CN106885429B - A kind of refrigerator defrosting control method and device, refrigerator - Google Patents
A kind of refrigerator defrosting control method and device, refrigerator Download PDFInfo
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- CN106885429B CN106885429B CN201710161886.1A CN201710161886A CN106885429B CN 106885429 B CN106885429 B CN 106885429B CN 201710161886 A CN201710161886 A CN 201710161886A CN 106885429 B CN106885429 B CN 106885429B
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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
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/002—Defroster control
- F25D21/008—Defroster control by timer
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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
- F25D29/003—Arrangement or mounting of control or safety devices for movable devices
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- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Defrosting Systems (AREA)
Abstract
The embodiment of the present invention provides a kind of refrigerator defrosting control method and device, refrigerator, is related to refrigeration technology field, provides a kind of simple refrigerator defrosting control mode, enough guarantee defrosting effect while so that refrigerator has apparent energy-saving effect.This method includes, and in refrigeration for refrigerator operational process, starts timing after refrigerator starts defrost operation；Add up the number that starting second mode defrost is run after judging refrigerator self-starting first mode defrost operation after timing to scheduled duration, wherein, first mode defrost is operated to constant power defrost until evaporator temperature reaches predetermined temperature, and second mode defrost operates in predetermined defrost operation duration with constant power defrost；When the number of accumulative starting second mode defrost operation is greater than or equal to M times, then start first mode defrost operation, and when the temperature of the evaporator of refrigerator reaches the operation of first mode defrost described in predetermined temperature backed off after random.Wherein, the embodiment of the present invention is used for refrigerator defrost.
Description
Technical field
The embodiment of the present invention is related to refrigeration technology field more particularly to a kind of refrigerator defrosting control method and device, ice
Case.
Background technique
It is higher and higher to the horsepower requirements of refrigerator at present under the requirement of power-saving technology.Wherein, the defrost of frost-free refrigerator exists
The ratio occupied in total energy consumption is higher, therefore how to reduce defrost energy consumption is always the direction that each company is studied jointly.Existing skill
Defrost mostly uses the mode of external heat source to complete in art, to add additional thermic load.
Currently, the defrost of refrigerator is mainly based upon the length of each defrost runing time and per defrost twice between operation
The conceptual design of interval time progress defrost.The length of defrost runing time refers to the length of time heated when each defrost.Change
It is to be heated by electricity to heating tube directly on evaporator of refrigerator when frost operation, to eliminate frost on an evaporator, thus is straight
It connects and generates heat in refrigerator.This process increases the thermic load of refrigerator, later again by the refrigeration of compressor come these
Thermic load removes, to generate additional energy loss.Therefore heating time is shorter, then the heat generated is also smaller, to energy consumption
Influence it is also fewer.The comparison of this length of time is based in identical heating power.For same refrigerator, heating
In the case where power increase, total heating time can also shorten, but the heat heated does not have big variation.This point it may be said that
Bright, the energy that each defrost of refrigerator needs is similar, so to change defrost runing time when heating power is specified
Length is general to be less likely.Another is the time of defrost interval, and interval time is longer, then defrost operation energy consumption
Average value is smaller.But the length of this interval time, also there is various requirement in a standard.And the time of defrost interval
Longer, evaporimeter frosting is more serious, in the ventilation for influencing evaporator, also will affect refrigerating efficiency and increases energy consumption.Defrost fortune
Capable exits mainly by the way that the temperature controller control of specific position (such as evaporator top) on an evaporator is arranged, and works as temperature
When controller detects that the temperature on evaporator top reaches specified value (being typically set at 5 °), defrost operation is exited.
