CN107421190A - The control method and device of refrigerator and wherein condensation fan - Google Patents
The control method and device of refrigerator and wherein condensation fan Download PDFInfo
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- CN107421190A CN107421190A CN201710214374.7A CN201710214374A CN107421190A CN 107421190 A CN107421190 A CN 107421190A CN 201710214374 A CN201710214374 A CN 201710214374A CN 107421190 A CN107421190 A CN 107421190A
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- temperature
- condensation fan
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- change
- temperature gap
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
- F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/005—Mounting of control devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
- F25D2317/068—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans
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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
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Abstract
The invention discloses a kind of refrigerator and the wherein control method and device of condensation fan, wherein, methods described, including：Detect the environment temperature residing for the compressor of refrigerator；The temperature gap between environment temperature residing for acquisition given temperature and compressor, and obtain the rate of change of temperature gap；Fuzzy processing is carried out to the rate of change of temperature gap and temperature gap to obtain corresponding first fuzzy subset and the second fuzzy subset respectively；Corresponding relation between rotating speed based on temperature gap, the rate of change of temperature gap and condensation fan establishes Fuzzy Math Model；According to the first fuzzy subset and the second fuzzy subset, the control parameter of condensation fan is obtained by calling Fuzzy Math Model, and the rotating speed of condensation fan is controlled according to control parameter.The method according to the invention, real-time and the rotating speed of condensation fan can be accurately controlled, the energy consumption of condensation fan can be reduced and reduce its and run noise.
Description
Technical field
The present invention relates to household electrical appliance technical field, control method, one kind of condensation fan in more particularly to a kind of refrigerator
The control device of condensation fan and a kind of refrigerator in refrigerator.
Background technology
For wind cooling refrigerator, the blower fan such as condensation fan of Machine Room are parts important in wind cooling refrigerator, institute
Condensation fan is adjustable speed blower fan mostly, you can in different environment temperatures, control condensation fan is with different rotating speeds
Operation.
However, it is relatively simple currently for the mode of the rotating speed of condensation fan in control wind cooling refrigerator, for example, working as air-cooled ice
When the rotating speed of condensation fan is operated with high rotating speed or the slow-speed of revolution in case, high rotating speed and slow-speed of revolution both of these case can be controlled
System, wherein, high rotating speed is mainly for special control models such as quickly cooling, quick-frozen and high temperature, and the slow-speed of revolution is mainly for normal control
Molding formula.Step speed regulation can be belonged to the control mode of the rotating speed of condensation fan, during condensation fan works, existed very
The shortcomings that more, such as control speed is slow, the inaccurate and easy overshoot of control, and unnecessary waste is caused in energy consumption, and
Condensation fan noise when high rotating speed is run is also relatively large.
The content of the invention
It is contemplated that at least solves one of technical problem in correlation technique to a certain extent.
Therefore, it is an object of the present invention to propose a kind of control method of condensation fan in refrigerator, it can be real-time
The rotating speed of condensation fan is quickly and accurately controlled, the energy consumption of condensation fan can be reduced and reduce it and run noise.
Control device of the second object of the present invention in the condensation fan in a kind of refrigerator is proposed.
Third object of the present invention is to propose a kind of refrigerator.
To reach above-mentioned purpose, first aspect present invention embodiment proposes a kind of controlling party of condensation fan in refrigerator
Method, comprise the following steps：Detect the environment temperature residing for the compressor of the refrigerator；Obtain given temperature and the compressor institute
Temperature gap between the environment temperature at place, and obtain the rate of change of the temperature gap；Respectively to the temperature gap and institute
The rate of change for stating temperature gap carries out Fuzzy processing to obtain corresponding first fuzzy subset and the second fuzzy subset；Based on institute
State the corresponding relation between the rotating speed of temperature gap, the rate of change of the temperature gap and the condensation fan and establish fuzzy digital-to-analogue
Type；According to first fuzzy subset and the second fuzzy subset, by calling the Fuzzy Math Model to obtain the condensating wind
The control parameter of machine, and the rotating speed of the condensation fan is controlled according to the control parameter.
The control method of condensation fan in refrigerator according to embodiments of the present invention, first, is detected residing for the compressor of refrigerator
Environment temperature, and obtain the temperature gap between given temperature and environment temperature residing for compressor, and obtain temperature difference
The rate of change of value, then, Fuzzy processing is carried out to the rate of change of temperature gap and temperature gap respectively to obtain corresponding the
One fuzzy subset and the second fuzzy subset, and the rotating speed based on temperature gap, the rate of change of temperature gap and condensation fan it
Between corresponding relation establish Fuzzy Math Model, finally, according to the first fuzzy subset and the second fuzzy subset, by calling fuzzy number
Model is controlled with obtaining the control parameter of condensation fan according to control parameter to the rotating speed of condensation fan.This method, adopt
With fuzzy control method, different control modes is used in different temperature ranges, when environment temperature is close to given temperature, is adopted
With accurate adjustment mode, reduce the rotation speed change amplitude of condensation fan, rotating speed is unlikely to overshoot, when environment temperature from given temperature compared with
When remote, using coarse adjustment mode, the rotation speed change amplitude of condensation fan is increased so that environment temperature rapidly reaches given temperature,
So as to real-time and accurately control the rotating speed of condensation fan, the energy consumption of condensation fan can be reduced and reduce its operation
Noise.
In addition, can also be had according to the control method of condensation fan in the refrigerator of the above embodiment of the present invention proposition as follows
Additional technical characteristic：
According to one embodiment of present invention, the rate of change of the temperature gap and the temperature gap is being carried out respectively
Before Fuzzy processing, discrete processes also are carried out to the rate of change of the temperature gap and the temperature gap respectively.
