CN113654296A - Refrigerator defrosting control method and device, storage medium and refrigerator - Google Patents
Refrigerator defrosting control method and device, storage medium and refrigerator Download PDFInfo
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- CN113654296A CN113654296A CN202110925248.9A CN202110925248A CN113654296A CN 113654296 A CN113654296 A CN 113654296A CN 202110925248 A CN202110925248 A CN 202110925248A CN 113654296 A CN113654296 A CN 113654296A
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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
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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
- F25D2600/00—Control issues
- F25D2600/02—Timing
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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
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
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- General Engineering & Computer Science (AREA)
- Defrosting Systems (AREA)
Abstract
The invention provides a refrigerator defrosting control method, a device, a storage medium and a refrigerator, wherein the method comprises the following steps: before the refrigerator is defrosted, acquiring the temperature difference between the evaporator temperature and the freezing set temperature of the refrigerator and the continuous starting time of a compressor; and determining the air return time according to the acquired temperature difference between the evaporator temperature and the freezing set temperature and the continuous starting time of the compressor. The scheme provided by the invention can improve the defrosting effect and reduce the energy consumption of the refrigerator.
Description
Technical Field
The invention relates to the field of control, in particular to a refrigerator defrosting control method and device, a storage medium and a refrigerator.
Background
The working principle of the air-cooled refrigerator is as follows: the external high-temperature air flows through the evaporator arranged in the refrigerator for heat exchange, so that the temperature of the air after heat exchange is reduced, and the cold air with the reduced temperature after heat exchange is blown into the refrigerator compartment through the air duct, thereby achieving the purpose of refrigeration. In the above-mentioned working process, moisture in the high temperature air can condense on its surface frost when meetting cold evaporimeter, the longer along with the live time, easily lead to the refrigeration effect not good, shorten the life of refrigerator, the usual practice in the trade is to arrange a heater in the below of evaporimeter, melt the frost on the evaporimeter through heat-conduction or thermal radiation's mode, when the temperature that the sensor that arranges on the evaporimeter detected reaches the exit temperature of settlement, the heater just stops heating, withdraw from the defrosting process, it needs a large amount of energy consumptions to heat the evaporimeter that just refrigerate the temperature extremely low to certain temperature, and give the evaporimeter refrigeration a moment, heat a large amount of electric powers that can waste a moment.
Disclosure of Invention
The invention mainly aims to overcome the defects of the prior art and provides a refrigerator defrosting control method, a device, a storage medium and a refrigerator, so as to solve the problem that a large amount of energy consumption is needed for heating an evaporator with an extremely low refrigerating temperature to a certain temperature when the refrigerator in the prior art defrosts.
The invention provides a defrosting control method for a refrigerator, which comprises the following steps: acquiring the temperature difference between the evaporator temperature and the freezing set temperature of the refrigerator and the continuous starting time of a compressor before the refrigerator refrigeration cycle finishes and enters defrosting; and determining the return air time according to the acquired temperature difference between the evaporator temperature and the freezing set temperature and the continuous opening time of the compressor so as to execute return air control before defrosting.
Optionally, dividing the temperature difference between the evaporator temperature and the freezing set temperature into more than two temperature difference levels; acquiring a temperature difference between an evaporator temperature and a freezing set temperature of the refrigerator, including: and acquiring the grade of the temperature difference in the more than two temperature difference grades.
Optionally, determining the return air time according to the acquired temperature difference between the evaporator temperature and the freezing set temperature and the continuous on-time of the compressor, including: calculating the return air time x by using the following formula according to the temperature difference and the continuous opening time of the compressor;
x＝ai+bj；
wherein 0< i <1,0< j <1, a is the grade of the temperature difference in the more than two temperature difference grades, and b is the continuous opening time of the compressor.
Optionally, comprising: if the temperature of an evaporator of the refrigerator is higher than that of a freezing chamber before defrosting, determining that the air return time is 0; and/or if the compressor of the refrigerator is not started within a preset time before defrosting, determining that the return air time is 0.
