CN111023409A - High-temperature-prevention control method and system, storage medium and air conditioner - Google Patents
High-temperature-prevention control method and system, storage medium and air conditioner Download PDFInfo
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- CN111023409A CN111023409A CN201911167339.XA CN201911167339A CN111023409A CN 111023409 A CN111023409 A CN 111023409A CN 201911167339 A CN201911167339 A CN 201911167339A CN 111023409 A CN111023409 A CN 111023409A
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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
- F24F11/32—Responding to malfunctions or emergencies
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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
- F24F11/88—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
- F24F2140/00—Control inputs relating to system states
- F24F2140/40—Damper positions, e.g. open or closed
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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 high-temperature prevention control method, a high-temperature prevention control system, a storage medium and an air conditioner, wherein the high-temperature prevention control method comprises the following steps: acquiring temperature parameters of a compressor cylinder body and a current wind speed gear of an indoor fan; determining a temperature threshold corresponding to the current wind speed gear according to the temperature parameter and the current wind speed gear; and when the temperature parameter and the temperature threshold corresponding to the current wind speed gear meet a first preset condition for entering high temperature prevention control, controlling the indoor fan to reduce the wind speed. According to the high-temperature-prevention control method, when the temperature parameter of the compressor cylinder body and the temperature threshold corresponding to the current wind speed gear meet the first preset condition of entering high-temperature-prevention control, the indoor fan is controlled to reduce the wind speed, so that the load of the compressor is reduced, the compressor is prevented from triggering overload protection and being incapable of normally running, and the normal work of the compressor can be effectively guaranteed under the high-temperature environment.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a high-temperature prevention control method, a high-temperature prevention control system, a storage medium and an air conditioner.
Background
With the continuous improvement of the living standard of people, the air conditioner is widely applied.
At present, the air conditioner is when working under summer high temperature environment, and the air conditioner can respond with air-out speed's form to user's refrigeration demand, and refrigeration demand is higher, and then air-out speed is higher, but under high temperature environment, air-out speed is higher, means air condition compressor's work load is big more, and under high temperature environment, if the work load of compressor too big can lead to the high temperature protection, and trigger the high temperature protection and can lead to the air conditioner to shut down, unable operation.
Disclosure of Invention
The invention solves the problems that: when the air conditioner performs refrigeration operation in a high-temperature environment, how to prevent the compressor from causing the air conditioner to work abnormally due to triggering high-temperature protection is avoided.
In order to solve the above problems, the present invention provides a high temperature prevention control method, comprising the steps of:
acquiring temperature parameters of a compressor cylinder body and a current wind speed gear of an indoor fan;
determining a temperature threshold corresponding to the current wind speed gear according to the temperature parameter and the current wind speed gear;
and when the temperature parameter and the temperature threshold corresponding to the current wind speed gear meet a first preset condition for entering high temperature prevention control, controlling the indoor fan to reduce the wind speed.
Therefore, the working load of the compressor is measured and determined by detecting the temperature parameter of the cylinder body of the compressor in real time, the temperature threshold corresponding to the current wind speed gear is determined according to the temperature parameter and the current wind speed gear of the indoor fan, the working load of the compressor is judged by using the temperature threshold, when the detected temperature parameter and the temperature threshold corresponding to the current wind speed gear meet the first preset condition for entering high-temperature-prevention control, the working load of the compressor is indicated to be higher, and if the compressor continues to operate at the current load, the high-temperature protection of the compressor is possibly triggered; at the moment, the air speed is reduced by controlling the indoor fan, so that the load of the compressor is reduced, the compressor is prevented from triggering overload protection and cannot normally run, the normal work of the compressor can be effectively maintained under the high-temperature environment of the air conditioner, meanwhile, the service life of the compressor is prolonged, and the failure rate of the compressor is reduced.
Optionally, the temperature parameter is a top temperature of the compressor cylinder block, and a value range of a top temperature threshold of the compressor cylinder block is 110 ℃ to 125 ℃.
Like this, come to judge the work load of compressor as feedback signal with the top temperature of compressor cylinder body for the judged result is close the actual load size of compressor more, and the degree of accuracy is higher, thereby under the great condition of actual load of compressor, can control indoor fan in time and reduce the wind speed, in order to reach the purpose that reduces compressor operation load, avoids the compressor to lead to overload protection because of ambient temperature is too high to shut down.
