Refrigerator and control method thereof

Abstract

This invention discloses a refrigerator and its control method, comprising: a cabinet serving as the supporting structure of the refrigerator, with a compressor installed inside; an acceleration sensor disposed on the compressor for detecting the compressor's acceleration; and a controller configured to: upon receiving a start command or a stop command, if the acquired historical start acceleration and historical stop acceleration satisfy a preset cylinder collision condition, control the compressor's acceleration to adjust according to a corresponding preset step-wise adjustment strategy; wherein the historical start acceleration is the acceleration detected by the acceleration sensor during the compressor's historical start-up phase, and the historical stop acceleration is the acceleration detected by the acceleration sensor during the compressor's historical stop phase. Using this embodiment of the invention can ensure the smoothness of the compressor during the start-up and stop phases, reduce noise generated during compressor start-up and stop, and improve the user experience.

Description

Technical Field

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

[0002] As people's living standards improve, they have higher and higher requirements for quality of life, especially in the use of electrical appliances, where low noise is increasingly important. People are also particularly concerned about the noise generated during refrigerator use. When a refrigerator is in use, its internal compressor needs to start and stop frequently. However, due to inertia, the compressor will vibrate significantly when starting or stopping, and may even cause the compressor core to collide with the casing, resulting in cylinder knocking and thus generating noise. Summary of the Invention

[0003] The purpose of this invention is to provide a refrigerator and its control method that can ensure the stability of the compressor during the start-up and shutdown phases, reduce the noise generated during compressor start-up and shutdown, and improve the user experience.

[0004] To achieve the above objectives, embodiments of the present invention provide a refrigerator, comprising:

[0005] The cabinet, which serves as the supporting structure of the refrigerator, houses the compressor.

[0006] An acceleration sensor, installed on the compressor, is used to detect the acceleration of the compressor;

[0007] Controller, used for:

[0008] When a start command or a stop command is received, if the historical start acceleration and historical stop acceleration obtained meet the preset cylinder collision conditions, the acceleration of the compressor is controlled to be adjusted according to the corresponding preset step adjustment strategy.

[0009] Wherein, the historical start-up acceleration is the acceleration detected by the acceleration sensor during the compressor's historical start-up phase, and the historical shutdown acceleration is the acceleration detected by the acceleration sensor during the compressor's historical shutdown phase.

[0010] As an improvement to the above solution, the cylinder collision conditions include:

[0011] In the most recent compressor historical start-up phase, there was a situation where the historical start-up acceleration was greater than a preset start-up acceleration threshold, and the first duration was less than a first preset duration threshold; and,

[0012] In the most recent compressor historical shutdown phase, the historical shutdown acceleration was greater than a preset shutdown acceleration threshold, and the second duration was less than a second preset duration threshold.

[0013] Wherein, the first duration is the duration during which the historical startup acceleration is greater than the preset startup acceleration threshold, and the second duration is the duration during which the historical shutdown acceleration is greater than the preset shutdown acceleration threshold.

[0014] As an improvement to the above solution, the cylinder collision conditions include:

[0015] In several recent compressor historical start-up phases, for each compressor historical start-up phase, there was a situation where the historical start-up acceleration was greater than a preset start-up acceleration threshold, and the first duration was less than a first preset duration threshold; and,

[0016] In the recent compressor historical shutdown phases, for each compressor historical shutdown phase, there is a historical shutdown acceleration greater than a preset shutdown acceleration threshold, and the second duration is less than a second preset duration threshold.

[0017] Wherein, the first duration is the duration during which the historical startup acceleration is greater than the preset startup acceleration threshold, and the second duration is the duration during which the historical shutdown acceleration is greater than the preset shutdown acceleration threshold.

[0018] As an improvement to the above scheme, when a start command is received, the acceleration of the compressor is adjusted according to a corresponding preset step adjustment strategy, including: the acceleration of the compressor is gradually increased according to the preset step start strategy until the preset target acceleration is reached.

[0019] Under the preset tiered startup strategy, the controller is further configured to:

[0020] The compressor's acceleration is controlled to rise to a first preset acceleration, and the compressor is controlled to operate at the first preset acceleration for a first preset operating time.

[0021] After the compressor operates at the first preset acceleration for a first preset operating time, the acceleration of the compressor is controlled to increase to a second preset acceleration, and the compressor is controlled to operate at the second preset acceleration for a second preset operating time.

[0022] After the compressor operates at the second preset acceleration for a second preset operating time, the acceleration of the compressor is controlled to increase to a preset target acceleration;

[0023] Wherein, the first preset acceleration is less than the second preset acceleration, and the second preset acceleration is less than the target acceleration.

[0024] As an improvement to the above scheme, when a start command is received, the acceleration of the compressor is adjusted according to a corresponding preset step adjustment strategy, including: the acceleration of the compressor is gradually increased according to the preset step start strategy until the preset target acceleration is reached.

[0025] Under the preset tiered startup strategy, the controller is further configured to:

[0026] The compressor's acceleration is controlled to rise uniformly from zero to the first preset acceleration within a first preset rising time, and the compressor is controlled to operate at the first preset acceleration for a first preset operating time.

[0027] After the compressor operates at the first preset acceleration for a first preset operating time, the compressor's acceleration is controlled to increase uniformly from the first preset acceleration to the second preset acceleration within a second preset rising time, and the compressor is controlled to operate at the second preset acceleration for a second preset operating time.

[0028] After the compressor operates at the second preset acceleration for a second preset operating time, the acceleration of the compressor is controlled to rise uniformly from the second preset acceleration to the preset target acceleration within a third preset rising time.

[0029] Wherein, the first preset rise time is less than the second preset rise time, and the second preset rise time is less than the third preset rise time.

[0030] As an improvement to the above solution, when a shutdown command is received, the acceleration of the compressor is adjusted according to a corresponding preset step-by-step adjustment strategy, including: controlling the acceleration of the compressor to gradually decrease according to the preset step-by-step shutdown strategy until the acceleration is zero and the compressor stops.

[0031] Under the preset tiered shutdown strategy, the controller is further configured to:

[0032] The compressor's acceleration is controlled to decrease to a third preset acceleration, and the compressor is controlled to operate at the third preset acceleration for a third preset operating time.

[0033] After the compressor operates at the third preset acceleration for a third preset operating time, the acceleration of the compressor is controlled to decrease to the fourth preset acceleration, and the compressor is controlled to operate at the fourth preset acceleration for a fourth preset operating time.

[0034] After the compressor operates at the fourth preset acceleration for the fourth preset operating time, the acceleration of the compressor is controlled to decrease to zero, and the compressor stops.

[0035] Wherein, the third preset acceleration is greater than the fourth preset acceleration, and the fourth preset acceleration is greater than zero.

[0036] As an improvement to the above solution, when a shutdown command is received, the acceleration of the compressor is adjusted according to a corresponding preset step-by-step adjustment strategy, including: controlling the acceleration of the compressor to gradually decrease according to the preset step-by-step shutdown strategy until the acceleration is zero and the compressor stops.

[0037] Under the preset tiered shutdown strategy, the controller is further configured to:

[0038] The compressor's acceleration is controlled to decrease from the current acceleration to a third preset acceleration within a first preset decreasing time, and the compressor is controlled to operate at the third preset acceleration for a third preset operating time.

