Air duct structure and refrigerator

Abstract

This utility model provides an air duct structure and a refrigerator. The air duct structure includes an air duct body and an air supply channel disposed in the air duct body. Several air outlets are spaced apart along the air supply direction of the air supply channel and connected to the air supply channel. An air inlet rectifier is disposed at the air inlet for primary rectification of the airflow entering the air duct structure. Several diverter plates are disposed at the corresponding air outlets in the air supply channel to divert the airflow to each air outlet along the air supply direction of the air duct structure. This air duct structure, through the synergistic effect of the honeycomb air inlet rectifier at the air inlet, the honeycomb air outlet rectifier at each air outlet, and the diverter plates corresponding to each air outlet in the air supply channel, reduces turbulence and eddies at the air inlet, avoids local airflow deposition in the air supply channel, and reduces mechanical stress in the air duct; optimizes the airflow distribution in the air supply channel, reduces airflow energy loss, and improves cooling efficiency; reduces airflow stagnation at the air outlets, and evenly diffuses the airflow to all corners of the refrigerator, improving the preservation effect.

Description

Technical Field

[0001] This utility model relates to the field of refrigerator technology, and in particular to an air duct structure and a refrigerator using the same. Background Technology

[0002] With the continuous development of modern life, refrigerators, as an indispensable household appliance, directly affect the preservation of food and energy consumption through their performance and efficiency. However, the traditional refrigerator's air duct structure design still has many problems in terms of airflow distribution and cooling efficiency, which urgently need to be improved and optimized.

[0003] Traditional refrigerators typically have simple air duct structures and lack effective control over airflow distribution, leading to the following problems: (i) Uneven airflow distribution within the duct. In traditional refrigerators, when cold air enters the cabinet through the duct, turbulence and cyclones are easily generated at the air inlet due to the unreasonable structure of the duct inlet, causing airflow to accumulate near the duct opening; (ii) Excessive temperature difference between the lower and upper air outlets. Due to the unreasonable structure of the air inlet leading to airflow accumulation, there is more cold air in the lower layer of the duct. When the airflow enters the duct and travels along the set route, it is preferentially supplied to the lower air outlet, which may result in excessively low air temperature at the lower air outlet and excessively high air temperature at the upper air outlet due to insufficient cold airflow, thus causing uneven airflow between the upper and lower layers of the duct and consequently uneven temperature within the cabinet; (iii) Poor diffusion effect of the air outlet. Since the air outlet of the air duct usually adopts a structure with the opening directly on the side of the air duct, the temperature of the cold air flowing out of the air duct may be too low near the air outlet, while the temperature is higher at the location farther away from the air outlet, which also affects the temperature uniformity of various parts of the box. Utility Model Content

[0004] This utility model proposes an air duct structure and a refrigerator to solve the technical problem of uneven airflow distribution inside the air duct structure of traditional refrigerators, which causes uneven airflow between the upper and lower layers of the air duct.

[0005] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0006] This utility model provides a duct structure, including a duct body and an air supply channel disposed on the duct body, and a plurality of air outlets disposed at intervals on the duct body along the air supply direction of the air supply channel and respectively connected to the air supply channel.

[0007] The air duct structure also includes:

[0008] An air inlet rectifier is located at the air inlet of the air supply duct and is used to rectify the airflow entering the duct structure.

[0009] Several diversion plates are installed at the corresponding air outlets of the air supply channel to divert the airflow to each air outlet one by one along the air supply direction of the air duct structure.

[0010] Furthermore, the air duct structure also includes:

[0011] An air outlet rectifier, located at the air outlet, is used to perform secondary rectification of the airflow in the output air duct structure;

[0012] Preferably, the air intake rectifier includes:

[0013] The primary, secondary, and tertiary cellular modules are sequentially arranged at the air inlet along the air supply direction of the air supply duct.

[0014] Preferably, the first-stage honeycomb module is a honeycomb deodorization module, the second-stage honeycomb module is a honeycomb humidification module, and the third-stage honeycomb module is a honeycomb rectifier module.

[0015] Preferably, the honeycomb deodorization module uses honeycomb-shaped activated carbon adsorption blocks, the honeycomb humidification module uses honeycomb-shaped moisturizing gel blocks, and the honeycomb rectifier module uses honeycomb-shaped plastic blocks.

