Refrigerator

Abstract

The embodiment of the utility model belongs to the technical field of household appliances, and provides a refrigerator which comprises an inner container, an evaporation assembly, an air outlet duct and an air return duct. A refrigeration containing cavity is formed in the bottom of the inner container. The inner container is provided with a first side wall and a second side wall which are oppositely arranged in the width direction of the refrigerator. The evaporation assembly is located in the refrigeration containing cavity. The air outlet duct communicates with the air outlet end of the refrigeration containing cavity and the refrigeration chamber. The air return duct communicates with the air inlet ends of the refrigeration chamber and the refrigeration containing cavity. The air outlet ducts comprise the first air outlet duct and the second air outlet duct. The first air outlet duct is arranged on the first side wall. The second air outlet duct is arranged on the second side wall. The air outlet directions of the first air outlet duct and the second air outlet duct face the two opposite ends, in the length direction of the refrigerator, of the refrigerating chamber correspondingly. According to the refrigerator provided by the embodiment of the invention, the temperature uniformity is improved, the energy consumption of the refrigerator is reduced, the refrigeration efficiency of the refrigerator is improved, and the refrigeration effect of the refrigerator is improved.

Description

Technical Field

[0001] This application relates to the field of household appliance technology, and more particularly to a freezer. Background Technology

[0002] A freezer is a device used to store and preserve food or other items that require low-temperature preservation. It uses a refrigeration cycle system to lower and maintain the temperature inside the freezer, making it suitable for storing perishable items for extended periods.

[0003] In related technologies, freezers achieve cooling through an evaporator in their refrigeration cycle system. The evaporator is a key component of the refrigeration system; as the refrigerant evaporates in the evaporator, it absorbs heat, thereby lowering the internal temperature of the freezer. Currently, there are two ways to arrange the evaporator: one is to place it at the bottom of the freezer, and the other is to place it on the side wall. When the evaporator is placed on the side wall, the air outlet is located on the side of the freezer. When the evaporator is placed at the bottom, the air duct is located on the side wall of the door hinge, and the air outlet of the duct blows air to the left and right.

[0004] However, existing freezers have the problem of poor cooling performance. Utility Model Content

[0005] This application provides a freezer that improves temperature uniformity in different locations, reduces energy consumption, and enhances cooling performance.

[0006] In a first aspect, embodiments of this application provide a freezer, the freezer comprising:

[0007] The inner liner forms a refrigeration compartment; a door is provided at the top of the refrigeration compartment; a refrigeration receiving chamber is formed at the bottom of the inner liner; along the width direction of the freezer, the inner liner has a first side wall and a second side wall arranged opposite to each other.

[0008] The evaporator assembly is located in the refrigeration housing chamber;

[0009] The air outlet duct is located in the refrigeration room and is connected to the air outlet of the refrigeration containment chamber and the refrigeration room.

[0010] The return air duct is located in the refrigeration room and is connected to the air inlet of both the refrigeration room and the refrigeration containment chamber.

[0011] The air outlet duct includes:

[0012] The first air outlet duct is located on the first side wall;

[0013] The second air outlet duct is located on the second side wall.

[0014] The first and second air outlet ducts are directed towards opposite ends of the refrigeration compartment along the length of the freezer.

[0015] The above technical solution has the following advantages or beneficial effects: By setting the first and second air outlet ducts on different side walls of the inner liner, compared with related technologies, it avoids the problem that when both air outlet ducts are located on the same side wall, cold air may concentrate on one side of the freezer, resulting in a lower temperature on that side and a higher temperature on the side farther from the air outlet. The freezer provided in this application embodiment has two circulating air paths inside the refrigeration compartment. Along the length of the freezer, the first circulating air path circulates along one side of the length of the freezer. The second circulating air path circulates along the other side of the length of the freezer. The circulating airflow in the freezer has different flow paths, realizing the uniformity of airflow, thereby ensuring a more uniform temperature throughout the refrigeration compartment and avoiding uneven heating and cooling. In addition, by setting air outlet ducts on different side walls, the airflow circulation speed can be accelerated, reducing the time required for the freezer to reach the set temperature and improving the overall cooling efficiency.

[0016] In some embodiments of this application, along the length of the freezer, the inner liner also has a third sidewall and a fourth sidewall disposed opposite to each other.

[0017] The first air outlet duct has a first air outlet, which is configured to discharge air towards the third side wall.

[0018] The second air outlet duct has a second air outlet, which is configured to discharge air towards the fourth side wall.

[0019] The above technical solution has the following advantages or beneficial effects: The first air outlet is designed to direct airflow towards the third side wall. This means that cold air will flow towards the third side wall of the inner liner, thus covering that area. The second air outlet is designed to direct airflow towards the fourth side wall. In this way, cold air will flow towards the fourth side wall of the inner liner, covering the corresponding area. By guiding cold air towards the opposite side walls along the length, the temperature within the entire refrigeration compartment is ensured to be more uniform, avoiding uneven heating and cooling. This symmetrical air outlet design allows airflow to effectively cover the entire length of the freezer, reducing the occurrence of dead zones.

[0020] In some embodiments of this application, a plurality of first air guides are also included, which are spaced apart along the height of the freezer; a first air outlet is formed between two adjacent first air guides, and the air outlet direction is perpendicular to the plane of the third side wall.

[0021] The freezer also includes multiple second air guides, which are spaced apart along the height of the freezer; a second air outlet is formed between two adjacent second air guides, and the air outlet direction is perpendicular to the plane of the fourth side wall.

[0022] The above technical solution has the following advantages or beneficial effects: Since the freezer has a certain height, and the evaporator assembly is located at the bottom, to ensure temperature uniformity along the height of the freezer, multiple first air guides are spaced apart along the height of the freezer, forming a first air outlet between adjacent first air guides; multiple second air guides are also spaced apart along the height of the freezer, forming a second air outlet between adjacent second air guides. In this way, airflow flows vertically within the first air outlet duct and flows to the refrigeration compartment through the first air outlet formed between adjacent first air guides; airflow also flows vertically within the second air outlet duct and flows to the refrigeration compartment through the second air outlet formed between adjacent second air guides, ensuring uniform airflow throughout the entire height direction. This design helps overcome the influence of gravity on airflow, ensuring that airflow can effectively reach the upper area of ​​the freezer. The uniform vertical airflow helps reduce the temperature difference between the top and bottom of the freezer, ensuring a more uniform temperature throughout the entire interior of the freezer.

[0023] In some embodiments of this application, the first air outlet duct is further configured with a third air outlet, which is configured to discharge air toward one side of the third sidewall; the air outlet direction of the third air outlet and the air outlet direction of the first air outlet are at an angle.

[0024] The second air outlet duct also has a fourth air outlet, which is configured to discharge air towards the fourth side wall; the air outlet direction of the fourth air outlet has an angle with the air outlet direction of the second air outlet.

[0025] The above technical solution has the following advantages or beneficial effects: The first air outlet faces the third sidewall. The third air outlet also faces the third sidewall, but its outlet direction forms an angle with the outlet direction of the first air outlet. This design allows the airflow to form a more complex flow path near the third sidewall, enhancing air circulation in that area. The second air outlet faces the fourth sidewall. The fourth air outlet also faces the fourth sidewall, and its outlet direction also forms an angle with the outlet direction of the second air outlet. This configuration creates multi-directional airflow near the fourth sidewall, further improving the uniformity of airflow.

[0026] By placing multiple air outlets near the same side wall and adjusting their direction, a more complex airflow path is created, thereby enhancing air circulation. Multidirectional airflow helps eliminate temperature gradients, resulting in a more uniform temperature throughout the refrigerated room.

[0027] In some embodiments of this application, the freezer further includes a third guide member, which is disposed at a third air outlet; the third guide member extends toward the side closer to the third side wall; the angle between the direction of the third guide member to the third side wall and the first side wall is an acute angle.

