A food storage drawer and its air pressure control method, a refrigerator

Abstract

This invention discloses a food preservation drawer, its gas pressure control method, and a refrigerator. The food preservation drawer includes: a drawer body with inner and outer layers and a hollow interlayer between the two layers; and a vacuum preservation drawer and a modified atmosphere preservation drawer arranged in parallel within the drawer body. It also includes: a first air pump disposed on the side wall of the vacuum preservation drawer for extracting gas from the vacuum preservation drawer to the outside of the drawer body; and a second air pump disposed on the drawer body for extracting gas from the hollow interlayer to the outside of the drawer body. This invention arranges the vacuum preservation drawer and the modified atmosphere preservation drawer in parallel, allowing the vacuum preservation drawer to be opened independently from the outside, thus providing more diverse preservation functions. The drawer body is designed with inner and outer layers and a hollow interlayer between the two layers, using the hollow interlayer as a transition chamber to better isolate and protect the inner chambers of the drawer, helping to achieve a complete vacuum in the vacuum preservation drawer and providing better food preservation.

Description

Technical Field

[0001] This invention relates to the field of refrigerator technology, and more specifically, to a food preservation drawer and its air pressure control method, and a refrigerator. Background Technology

[0002] Current refrigerator designs, in order to diversify their functions, have added vacuum and preservation features to the traditional refrigerator design. Common crisper drawers use an air pump to create a vacuum inside the drawer, while modified atmosphere drawers use a modified atmosphere membrane to remove the gas inside, achieving modified atmosphere preservation. However, currently, there is no refrigerator that can achieve both vacuum preservation and modified atmosphere preservation. Furthermore, traditional crisper drawers do not achieve a complete vacuum, resulting in poor preservation of the food inside.

[0003] There is currently no effective solution to the problem that existing refrigerator technologies cannot effectively combine vacuum preservation and modified atmosphere preservation. Summary of the Invention

[0004] This invention provides a food preservation drawer and its air pressure control method, as well as a refrigerator, to solve the problem that existing refrigerators cannot effectively combine vacuum preservation and modified atmosphere preservation technologies.

[0005] To address the aforementioned technical problems, the present invention provides a food preservation drawer, comprising: a drawer body having inner and outer layers with a hollow interlayer between the two layers; and a vacuum preservation drawer and a modified atmosphere preservation drawer arranged in parallel within the drawer body; further comprising: a first air pump disposed on the side wall of the vacuum preservation drawer for extracting gas from the vacuum preservation drawer to the outside of the drawer body; and a second air pump disposed on the drawer body for extracting gas from the hollow interlayer to the outside of the drawer body.

[0006] Furthermore, the vacuum preservation drawer also includes: a first pressure detection device disposed inside the vacuum preservation drawer for detecting the pressure inside the vacuum preservation drawer to control the operation of the first air pump; and a second pressure detection device disposed in the hollow interlayer of the drawer body for detecting the pressure in the hollow interlayer of the drawer body to control the operation of the second air pump.

[0007] Furthermore, a partition is provided in the middle of the drawer body to separate the respective preservation spaces of the vacuum preservation drawer and the modified atmosphere preservation drawer.

[0008] Furthermore, the front baffle of the vacuum preservation drawer is provided with a magnet, and the contact portion between the drawer body and the front baffle of the vacuum preservation drawer is also provided with a magnet; the front baffle of the modified atmosphere preservation drawer is provided with a magnet, and the contact portion between the drawer body and the front baffle of the modified atmosphere preservation drawer is also provided with a magnet.

[0009] Furthermore, the front baffle of the vacuum preservation drawer has a groove for accommodating a magnet, and the contact portion between the drawer body and the front baffle of the vacuum preservation drawer has a groove for accommodating a magnet; the front baffle of the modified atmosphere preservation drawer has a groove for accommodating a magnet, and the contact portion between the drawer body and the front baffle of the modified atmosphere preservation drawer has a groove for accommodating a magnet.

[0010] Furthermore, the food preservation drawer also includes an adjustable modified atmosphere film assembly, disposed on the top inner layer of the drawer body, for realizing modified atmosphere preservation of the food preservation drawer.

