CN114427731A - Fan rotating speed control method and device of air conditioner and air conditioner - Google Patents
Fan rotating speed control method and device of air conditioner and air conditioner Download PDFInfo
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- CN114427731A CN114427731A CN202210078004.6A CN202210078004A CN114427731A CN 114427731 A CN114427731 A CN 114427731A CN 202210078004 A CN202210078004 A CN 202210078004A CN 114427731 A CN114427731 A CN 114427731A
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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
- F24F11/70—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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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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
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
- F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
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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
- F24F11/88—Electrical aspects, e.g. circuits
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
Abstract
The invention provides a method and a device for controlling the rotating speed of a fan of an air conditioner and the air conditioner, wherein the method comprises the following steps: acquiring indoor environment temperature, outdoor environment temperature, user set temperature and compressor exhaust temperature; adjusting the rotating speed of an indoor fan and the rotating speed of an outdoor fan according to a first difference value between the indoor environment temperature and the temperature set by a user; and adjusting the rotating speed of the outdoor fan according to a second difference value between the exhaust temperature of the compressor and the outdoor environment temperature. The embodiment of the invention can automatically adjust the wind speed of the fan, and the adjusting process takes the influences on the comfort of users and the operation reliability of the air conditioner into consideration, thereby improving the comfort experience of users and the operation reliability level of the air conditioner.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a method and a device for controlling the rotating speed of a fan of an air conditioner and the air conditioner.
Background
With the improvement of living standard and technology level, the requirement of people on the comfort of the air conditioner is higher and higher. The existing air conditioner is usually provided with a plurality of wind speed gears to enable a user to select by himself, so that an indoor fan of the air conditioner runs constantly at a certain rotating speed, the wind quantity can be kept fixed, the actual cold and hot feeling of the human body to the indoor environment is ignored, and the user comfort experience is insufficient.
Disclosure of Invention
The invention solves the problem that the comfort experience of a user is insufficient due to the existing control mode of the constant rotating speed of the indoor fan.
In order to solve the above problems, the present invention provides a method for controlling a rotational speed of a blower of an air conditioner, the method comprising: acquiring indoor environment temperature, outdoor environment temperature, user set temperature and compressor exhaust temperature; adjusting the rotating speed of an indoor fan and the rotating speed of an outdoor fan according to a first difference value between the indoor environment temperature and the user set temperature; the rotating speed of the indoor fan and the rotating speed of the outdoor fan are positively correlated with the first difference value; and adjusting the rotating speed of the outdoor fan according to a second difference value between the exhaust temperature of the compressor and the outdoor environment temperature, wherein the rotating speed of the outdoor fan is positively correlated with the second difference value.
According to the embodiment of the invention, the rotating speed of the indoor fan and the rotating speed of the outdoor fan can be adjusted according to the first difference value between the indoor environment temperature and the temperature set by the user, and the rotating speed of the outdoor fan is adjusted according to the second difference value between the exhaust temperature of the compressor and the outdoor environment temperature, so that the wind speed of the fan is automatically adjusted, the influence on the comfort of the user and the operation reliability of the air conditioner is considered in the adjusting process, and the comfort experience of the user and the operation reliability level of the air conditioner are improved.
Optionally, the adjusting the indoor fan rotation speed and the outdoor fan rotation speed according to the first difference between the indoor environment temperature and the user-set temperature includes: if the first difference value is larger than or equal to a preset threshold value, the rotating speed of the indoor fan and the rotating speed of the outdoor fan are increased; and if the first difference value is smaller than the preset threshold value, reducing the rotating speed of the indoor fan and the rotating speed of the outdoor fan.
Based on the heat exchange principle, the embodiment of the invention can improve the heat exchange efficiency by improving the rotating speed of both the indoor fan and the outdoor fan, thereby improving the capacity of the air conditioner, and conversely, reducing the capacity of the air conditioner.
Optionally, the adjusting the indoor fan speed and the outdoor fan speed according to the first difference between the indoor environment temperature and the user-set temperature includes: if the first difference value is larger than or equal to the first threshold value, adjusting the rotating speed of the indoor fan and the rotating speed of the outdoor fan to be the maximum rotating speed; if the first difference is smaller than the first threshold and greater than or equal to a second threshold, adjusting the rotating speed of the indoor fan to be the maximum rotating speed for a first time period, continuing to adjust the rotating speed of the indoor fan to be the first rotating speed, and adjusting the rotating speed of the outdoor fan to be the maximum rotating speed for a second time period, continuing to adjust the rotating speed of the outdoor fan to be the second rotating speed; the first rotational speed and the second rotational speed are both less than the maximum rotational speed; if the first difference value is smaller than the second threshold value and larger than or equal to a third threshold value, adjusting the rotating speed of the indoor fan to be a third rotating speed, and adjusting the rotating speed of the outdoor fan to be a fourth rotating speed; the third rotating speed is less than the first rotating speed, and the fourth rotating speed is less than the second rotating speed; if the first difference value is smaller than the third threshold value and larger than or equal to a fourth threshold value, adjusting the rotating speed of the indoor fan to be a fifth rotating speed, adjusting the rotating speed of the outdoor fan to be zero, and controlling a compressor to stop; the fifth rotational speed is less than the third rotational speed; and if the first difference value is smaller than the fourth threshold value, adjusting the rotating speed of the indoor fan and the rotating speed of the outdoor fan to be zero, and controlling the compressor to stop.