[0016] Preferably, the distributor plate includes:

[0017] The diversion section is located at the corresponding air outlet on the air supply duct and extends along the air supply direction of the duct structure.

[0018] The guide section is connected to the downstream end of the flow distribution section in the air supply direction of the duct structure and extends at an angle toward the corresponding air outlet.

[0019] Preferably, the air outlet rectifier includes a honeycomb rectifier plate disposed at the air outlet.

[0020] Furthermore, the air outlet rectifier also includes:

[0021] The diffuser flange, which is flared outward in a trumpet shape, is located at one end of the honeycomb rectifier plate facing away from the air supply channel, and is used to diffuse and guide the airflow of the output air duct structure.

[0022] Preferably, the main body of the air duct includes:

[0023] The air inlet section and the branch section are connected to a pair of branch sections of the air inlet section. The air supply channel includes an air inlet channel located in the air inlet section and a pair of branch channels located in the pair of branch sections respectively. The air inlet is located at the end of the air inlet section and is connected to the air inlet channel. Several air outlets are spaced apart in the branch sections along the air supply direction of the branch channels and are connected to the branch channels respectively.

[0024] This utility model also provides a refrigerator, including the above-described air duct structure.

[0025] Preferably, the airflow direction of the duct structure is from bottom to top along the height of the refrigerator.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The air duct structure provided by this utility model utilizes the synergistic effect of a honeycomb-shaped air intake rectifier at the air inlet, a honeycomb-shaped air outlet rectifier at each air outlet, and a flow divider corresponding to each air outlet in the air supply channel. After primary rectification, it reduces airflow turbulence and eddies at the air inlet, avoids local airflow deposition near the air inlet in the air supply channel, reduces mechanical stress in the air duct system, and extends the service life of the equipment. The flow divider optimizes the airflow distribution inside the air supply channel, reduces airflow energy loss, and improves cooling efficiency. After secondary rectification and diffusion, it reduces airflow stagnation at the air outlet, evenly diffuses the airflow to all corners of the refrigerator, reduces temperature fluctuations inside the refrigerator, improves temperature uniformity, avoids local overheating or overcooling, and improves food preservation. Attached Figure Description

[0028] To more clearly illustrate the technical solution proposed by this utility model, the present utility model will be described in detail below with reference to the embodiments and accompanying drawings. It should be understood that the embodiments and accompanying drawings described in the following detailed description are merely some embodiments of this utility model, and those skilled in the art can make changes to these drawings under the concept of this utility model.

[0029] Figure 1 A three-dimensional structural diagram of the air intake rectifier after concealing the primary and secondary honeycomb modules in an embodiment of the air duct structure provided by this utility model;

[0030] Figure 2 A front view schematic diagram of an embodiment of the air duct structure provided by this utility model;

[0031] Figure 3 A bottom view of an embodiment of the air duct structure provided by this utility model;

[0032] Figure 4 A side view of an embodiment of the air duct structure provided by this utility model;

[0033] Figure 5 for Figure 1 Exploded view of the air duct structure in the diagram;

[0034] Figure 6 A three-dimensional structural schematic diagram of the main body of the air duct in an embodiment of the air duct structure provided by this utility model;

[0035] Figure 7 A front view structural schematic diagram of the main body of the air duct body according to an embodiment of the air duct structure provided by this utility model;

[0036] Figure 8 A bottom view of the main body of the air duct in an embodiment of the air duct structure provided by this utility model;

[0037] Figure 9 A side view of the main body of the air duct structure according to an embodiment of the air duct structure provided by this utility model;

[0038] Figure 10 A three-dimensional structural schematic diagram of the air inlet rectifier of an embodiment of the air duct structure provided by this utility model;

[0039] Figure 11 A bottom view of the air intake rectifier of an embodiment of the air duct structure provided by this utility model;

[0040] Figure 12 A three-dimensional structural schematic diagram of the air outlet rectifier of an embodiment of the air duct structure provided by this utility model;

[0041] Figure 13 A schematic diagram of the main structure of the air outlet rectifier of an embodiment of the air duct structure provided by this utility model;

[0042] Figure 14 A side view of the air outlet rectifier of an embodiment of the air duct structure provided by this utility model.

