Refrigerating device and refrigerator

Abstract

The utility model relates to the field of refrigerators, and discloses a refrigerating device and a refrigerator. The refrigerating device comprises a shell, an evaporator and an air return pipe. A containing cavity is formed in the shell. The evaporator is arranged in the accommodating cavity; a fixing part is formed on the air return pipe, extends into the containing cavity and is connected with the evaporator in a limiting mode. According to the refrigerating device, the fixing part is integrated on the air return pipe, when the air return pipe is assembled, the fixing part can stretch into the containing cavity of the shell so that the evaporator can be assembled conveniently, the additional procedure of independent assembling of the fixing part is avoided, and the assembling process of the evaporator is simpler and faster.

Description

Technical Field

[0001] The utility model relates to the field of refrigerators, in particular to a refrigeration device and a refrigerator. Background Art

[0002] The evaporator is an indispensable structure of refrigerators and other refrigeration equipment. The stability of the evaporator after assembly will affect the use of refrigerators and other refrigeration equipment. In the prior art, the evaporator is usually fixed by an additional independent fixing card, but this method requires the fixing card to be assembled to the preset position of the refrigeration equipment before the evaporator is assembled, which will generate additional processes, cumbersome operation and inconvenient assembly. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a refrigeration device. According to the refrigeration device of the utility model, a fixing part is integrated on the return air duct. When the return air duct is assembled, the fixing part can be extended into the accommodating cavity of the shell to facilitate the assembly of the evaporator, avoiding the additional process of independent assembly of the fixing part, making the assembly process of the evaporator simpler and faster.

[0004] The utility model also provides a refrigerator comprising the refrigeration device.

[0005] According to the utility model, the refrigeration device includes a shell, an evaporator and a return air duct, wherein a accommodating cavity is formed in the shell; the evaporator is arranged in the accommodating cavity; a fixing portion is formed on the return air duct, and the fixing portion extends into the accommodating cavity and is limitedly connected to the evaporator.

[0006] The fixing part on the return air duct directly extends into the accommodating chamber and is limitedly connected with the evaporator. Compared with the method of fixing the evaporator with an additional independent fixing card structure in the prior art, the design of the utility model can hide the fixing part in the accommodating chamber, and there is no need to additionally design the installation position of the fixing part, so that the structure of the refrigeration device is more compact and reduces unnecessary parts and space occupation. When assembling the return air duct, the fixing part can be extended into the accommodating chamber. At this time, the evaporator in the accommodating chamber can be directly matched with the fixing part. Since the return air duct structure is a necessary structure of the refrigeration equipment, its function is to realize the cold air circulation of the refrigeration device. Therefore, the fixing part is formed on the return air duct. During assembly, there is no need to perform the additional step of assembling the fixing part. The evaporator can be directly assembled after the return air duct is assembled. The process of assembling the evaporator can be reduced, and complicated installation steps and tools are omitted, making the installation and fixation of the evaporator simple and quick, reducing the installation cost and time.

[0007] According to an embodiment of the utility model, a mounting hole connecting the accommodating cavity with the outside is formed on the side wall of the shell, the free end of the fixing portion passes through the mounting hole and extends into the accommodating cavity, and the fixing portion abuts against the inner wall of the mounting hole.

[0008] According to an embodiment of the utility model, a slot is formed on the fixing portion, and an evaporator tube is provided on the evaporator. The evaporator tube can be selectively received in the slot and limitedly matched with the slot.

[0009] According to an embodiment of the utility model, the fixing portion includes a first plate and a second plate, the first plate and the second plate are spaced apart from each other and define a limiting groove, and the limiting groove is suitable for accommodating the evaporator tube of the evaporator.

[0010] According to an embodiment of the present invention, the free end of the first plate and the free end of the second plate are respectively formed with guiding inclined surfaces inclined away from each other in a direction away from the return air duct.

[0011] According to an embodiment of the present invention, the limiting grooves are configured to be a plurality of grooves that are spaced apart and have different sizes in the extending direction of the first plate and the second plate.

[0012] According to an embodiment of the present utility model, the fixing portion is configured as a plurality of fixing portions which are spaced apart on the return air duct.

