CN106123434B - The control method of wind cooling refrigerator - Google Patents
The control method of wind cooling refrigerator Download PDFInfo
- Publication number
- CN106123434B CN106123434B CN201610478567.9A CN201610478567A CN106123434B CN 106123434 B CN106123434 B CN 106123434B CN 201610478567 A CN201610478567 A CN 201610478567A CN 106123434 B CN106123434 B CN 106123434B
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- Prior art keywords
- wind cooling
- air door
- cooling refrigerator
- time
- door opening
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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
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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
- F25D21/06—Removing frost
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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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- 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
-
- 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
- F25D2321/00—Details or arrangements for defrosting; Preventing frosting; Removing condensed or defrost water, not provided for in other groups of this subclass
Abstract
The invention discloses a kind of control methods of wind cooling refrigerator, include the following steps：After refrigeration for refrigerator, the running time T of refrigeration mode and the operating parameter of wind cooling refrigerator are detected, operating parameter includes air door opening time；T between when running<When predetermined time Δ T and operating parameter are unsatisfactory for imposing a condition, refrigerator maintains refrigeration；When T >=predetermined time Δ T or operating parameter meet setting condition between when running, refrigerator opens defrosting.Control method according to the ... of the embodiment of the present invention, it can be according to evaporator surface frosting degree to the affecting laws of air door opening time, oppositely to be estimated to frosting degree by operating parameters such as air door opening times, air door opening time can also embody the influences of the factors to frosting degree such as opening time, refrigerator internal loading amount, environment temperature, the evaporator heat transfer efficiency of refrigerator doors indirectly simultaneously, so that defrosting is cut accuracy of judgement, avoids defrosting too early or too late.
Description
Technical field
The present invention relates to refrigerator control fields, more particularly, to a kind of control method of wind cooling refrigerator.
Background technology
Currently, air-cooled frost-free refrigerator is increasingly becoming the main product of refrigerator industry, air-cooled frost-free refrigerator is not real meaning
On it is frostless, flowed simply by air, make hydrogenesis in air to evaporator fin surface, the i.e. frost of evaporator surface
Layer.When evaporator surface frost layer is less, evaporator heat exchange can be promoted, but as evaporator surface frosting degree increases, caused
Evaporator heat exchange thermal resistance increases, while return air being made to flow through the increase of evaporator surface droop loss, and system air output significantly reduces, most
Lead to the reduction of evaporator heat exchange significant effect eventually, therefore air-cooled frost-free refrigerator needs certain interval of time to carry out defrosting process.Cause
This carries out defrosting process to improving heat exchanger performance in due course, and it is significant to improve refrigerator efficiency.Since evaporator is located at air duct lid
Plate back can not directly observe its surface frosting degree, directly most can not reasonably be removed according to the judgement of evaporator surface frost thickness
White process point of penetration.
Most of existing wind cooling refrigerator uses press accumulated running time to judge that signal, i.e. refrigerator compress as defrosting process
Machine accumulative operation a period of time, system is with regard to carrying out primary defrosting process.But since dynamic is stronger in actual use for refrigerator,
If to store food in actual use various by user, make press accumulated running time and evaporator surface Frosting rate process
Correlation it is poor so that the former cannot reactive evaporation device surface frosting degree well, occur defrosting process start it is partially early or
Slow phenomenon seriously affects refrigerator performance.
Invention content
The application is intended to solve technical problem of the existing technology.For this purpose, the present invention is intended to provide a kind of air-cooled ice
The control method of case, the control method can more accurately select defrosting point of penetration.
The control method of wind cooling refrigerator according to the present invention, the wind cooling refrigerator is interior to be equipped with compartment, is arranged on the compartment
There are air door to be opened/closed, the wind cooling refrigerator that there is refrigeration mode and defrosting mode, the control of the wind cooling refrigerator includes as follows
Step：After the wind cooling refrigerator opens refrigeration mode, the running time T of refrigeration mode and the operation of the wind cooling refrigerator are detected
Parameter, operating parameter include air door opening time；When the running time T of refrigeration mode<Predetermined time Δ T and operating parameter are discontented
When foot imposes a condition, the wind cooling refrigerator maintains refrigeration mode operation；As running time T >=predetermined time Δ T of refrigeration mode
Or when operating parameter satisfaction setting condition, the wind cooling refrigerator exits refrigeration mode and opens defrosting mode.
