Refrigerator and control method therefor

Abstract

The present application provides a refrigerator and a control method therefor. The refrigerator comprises: a refrigerator body (100), provided with a refrigeration compartment; a door, connected to the refrigerator body and configured to open or close the refrigeration compartment; a drawer assembly (200), located in the refrigeration compartment; and a vacuumizing device (300), located in the refrigeration compartment and / or arranged at the top of the drawer assembly (200) and configured to vacuumize an object to be vacuumized (500). The present application achieves good convenience.

Description

Refrigerator and its control method

[0001] Related applications

[0002] This application and disclosure claim priority to the entire contents of the following Chinese patent applications filed on June 11, 2024: CN202410743628.4, entitled "Refrigerator and Control Method Thereof"; CN202410743645.8, entitled "Refrigerator and Control Method Thereof"; CN202410660389.6, entitled "Refrigerator"; and CN202410660441.8, entitled "Refrigerator and Control Method Thereof"; the entire contents of which are incorporated herein by reference. Technical Field

[0003] Some embodiments of this application relate to the field of refrigeration technology, and in particular to a refrigerator and its control method. Background Technology

[0004] A refrigerator is a refrigeration device that maintains a constant low temperature. It is also a consumer product that keeps food or other items to be vacuumed at a constant low temperature.

[0005] In related technologies, a refrigerator includes a cabinet and a vacuum device located inside the cabinet. When vacuuming is required, the item to be vacuumed must be placed in the placement port of the vacuum device. Then, the vacuuming function is activated by pressing a button, and the vacuum device evacuates the item.

[0006] However, it is not very convenient.

[0007] Summary of the Invention

[0008] To address the aforementioned issues, some embodiments of this application provide a refrigerator and its control method, which incorporates a support structure that allows users to operate the object to be vacuumed without holding it, freeing their hands and making vacuuming more convenient.

[0009] In a first aspect, some embodiments of this application provide a refrigerator, including:

[0010] The enclosure has a refrigeration compartment.

[0011] A door, which is connected to the housing, is configured to open or close the refrigeration compartment;

[0012] A drawer assembly located within the refrigeration chamber;

[0013] A vacuum pumping device is located inside the refrigeration room and is used to vacuum the object to be vacuumed.

[0014] A vacuum pneumatic assembly configured to generate negative pressure within the drawer assembly;

[0015] A support structure is located between the drawer assembly and the door body;

[0016] The vacuum pumping device includes:

[0017] A base, which covers the top of the drawer assembly, has a vacuum chamber and a placement opening that communicates with the vacuum chamber;

[0018] A cover plate, which is movably connected to the base, is configured to open or close the placement opening;

[0019] A pressure bar, which is movably connected to the cover plate, is configured to apply pressure to the cover plate or to stop applying pressure to the cover plate.

[0020] In this way, the refrigerator has more complete functions, better meets the user's needs, and is more convenient for the user.

[0021] Secondly, some embodiments of this application provide a method for controlling a refrigerator, the refrigerator including a cabinet.

[0022] The enclosure has a refrigeration compartment;

[0023] A door, which is connected to the housing, is configured to open or close the refrigeration compartment;

[0024] A drawer assembly located within the refrigeration chamber;

[0025] A vacuum pumping device is located inside the refrigeration room and is used to vacuum the object to be vacuumed.

[0026] A vacuum pneumatic assembly configured to generate negative pressure within the drawer assembly;

[0027] A support structure is located between the drawer assembly and the door body;

[0028] The vacuum pumping device includes:

[0029] A base, which covers the top of the drawer assembly, has a vacuum chamber and a placement opening that communicates with the vacuum chamber;

[0030] A cover plate, which is movably connected to the base, is configured to open or close the placement opening;

[0031] A pressure bar, movably connected to the cover plate, the pressure bar being configured to apply pressure to the cover plate or to stop applying pressure to the cover plate;

[0032] The control method includes:

[0033] Detect whether the door is closed;

[0034] If the door is closed, the vacuum pump assembly is connected to the drawer assembly;

[0035] Detect the first pressure value inside the drawer assembly;

[0036] Compare the first pressure value with the first preset value;

[0037] If the first pressure value is greater than the first preset value, the vacuum pumping component of the vacuum pneumatic assembly will start operating.

[0038] This facilitates automatic switching between the refrigerator's vacuuming function for items to be vacuumed and its vacuum drawer function.

[0039] Thirdly, some embodiments of this application provide a method for controlling a refrigerator, the refrigerator including a cabinet.

[0040] The enclosure has a refrigeration compartment;

[0041] A door, which is connected to the housing, is configured to open or close the refrigeration compartment;

[0042] A drawer assembly located within the refrigeration chamber;

[0043] A vacuum pumping device is located inside the refrigeration room and is used to vacuum the object to be vacuumed.

[0044] A vacuum pneumatic assembly configured to generate negative pressure within the drawer assembly;

[0045] A support structure is located between the drawer assembly and the door body;

[0046] The vacuum pumping device includes:

[0047] A base, which covers the top of the drawer assembly, has a vacuum chamber and a placement opening that communicates with the vacuum chamber;

[0048] A cover plate, which is movably connected to the base, is configured to open or close the placement opening;

[0049] A pressure rod, movably connected to the cover plate, is configured to apply pressure to the cover plate or to stop applying pressure to the cover plate.

[0050] The control method includes:

[0051] Receive vacuum command;

[0052] The vacuum device's vacuum pumping component is operating;

[0053] Detect the pressure value of the vacuum chamber of the vacuum pumping device;

[0054] Determine whether the pressure value is less than a preset value;

[0055] If the pressure value is less than the preset value, the vacuuming component stops operating, and the heating component of the vacuum device starts operating.

[0056] If the pressure value is not less than the preset value, the alarm device will sound an alarm after the vacuuming component of the vacuum device has been running for a preset time. Attached Figure Description

[0057] To more clearly illustrate the implementation methods in some embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0058] Figure 1 is a schematic diagram of the structure of a refrigerator provided in some embodiments of this application;

[0059] Figure 2 is a cross-sectional view of a refrigerator drawer assembly and a vacuum device provided in some embodiments of this application;

[0060] Figure 3 is a magnified view of part A in Figure 2;

[0061] Figure 4 is a schematic diagram of the structure of a vacuum device in a refrigerator without a detection switch provided in some embodiments of this application;

[0062] Figure 5 is a schematic diagram of the cover of the vacuum device in the refrigerator provided in some embodiments of this application after being opened to a certain angle;

[0063] Figure 6 is a schematic diagram showing the object to be vacuumed placed between the base and the cover plate;

[0064] Figure 7 is a cross-sectional view of Figure 6;

[0065] Figure 8 is a magnified view of part B in Figure 7;

[0066] Figure 9 is a schematic diagram of the cover of the vacuum device in the refrigerator provided in some embodiments of this application after the cover is closed;

[0067] Figure 10 is a cross-sectional view of Figure 9;

[0068] Figure 11 is a magnified view of a portion of point C in Figure 10;

[0069] Figure 12 is a schematic diagram of the vacuum device in a refrigerator after the pressure rod is pressed down according to some embodiments of this application;

[0070] Figure 13 is a cross-sectional view of Figure 12;

[0071] Figure 14 is a magnified view of part D in Figure 13;

[0072] Figure 15 is a schematic diagram of a refrigerator vacuum device equipped with a detection switch according to some embodiments of this application;

[0073] Figure 16 is a magnified view of a portion of point G in Figure 15;

[0074] Figure 17 is a schematic diagram of the structure of the base in a refrigerator provided in some embodiments of this application;

[0075] Figure 18 is a schematic diagram of the structure of the connector in the refrigerator provided in some embodiments of this application;

[0076] Figure 19 is a structural schematic diagram of the base of a refrigerator provided in some embodiments of this application from another angle;

[0077] Figure 20 is a magnified view of a portion of point E in Figure 19;

[0078] Figure 21 is a schematic diagram of the structure of the pressure bar in a refrigerator provided in some embodiments of this application;

[0079] Figure 22 is a schematic diagram of the structure of a refrigerator after the first connecting structure and the second connecting structure are connected according to some embodiments of this application;

[0080] Figure 23 is a cross-sectional view of a refrigerator provided in some embodiments of this application after the first connecting structure and the second connecting structure are connected;

[0081] Figure 24 is a schematic diagram of the structure of the refrigerator cover and pressure bar provided in some embodiments of this application;

[0082] Figure 25 is a schematic diagram of the refrigerator inner cover being closed according to some embodiments of this application;

[0083] Figure 26 is a schematic diagram of the refrigerator cover plate hovering according to some embodiments of this application;

[0084] Figure 27 is a schematic diagram of the structure of the refrigerator when the second structure abuts against the cover plate according to some embodiments of this application;

[0085] Figure 28 is a schematic flowchart of a refrigerator control method provided in some embodiments of this application;

[0086] Figure 29 is a schematic flowchart of a refrigerator control method provided in some embodiments of this application;

[0087] Figure 30 is another structural cross-sectional view of the vacuuming device and drawer assembly in a refrigerator provided in some embodiments of this application;

[0088] Figure 31 is a schematic diagram of the structure of the vacuum pneumatic assembly and drawer assembly in a refrigerator provided in some embodiments of this application;

[0089] Figure 32 is a schematic diagram of another structure of Figure 31;

[0090] Figure 33A is another schematic flowchart of a refrigerator control method provided in some embodiments of this application;

[0091] Figure 33B is another schematic flowchart of a refrigerator control method provided in some embodiments of this application;

[0092] Figure 33C is another schematic flowchart of a refrigerator control method provided in some embodiments of this application;

[0093] Figure 34 is a schematic diagram of another structure of a vacuuming device in a refrigerator provided in some embodiments of this application;

[0094] Figure 35 is a structural schematic diagram of Figure 34 from another angle;

[0095] Figure 36A is a schematic diagram of the structure of the connector in a refrigerator when the connector valve is not inserted in some embodiments of this application;

[0096] Figure 36B is a schematic diagram of the structure of the connector valve in a refrigerator when the connector is not inserted into the connector valve according to some embodiments of this application;

[0097] Figure 37 is a schematic diagram of the structure of a refrigerator when the connector is inserted into the connector valve according to some embodiments of this application;

[0098] Figure 38 is a cross-sectional view of the valve body in a refrigerator provided in some embodiments of this application along the FF direction in Figure 36;

[0099] Figure 39 is a schematic flowchart of a refrigerator control method provided in some embodiments of this application;

[0100] Figure 40 is a block diagram of the controller controlling each component according to an embodiment of this application.

