CN105333569A - Condensation prevention control method and device for air conditioner - Google Patents
Condensation prevention control method and device for air conditioner Download PDFInfo
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- CN105333569A CN105333569A CN201510728292.5A CN201510728292A CN105333569A CN 105333569 A CN105333569 A CN 105333569A CN 201510728292 A CN201510728292 A CN 201510728292A CN 105333569 A CN105333569 A CN 105333569A
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- conditioner
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/85—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using variable-flow pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
Abstract
The invention discloses a condensation prevention control method for an air conditioner. The condensation prevention control method for the air conditioner includes the following steps that the humidity value RH1 of the environment is detected after the air conditioner runs for a first preset time period; the humidity value RH2 of the environment is detected after the air conditioner runs for a second preset time period; the second preset time period is longer than the first time period; whether the first condition is satisfied or not is judged; under the first condition, the difference value of the humidity value RH1 and the humidity value RH2 is smaller than or equal to a first threshold value and the humidity value RH1 is larger than or equal to a second threshold value; if the first condition is satisfied, the work frequency of a compressor of the air conditioner is reduced; and if the first condition is not satisfied, the work frequency of the compressor of the air conditioner is controlled unchanged. The invention further discloses a condensation prevention control device for the air conditioner. By means of the condensation prevention method and device for the air conditioner, the condensation phenomenon generated in the running process of the air conditioner is effectively prevented, and the environment comfort degree is improved.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly relate to condensation prevention control method and the device of air-conditioner.
Background technology
As everyone knows, in the use procedure of air-conditioner cooling in summer, at air outlet position because cold wind and hot blast cross, time relative air humidity is large, easily produce condensation at air outlet.Condensation water is easy at the position such as air outlet, wind guide strip drippage or with air-supply blowout after producing.
Summary of the invention
Main purpose of the present invention is the condensation prevention control method and the device that provide a kind of air-conditioner, is intended to effectively prevent to produce dew condensation phenomenon in air-conditioner running, improves environmental degree of comfort.
For achieving the above object, the condensation prevention control method of a kind of air-conditioner provided by the invention comprises the following steps:
Detect air-conditioner run after first preset time period environment humidity value RH1;
After air-conditioner ran for the second preset time period, the humidity value RH2 of testing environment; Described second preset time is greater than the first preset time;
Judge whether first condition is set up; Described first condition is that the difference of described humidity value RH1 and humidity value RH2 is less than or equal to first threshold and humidity value RH1 is more than or equal to Second Threshold;
If so, the compressor operating frequency of air-conditioner is then reduced;
If not, then the compressor operating frequency controlling air-conditioner is constant.
Preferably, the condensation prevention control method of described air-conditioner also comprises:
When described first condition is false, judge whether second condition is set up; Described second condition is that the difference of described humidity value RH2 and humidity value RH1 is greater than the 3rd threshold value, humidity value RH1 is less than described Second Threshold and humidity value RH2 is greater than the 4th threshold value; Described 3rd threshold value is greater than described first threshold;
If so, the compressor operating frequency of air-conditioner is then reduced;
If not, then the compressor operating frequency controlling air-conditioner is constant.
Preferably, the compressor operating frequency of described reduction air-conditioner comprises:
Obtain the operating frequency that described compressor is current;
The target frequency after frequency reducing is calculated according to default frequency reducing ratio value according to the operating frequency got;
The operating frequency of described compressor is adjusted according to described target frequency.
Preferably, described humidity value RH1 be described first preset time period environment medial humidity value.
Preferably, after air-conditioner ran for the second preset time period, the humidity value RH2 of testing environment comprises:
After air-conditioner ran for the second preset time period, every the current humidity value RH2 of prefixed time interval testing environment.
