CN110131832B - Control method and device for high-temperature protection of air conditioner - Google Patents
Control method and device for high-temperature protection of air conditioner Download PDFInfo
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- CN110131832B CN110131832B CN201910388653.4A CN201910388653A CN110131832B CN 110131832 B CN110131832 B CN 110131832B CN 201910388653 A CN201910388653 A CN 201910388653A CN 110131832 B CN110131832 B CN 110131832B
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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Abstract
The invention provides a control method and a device for high-temperature protection of an air conditioner, wherein the control method comprises the following steps: acquiring the temperature of an inner disc of the air conditioner; judging whether the temperature of the inner disc is greater than a second temperature threshold value or not; if the temperature is greater than the second temperature threshold value, stopping an external fan of the air conditioner; acquiring change data of the inner disc temperature of the air conditioner, and judging whether the inner disc temperature is in an ascending trend or not according to the change data; and if the air conditioner is in the ascending trend, the initial wind gear of the indoor fan of the air conditioner is shifted up. Like this, through the adjustment to indoor fan windscreen, can be so that the inner disc temperature in time descends, solved the too high temperature problem that the inner disc temperature in time descends and brings to be convenient for with the inner disc temperature and the system operating pressure control of air conditioner in reasonable scope, make the air conditioner normal operating, improve user's result of use and comfort level.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method for high-temperature protection of an air conditioner.
Background
In order to prevent the air conditioner from operating under too high pressure in the heating mode, the air conditioner generally has the following high-temperature protection logic: when the temperature of the inner disc is higher than a certain temperature, the outer fan is controlled to stop, and the temperature of the inner disc begins to decrease after the outer fan stops; when the temperature of the inner disc is reduced to a certain temperature, the outer fan is restarted to start heating; the circulation is carried out, so that the temperature of the inner disc of the air conditioner is controlled within a reasonable range.
However, this protection logic is only suitable for a conventional air conditioning unit, and for some existing air conditioners, after the external fan is stopped, the temperature of the inner panel does not drop in time, but still rises continuously for a period of time, which is easy to cause the situation of over-high temperature of the inner panel, and brings inconvenience to the normal use of the air conditioner.
Disclosure of Invention
The invention solves the problem that the temperature of the inner disc cannot be timely reduced to cause overhigh temperature of the inner disc after the external fan of the existing air conditioner is stopped.
In order to solve the above problems, the present invention firstly provides a control method for preventing high temperature protection of an air conditioner, which comprises:
acquiring the temperature of an inner disc of the air conditioner;
judging whether the temperature of the inner disc is greater than a second temperature threshold value or not;
if the temperature is greater than the second temperature threshold value, stopping an external fan of the air conditioner;
acquiring change data of the inner disc temperature of the air conditioner, and judging whether the inner disc temperature is in an ascending trend or not according to the change data;
and if the air conditioner is in the ascending trend, the initial wind gear of the indoor fan of the air conditioner is shifted up.
Like this, through the adjustment to indoor fan windscreen, can be so that the inner disc temperature in time descends, solved the too high temperature problem that the inner disc temperature in time descends and brings to be convenient for with the inner disc temperature and the system operating pressure control of air conditioner in reasonable scope, make the air conditioner normal operating, improve user's result of use and comfort level.
Optionally, the obtaining of the change data of the inner panel temperature of the air conditioner and the determining, according to the change data, whether the inner panel temperature is an ascending trend specifically include:
acquiring the temperature of the inner disc at intervals of first time;
and judging whether the temperature of the inner disc obtained for N times is higher than the temperature of the inner disc obtained last time.
Whether the rising is continuously performed for N times is judged, so that the misjudgment caused by the situation is eliminated, and the judgment accuracy is improved.
Optionally, the value range of the first time interval is 0.5-2.5 s. By taking the value range as the first time interval, on one hand, the continuous monitoring of the temperature of the inner disc can be avoided, thereby saving the occupation of system resources; on the other hand, the change trend of the inner disc temperature can be measured in time, so that the subsequent timely adjustment of the inner disc temperature is facilitated, and the over-high inner disc temperature caused by untimely adjustment is avoided.
