Refrigerating and freezing device, control method thereof and machine readable storage medium

Abstract

The invention provides a control method of a refrigerating and freezing device, a machine readable storage medium and the refrigerating and freezing device. The control method comprises the steps that when the refrigerating and freezing device meets the starting condition of a mute mode, the refrigerating load is controlled to be closed so as to enter the mute mode; after a preset duration, the chamber temperature of each chamber is obtained, and a first temperature is obtained; and according to the on-off point of the preset gear of each chamber and the first temperature, starting and stopping of the refrigeration load are controlled. The problem that an existing mute mode is poor in mute effect is solved, and the purpose of improving the user experience is achieved.

Description

Technical Field

[0001] This invention relates to the field of refrigeration technology, and in particular to a control method for a refrigeration and freezing apparatus, a machine-readable storage medium, and a refrigeration and freezing apparatus. Background Technology

[0002] Currently, with the continuous improvement of living standards, consumers have increasingly higher requirements for the quietness of refrigerators. Refrigerator noise is a significant factor affecting its quietness. The main sources of refrigerator noise include the operating noise of the compressor at the bottom of the refrigerator, the noise from the thermal expansion and contraction or ejection of the evaporator or condenser, the operating noise of the refrigeration fan, the operating noise of the freezer fan, and the noise of refrigerant flowing in the pipes. Existing refrigerators typically reduce noise in quiet mode by reducing the compressor speed and / or the fan speed. However, because refrigerator noise is affected by various factors, these noise reduction methods are not effective, resulting in poor quietness and a reduced user experience. Summary of the Invention

[0003] In view of the above problems, the present invention is proposed to provide a control method, a machine-readable storage medium, and a refrigeration and freezing device for overcoming or at least partially solving the above problems, which can solve the problem of poor noise reduction in existing silent modes and improve the user experience.

[0004] Specifically, the present invention provides a control method for a refrigeration and freezing apparatus, comprising:

[0005] When the refrigeration and freezing unit meets the start-up conditions for silent mode, the refrigeration load is shut off to enter silent mode.

[0006] After a preset time period, the temperature of each room is obtained to get the first temperature;

[0007] The start and stop of the cooling load are controlled according to the preset start and stop points of each compartment and the first temperature.

[0008] Optionally, controlling the start and stop of the cooling load based on the preset start / stop points of each compartment and the first temperature includes:

[0009] Based on the preset start-up points of each compartment and the first temperature, determine whether the start-up conditions for the cooling load are met.

[0010] If so, the cooling load will be turned on, and the speed of the compressor and / or fan will be controlled according to the preset control strategy;

[0011] If not, continue with the steps described above to control the shutdown of the cooling load.

[0012] Optionally, the preset setting of the variable temperature chamber is the high setting;

[0013] When the set temperature of the variable temperature chamber is less than or equal to 0℃, the high-level start-up point of the variable temperature chamber is -7℃ to -18℃.

[0014] When the set temperature of the variable temperature chamber is greater than 0℃, the high-level start-up and shutdown point of the variable temperature chamber is 1℃ to 9℃.

[0015] Optionally, the control of shutting down the refrigeration load includes: controlling the compressor and fan to stop, closing the damper, and resetting the solenoid valve;

[0016] The control of the refrigeration load includes: controlling the compressor and fan to start, and the damper and solenoid valve to open.

[0017] Optionally, controlling the speed of the compressor and / or fan according to a preset control strategy includes:

[0018] Obtain the actual ambient temperature;

[0019] The speed of the compressor and / or the fan is controlled according to the actual ambient temperature.

[0020] Optionally, controlling the speed of the compressor and / or the fan based on the actual ambient temperature includes:

[0021] If the actual ambient temperature is less than or equal to the preset ambient temperature, the compressor is controlled to run at a first compressor speed, and / or the fan is controlled to run at a first fan speed;

[0022] If the actual ambient temperature is greater than the preset ambient temperature, control the compressor to run at a second compressor speed, and / or control the fan to run at a second fan speed;

[0023] The second compressor has a higher speed than the first compressor, and the second fan has a higher speed than the first fan.