In the embodiment of the invention, in order to improve the accuracy of regulating the rotating speed based on the first difference, the first difference can be divided into a plurality of temperature intervals, and different regulating logics are adopted in each temperature interval, so that the comfort experience of a user is improved.
Optionally, the method further comprises: if the change value of the first difference value caused by the change of the temperature set by the user is larger than a preset change threshold value, immediately executing the step of adjusting the rotating speed of the indoor fan and the rotating speed of the outdoor fan; and if the change value of the first difference value caused by the change of the temperature set by the user is smaller than or equal to the preset change threshold value, controlling the rotating speed of the indoor fan to continuously operate for a second time at the current rotating speed, and then executing the step of adjusting the rotating speed of the indoor fan and the rotating speed of the outdoor fan.
In the embodiment of the invention, if the change value is larger, the user wishes urgently, and the adjusting logic needs to be executed immediately by a new first difference value; if the change value is small, the user wishes but is not urgent, the current rotating speed is firstly continued to operate for a certain time, and then the adjusting logic is executed by the new first difference value, so that the situation that the user feels suddenly cold and hot due to sudden temperature change is avoided.
Optionally, said adjusting the outdoor fan speed according to a second difference between the compressor discharge temperature and the outdoor ambient temperature comprises: if the second difference value is greater than or equal to a fifth threshold value and the exhaust temperature of the compressor is greater than or equal to a sixth threshold value, adjusting the rotating speed of the outdoor fan to be the maximum rotating speed; and if the second difference value is greater than or equal to the fifth threshold value after a third time period and the exhaust temperature of the compressor is greater than or equal to the sixth threshold value, adjusting the rotating speed of the outdoor fan to be zero and controlling the compressor to stop.
In the embodiment of the invention, in order to improve the reliability of regulating the rotating speed based on the second difference, the second difference can be divided into a plurality of temperature intervals, and different regulating logics are adopted in each temperature interval, so that the operation reliability of the air conditioner is improved.
Optionally, said adjusting the outdoor fan speed according to a second difference between the compressor discharge temperature and the outdoor ambient temperature comprises: if the second difference value is smaller than the fifth threshold value and the exhaust temperature of the compressor is smaller than the sixth threshold value, adjusting the rotating speed of the outdoor fan to be a sixth rotating speed; the sixth rotational speed is less than the maximum rotational speed.
In the embodiment of the invention, in order to improve the reliability of regulating the rotating speed based on the second difference, the second difference can be divided into a plurality of temperature intervals, and different regulating logics are adopted in each temperature interval, so that the operation reliability of the air conditioner is improved.
Optionally, a value range of the preset change threshold is [2, 3] ° c.
Optionally, a value range of the fifth threshold is [65, 75] degrees centigrade, or a value range of the sixth threshold is [105, 115] degrees centigrade.
The embodiment of the invention provides the specific value directions of all the thresholds, and the rotating speed of the fan is controlled based on the specific value directions, so that the comfort of users and the operation reliability of the air conditioner can be improved.
The invention provides a fan rotating speed control device of an air conditioner, which comprises: the temperature acquisition module is used for acquiring indoor environment temperature, outdoor environment temperature, user set temperature and compressor exhaust temperature; the indoor fan adjusting module is used for adjusting the rotating speed of an indoor fan and the rotating speed of an outdoor fan according to a first difference value between the indoor environment temperature and the temperature set by the user; the rotating speed of the indoor fan and the rotating speed of the outdoor fan are positively correlated with the first difference value; and the outdoor fan adjusting module is used for adjusting the rotating speed of the outdoor fan according to a second difference value between the exhaust temperature of the compressor and the outdoor environment temperature, and the rotating speed of the outdoor fan is positively correlated with the second difference value.
An embodiment of the present invention provides an air conditioner, including a computer-readable storage medium storing a computer program and a processor, where the computer program is read by the processor and executed to implement the above method.
An embodiment of the present invention provides a computer-readable storage medium, which stores a computer program, and when the computer program is read and executed by a processor, the computer program implements the method.
The fan rotating speed control device of the air conditioner, the air conditioner and the computer readable storage medium can achieve the same technical effect as the fan rotating speed control method of the air conditioner.
Drawings
FIG. 1 is a schematic flow chart of a method for controlling a rotational speed of a blower of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a fan rotation speed control device of an air conditioner according to an embodiment of the present invention.
Description of reference numerals:
201-temperature acquisition module; 202-indoor fan adjusting module; 203-outdoor fan regulating module.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
The air conditioner in the embodiment of the invention is at least provided with 3 temperature sensing devices which respectively detect the indoor environment temperature, the outdoor environment temperature and the compressor exhaust temperature.