In addition, for achieving the above object, the present invention also provides a kind of anti-condensation control device of air-conditioner, and the anti-condensation control device of described kind of air-conditioner comprises:
Detection module, for detect air-conditioner run after first preset time period environment humidity value RH1; After air-conditioner ran for the second preset time period, the humidity value RH2 of testing environment; Described second preset time is greater than the first preset time;
First judge module, for judging whether first condition is set up; Described first condition is that the difference of described humidity value RH1 and humidity value RH2 is less than or equal to first threshold and humidity value RH1 is more than or equal to Second Threshold;
Processing module, for when described first condition is set up, reduces the compressor operating frequency of air-conditioner; When described first condition is false, the compressor operating frequency controlling air-conditioner is constant.
Preferably, the anti-condensation control device of described air-conditioner also comprises:
Second judge module, for when described first condition is false, judges whether second condition is set up; Described second condition is that the difference of described humidity value RH2 and humidity value RH1 is greater than the 3rd threshold value, humidity value RH1 is less than described Second Threshold and humidity value RH2 is greater than the 4th threshold value; Described 3rd threshold value is greater than described first threshold; And when second condition is set up, trigger the compressor operating frequency that described processing module reduces air-conditioner; When second condition is false, the compressor operating frequency triggering described processing module control air-conditioner is constant.
Preferably, described processing module comprises:
Acquiring unit, for obtaining the current operating frequency of described compressor;
Computing unit, for calculating the target frequency after frequency reducing according to the operating frequency got according to default frequency reducing ratio value;
Adjustment unit, for adjusting the operating frequency of described compressor according to described target frequency.
Preferably, described humidity value RH1 be described first preset time period environment medial humidity value.
Preferably, described detection module specifically for, after air-conditioner ran for the second preset time period, every the current humidity value RH2 of prefixed time interval testing environment.
In the embodiment of the present invention, by detect air-conditioner run after first preset time period environment humidity value RH1; After air-conditioner ran for the second preset time period, the humidity value RH2 of testing environment; Described second preset time is greater than the first preset time; Judge whether first condition is set up; Described first condition is that the difference of described humidity value RH1 and humidity value RH2 is less than or equal to first threshold and humidity value RH1 is more than or equal to Second Threshold; If so, the compressor operating frequency of air-conditioner is then reduced; If not, then the compressor operating frequency controlling air-conditioner is constant.Due to the running status of the variable condition adjustment compressor of environmentally humidity, thus effectively can prevent to produce dew condensation phenomenon in air-conditioner running, improve environmental degree of comfort.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of condensation prevention control method first embodiment of air-conditioner of the present invention;
Fig. 2 is the schematic flow sheet of condensation prevention control method second embodiment of air-conditioner of the present invention;
Fig. 3 falls low-frequency refinement schematic flow sheet in condensation prevention control method the 3rd embodiment of air-conditioner of the present invention;
Fig. 4 is the high-level schematic functional block diagram of anti-condensation control device first embodiment of air-conditioner of the present invention;
Fig. 5 is the high-level schematic functional block diagram of anti-condensation control device second embodiment of air-conditioner of the present invention;
Fig. 6 is the refinement high-level schematic functional block diagram of processing module in anti-condensation control device the 3rd embodiment of air-conditioner of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of condensation prevention control method of air-conditioner, with reference to Fig. 1, in condensation prevention control method first embodiment of air-conditioner of the present invention, the condensation prevention control method of this air-conditioner comprises:
Step S10, detect air-conditioner run after first preset time period environment humidity value RH1;
The condensation prevention control method of the air-conditioner that the present embodiment provides is mainly used in frequency-conversion air-conditioning system, for controlling the compressor frequency of air-conditioner, to prevent in the process of air-conditioner refrigerating operaton or to produce dew condensation phenomenon in dehumidification mode running.
Particularly, the time span of above-mentioned first preset time period can be arranged according to actual needs, when this humidity value of the present embodiment RH1 refers to that controller refrigeration starts, and the initial value of ambient humidity.Therefore the time span of this first preset time period is shorter, and the scope value of such as the first preset time period can be 0 ~ 5 minute, preferably, can be 1 ~ 2 minute.Above-mentioned humidity value RH1 can be the humidity value of a certain moment detection in the first preset time period, also can be the medial humidity value in the first preset time environment.Such as, can obtain the humidity value of a secondary environment at set intervals, the mean value then calculating the humidity value repeatedly obtained obtains above-mentioned humidity value RH1.Be understandable that, the detection of humidity value can be arranged according to actual needs, in the present embodiment, preferably, can arrange humidity sensor, with the humidity value of testing environment in the air inlet of indoor apparatus of air conditioner.
