Refrigeration equipment

Abstract

A first outer air duct, a plurality of first induced air ducts and a plurality of first inner air ducts are sequentially arranged on a first side wall of an inner container of the refrigeration equipment in the direction away from an opening, the first outer air duct and the first inner air ducts extend in the direction parallel to the opening, and the first induced air ducts are sequentially arranged in the direction parallel to the opening. Each first air inducing channel comprises a first airflow channel, the first airflow channels extend in the depth direction of the storage space, and the side, close to the opening, in the storage space communicates with the side, away from the opening, in the storage space through the first airflow channels. According to the refrigeration equipment, communication between the near-opening area and the far-opening area is achieved, the problem that cold air circulation is not smooth due to stacking of objects in the storage space is avoided, the cold air can spontaneously pass through the first air inducing channel by means of the air supply dynamic pressure difference between the near-opening side and the far-opening side, the cold air is effectively conveyed to the far-opening side from the near-opening side, and the cold air circulation efficiency is improved. The effect of balanced temperature distribution is achieved, and the phenomenon of condensation and frosting of the door body is prevented.

Description

Technical Field

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

[0002] With the development of society and the economy and the continuous improvement of people's living standards, refrigeration equipment, as an important household appliance for food storage and preservation, has been widely used in various scenarios such as homes, catering, and retail. Taking freezers as an example, including direct-cooling freezers and air-cooling freezers, when a large number of stored items are placed inside the freezer, some areas will experience low-temperature condensation due to excessive concentration of cold air. Especially when the cold air at the top cannot dissipate, the accumulated cold air will condense and even frost on the glass door surface near the top layer. For commercial freezers, this damages the appearance, makes it inconvenient for consumers to see the items inside, affects the consumer experience, and also affects the temperature balance and energy efficiency of the entire refrigeration equipment. Summary of the Invention

[0003] To address the problem of condensation and frost formation on doors due to uneven temperature distribution in existing technologies, the purpose of this invention is to provide a refrigeration device that can prevent excessive concentration of cold air at the door and improve the efficiency of internal cold air circulation. 。

[0004] To achieve the above-mentioned objectives, one embodiment of this utility model provides a refrigeration device, comprising:

[0005] The inner liner forms an open storage space inside. A first external air duct, a first air intake duct, and a first internal air duct are sequentially arranged on the first side wall of the inner liner in a direction away from the opening. Both the first external air duct and the first internal air duct extend in a direction parallel to the opening. Multiple first air intake ducts are sequentially arranged in a direction parallel to the opening. Each first air intake duct includes a first airflow channel. The first airflow channel extends along the depth direction of the storage space. The side of the storage space near the opening is connected to the side away from the opening through the first airflow channel.

[0006] As a further improvement of this utility model, the refrigeration equipment includes an evaporator compartment located at the bottom of the inner liner, the evaporator compartment includes an evaporator cover, and the evaporator cover is provided with a return air vent that connects the storage space and the interior of the evaporator compartment.

[0007] As a further improvement of this utility model, the return air vent is located on the evaporator cover at one end away from the first external air duct.

[0008] As a further improvement of this utility model, the first sidewall extends along the length direction of the storage space, and both the first external air duct and the first internal air duct extend along the length direction of the storage space.

[0009] The return air vent extends along the length of the storage space.

[0010] As a further improvement of this utility model, the refrigeration equipment includes a first receiving cavity, in which a first fan is disposed, and the first receiving cavity is simultaneously connected to the first external air duct and the first internal air duct. The first fan drives airflow from the evaporator compartment to the first receiving cavity.

[0011] As a further improvement of this utility model, the first air duct includes a groove formed by the recess of the first sidewall and a cover plate covering the groove, wherein the groove and the cover plate enclose the first airflow channel.

[0012] The end of the cover plate near the opening forms a first air vent between it and the first sidewall, and the end of the cover plate away from the opening forms a second air vent between it and the first sidewall.

[0013] As a further improvement of this utility model, the first external air duct includes a plurality of first air outlets facing the storage space, and the first internal air duct includes a plurality of second air outlets facing the storage space.

[0014] Along the depth direction of the storage space, the first air outlet and the second air outlet are aligned.

[0015] On a projection plane perpendicular to the depth direction, the first air intake duct and the first air outlet are staggered.

