CN105333569B - The condensation prevention control method and device of air conditioner - Google Patents

The condensation prevention control method and device of air conditioner Download PDF

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Publication number
CN105333569B
CN105333569B CN201510728292.5A CN201510728292A CN105333569B CN 105333569 B CN105333569 B CN 105333569B CN 201510728292 A CN201510728292 A CN 201510728292A CN 105333569 B CN105333569 B CN 105333569B
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Prior art keywords
air conditioner
humidity value
value
threshold
preset time
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CN105333569A (en
Inventor
王磊
李金波
戚文端
邹丁山
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Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
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Midea Group Co Ltd
Guangdong Midea Refrigeration Equipment Co Ltd
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Classifications

    • 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
    • F24F11/30—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
    • F24F11/70—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
    • 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
    • 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
    • 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 kind of condensation prevention control method of air conditioner, the condensation prevention control method of described kind of air conditioner comprises the following steps：Detect the humidity value RH1 of environment in the first preset time period after air conditioner is run；After air conditioner ran for the second preset time period, the humidity value RH2 of environment is detected；Second preset time is more than the first preset time；Judge whether first condition is set up；The difference that the first condition is the 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 reduce the compressor operating frequency of air conditioner；If it is not, then control the compressor operating frequency of air conditioner constant.The invention also discloses a kind of anti-condensation control device of air conditioner.Of the invention effectively prevent in air conditioner running produces dew condensation phenomenon, improves environmental degree of comfort.

Description

The condensation prevention control method and device of air conditioner
Technical field
The present invention relates to the condensation prevention control method and device of air-conditioning technical field, more particularly to air conditioner.
Background technology
It is well known that during air conditioner cooling in summer use, in air outlet position because cold wind and hot blast cross, air Easily condensation is produced when relative humidity is big in air outlet.Condensation water produce after easily the positions such as air outlet, wind guide strip drippage or Person blows out with air-supply.
The content of the invention
It is a primary object of the present invention to provide the condensation prevention control method and device of a kind of air conditioner, it is intended to effectively prevention Dew condensation phenomenon is produced in air conditioner running, improves environmental degree of comfort.
To achieve the above object, a kind of condensation prevention control method of air conditioner provided by the invention comprises the following steps：
Detect the humidity value RH1 of environment in the first preset time period after air conditioner is run；
After air conditioner ran for the second preset time period, the humidity value RH2 of environment is detected；Second preset time is more than First preset time；
Judge whether first condition is set up；The first condition is that the humidity value RH1 and humidity value RH2 difference is less than It is more than or equal to Second Threshold equal to first threshold and humidity value RH1；
If so, then reduce the compressor operating frequency of air conditioner；
If it is not, then control the compressor operating frequency of air conditioner constant.
Preferably, the condensation prevention control method of the air conditioner also includes：
When the first condition is invalid, judge whether second condition is set up；The second condition is the humidity value RH2 and humidity value RH1 difference are more than the 3rd threshold value, humidity value RH1 is less than the Second Threshold and humidity value RH2 is more than the Four threshold values；3rd threshold value is more than the first threshold；
If so, then reduce the compressor operating frequency of air conditioner；
If it is not, then control the compressor operating frequency of air conditioner constant.
Preferably, the compressor operating frequency for reducing air conditioner includes：
Obtain the current working frequency of the compressor；
Target frequency after frequency reducing is calculated according to default frequency reducing ratio value according to the working frequency got；
The working frequency of the compressor is adjusted according to the target frequency.
Preferably, the humidity value RH1 is the medial humidity value of environment in first preset time period.
Preferably, after air conditioner ran for the second preset time period, detecting the humidity value RH2 of environment includes：
After air conditioner ran for the second preset time period, every the current humidity value RH2 of prefixed time interval detection environment.
