CN109373698B - Fan rotating speed control method for air-cooled refrigerator, refrigerator and readable storage medium - Google Patents
Fan rotating speed control method for air-cooled refrigerator, refrigerator and readable storage medium Download PDFInfo
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- CN109373698B CN109373698B CN201811307844.5A CN201811307844A CN109373698B CN 109373698 B CN109373698 B CN 109373698B CN 201811307844 A CN201811307844 A CN 201811307844A CN 109373698 B CN109373698 B CN 109373698B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/003—Arrangement or mounting of control or safety devices for movable devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
Abstract
The invention discloses a method for controlling the rotating speed of a fan of an air-cooled refrigerator, which comprises the following steps: acquiring the ambient temperature of the area where the refrigerator is located and the temperature of a refrigerating chamber in real time, and determining a fan rotating speed adjusting strategy according to the ambient temperature; acquiring a room temperature monitoring interval corresponding to the determined adjustment strategy, and judging whether the room temperature is in the room temperature monitoring interval corresponding to the determined adjustment strategy; if so, monitoring the duration of the room temperature kept in the room temperature monitoring interval, and dynamically adjusting the rotating speed of the fan according to the determined adjusting strategy, the room temperature and the duration. The invention also discloses a refrigerator and a readable storage medium. The invention solves the problem that the temperature control of the refrigerator compartment is not accurate enough because the control of the rotating speed of the fan is single and the actual accommodating capacity and the temperature change condition of the compartment cannot be considered.
Description
Technical Field
The invention relates to the field of electric appliance control, in particular to a method for controlling the rotating speed of a fan of an air-cooled refrigerator, the refrigerator and a readable storage medium.
Background
With the gradual improvement of living standard, people have higher and higher requirements on household appliances, and a direct-cooling refrigerator and a wind-cooling refrigerator are gradually distinguished from an original refrigerator as essential appliances in family life. The air-cooled refrigerator is controlled by adjusting the rotating speed of a fan, and the rotating speed of the fan is generally controlled according to the ambient temperature of the refrigerator when the fan operates according to the existing fan rotating speed control scheme. When the environmental temperature is higher than the set temperature, the high-speed fan control is carried out; and when the ambient temperature is lower than the set temperature, controlling the low-speed fan. The control method of the rotating speed of the fan of the air-cooled refrigerator is single, and the actual accommodating capacity and temperature change conditions of the refrigerator chamber cannot be considered, so that the temperature of the refrigerator chamber is not accurately controlled.
Disclosure of Invention
The invention provides a method for controlling the rotating speed of a fan of an air-cooled refrigerator, the refrigerator and a readable storage medium, and aims to solve the technical problem that the rotating speed control mode of the fan of the air-cooled refrigerator is single, so that the temperature control of a refrigerator compartment is not accurate enough.
In order to achieve the aim, the invention provides a method for controlling the rotating speed of a fan of an air-cooled refrigerator, which comprises the following steps:
acquiring the ambient temperature of an area where a refrigerator is located and the temperature of a refrigerating chamber of the refrigerator in real time, and determining a fan rotating speed adjusting strategy according to the ambient temperature;
acquiring a room temperature monitoring interval corresponding to the determined adjustment strategy, and judging whether the temperature of the refrigerating room is in the room temperature monitoring interval corresponding to the determined adjustment strategy;
and when the temperature of the refrigerating chamber is in a chamber temperature monitoring interval corresponding to the determined adjustment strategy, monitoring the duration of the chamber temperature kept in the chamber temperature monitoring interval, and dynamically adjusting the rotating speed of the fan according to the determined adjustment strategy, the chamber temperature and the duration.
Optionally, after the step of determining whether the temperature of the refrigerated compartment is within a compartment temperature monitoring interval corresponding to the determined adjustment strategy, the method further includes:
and when the temperature of the refrigerating chamber is not in a chamber temperature monitoring interval corresponding to the determined adjustment strategy, adjusting the rotating speed of the fan according to the determined adjustment strategy and the chamber temperature.
Optionally, the step of determining a fan rotation speed adjustment strategy according to the ambient temperature includes:
judging whether the environment temperature is greater than a preset environment temperature threshold value or not;
when the environment temperature is smaller than or equal to the preset environment temperature threshold value, determining an adjustment strategy as a first adjustment strategy;
and when the environment temperature is greater than the preset environment temperature threshold value, determining that the adjustment strategy is a second adjustment strategy.
