Nitrogen preservation drawer and refrigerator thereof

Abstract

The utility model relates to domestic appliance technical field, especially a kind of nitrogen fresh-keeping drawer and refrigerator thereof. Nitrogen fresh-keeping drawer includes drawer and dehumidification air duct, and the inside of drawer has chamber;Dehumidification air duct is hollowly provided and two ends are respectively provided with air inlet and air outlet, air inlet and air outlet are all communicated with chamber, and dehumidification air duct is equipped with refrigerating part, and the working temperature of refrigerating part is lower than the temperature in chamber;Wherein, dehumidification air duct is also equipped with water baffle and liquid outlet, along the first direction from air inlet to air outlet, liquid outlet is located the side of refrigerating part close to air outlet, and water baffle is set to the side of liquid outlet close to air outlet. Its advantage lies in, by being provided with the dehumidification air duct with air inlet and air outlet, and cooperate with the refrigerating part with working temperature lower than chamber temperature, constitute an active internal circulation dehumidification system. Condense using refrigerating part surface, effectively reduce the humidity of air flow.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a nitrogen-filled food preservation drawer and its refrigerator. Background Technology

[0002] To improve food preservation, existing refrigerators are equipped with nitrogen-filled crisper drawers. Food stored in nitrogen-filled crisper drawers has reduced respiration efficiency, thus preserving it for a longer time.

[0003] Currently, nitrogen-sealed food drawers mainly use two dehumidification methods: passive desiccant adsorption and active fan dehumidification. The former has low dehumidification efficiency and cannot control humidity in real time, while the latter causes the nitrogen concentration in the drawer to drop rapidly while dehumidifying, requiring frequent nitrogen replenishment, increasing energy consumption and affecting the stability of food preservation. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a nitrogen-sealed food preservation drawer.

[0005] A nitrogen-sealed food preservation drawer includes: a drawer with an internal chamber; a dehumidifying duct, hollow in structure with an air inlet and an air outlet at both ends, both of which are connected to the chamber; a refrigeration component is provided in the dehumidifying duct, the operating temperature of which is lower than the temperature inside the chamber; wherein, the dehumidifying duct is also provided with a baffle plate and a liquid outlet, and along a first direction from the air inlet to the air outlet, the liquid outlet is located on the side of the refrigeration component closer to the air outlet, and the baffle plate is located on the side of the liquid outlet closer to the air outlet.

[0006] This configuration, with its dehumidification duct featuring both inlet and outlet, and a cooling component operating at a temperature lower than the chamber temperature, creates an active internal circulation dehumidification system. The system effectively reduces the humidity of the airflow by utilizing condensation on the surface of the cooling component. By placing the liquid outlet on the side of the cooling component closest to the outlet and installing a baffle on the same side, it ensures that condensed water droplets are effectively collected in the direction of airflow and discharged from the outlet. Simultaneously, the baffle prevents the airflow from carrying water droplets towards the outlet, thus achieving efficient dehumidification and effective water vapor separation.

[0007] In one embodiment, the dehumidification duct has a bottom near the drawer, the liquid outlet is located at the bottom, and the bottom has a slope that is inclined toward the liquid outlet.

[0008] In one embodiment, the inclined surfaces are formed on both sides of the outlet in the width direction.

[0009] In one embodiment, the baffle plate is flush with the edge of the liquid outlet near the air outlet.

[0010] In one embodiment, a water guide pipe is connected to the dehumidification duct, the water guide pipe being located outside the dehumidification duct and communicating with the liquid outlet.

[0011] In one embodiment, the cooling element is configured as a semiconductor cooling chip having a cold end and a hot end, the cold end being located inside the dehumidification duct and the hot end being located outside the dehumidification duct.

[0012] In one embodiment, a heat-conducting plate is also provided in the dehumidification duct. The heat-conducting plate is disposed on the side of the semiconductor cooling chip near the air outlet, and the heat-conducting plate is connected to the hot end through a heat pipe.

[0013] In one embodiment, the dehumidification duct includes a first section, a second section, and a third section. The first section and the third section are both connected to the drawer and are arranged perpendicular to the drawer. The second section connects the first section and the third section, is arranged perpendicular to the first section and the third section, and extends parallel to the upper side of the drawer.

