is provided on the return air component. The protrusion is engaged in the limiting groove.

[0017] As a further improvement of one embodiment of this application, the air duct component includes a mating part, the mating part is cylindrical, the return air component is inserted into the mating part, and the second snap-fit ​​assembly includes a limiting part disposed on the return air component, the limiting part being located outside the mating part and abutting against the mating part.

[0018] As a further improvement of one embodiment of this application, the mating part includes a first mating plate, a second mating plate and a connecting plate. The first mating plate and the second mating plate are disposed opposite to each other along the first direction. The connecting plate connects the first mating plate and the second mating plate. The connecting plate is located between the return air component and the inner liner and is abutting against the inner liner.

[0019] One of the hook and the slot is located on the first mating plate, and the other is located on the return air component. The limiting part is located outside the mating part and abuts against the second mating plate.

[0020] Compared with the prior art, the refrigeration equipment of this application has the following beneficial effects: the return air component is exposed in the storage compartment, which can improve the return air efficiency. Then, the return air component is connected to the inner liner and exchanges heat with the inner liner. The cold energy generated by the evaporator can be introduced into the return air duct through the return air component, and then transported to the area of ​​the storage compartment away from the inner liner through the air supply duct in the air duct component, thereby improving the temperature uniformity in the storage compartment. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of a refrigeration device according to an embodiment of this application;

[0022] 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;

[0023] Figure 3 yes Figure 1 Top view;

[0024] Figure 4 yes Figure 3 A sectional view along line AA.

[0025] Figure 5 yes Figure 4 Enlarged diagram of section C;

[0026] Figure 6 yes Figure 4 Enlarged schematic diagram of section D in the middle;

[0027] Figure 7 yes Figure 3 Sectional view along line BB;

[0028] Figure 8 yes Figure 7 Enlarged schematic diagram of section E in the middle;

[0029] Figure 9 This is a front view of a refrigeration device according to an embodiment of this application;

[0030] Figure 10 yes Figure 9 Sectional view along the FF line;

[0031] Figure 11 yes Figure 10 Enlarged schematic diagram of section G in the middle;

[0032] Figure 12 This is a schematic diagram of the assembly structure of the air duct component and the return air component in Embodiment 1 of this application;

[0033] Figure 13 yes Figure 12 Enlarged schematic diagram of section H in the middle;

[0034] Figure 14 yes Figure 12 Partial structural explosion diagram;

[0035] Figure 15 yes Figure 14 Enlarged schematic diagram of section I;

[0036] Figure 16 This is a partial exploded view of the air duct and return air components of Embodiment 2 of this application;

[0037] Figure 17 yes Figure 16 Enlarged schematic diagram of section J in the middle;

[0038] Figure 18 This is an assembly diagram of the air duct component and return air component from another angle in Embodiment 2 of this application;

[0039] Figure 19 yes Figure 18 Enlarged schematic diagram of section K in the middle.

[0040] Explanation of reference numerals in the attached figures:

[0041] 100. Refrigeration equipment; 1. Cabinet; 11. Inner liner; 12. Shell; 2. Door; 3. Storage compartment; 4. Evaporator pipe; 5. Air duct component; 51. Shell; 511. Air supply duct; 5111. Air outlet; 52. Connecting part; 521. First connecting plate; 522. Second connecting plate; 523. Connecting plate; 6. Return air component; 61. Return air duct; 611. Return air outlet; 62. Base plate; 621. First plate; 622. Second plate; 623. Third plate; 624. Fourth plate; 63. Refrigerant pipe; 64. Magnetic structure; 651. Hook; 652. Slot; 653. Protrusion; 654. Limiting slot; 655. Limiting part; 66. Air outlet; 67. Sub-return air component. Detailed Implementation

[0042] The present application will now be described in detail with reference to the specific embodiments shown in the accompanying drawings.

[0043] In the various diagrams of the present application, for the convenience of illustration, certain dimensions of 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.

