Refrigerator and control method thereof

Abstract

The invention discloses a refrigerator and a control method of the refrigerator, belongs to the technical field of refrigeration equipment, and aims to solve the technical problem that related refrigerators with a vacuum fresh-keeping function are high in noise. According to the refrigerator, when the number of the fresh-keeping cavities with the air pressure larger than the first preset air pressure is larger than or equal to two, the air exhaust devices corresponding to the fresh-keeping cavities with the air pressure larger than the first preset air pressure are controlled to operate at the first preset power, and the first preset power is smaller than the second preset power; and noise generated when the refrigerator works is reduced. The air exhaust devices corresponding to the fresh-keeping chambers with the air pressure smaller than or equal to the first preset air pressure and larger than the second preset air pressure are controlled to operate at second preset power in sequence and stop working when the air pressure of the fresh-keeping chambers is smaller than or equal to the second preset air pressure, and the number of the air exhaust devices operating at the second preset power is at most one; compared with the mode that the multiple air exhaust devices operate at the second preset power at the same time, the noise generated when the refrigerator works is lowered.

Description

Technical Field

[0001] The present application relates to the technical field of refrigeration equipment, and in particular to a refrigerator and a refrigerator control method. Background Art

[0002] A vacuum refrigerator uses vacuum technology to improve food storage conditions. Compared to traditional refrigerators, vacuum refrigerators reduce air pressure in certain storage areas, thereby reducing oxygen content. This low-oxygen environment helps slow the oxidation process of food, slowing the growth of bacteria and mold, and thus extending the shelf life of food.

[0003] In related art, vacuum refrigerators feature a fresh-keeping drawer within the refrigerator. A vacuum pump draws air from the drawer, creating a vacuum or low-pressure environment, thereby reducing the oxygen content within the drawer. When multiple fresh-keeping drawers are installed within the refrigerator, each drawer is evacuated by a corresponding vacuum pump. The simultaneous operation of multiple vacuum pumps can increase the operating noise of the refrigerator. Summary of the Invention

[0004] The embodiments of the present application provide a refrigerator and a refrigerator control method, which can solve the technical problem of high noise in refrigerators with vacuum preservation functions in the related art.

[0005] In a first aspect, an embodiment of the present application provides a refrigerator, comprising:

[0006] A box body, defining a storage compartment;

[0007] At least two fresh-keeping components are arranged in the storage room, and the fresh-keeping components include:

[0008] a housing defining a fresh-keeping chamber;

[0009] A drawer is pullable and arranged in the fresh-keeping chamber. When the drawer is in a pushed-in state, the drawer closes the fresh-keeping chamber.

[0010] An air extraction device, used for extracting air from the fresh-keeping chamber;

[0011] An air pressure detection device, used to detect the air pressure in the fresh-keeping chamber;

[0012] The control device is electrically connected to the air extraction device and the air pressure detection device, and is configured to:

[0013] When the number of fresh-keeping chambers with air pressure greater than the first preset air pressure is greater than or equal to two, the exhaust devices corresponding to the fresh-keeping chambers with air pressure greater than the first preset air pressure are controlled to operate at the first preset power;

[0014] When the air pressure in the fresh-keeping chamber is less than or equal to the first preset air pressure and greater than the second preset air pressure, the air extraction device corresponding to the fresh-keeping chamber whose air pressure is less than or equal to the first preset air pressure and greater than the second preset air pressure stops working;

[0015] When the number of fresh-keeping chambers with air pressure greater than the first preset air pressure is one, the exhaust device corresponding to the fresh-keeping chamber with air pressure greater than the first preset air pressure is controlled to operate at a second preset power, and stops operating when the air pressure of the fresh-keeping chamber with air pressure greater than the first preset air pressure is less than or equal to the second preset air pressure;

[0016] The exhaust devices corresponding to the fresh-keeping chambers whose air pressure is controlled to be less than or equal to the first preset air pressure and greater than the second preset air pressure are operated in sequence at the second preset power, and stop working when the air pressure in the fresh-keeping chamber is less than or equal to the second preset air pressure;

[0017] The second preset air pressure is lower than the first preset air pressure, and both the first preset air pressure and the second preset air pressure are lower than the standard atmospheric pressure; and the second preset power is higher than the first preset power.

[0018] In an embodiment of the present application, when the number of fresh-keeping chambers with air pressure greater than the first preset air pressure is greater than or equal to two, the exhaust devices corresponding to the fresh-keeping chambers with air pressure greater than the first preset air pressure are controlled to operate at the first preset power, thereby reducing the noise during operation of the refrigerator. After at least two exhaust devices have been operated at a first preset power for a period of time, if the air pressure in some fresh-keeping chambers is below the first preset pressure, it indicates that these fresh-keeping chambers have achieved the low-pressure fresh-keeping function, and the exhaust devices corresponding to these fresh-keeping chambers are controlled to stop operating. When the number of fresh-keeping chambers with air pressure greater than the first preset pressure is one, the exhaust devices corresponding to the fresh-keeping chambers with air pressure greater than the first preset pressure are controlled to operate at a second preset power until the air pressure in the fresh-keeping chambers reaches the second preset pressure. When the second preset pressure is less than the first preset pressure, it indicates that these fresh-keeping chambers have achieved a better low-pressure fresh-keeping function and can maintain the low-pressure state for a longer period of time. At this time, the exhaust devices are controlled to stop operating, and the exhaust devices corresponding to the fresh-keeping chambers with air pressure between the first preset pressure and the second preset pressure are controlled to operate at the second preset power in turn until the air pressure in the fresh-keeping chambers reaches the second preset pressure, and then stop operating. During the entire control process, when multiple exhaust devices are required to operate simultaneously, the multiple exhaust devices are all operated at the first preset power to reduce noise when the multiple exhaust devices are operated simultaneously at the second preset power. The number of exhaust devices operating at the second preset power is at most one, which reduces the noise of the refrigerator during operation compared to multiple exhaust devices operating at the second preset power at the same time.

[0019] In some embodiments of the present application, the control device is configured to:

[0020] When the air pressure in some fresh-keeping chambers is greater than the second preset air pressure and less than or equal to the first preset air pressure, the exhaust devices corresponding to the fresh-keeping chambers whose air pressure is greater than the second preset air pressure and less than or equal to the first preset air pressure are controlled to operate at the second preset power in sequence, and stop working when the air pressure in the fresh-keeping chamber is less than or equal to the second preset air pressure.

[0021] With such an arrangement, the number of exhaust devices operating at the second preset power is at most one, which reduces the noise of the refrigerator during operation compared to multiple exhaust devices operating at the second preset power at the same time.

[0022] In some embodiments of the present application, the fresh-keeping component further includes:

[0023] A drawer state detection device is used to detect the open and close state of the drawer; wherein the open and close state of the drawer includes a pushed state and a pulled state;

[0024] When the drawer is in the pushed-in state, the air extraction device extracts the air in the fresh-keeping chamber;

[0025] The air pressure detection device detects the air pressure in the fresh-keeping chamber when the drawer is in the pushed-in state.

[0026] With this arrangement, the drawer state detection device can detect the open / close state of the drawer, thereby determining the current state of the drawer and the state change process.

[0027] In some embodiments of the present application, the control device is further electrically connected to the drawer state detection device, and the control device is configured to:

[0028] When some drawers are switched from the pushed-in state to the pulled-out state and then switched back to the pushed-in state, if the air pressure in at least one of the fresh-keeping chambers where the remaining drawers are located is greater than the first preset air pressure, the air extraction devices corresponding to the fresh-keeping chambers with air pressure greater than the first preset air pressure are controlled to operate at the second preset power in sequence, and stop operating when the air pressure in the fresh-keeping chamber is less than or equal to the first preset air pressure and greater than the second preset air pressure;

[0029] The air extraction device corresponding to the drawer that switches from the pushed-in state to the pulled-out state and then switches back to the pushed-in state is controlled to operate at a second preset power, and stops working when the air pressure in the fresh-keeping chamber is less than or equal to the second preset air pressure;

[0030] The exhaust devices corresponding to the fresh-keeping chambers whose air pressure is controlled to be less than or equal to the first preset pressure and greater than the second preset pressure are operated in sequence at the second preset power, and stop working when the air pressure in the fresh-keeping chamber is less than or equal to the second preset pressure.

[0031] With this arrangement, the fresh-keeping chambers corresponding to the unopened drawers are first enabled to maintain a low-pressure fresh-keeping function, the air pressure in the fresh-keeping chambers corresponding to the drawn drawers is then adjusted to the second preset pressure, and the air pressure in the fresh-keeping chambers corresponding to the unopened drawers is then adjusted back to the second preset pressure. During the entire control process of this embodiment, although the exhaust device operating at the second preset power is switched, the maximum number of exhaust devices operating at the second preset power is one. This reduces noise during refrigerator operation compared to multiple exhaust devices operating simultaneously at the second preset power.

[0032] In some embodiments of the present application, the refrigerator further includes a communication device, and the communication device includes:

[0033] At least two communicating tubes, each corresponding to the fresh-keeping chamber, one end of each communicating tube being connected to the housing and communicating with the fresh-keeping chamber;

[0034] The control valves are respectively connected to one end of the connecting pipe away from the fresh-keeping chamber. When the control valves are opened, at least two fresh-keeping chambers are connected through the connecting pipe.

[0035] With such arrangement, at least two communicating tubes are connected to the control valve at one end facing away from the shell. When the control valve is opened, at least two fresh-keeping chambers are connected via the communicating tube.

[0036] In some embodiments of the present application, the control device is further electrically connected to the drawer state detection device and the control valve, and the control device is configured as follows:

[0037] When some drawers are switched from the push-in state to the withdrawn state and then switched back to the push-in state again, the control valve is opened;

[0038] When the air pressure in some fresh-keeping chambers is greater than the first preset air pressure, the exhaust devices corresponding to the fresh-keeping chambers with air pressure greater than the first preset air pressure are controlled to operate at the second preset power in sequence, and stop working when the air pressure in the fresh-keeping chamber is less than or equal to the second preset air pressure.

[0039] With this arrangement, after the control valve is opened, part of the gas in the fresh-keeping chamber where the drawn drawer is located enters the fresh-keeping chamber where the undrawn drawer is located, which can quickly reduce the air pressure in the fresh-keeping chamber where the drawn drawer is located, thereby reducing the oxygen content in the fresh-keeping chamber, which is beneficial to slowing down the oxidation rate of food in the fresh-keeping chamber.

[0040] When there are at least two fresh-keeping chambers with air pressures greater than the first preset pressure, the exhaust devices corresponding to the fresh-keeping chambers with air pressures greater than the first preset pressure can be controlled to operate at the second preset power according to the difference between the air pressure in the fresh-keeping chamber and the first preset pressure, in descending order of the difference. When the air pressure in the fresh-keeping chamber is less than or equal to the first preset pressure and greater than the second preset pressure, the exhaust devices stop operating. At this time, the air pressure in the fresh-keeping chamber is below the first preset pressure, creating a low-oxygen environment that is conducive to delaying food oxidation. Although the exhaust devices operating at the second preset power will be switched, the maximum number of exhaust devices operating at the second preset power is one. Compared with multiple exhaust devices operating at the second preset power at the same time, the noise during refrigerator operation is reduced.

[0041] In some embodiments of the present application, the fresh-keeping component further includes a temperature detection device, which is used to detect the temperature in the fresh-keeping chamber;

[0042] The refrigerator further comprises a cold transport device for transporting cold air to the fresh-keeping chamber and the storage chamber respectively;

[0043] The control device is also electrically connected to the control valve, the temperature detection device and the cold delivery device. The control device is configured as follows:

[0044] When the target fresh-keeping temperature of at least part of the fresh-keeping chamber is switched from the second fresh-keeping temperature to the first fresh-keeping temperature, the cold transport device is controlled to increase the cold transported to the fresh-keeping chamber and the storage chamber;

[0045] The target fresh-keeping temperature includes a first fresh-keeping temperature and a second fresh-keeping temperature, and the first fresh-keeping temperature is lower than the second fresh-keeping temperature.

