CN110360713B - Air conditioner control method and device based on weather and air conditioner - Google Patents
Air conditioner control method and device based on weather and air conditioner Download PDFInfo
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- CN110360713B CN110360713B CN201810311714.2A CN201810311714A CN110360713B CN 110360713 B CN110360713 B CN 110360713B CN 201810311714 A CN201810311714 A CN 201810311714A CN 110360713 B CN110360713 B CN 110360713B
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000010438 heat treatment Methods 0.000 claims abstract description 163
- 239000003507 refrigerant Substances 0.000 claims abstract description 62
- 230000008859 change Effects 0.000 claims description 71
- 238000004804 winding Methods 0.000 claims description 52
- 238000005485 electric heating Methods 0.000 claims description 22
- 238000004378 air conditioning Methods 0.000 claims description 14
- 230000001174 ascending effect Effects 0.000 claims description 8
- 230000001276 controlling effect Effects 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000005284 excitation Effects 0.000 claims 2
- 239000007788 liquid Substances 0.000 description 42
- 238000002360 preparation method Methods 0.000 description 8
- 230000003247 decreasing effect Effects 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 239000010687 lubricating oil Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003121 nonmonotonic effect Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
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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
- F24F11/46—Improving electric energy efficiency or saving
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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
- F24F11/48—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring prior to normal operation, e.g. pre-heating or pre-cooling
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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
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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
- F24F2130/10—Weather information or forecasts
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Abstract
The invention provides a weather-based air conditioner control method and device and an air conditioner, wherein the weather-based air conditioner control method comprises the following steps: determining whether the air conditioner is in a standby state, and acquiring weather parameters of the environment to which the air conditioner belongs when the air conditioner is in the standby state; and controlling a heating process of heating a refrigerant of a compressor of the air conditioner according to the air temperature variation trend in the weather parameters. The invention also provides a weather-based air conditioner control device and an air conditioner with the device. The invention adjusts the heating state of the compressor by combining the weather parameters, thereby reducing the standby power consumption of the air conditioner during standby.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to a weather-based air conditioner control method and device and an air conditioner.
Background
With the gradual improvement of the living standard of people and the rapid development of the household appliance industry, the air conditioner becomes one of the common household appliances.
When the air conditioner is in a standby state and the outdoor temperature is low, the refrigerant in the air conditioning system generally has a refrigerant migration phenomenon, and a large amount of liquid refrigerant can migrate to the compressor and is mutually soluble with the lubricating oil, so that the lubricating oil is diluted, the performance of the compressor is reduced, and the risk of liquid impact of the compressor is caused. In the prior art, in order to solve the above problems and prevent the liquid impact problem of the compressor, when the air conditioner is in a standby state, the electric heating belt needs to be opened all the time, and the liquid refrigerant is heated by the electric heating belt, so that the refrigerant absorbs heat and evaporates into a gas state to prevent the liquid impact of the compressor. However, the prior art solutions have two problems, the first is: the long-time starting of the electric heating leads to large standby power consumption of the air conditioner, and in fact 70% of the standby power consumption of the air conditioner comes from the electric heating belt; secondly, the following steps: the heating rate of the electric heating belt is often slower, the evaporation rate of the refrigerant is lower, and before the air conditioner is started, no liquid refrigerant is required to be ensured in the compressor, so that a large amount of time is consumed, the refrigerant is ensured to be completely gasified, and the air conditioner unit needs a long time to prepare.
Therefore, reducing standby power consumption when the air conditioner is in standby and reducing preparation time of the air conditioner are problems to be solved urgently in the prior art.
Disclosure of Invention
The invention provides a weather-based air conditioner control method, which is used for reducing the power consumption of an air conditioner during standby.
In order to solve the above problems, as an aspect of the present invention, there is provided a weather-based air conditioning control method including:
determining whether the air conditioner is in a standby state;
when the air conditioner is in a standby state, acquiring weather parameters of the environment to which the air conditioner belongs;
and controlling a heating process of heating a refrigerant of a compressor of the air conditioner according to the air temperature variation trend in the weather parameters.
Optionally, the obtaining of the weather parameter of the environment to which the air conditioner belongs includes:
acquiring a temperature change curve of a current area where the air conditioner is located based on the big data;
acquiring a temperature interval and a temperature change trend of a temperature change curve;
the highest and lowest temperatures in the temperature interval are obtained.
Optionally, according to the trend of air temperature change in the weather parameter, the heating process of refrigerant heating of the compressor of the air conditioner is controlled, including:
when the lowest temperature is not less than the first preset temperature, the heating function of the compressor is closed;
when the highest temperature is lower than a first preset temperature, the lowest temperature is not lower than a second preset temperature, and the temperature change trend is an ascending trend, the compressor is heated in a first gear;
when the highest temperature is lower than a first preset temperature, the lowest temperature is not lower than a second preset temperature, and the temperature change trend is a descending trend, closing the heating function of the compressor;
when the highest temperature is lower than a second preset temperature and the lowest temperature is not lower than a third preset temperature, heating the compressor at a second level;
when the highest temperature is lower than a third preset temperature, heating the compressor in three stages;
the first preset temperature is higher than the second preset temperature, and the second preset temperature is higher than the third preset temperature.
Optionally, the first preset temperature is greater than 5 ℃ and less than 15 ℃;
the second preset temperature is higher than-15 ℃ and not higher than 5 ℃;
the third preset temperature is not more than-15 ℃.