[0044] It should be understood that although the terms "first", "second", "third", etc. may be used herein to describe various elements, structures or parameters, the objects so described should not be limited by these terms. These terms are only used to distinguish these described objects from each other.

[0045] See 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. A storage compartment 3 is provided 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.

[0046] The refrigeration device 100 in this embodiment is a direct-cooling refrigeration device, that is, it uses the direct-cooling method to supply cold to the items stored in the storage compartment 3. The refrigeration device 100 can be specifically set as a refrigerator, a freezer, a wine cabinet, etc., especially a refrigeration device with a large volume. In this embodiment, the refrigeration device 100 is taken as a horizontal freezer as an example for description.

[0047] Specifically, the refrigeration unit includes a compressor, a condenser, a throttling device and an evaporator connected in sequence.

[0048] Combined with 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 the storage compartment 3. The evaporator includes an evaporation pipe 4 wound around the outer periphery of the inner liner 11. The evaporation pipe 4 transfers the cold quantity to the inside of the storage compartment 3 through the inner liner 11 by natural radiation, so as to refrigerate the items stored in the storage compartment 3.

[0049] In this natural radiation refrigeration method where the evaporation pipe 4 is wound around the outer periphery of the inner liner 11, the cold quantity is transferred from the inner liner 11 to the middle area of the storage compartment 3. However, the space in the storage compartment 3 is usually large, which will cause a large temperature difference in each area of the storage compartment 3. Especially, the temperature in the middle area far from the inner liner 11 is relatively high, and the temperature uniformity in the storage compartment 3 is poor. Moreover, the storage compartment 3 has an opening. Especially when the door body 2 is opened, a large amount of cold quantity at the opening of the storage compartment 3 is dissipated outward, which will cause the temperature in the area near the opening of the storage compartment 3 to be significantly higher than the area near the inner liner 11, further exacerbating the temperature non-uniformity in the storage compartment 3.

[0050] See Figures 2 to 12The refrigeration equipment 100 further includes an air duct component 5 and a return air component 6. The return air component 6 is connected to the inner liner 11 and exchanges heat with the inner liner 11. The air duct component 5 is disposed in the storage compartment 3 and connected to the return air component 6. The return air component 6 is exposed in the storage compartment 3. The return air component 6 defines a return air duct 61. The air duct component 5 has a supply air duct 511. The return air duct 61, the supply air duct 511 and the storage compartment 3 are sequentially connected.

[0051] In this way, the return air component 6 is exposed in the storage compartment 3, which can improve the return air efficiency. Furthermore, the return air component 6 is connected to the inner liner 11 and exchanges heat with the inner liner 11. The cold energy generated by the evaporator pipe 4 can be introduced into the return air duct 61 through the return air component 6, and then transported to the area of ​​the storage compartment 3 away from the inner liner 11 through the air supply duct 511 in the air duct component 5, thereby improving the temperature uniformity in the storage compartment 3.

[0052] Furthermore, the return air component 6 is filled with a first refrigerant. Thus, the return air component 6 is connected to the inner liner 11 and exchanges heat with the inner liner 11. The first refrigerant in the return air component 6 can absorb the cold energy generated by the evaporator 4 through the return air component 6. This allows the air in the return air duct 61 to absorb not only the cold energy from the inner liner 11, but also the cold energy released by the evaporation of the first refrigerant in the return air component 6. This further reduces the air temperature in the return air duct 61, thereby reducing the outlet air temperature of the air supply duct 511 and further improving the temperature uniformity in the storage compartment 3.

[0053] See Figure 12 The return air component 6 has a return air inlet 611, which connects the return air duct 61 and the storage room 3. That is, the storage room 3 is connected to the return air duct 61 through the return air inlet 611.

[0054] Preferably, there are two return air inlets 611, which are located on opposite sides of the air duct 5. Since the storage room 3 is divided into two spaces by the air duct 5, the two return air inlets 611 are connected to the two spaces respectively, thereby improving the temperature uniformity of the two spaces.

