CN108195133B - Refrigerator and control method and control device thereof - Google Patents
Refrigerator and control method and control device thereof Download PDFInfo
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- CN108195133B CN108195133B CN201711499385.0A CN201711499385A CN108195133B CN 108195133 B CN108195133 B CN 108195133B CN 201711499385 A CN201711499385 A CN 201711499385A CN 108195133 B CN108195133 B CN 108195133B
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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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- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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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
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/12—Sensors measuring the inside temperature
- F25D2700/121—Sensors measuring the inside temperature of particular compartments
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- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a refrigerator control method, which comprises the following steps: acquiring the external environment temperature of the refrigerator and the start-up and shut-down period of the compressor; determining a calculation mode of the running frequency of the compressor according to the external environment temperature of the refrigerator and the on-off period of the compressor, and calculating the running frequency of the compressor according to the determined calculation mode of the running frequency of the compressor; the compressor is controlled to operate at the calculated operating frequency. The invention also discloses a refrigerator control device and a refrigerator. The invention realizes that the refrigerator can determine the frequency meeting the refrigeration requirement according to the current use state, improves the energy efficiency ratio of the compressor, and reduces the waste of energy and unnecessary noise.
Description
Technical Field
The invention relates to the technical field of refrigerators, in particular to a refrigerator control method, a refrigerator control device and a refrigerator.
Background
With the development of the frequency conversion technology of the refrigerator, the frequency conversion refrigerator is larger and larger, and people can live in the refrigerator.
In the existing frequency conversion method, the frequency of the compressor is mainly determined according to different environmental temperatures, the frequency of the compressor is fixed and unchanged at the same environmental temperature, in the actual use of a user, the use condition is very complex, the fixed frequency is determined according to the environmental temperature of the refrigerator singly, and the frequency conversion frequency matched with the current refrigeration requirement cannot be determined accurately, so that the problems of energy waste, noise and the like are caused, and the user experience is influenced.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a refrigerator control method, and aims to determine the frequency meeting the refrigeration requirement according to the current use state of a refrigerator, improve the energy efficiency ratio of a compressor and reduce the waste of energy and unnecessary noise.
In order to achieve the above object, the present invention provides a refrigerator control method, including the steps of:
acquiring the external environment temperature of the refrigerator and the on-off period of a compressor;
determining a calculation mode of the compressor operation frequency in a plurality of calculation modes according to the external environment temperature of the refrigerator and the on-off period of the compressor, and calculating the operation frequency of the compressor according to the determined calculation mode of the compressor operation frequency;
the compressor is controlled to operate at the calculated operating frequency.
Optionally, the refrigerator control method further includes:
when the refrigerator is powered on, detecting whether door opening and closing actions exist in the refrigerator;
and when the refrigerator does not have the door opening and closing action, executing the step of acquiring the external environment temperature of the refrigerator and the on-off period of the compressor.
Optionally, the step of determining a calculation mode of the compressor operating frequency in a plurality of calculation modes according to the external environment temperature of the refrigerator and the on-off period of the compressor, and calculating the operating frequency of the compressor according to the determined calculation mode of the compressor operating frequency includes:
judging whether the compressor is powered on or operated for the first time after defrosting according to the starting and stopping period of the compressor;
if so, determining a calculation mode of the running frequency of the compressor according to the external environment temperature, and calculating the running frequency of the compressor according to the determined calculation mode;
if not, acquiring the first continuous operation time of the compressor, the first user set temperature and the lowest frequency of the compressor;
calculating an operating frequency of the compressor according to the external ambient temperature, a first duration time of the compressor, the first user set temperature, and a lowest frequency of the compressor.
Optionally, when the compressor is powered on or operated after defrosting for the first time, the step of determining a calculation method of the operating frequency of the compressor according to the external environment temperature and calculating the operating frequency of the compressor according to the determined calculation method includes:
judging whether the external environment temperature is greater than a preset threshold value or not;
if so, calculating the running frequency of the compressor according to the highest frequency of the compressor;
and if not, calculating the running frequency of the compressor according to the lowest frequency of the compressor and the external environment temperature.
