CN106989486B - Control method and device of air conditioner and air conditioner - Google Patents

Control method and device of air conditioner and air conditioner Download PDF

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Publication number
CN106989486B
CN106989486B CN201710224058.8A CN201710224058A CN106989486B CN 106989486 B CN106989486 B CN 106989486B CN 201710224058 A CN201710224058 A CN 201710224058A CN 106989486 B CN106989486 B CN 106989486B
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temperature
air conditioner
dew point
condenser
point temperature
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CN106989486A (en
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谭周衡
刘奇伟
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Midea Group Co Ltd
Midea Group Wuhan Refrigeration Equipment Co Ltd
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Midea Group Co Ltd
Midea Group Wuhan Refrigeration Equipment Co Ltd
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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
    • F24F11/0008—Control or safety arrangements for air-humidification
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity
    • F24F2110/22—Humidity of the outside air

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Signal Processing (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention provides air conditioner control methods, an air conditioner control device and an air conditioner, wherein the air conditioner control method comprises the steps of obtaining an indoor environment temperature of the air conditioner and a dew point temperature of an outdoor environment, judging whether a difference value obtained by subtracting the indoor environment temperature from a preset temperature is smaller than a threshold value, if the difference value is smaller than a threshold value, controlling the temperature of a condenser of the air conditioner to be lower than the dew point temperature so as to collect condensed water for humidification after the temperature of the condenser is lower than the dew point temperature, and if the difference value is larger than or equal to a threshold value, keeping the current operation state of the air conditioner unchanged.

Description

Control method and device of air conditioner and air conditioner
Technical Field
The invention relates to the technical field of household appliances, in particular to a control method and a control device of an air conditioner and the air conditioner.
Background
Because the air conditioner can produce the comdenstion water in the operation process, can collect the comdenstion water and come to carry out the humidification to the air to make full use of comdenstion water. However, the air conditioner does not produce condensed water in all cases, and when the condensed water is not collected, there is no water for humidification.
Therefore, how to ensure that the air conditioner can collect the condensed water for humidification becomes an urgent technical problem to be solved.
Disclosure of Invention
The present invention is directed to solving at least the technical problems identified in the prior art or related art .
Therefore, aims to provide a control method of air conditioners.
Another objects of the invention are to provide a control device for air conditioners.
The invention also aims to to provide air conditioners.
To achieve at least objectives, according to an embodiment of of the present invention, a method for controlling a air conditioner includes obtaining an indoor ambient temperature of the air conditioner and obtaining a dew point temperature of an outdoor environment, determining whether a difference obtained by subtracting the indoor ambient temperature from a preset temperature is smaller than a th threshold, if the difference is smaller than the th threshold, controlling a temperature of a condenser of the air conditioner to be lower than the dew point temperature so as to collect condensed water for humidification after the temperature of the condenser is lower than the dew point temperature, and if the difference is greater than or equal to the th threshold, keeping a current operation state of the air conditioner unchanged.
According to the control method of the air conditioner, if the difference value obtained by subtracting the indoor environment temperature from the preset temperature is smaller than the th threshold value, the indoor environment temperature is higher, the air conditioner cannot generate condensed water or the amount of the generated condensed water is less, the temperature of the condenser is preferentially controlled to be lower than the dew point temperature, so that the condensed water for humidification is generated on the condenser, the condition that no water is available for humidification is avoided, and the reliability of the air conditioner during humidification operation is ensured.
The control method of the air conditioner according to the above embodiment of the present invention may further have the following technical features:
according to embodiments of the invention, the controlling the temperature of the condenser of the air conditioner to be lower than the dew point temperature to collect the condensed water for humidification after the temperature of the condenser is lower than the dew point temperature comprises gradually reducing the rotation speed of an outdoor fan of the air conditioner according to th step until the temperature of the condenser is lower than the dew point temperature by a second threshold value, and collecting the condensed water for humidification when the temperature of the condenser is lower than the dew point temperature by the second threshold value.
According to the control method of the air conditioner, if the rotating speed of the outdoor fan of the air conditioner is low, the heat exchange effect of the air conditioner is poor, the heat absorbed by the outdoor unit heat exchanger is less, the evaporation temperature is low, the temperature of the condenser is reduced, and condensate water is easy to generate on the condenser, so that the temperature of the condenser is lower than the dew point temperature by reducing the rotating speed of the outdoor fan, the condensate water is collected when the temperature of the condenser is lower than the dew point temperature by a second threshold value (for example, the second threshold value is any value between 2 ℃ and 5 ℃), and the amount of the condensate water collected from the condenser is ensured.