In addition, to achieve the above object, the present invention also provides a kind of anti-condensation control device of air conditioner, described kind of air-conditioning The anti-condensation control device of device includes：
Detection module, for detecting the humidity value RH1 of environment in the first preset time period after air conditioner is run；In air conditioner After running for the second preset time period, the humidity value RH2 of environment is detected；Second preset time is more than the first preset time；
First judge module, for judging whether first condition is set up；The first condition be the humidity value RH1 with it is wet Angle value RH2 difference is less than or equal to first threshold and humidity value RH1 is more than or equal to Second Threshold；
Processing module, for when the first condition is set up, reducing the compressor operating frequency of air conditioner；Described When one condition is invalid, control the compressor operating frequency of air conditioner constant.
Preferably, the anti-condensation control device of the air conditioner also includes：
Second judge module, for when the first condition is invalid, judging whether second condition is set up；Described second Condition be that the humidity value RH2 and humidity value RH1 difference are more than the 3rd threshold value, humidity value RH1 is less than the Second Threshold and Humidity value RH2 is more than the 4th threshold value；3rd threshold value is more than the first threshold；And when second condition is set up, trigger institute Stating processing module reduces the compressor operating frequency of air conditioner；When second condition is invalid, the processing module control is triggered The compressor operating frequency of air conditioner is constant.
Preferably, the processing module includes：
Acquiring unit, the working frequency current for obtaining the compressor；
Computing unit, for calculating the target frequency after frequency reducing according to default frequency reducing ratio value according to the working frequency got Rate；
Adjustment unit, for adjusting the working frequency of the compressor according to the target frequency.
Preferably, the humidity value RH1 is the medial humidity value of environment in first preset time period.
Preferably, the detection module is specifically used for, after air conditioner ran for the second preset time period, every preset time The current humidity value RH2 of interval detection environment.
In the embodiment of the present invention, by the humidity value RH1 for detecting environment in the first preset time period after air conditioner operation； After air conditioner ran for the second preset time period, the humidity value RH2 of environment is detected；When second preset time is preset more than first Between；Judge whether first condition is set up；The first condition is that the humidity value RH1 and humidity value RH2 difference are less than etc. It is more than or equal to Second Threshold in first threshold and humidity value RH1；If so, then reduce the compressor operating frequency of air conditioner；If It is no, then control the compressor operating frequency of air conditioner constant.Due to adjusting the fortune of compressor according to the variable condition of ambient humidity Row state, so as to effectively prevent to produce dew condensation phenomenon in air conditioner running, improve environmental degree of comfort.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the condensation prevention control method first embodiment of air conditioner of the present invention；
Fig. 2 is the schematic flow sheet of the condensation prevention control method second embodiment of air conditioner of the present invention；
Fig. 3 is that low-frequency refinement flow signal is dropped in the condensation prevention control method 3rd embodiment of air conditioner of the present invention Figure；
Fig. 4 is the high-level schematic functional block diagram of the anti-condensation control device first embodiment of air conditioner of the present invention；
Fig. 5 is the high-level schematic functional block diagram of the anti-condensation control device second embodiment of air conditioner of the present invention；
Fig. 6 shows for the refinement functional module of processing module in the anti-condensation control device 3rd embodiment of air conditioner of the present invention It is intended to.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention provides a kind of condensation prevention control method of air conditioner, reference picture 1, in the anti-condensation control of air conditioner of the present invention In method first embodiment processed, the condensation prevention control method of the air conditioner includes：
Step S10, detect the humidity value RH1 of environment in the first preset time period after air conditioner is run；
The condensation prevention control method for the air conditioner that the present embodiment provides is mainly used in frequency-conversion air-conditioning system, for sky Adjust the compressor frequency of device to be controlled, with prevent during the air conditioner refrigerating operaton or dehumidification mode running in Produce dew condensation phenomenon.
