CN107543287B - Air conditioner and control method thereof - Google Patents
Air conditioner and control method thereof Download PDFInfo
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- CN107543287B CN107543287B CN201710736507.7A CN201710736507A CN107543287B CN 107543287 B CN107543287 B CN 107543287B CN 201710736507 A CN201710736507 A CN 201710736507A CN 107543287 B CN107543287 B CN 107543287B
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000010257 thawing Methods 0.000 claims abstract description 122
- 238000004378 air conditioning Methods 0.000 claims abstract description 22
- 238000001514 detection method Methods 0.000 claims description 11
- 239000003507 refrigerant Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 16
- 238000010438 heat treatment Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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Abstract
The invention relates to an air conditioner and a control method thereof, wherein the control method comprises the following steps: acquiring the temperature and the humidity of an outdoor environment where an air conditioning device is located; executing a first defrosting mode when the temperature and the humidity of the outdoor environment meet any one of the following conditions: the temperature of the outdoor environment is higher than a first preset temperature; the temperature of the outdoor environment is lower than a second preset temperature; the temperature of the outdoor environment is higher than or equal to a second preset temperature and lower than or equal to a first preset temperature, and the humidity of the outdoor environment is smaller than a preset humidity threshold value; wherein the second preset temperature is lower than the first preset temperature, and in the first defrosting mode, the compressor operates at a first preset frequency; and when the temperature and the humidity of the outdoor environment do not satisfy all the conditions, executing other defrosting modes, wherein the running frequency of the compressor is higher than the first preset frequency in the other defrosting modes. Therefore, the appropriate defrosting mode can be automatically selected according to the climate difference, and the optimal defrosting effect and defrosting efficiency can be obtained.
Description
Technical Field
The invention relates to the technology of air conditioner defrosting, in particular to an air conditioner and a control method thereof.
Background
When the air conditioner is used for heating in winter, the outdoor heat exchanger exchanges heat with a low-temperature environment, and absorbs heat in an evaporation process. When the surface temperature of the outdoor heat exchanger is lower than the dew point temperature of the environment, condensate water is generated and attached to the area of the outdoor heat exchanger. When the condensed water is gathered to a certain thickness, a frost layer is formed and even ice is formed. If the frost layer or the ice layer is not removed in time, the heat exchange effect of the outdoor heat exchanger is seriously affected, the indoor heating capacity is reduced, the user experience is poorer, and therefore the outdoor heat exchanger needs to be defrosted.
In China, the climates in winter in the south and the north have certain difference, the humidity is high in the winter in the south, and the temperature is higher than that in the north; the north winter is low in humidity, the temperature is more below zero, and particularly in the northeast region, the temperature is below twenty degrees below zero for a long time. Due to the climate difference between the south and the north, and the temperature and the humidity are two factors closely related to the frosting condition of the outdoor heat exchanger, the effect is not good if the same set of defrosting mode is adopted for the air conditioning device used in any area. For example, in order to balance and balance the conditions of various regions, some existing air conditioners may only be applied to regions with temperatures and humidities between the south and north climates in a defrosting mode, and the defrosting effect in the south and the north is not particularly good. For another example, the defrost mode of other existing air conditioners may be applicable only in the south or only in the north.
Disclosure of Invention
An object of the first aspect of the present invention is to overcome at least one of the drawbacks of the prior art and to provide a control method of an air conditioner that is capable of automatically selecting an optimal defrosting mode according to its use environment.
A further object of the first aspect of the invention is to extend the optimal range of use of the air conditioning apparatus.
It is an object of a second aspect of the present invention to provide an air conditioning apparatus.
