Refrigerator and silent control method thereof

Abstract

The application discloses a refrigerator and a mute control method thereof. The refrigerator comprises a cabinet, a compressor, a fan, an ambient noise sensor and a chamber temperature sensor. The controller is configured to: when detecting that the refrigerator is running in a normal refrigeration period, control the compressor and the fan to adjust the rotating speed according to the ambient noise of the environment where the refrigerator is located; when detecting that the refrigerator is running in a mute period, control the compressor and the fan to adjust the rotating speed to a low gear; when detecting that the refrigerator is running in a warm-up period, acquire the chamber temperature of the refrigerator chamber, judge whether the temperature difference between the chamber temperature and a preset start-up temperature reaches a preset temperature difference threshold, if yes, control the compressor and the fan to increase the rotating speed when detecting that the ambient noise is greater than a preset mute threshold, and if not, control the compressor and the fan to adjust the rotating speed according to the ambient noise. The application can reduce the interference of the operating noise of the refrigerator on the user and meet the normal refrigeration demand of the refrigerator.

Description

Technical Field

[0001] This invention relates to the field of refrigerator technology, and more particularly to a refrigerator and a method for controlling its noise level. Background Technology

[0002] With the technological upgrades of refrigerator electronic components and the iteration of intelligent control methods, the claimed noise levels of refrigerators have been decreasing year by year. To avoid user noise disturbance during quiet periods, existing technology sets specific quiet periods, controlling the compressor and fan speeds to a low-noise operating mode, and then adjusting the speeds according to temperature during non-quiet periods. While this method can reduce refrigerator noise during quiet periods, it may result in the refrigerator's operating noise exceeding ambient noise during other non-quiet periods, causing noise disturbance to the user. Alternatively, the compressor and fan speeds may be too low for the current ambient temperature, causing the refrigerator to fail to reach the target temperature for extended periods when hot and humid foods or other items requiring rapid temperature increases are placed inside, thus failing to meet the refrigerator's normal cooling needs. Summary of the Invention

[0003] This invention provides a refrigerator and a method for controlling its quiet operation, which can reduce the noise of the refrigerator from interfering with the user's operation while meeting the refrigerator's normal cooling needs.

[0004] The refrigerator provided in the first embodiment of the present invention includes:

[0005] The container has internal compartments.

[0006] Refrigeration system, including compressor and fan;

[0007] An ambient noise sensor is used to detect the ambient noise in the environment where the refrigerator is located.

[0008] A compartment temperature sensor is used to detect the compartment temperature.

[0009] Controller, used for:

[0010] The ambient noise is acquired, and the day is pre-divided into a normal cooling period, a quiet period, and a heating period;

[0011] When the refrigerator is detected to be operating during the normal cooling period, the compressor and fan speeds are adjusted according to the ambient noise.

[0012] When the refrigerator is detected to be operating during the quiet period, the compressor and the fan are controlled to adjust their speeds to a preset low level.

[0013] When the refrigerator is detected to be operating during the temperature-pull period, the compartment temperature is acquired, and it is determined whether the temperature difference between the compartment temperature and the preset start-up temperature reaches a preset temperature difference threshold. If so, when the ambient noise is detected to be greater than a preset noise level threshold, the compressor and the fan are controlled to increase their speed. If not, the compressor and the fan are controlled to adjust their speed according to the ambient noise.

[0014] In the refrigerator provided in the first embodiment of the present invention, the controller divides the day into a normal cooling period, a quiet period, and a temperature-raising period. When the refrigerator is operating during the normal cooling period, the controller adjusts the speed of the compressor and the fan according to the ambient noise. When the refrigerator is operating during the quiet period, the controller adjusts the speed of the compressor and the fan to a preset low level. Therefore, the operating noise of the refrigerator can be minimized during quiet periods such as when the user is resting or working, avoiding noise interference to the user. During the normal cooling period, the controller dynamically adjusts the speed of the compressor and the fan according to the ambient noise, keeping the operating noise of the refrigerator as close to the ambient noise level as possible. Simultaneously, when the controller detects that the refrigerator is operating during the temperature-raising period, there is a need for temperature raising, and the environment around the refrigerator is not particularly quiet, it appropriately controls the speed of the compressor and the fan to increase. Therefore, the compartment temperature can be quickly lowered to the set temperature range, shortening the time required to ensure the normal cooling needs of the refrigerator.

[0015] The refrigerator provided in the second embodiment of the present invention includes, in which the step of controlling the compressor and the fan to adjust their speeds based on the ambient noise includes:

[0016] If the detected ambient noise is less than or equal to the preset operating noise upper limit, the compressor and the fan will be controlled to adjust their speeds to the preset low level.

[0017] If the detected ambient noise exceeds the preset operating noise upper limit, the compressor and the fan will be controlled to adjust their speeds to the preset medium level.

[0018] In the refrigerator provided in the second embodiment of the present invention, when the controller detects that the ambient noise is less than or equal to a preset upper limit value for operating noise, it controls the compressor and the fan to adjust their speeds to a preset low level. Therefore, the noise generated by the refrigerator can be reduced in a relatively quiet environment. Simultaneously, when the controller detects that the ambient noise is greater than the preset upper limit value for operating noise, it controls the compressor and the fan to adjust their speeds to a preset medium level. Therefore, the refrigerator's cooling efficiency can be improved in a relatively noisy environment, the temperature-regulating time can be shortened, and the food storage quality can be improved.

[0019] The refrigerator provided in the third embodiment of the present invention, wherein when the ambient noise is detected to be greater than a preset noise threshold, controls the compressor and the fan to increase their rotation speed, includes:

[0020] When the detected ambient noise is greater than a preset silence threshold, it is determined whether the ambient noise is greater than a preset upper limit value for operating noise.

[0021] If the ambient noise is determined to be greater than the preset operating noise upper limit, the compressor and the fan are controlled to increase their speed to the preset highest level.

[0022] If the ambient noise is determined to be less than or equal to the preset upper limit of operating noise, the compressor and the fan are controlled to increase their speed to the preset medium level.

[0023] In the refrigerator provided in the third embodiment of the present invention, when the temperature difference between the compartment temperature and the preset start-up temperature reaches a preset temperature difference threshold during the temperature-raising period, if the controller detects that the ambient noise is greater than the preset operating noise upper limit, it controls the compressor and the fan to increase their speed to the preset highest level; if the controller detects that the ambient noise is greater than the preset quiet threshold and the ambient noise is less than or equal to the preset operating noise upper limit, it controls the compressor and the fan to increase their speed to the preset medium level. Therefore, while avoiding interference from the refrigerator's operating noise to the user, it can shorten the temperature-raising time of the refrigerator to the greatest extent and improve the food storage quality.

