Fresh-keeping drawer and refrigerator
By installing multiple sterilization and deodorization devices inside the refrigerator's crisper drawer, combined with a dynamic purification mode and air supply system, the problem of poor purification effect in the existing refrigerator's crisper compartment has been solved, achieving effective sterilization of uneven surfaces and extending the shelf life.
Patent Information
- Application Number
- CN202423215669.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2034-12-25
AI Technical Summary
The purification methods used in existing refrigerators for the fresh food compartment are not very effective, especially on uneven food surfaces and when photosensitizers are used. They are not very effective in inhibiting microbial growth and extending the shelf life.
Design a food storage drawer with multiple built-in sterilization and deodorization devices, including pulsed light devices, light irradiation devices, and photosensitive bactericide release devices. By detecting the total amount and position of items in the drawer, the purification mode is dynamically adjusted, and combined with the air supply system, targeted sterilization and deodorization are achieved.
It effectively inhibits the deterioration of the environment inside the fresh-keeping drawer and the mold and rot of food, extends the shelf life, and improves the preservation effect, especially achieving significant improvement in the problems of uneven surfaces and insufficient use of photosensitizers.
Smart Images
Figure CN223840757U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of refrigerator technology, and more specifically, to a food preservation drawer and a refrigerator. Background Technology
[0002] Fresh food is essential to people's daily lives, but it is characterized by high water content, strong seasonality in harvesting, high temperatures during the harvest season, and the fact that most varieties are easily perishable and difficult to preserve. Short shelf life easily leads to product loss, especially for fruits and vegetables. If mechanically damaged, the released nutrients and the low-acidity environment on the surface of most fruits and vegetables can become a "natural culture medium" for microbial growth, providing conditions for pathogenic bacteria to infect them and posing a risk to consumers.
[0003] Current technology discloses a method to determine the number of irradiations by the pulsed light output device based on the stored goods, thereby applying appropriate pulsed light irradiation to the stored goods to remove pesticide residues from the surface while protecting them. However, this method has limited irradiation power for food with uneven surfaces and cannot completely remove pesticide residues.
[0004] Current technology also discloses a method of placing a translucent film between a drawer and a visible light component, and evenly sprinkling a photosensitizer of the same color as the preset fruits and vegetables onto the translucent film. Visible light irradiation catalyzes the photosensitizer for sterilization and preservation of the fruits and vegetables. However, this patent uses a movable storage box to release the photosensitizer, distributing it across the translucent film. Visible light can only irradiate the surface of the photosensitizer on the upper layer of the translucent film, potentially leading to insufficient use of the photosensitizer.
[0005] In the process of implementing the relevant disclosed embodiments, the following problems were found in the relevant technology:
[0006] ①Refrigerators with pulsed light preservation function: Pulsed light can effectively kill harmful microorganisms that contaminate during storage. It has a good sterilization effect on flat surfaces and transparent liquids. However, due to the influence of light-blocking effect, the sterilization effect of pulsed light is reduced on uneven food surfaces.
[0007] ② In refrigerators that use photosensitizers for preservation, most technologies release photosensitizers by spraying, sprinkling, or coating, and then irradiate them to preserve them. However, these measures have problems such as insufficient photosensitizer effect, high loss, and inconvenience in use.
[0008] There is currently no effective solution to the problem that existing purification methods for fresh food storage rooms have poor purification effects. Utility Model Content
[0009] This utility model provides a food preservation drawer and refrigerator to at least solve the problem of poor purification effect of existing purification methods in the food preservation compartment in the prior art.
[0010] To address the aforementioned technical problems, according to one aspect of this utility model, a food preservation drawer is provided, comprising: a drawer body; a purification device located within the drawer body for sterilizing and deodorizing the internal environment of the drawer body; wherein the purification device includes multiple types of sterilization and deodorization devices, with at least one of each type; a detection device located within the drawer body for detecting the total amount of preserved items within the drawer body; and a controller connected at one end to the detection device and at the other end to the purification device for determining the purification mode of the purification device based on the total amount of preserved items, thereby purifying the internal environment of the drawer body.