[0011] Furthermore, the adjustable modified atmosphere film assembly includes: a modified atmosphere film and a modified atmosphere film cover, wherein the modified atmosphere film cover is used to adjust the effective modified atmosphere area of ​​the modified atmosphere film, and the modified atmosphere film is used to adjust the oxygen concentration and carbon dioxide concentration of the preservation space of the modified atmosphere preservation drawer relative to the external space.

[0012] Furthermore, a slider guide mechanism is provided on the inner edge of the drawer body to limit the movement of the vacuum preservation drawer and the modified atmosphere preservation drawer when they are pulled out.

[0013] Furthermore, the hollow interlayer of the drawer body is provided with reinforcing ribs.

[0014] Furthermore, a sealing ring is provided at the interface between the first air pump and the vacuum preservation drawer to ensure airtightness; a sealing ring is provided at the interface between the second air pump and the drawer body to ensure airtightness.

[0015] The present invention also provides a refrigerator, wherein the refrigerator includes the above-described food preservation drawer.

[0016] This invention also provides a method for regulating the air pressure of a food storage drawer, applied to the aforementioned food storage drawer, wherein the method includes: monitoring the pressure inside the vacuum food storage drawer when the drawer is in a closed state; controlling the opening and closing of a first air pump according to the pressure inside the vacuum food storage drawer; and / or,

[0017] When both the vacuum preservation drawer and the modified atmosphere preservation drawer are closed, the pressure in the hollow interlayer of the drawer body is monitored; the opening and closing of the second air pump is controlled according to the pressure in the hollow interlayer of the drawer body; wherein, the first air pump is located on the side wall of the vacuum preservation drawer and is used to extract the gas in the vacuum preservation drawer to the outside of the drawer body; the second air pump is located on the drawer body and is used to extract the gas in the hollow interlayer to the outside of the drawer body.

[0018] Furthermore, controlling the opening and closing of the first air pump based on the pressure inside the vacuum preservation drawer includes: if the pressure inside the vacuum preservation drawer is higher than a first preset pressure, then controlling the first air pump to turn on, until the pressure inside the vacuum preservation drawer equals the first preset pressure and then turns off.

[0019] Furthermore, controlling the opening and closing of the second air pump based on the pressure of the hollow interlayer of the drawer body includes: if the pressure of the hollow interlayer of the drawer body is higher than a second preset pressure, then controlling the second air pump to open until the pressure of the hollow interlayer of the drawer body is equal to the second preset pressure and then closing.

[0020] Furthermore, the method also includes: when the vacuum preservation drawer and the modified atmosphere preservation drawer are in the open state, controlling the first air pump and the second air pump to be in the closed state.

[0021] The present invention also provides a computer-readable storage medium having a computer program stored thereon, characterized in that the program, when executed by a processor, implements the method described above.

[0022] By applying the technical solution of this invention, the vacuum preservation drawer and the modified atmosphere preservation drawer are arranged in parallel, allowing the vacuum preservation drawer to be opened independently from the outside, thus making the preservation functions more diverse. Furthermore, the drawer body is designed with two layers, inner and outer, with a hollow interlayer between them. This hollow interlayer serves as a transitional chamber, providing better isolation and protection for the inner cavity of the drawer, helping to achieve a complete vacuum in the vacuum preservation drawer and thus providing better food preservation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a food storage drawer according to an embodiment of the present invention;

[0024] Figure 2 This is a front view of the food storage drawer according to an embodiment of the present invention;

[0025] Figure 3 This is a side view of a food storage drawer according to an embodiment of the present invention;

[0026] Figure 4 This is a flowchart of a method for regulating the air pressure of a food storage drawer according to an embodiment of the present invention;

[0027] Figure 5 This is a flowchart of the vacuuming operation of a food storage drawer according to an embodiment of the present invention. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0029] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” as used in the embodiments of this invention 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] 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).”

[0032] 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.