The control method of wind cooling refrigerator according to the ... of the embodiment of the present invention, by detect refrigeration mode in air door opening time and
Compressor accumulated running time judges the point of penetration that defrosts, influence that can be according to evaporator surface frosting degree to air door opening time
Rule, oppositely to be estimated to evaporator surface frosting degree by operating parameters such as air door opening times, while air door is beaten
It is all that ETAD expected time of arrival and departure can also embody opening time, refrigerator internal loading amount, environment temperature, evaporator heat transfer efficiency of refrigerator doors etc. indirectly
The phenomenon that multifactor influence to frosting degree makes defrosting cut accuracy of judgement, avoids the occurrence of too early and defrost too late.
Specifically, operating parameter further includes the fluctuating range of environment temperature and environment temperature.To improve defrosting incision
The judgment accuracy of point.
In some embodiments, after the wind cooling refrigerator opens refrigeration mode, it is set as one at interval of preset time
Record period, the air door opening time in a record period is known as monocycle air door opening time Tron, as Tron/Ts >=α
When operating parameter meet impose a condition, wherein Ts be preset monocycle air door open setting time, α be preset ratio system
Number.
In further embodiments, after the wind cooling refrigerator opens refrigeration mode, it is set as one at interval of preset time
A record period, the air door opening time in a record period is known as monocycle air door opening time Tron, as β+Tron/Ts
Operating parameter, which meets, when >=α imposes a condition, wherein Ts is that preset monocycle air door opens setting time, and α is preset ratio
Coefficient, β are preset correction factor.
Specifically, the monocycle air door opens the list that setting time Ts is second record period after refrigeration mode is opened
Period air door opening time Tron2 detects whether Tron/Ts meets setting condition since third record period.
More specifically, the proportionality coefficient α is air door opening time coefficient of variation, the proportionality coefficient α and environment temperature
It is related.
After in certain embodiments, the proportionality coefficient α is opened with refrigeration mode in second record period
The relationship that environment temperature t2 is proportionate.
Optionally, the value range of the proportionality coefficient α is：1.2≤α≤1.8.
In certain embodiments, the correction factor β is environmental temperature fluctuation correction factor, the correction factor β
It is related to the fluctuating range of environment temperature.
Specifically, the correction factor β and (t-t2) negatively correlated relationship, (t-t2) are the environment of present recording period
Difference between temperature t and the environment temperature t2 of second record period.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obviously, or practice through the invention is recognized.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination following accompanying drawings to embodiment
Obviously and it is readily appreciated that, wherein：
Fig. 1 is defrosting point of penetration decision flow chart accord to a specific embodiment of that present invention；
Fig. 2 is environmental temperature fluctuation correction factor β and environmental temperature fluctuation width accord to a specific embodiment of that present invention
Value relationship between degree corresponds to table；
Fig. 3 is between air door opening time coefficient of variation α and environment temperature accord to a specific embodiment of that present invention
Value relationship corresponds to table.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.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.
The control method of wind cooling refrigerator according to the ... of the embodiment of the present invention is described below with reference to Fig. 1-Fig. 3.
Wind cooling refrigerator according to the ... of the embodiment of the present invention, wind cooling refrigerator is interior to be equipped with compartment, and wind to be opened/closed is provided on compartment
Door, wind cooling refrigerator have refrigeration mode and defrosting mode.Wind cooling refrigerator can automatic defrosting, refrigeration mode operation up to one timing
Between, when generating more frost amount on evaporator, wind cooling refrigerator can automatically switch to defrosting mode.
Specifically, compressor, evaporator, condenser and throttling set etc., compressor, evaporator, condensation are equipped in refrigerator
Device and throttling set constitute refrigerant-cycle systems.Compressor operation is to generate high-temperature high-pressure refrigerant, high temperature in refrigeration mode
High-pressure refrigerant is drained into condenser to condense heat release, and for condensed refrigerant after throttling set reducing pressure by regulating flow, low temperature is low
Pressure liquid refrigerant is flowed into evaporator with evaporation endothermic, and refrigerant flows back to after absorbing the air-flow heat for flowing through evaporator
Into compressor, with this continuous reciprocation cycle.