[0039] After the compressor operates at the third preset acceleration for a third preset operating time, the compressor's acceleration is controlled to decrease from the third preset acceleration to the fourth preset acceleration within a second preset decreasing time, and the compressor is controlled to operate at the fourth preset acceleration for a fourth preset operating time.

[0040] After the compressor operates at the fourth preset acceleration for a fourth preset operating time, the acceleration of the compressor is controlled to decrease from the fourth preset acceleration to zero within a third preset decreasing time, and the compressor stops.

[0041] Wherein, the first preset descent duration is greater than the second preset descent duration, and the second preset descent duration is greater than the third preset descent duration.

[0042] As an improvement to the above solution, the refrigerator further includes:

[0043] A compartment temperature sensor is installed inside the refrigerator compartment to detect the temperature of the compartment.

[0044] A noise sensor, installed on the compressor, is used to collect the noise during compressor operation;

[0045] Then, the controller is further configured to:

[0046] When the compressor is in a high-speed and stable operating state, the first compartment temperature detected by the compartment temperature sensor and the first operating acceleration detected by the acceleration sensor are acquired.

[0047] When the temperature of the first compartment is less than or equal to a preset compartment temperature threshold, and the first operating acceleration is greater than a preset first operating acceleration threshold, the refrigerator is controlled to generate a sound wave that is out of phase with the noise collected by the noise sensor.

[0048] As an improvement to the above solution, before the compressor enters a high-speed stable operating state, the controller is further configured to:

[0049] The second compartment temperature detected by the compartment temperature sensor and the second running acceleration detected by the acceleration sensor are obtained;

[0050] When the temperature of the second compartment is less than or equal to the temperature threshold of the compartment, and the second operating acceleration is greater than the preset second operating acceleration threshold, the refrigerator is controlled to generate a sound wave that is out of phase with the noise collected by the noise sensor; wherein, the first operating acceleration threshold is less than the second operating acceleration threshold.

[0051] To achieve the above objectives, embodiments of the present invention provide a refrigerator control method, wherein the refrigerator includes at least an acceleration sensor disposed on the refrigerator compressor, and the refrigerator control method includes:

[0052] When a start command or a stop command is received, if the historical start acceleration and historical stop acceleration obtained meet the preset cylinder collision conditions, the acceleration of the compressor is controlled to be adjusted according to the corresponding preset step adjustment strategy.

[0053] Wherein, the historical start-up acceleration is the acceleration detected by the acceleration sensor during the compressor's historical start-up phase, and the historical shutdown acceleration is the acceleration detected by the acceleration sensor during the compressor's historical shutdown phase.

[0054] Compared with the prior art, the refrigerator and its control method provided in this embodiment of the invention, when a start command or stop command is received, if the historical start acceleration and historical stop acceleration obtained meet the preset cylinder collision conditions, then the acceleration of the compressor is controlled to be adjusted according to the corresponding preset step adjustment strategy. This can adjust the compressor acceleration in a step manner during the start-up or stop phase, thereby ensuring the stability of the compressor during the start-up and stop phases, reducing the noise generated when the compressor starts and stops, improving the reliability of the compressor, and providing a high-quality user experience. Attached Figure Description

[0055] Figure 1 This is a three-dimensional structural view of a refrigerator provided in an embodiment of the present invention;

[0056] Figure 2 This is a first working flowchart of the controller provided in an embodiment of the present invention;

[0057] Figure 3 This is a second workflow diagram of the controller provided in an embodiment of the present invention;

[0058] Figure 4This is a third workflow diagram of the controller provided in an embodiment of the present invention;

[0059] Figure 5 This is the fourth workflow diagram of the controller provided in this embodiment of the invention;

[0060] Figure 6 This is the fifth workflow diagram of the controller provided in this embodiment of the invention;

[0061] Figure 7 This is the sixth workflow diagram of the controller provided in this embodiment of the invention;

[0062] Figure 8 This is the seventh workflow diagram of the controller provided in this embodiment of the invention;

[0063] Figure 9 This is the eighth workflow diagram of the controller provided in the embodiments of the present invention;

[0064] Figure 10 This is a flowchart of a refrigerator control method provided in an embodiment of the present invention;

[0065] Among them, 100 is the box body. Detailed Implementation

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

[0067] Reference Figure 1 , Figure 1 This is a perspective view of a specific embodiment of a refrigerator according to this application. The refrigerator of this embodiment has an approximately rectangular parallelepiped shape. The refrigerator includes a cabinet 100 defining a storage space and multiple doors located at the opening of the cabinet 100. Each door includes a door shell located outside the cabinet 100, a door inner liner located inside the cabinet 100, an upper cover, a lower cover, and an insulation layer located between the door shell, door inner liner, upper cover, and lower cover; typically, the insulation layer is filled with foam material. The cabinet 100 has chambers, including component storage chambers for placing refrigerator components, such as a compressor, and storage space for storing food. The storage space can be divided into multiple compartments, which, depending on their purpose, can be configured as a refrigerator compartment, a freezer compartment, or a variable temperature compartment (also known as a crisper compartment). Each compartment corresponds to one or more doors, for example, in… Figure 1The upper storage compartment features double doors. These doors can be pivotally mounted at the opening of the cabinet or can open like drawers for drawer-style storage.

[0068] The refrigerator also includes:

[0069] An acceleration sensor, installed on the compressor, is used to detect the acceleration of the compressor;

[0070] Controller, used for:

[0071] When a start command or a stop command is received, if the historical start acceleration and historical stop acceleration obtained meet the preset cylinder collision conditions, the acceleration of the compressor is controlled to be adjusted according to the corresponding preset step adjustment strategy.

[0072] Wherein, the historical start-up acceleration is the acceleration detected by the acceleration sensor during the compressor's historical start-up phase, and the historical shutdown acceleration is the acceleration detected by the acceleration sensor during the compressor's historical shutdown phase.

[0073] It is understood that the controller pre-stores response programs for compressor start-up commands and / or stop-down commands. The preset stepped adjustment strategy includes a preset stepped start-up strategy and a preset stepped stop-down strategy. The start-up command corresponds to the preset stepped start-up strategy, and the stop-down command corresponds to the preset stepped stop-down strategy. When a start-up command is received, if the historical start-up acceleration and historical stop-down acceleration meet the preset cylinder collision condition, the compressor acceleration is controlled to gradually increase according to the preset stepped start-up strategy until the preset target acceleration is reached. When a stop-down command is received, if the historical start-up acceleration and the historical stop-down acceleration meet the cylinder collision condition, the compressor acceleration is controlled to gradually decrease according to the preset stepped stop-down strategy until the acceleration is zero and the compressor stops.

[0074] For example, see Figure 2 , Figure 2 This is a first workflow diagram of the controller provided in an embodiment of the present invention, wherein the controller is used to execute steps S11~S12:

[0075] S11. Determine whether a start command has been received. If yes, proceed to step S12; otherwise, return to step S11.

[0076] S12. If the historical start-up acceleration and historical shutdown acceleration obtained meet the preset cylinder collision conditions, the acceleration of the compressor is controlled to gradually increase according to the preset step-by-step start-up strategy until the preset target acceleration is reached.

[0077] It is understandable that when the start command is received, if the historical start acceleration and historical stop acceleration obtained meet the preset cylinder collision conditions, it means that a cylinder collision will occur during the compressor start-up phase. In order to avoid cylinder collision during the compressor start-up phase and reduce the noise generated during the compressor start-up phase, the compressor acceleration is controlled to gradually increase according to a preset step-by-step start-up strategy until the preset target acceleration is reached, and then the compressor enters the operation phase.

