Preservation refrigerator and preservation method

Abstract

The application relates to a fresh-keeping refrigerator and a fresh-keeping method, which comprises the following steps: reducing the temperature in a first drawer through a first air door, reducing the pressure in the first drawer through a gas pump, and storing first articles in the first drawer in a first temperature interval and a first pressure interval; reducing the temperature in a second drawer through a second air door, pressurizing the second drawer to a set pressure interval through a preset gas chamber, depressurizing the second drawer to a second pressure interval through a pressure relief valve, and storing second articles in the second drawer in a second temperature interval and a second pressure interval. The application improves the preservation effect of articles in the refrigerator.

Description

Technical Field

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

[0002] People generally use refrigerators to store different kinds of items, such as food, fruits and vegetables, and medicines. Some items are suitable for low-temperature and low-pressure storage, while others are suitable for low-temperature and high-pressure storage. However, the temperature and pressure inside a refrigerator are currently fixed. This means that if the storage pressure or temperature of an item is not appropriate, it can easily spoil.

[0003] For example, regarding fresh fruits and vegetables versus cut fruits and vegetables, fresh fruits and vegetables will still respire and metabolize under low temperatures, thus aging, drying out, and losing quality; while the cut surfaces of freshly cut fruits and vegetables are easily infected by microorganisms, which will then produce acid and spoil, making them inedible.

[0004] There is currently no good solution to the problem of items stored in refrigerators easily spoiling. Summary of the Invention

[0005] This application provides a refrigerator and a method for preserving food to solve the problem of stored items easily spoiling.

[0006] In a first aspect, this application provides a refrigerator for preserving food, the refrigerator comprising a first drawer, a first air door, a gas pump, a second drawer, a second air door, a preset gas chamber, and a drawer vent valve.

[0007] The first damper is connected to the first drawer through the first air duct, and the first damper is used to reduce the temperature in the first drawer so that the temperature in the first drawer is within a first temperature range.

[0008] The gas pump is connected to the first drawer through a pump inlet pipe and is used to evacuate and depressurize the first drawer so that the pressure in the first drawer is in a first pressure range, wherein the first temperature range and the first pressure range are suitable for the preservation of the first item.

[0009] The second damper is connected to the second drawer through the second air duct. The second damper is used to reduce the temperature in the second drawer so that the temperature in the second drawer is within the second temperature range.

[0010] The preset gas chamber is connected to the second drawer through a first pipe to increase the pressure in the second drawer to a set pressure range. The drawer vent valve is used to reduce the pressure in the second drawer to a second pressure range. The second temperature range and the second pressure range are suitable for storing the second item.

[0011] Optionally, the preset gas chamber is connected to the first drawer via a second pipe, and the preset gas chamber is used to pressurize the first drawer.

[0012] Optionally, it also includes an atmospheric pressure gas chamber, a third damper, a compressor, and a third vent valve, wherein the pressure in the atmospheric pressure gas chamber is lower than the pressure in the preset gas chamber;

[0013] The third damper is connected to the atmospheric pressure gas chamber through the third air duct. The third damper is used to reduce the temperature in the atmospheric pressure gas chamber so that the temperature in the atmospheric pressure gas chamber is in a third temperature range.

[0014] The compressor is connected to the atmospheric pressure gas chamber through the compressor intake pipe and is used to increase the pressure in the atmospheric pressure gas chamber. The third vent valve is used to reduce the pressure in the atmospheric pressure gas chamber. The compressor and the third vent valve are used to maintain the pressure in the atmospheric pressure gas chamber in the third pressure range.

[0015] Optionally, it also includes a fourth damper and a fourth vent valve;

[0016] The fourth damper is connected to the preset gas chamber through the fourth air duct. The fourth damper is used to reduce the temperature in the preset gas chamber, where the temperature is located in the fourth temperature range.

[0017] The compressor is used to draw gas from the atmospheric pressure gas chamber through the compressor inlet pipe, compress and pressurize the gas, and then input it into the preset gas chamber through the compressor outlet pipe; the fourth vent valve is used to reduce the pressure in the preset gas chamber, and the compressor and the fourth vent valve are used to keep the pressure in the preset gas chamber within the fourth pressure range.

[0018] Secondly, this application provides a method for preserving food, the method comprising:

[0019] The temperature in the first drawer is reduced by the first damper, and the pressure in the first drawer is reduced by the gas pump, so that the first item in the first drawer is kept in the first temperature range and the first pressure range.

[0020] The temperature in the second drawer is reduced by the second damper, and the second drawer is pressurized to a set pressure range by the preset gas chamber. Then, the pressure in the second drawer is reduced to a second pressure range by the vent valve, so that the second item in the second drawer is kept in the second temperature range and the second pressure range.

[0021] Optionally, the temperature in the first drawer is reduced by a first damper, and the pressure in the first drawer is reduced by a gas pump, so that the first item in the first drawer is stored in a first temperature range and a first pressure range, including:

[0022] When the temperature in the first drawer is higher than the first temperature range, the first damper is opened to cool the temperature in the first drawer down to the first temperature range.