Specifically, the time span of above-mentioned first preset time period can be configured according to being actually needed, the present embodiment When humidity value RH1 refers to that controller refrigeration starts, the initial value of ambient humidity.Therefore the time length of first preset time period Degree is shorter, such as the scope value of the first preset time period can be 0~5 minute, it is preferable that can be 1~2 minute.It is above-mentioned Humidity value RH1 can be the humidity value of a certain moment detection in the first preset time period, or in the first preset time The medial humidity value of environment.For example, the humidity value of a secondary environment can be obtained at regular intervals, then calculate what is repeatedly obtained Being averaged for humidity value is worth to above-mentioned humidity value RH1.It is understood that the detection of humidity value can be carried out according to being actually needed Set, in the present embodiment, it is preferable that humidity sensor can be set in the air inlet of indoor apparatus of air conditioner, to detect environment Humidity value.
Step S20, after air conditioner ran for the second preset time period, detect the humidity value RH2 of environment；Described second is preset Time is more than the first preset time；
Step S30, judges whether first condition is set up；The first condition is the humidity value RH1 and humidity value RH2's Difference is less than or equal to first threshold and humidity value RH1 is more than or equal to Second Threshold；If so, step S40 is then performed, if it is not, then walking Rapid S50；
Step S40, reduce the compressor operating frequency of air conditioner；
Step S50, control the compressor operating frequency of air conditioner constant.
In the present embodiment, the time span of above-mentioned second preset time period can be configured according to being actually needed, herein Do not do and further limit.For example, the scope value of the time span of second preset time period can be 20~40 minutes, it is excellent Elect as 25~35 minutes.Specifically, above-mentioned humidity value, it can be the average value of multi collect, humidity sensor can also be used The humidity value instantaneously gathered.For example, in the present embodiment, above-mentioned steps S20 is specifically as follows：It is preset in air conditioner operation second After period, every the current humidity value RH2 of prefixed time interval detection environment.
After each detection gets current humidity value RH2, first can be carried out according to the humidity value RH2 detected Part judges, judges whether above-mentioned first condition meets.
In practical application, can first determine whether above-mentioned humidity value RH1 is more than or equal to Second Threshold, work as humidity value When RH1 is less than Second Threshold, it is determined that ambient humidity is relatively low, without carrying out down conversion process, then keeps compressor work at present frequency Rate；When humidity value is more than or equal to Second Threshold, it is determined that ambient humidity is higher, may result in environment generation condensation and shows Situation about declining as, it is necessary to determine whether humidity value RH2 and humidity value RH1 size of the difference, determining ambient humidity.Specifically Ground, if judge that humidity value RH1 is more than or equal to Second Threshold, after humidity value RH2 is subsequently detected every time, directly judge wet Whether angle value RH1 and humidity value RH2 difference is less than or equal to first threshold：When humidity value RH1 and humidity value RH2 difference are less than Equal to first threshold, illustrate in air conditioner running, ambient air relative humidity humidity declines seldom, or there are other water Hot repair is charged to interior, and air conditioner continues to run with the risk that condensation occurs, it is necessary to be done to cooler compressor running frequency anti-condensation Dew limitation (the compressor operating frequency for reducing air conditioner)；When humidity value RH1 and humidity value RH2 difference is more than described first Threshold value, illustrate in air conditioner running, ambient air relative humidity humidity declines a lot, and air conditioner, which continues to run with, not to be sent out The risk of raw condensation, cooler compressor running frequency do not do anti-condensation limitation (i.e. not to the compressor operating frequency of air conditioner It is adjusted).
It is understood that above-mentioned first threshold and the size of Second Threshold can be configured according to being actually needed, example Such as, in the present embodiment, the scope value of above-mentioned first threshold can be 1%~15%, preferably 5%~10%；Above-mentioned second The scope value of threshold value can be 60%~75%, preferably 65%~70%.
It is understood that in the present embodiment, in the first preset time period and the second preset time period of air conditioner operation The interior refrigeration that air conditioner can be effectively ensured without anti-condensation operation, so that the temperature value of environment lowers rapidly, with Meet user to temperature requirements.
