Refrigerator

Abstract

The application relates to the technical field of refrigerators, in particular to a refrigerator. The refrigerator comprises a cabinet body, a refrigeration assembly and an air duct, the cabinet body comprises a cavity, an air inlet, an air outlet and a drainage port which are communicated with the cavity, and the cavity is used for storing articles; the refrigeration assembly is arranged on the cabinet body and located outside the cavity, the refrigeration assembly is communicated with the air inlet, the refrigeration assembly comprises a fan and an evaporator, the fan is used for forming circulating air flow, and the evaporator is used for providing cold energy; the air duct comprises communicated first, second and third flow paths, a first inlet of the first flow path is communicated with the refrigeration assembly, the drainage port forms an inlet of the second flow path, a first outlet of the first flow path and a second outlet of the second flow path jointly form an inlet of the third flow path, and the air outlet forms an outlet of the third flow path. The application can improve the total circulating amount of air in the cabinet under the premise of keeping the performance of the fan unchanged, and realizes the technical effects of reducing the cost of the refrigerator and improving the energy-saving and environment-friendly performance of the refrigerator.

Description

Technical Field

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

[0002] Air-cooled horizontal cabinets are important equipment in modern cold chain storage. They achieve uniform and stable temperature inside the cabinet through forced convection circulation. Their working principle relies on a fan to drive the air inside the cabinet to flow through the evaporator for heat exchange. The cooled air is then sent back into the cabinet cavity, and so on.

[0003] In related technologies, the air intake duct and exhaust duct of the air-cooled cabinet are set independently. Specifically, the fan draws air from the bottom of the cabinet through the air intake duct, and after the airflow is cooled by the evaporator, it is sent into the cabinet through the exhaust duct at the top.

[0004] However, the total amount of air circulating inside the cabinet depends entirely on the air volume of the fan. In order to achieve ideal temperature uniformity, it is often necessary to configure a fan with greater power or higher performance, which leads to technical problems such as high fan cost and high fan energy consumption in air-cooled horizontal cabinets. Utility Model Content

[0005] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, this application provides a freezer.

[0006] This application provides a freezer, which includes: a cabinet, the cabinet body including a cavity, and an air inlet, an air outlet and a drain outlet communicating with the cavity, the cavity being used to store items; a refrigeration component, disposed in the cabinet body and located outside the cavity, the refrigeration component communicating with the air inlet, the refrigeration component including a fan and an evaporator, the fan being used to form a circulating airflow, the evaporator being used to provide cooling capacity; and an air duct including a first flow path, a second flow path and a third flow path communicating with each other, the first inlet of the first flow path communicating with the refrigeration component, the drain outlet forming the inlet of the second flow path, the first outlet of the first flow path and the second outlet of the second flow path jointly forming the inlet of the third flow path, and the air outlet forming the outlet of the third flow path.

[0007] The air duct proposed in this application comprises two parts: a main airflow that flows through the fan and evaporator and ultimately merges into the evaporator via the first flow path (the size of this flow is related to the fan's performance), and an ejector airflow that is drawn in via the second flow path through the Venturi effect. This increases the total air circulation within the freezer while maintaining fan performance, or in other words, it allows for a reduction in fan configuration or power while meeting the required total circulation volume. This solves the technical problems of high fan cost and high energy consumption in related technologies, achieving the technical effect of reducing freezer costs and improving the freezer's energy-saving and environmentally friendly performance.

[0008] In some embodiments, the first outlet and the second outlet are arranged side by side.

[0009] By placing the first and second outlets side by side, the inertia of the airflow can be used to block the main airflow from directly entering the second flow path. This ensures that the low-pressure environment at the inlet of the second flow path is mainly generated by the Venturi effect and is primarily used to extract air from the cavity, rather than being backflowed by the main airflow. This achieves the technical effect of improving the stability and reliability of the second flow path's extraction effect and reducing the failure rate of the extraction function.

[0010] In some embodiments, in the height direction of the freezer, the third flow path is located above the first and second flow paths, and the outlet is located below the first flow path.

[0011] By defining the aforementioned positional distribution, an air circulation path is established along the height of the freezer. This promotes forced convection and mixing of air within the cavity along the height, thereby improving the technical defects of significant temperature differences and uneven temperature distribution inside the freezer, and ultimately solving the technical problems of uneven cold distribution and poor cooling effect in related technologies.

