Method and apparatus for reducing dust accumulation on a refrigerator condenser

Abstract

The application provides a method and device for reducing dust accumulation of a refrigerator condenser, and the method comprises the following steps: acquiring an ambient temperature outside the refrigerator; the ambient temperature comprises a first temperature interval, a second temperature interval, a third temperature interval, a fourth temperature interval and a fifth temperature interval, the interval temperatures of the first temperature interval, the second temperature interval, the third temperature interval, the fourth temperature interval and the fifth temperature interval are adjacent and increase from small to large. According to different ambient temperature intervals, the running direction and running time of the condensing fan are set. By changing the running direction of the condensing fan, the airflow direction flowing through the bottom condenser is changed, and then the dust on the windward surface of the bottom condenser is removed through the action force of the airflow, the dust accumulation process on the bottom condenser is reduced, and the purpose of reducing the dust accumulation of the bottom condenser is achieved, so as to solve the problem that the bottom condenser of the refrigerator is prone to dust accumulation.

Description

Technical Field

[0001] This application relates to the field of refrigerator dust removal technology, specifically to a method and apparatus for reducing dust accumulation on refrigerator condensers. Background Technology

[0002] The bottom-mounted condenser in a refrigerator uses a finned structure and is located inside the compressor compartment. After a period of operation, the inevitable deposition of fine fibers and particulate matter from the environment leads to dust accumulation. Due to cost and installation space limitations, bottom-mounted condensers are relatively small, requiring a condenser fan to force air circulation to achieve the necessary heat exchange effect. During air circulation, the condenser fan always blows air towards the condenser, further increasing the deposition of suspended particles and fibers on the condenser. Dust accumulation on the condenser causes a decline in the performance of the condenser unit and the refrigeration system. While the refrigerator compartments can still cool, energy consumption and freezing capacity will significantly deteriorate. Studies have shown that dust accumulation increases overall energy consumption by about 3-4%, and the minimum temperature that the freezer compartment can maintain increases by 1-2°C. Since refrigerators have a long service life of approximately 7-10 years, dust will accumulate over time, eventually causing the refrigerator to stop cooling altogether. Summary of the Invention

[0003] This application provides a method and apparatus for reducing dust accumulation on refrigerator condensers, in order to solve the problem of dust accumulation on bottom-mounted refrigerator condensers.

[0004] This application provides a method for reducing dust accumulation on a refrigerator condenser, including:

[0005] The ambient temperature outside the refrigerator is obtained; the ambient temperature includes a first temperature range, a second temperature range, a third temperature range, a fourth temperature range, and a fifth temperature range, wherein the temperatures of the first temperature range, the second temperature range, the third temperature range, the fourth temperature range, and the fifth temperature range are adjacent and increase from small to large;

[0006] If the ambient temperature is within the first temperature range, a first cycle operation command is sent to the condenser fan; the condenser fan operates in both forward and reverse directions, and when the condenser fan operates in the forward direction, the airflow is directed towards the bottom-mounted condenser; the first cycle operation command is, after controlling the condenser fan to run in the reverse direction at a first speed for a first duration at a first time interval, a forward operation command is sent to the condenser fan.

[0007] If the ambient temperature is within the second temperature range, obtain the compressor's operating status;

[0008] When the compressor starts running, a second cycle operation command is sent to the condenser fan; the second cycle operation command is to control the condenser fan to run in reverse at the first speed for the first time duration at second time intervals within a second duration, and then send a forward operation command to the condenser fan.

[0009] If the ambient temperature is within the third temperature range, obtain the operating status of the compressor;

[0010] When the compressor starts running, a reverse operation command is sent to the condenser fan to control the condenser fan to run in reverse at the first speed for a third duration; the third duration is longer than the first duration.

[0011] If the ambient temperature is within the fourth temperature range, the operating speed of the compressor at the start of operation is obtained; the operating speed includes the first speed range.

[0012] When the operating speed is within the first speed range, a reverse operation command is sent to the condenser fan to control the condenser fan to run in reverse at the first speed for a third duration;

[0013] If the ambient temperature is within the fifth temperature range, a first operating command is sent to the condenser fan to control the condenser fan to operate according to the first preset rule;

[0014] Until the refrigerator enters defrost mode, a reverse operation command is sent to the condenser fan to control the condenser fan to run in reverse at the first speed for a third duration.

[0015] Optionally, the condenser fan is a variable frequency axial flow fan.