[0028] The freezer also includes a fourth guide component, which is located at the fourth air outlet. The fourth guide component extends towards the side wall, and the angle between the direction of the fourth guide component to the fourth side wall and the second side wall is an acute angle.

[0029] The above technical solution has the following advantages or beneficial effects: The presence of the third guide member can effectively guide the airflow, causing it to flow along the designed path. By setting an angle between the extension direction of the third guide member and the plane containing the first side wall, the direction of the airflow can be controlled, directing the airflow towards the interior space of the freezer. The presence of the fourth guide member can effectively guide the airflow, causing it to flow along the designed path. By setting an angle between the extension direction of the fourth guide member and the plane containing the second side wall, the direction of the airflow can be controlled, directing the airflow towards the interior space of the freezer.

[0030] Furthermore, the airflow exiting through the first and second air outlets flows close to the inner wall, ensuring that the airflow covers the entire surface of the inner liner; the airflow exiting through the third and fourth air outlets flows close to the interior of the cooling compartment. This combination of airflow close to the inner wall and flowing internally creates an effective airflow circulation system, enhancing air mixing and ensuring a more uniform temperature inside the cooling compartment. This combination of airflow close to the inner wall and flowing internally helps to form an effective airflow circulation system, maximizing the utilization efficiency of cold air. Thus, along the length of the freezer, there are two airflow paths at both ends. This design allows cold air to quickly cover the entire interior of the freezer, improving the uniformity of temperature distribution in the cooling compartment, avoiding dead zones and uneven cooling, and ensuring that all items stored inside the cooling compartment receive proper cooling.

[0031] In some embodiments of this application, there are multiple third air outlets, which are spaced apart along the length of the freezer.

[0032] There are multiple fourth air outlets, spaced apart along the length of the freezer.

[0033] The above technical solution has the following advantages or beneficial effects: Multiple third and fourth air outlets are spaced apart along the length, allowing cold air to be distributed more evenly throughout the refrigeration chamber. This configuration reduces the problem of localized over- or under-cooling that might occur with a single air outlet. The combined effect of multiple air outlets ensures a more consistent temperature in each area, which is beneficial for the preservation and quality maintenance of stored items. The multiple air outlet design can accelerate the circulation of cold air, reducing the time required for the freezer to reach the set temperature.

[0034] In some embodiments of this application, the return air duct has a first return air inlet that communicates with the refrigeration chamber, the first return air inlet is provided with a return air guide, and the return air duct also has a second return air inlet that communicates with the air inlet of the refrigeration chamber.

[0035] The above technical solution has the following advantages or beneficial effects: The return air guide is used to guide airflow effectively into the return air duct. The setting of the return air guide helps to reduce airflow resistance, improve airflow recovery efficiency, enable the refrigeration chamber to reach the set temperature more quickly, and reduce energy consumption. The return air duct is connected to the refrigeration housing chamber. This ensures that the airflow can directly enter the evaporator components for recooling, forming a closed-loop air circulation system.

[0036] In some embodiments of this application, the freezer also includes an air duct cover; in the height direction of the freezer, the air duct cover and the bottom wall of the inner liner are arranged opposite to each other and surround each other to form a refrigeration chamber.

[0037] Along the width of the freezer, the air duct cover has an air return port, which is connected to the air inlet of the refrigeration chamber.

[0038] The above technical solution has the following advantages or beneficial effects: the duct cover and the bottom wall of the inner liner surround to form a refrigeration chamber, which is used to accommodate the evaporation components and guide the flow of cold air. The duct cover includes a first section and a second section connected to each other. Along the height direction of the freezer, the first section and the bottom wall of the inner liner are positioned opposite each other. The first section has a duct cover return air inlet. Along the width direction of the freezer, the middle of the first section forms the duct cover return air inlet to prevent airflow from the outlet duct from directly flowing back into the duct cover return air inlet.

[0039] In some embodiments of this application, the freezer further includes a fan and a fan guide, both of which are disposed in the refrigeration chamber.

[0040] The fan guide is located on one side of the evaporation assembly, and the fan is located on the side of the fan guide away from the evaporation assembly; the fan has a fan outlet, and the fan outlet is connected to the air outlet duct.

[0041] The fan guide is equipped with an air guide ring, which is located in the middle of the fan guide along the width of the freezer; and the middle of the fan guide protrudes outward relative to the two ends of the fan guide towards the fan.

[0042] The above technical solution has the following advantages or beneficial effects: The fan guide can be an air guide plate. The air guide plate is provided with a limiting step. The limiting step and the inner liner step are in contact. The connection method of the limiting step and the inner liner step can restrict the movement of the air guide plate along the height direction and the length direction of the freezer, thereby improving the installation stability of the fan guide. By protruding the middle part of the fan guide towards the fan from both ends, the fan guide helps to guide the airflow. The fan guide guides the airflow cooled by the evaporator assembly to the air guide ring, reducing the airflow resistance.

[0043] In some embodiments of this application, the freezer also includes an air duct connector, which is disposed on the side of the fan guide away from the evaporator assembly, and the fan is installed on the air duct cover plate through the air duct connector.

[0044] Along the height of the freezer, there is a first airflow guide area and a second airflow guide area between the air duct connector and the air duct cover; the first airflow guide area is connected to the first air outlet duct, and the second airflow guide area is connected to the second air outlet duct.

[0045] The above technical solution has the following advantages or beneficial effects: by constructing a first guide zone and a second guide zone between the air duct connector and the air duct cover, the airflow cooled by the evaporation component can flow through different guide zones to different air outlet ducts, ensuring the uniform distribution of airflow in the cooling room and reducing the temperature uniformity of the cooling room.

[0046] In some embodiments of this application, the air duct connector includes a first air duct connector and a second air duct connector; the first air duct connector and the second air duct connector are arranged sequentially along the width direction of the freezer.

[0047] The top of the first air duct connection is recessed towards the bottom of the freezer, and the top of the second air duct connection is recessed towards the bottom of the freezer; the connection between the first air duct connection and the second air duct connection protrudes outward towards the top of the freezer.

[0048] The first air duct connection, air duct cover, and fan guide components form the first airflow guiding zone; the second air duct connection, air duct cover, and fan guide components form the second airflow guiding zone.

[0049] The above technical solution has the following advantages or beneficial effects: the fan can be located in the first airflow guiding area. By setting the top of the first air duct connection and the second air duct connection to be recessed towards the bottom of the freezer, the airflow passing through the fan flows along the first airflow guiding area and the second airflow guiding area to the first air outlet duct and the second air outlet duct, respectively.

[0050] By setting the connection between the first air duct connection and the second air duct connection to a structure that protrudes outward toward the top of the freezer, it helps to avoid the mixing of airflow in the first guide zone and the second guide zone. In this way, the airflow from the fan flows along the first guide zone and the second guide zone to the first air outlet duct and the second air outlet duct, respectively.

[0051] In some embodiments of this application, the freezer further includes a first heat insulation component disposed between the evaporation assembly and the bottom wall of the inner liner.

[0052] The freezer also includes a second insulation component, which is located between the air duct cover and the evaporator assembly.

[0053] The above technical solution has the following advantages or beneficial effects: The evaporation assembly includes an evaporator and a heating wire. The evaporator is used to absorb heat to lower the temperature inside the freezer. Over time, frost may accumulate on the surface of the evaporator, which can affect its heat exchange efficiency. The heating wire is used to defrost the evaporator.

[0054] The first insulation component can be a metal insulation plate. The metal insulation plate prevents the heating wire from damaging the inner liner. The second insulation component can be insulating foam. The second insulation component prevents heat generated by the heating wire during evaporator defrosting from entering the refrigeration compartment.

[0055] Secondly, embodiments of this application provide a freezer, the freezer comprising:

[0056] The inner liner forms a refrigeration compartment; the bottom of the inner liner forms a refrigeration receiving chamber.

