CN104990236A - Indoor draught fan control method and device - Google Patents
Indoor draught fan control method and device Download PDFInfo
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- CN104990236A CN104990236A CN201510416902.8A CN201510416902A CN104990236A CN 104990236 A CN104990236 A CN 104990236A CN 201510416902 A CN201510416902 A CN 201510416902A CN 104990236 A CN104990236 A CN 104990236A
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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
- F24F11/30—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
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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
- F24F2110/12—Temperature of the outside air
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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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 draught fan control method. The indoor draught fan control method includes the following steps that S1, the refrigerant temperature variable quantity generated when refrigerants perform heat exchange in an indoor unit is acquired, and the refrigerant temperature variable quantity comprises the superheat degree or the supercooling degree; S2, whether the refrigerant temperature variable quantity is within a preset error range of preset target values or not is judged; S3, the rotation speed of a draught fan is regulated according to the judgment result of the second step, wherein regulation is conducted through the substeps that when the refrigerant temperature variable quantity is larger than the maximum value of the preset error range, the rotation speed of the indoor draught fan is decreased; and when the refrigerant temperature variable quantity is smaller than the minimum value of the preset error range, the rotation speed of the indoor draught fan is increased. The invention further discloses an indoor draught fan control device. By means of the indoor draught fan control method and device, electric energy consumption is reduced, and electric energy waste 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:
S1: obtain the refrigerant temperature variable quantity produced when refrigerant carries out heat exchange in indoor set, described refrigerant temperature variable quantity comprises the degree of superheat or degree of supercooling;
S2: judge whether described refrigerant temperature variable quantity is positioned at the preset error scope of predetermined target value;
S3: according to the judged result adjustment rotation speed of fan of S2 step, comprising: when described refrigerant temperature variable quantity is greater than the maximum of described preset error scope, reduce the rotating speed of described indoor fan; When described refrigerant temperature variable quantity is less than the minimum of a value of described preset error scope, promote the rotating speed of described indoor fan.
Preferably, also comprise after above-mentioned steps S3:
Judge whether the duration that described indoor fan runs according to the rotating speed after adjustment is greater than preset value;
If so, the step of the refrigerant temperature variable quantity produced when described acquisition refrigerant carries out heat exchange in indoor set is then performed.
Preferably, described when refrigerant temperature variable quantity is greater than the maximum of described error range, reduce the rotating speed of described indoor fan, comprising:
When described refrigerant temperature variable quantity is greater than the maximum of described error range, reduce the rotating speed of described indoor fan according to the rotating speed grade preset.
Preferably, described when refrigerant temperature variable quantity is less than the minimum of a value of described error range, promote the rotating speed of described indoor fan, comprising:
When described refrigerant temperature variable quantity is less than the minimum of a value of described error range, promote the rotating speed of described indoor fan according to the rotating speed grade preset.
Preferably, 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.
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 refrigerant temperature variable quantity produced when refrigerant carries out heat exchange in indoor set, described refrigerant temperature variable quantity comprises the degree of superheat or degree of supercooling;
First judge module, for judging whether described refrigerant temperature variable quantity is positioned at the preset error scope of predetermined target value;
Adjusting module, for when described refrigerant temperature variable quantity is greater than the maximum of described preset error scope, reduces the rotating speed of described indoor fan; When described refrigerant temperature variable quantity is less than the minimum of a value of described preset error scope, promote the rotating speed of described indoor fan.
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 after adjustment is greater than preset value; When the described duration is greater than preset value, triggers described first acquisition module and obtain the refrigerant temperature variable quantity produced when refrigerant carries out heat exchange in indoor set.
Preferably, described adjusting module comprises:
First adjustment unit, for when described refrigerant temperature variable quantity is greater than the maximum of described error range, reduces the rotating speed of described indoor fan according to the rotating speed grade preset.
Preferably, described adjusting module comprises:
Second adjustment unit, for when described refrigerant temperature variable quantity is less than the minimum of a value of described error range, promotes the rotating speed of described indoor fan according to the rotating speed grade preset.
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.
