Refrigeration appliance

Abstract

The utility model discloses a refrigeration equipment, including the box body of taking and putting window and the door body of being located in the box body close to taking and putting window one side. The box body includes the inner bag with the storage compartment, the refrigeration system of the cold supply to storage compartment, the air duct system of connecting both. The air duct includes the first air duct along the rear wall of inner bag extension and with refrigeration system intercommunication, the second air duct along the top wall of inner bag extension, and the second air duct has the top air outlet with storage compartment intercommunication, and the first air duct has first, second air supply structure, and first air supply structure is closer to the top air outlet. First, second air supply structure is equipped with respectively with the first, second air outlet with storage compartment intercommunication, and the size of first air outlet is greater than second air outlet in the height direction of box body, and / or the distance between first air outlet and door body is greater than second air outlet. The utility model has realized the evenness of promoting the temperature distribution in storage compartment, avoids the frost or condensation phenomenon of door body simultaneously.

Description

Technical Field

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

[0002] Commercial refrigerated display cases are typically upright and primarily used for selling beverages. Their refrigeration system, located at the rear of the unit, delivers air cooled by an evaporator through ducts to the storage compartment. These ducts are usually located on the rear wall of the storage compartment. However, this rear-flow refrigeration method results in uneven temperature distribution within the storage compartment. Items in the front row, closer to the door, are often retrieved first, but because they are further from the air outlet, they are warmer and cool more slowly. The area in front of the refrigeration system is a dead zone for cold air circulation and, being close to the door and the system, is subjected to high temperatures from both the outside and the system itself, leading to higher temperatures and a negative user experience. Conversely, items in the rear row are often less convenient to access, but because they are directly exposed to cold air, they are cooler and may even over-cool, posing a risk of icing and frostbite, resulting in significant energy waste.

[0003] Existing technology involves installing top air ducts on the top wall of the refrigeration equipment to provide auxiliary airflow to the front load area, thereby improving the problem of uneven temperature distribution. However, while this setup can assist in cooling the front load area, the airflow is concentrated at the top front of the cabinet, and the vertical air curtain formed by the top air outlet is easily impacted by the airflow from the back, exacerbating frost or condensation on the door and obstructing the view of the internal items from the outside. Furthermore, the lower front area of ​​the cabinet, especially the area in front of the refrigeration system, suffers from insufficient downward cooling, resulting in inadequate cold air circulation and excessively high temperatures. Therefore, it is necessary to provide an improved refrigeration equipment to solve these problems. Utility Model Content

[0004] The purpose of this invention is to provide a refrigeration device that achieves uniform temperature distribution in storage rooms, while preventing frost or condensation on the doors, thereby improving user experience and reducing energy consumption.

[0005] To achieve the above objectives, this utility model provides a refrigeration device, including a box with a pick-up and put-out window, a door disposed on the side of the box near the pick-up and put-out window, the box including an inner liner forming a storage compartment, a refrigeration system for supplying cooling to the storage compartment, and an air duct connecting the refrigeration system and the storage compartment; The air duct includes a first air duct extending along the rear wall of the inner liner and communicating with the refrigeration system, and a second air duct extending along the top wall of the inner liner. The second air duct has a top air outlet communicating with the storage compartment. The first air duct has a first air supply structure and a second air supply structure. The distance between the first air supply structure and the top air outlet is less than the distance between the second air supply structure and the top air outlet. The first air supply structure and the second air supply structure are respectively provided with a first air outlet and a second air outlet communicating with the storage compartment. Wherein, the dimension of the first air outlet in the height direction of the box is greater than the dimension of the second air outlet in the height direction of the box, and / or the distance between the first air outlet and the door is greater than the distance between the second air outlet and the door.

[0006] According to one embodiment of the present invention, the first air outlet has a dimension of less than or equal to 30mm in the height direction of the housing, and the second air outlet has a dimension of less than or equal to 20mm in the height direction of the housing.

[0007] According to one embodiment of the present invention, the first air supply structure has a first air inlet communicating with a first air duct and a first channel connecting the first air inlet and a first air outlet, and the second air supply structure has a second air inlet communicating with the first air duct and a second channel connecting the second air inlet and a second air outlet, wherein the length of the first channel extending into the storage room is less than the length of the second channel extending into the storage room.

[0008] According to one embodiment of the present invention, the first air supply structure includes a first upper plate and a first lower plate disposed opposite to each other, and the first channel is formed between the first upper plate and the first lower plate; the length of the first upper plate in the front-back direction is greater than the length of the first lower plate in the front-back direction.

[0009] According to one embodiment of the present invention, the length of the first upper plate in the front-to-back direction is 5mm to 25mm; the length of the first lower plate in the front-to-back direction is 5mm to 20mm.

[0010] According to one embodiment of the present invention, the second air supply structure includes a second upper plate and a second lower plate disposed opposite to each other, and a second channel is formed between the second upper plate and the second lower plate; the length of the second upper plate in the front-back direction is greater than the length of the second lower plate in the front-back direction.