[0057] Evaporation unit, located in the refrigeration containment chamber.

[0058] The air outlet duct is located in the refrigeration room and is connected to the air outlet of the refrigeration containment chamber and the refrigeration room.

[0059] The return air duct is located in the refrigeration room and is connected to the refrigeration room. The return air duct has a second return air inlet and is connected to the air inlet of the refrigeration housing chamber through the second return air inlet. The second return air inlet includes a first sub-return air inlet and a second sub-return air inlet, and the air outlet directions of the first sub-return air inlet and the second sub-return air inlet intersect.

[0060] The fan is located in the refrigeration containment chamber; the fan is used to circulate the airflow in the refrigeration chamber.

[0061] The evaporation assembly includes an evaporator, which is used to absorb heat from the airflow inside the refrigerated room.

[0062] The above technical solution has the following advantages or beneficial effects: When the freezer is in cooling mode, the fan rotates at high speed, the air pressure along the fan axis is low, and the wind speed is high. This results in different wind speeds at different parts of the evaporator, leading to varying frost thickness and affecting defrosting time. By setting the air outlet directions of the first and second sub-return air inlets to be intersecting, the airflow passes through the evaporator in different directions, resulting in more uniform airflow and improved frost distribution. This helps reduce defrosting time and energy consumption. Furthermore, reduced defrosting time means the freezer can return to the set cooling temperature more quickly, improving cooling efficiency and ultimately enhancing the cooling effect.

[0063] In some embodiments of this application, the return air duct includes a first section and a second section that are connected to each other; the first section extends along the length direction of the freezer, and the second section extends along the width direction of the freezer.

[0064] The first section is located between the evaporator assembly and the inner liner, and the first return air inlet is formed between the first section and the inner wall of the inner liner. The first return air inlet is equipped with a return air guide.

[0065] The second section is located at the air inlet of the refrigeration chamber; the second section has a first sub-return air inlet and a second sub-return air inlet, the air outlet direction of the first sub-return air inlet is parallel to the fin direction of the evaporator, and the air outlet direction of the second sub-return air inlet is perpendicular to the fin direction of the evaporator.

[0066] The above technical solution has the following advantages or beneficial effects: The air outlet direction of the first sub-return air inlet is parallel to the evaporator fin direction, ensuring that the airflow can flow evenly over the fin surface. The air outlet direction of the second sub-return air inlet is perpendicular to the fin direction. In this way, airflows from different airflow paths flow to the evaporator, enhancing the air mixing effect, making the airflow within the evaporator more uniform, reducing the problem of frost layer thickness differences in different parts of the evaporator, thereby shortening defrosting time and reducing energy consumption. Consequently, the freezer can recover to the set cooling temperature more quickly, improving the freezer's cooling efficiency and thus enhancing the cooling effect. Attached Figure Description

[0067] To more clearly illustrate the implementation methods in the embodiments of this application or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0068] Figure 1 A schematic diagram of the structure of the freezer provided in the embodiments of this application. Figure 1 ;

[0069] Figure 2 A schematic diagram of the structure of the freezer provided in the embodiments of this application. Figure 2 ;

[0070] Figure 3 This is a first-view structural schematic diagram of the inner liner provided in an embodiment of this application;

[0071] Figure 4 This is a structural schematic diagram of the inner liner from a second perspective, provided in an embodiment of this application.

[0072] Figure 5 This is a schematic diagram of the structure of each component in the freezer provided in the embodiments of this application;

[0073] Figure 6 A schematic diagram of the structure of the freezer provided in the embodiments of this application. Figure 3 ;

[0074] Figure 7 A schematic diagram of the air outlet duct of the freezer provided in an embodiment of this application;

[0075] Figure 8 A schematic diagram of the structure of the air duct cover, return air duct, fan guide, etc. of the freezer provided in the embodiments of this application;

[0076] Figure 9 A schematic diagram of the return air duct of a freezer provided in an embodiment of this application;

[0077] Figure 10 A schematic diagram of the structure of the air duct cover of the freezer provided in an embodiment of this application;

[0078] Figure 11 A schematic diagram of the structure of the fan and air duct connector of the freezer provided in the embodiments of this application;

[0079] Figure 12 A first-view structural schematic diagram of the fan guide component of a freezer provided in an embodiment of this application;

[0080] Figure 13 A second-view structural schematic diagram of the fan guide component of a freezer provided in an embodiment of this application;

[0081] Figure 14 A schematic diagram of the air duct connector for a freezer provided in an embodiment of this application;

[0082] Figure 15 This is a schematic diagram of the structure of the evaporator, fan, and fan guide of the freezer provided in the embodiments of this application.

[0083] Explanation of reference numerals in the attached figures:

[0084] 10: Refrigerated display case;

[0085] 100: Inner liner; 110: First side wall; 120: Second side wall; 130: Third side wall; 140: Fourth side wall;

[0086] 200: Evaporation unit;

[0087] 300: Air outlet duct; 310: First air outlet duct; 311: First air outlet; 312: Third air outlet; 313: First air guide; 320: Second air outlet duct; 321: Second air outlet; 322: Fourth air outlet;

[0088] 400: Return air duct; 410: Return air guide; 420: First return air outlet; 430: Second return air outlet; 431: First sub-return air outlet; 432: Second sub-return air outlet;

[0089] 500: Fan; 510: Fan air guide; 511: Air guide ring; 512: Fixing plate; 513: Limiting step; 520: Duct connector; 521: First duct connection; 522: Second duct connection; 523: First guide zone; 524: Second guide zone; 525: Second limiting step; 530: Duct cover; 531: Duct cover return air inlet; 532: First plate segment; 533: Second plate segment;

[0090] 600: First heat insulation component; 610: Second heat insulation component. Detailed Implementation

[0091] In related technologies, there are two ways to arrange the evaporator in a freezer: one is to place the evaporator at the bottom of the freezer, and the other is to place the evaporator on the side wall of the freezer.

[0092] In a design where the evaporator is positioned on one side wall along the length of the freezer, the air outlet is also located on this side wall. Within the refrigeration compartment, the airflow follows a path. However, the airflow travels a longer distance away from the air outlet, resulting in greater wind speed loss and lower air velocity. Consequently, a temperature difference exists between areas near and far from the air outlet, leading to a decrease in the freezer's cooling performance.

[0093] In a design where the evaporator is located at the bottom of the freezer, the air duct is situated on the side wall of the door hinge. The air duct has two types of outlets: one facing one side along the length of the freezer, and the other facing the other side. The air duct can also have an outlet pointing towards the door handle. Ultimately, the airflow exchanges heat with the evaporator via the return air vent.

[0094] However, when different air outlets are all located on one side wall of the freezer, even if there are multiple airflow paths in the refrigeration compartment, the cold air may still concentrate on one side of the freezer, resulting in a lower temperature on that side and a higher temperature on the side away from the air outlet.

[0095] Therefore, in related technologies, there is a problem of temperature differences inside freezers.

[0096] Therefore, this application provides a freezer, which includes an inner liner, an evaporator assembly, an air outlet duct, and a return air duct. The inner liner forms a refrigeration compartment. A refrigeration receiving chamber is formed at the bottom of the inner liner. Along the width direction of the freezer, the inner liner has a first sidewall and a second sidewall disposed opposite to each other. The evaporator assembly is located in the refrigeration receiving chamber. The air outlet duct is located in the refrigeration compartment. The air outlet duct is connected to the air outlet end of the refrigeration receiving chamber and the refrigeration compartment, respectively. The return air duct is located in the refrigeration compartment and is connected to the air inlet end of the refrigeration compartment and the refrigeration receiving chamber, respectively.

[0097] The air outlet duct includes a first air outlet duct and a second air outlet duct. The first air outlet duct is located on the first side wall. The second air outlet duct is located on the second side wall. The air outlet directions of the first and second air outlet ducts are respectively directed towards opposite ends of the refrigeration compartment along the length of the freezer.