According to a first aspect of the present invention, there is provided a control method of an air conditioner including:
acquiring the temperature and the humidity of an outdoor environment where the air conditioning device is located;
executing a first defrosting mode when the temperature and the humidity of the outdoor environment meet any one of the following conditions:
the temperature of the outdoor environment is higher than a first preset temperature;
the temperature of the outdoor environment is lower than a second preset temperature;
the temperature of the outdoor environment is higher than or equal to a second preset temperature and lower than or equal to a first preset temperature, and the humidity of the outdoor environment is smaller than a preset humidity threshold value; wherein
The second preset temperature is lower than the first preset temperature, and in the first defrosting mode, a compressor of the air conditioning device operates at a first preset frequency; and
and when the temperature and the humidity of the outdoor environment do not meet all the conditions, executing other defrosting modes, wherein the running frequency of the compressor is higher than the first preset frequency in the other defrosting modes.
Optionally, the performing of the other defrosting mode when the temperature and the humidity of the outdoor environment do not satisfy all of the above conditions specifically includes:
when the following conditions are simultaneously met, executing a third defrosting mode, otherwise executing a second defrosting mode:
the temperature of the outdoor environment is higher than or equal to a second preset temperature and lower than or equal to a first preset temperature;
the humidity of the outdoor environment is greater than or equal to a first preset humidity;
the compressor executes the on-off operation for more than N times within a fourth preset time before the current moment and does not perform any defrosting operation; wherein
In the second defrosting mode and the third defrosting mode, the compressor respectively operates at a second preset frequency and a third preset frequency, and the first preset frequency, the second preset frequency and the third preset frequency are sequentially increased.
Optionally, the first preset frequency, the second preset frequency, and the third preset frequency satisfy the following relationship:
f3＝1.1f1，f2＝1.05f1；
wherein f is1For the first predetermined frequency, f2For the second predetermined frequency, f3Is the third preset frequency.
Optionally, in the first defrosting mode, the compressor operates at the first preset frequency for a first preset time period, in the second defrosting mode, the compressor operates at the second preset frequency for a second preset time period, and in the third defrosting mode, the compressor operates at the third preset frequency for a third preset time period; and is
The first preset time length, the second preset time length and the third preset time length are increased in sequence.
Optionally, the first preset duration, the second preset duration, and the third preset duration satisfy the following relationship:
t3＝1.2t1，t2＝1.1t1；
wherein, t1Is the first preset duration, t2Is the second preset duration, t3And the third preset time length.
Optionally, the fourth preset duration is any length of time value ranging from 2.5h to 3.5h, and N is any integer ranging from 2 to 4.
Optionally, the operation of acquiring the temperature and the humidity of the outdoor environment where the air conditioning device is located specifically includes:
detecting the temperature and the humidity of the outdoor environment at intervals according to a preset time period, continuing for a fifth preset time period, taking the average value of a plurality of temperature values detected in the fifth preset time period as the temperature value of the acquired outdoor environment, and taking the average value of a plurality of humidity values detected in the fifth preset time period as the humidity value of the acquired outdoor environment.
Optionally, the fifth preset duration is any duration value ranging from 15min to 25 min.
Optionally, the first preset temperature is any temperature value within a range of 4 ℃ to 6 ℃, and the second preset temperature is any temperature value within a range of-6 ℃ to-4 ℃; and is
The preset humidity threshold value is any relative humidity value within the range of 75-85%.