[0055] See Figure 6The air duct component 5 includes a housing 51, and the air supply duct 511 is located inside the housing 51. The air outlet 5111 of the air supply duct 511 is located at the opening of the housing 51 near the storage compartment 3, so that the cold energy in the return air duct 61 can be transferred to the area near the opening in the storage compartment 3 through the air supply duct 511, and the cold energy can flow from the area near the opening in the storage compartment 3 to the return air component 6, thereby improving the uniformity of the cold energy distribution in the storage compartment.

[0056] The air duct component 5 also includes a fan installed in the air supply duct 511, which transports cold air in the air supply duct 511 from the air outlet 5111 to the storage compartment 3, thereby achieving directional delivery of cold energy to reduce the temperature in the middle area of ​​the storage compartment 3 near the door 2 and away from the inner liner 11.

[0057] The evaporator tube 4 is filled with a second refrigerant. The evaporation temperature of the first refrigerant is lower than that of the second refrigerant, which allows the first refrigerant in the return air component 6 to store more cold energy, thereby further reducing the temperature of the air in the return air duct 61.

[0058] Combination Figures 7 to 11 The return air component 6 includes a base plate 62 and a refrigerant pipe 63. The first refrigerant is filled into the refrigerant pipe 63, which is integrally formed onto the base plate 62. This allows the first refrigerant to be as close as possible to the inner liner 11, thereby storing more cooling capacity. The integral forming of the refrigerant pipe 63 onto the base plate 62 avoids the need for assembly between the refrigerant pipe 63 and the base plate 62, resulting in high connection strength and saving labor.

[0059] The refrigerant tube 63 can be formed by blowing, but it is not limited to this method. Other preparation methods that can integrally form the tube on the substrate 62 can also be applied here.

[0060] The refrigerant pipe 63 at least partially protrudes from the inner surface of the substrate 62 and forms a protrusion on the inner surface of the substrate 62. The inner surface of the substrate 62 is the surface of the substrate 62 facing the return air duct 61. That is, the protrusion is located in the return air duct 61. This can form a concave-convex structure on the inner surface of the substrate 62, thereby increasing the contact area and heat exchange area between the air in the return air duct 61 and the return air component 6, so that the air in the return air duct 61 and the return air component 6 can exchange heat fully, further reducing the outlet air temperature of the air supply duct 511, and further improving the temperature uniformity in the storage chamber 3.

[0061] The refrigerant tube 63 is S-shaped, that is, the refrigerant tube 63 extends along the S-shape on the inner surface of the substrate 62, thereby increasing the length of the refrigerant tube 63 to charge more of the first refrigerant and thus store more cold energy.

[0062] For ease of description, in this embodiment, the opening direction of the storage room 3 is defined as the first direction.

[0063] See Figures 11 to 18 In this embodiment, the return air component 6 is cylindrical and includes a first plate 621, a second plate 622, a third plate 623, and a fourth plate 624 connected in sequence. Specifically, the base plate 62 includes a first plate 621, a second plate 622, a third plate 623, and a fourth plate 624 connected in sequence. The first plate 621, the second plate 622, the third plate 623, and the fourth plate 624 together enclose the return air duct 61. The first plate 621 is attached to the inner liner 11. The first plate 621 and the third plate 623 are arranged opposite each other along a second direction perpendicular to the first direction. The third plate 623 is connected to the air duct component 5. The second plate 622 and the fourth plate 624 are arranged opposite each other along the first direction, and the fourth plate 624 is located on the side of the second plate 622 facing the opening of the storage room 3.

[0064] Preferably, the refrigerant pipes 63 are evenly distributed on the first plate 621, the second plate 622, the third plate 623, and the fourth plate 624. On the one hand, this can greatly increase the length of the refrigerant pipes 63 to charge more of the first refrigerant, thereby storing more cooling capacity. On the other hand, it can increase the heat exchange area of ​​the return air component 6, thereby greatly improving the heat exchange efficiency and heat exchange between the air in the return air duct 61 and the return air component 6, further reducing the outlet air temperature of the air supply duct 511, and further improving the temperature uniformity in the storage room 3.

