A type of refrigerator

Abstract

This application provides a refrigerator with a first and a second preservation zone at the bottom of the refrigerator compartment. The first preservation zone includes a first drawer and a first drawer cover, and is equipped with a first temperature control system. The first preservation zone achieves precise temperature control through a sealed cavity, independent air damper, and external airflow, and uses an appropriately sized adjustment film to achieve precise humidification while preventing condensation in the zone. The second preservation zone includes a second drawer, a second drawer cover, and is equipped with a second temperature control system. The second preservation zone achieves rapid cooling through a sealed cavity, independent air damper, and internal circulation airflow, and achieves precise temperature control through a refrigerant with an appropriate phase change temperature and weight. By setting adjacent temperature zones, the drawbacks of prioritizing cooling a particular preservation zone are solved. Furthermore, the temperature difference between the first and second preservation zones is small, meaning that there is no need to sacrifice the function of other compartments by adopting a priority cooling rule, thus ensuring the stability of the compartment temperature.

Description

Technical Field

[0001] This application relates to the field of household appliance technology, and more specifically to a food preservation refrigerator. Background Technology

[0002] As living standards improve, consumers' demand for food preservation is increasing. To meet this demand, refrigerators have specially designed preservation zones with constant temperature and humidity to achieve precise food preservation. These preservation zones effectively extend the shelf life of food while maintaining a stable temperature and humidity environment, thus preserving its flavor and texture.

[0003] Various technical solutions are used in the refrigerator's food preservation zone. A common method is to achieve a seal through a sealed cavity to reduce the amount of recirculated air entering the zone, thereby reducing heat and humidity exchange and achieving temperature and humidity stability. However, this method is prone to condensation inside the zone. Alternatively, a relatively sealed cavity can be set up in the refrigerator's air circulation dead zone, with gas exchange achieved through micropores on the periphery of the sealed cavity. Another option is to design a wraparound air circulation sealed zone, with air circulation routes set around the perimeter of the sealed zone.

[0004] However, while a sealed cavity can reduce temperature and humidity fluctuations, condensation is difficult to avoid. Conversely, using microporous gas exchange or a wraparound air circulation sealed zone can result in slow cooling or inaccurate temperature control. Furthermore, existing preservation zones prioritize cooling to achieve precise temperature control, sacrificing the temperature of other functional zones and failing to maintain the overall functionality of the refrigerator. Summary of the Invention

[0005] To address the issue that existing technologies involve setting a water seal at the drain outlet, but when the user opens and closes the door again, the hot and humid outside air enters the box and cools down rapidly, resulting in a large instantaneous negative pressure between the inside and outside, making it very difficult to open the door again.

[0006] This application provides a refrigerator for preserving food, including: a refrigerator compartment;

[0007] The bottom of the cold storage compartment is provided with a first preservation zone and a second preservation zone.

[0008] The first preservation zone includes a first drawer and a first drawer cover, the first drawer cover covering the first drawer. The first preservation zone is also equipped with a first temperature control system, which is configured to control the internal temperature of the first preservation zone.

[0009] The second preservation zone includes a second drawer and a second drawer cover, with the second drawer cover covering the second drawer. The second preservation zone is also equipped with a second temperature control system, which is configured to control the internal temperature of the first preservation zone.

[0010] In one feasible implementation, the first temperature control system includes: a first air outlet, a first damper, 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 outlet is located on the side above the first drawer cover near the rear wall of the first preservation area. The first air damper is rotatably connected to the first air outlet. The first temperature sensor is located on the inner wall of the first drawer cover.

[0013] The first temperature sensor is configured to monitor the temperature within the first preservation zone, obtain first temperature data, and send it 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 to 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 outlet, a second damper, 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 outlet is located on the side above the second drawer cover near the rear wall of the second preservation area. The second air damper is rotatably connected to the second air outlet. The second temperature sensor is located on the inner wall of the second drawer cover.

[0018] The second temperature sensor is configured to monitor the temperature within the second preservation zone, obtain second temperature data, and send it 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 to obtain a second comparison result, and control the opening and closing of the second damper according to the second comparison result.

