CN104949270A - Refrigeration control method and device of air conditioner and air conditioner - Google Patents
Refrigeration control method and device of air conditioner and air conditioner Download PDFInfo
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- CN104949270A CN104949270A CN201510325468.2A CN201510325468A CN104949270A CN 104949270 A CN104949270 A CN 104949270A CN 201510325468 A CN201510325468 A CN 201510325468A CN 104949270 A CN104949270 A CN 104949270A
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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
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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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
- F24F2110/10—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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Atmospheric Sciences (AREA)
- Physics & Mathematics (AREA)
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- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a refrigeration control method of an air conditioner. The method includes the steps that when the air conditioner is in a refrigeration mode, current indoor environment temperature and current indoor environment humidity are acquired; current indoor moisture content is acquired according to the current indoor environment temperature and the current indoor environment humidity; when current indoor moisture content is smaller than or equal to target moisture content, the temperature of a coil pipe of an indoor heat exchanger of the air conditioner is detected; whether the temperature of the coil pipe of the indoor heat exchanger is smaller than or equal to dew point temperature of current air or not is judged, if yes, the running air speed of an indoor draught fan of the air conditioner and the running frequency of a compressor are adjusted. The invention further discloses a refrigeration control device of the air conditioner and the air conditioner. By means of the refrigeration control method and device of the air conditioner, in the refrigeration running process of the air conditioner, the indoor environment humidity is maintained at target humidity, and the comfort generated when a user uses the air conditioner is improved. Besides, a humidifying device and other parts do not need to be additionally arranged, and the manufacturing cost of the air conditioner is reduced.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly relate to a kind of refrigeration control method of air-conditioner, device and air-conditioner.
Background technology
Air-conditioner is in refrigerating operaton process, and before indoor environment temperature reaches target temperature, when the load of indoor environment is larger, air-conditioner cooling and maintenance load need larger refrigerating capacity.The compressor of air-conditioner will keep higher frequency to run always, and the indoor heat exchanger coil temperature of air-conditioner can be caused too low, and always lower than the dew-point temperature of air.Thus make air-conditioner be in the state of refrigerated dehumidification always, cause user's indoor environment humidity in the process of using air-condition device lower and feel very dry.Accordingly, when the load of indoor environment is less, the refrigerating capacity that air-conditioner maintains load needs is less.Therefore the compressor of air-conditioner keeps low frequency to run always, and the indoor heat exchanger coil temperature of air-conditioner can be caused higher.Thus the state making air-conditioner always be in refrigeration not dehumidify, cause user's indoor environment humidity in the process of using air-condition device higher and feel more vexed wet.
At present, existing air-conditioner is in process of refrigerastion, and the control of indoor environment humidity mainly uses humidifier or other humidification apparatus.When indoor environment is drier in refrigerated dehumidification process, adopts humidifier to carry out humidification, but control at different temperature in comfort humidity in the dehumidification process indoor environment that is also comparatively hard to keep, easily make user feel dry or vexed wet.
Summary of the invention
Main purpose of the present invention is to provide a kind of refrigeration control method of air-conditioner, device and air-conditioner, is intended to realize air-conditioner and maintains indoor environment humidity at target humidity in the process of refrigeration, and reduces the cost that air-conditioner manufactures.
For achieving the above object, the invention provides a kind of refrigeration control method of air-conditioner, comprise the following steps:
S1, when air-conditioner enters refrigeration mode, obtain current indoor environment temperature and current indoor ambient humidity;
S2, obtain current indoor water capacity according to described current indoor environment temperature and described current indoor ambient humidity;
S3, when described current indoor water capacity is less than or equal to target moisture content, detect the indoor heat exchanger coil temperature of described air-conditioner;
S4, judge whether described indoor heat exchanger coil temperature is less than or equal to the dew-point temperature of present air;
S5, if so, then regulate the operating air velocity of the indoor fan of described air-conditioner and the running frequency of compressor, and proceed to step S1;
S6, if not, then proceed to step S1.
Preferably, comprise after described step S2:
When described current indoor water capacity is greater than target moisture content, detect the indoor heat exchanger coil temperature of described air-conditioner;
Judge whether described indoor heat exchanger coil temperature is greater than the dew-point temperature of present air;
If so, then the wind speed of current for described indoor fan operation is reduced by first and preset wind speed, maintain the first Preset Time, and proceed to step S1;
If not, then step S1 is proceeded to.
Preferably, described step S5 comprises:
What control described indoor fan operates in preset wind speed, and every the second Preset Time, the frequency of current for described compressor operation is reduced the first predeterminated frequency, until reach predetermined frequency, and proceeds to step S1.
Preferably, described step S5 comprises:
The operating air velocity of described indoor fan is increased by second and presets wind speed, and every the 3rd Preset Time, the frequency of current for described compressor operation is reduced the second predeterminated frequency, until reach predetermined frequency, and proceeds to step S1.
In addition, for achieving the above object, present invention also offers a kind of refrigeration control device of air-conditioner, comprising:
Acquisition module, for obtaining current indoor environment temperature and current indoor ambient humidity when air-conditioner enters refrigeration mode;
Water capacity acquisition module, for obtaining current indoor water capacity according to described current indoor environment temperature and described current indoor ambient humidity;
First detection module, for when described current indoor water capacity is less than or equal to target moisture content, detects the indoor heat exchanger coil temperature of described air-conditioner;
First judge module, for judging whether described indoor heat exchanger coil temperature is less than or equal to the dew-point temperature of present air;
First processing module, if be less than or equal to the dew-point temperature of present air for described indoor heat exchanger coil temperature, then regulate the operating air velocity of the indoor fan of described air-conditioner and the running frequency of compressor, and continued to obtain current indoor environment temperature and current indoor ambient humidity by acquisition module; Otherwise, directly continued to obtain current indoor environment temperature and current indoor ambient humidity by acquisition module.