[0016] As a further improvement of this utility model, the refrigeration device includes a door body disposed at the opening, and the airflow from the first air outlet is inclined downward and away from the door body.

[0017] As a further improvement of this utility model, a second external air duct, a second air intake duct, and a second internal air duct are sequentially arranged on the second sidewall of the inner liner in a direction away from the opening. The first sidewall and the second sidewall are arranged opposite to each other. Both the second external air duct and the second internal air duct extend in a direction parallel to the opening. Multiple second air intake ducts are sequentially arranged in a direction parallel to the opening. Each second air intake duct includes a second airflow channel. The second airflow channel extends along the depth direction of the storage space. The side of the storage space near the opening is connected to the side away from the opening through the second airflow channel.

[0018] As a further improvement of this utility model, a vertical air duct is provided on the second side wall of the inner liner to connect the second external air duct and the second internal air duct. Both the second external air duct and the second internal air duct are set as return air ducts. A vertical ventilation hole is opened on the side of the vertical air duct facing the storage space. The vertical ventilation hole extends along the depth direction of the storage space.

[0019] Compared with commonly used technologies, this utility model has the following beneficial effects: This refrigeration equipment utilizes multiple functional zone air ducts arranged sequentially on the first side wall of the inner liner to achieve efficient circulation of cold air within the storage space. In particular, through multiple first air ducts, the connection between the near-opening and far-opening areas is achieved, avoiding the problem of poor cold air circulation caused by the stacking of items in the storage space. Moreover, by utilizing the air pressure difference between the near-opening and far-opening sides, cold air can spontaneously pass through the first air ducts and be effectively transported from the near-opening side to the far-opening side, achieving a balanced temperature distribution. This not only prevents excessive cold air at the top layer from causing the glass door temperature to be too low and condensation and frost to occur, but also greatly improves the efficiency of cold air recirculation inside the storage space, achieving energy saving, consumption reduction, and improved user experience. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of a freezer along its length according to an embodiment of the present invention;

[0021] Figure 2 This is a cross-sectional view of a freezer along the width direction according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of a freezer along its length in one aspect of an embodiment of the present invention.

[0023] Figure 4 This is a schematic diagram of the structure of a freezer according to an embodiment of the present invention, viewed in cross-section along the width direction.

[0024] Among them, 100 is the inner liner; 101 is the storage space; 102 is the opening; 10 is the first side wall; 20 is the first external air duct; 21 is the first air outlet; 30 is the first air intake duct; 31 is the first airflow channel; 32 is the groove; 33 is the cover plate; 34 is the first air vent; 35 is the second air vent; 40 is the first internal air duct; 41 is the second air outlet; 50 is the door; 60 is the second side wall; 61 is the second external air duct; 62 is the second air intake duct; 63 is the second internal air duct; 64 is the vertical air duct; 641 is the vertical ventilation hole; 70 is the evaporator compartment; 71 is the evaporator compartment cover; 72 is the return air vent; 80 is the first receiving cavity; T1 is the length direction; T2 is the width direction; T3 is the depth direction. Detailed Implementation

[0025] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0026] It should be understood that terms such as “above,” “over,” “below,” and “under” used herein to indicate spatial relative position are for illustrative purposes to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. The terms “spatial relative position” may be intended to include different orientations of the equipment in use or operation other than those shown in the figures.

[0027] One embodiment of this utility model provides a refrigeration device that can avoid excessive concentration of cold air at the door and improve the efficiency of internal cold air circulation.

[0028] The refrigeration equipment in this embodiment can be a refrigerator, freezer, upright refrigerator, wine cabinet, etc. The following embodiment will be described using a freezer as an example.

[0029] The freezer includes a shell, an inner liner 100, and a door 50. The inner liner 100 is located inside the shell, and the interior of the inner liner 100 forms a storage space 101 with an opening 102. The door 50 can open or close the opening 102.

[0030] For horizontal commercial freezers, the door 50 can be made of glass or transparent resin, allowing users to see the items stored in the storage space 101 from top to bottom.

[0031] An evaporator compartment 70 is provided at one end of the storage space 101 along the length direction T1, and an evaporator is provided in the evaporator compartment 70.