Optionally, the value range of N is 2-7. The value range can reduce the misjudgment caused by too few continuous judgment times on one hand, so that the subsequent steps can be started in time for cooling; on the other hand, the judgment failure caused by excessive judgment times can be reduced, so that the problems of untimely cooling and overhigh temperature of the inner disc caused by untimely judgment can be avoided.
Optionally, after the initial wind gear of the indoor fan of the air conditioner is shifted up, the method further includes:
re-acquiring the change data of the inner disc temperature, and judging whether the inner disc temperature is in an ascending trend or a descending trend according to the change data;
if the current wind shield is the highest wind shield, judging whether the current wind shield of the indoor fan is the ascending trend;
if the wind gear is the highest wind gear, controlling the indoor fan to keep the current wind gear;
if the current wind gear is not the highest wind gear, the current wind gear of the indoor fan is shifted up, the change data of the inner disc temperature is obtained again, and the inner disc temperature is judged to be in an ascending trend or a descending trend according to the change data;
and if the trend is a descending trend, controlling the indoor fan to keep the current wind gear.
Therefore, through re-judgment, circulation is formed, and the temperature of the inner disc is changed from an ascending trend to a descending trend through superposition of the multiple upward-adjusting wind gears, so that the temperature is timely reduced.
Optionally, the re-acquiring the change data of the inner disc temperature, and determining whether the inner disc temperature is an ascending trend or a descending trend according to the change data specifically includes:
acquiring the temperature of the inner disc at intervals of first time;
and judging whether the inner disc temperature obtained for N times continuously is higher than the inner disc temperature obtained for the last time or whether the inner disc temperature obtained for N times continuously is lower than the inner disc temperature obtained for the last time.
By increasing the judgment of the descending trend of the inner disc temperature, when the inner disc temperature reaches the descending trend, the judgment result can be directly obtained, so that the inner disc temperature does not need to be obtained according to the first time interval and is judged, and the system resources are saved.
Optionally, after controlling the indoor fan to maintain the current wind gear, the method further includes:
judging whether the temperature of the inner disc is smaller than a first temperature threshold value, wherein the first temperature threshold value is smaller than the second temperature threshold value;
and if the temperature is smaller than the first temperature threshold value, starting the outer fan.
The cycle is repeated in such a way that the temperature of the inner disc is controlled between the first temperature threshold and the second temperature threshold, so that the temperature of the inner disc and the operation pressure of the system are controlled within a reasonable range.
Optionally, after starting the outer fan, the method further includes:
judging whether the temperature of the inner disc is greater than the second temperature threshold value for the first time after the compressor is started;
if the first time is greater than the second temperature threshold, reducing the current wind level of the indoor fan to the initial wind level;
and if the current wind gear is not larger than the second temperature threshold for the first time, controlling the indoor fan to operate according to the current wind gear.
Therefore, the temperature of the inner disc is triggered for the first time after the compressor is started to be greater than the second temperature threshold value, so that the outer fan is stopped to cool, even if the compressor is unstable in operation, the air damper of the indoor fan is improved, the noise is increased, and the user experience degree is reduced; and the indoor fan can not be kept in a wind shield lifting state in subsequent operation, so that the influence of unstable operation after the compressor is started on the application of high-temperature control is avoided.
Optionally, after controlling the indoor fan to maintain the current wind gear, the method further includes:
judging whether the temperature of the inner disc is greater than a third temperature threshold value, wherein the third temperature threshold value is greater than the second temperature threshold value;
and if the temperature is greater than the third temperature threshold value, controlling the compressor of the air conditioner to stop.
And after the temperature of the inner disc is higher than the third temperature threshold value, the compressor is directly stopped, so that the damage of the compressor caused by overhigh pressure of an air conditioning system is avoided.
Optionally, after controlling the compressor of the air conditioner to stop, the method further includes:
recording a down time of the compressor;
judging whether the temperature of the inner disc is smaller than a first temperature threshold value or not and the shutdown time is longer than the shutdown protection time of the compressor;
if so, starting the compressor and the outer fan, and controlling the indoor fan to operate according to the initial wind gear.