According to one embodiment of present invention, rate of change and the condensating wind of the temperature gap, the temperature gap
Corresponding relation between the rotating speed of machine, including：When the temperature gap be bear, the rate of change of the temperature gap be just, it is described
Environment temperature residing for compressor towards the given temperature direction change and apart from the given temperature farther out when, to described cold
The rotating speed of solidifying blower fan carries out positive coarse adjustment；When the temperature gap be bear, the rate of change of the temperature gap be just, the compression
Environment temperature residing for machine towards the given temperature direction change and apart from the given temperature it is nearer when, to the condensating wind
The rotating speed of machine carries out positive accurate adjustment；When the temperature gap be just, the rate of change of the temperature gap be just, compressor institute
When the environment temperature at place is away from the given temperature direction change, reverse coarse adjustment is carried out to the rotating speed of the condensation fan；Work as institute
State temperature gap be just, the rate of change of the temperature gap be bear, the environment temperature residing for the compressor is towards described given
Temperature direction change and apart from the given temperature it is nearer when, reverse accurate adjustment is carried out to the rotating speed of the condensation fan.
According to one embodiment of present invention, based on the temperature gap, the temperature gap rate of change with it is described cold
Corresponding relation between the rotating speed of solidifying blower fan establishes Fuzzy Math Model, including：Based on the temperature gap, the temperature gap
Corresponding relation between the rotating speed of rate of change and the condensation fan, and according to the first fuzzy subset, second fuzzy subset
And the 3rd fuzzy subset corresponding to the rotating speed of the condensation fan generates fuzzy control state table；To the fuzzy control shape
State table carries out fuzzy number conversion to obtain the Fuzzy Math Model.
According to one embodiment of present invention, the rotating speed of the condensation fan is controlled according to the control parameter,
Including：The control parameter is multiplied by the preset ratio factor to obtain control electric current；According to the control electric current to the condensation
The rotating speed of blower fan is controlled.
To reach above-mentioned purpose, second aspect of the present invention embodiment proposes a kind of control dress of condensation fan in refrigerator
Put, including：Temperature detecting unit, for detecting the environment temperature residing for the compressor of the refrigerator；Acquiring unit, for obtaining
The temperature gap between environment temperature residing for given temperature and the compressor, and obtain the rate of change of the temperature gap；
Fuzzy Processing unit, for carrying out Fuzzy processing to the rate of change of the temperature gap and the temperature gap respectively to obtain
Corresponding first fuzzy subset and the second fuzzy subset；Fuzzy control unit, for based on the temperature gap, the temperature difference
Corresponding relation between the rotating speed of the rate of change of value and the condensation fan establishes Fuzzy Math Model；Fuzzy judgment unit, is used for
According to first fuzzy subset and the second fuzzy subset, by calling the Fuzzy Math Model to obtain the condensation fan
Control parameter；Air-blower control unit, for being controlled according to the control parameter to the rotating speed of the condensation fan.
The control device of condensation fan in refrigerator according to embodiments of the present invention, refrigerator is detected by temperature detecting unit
Environment temperature residing for compressor, the temperature between the environment temperature residing for given temperature and compressor is obtained by acquiring unit
Difference, and the rate of change of temperature gap is obtained, then, pass through the change to temperature gap and temperature gap respectively of Fuzzy Processing unit
Rate carries out Fuzzy processing to obtain corresponding first fuzzy subset and the second fuzzy subset, and passes through fuzzy control unit
Corresponding relation between rotating speed based on temperature gap, the rate of change of temperature gap and condensation fan establishes Fuzzy Math Model, most
Afterwards by fuzzy judgment unit according to the first fuzzy subset and the second fuzzy subset, and it is cold to obtain by calling Fuzzy Math Model
The control parameter of solidifying blower fan, and the rotating speed of condensation fan is controlled according to control parameter by air-blower control unit.Should
Device, by using fuzzy control, different control modes is used in different temperature ranges, when environment temperature is close to constant temperature
When spending, using accurate adjustment mode, reduce the rotation speed change amplitude of condensation fan, rotating speed is unlikely to overshoot, when environment temperature to
Constant temperature degree farther out when, using coarse adjustment mode, increase the rotation speed change amplitude of condensation fan so that environment temperature rapidly reach to
Constant temperature degree, so as to real-time and accurately control the rotating speed of condensation fan, the energy consumption of condensation fan can be reduced and subtracted
Few its runs noise.
In addition, can also be had according to the control device of condensation fan in the refrigerator of the above embodiment of the present invention proposition as follows
Additional technical feature：
According to one embodiment of present invention, the rate of change of the temperature gap and the temperature gap is being carried out respectively
Before Fuzzy processing, the Fuzzy Processing unit is additionally operable to carry out the rate of change of the temperature gap and the temperature gap
Discrete processes.
According to one embodiment of present invention, rate of change and the condensating wind of the temperature gap, the temperature gap
Corresponding relation between the rotating speed of machine, including：When the temperature gap be bear, the rate of change of the temperature gap be just, it is described
Environment temperature residing for compressor towards the given temperature direction change and apart from the given temperature farther out when, to described cold
The rotating speed of solidifying blower fan carries out positive coarse adjustment；When the temperature gap be bear, the rate of change of the temperature gap be just, the compression
Environment temperature residing for machine towards the given temperature direction change and apart from the given temperature it is nearer when, to the condensating wind
The rotating speed of machine carries out positive accurate adjustment；When the temperature gap be just, the rate of change of the temperature gap be just, compressor institute
When the environment temperature at place is away from the given temperature direction change, reverse coarse adjustment is carried out to the rotating speed of the condensation fan；Work as institute
State temperature gap be just, the rate of change of the temperature gap be bear, the environment temperature residing for the compressor is towards described given
Temperature direction change and apart from the given temperature it is nearer when, reverse accurate adjustment is carried out to the rotating speed of the condensation fan.
According to one embodiment of present invention, the fuzzy control unit is based on the temperature gap, the temperature difference
When corresponding relation between the rotating speed of the rate of change of value and the condensation fan establishes Fuzzy Math Model, it is additionally operable to be based on the temperature
The corresponding relation spent between difference, the rate of change of the temperature gap and the rotating speed of the condensation fan, and it is fuzzy according to first
The 3rd fuzzy subset corresponding to the rotating speed of subset, second fuzzy subset and the condensation fan generates fuzzy control shape
State table, and fuzzy number conversion is carried out to the fuzzy control state table to obtain the Fuzzy Math Model.
