CN104501360B - Air-conditioner and its dehumidification control method - Google Patents

Air-conditioner and its dehumidification control method Download PDF

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Publication number
CN104501360B
CN104501360B CN201410789697.5A CN201410789697A CN104501360B CN 104501360 B CN104501360 B CN 104501360B CN 201410789697 A CN201410789697 A CN 201410789697A CN 104501360 B CN104501360 B CN 104501360B
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temperature
heat exchanger
air
conditioner
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CN104501360A (en
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廖清高
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GD Midea Air Conditioning Equipment Co Ltd
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Guangdong Midea Refrigeration Equipment Co Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/20Humidity
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/89Arrangement or mounting of control or safety devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F2003/144Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only

Abstract

The present invention discloses a kind of dehumidification control method of air-conditioner, when air-conditioner is dehumidified, by obtaining indoor environment temperature T1 and indoor heat exchanger pipe temperature T2, and calculates the temperature difference △ T between indoor environment temperature T1 and indoor target temperature Ts1And instantaneous temperature difference △ T between dew-point temperature Td and indoor heat exchanger pipe temperature T22, then according to the temperature difference △ T1With temperature difference △ T2Air-conditioner is controlled.And, during the Dehumidification controlling of air-conditioner, also by monitoring whether indoor environment temperature T1 and indoor heat exchanger pipe temperature T2 change, if changing, air-conditioner is controlled, so that indoor environment temperature T1 and indoor heat exchanger pipe temperature T2 remain unchanged.The invention also discloses a kind of air-conditioner.The present invention need not be the control of achievable indoor humidity by humidity sensor, and be also possible that indoor humidity accurately attains target humidity.

Description

Air-conditioner and its dehumidification control method
Technical field
The present invention relates to air-conditioner field, more particularly to a kind of air-conditioner and its dehumidification control method.
Background technology
Air-conditioner has become the essential of people's household, when especially outdoor temperature is higher or lower, by air-conditioner Interior can be made to be maintained at comfortable temperature.It is existing although dehumidification function is all a kind of basic function in existing air-conditioner There is the air-conditioner with dehumidification function to be typically all not provided with humidity sensor, so that dehumidifying is excessive or not enough, it is impossible to reach Effect on moisture extraction required for user.And humidity sensor is set in air-conditioner, it is not only relatively costly, and it is unable to reach essence The effect for really dehumidifying.
The content of the invention
It is a primary object of the present invention to provide a kind of air-conditioner and its dehumidification control method, it is intended to improve effect on moisture extraction.
In order to achieve the above object, the invention provides a kind of dehumidification control method of air-conditioner, comprise the following steps:
When detecting dehumidifying instruction, the indoor heat exchanger Guan Wen of indoor environment temperature T1 and air-conditioner is periodically obtained T2;
Obtain instantaneous dew-point temperature Td corresponding with the indoor environment temperature T1 under target humidity;
Calculate the temperature difference △ T of the indoor environment temperature T1 and indoor target temperature Ts1, and instantaneous dew-point temperature Td and room Temperature difference △ T between the pipe temperature T2 of interior heat exchanger2
According to the temperature difference △ T1And the temperature difference △ T2, air-conditioner is controlled, so that the temperature difference △ T1Positioned at pre- If temperature range in, and temperature difference △ T2It is default initial temperature differences threshold value a;
As the temperature difference △ T1In default temperature range, and the temperature difference △ T2After for default temperature difference threshold, sentence Whether the indoor heat exchanger pipe temperature T2 that breaks is changed and variable quantity is located at outside default first domain of walker;
When the indoor heat exchanger pipe temperature T2 changes and variable quantity is located at outside default first domain of walker, according to The change of the indoor heat exchanger pipe temperature T2, controls the operation of air-conditioner, so that the variable quantity of the indoor heat exchanger pipe temperature T2 Maintain in default first domain of walker.
Preferably, it is described when indoor heat exchanger pipe temperature T2 is changed and variable quantity is located at outside default first domain of walker When, according to the change of the indoor heat exchanger pipe temperature T2, controlling the operation of air-conditioner includes:
When the indoor heat exchanger pipe temperature T2 declines, the temperature difference △ T are controlled2=a-n*b;
When the indoor heat exchanger pipe temperature T2 rises, the temperature difference △ T are controlled2=a+n*b;Wherein a and b is default With reference to constant, n is regulation number of times.
Preferably, it is described when indoor heat exchanger pipe temperature T2 is changed and variable quantity is located at outside default first domain of walker When, according to the change of the indoor heat exchanger pipe temperature T2, also include after the operation for controlling air-conditioner:
Judge whether the indoor environment temperature T1 changes and whether variable quantity is located at default second domain of walker Outward;
When the indoor environment temperature T1 changes and variable quantity is located at outside default second domain of walker, to described Air-conditioner is controlled, so that the variable quantity of the indoor environment temperature T1 is maintained in default second domain of walker, and institute State temperature difference △ T2Maintain current state.
Preferably, it is described when detecting dehumidifying instruction, obtain the indoor heat exchanger pipe of indoor environment temperature T1 and air-conditioner Also include before warm T2:
The mode selection command of user is received, the corresponding target humidity of the selected pattern of user and indoor heat exchanger is obtained The control parameter of Guan Wen.