Optionally, the temperature parameter is a bottom temperature of the compressor cylinder, and a value range of a bottom temperature threshold of the compressor cylinder is 105 ℃ to 120 ℃.
Like this, come to judge the work load of compressor as feedback signal with the bottom temperature of compressor cylinder body for the judged result is close the actual load size of compressor more, and the degree of accuracy is higher, thereby under the great condition of actual load of compressor, can control indoor fan in time and reduce the wind speed, in order to reach the purpose that reduces compressor operation load, avoids the compressor to lead to overload protection because of ambient temperature is too high to shut down.
Optionally, the controlling the indoor fan to reduce the wind speed specifically includes:
and controlling the indoor fan to adjust a wind speed gear in the wind speed reducing direction.
Like this, when detecting at every turn that the temperature parameter of compressor cylinder body and the temperature threshold value that current wind speed gear corresponds satisfy the first preset condition that gets into and prevent high temperature control, just with the wind speed gear of indoor fan to wind speed reduction direction adjustment one gear, reduce the wind speed of indoor fan through stepping down the wind speed gear of indoor fan, in order to avoid making the heat transfer effect of indoor heat exchanger sharply reduce because of the range of adjusting is too big, influence the refrigeration effect of air conditioner, thereby can reduce the influence that causes the heat transfer effect of indoor heat exchanger when adjusting the wind speed of indoor fan, in order to guarantee the refrigeration effect of air conditioner.
Optionally, the first preset condition is: the temperature parameter is higher than a temperature threshold corresponding to the current wind speed gear and lasts for a first preset time.
Like this, when the temperature parameter of compressor cylinder body is higher than the temperature threshold value that current wind speed gear corresponds, and last first preset duration, in time control indoor fan reduces the wind speed to prevent that the compressor from frequently triggering overload protection because of lasting high load operation, thereby can make the air conditioner keep operating condition under high temperature environment.
Optionally, after the step of controlling the indoor fan to reduce the wind speed, the method further includes the following steps:
re-acquiring temperature parameters and a current wind speed gear;
determining a temperature threshold corresponding to the reacquired current wind speed gear according to the reacquired temperature parameter and the reacquired current wind speed gear;
and when the temperature threshold corresponding to the reacquired temperature parameter and the reacquired current wind speed gear meets a second preset condition, controlling the indoor fan to increase the wind speed.
Therefore, after the air speed of the indoor fan is reduced, when the temperature parameters obtained again and the temperature threshold value corresponding to the current air speed gear obtained again meet the second preset condition, the air speed of the indoor fan is timely increased to meet the refrigeration requirement of a user.
Optionally, the controlling the indoor fan to increase the wind speed specifically includes the following steps:
controlling the indoor fan to adjust a wind speed gear in the wind speed increasing direction;
acquiring an adjusted current wind speed gear;
judging whether the adjusted current wind speed gear is the same as a target wind speed gear or not; the target wind speed gear is a set wind speed gear;
if the target wind speed is the same as the target wind speed, controlling the indoor fan to operate at the target wind speed gear; if not, acquiring the temperature parameter and the temperature threshold corresponding to the current wind speed gear again;
and when the temperature parameter obtained again and the temperature threshold value corresponding to the current wind speed gear still meet a second preset condition, continuously controlling the indoor fan to adjust a wind speed gear in the wind speed increasing direction, and simultaneously skipping to the step of obtaining the adjusted current wind speed gear.
Like this, when detecting that the temperature parameter of compressor cylinder body is less than the temperature threshold value that current wind speed gear corresponds at every turn, just adjust a gear with the wind speed gear of indoor fan to wind speed increase direction, promote the wind speed gear of indoor fan through stepping up, avoid making the wind speed gear after the regulation be higher than the target wind speed gear because of the range of adjusting is too big, and need reduce the wind speed gear once more, until adjusting the target wind speed gear, thereby can avoid producing unnecessary accommodation process, the precision and the efficiency of wind speed regulation have been improved.
