CN105004004A - Indoor fan control method and device - Google Patents
Indoor fan control method and device Download PDFInfo
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- CN105004004A CN105004004A CN201510416787.4A CN201510416787A CN105004004A CN 105004004 A CN105004004 A CN 105004004A CN 201510416787 A CN201510416787 A CN 201510416787A CN 105004004 A CN105004004 A CN 105004004A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an indoor fan control method. The indoor fan control method comprises the following steps that the air return temperature of an air return inlet of an indoor fan is obtained; whether the air return temperature is within the preset error range corresponding to the preset temperature or not is judged; when the air return temperature is larger than the maximum value of the preset error range, the rotation speed of the indoor fan is increased according to the preset rotation speed grade; when the refrigerant temperature variation is smaller than the minimum value of the preset error range, the rotation speed of the indoor fan is decreased according to the preset rotation speed grade. The invention further discloses an indoor fan control device. Loss of electric energy is reduced, and waste of electric energy is prevented.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly relate to indoor fan control method and device.
Background technology
Along with the development of air-conditioning technical, the application of air-conditioning has obtained universal.In the competition of air-conditioning, the energy consumption of air-conditioning has become each manufacturer's focus.As everyone knows, conventional chamber inner blower all adopts rated value to operate, and especially for ensureing indoor set heat transfer effect, the air quantity of indoor fan exports all larger surplus, therefore causes waste of energy.
Foregoing, only for auxiliary understanding technical scheme of the present invention, does not represent and admits that foregoing is prior art.
Summary of the invention
Main purpose of the present invention is to provide a kind of indoor fan control method and device, is intended to the loss reducing electric energy, prevents waste of energy.
For achieving the above object, a kind of indoor fan control method provided by the invention comprises the following steps:
Obtain the return air temperature of indoor set return air inlet;
Judge whether described return air temperature is positioned at preset error scope corresponding to preset temperature;
When described return air temperature is greater than the maximum of described preset error scope, promote the rotating speed of described indoor fan according to the rotating speed grade preset; When described refrigerant temperature variable quantity is less than the minimum of a value of described preset error scope, reduce the rotating speed of described indoor fan according to the rotating speed grade preset.
Preferably, also comprise after the described indoor fan rotating speed of adjustment:
Judge whether the duration that described indoor fan runs according to the rotating speed grade after adjustment is greater than preset value;
If so, the step of the return air temperature of described acquisition indoor set return air inlet is then performed.
Preferably, described indoor fan control method also comprises:
Obtain current outdoor temperature;
Search corresponding rotating speed grade according to described outdoor temperature, and the rotating speed grade of searching acquisition is set as described default rotating speed grade.
Preferably, the rotating speed that the described rotating speed grade according to presetting promotes described indoor fan comprises:
Maximum according to described return air temperature and described preset error scope determines the quantity promoting rotating speed grade;
Control described indoor fan according to the quantity of current rotating speed grade and described lifting rotating speed grade and carry out the lifting of rotating speed grade.
Preferably, the rotating speed that the described rotating speed grade according to presetting reduces described indoor fan comprises:
Minimum of a value according to described return air temperature and described preset error scope determines the quantity reducing rotating speed grade;
Control described indoor fan according to the quantity of current rotating speed grade and described reduction rotating speed grade and carry out the reduction of rotating speed grade.
In addition, for achieving the above object, the present invention also provides a kind of indoor fan control device to comprise:
First acquisition module, for obtaining the return air temperature of indoor set return air inlet;
First judge module, for judging whether described return air temperature is positioned at preset error scope corresponding to preset temperature;
Adjusting module, during for being greater than the maximum of described preset error scope when described return air temperature, promotes the rotating speed of described indoor fan according to the rotating speed grade preset; When described refrigerant temperature variable quantity is less than the minimum of a value of described preset error scope, reduce the rotating speed of described indoor fan according to the rotating speed grade preset.
Preferably, described indoor fan control device also comprises:
Second judge module, for judging whether the duration that described indoor fan runs according to the rotating speed grade after adjustment is greater than preset value; When the described duration is greater than preset value, trigger the return air temperature that described first acquisition module obtains indoor set return air inlet.
