CN113883820A - Air-cooled refrigerator frequency conversion control method and device and air-cooled refrigerator - Google Patents
Air-cooled refrigerator frequency conversion control method and device and air-cooled refrigerator Download PDFInfo
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- CN113883820A CN113883820A CN202111173176.3A CN202111173176A CN113883820A CN 113883820 A CN113883820 A CN 113883820A CN 202111173176 A CN202111173176 A CN 202111173176A CN 113883820 A CN113883820 A CN 113883820A
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- fan
- rotating speed
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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
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
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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
- F25D25/00—Charging, supporting, and discharging the articles to be cooled
- F25D25/02—Charging, supporting, and discharging the articles to be cooled by shelves
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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
- F25D25/00—Charging, supporting, and discharging the articles to be cooled
- F25D25/02—Charging, supporting, and discharging the articles to be cooled by shelves
- F25D25/024—Slidable shelves
- F25D25/025—Drawers
Abstract
The application relates to a variable frequency control method and device of an air-cooled refrigerator and the air-cooled refrigerator, wherein the variable frequency control method of the air-cooled refrigerator comprises the steps of obtaining an initial value of load weight in a refrigerating chamber, determining the initial rotating speed of a compressor according to the initial value of the load weight, and judging whether the load weight in the refrigerating chamber is increased or not; if so, the rotating speed of the fan and/or the rotating speed of the compressor are/is adjusted according to the load weight change value, the constant cooling rate of the refrigerating chamber is maintained by dynamically controlling the rotating speeds of the compressor and the fan in the refrigerator, the rotating speeds of the compressor and the fan are automatically adjusted according to the weight of food materials stored in the refrigerator, the user experience is improved, a good refrigerating effect is achieved, the initial gear value is set according to the weight of the food materials, so that the running gears of the fan and the compressor are matched with the weight of the food materials when the refrigerator starts refrigerating, and a better energy-saving effect is achieved.
Description
Technical Field
The application belongs to the technical field of variable frequency refrigerators, and particularly relates to a variable frequency control method and device for an air-cooled refrigerator and the air-cooled refrigerator.
Background
With the continuous development of the frequency conversion technology, the frequency conversion refrigerator is more and more popular. The inverter refrigerator has the greatest characteristic that the rotating speed of the inverter compressor is variable, and the lower the rotating speed is, the lower the power consumption of the refrigerator is, and the more energy is saved. The air-cooled refrigerator comprises a compressor and a fan which are used for completing refrigeration, and the existing stage air-cooled freezing and refrigerating box acquires the ambient temperature through an ambient temperature sensor and controls the rotating speed of the compressor or the fan of the air-cooled refrigerator by combining with the gear set by a user. Therefore, when the refrigerator is powered on and started, the gear setting is not reasonable, and the refrigerating effect of starting refrigeration is not matched with the total amount of food materials in the refrigerator. In addition, under the condition of the same environment temperature and without changing the set temperature gear, the rotating speed of a compressor and the rotating speed of a fan of the refrigerator can be kept unchanged, and when a user uses the refrigerator, food in the refrigerator is continuously changed, so that the user needs to manually adjust the refrigerating gear of the refrigerator in the using process to adapt to the continuous change of the total amount of the food in the refrigerator, and the manual adjustment has delay and errors, thereby affecting the refrigerating effect and the energy saving performance of the refrigerator.
Disclosure of Invention
The application provides a frequency conversion control method and device for an air-cooled refrigerator and the air-cooled refrigerator, and aims to overcome the problems that when the refrigerator is powered on and started, the refrigeration effect generated by an initial set gear is not matched with the total amount of food materials in the refrigerator, or the refrigeration effect and the energy conservation of the refrigerator are influenced by delaying and errors generated by manually adjusting the refrigeration gear of the refrigerator when the total amount of food in the refrigerator is continuously changed.
In a first aspect, the present application provides a frequency conversion control method for an air-cooled refrigerator, including:
acquiring an initial value of the load weight in the refrigerating chamber;
determining the initial rotating speed of the compressor according to the initial value of the load weight;
judging whether the load capacity in the refrigerating chamber is increased or not;
if yes, adjusting the fan rotating speed and/or the compressor rotating speed according to the load weight change value.
Further, the method also comprises the following steps:
acquiring the machine type of the air-cooled refrigerator and the ambient temperature of the air-cooled refrigerator;
and determining the upper limit of the rotating speed of the compressor and the upper limit of the rotating speed of the fan according to the type of the air-cooled refrigerator and the ambient temperature.