Optionally, the second preset condition is: and the temperature parameter is lower than a temperature threshold corresponding to the current wind speed gear and lasts for a second preset time.
Therefore, after the air speed of the indoor fan is reduced, when the reacquired temperature parameter is lower than the temperature threshold value corresponding to the reacquired current air speed gear, the air speed of the indoor fan is timely increased, and the refrigeration requirement of a user is met under the condition that the compressor is not easy to trigger overload protection.
In order to solve the above problems, the present invention further provides a high temperature prevention control system, comprising:
the acquiring unit is used for acquiring the temperature parameter of the compressor cylinder and the current wind speed gear of the indoor fan;
the determining unit is used for determining a temperature threshold corresponding to the current wind speed gear according to the temperature parameter and the current wind speed gear;
and the control unit is used for controlling the indoor fan to reduce the wind speed when the temperature parameter and the temperature threshold corresponding to the current wind speed gear meet a first preset condition for entering high-temperature-prevention control.
A computer-readable storage medium storing a computer program which, when read and executed by a processor, implements the high temperature prevention control method of any one of the above.
In order to solve the above problem, the present invention further provides an air conditioner, including a computer readable storage medium storing a computer program and a processor, wherein the computer program is read by the processor and executed to implement any one of the above-mentioned high temperature prevention control methods.
The advantages of the high temperature control system, the computer readable storage medium and the air conditioner are the same as those of the high temperature control method compared with the prior art, and are not repeated herein.
Drawings
FIG. 1 is a flow chart of a method for controlling high temperature resistance according to an embodiment of the present invention;
FIG. 2 is a flow chart of another aspect of a high temperature protection control method in an embodiment of the present invention;
FIG. 3 is a flowchart of step S600 according to an embodiment of the present invention;
fig. 4 is a block diagram of the high temperature prevention control system according to the embodiment of the present invention.
Description of reference numerals:
10-acquisition unit, 20-determination unit, 30-control unit.
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.
Referring to fig. 1, an embodiment of the present invention provides a high temperature prevention control method, including the following steps:
s100, acquiring temperature parameters of a compressor cylinder body and a current wind speed gear of an indoor fan;
s200, determining a temperature threshold corresponding to the current wind speed gear according to the temperature parameters and the current wind speed gear;
s300, controlling the indoor fan to reduce the wind speed when the temperature parameter and the temperature threshold corresponding to the current wind speed gear meet a first preset condition of entering high temperature prevention control.
Generally, the indoor fan comprises a plurality of wind speed gears, such as a powerful wind gear, a high wind gear, a medium wind gear and a low wind gear, different temperature thresholds are correspondingly set for the different wind speed gears, the lower the wind speed gear is, the larger the temperature threshold is, that is, the temperature threshold corresponding to the wind speed gear is reduced along with the increase of the wind speed gear. The protection of the air conditioner during cooling operation in summer is usually caused by overload operation of the compressor, and is generally called as compressor overload protection, and in this case, the outdoor unit of the air conditioner is in a high ambient temperature, so the protection can also be called as high-temperature protection.
In the embodiment, the working load of the compressor is measured and determined by detecting the temperature parameter of the cylinder body of the compressor in real time, the temperature threshold corresponding to the current wind speed gear is determined according to the temperature parameter and the current wind speed gear of the indoor fan, the working load of the compressor is judged by using the temperature threshold, when the detected temperature parameter and the temperature threshold corresponding to the current wind speed gear meet a first preset condition for entering high-temperature-prevention control, the working load of the compressor is high, and if the compressor continues to operate at the current load, the high-temperature protection of the compressor is possibly triggered; at the moment, the air speed is reduced by controlling the indoor fan, so that the load of the compressor is reduced, the compressor is prevented from triggering overload protection and cannot normally run, the normal work of the compressor can be effectively maintained under the high-temperature environment of the air conditioner, meanwhile, the service life of the compressor is prolonged, and the failure rate of the compressor is reduced.
Optionally, the temperature parameter is a top temperature of the compressor cylinder, and a top temperature threshold of the compressor cylinder ranges from 110 ℃ to 125 ℃.
