CN110744984B - Fan control method and device of air conditioner, air conditioner and storage medium - Google Patents

Fan control method and device of air conditioner, air conditioner and storage medium Download PDF

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Publication number
CN110744984B
CN110744984B CN201911053575.9A CN201911053575A CN110744984B CN 110744984 B CN110744984 B CN 110744984B CN 201911053575 A CN201911053575 A CN 201911053575A CN 110744984 B CN110744984 B CN 110744984B
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air conditioner
fan
heat dissipation
determining
coefficient
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CN110744984A (en
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霍兆镜
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GD Midea Air Conditioning Equipment Co Ltd
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GD Midea Air Conditioning Equipment Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • 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
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention provides a fan control method and device of an air conditioner, the air conditioner and a storage medium. The fan control method of the air conditioner comprises the following steps: acquiring the ambient temperature and determining the heat dissipation coefficient of the air conditioner according to the ambient temperature; determining a corresponding first set fan rotating speed according to the heat dissipation coefficient setting; the fan of the air conditioner is controlled to operate at a first set fan speed. The environment temperature is detected through the detection part for setting the environment temperature, and the fan of the vehicle-mounted air conditioner is controlled according to the detected environment temperature, so that the problem of resource waste caused by starting the vehicle-mounted air conditioner and starting the cooling fan is avoided, the overall oil consumption of the automobile is saved, and the environment-friendly requirements of energy conservation and emission reduction are met.

Description

Fan control method and device of air conditioner, air conditioner and storage medium
Technical Field
The invention relates to the technical field of vehicle-mounted air conditioners, in particular to a fan control method of an air conditioner, a fan control device of the air conditioner, the air conditioner and a computer readable storage medium.
Background
At present, vehicle-mounted battery powered air conditioners in gasoline vehicles all adopt direct current fans for heat dissipation. The control mode is basically that the fan is always turned on to radiate the heat of the condenser. The vehicle-mounted air conditioner is installed on an automobile, and the electric energy is wasted due to the fact that the fan is opened all the time to radiate heat of the condenser, and oil consumption is increased. How to reduce the resources occupied by the operation of the outdoor fan in the vehicle-mounted air conditioner becomes a problem which needs to be solved urgently.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, a first aspect of the present invention provides a fan control method of an air conditioner.
A second aspect of the present invention provides a fan control apparatus of an air conditioner.
A third aspect of the present invention provides an air conditioner.
A fourth aspect of the invention provides a computer-readable storage medium.
In order to achieve the above object, according to a first aspect of the present invention, there is provided a fan control method for an air conditioner, comprising: acquiring the ambient temperature and determining the heat dissipation coefficient of the air conditioner according to the ambient temperature; determining a corresponding first set fan rotating speed according to the heat dissipation coefficient setting; the fan of the air conditioner is controlled to operate at a first set fan speed.
In the technical scheme, the environment temperature is detected, the heat dissipation coefficient of the air conditioner is determined according to the environment temperature, the first set rotating speed of the fan is determined according to the heat dissipation coefficient, the fan is controlled to operate at the first set rotating speed, and the control of the operating state of the fan of the air conditioner according to the environment temperature is realized.
It can be understood that, in the use process of the vehicle-mounted air conditioner, the vehicle may generate enough airflow to dissipate heat of the vehicle-mounted air conditioner when running on the road, or the air conditioner directly exchanges heat with ambient air to meet the heat dissipation requirement of the air conditioner when the vehicle stops in a low-temperature environment. The environment temperature is detected through the detection part for setting the environment temperature, and the fan of the vehicle-mounted air conditioner is controlled according to the detected environment temperature, so that the problem of resource waste caused by starting the vehicle-mounted air conditioner and starting the cooling fan is avoided, the overall oil consumption of the automobile is saved, and the environment-friendly requirements of energy conservation and emission reduction are met.
In any of the above technical solutions, the step of determining the heat dissipation coefficient according to the ambient temperature specifically includes: determining a power coefficient of the air conditioner; and determining the heat dissipation coefficient according to the power coefficient and the set heat dissipation value.
