Fresh-keeping refrigerator

Abstract

The invention provides a fresh-keeping refrigerator. A first fresh-keeping special area and a second fresh-keeping special area are arranged at the bottom of a refrigerating chamber; the first fresh-keeping special area comprises a first drawer bucket and a first drawer cover plate, and is also provided with a first temperature control system; the temperature of the first fresh-keeping special area is precisely controlled through a sealed cavity, an independent air door and a peripheral air path, and condensation of the special area is prevented while precise moisturizing is achieved through a debugging film with a proper area; and the second fresh-keeping special area comprises a second drawer bucket, a second drawer cover plate and a second temperature control system. The second fresh-keeping special area achieves rapid refrigeration through a sealing cavity, an independent air door and an inner circulation air path, and precise temperature control is achieved through a cool storage agent with the appropriate phase change temperature and the appropriate weight. By arranging the adjacent temperature zones, the defect that a certain fresh-keeping special zone is preferentially refrigerated is overcome, the temperature difference between the first fresh-keeping special zone temperature zone and the second fresh-keeping special zone temperature zone is small, that is, a preferential refrigeration rule does not need to be adopted to sacrifice the functions of other chambers, and the stability of the temperature of the chambers is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and more specifically to a fresh-keeping refrigerator. Background Art

[0002] As living standards improve, consumers have an increasing demand for food preservation. To meet this demand, refrigerators have special fresh-keeping zones with constant temperature and humidity in the refrigeration space, aiming to achieve precise food preservation. These fresh-keeping zones effectively extend the shelf life of food by maintaining a stable temperature and humidity environment while maintaining the flavor and taste of the food.

[0003] There are various technical solutions used in refrigerator fresh-keeping areas. A common method is to achieve sealing through a sealed cavity to reduce the refrigerator circulating air from entering the special area, thereby reducing the exchange of heat and humidity and achieving temperature and humidity stability. This method is prone to condensation inside the special area. Alternatively, a relatively sealed cavity is set in the dead zone of refrigerator air circulation, and gas exchange is achieved by setting micropores on the wall of the sealed cavity. Alternatively, an embracing air circulation sealed area is designed by setting an air circulation route outside the sealed area.

[0004] However, when a sealed cavity is used, although the fluctuation of temperature and humidity can be reduced, the problem of condensation is difficult to avoid. When a microporous gas exchange or an enveloping air circulation sealed area is used, the cooling speed is slow or the temperature control is not precise. In addition, in order to accurately control the temperature of the existing fresh-keeping area, the priority cooling rule is adopted, which sacrifices the temperature of other functional areas and fails to take into account the functionality of the overall refrigerator. Summary of the invention

[0005] In order to solve the above-mentioned existing related technologies, a water seal is set at the drain outlet. However, when the user opens the door and closes it again, the hot and humid air from the outside enters the box and the air in the box cools down rapidly, resulting in a large instantaneous negative pressure indoors and outdoors, making it very difficult to open the door again.

[0006] The present application provides a fresh-keeping refrigerator, comprising: a refrigerating chamber;

[0007] The bottom of the refrigerating chamber is provided with a first fresh-keeping area and a second fresh-keeping area;

[0008] The first fresh-keeping area includes a first drawer and a first drawer cover, wherein the first drawer cover covers the first drawer, and the first fresh-keeping area is further provided with a first temperature control system, wherein the first temperature control system is configured to control the internal temperature of the first fresh-keeping area;

[0009] The second fresh-keeping area includes a second drawer and a second drawer cover, wherein the second drawer cover covers the second drawer. The second fresh-keeping area is also provided with a second temperature control system, and the second temperature control system is configured to control the internal temperature of the first fresh-keeping area.