[0078] For example, see Figure 3 , Figure 3 This is a second workflow diagram of the controller provided in an embodiment of the present invention, wherein the controller is used to execute steps S21-S22:

[0079] S21. Determine whether a stop command has been received. If yes, proceed to step S22; otherwise, return to step S21.

[0080] S22. When a shutdown command is received, if the historical start-up acceleration and the historical stop-down acceleration meet the cylinder collision condition, the compressor acceleration is controlled to gradually decrease according to a preset step-by-step shutdown strategy until the acceleration is zero and the compressor stops.

[0081] It is understandable that when the shutdown command is received, if the historical start-up acceleration and historical shutdown acceleration obtained meet the preset cylinder collision conditions, it indicates that a cylinder collision will occur during the compressor shutdown phase. In order to avoid cylinder collision during the compressor shutdown phase and reduce the noise generated during the compressor shutdown phase, the compressor acceleration is controlled to gradually decrease according to a preset step-by-step shutdown strategy during the compressor shutdown phase until the acceleration is zero and the compressor stops.

[0082] In an optional embodiment, the cylinder collision conditions include:

[0083] In the most recent compressor historical start-up phase, there was a situation where the historical start-up acceleration was greater than a preset start-up acceleration threshold, and the first duration was less than a first preset duration threshold; and,

[0084] In the most recent compressor historical shutdown phase, the historical shutdown acceleration was greater than a preset shutdown acceleration threshold, and the second duration was less than a second preset duration threshold.

[0085] Wherein, the first duration is the duration during which the historical startup acceleration is greater than the preset startup acceleration threshold, and the second duration is the duration during which the historical shutdown acceleration is greater than the preset shutdown acceleration threshold.

[0086] Specifically, in the previous compressor historical start-up phase, if the historical start-up acceleration is greater than a preset start-up acceleration threshold and the first duration is less than a first preset duration threshold, and in the previous compressor historical shutdown phase, if the historical shutdown acceleration is greater than a preset shutdown acceleration threshold and the second duration is less than a second preset duration threshold, then it is determined that the cylinder collision condition is met. At this time, when a compressor start / stop command is received, a stepped start / stop strategy is adopted for the current start / stop phase. Optionally, the first preset duration threshold is 10s, and the second preset duration threshold is 10s; preferably, the first preset duration threshold is 2s, and the second preset duration threshold is 2s.

[0087] For example, during the historical start-up phase of the previous compressor, if the historical start-up acceleration exceeds the preset start-up acceleration threshold and the duration of the historical start-up acceleration exceeding the preset start-up acceleration threshold is less than 2 seconds, it indicates that the start-up acceleration exceeding the threshold is an occasional phenomenon, and it is very likely that a cylinder collision has occurred.

[0088] For the previous compressor's historical shutdown phase, if the historical shutdown acceleration exceeds the preset shutdown acceleration threshold, and the duration of the historical shutdown acceleration exceeding the preset shutdown acceleration threshold is less than 2 seconds, it indicates that the shutdown acceleration exceeding the threshold is an occasional phenomenon, and it is very likely that a cylinder collision has occurred.

[0089] In an optional embodiment, the cylinder collision conditions include:

[0090] In several recent compressor historical start-up phases, for each compressor historical start-up phase, there was a situation where the historical start-up acceleration was greater than a preset start-up acceleration threshold, and the first duration was less than a first preset duration threshold; and,

[0091] In the recent compressor historical shutdown phases, for each compressor historical shutdown phase, there is a historical shutdown acceleration greater than a preset shutdown acceleration threshold, and the second duration is less than a second preset duration threshold.

[0092] Wherein, the first duration is the duration during which the historical startup acceleration is greater than the preset startup acceleration threshold, and the second duration is the duration during which the historical shutdown acceleration is greater than the preset shutdown acceleration threshold.

[0093] It is understandable that judging cylinder collision phenomenon based on only one start-stop phase may lead to certain misjudgments. To avoid misjudgments, this embodiment of the invention judges the start / stop acceleration and duration for several consecutive start-stop phases. If, in several consecutive start-stop phases, the start-stop acceleration in each phase is greater than a preset start-stop acceleration threshold, and the duration of the historical start-stop acceleration being greater than the preset start-stop acceleration threshold is less than a first preset duration threshold, and in several consecutive stop-stop phases, the historical stop-stop acceleration in each phase is greater than a preset stop-stop acceleration threshold, and the duration of the historical stop-stop acceleration being greater than the preset stop-stop acceleration threshold is less than a second preset duration threshold, then it indicates that cylinder collision phenomenon will occur during the start / stop phase. To avoid the occurrence of cylinder collision phenomenon and reduce the noise generated during the compressor start-stop phase, the compressor acceleration is controlled to start according to a preset stepped start-up strategy, and the compressor acceleration is controlled to stop according to a preset stepped stop-stop strategy.

[0094] In an optional embodiment, when a start command is received, the acceleration of the compressor is adjusted according to a corresponding preset step adjustment strategy, including: controlling the acceleration of the compressor to gradually increase according to the preset step start strategy until a preset target acceleration is reached;

[0095] Under the preset tiered startup strategy, the controller is further configured to:

[0096] The compressor's acceleration is controlled to rise to a first preset acceleration, and the compressor is controlled to operate at the first preset acceleration for a first preset operating time.

[0097] After the compressor operates at the first preset acceleration for a first preset operating time, the acceleration of the compressor is controlled to increase to a second preset acceleration, and the compressor is controlled to operate at the second preset acceleration for a second preset operating time.

[0098] After the compressor operates at the second preset acceleration for a second preset operating time, the acceleration of the compressor is controlled to increase to a preset target acceleration;

[0099] Wherein, the first preset acceleration is less than the second preset acceleration, and the second preset acceleration is less than the target acceleration.

[0100] Optionally, the first preset operating time is equal to the second preset operating time.

[0101] For example, see Figure 4 , Figure 4 This is a third flowchart of the controller provided in this embodiment of the invention, wherein the controller is used to execute steps S31 to S33:

[0102] S31. Control the acceleration of the compressor to rise to a first preset acceleration, and control the compressor to run at the first preset acceleration for a first preset running time, then proceed to step S32.

[0103] S32. After the compressor operates at the first preset acceleration for a first preset operating time, control the acceleration of the compressor to increase to the second preset acceleration, and control the compressor to operate at the second preset acceleration for a second preset operating time, and proceed to step S33.

[0104] S33. After the compressor operates at the second preset acceleration for a second preset operating time, control the acceleration of the compressor to rise to the preset target acceleration.

[0105] Understandably, to avoid the compressor suddenly operating at high speed during startup and causing cylinder collision, this embodiment sets three acceleration control points during the startup phase: a first preset acceleration, a second preset acceleration, and a target acceleration. This ensures that during startup, the compressor's acceleration starts from 0 and gradually increases to the first preset acceleration, the second preset acceleration, and the target acceleration, ultimately reaching the target acceleration before entering the compressor's operating phase. It is also understood that during each increase, the acceleration control point can be reached immediately or gradually.