[0020] In one 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: control the first damper to open when the first temperature data is greater than or equal to the first power-on temperature threshold, and control the first damper to close when the first temperature data is less than or equal to the first power-off temperature threshold;

[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 start-up 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 one feasible implementation, the first power-on temperature threshold is 0°C, 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 one feasible implementation, both the first damper and the second damper are double damper structures.

[0025] The first air damper is located between the first preservation zone and the cold storage compartment, and is close to the left side of the cold storage compartment;

[0026] The second air damper is located between the second preservation zone and the cold storage compartment, and is close to the right side of the cold storage compartment.

[0027] In one feasible implementation, the air supply direction of the first air outlet 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 preservation area.

[0028] The air supply direction of the second air outlet is perpendicular to the bottom of the inner cavity of the second preservation zone, forming a second air duct that runs through the interior of the second preservation zone.

[0029] In one feasible implementation, a humidity-regulating film is embedded in the middle of the first drawer cover of the first preservation area, and a first sealed cavity is formed between the first drawer cover and the first drawer drawer, with the humidity-regulating film covering the top of the first sealed cavity.

[0030] In one feasible implementation, the relationship between the area of ​​the humidity-regulating film and the volume of the first preservation zone is as follows:

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

[0032] Where S is the area of ​​the humidity-regulating film, and V1 is the volume of the first preservation zone (cm²). 2 The unit for the area of ​​the humidity-regulating film is denoted as .

[0033] In one feasible implementation, a cold storage agent is installed in the middle of the inner wall of the second drawer cover of the second preservation area, and a second sealed cavity is formed between the second drawer cover and the second drawer, with the cold storage agent fixed in the middle of the second sealed cavity.

[0034] In one feasible implementation, the phase change temperature of the cold storage agent is -1°C to -5°C, and the relationship between the weight of the cold storage agent and the volume of the second preservation zone is as follows:

[0035] m=30V2g;

[0036] Where m is the weight of the cold storage agent, V2 is the volume of the second preservation zone, and g is the weight unit of the cold storage agent.

[0037] As described above, this application provides a refrigerator for food preservation. The first preservation zone achieves precise temperature control through a sealed cavity, independent air vents, and external airflow. A suitable area of ​​adjustment film ensures precise humidification while preventing condensation in the preservation zone. The second preservation zone achieves rapid cooling through a sealed cavity, independent air vents, and internal circulation airflow. Precise temperature control is achieved through a suitable phase change temperature and a suitable weight of refrigerant. By setting adjacent temperature zones, the drawbacks of prioritizing cooling a specific preservation zone are addressed. Furthermore, the temperature difference between the first and second preservation zones is small, meaning there is no need to sacrifice the function of other compartments by adopting a priority cooling rule, thus ensuring the stability of the compartment temperature. Attached Figure Description

[0038] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the implementation of the invention and, together with the description, serve to explain the principles of the embodiments of the invention. It is obvious that the drawings described below are merely some embodiments of the invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0039] Figure 1 This is a schematic diagram of the structure of the first and second preservation zones of the refrigerator compartment in an embodiment of this application;

[0040] Figure 2 This is a schematic diagram of the air duct structure of a refrigerator for food preservation, as shown in an embodiment of this application.

[0041] Explanation of icon numbers:

[0042] 1-First preservation zone; 2-Second preservation zone; 3-Humidity regulating film; 4-Cold storage agent;

[0043] 111-First air outlet; 112-First damper; 113-First temperature sensor; 211-Second air outlet; 212-Second damper; 213-Second temperature sensor. Detailed Implementation

[0044] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many 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 invention will be more comprehensive and complete, and will fully convey the concept of the exemplary 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, numerous specific details are provided to give a full understanding of how embodiments of the invention are carried out.

[0045] The refrigerator's food preservation zone is a crucial functional area developed by the refrigerator industry to meet consumers' needs for food preservation. Currently, the main technical solutions for achieving constant temperature and humidity in the preservation zone include sealed cavities, microporous gas exchange, and enveloping air circulation sealed zones. However, these technical solutions all have some limitations.

[0046] While sealed cavity designs effectively reduce heat and humidity exchange, achieving stable temperature and humidity, they are prone to condensation within the designated areas, affecting food preservation. Microporous gas exchange designs, while reducing condensation, result in slower cooling and less precise temperature control. Enveloping airflow sealed zone designs require prioritizing cooling, often sacrificing the temperature of other functional zones to achieve preservation, thus impacting the overall functionality of the refrigerator.