Optionally, the indoor environment temperature sensing device is installed at an air inlet of the indoor unit, negative pressure is generated by rotation of the indoor unit fan blade, indoor air is sucked into an air duct of the air conditioner immediately, and the indoor air flows through the temperature sensing device when flowing into the air duct of the indoor unit, so that the actual temperature is detected; similarly, the outdoor temperature sensing device is arranged at an air inlet of the outdoor unit; the outdoor unit discharge temperature sensing device is installed on the discharge pipe of the air conditioner and needs to be as close as possible to the discharge port of the compressor to detect the most real discharge temperature.
The embodiment of the invention adjusts the rotating speed of the indoor fan and the rotating speed of the outdoor fan of the air conditioner meeting the comfort level of a user in real time by detecting the indoor environment temperature and combining the air conditioner running temperature set by the user; and calculating the difference between the outdoor exhaust air and the outdoor environment temperature by detecting the outdoor environment temperature and the outdoor unit exhaust air temperature, deducing the load state of the operation of the air conditioner, and then adjusting the rotating speed of the indoor fan and the rotating speed of the outdoor fan meeting the comfort level of the air conditioner in real time according to the load state. The method can improve the use comfort of the air conditioner, improve the operation reliability of the air conditioner and improve the use satisfaction of customers.
Fig. 1 is a schematic flow chart of a method for controlling a rotational speed of a blower of an air conditioner according to an embodiment of the present invention, the method including the steps of:
s102, obtaining indoor environment temperature, outdoor environment temperature, user set temperature and compressor exhaust temperature.
The acquisition time of each temperature is the same so as to accurately determine the current indoor thermal environment condition and the load state of the air conditioner.
And S104, adjusting the rotating speed of the indoor fan and the rotating speed of the outdoor fan according to a first difference value between the indoor environment temperature and the temperature set by the user.
And the rotating speed of the indoor fan and the rotating speed of the outdoor fan are positively correlated with the first difference value. The larger the difference between the indoor environment temperature and the user set temperature is, the farther the current indoor temperature is from the user requirement, and the capacity of the air conditioner needs to be improved so as to meet the user requirement as soon as possible. Based on the heat exchange principle, the efficiency of heat exchange can be improved by increasing the rotating speed of the indoor fan and the rotating speed of the outdoor fan, so that the capacity of the air conditioner is improved, and conversely, the capacity of the air conditioner is reduced.
Optionally, if the first difference is greater than or equal to a preset threshold, increasing the rotating speed of the indoor fan and the rotating speed of the outdoor fan; and if the first difference value is smaller than the preset threshold value, reducing the rotating speed of the indoor fan and the rotating speed of the outdoor fan.
When the difference between the set temperature of the user and the indoor environment temperature is large, the running rotating speed of the indoor fan is increased so as to increase the indoor air quantity, and the running rotating speed of the outdoor fan is increased so as to increase the outdoor air quantity. When the difference between the temperature set by the user and the indoor environment temperature is small, the running rotating speed of the indoor fan is reduced so as to reduce the air quantity of the indoor side, and the running rotating speed of the outdoor fan is reduced so as to reduce the air quantity of the outdoor side.
Taking the refrigeration operation as an example, if the indoor environment temperature is higher than the temperature set by the user and the difference between the indoor environment temperature and the temperature set by the user is greater than the preset threshold, a larger refrigeration capacity needs to be output at this time, and the rotating speed of the indoor fan and the rotating speed of the outdoor fan need to be increased correspondingly; with the heating operation as an example, if the indoor ambient temperature is lower than the user set temperature and the difference between the indoor ambient temperature and the user set temperature is greater than the preset threshold, then a greater heating amount needs to be output at this time, and accordingly the rotating speed of the indoor fan and the rotating speed of the outdoor fan need to be increased. On the contrary, if the difference value between the indoor temperature and the outdoor temperature is smaller than the preset threshold value, the current indoor environment temperature is close to the user requirement, and at the moment, the rotating speed of the indoor fan and the rotating speed of the outdoor fan are properly reduced, so that the indoor environment is prevented from being too cold and too hot, and the use comfort of the user is improved.
And S106, adjusting the rotating speed of the outdoor fan according to a second difference value between the exhaust temperature of the compressor and the outdoor environment temperature.
The load state of the operation of the air conditioner can be deduced through the second difference value between the exhaust temperature of the compressor and the outdoor environment temperature, and if the outdoor environment temperature is too high or the outdoor unit is unsmooth in air inlet and other bad working conditions exist, the heat exchange of the outdoor unit is poor, so that the pressure of the air conditioner is too high, the service life of the compressor can be damaged, and the reliability of the air conditioner is poor. Under the above circumstances, there is a reliability risk in long-term operation, and the exhaust temperature needs to be lowered, and at this time, the operating speed of the outdoor fan needs to be increased, and based on this, reliability control is also provided in this embodiment on the basis of the comfort adjustment control of S104. Specifically, the rotating speed of the outdoor fan can be adjusted according to the load state, so that the comfort requirement of the air conditioner is met, and the operation reliability of the air conditioner is improved.