[0065] See Figure 11 The refrigeration device 100 also includes a magnetic suction structure 64 for fixing the return air component 6 to the inner liner 11. The magnetic suction structure 64 eliminates the need for screws on the return air component 6 and the inner liner 11, and provides greater installation flexibility.

[0066] In one specific embodiment, the magnetic attraction structure 64 includes a magnet located in the return air duct 61, which is attracted to the inner liner 11, thereby attracting and fixing the return air component 6 to the inner liner 11.

[0067] Preferably, multiple magnets can be provided and arranged at different positions in the return air duct 61, thereby improving the stability of the return air component 6 installed in the inner liner 11.

[0068] The refrigeration equipment 100 also includes a snap-fit ​​structure for fixing the air duct component 5 and the return air component 6. The snap-fit ​​structure can be used to install and fix the air duct component 5 and the return air component 6 to connect the return air duct 61 and the supply air duct 511, and facilitates installation and disassembly.

[0069] See Figures 12 to 15 The snap-fit ​​structure includes a first snap-fit ​​assembly, which includes a hook 651 and a slot 652. One of the hook 651 and the slot 652 is located on the air duct component 5, and the other is located on the return air component 6. The hook 651 is inserted into the slot 652. Through the cooperation of the hook 651 and the slot 652, the air duct component 5 and the return air component 6 can be connected, which not only has high connection strength but also simple structure.

[0070] Furthermore, the snap-fit ​​structure also includes a second snap-fit ​​assembly. The first snap-fit ​​assembly and the second snap-fit ​​assembly are respectively disposed at both ends of the return air component 6 along the first direction, thereby further improving the stability of the connection between the air duct component 5 and the return air component 6.

[0071] The air duct component 5 includes a mating part 52, which is mated with the return air component 6 to realize the assembly of the air duct component 5 and the return air component 6.

[0072] See Figure 15 In one embodiment, the mating portion 52 protrudes toward the return air member 6, and the mating portion 52 includes a first mating plate 521 and a second mating plate 522 disposed opposite to each other along the first direction.

[0073] Combination Figures 12 to 15 One of the hook 651 and the slot 652 is located on the first mating plate 521, and the other is located on the return air component 6. The second snap-fit ​​assembly includes a protrusion 653 and a limiting groove 654. One of the protrusion 653 and the limiting groove 654 is located on the second mating plate 522, and the other is located on the return air component 6. The protrusion 653 is snapped into the limiting groove 654. Through the cooperation structure of the protrusion 653 and the limiting groove 654, the air duct component 5 and the return air component 6 have high connection strength, and the structure is simple, making it easy to disassemble and replace.

[0074] In one specific embodiment, the first mating plate 521 is located on the side of the second mating plate 522 facing the opening of the storage compartment 3; the return air component 6 is located between the first mating plate 521 and the second mating plate 522; the hook 651 is provided on the return air component 6, preferably on the fourth plate 624 and located on the side of the fourth plate 624 opposite to the second plate 622; the slot 652 is provided on the first mating plate 521; the protrusion 653 is provided on the second mating plate 522 and located on the side of the second mating plate 522 facing the first mating plate 521; and the limiting groove 654 is provided on the second plate 622. This not only improves the connection strength between the air duct component 5 and the return air component 6, but also restricts the relative movement of the air duct component 5 and the return air component 6 along the first direction by the first mating plate 521 and the second mating plate 522.

[0075] Of course, in other embodiments, the positions of the hook 651 and the slot 652 can be interchanged; of course, the positions of the protrusion 653 and the limiting groove 654 can also be interchanged.