[0023] When the pressure in the first drawer is greater than the first pressure range, the gas pump is used to evacuate and depressurize the first drawer, so that the pressure in the first drawer is reduced to the first pressure range, so that the first item in the first drawer is preserved in the first temperature range and the first pressure range.

[0024] Optionally, after the first drawer is evacuated and depressurized by the gas pump, the method further includes:

[0025] When the pressure in the first drawer is less than the first pressure range, the valve on the second pipe is opened to allow gas in the preset gas chamber to enter the first drawer through the second pipe and pressurize the first drawer.

[0026] Optionally, the temperature in the second drawer is reduced by a second damper, and the second drawer is pressurized to a set pressure range by a preset gas chamber, and then depressurized to a second pressure range by a vent valve, so that the second item in the second drawer is stored in the second temperature range and the second pressure range, including:

[0027] When the temperature in the second drawer is higher than the second temperature range, the second damper is opened to cool the temperature in the second drawer down to the second temperature range.

[0028] When the pressure in the second drawer is less than the set pressure range, the valve on the first pipe is opened so that the gas in the preset gas chamber that meets the set conditions enters the second drawer through the first pipe to pressurize the second drawer to the set pressure range;

[0029] After the pressure in the second drawer is maintained for a set period of time, the drawer vent valve of the second drawer is opened to reduce the pressure in the second drawer to meet the second pressure range.

[0030] Optionally, before controlling the valve on the first pipeline to open, the method further includes:

[0031] The fourth damper is opened to cool the temperature in the preset gas chamber to the fourth temperature range.

[0032] The compressor is controlled to start, so that the compressor draws gas from the atmospheric pressure gas chamber through the compressor inlet pipe, compresses and pressurizes the gas, and then inputs it into the preset gas chamber through the compressor outlet pipe, so that the pressure in the preset gas chamber is within the fourth pressure range;

[0033] The gas in the preset gas chamber is considered to meet the set conditions if the temperature in the preset gas chamber is within the fourth temperature range and the pressure in the preset gas chamber is within the fourth pressure range.

[0034] Optionally, before the compressor draws gas from the atmospheric pressure gas chamber through the compressor inlet pipe, the method further includes:

[0035] The third damper is opened to cool the temperature in the atmospheric pressure gas chamber to the third temperature range.

[0036] The atmospheric pressure gas chamber is pressurized by a compressor so that the pressure in the atmospheric pressure gas chamber is located in the third pressure range.

[0037] Optionally, after pressurizing the atmospheric pressure gas chamber with a compressor, the method further includes:

[0038] If the pressure in the atmospheric pressure gas chamber is greater than the third pressure range, the pressure in the atmospheric pressure gas chamber is reduced through the third vent valve until the pressure in the atmospheric pressure gas chamber is within the third pressure range.

[0039] Optionally, after the gas is introduced into the preset gas chamber through the compressor outlet pipe, the method further includes:

[0040] If the pressure in the preset gas chamber is greater than the fourth pressure range, the pressure in the preset gas chamber is reduced by the fourth vent valve until the pressure in the preset gas chamber is within the fourth pressure range.

[0041] Thirdly, this application provides a food preservation device, the device comprising:

[0042] A temperature reduction module is used to reduce the temperature in the first drawer through a first damper and to reduce the pressure in the first drawer through a gas pump, so that the first item in the first drawer is kept in a first temperature range and a first pressure range.

[0043] The pressurization module is used to reduce the temperature in the second drawer through the second damper, pressurize the second drawer to a set pressure range through a preset gas chamber, and then depressurize the second drawer to a second pressure range through a vent valve, so that the second item in the second drawer is kept in the second temperature range and the second pressure range.

[0044] Fourthly, this application also provides an electronic device, including a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus; the memory is used to store computer programs; and the processor is used to implement any of the methods described above when executing the program stored in the memory.

[0045] Fifthly, this application also provides a computer storage medium storing computer-executable instructions for performing the preservation method described in any of the preceding claims.

[0046] Compared with the prior art, the technical solution provided in this application has the following advantages: The first drawer is cooled by a first damper, and the first drawer is kept at low pressure by a gas pump, thus ensuring the low-temperature, low-pressure preservation of the first item in the first drawer. The second drawer is cooled by a second damper, and high-pressure gas is introduced into the second drawer through a preset gas chamber, allowing fresh-cut fruits and vegetables to be preserved under high pressure for a period of time. Then, the drawer is depressurized using a drawer vent valve. The pressure after depressurization is still higher than normal pressure, thus ensuring the low-temperature, high-pressure preservation of the second item. This application combines depressurization and high-pressure preservation technologies, resulting in better preservation of different items in the refrigerator. Attached Figure Description

[0047] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0048] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0050] Figure 1 This is a front view of a refrigerator provided in an embodiment of this application;

[0051] Figure 2 A cross-sectional view of the drawer provided in an embodiment of this application;

[0052] Figure 3 A top view of a drawer provided in an embodiment of this application;

[0053] Figure 4A flowchart of a preservation method provided in this application embodiment;

[0054] Figure 5 This is a flowchart illustrating the fresh fruit and vegetable control process provided in an embodiment of this application.