The refrigerant temperature variable quantity produced time in the embodiment of the present invention by obtaining refrigerant and carry out heat exchange in indoor set; Then judge whether described refrigerant temperature variable quantity is positioned at the preset error scope of predetermined target value; When described refrigerant temperature variable quantity is greater than the maximum of described preset error scope, reduce the rotating speed of described indoor fan; When described refrigerant temperature variable quantity is less than the minimum of a value of described preset error scope, promote the rotating speed of described indoor fan.Because indoor fan control method provided by the invention and device achieve the degree of superheat and degree of supercooling that produce when refrigerant carries out heat exchange in indoor set 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 schematic flow sheet of indoor fan control method the 4th embodiment of the present invention;
Fig. 5 is the functional module structure schematic diagram of indoor fan control device first embodiment of the present invention;
Fig. 6 is the functional module structure schematic diagram of indoor fan control device second embodiment of the present invention;
Fig. 7 is the refinement functional module structure schematic diagram of adjusting module in indoor fan control device the 3rd embodiment of the present invention;
Fig. 8 is the functional module structure schematic diagram of indoor fan control device the 4th 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, obtain the refrigerant temperature variable quantity produced when refrigerant carries out heat exchange in indoor set, described refrigerant temperature variable quantity comprises the degree of superheat or degree of supercooling;
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, when air-conditioning heating runs, get the degree of supercooling that the refrigerant temperature variable quantity produced when refrigerant carries out heat exchange in indoor set is refrigerant generation when indoor set carries out heat exchange; When air conditioner refrigerating runs, get the degree of superheat that the refrigerant temperature variable quantity produced when refrigerant carries out heat exchange in indoor set is refrigerant generation when indoor set carries out heat exchange.
The obtain manner of the above-mentioned degree of superheat and degree of supercooling can be arranged according to actual needs, such as, by coiler temperature or pressure in sensing chamber, then can calculate.Be described in detail in the mode of detected temperatures below.Can first at coil inlet and the equal set temperature sensor of coil outlets to detect the temperature of coil inlet and coil outlet refrigerant; Then every the temperature value that prefixed time interval acquisition temperature sensor detects, with the difference of the temperature Tin of the temperature Tout and coil inlet place refrigerant that obtain coil outlet refrigerant.When air-conditioning heating runs, the temperature Tout that can deduct coil outlet refrigerant according to the temperature Tin of coil inlet place refrigerant obtains degree of supercooling SCt (SCt=Tin-Tout); When air conditioner refrigerating runs, the temperature Tin that can deduct coil inlet place refrigerant according to the temperature Tout of coil outlet refrigerant obtains degree of superheat SHt (SHt=Tout-Tin).In following embodiment, run with air conditioner refrigerating and make detailed description, namely in following embodiment, above-mentioned refrigerant temperature variable quantity is that the degree of superheat is described.
Step S20, judges whether described refrigerant temperature variable quantity is positioned at the preset error scope of predetermined target value; If so, then terminate, if not, then perform step S30;
Step S30, when refrigerant temperature variable quantity is greater than the maximum of described preset error scope, reduces the rotating speed of indoor fan; When refrigerant temperature variable quantity is less than the minimum of a value of preset error scope, promote the rotating speed of indoor fan.
In the present embodiment, the size of above-mentioned desired value and error amount can carry out arranging that (wherein error amount is divided into upper limit error amount and lower limit error amount according to actual needs, if upper and lower limit error amount is identical, then can represent as error range is SHS-a ~ SHS+a; If upper and lower limit error amount is different, then can represent as error range is SHS-c ~ SHS+b).Such as above-mentioned desired value is target superheat degree SHS, and error amount is a, and getting the degree of superheat produced when refrigerant carries out heat exchange in indoor set is SHt; Then above-mentioned preset error scope is SHS-a ~ SHS+a, and the maximum of preset error scope is SHS+a, and the minimum of a value of preset error scope is SHS-a.As SHS-a≤SHt≤SHS+a, then determine that described refrigerant temperature variable quantity is positioned at the preset error scope of predetermined target value, now will the wind speed of indoor set not adjusted; As SHt < SHS-a, then promote the rotating speed of indoor fan; As SHt > SHS+a, then reduce the rotating speed of indoor fan.
The refrigerant temperature variable quantity produced time in the embodiment of the present invention by obtaining refrigerant and carry out heat exchange in indoor set; Then judge whether described refrigerant temperature variable quantity is positioned at the preset error scope of predetermined target value; When described refrigerant temperature variable quantity is greater than the maximum of described preset error scope, reduce the rotating speed of described indoor fan; When described refrigerant temperature variable quantity is less than the minimum of a value of described preset error scope, promote the rotating speed of described indoor fan.Because indoor fan control method provided by the invention achieves the degree of superheat and degree of supercooling that produce when refrigerant carries out heat exchange in indoor set 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 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 refrigerant temperature variable quantity step obtaining and produce when refrigerant carries out heat exchange in indoor set, to enter adjustment next time, until above-mentioned refrigerant temperature variable quantity is positioned at the preset error scope of predetermined target value, thus indoor fan is made to reach preferably rotating speed.