In the technical scheme, the power coefficient of the air conditioner is determined according to the ambient temperature, and the heat dissipation coefficient is calculated according to the power coefficient and the set heat dissipation value. The heat dissipation value is set as the heat dissipation value of the condenser in a rated natural wind state, and the air conditioner is subjected to detection experiment and calculation to obtain a set value when leaving the factory. The formula for determining the heat dissipation coefficient according to the power coefficient and the set heat dissipation value is as follows:
△H＝H×Ki+x；
wherein, delta H is a heat dissipation coefficient, H is a set heat dissipation value, ki is a power coefficient, and x is a correction coefficient.
It can be understood that the heat dissipation coefficient is obtained by adding the power coefficient and the correction coefficient after the heat dissipation is set and multiplied only by the power coefficient, wherein the correction coefficient can reduce the deviation between the calculated heat dissipation coefficient and the actual detection, so that the heat dissipation coefficient obtained by formula calculation is more accurate, and the accurate control of the air conditioner fan is ensured.
In any of the above technical solutions, the step of determining the power coefficient of the air conditioner specifically includes: acquiring the actual operating power of the air conditioner, and determining the actual energy efficiency ratio of the air conditioner; and determining a power coefficient according to the actual operating power, the rated power and the actual energy efficiency ratio.
In the technical scheme, the actual operation power of the air conditioner is detected, the actual energy efficiency ratio of the air conditioner is determined, and the power coefficient is obtained by calculating the actual operation power, the rated power and the actual energy efficiency ratio through the following formula:
Ki＝Pf/Pe×K；
wherein Ki is a power coefficient, pf is actual operating power, pe is rated power, and K is actual energy efficiency ratio.
It can be understood that the actual operation power is calculated and determined according to the detected parameters such as the real-time current and voltage when the air conditioner actually operates. The rated power is the running power of the air conditioner in a rated state.
In any of the above technical solutions, the step of determining the actual energy efficiency ratio of the air conditioner specifically includes: determining a set temperature interval according to the environment temperature; and determining the actual energy efficiency ratio corresponding to the environment temperature of the air conditioner according to the corresponding relation between the set temperature interval and the energy efficiency ratio.
In the technical scheme, the energy efficiency ratio is the ratio of the actual refrigerating capacity to the actual input power when the air conditioner works, and the actual energy efficiency ratio of the air conditioner is different according to different specific working conditions. A corresponding table of the corresponding relation between the environment temperature interval and the energy efficiency ratio is stored in a control system of the air conditioner, the actual energy efficiency ratio is inquired in the corresponding table through the detected actual environment temperature, and the actual energy efficiency ratio under the environment temperature where the air conditioner is located is determined.
In any of the above technical solutions, the step of determining the corresponding first set fan rotation speed specifically includes: and calculating the first set fan rotating speed according to the heat dissipation coefficient, the set heat dissipation coefficient and the rotating speed coefficient.
In the technical scheme, the first set fan rotating speed of the fan is determined through the heat dissipation coefficient, the set heat dissipation coefficient and the rotating speed coefficient according to the following formula, the first set fan rotating speed of the fan is determined through the heat dissipation coefficient obtained through calculation according to the environment temperature, the regulation and control of the fan rotating speed according to the environment temperature are realized, and the specific formula for calculating the first set fan rotating speed is as follows:
n＝(△H-△He)×Kj×1000；
wherein n is the first set fan rotating speed, Δ H is the heat dissipation coefficient, Δ He is the set heat dissipation coefficient, and Kj is the rotating speed coefficient.
It is understood that the speed coefficient is a fixed value that is set. And setting the heat dissipation coefficient to be a set value, wherein the heat dissipation coefficient is determined according to the ambient temperature of the air conditioner when the air conditioner does not need the fan to start for heat dissipation. The first set fan rotating speed of the fan can be calculated through the formula, and the fan operates at the first set fan rotating speed obtained through calculation under the condition that the ambient temperature does not sufficiently exchange heat with the air conditioner condenser, so that the auxiliary heat dissipation effect on the air conditioner is achieved.