Additionally, to achieve the above object, present invention also offers a kind of air-conditioner, the air-conditioner includes processor, sets Put the first temperature sensor at machine return air inlet indoors, the second temperature sensor being disposed in the interior on heat exchanger, the place Reason device includes:
Temperature acquisition module, for detecting during dehumidifying instruction, periodically obtains what the first temperature sensor was detected The indoor heat exchanger pipe temperature T2 of the air-conditioner that indoor environment temperature T1 and second temperature sensor are detected;
Dew-point temperature acquisition module, for obtaining instantaneous dew point corresponding with the indoor environment temperature T1 under target humidity Temperature Td;
Differential thermal calculation module, the temperature difference △ for calculating indoor environment temperature T1 and the indoor target temperature Ts of user's setting T1, and the instantaneously temperature difference △ T of dew-point temperature Td and indoor heat exchanger pipe temperature T22
Control module, for according to the temperature difference △ T1And the temperature difference △ T2, air-conditioner is controlled, so that described Temperature difference △ T1In default temperature range, and the temperature difference △ T2It is default initial temperature differences threshold value a;When the temperature difference △T1In default temperature range, and the temperature difference △ T2It is default temperature difference threshold, and after continuing a preset time, sentences Whether the indoor heat exchanger pipe temperature T2 that breaks is changed and variable quantity is located at outside default first domain of walker;
When the indoor heat exchanger pipe temperature T2 changes and variable quantity is located at outside default first domain of walker, according to The change of the indoor heat exchanger pipe temperature T2, controls the operation of air-conditioner, so that the variable quantity of the indoor heat exchanger pipe temperature T2 Maintain in default first domain of walker.
Preferably, the control module is used for:
When the indoor heat exchanger pipe temperature T2 declines, the temperature difference △ T are controlled2=a-n*b;
When the indoor heat exchanger pipe temperature T2 rises, the temperature difference △ T are controlled2=a+n*b;Wherein a and b is default With reference to constant, n is regulation number of times.
Preferably, the control module is additionally operable to:
When indoor heat exchanger pipe temperature T2 changes and variable quantity is located at outside default first domain of walker, according to described The change of indoor heat exchanger pipe temperature T2, controls after the operation of air-conditioner, also judges whether the indoor environment temperature T1 occurs Change and whether variable quantity is located at outside default second domain of walker;
When the indoor environment temperature T1 changes and variable quantity is located at outside default second domain of walker, to described Air-conditioner is controlled, so that the variable quantity of the indoor environment temperature T1 is maintained in default second domain of walker, and institute State temperature difference △ T2Maintain current state.
Preferably, the processor also includes:
Mode selection module, the mode selection command for receiving user obtains the corresponding mesh of the selected pattern of user The control parameter of mark humidity and indoor heat exchanger Guan Wen.
The embodiment of the present invention when air-conditioner is dehumidified, by obtaining indoor environment temperature T1 and indoor heat exchanger Guan Wen T2, and calculate the temperature difference △ T between indoor environment temperature T1 and indoor target temperature Ts1And instantaneous dew-point temperature Td and interior Temperature difference △ T between Tube Sheet of Heat Exchanger temperature T22, then according to the temperature difference △ T1With temperature difference △ T2Air-conditioner is controlled.And And, during the Dehumidification controlling of air-conditioner, also by monitoring whether indoor environment temperature T1 and indoor heat exchanger pipe temperature T2 send out Changing, if changing, is controlled to air-conditioner, so that indoor environment temperature T1 and indoor heat exchanger pipe temperature T2 is maintained It is constant.Therefore, the embodiment of the present invention need not be the control of achievable indoor humidity by humidity sensor, but also can make Obtain indoor humidity and accurately attain target humidity.
In addition, the embodiment of the present invention be based on indoor environment temperature T1, indoor heat exchanger pipe temperature T2, indoor target temperature Ts, Instantaneous dew-point temperature Td and refer to constant a, b, can automatically adjust the running frequency of compressor, the delivery temperature of compressor and Rotation speed of fan etc., so as to realize the relative humidity that dehumidification process can be effectively in control room, and then improves air conditioning comfortableness.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the embodiment of dehumidification control method one of air-conditioner of the present invention;
Fig. 2 is the schematic flow sheet of another embodiment of dehumidification control method of air-conditioner of the present invention;
Fig. 3 is the structural representation of the embodiment of air-conditioner of the present invention;
Fig. 4 is the high-level schematic functional block diagram of control device first embodiment in air-conditioner of the present invention;
Fig. 5 is the high-level schematic functional block diagram of control device second embodiment in air-conditioner of the present invention.
In order that technical scheme is clearer, clear, it is described in further detail below in conjunction with accompanying drawing.
Specific 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 proposes a kind of air-conditioner, and the air-conditioner may include a processor, at least two groups temperature sensors.Wherein One group of temperature sensor is disposed in the interior at machine return air inlet, to detect the temperature T1 of interior;Another group of temperature sensor is arranged on On indoor set heat exchanger pipeline, to detect the pipe temperature T2 of indoor heat exchanger.Then processor receives temperature T1, temperature T2, according to The Dehumidification controlling scheme that processor pre-sets, is dehumidified accordingly to air-conditioner.The present invention not only eliminates humidity sensor The setting of device, and because the pipe temperature T2 that the present invention considers indoor temperature T1 and indoor heat exchanger carries out Dehumidification controlling, from And realize effectively dehumidifying.
Above-mentioned processor will preset various dehumidification operating modes, and every kind of dehumidification operating mode is provided with corresponding target humidity RH, control parameter a and b.The dehumidification operating mode is available for user to select.When user selects corresponding dehumidification operating mode, place Reason device then obtains the corresponding control parameter of the selected dehumidification operating mode of user, and according to default Dehumidification controlling scheme, it is right Air-conditioner carries out corresponding Dehumidification controlling.The present embodiment by providing the selection of user's dehumidification operating mode so that user Can allow that air-conditioner controls in suitable scope indoor humidity with the demand of oneself, meet removing for different user Wet demand.