Optionally, before determining whether the air conditioner is in the standby state, the method further includes:
acquiring a current task and task time of an air conditioner;
acquiring a preset task and preset time of an air conditioner;
a standby period of the air conditioner is determined,
wherein, the working state of the air conditioner in the standby time interval is the standby state.
Optionally, a heating method for heating a refrigerant in a compressor of an air conditioner includes: at least one of electric heating belt heating and motor winding heating.
Optionally, when the motor winding is used for heating, the power for heating the motor winding is increased by increasing the exciting current in the motor winding of the compressor.
Optionally, when the air conditioner is in a non-standby state, the heating function of the compressor is turned off.
The invention also provides a weather-based air conditioner control device, which comprises:
the system comprises an acquisition module, a storage module and a control module, wherein the acquisition module is used for determining whether the air conditioner is in a standby state or not and is used for acquiring weather parameters of the environment to which the air conditioner belongs when the air conditioner is in the standby state;
and the control module is used for controlling the heating process of refrigerant heating of the compressor of the air conditioner according to the air temperature variation trend in the weather parameters.
Optionally, the obtaining module includes a weather obtaining unit, configured to obtain, when the air conditioner is in a standby state, a temperature change curve of a current area where the air conditioner is located based on the big data, obtain a temperature interval and a temperature change trend of the temperature change curve, and obtain a highest temperature and a lowest temperature in the temperature interval.
Optionally, the control module includes an adjusting unit, configured to:
when the lowest temperature is not less than the first preset temperature, the heating function of the compressor is closed;
when the highest temperature is lower than a first preset temperature, the lowest temperature is not lower than a second preset temperature, and the temperature change trend is an ascending trend, the compressor is heated in a first gear;
when the highest temperature is lower than a first preset temperature, the lowest temperature is not lower than a second preset temperature, and the temperature change trend is a descending trend, closing the heating function of the compressor;
when the highest temperature is lower than a second preset temperature and the lowest temperature is not lower than a third preset temperature, heating the compressor at a second level;
when the highest temperature is lower than a third preset temperature, heating the compressor in three stages;
the first preset temperature is higher than the second preset temperature, and the second preset temperature is higher than the third preset temperature.
Optionally, the first preset temperature is greater than 5 ℃ and less than 15 ℃;
the second preset temperature is higher than-15 ℃ and not higher than 5 ℃;
the third preset temperature is not more than-15 ℃.
Optionally, the obtaining module further includes: a task detection unit;
the task detection unit is used for: the method comprises the steps of obtaining a current task and task time of the air conditioner, obtaining a preset task and preset time of the air conditioner, and determining a standby time period of the air conditioner, wherein the working state of the air conditioner in the standby time period is a standby state.
Optionally, a heating method for heating a refrigerant in a compressor of an air conditioner includes: at least one of electric heating belt heating and motor winding heating.
Optionally, when the motor winding is used for heating, the control module increases the heating power of the motor winding by increasing the exciting current in the motor winding of the compressor.
Optionally, when the air conditioner is in a non-standby state, the control module turns off the heating function of the compressor.
The invention also provides an air conditioner, and the standby control device of the air conditioner based on the weather provided by the invention is adopted.
Compared with the prior art, the air conditioner control method and device based on weather and the air conditioner have the following beneficial effects that:
1) the standby power consumption of the air conditioner is reduced, and the on-time of electric heating in the standby state is properly reduced by predicting the change of the weather temperature, so that the standby power consumption is greatly reduced.
2) The debugging preparation period of the compressor is shortened, and the compressor needs to be preheated firstly when the air conditioning unit is debugged, so that the compressor can be started safely without a refrigerant inside. By adding the motor winding for heating, the multi-gear adjustment of the heating power is realized, and the debugging preparation period of the compressor can be greatly shortened.
3) The reliability of the compressor is improved, the winding heating function can be used as a standby scheme for heating the compressor, and when the electric heating belt is abnormal, the reliability of the compressor is ensured through the winding heating function.
Drawings
FIG. 1 is a flow chart of a weather-based air conditioning control method according to an embodiment of the present invention;
fig. 2 is a flowchart of acquiring weather parameters of an environment to which an air conditioner belongs according to an embodiment of the present invention;
fig. 3 is a diagram illustrating the effect of heating control in the preferred embodiment of the present invention.
FIG. 4 is a block diagram of a weather-based air conditioning control apparatus according to an embodiment of the present invention;
fig. 5 is a block diagram of another weather-based air conditioning control apparatus according to an embodiment of the present invention.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
In the prior art, when the air conditioner is in a standby state, the air conditioner is not completely stopped, and some components are still in an operating state, wherein about 70% of standby energy consumption is used for maintaining the operation of the electric heating belt. This is because, when the outdoor environment temperature is low and the air conditioner is in a standby state, the refrigerant in the air conditioner, that is, the refrigerant is distributed in the air conditioner, such as the evaporator, the compressor, the condenser and other components, the refrigerant will slowly migrate from the condenser to the evaporator over time, and the refrigerant in the evaporator will also slowly migrate to the compressor, if the compressor is not heated, the compressor will have a large amount of liquid refrigerant, the liquid refrigerant will be mutually soluble with the lubricating oil, resulting in the lubricating oil being diluted, furthermore, when the compressor is running, the liquid refrigerant will enter the compressor cylinder at a high speed along with the suction, due to the impact and incompressible of the liquid, the suction valve plate will be excessively bent or broken, and when the liquid which is not timely evaporated and discharged from the cylinder is compressed by the piston, the huge pressure which appears instantaneously will cause the deformation and damage of the force receiving member, these force-bearing parts include suction and discharge valve plates, valve plate pads and the like, namely, the liquid impact phenomenon occurs.