[0032] The inner liner 100 has a bottom wall and four side walls. The storage space 101 enclosed by the bottom wall and the four side walls is roughly rectangular in shape. Its length direction T1 is the direction of the longer side of the cuboid, its width direction T2 is the direction of the wider side of the cuboid, and its depth direction T3 is the direction of the height of the cuboid. These directions can be referenced... Figures 1-3 As shown.

[0033] To clearly express the position and direction described in this embodiment, up and down are defined with reference to the direction of gravity. The freezer in this embodiment can be a horizontal freezer, which is generally placed on a horizontal surface with its opening 102 facing upwards. The length direction T1 of the freezer is the left-right direction, the width direction T2 is the front-back direction, and the depth direction T3 is the up-down direction.

[0034] like Figure 1As shown, on one of the four side walls, namely the first side wall 10, a first external air duct 20, a first air intake duct 30, and a first internal air duct 40 are arranged sequentially in a direction away from the opening 102. The first external air duct 20 and the first internal air duct 40 both extend in a direction parallel to the opening 102.

[0035] In other words, the first external air duct 20, the first air intake duct 30, and the first internal air duct 40 are arranged sequentially from top to bottom.

[0036] The plane containing opening 102 is the plane containing the front, back, left, and right sides. Figure 1 The side wall can be the front or rear wall of the freezer, rather than the left or right wall. Taking the rear wall as an example, both the first external air duct 20 and the first internal air duct 40 extend in a direction parallel to the opening 102, that is, both the first external air duct 20 and the first internal air duct 40 extend in the left and right direction.

[0037] The first external air duct 20 is located in the area near the opening 102 and can provide cold air to the space above the freezer.

[0038] The first internal air duct 40 is located in an area away from the opening 102 and can provide cold air to the space below the freezer.

[0039] The dual-layer air outlet structure of the first external air duct 20 and the first internal air duct 40 achieves overall temperature balance inside the storage space 101.

[0040] Multiple first air ducts 30 are arranged sequentially in a direction parallel to the opening 102. That is, multiple first air ducts 30 are arranged sequentially in the left-right direction in the form of multiple distribution units.

[0041] Each first air duct 30 includes an independent first airflow channel 31. The first airflow channel 31 extends along the depth direction T3 of the storage space 101, and the side of the storage space 101 near the opening 102 is connected to the side away from the opening 102 through the first airflow channel 31.

[0042] The first air duct 30 forms an airflow path that connects the side near the opening 102 and the side away from the opening 102, realizing air circulation. The size, cross-sectional shape, and distribution density of this duct on the sidewall can be optimized according to specific cooling capacity and temperature control requirements to ensure uniform airflow distribution.

[0043] On the one hand, since items are usually stacked from bottom to top inside a freezer, it is difficult for the cold air above to sink. The first airflow channel 31 can guide the cold air above to flow downward.

[0044] On the other hand, by utilizing the air pressure difference between the side near the opening 102 and the side far from the opening 102, the cold air can be spontaneously transported from the side near the opening 102 to the side far from the opening 102 through the first air duct 30, achieving the effect of uniform temperature distribution.

[0045] In this way, the stronger cooling energy in the upper layer can be transported to the lower layer through the first air duct 30, thereby avoiding the problem of condensation and frost on the door 50 caused by the accumulation of local cooling energy in the upper layer, and achieving the purpose of overall temperature balance.

[0046] Furthermore, such as Figure 3 and 4 As shown, the refrigeration equipment includes an evaporator compartment 70 located at the bottom of the inner liner 100. The evaporator compartment 70 includes an evaporator cover 71, and an air return vent 72 is provided on the evaporator cover 71 to connect the storage space 101 and the interior of the evaporator compartment 70.

[0047] The evaporator cover 71 can have a certain degree of heat insulation to prevent the cold energy of the evaporator compartment 70 from being directly conducted to the storage space 101.

[0048] The return air vent 72 is used to allow the air blown into the storage space 101 to return to the evaporator chamber 70, forming a stable circulating air flow. The storage space 101 and the evaporator chamber 70 are connected through the return air vent 72 on the evaporator cover 71. The low-temperature cold air can remove the heat in the storage space 101 and is quickly cooled by the evaporator. It is then recycled through the system to achieve the technical effects of constant temperature and energy saving.

[0049] The return air vent 72 is located on the evaporator cover 71 at the end away from the first external air duct 20.