Optionally, the refrigerator control method further includes:
after the door opening and closing action of the refrigerator is detected, acquiring a first room temperature of the refrigerator and a first shutdown temperature of the compressor in a preset compressor opening and shutdown period;
judging whether the first room temperature and the first shutdown temperature meet the frequency modulation requirement or not;
if so, determining the operating frequency of the compressor according to the first compartment temperature and the first shutdown temperature;
if the operation frequency does not meet the requirement or when the on-off period of the compressor is larger than the preset compressor on-off period, executing a calculation mode of determining the operation frequency of the compressor in various calculation modes according to the external environment temperature of the refrigerator and the on-off period of the compressor, and calculating the operation frequency of the compressor according to the determined operation frequency calculation mode of the compressor; and/or the presence of a catalyst in the reaction mixture,
before the step of obtaining the first compartment temperature of the refrigerator and the first shutdown temperature of the compressor in the preset compressor startup and shutdown period, the method further comprises the following steps:
after the door opening and closing action of the refrigerator is detected, judging whether the duration time of the door opening and closing action is greater than or equal to a first preset time or not;
and if so, executing the step of acquiring a first compartment temperature of the refrigerator and a first shutdown temperature of the compressor in a preset compressor startup and shutdown period.
Optionally, the step of determining whether the first room temperature and the first shutdown temperature meet the frequency modulation requirement includes:
determining a corresponding frequency modulation temperature threshold according to the external environment temperature, and calculating a first temperature difference value of the first room temperature and the first shutdown temperature;
judging whether the first temperature difference value is larger than or equal to a frequency modulation temperature threshold value or not;
if so, judging that the first room temperature and the first shutdown temperature meet the frequency modulation requirement;
if not, the first room temperature and the first shutdown temperature are judged not to meet the frequency modulation requirement.
Optionally, the step of determining the operating frequency of the compressor according to the first compartment temperature and the first shutdown temperature comprises:
determining corresponding frequency according to the frequency modulation temperature interval in which the first temperature difference value is located;
and taking the corresponding frequency as the running frequency of the compressor.
Optionally, the refrigerator control method further includes:
when the compressor is not in a first starting operation stage after power-on or defrosting and the external environment temperature is greater than a preset threshold value, acquiring a second frequency of the compressor with the continuous operation time greater than a second preset time;
increasing the second frequency according to the second frequency and a preset adjusting parameter;
taking the increased second frequency as an operating frequency of the compressor; and/or the presence of a catalyst in the reaction mixture,
the step of acquiring a second frequency at which the compressor operation duration is greater than a second preset time comprises:
and acquiring the second frequency within a preset time period every other preset time period.
Furthermore, in order to achieve the above object, the present invention also provides a refrigerator control apparatus comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, the computer program implementing the steps of the refrigerator control method as described in any one of the above when executed by the processor.
In addition, in order to achieve the above object, the present invention also provides a refrigerator including the refrigerator control apparatus as described above.
According to the refrigerator control method provided by the embodiment of the invention, the calculation mode of the running frequency of the compressor is determined according to the acquired external environment temperature and the on-off period of the compressor, the running frequency of the compressor is calculated according to the determined running frequency calculation mode of the compressor, and the compressor is controlled to run at the calculated running frequency. The using states of the refrigerator can be divided in advance according to different compressor starting and stopping periods and different external environment temperatures, the divided different using states of the refrigerator have different compressor operating frequency calculation modes corresponding to the different using states, and the operating frequency of the compressor is determined according to the calculation modes in the using process of the refrigerator, so that the refrigerator can determine the frequency meeting the refrigeration requirement according to the current using state, the energy efficiency ratio of the compressor is improved, and the energy waste and the unnecessary noise are reduced.
Drawings
FIG. 1 is a schematic diagram of a hardware device in a refrigerator according to an embodiment of the present invention;
FIG. 2 is a first flowchart of an embodiment of a refrigerator control method according to the present invention;
FIG. 3 is a second flowchart of an embodiment of a refrigerator control method according to the present invention;
FIG. 4 is a third flowchart of an embodiment of a refrigerator control method according to the present invention;
FIG. 5 is a fourth flowchart illustrating a refrigerator control method according to an embodiment of the present invention;
FIG. 6 is a fifth flowchart illustrating a refrigerator control method according to an embodiment of the present invention;
FIG. 7 is a sixth flowchart illustrating a refrigerator control method according to an embodiment of the present invention;
fig. 8 is a seventh flowchart illustrating a refrigerator control method according to an embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main solution of the embodiment of the invention is as follows: acquiring the external environment temperature of the refrigerator and the start-up and shut-down period of the compressor; determining a calculation mode of the running frequency of the compressor according to the external environment temperature of the refrigerator and the on-off period of the compressor, and calculating the running frequency of the compressor according to the determined calculation mode of the running frequency of the compressor; the compressor is controlled to operate at the calculated operating frequency.