[0046] In this way, when the preservation temperature of at least part of the preservation chamber is switched from the second preservation temperature to the first preservation temperature, it indicates that the preservation target temperature of the preservation chamber is the first preservation temperature, and the actual temperature in the preservation chamber is greater than the first preservation temperature. At this time, the cold transport device is controlled to increase the cold transported to the preservation chamber, for example, the opening of the second air volume regulating valve is controlled to increase, and the air volume transported from the evaporator bin to the preservation chamber is increased, so as to transport cold adapted to the first preservation temperature to the preservation chamber, so that the temperature in the preservation chamber can be quickly reduced to the first preservation temperature.

[0047] In addition to controlling the cold transport device to increase the cold transported to the fresh-keeping chamber, the cold transport device is also controlled to increase the cold transported to the storage chamber. For example, the opening of the first air volume regulating valve is controlled to increase, thereby increasing the air volume transported from the evaporator compartment to the refrigerated chamber, thereby transporting cold adapted to the first storage temperature to the storage chamber, thereby rapidly lowering the temperature within the storage chamber to the first storage temperature. Since the fresh-keeping assembly is disposed within the storage chamber, the cold within the storage chamber can indirectly lower the temperature within the fresh-keeping chamber via the outer shell of the fresh-keeping assembly and the front wall of the drawer. By lowering the temperature of the storage chamber, the temperature within the fresh-keeping chamber can be further lowered, thereby rapidly lowering the temperature within the fresh-keeping chamber to the first fresh-keeping temperature.

[0048] In some embodiments of the present application, the control device is further configured to:

[0049] When the target temperature of a part of the fresh-keeping chambers is set to the first fresh-keeping temperature and maintained for a preset time, and the target temperature of another part of the fresh-keeping chambers is switched from the second fresh-keeping temperature to the first fresh-keeping temperature, the control valve is controlled to open, and the exhaust device corresponding to the fresh-keeping chamber that is switched from the second fresh-keeping temperature to the first fresh-keeping temperature is controlled to operate.

[0050] With this arrangement, the fresh-keeping chamber whose target temperature is the first fresh-keeping temperature and is maintained for a preset time is called the first part of the fresh-keeping chamber; the fresh-keeping chamber whose target temperature is switched from the second fresh-keeping temperature to the first fresh-keeping temperature is called the second part of the fresh-keeping chamber.

[0051] Since the target temperature of the first fresh-keeping chamber is set to the first fresh-keeping temperature and maintained for a preset time, the actual temperature in the first fresh-keeping chamber is lower than the second fresh-keeping temperature and greater than or equal to the first fresh-keeping temperature.

[0052] The target fresh-keeping temperature of the second fresh-keeping chamber is switched from the second fresh-keeping temperature to the first fresh-keeping temperature, indicating that the target fresh-keeping temperature of the second fresh-keeping chamber is the first fresh-keeping temperature and the actual temperature in the fresh-keeping chamber is greater than the first fresh-keeping temperature. At this time, the control valve is opened and the exhaust device corresponding to the second fresh-keeping chamber is controlled to operate to draw the cold air in the first fresh-keeping chamber into the second fresh-keeping chamber, so that the temperature in the second fresh-keeping chamber can be quickly reduced.

[0053] In some embodiments of the present application, the refrigerator further includes:

[0054] The door body is rotatably arranged relative to the box body to open or close the storage chamber;

[0055] A door state detection device is used to detect the switch state of the door, which includes an open state and a closed state;

[0056] The control device is also electrically connected to the door state detection device, and the control device is configured to:

[0057] When the door is in the open state, all exhaust devices are controlled to stop working;

[0058] When the door body switches from an open state to a closed state, the air extraction device is controlled to operate at the power before the operation is suspended.

[0059] With such a setting, since the door body has a certain sound insulation effect when it is in the closed state, it has no sound insulation effect when it is in the open state. If the exhaust device is running, the noise of the refrigerator felt by the user will increase. Therefore, controlling all the exhaust devices to suspend work at this time can reduce the noise of the refrigerator felt by the user.

[0060] When the door body switches from an open state to a closed state, the door body is in a closed state at this time, and the door body has a certain sound insulation effect. The exhaust device is controlled to operate at the power before suspending work, thereby continuing to exhaust the fresh-keeping chamber.

[0061] In a second aspect, an embodiment of the present application provides a method for controlling a refrigerator, the refrigerator comprising:

[0062] A box body, defining a storage compartment;

[0063] At least two fresh-keeping components are arranged in the storage room, and the fresh-keeping components include:

[0064] a housing defining a fresh-keeping chamber;

[0065] A drawer is pullable and arranged in the fresh-keeping chamber. When the drawer is in a pushed-in state, the drawer closes the fresh-keeping chamber.

[0066] An air extraction device, used for extracting air from the fresh-keeping chamber;

[0067] An air pressure detection device, used to detect the air pressure in the fresh-keeping chamber;

[0068] Control methods include:

[0069] When the number of fresh-keeping chambers with air pressure greater than the first preset air pressure is greater than or equal to two, the exhaust devices corresponding to the fresh-keeping chambers with air pressure greater than the first preset air pressure are controlled to operate at the first preset power;

[0070] When the air pressure in the fresh-keeping chamber is less than or equal to the first preset air pressure and greater than the second preset air pressure, the air extraction device corresponding to the fresh-keeping chamber whose air pressure is less than or equal to the first preset air pressure and greater than the second preset air pressure stops working;

[0071] When the number of fresh-keeping chambers with air pressure greater than the first preset air pressure is one, the exhaust device corresponding to the fresh-keeping chamber with air pressure greater than the first preset air pressure is controlled to operate at a second preset power, and stops operating when the air pressure of the fresh-keeping chamber with air pressure greater than the first preset air pressure is less than or equal to the second preset air pressure;

[0072] The exhaust devices corresponding to the fresh-keeping chambers whose air pressure is controlled to be less than or equal to the first preset air pressure and greater than the second preset air pressure are operated in sequence at the second preset power, and stop working when the air pressure in the fresh-keeping chamber is less than or equal to the second preset air pressure;

[0073] The second preset air pressure is lower than the first preset air pressure, and both the first preset air pressure and the second preset air pressure are lower than the standard atmospheric pressure; and the second preset power is higher than the first preset power.

[0074] In the refrigerator of the embodiment of the present application, when the number of fresh-keeping chambers with air pressure greater than the first preset air pressure is greater than or equal to two, the exhaust devices corresponding to the fresh-keeping chambers with air pressure greater than the first preset air pressure are controlled to operate at the first preset power, thereby reducing the noise during operation of the refrigerator. After at least two exhaust devices have been running at the first preset power for a period of time, when the air pressure in some fresh-keeping chambers is below the first preset pressure, it indicates that this part of the fresh-keeping chamber has already had a low-pressure fresh-keeping function, and the exhaust devices corresponding to this part of the fresh-keeping chamber are controlled to stop working; when the number of fresh-keeping chambers with air pressure greater than the first preset pressure is one, the exhaust devices corresponding to the fresh-keeping chambers with air pressure greater than the first preset pressure are controlled to run at the second preset power until the air pressure in the fresh-keeping chamber reaches the second preset pressure. When the second preset pressure is lower than the first preset pressure, it indicates that this part of the fresh-keeping chamber has already had a better low-pressure fresh-keeping function and can maintain the low-pressure state for a longer time. At this time, the exhaust device is controlled to stop working, and the exhaust devices corresponding to the fresh-keeping chambers with air pressure between the first preset pressure and the second preset pressure are controlled to run at the second preset power in turn until the air pressure in the fresh-keeping chamber reaches the second preset pressure, and then stop working. During the entire control process, when multiple exhaust devices are required to work simultaneously, the multiple exhaust devices all operate at the first preset power, and the exhaust devices do not operate at the second preset power at the same time, so as to reduce the noise when multiple exhaust devices operate at the second preset power at the same time.

[0075] In a third aspect, the present application provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a computer, they are used to implement the control method of the second aspect.

[0076] The computer-readable storage medium provided in the embodiment of the present application can execute the technical solutions in the above method embodiments, and its beneficial effects are similar and will not be repeated here.

[0077] In a fourth aspect, the present application provides a computer program product, including a computer program, which is used to implement the control method of the second aspect when executed by a computer.

[0078] The computer program product provided in the embodiment of the present application can execute the technical solutions in the above method embodiments, and its beneficial effects are similar, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0079] In order to more clearly illustrate the implementation methods in the embodiments of the present application or related technologies, the following is a brief introduction to the drawings required for use in the embodiments or related technology descriptions. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0080] Figure 1 A schematic structural diagram of a refrigerator according to an embodiment of the present application is shown;

[0081] Figure 2 Shown Figure 1 Schematic diagram of the fresh-keeping components and connecting device structure of the refrigerator;

[0082] Figure 3 A schematic diagram showing the control relationship of a control device in a refrigerator according to an embodiment of the present application is shown;

[0083] Figure 4 The schematic diagram of the process of a refrigerator control method provided by the embodiment of the present application is shown Figure 1 ;

[0084] Figure 5 The schematic diagram of the process of a refrigerator control method provided by the embodiment of the present application is shown Figure 2 ;

[0085] Figure 6 The schematic diagram of the process of a refrigerator control method provided by the embodiment of the present application is shown Figure 3 ;

[0086] Figure 7 The schematic diagram of the process of a refrigerator control method provided by the embodiment of the present application is shown Figure 4 ;

[0087] Figure 8 The schematic diagram of the process of a refrigerator control method provided by the embodiment of the present application is shown Figure 5 ;

[0088] Figure 9 The schematic diagram of the process of a refrigerator control method provided by the embodiment of the present application is shown Figure 6 ;

[0089] Figure 10The schematic diagram of the process of a refrigerator control method provided by the embodiment of the present application is shown Figure 7 ;

[0090] Figure 11 The schematic diagram of the process of a refrigerator control method provided by the embodiment of the present application is shown Figure 8 ;

[0091] Figure 12 The schematic diagram of the process of a refrigerator control method provided by the embodiment of the present application is shown Figure 9 .

[0092] Description of reference numerals:

[0093] 100-cabinet;

[0094] 110- box; 111- storage room;

[0095] 112- access opening; 120- box shell;

[0096] 101-anterior wall;

[0097] 200-door body;

[0098] 210-door rear wall;

[0099] 300-door status detection device;

[0100] 400-cold delivery device;

[0101] 500-Freshness preservation component;

[0102] 510-housing; 511-preservation chamber;

[0103] 512-pull-out opening; 513-bent edge;

[0104] 520-drawer;

[0105] 521-Drawer body; 522-Drawer panel;

[0106] 523- placement cavity; 524- placement opening;

[0107] 530-exhaust device;

[0108] 531-exhaust body; 532-intake pipe;

[0109] 540-air pressure detection device;

[0110] 550-Drawer status detection device;

[0111] 560-temperature detection device;

[0112] 600-connection device;

[0113] 610-connecting pipe; 620-control valve;

[0114] 700-Control device. DETAILED DESCRIPTION

[0115] In order to make the purpose and implementation of this application clearer, the exemplary implementation of this application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of this application. Obviously, the described exemplary embodiments are only part of the embodiments of this application, not all of the embodiments.

[0116] It should be noted that the brief descriptions of terms in this application are only for the purpose of facilitating the understanding of the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their ordinary and usual meanings.

[0117] In the specification and claims of this application and the accompanying drawings, the terms "first," "second," "third," etc. are used to distinguish similar or similar objects or entities, and are not necessarily intended to limit a particular order or sequence, unless otherwise noted. It should be understood that the terms used in this manner are interchangeable under appropriate circumstances.

[0118] The terms "comprise," "include," and "have," and any variations thereof, are intended to cover but not exclude inclusion; for example, a product or device comprising a list of components is not necessarily limited to all the components expressly listed but may include other components not expressly listed or inherent to such product or device.