[0024] The refrigerator provided in the fourth embodiment of the present invention further includes a door and a door opening detection device; wherein,

[0025] The door opening detection device is connected to the door body and is used to generate a door opening signal when the door body is opened.

[0026] Then, the controller is further configured to:

[0027] If no door opening signal is detected within the pre-set number of days of the warming period, then the day will be divided into several usage periods.

[0028] If a preset number of door opening signals are detected during any of the aforementioned usage periods, then the aforementioned usage period will be designated as a backup period.

[0029] If the number of consecutive days during which a door opening signal is detected reaches the preset number of days within the selected time period, the warming period will be adjusted to a time period from the start time of the selected time period to the second preset time period.

[0030] In the refrigerator provided in the fourth embodiment of the present invention, since the controller dynamically adjusts the temperature-pulling period according to the door opening signal detected at different times, it can reasonably plan the temperature-pulling period of the compressor and fan in combination with the user's usage habits. While avoiding the noise of the refrigerator operation from interfering with the user, it further ensures that when the refrigerator is placed with hot and humid food or other high heat loads, the temperature can be quickly reduced to the preset temperature range, thus ensuring the cooling effect of the refrigerator.

[0031] In the fifth embodiment of the present invention, the refrigerator controller, after detecting that the refrigerator is operating during the temperature-pull period, acquires the compartment temperature, and determines whether the temperature difference between the compartment temperature and the preset start-up temperature reaches a preset temperature difference threshold, is further configured to:

[0032] If it is determined that the temperature difference between the room temperature and the preset start-up temperature reaches the preset temperature difference threshold, then when the ambient noise is detected to be less than or equal to the preset quietness threshold, the compressor and the fan are controlled to adjust their speeds to a preset low level.

[0033] In the refrigerator provided in the fifth embodiment of the present invention, if the controller determines that the temperature difference between the compartment temperature and the preset start-up temperature reaches the preset temperature difference threshold during the temperature-pull-out period, it controls the compressor and the fan to adjust their speed to a preset low level when the ambient noise is detected to be less than or equal to the preset quiet threshold. Therefore, unnecessary high-speed temperature-pull-out time can be avoided, making the temperature-pull-out period of the compressor and the fan more reasonable.

[0034] The sixth embodiment of the present invention provides a method for quiet control of a refrigerator, wherein the refrigerator includes a cabinet, a refrigeration system, an environmental noise sensor, and a compartment temperature sensor; wherein the cabinet has a compartment; the refrigeration system includes a compressor and a fan; the environmental noise sensor is used to detect the environmental noise of the environment in which the refrigerator is located; the compartment temperature sensor is used to detect the compartment temperature; then, the method includes:

[0035] The ambient noise level of the refrigerator's environment is obtained, and the day is pre-divided into normal cooling period, quiet period, and temperature-raising period;

[0036] When the refrigerator is detected to be operating during the normal cooling period, the compressor and fan speeds are adjusted according to the ambient noise.

[0037] When the refrigerator is detected to be operating during the quiet period, the compressor and the fan are controlled to adjust their speeds to a preset low level.

[0038] When the refrigerator is detected to be operating during the temperature-pull period, it is determined whether the temperature difference between the refrigerator compartment temperature and the preset start-up temperature reaches a preset temperature difference threshold. If so, when the ambient noise is detected to be greater than the preset quiet threshold, the compressor and the fan speed are controlled to increase. If not, the compressor and the fan speed are controlled to adjust according to the ambient noise.

[0039] In the refrigerator noise control method provided in the sixth embodiment of the present invention, the method divides a day into a normal cooling period, a quiet period, and a temperature-raising period. When the refrigerator is detected operating during the normal cooling period, the compressor and fan speeds are adjusted according to the ambient noise. When the refrigerator is detected operating during the quiet period, the compressor and fan speeds are adjusted to a preset low setting. Therefore, the refrigerator's operating noise can be minimized during quiet periods such as when the user is resting or working, avoiding noise interference. During the normal cooling period, the compressor and fan speeds are dynamically adjusted according to the ambient noise, keeping the refrigerator's operating noise as close to the ambient noise level as possible. Simultaneously, when the refrigerator is detected operating during the temperature-raising period, where there is a temperature-raising requirement and the environment is not particularly quiet, the compressor and fan speeds are appropriately increased. Therefore, the compartment temperature can be quickly lowered to the set temperature range, shortening the time required to ensure the refrigerator's normal cooling needs.

[0040] The refrigerator noise control method provided in the seventh embodiment of the present invention, wherein controlling the speed of the compressor and the fan to adjust according to the ambient noise includes:

[0041] If the detected ambient noise is less than or equal to the preset operating noise upper limit, the compressor and the fan will be controlled to adjust their speeds to the preset low level.

[0042] If the detected ambient noise exceeds the preset operating noise upper limit, the compressor and the fan will be controlled to adjust their speeds to the preset medium level.

[0043] In the refrigerator noise control method provided in the seventh embodiment of the present invention, when the detected ambient noise is less than or equal to a preset upper limit value for operating noise, the compressor and the fan are controlled to adjust their speeds to a preset low level. Therefore, the noise generated by the refrigerator can be reduced in a relatively quiet environment. Simultaneously, when the controller detects ambient noise greater than the preset upper limit value for operating noise, the compressor and the fan are controlled to adjust their speeds to a preset medium level. Therefore, the refrigerator's cooling efficiency can be improved, the temperature-up time shortened, and the food storage quality improved in a relatively noisy environment.

[0044] The refrigerator noise control method provided in the eighth embodiment of the present invention, wherein when the ambient noise is detected to be greater than a preset noise threshold, the compressor and the fan are controlled to increase their rotation speed, includes:

[0045] When the detected ambient noise is greater than a preset silence threshold, it is determined whether the ambient noise is greater than a preset upper limit value for operating noise.

[0046] If the ambient noise is determined to be greater than the preset operating noise upper limit, the compressor and the fan are controlled to increase their speed to the preset highest level.

[0047] If the ambient noise is determined to be less than or equal to the preset upper limit of operating noise, the compressor and the fan are controlled to increase their speed to the preset medium level.

[0048] In the refrigerator noise control method provided in the eighth embodiment of the present invention, when the temperature difference between the compartment temperature and the preset start-up temperature reaches a preset temperature difference threshold during the temperature-raising period, if the ambient noise is detected to be greater than the preset operating noise upper limit, the compressor and the fan are controlled to increase their speed to the preset highest level; if the ambient noise is detected to be greater than the preset noise threshold and the ambient noise is less than or equal to the preset operating noise upper limit, the compressor and the fan are controlled to increase their speed to the preset medium level. Therefore, while avoiding interference from the refrigerator's operating noise to the user, the temperature-raising time of the refrigerator is shortened to the greatest extent, thereby improving the food storage quality.

