Refrigerator and method for evaluating noise of the same

Abstract

The application discloses a refrigerator and a noise evaluation method thereof. In the stable operation or high-load operation stage of the refrigerator, noise evaluation is performed on the overall operation of the refrigerator, the single operation of the compressor and the operation stage of the compressor and a single fan, respectively. The noise evaluation result of qualified or unqualified noise can be manually input, and the noise evaluation is more in line with the perception of the human ear. In the product design stage, the perceptual noise of the product under various operating conditions is identified, and then the operation condition of the product is evaluated according to the identified perceptual noise. If the product is unqualified, the noise problem position is determined, and the developer is helped to better design a new product.

Description

Technical Field

[0001] This invention relates to the field of refrigerator technology, and in particular to a refrigerator and a method for evaluating its noise. Background Technology

[0002] The main sources of noise in refrigerators are the compressor and fan noise during operation. While noise assessment during the product design phase is termed sound power evaluation, even products meeting noise standards may still exhibit noise issues. This is because the proportion of noise at different frequencies varies, affecting human perception. For example, high-frequency noise is sharp and piercing, and even small values ​​can be annoying to users. As a household appliance operating 24 / 7, the noise performance of refrigerators is easily perceived by users. Current refrigerator noise reduction designs primarily rely on single noise power metrics measured by laboratory sensors. However, this single noise power metric cannot accurately reflect the refrigerator's sound quality, resulting in inaccurate noise data and hindering developers from effectively addressing noise issues based on human perception. Summary of the Invention

[0003] The purpose of this invention is to provide a refrigerator and its noise reduction method. By identifying the perceived noise level of the product under various operating conditions during the product design stage, and then evaluating the product's operation based on the identified perceived noise level, the location of the noise problem will be determined if the product is not up to standard, thus helping developers to better design new products.

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

[0005] A box body, in which a storage compartment is formed, the storage compartment including at least a refrigerator compartment and a freezer compartment;

[0006] A door is provided at the opening of the storage room for opening and closing the storage room;

[0007] The compressor, located inside the housing, is used to compress the refrigerant flowing through the refrigerator's refrigeration cycle, providing power for the refrigeration cycle.

[0008] The fan, located inside the housing, includes a refrigeration fan for conveying the cold air generated in the refrigeration cycle to the refrigerator compartment, a refrigeration fan for conveying the cold air generated in the refrigeration cycle to the freezer compartment, and a bottom cooling fan for cooling the condenser and compressor compartments in the refrigerator.

[0009] The controller is configured as follows:

[0010] After detecting that the refrigerator has entered a stable operation phase or a high-load operation phase, the refrigerator's overall noise evaluation window is displayed on the refrigerator's monitor to receive the overall noise evaluation results input by the user.

[0011] When the overall noise level evaluation result is found to be unqualified, the refrigerator displays the individual noise level evaluation window for the current refrigerator on the refrigerator's display to receive the individual noise level evaluation result input by the user; wherein, during the overall noise level evaluation process, both the compressor and the fan are in the running stage; during the individual noise level evaluation process, only the compressor is running, or only the compressor and one of the fans are running.

[0012] The overall noise evaluation results and the individual noise evaluation results are integrated.

[0013] As an improvement to the above solution, when the overall noise level evaluation result is detected as unqualified, the controller is further configured to:

[0014] Control all fans to shut down and display a compressor-based unit noise level evaluation window on the display to receive user-input compressor-based unit noise level evaluation results;

[0015] When the unit noise level evaluation result based on the compressor is detected as qualified, the compressor is kept running, and the refrigeration fan, the freezing fan and the bottom cooling fan are controlled to operate only one at a time. The unit noise level evaluation window based on a single fan is displayed on the display to receive the unit noise level evaluation result based on a single fan input by the user.

[0016] As an improvement to the above solution, the refrigerator further includes:

[0017] An application module includes at least one of a vacuum module, an ice-making module, and a humidification module; wherein the vacuum module is used to perform a vacuuming operation on the vacuum drawer in the refrigerator, the ice-making module is used to make ice cubes, and the humidification module is used to perform a humidification operation on the storage compartment.

[0018] Then, the controller is further configured to:

[0019] The compressor and all fans are shut down, and the application module is started. The unit noise evaluation window based on the application module is displayed on the monitor to receive the unit noise evaluation results based on the application module input by the user.