Further, the adjusting the fan speed and/or the compressor speed according to the load weight variation value includes:
increasing the rotating speed gear of the fan to the gear corresponding to the upper rotating speed limit of the fan;
calculating a first cooling rate of the fan after the fan runs for a preset interval time at a rotating speed corresponding to a gear rotating speed at the upper limit of the rotating speed of the fan;
judging whether the first cooling rate is in a cooling rate range under a preset corresponding working condition;
if so, determining the current fan rotating speed gear according to the current load weight;
otherwise, the rotating speed gear of the compressor is increased within the rotating speed upper limit range of the compressor according to the preset compressor stepping value.
Further, after determining the current fan speed gear according to the current load weight, the method further includes:
calculating a second cooling rate after the fan operates at the current fan speed gear for a preset interval time;
judging whether the second cooling rate is in a cooling rate range under a preset corresponding working condition;
if so, controlling the fan to operate at the current fan rotating speed gear, and controlling the compressor to operate at the gear corresponding to the initial rotating speed of the compressor;
otherwise, the fan speed gear is increased according to a preset fan stepping value within the upper limit range of the fan speed.
Further, the acquiring of the initial value of the load weight in the refrigerating chamber includes:
acquiring the self weight values of the shelf and the drawer of the refrigerating chamber;
acquiring the reading values of the refrigerating chamber shelf and the drawer corresponding to the gravity sensor;
and taking the difference value between the reading values of the refrigerating chamber shelf and the drawer corresponding to the gravity sensors and the self weight values of the refrigerating chamber shelf and the drawer as the initial value of the load weight in the refrigerating chamber.
Further, the determining the initial rotation speed of the compressor according to the initial value of the load weight includes:
presetting a corresponding relation between load weight and a rotating speed gear of the compressor;
and determining the initial speed gear of the compressor according to the initial value of the load weight and the corresponding relation between the load weight and the speed gear of the compressor.
Further, the method also comprises the following steps:
acquiring the door opening time of the air-cooled refrigerator;
judging whether the door opening time of the air-cooled refrigerator is greater than a preset door opening time threshold or not;
if so, increasing the gear of the fan to the gear corresponding to the upper limit of the fan;
otherwise, controlling the fan to run at the current fan speed gear.
Further, the duration of opening the door of the air-cooled refrigerator comprises:
the time length of the door opening at this time or the accumulated time length of the door opening for multiple times in a preset time period.
Further, after the gear of the fan speed is increased to the gear corresponding to the upper limit of the fan speed, the method further comprises the following steps:
calculating a third cooling rate after the fan runs for a preset interval time at the rotating speed of the gear corresponding to the upper limit of the rotating speed of the fan;
judging whether the third cooling rate is in a cooling rate range under a preset corresponding working condition;
if so, determining the current fan speed gear according to the door opening duration of the air-cooled refrigerator;
otherwise, the rotating speed gear of the compressor is increased within the rotating speed upper limit range of the compressor according to the preset compressor stepping value.
Further, the determining the current fan speed gear according to the door opening duration of the air-cooled refrigerator comprises:
presetting a corresponding relation between door opening duration and a compressor rotating speed gear;
and determining the initial rotating speed gear of the compressor according to the door opening duration of the air-cooled refrigerator and the corresponding relation between the door opening duration and the rotating speed gear of the compressor.
Further, after controlling the fan to operate at the current fan speed gear, the method further includes:
calculating a fourth cooling rate after the fan operates for a preset interval time at the current fan speed gear;
judging whether the fourth cooling rate is in a cooling rate range under a preset corresponding working condition;
if not, the fan speed gear is increased within the fan speed upper limit range according to the preset fan stepping value, so that the corresponding cooling rate after the fan gear is increased is within the cooling rate range under the preset corresponding working condition.
Further, the method also comprises the following steps:
and if the corresponding cooling rate after the fan gear is lifted is not in the cooling rate range under the preset corresponding working condition, the rotating speed gear of the compressor is lifted according to the preset compressor stepping value in the rotating speed upper limit range of the compressor.
In a second aspect, the present application provides an air-cooled refrigerator frequency conversion control apparatus, including:
the acquisition module is used for acquiring an initial value of the load weight in the refrigerating chamber;
the determining module is used for determining the initial rotating speed of the compressor according to the initial value of the load weight;
the judging module is used for judging whether the load capacity in the refrigerating chamber is increased or not;
and the adjusting module is used for adjusting the rotating speed of the fan and/or the rotating speed of the compressor according to the load weight change value when the load weight in the refrigerating chamber is increased.
In a third aspect, the present application provides an air-cooled refrigerator comprising:
at least one refrigerating chamber and the air-cooled refrigerator frequency conversion control device of the second aspect;
the air-cooled refrigerator frequency conversion control device is used for controlling the temperature of the at least one refrigerating chamber.