[0101] Explanation of reference numerals in the attached figures:

[0102] 100 - Enclosure; 101 - Inner casing; 102 - Outer casing;

[0103] 200 - Drawer assembly; 210 - Vacuum box; 220 - Vacuum drawer; 230 - Third seal;

[0104] 300 - Vacuum pumping device; 310 - Base; 311 - Vacuum chamber; 312 - Mounting chamber; 313 - First sealing element; 314 - First connecting structure; 315 - Second connecting structure; 316 - Second limiting structure; 3161 - Cantilever part; 3162 - Abutting part; 317 - Third limiting structure; 318 - Second connecting structure; 320 - Cover plate; 321 - Second sealing element; 322 - First structure; 323 - First limiting structure; 3231 - First limiting part; 3232 - Second limiting part; 3233 - Third limiting part; 3234 - Fourth limiting part; 330 - Pressure rod; 331 - First connecting structure; 332 - Side rod; 333 - Connecting rod; 334 - Second structure; 34 0-Vacuum pneumatic assembly; 341-Vacuum extraction component; 342-Second connecting pipe; 343-Pressure switch; 344-Pressure relief valve; 345-Multi-way valve; 346-First vacuum tube; 347-Second vacuum tube; 348-First pressure detection component; 349-Second pressure detection component; 3410-First pressure relief component; 3411-Second pressure relief component; 350-Heating component; 360-Connector; 361-Connector body; 362-Hinge shaft; 363-Second connecting hole; 370-Connector assembly; 371-First connecting pipe; 372-Connector valve; 3721-Valve body; 3722-Valve core; 3723-First valve internals; 373-Connector; 380-Detection component; 390-Detection switch;

[0105] 400 - Support structure;

[0106] 500 - Items to be vacuumed;

[0107] 600-Vacuum Tank;

[0108] 700-Controller. Detailed Implementation

[0109] To address the aforementioned technical problems, the refrigerator provided in this application incorporates a drawer assembly, a vacuum device, and a vacuum pump assembly. The vacuum device is configured to vacuum the items to be vacuumed. The vacuum pump assembly is configured to generate negative pressure within the drawer assembly. Therefore, the vacuum device is configured to vacuum the items to be vacuumed, and the drawer assembly is configured to create a vacuum environment for the user to store the items. A support structure is provided, allowing the user to operate the items without holding them, freeing their hands and making vacuuming more convenient.

[0110] To make the objectives, implementation methods and advantages of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the described exemplary embodiments are only some embodiments of this application, and not all embodiments.

[0111] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0112] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclusively include, for example, a product or device that includes a series of components is not necessarily limited to those that are explicitly listed, but may include other components that are not explicitly listed or that are inherent to such product or device.

[0113] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0114] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0115] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0116] The technical solutions of some 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, and 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.

[0117] Referring to Figures 1 to 4, this embodiment provides a refrigerator, including a cabinet 100. In some embodiments, the cabinet 100 is configured with at least one cooling compartment and a door. The door is connected to the cabinet 100 and is configured to open or close at least one cooling compartment. Additionally, the refrigerator includes at least one drawer assembly 200, which can be configured for the preservation and storage of fruits, vegetables, etc. One drawer assembly 200 is correspondingly located within one cooling compartment and is disposed near the bottom wall of the cooling compartment. Exemplarily, the bottom wall of the drawer assembly 200 may abut against the bottom wall of the cooling compartment. Alternatively, the bottom wall of the drawer assembly 200 may have a small gap with the bottom wall of the cooling compartment.

[0118] In some embodiments, the refrigerator includes a vacuum device 300 configured to generate negative pressure. The vacuum device 300 is located at the top of the drawer assembly 200. This eliminates the need to occupy space in the door's insulation layer, resulting in better door insulation. In some embodiments, the vacuum device 300 is located at the top of the drawer assembly 200, close to the door. This proximity to the door facilitates user operation.

[0119] In some embodiments, the refrigerator body 100 further includes an outer shell 102. The outer shell 102 has a first receiving cavity with a first access port and a second access port. The first access port and the second access port are respectively located on opposite sides of the outer shell 102 in a first direction, which is perpendicular to the direction in which the door covers the refrigerator body 100. The first access port may be located on the front side of the outer shell 102, where the front side refers to the side when a person faces the refrigerator to open it. The second access port may be located on the rear side of the outer shell 102.

[0120] In some embodiments, the housing 100 includes a compressor compartment located inside the outer housing 102. The opening of the compressor compartment is opposite to the second loading / unloading port, through which compressors and condensers can be placed into the compressor compartment.

[0121] In some embodiments, the housing 100 includes a liner 101 located inside the outer housing 102. The liner 101 forms at least one cooling chamber. The liner 101 has a third access port opposite to a first access port, through which an object to be vacuumed can be placed into the cooling chamber.

[0122] In some embodiments, a foam layer is filled between the inner chamber 101, the outer shell 102 and the compressor chamber. The foam layer is configured to insulate the refrigeration chamber, thereby ensuring the refrigeration effect inside the refrigeration chamber.

[0123] In some embodiments, when there is one refrigeration compartment, the refrigeration compartment can be any of a refrigerator compartment, a freezer compartment, or a variable temperature compartment. When there are two or more refrigeration compartments, the multiple refrigeration compartments can include at least one or more of a refrigerator compartment, a freezer compartment, or a variable temperature compartment. When the refrigeration compartment includes a refrigerator compartment, the drawer assembly 200 and the vacuum device 300 are located inside the refrigerator compartment.

[0124] In some embodiments, a door is closable and can be installed on the front side of the housing 100 to close and open the refrigeration chamber, allowing for the placement and removal of items to be evacuated within the refrigeration chamber. It should be noted that there can be at least one door.

[0125] In some embodiments, the refrigerator includes a support structure 400. The support structure 400 is located between the drawer assembly 200 and the door. Specifically, the support structure 400 is disposed between the bottom wall of the drawer assembly 200 or the bottom wall of the refrigeration compartment and the door. When a user vacuums the object 500 or the vacuum canister 600, the support structure 400 can be configured to support the object 500 or the vacuum canister 600, thus eliminating the need for user assistance and improving ease of use.

[0126] In some embodiments, the support structure 400 includes a support plate rotatably connected to the inner bottom wall or inner side wall of the refrigeration compartment. Alternatively, the support plate is rotatably connected to the side wall of the drawer assembly 200 facing the door. During vacuuming, the support plate is rotated to position it between the door and the drawer assembly 200, and below the vacuuming device 300. After vacuuming, the support plate can be rotated to contact the drawer assembly 200 or to fit against the inner side wall of the door.

[0127] Referring to Figure 1, in some embodiments of this application, the support structure 400 includes the inner bottom wall of the cooling compartment between the drawer assembly 200 and the door. That is, along the first direction of the cabinet 100, the length of the drawer assembly 200 is less than the depth of the cabinet liner of the cabinet 100. During vacuuming, the inner bottom wall of the cooling compartment can be configured to support the object 500 to be vacuumed or the vacuum tank 600.

[0128] Referring to Figures 2 and 3, in some embodiments of this application, the vacuum device 300 includes a base 310 that covers the top of the drawer assembly 200, and the base 310 is configured with a vacuum chamber 311. The base 310 may be made of plastic.

[0129] Referring to Figures 6 and 7, in some embodiments, the base 310 is provided with a placement opening. The placement opening is configured to place the object 500 to be vacuumed. The placement opening is located near the door and communicates with the vacuum chamber 311.

[0130] Referring to Figures 5 and 6, in some embodiments, the vacuum device 300 includes a cover plate 320. The cover plate 320 is movably connected to the base 310, and the cover plate 320 moves relative to the base 310 to open or close the placement port.

[0131] In some embodiments, the cover plate 320 is a metal cover plate, which makes the cover plate 320 less prone to deformation, thereby helping to ensure sealing. Exemplarily, the cover plate 320 can be made of hard alloy, such as hard aluminum alloy.