[0119] With respect to the refrigerator in the related art, when multiple fresh-keeping drawers are provided in the cabinet, each fresh-keeping drawer is evacuated by a corresponding vacuum pump respectively, and multiple vacuum pumps work simultaneously, resulting in a technical problem of increased operating noise of the refrigerator. The embodiment of the present application provides a refrigerator and a control method for the refrigerator. When the number of fresh-keeping chambers with an air pressure greater than a first preset air pressure is greater than or equal to two, the exhaust devices corresponding to the fresh-keeping chambers with an air pressure greater than the first preset air pressure are controlled to operate at a first preset power, thereby reducing the noise during operation of the refrigerator. After at least two exhaust devices have been running at the first preset power for a period of time, when the air pressure in some fresh-keeping chambers is below the first preset pressure, it indicates that this part of the fresh-keeping chamber has already had a low-pressure fresh-keeping function, and the exhaust devices corresponding to this part of the fresh-keeping chamber are controlled to stop working; when the number of fresh-keeping chambers with air pressure greater than the first preset pressure is one, the exhaust devices corresponding to the fresh-keeping chambers with air pressure greater than the first preset pressure are controlled to run at the second preset power until the air pressure in the fresh-keeping chamber reaches the second preset pressure. When the second preset pressure is lower than the first preset pressure, it indicates that this part of the fresh-keeping chamber has already had a better low-pressure fresh-keeping function and can maintain the low-pressure state for a longer time. At this time, the exhaust device is controlled to stop working, and the exhaust devices corresponding to the fresh-keeping chambers with air pressure between the first preset pressure and the second preset pressure are controlled to run at the second preset power in turn until the air pressure in the fresh-keeping chamber reaches the second preset pressure, and then stop working. During the entire control process, when multiple exhaust devices are required to work simultaneously, the multiple exhaust devices all operate at the first preset power, and the exhaust devices do not operate at the second preset power at the same time, so as to reduce the noise when multiple exhaust devices operate at the second preset power at the same time.

[0120] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0121] It should be noted that the "front side" in the embodiments of the present application refers to the side of the refrigerator facing the user when the refrigerator is in normal use. The "rear side" refers to the side opposite to the front side, that is, the side facing away from the user when the refrigerator is in normal use.

[0122] refer to Figure 1 The refrigerator provided in an embodiment of the present application may include a cabinet 100 having a storage chamber 111, a door 200 connected to the cabinet 100 to open and close the storage chamber 111, and a refrigeration device that provides cold air to the storage chamber 111.

[0123] A refrigeration device may be provided in the housing 100. The refrigeration device may be a refrigeration device known in the related art. The refrigeration device is used to provide cold air to the storage chamber 111 to reduce the temperature in the storage chamber 111.

[0124] refer to Figure 1 The box body 100 may include a box liner 110, and a storage chamber 111 may be formed in the box liner 110. A take-out opening 112 may be formed on the front side of the storage chamber 111, and a user may take items from the storage chamber 111 through the take-out opening 112, or place items into the storage chamber 111 through the take-out opening 112.

[0125] It is understandable that the number of the storage chambers 111 may be one, two, or more than three. The storage chamber 111 may be configured as a refrigeration chamber, a freezing chamber, or a temperature-changing chamber with varying internal temperatures.

[0126] refer to Figure 1 The box body 100 may further include a box shell 120. The box shell 120 is connected to the outer side of the box liner 110 to form the appearance of the box body 100.

[0127] In some possible implementations of the embodiments of the present application, the door body 200 can be rotatably connected to the box body 100 to open and close the access opening 112 of the storage chamber 111.

[0128] The opening and closing states of the door body 200 may include an open state and a closed state.

[0129] When the door 200 is in the open state (refer to Figure 1 ), the door body 200 opens the access opening 112, and the user can take items from the storage chamber 111 or place items into the storage chamber 111 through the access opening 112.

[0130] When the door body 200 is in the closed state, the door body 200 closes the access opening 112 to reduce the leakage of cold air in the storage chamber 111 from the access opening 112, thereby improving the refrigeration effect of the refrigerator on the items in the storage chamber 111.

[0131] At least one door 200 may be correspondingly provided for each storage chamber 111 .

[0132] Understandably, the reference Figure 1 Each storage room 111 may also be provided with two door bodies 200 with two opening doors, which will not be described in detail in the embodiment of the present application.

[0133] refer to Figure 1The door body 200 may include a rear wall 210. When the door body 200 is in the closed state, the rear wall 210 may be located at the rear side of the door body 200. It should be noted that the rear wall 210 is not an absolutely flat surface. A door seal may be provided on the rear wall 210 to improve sealing, and storage space, such as a storage box or an ice maker, may also be provided. It is understood that when the door body 200 is in the closed state, a portion of the rear wall 210 corresponds to the access opening 112, and another portion of the rear wall 210 corresponds to the front wall 101 of the box. At least a portion of the perimeter of the rear wall 210 cooperates with the front wall 101 of the box body 100 to form a relatively enclosed space in the storage chamber 111.

[0134] In some possible implementations of the present application, reference is made to Figure 1 and Figure 3 The refrigerator may further include a door state detection device 300. The door state detection device 300 is used to detect the open and close state of the door 200.

[0135] In some possible embodiments, referring to FIG, the door state detection device 300 may include a micro switch. The micro switch may be provided on the door rear wall 210 for cooperating with the front wall 101 of the box body 100, and the open / close state of the door 200 may be detected by the micro switch.

[0136] When the door body 200 is in a closed state, the micro switch is pressed by the front wall 101 of the box body 100, and the circuit corresponding to the micro switch is disconnected.

[0137] When the door body 200 is in the open state, the micro switch is separated from the front wall 101 of the box body 100, and the circuit corresponding to the micro switch is closed.

[0138] In other possible embodiments, the door state detection device 300 may include a distance sensor. The distance sensor may be disposed on the front wall 101 of the box 100 and is used to detect the distance between the door rear wall 210 and the front wall 101 of the box 100, thereby determining the open / close state of the door 200.

[0139] When the door 200 is closed, the distance between the door rear wall 210 and the front wall 101 of the cabinet 100, as detected by the distance sensor, is a first distance. When the door 200 is open, the distance between the door rear wall 210 and the front wall 101 of the cabinet 100, as detected by the distance sensor, is a second distance. The second distance can be any value within a range, and the second distance is greater than the first distance. The open / close state of the door 200 can be determined based on the distance between the door rear wall 210 and the front wall 101 of the cabinet 100, as detected by the distance sensor.

[0140] In some possible implementations of the present application, reference is made to Figure 3The refrigerator may further include a cold transport device 400 , which may be an air duct, etc. The cold transport device 400 is used to transport the cold energy of the refrigeration device to the storage chamber 111 .

[0141] For example, the refrigeration device may include an evaporator, the housing 100 may be configured with an evaporator compartment, and the evaporator may be disposed in the evaporator compartment. When the refrigeration device is operating, the evaporator absorbs heat, thereby reducing the temperature in the evaporator compartment.

[0142] The cold energy transfer device 400 is connected between the evaporator compartment and the storage chamber 111 to transfer the cold energy in the evaporator compartment to the storage chamber 111 to reduce the temperature in the storage chamber 111 .

[0143] The cold energy transport device 400 may include a first air supply duct, which is connected between the evaporator compartment and the storage chamber 111 to transport the cold energy in the evaporator compartment to the storage chamber 111 to reduce the temperature in the storage chamber 111.

[0144] The cold air delivery device 400 may also include a first air volume regulating valve, which may be arranged in the first air supply duct. The first air volume regulating valve may adjust the flow area of the first air supply duct, thereby adjusting the air volume delivered from the evaporator bin to the storage chamber 111, thereby achieving temperature adjustment of the storage chamber 111.

[0145] refer to Figure 1 The refrigerator may further include a fresh-keeping component 500, which may be disposed in the storage chamber 111. Figure 2 A fresh-keeping chamber 511 may be defined in the fresh-keeping component 500. When the fresh-keeping component 500 is working, the air pressure in the fresh-keeping chamber 511 may be reduced to below the standard atmospheric pressure, forming a low-pressure environment. This low-pressure environment may reduce the oxygen content in the fresh-keeping chamber 511, thereby delaying the oxidation process of the food in the fresh-keeping chamber 511 and the growth of bacteria and mold, thereby extending the shelf life of the food and achieving the food preservation function.

[0146] The refrigeration device lowers the temperature in the storage chamber 111. The preservation component 500 is arranged in the relatively low-temperature storage chamber 111. The coldness in the storage chamber 111 can indirectly lower the temperature in the preservation chamber 511 through the outer wall of the preservation component 500. The low-temperature environment can slow down the activity of bacteria and enzymes in the preservation chamber 511, thereby extending the shelf life of food.

[0147] In some embodiments, the cold transport device 400 can also be connected between the evaporator bin and the fresh-keeping chamber 511 to transport the cold in the evaporator bin to the fresh-keeping chamber 511 to reduce the temperature in the fresh-keeping chamber 511.

[0148] The cold transport device 400 may further include a second air supply duct, which is connected between the evaporator bin and the fresh-keeping chamber 511 to transport the cold in the evaporator bin to the fresh-keeping chamber 511 to reduce the temperature in the fresh-keeping chamber 511.

[0149] The cold air delivery device 400 may also include a second air volume regulating valve, which may be arranged in the second air supply duct. The second air volume regulating valve may adjust the flow area of the second air supply duct, thereby adjusting the air volume delivered from the evaporator bin to the fresh-keeping chamber 511, thereby realizing the adjustment of the temperature of the fresh-keeping chamber 511.

[0150] In some possible implementations of the present application, reference is made to Figure 2 The fresh-keeping component 500 may include a housing 510 .

[0151] refer to Figure 1 The housing 510 may be disposed in the storage chamber 111. The housing 510 may be configured with a fresh-keeping chamber 511, and the front portion of the fresh-keeping chamber 511 may have a pull-out opening 512.

[0152] refer to Figure 2 The front end of the housing 510 can be bent away from the drawer opening 512 to form a bent edge 513. The bent edge 513 can be provided around at least a portion of the edge of the drawer opening 512, that is, the bent edge 513 can be provided around a portion of the edge of the drawer opening 512, or the bent edge 513 can be provided around the entire circumference of the edge of the drawer opening 512.

[0153] In some possible implementations of the present application, reference is made to Figure 1 and Figure 2 The fresh-keeping component 500 may further include a drawer 520 , which is drawable in the fresh-keeping chamber 511 through a drawer opening 512 at the front of the fresh-keeping chamber 511 .

[0154] refer to Figure 2 The drawer 520 may include a drawer body 521 , which is drawable and disposed in the fresh-keeping chamber 511 , and is used for storing food.

[0155] refer to Figure 2 The drawer 520 may further include a drawer panel 522, which may be disposed at the front end of the drawer body 521. The edge of the drawer panel 522 may extend beyond the front edge of the drawer body 521, that is, the front end of the drawer body 521 is corresponding to the portion of the drawer panel 522.

[0156] The drawer panel 522 can be enclosed with the drawer body 521 to form a placement cavity 523. Alternatively, the drawer body 521 itself forms the placement cavity 523. The top of the placement cavity 523 has a placement opening 524.

[0157] The drawer 520 has a pushed-in state and a pulled-out state.

[0158] When the drawer 520 is in the pushed-in state, the drawer 520 closes the pull-out opening 512 of the fresh-keeping chamber 511, so that the fresh-keeping chamber 511 is in a sealed state. Since the placement cavity 523 is located in the fresh-keeping chamber 511, the placement cavity 523 and the fresh-keeping chamber 511 are communicated.

[0159] When the drawer 520 is in the pushed-in state, the drawer panel 522 can abut against the front end of the housing 510 to close the drawer opening 512 of the fresh-keeping chamber 511. In an embodiment in which the front end of the housing 510 is configured with a bent edge 513, the drawer panel 522 can abut against the bent edge 513 to close the drawer opening 512 of the fresh-keeping chamber 511.

[0160] refer to Figure 2 When the drawer 520 is in the pulled-out state, the drawer 520 moves toward the front of the shell 510 relative to the shell 510 and separates from the front end of the shell 510 to expose the pull-out opening 512 and the placement opening 524, so that the fresh-keeping chamber 511 and the placement chamber 523 are both in an open state.