[0049] The ninth embodiment of the present invention provides a method for controlling the noise level of a refrigerator, wherein the refrigerator further includes a door and a door opening detection device; wherein the door opening detection device is connected to the door and is used to generate an opening signal when the door is opened; then, the method further includes:

[0050] If no door opening signal is detected within the pre-set number of days of the warming period, then the day will be divided into several usage periods.

[0051] If a preset number of door opening signals are detected during any of the aforementioned usage periods, then the aforementioned usage period will be designated as a backup period.

[0052] If the number of consecutive days during which a door opening signal is detected reaches the preset number of days within the selected time period, the warming period will be adjusted to a time period from the start time of the selected time period to the second preset time period.

[0053] In the refrigerator silent control method provided in the ninth embodiment of the present invention, since this embodiment dynamically adjusts the temperature-raising period according to the door opening signal detected at different times, it can reasonably plan the temperature-raising period of the compressor and fan in combination with the user's usage habits. While avoiding the refrigerator's operating noise from interfering with the user, it further ensures that when the refrigerator is placed with hot and humid food or other high heat loads, the temperature can be quickly reduced to the preset temperature range, thus ensuring the refrigerator's cooling effect.

[0054] The refrigerator silent control method provided in the tenth embodiment of the present invention, after obtaining the compartment temperature and determining whether the temperature difference between the compartment temperature and the preset start-up temperature reaches a preset temperature difference threshold when the refrigerator is detected to be operating during the temperature-pulling period, the method further includes:

[0055] If it is determined that the temperature difference between the room temperature and the preset start-up temperature reaches the preset temperature difference threshold, then when the ambient noise is detected to be less than or equal to the preset quietness threshold, the compressor and the fan are controlled to adjust their speeds to a preset low level.

[0056] In the refrigerator noise control method provided in the tenth embodiment of the present invention, if it is determined that the temperature difference between the compartment temperature and the preset start-up temperature reaches the preset temperature difference threshold during the temperature pulling period, the compressor and the fan are controlled to adjust their speed to a preset low level when the ambient noise is detected to be less than or equal to the preset noise threshold. Therefore, unnecessary high-speed temperature pulling time can be avoided, making the temperature pulling period of the compressor and the fan more reasonable. Attached Figure Description

[0057] Figure 1 This is a schematic diagram of the structure of a refrigerator provided in an embodiment of the present invention.

[0058] Figure 2 This is a schematic diagram of the structure of another refrigerator provided in one embodiment of the present invention.

[0059] Figure 3 This is a schematic diagram of the refrigeration system of a refrigerator according to an embodiment of the present invention.

[0060] Figure 4 This is a structural block diagram of a first refrigerator control system provided in an embodiment of the present invention.

[0061] Figure 5 This is a flowchart illustrating the process of a controller performing silent control according to an embodiment of the present invention.

[0062] Figure 6 This is a flowchart illustrating the operation of a controller during normal cooling periods, according to an embodiment of the present invention.

[0063] Figure 7 This is a structural block diagram of a second refrigerator control system provided in an embodiment of the present invention.

[0064] Figure 8 This is a flowchart illustrating the operation of a controller during the temperature-raising period according to an embodiment of the present invention.

[0065] Figure 9 This is a structural block diagram of a third refrigerator control system provided in an embodiment of the present invention.

[0066] Figure 10 This is a flowchart illustrating a method for controlling the noise level of a refrigerator according to an embodiment of the present invention. Detailed Implementation

[0067] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0068] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0069] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "multiple" means two or more.

[0070] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0071] See Figure 1This is a schematic diagram of the structure of a refrigerator provided in an embodiment of the present invention.

[0072] The refrigerator provided in this embodiment of the invention includes a cabinet 10. The cabinet 10 has at least one compartment. Specifically, as shown below... Figure 2 As shown, the refrigerator in this embodiment has an approximately rectangular shape. The refrigerator includes a cabinet 10 defining a storage space. The cabinet 10 has at least one compartment, and each compartment has one or more doors 200 at its opening. For example, in... Figure 2 The upper compartment is a refrigerator compartment with a double door. The door 200 includes a door shell 210 on the outside of the cabinet 10, a door inner liner 220 on the inside of the cabinet 10, an upper end cover 230, a lower end cover 240, and an insulation layer between the door shell 210, door inner liner 220, upper end cover 230, and lower end cover 240. Typically, the insulation layer is filled with foam material. The compartments can be configured as refrigerator compartments, freezer compartments, or variable temperature compartments, depending on their purpose. The refrigerator also includes a refrigeration system for cooling the compartments within the cabinet 10. In one specific embodiment, see [reference needed]. Figure 3 The refrigeration system includes a compressor 1, a condenser 2, an anti-condensation tube 3, a dryer filter 4, a capillary tube 5, an evaporator 6, and a gas-liquid separator 7. The working process of the refrigeration system includes a compression process, a condensation process, a throttling process, and an evaporation process. The compression process is as follows: Compressor 1 starts working, and low-temperature, low-pressure refrigerant is drawn into compressor 1. It is compressed into high-temperature, high-pressure superheated gas in the cylinder of compressor 1 and then discharged into condenser 2. The condensation process is as follows: The high-temperature, high-pressure refrigerant gas dissipates heat through condenser 2, and its temperature continuously decreases, gradually cooling into room-temperature, high-pressure saturated vapor, and further cooling into saturated liquid. The temperature at this point no longer decreases; this temperature is called the condensation temperature. The pressure of the refrigerant remains almost constant throughout the condensation process. The throttling process is as follows: The saturated liquid refrigerant after condensation flows into capillary tube 5 after being filtered by dryer filter 4 to remove moisture and impurities. Through capillary tube 5, it undergoes throttling and pressure reduction, turning the refrigerant into room-temperature, low-pressure wet vapor. The evaporation process is as follows: The room-temperature, low-pressure wet vapor begins to absorb heat and vaporize in evaporator 6, not only lowering the temperature of evaporator 6 and its surroundings but also turning the refrigerant into a low-temperature, low-pressure gas. The refrigerant exiting evaporator 6 passes through gas-liquid separator 7 and returns to compressor 1, repeating the above process to transfer heat from inside the refrigerator to the outside air, thus achieving the purpose of refrigeration.

[0073] See Figure 1In this embodiment, the refrigeration system further includes a fan 20; wherein the fan 20 operates to deliver air to the compartment. The refrigerator includes an ambient noise sensor 30. Specifically, the ambient noise sensor 30 is located on the top of the refrigerator body; wherein, to avoid interference from the noise generated by the refrigerator, the ambient noise sensor 30 may be located inside the hinge cover on the top of the refrigerator, or on both sides of the door. The refrigerator also includes a compartment temperature sensor 40, which is used to detect the compartment temperature.