In the prior art, the running frequency of the compressor can only be determined through the external environment temperature, so that the method is single, the adaptability is not strong, and energy waste and unnecessary noise are easily caused.
The invention provides a solution, which can ensure that the refrigerator can meet the frequency of refrigeration requirements according to the current use state, improve the energy efficiency ratio of a compressor and reduce the waste of energy and unnecessary noise.
An embodiment of the present invention provides a refrigerator control device, as shown in fig. 1, fig. 1 is a schematic structural diagram of the refrigerator control device according to the embodiment of the present invention.
As shown in fig. 1, the refrigerator may include: the processor 1001, for example, a CPU, a memory 1002, a user parameter setting module 1003, a temperature sensor 1004, a door opening and closing signal generation module 1005 and a defrosting signal generation module 1006 of a refrigerator, a compressor 1007, and the like. The components are in communication connection.
The memory 1002 may be a high-speed RAM memory or a non-volatile memory (e.g., a disk memory). The memory 1002 may alternatively be a storage device separate from the processor 1001.
The user parameter setting module 1003 may include a display screen, an input unit such as a keyboard or a touch screen, and the like, and is used for acquiring the setting parameters of the user.
The temperature sensor 1004 is disposed outside the refrigerator to acquire an ambient temperature outside the refrigerator. Specifically, the temperature sensor 1004 may be a detection device disposed on an outer wall of the refrigerator, or may be a detection device disposed in an environment where the refrigerator is disposed independently of the refrigerator.
A door opening and closing signal generating module 1005 of the refrigerator is configured to generate a signal and send the signal to the processor 1001 when detecting that there is a door opening or closing motion of the refrigerator.
The defrosting signal generating module 1006 is configured to send corresponding signals of start, end, and the like to the processor 1001 when the refrigerator is defrosted.
The door opening and closing signal generation module 1005 and the defrosting signal generation module 1006 of the refrigerator may be integrally installed on the processor 1001.
Those skilled in the art will appreciate that the configuration of the device shown in fig. 1 is not intended to be limiting of the device and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, the memory 1002, which is a kind of computer storage medium, may include therein an operating system, a user interface module, and a refrigerator control method. And the processor 1001 may be used to call a refrigerator control program stored in the memory 1002 and perform the following step operations of the refrigerator control method.
An embodiment of the present invention provides a control apparatus for a refrigerator, where the refrigerator includes a memory 1002, a processor 1001, and a computer program stored in the memory 1002 and operable on the processor, and when the computer program is executed by the processor, the steps of the refrigerator control method as described below are implemented.
The embodiment of the invention provides a refrigerator, which comprises the refrigerator control device. The refrigerator can be an air-cooled refrigerator or a direct-cooled refrigerator. The refrigerator control device can be a control device arranged in the refrigerator, and can also be an external control device independent of the refrigerator.
Referring to fig. 2, an embodiment of the present invention provides a refrigerator control method, including:
step S10, obtaining the external environment temperature of the refrigerator and the on-off period of the compressor;
step S20, determining the calculation mode of the compressor operation frequency according to the external environment temperature of the refrigerator and the on-off period of the compressor, and calculating the operation frequency of the compressor according to the determined calculation mode of the compressor operation frequency;
and step S30, controlling the compressor to operate at the calculated operating frequency.
The external ambient temperature refers to an ambient temperature of an indoor environment in which the refrigerator is located. After the refrigerator is powered on, the refrigerator is started and stopped for a plurality of times according to the refrigeration requirement, and one-time starting and one-time stopping are combined into one starting and stopping period.