The technical scheme provided by the embodiment of the application can have the following beneficial effects:
the frequency conversion control method of the air-cooled refrigerator comprises the steps of obtaining an initial value of load weight in a refrigerating chamber, determining the initial rotating speed of a compressor according to the initial value of the load weight, and judging whether the load weight in the refrigerating chamber is increased or not; if so, the rotating speed of the fan and/or the rotating speed of the compressor are/is adjusted according to the load weight change value, the constant cooling rate of the refrigerating chamber is maintained by dynamically controlling the rotating speeds of the compressor and the fan in the refrigerator, the rotating speeds of the compressor and the fan are automatically adjusted according to the weight of food materials stored in the refrigerator, the user experience is improved, the good refrigerating effect is achieved, the initial gear value is set according to the weight of the food materials, so that the running gear of the compressor is matched with the weight of the food materials when the refrigerator starts refrigerating, and the better refrigerating and energy-saving effects are achieved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Fig. 1 is a flowchart of a frequency conversion control method for an air-cooled refrigerator according to an embodiment of the present application.
Fig. 2 is a flowchart of a frequency conversion control method for an air-cooled refrigerator according to another embodiment of the present application.
Fig. 3 is a flowchart of a frequency conversion control method for an air-cooled refrigerator according to another embodiment of the present application.
Fig. 4 is a flowchart of a frequency conversion control method for an air-cooled refrigerator according to another embodiment of the present application.
Fig. 5 is a functional structure diagram of a frequency conversion control device of an air-cooled refrigerator according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail below. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 is a flowchart of a frequency conversion control method for an air-cooled refrigerator according to an embodiment of the present application, and as shown in fig. 1, the frequency conversion control method for the air-cooled refrigerator includes:
s11: acquiring an initial value of the load weight in the refrigerating chamber;
s12: determining the initial rotating speed of the compressor according to the initial value of the load weight;
s13: judging whether the load capacity in the refrigerating chamber is increased or not;
s14: if yes, the fan speed and/or the compressor speed are/is adjusted according to the load weight change value.
The traditional air-cooled refrigerator acquires the ambient temperature through an ambient temperature sensor and controls the rotating speed of a compressor or a fan of the air-cooled refrigerator by combining with the gear set by a user. Therefore, when the refrigerator is powered on and started, the gear setting of the compressor is not reasonable, and the refrigerating effect of starting refrigeration is not matched with the total amount of food materials in the refrigerator. In addition, under the condition of the same environment temperature and without changing the set temperature gear, the rotating speed of a compressor and the rotating speed of a fan of the refrigerator can be kept unchanged, and when a user uses the refrigerator, food in the refrigerator is continuously changed, so that the user needs to manually adjust the refrigerating gear of the refrigerator in the using process to adapt to the continuous change of the total amount of the food in the refrigerator, and the manual adjustment has delay and errors, thereby affecting the refrigerating effect and the energy saving performance of the refrigerator.
In the embodiment, the frequency conversion control method of the air-cooled refrigerator comprises the steps of obtaining an initial value of load weight in a refrigerating chamber, determining the initial rotating speed of a compressor according to the initial value of the load weight, and judging whether the load weight in the refrigerating chamber is increased or not; if so, the rotating speed of the fan and/or the rotating speed of the compressor are/is adjusted according to the load weight change value, the constant cooling rate of the refrigerating chamber is maintained by dynamically controlling the rotating speeds of the compressor and the fan in the refrigerator, the rotating speeds of the compressor and the fan are automatically adjusted according to the weight of food materials stored in the refrigerator, the user experience is improved, a good refrigerating effect is achieved, the initial gear value is set according to the weight of the food materials, so that the running gears of the fan and the compressor are matched with the weight of the food materials when the refrigerator starts refrigerating, and a better energy-saving effect is achieved.
Fig. 2 is a flowchart of a frequency conversion control method for an air-cooled refrigerator according to another embodiment of the present application, and as shown in fig. 2, the frequency conversion control method for an air-cooled refrigerator includes:
s201: acquiring an initial value of the load weight in the refrigerating chamber;
in some embodiments, obtaining an initial value of the weight of the load in the refrigeration compartment comprises:
s2011: acquiring the self weight values of the shelf and the drawer of the refrigerating chamber;
s2012: acquiring the reading values of the refrigerating chamber shelf and the drawer corresponding to the gravity sensor;
s2013: and taking the difference value between the reading values of the refrigerating chamber shelf and the drawer corresponding to the gravity sensors and the self weight values of the refrigerating chamber shelf and the drawer as the initial value of the load weight in the refrigerating chamber.