[0098] By placing the first and second air outlet ducts on different side walls of the inner liner, this design avoids the problem, compared to related technologies, where cold air might concentrate on one side of the freezer when both air outlet ducts are located on the same side, resulting in a lower temperature on that side and a higher temperature on the side farther from the air outlet. The freezer provided in this embodiment has two circulating air paths inside the refrigeration compartment. Along the length of the freezer, the first circulating air path circulates along one side of the freezer's length, while the second circulating air path circulates along the other side. The different flow paths of the circulating airflow in the freezer achieve uniform airflow, ensuring a more uniform temperature throughout the refrigeration compartment and preventing uneven heating and cooling. Furthermore, placing air outlet ducts on different side walls accelerates airflow circulation, reduces the time required for the freezer to reach the set temperature, and improves overall refrigeration efficiency.

[0099] Furthermore, researchers discovered that during the high-speed rotation of the fan, the air pressure is lower in the section along the length of the freezer where the evaporator and the fan are on the same axis. This results in inconsistent frost layers on different parts of the evaporator, leading to longer defrosting times, increased energy consumption, and reduced cooling performance.

[0100] In this embodiment, by setting the air outlet directions of the first sub-return air inlet and the second sub-return air inlet to be intersecting, the airflow passes through the evaporator in different directions, resulting in a more uniform airflow through the evaporator. This improves the uniformity of the frost layer distribution on the evaporator, which helps to reduce defrosting time and energy consumption. Reducing defrosting time means that the freezer can recover to the set cooling temperature more quickly, improving the cooling efficiency of the freezer and thus improving the cooling effect.

[0101] To make the objectives, implementation methods and advantages of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the described exemplary embodiments are only some embodiments of this application, and not all embodiments.

[0102] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0103] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclusively include, for example, a product or device that includes a series of components is not necessarily limited to those that are explicitly listed, but may include other components that are not explicitly listed or that are inherent to such product or device.

[0104] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0105] 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 technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0106] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0107] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0108] Firstly, referring to Figures 1 to 6 As shown, this application embodiment provides a freezer 10. The length direction of the freezer 10 is referenced... Figure 3 The direction indicated by X in the middle. The height direction of freezer 10 is referenced. Figure 3 The direction shown in the center Z. The width direction of freezer 10 is referenced. Figure 4 The direction shown in Y.

[0109] The freezer 10 includes an inner liner 100. The inner liner 100 effectively reduces heat exchange between the interior and exterior environments of the freezer 10. This helps maintain a low-temperature environment inside the freezer 10, improving refrigeration efficiency and saving energy. The inner liner 100 provides support and stability for the internal structure of the freezer 10. The inner liner 100 forms a refrigeration compartment. A door is provided at the top of the refrigeration compartment. The refrigeration compartment supports the installation and use of shelves, drawers, and other storage components.

[0110] The bottom of the inner liner 100 forms a refrigeration chamber. Along the width direction of the freezer 10, the inner liner 100 has a first sidewall 110 and a second sidewall 120 disposed opposite to each other.

[0111] The freezer 10 also includes an evaporator assembly 200, which is located in the refrigeration chamber. The main function of the evaporator assembly 200 is to absorb heat to lower the temperature inside the freezer 10. The working principle of the evaporator assembly 200 is based on the phase change process of the refrigerant, that is, the refrigerant absorbs heat when it changes from a liquid state to a gaseous state in the evaporator assembly 200, thereby achieving a cooling effect.

[0112] The freezer 10 also includes an air outlet duct 300, which is located in the refrigeration compartment and connects to both the air outlet of the refrigeration housing chamber and the refrigeration compartment itself. The air outlet duct 300 guides cold air from the evaporator assembly 200 into the refrigeration compartment. Through effective airflow, the air outlet duct 300 accelerates the heat exchange process inside the freezer 10. This helps to lower the temperature more quickly and improve refrigeration efficiency.

[0113] The 300mm air outlet duct includes:

[0114] The first air outlet duct 310 is installed on the first side wall 110;

[0115] The second air outlet duct 320 is installed on the second side wall 120;

[0116] The first air outlet duct 310 and the second air outlet duct 320 are respectively directed towards the opposite ends of the refrigeration compartment along the length of the freezer 10.

[0117] The freezer 10 also includes a return air duct 400, which is located in the refrigeration compartment and is connected to the air inlet of both the refrigeration compartment and the refrigeration housing chamber. The return air duct 400 is used to guide airflow back to the evaporator assembly 200.

[0118] For example, when the freezer 10 is in a cooling state, the airflow cooled by the evaporator assembly 200 flows through the air outlet of the evaporator assembly 200 to the first air outlet duct 310 and the second air outlet duct 320 respectively. Since the first air outlet duct 310 is located on the first side wall 110 and the second air outlet duct 320 is located on the second side wall 120, and the air outlet directions of the first air outlet duct 310 and the second air outlet duct 320 are respectively directed towards opposite ends of the cooling compartment along the length of the freezer 10, there are two circulating air paths inside the cooling compartment. Along the length of the freezer 10, the first circulating air path circulates along one side of the length of the freezer 10. The first circulating air path refers to... Figure 4 The direction is indicated by the solid black arrow in the middle. The second circulating air duct circulates along the other side of the length of the freezer 10. (Refer to the second circulating air duct...) Figure 4 The direction indicated by the black hollow arrow in the middle.

[0119] Each circulating air path is responsible for cooling one side of the cooling room. The airflow path is short, and the airflow speed loss during movement is small, which improves the cooling effect of the cooling room and improves the temperature uniformity of the cooling room.

[0120] By placing the first air outlet duct 310 and the second air outlet duct 320 on different side walls of the inner liner 100, compared to related technologies, this avoids the problem that when both air outlet ducts 300 are located on the same side wall, cold air may concentrate on one side of the freezer 10, resulting in a lower temperature on that side and a higher temperature on the side farther from the air outlet. The freezer 10 provided in this embodiment has two circulating air paths inside the refrigeration compartment. Along the length of the freezer 10, the first circulating air path circulates along one side of the length of the freezer 10, and the second circulating air path circulates along the other side of the length of the freezer 10. The different flow paths of the circulating air in the freezer 10 achieve uniform airflow, thereby ensuring a more uniform temperature throughout the refrigeration compartment and avoiding uneven heating and cooling. Furthermore, by placing the air outlet ducts 300 on different side walls, the airflow circulation speed can be accelerated, reducing the time required for the freezer 10 to reach the set temperature and improving overall refrigeration efficiency.

[0121] For example, both the first sidewall 110 and the second sidewall 120 of the inner liner 100 are provided with snap-fit ​​grooves. The air outlet duct 300 is connected to the inner liner 100 through snap-fits and snap-fit ​​grooves.

[0122] As one possible implementation, along the length of the freezer 10, the inner liner 100 also has a third side wall 130 and a fourth side wall 140 disposed opposite to each other.

[0123] The first air outlet duct 310 is configured to have a first air outlet 311, which is configured to discharge air toward the third side wall 130.

[0124] The second air outlet duct 320 is configured to have a second air outlet 321, which is configured to discharge air toward the fourth side wall 140.

[0125] In some embodiments, refer to Figure 4 As shown, part of the airflow flows out from the first air outlet 311 and toward the third side wall 130. After colliding with the third side wall 130, the airflow flows along the width of the freezer 10. Subsequently, the airflow collides with the second side wall 120 and flows along the length of the freezer 10. Finally, the airflow returns to the air inlet of the evaporator assembly 200 through the return air duct 400, completing a complete cycle. The air outlet direction of the first air outlet 311 can be perpendicular to the plane of the third side wall 130, so that the airflow flows along the inner side wall near the inner liner 100.