[0016] Optionally, the first rotational speed is the maximum rotational speed of the condenser fan.

[0017] Optionally, after the step of sending a second cycle operation command to the condenser fan when the compressor starts running, the method further includes:

[0018] Obtain the continuous operating time of the compressor;

[0019] When the continuous running time is greater than the second duration, a forward operation command is sent to the condenser fan to control the condenser fan to continue to run in the forward direction.

[0020] Optionally, if the operating speed is not within the first speed range, a second operating command is sent to the condenser fan to control the condenser fan to operate according to a second preset rule.

[0021] Optionally, the operating speed further includes a second speed range, a third speed range, a fourth speed range, and a fifth speed range, wherein the speed values ​​of the first speed range, the second speed range, the third speed range, the fourth speed range, and the fifth speed range increase sequentially; the operating speed of the condenser fan includes the first speed, the second speed, the third speed, and the fourth speed, wherein the speed values ​​of the second speed, the third speed, and the fourth speed increase sequentially; the second preset rule includes:

[0022] When the operating speed is within the second speed range, the condenser fan is controlled to run in the positive direction at the second speed.

[0023] When the operating speed is within the third speed range, the condenser fan is controlled to run in the positive direction at the third speed.

[0024] When the operating speed is within the fourth speed range, the condenser fan is controlled to run in the positive direction at the fourth speed.

[0025] When the operating speed is within the fifth speed range, the condenser fan is controlled to run in the forward direction at the first speed.

[0026] Optionally, the first preset rule includes:

[0027] When the operating speed is within the first speed range, the condenser fan is controlled to run forward at a speed greater than the third speed and less than the fourth speed.

[0028] When the operating speed is within the second speed range and the third speed range, the condenser fan is controlled to run in the positive direction at the fourth speed.

[0029] When the operating speed is within the fourth speed range, the condenser fan is controlled to run forward at a speed greater than the fourth speed.

[0030] When the operating speed is within the fifth speed range, the condenser fan is controlled to run in the forward direction at the first speed.

[0031] The second aspect of this application provides an apparatus for reducing dust accumulation on a refrigerator condenser, applied to the aforementioned method for reducing dust accumulation on a refrigerator condenser. The apparatus includes: a condenser fan, a compressor, a data acquisition module, and a control module. The condenser fan is disposed between the compressor and the bottom-mounted condenser, and the data acquisition module is disposed outside the refrigerator. The condenser fan, compressor, and data acquisition module are electrically connected to the control module.

[0032] The acquisition module is used to: acquire the ambient temperature outside the refrigerator; the ambient temperature includes a first temperature range, a second temperature range, a third temperature range, a fourth temperature range and a fifth temperature range, the temperatures of the first temperature range, the second temperature range, the third temperature range, the fourth temperature range and the fifth temperature range are adjacent and increase from small to large;

[0033] The control module is used to: send a first cycle operation command to the condenser fan when the ambient temperature is within the first temperature range; the condenser fan's operating direction includes forward and reverse, and when the condenser fan is running forward, the airflow is directed towards the bottom-mounted condenser; the first cycle operation command is to send a forward operation command to the condenser fan after controlling the condenser fan to run in reverse at a first speed for a first duration at a first time interval;

[0034] The operating status of the compressor is obtained when the ambient temperature is within the second temperature range;

[0035] When the compressor starts running, a second cycle operation command is sent to the condenser fan; the second cycle operation command is to control the condenser fan to run in reverse at the first speed for the first time duration at second time intervals within a second duration, and then send a forward operation command to the condenser fan.

[0036] The operating status of the compressor is obtained within the third temperature range of the ambient temperature.

[0037] When the compressor starts running, a reverse operation command is sent to the condenser fan to control the condenser fan to run in reverse at the first speed for a third duration; the third duration is longer than the first duration.

[0038] The operating speed of the compressor is obtained when the ambient temperature is within the fourth temperature range; the operating speed includes a first speed range.

[0039] When the operating speed is within the first speed range, a reverse operation command is sent to the condenser fan to control the condenser fan to run in reverse at the first speed for a third duration;

[0040] When the ambient temperature is within the fifth temperature range, a first operating command is sent to the condenser fan to control the condenser fan to operate according to a first preset rule;

[0041] Until the refrigerator enters defrost mode, a reverse operation command is sent to the condenser fan to control the condenser fan to run in reverse at the first speed for a third duration.