S202: presetting a corresponding relation between load weight and a rotating speed gear of the compressor;
s203: and determining the initial speed gear of the compressor according to the initial value of the load weight and the corresponding relation between the load weight and the speed gear of the compressor.
S204: acquiring the machine type of the air-cooled refrigerator and the ambient temperature of the air-cooled refrigerator;
s205: and determining the upper limit of the rotating speed of the compressor and the upper limit of the rotating speed of the fan according to the type of the air-cooled refrigerator and the ambient temperature.
S206: judging whether the load capacity in the refrigerating chamber is increased or not;
s207: if so, increasing the gear of the fan to the gear corresponding to the upper limit of the fan;
s208: calculating a first cooling rate of the fan after the fan runs for a preset interval time at the rotating speed of the gear corresponding to the upper limit of the rotating speed of the fan;
s209: judging whether the first cooling rate is in a cooling rate range under a preset corresponding working condition;
s210: if so, determining the current fan rotating speed gear according to the current load weight;
in some embodiments, after determining the current fan speed gear according to the current load weight, the method further includes:
s2101: calculating a second cooling rate after the fan operates at the current fan speed gear for a preset interval time;
s2102: judging whether the second cooling rate is in a cooling rate range under a preset corresponding working condition;
s2103: if so, controlling the fan to operate at the current fan rotating speed gear, and controlling the compressor to operate at the initial rotating speed of the compressor corresponding to the gear;
s2104: otherwise, the fan speed gear is increased according to the preset fan stepping value within the upper limit range of the fan speed.
The cooling rate can be increased by increasing the gear of the rotating speed of the fan, so that the cooling rate is in the range of the cooling rate under the preset corresponding working condition.
S211: otherwise, the rotating speed gear of the compressor is increased according to the preset compressor stepping value within the rotating speed upper limit range of the compressor.
When the rotating speed of the fan is increased to the upper limit of the rotating speed of the fan, the cooling rate can be increased by increasing the gear of the rotating speed of the compressor, so that the cooling rate is in the range of the cooling rate under the preset corresponding working condition.
It should be noted that the preset fan step value and the preset compressor step value may be determined according to an actual usage scenario, for example, the fan gear is totally divided into 5 gears, and each gear is lifted one time.
In the related art, the variable frequency control of the air-cooled refrigerator maintains the temperature in the refrigerating chamber to be constant by independently controlling the compressor or the fan, but the method for independently controlling the compressor or the fan can generate the unbalanced condition that the running rotating speed of the compressor is higher and the rotating speed of the fan is lower or the running rotating speed of the fan is higher and the running rotating speed of the compressor is lower, thereby not only increasing the noise of the refrigerator, but also being not enough to save energy.
In the embodiment, by the control method of combining the fan and the compressor, compared with the independent control of the fan or the compressor, the whole noise of the refrigerator is reduced and the energy-saving effect is achieved in the long-term operation process.
Fig. 3 is a flowchart of a frequency conversion control method for an air-cooled refrigerator according to another embodiment of the present application, and as shown in fig. 3, the frequency conversion control method for an air-cooled refrigerator includes:
s31: acquiring the door opening time of the air-cooled refrigerator;
some embodiments of the air-cooled refrigerator include: the time length of the door opening at this time or the accumulated time length of the door opening for multiple times in a preset time period.
S32: judging whether the door opening time of the air-cooled refrigerator is greater than a preset door opening time threshold or not;
s33: if so, increasing the gear of the fan to the gear corresponding to the upper limit of the fan;
in some embodiments, after increasing the speed of the fan to the speed corresponding to the upper limit of the speed of the fan, the method further includes:
s331: calculating a third cooling rate after the fan runs for a preset interval time at the rotating speed of the gear corresponding to the upper limit of the rotating speed of the fan;
s332: judging whether the third cooling rate is in a cooling rate range under a preset corresponding working condition;
s333: if so, determining the current fan speed gear according to the door opening duration of the air-cooled refrigerator;
in some embodiments, determining the current fan speed gear according to the door opening duration of the air-cooled refrigerator includes:
s3331: presetting a corresponding relation between door opening duration and a compressor rotating speed gear;
s3332: and determining the initial rotating speed gear of the compressor according to the door opening duration of the air-cooled refrigerator and the corresponding relation between the door opening duration and the rotating speed gear of the compressor.
S334: otherwise, the rotating speed gear of the compressor is increased according to the preset compressor stepping value within the rotating speed upper limit range of the compressor.
S34: otherwise, controlling the fan to run at the current fan speed gear.