Step S20, after air-conditioner ran for the second preset time period, the humidity value RH2 of testing environment; Described second preset time is greater than the first preset time;
Step S30, judges whether first condition is set up; Described first condition is that the difference of described humidity value RH1 and humidity value RH2 is less than or equal to first threshold and humidity value RH1 is more than or equal to Second Threshold; If so, then step S40 is performed, if not, then step S50;
Step S40, reduces the compressor operating frequency of air-conditioner;
Step S50, the compressor operating frequency controlling air-conditioner is constant.
In the present embodiment, the time span of above-mentioned second preset time period can be arranged according to actual needs, does not do limiting further at this.Such as, the scope value of the time span of this second preset time period can be 20 ~ 40 minutes, is preferably 25 ~ 35 minutes.Particularly, above-mentioned humidity value, can be the mean value of multi collect, also can adopt the humidity value of the instantaneous collection of humidity sensor.Such as, in the present embodiment, above-mentioned steps S20 is specifically as follows: after air-conditioner ran for the second preset time period, every the current humidity value RH2 of prefixed time interval testing environment.
After each detection gets current humidity value RH2, first condition judgement can be carried out according to the humidity value RH2 detected, judge whether above-mentioned first condition meets.
When practical application, first can judging whether above-mentioned humidity value RH1 is more than or equal to Second Threshold, when humidity value RH1 is less than Second Threshold, then determine that ambient humidity is lower, without the need to carrying out down conversion process, then keeping compressor present operating frequency; When humidity value is more than or equal to Second Threshold, then determine that ambient humidity is higher, environment may be caused to produce dew condensation phenomenon, need the difference size judging humidity value RH2 and humidity value RH1 further, determine the situation that ambient humidity declines.Particularly, if when judging that humidity value RH1 is more than or equal to Second Threshold, then follow-up humidity value RH2 detected at every turn after, directly judge whether the difference of humidity value RH1 and humidity value RH2 is less than or equal to first threshold: when the difference of humidity value RH1 and humidity value RH2 is less than or equal to first threshold, illustrate in air-conditioner running, it is little that ambient air relative humidity humidity declines, or there are other steam to add to indoor, air-conditioner continues to run the risk having and condensation occurs, need to do anti-condensation restriction (namely reducing the compressor operating frequency of air-conditioner) to cooler compressor running frequency, when the difference of humidity value RH1 and humidity value RH2 is greater than described first threshold, illustrate in air-conditioner running, it is a lot of that ambient air relative humidity humidity declines, air-conditioner continues to run the risk that condensation does not occur, and cooler compressor running frequency does not do anti-condensation restriction (namely not adjusting the compressor operating frequency of air-conditioner).
Be understandable that, the size of above-mentioned first threshold and Second Threshold can be arranged according to actual needs, and such as, in the present embodiment, the scope value of above-mentioned first threshold can be 1% ~ 15%, and preferably 5% ~ 10%; The scope value of above-mentioned Second Threshold can be 60% ~ 75%, is preferably 65% ~ 70%.
Be understandable that, in the present embodiment, the refrigeration that anti-condensation operation effectively can ensure air-conditioner is not carried out, to make the temperature value of environment lower rapidly, to meet user to temperature requirements within the first preset time period that air-conditioner runs and the second preset time period.
In the embodiment of the present invention, by detect air-conditioner run after first preset time period environment humidity value RH1; After air-conditioner ran for the second preset time period, the humidity value RH2 of testing environment; Described second preset time is greater than the first preset time; Judge whether first condition is set up; Described first condition is that the difference of described humidity value RH1 and humidity value RH2 is less than or equal to first threshold and humidity value RH1 is more than or equal to Second Threshold; If so, the compressor operating frequency of air-conditioner is then reduced; If not, then the compressor operating frequency controlling air-conditioner is constant.Due to the running status of the variable condition adjustment compressor of environmentally humidity, thus effectively can prevent to produce dew condensation phenomenon in air-conditioner running, improve environmental degree of comfort.