[0024] Optionally, the first compressor speed is the compressor speed with the lowest noise level when the refrigeration and freezing unit is operating only the compressor, and the first compressor speed is within the rated compressor speed range; and / or

[0025] The first fan speed is the fan speed with the lowest noise level when the refrigeration and freezing device is operating only the fan, and the first fan speed is within the rated fan speed range.

[0026] Optionally, the second compressor speed is the compressor speed of the refrigeration unit that has the lowest noise level when only the compressor is running; and / or

[0027] The second fan speed is the speed of the other fan with the lowest noise level when only the fan is running in the refrigeration and freezing unit.

[0028] Optionally, after controlling the speed of the compressor and / or fan according to a preset control strategy, the method further includes:

[0029] Obtain the temperature of each compartment to get the second temperature;

[0030] Determine whether the second temperature meets the exit conditions for silent mode;

[0031] If so, control the refrigeration and freezing device to exit silent mode and operate in normal mode;

[0032] Obtain the temperature of each compartment to get the third temperature;

[0033] When the third temperature of each of the compartments is less than or equal to the corresponding target temperature, determine whether the current time is within the preset silent time period.

[0034] If so, the refrigeration and freezing device will be controlled to re-enter silent mode.

[0035] Optionally, the exit condition includes: the second temperature of any room is higher than the start / stop point of the corresponding preset gear by a preset temperature threshold.

[0036] On the other hand, the present invention also provides a machine-readable storage medium having a machine-executable program stored thereon, which, when executed by a processor, implements the control method as described in any of the preceding claims.

[0037] In another aspect, the present invention also provides a refrigeration and freezing apparatus, including a controller, the controller including a memory, a processor and a machine-executable program stored in the memory and running on the processor, and the processor, when executing the machine-executable program, implements the control method as described in any of the above.

[0038] In the control method, machine-readable storage medium, and refrigeration and freezing apparatus of the present invention, after entering silent mode, the refrigeration load is first controlled to shut down to reduce noise. After a preset time has elapsed since the refrigeration load shut down, the start and stop of the refrigeration load are controlled according to the preset on / off points of each compartment. This not only maintains the quietness as much as possible but also ensures good preservation while maintaining silent mode. Compared with the prior art, the present invention can significantly improve the quietness of silent mode, thereby enhancing the user experience.

[0039] Furthermore, the control method of the present invention has the advantages of simple control procedures and easy execution.

[0040] The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0041] The following sections will describe some specific embodiments of the invention in detail by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or portions. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0042] Figure 1 This is a schematic flowchart of a control method for a refrigeration and freezing apparatus according to an embodiment of the present invention;

[0043] Figure 2 This is a schematic flowchart of a control method for a refrigeration and freezing apparatus according to an embodiment of the present invention;

[0044] Figure 3 This is a schematic flowchart of a control method for a refrigeration and freezing apparatus according to an embodiment of the present invention;

[0045] Figure 4 This is a schematic flowchart of a control method for a refrigeration and freezing apparatus according to an embodiment of the present invention;

[0046] Figure 5 This is a schematic flowchart of a control method for a refrigeration and freezing apparatus according to an embodiment of the present invention;

[0047] Figure 6 This is a schematic flowchart of a control method for a refrigeration and freezing apparatus according to an embodiment of the present invention;

[0048] Figure 7 This is a schematic structural diagram of a machine-readable storage medium according to an embodiment of the present invention;

[0049] Figure 8 This is a schematic structural diagram of a refrigeration and freezing apparatus according to an embodiment of the present invention. Detailed Implementation

[0050] The following reference Figures 1 to 8This invention describes a control method for a refrigeration and freezing apparatus, a machine-readable storage medium, and a refrigeration and freezing apparatus according to embodiments of the present invention. In this description, it should be understood that 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0051] Unless otherwise expressly specified and limited, the terms "set up," "install," "connect," "link," "fix," and "couple" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0052] Furthermore, in the description of this embodiment, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. That is, in the description of this embodiment, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "below" of the second feature can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0053] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0054] Figure 1This is a schematic flowchart of a control method for a refrigeration and freezing apparatus 100 according to an embodiment of the present invention, as shown below. Figure 1 As shown, and refer to Figures 2 to 6 This invention provides a control method for a refrigeration and freezing device 100, which may include the following steps:

[0055] S100: When the refrigeration and freezing unit meets the start-up conditions of the silent mode, the refrigeration load is shut off to enter the silent mode.