[0043] The main markings in the attached figures are as follows:

[0044] 1. Main body of the air duct;

[0045] 11. Air intake section;

[0046] 12. Branch segment;

[0047] 13. Air inlet;

[0048] 14. Air supply duct;

[0049] 141. Air intake duct;

[0050] 142. Branch Channel;

[0051] 15. Air vent;

[0052] 2. Inlet rectifier;

[0053] 21. Primary cellular module;

[0054] 22. Secondary cellular module;

[0055] 23. Three-level cellular module;

[0056] 3. Diverter plate;

[0057] 31. Diversion section;

[0058] 32. Diversion section;

[0059] 4. Air rectifier;

[0060] 41. Honeycomb rectifier plate;

[0061] 42. Diffusion flanging. Detailed Implementation

[0062] To make the technical problem to be solved, the technical solution and the beneficial effects of this utility model clearer, the following description is provided in conjunction with the appendix. Figure 1-14 The present invention will be further described in detail with reference to the embodiments.

[0063] Please refer to the following: Figure 1-14 The air duct structure provided by this utility model includes an air duct body 1 and an air supply channel 14 disposed on the air duct body 1, as well as a plurality of air outlets 15 disposed at intervals on the air duct body 1 along the air supply direction of the air supply channel 14 and respectively connected to the air supply channel 14.

[0064] The air duct structure also includes:

[0065] The air inlet rectifier 2 is located at the air inlet 13 of the air supply channel 14 and is used to rectify the airflow entering the air duct structure from the upstream direction of the air duct structure.

[0066] Several diverter plates 3 are installed at the corresponding air outlets 15 in the air supply channel 14 to divert the airflow that enters the air supply channel 14 after being rectified once by the air inlet rectifier 2 at the air inlet 13 to each air outlet 15 along the air supply direction of the air duct structure.

[0067] The air duct structure provided by this utility model adds an air intake rectifier 2 at the air inlet 13 of the air duct to perform preliminary (first) rectification of the airflow entering the air duct structure at the air inlet 13, thereby optimizing the design of the air inlet 13 to reduce turbulence, eddies and cyclones at this location, preventing airflow from depositing near the air duct opening, making the airflow entering the air duct flow and distribution in the air supply channel 14 more uniform and stable, reducing the mechanical stress of the air duct, and extending its service life.

[0068] Furthermore, this air duct structure optimizes the air duct design by adding several diverter plates 3 corresponding to each air outlet 15 in the air supply duct 14. This achieves airflow diversion between the lower air outlet 15 and the upper air outlet 15, alleviating local airflow deposition of cold air in the lower part of the air supply duct 14. This ensures that the airflow is evenly supplied to the lower and upper air outlets 15 after entering the air supply duct 14 and traveling along the set route. This alleviates the problem of uneven airflow between the upper and lower layers of the air duct caused by cold air deposition in the lower layer of the air supply duct 14, resulting in excessively low air outlet temperature at the lower air outlet 15, and insufficient cold airflow in the upper layer of the air supply duct 14, resulting in excessively high air outlet temperature at the upper air outlet 15. This improves the refrigerant circulation efficiency of the refrigerator, ensures the preservation effect of food, and reduces energy consumption, achieving energy saving and environmental protection.

[0069] Please refer to the following: Figure 1-5 10-11, In this embodiment, the air intake rectifier 2 includes:

[0070] The primary honeycomb module 21, the secondary honeycomb module 22, and the tertiary honeycomb module 23 are fixedly installed at the air inlet 13 in sequence along the air supply direction of the air supply channel 14, and each of the primary honeycomb module 21, the secondary honeycomb module 22, and the tertiary honeycomb module 23 is provided with multiple regularly arranged honeycomb airflow channels.

[0071] In one embodiment of this example, the primary cellular module 21 is a cellular deodorization module, the secondary cellular module 22 is a cellular humidification module, and the tertiary cellular module 23 is a cellular rectifier module.

[0072] In a preferred embodiment of this invention, the honeycomb deodorization module uses honeycomb-shaped activated carbon adsorption blocks, the honeycomb humidification module uses honeycomb-shaped moisturizing gel blocks, and the honeycomb rectifier module uses honeycomb-shaped plastic blocks.