Preferably, described indoor fan control device also comprises:
Second acquisition module, for obtaining current outdoor temperature;
Enquiry module, for searching corresponding rotating speed grade according to described outdoor temperature, and is set as described default rotating speed grade by the rotating speed grade of searching acquisition.
Preferably, described adjusting module comprises:
First analytic unit, for determining according to the maximum of described return air temperature and described preset error scope the quantity promoting rotating speed grade;
First adjustment unit, carries out the lifting of rotating speed grade for controlling described indoor fan according to the quantity of current rotating speed grade and described lifting rotating speed grade.
Preferably, described adjusting module comprises:
Second analytic unit, for determining according to the minimum of a value of described return air temperature and described preset error scope the quantity reducing rotating speed grade;
Second adjustment unit, carries out the reduction of rotating speed grade for controlling described indoor fan according to the quantity of current rotating speed grade and described reduction rotating speed grade.
By obtaining the return air temperature of indoor set return air inlet in the embodiment of the present invention; Judge whether described return air temperature is positioned at preset error scope corresponding to preset temperature; When described return air temperature is greater than the maximum of described preset error scope, promote the rotating speed of described indoor fan according to the rotating speed grade preset; When described refrigerant temperature variable quantity is less than the minimum of a value of described preset error scope, reduce the rotating speed of described indoor fan according to the rotating speed grade preset.Because indoor fan control method provided by the invention and device achieve according to the return air temperature of indoor set return air inlet automatically to the adjustment of rotational speed of indoor fan, thus reduce the loss of electric energy, prevent waste of energy.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of indoor fan control method first embodiment of the present invention;
Fig. 2 is the schematic flow sheet of indoor fan control method second embodiment of the present invention;
Fig. 3 is the schematic flow sheet of indoor fan control method the 3rd embodiment of the present invention;
Fig. 4 is the refinement schematic flow sheet promoting rotating speed grade in indoor fan control method the 4th embodiment of the present invention;
Fig. 5 is the refinement schematic flow sheet reducing rotating speed grade in indoor fan control method the 5th embodiment of the present invention;
Fig. 6 is the functional module structure schematic diagram of indoor fan control device first embodiment of the present invention;
Fig. 7 is the functional module structure schematic diagram of indoor fan control device second embodiment of the present invention;
Fig. 8 is the functional module structure schematic diagram of indoor fan control device the 3rd embodiment of the present invention;
Fig. 9 is the refinement functional module structure schematic diagram of adjusting module in indoor fan control device the 4th embodiment of the present invention;
Figure 10 is the refinement functional module structure schematic diagram of adjusting module in indoor fan control device the 5th embodiment of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of indoor fan control method, with reference to Fig. 1, in indoor fan control method first embodiment of the present invention, this indoor fan control method comprises:
Step S10, obtains the return air temperature of indoor set return air inlet;
The indoor fan control method that the embodiment of the present invention provides is mainly used in air-conditioning system, for controlling indoor fan, this air-conditioning system can, for only comprising the Air Conditioning System of an indoor set, also can be the multi-online air-conditioning system comprising multiple indoor set.In multiple on-line system, each indoor set all can independently control, and the degree of superheat of refrigerant when each indoor set carries out heat exchange does not all interfere with each other.Particularly, can at the return air inlet place set temperature sensor of indoor set for detecting above-mentioned return air temperature.
Step S20, judges whether described return air temperature is positioned at preset error scope corresponding to preset temperature; If so, then terminate, if not, then perform step S30;
Step S30, when described return air temperature is greater than the maximum of described preset error scope, promotes the rotating speed of described indoor fan according to the rotating speed grade preset; When described refrigerant temperature variable quantity is less than the minimum of a value of described preset error scope, reduce the rotating speed of described indoor fan according to the rotating speed grade preset.