When the compressor is in an overload operation state, the internal temperature of the compressor cylinder body is much higher than that in normal operation, namely, the higher the internal temperature of the compressor cylinder body is, the greater the load borne by the compressor is, and conversely, the lower the internal temperature of the compressor cylinder body is, the smaller the load borne by the compressor is; the top temperature of the compressor cylinder body can reflect the internal temperature of the compressor cylinder body, so that the top temperature of the compressor cylinder body can be increased and decreased along with the increase of the internal temperature of the cylinder body, and the overload running state of the compressor can be intuitively reflected. The top temperature of the compressor cylinder body refers to the temperature of the outer surface of the top of the compressor cylinder body, namely the top temperature of the compressor cylinder body can be detected by arranging a temperature sensor on the outer surface of the top of the compressor cylinder body; and when the temperature parameter is the top temperature of the compressor cylinder body, the temperature threshold corresponding to the wind speed gear of the indoor fan is the top temperature threshold of the compressor cylinder body. The top temperature threshold of the compressor cylinder is a parameter set according to the working performance of the compressor and the wind speed gear of the indoor fan. The top temperature thresholds of the compressor cylinder bodies corresponding to different air conditioner models are different, the top temperature threshold of the compressor cylinder body is not too low, otherwise frequent high-temperature protection of an air conditioning system is easily caused, and the normal refrigeration effect is influenced; the temperature threshold value at the top of the compressor cylinder body is not too high, otherwise, the air conditioning system is easily prevented from high temperature untimely, and the air conditioner runs under ultrahigh load; therefore, the value range of the top temperature threshold of the compressor cylinder body is preferably 110 ℃ to 125 ℃.
In this embodiment, the top temperature of using the compressor cylinder body judges the work load of compressor as feedback signal for the judged result is close the actual load size of compressor more, and the degree of accuracy is higher, thereby under the great condition of actual load of compressor, can control indoor fan in time and reduce the wind speed, in order to reach the purpose that reduces compressor running load, avoids the compressor to lead to overload protection because of ambient temperature is too high to shut down.
Optionally, the temperature parameter is a bottom temperature of the compressor cylinder, and a value of a bottom temperature threshold of the compressor cylinder ranges from 105 ℃ to 120 ℃.
Besides the top temperature of the compressor cylinder body, the bottom temperature of the compressor cylinder body can also reflect the internal temperature of the compressor cylinder body, namely the bottom temperature of the compressor cylinder body can also be increased and decreased along with the increase of the internal temperature of the cylinder body, so that the overload operation state of the compressor can be intuitively reflected. The bottom temperature of the compressor cylinder body refers to the outer surface temperature of the bottom of the compressor cylinder body, namely the bottom temperature of the compressor cylinder body can be detected by arranging a temperature sensor on the outer surface of the bottom of the compressor cylinder body; and when the temperature parameter is the bottom temperature of the compressor cylinder body, the temperature threshold corresponding to the wind speed gear of the indoor fan is the bottom temperature threshold of the compressor cylinder body. The bottom temperature threshold of the compressor cylinder body is a parameter set according to the working performance of the compressor and the wind speed gear of the indoor fan. The bottom temperature thresholds of the compressor cylinder bodies corresponding to different air conditioner models are different, the bottom temperature threshold of the compressor cylinder body is not too low, otherwise frequent high-temperature protection of an air conditioning system is easily caused, and the normal refrigeration effect is influenced; the bottom temperature threshold of the compressor cylinder body is not too high, otherwise, the air conditioning system is easily prevented from high temperature untimely, and the air conditioner runs under ultrahigh load; therefore, the bottom temperature threshold of the compressor cylinder is preferably 105 ℃ to 120 ℃ in the embodiment.
In this embodiment, the bottom temperature that uses the compressor cylinder body is judged the work load of compressor as feedback signal for the judged result is close the actual load size of compressor more, and the degree of accuracy is higher, thereby under the great condition of actual load of compressor, can control indoor fan in time and reduce the wind speed, in order to reach the purpose that reduces compressor running load, avoids the compressor to lead to overload protection because of ambient temperature is too high to shut down.
Optionally, step S300 specifically includes: and when the temperature parameter and the temperature threshold value corresponding to the current wind speed gear meet a first preset condition for entering high temperature prevention control, controlling the indoor fan to adjust a wind speed gear in the wind speed reduction direction.