[0011] According to one embodiment of the present invention, the lengths of the second upper plate and the second lower plate in the front-to-back direction are 10mm to 35mm.

[0012] According to one embodiment of the present invention, the second upper plate and / or the second lower plate are inclined toward the inner side of the second air supply structure, and the angle with the horizontal direction is greater than 3°.

[0013] According to one embodiment of the present invention, the housing includes a first air duct cover plate, and the first air duct cover plate and the rear wall of the inner liner form a first air duct; the first air supply structure is provided with a first wing facing the first air duct, and the second air supply structure is provided with a second wing facing the first air duct, the first wing and the first air duct cover plate form a first air inlet, and the second wing and the first air duct cover plate form a second air inlet.

[0014] According to one embodiment of the present invention, the first wing and the second wing extend from the first air duct cover plate toward the inner side of the first air duct, and the length of the first wing in the direction perpendicular to the first air duct cover plate is greater than the length of the second wing in the direction perpendicular to the first air duct cover plate.

[0015] According to one embodiment of the present invention, multiple first air supply structures and second air supply structures are arranged in an array along the first air duct cover plate, and the second air supply structure is located in the area below 40% of the total height of the first air duct.

[0016] According to one embodiment of the present invention, the first air duct is provided with two first partitions extending along the height direction of the box. The first partitions are used to divide the first air duct into three adjacent sub-air ducts. The air inlet area of ​​the sub-air ducts located on both sides is larger than the air inlet area of ​​the sub-air duct located in the middle.

[0017] According to one embodiment of the present invention, the air intake area of ​​the sub-air ducts located on both sides is 33% to 40% of the total air intake area of ​​the first air duct; the air intake area of ​​the sub-air duct located in the middle is 20% to 33% of the total air intake area of ​​the first air duct.

[0018] The beneficial effects of this utility model are as follows: By setting a first air duct extending along the rear wall of the inner liner and communicating with the refrigeration system, and a second air duct extending along the top wall of the inner liner, the cold air generated by the refrigeration system can be transported to the second air duct through the first air duct, so that there is sufficient cold air circulation in the front load area to solve the problem of excessive local temperature in the front load area near the door. At the same time, the first air outlet is set to be larger in the height direction of the cabinet than the second air outlet in the height direction of the cabinet, and / or the distance between the first air outlet and the door is greater than the distance between the second air outlet and the door, so that the first air outlet blows out a low-speed, short-distance airflow, reducing its interference and direct impact on the airflow of the top air curtain, and avoiding frost or condensation on the door; and the second air outlet blows out a high-speed, long-distance airflow, so that the front area in the lower part of the storage compartment can receive more cold air, ensuring the cooling of the front area and improving the overall cooling uniformity and efficiency of the storage compartment. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the refrigeration equipment of the present invention; Figure 2 yes Figure 1 A sectional view of the refrigeration equipment along the AA direction; Figure 3 yes Figure 2 Enlarged view of the structure at point A in the middle; Figure 4 This is a front view of the air duct after the door of the refrigeration equipment has been removed; Figure 5 yes Figure 4 Enlarged views of the first and second air supply structures in the middle section; Figure 6 This is a three-dimensional structural diagram of the first air supply structure; Figure 7 This is a three-dimensional structural diagram of the second air supply structure; Figure 8 yes Figure 4 A cross-sectional view of the refrigeration equipment along the BB direction. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Please refer to them. Figures 1 to 8 The figure shown is a preferred embodiment of the present invention.

[0021] It should be understood that, unless otherwise expressly specified and limited, in this application, the terms “upper,” “lower,” “front,” “rear,” “left,” “right,” etc., indicate the orientation or positional relationship based on the user’s facing side of the door of the refrigeration equipment being in front, and are used only for ease of description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed or operated in a specific orientation.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means two or more, and at least two.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "set", "connect", "connect", "fixed" and other such terms should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part.

[0024] This utility model provides a refrigeration device 100. Figures 1 to 8 An embodiment of a refrigeration device 100 according to the present invention is shown.

[0025] like Figures 1 to 3 The refrigeration device 100 shown is preferably a vertical freezer in this embodiment. It should be noted that although the present invention is described using a vertical freezer as an example, the present invention is not limited to this and may also be other devices capable of providing refrigeration functions.

[0026] The refrigeration equipment 100 includes a housing 10 with a pick-up and drop-off window 2, a door 20 disposed on the side of the housing 10 near the pick-up and drop-off window 2, the housing 10 including an inner liner 4 forming a storage compartment 3, a refrigeration system 5 for supplying cooling to the storage compartment 3, and an air duct 1 connecting the refrigeration system 5 and the storage compartment 3.

[0027] The air duct 1 includes a first air duct 11 extending along the rear wall of the inner liner 4 and communicating with the refrigeration system 5, and a second air duct 12 extending along the top wall of the inner liner 4.

[0028] The first air duct 11 has a first air supply structure 13 and a second air supply structure 14. The first air supply structure 13 and the second air supply structure 14 are respectively provided with a first air outlet 131 and a second air outlet 141 communicating with the storage room 3. The second air duct 12 has a top air outlet 121 communicating with the storage room 3.