Therefore, the compressor and the outer fan are started at the first temperature threshold value through judging the temperature of the inner disc and the shutdown time, so that circulation is performed repeatedly, and the temperature of the inner disc and the operation pressure of the system are controlled within a reasonable range.
Secondly, a computer readable storage medium is provided, which stores instructions, and when the instructions are loaded and executed by a processor, the control method for preventing the high temperature protection of the air conditioner is realized.
Like this, through the adjustment to indoor fan windscreen, can be so that the inner disc temperature in time descends, solved the too high temperature problem that the inner disc temperature in time descends and brings to be convenient for with the inner disc temperature and the system operating pressure control of air conditioner in reasonable scope, make the air conditioner normal operating, improve user's result of use and comfort level.
The control device for preventing the high temperature protection of the air conditioner comprises a processor and a memory, wherein the memory stores a control program, and the control program realizes the control method for preventing the high temperature protection of the air conditioner when being executed by the processor.
Like this, through the adjustment to indoor fan windscreen, can be so that the inner disc temperature in time descends, solved the too high temperature problem that the inner disc temperature in time descends and brings to be convenient for with the inner disc temperature and the system operating pressure control of air conditioner in reasonable scope, make the air conditioner normal operating, improve user's result of use and comfort level.
Drawings
FIG. 1 is a first flowchart of a control method for protecting an air conditioner against high temperature;
FIG. 2 is a first flowchart of the control method steps 400 for high temperature protection of an air conditioner;
FIG. 3 is a flowchart II of the control method steps 400 for high temperature protection of an air conditioner;
FIG. 4 is a second flowchart of a control method for high temperature protection of an air conditioner;
FIG. 5 is a first flowchart of the control method steps 600 for high temperature protection of an air conditioner;
FIG. 6 is a flowchart II of the control method steps 400 for high temperature protection of an air conditioner;
FIG. 7 is a flow chart of a control method for high temperature protection of an air conditioner;
FIG. 8 is a fourth flowchart of a control method for high temperature protection of an air conditioner;
FIG. 9 is a fifth flowchart of a control method for high temperature protection of an air conditioner;
fig. 10 is a sixth flowchart of a control method for high temperature protection of an air conditioner.
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.
As shown in fig. 1, it is a first flowchart of a control method for preventing high temperature protection of an air conditioner; the control method for the high-temperature protection of the air conditioner comprises the following steps:
when the air conditioner starts heating operation, the inner disc temperature of the air conditioner and the operation pressure of the whole system can be synchronously increased, and if the inner disc temperature of the air conditioner and the operation pressure of the whole system are overhigh, the compressor and other devices in the air conditioner can be damaged. In order to prevent the situation, a second temperature threshold is set (the inner disc temperature of the air conditioner can reflect the operation pressure of the whole system to a certain extent), if the inner disc temperature is lower than the second temperature threshold, the operation of the air conditioner at the moment is stable, and if the inner disc temperature is higher than the second temperature threshold, the compressor and other equipment in the air conditioner can be damaged if the temperature cannot be timely reduced.
at the moment, the outer fan is stopped, the rising trend of the temperature of the inner disc can be reduced or reduced, and therefore the temperature inside the air conditioner can be conveniently reduced.
the rising trend of the temperature of the inner disc can be reduced only by stopping the outer fan; however, due to other conditions, the temperature of the inner disc may not start to decrease, so that it is necessary to determine whether the temperature of the inner disc is still in an increasing trend for subsequent operations.
And 500, if the trend is ascending, the initial wind gear of the indoor fan of the air conditioner is shifted up.
It should be noted that, the indoor fan generally has a plurality of wind gears, and the wind speed of the indoor fan is higher and higher from the low wind gear to the high wind gear, where the up-shift position is to adjust the wind gear of the indoor fan to a higher wind gear.
After the initial wind gear is adjusted upwards, the speed or the total amount of outdoor cold air entering the air conditioner can be increased, so that the influence on the temperature of an inner disc of the air conditioner is increased, the temperature of the inner disc has an ascending trend and is changed into a descending trend, and the purpose of cooling is achieved.