When the wind speed of the indoor fan is reduced, the wind speed can be adjusted through one gear by one gear, and the wind speed can also be adjusted through a plurality of gears. The example is given by taking the case that the wind speed gears of the indoor fan include a first wind gear, a second wind gear and a third wind gear, wherein the wind speeds of the first wind gear, the second wind gear and the third wind gear are sequentially reduced. The adjustment of the gears one by one means that the wind speed is reduced in a mode of reducing from a first gear to a second gear and reducing from the second gear to a third gear; the adjustment through a plurality of gears means that the wind speed is reduced in a mode of directly reducing from the first gear to the third gear; in the present embodiment, the wind speed is preferably reduced by gear-by-gear adjustment.
In this embodiment, when detecting that the temperature parameter of the compressor cylinder body and the temperature threshold value that current wind speed gear corresponds satisfy the first preset condition that gets into and prevent high temperature control at every turn, just adjust a gear with the wind speed gear of indoor fan to wind speed reduction direction, reduce the wind speed of indoor fan through stepping down the wind speed gear of indoor fan, so as to avoid making the heat transfer effect of indoor heat exchanger sharply reduce because of the range of adjusting is too big, influence the refrigeration effect of air conditioner, so as to reduce the influence that causes the heat transfer effect of indoor heat exchanger when adjusting the wind speed of indoor fan, in order to guarantee the refrigeration effect of air conditioner.
Optionally, the first preset condition is: the temperature parameter is higher than a temperature threshold corresponding to the current wind speed gear and lasts for a first preset time.
The working load of the compressor is measured and determined through the top temperature or the bottom temperature of the compressor cylinder body, when the top temperature of the compressor cylinder body is higher than a top temperature threshold corresponding to a current wind speed gear, or when the bottom temperature of the compressor cylinder body is higher than a bottom temperature threshold corresponding to the current wind speed gear, the working load of the compressor is high, and if the compressor continues to operate at the current load, overload protection may be triggered. Specifically, when the temperature parameter is the top temperature of the compressor cylinder, the first preset condition is as follows: the top temperature of the compressor cylinder body is higher than a top temperature threshold corresponding to the current wind speed gear and lasts for a first preset time; when the temperature parameter is the bottom temperature of the compressor cylinder body, the first preset condition is as follows: the bottom temperature of the compressor cylinder body is higher than a bottom temperature threshold corresponding to the current wind speed gear and lasts for a first preset time. Because the temperature detection value is susceptible to the influence of temperature fluctuation caused by external conditions, the control is not accurate, and therefore the first preset time is set to increase the stability of high-temperature-prevention control.
In this embodiment, when the temperature parameter of the compressor is higher than the temperature threshold corresponding to the current wind speed gear and lasts for the first preset time duration, the indoor fan is timely controlled to reduce the wind speed, so as to prevent the compressor from frequently triggering overload protection due to continuous high-load operation, and thus the air conditioner can be kept in a working state in a high-temperature environment.
Taking the example that the wind speed gears of the indoor fan include a first wind gear, a second wind gear and a third wind gear as an example, wherein the wind speeds of the first wind gear, the second wind gear and the third wind gear are sequentially reduced, the top temperature threshold corresponding to the first wind gear is a first top temperature threshold, the top temperature threshold corresponding to the second wind gear is a second top temperature threshold, and the first top temperature threshold may be 110 ℃ to 115 ℃; the second overhead temperature threshold may be 115 ℃ to 125 ℃; the bottom temperature threshold corresponding to the first wind shield is a first bottom temperature threshold, the bottom temperature threshold corresponding to the second wind shield is a second bottom temperature threshold, and the first bottom temperature threshold can be 100-105 ℃; the second bottom temperature threshold may be 105 ℃ to 110 ℃. Taking the temperature parameter as the top temperature of the compressor cylinder as an example, if the current wind speed gear of the indoor fan is a first wind gear, controlling the indoor fan to be reduced from the first wind gear to a second wind gear when the top temperature of the compressor cylinder is detected to be higher than a first top temperature threshold; and if the current wind speed gear of the indoor fan is the second wind gear, controlling the indoor fan to be reduced from the second wind gear to the third wind gear when the fact that the top temperature of the compressor cylinder body is higher than the second top temperature threshold value is detected. It should be noted that, if the current wind speed gear of the indoor fan is the second wind gear, it may be understood that the current wind speed gear when the air conditioner satisfies the first preset condition for the first time is the second wind gear, or it may be understood that after the air conditioner satisfies the first preset condition and is adjusted from the first wind gear to the second wind gear, the current wind speed gear becomes the second wind gear, that is, after the wind speed gear of the indoor fan is adjusted from the first wind gear to the second wind gear, if the top temperature of the compressor cylinder is still higher than the second top temperature threshold value and lasts for the first preset time, the indoor fan is controlled to decrease by one wind speed gear again, and the second wind gear is decreased to the third wind gear. When the wind speed gear of the indoor fan is reduced to the lowest wind speed gear (such as the third wind gear in this embodiment), the control of reducing the wind speed is no longer performed.