[0132] Referring to Figures 8-9, in some embodiments, the vacuuming device 300 includes a pressure rod 330. Referring to Figures 11-14, the pressure rod 330 is movably connected to the cover plate 320. The pressure rod 330 is configured to apply pressure to or stop applying pressure to the cover plate 320. Specifically, the pressure rod 330 can be manually operated to apply or stop applying pressure to the cover plate 320, or a controller can control the pressure rod 330 to apply or stop applying pressure to the cover plate 320. Applying pressure can improve the sealing between the cover plate 320 and the base 310.

[0133] Referring to Figures 4 and 8, in some embodiments, the vacuum device 300 includes a vacuum pneumatic assembly 340. The vacuum pneumatic assembly 340 is connected to the base 310 and communicates with the vacuum chamber 311.

[0134] Referring to Figures 4, 8, and 17, the vacuum pneumatic assembly 340 includes a vacuum pump 341, which communicates with the vacuum chamber 311. The vacuum pump 341 may communicate with the first communication structure 314. The vacuum pump 341 is located near the edge of the cover plate 320. Exemplarily, the vacuum pump 341 may be a vacuum pump or a vacuum generator.

[0135] In some embodiments, the vacuum pneumatic assembly 340 further includes a second connecting pipe 342, which is connected to the vacuum pump 341 and to the first communication structure 314.

[0136] In some embodiments, the vacuum pneumatic assembly 340 further includes a pressure switch 343, which is disposed on and connected to the second connecting pipe 342. In some embodiments, the vacuum pneumatic assembly 340 further includes a pressure relief valve 344, which is disposed on and connected to the second connecting pipe 342.

[0137] Referring to Figures 15 and 16, in some embodiments, the vacuuming device 300 includes a detection switch 390. The detection switch 390 is configured to detect whether the pressure rod 330 applies pressure to the cover plate 320. A first time is defined as when the detection switch 390 detects that the pressure rod 330 is not applying pressure to the cover plate 320. A second time is defined as when the detection switch 390 detects that the pressure rod 330 is applying pressure to the cover plate 320.

[0138] In some embodiments, when the time interval between the first time and the second time is greater than a first preset time and less than a second preset time, the vacuum aerodynamic component 340 starts to operate.

[0139] In some embodiments, the first time is when the detection switch 390 stops being triggered. The second time is when the detection switch 390 is triggered. Specifically, the detection switch 390 is triggered when the pressure rod 330 applies pressure to the cover plate 320, and the detection switch 390 stops being triggered when the pressure rod 330 does not apply pressure to the cover plate 320.

[0140] When the time interval between the stop trigger detection switch 390 and the trigger detection switch 390 is greater than a first preset time and less than a second preset time, the vacuum pneumatic component 340 starts to operate.

[0141] Specifically, referring to Figure 5, when the object 500 to be vacuumed needs to be evacuated, the pressure rod 330 is flipped upwards, and the detection switch 390 is no longer triggered. The cover plate 320 is flipped upwards, opening it to a certain angle. Referring to Figures 6 to 8, the object 500 to be vacuumed is placed between the cover plate 320 and the base 310. Referring to Figures 9 to 11, the cover plate 320 is flipped downwards, making it contact with the base 310, but not tightly pressed together. Referring to Figures 12 to 16, the pressure rod 330 is flipped downwards, making the cover plate 320 and the base 310 in tight contact, forming a sealed space. The detection switch 390 is then triggered.

[0142] When the time interval between the stop trigger detection switch 390 and the trigger detection switch 390 is greater than a first preset time and less than a second preset time, it indicates that the user needs to evacuate the object 500 to be evacuated, and the vacuum pneumatic component 340 starts operating. This eliminates the need for the user to press a button to start, reducing operational steps and improving ease of operation.

[0143] In some embodiments, the first preset time can be 2-10s, 2-5s, 5-8s, or 8-10s. For example, 2s, 3s, 5s, 6s, 7s, 8s, or 10s. For example, the first preset time can be 8s. The user opens the pressure lever 330, opens the cover 320, places the object to be vacuumed 500, closes the cover 320, and presses the pressure lever 330, with an operation time of not less than 8 seconds. If the user accidentally operates the lever 330, such as touching it while taking out or placing food, the user can reset it in time after noticing. 8 seconds is sufficient time for the user to operate. Therefore, in the embodiments of the present invention, the first preset time can be 8 seconds.

[0144] In some embodiments, the second preset time can be 50s-70s, or 55-58s, or 58-62s, or 62-65s, or 65-70s, or 55-65s. For example, 50s, 55s, 58s, 62s, 65s, or 70s. For example, the second preset time can be 60s. If a user accidentally touches the lever 330 while taking out or putting in food, and the user may not notice it in time, and only notices it the next time the refrigerator is opened and resets the lever 330, then the vacuuming operation should not be performed. Generally, the operation time from opening the cover 320 to preparing for vacuuming will not exceed 60 seconds. Therefore, in the embodiments of the present invention, the second preset time can be set to 60 seconds.

[0145] After the vacuuming process is complete, the heating element 350 of the vacuuming device 300 activates, melting and bonding the vacuumed object 500 to the surface it contacts. The heating element 350 stops operating after a set time. The pressure relief valve 344 of the vacuum pneumatic assembly 340 activates, bringing the atmospheric pressure inside the sealed space back to the outside, facilitating unlocking by the user.

[0146] It should be noted that in some embodiments, the detection switch 390 can be triggered when the pressure rod 330 is flipped upward. When the pressure rod 330 is flipped downward, so that the cover plate 320 is in close contact with the base 310, the detection switch 390 stops being triggered. This embodiment will not be described in detail here.

[0147] In some embodiments of this application, the cover plate 320 is rotatably connected to the base 310. The pressure rod 330 is rotatably connected to the cover plate 320. In this way, the cover plate 320 and the pressure rod 330 occupy less space and are less likely to affect the storage space of the refrigeration compartment. In other embodiments, the cover plate 320 can be slidably connected to the base 310, and the pressure rod 330 is rotatably connected to the cover plate 320.

[0148] Referring to Figures 15 and 16, in some embodiments of this application, the pressure rod 330 is provided with a first connecting structure 331. The first connecting structure 331 is provided at one end of the pressure rod 330 near the inner side wall of the housing. One first connecting structure 331 can be provided at each end of the pressure rod 330.

[0149] In some embodiments, the base 310 is provided with a second connecting structure 315 that matches the first connecting structure 331. When the first connecting structure 331 is connected to the second connecting structure 315, the pressure rod 330 contacts the detection switch 390, and the pressure rod 330 triggers the detection switch 390. When the first connecting structure 331 is disconnected from the second connecting structure 315, the pressure rod 330 disengages from the detection switch 390, and the pressure rod 330 stops triggering the detection switch 390.

[0150] It is understandable that the detection switch 390 is triggered or deactivated by the pressure rod 330 directly contacting or disengaging from it. This ensures that the triggering or deactivation of the detection switch 390 is relatively accurate, rather than resulting in false alarms.

[0151] For example, when the pressure rod 330 rotates relative to the cover plate 320 and the first connecting structure 331 engages with the second connecting structure 315, the pressure rod 330 contacts the detection switch 390. For example, when the pressure rod 330 rotates relative to the cover plate 320 and the first connecting structure 331 disengages from the second connecting structure 315, the pressure rod 330 stops triggering the detection switch 390. Specifically, the detection switch 390 can be a contact switch, such as a micro switch. This ensures that the triggering or stopping of the detection switch 390 is performed solely by the pressure rod 330, eliminating the possibility of execution by other objects, reducing the probability of misjudgment, and improving control accuracy.

[0152] In some embodiments, the pressure rod 330 includes a contact portion 3301. When the first connecting structure 331 is connected to the second connecting structure 315, the contact portion 3301 contacts the detection switch 390, triggering the detection switch 390. When the first connecting structure 331 is disconnected from the second connecting structure 315, the contact portion 3301 disengages from the detection switch 390, and the contact portion 3301 stops triggering the detection switch 390. It should be noted that the contact portion 3301 may be disposed on the first connecting structure 331.

[0153] In other embodiments, the detection switch 390 can be a pressure sensor, which can be mounted on the cover plate 320 or the base 310. When the pressure lever 330 is flipped upwards, the pressure detected by the pressure sensor decreases, and the detection switch 390 stops being triggered. When the pressure lever 330 is flipped downwards, causing the cover plate 320 to contact the base 310 tightly, the pressure sensor is compressed, the pressure increases, and the detection switch 390 is triggered. The pressure sensor can then send a trigger signal to the controller.

[0154] In other embodiments, the detection switch 390 can be a proximity switch. When the first connection structure 331 is connected to the second connection structure 315, the contact portion 3301 approaches the detection switch 390, triggering the detection switch 390. When the first connection structure 331 is disconnected from the second connection structure 315, the contact portion 3301 moves away from the detection switch 390, and the contact portion 3301 stops triggering the detection switch 390.

[0155] Referring to Figures 15 and 16, in some embodiments, the first connecting structure 331 is a connecting hook. The second connecting structure 315 is a protrusion that matches the connecting hook. The second connecting structure 315 is located at the bottom of the base 310. The mounting cavity 312 of the base 310 is provided with a clearance hole 3302 to avoid the first connecting structure 331. The first connecting structure 331 extends to the bottom of the base 310 through the clearance hole 3302 and engages with the second connecting structure 315.