Preferably, the refrigeration control device of described air-conditioner also comprises:
Second detection module, for when described current indoor water capacity is greater than target moisture content, detects the indoor heat exchanger coil temperature of described air-conditioner;
Second judge module, for judging whether described indoor heat exchanger coil temperature is greater than the dew-point temperature of present air;
Second processing module, if be greater than the dew-point temperature of present air for described indoor heat exchanger coil temperature, then the wind speed of current for described indoor fan operation is reduced by first and preset wind speed, maintain the first Preset Time, and continued to obtain current indoor environment temperature and current indoor ambient humidity by acquisition module; Otherwise, directly continued to obtain current indoor environment temperature and current indoor ambient humidity by acquisition module.
Preferably, described first processing module also for, what control described indoor fan operates in preset wind speed, and every the second Preset Time, the frequency of current for described compressor operation is reduced the first predeterminated frequency, until reach predetermined frequency, and continued to obtain current indoor environment temperature and current indoor ambient humidity by acquisition module.
Preferably, described first processing module also for, the operating air velocity of described indoor fan is increased by second and presets wind speed, and every the 3rd Preset Time, the frequency of current for described compressor operation is reduced the second predeterminated frequency, until reach predetermined frequency, and continued to obtain current indoor environment temperature and current indoor ambient humidity by acquisition module.
In addition, for achieving the above object, present invention also offers a kind of air-conditioner, the indoor set of described air-conditioner is provided with temperature sensor, humidity sensor and indoor heat exchanger coil temperature detection module, be respectively used to gather current indoor environment temperature, current indoor ambient humidity and indoor heat exchanger coil temperature, described air-conditioner also comprises the refrigeration control device of the air-conditioner of said structure, described refrigeration control device is used for obtaining current indoor water capacity according to described current indoor environment temperature and described current indoor ambient humidity, and be less than or equal to target moisture content when meeting described current indoor water capacity, and indoor heat exchanger coil temperature is when being less than or equal to the dew-point temperature of present air, regulate the operating air velocity of the indoor fan of described air-conditioner and the running frequency of compressor.
The embodiment of the present invention is when air-conditioner enters refrigeration mode, according to obtained current indoor environment temperature and current indoor ambient humidity determination current indoor water capacity, if current indoor water capacity is less than or equal to target moisture content, then judge whether the indoor heat exchanger coil temperature detected is less than or equal to the dew-point temperature of present air.If so, the operating air velocity of indoor fan and the running frequency of compressor of described air-conditioner is then regulated.Make comparing by current indoor water capacity and target moisture content, judge that air-conditioner is the need of dehumidifying, thus regulate the operating air velocity of indoor fan and the running frequency of compressor of air-conditioner, achieve air-conditioner in process of refrigerastion, maintain indoor environment humidity at target humidity.In addition, air-conditioner does not need to increase the parts such as humidification apparatus, reduces the manufacturing cost of air-conditioner.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of refrigeration control method first embodiment of air-conditioner of the present invention;
Fig. 2 is the schematic flow sheet of refrigeration control method second embodiment of air-conditioner of the present invention;
Fig. 3 is the high-level schematic functional block diagram of refrigeration control device first embodiment of air-conditioner of the present invention;
Fig. 4 is the high-level schematic functional block diagram of refrigeration control device second embodiment of air-conditioner of the present invention;
Fig. 5 is a kind of structural representation realizing the air-conditioner of refrigeration control 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.
As shown in Figure 1, refrigeration control method first embodiment of a kind of air-conditioner of the present invention is shown.The refrigeration control method of the air-conditioner of this embodiment comprises the following steps:
Step S10, when air-conditioner enters refrigeration mode, obtain current indoor environment temperature and current indoor ambient humidity;
Air-conditioner electrifying startup, when entering refrigeration mode, user is by remote controller, or button preset on air-conditioner, touch-screen etc. set target temperature, if user does not set target temperature, then air-conditioner will carry out refrigerating operaton according to the temperature of acquiescence, and the temperature of this acquiescence can be the temperature before the last power-off of air-conditioner.Simultaneously, air-conditioner can be by button preset on air-conditioner, touch-screen according to user, or the wind speed that remote controller etc. carry out setting runs, also can be run according to the wind speed given tacit consent to during air-conditioner refrigerating operaton, the wind speed of this acquiescence can be and forms proportional relation with indoor environment temperature, namely the wind speed of indoor environment temperature this acquiescence higher is larger, otherwise the wind speed of indoor environment temperature this acquiescence lower is less.
In the present embodiment target humidity can be user according to the demand of oneself by remote controller or air-conditioner preset the mode such as button, touch-screen, virtual key arrange, to reach the comfortableness demand of different user.If user does not set target humidity, comfortable humidity is maintained in order to make the humidity of indoor environment better, improve the comfortableness of user's using air-condition device, then target humidity now can be the preset comfort humidity corresponding with current indoor environment temperature, namely air-conditioner will obtain the preset comfort humidity corresponding with current indoor environment temperature, and using this preset comfort humidity as target humidity.