[0126] In other embodiments, reference is made to Figure 4 As shown, part of the airflow exits from the second air outlet 321 and flows towards the fourth side wall 140. After colliding with the fourth side wall 140, the airflow flows along the width of the freezer 10. Subsequently, the airflow collides with the second side wall 120 and flows along the length of the freezer 10. Finally, the airflow returns to the outlet of the evaporator assembly 200 through the return air duct 400, completing a full cycle. The airflow direction of the second air outlet 321 can be perpendicular to the plane of the fourth side wall 140, so that the airflow flows along the inner side wall near the inner liner 100.

[0127] Along the length of the freezer 10, the freezer 10 has two airflow paths. The design of the two airflow paths allows cold air to quickly cover the entire interior of the freezer 10, improving the uniformity of temperature distribution in the refrigeration compartment, avoiding dead corners and uneven cooling, and ensuring that the items stored in the refrigeration compartment are properly cooled.

[0128] As one feasible implementation, the freezer also includes a plurality of first air guides 313, which are spaced apart along the height of the freezer 10; a first air outlet 311 is formed between two adjacent first air guides 313, and the air outlet direction of the first air outlet 311 is perpendicular to the plane of the third side wall 130.

[0129] The freezer 10 also includes a plurality of second air guides, which are spaced apart along the height of the freezer 10; a second air outlet 321 is formed between two adjacent second air guides, and the air outlet direction of the second air outlet 321 is perpendicular to the plane of the fourth side wall 140.

[0130] For example, since the freezer 10 has a certain height, and the evaporator assembly 200 is located at the bottom of the freezer 10, in order to ensure the temperature uniformity of the freezer 10 in the height direction, multiple first air guides 313 are spaced apart along the height direction of the freezer 10, and a first air outlet 311 is formed between adjacent first air guides 313. In this way, the airflow flows vertically in the first air outlet duct 310 and flows into the refrigeration compartment through the first air outlet 311 formed between adjacent first air guides 313, so that the airflow can flow uniformly throughout the entire height direction. This design helps to overcome the influence of gravity on the airflow and ensures that the airflow can effectively reach the upper area of ​​the freezer 10. The uniform airflow in the vertical direction helps to reduce the temperature difference between the top and bottom of the freezer 10, ensuring a more uniform temperature throughout the entire interior of the freezer 10.

[0131] Similarly, since the freezer 10 has a certain height, and the evaporator assembly 200 is located at the bottom of the freezer 10, to ensure temperature uniformity in the height direction of the freezer 10, multiple second air guides are spaced apart along the height direction of the freezer 10, forming second air outlets 321 between adjacent second air guides. In this way, the airflow flows vertically within the second air outlet duct 320 and flows into the refrigeration compartment through the second air outlets 321 formed between adjacent second air guides, ensuring uniform airflow throughout the entire height direction. This design helps overcome the influence of gravity on airflow, ensuring that the airflow can effectively reach the upper area of ​​the freezer 10. The uniform airflow in the vertical direction helps reduce the temperature difference between the top and bottom of the freezer 10, ensuring a more uniform temperature throughout the entire interior of the freezer 10.

[0132] For example, the first air guide 313 and the second air guide can be air guide plates.

[0133] As one feasible implementation method, refer to Figure 7 As shown, the first air outlet duct 310 is also configured with a third air outlet 312, which is configured to discharge air toward the third side wall 130; the air outlet direction of the third air outlet 312 and the air outlet direction of the first air outlet 311 are at an angle.

[0134] The second air outlet duct 320 is also configured to have a fourth air outlet 322, which is configured to discharge air toward the fourth side wall 140; the air outlet direction of the fourth air outlet 322 is at an angle to the air outlet direction of the second air outlet 321.

[0135] In some embodiments, refer to Figure 4 As shown, part of the airflow flows out from the first air outlet 311 and toward the third side wall 130. After colliding with the third side wall 130, the airflow flows along the width of the freezer 10. Subsequently, the airflow collides with the second side wall 120 and flows along the length of the freezer 10. Finally, the airflow returns to the air inlet of the evaporator assembly 200 through the return air duct 400, completing a complete cycle. The air outlet direction of the first air outlet 311 can be perpendicular to the plane of the third side wall 130, so that the airflow flows along the inner side wall near the inner liner 100.

[0136] Furthermore, some airflow exits from the third air outlet 312 and flows towards the third side wall 130. After colliding with the third side wall 130, the airflow flows towards the return air duct 400. Because there is an angle between the airflow direction of the third air outlet 312 and the airflow direction of the first air outlet 311, the airflow exiting from the third air outlet 312 flows closer to the interior of the cooling room than the airflow from the first air outlet 311.

[0137] In other embodiments, reference is made to Figure 4 As shown, part of the airflow exits from the second air outlet 321 and flows towards the fourth side wall 140. After colliding with the fourth side wall 140, the airflow flows along the width of the freezer 10. Subsequently, the airflow collides with the second side wall 120 and flows along the length of the freezer 10. Finally, the airflow returns to the outlet of the evaporator assembly 200 through the return air duct 400, completing a full cycle. The airflow direction of the second air outlet 321 can be perpendicular to the plane of the fourth side wall 140, so that the airflow flows along the inner side wall near the inner liner 100.

[0138] Furthermore, some airflow exits from the fourth air outlet 322 and flows towards the fourth side wall 140. After colliding with the fourth side wall 140, the airflow flows towards the return air duct 400. Because there is an angle between the airflow direction of the second air outlet 321 and the airflow direction of the fourth air outlet 322, the airflow exiting from the fourth air outlet 322 flows closer to the interior of the cooling room than the airflow from the second air outlet 321.

[0139] By directing some airflow closer to the inner wall of the refrigeration compartment, it is ensured that the airflow covers the entire surface of the inner liner 100. By directing some airflow closer to the interior of the refrigeration compartment, the air mixing effect is enhanced, ensuring a more uniform temperature inside the compartment. This combined design of airflow closer to the inner wall and flowing inward helps to form an effective airflow circulation system, maximizing the utilization efficiency of cold air. Thus, along the length of the freezer 10, both ends have two airflow paths. This design allows cold air to quickly cover the entire interior of the freezer 10, improving the uniformity of temperature distribution within the refrigeration compartment, avoiding dead zones and uneven cooling, and ensuring that all items stored inside receive adequate cooling.

[0140] As one feasible implementation, the freezer 10 also includes a third guide member disposed at the third air outlet 312; the third guide member extends towards the side closest to the third side wall 130; the angle between the direction of the third guide member to the third side wall 130 and the first side wall 110 is an acute angle. The presence of the third guide member can effectively guide the airflow, causing it to flow along a designed path. By setting an angle between the extension direction of the third guide member and the plane containing the first side wall 110, the direction of the airflow can be controlled, directing the airflow towards the interior space of the freezer 10.

[0141] The freezer 10 also includes a fourth guide member, which is located at the fourth air outlet 322. The fourth guide member extends toward the side closer to the fourth side wall 140, and the angle between the direction of the fourth guide member to the fourth side wall 140 and the second side wall 120 is an acute angle.

[0142] The presence of the fourth guide member can effectively guide the airflow, causing it to flow along the designed path. By setting an angle between the extension direction of the fourth guide member and the plane containing the second side wall 120, the direction of the airflow can be controlled, directing the airflow towards the interior space of the freezer 10.

[0143] As one feasible implementation, there are multiple third air outlets 312, which are spaced apart along the length of the freezer 10.

[0144] There are multiple fourth air outlets 322, which are spaced apart along the length of the freezer 10.

[0145] In some embodiments, the third air outlet 312 includes a third top air outlet and a third bottom air outlet. Along the height direction of the freezer 10, the third top air outlet is located near the top of the freezer 10, and the third bottom air outlet is located near the bottom of the freezer 10. The arrangement of the third top air outlet and the third bottom air outlet facilitates airflow into the refrigeration compartment from multiple heights, forming effective air circulation and promoting uniform temperature distribution in the refrigeration compartment.