[0011] Furthermore, the sterilization and deodorization device includes at least one pulsed light device located inside the drawer body, used to generate pulsed intense light to sterilize the environment inside the drawer body.
[0012] Furthermore, the sterilization and deodorization device further includes at least: a preservation interlayer, which is connected to the internal environment of the preservation body through a sterilization damper; and a release device located within the preservation interlayer, which contains a photosensitive bactericide for releasing the photosensitive bactericide into the preservation interlayer to sterilize the internal environment of the preservation body.
[0013] Furthermore, the sterilization and deodorization device further includes at least: a light irradiation device located within the preservation layer, used to irradiate the photosensitive bactericide to produce a bactericidal substance.
[0014] Furthermore, the sterilization and deodorization device further includes at least: an air supply damper located on the preservation layer for introducing fresh air into the release device; and a fan located inside the preservation layer and at the air supply damper for blowing air into the release device to diffuse the photosensitive bactericide.
[0015] Furthermore, the drawer body comprises at least two, the preservation layer is located between the two drawer bodies, and each drawer body is provided with the sterilization air door, which communicates with the preservation layer.
[0016] Furthermore, the detection device includes: position sensors, including at least two, respectively located in the two drawer bodies, for detecting the position of the preserved items in the two drawer bodies; the controller is used to determine the total quantity of the preserved items based on the position of the preserved items.
[0017] Furthermore, the controller is also configured to determine the purification mode of the purification device based on the position of the preserved items inside the two drawer bodies; wherein, when only one drawer body contains preserved items and the total amount of preserved items is less than a preset minimum quantity, the purification mode of the purification device is determined to be an energy-saving sterilization mode; when only one drawer body contains preserved items and the total amount of preserved items is greater than a preset maximum quantity, or when both drawer bodies contain preserved items and the total amount of preserved items in each drawer body is less than the preset minimum quantity, the purification mode of the purification device is determined to be a normal sterilization mode; when both drawer bodies contain preserved items and the total amount of preserved items in each drawer body is less than the preset minimum quantity, the purification mode of the purification device is determined to be a normal sterilization mode; When the contents of the refrigerated items are present in one drawer and the total amount of refrigerated items in that drawer is less than the preset minimum quantity, while the total amount of refrigerated items in the other drawer is greater than the preset maximum quantity, the purification mode of the purification device is determined to be a strong sterilization mode. When the contents of the refrigerated items are present in both drawers and the total amount of refrigerated items in both drawers is greater than the preset maximum quantity, the purification mode of the purification device is determined to be an extremely strong sterilization mode. The flash frequency of the pulse light device and the illumination time of the light irradiation device increase sequentially in the order of energy-saving sterilization mode, normal sterilization mode, strong sterilization mode, and extremely strong sterilization mode.
[0018] Furthermore, the drawer body further includes at least: a food shelf located inside the drawer body for placing the preserved items; wherein, the food shelf is provided with ventilation holes evenly distributed on it.
[0019] According to another aspect of the present invention, a refrigerator is provided, including the above-described food preservation drawer.
[0020] This invention provides a food storage drawer, including a drawer body and a purification device for purifying the internal environment of the drawer body. The purification device includes multiple types of sterilization and deodorization devices. Different purification modes are activated depending on the total amount of food stored inside the drawer to purify the internal environment. Through the purification device of this invention, multiple modes of sterilization and deodorization effects are achieved. The purification mode is adjusted in a timely manner according to changes in the total amount of food stored in the drawer, providing targeted sterilization and deodorization, effectively inhibiting the deterioration of the internal environment of the food storage drawer and preventing food from molding and rotting, extending the shelf life of food, and improving the preservation effect of the food storage drawer and the refrigerator. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of an optional structure of a food storage drawer according to an embodiment of the present utility model;
[0022] Figure 2 This is an optional cross-sectional view of the food preservation drawer according to an embodiment of the present utility model;
[0023] Figure 3 This is an enlarged detail diagram of an optional food storage drawer according to an embodiment of the present utility model;
[0024] Figure 4 This is an enlarged detail view of another optional food storage drawer according to an embodiment of the present utility model;
[0025] Figure 5 This is another optional enlarged detail diagram of the food storage drawer according to an embodiment of the present utility model.