In the present embodiment, will the mapping relations of current indoor environment temperature T1 and preset comfort humidity Φ s be pre-set, as shown in table 1:
The mapping relations of table 1. current indoor environment temperature and preset comfort humidity
As shown in Table 1, in advance current indoor environment temperature T1 is divided into 9 temperature ranges, the preset comfort humidity Φ s that each temperature range is corresponding different, along with current indoor environment temperature T1 raises, preset comfort humidity Φ s reduces gradually.When current indoor environment temperature T1 is less than 13 DEG C, preset comfort humidity Φ s is 70%; When current indoor environment temperature T1 is more than or equal to 27 DEG C, preset comfort humidity Φ s is 30%.Such as, when the current indoor environment temperature T1 obtained is 16 DEG C, be positioned at the temperature range of 15 DEG C≤T1 < 17 DEG C, then obtaining corresponding preset comfort humidity Φ s is 60%, controls the humidity that air-conditioner operates in 60%.Be understandable that, the value of each parameter in above-mentioned table 1 can be arranged as the case may be and flexibly, does not limit the present invention.
It should be noted that, in table 1, the data of preset comfort humidity can according to after acquisition current indoor environment temperature T1, computing formula by between current indoor environment temperature T1 and preset comfort humidity Φ s: Φ s=a × T1+b, calculate preset comfort humidity Φ s, wherein, a, b are constant coefficient, such as, and Φ s=1-0.025 × T1.
In the present embodiment, air-conditioner comprises and is installed on temperature sensor on indoor set and humidity sensor, detects current indoor environment temperature, and detect current indoor ambient humidity by humidity sensor by temperature sensor.Certainly, current indoor environment temperature also detects by temperature collect module preset on indoor set, and current indoor ambient humidity also detects by humidity collection module preset on indoor set.
Step S20, obtain current indoor water capacity according to described current indoor environment temperature and described current indoor ambient humidity;
Current indoor water capacity can according to the mapping relations of current indoor environment temperature and current indoor ambient humidity by acquisition of tabling look-up, in the present embodiment, by pre-setting the mapping relations between current indoor environment temperature, current indoor ambient humidity and current indoor water capacity, as shown in table 2.Wherein, T1, T2, T3 ... Tn represents the different temperatures value of current indoor environment temperature, Φ 1, Φ 2, Φ 3... Φ n represent the DIFFERENT WET angle value of current indoor ambient humidity, d11, d12, d13 ... dnn represents the different moisture content values of current indoor water capacity, be understandable that, the value of n and the value of parameters can be arranged as the case may be and flexibly, do not limit the present invention.
Mapping relations between table 2. current indoor environment temperature, current indoor ambient humidity and current indoor water capacity
As shown in Table 2, suppose that the front indoor environment temperature detected is T1, the current indoor ambient humidity detected is Φ 3, then can obtain corresponding current indoor water capacity by question blank 2 is d31.Therefore, current indoor water capacity can be determined by current indoor environment temperature and current indoor ambient humidity.
Step S30, when described current indoor water capacity is less than or equal to target moisture content, detect the indoor heat exchanger coil temperature of described air-conditioner;
Above-mentioned obtain current indoor water capacity after, current indoor water capacity and target moisture content are compared.This target moisture content is the water capacity corresponding with target temperature and target humidity, and inquiring about above-mentioned table 2 according to target temperature and target humidity can know target moisture content.This target humidity is the indoor environment humidity that target temperature is corresponding.Judge that air-conditioner needs to carry out refrigerated dehumidification or needs and carries out freezing and do not dehumidify, to prevent indoor environment humidity too low or too high according to the magnitude relationship between current indoor water capacity and target moisture content.In the present embodiment, air-conditioner also comprises indoor heat exchanger coil temperature detection module, if current indoor water capacity is less than or equal to target moisture content, is then detected the indoor heat exchanger coil temperature of air-conditioner by indoor heat exchanger coil temperature detection module.
Step S40, judge whether described indoor heat exchanger coil temperature is less than or equal to the dew-point temperature of present air; If so, then step S50 is performed; If not, then above-mentioned steps S10 is performed;
Above-mentioned obtain indoor heat exchanger coil temperature after, the dew-point temperature of indoor heat exchanger coil temperature and present air compared, the dew-point temperature of this present air is by acquisition of tabling look-up.In the present embodiment, by pre-set current indoor environment temperature, current indoor ambient humidity and present air dew-point temperature between mapping relations, as shown in table 3.Wherein, T1, T2, T3 ... Tn represents the different temperatures value of current indoor environment temperature, and Φ 1, Φ 2, Φ 3... Φ n represent the DIFFERENT WET angle value of current indoor ambient humidity, T
l11, T
l12, T
l13t
lnnrepresent the different dew point temperature value of the dew-point temperature of present air, be understandable that, the value of n and the value of parameters can be arranged as the case may be and flexibly, do not limit the present invention.
Mapping relations between the dew-point temperature of table 3. current indoor environment temperature, current indoor ambient humidity and present air
As shown in Table 3, suppose that the front indoor environment temperature detected is T3, the current indoor ambient humidity detected is Φ 1, then the dew-point temperature that can be obtained the present air of correspondence by question blank 3 is T
l13.Therefore, the dew-point temperature of present air can be determined by current indoor environment temperature and current indoor ambient humidity.
Step S50, regulate the operating air velocity of the indoor fan of described air-conditioner and the running frequency of compressor, and perform above-mentioned steps S10.
If indoor heat exchanger coil temperature is less than or equal to the dew-point temperature of present air, air-conditioner is in refrigerated dehumidification state, now because current indoor water capacity is less than or equal to target moisture content, and do not dehumidify to control air-conditioner, make indoor environment humidity reach target humidity, then regulate the operating air velocity of the indoor fan of air-conditioner and the running frequency of compressor.
Further, in one embodiment, what control described indoor fan operates in preset wind speed, and every the second Preset Time, the frequency of current for described compressor operation is reduced the first predeterminated frequency, until reach predetermined frequency.
