CN113339982B - Lightning protection control method and device for air conditioner and outdoor unit of air conditioner - Google Patents
Lightning protection control method and device for air conditioner and outdoor unit of air conditioner Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/46—Component arrangements in separate outdoor units
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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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
- F24F2130/00—Control inputs relating to environmental factors not covered by group F24F2110/00
- F24F2130/20—Sunlight
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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
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Abstract
The lightning protection control method of the air conditioner comprises the following steps: starting a lightning detection mode at intervals according to a set detection period; sampling the real-time environment sound intensity of the position of the outdoor unit of the air conditioner at least twice, and judging whether two real-time sound intensity detection values meet the enhancement trend; starting an instantaneous detection period, at least sampling the real-time environment illumination intensity of the position of the outdoor unit of the air conditioner in each instantaneous detection period, and judging whether the difference between the two real-time environment illumination intensities is greater than or equal to an instantaneous illumination intensity change threshold value or not; and if the real-time sound intensity detection value meets the enhancement trend and the difference of the real-time environment illumination intensity is larger than or equal to the instantaneous illumination intensity change threshold value, starting the air conditioner protection mode. A control device and an outdoor unit of an air conditioner are also provided. According to the invention, through detecting the real-time environment sound intensity and the real-time environment illumination intensity, the thunder and lightning condition of the environment where the outdoor unit of the air conditioner is located can be identified, the protection mode of the air conditioner is started in time, and the air conditioner is effectively protected.
Description
Technical Field
The invention belongs to the technical field of air conditioning, and particularly relates to a lightning protection control method for an air conditioner, a lightning protection control device for the air conditioner and an outdoor unit of the air conditioner.
Background
In a typical high-rise residence, the split air conditioner still occupies a large percentage. Lightning protection for high-rise buildings is usually focused on lightning protection design for the buildings, and side-strike protection is required to be well done, all metal objects on an outer wall are reliably connected with a lightning strip, the lightning strip is further reliably connected with a down lead, and the like. The generation of lightning is mainly a violent discharge phenomenon which occurs when the potential difference between cloud layers or between cloud and the ground and between cloud and air reaches a certain degree. Lightning strikes typically include direct lightning strikes and inductive lightning strikes. For direct lightning strike, when the height of metal objects such as an air conditioner outdoor unit and the like on the outer wall of a building exceeds the radius of the lightning model rolling ball, the metal objects are easily subjected to side lightning strike. Or, when the lightning current exceeds the minimum lightning current amplitude protected by the lightning receptor, the air conditioner is also easy to break down, and meanwhile, the lightning current can also be transmitted along the power line, so that other indoor electronic equipment is damaged. For induction mines, the points between thunderclouds or between thunderclouds and the ground can generate induction voltage on nearby overhead lines, metal objects or similar conductors, and the induced voltage is transmitted to equipment through the conductors to indirectly destroy microelectronic equipment. Especially, when the lightning current gradient reaches 50 kA/mus and the discharge current reaches 300-400kA, a strong alternating magnetic field is generated, the induced voltage generated in the air conditioner induction loop far exceeds the safe bearing voltage of the air conditioner, and the air conditioner induction loop is broken down to cause fatal damage.
The prior art solutions for lightning protection in high-rise dwellings have mainly focused on improvements in the building, such as the addition of lightning receptors, downlinks, earth grids and arresters, etc. However, most outdoor units of air conditioners and their metal brackets on the outer wall of a building are not connected to the lightning protection device of the building. Especially, the air conditioner is usually purchased after the acceptance of the construction and is installed by the user, the position, the shape and the size of the air conditioner are selected by the user, and the corresponding position may not be provided with a connection embedded point for preventing the outdoor unit of the air conditioner and the metal fixing bracket thereof from side lightning. Therefore, when lightning occurs, there is a relatively large safety risk in using the air conditioner, and a safety accident may occur.
Disclosure of Invention
The invention relates to a lightning protection control method of an air conditioner, aiming at the problems that most outdoor units of the air conditioner on the outer wall of a building and metal brackets thereof are not connected with a lightning protection device of the building in the prior art, especially the air conditioner is usually purchased after the building is checked and accepted and is installed by a user, the position, the shape and the size of the air conditioner are selected by the user, and the corresponding installation position is not provided with a connection embedded point for preventing the outdoor unit of the air conditioner and the metal fixed bracket from side lightning stroke, so that the use of the air conditioner has safety risk when the lightning occurs.
In order to realize the purpose of the invention, the invention is realized by adopting the following technical scheme:
a lightning protection control method for an air conditioner comprises the following steps: starting a lightning detection mode at intervals according to a set detection period; under the thunder and lightning detection mode, sampling the real-time environment sound intensity of the position of the outdoor unit of the air conditioner at least twice, and judging whether two real-time sound intensity detection values meet the enhancement trend; starting an instantaneous detection period in the lightning detection mode, at least sampling the real-time environment illumination intensity of the position of the outdoor unit of the air conditioner in each instantaneous detection period, and judging whether the difference between the two real-time environment illumination intensities is greater than or equal to an instantaneous illumination intensity change threshold value or not; and if the real-time sound intensity detection value meets the enhancement trend and the difference of the real-time environment illumination intensity is larger than or equal to the instantaneous illumination intensity change threshold value, starting the air conditioner protection mode.