[0146] There are multiple third top air outlets, which are spaced apart along the length of the freezer 10.

[0147] There are multiple third bottom air outlets, which are spaced apart along the length of the freezer 10.

[0148] The design of multiple third top air outlets and multiple third bottom air outlets helps to improve cooling efficiency by allowing airflow to quickly cover the entire cooling room and reduce the time required for the cooling room to reach the set temperature.

[0149] Furthermore, the air outlet direction of the first air outlet 311 is perpendicular to the plane of the third side wall 130, and the air outlet direction of the third air outlet 312 forms an acute angle with the air outlet direction of the first air outlet 311. This means that the airflow of the first air outlet 311 and the third air outlet 312 forms an intersecting or converging flow path inside the cooling room. This airflow interaction helps to form an effective air circulation pattern in the cooling room and improve the temperature uniformity of the cooling room.

[0150] In some embodiments, the fourth air outlet 322 includes a fourth top air outlet and a fourth bottom air outlet. Along the height direction of the freezer 10, the fourth top air outlet is located near the top of the freezer 10, and the fourth bottom air outlet is located near the bottom of the freezer 10. The arrangement of the fourth top air outlet and the fourth bottom air outlet facilitates airflow into the refrigeration compartment from multiple heights, forming effective air circulation and promoting uniform temperature distribution within the refrigeration compartment.

[0151] There are multiple fourth top air outlets, which are spaced apart along the length of the freezer 10.

[0152] There are multiple fourth bottom air outlets, which are spaced apart along the length of the freezer 10.

[0153] The design of multiple fourth top air outlets and multiple fourth bottom air outlets helps to improve cooling efficiency by allowing airflow to quickly cover the entire cooling room and reduce the time required for the cooling room to reach the set temperature.

[0154] Furthermore, the air outlet direction of the second air outlet 321 is perpendicular to the plane of the fourth side wall 140, and the air outlet direction of the fourth air outlet 322 forms an acute angle with the air outlet direction of the second air outlet 321. This means that the airflow of the second air outlet 321 and the fourth air outlet 322 forms an intersecting or converging flow path inside the cooling room. This airflow interaction helps to form an effective air circulation pattern in the cooling room and improve the temperature uniformity of the cooling room.

[0155] For example, the third and fourth air guides can be air guide plates.

[0156] As one feasible implementation, the return air duct 400 has a first return air inlet 420, which is connected to the refrigeration chamber. The first return air inlet 420 is provided with a return air guide 410. The return air duct 400 also has a second return air inlet 430, which is connected to the air inlet of the refrigeration chamber.

[0157] Reference Figure 5 , Figure 8 , Figure 9 As shown, there are at least two return air ducts 400. Along the width of the freezer 10, at least two return air ducts 400 are respectively located at opposite ends of the evaporator assembly 200. This symmetrical distribution of the two return air ducts 400 at opposite ends of the evaporator assembly 200 helps to balance the airflow inside the freezer 10 within the refrigeration compartment. The arrangement of the return air ducts 400 effectively recovers airflow within the refrigeration compartment, enhancing overall air circulation. This helps to improve the cooling efficiency of the freezer 10.

[0158] The first return air inlet 420 of the return air duct 400 is equipped with a return air guide 410, which guides airflow effectively into the return air duct 400. The return air guide 410 helps reduce airflow resistance, improves airflow recovery efficiency, and allows the refrigerated compartment to reach the set temperature more quickly, reducing energy consumption. The second return air inlet 430 of the return air duct 400 is connected to the air inlet of the refrigeration housing chamber. The air outlet of the return air duct 400 is connected to the air inlet of the evaporator assembly 200. This ensures that the return air can directly enter the evaporator assembly 200 for recooling, forming a closed-loop air circulation system.

[0159] As one possible implementation, the freezer also includes an air duct cover 530; in the height direction of the freezer 10, the air duct cover 530 and the bottom wall of the inner liner 100 are arranged opposite to each other and surround each other to form a refrigeration chamber.

[0160] Along the width of the freezer 10, the air duct cover 530 forms an air duct cover return air inlet, which is connected to the air inlet of the refrigeration chamber.

[0161] For example, the bottom of the inner liner 100 is formed with a step. This creates a structural height difference at the bottom of the inner liner 100. The bottom of the step is used to house the drip tray and drain pipe. During the refrigeration process, the evaporator causes moisture in the air to condense into water droplets, and this condensate needs to be effectively collected and drained. The drip tray collects the condensate dripping from the evaporator, preventing moisture from accumulating inside the freezer 10. The drain pipe connects to the drip tray to guide the collected condensate out of the freezer 10. A well-designed drainage system ensures that condensate is effectively drained, preventing moisture accumulation inside the equipment and avoiding freezing or mold growth. By forming a step at the bottom of the inner liner 100, space can be cleverly utilized, allowing the drip tray and drain pipe to be placed in a location that does not affect storage space. This design not only saves space but also maintains the neatness and functionality of the interior of the freezer 10.

[0162] Exemplarily, the duct cover 530 and the steps surround to form a cooling containment chamber for accommodating the evaporation assembly 200 and guiding the flow of cold air. The duct cover 530 includes a first section 532 and a second section 533 connected to each other.

[0163] Along the height direction of the freezer 10, the first panel 532 and the step of the inner liner 100 are arranged opposite each other. The first panel 532 is provided with an air duct cover return air inlet 531. Among them, along the width direction of the freezer 10, the side of the first panel 532 opposite to the first air outlet duct 310 forms an air duct cover return air inlet 531 to prevent the airflow blown by the air outlet duct 300 from directly flowing back into the air duct cover return air inlet 531.

[0164] The duct cover 530 is connected to the inner liner 100 by screws. Along the width direction of the freezer 10, the duct cover 530 has duct mounting holes at both ends for installing the return air duct 400.

[0165] As one feasible implementation, the freezer also includes a fan 500 and a fan guide 510, both of which are located in the refrigeration chamber.

[0166] The fan guide 510 is located on one side of the evaporation assembly 200, and the fan 500 is located on the side of the fan guide 510 away from the evaporation assembly 200; the fan 500 has a fan outlet, and the fan outlet is connected to the air outlet duct 300.

[0167] The fan guide 510 is provided with a guide ring 511. Along the width direction of the freezer 10, the guide ring 511 is located in the middle of the fan guide 510; and the middle part of the fan guide 510 protrudes outward relative to the two ends of the fan guide 510 towards the side closer to the fan 500.

[0168] For example, refer to Figures 10 to 13As shown, the duct cover 530 is equipped with a fan mounting post. The fan 500 is mounted on the duct cover 530 with screws. The fan 500 is used to drive the airflow from the evaporator assembly 200 to the outlet duct 300, promoting air circulation inside the freezer 10. By promoting airflow, the fan 500 can ensure that the cold air is evenly distributed throughout the freezer 10, avoiding uneven temperature distribution.

[0169] For example, the fan guide 510 can be a guide plate. The guide plate is provided with a limiting step 513. The limiting step 513 contacts the step of the inner liner 100. The connection between the limiting step 513 and the step of the inner liner 100 can limit the movement of the guide plate along the height direction and the length direction of the freezer 10, thereby improving the installation stability of the fan guide 510.

[0170] Furthermore, by having the middle part of the fan guide 510 protrude outward toward the side closer to the fan 500 relative to both ends of the fan guide 510, the fan guide 510 helps to guide the airflow. The fan guide 510 guides the airflow cooled by the evaporation assembly 200 to the air guide ring 511, reducing the resistance to airflow.

[0171] For example, along the width direction of the freezer 10, the fan guide 510 has mounting holes for the return air duct 400 at both ends for mounting the return air duct 400. Along the width direction of the freezer 10, the fan guide 510 also has fixing plates 512 at both ends. Along the height direction of the freezer 10, the mounting holes for the return air duct 400 are located in the middle of the fixing plates 512.