[0074] In this embodiment, the refrigerator further includes a controller 50; wherein, as shown in the figure... Figure 4 As shown, controller 50 is connected to compressor 1 and fan 20 to control compressor 1 and fan 20. Controller 50 is connected to ambient noise sensor 30 to receive ambient noise detected by ambient noise sensor 30. Controller 50 is connected to room temperature sensor 40 to receive room temperature detected by room temperature sensor 40. Controller 50 is specifically used for:

[0075] The ambient noise is acquired, and the day is pre-divided into a normal cooling period, a quiet period, and a heating period;

[0076] When the refrigerator is detected to be operating during the normal cooling period, the compressor 1 and fan 20 are controlled to adjust their speeds according to the ambient noise.

[0077] When the refrigerator is detected to be operating during the quiet period, the compressor 1 and fan 20 are controlled to adjust their speeds to a preset low level.

[0078] When the refrigerator is detected to be operating during the temperature-pull period, the compartment temperature is obtained, and it is determined whether the temperature difference between the compartment temperature and the preset start-up temperature reaches the preset temperature difference threshold. If so, when the ambient noise is detected to be greater than the preset quiet threshold, the compressor 1 and fan 20 are controlled to increase their speed. If not, the compressor 1 and fan 20 are controlled to adjust their speed according to the ambient noise.

[0079] The refrigerator provided in this embodiment of the invention divides a day into a normal cooling period, a quiet period, and a temperature-raising period. When the refrigerator is operating during the normal cooling period, the controller 50 adjusts the speed of the compressor 1 and fan 20 according to the ambient noise level. When the refrigerator is operating during the quiet period, the controller adjusts the speed of the compressor 1 and fan 20 to a preset low setting. Therefore, during quiet periods when users need to rest or work, the refrigerator's operating noise can be minimized, avoiding noise interference to users. During the normal cooling period, the controller dynamically adjusts the speed of the compressor 1 and fan 20 according to the ambient noise level, keeping the refrigerator's operating noise as close to the ambient noise level as possible. Simultaneously, when the controller detects that the refrigerator is operating during the temperature-raising period, there is a need for temperature raising, and the environment around the refrigerator is not particularly quiet, the controller appropriately increases the speed of the compressor 1 and fan 20. Therefore, the compartment temperature can be quickly lowered to the set temperature range, shortening the time required to ensure the refrigerator's normal cooling needs.

[0080] It should be noted that the quiet periods refer to the times when the user needs the refrigerator to remain quiet, such as during rest or work periods, and are pre-configured by the manufacturer or set by the user. The temperature-reducing periods refer to the high-heat-load periods when the refrigerator is filled with hot or humid food and needs to be quickly cooled to a preset temperature range, and are also pre-configured by the manufacturer or set by the user. The normal cooling periods are the times of day other than the quiet and temperature-reducing periods. Furthermore, considering the refrigerator's performance and the needs of food storage, the duration of the quiet and temperature-reducing periods is limited. Preferably, the duration of the quiet and temperature-reducing periods does not exceed 3 hours.

[0081] Understandably, when the temperature difference between the compartment temperature and the preset start-up temperature reaches a preset temperature difference threshold, it indicates that the refrigerator needs to raise the temperature, requiring an increase in the speed of compressor 1 and fan 20 to achieve rapid temperature increase. If the temperature difference between the compartment temperature and the preset start-up temperature is less than the preset temperature difference threshold, it indicates that the refrigerator does not need to raise the temperature, and the control mode of adjusting the speed of compressor 1 and fan 20 according to the ambient noise can be used to maintain normal cooling. Specifically, the temperature difference threshold is 3°C to avoid excessive differences between the actual temperature of the refrigerator compartment and the set temperature. Furthermore, it should be noted that the preset start-up temperature is configured based on the user-set compartment temperature.

[0082] It's worth noting that considering the rapid temperature increase of the refrigerator and the high heat load caused by placing hot and humid food inside, the compressor 1 and fan 20 inevitably need to operate at high frequency. The noise level of the compressor 1 and fan 20 during high-frequency operation is significantly higher than that during low-frequency operation when the temperature is stable. If this occurs during periods when users require quiet operation, it can easily lead to user complaints. Users generally don't expect the refrigerator to be completely silent 24 hours a day, and the ambient noise level in a user's home is not constant; there will inevitably be periods of high ambient noise. Therefore, the compressor speed and fan speed can be dynamically adjusted according to the ambient noise level, allowing the refrigerator to operate at high speed during periods of high ambient noise. This satisfies the refrigerator's normal cooling needs while maximizing the user experience. It should be noted that high-frequency operation corresponds to high-speed operation, where speed = frequency × C; where C is a preset constant, typically 30.

[0083] For example, combined Figure 5 The diagram shows a flowchart of a controller 50 performing silent control according to an embodiment of the present invention. The silent control process of the controller 50 is as follows: The ambient noise of the refrigerator's environment is acquired, and the day is pre-divided into a normal cooling period, a silent period, and a temperature-raising period (step S11), then step S12 is executed; it is determined whether the refrigerator is operating during the normal cooling period (S12). If yes, step S121 is executed; otherwise, step S13 is executed; the compressor 1 and fan 20 are adjusted according to the ambient noise (step S121), and then the current operating period of the refrigerator is monitored; it is determined whether the refrigerator is operating during the silent period (step S13). If yes, step S13 is executed. 1. Otherwise, proceed to step S14; control the compressor 1 and fan 20 to adjust their speeds to the preset low level (step S131), and then continue monitoring the current operating period of the refrigerator; determine that the refrigerator is operating in the temperature-pulling period (step S14), and then proceed to step S141; obtain the compartment temperature of the refrigerator compartment (step S141), and then proceed to step S142; determine whether the temperature difference between the compartment temperature and the preset start-up temperature reaches the preset temperature difference threshold (step S142), if yes, proceed to step S143, otherwise proceed to step S144; when the ambient noise is detected to be greater than the preset quiet threshold, control the compressor 1 and fan 20 to increase their speeds (step S143), and end. Control the compressor 1 and fan 20 to adjust their speeds according to the ambient noise (step S144), and then end.

[0084] In one specific embodiment, the step of adjusting the speed of compressor 1 and fan 20 according to the ambient noise includes:

[0085] If the detected ambient noise is less than or equal to the preset operating noise upper limit, the compressor 1 and fan 20 will be controlled to adjust their speeds to the preset low level.

[0086] If the detected ambient noise exceeds the preset operating noise upper limit, the compressor 1 and fan 20 will be controlled to adjust their speeds to the preset medium level.