With further reference to Fig. 2, based on above-described embodiment, in condensation prevention control method second embodiment of air-conditioner of the present invention, also should comprise before execution above-mentioned steps S50:
Step S60, judges whether second condition is set up; Described second condition is that the difference of described humidity value RH2 and humidity value RH1 is greater than the 3rd threshold value, humidity value RH1 is less than described Second Threshold and humidity value RH2 is greater than the 4th threshold value; Described 3rd threshold value is greater than described first threshold; If so, then perform step S40, otherwise perform step S50.
In the present embodiment, when described first condition is false, judge whether second condition (difference of described humidity value RH2 and humidity value RH1 is greater than the 3rd threshold value, humidity value RH1 is less than described Second Threshold and humidity value RH2 is greater than the 4th threshold value) is set up.Particularly, when humidity value RH1 is less than Second Threshold (determining that ambient humidity is lower), in order to avoid have in air-conditioner follow-up operation rain or other humid air add in indoor environment, cause the situation that ambient humidity is larger, need judge whether the difference of humidity value RH2 and humidity value RH1 is greater than the 3rd threshold value further, in case the humidity in stop ring border due to external action cause generation dew condensation phenomenon.As humidity value RH2 and humidity value RH1, and when RH2 is greater than the 4th threshold value, then judge that air-conditioner continues to run the risk having and condensation occurs, need to do anti-condensation restriction to cooler compressor running frequency.
Be appreciated that and be, the size of above-mentioned 3rd threshold value and the 4th threshold value can be carried out according to actual needs, and in the present embodiment, the span of above-mentioned 3rd threshold value can be 10% ~ 30%, is preferably 15% ~ 25%; The span of above-mentioned 4th threshold value can be 70% ~ 90%, is preferably 75% ~ 85%.
Further, with reference to Fig. 3, based on above-described embodiment, in condensation prevention control method the 3rd embodiment of air-conditioner of the present invention, the compressor operating frequency of above-mentioned reduction air-conditioner comprises:
Step S31, obtains the operating frequency that described compressor is current;
Step S32, calculates the target frequency after frequency reducing according to the operating frequency got according to default frequency reducing ratio value;
Step S33, adjusts the operating frequency of described compressor according to described target frequency.
In the present embodiment, above-mentioned frequency reducing ratio value can be arranged according to actual needs, such as, is 1.1 to be described in detail below with frequency reducing ratio value.First can obtain the current operating frequency Fn of compressor, calculating according to above-mentioned frequency reducing ratio value the target frequency obtained is Fn/1.1; Then the operating frequency of compressor is adjusted to Fn/1.1.Be understandable that, in order to ensure refrigeration, preferably, the lower limit of operating frequency can be set.Particularly, when Fn/1.1 is less than this lower limit, then the direct operating frequency use this lower limit being controlled compressor as target frequency.Namely when the operating frequency that compressor is current is this lower limit, no longer carry out down conversion process, thus prevent the operating frequency of compressor too low, cause air-conditioner normally to work.
The present invention also provides a kind of anti-condensation control device of air-conditioner, and with reference to Fig. 4, in one embodiment, the anti-condensation control device of air-conditioner provided by the invention comprises:
Detection module 10, for detect air-conditioner run after first preset time period environment humidity value RH1; After air-conditioner ran for the second preset time period, the humidity value RH2 of testing environment; Described second preset time is greater than the first preset time;
First judge module 20, for judging whether first condition is set up; Described first condition is that the difference of described humidity value RH1 and humidity value RH2 is less than or equal to first threshold and humidity value RH1 is more than or equal to Second Threshold;
Processing module 30, for when described first condition is set up, reduces the compressor operating frequency of air-conditioner; When described first condition is false, the compressor operating frequency controlling air-conditioner is constant.