Optionally, as shown in fig. 2, after step S300, the following steps are further included:
s400, re-acquiring temperature parameters and a current wind speed gear;
s500, according to the re-acquired temperature parameters and the re-acquired current wind speed gear, determining a temperature threshold corresponding to the re-acquired current wind speed gear;
s600, when the temperature parameter obtained again and the temperature threshold corresponding to the current wind speed gear obtained again meet a second preset condition, controlling the indoor fan to increase the wind speed.
After the wind speed gear of the indoor fan is reduced, the load of the compressor is reduced, but at the same time, the heat exchange effect of the evaporator is relatively reduced, that is, the refrigerating capacity of the air conditioner is also reduced, in order to meet the refrigerating requirement of a user, the wind speed of the indoor fan should be timely increased under the condition that the compressor can meet normal operation so as to meet the refrigerating requirement of the user, and therefore, the steps S400 to S600 are added after the step S300.
In this embodiment, after the air speed of the indoor fan is reduced, when the temperature parameter obtained again and the temperature threshold corresponding to the current air speed gear obtained again satisfy the second preset condition, the air speed of the indoor fan is increased in time to satisfy the refrigeration requirement of the user.
Optionally, as shown in fig. 3, step S600 specifically includes the following steps:
s610, controlling an indoor fan to adjust a wind speed gear in the wind speed increasing direction;
s620, acquiring the adjusted current wind speed gear;
s630, judging whether the adjusted current wind speed gear is the same as the target wind speed gear; the target wind speed gear is a set wind speed gear;
s640, if the wind speed is the same as the target wind speed, controlling the indoor fan to operate at a target wind speed gear; if not, acquiring the temperature parameter and the temperature threshold corresponding to the current wind speed gear again;
s650, when the temperature parameter obtained again and the temperature threshold value corresponding to the current wind speed gear still meet a second preset condition, continuing to control the indoor fan to adjust a wind speed gear in the wind speed increasing direction, and meanwhile, skipping to the step S620.
The target wind speed gear refers to a wind speed gear set by a user, when the wind speed of the indoor fan is reduced, the wind speed gear is adjusted towards the wind speed reduction direction from the target wind speed gear, and when the wind speed of the indoor fan is increased, the wind speed is increased to the target wind speed gear from the current wind speed gear. When the wind speed of the indoor fan is increased, the wind speed can be adjusted one by one, namely the wind speed is increased in a mode of increasing from a third wind gear to a second wind gear and increasing from the second wind gear to a first wind gear, and the control of increasing the wind speed is stopped until the current wind speed gear is the same as the target wind speed gear; the wind speed can be adjusted through a plurality of gears, namely, the wind speed is increased in a mode of directly increasing from a third gear to a first gear, and the control of increasing the wind speed is stopped until the current wind speed gear is the same as the target wind speed gear; in the present embodiment, the wind speed is preferably increased by gear-by-gear adjustment.
