CN105588272A - Control method and device for air-conditioner draught fan - Google Patents
Control method and device for air-conditioner draught fan Download PDFInfo
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- CN105588272A CN105588272A CN201510641300.2A CN201510641300A CN105588272A CN 105588272 A CN105588272 A CN 105588272A CN 201510641300 A CN201510641300 A CN 201510641300A CN 105588272 A CN105588272 A CN 105588272A
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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
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Abstract
The embodiment of the invention provides a control method and device for an air-conditioner draught fan. The control method and device for the air-conditioner draught fan can make the output capability of an air-conditioner and the indoor load be consistent. The control method comprises the steps that the indoor temperature is detected according to a preset first detection period; at the current detection moment, the temperature difference value of the indoor temperature and a setting temperature and the change rate of the indoor temperature are obtained, or the temperature difference value of the indoor temperature and the setting temperature and the variable quantity of the indoor temperature in one detection period are acquired; according to the temperature difference value and the change rate of the indoor temperature, or on the basis of the temperature difference value and the variable quantity of the indoor temperature in one detection period, the indoor draught fan of the constant-frequency air-conditioner is controlled to operate according to preset rules; the preset rules comprise that when the temperature difference value is within a preset threshold range, under the condition of a certain temperature difference value, the air speed of the indoor draught fan is decreased as the change rate of the indoor temperature/the variable quantity of the indoor temperature in one detection period is increased gradually. The control method and device for the air-conditioner draught fan are suitable for the field of air-conditioners.
Description
Technical field
The present invention relates to field of air conditioning, relate in particular to a kind of air-conditioning draught fan control method and device.
Background technology
At present, air-conditioning can be divided into convertible frequency air-conditioner and fixed frequency air conditioner. Wherein, fixed frequency air conditioner is by adjustingThe wind speed of joint air-conditioning draught fan is realized the adjusting to temperature.
Taking indoor fan as example, fixed frequency air conditioner is with the temperature approach of indoor temperature and user's design temperatureAs unique controlled quentity controlled variable, temperature approach excursion is divided into several temperature difference intervals roughly,The interval corresponding specific wind speed of each temperature difference, by periodically detecting indoor temperature, and according toThe temperature approach of indoor temperature and user's design temperature is determined wind speed, and then according to determined wind speedRealize the adjusting to indoor fan wind speed. Because existing air-conditioning draught fan control method is basisThe temperature approach of indoor temperature and user's design temperature is carried out coarse adjustment to the wind speed of air-conditioning draught fan,Do not consider indoor load, therefore can cause the fan-out capability of air-conditioning and indoor load inconsistent.Specifically, when heavy load, the fan-out capability of air-conditioning cannot meet refrigerating/heating demand, realityIndoor temperature do not reach design temperature; Light hours, indoor temperature more easily reaches design temperature,Indoor temperature reaches after design temperature, controls compressor shutdown, after a period of time, and Indoor TemperatureDegree will go up again/decline, and cause the temperature approach of design temperature and indoor temperature to change, nowNeed again to control compressor start, regulate blower fan wind speed, so repeatedly simultaneously. That is, the light hours,Indoor temperature can be centered around design temperature place and back and forth shake, and causes compressor repeatedly starting and stopping machine.
To sum up, existing air-conditioning draught fan control method can cause air-conditioning fan-out capability and indoor loadInconsistent, and then the comfortableness of air-conditioning and energy saving are declined, user experiences poor.
Summary of the invention
Embodiments of the invention provide a kind of air-conditioning draught fan control method and device, at least to solveThe air-conditioning fan-out capability that existing air-conditioning draught fan control method exists and indoor load is inconsistent asksTopic, can make air-conditioning fan-out capability and indoor load be consistent, and in the time that indoor load is heavier, protectsCard indoor temperature can reach design temperature, in the time that indoor load is lighter, can reduces compressor and openThe number of times of shutting down.
For achieving the above object, embodiments of the invention adopt following technical scheme:
First aspect, provides a kind of air-conditioning draught fan control method, comprising:
Detect indoor temperature according to the first default sense cycle;
In the current detection moment, obtain temperature approach and the indoor temperature of indoor temperature and design temperatureRate of change, or, the temperature approach of indoor temperature and design temperature and indoor temperature obtained at oneVariable quantity in sense cycle, described indoor temperature change generated in case rate represents that indoor temperature is a detectionIntensity of variation in cycle;
According to described temperature approach and described indoor temperature change generated in case rate, or, according to described temperature approachWith the variable quantity of described indoor temperature in a sense cycle, according to preset rules, control instituteState the indoor fan running of fixed frequency air conditioner; Wherein, described preset rules comprises: described temperature approachWithin the scope of predetermined threshold value time, in the situation that described temperature approach is certain, described indoor fanWind speed change in a sense cycle with described indoor temperature change generated in case rate/described indoor temperatureThe increasing progressively to be of change amount reduces trend.
Second aspect, provides a kind of air-conditioning draught fan control device, comprising: detecting unit, obtainUnit and control module;
Described detecting unit, for detecting indoor temperature according to the first default sense cycle;
Described acquiring unit, in the current detection moment, obtains indoor temperature and design temperatureTemperature approach and indoor temperature change generated in case rate, or, obtain the temperature difference of indoor temperature and design temperatureValue and the variable quantity of indoor temperature in a sense cycle, described indoor temperature change generated in case rate representsThe intensity of variation of indoor temperature in a sense cycle;
Described control module, for according to described temperature approach and described indoor temperature change generated in case rate, orPerson, the variable quantity in a sense cycle according to described temperature approach and described indoor temperature, pressesAccording to preset rules, control the indoor fan running of described fixed frequency air conditioner; Wherein, described default ruleComprise: described temperature approach is within the scope of predetermined threshold value time, in the certain feelings of described temperature approachUnder condition, the wind speed of described indoor fan with described indoor temperature change generated in case rate/described indoor temperature oneThe increasing progressively to be of variable quantity in individual sense cycle reduces trend.
In prior art, using the temperature approach of indoor temperature and user's design temperature as unique controlAmount, carries out coarse adjustment to the wind speed of air-conditioning draught fan, and does not consider current indoor load, because ofThis can cause the fan-out capability of air-conditioning and indoor load inconsistent, make in the time that indoor load is heavierIndoor temperature does not reach design temperature, and in the time that indoor load is lighter compressor repeatedly starting and stopping machine.And air-conditioning draught fan control method and device that the embodiment of the present invention provides, unlike the prior art,No longer only according to the temperature approach of indoor temperature and user's design temperature, indoor fan is regulated,But in considering the temperature approach of indoor temperature and design temperature, also introduce another oneParameter-indoor temperature change generated in case rate or the indoor temperature variable quantity in a sense cycle, due toThis parameter can reflect air-conditioning fan-out capability and indoor load relativeness, therefore the invention processThe air-conditioning draught fan control method that example provides and device are according to the temperature approach of indoor temperature and design temperatureAnd indoor temperature change generated in case rate or the variable quantity of indoor temperature in a sense cycle, according in advanceIf the running of regular control room inner blower, can make air-conditioning fan-out capability and indoor load be consistent,Thereby ensure that indoor temperature can reach design temperature in the time that indoor load is heavier, at indoor loadWhen lighter, can reduce the number of times of start/stop of compressor machine. Particularly, temperature approach is in default thresholdWithin the scope of value time, in the situation that temperature approach is certain, the wind speed of control room inner blower is with Indoor TemperatureThe increasing progressively of variable quantity of degree rate of change/indoor temperature in a sense cycle and reducing, that is,When the variable quantity of indoor temperature change generated in case rate/indoor temperature in a sense cycle is larger, i.e. air-conditioningThe energy producing causes that degree that indoor environment temperature changes is greatly time, and control room inner blower is withLow wind speed running, the change in a sense cycle in indoor temperature change generated in case rate or indoor temperatureHour, the energy that air-conditioning produces causes degree that indoor environment temperature changes hour to change amount,Control room inner blower is with higher wind speed running. Thus, can make air-conditioning fan-out capability withIndoor load is consistent, thereby ensureing that indoor temperature can reach in the time that indoor load is heavier establishesFixed temperature can reduce the number of times of start/stop of compressor machine in the time that indoor load is lighter.