[0156] In some embodiments, as shown in Figures 22-23, the detection switch 390 can be located at the bottom of the base 310. The first connecting structure 331 extends to the bottom of the base 310 via the clearance hole 3302 and engages with the second connecting structure 315. The first connecting structure 331 contacts the detection switch 390, triggering the detection switch 390. In this way, the detection switch 390 is less likely to be accidentally touched by items to be vacuumed in the refrigerator, thus affecting the judgment.

[0157] Referring to Figures 3 and 17, in some embodiments, the base 310 may be configured with a mounting cavity 312, the top of which is open, and the mounting cavity 312 is configured to accommodate the cover plate 320, the pressure rod 330, and the vacuum pneumatic assembly 340. In this way, the cover plate 320, the pressure rod 330, and the vacuum pneumatic assembly 340 do not easily occupy storage space.

[0158] In some embodiments, a vacuum chamber 311 is provided on the bottom wall of the mounting cavity 312. The vacuum chamber 311 communicates with the mounting cavity 312. A first sealing member 313 is provided on the periphery of the vacuum chamber 311. The first sealing member 313 can seal the vacuum chamber, prevent outside air from entering, reduce the possibility of bacteria entering, and greatly improve the vacuuming effect.

[0159] In some embodiments, as shown in FIG. 24, a second sealing element 321 is provided on the side of the cover plate 320 facing the base 310. During vacuuming, the second sealing element 321 abuts against the first sealing element 313, and under the action of the pressure rod 330, they are squeezed and deformed against each other, thereby improving the sealing performance of the vacuum chamber 311. Exemplarily, the first sealing element 313 and the second sealing element 321 can be sealing rings.

[0160] In some embodiments, the vacuum device 300 includes a heating element 350, which is embedded in the bottom wall of the mounting cavity 312. The heating element 350 is located on the side of the vacuum cavity 311 facing the door. The base 310 includes a first communicating structure 314, which is disposed within and communicates with the vacuum cavity 311.

[0161] In some embodiments, as shown in Figures 17 and 18, to facilitate the connection between the cover plate 320 and the base 310, the vacuum device 300 further includes at least two connectors 360, which are embedded in the bottom wall of the mounting cavity 312, with the connectors 360 close to the side of the mounting cavity 312 away from the door body.

[0162] In some embodiments, at least two connectors 360 are spaced apart, the connectors 360 are detachably connected to the base 310, and the cover plate 320 is rotatably connected to the connectors 360. When installing the cover plate 320, after rotatably connecting at least two connectors 360 to the cover plate 320, the connectors 360 are fixed to the base 310. This provides greater convenience during cover plate 320 installation.

[0163] In some embodiments, the connector 360 includes a connector body 361, which includes a first connecting plate 3611 and a second connecting plate 3612 arranged perpendicularly to each other. A hinge shaft 362 is provided on the first connecting plate 3611, and a first connecting hole matching the hinge shaft 362 is provided on the cover plate 320, with the hinge shaft 362 inserted into the first connecting hole. A second connecting hole 363 is provided on the second connecting plate 3612, and a fastener is inserted into the base 310 through the second connecting hole 363. Exemplarily, the fastener can be a screw.

[0164] In some embodiments, when the first connecting structure 331 and the second connecting structure 315 are engaged, the first sealing member 313 and the second sealing member 321 are in a compressed state. In this application, because the first sealing member 313 and the second sealing member 321 are in a compressed state, the seal is tighter, the effect is better, and the vacuuming effect is improved.

[0165] In some embodiments, the total compression of the first seal 313 and the second seal 321 can be 0.5-2 mm, for example, it can be 0.6 mm, 0.8 mm, 1 mm, 1.2 mm, 1.5 mm or 1.8 mm.

[0166] Referring to Figures 19 to 23, in some embodiments, for ease of installation, the pressure rod 330 includes two side rods 332 and a connecting rod 333, wherein the side rods 332 and the connecting rod 333 can be separately configured. Alternatively, the side rods 332 and the connecting rod 333 can be integrally configured. Both ends of the connecting rod 333 are detachably connected to the two side rods 332 via fasteners. The side of the side rod 332 facing away from the connecting rod 333 is rotatably connected to the cover plate 320. Exemplarily, one of the side rods 332 and the cover plate 320 may be provided with a pivot, and the other may be provided with a rotating hole matching the pivot, the pivot being inserted into the rotating hole.

[0167] In some embodiments, to save space, the connecting rod 333 is located on the side of the cover plate 320 facing the door, and the two side rods 332 are located on opposite sides of the cover plate 320. The first connecting structure 331 is provided on the side rods 332.

[0168] In some embodiments of this application, referring to Figures 24 to 26, to optimize the user experience, the cover 320 should be in a suspended state after opening, so that the user does not need to hold the cover 320 when placing the object 500 to be vacuumed. To ensure the cover 320 is in a suspended state, it is provided with a first structure 322 and a first limiting structure 323. The first structure 322 is rotatably connected to the base 310. In some embodiments, the first structure 322 can be a rotating shaft or a rotating hole. The first limiting structure 323 is located around the periphery of the first structure 322.

[0169] In some embodiments, the first limiting structure 323 includes a first limiting portion 3231, a second limiting portion 3232, a third limiting portion 3233, and a fourth limiting portion 3234 connected sequentially. The distance between the outer wall of the first limiting portion 3231 and the axis of the first structure 322 is less than the distance between the outer wall of the second limiting portion 3232 and the axis of the first structure 322. The distance between the outer wall of the third limiting portion 3233 and the axis of the first structure 322 is less than the distance between the outer wall of the second limiting portion 3232 and the axis of the first structure 322. The distance between the outer wall of the fourth limiting portion 3234 and the axis of the first structure 322 is greater than the distance between the outer wall of the third limiting portion 3233 and the axis of the first structure 322.

[0170] Referring to Figure 34, the base 310 is provided with a second limiting structure 316, which is an elastic limiting structure 316 that matches the third limiting part 3233. When the cover plate 320 closes the placement opening, the second limiting structure 316 abuts against the third limiting part 3233; when the cover plate 320 opens the placement opening, the second limiting structure 316 abuts against the first limiting part 3231. In some embodiments, referring to Figure 25, the second limiting structure 316 includes a cantilever part 3161 and an abutting part 3162 connected to each other. One end of the cantilever part 3161 is connected to the base 310, and the abutting part 3162 is disposed on the top of the cantilever part 3161 and away from the end of the cantilever part 3161 connected to the base 310.

[0171] Understandably, when the cover 320 closes the placement opening, the abutting portion 3162 in the second limiting structure 316 abuts against the third limiting portion 3233. When the user flips the cover 320 upwards, the external force applied by the user causes the second limiting structure 316 to deform and move downwards, disengaging the abutting portion 3162 from the third limiting portion 3233 and abutting against the first limiting portion 3231. Since the distance between the outer wall of the first limiting portion 3231 and the axis of the first structure 322 is less than the distance between the outer wall of the second limiting portion 3232 and the axis of the first structure 322, and the distance between the outer wall of the third limiting portion 3233 and the axis of the first structure 322 is less than the distance between the outer wall of the second limiting portion 3232 and the axis of the first structure 322, the first limiting structure 323 interferes with the second limiting structure 316, preventing the cover 320 from rotating under gravity.

[0172] When the user flips the cover plate 320 downwards, the external force applied by the user causes the second limiting structure 316 to deform and move downwards, thereby forcibly rotating the cover plate 320 until the second limiting structure 316 abuts against the third limiting part 3233. In other words, when the cover plate 320 is rotated to the pressing position, the second limiting structure 316 and the first limiting structure 323 no longer interfere with each other.

[0173] In this application, a first limiting structure 323 and a second limiting structure 316 are provided to restrict the cover plate 320 to a fixed position, so that the user can place the object 500 to be vacuumed without having his hand covered by the cover plate 320.

[0174] Referring to Figure 17, in some embodiments, the number of second limiting structures 316 can be at least two, and the at least two second limiting structures 316 are spaced apart along the axial direction of the first structure 322. The second limiting structures 316 are located within the mounting cavity 312 and are located on the side away from the door body.

[0175] Referring to Figure 26, in some embodiments, the base 310 is provided with a third limiting structure 317 to limit the maximum opening angle of the cover 320. When the cover 320 opens the placement opening, the second limiting structure 316 abuts against the first limiting part 3231, and the cover 320 abuts against the third limiting structure 317.

[0176] Referring to Figures 21 and 27, in some embodiments of this application, to allow the user to rotate the cover plate 320 using the pressure rod 330 without requiring secondary operation, the pressure rod 330 is provided with a second structure 334, configured to rotate the cover plate 320 relative to the base 310. When the pressure rod 330 rotates relative to the base 310 and the second structure 334 abuts against the cover plate 320, the pressure rod 330 drives the cover plate 320 to rotate relative to the base 310. The second structure 334 can be a protrusion.

[0177] For example, when the pressure rod 330 rotates about 25°, the pressure rod 330 disengages from the base 310, and at the same time, the second structure 334 contacts the cover plate 320. At this time, the pressure rod 330 can drive the cover plate 320 to open.