[0012] In some embodiments, the first flow path extends along the length of the freezer, and the second and third flow paths extend along the height of the freezer.

[0013] By defining the extension directions of the aforementioned flow paths, a large-area cooling circulation system is formed. The horizontally extending first flow path is responsible for the lateral distribution of cooling energy, reducing the temperature difference between the left and right areas inside the cabinet; while the vertically extending second and third flow paths enhance the vertical air agitation and cooling energy distribution, reducing the temperature difference between the top and bottom. This achieves the technical effects of improving the uniformity of temperature distribution within the cavity, improving the uniformity of cooling energy distribution, and improving cooling performance.

[0014] In some embodiments, the first flow path and the second flow path are distributed along the width direction of the freezer.

[0015] The side-by-side distribution across the width can guide the airflow direction through the flow path arrangement. Utilizing the inertia of the main airflow, a barrier is established, reducing the possibility of the main airflow laterally entering the second flow path. This ensures the stability of the pressure field in the inlet region of the second flow path, guaranteeing the reliable operation of the Venturi ejection effect. Thus, while meeting the requirements of increased circulating air volume and improved temperature uniformity, the stability of the duct function is enhanced.

[0016] In some embodiments, there is one first flow path and multiple third flow paths, which are spaced apart. One first flow path is connected to multiple third flow paths through multiple first outlets. The number of second flow paths is the same as the number of third flow paths, and the second flow paths correspond one-to-one with the third flow paths.

[0017] By setting up multiple spaced third flow paths and their corresponding second flow paths, multiple independent, spaced circulation units are established within the cabinet. This layout allows temperature-regulated mixed airflow to be simultaneously delivered from multiple different locations within the cabinet space, expanding the coverage area of ​​the cooling capacity, reducing dead zones in temperature control, and thus achieving the technical effect of improving the uniformity of temperature distribution inside the cavity and enhancing cooling performance.

[0018] In some embodiments, multiple third flow paths are evenly distributed along the length of the freezer.

[0019] When the airflow exits from these uniformly distributed third flow paths, the cooling area and energy circulation field formed in the cavity also exhibit a uniform distribution along the length direction, thereby avoiding energy concentration in a certain local area, reducing the probability of a cooling blind zone, and thus achieving the technical effect of improving the uniformity of temperature distribution inside the cavity and improving cooling performance.

[0020] In some embodiments, a flow straightening rib is provided in the first flow path. The flow straightening rib is located on the upwind side of two adjacent first outlets. The flow straightening rib includes a first flow straightening surface and a second flow straightening surface. The first flow straightening surface extends toward the first outlet located on the upwind side, and the second flow straightening surface extends toward the first outlet located on the leeward side.

[0021] The rectifier ribs reduce the probability that the main airflow will concentrate at a certain first outlet due to inertial impact, and promote the airflow to be distributed more evenly to multiple first outlets. This makes the airflow distributed to each first outlet more balanced, thereby ensuring the consistency of the Venturi ejection effect generated at multiple third flow path inlets, and thus achieving the technical effect of improving the uniformity of energy distribution and the uniformity of cavity temperature distribution.

[0022] In some embodiments, the air outlet and the air drain are located on the side wall of the cavity. The air duct includes a housing and a partition. The housing is fastened to the outside of the side wall. The housing includes a first region and a second region. The thickness of the first region is greater than the thickness of the second region. The partition is located between the first region and the side wall and is connected to the second region. The partition and the first region enclose a first flow path and a first outlet. The partition, the second region, and the side wall enclose a second flow path and a second outlet. The first region and the side wall enclose a third flow path.

[0023] The design, in which the shell, partitions, and cabinet sidewalls are assembled to form various flow paths, provides a simple, reliable, and easy-to-manufacture structural form. This achieves the technical effect of making reasonable use of the inherent structure of the cavity, reducing the complexity of the air duct structure, and reducing the material and processing costs of the air duct.

[0024] In some embodiments, the air ducts include two ducts, which are symmetrically arranged on opposite sides of the cavity.