[0026] Explanation of reference numerals in the attached figures:
[0027] 1-1. Pulsed light device; 1-2. First drawer body; 1-3. Sterilization damper; 1-4. Air supply damper; 1-5. Food shelf; 1-6. Second drawer body; 2-1. Release device; 2-2. First interval; 2-3. Lighting device; 2-4. Second interval; 2-5. Air supply perforation plate. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0029] The terminology used in the embodiments of this utility model is for the purpose of describing particular embodiments only and is not intended to limit the utility model. The singular forms “a,” “the,” and “the” used in the embodiments of this utility model and the appended claims are also intended to include the plural forms, and “multiple” generally includes at least two unless the context clearly indicates otherwise.
[0030] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.
[0031] It should be understood that although the terms first, second, third, etc., may be used to describe controllers in the embodiments of this utility model, these controllers should not be limited to these terms. These terms are only used to distinguish controllers connected to different devices. For example, without departing from the scope of the embodiments of this utility model, a first controller may also be referred to as a second controller, and similarly, a second controller may also be referred to as a first controller.
[0032] Depending on the context, the words “if” or “suppose” as used here can be interpreted as “when” or “in response to determination” or “in response to detection.” Similarly, depending on the context, the phrases “if determination” or “if detection (of the stated condition or event)” can be interpreted as “when determination” or “in response to determination” or “when detection (of the stated condition or event)” or “in response to detection (of the stated condition or event).”
[0033] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or device. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or device that includes said element.
[0034] The optional embodiments of this utility model are described in detail below with reference to the accompanying drawings.
[0035] Example 1
[0036] In a preferred embodiment of this invention, a food preservation drawer is provided, which can be applied to various types of refrigerators to achieve food preservation. Specifically, Figure 1 This diagram illustrates one possible structural design of the food storage drawer, such as... Figure 1 As shown, the food storage drawer includes:
[0037] Drawer body; Figure 1 The medium-sized fresh-keeping drawer has two drawer bodies, namely drawer body 1-2 and drawer body 1-6. The number of drawer bodies can be set according to needs to meet different fresh-keeping requirements.
[0038] A purification device, located in the drawer body, is used to sterilize and deodorize the internal environment of the drawer body; wherein, the purification device includes multiple types of sterilization and deodorization devices, and the number of each type of sterilization and deodorization device is at least one;
[0039] A detection device, located inside the drawer, is used to detect the total amount of fresh items inside the drawer.
[0040] The controller, with one end connected to the detection device and the other end connected to the purification device, is used to determine the purification mode of the purification device based on the total amount of the items to be preserved, so as to purify the internal environment of the drawer.
[0041] In the above embodiments, a food storage drawer is provided, including a drawer body and a purification device for purifying the internal environment of the drawer body. The purification device includes multiple types of sterilization and deodorization devices. Different purification modes are activated depending on the total amount of food stored inside the drawer body to purify the internal environment. Through the purification device of this invention, multiple modes of sterilization and deodorization effects are achieved. The purification mode is adjusted in a timely manner according to changes in the total amount of food stored in the drawer, providing targeted sterilization and deodorization, effectively inhibiting the deterioration of the internal environment of the food storage drawer and preventing food from molding and rotting, extending the shelf life of food, and improving the preservation effect of the food storage drawer and the refrigerator.
[0042] In a preferred embodiment of this invention, the sterilization and deodorization device includes at least one pulsed light device 1-1, located inside the drawer body, used to generate pulsed intense light to sterilize the environment inside the drawer body. It primarily uses pulsed intense light for sterilization. This pulsed intense light emits light from the ultraviolet to near-infrared regions, especially rich in the UV-C band, but its intensity is far stronger than ultraviolet treatment. It can store electrical energy in a capacitor within a fraction of a second and rapidly release the electrical energy within a hundredth or a thousandth of a second, killing microorganisms in a short time using photochemical / photothermal effects.