In the present embodiment, the size of above-mentioned preset temperature can be arranged according to actual needs, concrete, and above-mentioned preset error scope is that preset temperature and preset error value carry out calculating; Should be noted that the non-definite value of above-mentioned preset temperature, user's setting can be comprised, indoor set self adaptation sets in real time.Such as preset temperature is a, and preset error value is b, then above-mentioned error range is [a-b, a+b], and the maximum of above-mentioned preset error scope is a+b, the minimum of a value a-b of above-mentioned preset error scope.Such as, getting above-mentioned return air temperature is T1, as a-b≤T1≤a+b, then determines that return air temperature is positioned at preset error scope corresponding to preset temperature; Work as T1<a-b, then reduce the rotating speed of described indoor fan according to the rotating speed grade preset; As T1 > a+b, then promote the rotating speed of described indoor fan according to the rotating speed grade preset.
In the present embodiment, the value of above-mentioned default rotating speed grade can be arranged according to actual needs, such as, in the present embodiment, above-mentioned preset rotation speed grade comprises the different rotating speed grade of A, B, C, D, E, F, G seven, wherein A<B<C<DLEssT.LTss T.LTE<F<G.It should be noted that when described return air temperature is greater than the maximum of described error range, the quantity of lifting or reduction rotating speed grade can adjust according to preset rules, makes detailed description to promote or to reduce a rotating speed grade at every turn:
If the current rotating speed grade of indoor fan is D, when return air temperature is less than the minimum of a value in above-mentioned error range, be then C by the rotating speed level adjustment of indoor fan.When control room inner blower reaches above-mentioned preset value with the duration that rotating speed grade C runs, then again obtain above-mentioned return air temperature, when return air temperature is still less than the minimum of a value of above-mentioned error range, then continue the grade reducing indoor fan, until return air temperature is positioned at above-mentioned error range.Be understandable that, when the rotating speed grade that above-mentioned indoor fan is current is A, refrigerant temperature variable quantity is still less than the minimum of a value of above-mentioned error range, then no longer adjust, and still runs with rotating speed grade A.
If the current rotating speed grade of indoor fan is D, when return air temperature is greater than the maximum of above-mentioned error range, be then E by the rotating speed level adjustment of indoor fan.When control room inner blower reaches above-mentioned preset value with the duration that rotating speed grade E runs, then again obtain above-mentioned return air temperature, when return air temperature is still greater than the maximum of above-mentioned error range, then continue the grade promoting indoor fan, until return air temperature is positioned at above-mentioned error range.Be understandable that, when the rotating speed grade that above-mentioned indoor fan is current is G, return air temperature is still greater than the maximum of above-mentioned error range, then no longer adjust, and still runs with rotating speed grade G.
By obtaining the return air temperature of indoor set return air inlet in the embodiment of the present invention; Judge whether described return air temperature is positioned at preset error scope corresponding to preset temperature; When described return air temperature is greater than the maximum of described preset error scope, promote the rotating speed of described indoor fan according to the rotating speed grade preset; When described refrigerant temperature variable quantity is less than the minimum of a value of described preset error scope, reduce the rotating speed of described indoor fan according to the rotating speed grade preset.Because indoor fan control method provided by the invention achieves according to the return air temperature of indoor set return air inlet automatically to the adjustment of rotational speed of indoor fan, thus reduce the loss of electric energy, prevent waste of energy.
Further, with reference to Fig. 2, based on indoor fan control method first embodiment of the present invention, in indoor fan control method second embodiment of the present invention, also comprise after above-mentioned steps S30:
Step S40, judges whether the duration that described indoor fan runs according to the rotating speed grade after adjustment is greater than preset value;
In the present embodiment, adjustment described indoor fan rotating speed after, indoor fan by according to adjustment after rotating speed continuous service.In the process run, the duration whether above-mentioned preset value that real-time judge indoor fan runs according to the rotating speed after adjustment, when the duration is greater than preset value, to again perform the return air temperature step obtaining indoor set return air inlet, to enter adjustment next time, until above-mentioned return air temperature is positioned at preset error scope, thus indoor fan is made to reach preferably rotating speed.
Further, with reference to Fig. 3, based on indoor fan control method first embodiment of the present invention, in indoor fan control method the 3rd embodiment of the present invention, above-mentioned indoor fan control method also comprises:
Step S50, obtains current outdoor temperature;
Step S60, searches corresponding rotating speed grade according to described outdoor temperature, and the rotating speed grade of searching acquisition is set as described default rotating speed grade.