Before the steps are executed, the refrigerator can be classified according to the using state of the refrigerator, such as an unfrozen stage after power-on, a stage after defrosting, a stage after door opening and closing and the like; secondly, as the load of the refrigerator is increased at the beginning of each stage, and the running state of the refrigerator is gradually stabilized during subsequent running, the refrigerator can be divided into a plurality of startup and shutdown periods of the compressor according to different states of different stages, such as the startup and shutdown period of the first compressor after electrification or defrosting, the startup and shutdown period except the first startup and shutdown period after electrification or defrosting and the like, and can be distinguished according to actual requirements; in addition, because the frequency of the compressor is influenced by the external environment temperature, different compressor frequency determination modes can be formulated in the same start-up and shut-down period by combining different external environment temperatures on the basis of distinguishing different start-up and shut-down periods, for example, the external environment temperature is divided into different temperature intervals.
Specifically, an external environment temperature interval in one startup and shutdown period can correspond to a calculation mode of the compressor frequency, so that the refrigerator can determine an accurate compressor frequency value corresponding to the current use state according to different refrigerator use states. In addition, an external ambient temperature interval during an on-off cycle may correspond to a fixed operating frequency value. The specific calculation mode can be obtained by fitting according to actual use requirements and by combining the setting parameters of a user, the operation parameters of the refrigerator, the continuous operation time of the compressor and the like under the condition of meeting the state.
According to the refrigerator control method, different calculation modes of the running frequency of the compressor are set according to different compressor starting and stopping periods and different external environment temperatures in advance, in the using process of the refrigerator, the calculation mode of the running frequency of the compressor is determined according to the obtained external environment temperature and the starting and stopping periods where the compressor is located, the running frequency of the compressor is calculated according to the determined calculation mode of the running frequency of the compressor, the compressor is controlled to run at the calculated running frequency, the refrigerator can determine the frequency meeting the refrigeration requirement according to the current using state, the energy efficiency ratio of the compressor is improved, and the waste of energy and unnecessary noise are reduced.
Further, as shown in fig. 3, the refrigerator control method further includes:
step S40, after the refrigerator is powered on, detecting whether the refrigerator has door opening and closing actions;
when the door opening and closing action does not exist in the refrigerator, the step S10 is executed.
When there is a door opening and closing action in the refrigerator, step S50 is executed.
In the running process of the refrigerator, the load of the refrigerator is suddenly and unstably changed due to door opening and closing actions of the refrigerator, therefore, when the door opening and closing actions exist, another compressor frequency determining mode can be formulated according to the complex situation of the door opening and closing actions, when the door opening and closing actions do not exist in the refrigerator, the refrigerator is in a regular running state, the external environment temperature of the refrigerator and the starting and stopping period of the compressor can be obtained, the calculating mode of the frequency of the compressor is determined according to the external environment temperature and the starting and stopping period of the compressor, the running frequency of the compressor is calculated according to the determined calculating mode, and the obtained running frequency of the compressor is more accurate.
Specifically, as shown in fig. 3, the step of determining the calculation mode of the operating frequency of the compressor according to the external environment temperature of the refrigerator and the on-off period of the compressor, and calculating the operating frequency of the compressor according to the determined calculation mode of the operating frequency of the compressor includes:
step S21, judging whether the compressor is powered on or operated for the first time after defrosting according to the starting and stopping period of the compressor;
if yes, go to step S22; if not, the steps S23 and S24 are executed.
Step S22, determining the calculation mode of the compressor operation frequency according to the external environment temperature, and calculating the operation frequency of the compressor according to the determined calculation mode;
after the compressor is powered on or is operated after defrosting for the first time, the rapid cooling is needed to meet the refrigeration requirement of the refrigerator, and because the external environment temperature directly affects the heat exchange efficiency of the compressor, the calculation mode of the operation frequency of the compressor can be directly determined according to the external environment temperature, so that the higher heat exchange efficiency is ensured, and the rapid cooling requirement is ensured. Specifically, the external environment temperature and the calculation mode of the compressor operation frequency corresponding to the external environment temperature can be preset, in order to make the obtained frequency more accurate, the external environment temperature can be divided into a plurality of temperature intervals, and each temperature interval corresponds to the calculation mode of the compressor operation frequency.
Step S23, acquiring a first continuous operation time of the compressor, a first user set temperature and a lowest frequency of the compressor;
step S24, calculating an operating frequency of the compressor according to the external ambient temperature, the first duration time of the compressor, the first user set temperature, and the lowest frequency of the compressor.