And in the prior art, it is mainly based upon the design that above-mentioned principle carries out defrost scheme.The prior art is mentioned below
The technical solution of confession is illustrated, scheme one: the number of refrigerator open is obtained, when the number of refrigerator open is more, and increaseization
The number of frost operation, but exiting for defrost operation is controlled by temperature controller, therefore there is no the times for shortening defrost operation, only
It is the interval time for changing defrost operation.Scheme two: obtaining the cumulative time of refrigerator open, according to the refrigerator open cumulative time
Variation come change defrost operation when interval time, if opening time be more than setting time, it is thus regarded that refrigerator need plus
The time interval of fast defrost operation, and exiting for defrost operation is controlled by temperature controller, therefore opening time in this kind of mode
The cumulative time of longer refrigerator defrost operation is also longer, and the interval time of defrost operation is shorter.Scheme three: it is opened the door by accumulative
Time calculates control defrost with number and runs the temperature exited, passes through the parameter for obtaining environment temperature and ambient humidity, calculates
It into the water of refrigerator, then calculates defrost and runs the temperature that exits, exited when defrost runs to evaporator temperature to meet
When temperature, defrost operation is exited, the time of defrost operation is reduced with this.
It is that the mode exited is run using the temperature control defrost of detection evaporator, wherein side in above-mentioned three kinds of schemes
In case one and two, due to needing temperature control to exit defrost operation, and every time defrost operation can complete defrost, however frosting degree
When less, the normal operation of refrigerator is had no effect on, therefore energy consumption is larger；Although in scheme three defrost can be exited by control
The temperature of operation incomplete defrost subzero with energy saving, but this controlling mechanism needs transporting to defrost repeatedly
It is capable exit temperature calculate it is complex.
Summary of the invention
The embodiment of the present invention provides a kind of refrigerator defrosting control method and device, refrigerator, provides a kind of simple ice
While case defrosting control mode, enough guarantee defrosting effect, so that refrigerator has apparent energy-saving effect.
In a first aspect, a kind of refrigerator defrosting control method is provided,
In refrigeration for refrigerator operational process, start timing after refrigerator starts defrost operation；
Add up starting second mode after judging refrigerator self-starting first mode defrost operation after timing to scheduled duration
The number of frost operation, wherein the first mode defrost is operated to constant power defrost until evaporator temperature reaches predetermined
Temperature, second mode defrost operate in predetermined defrost operation duration with constant power defrost；
When the number of accumulative starting second mode defrost operation is greater than or equal to M times, then start first mode defrost fortune
Row, and when the temperature of the evaporator of refrigerator reaches the operation of first mode defrost described in predetermined temperature backed off after random.
Second aspect provides a kind of refrigerator defrosting control device, comprising:
Timing unit, for starting timing after refrigerator starts defrost operation in refrigeration for refrigerator operational process；
Counting unit, for judging refrigerator self-starting first mode defrost after the timing unit timing to scheduled duration
Add up the number of starting second mode defrost operation after operation, wherein the first mode defrost is operated to constant power
Until evaporator temperature reaches predetermined temperature, second mode defrost operates in predetermined defrost operation duration with constant power frost
Defrost；
The number of defrosting control unit, the accumulative starting second mode defrost operation for obtaining when the counting unit is big
When M times, then start first mode defrost operation, and when the temperature of the evaporator of refrigerator reaches predetermined temperature retrogressing
The first mode defrost operation out.
The third aspect provides a kind of refrigerator, including above-mentioned refrigerator defrosting control device.
In the above scheme, in refrigeration for refrigerator operational process, start timing after refrigerator starts defrost operation；When
Add up the secondary of starting second mode defrost operation after judging refrigerator self-starting first mode defrost operation after timing to scheduled duration
Number, wherein first mode defrost is operated to constant power defrost until evaporator temperature reaches predetermined temperature, second mode
Frost operates in predetermined defrost operation duration with constant power defrost；When the number of accumulative starting second mode defrost operation is big
When M times, then start first mode defrost operation, and when the temperature of the evaporator of refrigerator reaches predetermined temperature retrogressing
The first mode defrost operation out.Wherein, refrigerator can be spaced scheduled duration according to first mode during refrigerating operaton
Defrost operation carries out defrosting operation, carries out first mode defrost fortune after the second mode defrost operation for adding up several numbers
Row carries out primary thorough defrost, since the power of second mode defrost operation is fixed and defrost operation duration is adjustable,
Power consumption can be reduced as far as possible by running local defrost by second mode defrost when evaporimeter frosting is not serious under regular situation；And
When evaporimeter frosting is serious, run by first mode defrost so that the temperature of evaporator reaches predetermined temperature and carries out thorough defrost
While can guaranteeing the normal operation of refrigerator, therefore can guarantee defrosting effect, so that refrigerator has apparent energy-saving effect.