In any of the above technical solutions, the step of determining the corresponding first set fan rotation speed further includes: and determining that the heat dissipation coefficient is larger than the set heat dissipation coefficient, and determining a first set fan rotating speed corresponding to the heat dissipation coefficient.
In the technical scheme, under the condition that the heat dissipation coefficient is larger than the set heat dissipation coefficient, the natural wind can be considered to fail to meet the heat dissipation requirement of the vehicle-mounted air conditioner, and based on the condition that the natural wind cannot meet the requirement, the first set fan rotating speed after the fan is started is calculated; if the heat dissipation coefficient is smaller than the set heat dissipation coefficient, the natural wind can be considered to be enough to meet the heat dissipation requirement of the vehicle-mounted air conditioner, the starting of the fan is not required to be controlled, and the rotating speed of the fan after the starting can be not calculated any more based on the condition that the natural wind can meet the requirement. The corresponding rotating speed can be set according to the ambient temperature under the condition that natural wind cannot meet the heat dissipation requirement, and meanwhile, the rotating speed of the fan is not calculated under the condition that the natural wind is enough to dissipate heat of the air conditioner, so that the effect of reducing the unnecessary calculation amount of the system is achieved.
It can be understood that, under the condition that the heat dissipation coefficient is determined to be smaller than the set heat dissipation coefficient, the fan of the air conditioner does not need to be controlled to start up for heat dissipation, new environment temperature is obtained again after a certain time is continued, the heat dissipation coefficient is calculated, whether the air conditioner needs to be controlled to start up for heat dissipation is judged again, and if the heat dissipation coefficient is larger than the set heat dissipation coefficient when the judgment is carried out again, the first set fan rotating speed is calculated so as to control the air conditioner fan to operate at the first set fan rotating speed.
In any of the above technical solutions, the fan control method further includes: and after the fan is controlled to operate at the first set fan rotating speed for a set time, returning to execute the steps of obtaining the ambient temperature and determining the heat dissipation coefficient according to the ambient temperature.
In the technical scheme, under the condition that the heat dissipation coefficient is determined to be larger than the set heat dissipation coefficient, the fan is controlled to operate at the calculated first set fan rotating speed, the environment temperature is obtained again after the set duration is continued, the heat dissipation coefficient is calculated again, whether the air conditioner needs to be controlled to start up for heat dissipation or not is judged again, if yes, the air conditioner is controlled, and the heat dissipation coefficient and the rotating speed obtained through recalculation are carried out according to the environment temperature obtained again. The control and adjustment of the working state of the air conditioner fan and the specific fan rotating speed are realized according to the ambient temperature every set time.
It can be understood that when the vehicle-mounted air conditioner is used in the running state of the vehicle, the working condition environment of the vehicle-mounted air conditioner is always in a changing state, the set time duration is preset, the environment temperature is obtained by detecting again after the set time duration, the heat dissipation coefficient is calculated according to the obtained environment temperature to control the fan, and the control of the heat dissipation system of the air conditioner according to the environment temperature changing in the running of the vehicle is realized.
In any of the above technical solutions, the fan control method further includes: acquiring the temperature of an outdoor heat exchanger of the air conditioner; and if the ambient temperature is higher than the set temperature difference of the outdoor heat exchanger, controlling the fan to rotate at a second set fan rotating speed.
In the technical scheme, in the control process of the air conditioner fan, if the temperature of the outdoor heat exchanger is higher than the temperature setting temperature difference value of the outdoor heat exchanger, the outdoor heat exchanger can be judged to be incapable of radiating heat through ambient air, the fan is directly controlled to rotate at the second setting fan rotating speed, and the effect of cooling the outdoor heat exchanger is achieved. The problem of untimely heat dissipation under the condition of overhigh temperature of the outdoor heat exchanger is solved by detecting the temperature of the outdoor heat exchanger in real time, the effect of emergent heat dissipation on the temperature of the outdoor heat exchanger is achieved in the process of controlling the fan according to the ambient temperature, and the stability of the vehicle-mounted air conditioner is guaranteed while the occupied resources of the vehicle-mounted air conditioner are reduced.
