CN113566402B - Fan rotating speed adjusting method, air conditioner and readable storage medium - Google Patents
Fan rotating speed adjusting method, air conditioner and readable storage medium Download PDFInfo
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- CN113566402B CN113566402B CN202111020163.2A CN202111020163A CN113566402B CN 113566402 B CN113566402 B CN 113566402B CN 202111020163 A CN202111020163 A CN 202111020163A CN 113566402 B CN113566402 B CN 113566402B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The invention discloses a fan rotating speed adjusting method, an air conditioner and a readable storage medium, wherein the fan rotating speed adjusting method comprises the following steps: in a refrigeration mode, acquiring a temperature value of an outdoor heat exchanger of the air conditioner; when the temperature value of the outdoor heat exchanger exceeds a preset temperature range, acquiring the temperature change trend of the outdoor heat exchanger; and adjusting the rotating speed of an outdoor fan of the air conditioner according to the temperature change trend. When the temperature value of the outdoor heat exchanger exceeds the preset temperature range, the rotating speed of the outdoor fan is adjusted according to the temperature change trend, so that the accuracy of adjusting the rotating speed of the outdoor grade is improved, and the outdoor fan is prevented from being overshot.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a fan rotating speed adjusting method, an air conditioner and a readable storage medium.
Background
When the air conditioner operates in the cooling mode, the rotation speed of the outdoor fan is usually adjusted according to the temperature of the outdoor heat exchanger, so that the temperature of the outdoor heat exchanger is stabilized within a certain temperature range. However, when the rotation speed of the outdoor fan is adjusted according to the temperature of the outdoor heat exchanger, there may be a case where the rotation speed of the outdoor fan has reached a requirement due to a certain hysteresis in temperature detection, but the rotation speed of the outdoor fan is still adjusted, and the outdoor fan is overshot.
Disclosure of Invention
The invention mainly aims to provide a fan rotating speed adjusting method, an air conditioner and a readable storage medium, and aims to solve the problem of overshoot of an outdoor fan caused by temperature detection lag so as to improve the accuracy of rotating speed adjustment of the outdoor fan.
In order to achieve the above object, the present invention provides a method for adjusting a rotational speed of a fan, which is applied to an air conditioner, the method comprising the following steps:
in a refrigeration mode, acquiring a temperature value of an outdoor heat exchanger of the air conditioner;
when the temperature value of the outdoor heat exchanger exceeds a preset temperature range, acquiring the temperature change trend of the outdoor heat exchanger;
and adjusting the rotating speed of an outdoor fan of the air conditioner according to the temperature change trend.
Optionally, the step of obtaining the temperature value of the outdoor heat exchanger of the air conditioner includes:
acquiring a first temperature value in the middle of the outdoor heat exchanger, a second temperature value in a capillary tube of the outdoor heat exchanger and a third temperature value at an outlet of the outdoor heat exchanger;
and taking the maximum temperature value of the first temperature value, the second temperature value and the third temperature value as the temperature value of the outdoor heat exchanger.
Optionally, the step of adjusting the rotation speed of the outdoor fan of the air conditioner according to the temperature variation trend includes:
when the temperature value of the outdoor heat exchanger is larger than the upper limit value of the preset temperature range and the temperature change trend is an increasing trend, increasing the rotating speed of the outdoor fan;
and when the temperature value of the outdoor heat exchanger is smaller than the lower limit value of the preset temperature range and the temperature change trend is a reduction trend, reducing the rotating speed of the outdoor fan.
Optionally, the step of adjusting the rotation speed of the outdoor fan of the air conditioner according to the temperature variation trend includes:
when the temperature value of the outdoor heat exchanger is larger than the upper limit value of the preset temperature range and the temperature change trend is an increasing trend, increasing the rotating speed of the outdoor fan to a first rotating speed;
or, the first preset time is taken as an interval period, the first preset increasing value is taken as a step length, and the rotating speed of the outdoor fan is increased until the rotating speed of the outdoor fan reaches the highest rotating speed or the temperature change trend is a decreasing trend.
Optionally, the step of adjusting the rotation speed of the outdoor fan of the air conditioner according to the temperature variation trend includes:
when the temperature value of the outdoor heat exchanger is smaller than the lower limit value of the preset temperature range and the temperature change trend is a reduction trend, reducing the rotating speed of the outdoor fan to a second rotating speed;
or, the first preset time is taken as an interval period, the first preset reduction value is taken as a step length, and the rotating speed of the outdoor fan is reduced until the rotating speed of the outdoor fan reaches the lowest rotating speed or the temperature change trend is an increasing trend.
Optionally, after the step of obtaining the temperature value of the outdoor heat exchanger of the air conditioner, the method further comprises
When the temperature value of the outdoor heat exchanger exceeds a preset temperature range and the temperature value of the outdoor heat exchanger is smaller than a first temperature threshold value or the temperature value of the outdoor heat exchanger is larger than a second temperature threshold value, the step of acquiring the temperature change trend of the outdoor heat exchanger is executed;
when the temperature value of the outdoor heat exchanger exceeds a preset temperature range and the temperature value of the outdoor heat exchanger exceeds a first temperature threshold value, increasing the rotating speed of the outdoor fan;
when the temperature value of the outdoor heat exchanger exceeds a preset temperature range and the temperature value of the outdoor heat exchanger is lower than a second temperature threshold value, reducing the rotating speed of the outdoor fan;
the first temperature threshold is larger than the upper limit value of the preset temperature range, and the second temperature threshold is smaller than the lower limit value of the preset temperature range.
Optionally, the step of increasing the rotation speed of the outdoor fan includes:
increasing the rotation speed of the outdoor fan to a third rotation speed;
or, increasing the rotating speed of the outdoor fan by taking a second preset increasing value as a step length by taking a second preset time as an interval period until the rotating speed of the outdoor fan reaches the highest rotating speed or the temperature change trend of the outdoor heat exchanger is a decreasing trend;
the step of reducing the rotation speed of the outdoor fan includes:
and reducing the rotating speed of the outdoor fan to a fourth rotating speed, or reducing the rotating speed of the outdoor fan by taking a second preset reduction value as a step length by taking a second preset time as an interval period until the rotating speed of the outdoor fan reaches the lowest rotating speed or the temperature change trend of the outdoor heat exchanger is an increasing trend.
