CN111351305B - Control method and control device for refrigerator, refrigerator and storage medium - Google Patents
Control method and control device for refrigerator, refrigerator and storage medium Download PDFInfo
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- CN111351305B CN111351305B CN202010157352.3A CN202010157352A CN111351305B CN 111351305 B CN111351305 B CN 111351305B CN 202010157352 A CN202010157352 A CN 202010157352A CN 111351305 B CN111351305 B CN 111351305B
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- refrigerator
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- defrosting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/002—Defroster control
- F25D21/004—Control mechanisms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/04—Preventing the formation of frost or condensate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/02—Timing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
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- 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
- F25D2700/14—Sensors measuring the temperature outside the refrigerator or freezer
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Defrosting Systems (AREA)
Abstract
The invention relates to the field of refrigerator control, and discloses a control method and a control device for a refrigerator, the refrigerator and a storage medium. Through after the refrigerator defrosting, the motor of the fan for generating the refrigerating airflow is controlled to be started for multiple times to generate a 'inching' effect, so that water drops on fan blades of the fan shake off completely, an air door is prevented from being thrown off by the water drops when the fan runs at a high speed again during the next refrigerating, and the refrigerating effect of the refrigerator is finally influenced due to the fact that the air door is frozen to cause the operation failure of the air door. Thereby improving the operational reliability of the refrigerator.
Description
Technical Field
The invention relates to the field of refrigerator control, in particular to a control method and a control device for a refrigerator, the refrigerator and a storage medium.
Background
The existing single system refrigerator, namely a refrigerator with a direct cooling or air direct cooling structure, is characterized in that an air door is arranged at an air supply outlet of a refrigerating chamber of the refrigerator, a fan is arranged at a position close to the air door and an evaporator, when a compressor operates for refrigeration, the fan operates and conveys cold air to the refrigerating chamber through the air door to refrigerate the refrigerating chamber, and the refrigerating capacity of the refrigerating chamber is adjusted by controlling the size of the air door. In the defrosting process of the evaporator of the refrigerator, condensed water drops are formed on fan blades of the fan due to the rising of wet steam formed after the evaporator is heated. The fan operation when the refrigerator refrigerates, the drop of water is by the fast-speed air door department of including throwing away all around to fan place cavity for cavity perisporium and air door freeze by freezing easily, for solving this problem, generally set up the heater strip in air door department and heat and prevent freezing, and this scheme leads to the water that melts after the cost-push and the heating can not discharge, still has the risk of freezing next time.
Disclosure of Invention
The invention aims to overcome the problem that a throttle of a refrigerator is frozen due to defrosting in the refrigerator in the prior art, and provides a control method and a control device for the refrigerator, the refrigerator and a storage medium.
In order to achieve the above object, in a first aspect of the present invention, there is provided a control method for a refrigerator, the refrigerator including a cooling compartment, a damper provided at a supply outlet of the cooling compartment, and a fan for generating an air flow to cool the cooling compartment through the damper, the control method comprising:
determining that the refrigerator finishes a defrosting process;
and controlling the motor of the fan to start for multiple times before the next time of refrigeration of the refrigerator.
Optionally, controlling the multiple start of the motor of the fan comprises:
supplying power to the motor for a first preset time;
powering off the motor for a second preset time;
wherein the first preset time is less than the second preset time.
Optionally, the first preset time is in a range of 0.1 seconds to 3 seconds, and the second preset time is in a range of 1 second to 30 seconds.
Optionally, the control method further includes:
acquiring defrosting time of the refrigerator;
and determining the starting times of the motor according to the defrosting time.
Optionally, the control method further includes:
acquiring the accumulated running time of a compressor of the refrigerator;
determining the number of starts of the motor according to the defrosting time includes: and determining the starting times according to the defrosting time and the accumulated running time.