Like this, through the adjustment to indoor fan windscreen, can be so that the inner disc temperature in time descends, solved the too high temperature problem that the inner disc temperature in time descends and brings to be convenient for with the inner disc temperature and the system operating pressure control of air conditioner in reasonable scope, make the air conditioner normal operating, improve user's result of use and comfort level.
Optionally, the gear of transferring upward is a gear of transferring upward, like this, transfers upward the wind gear of indoor fan one by one gear to prevent the wind gear from transferring upward too high noise too big scheduling problem that causes.
Optionally, as shown in fig. 2, the step 400 specifically includes:
here, this step means that the temperature of the inner panel of the air conditioner is monitored once every first time interval is reached by counting the time from the stop of the outer fan.
Optionally, the value range of the first time interval is 0.5-2.0 s. By taking the value range as the first time interval, on one hand, the continuous monitoring of the temperature of the inner disc can be avoided, thereby saving the occupation of system resources; on the other hand, the change trend of the inner disc temperature can be measured in time, so that the subsequent timely adjustment of the inner disc temperature is facilitated, and the over-high inner disc temperature caused by untimely adjustment is avoided.
And 420, judging whether the inner disc temperature obtained for N times is higher than the inner disc temperature obtained last time.
The inner disc temperature obtained for N times is higher than the inner disc temperature obtained last time, namely the inner disc temperature is in an ascending trend.
After the outer fan stops, due to the design reason of the air conditioner, the temperature of the inner disc does not stop rising rapidly, the situation that the temperature rises once or many times and then begins to fall may occur, and whether the temperature rises for N times continuously is judged, so that misjudgment caused by the situation is eliminated, and the judgment accuracy is improved.
Optionally, the value range of N is 2-7. The value range can reduce the misjudgment caused by too few continuous judgment times on one hand, so that the subsequent steps can be started in time for cooling; on the other hand, the judgment failure caused by excessive judgment times can be reduced, so that the problems of untimely cooling and overhigh temperature of the inner disc caused by untimely judgment can be avoided.
Optionally, as shown in fig. 3, the step 400 specifically includes:
optionally, the value range of the second time interval is 3-10 s. By taking the value range as the second time interval, the inaccurate monitoring of the inner disk temperature caused by the excessively short time interval can be avoided (the inner disk temperature can possibly appear, and the outer fan rises and then falls in a short time after being stopped), and the change trend of the inner disk temperature can be measured in time, so that the problem that the hard disk temperature is excessively high when the inner disk temperature is not adjusted in time due to the excessively long time interval is avoided.
The temperature of the inner disc is higher than the temperature of all the inner discs obtained last time, namely the temperature of the inner disc is in an ascending trend.
Therefore, compared with continuous N times of judgment, the change trend of the inner disc temperature can be obtained through one-time judgment, so that the subsequent steps can be executed in time, and the inner disc temperature can be reduced in time.
Optionally, as shown in fig. 4, after the step 500, the method further includes:
the initial wind gear of the indoor fan is shifted up, so that the speed or the total amount of outdoor cold air entering the air conditioner can be increased, and the influence on the temperature of an inner disc of the air conditioner is increased; therefore, the trend of the temperature of the inner disc needs to be obtained again for judgment.
the air damper of the indoor fan is adjusted upwards to increase the speed or the total amount of outdoor cold air entering the air conditioner, so that the influence on the temperature of the inner disc of the air conditioner is increased, when the indoor air damper is the highest air damper, the influence on the temperature of the inner disc of the air conditioner is maximized, under the condition, the indoor air damper cannot be improved again, the change trend of the temperature of the inner disc does not need to be judged, and the current air damper can be directly kept.
and if the trend is a descending trend, controlling the indoor fan to keep the current wind gear.
