CN110887316B - Dynamic frosting time calculation method and refrigerator - Google Patents
Dynamic frosting time calculation method and refrigerator Download PDFInfo
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- CN110887316B CN110887316B CN201911223208.9A CN201911223208A CN110887316B CN 110887316 B CN110887316 B CN 110887316B CN 201911223208 A CN201911223208 A CN 201911223208A CN 110887316 B CN110887316 B CN 110887316B
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- 238000004364 calculation method Methods 0.000 title claims abstract description 25
- 238000010257 thawing Methods 0.000 claims abstract description 125
- 238000002360 preparation method Methods 0.000 claims abstract description 16
- 238000012937 correction Methods 0.000 claims abstract description 10
- 230000007613 environmental effect Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005057 refrigeration Methods 0.000 description 4
- 230000001186 cumulative effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 241000257303 Hymenoptera Species 0.000 description 1
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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
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- Defrosting Systems (AREA)
Abstract
The invention discloses a dynamic frosting time calculation method and a refrigerator, wherein the dynamic frosting time calculation method comprises the following steps: collecting operation parameters and use data of the refrigerator, and setting the frosting time t according to the collection resultPreparation ofPerforming real-time correction to obtain the next frosting time tn+1，tn+1=(A+B+C)tPreparation of+（Tn‑Tn‑1) E/60, A is environment coefficient, B is door opening coefficient, C is compressor coefficient, TnThe defrosting time is Tn‑1The last defrosting time is and E is a defrosting influence coefficient. The calculated frosting time is more accurate, the refrigerator is defrosted in a proper time, frequent defrosting is avoided, the energy is saved, the environment is protected, the problem of long defrosting interval time can be avoided, the single defrosting time is shorter, the temperature fluctuation is small, and the fresh-keeping effect of the refrigerator is good.
Description
Technical Field
The invention relates to the technical field of refrigeration systems, in particular to a dynamic frosting time calculation method and a refrigerator.
Background
Along with the improvement of life quality of people, the requirement on the preservation effect of a refrigerator is higher and higher, the air-cooled refrigerator is crowded to the market by bees due to the advantages of high refrigeration speed and good safety effect, the market share of the existing air-cooled refrigerator exceeds 80%, but the existing time of the air-cooled refrigerator in the Chinese market is not very long, and a plurality of problems exist in the market since the air-cooled refrigerator is sold, wherein the main problem is that defrosting is not timely, frost blockage can cause refrigeration of the refrigerator, and the preservation effect of the refrigerator is influenced.
In the prior art, the air-cooled refrigerator mostly adopts methods of defrosting at regular time, opening a door to reduce a defrosting period and the like to solve the defrosting problem, the defrosting time is fixed, the refrigerator is defrosted at intervals of the defrosting time, if the defrosting time is set to be shorter, the defrosting times are frequent, and the power consumption during defrosting is far greater than that during normal refrigeration, so that the power consumption of the refrigerator can be greatly increased by frequent defrosting; if the frosting time is set to be longer, the defrosting interval time is long, so that the single defrosting time is long, the temperature fluctuation is large, and the fresh-keeping effect of the refrigerator is influenced.
Therefore, how to design a dynamic frosting time calculation method and a refrigerator for improving the accuracy of the frosting time is an urgent technical problem to be solved in the industry.
Disclosure of Invention
In order to solve the defect of inaccurate frosting time in the prior art, the invention provides a dynamic frosting time calculation method and a refrigerator.
The invention adopts the technical scheme that a dynamic frosting time calculation method is designed, and comprises the following steps: collecting operation parameters and use data of the refrigerator, and setting the frosting time t according to the collection resultPreparation ofPerforming real-time correction to obtain the next frosting time tn+1。
Preferably, the next frosting time tn+1The interval time between the power-on time of the refrigerator and the defrosting start time is the interval time; and/or the next frosting time tn+1The time interval from the defrosting exiting time to the next defrosting starting time is shown.