[0042] Optionally, the control module is further configured to:

[0043] Obtain the continuous operating time of the compressor;

[0044] When the continuous running time is greater than the second duration, a forward operation command is sent to the condenser fan to control the condenser fan to continue to run in the forward direction.

[0045] As can be seen from the above technical solutions, this application provides a method and apparatus for reducing dust accumulation on a refrigerator condenser. The method includes: acquiring the ambient temperature outside the refrigerator; the ambient temperature includes a first temperature range, a second temperature range, a third temperature range, a fourth temperature range, and a fifth temperature range, wherein the temperatures of the first, second, third, fourth, and fifth temperature ranges are adjacent and increase from small to large. Different operating directions and operating times of the condenser fan are set according to different ambient temperature ranges. By changing the operating direction of the condenser fan, the airflow direction through the bottom-mounted condenser is changed, and thus, through the force of the airflow, dust on the windward side of the bottom-mounted condenser is removed, reducing the accumulation process of dust on the bottom-mounted condenser and achieving the purpose of reducing dust accumulation on the bottom-mounted condenser, thereby solving the problem of easy dust accumulation on the bottom-mounted condenser of the refrigerator. Attached Figure Description

[0046] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 This is a flowchart illustrating a method for reducing dust accumulation on a refrigerator condenser, as provided in an embodiment of this application.

[0048] Figure 2 Schematic diagram of forced heat exchange and air circulation principle for bottom-mounted condensers in some refrigerator products;

[0049] Figure 3 A schematic diagram of the air circulation principle of the condenser fan provided in the embodiments of this application;

[0050] Figure 4 This is a schematic diagram of the device structure provided in the embodiments of this application. Detailed Implementation

[0051] The embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described below do not represent all embodiments consistent with this application. They are merely examples of systems and methods consistent with some aspects of this application as detailed in the claims.

[0052] During air circulation, the condenser fan always blows air towards the condenser, which increases the deposition of suspended particles and fibers on the condenser. Dust buildup on the condenser leads to a decline in the performance of the condenser unit and the refrigeration system. While the refrigerator compartments may still cool, energy consumption and freezing capacity will significantly decrease.

[0053] To address the problem of dust accumulation on the bottom-mounted condenser of refrigerators, some embodiments of this application provide a method for reducing dust accumulation on the refrigerator condenser. To more clearly describe the method of this application, the condenser fan will first be explained. It is understood that, in order to simultaneously dissipate heat from the compressor and the condenser, the condenser fan is positioned between the compressor and the bottom-mounted condenser, and the condenser fan, compressor, and bottom-mounted condenser are all located within the compressor compartment. In the embodiments of this application, the condenser fan is a variable frequency axial flow fan, which is a type of fan that can change its speed and airflow direction. Using a variable frequency axial flow fan as the condenser fan allows it to operate in both forward and reverse directions simultaneously.

[0054] See Figure 2-3 , Figure 2 This diagram illustrates the forced heat exchange and air circulation principle of bottom-mounted condensers in some refrigerator products. Figure 3 This is a schematic diagram illustrating the air circulation principle of the condenser fan provided in this application embodiment. Under variable frequency drive, the condenser fan changes its operating direction. In refrigerator products, the condenser fan is set to run towards the bottom-mounted condenser, with this direction being the forward operating direction. When the condenser fan's operating direction is reversed, changing the airflow direction across the bottom-mounted condenser, the force of the airflow removes dust from the windward side of the bottom-mounted condenser, thus reducing dust accumulation. To achieve both reduced dust accumulation on the bottom-mounted condenser and without affecting the overall performance, the condenser fan's speed and reverse operation time are set according to the ambient temperature and compressor speed.

[0055] See Figure 1 , Figure 1 A flowchart illustrating a method for reducing dust accumulation on a refrigerator condenser, provided in this application embodiment, includes:

[0056] S100: Obtain the ambient temperature outside the refrigerator.

[0057] Since the ambient temperature outside the refrigerator directly affects the temperature of the freezer and refrigerator compartments, and thus the frequency of the refrigerator's refrigeration cycle, which in turn affects the working state of the compressor and condenser, this embodiment controls the operating direction and duration of the condenser fan based on the ambient temperature. According to the refrigerator's operating environment, the ambient temperature can be divided into five ranges: a first temperature range, a second temperature range, a third temperature range, a fourth temperature range, and a fifth temperature range. The temperatures in these five ranges are adjacent and increase from lowest to highest.