As shown in figure 1, showing the Dehumidification controlling flow of the processor.The dehumidification control method of the air-conditioner may include with Lower step:
Step S110, when detecting dehumidifying instruction, the interior for periodically obtaining indoor environment temperature T1 and air-conditioner is changed Hot device pipe temperature T2;
In the present embodiment, temperature sensor is respectively provided with the return air inlet of machine and on indoor heat exchanger coil pipe indoors, with right Indoor environment temperature T1 and indoor heat exchanger pipe temperature T2 should be detected.When detecting dehumidifying instruction, then the TEMP can be obtained Indoor environment temperature T1 and indoor heat exchanger pipe temperature T2 detected by device.
Instantaneous dew-point temperature Td corresponding with the indoor environment temperature T1 under step S120, acquisition target humidity;
Instantaneous dew-point temperature Td corresponding with indoor environment temperature T1 is obtained, concretely:In one example, in air-conditioner Pre-set corresponding dew-point temperature and calculate rule, then obtain the parameter required for dew-point temperature calculates rule, such as it is indoor Environment temperature, finally further according to acquired parameter, rule is calculated according to dew-point temperature, is calculated and is obtained under target humidity, with room The corresponding instantaneous dew-point temperature Td of interior environment temperature T1.In another example, can prestore a dew-point hygrometer in air-conditioner, should Dew-point hygrometer have recorded the mapping relations between target humidity, indoor environment temperature and dew-point temperature, therefore indoor obtaining During environment temperature T1, further according to the dew-point hygrometer that this prestores, table look-up under acquisition target humidity, it is corresponding with indoor environment temperature T1 Instantaneous dew-point temperature Td.
In the present embodiment, if the non-selected target humidity of user, it is wet that the target humidity is defaulted as that air-conditioner pre-sets Degree.
Step S130, the temperature difference △ T for calculating the indoor environment temperature T1 and indoor target temperature Ts1, and instantaneous dew point Temperature difference △ T between temperature Td and the pipe temperature T2 of indoor heat exchanger2
Step S140, according to the temperature difference △ T1And the temperature difference △ T2, air-conditioner is controlled, so that the temperature difference △T1In default temperature range, and the temperature difference △ T2It is default initial temperature differences threshold value a;
Calculating temperature difference △ T1=T1-Ts, and calculating temperature difference △ T2=Td-T2.In the present embodiment, the default temperature range It is [- 0.2 ,+0.2], even temperature difference △ T1In the default scope, then air-conditioner is controlled to maintain current running status; As indoor target temperature Tss and temperature difference △ T of the indoor environment temperature T1 more than user's setting1When outside the default scope, then Cooling control is carried out to air-conditioner;As indoor target temperature Tss and temperature difference △ T of the indoor environment temperature T1 less than user's setting1Position When outside the default scope, then intensification control is carried out to air-conditioner.Step S110- step S140 are repeated, by repeatedly Adjustment, until control temperature difference △ T1In default temperature range.Because indoor environment temperature T1 changes, then target is wet Under degree, also there is corresponding change in the corresponding instantaneous dew-point temperatures of indoor environment temperature T1, therefore, instantaneous dew-point temperature Td with The temperature difference △ T of indoor heat exchanger pipe temperature T22Default initial temperature differences threshold value a is will be maintained at, initial temperature differences threshold value a will be for not Different values are set under same air-conditioner, different humiture environment, its specific span can be 1~12 DEG C.
Step S150, as the temperature difference △ T1In default temperature range, and the temperature difference △ T2For default initial After temperature difference threshold, judge whether the indoor heat exchanger pipe temperature T2 changes and variable quantity is located at default first domain of walker Outward;If so, step S170 is then transferred to, if it is not, being then transferred to step S160;
As the temperature difference △ T1In default temperature range, and the temperature difference △ T2It is default initial temperature differences threshold value Afterwards, represent that air-conditioner enters stable state.After air-conditioner stable operation and preset time, then judge the indoor heat exchanger pipe Whether warm T2 changes, if changing, judges whether the variable quantity of pipe temperature T2 is located at default first domain of walker It is interior.Specially:Indoor Tube Sheet of Heat Exchanger temperature T2 is detected every Preset Time, and whether pipe temperature T2 before and after judgement twice becomes Change, and variable quantity is 0.5.If default first domain of walker is [- 0.5 ,+0.5], then judge the variable quantity default first In domain of walker.If variable quantity is 1, judge the variable quantity outside default first domain of walker.
Step S160, maintenance current operating conditions;
When the indoor heat exchanger pipe temperature T2 does not change, or the variable quantity for changing is located at default first and floats In dynamic scope, then air-conditioner is controlled to be maintained at current operating conditions.
Step S170, the change according to the indoor heat exchanger pipe temperature T2, control the operation of air-conditioner, so that the interior The variable quantity of Tube Sheet of Heat Exchanger temperature T2 is maintained in default first domain of walker.
When the indoor heat exchanger pipe temperature T2 changes, and variable quantity is located at outside default first domain of walker, then root According to the change of indoor heat exchanger pipe temperature T2, the operation of air-conditioner is controlled, such as when indoor heat exchanger pipe temperature T2 rises, increase is indoor Wind speed, or compressor operating frequency is reduced, or reduce system throttles etc., so that the variable quantity of the indoor heat exchanger pipe temperature T2 Maintain in default first domain of walker.