The air-conditioning draught fan control method that, embodiments of the invention provide and device can solve existingThe air-conditioning fan-out capability that some air-conditioning draught fan control methods exists and indoor load is inconsistent asksTopic, in the time that indoor load is heavier, can ensure that indoor temperature can reach design temperature, indoorLoad when lighter, can reduce the number of times of start/stop of compressor machine.
Brief description of the drawings
A kind of air-conditioning draught fan control method flow process signal that Fig. 1 (a) provides for the embodiment of the present inventionFigure mono-;
A kind of air-conditioning draught fan control method flow process signal that Fig. 1 (b) provides for the embodiment of the present inventionFigure bis-;
A kind of air-conditioning draught fan control method flow process signal that Fig. 2 (a) provides for the embodiment of the present inventionFigure tri-;
A kind of air-conditioning draught fan control method flow process signal that Fig. 2 (b) provides for the embodiment of the present inventionFigure tetra-;
A kind of air-conditioning draught fan control method schematic flow sheet that Fig. 3 (a) provides for the embodiment of the present inventionFive;
A kind of air-conditioning draught fan control method schematic flow sheet that Fig. 3 (b) provides for the embodiment of the present inventionSix;
A kind of air-conditioning draught fan control method schematic flow sheet that Fig. 4 (a) provides for the embodiment of the present inventionSeven;
A kind of air-conditioning draught fan control method schematic flow sheet that Fig. 4 (b) provides for the embodiment of the present inventionEight;
The structural representation of a kind of air-conditioning draught fan control device that Fig. 5 provides for the embodiment of the present inventionOne;
The structural representation of a kind of air-conditioning draught fan control device that Fig. 6 provides for the embodiment of the present inventionTwo.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, to the technical side in the embodiment of the present inventionCase is clearly and completely described, and obviously, described embodiment is only one of the present inventionDivide embodiment, instead of whole embodiment. Based on the embodiment in the present invention, this area is generalLogical technical staff is not making the every other embodiment obtaining under creative work prerequisite,All belong to the scope of protection of the invention.
For the ease of the clear technical scheme of describing the embodiment of the present invention, at embodiments of the inventionIn, adopt the printed words such as " first ", " second " essentially identical identical to function and efficacyItem or similar item are distinguished, and it will be appreciated by those skilled in the art that " first ", " second "Quantity and execution order are not limited Deng printed words.
Embodiment mono-,
The embodiment of the present invention provides a kind of air-conditioning draught fan control method, is applied to fixed frequency air conditioner, asShown in Fig. 1 (a), described method comprises:
S101, air-conditioning draught fan control device detect indoor temperature according to the first default sense cycle.
S102a, air-conditioning draught fan control device, in the current detection moment, obtain indoor temperature and settingThe temperature approach of temperature and indoor temperature change generated in case rate.
S103a, air-conditioning draught fan control device be according to temperature approach and indoor temperature change generated in case rate, according in advanceIf regular, control the indoor fan running of fixed frequency air conditioner.
Or, as shown in Fig. 1 (b), comprising:
S101, air-conditioning draught fan control device detect indoor temperature according to the first default sense cycle.
S102b, air-conditioning draught fan control device, in the current detection moment, obtain indoor temperature and settingThe temperature approach of temperature and the indoor temperature variable quantity in a sense cycle.
S103b, air-conditioning draught fan control device according to temperature approach and indoor temperature a sense cycleInterior variable quantity, according to preset rules, controls the indoor fan running of fixed frequency air conditioner.
Wherein, described design temperature refers to that user passes through air-conditioning remote control or indoor apparatus of air conditioner chain of commandThe target temperature that plate is set; A described sense cycle is carved into current while referring to from last detectionDetect a sense cycle in moment.
The variable quantity of described indoor temperature in a sense cycle refers to the indoor temperature of current timeTemperature approach with the last indoor temperature that detects the moment. Easily understand, if indoor temperature is at oneVariable quantity in sense cycle is less, is illustrated in the energy institute that in this sense cycle, air-conditioning producesThe degree that the indoor environment temperature causing changes (rise or decline) is less, shows this detection weekPhase inner room load is relatively heavier; Otherwise, if the variation of indoor temperature in a sense cycleMeasure greatlyr, be illustrated in the caused indoor environment temperature of energy that air-conditioning produces in this sense cycleThe degree that degree changes is larger, shows that this sense cycle inner room load is relatively light.
Described indoor temperature change generated in case rate represents the variation journey of indoor temperature in a sense cycleDegree. Particularly, if indoor temperature change generated in case rate is less, represent from the last detection moment to working asThe caused indoor environment temperature of energy that in a sense cycle in front detection moment, air-conditioning producesThe degree changing is less, illustrates that this section of time inner room load is relatively heavier; If indoor temperature becomesRate is larger, represents in a sense cycle in last detection moment to current detection momentThe degree that the caused indoor environment temperature of energy that air-conditioning produces changes greatly, while illustrating this sectionBetween inner room load relatively light. , indoor temperature change generated in case rate and indoor temperature are a detectionVariable quantity in cycle all can reflect the relativeness of air-conditioning fan-out capability and indoor load.
Preset rules comprises: temperature approach is within the scope of predetermined threshold value time, certain in temperature approachIn situation, the wind speed of indoor fan with indoor temperature change generated in case rate/indoor temperature a sense cycleIn the increasing progressively to be and reduce trend of variable quantity.
Wherein, it should be noted that, temperature approach is within the scope of predetermined threshold value time, indoor temperatureComparatively approaching with design temperature. It is readily appreciated by a person skilled in the art that predetermined threshold value can lead toCross a large amount of experimental summaries conclusions and obtain, the embodiment of the present invention is not done concrete restriction to this.
In prior art, using the temperature approach of indoor temperature and design temperature as unique controlled quentity controlled variable,In the time that indoor temperature and design temperature comparatively approach, control room inner blower is shut down. If work as cupInternal loading is heavier, and control room inner blower shutdown can make indoor temperature not reach design temperature; If work asFront indoor load is lighter, and indoor temperature more easily reaches design temperature, easily make indoor temperature aroundAt design temperature, back and forth shake at place, causes compressor repeatedly starting and stopping machine.