[0033] The optional embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0034] Example 1

[0035] Figure 1 This is a schematic diagram of the structure of a food storage drawer according to an embodiment of the present invention, as shown below. Figure 1As shown, the refrigerator's crisper drawer includes: a drawer body 1 with inner and outer layers and a hollow interlayer between the two layers; and a vacuum crisper drawer 2 and a modified atmosphere crisper drawer 3 arranged in parallel within the drawer body. Both the vacuum crisper drawer 2 and the modified atmosphere crisper drawer 3 can be opened independently, allowing the user to choose to place food into either the vacuum crisper drawer 2 or the modified atmosphere crisper drawer 3 when using the refrigerator. To ensure independent preservation for both the vacuum crisper drawer 2 and the modified atmosphere crisper drawer 3, this embodiment includes a partition 6 in the middle of the drawer body 1 to separate the respective preservation spaces of the vacuum crisper drawer 2 and the modified atmosphere crisper drawer 3.

[0036] To achieve the vacuum preservation function of the vacuum preservation drawer 2, the drawer also includes a first air pump 4, which is installed on the side wall of the vacuum preservation drawer 2. This first air pump 4 is used to extract the gas inside the vacuum preservation drawer 2 to the outside of the drawer body 1. It can completely extract the gas inside the vacuum preservation drawer 2 and discharge it to the outside of the drawer body 1, creating a vacuum inside the drawer and thus achieving better preservation. The first air pump 4 can be installed on any side wall of the vacuum preservation drawer 2. However, considering the overall size of the drawer, installing the first air pump 4 on the rear side wall of the drawer 2 at the rear end saves space.

[0037] This embodiment of the food preservation drawer is also designed with a drawer body having two layers, inner and outer, with a hollow interlayer between the two layers. The hollow interlayer serves as a transition chamber, presenting a vacuum or semi-vacuum state, which provides better isolation and protection for the inner chamber of the drawer, helping to achieve a complete vacuum in the vacuum food preservation drawer and providing better food preservation. To achieve the vacuuming operation of the hollow interlayer of the drawer body, the above-mentioned food preservation drawer also includes a second air pump 5, installed on the drawer body 1, used to extract the gas from the hollow interlayer to the outside of the drawer body 1. This can extract the gas from the hollow interlayer of the drawer body 1, making the hollow interlayer a vacuum or semi-vacuum state, which can provide better protection for the vacuum food preservation drawer 2 and the modified atmosphere food preservation drawer 3, resulting in better preservation. The specific installation location of the second air pump 5 can be set at the top, bottom, or rear of the drawer body.

[0038] Preferably, a sealing ring is provided at the interface between the first air pump 4 and the vacuum preservation drawer 2 to ensure airtightness. The first air pump 4 and the vacuum preservation drawer 2 are connected by a pipe that passes through the hollow interlayer of the drawer body 1. The aforementioned interface may include the pipe interface of the vacuum preservation drawer 2 or the interface where the first air pump 4 connects to the pipe. A sealing ring is provided at the interface between the second air pump 5 and the drawer body 1 to ensure airtightness.

[0039] Since the opening and closing of the first air pump 4 depends on the pressure inside the vacuum preservation drawer 2, a first pressure detection device is installed inside the vacuum preservation drawer 2 to detect the pressure inside the drawer 2 and control the operation of the first air pump 4. Specifically, it can be installed at any position inside the vacuum preservation drawer 2, such as on the side wall, as long as the pressure inside the vacuum preservation drawer 2 can be accurately detected. Since the opening and closing of the second air pump 5 depends on the pressure of the hollow interlayer of the drawer body 1, a second pressure detection device is installed on the hollow interlayer of the drawer body 1 to detect the pressure of the hollow interlayer of the drawer body 1 and control the operation of the second air pump 5. Specifically, it can be installed at any position in the hollow interlayer, as long as the pressure of the hollow interlayer of the drawer body 1 can be accurately detected.

[0040] To facilitate the user's pulling out of the two drawers, drawer handles 16 (e.g., rectangular handles) are provided on the outer side of the front panel of each drawer. To improve the sealing performance of the vacuum preservation drawer 2 and the modified atmosphere storage drawer 3 when closed, this embodiment provides a magnet 7 on the front panel of the vacuum preservation drawer 2, and a magnet 8 at the contact point between the drawer body and the front panel of the vacuum preservation drawer. When the vacuum preservation drawer 2 is closed, the magnets attract each other to achieve a drawer seal. This embodiment also provides a magnet 9 on the front panel of the modified atmosphere storage drawer, and a magnet 10 at the contact point between the drawer body and the front panel of the modified atmosphere storage drawer. When the modified atmosphere storage drawer 3 is closed, the magnets attract each other to achieve a drawer seal.