Indoor air-flow can flow to evaporator by air door, and air-flow flows back to compartment again after evaporator absorbing and cooling temperature, with
Storage at lower temperature is carried out to indoor object.
Wind cooling refrigerator can be automatically controled the opening and closing of air door, so that indoor temperature is maintained at the range of compartment set temperature
It is interior.Under normal conditions, the opening/closing time of air door depends primarily on the difference of indoor actual temperature and compartment set temperature.Example
Such as, when compartment set temperature is 5 degree, and indoor actual temperature is 12 degree, air door can open the long period, so that compartment
Actual temperature can be rapidly reduced to 5 degree by 12 degree；And when compartment set temperature is 5 degree, indoor actual temperature is 3 degrees Celsius
When, air door meeting temporary close for a period of time, is opened again after indoor actual temperature is increased beyond 5 degree.
More specifically, air-flow, after flowing through evaporator, stream air temperature declines and humidity reduces, the steam meeting in air-flow
Condensation forms frost layer on an evaporator.It is understood that wind cooling refrigerator is longer in refrigeration mode duration, i.e. compressor
Run time is longer, then the frost layer condensed on evaporator is thicker, influences refrigerating efficiency.
It is most of to be made using press accumulated running time in the Defrost method of some wind cooling refrigerators disclosed in the prior art
Judge that signal, this judgment mode accuracy are insufficient for defrosting process.Also some combines refrigerator using press accumulated running time
Opening time, calculating the point of penetration of defrosting, the temperature using press accumulated running time in conjunction with evaporator also judges
The point of penetration of defrosting.These methods control thinking is more complex, and accuracy is also to be improved.
To solve the problems, such as defrosting, the embodiment of the present invention proposes a kind of control method of wind cooling refrigerator, with more definitely
Calculate defrosting incision opportunity.
Specifically, the control method of wind cooling refrigerator includes the following steps：
After wind cooling refrigerator opens refrigeration mode, the running time T of refrigeration mode and the operating parameter of wind cooling refrigerator are detected,
Operating parameter includes air door opening time；
When the running time T of refrigeration mode<When predetermined time Δ T and operating parameter are unsatisfactory for imposing a condition, wind cooling refrigerator
Maintain refrigeration mode operation；
When the running time T of refrigeration mode >=predetermined time Δ T or operating parameter, which meet, to impose a condition, wind cooling refrigerator
It exits refrigeration mode and opens defrosting mode.
That is, after refrigeration mode starts, before reaching predetermined time Δ T at runtime, whether refrigerator, which defrosts, is examined
Consider be the operating parameters such as air door opening time, if operating parameter meet impose a condition, wind cooling refrigerator stop refrigeration mode and
Into defrosting mode, if operating parameter is unsatisfactory for imposing a condition, wind cooling refrigerator is also maintained in refrigeration mode.When refrigeration mould
After the time of formula operation is more than predetermined time Δ T, then do not consider further that operating parameter, wind cooling refrigerator are forced into defrosting mode.
Wherein, after refrigeration mode is opened each time, the running time T of refrigeration mode is started from scratch calculating, is above counted previous
The run time of secondary refrigeration mode.Equally, what air door opening time referred to is also when air door is beaten in time refrigeration mode operational process
ETAD expected time of arrival and departure, and the opening time for the air door being not counted in previous secondary refrigeration mode operational process.
Wherein, refrigerator compressor operating work done in refrigeration mode, therefore the run time of refrigeration mode is alternatively referred to as pressed
Contracting machine accumulated running time, abbreviation press accumulated running time.When defroster, compressor stops doing power.Here, compressor
Accumulated running time refers in the operational process of time refrigeration mode, the cumulative time of compressor operating, preceding primary refrigeration mould
Compressor operating time is not counted in when in time cumulative time in formula operational process.
In one specific example, Defrost heater and timer are equipped in wind cooling refrigerator, Defrost heater is distributed in evaporation
Around device, and Defrost heater is by Timer Controlling.The accumulated running time after compressor is opened is can detect by timer, when
Timer, which calculates compressor, to be added up after having run predetermined time Δ T, and testing result is transmitted to compressor to close by timer
Compressor, then Defrost heater begin to warm up to enter defrosting mode.It waits after the completion of defrosting, Defrost heater is closed, timing
Counter O reset, compressor are opened to be again introduced into refrigeration mode.After each refrigeration mode is opened, compressor accumulated running time
And the equal reclocking of air door opening time.