Be understandable that, the setting for rotating speed grade can according to arranging according to actual needs, and such as, when air-conditioning heating runs, correspondence is provided with a rotating speed grade; A rotating speed grade is provided with in refrigerating operaton correspondence.In addition because outdoor temperature is in continuous change, different rotating speed grades can be set to ensure that above-mentioned return air temperature is positioned at above-mentioned preset error scope according to different outdoor temperatures, make the rotating speed of indoor fan reach preferable states.Such as under the state of heating operation, when getting current outdoor temperature and being 10 DEG C, then the rotating speed grade of inquiring about acquisition is A, B, C, D, E, F; Be 0 DEG C when getting current outdoor temperature, then the rotating speed grade of inquiring about acquisition is B, C, D, E, F, G.It should be noted that can on air-conditioner outdoor unit set temperature sensor, to detect the temperature value of current outdoor.
Further, be understandable that, when above-mentioned return air temperature is not positioned at preset error scope, the adjustment mode reducing the rotating speed of indoor fan can be consistent with the adjustment mode of the rotating speed promoting indoor fan, also can be inconsistent.Below the mode of adjustment of rotational speed is described in detail:
Further, with reference to Fig. 4, based on indoor fan control method first embodiment of the present invention to the 3rd embodiment, in indoor fan control method the 4th embodiment of the present invention, the rotating speed that the above-mentioned rotating speed grade according to presetting promotes described indoor fan comprises:
Step S31, the maximum according to described return air temperature and described preset error scope determines the quantity promoting rotating speed grade;
Step S32, controls described indoor fan according to the quantity of current rotating speed grade and described lifting rotating speed grade and carries out the lifting of rotating speed grade.
In the present embodiment, the difference of the maximum of above-mentioned return air temperature and described preset error scope is larger, then represent the rotating speed grade that indoor fan is current and finally need the gap of the rotating speed grade adjusted larger.Difference such as between return air temperature and the maximum of described preset error scope is greater than 5 DEG C, then need adjustment two rotating speed grades.If current rotating speed grade is D, then the rotating speed grade after adjustment is F.Due in the present embodiment, add comparing of the maximum of above-mentioned return air temperature and described preset error scope, thus the number of times of adjustment can be reduced.
Further, with reference to Fig. 5, based on indoor fan control method first embodiment of the present invention to the 3rd embodiment, in indoor fan control method the 5th embodiment of the present invention, the rotating speed that the above-mentioned rotating speed grade according to presetting reduces described indoor fan comprises:
Step S33, the minimum of a value according to described return air temperature and described preset error scope determines the quantity reducing rotating speed grade;
Step S34, controls described indoor fan according to the quantity of current rotating speed grade and described reduction rotating speed grade and carries out the reduction of rotating speed grade.
In the present embodiment, the difference of the minimum of a value of above-mentioned return air temperature and described preset error scope is larger, then represent the rotating speed grade that indoor fan is current and finally need the gap of the rotating speed grade adjusted larger.Difference such as between return air temperature and the minimum of a value of described preset error scope is greater than 5 DEG C, then need adjustment two rotating speed grades.If current rotating speed grade is D, then the rotating speed grade after adjustment is B.Due in the present embodiment, add comparing of the maximum of above-mentioned return air temperature and described preset error scope, thus the number of times of adjustment can be reduced.
The present invention also provides a kind of indoor fan control device, and with reference to Fig. 6, in indoor fan control device first embodiment of the present invention, this indoor fan control device comprises:
First acquisition module 10, for obtaining the return air temperature of indoor set return air inlet;
The indoor fan control device that the embodiment of the present invention provides is mainly used in air-conditioning system, for controlling indoor fan, this air-conditioning system can, for only comprising the Air Conditioning System of an indoor set, also can be the multi-online air-conditioning system comprising multiple indoor set.In multiple on-line system, each indoor set all can independently control, and the degree of superheat of refrigerant when each indoor set carries out heat exchange does not all interfere with each other.Particularly, can at the return air inlet place set temperature sensor of indoor set for detecting above-mentioned return air temperature.