[0073] As a preferred embodiment of this invention, the cellular rectifier module uses a honeycomb-shaped PP plastic block.

[0074] Please refer to the following: Figure 1-5 In the preferred embodiment of this example, the primary honeycomb module 21, the secondary honeycomb module 22, and the tertiary honeycomb module 23 are all rectangular parallelepipeds. The primary honeycomb module 21, the secondary honeycomb module 22, and the tertiary honeycomb module 23 are evenly distributed with multiple honeycomb-shaped airflow channels with hexagonal cross sections arranged regularly. The primary honeycomb module 21, the secondary honeycomb module 22, and the tertiary honeycomb module 23 are stacked sequentially at the air inlet 13 along the air supply direction of the air supply channel 14, and the corresponding hexagonal channels of the primary honeycomb module 21, the secondary honeycomb module 22, and the tertiary honeycomb module 23 are arranged facing each other.

[0075] In other embodiments of this example, the primary cellular module 21, the secondary cellular module 22, and the tertiary cellular module 23 may also be cylindrical or other shapes.

[0076] In other embodiments of this example, the primary cellular module 21, the secondary cellular module 22, and the tertiary cellular module 23 may also have multiple airflow channels with cross-sections of triangles, rectangles, polygons, or other shapes.

[0077] Because the air duct structure provided by this utility model has an air intake rectifier 2 composed of three-stage rectifier honeycomb modules at the air inlet 13 of the air supply duct 14, the honeycomb airflow channels of these rectifier honeycomb modules can perform preliminary (first) rectification of the airflow entering the air supply duct 14, thereby effectively reducing turbulence and eddies in the airflow, making the airflow more uniform, stable and smooth after entering the air supply duct 14, and also reducing the energy loss caused by airflow turbulence, thereby improving the refrigerant circulation efficiency of the refrigerator and thus improving the overall cooling performance; at the same time, the regularly arranged and uniformly distributed honeycomb airflow channels ensure that the airflow is evenly distributed when entering the air supply duct 14, avoiding the generation of local airflow that is too strong or too weak near the air inlet 13 in the air supply duct 14; in addition, the air intake rectifier 2 also integrates a deodorization module and a humidification module, integrating sterilization and humidification functions of the airflow while performing preliminary (first) rectification.

[0078] Please refer to the following: Figure 1-7 In this embodiment, the diverter plate 3 includes:

[0079] The diversion section 31 is fixed on the air supply duct 14 at the corresponding air outlet 15 and extends along the air supply direction of the duct structure.

[0080] The guide section 32 is connected to the downstream end of the diversion section 31 in the air supply direction of the air duct structure, and extends inclinedly toward the corresponding air outlet 15, and is fixed on the air supply channel 14.

[0081] Please refer to the following: Figure 1-7 In this preferred embodiment, the air duct body 1, the air supply channel 14 provided on the air duct body 1, and the diversion plate 3 are integrally formed.

[0082] Please refer to the following: Figure 1-7 As a preferred embodiment, the air outlet 15 at the downstream end (end) of the air supply channel 14 corresponding to the air supply direction of the air duct structure is not provided with a diverter plate 3.

[0083] Because the air duct structure provided by this utility model adds a diversion plate 3 consisting of a diversion section 31 and a guide section 32 at the air outlet 15 corresponding to the air supply channel 14, the overall structural layout of the air supply channel 14 is optimized, thereby reducing the resistance of airflow to the downstream air outlet 15 in the conveying direction, and dividing the cold air to divert the flow to each air outlet 15, further alleviating the local deposition of airflow near the air inlet 13 in the air supply channel 14, and improving the refrigerant circulation efficiency.

[0084] Please refer to the following: Figure 1-5 12-14, In this embodiment, the air duct structure further includes:

[0085] Air rectifier 4, located at air outlet 15, is used to perform secondary rectification of the airflow output downstream from the duct structure.

[0086] Please refer to the following: Figure 1-5 12-14, as a preferred embodiment of this example, the air outlet rectifier 4 includes:

[0087] The honeycomb rectifier plate 41 is located at the air outlet 15 and has multiple regularly arranged honeycomb-shaped airflow channels.