It will be appreciated that the second set fan speed is a higher speed. When the environment temperature cannot lower the heat exchange temperature of the outdoor heat exchanger, the fan is controlled to operate at a high rotating speed, so that the effect of quickly lowering the temperature of the outdoor heat exchanger can be guaranteed.
According to a second aspect of the present invention, there is provided a fan control device for an air conditioner, comprising: the air conditioner fan control device comprises a memory, a processor and a computer program which is stored in the memory and can run on the processor, wherein the computer program realizes the steps of the air conditioner fan control method defined in any technical scheme when being executed by the processor.
According to an aspect of the third aspect of the present invention, there is provided an air conditioner including: the fan control device of the air conditioner and the external machine load defined by any one of the above technical schemes are connected with the fan control device of the air conditioner, the external machine load comprises a fan, and the fan control device can control the running state of the fan to determine whether the fan is started and the running rotating speed of the fan after the fan is started. The fan control apparatus is directed to a step of a fan control method of driving an air conditioner as defined in any one of the above-described technical solutions. The air conditioner has all the beneficial effects of the fan control method of the air conditioner and the control device of the air conditioner in any technical scheme, and the description is omitted.
According to an aspect of the fourth aspect of the present invention, there is provided a computer-readable storage medium, on which a fan control program of an air conditioner is stored, the fan control program of the air conditioner, when being executed by a processor, implementing the steps of the fan control method of the air conditioner as defined in any one of the above aspects. All the beneficial effects of the control method of the air conditioner with any one of the above technical schemes are not described herein again.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic flowchart illustrating a fan control method of an air conditioner according to an embodiment of the present invention;
fig. 2 is a flow chart illustrating a fan control method of an air conditioner according to another embodiment of the present invention;
fig. 3 is a flowchart illustrating a fan control method of an air conditioner according to still another embodiment of the present invention;
fig. 4 is a flowchart illustrating a fan control method of an air conditioner according to still another embodiment of the present invention;
fig. 5 is a flow chart illustrating a fan control method of an air conditioner according to still another embodiment of the present invention;
fig. 6 is a flowchart illustrating a fan control method of an air conditioner according to still another embodiment of the present invention;
fig. 7 is a flowchart illustrating a fan control method of an air conditioner according to still another embodiment of the present invention;
fig. 8 is a schematic structural view illustrating a fan control apparatus of an air conditioner according to still another embodiment of the present invention.
Wherein the correspondence between the structure and the markers shown in fig. 8 is as follows:
100 fan control device of air conditioner, 120 memory, 140 processor.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
A fan control method of an air conditioner, a fan control apparatus of an air conditioner, and a computer-readable storage medium according to some embodiments of the present invention are described below with reference to fig. 1 to 8.
The first embodiment is as follows:
as shown in fig. 1, in one embodiment of the present invention, a method for controlling an air conditioner includes:
step S102, obtaining the ambient temperature and determining the heat dissipation coefficient of the air conditioner according to the ambient temperature;
step S104, determining a corresponding first set fan rotating speed according to the heat dissipation coefficient setting;
and step S106, controlling the fan of the air conditioner to operate at a first set fan rotating speed.
In the embodiment, the environment temperature is detected, the heat dissipation coefficient of the air conditioner is determined according to the environment temperature, the first set rotating speed of the fan is determined according to the heat dissipation coefficient, the fan is controlled to operate at the first set rotating speed, and the control of the operating state of the fan of the air conditioner according to the environment temperature is realized.
It can be understood that, in the use process of the vehicle-mounted air conditioner, the vehicle may generate enough airflow to dissipate heat of the vehicle-mounted air conditioner when running on the road, or the air conditioner directly exchanges heat with ambient air to meet the heat dissipation requirement of the air conditioner when the vehicle stops in a low-temperature environment. The environment temperature is detected through the detection part for setting the environment temperature, and the fan of the vehicle-mounted air conditioner is controlled according to the detected environment temperature, so that the problem of resource waste caused by starting the vehicle-mounted air conditioner and starting the cooling fan is avoided, the overall oil consumption of the automobile is saved, and the environment-friendly requirements of energy conservation and emission reduction are met.