[0178] Referring to Figure 1, in some embodiments of this application, the drawer assembly 200 includes a drawer body, which is slidably connected to the cabinet 100. The drawer body has a top opening, and a base 310 covers the top of the drawer body to close the opening. It is understood that using the base 310 as the top cover of the drawer body increases the size of the base 310, thereby facilitating the installation of reinforcing structures on the base 310, improving its overall strength, and reducing deformation. Furthermore, using the base 310 as the top cover of the drawer body saves costs and reduces space occupancy.

[0179] Referring to Figure 28, some embodiments of this application provide a refrigerator control method, including:

[0180] S1. Receive vacuuming command. For example, an operation button may be provided on the base 310. When the user presses the button, the refrigerator receives a vacuuming command.

[0181] S2. The vacuum pumping unit 341 of the vacuum pumping device 300 is activated. For example, the vacuum pumping unit 341 of the vacuum pumping device 300 is activated according to the vacuum pumping command, that is, the vacuum pump starts to run.

[0182] S3. Detect the first pressure value of the vacuum chamber 311 of the vacuum pumping device 300. For example, the first pressure value of the vacuum chamber 311 can be detected by a pressure switch 343, or by a pressure sensor.

[0183] S4. Determine whether the first pressure value is less than a first preset value. For example, the first preset value can be 0.5 atmospheres.

[0184] S5. If the first pressure value is less than the first preset value, the vacuum pump 341 stops operating, and the heating element 350 of the vacuum pumping device 300 starts operating. For example, if the first pressure value is less than 0.5 atmospheres, the vacuum pump stops operating. After the heating element 350 operates for a certain period of time, the heating element 350 stops heating.

[0185] For example, the heating element 350 can be a heating plate. After the heating element 350 operates for one minute, the heating element 350 stops heating. After the heating element 350 stops heating, the pressure relief valve 344 opens. After the pressure relief valve 344 is open for 10 seconds, the pressure relief valve 344 closes.

[0186] S6. If the first pressure value is not less than the first preset value, after the vacuuming component 341 of the vacuuming device 300 has run for a preset time, the alarm device will sound an alarm. The alarm device will sound an alarm to remind the user that the object 500 to be vacuumed has been placed incorrectly, so that the object 500 to be vacuumed can be put back in. The alarm device may include at least one of a light, sound, or image alarm.

[0187] Specifically, the vacuuming component 341 of the vacuuming device 300 can trigger an alarm after 120 seconds of operation. It should be noted that the time and pressure parameters can be set according to requirements, and this embodiment does not impose specific limitations on them.

[0188] In this embodiment, the user presses the button on the base 310 to trigger a vacuuming command. After receiving the vacuuming command, the refrigerator controls the vacuuming component 341 of the vacuuming device 300 to operate, i.e., the vacuum pump starts running. Next, the pressure switch 343 detects the first pressure value of the vacuum chamber 311, or the pressure sensor detects the first pressure value of the vacuum chamber 311. Then, it is determined whether the first pressure value is less than a first preset value. If the first pressure value is less than the first preset value, the vacuuming component 341 stops operating, and the heating component 350 of the vacuuming device 300 starts operating. If the first pressure value is not less than the first preset value, after the vacuuming component 341 of the vacuuming device 300 has run for a preset time, the alarm device sounds an alarm, thereby prompting the user that the object 500 to be vacuumed has been placed incorrectly, and the user can then reposition the object 500. This allows the user to know in a timely manner whether the object 500 to be vacuumed has been placed incorrectly, improving the accuracy of object placement.

[0189] Referring to Figure 29, in some embodiments, this application provides a refrigerator control method, the method comprising:

[0190] S101. When the detection switch detects that the pressure rod is not applying pressure to the cover plate, it acquires the first time. Specifically, when the pressure rod 330 is flipped upwards, the detection switch 390 stops being triggered, and the pressure rod 330 no longer applies pressure to the cover plate 320. The detection switch 390 can send a signal to the controller, and the controller acquires the first time. That is, when the detection switch 390 stops being triggered, the first time is acquired.

[0191] S102. When the detection switch detects that the pressure rod is applying pressure to the cover plate, a second time is acquired. Specifically, the pressure rod 330 is flipped downwards, applying pressure to the cover plate 320, causing the cover plate 320 to contact the base 310 tightly, forming a sealed space. The detection switch 390 is then triggered. The detection switch 390 can send a signal to the controller, which then acquires the second time. That is, when the detection switch 390 is triggered, the second time is acquired.

[0192] S103. Obtain the time interval between the first time and the second time. Specifically, the controller can calculate and obtain the time interval between the first time and the second time. In this application, obtaining the first time and the second time and comparing the first time and the second time is to improve the accuracy of the judgment in determining whether the detection switch 390 has been falsely triggered.

[0193] S104, compare the time interval, the first preset time, and the second preset time. Specifically, the controller can compare the time interval, the first preset time, and the second preset time.

[0194] S105. If the time interval is greater than the first preset time and less than the second preset time, the vacuum pneumatic assembly starts operating. Specifically, when the time interval between the stop trigger detection switch 390 and the trigger detection switch 390 is greater than the first preset time and less than the second preset time, it indicates that the user needs to evacuate the object 500 to be evacuated, and the vacuum pneumatic assembly 340 starts operating. In this way, the user does not need to press a button to start, reducing the number of operation steps and improving the convenience of operation.

[0195] In this embodiment, when the detection switch 390 is stopped, a first time is acquired, and when the detection switch 390 is triggered, a second time is acquired. Then, the time interval between the first and second times is acquired. Next, the time interval, a first preset time, and a second preset time are compared. If the time interval is greater than the first preset time and less than the second preset time, it indicates that the user needs to vacuum the object 500, and the vacuum pneumatic assembly 340 is controlled to start operating. In this way, the user does not need to press a button to start, reducing the number of operation steps and improving the convenience of operation.

[0196] In some embodiments of this application, the refrigerator also includes an alarm device. The alarm device sounds an alarm if the time interval is not greater than a first preset time. The alarm device also sounds an alarm if the time interval is not less than a second preset time. This alerts the user, allowing them to confirm whether there has been any misoperation. Exemplarily, the alarm can be a buzzer or a light device.

[0197] In some embodiments of this application, the refrigerator further includes a control button configured to control the operation of the vacuum actuation assembly 340. If the time interval is not less than a second preset time, an alarm device sounds an alarm, followed by receiving a first control command via the control button, and the vacuum actuation assembly 340 starting to operate. Thus, after user confirmation, the vacuum actuation assembly 340 can be controlled to start operating via the control button, simplifying the process and eliminating the need to re-trigger and de-trigger the detection switch 390.

[0198] In some embodiments of this application, the refrigerator further includes a control button configured to control the operation of the vacuum actuation assembly 340. If the time interval is not less than a second preset time, an alarm device sounds an alarm, followed by receiving a first control command via the control button, and the vacuum actuation assembly 340 starting to operate. Thus, after user confirmation, the vacuum actuation assembly 340 can be controlled to start operating via the control button, simplifying the process and eliminating the need to re-trigger and de-trigger the detection switch 390.

[0199] In some embodiments, after receiving a first control command via control buttons, the method further includes:

[0200] The detection switch 390 is activated. Specifically, activation of the detection switch 390 can be determined by whether it sends a signal to the controller. This ensures that when the detection switch 390 is activated, the pressure rod 330 applies pressure to the cover plate 320, ensuring tight contact between the cover plate 320 and the base 310, forming a sealed space. If activated, the vacuum pneumatic assembly 340 begins operation. If not activated, the vacuum pneumatic assembly 340 does not operate, and the alarm device sounds an alarm. This effectively prevents accidental operation.

[0201] In some embodiments of this application, the refrigerator further includes a pressure detection device. Exemplarily, the pressure detection device can be a pressure switch. After the vacuum pump assembly 340 starts operating, it further includes detecting the pressure of the vacuum chamber through the pressure detection device. After the vacuum pump assembly 340 has been running for a third preset time, a first pressure value is compared with a first preset value. If the first pressure value is not less than the first preset value, an alarm device sounds an alarm. This allows for a timeout alarm, prompting the user to tidy up the items 500 to be vacuumed and restart the operation.

[0202] For example, the third preset time can be 120 seconds. It is understood that the vacuum pump's operating time generally does not exceed 120 seconds. If the set pressure value is not reached after 120 seconds, it may be because the object to be vacuumed (500) is not placed evenly. At this point, the vacuum pump stops working, and an alarm prompts the user to tidy up the object (500) and restart the operation. For example, the first preset value can be 0.5 atmospheres. It should be noted that the time and pressure parameters can be set according to requirements, and this embodiment does not impose specific limitations.

[0203] In some embodiments of this application, after the vacuum pneumatic assembly 340 starts operating, it further includes receiving a second control command via a control button. The vacuum pneumatic assembly 340 then stops operating. This allows the operation of the vacuum pneumatic assembly 340 to be stopped, facilitating user control. For example, the second control command could be a double-click of the control button.

[0204] In some embodiments of this application, after the vacuum pneumatic assembly 340 starts operating, it further includes: the pressure lever 330 stopping the trigger detection switch 390, thereby stopping the operation of the vacuum pneumatic assembly 340. The operation of the vacuum pneumatic assembly 340 can be stopped by stopping the trigger detection switch 390 via the pressure lever 330, thus facilitating user control.