According to one embodiment of present invention, the air-blower control unit according to the control parameter to the condensating wind
When the rotating speed of machine is controlled, the control parameter is multiplied by the preset ratio factor to obtain control electric current, and according to the control
Electric current processed is controlled to the rotating speed of the condensation fan.
To reach above-mentioned purpose, third aspect present invention embodiment proposes cold in a kind of refrigerator, including above-mentioned refrigerator
The control device of solidifying blower fan.
Refrigerator according to embodiments of the present invention, using the control device of condensation fan in above-mentioned refrigerator, using Fuzzy Control
Method processed, different control modes is used in different temperature ranges, when environment temperature is close to given temperature, using accurate adjustment side
Formula, reduce the rotation speed change amplitude of condensation fan, rotating speed is unlikely to overshoot, when environment temperature from given temperature farther out when, adopt
With coarse adjustment mode, the rotation speed change amplitude of condensation fan is increased so that environment temperature rapidly reaches given temperature, so as to
Real-time and the rotating speed of condensation fan is accurately controlled, the energy consumption of condensation fan can be reduced and reduce it and run noise.
Brief description of the drawings
Fig. 1 is the flow chart of the control method of condensation fan in refrigerator according to embodiments of the present invention；
Fig. 2 is the curve map for the damped oscillation that temperature gap according to an embodiment of the invention changes over time；
Fig. 3 is the block diagram of the control device of condensation fan in refrigerator according to embodiments of the present invention；
Fig. 4 is the structural representation of the control device of condensation fan in refrigerator according to an embodiment of the invention；And
Fig. 5 is the block diagram of refrigerator according to embodiments of the present invention.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings the refrigerator and the wherein control method and dress of condensation fan of proposition of the embodiment of the present invention described
Put.
Fig. 1 is the flow chart of the control method of condensation fan in refrigerator according to embodiments of the present invention.
As shown in figure 1, in the refrigerator of the embodiment of the present invention condensation fan control method, it may include following steps：
S1, detect the environment temperature residing for the compressor of refrigerator.
Specifically, the environment temperature residing for the compressor of refrigerator can be detected by the temperature sensor being arranged in refrigerator.
S2, the temperature gap e between environment temperature residing for acquisition given temperature and compressor, and obtain temperature gap
Rate of changeWherein, given temperature can be set according to actual conditions, and given temperature is the pressure of requirement refrigerator
The temperature that environment temperature residing for contracting machine can be finally reached.
S3, respectively to temperature gap e and the rate of change of temperature gapFuzzy processing is carried out to obtain corresponding first mould
Paste subset and the second fuzzy subset.
In one embodiment of the invention, respectively to temperature gap e and the rate of change of temperature gapIt is blurred
Before processing, also respectively to temperature gap e and the rate of change of temperature gapCarry out discrete (quantization) processing, you can respectively by temperature
Spend the rate of change of difference e and temperature gapIt is divided into multiple grades.
Specifically, the regulation temperature range that can choose condensation fan in refrigerator is 50 DEG C~90 DEG C.In view of pair of temperature
The complexity of title property, the fine and smooth degree and control program of control effect, by being divided on the domain of linguistic variable
A limited number of individual grade, for example, linguistic variable E, linguistic variable EC and linguistic variable U can be divided into " honest " (PB),
" center " (PM), " just small " (PS), " zero " (0), " negative small " (NS), " in negative " (NM), " negative big " (NB) } 7 grades.
First, the basic domain (excursion of actual temperature difference) of selected temperature difference e is [- e, e], temperature gap
The domain of e fuzzy set is divided into {-n ,-n+1 ..., 0 ..., n-1, n }, wherein, n desirable 6, that is, realize 6 grade processing
Mode, its quantizing factor may be defined as：In temperature gap e quantizing factor KeAfter it is determined that, any one is in regulation temperature
Temperature gap e in the range of degreeiUnique quantification gradation can be found in the domain of fuzzy set to correspond to therewith, under can belonging to
State one of any range in formula (1), (2) and (3)：
m≤keei≤ m+1, m<n (1)
keei<-n (2)
keei>n (3)
For above-mentioned formula (1), ifThen by the rate of change of temperature gapIt is quantified as m.IfThen by the rate of change of temperature gapIt is quantified as m+1.
For above-mentioned formula (2) and (3), the rate of change of temperature gap is belonged toMore than expected setting, respectively according to most
The rate of change of big temperature gapQuantify.
Based on above-mentioned theory, in one particular embodiment of the present invention, can selected temperature difference e basic domain it is (real
The excursion of border temperature gap) be [- 20,20], the domain of temperature gap e fuzzy set for X=-6, -5 ..., 0 ...,
5,6 }, temperature gap e quantizing factor can be obtainedWherein, n is can be by temperature gap e basic domain
The grade being divided into after temperature gap discrete (quantization) processing of consecutive variations.Choose linguistic variable E 7 domains for PB, PM,
PS, 0, NS, NM, NB }, the assignment table of the first fuzzy subset (linguistic variable E) is obtained, it is as shown in table 1 below.
The assignment table of the fuzzy subset (linguistic variable E) of table 1 first
Any grade n (languages in table 1 in the basic domain [- 20,20] of selected temperature difference e are understood by above-mentioned table 1
Speech variable E) there is at least one degree of membership u1(X) correspond to therewith, and understand each degree of membership u1(X) Linguistic Value corresponding to, you can
Obtain temperature gap e blurring result.
For example, by taking temperature as an example, the temperature gap obtained between the temperature and given temperature residing for compressor is e1,
By formula n=ke·e1It can obtain temperature gap e1Quantification gradation n in the domain X of fuzzy set, and in the first fuzzy subset
The fuzzy set that Linguistic Value corresponding to maximum membership degree is determined on quantification gradation n is searched in the assignment table of (linguistic variable E),
Can must be temperature gap e1Fuzzy representation.If for example, n=ke·e1=-4, searching the first fuzzy subset, (language becomes
Measure E) assignment table 1, obtain quantification gradation -4 degree of membership be 1/3 and 0.5, choose maximum membership degree 0.5 corresponding to language
Linguistic Value in variable E is NM, then fuzzy setTemperature gap e can be obtained1Blurring result.