The embodiment of the present invention when air-conditioner is dehumidified, by obtaining indoor environment temperature T1 and indoor heat exchanger Guan Wen T2, and calculate the temperature difference △ T between indoor environment temperature T1 and indoor target temperature Ts1And instantaneous dew-point temperature Td and interior Temperature difference △ T between Tube Sheet of Heat Exchanger temperature T22, then according to the temperature difference △ T1With temperature difference △ T2Air-conditioner is controlled.And And, during the Dehumidification controlling of air-conditioner, also by monitoring whether indoor environment temperature T1 and indoor heat exchanger pipe temperature T2 send out Changing, if changing, is controlled to air-conditioner, so that indoor environment temperature T1 and indoor heat exchanger pipe temperature T2 is maintained It is constant.Therefore, the embodiment of the present invention need not be the control of achievable indoor humidity by humidity sensor, but also can make Obtain indoor humidity and accurately attain target humidity.
Further, above-mentioned steps S170 is specifically included:
When the pipe temperature T2 of indoor heat exchanger declines, the control indoor target temperature Ts and dew-point temperature Td is changed with interior Temperature difference T between the pipe temperature T2 of hot device2For:ΔT2=a-n*b;
When the pipe temperature T2 of indoor heat exchanger rises, the control indoor target temperature Ts and dew-point temperature Td is changed with interior Temperature difference T between the pipe temperature T2 of hot device2For:ΔT2=a+n*b;Wherein, a and b is default reference constant, and n is regulation time Number.
When the pipe temperature T2 of indoor heat exchanger changes, judge that pipe temperature T2 declines or rises according to variable quantity. So that the pipe temperature T2 of indoor heat exchanger declines as an example, the regulation process that the pipe temperature T2 of indoor heat exchanger rises is implemented with reference to it.Work as room When the pipe temperature T2 of interior heat exchanger declines, then to make temperature difference T2It is a-b, that is, the pipe temperature T2 for causing indoor heat exchanger is Td-a+b, Therefore air-conditioner is controlled according to the pipe temperature T2 of the indoor heat exchanger.After first secondary control, if the pipe of indoor heat exchanger Warm T2 still declines, then to make temperature difference T2It is a-2*b, that is, causes the pipe temperature T2 of indoor heat exchanger for Td-a+2*b, therefore root Air-conditioner is controlled according to the pipe temperature T2 of the indoor heat exchanger.The like, until the change of the indoor heat exchanger pipe temperature T2 Change amount is maintained in default first domain of walker.When by after control, the variable quantity of the indoor heat exchanger pipe temperature T2 is maintained When in default first domain of walker, then n is reset.
The embodiment of the present invention is based on indoor environment temperature T1, indoor heat exchanger pipe temperature T2, indoor target temperature Ts, instantaneous dew Put temperature Td and refer to constant a, b, the running frequency of compressor, the delivery temperature of compressor and blower fan can be automatically adjusted and turned Speed etc., so as to realize the relative humidity that dehumidification process can be effectively in control room, and then improves air conditioning comfortableness.
Further, as shown in Fig. 2 also including after above-mentioned steps S170:
Step S180, judge indoor environment temperature T1 whether change and variable quantity be located at default second domain of walker Outward;If so, being then transferred to step S190;If it is not, being then transferred to step S160;
When the change according to the indoor heat exchanger pipe temperature T2, control after the operation of air-conditioner, will determine that indoor environment Whether temperature T1 changes, if changing, judges whether the variable quantity of pipe temperature T2 is located at default second floating model In enclosing.Specially:Whether the indoor environment temperature T1 before and after Preset Time detects indoor environment temperature T1, and judgement twice Change, and variable quantity is 0.5.If default second domain of walker is [- 0.5 ,+0.5], then judge the variable quantity default The second domain of walker in.If variable quantity is 1, judge the variable quantity outside default second domain of walker.
Step S180, air-conditioner is controlled so that the variable quantity of the indoor environment temperature T1 maintain it is default In second domain of walker, and the temperature difference △ T2Maintain current state.
When the indoor heat exchanger T1 does not change, or the variable quantity for changing is located at default second floating model In enclosing, then air-conditioner is controlled to be maintained at current operating conditions.When the indoor environment temperature T1 changes, and variable quantity is located at Outside default second domain of walker, then according to the change of indoor environment temperature T1, the operation of air-conditioner is controlled, so that the interior The variable quantity of environment temperature T1 is maintained in default second domain of walker.Change based on indoor environment temperature T1 is to air-conditioner Control, can use the existing control program of air-conditioner, just repeat no more herein.
In order to be able to the Dehumidification controlling scheme of above-mentioned air-conditioner is better described, below will specifically be solved by 3 examples Release.
Example one
When air-conditioner is started shooting, the indoor target temperature Ts that user sets is 24 DEG C, the selected air-conditioner dehumidifying fortune of user Row mode is M1, and the corresponding target humidities of operational mode M1 are 60%, a=5 DEG C, b=1.The indoor environment of current air-conditioner T1=30 DEG C of temperature, relative humidity is 70%.After air-conditioner start, air-conditioner is first according to T1=30 DEG C and relative humidity 60%, calculate Td=23.9 DEG C of existing dew point temperature.Because current indoor environment temperature T1 is higher than indoor target temperature Ts, because This air-conditioner carries out cool-down dehumidification, i.e. routinely refrigeration mode, to control indoor environment temperature T1 and indoor target temperature Ts's The temperature difference is in default first temperature range, while controlling the temperature difference △ of existing dew point temperature Ts and the pipe temperature T2 of indoor heat exchanger T2=Td-T2 is in the range of default second temperature (such as when the temperature difference is controlled to 5 DEG C, then T2=18.9 DEG C).Due to when interior After environment temperature T1 declines, dew-point temperature Td will follow decline, △ T2, indoor heat exchanger pipe temperature T2 also synchronous adjustments.By After said process is adjusted repeatedly, the temperature difference of indoor environment temperature T1 and indoor target temperature Ts will be controlled in default first temperature In the range of, such as T1=TS=24 DEG C, Td=18.7 DEG C of dew-point temperature now, if ensureing △ T2=Td-T2=5 DEG C, then room T2=13.7 DEG C of the pipe temperature of interior heat exchanger.