When the compressor is not in the first starting operation stage after power-on or defrosting, the operation frequency of the compressor can be calculated by combining the actual operation parameters of the refrigerator, such as the external environment temperature, the first user set temperature of the first continuous operation time of the compressor, the lowest frequency of the compressor and the like, so as to obtain the accurate operation frequency of the compressor. Specifically, the minimum increment of the compressor frequency can be determined according to the external environment temperature, the first continuous operation time of the compressor and the first user set temperature, the minimum increment is increased on the basis of the minimum frequency to obtain the operation frequency of the compressor, the lowest operation frequency of the compressor can be realized while the current refrigeration requirement of the refrigerator is met, the energy efficiency ratio of the refrigerator is improved, energy consumption is reduced, and noise is reduced.
The specific calculation formula can be determined by fitting according to different corresponding relations among the external environment temperature, the first continuous operation frequency of the compression molding machine, the first user set temperature and the lowest frequency of the compressor. It should be noted that, in addition to the above parameters, the operating frequency of the compressor may also be obtained by calculating other actual operating parameters of the refrigerator, and may be set according to specific requirements, which is not described herein again.
Specifically, as shown in fig. 4, when the compressor is powered on or operated after defrosting for the first time, the step of determining the calculation method of the operating frequency of the compressor according to the external environment temperature and calculating the operating frequency of the compressor according to the determined calculation method includes:
step S221, judging whether the external environment temperature is greater than a preset threshold value;
if so, step S2211 is performed, and if not, step S2212 is performed.
Step S2211, calculating an operating frequency of the compressor according to a highest frequency of the compressor;
step S2212, calculating an operating frequency of the compressor according to the lowest frequency of the compressor and the external environment temperature.
When the external environment temperature is greater than the preset threshold value, the heat exchange efficiency of the refrigerator is considered to be low at the moment, the running frequency of the compressor can be calculated according to the highest frequency of the compressor, different highest frequency adjusting parameters are specifically set according to different external environment temperatures, and the highest frequency after adjustment of the adjusting parameters is used as the running frequency of the compressor, so that the compressor can be in a higher running frequency, and the quick refrigeration of the refrigerator is realized. It should be noted that the operating frequency of the compressor at this time should be increased specifically with the increase of the external ambient temperature. Specifically, when the external environment temperature is greater than the preset threshold value, the highest frequency of the compressor is directly used as the running frequency of the compressor, so that the refrigerating speed is increased, and the refrigerator can quickly meet the requirements of users. The preset threshold value can be set according to actual requirements.
In addition, when the external environment temperature is less than or equal to the preset threshold value, the refrigerator can be considered to have better heat exchange efficiency, the running frequency of the compressor can be calculated through the lowest frequency of the compressor and the external environment temperature, the frequency of the compressor can be optimized while the refrigeration speed is guaranteed, the energy consumption of the refrigerator is improved, and the waste of energy and the noise are avoided. Specifically, the frequency increment adapted to the current external environment temperature can be determined through the external environment temperature, and the operating frequency of the compressor is obtained by increasing the frequency increment on the basis of the lowest frequency, so that the optimization of the operating frequency of the compressor is realized.
Further, as shown in fig. 5, the refrigerator control method further includes:
step S50, after detecting that the door opening and closing action exists in the refrigerator, acquiring a first compartment temperature of the refrigerator and a first shutdown temperature of the compressor in a preset compressor starting and shutdown period;
step S60, judging whether the first room temperature and the first shutdown temperature meet the frequency modulation requirement;
if yes, step S61 is executed, and if not, or the on/off cycle of the compressor is greater than the preset on/off cycle of each compressor, step S62 is executed.
Step S61, determining the operation frequency of the compressor according to the first compartment temperature and the first shutdown temperature;
step S62, executing the step of determining the operation frequency of the compressor according to the external environment temperature of the refrigerator and the on-off period of the compressor, and calculating the operation frequency of the compressor according to the determined operation frequency calculation method of the compressor.