If the wind speed is in the rising trend, the influence on the temperature of the inner disc of the air conditioner is insufficient after the initial wind gear is adjusted upwards, and the wind speed needs to be adjusted upwards again so as to change the rising trend into the falling trend. If the wind gear is not in the ascending trend (in the descending trend), the influence on the temperature of the inner disc is great after the initial wind gear is adjusted upwards, so that the temperature of the inner disc is not in the ascending trend any more, and the current wind gear can be directly maintained.
In addition, the trend that does not rise among them includes: the inner tray temperature is in a descending trend and the inner tray temperature is neither in an ascending trend nor in a descending trend. In both cases, the influence on the temperature of the inner disc after the initial wind gear is adjusted up is achieved, and therefore the current wind gear can be directly maintained.
Therefore, through re-judgment, circulation is formed, and the temperature of the inner disc is changed from an ascending trend to a descending trend through superposition of the multiple upward-adjusting wind gears, so that the temperature is timely reduced.
Optionally, the gear of transferring upward is a gear of transferring upward, like this, transfers upward the wind gear of indoor fan one by one gear to prevent the wind gear from transferring upward too high noise too big scheduling problem that causes. Optionally, as shown in fig. 5, the step 600 specifically includes:
here, the step is to start timing after an initial wind gear of the indoor fan is adjusted upwards, and monitor the inner plate temperature of the air conditioner once every time a first time interval is reached.
Optionally, the value range of the first time interval is 0.5-2.0 s. By taking the value range as the first time interval, on one hand, the continuous monitoring of the temperature of the inner disc can be avoided, thereby saving the occupation of system resources; on the other hand, the change trend of the inner disc temperature can be measured in time, so that the subsequent timely adjustment of the inner disc temperature is facilitated, and the over-high inner disc temperature caused by untimely adjustment is avoided.
The temperature of the inner disc obtained in N times is higher than that of the inner disc obtained in the last time, namely the temperature of the inner disc is in an ascending trend; the inner disc temperature obtained in N times of continuous times is lower than the inner disc temperature obtained in the last time, namely the inner disc temperature is in a descending trend.
After the initial wind gear of the indoor fan is adjusted upwards, the rising trend of the temperature of the inner disc cannot be stopped rapidly, the situation that the temperature of the inner disc begins to fall after rising for one time or multiple times can occur, and whether the temperature rises for N times continuously is judged, so that misjudgment caused by the situation is eliminated, and the judgment accuracy is improved.
Optionally, the value range of N is 2-7. The value range can reduce the misjudgment caused by too few continuous judgment times on one hand, so that the subsequent steps can be started in time for cooling; on the other hand, the judgment failure caused by excessive judgment times can be reduced, so that the problems of untimely cooling and overhigh temperature of the inner disc caused by untimely judgment can be avoided.
In addition, the judgment of the rising trend of the inner disk temperature is obtained by continuously judging the inner disk temperature obtained each time and the inner disk temperature obtained last time; if only the rising trend is judged, the temperature of the inner disc is required to be continuously obtained according to the first time interval and judged no matter whether the temperature of the inner disc reaches the falling trend, so that a great deal of waste of system resources is caused; the temperature of the inner disc does not tend to rise, and the method comprises the following steps: the inner tray temperature is in a descending trend and the inner tray temperature is neither in an ascending trend nor in a descending trend. In both cases, the influence on the temperature of the inner disc after the initial wind gear is adjusted up is achieved, and therefore the current wind gear can be directly maintained. By increasing the judgment of the descending trend of the inner disc temperature, when the inner disc temperature reaches the descending trend, the judgment result can be directly obtained, so that the inner disc temperature does not need to be obtained according to the first time interval and is judged, and the system resources are saved.
Optionally, as shown in fig. 6, the step 600 specifically includes:
601, acquiring the temperature of the inner disc once after a second time interval;
here, the step is to start timing after the initial wind gear of the indoor fan is adjusted upwards, and record the inner plate temperature of the air conditioner when the second time interval is reached.
Optionally, the value range of the second time interval is 3-10 s. By taking the value range as the second time interval, the inaccurate monitoring of the inner disk temperature caused by the excessively short time interval can be avoided (the inner disk temperature can possibly appear, and the outer fan rises and then falls in a short time after being stopped), and the change trend of the inner disk temperature can be measured in time, so that the problem that the hard disk temperature is excessively high when the inner disk temperature is not adjusted in time due to the excessively long time interval is avoided.