In addition, being calculated in the program without the temperature that exits run to defrost repeatedly, it is only necessary to coordinate two kinds of defrosts operation moulds
The conversion of formula, project plan comparison are simple.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of refrigerator defrosting control method flow diagram provided in an embodiment of the present invention；
Fig. 2 be another embodiment of the present invention provides a kind of refrigerator defrosting control method flow diagram；
Fig. 3 is a kind of refrigerator defrosting control mode flow diagram provided in an embodiment of the present invention；
Fig. 4 be another embodiment of the present invention provides a kind of refrigerator defrosting control mode flow diagram；
Fig. 5 is a kind of refrigerator defrosting control device structural schematic diagram that the embodiment of the present invention provides；
Fig. 6 is a kind of refrigerator defrosting control device structural schematic diagram that another embodiment of the present invention provides.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Shown in referring to Fig.1, the embodiment of the present invention provides a kind of refrigerator defrosting control method, includes the following steps:
101, in refrigeration for refrigerator operational process, start timing after refrigerator starts defrost operation.
102, add up the second mould of starting after judging refrigerator self-starting first mode defrost operation after timing to scheduled duration
The number of formula defrost operation, wherein first mode defrost is operated to constant power defrost until evaporator temperature reaches predetermined
Temperature, second mode defrost operate in predetermined defrost operation duration with constant power defrost.
Wherein, scheduled duration is greater than or equal to the time interval between the adjacent defrost of second mode twice operation.
103, when the number of accumulative starting second mode defrost operation is greater than or equal to M times, then start first mode
Frost operation, and when the temperature of evaporator of refrigerator reaches predetermined temperature backed off after random first mode defrost operation.
In the above scheme, in refrigeration for refrigerator operational process, start timing after refrigerator starts defrost operation；When
Add up the secondary of starting second mode defrost operation after judging refrigerator self-starting first mode defrost operation after timing to scheduled duration
Number, wherein first mode defrost is operated to constant power defrost until evaporator temperature reaches predetermined temperature, second mode
Frost operates in predetermined defrost operation duration with constant power defrost；When the number of accumulative starting second mode defrost operation is big
When M times, then start first mode defrost operation, and when the temperature of the evaporator of refrigerator reaches predetermined temperature retrogressing
The first mode defrost operation out.Wherein, refrigerator can be spaced scheduled duration according to first mode during refrigerating operaton
Defrost operation carries out defrosting operation, carries out first mode defrost fortune after the second mode defrost operation for adding up several numbers
Row carries out primary thorough defrost, since the power of second mode defrost operation is fixed and defrost operation duration is adjustable,
Power consumption can be reduced as far as possible by running local defrost by second mode defrost when evaporimeter frosting is not serious under regular situation；And
When evaporimeter frosting is serious, run by first mode defrost so that the temperature of evaporator reaches predetermined temperature and carries out thorough defrost
While can guaranteeing the normal operation of refrigerator, therefore can guarantee defrosting effect, so that refrigerator has apparent energy-saving effect.
In addition, being calculated in the program without the temperature that exits run to defrost repeatedly, it is only necessary to coordinate two kinds of defrosts operation moulds
The conversion of formula, project plan comparison are simple.
Referring to shown in Fig. 2, another embodiment of the present invention provides a kind of refrigerator defrosting control method, includes the following steps:
201, refrigerator starting refrigeration.
202, timing is started by timer after refrigerator starting refrigeration, judges whether timing reaches scheduled duration.
The scheduled duration is defined as the defrost cumulative time, and scheduled duration is greater than or equal to adjacent second mode defrost twice
Time interval between operation.If otherwise continuing to run refrigeration；If so then execute step 203.