[0172] In some embodiments, the airflow cooled by the evaporation assembly 200 flows toward the fan guide 510, which guides the airflow and reduces the flow resistance. The airflow flows through the guide ring 511 to the fan 500, and then the airflow is accelerated by the fan 500 before flowing through the air outlet duct 300 to the cooling room to cool the cooling room.

[0173] The diameter of the air guide ring 511 is related to the air duct resistance and the structure of the fan 500. This application does not limit the specific dimensions of the air guide ring 511.

[0174] As one possible implementation, the freezer 10 also includes an air duct connector 520, which is disposed on the side of the fan guide 510 away from the evaporation assembly 200, and the fan 500 is mounted on the air duct cover 530 through the air duct connector 520.

[0175] Along the height direction of the freezer 10, a first guide zone 523 and a second guide zone 524 are constructed between the air duct connector 520 and the air duct cover 530; the first guide zone 523 is connected to the first air outlet duct 310, and the second guide zone is connected to the second air outlet duct 324.

[0176] For example, refer to Figure 14 As shown, the duct connector 520 is provided with a fan mounting hole, through which the fan 500 is mounted on the duct cover plate 530. The duct connector 520 has a second limiting step 525. The second limiting step 525 is correspondingly provided with the limiting step 513 of the fan guide 510 to limit the position of the duct connector 520, improve the structural stability of the duct connector 520, and thus improve the installation stability of the fan 500.

[0177] The air duct connector 520 is installed inside the fixing plate 512 of the fan guide 510.

[0178] For example, the return air duct 400 is installed at the duct mounting holes of the fan guide 510 and the duct connector 520. The fan guide 510 and the duct connector 520 restrict the movement of the return air duct 400 along the length direction and the height direction of the freezer 10. The return air duct 400 can be connected and fixed to the inner liner 100 by means of clips or screws. The return air duct 400 is tightly fitted to the inner liner 100 by the squeezing action of the fan guide 510 and the duct connector 520.

[0179] By constructing a first guide zone 523 and a second guide zone 524 between the duct connector 520 and the duct cover 530, the airflow cooled by the evaporation assembly 200 can flow through different guide zones to different air outlet ducts, ensuring uniform distribution of airflow in the cooling room and reducing temperature uniformity in the cooling room.

[0180] For example, the duct connector 520 can be a fan foam.

[0181] As one feasible implementation, the air duct connector 520 includes a first air duct connector 521 and a second air duct connector 522; the first air duct connector 521 and the second air duct connector 522 are arranged sequentially along the width direction of the freezer 10.

[0182] The top of the first air duct connection 521 is recessed towards the bottom of the freezer 10, and the top of the second air duct connection 522 is recessed towards the bottom of the freezer 10; the connection between the first air duct connection 521 and the second air duct connection 522 protrudes outward towards the top of the freezer 10.

[0183] The first air duct connection 521, the air duct cover plate 530, and the fan guide 510 form a first airflow guiding zone 523; the second air duct connection 522, the air duct cover plate 530, and the fan guide 510 form a second airflow guiding zone 524.

[0184] For example, the fan 500 may be located in the first guide zone 523. By setting the top of the first air duct connection 521 and the second air duct connection 522 to be recessed towards the bottom of the freezer 10, the airflow passing through the fan 500 flows along the first guide zone 523 and the second guide zone 524 to the first air outlet duct 310 and the second air outlet duct 320, respectively.

[0185] By setting the connection between the first air duct connection 521 and the second air duct connection 522 to a structure that protrudes outward toward the top of the freezer 10, it helps to avoid the mixing of airflow in the first guide zone 523 and the second guide zone 524. In this way, the airflow from the fan 500 flows along the first guide zone 523 and the second guide zone 524 to the first air outlet duct 310 and the second air outlet duct 320, respectively.

[0186] As one possible implementation, the freezer 10 also includes a first heat insulation element 600, which is disposed between the evaporation assembly 200 and the bottom wall of the inner liner 100.

[0187] For example, the evaporation assembly 200 includes an evaporator and a heating wire. The evaporator is used to absorb heat to lower the temperature inside the freezer 10. Over time, frost may accumulate on the surface of the evaporator, which can affect its heat exchange efficiency. The heating wire is used to defrost the evaporator.

[0188] The first heat insulation element 600 can be a metal heat insulation plate. The metal heat insulation plate is used to prevent the heating wire from damaging the inner tank 100.

[0189] In some embodiments, the freezer 10 further includes a second heat insulation member 610, which is disposed between the air duct cover 530 and the evaporation assembly 200.

[0190] For example, the second insulation element 610 can be insulation foam. The second insulation element 610 is used to prevent the heat generated by the heating wire during evaporator defrosting from entering the refrigeration compartment.

[0191] Furthermore, referring to Figure 5 , Figure 9 and Figure 15As shown, this application embodiment provides a freezer 10, which includes an inner liner 100. The inner liner 100 effectively reduces heat exchange between the interior and exterior environments of the freezer 10. This helps maintain a low-temperature environment inside the freezer 10, improves refrigeration efficiency, and saves energy. The inner liner 100 provides support and stability for the internal structure of the freezer 10. The inner liner 100 forms a refrigeration compartment. The refrigeration compartment supports the installation and use of shelves, drawers, and other storage components.

[0192] The bottom of the inner liner 100 has a cooling and refrigeration chamber.

[0193] The freezer 10 also includes an evaporator assembly 200. The evaporator assembly 200 is located in the refrigeration compartment; it includes an evaporator that absorbs heat from the airflow within the refrigeration compartment. The primary function of the evaporator is to absorb heat to lower the internal temperature of the freezer 10. The evaporator operates based on the phase change process of the refrigerant; that is, the refrigerant absorbs heat when it changes from a liquid to a gaseous state in the evaporator assembly 200, thereby achieving a cooling effect.

[0194] The freezer 10 also includes an air outlet duct 300. The air outlet duct 300 is located in the refrigeration compartment and connects to both the air outlet of the refrigeration housing chamber and the refrigeration compartment itself. The air outlet duct 300 guides cold air from the evaporator assembly 200 into the refrigeration compartment. Through effective airflow, the air outlet duct 300 accelerates the heat exchange process inside the freezer 10. This helps to lower the temperature more quickly and improve refrigeration efficiency.

[0195] The freezer 10 also includes a return air duct 400. The return air duct 400 is located in the refrigeration compartment and is connected to the refrigeration compartment. The return air duct has a second return air inlet 430, which is connected to the air inlet of the refrigeration housing chamber. The return air duct 400 is used to guide airflow back to the evaporator assembly 200.

[0196] The second return air vent 430 includes a first sub-return air vent 431 and a second sub-return air vent 432, and the air outlet directions of the first sub-return air vent 431 and the second sub-return air vent 432 intersect.

[0197] The freezer 10 also includes a fan 500. The fan 500 is located in the refrigeration compartment. The fan 500 is used to circulate airflow in the refrigeration compartment.

[0198] The evaporator has fins. The fins of the evaporator greatly increase the surface area of ​​the evaporator, thereby improving heat exchange efficiency. By increasing the surface area in contact with the air, the fins can absorb heat from the air more effectively, allowing the refrigerant to evaporate more quickly.

[0199] When the freezer 10 is in cooling mode, the fan rotates at high speed, resulting in lower air pressure and higher airflow speed along the fan 500 axis. This causes varying airflow speeds at different parts of the evaporator, leading to different frost thicknesses and affecting defrosting time. By setting the airflow directions of the first sub-return air vent 431 and the second sub-return air vent 432 to be intersecting, the airflow passes through the evaporator in different directions, resulting in more uniform airflow and improved frost distribution. This helps reduce defrosting time and energy consumption. Furthermore, reduced defrosting time means the freezer 10 can return to the set cooling temperature more quickly, improving its cooling efficiency and overall cooling effect.