As shown in fig. 2, in any of the above embodiments, the step of determining the heat dissipation coefficient according to the ambient temperature specifically includes:
step S202, determining a power coefficient of the air conditioner;
and step S204, determining a heat dissipation coefficient according to the power coefficient and the set heat dissipation value.
In the embodiment, the power coefficient of the air conditioner is determined according to the ambient temperature, and the heat dissipation coefficient is calculated according to the power coefficient and the set heat dissipation value. The heat dissipation value is set as the heat dissipation value of the condenser in a rated natural wind state, and the set value is obtained through detection experiments and calculation when the air conditioner leaves a factory. The formula for determining the heat dissipation coefficient according to the power coefficient and the set heat dissipation value is as follows:
△H＝H×Ki+x；
wherein, delta H is a heat dissipation coefficient, H is a set heat dissipation value, ki is a power coefficient, and x is a correction coefficient.
It can be understood that the heat dissipation coefficient is obtained by adding the power coefficient and the correction coefficient after the heat dissipation is set and multiplied by the power coefficient, wherein the correction coefficient can reduce the deviation between the calculated heat dissipation coefficient and the actual detection, so that the heat dissipation coefficient obtained by formula calculation is more accurate, and the accurate control of the air conditioner fan is ensured.
As shown in fig. 3, in any of the above embodiments, the step of determining the power coefficient of the air conditioner specifically includes:
step S302, acquiring the actual operating power of the air conditioner, and determining the actual energy efficiency ratio of the air conditioner;
and step S304, determining a power coefficient according to the actual operation power, the rated power and the actual energy efficiency ratio.
In this embodiment, the actual operating power of the air conditioner is detected, the actual energy efficiency ratio of the air conditioner is determined, and the power coefficient is obtained by calculating the actual operating power, the rated power, and the actual energy efficiency ratio according to the following formula, where the specific formula is as follows:
Ki＝Pf/Pe×K；
wherein Ki is a power coefficient, pf is actual operating power, pe is rated power, and K is actual energy efficiency ratio.
It can be understood that the actual operation power is calculated and determined according to the detected parameters such as the real-time current and voltage when the air conditioner actually operates. The rated power is the running power of the air conditioner in a rated state.
As shown in fig. 4, in any of the above embodiments, the step of determining the actual energy efficiency ratio of the air conditioner specifically includes:
step S402, determining a set temperature interval according to the environment temperature;
step S404, determining the actual energy efficiency ratio corresponding to the environment temperature of the air conditioner according to the corresponding relation between the set temperature interval and the energy efficiency ratio.
In this embodiment, the energy efficiency ratio is a ratio of an actual cooling capacity to an actual input power when the air conditioner is in operation, and the actual energy efficiency ratio of the air conditioner is different according to different specific working conditions. A corresponding table of the corresponding relation between the environment temperature interval and the energy efficiency ratio is stored in a control system of the air conditioner, the actual energy efficiency ratio is inquired in the corresponding table through the detected actual environment temperature, and the actual energy efficiency ratio under the environment temperature where the air conditioner is located is determined.
In any of the above embodiments, the step of determining the corresponding first set blower rotation speed specifically includes: and calculating the first set fan rotating speed according to the heat dissipation coefficient, the set heat dissipation coefficient and the rotating speed coefficient.
In this embodiment, the first set fan speed of the fan is determined by the following formula through the heat dissipation coefficient, the set heat dissipation coefficient and the speed coefficient, and the first set fan speed of the fan operation is determined by the heat dissipation coefficient calculated according to the ambient temperature, so that the regulation and control of the fan speed according to the ambient temperature are realized, and the specific formula for calculating the first set fan speed is as follows:
n＝(△H-△He)×Kj×1000；
wherein n is the first set fan rotating speed, Δ H is the heat dissipation coefficient, Δ He is the set heat dissipation coefficient, and Kj is the rotating speed coefficient.