[0055] Figure 6 This is a flowchart illustrating the control process for fresh-cut fruits and vegetables provided in an embodiment of this application.

[0056] Figure 7 This is a schematic diagram of the structure of a food preservation device provided in an embodiment of this application;

[0057] Figure 8 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application.

[0058] 1—First drawer; 101—First temperature sensor; 102—First pressure sensor;

[0059] 2—Second drawer; 201—Second temperature sensor; 202—Second pressure sensor;

[0060] 3—Drawer outer shell; 301—First pressure relief valve; 302—Second pressure relief valve;

[0061] 4—Atmospheric pressure gas chamber; 401—Third temperature sensor; 402—Third pressure sensor; 403—Third pressure relief valve;

[0062] 5—Preset gas chamber; 501—Fourth temperature sensor; 502—Fourth pressure sensor; 503—Fourth pressure relief valve; 504—First pipeline; 505—Second pipeline; 506—First valve; 507—Second valve;

[0063] 6—Gas pump; 601—Pump inlet pipe; 602—Pump outlet pipe;

[0064] 7—Compressor; 701—Compressor inlet pipe; 702—Compressor outlet pipe;

[0065] 8—First air duct; 9—Second air duct; 10—Third air duct; 11—Fourth air duct; 12—First air door; 13—Second air door; 14—Third air door; 15—Fourth air door. Detailed Implementation

[0066] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0067] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0068] This application provides a refrigerator that can store a first item in a first drawer and a second item in a second drawer. Figure 1 This is a front view of the refrigerator, showing that it includes a first drawer 1 and a second drawer 2. Figure 2 The AA cross-sectional view of the drawer shows that it includes the drawer shell 3, the atmospheric pressure gas chamber 4, and the preset gas chamber 5. The first drawer 1 contains a first temperature sensor 101 and a first pressure sensor 102. The second drawer 2 contains a second temperature sensor 201 and a second pressure sensor 202. The atmospheric pressure gas chamber 4 contains a third temperature sensor 401 and a third pressure sensor 402. The preset gas chamber 5 contains a fourth temperature sensor 501 and a fourth pressure sensor 502.

[0069] Figure 3 This is a top view of the drawer, from... Figure 3 As can be seen, the first damper 12 is connected to the first drawer through the first air duct 8. The first temperature sensor 101 detects the temperature in the first drawer in real time. If the temperature is higher than the first temperature range, the refrigerator is triggered to cool down. At this time, the first damper 12 opens and cold air is cooled down by the first air duct 8. When the temperature in the first drawer is within the first temperature range, the first damper closes and the refrigerator stops cooling down. In this way, the first drawer is at a low temperature.

[0070] The first pressure sensor 102 detects the pressure in the first drawer in real time. When the pressure in the first drawer is too high, the gas pump 6 is triggered to work. The gas pump 6 evacuates and depressurizes the first drawer. The gas is drawn out through the pump inlet pipe 601 so that the pressure in the first drawer is in the first pressure range. In this way, the first drawer is at low pressure, and the first item in the first drawer is stored at low temperature and low pressure.

[0071] In addition, the preset gas chamber 5 is connected to the first drawer through the second pipe 505. When the pressure in the first drawer is lower than the first pressure range, the gas pump stops working and high-pressure gas is added. At this time, the second valve 507 opens and the high-pressure gas enters the first drawer through the second pipe 505 to pressurize the first drawer and adjust the pressure to the first pressure range.

[0072] Before a user wants to open the first drawer again, the pressure in the first drawer needs to be released. The drawer shell 3 is equipped with a first pressure relief valve 301. When the first pressure relief valve 301 is opened, the pressure inside the first drawer is adjusted to normal pressure.

[0073] For example, low temperature and low pressure are suitable for preserving fresh fruits and vegetables. The principle is as follows: reduced pressure storage mainly reduces the air pressure and oxygen partial pressure, thereby decreasing the respiration rate of fruits and vegetables and inhibiting the biosynthesis of ethylene. This can delay the decomposition of chlorophyll, inhibit the synthesis of carotenoids and lycopene, and slow down processes such as starch hydrolysis, sugar increase, and acid consumption, thus delaying the ripening and senescence of fruits and vegetables. In other words, by creating a low-pressure environment, the oxygen partial pressure in the storage environment is reduced, thereby decreasing the respiration rate of fruits and vegetables and inhibiting the biosynthesis of ethylene, thus delaying the ripening and senescence of fresh fruits and vegetables.

[0074] The second air damper 13 is connected to the second drawer through the second air duct 9. The second temperature sensor 201 detects the temperature in the second drawer in real time. If the temperature is higher than the second temperature range, the refrigerator is triggered to cool down. At this time, the second air damper 13 opens and cold air is passed through the second air duct 9 to cool down the second drawer. When the temperature in the second drawer is within the second temperature range, the second air damper closes and the refrigerator stops cooling down, so the second drawer is at a low temperature.