[0047] To address these issues, this application proposes a novel food preservation refrigerator solution. This solution resolves the contradictions between temperature and humidity fluctuations and condensation, as well as the inaccurate temperature control problems in existing technologies, by setting up a first and a second preservation zone at the bottom of the refrigerator compartment, each equipped with an independent temperature control system. Simultaneously, this solution avoids the impact of prioritizing cooling on other functional zones, optimizing the overall functionality of the refrigerator and providing consumers with a more precise and efficient food preservation solution.

[0048] Specifically, this application provides a food preservation refrigerator, referring to... Figure 1 As shown, it includes: a cold storage compartment; the bottom of the cold storage compartment is provided with a first preservation zone 1 and a second preservation zone 2.

[0049] The first preservation zone 1 includes a first drawer and a first drawer cover, with the first drawer cover covering the first drawer.

[0050] The first drawer is typically located in a specific area at the bottom of the refrigerator compartment and is used to store foods that require precise temperature and humidity control. The drawer design facilitates easy access to food while maintaining the airtightness of the compartment. A first drawer cover further enhances the seal, reducing the impact of external environmental factors on the internal temperature and humidity.

[0051] The first preservation zone 1 is also equipped with a first temperature control system, which is configured to control the internal temperature of the first preservation zone 1. The first temperature control system 11 is independently configured inside the first preservation zone 1, achieving precise food preservation by accurately controlling the internal temperature. This system can automatically adjust the temperature according to preset preservation parameters to ensure stable temperature and humidity within the zone.

[0052] The second refrigeration compartment 2 includes a second drawer and a second drawer cover. The second drawer cover covers the second drawer. Similar to the first refrigeration compartment 1, the second drawer is located in another specific area at the bottom of the refrigerator compartment and is used to store different types of food. The design of the second drawer also emphasizes practicality and airtightness. The second drawer cover enhances the sealing of the compartment, helping to maintain stable temperature and humidity inside.

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

[0054] The second temperature control system is independently configured inside the second preservation zone 2. By precisely controlling the temperature within the zone, it meets the preservation needs of different types of food. Similar to the first temperature control system, this system also has an automatic temperature adjustment function.

[0055] It is understood that the food preservation refrigerator solution of this application embodiment can be widely used in homes, supermarkets, restaurants, and other places in practical applications. Users can choose the appropriate preservation zone for storage according to the type of food and preservation needs. For example, for fruits and vegetables that require strict temperature and humidity control, the first preservation zone 1 can be selected for storage; while for meat, fish, and other foods, the second preservation zone 2 can be selected for storage. In this way, users can easily achieve precise food preservation and meet the diverse needs of daily life.

[0056] The refrigerator in this embodiment improves food preservation and extends shelf life by precisely controlling the temperature and humidity within designated zones. It avoids the impact of priority cooling rules on other functional zones, allowing the refrigerator to simultaneously meet the preservation needs of different types of food, thus enhancing its overall functionality. Furthermore, users can select different preservation zones based on food type, making operation simple and providing significant preservation results, thereby improving the user experience.

[0057] In some embodiments of this application, reference is made to Figure 1 and Figure 2 As shown, the first temperature control system includes: a first air outlet 111, a first damper 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.

[0058] The lower edge of the first air outlet 111 is located above the first drawer cover and near the rear wall of the first fresh-keeping zone 1. The first air damper 112 is rotatably connected to the first air outlet 111. The first temperature sensor 113 is located 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 zone 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 damper 112 according to the first comparison result.

[0059] The first air outlet 111 is used to deliver cold air into the first preservation zone 1 to regulate the temperature. The design of the first air outlet 111 ensures uniform distribution of cold air. The first damper 112 controls the opening and closing of the first air outlet 111. The opening and closing state of the first damper 112 determines the flow of cold air, thereby achieving precise temperature regulation within the first preservation zone 1. The first temperature sensor 113 can acquire temperature data within the first preservation zone 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 with a preset first temperature threshold, and then controls the opening and closing of the first air outlet 111 based on the comparison result to achieve precise temperature control.