[0025] The two air ducts operate independently and synchronously. Each duct delivers the main airflow from the cooling components through its first flow path and, utilizing the Venturi effect, draws air from the cavity through its second flow path from the inlet on the same side. This achieves forced convection and uniform mixing of air within the cavity in the horizontal direction, improving the uniformity of temperature distribution within the cabinet, especially on the horizontal plane. Simultaneously, the dual-sided ejection structure enhances overall circulation efficiency, reducing the performance requirements of the fan when meeting higher circulation demands. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of the freezer described in the embodiment of this application;

[0029] Figure 2 This is a schematic diagram of the structure of the freezer described in the embodiment of this application;

[0030] Figure 3 This is a schematic diagram of the structure of the freezer described in the embodiment of this application;

[0031] Figure 4 This is a schematic diagram of the structure of the freezer described in the embodiment of this application;

[0032] Figure 5 This is a schematic diagram of the air duct structure of the freezer described in the embodiments of this application;

[0033] Figure 6 This is a schematic diagram of the structure of the freezer described in the embodiment of this application;

[0034] Figure 7 This is an exploded view of the air duct of the freezer described in the embodiments of this application;

[0035] Figure 8 This is a schematic diagram of the air duct structure of the freezer described in the embodiments of this application;

[0036] Figure 9 This is a schematic diagram of the air duct structure of the freezer described in the embodiments of this application;

[0037] Figure 10 This is a schematic diagram of the air duct structure of the freezer described in the embodiment of this application.

[0038] in:

[0039] 100-Refrigerator; 1-Cabinet body; 11-Cavity; 111-Side wall; 12-Air inlet; 13-Air outlet; 14-Drainage outlet; 2-Refrigeration component; 21-Fan; 22-Evaporator; 3-Air duct; 31-First flow path; 311-First outlet; 32-Second flow path; 321-Second outlet; 33-Third flow path; 34-Rectifying rib; 341-First rectifying surface; 342-Second rectifying surface; 35-Shell; 351-First area; 352-Second area; 36-Baffle; X-Length direction; Y-Width direction; Z-Height direction. Detailed Implementation

[0040] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0041] Many specific details are set forth in the following description in order to provide a full understanding of this application, but this application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this application, and not all embodiments.

[0042] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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.

[0043] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0044] 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 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.

[0045] Air-cooled cabinets are key equipment in modern commercial and household cold chain storage. Their core is to create active forced convection through a fan, which drives the air inside the cabinet to continuously flow through the evaporator to complete heat exchange, thereby achieving internal temperature control and uniform distribution of cooling capacity.

[0046] In related technologies, the air intake duct and exhaust duct of the air-cooled cabinet are set up independently. Specifically, the air is drawn from the bottom of the cabinet through the air intake duct by a fan. After the airflow is cooled by the evaporator, it is sent into the cabinet through the exhaust duct at the top.

[0047] This design, which separates the intake and exhaust ducts and forces all airflow through the evaporator, means that the total amount of air circulating inside the cabinet depends entirely on and is limited by the fan's airflow. To achieve ideal temperature uniformity or ideal total airflow, a more powerful or higher-performance fan is required. However, high-performance fans are more expensive and generally have high energy consumption, resulting in technical problems such as high fan cost and high fan energy consumption in related technologies.

[0048] Meanwhile, the concentrated supply of all low-temperature airflow can easily lead to excessively low temperatures in the upper part of the cabinet and excessively high temperatures in the middle and lower parts, making it difficult to achieve rapid and balanced temperature distribution. Therefore, the related technology still suffers from the technical problem of uneven cold distribution and poor cooling effect.

[0049] To solve the above-mentioned technical problems, this application combines Figures 1 to 10 A freezer 100 was proposed.

[0050] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the freezer 100 provided in this embodiment includes: a cabinet 1, which includes a cavity 11 and an air inlet 12, an air outlet 13, and a drain outlet 14 communicating with the cavity 11. The cavity 11 is used to store items. A refrigeration component 2 is disposed in the cabinet 1 and located outside the cavity 11. The refrigeration component 2 is connected to the air inlet 12 and includes a fan 21 and an evaporator 22. The fan 21 is used to form a circulating airflow, and the evaporator 22 is used to provide cooling capacity. An air duct 3 includes a first flow path 31, a second flow path 32, and a third flow path 33 communicating with each other. The first inlet of the first flow path 31 is connected to the refrigeration component 2. The drain outlet 14 forms the inlet of the second flow path 32. The first outlet 311 of the first flow path 31 and the second outlet 321 of the second flow path 32 together form the inlet of the third flow path 33. The air outlet 13 forms the outlet of the third flow path 33.