In some embodiments, after controlling the fan to operate at the current fan speed gear, the method further includes:
s341: calculating a fourth cooling rate after the fan operates for a preset interval time at the current fan speed gear;
s342: judging whether the fourth cooling rate is in a cooling rate range under a preset corresponding working condition;
s343: if not, the fan speed gear is increased within the upper limit range of the fan speed according to the preset fan stepping value, so that the corresponding cooling rate after the fan gear is increased is within the cooling rate range under the preset corresponding working condition.
S344: and if the corresponding cooling rate after the fan gear is lifted is not in the cooling rate range under the preset corresponding working condition, the rotating speed gear of the compressor is lifted according to the preset compressor stepping value in the rotating speed upper limit range of the compressor.
In this embodiment, combine the switch door time to control compressor and fan, realize that cooling rate is invariable, promoted user experience.
As shown in fig. 4, the frequency conversion control method of the air-cooled refrigerator specifically includes:
according to the difference between the environmental temperature and the set gear of the compartment, the corresponding preset cooling rate is preset in the control program; according to the difference value between the value of the gravity sensor and the weight of the shelves and the drawer inside the refrigerator, a preset compression rotating speed i gear and a preset fan rotating speed j gear are arranged inside the control program.
Firstly, acquiring the current environment and the refrigerator type, and determining the highest rotating speed and the lowest rotating speed of the current compressor and the upper and lower rotating speed limits of the fan under the working condition; and then obtaining the values of the gravity sensor of the refrigerating chamber and the gravity sensor, the self-weight difference value of the shelf and the drawer of the refrigerating chamber, and determining the initial rotating speed i of the compressor under the working condition.
When the refrigerator is started, the rotating speed of a fan of the refrigerator is increased to the highest rotating speed, and the rotating speed of a compressor keeps the i gear; after the time interval T, judging whether the current cooling rate is greater than the cooling rate preset by a program under the working condition; if the current cooling rate is greater than the cooling rate preset by a program under the working condition, adjusting the rotating speed of the fan to a preset value j, judging whether the current cooling rate is within a preset cooling range after a time interval T, if not, increasing the rotating speed of the fan to a j +1 gear, and judging whether the current cooling rate is within the preset cooling range again after the time interval T; if the fan speed is in the range, the fan speed is determined to be in the j gear, and the compressor gear is determined to be in the i gear. If the current cooling rate is less than the preset cooling rate, firstly judging whether a speed gear i of the compressor is greater than or equal to the upper limit of the current speed of the compressor, if so, proving that the compressor and the fan reach the highest speed in the current state, and sending an alarm; and if not, increasing the gear of the press to the i +1 gear, and judging whether the current cooling rate is greater than the preset cooling rate after T time.
When a refrigeration door of the refrigerator is opened, recording the time length of opening the door at this time and the accumulated time length of opening the door for multiple times in a short time, and acquiring the current compressor rotating speed i and the current fan rotating speed j; judging whether the value of the gravity sensor in the refrigerating chamber is increased or not, if so, indicating that a user puts new food into the refrigerator, wherein the rotating speed of a fan of the refrigerator is increased to the highest rotating speed in the current state, and the rotating speed of a compressor keeps the i gear; after the time interval T, judging whether the current cooling rate is greater than the cooling rate preset by a program under the working condition; if the current cooling rate is greater than the cooling rate preset by a program under the working condition, adjusting the rotating speed of the fan to a preset value j, judging whether the current cooling rate is within a preset cooling range after a time interval T, if not, increasing the rotating speed of the fan to a j +1 gear, and judging whether the current cooling rate is within the preset cooling range again after the time interval T; if the fan speed is in the range, the fan speed is determined to be in the j gear, and the compressor gear is determined to be in the i gear. If the current cooling rate is less than the preset cooling rate, firstly judging whether a speed gear i of the compressor is greater than or equal to the upper limit of the current speed of the compressor, if so, proving that the compressor and the fan reach the highest speed in the current state, and sending an alarm; and if not, increasing the gear of the press to the i +1 gear, and judging whether the current cooling rate is greater than the preset cooling rate after T time. If not, the weight of the food stored in the refrigerating chamber is not changed or reduced. Judging whether the opening time of the refrigerating chamber and the accumulated time of multiple door opening in a short time are less than or equal to the preset opening time again, and if the opening time is greater than the preset opening time, executing the same control program as that of the refrigerating gravity sensor when the numerical value is increased; if the preset starting time is shorter than the preset starting time, the fan operates at the current rotating speed j, and the press maintains the original state; judging whether the current cooling rate is in a preset cooling range after T periods of time, and recording the fan rotating speed j and the compressor rotating speed i at the moment if the current cooling rate is in the preset cooling range; otherwise, determining that the rotating speed of the fan does not reach the upper limit value and increasing the rotating speed of the fan; continuing to increase the rotating speed of the fan if the rotating speed does not reach the highest rotating speed, and starting the compressor and maintaining the rotating speed of the compressor at the i gear if the rotating speed reaches the highest rotating speed; judging whether the current cooling rate is in a preset cooling range after T periods of time, and recording the fan rotating speed j and the compressor rotating speed i at the moment if the current cooling rate is in the preset cooling range; otherwise, the rotating speed of the compressor is increased by one gear, whether the rotating speed of the compressor reaches the upper limit of the rotating speed is judged, i and j are recorded and the program is finished if the rotating speed of the compressor reaches the upper limit of the rotating speed, whether the current cooling rate is larger than the preset cooling rate after T time is judged if the current cooling rate is not larger than the preset cooling rate, otherwise, i + +, the rotating speed of the fan is adjusted back to the preset value of j gear, whether the current cooling rate is in the preset cooling range is judged after T time, and if the current cooling rate is not larger than the preset cooling range, j + +, the current compressor gear i and the fan rotating speed gear j are recorded.