And the air-conditioning draught fan control method that the embodiment of the present invention provides can reflect owing to having introducedThe parameter one indoor temperature change generated in case rate and indoor of the relativeness of air-conditioning fan-out capability and indoor loadThe variable quantity of temperature in a sense cycle, therefore, by with indoor temperature and design temperatureTemperature approach and indoor temperature change generated in case rate or the variable quantity of indoor temperature in a sense cycleAs control variables, and according to preset rules control room inner blower running, make temperature approach in advanceIf in threshold range time, in the situation that temperature approach is certain, the wind speed of indoor fan is with Indoor TemperatureThe increasing progressively of variable quantity of degree rate of change/indoor temperature in a sense cycle and reducing, that is,(the air-conditioning when variable quantity of indoor temperature change generated in case rate/indoor temperature in a sense cycle is largerThe energy producing causes that degree that indoor environment temperature changes is greatly time), control room inner blower withThe running of lower wind speed, in indoor temperature change generated in case rate or indoor temperature in a sense cycleVariable quantity (is hour that energy that air-conditioning produces causes that the degree that indoor environment temperature changes is lessTime), control room inner blower, with higher wind speed running, can make air-conditioning fan-out capability and indoorLoad is consistent, thereby ensures that indoor temperature can reach setting temperature in the time that indoor load is heavierSpend, in the time that indoor load is lighter, can reduce the number of times of start/stop of compressor machine.
In addition, also it should be noted that, one of ordinary skill in the art will appreciate that, for wind speedFor continuously adjustable indoor fan, as impulse generator (PulseGenerator, PG) motor,Can be according to indoor temperature change generated in case rate or indoor temperature the variable quantity in a sense cycle largeLittle, change continuously according to the wind speed of aforementioned preset rules control room inner blower, so that air-conditioning outputAbility and indoor load are consistent. And be not continuously adjustable indoor fan for wind speed, asPress gear and regulate the blower fan of wind speed, because gear is limited, according to indoor temperature change generated in case rate or chamberWhen the variable quantity of interior temperature in a sense cycle regulates the wind speed of air-conditioning draught fan, exist indoorLoad difference but the identical special circumstances of the gear of air-conditioning draught fan.
In a kind of implementation of the embodiment of the present invention, air-conditioning draught fan control device obtains Indoor TemperatureThe temperature approach of degree and design temperature, specifically can comprise:
Air-conditioning draught fan control device is determined the operational mode of air-conditioning, and obtains design temperature and currentDetect the indoor temperature in moment;
If the operational mode of air-conditioning is heating mode, air-conditioning draught fan control device is according to current detectionThe indoor temperature in moment, design temperature, obtain temperature approach according to the first default formula;
If the operational mode of air-conditioning is refrigeration mode, according to the indoor temperature in current detection moment,Design temperature, obtains temperature approach according to the second default formula.
Wherein, first pre-establish formula as shown in formula (1):
ΔT＝Ts-TaiFormula (1)
The second default formula is as shown in formula (2):
ΔT＝Tai-Ts formula (2)
Wherein, Δ T represents temperature approach, and Ts represents design temperature, TaiRepresent the current detection momentIndoor temperature.
, preset rules can also comprise:
When temperature approach is greater than the first preset value, the wind speed of indoor fan is high wind speed; Temperature approachWhile being less than the second preset value, the wind speed of indoor fan is minimum wind speed.
, when air-conditioning when under heating mode, indoor temperature is far below design temperature and air-conditioning existWhen under refrigeration mode, indoor temperature is far above design temperature, control room inner blower is with the highest targetWind speed running, to promote air-conditioning fan-out capability, makes indoor temperature fast rise/drop to and set temperatureDegree; When air-conditioning when under heating mode, indoor temperature is far above design temperature and air-conditioning in refrigerationWhen under pattern, indoor temperature is far below design temperature, control room inner blower is with minimum target wind speedRunning, to reduce air conditioning energy consumption.
Concrete, air-conditioning draught fan control device obtains indoor temperature change generated in case rate, specifically can comprise:
Air-conditioning draught fan control device obtains the indoor temperature in last detection moment, and according to defaultThe Indoor Temperature in the indoor temperature in the first sense cycle, last detection moment and current detection momentDegree, obtains indoor temperature change generated in case rate according to the 3rd default formula.
Wherein, the 3rd default formula is as shown in formula (3):
Wherein, σ represents indoor temperature change generated in case rate, Tai-1Represent the Indoor Temperature in last detection momentDegree, T represents the first sense cycle.
Connect, with TaiRepresent the indoor temperature in current detection moment, Tai-1While representing last detectionThe indoor temperature of carving, air-conditioning draught fan control device specifically can be according to formula as follows (4)Obtain the variable quantity of indoor temperature in a sense cycle:
Δt＝Tai-Tai-1Formula (4)
Wherein, Δ t represents the variable quantity of indoor temperature in a sense cycle.
, in a kind of possible implementation, air-conditioning draught fan control device is according to temperature approach and chamberInterior rate of temperature change, according to preset rules, controls the indoor fan running of fixed frequency air conditioner, concreteCan comprise:
Air-conditioning draught fan control device quantizes temperature approach and indoor temperature change generated in case rate, obtains phaseAnswer the conversion value of temperature approach and indoor temperature change generated in case rate on domain;
Air-conditioning draught fan control device is according to the conversion of the conversion value of temperature approach and indoor temperature change generated in case rateValue, the first rule list that inquiry prestores obtains target wind speed, and control room inner blower is with target wind speedRunning.
Wherein, the first rule list is the wind speed of temperature approach and indoor temperature change generated in case rate and indoor fanCorresponding relation, and the first rule list is to obtain by a large amount of experiment according to preset rules in advance.
It should be noted that, one of ordinary skill in the art will appreciate that, described domain is inputThe span of variable (being temperature approach, indoor temperature change generated in case rate) after quantizing.
In another kind of possible implementation, air-conditioning draught fan control device is according to temperature approach and indoorThe variable quantity of temperature in a sense cycle, according to preset rules, controls the chamber of fixed frequency air conditionerInner blower running, specifically can comprise:
Air-conditioning draught fan control device quantizes temperature approach and indoor temperature change generated in case rate, obtains phaseAnswer the conversion value of temperature approach and indoor temperature change generated in case rate on domain;
Air-conditioning draught fan control device is according to the conversion of the conversion value of temperature approach and indoor temperature change generated in case rateValue, the Second Rule table that inquiry prestores obtains target wind speed, and control room inner blower is with target wind speedRunning.
Wherein, Second Rule table is temperature approach and the variation of indoor temperature in a sense cycleThe corresponding relation of amount and the wind speed of indoor fan, and Second Rule table is in advance according to preset rulesObtain by a large amount of experiments.
Exemplary, suppose that indoor fan has high, medium and low third gear wind speed, below provides oneThe first possible rule list and Second Rule table are respectively as shown in Table 1 and Table 2. In table, H representsThe top gear of indoor fan, M is the mid ranger that represents indoor fan, L represents the low speed of indoor fanShelves, 0 represents compressor shutdown, all the other each alphabetical implications are the same.
Table 1
Table 2
For instance, suppose that the current operational mode of air-conditioning is heating mode, current time is indoorTemperature approach, indoor temperature change generated in case rate conversion value on domain of temperature and design temperature are respectively1.5 ,-2, question blank 1, known corresponding target wind speed is H, i.e. top gear.