The specific value of the preset compressor start-stop cycle can be set according to the actual situation. In the preset compressor start-stop period after the door opening and closing action, the operation of the refrigerator is considered to be greatly influenced by the door opening and closing action. The first compartment temperature may be specifically a temperature indicative of an inside of the refrigerator, and may be specifically a temperature of the freezing compartment, a temperature of the refrigerating compartment, or a temperature derived from the temperature of the freezing compartment and the temperature of the refrigerating compartment, and the like. The first shutdown temperature may be in particular a set temperature of a user or a shutdown temperature determined by the compressor in adaptation to a set parameter of a user.
In a preset compressor startup and shutdown period, whether the compressor meets the frequency modulation requirement of the compressor is judged according to the first compartment temperature and the first shutdown temperature, the frequency modulation requirement can be set according to actual conditions, a limit value can be specifically set according to the temperature difference value between the first compartment temperature and the first shutdown temperature, the frequency modulation requirement is met when the limit value is exceeded, and the frequency modulation requirement is not met when the limit value is not exceeded. If the frequency modulation requirement is met, the current frequency is indicated to be not met with the current running state of the refrigerator, and the frequency can be adjusted according to the first compartment temperature and the first shutdown temperature; if the frequency modulation requirement is not met, the corresponding compressor running frequency can be determined according to the external environment temperature and the on-off period of the compressor.
By the mode, the frequency value meeting the current refrigerator running state can be determined when door opening and closing actions exist in the refrigerator, and the energy efficiency ratio of the refrigerator is improved.
Specifically, as shown in fig. 6, the step of determining whether the first room temperature and the first shutdown temperature meet the frequency modulation requirement includes:
step S601, determining a corresponding frequency modulation temperature threshold according to the external environment temperature, and calculating a first temperature difference value of the first room temperature and the first shutdown temperature;
step S602, judging whether the first temperature difference value is greater than or equal to a frequency modulation temperature threshold value;
if yes, go to step S63; if not, step S64 is executed.
Step S603, judging that the first room temperature and the first shutdown temperature meet the frequency modulation requirement;
step S604, determining that the first room temperature and the first shutdown temperature do not satisfy the frequency modulation requirement.
And the frequency modulation temperature difference threshold is used for judging whether the first compartment temperature and the first shutdown temperature meet the frequency modulation requirement. In order to adapt to more complicated refrigerator running state, different external environment temperatures can correspond to different frequency modulation temperature difference thresholds, and when the first temperature difference value is greater than or equal to the frequency modulation temperature difference threshold, the frequency modulation requirement is met, and when the first temperature difference value is less than the frequency modulation temperature difference threshold, the frequency modulation requirement is not met.
Specifically, as shown in fig. 7, the step of determining the operating frequency of the compressor according to the first compartment temperature and the first shutdown temperature includes:
step S611, determining a corresponding frequency according to the frequency modulation temperature interval where the first temperature difference value is located;
and step S612, taking the corresponding frequency as the running frequency of the compressor.
When the first temperature difference value is greater than the frequency modulation temperature difference threshold value, in order to adapt to a more complex refrigerator operation state and determine more accurate compressor operation frequency, the temperature difference range greater than the frequency modulation temperature difference threshold value can be divided into a plurality of sections in advance, and each section corresponds to one compressor operation frequency or a calculation mode of the compressor operation frequency. And determining the running frequency of the compressor meeting the current running state of the refrigerator according to the temperature difference interval in which the first temperature difference value is positioned.
Further, before the step of obtaining a first compartment temperature of the refrigerator and a first shutdown temperature of the compressor in a preset compressor startup and shutdown period, the method further includes:
after the door opening and closing action of the refrigerator is detected, judging whether the duration time of the door opening and closing action is greater than or equal to a first preset time or not;
and if so, executing the step of acquiring a first compartment temperature of the refrigerator and a first shutdown temperature of the compressor in a preset compressor startup and shutdown period.
If the frequency of the compressor is re-determined according to the mode when the door opening and closing action duration time reaches the first preset time, the influence of the door opening and closing on the refrigerator load is considered to be small, and the compressor can be controlled to continuously run at the existing frequency. By the mode, the running frequency can be ensured to adapt to the running state of the current refrigerator, and the running stability of the compressor is ensured.