[0076] Preferably, at least two snap-fit ​​components are provided, and the at least two snap-fit ​​components are spaced apart, thereby improving the mating strength between the air duct component 5 and the return air component 6.

[0077] See Figure 8 Furthermore, the return air component 6 has an air outlet 66 at its connection point with the air duct component 5, and the air outlet 66 connects the return air duct 61 and the supply air duct 511. Specifically, the air outlet 66 is located on the third plate 623 and at the connection point between the third plate 623 and the mating part 52.

[0078] The return air component 6 extends along a third direction, and the return air duct 61 also extends along the third direction, which is perpendicular to the first and second directions. The two return air inlets 611 of the return air component 6 are located at opposite ends of the return air component 6 along the third direction. This design saves materials, simplifies the installation process, and reduces costs while ensuring uniform temperature.

[0079] See Figures 12 to 15In one specific embodiment, the return air component 6 includes two interconnected sub-return air components 67, which are arranged along the third direction. Each sub-return air component 67 is provided with at least one of the snap-fit ​​components. The two sub-return air components 67 are connected at the air outlet 66, and two return air outlets 611 are respectively located at the ends of the two sub-return air components 67 away from each other. Each of the two sub-return air ducts 61 has a sub-air duct, and the two sub-air ducts together form the return air duct 61. This facilitates the assembly of the return air component 6 with the air duct component 5.

[0080] See Figure 12 and Figure 14 Two return air components 6 are provided, and the two return air components 6 are arranged opposite each other along the second direction. The two ends of the air duct component 5 along the second direction are respectively connected to the two return air components 6. In this way, the cooling capacity in the air supply duct 511 can be further increased, and the temperature uniformity in the storage room 3 can be further improved.

[0081] Example 2

[0082] The only difference between this embodiment and Embodiment 1 is the structure of the mating part 52 and the second snap-fit ​​assembly, as detailed below:

[0083] See Figures 16 to 19 The mating portion 52 is cylindrical, and the return air component 6 is inserted into the mating portion 52. The second snap-fit ​​assembly includes a limiting portion 655 disposed on the return air component 6. The limiting portion 655 is located outside the mating portion 52 and abuts against the mating portion 52. Thus, the return air component 6 is inserted into the mating portion 52, which can restrict the relative movement of the duct component 5 and the return air component 6 along the first direction and the second direction.

[0084] Specifically, in addition to the aforementioned first mating plate 521 and second mating plate 522, the mating part 52 also includes a connecting plate 523. The connecting plate 523 connects the first mating plate 521 and the second mating plate 522, and is located between the return air component 6 and the inner liner 11 and abuts against the inner liner 11. In this way, the connecting plate 523 restricts the relative movement of the air duct component 5 and the return air component 6 along the first direction, further improving the connection strength between the air duct component 5 and the return air component 6.

[0085] The limiting part 655 is located outside the mating part 52 and abuts against the second mating plate 522.

[0086] Specifically, the limiting part 655 is provided on the second plate 622 and located on the side of the second plate 622 opposite to the fourth plate 624. In this way, the return air component 6 can be installed in place.

[0087] This embodiment is no different from Embodiment 1 except for the differences mentioned above, and will not be repeated here.

[0088] In summary, the refrigeration equipment 100 of this application has the following technical effects:

[0089] The return air component 6 is exposed in the storage compartment 3, which can improve the return air efficiency. The return air component 6 is connected to the inner liner 11 and exchanges heat with the inner liner 11. The cold energy generated by the evaporator tube 4 can be introduced into the return air duct 61 through the return air component 6, and then transported to the area of ​​the storage compartment 3 away from the inner liner 11 through the air supply duct 511 in the air duct component 5, thereby improving the temperature uniformity in the storage compartment 3.