In this embodiment, through the control to inverter compressor and inverter fan, combine the switch door time, realize the dynamic control of cooling rate, promote power user experience.
The embodiment of the invention provides a frequency conversion control device of an air-cooled refrigerator, which comprises the following functional structural diagrams shown in figure 5:
an obtaining module 51, configured to obtain an initial value of a load weight in the refrigerating compartment;
the determining module 52 is used for determining the initial rotating speed of the compressor according to the initial value of the load weight;
a judging module 53, configured to judge whether a load in the refrigerating chamber increases;
and an adjusting module 54 for adjusting the fan speed and/or the compressor speed according to the load weight variation value when the load weight in the refrigerating chamber increases.
In some embodiments, the acquisition module 51 is configured to:
acquiring the self weight values of the shelf and the drawer of the refrigerating chamber;
acquiring the reading values of the refrigerating chamber shelf and the drawer corresponding to the gravity sensor;
and taking the difference value between the reading values of the refrigerating chamber shelf and the drawer corresponding to the gravity sensors and the self weight values of the refrigerating chamber shelf and the drawer as the initial value of the load weight in the refrigerating chamber.
In some embodiments, the determination module 52 is configured to:
presetting a corresponding relation between load weight and a rotating speed gear of the compressor;
and determining the initial speed gear of the compressor according to the initial value of the load weight and the corresponding relation between the load weight and the speed gear of the compressor.
In some embodiments, the adjustment module 54 is configured to:
acquiring the machine type of the air-cooled refrigerator and the ambient temperature of the air-cooled refrigerator;
and determining the upper limit of the rotating speed of the compressor and the upper limit of the rotating speed of the fan according to the type of the air-cooled refrigerator and the ambient temperature.
Adjusting the fan speed and/or the compressor speed according to the load weight change value, comprising:
increasing the gear of the rotating speed of the fan to the gear corresponding to the upper limit of the rotating speed of the fan;
calculating a first cooling rate of the fan after the fan runs for a preset interval time at the rotating speed of the gear corresponding to the upper limit of the rotating speed of the fan;
judging whether the first cooling rate is in a cooling rate range under a preset corresponding working condition;
if so, determining the current fan rotating speed gear according to the current load weight;
otherwise, the rotating speed gear of the compressor is increased according to the preset compressor stepping value within the rotating speed upper limit range of the compressor.
After confirming current fan rotational speed gear according to current load weight, still include:
calculating a second cooling rate after the fan operates at the current fan speed gear for a preset interval time;
judging whether the second cooling rate is in a cooling rate range under a preset corresponding working condition;
if so, controlling the fan to operate at the current fan rotating speed gear, and controlling the compressor to operate at the initial rotating speed of the compressor corresponding to the gear;
otherwise, the fan speed gear is increased according to the preset fan stepping value within the upper limit range of the fan speed.
In some embodiments, the adjustment module 54 is further configured to:
acquiring the door opening time of the air-cooled refrigerator;
judging whether the door opening time of the air-cooled refrigerator is greater than a preset door opening time threshold or not;
if so, increasing the gear of the fan to the gear corresponding to the upper limit of the fan;
otherwise, controlling the fan to run at the current fan speed gear.
The time of opening the door of the air-cooled refrigerator comprises:
the time length of the door opening at this time or the accumulated time length of the door opening for multiple times in a preset time period.