Be understandable that, when above-mentioned refrigerant temperature variable quantity is not positioned at the preset error scope of predetermined target value, can arrange according to actual needs the adjustment mode of indoor fan, such as, gear can be adopted to adjust, the mode of stepless speed regulation also can be adopted to adjust.It should be noted that the adjustment mode of the rotating speed reducing indoor fan can be consistent with the adjustment mode of the rotating speed promoting indoor fan, also can be inconsistent.In indoor fan control method the 3rd embodiment of the present invention, be that consistent situation makes detailed description in the adjustment mode reducing the rotating speed of indoor fan with the adjustment mode of the rotating speed promoting indoor fan:
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 when refrigerant temperature variable quantity is greater than the maximum of described error range, reduce the rotating speed of described indoor fan, comprising:
When described refrigerant temperature variable quantity is greater than the maximum of described error range, reduce the rotating speed of described indoor fan according to the rotating speed grade preset.
Above-mentioned when refrigerant temperature variable quantity is less than the minimum of a value of described error range, promote the rotating speed of described indoor fan, comprising:
When described refrigerant temperature variable quantity is less than the minimum of a value of described error range, 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.Should be noted that, when described refrigerant temperature variable quantity is greater than the maximum of described error range, the grade amount reduced can adjust according to preset rules, as can be reduced a rotating speed grade at every turn, also can select the quantity downgraded according to the difference size between refrigerant temperature variable quantity and the maximum of error range, be positioned at error range to make refrigerant temperature variable quantity as early as possible.When described refrigerant temperature variable quantity is less than the minimum of a value of described error range, the grade amount promoted can adjust according to preset rules, as can be pointed out a rotating speed grade at every turn, also can select the quantity promoting grade according to the difference size between refrigerant temperature variable quantity and the minimum of a value of error range, be positioned at error range to make refrigerant temperature variable quantity as early as possible.Detailed description is made to adjust a rotating speed grade at every turn:
If the current rotating speed grade of indoor fan is D, when refrigerant temperature variable quantity is greater than the maximum of 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 refrigerant temperature variable quantity, when refrigerant temperature variable quantity is still greater than the maximum of above-mentioned error range, then continue the grade reducing indoor fan, until refrigerant temperature variable quantity 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 greater than the maximum 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 refrigerant temperature variable quantity is less than the minimum of a value 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 refrigerant temperature variable quantity, when refrigerant temperature variable quantity is still less than the minimum of a value of above-mentioned error range, then continue the grade promoting indoor fan, until refrigerant temperature variable quantity is positioned at above-mentioned error range.Be understandable that, when the rotating speed grade that above-mentioned indoor fan is current is G, 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 G.
Further, with reference to Fig. 4, based on indoor fan control method the 3rd embodiment of the present invention, in indoor fan control method the 4th 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 refrigerant temperature variable quantity is positioned at above-mentioned error range 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.
The present invention also provides a kind of indoor fan control device, and with reference to Fig. 5, in indoor fan control device first embodiment of the present invention, this indoor fan control device comprises:
First acquisition module 10, for obtaining the refrigerant temperature variable quantity produced when refrigerant carries out heat exchange in indoor set, described refrigerant temperature variable quantity comprises the degree of superheat or degree of supercooling;
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, when air-conditioning heating runs, get the degree of supercooling that the refrigerant temperature variable quantity produced when refrigerant carries out heat exchange in indoor set is refrigerant generation when indoor set carries out heat exchange; When air conditioner refrigerating runs, get the degree of superheat that the refrigerant temperature variable quantity produced when refrigerant carries out heat exchange in indoor set is refrigerant generation when indoor set carries out heat exchange.
The obtain manner of the above-mentioned degree of superheat and degree of supercooling can be arranged according to actual needs, such as, by coiler temperature or pressure in sensing chamber, then can calculate.Be described in detail in the mode of detected temperatures below.Can first at coil inlet and the equal set temperature sensor of coil outlets to detect the temperature of coil inlet and coil outlet refrigerant; Then every the temperature value that prefixed time interval acquisition temperature sensor detects, with the difference of the temperature Tin of the temperature Tout and coil inlet place refrigerant that obtain coil outlet refrigerant.When air-conditioning heating runs, the temperature Tout that can deduct coil outlet refrigerant according to the temperature Tin of coil inlet place refrigerant obtains degree of supercooling SCt) (SCt=Tin-Tout); When air conditioner refrigerating runs, the temperature Tin that can deduct coil inlet place refrigerant according to the temperature Tout of coil outlet refrigerant obtains degree of superheat SHt (SHt=Tout-Tin).In following embodiment, run with air conditioner refrigerating and make detailed description, namely in following embodiment, above-mentioned refrigerant temperature variable quantity is that the degree of superheat is described.