203, add up starting second mode defrost operation after judging refrigerator self-starting refrigeration after timing to scheduled duration
Number.
Wherein, second mode defrost operates in predetermined defrost operation duration with constant power defrost.
204, when the number of accumulative starting second mode defrost operation is greater than or equal to M times, then start first mode
Frost operation, and when the temperature of the evaporator of refrigerator reaches predetermined temperature backed off after random first mode defrost operation.
If the number for 205, adding up starting second mode defrost operation is less than M times, the refrigerator doors in scheduled duration are judged
Open state.
If 206, the number that refrigerator doors are opened is greater than or equal to n times and/or the accumulative duration opened of refrigerator doors is greater than or waits
In the first duration, then start first mode defrost operation, and when the temperature of the evaporator of refrigerator reaches predetermined temperature backed off after random
The first mode defrost operation.
If 207, the number that refrigerator doors are opened is less than n times and the accumulative duration opened of refrigerator doors less than the first duration, root
According to the open state of refrigerator doors, the predetermined defrost operation duration of second mode defrost operation is calculated.
According to the open state of refrigerator doors in specific step 207, the predetermined defrost fortune of second mode defrost operation is calculated
It include: to be entered in scheduled duration when row according to the duration calculation refrigerator that the number and refrigerator doors of refrigerator doors unlatching are opened every time
Amount of moisture；The predetermined defrost operation duration of second mode defrost operation is calculated according to the amount of moisture entered in scheduled duration.
The amount of moisture wherein received in refrigerator is mainly related with several reasons once:
First: the compartment volume of refrigerator is bigger, and the moisture received is more, and during refrigerating operaton, refrigerator receives big
The moisture permanent set of amount is on an evaporator.Second: when extraneous moisture is entered in refrigerator, the refrigerator doors opening time is longer,
The moisture then entered is also more, can bring more hydrogenesis on an evaporator.Third: in fixed duration, door opening times
More (certainly it is assumed that the time span opened the door every time is the same), then the moisture entered is also more.4th: opposite in air
Humidity is higher, illustrates that the amount of moisture contained in air is also higher, is also easy to produce more hydrogenesis in this way in evaporator.
In this way, entering the amount of moisture entered in refrigerator can be calculated with following formula.
Ni: the door opening times of refrigerator difference compartment；
li: the volume of different compartments；
Hh: refrigerator local environment temperature and moisture ratio corresponding under relative humidity, g/kg；
Hli: in refrigerator under different compartment corresponding temperatures with the water content under humidity, g/k；
γ: the air specific volume under different compartment temperatures, m3/kg；
N: the compartment quantity of refrigerator.
Above-mentioned formula one is mainly used for studying refrigerator and opening the door every time (ignoring refrigerator doors each opening time in the formula one
Influence) after can bring how many moisture into and enter, and last all condensations are on an evaporator.It is illustrative: for frost-free refrigerator, ice
Relative humidity inside case is 30%, if exterior relative humidity is 85%, so that it may calculate and pass through replacement after opening the door every time
Air and the moisture generated, it is assumed that the ratio more ventilated is 100% (assuming that refrigerator doors each opening time is all replaced enough
Air in refrigerator compartment), can calculate different refrigerators can bring that how much moisture enters evaporation under different door opening times
On device, need to generate how many heats in each defrost interval these moisture are melted into because of congealing into ice water needs
Heat.
For ease of illustration of the calculating of above-mentioned formula, lists one group of data and carry out example.
If:
Volume of refrigerating chamber 250L, temperature are 5 DEG C, relative humidity 40%, air specific volume 0.788m3/kg, and water capacity is
2.17g/kg.Freezing chamber volume is 150L, and temperature is -18 DEG C, and relative humidity 30%, air specific volume 0.723m3/kg contains
Moisture is 0.23g/kg.