Further, the set detection period is determined by: sampling the real-time environment humidity of the position of an air conditioner outdoor unit; judging whether the real-time environment humidity is smaller than a first set humidity threshold value or not; if the real-time environment humidity is smaller than a first set humidity threshold value, the lightning detection mode is kept not started; if the real-time environment humidity is larger than or equal to a first set humidity threshold value, judging whether the real-time environment humidity is smaller than a second set humidity threshold value or not; if the real-time environment humidity is smaller than a second set humidity threshold value, starting a lightning detection mode at intervals according to a first set detection period; if the real-time environment humidity is greater than or equal to a second set humidity threshold, judging whether the real-time environment humidity is smaller than a third set humidity threshold; if the real-time environment humidity is smaller than a third set humidity threshold value, starting a lightning detection mode at intervals according to a second set detection period; if the real-time environment humidity is greater than or equal to a third set humidity threshold, judging whether the real-time environment humidity is smaller than a fourth set humidity threshold; if the real-time environment humidity is smaller than a fourth set humidity threshold value, starting a lightning detection mode at intervals according to a third set detection period; if the real-time environment humidity is larger than or equal to a fourth set humidity threshold value, starting a lightning detection mode according to a fourth set detection period interval; the first set detection period, the second set detection period, the third set detection period and the fourth set detection period are sequentially decreased progressively.
Preferably, the first humidity threshold setting is 30%, the second humidity threshold setting is 50%, the third humidity threshold setting is 70%, and the fourth humidity threshold setting is 90%.
Preferably, the first set detection period is 3 hours, the second set detection period is 1 hour, the third set detection period is 0.5 hours, and the fourth set detection period is 0.3 hours.
Further, the method also comprises the following steps: and if the two real-time sound intensity detection values meet the enhancement trend and the difference between the two real-time environment illumination intensities is greater than or equal to the instantaneous illumination intensity change threshold value, judging whether the last real-time environment sound intensity is greater than or equal to a first set sound intensity protection threshold value, and if the last real-time environment sound intensity is greater than or equal to the first set sound intensity protection threshold value, cutting off the power supply of the air conditioner in the air conditioner protection mode.
Further, the method also comprises the following steps: if the last real-time environment sound intensity is smaller than a first set sound intensity protection threshold, judging whether the last real-time environment sound intensity is larger than or equal to a second set sound intensity protection threshold, and if the last real-time environment sound intensity is larger than or equal to the second set sound intensity protection threshold, controlling the air conditioner to enter a standby state in an air conditioner protection mode; wherein the second set sound intensity protection threshold is less than the first set sound intensity protection threshold.
Further, the method also comprises the following steps: if the two real-time sound intensity detection values meet the enhancement trend and the difference between the two real-time environment illumination intensities is larger than or equal to the instant illumination intensity change threshold value, judging whether the last real-time environment sound intensity is larger than or equal to a first set sound intensity protection threshold value, if the last real-time environment sound intensity detection value is larger than or equal to the first set sound intensity protection threshold value, starting the thunder detection mode again at intervals according to the correction detection period, judging whether the two real-time sound intensity detection values meet the enhancement trend and the difference between the two real-time environment illumination intensities is larger than or equal to the instant illumination intensity change threshold value again, if the two real-time sound intensity detection values meet the enhancement trend and the difference between the two real-time environment illumination intensities is larger than or equal to the instant illumination intensity change threshold value again, further judging whether the last real-time environment sound intensity is larger than or equal to the first set sound intensity protection threshold value again, and cutting off the power supply of the air conditioner in the air conditioner protection mode if the last real-time sound intensity detection values meet the enhancement trend and the difference between the two real-time environment illumination intensity change threshold value.
Further, the method also comprises the following steps: if the two real-time sound intensity detection values meet the enhancement trend and the difference between the two real-time environmental illumination intensities is greater than or equal to the instant illumination intensity change threshold value, and the last real-time environmental sound intensity is smaller than the first set sound intensity protection threshold value, judging whether the last real-time environmental sound intensity is greater than or equal to the second set sound intensity protection threshold value, if the last real-time environmental sound intensity detection value is greater than or equal to the second set sound intensity protection threshold value, starting the lightning detection mode at intervals again according to the modification detection period corresponding to the real-time environmental humidity, judging whether the two real-time sound intensity detection values meet the enhancement trend and the difference between the two real-time environmental illumination intensities is greater than or equal to the instant illumination intensity change threshold value again, if the two real-time sound intensity detection values meet the enhancement trend and the difference between the two real-time environmental illumination intensities is greater than or equal to the instant illumination intensity change threshold value, judging whether the last real-time environmental sound intensity is greater than or equal to the second set sound intensity protection threshold value and smaller than the first set sound intensity protection threshold value again, and if the last real-time environmental sound intensity detection value is greater than or equal to the second set sound intensity protection threshold value, the air conditioner enters the standby state in the air conditioner protection mode.