The anti-condensation control device of the air-conditioner that the present embodiment provides is mainly used in frequency-conversion air-conditioning system, for controlling the compressor frequency of air-conditioner, to prevent in the process of air-conditioner refrigerating operaton or to produce dew condensation phenomenon in dehumidification mode running.
Particularly, the time span of above-mentioned first preset time period can be arranged according to actual needs, when this humidity value of the present embodiment RH1 refers to that controller refrigeration starts, and the initial value of ambient humidity.Therefore the time span of this first preset time period is shorter, and the scope value of such as the first preset time period can be 0 ~ 5 minute, preferably, can be 1 ~ 2 minute.Above-mentioned humidity value RH1 can be the humidity value of a certain moment detection in the first preset time period, also can be the medial humidity value in the first preset time environment.Such as, can obtain the humidity value of a secondary environment at set intervals, the mean value then calculating the humidity value repeatedly obtained obtains above-mentioned humidity value RH1.Be understandable that, the detection of humidity value can be arranged according to actual needs, in the present embodiment, preferably, can arrange humidity sensor, with the humidity value of testing environment in the air inlet of indoor apparatus of air conditioner.
In the present embodiment, the time span of above-mentioned second preset time period can be arranged according to actual needs, does not do limiting further at this.Such as, the scope value of the time span of this second preset time period can be 20 ~ 40 minutes, is preferably 25 ~ 35 minutes.Particularly, above-mentioned humidity value, can be the mean value of multi collect, also can adopt the humidity value of the instantaneous collection of humidity sensor.Such as, in the present embodiment, above-mentioned detection module 10 specifically for, after air-conditioner ran for the second preset time period, every the current humidity value RH2 of prefixed time interval testing environment.
After each detection gets current humidity value RH2, first condition judgement can be carried out according to the humidity value RH2 detected, judge whether above-mentioned first condition meets.
When practical application, first can judging whether above-mentioned humidity value RH1 is more than or equal to Second Threshold, when humidity value RH1 is less than Second Threshold, then determine that ambient humidity is lower, without the need to carrying out down conversion process, then keeping compressor present operating frequency; When humidity value is more than or equal to Second Threshold, then determine that ambient humidity is higher, environment may be caused to produce dew condensation phenomenon, need the difference size judging humidity value RH2 and humidity value RH1 further, determine the situation that ambient humidity declines.Particularly, if when judging that humidity value RH1 is more than or equal to Second Threshold, then follow-up humidity value RH2 detected at every turn after, directly judge whether the difference of humidity value RH1 and humidity value RH2 is less than or equal to first threshold: when the difference of humidity value RH1 and humidity value RH2 is less than or equal to first threshold, illustrate in air-conditioner running, it is little that ambient air relative humidity humidity declines, or there are other steam to add to indoor, air-conditioner continues to run the risk having and condensation occurs, need to do anti-condensation restriction (namely reducing the compressor operating frequency of air-conditioner) to cooler compressor running frequency, when the difference of humidity value RH1 and humidity value RH2 is greater than described first threshold, illustrate in air-conditioner running, it is a lot of that ambient air relative humidity humidity declines, air-conditioner continues to run the risk that condensation does not occur, and cooler compressor running frequency does not do anti-condensation restriction (namely not adjusting the compressor operating frequency of air-conditioner).
Be understandable that, the size of above-mentioned first threshold and Second Threshold can be arranged according to actual needs, and such as, in the present embodiment, the scope value of above-mentioned first threshold can be 1% ~ 15%, and preferably 5% ~ 10%; The scope value of above-mentioned Second Threshold can be 60% ~ 75%, is preferably 65% ~ 70%.
Be understandable that, in the present embodiment, the refrigeration that anti-condensation operation effectively can ensure air-conditioner is not carried out, to make the temperature value of environment lower rapidly, to meet user to temperature requirements within the first preset time period that air-conditioner runs and the second preset time period.