It is understood that the speed coefficient is a fixed value that is set. And setting the heat dissipation coefficient to be a set value, wherein the heat dissipation coefficient is determined according to the ambient temperature of the air conditioner when the air conditioner does not need the fan to start for heat dissipation. The first set fan rotating speed of the fan operation can be calculated through the formula, and under the condition that the ambient temperature is insufficient for heat exchange of the air conditioner condenser, the fan operates at the first set fan rotating speed obtained through calculation, so that the auxiliary heat dissipation effect on the air conditioner is achieved.
Example two:
as shown in fig. 5, in still another embodiment of the present invention, a fan control method of an air conditioner includes:
step S502, obtaining the ambient temperature and determining the heat dissipation coefficient of the air conditioner according to the ambient temperature;
step S504, judge whether the heat dissipation coefficient is greater than the heat dissipation coefficient presumed, the judged result is to carry out step S506, the judged result returns to and carries out step S502;
step S506, determining a corresponding first set fan rotating speed according to the heat dissipation coefficient setting;
and step S508, controlling the fan of the air conditioner to operate at a first set fan rotating speed.
In the embodiment, when the heat dissipation coefficient is greater than the set heat dissipation coefficient, it can be considered that the natural wind cannot meet the heat dissipation requirement of the vehicle-mounted air conditioner, and based on the condition that the natural wind cannot meet the requirement, the first set fan rotating speed after the fan is started is calculated; if the heat dissipation coefficient is smaller than the set heat dissipation coefficient, the natural wind can be considered to be enough to meet the heat dissipation requirement of the vehicle-mounted air conditioner, the starting of the fan is not required to be controlled, and the rotating speed of the fan after the starting can be not calculated any more based on the condition that the natural wind can meet the requirement. The corresponding rotating speed can be set according to the ambient temperature under the condition that natural wind cannot meet the heat dissipation requirement, and meanwhile, the rotating speed of the fan is not calculated under the condition that the natural wind is enough to dissipate heat of the air conditioner, so that the effect of reducing the unnecessary calculation amount of the system is achieved.
It can be understood that, under the condition that the heat dissipation coefficient is determined to be smaller than the set heat dissipation coefficient, the fan of the air conditioner does not need to be controlled to start up for heat dissipation, new environment temperature is obtained again after a certain time is continued, the heat dissipation coefficient is calculated, whether the air conditioner needs to be controlled to start up for heat dissipation is judged again, and if the heat dissipation coefficient is larger than the set heat dissipation coefficient when the judgment is carried out again, the first set fan rotating speed is calculated so as to control the air conditioner fan to operate at the first set fan rotating speed.
In any of the above embodiments, the fan control method further includes: and after the fan is controlled to operate at the first set fan rotating speed for a set time, returning to execute the steps of obtaining the environment temperature and determining the heat dissipation coefficient according to the environment temperature.
In the embodiment, under the condition that the heat dissipation coefficient is determined to be larger than the set heat dissipation coefficient, the fan is controlled to operate at the calculated first set fan rotating speed, the ambient temperature is obtained again after the set duration is continued, the heat dissipation coefficient is calculated again, whether the air conditioner needs to be controlled to start up for heat dissipation or not is judged again, if yes, the air conditioner is controlled, and the heat dissipation coefficient and the rotating speed obtained through recalculation are obtained again according to the obtained ambient temperature. The working state of the air conditioner fan and the specific rotating speed of the fan can be controlled and adjusted according to the ambient temperature every set time.
It can be understood that when the vehicle-mounted air conditioner is used in the running state of the vehicle, the working condition environment of the vehicle-mounted air conditioner is always in a changing state, the set time duration is preset, the environment temperature is obtained by detecting again after the set time duration, the heat dissipation coefficient is calculated according to the obtained environment temperature to control the fan, and the control of the heat dissipation system of the air conditioner according to the environment temperature changing in the running of the vehicle is realized.
