CN104006485A - Method for controlling indoor fan rotating speed of air conditioner under heating mode - Google Patents
Method for controlling indoor fan rotating speed of air conditioner under heating mode Download PDFInfo
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- CN104006485A CN104006485A CN201310055924.7A CN201310055924A CN104006485A CN 104006485 A CN104006485 A CN 104006485A CN 201310055924 A CN201310055924 A CN 201310055924A CN 104006485 A CN104006485 A CN 104006485A
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- indoor fan
- rotational speed
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Abstract
The invention discloses a method for controlling an indoor fan rotating speed of an air conditioner under a heating mode. The controlling method comprises a first step of detecting the indoor environment temperature T1 and the evaporator coil temperature T2 in the air conditioner running process; a second step of comparing the indoor environment temperature T1 with a first predetermined threshold T1s and comparing the evaporator coil temperature T2 with a second predetermined threshold T2s; a third step of controlling an indoor fan to be improved to a second rotating speed Nj from a first rotating speed Ni to run when in the second step detecting that T1 is larger than T1s and T2 is larger than T2s; returning to the second step when in the second step detecting that T1 is no larger than T1s and T2 is no larger than T2s; a fourth step of comparing the evaporator coil temperature T2 with a third predetermined threshold T2x; a fifth step of entering the second step when T2 is smaller than T2x, and returning to the fourth step when T2 is no smaller than T2x. By utilizing the controlling method, the more comfortable environment can be provided for users, service lives of components are prolonged, and the energy saving effect of the air conditioner is improved.
Description
Technical field
The present invention relates to art of refrigeration units, especially relate to the control method of the indoor fan rotating speed of a kind of air-conditioner under heating mode.
Background technology
After the long-time use of air-conditioner, due to reasons such as screen pack stop up, indoor wind wheel is aging, there is the attenuation problem of air quantity, wind speed, and then can affect the heating effect of air-conditioner in meeting.
Even the air-conditioner that service time is not long, due to the difference of the conditions such as installation, environment for use, can there is larger gap with using the temperature in room in air-conditioner return air temperature, and it is not far that main cause is that air conditioner air-out blows, and cause environment for use temperature distributing disproportionation even, and then affect heating effect.
Summary of the invention
The present invention is intended at least solve one of technical problem existing in prior art.For this reason, one object of the present invention is to propose the control method of the indoor fan rotating speed of a kind of air-conditioner under heating mode, by utilizing this control method, can provide more comfortable environment for user, improve components and parts service life, promote the energy-saving effect of air-conditioner.
Described air-conditioner comprises indoor fan and evaporator coil, and the control method of the indoor fan rotating speed according to the air-conditioner of the embodiment of the present invention under heating mode, comprises the steps:
S1: start air-conditioner, in the process of described air-conditioner operation, detect indoor environment temperature T
1, detect evaporator coil temperature T
2;
S2: control described indoor fan in the first rotational speed N
ilower first scheduled time of operation, and by the described indoor environment temperature T detecting
1with the first predetermined threshold T
1Scompare, by described evaporator coil temperature T
2with the second predetermined threshold T
2Scompare;
S3: described T detected in step S2
1> T
1Sand described T
2> T
2Stime, control described indoor fan by the first rotational speed N
ibring up to the second rotational speed N
joperation detects described T in step S2
1≤ T
1Sor described T
2≤ T
2Stime, get back to step S2;
S4: control described indoor fan and moved for second scheduled time with the rotating speed in step S3, and by the described evaporator coil temperature T detecting
2with the 3rd predetermined threshold T
2Xcompare;
S5: as described T
2< T
2xtime, enter into step S2, as described T
2>=T
2Xtime, get back to step S4.
By utilizing the control method of the embodiment of the present invention, in air conditioner heat-production running, according to the indoor environment temperature T of real-time detection
1with the first predetermined threshold T
1Scomparative result, and evaporator coil temperature T
2with the second predetermined threshold T
2Scomparative result, can be at indoor environment temperature T
1be greater than the first predetermined threshold T
1Sand evaporator coil temperature T
2be greater than the second predetermined threshold T
2Stime, by indoor fan the first rotational speed N
ibe promoted to the second rotational speed N
j, and then increase air supplying distance, and improve wind speed, make indoor temperature distribution even, reduce thermal stratification, for user provides more comfortable environment.
In addition, as evaporator coil temperature T
2when too high, air-conditioner condensing pressure is excessive, by improving the rotating speed of indoor fan, thereby air quantity is improved, and increases air conditioner room unit heat radiation, effectively reduces air-conditioner system pressure, improves air-conditioner components and parts service life.