In one particular embodiment of the present invention, can selected temperature difference rate of changeBasic domain (actual temperature
The excursion of the rate of change of difference) it is [- 15,15], the rate of change of temperature gapFuzzy set domain for X=-6, -
5 ..., 0 ..., 5,6 }, the rate of change of temperature gap can be obtainedQuantizing factorM is can be by temperature gap
Rate of changeBasic domain in consecutive variations temperature gap rate of change discrete (quantization) processing after the grade that is divided into.Choosing
Linguistic variable EC 7 domains { PB, PM, PS, 0, NS, NM, NB } are taken, obtain the assignment of the second fuzzy subset (linguistic variable EC)
Table, it is as shown in table 2 below.
The assignment table of the fuzzy subset (linguistic variable EC) of table 2 second
Rate of change in selected temperature difference is understood by above-mentioned table 2Basic domain [- 15,15] in any grade m
(the linguistic variable EC in table 2) has at least one degree of membership u2(X) correspond to therewith, and understand each degree of membership u2(X) corresponding to
Linguistic Value, you can obtain the rate of change of temperature gapBlurring result.
In one particular embodiment of the present invention, the basic domain that can select the rotation speed change amount u of condensation fan is (actual
The excursion of rotating speed) it is [- 24,24], the domain of the rotation speed change amount u of condensation fan fuzzy set is U={-l ,-l+
1 ..., 0 ..., l-1, l }, wherein, l can use 6, can obtain the relative speed variation u preset ratio factorWherein, l
After can the rate of change discrete (quantization) of the rotating speed of consecutive variations in the rotation speed change amount u of condensation fan basic domain be handled
The grade being divided into.Linguistic variable U 7 domains { PB, PM, PS, 0, NS, NM, NB } are chosen, establish the rotation speed change of condensation fan
The assignment table of the 3rd fuzzy subset (linguistic variable U) corresponding to u is measured, it is as shown in table 3 below.
The assignment table of the fuzzy subset (linguistic variable U) of table 3 the 3rd
Understood by above-mentioned table 3 any etc. in the rotation speed change amount u of selected condensation fan basic domain [- 24,24]
Level l (the linguistic variable U in table 3) has at least one degree of membership u3(X) correspond to therewith, and understand each degree of membership u3(X) it is corresponding
Linguistic Value.
S4, the rate of change based on temperature gap e, temperature gapCorresponding relation between the rotating speed of condensation fan is established
Fuzzy Math Model.
In actual applications, rate of change that can be based on temperature gap e and temperature gapTo the rotating speed of condensation fan in refrigerator
It is controlled, you can a variety of situations occur, and be directed to each situation, make a kind of rational control strategy, and control
Strategy is more, and the sentence of corresponding fuzzy control is also more, can be correspondingly improved control effect.
During refrigerator normal work, temperature gap e change is a damped oscillation song with time t change
Line, the tuning rule of fuzzy control is obtained with reference to Fig. 2.
In a points, such as 90 DEG C of environment temperature is far above such as 70 DEG C of given temperature, and temperature gap e is negative, the change of temperature gap
RateFor just, the environment temperature residing for compressor is towards given temperature direction change, and apart from given temperature also farther out.Now, it is
The speed that environment temperature declines is improved, can increase the control of the rotating speed to condensation fan a bit.
In b points, such as 75 DEG C of environment temperature is slightly larger than such as 70 DEG C of given temperature, and temperature gap e is negative, the change of temperature gap
RateFor just, the environment temperature residing for compressor changes towards given temperature, and nearer apart from given temperature.Now, in order to avoid
Temperature gap e becomes on the occasion of overshoot easily occurs in system, can reduce the control of the rotating speed to condensation fan a bit, so more than 0 value
It may be such that temperature gap e more smoothly close to 0 value.
In c points, such as 62 DEG C of environment temperature is less than such as 70 DEG C of given temperature, and temperature gap e is the just rate of change of temperature gapFor just, the environment temperature residing for compressor is away from given temperature direction change., can be if the rotating speed of condensation fan is higher
Cause to waste in energy consumption and to run noise larger.Now, in order that temperature gap e is inhibited as early as possible, and become to 0 value direction
Change, the Reverse Turning Control of the rotating speed to condensation fan a bit can be increased.
In d points, such as 66 DEG C of environment temperature is less than such as 70 DEG C of given temperature, and temperature gap e is the just rate of change of temperature gapIt is negative, environment temperature residing for compressor is and nearer apart from given temperature towards given temperature direction change.Now, in order that
Temperature gap e more smoothly reaches 0 value, and occurs without larger overshoot, can reduce the reverse control of the rotating speed to condensation fan a bit
System.
Say, when temperature gap e is negative, temperature gap rate of changeFor the environment temperature just, residing for compressor towards to
Constant temperature degree direction change and apart from given temperature farther out when, positive coarse adjustment is carried out to the rotating speed of condensation fan；When temperature gap e is
The negative, rate of change of temperature gapFor the environment temperature just, residing for compressor constant temperature is given towards given temperature direction change and distance
When degree is nearer, positive accurate adjustment is carried out to the rotating speed of condensation fan；When temperature gap e be just, the rate of change of temperature gapFor just,
When environment temperature residing for compressor is away from given temperature direction change, reverse coarse adjustment is carried out to the rotating speed of condensation fan；Work as temperature
Spend difference e for just, the rate of change of temperature gapFor the environment temperature residing for negative, compressor towards given temperature direction change and
Apart from given temperature it is nearer when, reverse accurate adjustment is carried out to the rotating speed of condensation fan.
Specifically, rate of change that can be based on said temperature difference e, temperature gapPair between the rotating speed of condensation fan
It should be related to, and the Linguistic Value according to corresponding to the first fuzzy subset can obtain temperature gap eSecond fuzzy subset can obtain temperature gap
Rate of changeCorresponding Linguistic ValueAnd the 3rd fuzzy subset corresponding to the rotating speed of condensation fan generates fuzzy control shape
State table, it is as shown in table 4 below.