[0056] S200 obtains the room temperature of each compartment after the cooling load has been turned off for a preset time, and obtains the first temperature.

[0057] The S300 controls the start and stop of the cooling load based on the preset start and stop points and first temperature of each compartment.

[0058] Specifically, the cooling load includes a compressor 110, a fan 120, a damper 140, and a solenoid valve 150. The preset start / stop points for each compartment refer to the start / stop temperatures corresponding to each compartment's preset setting. When the first temperature of any compartment is greater than or equal to the corresponding start / stop point, the cooling load is turned on to lower the temperature of that compartment; conversely, when the first temperature of all compartments is less than the corresponding start / stop point, the cooling load remains off to maintain a quiet operation. The preset duration can be set as needed; preferably, it can be from 10 minutes to 3 hours, for example: 10 minutes, 20 minutes, 0.5 hours, 1 hour, 2 hours, 2.5 hours, or 3 hours.

[0059] In this embodiment, after entering silent mode, the cooling load is first shut off to reduce noise. After a preset time has elapsed since the cooling load shut off, the start and stop of the cooling load are controlled according to the preset on / off points of each compartment. This not only maintains the quietness as much as possible but also ensures good food preservation in silent mode. Compared with existing technologies, this invention significantly improves the quietness of silent mode, thereby enhancing the user experience.

[0060] In some alternative embodiments of the present invention, the refrigeration and freezing apparatus 100 includes compartments. The number of compartments in the refrigeration and freezing apparatus 100 may be one, two, three, four, or more. Preferably, the refrigeration and freezing apparatus 100 includes a refrigeration compartment R, a freezing compartment F, and a variable temperature compartment S.

[0061] In some optional embodiments of the present invention, in S200, the preset setting of the variable temperature compartment S is a high setting. Specifically, the on / off point of the preset setting of the variable temperature compartment S refers to the on / off point of the variable temperature compartment S at the high setting. In other optional embodiments, the preset setting can also be a medium setting or a low setting. Since the variable temperature compartment S has high requirements for food preservation, the preset setting of the variable temperature compartment S is a high setting. In silent mode, this can better ensure the freezing and refrigeration effect of the variable temperature compartment S, that is, it can better balance the preservation effect of the variable temperature compartment S.

[0062] Furthermore, when the set temperature of the variable temperature chamber is less than or equal to 0℃, the high-level start-up point of the variable temperature chamber is -7℃ to -18℃.

[0063] When the set temperature of the variable temperature chamber is greater than 0℃, the high-level start-up and shutdown point of the variable temperature chamber is 1℃ to 9℃.

[0064] In some optional embodiments of the present invention, the preset setting of the refrigerator compartment R is a low, medium, or high setting. Preferably, the preset setting of the refrigerator compartment R is a low or medium setting to extend the cooling load shut-off time, thereby enabling the refrigeration and freezing unit to have a better noise reduction effect.

[0065] In some optional embodiments of the present invention, the preset setting of the freezer compartment F is a low, medium, or high setting. Preferably, the preset setting of the freezer compartment F is a low or medium setting to extend the cooling load shut-off time, thereby enabling the refrigeration and freezing device to have a better noise reduction effect.

[0066] like Figure 2 As shown, in some optional embodiments of the present invention, S300, controlling the start and stop of the cooling load according to the preset start / stop point of each compartment and the first temperature includes the following steps:

[0067] S301, based on the preset start / stop points and first temperature of each compartment, determine whether the start-up conditions for the cooling load are met; if yes, proceed to S302; if no, proceed to S100.

[0068] S302 controls the activation of the cooling load;

[0069] S303 controls the speed of the compressor and / or fan according to a preset control strategy.

[0070] This embodiment provides a specific method for controlling the start and stop of the cooling load according to the preset start and stop points of each room, which has the advantages of simple control program and easy execution.

[0071] In some optional embodiments of the present invention, step S100, the step of controlling the refrigeration load to shut down, specifically includes: controlling the compressor and fan to stop, closing the damper 140, and resetting the solenoid valve 150. Step S302, the step of controlling the refrigeration load to start, specifically includes: controlling the compressor and fan to start, and opening the damper 140 and the solenoid valve 150. This embodiment provides a specific method for controlling the shut-down and start-up of the refrigeration load, which has the beneficial effect of simple and easy-to-execute control program.