When environment temperature is 32 DEG C, and relative humidity is 85%, corresponding air specific volume is 0.864m3/kg, and water capacity is
26.17g/kg
The amount of moisture entered when then each compartment (refrigerating chamber and freezing chamber) is opened the door one time:
G=0.15* (26.17-0.23)/0.723+0.25* (26.17-2.17)/0.788
=12.8 (g)
If respectively opened the door 3 times, the amount of moisture entered is 38.4g.
And the predetermined defrost operation duration of second mode defrost operation is generally determined according to frosting degree, frosting degree and enabling
The amount of moisture caused entry into is related, and convolution one calculates predetermined defrost operation duration.
T=G × (λ+K × △ T)/W (formula two)
G: the amount of moisture of entrance,
λ: the heat of solution of ice,
K: the thermal coefficient of ice,
Δ T: ice rises to the temperature difference of zero degree before dissolving,
W: the heating power of refrigerator defrost.
208, second mode defrost operation is started according to predetermined defrost operation duration.
Wherein, in step 201 to start refrigerating operaton for the first time, therefore timer is directly initiated in step 202 and is started
Timing, and after starting a second mode defrost operation or first mode defrost operation, timer is reset again to pre- timing
It is long to carry out timing, and circulation executes step 202~208 after counting full scheduled duration；Wherein starting a second mode defrost
After operation or first mode defrost operation, resetting timer carries out timing to scheduled duration again, and timer can be referred in defrost
Timing is carried out when operation starts, can also refer to that timer starts timing in defrost end of run, if timer is run in defrost
At the end of start timing, then need meter full phase neighbour the defrost of second mode twice run between time interval；If timer is being changed
Frost carries out timing when operation starts, then the length of time for the defrost operation that timer needs accumulative meter that will completely start and adjacent
The defrost of second mode twice operation between time interval.Furthermore after starting first mode defrost operation, step 203
Middle control process amendment judges that refrigerator adds up the number of starting second mode defrost operation from after the secondary first mode defrost operation,
One is added to the number of starting second mode defrost operation.
In theory, the cooling capacity for being equal to the moisture that neutralizing freezes to the heat that evaporator provides can reach defrost
Purpose, but still have following several special circumstances:
Environment locating for evaporator is more special, and the thermal insulation property on evaporator periphery is poor, might have a part of heat
Amount will lose.In addition, on an evaporator frosting there are one it is a key issue that frost can mainly condense in the lower part of evaporator,
Since evaporator is to place for refrigerator vertically, this is conducive to water and falls naturally, and air circulation is transported from lower to upper part
Row, so higher air of water content can first enter from the lower part of evaporator, then be run up by evaporator, in this fortune
In capable process, since the temperature of evaporator is low, a large amount of moisture can first build-up ice in the inlet port of evaporator (i.e. evaporator
Lower part), more tiny hydrone, which then enters on the higher position of evaporator, to be condensed, this also complies with evaporator in the evaporation of lower part
Temperature is high, and more big hydrone first condenses, and thinner hydrone then condenses in the lower evaporator top of evaporating temperature.
And with the second mode defrost of the predetermined defrost operation duration of predetermined power operation, mainly frosting on consideration evaporator
Total amount and heat relationship, and the lower part frosting of evaporator how much also mainly with enter amount of moisture number it is related, so
Predetermined defrost operation duration under second mode defrost operation also should be related with this, utilizes above-mentioned door opening times and time shadow
The formula for ringing frosting degree can calculate the time (the predetermined defrost operation duration under second mode defrost operation) of defrost automatically,
It can play the role of so energy-efficient.In view of refrigeration for refrigerator operational reliability requires frosting on evaporator that cannot influence to freeze
Performance, it may be assumed that first, the coefficient of heat transfer of evaporator is influenced after evaporator surface frosting, second: evaporator surface frosting excessively hinders
The circulating ventilation in air duct, finally also influences whether refrigeration performance.Even if there are above several special circumstances, as long as on evaporator
Frosting cannot influence refrigeration performance i.e. within the acceptable range, however, it is contemplated that above-mentioned several special circumstances, only with second
Mode defrost operation may not ensure that defrosting effect, if this is because the heat that second mode defrost operation provides cannot incite somebody to action
Frosting on evaporator is dissolved completely, then adding up frosting on certain time evaporator still will affect refrigeration performance, therefore this hair
Bright embodiment further adds first mode defrost operation.The characteristics of for evaporator defrost, steams in the embodiment of the present invention
Defrost on hair device is set as two kinds of control modes, and one kind is that first mode defrost operation (it is real to control escape mechanism by temperature
It is existing), another second mode defrost operation (being realized by setting predetermined defrost operation duration).Second mode defrost operation, control
Local defrost on evaporator.And first mode defrost operation is then controlled by the temperature sensor for setting on an evaporator,
Control the thorough defrost of evaporator.