[0051] Cabinet 1 is the main structure of freezer 100, and the cavity formed inside it is called cavity 11, which is used to store items that need to be refrigerated. Air inlet 12, air outlet 13, and air drain 14 are three independent openings on cabinet 1. Air inlet 12 is used to introduce gas from cavity 11 into refrigeration component 2, air outlet 13 is used to discharge gas refrigerated by refrigeration component 2 into cavity 11, and air drain 14 is used to expel air from cavity 11 through Venturi effect.

[0052] The refrigeration unit 2 is installed outside the cabinet 1 and communicates with the interior of the cabinet 1 through the air inlet 12. The refrigeration unit 2 consists of two components: a fan 21 and an evaporator 22. When the fan 21 is working, it pressurizes the air to form a circulating airflow. The evaporator 22 is the heat exchange component of the refrigeration system, used to absorb heat from the airflow to provide cooling capacity.

[0053] The air duct 3 is a channel structure that guides airflow, consisting of a first flow path 31, a second flow path 32, and a third flow path 33. The first inlet of the first flow path 31 is connected to the air outlet side of the cooling component 2, used to deliver the cooled and pressurized main airflow. The inlet 14 serves as the inlet of the second flow path 32, allowing air from the cavity 11 to enter the air duct 3 through this inlet. The first outlet 311 of the first flow path 31 and the second outlet 321 of the second flow path 32 structurally merge to form the inlet of the third flow path 33. The outlet 13 serves as the outlet of the third flow path 33, returning the mixed airflow to the cavity 11 of the cabinet 1.

[0054] The first outlet 311 and the second outlet 321 form the third inlet, which can construct a Venturi structure in the air duct 3. Specifically, the area to which the first outlet 311 leads corresponds to the throat region of the Venturi structure. When the fan 21 drives the high-pressure circulating airflow through the first outlet 311, according to the Venturi effect in fluid mechanics, a local low-pressure area will be generated in the throat region opposite to the first outlet 311. This local low-pressure area acts on the location of the second outlet 321 of the second flow path 32, thereby forming a pressure difference in the second flow path 32. Through the pressure difference, part of the air in the cavity 11 is driven to enter the second flow path 32 through the inlet 14 and mix with the main airflow from the first flow path 31 at the inlet of the third flow path 33.

[0055] Therefore, for the air duct 3 proposed in this application, the total airflow discharged from the air outlet 13 consists of two parts. One part is the main airflow that flows through the fan 21 and the evaporator 22 and finally merges into the main airflow through the first flow channel. The magnitude of this part of the flow is related to the performance of the fan 21. The other part is the ejected airflow that is ejected into the main airflow through the second flow path 32 via the Venturi effect. This increases the total amount of air circulating in the cabinet while keeping the performance of the fan 21 unchanged. In other words, it can reduce the configuration or power of the fan 21 while meeting the total amount of air circulation requirements. This solves the technical problems of high cost and high energy consumption of the fan 21 in related technologies, and achieves the technical effect of reducing the cost of the freezer 100 and improving the energy-saving and environmental protection performance of the freezer 100.

[0056] Based on this, since the ejected airflow is directly injected into the third flow path 33 through the second flow path 32 without flowing through the evaporator 22, the temperature of the ejected airflow is higher than the temperature of the main airflow from the first flow path 31. The two airflows with different temperatures mix at the inlet of the third flow path 33, making the temperature of the airflow discharged from the outlet 13 higher than the temperature of the main airflow. This reduces the temperature difference between the inlet and outlet areas in the cavity 11, improves the uniformity of the temperature distribution in the cavity 11, and thus solves the technical problems of uneven cooling distribution and poor cooling effect existing in related technologies.

[0057] like Figure 3 , Figure 4 and Figure 10 As shown, in some embodiments of this application, the first outlet 311 and the second outlet 321 are arranged side by side.

[0058] In this embodiment, the relative positions of the first outlet 311 of the first flow path 31 and the second outlet 321 of the second flow path 32 are defined.

[0059] In this structure, "side-by-side arrangement" means that the first outlet 311 and the second outlet 321 are arranged adjacent to each other in the intake area of ​​the third flow path 33, and their outlet directions or central axes are parallel or nearly parallel in spatial position. This arrangement ensures that the flow direction of the main airflow exiting the first outlet 311 is basically consistent with the flow direction of the ejected airflow drawn in from the second outlet 321.