[0161] In some possible implementations of the present application, reference is made to Figure 2 The fresh-keeping component 500 may further include an air extraction device 530. The air extraction device 530 may be an air extraction pump or a reciprocating compressor or other device that can be used to extract air.

[0162] When the drawer 520 is in the pushed-in state, the air extraction device 530 extracts the air in the fresh-keeping chamber 511 .

[0163] refer to Figure 2 The air extraction device 530 may include an air extraction body 531, an air inlet pipe 532 and an air outlet pipe.

[0164] The air extraction body 531 may have an air inlet and an air outlet that are connected to each other.

[0165] One end of the air inlet pipe 532 can be connected to the air extraction body 531, and the inner cavity of the air inlet pipe 532 is connected to the air inlet. The end of the air inlet pipe 532 away from the air extraction body 531 can be connected to the housing 510, and the inner cavity of the air inlet pipe 532 is also connected to the fresh-keeping chamber 511.

[0166] One end of the air outlet pipe can be connected to the air extraction body 531, and the inner cavity of the air outlet pipe is communicated with the air outlet.

[0167] When the air extraction device 530 is working, the air in the fresh-keeping chamber 511 enters the air extraction body 531 through the air inlet pipe 532 and is discharged through the air outlet pipe. As the air extraction device 530 continues to work, the air pressure in the fresh-keeping chamber 511 gradually decreases to below the standard atmospheric pressure, forming a low-pressure environment.

[0168] The air extraction device 530 can operate at a first preset power or a second preset power, wherein the second preset power is greater than the first preset power. The air extraction rate of the air extraction device 530 when operating at the second preset power is greater than the air extraction rate when operating at the first preset power. The noise generated by the air extraction device 530 when operating at the second preset power is greater than the noise generated when operating at the first preset power.

[0169] When the exhaust device 530 is in operation, as the operation time increases, the air in the fresh-keeping chamber 511 is gradually exhausted by the exhaust device 530 , and the air pressure in the fresh-keeping chamber 511 gradually decreases.

[0170] The air pressure in the fresh-keeping chamber 511 can first be reduced to a first preset pressure, which can be between 0.85 atm and 0.95 atm. For example, the first preset pressure can be 0.85 atm, 0.9 atm, or 0.95 atm. When the air pressure in the fresh-keeping chamber 511 is reduced to the first preset pressure, it indicates that the air pressure in the fresh-keeping chamber 511 has reached a certain low pressure state, and the oxygen in the fresh-keeping chamber 511 has been partially extracted, forming a low-oxygen environment that is conducive to delaying food oxidation.

[0171] When the air pressure in the fresh-keeping chamber 511 is greater than 0.95atm, a small amount of air or oxygen in the fresh-keeping chamber 511 is extracted, and a low-oxygen environment is not formed in the fresh-keeping chamber 511. At this time, if the exhaust device 530 stops running, the shelf life of the food in the fresh-keeping chamber 511 will be shortened.

[0172] After the air pressure in the fresh food chamber 511 reaches the first preset pressure, the air pressure in the fresh food chamber 511 will continue to decrease while the air extraction device 530 continues to operate. The air pressure in the fresh food chamber 511 can continue to decrease to a second preset pressure. The second preset pressure can be 0.7 atm-0.8 atm. For example, the second preset pressure can be 0.7 atm, 0.75 atm, or 0.8 atm. When the air pressure in the fresh food chamber 511 decreases to the second preset pressure, the air extraction device 530 can be stopped.

[0173] When the air pressure in the fresh-keeping chamber 511 drops to the second preset air pressure, it means that the air pressure in the fresh-keeping chamber 511 has reached a certain low-pressure state, and since it takes a long time for the air pressure in the fresh-keeping chamber 511 to gradually release from the second preset air pressure to the first preset air pressure at a very slow speed, when the exhaust device 530 stops running, the fresh-keeping chamber 511 can still maintain a low-pressure state for a long time.

[0174] If the air pressure in the fresh-keeping chamber 511 continues to operate after it drops to 0.7 atm, the load of the air extraction device 530 will increase, resulting in increased vibration and noise of the air extraction device 530 .

[0175] If the air pressure in the fresh-keeping chamber 511 is greater than 0.8 atm, the exhaust device 530 is stopped. Although the fresh-keeping chamber 511 can be in a low-pressure state for a short time, the air pressure in the fresh-keeping chamber 511 will soon be released to the first preset air pressure, shortening the time that the fresh-keeping chamber 511 maintains the low-pressure state.

[0176] In some possible implementations of the present application, reference is made to Figure 3 The fresh-keeping component 500 may further include an air pressure detection device 540, which may be a pressure switch or a pressure sensor. The air pressure detection device 540 may be disposed in the fresh-keeping chamber 511 and is configured to detect the air pressure in the fresh-keeping chamber 511 when the drawer 520 is in the pushed-in state.

[0177] In some possible implementations of the present application, reference is made to Figure 3 The fresh-keeping component 500 may further include a drawer state detection device 550, which is used to detect the switch state of the drawer 520. The switch state of the drawer 520 includes a pushed state and a pulled-out state.

[0178] In some possible embodiments, the drawer state detection device 550 may include a proximity switch, which may be provided on the housing 510. The proximity switch may be used to detect the relative distance between the drawer 520 and the housing 510 to determine the open / close state of the drawer 520.

[0179] In some other possible embodiments, the drawer state detection device 550 may include a magnet and a magnetic sensitive switch.

[0180] The magnet can be provided on the rear wall of the drawer 520. In the embodiment in which the drawer 520 includes a drawer body 521 and a drawer panel 522, the rear wall of the drawer 520 is the side wall of the drawer body 521 away from the drawer panel 522. The magnet is provided on the side of the rear wall away from the placement cavity 523.

[0181] A magnetic switch can be disposed on a side wall of the housing 510 opposite the drawer opening 512. When the drawer 520 is disposed within the fresh-keeping chamber 511, the magnet is disposed opposite the magnetic switch. When the drawer 520 is in the pushed-in state, the magnetic field strength of the magnet detected by the magnetic switch can be a first magnetic field strength. When the drawer 520 is in the pulled-out state, the magnetic field strength of the magnet detected by the magnetic switch can be a second magnetic field strength. The second magnetic field strength is less than the first magnetic field strength. The open / close state of the drawer 520 is determined based on the magnetic field strength detected by the magnetic switch.

[0182] In some possible implementations of the present application, reference is made to Figure 3 The fresh-keeping component 500 may further include a temperature detection device 560, which may be a temperature sensor or a thermometer, etc. The detection end of the temperature detection device 560 may be disposed in the fresh-keeping chamber 511, and the temperature detection device 560 is used to detect the temperature in the fresh-keeping chamber 511.

[0183] In some possible implementations of the embodiments of the present application, the number of the fresh-keeping components 500 may be at least two, and the number of the fresh-keeping components 500 may be two, three, or more than three.

[0184] Multiple fresh-keeping components 500 can be arranged in the same storage chamber 111 (e.g. Figure 1 As shown), multiple fresh-keeping components 500 can also be set in different storage chambers 111.

[0185] In some possible implementations of the present application, reference is made to Figure 2 , the refrigerator may further include a communication device 600 .

[0186] refer to Figure 2 The communication device 600 may include at least two communication pipes 610, and the number of the communication pipes 610 may correspond to the number of the fresh-keeping components 500. For example, in an implementation in which the number of the fresh-keeping components 500 is two, the number of the communication pipes 610 is also two.

[0187] One end of the communication tube 610 is connected to the housing 510 of the corresponding fresh-keeping assembly 500 , and the inner cavity of the communication tube 610 is in communication with the fresh-keeping chamber 511 .

[0188] refer to Figure 2 The connecting device 600 may further include a control valve 620. One end of at least two connecting pipes 610 facing away from the housing 510 is connected to the control valve 620. When the control valve 620 is opened, at least two fresh-keeping chambers 511 are connected through the connecting pipe 610.

[0189] Taking the example of two fresh-keeping assemblies 500, the at least two connecting tubes 610 may include a first connecting tube and a second connecting tube. One end of the first connecting tube and the second connecting tube are respectively connected to one housing 510, and the other ends of the first connecting tube 610 and the second connecting tube are respectively connected to a control valve 620. When the control valve 620 is open, if there is an air pressure difference between the two fresh-keeping chambers 511, the air in the one with higher air pressure will flow through the first connecting tube and the second connecting tube into the fresh-keeping chamber 511 with lower air pressure until the air pressure in the two fresh-keeping chambers 511 is substantially the same.

[0190] In some possible implementations of the present application, reference is made to Figure 3 , the refrigerator may further include a control device 700 .

[0191] The control device 700 may be electrically connected to the air extraction device 530 and the air pressure detection device 540. The control device 700 may be configured as follows:

[0192] When the number of the fresh-keeping chambers 511 with air pressure greater than the first preset air pressure is greater than or equal to two, the exhaust devices 530 corresponding to the fresh-keeping chambers 511 with air pressure greater than the first preset air pressure are all controlled to operate at the first preset power.

[0193] On the one hand, at least two fresh-keeping chambers 511 can be evacuated simultaneously to put all fresh-keeping chambers 511 into a low-pressure and low-oxygen environment as quickly as possible, thereby achieving a low-pressure fresh-keeping function.

[0194] On the other hand, the multiple exhaust devices 530 all operate at the first preset power, which can reduce the noise during the operation of the refrigerator compared to the multiple exhaust devices 530 all operate at the second preset power.

[0195] When the air pressure in the fresh-keeping chamber 511 is less than or equal to the first preset air pressure and greater than the second preset air pressure, the exhaust device 530 corresponding to the fresh-keeping chamber 511 whose air pressure is less than or equal to the first preset air pressure and greater than the second preset air pressure stops working.

[0196] After at least two exhaust devices 530 have been running at the first preset power for a period of time, when the air pressure in some fresh-keeping chambers 511 is below the first preset air pressure, it means that although this part of the fresh-keeping chamber 511 cannot maintain a low-pressure state for a long time, it already has a low-pressure fresh-keeping function. At this time, the exhaust device 530 corresponding to this part of the fresh-keeping chamber 511 is controlled to stop working.

[0197] As long as the number of the fresh-keeping chambers 511 with air pressure greater than the first preset air pressure is greater than or equal to two, the exhaust devices 530 corresponding to the fresh-keeping chambers 511 with air pressure greater than the first preset air pressure are controlled to operate at the first preset power to reduce noise.

[0198] When the number of fresh-keeping chambers 511 with air pressure greater than the first preset air pressure is one, the exhaust device 530 corresponding to the fresh-keeping chamber 511 with air pressure greater than the first preset air pressure is controlled to operate at the second preset power, and stops working when the air pressure of the fresh-keeping chamber 511 with air pressure greater than the first preset air pressure is less than or equal to the second preset air pressure.

[0199] When the number of fresh-keeping chambers 511 with an air pressure greater than the first preset air pressure is one, it means that only one fresh-keeping chamber 511 has not yet reached a low-pressure, low-oxygen environment, and the air pressures of the other fresh-keeping chambers 511 are already below the first preset air pressure, and the corresponding exhaust devices 530 have all stopped operating. At this time, the exhaust device 530 corresponding to the fresh-keeping chamber 511 with an air pressure greater than the first preset air pressure is controlled to operate at the second preset power, so that the air pressure in this fresh-keeping chamber 511 can be quickly reduced to below the first preset air pressure. At this time, the number of exhaust devices 530 operating at the second preset power is one, which reduces the noise during the operation of the refrigerator compared to multiple exhaust devices 530 operating at the second preset power at the same time.

[0200] The exhaust device 530 corresponding to the fresh-keeping chamber 511 whose air pressure is greater than the first preset air pressure operates at a second preset power, and stops working when the air pressure in the fresh-keeping chamber 511 is less than or equal to the second preset air pressure, so that the oxygen content in the fresh-keeping chamber 511 is lower and the low-pressure state can be maintained for a longer time.