[0013] According to one embodiment of the utility model, the return air duct includes a front cover and a rear cover, the front cover is arranged on the side wall of the shell, the front cover is provided with the fixing part on the side facing the shell, and a plurality of the fixing parts are respectively integrally formed with the front cover; the rear cover is buckled with the front cover.

[0014] The refrigerator according to the utility model is briefly described below.

[0015] The refrigerator according to the utility model includes the refrigeration device in the above embodiment. Since the refrigerator according to the utility model is provided with the refrigeration device in the above embodiment, after the refrigerator is equipped with the refrigeration device, due to the design of the fixing part, the installation and removal of the evaporator become simpler and faster, thereby improving the convenience of maintenance of the refrigerator. The fixed part and the evaporator are limitedly connected to reduce the displacement or vibration that may occur in the evaporator during operation, thereby ensuring the stability and reliability of the refrigerator's refrigeration effect. In addition, the arrangement relationship between the fixed part and the return air duct realizes the compactness of the refrigeration device structure, which helps to save space inside the refrigerator.

[0016] In summary, the refrigeration device integrates a fixing part on the front cover of the return air duct, and sets a mounting hole on the side wall of the shell. When the return air duct is assembled, the fixing part can extend into the accommodating cavity after passing through the mounting opening. At this time, the evaporator tube on the evaporator can be directly assembled with the fixing part, making the assembly of the evaporator more convenient and quick. The first plate and the second plate are arranged at intervals on the fixing part to form a limit groove, which is used to clamp the evaporator tube. The surfaces of the first plate and the second plate facing each other are formed with arc grooves that are recessed away from each other. The arc groove can make the limit groove fit the outer surface of the evaporator tube, thereby improving the stability of the fixing part fixing the evaporator. A plurality of arc grooves are arranged at intervals in the extension direction of the first plate and the second plate, so that the fixing part can adapt to evaporator tubes of different sizes, thereby improving the versatility of the fixing part. The free ends of the first plate and the second plate are respectively formed with guiding inclined surfaces that are away from each other, thereby making the process of the evaporator tube being clamped into the limit groove more convenient. By designing the fixing part, the refrigeration device does not need to use additional assembly tools, simplifies the assembly process of the evaporator, and improves the assembly efficiency of the evaporator and the stability of the evaporator after assembly.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a front view of a refrigeration device according to an embodiment of the utility model;

[0020] Figure 2 is a schematic diagram of a refrigeration device according to an embodiment of the utility model;

[0021] Figure 3 is a structural diagram of a refrigeration device according to an embodiment of the utility model;

[0022] Figure 4 It is a schematic diagram of the structure of the fixing part and the front cover according to one embodiment of the utility model;

[0023] Figure 5 is based on Figure 5 The middle circle shows a partial enlarged view of A;

[0024] Figure 6 It is a schematic diagram of the cooperation between the evaporator tube and the fixing part according to an embodiment of the utility model.

[0025] Reference numerals:

[0026] Refrigeration device 1;

[0027] Shell 11, accommodating cavity 111, mounting hole 112;

[0028] Evaporator 12, evaporator tube 121;

[0029] Return air duct 13, front cover 131, rear cover 132;

[0030] The fixing portion 14 , the first plate 141 , the second plate 142 , the limiting groove 143 , the guiding inclined surface 144 , and the arc groove 145 . DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] The evaporator is an indispensable structure of refrigerators and other refrigeration equipment. The stability of the evaporator after assembly will affect the use of refrigerators and other refrigeration equipment. In the prior art, the evaporator is usually fixed by an additional independent fixing card, but this method requires the fixing card to be assembled to the preset position of the refrigeration equipment before the evaporator is assembled, which will generate additional processes, cumbersome operation and inconvenient assembly.

[0033] Reference below Figure 1-Figure 6 A refrigeration device according to an embodiment of the utility model is described.

[0034] According to the utility model, the refrigeration device 1 includes a shell 11, an evaporator 12 and a return air duct 13. The shell 11 is formed with a accommodating cavity 111; the evaporator 12 is arranged in the accommodating cavity 111; a fixing portion 14 is formed on the return air duct 13, and the fixing portion 14 extends into the accommodating cavity 111 and is limitedly connected to the evaporator 12.