[0050] For a freezer with a single-sided air outlet, for example, if the first side wall 10 used for air outlet is the rear wall of the freezer, the return air vent 72 is located on the side closer to the front, so that the cold air sent in from the outside will not flow directly away from the return air vent 72, thus avoiding airflow short circuit.

[0051] In this embodiment, the return air vent 72 extends along the length direction T1 of the storage space 101.

[0052] Combined with the first external air duct 20 and the first internal air duct 40 along the length direction T1, the return air area can form a relatively wide coverage with the supply air area, promote the full mixing of air in the space, avoid local low temperature or overcooling caused by uneven local airflow distribution, and ensure the overall environmental temperature balance.

[0053] Especially for the inner liner 100 with a spliced ​​structure, the production process of setting the return air vent 72 on the first side wall 10 or the second side wall 60 is quite difficult. Setting the return air vent 72 on the evaporator cover 71 can make production easier.

[0054] Furthermore, the return air vent 72 increases the return air volume above the evaporator compartment 70, preventing the upper cold air from failing to descend to the area near the upper surface of the evaporator compartment 70, thus preventing the load at that location from being cooled.

[0055] like Figure 1 As shown, the refrigeration equipment includes a first receiving cavity 80, a first fan is installed in the first receiving cavity 80, the first receiving cavity 80 is simultaneously connected to a first external air duct 20 and a first internal air duct 40, and the first fan drives airflow from the evaporator compartment 70 to the first receiving cavity 80.

[0056] The first fan can be a centrifugal fan. The low-temperature air generated by the evaporator compartment 70 is drawn into the first receiving cavity 80 by the centrifugal fan and then blown into the first outer air duct 20 and the first inner air duct 40.

[0057] like Figure 2 As shown, the first air duct 30 includes a groove 32 formed by the recess of the first sidewall 10 and a cover plate 33 covering the groove 32. The groove 32 and the cover plate 33 together enclose the first airflow channel 31.

[0058] The first sidewall 10 can be set as a sheet metal part or a plastic part. Taking a sheet metal part as an example, the groove 32 is produced by stamping. Taking a plastic part as an example, the groove 32 is produced by injection molding or vacuum forming.

[0059] By pre-processing a groove 32 extending along the wind direction on the first sidewall 10, the depth and width of the groove 32 are optimized to ensure the formation of a first airflow channel 31 of sufficient size; then, a cover plate 33 with appropriate rigidity and sealing performance is installed at the top of the groove 32, so that the first airflow channel 31 is formed after the groove 32 and the cover plate 33 are closed.

[0060] In addition, by reasonably setting the gap between the cover plate 33 and the first side wall 10, two different air vents are formed: the first air vent 34 is provided between the end near the opening 102 and the first side wall 10, while the second air vent 35 is formed between the end away from the opening 102 and the first side wall 10 through the cover plate 33.

[0061] Figure 2 In the middle, the first air vent 34 is located above the second air vent 35. The first air vent 34 is used for air intake, and the second air vent 35 is used for air exhaust.

[0062] This allows airflow to flow from top to bottom from the inside of the first side wall 10 without being blocked by the items stored inside the freezer.

[0063] Furthermore, such as Figure 1As shown, the first external air duct 20 includes a plurality of first air outlets 21 facing the storage space 101, and the first internal air duct 40 includes a plurality of second air outlets 41 facing the storage space 101. Along the depth direction T3 of the storage space 101, the first air outlets 21 and the second air outlets 41 are aligned. On the projection plane perpendicular to the depth direction T3, the first air intake duct 30 and the first air outlets 21 are staggered.

[0064] In this way, both the first air outlet 21 and the second air outlet 41 blow cold air into the storage space 101, forming an alternating arrangement with the first air duct 30. This alternating arrangement can prevent airflow short-circuiting, such as the cold air just blown out of the first air outlet 21 directly into the first air duct 30, or the cold air from the lower second air outlet 41 being blown in the opposite direction into the upper first air duct 30 due to the relatively higher air pressure, instead of forming the expected downward airflow in the first air duct 30. That is, it ensures that the airflow flows in the expected direction.

[0065] On the other hand, this staggered arrangement can create an ideal temperature gradient within the storage space 101. Areas with excessive pressure are more likely to appear between adjacent first air outlets 21. The air flows out through the first air duct 30, ensuring the balanced distribution of cold air within the storage space 101.