[0020] The system controls the application module to stop and controls the compressor and all fans to start. When the overall noise level evaluation result is deemed qualified, the system starts the application module and displays the individual noise level evaluation window based on the application module on the display to receive the individual noise level evaluation result based on the application module input by the user.

[0021] As an improvement to the above solution, the step of displaying a unit noise level evaluation window based on the application module on the display to receive the unit noise level evaluation result based on the application module input by the user includes:

[0022] If there is only one application module, control the application module to start, and display the unit noise evaluation window of the current application module on the display to receive the unit noise evaluation result based on the current application module input by the user.

[0023] If there are at least two application modules, control at least two application modules to operate only one at a time, and display the unit noise evaluation window based on the single application module on the display to receive the unit noise evaluation result based on the single application module input by the user.

[0024] As an improvement to the above solution, the controller is further configured to:

[0025] When the current time is detected to be within a preset nighttime period, additional weighted noise is added to the noise currently emitted by the refrigerator.

[0026] As an improvement to the above solution, the refrigerator further includes:

[0027] An ambient temperature sensor, located outside the refrigerator, is used to detect the ambient temperature of the environment in which the refrigerator is located.

[0028] The controller is also configured to:

[0029] The system acquires the real-time ambient temperature and controls the rotational speed of the compressor and the fan based on the real-time ambient temperature.

[0030] To achieve the above objectives, this invention also provides a method for evaluating the noise of a refrigerator. The refrigerator includes a refrigeration fan for delivering cold air generated in the refrigeration cycle to the refrigerator compartment, a refrigeration fan for delivering cold air generated in the refrigeration cycle to the freezer compartment, and a bottom-cooling fan for cooling the condenser and compressor compartments of the refrigerator. The method includes:

[0031] After detecting that the refrigerator has entered a stable operation phase or a high-load operation phase, the refrigerator's overall noise evaluation window is displayed on the refrigerator's monitor to receive the overall noise evaluation results input by the user.

[0032] When the overall noise level evaluation result is found to be unqualified, the individual noise level evaluation window of the refrigerator is displayed on the refrigerator's monitor to receive the individual noise level evaluation result input by the user; wherein, during the overall noise level evaluation process, the compressor and all fans are in the running stage; during the individual noise level evaluation process, only the compressor is running, or only the compressor and one of the fans are running.

[0033] The overall noise evaluation results and the individual noise evaluation results are integrated.

[0034] As an improvement to the above solution, when the overall noise level evaluation result is detected as unqualified, the individual unit noise level evaluation window of the current refrigerator is displayed on the refrigerator's monitor to receive the individual unit noise level evaluation result input by the user, including:

[0035] Control all fans to shut down and display a compressor-based unit noise level evaluation window on the display to receive user-input compressor-based unit noise level evaluation results;

[0036] When the unit noise level evaluation result based on the compressor is detected as qualified, the compressor is kept running, and the refrigeration fan, the freezing fan and the bottom cooling fan are controlled to operate only one at a time. The unit noise level evaluation window based on a single fan is displayed on the display to receive the unit noise level evaluation result based on a single fan input by the user.

[0037] As an improvement to the above solution, the method further includes:

[0038] When the current time is detected to be within a preset nighttime period, additional weighted noise is added to the noise currently emitted by the refrigerator.

[0039] As an improvement to the above solution, the method further includes:

[0040] The system acquires the real-time ambient temperature and controls the rotation speed of the compressor, the refrigeration fan, and the freezing fan based on the real-time ambient temperature.

[0041] Compared to existing technologies, the refrigerator and its noise evaluation method disclosed in this invention perform noise evaluations separately for the overall operation of the refrigerator, the operation of the compressor alone, and the operation of the compressor and a single fan during the stable or high-load operation phases of the refrigerator. The evaluation results, which allow for manual input of acceptable or unacceptable noise levels, are more consistent with human hearing in noise perception. By identifying the perceived noise level of the product under various operating conditions during the product design phase, and then evaluating the product's operation based on the identified perceived noise levels, the location of noise problems is determined if the product fails to meet the standards, thus helping developers to better design new products. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the external structure of a refrigerator provided in an embodiment of the present invention;

[0043] Figure 2 This is a schematic diagram of the structure of a refrigeration system in a refrigerator provided in an embodiment of the present invention;

[0044] Figure 3 This is a schematic diagram of information interaction between the controller in a refrigerator provided in an embodiment of the present invention;