Another aspect of the present invention provides a lightning protection control device for an air conditioner, including: the lightning detection device comprises a starting module, a detection module and a control module, wherein the starting module is configured to start a lightning detection mode at intervals according to a set detection period; the first judging module is configured to sample the real-time environment sound intensity of the position where the outdoor unit of the air conditioner is located at least twice in the lightning detection mode, and judge whether two real-time sound intensity detection values meet the enhancement trend; the second judgment module is configured to start an instantaneous detection period in the lightning detection mode, sample at least the real-time environment illumination intensity of the position where the outdoor unit of the air conditioner is located in each instantaneous detection period, and judge whether the difference between the two real-time environment illumination intensities is greater than or equal to an instantaneous illumination intensity change threshold value; and the execution module is configured to start the air conditioner protection mode when the two real-time sound intensity detection values meet the enhancement trend and the difference between the two real-time environment illumination intensities is greater than or equal to the instantaneous illumination intensity change threshold value.
A third aspect of the present invention provides an outdoor unit of an air conditioner, which performs a lightning protection control method for the air conditioner, the lightning protection control method for the air conditioner including the steps of: starting a lightning detection mode at intervals according to a set detection period; under the thunder and lightning detection mode, sampling the real-time environment sound intensity of the position of the outdoor unit of the air conditioner at least twice, and judging whether two real-time sound intensity detection values meet the enhancement trend; in the lightning detection mode, starting instantaneous detection periods, at least sampling the real-time environment illumination intensity of the position of the outdoor unit of the air conditioner in each instantaneous detection period, and judging whether the difference between the two real-time environment illumination intensities is greater than or equal to the instantaneous illumination intensity change threshold value or not; and if the real-time sound intensity detection value meets the enhancement trend and the difference of the real-time environment illumination intensity is larger than or equal to the instantaneous illumination intensity change threshold value, starting the air conditioner protection mode.
Compared with the prior art, the invention has the advantages and positive effects that: according to the invention, through detecting the real-time environment sound intensity and the real-time environment illumination intensity, the thunder and lightning condition of the environment where the outdoor unit of the air conditioner is located can be identified, the protection mode of the air conditioner is started in time, and the air conditioner is effectively protected.
Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flow chart of an embodiment of a lightning protection control method for an air conditioner according to the present invention;
fig. 2 is a flowchart illustrating a process of determining a set detection period in the lightning protection control method of the air conditioner shown in fig. 1;
fig. 3 is a schematic block diagram of an embodiment of a lightning protection control device of an air conditioner according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and examples.
The terms "first," "second," "third," and the like in the description and in the claims, and in the drawings, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "include" and "have," as well as any variations thereof, represent non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Reference throughout this specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. One skilled in the art will appreciate that the embodiments described herein can be combined with other embodiments.
Aiming at the problems that most outdoor units of air conditioners on the outer wall of a building and metal supports of the outdoor units are not connected with a lightning protection device of the building in the prior art, particularly the air conditioners are usually purchased after the acceptance of the building and are installed by users, the positions, the shapes and the sizes of the air conditioners are selected by users, and the corresponding installation positions are not provided with connection embedded points for preventing the outdoor units and the metal fixing supports of the outdoor units from side lightning. Specifically, referring to fig. 1, the lightning protection control method for the air conditioner mainly includes the following steps.
And S10, starting a lightning detection mode at intervals according to a set detection period.
And S20, under the thunder and lightning detection mode, at least sampling the real-time environment sound intensity of the position where the outdoor unit of the air conditioner is located, and judging whether the two real-time sound intensity detection values meet the enhancement trend.
And S30, starting an instantaneous detection period in a lightning detection mode, at least sampling the real-time environment illumination intensity of the position of the outdoor unit of the air conditioner in each instantaneous detection period, and judging whether the difference between the two real-time environment illumination intensities is greater than or equal to an instantaneous illumination intensity change threshold value or not.
And S40, if the real-time sound intensity detection value meets the enhancement trend and the difference of the real-time environment illumination intensity is larger than or equal to the instantaneous illumination intensity change threshold value, starting the air conditioner protection mode.