Optionally, when the adjustment strategy is the first adjustment strategy, the chamber temperature monitoring interval is (a, b), where a is the first preset temperature, b is the second preset temperature, and a is less than b;
the step of adjusting the rotating speed of the fan according to the determined adjusting strategy and the room temperature comprises the following steps:
when the adjusting strategy is a first adjusting strategy and the room temperature is greater than b, controlling the fan to operate at a first rotating speed;
and when the adjustment strategy is a first adjustment strategy and the temperature of the compartment is less than or equal to a, controlling the fan to operate at a second rotating speed, wherein the second rotating speed is less than the first rotating speed.
Optionally, the step of dynamically adjusting the rotation speed of the fan according to the determined adjustment strategy, the room temperature, and the duration includes:
when the adjustment strategy is a first adjustment strategy, judging the time range of the duration in real time;
when the duration time is less than or equal to T1, controlling the fan to operate at a second rotating speed;
when the duration is longer than T1 and less than or equal to T2, controlling the fan to operate at a third rotating speed, wherein the third rotating speed is between the first rotating speed and the second rotating speed, T1 is less than T2, T1 is a first preset time, and T2 is a second preset time;
and when the duration is greater than T2, controlling the fan to operate at a first rotating speed.
Optionally, the step of dynamically adjusting the rotation speed of the fan according to the determined adjustment strategy, the room temperature, and the duration includes:
when the adjustment strategy is a second adjustment strategy and the compartment temperature is greater than a preset compartment temperature threshold value, judging whether the duration time is greater than T3 or not, wherein T3 is a third preset time;
when the duration is longer than T3, controlling the fan to operate at a fourth rotating speed;
and when the duration is less than or equal to T3, controlling the fan to operate at a fifth rotating speed, wherein the fifth rotating speed is less than the fourth rotating speed.
Optionally, the step of adjusting the rotation speed of the fan according to the determined adjustment strategy and the room temperature includes:
and when the adjustment strategy is a second adjustment strategy and the compartment temperature is less than or equal to a preset compartment temperature threshold value, controlling the fan to operate at a fifth rotating speed.
Optionally, the method further comprises:
continuously detecting the temperature of the refrigerating chamber;
and when the temperature of the refrigerating chamber is detected to be lower than the preset shutdown temperature, controlling the fan to stop running, and controlling the fan to start after the temperature of the refrigerating chamber is increased back to the preset startup temperature.
In addition, in order to achieve the above object, the present invention further provides a refrigerator, which includes a blower, a processor, a memory, and a computer program stored in the memory, wherein the computer program, when executed by the processor, implements the steps of the method for controlling the rotational speed of the blower of the air-cooled refrigerator as described above.
In addition, in order to achieve the above object, the present invention further provides a readable storage medium, wherein the computer readable storage medium stores a computer program, and the computer program, when executed by a processor, implements the steps of the method for controlling the rotational speed of the fan of the air-cooled refrigerator as described above.
According to the air-cooled refrigerator fan rotating speed control method, the refrigerator and the readable storage medium, different adjustment strategies are determined according to the environment temperature of the area where the refrigerator is located, and the environment temperature is obtained while the room temperature is monitored. For example, when a large number of articles are put into the refrigerator or the door is opened to take the articles, the temperature of the compartment can be changed, if the temperature of the compartment is in the monitoring interval of the adjustment strategy, the fan can be controlled to operate according to the preset program of the control strategy according to the monitored temperature of the compartment and the duration time of the compartment temperature kept in the monitoring interval, so that the actual accommodation capacity and the continuous temperature change condition of the compartment of the refrigerator are considered, the temperature control of the compartment of the refrigerator is more accurate, and the control mode is diversified.
Drawings
FIG. 1 is a schematic flow chart of a first embodiment of a method for controlling the rotational speed of a fan of an air-cooled refrigerator according to the present invention;
FIG. 2 is a detailed flowchart of step S10 of the method for controlling the rotational speed of the fan of the air-cooled refrigerator according to the second embodiment of the present invention;
FIG. 3 is a schematic flow chart of a third embodiment of a method for controlling the rotational speed of a fan of an air-cooled refrigerator according to the present invention;
fig. 4 is a schematic flow chart of a fourth embodiment of a method for controlling the rotational speed of a fan of an air-cooled refrigerator according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic flow chart of a method for controlling a rotational speed of a fan of an air-cooled refrigerator according to a first embodiment of the present invention. In this embodiment, the method comprises:
step S10, acquiring the ambient temperature of the area where the refrigerator is located and the temperature of the refrigerating chamber of the refrigerator in real time, and determining a fan rotating speed adjusting strategy according to the ambient temperature;
the present embodiment is applied to an air-cooled refrigerator, which includes a compartment, a blower fan, and a refrigeration system, and the refrigeration system may include an evaporator, a capillary tube, and the like, wherein the blower fan is used to facilitate the flow of air in the refrigerator through the rotation of a motor to realize temperature control. It can be understood that the higher the rotating speed of the fan, the faster the refrigerator cools; conversely, the lower the rotating speed of the fan of the refrigerator is, the lower the temperature change speed of the refrigerator is. The refrigerator compartment may include a cold storage compartment, a freezing compartment and/or a temperature changing compartment.