Optionally, after the step of obtaining the temperature value of the outdoor heat exchanger of the air conditioner, the method further includes:
if the temperature value of the outdoor heat exchanger is within a preset temperature range, controlling the outdoor fan to keep the current rotating speed to operate;
or if the temperature value of the outdoor heat exchanger is greater than the upper limit value of the preset temperature range and the temperature change trend is a decreasing trend, controlling the outdoor fan to keep the current rotating speed to operate;
or if the temperature value of the outdoor heat exchanger is smaller than the lower limit value of the preset temperature range and the temperature change trend is an increasing trend, controlling the outdoor fan to keep the current rotating speed to operate.
In addition, in order to achieve the above object, the present invention further provides an air conditioner, where the air conditioner includes a memory, a processor, and a fan speed adjustment program stored on and operable on the processor, and the processor implements the steps of the fan speed adjustment method when executing the fan speed adjustment program.
In addition, to achieve the above object, the present invention further provides a computer readable storage medium having a fan speed adjustment program stored thereon, the fan speed adjustment program, when executed by a processor, implementing the steps of the fan speed adjustment method as described above.
In the embodiment of the invention, the temperature value of the outdoor heat exchanger of the air conditioner is obtained when the air conditioner starts the refrigeration mode, and the temperature change trend of the outdoor heat exchanger is obtained when the temperature value of the outdoor heat exchanger exceeds the preset temperature range, so that the rotating speed of the outdoor fan of the air conditioner can be regulated according to the obtained temperature change trend when the temperature value of the outdoor heat exchanger exceeds the preset temperature range, and the condition that whether the rotating speed of the outdoor fan reaches the expected rotating speed requirement or not can not be effectively evaluated in time due to certain hysteresis of the detected temperature value is avoided. Thus, still adjusting the outdoor fan speed when the outdoor fan speed has reached the desired speed requirement may result in an overshoot of the outdoor fan. That is, the accuracy of the rotating speed regulation of the outdoor fan can be improved by estimating the temperature change trend of the outdoor heat exchanger in advance when the temperature value of the outdoor heat exchanger exceeds the preset temperature range.
Drawings
Fig. 1 is a schematic diagram of a hardware architecture of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a system architecture of an air conditioner according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart of a first embodiment of a fan speed adjustment method according to the present invention;
FIG. 4 is a schematic flow chart illustrating a method for adjusting a rotational speed of a fan according to a second embodiment of the present invention;
FIG. 5 is a schematic flow chart illustrating a method for adjusting a rotational speed of a fan according to a third embodiment of the present invention;
fig. 6 is a schematic flow chart of an application example of the method for adjusting the rotating speed of the fan 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.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 1 | |
5A | First |
| 2 | |
5B | Second |
| 3 | |
5C | Third temperature detecting device |
| 4 | Indoor heat exchanger |
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
The main solution of the invention is: in a refrigeration mode, acquiring a temperature value of an outdoor heat exchanger of the air conditioner; when the temperature value of the outdoor heat exchanger exceeds a preset temperature range, acquiring the temperature change trend of the outdoor heat exchanger; and adjusting the rotating speed of an outdoor fan of the air conditioner according to the temperature change trend.
When the air conditioner operates in the cooling mode, the rotation speed of the outdoor fan is usually adjusted according to the temperature of the outdoor heat exchanger, so that the temperature of the outdoor heat exchanger is stabilized within a certain temperature range. However, since there is some hysteresis in the temperature detection, when the rotation speed of the outdoor fan reaches the expected rotation speed, the rotation speed of the outdoor fan may be adjusted, and only the rotation speed of the outdoor fan overshoots. Therefore, the solution proposed by the invention aims to improve the accuracy of the rotation speed adjustment of the outdoor fan.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an air conditioner in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the air conditioner may include: a communication bus 1002, a processor 1001, such as a CPU, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the air conditioner configuration shown in fig. 1 is not intended to be limiting of the air conditioner and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
In the air conditioner shown in fig. 1, the network interface 1004 is mainly used for connecting to a backend server and performing data communication with the backend server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and processor 1001 may be configured to invoke a fan speed adjustment routine stored in memory 1005 and perform the steps associated with the various embodiments of the fan speed adjustment method described below.
Based on the hardware architecture of the air conditioner, various embodiments of the fan rotating speed adjusting method are provided. Alternatively, the system structure of the air conditioner according to each embodiment is as shown in fig. 2.
The air conditioner includes a compressor 1, an outdoor heat exchanger 2, a throttle valve 3, and an indoor heat exchanger 4. The refrigeration principle of the air conditioner is as follows: after being discharged from an exhaust port of the compressor 1, the high-temperature and high-pressure refrigerant flows to the outdoor heat exchanger 2, after condensing and heat exchanging in the outdoor heat exchanger 2, the refrigerant flows into the indoor heat exchanger 4 through the throttle valve 3, and after evaporating and heat exchanging in the indoor heat exchanger 4, the refrigerant flows back to the compressor 1.
Optionally, in order to ensure the heat exchange effect, the outdoor heat exchanger 2 is provided with multiple heat exchange pipelines, and each heat exchange pipeline is provided with a capillary tube for throttling. In addition, in order to ensure the accuracy of the acquired temperature value of the outdoor heat exchanger 2, a first temperature detection device 5A is arranged in the middle of the outdoor heat exchanger 2 and is used for acquiring a first temperature value in the middle of the outdoor heat exchanger 2; a second temperature detection device 5B is arranged at the capillary tube of the outdoor heat exchanger 2 and is used for acquiring a second temperature value in the capillary tube of the outdoor heat exchanger 2; and a third temperature detection device 5C is arranged at the outlet of the outdoor heat exchanger 2 and is used for acquiring a third temperature value of the outlet of the outdoor heat exchanger 2. Therefore, the temperature value of the outdoor heat exchanger 2 can be evaluated according to the first temperature value in the middle of the outdoor heat exchanger 2, the second temperature value in the capillary tube of the outdoor heat exchanger 2 and the third temperature value at the outlet of the outdoor heat exchanger 2. For example, the maximum temperature value among the first temperature value, the second temperature value, and the third temperature value may be used as the temperature value of the outdoor heat exchanger 2; or taking the average value of the first temperature value, the second temperature value and the third temperature value as the temperature value of the outdoor heat exchanger 2; or taking a weighted average of the first temperature value, the second temperature value, and the third temperature value as the temperature value of the outdoor heat exchanger 2, and the weight corresponding to each temperature value is determined according to the installation position of the temperature detection device for detecting each temperature value, and is not limited specifically here.