According to embodiments of the present invention, the controlling the temperature of the condenser of the air conditioner to be lower than the dew point temperature to collect the condensed water for humidification after the temperature of the condenser is lower than the dew point temperature includes gradually increasing the compressor frequency of the air conditioner by a second step until the temperature of the condenser is lower than the dew point temperature by a second threshold, and collecting the condensed water for humidification when the temperature of the condenser is lower than the dew point temperature by the second threshold.
According to the control method of the air conditioner of the embodiment of the invention, if the frequency of the compressor is higher, the evaporation pressure of the air conditioner is low, the evaporation temperature is low, the temperature of the condenser is reduced, and condensed water is easily generated on the condenser. Therefore, it is possible to make the temperature of the condenser lower than the dew point temperature by increasing the compressor frequency and collect the condensed water when the temperature of the condenser is lower than the dew point temperature by the second threshold value, thereby securing the amount of the condensed water collected from the condenser.
According to embodiments of the invention, the obtaining of the dew point temperature of the outdoor environment specifically comprises obtaining the outdoor environment temperature and the outdoor environment humidity of the air conditioner, and determining the dew point temperature according to the outdoor environment temperature and the outdoor environment humidity.
According to the control method of the air conditioner, the dew point temperature is determined according to the outdoor environment temperature and the outdoor environment humidity, so that the temperature of the condenser is controlled to be lower than the dew point temperature, and the reliability of collecting the condensed water is guaranteed.
According to embodiments of the present invention, the determining the dew point temperature according to the outdoor environment temperature and the outdoor environment humidity specifically includes substituting the outdoor environment temperature and the outdoor environment humidity into a preset formula to calculate the dew point temperature, or inquiring the dew point temperature by table lookup according to the outdoor environment temperature and the outdoor environment humidity.
According to the control method of the air conditioner, the dew point temperature can be calculated through a preset formula, and can be inquired in a table look-up mode, so that the reliability of collecting condensed water is guaranteed.
According to an embodiment of the second aspect of the invention, the control devices of the air conditioner comprise an obtaining unit, a judging unit and a collecting unit, wherein the obtaining unit is used for obtaining the indoor environment temperature of the air conditioner and obtaining the dew point temperature of the outdoor environment, the judging unit is used for judging whether the difference value obtained by subtracting the indoor environment temperature from the preset temperature is smaller than a th threshold value, and the collecting unit is used for controlling the temperature of a condenser of the air conditioner to be lower than the dew point temperature in the case that the judging unit judges that the difference value is smaller than the th threshold value, collecting condensed water for humidification after the temperature of the condenser is lower than the dew point temperature, and keeping the current operation state of the air conditioner unchanged in the case that the judging unit judges that the difference value is larger than or equal to the th threshold value.
According to the control device of the air conditioner, if the difference value obtained by subtracting the indoor environment temperature from the preset temperature is smaller than the th threshold value, the indoor environment temperature is higher, the air conditioner cannot generate condensed water or the amount of the generated condensed water is less, the temperature of the condenser is preferentially controlled to be lower than the dew point temperature, so that the condensed water for humidification is generated on the condenser, the condition that no water is available for humidification is avoided, and the reliability of the air conditioner during humidification operation is ensured.
According to embodiments of the present invention, the collecting unit includes a control sub-unit for gradually decreasing the outdoor fan speed of the air conditioner in steps until the temperature of the condenser is lower than the dew point temperature by a second threshold, and a collecting sub-unit for collecting condensed water for humidification when the temperature of the condenser is lower than the dew point temperature by the second threshold.
According to the control device of the air conditioner provided by the embodiment of the invention, if the rotating speed of the outdoor fan of the air conditioner is low, the heat exchange effect of the air conditioner is poor, the heat absorbed by the outer machine heat exchanger is less, the evaporation temperature is low, the temperature of the condenser is reduced, and condensed water is easily generated on the condenser. Therefore, the temperature of the condenser can be lower than the dew point temperature by reducing the rotating speed of the outdoor fan, and the condensed water is collected when the temperature of the condenser is lower than the dew point temperature by the second threshold value, so that the amount of the condensed water collected from the condenser is ensured.