Further, as shown in fig. 8, the refrigerator control method further includes:
step S70, when the compressor is not in a first starting operation stage after power-on or defrosting and the external environment temperature is greater than a preset threshold, acquiring a second frequency that the continuous operation time of the compressor is greater than a second preset time;
step S80, increasing the second frequency according to preset adjustment parameters;
and step S90, setting the increased second frequency as the operating frequency of the compressor.
When the compressor is not in a first starting operation stage after power-on or defrosting and the external environment temperature is greater than a preset threshold value, the heat exchange efficiency of the compressor is low, if the continuous operation of the compressor is greater than a second preset time at the moment, which indicates that the frequency of the compressor does not meet the current heat exchange requirement, the second frequency needs to be increased according to a preset adjustment parameter, and the compressor is controlled to operate according to the increased second frequency, so that the refrigeration requirement of the refrigerator is met. And when the compressor is started next time, the compressor operates according to the second frequency after being increased. The second preset time can be set according to actual conditions. It should be noted that the second frequency after the increase does not exceed the maximum frequency of the compressor at the maximum.
Specifically, the adjustment parameter may be a preset frequency adjustment amplitude, and the frequency adjustment amplitude is added to the second frequency to obtain the frequency of the compressor; or the frequency adjustment value is correspondingly increased according to the different intervals where the second frequency is located; and the adjustment value can also be an adjustment value corresponding to the current operation parameter of the refrigerator, such as an adjustment value determined according to the continuous operation time of the compressor, the temperature set by a user and the like.
For example, when the external environment temperature is greater than a preset threshold, the operating frequency of the compressor is divided into a plurality of gears, the gear where the current compressor frequency is located is determined, and when the frequency that the compressor continuously operates for more than a second preset time is obtained, the operating frequency of the compressor is controlled to increase the first gear operation.
It should be noted that if the second frequency that is continuously operated for more than the second preset time is not obtained, the compressor may be controlled to continue to operate at the current frequency, or the operation frequency of the compressor may be appropriately reduced according to other rules.
By the mode, when the external environment temperature is higher than the preset threshold value, the frequency of the compressor can be adjusted according to the current heat exchange state of the compressor, so that the frequency of the compressor can be adjusted adaptively while the heat exchange efficiency of the refrigerator is ensured.
Further, the step of obtaining a second frequency at which the compressor operation duration is greater than a second preset time includes:
and acquiring the second frequency within a preset time period every other preset time period.
And when the compressor is not in a first starting operation stage after power-on or defrosting and the external environment temperature is greater than a preset threshold value, acquiring a second frequency that the continuous operation time of the compressor exceeds 30 minutes within 1 hour.
By the mode, the running frequency of the compressor can be adjusted circularly when the external environment temperature is greater than the preset threshold value, and the accuracy of the determined frequency is improved.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. 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 (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A refrigerator control method is characterized by comprising the following steps:
acquiring the external environment temperature of the refrigerator and the on-off period of a compressor;
determining a calculation mode of the compressor operation frequency in a plurality of calculation modes according to the external environment temperature of the refrigerator and the on-off period of the compressor, and calculating the operation frequency of the compressor according to the determined calculation mode of the compressor operation frequency;
controlling the compressor to operate at the calculated operating frequency;
the step of determining a calculation mode of the compressor operation frequency in a plurality of calculation modes according to the external environment temperature of the refrigerator and the on-off period of the compressor, and calculating the operation frequency of the compressor according to the determined calculation mode of the compressor operation frequency comprises the following steps:
judging whether the compressor is powered on or operated for the first time after defrosting according to the starting and stopping period of the compressor;
if so, determining a calculation mode of the running frequency of the compressor according to the external environment temperature, and calculating the running frequency of the compressor according to the determined calculation mode;
if not, acquiring the first continuous operation time of the compressor, the first user set temperature and the lowest frequency of the compressor;
calculating an operating frequency of the compressor according to the external ambient temperature, a first duration time of the compressor, the first user set temperature, and a lowest frequency of the compressor.
2. The refrigerator control method as claimed in claim 1, further comprising:
when the refrigerator is powered on, detecting whether door opening and closing actions exist in the refrigerator;
and when the refrigerator does not have the door opening and closing action, executing the step of acquiring the external environment temperature of the refrigerator and the on-off period of the compressor.