[0041] Regarding the installation location of the magnets, they can be directly attached to the front panel of the drawer or the drawer body, or grooves can be provided to hold the magnets, ensuring a smooth surface. Specifically, the front panel of the vacuum preservation drawer 2 has a groove for mounting magnet 7, and the contact area between the drawer body 1 and the front panel of the vacuum preservation drawer 2 has a groove for mounting magnet 8; the front panel of the modified atmosphere preservation drawer 3 has a groove for mounting magnet 9, and the contact area between the drawer body 1 and the front panel of the modified atmosphere preservation drawer 3 has a groove for mounting magnet 10. Based on this, the magnetic attraction principle ensures that the drawers are completely closed, improving the drawer's sealing performance and further ensuring the preservation effect of each drawer.

[0042] In order to achieve the preservation effect of the modified atmosphere preservation drawer 3, the above-mentioned preservation drawer also includes: an adjustable modified atmosphere film assembly 11, which is set on the top of the inner layer of the drawer body 1, for realizing the modified atmosphere preservation of the modified atmosphere preservation drawer 3. Figure 2 This is a front view of the food storage drawer according to an embodiment of the present invention. Figure 3 This is a side view of a food storage drawer according to an embodiment of the present invention, such as... Figure 2 and Figure 3As shown, the adjustable modified atmosphere film assembly includes a modified atmosphere film 12 and a modified atmosphere film cover 13. The modified atmosphere film cover 13 is used to adjust the effective modified atmosphere area of ​​the modified atmosphere film 12, and the modified atmosphere film 12 is used to adjust the oxygen concentration and carbon dioxide concentration of the preservation space of the modified atmosphere preservation drawer 3 relative to the external space. Based on this, the effective modified atmosphere area of ​​the modified atmosphere film can be adjusted according to needs, further controlling the modified atmosphere preservation effect of the modified atmosphere preservation drawer.

[0043] In this embodiment, a slider guide rail mechanism 14 is provided on the inner edge of the drawer body 1 to limit the movement of the vacuum preservation drawer 2 and the modified atmosphere preservation drawer 3 when they are pulled out. The slider guide rail mechanism 14 is integrated with the drawer body 1 as a single structure. Specifically, the slider refers to the rectangular grooves opened on both sides of the vacuum preservation drawer 2 and the modified atmosphere preservation drawer 3, respectively, and the guide rail refers to the rectangular bosses provided on the inner edge of the drawer body 1. The rectangular grooves and rectangular bosses work together to limit and fix the two drawers when they move inside the drawer body.

[0044] To enhance the strength of the drawer, reinforcing ribs 15 are provided in the hollow interlayer of the drawer body 1. The specific location of these ribs is not limited; they can be triangular reinforcing ribs 15 placed at the four bends of the hollow interlayer or at other locations within the vacuum interlayer.

[0045] The food storage drawer described in this embodiment has two layers, inner and outer, with a hollow interlayer 17 in between. The inner layer is a closed small drawer frame, and a partition is added in the middle of the drawer frame to divide it into left and right parts, where a vacuum storage drawer and a modified atmosphere storage drawer are installed respectively. This embodiment improves upon the traditional drawer structure by designing a drawer body with two layers and a hollow interlayer between them. The hollow interlayer serves as a transition chamber, providing better isolation and protection for the inner chambers of the drawer, which helps to achieve a complete vacuum in the vacuum storage drawer and provides better food preservation. By setting the vacuum storage drawer and the modified atmosphere storage drawer in parallel, the vacuum storage drawer can be opened independently from the outside, making the preservation functions more diverse.

[0046] This embodiment also provides a refrigerator, including one or more preservation drawers as described above.

[0047] Example 2

[0048] Figure 4 This is a flowchart of a gas pressure control method for a food storage drawer according to an embodiment of the present invention, as shown below. Figure 4 As shown, the method includes the following steps:

[0049] Step S401: When the vacuum preservation drawer is in the closed state, monitor the pressure inside the vacuum preservation drawer; control the opening and closing of the first air pump according to the pressure inside the vacuum preservation drawer.