The inventor of the present invention has observed that, when the outdoor environment temperature is high, for the air conditioner in the standby state, the inside of the compressor does not have a large amount of liquid refrigerant, and at this time, it is not necessary to electrically heat the compressor, and the electrical heating of the compressor wastes energy, and moreover, in the case of different environment temperatures, the power of the electrical heating should be different, and in the prior art, the power of the electrical heating is mostly a constant value.
The inventor further thinks that if the ambient temperature can be monitored or predicted in real time, the heating power of the compressor can be automatically adjusted, so that energy is saved and unnecessary waste is avoided.
Fig. 1 is a flowchart of a weather-based air conditioner standby control method in an embodiment of the present invention, and as shown in fig. 1, the weather-based air conditioner standby control method provided by the present invention includes:
s10: it is determined whether the air conditioner is in a standby state.
Specifically, the standby state is one of the air conditioner working states, the working state of the air conditioner can be judged by detecting the working voltage, the working current or the power of each component of the air conditioner, or by detecting a task provided in the air conditioner controller, and the working state of the air conditioner can be a cooling state, a heating state, a standby state, a shutdown state, or the like. The detection result of the working state may further include the time when the air conditioner is in a cooling state, a heating state, a standby state, a shutdown state, and the like.
S20: and when the air conditioner is in a standby state, acquiring the weather parameters of the environment to which the air conditioner belongs.
Specifically, the area where the air conditioner is located may be obtained first, the area where the air conditioner is located may be determined by a positioning module in the air conditioner, or may be connected to a limited or wireless network through a communication module in the air conditioner, the area where the air conditioner is located may be determined by the network, the area where the air conditioner is located may be preset when the air conditioner is installed, or the area where the air conditioner is located may be manually set, and optionally, the area where the air conditioner is located may be determined by GPS positioning. After the area where the air conditioner is located is determined, the weather parameters of the air conditioner in the standby time period can be obtained through the network, for example, the area where the air conditioner is located is Tianjin, and the weather forecast of the Tianjin is obtained through the network, so that the weather parameters of the Tianjin are determined, and the weather parameters can include the temperature interval and the temperature change trend, and can also include the weather conditions such as snowfall, rainfall, wind speed and the like. Optionally, the weather parameters may also be manually input, for example, a weather parameter module may be set in a control panel of the air conditioner, and a temperature input button and a time or a time period corresponding to the weather may be set correspondingly.
S30: and controlling a heating process of heating a refrigerant of a compressor of the air conditioner according to the air temperature variation trend in the weather parameters.
Specifically, after the weather parameters of the area where the air conditioner is located are obtained, whether the compressor is heated or not and the heating rate are determined by determining the weather changes, such as temperature changes. In addition, optionally, when the outdoor temperature environment is low, for example, in regions such as desert river in north of China, the average temperature of the outdoor environment in winter is-30 ℃, and the lowest temperature can reach-50 ℃, even if the air conditioner is in a non-standby state, the refrigerant or the lubricating oil in the compressor can be liquefied into a liquid state due to low temperature, so that the compressor is damaged due to liquid impact, and therefore the compressor may be heated. In addition, when the humidity of the surrounding environment is high, the compressor can be heated, and the temperature of the surface of the compressor is increased, so that the water vapor in the environment is prevented from being liquefied on the surface of the compressor, and the compressor is prevented from being corroded by the water vapor.
Preferably, in some optional embodiments, fig. 2 is a flowchart of acquiring weather parameters of an environment to which an air conditioner belongs in an embodiment of the present invention, and as shown in fig. 2, acquiring the weather parameters of a first location in a first time period includes:
s21: and acquiring a temperature change curve of the current region where the air conditioner is located based on the big data.
Specifically, assuming that the air conditioner is in a standby state, a temperature change curve of the current position in a time period of 1 hour or more from the current time is obtained, and since the temperature change tends to be vibrating, the obtained temperature change curve tends to be zigzag, and may be corrected, for example, the current time is 10 o ' clock, the temperature is 10 ℃, the obtained temperature change curve shows that the temperature will decrease by 1 ℃ to 9 ℃ in five minutes from 10 o ' clock 5 to 10 o ' clock, and the temperature will decrease by 10 ℃ in the remaining time between 10 o ' clock and 11 o ' clock, at this time, since the time of temperature decrease is short, the decrease range is low, and the temperature will quickly recover after decreasing, it can be considered that 10 o ' clock and 11 o ' clock are all 10 ℃. That is, within a preset time period, for example, 1 hour, if the starting temperature and the ending temperature within the time period are the same, the temperature may be regarded as unchanged when the temperature variation amplitude is smaller than the preset amplitude and the variation time is smaller than the preset time within the time period. Because when the temperature oscillation frequency is too fast but the temperature change amplitude is small, if the heating state of the compressor is frequently adjusted, the heating part is easily damaged, and by adopting the method, the heating part can be protected and the damage can be prevented without reducing the technical effect of the invention.
S22: and acquiring a temperature interval and a temperature change trend of the temperature change curve.