Increase air conditioner room unit heat radiation, show as heating capacity and improve, reduce air-conditioner system pressure, show as reduction consumed power, therefore, control method of the present invention can improve heating energy efficiency ratio (COP) effectively.
In addition, the control method of the indoor fan rotating speed of air-conditioner according to the present invention under heating mode also can have following additional technical feature:
Described step S3 also comprises:
S31: controlling described indoor fan by the first rotational speed N
ibring up to the second rotational speed N
jbefore operation, by described the second rotational speed N
jmaximum desired speed N with described indoor fan
acompare;
S32: when described the second rotational speed N
jbe greater than described maximum desired speed N
atime, described indoor fan is with described maximum desired speed N
aoperation, when described the second rotational speed N
jbe less than or equal to described maximum desired speed N
atime, described indoor fan is with described the second rotational speed N
joperation.
Alternatively, described first scheduled time and described second scheduled time equate.
Particularly, described the second predetermined threshold T
2Sbe greater than described the 3rd predetermined threshold T
2x.
Alternatively, the wind speed of described air-conditioner is many grades, and described indoor fan all has the first rotational speed N in each shelves
iwith the second rotational speed N
j.
Alternatively, described indoor environment temperature T
1with described evaporator coil temperature T
2all by temperature sensor, detect.
Alternatively, described temperature sensor comprises temperature sensor and pipe temperature sensor.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination obviously and is easily understood becoming the description of embodiment, wherein:
Fig. 1 is the flow chart of the control method of the indoor fan rotating speed under heating mode according to the air-conditioner of the embodiment of the present invention.
Fig. 2 is the air-supply design sketch while moving under different rotating speeds according to the indoor fan of the air-conditioner of the embodiment of the present invention.
The specific embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of indications such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, except as otherwise noted, the implication of " a plurality of " is two or more.
In description of the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be to be also electrically connected to; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can concrete condition understand above-mentioned term concrete meaning in the present invention.
Below with reference to Fig. 1, describe the control method of the indoor fan rotating speed under heating mode according to the air-conditioner of the embodiment of the present invention, the method is suitable for air-conditioner while moving under heating mode, and indoor fan rotating speed is controlled.
Be understandable that, air-conditioner comprises indoor fan and evaporator coil.As shown in Figure 1, the control method of the indoor fan rotating speed according to the air-conditioner of the embodiment of the present invention under heating mode, comprises the steps:
S1: start air-conditioner, in the process of air-conditioner operation, detect indoor environment temperature T
1, detect evaporator coil temperature T
2.
S2: control room inner blower is in the first rotational speed N
ilower first scheduled time of operation, and by the indoor environment temperature T detecting
1with the first predetermined threshold T
1scompare, by evaporator coil temperature T
2with the second predetermined threshold T
2Scompare.
S3: T detected in step S2
1> T
1Sand T
2> T
2Stime, control room inner blower is by the first rotational speed N
ibring up to the second rotational speed N
joperation detects T in step S2
1≤ T
1Sor T
2≤ T
2Stime, get back to step S2.That is, as indoor environment temperature T
1be greater than the first predetermined threshold T
1Sand evaporator coil temperature T
2be greater than the second predetermined threshold T
2Stime, the rotating speed of control room inner blower improves; On the contrary, as indoor environment temperature T
1be less than or equal in the first predetermined threshold T
1S, or evaporator coil temperature T
2be less than or equal in the second predetermined threshold T
2Stime, control room inner blower is with the first rotational speed N
ioperation, and by the indoor environment temperature T detecting
1with the first predetermined threshold T
1Scompare.
S4: control room inner blower moved for second scheduled time with the rotating speed in step S3, and within second scheduled time, by the evaporator coil temperature T detecting
2with the 3rd predetermined threshold T
2Xcompare.That is, when indoor fan rotating speed is brought up to the second rotational speed N
jafter, first control room inner blower is with the second rotational speed N
jat least the second scheduled time of operation, and by the evaporator coil temperature T detecting
2with the 3rd predetermined threshold T
2Xcompare.