In another aspect, the present invention provides a defrosting control apparatus for a refrigerator, including: the refrigerator comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring the temperature difference between the evaporator temperature and the freezing set temperature of the refrigerator and the continuous starting time of a compressor before the refrigerator refrigeration cycle is finished and defrosting is started; and the determining unit is used for determining the air return time according to the acquired temperature difference between the evaporator temperature and the freezing set temperature and the continuous opening time of the compressor so as to execute air return control before defrosting.
Optionally, dividing the temperature difference between the evaporator temperature and the freezing set temperature into more than two temperature difference levels; the acquiring unit acquires a temperature difference between an evaporator temperature of the refrigerator and a freezing set temperature, and includes: and acquiring the grade of the temperature difference in the more than two temperature difference grades.
Optionally, the determining unit determines the return air time according to the acquired temperature difference between the evaporator temperature and the freezing set temperature and the continuous on-time of the compressor, and includes: calculating the return air time x by using the following formula according to the temperature difference and the continuous opening time of the compressor;
x＝ai+bj；
wherein 0< i <1,0< j <1, a is the grade of the temperature difference in the more than two temperature difference grades, and b is the continuous opening time of the compressor.
Optionally, the determining unit is further configured to: if the temperature of an evaporator of the refrigerator is higher than that of a freezing chamber before defrosting, determining that the air return time is 0; and/or if the compressor of the refrigerator is not started within a preset time before defrosting, determining that the return air time is 0.
A further aspect of the invention provides a storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of any of the methods described above.
Yet another aspect of the present invention provides a refrigerator comprising a processor, a memory, and a computer program stored on the memory and operable on the processor, the processor implementing the steps of any of the methods described above when executing the program.
The invention further provides a refrigerator comprising the refrigerator defrosting control device.
According to the technical scheme of the invention, the amount of available cold is judged by acquiring the temperature difference between the temperature of the evaporator and the freezing set temperature of the refrigerator and the starting time of the compressor before defrosting, so that the air return time is determined, the defrosting effect can be improved, and the energy consumption of the refrigerator is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a defrosting control method for a refrigerator according to an embodiment of the present invention;
fig. 2 shows a structural diagram of a refrigerator of the present invention;
FIG. 3 is a schematic diagram of a defrosting control method for a refrigerator according to an embodiment of the present invention;
fig. 4 is a block diagram of a defrosting control device for a refrigerator according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Before the air-cooled refrigerator is defrosted, the cold energy on the evaporator is available before the defrosting heater (for example, arranged at the lower part of the evaporator) is operated. The method in the industry is that cold air is blown to a compartment by a fan through increasing the air return time. But this return air time is fixed. When the available cold quantity is small, the hot air can enter the refrigerator chamber due to the overlong air return time, and when the available cold quantity is large, the air return time is too short, and the available cold quantity is not fully utilized. Fig. 2 shows a structural diagram of a refrigerator of the present invention. As shown in fig. 2, 1 is a compartment, 2 is a fan, 3 is an evaporator, and 4 is a defrosting heater.
The invention provides a defrosting control method for a refrigerator. The method is mainly used for the air-cooled refrigerator.
Under the normal condition, the refrigerator is after the refrigeration work of a period of time, the steam of incasement can gather and frost on the evaporimeter, in order to guarantee effectual refrigeration effect, can melt the frost on the evaporimeter through the defrosting heater, if just refrigerate before the defrosting, the temperature of evaporimeter is very low, at this moment need a period of time to let the fan blow each room that need refrigerate with these usable cold volumes to, make full use of the refrigeration effect of compressor, generally we call this period of time return air time, the length of return air time can influence usable cold volume and whether transport each room completely from the evaporimeter.
Fig. 1 is a method schematic diagram of an embodiment of a defrosting control method for a refrigerator according to the present invention.
As shown in fig. 1, according to an embodiment of the present invention, the defrost control method includes at least step S110 and step S130.
Step S110, before the refrigerator refrigeration cycle is finished and defrosting is carried out, the temperature difference between the evaporator temperature and the freezing set temperature of the refrigerator and the continuous starting time of the compressor are obtained.
Specifically, the temperature difference a between the evaporator temperature and the freezing set temperature is acquired before the defrosting heater is turned on after the refrigeration of the refrigerator is finished, and the larger the temperature difference is, the more cold energy can be utilized. While acquiring the continuous on-time b of the compressor before defrosting. The longer the compressor is continuously on, the more cold energy is available and the longer the required return air time is.