Specifically, the temperature interval herein refers to a range of temperature change, and the temperature change trend refers to an upward trend or a downward trend of the temperature in the first time period.
S23: and acquiring the highest temperature and the lowest temperature in the temperature interval.
Preferably, in some optional embodiments, the controlling, according to a trend of air temperature change in the weather parameter, a heating process of heating a refrigerant of a compressor of the air conditioner includes:
and when the working state of the air conditioner is in a standby state and the lowest temperature is not less than the first preset temperature, the heating function of the compressor is closed. Under the condition, the ambient temperature is higher, the liquid refrigerant in the compressor is less, the compressor in a standby state can be directly started, the risk is avoided, the liquid impact problem cannot occur, and therefore the compressor does not need to be heated, and the energy is saved.
When the working state of the air conditioner is a standby state, the highest temperature is less than a first preset temperature, the lowest temperature is not less than a second preset temperature, and the temperature change trend is an ascending trend, the compressor is heated in a first gear. The refrigerant in the air conditioner is usually stored in a part with a large volume or without a complicated mechanical structure inside, such as a heat exchanger, an oil separator or a gas-liquid separator, and because the compressor has a complicated mechanical structure inside, the refrigerant needs a large pressure difference to enter the compressor. In the process of gradually rising the temperature, the refrigerant stored in the heat exchanger or the gas-liquid separator and the like can be evaporated to cause pressure increase, and then the refrigerant can slowly migrate into the compressor, so that the compressor needs to be heated at the moment, thereby preventing the liquid impact problem of the compressor.
And when the working state of the air conditioner is a standby state, the highest temperature is less than the first preset temperature, the lowest temperature is not less than the second preset temperature, and the temperature change trend is a descending trend, the heating function of the compressor is closed. When the ambient temperature is between the first preset temperature and the second preset temperature and the temperature is in a descending trend, more refrigerants in the air conditioner can be transferred to the heat exchanger or the gas-liquid separator instead of being stored in the compressor, so that in the temperature descending process, less and less liquid refrigerants in the compressor can be used without heating.
And when the working state of the air conditioner is a standby state, the highest temperature is lower than the second preset temperature, and the lowest temperature is not lower than the third preset temperature, the compressor is heated in a second gear. Because the ambient temperature is too low at this moment, the compressor is judged to have more liquid refrigerants, and the second-gear winding needs to be started for heating.
When the working state of the air conditioner is a standby state and the highest temperature is lower than a third preset temperature, the compressor is heated in three stages, and because the environment temperature is extremely low, a large amount of liquid refrigerants exist in the compressor, and the three-stage winding needs to be started for heating. In the prior art, the temperature of the surrounding environment is not considered when the compressor is heated, and when the temperature of the surrounding environment is extremely low, the heating power cannot be increased, so that the liquid impact problem can occur even if the compressor is heated, and the compressor is damaged.
In the invention, the first preset temperature is higher than the second preset temperature, and the second preset temperature is higher than the third preset temperature. Preferably, the first preset temperature is greater than 5 ℃ and less than 15 ℃; the second preset temperature is higher than-15 ℃ and not higher than 5 ℃; the third preset temperature is not more than-15 ℃.
It should be noted that the acquired temperature change curve is not necessarily a monotonic curve, and may still be a non-monotonic curve even after correction, that is, the ambient temperature may be increased first and then decreased, in this case, the temperature change curve may be cut, for example, a temperature change curve in a time range from 10 to 20 points is acquired, but the temperature from 10 to 15 points is in an increased state, and the temperature from 15 to 20 points is in a decreased state, and the temperature change curve is cut at the 15 point position to form two sub-temperature change curves, including a monotonically increasing curve from 10 to 15 points and a monotonically decreasing curve from 15 to 20 points, and then the compressor heating state in a time range from 10 to 15 points is set first, and then the compressor heating state in a time range from 15 to 20 points is set. For a monotonically changing temperature change curve, the temperature range may not satisfy the above determination condition, for example, in a time period from 10 to 15 points, the temperature rises from being less than the third preset temperature to being greater than the first preset temperature, at this time, the temperature change curve may be cut again, so that the temperature range of the cut temperature change curve satisfies the above determination condition, that is, the temperature range satisfies: less than the third preset temperature, between the third preset temperature and the second preset temperature, between the second preset temperature and the first preset temperature, or more than the first preset temperature.
Preferably, in some optional embodiments, before determining whether the air conditioner is in a standby state, the method further includes: acquiring a current task and task time of an air conditioner; acquiring a preset task and preset time of an air conditioner; according to a preset task and preset time, obtaining a standby time period of the air conditioner in a first time period; determining a standby time period of the air conditioner, wherein the working state of the air conditioner in the standby time period is a standby state. Specifically, when the air conditioner is in a working state, no matter in a heating state or a cooling state, because the compressor is in the working state, the compressor can generate heat, and in most of the environment temperature range, the compressor does not need to be additionally heated, so that the current task, the preset task and the time of each task of the air conditioner are obtained firstly, the time of the air conditioner in a standby state can be known, and the heating process of heating the refrigerant of the compressor of the air conditioner is controlled only when the air conditioner is in the standby state. Preferably, when the air conditioner is in a non-standby state, the heating function of the compressor is turned off, thereby saving energy and preventing energy waste.