[0205] Referring to Figures 1, 30, and 32, some embodiments of this application provide a refrigerator, which includes a drawer assembly 200. The drawer assembly 200 is located within the refrigeration compartment. The drawer assembly 200 is a vacuum drawer assembly.

[0206] The refrigerator includes a vacuum device 300 and a vacuum actuation assembly 340. The vacuum device 300 is located in the refrigeration compartment and is configured to vacuum an object 500 to be vacuumed. The vacuum actuation assembly 340 is configured to generate negative pressure within the drawer assembly 200 or within the vacuum chamber 311 of the vacuum device 300.

[0207] The refrigerator provided in this embodiment includes a drawer assembly 200 and a vacuum device 300. The vacuum device 300 is used to vacuum the items 500 to be vacuumed, and the drawer assembly 200 is used to create a vacuum environment for users to store the items to be vacuumed. This makes the refrigerator more functional, better meets user needs, and more convenient for users.

[0208] In some embodiments of this application, the vacuum pneumatic assembly 340 includes a vacuum pumping component 341 and a multi-way valve 345. The vacuum pumping component 341 is connected to the multi-way valve 345, which is connected to the vacuum chamber 311 of the vacuum pumping device 300 via a first vacuum tube 346 and to the drawer assembly 200 via a second vacuum tube 347. This arrangement simplifies the structure and reduces the cost of the vacuum pneumatic assembly 340. For example, the vacuum pumping component 341 can be a vacuum pump, and the multi-way valve 345 can be a three-way valve or a four-way valve, etc.

[0209] In some embodiments, the vacuum pneumatic assembly 340 further includes a muffler. The muffler may be in communication with the vacuum pump 341.

[0210] In some embodiments of this application, the vacuum pneumatic assembly 340 further includes a first pressure detection element 348, which is connected to a first vacuum tube 346. The first pressure detection element 348 can be configured to detect the pressure of the vacuum chamber 311 of the vacuum pumping device 300, thereby facilitating control.

[0211] In some embodiments, the vacuum pneumatic assembly 340 further includes a second pressure sensor 349, which is in communication with the second vacuum tube 347. The second pressure sensor 349 can be configured to detect pressure within the drawer assembly 200 for ease of control.

[0212] In some embodiments of this application, the vacuum pneumatic assembly 340 further includes a first pressure relief component 3410, which is connected to a first vacuum tube 346. The first pressure relief component 3410 is configured to relieve pressure in the vacuum pumping device 300. The first pressure relief component 3410 may be a pressure relief valve.

[0213] In some embodiments, the vacuum pneumatic assembly 340 further includes a second pressure relief element 3411, which is in communication with the second vacuum tube 347. The second pressure relief element 3411 is configured to relieve pressure on the drawer assembly 200. The second pressure relief element 3411 may be a pressure relief valve.

[0214] Referring to Figures 5 to 17, in some embodiments of this application, the vacuuming device 300 includes a base 310. The base 310 has a vacuum chamber 311 and a placement opening that communicates with the vacuum chamber 311. A first vacuum tube 346 is also connected to the vacuum chamber 311. The placement opening is used to place the object 500 to be vacuumed. It should be noted that the structure of the base 310 can be the same as in the above embodiments, and will not be described again in this embodiment.

[0215] In some embodiments, the vacuum device 300 includes a cover plate 320. The cover plate 320 is movably connected to the base 310, and the cover plate 320 is configured to open or close the placement opening. It should be noted that the structure of the cover plate 320 can be the same as in the above embodiments, and will not be described again in this embodiment.

[0216] In some embodiments, the vacuum device 300 includes a pressure rod 330. It should be noted that the structure of the pressure rod 330 can be the same as in the above embodiments, and will not be described again here. The pressure rod 330 is movably connected to the cover plate 320, and the pressure rod 330 is configured to apply pressure to the cover plate 320 or to stop applying pressure to the cover plate 320. This helps to ensure a tight contact between the cover plate 320 and the base 310, resulting in better sealing of the vacuum chamber 311.

[0217] In some embodiments, the vacuuming device 300 includes a detection switch 390. When the pressure rod 330 applies pressure to the cover plate 320, the detection switch 390 is triggered; when the pressure rod 330 does not apply pressure to the cover plate 320, the detection switch 390 stops triggering. This facilitates the judgment and control of the state of the vacuuming device 300. It should be noted that the structure and arrangement of the detection switch 390 can be the same as in the above embodiments, and will not be described again in this embodiment.

[0218] Referring to Figure 30, in some embodiments of this application, the base 310 covers the top of the drawer assembly 200, making the drawer assembly 200 closer to the vacuum device 300, which is beneficial to the layout of the vacuum pneumatic assembly 340, and the overall pipe length can be shorter, reducing costs and saving space.

[0219] Referring to Figure 30, in some embodiments of this application, the drawer assembly 200 includes a vacuum chamber 210 located within a refrigeration room. The vacuum chamber 210 has an opening facing the door. The drawer assembly 200 includes a vacuum drawer 220 located inside the vacuum chamber 210 through the opening and slidably connected to the vacuum chamber 210 to open or close the opening. It is understood that the drawer assembly 200 provided in this embodiment has a simpler structure and lower cost.

[0220] In some embodiments, a third seal 230 is provided on the side of the vacuum box 210 facing the door, or on the side of the vacuum drawer 220 facing the opening of the vacuum chamber 311. The third seal 230 is configured to seal the gap between the vacuum drawer 220 and the vacuum box 210, thereby improving the sealing effect. The vacuum box 210 has an exhaust pipe that communicates with the outside.

[0221] Referring to Figure 33A, some embodiments of this application provide a refrigerator control method applied to the aforementioned refrigerator, the method comprising:

[0222] S201. Detect whether the door is closed. Specifically, this can be done using sensors.

[0223] S202. If the door is closed, the vacuum actuation assembly connects to the drawer assembly. Specifically, after the refrigerator door is closed, drawer assembly 200 operates by default. Multi-way valve 345 switches to the drawer assembly 200 circuit.

[0224] S203. If the door is opened, the vacuum pump assembly connects to the vacuum device. Specifically, after the refrigerator door is opened, the vacuum bag function is activated, and the multi-way valve 345 switches to the vacuum device 300 circuit.

[0225] It can be understood that the refrigerator control method provided in this embodiment facilitates the automatic switching between the refrigerator's function of removing items to be vacuumed and its vacuum drawer function.

[0226] Referring to Figure 33B, in some embodiments of this application, if the door is closed, the vacuum pneumatic assembly 340 communicates with the drawer assembly 200, and then includes:

[0227] S204a. Detect the second pressure value inside the drawer assembly 200. Specifically, this can be detected by the second pressure detection element 349.

[0228] S205a. Compare the second pressure value with the second preset value. Specifically, the second preset value can be 0.8 atmospheres.

[0229] S206a. If the second pressure value is greater than the second preset value, the vacuum component 341 of the vacuum pneumatic assembly 340 starts to operate.

[0230] It is understood that the control methods provided in some embodiments of this application do not require user button operation and can achieve automatic control, which is highly convenient.

[0231] In some embodiments, after the vacuum pump component 341 of the vacuum pump assembly 340 starts operating if the second pressure value is greater than the second preset value, the system further includes detecting a third pressure value inside the drawer assembly 200, comparing the third pressure value with the third preset value, and stopping the vacuum pump component 341 of the vacuum pump assembly 340 if the third pressure value is not greater than the third preset value. For example, when the vacuum pump is operating and the air pressure inside the drawer assembly 200 is less than or equal to 0.7 atmospheres, the vacuum pump stops operating.

[0232] In some embodiments, if the second pressure value is greater than the second preset value, after the vacuum pumping component 341 of the vacuum pumping assembly 340 starts operating, the method further includes: after the vacuum pumping component 341 has been operating for a preset time, detecting a fourth pressure value inside the drawer assembly 200; if the fourth pressure value is greater than the fourth preset value, an alarm device sounds an alarm. That is, a fault mode is included. If the vacuum drawer mode operates for more than a preset time (e.g., 8 minutes), and the air pressure inside the drawer assembly 200 still has not reached 0.7 atmospheres, the vacuum pump stops operating and an alarm sounds.

[0233] Referring to Figure 33C, in some embodiments of this application, if the door is opened, the vacuum pneumatic assembly 340 is connected to the vacuum pumping device 300, and then includes:

[0234] S204b: When the detection switch detects that the pressure rod is not applying pressure to the cover plate, the first moment is acquired. Specifically, the first moment is acquired when the detection switch 390 is stopped from being triggered.

[0235] S205b: When the detection switch detects that the pressure rod is applying pressure to the cover plate, a second time is acquired. Specifically, when the detection switch 390 is triggered, the second time is acquired.

[0236] S206b, Obtain the time interval between the first and second time points.

[0237] S207b: If the time interval is greater than the first preset time and less than the second preset time, the vacuum pneumatic assembly 340 starts operating. When the time interval between the stop trigger detection switch 390 and the trigger detection switch 390 is greater than the first preset time and less than the second preset time, it indicates that the user needs to evacuate the object 500 to be evacuated, and the vacuum pneumatic assembly 340 starts operating. This eliminates the need for the user to press a button to start, reducing operational steps and improving ease of operation. It should be noted that the time and pressure parameters can be set according to requirements; this embodiment does not impose specific limitations.