Optionally, the control method further includes: acquiring the temperature and the humidity of the environment where the refrigerator is located;
determining the number of starts of the motor according to the defrosting time includes: and determining the starting times according to defrosting time, temperature and humidity.
Optionally, determining the number of activations is based on the following formula:
N＝a*TE1+b*RH1+c*t1+d*t2
wherein N is the starting times of the motor, TE1 is the temperature, RH1 is the humidity, t1 is the accumulated running time of the compressor, t2 is the defrosting time, and a, b, c and d are respectively calculation coefficients.
In order to achieve the above object, according to a second aspect of the present invention, there is provided a control apparatus for a refrigerator including a refrigerating compartment, a damper provided at a supply outlet of the refrigerating compartment, and a fan for generating an air flow to cool a refrigerating compartment through the damper, the control apparatus comprising:
a motor for driving the fan to operate;
a processor configured to:
determining that the refrigerator finishes a defrosting process; motor for controlling fan before next refrigerator refrigerates
And starting for multiple times.
Optionally, the processor is further configured to:
supplying power to the motor for a first preset time;
powering off the motor for a second preset time;
wherein the first preset time is less than the second preset time.
Optionally, the first preset time is in a range of 0.1 seconds to 3 seconds, and the second preset time is in a range of 1 second to 30 seconds.
Optionally, the processor is further configured to:
acquiring defrosting time of the refrigerator;
and determining the starting times of the motor according to the defrosting time.
Optionally, the processor is further configured to:
acquiring the accumulated running time of a compressor of the refrigerator;
and determining the starting times according to the defrosting time and the accumulated running time.
Optionally, the control device further comprises:
the temperature sensor is used for detecting the temperature of the environment where the refrigerator is located;
the humidity sensor is used for detecting the humidity of the environment where the refrigerator is located;
the processor is further configured to:
acquiring temperature and humidity from a temperature sensor and a humidity sensor; and determining the starting times according to defrosting time, temperature and humidity.
In order to achieve the above object, according to a third aspect of the present invention, there is provided a refrigerator including the control apparatus for a refrigerator described above.
In order to achieve the above object, a fourth aspect of the present invention provides a machine-readable storage medium, characterized in that the machine-readable storage medium has stored thereon computer-readable instructions for enabling a processor to execute the above control method for a refrigerator when the computer-readable instructions are executed by the processor.
According to the control method for the refrigerator, after defrosting of the refrigerator is finished, the motor of the fan used for generating refrigerating airflow is controlled to be started for multiple times to generate a 'inching' effect, so that water drops on fan blades of the fan can be shaken off completely, the situation that when refrigerating is carried out again, no water drops are thrown off the air door when the fan runs at a high speed is avoided, and the situation that the refrigerator is influenced due to the fact that the air door is frozen and the operation fault of the air door is finally caused is avoided. Thereby improving the operational reliability of the refrigerator.
Drawings
Fig. 1 is a schematic sectional view showing an air-cooled refrigerator according to an embodiment of the present invention;
fig. 2 schematically shows a flowchart of a control method for a refrigerator according to an embodiment of the present invention;
fig. 3 schematically shows a block diagram of a control apparatus for a refrigerator according to an embodiment of the present invention;
fig. 4 schematically shows a block diagram of a control apparatus for a refrigerator in accordance with a preferred embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between the various embodiments can be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not be within the protection scope of the present invention.
The embodiment of the invention provides a control method for a refrigerator. The refrigerator is preferably a single-system refrigeration air-cooled refrigerator, and a schematic sectional structural diagram of the air-cooled refrigerator is shown in fig. 1. As shown in fig. 1, the refrigerator 100 includes a door 101, a plurality of refrigerating compartments such as a refrigerating compartment 102 and a freezing compartment 104, and may further include a variable-temperature ice compartment 103, one or more shelves 107 for placing food are arranged in the compartments, a refrigeration system mainly formed by connecting an evaporator 106, a condenser (not shown), a refrigerant pipeline (not shown) and a compressor (not shown) is arranged in the refrigerator, a refrigeration air duct (not shown) communicated with the compartments is arranged, a fan (not shown) is provided in a chamber where the evaporator 106 is installed, a cooling air flow is formed when the fan is operated, and a damper 105 is provided at an air supply port of a cooling compartment such as a refrigerating compartment connected to a cooling air passage, the opening and closing of the damper 105 is used to deliver a flow of refrigerated air to the refrigerated compartment to refrigerate the latter.