[0087] In the refrigerator provided in this embodiment, when the controller 50 detects that the ambient noise is less than or equal to the preset upper limit of operating noise, it controls the compressor 1 and the fan 20 to adjust their speeds to a preset low level. Therefore, the noise generated by the refrigerator can be reduced in a relatively quiet environment. Simultaneously, when the controller 50 detects that the ambient noise is greater than the preset upper limit of operating noise, it controls the compressor 1 and the fan 20 to adjust their speeds to a preset medium level. Therefore, the refrigerator's cooling efficiency can be improved in a relatively noisy environment, the temperature-regulating time can be shortened, and the food storage quality can be improved.

[0088] It is worth noting that the controller 50 is pre-configured with several noise ranges, and each noise range is configured with a corresponding fan speed and compressor speed. Specifically, the controller 50 pre-configures low, medium, and high compressor speeds, as well as low, medium, and high fan speeds for the compressor 1; wherein the low speed is lower than the medium speed, and the medium speed is lower than the high speed. Of course, the low speeds of the compressor 1 and the fan 20 can be the same or different, the medium speeds of the compressor 1 and the fan 20 can be the same or different, and the high speeds of the compressor 1 and the fan 20 can be the same or different; these are not limited here.

[0089] Furthermore, the fan speed and compressor speed configured for each noise range should be based on the operating noise of compressor 1 and fan 20 at different speeds, so as to ensure that the operating noise corresponding to the fan speed and compressor speed configured for each noise range is not greater than the noise value of that noise range, or that the operating noise of the refrigerator is not particularly noticeable in that noise range. For example, if the operating noise of compressor 1 and fan 20 at the highest speed in the refrigerator of this embodiment is 40 decibels, then the preset upper limit of operating noise is 40 decibels.

[0090] For example, suppose that when the ambient noise is less than or equal to the preset upper limit of operating noise, the corresponding compressor speed is a low-speed compressor speed, and the corresponding fan speed is a low-speed fan speed; when the ambient noise is greater than the preset upper limit of operating noise, the corresponding compressor speed is a medium-speed compressor speed, and the corresponding fan speed is a medium-speed fan speed. Then, combined with... Figure 6The diagram shows the workflow of a controller 50 during normal cooling hours according to an embodiment of the present invention. The silent control process of the controller 50 during normal cooling hours is as follows: The ambient noise of the refrigerator's environment is acquired (step S21), and then step S22 is executed; the refrigerator is detected to be operating during normal cooling hours (step S22), and then step S23 is executed; it is determined whether the ambient noise exceeds a preset upper limit for operating noise (S23). If yes, step S25 is executed; otherwise, step S24 is executed; the compressor 1 and fan 20 are controlled to adjust their speeds to a preset low level (step S24), and the process ends. The compressor 1 and fan 20 are controlled to adjust their speeds to a preset medium level (step S35), and the process ends.

[0091] As one specific embodiment, the step of controlling the compressor 1 and fan 20 to increase their speed when the detected ambient noise exceeds a preset noise threshold includes:

[0092] When the detected ambient noise is greater than a preset silence threshold, it is determined whether the ambient noise is greater than a preset upper limit value for operating noise.

[0093] If it is determined that the ambient noise is greater than the preset operating noise upper limit, the compressor 1 and the fan 20 are controlled to increase their speed to the preset high level.

[0094] If the ambient noise is determined to be less than or equal to the preset upper limit of operating noise, the compressor 1 and fan 20 are controlled to increase their speed to the preset medium level.

[0095] In the refrigerator provided in this embodiment, when the temperature difference between the compartment temperature and the preset start-up temperature reaches a preset temperature difference threshold during the temperature-raising period, if the controller 50 detects that the ambient noise is greater than the preset upper limit of operating noise, it controls the compressor 1 and the fan 20 to increase their speed to a preset high level; if the ambient noise is greater than the preset quiet threshold and the ambient noise is less than or equal to the preset upper limit of operating noise, it controls the compressor 1 and the fan 20 to increase their speed to a preset medium level. Therefore, while avoiding interference from the refrigerator's operating noise to the user, the temperature-raising time of the refrigerator can be shortened to the greatest extent, thereby improving the quality of food storage.

[0096] Specifically, the preset noise threshold is 37 decibels, and the preset operating noise upper limit is 40 decibels. The preset noise threshold can be adjusted based on the operating noise of the refrigerator's compressor 1 and fan 20 at low speeds, and the preset operating noise upper limit can be adjusted based on the operating noise of the refrigerator's compressor 1 and fan 20 at high speeds, so that the refrigerator's operating noise is as low as possible compared to the ambient noise, thereby avoiding any impact on the user and improving the user experience. For example, assuming the operating noise of the refrigerator's compressor 1 and fan 20 at low speeds is 37 decibels, then the preset noise threshold is 37 decibels; assuming the operating noise of the refrigerator's compressor 1 and fan 20 at high speeds is 40 decibels, then the preset operating noise upper limit is 40 decibels.

[0097] See Figure 7 Furthermore, the refrigerator also includes a door opening detection device 60; wherein the door opening detection device 60 is connected to the door body 200 and is used to generate an opening signal when the door body 200 is opened. The controller 50 is connected to the door opening detection device 60 to receive the opening signal generated by the door opening detection device 60. The controller 50 is further used to:

[0098] If no door opening signal is detected within the pre-set number of days of the warming period, then the day will be divided into several usage periods.

[0099] If a preset number of door opening signals are detected during any of the aforementioned usage periods, then the aforementioned usage period will be designated as a backup period.

[0100] If the number of consecutive days during which a door opening signal is detected reaches the preset number of days within the selected time period, the warming period will be adjusted to a time period from the start time of the selected time period to the second preset time period.

[0101] In the refrigerator provided in this embodiment, since the controller 50 dynamically adjusts the temperature-pull-out period according to the door opening signal detected at different times, it can reasonably plan the temperature-pull-out period of the compressor 1 and the fan 20 in combination with the user's usage habits. While avoiding the noise of the refrigerator operation from interfering with the user, it further ensures that when the refrigerator is placed with hot and humid food or other high heat loads, the temperature can be quickly reduced to the preset temperature range, thus ensuring the cooling effect of the refrigerator.

[0102] Specifically, the preset number of days is 7 days, the preset number of times is 2, the first preset duration is 0.5 hours, and the second preset duration is 3 hours. It should be noted that the preset number of days, the preset number of times, the first preset duration, and the second preset duration can be adjusted appropriately based on the actual operating conditions of the refrigerator.