[0045] Figure 4 This is a schematic diagram showing the location of a low-temperature cooling fan in a refrigerator according to an embodiment of the present invention;

[0046] Figure 5 This is a first working diagram of a controller in a refrigerator provided by an embodiment of the present invention;

[0047] Figure 6 This is a second working flowchart of a controller in a refrigerator provided in an embodiment of the present invention;

[0048] Figure 7 This is a third working flowchart of a controller in a refrigerator provided by an embodiment of the present invention;

[0049] Figure 8 This is a fourth workflow diagram of a controller in a refrigerator provided in an embodiment of the present invention;

[0050] Figure 9 This is a fifth workflow diagram of a controller in a refrigerator provided in an embodiment of the present invention;

[0051] Figure 10 This is a schematic diagram illustrating information interaction between the refrigerator and the client according to an embodiment of the present invention;

[0052] Figure 11 This is a flowchart of a noise evaluation method for a refrigerator provided in an embodiment of the present invention.

[0053] Among them, 100 is the refrigerator; 200 is the client; 300 is the router; 400 is the cloud server; 1 is the compressor; 2 is the condenser; 3 is the anti-condensation pipe; 4 is the dryer filter; 5 is the capillary tube; 6 is the evaporator; 7 is the gas-liquid separator; 8 is the refrigeration fan; 9 is the freezing fan; 10 is the bottom cooling fan; and 11 is the application module. Detailed Implementation

[0054] 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.

[0055] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0056] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "multiple" means two or more.

[0057] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0058] See Figure 1 , Figure 1This is a schematic diagram of the external structure of a refrigerator 100 according to an embodiment of the present invention. The refrigerator 100 of this embodiment has an approximately rectangular shape. The refrigerator includes a cabinet defining a storage space and multiple doors located at the opening of the cabinet. Each door includes a door shell located on the outside of the cabinet, a door inner liner located on the inside of the cabinet, 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 has chambers, including a compressor compartment for placing refrigerator components, such as storing the compressor, and storage space for storing food, etc. The storage space can be divided into multiple storage compartments, which can be configured as refrigerator compartments, freezer compartments, vacuum compartments, etc., depending on their purpose. Each storage compartment corresponds to one or more doors; for example, the upper storage compartment has double doors. The doors can be pivotally mounted at the opening of the cabinet or can be drawer-type openings to achieve drawer-type storage. The opening of the storage compartment is equipped with a door seal, which is used to ensure that the door and the opening of the storage compartment are in close contact when the door is closed.

[0059] See Figure 2 , Figure 2 This is a schematic diagram of the refrigeration system in the refrigerator 100 provided in an embodiment of the present invention. The refrigeration system includes a compressor 1, a condenser 2, an anti-condensation pipe 3, a dryer filter 4, a capillary tube 5, an evaporator 6, and a gas-liquid separator 7. The working process of the refrigeration system includes a compression process, a condensation process, a throttling process, and an evaporation process.

[0060] The compression process is as follows: When the refrigerator power cord is plugged in and the thermostat contacts are closed, compressor 1 starts working. Low-temperature, low-pressure refrigerant is drawn into compressor 1 and compressed into high-temperature, high-pressure superheated gas within the compressor 1 cylinder before being discharged into condenser 2. The condensation process is as follows: The high-temperature, high-pressure refrigerant gas dissipates heat through condenser 2, its temperature continuously decreasing until it is gradually cooled into room-temperature, high-pressure saturated vapor, and further cooled into saturated liquid. The temperature at this point no longer decreases; this temperature is called the condensation temperature. The pressure of the refrigerant remains almost constant throughout the entire condensation process. (Throttling) The process is as follows: After condensation, the saturated liquid refrigerant flows into the capillary tube 5 after the moisture and impurities are removed by the dryer filter 4. The capillary tube 5 then throttles and reduces the pressure, turning the refrigerant into a room-temperature, low-pressure wet vapor. The evaporation process is as follows: The room-temperature, low-pressure wet vapor begins to absorb heat and vaporize in the evaporator 6, which not only lowers the temperature of the evaporator and its surroundings but also turns the refrigerant into a low-temperature, low-pressure gas. The refrigerant coming out of the evaporator 6 passes through the gas-liquid separator 7 and returns to the compressor 1. The above process is repeated to transfer the heat inside the refrigerator to the outside air, thus achieving the purpose of refrigeration.