[0072] like Figure 3 As shown, in some optional embodiments of the present invention, step S303, controlling the speed of the compressor 110 and / or the fan 120 according to a preset control strategy, includes:

[0073] S400, obtain the actual ambient temperature;

[0074] The S500 controls the speed of the compressor and / or fan according to the actual ambient temperature.

[0075] Specifically, in S400, the actual ambient temperature refers to the ambient temperature of the space where the refrigeration and freezing unit 100 is located.

[0076] In this embodiment, the silent mode is divided into two stages. Upon entering silent mode, the first stage begins by shutting down the refrigeration load to reduce noise. After a preset time of refrigeration load shutdown, if the start-up conditions for the refrigeration load are met, the second stage begins, controlling the speed of compressor 110 and / or fan 120 according to the actual ambient temperature. Compared with existing technologies, this invention significantly improves the quietness of the silent mode, thereby enhancing the user experience. Furthermore, controlling the speed of compressor 110 and / or fan 120 according to the actual ambient temperature better balances quiet operation and preservation.

[0077] like Figure 4 As shown, in some optional embodiments of the present invention, step S500, which involves controlling the speed of compressor 110 and / or fan 120 according to the actual ambient temperature, includes the following steps:

[0078] S501, if the actual ambient temperature is less than or equal to the preset ambient temperature, control the compressor 110 to execute the first compressor speed, and / or control the fan 120 to execute the first fan speed.

[0079] S502, if the actual ambient temperature is greater than the preset ambient temperature, control the compressor 110 to execute the second compressor speed, and / or control the fan 120 to execute the second fan speed.

[0080] Among them, the second compressor has a higher speed than the first compressor, and the second fan has a higher speed than the first fan.

[0081] Specifically, when the actual ambient temperature is less than or equal to the preset ambient temperature, step S501 is executed. Step S501 includes the following three cases: ① Controlling compressor 110 to execute the first compressor speed. ② Controlling fan 120 to execute the first fan speed. ③ Controlling compressor 110 to execute the first compressor speed and controlling fan 120 to execute the first fan speed. When the actual ambient temperature is greater than the preset ambient temperature, step S502 is executed. Step S502 includes the following three cases: ① Controlling compressor 110 to execute the second compressor speed. ② Controlling fan 120 to execute the second fan speed. ③ Controlling compressor 110 to execute the second compressor speed and controlling fan 120 to execute the second fan speed. The preset ambient temperature can be set as needed. Preferably, the preset ambient temperature is 20℃ to 45℃, for example, 20℃, 25℃, 30℃, 35℃, 40℃, or 45℃. More preferably, the preset ambient temperature is 32℃. In this embodiment, when the actual ambient temperature is high, a relatively high compressor speed and / or fan speed is used, which can better balance noise reduction and cooling effect.

[0082] In some optional embodiments of the present invention, in step S501, the first compressor speed is the compressor speed with the lowest noise level corresponding to the refrigeration and freezing unit 100 when only the compressor 110 is running, wherein the first compressor speed is within the rated compressor speed range. In some alternative embodiments, the first compressor speed may also be the lower limit of the rated compressor speed range.

[0083] Specifically, the speed of the first compressor is preset on the controller of the refrigeration and freezing unit 100.

[0084] The method for obtaining the first compressor speed may include the following steps: obtaining several compressor speed values ​​within the rated compressor speed range; under the operating condition that the refrigeration and freezing unit 100 only operates the compressor 110 and does not operate the fan 120, obtaining the noise value of the refrigeration and freezing unit 100 when the compressor 110 operates at the above-mentioned compressor speed values, and obtaining multiple noise values; taking the compressor speed value corresponding to the smallest noise value among the multiple noise values ​​as the first compressor speed.

[0085] The noise of the refrigeration and freezing unit 100 is affected by various factors, among which the compressor 110 is the main source of noise. However, the compressor speed and the noise of the refrigeration and freezing unit 100 are not positively correlated; that is, a lower compressor speed does not necessarily mean lower noise. Therefore, when the actual ambient temperature is less than or equal to the preset ambient temperature, operating at the compressor speed with the lowest noise level can further improve the quietness effect.