Taking table 1 as example, in analytical table 1 when the temperature approach Δ T=0.5 of indoor temperature and design temperatureData known, with the increase of indoor temperature change generated in case rate, corresponding wind speed is followed successively by: H → M → M→ L → L, with the increasing progressively of indoor temperature change generated in case rate, corresponding wind speed is gradually and reduces trend.As previously mentioned, because the gear of indoor fan only has high, medium and low third gear, therefore cannot make itWind speed reduces with the increase linearity of indoor temperature change generated in case rate, thereby there will be special circumstances: σ=-0.5And σ=0 o'clock, wind speed is M, σ=0.5 and σ >=1 o'clock, and wind speed is L.
Further, the number when temperature approach Δ T=0 of indoor temperature and design temperature in analytical table 1According to, in σ≤-1 o'clock, corresponding wind speed is middle-grade wind speed; In σ >=1 o'clock, corresponding wind speed is notBe 0, but low-grade wind speed. That is, in the time that indoor load is heavier, even now indoor temperature with establishIt is less that fixed temperature differs, and corresponding wind speed also should be higher; And in the time that indoor load is lighter, evenNow indoor temperature and design temperature differ less, and corresponding wind speed not should be zero yet, but oneIndividual lower wind speed.
It should be noted that, the rule list shown in table 1, table 2 is only that the embodiment of the present invention providesConcrete example, do not form limitation of the invention.
In the another kind of implementation of the embodiment of the present invention, air-conditioning draught fan control device obtains indoorThe temperature approach of temperature and design temperature, specifically can comprise:
Obtain design temperature and the indoor temperature in current detection moment, and according to the current detection momentIndoor temperature, design temperature, obtain institute according to the first default formula as shown in formula (1)State temperature approach.
, preset rules can also comprise:
If the operational mode of fixed frequency air conditioner is heating mode, when temperature approach is greater than the first preset value,The wind speed of indoor fan is high wind speed, when temperature approach is less than the second preset value, indoor fanWind speed is minimum wind speed; If the operational mode of fixed frequency air conditioner is refrigeration mode, temperature approach is greater thanWhen one preset value, the wind speed of indoor fan is minimum wind speed, when temperature approach is less than the second preset value,The wind speed of indoor fan is high wind speed.
, when air-conditioning is under heating mode, indoor temperature is during far below design temperature, control roomInner blower, with the highest target wind speed running, to promote air-conditioning fan-out capability, makes indoor temperature fastSpeed rises to design temperature; And indoor temperature is during far above design temperature, wind in control roomMachine is with minimum target wind speed running, to reduce air conditioning energy consumption. When air-conditioning is under refrigeration mode,Indoor temperature is during far above design temperature, and control room inner blower is with the highest target wind speed running,To promote air-conditioning fan-out capability, make indoor temperature fast-descending to design temperature; And, indoorTemperature is during far below design temperature, and control room inner blower is with minimum target wind speed running, to fallLow air conditioning energy consumption.
, in a kind of possible implementation, air-conditioning draught fan control device is according to temperature approach and chamberInterior rate of temperature change, according to preset rules, controls the indoor fan running of fixed frequency air conditioner, concreteCan comprise:
Air-conditioning draught fan control device quantizes temperature approach and indoor temperature change generated in case rate, obtains phaseAnswer the conversion value of temperature approach and indoor temperature change generated in case rate on domain;
Air-conditioning draught fan control device is determined the operational mode of fixed frequency air conditioner, if the operation of fixed frequency air conditionerPattern is heating mode, according to the conversion value of the conversion value of temperature approach and indoor temperature change generated in case rate,The three sigma rule table that inquiry prestores obtains target wind speed, and control room inner blower turns round with target wind speed;If the operational mode of fixed frequency air conditioner is refrigeration mode, according to the conversion value of temperature approach and indoor temperatureThe conversion value of rate of change, the 4th rule list that inquiry prestores obtains target wind speed, wind in control roomMachine turns round with target wind speed.
Wherein, three sigma rule table is fixed frequency air conditioner temperature approach and indoor temperature change under heating modeThe corresponding relation of the wind speed of rate and indoor fan, the 4th rule list is that fixed frequency air conditioner is at refrigeration mouldThe corresponding relation of the wind speed of temperature approach and indoor temperature change generated in case rate and indoor fan under formula, and the 3rdRule list and the 4th rule list are what obtain by great many of experiments according to preset rules in advance.
In another kind of possible implementation, air-conditioning draught fan control device is according to temperature approach and indoorThe variable quantity of temperature in a sense cycle, according to preset rules, controls the chamber of fixed frequency air conditionerInner blower running, specifically can comprise:
The variation in a sense cycle to temperature approach and indoor temperature of air-conditioning draught fan control deviceQuantize, obtain temperature approach and indoor temperature on corresponding domain in a sense cycleThe conversion value of variable quantity;
Air-conditioning draught fan control device is determined the operational mode of fixed frequency air conditioner, if the operational mode of air-conditioningFor heating mode, the change in a sense cycle according to the conversion value of temperature approach and indoor temperatureThe conversion value of change amount, the 5th rule list that inquiry prestores obtains target wind speed, control room inner blowerTurn round with target wind speed; If the operational mode of fixed frequency air conditioner is refrigeration mode, according to temperature approachThe conversion value of conversion value and the indoor temperature variable quantity in a sense cycle, inquiry prestoresThe 6th rule list obtains target wind speed, and control room inner blower turns round with target wind speed.
Wherein, the 5th rule list is that fixed frequency air conditioner temperature approach and indoor temperature under heating mode existThe corresponding relation of the variable quantity in a sense cycle and the wind speed of indoor fan, the 6th rule listFor fixed frequency air conditioner temperature approach and indoor temperature variation in a sense cycle under refrigeration modeThe corresponding relation of amount and the wind speed of indoor fan, and the 5th rule list and the 6th rule list are in advanceObtain by great many of experiments according to preset rules.
Preferably, as shown in Fig. 2 (a) and 2 (b), the air-conditioner wind that the embodiment of the present invention providesMachine control method can also comprise:
S104, be greater than the 3rd preset value and be less than in the temperature approach of indoor temperature and design temperatureAfter the 4th preset value, air-conditioning draught fan control device is according in the second default sense cycle sensing chamberTemperature.
If the temperature approach of S105 indoor temperature and design temperature is less than the 3rd preset value, air-conditioner windMachine control device reduces the wind speed of indoor fan; If the temperature approach of indoor temperature and design temperature is largeIn the 4th preset value, air-conditioning draught fan control device increases the wind speed of indoor fan; Otherwise, air-conditioner windThe wind speed of machine control device holding chamber inner blower is constant.
Wherein, it should be noted that, the 3rd preset value and the 4th preset value specifically can be according to air-conditioningsTemperature-controlled precision arrange, for example, suppose that the temperature-controlled precision of air-conditioning is ± 0.5 DEG C, the 3rdPreset value can be set to-0.5 DEG C, and the 4th preset value can be set to 0.5 DEG C. Be appreciated thatIf the temperature approach of indoor temperature and design temperature is greater than the 3rd preset value and is less than the 4th preset value(temperature approach that is indoor temperature and design temperature forms at the 3rd preset value and the 4th preset valueInterval in), think that now indoor temperature has reached design temperature.