According to embodiments of the present invention, the collecting unit includes a second control sub-unit for gradually increasing a compressor frequency of the air conditioner by a second step until the temperature of the condenser is lower than the dew point temperature by a second threshold, and a second collecting sub-unit for collecting condensed water for humidification when the temperature of the condenser is lower than the dew point temperature by the second threshold.
According to the control device of the air conditioner of the embodiment of the present invention, when the frequency of the compressor is high, the evaporation pressure of the air conditioner is low, the evaporation temperature is low, the temperature of the condenser is lowered, and condensed water is easily generated on the condenser. Therefore, it is possible to make the temperature of the condenser lower than the dew point temperature by increasing the compressor frequency and collect the condensed water when the temperature of the condenser is lower than the dew point temperature by the second threshold value, thereby securing the amount of the condensed water collected from the condenser.
According to embodiments of the invention, the obtaining unit comprises an obtaining subunit for obtaining an outdoor environment temperature and an outdoor environment humidity of the air conditioner, and a determining subunit for determining the dew point temperature according to the outdoor environment temperature and the outdoor environment humidity.
According to the control device of the air conditioner, the dew point temperature is determined according to the outdoor environment temperature and the outdoor environment humidity, so that the temperature of the condenser is controlled to be lower than the dew point temperature, and the reliability of collecting the condensed water is ensured.
According to embodiments of the present invention, the determining subunit is specifically configured to calculate the dew point temperature by substituting the outdoor environment temperature and the outdoor environment humidity into a preset formula, or query the dew point temperature by looking up a table according to the outdoor environment temperature and the outdoor environment humidity.
According to the control device of the air conditioner, the dew point temperature can be calculated through a preset formula, and can be inquired in a table look-up mode, so that the reliability of collecting condensed water is guaranteed.
According to an embodiment of the third aspect of the present invention, air conditioners are provided, including the control device of the air conditioner described in any item in the above technical solution, so that the air conditioner has the same technical effects as the control device of the air conditioner described in any item in the above technical solution, and details thereof are not repeated.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic flowchart illustrating a control method of an air conditioner according to embodiments of the present invention;
fig. 2 is a schematic flowchart illustrating a control method of an air conditioner according to another embodiments of the present invention;
fig. 3 is a schematic flowchart illustrating a control method of an air conditioner according to still another embodiments of the present invention;
fig. 4 is a schematic structural view showing control devices of air conditioners according to embodiments of the present invention;
fig. 5 is a schematic structural view illustrating a control apparatus of an air conditioner according to another embodiments of the present invention;
fig. 6 is a schematic structural view illustrating a control apparatus of an air conditioner according to still another embodiments of the present invention;
fig. 7 shows a schematic structural view of air conditioners according to embodiments of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understandable, the present invention is described in detail in below with reference to the accompanying drawings and detailed description.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Fig. 1 is a schematic flowchart illustrating a control method of an air conditioner according to embodiments of the present invention.
As shown in fig. 1, a control method of an air conditioner according to embodiments of the present invention includes:
step 102, obtaining an indoor environment temperature of the air conditioner, and obtaining a dew point temperature of an outdoor environment.
Among them, a temperature sensor may be provided in an indoor unit of the air conditioner to detect an indoor ambient temperature.
And 104, judging whether a difference value obtained by subtracting the indoor environment temperature from the preset temperature is smaller than an th threshold value, executing the step 106 if the judgment result is yes, and executing the step 108 if the judgment result is no.
For example, the preset temperature is greater than or equal to 16 ℃ and less than or equal to 30 ℃, preferably, the preset temperature is greater than or equal to 20 ℃ and less than or equal to 26 ℃. the th threshold is any value within 3 ℃, or the th threshold is between 1 ℃ and 3 ℃.
And 106, controlling the temperature of the condenser of the air conditioner to be lower than the dew point temperature so as to collect condensed water for humidification after the temperature of the condenser is lower than the dew point temperature.
Wherein the condensed water is collected to the outdoor unit chassis by closing the water collecting valve.
And step 108, keeping the current running state of the air conditioner unchanged.