The temperature difference between the evaporator temperature and the freezing set temperature is classified into a plurality of levels. And acquiring the grade of the temperature difference in the more than two temperature difference grades. For example, the temperature difference is classified into 0 to a range. The temperature difference corresponding to different grades is different in size, for example, the temperature difference in the 0-grade is the smallest, and the temperature difference in the A-grade is the largest.
For example, if the current evaporator temperature is equal to or higher than the freezing set temperature, that is, the temperature difference between the evaporator temperature and the set temperature is greater than or equal to zero, it is level 0; if the temperature difference between the evaporator temperature and the freezing set temperature is less than or equal to 1/2 of the freezing set temperature, the grade A is determined; the gear in which the temperature difference between the evaporator temperature and the freezing set temperature is in the middle (the temperature difference is greater than 1/2 of the freezing set temperature and less than zero) is: temperature difference a 2/freezing set temperature. Wherein the gear is rounded. The greater the temperature difference, the more cold is available. And recording the current temperature difference grade as grade a.
Optionally, if the evaporator temperature of the refrigerator cannot be obtained, the grade of the temperature difference in the two or more temperature difference grades is recorded as 0. For example, if the evaporator sensor or the compartment sensor fails, the temperature difference cannot be calculated, and a is recorded as 0, and used to determine the return air time.
And step S120, determining the air return time according to the acquired temperature difference between the evaporator temperature and the freezing set temperature and the continuous opening time of the compressor, so as to execute air return control before defrosting. The return air is that before the heater heats, the fan is started to blow the cold energy of the evaporator to each compartment.
In one embodiment, the return air time x is calculated according to the temperature difference and the continuous on-time of the compressor by using the following formula;
x＝ai+bj；
wherein 0< i <1,0< j <1, a is the grade of the temperature difference in the two or more temperature difference grades, b is the continuous on-time of the compressor, and the unit of b can be minutes. Wherein ai is taken as a main part, and bj is taken as an auxiliary part. I.e., i is much larger than j and bj maximum is smaller than ai maximum. i. j is the correction coefficient of a and b respectively, and different refrigerators i and j have different values.
Alternatively, if the evaporator temperature of the refrigerator is higher than the freezer temperature before entering the defrosting mode, the return air time is determined to be 0. Specifically, if the evaporator temperature is higher than the freezer temperature before defrosting, the available cooling capacity is zero, and the return air time is zero.
Optionally, if the compressor of the refrigerator is not started within a preset time before defrosting, determining that the return air time is 0. Specifically, if the compressor of the refrigerator is not started within the preset time before defrosting, which indicates that the available cold quantity is zero, the air return time is zero. For example, the compressor is not turned on n minutes before defrosting, and the return air time is zero minutes.
In order to clearly illustrate the technical solution of the present invention, an implementation flow of the defrosting control method for an air-cooled refrigerator according to the present invention is described below with an embodiment.
Fig. 3 is a schematic method diagram of an embodiment of the defrosting control method for an air-cooled refrigerator according to the present invention. As shown in fig. 3, after the refrigeration of the refrigerator is finished, before the refrigerator is defrosted, a temperature difference grade identification position a is recorded according to the grade to which the temperature difference between the evaporator temperature and the freezing set temperature belongs, a compressor opening time identification position b is recorded according to the continuous opening time of the compressor, the air return time is judged according to a and b, air return is carried out according to the air return time, then the defrosting heater is opened for defrosting, and the refrigerator is refrigerated after defrosting is finished.
The invention also provides a defrosting control device of the refrigerator. The device is mainly used for the air-cooled refrigerator.
Under the normal condition, the refrigerator is after the refrigeration work of a period of time, the steam of incasement can gather and frost on the evaporimeter, in order to guarantee effectual refrigeration effect, can melt the frost on the evaporimeter through the defrosting heater, if just refrigerate before the defrosting, the temperature of evaporimeter is very low, at this moment need a period of time to let the fan blow each room that need refrigerate with these usable cold volumes to, make full use of the refrigeration effect of compressor, generally we call this period of time return air time, the length of return air time can influence usable cold volume and whether transport each room completely from the evaporimeter.