[0043] In another optional embodiment of this utility model, the sterilization and deodorization device further includes at least: a preservation interlayer, which is connected to the internal environment of the preservation body through a sterilization damper; and a release device located within the preservation interlayer, which contains a photosensitive bactericide for releasing the photosensitive bactericide into the preservation interlayer to sterilize the internal environment of the preservation body. The release device contains a photosensitizer substance, which may be curcumin nanoparticles. Curcumin nanoparticles have better stability and a longer shelf life compared to curcumin solutions or powders. Under light source excitation, the photosensitizer substance generates superoxide anion radicals, hydroxyl radicals, and hydrogen peroxide through electron or energy transfer, disrupting the homeostasis of the internal environment, attacking unsaturated residue sites, oxidizing and damaging biomolecules such as fats, proteins, and nucleic acids, and inducing microbial death.
[0044] Preferably, the sterilization and deodorization device further includes at least: a light irradiation device 2-3, located within the preservation layer, for irradiating the photosensitive bactericide to produce a bactericidal substance. The sterilization and deodorization device also includes at least: an air supply damper 1-4, located on the preservation layer, for introducing fresh air into the release device; and a fan, located within the preservation layer and at the air supply damper, for blowing air into the release device to diffuse the photosensitive bactericide. Figure 1 As shown, the drawer body includes at least two, with a preservation layer located between the two drawer bodies. Each drawer body is equipped with a sterilization damper, which is connected to the preservation layer.
[0045] like Figure 1 As shown, the food preservation drawer mainly includes a pulse light device 1-1, a drawer body 1-2, a sterilization damper 1-3, an air supply damper 1-4, and a drawer body 1-6. Preferably, the drawer body also includes at least one food shelf 1-5, located inside the drawer body, for placing preserved items; wherein, the food shelf is evenly provided with ventilation holes. In this embodiment, there are two food shelves 1-5, respectively installed on the drawer body 1-2 and the drawer body 1-6, with evenly distributed small holes on them. Placing food on them allows the sterilization substance to fully contact the food, avoiding any leakage, and the food shelf can be pulled out at will for convenient cleaning by the user.
[0046] Figure 2 The cross-sectional views of the food storage drawer provided in this embodiment of the utility model include sections AA, BB, CC, and DD, showing the structure of the food storage drawer from different sections, such as... Figure 2 As shown, this section mainly consists of a release device 2-1, a first section interval 2-2, a lighting device 2-3, a second section interval 2-4, an axial flow fan A-1, and an air supply plate 2-5.
[0047] In this embodiment, the release device 2-1 is disposed in the interlayer between the drawer body 1-2 and the drawer body 1-6. The release device is loaded with a photosensitizer, which may be curcumin nanoparticles. Curcumin nanoparticles have better stability and longer storage time than curcumin solution or powder. A certain amount of curcumin nanoparticles are released by the release device through C-1 into the interlayer space between drawer body 1-2 and drawer body 1-6. When drawer body 1-2 and drawer body 1-6 need to be sterilized, the air supply damper 1-4 and the sterilization damper 1-3 can be opened. An axial flow fan A-1 (fan) is connected to the air supply damper 1-4. When the axial flow fan is turned on, it supplies air to the interlayer space through the air supply perforated plate 2-5 (air supply damper). The supplied air can blow up the curcumin nanoparticles, making them suspend in the interlayer space. The photosensitizer is fully irradiated by the light irradiation device 2-3. After irradiation, the photosensitizer is excited to generate a bactericidal substance. The bactericidal substance diffuses into the drawer body 1-2 and drawer body 1-6 through the sterilization damper 1-3 for sterilization.
[0048] In this embodiment, the air supply damper and the sterilization damper are respectively installed on interval 1 and interval 2. The food preservation drawer has two drawer bodies, drawer body 1-2 and drawer body 1-6, and the user can selectively put food into the drawer bodies.