Preferably, in some optional embodiments, the heating method for heating the refrigerant of the compressor of the air conditioner includes: at least one of electric heating belt heating and motor winding heating. In the invention, the heating power can be adjusted in multiple gears by adopting winding heating, the debugging preparation period of the compressor can be greatly shortened, the normal start of the compressor can be ensured even if the electric heating is abnormal, and the reliability of the compressor is ensured by the winding heating function.
Preferably, when the motor winding heating is adopted, the power for heating the motor winding is increased by increasing the exciting current in the motor winding of the compressor. In the invention, the power of the winding heating is controlled by adjusting the size of the exciting current in the winding heating, so that the first-gear heating, the second-gear heating and the third-gear heating are realized, the control is simple, the realization is convenient, and the safety degree is high.
The following presents a preferred embodiment of the present invention:
when the air conditioning unit needs to enter a standby state, a weather linkage heating control mode is entered, and at the moment, the air conditioning system acquires weather temperature change parameters of a local area based on big data, and judges the future T hours, the air temperature interval of the local area and the change trend of the air temperature.
And if the air temperature interval of the local area is greater than the first preset temperature Ta in the future T hours, the heating function of the compressor is turned off. Because the ambient temperature is higher in the future T hours, the liquid refrigerant in the compressor is judged to be less at the moment, and the compressor is directly started without risk.
And if the temperature interval of the local area is smaller than the first preset temperature Ta and larger than the second preset temperature Tb and the temperature change is in an ascending trend in the future T hours, the compressor starts the first-gear winding to heat. Because the ambient temperature is lower in the future T hours, but the air temperature will gradually rise, and at this moment, it is judged that more liquid refrigerants exist in the compressor along with the temperature rise, and a first-gear winding needs to be started for heating.
And if the temperature interval of the local area is smaller than the first preset temperature Ta and larger than the second preset temperature Tb and the temperature change is in a descending trend within T hours in the future, the heating function of the compressor is turned off. Because the ambient temperature is lower in the future T hours and the air temperature can be gradually reduced, the liquid refrigerant in the compressor is judged to be less at the moment, and the compressor is directly started without risk.
And if the temperature interval of the local area is less than the second preset temperature Tb and greater than the third preset temperature Tc within the future T hours, the compressor starts the second-gear winding to heat. Because the ambient temperature is too low in the future T hours, the compressor is judged to have more liquid refrigerants, and the second-gear winding needs to be started for heating.
And if the air temperature interval of the local area is less than the third preset temperature Tc in the future T hours, the compressor starts the third-gear winding to heat. Because the ambient temperature is in a low temperature state in the future T hours, a large amount of liquid refrigerants exist in the compressor, and the three-gear winding needs to be started for heating.
Fig. 3 is a diagram of a heating control effect in a preferred embodiment of the present invention, and a specific implementation effect is as shown in fig. 3, where the ambient temperature of a certain place and a day is obtained based on big data, and as the outdoor ambient temperature changes, the heating function is always on when a conventional method is adopted, and when compared with a conventional heating control scheme, the total time for turning on the heating function is shorter, thereby reducing standby power consumption. The winding heating function that this scheme relates to, through the motor winding to the compressor circular telegram with exciting current, make motor winding generate heat. By changing the current, the adjustable heating function of multiple gears can be realized. Compared with the traditional electric heating belt, the electric heating belt has the following advantages: firstly, the heating speed is higher, and the debugging preparation period of the compressor is shortened; second, a backup heating function. When the electric heating belt works abnormally, the winding can work normally by heating, and the reliability of the compressor is ensured.
The invention further provides an air conditioner control device based on the weather. Fig. 4 is a block diagram of a weather-based air conditioner control device according to an embodiment of the present invention, and as shown in fig. 4, the weather-based air conditioner standby control device according to the present invention includes:
an obtaining module 100, configured to determine whether the air conditioner is in a standby state, and obtain a weather parameter of an environment to which the air conditioner belongs when the air conditioner is in the standby state;
specifically, the standby state is one of the air conditioner working states, the working state of the air conditioner can be judged by detecting the working voltage, the working current or the power of each component of the air conditioner, or by detecting a task provided in the air conditioner controller, and the working state of the air conditioner can be a cooling state, a heating state, a standby state, a shutdown state, or the like. The detection result of the working state may further include the time when the air conditioner is in a cooling state, a heating state, a standby state, a shutdown state, and the like. The area where the air conditioner is located can be obtained firstly, the area where the air conditioner is located can be determined through a positioning module in the air conditioner, the area where the air conditioner is located can also be connected with a limited or wireless network through a communication module in the air conditioner, the area where the air conditioner is located can also be determined through the network, the area where the air conditioner is located is preset when the air conditioner is installed, or the area where the air conditioner is located is manually set, and optionally, the area where the air conditioner is located can be determined through GPS positioning. After the area where the air conditioner is located is determined, the weather parameters of the air conditioner in the standby time period can be obtained through the network, for example, the area where the air conditioner is located is Tianjin, and the weather forecast of the Tianjin is obtained through the network, so that the weather parameters of the Tianjin are determined, and the weather parameters can include the temperature interval and the temperature change trend, and can also include the weather conditions such as snowfall, rainfall, wind speed and the like. Optionally, the weather parameters may also be manually input, for example, a weather parameter module may be set in a control panel of the air conditioner, and a temperature input button and a time or a time period corresponding to the weather may be set correspondingly.