[0201] The exhaust devices 530 corresponding to the fresh-keeping chambers 511 whose air pressure is less than or equal to the first preset pressure and greater than the second preset pressure are sequentially operated at the second preset power, and stop operating when the air pressure in the fresh-keeping chamber 511 is less than or equal to the second preset pressure. The exhaust devices 530 corresponding to the fresh-keeping chambers 511 that previously stopped operating when the air pressure was less than or equal to the first preset pressure and greater than the second preset pressure are sequentially operated at the second preset power, and stop operating when the air pressure in the fresh-keeping chamber 511 is less than or equal to the second preset pressure. This lowers the oxygen content in these fresh-keeping chambers 511 and allows the low-pressure state to be maintained for a longer period of time. Although the exhaust devices 530 operating at the second preset power are switched, the maximum number of exhaust devices 530 operating at the second preset power is one. Compared to multiple exhaust devices 530 operating at the second preset power simultaneously, this reduces the noise level during refrigerator operation.

[0202] The following embodiments take the case where there are two fresh-keeping components 500 as an example, and each fresh-keeping component 500 is provided with a corresponding exhaust device 530 .

[0203] When the air pressure in the two fresh-keeping chambers 511 is greater than the first preset air pressure, the two exhaust devices 530 are controlled to operate at the first preset power. Compared with the two exhaust devices 530 operating at the second preset power, the noise emitted by the exhaust devices 530 is reduced.

[0204] As the air extraction process proceeds, the air pressure in the two fresh-keeping chambers 511 gradually decreases.

[0205] When the air pressure in one of the fresh-keeping chambers 511 is less than or equal to the first preset air pressure and greater than the second preset air pressure, it means that although this part of the fresh-keeping chamber 511 cannot maintain a low-pressure state for a long time, it already has a low-pressure fresh-keeping function. At this time, the exhaust device 530 corresponding to the fresh-keeping chamber 511 is controlled to stop working.

[0206] The exhaust device 530 corresponding to another fresh-keeping chamber 511 is controlled to operate at a second preset power, and stops working when the air pressure in the fresh-keeping chamber 511 is less than or equal to the second preset air pressure, so that the oxygen content in this fresh-keeping chamber 511 is lower and the low-pressure state can be maintained for a longer time.

[0207] Then, when the air pressure in the fresh-keeping chamber 511 is adjusted to be less than or equal to the first preset air pressure and greater than the second preset air pressure, the air extraction device 530 stops operating. The air extraction device 530 corresponding to the fresh-keeping chamber 511 with an air pressure less than or equal to the first preset air pressure and greater than the second preset air pressure operates at the second preset power until the air pressure in the fresh-keeping chamber 511 is less than or equal to the second preset air pressure, then stops operating, thereby lowering the oxygen content in the fresh-keeping chamber 511 and maintaining the low pressure state for a longer period of time.

[0208] In this embodiment, when both exhaust devices 530 operate simultaneously, they both operate at the first preset power. This reduces noise generated by the exhaust devices 530 compared to when both exhaust devices 530 operate at the second preset power. The maximum number of exhaust devices 530 operating at the second preset power is one, which reduces noise generated by the refrigerator compared to when multiple exhaust devices 530 operate simultaneously at the second preset power.

[0209] In some possible implementations of the embodiments of the present application, the control device 700 may also be configured as follows:

[0210] When the air pressure in some fresh-keeping chambers 511 is greater than the second preset air pressure and less than or equal to the first preset air pressure, the exhaust devices 530 corresponding to the fresh-keeping chambers 511 whose air pressure is greater than the second preset air pressure and less than or equal to the first preset air pressure are controlled to operate at the second preset power in sequence, and stop working when the air pressure in the fresh-keeping chambers 511 is less than or equal to the second preset air pressure.

[0211] Exemplarily, when the air pressure is greater than the second preset air pressure, and the number of fresh-keeping chambers 511 with an air pressure less than or equal to the first preset air pressure is one, the exhaust device 530 corresponding to the fresh-keeping chamber 511 is operated at the second preset power, and stops working when the air pressure of the fresh-keeping chamber 511 is less than or equal to the second preset air pressure, so that the oxygen content in this part of the fresh-keeping chamber 511 is lower and the low-pressure state can be maintained for a longer time.

[0212] When the air pressure is greater than the second preset air pressure, and the number of fresh-keeping chambers 511 that are less than or equal to the first preset air pressure is greater than or equal to two, the corresponding exhaust devices 530 can be controlled in sequence according to the difference between the air pressure in the fresh-keeping chamber 511 and the first preset air pressure, in order from large to small, to operate at the second preset power until the air pressure in the fresh-keeping chamber 511 is less than or equal to the second preset air pressure, and then stop working. After the previous exhaust device 530 stops working, the next exhaust device 530 is controlled to operate at the second preset power until the air pressure in the fresh-keeping chamber 511 is less than or equal to the second preset air pressure, and then stop working, and so on.

[0213] During the entire control process of this embodiment, although the exhaust device 530 operating at the second preset power will be switched, the number of exhaust devices 530 operating at the second preset power is at most one. Compared with multiple exhaust devices 530 operating at the second preset power at the same time, the noise of the refrigerator during operation is reduced.

[0214] The following embodiments take the case where there are two fresh-keeping components 500 as an example, and each fresh-keeping component 500 is provided with a corresponding exhaust device 530 .

[0215] When the air pressure in the two fresh-keeping chambers 511 is adjusted to be less than or equal to the second preset air pressure, the two air extraction devices 530 have stopped working. As time goes by, the air pressure in the two fresh-keeping chambers 511 is released at a very slow rate, causing the air pressure in the fresh-keeping chambers 511 to increase.

[0216] When the air pressure in one of the two fresh-keeping chambers 511 rises to a level greater than the second preset pressure and less than or equal to the first preset pressure, the exhaust device 530 corresponding to the fresh-keeping chamber 511 is controlled to operate at the second preset power, and stops working when the air pressure in the fresh-keeping chamber 511 is less than or equal to the second preset pressure, so that the oxygen content in the fresh-keeping chamber 511 is reduced and the low-pressure state can be maintained for a longer period of time.

[0217] If the air pressure in one fresh-keeping chamber 511 rises to a level greater than the second preset pressure and less than or equal to the first preset pressure, and when the exhaust device 530 is exhausting air, the air pressure in another fresh-keeping chamber 511 also rises to a level greater than the second preset pressure and less than or equal to the first preset pressure, then wait until the air pressure in the first fresh-keeping chamber 511 is less than or equal to the second preset pressure and the exhaust device 530 stops working, and then control the exhaust device 530 corresponding to the second fresh-keeping chamber 511 to operate at the second preset power, and stop working until the air pressure in the fresh-keeping chamber 511 is less than or equal to the second preset pressure.

[0218] In some possible implementations of the present application, reference is made to Figure 3 The control device 700 can also be electrically connected to the drawer state detection device 550. The control device 700 is configured to:

[0219] When some drawers 520 are switched from the pushed-in state to the pulled-out state and then switched to the pushed-in state again, if the air pressure in at least one of the fresh-keeping chambers 511 where the remaining drawers 520 are located is greater than the first preset air pressure, the exhaust devices 530 corresponding to the fresh-keeping chambers 511 whose air pressure is greater than the first preset air pressure are controlled to operate at the second preset power in sequence, and stop working when the air pressure in the fresh-keeping chambers 511 is less than or equal to the first preset air pressure and greater than the second preset air pressure.

[0220] When part of the drawer 520 switches from the pushed-in state to the pulled-out state and then switches to the pushed-in state again, it means that this part of the drawer 520 is pulled out and then pushed in again. The air outside the drawer 520 enters the fresh-keeping chamber 511 when the drawer 520 is pulled out, and the air pressure in the fresh-keeping chamber 511 increases compared to before the drawer 520 is pulled out. At this time, the air pressure in the fresh-keeping chamber 511 where the remaining drawers 520 that have not been pulled out are located is judged. If the air pressure in at least one of the fresh-keeping chambers 511 where the remaining drawers 520 are located is greater than the first preset air pressure, since the air pressure is greater than the first preset air pressure, the air pressure in the fresh-keeping chamber 511 is not enough to form a low-oxygen environment. In order to make the fresh-keeping chamber 511 with an air pressure greater than the first preset air pressure have a low-oxygen fresh-keeping function, the exhaust device 530 corresponding to the fresh-keeping chamber 511 with an air pressure greater than the first preset air pressure is controlled to operate at the second preset power in turn, and stop working when the air pressure in the fresh-keeping chamber 511 is less than or equal to the first preset air pressure and greater than the second preset air pressure. At this time, the air pressure in the fresh-keeping chamber 511 is below the first preset air pressure, forming a low-oxygen environment that is conducive to delaying food oxidation.

[0221] In some possible embodiments, if the air pressure in one of the fresh-keeping chambers 511 where the remaining drawers 520 are located is greater than the first preset air pressure, the exhaust device 530 corresponding to the fresh-keeping chamber 511 whose air pressure is greater than the first preset air pressure is controlled to operate at a second preset power, and stops working when the air pressure in the fresh-keeping chamber 511 is less than or equal to the first preset air pressure and greater than the second preset air pressure. At this time, the air pressure in the fresh-keeping chamber 511 is below the first preset air pressure, forming a low-oxygen environment that is conducive to delaying food oxidation.

[0222] In other possible embodiments, if the air pressure in at least two of the fresh-keeping chambers 511 where the remaining drawers 520 are located is greater than the first preset air pressure, the exhaust devices 530 corresponding to the fresh-keeping chambers 511 whose air pressure is greater than the first preset air pressure can be controlled in descending order according to the difference between the air pressure in the fresh-keeping chamber 511 and the first preset air pressure, to operate at the second preset power, and stop working when the air pressure in the fresh-keeping chamber 511 is less than or equal to the first preset air pressure and greater than the second preset air pressure. At this time, the air pressure in the fresh-keeping chamber 511 is below the first preset air pressure, forming a low-oxygen environment that is conducive to delaying food oxidation. During the entire control process of this embodiment, although the exhaust devices 530 operating at the second preset power will be switched, the number of exhaust devices 530 operating at the second preset power is at most one, which reduces the noise during operation of the refrigerator compared to multiple exhaust devices 530 operating at the second preset power at the same time.

[0223] In some possible implementations of the embodiments of the present application, the control device 700 may also be configured as follows:

[0224] When the air pressure in the fresh-keeping chamber 511 where the other drawers 520 that have not been pulled out are located is less than or equal to the first preset air pressure, the control is switched from the pushed-in state to the pulled-out state, and the exhaust device 530 corresponding to the drawer 520 that is switched to the pushed-in state again operates at the second preset power, and stops working when the air pressure in the fresh-keeping chamber 511 is less than or equal to the second preset air pressure.

[0225] When the air pressure in the fresh-keeping chambers 511 where the other undrawn drawers 520 are located is less than or equal to the first preset air pressure, it indicates that the fresh-keeping chambers 511 where the other undrawn drawers 520 are located have formed a low-oxygen environment that is conducive to delaying food oxidation. At this time, the exhaust devices 530 corresponding to the drawers 520 that are switched from the pushed-in state to the pulled-out state and then switched back to the pushed-in state are controlled to operate at the second preset power in sequence, and stop working when the air pressure in the fresh-keeping chambers 511 is less than or equal to the second preset air pressure, so that these fresh-keeping chambers 511 not only achieve a low-oxygen environment that is conducive to delaying food oxidation, but also have a lower oxygen content and can maintain the low-pressure state for a longer period of time.

[0226] During the entire control process of this embodiment, although the exhaust device 530 operating at the second preset power will be switched, the number of exhaust devices 530 operating at the second preset power is at most one. Compared with multiple exhaust devices 530 operating at the second preset power at the same time, the noise of the refrigerator during operation is reduced.

[0227] In some possible implementations of the embodiments of the present application, the control device 700 may also be configured as follows:

[0228] When the air pressure in the fresh-keeping chamber 511 where the drawer 520 is located is switched from the pushed-in state to the pulled-out state and then switched to the pushed-in state again is less than or equal to the second preset air pressure, the exhaust devices 530 corresponding to the fresh-keeping chambers 511 whose air pressure is less than or equal to the first preset air pressure and greater than the second preset air pressure are controlled to operate at the second preset power in sequence, and stop working when the air pressure in the fresh-keeping chamber 511 is less than or equal to the second preset air pressure, so that these fresh-keeping chambers 511 not only reach a low-oxygen environment that is conducive to delaying the oxidation of food, but also have a lower oxygen content and can maintain a low-pressure state for a longer time.