[0010] In a feasible implementation, the first temperature control system includes: a first air supply port, a first air door, a first temperature sensor and a first controller;

[0011] The first controller is electrically connected to the first damper and the first temperature sensor;

[0012] The lower edge of the first air supply port is arranged on one side above the first drawer cover plate and close to the rear wall of the first fresh-keeping area, the first air door is rotatably connected to the first air supply port, and the first temperature sensor is arranged on the inner wall of the first drawer cover plate;

[0013] The first temperature sensor is configured to: monitor the temperature in the first fresh-keeping area, obtain first temperature data, and send the first temperature data to the first controller;

[0014] The first controller is configured to: receive the first temperature data, compare the first temperature data with a preset first temperature threshold, obtain a first comparison result, and control the opening and closing of the first damper according to the first comparison result;

[0015] The second temperature control system includes: a second air supply port, a second air door, a second temperature sensor and a second controller;

[0016] The second controller is electrically connected to the second damper and the second temperature sensor;

[0017] The lower edge of the second air supply port is arranged on one side above the second drawer cover plate and close to the rear wall of the second fresh-keeping area, the second air door is rotatably connected to the second air supply port, and the second temperature sensor is arranged on the inner wall of the second drawer cover plate;

[0018] The second temperature sensor is configured to monitor the temperature in the second fresh-keeping area, obtain second temperature data, and send the second temperature data to the second controller;

[0019] The second controller is configured to: receive the second temperature data, compare the second temperature data with a preset second temperature threshold, obtain a second comparison result, and control the opening and closing of the second damper according to the second comparison result.

[0020] In a feasible implementation, the preset first temperature threshold includes a first power-on temperature threshold and a first power-off temperature threshold, and the preset second temperature threshold includes a second power-on temperature threshold and a second power-off temperature threshold;

[0021] The first controller is further configured to: when the first temperature data is greater than or equal to the first startup temperature threshold, control the first damper to open; when the first temperature data is less than or equal to the first shutdown temperature threshold, control the first damper to close;

[0022] The second controller is further configured to: control the second damper to open when the second temperature data is greater than or equal to the second startup temperature threshold, and control the second damper to close when the second temperature data is less than or equal to the second shutdown temperature threshold.

[0023] In a feasible implementation, the first power-on temperature threshold is 0°C, and the first power-off temperature threshold is 3°C; the second power-on temperature threshold is -4°C, and the second power-off temperature threshold is 0°C.

[0024] In a feasible implementation, both the first damper and the second damper are double damper structures;

[0025] The first air door is arranged between the first fresh-keeping area and the refrigerating chamber and close to the left side of the refrigerating chamber;

[0026] The second air door is arranged between the second fresh-keeping area and the refrigerating chamber and is close to the right side of the refrigerating chamber.

[0027] In a feasible implementation, the air supply direction of the first air supply port forms a first air duct along the upper surface of the first drawer cover, and the first air duct surrounds the outside of the first fresh-keeping area;

[0028] The air supply direction of the second air supply port is perpendicular to the bottom of the inner cavity of the second fresh-keeping area to form a second air duct, and the second air duct runs through the interior of the second fresh-keeping area.

[0029] In a feasible implementation, a humidity-controlling film is embedded in the middle of the first drawer cover of the first fresh-keeping zone, a first sealed cavity is formed between the first drawer cover and the first drawer, and the humidity-controlling film covers the top of the first sealed cavity.

[0030] In a feasible implementation, the relationship between the area of ​​the humidity-controlling film and the volume of the first fresh-keeping area is:

[0031] S=(150+25V1)cm 2 ;

[0032] Wherein, S is the area of ​​the humidity-controlling membrane, V1 is the volume of the first fresh-keeping area, cm 2 is the unit of humidity control membrane area.

[0033] In a feasible implementation, a coolant is installed in the middle of the inner wall of the second drawer cover of the second fresh-keeping area, a second sealed cavity is formed between the second drawer cover and the second drawer, and the coolant is fixed in the middle of the second sealed cavity.

[0034] In a feasible implementation, the phase change temperature of the coolant is -1°C to -5°C, and the relationship between the weight of the coolant and the volume of the second fresh-keeping area is:

[0035] m=30V2 g;

[0036] Wherein, m is the weight of the coolant, V2 is the volume of the second fresh-keeping area, and g is the weight unit of the coolant.