As the indoor environment temperature T1 and temperature difference T of the indoor target temperature Ts1It is maintained at default first temperature model In enclosing, and after continuing a preset time, will determine that whether the pipe temperature T2 of indoor heat exchanger changes.When the pipe of indoor heat exchanger When warm T2 keeps constant, control air-conditioner maintains current operating conditions;When the pipe temperature T2 of indoor heat exchanger changes, such as room When the pipe temperature T2 of interior heat exchanger rises, then △ T are controlled2=Td-T2=a+b=6 DEG C, i.e., T2=12.7 DEG C.After a period of time again Above deterministic process is repeated, if the temperature difference △ T of indoor environment temperature T1 and indoor target temperature Ts1In default first temperature model In enclosing, and the pipe temperature T2 of indoor heat exchanger is when still rising, then control △ T2=Td-T2=a+2b=7 DEG C, i.e. T2=11.7 ℃.Above deterministic process is repeated after a period of time, if the temperature difference △ T of indoor environment temperature T1 and indoor target temperature Ts1 In default first temperature range, and the pipe temperature T2 of indoor heat exchanger then controls △ T when still rising2=Td-T2=a+3b= 8 DEG C, i.e., T2=10.7 DEG C.After said process is adjusted repeatedly, by control indoor environment temperature T1 and indoor target temperature Ts Temperature difference △ T1In default first temperature range, the pipe temperature T2 of indoor heat exchanger is controlled to keep constant.
Example two
When air-conditioner is started shooting, the indoor target temperature Ts that user sets is 24 DEG C, the selected air-conditioner dehumidifying fortune of user Row mode is M1, and the corresponding target humidities of operational mode M1 are 60%, a=5 DEG C, b=1.The indoor environment of current air-conditioner T1=30 DEG C of temperature, relative humidity is 70%.After air-conditioner start, air-conditioner is first according to T1=30 DEG C and relative humidity 60%, calculate Td=23.9 DEG C of existing dew point temperature.Because current indoor environment temperature T1 is higher than indoor target temperature Ts, because This air-conditioner carries out cool-down dehumidification, i.e. routinely refrigeration mode, to control indoor environment temperature T1 and indoor target temperature Ts's The temperature difference is in default first temperature range, while controlling the temperature difference △ of existing dew point temperature Ts and the pipe temperature T2 of indoor heat exchanger T2=Td-T2 is in the range of default second temperature (such as when the temperature difference is controlled to 5 DEG C, then T2=18.9 DEG C).Due to when interior After environment temperature T1 declines, dew-point temperature Td will follow decline, △ T2, indoor heat exchanger pipe temperature T2 also synchronous adjustments.By After said process is adjusted repeatedly, the temperature difference of indoor environment temperature T1 and indoor target temperature Ts will be controlled in default first temperature In the range of, while controlling the temperature difference △ T of existing dew point temperature Ts and the pipe temperature T2 of indoor heat exchanger2=Td-T2 is default In two temperature ranges.Such as T1=TS=24 DEG C, Td=18.7 DEG C of dew-point temperature now, if ensureing △ T2=Td-T2=5 DEG C, then T2=13.7 DEG C of the pipe temperature of indoor heat exchanger.
As the indoor environment temperature T1 and temperature difference T of the indoor target temperature Ts1It is maintained at default first temperature model In enclosing, and after continuing a preset time, will determine that whether the pipe temperature T2 of indoor heat exchanger changes.When the pipe of indoor heat exchanger When warm T2 does not change, control air-conditioner maintains current operating conditions;When the pipe temperature T2 of indoor heat exchanger changes, for example When the pipe temperature T2 of indoor heat exchanger declines, then △ T are controlled2=Td-T2=a-b=4 DEG C, i.e., T2=14.7 DEG C.After a period of time Above deterministic process is repeated, if the temperature difference △ T of indoor environment temperature T1 and indoor target temperature Ts1In default first temperature In the range of, and the pipe temperature T2 of indoor heat exchanger then controls △ T when still declining2=Td-T2=a-2b=3 DEG C, i.e. T2=15.7 ℃.Above deterministic process is repeated after a period of time, if the temperature difference △ T of indoor environment temperature T1 and indoor target temperature Ts1 In default first temperature range, and the pipe temperature T2 of indoor heat exchanger then controls △ T when still declining2=Td-T2=a-3b= 2 DEG C, i.e., T2=16.7 DEG C.After said process is adjusted repeatedly, by control indoor environment temperature T1 and indoor target temperature Ts Temperature difference △ T1In default first temperature range, the pipe temperature T2 of indoor heat exchanger is controlled to keep constant.
Example three
When air-conditioner is started shooting, the indoor target temperature Ts that user sets is 24 DEG C, the selected air-conditioner dehumidifying fortune of user Row mode is M1, and the corresponding target humidities of operational mode M1 are 60%, a=5 DEG C, b=1.The indoor environment of current air-conditioner T1=30 DEG C of temperature, relative humidity is 70%.After air-conditioner start, air-conditioner is first according to T1=30 DEG C and relative humidity 60%, calculate Td=23.9 DEG C of existing dew point temperature.Because current indoor environment temperature T1 is higher than indoor target temperature Ts, because This air-conditioner carries out cool-down dehumidification, i.e. routinely refrigeration mode, to control indoor environment temperature T1 and indoor target temperature Ts's The temperature difference is in default first temperature range, while controlling the temperature difference △ of existing dew point temperature Ts and the pipe temperature T2 of indoor heat exchanger T2=Td-T2 is in the range of default second temperature (such as when the temperature difference is controlled to 5 DEG C, then T2=18.9 DEG C).Due to when interior After environment temperature T1 declines, dew-point temperature Td will follow decline, △ T2, indoor heat exchanger pipe temperature T2 also synchronous adjustments.By After said process is adjusted repeatedly, the temperature difference of indoor environment temperature T1 and indoor target temperature Ts will be controlled in default first temperature In the range of, while controlling the temperature difference △ T of existing dew point temperature Ts and the pipe temperature T2 of indoor heat exchanger2=Td-T2 is default In two temperature ranges.Such as T1=26 DEG C, Td=20.4 DEG C of dew-point temperature now, if ensureing △ T2=Td-T2=5 DEG C, then T2=15.4 DEG C of the pipe temperature of indoor heat exchanger.