In the lightning detection mode, the real-time detection of the ambient sound intensity is preferably performed by a decibel tester provided in the outdoor unit of the air conditioner. In order to distinguish from normal noise in outdoor environment, a decibel tester is arranged to automatically filter out a sampling value lower than a set noise level. For example, the decibel tester only considers that the real-time environmental sound intensity of the location where an outdoor unit of an air conditioner is located is obtained by sampling when the collected noise level reaches 90 decibels. Under the thunder and lightning detection mode, if the decibel tester samples the real-time environment sound intensity of the position of the outdoor unit of the air conditioner for at least two times and judges that two real-time sound intensity detection values meet the enhancement trend, signals are output to a main control board of the outdoor unit of the air conditioner, and the first path of detection signals for judging the current thunder and lightning state are obtained.
Also in the lightning detection mode, a transient detection period is initiated. The transient detection period is mainly used for detecting lightning. The instantaneous detection period is set to 1 to 2 seconds. And further, respectively sampling the real-time environment illumination intensity of the position of the primary air conditioner outdoor unit at the initial time and the end time of the instant detection period, and judging whether the difference between the two real-time environment illumination intensities is greater than or equal to the instant illumination intensity change threshold value. The real-time environment illumination intensity of the position where the outdoor unit of the air conditioner is located is preferably sampled through an illumination detector or a lumen tester, and the instantaneous illumination intensity change threshold is obtained under experimental conditions. And if the illumination detector or the lumen tester samples that the difference between the two real-time environment illumination intensities is greater than or equal to the instantaneous illumination intensity change threshold, outputting a signal to the main control board of the outdoor unit of the air conditioner, namely obtaining a second path of detection signal for judging the current lightning state.
And after the main control board of the outdoor unit of the air conditioner obtains a judgment result that the real-time sound intensity detection value meets the enhancement trend and the difference of the real-time environment illumination intensity is larger than or equal to the instantaneous illumination intensity change threshold value, starting the protection mode of the air conditioner. Specifically, it is preferable that a normally closed contact of a single relay is connected in series in a main power supply circuit of the air conditioner, and if the lightning use state is determined in the lightning detection mode, a driving signal is output from the main control board of the outdoor unit of the air conditioner to drive the normally closed contact to be turned off. The normally closed contact is preferably linked with a lightning protection button independent of the control panel of the air conditioner, and the air conditioner can recover normal power supply only by pressing the lightning protection button again by a user. Preferably, under the condition that the data processing capability is satisfied, the sound intensity of the real-time environment and the illumination intensity of the real-time environment are preferably set for multiple times of sampling, and whether the detection values of the real-time sound intensities satisfy the enhancement trend and whether the difference between multiple groups of adjacent real-time environment illumination intensities is greater than or equal to the instantaneous illumination intensity change threshold value is judged.
Through the detection to real-time environment sound intensity and real-time environment illumination intensity, can discern the thunder and lightning condition of the environment that the air conditioner off-premises station is located, in time start air conditioner protection mode, effectively protect the air conditioner.
The forced cut-off of the power supply loop of the air conditioner can affect the actual experience of a user, so that the control method provided by the invention needs to avoid misjudgment to the maximum extent. In conjunction with meteorological wisdom, while lightning is generally divided into 3 general categories of hot lightning, lightning front, and lightning on terrain, in urban environments the most common type of lightning is hot lightning. Wherein, the thermal lightning must have the following conditions: 1, air is very humid, and water vapor in the air is nearly saturated; 2. no wind or small wind exists in the environment, and the airflow changes little; 3. the temperature rises rapidly. These three conditions are also highly compatible with the environmental conditions of the users using the air conditioners, being the type of lightning that needs to be protected the most. For this use feature, it is specifically designed to determine the set detection period by the following steps. Referring to fig. 2:
and S51, sampling the real-time environment humidity of the position where the air conditioner external unit is located. The real-time environment humidity is realized through a humidity sensor arranged in an outdoor unit of the air conditioner, and the humidity sensor is connected with a main control chip of the outdoor unit.
Step S52, judging whether the real-time environment humidity is smaller than a first set humidity threshold value; and if the real-time environment humidity is smaller than a first set humidity threshold value, keeping the lightning detection mode not started. When the real-time environment humidity is smaller than the first set humidity threshold value, the air is very dry, lightning can be generated at a very low possibility in a future period of time, and the normal use of a user needs to be guaranteed in a critical way in the state. Thus, the lightning detection mode remains inactive.