Preferably, the refrigerator starts to count the actual interval time t when being powered on or the defrosting exits at the timePractice ofWhen t isPractice of≥tn+1At that time, the refrigerator starts defrosting.
Preferably, the collecting results include: environmental coefficient A, door opening coefficient B, compressor coefficient C and defrosting time TnLast defrosting time Tn-1And a defrosting influence coefficient E; according to the acquisition result, presetting frosting time tPreparation ofThe real-time correction to obtain the next frosting time comprises the following steps: t is tn+1=(A+B+C)tPreparation of+（Tn-Tn-1）E /60，tPreparation ofIn units of hours, TnAnd Tn-1The unit of (c) is minutes.
Wherein, the environmental coefficient A is calculated by the environmental temperature T and the environmental humidity RH: a = [1- (x1 × T + y1 × RH) ] + 1/3, x1=1/100, y1= 1/2.
The door opening coefficient B is formed by the door opening times D and the door opening time t1Calculating to obtain: b = [1- (x2 × D + y2 × t)1)]1/3, x2=1/60, y2=1/1200, and the refrigerator restarts the cumulative door opening times D and the door opening time t each time the defrosting exits1。
Compressor coefficient C is determined by compressor running time t2And a single compressor run time t3Calculating to obtain: c = [1- (x3 × t)2+y3*t3)]1/3, x3=1/2880, y3=1/2880, the refrigerator restarts the accumulated compressor operation time t at each defrosting exit2。
The defrosting influence coefficient E is any one of a first defrosting influence coefficient E1, a second defrosting influence coefficient E2 and a third defrosting influence coefficient E3, the first defrosting influence coefficient E1 is a positive number, the second defrosting influence coefficient E2 is a negative number, and the third defrosting influence coefficient E3 is zero; when the defrosting time T is finishednIs more than last defrosting time Tn-1When the frost influence coefficient is the first frost influence coefficient E1; and/or when the defrosting time T is upnLess than last defrosting time Tn-1The defrosting influence coefficient is a second defrosting influence coefficient E2; and/or when the defrosting time T is upnEqual to last defrosting time Tn-1The defrosting influence coefficient is a third defrosting influence coefficient E3.
Preferably, the value range of the first frost affecting coefficient E1 is 0-60, and the value range of the second frost affecting coefficient is-60-0.
The invention also provides a refrigerator, and a control system of the refrigerator dynamically calculates the frosting time by adopting the calculating method.
Compared with the prior art, the method and the device collect the operation parameters and the use data of the refrigerator in real time and preset frosting time t according to the collection resultPreparation ofThe refrigerator defrosting method has the advantages that real-time correction is carried out to obtain next defrosting time, the defrosting time is more accurate, the refrigerator defrosts at a proper time, frequent defrosting is avoided, energy is saved, environment is protected, meanwhile, the problem of long defrosting interval time can be avoided, single defrosting time is short, temperature fluctuation is small, and the fresh-keeping effect of the refrigerator is good.
Drawings
The invention is described in detail below with reference to examples and figures, in which:
FIG. 1 is a schematic diagram of the computing method of the present invention.
Detailed Description
As shown in fig. 1, the dynamic frosting time calculation method provided by the present invention includes: collecting operation parameters and use data of the refrigerator, and setting the frosting time t according to the collection resultPreparation ofPerforming real-time correction to obtain the next frosting time tn+1。
At the initial stage of power-on of the refrigerator, the next frosting time tn+1The refrigerator starts to time the actual interval time t at the time of power-on for the interval time between the power-on time of the refrigerator and the time of starting defrosting for the first timePractice ofAnd calculating the next frosting time tn+1When the actual interval time reaches the next frosting time tn+1When is, i.e. tPractice of=tn+1When the refrigerator is used, the refrigerator carries out primary defrosting. The next frosting time t is the whole using process after the refrigerator finishes the first defrostingn+1The refrigerator starts to time the actual interval time t when the defrosting is quitted for the time interval between the defrosting quit time and the next defrosting start timePractice ofAnd calculating the next frosting time tn+1When t isPractice of≥tn+1When the refrigerator starts defrosting, the actual interval time t is the time when the refrigerator starts defrostingPractice ofThe reset is cleared.