In the embodiment of the present invention, by the humidity value RH1 for detecting environment in the first preset time period after air conditioner operation； After air conditioner ran for the second preset time period, the humidity value RH2 of environment is detected；When second preset time is preset more than first Between；Judge whether first condition is set up；The first condition is that the humidity value RH1 and humidity value RH2 difference is less than or equal to First threshold and humidity value RH1 is more than or equal to Second Threshold；If so, then reduce the compressor operating frequency of air conditioner；If it is not, Then control the compressor operating frequency of air conditioner constant.Due to adjusting the operation shape of compressor according to the variable condition of ambient humidity State, so as to effectively 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 the condensation prevention control method second embodiment of air conditioner of the present invention In, should also it include before above-mentioned steps S50 is performed：
Step S60, judges whether second condition is set up；The second condition is the humidity value RH2 and humidity value RH1's Difference is more than the 3rd threshold value, humidity value RH1 is less than the Second Threshold and humidity value RH2 is more than the 4th threshold value；3rd threshold Value is more than the first threshold；If so, then performing step S40, step S50 is otherwise performed.
In the present embodiment, when the first condition is invalid, second condition (the humidity value RH2 and humidity value are judged RH1 difference is more than the 3rd threshold value, humidity value RH1 is less than the Second Threshold and humidity value RH2 is more than the 4th threshold value) whether Set up.Specifically, (determine that ambient humidity is relatively low) in the case where humidity value RH1 is less than Second Threshold, in order to avoid in air-conditioning Have in device follow-up operation and rain or other humid air are added in indoor environment, cause situation that ambient humidity is larger, it is necessary to Determine whether humidity value RH2 and humidity value RH1 difference are more than the 3rd threshold value, to prevent the humidity of environment due to outside Influence causes to produce dew condensation phenomenon.As humidity value RH2 and humidity value RH1, and when RH2 is more than four threshold values, then air conditioner is judged The risk that condensation occurs is continued to run with, it is necessary to do anti-condensation limitation to cooler compressor running frequency.
It is to be appreciated that the size of above-mentioned 3rd threshold value and the 4th threshold value can be carried out according to being actually needed, the present embodiment In, the span of above-mentioned 3rd threshold value can be 10%~30%, preferably 15%~25%；The value of above-mentioned 4th threshold value It may range from 70%~90%, preferably 75%~85%.
Further, reference picture 3, it is real in the condensation prevention control method the 3rd of air conditioner of the present invention based on above-described embodiment Apply in example, the compressor operating frequency of above-mentioned reduction air conditioner includes：
Step S31, obtain the current working frequency of the compressor；
Step S32, the target frequency after frequency reducing is calculated according to default frequency reducing ratio value according to the working frequency got；
Step S33, the working frequency of the compressor is adjusted according to the target frequency.
In the present embodiment, above-mentioned frequency reducing ratio value can be configured according to being actually needed, for example, below with frequency reducing ratio Value is 1.1 to be described in detail.The current working frequency Fn of compressor can be obtained first, calculated according to above-mentioned frequency reducing ratio value The target frequency of acquisition is Fn/1.1；Then the working frequency of compressor is adjusted to Fn/1.1.It is understood that in order to protect Demonstrate,prove refrigeration, it is preferable that the lower limit of working frequency can be set.Specifically, when Fn/1.1 is less than the lower limit, then directly Connect and used the lower limit as the working frequency of target frequency control compressor.Being in the current working frequency of compressor should During lower limit, down conversion process is no longer carried out, so as to prevent the working frequency of compressor too low, causes air conditioner can not normal work Make.
The present invention also provides a kind of anti-condensation control device of air conditioner, and reference picture 4, in one embodiment, the present invention carries The anti-condensation control device of the air conditioner of confession includes：
Detection module 10, for detecting the humidity value RH1 of environment in the first preset time period after air conditioner is run；In air-conditioning After device ran for the second preset time period, the humidity value RH2 of environment is detected；Second preset time is more than the first preset time；
First judge module 20, for judging whether first condition is set up；The first condition be the humidity value RH1 with Humidity value RH2 difference 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 the first condition is set up, reducing the compressor operating frequency of air conditioner；Described When first condition is invalid, control the compressor operating frequency of air conditioner constant.