In the embodiment of the present invention, by detect air-conditioner run after first preset time period environment humidity value RH1; After air-conditioner ran for the second preset time period, the humidity value RH2 of testing environment; Described second preset time is greater than the first preset time; Judge whether first condition is set up; Described first condition is that the difference of described humidity value RH1 and humidity value RH2 is less than or equal to first threshold and humidity value RH1 is more than or equal to Second Threshold; If so, the compressor operating frequency of air-conditioner is then reduced; If not, then the compressor operating frequency controlling air-conditioner is constant.Due to the running status of the variable condition adjustment compressor of environmentally humidity, thus effectively can prevent to produce dew condensation phenomenon in air-conditioner running, improve environmental degree of comfort.
With further reference to Fig. 5, based on above-described embodiment, in anti-condensation control device second embodiment of air-conditioner of the present invention, the anti-condensation control device of above-mentioned air-conditioner also comprises:
Second judge module 40, for when described first condition is false, judges whether second condition is set up; Described second condition is that the difference of described humidity value RH2 and humidity value RH1 is greater than the 3rd threshold value, humidity value RH1 is less than described Second Threshold and humidity value RH2 is greater than the 4th threshold value; Described 3rd threshold value is greater than described first threshold; And when second condition is set up, trigger the compressor operating frequency that described processing module 30 reduces air-conditioner; When second condition is false, triggering described processing module 30, to control the compressor operating frequency of air-conditioner constant.
In the present embodiment, when described first condition is false, judge whether second condition (difference of described humidity value RH2 and humidity value RH1 is greater than the 3rd threshold value, humidity value RH1 is less than described Second Threshold and humidity value RH2 is greater than the 4th threshold value) is set up.Particularly, when humidity value RH1 is less than Second Threshold (determining that ambient humidity is lower), in order to avoid have in air-conditioner follow-up operation rain or other humid air add in indoor environment, cause the situation that ambient humidity is larger, need judge whether the difference of humidity value RH2 and humidity value RH1 is greater than the 3rd threshold value further, in case the humidity in stop ring border due to external action cause generation dew condensation phenomenon.As humidity value RH2 and humidity value RH1, and when RH2 is greater than the 4th threshold value, then judge that air-conditioner continues to run the risk having and condensation occurs, need to do anti-condensation restriction to cooler compressor running frequency.
Be appreciated that and be, the size of above-mentioned 3rd threshold value and the 4th threshold value can be carried out according to actual needs, and in the present embodiment, the span of above-mentioned 3rd threshold value can be 10% ~ 30%, is preferably 15% ~ 25%; The span of above-mentioned 4th threshold value can be 70% ~ 90%, is preferably 75% ~ 85%.
Further, with reference to Fig. 6, based on above-described embodiment, in anti-condensation control device the 3rd embodiment of air-conditioner of the present invention, above-mentioned processing module 30 comprises:
Acquiring unit 31, for obtaining the current operating frequency of described compressor;
Computing unit 32, for calculating the target frequency after frequency reducing according to the operating frequency got according to default frequency reducing ratio value;
Adjustment unit 33, for adjusting the operating frequency of described compressor according to described target frequency.
In the present embodiment, above-mentioned frequency reducing ratio value can be arranged according to actual needs, such as, is 1.1 to be described in detail below with frequency reducing ratio value.First can obtain the current operating frequency Fn of compressor, calculating according to above-mentioned frequency reducing ratio value the target frequency obtained is Fn/1.1; Then the operating frequency of compressor is adjusted to Fn/1.1.Be understandable that, in order to ensure refrigeration, preferably, the lower limit of operating frequency can be set.Particularly, when Fn/1.1 is less than this lower limit, then the direct operating frequency use this lower limit being controlled compressor as target frequency.Namely when the operating frequency that compressor is current is this lower limit, no longer carry out down conversion process, thus prevent the operating frequency of compressor too low, cause air-conditioner normally to work.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a condensation prevention control method for air-conditioner, is characterized in that, the condensation prevention control method of described air-conditioner comprises the following steps:
Detect air-conditioner run after first preset time period environment humidity value RH1;
After air-conditioner ran for the second preset time period, the humidity value RH2 of testing environment; Described second preset time is greater than the first preset time;
Judge whether first condition is set up; Described first condition is that the difference of described humidity value RH1 and humidity value RH2 is less than or equal to first threshold and humidity value RH1 is more than or equal to Second Threshold;
If so, the compressor operating frequency of air-conditioner is then reduced;
If not, then the compressor operating frequency controlling air-conditioner is constant.