Fig. 2 schematically shows a flowchart of a control method for a refrigerator according to an embodiment of the present invention, and referring to fig. 2, the control method for a refrigerator according to an embodiment of the present invention includes:
step S100: determining that the refrigerator finishes a defrosting process;
step S200: and controlling a motor of the fan to continuously start and run before the next time of refrigeration of the refrigerator.
The refrigerator is at the course of the work, for preventing that the temperature of evaporimeter influences the heat transfer effect because long-time operating temperature is crossed the frosting, can regularly carry out defrosting control to the evaporimeter, generally through the heater work of control setting at the evaporimeter to the evaporimeter heating for frosting on the evaporimeter melts into water and realizes the defrosting. Because the evaporimeter sets up the issue of fan and air door in the refrigeration wind channel, when the defrosting action, the frost thawing process can form wet steam and rise, meets the flabellum that cold fan arrived and can condense into the drop of water to this adheres to on the flabellum. After the refrigerator defrosting is finished and the refrigerator is cooled, the high-speed rotation of the fan can throw water drops to the periphery of a cavity where the fan is located, including on the air door, because the air door has a horizontal plane or an installation approximate to the horizontal plane, the water drops can not flow on the air door, when the refrigerator continuously cools, because the cold air of continuous cold air passes through the air door, the water drops are frozen to make the air door, so that the water drops are frozen to block the opening and closing of the air door, even the air door is completely frozen to be incapable of rotating, and the normal refrigeration control can not be realized.
In order to solve the problem, after the refrigerator is controlled to be defrosted, the motor of the fan is controlled to be continuously started before the next refrigerator performs refrigeration, the fan has a 'inching' effect during operation, namely the motor is electrified and then powered off in a short time of starting, then the motor runs by means of inertia, and then is electrified after a certain time delay, and the operation is circulated. Because the time of the motor is short, the torque acting on the fan is short, so that a shaking effect is formed, water drops on the fan blades are shaken off instead of being thrown around, and the fallen water drops flow to the water outlet through the lower refrigerating air duct and are finally discharged. Through the continuous starting work for a certain time, water drops on the fan blade can be shaken off completely, so that the water drops on the fan blade can be completely removed.
Further, for realizing the "inching" effect of fan operation to make the drop of water on the flabellum shake off rather than get rid of around, when the motor of control fan started many times, specifically included:
step S210: supplying power to the motor for a first preset time;
step S220: powering off the motor for a second preset time;
wherein the first preset time is less than the second preset time.
The power supply and the power cut-off can be performed on an alternating current motor or a direct current motor, for the alternating current motor, the motor is controlled to run when the alternating current motor is powered on, and the motor does not run and continues to decelerate depending on inertia when the alternating current motor is powered off; for the direct current motor, because the driving motor operates by depending on the inverter and a processor for controlling the operation of the inverter, the power-on and power-off can be understood as that the processor controls the inverter to supply power and disconnect power to the winding of the motor, and sine-changed current is formed on the winding when the inverter supplies power to the winding, so that a rotating magnetic field is formed on the rotor of the motor, and the rotor of the motor is driven to continuously operate; when the processor controls the inverter to be out of operation, the switching tube of the inverter is closed, the rotating magnetic field loaded on the rotor disappears, and the fan blades and the rotor continue to run at a reduced speed depending on inertia. The motor is powered for a first preset time which is less than a second preset time for powering off the motor, so that the motor runs to form a 'inching' effect.