[0037] As can be seen from the above content, the present application provides a fresh-keeping refrigerator, in which the first fresh-keeping zone is precisely temperature-controlled through a sealed cavity, an independent damper and an external air duct, and a suitable area of ​​the adjustment film is used to achieve precise moisture retention while preventing condensation in the zone; the second fresh-keeping zone is rapidly cooled through a sealed cavity, an independent damper and an internal circulation air duct, and precise temperature control is achieved through a suitable phase change temperature and a suitable weight of a refrigerant. The disadvantage of preferentially cooling a certain fresh-keeping zone is solved by setting adjacent temperature zones, and the temperature difference between the first fresh-keeping zone and the second fresh-keeping zone is small, that is, there is no need to sacrifice the functions of other compartments by adopting the priority cooling rule, thus ensuring the stability of the compartment temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the implementation of the present invention, and together with the specification are used to explain the principles of the embodiments of the present invention. Obviously, the accompanying drawings described below are only some embodiments of the implementation of the present invention, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0039] Figure 1 It is a schematic diagram of the structure of the first fresh-keeping area and the second fresh-keeping area of ​​the refrigerating chamber of the fresh-keeping refrigerator shown in the embodiment of the present application;

[0040] Figure 2 It is a schematic diagram of the structure of the fresh-keeping refrigerator air duct shown in the embodiment of the present application.

[0041] Description of Figure Numbers:

[0042] 1-First fresh-keeping area; 2-Second fresh-keeping area; 3-Humidity-controlling film; 4-Cooling agent;

[0043] 111 - first air supply outlet; 112 - first air door; 113 - first temperature sensor; 211 - second air supply outlet; 212 - second air door; 213 - second temperature sensor. DETAILED DESCRIPTION

[0044] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the embodiments of the present invention will be more comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, many specific details are provided to provide a full understanding of the implementation of the embodiments of the present invention.

[0045] The refrigerator fresh-keeping area is an important functional area developed by the refrigerator industry to meet consumers' demand for food freshness. At present, the technical solutions to achieve constant temperature and humidity in the fresh-keeping area mainly include sealed cavities, microporous gas exchange, and enveloping air circulation sealed areas. However, these technical solutions all have some problems.

[0046] Although the sealed cavity solution can effectively reduce the exchange of heat and humidity and achieve temperature and humidity stability, it is easy to cause condensation inside the zone, affecting the preservation of food. Although the microporous gas exchange solution can reduce the condensation problem, the cooling speed of the zone is slow and the temperature control is not precise enough. The enveloping air circulation sealed zone solution requires setting priority cooling rules, which often sacrifices the temperature of other functional zones to achieve the preservation effect, affecting the overall functionality of the refrigerator.

[0047] In response to these problems, this application proposes a new fresh-keeping refrigerator solution. This solution solves the contradiction between temperature and humidity fluctuations and condensation, as well as the problem of inaccurate temperature control in the prior art by setting up a first fresh-keeping area and a second fresh-keeping area at the bottom of the refrigerator compartment, and equipping each with an independent temperature control system. At the same time, this solution avoids the impact of the priority refrigeration rule on other functional areas, optimizes the overall function of the refrigerator, and provides consumers with a more accurate and efficient food preservation solution.

[0048] Specifically, the present application embodiment provides a fresh-keeping refrigerator, referring to Figure 1 As shown, it comprises: a refrigerating chamber; a first fresh-keeping area 1 and a second fresh-keeping area 2 are arranged at the bottom of the refrigerating chamber.

[0049] The first fresh-keeping area 1 comprises a first drawer and a first drawer cover, and the first drawer cover covers the first drawer.

[0050] The first drawer is usually located in a specific area at the bottom of the refrigerator, and is used to store food with high temperature and humidity requirements. The design of the drawer is convenient for users to take and put food, while maintaining the closedness of the special area. The first drawer cover covers the first drawer, further enhancing the sealing of the special area and reducing the impact of the external environment on the temperature and humidity inside the special area.

[0051] The first fresh-keeping area 1 is also provided with a first temperature control system, which is configured to control the temperature inside the first fresh-keeping area 1. The first temperature control system 11 is independently configured inside the first fresh-keeping area 1, and accurately controls the temperature inside the area to achieve accurate preservation of food. The system can automatically adjust the temperature according to the preset fresh-keeping parameters to ensure the stability of the temperature and humidity inside the area.