[0075] The second pressure sensor 202 monitors the pressure in the second drawer in real time. When the pressure in the second drawer is too low, the first valve 506 on the first pipe 504 opens, allowing gas to enter the second drawer from the preset gas chamber 5 through the first pipe 504, increasing the pressure inside the second drawer. When the pressure reaches the set pressure range, the first valve 506 closes. After the pressure in the second drawer remains within the set pressure range for a certain period, the second pressure relief valve 302 opens, reducing the pressure in the second drawer to the second pressure range. Then, the second pressure relief valve closes, keeping the second drawer within the second pressure range. The pressure within the second pressure range is high, meaning the second item in the second drawer is stored under low temperature and high pressure.

[0076] The pressure ranges, from largest to smallest, are: the set pressure range, the second pressure range, and the first pressure range.

[0077] Before a user wants to open the second drawer again, the pressure in the second drawer needs to be released. The drawer shell 3 is equipped with a second pressure relief valve 302. When the second pressure relief valve 302 is opened, the pressure inside the second drawer is adjusted to normal pressure.

[0078] For example, low-temperature high-pressure storage is suitable for preserving fresh-cut fruits and vegetables. The principle is as follows: high-pressure storage mainly alters the normal physiological functions and genetic mechanisms of microorganisms by disrupting their cell membranes and cell walls, ultimately achieving sterilization and delaying spoilage. In other words, by creating a high-pressure environment, the structure of microbial cell membranes and cell walls is destroyed, reducing the proliferation of microorganisms on the surface of fresh-cut fruits and vegetables, thus extending their shelf life.

[0079] In this application, the first drawer is cooled by a first air damper, and a gas pump maintains low pressure in the first drawer, ensuring the low-temperature, low-pressure preservation of the first item inside. The second drawer is cooled by a second air damper, and high-pressure gas is introduced into the second drawer through a pre-set gas chamber, initially preserving fresh-cut fruits and vegetables under high pressure for a period. Then, a drawer depressurization valve is used to depressurize the second drawer; the pressure after depressurization is still higher than atmospheric pressure, thus ensuring the low-temperature, high-pressure preservation of the second item. This application combines depressurization and high-pressure preservation technologies, resulting in better preservation of different items in the refrigerator.

[0080] For fruits and vegetables, this application integrates decompression and high-pressure preservation technologies. It uses low temperature and low pressure to store fresh fruits and vegetables, delaying their ripening and aging; and uses low temperature and high pressure to store fresh-cut fruits and vegetables, inhibiting the growth of microorganisms and extending their shelf life; thus improving the preservation effect of different ingredients in the refrigerator.

[0081] Optionally, the refrigerator also includes an atmospheric pressure gas chamber, where the pressure is lower than that in a preset gas chamber. The atmospheric pressure gas chamber is mainly used to store atmospheric pressure gas drawn from the first drawer. The atmospheric pressure gas is drawn by the gas pump 6 and enters the first drawer through the gas outlet pipe 602. The gas is cooled in the atmospheric pressure gas chamber.

[0082] The third temperature sensor 401 detects the temperature in the atmospheric pressure gas chamber in real time. If the temperature is higher than the third temperature range, the refrigerator is triggered to cool down. At this time, the third damper 14 opens and cold air passes through the third air duct 10 to cool down the atmospheric pressure gas chamber. When the temperature in the atmospheric pressure gas chamber is within the third temperature range, the third damper closes and the refrigerator stops cooling.

[0083] The third pressure sensor 402 detects the pressure in the atmospheric pressure gas chamber in real time. When the pressure in the atmospheric pressure gas chamber is too low, the compressor 7 pressurizes the atmospheric pressure gas chamber through the compressor intake pipe 701 so that the pressure in the atmospheric pressure gas chamber reaches the third pressure range. If the pressure in the atmospheric pressure gas chamber exceeds the third pressure range, the third vent valve 403 of the atmospheric pressure gas chamber is opened to reduce the pressure in the atmospheric pressure gas chamber to reach the third pressure range.

[0084] Optionally, the preset gas chamber is mainly used to store the high-pressure gas produced by the compressor 7, and the gas is cooled here. The fourth temperature sensor 501 detects the temperature in the preset gas chamber in real time. If the temperature is higher than the fourth temperature range, the refrigerator is triggered to cool down. At this time, the fourth damper 15 opens, and cold air is cooled down in the preset gas chamber through the fourth air duct 11. When the temperature in the preset gas chamber is within the fourth temperature range, the fourth damper closes, and the refrigerator stops cooling.

[0085] The fourth pressure sensor 502 monitors the pressure in the preset gas chamber in real time. When the pressure in the preset gas chamber is too high, exceeding the fourth pressure range, the fourth vent valve 503 of the preset gas chamber is opened to reduce the pressure. If the pressure in the preset gas chamber is too low, below the fourth pressure range, the compressor 7 is triggered to operate. At this time, the gas in the atmospheric pressure gas chamber enters the compressor 7 through the compressor inlet pipe 701 for compression and pressurization, and then enters the preset gas chamber through the compressor outlet pipe 702. The pressure in the preset gas chamber increases until it reaches the fourth pressure range, and the preset gas chamber is cooled.