[0060] The second temperature control system includes: a second air outlet 211, a second damper 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.

[0061] The lower edge of the second air outlet 211 is located above the second drawer cover on one side near the rear wall of the second fresh-keeping zone 2. The second air damper 212 is rotatably connected to the second air outlet 211. The second temperature sensor 213 is located 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 zone 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 damper 212 according to the second comparison result.

[0062] The second temperature control system has a similar structure to the first temperature control system, but it is used to control the temperature of the second preservation zone 2. The second air outlet 211 delivers cold air into the second preservation zone 2 to regulate the temperature. The design of the second air outlet 211 ensures uniform distribution of cold air. The second damper 212 controls the opening and closing of the second air outlet 211. The opening and closing state of the second damper 212 determines the flow of cold air, thereby achieving precise temperature regulation within the second preservation zone 2. The second temperature sensor 213 can acquire temperature data from the second preservation zone 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 with a preset second temperature threshold, and then controls the opening and closing of the second air outlet 211 based on the comparison result to achieve precise temperature control.

[0063] In practical applications, this food preservation refrigerator solution can be flexibly configured according to the specific needs of users. For example, fruits and vegetables that require low-temperature preservation can be stored in the first preservation zone 1, with precise temperature control via the first temperature control system; while meats, fish, and other foods that require higher temperatures can be stored in the second preservation zone 2, with temperature control via the second temperature control system. In this way, users can choose the appropriate zone for storage based on the type of food and preservation requirements, achieving precise food preservation. Furthermore, this solution is suitable for various locations such as homes, supermarkets, and restaurants, meeting the needs of different users.

[0064] This application's embodiment 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 monitoring the temperature within the designated storage area in real time and comparing and controlling it according to preset temperature thresholds, precise temperature regulation is achieved. Specifically, by monitoring and precisely controlling the temperature within the designated storage area in real time, the accuracy of temperature control is improved, ensuring the food's preservation effect. Independent temperature control systems avoid temperature interference between different storage areas, enhancing system stability. Users can select the appropriate storage area based on the type of food and achieve long-term food preservation through precise temperature control, improving the user experience. This control method not only improves temperature stability but also avoids the impact of temperature fluctuations on food preservation.

[0065] In some embodiments of this 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, 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: control the first damper 112 to open when the first temperature data is greater than or equal to the first start-up temperature threshold, and control the first damper 112 to close when the first temperature data is less than or equal to the first shutdown temperature threshold. The second controller is further configured to: control the second damper 212 to open when the second temperature data is greater than or equal to the second start-up temperature threshold, and control the second damper 212 to close when the second temperature data is less than or equal to the second shutdown temperature threshold.

[0067] This solution achieves precise temperature control of two different preservation zones by setting two different temperature thresholds (a first temperature threshold and a second temperature threshold) and corresponding two damper controllers (a first controller and a second controller). When the temperature data reaches or exceeds the start-up temperature threshold, the corresponding first damper 112 or second damper 212 opens, allowing cold air to enter and lower the temperature; when the temperature data drops to or falls below the shutdown temperature threshold, the first damper 112 or second damper 212 closes to maintain temperature stability. This method achieves precise temperature control of the two preservation zones, avoiding the impact of temperature fluctuations on food preservation.

[0068] Specifically, in a fresh-keeping refrigerator, perishable foods can be stored in the first fresh-keeping zone (temperature controlled at 0-3℃), while meats and seafood requiring lower temperatures can be stored in the second fresh-keeping zone (-4℃-0℃). Precise temperature control ensures that all types of food are stored at optimal temperatures, extending their shelf life. Furthermore, this embodiment is also applicable to supermarkets, restaurants, and other commercial establishments, meeting their diverse needs for food preservation and storage.

[0069] This embodiment achieves precise temperature control of two preservation zones by setting specific temperature thresholds and control strategies, thereby improving food preservation. Real-time control of the damper's opening and closing status based on temperature data avoids unnecessary energy consumption and improves system energy efficiency. Appropriate preservation zones can be selected based on food type, and long-term food preservation is achieved through precise temperature control, enhancing the user experience. Furthermore, users can flexibly adjust temperature thresholds and control strategies according to different food types and preservation needs, demonstrating strong adaptability.