[0052] The second fresh-keeping area 2 includes a second drawer and a second drawer cover. The second drawer cover covers the second drawer. The second drawer is similar to the first fresh-keeping area 1 and is located in another specific area at the bottom of the refrigerator for storing different types of food. The design of the second drawer also focuses on practicality and closure. The second drawer cover covers the second drawer, which enhances the sealing inside the area and helps maintain the stability of the temperature and humidity inside the area.

[0053] The second fresh-keeping zone 2 is also provided with a second temperature control system, which is configured to control the internal temperature of the first fresh-keeping zone 1 .

[0054] The second temperature control system is independently configured inside the second fresh-keeping area 2, and satisfies the fresh-keeping requirements of different types of food by accurately controlling the temperature inside the area. Similar to the first temperature control system, this system also has the function of automatically adjusting the temperature.

[0055] It is understandable that the fresh-keeping refrigerator solution of the embodiment of the present application can be widely used in homes, supermarkets, restaurants and other places in practical applications. Users can choose a suitable fresh-keeping area for storage according to the type of food and the need for fresh-keeping. For example, for fruit and vegetable foods that require strict control of temperature and humidity, the first fresh-keeping area 1 can be selected for storage; and for meat, fish and other foods, the second fresh-keeping area 2 can be selected for storage. In this way, users can easily achieve accurate food preservation and meet the diverse needs of daily life.

[0056] The fresh-keeping refrigerator of the embodiment of the present application improves the fresh-keeping effect of food and extends the shelf life of food by accurately controlling the temperature and humidity inside the special zone. It avoids the influence of the priority refrigeration rule on other functional special zones, so that the refrigerator can simultaneously meet the fresh-keeping needs of different types of food, improving the overall functionality of the refrigerator. At the same time, users can choose different fresh-keeping special zones for storage according to the type of food, which is easy to operate and has a significant fresh-keeping effect, improving the user experience.

[0057] In some embodiments of the present application, reference Figure 1 and Figure 2 As shown, the first temperature control system includes: a first air supply port 111, a first air door 112, a first temperature sensor 113 and a first controller; the first controller is electrically connected to the first air door 112 and the first temperature sensor 113.

[0058] The lower edge of the first air supply outlet 111 is arranged on one side above the first drawer cover and close to the rear wall of the first fresh-keeping area 1, the first air door 112 is rotatably connected to the first air supply outlet 111, and the first temperature sensor 113 is arranged on the inner wall of the first drawer cover; the first temperature sensor 113 is configured to: monitor the temperature in the first fresh-keeping area 1, obtain first temperature data, and send it to the first controller; the first controller is configured to: receive the first temperature data, compare the first temperature data with a preset first temperature threshold, obtain a first comparison result, and control the opening and closing of the first air door 112 according to the first comparison result.

[0059] Among them, the first air supply port 111 is used to send cold air into the first fresh-keeping area 1 to achieve temperature adjustment. The design of the first air supply port 111 ensures the uniform distribution of cold air. The first damper 112 is used to control the opening and closing of the first air supply port 111. The opening and closing state of the first damper 112 determines the circulation of cold air, thereby achieving precise adjustment of the internal temperature of the first fresh-keeping area 1. The first temperature sensor 113 can obtain the temperature data inside the first fresh-keeping area 1 in real time, and send it to the first controller for processing. The first controller receives the temperature data from the first temperature sensor 113, compares it according to the preset first temperature threshold, and then controls the opening and closing of the first air supply port 111 according to the comparison result to achieve precise temperature control.

[0060] The second temperature control system includes: a second air supply port 211 , a second air door 212 , a second temperature sensor 213 and a second controller; the second controller is electrically connected to the second air door 212 and the second temperature sensor 213 .

[0061] The lower edge of the second air supply outlet 211 is arranged on one side above the second drawer cover and close to the rear wall of the second fresh-keeping area 2, the second air door 212 is rotatably connected to the second air supply outlet 211, and the second temperature sensor 213 is arranged on the inner wall of the second drawer cover; the second temperature sensor 213 is configured to monitor the temperature in the second fresh-keeping area 2, obtain second temperature data, and send it to the second controller; the second controller is configured to: receive the second temperature data, compare the second temperature data with a preset second temperature threshold, obtain a second comparison result, and control the opening and closing of the second air door 212 according to the second comparison result.