If above-mentioned Fig. 3 provides a kind of example of defrosting control, wherein (for the first time comprising the operation of first mode defrost twice
First mode defrost runs 20min, second of first mode defrost runs 21min), and second mode defrost is run three times
(being 6min), wherein running between the operation of first mode defrost twice comprising second mode defrost three times, data display is passed through
13.25 talentes have the defrost of first mode defrost operation, and in the prior art all according to temperature controlled defrost phase
Than due to the presence of second mode defrost operation three times, refrigerator obviously has energy-efficient effect.
In addition, the defrost operation duration that 3 second mode defrosts in Fig. 3 are run equal (can be illustrated in figure 3
It is 6min) or unequal (as shown in figure 4, t1, t2 and t3 duration can be different), the defrost of the specific operation of second mode defrost every time
Operation duration is calculated according to above-mentioned formula two.Certainly, may be designed in a longer time when simple control is standard, example
If design requirement is more than to enter first mode defrost operation for 3 times in the door opening frequency of refrigerator, then in interval time inward swinging door
Number when being no more than 3 times, the defrost operation duration of each second mode defrost operation can be unified.
In addition, it is also contemplated that some other special circumstances, (cannot acquire refrigerator doors when as invalid such as the switch of refrigerator doors
Open state) situation, door seal is opened and closed bad situation and other special circumstances, these in special circumstances, it is possible to determine that
There are abnormal conditions, automatically switches to first mode defrost operation, guarantee the reliability of defrost as far as possible.
To implement above-mentioned refrigerator defrosting control method, a kind of refrigerator defrosting control device is provided, referring to Figure 5, is wrapped
It includes:
Timing unit 51, for starting timing after refrigerator starts defrost operation in refrigeration for refrigerator operational process.
Counting unit 52, for judging refrigerator self-starting first mode defrost after 51 timing of timing unit to scheduled duration
Add up the number of starting second mode defrost operation after operation, wherein first mode defrost operates to straight with constant power defrost
Reach predetermined temperature to evaporator temperature, second mode defrost operates in predetermined defrost operation duration with constant power
Frost；
The number of defrosting control unit 53, the accumulative starting second mode defrost operation for obtaining when counting unit 52 is big
In or when being equal to M time, then start first mode defrost operation, and the temperature for working as evaporator of refrigerator reaches predetermined temperature backed off after random the
One mode defrost operation.
In the above scheme, refrigerator defrosting control device, including timing unit 51, in refrigeration for refrigerator operational process
In, start timing after refrigerator starts defrost operation；Counting unit 52, for when 51 timing of timing unit to scheduled duration
Add up the number that starting second mode defrost is run after judging refrigerator self-starting first mode defrost operation afterwards, wherein the first mould
Formula defrost is operated to constant power defrost until evaporator temperature reaches predetermined temperature, and second mode defrost is operated to predetermined
With constant power defrost in defrost operation duration；Defrosting control unit 53, the accumulative starting for being obtained when counting unit 52
When the number of two modes defrost operation is greater than or equal to M times, then start first mode defrost operation, and work as the temperature of evaporator of refrigerator
Degree reaches predetermined temperature backed off after random first mode defrost operation.Wherein, refrigerator can be spaced pre- timing during refrigerating operaton
Long run according to second mode defrost carries out defrosting operation, carries out after the second mode defrost operation for adding up several numbers primary
First mode defrost operation carries out primary thorough defrost, since the power of second mode defrost operation is fixed and when defrost is run
Length is adjustable, thus when evaporimeter frosting is not serious in normal conditions local defrost is run by second mode defrost can be as far as possible
Reduce power consumption；And when evaporimeter frosting is serious, it is run by first mode defrost so that the temperature of evaporator reaches predetermined temperature
Degree, which carries out thorough defrost, can guarantee the normal operation of refrigerator, therefore while can guarantee defrosting effect, so that refrigerator has
Apparent energy-saving effect.In addition, being calculated in the program without the temperature that exits run to defrost repeatedly, it is only necessary to coordinate
The conversion of two kinds of defrost operational modes, project plan comparison are simple.