[0070] In some embodiments of this application, the first air damper 112 and the second air damper 212 are both double air damper structures; the first air damper 112 is located between the first fresh-keeping zone 1 and the refrigerator compartment, and is close to the left side of the refrigerator compartment; the second air damper 212 is located between the second fresh-keeping zone 2 and the refrigerator compartment, and is close to the right side of the refrigerator compartment.

[0071] The first air damper 112 and the second air damper 212 are positioned between the two preservation zones and the refrigerator compartment. The first air damper 112 is located closer to the left side of the refrigerator compartment, and the second air damper 212 is located closer to the right side of the refrigerator compartment. The dual-damper structure means that the first air damper 112 and the second air damper 212 have dual opening and closing mechanisms, allowing for more precise control of the cold air flow. This minimizes the impact on the temperature inside the refrigerator compartment while maintaining stable temperatures in the two preservation zones.

[0072] In some embodiments of this application, the air supply direction of the first air outlet 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 evenly blow cold air to the periphery 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 fresh-keeping effect.

[0073] The air supply direction of the second air outlet 211 is perpendicular to the bottom of the inner cavity of the second preservation zone 2, forming a second air duct that runs through the interior of the second preservation zone 2. The second air duct can directly blow cold air into the interior of the second preservation zone 2, and through vertical air supply, quickly reduce the temperature inside the second preservation zone 2 and promote internal air convection, thereby improving preservation efficiency.

[0074] This embodiment optimizes the air supply structure and duct design, resulting in a more uniform temperature distribution within the preservation zone and extending the shelf life of food. Users can choose to place food in either the first preservation zone 1 or the second preservation zone 2 according to the different food preservation needs, enjoying a more personalized preservation experience.

[0075] In some embodiments of this application, a humidity-regulating film 3 is embedded in the middle of the first drawer cover of the first preservation area 1, and a first sealed cavity is formed between the first drawer cover and the first drawer drawer, with the humidity-regulating film 3 covering the top of the first sealed cavity.

[0076] The humidity-regulating film 3 is a special type of film that can automatically adjust its internal humidity level according to changes in the ambient humidity. When the humidity in the first preservation zone 1 is too high, the humidity-regulating 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 this application, the relationship between the area of ​​the humidity-regulating film 3 and the volume of the first preservation zone 1 is as follows:

[0078] S=150+25V1cm 2 ;

[0079] Where S is the area of ​​the humidity-regulating film 3, and V1 is the volume of the first preservation zone 1 (cm³). 2 The area unit is 3 for the humidity regulating film.

[0080] Based on the above formula, regardless of the volume of the first preservation zone 1, the humidity regulating film 3 can provide appropriate humidity regulation capabilities to meet different preservation needs. By calculating the correspondence between the humidity regulating film 3 and the volume of the first preservation zone 1, the condensation problem in traditional preservation devices is effectively solved.

[0081] In some embodiments of this application, a cold storage agent 4 is installed in the middle of the inner wall of the second drawer cover of the second preservation zone 2, and a second sealed cavity is formed between the second drawer cover and the second drawer, with the cold storage agent 4 fixed in the middle of the second sealed cavity.

[0082] In some embodiments of this application, the phase change temperature of the cold storage agent 4 is -1°C to -5°C, and the relationship between the weight of the cold storage agent 4 and the volume of the second preservation zone 2 is as follows:

[0083] m=30V2g;

[0084] Where m is the weight of the cold storage agent 4, V2 is the volume of the second preservation zone 2, and g is the weight unit of the cold storage agent 4.

[0085] The weight-volume relationship of the cold storage agent 4 ensures that it can efficiently store and release cold energy to meet the refrigeration needs of the second preservation zone 2. In this way, regardless of the size of the second preservation zone 2, the cold storage agent 4 can provide appropriate refrigeration capacity, thereby ensuring the freshness of food.