[0088] Please refer to the following: Figure 1-5 12-14, as a preferred embodiment of this invention, the air outlet rectifier 4 further includes:

[0089] The diffuser flange 42 is arranged in a trumpet shape at one end of the honeycomb rectifier plate 41 facing away from the air supply channel 14. It is used to diffuse and guide the airflow through the air outlet structure of the honeycomb rectifier plate 41, thereby reducing the airflow stagnation at the air outlet 15, optimizing the internal temperature distribution of the refrigerator, improving the uniformity of the internal temperature, and improving the food preservation effect.

[0090] Please refer to the following: Figure 1-5 12-14, as a preferred embodiment of this example, the honeycomb rectifier plate 41 is rectangular, and the honeycomb rectifier plate 41 has a plurality of honeycomb airflow channels with hexagonal cross sections arranged in a regular manner.

[0091] In other embodiments of this example, the honeycomb rectifier plate 41 may also be cylindrical or other shapes.

[0092] In other embodiments of this example, the honeycomb rectifier plate 41 may also have multiple airflow channels with cross-sections of triangles, rectangles, polygons or other shapes.

[0093] Because the air duct structure provided by this utility model adds an air outlet rectifier 4 composed of a honeycomb rectifier plate 41 and a diffuser flange 42 at the air outlet 15, the air duct structure, through the synergistic effect of the honeycomb inlet rectifier 2 and the honeycomb outlet rectifier 4, performs secondary rectification and diffusion of the airflow of the output air duct structure at the air outlet 15, optimizes the output airflow distribution, further reduces airflow turbulence and energy loss, and improves cooling efficiency; at the same time, it evenly diffuses and guides the cold airflow to all corners distributed in the cabinet, avoiding local overcooling or overheating, thereby improving the temperature uniformity inside the cabinet, effectively reducing temperature fluctuations inside the cabinet, and improving the food preservation effect.

[0094] Please refer to the following: Figure 1-9 In this embodiment, the air duct body 1 includes:

[0095] The air inlet section 11 and the bifurcated branch sections 12 connected to the air inlet section 11 are included. The air supply channel 14 includes an air inlet channel 141 located in the air inlet section 11 and a pair of branch channels 142 located in the pair of branch sections 12 respectively. The air inlet 13 is located at the end of the air inlet section 11 and is connected to the air inlet channel 141. Several air outlets 15 are spaced apart in the branch sections 12 along the air supply direction of the branch channels 142 and are connected to the branch channels 142 respectively.

[0096] In one embodiment, the air duct body 1 may also include multiple branch sections 12 that are bifurcated and connected to the air inlet section 11.

[0097] In other embodiments, the duct body 1 may also be a duct body 1 that is not branched off from the air inlet section 11.

[0098] This utility model also provides a refrigerator, including the above-described air duct structure.

[0099] In this embodiment, the air supply direction of the air duct structure is from bottom to top along the height of the refrigerator.

[0100] As a preferred embodiment of this invention, the refrigerator includes a refrigerator compartment and the aforementioned air duct structure located on one side of the refrigerator compartment, as well as a fan located below the air duct structure. Under the blowing / exhausting action of the fan from bottom to top, the air delivery direction of the air duct structure is to deliver air from the bottom to the top of the refrigerator along the height direction of the refrigerator.

[0101] The working principle of the air duct structure provided by this utility model when applied to a refrigerator is as follows:

[0102] The chaotic airflow from the fan below the refrigerator compartment, carrying turbulence and cyclones, causes fluid condensation, reducing the gas flow rate entering the air inlet 13. This, in turn, affects heat transfer and increases the refrigerator's power consumption. The honeycomb-shaped air intake rectifier 2, located at the air inlet 13 in the air duct structure, can perform preliminary (first-stage) rectification of the airflow from the fan, thereby reducing turbulence as it enters the air supply channel 14 from the air inlet 13, making the airflow more uniform and stable.