Further, the first preset time may be set to 0.1 to 3 seconds, and the second preset time may be set to 1 to 30 seconds, so as to ensure the effect of the "click" effect. If first preset time can set up to 0.5 second, the second preset time can set up to 5 seconds, make like this to the motor circular telegram 0.5 second, continuous operation a period such as 1 minute is continuous under the 5 seconds's of the starting mode of outage 4 times promptly to make the continuous shake-off of drop on the flabellum clean, thereby drop on the flabellum has already been clear away when the refrigerator refrigerates next time, thereby can not get rid of the drop of water and lead to the air door to be stained with the drop of water and freeze because of the high-speed operation during refrigeration all around, thereby it can not normally operate to lead to the air door to influence the refrigeration effect of refrigerator with this.
According to the control method for the refrigerator, provided by the embodiment of the invention, after the defrosting of the refrigerator is finished, the motor of the fan for generating the refrigerating airflow is controlled to be started for multiple times to generate the 'inching' effect, so that water drops on fan blades of the fan are shaken off completely, the situation that no water drops are thrown off to the air door when the fan runs at a high speed in the next refrigerating process is prevented, and the situation that the refrigerating effect of the refrigerator is finally influenced due to the running fault caused by the freezing of the air door is prevented. Thereby improving the operational reliability of the refrigerator.
When the refrigerator detects that the frosting degree on the evaporator is different and the time for controlling defrosting is different, the amount of water drops condensed on fan blades of the fan by wet steam generated in the defrosting process is different, so that when the fan is controlled to be started for multiple times, the starting times of the fan are different so that the water drops can be shaken off more cleanly every time. In a preferred embodiment of the present invention, the control method further includes:
step S300: acquiring defrosting time of the refrigerator;
step S400: and determining the starting times of the motor according to the defrosting time.
In the embodiment, the starting times of the motor are determined according to the defrosting time of the refrigerator, and if the defrosting time is long, the starting times are required to be more because the wet steam is more to cause more water drops condensed on the fan blades, so that the water drops are shaken off and cleaned. Namely, the defrosting time and the starting times of the motor are in a positive relation.
The compressor is turned on when the refrigerator is refrigerating, and if the long time of the compressor is turned on indicates that the refrigerating time is long, the evaporator is frosted and condensed water drops on the fan blades are increased indirectly, and therefore, in a preferred embodiment of the present invention, the factor of increasing the running time of the compressor is further included in the determining of the number of times of the motor starting:
step S500: acquiring the accumulated running time of a compressor of the refrigerator;
step S600: and determining the starting times according to the defrosting time and the accumulated running time.
The defrosting time and the accumulated running time of the compressor are considered at the same time, so that the determined starting times of the motor are more accurate, and the water drops are shaken off more cleanly.
When the external environments of the refrigerator are different, specifically, the environment temperature and the humidity are different, the refrigerating operation time of the refrigerator is influenced, if the external environment temperature is higher, the refrigerating chamber needs to reach the set temperature, more refrigerating capacity is needed to cool the refrigerating chamber to the set temperature, and therefore the longer the operation time of the compressor is, the more condensed water drops on the fan blades are indirectly caused; when the humidity of the external environment is higher, the humidity in the refrigerator is also increased, so that the fan blades are easier to condense water drops. Therefore, in a preferred embodiment of the present invention, the determining the number of times of starting the motor further comprises:
step S700: acquiring the temperature and the humidity of the environment where the refrigerator is located;
step S800: and determining the starting times according to defrosting time, temperature and humidity.
The starting times are determined by adding parameters of the temperature and the humidity of the environment, so that the starting times are determined more accurately.
It should be noted that the above parameters, the cumulative operating time of the compressor, the temperature and humidity of the environment, may be combined with the defrosting time alone, or may be combined with the defrosting time together to determine the number of starts.