[0086] Based on the same technical concept, this application also provides a method for preservation, such as... Figure 4 As shown, the method includes:

[0087] Step 401: Reduce the temperature in the first drawer by using the first damper and reduce the pressure in the first drawer by using the gas pump, so that the first item in the first drawer is kept in the first temperature range and the first pressure range.

[0088] Step 402: Reduce the temperature in the second drawer through the second damper, pressurize the second drawer to the set pressure range through the preset gas chamber, and then depressurize the second drawer to the second pressure range through the vent valve, so that the second item in the second drawer is stored in the second temperature range and the second pressure range. The pressure ranges are ordered from largest to smallest as the set pressure range, the second pressure range, and the first pressure range.

[0089] For the preservation of the first item in the first drawer, when the temperature in the first drawer is higher than the first temperature range, the first damper is opened to cool the temperature in the first drawer down to the first temperature range; when the pressure in the first drawer is higher than the first pressure range, the first drawer is evacuated and depressurized by a gas pump to reduce the pressure in the first drawer down to the first pressure range, and then the fresh fruits and vegetables stored in the first drawer are preserved based on the first temperature range and the first pressure range.

[0090] For example, the control process for storing fresh fruits and vegetables is as follows: Figure 5 As shown.

[0091] ① When the user puts fresh fruits and vegetables into the first drawer, the refrigerator starts to cool down. The first air door 12 opens, and cold air passes through the first air duct 8 to cool the space inside the first drawer. At the same time, the gas pump 6 turns on to evacuate the first drawer 1.

[0092] ② The first temperature sensor 101 monitors the temperature of the first drawer 11 in real time. When the temperature Ta in the space reaches the preset value T0 (2℃<T0≤7℃), the first damper 12 closes, and the refrigerator stops cooling. At the same time, the first pressure sensor 102 monitors the pressure of the first drawer 1 in real time. When the gas pressure Pa in the space drops to P1 (10kPa<P1≤20kPa), the gas pump 6 stops working. The fourth pressure sensor 401 monitors the pressure of the atmospheric gas 4 in real time. When the gas pressure in the space reaches P5 (200kPa<P5≤300kPa), the third pressure relief valve 403 opens.

[0093] ③ The first temperature sensor 101, the first pressure sensor 102 and the control system monitor and maintain the temperature and pressure of the first drawer 1 in real time, and fresh fruits and vegetables are preserved and stored under these conditions.

[0094] Regarding the preservation of the second item in the second drawer, when the temperature in the second drawer is higher than the second temperature range, the second damper is opened to cool the temperature in the second drawer down to the second temperature range; when the pressure in the second drawer is lower than the set pressure range, the valve on the first pipe is opened to allow gas meeting the set conditions in the preset gas chamber to enter the second drawer through the first pipe and pressurize the second drawer to the set pressure range; after the pressure in the second drawer is maintained for a set time, the drawer vent valve of the second drawer is opened to reduce the pressure in the second drawer to meet the second pressure range.

[0095] For example, the control process for storing fresh-cut fruits and vegetables is as follows: Figure 6 As shown:

[0096] ① The user places fresh-cut fruits and vegetables into the second drawer 2 and selects the type of fruits and vegetables as leafy greens, melons, or sweet potatoes. The refrigerator starts cooling, the second air door 13 and the fourth air door 15 open, and cold air passes through the second air duct 9 and the fourth air duct 11 to cool the second drawer 2 and the preset gas chamber 5 respectively. At the same time, the compressor 7 starts, generates high-pressure gas and delivers it to the preset gas chamber 5.

[0097] ② The second temperature sensor 201 and the fourth temperature sensor 501 monitor the temperature of the second drawer 2 and the preset gas chamber 5 in real time, respectively. When the temperature of the second drawer Tb and the temperature of the preset gas chamber Td reach the preset value T0 (2℃<T0≤7℃), the relevant damper closes and the refrigerator stops cooling. At the same time, the fourth pressure sensor 501 monitors the pressure Pd of the preset gas chamber 5 in real time. When the gas pressure in the space reaches P5 (200kPa<P5≤300kPa), the compressor 7 stops working. The third pressure sensor 401 monitors the pressure of the atmospheric pressure gas chamber 4 in real time. When the gas pressure in the space is lower than P1 (10kPa<P1≤20kPa), the third pressure relief valve 403 opens.

[0098] ③ The first valve 506 is opened, and high-pressure gas is delivered to the second drawer 2. The second pressure sensor 202 monitors the pressure of the second drawer 2 in real time. When the gas pressure in the space rises to the set pressure range, the first valve 506 is closed, so that the second drawer 2 is maintained at this pressure for a time t (10min≤t≤20min).

[0099] The set pressure ranges for different fresh-cut fruits and vegetables are: leafy vegetables P2 (50kPa<P2≤100kPa), melons and fruits P3 (100kPa<P3≤150kPa), and sweet potatoes P4 (150Pa<P4≤200kPa).

[0100] ④ The pressure adjustment second pressure relief valve 302 is opened, so that the pressure of the second drawer 2 drops to P0 (40MPa<P0≤50MPa). At the same time, the second temperature sensor 201, the second pressure sensor 202 and the control system monitor and maintain the temperature and pressure of the second drawer 2 in real time, and fresh-cut fruits and vegetables are preserved under these conditions.