[0086] Furthermore, the speed of the first blower can be set according to the speed of the first compressor. That is to say, the speed of the blower is related to the speed of the compressor; generally, when the compressor speed is low, the speed of the blower is also low, and vice versa.

[0087] In some optional embodiments of the present invention, in step S501, the first fan speed is the fan speed with the lowest noise level when only the fan 120 is running in the refrigeration and freezing device 100, and the first fan speed is within the rated fan speed range. In some optional embodiments, the first fan speed is the lower limit of the rated fan speed range.

[0088] The method for obtaining the first fan speed may include the following steps: obtaining several fan speed values ​​within the rated fan speed range; under the condition that the refrigeration and freezing device 100 only operates the fan 120 and does not operate the compressor 110, obtaining the noise value of the refrigeration and freezing device 100 when the fan 120 operates at the above-mentioned fan speed values, and obtaining multiple noise values; taking the fan speed value corresponding to the smallest noise value among the multiple noise values ​​as the first preset fan speed.

[0089] The noise of the refrigeration and freezing unit 100 is affected by various factors, among which the fan 120 is the main source of noise. However, the fan speed and the noise of the refrigeration and freezing unit 100 are not positively correlated; that is, a lower fan speed does not necessarily mean lower noise. Since the fan 120 has the lowest noise level when running at the first preset fan speed, when the actual ambient temperature is less than or equal to the preset ambient temperature, executing the fan speed with the lowest noise level can further improve the noise reduction effect.

[0090] Furthermore, the speed of the first compressor can be set according to the speed of the first fan. That is to say, the compressor speed is related to the fan speed; generally, when the fan speed is low, the compressor speed is also low, and vice versa.

[0091] In some optional embodiments of the present invention, in step S501, the first compressor speed is the compressor speed with the lowest noise level when only the compressor 110 is running in the refrigeration and freezing unit 100, wherein the first compressor speed is within the rated compressor speed range. The first fan speed is the fan speed with the lowest noise level when only the fan 120 is running in the refrigeration and freezing unit 100, wherein the first fan speed is within the rated fan speed range. When the actual ambient temperature is ≤ the preset ambient temperature, executing the fan speed and the compressor speed with the lowest corresponding noise level can further improve the noise reduction effect.

[0092] In some optional embodiments of the present invention, the second compressor speed is the other compressor speed with the lowest noise level when the refrigeration and freezing unit is operating only the compressor, within the rated compressor speed range. This embodiment can further improve the noise reduction effect, thereby providing users with a better quiet experience.

[0093] Specifically, the method for obtaining the first compressor speed and the second compressor speed may include the following steps: obtaining several compressor speed values ​​within the rated compressor speed range; under the operating condition that the refrigeration and freezing unit 100 only operates the compressor 110 and does not operate the fan 120, obtaining the noise value of the refrigeration and freezing unit 100 when the compressor 110 operates at the above-mentioned compressor speed values, and obtaining multiple noise values; taking the two compressor speed values ​​corresponding to the minimum noise value among the multiple noise values ​​as the first compressor speed and the second compressor speed.

[0094] In some optional embodiments of the present invention, the second fan speed is the speed of the other fan with the lowest noise level when only the fan in the refrigeration and freezing unit is running. This embodiment can further improve the noise reduction effect, thereby providing users with a better quiet experience.

[0095] Specifically, the method for obtaining the first fan speed and the second fan speed may include the following steps: obtaining several fan speed values ​​within the rated fan speed range; under the operating condition that the refrigeration and freezing unit 100 only operates the fan 120 and does not operate the compressor 110, obtaining the noise value of the refrigeration and freezing unit 100 when the fan 120 operates at the above-mentioned fan speed values, and obtaining multiple noise values; taking the two fan speed values ​​corresponding to the minimum noise value among the multiple noise values ​​as the first fan speed and the second fan speed.

[0096] In some optional embodiments of the present invention, the first compressor speed and the second compressor speed are the two compressor speeds with the lowest noise levels when the refrigeration and freezing unit is operating only the compressor. The first fan speed and the second fan speed are the two fan speeds with the lowest noise levels when the refrigeration and freezing unit is operating only the fan. This embodiment can further improve the noise reduction effect, thereby providing users with a better quiet experience.