Step S53, if the real-time environment humidity is greater than or equal to a first set humidity threshold, judging whether the real-time environment humidity is less than a second set humidity threshold; and if the real-time environment humidity is smaller than a second set humidity threshold value, starting the lightning detection mode according to the first set detection period interval. When the real-time environmental humidity is greater than or equal to the first set humidity threshold and less than the second set humidity threshold, the meteorological conditions in a future period of time need to be monitored, so the lightning detection mode is set to be started at intervals of a first set detection period, which is relatively long, for example, 3-5 hours. The first set detection period is also preferably finely calibrated under the constraints of the real-time outdoor ambient temperature and the real-time upwind speed of the real-time outdoor fan. Specifically, when the real-time environment humidity is greater than or equal to a first set humidity threshold and less than a second set humidity threshold, it is determined whether the outdoor environment temperature is greater than or equal to the outdoor environment temperature threshold, and whether the real-time headwind wind speed of the outdoor fan is less than or equal to the headwind wind speed threshold, and if the outdoor environment temperature is greater than or equal to the outdoor environment temperature threshold and the real-time headwind wind speed of the outdoor fan is less than or equal to the headwind wind speed threshold, the conditions that the real-time humidity is low, the temperature is high, and the wind speed is low are met, and in such a state, the first set detection period is preferably automatically shortened through fine calibration. For example, if the first set detection period is 3 hours, under the constraint conditions that the actual ambient temperature is greater than or equal to the outdoor ambient temperature threshold and the real-time headwind wind speed of the outdoor fan is less than or equal to the headwind wind speed threshold, the first set detection period is automatically and accurately corrected and shortened to 2 hours, and the early warning condition is paid more frequent attention. Wherein the first set humidity threshold is 30% and the second set humidity threshold is 50%.
Step S54, if the real-time environment humidity is greater than or equal to a second set humidity threshold, judging whether the real-time environment humidity is smaller than a third set humidity threshold; and if the real-time environment humidity is smaller than a third set humidity threshold value, starting the lightning detection mode at intervals according to a second set detection period. In this state, the humidity is higher, the detection cycle is further shortened, and the second setting cycle is preferably set to 1 hour. The third set humidity threshold is 70%.
Step S55, if the real-time environment humidity is greater than or equal to a third set humidity threshold, judging whether the real-time environment humidity is smaller than a fourth set humidity threshold; and if the real-time environment humidity is smaller than a fourth set humidity threshold value, starting the lightning detection mode at intervals according to a third set detection period. In this state, the humidity is higher, and the detection cycle is further shortened, and the third set detection cycle is preferably set to 0.5 hours, and the fourth set humidity threshold is 90%.
And S56, if the real-time environment humidity is greater than or equal to a fourth set humidity threshold value, starting a lightning detection mode according to a fourth set detection period interval. At this point the humidity is already very high and the fourth set detection period is preferably set to 0.3 hours.
The natural conditions of forming thermal lightning are combined with the actual time length of the set detection period, so that the detection precision of the lightning detection mode can be effectively improved, the influence of other external conditions is eliminated, the misjudgment rate is reduced, and the use experience of a user is improved.
More preferably, the distance of the sound source can be roughly determined according to the real-time environment sound intensity, when the position where the lightning occurs is far, the risk of accidents is small, and when the position where the lightning occurs is close, the risk of accidents is large. Based on the principle, the following steps are especially designed, if two real-time sound intensity detection values meet the enhancement trend and the difference between two real-time environment illumination intensities is greater than or equal to the instantaneous illumination intensity change threshold, whether the last real-time environment sound intensity is greater than or equal to a first set sound intensity protection threshold is further judged, if the last real-time environment sound intensity is greater than or equal to the first set sound intensity protection threshold, the sound source distance is relatively close, and under the air conditioner protection mode, the power supply of the air conditioner is cut off, for example, the normally closed contact of a relay is controlled to be cut off. The first set sound intensity protection threshold is obtained under experimental conditions and may be set, for example, to 120 db. If the last real-time environment sound intensity is smaller than the first set sound intensity protection threshold value, whether the last real-time environment sound intensity is larger than or equal to the second set sound intensity protection threshold value or not is judged, if the last real-time environment sound intensity is larger than or equal to the second set sound intensity protection threshold value, the sound source distance is relatively far, the air conditioner is controlled to enter a standby state under the protection mode of the air conditioner, the compressor, the outdoor fan and other main components are controlled to stop, and a user can recover power supply through ordinary operation after short-time lightning is finished. The second set sound intensity protection threshold is smaller than the first set sound intensity protection threshold, and may be set to 105 db, for example.
In order to reduce the misjudgment rate, it is also specially designed that if two real-time sound intensity detection values meet the enhancement trend and the difference between the two real-time environmental illumination intensities is greater than or equal to the instantaneous illumination intensity change threshold, it is determined whether the last real-time environmental sound intensity is greater than or equal to the first set sound intensity protection threshold, if the last real-time environmental sound intensity detection value is greater than or equal to the first set sound intensity change threshold, the lightning detection mode is started again at intervals according to the modified detection period, and it is determined again whether the two real-time sound intensity detection values meet the enhancement trend and the difference between the two real-time environmental illumination intensities is greater than or equal to the instantaneous illumination intensity change threshold, if the two real-time sound intensity detection values meet the enhancement trend and the difference between the two real-time environmental illumination intensities is greater than or equal to the instantaneous illumination intensity change threshold, it is further determined again whether the last real-time environmental sound intensity is greater than or equal to the first set sound intensity protection threshold, the air conditioner protection mode is started, and the air conditioner is controlled to enter the standby state. The correction detection period may be set to 1-5 minutes. Namely, the detection precision is improved through the redundancy detection, and the condition that the user is terminated by misjudgment is avoided.