Concrete, not continuously adjustable indoor fan for wind speed, reduce/increase indoor fanWind speed can be specifically that the wind speed of indoor fan is reduced/increase one grade; And be to connect for wind speedContinuous adjustable indoor fan, as PG motor, the variable quantity of wind speed Primary regulation can be specifically phaseThe 1/m (m is integer, m >=1) of difference between adjacent two grades of wind speed, the embodiment of the present invention is not made tool to thisBody limits.
It should be noted that, the air-conditioning draught fan control method that the embodiment of the present invention provides can first be carried outStep S101-S103a/ step S101-S103b, in repeated execution of steps S101-S103a/ stepSeveral cycles of S101-S103b are adjusted to indoor temperature after design temperature, then perform stepS104-S105; Also can first detect current indoor temperature and whether reach design temperature, if reach settingTemperature performs step S105, performs step S101-S103a/ step if do not reach design temperatureRapid S101-S103b. That is, in the air-conditioning draught fan control method that the embodiment of the present invention provides, stepBetween S104-S105 and step S101-S103a/ step S101-S103b, do not have strict holdingRow order, can be according to shown in Fig. 2 (a) and 2 (b), in step S101-S103a/ stepAfter S101-S103b, perform step S104-S105, also can be in step S101-S103a/ stepBefore S101-S103b, perform step S104-S105, the embodiment of the present invention is not made concrete limit to thisFixed.
Further, as shown in Fig. 3 (a) and 3 (b), the air-conditioning that the embodiment of the present invention providesBlower control method can also comprise:
S106, all large in continuous n the detection moment in the temperature approach of indoor temperature and design temperatureIn the 3rd preset value and be less than after the 5th preset value, air-conditioning draught fan control device reduces indoor windThe wind speed of machine.
Or,
The temperature approach of S107, indoor temperature and design temperature was all greater than in continuous n the detection momentThe 5th preset value and being less than after the 4th preset value, air-conditioning draught fan control device increases indoor fanWind speed.
Wherein, the 5th preset value is less than the 4th preset value and is greater than the 3rd preset value, and n is integer,n≥2。
,, indoor temperature being adjusted to after user's design temperature, indoor temperature and user are establishedThe temperature approach of fixed temperature is monitored, if follow-up continuous n moment indoor temperature and design temperatureTemperature approach all in [the 3rd preset value, the 5th preset value] interval, reduce the wind of indoor fanSpeed; If the temperature approach of follow-up continuous n moment indoor temperature and design temperature is all [the 5th is defaultValue, the 4th preset value] interval, increase the wind speed of indoor fan. Visible, the embodiment of the present inventionThe air-conditioning draught fan control method providing, by the 5th preset value is set, can improve the temperature control essence of air-conditioningDegree.
With upper similar, step S104-S106/S107 and step S101-S103a/ stepBetween S101-S103b, do not have strict execution sequence, can be according to Fig. 3 (a) and 3 (b) instituteShow execution step after step S101-S103a/ step S101-S103bS104-S106/S107 also can carry out before step S101-S103a/ step S101-S103bStep S104-S106/S107, the embodiment of the present invention is not done concrete restriction to this.
In prior art, the control of outdoor fan of air-conditioner depends on outdoor environment temperature, concrete andSpeech, by the excursion of outdoor environment temperature is divided into several intervals, each interval is rightSpecifically wind speed, and periodically detect outdoor environment temperature, true according to outdoor environment temperatureFixed corresponding wind speed, and then the wind speed of outdoor fan is regulated. Due to prior art onlyAccording to outdoor environment temperature, the wind speed of outdoor fan is regulated, and do not consider indoorTruth, therefore there will be the unmatched problem of indoor and outdoor exchange capability of heat, and it is unnecessary to bringEnergy consumption, causes air-conditioning Energy Efficiency Ratio to decline.
Further, as shown in Fig. 4 (a), for improving air-conditioning Energy Efficiency Ratio, the invention processThe air-conditioning draught fan control method that example provides can also comprise:
S108a, air-conditioning draught fan control device be according to indoor temperature change generated in case rate, adjusts fixed frequency air conditionerThe wind speed of outdoor fan, so that the wind speed of outdoor fan subtracts with the increase of indoor temperature change generated in case rateLittle.
That is, when indoor temperature change generated in case rate hour, when indoor load is heavier, control room exogenous windMachine is with higher wind speed running; In the time that indoor temperature change generated in case rate is larger, when indoor load is lighter,Control outdoor fan with lower wind speed running. Like this, according to the control of indoor temperature change generated in case rateWhen indoor fan, according to indoor temperature change generated in case rate control outdoor fan wind speed, can be in chamberWhen internal loading is lighter, make indoor and outdoor blower fan all with lower wind speed running, at indoor loadWhen heavy, make indoor and outdoor blower fan all with higher wind speed running, thereby make indoor and outdoor blower fan windSpeed matches, and then ensures that indoor and outdoor exchange capability of heat matches, and avoids unnecessary energy consumption, carriesHigh air-conditioning Energy Efficiency Ratio.
Similarly, if select indoor temperature at the variable quantity of a sense cycle as controlled quentity controlled variable,, as shown in Fig. 4 (b), the air-conditioning draught fan control method that the embodiment of the present invention provides can also comprise:
The variation a sense cycle according to indoor temperature of S108b, air-conditioning draught fan control deviceAmount, the wind speed of the outdoor fan of adjustment fixed frequency air conditioner, so that the wind speed of outdoor fan is with Indoor TemperatureDegree reduces in the increase of the variable quantity of a sense cycle.
In prior art, using the temperature approach of indoor temperature and user's design temperature as unique controlAmount, carries out coarse adjustment to the wind speed of air-conditioning draught fan, and does not consider current indoor load, because ofThis can cause the fan-out capability of air-conditioning and indoor load inconsistent, make in the time that indoor load is heavierIndoor temperature does not reach design temperature, and in the time that indoor load is lighter compressor repeatedly starting and stopping machine.And the air-conditioning draught fan control method that the embodiment of the present invention provides, unlike the prior art, no longer onlyAccording to the temperature approach of indoor temperature and user's design temperature, indoor fan is regulated, butWhen considering the temperature approach of indoor temperature and design temperature, also introduce another one parameter oneIndoor temperature change generated in case rate or the indoor temperature variable quantity in a sense cycle, due to this parameterCan reflect air-conditioning fan-out capability and indoor load relativeness, therefore the embodiment of the present invention providesAir-conditioning draught fan control method according to the temperature approach of indoor temperature and design temperature and indoor temperatureRate of change or the indoor temperature variable quantity in a sense cycle, according to preset rules control roomInner blower running, can make air-conditioning fan-out capability and indoor load be consistent, thereby ensureWhen indoor load is heavier, indoor temperature can reach design temperature, passable in the time that indoor load is lighterReduce the number of times of start/stop of compressor machine. Particularly, temperature approach is within the scope of predetermined threshold value time,In the situation that temperature approach is certain, the wind speed of control room inner blower is with indoor temperature change generated in case rate/indoorThe increasing progressively of variable quantity of temperature in a sense cycle and reducing, that is, and in indoor temperature change generated in caseWhen the variable quantity of rate/indoor temperature in a sense cycle is larger, the energy that air-conditioning produces drawsPlay degree that indoor environment temperature changes greatly time, control room inner blower is with lower wind speed running,In indoor temperature change generated in case rate or indoor temperature the variable quantity in a sense cycle hour,The energy that air-conditioning produces causes degree that indoor environment temperature changes hour, control room inner blowerWith higher wind speed running. Thus, can make air-conditioning fan-out capability and indoor load keepUnanimously, thereby ensure that indoor temperature can reach design temperature in the time that indoor load is heavier, in chamberWhen internal loading is lighter, can reduce the number of times of start/stop of compressor machine.