[0029] The first air duct 11 extends along the rear wall of the inner liner 4 and is directly connected to the refrigeration system 5. In this way, the cold air delivered by the refrigeration system 5 can directly enter the first air duct 11 and enter the storage room 3 through the first air outlet 131 and the second air outlet 141 respectively provided by the first air supply structure 13 and the second air supply structure 14.

[0030] The second air duct 12 is connected to the first air duct 11. Through the top air outlet 121, some of the cold air in the first air duct 11 can be further transported to the front of the storage room 3, forming a cold air curtain from top to bottom in the front load area of ​​the storage room 3.

[0031] The distance between the first air supply structure 13 and the top air outlet 121 is less than the distance between the second air supply structure 14 and the top air outlet 121, that is, the vertical height of the first air supply structure 13 on the first air duct 11 is higher than the vertical height of the second air supply structure 14 on the first air duct 11.

[0032] Wherein, the dimension a1 of the first air outlet 131 in the height direction of the housing 10 is greater than the dimension a2 of the second air outlet 141 in the height direction of the housing 10, and / or the distance between the first air outlet 131 and the door 20 is greater than the distance between the second air outlet 141 and the door 20.

[0033] Reference Figure 5 In one embodiment of the present invention, the dimension a1 of the first air outlet 131 in the height direction of the housing 10 can be set to be larger than the dimension a2 of the second air outlet 141 in the height direction of the housing 10. The larger dimension a1 of the first air outlet 131 in the height direction of the housing 10 means that the width of the air outlet cross section of the first air outlet 131 is wider. By setting the first air outlet 131 with a wide opening, the airflow velocity when it passes through can be effectively reduced, making the airflow more gentle and the air delivery distance shorter. This low-speed, short-distance airflow can minimize its interference and direct impact on the vertical cold air curtain formed by the top air outlet 121 for isolating internal and external heat exchange, thereby maintaining the integrity and stability of the cold air curtain and avoiding the cold air directly impacting the area around the door 20, which would cause the door 20 to frost or condensate, affecting the user experience.

[0034] In contrast, the second air outlet 141 has a smaller dimension a2 in the height direction of the housing 10, that is, the width of the air outlet cross section of the second air outlet 141 is narrower. By setting the narrow second air outlet 141, the flow velocity of the airflow can be significantly increased, and its forward jetting kinetic energy can be increased, thereby effectively extending the air delivery distance and ensuring that the front area of ​​the storage room 3 near the door 20 receives stronger and more concentrated airflow coverage, achieving rapid and sufficient cooling.

[0035] Meanwhile, the second air supply structure 14 has a lower vertical height in the first air duct 11, which helps to enhance the cooling effect in the lower front area of ​​the refrigeration system 5. In particular, the lower front area of ​​the refrigeration system 5 is far from the top air outlet 121, and the vertical cold air curtain formed by the top air outlet 121 does not cover the lower front area of ​​the storage room 3 enough, which can easily form a dead zone for cold air circulation. By setting the second air supply structure 14 at a lower position and with a higher wind speed, cold air can be supplemented for these areas with excessively high local temperatures, optimizing the cold air circulation in the storage room 3 and improving the overall cooling efficiency.

[0036] In another embodiment of the present invention, the distance between the first air outlet 131 and the door 20 may be set to be greater than the distance between the second air outlet 141 and the door 20. The first air outlet 131 is relatively far away from the door 20, that is, relatively far away from the cold air curtain formed by the top air outlet 121. Its airflow can reduce the interference with the cold air curtain and avoid blowing the airflow of the top cold air curtain directly towards the door 20, thus avoiding unnecessary energy consumption and the problem of frost or condensation on the door 20.

[0037] The second air outlet 141 is closer to the door 20 than the first air outlet 131, which increases the forward airflow distance of the second air outlet 141, allowing the front area of ​​the lower part of the storage room 3 to receive more cold air, ensuring the cooling of the front area, and at the same time making up for the insufficient cooling effect of the airflow from the top air outlet 121 in the lower area, thus improving the overall cooling uniformity and efficiency of the storage room 3.

[0038] Of course, in another embodiment of the present invention, the first air outlet 131 may be set to have a dimension a1 in the height direction of the housing 10 that is greater than the second air outlet 141 in the height direction of the housing 10 that is greater than the second air outlet 141 in the height direction of the housing 10, and the distance between the first air outlet 131 and the door 20 may be greater than the distance between the second air outlet 141 and the door 20. This is to combine the technical solutions of the first two embodiments to further improve the uniformity of temperature distribution in the storage room 3, avoid frost or condensation on the door 20, improve user experience and reduce energy consumption.

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments and accompanying drawings. (Refer to...) Figures 2 to 5 In this embodiment, the cabinet 10 includes a rectangular outer shell 6 with a retrieval window 2 on its front, which facilitates the user to retrieve items from the storage compartment 3. An insulation layer 7 made of, for example, polyurethane foam is provided between the inner liner 4 and the outer shell 6 to reduce heat transfer from the inside of the refrigeration equipment 100 to the outside and maintain a stable temperature inside the storage compartment 3.