In this embodiment, a compartment temperature sensor may be disposed in a refrigerating compartment of the refrigerator to obtain a compartment temperature. An ambient temperature sensor can also be arranged outside the refrigerator body and used for acquiring ambient temperature. Furthermore, a fan rotating speed adjusting strategy of the refrigerator can be determined according to the environment temperature acquired by the environment temperature sensor. The rotating speed adjusting strategies are at least two adjusting strategies according to a temperature control adjusting program which is preset according to actual needs before the refrigerator leaves a factory. The fan rotating speed adjusting strategy can be flexibly determined according to different environmental temperatures of the refrigerator after leaving the factory so as to realize temperature adjustment of the internal chamber of the refrigerator. It can be understood that, in the environment with lower ambient temperature, the refrigerator can have sufficient heat exchange, the refrigeration efficiency is improved, and the energy consumption is higher than that of the same refrigerator with higher ambient temperature; on the contrary, the higher the ambient temperature is, the more the relative energy consumption of the refrigerator is increased, so that different fan rotating speed adjusting strategies can be set according to different ambient temperatures to realize flexible regulation and control of the refrigerator temperature.
Step S20, acquiring a compartment temperature monitoring interval corresponding to the determined adjustment strategy, and judging whether the temperature of the refrigerating compartment is in the compartment temperature monitoring interval corresponding to the determined adjustment strategy; if yes, go to step S30;
it should be noted that the adjustment strategy may include one or more fan rotation speed adjustment conditions and a plurality of fan rotation speeds, where the fan rotation speed condition may be preset in combination with a real-time temperature change curve of the refrigeration compartment, for example, a duration of a change of the temperature of the refrigeration compartment in a certain interval may be obtained according to the real-time temperature change curve, and then different fan rotation speeds are determined according to a difference of the durations; the execution of the subsequent fan speed adjustment condition can be determined according to the temperature of the refrigerating compartment, for example, the corresponding fan speed can be directly determined according to the temperature of the refrigerating compartment in a certain interval, and the corresponding fan speed can be determined according to the duration time of the temperature of the refrigerating compartment in another interval. In the present embodiment, the adjustment strategy is exemplified as how to perform the subsequent fan speed adjustment condition determined by the temperature of the refrigerating compartment.
And step S30, monitoring the duration of the room temperature kept in the room temperature monitoring interval, and dynamically adjusting the rotating speed of the fan according to the determined adjusting strategy, the room temperature and the duration.
And when the temperature of the refrigerating chamber is in the monitoring interval, namely the temperature of the refrigerating chamber is shown in the adjusting strategy, the temperature of the refrigerating chamber and the duration time in the monitoring interval are combined to be used as the condition for adjusting the rotating speed of the fan, so that the rotating speed of the fan is determined, and the control of the temperature of the refrigerating chamber is finally realized.
It can be understood that the fan rotation speed adjustment strategy is actually determined according to the ambient temperature, when the temperature of the refrigerating chamber is in the chamber temperature monitoring interval, the fan rotation speed adjustment is actually carried out by combining the ambient temperature, the refrigerating chamber temperature and the actual temperature maintaining condition of the refrigerating chamber of the refrigerator, and the temperature of the refrigerating chamber is mainly influenced by the actual accommodating condition of the chamber. When more built-in articles are placed suddenly, the compartment temperature changes, the adjustment effect of the compartment temperature is influenced by the actual accommodating amount and the rotating speed operation of a refrigerator fan, and the adjustment effect can be determined according to the continuous change condition of the compartment temperature, so that when the refrigerating compartment temperature is in a compartment temperature monitoring interval, the control of the refrigerator compartment temperature can be determined by using an adjustment strategy determined by the ambient temperature, taking the refrigerating compartment temperature and the duration time of the real-time monitored refrigerating compartment temperature in the interval as parameters, and taking the actual accommodating amount and the temperature change condition of the refrigerator compartment as influence factors.