[0106] In an optional embodiment, when a start command is received, the acceleration of the compressor is adjusted according to a corresponding preset step adjustment strategy, including: controlling the acceleration of the compressor to gradually increase according to the preset step start strategy until a preset target acceleration is reached;

[0107] Under the preset tiered startup strategy, the controller is further configured to:

[0108] The compressor's acceleration is controlled to rise uniformly from zero to the first preset acceleration within a first preset rising time, and the compressor is controlled to operate at the first preset acceleration for a first preset operating time.

[0109] After the compressor operates at the first preset acceleration for a first preset operating time, the compressor's acceleration is controlled to increase uniformly from the first preset acceleration to the second preset acceleration within a second preset rising time, and the compressor is controlled to operate at the second preset acceleration for a second preset operating time.

[0110] After the compressor operates at the second preset acceleration for a second preset operating time, the acceleration of the compressor is controlled to rise uniformly from the second preset acceleration to the preset target acceleration within a third preset rising time.

[0111] Wherein, the first preset rise time is less than the second preset rise time, and the second preset rise time is less than the third preset rise time.

[0112] For example, see Figure 5 , Figure 5 This is a fourth flowchart of the controller provided in an embodiment of the present invention, wherein the controller is used to execute steps S41 to S43:

[0113] S41. Control the acceleration of the compressor to rise uniformly from zero to the first preset acceleration within a first preset rising time, and control the compressor to run at the first preset acceleration for a first preset running time, then proceed to step S42.

[0114] S42. After the compressor operates at the first preset acceleration for a first preset operating time, the compressor's acceleration is controlled to rise uniformly from the first preset acceleration to the second preset acceleration within a second preset rising time, and the compressor is controlled to operate at the second preset acceleration for a second preset operating time, proceeding to step S43.

[0115] S43. After the compressor operates at the second preset acceleration for a second preset operating time, the acceleration of the compressor is controlled to rise at a constant speed from the second preset acceleration to the preset target acceleration within a third preset rising time.

[0116] It is understandable that, in order to further ensure the smoothness of compressor startup and working performance, the startup phase is further divided into five phases in this embodiment of the invention, namely, the first preset rise time, the first preset operation time, the second preset rise time, the second preset operation time, and the third preset rise time.

[0117] Within the first preset rising time, the compressor vibration is small due to the low compressor speed, resulting in a low risk of cylinder collision, and the speed can rise rapidly. Therefore, the acceleration rises at the fastest speed within the first preset rising time.

[0118] During the first preset operating time, the other equipment begins preheating operation (operating at a lower load). Therefore, setting the first preset operating time can prevent the vibration of the other equipment from affecting it.

[0119] During the second preset rising time, the risk of the compressor hitting the lever begins to increase, so the rising speed should be slower than that during the first preset rising time.

[0120] During the second preset operating time, the other equipment operates normally. Therefore, setting the second preset operating time can prevent the vibration of the other equipment from affecting it.

[0121] During the third preset rising time, the risk of the compressor hitting the lever is the greatest, so the rising speed should be slower than that during the second preset rising time.

[0122] In an optional embodiment, when a shutdown command is received, the acceleration of the compressor is adjusted according to a corresponding preset step-by-step adjustment strategy, including: controlling the acceleration of the compressor to gradually decrease according to the preset step-by-step shutdown strategy until the acceleration is zero and the compressor stops.

[0123] Under the preset tiered shutdown strategy, the controller is further configured to:

[0124] The compressor's acceleration is controlled to decrease to a third preset acceleration, and the compressor is controlled to operate at the third preset acceleration for a third preset operating time.

[0125] After the compressor operates at the third preset acceleration for a third preset operating time, the acceleration of the compressor is controlled to decrease to the fourth preset acceleration, and the compressor is controlled to operate at the fourth preset acceleration for a fourth preset operating time.

[0126] After the compressor operates at the fourth preset acceleration for the fourth preset operating time, the acceleration of the compressor is controlled to decrease to zero, and the compressor stops.

[0127] Wherein, the third preset acceleration is greater than the fourth preset acceleration, and the fourth preset acceleration is greater than zero.

[0128] Optionally, the third preset operating time is equal to the fourth preset operating time.

[0129] For example, see Figure 6 , Figure 6 This is the fifth workflow diagram of the controller provided in this embodiment of the invention, wherein the controller is used to execute steps S51 to S53:

[0130] S51. Control the acceleration of the compressor to decrease to a third preset acceleration, and control the compressor to run at the third preset acceleration for a third preset running time, then proceed to step S52.

[0131] S52. After the compressor operates at the third preset acceleration for a third preset operating time, control the acceleration of the compressor to decrease to the fourth preset acceleration, and control the compressor to operate at the fourth preset acceleration for a fourth preset operating time, and proceed to step S53.

[0132] S53. After the compressor operates at the fourth preset acceleration for the fourth preset operating time, the acceleration of the compressor is controlled to decrease to zero, and the compressor is stopped.

[0133] Understandably, to avoid abrupt compressor shutdown and cylinder collision, this embodiment sets three acceleration control points during the shutdown phase: a third preset acceleration, a fourth preset acceleration, and 0. This ensures that during shutdown, the compressor's acceleration gradually decreases from the current acceleration to the third preset acceleration, the fourth preset acceleration, and finally 0, stopping when the acceleration reaches 0. It is also understood that during each decrease, the acceleration control point can be reached abruptly or gradually.

[0134] In an optional embodiment, when a shutdown command is received, the acceleration of the compressor is adjusted according to a corresponding preset step-by-step adjustment strategy, including: controlling the acceleration of the compressor to gradually decrease according to the preset step-by-step shutdown strategy until the acceleration is zero and the compressor stops.

[0135] Under the preset tiered shutdown strategy, the controller is further configured to:

[0136] The compressor's acceleration is controlled to decrease from the current acceleration to a third preset acceleration within a first preset decreasing time, and the compressor is controlled to operate at the third preset acceleration for a third preset operating time.

[0137] After the compressor operates at the third preset acceleration for a third preset operating time, the compressor's acceleration is controlled to decrease from the third preset acceleration to the fourth preset acceleration within a second preset decreasing time, and the compressor is controlled to operate at the fourth preset acceleration for a fourth preset operating time.

[0138] After the compressor operates at the fourth preset acceleration for a fourth preset operating time, the acceleration of the compressor is controlled to decrease from the fourth preset acceleration to zero within a third preset decreasing time, and the compressor stops.

[0139] Wherein, the first preset descent duration is greater than the second preset descent duration, and the second preset descent duration is greater than the third preset descent duration.

[0140] For example, see Figure 7 , Figure 7 This is the sixth workflow diagram of the controller provided in this embodiment of the invention, wherein the controller is used to execute steps S61 to S63:

[0141] S61. Control the acceleration of the compressor to decrease from the current acceleration to the third preset acceleration within a first preset decreasing time, and control the compressor to run at the third preset acceleration for a third preset running time, then proceed to step S62.

[0142] S62. After the compressor operates at the third preset acceleration for a third preset operating time, the compressor's acceleration is controlled to decrease from the third preset acceleration to the fourth preset acceleration within a second preset decreasing time, and the compressor is controlled to operate at the fourth preset acceleration for a fourth preset operating time, proceeding to step S63.

[0143] S63. After the compressor operates at the fourth preset acceleration for a fourth preset operating time, the acceleration of the compressor is controlled to decrease from the fourth preset acceleration to zero within a third preset decreasing time, and the compressor stops.