[0097] like Figure 5 As shown, in some optional embodiments of the present invention, the control method for the air conditioner further includes the following steps:

[0098] S600, obtain the room temperature of each compartment to obtain the second temperature;

[0099] S700: Determine if the second temperature meets the exit conditions for silent mode; if not, execute S303; if yes, execute S800.

[0100] S800 controls the refrigeration and freezing units to exit silent mode and operate in normal mode;

[0101] S901, obtain the temperature of each compartment to get the third temperature; when the third temperature of each compartment is less than or equal to the corresponding target temperature, then execute S902.

[0102] S902, determine whether the current time is within the preset silent period; if yes, execute S100; if no, execute S903.

[0103] S903, controls the refrigeration and freezing unit to continue operating in normal mode.

[0104] Specifically, the target temperature for each room is equal to or less than the corresponding set temperature. This set temperature refers to the user-set temperature.

[0105] During the operation of silent mode, if the exit conditions for silent mode are not met, step S303 is executed. When the exit conditions for silent mode are met, silent mode is exited, and normal mode is executed to quickly reduce the compartment temperature and avoid affecting the preservation effect. If the current time is still within the preset silent time period after the compartment temperature is reduced, silent mode is executed again to maximize the actual running time of silent mode. Silent mode is not entered again until the current time is no longer within the preset silent time period. Using the control method of this embodiment, the silent effect and the preservation effect can be better balanced within the preset silent time period.

[0106] In some optional embodiments of the present invention, the exit condition for silent mode includes: the second temperature of any room is higher than the power-on / off point of the corresponding preset setting by a preset temperature threshold.

[0107] Preferably, the preset temperature threshold is 3°C to 10°C. For example, the temperature threshold can be any one of 3°C, 3°C, 4°C, 5°C, 6°C, 7°C, 8°C, 9°C, and 10°C. That is, when the second temperature of any room is 3°C to 10°C higher than the corresponding preset power-on / off point, the silent mode is exited.

[0108] In some optional embodiments of the present invention, the preset quiet time period is a quiet time period pre-set within the refrigeration and freezing device 100. Multiple quiet time periods can be preset within the refrigeration and freezing device 100, which the user can select as needed. For example, the preset quiet time period can be from 22:00 to 6:00 the next day; or, the preset quiet time period can be from 10:00 to 18:00.

[0109] In some optional embodiments of the present invention, the preset silent period is the silent period set by the user through a mobile APP, the cloud, or the control panel of the refrigeration and freezing device 100. Users can set the desired silent period as needed; that is, the start time and duration of the silent mode can be customized according to user requirements.

[0110] like Figure 6 As shown, in a preferred embodiment of the present invention, the control method of the refrigeration and freezing apparatus 100 includes the following steps:

[0111] S1 receives a signal that the refrigeration and freezing unit meets the start-up conditions for silent mode.

[0112] S2 controls the compressor and fan to stop, the damper 140 to close, and the solenoid valve 150 to reset; after a preset time, S3 is executed.

[0113] S3, obtain the temperature of each compartment to get the first temperature.

[0114] S4. Based on the preset start / stop points and first temperature of each room, determine whether the start-up conditions for the cooling load are met; if yes, execute S5; if no, execute S2; wherein, the first target temperature is greater than the user-set temperature.

[0115] S5 controls the start of the compressor and fan, and the opening of the damper 140 and solenoid valve 150.

[0116] S6, obtain the actual ambient temperature.

[0117] S7, determine whether the actual ambient temperature is less than or equal to the preset ambient temperature; if yes, proceed to S8; if no, proceed to S9.

[0118] S8 controls the compressor to execute a first compressor speed and controls the fan to execute a first fan speed; wherein, the first compressor speed is the compressor speed with the lowest noise level when only the compressor is running in the refrigeration and freezing unit. The first fan speed is the fan speed corresponding to the first compressor speed, which is preset in the controller of the refrigeration and freezing unit.

[0119] S9 controls the compressor to operate at the second compressor speed and controls the fan to operate at the second fan speed. The second compressor speed is greater than the first compressor speed, and the second fan speed is greater than the first fan speed.