In the embodiment, the ambient temperature of the area where the refrigerator is located and the temperature of the refrigerating chamber of the refrigerator are obtained in real time, and the fan rotating speed adjusting strategy is determined according to the ambient temperature; acquiring a room temperature monitoring interval corresponding to the determined adjustment strategy, and judging whether the room temperature is in the room temperature monitoring interval corresponding to the determined adjustment strategy; if so, monitoring the duration of the room temperature kept in the room temperature monitoring interval, and dynamically adjusting the rotating speed of the fan according to the determined adjusting strategy, the room temperature and the duration. Therefore, the temperature control is carried out by combining the ambient temperature, the room temperature and the holding time of the refrigerating room temperature acquired in real time in the monitoring interval, the influence factors of temperature change and actual accommodation amount are considered, the temperature control of the refrigerator room is more accurate, and the control mode of the rotating speed of the fan is more flexible and diversified.
Further, with continuing reference to fig. 1, when the determination result of step S20 is "no", the following steps are also executed:
and step S40, adjusting the rotating speed of the fan according to the determined adjusting strategy and the room temperature.
When the temperature of the refrigerating compartment is not in the compartment temperature monitoring interval needing to be monitored, the rotating speed of the fan can be directly adjusted according to the determined adjusting strategy and the compartment temperature. It will be appreciated that the duration is not used as an adjustment parameter, possibly because the temperature change of the self-refrigerating compartment is too large compared with the temperature during normal operation, for example, the temperature at which the user subjectively thinks that the refrigeration effect is not good; or the temperature of the refrigerating chamber runs in a normal temperature range, the rotating speed of the fan can be quickly determined directly by using the ambient temperature and the temperature of the refrigerating chamber without using the duration as an adjusting parameter, so that the aim of temperature control adjustment can be quickly achieved when the temperature of the refrigerating chamber is greatly deviated from the temperature of the normal refrigerating chamber, and the fan is operated at a rotating speed with low power consumption when the temperature of the refrigerating chamber of the refrigerator runs normally or deviates slightly to be ignored, so that the temperature of the refrigerating chamber is kept in the normal running range and electric energy is saved. The scheme considers that the deviation between the temperature of the refrigerating chamber and the normal operation temperature is too large or the operation is normal, the condition of adjusting the rotating speed of the fan in the duration time does not need to be considered, and the adjusting mode of the rotating speed of the fan is more flexible and diversified.
Further, referring to fig. 2, fig. 2 is a detailed flowchart of step S10 in the second embodiment of the method for controlling the rotational speed of the fan of the air-cooled refrigerator according to the present invention, in this embodiment, the step S10 includes:
step S11, acquiring the ambient temperature of the area where the refrigerator is located and the temperature of the refrigerating chamber of the refrigerator in real time;
step S12, judging whether the environmental temperature is larger than a preset environmental temperature threshold value; if not, go to step S13; if yes, go to step S14;
step S13, determining the adjustment policy as a first adjustment policy;
in step S14, the adjustment policy is determined to be a second adjustment policy.
The preset environmental temperature threshold value can be determined by referring to the average annual temperature of the place where the refrigerator is sold. Taking the north american region as an example, if the reference ambient temperature at the north american energy consumption standard is set to 32 ℃, the preset ambient temperature threshold of the refrigerator sold to the north american region may be set to 32 ℃. In the embodiment, two different fan rotating speed adjusting strategies are determined by presetting the environmental temperature threshold.
In this embodiment, when the adjustment strategy is the first adjustment strategy, the compartment temperature monitoring interval is (a, b), where a is a first preset temperature, b is a second preset temperature, and a is smaller than b, please refer to fig. 1 and fig. 3 together, and fig. 3 is a schematic flow chart of a third embodiment of the method for controlling the rotational speed of the blower of the air-cooled refrigerator according to the present invention, in this embodiment, step S40 includes:
step S41, when the adjustment strategy is a first adjustment strategy and the room temperature is greater than b, controlling the fan to operate at a first rotating speed;
and step S42, when the adjustment strategy is the first adjustment strategy and the temperature of the compartment is less than or equal to a, controlling the fan to operate at a second rotating speed, wherein the second rotating speed is less than the first rotating speed.