The air-conditioning draught fan control method that, embodiments of the invention provide can solve existing skyAir-conditioning fan-out capability and the inconsistent problem of indoor load of adjusting blower control method to exist, in chamberWhen internal loading is heavier, can ensure that indoor temperature can reach design temperature, lighter at indoor loadTime, can reduce the number of times of start/stop of compressor machine.
Embodiment bis-,
The embodiment of the present invention provides a kind of air-conditioning draught fan control device 50, is applied to fixed frequency air conditioner,Specifically as shown in Figure 5, comprising: detecting unit 501, acquiring unit 502 and control module 503.
Wherein, detecting unit 501, for detecting indoor temperature according to the first default sense cycle;
Acquiring unit 502, in the current detection moment, obtains indoor temperature and design temperatureTemperature approach and indoor temperature change generated in case rate, or, the temperature approach of indoor temperature and design temperature obtainedWith the variable quantity of indoor temperature in a sense cycle, indoor temperature change generated in case rate represents Indoor TemperatureThe intensity of variation of degree in a sense cycle;
Control module 503, for according to temperature approach and indoor temperature change generated in case rate, or, according to temperatureDifference and the indoor temperature variable quantity in a sense cycle, according to preset rules, it is fixed to controlFrequently the indoor fan of air-conditioning running.
Wherein, preset rules comprises: temperature approach is within the scope of predetermined threshold value time, in temperature approachIn certain situation, the wind speed of indoor fan with indoor temperature change generated in case rate/indoor temperature an inspectionThe increasing progressively to be of variable quantity in the survey cycle reduces trend.
In a kind of implementation of the embodiment of the present invention, acquiring unit 502 specifically can be for:
Determine the operational mode of fixed frequency air conditioner, and obtain design temperature and the chamber in current detection momentInterior temperature;
If the operational mode of fixed frequency air conditioner is heating mode, according to the Indoor Temperature in current detection momentDegree, design temperature, obtain temperature approach according to the first default formula;
If the operational mode of fixed frequency air conditioner is refrigeration mode, according to the Indoor Temperature in current detection momentDegree, design temperature, obtain temperature approach according to the second default formula.
Wherein, the first default formula is as shown in formula (1), and the second default formula is as formula (2)Shown in.
, preset rules can also comprise:
When temperature approach is greater than the first preset value, the wind speed of indoor fan is high wind speed; Temperature approachWhile being less than the second preset value, the wind speed of indoor fan is minimum wind speed.
In the another kind of implementation of the embodiment of the present invention, acquiring unit 502 specifically can be for:
Obtain design temperature and the indoor temperature in current detection moment, and according to the current detection momentIndoor temperature, design temperature, obtain temperature approach according to the first default formula.
, preset rules can also comprise:
If the operational mode of fixed frequency air conditioner is heating mode, when temperature approach is greater than the first preset value,The wind speed of indoor fan is high wind speed, when temperature approach is less than the second preset value, indoor fanWind speed is minimum wind speed;
If the operational mode of fixed frequency air conditioner is refrigeration mode, when temperature approach is greater than the first preset value,The wind speed of indoor fan is minimum wind speed, when temperature approach is less than the second preset value, indoor fanWind speed is high wind speed.
Concrete, in the air-conditioning draught fan control device 50 that the embodiment of the present invention provides, acquiring unit502 specifically can be for:
Obtain the indoor temperature in last detection moment, and according to the first default sense cycle, frontOne detects indoor temperature and the indoor temperature in current detection moment in moment, default in conjunction with the 3rdFormula, rate of temperature change in counting chamber.
Wherein, the 3rd default formula is as shown in formula (3).
Preferably, in the air-conditioning draught fan control device 50 that the embodiment of the present invention provides, detecting unit501 can also be used for:
The temperature approach of indoor temperature and design temperature is greater than the 3rd preset value and is less than the 4th to be presetAfter value, detect indoor temperature according to the second default sense cycle.
Control module 503 can also be used for:
If the temperature approach of indoor temperature and design temperature is less than the 3rd preset value, reduce indoor fanWind speed; If the temperature approach of indoor temperature and design temperature is greater than the 4th preset value, increase indoorThe wind speed of blower fan; Otherwise the wind speed of holding chamber inner blower is constant.
Further, control module 503 can also be used for:
The temperature approach of indoor temperature and design temperature is all greater than the 3rd pre-in continuous n detection momentIf value and being less than after the 5th preset value, reduces the wind speed of indoor fan; Or,
The temperature approach of indoor temperature and design temperature is all greater than the 5th pre-in continuous n detection momentIf value and being less than after the 4th preset value, increases the wind speed of indoor fan.
Wherein, the 5th preset value is less than the 4th preset value and is greater than the 3rd preset value, and n is integer,n≥2。
Further, as shown in Figure 6, the air-conditioning draught fan control dress that the embodiment of the present invention providesPut 50 and can also comprise adjustment unit 504.
Adjustment unit 504 for:
According to indoor temperature change generated in case rate, adjust the wind speed of the outdoor fan of fixed frequency air conditioner, so that chamberThe wind speed of outer blower fan reduces with the increase of indoor temperature change generated in case rate; Or,
Variable quantity according to indoor temperature in a sense cycle, adjusts the outdoor of fixed frequency air conditionerThe wind speed of blower fan, so that the change in a sense cycle with indoor temperature of the wind speed of outdoor fanThe increase of change amount and reducing.
In prior art, using the temperature approach of indoor temperature and user's design temperature as unique controlAmount, carries out coarse adjustment to the wind speed of air-conditioning draught fan, and does not consider current indoor load, because ofThis can cause the fan-out capability of air-conditioning and indoor load inconsistent, make in the time that indoor load is heavierIndoor temperature does not reach design temperature, and in the time that indoor load is lighter compressor repeatedly starting and stopping machine.And the air-conditioning draught fan control device that the embodiment of the present invention provides, unlike the prior art, no longer onlyAccording to the temperature approach of indoor temperature and user's design temperature, indoor fan is regulated, butWhen considering the temperature approach of indoor temperature and design temperature, also introduced another one parameter-Indoor temperature change generated in case rate or the indoor temperature variable quantity in a sense cycle, due to this parameterCan reflect air-conditioning fan-out capability and indoor load relativeness, therefore the embodiment of the present invention providesAir-conditioning draught fan control device according to the temperature approach of indoor temperature and design temperature and indoor temperatureRate of change or the indoor temperature variable quantity in a sense cycle, according to preset rules control roomInner blower running, can make air-conditioning fan-out capability and indoor load be consistent, thereby ensureWhen indoor load is heavier, indoor temperature can reach design temperature, passable in the time that indoor load is lighterReduce the number of times of start/stop of compressor machine. Particularly, temperature approach is within the scope of predetermined threshold value time,In the situation that temperature approach is certain, the wind speed of control room inner blower is with indoor temperature change generated in case rate/indoorThe increasing progressively of variable quantity of temperature in a sense cycle and reducing, that is, and in indoor temperature change generated in caseWhen the variable quantity of rate/indoor temperature in a sense cycle is larger, the energy that air-conditioning produces drawsPlay degree that indoor environment temperature changes greatly time, control room inner blower is with lower wind speed running,In indoor temperature change generated in case rate or indoor temperature the variable quantity in a sense cycle hour,The energy that air-conditioning produces causes degree that indoor environment temperature changes hour, control room inner blowerWith higher wind speed running. Thus, can make air-conditioning fan-out capability and indoor load keepUnanimously, thereby ensure that indoor temperature can reach design temperature in the time that indoor load is heavier, in chamberWhen internal loading is lighter, can reduce the number of times of start/stop of compressor machine.