According to a second aspect of the present invention, there is provided an air conditioner including an outdoor unit installed outdoors and an indoor unit installed indoors, the outdoor unit having a compressor for compressing a refrigerant, wherein the air conditioner further includes:
the temperature detection device and the humidity detection device are arranged on the outdoor unit and are respectively used for acquiring the temperature and the humidity of the outdoor environment where the outdoor unit is located; and
a control device configured to control the compressor to perform a first defrosting mode when the temperature and humidity of the outdoor environment satisfy any one of the following conditions, and to perform other defrosting modes when the temperature and humidity of the outdoor environment do not satisfy all of the following conditions:
the temperature of the outdoor environment is higher than a first preset temperature;
the temperature of the outdoor environment is lower than a second preset temperature;
the temperature of the outdoor environment is higher than or equal to a second preset temperature and lower than or equal to a first preset temperature, and the humidity of the outdoor environment is smaller than a preset humidity threshold value; wherein
The second preset temperature is lower than the first preset temperature, and in the first defrosting mode, the operating frequency of the compressor is lower than the operating frequency in other defrosting modes. The control method of the air conditioner has different defrosting schemes according to different outdoor environment temperatures and humidity, so that the air conditioner can automatically select a proper defrosting mode according to the climate difference of the air conditioner, and the optimal defrosting effect and efficiency are obtained. Specifically, the temperature interval between the second preset temperature and the first preset temperature is a temperature interval in which the outdoor heat exchanger is prone to frosting, and in other temperature intervals outside the temperature interval, or in the case that the temperature is within the interval but the ambient humidity is low, the first defrosting mode with the low compressor operation frequency can be adopted. And selecting other defrosting modes with higher compressor running frequency under the conditions that the ambient temperature is between the second preset temperature and the first preset temperature and the ambient humidity is higher. Therefore, a proper defrosting mode can be automatically selected according to the actual temperature and humidity environment of the air conditioner, on one hand, the optimal defrosting effect and the optimal defrosting efficiency can be obtained, on the other hand, the normal heating function of the air conditioner cannot be influenced, and the use experience of a user is improved.
Further, other defrosting modes of the invention can be further subdivided into a second defrosting mode and a third defrosting mode according to the overall operation condition of the compressor. Specifically, when the compressor performs the on/off operation more than N times within the fourth preset time period and no defrosting operation is performed, the outdoor heat exchanger is most likely to frost, and the frosting degree is the most severe, and at this time, the third defrosting mode with the highest compressor running frequency is adopted, so that the frosting can be removed quickly and effectively, and the use of a user or the waste of energy is not influenced. The situation mainly occurs in hotels in the south, the environment humidity is high, and users often plug and unplug room cards to cause the phenomenon that the air conditioner is powered on and off for many times in a short time. Therefore, the air conditioner applying the control method of the invention can also play the best defrosting effect in hotels and other similar places, and the best application range of the air conditioner is enlarged.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic flowchart of a control method of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of a control method of an air conditioner according to another embodiment of the present invention;
fig. 3 is a schematic structural block diagram of an air conditioner according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention firstly provides a control method of an air conditioner. The control method comprises the following steps:
acquiring the temperature and the humidity of an outdoor environment where an air conditioning device is located;
executing a first defrosting mode when the temperature and the humidity of the outdoor environment meet any one of the following conditions:
the temperature of the outdoor environment is higher than a first preset temperature;
the temperature of the outdoor environment is lower than a second preset temperature;
the temperature of the outdoor environment is higher than or equal to a second preset temperature and lower than or equal to a first preset temperature, and the humidity of the outdoor environment is smaller than a preset humidity threshold value; wherein
The second preset temperature is lower than the first preset temperature, and in the first defrosting mode, a compressor of the air conditioning device operates at a first preset frequency; and
when the temperature and humidity of the outdoor environment do not satisfy all of the above conditions, the other defrosting mode in which the operating frequency of the compressor 11 is higher than the first preset frequency is performed.
Specifically, fig. 1 is a schematic flowchart of a control method of an air conditioner according to an embodiment of the present invention, and referring to fig. 1, the control method of the present invention may specifically include:
step S301, acquiring the temperature and humidity of the outdoor environment where the air conditioner is located;
step S302, judging whether the temperature of the outdoor environment is higher than a first preset temperature or lower than a second preset temperature, if so, turning to step S303, and if not, turning to step S304;
step S303, executing a first defrosting mode, and operating the compressor at a first preset frequency;
step S304, judging whether the humidity of the outdoor environment is smaller than a preset humidity threshold value, if so, turning to step S303, and if not, turning to step S305;
in step S305, other defrosting modes are executed, and the operating frequency of the compressor is higher than the first preset frequency.