[0061] See Figure 3 , Figure 3This is a schematic diagram of information interaction in a refrigerator controller 10 provided in an embodiment of the present invention. The refrigerator 100 has fans including a refrigerator fan 8, a freezer fan 9, and a low-cooling fan 10. The controller 10 is connected to the compressor 1, refrigerator fan 8, freezer fan 9, low-cooling fan 10, and application module 11 in the refrigerator 100. The refrigerator fan 8 is used to deliver the cold air generated in the refrigeration cycle to the refrigerator compartment; the freezer fan 9 is used to deliver the cold air generated in the refrigeration cycle to the freezer compartment; and the low-cooling fan 10 is used to cool the condenser and compressor compartment in the refrigerator. The application module 11 includes at least one of a vacuum module, an ice-making module, and a humidification module. The vacuum module is used to vacuum the vacuum drawer in the refrigerator; for example, the vacuum module is a vacuum pump, which keeps the vacuum drawer in a vacuum state during operation. The ice-making module is an ice maker, which makes ice cubes. The humidification module is used to humidify the storage compartment. The application module also generates considerable noise during operation.

[0062] Figure 4 , Figure 4 This is a schematic diagram of the location of the low-cooling fan 10 in the refrigerator provided in an embodiment of the present invention. The low-cooling fan 10 is used to make cold air exchange heat through the condenser 2 and send the heat-absorbing air to the outside of the compressor compartment.

[0063] Specifically, the controller in the refrigerator is configured to: upon detecting that the refrigerator has entered a stable operation phase or a high-load operation phase, display an overall noise evaluation window of the current refrigerator on the refrigerator's display to receive the overall noise evaluation result input by the user; when the overall noise evaluation result is detected to be unqualified, display an individual noise evaluation window of the current refrigerator on the refrigerator's display to receive the individual noise evaluation result input by the user; wherein, during the overall noise evaluation process, both the compressor and the fan are in the running phase; during the individual noise evaluation process, only the compressor operates, or only the compressor and one of the fans operate; and integrate the overall noise evaluation result and the individual noise evaluation result.

[0064] For example, see Figure 5 , Figure 5This is a first workflow diagram of a controller in a refrigerator provided by an embodiment of the present invention. The controller is configured to execute steps S11 to S17. In step S11, stable operation of the refrigerator is the mode most frequently encountered by users. Therefore, it is very important to evaluate the perceived noise level during stable operation. The logic for determining whether the refrigerator is in stable operation is: that is, the refrigerator itself is a cool refrigerator and does not require high-intensity refrigeration to lower the temperature, so it is in stable operation. When the refrigerator is running stably, the compressor and all fans are operating. At this time, the refrigerator's display shows an overall noise level evaluation window. For example, the display window can present evaluation result options, such as "Pass" and "Fail". Developers can determine whether the noise level of the refrigerator during stable operation is acceptable based on the noise perceived by their own ears. If it is acceptable, the overall noise level evaluation result input by the user is received. At this time, there is no need to perform individual operating noise judgment, indicating that the overall noise of the refrigerator is not very high, that is, the noise is acceptable to the human ear even when the compressor and all fans are running. If it is unacceptable, it indicates that the overall noise of the refrigerator is relatively high, that is, the noise is unacceptable to the human ear even when the compressor and all fans are running. At this time, the individual operating noise judgment stage is entered. At this time, only the compressor is running, or only the compressor and one of the fans are running. The components with higher noise (such as the compressor or one of the fans) are selected. Finally, the results are summarized to help developers locate the components with excessive noise, and subsequent testing can be performed to see if this component is faulty.

[0065] Furthermore, high load mainly depends on the temperature of the box compartment. If the compartment temperature is high and the box is hot, then it needs to enter high load mode to accelerate cooling. The main high load cycles are the first power-on cycle and the defrost recovery period.

[0066] Specifically, when the overall noise level evaluation result is detected as unqualified, the controller is further configured to: control all fans to stop and display a compressor-based individual noise level evaluation window on the display to receive the compressor-based individual noise level evaluation result input by the user; when the compressor-based individual noise level evaluation result is detected as qualified, keep the compressor running and sequentially control only one of the refrigeration fan, the freezing fan and the bottom cooling fan to run, and display a single fan-based individual noise level evaluation window on the display to receive the single fan-based individual noise level evaluation result input by the user.