And the control module 200 is used for controlling a heating process of heating a refrigerant of a compressor of the air conditioner according to the air temperature variation trend in the weather parameters.
Specifically, after the weather parameters of the area where the air conditioner is located are obtained, whether the compressor is heated or not and the heating rate are determined by determining the weather changes, such as temperature changes. In addition, optionally, when the outdoor temperature environment is low, for example, in regions such as desert river in north of China, the average temperature of the outdoor environment in winter is-30 ℃, and the lowest temperature can reach-50 ℃, even if the air conditioner is in a non-standby state, the refrigerant or the lubricating oil in the compressor can be liquefied into a liquid state due to low temperature, so that the compressor is damaged due to liquid impact, and therefore the compressor may be heated. In addition, when the humidity of the surrounding environment is high, the compressor can be heated, and the temperature of the surface of the compressor is increased, so that the water vapor in the environment is prevented from being liquefied on the surface of the compressor, and the compressor is prevented from being corroded by the water vapor.
Preferably, in some optional embodiments, fig. 5 is a composition diagram of another weather-based air conditioner control device in the embodiments of the present invention, and as shown in fig. 5, the obtaining module includes a weather obtaining unit, configured to obtain, when the air conditioner is in a standby state, a temperature change curve of a current area where the air conditioner is located based on big data, obtain a temperature section and a temperature change trend of the temperature change curve, and obtain a highest temperature and a lowest temperature in the temperature section.
Assuming that the air conditioner is in a standby state, a temperature change curve of the current position in a period of 1 hour or more from the current time is obtained, and the temperature change is prone to be vibrating, so the obtained temperature change curve is prone to be zigzag, and can be corrected, for example, the temperature change curve is obtained in 10 o 'clock and 10 o' clock, and the obtained temperature change curve shows that the temperature will be reduced by 1 ℃ to 9 ℃ in five minutes from 10 o 'clock 5 to 10 o' clock and the temperature is 10 ℃ in the rest time between 10 o 'clock and 11 o' clock, and at this time, the temperature is reduced for a short time and in a low amplitude, and is recovered quickly after being reduced, so 10 o 'clock and 11 o' clock are all considered to be 10 ℃. That is, within a preset time period, for example, 1 hour, if the starting temperature and the ending temperature within the time period are the same, the temperature may be regarded as unchanged when the temperature variation amplitude is smaller than the preset amplitude and the variation time is smaller than the preset time within the time period. Because when the temperature oscillation frequency is too fast but the temperature change amplitude is small, if the heating state of the compressor is frequently adjusted, the heating part is easily damaged, and by adopting the method, the heating part can be protected and the damage can be prevented without reducing the technical effect of the invention. The temperature interval refers to a range of temperature change, and the temperature change trend refers to that the temperature is in an ascending trend or a descending trend in the first time period.
Preferably, in some alternative embodiments, as shown in fig. 5, the control module 200 includes a regulating unit 210 for:
and when the working state of the air conditioner is in a standby state and the lowest temperature is not less than the first preset temperature, the heating function of the compressor is closed. Under the condition, the ambient temperature is higher, the liquid refrigerant in the compressor is less, the compressor in a standby state can be directly started, the risk is avoided, the liquid impact problem cannot occur, and therefore the compressor does not need to be heated, and the energy is saved.
When the working state of the air conditioner is a standby state, the highest temperature is less than a first preset temperature, the lowest temperature is not less than a second preset temperature, and the temperature change trend is an ascending trend, the compressor is heated in a first gear. The refrigerant in the air conditioner is usually stored in a part with a large volume or without a complicated mechanical structure inside, such as a heat exchanger, an oil separator or a gas-liquid separator, and because the compressor has a complicated mechanical structure inside, the refrigerant needs a large pressure difference to enter the compressor. In the process of gradually rising the temperature, the refrigerant stored in the heat exchanger or the gas-liquid separator and the like can be evaporated to cause pressure increase, and then the refrigerant can slowly migrate into the compressor, so that the compressor needs to be heated at the moment, thereby preventing the liquid impact problem of the compressor.
And when the working state of the air conditioner is a standby state, the highest temperature is less than the first preset temperature, the lowest temperature is not less than the second preset temperature, and the temperature change trend is a descending trend, the heating function of the compressor is closed. When the ambient temperature is between the first preset temperature and the second preset temperature and the temperature is in a descending trend, more refrigerants in the air conditioner can be transferred to the heat exchanger or the gas-liquid separator instead of being stored in the compressor, so that in the temperature descending process, less and less liquid refrigerants in the compressor can be used without heating.
And when the working state of the air conditioner is a standby state, the highest temperature is lower than the second preset temperature, and the lowest temperature is not lower than the third preset temperature, the compressor is heated in a second gear. Because the ambient temperature is too low at this moment, the compressor is judged to have more liquid refrigerants, and the second-gear winding needs to be started for heating.
When the working state of the air conditioner is a standby state and the highest temperature is lower than a third preset temperature, the compressor is heated in three stages, and because the environment temperature is extremely low, a large amount of liquid refrigerants exist in the compressor, and the three-stage winding needs to be started for heating. In the prior art, the temperature of the surrounding environment is not considered when the compressor is heated, and when the temperature of the surrounding environment is extremely low, the heating power cannot be increased, so that the liquid impact problem can occur even if the compressor is heated, and the compressor is damaged.