[0062] The structure of the second temperature control system is similar to that of the first temperature control system, but it is used to control the temperature of the second fresh-keeping area 2, wherein the second air supply port 211 is used to send cold air into the second fresh-keeping area 2 to achieve temperature regulation. The design of the second air supply port 211 ensures the uniform distribution of cold air. The second damper 212 is used to control the opening and closing of the second air supply port 211. The opening and closing state of the second damper 212 determines the circulation of cold air, thereby achieving precise regulation of the temperature inside the second fresh-keeping area 1. The second temperature sensor 213 can obtain the temperature data inside the second fresh-keeping area 2 in real time and send it to the second controller for processing. The second controller receives the temperature data from the second temperature sensor 213, compares it according to the preset second temperature threshold, and then controls the opening and closing of the second air supply port 211 according to the comparison result to achieve precise temperature control.

[0063] In actual application, the fresh-keeping refrigerator solution can be flexibly configured according to the specific needs of users. For example, for fruits and vegetables that need to be stored at low temperatures, they can be stored in the first fresh-keeping area 1, and the temperature can be accurately controlled by the first temperature control system; while for meat, fish and other foods that need to be stored at higher temperatures, they can be stored in the second fresh-keeping area 2, and the temperature can be controlled by the second temperature control system. In this way, users can choose the appropriate area for storage according to the type of food and preservation needs, and achieve accurate preservation of food. At the same time, this solution is also suitable for a variety of places such as homes, supermarkets, and restaurants to meet the needs of different users.

[0064] The embodiment of the present application solves the problem of inaccurate temperature control in the prior art by configuring a first temperature control system and a second temperature control system. By real-time monitoring of the temperature inside the zone, and comparison and control according to a preset temperature threshold, precise temperature adjustment is achieved. Specifically, by real-time monitoring and precise control of the temperature inside the zone, the accuracy of temperature control is improved, ensuring the preservation of food. The independent temperature control system avoids temperature interference between different zones and enhances the stability of the system. Users can choose a suitable fresh-keeping zone for storage according to the type of food, and achieve long-term preservation of food through precise temperature control, thereby improving the user experience. This control method not only improves the stability of temperature, but also avoids the impact of temperature fluctuations on the preservation of food.

[0065] In some embodiments of the present application, the preset first temperature threshold includes a first power-on temperature threshold and a first power-off temperature threshold, and the preset second temperature threshold includes a second power-on temperature threshold and a second power-off temperature threshold. In some embodiments, the first power-on temperature threshold is 0°C, and the first power-off temperature threshold is 3°C; the second power-on temperature threshold is -4°C, and the second power-off temperature threshold is 0°C.

[0066] The first controller is further configured to: when the first temperature data is greater than or equal to the first startup temperature threshold, control the first damper 112 to open, and when the first temperature data is less than or equal to the first shutdown temperature threshold, control the first damper 112 to close. The second controller is further configured to: when the second temperature data is greater than or equal to the second startup temperature threshold, control the second damper 212 to open, and when the second temperature data is less than or equal to the second shutdown temperature threshold, control the second damper 212 to close.

[0067] This solution achieves precise control of the temperature of two different fresh-keeping zones by setting two different temperature thresholds (the first temperature threshold and the second temperature threshold) and corresponding two damper controllers (the first controller and the second controller). When the temperature data reaches or exceeds the power-on temperature threshold, the corresponding first damper 112 or second damper 212 opens to allow cold air to enter to lower the temperature; when the temperature data drops to or below the power-off temperature threshold, the first damper 112 or the second damper 212 closes to keep the temperature stable. This method achieves precise control of the temperature of the two fresh-keeping zones and avoids the influence of temperature fluctuations on the food preservation effect.

[0068] Specifically, in a fresh-keeping refrigerator, perishable foods can be stored in the first fresh-keeping area (temperature controlled at 0-3°C) according to the preservation requirements of different foods, and meat, seafood, etc. that need to be preserved at a lower temperature can be stored in the second fresh-keeping area (-4°C-0°C). Through precise temperature control, it can ensure that all kinds of food are stored in the optimal temperature environment and extend the shelf life of food. At the same time, the embodiments of the present application are also applicable to commercial places such as supermarkets and restaurants to meet their diverse needs for food preservation and storage.