The control method of the air conditioner has different defrosting schemes according to different outdoor environment temperatures and humidity, so that the air conditioner can automatically select a proper defrosting mode according to the climate difference of the air conditioner, and is more targeted, and the optimal defrosting effect and efficiency are obtained. Specifically, the temperature interval between the second preset temperature and the first preset temperature is a temperature interval in which the outdoor heat exchanger is prone to frosting, and the first defrosting mode with a lower compressor operation frequency can be adopted in other temperature intervals except the temperature interval or in the case that the temperature is in the interval but the ambient humidity is lower, and the case is mainly applicable to northern low-temperature and low-humidity areas. Under the conditions that the ambient temperature is between the second preset temperature and the first preset temperature and the ambient humidity is high, the outdoor heat exchanger is easy to frost. At the beginning, due to the existence of the frost layer, the heat absorption surface area of the heat exchanger is increased, and the heat absorption capacity is increased; when the frost layer is more and more, the contact between the fins of the heat exchanger and air is obstructed, and the heat absorption capacity is greatly reduced. When the humidity and the temperature are in the range, the frosting speed of the outdoor heat exchanger becomes fast, if the frosting is not carried out in time, the frost layer becomes thicker and thicker, and even the frost layer cannot be defrosted completely in the defrosting process, so that a vicious circle is formed: the frost layer is thicker and thicker, and the heating effect is poorer and poorer. Therefore, the other defrosting mode in which the operation frequency of the compressor is high is selected. Therefore, the appropriate defrosting mode can be automatically selected according to the actual temperature and humidity environment of the air conditioner, on one hand, the optimal defrosting effect and defrosting efficiency can be obtained, on the other hand, the normal heating function of the air conditioner cannot be influenced, and the use experience of a user is improved.
In some embodiments of the present invention, the first predetermined temperature may be any temperature value ranging from 4 ℃ to 6 ℃, and the second predetermined temperature may be any temperature value ranging from-6 ℃ to-4 ℃. For example, the first predetermined temperature may be 4 ℃, 4.5 ℃, 5 ℃, 5.5 ℃, 6 ℃, and the second predetermined temperature may be-6 ℃, -5.5 ℃, -5 ℃, -4.5 ℃, -4 ℃. When the first preset temperature is 5 ℃ and the second preset temperature is-5 ℃, the temperature difference condition of the south and the north of China is better met, and the defrosting effect of the air conditioning device is optimal.
It is emphasized that the predetermined humidity threshold value is a relative humidity value. Further, the preset humidity threshold of the present invention may be any relative humidity value ranging from 75% to 85%. For example, the preset humidity threshold may be 75%, 77%, 80%, 82%, 85%. When the preset humidity threshold value is 80%, the humidity difference condition of the south and north of China is better met, and the defrosting effect of the air conditioning device is optimal.
In some embodiments of the present invention, the performing of the other defrosting mode when the temperature and humidity of the outdoor environment do not satisfy all of the above conditions specifically includes:
when the following conditions are simultaneously met, executing a third defrosting mode, otherwise executing a second defrosting mode:
the temperature of the outdoor environment is higher than or equal to a second preset temperature and lower than or equal to a first preset temperature;
the humidity of the outdoor environment is higher than or equal to a first preset humidity;
the compressor 11 executes the on-off operation more than N times within a fourth preset time before the current time without any defrosting operation; wherein
In the second defrosting mode and the third defrosting mode, the compressor 11 operates at a second preset frequency and a third preset frequency, and the first preset frequency, the second preset frequency and the third preset frequency are sequentially increased.