[0103] Understandably, the aforementioned temperature-pull-up period refers to the period during which, after the refrigerator is filled with hot and humid food or the door 200 is frequently opened, external heat is introduced, causing the refrigerator compartment temperature to rise and the heat load to increase. This necessitates increasing the speed of the compressor 1 and fan 20 to rapidly lower the compartment temperature to a preset range. The division of the temperature-pull-up period is automatically adjusted based on user habits. Typically, the refrigerator is most likely to be filled with hot and humid food or have the door 200 frequently opened during the user's mealtimes. Therefore, the temperature-pull-up period can be determined based on the user's mealtime or the number of times the refrigerator door is opened during any given time period. For example, based on the door opening signal detected by the door opening detection device 60 and the network clock, the user's mealtime is determined, and the default temperature-pull-up period is 0.5 hours to 3 hours after breakfast and dinner. For example, a preset period of 7 days, a preset number of times, a first preset duration of 0.5 hours, and a second preset duration of 3 hours are used. Assuming meal times are set according to local dietary habits, such as 7:00-8:30 for breakfast and 11:30-13:30 for lunch, these times will be continuously adjusted based on door opening / closing signals. For example, if a user hasn't opened the refrigerator door during the 7:00-8:30 breakfast period (door 200 remains closed) for more than a week, and then detects two or more door opening signals between 9:00-10:30 (door 200 opened two or more times), and this habit has also persisted for more than a week, then the breakfast period will be adjusted to 9:00-10:30, and the temperature-regulating period will be adjusted to 9:30-12:30. If the door is never opened during the breakfast period, there is no heat and humidity load introduced (e.g., from placing large amounts of food or frequently opening door 200 to introduce heat), and therefore no temperature-regulating period. This constantly adjusted temperature-up period better adapts to user habits, rather than being fixed at a single time. This avoids noise complaints caused by the refrigerator running at high speed when users need quiet operation. At the same time, it can shorten the temperature-up time during mealtimes or other times when heat and humidity loads may be introduced, thus ensuring the refrigerator's cooling effect.

[0104] As one specific embodiment, after the controller 50 detects that the refrigerator is operating during the temperature-pull period, acquires the compartment temperature, and determines whether the temperature difference between the compartment temperature and the preset start-up temperature reaches a preset temperature difference threshold, it is further configured to:

[0105] If it is determined that the temperature difference between the room temperature and the preset start-up temperature does not reach the preset temperature difference threshold, then when the ambient noise is detected to be less than or equal to the preset quietness threshold, the compressor 1 and the fan 20 are controlled to adjust their speeds to a preset low level.

[0106] In the refrigerator provided in this embodiment, if the controller 50 determines that the temperature difference between the compartment temperature and the preset start-up temperature reaches the preset temperature difference threshold during the temperature-pull-out period, it controls the compressor 1 and the fan 20 to adjust their speed to a preset low level when the ambient noise is detected to be less than or equal to the preset quietness threshold. Therefore, unnecessary high-speed temperature-pull-out time can be avoided, making the temperature-pull-out period of the compressor 1 and the fan 20 more reasonable.

[0107] For example, suppose that when the ambient noise is less than or equal to the preset upper limit of operating noise, the corresponding compressor speed is the low-speed compressor speed, and the corresponding fan speed is the low-speed fan speed; when the ambient noise is greater than the preset upper limit of operating noise, the corresponding compressor speed is the medium-speed compressor speed, and the corresponding fan speed is the medium-speed fan speed; the medium-speed is higher than the low-speed speed, and the high-speed is higher than the medium-speed speed. Then, combined with... Figure 8 The diagram shows the workflow of a controller 50 during the temperature-pull-out period according to an embodiment of the present invention. The silent control process of the controller 50 during the temperature-pull-out period is as follows: The ambient noise of the refrigerator's environment is acquired (step S31), and then step S32 is executed; the refrigerator is detected to be operating during the temperature-pull-out period (step S32), and then step S33 is executed; the compartment temperature of the refrigerator compartment is acquired (step S33), and then step S34 is executed; it is determined whether the temperature difference between the compartment temperature and the preset start-up temperature reaches a preset temperature difference threshold (step S34). If yes, step S35 is executed; otherwise, step S36 is executed; it is determined whether the ambient noise is greater than a preset silent threshold (step S35). If yes, step S351 is executed; otherwise, step S352 is executed; it is determined whether the ambient noise is greater than a preset operating noise upper limit (step S351). If yes, step S353 is executed; otherwise, step S354 is executed; the compressor 1 and fan 20 are controlled to increase their speed to a preset low level (step S352), and the process ends. Control compressor 1 and fan 20 to increase their speed to the preset high setting (step S353), then end. Control compressor 1 and fan 20 to increase their speed to the preset medium setting (step S354), then end. Determine if the ambient noise exceeds the preset operating noise upper limit (step S36). If yes, proceed to step S361; otherwise, proceed to step S362. Control compressor 1 and fan 20 to adjust their speed to the preset medium setting (step S261), then end. Control compressor 1 and fan 20 to adjust their speed to the preset low setting (step S362), then end.

[0108] For example, taking a preset noise threshold of 37 decibels and a preset operating noise upper limit of 40 decibels as an example, if the ambient noise is below 37 decibels, it indicates that the refrigerator is in a very quiet environment. If the refrigerator's operating noise is significantly higher than the ambient noise, it will inevitably affect the user and may even lead to a quality complaint. Therefore, when the refrigerator is in a quiet environment, the compressor 1 and fan 20 need to be controlled to operate at low speeds to ensure low-noise operation. If the ambient noise is between 37 and 40 decibels, and it is not currently during the temperature-boosting period (i.e., when the refrigerator does not require temperature boosting), the compressor 1 and fan 20 should be controlled to operate at low speeds to ensure low-noise operation. If the ambient noise is 40 decibels or higher, it indicates that the refrigerator is in a very noisy environment, exceeding the noise level required for high-frequency operation. Therefore, during non-temperature-boosting periods, the speeds of the compressor 1 and fan 20 should be appropriately increased to quickly bring the compartment temperature to the set temperature range, ensuring the refrigerator's cooling effect and improving food storage quality.

[0109] Further, see Figure 9 The refrigerator also includes a communication module 70 and a display device 80. The communication module 70 enables the refrigerator to communicate with the cloud or a mobile terminal, and also connects the refrigerator to a network to obtain the network clock time. The display device 80 provides a user interface for setting silent and temperature-controlled periods. In practice, the user can set the silent and temperature-controlled periods through a mobile terminal bound to the refrigerator's communication module 70. It is understood that the mobile terminal should have application software corresponding to the refrigerator installed. Specifically, the communication module 70 is a Wi-Fi module.

[0110] See Figure 10 This is a flowchart illustrating a method for controlling the noise level of a refrigerator according to an embodiment of the present invention.