[0040] The refrigeration equipment 100 also includes a door 20 located on one side of the retrieval window 2. In this embodiment, the door 20 of the upright freezer can be, for example, a glass door panel with a certain thickness, which makes it easy for users to observe the items in the storage room 3 and also has a certain display effect.

[0041] The door 20 is large enough to block the access window 2 and extends vertically at the access window 2. Users can conveniently access items in the storage room 3 by opening and closing the door 20.

[0042] The refrigeration system 5 is located on the lower side of the cabinet 10. The refrigeration equipment 100 continuously provides cooling capacity to the storage compartment 3 through the operation of the refrigeration system 5, maintaining a low temperature in the storage compartment 3 to meet the refrigeration or freezing needs of the items. The cold air generated by the refrigeration system 5 can be transported to the storage compartment 3 through the air duct 1 to cool and store the items in the storage compartment 3.

[0043] The housing 10 includes a first air duct cover plate 8, which forms a first air duct 11 between the first air duct cover plate 8 and the rear wall of the inner liner 4. The housing 10 also includes a second air duct cover plate 9, which forms a second air duct 12 between the second air duct cover plate 9 and the top wall of the inner liner 4.

[0044] The second air duct cover 9 and the first air duct cover 8 are both fixedly connected to the inner liner 4. The connection method can be welding, screw connection or snap connection, etc. The appropriate connection method can be selected according to the specific structure and usage requirements of the refrigeration equipment 100.

[0045] The materials for the second air duct cover 9 and the first air duct cover 8 are quite flexible. For example, they can be made of durable sheet metal, which has good pressure resistance and corrosion resistance and is suitable for various environmental conditions, or they can be made of lightweight and easy-to-form plastic materials or composite materials, which can reduce the overall weight and effectively control costs.

[0046] Meanwhile, the shape and size of the second air duct cover 9 and the first air duct cover 8 can also be set according to the specific structure and size of the inner liner 44 to achieve the best cooling effect.

[0047] The second air duct cover 9 and the first air duct cover 8 can also adopt an integrated structure. This structure not only simplifies the assembly process of the components, but also enhances the stability and sealing of the overall structure.

[0048] The inner liner 4 is provided with an air supply vent 41 and an air return vent 42 that connect the refrigeration system 5 and the storage compartment 3. The first air duct cover 8 is arranged around the outside of the air supply vent 41, so that the cold air generated by the refrigeration system 5 enters the first air duct 11 through the air supply vent 41, and part of the cold air is blown into the storage compartment 3 through the first air outlet 131 and the second air outlet 141 respectively provided by the first air supply structure 13 and the second air supply structure 14.

[0049] The first air duct 11 extends along the rear wall of the inner liner 4, forming a cold air transport passage located on the rear side of the storage compartment 3 in the vertical direction. It can effectively guide the cold air generated by the refrigeration system 5 to different heights in the storage compartment 3, which helps the cold air to diffuse vertically in the storage compartment 3 and ensures that the cold air is evenly distributed in the storage compartment 3.

[0050] The second air duct 12 is connected to the first air duct 11, thus forming a cold air transport path that extends from the back of the storage compartment 3 to the upper side of the storage compartment 3. The cold air is transported through the first air duct 11 to the second air duct 12. The second air duct 12 extends along the top wall of the inner liner 4, forming a cold air transport path in the front and back direction. Through the top air outlet 121, some of the cold air in the first air duct 11 can be further transported to the front of the storage compartment 3, forming a cold air curtain from top to bottom in the front load area of ​​the storage compartment 3. This reduces the adverse effects of heat intrusion from the outside of the door 20 on the temperature of the items, effectively solves the problem of excessively high local temperature in the front load area near the door 20 due to uneven distribution of cold air, improves the uniformity of cold air in the storage compartment 3, further improves the refrigeration or freezing effect of the items in the storage compartment 3, and improves the energy efficiency of the refrigeration system 5.

[0051] The airflow that completes the heat exchange process inside the storage room 3 will flow back to the refrigeration system 5 through the return air vent 42, thereby effectively forming a complete refrigeration cycle.

[0052] The first air supply structure 13 and the second air supply structure 14 are disposed on the first air duct cover plate 8, and can be connected by detachable snap-fit, bolt or other connection methods, which are not limited in this application.

[0053] like Figure 6 and Figure 7 In this embodiment, the first air supply structure 13 is provided with a first latching part 135 that engages with the first air duct cover plate 8, and the second air supply structure 14 is provided with a second latching part 145 that engages with the first air duct cover plate 8.

[0054] By setting the first latching part 135 and the second latching part 145, the first air supply structure 13 and the second air supply structure 14 can be securely installed on the pre-reserved latching holes of the first air duct cover plate 8, which facilitates subsequent disassembly and maintenance.

[0055] Reference Figures 3 to 5 The distance between the first air supply structure 13 and the top air outlet 121 is less than the distance between the second air supply structure 14 and the top air outlet 121. That is, the first air supply structure 13 is located above the second air supply structure 14, and the first air supply structure 13 is closer to the top air outlet 121 than the second air supply structure 14.