First judge module 20, for judging whether described return air temperature is positioned at preset error scope corresponding to preset temperature;
Adjusting module 30, during for being greater than the maximum of described preset error scope when described return air temperature, promotes the rotating speed of described indoor fan according to the rotating speed grade preset; When described refrigerant temperature variable quantity is less than the minimum of a value of described preset error scope, reduce the rotating speed of described indoor fan according to the rotating speed grade preset.
In the present embodiment, the size of above-mentioned preset temperature can be arranged according to actual needs, concrete, and above-mentioned preset error scope is that preset temperature and preset error value carry out calculating; Should be noted that the non-definite value of above-mentioned preset temperature, user's setting can be comprised, indoor set self adaptation sets in real time.Such as preset temperature is a, and preset error value is b, then above-mentioned error range is [a-b, a+b], and the maximum of above-mentioned preset error scope is a+b, the minimum of a value a-b of above-mentioned preset error scope.Such as, getting above-mentioned return air temperature is T1, as a-b≤T1≤a+b, then determines that return air temperature is positioned at preset error scope corresponding to preset temperature; Work as T1<a-b, then reduce the rotating speed of described indoor fan according to the rotating speed grade preset; As T1 > a+b, then promote the rotating speed of described indoor fan according to the rotating speed grade preset.
In the present embodiment, the value of above-mentioned default rotating speed grade can be arranged according to actual needs, such as, in the present embodiment, above-mentioned preset rotation speed grade comprises the different rotating speed grade of A, B, C, D, E, F, G seven, wherein A<B<C<DLEssT.LTss T.LTE<F<G.It should be noted that when described return air temperature is greater than the maximum of described error range, the quantity of lifting or reduction rotating speed grade can adjust according to preset rules, makes detailed description to promote or to reduce a rotating speed grade at every turn:
If the current rotating speed grade of indoor fan is D, when return air temperature is less than the minimum of a value in above-mentioned error range, be then C by the rotating speed level adjustment of indoor fan.When control room inner blower reaches above-mentioned preset value with the duration that rotating speed grade C runs, then again obtain above-mentioned return air temperature, when return air temperature is still less than the minimum of a value of above-mentioned error range, then continue the grade reducing indoor fan, until return air temperature is positioned at above-mentioned error range.Be understandable that, when the rotating speed grade that above-mentioned indoor fan is current is A, refrigerant temperature variable quantity is still less than the minimum of a value of above-mentioned error range, then no longer adjust, and still runs with rotating speed grade A.
If the current rotating speed grade of indoor fan is D, when return air temperature is greater than the maximum of above-mentioned error range, be then E by the rotating speed level adjustment of indoor fan.When control room inner blower reaches above-mentioned preset value with the duration that rotating speed grade E runs, then again obtain above-mentioned return air temperature, when return air temperature is still greater than the maximum of above-mentioned error range, then continue the grade promoting indoor fan, until return air temperature is positioned at above-mentioned error range.Be understandable that, when the rotating speed grade that above-mentioned indoor fan is current is G, return air temperature is still greater than the maximum of above-mentioned error range, then no longer adjust, and still runs with rotating speed grade G.
By obtaining the return air temperature of indoor set return air inlet in the embodiment of the present invention; Judge whether described return air temperature is positioned at preset error scope corresponding to preset temperature; When described return air temperature is greater than the maximum of described preset error scope, promote the rotating speed of described indoor fan according to the rotating speed grade preset; When described refrigerant temperature variable quantity is less than the minimum of a value of described preset error scope, reduce the rotating speed of described indoor fan according to the rotating speed grade preset.Because indoor fan control device provided by the invention achieves according to the return air temperature of indoor set return air inlet automatically to the adjustment of rotational speed of indoor fan, thus reduce the loss of electric energy, prevent waste of energy.
Further, with reference to Fig. 7, based on indoor fan control device first embodiment of the present invention, in indoor fan control device second embodiment of the present invention, above-mentioned indoor fan control device also comprises:
Second judge module 40, for judging whether the duration that described indoor fan runs according to the rotating speed grade after adjustment is greater than preset value; When the described duration is greater than preset value, trigger the return air temperature that described first acquisition module obtains indoor set return air inlet.