[0103] When airflow enters the air supply duct 14 and travels along the set route, the lower air outlet 15 may be supplied preferentially, resulting in the lower air outlet 15 having an excessively low temperature and the upper air outlet 15 having an excessively high temperature. The diverter plate 3 installed in the air supply duct 14 at each corresponding air outlet 15 can separate the lower and middle airflows of the air supply duct 14 step by step, so that part of the airflow passing through each air outlet 15 continues to rise, and part of it is guided to the output air duct structure at the air outlet 15.

[0104] When airflow is output from each air outlet 15 and diffuses into the external refrigerator compartment environment, thermal convection and gas vortices may occur due to temperature differences. The honeycomb-shaped air outlet rectifier 4, which consists of a honeycomb rectifier plate 41 and a diffuser flange 42, located at the air outlet 15, can perform secondary rectification of the airflow in the output air duct structure, and diffuse the airflow through the trumpet-shaped diffuser flange 42 structure to reduce the stagnation of airflow at the air outlet 15, thereby evenly dispersing the cold airflow to all corners inside the refrigerator compartment, and thus reducing the occurrence of thermal convection and gas vortices inside the refrigerator compartment.

[0105] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Those skilled in the art should understand that any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A duct structure, comprising a duct body (1) and an air supply channel (14) disposed on the duct body (1), and a plurality of air outlets (15) disposed at intervals on the duct body (1) along the air supply direction of the air supply channel (14) and respectively connected to the air supply channel (14); Its features are, The air duct structure also includes: An air inlet rectifier (2) is provided at the air inlet (13) of the air supply channel (14) and is used to rectify the airflow of the input air duct structure. Several diversion plates (3) are installed at the air outlets (15) of the air supply channel (14) to divert the airflow to each air outlet (15) along the air supply direction of the air duct structure.

2. The air duct structure as described in claim 1, characterized in that, Also includes: An air rectifier (4) is provided at the air outlet (15) and is used to perform secondary rectification of the airflow in the output air duct structure.

3. The air duct structure as described in claim 2, characterized in that, The air intake rectifier (2) includes: The primary cellular module (21), the secondary cellular module (22), and the tertiary cellular module (23) are sequentially arranged at the air inlet (13) along the air supply direction of the air supply channel (14).

4. The air duct structure as described in claim 3, characterized in that, The first-level cellular module (21) is a cellular deodorization module, the second-level cellular module (22) is a cellular humidification module, and the third-level cellular module (23) is a cellular rectification module.

5. The air duct structure as described in claim 4, characterized in that, The honeycomb deodorization module uses honeycomb-shaped activated carbon adsorption blocks, the honeycomb humidification module uses honeycomb-shaped moisturizing gel blocks, and the honeycomb rectifier module uses honeycomb-shaped plastic blocks.

6. The air duct structure as described in any one of claims 1-5, characterized in that, The diverter plate (3) includes: The diversion section (31) is located on the air supply channel (14) at the air outlet (15) and extends along the air supply direction of the air duct structure; The guide section (32) is connected to the downstream end of the diversion section (31) in the air supply direction of the duct structure and extends obliquely toward the corresponding air outlet (15).

7. The air duct structure as described in any one of claims 2-5, characterized in that, The air outlet rectifier (4) includes: A honeycomb rectifier plate (41) is disposed at the air outlet (15).

8. The air duct structure as described in claim 7, characterized in that, The air outlet rectifier (4) also includes: The diffuser flange (42) is arranged in a trumpet shape and is located at one end of the honeycomb rectifier plate (41) facing away from the air supply channel (14) to diffuse and guide the airflow of the output air duct structure.

9. The air duct structure as described in any one of claims 1-5, characterized in that, The main body of the air duct (1) includes: An air inlet section (11) and a pair of branch sections (12) connected to the air inlet section (11) are provided. The air supply channel (14) includes an air inlet channel (141) provided in the air inlet section (11) and a pair of branch channels (142) respectively provided in the pair of branch sections (12). The air inlet (13) is provided at the end of the air inlet section (11) and connected to the air inlet channel (141). A plurality of air outlets (15) are spaced apart on the branch section (12) along the air supply direction of the branch channels (142) and are respectively connected to the branch channels (142).

10. A refrigerator, characterized in that, Includes the air duct structure as described in any one of claims 1-9.

11. The refrigerator as described in claim 10, characterized in that, The airflow direction of the air duct structure is from bottom to top along the height of the refrigerator.

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