[0067] For example, see Figure 6 , Figure 6This is a second workflow diagram of a controller in a refrigerator provided by an embodiment of the present invention. After the controller completes step S14, step S15 specifically includes steps S151 to S157. When the overall noise evaluation result is unqualified, all fans are first controlled to stop, and only the compressor is kept running to determine the perceived noise evaluation of the compressor unit. The compressor-based unit noise evaluation window is also displayed on the display. When the compressor-based unit noise evaluation result is unqualified, since the compressor and fans are used together in actual operation of the refrigerator, such as during the refrigeration stage, the compressor, refrigeration fan, and freezing fan all operate together, when the compressor-based unit noise evaluation result is unqualified, it means that the noise from the compressor alone is already very high. Therefore, there is no need to further evaluate the noise of the fans, and the compressor noise is directly identified as unqualified. If the noise level evaluation result based on the compressor is qualified, the noise of the fan is further added. At this time, the refrigeration fan, the freezer fan, and the bottom-cooling fan are started sequentially, and the noise level evaluation window based on a single fan is displayed on the monitor to receive the noise level evaluation result based on a single fan input by the user. The noise level evaluation result based on a single fan includes: the noise level evaluation result based on the refrigeration fan, the noise level evaluation result based on the freezer fan, and the noise level evaluation result based on the bottom-cooling fan. For example, if the noise level evaluation result based on the refrigeration fan is "unqualified", it means that when the compressor is running, the noise from the refrigeration fan is unacceptable to the human ear. In this case, the parameters of the refrigeration fan need to be readjusted, or its malfunction needs to be checked.

[0068] Specifically, the controller is further configured to: control the compressor and all fans to shut down, and control the application module to start, displaying a unit noise evaluation window based on the application module on the display to receive the unit noise evaluation result based on the application module input by the user; control the application module to shut down, and control the compressor and all fans to start, and when the overall noise evaluation result is determined to be qualified, start the application module and display a unit noise evaluation window based on the application module on the display to receive the unit noise evaluation result based on the application module input by the user.

[0069] For example, see Figure 7 , Figure 7This is a third workflow diagram of a refrigerator controller provided in an embodiment of the present invention. After executing step S12, the controller is also used to execute steps S21 to S26. In this embodiment, since the application module can be used without the compressor and fan, it is necessary to measure its noise under the premise that the compressor and fan are both stopped. At this time, after evaluating the overall noise of the refrigerator, the compressor and all fans are stopped. Only the application module is running, and the individual noise evaluation window based on the application module is displayed on the display to receive the individual noise evaluation result based on the application module input by the user. In addition, there are also situations where the application module needs to be used with the compressor and fan. In this case, after evaluating the overall noise of the refrigerator, and if the overall noise evaluation result is qualified, the application module is started, and the individual noise evaluation window based on the application module is displayed on the display to receive the individual noise evaluation result based on the application module input by the user. At this time, the superimposed noise of the application module during the overall operation of the refrigerator is evaluated.

[0070] Specifically, displaying a unit noise level evaluation window based on an application module on the display to receive unit noise level evaluation results input by the user includes: if there is only one application module, controlling the application module to start and displaying the unit noise level evaluation window of the current application module on the display to receive unit noise level evaluation results input by the user based on the current application module; if there are at least two application modules, sequentially controlling at least two application modules to operate only one at a time, and displaying unit noise level evaluation windows based on a single application module on the display respectively to receive unit noise level evaluation results input by the user based on a single application module.

[0071] For example, see Figure 8 , Figure 8This is a fourth workflow diagram of a controller in a refrigerator provided by an embodiment of the present invention. When superimposed application modules perform noise evaluation, it is necessary to determine how many application modules exist in the refrigerator. If there is only one application module, the application module is controlled to start, and then the unit noise evaluation window of the current application module is displayed on the display to receive the unit noise evaluation result based on the current application module input by the user. For example, if the application module is a vacuum module, then the vacuum module (vacuum pump) is controlled to start, and then the unit noise evaluation window based on the vacuum module is displayed on the display to receive the unit noise evaluation result based on the vacuum module input by the user, thus evaluating the noise of the vacuum module operation. If there are at least two application modules in the refrigerator, these application modules are controlled to start in turn, and the unit noise evaluation window based on a single application module is displayed on the display respectively to receive the unit noise evaluation result based on a single application module input by the user. For example, if the application modules in the refrigerator include an ice-making module and a dehumidification module, the ice-making module can be controlled to operate first. At this time, a unit noise evaluation window based on the ice-making module is displayed on the screen to receive the unit noise evaluation results based on the ice-making module input by the user, and to evaluate the noise of the ice-making module operation. After evaluating the noise of the ice-making module, the ice-making module is turned off, and then the dehumidification module is started. At this time, a unit noise evaluation window based on the dehumidification module is displayed on the screen to receive the unit noise evaluation results based on the dehumidification module input by the user, and to evaluate the noise of the dehumidification module operation.