[0229] During the entire control process of this embodiment, although the exhaust device 530 operating at the second preset power will be switched, the number of exhaust devices 530 operating at the second preset power is at most one. Compared with multiple exhaust devices 530 operating at the second preset power at the same time, the noise of the refrigerator during operation is reduced.

[0230] The following embodiments take the case where there are two fresh-keeping components 500 as an example, and each fresh-keeping component 500 is provided with a corresponding exhaust device 530 .

[0231] When a drawer 520 is pulled out from the pushed-in state and pushed in again, it is determined whether the air pressure in the fresh-keeping chamber 511 corresponding to another drawer 520 that has not been pulled out is less than or equal to the first preset air pressure.

[0232] If the air pressure of the drawer 520 that has not been pulled out is greater than the first preset air pressure, the air extraction device 530 corresponding to the drawer 520 that has not been pulled out is controlled to operate at the second preset power until the air pressure is less than or equal to the first preset air pressure.

[0233] If the air pressure of the drawer 520 that has not been pulled out is less than or equal to the first preset air pressure, the exhaust device 530 corresponding to the drawer 520 that has not been pulled out is controlled to stop running, and the exhaust device 530 corresponding to the drawer 520 that has been pulled out from the pushed-in state and pushed in again is controlled to run at the second preset power until the air pressure is less than or equal to the second preset air pressure, and then stop working.

[0234] When the air pressure of the drawer 520 that is pulled out from the pushed-in state and pushed in again is less than or equal to the second preset air pressure, and the exhaust device 530 stops working, the air pressure of the drawer 520 that has not been pulled out is adjusted again, and the exhaust device 530 corresponding to the drawer 520 that has not been pulled out is controlled to run at the second preset power until the air pressure is less than or equal to the second preset air pressure.

[0235] In an implementation in which the refrigerator includes the communication device 600, the control device 700 may also be configured to:

[0236] When the partial drawer 520 is switched from the pushed-in state to the pulled-out state and then switched back to the pushed-in state again, the control valve 620 is controlled to open.

[0237] When some drawers 520 are switched from the pushed-in state to the pulled-out state and then switched back to the pushed-in state, it means that these drawers 520 have been pulled out and then pushed in again. The air outside the drawers 520 enters the fresh-keeping chamber 511 when the drawers 520 are pulled out, and the air pressure in the fresh-keeping chamber 511 increases compared to before the drawers 520 are pulled out. The air pressure in the fresh-keeping chamber 511 where the other drawers 520 that have not been pulled out are located is less than or equal to the first preset air pressure. At this time, the control valve 620 is opened. Due to the existence of the air pressure difference, some of the air in the fresh-keeping chamber 511 where the drawers 520 that have been pulled out are located enter the fresh-keeping chamber 511 where the drawers 520 that have not been pulled out are located. When the air pressure in all the fresh-keeping chambers 511 is basically the same, there is basically no air pressure difference between the fresh-keeping chambers 511, and basically no gas flow occurs.

[0238] Part of the gas in the fresh-keeping chamber 511 where the drawn drawer 520 is located enters the fresh-keeping chamber 511 where the undrawn drawer 520 is located, which can quickly reduce the air pressure in the fresh-keeping chamber 511 where the drawn drawer 520 is located, thereby reducing the oxygen content in the fresh-keeping chamber 511, which is beneficial to slowing down the oxidation rate of food in the fresh-keeping chamber 511.

[0239] When the air pressure in some fresh-keeping chambers 511 is greater than the first preset air pressure, the exhaust devices 530 corresponding to the fresh-keeping chambers 511 whose air pressure is greater than the first preset air pressure are controlled to operate at the second preset power in sequence, and stop working when the air pressure in the fresh-keeping chambers 511 is less than or equal to the second preset air pressure.

[0240] For example, when the number of fresh-keeping chambers 511 with air pressure greater than the first preset air pressure is one, the exhaust device 530 corresponding to the fresh-keeping chamber 511 with air pressure greater than the first preset air pressure is controlled to operate at the second preset power, and stops working when the air pressure in the fresh-keeping chamber 511 is less than or equal to the first preset air pressure and greater than the second preset air pressure. At this time, the air pressure in the fresh-keeping chamber 511 is below the first preset air pressure, forming a low-oxygen environment that is conducive to delaying food oxidation.

[0241] When there are at least two fresh-keeping chambers 511 with air pressures greater than the first preset pressure, the exhaust devices 530 corresponding to the fresh-keeping chambers 511 with air pressures greater than the first preset pressure can be controlled to operate at the second preset power according to the difference between the air pressure in the fresh-keeping chamber 511 and the first preset pressure, in descending order of the difference. When the air pressure in the fresh-keeping chamber 511 is less than or equal to the first preset pressure and greater than the second preset pressure, the exhaust devices 530 stop working. At this time, the air pressure in the fresh-keeping chamber 511 is below the first preset pressure, forming a low-oxygen environment that is conducive to delaying food oxidation. Although the exhaust devices 530 operating at the second preset power will be switched, the number of exhaust devices 530 operating at the second preset power is at most one. Compared with multiple exhaust devices 530 operating at the second preset power at the same time, the noise during the operation of the refrigerator is reduced.

[0242] The following embodiments take the case where there are two fresh-keeping components 500 as an example, and each fresh-keeping component 500 is provided with a corresponding exhaust device 530 .

[0243] When one of the two drawers 520 is pulled out and then pushed in from the pushed-in state, and the other remains in the pushed-in state, the control valve 620 is opened, and the gas in the drawer 520 that was pulled out and then pushed in from the pushed-in state enters the other drawer 520 that remains in the pushed-in state through the connecting pipe 610, causing the air pressure in the drawer 520 that was pulled out and then pushed in from the pushed-in state to drop rapidly.

[0244] Then the air pressure in the two fresh-keeping chambers 511 is judged. When the air pressure in one of the fresh-keeping chambers 511 is greater than the first preset air pressure and the other is less than or equal to the first preset air pressure, the exhaust device 530 corresponding to the fresh-keeping chamber 511 with an air pressure greater than the first preset air pressure is controlled to operate at a second preset power until the air pressure is less than or equal to the second preset air pressure and then stops working.

[0245] In an implementation in which the fresh-keeping component 500 includes the temperature detection device 560 and the refrigerator includes the cold delivery device 400 , the fresh-keeping chamber 511 may be provided with a fresh-keeping target temperature.

[0246] The preservation target temperature may include a first preservation temperature. For example, the first preservation temperature may be -1°C to -1°C. When the temperature in the preservation chamber 511 is the first preservation temperature, the preservation chamber 511 may store fresh food (for example, meat, fish, and poultry, which require a lower temperature to stay fresh).

[0247] The fresh-keeping temperature may further include a second fresh-keeping temperature, which is greater than the first fresh-keeping temperature. For example, the second fresh-keeping temperature may be 4°C-5°C. When the temperature in the fresh-keeping chamber 511 is at the second fresh-keeping temperature, the fresh-keeping chamber 511 may store fruits and vegetables (e.g., fresh fruits and vegetables), which do not require excessively low temperatures during storage. Setting the temperature to the second fresh-keeping temperature may reduce energy consumption of the refrigerator.

[0248] The storage chamber 111 may be set with a storage target temperature.

[0249] The storage target temperature may include a first storage temperature, and the first storage temperature may be 1°C-3°C.

[0250] The storage target temperature may further include a second storage temperature, which is greater than the first storage temperature. The second storage temperature may be 3°C-8°C.

[0251] refer to Figure 3 The control device 700 is also electrically connected to the control valve 620, the temperature detection device 560 and the cold transport device 400. The control device 700 is configured to: when the fresh-keeping target temperature of at least part of the fresh-keeping chamber 511 is switched from the second fresh-keeping temperature to the first fresh-keeping temperature, control the cold transport device 400 to increase the cold transported to the fresh-keeping chamber 511 and the storage chamber 111.

[0252] When the preservation temperature of at least part of the preservation chamber 511 is switched from the second preservation temperature to the first preservation temperature, it indicates that the preservation target temperature of the preservation chamber 511 is the first preservation temperature, and the actual temperature in the preservation chamber 511 is greater than the first preservation temperature. At this time, the cold transport device 400 is controlled to increase the cold transported to the preservation chamber 511, for example, the opening of the second air volume regulating valve is controlled to increase, and the air volume transported from the evaporator bin to the preservation chamber 511 is increased to transport cold adapted to the first preservation temperature to the preservation chamber 511, so that the temperature in the preservation chamber 511 can be quickly reduced to the first preservation temperature.

[0253] In addition to controlling the cold transport device 400 to increase the cold transported to the fresh-keeping chamber 511, the cold transport device 400 is also controlled to increase the cold transported to the storage chamber 111. For example, the opening of the first air volume regulating valve is controlled to increase, thereby increasing the air volume transported from the evaporator bin to the refrigerated chamber. This allows cold transport to the storage chamber 111 that is compatible with the first storage temperature, thereby rapidly reducing the temperature in the storage chamber 111 to the first storage temperature. Since the fresh-keeping assembly 500 is disposed within the storage chamber 111, the cold transported to the fresh-keeping chamber 511 can indirectly reduce the temperature in the fresh-keeping chamber 511 via the housing 510 of the fresh-keeping assembly 500 and the front wall 101 of the drawer 520. By reducing the temperature in the storage chamber 111, the temperature in the fresh-keeping chamber 511 can be further reduced, thereby rapidly reducing the temperature in the fresh-keeping chamber 511 to the first fresh-keeping temperature.

[0254] In the implementation mode in which the refrigerator includes the connecting device 600, the control device 700 can also be configured as follows: when the preservation target temperature of a part of the preservation chamber 511 is set to the first preservation temperature and maintained for a preset period of time, and the preservation target temperature of another part of the preservation chamber 511 is switched from the second preservation temperature to the first preservation temperature, the control valve 620 is controlled to open, and the exhaust device 530 corresponding to the preservation chamber 511 that is switched from the second preservation temperature to the first preservation temperature is controlled to operate.

[0255] For ease of description, in the following embodiments, the fresh-keeping chamber 511 whose target fresh-keeping temperature is the first fresh-keeping temperature and is maintained for a preset time is referred to as the first partial fresh-keeping chamber 511; the fresh-keeping chamber 511 whose target fresh-keeping temperature is switched from the second fresh-keeping temperature to the first fresh-keeping temperature is referred to as the second partial fresh-keeping chamber 511.

[0256] Since the target temperature of the first fresh-keeping chamber 511 is set to the first fresh-keeping temperature and maintained for a preset time, the actual temperature in the first fresh-keeping chamber 511 is lower than the second fresh-keeping temperature and greater than or equal to the first fresh-keeping temperature.

[0257] The target fresh-keeping temperature of the second fresh-keeping chamber 511 is switched from the second fresh-keeping temperature to the first fresh-keeping temperature, indicating that the target fresh-keeping temperature of the second fresh-keeping chamber 511 is the first fresh-keeping temperature and the actual temperature in the fresh-keeping chamber 511 is greater than the first fresh-keeping temperature. At this time, the control valve 620 is opened, and the exhaust device 530 corresponding to the second fresh-keeping chamber 511 is controlled to operate, so as to draw the cold energy in the first fresh-keeping chamber 511 into the second fresh-keeping chamber 511, thereby rapidly reducing the temperature in the second fresh-keeping chamber 511.

[0258] refer to Figure 3In an implementation in which the refrigerator includes a door 200 and a door status detection device 300, the control device 700 may also be electrically connected to the door status detection device 300. The control device 700 may be configured as follows:

[0259] When the door body 200 is in the open state, all the air extraction devices 530 are controlled to stop working.

[0260] Since the door body 200 has a certain sound insulation effect when it is in the closed state, when the door body 200 is in the open state, the door body 200 has no sound insulation effect. If the exhaust device 530 is running, the noise of the refrigerator felt by the user will increase. Therefore, controlling all the exhaust devices 530 to suspend work at this time can reduce the noise of the refrigerator felt by the user.