In the technical scheme, if the difference value obtained by subtracting the indoor environment temperature from the preset temperature is less than the th threshold value, the indoor environment temperature is higher, the air conditioner cannot generate condensed water or the amount of the generated condensed water is less, the temperature of the condenser is preferentially controlled to be lower than the dew point temperature, so that the condensed water for humidification is generated on the condenser, the condition that no water is available for humidification is avoided, and the reliability of the air conditioner during humidification operation is further ensured.
It can be understood that obtaining the dew point temperature of the outdoor environment specifically includes: acquiring the outdoor environment temperature and the outdoor environment humidity of the air conditioner; and determining the dew point temperature according to the outdoor environment temperature and the outdoor environment humidity.
The dew point temperature is determined according to the outdoor environment temperature and the outdoor environment humidity so as to control the temperature of the condenser to be lower than the dew point temperature, thereby ensuring the reliability of collecting the condensed water.
It can be understood that, according to the outdoor ambient temperature and the outdoor ambient humidity, the dew point temperature is determined, which specifically includes: substituting the outdoor environment temperature and the outdoor environment humidity into a preset formula to calculate the dew point temperature; or inquiring the dew point temperature in a table look-up mode according to the outdoor environment temperature and the outdoor environment humidity.
The dew point temperature can be calculated through a preset formula, and can be inquired in a table look-up mode, so that the reliability of collecting condensed water is guaranteed.
For example, the preset formula is Td ═ a × T1+ b × T2+ c, where a, b, and c are all preset coefficients, T1 represents the outdoor environment temperature, T2 represents the outdoor environment humidity, and Td represents the dew point temperature, or tables in which the dew point temperature corresponding to each outdoor environment temperature and each outdoor environment humidity is recorded are stored in advance, so as to find out the dew point temperatures corresponding to the outdoor environment temperature and the outdoor environment humidity by means of table lookup.
Fig. 2 is a schematic flowchart illustrating a control method of an air conditioner according to another embodiments of the present invention.
Step 102, step 104 and step 108 in fig. 2 are substantially the same as step 102, step 104 and step 108 in fig. 1, and in addition, step 106 in fig. 1 specifically includes step 1062 in fig. 2, wherein step 1062 is to gradually reduce the rotation speed of the outdoor fan of the air conditioner according to , until the temperature of the condenser is lower than the dew point temperature by a second threshold value, and to collect the condensed water for humidification when the temperature of the condenser is lower than the dew point temperature by the second threshold value.
For example, the th step is 50r/min, the rotating speed of the outdoor fan of the air conditioner is firstly reduced by 50r/min, whether the temperature of the condenser is lower than the dew point temperature by a second threshold value is detected, if the temperature of the condenser is not lower than the dew point temperature by the second threshold value, the rotating speed of the outdoor fan of the air conditioner is continuously reduced by 50r/min until the temperature of the condenser is lower than the dew point temperature by the second threshold value.
Therefore, the temperature of the condenser can be lower than the dew point temperature by reducing the rotating speed of the outdoor fan, and the condensed water is collected when the temperature of the condenser is lower than the dew point temperature by a second threshold value (for example, the second threshold value is any value between 2 ℃ and 5 ℃), so that the amount of the condensed water collected from the condenser is ensured.
In addition, after the rotating speed of the outdoor fan is reduced, whether the difference value obtained by subtracting the indoor environment temperature from the preset temperature is smaller than the th threshold value or not is judged, if the difference value is judged to be smaller than the th threshold value, the rotating speed of the outdoor fan is restored to the rotating speed before the reduction is caused, the heating effect of the air conditioner is preferentially ensured, and therefore the influence on indoor heating caused by the reduction of the rotating speed of the outdoor fan is avoided.
Fig. 3 is a schematic flowchart illustrating a control method of an air conditioner according to still another embodiments of the present invention.
Step 102, step 104 and step 108 in fig. 3 are substantially the same as step 102, step 104 and step 108 in fig. 1, and in addition, step 106 in fig. 1 specifically includes step 1064 in fig. 3. Wherein, step 1064: gradually increasing the frequency of the compressor of the air conditioner according to a second step length until the temperature of the condenser is lower than the dew point temperature by a second threshold value; and collecting condensed water for humidification when the temperature of the condenser is lower than the dew point temperature by a second threshold value.