The value of a in the compartment temperature monitoring interval (a, b) can refer to the temperature capable of inhibiting the growth and reproduction of bacteria and/or the value of the appropriate temperature of the refrigerating compartment acceptable by a user, for example, the reference value of a can be set to 8 ℃, the value of b in the compartment temperature monitoring interval can refer to the refrigerating compartment temperature when the refrigerating effect of the refrigerator is not good, for example, when the refrigerating temperature of the refrigerator exceeds 10 ℃, the refrigerating effect of the refrigerator is not good, the parameter b can be set to 10 ℃, or, because the refrigerating temperature of the general refrigerator is 0-12 ℃, the refrigerating effect of the refrigerator is not achieved when the refrigerating temperature of the refrigerator exceeds 12 ℃, the reference value of b can be set to 12 ℃.
Substantially when the ambient temperature is less than or equal to the preset ambient temperature threshold, the determined first adjustment strategy comprises: when the temperature of the compartment is less than or equal to a, the duration time of the temperature of the compartment does not need to be monitored, and the fan is directly controlled to operate at a second rotating speed; when the temperature of the compartment is greater than b, the temperature of the compartment cannot achieve the refrigerating effect, the duration time of the temperature of the compartment does not need to be monitored, the temperature of the compartment needs to be reduced as soon as possible, and the fan is controlled to operate at the first rotating speed. According to the scheme, when the temperature of the refrigerating chamber is not in the chamber temperature monitoring interval, the fan rotating speed adjustment of two different rotating speeds is realized according to the first adjustment strategy, the combination of the temperature of the refrigerating chamber of the refrigerator and the environment temperature is facilitated, the determination of different rotating speeds of different running scenes of the refrigerator is realized, and the control is accurate.
Further, with continuing reference to fig. 1 and fig. 3, in the present embodiment, step S30 includes:
step S31, when the adjustment strategy is the first adjustment strategy, monitoring the duration of the room temperature kept in the room temperature monitoring interval, and determining the time range of the duration in real time;
step S32, when the duration time is less than or equal to T1, controlling the fan to operate at a second rotating speed;
step S33, when the duration is longer than T1 and less than or equal to T2, controlling the fan to operate at a third rotating speed, wherein the third rotating speed is between the first rotating speed and the second rotating speed, T1 is less than T2, T1 is a first preset time, and T2 is a second preset time;
and step S34, when the duration is longer than T2, controlling the fan to operate at a first rotating speed.
When the temperature of the refrigerating chamber is in the chamber temperature monitoring interval (a, b), the duration of the real-time acquired refrigerating chamber temperature kept in the chamber temperature monitoring interval needs to be monitored, and then different fan rotating speeds are determined according to the duration of the duration And in the meantime, the temperature of the refrigerating compartment still floats in the compartment temperature monitoring interval, so that the duration time exceeds T2, and the fan is controlled to operate at the first rotating speed, wherein the first rotating speed can be consistent with the first rotating speed in the step S41, or can be determined according to the actual speed of high-rotating-speed operation of the fan. According to the scheme, after the control is carried out through the first adjustment strategy according to the environment temperature, the rotating speed of the fan is dynamically adjusted according to the duration time of the refrigerating compartment temperature in the compartment temperature monitoring interval, so that the real-time change condition of the compartment temperature is considered during the control of the refrigerator compartment temperature, and the temperature adjustment is more accurate.
Hereinafter, T1 and T2 are exemplified as 30min and 60min, respectively. When the temperature duration of the room temperature does not reach 30min, the fan operates at a low power consumption rotating speed, for example, at a voltage of 6V; when the duration time of the compartment temperature in the monitoring interval exceeds 30min but not more than 60min, the fan is controlled to operate at a third rotating speed to meet the cooling requirement, and at the moment, the fan operates at normal power consumption, for example, the fan operates at the voltage of 8-9V, wherein 8-9V is the normal operating voltage of the fan of the air-cooled refrigerator. When the compartment temperature has lasted for more than 60min in the monitoring interval, the compartment temperature needs to be reduced rapidly, and the fan needs a relatively high rotational speed to reduce the compartment temperature, for example, to operate at a voltage of 12V. And when the duration of the room temperature maintenance is monitored, if the real-time acquired refrigerating room temperature is not in the corresponding room temperature monitoring interval, the rotating speed control program of the refrigerator fan determines an adjustment strategy again according to the environment temperature so as to control the fan to operate at the corresponding rotating speed.