[0072] In this embodiment of the invention, when the compressor, fan and other machines are stopped, an evaluation is performed on a single module to determine the perceived noise value of the module. Since there are uncertain factors such as noise superposition during the operation of the whole machine, the module's individual noise value is determined first, then the module's operating noise value is determined during the operation of the whole machine, and finally, the application module is deemed qualified under the condition of maximum noise of the whole machine, that is, under high load.

[0073] Specifically, the controller is also configured to: when the current time is detected to be a preset nighttime period, add weighted noise to the noise currently emitted by the refrigerator.

[0074] For example, see Figure 9 , Figure 9 This is the fifth working flowchart of a refrigerator controller provided in an embodiment of the present invention. Since the human ear is more sensitive to noise at night, the night mode will add a weighted value to the basic noise value to simulate the effect of enhanced noise at night. After entering the night mode, the noise evaluation of the previous operating conditions will be performed again to simulate the user's nighttime usage scenario.

[0075] See Figure 10 , Figure 10This is a schematic diagram illustrating information interaction between a refrigerator 100 and a client according to an embodiment of the present invention. The refrigerator 100 establishes a data connection with the client 200 through a router 300 or a cloud server 400. After the developers evaluate the noise level of the refrigerator, the client (backend computer) can collect and integrate the overall noise level evaluation results and the individual noise level evaluation results, and then analyze the refrigerator noise level, as well as locate refrigerators with high noise levels and corresponding devices, facilitating subsequent replacement of control modes or devices.

[0076] Compared to existing technologies, the refrigerator disclosed in this invention performs noise evaluations separately for the overall refrigerator operation, compressor operation alone, and compressor and single fan operation during stable or high-load operation phases. The evaluation results, which allow for manual input of acceptable or unacceptable noise levels, are more consistent with human noise perception. By identifying the perceived noise level of the product under various operating conditions during the product design phase, and then evaluating the product's operation based on the identified perceived noise levels, the location of noise problems is determined if the product fails to meet standards, thus helping developers design better new products.

[0077] See Figure 11 , Figure 11 This is a flowchart of a noise evaluation method for a refrigerator provided in an embodiment of the present invention. The refrigerator is equipped with a refrigeration fan for conveying cold air generated in the refrigeration cycle to the refrigerator compartment, a refrigeration fan for conveying cold air generated in the refrigeration cycle to the freezer compartment, and a bottom cooling fan for cooling the condenser and compressor compartments in the refrigerator; the method includes:

[0078] S1. After detecting that the refrigerator has entered a stable operation stage or a high-load operation stage, the overall noise evaluation window of the refrigerator is displayed on the refrigerator's display to receive the overall noise evaluation result input by the user.

[0079] S2. When the overall noise evaluation result is found to be unqualified, the individual noise evaluation window of the refrigerator is displayed on the refrigerator's display to receive the individual noise evaluation result input by the user; wherein, during the overall noise evaluation process, the compressor and all fans are in the running stage; during the individual noise evaluation process, only the compressor is running, or only the compressor and one of the fans are running.

[0080] S3. Integrate the overall noise evaluation results and the individual noise evaluation results.

[0081] Specifically, when the overall noise level evaluation result is detected as unqualified, the individual noise level evaluation window of the current refrigerator is displayed on the refrigerator's monitor to receive the individual noise level evaluation result input by the user. This includes: controlling all fans to stop and displaying a compressor-based individual noise level evaluation window on the monitor to receive the compressor-based individual noise level evaluation result input by the user; when the compressor-based individual noise level evaluation result is detected as qualified, the compressor is kept running, and the refrigeration fan, the freezing fan, and the bottom cooling fan are sequentially controlled to operate only one at a time, and individual noise level evaluation windows based on a single fan are displayed on the monitor to receive the individual noise level evaluation result based on a single fan input by the user.