The fuzzy control state table of table 4
From above-mentioned table 4, if Linguistic ValueFor NB, Linguistic ValueIt is for NB, then cold knowable to above-mentioned table 4 by searching
Linguistic Value corresponding to the rotating speed of solidifying blower fan is also NB.
Specifically, after fuzzy control state table is generated, it is fuzzy to obtain that fuzzy number conversion is carried out to fuzzy control state
Exponential model, it is as shown in table 5 below.
The Fuzzy Math Model of table 5
The Fuzzy Math Model such as table 5 of the rotating speed of condensation fan in refrigerator is established by offline mode, is stored in calculating
On the memory of machine, and a subprogram for inquiring about the table can be write, can the easy-to-look-up control to fuzzy controller output
Parameter
S5, according to the first fuzzy subset and the second fuzzy subset, by calling Fuzzy Math Model to obtain condensation fan
Control parameterAnd according to control parameterThe rotating speed of condensation fan is controlled.
By calling Fuzzy Math Model to obtain the control parameter of condensation fanAfterwards, by control parameterIt is multiplied by default ratio
Example factor KuTo obtain control electric current, and the rotating speed of condensation fan is controlled according to control electric current.
In summary, in refrigerator according to embodiments of the present invention condensation fan control method, first, detect the pressure of refrigerator
Environment temperature residing for contracting machine, and the temperature gap between given temperature and environment temperature residing for compressor is obtained, and obtain
The rate of change of temperature gap is taken, then, Fuzzy processing is carried out to the rate of change of temperature gap and temperature gap to obtain respectively
Corresponding first fuzzy subset and the second fuzzy subset, and rate of change and condensation fan based on temperature gap, temperature gap
Rotating speed between corresponding relation establish Fuzzy Math Model, finally, according to the first fuzzy subset and the second fuzzy subset, pass through tune
With Fuzzy Math Model to obtain the control parameter of condensation fan, and the rotating speed of condensation fan is controlled according to control parameter.
This method, using fuzzy control method, different control modes is used in different temperature ranges, when environment temperature is close given
During temperature, using accurate adjustment mode, reduce the rotation speed change amplitude of condensation fan, rotating speed is unlikely to overshoot, when environment temperature from
Given temperature farther out when, using coarse adjustment mode, increase the rotation speed change amplitude of condensation fan so that environment temperature rapidly reaches
Given temperature, so as to real-time and accurately control the rotating speed of condensation fan, the energy consumption of condensation fan can be reduced simultaneously
Reduce it and run noise.
Fig. 3 is the control device of condensation fan in refrigerator according to embodiments of the present invention.As shown in figure 3, the present invention is implemented
The control device of condensation fan may include temperature detecting unit 10, acquiring unit 20, Fuzzy Processing unit 30, mould in the refrigerator of example
Paste control unit 40, fuzzy judgment unit 50 and air-blower control unit 60.
Wherein, temperature detecting unit 10 can be used for the environment temperature residing for the compressor of detection refrigerator.Acquiring unit 20 can
For obtaining the temperature gap e between given temperature and environment temperature residing for compressor, and obtain the rate of change of temperature gapFuzzy Processing unit 30 can be used for respectively to temperature gap e and the rate of change of temperature gapFuzzy processing is carried out to obtain
Corresponding first fuzzy subset and the second fuzzy subset.Fuzzy control unit 40 can be used for based on temperature gap e, temperature gap
Rate of changeCorresponding relation between the rotating speed of condensation fan establishes Fuzzy Math Model.Fuzzy judgment unit 50 can be used for basis
First fuzzy subset and the second fuzzy subset, the control parameter of condensation fan is obtained by calling Fuzzy Math Model.Blower fan control
Unit 60 processed can be used for being controlled the rotating speed of condensation fan according to control parameter.
Specifically, the compressor of refrigerator can be detected by such as temperature sensor of temperature detecting unit 10 being arranged in refrigerator
Residing environment temperature.As shown in figure 4, the environment temperature residing for compressor can be added and subtracted with given temperature by comparison point
Compare to obtain temperature gap e therebetween, and the rate of change of temperature gap is obtained by differentiatorWherein,
Given temperature can be set according to actual conditions, and given temperature is the environment temperature energy residing for the compressor of requirement refrigerator
The temperature being enough finally reached.
In one embodiment of the invention, as shown in figure 4, respectively to temperature gap e and the rate of change of temperature gap
, can be by Fuzzy Processing unit 30 respectively to temperature gap e and the rate of change of temperature gap before carrying out Fuzzy processingCarry out
Discrete (quantization) is handled, you can respectively by temperature gap e and the rate of change of temperature gapIt is divided into multiple grades.
Specifically, the regulation temperature range that can choose condensation fan in refrigerator is 50 DEG C~90 DEG C.In view of pair of temperature
The complexity of title property, the fine and smooth degree and control program of control effect, by being divided on the domain of linguistic variable
A limited number of individual grade, for example, linguistic variable E, linguistic variable EC and linguistic variable U can be divided into " honest " (PB),
" center " (PM), " just small " (PS), " zero " (0), " negative small " (NS), " in negative " (NM), " negative big " (NB) } 7 grades.
First, the basic domain (excursion of actual temperature difference) of selected temperature difference e is [- e, e], temperature gap
The domain of e fuzzy set is divided into {-n ,-n+1 ..., 0 ..., n-1, n }, wherein, n desirable 6, that is, realize 6 grade processing
Mode, its quantizing factor may be defined as：After temperature gap e quantizing factor determines, any one is in regulation temperature
In the range of temperature gap only one quantification gradation can be found in the domain of fuzzy set correspond to therewith.