[0101] Regardless of whether fruits and vegetables are stored in the drawers, temperature sensors monitor the temperature of each compartment in real time, and the control system maintains the temperature of each compartment at the preset value.

[0102] Based on the same technical concept, this application provides a food preservation device, such as... Figure 7 As shown, the device includes:

[0103] The temperature reduction module 701 is used to reduce the temperature in the first drawer by means of the first damper and to reduce the pressure in the first drawer by means of the gas pump, so that the first item in the first drawer is kept in the first temperature range and the first pressure range.

[0104] The pressurization module 702 is used to reduce the temperature in the second drawer through the second damper, pressurize the second drawer to a set pressure range through the preset gas chamber, and then depressurize the second drawer to a second pressure range through the vent valve, so that the second item in the second drawer is kept in the second temperature range and the second pressure range.

[0105] Optionally, the reduction module 701 is used for:

[0106] When the temperature in the first drawer is higher than the first temperature range, the first damper is opened to cool the temperature in the first drawer down to the first temperature range.

[0107] When the pressure in the first drawer is greater than the first pressure range, the first drawer is evacuated and depressurized by a gas pump to reduce the pressure in the first drawer to the first pressure range, so that the first item in the first drawer is preserved in the first temperature range and the first pressure range.

[0108] Optionally, the device is also used for:

[0109] When the pressure in the first drawer is less than the first pressure range, the valve on the second pipe is opened to allow gas in the preset gas chamber to enter the first drawer through the second pipe and pressurize the first drawer.

[0110] Optionally, the booster module 702 is used for:

[0111] When the temperature in the second drawer is higher than the second temperature range, the second damper is opened to cool the temperature in the second drawer down to the second temperature range.

[0112] When the pressure in the second drawer is less than the set pressure range, the valve on the first pipe is opened to allow gas in the preset gas chamber that meets the set conditions to enter the second drawer through the first pipe and pressurize the second drawer to the set pressure range.

[0113] After the pressure in the second drawer is maintained for a set period of time, the drawer vent valve of the second drawer is opened to reduce the pressure in the second drawer to meet the second pressure range.

[0114] Optionally, the device is also used for:

[0115] Control the fourth damper to open, so that the temperature in the preset gas chamber drops to the fourth temperature range;

[0116] The compressor is turned on so that it draws gas from the atmospheric pressure gas chamber through the compressor intake pipe, compresses and pressurizes the gas, and then inputs it into the preset gas chamber through the compressor outlet pipe so that the pressure in the preset gas chamber is within the fourth pressure range.

[0117] The gas in the preset gas chamber is considered to meet the set conditions if the temperature in the preset gas chamber is within the fourth temperature range and the pressure in the preset gas chamber is within the fourth pressure range.

[0118] Optionally, the device is also used for:

[0119] Control the opening of the third damper to cool the temperature in the atmospheric pressure gas chamber to the third temperature range;

[0120] The atmospheric pressure gas chamber is pressurized by a compressor so that the pressure in the atmospheric pressure gas chamber is in the third pressure range.

[0121] Optionally, the device is also used for:

[0122] If the pressure in the atmospheric pressure gas chamber is greater than the third pressure range, the pressure in the atmospheric pressure gas chamber will be reduced through the third vent valve until the pressure in the atmospheric pressure gas chamber is within the third pressure range.

[0123] Optionally, the device is also used for:

[0124] If the pressure in the preset gas chamber is greater than the fourth pressure range, the pressure in the preset gas chamber is reduced by the fourth vent valve until the pressure in the preset gas chamber is within the fourth pressure range.

[0125] like Figure 8 As shown, this application provides an electronic device including a processor 801, a communication interface 802, a memory 803, and a communication bus 804, wherein the processor 801, the communication interface 802, and the memory 803 communicate with each other through the communication bus 804.

[0126] The memory 803 is used to store computer programs.

[0127] In one embodiment of this application, when the processor 801 executes a program stored in the memory 803, it implements the preservation method provided in any of the foregoing method embodiments, including:

[0128] The temperature in the first drawer is reduced by the first damper, and the pressure in the first drawer is reduced by the gas pump, so that the first item in the first drawer is kept in the first temperature range and the first pressure range.

[0129] The temperature in the second drawer is reduced by the second damper, and the second drawer is pressurized to a set pressure range by the preset gas chamber. Then, the pressure in the second drawer is reduced to a second pressure range by the vent valve, so that the second item in the second drawer is kept in the second temperature range and the second pressure range.

[0130] Optionally, the temperature in the first drawer is reduced by a first damper, and the pressure in the first drawer is reduced by a gas pump, so that the first item in the first drawer is stored in a first temperature range and a first pressure range, including:

[0131] When the temperature in the first drawer is higher than the first temperature range, the first damper is opened to cool the temperature in the first drawer down to the first temperature range.

[0132] When the pressure in the first drawer is greater than the first pressure range, the first drawer is evacuated and depressurized by a gas pump to reduce the pressure in the first drawer to the first pressure range, so that the first item in the first drawer is preserved in the first temperature range and the first pressure range.