[0066] Furthermore, the airflow from the first air outlet 21 is directed downwards and tilted away from the door 50.

[0067] By adjusting the air outlet angle of the first air outlet 21, the glass door 50 at the opening 102 of the freezer is guided to avoid blowing the cold air directly onto the surface of the door 50, thus preventing condensation from forming on the door 50 due to low temperature.

[0068] The following three embodiments are further elaborated: Embodiment 1 is single-sided air supply and bottom return air, Embodiment 2 is single-sided air supply and single-sided return air, and Embodiment 3 is double-sided air supply and bottom return air.

[0069] Example 1

[0070] In this embodiment, the surface of the second sidewall 60 opposite the first sidewall 10 may not have an air outlet or return structure, and the structure is relatively simple. As mentioned above, only the return air vent 72 is provided on the evaporator cover 71.

[0071] Example 2

[0072] In this embodiment, as Figure 2 and 4 As shown, a second external air duct 61, a second air intake duct 62, and a second internal air duct 63 are sequentially arranged on the second side wall 60 of the inner liner 100 in a direction away from the opening 102, and the first side wall 10 and the second side wall 60 are arranged opposite to each other.

[0073] Taking the first side wall 10 as the rear wall as an example, the second side wall 60 is the front wall. In this embodiment, the structure of single-sided air supply and single-sided air return realizes that the rear wall is used for air supply and the front wall is used for air return.

[0074] The second external air duct 61 and the second internal air duct 63 both extend in a direction parallel to the opening 102. Multiple second air ducts 62 are arranged in sequence in a direction parallel to the opening 102. Each second air duct 62 includes a second airflow channel. The second airflow channel extends along the depth direction T3 of the storage space 101. The side of the storage space 101 near the opening 102 is connected to the side away from the opening 102 through the second airflow channel.

[0075] The first external air duct 20 and the first internal air duct 40 on the first side wall 10 are configured as air outlet ducts to send the modulated cold air to the storage space 101, while the second external air duct 61 and the second internal air duct 63 on the second side wall 60 are configured as air return ducts.

[0076] The second air duct 62 performs a similar function to the first air duct 30, guiding the cold air from the top of the freezer near the opening 102 to the bottom.

[0077] The first side wall 10 and the second side wall 60 respectively employ air outlet and return functions, utilizing the air pressure difference and air convection between the two opposite channels to achieve single-sided air outlet and opposite-sided air return. This can prevent problems such as excessively low local temperature and condensation caused by excessively concentrated cold air, while also improving the internal airflow circulation efficiency and energy-saving effect of the refrigeration system.

[0078] Furthermore, such as Figure 4 As shown, a vertical air duct 64 is provided on the second side wall 60 of the inner liner 100, which connects the second external air duct 61 and the second internal air duct 63. A vertical ventilation hole 641 is opened on the side of the vertical air duct 64 facing the storage space 101. The vertical ventilation hole 641 extends along the depth direction T3 of the storage space 101.

[0079] The vertical air duct 64 is connected to both the second external air duct 61 and the second internal air duct 63. The vertical air duct 64 can be designed as a tubular structure or a groove 32, and its opening size and distribution can be optimized according to the required return air volume and temperature control requirements.

[0080] Through the vertical ventilation holes 641, the relatively concentrated return air in the storage space 101 can be quickly collected and introduced into the return air path, further improving the overall airflow recovery efficiency, while reducing the possibility of uneven temperature and condensation in the storage space 101.

[0081] Example 3

[0082] This embodiment 3 also includes the second external air duct 61, the second air intake duct 62, and the second internal air duct 63 as in embodiment 2. The difference is that this embodiment uses multiple fans to guide the airflow in different directions, so that the second external air duct 61 and the second internal air duct 63 are also used for air outlet. This can enhance the overall cold air coverage and ensure a more balanced temperature distribution in the storage space 101.

[0083] The freezer directs air from the rear wall to the front and from the front wall to the rear. These two airflows may converge in the storage space 101, forming a confluence or even a vortex, creating a cold air mixing zone. This airflow agitation helps prevent the formation of "hot and cold spots," improves the temperature uniformity of the entire storage space 101, and enhances the heat exchange efficiency of the cold air, allowing for faster and more even cooling of goods.