[0056] Multiple first air supply structures 13 and second air supply structures 14 are arranged in an array along the first air duct cover plate 8 to ensure that the cold air can be evenly distributed and effectively cover all areas of the storage room 3, thereby further improving the cooling efficiency and temperature uniformity.

[0057] Preferably, the second air supply structure 14 is located in the region below 40% of the total height of the first air duct 11, while the first air supply structure 13 is located in the region above 60% of the total height of the first air duct 11.

[0058] Thus, the first air supply structure 13 is positioned at a higher position within the first air duct 11, allowing the cold air it blows out to diffuse more evenly to the upper and middle parts of the storage room 3. Meanwhile, the second air supply structure 14 is positioned at a lower position within the first air duct 11, allowing the cold air it blows out to focus on cooling the lower and middle parts of the storage room 3, resulting in a more balanced distribution of cold air within the storage room 3.

[0059] In this embodiment, the first air supply structure 13 is arranged in three rows along the height direction of the first air duct cover plate 8 to ensure that the cold air achieves comprehensive and uniform coverage in the upper and middle areas of the storage room 3. The second air supply structure 14 is arranged in two rows along the height direction of the first air duct cover plate 8 to ensure that the cold air also achieves uniform coverage in the lower and middle areas of the storage room 3.

[0060] The dimension a1 of the first air outlet 131 in the height direction of the housing 10 is larger than the dimension a2 of the second air outlet 141 in the height direction of the housing 10. This makes the air outlet cross-section of the first air outlet 131 wider. The wide opening of the first air outlet 131 can reduce the airflow velocity, making the blown airflow more gentle to shorten the air delivery distance, reduce the interference and impact on the airflow of the top vertical air curtain, maintain the stability of the cold air curtain, and prevent frost or condensation on the door 20 from affecting the user experience.

[0061] Conversely, the second air outlet 141 has a smaller dimension a2 in the height direction of the housing 10, and a narrower air outlet cross-section. This narrow-mouth design of the second air outlet 141 can increase the airflow velocity and enhance the forward jet kinetic energy, thereby effectively extending the air delivery distance and improving the cooling effect in the lower front area of ​​the refrigeration system 5. This compensates for the insufficient coverage of the vertical cold air curtain formed by the top air outlet 121 in the lower front area of ​​the storage compartment 3.

[0062] In addition, it can prevent the cold air blown out of the second air outlet 141 from being directly sucked into the refrigeration system 5 by the return air outlet 42 before it has been fully heat exchanged, prevent airflow short circuit, improve the cooling effect in the area in front of the refrigeration system 5 in the storage room 3, optimize the cold air circulation, and thus improve the overall refrigeration efficiency.

[0063] The dimension a1 of the first air outlet 131 in the height direction of the housing 10 is preferably less than or equal to 30 mm, and the dimension a2 of the second air outlet 141 in the height direction of the housing 10 is less than or equal to 20 mm.

[0064] In this embodiment, the dimension a1 of the first air outlet 131 in the height direction of the housing 10 is 18mm, the dimension a2 of the second air outlet 141 in the height direction of the housing 10 is 10~13.5mm, and the dimensions of the first air outlet 131 and the second air outlet 141 in the horizontal direction are the same, both being 150mm.

[0065] Of course, the dimensions of the first air outlet 131 and the second air outlet 141 in the height direction of the housing 10 are not fixed and can be flexibly adjusted according to the actual application scenario and needs to obtain better air outlet speed and achieve the best airflow circulation path and energy consumption performance.

[0066] The distance between the first air outlet 131 and the door 20 is greater than the distance between the second air outlet 141 and the door 20. In other words, the length of the first air supply structure 13 extending from the first air duct cover 8 into the storage compartment 3 is less than the length of the second air supply structure 14 extending from the first air duct cover 8 into the storage compartment 3. By adjusting the distances between the first air outlet 131 and the second air outlet 141 and the door 20, the airflow path within the storage compartment 3 can be further precisely controlled.

[0067] The first air outlet 131 is farther from the door 20 and has a shorter air delivery distance, so the cold air it blows out can cover the middle area of ​​the upper part of the storage room 3 more widely. The second air outlet 141 is closer to the door 20 and has a longer air delivery distance, which can improve the cooling effect on the front area of ​​the lower part of the storage room 3.

[0068] The first air supply structure 13 has a first air inlet 133 communicating with the first air duct 11 and a first channel 132 connecting the first air inlet 133 and the first air outlet 131. The second air supply structure 14 has a second air inlet 143 communicating with the first air duct 11 and a second channel 142 connecting the second air inlet 143 and the first air outlet 131. The length of the first channel 132 extending into the storage room 3 is less than the length of the second channel 142 extending into the storage room 3, so as to satisfy that the distance between the first air outlet 131 and the door 20 is greater than the distance between the second air outlet 141 and the door 20.