[0133] Optionally, after evacuating and depressurizing the first drawer using a gas pump, the method further includes:

[0134] When the pressure in the first drawer is less than the first pressure range, the valve on the second pipe is opened to allow gas in the preset gas chamber to enter the first drawer through the second pipe and pressurize the first drawer.

[0135] Optionally, the temperature in the second drawer is reduced by a second damper, and the second drawer is pressurized to a set pressure range by a preset gas chamber, and then depressurized to a second pressure range by a vent valve, so that the second item in the second drawer is stored in the second temperature range and the second pressure range, including:

[0136] When the temperature in the second drawer is higher than the second temperature range, the second damper is opened to cool the temperature in the second drawer down to the second temperature range.

[0137] When the pressure in the second drawer is less than the set pressure range, the valve on the first pipe is opened to allow gas in the preset gas chamber that meets the set conditions to enter the second drawer through the first pipe and pressurize the second drawer to the set pressure range.

[0138] After the pressure in the second drawer is maintained for a set period of time, the drawer vent valve of the second drawer is opened to reduce the pressure in the second drawer to meet the second pressure range.

[0139] Optionally, before controlling the valve on the first pipeline to open, the method further includes:

[0140] Control the fourth damper to open, so that the temperature in the preset gas chamber drops to the fourth temperature range;

[0141] The compressor is turned on so that it draws gas from the atmospheric pressure gas chamber through the compressor intake pipe, compresses and pressurizes the gas, and then inputs it into the preset gas chamber through the compressor outlet pipe so that the pressure in the preset gas chamber is within the fourth pressure range.

[0142] The gas in the preset gas chamber is considered to meet the set conditions if the temperature in the preset gas chamber is within the fourth temperature range and the pressure in the preset gas chamber is within the fourth pressure range.

[0143] Optionally, before the compressor draws gas from the atmospheric pressure gas chamber through the compressor inlet pipe, the method further includes:

[0144] Control the opening of the third damper to cool the temperature in the atmospheric pressure gas chamber to the third temperature range;

[0145] The atmospheric pressure gas chamber is pressurized by a compressor so that the pressure in the atmospheric pressure gas chamber is in the third pressure range.

[0146] Optionally, after pressurizing the atmospheric pressure gas chamber with a compressor, the method further includes:

[0147] If the pressure in the atmospheric pressure gas chamber is greater than the third pressure range, the pressure in the atmospheric pressure gas chamber will be reduced through the third vent valve until the pressure in the atmospheric pressure gas chamber is within the third pressure range.

[0148] Optionally, after the gas is introduced into the preset gas chamber through the compressor outlet pipe, the method further includes:

[0149] If the pressure in the preset gas chamber is greater than the fourth pressure range, the pressure in the preset gas chamber is reduced by the fourth vent valve until the pressure in the preset gas chamber is within the fourth pressure range.

[0150] This application also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the steps of the preservation method provided in any of the foregoing method embodiments.

[0151] 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.

[0152] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented using software plus a general-purpose hardware platform, or of course, using hardware. Based on this understanding, the above technical solutions, in essence or the parts that contribute to the related technology, 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.

[0153] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0154] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A food preservation refrigerator, characterized in that, The refrigerator includes a first drawer, a first air door, a gas pump, a second drawer, a second air door, a preset gas chamber, a drawer vent valve, and a preservation device. The preservation device includes a lowering module and a pressurizing module. The first damper is connected to the first drawer through the first air duct, and the cooling module is used to reduce the temperature in the first drawer through the first damper so that the temperature in the first drawer is within a first temperature range. The gas pump is connected to the first drawer through a pump inlet pipe. The pressure reduction module is used to evacuate and depressurize the first drawer through the gas pump so that the pressure in the first drawer is in a first pressure range. The first temperature range and the first pressure range are suitable for the preservation of the first item. The second damper is connected to the second drawer through the second air duct. The pressurization module is used to reduce the temperature in the second drawer through the second damper so that the temperature in the second drawer is within the second temperature range. The preset gas chamber is connected to the second drawer through a first pipe. The pressurization module increases the pressure in the second drawer to a set pressure range through the preset gas chamber. The drawer vent valve is used to reduce the pressure in the second drawer to a second pressure range. The second temperature range and the second pressure range are suitable for storing the second item.

2. The refrigerator according to claim 1, characterized in that, The preset gas chamber is connected to the first drawer through a second pipe, and the preset gas chamber is used to pressurize the first drawer.

3. The refrigerator according to claim 1, characterized in that, It also includes an atmospheric pressure gas chamber, a third damper, a compressor, and a third vent valve, wherein the pressure in the atmospheric pressure gas chamber is lower than the pressure in the preset gas chamber; The third damper is connected to the atmospheric pressure gas chamber through the third air duct. The third damper is used to reduce the temperature in the atmospheric pressure gas chamber so that the temperature in the atmospheric pressure gas chamber is in a third temperature range. The compressor is connected to the atmospheric pressure gas chamber through the compressor intake pipe and is used to increase the pressure in the atmospheric pressure gas chamber. The third vent valve is used to reduce the pressure in the atmospheric pressure gas chamber. The compressor and the third vent valve are used to maintain the pressure in the atmospheric pressure gas chamber in the third pressure range.