In this embodiment, when it is detected that the temperature parameter of the compressor cylinder body and the temperature threshold corresponding to the current wind speed gear satisfy the second preset condition each time, the wind speed gear of the indoor fan is adjusted by one gear in the wind speed increasing direction, the wind speed gear of the indoor fan is increased by increasing the wind speed gear of the indoor fan by one gear, and the condition that the adjusted wind speed gear is higher than the target wind speed gear due to the too large adjusting amplitude is avoided, and the wind speed gear needs to be reduced again until the target wind speed gear is adjusted is avoided, so that the unnecessary adjusting process can be avoided, and the accuracy and the efficiency of the wind speed adjustment are improved.
Optionally, the second preset condition is: and the temperature parameter is lower than the temperature threshold corresponding to the current wind speed gear and lasts for a second preset time.
If the temperature parameter is lower than the temperature threshold corresponding to the current wind speed gear, the working load of the compressor is low, and at the moment, the overload protection of the compressor is not easily triggered by increasing the wind speed of the indoor unit. Specifically, when the temperature parameter is the top temperature of the compressor cylinder, the second preset condition is as follows: the top temperature of the compressor cylinder body is lower than a top temperature threshold corresponding to the current wind speed gear and lasts for a second preset time; when the temperature parameter is the bottom temperature of the compressor cylinder body, the second preset condition is as follows: and the bottom temperature of the compressor cylinder body is lower than the bottom temperature threshold corresponding to the current wind speed gear and lasts for a second preset time. Because the temperature detection value is susceptible to the influence of temperature fluctuation caused by external conditions, the control is not accurate, and therefore the second preset time is set to further increase the stability of the high-temperature prevention control.
In this embodiment, after the wind speed of the indoor fan is reduced, when the reacquired temperature parameter is lower than the temperature threshold corresponding to the reacquired current wind speed gear, the wind speed of the indoor fan is timely increased, so as to ensure that the refrigeration requirement of the user is met under the condition that the compressor is not easy to trigger the overload protection.
Optionally, the first preset time period is the same as the second preset time period, and the value range is 2 seconds to 4 seconds.
The first preset time and the second preset time are not suitable to be set too long, otherwise, the phenomenon of untimely protection can occur, and the compressor is easily overloaded and shut down due to instant overload operation; therefore, in this embodiment, it is preferable that the first preset time period and the second preset time period are the same and both set to be 2 seconds to 4 seconds. In other embodiments of this embodiment, the second preset time period may be longer than the first preset time period, so as to ensure that the wind level of the indoor fan is raised when the compressor is in the low load state.
In another embodiment of the present invention, a computer-readable storage medium is provided, which stores instructions that when loaded and executed by a processor implement the method for controlling high temperature protection as described in any one of the above.
The technical solution of the embodiment of the present invention substantially or partly contributes to the prior art, or all or part of the technical solution may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the method according to the embodiment of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
The high-temperature-prevention control method is executed, so that when the detected temperature parameter of the compressor cylinder body and the temperature threshold value corresponding to the current wind speed gear meet the first preset condition for entering high-temperature-prevention control, the wind speed is reduced through the indoor fan, the load of the compressor is reduced, the compressor is prevented from being triggered to be overloaded and protected from normal operation, and the normal work of the compressor can be effectively maintained under the high-temperature environment of the air conditioner.
Referring to fig. 4, in another embodiment of the present invention, a high temperature prevention control system is provided, including:
the acquiring unit 10 is used for acquiring the temperature parameter of the compressor cylinder and the current wind speed gear of the indoor fan;
the determining unit 20 is configured to determine a temperature threshold corresponding to a current wind speed gear according to the temperature parameter and the current wind speed gear;
and the control unit 30 is used for controlling the indoor fan to reduce the wind speed when the temperature parameter and the temperature threshold corresponding to the current wind speed gear meet a first preset condition of entering high-temperature-prevention control.
In this embodiment, the temperature parameter of the compressor cylinder is obtained in real time through the obtaining unit 10, the obtained temperature parameter is transmitted to the control unit 30, the determining unit 20 determines the temperature threshold corresponding to the current wind speed gear according to the temperature parameter and the current wind speed gear of the indoor fan, and transmits the temperature threshold to the control unit 30, the control unit 30 analyzes and processes the temperature parameter and the temperature threshold corresponding to the current wind speed gear, when the control unit 30 analyzes that the temperature parameter and the temperature threshold corresponding to the current wind speed gear meet a first preset condition for entering high temperature prevention control, the indoor fan is controlled to reduce the wind speed, so that the load of the compressor is reduced, the compressor is prevented from being triggered to be overloaded and cannot operate normally, and the air conditioner is effectively ensured to maintain the normal operation of the compressor under a high temperature environment.