[0035] According to the refrigeration device 1 of the utility model, a return air duct 13 can be provided on the side wall of the shell 11, and a fixing portion 14 is formed on the return air duct 13. It can be understood that the fixing portion 14 and the return air duct 13 are integrally formed. During assembly, the return air duct 13 is assembled to the side wall of the shell 11. At this time, the fixing portion 14 can extend into the accommodating cavity 111 of the shell 11, and the evaporator 12 can directly cooperate with the partial limit position of the fixing portion 14 located in the accommodating cavity 111 to achieve the fixation of the evaporator 12.

[0036] The fixing part 14 on the return air duct 13 directly extends into the accommodating chamber 111 and is limitedly connected with the evaporator 12. Compared with the method of additionally independently setting a fixing card structure to fix the evaporator 12 in the prior art, this design of the utility model can hide the fixing part 14 in the accommodating chamber 111, without the need to additionally design the installation position of the fixing part 14, making the structure of the refrigeration device 1 more compact, reducing unnecessary components and space occupation. At the same time, the limited connection method ensures the stability of the evaporator 12 in the accommodating chamber 111, reduces vibration and noise, and improves the operating stability of the entire refrigeration device 1.

[0037] When assembling the return air duct 13, the fixing portion 14 can extend into the accommodating cavity 111. At this time, the evaporator 12 in the accommodating cavity 111 can be directly limited and matched with the fixing portion 14. Since the return air duct 13 structure is a necessary structure of the refrigeration equipment, its function is to realize the cold air circulation of the refrigeration device 1. Therefore, the fixing portion 14 is formed on the return air duct 13. During assembly, there is no need to perform the additional step of assembling the fixing portion 14. The evaporator 12 can be directly assembled after the return air duct 13 is assembled. The process of assembling the evaporator 12 can be reduced, and complicated installation steps and tools are omitted, so that the installation and fixation of the evaporator 12 becomes simple and quick, and the installation cost and time are reduced.

[0038] In addition, if the evaporator 12 needs to be repaired or replaced, the evaporator 12 can be directly removed without disassembling the entire refrigeration device 1 or the fixing portion 14, thereby improving the convenience and efficiency of maintenance.

[0039] According to one embodiment of the utility model, a mounting hole 112 is formed on the side wall of the shell 11 to connect the accommodating cavity 111 with the outside, the free end of the fixing portion 14 passes through the mounting hole 112 and extends into the accommodating cavity 111, and the fixing portion 14 abuts against the inner wall of the mounting hole 112.

[0040] Specifically, the refrigeration device 1 is provided with a mounting hole 112 on the side wall of the shell 11. During assembly, the return air duct 13 is connected to the side wall of the shell 11, and the fixing portion 14 on the return air duct 13 can pass through the mounting hole 112 and extend into the accommodating cavity 111 to fix the evaporator 12. The provision of the mounting hole 112 simplifies the assembly process of the refrigeration device 1 and makes the assembly of the fixing portion 14 more convenient and quick.

[0041] When the return air duct 13 is assembled with the side wall of the shell 11, at least part of the fixing portion 14 passes through the mounting hole 112. At this time, the fixing portion 14 abuts against the inner wall of the mounting hole 112. Such close contact ensures the stability of the fixing portion 14 in the accommodating cavity 111, reduces vibration and displacement, and thus enhances the structural stability of the entire refrigeration device 1.

[0042] In addition, by adjusting the size and position of the mounting hole 112 , the fixing portion 14 of different sizes and shapes can be adapted, so that the refrigeration device 1 has stronger adaptability and flexibility.

[0043] According to an embodiment of the present invention, a slot is formed on the fixing portion 14 , and an evaporator tube 121 is provided on the evaporator 12 . The evaporator tube 121 can be selectively received in the slot and limitedly matched with the slot.