[0058] Since the temperature in the refrigerator's cooling compartment is typically around 5°C, the frequency of the refrigerator's cooling cycle decreases significantly at temperatures of 5°C and below. Therefore, in some embodiments, the temperature range ≤5°C can be designated as the first temperature range, the temperature range of 5°C-10°C as the second temperature range, the temperature range of 10°C-25°C as the third temperature range, the temperature range of 25°C-35°C as the fourth temperature range, and the temperature range ≥35°C as the fifth temperature range. It is understandable that the higher the ambient temperature, the higher the frequency of the refrigerator's cooling cycle, meaning the higher the operating frequency of the compressor, condenser, and condenser fan.

[0059] S210: If the ambient temperature is within the first temperature range, send the first cycle operation command to the condenser fan.

[0060] When the ambient temperature is ≤5℃, the compressor operates at a low frequency and speed. Therefore, within the first temperature range, compressor operation can be disregarded. The first cycle operation command is to control the condenser fan to run in reverse at a first speed for a first duration within a first time interval, and then send a forward operation command to the condenser fan. The first speed can be set to the maximum speed of the condenser fan. To ensure that the condenser fan running in reverse at its maximum speed does not affect the overall performance of the refrigerator, the first duration of the condenser fan's reverse operation should not be too long. Since the compressor's operating frequency is low within the first temperature range, the condenser fan's operating frequency is also low, resulting in relatively less dust accumulation on the bottom-mounted condenser. Therefore, the first time interval can be relatively long; in some embodiments, the first time interval can be 240 hours, and the first duration can be 1 minute. For example, every 240 hours, the condenser fan is controlled to run in reverse at its maximum speed for 1 minute, and then run in the forward direction. This cyclical operation can remove the dust accumulated on the windward side of the bottom-mounted condenser during forward operation through reverse airflow, reducing the accumulation of dust on the bottom-mounted condenser.

[0061] S221: If the ambient temperature is within the second temperature range, obtain the compressor's operating status.

[0062] S222: When the compressor starts running, a second cycle operation command is sent to the condenser fan.

[0063] The ambient temperature in the second temperature range is higher than that in the first temperature range. Within the second temperature range, specifically between 5℃ and 10℃, the operating frequency of the compressor and condenser fan begins to increase. Therefore, the impact of the compressor's operating time on dust accumulation on the bottom-mounted condenser needs to be considered. Since the reverse operation of the condenser fan has the least impact on the overall performance of the refrigerator when the compressor first starts running, a second cycle operation command is sent to the condenser fan at the start of compressor operation. The second cycle operation command involves controlling the condenser fan to run in reverse at a first speed for a first duration at second time intervals, after which a forward operation command is sent to the condenser fan.

[0064] Since the continuous operation time of the compressor for one cooling cycle is 30-60 minutes, in some embodiments, the second duration can be 60 minutes. To increase the reverse operation time, the second time interval should be shorter than the first time interval, which can be 10 minutes. For example, within the first 60 minutes of compressor operation, a reverse operation command is sent to the condenser fan every 10 minutes, controlling the condenser fan to run at maximum speed for 1 minute. This cyclical operation reduces the accumulation of dust on the bottom-mounted condenser.

[0065] The speed of the refrigeration cycle, i.e., the continuous running time of the compressor, is also affected by the volume of food in the compartment. When there is a lot of food, the continuous running time of the compressor may exceed 60 minutes, which is longer than the second cycle duration. Therefore, after sending the second cycle operation command to the condenser fan when the compressor starts running, the following steps are also included:

[0066] S223: Obtain the continuous running time of the compressor.

[0067] S224: When the continuous running time is greater than the second duration, send a forward operation command to the condenser fan to control the condenser fan to continue to run in the forward direction.

[0068] That is, after the compressor has been running continuously for more than 60 minutes, the condenser fan will no longer run in reverse and will continue to run in forward direction. It should be noted that when the condenser fan is running in forward direction, its operating speed is related to the compressor's operating speed; that is, when the compressor's speed increases, the condenser fan's speed also increases.

[0069] S231: If the ambient temperature is within the third temperature range, obtain the compressor's operating status.

[0070] S232: When the compressor starts running, a reverse operation command is sent to the condenser fan to control the condenser fan to run in reverse at the first speed for a third duration.