[0144] Understandably, to further ensure the smoothness and performance of the compressor shutdown, this embodiment of the invention further divides the shutdown phase into five stages: a first preset descent time, a third preset operating time, a second preset descent time, a fourth preset operating time, and a third preset descent time. During the first preset descent time, the load is at its highest, so the descent is gradual to avoid cylinder collision due to excessively drastic changes. As the load gradually decreases, the risk of cylinder collision also decreases, so the descent time is gradually shortened when the load is low.

[0145] In an optional embodiment, the refrigerator further includes:

[0146] A compartment temperature sensor is installed inside the refrigerator compartment to detect the temperature of the compartment.

[0147] A noise sensor, installed on the compressor, is used to collect the noise during compressor operation;

[0148] Then, the controller is further configured to:

[0149] When the compressor is in a high-speed and stable operating state, the first compartment temperature detected by the compartment temperature sensor and the first operating acceleration detected by the acceleration sensor are acquired.

[0150] When the temperature of the first compartment is less than or equal to a preset compartment temperature threshold, and the first operating acceleration is greater than a preset first operating acceleration threshold, the refrigerator is controlled to generate a sound wave that is out of phase with the noise collected by the noise sensor.

[0151] Optionally, the startup acceleration threshold is greater than the first operating acceleration threshold, and the shutdown acceleration threshold is greater than the first operating acceleration threshold.

[0152] For example, see Figure 8 , Figure 8 This is the seventh workflow diagram of the controller provided in this embodiment of the invention, wherein the controller is used to execute steps S71~S72:

[0153] S71. When the compressor is in a high-speed and stable operating state, acquire the first compartment temperature detected by the compartment temperature sensor and the first operating acceleration detected by the acceleration sensor, and proceed to step S72.

[0154] S72. When the temperature of the first compartment is less than or equal to a preset compartment temperature threshold, and the first operating acceleration is greater than a preset first operating acceleration threshold, the refrigerator is controlled to generate a sound wave that is out of phase with the noise collected by the noise sensor.

[0155] It is understandable that when the compressor is operating at high speed and stably, and the refrigerator's cooling function is maintained, if the compressor's acceleration exceeds a first operating acceleration threshold, it can be determined that the compressor is generating significant noise. To reduce the noise generated by the compressor, the refrigerator is controlled to generate sound waves that are in the opposite phase to the noise detected by the noise sensor. For example, the refrigerator's active modules (vacuum module, ice maker module, humidifier module, etc.) can be controlled to generate sound waves that are in the opposite phase to the noise detected by the noise sensor, thereby reducing the noise generated by the compressor. It is also understandable that during the preheating period in defrost recovery mode, user mode, or first power-on mode, the compressor is operating at high speed and stably, and each mode may have a different first operating acceleration threshold.

[0156] In an optional embodiment, before the compressor enters a high-speed stable operating state, the controller is further configured to:

[0157] The second compartment temperature detected by the compartment temperature sensor and the second running acceleration detected by the acceleration sensor are obtained;

[0158] When the temperature of the second compartment is less than or equal to the temperature threshold of the compartment, and the second operating acceleration is greater than the preset second operating acceleration threshold, the refrigerator is controlled to generate a sound wave that is out of phase with the noise collected by the noise sensor; wherein, the first operating acceleration threshold is less than the second operating acceleration threshold.

[0159] Optionally, the startup acceleration threshold is greater than the second operating acceleration threshold, and the shutdown acceleration threshold is greater than the second operating acceleration threshold.

[0160] For example, see Figure 9 , Figure 9This is the eighth workflow diagram of the controller provided in this embodiment of the invention, wherein the controller is used to execute steps S81~S82:

[0161] S81. Obtain the second compartment temperature detected by the compartment temperature sensor and the second running acceleration detected by the acceleration sensor, and proceed to step S82;

[0162] S82. When the temperature of the second compartment is less than or equal to the temperature threshold of the compartment and the second operating acceleration is greater than the preset second operating acceleration threshold, the refrigerator is controlled to generate a sound wave that is out of phase with the noise collected by the noise sensor; wherein, the first operating acceleration threshold is less than the second operating acceleration threshold.

[0163] It is understandable that in the refrigerator's initial power-on mode, the compressor needs to preheat. Therefore, before the compressor enters the high-speed stable operation state, the second operating acceleration threshold is used to determine whether the compressor noise is too loud. As the compressor runs, after the preset preheating time, it enters the high-speed stable operation state, and the determination of operating acceleration becomes more and more stringent. A first operating acceleration threshold lower than the second operating acceleration threshold should be set to determine whether noise reduction operation is needed when the compressor is in the high-speed stable operation state.

[0164] The refrigerator provided in this invention, when receiving a start command or stop command, if the historical start acceleration and historical stop acceleration obtained meet the preset cylinder collision conditions, controls the acceleration of the compressor to be adjusted according to the corresponding preset step adjustment strategy. This allows for step adjustment of the compressor acceleration during the start-up or stop phase, thereby ensuring the stability of the compressor during the start-up and stop phases, reducing the noise generated during compressor start-up and stop, improving the reliability of the compressor, and providing a high-quality user experience.

[0165] See Figure 10 , Figure 10 This is a flowchart of a refrigerator control method provided in an embodiment of the present invention. The refrigerator includes at least an acceleration sensor disposed on the refrigerator compressor, and the refrigerator control method includes:

[0166] S1. When a start command or a stop command is received, if the historical start acceleration and historical stop acceleration obtained meet the preset cylinder collision conditions, the acceleration of the compressor is controlled to be adjusted according to the corresponding preset step adjustment strategy.

[0167] Wherein, the historical start-up acceleration is the acceleration detected by the acceleration sensor during the compressor's historical start-up phase, and the historical shutdown acceleration is the acceleration detected by the acceleration sensor during the compressor's historical shutdown phase.

[0168] It is understood that the refrigerator pre-stores response programs for start commands and / or stop commands. When a start command is received, if the historical start acceleration and historical stop acceleration meet the preset cylinder collision condition, the compressor acceleration is controlled to gradually increase according to a preset step-by-step start strategy until the preset target acceleration is reached. When a stop command is received, if the historical start acceleration and the historical stop acceleration meet the cylinder collision condition, the compressor acceleration is controlled to gradually decrease according to a preset step-by-step stop strategy until the acceleration is zero and the compressor stops.

[0169] It is understandable that when the start command is received, if the historical start acceleration and historical stop acceleration obtained meet the preset cylinder collision conditions, it means that a cylinder collision will occur during the compressor start-up phase. In order to avoid cylinder collision during the compressor start-up phase and reduce the noise generated during the compressor start-up phase, the compressor acceleration is controlled to gradually increase according to a preset step-by-step start-up strategy until the preset target acceleration is reached, and then the compressor enters the operation phase.

[0170] It is understandable that when the shutdown command is received, if the historical start-up acceleration and historical shutdown acceleration obtained meet the preset cylinder collision conditions, it indicates that a cylinder collision will occur during the compressor shutdown phase. In order to avoid cylinder collision during the compressor shutdown phase and reduce the noise generated during the compressor shutdown phase, the compressor acceleration is controlled to gradually decrease according to a preset step-by-step shutdown strategy during the compressor shutdown phase until the acceleration is zero and the compressor stops.

[0171] Optionally, the cylinder collision conditions include:

[0172] In the most recent compressor historical start-up phase, there was a situation where the historical start-up acceleration was greater than a preset start-up acceleration threshold, and the first duration was less than a first preset duration threshold; and,

[0173] In the most recent compressor historical shutdown phase, the historical shutdown acceleration was greater than a preset shutdown acceleration threshold, and the second duration was less than a second preset duration threshold.