It should be noted that, when the rotation speed of the outdoor fan is adjusted according to the temperature of the outdoor heat exchanger 2, because there is a certain hysteresis in the temperature detection, there may be a situation that the rotation speed of the outdoor fan has already reached the requirement, but the rotation speed of the outdoor fan is still adjusted to cause the outdoor fan to overshoot, which is not beneficial to improving the accuracy of the rotation speed adjustment of the outdoor fan. To above-mentioned problem, this application is when opening the refrigeration mode and the temperature value of outdoor heat exchanger 2 surpasss and predetermine the temperature range, adjusts the rotational speed of outdoor fan according to the temperature variation trend of outdoor heat exchanger 2, so, can evaluate whether the rotational speed regulation of outdoor fan has reached anticipated demand according to the temperature variation trend for can adjust the rotational speed of outdoor fan when the rotational speed of outdoor fan reaches anticipated demand, with the accuracy of the rotational speed regulation of improvement outdoor fan.
Referring to fig. 3, fig. 3 is a flowchart of a fan speed adjusting method according to a first embodiment of the present invention, and in this embodiment, the fan speed adjusting method includes the following steps:
step S10: in a refrigeration mode, acquiring a temperature value of an outdoor heat exchanger of the air conditioner;
step S20: when the temperature value of the outdoor heat exchanger exceeds a preset temperature range, acquiring the temperature change trend of the outdoor heat exchanger;
step S30: and adjusting the rotating speed of an outdoor fan of the air conditioner according to the temperature change trend.
When the air conditioner operates in the cooling mode, the rotating speed of the outdoor fan is usually controlled according to the temperature value of the outdoor heat exchanger 2, so that the temperature value of the outdoor heat exchanger 2 is stabilized within a certain temperature range. Therefore, when the temperature of the outdoor heat exchanger 2 is too high, the rotating speed of the outdoor fan can be increased to assist the outdoor heat exchanger 2 in radiating, so that the temperature of the outdoor heat exchanger 2 falls back to a preset temperature interval and stably operates; when the temperature of the outdoor heat exchanger 2 is low, the rotating speed of the outdoor fan can be reduced to slow down the heat dissipation of the outdoor heat exchanger 2, so that the temperature of the outdoor heat exchanger 2 is raised back to the preset temperature range and the operation is stable. However, when the temperature value of the outdoor heat exchanger 2 exceeds the preset temperature range, after the rotation speed of the outdoor fan is adjusted, the temperature value of the outdoor heat exchanger 2 may have been significantly increased or decreased, and at this time, if the rotation speed of the outdoor fan is continuously adjusted, the rotation speed of the outdoor fan may be adjusted too much, which is not only disadvantageous to saving the electricity consumption cost, but also affects the comfort during cooling.
Therefore, after the temperature value of the outdoor heat exchanger 2 exceeds the preset temperature range, the rotating speed of the outdoor fan can be adjusted according to the temperature change trend of the outdoor heat exchanger 2, so that when the temperature value of the outdoor heat exchanger 2 has an obvious back-up or back-down trend, the outdoor fan can keep the current rotating speed to operate without continuously increasing or reducing the rotating speed of the indoor fan, and the rotating speed of the outdoor fan is prevented from being excessively increased or excessively reduced. Before the rotating speed of the outdoor fan is adjusted according to the temperature change trend of the outdoor heat exchanger 2, whether the temperature value of the outdoor heat exchanger 2 exceeds a preset temperature range needs to be determined, so that whether the requirement for adjusting the rotating speed of the outdoor fan exists is preliminarily determined. The method specifically comprises the following steps: when the air conditioner starts a refrigeration mode, the temperature value of the outdoor heat exchanger 2 of the air conditioner is firstly obtained to determine whether the temperature value of the outdoor heat exchanger 2 exceeds a preset temperature range.
Alternatively, the accuracy of the temperature value of the outdoor heat exchanger 2 is to be further improved due to the influence of the installation position of the temperature detection means and the hysteresis of the temperature value detected by the temperature detection means. In this way, in order to improve the accuracy of the acquired temperature value of the outdoor heat exchanger 2, the manner of acquiring the temperature value of the outdoor heat exchanger 2 may be: and obtaining the temperature value (first temperature value) of the middle part of the outdoor heat exchanger 2, the temperature value (second temperature value) in the capillary tube of the outdoor heat exchanger 2 and the temperature value (third temperature value) of the outlet of the outdoor heat exchanger 2. For example, an average value of the first temperature value, the second temperature value, and the third temperature value may be used as the temperature value of the outdoor heat exchanger 2, or a weighted average value of the first temperature value, the second temperature value, and the third temperature value may be used as the temperature value of the outdoor heat exchanger 2. Since, in a normal situation, after the temperature value of the outdoor heat exchanger 2 exceeds a certain temperature range, the higher the temperature value of the outdoor heat exchanger 2 is, the larger the rotation speed of the corresponding outdoor fan is, in an embodiment, in order to prevent the rotation speed of the outdoor fan from overshooting, the maximum temperature value among the first temperature value, the second temperature value, and the third temperature value may be preferably used as the temperature value of the outdoor heat exchanger 2; or, the minimum temperature value of the first temperature value, the second temperature value and the third temperature value can be used as the temperature value of the outdoor heat exchanger 2 to detect whether the temperature value of the outdoor heat exchanger 2 exceeds the upper limit value of the preset temperature range; and the maximum temperature value of the first temperature value, the second temperature value and the third temperature value is used as the temperature value of the outdoor heat exchanger 2 to detect whether the temperature value of the outdoor heat exchanger 2 is lower than the lower limit value of the preset temperature range, so as to further improve the accuracy of judging whether the temperature value of the outdoor heat exchanger 2 exceeds the preset temperature range.