Whether the temperature of the inner disc is higher than the temperature of the inner disc obtained last time is judged, namely the temperature of the inner disc is in an ascending trend; whether the temperature of the inner disc is lower than that of the inner disc obtained last time is judged, namely the temperature of the inner disc is in a descending trend.
Therefore, compared with continuous N times of judgment, the change trend of the inner disc temperature can be obtained through one-time judgment, so that the subsequent steps can be executed in time, and the inner disc temperature can be reduced in time.
Optionally, as shown in fig. 7, after step 800, the method further includes:
Through setting a first temperature threshold value, the outer fan of the air conditioner can be started to perform normal heating operation after the temperature of the inner disc is reduced to a certain degree. Therefore, after the inner disc temperature is greater than the second temperature threshold value, the inner disc temperature is cooled, and after the inner disc temperature is reduced to the first temperature threshold value, normal heating operation is performed, circulation is performed repeatedly in this way, the inner disc temperature is controlled between the first temperature threshold value and the second temperature threshold value, and therefore the inner disc temperature and the system operation pressure are controlled within a reasonable range.
Optionally, as shown in fig. 8, after the step 1200, the method further includes:
with respect to steps 100-1200, we can see that it actually describes: after the temperature of the inner disc is greater than the second temperature threshold value, the temperature of the inner disc is reduced, and after the temperature of the inner disc is reduced to the first temperature threshold value, normal heating operation is carried out, so that circulation is carried out repeatedly; this step is to determine whether or not only one cycle has been performed after the compressor is started.
The first time is larger than the second temperature threshold value, which means that the high temperature protection logic is triggered for the first time after the compressor is started, and the external fan is triggered to stop for the first time, and only one cycle is performed. After the compressor is started, the load is large, so that the operation of the compressor is unstable in a period of time after the compressor is started, and the operating pressure and the temperature of an inner disc of a system can rise to be high; but after the compressor operation is stabilized, the operating pressure of the system may be reduced as compared to the inner disc temperature for an initial period of time.
In this step, whether the first circulation is performed is determined by determining whether the temperature of the inner disc is greater than the second temperature threshold for the first time, and it is obvious from the description of the above steps that if the first circulation is completed, it means: the temperature of the inner disc is greater than the second temperature threshold for the first time, the outer fan is only shut down once (for the first time), and the outer fan is started for the second time (the outer fan is started for the first time at the same time when the compressor is started); here, the judgment of whether the temperature of the inner disk is greater than the second temperature threshold value for the first time corresponds to the judgment of whether the outer fan is stopped for the first time or whether the outer fan is started for the second time.
Wherein, the compressor starts, including: compressor when the air conditioner receives restart after the remote control shut down signal starts, compressor when the air conditioner outage restart after the compressor starts, the compressor start when the inner ring temperature is greater than third temperature threshold value in this application and force to stop the compressor after the compressor restart, and the compressor restart that other circumstances caused.
the first time the temperature is greater than the second temperature threshold value means that the high temperature protection logic is triggered for the first time after the compressor is started, and the triggering is caused by unstable operation of the compressor, so that the indoor fan needs to be operated according to an initial wind gear. And 1500, if the temperature is not greater than the second temperature threshold for the first time, controlling the indoor fan to operate according to the current wind gear.
Therefore, the first triggering after the compressor is started is distinguished by other triggering except the first triggering, so that the influence of unstable operation on high-temperature prevention control after the compressor is started can be eliminated, the wind gear of the indoor fan which is possibly caused by the unstable operation is prevented from being adjusted upwards, and the problem of poor user experience effect caused by improper wind gear adjustment is also avoided.
Therefore, the temperature of the inner disc is triggered for the first time after the compressor is started to be greater than the second temperature threshold value, so that the outer fan is stopped to cool, even if the compressor is unstable in operation, the air damper of the indoor fan is improved, the noise is increased, and the user experience degree is reduced; and the indoor fan can not be kept in a wind shield lifting state in subsequent operation, so that the influence of unstable operation after the compressor is started on the application of high-temperature control is avoided.