Based on above-mentioned theory, in one particular embodiment of the present invention, can selected temperature difference e basic domain it is (real
The excursion of border temperature gap) be [- 20,20], the domain of temperature gap e fuzzy set for X=-6, -5 ..., 0 ...,
5,6 }, temperature gap e quantizing factor can be obtainedWherein, n is can be by temperature gap e basic domain
The grade being divided into after temperature gap discrete (quantization) processing of consecutive variations.Choose linguistic variable E 7 domains for PB, PM,
PS, 0, NS, NM, NB }, the assignment table of the first fuzzy subset (linguistic variable E) of acquisition, as shown in Table 1 above.Can by above-mentioned table 1
Know that any grade n (the linguistic variable E in table 1) in the basic domain [- 20,20] of selected temperature difference e has at least one
Individual degree of membership u1(X) correspond to therewith, and understand each degree of membership u1(X) Linguistic Value corresponding to, you can obtain the fuzzy of temperature gap e
Change result.
For example, by taking temperature as an example, the temperature gap obtained between the temperature and given temperature residing for compressor is e1,
By formula n=ke·e1It can obtain temperature gap e1Quantification gradation n in the domain X of fuzzy set, and in the first fuzzy subset
The fuzzy set that Linguistic Value corresponding to maximum membership degree is determined on quantification gradation n is searched in the assignment table of (linguistic variable E),
Can must be temperature gap e1Fuzzy representation.If for example, n=ke·e1=-4, searching the first fuzzy subset, (language becomes
Measure E) assignment table 1, obtain quantification gradation -4 degree of membership be 1/3 and 0.5, choose maximum membership degree 0.5 corresponding to language
Linguistic Value in variable E is NM, then fuzzy setTemperature gap e can be obtained1Blurring result.
In one particular embodiment of the present invention, can selected temperature difference rate of changeBasic domain (actual temperature
The excursion of the rate of change of difference) it is [- 15,15], the rate of change of temperature gapFuzzy set domain for X=-6, -
5 ..., 0 ..., 5,6 }, the rate of change of temperature gap can be obtainedQuantizing factorM is can be by temperature gap
Rate of changeBasic domain in consecutive variations temperature gap rate of change discrete (quantization) processing after the grade that is divided into.Choosing
Linguistic variable EC 7 domains { PB, PM, PS, 0, NS, NM, NB } are taken, obtain the assignment of the second fuzzy subset (linguistic variable EC)
Table, as shown in Table 2 above.Rate of change in selected temperature difference is understood by above-mentioned table 2Basic domain [- 15,15] in appoint
One grade m (the linguistic variable EC in table 2) has at least one degree of membership u2(X) correspond to therewith, and understand each degree of membership u2
(X) Linguistic Value corresponding to, you can obtain the rate of change of temperature gapBlurring result.
In one particular embodiment of the present invention, the basic domain that can select the rotation speed change amount u of condensation fan is (actual
The excursion of rotating speed) it is [- 24,24], the domain of the rotation speed change amount u of condensation fan fuzzy set is U={-l ,-l+
1 ..., 0 ..., l-1, l }, wherein, l can use 6, can obtain the rotation speed change amount u preset ratio factorWherein, l
After can the rate of change discrete (quantization) of the rotating speed of consecutive variations in the rotation speed change amount u of condensation fan basic domain be handled
The grade being divided into.Linguistic variable U 7 domains { PB, PM, PS, 0, NS, NM, NB } are chosen, establish the rotation speed change of condensation fan
The assignment table of the 3rd fuzzy subset (linguistic variable U) corresponding to u is measured, as shown in Table 3 above.Understood by above-mentioned table 3 selected
Any grade l (the linguistic variable U in table 3) in the rotation speed change amount u of condensation fan basic domain [- 24,24] have to
A few degree of membership u3(X) correspond to therewith, and understand each degree of membership u3(X) Linguistic Value corresponding to.
In actual applications, rate of change that can be based on temperature gap e and temperature gapTo the rotating speed of condensation fan in refrigerator
It is controlled, you can a variety of situations occur, and be directed to each situation, make a kind of rational control strategy, and control
Strategy is more, and the sentence of corresponding fuzzy control is also more, can be correspondingly improved control effect.
During refrigerator normal work, temperature gap e change is a damped oscillation song with time t change
Line, the tuning rule of fuzzy control is obtained with reference to Fig. 2.
In a points, such as 90 DEG C of environment temperature is far above such as 70 DEG C of given temperature, and temperature gap e is negative, the change of temperature gap
RateFor just, the environment temperature residing for compressor is towards given temperature direction change, and apart from given temperature also farther out.Now, it is
The speed that environment temperature declines is improved, can increase the control of the rotating speed to condensation fan a bit.
In b points, such as 75 DEG C of environment temperature is slightly larger than such as 70 DEG C of given temperature, and temperature gap e is negative, the change of temperature gap
RateFor just, the environment temperature residing for compressor changes towards given temperature, and nearer apart from given temperature.Now, in order to avoid
Temperature gap e becomes on the occasion of overshoot easily occurs in system, can reduce the control of the rotating speed to condensation fan a bit, so more than 0 value
It may be such that temperature gap e more smoothly close to 0 value.
In c points, such as 62 DEG C of environment temperature is less than such as 70 DEG C of given temperature, and temperature gap e is the just rate of change of temperature gapFor just, the environment temperature residing for compressor is away from given temperature direction change., can be if the rotating speed of condensation fan is higher
Cause to waste in energy consumption and to run noise larger.Now, in order that temperature gap e is inhibited as early as possible, and become to 0 value direction
Change, the Reverse Turning Control of the rotating speed to condensation fan a bit can be increased.
In d points, such as 66 DEG C of environment temperature is less than such as 70 DEG C of given temperature, and temperature gap e is the just rate of change of temperature gapIt is negative, environment temperature residing for compressor is and nearer apart from given temperature towards given temperature direction change.Now, in order that
Temperature gap e more smoothly reaches 0 value, and occurs without larger overshoot, can reduce the reverse control of the rotating speed to condensation fan a bit
System.