[0044] Since the fixing part 14 is a structure for fixing the evaporator 12, the structure of the fixing part 14 will affect the assembly of the evaporator 12. Specifically, the refrigeration device 1 is provided with a slot on the fixing part 14, and the evaporator 12 is provided with an evaporator tube 121 that can be adapted to the slot. When the fixing part 14 is assembled, the evaporator 12 can be fixed by the limiting cooperation between the evaporator tube 121 and the slot, and the setting of the slot ensures the stable connection of the evaporator tube 121 on the evaporator 12. The limiting cooperation between the evaporator tube 121 and the slot can effectively prevent the evaporator tube 121 from moving or vibrating during operation, thereby improving the operation stability and reliability of the refrigeration device 1. At the same time, through the limiting cooperation between the evaporator tube 121 and the slot, the installation and removal process of the evaporator 12 can be made simple and quick, reducing the difficulty of installation and removal and improving work efficiency.

[0045] In addition, the design of the card slot can adapt to evaporator tubes 121 of different sizes and shapes, increasing the flexibility and adaptability of the refrigeration device 1, so that the refrigeration device 1 can be applied to more application scenarios and requirements. For example, the fixing portion 14 can be made of a material with a certain elasticity, and the fixing portion 14 processed in this way has a certain deformation ability. When the card slot is matched with the evaporator tube 121, the card slot can be deformed to adapt to evaporator tubes 121 of different sizes.

[0046] According to an embodiment of the utility model, the fixing portion 14 includes a first plate 141 and a second plate 142 , the first plate 141 and the second plate 142 are spaced apart from each other and define a limiting groove 143 , and the limiting groove 143 is suitable for accommodating the evaporator tube 121 of the evaporator 12 .

[0047] The limiting groove 143 formed between the first plate 141 and the second plate 142 can accurately locate and stably accommodate the evaporator tube 121 of the evaporator 12. This ensures that the position of the evaporator tube 121 in the refrigeration device 1 is accurate and fixed, and avoids displacement or vibration of the evaporator tube 121 during operation, thereby improving the operational stability and reliability of the refrigeration device 1. At the same time, the arrangement of the first plate 141 and the second plate 142 facilitates the processing of the limiting groove 143, and the formation of the limiting groove 143 by spacing the first plate 141 and the second plate 142 can reduce the processing difficulty of the limiting groove 143.

[0048] In some embodiments, the first plate 141 and the second plate 142 may be integrally formed or may be two plates processed separately.

[0049] According to an embodiment of the present invention, the free end of the first plate 141 and the free end of the second plate 142 are respectively formed with guide inclined surfaces 144 that are inclined away from each other in a direction away from the return air duct 13 .

[0050] The setting of the guiding inclined surface 144 enables the evaporator tube 121 to slide more easily when inserted into the limiting groove 143. Since the inclined surfaces are inclined away from each other in the direction away from the return air duct 13, they provide a natural guiding path for the evaporator tube 121, making the installation process smoother and reducing the difficulty of installation.

[0051] At the same time, the setting of the guide slope 144 can also reduce the friction between the evaporator tube 121 and the fixing part 14 during the installation process, which can not only reduce the resistance during installation, but also reduce the risk of damage to the surface of the evaporator tube 121 due to friction, thereby extending the service life of the evaporator tube 121.

[0052] In addition, the guide slope 144 can ensure that the evaporator tube 121 slides into the limit groove 143 in the correct direction during installation, which can avoid damage to the evaporator 12 due to incorrect installation direction, improve installation accuracy, ensure the safety of the evaporator tube 121, and thus ensure the performance and reliability of the refrigeration device 1.

[0053] According to an embodiment of the present invention, arc-shaped grooves 145 recessed away from each other are formed on surfaces of the first plate 141 and the second plate 142 facing each other so as to be suitable for clamping the evaporator tube 121 .

[0054] The design of the arc groove 145 enables the first plate 141 and the second plate 142 to closely fit the shape of the evaporator tube 121, thereby achieving a more stable clamping. This stable clamping method can prevent the evaporator tube 121 from moving or vibrating during operation, thereby ensuring the stability and reliability of the refrigeration device 1.

[0055] According to an embodiment of the present invention, the limiting grooves 143 are configured to be a plurality of grooves 143 that are spaced apart and have different sizes in the extending direction of the first plate 141 and the second plate 142 .