The rotating speed of the outdoor fan is positively correlated with a second difference value, and the larger the second difference value is, the larger the rotating speed of the outdoor fan is adjusted to be.
According to the fan rotating speed control method of the air conditioner, the rotating speed of the indoor fan and the rotating speed of the outdoor fan can be adjusted according to the first difference value between the indoor environment temperature and the temperature set by the user, and the rotating speed of the outdoor fan is adjusted according to the second difference value between the exhaust temperature of the compressor and the outdoor environment temperature, so that the wind speed of the fan is automatically adjusted, the influence on the comfort of the user and the operation reliability of the air conditioner is considered in the adjusting process, and the comfort experience of the user and the operation reliability level of the air conditioner are improved.
In order to improve the accuracy of adjusting the rotating speed based on the first difference, the first difference can be divided into a plurality of temperature intervals, and different adjusting logics are adopted in each temperature interval. The specific control logic is as follows:
(1) and if the first difference value is larger than or equal to the first threshold value, adjusting the rotating speed of the indoor fan and the rotating speed of the outdoor fan to be the maximum rotating speed. In this case, the air conditioner needs to be operated with a strong force, and the operation rotation speeds of the indoor fan and the outdoor fan are maximized, thereby maximizing the air volumes of the indoor side and the outdoor side.
(2) And if the first difference is smaller than the first threshold and larger than or equal to the second threshold, the rotating speed of the indoor fan is continuously adjusted to be the first rotating speed after the rotating speed of the indoor fan is adjusted to be the maximum rotating speed and continuously operates for the first time period, and the rotating speed of the outdoor fan is continuously adjusted to be the second rotating speed after the rotating speed of the outdoor fan is adjusted to be the maximum rotating speed and continuously operates for the second time period.
The first rotating speed and the second rotating speed are both smaller than the maximum rotating speed. It should be noted that the temperature interval from the second threshold to the first threshold may be further subdivided into a plurality of temperature sub-intervals, and the first duration, the first rotation speed, the second duration, and the second rotation speed corresponding to each temperature sub-interval are different. For example, the temperature sub-interval may correspond to a greater temperature value, which may correspond to one or more of the first duration, the first speed, the second duration, or the second speed being greater than the parameter for the temperature sub-interval having the lesser temperature value.
By dividing the conditioning process into two phases: the air conditioner has the advantages that the air conditioner can be heated or cooled as fast as possible on the premise of guaranteeing the powerful operation of the air conditioner in the maximum rotating speed operation stage and the rotating speed reduction operation stage, the temperature can reach a certain comfort level as fast as possible, then the air conditioner can be heated or cooled at a relatively slow speed, the temperature can be stably changed until the requirement of a user, the rapid temperature change can be avoided, and the use comfort of the user is improved.
(3) And if the first difference value is smaller than the second threshold value and larger than or equal to the third threshold value, adjusting the rotating speed of the indoor fan to be a third rotating speed, and adjusting the rotating speed of the outdoor fan to be a fourth rotating speed. The third rotating speed is less than the first rotating speed, and the fourth rotating speed is less than the second rotating speed.
(4) And if the first difference value is smaller than the third threshold value and larger than or equal to the fourth threshold value, adjusting the rotating speed of the indoor fan to be a fifth rotating speed, adjusting the rotating speed of the outdoor fan to be zero, and controlling the compressor to stop. Wherein the fifth rotational speed is less than the third rotational speed. In the temperature interval from the third threshold value to the second threshold value and the temperature interval from the fourth threshold value to the third threshold value, the rotating speed of the outdoor fan is lower than that of the previous temperature interval until the rotating speed of the outdoor fan is reduced to zero, and the rotating speed of the indoor fan keeps a lower rotating speed, so that slight air outlet in a room is ensured, and slight wind feeling is continuously provided for a user.
(5) And if the first difference value is smaller than the fourth threshold value, adjusting the rotating speed of the indoor fan and the rotating speed of the outdoor fan to be zero, and controlling the compressor to stop. In the temperature range, the requirement of a user is exceeded, and the operation needs to be stopped in time, so that the indoor environment is prevented from being overheated or overcooled.
Considering that the user may adjust the user-set temperature while the air conditioner is operating, resulting in a change of the first difference value, the user's urgency for changing the output capability of the air conditioner may be determined based on the magnitude of the change value. If the change value is larger, the user's desire is urgent, and the adjusting logic needs to be executed immediately by a new first difference value; if the change value is small, the user wishes but is not urgent, the current rotating speed is firstly continued to operate for a certain time, and then the adjusting logic is executed by the new first difference value, so that the situation that the user feels suddenly cold and hot due to sudden temperature change is avoided. Specifically, the following steps may be performed:
if the change value of the first difference value is larger than a preset change threshold value due to the change of the temperature set by the user, immediately executing the step of adjusting the rotating speed of the indoor fan and the rotating speed of the outdoor fan;
and if the change value of the first difference value is smaller than or equal to the preset change threshold value due to the temperature change set by the user, controlling the rotating speed of the indoor fan to continuously operate for a second time at the current rotating speed, and then executing the step of adjusting the rotating speed of the indoor fan and the rotating speed of the outdoor fan.