Say, when temperature gap e is negative, temperature gap rate of changeFor the environment temperature just, residing for compressor towards to
Constant temperature degree direction change and apart from given temperature farther out when, positive coarse adjustment is carried out to the rotating speed of condensation fan；When temperature gap e is
The negative, rate of change of temperature gapFor the environment temperature just, residing for compressor constant temperature is given towards given temperature direction change and distance
When degree is nearer, positive accurate adjustment is carried out to the rotating speed of condensation fan；When temperature gap e be just, the rate of change of temperature gapFor just,
When environment temperature residing for compressor is away from given temperature direction change, reverse coarse adjustment is carried out to the rotating speed of condensation fan；Work as temperature
Spend difference e for just, the rate of change of temperature gapFor the environment temperature residing for negative, compressor towards given temperature direction change and
Apart from given temperature it is nearer when, reverse accurate adjustment is carried out to the rotating speed of condensation fan.
In one embodiment of the invention, fuzzy control unit 40 is in the rate of change based on temperature gap e, temperature gapWhen corresponding relation between the rotating speed of condensation fan establishes Fuzzy Math Model, it is additionally operable to based on temperature gap e, temperature gap
Rate of changeCorresponding relation between the rotating speed of condensation fan, and according to corresponding to the first fuzzy subset can obtain temperature gap e
Linguistic ValueSecond fuzzy subset can obtain the rate of change of temperature gapCorresponding Linguistic ValueAnd the rotating speed institute of condensation fan
Corresponding 3rd fuzzy subset generates fuzzy control state table, as shown in Table 4 above, and carries out mould to fuzzy control state table
Number conversion is pasted to obtain Fuzzy Math Model, as shown in Table 5 above.
The Fuzzy Math Model such as table 5 of the rotating speed of condensation fan in refrigerator is established by offline mode, is stored in calculating
On the memory of machine, and a subprogram for inquiring about the table can be write, can the easy-to-look-up control to fuzzy controller output
Parameter
In one embodiment of the invention, as shown in figure 4, air-blower control unit 60 according to control parameter to condensating wind
When the rotating speed of machine is controlled, control parameter is multiplied by preset ratio factor KuTo obtain control electric current, and according to control electric current
The rotating speed of condensation fan is controlled.
Specifically, as shown in figure 5, exporting the control parameter of condensation fan in fuzzy judgment unit 50Afterwards, by control parameterIt is multiplied by preset ratio factor KuTo obtain control electric current, and control electric current is inputed to the master control borad of condensation fan, master control borad can
The rotating speed of condensation fan is controlled according to control electric current.
The control device of condensation fan in refrigerator according to embodiments of the present invention, refrigerator is detected by temperature detecting unit
Environment temperature residing for compressor, the temperature between the environment temperature residing for given temperature and compressor is obtained by acquiring unit
Difference, and the rate of change of temperature gap is obtained, then, pass through the change to temperature gap and temperature gap respectively of Fuzzy Processing unit
Rate carries out Fuzzy processing to obtain corresponding first fuzzy subset and the second fuzzy subset, and passes through fuzzy control unit
Corresponding relation between rotating speed based on temperature gap, the rate of change of temperature gap and condensation fan establishes Fuzzy Math Model, most
Afterwards by fuzzy judgment unit according to the first fuzzy subset and the second fuzzy subset, and it is cold to obtain by calling Fuzzy Math Model
The control parameter of solidifying blower fan, and the rotating speed of condensation fan is controlled according to control parameter by air-blower control unit.Should
Device, by fuzzy control, different control modes is used in different temperature ranges, when environment temperature is close to given temperature
When, using accurate adjustment mode, reduce the rotation speed change amplitude of condensation fan, rotating speed is unlikely to overshoot, when environment temperature is from given
Temperature farther out when, using coarse adjustment mode, increase condensation fan amplitude of variation so that environment temperature rapidly reaches given temperature,
So as to real-time and accurately control the rotating speed of condensation fan, the energy consumption of condensation fan can be reduced and reduce its operation
Noise.
Based on above-described embodiment, the invention also provides a kind of refrigerator 1000.
Fig. 5 is the block diagram of refrigerator according to embodiments of the present invention.As shown in figure 5, the refrigerator of the embodiment of the present invention,
It may include the control device 100 of condensation fan in above-mentioned refrigerator.
It should be noted that the details not disclosed in the refrigerator 1000 of the embodiment of the present invention, refer to the embodiment of the present invention
Refrigerator in condensation fan control device 100 disclosed in details, it is specific that I will not elaborate.
Refrigerator according to embodiments of the present invention, using the control device of condensation fan in above-mentioned refrigerator, using Fuzzy Control
Method processed, different control modes is used in different temperature ranges, when environment temperature is close to given temperature, using accurate adjustment side
Formula, reduce the rotation speed change amplitude of condensation fan, rotating speed is unlikely to overshoot, when environment temperature from given temperature farther out when, adopt
With coarse adjustment mode, condensation fan amplitude of variation is increased so that environment temperature rapidly reaches given temperature, so as to fast in real time
Speed and accurately control the rotating speed of condensation fan, the energy consumption of condensation fan can be reduced and reduce its run noise.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, it is for only for ease of and describes the present invention and simplify description, rather than indicates or imply that signified device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two, three
It is individual etc., unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or electrically connect；Can be joined directly together, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements, limited unless otherwise clear and definite.For one of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the different embodiments or example and the feature of different embodiments or example described in this specification
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (11)
1. the control method of condensation fan in a kind of refrigerator, it is characterised in that comprise the following steps：
Detect the environment temperature residing for the compressor of the refrigerator；
The temperature gap between environment temperature residing for acquisition given temperature and the compressor, and obtain the temperature gap
Rate of change；
Fuzzy processing is carried out to the rate of change of the temperature gap and the temperature gap to obtain corresponding first mould respectively
Paste subset and the second fuzzy subset；
Corresponding relation between rotating speed based on the temperature gap, the rate of change of the temperature gap and the condensation fan is built
Vertical Fuzzy Math Model；
According to first fuzzy subset and the second fuzzy subset, by calling the Fuzzy Math Model to obtain the condensating wind
The control parameter of machine, and the rotating speed of the condensation fan is controlled according to the control parameter.