In the invention, the first preset temperature is higher than the second preset temperature, and the second preset temperature is higher than the third preset temperature. Preferably, the first preset temperature is greater than 5 ℃ and less than 15 ℃; the second preset temperature is higher than-15 ℃ and not higher than 5 ℃; the third preset temperature is not more than-15 ℃.
It should be noted that the acquired temperature change curve is not necessarily a monotonic curve, and may still be a non-monotonic curve even after correction, that is, the ambient temperature may be increased first and then decreased, in this case, the temperature change curve may be cut, for example, a temperature change curve in a time range from 10 to 20 points is acquired, but the temperature from 10 to 15 points is in an increased state, and the temperature from 15 to 20 points is in a decreased state, and the temperature change curve is cut at the 15 point position to form two sub-temperature change curves, including a monotonically increasing curve from 10 to 15 points and a monotonically decreasing curve from 15 to 20 points, and then the compressor heating state in a time range from 10 to 15 points is set first, and then the compressor heating state in a time range from 15 to 20 points is set. For a monotonically changing temperature change curve, the temperature range may not satisfy the above determination condition, for example, in a time period from 10 to 15 points, the temperature rises from being less than the third preset temperature to being greater than the first preset temperature, at this time, the temperature change curve may be cut again, so that the temperature range of the cut temperature change curve satisfies the above determination condition, that is, the temperature range satisfies: less than the third preset temperature, between the third preset temperature and the second preset temperature, between the second preset temperature and the first preset temperature, or more than the first preset temperature.
Preferably, in some optional embodiments, please continue to refer to fig. 5, the obtaining module 100 further includes: a task detection unit 120, configured to: acquiring a current task and task time of an air conditioner; acquiring a preset task and preset time of an air conditioner; according to a preset task and preset time, obtaining a standby time period of the air conditioner in a first time period; determining a standby time period of the air conditioner, wherein the working state of the air conditioner in the standby time period is a standby state. Specifically, when the air conditioner is in a working state, no matter in a heating state or a cooling state, because the compressor is in the working state, the compressor can generate heat, and in most of the environment temperature range, the compressor does not need to be additionally heated, so that the current task, the preset task and the time of each task of the air conditioner are obtained firstly, the time of the air conditioner in a standby state can be known, and the heating process of heating the refrigerant of the compressor of the air conditioner is controlled only when the air conditioner is in the standby state. Preferably, when the air conditioner is in a non-standby state, the heating function of the compressor is turned off, thereby saving energy and preventing energy waste.
Preferably, in some optional embodiments, the air conditioner control device performs a refrigerant heating mode on a compressor of the air conditioner, and the refrigerant heating mode includes: at least one of electric heating belt heating and motor winding heating. In the invention, the heating power can be adjusted in multiple gears by adopting winding heating, the debugging preparation period of the compressor can be greatly shortened, the normal start of the compressor can be ensured even if the electric heating is abnormal, and the reliability of the compressor is ensured by the winding heating function.
Preferably, when motor winding heating is employed, the control module 200 increases the power of the motor winding heating by increasing the field current in the compressor motor windings. In the invention, the power of the winding heating is controlled by adjusting the size of the exciting current in the winding heating, so that the first-gear heating, the second-gear heating and the third-gear heating are realized, the control is simple, the realization is convenient, and the safety degree is high.
The invention also provides an air conditioner which comprises any one of the weather-based air conditioner control devices provided by the invention, and the air conditioner has all the advantages of the weather-based air conditioner control device provided by the invention, and is not repeated herein.
In summary, in order to solve the problem of large power consumption caused by turning on the electric heating belt for a long time during the standby time of the air conditioner, the invention provides a weather-based air conditioner control method and device and an air conditioner, and compared with the prior art, the air conditioner control method and device have the following beneficial effects:
1) the standby power consumption of the air conditioner is reduced, and the on-time of electric heating in the standby state is properly reduced by predicting the change of the weather temperature, so that the standby power consumption is greatly reduced.
2) The debugging preparation period of the compressor is shortened, and the compressor needs to be preheated firstly when the air conditioning unit is debugged, so that the compressor can be started safely without a refrigerant inside. By adding the motor winding for heating, the multi-gear adjustment of the heating power is realized, and the debugging preparation period of the compressor can be greatly shortened.
3) The reliability of the compressor is improved, the winding heating function can be used as a standby scheme for heating the compressor, and when the electric heating belt is abnormal, the reliability of the compressor is ensured through the winding heating function.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (13)
1. A weather-based air conditioner control method is characterized by comprising the following steps:
determining whether the air conditioner is in a standby state;
when the air conditioner is in a standby state, acquiring weather parameters of the environment to which the air conditioner belongs;
controlling a heating process of heating a refrigerant of a compressor of the air conditioner according to the air temperature variation trend in the weather parameters;
acquiring weather parameters of the environment to which the air conditioner belongs, wherein the weather parameters comprise:
acquiring a temperature change curve of a current area where the air conditioner is located based on the big data;
acquiring a temperature interval and a temperature change trend of the temperature change curve;
acquiring the highest temperature and the lowest temperature in the temperature interval;
controlling a heating process of heating a refrigerant of a compressor of the air conditioner according to the air temperature variation trend in the weather parameters, wherein the heating process comprises the following steps:
when the lowest temperature is not less than a first preset temperature, the heating function of the compressor is closed;
when the highest temperature is lower than the first preset temperature, the lowest temperature is not lower than a second preset temperature, and the temperature change trend is an ascending trend, performing first-stage heating on the compressor;
when the highest temperature is lower than the first preset temperature, the lowest temperature is not lower than the second preset temperature, and the temperature change trend is a descending trend, closing the heating function of the compressor;
when the highest temperature is lower than the second preset temperature and the lowest temperature is not lower than a third preset temperature, heating the compressor at a second gear;
when the maximum temperature is lower than the third preset temperature, carrying out third-gear heating on the compressor;
the first preset temperature is higher than the second preset temperature, and the second preset temperature is higher than the third preset temperature.