[0111] The refrigerator noise control method provided in this embodiment includes a refrigerator body, a refrigeration system, an environmental noise sensor, and a compartment temperature sensor; wherein, the refrigerator body has a compartment; the refrigeration system includes a compressor and a fan; the environmental noise sensor is used to detect the environmental noise of the environment in which the refrigerator is located; the compartment temperature sensor is used to detect the compartment temperature; then, the method includes:

[0112] S1. Obtain the ambient noise level of the refrigerator's environment and pre-divide the day into normal cooling period, silent period and temperature-raising period;

[0113] S2. When the refrigerator is detected to be operating during the normal cooling period, the compressor and fan speeds are adjusted according to the ambient noise.

[0114] S3. When it is detected that the refrigerator is operating during the silent period, control the compressor and the fan to adjust their speed to a preset low level;

[0115] S4. When the refrigerator is detected to be operating during the temperature-pulling period, the compartment temperature of the refrigerator compartment is obtained, and it is determined whether the temperature difference between the compartment temperature and the preset start-up temperature reaches the preset temperature difference threshold. If so, when the ambient noise is detected to be greater than the preset quiet threshold, the compressor and the fan are controlled to increase their speed. If not, the compressor and the fan are controlled to adjust their speed according to the ambient noise.

[0116] In the refrigerator noise control method provided in this embodiment, the method divides a day into a normal cooling period, a quiet period, and a temperature-lifting period. When the refrigerator is detected operating during the normal cooling period, the compressor and fan speeds are adjusted according to the ambient noise. When the refrigerator is detected operating during the quiet period, the compressor and fan speeds are adjusted to a preset low setting. Therefore, the refrigerator's operating noise can be minimized during quiet periods such as when the user is resting or working, avoiding noise interference. During the normal cooling period, the compressor and fan speeds are dynamically adjusted according to the ambient noise, keeping the refrigerator's operating noise as close to the ambient noise level as possible. Simultaneously, when the refrigerator is detected operating during the temperature-lifting period, when there is a need for temperature lifting, and when the environment around the refrigerator is not particularly quiet, the compressor and fan speeds are appropriately increased. Therefore, the compartment temperature can be quickly lowered to the set temperature range, shortening the time required to ensure the refrigerator's normal cooling needs.

[0117] As one specific embodiment, the step of controlling the compressor and the fan to adjust their speeds based on the ambient noise includes:

[0118] If the detected ambient noise is less than or equal to the preset operating noise upper limit, the compressor and the fan will adjust their speed to the preset low level.

[0119] If the detected ambient noise exceeds the preset operating noise upper limit, the compressor and the fan will be controlled to adjust their speeds to the preset medium level.

[0120] In the refrigerator noise control method provided in this embodiment, when the detected ambient noise is less than or equal to a preset operating noise upper limit, the compressor and fan are controlled to adjust their speeds to a preset low level. Therefore, the noise generated by the refrigerator can be reduced in a relatively quiet environment. Simultaneously, when the controller detects ambient noise greater than the preset operating noise upper limit, the compressor and fan are controlled to adjust their speeds to a preset medium level. Therefore, the refrigerator's cooling efficiency can be improved, the temperature-up time shortened, and the food storage quality enhanced in relatively noisy environments.

[0121] Furthermore, the step of controlling the compressor and the fan to increase their speed when the detected ambient noise exceeds a preset noise threshold includes:

[0122] When the detected ambient noise is greater than a preset silence threshold, it is determined whether the ambient noise is greater than a preset upper limit value for operating noise.

[0123] If the ambient noise is determined to be greater than the preset operating noise upper limit, the compressor and the fan are controlled to increase their speed to the preset highest level.

[0124] If the ambient noise is determined to be less than or equal to the preset upper limit of operating noise, the compressor and the fan are controlled to increase their speed to the preset medium level.

[0125] In the refrigerator noise control method provided in this embodiment, when the temperature difference between the compartment temperature and the preset start-up temperature reaches a preset temperature difference threshold during the temperature-raising period, if the detected ambient noise is greater than the preset operating noise upper limit, the compressor and the fan are controlled to increase their speed to the preset highest level; if the detected ambient noise is greater than the preset noise threshold and the ambient noise is less than or equal to the preset operating noise upper limit, the compressor and the fan are controlled to increase their speed to the preset medium level. Therefore, while avoiding interference from the refrigerator's operating noise to the user, the temperature-raising time of the refrigerator is shortened to the greatest extent, thereby improving the quality of food storage.

[0126] In one specific embodiment, the refrigerator further includes a door and a door opening detection device; wherein the door opening detection device is connected to the door and is used to generate an opening signal when the door is opened; then, the method further includes:

[0127] If no door opening signal is detected within the pre-set number of days of the warming period, then the day will be divided into several usage periods.

[0128] If a preset number of door opening signals are detected during any of the aforementioned usage periods, then the aforementioned usage period will be designated as a backup period.

[0129] If the number of consecutive days during which a door opening signal is detected reaches the preset number of days within the selected time period, the warming period will be adjusted to a time period from the start time of the selected time period to the second preset time period.

[0130] In the refrigerator silent control method provided in this embodiment, since this embodiment dynamically adjusts the temperature-up period according to the door opening signal detected at different times, it can reasonably plan the temperature-up period of the compressor and fan in combination with the user's usage habits. While avoiding the refrigerator's operating noise from interfering with the user, it further ensures that when the refrigerator is placed with hot and humid food or other high heat loads, the temperature can be quickly reduced to the preset temperature range, thus ensuring the refrigerator's cooling effect.

[0131] Specifically, after detecting that the refrigerator is operating during the temperature-pull period, acquiring the compartment temperature, and determining whether the temperature difference between the compartment temperature and the preset start-up temperature reaches a preset temperature difference threshold, the method further includes:

[0132] If it is determined that the temperature difference between the room temperature and the preset start-up temperature does not reach the preset temperature difference threshold, then when the ambient noise is detected to be less than or equal to the preset quiet threshold, the compressor and the fan are controlled to adjust their speeds to a preset low level.

[0133] In the refrigerator noise control method provided in this embodiment, if it is determined that the temperature difference between the compartment temperature and the preset start-up temperature reaches the preset temperature difference threshold during the temperature pulling period, the compressor and the fan are controlled to adjust their speeds to a preset low level when the ambient noise is detected to be less than or equal to the preset noise threshold. Therefore, unnecessary high-speed temperature pulling time can be avoided, making the temperature pulling period of the compressor and the fan more reasonable.

[0134] The specific description of the refrigerator's silent control method provided in this embodiment can be found in the specific descriptions of the various embodiments of the refrigerator described above, and will not be repeated here.