3. The method as claimed in claim 2, wherein the step of determining the operation frequency of the compressor according to the external ambient temperature when the compressor is powered on or operated for the first time after defrosting, and calculating the operation frequency of the compressor according to the determined operation frequency comprises:
judging whether the external environment temperature is greater than a preset threshold value or not;
if so, calculating the running frequency of the compressor according to the highest frequency of the compressor;
and if not, calculating the running frequency of the compressor according to the lowest frequency of the compressor and the external environment temperature.
4. The refrigerator control method as claimed in claim 3, further comprising:
after the door opening and closing action of the refrigerator is detected, acquiring a first room temperature of the refrigerator and a first shutdown temperature of the compressor in a preset compressor opening and shutdown period;
judging whether the first room temperature and the first shutdown temperature meet the frequency modulation requirement or not;
if so, determining the operating frequency of the compressor according to the first compartment temperature and the first shutdown temperature;
if the operation frequency does not meet the requirement or when the on-off period of the compressor is larger than the preset compressor on-off period, executing a calculation mode of determining the operation frequency of the compressor in various calculation modes according to the external environment temperature of the refrigerator and the on-off period of the compressor, and calculating the operation frequency of the compressor according to the determined operation frequency calculation mode of the compressor; and/or the presence of a catalyst in the reaction mixture,
before the step of obtaining the first compartment temperature of the refrigerator and the first shutdown temperature of the compressor in the preset compressor startup and shutdown period, the method further comprises the following steps:
after the door opening and closing action of the refrigerator is detected, judging whether the duration time of the door opening and closing action is greater than or equal to a first preset time or not;
and if so, executing the step of acquiring a first compartment temperature of the refrigerator and a first shutdown temperature of the compressor in a preset compressor startup and shutdown period.
5. The method as claimed in claim 4, wherein the step of determining whether the first compartment temperature and the first shutdown temperature satisfy a frequency modulation requirement comprises:
determining a corresponding frequency modulation temperature threshold according to the external environment temperature, and calculating a first temperature difference value of the first room temperature and the first shutdown temperature;
judging whether the first temperature difference value is larger than or equal to a frequency modulation temperature threshold value or not;
if so, judging that the first room temperature and the first shutdown temperature meet the frequency modulation requirement;
if not, the first room temperature and the first shutdown temperature are judged not to meet the frequency modulation requirement.
6. The method as claimed in claim 5, wherein the step of determining the operating frequency of the compressor based on the first compartment temperature and the first stopping temperature comprises:
determining corresponding frequency according to the frequency modulation temperature interval in which the first temperature difference value is located;
and taking the corresponding frequency as the running frequency of the compressor.
7. The refrigerator control method of any one of claims 1 to 6, further comprising:
when the compressor is not in a first starting operation stage after power-on or defrosting and the external environment temperature is greater than a preset threshold value, acquiring a second frequency of the compressor with the continuous operation time greater than a second preset time;
increasing the second frequency according to the second frequency and a preset adjusting parameter;
taking the increased second frequency as an operating frequency of the compressor; and/or the presence of a catalyst in the reaction mixture,
the step of acquiring a second frequency at which the compressor operation duration is greater than a second preset time comprises:
and acquiring the second frequency within a preset time period every other preset time period.
8. A refrigerator control apparatus, characterized in that the refrigerator control apparatus comprises a memory, a processor, and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the refrigerator control method according to any one of claims 1 to 7.
9. A refrigerator characterized by comprising the refrigerator control apparatus as claimed in claim 8.
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| CN201711499385.0A CN108195133B (en) | 2017-12-29 | 2017-12-29 | Refrigerator and control method and control device thereof |
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| CN113915938B (en) * | 2021-02-24 | 2023-06-23 | 海信冰箱有限公司 | Refrigerator and control method thereof |
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| CN113915901B (en) * | 2021-06-10 | 2022-12-06 | 海信冰箱有限公司 | Refrigerator and constant-temperature refrigeration method thereof |
| CN114279142B (en) * | 2021-12-29 | 2023-11-14 | 海信容声（扬州）冰箱有限公司 | Refrigerator, variable frequency compressor system and control method of variable frequency compressor system |
| CN114646167B (en) * | 2022-03-15 | 2023-06-23 | 海信冰箱有限公司 | Refrigerator and control method of variable frequency compressor of refrigerator |
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