When the starting times are determined jointly with the defrosting time, the starting times can be determined by querying a multidimensional table according to the parameters or based on the following formula:
N＝a*TE1+b*RH1+c*t1+d*t2
wherein N is the starting times of the motor, TE1 is the temperature, RH1 is the humidity, t1 is the accumulated running time of the compressor, t2 is the defrosting time, a, b, c and d are respectively calculation coefficients, and the calculation coefficients can be determined through experiments.
The significance of the four parameters may be different according to experimental determination, such as the highest significance of defrosting time, the next lowest cumulative operating time of the compressor, and the lowest temperature and humidity, which can be reflected on the corresponding calculation coefficients.
Therefore, the four parameters are considered by the formula, so that the determined starting times are more accurate, and the effect of actually controlling the shaking off of the water drops is better.
The embodiment of the invention also provides a control device for the refrigerator. The refrigerator is preferably a single-system refrigeration air-cooled refrigerator, the refrigerator comprises a plurality of refrigeration compartments such as a refrigerating chamber and a freezing chamber and can also comprise a temperature-changing compartment, a refrigeration system which is mainly formed by connecting an evaporator, a condenser, a refrigerant pipeline and a compressor is also arranged in the refrigerator, a refrigeration air duct communicated with the compartments is arranged, a fan is arranged in a chamber for installing the evaporator, refrigeration air flow is formed when the fan operates, an air door is arranged at an air supply opening of the refrigeration compartment connected with the refrigeration air duct, and the refrigeration air flow is conveyed to the refrigeration compartment to refrigerate the refrigeration compartment through opening and closing of the air door.
Fig. 3 schematically shows a block diagram of a control apparatus for a refrigerator according to an embodiment of the present invention, and referring to fig. 3, the control apparatus includes:
a motor 20 for driving the fan to operate;
a processor 10 (such as the MCU in fig. 3) configured to:
determining that the refrigerator finishes a defrosting process;
the motor 20 of the blower is controlled to be started for a plurality of times before the next time of refrigeration of the refrigerator.
Examples of processor 10 may include, but are not limited to, a general purpose processor, a special purpose processor, a conventional processor, a Digital Signal Processor (DSP), a plurality of microprocessors, one or more microprocessors in association with a DSP core, a controller, a microcontroller, Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) circuits, any other type of Integrated Circuit (IC), a state machine, and the like.
The refrigerator is at the course of the work, for preventing that the temperature of evaporimeter influences the heat transfer effect because long-time operating temperature is crossed the frosting, can regularly carry out defrosting control to the evaporimeter, generally through the heater work of control setting at the evaporimeter to the evaporimeter heating for frosting on the evaporimeter melts into water and realizes the defrosting. Because the evaporimeter sets up the issue of fan and air door in the refrigeration wind channel, when the defrosting action, the frost thawing process can form wet steam and rise, meets the flabellum that cold fan arrived and can condense into the drop of water to this adheres to on the flabellum. After the refrigerator defrosting is finished and the refrigerator is cooled, the high-speed rotation of the fan can throw water drops to the periphery of a cavity where the fan is located, including on the air door, because the air door has a horizontal plane or an installation approximate to the horizontal plane, the water drops can not flow on the air door, when the refrigerator continuously cools, because the cold air of continuous cold air passes through the air door, the water drops are frozen to make the air door, so that the water drops are frozen to block the opening and closing of the air door, even the air door is completely frozen to be incapable of rotating, and the normal refrigeration control can not be realized.
To solve the problem, after the refrigerator is controlled to be defrosted, the motor 20 of the fan is controlled to be continuously started before the next refrigerator performs refrigeration, the fan has a 'inching' effect when in operation, namely the motor 20 is electrified and then powered off in a short time of starting, and then the motor 20 runs by inertia and is electrified again after a certain time delay, and the operation is circulated. Because the time of the motor 20 is short, the torque acting on the fan is short, so that a shaking effect is formed, water drops on the fan blades are shaken off instead of being thrown around, and the fallen water drops flow to the water outlet through the lower refrigerating air duct and are finally discharged. Through the continuous starting work for a certain time, water drops on the fan blade can be shaken off completely, so that the water drops on the fan blade can be completely removed.