Do not dehumidify to control air-conditioner, control room inner blower operate in preset wind speed.If above-mentioned user has set the wind speed that indoor fan runs, then this preset wind speed has been the wind speed that user sets; If user does not set the wind speed that indoor fan runs, then this preset wind speed is the wind speed of acquiescence, and acquiescence wind speed now can be 100%.Meanwhile, every the second Preset Time, the frequency of current for the compressor of air-conditioner operation is reduced the first predeterminated frequency, until reach predetermined frequency, to improve indoor heat exchanger coil temperature.This second Preset Time is to enable compressor stable operation, 5 minutes can be set to, this first predeterminated frequency can be set to 0.8 times of the frequency of current operation, this predetermined frequency can be set to minimum frequency values, such as 10Hz, be understandable that, the second Preset Time, the first predeterminated frequency and predetermined frequency also can be arranged as the case may be and flexibly, do not limit the present invention.Thus prevent air-conditioner to be in refrigerated dehumidification state always, cause air-conditioner indoor environment in process of refrigerastion drier.
After the running frequency of compressor reaches predetermined frequency, continue to obtain current indoor environment temperature and current indoor ambient humidity, circulation performs above-mentioned steps S10 to step S50, to make indoor environment humidity reach target humidity, until air-conditioner power-off quits work.
Further, in another embodiment, the operating air velocity of described indoor fan is increased by second and presets wind speed, and every the 3rd Preset Time, the frequency of current for described compressor operation is reduced the second predeterminated frequency, until reach predetermined frequency.
Do not dehumidify to control air-conditioner, then the operating air velocity of indoor fan is increased by second and preset wind speed.This second default wind speed can be set to 10%, also can arrange as the case may be and flexibly.Meanwhile, every the 3rd Preset Time, the frequency of current for the compressor of air-conditioner operation is reduced the second predeterminated frequency, until reach predetermined frequency, to improve indoor heat exchanger coil temperature.3rd Preset Time is to enable compressor stable operation, 5 minutes can be set to, this second predeterminated frequency can be set to 0.8 times of the frequency of current operation, this predetermined frequency can be set to minimum frequency values, such as 10Hz, be understandable that, the 3rd Preset Time, the second predeterminated frequency and predetermined frequency also can be arranged as the case may be and flexibly, do not limit the present invention.Thus prevent air-conditioner to be in refrigerated dehumidification state always, cause air-conditioner indoor environment in process of refrigerastion drier.
After the running frequency of compressor reaches predetermined frequency, continue to obtain current indoor environment temperature and current indoor ambient humidity, circulation performs above-mentioned steps S10 to step S50, to make indoor environment humidity reach target humidity, until air-conditioner power-off quits work.
If indoor heat exchanger coil temperature is greater than the dew-point temperature of present air, now air-conditioner is in refrigeration not except wet condition, then do not need the operating air velocity of conditioning chamber inner blower and the running frequency of compressor, directly continue to obtain current indoor environment temperature and current indoor ambient humidity, circulation performs above-mentioned steps S10 to step S50, to make indoor environment humidity reach target humidity, until air-conditioner power-off quits work.
The embodiment of the present invention when air-conditioner enters refrigeration mode, according to detecting the current indoor environment temperature that obtains and current indoor ambient humidity determination current indoor water capacity.If current indoor water capacity is less than or equal to target moisture content, then judge whether the indoor heat exchanger coil temperature detected is less than or equal to the dew-point temperature of present air.If so, the operating air velocity of indoor fan and the running frequency of compressor of described air-conditioner is then regulated.Make air-conditioner comparing by current indoor water capacity and target moisture content, judge whether that needs dehumidify, thus regulate the operating air velocity of indoor fan and the running frequency of compressor of air-conditioner, achieve air-conditioner in process of refrigerastion, maintain indoor environment humidity at target humidity, improve the comfortableness of user's using air-condition device.In addition, air-conditioner does not need to increase the parts such as humidification apparatus, reduces the manufacturing cost of air-conditioner.
Further, as shown in Figure 2, based on above-described embodiment, in the present embodiment, can comprise the following steps after above-mentioned steps S20:
Step S60, judge whether current indoor water capacity is less than or equal to target moisture content;
Step S70, when described current indoor water capacity is greater than target moisture content, detect the indoor heat exchanger coil temperature of described air-conditioner;
Step S80, judge whether described indoor heat exchanger coil temperature is greater than the dew-point temperature of present air; If so, then step S90 is performed; If not, then above-mentioned steps S10 is performed;
Step S90, by the wind speed of current for described indoor fan operation reduce by first preset wind speed, maintain the first Preset Time, and perform above-mentioned steps S10.
Above-mentioned obtain current indoor water capacity after, current indoor water capacity and target moisture content are compared, this target moisture content is above-mentioned target moisture content.If current indoor water capacity is greater than target moisture content, is then detected the indoor heat exchanger coil temperature of air-conditioner by indoor heat exchanger coil temperature detection module, and the dew-point temperature of indoor heat exchanger coil temperature and present air is compared.The dew-point temperature of present air obtains by above-mentioned question blank 3.
If indoor heat exchanger coil temperature is greater than the dew-point temperature of present air, air-conditioner is in refrigeration not except wet condition, now because current indoor water capacity is greater than target moisture content, and dehumidify to control air-conditioner, make indoor environment humidity reach target humidity, then the wind speed of current for the indoor fan of air-conditioner operation is reduced by first and preset wind speed.This first default wind speed can be set to 10%, also can arrange as the case may be and flexibly.Thus prevent air-conditioner to be in refrigeration not except wet condition always, cause air-conditioner indoor environment in process of refrigerastion more vexed wet.