Further, after the gear of the fan speed is increased to the gear corresponding to the upper limit of the fan speed, the method further comprises the following steps:
calculating a third cooling rate after the fan runs for a preset interval time at the rotating speed of the gear corresponding to the upper limit of the rotating speed of the fan;
judging whether the third cooling rate is in a cooling rate range under a preset corresponding working condition;
if so, determining the current fan speed gear according to the door opening duration of the air-cooled refrigerator;
otherwise, the rotating speed gear of the compressor is increased according to the preset compressor stepping value within the rotating speed upper limit range of the compressor.
Determining the current fan speed gear according to the door opening duration of the air-cooled refrigerator, comprising the following steps of:
presetting a corresponding relation between door opening duration and a compressor rotating speed gear;
and determining the initial rotating speed gear of the compressor according to the door opening duration of the air-cooled refrigerator and the corresponding relation between the door opening duration and the rotating speed gear of the compressor.
Further, after controlling the fan to operate at the current fan speed gear, the method further includes:
calculating a fourth cooling rate after the fan operates for a preset interval time at the current fan speed gear;
judging whether the fourth cooling rate is in a cooling rate range under a preset corresponding working condition;
if not, the fan speed gear is increased within the upper limit range of the fan speed according to the preset fan stepping value, so that the corresponding cooling rate after the fan gear is increased is within the cooling rate range under the preset corresponding working condition.
And if the corresponding cooling rate after the fan gear is lifted is not in the cooling rate range under the preset corresponding working condition, the rotating speed gear of the compressor is lifted according to the preset compressor stepping value in the rotating speed upper limit range of the compressor.
In this embodiment, an initial value of the load capacity in the refrigerating chamber is obtained through the obtaining module, the determining module determines the initial rotation speed of the compressor according to the initial value of the load capacity, and the judging module judges whether the load capacity in the refrigerating chamber is increased. When adjusting module load weight increases in the walk-in, adjust fan rotational speed and/or compressor rotational speed according to load weight variation value, the rotational speed through compressor and fan in the dynamic control refrigerator maintains the invariant of walk-in cooling rate, deposit the rotational speed of eating material weight automatic adjustment compressor and fan in the refrigerator according to, promote user experience, reach fine refrigeration effect, and, initial gear value sets up according to eating material weight, so that compressor operation gear matches with eating material weight when the refrigerator starts refrigeration, reach better refrigeration and energy-conserving effect.
The embodiment of the invention provides an air-cooled refrigerator, which comprises:
at least one refrigerating chamber and the frequency conversion control device of the air-cooled refrigerator in the embodiment;
the air-cooled refrigerator frequency conversion control device is used for controlling the temperature of at least one refrigerating chamber.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present application, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
It should be noted that the present invention is not limited to the above-mentioned preferred embodiments, and those skilled in the art can obtain other products in various forms without departing from the spirit of the present invention, but any changes in shape or structure can be made within the scope of the present invention with the same or similar technical solutions as those of the present invention.
Claims (14)
1. A frequency conversion control method for an air-cooled refrigerator is characterized by comprising the following steps:
acquiring an initial value of the load weight in the refrigerating chamber;
determining the initial rotating speed of the compressor according to the initial value of the load weight;
judging whether the load capacity in the refrigerating chamber is increased or not;
if yes, adjusting the fan rotating speed and/or the compressor rotating speed according to the load weight change value.
2. The frequency conversion control method of the air-cooled refrigerator according to claim 1, further comprising:
acquiring the machine type of the air-cooled refrigerator and the ambient temperature of the air-cooled refrigerator;
and determining the upper limit of the rotating speed of the compressor and the upper limit of the rotating speed of the fan according to the type of the air-cooled refrigerator and the ambient temperature.
3. The frequency conversion control method of the air-cooled refrigerator according to claim 2, wherein the adjusting of the fan speed and/or the compressor speed according to the load weight variation value comprises:
increasing the rotating speed gear of the fan to the gear corresponding to the upper rotating speed limit of the fan;
calculating a first cooling rate of the fan after the fan runs for a preset interval time at a rotating speed corresponding to a gear rotating speed at the upper limit of the rotating speed of the fan;
judging whether the first cooling rate is in a cooling rate range under a preset corresponding working condition;
if so, determining the current fan rotating speed gear according to the current load weight;
otherwise, the rotating speed gear of the compressor is increased within the rotating speed upper limit range of the compressor according to the preset compressor stepping value.