S5: work as T
2< T
2Xtime, enter into step S2, work as T
2>=T
2Xtime, get back to step S4.That is, as evaporator coil temperature T
2be less than the 3rd predetermined threshold T
2Xtime, control room inner blower is from the second rotational speed N
jbe reduced to the first rotational speed N
ilower at least the first scheduled time of operation, and continue the indoor environment temperature T detecting
1with the first predetermined threshold T
1Scompare, by evaporator coil temperature T
2with the second predetermined threshold T
2Scompare; As evaporator coil temperature T
2be more than or equal to the 3rd predetermined threshold T
2Xtime, continue the evaporator coil temperature T detecting
2with the 3rd predetermined threshold T
2Xcompare.
Here it will be appreciated that, when indoor fan rotating speed changes, need control room inner blower to move at least scheduled time with the speed before changing, so that indoor fan state, indoor environment temperature T
1with evaporator coil temperature T
2deng tending towards stability, can avoid thus indoor fan rotating speed frequent variations, system pressure cannot reach balance, and the problem such as cause a deviation larger.
Particularly, user starts after air-conditioner, detects indoor environment temperature T
1with evaporator coil temperature T
2.Indoor fan is according to the first rotational speed N
ioperation detects in real time indoor environment temperature T in running
1with evaporator coil temperature T
2, with this first rotational speed N
iafter at least the first scheduled time of operation, when simultaneously, meet indoor environment temperature T
1> the first predetermined threshold T
1sand evaporator coil temperature T
2> the second predetermined threshold T
2safter, indoor fan rotating speed is by the first original rotational speed N
ibring up to the second rotational speed N
j.Make indoor fan in the second rotational speed N
jlower continuous service, after at least the second scheduled time, continues to detect in real time indoor environment temperature T
1with evaporator coil temperature T
2, as evaporator coil temperature T
2< the 3rd predetermined threshold T
2xtime, indoor fan exits the second rotational speed N
jand with the first rotational speed N
ioperation, so circulation.
By utilizing the control method of the embodiment of the present invention, in air conditioner heat-production running, according to the indoor environment temperature T of real-time detection
1with the first predetermined threshold T
1Scomparative result, and evaporator coil temperature T
2with the second predetermined threshold T
2Scomparative result, can be at indoor environment temperature T
1be greater than the first predetermined threshold T
1Sand evaporator coil temperature T
2be greater than the second predetermined threshold T
2Stime, by indoor fan the first rotational speed N
ibe promoted to the second rotational speed N
j, and then increase air supplying distance, and improve wind speed, make indoor temperature distribution even, reduce thermal stratification, for user provides more comfortable environment.
Improve design sketch as shown in Figure 2.What wherein, arrow A was indicated is that indoor fan is in the first rotational speed N
iduring lower operation, the air-supply effect of air-conditioner, what arrow B was indicated is that indoor fan is in the second rotational speed N
jduring lower operation, the air-supply effect of air-conditioner.
What those of ordinary skills were known is, air-conditioner is in heating process, in the higher situation of indoor environment temperature, because air-conditioner system pressure is large, can cause compressor current to increase, when compressor current is greater than after a certain setting value, for compressor, can exert an influence service life, even cause compressor not use, compressor must move in frequency reducing, but can affect like this heating effect of air-conditioner.This problem is more obvious in convertible frequency air-conditioner.
By utilizing the control method of the embodiment of the present invention, in air conditioner heat-production running, indoor environment temperature T
1be greater than the first predetermined threshold T
1Sand evaporator coil temperature T
2be greater than the second predetermined threshold T
2stime, by improving the rotating speed of indoor fan, can play the effect that reduces air-conditioner system pressure, effectively reduce compressor current, delay compressor frequency reducing speed, thereby the heating effect of raising air-conditioner is that user creates more comfortable environment further.
In addition, as evaporator coil temperature T
2when too high, air-conditioner condensing pressure is excessive, by improving the rotating speed of indoor fan, thereby air quantity is improved, and increases air conditioner room unit heat radiation, effectively reduces air-conditioner system pressure, improves air-conditioner components and parts service life.
Increase air conditioner room unit heat radiation, show as heating capacity and improve, reduce air-conditioner system pressure, show as reduction consumed power, therefore, control method of the present invention can improve heating energy efficiency ratio (COP) effectively, promotes the energy-saving effect of air-conditioner.
To sum up, according to the control method of the embodiment of the present invention, the indoor environment temperature T detecting in real time by basis
1relation and evaporator coil temperature T with the first predetermined threshold T1s
2with the relation of the second predetermined threshold T2s, carry out the rotating speed of conditioning chamber inner blower, thereby can provide more comfortable environment for user, improve components and parts service life, promote the energy-saving effect of air-conditioner.