[0071] The temperature in the third temperature range is higher than that in the second temperature range. Specifically, within the 10℃-25℃ temperature environment, the operating frequency of the compressor and condenser fan increases compared to the second temperature range, leading to increased dust accumulation on the bottom-mounted condenser. Therefore, to increase the reverse operation time of the condenser fan, the third duration should be greater than the first duration, and the third duration should be at least equal to the total reverse operation time of the condenser fan within the second temperature range. Thus, in some embodiments, the third duration can be 5 minutes. For example, each time the compressor starts running, the condenser fan is controlled to run in reverse at its highest speed for 5 minutes, and then runs in the forward direction. Because the ambient temperature increases, the compressor speed increases, and the condenser fan is not suitable for reverse operation when the compressor speed is high. Therefore, the condenser fan only runs in reverse for the first 5 minutes after the compressor starts running. By periodically changing the airflow direction of the condenser fan, the airflow direction through the bottom-mounted condenser can be changed, reducing the dust accumulation process on the bottom-mounted condenser.

[0072] S241: If the ambient temperature is within the fourth temperature range, obtain the operating speed of the compressor when it starts running.

[0073] The compressor's operating speed includes a first speed range, a second speed range, a third speed range, a fourth speed range, and a fifth speed range, with the speed values ​​increasing sequentially from the first speed range to the fifth speed range. In some embodiments, based on the speed characteristics of the compressor during the refrigeration cycle, in some implementations, the first speed range may be 1200–1500 RPM, the second speed range may be 1500–2400 RPM, the third speed range may be 2400–3600 RPM, the fourth speed range may be 3600–4200 RPM, and the fifth speed range may be 4200–4500 RPM.

[0074] S242: When the operating speed is within the first speed range, a reverse operation command is sent to the condenser fan to control the condenser fan to run in reverse at the first speed for a third duration.

[0075] When the compressor operates at 1200-1500 RPM, a reverse operation command is sent to the condenser fan at the start of its operation, controlling the condenser fan to run in reverse for 5 minutes. Since the operating frequency of the compressor and condenser fan increases in the fourth temperature range compared to the third temperature range, the condenser fan runs in reverse for 5 minutes each time the compressor starts, effectively increasing the reverse operation time. By periodically changing the airflow direction of the condenser fan, the airflow direction through the bottom-mounted condenser can be altered, effectively reducing dust accumulation on the bottom-mounted condenser.

[0076] If the compressor's operating speed is not within the first speed range, a second operating command is sent to the condenser fan to control the condenser fan to operate according to a second preset rule. The condenser fan's operating speed includes a first speed, a second speed, a third speed, and a fourth speed, wherein the speed values ​​of the second speed, the third speed, and the fourth speed increase sequentially. The second preset rule includes:

[0077] When the operating speed is within the second speed range, the condenser fan is controlled to run in the positive direction at the second speed.

[0078] When the operating speed is within the third speed range, the condenser fan is controlled to run in the positive direction at the third speed.

[0079] When the operating speed is within the fourth speed range, the condenser fan is controlled to run in the positive direction at the fourth speed.

[0080] When the operating speed is within the fifth speed range, the condenser fan is controlled to run in the positive direction at the first speed.

[0081] Referring to the compressor's operating speed of 1200–4500 RPM, in some embodiments, the condenser fan's operating speed can be 600–1200 RPM. The first speed is the condenser fan's maximum speed, i.e., 1200 RPM. The second speed can be 750 RPM, the third speed can be 910 RPM, and the fourth speed can be 1050 RPM. For example, when the compressor's operating speed is 1500–2400 RPM, the condenser fan operates at 750 RPM; when the compressor's operating speed is 2400–3600 RPM, the condenser fan operates at 910 RPM; when the compressor's operating speed is 3600–4200 RPM, the condenser fan operates at 1050 RPM; and when the compressor's operating speed is 4200–4500 RPM, the condenser fan operates at 1200 RPM.

[0082] S251: If the ambient temperature is within the fifth temperature range, send a first operating command to the condenser fan to control the condenser fan to operate according to the first preset rule.

[0083] When the ambient temperature exceeds 35℃, it is considered hot weather, and the operating frequency of the compressor and condenser increases significantly, leading to a rise in temperature inside the compressor compartment. At this time, the condenser fan speed should also increase to quickly cool the compressor compartment. The primary function of the condenser fan at this time is cooling; therefore, within this temperature range, the condenser fan operates according to a first preset rule, which includes:

[0084] When the operating speed is within the first speed range, the condenser fan is controlled to run forward at a speed greater than the third speed and less than the fourth speed.