Specifically, fig. 2 is a schematic flowchart of a control method of an air conditioner according to another embodiment of the present invention, and referring to fig. 2, the control method of the present invention may specifically include:
step S401, acquiring the temperature and the humidity of the outdoor environment where the air conditioner is located;
step S402, judging whether the temperature of the outdoor environment is higher than a first preset temperature or lower than a second preset temperature, if so, turning to step S403, and if not, turning to step S404;
step S403, executing a first defrosting mode, wherein the compressor runs at a first preset frequency;
step S404, judging whether the humidity of the outdoor environment is smaller than a preset humidity threshold value, if so, turning to step S403, and if not, turning to step S405;
step S405, determining whether the compressor 11 performs the on/off operation more than N times within a fourth preset time period before the current time and does not perform any defrosting operation, if yes, turning to step S406, and if not, turning to step S407;
step S406, executing a third defrosting mode, wherein the compressor runs at a third preset frequency;
step S407, executing a second defrosting mode, and operating the compressor at a second preset frequency.
The first preset frequency, the second preset frequency and the third preset frequency are increased in sequence.
In a further embodiment of the present invention, the other defrosting modes can be further subdivided into a second defrosting mode and a third defrosting mode according to the overall operation condition of the compressor. Specifically, when the ambient temperature is moderate and only the outdoor ambient humidity is high, the second defrosting mode with slightly high compressor running frequency is adopted to effectively defrost, and the condition is relatively suitable for common home users or commercial users in the south. When the compressor executes the on-off operation more than N times within the fourth preset time and no defrosting operation exists, the outdoor heat exchanger is most prone to frosting and is also the fastest to frosting. At the moment, the third defrosting mode with the highest compressor running frequency is adopted, so that frosting can be removed quickly and effectively, and the use of a user or the waste of energy sources is not influenced. The situation mainly occurs in hotels in the south, the environment humidity is high, and users often plug and unplug room cards to cause the phenomenon that the air conditioner is powered on and off for many times in a short time. Therefore, the air conditioner applying the control method of the invention can also play the best defrosting effect in hotels and other similar places, and the best application range of the air conditioner is enlarged.
In some embodiments of the present invention, the first predetermined frequency, the second predetermined frequency and the third predetermined frequency satisfy the following relationship: f. of3＝1.1f1，f2＝1.05f1(ii) a Wherein f is1Is a first predetermined frequency, f2Is a second predetermined frequency, f3Is a third predetermined frequency. Therefore, the defrosting efficiency of each defrosting mode can be ensured to be higher.
In some embodiments of the present invention, in the first defrosting mode, the compressor 11 operates at the first preset frequency for a first preset time period, in the second defrosting mode, the compressor 11 operates at the second preset frequency for a second preset time period, and in the third defrosting mode, the compressor 11 operates at the third preset frequency for a third preset time period. The first preset time, the second preset time and the third preset time are increased in sequence, and therefore, the better defrosting effect can be obtained in each defrosting mode.
Further, the first preset time length, the second preset time length and the third preset time length satisfy the following relationship: t is t3＝1.2t1，t2＝1.1t1(ii) a Wherein, t1Is the first preset duration, t2Is the second preset duration, t3And the third preset time is set to further improve the defrosting effect of each defrosting mode.
It should be noted that the first preset time, the second preset time, and the third preset time are time length values preset in the air conditioning device, and specific values of the first preset time, the second preset time, and the third preset time may be different according to different types or models of air conditioning devices. Similarly, the first preset frequency, the second preset frequency and the third preset frequency are also frequency values preset in the air conditioning device, and the specific values thereof may be different according to different types or models of air conditioning devices and different types of compressors.
In some embodiments of the present invention, the fourth preset duration may be any time length value ranging from 2.5h to 3.5h, and N may be any integer ranging from 2 to 4. For example, the fourth preset time period may be 2.5h, 2.7h, 3h, 3.2h, or 3.5h, and the value of N may be 2, 3, or 4. Preferably, when the fourth preset time is 3h and the value of N is 3, the judgment of which defrosting mode is executed is more accurate, and defrosting is more thorough.