The air-conditioning draught fan control device that, embodiments of the invention provide can solve existing skyAir-conditioning fan-out capability and the inconsistent problem of indoor load of adjusting blower control method to exist, in chamberWhen internal loading is heavier, can ensure that indoor temperature can reach design temperature, lighter at indoor loadTime, can reduce the number of times of start/stop of compressor machine.
Those skilled in the art can be well understood to, and is convenience and the letter describedClean, the device of foregoing description, is only illustrated with the division of above-mentioned each functional module, realIn the application of border, can above-mentioned functions be distributed and completed by different functional modules as required,Be divided into different functional modules by the internal structure of device, described above whole to completeOr partial function. The specific works process of system, device and the unit of foregoing description, canWith reference to the corresponding process in preceding method embodiment, do not repeat them here.
In the several embodiment that provide in the application, should be understood that disclosed systemSystem, apparatus and method, can realize by another way. For example, dress described abovePutting embodiment is only that schematically for example, the division of described module or unit, is only onePlant logic function and divide, when actual realization, can have other dividing mode, for example multiple unitOr assembly can in conjunction with or can be integrated into another system, or some features can ignore,Or do not carry out. Another point, shown or discussed coupling each other or direct-coupling or logicalIt can be by some interfaces that letter connects, and INDIRECT COUPLING or the communication connection of device or unit, canBeing electrically, machinery or other form.
The described unit as separating component explanation can be or can not be also physically to divideOpen, the parts that show as unit can be or can not be also physical locations, canBe positioned at a place, or also can be distributed on multiple NEs. Can be according to realityNeed selection some or all of unit wherein to realize the object of the present embodiment scheme.
In addition, the each functional unit in each embodiment of the present invention can be integrated in a placeIn reason unit, can be also that the independent physics of unit exists, also can two or moreUnit is integrated in a unit. Above-mentioned integrated unit both can adopt the form of hardware realExisting, also can adopt the form of SFU software functional unit to realize.
If described integrated unit is realized and as independently using the form of SFU software functional unitWhen production marketing or use, can be stored in a computer read/write memory medium. Based onSuch understanding, technical scheme of the present invention contributes to prior art in essence in other wordsPart or all or part of of this technical scheme can embody with the form of software product,This computer software product is stored in a storage medium, comprises that some instructions are in order to make onePlatform computer equipment (can be personal computer, server, or the network equipment etc.) or locateThe all or part of step of method described in each embodiment of reason device (processor) execution the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only storage (ROM,Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), the various media that can be program code stored such as magnetic disc or CD.
The above be only the specific embodiment of the present invention, but protection scope of the present invention alsoBe not limited to this, any be familiar with those skilled in the art the present invention disclose technology modelIn enclosing, can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (14)
1. an air-conditioning draught fan control method, is applied to fixed frequency air conditioner, it is characterized in that, described inMethod comprises:
Detect indoor temperature according to the first default sense cycle;
In the current detection moment, obtain temperature approach and the indoor temperature of indoor temperature and design temperatureRate of change, or, the temperature approach of indoor temperature and design temperature and indoor temperature obtained at oneVariable quantity in sense cycle, described indoor temperature change generated in case rate represents that indoor temperature is a detectionIntensity of variation in cycle;
According to described temperature approach and described indoor temperature change generated in case rate, or, according to described temperature approachWith the variable quantity of described indoor temperature in a sense cycle, according to preset rules, control instituteState the indoor fan running of fixed frequency air conditioner; Wherein, described preset rules comprises: described temperature approachWithin the scope of predetermined threshold value time, in the situation that described temperature approach is certain, described indoor fanWind speed change in a sense cycle with described indoor temperature change generated in case rate/described indoor temperatureThe increasing progressively to be of change amount reduces trend.
2. method according to claim 1, is characterized in that, described in obtain indoor temperatureTemperature approach with design temperature, comprising:
Determine the operational mode of described fixed frequency air conditioner, and obtain design temperature and current detection momentIndoor temperature;
If the operational mode of described fixed frequency air conditioner is heating mode, according to the described current detection momentIndoor temperature, described design temperature, obtain described temperature approach, institute according to the first default formulaStating the first default formula is:
ΔT＝Ts-Tai，
If the operational mode of described fixed frequency air conditioner is refrigeration mode, according to the described current detection momentIndoor temperature, described design temperature, obtain described temperature approach, institute according to the second default formulaStating the second default formula is:
ΔT＝Tai-Ts，
Wherein, Δ T represents temperature approach, and Ts represents design temperature, TaiRepresent the current detection momentIndoor temperature;
Described preset rules also comprises:
When described temperature approach is greater than the first preset value, the wind speed of described indoor fan is high wind speed;When described temperature approach is less than the second preset value, the wind speed of described indoor fan is minimum wind speed.
3. method according to claim 1, is characterized in that, described in obtain indoor temperatureTemperature approach with design temperature, comprising:
Obtain design temperature and the indoor temperature in current detection moment, and according to described current detectionThe indoor temperature in moment, described design temperature, obtain described temperature approach according to the first default formula,The described first default formula is:
ΔT＝Ts-Tai，
Wherein, Δ T represents temperature approach, and Ts represents design temperature, TaiRepresent the current detection momentIndoor temperature;
Described preset rules also comprises:
If the operational mode of described fixed frequency air conditioner is heating mode, it is first pre-that described temperature approach is greater thanIf when value, the wind speed of described indoor fan is high wind speed, and described temperature approach is less than second and presetsWhen value, the wind speed of described indoor fan is minimum wind speed;
If the operational mode of described fixed frequency air conditioner is refrigeration mode, described temperature approach is greater than describedWhen one preset value, the wind speed of described indoor fan is minimum wind speed, and described temperature approach is less than secondWhen preset value, the wind speed of described indoor fan is high wind speed.
4. according to the method described in claim 1-3 any one, it is characterized in that, described in obtainIndoor temperature change generated in case rate comprises:
Obtain the indoor temperature in last detection moment, and according to default the first sense cycle, instituteState indoor temperature and the indoor temperature in described current detection moment in last detection moment, in conjunction withThe 3rd default formula, calculates described indoor temperature change generated in case rate, and the described the 3rd default formula is:
Wherein, σ represents indoor temperature change generated in case rate, TaiRepresent the indoor temperature in current detection moment,Tai-1The indoor temperature that represents the last detection moment, T represents the first sense cycle.