[0060] Because the main airflow exiting the first outlet 311 has high velocity and momentum, its flow inertia tends to maintain its original flow direction. When the first outlet 311 and the second outlet 321 are side by side and face the same direction, there is a lateral gap between the flow path of the main airflow and the inlet of the second flow path 32. If the high-pressure main airflow wants to deviate from its original path to enter the second flow path 32, it needs to overcome its own inertia and complete a nearly 90-degree flow direction change, which is difficult to achieve spontaneously in terms of airflow dynamics.

[0061] Therefore, by arranging the first outlet 311 and the second outlet 321 side by side, the inertia of the airflow can be used to block the path of the main airflow directly into the second flow path 32. This ensures that the low-pressure environment at the inlet of the second flow path 32 is mainly generated by the Venturi effect and is mainly used to extract the air in the ejection cavity 11, rather than being backflowed by the main airflow. This achieves the technical effect of improving the stability and reliability of the ejection effect of the second flow path 32 and reducing the failure rate of the ejection function.

[0062] like Figure 1 and Figure 3 As shown, in some embodiments of this application, in the height direction Z of the freezer 100, the third flow path 33 is located above the first flow path 31 and the second flow path 32, and the outlet 14 is located below the first flow path 31.

[0063] In this embodiment, the spatial relationship between each flow path and opening in the height direction Z of the freezer 100 is defined.

[0064] Specifically, in the height direction Z of the freezer 100, the third flow path 33 is positioned above the first flow path 31 and the second flow path 32, while the air outlet 13, as the outlet of the third flow path 33, is naturally located at a higher position on the cabinet 1. At the same time, the air inlet 14, as the inlet of the second flow path 32, is positioned below the first flow path 31, corresponding to the air inlet 14 being opened at a relatively low position on the cabinet 1.

[0065] By defining the aforementioned positional distribution, an air circulation path is established in the height direction Z of the freezer 100. Air at the bottom of the cavity 11, under the negative pressure generated by the Venturi effect, is drawn into the second flow path 32 through the lower-positioned inlet 14. This airflow from the bottom is then transported upwards, mixing with the main airflow from the first flow path 31 at the inlet of the higher-positioned third flow path 33. The mixed airflow is finally discharged back into the upper space of the cavity 11 through the highest-positioned outlet 13, thereby promoting forced convection and mixing of air within the cavity 11 in the height direction Z. This improves the technical defects of significant temperature differences and uneven temperature distribution inside the freezer 100, and ultimately solves the technical problems of uneven cold distribution and poor cooling effect existing in related technologies.

[0066] like Figure 1 and Figure 3 As shown, in some embodiments of this application, the first flow path 31 extends in the length direction X of the freezer 100, and the second flow path 32 and the third flow path 33 extend in the height direction Z of the freezer 100.

[0067] In this embodiment, the extension directions of the first flow path 31, the second flow path 32, and the third flow path 33 in the space of the freezer 100 are further defined. Specifically, the first flow path 31 extends horizontally along the length direction X of the freezer 100, while the second flow path 32 and the third flow path 33 extend vertically along the height direction Z of the freezer 100.

[0068] By limiting the first flow path 31 to extend in the length direction X, the cold energy from the refrigeration component 2 can be transported laterally, thereby expanding the coverage of the cold energy in the length direction X of the cabinet 1.

[0069] Similarly, by defining the second flow path 32 to extend in the height direction Z of the cabinet 1, a vertical channel can be established between the inlet 14 and the inlet of the third flow path 33. This structure allows air drawn from the bottom of the cabinet 1 through the inlet 14 to be transported upwards to the third flow path located above.

[0070] Correspondingly, the third flow path 33 also extends along the height direction Z. Its inlet receives the horizontal main airflow from the first flow path 31 and the vertical jet airflow from the second flow path 32, and continues to guide the mixed airflow upward, finally discharging it through the air outlet 13 located at the top of the cabinet 1.

[0071] Therefore, by limiting the extension direction of each flow path, a large-area cold air circulation system is formed. The horizontally extending first flow path 31 is responsible for the lateral cold air distribution, reducing the temperature difference between the left and right areas inside the cabinet; while the vertically extending second and third flow paths 32 and 33 enhance the longitudinal air agitation and cold air distribution, reducing the temperature difference between the top and bottom. This achieves the technical effects of improving the uniformity of temperature distribution in the cavity 11, improving the uniformity of cold air distribution, and improving refrigeration performance.

[0072] like Figure 1 , Figure 3 and Figure 4 As shown, in some embodiments of this application, the first flow path 31 and the second flow path 32 are distributed along the width direction Y of the freezer 100.