[0174] Wherein, the first duration is the duration during which the historical startup acceleration is greater than the preset startup acceleration threshold, and the second duration is the duration during which the historical shutdown acceleration is greater than the preset shutdown acceleration threshold.

[0175] Specifically, in the previous compressor historical start-up phase, if the historical start-up acceleration is greater than a preset start-up acceleration threshold and the first duration is less than a first preset duration threshold, and in the previous compressor historical shutdown phase, if the historical shutdown acceleration is greater than a preset shutdown acceleration threshold and the second duration is less than a second preset duration threshold, then it is determined that the cylinder collision condition is met. At this time, when a compressor start / stop command is received, a stepped start / stop strategy is adopted for the current start / stop phase. Optionally, the first preset duration threshold is 10s, and the second preset duration threshold is 10s; preferably, the first preset duration threshold is 2s, and the second preset duration threshold is 2s.

[0176] For example, during the historical start-up phase of the previous compressor, if the historical start-up acceleration exceeds the preset start-up acceleration threshold and the duration of the historical start-up acceleration exceeding the preset start-up acceleration threshold is less than 2 seconds, it indicates that the start-up acceleration exceeding the threshold is an occasional phenomenon, and it is very likely that a cylinder collision has occurred.

[0177] For the previous compressor's historical shutdown phase, if the historical shutdown acceleration exceeds the preset shutdown acceleration threshold, and the duration of the historical shutdown acceleration exceeding the preset shutdown acceleration threshold is less than 2 seconds, it indicates that the shutdown acceleration exceeding the threshold is an occasional phenomenon, and it is very likely that a cylinder collision has occurred.

[0178] Optionally, the cylinder collision conditions include:

[0179] In several recent compressor historical start-up phases, for each compressor historical start-up phase, there was a situation where the historical start-up acceleration was greater than a preset start-up acceleration threshold, and the first duration was less than a first preset duration threshold; and,

[0180] In the recent compressor historical shutdown phases, for each compressor historical shutdown phase, there is a historical shutdown acceleration greater than a preset shutdown acceleration threshold, and the second duration is less than a second preset duration threshold.

[0181] Wherein, the first duration is the duration during which the historical startup acceleration is greater than the preset startup acceleration threshold, and the second duration is the duration during which the historical shutdown acceleration is greater than the preset shutdown acceleration threshold.

[0182] It is understandable that judging cylinder collision phenomenon based on only one start-stop phase may lead to certain misjudgments. To avoid misjudgments, this embodiment of the invention judges the start / stop acceleration and duration for several consecutive start-stop phases. If, in several consecutive start-stop phases, the start-stop acceleration in each phase is greater than a preset start-stop acceleration threshold, and the duration of the historical start-stop acceleration being greater than the preset start-stop acceleration threshold is less than a first preset duration threshold, and in several consecutive stop-stop phases, the historical stop-stop acceleration in each phase is greater than a preset stop-stop acceleration threshold, and the duration of the historical stop-stop acceleration being greater than the preset stop-stop acceleration threshold is less than a second preset duration threshold, then it indicates that cylinder collision phenomenon will occur during the start / stop phase. To avoid the occurrence of cylinder collision phenomenon and reduce the noise generated during the compressor start-stop phase, the compressor acceleration is controlled to start according to a preset stepped start-up strategy, and the compressor acceleration is controlled to stop according to a preset stepped stop-stop strategy.

[0183] Optionally, when a start command is received, the acceleration of the compressor is adjusted according to a corresponding preset step adjustment strategy, including: controlling the acceleration of the compressor to gradually increase according to the preset step start strategy until the preset target acceleration is reached.

[0184] The refrigerator control method further includes, under the preset tiered start-up strategy:

[0185] The compressor's acceleration is controlled to rise to a first preset acceleration, and the compressor is controlled to operate at the first preset acceleration for a first preset operating time.

[0186] After the compressor operates at the first preset acceleration for a first preset operating time, the acceleration of the compressor is controlled to increase to a second preset acceleration, and the compressor is controlled to operate at the second preset acceleration for a second preset operating time.

[0187] After the compressor operates at the second preset acceleration for a second preset operating time, the acceleration of the compressor is controlled to increase to a preset target acceleration;

[0188] Wherein, the first preset acceleration is less than the second preset acceleration, and the second preset acceleration is less than the target acceleration.

[0189] Optionally, the first preset operating time is equal to the second preset operating time.

[0190] Understandably, to avoid the compressor suddenly operating at high speed during startup and causing cylinder collision, this embodiment sets three acceleration control points during the startup phase: a first preset acceleration, a second preset acceleration, and a target acceleration. This ensures that during startup, the compressor's acceleration starts from 0 and gradually increases to the first preset acceleration, the second preset acceleration, and the target acceleration, ultimately reaching the target acceleration before entering the compressor's operating phase. It is also understood that during each increase, the acceleration control point can be reached immediately or gradually.

[0191] Optionally, when a start command is received, the acceleration of the compressor is adjusted according to a corresponding preset step adjustment strategy, including: controlling the acceleration of the compressor to gradually increase according to the preset step start strategy until the preset target acceleration is reached.

[0192] The refrigerator control method further includes, under the preset tiered start-up strategy:

[0193] The compressor's acceleration is controlled to rise uniformly from zero to the first preset acceleration within a first preset rising time, and the compressor is controlled to operate at the first preset acceleration for a first preset operating time.

[0194] After the compressor operates at the first preset acceleration for a first preset operating time, the compressor's acceleration is controlled to increase uniformly from the first preset acceleration to the second preset acceleration within a second preset rising time, and the compressor is controlled to operate at the second preset acceleration for a second preset operating time.

[0195] After the compressor operates at the second preset acceleration for a second preset operating time, the acceleration of the compressor is controlled to rise uniformly from the second preset acceleration to the preset target acceleration within a third preset rising time.

[0196] Wherein, the first preset rise time is less than the second preset rise time, and the second preset rise time is less than the third preset rise time.

[0197] It is understandable that, in order to further ensure the smoothness of compressor startup and working performance, the startup phase is further divided into five phases in this embodiment of the invention, namely, the first preset rise time, the first preset operation time, the second preset rise time, the second preset operation time, and the third preset rise time.

[0198] Within the first preset rising time, the compressor vibration is small due to the low compressor speed, resulting in a low risk of cylinder collision, and the speed can rise rapidly. Therefore, the acceleration rises at the fastest speed within the first preset rising time.

[0199] During the first preset operating time, the other equipment begins preheating operation (operating at a lower load). Therefore, setting the first preset operating time can prevent the vibration of the other equipment from affecting it.

[0200] During the second preset rising time, the risk of the compressor hitting the lever begins to increase, so the rising speed should be slower than that during the first preset rising time.

[0201] During the second preset operating time, the other equipment operates normally. Therefore, setting the second preset operating time can prevent the vibration of the other equipment from affecting it.

[0202] During the third preset rising time, the risk of the compressor hitting the lever is the greatest, so the rising speed should be slower than that during the second preset rising time.

[0203] Optionally, when a shutdown command is received, the acceleration of the compressor is adjusted according to a corresponding preset step-by-step adjustment strategy, including: controlling the acceleration of the compressor to gradually decrease according to the preset step-by-step shutdown strategy until the acceleration is zero and the compressor stops.