Similarly, if the two real-time sound intensity detection values satisfy the enhancement trend and the difference between the two real-time environmental light intensities is greater than or equal to the instantaneous light intensity change threshold, and the last real-time environmental sound intensity is less than the first set sound intensity protection threshold, it is determined whether the last real-time environmental sound intensity is greater than or equal to the second set sound intensity protection threshold, if the last real-time environmental sound intensity is greater than or equal to the second set sound intensity protection threshold, the lightning detection mode is started again at intervals according to the modification detection period corresponding to the real-time environmental humidity, and it is determined again whether the two real-time sound intensity detection values satisfy the enhancement trend and the difference between the two real-time environmental light intensities is greater than or equal to the instantaneous light intensity change threshold, if the last real-time environmental sound intensity is greater than or equal to the second set sound intensity protection threshold and less than the first set sound intensity protection threshold, and if the last real-time environmental sound intensity detection values satisfy the enhancement trend and the difference between the two real-time environmental light intensities is greater than or equal to the instantaneous light intensity change threshold, the last real-time environmental sound intensity protection threshold is determined again, and the power supply of the air conditioner is cut off in the protection mode.
A second aspect of the present invention provides a lightning protection control device for an air conditioner, as shown in fig. 3. The lightning protection control device 1 of the air conditioner comprises:
the lightning detection device comprises a starting module 10, wherein the starting module 10 is configured to start a lightning detection mode according to a set detection period interval;
the first judging module 20, the first judging module 20 is configured to sample the real-time environment sound intensity of the position where the outdoor unit of the air conditioner is located at least twice in the thunder and lightning detection mode, and judge whether the two real-time sound intensity detection values meet the enhancement trend;
the second judging module 30 is configured to start an instantaneous detection period in a lightning detection mode, sample at least the real-time ambient illumination intensity of the position where the outdoor unit of the air conditioner is located in each instantaneous detection period, and judge whether the difference between the two real-time ambient illumination intensities is greater than or equal to an instantaneous illumination intensity change threshold value; and
and the execution module 40, wherein the execution module 40 is configured to start the air conditioner protection mode when the two real-time sound intensity detection values meet the enhancement trend and the difference between the two real-time environment illumination intensities is greater than or equal to the instantaneous illumination intensity change threshold value.
Through the detection to real-time environment sound intensity and real-time environment illumination intensity, can discern the thunder and lightning condition of the environment that the air conditioner outdoor unit is located, in time start the air conditioner protection mode, effectively protect the air conditioner.
A third aspect of the present invention provides an outdoor unit of an air conditioner for performing a lightning protection control method of the air conditioner. The specific steps of the lightning protection control method of the air conditioner refer to the detailed description of the above embodiments and the detailed description of the drawings in the specification, which are not repeated herein. The outdoor unit of the air conditioner, which performs the lightning protection control method of the air conditioner, can achieve the same technical effects.
Embodiments of the present application also provide a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, and the computer program causes an air conditioner to perform part or all of the steps of any one of the methods described in the above method embodiments.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the above-described units or modules is only one type of division of logical functions, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed coupling or direct coupling or communication connection between each other may be an indirect coupling or communication connection through some interfaces, devices or units, and may be an electrical or other form.
The units described as the separate parts may or may not be physically separate, and parts displayed as the units may or may not be physical units, that is, may be located in one physical space, or may also be distributed on multiple network units, and part or all of the units may be selected according to actual needs to achieve the purpose of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (8)
1. An air conditioner lightning protection control method is characterized by comprising the following steps:
sampling the real-time environment humidity of the position of an external unit of the air conditioner;
if the real-time environment humidity is larger than or equal to the first set humidity threshold and smaller than the second set humidity threshold, starting a lightning detection mode according to the first set detection period interval and accurately correcting the first set detection period according to the real-time outdoor environment temperature and the real-time upwind speed of the real-time outdoor fan: judging whether the outdoor environment temperature is greater than or equal to an outdoor environment temperature threshold value or not, and whether the real-time headwind wind speed of the outdoor fan is less than or equal to a headwind wind speed threshold value or not, and if the outdoor environment temperature is greater than or equal to the outdoor environment temperature threshold value and the real-time headwind wind speed of the outdoor fan is less than or equal to the headwind wind speed threshold value, automatically shortening a first set detection period through fine calibration; wherein the first set humidity threshold is 30% and the second set humidity threshold is 50%;
under the thunder and lightning detection mode, sampling the real-time environment sound intensity of the position of the outdoor unit of the air conditioner at least twice, and judging whether two real-time sound intensity detection values meet the enhancement trend;
starting an instantaneous detection period in the lightning detection mode, sampling at least two real-time environment illumination intensities of the position where the outdoor unit of the air conditioner is located in each instantaneous detection period, and judging whether the difference between the two real-time environment illumination intensities is greater than or equal to an instantaneous illumination intensity change threshold value or not;
if the two real-time sound intensity detection values meet the enhancement trend and the difference between the two real-time environment illumination intensities is greater than or equal to the instant illumination intensity change threshold value, judging whether the last real-time environment sound intensity is greater than or equal to a first set sound intensity protection threshold value or not, and if the last real-time environment sound intensity is greater than or equal to the first set sound intensity protection threshold value, cutting off the power supply of the air conditioner in the air conditioner protection mode;
if the last real-time environment sound intensity is smaller than the first set sound intensity protection threshold value, the method further comprises the step of judging whether the last real-time environment sound intensity is smaller than the first set sound intensity protection threshold value
Judging whether the sound intensity of the last real-time environment is greater than or equal to a second set sound intensity protection threshold, and controlling the air conditioner to enter a standby state in the air conditioner protection mode if the sound intensity of the last real-time environment is greater than or equal to the second set sound intensity protection threshold; wherein the second set sound intensity protection threshold is less than the first set sound intensity protection threshold.