Wind cooling refrigerator not only allows for the accumulative operation of compressor in the judgement of defrosting point of penetration in embodiments of the present invention
Time, it is also contemplated that air door opening time.
It is understood that the length of air door opening time can reflect the running many influences of wind cooling refrigerator because
Element.For example, if refrigerator doors frequently open or refrigerator in storage article when excessively causing interior thermic load excessive, indoor temperature
Degree rises, then air door opening time can also lengthen in refrigeration mode, so that compartment actual temperature can be dropped rapidly to compartment
Set temperature.In another example if environment temperature is relatively low, or even close to compartment set temperature, then air door is opened in refrigeration mode
Time can be shorter.
It will also be appreciated that being judged in conjunction with the influence that refrigerator doors are opened with press accumulated running time when if defrosting
Point of penetration will not only calculate the number of refrigerator doors opening, also calculate the duration of refrigerator doors opening, consider that parameter is more and fluctuates too
Greatly, error in judgement is big.But if what is combined is air door opening time, air door opening and closing will not excessively frequently, and calculating parameter lacks wave
Dynamic small, error in judgement is also small.
In refrigeration mode, the time that air door is opened is longer, and the indoor throughput for flowing to evaporator is bigger, then evaporator
The frost amount of upper condensation is more.I.e. the length of air door opening time can directly reflect the indoor throughput for flowing to evaporator, from
And reflect the frosting degree on evaporator indirectly.
Moreover, when frost layer is thicker on evaporator, heat exchange efficiency reduces between evaporator and air-flow, then indoor for acquisition
Air door needs the time opened that can lengthen when the cold of equivalent.Therefore the length of air door opening time also reflects evaporator indirectly
Whether upper frost layer is blocked up, and whether the heat exchange efficiency of evaporator reduces.
Accordingly, it can be said that the length by detecting air door opening time, helps to be accurately judged to wind cooling refrigerator defrosting
Point of penetration.
In the above-mentioned methods, as the running time T of refrigeration mode >=predetermined time Δ T, wind cooling refrigerator exits refrigeration mould
Formula and unlatching defrosting mode, are the mainstream computational methods of conventional refrigerator defrosting, and design in this way is a kind of protection to wind cooling refrigerator
Property measure, avoids the problem that the operating parameter of wind cooling refrigerator is not achieved setting condition and leads to defroster too late for a long time.
The control method of wind cooling refrigerator according to the ... of the embodiment of the present invention, by detect refrigeration mode in air door opening time and
Compressor accumulated running time judges the point of penetration that defrosts, can be according to evaporator surface frosting degree to the shadow of air door opening time
Rule is rung, oppositely to be estimated to evaporator surface frosting degree by operating parameters such as air door opening times, while air door
Opening time can also embody opening time, refrigerator internal loading amount, environment temperature, evaporator heat transfer efficiency of refrigerator doors etc. indirectly
Influence of the factors to frosting degree keeps defrosting incision accurate, the phenomenon that avoiding the occurrence of too early and defrost too late.
In embodiments of the present invention, to improve the judgment accuracy of defrosting point of penetration, it may also include environment in operating parameter
The fluctuating range of temperature and environment temperature.The fluctuating range of environment temperature and environment temperature is accounted in influence, quite
In the refrigerating capacity for considering chilling room indoor article needs, the influence of ambient humidity has been allowed also for.
It is understood that environment temperature is higher under normal conditions, air humidity is bigger, the refrigerating capacity that frozen goods need
It increases, frost amount also can accordingly increase on evaporator, then the point of penetration that defrosts needs shift to an earlier date, otherwise defrosting point of penetration will postpone.
In some embodiments, after wind cooling refrigerator opens refrigeration mode, the running time T and air door of refrigeration mode are detected
The amplitude of variation of opening time.When the running time T of refrigeration mode<The amplitude of variation of predetermined time Δ T and air door opening time
When less than preset value, wind cooling refrigerator maintains refrigeration mode operation；When refrigeration mode running time T >=predetermined time Δ T or
When the amplitude of variation of air door opening time is more than or equal to preset value, wind cooling refrigerator exits refrigeration mode and opens defrosting mode.