First judge module 20, for judging whether described refrigerant temperature variable quantity is positioned at the preset error scope of predetermined target value;
Adjusting module 30, for when described refrigerant temperature variable quantity is greater than the maximum of described preset error scope, reduces the rotating speed of described indoor fan; When described refrigerant temperature variable quantity is less than the minimum of a value of described preset error scope, promote the rotating speed of described indoor fan.
In the present embodiment, the size of above-mentioned desired value and error amount can carry out arranging that (wherein error amount is divided into upper limit error amount and lower limit error amount according to actual needs, if upper and lower limit error amount is identical, then can represent as error range is SHS-a ~ SHS+a; If upper and lower limit error amount is different, then can represent as error range is SHS-c ~ SHS+b).Such as above-mentioned desired value is target superheat degree SHS, and error amount is a, and getting the degree of superheat produced when refrigerant carries out heat exchange in indoor set is SHt; Then above-mentioned preset error scope is SHS-a ~ SHS+a, and the maximum of preset error scope is SHS+a, and the minimum of a value of preset error scope is SHS-a.As SHS-a≤SHt≤SHS+a, then determine that described refrigerant temperature variable quantity is positioned at the preset error scope of predetermined target value, now will the wind speed of indoor set not adjusted; As SHt < SHS-a, then promote the rotating speed of indoor fan; As SHt > SHS+a, then reduce the rotating speed of indoor fan.
The refrigerant temperature variable quantity produced time in the embodiment of the present invention by obtaining refrigerant and carry out heat exchange in indoor set; Then judge whether described refrigerant temperature variable quantity is positioned at the preset error scope of predetermined target value; When described refrigerant temperature variable quantity is greater than the maximum of described preset error scope, reduce the rotating speed of described indoor fan; When described refrigerant temperature variable quantity is less than the minimum of a value of described preset error scope, promote the rotating speed of described indoor fan.Because indoor fan control device provided by the invention achieves the degree of superheat and degree of supercooling that produce when refrigerant carries out heat exchange in indoor set 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. 6, 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 after adjustment is greater than preset value; When the described duration is greater than preset value, triggers described first acquisition module and obtain the refrigerant temperature variable quantity produced when refrigerant carries out heat exchange in indoor set.
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 refrigerant temperature variable quantity operation obtaining and produce when refrigerant carries out heat exchange in indoor set, to enter adjustment next time, until above-mentioned refrigerant temperature variable quantity is positioned at the preset error scope of predetermined target value, thus indoor fan is made to reach preferably rotating speed.
Be understandable that, when above-mentioned refrigerant temperature variable quantity is not positioned at the preset error scope of predetermined target value, can arrange according to actual needs the adjustment mode of indoor fan, such as, gear can be adopted to adjust, the mode of stepless speed regulation also can be adopted to adjust.It should be noted that the adjustment mode of the rotating speed reducing indoor fan can be consistent with the adjustment mode of the rotating speed promoting indoor fan, also can be inconsistent.In indoor fan control device the 3rd embodiment of the present invention, be that consistent situation makes detailed description in the adjustment mode reducing the rotating speed of indoor fan with the adjustment mode of the rotating speed promoting indoor fan:
With reference to Fig. 7, 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 adjusting module 30 comprises:
First adjustment unit 31, for when described refrigerant temperature variable quantity is greater than the maximum of described error range, reduces the rotating speed of described indoor fan according to the rotating speed grade preset;
Second adjustment unit 32, for when described refrigerant temperature variable quantity is less than the minimum of a value of described error range, promotes 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.Should be noted that, when described refrigerant temperature variable quantity is greater than the maximum of described error range, the grade amount reduced can adjust according to preset rules, as can be reduced a rotating speed grade at every turn, also can select the quantity downgraded according to the difference size between refrigerant temperature variable quantity and the maximum of error range, be positioned at error range to make refrigerant temperature variable quantity as early as possible.When described refrigerant temperature variable quantity is less than the minimum of a value of described error range, the grade amount promoted can adjust according to preset rules, as can be pointed out a rotating speed grade at every turn, also can select the quantity promoting grade according to the difference size between refrigerant temperature variable quantity and the minimum of a value of error range, be positioned at error range to make refrigerant temperature variable quantity as early as possible.Detailed description is made to adjust a rotating speed grade at every turn:
If the current rotating speed grade of indoor fan is D, when refrigerant temperature variable quantity is greater than the maximum of 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 refrigerant temperature variable quantity, when refrigerant temperature variable quantity is still greater than the maximum of above-mentioned error range, then continue the grade reducing indoor fan, until refrigerant temperature variable quantity 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 greater than the maximum 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 refrigerant temperature variable quantity is less than the minimum of a value 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 refrigerant temperature variable quantity, when refrigerant temperature variable quantity is still less than the minimum of a value of above-mentioned error range, then continue the grade promoting indoor fan, until refrigerant temperature variable quantity is positioned at above-mentioned error range.Be understandable that, when the rotating speed grade that above-mentioned indoor fan is current is G, 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 G.