[0050] Step S402: When both the vacuum preservation drawer and the modified atmosphere preservation drawer are closed, monitor the pressure of the hollow interlayer of the drawer body; control the opening and closing of the second air pump according to the pressure of the hollow interlayer of the drawer body.

[0051] The first air pump is installed on the side wall of the vacuum preservation drawer to extract the gas inside the drawer to the outside of the drawer body; the second air pump is installed on the drawer body to extract the gas in the hollow interlayer to the outside of the drawer body.

[0052] This embodiment detects the closed state of the two drawers and controls the opening and closing of the first and second air pumps to ensure the vacuum preservation effect of the vacuum preservation drawer and to ensure the vacuum or semi-vacuum state of the hollow interlayer of the drawer body. This provides better isolation and protection for the inner cavity of the drawer, helps to achieve a complete vacuum in the vacuum preservation drawer, and provides better food preservation function.

[0053] It should be noted that the execution order of steps S401 and S402 can be reversed, or they can be executed simultaneously.

[0054] In practical implementation, the opening and closing of the first air pump is controlled according to the pressure inside the vacuum preservation drawer, achieved through the following preferred embodiment: if the pressure inside the vacuum preservation drawer is higher than a first preset pressure, the first air pump is turned on until the pressure inside the vacuum preservation drawer equals the first preset pressure, at which point it is turned off. In practical implementation, the opening and closing of the second air pump is controlled according to the pressure in the hollow interlayer of the drawer body, achieved through the following preferred embodiment: if the pressure in the hollow interlayer of the drawer body is higher than a second preset pressure, the second air pump is turned on until the pressure in the hollow interlayer of the drawer body equals the second preset pressure, at which point it is turned off. Based on this, the vacuum preservation effect after the drawer is closed can be guaranteed.

[0055] It should be noted that when the vacuum preservation drawer and the modified atmosphere preservation drawer are in the open state, the first air pump and the second air pump should be in the closed state to avoid ineffective vacuuming operations and save operating costs.

[0056] Example 3

[0057] This embodiment, in conjunction with the accompanying drawings, introduces the control logic of the vacuuming operation of the food storage drawer. Figure 5 This is a flowchart of the vacuuming operation of a food storage drawer according to an embodiment of the present invention, as follows: Figure 5 As shown, the process includes the following steps:

[0058] Step S501: The refrigerator starts running.

[0059] Step S502: Determine whether the vacuum preservation drawer and the modified atmosphere preservation drawer are closed;

[0060] If the vacuum preservation drawer is closed (regardless of whether the modified atmosphere preservation drawer is closed), proceed to step S503; if both drawers are closed, proceed to step S507.

[0061] Otherwise, proceed to step S511.

[0062] In step S503, when the vacuum preservation drawer is in the closed state, a vacuuming operation can be performed on it. The pressure P1 inside the vacuum preservation drawer is monitored; specifically, the pressure can be detected by a first pressure detection device installed inside the vacuum preservation drawer.

[0063] Step S504: Determine whether P1 has reached the first preset pressure. It should be noted that when the drawer is open, the pressure inside the drawer is the same as the external atmospheric pressure. After the drawer is closed, a vacuum needs to be created to ensure the quality of the stored items. The aforementioned first preset pressure is the pressure range within the vacuum preservation drawer where the preservation effect is optimal; for example, it can be set to a complete vacuum or a semi-vacuum. Therefore, it is necessary to determine whether P1 is higher than the first preset pressure. If P1 is higher, it means that the first air pump needs to be activated to perform a vacuuming operation.

[0064] In step S505, if P1 is higher than the first preset pressure, the first air pump is turned on until P1 is equal to or lower than the first preset pressure, at which point the first air pump is turned off. Afterwards, the process can return to the previous cycle and repeat step S503.

[0065] In step S506, if the pressure P1 inside the vacuum preservation drawer has reached the first preset pressure, the first air pump is shut off. Afterwards, the process can return to the previous cycle and repeat step S503.