Optionally, as shown in fig. 9, after step 800, the method further includes:
and 1700, if the temperature is greater than the third temperature threshold, controlling the compressor of the air conditioner to stop.
And the third temperature threshold is the saturation temperature of the maximum allowable operation pressure of the air conditioner. If the inner disc temperature is higher than the saturation temperature, damage may be caused to the compressor operating at the inner disc temperature. Therefore, the compressor is directly stopped after the temperature of the inner disc is higher than the third temperature threshold value, and damage to the compressor caused by overhigh pressure of an air conditioning system is avoided.
Optionally, as shown in fig. 10, after the step 1700, the method further includes:
1800, recording the shutdown time of the compressor;
the recording of the compressor down time is initiated at the compressor down time.
in order to protect the compressor and prevent damage caused by frequent starting and stopping of the compressor, the shutdown protection time of the compressor is set, after the compressor is shut down, the shutdown time of the compressor needs to be longer than the shutdown protection time to start the compressor, wherein the shutdown protection time is 3-4 min; therefore, the compressor is shut down and protected, and damage to the compressor caused by frequent starting and stopping can be prevented.
Therefore, whether two conditions that the temperature of the inner disc is smaller than the first temperature threshold value and the shutdown time is larger than the shutdown protection time of the compressor are met or not needs to be judged, and the compressor and the outer fan can be restarted only if the two conditions are met.
And 2000, if so, starting the compressor and the outer fan, and controlling the indoor fan to operate according to the initial wind gear.
After the compressor is started, the load is large, so that the operation of the compressor is unstable in a period of time after the compressor is started, and the operating pressure and the temperature of an inner disc of a system can rise to be high; but after the compressor operation is stabilized, the operating pressure of the system may be reduced as compared to the inner disc temperature for an initial period of time. Therefore, after the compressor is started, the compressor is controlled to operate according to the initial wind gear, the interference of the operation condition of the compressor when other wind gears operate can be eliminated, the compressor can operate stably as soon as possible, and the unstable operation of the compressor and the air conditioner caused by the operation according to other wind gears is prevented.
Therefore, the compressor and the outer fan are started at the first temperature threshold value through judging the temperature of the inner disc and the shutdown time, so that circulation is performed repeatedly, and the temperature of the inner disc and the operation pressure of the system are controlled within a reasonable range.
The present application also provides a computer-readable storage medium, which stores instructions that, when being loaded and executed by a processor, can implement the control method for preventing high temperature protection of an air conditioner.
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.
Like this, through the adjustment to indoor fan windscreen, can be so that the inner disc temperature in time descends, solved the too high temperature problem that the inner disc temperature in time descends and brings to be convenient for with the inner disc temperature and the system operating pressure control of air conditioner in reasonable scope, make the air conditioner normal operating, improve user's result of use and comfort level.
The application also provides a control device of the variable capacitance system, which comprises a processor and a memory, wherein the memory stores a control program, and the control program is executed by the processor to realize the control method for preventing the high temperature protection of the air conditioner.
Like this, through the adjustment to indoor fan windscreen, can be so that the inner disc temperature in time descends, solved the too high temperature problem that the inner disc temperature in time descends and brings to be convenient for with the inner disc temperature and the system operating pressure control of air conditioner in reasonable scope, make the air conditioner normal operating, improve user's result of use and comfort level.
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 control method for preventing high temperature protection of an air conditioner is characterized by comprising the following steps:
acquiring the temperature of an inner disc of the air conditioner;
judging whether the temperature of the inner disc is greater than a second temperature threshold value or not;
if the temperature is greater than the second temperature threshold value, stopping an external fan of the air conditioner;
acquiring change data of the inner disc temperature of the air conditioner, and judging whether the inner disc temperature is in an ascending trend or not according to the change data;
if the air conditioner is in the ascending trend, the initial wind gear of the indoor fan of the air conditioner is shifted up;
the inner disc temperature obtained for N times is higher than the inner disc temperature obtained last time, namely the inner disc temperature is in an ascending trend.