It should be noted that, in order to ensure the heat exchange effect, the outdoor heat exchanger 2 is provided with multiple heat exchange pipelines, each heat exchange pipeline is provided with a capillary tube for shunting, and the capillary tube is provided with a second temperature detection device 5B for detecting a second temperature value in the capillary tube of the outdoor heat exchanger 2; the first temperature value of the middle part of the outdoor heat exchanger 2 can be detected by a first temperature detection device 5A arranged at the middle part of the outdoor heat exchanger 2; the third temperature value at the outlet of the outdoor heat exchanger 2 can be detected by the third temperature detecting device 5C disposed at the outlet of the outdoor heat exchanger 2.
Thus, when it is determined that the temperature value of the outdoor heat exchanger 2 exceeds the preset temperature range, it indicates that the rotation speed of the outdoor fan may need to be adjusted to enable the temperature value of the outdoor heat exchanger 2 to stably rise or fall back to the preset temperature range, but if the temperature value of the outdoor heat exchanger 2 has an obvious rising trend, the rotation speed of the outdoor fan is continuously reduced, the temperature value of the outdoor heat exchanger 2 is continuously increased, even exceeds the upper limit value of the outdoor heat exchanger 2, and overshoot is caused; similarly, if the temperature value of the outdoor heat exchanger 2 has a significant drop-back tendency, but the rotation speed of the outdoor fan is still increased, the temperature value of the outdoor heat exchanger 2 is continuously decreased and even is smaller than the lower limit value of the outdoor heat exchanger 2, which causes overshoot. Therefore, when the temperature value of the outdoor heat exchanger 2 exceeds the preset temperature range, the temperature variation trend of the outdoor heat exchanger 2 needs to be acquired, so as to further determine whether the rotating speed of the outdoor fan needs to be adjusted according to the temperature variation trend, and improve the accuracy of the rotating speed adjustment of the outdoor fan.
Optionally, the temperature variation trend of the outdoor heat exchanger 2 may be represented by a difference between a current temperature value of the outdoor heat exchanger 2 and a last acquired temperature value, or may be represented by a ratio between a first difference and a second difference after acquiring a first difference between the current temperature value of the outdoor heat exchanger 2 and the last acquired temperature value, and the second difference between the last acquired temperature value and the last acquired temperature value, and the like, which is not specifically limited herein.
In general, since the rotation speed of the outdoor fan needs to be increased when the temperature value of the outdoor heat exchanger 2 is high, and the rotation speed of the outdoor fan needs to be decreased when the temperature value of the outdoor heat exchanger 2 is low, in an embodiment, before the rotation speed of the outdoor fan is adjusted according to the temperature variation trend, it is to be distinguished whether the temperature value of the outdoor heat exchanger 2 is in a range larger than the upper limit value of the preset temperature range or in a range smaller than the lower limit value of the preset temperature range. Furthermore, when the temperature value of the outdoor heat exchanger 2 is greater than the upper limit value of the preset temperature range and the temperature variation trend is an increasing trend, it is indicated that the high pressure of the system is higher than a reasonable value and has a trend of continuously increasing, at this time, the rotating speed regulation condition of the outdoor fan is considered to be met, and the rotating speed of the outdoor fan needs to be increased so as to reduce the temperature value of the outdoor heat exchanger 2 and ensure the refrigeration effect; when the temperature value of the outdoor heat exchanger 2 is smaller than the lower limit value of the preset temperature range and the temperature change trend is a decreasing trend, it is indicated that the high-pressure of the system is lower than a reasonable value and has a trend of continuously decreasing, at this moment, the rotating speed regulation condition of the outdoor fan is considered to be met, and the rotating speed of the outdoor fan needs to be decreased, so that the temperature value of the outdoor heat exchanger 2 is increased, and the refrigeration effect is ensured.
In order to improve the rationality of the adjustment of the rotating speed of the outdoor fan, the outdoor heat exchanger 2 can correspond to different adjustment modes when the temperature values are different and the temperature change trends are different, for example, the rotating speed of the outdoor fan can be directly increased to the rotating speed of a target gear; or the rotating speed of the outdoor fan is adjusted at certain intervals and step lengths until the temperature value and/or the temperature change trend of the outdoor heat exchanger 2 do not meet the rotating speed adjusting condition of the outdoor fan; or, the rotating speed of the outdoor fan is adjusted in a stepwise increasing mode until the temperature value and/or the temperature variation trend of the outdoor heat exchanger 2 do not meet the rotating speed adjusting condition of the outdoor fan, and the like.
Optionally, when the temperature value of the outdoor heat exchanger 2 exceeds the upper limit value of the preset temperature range and the temperature variation trend of the outdoor heat exchanger 2 is an increasing trend, the rotation speed of the outdoor fan may be increased to a certain fixed rotation speed (first rotation speed), for example, the gear of the outdoor fan is increased by N, N is greater than or equal to 1, and the gear of the outdoor fan after N is increased is less than or equal to the highest gear of the indoor fan, so as to improve the timeliness of rotation speed adjustment of the outdoor fan; or the rotation speed of the outdoor fan can be increased by taking the first preset increasing value as the increasing step length for increasing the time interval and taking the first preset increasing value as the increasing step length, and when the rotation speed of the outdoor fan reaches the highest rotation speed or the temperature change trend of the outdoor fan is the decreasing trend, the rotation speed of the outdoor fan is not increased any more, so that the flexibility of rotation speed adjustment is stronger, the increase of the rotation speed can be stopped in time, the overshoot of the outdoor fan is avoided, and the power consumption cost is not facilitated to be saved.
Alternatively, when the temperature value of the outdoor heat exchanger 2 is lower than the lower limit value of the preset temperature range and the trend of the temperature change is a decreasing trend, the following may be performed: reducing the rotating speed of the outdoor fan to a second rotating speed, for example, reducing the gear of the outdoor fan by N, wherein N is greater than or equal to 1, and the gear of the outdoor fan after reducing N is less than or equal to the lowest adjustable gear of the indoor fan, so as to improve the timeliness of the rotating speed adjustment of the outdoor fan; the method can also be as follows: and reducing the rotating speed of the outdoor fan by taking the first preset time as a reduction time interval and taking the first preset reduction value as a reduction step length, and when the rotating speed of the outdoor fan reaches the lowest rotating speed and/or the temperature change trend is an increase trend, not reducing the rotating speed of the outdoor fan any more. Therefore, the flexibility of the rotation speed adjustment of the outdoor fan can be improved, and the electricity cost is saved on the basis of preventing the outdoor fan from being over-adjusted.