[0120] S10, obtain the room temperature of each compartment to obtain the second temperature;

[0121] S11, determine whether the second temperature meets the exit condition of silent mode; if yes, execute S12; if no, execute S7.

[0122] S12 controls the refrigeration and freezing unit to exit silent mode and operate in normal mode.

[0123] S13: Obtain the temperature of each compartment to get the third temperature; when the third temperature of each compartment is less than or equal to the corresponding target temperature, execute S14.

[0124] S14, determine whether the current time is within the preset silent period; if yes, execute S2; if no, execute S15. The target temperature is less than or equal to the corresponding set temperature.

[0125] S15, control the refrigeration and freezing unit to continue operating in normal mode.

[0126] The control method of this embodiment can significantly improve the noise reduction effect and effective noise reduction time; on the other hand, it can also effectively maintain the preservation effect.

[0127] In some optional embodiments of the present invention, the refrigeration and freezing device 100 can be a freezer, a beverage refrigerator, a fresh food refrigerator, or a refrigerator, etc.

[0128] Figure 7 This is a schematic diagram of a machine-readable storage medium 200 according to an embodiment of the present invention, as shown below. Figure 7 As shown, this embodiment of the invention also provides a machine-readable storage medium 200, on which a machine-executable program 201 is stored. When the machine-executable program 201 is executed by the processor 132, it implements the control method of the refrigeration and freezing apparatus 100 according to any of the above embodiments.

[0129] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be specifically implemented in any machine-readable storage medium 200 for use by, or in conjunction with, an instruction execution system, apparatus or device (such as a computer-based system, a system including processor 132 or other system that can fetch and execute instructions from an instruction execution system, apparatus or device).

[0130] For the purposes of this embodiment, the machine-readable storage medium 200 can be any means capable of containing, storing, communicating, propagating, or transmitting a program for use by or in conjunction with an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the machine-readable storage medium 200 include: an electrical connection (electronic device) having one or more wires, a portable computer disk drive (magnetic device), random access memory 131 (RAM), read-only memory 131 (ROM), erasable and editable read-only memory 131 (EPROM or flash memory 131), fiber optic devices, and portable optical disc read-only memory 131 (CDROM). Furthermore, the machine-readable storage medium 200 can even be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in the memory 131.

[0131] Figure 8 This is a schematic diagram of a refrigeration and freezing apparatus 100 according to an embodiment of the present invention, as shown below. Figure 8 As shown, this embodiment of the invention also provides a refrigeration and freezing apparatus 100, which includes a controller 130. The controller 130 includes a memory 131, a processor 132, and a machine-executable program 201 stored in the memory 131 and running on the processor 132. When the processor 132 executes the machine-executable program 201, it implements the control method of the refrigeration and freezing apparatus according to any of the above embodiments.

[0132] Specifically, controller 130 may include processor 132 adapted to execute stored instructions and memory 131 providing temporary storage space for the operation of said instructions during operation. Processor 132 may be a single-core processor 132, a multi-core processor 132, a computing cluster, or any other configuration. Memory 131 may include random access memory 131 (RAM), read-only memory 131, flash memory, or any other suitable storage system.

[0133] The processor 132 can be connected via a system interconnect (e.g., PCI, PCI-Express, etc.) to an I / O interface (input / output interface) suitable for connecting the refrigeration unit 100 to one or more I / O devices (input / output devices). The I / O devices may include, for example, a keyboard and indicating devices, wherein the indicating devices may include a touchpad or a touch screen, etc.

[0134] The processor 132 may also be linked via a system interconnect to a display interface suitable for connecting the controller 130 to a display device. The display device may include a display screen that is a built-in component of the controller 130. The display device may also include a computer monitor, television, or projector externally connected to the refrigeration unit 100. Furthermore, a network interface controller (NIC) may be adapted to connect the controller 130 to a network via a system interconnect. In some embodiments, the NIC may use any suitable interface or protocol (such as an Internet Minicomputer System Interface) to transmit data. The network may be a cellular network, a radio network, a wide area network (WAN), a local area network (LAN), or the Internet, etc. Remote devices may connect to the controller 130 via the network.

[0135] The flowchart provided in this embodiment is not intended to indicate that the operations of the method will be performed in any particular order, or that all operations of the method are included in every case. Furthermore, the method may include additional operations. Within the scope of the technical concept provided by the method in this embodiment, additional variations can be made to the above method.