Illustratively, scheduled duration is greater than or equal to the time interval between the adjacent defrost of second mode twice operation.
In addition, referring to shown in Fig. 6, further includes:
Refrigerator door state judging unit 54, if run for the accumulative starting second mode defrost that counting unit 52 obtains
Number is less than M times, then judges the open state of the refrigerator doors in the scheduled duration；
Defrosting control unit 53, if the number for the refrigerator door state judging unit 54 confirmation refrigerator doors to be opened is greater than
Or be greater than or equal to the first duration equal to n times and/or the accumulative duration opened of refrigerator doors, then start first mode defrost operation,
And when the temperature of the evaporator of refrigerator reaches the operation of first mode defrost described in predetermined temperature backed off after random.
In addition, defrosting control unit 53, if confirming time that refrigerator doors are opened specifically for refrigerator door state judging unit 54
Number is less than n times and the accumulative duration opened of refrigerator doors less than the first duration, then according to the open state of the refrigerator doors, calculates institute
State the predetermined defrost operation duration of second mode defrost operation；According to the predetermined defrost operation duration starting described second
Mode defrost operation.
Further, defrosting control unit 53 is opened every time specifically for the number and refrigerator doors opened according to refrigerator doors
The amount of moisture that the duration calculation refrigerator opened enters in scheduled duration；Institute is calculated according to the amount of moisture entered in the scheduled duration
State the predetermined defrost operation duration of second mode defrost operation.
The embodiment of the present invention also provides a kind of refrigerator, including any of the above-described refrigerator defrosting control device.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (11)
1. a kind of refrigerator defrosting control method, which is characterized in that
In refrigeration for refrigerator operational process, start timing after refrigerator starts defrost operation；
Add up starting second mode defrost operation after judging refrigerator starting first mode defrost operation after timing to scheduled duration
Number, wherein the first mode defrost is operated to constant power defrost until evaporator temperature reaches predetermined temperature, the
Two modes defrost operates in predetermined defrost operation duration with constant power defrost；
When the number of accumulative starting second mode defrost operation is greater than or equal to M times, then start first mode defrost operation, and
When the temperature of the evaporator of refrigerator reaches the operation of first mode defrost described in predetermined temperature backed off after random.
2. refrigerator defrosting control method according to claim 1, which is characterized in that the scheduled duration is greater than or equal to phase
Time interval between the adjacent defrost of second mode twice operation.
3. refrigerator defrosting control method according to claim 1, which is characterized in that
If the number of accumulative starting second mode defrost operation is less than M times, opening in scheduled duration refrigerator doors is judged
Open state；
If the number that refrigerator doors are opened is greater than or equal to n times and/or the accumulative duration opened of refrigerator doors more than or equal to first
It is long, then start first mode defrost operation, and when the temperature of the evaporator of refrigerator reaches first described in predetermined temperature backed off after random
Mode defrost operation.
4. refrigerator defrosting control method according to claim 3, which is characterized in that if the number that refrigerator doors are opened is less than N
The accumulative duration opened of secondary and refrigerator doors, then according to the open state of the refrigerator doors, calculates described second less than the first duration
The predetermined defrost operation duration of mode defrost operation；
Start the second mode defrost operation according to the predetermined defrost operation duration.