[0082] Specifically, the refrigerator also includes:

[0083] An application module includes at least one of a vacuum module, an ice-making module, and a humidification module; wherein the vacuum module is used to perform a vacuuming operation on the vacuum drawer in the refrigerator, the ice-making module is used to make ice cubes, and the humidification module is used to perform a humidification operation on the storage compartment.

[0084] The method further includes: controlling the compressor and all fans to stop completely, and controlling the application module to start, displaying a unit noise evaluation window based on the application module on the display to receive the unit noise evaluation result based on the application module input by the user; controlling the application module to stop completely, and controlling the compressor and all fans to start completely, and when the overall noise evaluation result is determined to be qualified, starting the application module, displaying a unit noise evaluation window based on the application module on the display to receive the unit noise evaluation result based on the application module input by the user.

[0085] Specifically, displaying a unit noise level evaluation window based on an application module on the display to receive unit noise level evaluation results input by the user includes: if there is only one application module, controlling the application module to start and displaying the unit noise level evaluation window of the current application module on the display to receive unit noise level evaluation results input by the user based on the current application module; if there are at least two application modules, sequentially controlling at least two application modules to operate only one at a time, and displaying unit noise level evaluation windows based on a single application module on the display respectively to receive unit noise level evaluation results input by the user based on a single application module.

[0086] Specifically, the method further includes: when the current time is detected to be a preset nighttime period, adding weighted noise to the noise currently emitted by the refrigerator.

[0087] Specifically, the method further includes: acquiring the real-time ambient temperature, and controlling the rotation speed of the compressor, the refrigeration fan, and the freezing fan based on the real-time ambient temperature.

[0088] It is worth noting that the specific working process of the refrigerator noise evaluation method described in the embodiments of the present invention can be referred to the working process of the controller in the refrigerator described in the above embodiments, and will not be repeated here.

[0089] Compared to existing technologies, the noise evaluation method for refrigerators disclosed in this invention performs noise evaluations separately for the overall operation of the refrigerator, the operation of the compressor alone, and the operation of the compressor and a single fan during the stable or high-load operation phases of the refrigerator. The method allows for manual input of noise evaluation results indicating whether the noise is acceptable or unacceptable, making it more consistent with human hearing's perception of noise. By identifying the perceived noise level of the product under various operating conditions during the product design phase, and then evaluating the product's operation based on the identified perceived noise levels, the method determines the location of noise problems if they are unacceptable, thus helping developers better design new products.

[0090] 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 refrigerator comprises: a cabinet in which a storage compartment is formed, the storage compartment comprising at least a refrigeration compartment and a freezing compartment; a cabinet door provided at an opening of the storage compartment for opening and closing the storage compartment; a compressor provided in the cabinet for compressing refrigerant flowing in a refrigeration cycle of the refrigerator to provide power for the refrigeration cycle; a fan provided in the cabinet, comprising a refrigeration fan for delivering cold air generated in the refrigeration cycle to the refrigeration compartment, a freezing fan for delivering cold air generated in the refrigeration cycle to the freezing compartment, and a bottom cooling fan for cooling a condenser and a compressor chamber in the refrigerator; an application module comprising at least one of a vacuum module for performing a vacuumizing operation on a vacuum drawer in the refrigerator, an ice making module for making ice cubes, and a humidifying module for performing a humidifying operation on the storage compartment; a controller configured to: after detecting that the refrigerator enters a stable running stage or a high load running stage, display an overall noise degree evaluation window of the current refrigerator in a display of the refrigerator to receive an overall noise degree evaluation result input by a user; after detecting that the overall noise degree evaluation result is unqualified, display a single noise degree evaluation window of the current refrigerator in the display of the refrigerator to receive a single noise degree evaluation result input by the user; wherein, during the overall noise degree evaluation process, the compressor and the fan are both in a running stage; during the single noise degree evaluation process, only the compressor is running, or only the compressor and one of the fans is running; integrate the overall noise degree evaluation result and the single noise degree evaluation result; wherein, the controller controls the compressor and all the fans to be completely stopped, and controls the application module to be started, displays an application module-based single noise degree evaluation window in the display to receive an application module-based single noise degree evaluation result input by the user; controls the application module to be stopped, and controls the compressor and all the fans to be completely started, and when it is determined that the overall noise degree evaluation result is qualified, starts the application module, and displays the application module-based single noise degree evaluation window in the display to receive the application module-based single noise degree evaluation result input by the user.