As described in more detail below, the acquisition results include: environmental coefficient A, door opening coefficient B, compressor coefficient C and defrosting time TnLast defrosting time Tn-1And a defrosting influence coefficient E, wherein the acquisition result is obtained by detecting and processing by a detection device, and the frosting time t is presetPreparation ofThe preset frosting time t can be set to be fixed time in a control system of the refrigerator before leaving a factory, or an operation panel connected with the control system can be arranged on the refrigerator, and the preset frosting time t is manually input into the control system through the operation panel after the refrigerator is electrifiedPreparation of. Next frosting time tn+1The dynamic calculation method of (2) is as follows: t is tn+1=(A+B+C)tPreparation of+（Tn-Tn-1）E /60，tPreparation ofIn units of hours, TnAnd Tn-1In units of minutesA, B, C dynamically changing as the operating parameters of the refrigerator change, tn+1The calculation result also follows the dynamic change of the operation parameters of the refrigerator when t isPractice of≥tn+1At that time, the refrigerator starts defrosting.
The environmental coefficient a is calculated from the ambient temperature T and the ambient humidity RH: a = [1- (x1 × T + y1 × RH) ] + 1/3, x1=1/100, y1=1/2, T is detected by an ambient temperature sensor, typically between 0 and 50 ℃, RH is detected by an ambient humidity sensor, typically between 0% and 100%, the closer a is to 0 when the loop temperature and humidity are high and the closer a is to 1/3 when the loop temperature and humidity are low. For example, a =1/6 when the ambient temperature T is 25 ℃ and the ambient humidity RH is 50%, and a =1/12 when the ambient temperature T is 50 ℃ and the ambient humidity RH is 50%.
The door opening coefficient B is formed by the door opening times D and the door opening time t1Calculating to obtain: b = [1- (x2 × D + y2 × t)1)]1/3, x2=1/60, y2=1/1200, the door opening times D are detected by a sensor, the door opening times D in 24 hours are usually between 0 and 30, and the door opening time t is1Accumulated by its corresponding timer in minutes, typically between 0 seconds and 10 minutes. When the door opening times D are more, the door opening time t is longer1The longer, the closer B is to 0; when the door opening times D are less, the door opening time t1The shorter the distance, the closer B is to 1/3. For example, when the door opening times D is 15 times, the door opening time t1At 5 minutes, B =1/6, and when the door opening times D is 30 times, the door opening time t is1At 5 minutes, B = 1/12. It should be noted that the refrigerator restarts the cumulative door opening times D and the door opening time t each time the defrosting operation is exited1The door opening times D and the door opening time t when the refrigerator starts defrosting1The reset is cleared.
Compressor coefficient C is determined by compressor running time t2And a single compressor run time t3Calculating to obtain: c = [1- (x3 × t)2+y3*t3)]1/3, x3=1/2880, y3=1/2880, compressor single run time t3The running time t of the compressor is obtained by timing of the corresponding timer2By actual interval time tPractice ofSingle run time t of internal occurrence3Are summed up to obtain t3And t2All units of (are minutes)Compressor single run time t used in clock, compressor coefficient C3To calculate tn+1The single running time of the primary compressor which has recently occurred, of course, the actual interval time tPractice ofSingle run time t of internal occurrence3Average value of when the compressor is running t2The longer the compressor single run time t3The longer, the closer C is to 0; when the compressor is running time t2The shorter the compressor single run time t3The shorter the distance, the closer C is to 1/3. For example when the compressor is running at time t212 hours, single run time t of the compressor3At 12 hours, a =1/6, when the compressor is running for t224 hours, single run time t of the compressor3At 12 hours, a = 1/12. It should be noted that the refrigerator restarts the accumulated compressor operation time t every time the defrosting operation is exited2Compressor running time t when refrigerator starts defrosting2The reset is cleared.