[0049] In another optional embodiment of this utility model, the detection device includes: at least two position sensors, each located within one of the two drawers, for detecting the position of the items to be preserved within the two drawers; and a controller for determining the total quantity of the items to be preserved based on their positions. By adjusting the purification method in response to changes in the total quantity of items to be preserved in the drawers, targeted sterilization and deodorization are performed, effectively inhibiting the deterioration of the environment inside the drawers and preventing the food from molding and rotting, thus extending the shelf life of the food and achieving energy savings.
[0050] Figure 3 The enlarged schematic diagram of the food preservation drawer provided in the embodiment of this utility model is shown in detail A, which is a partial enlarged view of the air outlet, where A-1 is an axial fan connecting the air outlets 1-4; Figure 4 This is another enlarged view of the food preservation drawer provided in an embodiment of the present utility model. Detail B is a partial enlarged view of the sensor setting position, wherein B-1, B-2, B-3, and B-4 are position sensors 1, 2, 3, and 4, respectively. Figure 5 This is another enlarged schematic diagram of the food preservation drawer provided in this embodiment of the present utility model. Detail C is a partial enlarged view of the release device, wherein C-1 is the release outlet of the photosensitizer in the release device.
[0051] The food preservation drawer provided by this utility model includes a detection module, a control module, and a sterilization module. The sterilization module includes a pulsed light sterilization device and a light irradiation device. The detection module contains a position sensor, which is used to detect the position of food placed in the drawer body. The activation status of the pulsed light sterilization device and the light irradiation device is confirmed by the measured position of the food. Each module is connected to the control module, and the control module performs corresponding control based on the information fed back by the other modules.
[0052] Specifically, the controller is also used to determine the purification mode of the purification device based on the position of the preserved items inside the two drawers; wherein, when only one drawer contains preserved items and the total amount of preserved items is small, i.e., less than the preset minimum quantity, the purification mode of the purification device is determined to be energy-saving sterilization mode; when only one drawer contains preserved items and the total amount of preserved items is large, i.e., greater than the preset maximum quantity, or when both drawers contain preserved items and the total amount of preserved items in each drawer is less than the preset minimum quantity, the purification mode of the purification device is determined to be normal sterilization mode; When both drawers contain fresh items and the total amount of fresh items in one drawer is less than the preset minimum quantity, while the total amount of fresh items in the other drawer is greater than the preset maximum quantity, the purification mode of the purification device is set to strong sterilization mode. When both drawers contain fresh items and the total amount of fresh items in both drawers is greater than the preset maximum quantity, the purification mode of the purification device is set to extremely strong sterilization mode. The flash frequency of the pulse light device and the illumination time of the light irradiation device increase sequentially in the order of energy-saving sterilization mode, normal sterilization mode, strong sterilization mode, and extremely strong sterilization mode.
[0053] This utility model provides a drawer body, system, and control method. By setting up a pulsed light sterilization device and a light irradiation device, the system sterilizes the microorganisms in the fresh food drawer. The system determines the amount of food placed in the drawer based on the location information of the food placed by the user. The number of irradiations of the pulsed light sterilization device and the working mode of the light irradiation device are controlled according to the different positions of the food placed in the drawer. The combined use of the two sterilization methods can avoid the problem of residual bacteria showing sublethal damage (in this state, bacteria can repair themselves and reproduce again under favorable conditions) or incomplete sterilization of uneven areas of the food.
[0054] Example 2
[0055] In a preferred embodiment 2 of this utility model, a refrigerator is provided, including a preservation drawer as described in the above embodiments, located on the first layer of the refrigerator, for keeping items fresh.
[0056] In the above embodiments, a food storage drawer is provided, including a drawer body and a purification device for purifying the internal environment of the drawer body. The purification device includes multiple types of sterilization and deodorization devices. Different purification modes are activated depending on the total amount of food stored inside the drawer body to purify the internal environment. Through the purification device of this invention, multiple modes of sterilization and deodorization effects are achieved. The purification mode is adjusted in a timely manner according to changes in the total amount of food stored in the drawer, providing targeted sterilization and deodorization, effectively inhibiting the deterioration of the internal environment of the food storage drawer and preventing food from molding and rotting, extending the shelf life of food, and improving the preservation effect of the food storage drawer and the refrigerator.