2. The method for controlling high temperature protection of an air conditioner according to claim 1, wherein the obtaining of the change data of the inner panel temperature of the air conditioner and the determining of whether the inner panel temperature is an ascending trend according to the change data specifically comprises:
acquiring the temperature of the inner disc at intervals of first time;
and judging whether the change of the temperature of the inner disc is an ascending trend.
3. The control method for preventing the high temperature protection of the air conditioner according to claim 2, wherein the value range of the first time interval is 0.5-2.5 s.
4. The control method for preventing the high temperature protection of the air conditioner according to claim 2, wherein the value range of N is 2-7.
5. The method for controlling high temperature protection of an air conditioner according to any one of claims 1-4, wherein after the initial wind level of the indoor fan of the air conditioner is shifted up, the method further comprises:
re-acquiring the change data of the inner disc temperature, and judging whether the inner disc temperature is in an ascending trend or a descending trend according to the change data;
if the current wind shield is the highest wind shield, judging whether the current wind shield of the indoor fan is the ascending trend;
if the wind gear is the highest wind gear, controlling the indoor fan to keep the current wind gear;
if the current wind gear is not the highest wind gear, the current wind gear of the indoor fan is shifted up, the change data of the inner disc temperature is obtained again, and the inner disc temperature is judged to be in an ascending trend or a descending trend according to the change data;
and if the trend is a descending trend, controlling the indoor fan to keep the current wind gear.
6. The method as claimed in claim 5, further comprising, after controlling the indoor fan to maintain the current wind level:
judging whether the temperature of the inner disc is smaller than a first temperature threshold value, wherein the first temperature threshold value is smaller than the second temperature threshold value;
and if the temperature is smaller than the first temperature threshold value, starting the outer fan.
7. The method for controlling high temperature protection of an air conditioner according to claim 6, further comprising, after the starting of the external air blower:
judging whether the temperature of the inner disc is greater than the second temperature threshold value for the first time after the compressor is started;
if the current wind gear of the indoor fan is larger than the second temperature threshold for the first time, reducing the current wind gear of the indoor fan to the initial wind gear;
and if the current wind gear is not larger than the second temperature threshold for the first time, controlling the indoor fan to operate according to the current wind gear.
8. The method as claimed in claim 5, further comprising, after controlling the indoor fan to maintain the current wind level:
judging whether the temperature of the inner disc is greater than a third temperature threshold value, wherein the third temperature threshold value is greater than the second temperature threshold value;
and if the temperature is greater than the third temperature threshold value, controlling the compressor of the air conditioner to stop.
9. The method for controlling high temperature protection of an air conditioner according to claim 8, further comprising, after the controlling of the compressor of the air conditioner is stopped:
recording a down time of the compressor;
judging whether the temperature of the inner disc is smaller than a first temperature threshold value or not and the shutdown time is longer than the shutdown protection time of the compressor;
if so, starting the compressor and the outer fan, and controlling the indoor fan to operate according to the initial wind gear.
10. A computer-readable storage medium storing instructions, wherein the instructions when loaded and executed by a processor implement the control method for protecting an air conditioner from high temperature according to any one of claims 1 to 9.
11. A control device for preventing high temperature protection of an air conditioner, comprising a processor and a memory, wherein the memory stores a control program, and the control program is executed by the processor to implement the control method for preventing high temperature protection of an air conditioner according to any one of claims 1 to 9.
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| CN110793156B (en) * | 2019-11-19 | 2021-12-14 | 宁波奥克斯电气股份有限公司 | Air conditioner heating over-temperature protection control method and device and air conditioner |
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| CN112303853B (en) * | 2020-10-30 | 2023-02-03 | 青岛海尔空调电子有限公司 | Control method of air suction type air conditioner |
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| CN114688007A (en) * | 2022-03-23 | 2022-07-01 | 浙江宜格企业管理集团有限公司 | Cosmetic instrument air compressor overheating protection control method, system and equipment |
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