[0204] Among them, under the preset tiered shutdown strategy, the refrigerator control method further includes:

[0205] The compressor's acceleration is controlled to decrease to a third preset acceleration, and the compressor is controlled to operate at the third preset acceleration for a third preset operating time.

[0206] After the compressor operates at the third preset acceleration for a third preset operating time, the acceleration of the compressor is controlled to decrease to the fourth preset acceleration, and the compressor is controlled to operate at the fourth preset acceleration for a fourth preset operating time.

[0207] After the compressor operates at the fourth preset acceleration for the fourth preset operating time, the acceleration of the compressor is controlled to decrease to zero, and the compressor stops.

[0208] Wherein, the third preset acceleration is greater than the fourth preset acceleration, and the fourth preset acceleration is greater than zero.

[0209] Optionally, the third preset operating time is equal to the fourth preset operating time.

[0210] Understandably, to avoid abrupt compressor shutdown and cylinder collision, this embodiment sets three acceleration control points during the shutdown phase: a third preset acceleration, a fourth preset acceleration, and 0. This ensures that during shutdown, the compressor's acceleration gradually decreases from the current acceleration to the third preset acceleration, the fourth preset acceleration, and finally 0, stopping when the acceleration reaches 0. It is also understood that during each decrease, the acceleration control point can be reached abruptly or gradually.

[0211] Optionally, when a shutdown command is received, the acceleration of the compressor is adjusted according to a corresponding preset step-by-step adjustment strategy, including: controlling the acceleration of the compressor to gradually decrease according to the preset step-by-step shutdown strategy until the acceleration is zero and the compressor stops.

[0212] Among them, under the preset tiered shutdown strategy, the refrigerator control method further includes:

[0213] The compressor's acceleration is controlled to decrease from the current acceleration to a third preset acceleration within a first preset decreasing time, and the compressor is controlled to operate at the third preset acceleration for a third preset operating time.

[0214] After the compressor operates at the third preset acceleration for a third preset operating time, the compressor's acceleration is controlled to decrease from the third preset acceleration to the fourth preset acceleration within a second preset decreasing time, and the compressor is controlled to operate at the fourth preset acceleration for a fourth preset operating time.

[0215] After the compressor operates at the fourth preset acceleration for a fourth preset operating time, the acceleration of the compressor is controlled to decrease from the fourth preset acceleration to zero within a third preset decreasing time, and the compressor stops.

[0216] Wherein, the first preset descent duration is greater than the second preset descent duration, and the second preset descent duration is greater than the third preset descent duration.

[0217] Understandably, to further ensure the smoothness and performance of the compressor shutdown, this embodiment of the invention further divides the shutdown phase into five stages: a first preset descent time, a third preset operating time, a second preset descent time, a fourth preset operating time, and a third preset descent time. During the first preset descent time, the load is at its highest, so the descent is gradual to avoid cylinder collision due to excessively drastic changes. As the load gradually decreases, the risk of cylinder collision also decreases, so the descent time is gradually shortened when the load is low.

[0218] Optionally, the refrigerator further includes:

[0219] A compartment temperature sensor is installed inside the refrigerator compartment to detect the temperature of the compartment.

[0220] A noise sensor, installed on the compressor, is used to collect the noise during compressor operation;

[0221] Therefore, the control method for the refrigerator further includes:

[0222] When the compressor is in a high-speed and stable operating state, the first compartment temperature detected by the compartment temperature sensor and the first operating acceleration detected by the acceleration sensor are acquired.

[0223] When the temperature of the first compartment is less than or equal to a preset compartment temperature threshold, and the first operating acceleration is greater than a preset first operating acceleration threshold, the refrigerator is controlled to generate a sound wave that is out of phase with the noise collected by the noise sensor.

[0224] Optionally, the startup acceleration threshold is greater than the first operating acceleration threshold, and the shutdown acceleration threshold is greater than the first operating acceleration threshold.

[0225] It is understandable that when the compressor is operating at high speed and stably, and the refrigerator's cooling function is maintained, if the compressor's acceleration exceeds a first operating acceleration threshold, it can be determined that the compressor is generating significant noise. To reduce the noise generated by the compressor, the refrigerator is controlled to generate sound waves that are in the opposite phase to the noise detected by the noise sensor. For example, the refrigerator's active modules (vacuum module, ice maker module, humidifier module, etc.) can be controlled to generate sound waves that are in the opposite phase to the noise detected by the noise sensor, thereby reducing the noise generated by the compressor. It is also understandable that during the preheating period in defrost recovery mode, user mode, or first power-on mode, the compressor is operating at high speed and stably, and each mode may have a different first operating acceleration threshold.

[0226] Optionally, before the compressor enters a high-speed stable operating state, the refrigerator control method further includes:

[0227] The second compartment temperature detected by the compartment temperature sensor and the second running acceleration detected by the acceleration sensor are obtained;

[0228] When the temperature of the second compartment is less than or equal to the temperature threshold of the compartment, and the second operating acceleration is greater than the preset second operating acceleration threshold, the refrigerator is controlled to generate a sound wave that is out of phase with the noise collected by the noise sensor; wherein, the first operating acceleration threshold is less than the second operating acceleration threshold.

[0229] Optionally, the startup acceleration threshold is greater than the second operating acceleration threshold, and the shutdown acceleration threshold is greater than the second operating acceleration threshold.

[0230] It is understandable that in the refrigerator's initial power-on mode, the compressor needs to preheat. Therefore, before the compressor enters the high-speed stable operation state, the second operating acceleration threshold is used to determine whether the compressor noise is too loud. As the compressor runs, after the preset preheating time, it enters the high-speed stable operation state, and the determination of operating acceleration becomes more and more stringent. A first operating acceleration threshold lower than the second operating acceleration threshold should be set to determine whether noise reduction operation is needed when the compressor is in the high-speed stable operation state.

[0231] This invention provides a refrigerator control method that, upon receiving a start command or stop command, if the historical start acceleration and historical stop acceleration meet preset cylinder collision conditions, controls the compressor acceleration to be adjusted according to a corresponding preset step-by-step adjustment strategy. This allows for step-by-step adjustment of the compressor acceleration during the start-up or stop phase, thereby ensuring the compressor's stability during start-up and stop phases, reducing noise generated during compressor start-up and stop, improving compressor reliability, and providing a superior user experience.

[0232] 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 by comprising: The method comprises the following steps: a cabinet, which serves as a support structure of a refrigerator, has a compressor arranged inside; an acceleration sensor is arranged on the compressor and is used to detect the acceleration of the compressor; a controller is used to: when a start instruction or a stop instruction is received, if the obtained historical start acceleration and historical stop acceleration meet a preset cylinder collision condition, the acceleration of the compressor is controlled to be adjusted according to a corresponding preset stepwise adjustment strategy; wherein the historical start acceleration is the acceleration detected by the acceleration sensor during a historical start phase of the compressor, the historical stop acceleration is the acceleration detected by the acceleration sensor during a historical stop phase of the compressor, the preset stepwise adjustment strategy corresponding to the start instruction is to gradually increase the acceleration of the compressor according to a preset stepwise start strategy until a preset target acceleration is reached, and the preset stepwise adjustment strategy corresponding to the stop instruction is to gradually decrease the acceleration of the compressor according to a preset stepwise stop strategy until the acceleration is zero and the compressor stops.