Optionally, a value range of the preset change threshold is [2, 3] ° c.
In order to improve the reliability of adjusting the rotation speed based on the second difference, the second difference may be divided into a plurality of temperature intervals, and different adjustment logics may be used for each temperature interval. The specific control logic is as follows:
(1) if the second difference value is greater than or equal to the fifth threshold value and the exhaust temperature of the compressor is greater than or equal to the sixth threshold value, adjusting the rotating speed of the outdoor fan to be the maximum rotating speed;
and if the second difference value is greater than or equal to the fifth threshold value after the third time period and the exhaust temperature of the compressor is greater than or equal to the sixth threshold value, adjusting the rotating speed of the outdoor fan to be zero and controlling the compressor to stop.
After the third time period, the second difference still meets the conditions that the second difference is greater than or equal to the fifth threshold and the exhaust temperature of the compressor is greater than or equal to the sixth threshold, it is indicated that the outdoor unit of the air conditioner has a heat exchange fault at present, and the outdoor fan and the compressor need to be controlled to stop, so that the damage of devices such as the compressor is avoided.
(2) And if the second difference value is smaller than the fifth threshold value and the exhaust temperature of the compressor is smaller than the sixth threshold value, adjusting the rotating speed of the outdoor fan to be the sixth rotating speed. Wherein the sixth rotational speed is less than the maximum rotational speed. In this case, the rotation speed of the outdoor fan is further controlled by adjusting the rotation speed of the indoor fan and the rotation speed of the outdoor fan based on the first difference.
Optionally, a value range of the fifth threshold is [65, 75] degrees centigrade, or a value range of the sixth threshold is [105, 115] degrees centigrade.
Illustratively, recording the air conditioner operating temperature set by a user as Tset; reading the temperature value of the indoor environment temperature sensing device and recording as a T inner ring; reading the temperature value of the outdoor environment temperature sensing device, and recording as a T outer ring; reading the temperature value of the outdoor unit exhaust temperature sensing device and recording as T exhaust. Comfort control logic and reliability control logic are described separately below.
(1) Fan control logic 1 (comfort control logic), as follows:
t inner ring-T is more than or equal to 5
The rotating speed of the indoor unit runs at an ultra-strong gear, such as a 1.5P air conditioner, and is about 1300 r/min; the rotating speed of the outdoor unit runs at an ultra-strong gear, such as a 1.5P air conditioner, and is about 1000 r/min;
② 5 > T inner ring-T is more than or equal to 4
The rotating speed of the indoor unit runs for 30min according to the super-strong gear, so that after the room temperature is reduced to a certain comfort level, the rotating speed of the indoor fan is adjusted: the indoor rotating speed is adjusted to 95 percent of the super-strong gear; the rotating speed of the outdoor unit runs for 30min according to the super-strong gear, so that after the room temperature is reduced to a certain comfort level, the rotating speed of the outdoor fan is adjusted: the outdoor rotating speed is adjusted to 95 percent of the super-strong gear;
③ 4 > T inner ring-T is more than or equal to 3
The rotating speed of the indoor unit runs for 20min according to the super-strong gear, so that after the room temperature is reduced to a certain comfort level, the rotating speed of the indoor fan is adjusted: the indoor rotating speed is adjusted to 90% of the super-strong gear; the rotating speed of the outdoor unit runs for 20min according to the super-strong gear, so that after the room temperature is reduced to a certain comfort level, the rotating speed of the outdoor fan is adjusted: the outdoor rotating speed is adjusted to 90% of the super-strong gear;
fourthly, 3 is more than T inner ring-T is more than or equal to 2
The rotating speed of the indoor unit runs for 10min according to the super-strong gear, so that after the room temperature is reduced to a certain comfort level, the rotating speed of the indoor fan is adjusted: the indoor rotating speed is adjusted to 80% of the super-strong gear; the rotating speed of the outdoor unit runs for 10min according to the super-strong gear, so that after the room temperature is reduced to a certain comfort level, the rotating speed of the outdoor fan is adjusted: the outdoor rotating speed is adjusted to 80% of the super-strong gear;
fifthly, 2 is more than T inner ring-T is more than or equal to 1
The indoor rotating speed is adjusted to 70% of the super-strong gear; the outdoor rotating speed is adjusted to 70% of the super-strong gear;
sixthly, 1 is more than T inner ring-T is more than or equal to 0
The indoor rotating speed is adjusted to 60% of the super-strong gear; the outdoor rotating speed is adjusted to 60 percent of the super-strong gear;
seventhly 0 is more than T, the inner ring-T is more than or equal to-1
The indoor rotating speed is adjusted to be 30% of the super-strong gear, the compressor stops running, and the outdoor rotating speed is adjusted to be zero. At the moment, the refrigerating effect of the air conditioner well meets the requirements of users, the compressor needs to be stopped to operate, the indoor rotating speed is adjusted to be 30% of the super-strong gear (slight blowing is performed for the users, slight cooling is kept), and the outdoor fan stops operating.