[0085] When the operating speed is within the second and third speed ranges, the condenser fan is controlled to run in the positive direction at the fourth speed.

[0086] When the operating speed is within the fourth speed range, control the condenser fan to run forward at a speed greater than the fourth speed.

[0087] When the operating speed is within the fifth speed range, the condenser fan is controlled to run in the positive direction at the first speed.

[0088] For example, when the compressor operates at 1200–1500 RPM, the condenser fan operates forward at a speed between 910 and 1050 RPM; when the compressor operates at 1500–3600 RPM, the condenser fan operates forward at 1050 RPM; when the compressor operates at 3600–4200 RPM, the condenser fan operates forward at a speed greater than 1050 RPM; and when the compressor operates at 4200–4500 RPM, the condenser fan operates forward at 1200 RPM.

[0089] When the temperature rises, increasing the speed of the condenser fan can not only lower the temperature inside the compressor compartment, but also reduce the probability of dust adhering to the bottom condenser due to the temperature drop, thus slowing down the dust accumulation process on the bottom condenser.

[0090] S252: Until the refrigerator enters defrost mode, a reverse operation command is sent to the condenser fan to control the condenser fan to run in reverse at the first speed for a third duration.

[0091] When the refrigerator enters defrost mode, the compressor continues to run to maintain a stable temperature in both the refrigerator and freezer compartments. At this time, a reverse operation command is sent to the condenser fan, controlling it to run in reverse at the first speed for a third duration, i.e., 5 minutes at 1200 RPM. After that, the condenser fan resumes forward operation.

[0092] By controlling the condenser fan differently under varying ambient temperatures, the dust accumulation on the bottom-mounted condenser can be reduced during refrigerator use without affecting the overall performance of the refrigerator.

[0093] It should also be noted that when the ambient temperature is within the second and third temperature ranges, the condenser fan speed matches the compressor speed. In some embodiments, a second preset rule for condenser fan operation within the fourth temperature range can be referenced. Regardless of the compressor's operating speed range, the condenser fan's operating speed should be lower than the operating speed within the corresponding speed range of the fourth temperature range. For example, when the ambient temperature is within the second temperature range and the compressor's operating speed is between 1500 and 2400 RPM, the condenser fan's operating speed should be less than 750 RPM, for example, it can operate at 690 RPM in the forward direction.

[0094] This application also provides an apparatus for reducing dust accumulation on a refrigerator condenser, applied to the method provided in the above embodiments. See also Figure 4 , Figure 4 The schematic diagram of the device structure provided in this application embodiment shows that the device includes: a condenser fan, a compressor, a data acquisition module, and a control module. The condenser fan is disposed between the compressor and the bottom-mounted condenser, and the data acquisition module is disposed outside the refrigerator. The condenser fan, compressor, and data acquisition module are electrically connected to the control module.

[0095] The data acquisition module is used to obtain the ambient temperature outside the refrigerator. The ambient temperature includes a first temperature range, a second temperature range, a third temperature range, a fourth temperature range, and a fifth temperature range. The temperatures of the first temperature range, the second temperature range, the third temperature range, the fourth temperature range, and the fifth temperature range are adjacent and increase from smallest to largest.

[0096] The control module is used to: send a first cycle operation command to the condenser fan when the ambient temperature is within a first temperature range. The condenser fan can run in both forward and reverse directions. When the condenser fan runs in the forward direction, the airflow is directed towards the bottom-mounted condenser. The first cycle operation command is to send a forward operation command to the condenser fan after controlling it to run in the reverse direction at a first speed for a first duration at a first time interval.

[0097] Within the second temperature range of ambient temperature, the operating status of the compressor is obtained; when the compressor starts running, a second cycle operation command is sent to the condenser fan; the second cycle operation command is to control the condenser fan to run in reverse at a first speed for a first time duration at second time intervals, and then send a forward operation command to the condenser fan.

[0098] When the ambient temperature is within the third temperature range, the operating status of the compressor is obtained; when the compressor starts running, a reverse operation command is sent to the condenser fan to control the condenser fan to run in reverse at the first speed for a third duration; the third duration is longer than the first duration.