Optionally, the first preset time, the first preset added value, and the first preset decreased value may be default settings of the system or may be flexibly set according to actual requirements, and are not specifically limited herein.
This embodiment is through when the air conditioner starts the refrigeration mode and the temperature value of outdoor heat exchanger 2 surpasss preset temperature range, adjusts the rotational speed of the outdoor fan of air conditioner according to the temperature variation trend of outdoor heat exchanger 2, avoids directly adjusting the rotational speed of outdoor fan when the temperature value of outdoor heat exchanger 2 surpasss preset temperature range to make the outdoor fan appear excessively adjusting easily. That is, when the temperature value of the outdoor heat exchanger 2 exceeds the preset temperature range, the rotating speed of the outdoor fan of the air conditioner is adjusted according to the temperature variation trend of the outdoor heat exchanger 2, and the accuracy of rotating speed adjustment of the outdoor fan can be improved.
Based on the above embodiment, a second embodiment of the method for adjusting the rotational speed of the fan according to the present invention is provided. Referring to fig. 4, in this embodiment, the method for adjusting the rotational speed of the fan includes the following steps:
step S10: in a refrigeration mode, acquiring a temperature value of an outdoor heat exchanger of the air conditioner;
step S11: when the temperature value of the outdoor heat exchanger exceeds a preset temperature range and the temperature value of the outdoor heat exchanger is smaller than a first temperature threshold value or the temperature value of the outdoor heat exchanger is larger than a second temperature threshold value, acquiring the temperature change trend of the outdoor heat exchanger;
step S12: adjusting the rotating speed of an outdoor fan of the air conditioner according to the temperature change trend;
step S13: when the temperature value of the outdoor heat exchanger exceeds a preset temperature range and the temperature value of the outdoor heat exchanger exceeds a first temperature threshold value, increasing the rotating speed of the outdoor fan;
step S14: and when the temperature value of the outdoor heat exchanger exceeds a preset temperature range and is lower than a second temperature threshold value, reducing the rotating speed of the outdoor fan.
In order to take account of the accuracy and timeliness of the rotation speed adjustment of the outdoor fan, in this embodiment, after the air conditioner starts the refrigeration mode, the rotation speed of the outdoor fan can be adjusted by adopting different adjustment modes according to different temperature ranges where the temperature values of the outdoor heat exchanger 2 are located.
Specifically, the first temperature threshold and the second temperature threshold may be added on the basis of the preset temperature range, so that when the temperature value of the outdoor heat exchanger 2 exceeds the preset temperature range, it may be determined whether the rotation speed of the outdoor fan needs to be further adjusted according to the temperature change trend of the outdoor heat exchanger 2 by combining the magnitude relationship between the temperature value of the outdoor heat exchanger 2 and the first temperature threshold and the second temperature threshold, and when the rotation speed of the outdoor fan does not need to be adjusted according to the temperature change trend of the outdoor heat exchanger 2, the rotation speed of the outdoor fan is adjusted by using different adjustment modes by combining the magnitude relationship between the temperature value of the outdoor heat exchanger 2 and the first temperature threshold and the second temperature threshold. For example, when the temperature value of the outdoor heat exchanger 2 exceeds the preset temperature range, it may be determined how to adjust the outdoor fan speed according to a first difference between the first temperature threshold and the temperature value of the outdoor heat exchanger 2, and a second difference between the temperature value of the outdoor heat exchanger 2 and the second temperature threshold, or further determined how to adjust the outdoor fan speed according to a temperature variation trend of the outdoor heat exchanger 2. The first temperature threshold is greater than the upper limit value of the preset temperature range, and the second temperature threshold is less than the lower limit value of the preset temperature range, so that the temperature control method can be flexibly set according to actual requirements, and is not specifically limited here.
In this embodiment, after comparing the temperature value of the outdoor heat exchanger 2 with the first temperature threshold and the second temperature threshold, the condition that the rotating speed of the outdoor fan needs to be adjusted can be specifically divided into the following four conditions:
in the first situation, when the temperature value of the outdoor heat exchanger 2 exceeds the preset temperature range and the temperature value of the outdoor heat exchanger 2 is lower than the first temperature threshold, it is indicated that the temperature value of the outdoor heat exchanger 2 exceeds the preset temperature range but does not exceed the preset temperature range much, and at this time, if the rotating speed of the outdoor fan is directly increased when the temperature value of the outdoor heat exchanger 2 is in a fall-back state, the outdoor fan is easily overshot, so that whether the rotating speed of the outdoor fan needs to be adjusted or not needs to be determined by combining with the temperature change trend of the outdoor heat exchanger 2. And if the temperature change trend of the outdoor heat exchanger 2 is an increasing trend, the rotating speed of the outdoor fan is increased. For example, the rotation speed of the outdoor fan is increased to a first rotation speed; or, the first preset time is taken as an interval period, the first preset increasing value is taken as a step length, and the rotating speed of the outdoor fan is increased until the rotating speed of the outdoor fan reaches the highest rotating speed or the temperature change trend is a decreasing trend.
And in the second situation, when the temperature value of the outdoor heat exchanger 2 exceeds the preset temperature range and the temperature value of the outdoor heat exchanger 2 exceeds the second temperature threshold, it is indicated that the temperature value of the outdoor heat exchanger 2 exceeds the preset temperature range but is still close to the preset temperature range, and at this moment, if the rotation speed of the outdoor fan is directly reduced when the temperature value of the outdoor heat exchanger 2 is in a rising state, the outdoor fan is easy to overshoot, so that whether the rotation speed of the outdoor fan needs to be adjusted or not needs to be determined by combining the temperature change trend of the outdoor heat exchanger 2. At this time, if the temperature variation trend of the outdoor heat exchanger 2 is a decreasing trend, the rotation speed of the outdoor fan is decreased. For example, the rotation speed of the outdoor fan is reduced to a second rotation speed; or, the first preset time is taken as an interval period, the first preset reduction value is taken as a step length, the rotating speed of the outdoor fan is reduced until the rotating speed of the outdoor fan reaches the lowest rotating speed or the temperature change trend is an increasing trend.