For example, the second step is 10HZ, the compressor frequency of the air conditioner is first increased by 10HZ, whether the temperature of the condenser is lower than the dew point temperature by a second threshold value is detected, and if the temperature of the condenser is not lower than the dew point temperature by the second threshold value, the compressor frequency of the air conditioner is continuously increased by 10HZ until the temperature of the condenser is lower than the dew point temperature by the second threshold value. In addition, when the temperature of the condenser is lower than the dew point temperature by a second threshold value, the collection of condensed water for humidification is started.
If the frequency of the compressor is high, the evaporation pressure of the air conditioner is low, the evaporation temperature is low, the temperature of the condenser is lowered, and condensed water is likely to be generated on the condenser. Therefore, it is possible to make the temperature of the condenser lower than the dew point temperature by increasing the compressor frequency and collect the condensed water when the temperature of the condenser is lower than the dew point temperature by the second threshold value, thereby securing the amount of the condensed water collected from the condenser.
In addition, the temperature of the condenser can be lower than the dew-point temperature by reducing the rotation speed of an outdoor fan of the air conditioner and increasing the frequency of a compressor of the air conditioner, and condensed water for humidification can be collected when the temperature of the condenser is lower than the dew-point temperature by a second threshold value.
Fig. 4 is a schematic structural diagram illustrating control devices of air conditioners according to embodiments of the present invention.
As shown in fig. 4, the control apparatus 400 of the air conditioner according to embodiments of the present invention includes an acquisition unit 402, a judgment unit 404, and a collection unit 406.
The air conditioner comprises an acquisition unit 402, a judgment unit 404, a collection unit 406 and a control unit, wherein the acquisition unit 402 is used for acquiring the indoor environment temperature of the air conditioner and acquiring the dew point temperature of the outdoor environment, the judgment unit 404 is used for judging whether the difference obtained by subtracting the indoor environment temperature from the preset temperature is smaller than the th threshold value or not, the collection unit 406 is used for controlling the temperature of a condenser of the air conditioner to be lower than the dew point temperature under the condition that the judgment unit 404 judges that the difference is smaller than the th threshold value so as to collect condensate water for humidification after the temperature of the condenser is lower than the dew point temperature, and the collection unit is used for collecting the condensate water for humidification according to the current operation state of the air conditioner under the condition that the judgment unit 404.
In the technical scheme, if the difference value obtained by subtracting the indoor environment temperature from the preset temperature is less than the th threshold value, the indoor environment temperature is higher, the air conditioner cannot generate condensed water or the amount of the generated condensed water is less, the temperature of the condenser is preferentially controlled to be lower than the dew point temperature, so that the condensed water for humidification is generated on the condenser, the condition that no water is available for humidification is avoided, and the reliability of the air conditioner during humidification operation is further ensured.
It is understood that the obtaining unit 402 includes: an obtaining subunit 4022, configured to obtain an outdoor ambient temperature and an outdoor ambient humidity of the air conditioner; the determining subunit 4024 is configured to determine the dew point temperature according to the outdoor environment temperature and the outdoor environment humidity.
The dew point temperature is determined according to the outdoor environment temperature and the outdoor environment humidity so as to control the temperature of the condenser to be lower than the dew point temperature, thereby ensuring the reliability of collecting the condensed water.
It can be understood that the determining subunit 4024 is specifically configured to substitute the outdoor environment temperature and the outdoor environment humidity into a preset formula to calculate the dew point temperature; or inquiring the dew point temperature in a table look-up mode according to the outdoor environment temperature and the outdoor environment humidity.
The dew point temperature can be calculated through a preset formula, and can be inquired in a table look-up mode, so that the reliability of collecting condensed water is guaranteed.
Fig. 5 is a schematic structural diagram illustrating a control apparatus of an air conditioner according to another embodiments of the present invention.
The acquisition unit 402 and the judgment unit 404 in fig. 5 are substantially the same as the acquisition unit 402 and the judgment unit 404 in fig. 4, and the acquisition subunit 4022 and the determination subunit 4024 in fig. 5 are substantially the same as the acquisition subunit 4022 and the determination subunit 4024 in fig. 4, further, the collection unit 406 in fig. 5 includes an th control subunit 4062 and a th collection subunit 4064, a th control subunit 4062 for gradually decreasing the outdoor fan rotation speed of the air conditioner by a th step until the temperature of the condenser is lower than the dew point temperature by a second threshold value, and a th collection subunit 4064 for collecting the condensed water for humidification when the temperature of the condenser is lower than the dew point temperature by the second threshold value.