The defrosting influence coefficient E is an influence coefficient of the previous defrosting time on the next defrosting time, the dereferencing range of the defrosting influence coefficient E is-60, any one of a first defrosting influence coefficient E1, a second defrosting influence coefficient E2 and a third defrosting influence coefficient E3 is adopted, the first defrosting influence coefficient E1 is a positive number and has a dereferencing range of 0-60, the second defrosting influence coefficient E2 is a negative number and has a dereferencing range of-60-0, and the third defrosting influence coefficient E3 is zero. The defrosting influence coefficients E1 and E2 can be fixed coefficients set in a control system of the refrigerator before the refrigerator leaves a factory, or an operation panel connected with the control system can be arranged on the refrigerator, after the refrigerator is electrified, the defrosting influence coefficients E1 and E2 are manually input into the control system through the operation panel, and the defrosting influence coefficient E/60 can be used for setting the last defrosting time T n-1And the defrosting time TnThe difference in (c) is scaled to hours.
More specifically, when defrosting at this time TnIs more than last defrosting time Tn-1When the frost influence coefficient is the first frost influence coefficient E1; when the defrosting time T is finishednLess than last defrosting time Tn-1The defrosting influence coefficient is a second defrosting influence coefficient E2; when in useThis defrosting time TnEqual to last defrosting time Tn-1The defrosting influence coefficient is a third defrosting influence coefficient E3. For example, the last defrosting time is 30 minutes, the current defrosting time is 40 minutes, the first defrosting influence coefficient E1 is 60, and the next defrosting time is added with (40-30) × 60/60 hours, namely 10 hours. Note that no defrosting, T, occurred at the initial stage of power-on of the refrigeratorn 、Tn-1Are all zero.
The above is merely an example of the method for calculating the coefficient such as A, B, C, E, and is not intended to limit the present invention, and the coefficient may be obtained by other calculation methods besides the above, and the present invention is not limited thereto. The frosting time is gradually calculated according to the calculation method of the invention, and the next frosting time t can be dynamically correctedn+1To make it more accurate, the correction time t is preset every time for simplifying the program and reducing the load of the control system in practical applicationCorrectionCalculating the next frosting time tn+1Same, tCorrectionThe time can be set to be fixed before leaving the factory, or can be manually input during use.
The invention also provides a refrigerator, which comprises a compressor, a defrosting heater, a control system and the like, wherein the control system controls the running states of the compressor, the defrosting heater and other components, the control system is also connected with various detection devices for acquiring the running parameters and the use data of the refrigerator, such as an ambient temperature sensor, an ambient humidity sensor, a plurality of timers and the like, the control system dynamically calculates the frosting time by adopting the calculation method, and at tPractice of≥tn+1And controlling the refrigerator to start defrosting.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A dynamic frosting time calculation method is characterized by comprising the following steps: collecting the operation parameters and the use data of the refrigerator in real time, and setting the frosting time t according to the collecting resultPreparation ofPerforming real-time correction to obtain the next frosting time tn+1；
The acquisition result comprises: environmental coefficient A, door opening coefficient B, compressor coefficient C and defrosting time TnLast defrosting time Tn-1And a defrosting influence coefficient E; the preset frosting time t is set according to the acquisition resultPreparation ofPerforming real-time correction to obtain the next frosting time tn+1The method comprises the following steps: t is tn+1=(A+B+C)tPreparation of+（Tn-Tn-1）E /60；
At the initial stage of power-on of the refrigerator, the next frosting time tn+1The interval time between the power-on time of the refrigerator and the defrosting start time is the interval time;
the next frosting time t is the whole using process after the refrigerator finishes the first defrostingn+1The interval time between the defrosting exiting time and the next defrosting starting time is the interval time;
A. b, C are dynamically changed as the operating parameters of the refrigerator change, tn+1The calculation result also follows the dynamic change of the operation parameters of the refrigerator, tPreparation ofIn units of hours, TnAnd Tn-1The unit of (c) is minutes.