[0073] In this embodiment, the first flow path 31 and the second flow path 32 are further defined to be arranged side by side along the width direction Y of the freezer 100. This side-by-side arrangement makes the main airflow channel of the first flow path 31 and the ejector airflow channel of the second flow path 32 fit together in the horizontal direction, realizing the integration of the air duct 3 in the width direction Y and improving the structural compactness of the air duct 3 components.

[0074] The outlets of the first flow path 31 and the second flow path 32 are adjacent to each other in the width direction Y but are independent of each other. The high-pressure main airflow flowing out of the first outlet 311 flows in a direction parallel to the orientation of the second outlet 321. Due to its high momentum, the main airflow has strong flow inertia and tends to maintain its original flow direction.

[0075] Therefore, this side-by-side distribution in the width direction Y can guide the airflow direction through the flow path arrangement, and utilize the inertia of the main airflow to establish a barrier, reducing the possibility of the main airflow laterally entering the second flow path 32. This ensures the stability of the pressure field in the inlet region of the second flow path 32, guaranteeing the reliable operation of the Venturi ejection effect. Thus, while meeting the requirements of increased circulating air volume and improved temperature uniformity, it also enhances the stability of the air duct 3's function.

[0076] like Figure 7 , Figure 8 and Figure 9 As shown, in some embodiments of this application, there is one first flow path 31 and multiple third flow paths 33. The multiple third flow paths 33 are spaced apart. One first flow path 31 is connected to multiple third flow paths 33 through multiple first outlets 311. The number of second flow paths 32 is the same as the number of third flow paths 33. The second flow path 32 and the third flow path 33 correspond one-to-one.

[0077] In this embodiment, the first flow path 31 serves as the main air supply passage, and there is only one such path. The first flow path 31 has multiple first outlets 311 along its extension direction. The third flow path 33 serves as a mixing and air supply passage, and there are multiple such paths, which are spaced apart within the cabinet 1. Each first outlet 311 is independently connected to the inlet of a corresponding third flow path 33, thereby distributing the main airflow delivered by one first flow path 31 to multiple different air supply points.

[0078] The second flow path 32 serves as the ejection passage, and its number is the same as that of the third flow path 33, with a one-to-one correspondence between the second flow path 32 and the third flow path 33. Each second flow path 32 is equipped with an independent second outlet 321, which is connected to the inlet of its corresponding third flow path 33. Simultaneously, each second flow path 32 also corresponds to an independent drain port 14 located on the cabinet 1.

[0079] In this structure, the main airflow from the same first flow path 31 is diverted to multiple third flow paths 33. At the inlet of each third flow path 33, an independent Venturi ejection process occurs. The local main airflow flowing out at high speed from the first outlet 311 generates a negative pressure at the inlet of the third flow path 33 it enters. This negative pressure acts specifically on the outlet of the second flow path 32 that corresponds uniquely to that third flow path 33, thereby drawing air through its independent ejection cavity 11. Ultimately, in each third flow path 33, a supply airflow is formed, consisting of a portion of the main airflow and a portion of the independent ejection airflow.

[0080] As can be seen, by setting up multiple spaced third flow paths 33 and their corresponding second flow paths 32, multiple independent, spaced circulation units are established within the cabinet 1. This layout allows temperature-regulated mixed airflow to be simultaneously delivered from multiple different locations within the cabinet space, expanding the coverage area of ​​the cooling capacity, reducing dead zones in temperature control, and thus achieving the technical effect of improving the uniformity of temperature distribution inside the cavity 11 and enhancing cooling performance.

[0081] like Figure 1 and Figure 3 As shown, in some embodiments of this application, a plurality of third flow paths 33 are uniformly distributed along the length direction X of the freezer 100.

[0082] In this embodiment, the spatial arrangement of the multiple third flow paths 33 is further defined.

[0083] In this arrangement, within the internal space of the freezer 100, each third flow path 33 is arranged at approximately equal intervals along the length X of the cabinet 1, with its outlet point as the reference. This uniformly distributed layout ensures that the mixed airflow delivered from the outlets of each third flow path 33 can cover equidistant points along the length X.

[0084] When the airflow is discharged from these uniformly distributed third flow paths 33, the cooling area and energy circulation field formed in the cavity 11 are also uniformly distributed in the length direction X, thereby avoiding energy concentration in a certain local area, reducing the probability of a cooling blind zone, and thus achieving the technical effect of improving the uniformity of temperature distribution inside the cavity 11 and improving the cooling performance.