And in a third situation, when the temperature value of the outdoor heat exchanger 2 exceeds the preset temperature range and the temperature value of the outdoor heat exchanger 2 is greater than the first temperature threshold value, the system pressure is seriously higher, and at the moment, no matter how the temperature change trend of the outdoor heat exchanger 2 is, the rotating speed of the outdoor fan needs to be increased to reduce the temperature value of the outdoor heat exchanger 2. Optionally, when the rotation speed of the outdoor fan is increased, the following may be specifically performed: increasing the rotating speed of the outdoor fan to a third rotating speed, and reducing the temperature value of the outdoor heat exchanger 2 in time; or the rotating speed of the outdoor fan is increased by taking the second preset time as an increasing time interval and taking the second preset increasing value as an increasing step length, and when the rotating speed of the outdoor fan reaches the highest rotating speed or the temperature change trend of the outdoor heat exchanger 2 shows a decreasing trend, the rotating speed is not increased any more, so that the rotating speed of the outdoor fan is flexibly adjusted, overshoot is avoided, and the electricity consumption cost can be saved. Optionally, the third rotational speed is greater than the first rotational speed; the second preset time is longer than the first preset time, and the second preset increment is longer than the first preset increment so as to improve the timeliness of the rotating speed regulation of the outdoor fan.
And fourthly, when the temperature value of the outdoor heat exchanger 2 exceeds the preset temperature range and the temperature value of the outdoor heat exchanger 2 is smaller than the second temperature threshold value, the system pressure is seriously low, and at the moment, the rotating speed of the outdoor fan needs to be reduced no matter the temperature change trend of the outdoor heat exchanger 2, so that the temperature value of the outdoor heat exchanger 2 is increased. Optionally, when the rotation speed of the outdoor fan is reduced, the following may be specifically performed: reducing the rotating speed of the outdoor fan by a fourth rotating speed to improve the timeliness of temperature rise of the outdoor heat exchanger 2; or, the rotation speed of the outdoor fan is reduced by taking the second preset time as a reduction time interval and taking the second preset reduction value as a reduction step length, and when the rotation speed of the outdoor fan reaches the lowest rotation speed or the temperature change trend of the outdoor heat exchanger 2 is an increase trend, the rotation speed is not reduced any more, so that the overshoot of the outdoor fan can be avoided, and the power consumption cost can be saved. Optionally, the fourth rotational speed is greater than the second rotational speed; the second preset time is longer than the first preset time; the second preset reduction value is greater than the first preset reduction value.
In this embodiment, when the temperature value of the outdoor heat exchanger 2 exceeds the preset temperature range, the adjustment mode of the outdoor fan is determined according to the magnitude relationship between the temperature value of the outdoor heat exchanger 2 and the first temperature threshold and the second temperature threshold, which not only can prevent the rotational speed of the outdoor fan from being directly increased or decreased to cause the overshoot of the outdoor fan when the temperature value of the outdoor heat exchanger 2 exceeds the preset temperature range and is smaller than the first temperature threshold or is larger than the second temperature threshold, but also can prevent the rotational speed of the outdoor fan from being further determined to cause the untimely adjustment of the rotational speed of the outdoor fan according to the temperature change trend when the temperature value of the outdoor heat exchanger 2 exceeds the first temperature threshold or is smaller than the second temperature threshold. Therefore, the timeliness of the rotating speed adjustment of the outdoor fan can be improved, and the accuracy of the rotating speed adjustment of the outdoor fan can also be improved.
Based on the above embodiments, a third embodiment of the method for adjusting the rotational speed of a fan according to the present invention is provided. Referring to fig. 5, in this embodiment, the method for adjusting the rotational speed of the fan includes the following steps:
step S10: in a refrigeration mode, acquiring a temperature value of an outdoor heat exchanger of the air conditioner;
step S21: if the temperature value of the outdoor heat exchanger is within a preset temperature range, controlling the outdoor fan to keep the current rotating speed to operate;
step S22: if the temperature value of the outdoor heat exchanger is greater than the upper limit value of the preset temperature range and the temperature change trend is a decreasing trend, controlling the outdoor fan to keep the current rotating speed to operate;
step S23: and if the temperature value of the outdoor heat exchanger is smaller than the lower limit value of the preset temperature range and the temperature change trend is an increasing trend, controlling the outdoor fan to keep the current rotating speed to operate.
In general, after the temperature value of the outdoor heat exchanger 2 falls back or rises back to the preset temperature range, the outdoor fan is controlled to keep the current rotating speed to operate, and when the temperature value of the outdoor heat exchanger 2 exceeds the upper limit value of the preset temperature range, the rotating speed of the outdoor fan is increased; and when the temperature value of the outdoor heat exchanger 2 is lower than the lower limit value of the preset temperature range, reducing the rotating speed of the outdoor fan. Therefore, when the temperature value of the outdoor heat exchanger 2 exceeds the upper limit value of the preset temperature range and the temperature change trend thereof shows a descending trend, if the rotating speed of the outdoor fan is still increased, the temperature value of the outdoor heat exchanger 2 may quickly fall back to the preset temperature range or even lower than the lower limit value of the preset temperature range, and at this moment, because the detection of the temperature value of the outdoor heat exchanger 2 has a certain hysteresis, the rotating speed of the outdoor fan cannot be reasonably adjusted in time, and the outdoor fan is likely to overshoot; similarly, when the temperature value of the outdoor heat exchanger 2 is lower than the lower limit value of the preset temperature range and the temperature variation trend thereof shows an increasing trend, if the rotation speed of the outdoor fan is still reduced, the temperature value may be quickly increased back to the preset temperature range, even exceed the upper limit value of the preset temperature range, and the detection of the temperature value of the outdoor heat exchanger 2 has a certain hysteresis, so that the outdoor fan may be overshot.
Therefore, in order to prevent the outdoor fan from being overshot, in the embodiment, the outdoor fan is kept to operate at the current rotating speed not only when the temperature value of the outdoor heat exchanger 2 is within the preset temperature range; and when the temperature value of the outdoor heat exchanger 2 is higher than the upper limit value of the preset temperature range and the temperature variation trend is a decreasing trend, and the temperature value of the outdoor heat exchanger 2 is lower than the lower limit value of the preset temperature range and the temperature variation trend is an increasing trend, the outdoor fan is also kept to operate at the current rotating speed.