It can be understood that the fan is driven by a motor, the motor is a power device for converting electric energy into mechanical energy, the fan is a machine for increasing gas pressure and discharging gas by means of converted mechanical energy, the fan rotation speed can be controlled by voltage, taking the rotation speed of most refrigerator fans as an example, the rotation speed is generally divided into a high rotation speed and a low rotation speed, the set voltage is generally 12V at the high rotation speed, the set voltage is generally 9V at the low rotation speed, that is, the reference voltage corresponding to the setting of the first rotation speed in this embodiment is 12V, and the reference voltage of the third rotation speed is 9V. The invention sets three-stage rotating speed control, namely high rotating speed, normal rotating speed (or middle rotating speed) and low rotating speed, flexibly controls the duration of the refrigerating chamber temperature in the chamber temperature monitoring interval according to the duration of the refrigerating chamber temperature, saves energy consumption, considers the continuous change condition of the chamber temperature and controls temperature more accurately.
Further, please refer to fig. 1 and fig. 4 together, fig. 4 is a schematic flow chart of a fourth embodiment of a method for controlling a rotational speed of a fan of an air-cooled refrigerator according to the present invention, in this embodiment, step S30 further includes:
step S35, when the adjustment strategy is a second adjustment strategy and the compartment temperature is greater than a preset compartment temperature threshold, monitoring the duration of the compartment temperature kept in the compartment temperature monitoring interval;
step S36, determining whether the duration is greater than T3, where T3 is a third preset time; if yes, go to step S37, otherwise go to step S38;
step S37, controlling the fan to operate at a fourth rotating speed;
and step S38, controlling the fan to operate at a fifth rotating speed, wherein the fifth rotating speed is less than the fourth rotating speed.
When the temperature of the refrigerating chamber is greater than the preset chamber temperature threshold value, the duration of the temperature of the refrigerating chamber which is acquired in real time and is kept at the temperature of the chamber needs to be monitored, and then different fan rotating speeds are determined according to the duration. That is, the second adjustment strategy includes: initially, when the duration is less than or equal to T3, the fan is controlled to operate at a fifth speed, wherein the fifth speed may be the same as the third speed in step S33 of the first strategy, or may be set according to the actual normal operation speed of the refrigerator. If the fan operates at the fifth rotation speed, the temperature of the refrigerating compartment is still greater than the preset compartment temperature threshold, the duration time exceeds T3, the fan can be controlled to operate at a fourth rotation speed, wherein the fourth rotation speed can be consistent with the first rotation speed in the steps S34 and S41 in the first strategy, or can be determined according to the actual speed of high-speed operation of the fan. According to the scheme, after the second adjustment strategy is determined according to the environment temperature for control, the rotating speed of the fan is dynamically adjusted according to the duration time of the temperature of the refrigerating chamber, so that the temperature of the refrigerating chamber is more accurately controlled.
The preset chamber temperature threshold in the second adjustment strategy may be consistent with or inconsistent with the value of b in the first adjustment strategy, and the third preset time T3 may be consistent with T1 in S32 in the first adjustment strategy or set according to actual conditions. The refrigeration temperature range of a common refrigerator is 0-12 ℃, the refrigeration effect of the refrigerator can not be achieved when the refrigeration temperature exceeds 12 ℃, for example, the refrigeration effect can not be achieved, a preset compartment temperature threshold value is set to be 12 ℃, T3 is 30min, for example, when the compartment temperature is higher than 12 ℃ and the duration time does not reach 30min, the fan operates according to the actual normal operation rotating speed of the refrigerator, for example, the cooling requirement can be met when the compartment temperature operates at the voltage of 9V; when the temperature of the compartment is continuously over 30min, the temperature of the compartment needs to be reduced as soon as possible, and the fan is controlled to operate at a high rotating speed, for example, at a voltage of 12V. And when the duration of the room temperature maintenance is monitored, if the real-time acquired refrigerating room temperature is not in the corresponding room temperature monitoring interval, the program or the process controls the fan to operate at the corresponding rotating speed according to the environment temperature determination and adjustment strategy again.
Further, please continue to refer to fig. 1 and fig. 4, in this embodiment, step S40 further includes:
and step S43, when the adjustment strategy is the second adjustment strategy and the room temperature is less than or equal to the preset room temperature threshold, controlling the fan to operate at a fifth rotating speed.
When the temperature of the refrigerating chamber is smaller than or equal to the preset chamber temperature threshold value, the duration time does not need to be monitored, and the fan is directly controlled to operate at a fifth rotating speed.