As the indoor environment temperature T1 and temperature difference T of the indoor target temperature Ts1It is maintained at default first temperature model In enclosing, and after continuing a preset time, will determine that whether the pipe temperature T2 of indoor heat exchanger changes.When the pipe of indoor heat exchanger When warm T2 does not change, control air-conditioner maintains current operating conditions;When the pipe temperature T2 of indoor heat exchanger changes, for example When the pipe temperature T2 of indoor heat exchanger rises, then △ T are controlled2=Td-T2=a+b=6 DEG C, i.e., T2=14.4 DEG C.After a period of time Above deterministic process is repeated, if indoor environment temperature T1 changes with the pipe temperature T2 of indoor heat exchanger, air-conditioning is controlled Device maintains △ T2On the basis of=6 DEG C, running frequency, air quantity, delivery temperature to air-conditioner etc. are adjusted, and make indoor ring Border temperature T1 reaches stable state again.After indoor environment temperature reaches stable state, above deterministic process is repeated, if room The pipe temperature T2 of interior heat exchanger rises, then control △ T2=Td-T2=a+2b=7 DEG C, i.e., T2=13.4 DEG C.Weighed again after a period of time Multiple above deterministic process, if indoor environment temperature T1 changes with the pipe temperature T2 of indoor heat exchanger, control air-conditioner dimension Hold in △ T2On the basis of=7 DEG C, running frequency, air quantity, delivery temperature to air-conditioner etc. are adjusted, and make indoor environment temperature Degree T1 reaches stable state again.After said process is adjusted repeatedly, by control indoor environment temperature T1 and indoor objects temperature Spend the temperature difference △ T of Ts1In default first temperature range, the pipe temperature T2 of indoor heat exchanger is controlled to keep constant.
Accordingly, as shown in figure 3, showing a kind of implementation of the air-conditioner being controlled to humidity based on temperature of the present invention Example.The air-conditioner includes compressor assembly 1, four-way valve 2, indoor heat exchanger 3, outdoor heat exchanger 4 and throttle part 5, wherein Compressor assembly 1 may include compressor 1a and fluid reservoir 1b, four-way valve 2 include four ports (port 2a, port 2b, port 2c, Port 2d).Connected by pipeline between compressor assembly, four-way valve 2, indoor heat exchanger 3, outdoor heat exchanger 4, throttle part 5, Form refrigerating/heating circulation loop.The first temperature sensor 31 is provided with the return air inlet of the indoor heat exchanger 3, for gathering room Interior environment temperature T1;The coil pipe of indoor heat exchanger 3 is provided with second temperature sensor 32, the Guan Wen for gathering indoor heat exchanger T2.In addition, the air-conditioner also includes a control device 6, i.e., above-mentioned control device will be according to the first temperature sensor 31 and second The temperature that temperature sensor 32 is detected, controls the operation of air-conditioner, realizes the accurate adjustment of humidity.
As shown in figure 4, showing the control device first embodiment of air-conditioner of the present invention.Above-mentioned control device 6 may include:
Temperature acquisition module 61, for detecting during dehumidifying instruction, periodically obtains the first temperature sensor 31 and is examined The indoor heat exchanger pipe temperature T2 of the air-conditioner that the indoor environment temperature T1 and second temperature sensor 32 of survey are detected;
Dew-point temperature acquisition module 62, for obtaining instantaneous dew corresponding with the indoor environment temperature T1 under target humidity Point temperature Td;
Differential thermal calculation module 63, the temperature difference for calculating indoor environment temperature T1 and the indoor target temperature Ts of user's setting △T1, and the instantaneously temperature difference △ T of dew-point temperature Td and indoor heat exchanger pipe temperature T22
Control module 64, for according to the temperature difference △ T1And the temperature difference △ T2, air-conditioner is controlled, so that institute State temperature difference △ T1In default temperature range, and the temperature difference △ T2It is default initial temperature differences threshold value a;When the temperature Difference △ T1In default temperature range, and the temperature difference △ T2After for default temperature difference threshold, the indoor heat exchanger is judged Whether pipe temperature T2 is changed and variable quantity is located at outside default first domain of walker;
When the indoor heat exchanger pipe temperature T2 changes and variable quantity is located at outside default first domain of walker, according to The change of the indoor heat exchanger pipe temperature T2, controls the operation of air-conditioner, such as when indoor heat exchanger pipe temperature T2 rises, increase room Interior wind speed, or compressor operating frequency is reduced, or reduce system throttles etc., so that the change of the indoor heat exchanger pipe temperature T2 Amount is maintained in default first domain of walker.