[0238] In this embodiment, when the detection switch 390 is stopped, a first time is acquired, and when the detection switch 390 is triggered, a second time is acquired. Then, the time interval between the first and second times is acquired. Next, the time interval, a first preset time, and a second preset time are compared. If the time interval is greater than the first preset time and less than the second preset time, it indicates that the user needs to vacuum the object 500, and the vacuum pneumatic assembly 340 is controlled to start operating. In this way, the user does not need to press a button to start, reducing the number of operation steps and improving the convenience of operation.

[0239] Referring to Figures 34 and 35, some embodiments of this application provide a refrigerator. A vacuuming device 300 can vacuum both the object 500 to be vacuumed and the vacuum container 600, better meeting customer needs and improving convenience. The vacuuming device 300 includes a connector assembly 370, which is disposed on a base 310. When the connector assembly 370 is in communication with the vacuum container 600, it is also in communication with a vacuum chamber 311. The connector assembly 370 is configured to vacuum the vacuum container 600.

[0240] In some embodiments of this application, the connector assembly 370 includes: a first connecting pipe 371, which communicates with a vacuum chamber 311. A second communicating structure 318 is disposed inside the vacuum chamber 311, which communicates with the vacuum chamber 311 and is connected to the first connecting pipe 371.

[0241] Referring to Figures 36A-36B to 38, in some embodiments, the connector assembly 370 includes a connector valve 372, which is embedded in the base 310 and connected to the first connecting pipe 371. It is understood that embedding the connector valve 372 in the base 310 saves space and makes it less susceptible to damage from impacts.

[0242] In some embodiments, the connector assembly 370 includes a connector 373, which communicates with the vacuum container 600. A communication hole is provided on the side wall of the connector 373. When the connector 373 is connected to the connector valve 372, the connector 373 and the first connecting pipe 371 are connected through the connector valve 372, allowing the vacuum container 600 to be evacuated. When the connector 373 is not connected to the connector valve 372, the first connecting pipe 371 is not connected to the outside of the vacuum chamber 311 through the connector valve 372, thus allowing the object to be evacuated 500 to be evacuated independently. It should be noted that the object to be evacuated 500 and the vacuum container 600 can be evacuated using the same vacuum pneumatic assembly 340, thereby saving costs and reducing space occupation.

[0243] In some embodiments of this application, connector 373 is a metal component, and detection element 380 is a Hall sensor. It is understood that compared to detection sensors such as progressive switches, using a Hall sensor for detection element 380 can effectively improve detection accuracy. It is less likely that the detection element 380 will misjudge due to objects placed by the user to be vacuumed.

[0244] In some embodiments of this application, the connector valve 372 includes a valve body 3721 and a valve core 3722. The valve body 3721 is embedded in the base 310, and a first connecting pipe 371 is connected to the valve body 3721. The valve core 3722 is located inside the valve body 3721 and is slidably connected to it. The valve core 3722 slides relative to the valve body 3721, thereby allowing the valve body 3721 to be either through or not through.

[0245] In some embodiments, the connector valve 372 further includes a first valve inner element 3723 located within the valve body 3721. One end of the first valve inner element 3723 along its force direction (e.g., elastic force) is connected to the valve body 3721, and the other end is connected to the valve core 3722. Exemplarily, the first valve inner element 3723 may be an elastic element, such as a spring or elastic rubber.

[0246] Understandably, when connector 373 is inserted into valve body 3721, valve core 3722 disengages from valve body 3721, and connector 373 and the first connecting pipe 371 are connected through valve body 3721. When connector 373 is not inserted into valve body 3721, under the elastic force of the first valve internal 3723, the top of valve core 3722 remains in contact with the inner wall of valve core 3722, thus preventing valve body 3721 from communicating. When connector 373 is inserted into valve body 3721, connector 373 moves valve core 3722 downwards, disengaging valve core 3722 from the inner wall of valve body 3721, allowing air to flow through the gap between the outer wall of valve core 3722 and the inner wall of valve body 3721, thus connecting valve body 3721.

[0247] In some embodiments of this application, the vacuum pumping device 300 further includes a detection element 380. The detection element 380 is configured to detect whether the connector assembly 370 is in communication with the vacuum chamber 311. The detection element 380 is connected to the base 310 and embedded in the base 310. The detection element 380 is configured to detect whether the connector 373 is connected to the connector valve 372. Embedding the detection element 380 in the base 310 helps to reduce space occupation.

[0248] It is understandable that when vacuuming the object to be vacuumed 500 and the vacuum tank 600, the pressure inside the vacuum chamber 311 is different, and the running time of the vacuuming component 341 is different. The detection component 380 is used to detect whether the connector 373 is connected to the connector valve 372, so as to determine whether the user needs to vacuum the object to be vacuumed 500 or the vacuum tank 600, and thus match the pressure and running time.

[0249] Referring to Figure 39, some embodiments of this application provide a refrigerator control method applied to the aforementioned refrigerator, the method comprising:

[0250] S301, Receive vacuum command. For example, an operation button may be provided on the base 310. When the user presses the button, the refrigerator receives a vacuum command.

[0251] S302, the vacuum pumping component 341 of the vacuum pumping device 300 is activated. For example, the vacuum pump starts operating.

[0252] S303. Detect whether a vacuum tank 600 is connected. For example, a Hall sensor detects whether connector 373 is inserted into valve body 3721.

[0253] S304. If not, detect the fifth pressure value of the vacuum chamber 311 of the vacuum pumping device 300 and determine whether the fifth pressure value is less than the fifth preset value; if the fifth pressure value is less than the fifth preset value, the vacuum pumping component 341 stops operating, and the heating component of the vacuum device starts operating; if the fifth pressure value is not less than the fifth preset value, after the vacuum pumping component 341 has been running for a first preset time, the alarm device issues the first alarm. If not, it means that the user is vacuuming the object 500 to be vacuumed.

[0254] For example, a pressure switch 343 can be used to detect a fifth pressure value of the vacuum chamber 311, and the fifth preset value can be 0.5 atmospheres.

[0255] When the fifth pressure value is less than 0.5 atmospheres, the heating element 350 starts operating. After one minute of operation, the heating element 350 stops heating. After the heating element 350 stops heating, the pressure relief valve 344 opens. After 10 seconds of opening, the pressure relief valve 344 closes. After the vacuuming element 341 operates for 120 seconds, if the fifth pressure value is still not less than 0.5 atmospheres, the alarm device issues its first alarm, thus alerting the user that the object 500 to be vacuumed has been placed incorrectly, and the user should then reinsert the object 500.

[0256] S305. If yes, detect the sixth pressure value of the vacuum chamber 311 of the vacuum pumping device 300 and determine whether the sixth pressure value is less than the sixth preset value; if the sixth pressure value is less than the sixth preset value, the vacuum pumping component 341 stops operating; if the sixth pressure value is not less than the sixth preset value, the alarm device issues a second alarm after the vacuum pumping component 341 has been running for a second preset time. If no, it means that the user is evacuating the vacuum tank 600.

[0257] For example, pressure switch 343 can be used to detect the sixth pressure value of vacuum chamber 311, which can be a preset value of 0.7 atmospheres. When the sixth pressure value is less than 0.7 atmospheres, the vacuum pump stops running. After the vacuum pump 341 has been running for 180 seconds, if the sixth pressure value is still not less than 0.7 atmospheres, the alarm device issues a second alarm, thereby prompting the user that the vacuum tank 600 is connected incorrectly, and thus the vacuum tank 600 can be reconnected. It should be noted that the time and pressure parameters can be set according to requirements, and this embodiment does not impose specific limitations on them.

[0258] Figure 40 is a block diagram of the controller controlling each component according to an embodiment of this application.

[0259] As shown in Figure 40, the refrigerator 100 of this application is also provided with a controller 700, which controls the operation of components such as the detection switch 390. For specific control operations, please refer to the control method described above, which will not be repeated here.

[0260] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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 or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0261] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. A refrigerator, wherein, The application relates to a refrigerator, which comprises: a cabinet configured with a refrigeration compartment; a door body connected with the cabinet, configured to open or close the refrigeration compartment; a drawer assembly located in the refrigeration compartment; a vacuumizing device located in the refrigeration compartment, configured to vacuumize an object to be vacuumized; a vacuum pneumatic assembly configured to generate negative pressure in the drawer assembly; a support structure located between the drawer assembly and the door body; wherein the vacuumizing device comprises: a base cap covering the top of the drawer assembly, configured with a vacuum cavity and a placing opening in communication with the vacuum cavity; a cover plate movably connected with the base, configured to open or close the placing opening; a pressing rod movably connected with the cover plate, configured to apply pressure to the cover plate or stop applying pressure to the cover plate. 2.The refrigerator of claim 1, wherein, The vacuum pneumatic assembly comprises: a vacuumizing piece; a multi-way valve in communication with the vacuumizing piece, in communication with the vacuumizing device through a first vacuum pipe and in communication with the drawer assembly through a second vacuum pipe. 3.The refrigerator according to claim 2, wherein, The vacuum pneumatic assembly further comprises a first pressure detecting piece in communication with the first vacuum pipe; and / or, the vacuum pneumatic assembly further comprises a second pressure detecting piece in communication with the second vacuum pipe.