Indoor fan runs according to the wind speed after adjustment, through the first Preset Time, run to make indoor fan reach stable after, continue to obtain current indoor environment temperature and current indoor ambient humidity, circulation performs above-mentioned steps S10 to step S90, to make indoor environment humidity reach target humidity, until air-conditioner power-off quits work.This first Preset Time can be set to 5 minutes, also can arrange as the case may be and flexibly.
If indoor heat exchanger coil temperature is less than or equal to the dew-point temperature of present air, now air-conditioner is in refrigerated dehumidification state, then do not need the operating air velocity of conditioning chamber inner blower, directly continue to obtain current indoor environment temperature and current indoor ambient humidity, circulation performs above-mentioned steps S10 to step S90, to make indoor environment humidity reach target humidity, until air-conditioner power-off quits work.
Accordingly, as shown in Figure 3, refrigeration control device first embodiment of a kind of air-conditioner of the present invention is proposed.The refrigeration control device of the air-conditioner of this embodiment comprises:
Acquisition module 100, for when air-conditioner enters refrigeration mode, obtains current indoor environment temperature and current indoor ambient humidity;
Air-conditioner electrifying startup, when entering refrigeration mode, user is by remote controller, or button preset on air-conditioner, touch-screen etc. set target temperature, if user does not set target temperature, then air-conditioner will carry out refrigerating operaton according to the temperature of acquiescence, and the temperature of this acquiescence can be the temperature before the last power-off of air-conditioner.Simultaneously, air-conditioner can be by button preset on air-conditioner, touch-screen according to user, or the wind speed that remote controller etc. carry out setting runs, also can be run according to the wind speed given tacit consent to during air-conditioner refrigerating operaton, the wind speed of this acquiescence can be and forms proportional relation with indoor environment temperature, namely the wind speed of indoor environment temperature this acquiescence higher is larger, otherwise the wind speed of indoor environment temperature this acquiescence lower is less.
In the present embodiment target humidity can be user according to the demand of oneself by remote controller or air-conditioner preset the mode such as button, touch-screen, virtual key arrange, to reach the comfortableness demand of different user.If user does not set target humidity, comfortable humidity is maintained in order to make the humidity of indoor environment better, improve the comfortableness of user's using air-condition device, then target humidity now can be the preset comfort humidity corresponding with current indoor environment temperature, namely air-conditioner will obtain the preset comfort humidity corresponding with current indoor environment temperature, and using this preset comfort humidity as target humidity.
In the present embodiment, will the mapping relations of current indoor environment temperature T1 and preset comfort humidity Φ s be pre-set, as shown in table 1:
The mapping relations of table 1. current indoor environment temperature and preset comfort humidity
As shown in Table 1, in advance current indoor environment temperature T1 is divided into 9 temperature ranges, the preset comfort humidity Φ s that each temperature range is corresponding different, along with current indoor environment temperature T1 raises, preset comfort humidity Φ s reduces gradually.When current indoor environment temperature T1 is less than 13 DEG C, preset comfort humidity Φ s is 70%; When current indoor environment temperature T1 is more than or equal to 27 DEG C, preset comfort humidity Φ s is 30%.Such as, when the current indoor environment temperature T1 obtained is 16 DEG C, be positioned at the temperature range of 15 DEG C≤T1 < 17 DEG C, then obtaining corresponding preset comfort humidity Φ s is 60%, controls the humidity that air-conditioner operates in 60%.Be understandable that, the value of each parameter in above-mentioned table 1 can be arranged as the case may be and flexibly, does not limit the present invention.
It should be noted that, in table 1, the data of preset comfort humidity can according to after acquisition current indoor environment temperature T1, computing formula by between current indoor environment temperature T1 and preset comfort humidity Φ s: Φ s=a × T1+b, calculate preset comfort humidity Φ s, wherein, a, b are constant coefficient, such as, and Φ s=1-0.025 × T1.
In the present embodiment, air-conditioner comprises and is installed on temperature sensor on indoor set and humidity sensor, calls acquisition module 100 and detects current indoor environment temperature by temperature sensor, and detect current indoor ambient humidity by humidity sensor.Certainly, current indoor environment temperature also detects by temperature collect module preset on indoor set, and current indoor ambient humidity also detects by humidity collection module preset on indoor set.
Water capacity acquisition module 200, for obtaining current indoor water capacity according to described current indoor environment temperature and described current indoor ambient humidity;
Current indoor water capacity can by water capacity acquisition module 200 according to the mapping relations of current indoor environment temperature and current indoor ambient humidity by acquisition of tabling look-up, in the present embodiment, by pre-setting the mapping relations between current indoor environment temperature, current indoor ambient humidity and current indoor water capacity, as shown in table 2.Wherein, T1, T2, T3 ... Tn represents the different temperatures value of current indoor environment temperature, Φ 1, Φ 2, Φ 3... Φ n represent the DIFFERENT WET angle value of current indoor ambient humidity, d11, d12, d13 ... dnn represents the different moisture content values of current indoor water capacity, be understandable that, the value of n and the value of parameters can be arranged as the case may be and flexibly, do not limit the present invention.
Mapping relations between table 2. current indoor environment temperature, current indoor ambient humidity and current indoor water capacity
As shown in Table 2, suppose that the front indoor environment temperature detected is T1, the current indoor ambient humidity detected is Φ 3, then can obtain corresponding current indoor water capacity by question blank 2 is d31.Therefore, current indoor water capacity can be determined by current indoor environment temperature and current indoor ambient humidity.