[0200] As one feasible implementation, the return air duct 400 includes a first section and a second section that are connected to each other; the first section extends along the length direction of the freezer 10, and the second section extends along the width direction of the freezer 10.

[0201] The first section is positioned between the evaporator assembly 200 and the inner liner 100, forming a first return air inlet 420 between the first section and the side wall of the inner liner 100. The first return air inlet 420 is equipped with a return air guide component 410. Internal air is guided into the return air duct 400 through the first return air inlet 420. This design ensures that the air inside the freezer 10 can be effectively recycled and recooled. The return air guide component 410 helps guide air into the duct more efficiently, reducing airflow resistance and ensuring smooth and efficient airflow.

[0202] The second section is located at the air inlet of the refrigeration chamber; the second section has a first sub-return air inlet 431 and a second sub-return air inlet 432. The air outlet direction of the first sub-return air inlet 431 is parallel to the fin direction of the evaporator, and the air outlet direction of the second sub-return air inlet 432 is perpendicular to the fin direction of the evaporator.

[0203] The first sub-return air vent 431 has its air outlet direction parallel to the evaporator fin direction, ensuring that the airflow can flow evenly over the fin surface. The second sub-return air vent 432 has its air outlet direction perpendicular to the fin direction. In this way, airflows from different paths flow to the evaporator, enhancing the air mixing effect and making the airflow within the evaporator more uniform. This reduces the problem of frost layer thickness differences in different parts of the evaporator, thereby shortening defrosting time and reducing energy consumption. Consequently, the freezer can return to the set cooling temperature more quickly, improving the freezer's cooling efficiency and thus enhancing the cooling effect.

[0204] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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 or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0205] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the embodiments and various different variations of embodiments suitable for specific application considerations.

Claims

1. A freezer, characterized in that, The freezer includes: The inner liner (100) has a refrigeration compartment; a door is provided on the top of the refrigeration compartment; a refrigeration receiving chamber is formed at the bottom of the inner liner (100); along the width direction of the freezer, the inner liner (100) has a first side wall (110) and a second side wall (120) arranged opposite to each other. An evaporation assembly (200) is located in the refrigeration containment chamber; An air outlet duct (300) is located in the refrigeration chamber, and the air outlet duct (300) is connected to the air outlet end of the refrigeration containment chamber and the refrigeration chamber respectively; the air outlet duct (300) includes: The first air outlet duct (310) is installed on the first side wall (110); The second air outlet duct (320) is installed on the second side wall (120); The first air outlet duct (310) and the second air outlet duct (320) are respectively directed toward the opposite ends of the refrigeration compartment along the length of the freezer. The return air duct (400) is located in the refrigeration room and is connected to the air inlet of the refrigeration room and the refrigeration containment chamber, respectively.

2. The freezer according to claim 1, characterized in that, Along the length of the freezer, the inner liner (100) also has a third side wall (130) and a fourth side wall (140) disposed opposite to each other; The first air outlet duct (310) is configured to have a first air outlet (311), which is configured to discharge air toward the third side wall (130); The second air outlet duct (320) is configured to have a second air outlet (321), which is configured to discharge air toward the fourth side wall (140).

3. The freezer according to claim 2, characterized in that, It also includes multiple first air guides (313), which are spaced apart along the height of the freezer; a first air outlet (311) is formed between two adjacent first air guides (313), and the air outlet direction of the first air outlet (311) is perpendicular to the plane of the third side wall (130); The freezer also includes a plurality of second air guides, which are spaced apart along the height of the freezer; a second air outlet (321) is formed between two adjacent second air guides, and the air outlet (321) is perpendicular to the plane of the fourth side wall (140).

4. The freezer according to claim 2, characterized in that, The first air outlet duct (310) is also configured with a third air outlet (312), which is configured to discharge air toward the third side wall (130); the air outlet direction of the third air outlet (312) and the air outlet direction of the first air outlet (311) are at an angle. The second air outlet duct (320) is also constructed with a fourth air outlet (322), which is configured to discharge air toward the fourth side wall (140); the air outlet direction of the fourth air outlet (322) is at an angle to the air outlet direction of the second air outlet (321).

5. The freezer according to claim 4, characterized in that, It also includes a third guide member, which is disposed at the third air outlet (312); the third guide member extends toward the side closer to the third sidewall (130); the angle between the direction of the third guide member to the third sidewall (130) and the first sidewall (110) is an acute angle; The freezer also includes a fourth guide component, which is disposed at the fourth air outlet (322); The fourth guide extends toward the side closer to the fourth sidewall (140), and the angle between the direction of the fourth guide to the fourth sidewall (140) and the second sidewall (120) is an acute angle.

6. The freezer according to any one of claims 1-5, characterized in that, It also includes the duct cover (530); In the height direction of the freezer, the bottom walls of the air duct cover (530) and the inner liner (100) are arranged opposite to each other and surround each other to form the refrigeration chamber; Along the width direction of the freezer, the air duct cover (530) is formed with an air duct cover return air inlet (531), which is connected to the air inlet of the refrigeration chamber.

7. The freezer according to claim 6, characterized in that, It also includes a fan (500) and a fan guide (510), both of which are located in the cooling containment chamber; A fan guide (510) is disposed on one side of the evaporation assembly (200), and a fan (500) is disposed on the side of the fan guide (510) away from the evaporation assembly (200); the fan (500) has a fan outlet, and the fan outlet is connected to the air outlet duct (300); The fan guide (510) is provided with a guide ring (511). Along the width direction of the freezer, the guide ring (511) is located in the middle of the fan guide (510); and the middle of the fan guide (510) protrudes outward toward the side closer to the fan (500) relative to the two ends of the fan guide (510).

8. The freezer according to claim 6, characterized in that, It also includes a duct connector (520), which is located on the side of the fan guide (510) away from the evaporation assembly (200), and the fan (500) is installed on the duct cover (530) through the duct connector (520); Along the height direction of the freezer, a first guide zone (523) and a second guide zone (524) are constructed between the air duct connector (520) and the air duct cover (530); the first guide zone (523) is connected to the first air outlet duct (310), and the second guide zone (524) is connected to the second air outlet duct (320).

9. A freezer, characterized in that, The freezer includes: The inner liner (100) has a refrigeration chamber; the bottom of the inner liner (100) has a refrigeration receiving chamber. An evaporation assembly (200) is located in the refrigeration containment chamber; the evaporation assembly (200) includes: An evaporator for absorbing heat from the airflow inside the refrigerated room; An air outlet duct (300) is located in the refrigeration chamber, and the air outlet duct (300) is connected to the air outlet end of the refrigeration containment chamber and the refrigeration chamber respectively; A return air duct (400) is located in the refrigeration chamber and is connected to the refrigeration chamber; the return air duct (400) has a second return air inlet (430) and is connected to the air inlet end of the refrigeration chamber through the second return air inlet (430); the second return air inlet (430) includes a first sub-return air inlet (431) and a second sub-return air inlet (432), and the air outlet directions of the first sub-return air inlet (431) and the second sub-return air inlet (432) intersect; a fan (500) is located in the refrigeration chamber; the fan (500) is used to circulate the airflow in the refrigeration chamber.

10. The freezer according to claim 9, characterized in that, The return air duct (400) includes a first section and a second section that are interconnected. The first segment extends along the length of the freezer, and the second segment extends along the width of the freezer. The first section is disposed between the evaporation component (200) and the inner liner (100), and a first return air inlet (420) is formed between the first section and the inner wall of the inner liner (100). The first return air inlet (420) is provided with a return air guide (410). The second section is located at the air inlet of the refrigeration chamber; the second section has a first sub-return air inlet (431) and a second sub-return air inlet (432), the air outlet direction of the first sub-return air inlet (431) is parallel to the fin direction of the evaporator, and the air outlet direction of the second sub-return air inlet (432) is perpendicular to the fin direction of the evaporator.

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