Therefore, the temperature of the condenser can be lower than the dew point temperature by reducing the rotating speed of the outdoor fan, and the condensed water is collected when the temperature of the condenser is lower than the dew point temperature by a second threshold value (for example, the second threshold value is any value between 2 ℃ and 5 ℃), so that the amount of the condensed water collected from the condenser is ensured.
Fig. 6 is a schematic structural diagram illustrating a control apparatus 400 of an air conditioner according to still another embodiments of the present invention.
The acquisition unit 402 and the judgment unit 404 in fig. 6 are substantially the same as the acquisition unit 402 and the judgment unit 404 in fig. 4, and the acquisition subunit 4022 and the determination subunit 4024 in fig. 6 are substantially the same as the acquisition subunit 4022 and the determination subunit 4024 in fig. 4. In addition, the collecting unit 406 in fig. 6 includes a second control sub-unit 4066 and a second collecting sub-unit 4068. A second control sub-unit 4066 for gradually increasing the compressor frequency of the air conditioner by a second step length until the temperature of the condenser is lower than the dew point temperature by a second threshold value; a second collecting subunit 4068 configured to collect condensed water for humidification when the temperature of the condenser is lower than the dew point temperature by the second threshold value.
If the frequency of the compressor is high, the evaporation pressure of the air conditioner is low, the evaporation temperature is low, the temperature of the condenser is lowered, and condensed water is likely to be generated on the condenser. Therefore, it is possible to make the temperature of the condenser lower than the dew point temperature by increasing the compressor frequency and collect the condensed water when the temperature of the condenser is lower than the dew point temperature by the second threshold value, thereby securing the amount of the condensed water collected from the condenser.
Fig. 7 shows a schematic structural view of air conditioners according to embodiments of the present invention.
As shown in fig. 7, the air conditioner 700 according to embodiments of the present invention includes the control device 400 of the air conditioner described in fig. 4, 5, or 6, and therefore, the air conditioner 700 has the same technical effects as the control device 400 of the air conditioner described in fig. 4, 5, or 6, and will not be described again.
The technical scheme of the invention is explained in detail in the above with the accompanying drawings, and by the technical scheme of the invention, the heating effect of the air conditioner is ensured, and meanwhile, the condensed water for indoor humidification can be collected, so that the indoor relative humidity is improved, and the thermal comfort is improved.
In the present invention, the terms "", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, the terms "plurality" are two or more, the terms "connected", and the like are to be construed , e.g., fixedly connected, detachably connected, or physically connected, directly connected, or indirectly connected through an intermediate medium.
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 (9)

  1. The control method of the air conditioner of 1, kind, characterized by, comprising:
    acquiring the indoor environment temperature of the air conditioner, and acquiring the dew point temperature of the outdoor environment;
    judging whether a difference value obtained by subtracting the indoor environment temperature from the preset temperature is smaller than an th threshold value or not;
    if the difference is less than the th threshold, controlling the temperature of the condenser of the air conditioner to be lower than the dew point temperature so as to collect condensed water for humidification after the temperature of the condenser is lower than the dew point temperature;
    if the difference value is larger than or equal to the th threshold value, keeping the current operation state of the air conditioner unchanged;
    the controlling the temperature of the condenser of the air conditioner to be lower than the dew point temperature so as to collect condensed water for humidification after the temperature of the condenser is lower than the dew point temperature specifically comprises:
    gradually reducing the rotating speed of an outdoor fan of the air conditioner according to th step length until the temperature of the condenser is lower than the dew point temperature by a second threshold value;
    collecting condensed water for humidification when the temperature of the condenser is lower than the dew point temperature by the second threshold;
    after the rotating speed of the outdoor fan is reduced, whether the difference value is smaller than the th threshold value is judged again, and if the difference value is smaller than the th threshold value, the rotating speed of the outdoor fan is recovered.
  2. 2. The method for controlling an air conditioner according to claim 1, wherein the controlling the temperature of a condenser of the air conditioner to be lower than the dew point temperature to collect condensed water for humidification after the temperature of the condenser is lower than the dew point temperature, specifically comprises:
    gradually increasing the frequency of the compressor of the air conditioner according to a second step length until the temperature of the condenser is lower than the dew point temperature by a second threshold value;
    collecting condensed water for humidification when the temperature of the condenser is lower than the dew point temperature by the second threshold value.