In some embodiments of the invention, first scheduled time and second scheduled time can equate.First scheduled time and second scheduled time can be according to free settings such as product performance, operating characteristics, and first scheduled time and second scheduled time can be random time length, and for example, first scheduled time and second scheduled time can be between 60S-10min.
As shown in Figure 1, step S3 also can comprise the steps:
S31: controlling described indoor fan by the first rotational speed N
ibefore bringing up to the second rotational speed N j operation, by the second rotational speed N
jmaximum desired speed N with indoor fan
acompare.Air-conditioner can be set maximum desired speed N
a, when needs control room inner blower is from the first rotational speed N
ibring up to the second rotational speed N
jtime, can be first by the second rotational speed N
jmaximum desired speed N with indoor fan
acompare.
S32: when the second rotational speed N
jbe greater than maximum desired speed N
atime, indoor fan is with maximum desired speed N
aoperation, when the second rotational speed N
jbe less than or equal to maximum desired speed N
atime, indoor fan is with the second rotational speed N
joperation.That is, when indoor fan rotating speed reaches maximum desired speed N
aafter, the rotating speed of indoor fan no longer improves.
In other words, indoor fan is set maximum desired speed N
aif, the second rotational speed N
jsurpass maximum desired speed N
a, with maximum desired speed N
aoperation.Thus, can to indoor fan, motor, play effectively the effect of protection, avoid that indoor fan rotating speed is too high to be damaged, with this, can improve the service life of air-conditioner.
The second predetermined threshold T
2Sbe greater than the 3rd predetermined threshold T
2X.Here it will be appreciated that, as evaporator coil temperature T
2be greater than the second predetermined threshold T
2Stime, can improve indoor fan rotating speed to the second rotational speed N
j, as evaporator coil temperature T
2be less than the second predetermined threshold T
2Stime, can make indoor fan rotating speed with in the first rotational speed N
i.In other words, as evaporator coil temperature T
2when too high, can improve the rotating speed of indoor fan, so that the hot blast blowing out is more even on indoor distribution ground, as evaporator coil temperature T
2when too low, can reduce the rotating speed of indoor fan, to guarantee leaving air temp.Therefore, by making the second predetermined threshold T
2Sbe greater than the 3rd predetermined threshold T
2X, can make this control method more meet logic, more reasonable, more adapt to actual conditions.
In addition the second predetermined threshold T,
2Sbe greater than the first predetermined threshold T
1S.Owing to heating in situation, evaporator coil temperature T
2conventionally can be higher than indoor environment temperature T
1so,, by making the second predetermined threshold T
2Sbe greater than the first predetermined threshold T
1S, can make control method of the present invention more adapt to actual conditions, control method is more reasonable.
In some embodiments of the invention, the wind speed of air-conditioner can be many grades, and indoor fan all has the first rotational speed N in each shelves
iwith the second rotational speed N
j.Wherein, the first rotational speed N in each grade
iwith the second rotational speed N in this grade
jcorresponding one by one.By many grades of wind speed are set, thereby can meet further the comfortableness of indoor leaving air temp.The wind speed shelves of air-conditioner can, after air-conditioner starts, be set by user voluntarily.
Indoor environment temperature T
1with evaporator coil temperature T
2all can detect by temperature sensor.Wherein, for measuring indoor environment temperature T
1temperature sensor can be located near air-conditioner return air inlet, for measuring, detect evaporator coil temperature T
2the temperature-sensing probe of temperature sensor can be close on evaporator coil.
Particularly, temperature sensor can comprise temperature sensor and pipe temperature sensor.Thus, can make the control method of indoor fan rotating speed convenient, simpler.
The embodiment of the control method of the indoor fan rotating speed under heating mode is described below according to the air-conditioner of the embodiment of the present invention.
First, suppose the first predetermined threshold T
1s=24 ℃, the second predetermined threshold T
2s=45 ℃, the 3rd predetermined threshold T
2x=40 ℃.
Air conditioner chamber's inner blower is divided into high, medium and low three wind speed gear, supposes three corresponding the first rotational speed N of wind speed shelves
ibe respectively low wind N
1=800 turn, apoplexy N
2=900 turn, high wind N
3=1000 turn, correspondingly, and the second rotational speed N one to one with it
jbe respectively N
4=850 turn, N
5=950 turn, N
6=1050 turn.
First scheduled time and second scheduled time are 60S.
In first embodiment of the present invention, suppose to start air conditioner heat-production, be greater than running time after 60S, indoor environment temperature T detected
1be 20 ℃, evaporator coil temperature T
2be 42 ℃, do not reach raising speed condition, now air conditioner chamber's inner blower running speed is as shown in table 1.