Further, with reference to Fig. 8, based on indoor fan control device the 3rd embodiment of the present invention, in indoor fan control device the 4th 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 refrigerant temperature variable quantity is positioned at above-mentioned error range 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.
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:
S1: obtain the refrigerant temperature variable quantity produced when refrigerant carries out heat exchange in indoor set, described refrigerant temperature variable quantity comprises the degree of superheat or degree of supercooling;
S2: judge whether described refrigerant temperature variable quantity is positioned at the preset error scope of predetermined target value;
S3: according to the judged result adjustment rotation speed of fan of S2 step, comprising: when described refrigerant temperature variable quantity is greater than the maximum of described preset error scope, reduce the rotating speed of described indoor fan; When described refrigerant temperature variable quantity is less than the minimum of a value of described preset error scope, promote the rotating speed of described indoor fan.
2. indoor fan control method as claimed in claim 1, is characterized in that, also comprise after S3 step:
S31: judge whether the duration that described indoor fan runs according to the rotating speed after adjustment is greater than preset value;
If so, the step of the refrigerant temperature variable quantity produced when described acquisition refrigerant carries out heat exchange in indoor set is then performed.
3. indoor fan control method as claimed in claim 1, is characterized in that, described when refrigerant temperature variable quantity is greater than the maximum of described error range, reduces the rotating speed of described indoor fan, comprising:
When described refrigerant temperature variable quantity is greater than the maximum of described error range, reduce the rotating speed of described indoor fan according to the rotating speed grade preset.
4. indoor fan control method as claimed in claim 1, is characterized in that, described when refrigerant temperature variable quantity is less than the minimum of a value of described error range, promotes the rotating speed of described indoor fan, comprising:
When described refrigerant temperature variable quantity is less than the minimum of a value of described error range, promote the rotating speed of described indoor fan according to the rotating speed grade preset.
5. the indoor fan control method as described in claim 3 or 4, 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.
6. an indoor fan control device, is characterized in that, described indoor fan control device comprises:
First acquisition module, for obtaining the refrigerant temperature variable quantity produced when refrigerant carries out heat exchange in indoor set, described refrigerant temperature variable quantity comprises the degree of superheat or degree of supercooling;
First judge module, for judging whether described refrigerant temperature variable quantity is positioned at the preset error scope of predetermined target value;
Adjusting module, for when described refrigerant temperature variable quantity is greater than the maximum of described preset error scope, reduces the rotating speed of described indoor fan; When described refrigerant temperature variable quantity is less than the minimum of a value of described preset error scope, promote the rotating speed of described indoor fan.
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 after adjustment is greater than preset value; When the described duration is greater than preset value, triggers described first acquisition module and obtain the refrigerant temperature variable quantity produced when refrigerant carries out heat exchange in indoor set.
8. indoor fan control device as claimed in claim 6, it is characterized in that, described adjusting module comprises:
First adjustment unit, for when described refrigerant temperature variable quantity is greater than the maximum of described error range, reduces the rotating speed of described indoor fan according to the rotating speed grade preset.
9. indoor fan control device as claimed in claim 6, it is characterized in that, described adjusting module comprises:
Second adjustment unit, for when described refrigerant temperature variable quantity is less than the minimum of a value of described error range, promotes the rotating speed of described indoor fan according to the rotating speed grade preset.
10. indoor fan control device as claimed in claim 8 or 9, 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.
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| CN201510416902.8A CN104990236B (en) | 2015-07-15 | 2015-07-15 | Indoor fan control method and device |
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