Further, to achieve a "jog" effect of fan operation, such that the water drops on the fan blades shake off rather than throw around, when the motor 20 controlling the fan is activated multiple times, the processor 10 is further configured to: powering the motor 20 for a first preset time; de-energizing the motor 20 for a second preset time; wherein the first preset time is less than the second preset time.
Wherein, the power supply and the power cut can be for the ac motor 20 or the dc motor 20, for the ac motor 20, the power supply is performed, that is, the motor 20 is controlled to operate, and when the power cut is performed, the motor 20 does not operate and continues to decelerate depending on inertia; in the case of the direct current motor 20, since the operation of the driving motor 20 depends on the inverter and the processor 10 controlling the operation of the inverter, the power on and off is understood as that the processor 10 controls the inverter to supply power to and disconnect power from the windings of the driving motor 20, and a sinusoidal current is formed on the windings when the inverter supplies power to the windings, so that a rotating magnetic field is formed on the rotor of the driving motor 20, and the rotor of the driving motor 20 is continuously operated; when the processor 10 controls the inverter to be out of operation, the switching tube of the inverter is closed, the rotating magnetic field loaded on the rotor disappears, and the fan blades and the rotor continue to run at a reduced speed depending on inertia. The "jog" effect is created by the operation of the motor 20 by powering the motor 20 for a first preset time that is less than a second preset time that powers the motor 20 off.
Further, the first preset time may be set to 0.1 to 3 seconds, and the second preset time may be set to 1 to 30 seconds, so as to ensure the effect of the "click" effect. If first preset time can set up to 0.5 second, the second preset time can set up to 5 seconds, make like this to the circular telegram 0.5 second of motor 20, continuous operation a period such as 1 minute is continuous under the 5 seconds's of the starting mode of outage 4 times promptly to make the continuous shake-off of drop on the flabellum clean, thereby drop on the flabellum has already been clear away when the refrigerator refrigerates next time, thereby can not get rid of the drop of water and lead to the air door to be stained with the drop of water and freeze because of the high-speed operation during refrigeration is got rid of the drop of water all around, thereby lead to the air door can not normally operate and influence the refrigeration effect of refrigerator with this.
According to the control device for the refrigerator, provided by the embodiment of the invention, the processor 10 controls the motor 20 of the fan for generating the refrigerating airflow to be started for multiple times after the defrosting of the refrigerator is finished so as to generate a 'inching' effect, so that water drops on fan blades of the fan are shaken off completely, the situation that no water drops are thrown to an air door when the fan runs at a high speed during the next refrigerating is prevented, and the situation that the running of the air door is failed due to the freezing of the air door is prevented, and the refrigerating effect of the refrigerator is finally influenced. Thereby improving the operational reliability of the refrigerator.
When the refrigerator detects that the frosting degree on the evaporator is different and the time for controlling defrosting is different, the amount of water drops condensed on fan blades of the fan by wet steam generated in the defrosting process is different, so that when the fan is controlled to be started for multiple times, the starting times of the fan are different so that the water drops can be shaken off more cleanly every time. In a preferred embodiment of the invention, the processor 10 is further configured to: acquiring defrosting time of the refrigerator; the number of times of starting the motor 20 is determined according to the defrosting time.
In this embodiment, the number of times of starting the motor 20 is determined according to the defrosting time of the refrigerator, and if the defrosting time is long, it means that the amount of moisture vapor causes more water drops condensed on the fan blades, and thus the number of times of starting is required to be large, thereby realizing the purpose of shaking off the water drops. I.e. the defrosting time and the number of starts of the motor 20 are in a positive relationship.