The eight-1 is more than T inner ring-T
The indoor and outdoor rotation speeds are adjusted to be zero, and the outdoor rotation speed is adjusted to be zero. At the moment, the refrigeration effect of the air conditioner exceeds the requirement of a user, the inner fan and the outer fan need to stop running, and the supercooling of the user is avoided.
Further, in the use process of the air conditioner, the difference value of the "T inner ring-T set" may fluctuate due to fluctuation of the indoor environment temperature or adjustment of the T set by the user, and to improve comfort experience of the user, the air conditioner may further include the following logic:
when the difference value of the 'T inner ring-T set' is increased and the change value exceeds 2, the situation that a user urgently needs larger refrigerating capacity is indicated, and the rotating speed of the air conditioner needs to be changed immediately; if the difference value is larger and the variation value is not more than 2, in order to avoid bringing the experience of cold and hot to the user, firstly running for 5 minutes at the current rotating speed, and then carrying out gear shifting;
secondly, when the difference value of the 'T inner ring-T set' is smaller and the change value exceeds 2, the fact that a user urgently needs smaller refrigerating capacity is indicated, and the rotating speed of the air conditioner needs to be changed immediately; if the difference value becomes small and the variation value does not exceed 2, in order to avoid bringing the experience of sudden cold and sudden heat to the user, the operation is firstly carried out for 5 minutes at the current rotating speed, and then the gear shifting is carried out.
(2) Fan control logic 2 (reliability control logic), as follows:
before the air conditioner leaves the factory, the reliability test of the air conditioner can be carried out, and the problem of reliability can not exist in a normal running state. When some severe scenes occur (for example, when the air conditioner is installed, the inlet of the outdoor unit is installed close to the wall, so that the air inlet is not smooth, the outdoor unit cannot exchange heat, the pressure of the air conditioner is too high, the service life of the compressor is damaged), and the reliability is deteriorated. Therefore, the operational reliability of the air conditioner is also concerned while satisfying the user comfort. The logic for reliability control is as follows:
t exhaust-T outer ring is more than or equal to 70 ℃, and T exhaust is more than or equal to 110 DEG C
The long-term operation of the air conditioner has the hidden reliability trouble. The rotating speed of the indoor fan is operated at 30% of the super-strong gear, and the rotating speed of the outdoor unit is operated at the super-strong gear so as to reduce the exhaust temperature.
If the condition is still met after the indoor fan runs for 1 hour, the compressor needs to be stopped immediately, the rotating speed of the indoor fan runs according to comfort control logic, and the outdoor fan stops running. At this point, the operating logic priority level is higher than the logic 1 air conditioner comfort control.
② T exhaust-T outer ring is greater than or equal to 60, and 110 > T exhaust is greater than or equal to 90 DEG C
On the premise of meeting the comfort control, the rotating speed of the outdoor unit runs according to 90% of the super-strong gear.
③ T exhaust-T outer ring is more than or equal to 50 ℃ and 90 < T exhaust is more than or equal to 80 DEG C
On the premise of meeting the comfort control, the rotating speed of the outdoor unit runs at 85% of the super-strong gear.
50 > T exhaust-T outer ring, and 80 > T exhaust according to the logic control meeting the comfort
According to the embodiment of the invention, the running action of the fan of the air conditioner is automatically controlled according to the indoor environment temperature, the user set temperature, the outdoor environment temperature and the outdoor unit exhaust temperature, so that the use comfort and the running reliability of the air conditioner can be improved, and the use satisfaction of customers is improved.
Fig. 2 is a schematic structural diagram of a fan rotation speed control device of an air conditioner in an embodiment of the present invention, where the device includes:
a temperature obtaining module 201, configured to obtain an indoor ambient temperature, an outdoor ambient temperature, a user-set temperature, and a compressor discharge temperature;
the indoor fan adjusting module 202 is configured to adjust the rotating speed of the indoor fan and the rotating speed of the outdoor fan according to a first difference between the indoor environment temperature and the user set temperature; the rotating speed of the indoor fan and the rotating speed of the outdoor fan are positively correlated with the first difference value;
and the outdoor fan adjusting module 203 is configured to adjust the rotating speed of the outdoor fan according to a second difference between the discharge temperature of the compressor and the outdoor environment temperature, where the rotating speed of the outdoor fan is positively correlated to the second difference.
The fan rotating speed control device of the air conditioner provided by the embodiment of the invention can adjust the rotating speed of the indoor fan and the rotating speed of the outdoor fan according to the first difference value between the indoor environment temperature and the temperature set by the user, and adjust the rotating speed of the outdoor fan according to the second difference value between the exhaust temperature of the compressor and the outdoor environment temperature, so that the air speed of the fan is automatically adjusted, the influence on the comfort of the user and the operation reliability of the air conditioner is considered in the adjusting process, and the comfort experience of the user and the operation reliability level of the air conditioner are improved.