Taking the preset compartment temperature threshold value of 12 ℃ as an example, when the compartment temperature is less than or equal to 12 ℃, the compartment temperature is within the normal refrigeration temperature range of the refrigerator, so that time does not need to be monitored, the fan can be directly controlled to operate at the fifth rotating speed, the fifth rotating speed can be consistent with the fifth rotating speed in S38, and the fifth rotating speed can be set according to the actual normal operation rotating speed of the refrigerator, for example, the fifth rotating speed is set at the voltage of 9V.
When the ambient temperature is higher, the low rotating speed of the fan cannot meet the cooling requirement, the temperature of the refrigerator compartment can be reduced as soon as possible only by maintaining the higher rotating speed of the fan, and the temperature of the refrigerator compartment is controlled more accurately by flexibly switching different rotating speeds of the fan.
It can be understood that, when the ambient temperature is greater than the preset ambient temperature threshold, the second adjustment strategy is executed, and at this time, the temperature difference between the external ambient temperature and the temperature of the refrigerating chamber is large, and the air flow rate required to be generated when the refrigerating chamber maintains the same temperature is increased, so that the second adjustment strategy adopts a two-stage adjustment and control mode, and a three-stage adjustment and control mode including a low-power-consumption rotating speed in the first adjustment strategy is not adopted.
Optionally, in other embodiments, a preset shutdown temperature and a preset startup temperature may also be set to prevent the temperature in the refrigerating compartment from being too low and causing damage to the articles in the compartment. The specific implementation may be that, when the compartment temperature is detected to be lower than the preset shutdown temperature, the blower is controlled to stop operating, and after the compartment temperature is increased back to the preset startup temperature, the blower is controlled to start. The execution of the steps can be carried out simultaneously with the fan adjusting strategy, the whole temperature control function is achieved, and the fan stops running as long as the temperature is lower than the preset shutdown temperature, for example, the shutdown temperature reference value is 0 ℃. During a period of time when the fan stops operating, the temperature of the refrigerating compartment rises until a preset starting temperature is reached, wherein the preset starting temperature reference value is greater than 0 ℃, for example, the preset starting temperature is 2 ℃. The scheme of presetting shutdown temperature and startup temperature and controlling the start and stop of the fan plays a role in integrally monitoring the temperature of the refrigerating chamber, and prevents the damage to articles in the chamber.
The present invention also provides a refrigerator, including: the fan control system comprises a fan, a processor, a memory and a computer program in the memory, wherein the processor is used for realizing the steps of the fan rotating speed control method in the embodiment when executing the computer program stored in the memory.
The invention further provides a readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the steps of the fan rotation speed control method according to any one of the above-mentioned embodiments. And the above-mentioned storage media include: various media capable of storing program codes, such as read-only memory, magnetic disk, optical disk, U disk, removable hard disk, or random access memory.
In the present invention, the terms "first", "second", "third", "fourth" and "fifth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and those skilled in the art can understand the specific meanings of the above terms in the present invention according to specific situations.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although the embodiment of the present invention has been shown and described, the scope of the present invention is not limited thereto, it should be understood that the above embodiment is illustrative and not to be construed as limiting the present invention, and that those skilled in the art can make changes, modifications and substitutions to the above embodiment within the scope of the present invention, and that these changes, modifications and substitutions should be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A method for controlling the rotating speed of a fan of an air-cooled refrigerator is characterized by comprising the following steps:
acquiring the ambient temperature of an area where a refrigerator is located and the temperature of a refrigerating chamber of the refrigerator in real time, and determining a fan rotating speed adjusting strategy according to the ambient temperature;
acquiring a room temperature monitoring interval corresponding to the determined adjustment strategy, and judging whether the temperature of the refrigerating room is in the room temperature monitoring interval corresponding to the determined adjustment strategy;
when the temperature of the refrigerating chamber is in a chamber temperature monitoring interval corresponding to a determined adjusting strategy, monitoring the duration of the chamber temperature kept in the chamber temperature monitoring interval so as to dynamically adjust the rotating speed of the fan according to the determined adjusting strategy, the chamber temperature and the duration;
the step of dynamically adjusting the rotating speed of the fan according to the determined adjusting strategy, the room temperature and the duration time comprises the following steps:
when the adjustment strategy is a first adjustment strategy, judging the time range of the duration in real time;
when the duration time is less than or equal to T1, controlling the fan to operate at a second rotating speed;
when the duration is longer than T1 and less than or equal to T2, controlling the fan to operate at a third rotating speed, wherein the third rotating speed is between the first rotating speed and the second rotating speed, T1 is less than T2, T1 is a first preset time, and T2 is a second preset time;
when the duration is longer than T2, controlling the fan to operate at a first rotating speed;
the step of determining the fan rotating speed adjusting strategy according to the environment temperature comprises the following steps:
judging whether the environment temperature is greater than a preset environment temperature threshold value or not;
and when the environment temperature is less than or equal to the preset environment temperature threshold value, determining that the adjustment strategy is a first adjustment strategy.