That is, reversely estimating out evaporator surface according to the amplitude of variation of air door opening time in the embodiment
Frosting degree.It is understood that the time that single air door is opened increases, it may be possible to which refrigerator internal loading increases, it is also possible to
Frost layer is thicker on evaporator causes efficiency to reduce, therefore defrosts and need to shift to an earlier date, otherwise defrosting can postpone.When being opened with air door
Between amplitude of variation come judge defrost point of penetration, judge it is more accurate.
It is described below before refrigeration mode running time T reaches predetermined time Δ T, judges two bases of defrosting point of penetration
This method.
Method one：After wind cooling refrigerator opens refrigeration mode, a record period can will be set as at interval of preset time,
Air door opening time in one record period is known as monocycle air door opening time Tron, the operating parameter as Tron/Ts >=α
Meet and impose a condition, wherein Ts is that preset monocycle air door opens setting time, and α is preset proportionality coefficient.
That is, multiple times will be divided into this period to before predetermined time Δ T after since refrigeration mode
Section, each period are known as a record period.Then the air door opening time in each record period, a record week are detected
Air door opening time in phase is a monocycle air door opening time Tron.Since timing, each record of detection is all one by one
Whether the Tron/Ts in the phase is more than or equal to proportionality coefficient α, and this setting condition is equivalent to the air door considered in each record period
The opposite monocycle air door of opening time opens the ratio size of setting time Ts, judges that algorithm is very simple, wind cooling refrigerator exists
Operating parameter to be detected is few when operation, and detection structure is simpler.
Method two：After wind cooling refrigerator opens refrigeration mode, it is set as a record period at interval of preset time, one
Air door opening time in record period is known as monocycle air door opening time Tron, and as β+Tron/Ts >=α, operating parameter is full
Foot imposes a condition, wherein Ts is that preset monocycle air door opens setting time, and α is preset proportionality coefficient, and β is preset
Correction factor.
That is, to before predetermined time Δ T after since refrigeration mode, and will be divided into this period multiple
Period, each period are known as a record period.Then the air door opening time in each record period, i.e. single-revolution are detected
Phase air door opening time Tron.
Since timing, detect whether the β+Tron/Ts in each record period are more than or equal to proportionality coefficient α one by one, this
Kind imposes a condition and adds correction factor, judges that algorithm is simple, accuracy rate also can be improved accordingly.
Above-mentioned two basic skills is to incorporate preset proportionality coefficient α using Tron/Ts as basic operating parameter
Judge as imposing a condition with correction factor β.
In above-mentioned two basic skills, each record period can be equal with the time, and each record period can also the time
Differ, for example, since refrigeration mode the time span of rear record period can gradually shorten or multiple record periods when
Between length according to other rules be arranged, the time span of first record period can be such as designed to than remaining record period
It is long, and remaining record duration is equal.Optionally, the duration of the 1st record period is more than 2 hours and is less than 3 hours.
Preset monocycle air door is opened setting time Ts and equal can not also be waited in each record period, here
It is not especially limited.
For example, in above-mentioned two method, the monocycle air door of second record period is beaten after can opening refrigeration mode
ETAD expected time of arrival and departure Tron2 is set as monocycle air door and opens setting time Ts, and whether Tron/Ts is detected since third record period
Meet and imposes a condition.
It is appreciated that refrigerator is likely to be at off-position or in defrosting mode before first record period, first
Air door opening time is longer in a record period, and error is easy when judging.It may be just on evaporator in first record period
Start frosting, therefore first record period can be not involved in the judgement of defrosting point of penetration.Since the second record period, refrigeration by
It walks and reaches stable state, monocycle air door opening time Tron is also tended to equal in each record period.
The monocycle air door opening time Tron2 of second record period is set as monocycle air door and opens setting time
Ts is detected since third record period, is equivalent to the monocycle that each record period is seen since third record period
Whether the ratio of the monocycle air door opening time Tron2 of air door opening time Tron and second record period reaches setting item
Part, this method is using the fluctuating range of air door opening time as basis for estimation.
When specific operation, the amplitude of variation of air door opening time not only can be considered in operating parameter, it is also contemplated that ring
The influence factors such as border temperature, the fluctuating range of environment temperature.
In above-mentioned two method, proportionality coefficient α is air door opening time coefficient of variation, proportionality coefficient α and environment temperature phase
It closes.