4. The frequency conversion control method of the air-cooled refrigerator according to claim 3, wherein after determining the current fan speed gear according to the current load weight, the method further comprises the following steps:
calculating a second cooling rate after the fan operates at the current fan speed gear for a preset interval time;
judging whether the second cooling rate is in a cooling rate range under a preset corresponding working condition;
if so, controlling the fan to operate at the current fan rotating speed gear, and controlling the compressor to operate at the gear corresponding to the initial rotating speed of the compressor;
otherwise, the fan speed gear is increased according to a preset fan stepping value within the upper limit range of the fan speed.
5. The frequency conversion control method of the air-cooled refrigerator according to claim 1, wherein the obtaining of the initial value of the load weight in the refrigerating chamber comprises:
acquiring the self weight values of the shelf and the drawer of the refrigerating chamber;
acquiring the reading values of the refrigerating chamber shelf and the drawer corresponding to the gravity sensor;
and taking the difference value between the reading values of the refrigerating chamber shelf and the drawer corresponding to the gravity sensors and the self weight values of the refrigerating chamber shelf and the drawer as the initial value of the load weight in the refrigerating chamber.
6. The frequency conversion control method of the air-cooled refrigerator as claimed in claim 1 or 5, wherein the determining of the initial rotation speed of the compressor according to the initial value of the load weight comprises:
presetting a corresponding relation between load weight and a rotating speed gear of the compressor;
and determining the initial speed gear of the compressor according to the initial value of the load weight and the corresponding relation between the load weight and the speed gear of the compressor.
7. The frequency conversion control method of the air-cooled refrigerator according to claim 1, further comprising:
acquiring the door opening time of the air-cooled refrigerator;
judging whether the door opening time of the air-cooled refrigerator is greater than a preset door opening time threshold or not;
if so, increasing the gear of the fan to the gear corresponding to the upper limit of the fan;
otherwise, controlling the fan to run at the current fan speed gear.
8. The frequency conversion control method of the air-cooled refrigerator according to claim 7, wherein the time period for opening the door of the air-cooled refrigerator comprises the following steps:
the time length of the door opening at this time or the accumulated time length of the door opening for multiple times in a preset time period.
9. The frequency conversion control method of the air-cooled refrigerator according to claim 7, wherein after the gear of the fan speed is increased to the gear corresponding to the upper limit of the fan speed, the method further comprises the following steps:
calculating a third cooling rate after the fan runs for a preset interval time at the rotating speed of the gear corresponding to the upper limit of the rotating speed of the fan;
judging whether the third cooling rate is in a cooling rate range under a preset corresponding working condition;
if so, determining the current fan speed gear according to the door opening duration of the air-cooled refrigerator;
otherwise, the rotating speed gear of the compressor is increased within the rotating speed upper limit range of the compressor according to the preset compressor stepping value.
10. The frequency conversion control method of the air-cooled refrigerator according to claim 9, wherein the determining the current fan speed gear according to the door opening duration of the air-cooled refrigerator comprises:
presetting a corresponding relation between door opening duration and a compressor rotating speed gear;
and determining the initial rotating speed gear of the compressor according to the door opening duration of the air-cooled refrigerator and the corresponding relation between the door opening duration and the rotating speed gear of the compressor.
11. The frequency conversion control method for the air-cooled refrigerator according to claim 7, after controlling the fan to operate at the current fan speed gear, further comprising:
calculating a fourth cooling rate after the fan operates for a preset interval time at the current fan speed gear;
judging whether the fourth cooling rate is in a cooling rate range under a preset corresponding working condition;
if not, the fan speed gear is increased within the fan speed upper limit range according to the preset fan stepping value, so that the corresponding cooling rate after the fan gear is increased is within the cooling rate range under the preset corresponding working condition.
12. The frequency conversion control method of the air-cooled refrigerator according to claim 11, further comprising:
and if the corresponding cooling rate after the fan gear is lifted is not in the cooling rate range under the preset corresponding working condition, the rotating speed gear of the compressor is lifted according to the preset compressor stepping value in the rotating speed upper limit range of the compressor.
13. The utility model provides an air-cooled refrigerator frequency conversion controlling means which characterized in that includes:
the acquisition module is used for acquiring an initial value of the load weight in the refrigerating chamber;
the determining module is used for determining the initial rotating speed of the compressor according to the initial value of the load weight;
the judging module is used for judging whether the load capacity in the refrigerating chamber is increased or not;
and the adjusting module is used for adjusting the rotating speed of the fan and/or the rotating speed of the compressor according to the load weight change value when the load weight in the refrigerating chamber is increased.
14. An air-cooled refrigerator, comprising:
at least one refrigerating compartment and the air-cooled refrigerator inverter control of claim 13;
the air-cooled refrigerator frequency conversion control device is used for controlling the temperature of the at least one refrigerating chamber.
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| CN113883820B (en) | 2022-06-24 |
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