[0066] In step S507, when both the vacuum preservation drawer and the modified atmosphere preservation drawer are closed, a vacuuming operation can be performed on the hollow interlayer of the drawer body. The pressure P2 of the hollow interlayer of the drawer body is monitored; specifically, the pressure can be detected using a second pressure detection device installed in the hollow interlayer of the drawer body.

[0067] Step S508: Determine whether P2 has reached the second preset pressure. It should be noted that by adjusting the pressure of the hollow interlayer to create a vacuum or semi-vacuum state, the inner cavity of the drawer can be isolated and protected, achieving a complete or semi-vacuum environment for better preservation. Therefore, it is necessary to determine whether P2 is higher than the second preset pressure. If P2 is higher, it indicates that the second air pump needs to be activated for vacuuming.

[0068] In step S509, if P2 is higher than the second preset pressure, the second air pump is turned on until P2 is equal to or lower than the second preset pressure, at which point the second air pump is turned off. Afterwards, the process can return to the previous cycle and repeat step S507.

[0069] In step S510, if the pressure P2 in the hollow interlayer of the drawer body has reached the second preset pressure, the second air pump is shut off. Afterwards, the process can return to the previous cycle and execute step S507.

[0070] Step S511: If the opening time of any one or both of the vacuum preservation drawers and modified atmosphere preservation drawers exceeds the limit, an alarm will be triggered to prompt the user to close them in time.

[0071] This embodiment detects the closed state of the two drawers and controls the opening and closing of the first and second air pumps to ensure the vacuum preservation effect of the vacuum preservation drawer and to ensure the vacuum or semi-vacuum state of the hollow interlayer of the drawer body. This provides better isolation and protection for the inner cavity of the drawer, helps to achieve a complete vacuum in the vacuum preservation drawer, and provides better food preservation function.

[0072] Example 4

[0073] This invention provides software for executing the technical solutions described in the above embodiments and preferred embodiments.

[0074] This invention provides a non-volatile computer storage medium storing computer-executable instructions that can execute the air pressure control method for the food preservation drawer in any of the above method embodiments.

[0075] The aforementioned storage medium stores the aforementioned software, and the storage medium includes, but is not limited to, optical discs, floppy disks, hard disks, and rewritable memory.

[0076] The above-described product can execute the method provided in the embodiments of the present invention, and has the corresponding functional modules and beneficial effects for executing the method. Technical details not described in detail in this embodiment can be found in the method provided in the embodiments of the present invention.

[0077] The device embodiments described above are merely illustrative. 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 network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0078] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A crisper drawer, characterized by, The fresh-keeping drawer comprises: a drawer body (1) with two layers of inner and outer layers and a hollow interlayer between the two layers, and a vacuum fresh-keeping drawer (2) and a modified atmosphere fresh-keeping drawer (3) arranged in parallel in the drawer body (1); further comprising: a first air pump (4) arranged on a side wall of the vacuum fresh-keeping drawer (2) for pumping out the gas in the vacuum fresh-keeping drawer (2) to the outside of the drawer body (1); a second air pump (5) arranged on the drawer body (1) for pumping out the gas in the hollow interlayer to the outside of the drawer body (1) to make the hollow interlayer into a vacuum or semi-vacuum state; an adjustable modified atmosphere film assembly (11) arranged at the top of the inner layer of the drawer body (1) for realizing the modified atmosphere fresh-keeping of the modified atmosphere fresh-keeping drawer (3).

2. - The crisper drawer according to claim 1, characterized in that, The fresh-keeping drawer further comprises: a first pressure detection device arranged in the vacuum fresh-keeping drawer (2) for detecting the pressure in the vacuum fresh-keeping drawer (2) to control the operation of the first air pump (4); a second pressure detection device arranged in the hollow interlayer of the drawer body (1) for detecting the pressure in the hollow interlayer of the drawer body (1) to control the operation of the second air pump (5).

3. The fresh-keeping drawer according to claim 1, wherein a partition plate (6) is arranged in the middle of the drawer body (1) for separating the fresh-keeping spaces of the vacuum fresh-keeping drawer (2) and the modified atmosphere fresh-keeping drawer (3).