The anti-condensation control device for the air conditioner that the present embodiment provides is mainly used in frequency-conversion air-conditioning system, for sky Adjust the compressor frequency of device to be controlled, with prevent during the air conditioner refrigerating operaton or dehumidification mode running in Produce dew condensation phenomenon.
Specifically, the time span of above-mentioned first preset time period can be configured according to being actually needed, the present embodiment When humidity value RH1 refers to that controller refrigeration starts, the initial value of ambient humidity.Therefore the time length of first preset time period Degree is shorter, such as the scope value of the first preset time period can be 0~5 minute, it is preferable that can be 1~2 minute.It is above-mentioned Humidity value RH1 can be the humidity value of a certain moment detection in the first preset time period, or in the first preset time The medial humidity value of environment.For example, the humidity value of a secondary environment can be obtained at regular intervals, then calculate what is repeatedly obtained Being averaged for humidity value is worth to above-mentioned humidity value RH1.It is understood that the detection of humidity value can be carried out according to being actually needed Set, in the present embodiment, it is preferable that humidity sensor can be set in the air inlet of indoor apparatus of air conditioner, to detect environment Humidity value.
In the present embodiment, the time span of above-mentioned second preset time period can be configured according to being actually needed, herein Do not do and further limit.For example, the scope value of the time span of second preset time period can be 20~40 minutes, it is excellent Elect as 25~35 minutes.Specifically, above-mentioned humidity value, it can be the average value of multi collect, humidity sensor can also be used The humidity value instantaneously gathered.For example, in the present embodiment, above-mentioned detection module 10 is specifically used for, it is pre- in air conditioner operation second After putting the period, every the current humidity value RH2 of prefixed time interval detection environment.
After each detection gets current humidity value RH2, first can be carried out according to the humidity value RH2 detected Part judges, judges whether above-mentioned first condition meets.
In practical application, can first determine whether above-mentioned humidity value RH1 is more than or equal to Second Threshold, work as humidity value When RH1 is less than Second Threshold, it is determined that ambient humidity is relatively low, without carrying out down conversion process, then keeps compressor work at present frequency Rate；When humidity value is more than or equal to Second Threshold, it is determined that ambient humidity is higher, may result in environment generation condensation and shows Situation about declining as, it is necessary to determine whether humidity value RH2 and humidity value RH1 size of the difference, determining ambient humidity.Specifically Ground, if judge that humidity value RH1 is more than or equal to Second Threshold, after humidity value RH2 is subsequently detected every time, directly judge wet Whether angle value RH1 and humidity value RH2 difference is less than or equal to first threshold：When humidity value RH1 and humidity value RH2 difference are less than Equal to first threshold, illustrate in air conditioner running, ambient air relative humidity humidity declines seldom, or there are other water Hot repair is charged to interior, and air conditioner continues to run with the risk that condensation occurs, it is necessary to be done to cooler compressor running frequency anti-condensation Dew limitation (the compressor operating frequency for reducing air conditioner)；When humidity value RH1 and humidity value RH2 difference is more than described first Threshold value, illustrate in air conditioner running, ambient air relative humidity humidity declines a lot, and air conditioner, which continues to run with, not to be sent out The risk of raw condensation, cooler compressor running frequency do not do anti-condensation limitation (i.e. not to the compressor operating frequency of air conditioner It is adjusted).
It is understood that above-mentioned first threshold and the size of Second Threshold can be configured according to being actually needed, example Such as, in the present embodiment, the scope value of above-mentioned first threshold can be 1%~15%, preferably 5%~10%；Above-mentioned second The scope value of threshold value can be 60%~75%, preferably 65%~70%.
It is understood that in the present embodiment, in the first preset time period and the second preset time period of air conditioner operation The interior refrigeration that air conditioner can be effectively ensured without anti-condensation operation, so that the temperature value of environment lowers rapidly, with Meet user to temperature requirements.