In the case where the compressor is turned on during the cooling operation of the refrigerator, and if the time period of the compressor is long, which indicates that the cooling operation time is long, the evaporator frosting will also increase, and the condensation of water drops on the fan blades will increase indirectly, and therefore, in the preferred embodiment of the present invention, the above factor for increasing the operation time of the compressor, the processor 10 is further configured to: acquiring the accumulated running time of a compressor of the refrigerator; and determining the starting times according to the defrosting time and the accumulated running time.
By simultaneously considering the defrosting time and the accumulated running time of the compressor, the determined starting times of the motor 20 are more accurate, and therefore the water drops are shaken off more cleanly.
When the external environments of the refrigerator are different, specifically, the environment temperature and the humidity are different, the refrigerating operation time of the refrigerator is influenced, if the external environment temperature is higher, the refrigerating chamber needs to reach the set temperature, more refrigerating capacity is needed to cool the refrigerating chamber to the set temperature, and therefore the longer the operation time of the compressor is, the more condensed water drops on the fan blades are indirectly caused; when the humidity of the external environment is higher, the humidity in the refrigerator is also increased, so that the fan blades are easier to condense water drops. Fig. 4 schematically shows a block diagram of a control apparatus for a refrigerator according to a preferred embodiment of the present invention, and thus in the preferred embodiment of the present invention, further adding the factors of ambient temperature and humidity, the control apparatus further includes:
a temperature sensor 30 for detecting the temperature of the environment in which the refrigerator is located;
a humidity sensor 40 for detecting the humidity of the environment in which the refrigerator is located;
in determining the number of activations of the motor 20 as described above, the processor 10 is further configured to: acquiring the temperature and the humidity of the environment where the refrigerator is located; and determining the starting times according to defrosting time, temperature and humidity.
The starting times are determined by adding parameters of the temperature and the humidity of the environment, so that the starting times are determined more accurately.
It should be noted that the above parameters, the cumulative operating time of the compressor, the temperature and humidity of the environment, may be combined with the defrosting time alone, or may be combined with the defrosting time together to determine the number of starts.
When the starting times are determined jointly with the defrosting time, the starting times can be determined by querying a multidimensional table according to the parameters or based on the following formula:
N＝a*TE1+b*RH1+c*t1+d*t2
wherein N is the number of times of starting the motor 20, TE1 is temperature, RH1 is humidity, t1 is the accumulated running time of the compressor, t2 is defrosting time, and a, b, c, and d are calculation coefficients respectively, which can be determined through experiments.
The significance of the four parameters may be different according to experimental determination, such as the highest significance of defrosting time, the next lowest cumulative operating time of the compressor, and the lowest temperature and humidity, which can be reflected on the corresponding calculation coefficients.
Therefore, the four parameters are considered by the formula, so that the determined starting times are more accurate, and the effect of actually controlling the shaking off of the water drops is better.
The invention also provides a refrigerator which comprises the control device for the refrigerator. Through after the refrigerator defrosting, the motor of the fan for generating the refrigerating airflow is controlled to be started for multiple times to generate a 'inching' effect, so that water drops on fan blades of the fan shake off completely, an air door is prevented from being thrown off by the water drops when the fan runs at a high speed again during the next refrigerating, and the refrigerating effect of the refrigerator is finally influenced due to the fact that the air door is frozen to cause the operation failure of the air door. Thereby improving the operational reliability of the refrigerator.
Embodiments of the present invention also provide a machine-readable storage medium having computer-readable instructions stored thereon, which, when executed by the processor described above, enable the processor to perform the control method for a refrigerator described above.