[0056] The plurality of limit grooves 143 of different sizes can adapt to evaporator tubes 121 of different sizes and specifications, thereby increasing the flexibility and adaptability of the refrigeration device 1, making the refrigeration device 1 compatible with more types of evaporators 12 and expanding the scope of application. At the same time, by setting a plurality of limit grooves 143 at intervals, the refrigeration device 1 can arrange the layout of the evaporator tube 121 on the evaporator 12 more flexibly, which helps to optimize the internal structure of the refrigeration device 1 and improve the refrigeration efficiency. Since a plurality of limit grooves 143 of different sizes are provided, the installer can quickly select a suitable limit groove 143 for installation according to the size of the evaporator tube 121, thereby simplifying the installation process and improving work efficiency.

[0057] Each limiting groove 143 is designed according to the evaporator tube 121 of a specific size. Therefore, when the evaporator tube 121 is correctly installed in the limiting groove 143, better stability and reliability can be obtained, which helps to reduce the vibration and displacement of the evaporator tube 121 during operation and improve the performance and life of the refrigeration device 1. When a certain evaporator tube 121 needs to be repaired or replaced, since the size of the limiting groove 143 in which it is located is known, it is easier to find a matching evaporator tube 121 for replacement. This simplifies the maintenance process and reduces maintenance costs.

[0058] According to an embodiment of the utility model, the fixing portion 14 is configured as a plurality of fixing portions 14 spaced apart on the return air duct 13. By spaced apart on the return air duct 13, a stable connection of the evaporator 12 at multiple points can be achieved, and the multi-point connection method can disperse the force, improve the structural stability of the entire refrigeration device 1, reduce vibration and displacement, and ensure the stability of the refrigeration device 1 during operation.

[0059] At the same time, the provision of multiple fixing parts 14 makes the installation of the evaporator 12 more accurate, and the position of each fixing part 14 can be adjusted according to actual needs to ensure that the evaporator tube 121 of the evaporator 12 can be assembled with the corresponding fixing part 14, thereby improving the stability of the fixing of the evaporator 12. In addition, this method can also make the refrigeration device 1 compatible with more evaporators 12 of different sizes, thereby improving the flexibility and adaptability of the refrigeration device 1.

[0060] According to one embodiment of the utility model, the return air duct 13 includes a front cover 131 and a rear cover 132. The front cover 131 is arranged on the side wall of the shell 11. A fixing portion 14 is arranged on the side of the front cover 131 facing the shell 11. Multiple fixing portions 14 are respectively integrally formed with the front cover 131; the rear cover 132 is buckled with the front cover 131.

[0061] Since the fixing portion 14 and the front cover 131 are integrally formed, no additional fixing steps are required during installation, which simplifies the installation process. At the same time, the buckling design of the rear cover 132 and the front cover 131 also makes disassembly simple and quick, and is convenient for maintenance and replacement of parts.

[0062] In addition, by integrally molding the fixing part 14 and the front cover 131, structural integration is achieved, and the stability of the overall structure is enhanced. Such a design scheme can reduce the connection points between the return air duct 13 and the fixing part 14, reduce the risk of failure caused by loose connection, and improve the stability of the operation of the refrigeration device 1.

[0063] The refrigerator according to the utility model is briefly described below.

[0064] The refrigerator according to the utility model includes the refrigeration device 1 in the above embodiment. Since the refrigerator according to the utility model is provided with the refrigeration device 1 in the above embodiment, after the refrigerator is equipped with the refrigeration device 1, due to the design of the fixing portion 14, the installation and removal of the evaporator 12 becomes simpler and faster, thereby improving the convenience of maintenance of the refrigerator. The position-limiting connection between the fixing portion 14 and the evaporator 12 can reduce the displacement or vibration that may occur in the evaporator 12 during operation, thereby ensuring the stability and reliability of the refrigeration effect of the refrigerator. In addition, the arrangement relationship between the fixing portion 14 and the return air duct 13 realizes the compactness of the structure of the refrigeration device 1, which helps to save space inside the refrigerator.