Optionally, the indoor fan adjusting module 202 is specifically configured to:
if the first difference value is larger than or equal to a preset threshold value, increasing the rotating speed of the indoor fan and the rotating speed of the outdoor fan; and if the first difference value is smaller than the preset threshold value, reducing the rotating speed of the indoor fan and the rotating speed of the outdoor fan.
Optionally, the indoor fan adjusting module 202 is specifically configured to:
if the first difference value is larger than or equal to the first threshold value, adjusting the rotating speed of the indoor fan and the rotating speed of the outdoor fan to be the maximum rotating speed;
if the first difference is smaller than the first threshold and greater than or equal to a second threshold, adjusting the rotating speed of the indoor fan to be the maximum rotating speed for a first time period, continuing to adjust the rotating speed of the indoor fan to be the first rotating speed, and adjusting the rotating speed of the outdoor fan to be the maximum rotating speed for a second time period, continuing to adjust the rotating speed of the outdoor fan to be the second rotating speed; the first rotational speed and the second rotational speed are both less than the maximum rotational speed;
if the first difference value is smaller than the second threshold value and larger than or equal to a third threshold value, adjusting the rotating speed of the indoor fan to be a third rotating speed, and adjusting the rotating speed of the outdoor fan to be a fourth rotating speed; the third rotating speed is less than the first rotating speed, and the fourth rotating speed is less than the second rotating speed;
if the first difference value is smaller than the third threshold value and larger than or equal to a fourth threshold value, adjusting the rotating speed of the indoor fan to be a fifth rotating speed, adjusting the rotating speed of the outdoor fan to be zero, and controlling a compressor to stop; the fifth rotational speed is less than the third rotational speed;
and if the first difference value is smaller than the fourth threshold value, adjusting the rotating speed of the indoor fan and the rotating speed of the outdoor fan to be zero, and controlling the compressor to stop.
Optionally, the indoor fan adjusting module 202 is further configured to:
if the change value of the first difference value caused by the change of the temperature set by the user is larger than a preset change threshold value, immediately executing the step of adjusting the rotating speed of the indoor fan and the rotating speed of the outdoor fan; and if the change value of the first difference value caused by the change of the temperature set by the user is smaller than or equal to the preset change threshold value, controlling the rotating speed of the indoor fan to continuously operate for a second time at the current rotating speed, and then executing the step of adjusting the rotating speed of the indoor fan and the rotating speed of the outdoor fan.
Optionally, the outdoor fan adjusting module 203 is specifically configured to:
if the second difference value is greater than or equal to a fifth threshold value and the exhaust temperature of the compressor is greater than or equal to a sixth threshold value, adjusting the rotating speed of the outdoor fan to be the maximum rotating speed; and if the second difference value is greater than or equal to the fifth threshold value after a third time period and the exhaust temperature of the compressor is greater than or equal to the sixth threshold value, adjusting the rotating speed of the outdoor fan to be zero and controlling the compressor to stop.
Optionally, the outdoor fan adjusting module 203 is specifically configured to:
if the second difference value is smaller than the fifth threshold value and the exhaust temperature of the compressor is smaller than the sixth threshold value, adjusting the rotating speed of the outdoor fan to be a sixth rotating speed; the sixth rotational speed is less than the maximum rotational speed.
Optionally, a value range of the preset change threshold is [2, 3] ° c.
Optionally, a value range of the fifth threshold is [65, 75] degrees centigrade, or a value range of the sixth threshold is [105, 115] degrees centigrade.
An embodiment of the present invention provides an air conditioner, including a computer-readable storage medium storing a computer program and a processor, where the computer program is read by the processor and executed to implement the above method.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is read and executed by a processor, the method provided in the foregoing embodiment is implemented, and the same technical effect can be achieved, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
Of course, those skilled in the art will understand that all or part of the processes in the methods of the above embodiments may be implemented by instructing the control device to perform operations through a computer, and the programs may be stored in a computer-readable storage medium, and when executed, the programs may include the processes of the above method embodiments, where the storage medium may be a memory, a magnetic disk, an optical disk, and the like.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected by one skilled in the art without departing from the spirit and scope of the invention, as defined in the appended claims.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus 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 apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The fan rotating speed control device of the air conditioner and the air conditioner disclosed by the embodiment correspond to the fan rotating speed control method of the air conditioner disclosed by the embodiment, so that the description is simple, and related points can be referred to the description of the method part.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (11)
1. A method for controlling the rotating speed of a fan of an air conditioner is characterized by comprising the following steps:
acquiring indoor environment temperature, outdoor environment temperature, user set temperature and compressor exhaust temperature; adjusting the rotating speed of an indoor fan and the rotating speed of an outdoor fan according to a first difference value between the indoor environment temperature and the user set temperature; the rotating speed of the indoor fan and the rotating speed of the outdoor fan are positively correlated with the first difference value;
and adjusting the rotating speed of the outdoor fan according to a second difference value between the exhaust temperature of the compressor and the outdoor environment temperature, wherein the rotating speed of the outdoor fan is positively correlated with the second difference value.