2. The lightning protection control method for air conditioner according to claim 1,
further determining the set detection period by:
judging whether the real-time environment humidity is smaller than a first set humidity threshold value or not; if the real-time environment humidity is smaller than a first set humidity threshold value, the lightning detection mode is kept not started;
if the real-time environment humidity is greater than or equal to a second set humidity threshold, judging whether the real-time environment humidity is smaller than a third set humidity threshold; if the real-time environment humidity is smaller than a third set humidity threshold value, starting a lightning detection mode at intervals according to a second set detection period;
if the real-time environment humidity is greater than or equal to a third set humidity threshold, judging whether the real-time environment humidity is smaller than a fourth set humidity threshold; if the real-time environment humidity is smaller than a fourth set humidity threshold value, starting a lightning detection mode at intervals according to a third set detection period;
if the real-time environment humidity is larger than or equal to a fourth set humidity threshold value, starting a lightning detection mode at intervals according to a fourth set detection period;
the first set detection period, the second set detection period, the third set detection period and the fourth set detection period are sequentially decreased progressively.
3. The lightning protection control method according to claim 2,
the third set humidity threshold is 70% and the fourth set humidity threshold is 90%.
4. The lightning protection control method for air conditioner according to claim 2,
the first set detection period is 3 hours, the second set detection period is 1 hour, the third set detection period is 0.5 hours, and the fourth set detection period is 0.3 hours.
5. The lightning protection control method according to claim 1,
further comprising the steps of:
if the two real-time sound intensity detection values meet the enhancement trend and the difference between the two real-time environment illumination intensities is larger than or equal to the instant illumination intensity change threshold value, judging whether the last real-time environment sound intensity is larger than or equal to a first set sound intensity protection threshold value, if the last real-time environment sound intensity detection value is larger than or equal to the first set sound intensity protection threshold value, starting the thunder detection mode again at intervals according to the correction detection period, judging whether the two real-time sound intensity detection values meet the enhancement trend and the difference between the two real-time environment illumination intensities is larger than or equal to the instant illumination intensity change threshold value again, if the two real-time sound intensity detection values meet the enhancement trend and the difference between the two real-time environment illumination intensities is larger than or equal to the instant illumination intensity change threshold value again, further judging whether the last real-time environment sound intensity is larger than or equal to the first set sound intensity protection threshold value again, and cutting off the power supply of the air conditioner in the air conditioner protection mode if the last real-time sound intensity detection values meet the enhancement trend and the difference between the two real-time environment illumination intensity change threshold value.
6. The lightning protection control method for air conditioner according to claim 5,
further comprising the steps of:
if the two real-time sound intensity detection values meet the enhancement trend and the difference between the two real-time environmental illumination intensities is greater than or equal to the instant illumination intensity change threshold value, and the last real-time environmental sound intensity is smaller than the first set sound intensity protection threshold value, judging whether the last real-time environmental sound intensity is greater than or equal to the second set sound intensity protection threshold value, if the last real-time environmental sound intensity detection value is greater than or equal to the second set sound intensity protection threshold value, starting the lightning detection mode at intervals again according to the modification detection period corresponding to the real-time environmental humidity, judging whether the two real-time sound intensity detection values meet the enhancement trend and the difference between the two real-time environmental illumination intensities is greater than or equal to the instant illumination intensity change threshold value again, if the two real-time sound intensity detection values meet the enhancement trend and the difference between the two real-time environmental illumination intensities is greater than or equal to the instant illumination intensity change threshold value, judging whether the last real-time environmental sound intensity is greater than or equal to the second set sound intensity protection threshold value and smaller than the first set sound intensity protection threshold value again, and if the last real-time environmental sound intensity detection value is greater than or equal to the second set sound intensity protection threshold value, the air conditioner enters the standby state in the air conditioner protection mode.