Table 1: the indoor fan rotating speed table of comparisons before raising speed
| Wind speed shelves | High | In | Low |
| Indoor fan rotational speed N | 1000 | 900 | 800 |
In second embodiment of the present invention, suppose to start air conditioner heat-production, be greater than running time after 60S, indoor environment temperature T detected
1be 25 ℃, evaporator coil temperature T
2be 46 ℃, reach raising speed condition, meanwhile, due to the second rotational speed N
jnot higher than the maximum desired speed N of indoor fan
a(this embodiment supposes N
a=1080 turn), now air conditioner chamber's inner blower running speed is as shown in table 2.
Table 2: the indoor fan rotating speed table of comparisons after raising speed
| Wind speed shelves | High | In | Low |
| Indoor fan rotational speed N | 1050 | 950 | 850 |
In the 3rd embodiment of the present invention, suppose to start air conditioner heat-production, be greater than running time after 60S, indoor environment temperature T detected
1be 25 ℃, evaporator coil temperature T
2be 46 ℃, reach raising speed condition, high wind speed is when corresponding the second rotational speed N
jhigher than the maximum desired speed N of indoor fan
a(this embodiment supposes N
a=1030 turn), now air conditioner chamber's inner blower running speed is as shown in table 3.
Table 3: the indoor fan rotating speed table of comparisons after raising speed speed limit
| Wind speed shelves | High | In | Low |
| Indoor fan rotational speed N | 1030 | 950 | 850 |
In the 4th embodiment of the present invention, while supposing air conditioner heat-production operation, indoor fan is with the second rotational speed N
joperation, and be greater than running time after 60S, evaporator coil temperature T detected
2it is 39 ℃, lower than the 3rd predetermined threshold T
2x, now, indoor fan rotating speed exits the second rotational speed N j state, and with the rotating speed operation shown in table 1.
In the description of this description, the description of reference term " embodiment ", " some embodiment ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present invention and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is limited by claim and equivalent thereof.
Claims (7)
1. a control method for the indoor fan rotating speed of air-conditioner under heating mode, described air-conditioner comprises indoor fan and evaporator coil, it is characterized in that, comprises the steps:
S1: start air-conditioner, in the process of described air-conditioner operation, detect indoor environment temperature T
1, detect evaporator coil temperature T
2;
S2: control described indoor fan in the first rotational speed N
ilower first scheduled time of operation, and by the described indoor environment temperature T detecting
1with the first predetermined threshold T
1Scompare, by described evaporator coil temperature T
2with the second predetermined threshold T
2Scompare;
S3: described T detected in step S2
1> T
1Sand described T
2> T
2Stime, control described indoor fan by the first rotational speed N
ibring up to the second rotational speed N
joperation detects described T in step S2
1≤ T
1Sor described T
2≤ T
2Stime, get back to step S2;
S4: control described indoor fan and moved for second scheduled time with the rotating speed in step S3, and by the described evaporator coil temperature T detecting
2with the 3rd predetermined threshold T
2Xcompare;
S5: as described T
2< T
2Xtime, enter into step S2, as described T
2>=T
2Xtime, get back to step S4.
2. control method according to claim 1, is characterized in that, described step S3 also comprises:
S31: controlling described indoor fan by the first rotational speed N
ibring up to the second rotational speed N
jbefore operation, by described the second rotational speed N
jmaximum desired speed N with described indoor fan
acompare;
S32: when described the second rotational speed N
jbe greater than described maximum desired speed N
atime, described indoor fan is with described maximum desired speed N
aoperation, when described the second rotational speed N
jbe less than or equal to described maximum desired speed N
atime, described indoor fan is with described the second rotational speed N
joperation.
3. control method according to claim 1, is characterized in that, described first scheduled time and described second scheduled time equate.
4. control method according to claim 1, is characterized in that, described the second predetermined threshold T
2Sbe greater than described the 3rd predetermined threshold T
2X.
5. according to the control method described in claim 1-4, it is characterized in that, the wind speed of described air-conditioner is many grades, and described indoor fan all has the first rotational speed N in each shelves
iwith the second rotational speed N
j.
6. control method according to claim 1, is characterized in that, described indoor environment temperature T
1with described evaporator coil temperature T
2all by temperature sensor, detect.
7. control method according to claim 6, is characterized in that, described temperature sensor comprises temperature sensor and pipe temperature sensor.
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|---|---|---|---|
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