2. The weather-based air conditioning control method of claim 1,
the first preset temperature is more than 5 ℃ and less than 15 ℃;
the second preset temperature is more than-15 ℃ and not more than 5 ℃;
the third preset temperature is not more than-15 ℃.
3. The weather-based air conditioner control method according to any one of claims 1 to 2, wherein before determining whether the air conditioner is in the standby state, further comprising:
acquiring a current task and task time of the air conditioner;
acquiring a preset task and preset time of the air conditioner;
determining a standby period of the air conditioner,
wherein the working state of the air conditioner in the standby time period is a standby state.
4. The weather-based air conditioner control method according to any one of claims 1 or 2, wherein a heating method for heating a refrigerant in a compressor of the air conditioner includes: at least one of electric heating belt heating and motor winding heating.
5. The weather-based air conditioning control method of claim 4, wherein the power of the motor winding heating is increased by increasing an excitation current in the compressor motor winding when motor winding heating is employed.
6. The weather-based air conditioner control method of any one of claims 1 to 2 or 5, wherein a heating function of the compressor is turned off when the air conditioner is in a non-standby state.
7. A weather-based air conditioning control apparatus, comprising:
the acquisition module is used for determining whether the air conditioner is in a standby state or not and acquiring weather parameters of the environment to which the air conditioner belongs when the air conditioner is in the standby state;
the control module is used for controlling a heating process of heating a refrigerant of a compressor of the air conditioner according to the air temperature variation trend in the weather parameters;
the acquisition module comprises a weather acquisition unit, a temperature acquisition unit and a control unit, wherein the weather acquisition unit is used for acquiring a temperature change curve of a current area where an air conditioner is located based on big data when the air conditioner is in a standby state, acquiring a temperature interval and a temperature change trend of the temperature change curve, and acquiring the highest temperature and the lowest temperature in the temperature interval;
the control module comprises a regulating unit for:
when the lowest temperature is not less than a first preset temperature, the heating function of the compressor is closed;
when the highest temperature is lower than the first preset temperature, the lowest temperature is not lower than a second preset temperature, and the temperature change trend is an ascending trend, performing first-stage heating on the compressor;
when the highest temperature is lower than the first preset temperature, the lowest temperature is not lower than the second preset temperature, and the temperature change trend is a descending trend, closing the heating function of the compressor;
when the highest temperature is lower than the second preset temperature and the lowest temperature is not lower than a third preset temperature, heating the compressor at a second gear;
when the maximum temperature is lower than the third preset temperature, carrying out third-gear heating on the compressor;
the first preset temperature is higher than the second preset temperature, and the second preset temperature is higher than the third preset temperature.
8. The weather-based climate control apparatus of claim 7,
the first preset temperature is more than 5 ℃ and less than 15 ℃;
the second preset temperature is more than-15 ℃ and not more than 5 ℃;
the third preset temperature is not more than-15 ℃.
9. The weather-based air conditioning control apparatus of any one of claims 7 to 8, wherein the obtaining module further comprises: a task detection unit;
the task detection unit is used for: the method comprises the steps of obtaining the current task and task time of the air conditioner, obtaining the preset task and preset time of the air conditioner, and determining the standby time period of the air conditioner, wherein the working state of the air conditioner in the standby time period is the standby state.
10. The weather-based air conditioning control device according to claim 7 or 8, wherein a heating method of heating a refrigerant in a compressor of the air conditioner includes: at least one of electric heating belt heating and motor winding heating.
11. The weather-based climate control device of claim 10, wherein the control module increases the power of the motor winding heating by increasing an excitation current in the compressor motor winding when motor winding heating is employed.
12. A weather-based air conditioner control device as claimed in any one of claims 7 to 8 or 11, wherein the control module turns off a heating function of the compressor when the air conditioner is in a non-standby state.
13. An air conditioner, comprising: a weather-based climate control device as claimed in any of claims 7 to 12.
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| CN110542181B (en) * | 2019-09-12 | 2021-04-30 | 广东美的制冷设备有限公司 | Operation control method, operation control device, air conditioner, and storage medium |
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| CN111981631A (en) * | 2020-08-19 | 2020-11-24 | 宁波奥克斯电气股份有限公司 | Control method and device for preventing compressor from being hydraulically impacted for air conditioner and air conditioner |
| CN112254279B (en) * | 2020-10-19 | 2021-11-30 | 珠海格力电器股份有限公司 | Control method and device for standby of air conditioner, air conditioner and storage medium |
| CN112728725B (en) * | 2021-01-22 | 2022-02-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Control device and method of compressor and air conditioner |
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| CN113623793B (en) * | 2021-08-23 | 2022-09-16 | 宁波奥克斯电气股份有限公司 | Compressor preheating control method, air conditioner, and computer-readable storage medium |
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