2. The refrigerator according to claim 1, wherein when it is detected that the overall noise degree evaluation result is unqualified, the controller is further configured to: control all the fans to be stopped, and display a compressor-based single noise degree evaluation window in the display to receive a compressor-based single noise degree evaluation result input by the user; when it is detected that the compressor-based single noise degree evaluation result is qualified, keep the compressor in a running state, and control the refrigeration fan, the freezing fan and the bottom cooling fan to run one by one, and display a single fan-based single noise degree evaluation window in the display to receive a single fan-based single noise degree evaluation result input by the user.

3. The refrigerator according to claim 1, wherein the display of the application module-based single noise degree evaluation window in the display to receive the application module-based single noise degree evaluation result input by the user comprises: If there is only one application module, the application module is controlled to start, and a single-noise evaluation window of the current application module is displayed on the display to receive a single-noise evaluation result input by a user based on the current application module; If there are at least two application modules, the at least two application modules are controlled to run one by one, and a single-noise evaluation window based on a single application module is displayed on the display to receive a single-noise evaluation result input by a user based on the single application module.

4. The refrigerator according to claim 1, wherein The controller is further configured to: When it is detected that the current time is a preset night time period, the weighted noise is additionally superimposed on the noise currently generated by the refrigerator.

5. The refrigerator according to claim 1, wherein The refrigerator further comprises: An ambient temperature sensor arranged outside the cabinet and configured to detect an ambient temperature of an environment in which the refrigerator is located; The controller is further configured to: Obtain a real-time ambient temperature, and control the rotation speeds of the compressor and the fans according to the real-time ambient temperature.

6. A noise evaluation method of a refrigerator, characterized by, The refrigerator is provided with a refrigeration fan for delivering cold air generated in a refrigeration cycle to a refrigeration chamber, a freezing fan for delivering cold air generated in the refrigeration cycle to a freezing chamber, and a bottom cooling fan for cooling a condenser and a compressor cabin in the refrigerator; the method comprises: After it is detected that the refrigerator enters a stable operation stage or a high-load operation stage, a whole-noise evaluation window of the current refrigerator is displayed on a display of the refrigerator to receive a whole-noise evaluation result input by a user; After it is detected that the whole-noise evaluation result is unqualified, a single-noise evaluation window of the current refrigerator is displayed on the display of the refrigerator to receive a single-noise evaluation result input by a user; in the whole-noise evaluation process, the compressor and all the fans are in an operation stage; in the single-noise evaluation process, only the compressor is running or only the compressor and one of the fans are running; The whole-noise evaluation result and the single-noise evaluation result are integrated; The display of the single-noise evaluation window of the current refrigerator on the display of the refrigerator to receive the single-noise evaluation result input by the user comprises: controlling the compressor and all the fans to stop running, controlling an application module to start, and displaying a single-noise evaluation window of the application module on the display to receive a single-noise evaluation result of the application module input by a user; controlling the application module to stop, controlling the compressor and all the fans to start running, and when it is determined that the whole-noise evaluation result is qualified, starting the application module, displaying the single-noise evaluation window of the application module on the display to receive the single-noise evaluation result of the application module input by the user.

7. The refrigerator noise evaluation method according to claim 6, characterized by, The display of the single-noise evaluation window of the current refrigerator on the display of the refrigerator to receive the single-noise evaluation result input by the user when it is detected that the whole-noise evaluation result is unqualified comprises: controlling all the fans to stop running, and displaying a single-noise evaluation window of the compressor on the display to receive a single-noise evaluation result of the compressor input by a user; When the compressor-based single-noise evaluation result is detected to be qualified, the compressor is kept in operation, and the refrigeration fan, the freezing fan and the bottom cold fan are sequentially controlled to operate only one, and a single-fan-based single-noise evaluation window is displayed in the display to receive a single-fan-based single-noise evaluation result input by a user.

8. The refrigerator noise evaluation method according to claim 6, characterized by, The method further comprises: When it is detected that the current time is a preset night time period, a weighted noise is additionally superimposed on the noise currently emitted by the refrigerator.

9. The refrigerator noise evaluation method according to claim 6, characterized by, The method further comprises: The real-time ambient temperature is acquired, and the rotation speeds of the compressor, the refrigeration fan and the freezing fan are controlled according to the real-time ambient temperature.

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