5. method according to claim 1, is characterized in that, described method also comprises:
The temperature approach of indoor temperature and described design temperature is greater than the 3rd preset value and is less than the 4thAfter preset value, detect indoor temperature according to the second default sense cycle;
If the temperature approach of indoor temperature and described design temperature is less than described the 3rd preset value, reduceThe wind speed of described indoor fan; If described in the temperature approach of indoor temperature and described design temperature is greater thanThe 4th preset value, increases the wind speed of described indoor fan; Otherwise, keep the wind of described indoor fanSpeed is constant.
6. method according to claim 5, is characterized in that, described method also comprises:
The temperature approach of indoor temperature and described design temperature is all greater than institute in continuous n the detection momentState the 3rd preset value and be less than after the 5th preset value, reducing the wind speed of described indoor fan; OrPerson,
The temperature approach of indoor temperature and described design temperature is all greater than institute in continuous n the detection momentState the 5th preset value and be less than after described the 4th preset value, increasing the wind speed of described indoor fan;Wherein, described the 5th preset value is less than described the 4th preset value and is greater than described the 3rd preset value, nFor integer, n >=2.
7. method according to claim 1, is characterized in that, described method also comprises:
According to described indoor temperature change generated in case rate, adjust the wind speed of the outdoor fan of described fixed frequency air conditioner,So that the wind speed of described outdoor fan reduces with the increase of described indoor temperature change generated in case rate; Or,
Variable quantity according to described indoor temperature in a sense cycle, adjusts described fixed frequently emptyThe wind speed of outdoor fan of adjusting so that the wind speed of described outdoor fan with described indoor temperature oneThe increase of the variable quantity in individual sense cycle and reducing.
8. an air-conditioning draught fan control device, is applied to fixed frequency air conditioner, it is characterized in that, described inDevice comprises: detecting unit, acquiring unit and control module;
Described detecting unit, for detecting indoor temperature according to the first default sense cycle;
Described acquiring unit, in the current detection moment, obtains indoor temperature and design temperatureTemperature approach and indoor temperature change generated in case rate, or, obtain the temperature difference of indoor temperature and design temperatureValue and the variable quantity of indoor temperature in a sense cycle, described indoor temperature change generated in case rate representsThe intensity of variation of indoor temperature in a sense cycle;
Described control module, for according to described temperature approach and described indoor temperature change generated in case rate, orPerson, the variable quantity in a sense cycle according to described temperature approach and described indoor temperature, pressesAccording to preset rules, control the indoor fan running of described fixed frequency air conditioner; Wherein, described default ruleComprise: described temperature approach is within the scope of predetermined threshold value time, in the certain feelings of described temperature approachUnder condition, the wind speed of described indoor fan with described indoor temperature change generated in case rate/described indoor temperature oneThe increasing progressively to be of variable quantity in individual sense cycle reduces trend.
9. device according to claim 8, is characterized in that, described acquiring unit is concreteBe used for:
Determine the operational mode of described fixed frequency air conditioner, and obtain design temperature and current detection momentIndoor temperature;
If the operational mode of described fixed frequency air conditioner is heating mode, according to the described current detection momentIndoor temperature, described design temperature, obtain described temperature approach, institute according to the first default formulaStating the first default formula is:
ΔT＝Ts-Tai，
If the operational mode of described fixed frequency air conditioner is refrigeration mode, according to the described current detection momentIndoor temperature, described design temperature, obtain described temperature approach, institute according to the second default formulaStating the second default formula is:
ΔT＝Tai-Ts，
Wherein, Δ T represents temperature approach, and Ts represents design temperature, TaiRepresent the current detection momentIndoor temperature;
Described preset rules also comprises:
When described temperature approach is greater than the first preset value, the wind speed of described indoor fan is high wind speed;When described temperature approach is less than the second preset value, the wind speed of described indoor fan is minimum wind speed.
10. device according to claim 8, is characterized in that, described acquiring unit toolBody is used for:
Obtain design temperature and the indoor temperature in current detection moment, and according to described current detectionThe indoor temperature in moment, described design temperature, obtain described temperature approach according to the first default formula,The described first default formula is:
ΔT＝Ts-Tai；
Wherein, Δ T represents temperature approach, and Ts represents design temperature, TaiRepresent the current detection momentIndoor temperature;
Described preset rules also comprises:
If the operational mode of described fixed frequency air conditioner is heating mode, it is first pre-that described temperature approach is greater thanIf when value, the wind speed of described indoor fan is high wind speed, and described temperature approach is less than second and presetsWhen value, the wind speed of described indoor fan is minimum wind speed;
If the operational mode of described fixed frequency air conditioner is refrigeration mode, described temperature approach is greater than describedWhen one preset value, the wind speed of described indoor fan is minimum wind speed, and described temperature approach is less than secondWhen preset value, the wind speed of described indoor fan is high wind speed.
Device described in 11. according to Claim 8-10 any one, is characterized in that, described in obtainGet unit specifically for:
Obtain the indoor temperature in last detection moment, and according to default the first sense cycle, instituteState indoor temperature and the indoor temperature in described current detection moment in last detection moment, in conjunction withThe 3rd default formula, calculates described indoor temperature change generated in case rate, and the described the 3rd default formula is:
Wherein, σ represents indoor temperature change generated in case rate, TaiRepresent the indoor temperature in current detection moment,Tai-1The indoor temperature that represents the last detection moment, T represents the first sense cycle.
12. devices according to claim 8, is characterized in that, described detecting unit alsoBe used for:
The temperature approach of indoor temperature and described design temperature is greater than the 3rd preset value and is less than the 4thAfter preset value, detect indoor temperature according to the second default sense cycle;
Described control module also for:
If the temperature approach of indoor temperature and described design temperature is less than described the 3rd preset value, reduceThe wind speed of described indoor fan; If described in the temperature approach of indoor temperature and described design temperature is greater thanThe 4th preset value, increases the wind speed of described indoor fan; Otherwise, keep the wind of described indoor fanSpeed is constant.
13. devices according to claim 12, is characterized in that, described control module alsoBe used for:
The temperature approach of indoor temperature and described design temperature is all greater than institute in continuous n the detection momentState the 3rd preset value and be less than after the 5th preset value, reducing the wind speed of described indoor fan; OrPerson,
The temperature approach of indoor temperature and described design temperature is all greater than institute in continuous n the detection momentState the 5th preset value and be less than after described the 4th preset value, increasing the wind speed of described indoor fan;Wherein, described the 5th preset value is less than described the 4th preset value and is greater than described the 3rd preset value, nFor integer, n >=2.
14. devices according to claim 8, is characterized in that, described device also comprises:Adjustment unit;
Described adjustment unit is used for:
According to described indoor temperature change generated in case rate, adjust the wind speed of the outdoor fan of described fixed frequency air conditioner,So that the wind speed of described outdoor fan reduces with the increase of described indoor temperature change generated in case rate; Or,
Variable quantity according to described indoor temperature in a sense cycle, adjusts described fixed frequently emptyThe wind speed of outdoor fan of adjusting so that the wind speed of described outdoor fan with described indoor temperature oneThe increase of the variable quantity in individual sense cycle and reducing.
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