First detection module 300, for when described current indoor water capacity is less than or equal to target moisture content, detects the indoor heat exchanger coil temperature of described air-conditioner;
Above-mentioned obtain current indoor water capacity after, current indoor water capacity and target moisture content are compared.This target moisture content is the water capacity corresponding with target temperature and target humidity, and inquiring about above-mentioned table 2 according to target temperature and target humidity can know target moisture content.This target humidity is the indoor environment humidity that target temperature is corresponding.Judge that air-conditioner needs to carry out refrigerated dehumidification or needs and carries out freezing and do not dehumidify, to prevent indoor environment humidity too low or too high according to the magnitude relationship between current indoor water capacity and target moisture content.In the present embodiment, air-conditioner also comprises indoor heat exchanger coil temperature detection module, if current indoor water capacity is less than or equal to target moisture content, then first detection module 300 detects the indoor heat exchanger coil temperature of air-conditioner by indoor heat exchanger coil temperature detection module.
First judge module 400, for judging whether described indoor heat exchanger coil temperature is less than or equal to the dew-point temperature of present air;
Above-mentioned obtain indoor heat exchanger coil temperature after, call the first judge module 400 and the dew-point temperature of indoor heat exchanger coil temperature and present air compared, the dew-point temperature of this present air is by acquisition of tabling look-up.In the present embodiment, by pre-set current indoor environment temperature, current indoor ambient humidity and present air dew-point temperature between mapping relations, as shown in table 3.Wherein, T1, T2, T3 ... Tn represents the different temperatures value of current indoor environment temperature, and Φ 1, Φ 2, Φ 3... Φ n represent the DIFFERENT WET angle value of current indoor ambient humidity, T
l11, T
l12, T
l13t
lnnrepresent the different dew point temperature value of the dew-point temperature of present air, be understandable that, the value of n and the value of parameters can be arranged as the case may be and flexibly, do not limit the present invention.
Mapping relations between the dew-point temperature of table 3. current indoor environment temperature, current indoor ambient humidity and present air
As shown in Table 3, suppose that the front indoor environment temperature detected is T3, the current indoor ambient humidity detected is Φ 1, then the dew-point temperature that can be obtained the present air of correspondence by question blank 3 is T
l13.Therefore, the dew-point temperature of present air can be determined by current indoor environment temperature and current indoor ambient humidity.
First processing module 500, if be less than or equal to the dew-point temperature of present air for described indoor heat exchanger coil temperature, then regulate the operating air velocity of the indoor fan of described air-conditioner and the running frequency of compressor, and continued to obtain current indoor environment temperature and current indoor ambient humidity by acquisition module; Otherwise, directly continued to obtain current indoor environment temperature and current indoor ambient humidity by acquisition module.
If indoor heat exchanger coil temperature is less than or equal to the dew-point temperature of present air, air-conditioner is in refrigerated dehumidification state, now because current indoor water capacity is less than or equal to target moisture content, and do not dehumidify to control air-conditioner, make indoor environment humidity reach target humidity, then regulate the operating air velocity of the indoor fan of air-conditioner and the running frequency of compressor by the first processing module 500.
Further, in one embodiment, the first processing module 500 also for, what control described indoor fan operates in preset wind speed, and every the second Preset Time, the frequency of current for described compressor operation is reduced the first predeterminated frequency, until reach predetermined frequency.
Do not dehumidify to control air-conditioner, the first processing module 500 control room inner blower operate in preset wind speed.If above-mentioned user has set the wind speed that indoor fan runs, then this preset wind speed has been the wind speed that user sets; If user does not set the wind speed that indoor fan runs, then this preset wind speed is the wind speed of acquiescence, and acquiescence wind speed now can be 100%.Meanwhile, the frequency of current for the compressor of air-conditioner operation, every the second Preset Time, is reduced the first predeterminated frequency by the first processing module 500, until reach predetermined frequency, to improve indoor heat exchanger coil temperature.This second Preset Time is to enable compressor stable operation, 5 minutes can be set to, this first predeterminated frequency can be set to 0.8 times of the frequency of current operation, this predetermined frequency can be set to minimum frequency values, such as 10Hz, be understandable that, the second Preset Time, the first predeterminated frequency and predetermined frequency also can be arranged as the case may be and flexibly, do not limit the present invention.Thus prevent air-conditioner to be in refrigerated dehumidification state always, cause air-conditioner indoor environment in process of refrigerastion drier.
After the running frequency of compressor reaches predetermined frequency, continued to obtain current indoor environment temperature and current indoor ambient humidity by acquisition module 100, and call water capacity acquisition module 200, first detection module 300, first judge module 400 and the first processing module 500 and perform corresponding control, to make indoor environment humidity reach target humidity, until air-conditioner power-off quits work.
Further, in another embodiment, the first processing module 500 also for, the operating air velocity of described indoor fan is increased by second and presets wind speed, and every the 3rd Preset Time, the frequency of current for described compressor operation is reduced the second predeterminated frequency, until reach predetermined frequency.
Do not dehumidify to control air-conditioner, then calling the first processing module 500 increases by the second default wind speed by the operating air velocity of indoor fan.This second default wind speed can be set to 10%, also can arrange as the case may be and flexibly.Meanwhile, every the 3rd Preset Time, the frequency of current for the compressor of air-conditioner operation is reduced the second predeterminated frequency by the first processing module 500, until reach predetermined frequency, to improve indoor heat exchanger coil temperature.3rd Preset Time is to enable compressor stable operation, 5 minutes can be set to, this second predeterminated frequency can be set to 0.8 times of the frequency of current operation, this predetermined frequency can be set to minimum frequency values, such as 10Hz, be understandable that, the 3rd Preset Time, the second predeterminated frequency and predetermined frequency also can be arranged as the case may be and flexibly, do not limit the present invention.Thus prevent air-conditioner to be in refrigerated dehumidification state always, cause air-conditioner indoor environment in process of refrigerastion drier.