In the embodiment of the present invention, by the humidity value RH1 for detecting environment in the first preset time period after air conditioner operation； After air conditioner ran for the second preset time period, the humidity value RH2 of environment is detected；When second preset time is preset more than first Between；Judge whether first condition is set up；The first condition is that the humidity value RH1 and humidity value RH2 difference is less than or equal to First threshold and humidity value RH1 is more than or equal to Second Threshold；If so, then reduce the compressor operating frequency of air conditioner；If it is not, Then control the compressor operating frequency of air conditioner constant.Due to adjusting the operation shape of compressor according to the variable condition of ambient humidity State, so as to effectively 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 the anti-condensation control device second embodiment of air conditioner of the present invention In, the anti-condensation control device of above-mentioned air conditioner also includes：
Second judge module 40, for when the first condition is invalid, judging whether second condition is set up；Described The difference that two conditions are the humidity value RH2 and humidity value RH1 is more than the 3rd threshold value, humidity value RH1 is less than the Second Threshold, And humidity value RH2 is more than the 4th threshold value；3rd threshold value is more than the first threshold；And when second condition is set up, triggering The processing module 30 reduces the compressor operating frequency of air conditioner；When second condition is invalid, the processing module is triggered The compressor operating frequency of 30 control air conditioners is constant.
In the present embodiment, when the first condition is invalid, second condition (the humidity value RH2 and humidity value are judged RH1 difference is more than the 3rd threshold value, humidity value RH1 is less than the Second Threshold and humidity value RH2 is more than the 4th threshold value) whether Set up.Specifically, (determine that ambient humidity is relatively low) in the case where humidity value RH1 is less than Second Threshold, in order to avoid in air-conditioning Have in device follow-up operation and rain or other humid air are added in indoor environment, cause situation that ambient humidity is larger, it is necessary to Determine whether humidity value RH2 and humidity value RH1 difference are more than the 3rd threshold value, to prevent the humidity of environment due to outside Influence causes to produce dew condensation phenomenon.As humidity value RH2 and humidity value RH1, and when RH2 is more than four threshold values, then air conditioner is judged The risk that condensation occurs is continued to run with, it is necessary to do anti-condensation limitation to cooler compressor running frequency.
It is to be appreciated that the size of above-mentioned 3rd threshold value and the 4th threshold value can be carried out according to being actually needed, the present embodiment In, the span of above-mentioned 3rd threshold value can be 10%~30%, preferably 15%~25%；The value of above-mentioned 4th threshold value It may range from 70%~90%, preferably 75%~85%.
Further, reference picture 6, it is real in the anti-condensation control device the 3rd of air conditioner of the present invention based on above-described embodiment Apply in example, above-mentioned processing module 30 includes：
Acquiring unit 31, the working frequency current for obtaining the compressor；
Computing unit 32, for calculating the target after frequency reducing according to default frequency reducing ratio value according to the working frequency got Frequency；
Adjustment unit 33, for adjusting the working frequency of the compressor according to the target frequency.
In the present embodiment, above-mentioned frequency reducing ratio value can be configured according to being actually needed, for example, below with frequency reducing ratio Value is 1.1 to be described in detail.The current working frequency Fn of compressor can be obtained first, calculated according to above-mentioned frequency reducing ratio value The target frequency of acquisition is Fn/1.1；Then the working frequency of compressor is adjusted to Fn/1.1.It is understood that in order to protect Demonstrate,prove refrigeration, it is preferable that the lower limit of working frequency can be set.Specifically, when Fn/1.1 is less than the lower limit, then directly Connect and used the lower limit as the working frequency of target frequency control compressor.Being in the current working frequency of compressor should During lower limit, down conversion process is no longer carried out, so as to prevent the working frequency of compressor too low, causes air conditioner can not normal work Make.
The preferred embodiments of the present invention are these are only, are not intended to limit the scope of the invention, it is every to utilize this hair The equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills Art field, is included within the scope of the present invention.