[0014] In one embodiment, the drawer includes a lid and a body, the lid and the body being connected to form the chamber, and the dehumidification duct being connected to the lid.

[0015] This utility model also provides a refrigerator, including the nitrogen preservation drawer as described above.

[0016] Compared to existing technologies, this invention integrates a condensate drainage structure into the semiconductor refrigeration dehumidification duct. Condensate is generated through the refrigeration components and discharged through a baffle plate, liquid outlet, and water pipe. Furthermore, waste heat is recovered using a heat pipe. This invention achieves efficient and active dehumidification of the nitrogen preservation drawer while effectively maintaining stable nitrogen concentration and temperature within the cavity. It solves the technical problems of low efficiency, nitrogen loss, and temperature fluctuations in traditional dehumidification methods, significantly improving the food preservation effect. Attached Figure Description

[0017] Figure 1 A perspective view of one embodiment of the nitrogen-filled food preservation drawer provided by this utility model;

[0018] Figure 2 A schematic diagram of the structure of one embodiment of the nitrogen-preserving drawer provided by this utility model;

[0019] Figure 3 A partially enlarged view of one embodiment of the nitrogen-sealed food preservation drawer provided by this utility model;

[0020] Figure 4This is a partially enlarged view from another angle of one embodiment of the nitrogen-filled food preservation drawer provided by this utility model.

[0021] The symbols in the diagram represent the following meanings:

[0022] 100. Nitrogen-filled food storage drawer; 10. Drawer; 11. Chamber; 12. Lid; 13. Body; 20. Dehumidification duct; 201. First section; 202. Second section; 203. Third section; 21. Air inlet; 22. Air outlet; 23. Refrigeration component; 24. Liquid outlet; 25. Water baffle; 26. Sloping surface; 27. Water guide pipe; 28. Heat pipe; 29. ​​Heat-conducting plate; 30. Fan. Detailed Implementation

[0023] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0024] It should be noted that when a mechanism is referred to as being "fixed to" or "set on" another mechanism, it can be directly on the other mechanism or there may be an intervening mechanism. When a mechanism is considered to be "connected to" another mechanism, it can be directly connected to the other mechanism or there may be an intervening mechanism. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0025] 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 at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0028] This utility model provides a nitrogen-preserving drawer 100, which can achieve self-circulation through the dehumidification duct 20 to avoid nitrogen content loss. A cooling element 23 is set in the dehumidification duct 20 so that the moisture in the air is condensed at the cooling element 23 and discharged through the liquid outlet 24, thereby completing the dehumidification of the drawer 10.

[0029] Please see Figures 1-4 The nitrogen-preservation drawer 100 includes a drawer 10 and a dehumidification duct 20. The drawer 10 has a chamber 11 inside. The dehumidification duct 20 is hollow and has an air inlet 21 and an air outlet 22 at both ends. Both the air inlet 21 and the air outlet 22 are connected to the chamber 11. A cooling element 23 is provided in the dehumidification duct 20. The operating temperature of the cooling element 23 is lower than the temperature inside the chamber 11. The dehumidification duct 20 is also provided with a baffle plate 25 and a liquid outlet 24. Along the first direction from the air inlet 21 to the air outlet 22, the liquid outlet 24 is located on the side of the cooling element 23 near the air outlet 22, and the baffle plate 25 is located on the side of the liquid outlet 24 near the air outlet 22.

[0030] Thus, by setting up a dehumidifying air duct 20 with an air inlet 21 and an air outlet 22, and cooperating with a cooling component 23 whose operating temperature is lower than that of the chamber 11, an active internal circulation dehumidification system is formed. The condensation on the surface of the cooling component 23 effectively reduces the humidity of the air flowing through it. By placing the liquid outlet 24 on the side of the cooling component 23 near the air outlet 22, and placing a baffle 25 on the same side, it is ensured that the water droplets generated by condensation can be effectively collected in the direction of airflow and discharged from the liquid outlet 24. At the same time, the baffle 25 can prevent the airflow from carrying water droplets towards the air outlet 22, thereby achieving efficient dehumidification and effective water vapor separation.