In the embodiment, when the temperature value of the outdoor heat exchanger 2 is higher than the upper limit value of the preset temperature range and the temperature variation trend is a decreasing trend, and the temperature value of the outdoor heat exchanger 2 is lower than the lower limit value of the preset temperature range and the temperature variation trend is an increasing trend, the rotating speed of the outdoor fan is kept unchanged, and the outdoor fan can be prevented from being overshot, so that the accuracy of rotating speed adjustment of the outdoor fan is improved.
Based on the above embodiments, a specific application example of the method for adjusting the rotational speed of the fan of the present invention is provided, and fig. 6 is referred to.
As shown in fig. 6, in this embodiment, when the air conditioner is turned on and operates in the cooling mode, the initial rotation speed of the outdoor fan may be selected according to the outdoor environment temperature. And after the outdoor fan runs for a period of time at the initial rotating speed, starting to enter the regulation control of the outdoor fan. At this time, the relationship between the maximum temperature value Max (Ta, Tb, Tc) among the first temperature value Ta in the middle of the outdoor heat exchanger 2, the second temperature value Tb in the capillary tube of the outdoor heat exchanger 2, and the third temperature value Tc at the outlet of the outdoor heat exchanger 2, and the upper limit value To and the lower limit value Td of the preset temperature range may be determined. If Td is less than Max (Ta, Tb, Tc) and less than To, the rotating speed of the fan is kept unchanged; if Max (Ta, Tb, Tc) is more than or equal To or Max (Ta, Tb, Tc) is less than or equal To Td, whether Delta Max (Ta, Tb, Tc) is more than zero, whether Max (Ta, Tb, Tc) is more than the first temperature threshold Tso and whether Max (Ta, Tb, Tc) is less than the second temperature threshold Tsd are further judged. Wherein, if Δ Max (Ta, Tb, Tc) is greater than or equal to 0, it indicates that the temperature variation trend of the outdoor heat exchanger 2 is an ascending trend; if the delta Max (Ta, Tb, Tc) < 0, the temperature change trend of the outdoor heat exchanger 2 is a descending trend; Δ Max (Ta, Tb, Tc) is the difference between the current Δ Max (Ta, Tb, Tc) and the Δ Max (Ta, Tb, Tc) obtained last time; tso > To, Tsd < Td.
Specifically, after determining whether Max (Ta, Tb, Tc) exceeds the preset temperature range, whether Δ Max (Ta, Tb, Tc) is greater than zero, and whether Max (Ta, Tb, Tc) is greater than the first temperature threshold Tso and Max (Ta, Tb, Tc) is less than the second temperature threshold Tsd, the following cases may be specifically classified:
(1) when Max (Ta, Tb, Tc) > Tso represents that the high pressure of the system is higher at the moment, and the rotating speed of the current fan needs to be increased;
(2) when To is less than or equal To Max (Ta, Tb and Tc) and less than or equal To Tso and delta Max (Ta, Tb and Tc) is more than or equal To 0, the high pressure of the system is higher than a reasonable value and tends To continuously rise at the moment, and the rotating speed of the current fan needs To be increased;
(3) when To is less than or equal To Max (Ta, Tb and Tc) and less than Tso and delta Max (Ta, Tb and Tc) is less than 0, the high pressure of the system is higher than a reasonable value at the moment and the trend of continuous descending exists, and the rotating speed of the fan is kept unchanged;
(4) when Td is less than Max (Ta, Tb, Tc) and less than To, the high pressure of the system is in a reasonable value at the moment, and the rotating speed of the fan is kept unchanged;
(5) when Tsd is less than or equal to Max (Ta, Tb and Tc) and Td Max (Ta, Tb and Tc) is greater than 0, the high-pressure of the system is lower than a reasonable value at the moment and the trend of continuously rising exists, and the rotating speed of the fan is kept unchanged;
(6) when Tsd is less than or equal to Max (Ta, Tb and Tc) and Td Max (Ta, Tb and Tc) is less than or equal to 0, the high-pressure of the system is lower than a reasonable value and has a trend of continuously descending, and the rotating speed of the current fan needs to be reduced;
(7) when Max (Ta, Tb, Tc) < Tsd, the high pressure of the system is low at the moment, and the current fan rotating speed needs to be reduced.
After the above actions are executed, the regulation control for re-entering the outdoor fan is returned after a fixed time Tt to judge Max (Ta, Tb and Tc) until a fan stop instruction is received.
In addition, an embodiment of the present invention further provides a control device of an air conditioner, where the control device of an air conditioner includes a memory, a processor, and a fan rotation speed adjustment program stored on and operable on the processor, and the steps of the fan rotation speed adjustment method are implemented when the processor executes the fan rotation speed adjustment program.
In addition, the embodiment of the present invention further provides an air conditioner, where the air conditioner includes a memory, a processor, and a fan speed adjustment program that is stored on the processor and is executable on the processor, and the processor implements the steps of the fan speed adjustment method when executing the fan speed adjustment program; or the air conditioner includes the control device of the air lifter as described above.
In addition, an embodiment of the present invention further provides a computer-readable storage medium, where a fan rotation speed adjustment program is stored on the computer-readable storage medium, and when being executed by a processor, the fan rotation speed adjustment program implements the steps of the fan rotation speed adjustment method described above.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, a television, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields are also included in the scope of the present invention.