Such as in some specific examples, proportionality coefficient α and the ring after refrigeration mode unlatching in second record period
The relationship that border temperature t2 is proportionate.That is, environment temperature t2 is higher, proportionality coefficient α values are bigger, and environment temperature t2 is got over
Low, proportionality coefficient α values are smaller.
It is understood that when environment temperature is higher, thermic load increases in refrigerator compartment, and evaporator surface frosting degree is to wind
Door opening time (i.e. air door opening time) influences just big, i.e., identical frosting degree, in the case of environment temperature height, to air door
Opening time influences to increase, therefore value increases when selection α, also just reduces influence of the environment temperature to Rule of judgment.
Optionally, the value range of proportionality coefficient α is：1.2≤α≤1.8.
In above-mentioned two method, proportionality coefficient α can be segmented value according to the size of environment temperature t2.Such as it can be with
By environment temperature t2 according to multiple environment temperature sections are divided into from low to high, a corresponding ratio is set in each environment temperature section
Factor alpha, ratio factor alpha is different in different environment temperature sections.
In the above method two, correction factor β is environmental temperature fluctuation correction factor, correction factor β and environment temperature
Fluctuating range is related.
Specifically, correction factor β and (t-t2) negatively correlated relationship, (t-t2) are the environment temperature of present recording period
Difference between the environment temperature t2 of t and second record period.That is, since third record period, environment temperature
The opposite second record period temperature of degree is higher, and correction factor β values are smaller, with respect to second record period temperature of environment temperature
Lower, correction factor β values are bigger.
It is understood that under high circumstance temperature, refrigerator air door opening time is quicker to evaporator surface frosting variable quantity
Sense, so correction factor β values reduce.And under low circumstance temperature, refrigerator air door opening time is to evaporator surface frosting variable quantity
Susceptibility reduces, therefore correction factor β values can increase.
In method two, correction factor β can be segmented value according to the size of the amplitude of variation of environment temperature.Such as it can
With by the difference (t-t2) between the environment temperature t of present recording period and the environment temperature t2 of second record period according to by
It is low to high to be divided into multiple temperature difference sections, a corresponding correction factor β is set in each temperature difference section, in different temperature difference sections
Correction factor β is different.
With reference to Fig. 1-Fig. 3 descriptions, invention applies the wind cooling refrigerator controlling parties in a specific example of method two
Method.
This method is air door opening time amplitude of variation combining environmental temperature and its fluctuation width during foundation stable operation
Degree is modified, and accurately to judge the point of penetration that defrosts.
In this method as shown in Figure 1, preset when press accumulated running time T is more than Δ T (wherein 3<Δ T) when, ice
After case pressure starts defrosting process, and the process that defrosts starts, press accumulated running time, air door opening time and environment temperature note
Record zeros data.
This method specifically controls rule：After defroster is completed and is switched on again, press accumulated running time is recorded
When increasing to second record period, the air door opening time Tron2 in second record period and environment temperature t2.Postscript
It records in each record period, air door opening time and environment temperature Tron and t.
Definition modification factor beta is environmental temperature fluctuation correction factor, it mainly with the environment temperature t2 acquired for the first time and work as
The difference of the environment temperature t of preceding record period acquisition is related, i.e. β is related with (t-t2), and different temperatures difference β values are different.Tool
Body is shown in the table of Fig. 2,2 ﹤ β of -0.13 ﹤ β 5 ﹤ β, 4 ﹤ β, 3 ﹤ β, 1 ﹤ 0.06.
That is, for the environment temperature t2 of opposite second record period, if the environment temperature of back record period
Degree t is higher, then the value of β is smaller, if the environment temperature t of back record period is lower, the value of β is bigger.
Proportionality coefficient α is defined as air door opening time coefficient of variation, α values are different at a temperature of varying environment.Specific value is shown in
Table in Fig. 3, wherein 1.2 ﹤ α, 1 ﹤ α, 2 ﹤ α, 3 ﹤ α, 4 ﹤ α, 5 ﹤ 1.5.
That is, since third record period, the environment temperature t of each record period is higher, then the value of α
Bigger, the environment temperature t of first record period is lower, then the value of α is smaller.
After having acquired data every time, compared with data before.If β+Tron/Ts >=α, refrigerator starts to defrost,
Otherwise only when compressor accumulated running time T is more than Δ T, refrigerator just starts to defrost.