[0069] The first air supply structure 13 includes a first upper plate 1321 and a first lower plate 1322 disposed opposite to each other, and a first side plate 1323 connected to both sides of the first upper plate 1321 and the first lower plate 1322; the first upper plate 1321, the first lower plate 1322 and the first side plate 1323 cooperate to form the first channel 132, and the length x1 of the first upper plate 1321 in the front-back direction is greater than the length y1 of the first lower plate 1322 in the front-back direction.

[0070] Because of the significant temperature difference between the storage room 3 and the outside, hot outside air rushes directly into the storage room 3 when the door 20 is opened or closed, causing condensation at the first air outlet 131. Setting the length x1 of the first upper plate 1321 in the front-to-back direction to be greater than the length y1 of the first lower plate 1322 in the front-to-back direction can prevent this condensate from flowing back into the first air duct 11 through the first channel 132, avoiding ice formation and blockage in the first air duct 11, or additional air supply resistance caused by the presence of condensate, thus ensuring smooth air supply in the first air duct.

[0071] Preferably, the length x1 of the first upper plate 1321 in the front-to-back direction is set to 5mm to 25mm; the length y1 of the first lower plate 1322 in the front-to-back direction is set to 5mm to 20mm.

[0072] In this embodiment, the length x1 of the first upper plate 1321 in the front-to-back direction is set to 13.5mm, and the length y1 of the first lower plate 1322 in the front-to-back direction is set to 9.5mm.

[0073] Correspondingly, the second air supply structure 14 includes a second upper plate 1421 and a second lower plate 1422 disposed opposite to each other in the storage room 3, and a second side plate 1423 connected to both sides of the second upper plate 1421 and the second lower plate 1422. The second upper plate 1421, the second lower plate 1422 and the second side plate 1423 surround to form the second channel 142. The length x2 of the second upper plate 1421 in the front-back direction is greater than the length y2 of the second lower plate 1422 in the front-back direction.

[0074] By setting the length x2 of the second upper plate 1421 in the front-to-back direction to be greater than the length y2 of the second lower plate 1422 in the front-to-back direction, it is also possible to prevent the condensate at the second air outlet 141 from flowing back into the first air duct 11 through the second channel 142, thus avoiding ice formation and blockage in the first air duct 11, or additional air supply resistance caused by the presence of condensate, and ensuring smooth air supply in the air duct.

[0075] Preferably, the length x2 of the second upper plate 1421 in the front-to-back direction and the length y2 of the second lower plate 1422 in the front-to-back direction are set to 10mm to 35mm.

[0076] In this embodiment, the length x2 of the second upper plate 1421 in the front-to-back direction is set to 23.5 mm, and the length y2 of the first lower plate 1322 in the front-to-back direction is set to 19.5 mm.

[0077] Of course, the lengths of the first upper plate 1321 and the first lower plate 1322, as well as the lengths of the second upper plate 1421 and the second lower plate 1422, can be appropriately adjusted within the above range according to the specific dimensions of the storage room 3 and the air supply requirements.

[0078] In addition, the second upper plate 1421 and / or the second lower plate 1422 are inclined towards the inside of the second channel 142, and the angle between one side and the horizontal direction is greater than 3°, so as to further increase the flow velocity of the cold air when it exits the second air outlet 141, enhance the kinetic energy of the forward jet, thereby effectively extending the air delivery distance, preventing the cold air blown out of the second air outlet 141 from being directly sucked into the return air outlet 42, preventing airflow short circuit, thereby ensuring the cooling effect of the area in front of the refrigeration system 5 in the storage room 3, optimizing the cold air circulation, and thus improving the overall refrigeration efficiency.

[0079] The first air supply structure 13 is provided with a first wing 134 facing the first air duct 11, and the second air supply structure 14 is provided with a second wing 144 facing the first air duct 11. The first air inlet 133 is formed between the first wing 134 and the first air duct cover plate 8, and the second air inlet 143 is formed between the second wing 144 and the first air duct cover plate 8.

[0080] The first wing edge 134 and the second wing edge 144 extend from the first air duct cover plate 8 toward the inner side of the first air duct 11 in an arc-shaped extension manner. This arc-shaped extension forms a smooth and continuous guide arc surface, which is designed to effectively guide the direction of airflow, so that the airflow entering the first air inlet 133 and the second air inlet 143 can flow more smoothly along the guide arc surface and enter the first channel 132 and the second channel 142.

[0081] By adjusting the length of the first wing 134 and the second wing 144 in the direction perpendicular to the first air duct cover 8, that is, by adjusting the curvature of the first wing 134 and the second wing 144, the amount of air entering the first channel 132 and the second channel 142 can be precisely controlled to adapt to different cooling needs.

[0082] In this embodiment, the length of the first wing 134 in the direction perpendicular to the first air duct cover 8 is greater than the length of the second wing 144 in the direction perpendicular to the first air duct cover 8. That is, the first wing 134 extends a longer distance into the first air duct 11 than the second wing 144, so that the first air inlet 133 has a larger air inlet area than the second air inlet 143, thereby allowing more airflow to enter the first channel 132 through the first air inlet 133.