Fig. 4 is a schematic structural diagram of an embodiment of a defrosting control device for a refrigerator according to the present invention. As shown in fig. 4, the refrigerator defrost control apparatus 100 includes an acquisition unit 110 and a determination unit 120.
The obtaining unit 110 is configured to obtain a temperature difference between an evaporator temperature and a freezing set temperature of the refrigerator and a continuous on-time of the compressor before the refrigerator refrigeration cycle is finished and defrost is performed.
Specifically, the temperature difference a between the evaporator temperature and the freezing set temperature is acquired before the defrosting heater is turned on after the refrigeration of the refrigerator is finished, and the larger the temperature difference is, the more cold energy can be utilized. While acquiring the continuous on-time b of the compressor before defrosting. The longer the compressor is continuously on, the more cold energy is available and the longer the required return air time is.
The temperature difference between the evaporator temperature and the freezing set temperature is classified into a plurality of levels. The acquiring unit 110 acquires a temperature difference between an evaporator temperature and a freezing set temperature of the refrigerator, and includes: and acquiring the grade of the temperature difference in the more than two temperature difference grades. For example, the temperature difference is classified into 0 to a range. The temperature difference corresponding to different grades is different in size, for example, the temperature difference in the 0-grade is the smallest, and the temperature difference in the A-grade is the largest.
For example, if the current evaporator temperature is equal to or higher than the freezing set temperature, that is, the temperature difference between the evaporator temperature and the set temperature is greater than or equal to zero, it is level 0; if the temperature difference between the evaporator temperature and the freezing set temperature is less than or equal to 1/2 of the freezing set temperature, the grade A is determined; if the temperature difference between the evaporator temperature and the freezing set temperature is in the middle (the temperature difference is greater than 1/2 of the freezing set temperature and less than zero), the shift position is: temperature difference a 2/freezing set temperature, wherein the gear is rounded. The greater the temperature difference, the more cold is available. And recording the current temperature difference as a gear a.
Optionally, if the evaporator temperature of the refrigerator cannot be obtained, the grade of the temperature difference in the two or more temperature difference grades is recorded as 0. For example, if the evaporator sensor or the compartment sensor fails, the temperature difference cannot be calculated, and a is recorded as 0, and used to determine the return air time.
The determination unit 120 is configured to determine a return air time according to the acquired temperature difference between the evaporator temperature and the freezing set temperature and the continuous on-time of the compressor, so as to perform return air control before defrosting. The return air is that before the heater heats, the fan is started to blow the cold energy of the evaporator to each compartment.
In one embodiment, the return air time x is calculated according to the temperature difference and the continuous on-time of the compressor by using the following formula;
x＝ai+bj；
wherein 0< i <1,0< j <1, a is the grade of the temperature difference in the two or more temperature difference grades, b is the continuous on-time of the compressor, and the unit of b can be minutes. Wherein ai is taken as a main part, and bj is taken as an auxiliary part. I.e., i is much larger than j and bj maximum is smaller than ai maximum. i. j is the setting coefficient of a and b, and different refrigerators i and j have different values.
Optionally, the determining unit 120 is further configured to: and if the temperature of the evaporator of the refrigerator is higher than that of the freezing chamber before defrosting, determining that the return air time is 0. Specifically, if the evaporator temperature is higher than the freezer temperature before defrosting, the available cooling capacity is zero, and the return air time is zero.
Optionally, the determining unit 120 is further configured to: and if the compressor of the refrigerator is not started within the preset time before defrosting, determining that the air return time is 0. Specifically, if the compressor of the refrigerator is not started within the preset time before defrosting, which indicates that the available cold quantity is zero, the air return time is zero. For example, the compressor is not turned on n minutes before defrosting, and the return air time is zero minutes.
The invention also provides a storage medium corresponding to the defrosting control method of the refrigerator, and a computer program is stored on the storage medium, and when the program is executed by a processor, the program realizes the steps of any one of the methods.