[0069] This embodiment achieves precise control of the temperature of the two fresh-keeping zones by setting specific temperature thresholds and control strategies, thereby improving the food preservation effect. The on / off state of the damper is controlled in real time according to the temperature data, thereby avoiding unnecessary energy consumption and improving the energy efficiency of the system. The appropriate fresh-keeping zone can be selected for storage according to the food type, and the food can be kept fresh for a long time through precise temperature control, thereby improving the user experience. At the same time, users can flexibly adjust the temperature threshold and control strategy according to different food types and preservation requirements, which has strong adaptability.

[0070] In some embodiments of the present application, the first air door 112 and the second air door 212 are both double air door structures; the first air door 112 is arranged between the first fresh-keeping area 1 and the refrigerator, and is close to the left side of the refrigerator; the second air door 212 is arranged between the second fresh-keeping area 2 and the refrigerator, and is close to the right side of the refrigerator.

[0071] The first air door 112 and the second air door 212 are arranged between the two fresh-keeping areas and the refrigerating chamber, the first air door 112 is close to the left side of the refrigerating chamber, and the second air door 212 is close to the right side of the refrigerating chamber. The double air door structure means that the first air door 112 and the second air door 212 are air doors with a double opening and closing mechanism, which are used to more finely control the flow of cold air. This allows the temperature of the two fresh-keeping areas to be kept stable while minimizing the impact on the temperature in the refrigerating chamber.

[0072] In some embodiments of the present application, the air supply direction of the first air supply port 111 forms a first air duct along the upper surface of the first drawer cover, and the first air duct surrounds the outside of the first fresh-keeping zone 1; the first air duct can blow cold air evenly to the surrounding of the first fresh-keeping zone 1, and through the surrounding air supply method, ensure that the temperature distribution in the first fresh-keeping zone 1 is more uniform, thereby improving the preservation effect.

[0073] The air supply direction of the second air supply port 211 is perpendicular to the bottom of the inner cavity of the second fresh-keeping area 2, forming a second air duct, which runs through the second fresh-keeping area 2. The second air duct can blow cold air directly into the second fresh-keeping area 2, and through the vertical air supply, the temperature in the second fresh-keeping area 2 is quickly reduced, and the convection of the internal air is promoted, thereby improving the fresh-keeping efficiency.

[0074] This embodiment optimizes the air supply structure and air duct design to make the temperature distribution in the fresh-keeping area more uniform, thereby extending the fresh-keeping period of the food. Users can choose to place the food in the first fresh-keeping area 1 or the second fresh-keeping area 2 according to the fresh-keeping requirements of different foods, and enjoy a more personalized fresh-keeping experience.

[0075] In some embodiments of the present application, a humidity-controlling film 3 is embedded in the middle of the first drawer cover of the first fresh-keeping zone 1, a first sealed cavity is formed between the first drawer cover and the first drawer, and the humidity-controlling film 3 covers the top of the first sealed cavity.

[0076] The humidity-controlling film 3 is a film with special functions, which can automatically adjust the humidity level inside it according to the humidity changes in the environment. When the humidity in the first fresh-keeping area 1 is too high, the humidity-controlling film 3 can absorb excess moisture; and when the humidity is too low, it can release the stored moisture, thereby maintaining a relatively stable humidity environment.

[0077] In some embodiments of the present application, the relationship between the area of ​​the humidity-controlling film 3 and the volume of the first fresh-keeping zone 1 is:

[0078] S=150+25V1cm 2 ;

[0079] Where S is the area of ​​the humidity-control film 3, V1 is the volume of the first fresh-keeping area 1, cm 2 It is the unit of humidity control film 3 area.

[0080] According to the above formula, no matter how large the volume of the first fresh-keeping area 1 is, the humidity-adjusting film 3 can provide appropriate humidity-adjusting capability to meet different fresh-keeping requirements. By calculating the corresponding relationship between the humidity-adjusting film 3 and the volume of the first fresh-keeping area 1, the condensation problem in the traditional fresh-keeping device is effectively solved.