After the running frequency of compressor reaches predetermined frequency, continued to obtain current indoor environment temperature and current indoor ambient humidity by acquisition module 100, and call water capacity acquisition module 200, first detection module 300, first judge module 400 and the first processing module 500 and perform corresponding control, to make indoor environment humidity reach target humidity, until air-conditioner power-off quits work.
If indoor heat exchanger coil temperature is greater than the dew-point temperature of present air, now air-conditioner is in refrigeration not except wet condition, then the first processing module 500 does not need the operating air velocity of conditioning chamber inner blower and the running frequency of compressor, directly continued to obtain current indoor environment temperature and current indoor ambient humidity by acquisition module 100, and call water capacity acquisition module 200, first detection module 300, first judge module 400 and the first processing module 500 and perform corresponding control, to make indoor environment humidity reach target humidity, until air-conditioner power-off quits work.
The embodiment of the present invention when air-conditioner enters refrigeration mode, according to detecting the current indoor environment temperature that obtains and current indoor ambient humidity determination current indoor water capacity.If current indoor water capacity is less than or equal to target moisture content, then judge whether the indoor heat exchanger coil temperature detected is less than or equal to the dew-point temperature of present air.If so, the operating air velocity of indoor fan and the running frequency of compressor of described air-conditioner is then regulated.Make air-conditioner comparing by current indoor water capacity and target moisture content, judge whether that needs dehumidify, thus regulate the operating air velocity of indoor fan and the running frequency of compressor of air-conditioner, achieve air-conditioner in process of refrigerastion, maintain indoor environment humidity at target humidity, improve the comfortableness of user's using air-condition device.In addition, air-conditioner does not need to increase the parts such as humidification apparatus, reduces the manufacturing cost of air-conditioner.
Further, as shown in Figure 4, based on above-described embodiment, in this embodiment, the refrigeration control device of air-conditioner also comprises:
Second detection module 600, for when described current indoor water capacity is greater than target moisture content, detects the indoor heat exchanger coil temperature of described air-conditioner;
Second judge module 700, for judging whether described indoor heat exchanger coil temperature is greater than the dew-point temperature of present air;
Second processing module 800, if be greater than the dew-point temperature of present air for described indoor heat exchanger coil temperature, then the wind speed of current for described indoor fan operation is reduced by first and preset wind speed, maintain the first Preset Time, and continued to obtain current indoor environment temperature and current indoor ambient humidity by acquisition module; Otherwise, directly continued to obtain current indoor environment temperature and current indoor ambient humidity by acquisition module.
Above-mentioned obtain current indoor water capacity after, current indoor water capacity and target moisture content are compared, this target moisture content is consistent with the above-mentioned target moisture content mentioned.If current indoor water capacity is greater than target moisture content, then detected the indoor heat exchanger coil temperature of air-conditioner by the second detection module 600 by indoor heat exchanger coil temperature detection module, and compared by the dew-point temperature of the second judge module 700 by indoor heat exchanger coil temperature and present air.The dew-point temperature of present air obtains by above-mentioned question blank 3.
If indoor heat exchanger coil temperature is greater than the dew-point temperature of present air, air-conditioner is in refrigeration not except wet condition, now because current indoor water capacity is greater than target moisture content, and dehumidify to control air-conditioner, make indoor environment humidity reach target humidity, then the wind speed of current for the indoor fan of air-conditioner operation is reduced the first default wind speed by the second processing module 800.This first default wind speed can be set to 10%, also can arrange as the case may be and flexibly.Thus prevent air-conditioner to be in refrigeration not except wet condition always, cause air-conditioner indoor environment in process of refrigerastion more vexed wet.
Indoor fan runs according to the wind speed after adjustment, through the first Preset Time, run to make indoor fan reach stable after, continued to obtain current indoor environment temperature and current indoor ambient humidity by acquisition module 100, and call water capacity acquisition module 200, second detection module 600, second judge module 700 and the second processing module 800 performs corresponding control, to make indoor environment humidity reach target humidity, until air-conditioner power-off quits work.This first Preset Time can be set to 5 minutes, also can arrange as the case may be and flexibly.
If indoor heat exchanger coil temperature is less than or equal to the dew-point temperature of present air, now air-conditioner is in refrigerated dehumidification state, then the second processing module 800 does not need the operating air velocity of conditioning chamber inner blower, directly continued to obtain current indoor environment temperature and current indoor ambient humidity by acquisition module 100, and call water capacity acquisition module 200, second detection module 600, second judge module 700 and the second processing module 800 performs corresponding control, to make indoor environment humidity reach target humidity, until air-conditioner power-off quits work.
Accordingly, as shown in Figure 5, a kind of air-conditioner one embodiment realizing refrigeration control of the present invention is shown.This air-conditioner can comprise indoor set 1 and off-premises station 2, can be provided with indoor heat exchanger and indoor fan in this indoor set 1; Compressor assembly, cross valve, outdoor heat exchanger and throttle part etc. can be provided with in off-premises station 2, wherein be connected by pipeline between compressor assembly, cross valve, indoor heat exchanger, outdoor heat exchanger, throttle part, form refrigerating/heating closed circuit.This indoor set 1 is provided with temperature sensor 101, humidity sensor 102 and indoor heat exchanger coil temperature detection module 103, is respectively used to gather current indoor environment temperature T1, current indoor ambient humidity Φ 1 and indoor heat exchanger coil temperature T2.In addition, this air-conditioner also comprises a refrigeration control device 3, and this refrigeration control device 3 for obtaining current indoor water capacity d1 according to current indoor environment temperature T1 and current indoor ambient humidity Φ 1, and obtains target moisture content ds.Then according to the operational mode of above-mentioned refrigeration control method determination air-conditioner, and corresponding controling parameters under exporting this operational mode, with the running frequency of the operating air velocity and compressor that regulate the indoor fan of air-conditioner, reach air-conditioner and maintain the object of indoor environment humidity at target humidity in the process of refrigeration.The structure and working principle of this refrigeration control device can refer to described in preceding embodiment.