Claims (8)

  1. A kind of 1. condensation prevention control method of air conditioner, it is characterised in that the condensation prevention control method of the air conditioner include with Lower step：
    Detect the humidity value RH1 of environment in the first preset time period after air conditioner is run；
    After air conditioner ran for the second preset time period, the humidity value RH2 of environment is detected；Second preset time is more than first Preset time；
    Judge whether first condition is set up；The first condition is that the humidity value RH1 and humidity value RH2 difference is less than or equal to First threshold and humidity value RH1 is more than or equal to Second Threshold；
    If so, then reduce the compressor operating frequency of air conditioner；
    If it is not, then control the compressor operating frequency of air conditioner constant；
    When the first condition is invalid, judge whether second condition is set up；The second condition be the humidity value RH2 with Humidity value RH1 difference is more than the 3rd threshold value, humidity value RH1 is less than the Second Threshold and humidity value RH2 is more than the 4th threshold Value；3rd threshold value is more than the first threshold；
    If so, then reduce the compressor operating frequency of air conditioner；
    If it is not, then control the compressor operating frequency of air conditioner constant.
  2. 2. the condensation prevention control method of air conditioner as claimed in claim 1, it is characterised in that the compression for reducing air conditioner Machine working frequency includes：
    Obtain the current working frequency of the compressor；
    Target frequency after frequency reducing is calculated according to default frequency reducing ratio value according to the working frequency got；
    The working frequency of the compressor is adjusted according to the target frequency.
  3. 3. the condensation prevention control method of air conditioner as claimed in claim 1, it is characterised in that the humidity value RH1 is described The medial humidity value of environment in first preset time period.
  4. 4. the condensation prevention control method of air conditioner as claimed in claim 1, it is characterised in that preset in air conditioner operation second After period, detecting the humidity value RH2 of environment includes：
    After air conditioner ran for the second preset time period, every the current humidity value RH2 of prefixed time interval detection environment.
  5. 5. the anti-condensation control device of a kind of air conditioner, it is characterised in that the anti-condensation control device of the air conditioner includes：
    Detection module, for detecting the humidity value RH1 of environment in the first preset time period after air conditioner is run；Run in air conditioner After second preset time period, the humidity value RH2 of environment is detected；Second preset time is more than the first preset time；
    First judge module, for judging whether first condition is set up；The first condition is the humidity value RH1 and humidity value RH2 difference is less than or equal to first threshold and humidity value RH1 is more than or equal to Second Threshold；
    Processing module, for when the first condition is set up, reducing the compressor operating frequency of air conditioner；At described first When part is invalid, control the compressor operating frequency of air conditioner constant；
    Second judge module, for when the first condition is invalid, judging whether second condition is set up；The second condition It is less than the Second Threshold and humidity more than the 3rd threshold value, humidity value RH1 for the humidity value RH2 and humidity value RH1 difference Value RH2 is more than the 4th threshold value；3rd threshold value is more than the first threshold；And when second condition is set up, trigger the place Managing module reduces the compressor operating frequency of air conditioner；When second condition is invalid, the processing module control air-conditioning is triggered The compressor operating frequency of device is constant.
  6. 6. the anti-condensation control device of air conditioner as claimed in claim 5, it is characterised in that the processing module includes：
    Acquiring unit, the working frequency current for obtaining the compressor；
    Computing unit, for calculating the target frequency after frequency reducing according to default frequency reducing ratio value according to the working frequency got；
    Adjustment unit, for adjusting the working frequency of the compressor according to the target frequency.
  7. 7. the anti-condensation control device of air conditioner as claimed in claim 5, it is characterised in that the humidity value RH1 is described The medial humidity value of environment in first preset time period.
  8. 8. the anti-condensation control device of air conditioner as claimed in claim 5, it is characterised in that the detection module is specifically used In after air conditioner ran for the second preset time period, every the current humidity value RH2 of prefixed time interval detection environment.
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