In the present embodiment, adjustment described indoor fan rotating speed after, indoor fan by according to adjustment after rotating speed continuous service.In the process run, the duration whether above-mentioned preset value that real-time judge indoor fan runs according to the rotating speed after adjustment, when the duration is greater than preset value, operate again performing by the first acquisition module 10 return air temperature obtaining indoor set return air inlet, to enter adjustment next time, until above-mentioned return air temperature is positioned at preset error scope, thus indoor fan is made to reach preferably rotating speed.
Further, with reference to Fig. 8, based on indoor fan control device first embodiment of the present invention, in indoor fan control device the 3rd embodiment of the present invention, above-mentioned indoor fan control device also comprises:
Second acquisition module 50, for obtaining current outdoor temperature;
Enquiry module 60, for searching corresponding rotating speed grade according to described outdoor temperature, and is set as described default rotating speed grade by the rotating speed grade of searching acquisition.
Be understandable that, the setting for rotating speed grade can according to arranging according to actual needs, and such as, when air-conditioning heating runs, correspondence is provided with a rotating speed grade; A rotating speed grade is provided with in refrigerating operaton correspondence.In addition because outdoor temperature is in continuous change, different rotating speed grades can be set to ensure that above-mentioned return air temperature is positioned at above-mentioned preset error scope according to different outdoor temperatures, make the rotating speed of indoor fan reach preferable states.Such as under the state of heating operation, when getting current outdoor temperature and being 10 DEG C, then the rotating speed grade of inquiring about acquisition is A, B, C, D, E, F; Be 0 DEG C when getting current outdoor temperature, then the rotating speed grade of inquiring about acquisition is B, C, D, E, F, G.It should be noted that can on air-conditioner outdoor unit set temperature sensor, to detect the temperature value of current outdoor.
Further, be understandable that, when above-mentioned return air temperature is not positioned at preset error scope, the adjustment mode reducing the rotating speed of indoor fan can be consistent with the adjustment mode of the rotating speed promoting indoor fan, also can be inconsistent.Below the mode of adjustment of rotational speed is described in detail:
Further, with reference to Fig. 9, based on indoor fan control device first embodiment of the present invention to the 3rd embodiment, in indoor fan control device the 4th embodiment of the present invention, above-mentioned adjusting module 30 comprises:
First analytic unit 31, for determining according to the maximum of described return air temperature and described preset error scope the quantity promoting rotating speed grade;
First adjustment unit 32, carries out the lifting of rotating speed grade for controlling described indoor fan according to the quantity of current rotating speed grade and described lifting rotating speed grade.
In the present embodiment, the difference of the maximum of above-mentioned return air temperature and described preset error scope is larger, then represent the rotating speed grade that indoor fan is current and finally need the gap of the rotating speed grade adjusted larger.Difference such as between return air temperature and the maximum of described preset error scope is greater than 5 DEG C, then need adjustment two rotating speed grades.If current rotating speed grade is D, then the rotating speed grade after adjustment is F.Due in the present embodiment, add comparing of the maximum of above-mentioned return air temperature and described preset error scope, thus the number of times of adjustment can be reduced.
Further, with reference to Figure 10, based on indoor fan control device first embodiment of the present invention to the 3rd embodiment, in indoor fan control device the 5th embodiment of the present invention, above-mentioned adjusting module 30 comprises:
Second analytic unit 33, for determining according to the minimum of a value of described return air temperature and described preset error scope the quantity reducing rotating speed grade;
Second adjustment unit 34, carries out the reduction of rotating speed grade for controlling described indoor fan according to the quantity of current rotating speed grade and described reduction rotating speed grade.