[0086] As described above, this application provides a refrigerator for food preservation. A first preservation zone is equipped with a first drawer cover, on which a humidity-regulating film is embedded, forming a sealed cavity with the first drawer drawer for humidity control. A second preservation zone has a second drawer cover, with a refrigerant installed on its inner wall, also forming a sealed cavity with the second drawer drawer for refrigeration. By setting adjacent temperature zones, the drawbacks of prioritizing cooling a particular preservation zone are solved. Furthermore, the temperature difference between the first and second preservation zones is small, meaning there is no need to sacrifice the function of other compartments by prioritizing cooling, ensuring the stability of the compartment temperature. Users can classify and place food in the first or second preservation zone according to the type of food and preservation needs. The humidity-regulating film automatically adjusts the humidity in the first preservation zone without manual intervention. The refrigerant in the second preservation zone automatically stores and releases cold energy according to temperature fluctuations, maintaining a stable refrigeration environment. This solves the condensation problem. A first air outlet forms an air duct surrounding the first preservation zone, while a second air outlet vertically delivers air into the second preservation zone. Two air ducts ensure air circulation and uniform temperature distribution within the two preservation zones.

[0087] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

Claims

1. A fresh-keeping refrigerator, characterized in that, The application relates to a refrigerator, which comprises: a refrigerating chamber; a first fresh-keeping special area (1) and a second fresh-keeping special area (2) are arranged at the bottom of the refrigerating chamber; the first fresh-keeping special area (1) comprises a first drawer and a first drawer cover plate, the first drawer cover plate covers the first drawer, and the first fresh-keeping special area (1) is further provided with a first temperature control system which is configured to control the internal temperature of the first fresh-keeping special area (1); the second fresh-keeping special area (2) comprises a second drawer and a second drawer cover plate, the second drawer cover plate covers the second drawer, and the second fresh-keeping special area (2) is further provided with a second temperature control system which is configured to control the internal temperature of the second fresh-keeping special area (2); a humidity regulating film (3) is inlaid in the middle of the first drawer cover plate of the first fresh-keeping special area (1), a first sealed cavity is formed between the first drawer cover plate and the first drawer, and the humidity regulating film (3) covers the top of the first sealed cavity; a cold accumulator (4) is arranged at the middle position of the inner wall of the second drawer cover plate of the second fresh-keeping special area (2), a second sealed cavity is formed between the second drawer cover plate and the second drawer, and the cold accumulator (4) is fixed in the middle of the second sealed cavity.

2. The fresh-keeping refrigerator according to claim 1, characterized in that, the first temperature control system comprises a first air outlet (111), a first air door (112), a first temperature sensor (113) and a first controller; the first controller is electrically connected with the first air door (112) and the first temperature sensor (113); the lower edge of the first air outlet (111) is arranged above the first drawer cover plate and close to one side of the rear wall of the first fresh-keeping special area (1), the first air door (112) is rotationally connected with the first air outlet (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 special 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 value, obtain a first comparison result, and control the opening and closing of the first air door (112) according to the first comparison result; the second temperature control system comprises a second air outlet (211), a second air door (212), a second temperature sensor (213) and a second controller; the second controller is electrically connected with the second air door (212) and the second temperature sensor (213); the lower edge of the second air outlet (211) is arranged above the second drawer cover plate and close to one side of the rear wall of the second fresh-keeping special area (2), the second air door (212) is rotationally connected with the second air outlet (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 special 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 to obtain a second comparison result, and control opening and closing of the second damper (212) according to the second comparison result.

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

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

5. The 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 damper (112) is arranged between the first fresh-keeping zone (1) and the refrigeration chamber and close to the left side of the refrigeration chamber. The second damper (212) is arranged between the second fresh-keeping zone (2) and the refrigeration chamber and close to the right side of the refrigeration chamber.

6. The 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 plate, and the first air duct surrounds the outside of the first fresh-keeping zone (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 penetrates the inside of the second fresh-keeping zone (2).

7. The fresh-keeping refrigerator according to claim 1, characterized in that, The relationship between the area of the humidity regulating 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 control film (3), V1 is the volume of the first fresh-keeping area (1), cm 2 is the area unit of the humidity control film (3).

8. The fresh-keeping refrigerator according to claim 1, characterized in that, The phase change temperature of the cold storage agent (4) is -1℃ to -5℃, and the relationship between the weight of the cold storage agent (4) and the volume of the second fresh-keeping zone (2) is: m=30V2g; Wherein, m is the weight of the cold storage agent (4), V2 is the volume of the second fresh-keeping zone (2), and g is the weight unit of the cold storage agent (4).

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