5. refrigerator defrosting control method according to claim 4, which is characterized in that the unlatching according to the refrigerator doors
State calculates the predetermined defrost operation duration of the second mode defrost operation, comprising:
The duration calculation refrigerator that the number and refrigerator doors opened according to the refrigerator doors are opened every time enters in scheduled duration
Amount of moisture；
The predetermined defrost operation duration of the second mode defrost operation is calculated according to the amount of moisture entered in the scheduled duration.
6. a kind of refrigerator defrosting control device characterized by comprising
Timing unit, for starting timing after refrigerator starts defrost operation in refrigeration for refrigerator operational process；
Counting unit, for judging that refrigerator self-starting first mode defrost is run after the timing unit timing to scheduled duration
Add up the number of starting second mode defrost operation afterwards, wherein the first mode defrost operates to straight with constant power defrost
Reach predetermined temperature to evaporator temperature, second mode defrost operates in predetermined defrost operation duration with constant power
Frost；
Defrosting control unit, for when the counting unit obtain accumulative starting second mode defrost operation number be greater than or
When equal to M times, then start first mode defrost operation, and when the temperature of the evaporator of refrigerator reaches predetermined temperature backed off after random institute
State first mode defrost operation.
7. device according to claim 6, which is characterized in that the scheduled duration is greater than or equal to adjacent twice second
Time interval between mode defrost operation.
8. device according to claim 6, which is characterized in that
Refrigerator door state judging unit, if the number of the accumulative starting second mode defrost operation obtained for the counting unit
Less than M times, then the open state of the refrigerator doors in the scheduled duration is judged；
Defrosting control unit, if the number for refrigerator door state judging unit confirmation refrigerator doors to be opened is greater than or equal to N
The accumulative duration opened of secondary and/or refrigerator doors is greater than or equal to the first duration, then starts first mode defrost operation, and when described
The temperature of evaporator of refrigerator reaches the operation of first mode defrost described in predetermined temperature backed off after random.
9. device according to claim 8, which is characterized in that
Defrosting control unit, if the number opened specifically for refrigerator door state judging unit confirmation refrigerator doors is less than n times
And the accumulative duration opened of refrigerator doors, then according to the open state of the refrigerator doors, calculates second mould less than the first duration
The predetermined defrost operation duration of formula defrost operation；Start the second mode defrost according to the predetermined defrost operation duration
Operation.
10. device according to claim 9, which is characterized in that
The defrosting control unit, the duration opened every time specifically for the number and refrigerator doors opened according to the refrigerator doors
Calculate the amount of moisture that refrigerator enters in scheduled duration；Second mould is calculated according to the amount of moisture entered in the scheduled duration
The predetermined defrost operation duration of formula defrost operation.
11. a kind of refrigerator, which is characterized in that including the described in any item refrigerator defrosting control devices of such as claim 6-10.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110701866B (en) * | 2019-11-20 | 2022-02-01 | 合肥晶弘电器有限公司 | Defrosting control method of refrigerator and refrigerator |
| CN112066623B (en) * | 2020-08-27 | 2021-07-27 | 西安交通大学 | Heating power variable defrosting device of air-cooled refrigerator and control method |
| CN112378160B (en) * | 2020-11-12 | 2022-07-05 | 合肥美菱物联科技有限公司 | Refrigerator defrosting parameter optimization system and method |
| CN112815605B (en) * | 2021-01-15 | 2022-01-14 | 珠海格力电器股份有限公司 | Defrosting control method and device, refrigeration equipment and storage medium |
| CN113959161B (en) * | 2021-10-09 | 2023-05-02 | Tcl家用电器（合肥）有限公司 | Refrigerator defrosting control method and device, storage medium and electronic equipment |
| CN114992972B (en) * | 2022-05-25 | 2024-04-05 | 河南新飞制冷器具有限公司 | Defrosting control method for air-cooled refrigerator |
| CN115371338B (en) * | 2022-07-06 | 2023-07-18 | 西安交通大学 | Defrosting control method for refrigerator |
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