7. A control apparatus for implementing a lightning protection control method of an air conditioner according to any one of claims 1 to 6, comprising:
the lightning detection module is configured to start a lightning detection mode according to a first set detection period interval and accurately correct a first set detection period according to a real-time outdoor environment temperature and a real-time upwind wind speed of a real-time outdoor fan when the real-time environment humidity is greater than or equal to a first set humidity threshold and is less than a second set humidity threshold: judging whether the outdoor environment temperature is greater than or equal to an outdoor environment temperature threshold value or not, and whether the real-time headwind wind speed of the outdoor fan is less than or equal to a headwind wind speed threshold value or not, and automatically shortening a first set detection period through fine correction if the outdoor environment temperature is greater than or equal to the outdoor environment temperature threshold value and the real-time headwind wind speed of the outdoor fan is less than or equal to the headwind wind speed threshold value; wherein the first set humidity threshold is 30% and the second set humidity threshold is 50%;
the first judging module is configured to sample the real-time environment sound intensity of the position where the outdoor unit of the air conditioner is located at least twice in the lightning detection mode, and judge whether two real-time sound intensity detection values meet the enhancement trend;
the second judgment module is configured to start an instantaneous detection period in the lightning detection mode, sample at least the real-time environment illumination intensity of the position where the outdoor unit of the air conditioner is located in each instantaneous detection period, and judge whether the difference between the two real-time environment illumination intensities is greater than or equal to an instantaneous illumination intensity change threshold value; and
the execution module is configured to judge whether the last real-time environment sound intensity is greater than or equal to a first set sound intensity protection threshold value or not when the two real-time sound intensity detection values meet the enhancement trend and the difference between the two real-time environment illumination intensities is greater than or equal to the instantaneous illumination intensity change threshold value, and if the last real-time environment sound intensity is greater than or equal to the first set sound intensity protection threshold value, the power supply of the air conditioner is cut off in the air conditioner protection mode; or if the last real-time environment sound intensity is smaller than the first set sound intensity protection threshold, judging whether the last real-time environment sound intensity is larger than or equal to a second set sound intensity protection threshold, and if the last real-time environment sound intensity is larger than or equal to the second set sound intensity protection threshold, controlling the air conditioner to enter a standby state in the air conditioner protection mode; wherein the second set sound intensity protection threshold is less than the first set sound intensity protection threshold.
8. An outdoor unit for an air conditioner, characterized by performing a lightning protection control method for an air conditioner according to any one of claims 1 to 6.
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| CN202110581114.XA CN113339982B (en) | 2021-05-26 | 2021-05-26 | Lightning protection control method and device for air conditioner and outdoor unit of air conditioner |
| PCT/CN2022/077084 WO2022247362A1 (en) | 2021-05-26 | 2022-02-21 | Control method and apparatus for lightning protection of air conditioner, and air conditioner outdoor unit |
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| CN202110581114.XA CN113339982B (en) | 2021-05-26 | 2021-05-26 | Lightning protection control method and device for air conditioner and outdoor unit of air conditioner |
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| JPH01291624A (en) * | 1988-05-18 | 1989-11-24 | Fujitsu Ltd | Protective system for lightning surge interruption |
| CN202141764U (en) * | 2011-06-29 | 2012-02-08 | 宁波东方电子有限公司 | Thunder detecting alarm |
| CN111189496A (en) * | 2020-01-16 | 2020-05-22 | 四川长虹电器股份有限公司 | Lightning protection information on-line monitoring and early warning system for central air-conditioning product |
| CN111550900A (en) * | 2020-04-07 | 2020-08-18 | 宁波奥克斯电气股份有限公司 | Emergency control method for air conditioner |
| CN112744212A (en) * | 2019-10-30 | 2021-05-04 | 比亚迪股份有限公司 | Vehicle control method and device and vehicle |
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|---|---|---|---|---|
| CN113339982B (en) * | 2021-05-26 | 2022-12-23 | 青岛海尔空调器有限总公司 | Lightning protection control method and device for air conditioner and outdoor unit of air conditioner |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01291624A (en) * | 1988-05-18 | 1989-11-24 | Fujitsu Ltd | Protective system for lightning surge interruption |
| CN202141764U (en) * | 2011-06-29 | 2012-02-08 | 宁波东方电子有限公司 | Thunder detecting alarm |
| CN112744212A (en) * | 2019-10-30 | 2021-05-04 | 比亚迪股份有限公司 | Vehicle control method and device and vehicle |
| CN111189496A (en) * | 2020-01-16 | 2020-05-22 | 四川长虹电器股份有限公司 | Lightning protection information on-line monitoring and early warning system for central air-conditioning product |
| CN111550900A (en) * | 2020-04-07 | 2020-08-18 | 宁波奥克斯电气股份有限公司 | Emergency control method for air conditioner |
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