  3. 3. The method for controlling an air conditioner according to claim 1 or 2, wherein the obtaining the dew point temperature of the outdoor environment specifically comprises:
    acquiring the outdoor environment temperature and the outdoor environment humidity of the air conditioner;
    and determining the dew point temperature according to the outdoor environment temperature and the outdoor environment humidity.
  4. 4. The method for controlling an air conditioner according to claim 3, wherein the determining the dew point temperature according to the outdoor environment temperature and the outdoor environment humidity specifically comprises:
    substituting the outdoor environment temperature and the outdoor environment humidity into a preset formula to calculate the dew point temperature; or
    And inquiring the dew point temperature in a table look-up manner according to the outdoor environment temperature and the outdoor environment humidity.
  5. The control device of the air conditioner of the kind 5, , characterized by comprising:
    the air conditioner comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring the indoor environment temperature of the air conditioner and acquiring the dew point temperature of the outdoor environment;
    the judging unit is used for judging whether a difference value obtained by subtracting the indoor environment temperature from the preset temperature is smaller than an th threshold value or not;
    a collecting unit for controlling the temperature of the condenser of the air conditioner to be lower than the dew point temperature to collect condensed water for humidification after the temperature of the condenser is lower than the dew point temperature in a case where the judging unit judges that the difference is less than the th threshold, and maintaining the current operation state of the air conditioner unchanged in a case where the judging unit judges that the difference is greater than or equal to the th threshold;
    the collecting unit includes:
    an control subunit, for gradually reducing the outdoor fan speed of the air conditioner according to step size until the temperature of the condenser is lower than the dew point temperature by a second threshold value;
    a collecting subunit for collecting condensed water for humidification when the temperature of the condenser is lower than the dew point temperature by the second threshold value, and
    after the rotating speed of the outdoor fan is reduced, whether the difference value is smaller than the th threshold value is judged again, and if the difference value is smaller than the th threshold value, the rotating speed of the outdoor fan is recovered.
  6. 6. The control device of an air conditioner according to claim 5, wherein the collecting unit includes:
    a second control subunit, configured to gradually increase the compressor frequency of the air conditioner according to a second step length until the temperature of the condenser is lower than the dew point temperature by a second threshold;
    a second collecting subunit for collecting condensed water for humidification when the temperature of the condenser is lower than the dew point temperature by the second threshold value.
  7. 7. The control device of an air conditioner according to claim 5 or 6, wherein the obtaining unit includes:
    the acquiring subunit is used for acquiring the outdoor environment temperature and the outdoor environment humidity of the air conditioner;
    and the determining subunit is used for determining the dew point temperature according to the outdoor environment temperature and the outdoor environment humidity.
  8. 8. The control device of an air conditioner according to claim 7, wherein the determination subunit is specifically configured to,
    substituting the outdoor environment temperature and the outdoor environment humidity into a preset formula to calculate the dew point temperature; or
    And inquiring the dew point temperature in a table look-up manner according to the outdoor environment temperature and the outdoor environment humidity.
  9. An air conditioner of claim 9, , comprising a control device of the air conditioner of any of claims 5 to 8, wherein the control device is the air conditioner of any of claims .
CN201710224058.8A 2017-04-07 2017-04-07 Control method and device of air conditioner and air conditioner Active CN106989486B (en)

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CN108278741A (en) * 2018-01-11 2018-07-13 广东美的制冷设备有限公司 The control method and air conditioner of air conditioner
CN108278669A (en) * 2018-01-30 2018-07-13 广东美的制冷设备有限公司 Air-conditioning system and its humidification water compensating control method
CN108278667A (en) * 2018-01-30 2018-07-13 广东美的制冷设备有限公司 Air-conditioning system and its humidification water compensating control method
CN108278666A (en) * 2018-01-30 2018-07-13 广东美的制冷设备有限公司 Air-conditioning system and its humidification water compensating control method
CN109269032B (en) * 2018-09-30 2020-07-24 珠海格力电器股份有限公司 Control method of air conditioner outdoor unit water pump and air conditioning equipment
CN112346498A (en) * 2020-11-11 2021-02-09 石家庄通合电子科技股份有限公司 Temperature control method, temperature control device and cabinet condensation removing equipment
CN112611075B (en) * 2020-11-26 2021-12-10 珠海格力电器股份有限公司 Fixed-frequency air conditioner, controller, anti-condensation control method and storage medium

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