Example three:
as shown in fig. 6, in still another embodiment of the present invention, the method for controlling a fan of an air conditioner further includes:
step S602, acquiring the temperature of an outdoor heat exchanger of the air conditioner;
and step S604, if the ambient temperature is higher than the set temperature difference of the outdoor heat exchanger, controlling the fan to operate at a second set fan rotating speed.
In this embodiment, in the control process of the air conditioner fan, if the temperature of the outdoor heat exchanger is higher than the set temperature difference of the temperature of the outdoor heat exchanger, it can be determined that the outdoor heat exchanger cannot dissipate heat through ambient air, and the fan is directly controlled to operate at the second set fan rotation speed, so that the effect of cooling the outdoor heat exchanger is achieved. The problem of untimely heat dissipation under the condition of overhigh temperature of the outdoor heat exchanger is solved by detecting the temperature of the outdoor heat exchanger in real time, the effect of emergent heat dissipation on the temperature of the outdoor heat exchanger is achieved in the process of controlling the fan according to the ambient temperature, and the stability of the vehicle-mounted air conditioner is guaranteed while the occupied resources of the vehicle-mounted air conditioner are reduced.
It will be appreciated that the second set fan speed is a higher speed. When the environment temperature cannot lower the heat exchange temperature of the outdoor heat exchanger, the fan is controlled to operate at a high rotating speed, so that the effect of quickly lowering the temperature of the outdoor heat exchanger can be guaranteed.
Example four:
as shown in fig. 7, in a complete embodiment of the present invention, the method for controlling a fan of an air conditioner further includes:
step S702, calculating a power coefficient Ki according to the ambient temperature;
step S704, calculating a heat dissipation coefficient delta H;
step S706, determining whether Δ H > - Δ He is satisfied, if yes, executing step S708, otherwise, after setting time length, returning to execute step S702;
step 708, calculating a first set fan rotating speed n;
and step S710, controlling the air conditioner fan to operate at the first set fan rotating speed n, and returning to execute the step S702 after the operation lasts for a set time.
When the judgment result shows that the delta H is less than the delta He, the fan is not started, the corresponding rotating speed of the fan is not required to be calculated, and the step of calculating the power coefficient Ki according to the environment temperature is returned after the time delay is set for a long time; and controlling the air conditioner fan to operate at a first set fan rotating speed n, and feeding back and executing the step of calculating the power coefficient Ki according to the ambient temperature after the operation lasts for a set time.
After the air conditioner is started, firstly, calculating a power coefficient Ki by an electric control board according to an environment temperature T4 and actual operation power Pf, wherein Ki = Pf/Pe multiplied by K, pf is the actual operation power, pe is the working power in a rated state, K is the temperature, and the energy efficiency ratio when the temperature T4 of the environment where an air conditioner outdoor unit is located is T. Then calculating a heat dissipation coefficient delta H = H multiplied by Ki + x, wherein when H is a rated natural wind state, the heat dissipation value of the condenser is calculated, and x is a correction coefficient; if delta H is larger than delta He, the fan is started, and if delta H is smaller than delta He, the fan is not started. And finally, calculating the required rotating speed n = ([ Delta ] H- [ Delta ] He). Times.Kj × 1000 of the air outlet machine according to the above, wherein Kj is a rotating speed coefficient. In this embodiment, during the operation of the air conditioner fan, the temperature T3 of the outdoor heat exchanger is detected, and if it is detected that T3> T4+5, the fan is immediately turned on without performing the above calculation process.
Example five:
as shown in fig. 8, according to still another embodiment of the present invention, there is provided a fan control apparatus 100 for an air conditioner, including: the memory 120, the processor 140, and the computer program stored in the memory 120 and capable of running on the processor 140, wherein when the computer program is executed by the processor 140, the steps of the fan control method of the air conditioner defined in any of the above embodiments are implemented, and the fan control device 100 of the air conditioner has all the beneficial effects of the fan control method of the air conditioner in any of the above embodiments, which are not described herein again.