Such as：It is assumed that environment temperature t2 is 25 DEG C when second record period, then air door opening time coefficient of variation value
For α 3.When to some record period, environment temperature t is 32 DEG C, and air door opening time is Tx, and environmental temperature fluctuation is in the process
7 DEG C, at this point, environmental temperature fluctuation correction factor value is β 4, only when β+Tron/Tron2 >=α or press accumulated running time
More than Δ T, start defrosting process.That is, in the record period, if β 4+Tx/Tron2 are more than or equal to α 3, carry out
Defrosting mode maintains refrigeration mode if β 4+Tx/Tron2 are less than α 3.
Innovative point involved by this method is mainly reflected in：1) this method proposes a kind of variation according to air door opening time
Amplitude carrys out the accurate defrosting control rule for judging defrosting point of penetration；2) according to evaporator surface frosting degree to air door opening time shadow
Sound rule reversely to judge the point of penetration that defrosts, after running first record period by the way that press is accumulative after comparison defrosting, second
Air door opening time Tron2 and each air door opening time Tron later in record period, when the two ratio is in 1.2-1.8 models
When enclosing interior, refrigerator starts to defrost；3) in order to increase the accuracy that defrosting point of penetration judges, air door opening time is also repaiied
Just, the size of correction factor β to environment temperature t2 when second record period and is worked as in time record period with the accumulative operation of press
Environment temperature t fluctuating ranges are related；4) main purpose of this method is to reach a timing in evaporator surface frosting degree to be removed
White process, the phenomenon that avoiding the occurrence of too early and defrost too late.
That is, refrigerator stable operation by being influenced maximum air door by this method by evaporator surface frosting in the process
Opening time changing rule is extract, and as the judgement signal of intelligent defrosting point of penetration, passes through accurate judgement evaporator surface
Frosting degree determines rational defrosting interval.Meanwhile the reasonability judged in order to further increase, air door opening time and ring
Border temperature and its wave motion couples are modified control parameter to together, so that defrosting interval is determined more reasonable, prevent steaming
Send out device surface frosting degree it is larger without defrosting phenomena such as.
In the description of the present invention, it is to be understood that, term "center", "upper", "lower", "front", "rear", " left side ",
The orientation or positional relationship of the instructions such as " right side ", "top", "bottom", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings,
Be merely for convenience of description of the present invention and simplification of the description, do not indicate or imply the indicated device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more this feature.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two
It is a or more than two.
In the present invention unless specifically defined or limited otherwise, fisrt feature the "upper" of second feature or "lower"
It may include that the first and second features are in direct contact, can also not be to be in direct contact but pass through it including the first and second features
Between other characterisation contact.Moreover, fisrt feature second feature " on ", " top " and " above " include first special
Sign is right over second feature and oblique upper, or is merely representative of fisrt feature level height and is higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include fisrt feature immediately below second feature and obliquely downward, or be merely representative of
Fisrt feature level height is less than second feature.
In the description of this specification, the description of reference term " embodiment ", " example " etc. mean combine the embodiment or
Example particular features, structures, materials, or characteristics described are included at least one embodiment or example of the invention.At this
In specification, schematic expression of the above terms may not refer to the same embodiment or example.Moreover, description is specific
Feature, structure, material or feature can be combined in any suitable manner in any one or more of the embodiments or examples.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of being detached from the principle of the present invention and objective a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The range of invention is limited by claim and its equivalent.
Claims (9)
1. a kind of control method of wind cooling refrigerator, the wind cooling refrigerator is interior to be equipped with compartment, is provided on the compartment to be opened/closed
Air door, the wind cooling refrigerator have refrigeration mode and defrosting mode, which is characterized in that the control of the wind cooling refrigerator includes as follows
Step：
After the wind cooling refrigerator opens refrigeration mode, the running time T of refrigeration mode and the operation of the wind cooling refrigerator are detected
Parameter, operating parameter include the fluctuating range of air door opening time, environment temperature and environment temperature；
When the running time T of refrigeration mode<When predetermined time Δ T and operating parameter are unsatisfactory for imposing a condition, the wind cooling refrigerator
Maintain refrigeration mode operation；
When the running time T of refrigeration mode >=predetermined time Δ T or operating parameter, which meet, to impose a condition, the wind cooling refrigerator
It exits refrigeration mode and opens defrosting mode.