Claims (9)
1. A fan rotating speed adjusting method is characterized by being applied to an air conditioner, and the fan rotating speed adjusting method comprises the following steps:
in a refrigeration mode, acquiring a temperature value of an outdoor heat exchanger of the air conditioner;
when the temperature value of the outdoor heat exchanger exceeds a preset temperature range, acquiring the temperature change trend of the outdoor heat exchanger;
adjusting the rotating speed of an outdoor fan of the air conditioner according to the temperature change trend;
after the step of obtaining the temperature value of the outdoor heat exchanger of the air conditioner, the method further comprises:
when the temperature value of the outdoor heat exchanger exceeds a preset temperature range and the temperature value of the outdoor heat exchanger is smaller than a first temperature threshold value or the temperature value of the outdoor heat exchanger is larger than a second temperature threshold value, the step of acquiring the temperature change trend of the outdoor heat exchanger is executed;
when the temperature value of the outdoor heat exchanger exceeds a preset temperature range and the temperature value of the outdoor heat exchanger exceeds a first temperature threshold value, increasing the rotating speed of the outdoor fan;
when the temperature value of the outdoor heat exchanger exceeds a preset temperature range and the temperature value of the outdoor heat exchanger is lower than a second temperature threshold value, reducing the rotating speed of the outdoor fan;
the first temperature threshold is larger than the upper limit value of the preset temperature range, and the second temperature threshold is smaller than the lower limit value of the preset temperature range;
after the step of acquiring the temperature variation trend of the outdoor heat exchanger is executed, the method further comprises the following steps;
if the temperature value of the outdoor heat exchanger is greater than the upper limit value of the preset temperature range and the temperature change trend is a decreasing trend, controlling the outdoor fan to keep the current rotating speed to operate;
or if the temperature value of the outdoor heat exchanger is smaller than the lower limit value of the preset temperature range and the temperature change trend is an increasing trend, controlling the outdoor fan to keep the current rotating speed to operate.
2. The fan speed adjustment method according to claim 1, wherein the step of obtaining the temperature value of the outdoor heat exchanger of the air conditioner comprises:
acquiring a first temperature value in the middle of the outdoor heat exchanger, a second temperature value in a capillary tube of the outdoor heat exchanger and a third temperature value at an outlet of the outdoor heat exchanger;
and taking the maximum temperature value of the first temperature value, the second temperature value and the third temperature value as the temperature value of the outdoor heat exchanger.
3. The fan speed adjusting method according to claim 1, wherein the step of adjusting the speed of the outdoor fan of the air conditioner according to the temperature variation tendency comprises:
when the temperature value of the outdoor heat exchanger is larger than the upper limit value of the preset temperature range and the temperature change trend is an increasing trend, increasing the rotating speed of the outdoor fan;
and when the temperature value of the outdoor heat exchanger is smaller than the lower limit value of the preset temperature range and the temperature change trend is a reduction trend, reducing the rotating speed of the outdoor fan.
4. The fan speed adjusting method according to claim 1, wherein the step of adjusting the speed of the outdoor fan of the air conditioner according to the temperature variation tendency comprises:
when the temperature value of the outdoor heat exchanger is larger than the upper limit value of the preset temperature range and the temperature change trend is an increasing trend, increasing the rotating speed of the outdoor fan to a first rotating speed;
or, the first preset time is taken as an interval period, the first preset increasing value is taken as a step length, and the rotating speed of the outdoor fan is increased until the rotating speed of the outdoor fan reaches the highest rotating speed or the temperature change trend is a decreasing trend.
5. The fan speed adjusting method according to claim 1, wherein the step of adjusting the speed of the outdoor fan of the air conditioner according to the temperature variation tendency comprises:
when the temperature value of the outdoor heat exchanger is smaller than the lower limit value of the preset temperature range and the temperature change trend is a reduction trend, reducing the rotating speed of the outdoor fan to a second rotating speed;
or, the first preset time is taken as an interval period, the first preset reduction value is taken as a step length, and the rotating speed of the outdoor fan is reduced until the rotating speed of the outdoor fan reaches the lowest rotating speed or the temperature change trend is an increasing trend.
6. The fan speed adjustment method of claim 5, wherein the step of increasing the speed of the outdoor fan comprises:
increasing the rotation speed of the outdoor fan to a third rotation speed;
or, increasing the rotating speed of the outdoor fan by taking a second preset increasing value as a step length by taking a second preset time as an interval period until the rotating speed of the outdoor fan reaches the highest rotating speed or the temperature change trend of the outdoor heat exchanger is a decreasing trend;
the step of reducing the rotation speed of the outdoor fan includes:
and reducing the rotating speed of the outdoor fan to a fourth rotating speed, or reducing the rotating speed of the outdoor fan by taking a second preset reduction value as a step length by taking a second preset time as an interval period until the rotating speed of the outdoor fan reaches the lowest rotating speed or the temperature change trend of the outdoor heat exchanger is an increasing trend.
7. The fan speed adjustment method of claim 1, wherein after the step of obtaining the temperature value of the outdoor heat exchanger of the air conditioner, the method further comprises:
and if the temperature value of the outdoor heat exchanger is within a preset temperature range, controlling the outdoor fan to keep the current rotating speed to operate.
8. An air conditioner, characterized in that the air conditioner comprises a memory, a processor and a fan speed adjusting program stored on the memory and operable on the processor, and the processor implements the steps of the fan speed adjusting method according to any one of claims 1 to 7 when executing the fan speed adjusting program.
9. A readable storage medium having stored thereon a fan speed adjustment program which, when executed by a processor, performs the steps of the fan speed adjustment method of any one of claims 1-7.
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| CN103185387A (en) * | 2013-03-28 | 2013-07-03 | 广东美的电器股份有限公司 | Air-conditioner and outlet air temperature controlling method thereof |
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| JPH09250798A (en) * | 1996-03-14 | 1997-09-22 | Sharp Corp | Air conditioner |
| JP2006118733A (en) * | 2004-10-19 | 2006-05-11 | Matsushita Electric Ind Co Ltd | Air conditioner |
| JP4888338B2 (en) * | 2007-10-31 | 2012-02-29 | ダイキン工業株式会社 | Air conditioner |
| CN104913447A (en) * | 2015-06-01 | 2015-09-16 | 广东美的制冷设备有限公司 | Air conditioner, and control method and control device for outdoor fan in air conditioner |
| CN106440587A (en) * | 2016-09-29 | 2017-02-22 | 海信（广东）空调有限公司 | Air conditioner refrigeration control method and air conditioner |
| CN106440241B (en) * | 2016-10-25 | 2019-03-01 | 青岛海信电子设备股份有限公司 | A kind of method for controlling speed regulation of outdoor fan of air-conditioner |
| CN107178875B (en) * | 2017-06-19 | 2020-06-30 | 广东美的暖通设备有限公司 | Air conditioner and control method and device of outdoor fan of air conditioner |
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