Those skilled in the art can understand that all or part of the steps in the method for implementing the above embodiments may be implemented by a program instructing related hardware, where the program is stored in a storage medium and includes several instructions to enable a (which may be a single chip, a chip, etc.) or a processor (processor) to execute all or part of the steps in the method for implementing each embodiment of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In addition, various different embodiments of the present invention may be arbitrarily combined with each other, and the embodiments of the present invention should be considered as disclosed in the disclosure of the embodiments of the present invention as long as the embodiments do not depart from the spirit of the embodiments of the present invention.
Claims (11)
1. A control method for a refrigerator, the refrigerator including a refrigerating compartment, a damper provided at an air supply outlet of the refrigerating compartment, and a fan for generating an air flow to refrigerate the refrigerating compartment through the damper, the control method comprising:
determining that the refrigerator completes a defrosting process;
controlling a motor of the fan to start for multiple times before the next refrigerator carries out refrigeration;
the control motor of fan starts many times includes:
supplying power to the motor for a first preset time;
powering off the motor for a second preset time;
the first preset time is less than the second preset time, the range of the first preset time is 0.1 to 3 seconds, and the range of the second preset time is 1 to 30 seconds.
2. The control method according to claim 1, characterized by further comprising:
acquiring defrosting time of the refrigerator;
and determining the starting times of the motor according to the defrosting time.
3. The control method according to claim 2, characterized by further comprising:
acquiring the accumulated running time of a compressor of the refrigerator;
determining the number of starts of the motor according to the defrosting time includes: and determining the starting times according to the defrosting time and the accumulated running time.
4. The control method according to claim 2, characterized by further comprising: acquiring the temperature and the humidity of the environment where the refrigerator is located;
determining the number of starts of the motor according to the defrosting time includes: and determining the starting times according to the defrosting time, the temperature and the humidity.
5. The control method according to claim 2, wherein the determining the number of starts is based on the following formula:
N＝a*TE1+b*RH1+c*t1+d*t2
wherein N is the starting times of the motor, TE1 is the temperature, RH1 is the humidity, t1 is the accumulated running time of the compressor, t2 is the defrosting time, and a, b, c and d are respectively calculation coefficients.
6. A control device for a refrigerator including a refrigerating compartment, a damper provided at an air supply port of the refrigerating compartment, and a blower fan for generating an air flow to refrigerate the refrigerating compartment through the damper, the control device comprising:
the motor drives the fan to operate;
a processor configured to:
determining that the refrigerator completes a defrosting process;
controlling a motor of the fan to start for multiple times before the next refrigerator carries out refrigeration;
the processor is further configured to:
supplying power to the motor for a first preset time;
powering off the motor for a second preset time;
the first preset time is less than the second preset time, the range of the first preset time is 0.1 to 3 seconds, and the range of the second preset time is 1 to 30 seconds.
7. The control device of claim 6, wherein the processor is further configured to:
acquiring defrosting time of the refrigerator;
and determining the starting times of the motor according to the defrosting time.
8. The control device of claim 7, wherein the processor is further configured to:
acquiring the accumulated running time of a compressor of the refrigerator;
and determining the starting times according to the defrosting time and the accumulated running time.
9. The control device according to claim 8, characterized by further comprising:
the temperature sensor is used for detecting the temperature of the environment where the refrigerator is located;
the humidity sensor is used for detecting the humidity of the environment where the refrigerator is located;
the processor is further configured to:
acquiring the temperature and humidity from the temperature sensor and the humidity sensor;
and determining the starting times according to the defrosting time, the temperature and the humidity.
10. A refrigerator characterized in that it comprises a control device for a refrigerator according to any one of claims 6 to 9.
11. A machine-readable storage medium characterized in that the machine-readable storage medium has stored thereon computer-readable instructions for enabling a processor to execute the control method for a refrigerator according to any one of claims 1 to 5 when the computer-readable instructions are executed by the processor.
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| CN202010157352.3A CN111351305B (en) | 2020-03-09 | 2020-03-09 | Control method and control device for refrigerator, refrigerator and storage medium |
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| CN111351305A (en) | 2020-06-30 |
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