[0083] Generally speaking, since the first air supply structure 13 is located above the second air supply structure 14, the airflow blown out from the first air outlet 131 has a longer path and a wider coverage area in the storage room compared to the airflow from the second air outlet 141. It can pass through more areas for sufficient heat exchange. Therefore, extending the length of the first fin 134 in the direction perpendicular to the first air duct cover 8 can increase the air intake area of ​​the first air inlet 133, effectively increase the airflow entering the first channel 132, and improve the cooling efficiency.

[0084] Meanwhile, the second wing 144 is relatively short in length in the direction perpendicular to the first air duct cover 8, which makes the air intake area of ​​the second air inlet 143 smaller, so as to limit its air intake capacity, prevent excessive airflow from entering the second channel 142, and ensure that there is sufficient air volume in the upper first channel 132 and the second air duct 12 at the top of the box 10.

[0085] Reference Figure 8 The first air duct 11 is provided with two first partitions 15 extending along the height direction of the housing 10. The first partitions 15 are used to divide the first air duct 11 into three adjacent sub-air ducts 111. Each sub-air duct 111 is provided with multiple first air supply structures 13 and second air supply structures 14 along the height direction of the housing 10.

[0086] The first partition 15 optimizes the airflow path within the first air duct 11, which helps guide the flow of cold air within the first air duct 11, reduces airflow loss caused by cold air eddies or turbulence, and thus improves the flow efficiency and cooling effect of the cold air.

[0087] Meanwhile, the two first partitions 15 extend parallel to each other along the height direction, and are consistent with the flow direction of the cold air blown upward into the first air duct 11 from the air outlet 41, thereby ensuring that the cold air flows more smoothly in the first air duct 11 and effectively reducing the resistance encountered by the cold air in the first air duct 11.

[0088] In addition, the air intake area of ​​the sub-air ducts 111 located on both sides is larger than that of the sub-air duct 111 located in the middle, so that the air volume distributed in the sub-air ducts 111 located on both sides is larger, while the air volume distributed in the sub-air duct 111 located in the middle is relatively smaller.

[0089] Since the load areas on the left and right sides of the storage room 3 are usually close to the main shell 6 of the cabinet 10, the external temperature has a greater impact on them and the heat load is higher. Therefore, when distributing the air volume, more air volume is allocated to this area first to meet the cooling needs of the load areas on the left and right sides of the storage room 3, which can improve the uniformity of the internal temperature of the storage room 3.

[0090] By setting the sub-air ducts 111 located on the left and right sides with large air intake areas, more cold air can be directed to the high-temperature areas on the left and right sides of the storage room 3, better meeting the cooling needs of the load areas on the left and right sides of the storage room 3, and improving the cooling effect on the loads on both sides.

[0091] Preferably, the air intake area of ​​the sub-air ducts 111 located on both sides is 33% to 40% of the total air intake area of ​​the first air duct 11; the air intake area of ​​the sub-air duct 111 located in the middle is 20% to 33% of the total air intake area of ​​the first air duct 11.

[0092] In this embodiment, the ratio of the air intake area of ​​the sub-air ducts 111 located on both sides to the air intake area of ​​the sub-air duct 111 located in the middle is 3.5:3. By precisely adjusting the air intake area ratio of each sub-air duct 111, more cold air can be distributed to the left and right sides of the storage room 3 when flowing through the first air duct 11, while ensuring that the middle area also receives an appropriate amount of cold air supply. This optimizes the distribution of cold air, improves the overall cooling effect, and maintains the uniformity and stability of the temperature in the storage room 3.

[0093] In summary, the refrigeration equipment 100 of this utility model, by setting a first air duct 11 extending along the rear wall of the inner liner 4 and communicating with the refrigeration system 5, and a second air duct 12 extending along the top wall of the inner liner 4, allows the cold air generated by the refrigeration system 5 to be transported through the first air duct 11 to the second air duct 12, ensuring sufficient cold air circulation in the front load area to solve the problem of excessively high local temperature in the front load area near the door 20; at the same time, the first air outlet 131 is set to have a larger dimension in the height direction of the cabinet 10 than the second air outlet 141 in the height direction of the cabinet 10. The dimensions in the degree direction, and / or the distance between the first air outlet 131 and the door 20 is greater than the distance between the second air outlet 141 and the door 20, so that a low-speed, short-distance airflow is blown out from the first air outlet 131, reducing its interference and direct impact on the airflow of the top air curtain, and preventing frost or condensation from forming on the door 20; and a high-speed, long-distance airflow is blown out from the second air outlet 141, so that the front row area at the bottom of the storage room 3 can receive more cold air, ensuring the cooling of the front row area, and improving the overall cooling uniformity and efficiency of the storage room 3.