The embodiment of the present invention when air-conditioner is dehumidified, by obtaining indoor environment temperature T1 and indoor heat exchanger Guan Wen T2, and calculate the temperature difference △ T between indoor environment temperature T1 and indoor target temperature Ts1And instantaneous dew-point temperature Td and interior Temperature difference △ T between Tube Sheet of Heat Exchanger temperature T22, then according to the temperature difference △ T1With temperature difference △ T2Air-conditioner is controlled.And And, during the Dehumidification controlling of air-conditioner, also by monitoring whether indoor environment temperature T1 and indoor heat exchanger pipe temperature T2 send out Changing, if changing, is controlled to air-conditioner, so that indoor environment temperature T1 and indoor heat exchanger pipe temperature T2 is maintained It is constant.Therefore, the embodiment of the present invention need not be the control of achievable indoor humidity by humidity sensor, but also can make Obtain indoor humidity and accurately attain target humidity.
Further, above-mentioned control module 64 specifically for:
When the pipe temperature T2 of indoor heat exchanger declines, the control indoor target temperature Ts and dew-point temperature Td is changed with interior Temperature difference T between the pipe temperature T2 of hot device2For:ΔT2=a-n*b;
When the pipe temperature T2 of indoor heat exchanger rises, the control indoor target temperature Ts and dew-point temperature Td is changed with interior Temperature difference T between the pipe temperature T2 of hot device2For:ΔT2=a+n*b;Wherein, a and b is default reference constant, and n is regulation time Number.
When the pipe temperature T2 of indoor heat exchanger changes, judge that pipe temperature T2 declines or rises according to variable quantity. So that the pipe temperature T2 of indoor heat exchanger declines as an example, the regulation process that the pipe temperature T2 of indoor heat exchanger rises is implemented with reference to it.Work as room When the pipe temperature T2 of interior heat exchanger declines, then to make temperature difference T2It is a-b, that is, the pipe temperature T2 for causing indoor heat exchanger is Td-a+b, Therefore air-conditioner is controlled according to the pipe temperature T2 of the indoor heat exchanger.After first secondary control, if the pipe of indoor heat exchanger Warm T2 still declines, then to make temperature difference T2It is a-2*b, that is, causes the pipe temperature T2 of indoor heat exchanger for Td-a+2*b, therefore root Air-conditioner is controlled according to the pipe temperature T2 of the indoor heat exchanger.The like, until the change of the indoor heat exchanger pipe temperature T2 Change amount is maintained in default first domain of walker.When by after control, the variable quantity of the indoor heat exchanger pipe temperature T2 is maintained When in default first domain of walker, then n is reset.
The embodiment of the present invention is based on indoor environment temperature T1, indoor heat exchanger pipe temperature T2, indoor target temperature Ts, instantaneous dew Put temperature Td and refer to constant a, b, the running frequency of compressor, the delivery temperature of compressor and blower fan can be automatically adjusted and turned Speed etc., so as to realize the relative humidity that dehumidification process can be effectively in control room, and then improves air conditioning comfortableness.
Further, above-mentioned control module 64 is additionally operable to:
When indoor heat exchanger pipe temperature T2 changes and variable quantity is located at outside default first domain of walker, according to described The change of indoor heat exchanger pipe temperature T2, controls after the operation of air-conditioner, also judges whether the indoor environment temperature T1 occurs Change and whether variable quantity is located at outside default second domain of walker;
When the indoor environment temperature T1 changes and variable quantity is located at outside default second domain of walker, to described Air-conditioner is controlled, so that the variable quantity of the indoor environment temperature T1 is maintained in default second domain of walker, and institute State temperature difference △ T2Maintain current state.
When the change according to the indoor heat exchanger pipe temperature T2, control after the operation of air-conditioner, will determine that indoor environment Whether temperature T1 changes, if changing, it is default that control module 64 judges whether the variable quantity of pipe temperature T2 is located at In second domain of walker.Specially:Indoor environment before and after Preset Time detects indoor environment temperature T1, and judgement twice Whether temperature T1 changes, and variable quantity is 0.5.If default second domain of walker is [- 0.5 ,+0.5], then the change is judged Change amount is in default second domain of walker.If variable quantity is 1, judge the variable quantity outside default second domain of walker.
When the indoor heat exchanger T1 does not change, or the variable quantity for changing is located at default second floating model In enclosing, then the control of control module 64 air-conditioner is maintained at current operating conditions.When the indoor environment temperature T1 changes, and Variable quantity is located at outside default second domain of walker, then according to the change of indoor environment temperature T1, control the operation of air-conditioner, with The variable quantity of the indoor environment temperature T1 is set to maintain in default second domain of walker.
As shown in figure 5, the invention allows for a kind of control device second embodiment of air-conditioner.The control of the air-conditioner Device includes:
Mode selection module 65, the mode selection command for receiving user obtains the selected pattern of user corresponding The control parameter of target humidity and indoor heat exchanger Guan Wen.
In the present embodiment, by default various dehumidification operating modes, every kind of dehumidification operating mode is provided with corresponding target humidity RH, control parameter a and b.The dehumidification operating mode is available for user to select.When user selects corresponding dehumidification operating mode, mould Formula selecting module 65 then obtains the corresponding control parameter of the selected dehumidification operating mode of user, and according to default Dehumidification controlling Scheme, corresponding Dehumidification controlling is carried out to air-conditioner.The present embodiment by providing the selection of user's dehumidification operating mode so that Obtaining user can allow that air-conditioner controls in suitable scope indoor humidity with the demand of oneself, meet different use The dehumidification at family.