In the present embodiment, the difference of the minimum of a value of above-mentioned return air temperature and described preset error scope is larger, then represent the rotating speed grade that indoor fan is current and finally need the gap of the rotating speed grade adjusted larger.Difference such as between return air temperature and the minimum of a value of described preset error scope is greater than 5 DEG C, then need adjustment two rotating speed grades.If current rotating speed grade is D, then the rotating speed grade after adjustment is B.Due in the present embodiment, add comparing of the maximum of above-mentioned return air temperature and described preset error scope, thus the number of times of adjustment can be reduced.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. an indoor fan control method, is characterized in that, described indoor fan control method comprises the following steps:
Obtain the return air temperature of indoor set return air inlet;
Judge whether described return air temperature is positioned at preset error scope corresponding to preset temperature;
When described return air temperature is greater than the maximum of described preset error scope, promote the rotating speed of described indoor fan according to the rotating speed grade preset; When described refrigerant temperature variable quantity is less than the minimum of a value of described preset error scope, reduce the rotating speed of described indoor fan according to the rotating speed grade preset.
2. indoor fan control method as claimed in claim 1, is characterized in that, also comprises after the described indoor fan rotating speed of adjustment:
Judge whether the duration that described indoor fan runs according to the rotating speed grade after adjustment is greater than preset value;
If so, the step of the return air temperature of described acquisition indoor set return air inlet is then performed.
3. indoor fan control method as claimed in claim 1, it is characterized in that, described indoor fan control method also comprises:
Obtain current outdoor temperature;
Search corresponding rotating speed grade according to described outdoor temperature, and the rotating speed grade of searching acquisition is set as described default rotating speed grade.
4. the indoor fan control method as described in any one of claims 1 to 3, is characterized in that, the rotating speed that the described rotating speed grade according to presetting promotes described indoor fan comprises:
Maximum according to described return air temperature and described preset error scope determines the quantity promoting rotating speed grade;
Control described indoor fan according to the quantity of current rotating speed grade and described lifting rotating speed grade and carry out the lifting of rotating speed grade.
5. the indoor fan control method as described in any one of claims 1 to 3, is characterized in that, the rotating speed that the described rotating speed grade according to presetting reduces described indoor fan comprises:
Minimum of a value according to described return air temperature and described preset error scope determines the quantity reducing rotating speed grade;
Control described indoor fan according to the quantity of current rotating speed grade and described reduction rotating speed grade and carry out the reduction of rotating speed grade.
6. an indoor fan control device, is characterized in that, described indoor fan control device comprises:
First acquisition module, for obtaining the return air temperature of indoor set return air inlet;
First judge module, for judging whether described return air temperature is positioned at preset error scope corresponding to preset temperature;
Adjusting module, during for being greater than the maximum of described preset error scope when described return air temperature, promotes the rotating speed of described indoor fan according to the rotating speed grade preset; When described refrigerant temperature variable quantity is less than the minimum of a value of described preset error scope, reduce the rotating speed of described indoor fan according to the rotating speed grade preset.
7. indoor fan control device as claimed in claim 6, it is characterized in that, described indoor fan control device also comprises:
Second judge module, for judging whether the duration that described indoor fan runs according to the rotating speed grade after adjustment is greater than preset value; When the described duration is greater than preset value, trigger the return air temperature that described first acquisition module obtains indoor set return air inlet.
8. indoor fan control device as claimed in claim 7, it is characterized in that, described indoor fan control device also comprises:
Second acquisition module, for obtaining current outdoor temperature;
Enquiry module, for searching corresponding rotating speed grade according to described outdoor temperature, and is set as described default rotating speed grade by the rotating speed grade of searching acquisition.
9. the indoor fan control device according to any one of claim 6 to 8, is characterized in that, described adjusting module comprises:
First analytic unit, for determining according to the maximum of described return air temperature and described preset error scope the quantity promoting rotating speed grade;
First adjustment unit, carries out the lifting of rotating speed grade for controlling described indoor fan according to the quantity of current rotating speed grade and described lifting rotating speed grade.
10. the indoor fan control device according to any one of claim 6 to 8, is characterized in that, described adjusting module comprises:
Second analytic unit, for determining according to the minimum of a value of described return air temperature and described preset error scope the quantity reducing rotating speed grade;
Second adjustment unit, carries out the reduction of rotating speed grade for controlling described indoor fan according to the quantity of current rotating speed grade and described reduction rotating speed grade.
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