2. the control method of wind cooling refrigerator according to claim 1, which is characterized in that open and freeze in the wind cooling refrigerator
After pattern, it is set as a record period at interval of preset time, the air door opening time in a record period is known as single-revolution
Phase air door opening time Tron, as Tron/Ts >=α, operating parameter, which meets, imposes a condition, wherein Ts is preset monocycle wind
Door opens setting time, and α is preset proportionality coefficient.
3. the control method of wind cooling refrigerator according to claim 1, which is characterized in that open and freeze in the wind cooling refrigerator
After pattern, it is set as a record period at interval of preset time, the air door opening time in a record period is known as single-revolution
Phase air door opening time Tron, as β+Tron/Ts >=α, operating parameter, which meets, imposes a condition, wherein Ts is the preset monocycle
Air door opens setting time, and α is preset proportionality coefficient, and β is preset correction factor.
4. the control method of the wind cooling refrigerator according to claim 2 or 3, which is characterized in that the monocycle air door is beaten
The monocycle air door opening time Tron2 that the Ts that fixes time is second record period after refrigeration mode is opened is opened up, from third
Record period starts to detect whether Tron/Ts meets setting condition.
5. the control method of the wind cooling refrigerator according to claim 2 or 3, which is characterized in that the proportionality coefficient α is wind
Door opening time coefficient of variation, the proportionality coefficient α are related to environment temperature.
6. the control method of wind cooling refrigerator according to claim 5, which is characterized in that the proportionality coefficient α and refrigeration mould
The relationship that environment temperature t2 after formula unlatching in second record period is proportionate.
7. the control method of the wind cooling refrigerator according to claim 2 or 3, which is characterized in that the proportionality coefficient α's
Value range is：1.2≤α≤1.8.
8. the control method of wind cooling refrigerator according to claim 3, which is characterized in that the correction factor β is environment temperature
Degree fluctuation correction factor, the correction factor β are related to the fluctuating range of environment temperature.
9. the control method of wind cooling refrigerator according to claim 8, which is characterized in that the correction factor β and (t-t2)
Negatively correlated relationship, (t-t2) be present recording period environment temperature t and second record period environment temperature t2 it
Between difference.
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| CN201610478567.9A CN106123434B (en) | 2016-06-24 | 2016-06-24 | The control method of wind cooling refrigerator |
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| CN201610478567.9A CN106123434B (en) | 2016-06-24 | 2016-06-24 | The control method of wind cooling refrigerator |
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| CN106123434B true CN106123434B (en) | 2018-08-28 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108955071B (en) * | 2018-05-30 | 2020-08-11 | 海信容声(广东)冰箱有限公司 | Control method of heater and refrigerator |
| CN109855356B (en) * | 2019-01-04 | 2020-09-29 | 海尔智家股份有限公司 | Refrigerator and method for judging frosting degree of evaporator in refrigerator |
| CN109751830B (en) * | 2019-01-15 | 2021-02-26 | 合肥华凌股份有限公司 | Refrigeration equipment and method and device for detecting state of refrigeration equipment |
| CN110081655B (en) * | 2019-04-04 | 2021-03-23 | 海信容声(广东)冰箱有限公司 | Refrigeration equipment and evaporator anti-frosting method |
| CN113048691B (en) * | 2019-12-26 | 2022-11-22 | 青岛海尔电冰箱有限公司 | Refrigerator and defrosting control method thereof |
| CN111156768B (en) * | 2020-03-04 | 2021-11-30 | 江苏元隆电器有限公司 | Temperature control method of air-cooled refrigerator |
| CN111536736B (en) * | 2020-04-24 | 2022-04-12 | 海信（山东）冰箱有限公司 | Refrigerator and control method thereof |
| CN111536737B (en) * | 2020-04-24 | 2021-12-14 | 海信（山东）冰箱有限公司 | Refrigerator and control method thereof |
| CN111536738B (en) * | 2020-04-24 | 2022-03-18 | 海信（山东）冰箱有限公司 | Refrigerator and control method thereof |
| CN112484377B (en) * | 2020-11-23 | 2021-07-23 | 珠海格力电器股份有限公司 | Anti-freezing control method and device for refrigerator air door, controller and refrigerator |
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| CN106123434A (en) | 2016-11-16 |
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