Example six:
in still another embodiment of the present invention, there is provided an air conditioner including: the fan control device of the air conditioner and the external machine load defined by any one of the above technical schemes are connected with the fan control device of the air conditioner, the external machine load comprises a fan, and the fan control device can control the running state of the fan to determine whether the fan is started and the running rotating speed of the fan after the fan is started. The fan control apparatus is directed to a step of a fan control method of driving an air conditioner as defined in any one of the above technical solutions. The air conditioner has all the beneficial effects of the fan control method of the air conditioner and the control device of the air conditioner in any technical scheme, and the description is omitted.
Example seven:
an embodiment of the fourth aspect of the present invention provides a computer-readable storage medium, on which a fan control program of an air conditioner is stored, where the fan control program of the air conditioner, when executed by a processor, implements the steps of the fan control method of the air conditioner as defined in any one of the above technical solutions. All the beneficial effects of the control method of the air conditioner with any one of the above technical schemes are not described herein again.
In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are used broadly and should be construed to include, for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present specification, the description of "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The present invention has been described in terms of the preferred embodiment, and it is not intended to be limited to the embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A fan control method of an air conditioner is characterized by comprising the following steps:
acquiring the ambient temperature and determining the heat dissipation coefficient of the air conditioner according to the ambient temperature;
determining a corresponding first set fan rotating speed according to the heat dissipation coefficient setting;
controlling a fan of the air conditioner to operate at the first set fan rotating speed;
the step of determining the heat dissipation coefficient according to the ambient temperature specifically includes:
determining a power coefficient of the air conditioner;
and determining the heat dissipation coefficient according to the power coefficient and a set heat dissipation value.
2. The fan control method of an air conditioner according to claim 1, wherein the step of determining the power coefficient of the air conditioner specifically comprises:
acquiring the actual operating power of an air conditioner, and determining the actual energy efficiency ratio of the air conditioner;
and determining the power coefficient according to the actual operating power, the rated power and the actual energy efficiency ratio.
3. The fan control method of an air conditioner according to claim 2, wherein the step of determining the actual energy efficiency ratio of the air conditioner specifically comprises:
determining a set temperature interval according to the environment temperature;
and determining the actual energy efficiency ratio corresponding to the environment temperature of the air conditioner according to the corresponding relation between the set temperature interval and the energy efficiency ratio.
4. The fan control method of an air conditioner according to claim 3, wherein the step of determining the corresponding first set fan speed specifically comprises:
and calculating the first set fan rotating speed according to the heat dissipation coefficient, the set heat dissipation coefficient and the rotating speed coefficient.
5. The fan control method of an air conditioner according to claim 4, wherein the step of determining the corresponding first set fan speed further comprises:
and determining that the heat dissipation coefficient is greater than a set heat dissipation coefficient, and determining the first set fan rotating speed corresponding to the heat dissipation coefficient.
6. The fan control method of an air conditioner according to any one of claims 1 to 5, further comprising:
and after controlling the fan to operate at the first set fan rotating speed for a set time, returning to execute the steps of obtaining the environment temperature and determining the heat dissipation coefficient according to the environment temperature.
7. The fan control method of an air conditioner according to claim 6, further comprising:
acquiring the temperature of an outdoor heat exchanger of the air conditioner;
and if the ambient temperature is higher than the set temperature difference of the outdoor heat exchanger, controlling the fan to rotate at a second set fan rotating speed.
8. A fan control apparatus of an air conditioner, characterized in that, the fan control apparatus of the air conditioner comprises:
a memory, a processor, and a computer program stored on the memory and executable on the processor;
the computer program when executed by the processor implements the steps of the fan control method of the air conditioner as claimed in any one of claims 1 to 7.
9. An air conditioner, comprising:
the blower control device of an air conditioner as claimed in claim 8;
an outer unit load connected to a fan control device of the air conditioner, the fan control device being configured to drive the outer unit load to perform the steps of the fan control method of the air conditioner according to any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon an air conditioner fan control program, which when executed by a processor, implements the steps of the fan control method of an air conditioner according to any one of claims 1 to 7.
CN201911053575.9A 2019-10-31 2019-10-31 Fan control method and device of air conditioner, air conditioner and storage medium Active CN110744984B (en)

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