[0261] When the door body 200 is switched from the open state to the closed state, the air extraction device 530 is controlled to operate at the power before the suspension of operation.

[0262] When the door body 200 switches from the open state to the closed state, the door body 200 is in the closed state at this time, and the door body 200 has a certain sound insulation effect. The exhaust device 530 is controlled to run at the power before suspending work, so as to continue to exhaust the fresh-keeping chamber 511.

[0263] Exemplarily, before the door body 200 is opened, part of the exhaust device 530 operates at a first preset power. When the door body 200 is opened, this part of the exhaust device 530 stops working. When the door body 200 is subsequently closed, this part of the exhaust device 530 continues to operate at the first preset power to exhaust the corresponding fresh-keeping chambers 511 respectively.

[0264] Before the door body 200 is opened, an exhaust device 530 operates at a second preset power. When the door body 200 is opened, the exhaust device 530 stops working. When the door body 200 is subsequently closed, the exhaust device 530 continues to operate at the second preset power to exhaust the corresponding fresh-keeping chamber 511.

[0265] Based on the above refrigerator, Figure 4 The schematic diagram of the process of a refrigerator control method provided by the embodiment of the present application is shown Figure 1 , the control method can be executed by the control device of the refrigerator, referring to Figure 4 , the control method comprises the following steps:

[0266] S101. When the number of fresh-keeping chambers having air pressure greater than a first preset air pressure is greater than or equal to two, the exhaust devices corresponding to the fresh-keeping chambers having air pressure greater than the first preset air pressure are controlled to operate at a first preset power.

[0267] S102: When the air pressure in the fresh-keeping chamber is less than or equal to the first preset air pressure and greater than the second preset air pressure, the air extraction device corresponding to the fresh-keeping chamber whose air pressure is less than or equal to the first preset air pressure and greater than the second preset air pressure stops working.

[0268] S103. When the number of fresh-keeping chambers with air pressure greater than the first preset air pressure is one, the exhaust device corresponding to the fresh-keeping chamber with air pressure greater than the first preset air pressure is controlled to operate at a second preset power, and stops working when the air pressure of the fresh-keeping chamber with air pressure greater than the first preset air pressure is less than or equal to the second preset air pressure.

[0269] S104, controlling the air pressure to be less than or equal to the first preset air pressure and greater than the second preset air pressure, and the exhaust devices corresponding to the fresh-keeping chambers to operate at the second preset power in sequence, and stop working when the air pressure in the fresh-keeping chamber is less than or equal to the second preset air pressure.

[0270] The second preset air pressure is lower than the first preset air pressure, and both the first preset air pressure and the second preset air pressure are lower than the standard atmospheric pressure; and the second preset power is higher than the first preset power.

[0271] For the specific implementation of each of the above steps, please refer to the above embodiments and will not be described in detail here.

[0272] refer to Figure 4 and Figure 5 In an embodiment of the present application, when the number of fresh-keeping chambers with air pressure greater than the first preset air pressure is greater than or equal to two, the exhaust devices corresponding to the fresh-keeping chambers with air pressure greater than the first preset air pressure are controlled to operate at the first preset power, thereby reducing the noise when the refrigerator is working. After at least two exhaust devices have been running at the first preset power for a period of time, when the air pressure in some fresh-keeping chambers is below the first preset pressure, it indicates that this part of the fresh-keeping chamber has already had a low-pressure fresh-keeping function, and the exhaust devices corresponding to this part of the fresh-keeping chamber are controlled to stop working; when the number of fresh-keeping chambers with air pressure greater than the first preset pressure is one, the exhaust devices corresponding to the fresh-keeping chambers with air pressure greater than the first preset pressure are controlled to run at the second preset power until the air pressure in the fresh-keeping chamber reaches the second preset pressure. When the second preset pressure is lower than the first preset pressure, it indicates that this part of the fresh-keeping chamber has already had a better low-pressure fresh-keeping function and can maintain the low-pressure state for a longer time. At this time, the exhaust device is controlled to stop working, and the exhaust devices corresponding to the fresh-keeping chambers with air pressure between the first preset pressure and the second preset pressure are controlled to run at the second preset power in turn until the air pressure in the fresh-keeping chamber reaches the second preset pressure, and then stop working. During the entire control process, when multiple exhaust devices are required to work simultaneously, the multiple exhaust devices all operate at the first preset power, and the exhaust devices do not operate at the second preset power at the same time, so as to reduce the noise when multiple exhaust devices operate at the second preset power at the same time.

[0273] It is understandable that when the air pressure in the heat preservation chamber is less than or equal to the second preset air pressure, after the vacuum device stops working, the air pressure in the fresh-keeping chamber will be gradually released from the second preset air pressure to the first preset air pressure at a very slow speed. When the air pressure in the fresh-keeping chamber is less than or equal to the first preset air pressure, the fresh-keeping chamber has a certain low-pressure fresh-keeping function. When the air pressure in the fresh-keeping chamber is released to be greater than the first preset air pressure, the air pressure in the fresh-keeping chamber is not enough to form a low-oxygen environment. At this time, the fresh-keeping period of the food in the fresh-keeping chamber will be shortened. Below, after the vacuum device stops working, when the air pressure in part of the fresh-keeping chamber is greater than the second preset air pressure and less than or equal to the first preset air pressure, how the control device reduces the noise of the refrigerator while maintaining the low-pressure fresh-keeping environment of the fresh-keeping chamber is explained.

[0274] Figure 6 The schematic diagram of the process of a refrigerator control method provided by the embodiment of the present application is shown Figure 3 , the control method can be executed by the control device of the refrigerator, referring to Figure 6 The control method includes the above steps S101 to S104, and may further include the following steps:

[0275] S105. When the air pressure in some fresh-keeping chambers is greater than the second preset air pressure and less than or equal to the first preset air pressure, the exhaust devices corresponding to the fresh-keeping chambers whose air pressure is greater than the second preset air pressure and less than or equal to the first preset air pressure are controlled to operate at the second preset power in sequence, and stop working when the air pressure in the fresh-keeping chamber is less than or equal to the second preset air pressure.

[0276] refer to Figure 6 and Figure 7 During the entire control process of this embodiment, although the exhaust device operating at the second preset power will be switched, the number of exhaust devices operating at the second preset power is at most one. Compared with multiple exhaust devices operating at the second preset power at the same time, the noise of the refrigerator during operation is reduced.

[0277] Figure 8 The schematic diagram of the process of a refrigerator control method provided by the embodiment of the present application is shown Figure 5 , the control method can be executed by the control device of the refrigerator, referring to Figure 8 The control method includes the above steps S101 to S104, and may further include the following steps:

[0278] S106. When some drawers are switched from the pushed-in state to the pulled-out state and then switched to the pushed-in state again, if the air pressure of at least one of the fresh-keeping chambers where the remaining drawers are located is greater than the first preset air pressure, the exhaust devices corresponding to the fresh-keeping chambers with air pressure greater than the first preset air pressure are controlled to operate at the second preset power in sequence, and stop working when the air pressure in the fresh-keeping chamber is less than or equal to the first preset air pressure and greater than the second preset air pressure.

[0279] S107, controlling the drawer to switch from the pushed-in state to the pulled-out state and then switch back to the pushed-in state, and the corresponding exhaust device operates at a second preset power, and stops working when the air pressure in the fresh-keeping chamber is less than or equal to the second preset air pressure.

[0280] S108. The exhaust devices corresponding to the fresh-keeping chambers whose air pressure is less than or equal to the first preset air pressure and greater than the second preset air pressure are controlled to operate at the second preset power in sequence, and stop working when the air pressure in the fresh-keeping chamber is less than or equal to the second preset air pressure.

[0281] refer to Figure 8 and Figure 9 In this embodiment, the fresh-keeping chambers corresponding to the unopened drawers are first activated with a low-pressure fresh-keeping function. The air pressure in the fresh-keeping chambers corresponding to the opened drawers is then adjusted to the second preset pressure. Finally, the air pressure in the fresh-keeping chambers corresponding to the unopened drawers is adjusted back to the second preset pressure. During the entire control process of this embodiment, although the exhaust device operating at the second preset power is switched, the maximum number of exhaust devices operating at the second preset power is one. This reduces refrigerator operating noise compared to multiple exhaust devices operating simultaneously at the second preset power.

[0282] Figure 10 The schematic diagram of the process of a refrigerator control method provided by the embodiment of the present application is shown Figure 7 , the control method can be executed by the control device of the refrigerator, referring to Figure 10 The control method includes the above steps S101 to S104, and may further include the following steps:

[0283] S109: When some drawers are switched from the pushed-in state to the pulled-out state and then switched to the pushed-in state again, the control valve is controlled to open.

[0284] S110. When the air pressure in some fresh-keeping chambers is greater than the first preset air pressure, the exhaust devices corresponding to the fresh-keeping chambers with air pressure greater than the first preset air pressure are controlled to operate at the second preset power in sequence, and stop working when the air pressure in the fresh-keeping chamber is less than or equal to the second preset air pressure.

[0285] After the control valve is opened, part of the gas in the fresh-keeping chamber where the drawn drawer is located enters the fresh-keeping chamber where the undrawn drawer is located, which can quickly reduce the air pressure in the fresh-keeping chamber where the drawn drawer is located, thereby reducing the oxygen content in the fresh-keeping chamber, which is beneficial to slowing down the oxidation rate of food in the fresh-keeping chamber.

[0286] When there are at least two fresh-keeping chambers with air pressures greater than the first preset pressure, the exhaust devices corresponding to the fresh-keeping chambers with air pressures greater than the first preset pressure can be controlled to operate at the second preset power according to the difference between the air pressure in the fresh-keeping chamber and the first preset pressure, in descending order of the difference. When the air pressure in the fresh-keeping chamber is less than or equal to the first preset pressure and greater than the second preset pressure, the exhaust devices stop operating. At this time, the air pressure in the fresh-keeping chamber is below the first preset pressure, creating a low-oxygen environment that is conducive to delaying food oxidation. Although the exhaust devices operating at the second preset power will be switched, the maximum number of exhaust devices operating at the second preset power is one. Compared with multiple exhaust devices operating at the second preset power at the same time, the noise during refrigerator operation is reduced.

[0287] Figure 11 The schematic diagram of the process of a refrigerator control method provided by the embodiment of the present application is shown Figure 8 , the control method can be executed by the control device of the refrigerator, referring to Figure 11 The control method includes the above steps S101 to S104, and may further include the following steps:

[0288] S111. When the target fresh-keeping temperature of at least part of the fresh-keeping chambers is switched from the second fresh-keeping temperature to the first fresh-keeping temperature, the cold transport device is controlled to increase the cold transported to the fresh-keeping chambers and the storage chambers.

[0289] When the preservation temperature of at least part of the preservation chamber is switched from the second preservation temperature to the first preservation temperature, it indicates that the preservation target temperature of the preservation chamber is the first preservation temperature, and the actual temperature in the preservation chamber is greater than the first preservation temperature. At this time, the cold transport device is controlled to increase the cold transported to the preservation chamber, for example, the opening of the second air volume regulating valve is controlled to increase, and the air volume transported from the evaporator bin to the preservation chamber is increased to transport cold adapted to the first preservation temperature to the preservation chamber, so that the temperature in the preservation chamber can be quickly reduced to the first preservation temperature.

[0290] In addition to controlling the cold transport device to increase the cold transported to the fresh-keeping chamber, the cold transport device is also controlled to increase the cold transported to the storage chamber. For example, the opening of the first air volume regulating valve is controlled to increase, thereby increasing the air volume transported from the evaporator compartment to the refrigerated chamber, thereby transporting cold adapted to the first storage temperature to the storage chamber, thereby rapidly lowering the temperature within the storage chamber to the first storage temperature. Since the fresh-keeping assembly is disposed within the storage chamber, the cold within the storage chamber can indirectly lower the temperature within the fresh-keeping chamber via the outer shell of the fresh-keeping assembly and the front wall of the drawer. By lowering the temperature of the storage chamber, the temperature within the fresh-keeping chamber can be further lowered, thereby rapidly lowering the temperature within the fresh-keeping chamber to the first fresh-keeping temperature.