2. The method of claim 1, wherein said adjusting an indoor fan speed and an outdoor fan speed based on a first difference between the indoor ambient temperature and the user set temperature comprises:
if the first difference value is larger than or equal to a preset threshold value, increasing the rotating speed of the indoor fan and the rotating speed of the outdoor fan; and if the first difference value is smaller than the preset threshold value, reducing the rotating speed of the indoor fan and the rotating speed of the outdoor fan.
3. The method of claim 1, wherein said adjusting an indoor fan speed and an outdoor fan speed based on a first difference between the indoor ambient temperature and the user set temperature comprises:
if the first difference value is larger than or equal to a first threshold value, adjusting the rotating speed of the indoor fan and the rotating speed of the outdoor fan to be the maximum rotating speed;
if the first difference is smaller than the first threshold and greater than or equal to a second threshold, adjusting the rotating speed of the indoor fan to be the maximum rotating speed for a first time period, continuing to adjust the rotating speed of the indoor fan to be the first rotating speed, and adjusting the rotating speed of the outdoor fan to be the maximum rotating speed for a second time period, continuing to adjust the rotating speed of the outdoor fan to be the second rotating speed; the first rotating speed and the second rotating speed are both smaller than the maximum rotating speed;
if the first difference value is smaller than the second threshold value and larger than or equal to a third threshold value, adjusting the rotating speed of the indoor fan to be a third rotating speed, and adjusting the rotating speed of the outdoor fan to be a fourth rotating speed; the third rotating speed is less than the first rotating speed, and the fourth rotating speed is less than the second rotating speed;
if the first difference value is smaller than the third threshold value and larger than or equal to a fourth threshold value, adjusting the rotating speed of the indoor fan to be a fifth rotating speed, adjusting the rotating speed of the outdoor fan to be zero, and controlling a compressor to stop; the fifth rotational speed is less than the third rotational speed;
and if the first difference value is smaller than the fourth threshold value, adjusting the rotating speed of the indoor fan and the rotating speed of the outdoor fan to be zero, and controlling the compressor to stop.
4. The method of claim 3, wherein the method further comprises:
if the change value of the first difference value caused by the change of the temperature set by the user is larger than a preset change threshold value, immediately executing the step of adjusting the rotating speed of the indoor fan and the rotating speed of the outdoor fan;
and if the change value of the first difference value caused by the change of the temperature set by the user is smaller than or equal to the preset change threshold value, controlling the rotating speed of the indoor fan to continuously operate for a second time at the current rotating speed, and then executing the step of adjusting the rotating speed of the indoor fan and the rotating speed of the outdoor fan.
5. The method of claim 1, wherein said adjusting said outdoor fan speed based on a second difference between said compressor discharge temperature and said outdoor ambient temperature comprises:
if the second difference value is greater than or equal to a fifth threshold value and the exhaust temperature of the compressor is greater than or equal to a sixth threshold value, adjusting the rotating speed of the outdoor fan to be the maximum rotating speed;
and if the second difference value is greater than or equal to the fifth threshold value after a third time period and the exhaust temperature of the compressor is greater than or equal to the sixth threshold value, adjusting the rotating speed of the outdoor fan to be zero and controlling the compressor to stop.
6. The method of claim 1, wherein said adjusting said outdoor fan speed based on a second difference between said compressor discharge temperature and said outdoor ambient temperature comprises:
if the second difference value is smaller than the fifth threshold value and the exhaust temperature of the compressor is smaller than the sixth threshold value, adjusting the rotating speed of the outdoor fan to be a sixth rotating speed; the sixth rotational speed is less than the maximum rotational speed.
7. The method of claim 4, wherein the predetermined change threshold is in a range of [2, 3] ° C.
8. The method of claim 5 or 6, wherein the fifth threshold value is in a range of [65, 75] C or the sixth threshold value is in a range of [105, 115] C.
9. A fan rotation speed control apparatus of an air conditioner, the apparatus comprising:
the temperature acquisition module is used for acquiring indoor environment temperature, outdoor environment temperature, user set temperature and compressor exhaust temperature;
the indoor fan adjusting module is used for adjusting the rotating speed of an indoor fan and the rotating speed of an outdoor fan according to a first difference value between the indoor environment temperature and the temperature set by the user; the rotating speed of the indoor fan and the rotating speed of the outdoor fan are positively correlated with the first difference value;
and the outdoor fan adjusting module is used for adjusting the rotating speed of the outdoor fan according to a second difference value between the exhaust temperature of the compressor and the outdoor environment temperature, and the rotating speed of the outdoor fan is positively correlated with the second difference value.
10. An air conditioner comprising a computer readable storage medium storing a computer program and a processor, the computer program being read and executed by the processor to implement the method according to any one of claims 1 to 8.
11. A computer-readable storage medium, characterized in that it stores a computer program which, when read and executed by a processor, implements the method according to any one of claims 1-8.
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| WO2023221247A1 (en) * | 2022-05-19 | 2023-11-23 | 广东美的制冷设备有限公司 | Air conditioner control method and apparatus, and air conditioner and storage medium |
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