[0031] Furthermore, the dehumidification duct 20 has a bottom near the drawer 10, with a liquid outlet 24 located at the bottom, and a slope 26 inclined towards the liquid outlet 24 on the bottom. Thus, the slope 26 utilizes gravity to allow condensate to automatically flow towards the liquid outlet 24, effectively preventing condensate from spreading and remaining at the bottom of the duct, ensuring rapid drying inside the duct, maintaining stable dehumidification efficiency, and preventing bacterial growth.

[0032] Furthermore, the outlet 24 has inclined surfaces 26 on both sides in the width direction. Thus, by constructing inclined surfaces 26 on both sides of the outlet 24 in the width direction, a "V" or "U" shaped confluence channel is formed. This dual-sided flow-guiding design expands the collection range of condensate, ensuring that water droplets, regardless of their lateral position at the bottom of the duct, can be guided to the outlet 24, further optimizing the drainage path and improving the reliability of the drainage process.

[0033] The baffle plate 25 is flush with the edge of the liquid outlet 24 near the air outlet 22. By making the baffle plate 25 flush with the edge of the liquid outlet 24 near the air outlet 22, the baffle plate 25 can directly intercept all droplets attempting to flow towards the air outlet 22 with the airflow, shortening the path of the droplets across the liquid outlet 24 and ensuring that condensate is captured to the maximum extent and discharged from the liquid outlet 24.

[0034] Furthermore, a water guide pipe 27 is connected to the dehumidification duct 20. The water guide pipe 27 is located outside the dehumidification duct 20 and is connected to the liquid outlet 24. In this way, the water guide pipe 27 establishes a closed and directional drainage system for the discharged condensate. This system can directly guide the collected condensate to a specific evaporation area or drip tray of the refrigerator, preventing condensate from accidentally dripping from the duct outlet or around the drawer 10.

[0035] The cooling element 23 is a semiconductor cooling chip, which has a cold end and a hot end. The cold end is located inside the dehumidification duct 20, and the hot end is located outside the dehumidification duct 20. Using a semiconductor cooling chip as the cooling element 23, with its cold end located inside the duct, allows for direct cooling and dehumidification of the circulating air, resulting in fast response and precise temperature control. The hot end being located outside the duct facilitates heat dissipation. This structure eliminates the need for a compressor and refrigerant circulation system, making the entire dehumidification device compact, vibration-free, and low-noise.

[0036] Furthermore, a heat-conducting plate 29 is also provided inside the dehumidification duct 20. The heat-conducting plate 29 is located on the side of the semiconductor cooling chip near the air outlet 22, and is connected to the hot end via a heat pipe 28. In this way, the heat from the hot end of the semiconductor cooling chip is efficiently transferred to the heat-conducting plate 29 on the air outlet side of the duct through the heat pipe 28, cleverly utilizing the heat that would otherwise need to be dissipated. This allows the dry, cold air, after being cooled and dehumidified at the cold end, to be heated back to its original temperature by the heat-conducting plate 29 before flowing out of the duct, significantly reducing the temperature difference between the outlet air and the temperature inside the drawer 10. This effectively stabilizes the temperature environment of the storage chamber 11, improves the preservation quality, and reduces system energy consumption.

[0037] Furthermore, the dew point temperature t1 of the cold end of the semiconductor is determined based on the air temperature t and humidity q inside drawer 10. When the humidity inside drawer 10 is greater than 80%, the dehumidification mode is activated, and the cold end temperature of the semiconductor is set below t1. The fan 30 and the inlet and outlet dampers are opened, and the air inside drawer 10 flows through the cold end of the semiconductor and condenses. The condensate flows into the water guide pipe 27 through the baffle plate 25 and the sloped surface 26 behind the semiconductor. At this time, the moisture content of the air is reduced.

[0038] The dehumidification duct 20 includes a first section 201, a second section 202, and a third section 203. The first section 201 and the third section 203 are both connected to the drawer 10 and are perpendicular to it. The second section 202 connects the first section 201 and the third section 203, is perpendicular to both sections, and extends parallel to the upper side of the drawer 10. By designing the dehumidification duct 20 as a three-dimensional layout consisting of mutually perpendicular sections 201, 202, and 203, with the second section 202 extending parallel to the upper side of the drawer 10, a high degree of integration of the dehumidification system within the limited space at the top of the refrigerator drawer 10 is achieved. This effectively organizes the airflow path, ensures sufficient heat exchange and dehumidification travel, and makes the module structure compact, facilitating overall installation and arrangement within the refrigerator.