[0081] In some embodiments of the present application, a refrigerant 4 is installed in the middle of the inner wall of the second drawer cover of the second fresh-keeping zone 2, a second sealed cavity is formed between the second drawer cover and the second drawer, and the refrigerant 4 is fixed in the middle of the second sealed cavity.

[0082] In some embodiments of the present application, the phase change temperature of the coolant 4 is -1°C to -5°C, and the relationship between the weight of the coolant 4 and the volume of the second fresh-keeping area 2 is:

[0083] m=30V2 g;

[0084] Wherein, m is the weight of the refrigerant 4 , V2 is the volume of the second fresh-keeping zone 2 , and g is the weight unit of the refrigerant 4 .

[0085] The corresponding relationship between the weight and volume of the cold storage agent 4 ensures that the cold storage agent 4 can efficiently store and release cold energy to meet the refrigeration requirements of the second fresh-keeping area 2. In this way, no matter how large the volume of the second fresh-keeping area 2 is, the cold storage agent 4 can provide appropriate refrigeration capacity to ensure the freshness of the food.

[0086] The corresponding relationship between the weight and volume of the cold storage agent 4 ensures that the cold storage agent 4 can efficiently store and release cold energy to meet the refrigeration requirements of the second fresh-keeping area 2. In this way, no matter how large the volume of the second fresh-keeping area 2 is, the cold storage agent 4 can provide appropriate refrigeration capacity to ensure the freshness of the food.

[0087] As can be seen from the above content, the present application provides a fresh-keeping refrigerator, the first fresh-keeping area is equipped with a first drawer cover plate, on which a humidity-adjusting film is inlaid, and a sealed cavity is formed between the first drawer bucket for humidity adjustment. The second fresh-keeping area is provided with a second drawer cover plate, and a refrigerant is installed on the inner wall, which also forms a sealed cavity with the second drawer bucket to achieve the refrigeration function. The disadvantage of preferentially refrigerating a certain fresh-keeping area is solved by setting adjacent temperature zones, and the temperature difference between the first fresh-keeping area temperature zone and the second fresh-keeping area temperature zone is small, that is, there is no need to adopt the priority refrigeration rule and sacrifice the functions of other compartments, ensuring the stability of the compartment temperature. Users can classify food and place it in the first or second fresh-keeping area according to the type of food and the need for fresh-keeping. The humidity-adjusting film automatically adjusts the humidity in the first fresh-keeping area without manual intervention. The refrigerant automatically stores and releases cold in the second fresh-keeping area according to temperature fluctuations to maintain a stable refrigeration environment. The condensation problem is solved. The first air supply port forms an air duct surrounding the first fresh-keeping area, and the second air supply port vertically supplies air to the inside of the second fresh-keeping area. Two air ducts ensure air circulation and uniform temperature distribution in the two fresh-keeping areas.

[0088] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the disclosure herein. This application is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

Claims

1. A fresh-keeping refrigerator, characterized in that: include: Cold room; The bottom of the refrigerating chamber is provided with a first fresh-keeping area (1) and a second fresh-keeping area (2); The first fresh-keeping area (1) comprises a first drawer and a first drawer cover, wherein the first drawer cover covers the first drawer, and the first fresh-keeping area (1) is also provided with a first temperature control system, wherein the first temperature control system is configured to control the internal temperature of the first fresh-keeping area (1); The second fresh-keeping area (2) comprises a second drawer and a second drawer cover, wherein the second drawer cover covers the second drawer. The second fresh-keeping area (2) is also provided with a second temperature control system, wherein the second temperature control system is configured to control the internal temperature of the first fresh-keeping area (1).