In some embodiments of the present invention, the operation of obtaining the temperature and the humidity of the outdoor environment where the air conditioner is located specifically includes: and detecting the temperature and the humidity of the outdoor environment at intervals according to a preset time period for a fifth preset time period, taking the average value of a plurality of temperature values detected in the fifth preset time period as the acquired temperature value of the outdoor environment, and taking the average value of a plurality of humidity values detected in the fifth preset time period as the acquired humidity value of the outdoor environment. That is to say, when the temperature and the humidity of the outdoor environment are detected, the detection can be continued for a certain period of time, the accuracy of the obtained outdoor temperature and humidity is ensured by adopting a mode of obtaining parameter values for multiple times and finally taking an average value, and thus, a foundation is laid for the correct judgment and selection of the defrosting mode.
Further, too large or too small a value of the fifth preset duration may affect the accuracy of the outdoor temperature and humidity, and thus, in some further embodiments of the present invention, the fifth preset duration may be any length of time value ranging between 15min and 25 min. For example, the fifth preset time period may be 15min, 17min, 20min, 22min, or 25 min. The effect is best when the fifth preset time is 20 min.
The embodiment of the invention also provides an air conditioning device. Fig. 3 is a schematic block diagram of an air conditioner according to an embodiment of the present invention, and referring to fig. 3, the air conditioner 1 of the present invention includes an outdoor unit 10 installed outdoors and an indoor unit 20 installed indoors, and the outdoor unit 10 is provided therein with a compressor 11 for supplying a compressed refrigerant and an outdoor heat exchanger 12 for exchanging heat with air in an outdoor environment.
In particular, the air conditioning device 1 further comprises temperature detection means 13, humidity detection means 14 and control means 15. The temperature detecting device 13 and the humidity detecting device 14 are disposed in the outdoor unit 10 for respectively acquiring the temperature and the humidity of the outdoor environment of the outdoor unit 10. The control device 15 is configured to control the compressor 11 to perform the first defrosting mode when the temperature and humidity of the outdoor environment satisfy any of the following conditions, and to control the compressor 11 to perform the other defrosting mode when the temperature and humidity of the outdoor environment do not satisfy all of the following conditions. These conditions include: the temperature of the outdoor environment is greater than a first preset temperature; the temperature of the outdoor environment is lower than a second preset temperature; the temperature of the outdoor environment is greater than or equal to a second preset temperature and less than or equal to a first preset temperature, and the humidity of the outdoor environment is less than a preset humidity threshold value. The second preset temperature is less than the first preset temperature, and in the first defrosting mode, the operating frequency of the compressor 11 is lower than that in the other defrosting modes.
Specifically, the temperature detection device 13 and the humidity detection device 14 may be a temperature sensor and a humidity sensor, respectively. The control device 15 may be the overall controller of the air conditioning device 1.
In some embodiments of the present invention, the control device 15 is further configured to control the compressor 11 to execute the third defrosting mode when the following conditions are simultaneously satisfied, and otherwise control the compressor 11 to execute the second defrosting mode. These conditions include: the temperature of the outdoor environment is higher than or equal to a second preset temperature and lower than or equal to a first preset temperature; the humidity of the outdoor environment is greater than or equal to a first preset humidity; the compressor performs the on-off operation more than N times within a fourth preset time before the current moment and does not perform any defrosting operation.
In the second defrosting mode and the third defrosting mode, the compressor 11 operates at a second preset frequency and a third preset frequency, and the first preset frequency, the second preset frequency and the third preset frequency are sequentially increased.
In some embodiments of the present invention, the control device 15 is further configured to control the compressor 11 to operate at the second preset frequency for the second preset time period in the second defrosting mode, and to control the compressor 11 to operate at the third preset frequency for the third preset time period in the third defrosting mode. And the first preset time length, the second preset time length and the third preset time length are increased in sequence.