[0039] The second section 202 is equipped with a fan 30 to accelerate the airflow within the dehumidification duct 20.

[0040] The drawer 10 includes a lid 12 and a body 13. The lid 12 and the body 13 are connected to form a chamber 11. The dehumidification duct 20 is connected to the lid 12.

[0041] This utility model also provides a refrigerator, including the nitrogen preservation drawer 100 as described above.

[0042] Compared to existing technologies, by integrating a condensate drainage structure into the semiconductor refrigeration dehumidification duct 20, the refrigeration component 23 generates condensate, which is then discharged through the baffle plate 25, the liquid outlet 24, and the water guide pipe 27. Furthermore, the heat pipe 28 is used to achieve waste heat recovery. This not only achieves efficient and active dehumidification of the nitrogen preservation drawer 100, but also effectively maintains the stability of nitrogen concentration and temperature within the cavity. This solves the technical problems of low efficiency, nitrogen loss, and temperature fluctuations in traditional dehumidification methods, and significantly improves the food preservation effect.

[0043] The refrigerator can be controlled by a voice module, which is equipped with a controller, a voice receiving module, and a voice parsing module. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the nitrogen preservation drawer 100 to perform corresponding operations, thereby realizing intelligent control of the nitrogen preservation drawer 100 and improving the user experience.

[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A nitrogen-sealed food preservation drawer, characterized in that, include: Drawer (10) with an interior chamber (11); The dehumidification duct (20) is hollow and has an air inlet (21) and an air outlet (22) at both ends. The air inlet (21) and the air outlet (22) are connected to the chamber (11). The dehumidification duct (20) is equipped with a cooling component (23). The working temperature of the cooling component (23) is lower than the temperature inside the chamber (11). The dehumidification duct (20) is also provided with a baffle plate (25) and a liquid outlet (24). Along the first direction from the air inlet (21) to the air outlet (22), the liquid outlet (24) is located on the side of the refrigeration component (23) close to the air outlet (22), and the baffle plate (25) is provided on the side of the liquid outlet (24) close to the air outlet (22).

2. The nitrogen-sealed food preservation drawer according to claim 1, characterized in that, The dehumidification duct (20) has a bottom near the drawer (10), the liquid outlet (24) is opened at the bottom, and the bottom is constructed with a slope (26) inclined toward the liquid outlet (24).

3. The nitrogen-sealed food preservation drawer according to claim 2, characterized in that, The outlet (24) has inclined surfaces (26) on both sides in the width direction.

4. The nitrogen-sealed food preservation drawer according to claim 1, characterized in that, The baffle plate (25) is flush with the side edge of the liquid outlet (24) near the air outlet (22).

5. The nitrogen-sealed food preservation drawer according to claim 1, characterized in that, A water guide pipe (27) is connected to the dehumidification duct (20). The water guide pipe (27) is located outside the dehumidification duct (20) and is connected to the liquid outlet (24).

6. The nitrogen-sealed food preservation drawer according to claim 1, characterized in that, The cooling element (23) is configured as a semiconductor cooling chip, which has a cold end and a hot end. The cold end is located inside the dehumidification duct (20), and the hot end is located outside the dehumidification duct (20).

7. The nitrogen-sealed food preservation drawer according to claim 6, characterized in that, The dehumidification duct (20) is also provided with a heat-conducting plate (29), which is located on the side of the semiconductor cooling chip near the air outlet (22). The heat-conducting plate (29) is connected to the hot end through a heat pipe (28).

8. The nitrogen-sealed food preservation drawer according to claim 1, characterized in that, The dehumidification duct (20) includes a first section (201), a second section (202) and a third section (203). The first section (201) and the third section (203) are both connected to the drawer (10) and are arranged perpendicular to the drawer (10). The second section (202) connects the first section (201) and the third section (203). The second section (202) is arranged perpendicular to the first section (201) and the third section (203) and extends parallel to the upper side of the drawer (10).

9. The nitrogen-sealed food drawer according to claim 1, characterized in that, The drawer (10) includes a cover (12) and a body (13), the cover (12) and the body (13) are connected to form the chamber (11), and the dehumidification duct (20) is connected to the cover (12).

10. A refrigerator, characterized in that, Includes the nitrogen-sealed food drawer as described in any one of claims 1-9.

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