4. The refrigerator of claim 2, wherein, The vacuum pneumatic assembly further comprises a first pressure relief piece in communication with the first vacuum pipe; and / or, the vacuum pneumatic assembly further comprises a second pressure relief piece in communication with the second vacuum pipe. 5.The refrigerator of claim 2, wherein, The vacuumizing device further comprises: the first vacuum pipe in communication with the vacuum cavity; a detection switch configured to detect whether the pressing rod applies pressure to the cover plate.

6. The refrigerator according to any one of claims 1-5, wherein, The vacuum pneumatic assembly is further configured to generate negative pressure in the vacuumizing device.

7. The refrigerator of claim 6, wherein, The vacuumizing device further comprises: the vacuum pneumatic assembly connected with the base and in communication with the vacuum cavity.

8. The refrigerator according to claim 5 or 7, wherein, The pressing rod is provided with a first connecting structure, and the base is provided with a second connecting structure matched with the first connecting structure; when vacuumizing, the cover plate rotates relative to the base to close the placing opening, the pressing rod rotates relative to the cover plate, the pressing rod abuts against the cover plate, and the first connecting structure and the second connecting structure are clamped to apply pressure to the cover plate. 9.The refrigerator according to claim 5 or 7, wherein, The pressing rod is provided with a second structure; when the pressing rod rotates relative to the base and the second structure abuts against the cover plate, the pressing rod drives the cover plate to rotate relative to the base. 10.The refrigerator according to claim 5 or 7, wherein, The cover plate is provided with a first structure and a first limiting structure, and the first structure is rotationally connected with the base; The first limiting structure comprises a first limiting part, a second limiting part, a third limiting part and a fourth limiting part connected in sequence, the distance between the outer wall of the first limiting part and the axis of the first structure is smaller than the distance between the outer wall of the second limiting part and the axis of the first structure, the distance between the outer wall of the third limiting part and the axis of the first structure is smaller than the distance between the outer wall of the second limiting part and the axis of the first structure, and the distance between the outer wall of the fourth limiting part and the axis of the first structure is greater than the distance between the outer wall of the third limiting part and the axis of the first structure; The base is provided with an elastic limiting structure matched with the second limiting part; When the cover closes the placing opening, the elastic limiting structure abuts against the third limiting part, and when the cover opens the placing opening, the elastic limiting structure abuts against the first limiting part.

11. The refrigerator according to claim 5 or 7, wherein, Further comprising at least two connecting pieces; The at least two connecting pieces are arranged at intervals and are detachably connected with the base; The cover is a metal cover, and the cover is rotatably connected with the connecting pieces.

12. The refrigerator according to claim 5 or 7, wherein, The vacuumizing device comprises a joint assembly arranged on the base, and the joint assembly is in communication with the vacuum cavity when the joint assembly is in communication with the vacuum tank. 13.The refrigerator of claim 12, wherein, The joint assembly comprises: A first connecting pipe in communication with the vacuum cavity; A joint valve embedded on the base and connected with the first connecting pipe; A joint in communication with the vacuum tank; When the joint is connected with the joint valve, the joint is in communication with the first connecting pipe through the joint valve; When the joint is not connected with the joint valve, the first connecting pipe is not in communication with the outside of the vacuum cavity through the joint valve. 14.The refrigerator according to claim 13, wherein, The joint valve comprises: A valve body embedded on the base, and the first connecting pipe is connected with the valve body; A valve core located in the valve body and slidably connected with the valve core; A first valve inner piece located in the valve body, one end of the first valve inner piece along the force direction is connected with the valve body, and the other end is connected with the valve core; When the joint is inserted into the valve body, the valve core is separated from the valve body, and the joint is in communication with the first connecting pipe through the valve body. 15.A control method of a refrigerator, wherein, The refrigerator comprises a cabinet, The cabinet is configured with a refrigeration compartment; A door body connected with the cabinet and configured to open or close the refrigeration compartment; A drawer assembly located in the refrigeration compartment; A vacuumizing device located in the refrigeration compartment and used for vacuumizing an object to be vacuumized; A vacuum pneumatic assembly configured to generate negative pressure in the drawer assembly; A support structure located between the drawer assembly and the door body; The vacuumizing device comprises: A base covering the top of the drawer assembly, the base is configured with a vacuum cavity, and the base is configured with a placing opening in communication with the vacuum cavity; A cover plate, the cover plate being movably connected with the base, the cover plate being configured to open or close the placing opening; A pressing rod, the pressing rod being movably connected with the cover plate, the pressing rod being configured to apply pressure to the cover plate or stop applying pressure to the cover plate; The control method comprises: detecting whether the door body is closed; if the door body is closed, the vacuum pneumatic assembly communicates with the drawer assembly; detecting a first pressure value in the drawer assembly; comparing the first pressure value with a first preset value; if the first pressure value is greater than the first preset value, the vacuuming part of the vacuum pneumatic assembly starts to operate. The control method further comprises if the door body is opened, the vacuum pneumatic assembly communicates with the vacuuming device; 16.The control method of a refrigerator according to claim 15, wherein, when the detection switch detects that the pressing rod does not apply pressure to the cover plate, a first time is obtained; when the detection switch detects that the pressing rod applies pressure to the cover plate, a second time is obtained; the time interval between the first time and the second time is obtained; if the time interval is greater than a first preset time and less than a second preset time, the vacuum pneumatic assembly starts to operate. When the detection switch detects that the pressing rod does not apply pressure to the cover plate, the first time is obtained, comprising: 17.The control method of a refrigerator according to claim 16, wherein, when the detection switch is stopped, the first time is obtained; When the detection switch detects that the pressing rod applies pressure to the cover plate, the second time is obtained, comprising: when the detection switch is triggered, the second time is obtained. The refrigerator further comprises an alarm device; 18.The control method of a refrigerator according to claim 17, wherein, if the time interval is not greater than the first preset time, the alarm device issues an alarm. The refrigerator further comprises a control button, the control button being configured to control the operation of the vacuum pneumatic assembly; 19.The control method of a refrigerator according to claim 18, wherein, if the time interval is not less than the second preset time, the alarm device issues an alarm, and then further comprising: a first control instruction is received through the control button; the vacuum pneumatic assembly starts to operate. The refrigerator further comprises a pressure detection device and an alarm device; 20.The control method of a refrigerator according to any one of claims 15 to 17, wherein, after the vacuum pneumatic assembly starts to operate, further comprising: a second pressure value of the vacuum cavity is detected through the pressure detection device; after the vacuum pneumatic assembly operates for a third preset time, the second pressure value is compared with a second preset value; if the second pressure value is not less than the second preset value, the alarm device issues an alarm. The refrigerator comprises a cabinet, 21. A control method of a refrigerator, wherein, the cabinet is configured with a refrigeration compartment; a door body, the door body being connected with the cabinet, the door body being configured to open or close the refrigeration compartment; a drawer assembly, the drawer assembly being located in the refrigeration compartment; a vacuuming device, the vacuuming device being located in the refrigeration compartment, the vacuuming device being used for vacuuming the to-be-vacuumed object; a vacuum pneumatic assembly, the vacuum pneumatic assembly being configured to generate negative pressure in the drawer assembly; a support structure, the support structure being located between the drawer assembly and the door body; wherein the vacuuming device comprises: a base, the base being covered on the top of the drawer assembly, the base being configured with a vacuum cavity, the base being configured with a placing opening, the placing opening communicating with the vacuum cavity; ​ A cover plate movably connected with the base, configured to open or close the placing opening; A pressing rod movably connected with the cover plate, configured to apply pressure to the cover plate or stop applying pressure to the cover plate, The control method comprises: receiving a vacuumizing instruction; the vacuumizing part of the vacuum device operates; detecting the pressure value of the vacuum cavity of the vacuum device; determining whether the pressure value is less than a preset value; if the pressure value is less than the preset value, the vacuumizing part stops operating, and the heating part of the vacuum device starts operating; if the pressure value is not less than the preset value, the vacuumizing part of the vacuum device operates for a preset time, and the alarm device issues an alarm. 22.The control method of a refrigerator according to claim 21, wherein, Before detecting the pressure of the vacuum cavity of the vacuum device, the control method further comprises: detecting whether a vacuum tank is connected; if the pressure value is less than the preset value, the vacuumizing part stops operating, and the heating part of the vacuum device starts operating; if the pressure value is not less than the preset value, the vacuumizing part of the vacuum device operates for a preset time, and the alarm device issues an alarm, comprising: if not, detecting a first pressure value of the vacuum cavity of the vacuum device, determining whether the first pressure value is less than a first preset value; if the first pressure value is less than the first preset value, the vacuumizing part stops operating, and the heating part of the vacuum device starts operating; if the first pressure value is not less than the first preset value, the vacuumizing part operates for a first preset time, and the alarm device issues a first alarm; if yes, detecting a second pressure value of the vacuum cavity of the vacuum device, determining whether the second pressure value is less than a second preset value; if the second pressure value is less than the second preset value, the vacuumizing part stops operating; if the second pressure value is not less than the second preset value, the vacuumizing part operates for a second preset time, and the alarm device issues a second alarm.

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