[0099] When the ambient temperature is within the fourth temperature range, the operating speed of the compressor at the start of operation is obtained; the operating speed includes the first speed range; when the operating speed is within the first speed range, a reverse operation command is sent to the condenser fan to control the condenser fan to run in reverse at the first speed for a third duration.

[0100] When the ambient temperature is within the fifth temperature range, a first operating command is sent to the condenser fan to control the condenser fan to operate according to the first preset rule; until the refrigerator enters the defrost mode, a reverse operating command is sent to the condenser fan to control the condenser fan to run in reverse at the first speed for a third time.

[0101] The control module is also used to: obtain the continuous running time of the compressor; and when the continuous running time is greater than the second duration, send a forward operation command to the condenser fan to control the condenser fan to continue to run in the forward direction.

[0102] As can be seen from the above technical solutions, this application provides a method and apparatus for reducing dust accumulation on a refrigerator condenser. The method includes: acquiring the ambient temperature outside the refrigerator; the ambient temperature includes a first temperature range, a second temperature range, a third temperature range, a fourth temperature range, and a fifth temperature range, wherein the temperatures of the first, second, third, fourth, and fifth temperature ranges are adjacent and increase from small to large. Different operating directions and operating times of the condenser fan are set according to different ambient temperature ranges. By changing the operating direction of the condenser fan, the airflow direction through the bottom-mounted condenser is changed, and thus, through the force of the airflow, dust on the windward side of the bottom-mounted condenser is removed, reducing the accumulation process of dust on the bottom-mounted condenser and achieving the purpose of reducing dust accumulation on the bottom-mounted condenser, thereby solving the problem of easy dust accumulation on the bottom-mounted condenser of the refrigerator.

[0103] Similar parts between the embodiments provided in this application can be referred to mutually. The specific implementation methods provided above are only a few examples under the overall concept of this application and do not constitute a limitation on the scope of protection of this application. For those skilled in the art, any other implementation methods extended from the solution of this application without creative effort shall fall within the scope of protection of this application.

Claims

1. A method for reducing dust accumulation on a refrigerator condenser, characterized in that, include: The ambient temperature outside the refrigerator is obtained; the ambient temperature includes a first temperature range, a second temperature range, a third temperature range, a fourth temperature range, and a fifth temperature range, wherein the temperatures of the first temperature range, the second temperature range, the third temperature range, the fourth temperature range, and the fifth temperature range are adjacent and increase from small to large; If the ambient temperature is within the first temperature range, a first cycle operation command is sent to the condenser fan; the condenser fan operates in both forward and reverse directions, and when the condenser fan operates in the forward direction, the airflow is directed towards the bottom-mounted condenser; the first cycle operation command is, after controlling the condenser fan to run in the reverse direction at a first speed for a first duration at a first time interval, a forward operation command is sent to the condenser fan. If the ambient temperature is within the second temperature range, obtain the compressor's operating status; When the compressor starts running, a second cycle operation command is sent to the condenser fan; the second cycle operation command is to control the condenser fan to run in reverse at the first speed for the first time duration at second time intervals within a second duration, and then send a forward operation command to the condenser fan. If the ambient temperature is within the third temperature range, obtain the operating status of the compressor; When the compressor starts running, a reverse operation command is sent to the condenser fan to control the condenser fan to run in reverse at the first speed for a third duration; the third duration is longer than the first duration. If the ambient temperature is within the fourth temperature range, the operating speed of the compressor at the start of operation is obtained; the operating speed includes the first speed range. When the operating speed is within the first speed range, a reverse operation command is sent to the condenser fan to control the condenser fan to run in reverse at the first speed for a third duration; If the ambient temperature is within the fifth temperature range, a first operating command is sent to the condenser fan to control the condenser fan to operate according to the first preset rule; Until the refrigerator enters defrost mode, a reverse operation command is sent to the condenser fan to control the condenser fan to run in reverse at the first speed for a third duration.

2. The method for reducing dust accumulation on a refrigerator condenser according to claim 1, characterized in that, The condenser fan is a variable frequency axial flow fan.

3. The method for reducing dust accumulation on a refrigerator condenser according to claim 1, characterized in that, The first rotational speed is the maximum rotational speed of the condenser fan.

4. The method for reducing dust accumulation on a refrigerator condenser according to claim 1, characterized in that, The step of sending a second cycle operation command to the condenser fan after the compressor starts running further includes: Obtain the continuous operating time of the compressor; When the continuous running time is greater than the second duration, a forward operation command is sent to the condenser fan to control the condenser fan to continue to run in the forward direction.