[0291] Figure 12The schematic diagram of the process of a refrigerator control method provided by the embodiment of the present application is shown Figure 9 , the control method can be executed by the control device of the refrigerator, referring to Figure 12 The control method includes the above steps S101 to S104, and may further include the following steps:

[0292] S112. When the target temperature of a part of the fresh-keeping chambers is set to the first fresh-keeping temperature and maintained for a preset time, and the target temperature of another part of the fresh-keeping chambers is switched from the second fresh-keeping temperature to the first fresh-keeping temperature, the control valve is controlled to open, and the exhaust device corresponding to the fresh-keeping chamber switched from the second fresh-keeping temperature to the first fresh-keeping temperature is controlled to operate.

[0293] For ease of description, in the following embodiments, the fresh-keeping target temperature is the first fresh-keeping temperature, and the fresh-keeping chamber maintained for a preset time is called the first part of the fresh-keeping chamber; the fresh-keeping chamber that switches the fresh-keeping target temperature from the second fresh-keeping temperature to the first fresh-keeping temperature is called the second part of the fresh-keeping chamber.

[0294] Since the target temperature of the first fresh-keeping chamber is set to the first fresh-keeping temperature and maintained for a preset time, the actual temperature in the first fresh-keeping chamber is lower than the second fresh-keeping temperature and greater than or equal to the first fresh-keeping temperature.

[0295] The target fresh-keeping temperature of the second fresh-keeping chamber is switched from the second fresh-keeping temperature to the first fresh-keeping temperature, indicating that the target fresh-keeping temperature of the second fresh-keeping chamber is the first fresh-keeping temperature and the actual temperature in the fresh-keeping chamber is greater than the first fresh-keeping temperature. At this time, the control valve is opened and the exhaust device corresponding to the second fresh-keeping chamber is controlled to operate to draw the cold air in the first fresh-keeping chamber into the second fresh-keeping chamber, so that the temperature in the second fresh-keeping chamber can be quickly reduced.

[0296] The refrigerator control method provided in the embodiment of the present application may further include the following steps:

[0297] S113, when the door is in the open state, controlling all the exhaust devices to suspend operation;

[0298] S114. When the door body switches from the open state to the closed state, the exhaust device is controlled to operate at the power before the suspension of work.

[0299] Since the door body has a certain sound insulation effect when it is in the closed state, it has no sound insulation effect when it is in the open state. If the exhaust device is running, the noise of the refrigerator felt by the user will increase. Therefore, controlling all the exhaust devices to suspend work at this time can reduce the noise of the refrigerator felt by the user.

[0300] When the door body switches from an open state to a closed state, the door body is in a closed state at this time, and the door body has a certain sound insulation effect. The exhaust device is controlled to operate at the power before suspending work, thereby continuing to exhaust the fresh-keeping chamber.

[0301] The present application also provides a computer-readable storage medium, which may include: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, and other media that can store program codes. Specifically, the computer-readable storage medium stores computer execution instructions, which, when executed by a computer, are used to implement the technical solution shown in the above method embodiment.

[0302] The present application also provides a program product, which includes execution instructions stored in a readable storage medium. When the computer program is executed by a computer, the technical solution shown in the above method embodiment is executed. The specific implementation method and technical effect are similar and will not be repeated here.

[0303] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

[0304] For ease of explanation, the above description has been presented 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. Based on the above teachings, various modifications and variations are possible. The above embodiments have been selected and described to better explain the principles and practical applications, thereby enabling those skilled in the art to better utilize the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A refrigerator, characterized in that: include: A box body, defining a storage compartment; At least two fresh-keeping components are arranged in the storage room, and the fresh-keeping components include: a housing defining a fresh-keeping chamber; A drawer is pullable and arranged in the fresh-keeping chamber, and when the drawer is in a pushed-in state, the drawer closes the fresh-keeping chamber; An air extraction device, used for extracting the air in the fresh-keeping chamber; An air pressure detection device, used to detect the air pressure in the fresh-keeping chamber; A control device is electrically connected to the air extraction device and the air pressure detection device, and is configured to: When the number of the fresh-keeping chambers having an air pressure greater than the first preset air pressure is greater than or equal to two, the air extraction devices corresponding to the fresh-keeping chambers having an air pressure greater than the first preset air pressure are controlled to operate at a first preset power; When the air pressure in the fresh-keeping chamber is less than or equal to the first preset air pressure and greater than the second preset air pressure, the air extraction device corresponding to the fresh-keeping chamber whose air pressure is less than or equal to the first preset air pressure and greater than the second preset air pressure stops working; When the number of the fresh-keeping chambers with air pressure greater than the first preset air pressure is one, the air extraction device corresponding to the fresh-keeping chamber with air pressure greater than the first preset air pressure is controlled to operate at a second preset power, and stops operating when the air pressure of the fresh-keeping chamber with air pressure greater than the first preset air pressure becomes less than or equal to the second preset air pressure; The exhaust devices corresponding to the fresh-keeping chambers whose air pressure is controlled to be less than or equal to the first preset air pressure and greater than the second preset air pressure are operated in sequence at the second preset power, and stop working when the air pressure in the fresh-keeping chamber is less than or equal to the second preset air pressure; The second preset air pressure is lower than the first preset air pressure, and both the first preset air pressure and the second preset air pressure are lower than the standard atmospheric pressure; and the second preset power is higher than the first preset power.

2. The refrigerator according to claim 1, wherein: The control device is configured to: When the air pressure in some of the fresh-keeping chambers is greater than the second preset air pressure and less than or equal to the first preset air pressure, the exhaust devices corresponding to the fresh-keeping chambers whose air pressure is greater than the second preset air pressure and less than or equal to the first preset air pressure are controlled to operate at the second preset power in sequence, and stop working when the air pressure in the fresh-keeping chamber is less than or equal to the second preset air pressure.

3. The refrigerator according to claim 1, wherein: The fresh-keeping component also includes: A drawer state detection device, used to detect the open and close state of the drawer; wherein the open and close state of the drawer includes the pushed-in state and the pulled-out state; The air extraction device sucks the air in the fresh-keeping chamber when the drawer is in the pushed-in state; The air pressure detection device detects the air pressure in the fresh-keeping chamber when the drawer is in the pushed-in state.

4. The refrigerator according to claim 3, characterized in that The control device is also electrically connected to the drawer state detection device, and the control device is configured to: When some of the drawers are switched from the pushed-in state to the pulled-out state and then switched back to the pushed-in state, if the air pressure in at least one of the fresh-keeping chambers where the remaining drawers are located is greater than the first preset air pressure, the air extraction devices corresponding to the fresh-keeping chambers with air pressures greater than the first preset air pressure are controlled to operate at the second preset power in sequence, and stop operating when the air pressure in the fresh-keeping chambers is less than or equal to the first preset air pressure and greater than the second preset air pressure; Controlling the exhaust device corresponding to the drawer that switches from the pushed-in state to the pulled-out state and then switches back to the pushed-in state to operate at the second preset power, and stopping operation when the air pressure in the fresh-keeping chamber is less than or equal to the second preset air pressure; The exhaust device corresponding to the fresh-keeping chamber whose air pressure is controlled to be less than or equal to the first preset air pressure and greater than the second preset air pressure operates at the second preset power in sequence, and stops working when the air pressure in the fresh-keeping chamber is less than or equal to the second preset air pressure.

5. The refrigerator according to claim 3, characterized in that The refrigerator further includes a communication device, wherein the communication device includes: at least two communicating tubes, each of the communicating tubes corresponding to the fresh-keeping chambers, one end of each communicating tube being connected to the housing and communicating with the fresh-keeping chambers; The control valves are respectively connected to one end of the communicating pipe away from the fresh-keeping chamber. When the control valves are opened, at least two of the fresh-keeping chambers are connected through the communicating pipe.

6. The refrigerator according to claim 5, characterized in that The control device is also electrically connected to the drawer state detection device and the control valve, and is configured as follows: When part of the drawers are switched from the pushed-in state to the pulled-out state and then switched back to the pushed-in state, controlling the control valve to open; When the air pressure in some of the fresh-keeping chambers is greater than the first preset air pressure, the exhaust devices corresponding to the fresh-keeping chambers with air pressure greater than the first preset air pressure are controlled to operate at the second preset power in sequence, and stop working when the air pressure in the fresh-keeping chamber is less than or equal to the second preset air pressure.

7. The refrigerator according to claim 5, characterized in that The fresh-keeping component further includes a temperature detection device, which is used to detect the temperature in the fresh-keeping chamber; The refrigerator further comprises a cold transport device, the cold transport device being used to transport cold energy to the fresh-keeping chamber and the storage chamber respectively; The control device is also electrically connected to the control valve, the temperature detection device and the cold transport device, and is configured as follows: When the target fresh-keeping temperature of at least part of the fresh-keeping chamber is switched from the second fresh-keeping temperature to the first fresh-keeping temperature, controlling the cold transport device to increase the cold transported to the fresh-keeping chamber and the storage chamber; The target fresh-keeping temperature includes a first fresh-keeping temperature and a second fresh-keeping temperature, and the first fresh-keeping temperature is lower than the second fresh-keeping temperature.

8. The refrigerator according to claim 7, characterized in that The control device is further configured to: When the target fresh-keeping temperature of a part of the fresh-keeping chambers is set to the first fresh-keeping temperature and maintained for a preset period of time, and the target fresh-keeping temperature of another part of the fresh-keeping chambers is switched from the second fresh-keeping temperature to the first fresh-keeping temperature, the control valve is controlled to open, and the exhaust device corresponding to the fresh-keeping chamber that is switched from the second fresh-keeping temperature to the first fresh-keeping temperature is controlled to operate.

9. The refrigerator according to any one of claims 1 to 8, characterized in that: The refrigerator further comprises: a door body, rotatably arranged relative to the box body to open or close the storage chamber; A door state detection device, used to detect the switch state of the door, the switch state of the door including the open state and the closed state; The control device is also electrically connected to the door state detection device, and the control device is configured to: When the door body is in the open state, all the air extraction devices are controlled to stop working; When the door body is switched from the open state to the closed state, the air extraction device is controlled to operate at the power before the operation is suspended.

10. A refrigerator control method, characterized in that: The refrigerator comprises: A box body, defining a storage compartment; At least two fresh-keeping components are arranged in the storage room, and the fresh-keeping components include: a housing defining a fresh-keeping chamber; A drawer is pullable and arranged in the fresh-keeping chamber, and when the drawer is in a pushed-in state, the drawer closes the fresh-keeping chamber; An air extraction device, used for extracting the air in the fresh-keeping chamber; An air pressure detection device, used to detect the air pressure in the fresh-keeping chamber; The control method includes: When the number of the fresh-keeping chambers having an air pressure greater than the first preset air pressure is greater than or equal to two, the air extraction devices corresponding to the fresh-keeping chambers having an air pressure greater than the first preset air pressure are controlled to operate at a first preset power; When the air pressure in the fresh-keeping chamber is less than or equal to the first preset air pressure and greater than the second preset air pressure, the air extraction device corresponding to the fresh-keeping chamber whose air pressure is less than or equal to the first preset air pressure and greater than the second preset air pressure stops working; When the number of the fresh-keeping chambers with air pressure greater than the first preset air pressure is one, the air extraction device corresponding to the fresh-keeping chamber with air pressure greater than the first preset air pressure is controlled to operate at a second preset power, and stops operating when the air pressure of the fresh-keeping chamber with air pressure greater than the first preset air pressure becomes less than or equal to the second preset air pressure; The exhaust devices corresponding to the fresh-keeping chambers whose air pressure is controlled to be less than or equal to the first preset air pressure and greater than the second preset air pressure are operated in sequence at the second preset power, and stop working when the air pressure in the fresh-keeping chamber is less than or equal to the second preset air pressure; The second preset air pressure is lower than the first preset air pressure, and both the first preset air pressure and the second preset air pressure are lower than the standard atmospheric pressure; and the second preset power is higher than the first preset power.

Images