[0135] It should be noted that the device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Furthermore, in the accompanying drawings of the device embodiments provided by this invention, the connection relationships between modules indicate that they have communication connections, which can be specifically implemented as one or more communication buses or signal lines. Those skilled in the art can understand and implement this without any creative effort.

[0136] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A refrigerator, characterized in that, include: The container has internal compartments. Refrigeration system, including compressor and fan; An ambient noise sensor is used to detect the ambient noise in the environment where the refrigerator is located. A compartment temperature sensor is used to detect the compartment temperature. Controller, used for: The ambient noise is acquired, and the day is pre-divided into a normal cooling period, a quiet period, and a heating period; When the refrigerator is detected to be operating during the normal cooling period, the compressor and fan speeds are adjusted according to the ambient noise. When the refrigerator is detected to be operating during the quiet period, the compressor and the fan are controlled to adjust their speeds to a preset low level. When the refrigerator is detected to be operating during the temperature-pull period, the compartment temperature is acquired, and it is determined whether the temperature difference between the compartment temperature and the preset start-up temperature reaches a preset temperature difference threshold. If so, when the ambient noise is detected to be greater than a preset noise level threshold, the compressor and the fan are controlled to increase their speed. If not, the compressor and the fan are controlled to adjust their speed according to the ambient noise.

2. The refrigerator as described in claim 1, characterized in that, The step of controlling the compressor and the fan speed according to the ambient noise includes: If the detected ambient noise is less than or equal to the preset operating noise upper limit, the compressor and the fan will be controlled to adjust their speeds to the preset low level. If the detected ambient noise exceeds the preset operating noise upper limit, the compressor and the fan will be controlled to adjust their speeds to the preset medium level.

3. The refrigerator as described in claim 2, characterized in that, When the ambient noise is detected to be greater than a preset noise threshold, controlling the compressor and the fan to increase their speed includes: When the detected ambient noise is greater than a preset silence threshold, it is determined whether the ambient noise is greater than a preset upper limit value for operating noise. If the ambient noise is determined to be greater than the preset operating noise upper limit, the compressor and the fan are controlled to increase their speed to the preset highest level. If the ambient noise is determined to be less than or equal to the preset upper limit of operating noise, the compressor and the fan are controlled to increase their speed to the preset medium level.

4. The refrigerator as described in claim 1, characterized in that, The refrigerator also includes a door and a door opening detection device; wherein... The door opening detection device is connected to the door body and is used to generate a door opening signal when the door body is opened. Then, the controller is further configured to: If no door opening signal is detected within the pre-set number of days of the warming period, then the day will be divided into several usage periods. If a preset number of door opening signals are detected during any of the aforementioned usage periods, then the aforementioned usage period will be designated as a backup period. If the number of consecutive days during which a door opening signal is detected reaches the preset number of days within the selected time period, the warming period will be adjusted to a time period from the start time of the selected time period to the second preset time period.

5. The refrigerator as described in claim 1, characterized in that, After the controller detects that the refrigerator is operating during the temperature-pull period, acquires the compartment temperature, and determines whether the temperature difference between the compartment temperature and the preset start-up temperature reaches a preset temperature difference threshold, it is further configured to: If it is determined that the temperature difference between the room temperature and the preset start-up temperature reaches the preset temperature difference threshold, then when the ambient noise is detected to be less than or equal to the preset quietness threshold, the compressor and the fan are controlled to adjust their speeds to a preset low level.

6. A method for controlling the quiet operation of a refrigerator, characterized in that, The refrigerator includes a cabinet, a refrigeration system, an environmental noise sensor, and a compartment temperature sensor; wherein, the cabinet contains a compartment; the refrigeration system includes a compressor and a fan; the environmental noise sensor is used to detect the environmental noise of the environment in which the refrigerator is located; the compartment temperature sensor is used to detect the compartment temperature; therefore, the method includes: The ambient noise level of the refrigerator's environment is obtained, and the day is pre-divided into normal cooling period, quiet period, and temperature-raising period; When the refrigerator is detected to be operating during the normal cooling period, the compressor and fan speeds are adjusted according to the ambient noise. When the refrigerator is detected to be operating during the quiet period, the compressor and the fan are controlled to adjust their speeds to a preset low level. When the refrigerator is detected to be operating during the temperature-pull period, it is determined whether the temperature difference between the refrigerator compartment temperature and the preset start-up temperature reaches a preset temperature difference threshold. If so, when the ambient noise is detected to be greater than the preset quiet threshold, the compressor and the fan speed are controlled to increase. If not, the compressor and the fan speed are controlled to adjust according to the ambient noise.

7. The method for controlling the quiet operation of a refrigerator as described in claim 6, characterized in that, The step of controlling the compressor and the fan speed according to the ambient noise includes: If the detected ambient noise is less than or equal to the preset operating noise upper limit, the compressor and the fan will be controlled to adjust their speeds to the preset low level. If the detected ambient noise exceeds the preset operating noise upper limit, the compressor and the fan will be controlled to adjust their speeds to the preset medium level.

8. The method for controlling the quiet operation of a refrigerator as described in claim 7, characterized in that, When the ambient noise is detected to be greater than a preset noise threshold, controlling the compressor and the fan to increase their speed includes: When the detected ambient noise is greater than a preset silence threshold, it is determined whether the ambient noise is greater than a preset upper limit value for operating noise. If the ambient noise is determined to be greater than the preset operating noise upper limit, the compressor and the fan are controlled to increase their speed to the preset highest level. If the ambient noise is determined to be less than or equal to the preset upper limit of operating noise, the compressor and the fan are controlled to increase their speed to the preset medium level.

9. The method for controlling the quiet operation of a refrigerator as described in claim 6, characterized in that, The refrigerator further includes a door and a door opening detection device; wherein the door opening detection device is connected to the door and is used to generate an opening signal when the door is opened; then, the method further includes: If no door opening signal is detected within the pre-set number of days of the warming period, then the day will be divided into several usage periods. If a preset number of door opening signals are detected during any of the aforementioned usage periods, then the aforementioned usage period will be designated as a backup period. If the number of consecutive days during which a door opening signal is detected reaches the preset number of days within the selected time period, the warming period will be adjusted to a time period from the start time of the selected time period to the second preset time period.

10. The method for controlling the quiet operation of a refrigerator as described in claim 6, characterized in that, After detecting that the refrigerator is operating during the temperature-pull period, acquiring the compartment temperature, and determining whether the temperature difference between the compartment temperature and the preset start-up temperature reaches a preset temperature difference threshold, the method further includes: If it is determined that the temperature difference between the room temperature and the preset start-up temperature reaches the preset temperature difference threshold, then when the ambient noise is detected to be less than or equal to the preset quietness threshold, the compressor and the fan are controlled to adjust their speeds to a preset low level.

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