4. The fresh-keeping drawer according to claim 1, wherein a magnet (7) is arranged on the front baffle of the vacuum fresh-keeping drawer (2), and a magnet (8) is also arranged on the contact part of the drawer body (1) and the front baffle of the vacuum fresh-keeping drawer (2); a magnet (9) is arranged on the front baffle of the modified atmosphere fresh-keeping drawer (3), and a magnet (10) is also arranged on the contact part of the drawer body (1) and the front baffle of the modified atmosphere fresh-keeping drawer (3).

5. The fresh-keeping drawer according to claim 4, wherein a recess is formed in the front baffle of the vacuum fresh-keeping drawer (2) to arrange the magnet (7), and a recess is formed in the contact part of the drawer body (1) and the front baffle of the vacuum fresh-keeping drawer (2) to arrange the magnet (8); a recess is formed in the front baffle of the modified atmosphere fresh-keeping drawer (3) to arrange the magnet (9), and a recess is formed in the contact part of the drawer body (1) and the front baffle of the modified atmosphere fresh-keeping drawer (3) to arrange the magnet (10).

6. The crisper drawer of claim 1, wherein, The adjustable modified atmosphere film assembly (11) comprises: a modified atmosphere film (12) and a modified atmosphere film cover (13), the modified atmosphere film cover (13) is used for adjusting the effective modified atmosphere area of the modified atmosphere film (12), and the modified atmosphere film (12) is used for adjusting the oxygen concentration and carbon dioxide concentration of the fresh-keeping space of the modified atmosphere fresh-keeping drawer (3) relative to the outside space.

7. The fresh-keeping drawer according to any one of claims 1 to 6, wherein a sliding block guide rail mechanism (14) is arranged on the inner side edge of the drawer body (1) to limit the sliding movement of the vacuum fresh-keeping drawer (2) and the modified atmosphere fresh-keeping drawer (3).

8. The crisper drawer according to any one of claims 1 to 6, characterized in that, the hollow sandwich of the drawer body (1) is provided with a reinforcing rib (15).

9. The crisper drawer according to any one of claims 1 to 6, characterized in that, the first air pump (4) is provided with a sealing ring at the interface with the vacuum crisper drawer (2) to ensure air tightness; the second air pump (5) is provided with a sealing ring at the interface with the drawer body (1) to ensure air tightness.

10. A refrigerator characterized by comprising: The refrigerator comprises the crisper drawer according to any one of claims 1 to 9.

11. A method of air pressure regulation of a crisper drawer, applied to the crisper drawer according to any one of claims 1 to 9, characterized in that, The method comprises: monitoring the pressure in the vacuum crisper drawer when the vacuum crisper drawer is in a closed state; controlling the opening and closing of the first air pump according to the pressure in the vacuum crisper drawer; and / or, monitoring the pressure in the hollow sandwich of the drawer body when the vacuum crisper drawer and the modified atmosphere crisper drawer are both in a closed state; controlling the opening and closing of the second air pump according to the pressure in the hollow sandwich of the drawer body; wherein the first air pump is arranged on the side wall of the vacuum crisper drawer and is used to pump the gas in the vacuum crisper drawer out of the drawer body; the second air pump is arranged on the drawer body and is used to pump the gas in the hollow sandwich out of the drawer body.

12. The method of claim 11, wherein, Controlling the opening and closing of the first air pump according to the pressure in the vacuum crisper drawer comprises: if the pressure in the vacuum crisper drawer is higher than a first preset pressure, the first air pump is controlled to be turned on until the pressure in the vacuum crisper drawer is equal to the first preset pressure.

13. The method of claim 11, wherein, Controlling the opening and closing of the second air pump according to the pressure in the hollow sandwich of the drawer body comprises: if the pressure in the hollow sandwich of the drawer body is higher than a second preset pressure, the second air pump is controlled to be turned on until the pressure in the hollow sandwich of the drawer body is equal to the second preset pressure.

14. The method according to any one of claims 11 to 13, characterized in that, The method further comprises: controlling the first air pump and the second air pump to be in a closed state when the vacuum crisper drawer and the modified atmosphere crisper drawer are in an open state.

15. A computer readable storage medium having stored thereon a computer program, characterized in that, The program, when executed by a processor, implements the method according to any one of claims 11 to 14.

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