2. the condensation prevention control method of air-conditioner as claimed in claim 1, it is characterized in that, the condensation prevention control method of described air-conditioner also comprises:
When described first condition is false, judge whether second condition is set up; Described second condition is that the difference of described humidity value RH2 and humidity value RH1 is greater than the 3rd threshold value, humidity value RH1 is less than described Second Threshold and humidity value RH2 is greater than the 4th threshold value; Described 3rd threshold value is greater than described first threshold;
If so, the compressor operating frequency of air-conditioner is then reduced;
If not, then the compressor operating frequency controlling air-conditioner is constant.
3. the condensation prevention control method of air-conditioner as claimed in claim 1 or 2, it is characterized in that, the compressor operating frequency of described reduction air-conditioner comprises:
Obtain the operating frequency that described compressor is current;
The target frequency after frequency reducing is calculated according to default frequency reducing ratio value according to the operating frequency got;
The operating frequency of described compressor is adjusted according to described target frequency.
4. the condensation prevention control method of air-conditioner as claimed in claim 1, is characterized in that, described humidity value RH1 be described first preset time period environment medial humidity value.
5. the condensation prevention control method of air-conditioner as claimed in claim 1, it is characterized in that, after air-conditioner ran for the second preset time period, the humidity value RH2 of testing environment comprises:
After air-conditioner ran for the second preset time period, every the current humidity value RH2 of prefixed time interval testing environment.
6. an anti-condensation control device for air-conditioner, is characterized in that, the anti-condensation control device of described air-conditioner comprises:
Detection module, for detect air-conditioner run after first preset time period environment humidity value RH1; After air-conditioner ran for the second preset time period, the humidity value RH2 of testing environment; Described second preset time is greater than the first preset time;
First judge module, for judging whether first condition is set up; Described first condition is that the difference of described humidity value RH1 and humidity value RH2 is less than or equal to first threshold and humidity value RH1 is more than or equal to Second Threshold;
Processing module, for when described first condition is set up, reduces the compressor operating frequency of air-conditioner; When described first condition is false, the compressor operating frequency controlling air-conditioner is constant.
7. the anti-condensation control device of air-conditioner as claimed in claim 6, it is characterized in that, the anti-condensation control device of described air-conditioner also comprises:
Second judge module, for when described first condition is false, judges whether second condition is set up; Described second condition is that the difference of described humidity value RH2 and humidity value RH1 is greater than the 3rd threshold value, humidity value RH1 is less than described Second Threshold and humidity value RH2 is greater than the 4th threshold value; Described 3rd threshold value is greater than described first threshold; And when second condition is set up, trigger the compressor operating frequency that described processing module reduces air-conditioner; When second condition is false, the compressor operating frequency triggering described processing module control air-conditioner is constant.
8. the anti-condensation control device of air-conditioner as claimed in claims 6 or 7, it is characterized in that, described processing module comprises:
Acquiring unit, for obtaining the current operating frequency of described compressor;
Computing unit, for calculating the target frequency after frequency reducing according to the operating frequency got according to default frequency reducing ratio value;
Adjustment unit, for adjusting the operating frequency of described compressor according to described target frequency.
9. the anti-condensation control device of air-conditioner as claimed in claim 6, is characterized in that, described humidity value RH1 be described first preset time period environment medial humidity value.
10. the anti-condensation control device of air-conditioner as claimed in claim 6, is characterized in that, described detection module specifically for, after air-conditioner ran for the second preset time period, every the current humidity value RH2 of prefixed time interval testing environment.
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