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 (9)
1. a refrigeration control method for air-conditioner, is characterized in that, the refrigeration control method of described air-conditioner comprises the following steps:
S1, when air-conditioner enters refrigeration mode, obtain current indoor environment temperature and current indoor ambient humidity;
S2, obtain current indoor water capacity according to described current indoor environment temperature and described current indoor ambient humidity;
S3, when described current indoor water capacity is less than or equal to target moisture content, detect the indoor heat exchanger coil temperature of described air-conditioner;
S4, judge whether described indoor heat exchanger coil temperature is less than or equal to the dew-point temperature of present air;
S5, if so, then regulate the operating air velocity of the indoor fan of described air-conditioner and the running frequency of compressor, and proceed to step S1;
S6, if not, then proceed to step S1.
2. the refrigeration control method of air-conditioner as claimed in claim 1, is characterized in that, comprise after described step S2:
When described current indoor water capacity is greater than target moisture content, detect the indoor heat exchanger coil temperature of described air-conditioner;
Judge whether described indoor heat exchanger coil temperature is greater than the dew-point temperature of present air;
If so, then the wind speed of current for described indoor fan operation is reduced by first and preset wind speed, maintain the first Preset Time, and proceed to step S1;
If not, then step S1 is proceeded to.
3. the refrigeration control method of air-conditioner as claimed in claim 1, it is characterized in that, described step S5 comprises:
What control described indoor fan operates in preset wind speed, and every the second Preset Time, the frequency of current for described compressor operation is reduced the first predeterminated frequency, until reach predetermined frequency, and proceeds to step S1.
4. the refrigeration control method of air-conditioner as claimed in claim 3, it is characterized in that, described step S5 comprises:
The operating air velocity of described indoor fan is increased by second and presets wind speed, and every the 3rd Preset Time, the frequency of current for described compressor operation is reduced the second predeterminated frequency, until reach predetermined frequency, and proceeds to step S1.
5. a refrigeration control device for air-conditioner, is characterized in that, the refrigeration control device of described air-conditioner comprises:
Acquisition module, for obtaining current indoor environment temperature and current indoor ambient humidity when air-conditioner enters refrigeration mode;
Water capacity acquisition module, for obtaining current indoor water capacity according to described current indoor environment temperature and described current indoor ambient humidity;
First detection module, for when described current indoor water capacity is less than or equal to target moisture content, detects the indoor heat exchanger coil temperature of described air-conditioner;
First judge module, for judging whether described indoor heat exchanger coil temperature is less than or equal to the dew-point temperature of present air;
First processing module, if be less than or equal to the dew-point temperature of present air for described indoor heat exchanger coil temperature, then regulate the operating air velocity of the indoor fan of described air-conditioner and the running frequency of compressor, and continued to obtain current indoor environment temperature and current indoor ambient humidity by acquisition module; Otherwise, directly continued to obtain current indoor environment temperature and current indoor ambient humidity by acquisition module.
6. the refrigeration control device of air-conditioner as claimed in claim 5, it is characterized in that, the refrigeration control device of described air-conditioner also comprises:
Second detection module, for when described current indoor water capacity is greater than target moisture content, detects the indoor heat exchanger coil temperature of described air-conditioner;
Second judge module, for judging whether described indoor heat exchanger coil temperature is greater than the dew-point temperature of present air;
Second processing module, if be greater than the dew-point temperature of present air for described indoor heat exchanger coil temperature, then the wind speed of current for described indoor fan operation is reduced by first and preset wind speed, maintain the first Preset Time, and continued to obtain current indoor environment temperature and current indoor ambient humidity by acquisition module; Otherwise, directly continued to obtain current indoor environment temperature and current indoor ambient humidity by acquisition module.
7. the refrigeration control device of air-conditioner as claimed in claim 5, it is characterized in that, described first processing module also for, what control described indoor fan operates in preset wind speed, and every the second Preset Time, the frequency of current for described compressor operation is reduced the first predeterminated frequency, until reach predetermined frequency, and is continued to obtain current indoor environment temperature and current indoor ambient humidity by acquisition module.
8. the refrigeration control device of air-conditioner as claimed in claim 7, it is characterized in that, described first processing module also for, the operating air velocity of described indoor fan is increased by second and presets wind speed, and every the 3rd Preset Time, the frequency of current for described compressor operation is reduced the second predeterminated frequency, until reach predetermined frequency, and is continued to obtain current indoor environment temperature and current indoor ambient humidity by acquisition module.
9. an air-conditioner, it is characterized in that, the indoor set of described air-conditioner is provided with temperature sensor, humidity sensor and indoor heat exchanger coil temperature detection module, be respectively used to gather current indoor environment temperature, current indoor ambient humidity and indoor heat exchanger coil temperature, described air-conditioner also comprises the refrigeration control device of air-conditioner as described in any one of claim 5-8, described refrigeration control device is used for obtaining current indoor water capacity according to described current indoor environment temperature and described current indoor ambient humidity, and be less than or equal to target moisture content when meeting described current indoor water capacity, and indoor heat exchanger coil temperature is when being less than or equal to the dew-point temperature of present air, regulate the operating air velocity of the indoor fan of described air-conditioner and the running frequency of compressor.
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