2. The refrigerator according to claim 1, wherein, The cylinder collision condition comprises: in the last historical start phase of the compressor, there is the historical start acceleration greater than a preset start acceleration threshold value, and a first duration less than a first preset duration threshold value; and in the last historical stop phase of the compressor, there is the historical stop acceleration greater than a preset stop acceleration threshold value, and a second duration less than a second preset duration threshold value; wherein the first duration is the duration during which the historical start acceleration is greater than the preset start acceleration threshold value, and the second duration is the duration during which the historical stop acceleration is greater than the preset stop acceleration threshold value.

3. The refrigerator according to claim 1, wherein The cylinder collision condition comprises: in the last several historical start phases of the compressor, for each historical start phase of the compressor, there is the historical start acceleration greater than a preset start acceleration threshold value, and a first duration less than a first preset duration threshold value; and in the last several historical stop phases of the compressor, for each historical stop phase of the compressor, there is the historical stop acceleration greater than a preset stop acceleration threshold value, and a second duration less than a second preset duration threshold value; wherein the first duration is the duration during which the historical start acceleration is greater than the preset start acceleration threshold value, and the second duration is the duration during which the historical stop acceleration is greater than the preset stop acceleration threshold value.

4. The refrigerator according to claim 1, wherein When the start instruction is received, the acceleration of the compressor is controlled to be adjusted according to the corresponding preset stepwise adjustment strategy, which comprises gradually increasing the acceleration of the compressor according to a preset stepwise start strategy until a preset target acceleration is reached; wherein under the preset stepwise start strategy, the controller is further used to: control the acceleration of the compressor to rise to a first preset acceleration, and control the compressor to operate at the first preset acceleration for a first preset operation duration; after the compressor runs at the first preset acceleration for the first preset running duration, the acceleration of the compressor is controlled to rise to a second preset acceleration at a second preset rising duration, and the compressor is controlled to run at the second preset acceleration for a second preset running duration; after the compressor runs at the second preset acceleration for the second preset running duration, the acceleration of the compressor is controlled to rise to a preset target acceleration; wherein the first preset acceleration is less than the second preset acceleration, and the second preset acceleration is less than the target acceleration.

5. The refrigerator according to claim 1, wherein When the start instruction is received, the controller controls the acceleration of the compressor to be adjusted according to a preset stepwise adjustment strategy, including: controlling the acceleration of the compressor to gradually rise according to a preset stepwise start strategy until the preset target acceleration is reached. wherein, under the preset stepwise start strategy, the controller is further configured to: control the acceleration of the compressor to uniformly rise from zero to a first preset acceleration within a first preset rising duration, and control the compressor to run at the first preset acceleration for a first preset running duration; after the compressor runs at the first preset acceleration for the first preset running duration, control the acceleration of the compressor to uniformly rise from the first preset acceleration to a second preset acceleration within a second preset rising duration, and control the compressor to run at the second preset acceleration for a second preset running duration; after the compressor runs at the second preset acceleration for the second preset running duration, control the acceleration of the compressor to uniformly rise from the second preset acceleration to a preset target acceleration within a third preset rising duration; wherein the first preset rising duration is less than the second preset rising duration, and the second preset rising duration is less than the third preset rising duration.

6. The refrigerator according to claim 1, wherein When the stop instruction is received, the controller controls the acceleration of the compressor to be adjusted according to a preset stepwise adjustment strategy, including: controlling the acceleration of the compressor to gradually decrease according to a preset stepwise stop strategy until the acceleration is zero and the compressor stops. wherein, under the preset stepwise stop strategy, the controller is further configured to: control the acceleration of the compressor to decrease to a third preset acceleration, and control the compressor to run at the third preset acceleration for a third preset running duration; after the compressor runs at the third preset acceleration for the third preset running duration, control the acceleration of the compressor to decrease to a fourth preset acceleration, and control the compressor to run at the fourth preset acceleration for a fourth preset running duration; after the compressor runs at the fourth preset acceleration for the fourth preset running duration, control the acceleration of the compressor to decrease to zero, and the compressor stops; wherein the third preset acceleration is greater than the fourth preset acceleration, and the fourth preset acceleration is greater than zero.

7. The refrigerator according to claim 1, wherein When receiving the stop command, the controller adjusts the acceleration of the compressor according to a preset stepwise adjustment strategy, including: gradually reducing the acceleration of the compressor according to a preset stepwise stop strategy until the acceleration is zero and the compressor stops. In the preset stepwise stop strategy, the controller is further configured to: control the acceleration of the compressor to decrease from the current acceleration to a third preset acceleration within a first preset decrease duration, and control the compressor to operate at the third preset acceleration for a third preset operation duration; after the compressor operates at the third preset acceleration for the third preset operation duration, control the acceleration of the compressor to decrease from the third preset acceleration to a fourth preset acceleration within a second preset decrease duration, and control the compressor to operate at the fourth preset acceleration for a fourth preset operation duration; after the compressor operates at the fourth preset acceleration for the fourth preset operation duration, control the acceleration of the compressor to decrease from the fourth preset acceleration to zero within a third preset decrease duration, and the compressor stops; wherein the first preset decrease duration is greater than the second preset decrease duration, and the second preset decrease duration is greater than the third preset decrease duration.

8. The refrigerator according to claim 1, wherein The refrigerator further comprises: a chamber temperature sensor arranged in the chamber of the refrigerator for detecting the temperature of the chamber; a noise sensor arranged on the compressor for collecting noise when the compressor is running; The controller is further configured to: when the compressor is in a high-speed stable operation state, obtain a first chamber temperature detected by the chamber temperature sensor and a first running acceleration detected by the acceleration sensor; when the first chamber temperature is less than or equal to a preset chamber temperature threshold value, and the first running acceleration is greater than a preset first running acceleration threshold value, the refrigerator generates a sound wave opposite to the noise collected by the noise sensor.

9. The refrigerator according to claim 8, wherein Before the compressor enters the high-speed stable operation state, the controller is further configured to: obtain a second chamber temperature detected by the chamber temperature sensor and a second running acceleration detected by the acceleration sensor; when the second chamber temperature is less than or equal to the chamber temperature threshold value, and the second running acceleration is greater than a preset second running acceleration threshold value, the refrigerator generates a sound wave opposite to the noise collected by the noise sensor; wherein the first running acceleration threshold value is less than the second running acceleration threshold value. 10.A control method of a refrigerator, characterized by, The refrigerator at least comprises an acceleration sensor arranged on the compressor of the refrigerator, and the control method of the refrigerator comprises: when receiving a start command or a stop command, if the obtained historical start acceleration and historical stop acceleration satisfy a preset cylinder collision condition, the acceleration of the compressor is adjusted according to a preset stepwise adjustment strategy corresponding to the start command or the stop command. The historical start-up acceleration is an acceleration detected by the acceleration sensor during a historical start-up stage of the compressor, and the historical stop acceleration is an acceleration detected by the acceleration sensor during a historical stop stage of the compressor; the preset step adjustment strategy corresponding to the start-up instruction is that the acceleration of the compressor is gradually increased according to a preset step start-up strategy until a preset target acceleration is reached, and the preset step adjustment strategy corresponding to the stop instruction is that the acceleration of the compressor is gradually decreased according to a preset step stop strategy until the acceleration is zero and the compressor is stopped.

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