In some embodiments of the present invention, the control device 15 is further configured to control the temperature detection device 13 and the humidity detection device 14 to detect the temperature and the humidity of the outdoor environment at intervals of a predetermined time period for a fifth preset time period, and to take an average value of a plurality of temperature values detected within the fifth preset time period as the temperature value of the acquired outdoor environment and an average value of a plurality of humidity values detected within the fifth preset time period as the humidity value of the acquired outdoor environment.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (9)
1. A control method of an air conditioning apparatus, comprising:
acquiring the temperature and the humidity of an outdoor environment where the air conditioning device is located;
executing a first defrosting mode when the temperature and the humidity of the outdoor environment meet any one of the following conditions:
the temperature of the outdoor environment is higher than a first preset temperature;
the temperature of the outdoor environment is lower than a second preset temperature;
the temperature of the outdoor environment is higher than or equal to a second preset temperature and lower than or equal to a first preset temperature, and the humidity of the outdoor environment is smaller than a preset humidity threshold value; wherein
The second preset temperature is lower than the first preset temperature, and in the first defrosting mode, a compressor of the air conditioning device operates at a first preset frequency; and
when the temperature and the humidity of the outdoor environment do not meet all the conditions, executing other defrosting modes, wherein in the other defrosting modes, the running frequency of the compressor is higher than the first preset frequency; wherein
The operation of performing the other defrosting mode when the temperature and humidity of the outdoor environment do not satisfy all of the above conditions specifically includes:
when the following conditions are simultaneously met, executing a third defrosting mode, otherwise executing a second defrosting mode:
the temperature of the outdoor environment is higher than or equal to a second preset temperature and lower than or equal to a first preset temperature;
the humidity of the outdoor environment is greater than or equal to a first preset humidity;
the compressor executes the on-off operation for more than N times within a fourth preset time before the current moment and does not perform any defrosting operation; wherein
In the second defrosting mode and the third defrosting mode, the compressor respectively operates at a second preset frequency and a third preset frequency, and the first preset frequency, the second preset frequency and the third preset frequency are sequentially increased.
2. The control method according to claim 1, wherein
The first preset frequency, the second preset frequency and the third preset frequency satisfy the following relations: f. of3=1.1f1，f2=1.05f1；
Wherein f1 is the first predetermined frequency, f2 is the second predetermined frequency, and f3 is the third predetermined frequency.
3. The control method according to claim 1, wherein
In the first defrosting mode, the compressor operates at the first preset frequency for a first preset time, in the second defrosting mode, the compressor operates at the second preset frequency for a second preset time, and in the third defrosting mode, the compressor operates at the third preset frequency for a third preset time; and is
The first preset time length, the second preset time length and the third preset time length are increased in sequence.
4. The control method according to claim 3, wherein
The first preset duration, the second preset duration and the third preset duration satisfy the following relationship: t is t3=1.2t1，t2=1.1t1；
Wherein t1 is the first preset duration, t2 is the second preset duration, and t3 is the third preset duration.
5. The control method according to claim 1, wherein
The fourth preset duration is any time length value within the range of 2.5 h-3.5 h, and N is any integer within the range of 2-4.
6. The control method according to claim 1, wherein
The operation of obtaining the temperature and the humidity of the outdoor environment where the air conditioning device is located specifically includes:
detecting the temperature and the humidity of the outdoor environment at intervals according to a preset time period, continuing for a fifth preset time period, taking the average value of a plurality of temperature values detected in the fifth preset time period as the temperature value of the acquired outdoor environment, and taking the average value of a plurality of humidity values detected in the fifth preset time period as the humidity value of the acquired outdoor environment.
7. The control method according to claim 6, wherein
The fifth preset time length is any time length value ranging from 15min to 25 min.
8. The control method according to claim 1, wherein
The first preset temperature is any temperature value within the range of 4-6 ℃, and the second preset temperature is any temperature value within the range of-6-4 ℃; and is
The preset humidity threshold value is any relative humidity value within the range of 75-85%.