2. A fresh-keeping refrigerator according to claim 1, characterized in that: The first temperature control system comprises: a first air supply port (111), a first air door (112), a first temperature sensor (113) and a first controller; The first controller is electrically connected to the first damper (112) and the first temperature sensor (113); The lower edge of the first air supply port (111) is arranged on one side above the first drawer cover plate and close to the rear wall of the first fresh-keeping area (1); the first air door (112) is rotatably connected to the first air supply port (111); and the first temperature sensor (113) is arranged on the inner wall of the first drawer cover plate; The first temperature sensor (113) is configured to: monitor the temperature in the first fresh-keeping area (1), obtain first temperature data, and send the first temperature data to the first controller; The first controller is configured to: receive the first temperature data, compare the first temperature data with a preset first temperature threshold, obtain a first comparison result, and control the opening and closing of the first damper (112) according to the first comparison result; The second temperature control system comprises: a second air supply port (211), a second air door (212), a second temperature sensor (213) and a second controller; The second controller is electrically connected to the second damper (212) and the second temperature sensor (213); The lower edge of the second air supply port (211) is arranged on one side above the second drawer cover plate and close to the rear wall of the second fresh-keeping area (2); the second air door (212) is rotatably connected to the second air supply port (211); and the second temperature sensor (213) is arranged on the inner wall of the second drawer cover plate; The second temperature sensor (213) is configured to monitor the temperature in the second fresh-keeping area (2), obtain second temperature data, and send the second temperature data to the second controller; The second controller is configured to: receive the second temperature data, compare the second temperature data with a preset second temperature threshold, obtain a second comparison result, and control the opening and closing of the second damper (212) according to the second comparison result.

3. A fresh-keeping refrigerator according to claim 2, characterized in that: The preset first temperature threshold includes a first power-on temperature threshold and a first power-off temperature threshold, and the preset second temperature threshold includes a second power-on temperature threshold and a second power-off temperature threshold; The first controller is further configured to: when the first temperature data is greater than or equal to the first startup temperature threshold, control the first damper (112) to open; and when the first temperature data is less than or equal to the first shutdown temperature threshold, control the first damper (112) to close; The second controller is further configured to: when the second temperature data is greater than or equal to the second startup temperature threshold, control the second damper (212) to open; and when the second temperature data is less than or equal to the second shutdown temperature threshold, control the second damper (212) to close.

4. A fresh-keeping refrigerator according to claim 3, characterized in that: The first startup temperature threshold is 0°C, and the first shutdown temperature threshold is 3°C; the second startup temperature threshold is -4°C, and the second shutdown temperature threshold is 0°C.

5. A fresh-keeping refrigerator according to claim 2, characterized in that: The first damper (112) and the second damper (212) are both double damper structures; The first air door (112) is arranged between the first fresh-keeping area (1) and the refrigerating chamber, and is close to the left side of the refrigerating chamber; The second air door (212) is arranged between the second fresh-keeping area (2) and the refrigerating chamber, and is close to the right side of the refrigerating chamber.

6. A fresh-keeping refrigerator according to claim 2, characterized in that: The air supply direction of the first air supply port (111) forms a first air duct along the upper surface of the first drawer cover, and the first air duct surrounds the outside of the first fresh-keeping area (1); The air supply direction of the second air supply port (211) is perpendicular to the bottom of the inner cavity of the second fresh-keeping zone (2), forming a second air duct, and the second air duct runs through the interior of the second fresh-keeping zone (2).

7. The fresh-keeping refrigerator according to claim 1, characterized in that: A humidity-regulating film (3) is embedded in the middle of the first drawer cover of the first fresh-keeping zone (1); a first sealed cavity is formed between the first drawer cover and the first drawer; and the humidity-regulating film (3) covers the top of the first sealed cavity.

8. The fresh-keeping refrigerator according to claim 7, characterized in that: The relationship between the area of ​​the humidity-controlling film (3) and the volume of the first fresh-keeping zone (1) is: S=(150+25V1)cm 2 ; Wherein, S is the area of ​​the humidity-controlling film (3), V1 is the volume of the first fresh-keeping zone (1), cm 2 It is the area unit of the humidity control film (3).

9. The fresh-keeping refrigerator according to claim 1, characterized in that: A cooling agent (4) is installed in the middle of the inner wall of the second drawer cover of the second fresh-keeping zone (2); a second sealed cavity is formed between the second drawer cover and the second drawer, and the cooling agent (4) is fixed in the middle of the second sealed cavity.

10. The fresh-keeping refrigerator according to claim 9, characterized in that: The phase change temperature of the coolant (4) is -1°C to -5°C, and the relationship between the weight of the coolant (4) and the volume of the second fresh-keeping area (2) is: m=30V2 g; Wherein, m is the weight of the cooling agent (4), V2 is the volume of the second fresh-keeping zone (2), and g is the weight unit of the cooling agent (4).

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