2. The calculation method according to claim 1, wherein the next frosting time tn+1The time interval between the power-on time of the refrigerator and the defrosting start time is the time interval between the power-on time of the refrigerator and the defrosting start time; and/or the next frosting time tn+1The time interval from the defrosting exiting time to the next defrosting starting time is shown.
3. The calculation method according to claim 2, wherein the refrigerator starts to count the actual interval time t at the time of power-on or the time of the present defrosting exitPractice ofWhen t isPractice of≥tn+1At that time, the refrigerator starts defrosting.
4. The calculation method according to claim 1, wherein the environmental coefficient a is calculated from an environmental temperature T and an environmental humidity RH: a = [1- (x1 × T + y1 × RH) ] + 1/3, x1=1/100, y1= 1/2;
t is detected by an ambient temperature sensor and is between 0 and 50 ℃;
the RH is detected by the ambient humidity sensor and is between 0% and 100%.
5. The calculation method according to claim 1, wherein the door opening coefficient B is defined by a door opening number D and a door opening time t1Calculating to obtain: b = [1- (x2 × D + y2 × t)1)]1/3, x2=1/60 and y2=1/1200, and the refrigerator restarts accumulating the door opening times D and the door opening time t at each defrosting exit1The door opening times D and the door opening time t when the refrigerator starts defrosting1Reset zero clearing, door opening time t1Accumulated by its corresponding timer in minutes.
6. Calculation method according to claim 1, characterised in that the compressor factor C is determined by the compressor running time t2And a single compressor run time t3Calculating to obtain: c = [1- (x3 × t)2+y3*t3)]1/3, x3=1/2880, y3=1/2880, the refrigerator restarts the accumulated compressor running time t at each defrost exit2；
Said compressor running time t2By actual interval time tPractice ofSingle run time t of internal occurrence3Are summed up to obtain t3And t2The units of (A) are minutes;
single compressor run time t used in the compressor coefficient C3To calculate tn+1A single run time of the compressor occurring most recently, or the actual interval time tPractice ofSingle run time t of internal occurrence3Average value of (a).
7. The calculation method according to claim 1, wherein the frost affecting coefficient E is any one of a first frost affecting coefficient E1, a second frost affecting coefficient E2, and a third frost affecting coefficient E3, the first frost affecting coefficient E1 is a positive number, the second frost affecting coefficient E2 is a negative number, and the third frost affecting coefficient E3 is zero;
when the defrosting time T is finishednIs more than last defrosting time Tn-1When the frost influence coefficient is the first frost influence coefficient E1;
and/or when the defrosting time T is upnLess than last defrosting time Tn-1If so, the defrosting influence coefficient is a second defrosting influence coefficient E2;
and/or when the defrosting time T is upnEqual to last defrosting time Tn-1Then, the defrosting influence coefficient is a third defrosting influence coefficient E3.
8. The calculation method of claim 7, wherein the first frost affecting coefficient E1 ranges from 0 to 60, and the second frost affecting coefficient ranges from-60 to 0.
9. A refrigerator characterized in that the control system of the refrigerator dynamically calculates the frosting time using the calculation method according to any of claims 1 to 8.
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| CN114485008B (en) * | 2022-01-10 | 2023-01-20 | 珠海格力电器股份有限公司 | Refrigeration time control method and device and refrigeration equipment |
| CN115289767B (en) * | 2022-07-25 | 2024-03-19 | 珠海格力电器股份有限公司 | Defrosting control method and device and refrigerating unit |
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| JPH04283378A (en) * | 1991-03-12 | 1992-10-08 | Matsushita Refrig Co Ltd | Control device of freezer and refrigerator |
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