[0057] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.
[0058] In the above embodiments of this utility model, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.
[0059] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.
[0060] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.
[0061] Furthermore, in the various embodiments of this utility model, the functional units can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.
[0062] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this utility model, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this utility model. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.
[0063] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art that are not covered by the invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.
[0064] It should be understood that this invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.
Claims
1. A food storage drawer, characterized in that, include: Drawer body; A purification device, located in the drawer body, is used to sterilize and deodorize the internal environment of the drawer body; wherein, the purification device includes multiple types of sterilization and deodorization devices, and the number of each type of sterilization and deodorization device is at least one; A detection device, located inside the drawer, is used to detect the total amount of fresh items inside the drawer. The controller, with one end connected to the detection device and the other end connected to the purification device, is used to determine the purification mode of the purification device based on the total amount of the items to be preserved, so as to purify the internal environment of the drawer.
2. The food preservation drawer according to claim 1, characterized in that, The sterilization and deodorization device includes at least: A pulsed light device, located inside the drawer body, is used to generate pulsed intense light to sterilize the environment inside the drawer body.
3. The food preservation drawer according to claim 2, characterized in that, The sterilization and deodorization device also includes at least: A preservation interlayer, wherein the preservation interlayer is connected to the internal environment of the preservation body through a sterilization air damper; A release device is located inside the preservation layer. The release device contains a photosensitive bactericide, which is used to release the photosensitive bactericide into the preservation layer to sterilize the internal environment of the preservation body.
4. The food preservation drawer according to claim 3, characterized in that, The sterilization and deodorization device also includes at least: A light-emitting device, located within the preservation layer, is used to irradiate the photosensitive bactericide to produce a bactericidal substance.
5. The food preservation drawer according to claim 4, characterized in that, The sterilization and deodorization device also includes at least: An air supply damper, located on the preservation layer, is used to introduce fresh air into the release device; A fan, located within the preservation layer and at the air supply damper, is used to blow air onto the release device to diffuse the photosensitive bactericide.
6. The food preservation drawer according to claim 5, characterized in that, The drawer body comprises at least two, and the preservation layer is located between the two drawer bodies. Each drawer body is provided with the sterilization air door, which communicates with the preservation layer.
7. The food preservation drawer according to claim 6, characterized in that, The detection device includes: The position sensor, including at least two, is located in the two drawer bodies respectively, and is used to detect the position of the preserved items in the two drawer bodies; The controller is used to determine the total quantity of the preserved items based on their location.
8. The food preservation drawer according to claim 7, characterized in that, The controller is further configured to determine the purification mode of the purification device based on the position of the preserved items inside the two drawers; wherein, when only one drawer contains preserved items and the total amount of preserved items is less than a preset minimum quantity, the purification mode of the purification device is determined to be an energy-saving sterilization mode; when only one drawer contains preserved items and the total amount of preserved items is greater than a preset maximum quantity, or when both drawers contain preserved items and the total amount of preserved items in each drawer is less than the preset minimum quantity, the purification mode of the purification device is determined to be a normal sterilization mode; when both drawers contain preserved items... When the total amount of the preserved items in one drawer is less than the preset minimum quantity, and the total amount of the preserved items in the other drawer is greater than the preset maximum quantity, the purification mode of the purification device is determined to be a strong sterilization mode; when there are preserved items in both drawers and the total amount of the preserved items in both drawers is greater than the preset maximum quantity, the purification mode of the purification device is determined to be an extremely strong sterilization mode; the flash frequency of the pulse light device and the illumination time of the light device increase sequentially in the order of the energy-saving sterilization mode, the normal sterilization mode, the strong sterilization mode, and the extremely strong sterilization mode.
9. The food preservation drawer according to claim 1, characterized in that, The drawer body also includes at least: A food storage shelf, located within the drawer body, is used to store the preserved items; wherein, ventilation holes are evenly distributed on the food storage shelf.
10. A refrigerator, characterized in that, Includes the food storage drawer as described in any one of claims 1 to 9.