[0084] Compared with the prior art, this embodiment has the following beneficial effects:

[0085] This refrigeration equipment utilizes multiple functional zone air ducts sequentially arranged on the first side wall 10 of the inner liner 100 to achieve efficient circulation of cold air within the storage space 101. In particular, through multiple first air intake ducts 30, the area near the opening 102 and the area away from the opening 102 are connected, avoiding the problem of poor cold air circulation caused by the stacking of items in the storage space 101. Furthermore, by utilizing the air pressure difference between the side near the opening 102 and the side away from the opening 102, cold air can spontaneously pass through the first air intake ducts 30 and be effectively transported from the side near the opening 102 to the side away from the opening 102, achieving a uniform temperature distribution. This not only prevents excessive cold air at the top layer from causing the glass door temperature to be too low and condensation and frost to form, but also greatly improves the efficiency of cold air recirculation inside the storage space 101, achieving energy saving, consumption reduction, and improved user experience.

[0086] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0087] The detailed descriptions listed above are merely specific descriptions of feasible implementation methods of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementation methods or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. A refrigeration device, characterized in that, include: The inner liner forms an open storage space inside. A first external air duct, a first air intake duct, and a first internal air duct are sequentially arranged on the first side wall of the inner liner in a direction away from the opening. Both the first external air duct and the first internal air duct extend in a direction parallel to the opening. Multiple first air intake ducts are sequentially arranged in a direction parallel to the opening. Each first air intake duct includes a first airflow channel. The first airflow channel extends along the depth direction of the storage space. The side of the storage space near the opening is connected to the side away from the opening through the first airflow channel.

2. The refrigeration equipment according to claim 1, characterized in that, The refrigeration equipment includes an evaporator compartment located at the bottom of the inner liner. The evaporator compartment includes an evaporator cover, and the evaporator cover is provided with a return air vent that connects the storage space and the interior of the evaporator compartment.

3. The refrigeration equipment according to claim 2, characterized in that, The return air vent is located on the evaporator cover at the end away from the first external air duct.

4. The refrigeration equipment according to claim 3, characterized in that, The first sidewall extends along the length of the storage space, and both the first external air duct and the first internal air duct extend along the length of the storage space. The return air vent extends along the length of the storage space.

5. The refrigeration equipment according to claim 2, characterized in that, The refrigeration equipment includes a first receiving cavity, in which a first fan is disposed. The first receiving cavity is simultaneously connected to the first external air duct and the first internal air duct. The first fan drives airflow from the evaporator compartment to the first receiving cavity.

6. The refrigeration equipment according to claim 1, characterized in that, The first air duct includes a groove formed by the recess of the first sidewall and a cover plate covering the groove, the groove and the cover plate enclosing the first airflow channel; The end of the cover plate near the opening forms a first air vent between it and the first sidewall, and the end of the cover plate away from the opening forms a second air vent between it and the first sidewall.

7. The refrigeration equipment according to claim 1, characterized in that, The first external air duct includes a plurality of first air outlets facing the storage space, and the first internal air duct includes a plurality of second air outlets facing the storage space. Along the depth direction of the storage space, the first air outlet and the second air outlet are aligned. On a projection plane perpendicular to the depth direction, the first air intake duct and the first air outlet are staggered.

8. The refrigeration equipment according to claim 7, characterized in that, The refrigeration equipment includes a door body disposed at the opening, and the airflow from the first air outlet is tilted downwards and away from the door body.

9. The refrigeration equipment according to claim 1, characterized in that, On the second sidewall of the inner liner, a second external air duct, a second air intake duct, and a second internal air duct are sequentially arranged in a direction away from the opening. The first sidewall and the second sidewall are arranged opposite to each other. Both the second external air duct and the second internal air duct extend in a direction parallel to the opening. Multiple second air intake ducts are sequentially arranged in a direction parallel to the opening. Each second air intake duct includes a second airflow channel. The second airflow channel extends along the depth direction of the storage space. The side of the storage space near the opening is connected to the side away from the opening through the second airflow channel.

10. The refrigeration equipment according to claim 9, characterized in that, A vertical air duct connecting the second external air duct and the second internal air duct is provided on the second side wall of the inner liner. Both the second external air duct and the second internal air duct are set as return air ducts. A vertical ventilation hole is opened on the side of the vertical air duct facing the storage space. The vertical ventilation hole extends along the depth direction of the storage space.

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