4. The refrigerator according to claim 3, characterized in that, It also includes a fourth air damper and a fourth vent valve; The fourth damper is connected to the preset gas chamber through the fourth air duct. The fourth damper is used to reduce the temperature in the preset gas chamber, where the temperature is located in the fourth temperature range. The compressor is used to draw gas from the atmospheric pressure gas chamber through the compressor inlet pipe, compress and pressurize the gas, and then input it into the preset gas chamber through the compressor outlet pipe. The fourth vent valve is used to reduce the pressure in the preset gas chamber, and the compressor and the fourth vent valve are used to keep the pressure in the preset gas chamber within the fourth pressure range.

5. A method for preserving food in the refrigerator of claim 1, characterized in that, The method includes: The temperature in the first drawer is reduced by the first damper, and the pressure in the first drawer is reduced by the gas pump, so that the first item in the first drawer is kept in the first temperature range and the first pressure range. The temperature in the second drawer is reduced by the second damper, and the second drawer is pressurized to a set pressure range by the preset gas chamber. Then, the pressure in the second drawer is reduced to a second pressure range by the vent valve, so that the second item in the second drawer is kept in the second temperature range and the second pressure range.

6. The method according to claim 5, characterized in that, The temperature in the first drawer is reduced by a first damper, and the pressure in the first drawer is reduced by a gas pump, so that the first item in the first drawer is preserved within a first temperature range and a first pressure range, including: When the temperature in the first drawer is higher than the first temperature range, the first damper is opened to cool the temperature in the first drawer down to the first temperature range. When the pressure in the first drawer is greater than the first pressure range, the gas pump is used to evacuate and depressurize the first drawer, so that the pressure in the first drawer is reduced to the first pressure range, so that the first item in the first drawer is preserved in the first temperature range and the first pressure range.

7. The method according to claim 6, characterized in that, After the first drawer is depressurized by the gas pump, the method further includes: When the pressure in the first drawer is less than the first pressure range, the valve on the second pipe is opened to allow gas in the preset gas chamber to enter the first drawer through the second pipe and pressurize the first drawer.

8. The method according to claim 5, characterized in that, The temperature in the second drawer is reduced by a second damper, and the second drawer is pressurized to a set pressure range through a preset gas chamber. Then, the pressure in the second drawer is reduced to a second pressure range through a vent valve, so that the second item in the second drawer is preserved within the second temperature range and the second pressure range. When the temperature in the second drawer is higher than the second temperature range, the second damper is opened to cool the temperature in the second drawer down to the second temperature range. When the pressure in the second drawer is less than the set pressure range, the valve on the first pipe is opened so that the gas in the preset gas chamber that meets the set conditions enters the second drawer through the first pipe to pressurize the second drawer to the set pressure range. After the pressure in the second drawer is maintained for a set period of time, the drawer vent valve of the second drawer is opened to reduce the pressure in the second drawer to meet the second pressure range.

9. The method according to claim 8, characterized in that, Before controlling the valve on the first pipeline to open, the method further includes: The fourth damper is opened to cool the temperature in the preset gas chamber to the fourth temperature range. The compressor is controlled to start, so that the compressor draws gas from the atmospheric pressure gas chamber through the compressor inlet pipe, compresses and pressurizes the gas, and then inputs it into the preset gas chamber through the compressor outlet pipe, so that the pressure in the preset gas chamber is within the fourth pressure range; The gas in the preset gas chamber is considered to meet the set conditions if the temperature in the preset gas chamber is within the fourth temperature range and the pressure in the preset gas chamber is within the fourth pressure range.

10. The method according to claim 9, characterized in that, Before the compressor draws gas from the atmospheric pressure gas chamber through the compressor inlet pipe, the method further includes: The third damper is opened to cool the temperature in the atmospheric pressure gas chamber to the third temperature range. The atmospheric pressure gas chamber is pressurized by a compressor so that the pressure in the atmospheric pressure gas chamber is located in the third pressure range.

11. The method according to claim 10, characterized in that, After pressurizing the atmospheric pressure gas chamber using a compressor, the method further includes: If the pressure in the atmospheric pressure gas chamber is greater than the third pressure range, the pressure in the atmospheric pressure gas chamber is reduced through the third vent valve until the pressure in the atmospheric pressure gas chamber is within the third pressure range.

12. The method according to claim 9, characterized in that, After the gas is introduced into the preset gas chamber through the compressor outlet pipe, the method further includes: If the pressure in the preset gas chamber is greater than the fourth pressure range, the pressure in the preset gas chamber is reduced by the fourth vent valve until the pressure in the preset gas chamber is within the fourth pressure range.

13. An electronic device, characterized in that, It includes a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus; Memory, used to store computer programs; A processor, when executing a program stored in memory, implements the method described in any one of claims 5-12.

14. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the method described in any one of claims 5-12.

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