2. the control method of condensation fan in refrigerator as claimed in claim 1, it is characterised in that respectively to the temperature difference
Before the rate of change of value and the temperature gap carries out Fuzzy processing, also respectively to the temperature gap and the temperature gap
Rate of change carry out discrete processes.
3. the control method of condensation fan in refrigerator as claimed in claim 1, it is characterised in that the temperature gap, described
Corresponding relation between the rotating speed of the rate of change of temperature gap and the condensation fan, including：
When the temperature gap be bear, the rate of change of the temperature gap be environment temperature just, residing for the compressor towards
The given temperature direction change and apart from the given temperature farther out when, the rotating speed of the condensation fan is carried out positive thick
Adjust；
When the temperature gap be bear, the rate of change of the temperature gap be environment temperature just, residing for the compressor towards
The given temperature direction change and apart from the given temperature it is nearer when, positive essence is carried out to the rotating speed of the condensation fan
Adjust；
When the temperature gap be just, the rate of change of the temperature gap be that environment temperature just, residing for the compressor is remote
During the given temperature direction change, reverse coarse adjustment is carried out to the rotating speed of the condensation fan；
When the temperature gap be just, the rate of change of the temperature gap be bear, the environment temperature residing for the compressor towards
The given temperature direction change and apart from the given temperature it is nearer when, reversely essence is carried out to the rotating speed of the condensation fan
Adjust.
4. the control method of condensation fan in refrigerator as claimed in claim 3, it is characterised in that based on the temperature gap,
Corresponding relation between the rotating speed of the rate of change of the temperature gap and the condensation fan establishes Fuzzy Math Model, including：
Corresponding relation between rotating speed based on the temperature gap, the rate of change of the temperature gap and the condensation fan,
And the 3rd fuzzy subset according to corresponding to the rotating speed of the first fuzzy subset, second fuzzy subset and the condensation fan
Generate fuzzy control state table；
Fuzzy number conversion is carried out to the fuzzy control state table to obtain the Fuzzy Math Model.
5. the control method of condensation fan in the refrigerator as any one of claim 1-4, it is characterised in that according to described
Control parameter is controlled to the rotating speed of the condensation fan, including：
The control parameter is multiplied by the preset ratio factor to obtain control electric current；
The rotating speed of the condensation fan is controlled according to the control electric current.
A kind of 6. control device of condensation fan in refrigerator, it is characterised in that including：
Temperature detecting unit, for detecting the environment temperature residing for the compressor of the refrigerator；
Acquiring unit, for obtaining the temperature gap between given temperature and environment temperature residing for the compressor, and obtain
The rate of change of the temperature gap；
Fuzzy Processing unit, for respectively to the rate of change of the temperature gap and the temperature gap carry out Fuzzy processing with
Obtain corresponding first fuzzy subset and the second fuzzy subset；
Fuzzy control unit, for based on the temperature gap, the rate of change of the temperature gap and turning for the condensation fan
Corresponding relation between speed establishes Fuzzy Math Model；
Fuzzy judgment unit, for according to first fuzzy subset and the second fuzzy subset, by calling the fuzzy digital-to-analogue
Type is to obtain the control parameter of the condensation fan；
Air-blower control unit, for being controlled according to the control parameter to the rotating speed of the condensation fan.
7. the control device of condensation fan in refrigerator as claimed in claim 6, it is characterised in that respectively to the temperature difference
Before the rate of change of value and the temperature gap carries out Fuzzy processing, the Fuzzy Processing unit is additionally operable to the temperature difference
The rate of change of value and the temperature gap carries out discrete processes.
8. the control device of condensation fan in refrigerator as claimed in claim 6, it is characterised in that the temperature gap, described
Corresponding relation between the rotating speed of the rate of change of temperature gap and the condensation fan, including：
When the temperature gap be bear, the rate of change of the temperature gap be environment temperature just, residing for the compressor towards
The given temperature direction change and apart from the given temperature farther out when, the rotating speed of the condensation fan is carried out positive thick
Adjust；
When the temperature gap be bear, the rate of change of the temperature gap be environment temperature just, residing for the compressor towards
The given temperature direction change and apart from the given temperature it is nearer when, positive essence is carried out to the rotating speed of the condensation fan
Adjust；
When the temperature gap be just, the rate of change of the temperature gap be that environment temperature just, residing for the compressor is remote
During the given temperature direction change, reverse coarse adjustment is carried out to the rotating speed of the condensation fan；
When the temperature gap be just, the rate of change of the temperature gap be bear, the environment temperature residing for the compressor towards
The given temperature direction change and apart from the given temperature it is nearer when, reversely essence is carried out to the rotating speed of the condensation fan
Adjust.
9. the control device of condensation fan in refrigerator as claimed in claim 8, it is characterised in that the fuzzy control unit exists
Corresponding relation between rotating speed based on the temperature gap, the rate of change of the temperature gap and the condensation fan establishes mould
When pasting exponential model, be additionally operable to rate of change and the condensation fan based on the temperature gap, the temperature gap rotating speed it
Between corresponding relation, and according to corresponding to the rotating speed of the first fuzzy subset, second fuzzy subset and the condensation fan
The 3rd fuzzy subset generate fuzzy control state table, and fuzzy number conversion is carried out to the fuzzy control state table to obtain
The Fuzzy Math Model.
10. the control device of condensation fan in the refrigerator as any one of claim 6-9, it is characterised in that the wind
The control parameter is multiplied by by machine control unit when being controlled according to the control parameter to the rotating speed of the condensation fan
The preset ratio factor is controlled with obtaining control electric current according to the control electric current to the rotating speed of the condensation fan.
11. a kind of refrigerator, it is characterised in that include the control of condensation fan in the refrigerator as any one of claim 6-10
Device processed.
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| CN201710214374.7A CN107421190A (en) | 2017-04-01 | 2017-04-01 | The control method and device of refrigerator and wherein condensation fan |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111365938A (en) * | 2020-03-20 | 2020-07-03 | 长虹美菱股份有限公司 | Method for accurately controlling temperature of warm storage of independent refrigerating system chamber |
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