The invention also provides a refrigerator corresponding to the defrosting control method of the refrigerator, which comprises a processor, a memory and a computer program which is stored on the memory and can run on the processor, wherein the processor realizes the steps of any one of the methods when executing the program. The refrigerator comprises an air-cooled refrigerator.
The invention also provides a refrigerator corresponding to the refrigerator defrosting control device, which comprises any one of the refrigerator defrosting control devices. The refrigerator comprises an air-cooled refrigerator.
Therefore, according to the scheme provided by the invention, the amount of available cold is judged by acquiring the temperature difference between the evaporator temperature and the freezing set temperature of the refrigerator and the starting time of the compressor before defrosting, so that the air return time is determined, the defrosting effect can be improved, and the energy consumption of the refrigerator is reduced.
The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope and spirit of the invention and the following claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hardwired, or a combination of any of these. In addition, each functional unit may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and the parts serving as the control device may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. A defrosting control method for a refrigerator is characterized by comprising the following steps:
acquiring the temperature difference between the evaporator temperature and the freezing set temperature of the refrigerator and the continuous starting time of a compressor before the refrigerator refrigeration cycle finishes and enters defrosting;
and determining the return air time according to the acquired temperature difference between the evaporator temperature and the freezing set temperature and the continuous opening time of the compressor so as to execute return air control before defrosting.
2. The method of claim 1, wherein the temperature difference between the evaporator temperature and the freeze set point temperature is divided into more than two temperature difference levels;
acquiring a temperature difference between an evaporator temperature and a freezing set temperature of the refrigerator, including: and acquiring the grade of the temperature difference in the more than two temperature difference grades.
3. The method of claim 2, wherein determining a return air time based on the captured temperature difference between the evaporator temperature and the freeze setpoint temperature and the continuous compressor on time comprises:
calculating the return air time x by using the following formula according to the temperature difference and the continuous opening time of the compressor;
x＝ai+bj；
wherein 0< i <1,0< j <1, a is the grade of the temperature difference in the more than two temperature difference grades, and b is the continuous opening time of the compressor.
4. The method according to any one of claims 1-3, further comprising:
if the temperature of an evaporator of the refrigerator is higher than that of a freezing chamber before defrosting, determining that the air return time is 0;
and/or the presence of a gas in the gas,
and if the compressor of the refrigerator is not started within the preset time before defrosting, determining that the air return time is 0.
5. A defrosting control device for a refrigerator, comprising:
the refrigerator comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring the temperature difference between the evaporator temperature and the freezing set temperature of the refrigerator and the continuous starting time of a compressor before the refrigerator refrigeration cycle is finished and defrosting is started;
and the determining unit is used for determining the air return time according to the acquired temperature difference between the evaporator temperature and the freezing set temperature and the continuous opening time of the compressor so as to execute air return control before defrosting.
6. The apparatus of claim 5, wherein the temperature difference between the evaporator temperature and the freezing set point temperature is divided into two or more temperature difference levels;
the acquiring unit acquires a temperature difference between an evaporator temperature of the refrigerator and a freezing set temperature, and includes: and acquiring the grade of the temperature difference in the more than two temperature difference grades.
7. The apparatus as claimed in claim 6, wherein the determining unit determines the return air time based on the acquired temperature difference between the evaporator temperature and the freezing set temperature and the continuous on-time of the compressor, and includes:
calculating the return air time x by using the following formula according to the temperature difference and the continuous opening time of the compressor;
x＝ai+bj；
wherein 0< i <1,0< j <1, a is the grade of the temperature difference in the more than two temperature difference grades, and b is the continuous opening time of the compressor.
8. The apparatus according to any of claims 5-7, wherein the determining unit is further configured to:
if the temperature of an evaporator of the refrigerator is higher than that of a freezing chamber before defrosting, determining that the air return time is 0;
and/or the presence of a gas in the gas,
and if the compressor of the refrigerator is not started within the preset time before defrosting, determining that the air return time is 0.
9. A storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 4.
10. A refrigerator comprising a processor, a memory, and a computer program stored in the memory and executable on the processor, the processor executing the program to perform the steps of the method of any one of claims 1 to 4 or the air-cooled refrigerator defrost control apparatus of any one of claims 5 to 8.
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