9. An air conditioner includes an outdoor unit installed outdoors and an indoor unit installed indoors, the outdoor unit having a compressor for supplying a compressed refrigerant, wherein the air conditioner further includes:
the temperature detection device and the humidity detection device are arranged on the outdoor unit and are respectively used for acquiring the temperature and the humidity of the outdoor environment where the outdoor unit is located; and
a control device configured to control the compressor to perform a first defrosting mode when the temperature and humidity of the outdoor environment satisfy any one of the following conditions, and to perform other defrosting modes when the temperature and humidity of the outdoor environment do not satisfy all of the following conditions:
the temperature of the outdoor environment is higher than a first preset temperature;
the temperature of the outdoor environment is lower than a second preset temperature;
the temperature of the outdoor environment is higher than or equal to a second preset temperature and lower than or equal to a first preset temperature, and the humidity of the outdoor environment is smaller than a preset humidity threshold value; wherein
The second preset temperature is lower than the first preset temperature, and in the first defrosting mode, the operating frequency of the compressor is lower than the operating frequency in other defrosting modes;
the control device is further configured to execute a third defrosting mode when the following conditions are simultaneously met, and otherwise execute the second defrosting mode:
the temperature of the outdoor environment is higher than or equal to a second preset temperature and lower than or equal to a first preset temperature;
the humidity of the outdoor environment is greater than or equal to a first preset humidity;
the compressor executes the on-off operation for more than N times within a fourth preset time before the current moment and does not perform any defrosting operation; wherein
In the first defrosting mode, the compressor is operated at a first preset frequency; in the second defrosting mode and the third defrosting mode, the compressor respectively operates at a second preset frequency and a third preset frequency, and the first preset frequency, the second preset frequency and the third preset frequency are sequentially increased.
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| CN201710736507.7A CN107543287B (en) | 2017-08-24 | 2017-08-24 | Air conditioner and control method thereof |
| PCT/CN2018/101578 WO2019037721A1 (en) | 2017-08-24 | 2018-08-21 | Air conditioning device and control method therefor |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106766019B (en) * | 2017-03-17 | 2022-04-19 | 珠海格力电器股份有限公司 | Air conditioner defrosting control system and air conditioner defrosting control method |
| CN107543287B (en) * | 2017-08-24 | 2020-08-04 | 青岛海尔空调器有限总公司 | Air conditioner and control method thereof |
| CN109323370B (en) * | 2018-09-30 | 2021-05-25 | 广东美的制冷设备有限公司 | Air conditioner and defrosting method and device thereof |
| CN111023451A (en) * | 2019-11-29 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Control method and device for ultrasonic defrosting, storable medium and air conditioner |
| CN110986277A (en) * | 2019-12-03 | 2020-04-10 | 青岛海尔空调器有限总公司 | Method and device for self-cleaning control of air conditioner and air conditioner |
| CN111121230A (en) * | 2019-12-30 | 2020-05-08 | 宁波奥克斯电气股份有限公司 | Air conditioner defrosting control method and device and air conditioner |
| CN111365825A (en) * | 2020-03-19 | 2020-07-03 | 宁波奥克斯电气股份有限公司 | Air conditioner defrosting control method and device and air conditioner |
| CN111473473B (en) * | 2020-04-23 | 2022-02-25 | 广东美的制冷设备有限公司 | Air conditioner and defrosting control method thereof |
| CN111692707A (en) * | 2020-06-08 | 2020-09-22 | 宁波奥克斯电气股份有限公司 | Defrosting control method and device for air conditioner external unit, storage medium and air conditioner |
| CN112628940B (en) * | 2020-12-11 | 2022-05-10 | 珠海格力电器股份有限公司 | Air conditioner defrosting control method and device, storage medium and air conditioner |
| CN113339981A (en) * | 2021-05-26 | 2021-09-03 | 青岛海尔空调器有限总公司 | Method and device for controlling air conditioner and air conditioner |
| CN114777288A (en) * | 2022-03-18 | 2022-07-22 | 青岛海尔空调器有限总公司 | Defrosting method and device for air conditioner external unit |
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| WO2019037721A1 (en) | 2019-02-28 |
| CN107543287A (en) | 2018-01-05 |
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Effective date of registration: 20201103 Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Patentee after: Haier Smart Home Co., Ltd. Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. |