[0085] like Figure 4 , Figure 6 and Figure 9 As shown, in some embodiments of this application, a flow straightening rib 34 is provided in the first flow path 31. The flow straightening rib 34 is located on the upwind side of two adjacent first outlets 311. The flow straightening rib 34 includes a first flow straightening surface 341 and a second flow straightening surface 342. The first flow straightening surface 341 extends toward the first outlet 311 located on the upwind side, and the second flow straightening surface 342 extends toward the first outlet 311 located on the leeward side.

[0086] In this embodiment, a flow straightening rib 34 is added to the first flow path 31. The flow straightening rib 34 is disposed between two adjacent first outlets 311 along the airflow direction and is located on the upwind side of these two first outlets 311. The flow straightening rib 34 includes two flow straightening surfaces that can guide the gas flow, wherein the extension direction of the first flow straightening surface 341 points to the first outlet 311 located on the upwind side, and the extension direction of the second flow straightening surface 342 points to the first outlet 311 located on the downwind side.

[0087] When the main airflow from the fan 21 passes through the flow straightener 34, its flow path is divided and guided by the flow straightener 34. The first flow straightener 341 guides a portion of the airflow to the first outlet 311 on the upwind side, while the second flow straightener 342 guides another portion of the airflow to the first outlet 311 on the leeward side. Through this physical flow guiding effect, the flow straightener 34 achieves the function of pre-distributing the main airflow within the first flow path 31.

[0088] It is evident that the rectifier rib 34 reduces the probability that the main airflow will concentrate at a certain first outlet 311 due to inertial impact, and promotes the airflow to be distributed more evenly to multiple first outlets 311, making the airflow distributed to each first outlet 311 more balanced. This ensures the consistency of the Venturi ejection effect generated at the inlets of multiple third flow paths 33, thereby achieving the technical effect of improving the uniformity of energy distribution and the uniformity of temperature distribution in the cavity 11.

[0089] like Figure 4 , Figure 5 and Figure 6As shown, in some embodiments of this application, the air outlet 13 and the drainage outlet 14 are provided on the side wall 111 of the cavity 11. The air duct 3 includes a housing 35 and a partition 36. The housing 35 is fastened to the outside of the side wall 111. The housing 35 includes a first region 351 and a second region 352. The thickness of the first region 351 is greater than the thickness of the second region 352. The partition 36 is provided between the first region 351 and the side wall 111, and the partition 36 is connected to the second region 352.

[0090] The partition 36 and the first region 351 enclose the first flow path 31 and the first outlet 311. The partition 36, the second region 352 and the side wall 111 enclose the second flow path 32 and the second outlet 321. The first region 351 and the side wall 111 enclose the third flow path 33.

[0091] In this embodiment, a structural implementation scheme for forming various flow paths in the air duct 3 is provided. The air outlet 13 and the inlet 14 are disposed on the side wall 111 of the cavity 11. The air duct 3 is composed of a housing 35 and a partition 36, wherein the housing 35 is fixed to the outside of the side wall 111 by a snap-fit ​​method.

[0092] The housing 35 includes a first region 351 and a second region 352, and the thickness of the first region 351 is greater than the thickness of the second region 352. A partition 36 is disposed in the space between the housing 35 and the side wall 111, specifically located between the first region 351 and the side wall 111 of the housing 35, and the edge of the partition 36 is in contact with the thinner second region 352 of the housing 35.

[0093] The partition 36 and the inner wall of the thicker first region 351 on the housing 35 together form the first flow path 31 and define the boundary of the first outlet 311. The partition 36, the inner wall of the thinner second region 352 of the housing 35, and the side wall 111 of the cabinet 1 together form the second flow path 32 and define the boundary of the second outlet 321. The inner wall of the first region 351 and the side wall 111 of the cabinet 1 together form the third flow path 33.

[0094] In this structure, the greater thickness of the first region 351 provides the necessary space for the formation of the first flow path 31 within it, while its inner wall also serves as one of the boundaries constituting the third flow path 33. The smaller thickness of the second region 352, together with the partition 36 and the side wall 111 of the cabinet 1, forms the relatively compact second flow path 32. The partition 36, as the core separating component, spatially isolates the first flow path 31 from the second flow path 32, ensuring that the main airflow and the ejector airflow do not interfere with each other before reaching the third flow path 33.