5. The method for reducing dust accumulation on a refrigerator condenser according to claim 1, characterized in that, If the operating speed is not within the first speed range, a second operating command is sent to the condenser fan to control the condenser fan to operate according to the second preset rule.

6. The method for reducing dust accumulation on a refrigerator condenser according to claim 5, characterized in that, The operating speed also includes a second speed range, a third speed range, a fourth speed range, and a fifth speed range, wherein the speed values ​​of the first speed range, the second speed range, the third speed range, the fourth speed range, and the fifth speed range increase sequentially; the operating speed of the condenser fan includes the first speed, the second speed, the third speed, and the fourth speed, wherein the speed values ​​of the second speed, the third speed, and the fourth speed increase sequentially; The second preset rule includes: When the operating speed is within the second speed range, the condenser fan is controlled to run in the positive direction at the second speed. When the operating speed is within the third speed range, the condenser fan is controlled to run in the positive direction at the third speed. When the operating speed is within the fourth speed range, the condenser fan is controlled to run in the positive direction at the fourth speed. When the operating speed is within the fifth speed range, the condenser fan is controlled to run in the forward direction at the first speed.

7. The method for reducing dust accumulation on a refrigerator condenser according to claim 6, characterized in that, The first preset rule includes: When the operating speed is within the first speed range, the condenser fan is controlled to run forward at a speed greater than the third speed and less than the fourth speed. When the operating speed is within the second speed range and the third speed range, the condenser fan is controlled to run in the positive direction at the fourth speed. When the operating speed is within the fourth speed range, the condenser fan is controlled to run forward at a speed greater than the fourth speed. When the operating speed is within the fifth speed range, the condenser fan is controlled to run in the forward direction at the first speed.

8. A device for reducing dust accumulation on a refrigerator condenser, characterized in that, The method for reducing dust accumulation on a refrigerator condenser according to any one of claims 1-7, the device comprising: a condenser fan, a compressor, a data acquisition module, and a control module; the condenser fan is disposed between the compressor and the bottom-mounted condenser, the data acquisition module is disposed outside the refrigerator, and the condenser fan, compressor, and data acquisition module are electrically connected to the control module respectively; The acquisition module is used to: acquire the ambient temperature outside the refrigerator; the ambient temperature includes a first temperature range, a second temperature range, a third temperature range, a fourth temperature range and a fifth temperature range, the temperatures of the first temperature range, the second temperature range, the third temperature range, the fourth temperature range and the fifth temperature range are adjacent and increase from small to large; The control module is used to: send a first cycle operation command to the condenser fan when the ambient temperature is within the first temperature range; the condenser fan's operating direction includes forward and reverse, and when the condenser fan is running forward, the airflow is directed towards the bottom-mounted condenser; the first cycle operation command is to send a forward operation command to the condenser fan after controlling the condenser fan to run in reverse at a first speed for a first duration at a first time interval; The operating status of the compressor is obtained when the ambient temperature is within the second temperature range; When the compressor starts running, a second cycle operation command is sent to the condenser fan; the second cycle operation command is to control the condenser fan to run in reverse at the first speed for the first time duration at second time intervals within a second duration, and then send a forward operation command to the condenser fan. The operating status of the compressor is obtained within the third temperature range of the ambient temperature. When the compressor starts running, a reverse operation command is sent to the condenser fan to control the condenser fan to run in reverse at the first speed for a third duration; the third duration is longer than the first duration. The operating speed of the compressor is obtained when the ambient temperature is within the fourth temperature range; the operating speed includes a first speed range. When the operating speed is within the first speed range, a reverse operation command is sent to the condenser fan to control the condenser fan to run in reverse at the first speed for a third duration; When the ambient temperature is within the fifth temperature range, a first operating command is sent to the condenser fan to control the condenser fan to operate according to a first preset rule; Until the refrigerator enters defrost mode, a reverse operation command is sent to the condenser fan to control the condenser fan to run in reverse at the first speed for a third duration.

9. The device for reducing dust accumulation on a refrigerator condenser according to claim 8, characterized in that, The control module is also used for: Obtain the continuous operating time of the compressor; When the continuous running time is greater than the second duration, a forward operation command is sent to the condenser fan to control the condenser fan to continue to run in the forward direction.

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