2. The method for controlling the fan speed of the air-cooled refrigerator according to claim 1, wherein after the step of determining whether the temperature of the refrigerating compartment is within a compartment temperature monitoring interval corresponding to the determined adjustment strategy, the method further comprises:
and when the temperature of the refrigerating chamber is not in a chamber temperature monitoring interval corresponding to the determined adjustment strategy, adjusting the rotating speed of the fan according to the determined adjustment strategy and the chamber temperature.
3. The method for controlling the fan speed of an air-cooled refrigerator according to claim 2, wherein the step of determining the fan speed adjustment strategy according to the ambient temperature further comprises:
judging whether the environment temperature is greater than a preset environment temperature threshold value or not;
and when the environment temperature is greater than the preset environment temperature threshold value, determining that the adjustment strategy is a second adjustment strategy.
4. The method for controlling the fan speed of an air-cooled refrigerator according to claim 3, wherein when the adjustment strategy is a first adjustment strategy, the monitoring interval of the compartment temperature is (a, b), wherein a is a first preset temperature, b is a second preset temperature, and a is less than b;
the step of adjusting the rotating speed of the fan according to the determined adjusting strategy and the room temperature comprises the following steps:
when the adjusting strategy is a first adjusting strategy and the room temperature is greater than b, controlling the fan to operate at a first rotating speed;
and when the adjustment strategy is a first adjustment strategy and the temperature of the compartment is less than or equal to a, controlling the fan to operate at a second rotating speed, wherein the second rotating speed is less than the first rotating speed.
5. The method for controlling the fan speed of an air-cooled refrigerator according to claim 3, wherein the step of dynamically adjusting the fan speed according to the determined adjustment strategy, the room temperature and the duration comprises:
when the adjustment strategy is a second adjustment strategy and the compartment temperature is greater than a preset compartment temperature threshold value, judging whether the duration time is greater than T3 or not, wherein T3 is a third preset time;
when the duration is longer than T3, controlling the fan to operate at a fourth rotating speed;
and when the duration is less than or equal to T3, controlling the fan to operate at a fifth rotating speed, wherein the fifth rotating speed is less than the fourth rotating speed.
6. The method for controlling the fan speed of an air-cooled refrigerator according to claim 5, wherein the step of adjusting the fan speed according to the determined adjustment strategy and the compartment temperature comprises the steps of:
and when the adjustment strategy is a second adjustment strategy and the compartment temperature is less than or equal to a preset compartment temperature threshold value, controlling the fan to operate at a fifth rotating speed.
7. The method for controlling the fan speed of the air-cooled refrigerator according to any one of claims 1 to 6, further comprising:
continuously detecting the temperature of the refrigerating chamber;
and when the temperature of the refrigerating chamber is detected to be lower than the preset shutdown temperature, controlling the fan to stop running, and controlling the fan to start after the temperature of the refrigerating chamber is increased back to the preset startup temperature.
8. A refrigerator, characterized in that the refrigerator comprises a fan, a processor, a memory, and a computer program stored in the memory, wherein the computer program, when executed by the processor, implements the method for controlling the fan speed of an air-cooled refrigerator according to any one of claims 1 to 7.
9. A readable storage medium, wherein the readable storage medium stores thereon a computer program, which when executed by a processor, implements the steps of the method for controlling the rotational speed of the blower of an air-cooled refrigerator according to any one of claims 1 to 7.
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| CN110470099A (en) * | 2019-08-13 | 2019-11-19 | 南京创维家用电器有限公司 | A kind of control method of machinery air door variable-frequency electric brain refrigerator |
| CN111503934B (en) * | 2020-04-27 | 2021-11-30 | 合肥美菱物联科技有限公司 | Refrigeration control method |
| CN112032840B (en) * | 2020-08-31 | 2022-10-25 | 青岛海尔空调电子有限公司 | Embedded air conditioner, air outlet control method thereof and computer readable storage medium |
| JP2022085483A (en) * | 2020-11-27 | 2022-06-08 | 富士電機株式会社 | Refrigerant circuit device |
| CN113865255A (en) * | 2021-09-30 | 2021-12-31 | 珠海格力电器股份有限公司 | Fan control method and device and refrigerator |
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