[0095] This design, in which the shell 35, partition 36 and cabinet 1 side wall 111 are assembled together to form various flow paths, provides a simple, reliable and easy-to-manufacture structural form, thereby achieving the technical effect of making reasonable use of the inherent structure of the cavity 11, reducing the structural complexity of the air duct 3, and reducing the material cost and processing cost of the air duct 3.

[0096] like Figure 1 and Figure 3 As shown, in some embodiments of this application, the air duct 3 includes two air ducts 3, which are symmetrically arranged on opposite sides of the cavity 11.

[0097] In this embodiment, the overall layout of the air duct 3 system is further defined. Specifically, two air ducts 3 are provided, and these two air ducts 3 are located on opposite sides of the cavity 11 of the cabinet 1, and are arranged symmetrically.

[0098] In this embodiment, there is an independent and structurally identical air duct 3 on the left and right sides of the cavity 11. Each air duct 3 includes its own first flow path 31, second flow path 32 and third flow path 33, and is respectively connected to the air outlet 13 and the air outlet 14 provided on the two side walls 111.

[0099] In this structure, the two air ducts 3 operate independently and synchronously. Each air duct 3 delivers the main airflow from the cooling component 2 through its first flow path 31, and utilizes the Venturi effect to draw air from the cavity 11 through its second flow path 32 from the inlet 14 on the same side. After the two airflows mix in the third flow path 33 of each air duct 3, they are discharged into the cavity 11 through the outlet 13 on the corresponding side. This achieves forced convection and uniform mixing of air in the horizontal direction within the cavity 11, improving the uniformity of temperature distribution in the cabinet space, especially on the horizontal plane. At the same time, the double-sided ejection structure improves the overall circulation efficiency, reducing the performance requirements of the fan 21 when meeting higher circulation requirements.

[0100] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A freezer, characterized in that, include: The cabinet includes a cavity, and an air inlet, an air outlet, and a drain outlet that connect to the cavity. The cavity is used to store items. A refrigeration component is disposed in the cabinet and located outside the cavity. The refrigeration component is connected to the air inlet. The refrigeration component includes a fan and an evaporator. The fan is used to form a circulating airflow, and the evaporator is used to provide cooling capacity. The air duct includes a first flow path, a second flow path, and a third flow path that are connected. The first inlet of the first flow path is connected to the refrigeration component. The inlet forms the inlet of the second flow path. The first outlet of the first flow path and the second outlet of the second flow path together form the inlet of the third flow path. The outlet forms the outlet of the third flow path.

2. The freezer according to claim 1, characterized in that, The first outlet and the second outlet are arranged side by side.

3. The freezer according to claim 1, characterized in that, In the height direction of the freezer, the third flow path is located above the first flow path and the second flow path, and the drain outlet is located below the first flow path.

4. The freezer according to claim 3, characterized in that, The first flow path extends along the length of the freezer, and the second and third flow paths extend along the height of the freezer.

5. The freezer according to claim 3, characterized in that, The first flow path and the second flow path are distributed along the width direction of the freezer.

6. The freezer according to claim 1, characterized in that, There is one first flow path and multiple third flow paths. The multiple third flow paths are spaced apart. One first flow path is connected to multiple third flow paths through multiple first outlets. The number of second flow paths is the same as the number of third flow paths. The second flow path and the third flow path correspond one-to-one.

7. The freezer according to claim 6, characterized in that, The multiple third flow paths are evenly distributed along the length of the freezer.

8. The freezer according to claim 6, characterized in that, The first flow path is provided with a flow straightening rib, which is located on the upwind side of two adjacent first outlets. The flow straightening rib includes a first flow straightening surface and a second flow straightening surface. The first flow straightening surface extends toward the first outlet located on the upwind side, and the second flow straightening surface extends toward the first outlet located on the leeward side.

9. The freezer according to any one of claims 1 to 8, characterized in that, The air outlet and the air inlet are located on the side wall of the cavity. The air duct includes a shell and a partition. The shell is fastened to the outside of the side wall. The shell includes a first region and a second region. The thickness of the first region is greater than the thickness of the second region. The partition is located between the first region and the side wall, and the partition is connected to the second region. The partition and the first region enclose the first flow path and the first outlet, the partition, the second region and the sidewall enclose the second flow path and the second outlet, and the first region and the sidewall enclose the third flow path.

10. The freezer according to any one of claims 1 to 8, characterized in that, The air duct includes two ducts, which are symmetrically arranged on opposite sides of the cavity.

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