[0094] In the embodiments provided by this utility model, it should be understood that the above-described structural implementations are merely illustrative. For example, the division of modules is only a logical functional division, and other division methods may be used in actual implementation. The above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A refrigeration device, characterized in that, The box (10) includes a housing (10) with a pick-up and drop-off window (2), a door (20) disposed on the side of the housing (10) near the pick-up and drop-off window (2), the housing (10) includes an inner liner (4) forming a storage compartment (3), a refrigeration system (5) for supplying cooling to the storage compartment (3), and an air duct (1) connecting the refrigeration system (5) and the storage compartment (3); The air duct (1) includes a first air duct (11) extending along the rear wall of the inner liner (4) and communicating with the refrigeration system (5), and a second air duct (12) extending along the top wall of the inner liner (4), the second air duct (12) having a top air outlet (121) communicating with the storage compartment (3). The first air duct (11) has a first air supply structure (13) and a second air supply structure (14); the distance between the first air supply structure (13) and the top air outlet (121) is less than the distance between the second air supply structure (14) and the top air outlet (121); the first air supply structure (13) and the second air supply structure (14) are respectively provided with a first air outlet (131) and a second air outlet (141) communicating with the storage room (3); Wherein, the first air outlet (131) is larger in the height direction of the box (10) than the second air outlet (141) is larger in the height direction of the box (10), and / or the distance between the first air outlet (131) and the door (20) is greater than the distance between the second air outlet (141) and the door (20).

2. The refrigeration equipment according to claim 1, characterized in that, The first air outlet (131) has a dimension of less than or equal to 30 mm in the height direction of the housing (10), and the second air outlet (141) has a dimension of less than or equal to 20 mm in the height direction of the housing (10).

3. The refrigeration equipment according to claim 1 or 2, characterized in that, The first air supply structure (13) has a first air inlet (133) communicating with the first air duct (11) and a first channel (132) connecting the first air inlet (133) and the first air outlet (131). The second air supply structure (14) has a second air inlet (143) communicating with the first air duct (11) and a second channel (142) connecting the second air inlet (143) and the second air outlet (141). The length of the first channel (132) extending into the storage room (3) is less than the length of the second channel (142) extending into the storage room (3).

4. The refrigeration equipment according to claim 3, characterized in that, The first air supply structure (13) includes a first upper plate (1321) and a first lower plate (1322) arranged opposite to each other, and the first channel (132) is formed between the first upper plate (1321) and the first lower plate (1322); the length of the first upper plate (1321) in the front-back direction is greater than the length of the first lower plate (1322) in the front-back direction.

5. The refrigeration equipment according to claim 4, characterized in that, The length of the first upper plate (1321) in the front-to-back direction is 5mm to 25mm; the length of the first lower plate (1322) in the front-to-back direction is 5mm to 20mm.

6. The refrigeration equipment according to any one of claims 3-5, characterized in that, The second air supply structure (14) includes a second upper plate (1421) and a second lower plate (1422) arranged opposite to each other, and the second channel (142) is formed between the second upper plate (1421) and the second lower plate (1422); the length of the second upper plate (1421) in the front-back direction is greater than the length of the second lower plate (1422) in the front-back direction.

7. The refrigeration equipment according to claim 6, characterized in that, The lengths of the second upper plate (1421) and the second lower plate (1422) in the front-to-back direction are 10mm to 35mm.

8. The refrigeration equipment according to claim 6, characterized in that, The second upper plate (1421) and / or the second lower plate (1422) are inclined toward the inside of the second air supply structure (14) and the angle between them and the horizontal direction is greater than 3°.

9. The refrigeration equipment according to claim 1, characterized in that, The housing (10) includes a first air duct cover (8), and the first air duct (11) is formed between the first air duct cover (8) and the rear wall of the inner liner (4); the first air supply structure (13) is provided with a first wing (134) facing the first air duct (11), and the second air supply structure (14) is provided with a second wing (144) facing the first air duct (11). The first air inlet (133) is formed between the first wing (134) and the first air duct cover (8), and the second air inlet (143) is formed between the second wing (144) and the first air duct cover (8).

10. The refrigeration equipment according to claim 9, characterized in that, The first wing edge (134) and the second wing edge (144) extend from the first air duct cover plate (8) toward the inside of the first air duct (11) in a curved manner. The length of the first wing edge (134) in the direction perpendicular to the first air duct cover plate (8) is greater than the length of the second wing edge (144) in the direction perpendicular to the first air duct cover plate (8).

11. The refrigeration equipment according to any one of claims 1-10, characterized in that, The first air supply structure (13) and the second air supply structure (14) are arranged in an array along the first air duct cover plate (8). The second air supply structure (14) is located in the area below 40% of the total height of the first air duct (11).

12. The refrigeration equipment according to claim 11, characterized in that, The first air duct (11) is provided with two first partitions (15) extending along the height direction of the box (10). The first partitions (15) are used to divide the first air duct (11) into three adjacent sub-air ducts (111). The air inlet area of ​​the sub-air ducts (111) located on both sides is greater than the air inlet area of ​​the sub-air duct (111) located in the middle.

13. The refrigeration equipment according to claim 12, characterized in that, The air intake area of ​​the sub-air ducts (111) located on both sides is 33% to 40% of the total air intake area of ​​the first air duct (11); the air intake area of ​​the sub-air duct (111) located in the middle is 20% to 33% of the total air intake area of ​​the first air duct (11).

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