[0090] 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 refrigeration device (100) comprising an inner liner (11) and an evaporator (4) wound around the outer periphery of the inner liner (11), the inner liner (11) defining a storage compartment (3), characterized in that, The refrigeration equipment (100) further includes a return air component (6) and an air duct component (5). The return air component (6) is connected to the inner liner (11) and exchanges heat with the inner liner (11). The air duct component (5) is located in the storage compartment (3) and connected to the return air component (6). The return air component (6) is exposed in the storage compartment (3). The return air component (6) defines a return air duct (61). The air duct component (5) has an air supply duct (511). The return air duct (61), the air supply duct (511), and the storage compartment (3) are sequentially connected.

2. The refrigeration equipment (100) according to claim 1, characterized in that, The return air component (6) is filled with a first refrigerant.

3. The refrigeration equipment (100) according to claim 2, characterized in that, The evaporator tube (4) is filled with a second refrigerant, and the evaporation temperature of the first refrigerant is lower than that of the second refrigerant.

4. The refrigeration equipment (100) according to claim 1, characterized in that, The return air component (6) includes a substrate (62) and a refrigerant pipe (63), wherein the first refrigerant is filled into the refrigerant pipe (63), and the refrigerant pipe (63) is integrally formed on the substrate (62).

5. The refrigeration equipment (100) according to claim 4, characterized in that, The refrigerant tube (63) protrudes at least partially from the inner surface of the substrate (62) and forms a protrusion on the inner surface of the substrate (62).

6. The refrigeration equipment (100) according to claim 1, characterized in that, It also includes a magnetic attraction structure (64) for fixing the return air component (6) to the inner liner (11).

7. The refrigeration equipment (100) according to claim 6, characterized in that, The magnetic structure (64) includes a magnet located in the return air duct (61) and the magnet is attracted to the inner liner (11).

8. The refrigeration equipment (100) according to claim 1, characterized in that, It also includes a snap-fit ​​structure for fixing the air duct component (5) to the return air component (6).

9. The refrigeration equipment (100) according to claim 8, characterized in that, The buckle structure includes a first buckle assembly, which includes a hook (651) and a slot (652). One of the hook (651) and the slot (652) is located in the air duct component (5), and the other is located in the return air component (6). The hook (651) is inserted into the slot (652).

10. The refrigeration equipment (100) according to claim 9, characterized in that, The buckle structure also includes a second buckle assembly. The first buckle assembly and the second buckle assembly are respectively located at both ends of the return air component (6) along a first direction, which is the opening direction of the storage room (3).

11. The refrigeration equipment (100) according to claim 10, characterized in that, The air duct component (5) includes a mating portion (52) protruding toward the return air component (6), and the mating portion (52) includes a first mating plate (521) and a second mating plate (522) disposed opposite to each other along the first direction. One of the hook (651) and the slot (652) is provided on the first mating plate (521), and the other is provided on the return air component (6). The second buckle assembly includes a protrusion (653) and a limiting groove (654). One of the protrusion (653) and the limiting groove (654) is provided on the second mating plate (522), and the other is provided on the return air component (6). The protrusion (653) is engaged in the limiting groove (654).

12. The refrigeration equipment (100) according to claim 10, characterized in that, The air duct component (5) includes a connecting part (52), which is cylindrical. The return air component (6) is inserted into the connecting part (52). The second snap-fit ​​assembly includes a limiting part (655) disposed on the return air component (6). The limiting part (655) is located outside the connecting part (52) and abuts against the connecting part (52).

13. The refrigeration equipment (100) according to claim 12, characterized in that, The mating part (52) includes a first mating plate (521), a second mating plate (522), and a connecting plate (523). The first mating plate (521) and the second mating plate (522) are arranged opposite to each other along the first direction. The connecting plate (523) connects the first mating plate (521) and the second mating plate (522). The connecting plate (523) is located between the return air component (6) and the inner liner (11) and is attached to the inner liner (11). One of the hook (651) and the slot (652) is provided on the first mating plate (521), and the other is provided on the return air component (6). The limiting part (655) is located outside the mating part (52) and abuts against the second mating plate (522).

Images