The preferred embodiments of the present invention are the foregoing is only, the scope of the claims of the invention, every utilization is not thereby limited Equivalent structure or flow conversion that description of the invention 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 dehumidification control method of air-conditioner, it is characterised in that the dehumidification control method of the air-conditioner includes following step Suddenly:
When detecting dehumidifying instruction, the indoor heat exchanger pipe temperature T2 of indoor environment temperature T1 and air-conditioner is periodically obtained;
Obtain instantaneous dew-point temperature Td corresponding with the indoor environment temperature T1 under target humidity;
Calculate the temperature difference △ T of the indoor environment temperature T1 and indoor target temperature Ts1, and instantaneously dew-point temperature Td is changed with interior Temperature difference △ T between the pipe temperature T2 of hot device2
According to the temperature difference △ T1And the temperature difference △ T2, air-conditioner is controlled, so that the temperature difference △ T1Positioned at default In temperature range, and the temperature difference △ T2It is default initial temperature differences threshold value a;
As the temperature difference △ T1In default temperature range, and the temperature difference △ T2After for default temperature difference threshold, institute is judged State whether indoor heat exchanger pipe temperature T2 is changed and variable quantity is located at outside default first domain of walker;
When the indoor heat exchanger pipe temperature T2 changes and variable quantity is located at outside default first domain of walker, according to described The change of indoor heat exchanger pipe temperature T2, controls the operation of air-conditioner, so that the variable quantity of the indoor heat exchanger pipe temperature T2 is maintained In default first domain of walker.
2. the dehumidification control method of air-conditioner as claimed in claim 1, it is characterised in that described as indoor heat exchanger pipe temperature T2 Change and variable quantity is located at when outside default first domain of walker, according to the change of the indoor heat exchanger pipe temperature T2, control The operation of air-conditioner processed includes:
When the indoor heat exchanger pipe temperature T2 declines, the temperature difference △ T are controlled2=a-n*b;
When the indoor heat exchanger pipe temperature T2 rises, the temperature difference △ T are controlled2=a+n*b;Wherein a and b is default reference Constant, n is regulation number of times.
3. the dehumidification control method of air-conditioner as claimed in claim 1, it is characterised in that described as indoor heat exchanger pipe temperature T2 Change and variable quantity is located at when outside default first domain of walker, according to the change of the indoor heat exchanger pipe temperature T2, control Also include after the operation of air-conditioner processed:
Judge whether the indoor environment temperature T1 is changed and whether variable quantity is located at outside default second domain of walker;
When the indoor environment temperature T1 changes and variable quantity is located at outside default second domain of walker, to the air-conditioning Device is controlled, so that the variable quantity of the indoor environment temperature T1 is maintained in default second domain of walker, and the temperature Difference △ T2Maintain current state.
4. the dehumidification control method of the air-conditioner as described in claim any one of 1-3, it is characterised in that described to detect dehumidifying During instruction, also include before the indoor heat exchanger pipe temperature T2 for obtaining indoor environment temperature T1 and air-conditioner:
The mode selection command of user is received, the corresponding target humidity of the selected pattern of user and indoor heat exchanger Guan Wen is obtained Control parameter.
5. a kind of air-conditioner, it is characterised in that the air-conditioner includes processor, first be disposed in the interior at machine return air inlet temperature Degree sensor, the second temperature sensor being disposed in the interior on heat exchanger, the processor include:
Temperature acquisition module, for detecting during dehumidifying instruction, periodically obtains the interior that the first temperature sensor is detected The indoor heat exchanger pipe temperature T2 of the air-conditioner that environment temperature T1 and second temperature sensor are detected;
Dew-point temperature acquisition module, for obtaining instantaneous dew-point temperature corresponding with the indoor environment temperature T1 under target humidity Td;
Differential thermal calculation module, the temperature difference △ T1 for calculating indoor environment temperature T1 and the indoor target temperature Ts of user's setting, And the temperature difference △ T2 of instantaneous dew-point temperature Td and indoor heat exchanger pipe temperature T2;
Control module, for according to the temperature difference △ T1 and temperature difference △ T2, being controlled to air-conditioner, so that the temperature difference △ T1 are located in default temperature range, and the temperature difference △ T2It is default initial temperature differences threshold value a;As the temperature difference △ T1 In default temperature range, and the temperature difference △ T2After for default temperature difference threshold, the indoor heat exchanger Guan Wen is judged Whether T2 is changed and variable quantity is located at outside default first domain of walker;
When the indoor heat exchanger pipe temperature T2 changes and variable quantity is located at outside default first domain of walker, according to described The change of indoor heat exchanger pipe temperature T2, controls the operation of air-conditioner, so that the variable quantity of the indoor heat exchanger pipe temperature T2 is maintained In default first domain of walker.
6. air-conditioner as claimed in claim 5, it is characterised in that when the indoor heat exchanger pipe temperature T2 changes and changes Amount is located at when outside default first domain of walker, and the control module is used for:
When the indoor heat exchanger pipe temperature T2 declines, the temperature difference △ T are controlled2=a-n*b;
When the indoor heat exchanger pipe temperature T2 rises, the temperature difference △ T are controlled2=a+n*b;Wherein a and b is default reference Constant, n is regulation number of times.
7. air-conditioner as claimed in claim 5, it is characterised in that the control module is additionally operable to:
When indoor heat exchanger pipe temperature T2 changes and variable quantity is located at outside default first domain of walker, according to the interior The change of Tube Sheet of Heat Exchanger temperature T2, controls after the operation of air-conditioner, also judges whether the indoor environment temperature T1 changes And whether variable quantity is located at outside default second domain of walker;
When the indoor environment temperature T1 changes and variable quantity is located at outside default second domain of walker, to the air-conditioning Device is controlled, so that the variable quantity of the indoor environment temperature T1 is maintained in default second domain of walker, and the temperature Difference △ T2Maintain current state.
8. the air-conditioner as described in claim any one of 5-7, it is characterised in that the processor also includes:
Mode selection module, the mode selection command for receiving user obtains the corresponding target of the selected pattern of user wet The control parameter of degree and indoor heat exchanger Guan Wen.
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