[0065] In some embodiments, the fixing portion 14 may also be integrally formed with other necessary structures of the refrigeration device 1 . For example, when an air supply duct needs to be provided on the refrigeration device 1 , the fixing portion 14 may also be integrally formed with the air supply duct and is not limited to the return air duct 13 .

[0066] In summary, the refrigeration device 1 integrates the fixing part 14 on the front cover 131 of the return air duct 13, and sets the mounting hole 112 on the side wall of the shell 11. When the return air duct 13 is assembled, the fixing part 14 can extend into the accommodating cavity 111 after passing through the mounting hole. At this time, the evaporator tube 121 on the evaporator 12 can be directly assembled with the fixing part 14, making the assembly of the evaporator 12 more convenient and quick. The first plate 141 and the second plate 142 are arranged on the fixing part 14 to form a limiting groove 143. The limiting groove 143 is used to clamp the evaporator tube 121. The surfaces of the first plate 141 and the second plate 142 facing each other are formed with arc grooves 145 that are recessed away from each other. The arc groove 145 can make the limiting groove 143 fit the outer surface of the evaporator tube 121, thereby improving the stability of the fixing part 14 fixing the evaporator 12. A plurality of arc grooves 145 are arranged at intervals in the extension direction of the first plate 141 and the second plate 142, so that the fixing portion 14 can adapt to evaporator tubes 121 of different sizes, thereby improving the versatility of the fixing portion 14. The free ends of the first plate 141 and the second plate 142 are respectively formed with guiding inclined surfaces 144 that are away from each other, thereby making it easier for the evaporator tube 121 to be inserted into the limiting groove 143. The refrigeration device 1 simplifies the assembly process of the evaporator 12 by designing the fixing portion 14, without the need for additional assembly tools, thereby improving the assembly efficiency of the evaporator 12 and the stability of the evaporator 12 after assembly.

[0067] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0068] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0069] In the description of the present invention, "plurality" means two or more.

[0070] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact but are in contact with each other via another feature therebetween.

[0071] In the description of the present invention, a first feature “above”, “over” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0072] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0073] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A refrigeration device, characterized in that: include: A housing having a receiving cavity formed therein; an evaporator, the evaporator being disposed in the accommodating chamber; A return air duct is formed with a fixing portion, the fixing portion extends into the accommodating cavity and is limitedly connected to the evaporator.

2. The refrigeration device according to claim 1, characterized in that: A mounting hole is formed on the side wall of the shell to connect the accommodating cavity with the outside, the free end of the fixing portion passes through the mounting hole and extends into the accommodating cavity, and the fixing portion abuts against the inner wall of the mounting hole.

3. The refrigeration device according to claim 2, characterized in that: A slot is formed on the fixing portion, and an evaporator tube is provided on the evaporator. The evaporator tube can be selectively received in the slot and limitedly matched with the slot.

4. The refrigeration device according to claim 3, characterized in that: The fixing portion comprises: A first plate and a second plate, wherein the first plate and the second plate are spaced apart from each other and define a limiting groove, wherein the limiting groove is suitable for accommodating an evaporator tube of the evaporator.

5. The refrigeration device according to claim 4, characterized in that: The free end of the first plate and the free end of the second plate are respectively formed with guiding inclined surfaces inclined away from each other in a direction away from the return air duct.

6. The refrigeration device according to claim 5, characterized in that: The surfaces of the first plate and the second plate facing each other are formed with arc-shaped grooves recessed away from each other so as to be suitable for clamping the evaporator tube.

7. The refrigeration device according to claim 6, characterized in that: The limiting grooves are configured to be a plurality of grooves that are spaced apart in the extending direction of the first plate and the second plate and have different sizes.

8. The refrigeration device according to claim 6, characterized in that: The fixing portion is configured to be a plurality of fixing portions which are arranged at intervals on the return air duct.

9. The refrigeration device according to claim 8, characterized in that: The return air duct comprises: A front cover, the front cover is arranged on the side wall of the shell, the fixing part is arranged on a side of the front cover facing the shell, and a plurality of the fixing parts are respectively formed integrally with the front cover; A rear cover is buckled with the front cover.

10. A refrigerator, characterized in that: A refrigeration device comprising any one of claims 1 to 9.

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