[0136] While this invention provides several exemplary embodiments, many other variations or modifications consistent with the principles of this invention can be directly determined or derived from the disclosure of this invention without departing from its spirit and scope. Therefore, the scope of this invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A control method for a refrigeration and freezing apparatus, characterized in that, include: When the refrigeration and freezing unit meets the start-up conditions for silent mode, the refrigeration load is shut off to enter silent mode. After a preset time period, the temperature of each room is obtained to get the first temperature; The start and stop of the cooling load are controlled according to the preset start and stop points of each compartment and the first temperature.

2. The control method according to claim 1, characterized in that, The method of controlling the start and stop of the cooling load based on the preset start and stop points of each compartment and the first temperature includes: Based on the preset start-up points of each compartment and the first temperature, determine whether the start-up conditions for the cooling load are met. If so, the cooling load will be turned on, and the speed of the compressor and / or fan will be controlled according to the preset control strategy; If not, continue with the steps described above to control the shutdown of the cooling load.

3. The control method according to claim 1, characterized in that, The preset setting of the variable temperature room is the high setting; When the set temperature of the variable temperature chamber is less than or equal to 0℃, the high-level start-up point of the variable temperature chamber is -7℃ to -18℃. When the set temperature of the variable temperature chamber is greater than 0℃, the high-level start-up and shutdown point of the variable temperature chamber is 1℃ to 9℃.

4. The control method according to claim 2, characterized in that, The aforementioned control of shutting down the refrigeration load includes: controlling the compressor and fan to stop, closing the damper, and resetting the solenoid valve; The control of the refrigeration load includes: controlling the compressor and fan to start, and the damper and solenoid valve to open.

5. The control method according to claim 2, characterized in that, The aforementioned control of the compressor and / or fan speed according to a preset control strategy includes: Obtain the actual ambient temperature; The speed of the compressor and / or the fan is controlled according to the actual ambient temperature.

6. The control method according to claim 5, characterized in that, The method of controlling the speed of the compressor and / or the fan based on the actual ambient temperature includes: If the actual ambient temperature is less than or equal to the preset ambient temperature, the compressor is controlled to run at a first compressor speed, and / or the fan is controlled to run at a first fan speed; If the actual ambient temperature is greater than the preset ambient temperature, control the compressor to run at a second compressor speed, and / or control the fan to run at a second fan speed; The second compressor has a higher speed than the first compressor, and the second fan has a higher speed than the first fan.

7. The control method according to claim 6, characterized in that, The first compressor speed is the compressor speed with the lowest noise level when the refrigeration and freezing unit is operating only the compressor, and the first compressor speed is within the rated compressor speed range; and / or The first fan speed is the fan speed with the lowest noise level when the refrigeration and freezing device is operating only the fan, and the first fan speed is within the rated fan speed range.

8. The control method according to claim 7, characterized in that, The second compressor speed is the compressor speed with the lowest noise level when only the compressor is running in the refrigeration and freezing unit; and / or The second fan speed is the speed of the other fan with the lowest noise level when only the fan is running in the refrigeration and freezing unit.

9. The control method according to claim 2, characterized in that, After controlling the compressor and / or fan speed according to a preset control strategy, the method further includes: Obtain the temperature of each compartment to get the second temperature; Determine whether the second temperature meets the exit conditions for silent mode; If so, control the refrigeration and freezing device to exit silent mode and operate in normal mode; Obtain the temperature of each compartment to get the third temperature; When the third temperature of each of the compartments is less than or equal to the corresponding target temperature, determine whether the current time is within the preset silent time period. If so, the refrigeration and freezing device will be controlled to re-enter silent mode.

10. The control method according to claim 9, characterized in that, The exit condition includes: the second temperature of any room is higher than the preset temperature threshold of the corresponding preset power-on / off point.

11. A machine-readable storage medium, characterized in that, It stores a machine-executable program thereon, which, when executed by a processor, implements the control method as described in any one of claims 1 to 10.

12. A refrigeration and freezing apparatus, characterized in that, The controller includes a memory, a processor, and a machine-executable program stored in the memory and running on the processor, wherein when the processor executes the machine-executable program, it implements the control method as described in any one of claims 1 to 10.

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