In another embodiment of the present invention, an air conditioner is provided, which includes a computer readable storage medium storing a computer program and a processor, wherein the computer program is read by the processor and when the computer program is executed by the processor, the method for controlling high temperature is implemented as any one of the above methods.
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 high temperature prevention control method is characterized by comprising the following steps:
acquiring temperature parameters of a compressor cylinder body and a current wind speed gear of an indoor fan;
determining a temperature threshold corresponding to the current wind speed gear according to the temperature parameter and the current wind speed gear;
and when the temperature parameter and the temperature threshold corresponding to the current wind speed gear meet a first preset condition for entering high temperature prevention control, controlling the indoor fan to reduce the wind speed.
2. The high temperature prevention control method of claim 1, wherein the temperature parameter is a top temperature of the compressor cylinder, and the top temperature threshold of the compressor cylinder ranges from 110 ℃ to 125 ℃.
3. The high temperature prevention control method according to claim 1, wherein the temperature parameter is a bottom temperature of the compressor cylinder, and a bottom temperature threshold of the compressor cylinder is in a range of 105 ℃ to 120 ℃.
4. The high temperature prevention control method according to claim 1, wherein the controlling the indoor fan to reduce the wind speed specifically comprises:
and controlling the indoor fan to adjust a wind speed gear in the wind speed reducing direction.
5. The high temperature prevention control method according to any one of claims 1 to 4, wherein the first preset condition is: the temperature parameter is higher than a temperature threshold corresponding to the current wind speed gear and lasts for a first preset time.
6. The high temperature prevention control method of claim 1, further comprising, after the step of controlling the indoor fan to reduce the wind speed, the steps of:
re-acquiring temperature parameters and a current wind speed gear;
determining a temperature threshold corresponding to the reacquired current wind speed gear according to the reacquired temperature parameter and the reacquired current wind speed gear;
and when the temperature threshold corresponding to the reacquired temperature parameter and the reacquired current wind speed gear meets a second preset condition, controlling the indoor fan to increase the wind speed.
7. The high temperature prevention control method according to claim 6, wherein the controlling the indoor fan to increase the wind speed specifically comprises the steps of:
controlling the indoor fan to adjust a wind speed gear in the wind speed increasing direction;
acquiring an adjusted current wind speed gear;
judging whether the adjusted current wind speed gear is the same as a target wind speed gear or not; the target wind speed gear is a set wind speed gear;
if the target wind speed is the same as the target wind speed, controlling the indoor fan to operate at the target wind speed gear; if not, acquiring the temperature parameter and the temperature threshold corresponding to the current wind speed gear again;
and when the temperature parameter obtained again and the temperature threshold value corresponding to the current wind speed gear still meet a second preset condition, continuously controlling the indoor fan to adjust a wind speed gear in the wind speed increasing direction, and simultaneously skipping to the step of obtaining the adjusted current wind speed gear.
8. The high temperature prevention control method according to claim 6 or 7, wherein the second preset condition is: and the temperature parameter is lower than a temperature threshold corresponding to the current wind speed gear and lasts for a second preset time.
9. A high temperature protection control system, comprising: :
the device comprises an acquisition unit (10) for acquiring the temperature parameter of a compressor cylinder and the current wind speed gear of an indoor fan;
a determining unit (20) for determining a temperature threshold corresponding to the current wind speed gear according to the temperature parameter and the current wind speed gear;
and the control unit (30) is used for controlling the indoor fan to reduce the wind speed when the temperature parameter and the temperature threshold corresponding to the current wind speed gear meet a first preset condition of entering high-temperature-prevention control.
10. A computer-readable storage medium, characterized in that it stores a computer program which, when read and executed by a processor, implements the high temperature prevention control method according to any one of claims 1 to 8.
11. 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 high temperature prevention control method according to any one of claims 1 to 8.
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