CN112033087A - Refrigerator defrosting control method and device, storage medium and refrigerator - Google Patents
Refrigerator defrosting control method and device, storage medium and refrigerator Download PDFInfo
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- CN112033087A CN112033087A CN202010782832.9A CN202010782832A CN112033087A CN 112033087 A CN112033087 A CN 112033087A CN 202010782832 A CN202010782832 A CN 202010782832A CN 112033087 A CN112033087 A CN 112033087A
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- defrosting heater
- temperature
- defrosting
- evaporator
- refrigerator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/002—Defroster control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- 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
- F25D17/067—Evaporator fan units
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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
- F25D21/008—Defroster control by timer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
- F25D21/08—Removing frost by electric heating
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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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
- F25D2317/068—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans
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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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- 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)
- Defrosting Systems (AREA)
Abstract
The invention provides a refrigerator defrosting control method, a device, a storage medium and a refrigerator, wherein the method comprises the following steps: the refrigerator is provided with a first defrosting heater and a second defrosting heater; the first defrosting heater is arranged in the middle or at the upper part of the evaporator; the second defrosting heater is arranged at the lower part of the evaporator; the method comprises the following steps: when the refrigerator meets defrosting conditions, controlling the first defrosting heater and the second defrosting heater to work so as to defrost; and controlling whether the first defrosting heater and/or the second defrosting heater are/is turned off or not according to the working time of the first defrosting heater and/or the second defrosting heater, the first temperature at the upper part of the evaporator and/or the second temperature at the air duct opening. The scheme provided by the invention can accelerate the melting of the upper frost layer of the evaporator and shorten the defrosting time.
Description
Technical Field
The invention relates to the field of control, in particular to a refrigerator defrosting control method and device, a storage medium and a refrigerator.
Background
According to the defrosting method of the conventional refrigerator, a defrosting heater is arranged at the lower part of an evaporator, the refrigerator is controlled to enter a defrosting logic according to parameters such as the running time of a compressor, the power-on time and the like, and the refrigerator exits the defrosting logic according to the temperature of a defrosting bulb. The defrosting temperature sensing bag is arranged at the upper part of the evaporator, defrosting is carried out by a method of natural rising of hot air, the rising of the hot air is slow, so that the defrosting time is too long, the defrosting energy consumption is increased, the temperature of an evaporation cavity is too high, and the power consumption is increased in the defrosting recovery period.
Disclosure of Invention
The invention mainly aims to overcome the defects of the prior art and provides a refrigerator defrosting control method, a device, a storage medium and a refrigerator, so as to solve the problem that in the prior art, a defrosting heater is arranged at the lower part of an evaporator, and the defrosting time is too long due to slow rising of hot air.
The invention provides a defrosting control method for a refrigerator, wherein the refrigerator is provided with a first defrosting heater and a second defrosting heater; the first defrosting heater is arranged in the middle or at the upper part of the evaporator; the second defrosting heater is arranged at the lower part of the evaporator; the method comprises the following steps: when the refrigerator meets defrosting conditions, controlling the first defrosting heater and the second defrosting heater to work so as to defrost; and controlling whether the first defrosting heater and/or the second defrosting heater are/is closed or not according to the working time of the first defrosting heater and/or the second defrosting heater, the first temperature at the upper part of the evaporator and/or the second temperature at the air channel opening of the evaporation cavity.
Optionally, a turbulent fan is arranged in an evaporation cavity of the refrigerator; the method further comprises the following steps: and when the working time of the first defrosting heater and the working time of the second defrosting heater reach a first preset time, controlling the turbulent flow fan to operate.
Optionally, controlling whether the first defrosting heater and/or the second defrosting heater is turned off according to the working time of the first defrosting heater and/or the second defrosting heater, the first temperature at the air flue opening of the evaporation cavity, and/or the second temperature at the upper part of the evaporator, includes: judging whether the working time of the second defrosting heater reaches a second preset time or not; when the second preset time is reached, controlling the second defrosting heater to be turned off; and controlling whether the first defrosting heater is closed or not according to the first temperature at the upper part of the evaporator and the second temperature at the air duct opening.
Optionally, controlling whether the first defrosting heater is turned off according to the first temperature at the upper part of the evaporator and the second temperature at the air duct opening includes: judging whether the first temperature at the upper part of the evaporator is greater than or equal to a first preset temperature or not and whether the second temperature at the air duct opening is greater than or equal to a second preset temperature or not; if the first temperature is greater than or equal to a first preset temperature and the second temperature is greater than or equal to a second preset temperature, controlling whether the first defrosting heater is turned off or not according to whether the duration time of the second temperature greater than or equal to the second preset temperature reaches a third preset time or not; and if the duration time reaches a third preset time, controlling the first defrosting heater to be turned off.
Optionally, when the evaporation intracavity of refrigerator is equipped with the vortex fan, still include: and after the first defrosting heater is controlled to be turned off, the turbulent flow fan is controlled to be turned off.
The invention provides a defrosting control device of a refrigerator, wherein the refrigerator is provided with a first defrosting heater and a second defrosting heater; the first defrosting heater is arranged in the middle or at the upper part of the evaporator; the second defrosting heater is arranged at the lower part of the evaporator; the apparatus, comprising: the first control unit is used for controlling the first defrosting heater and the second defrosting heater to work to defrost when the refrigerator meets defrosting conditions; and the second control unit is used for controlling whether the first defrosting heater and/or the second defrosting heater are/is closed or not according to the working time of the first defrosting heater and/or the second defrosting heater, the first temperature at the upper part of the evaporator and/or the second temperature at the air channel opening of the evaporation cavity.
Optionally, a turbulent fan is arranged in an evaporation cavity of the refrigerator; the first control unit is further configured to: and when the working time of the first defrosting heater and the working time of the second defrosting heater reach a first preset time, controlling the turbulent flow fan to operate.
Optionally, the second control unit controls whether the first defrosting heater and/or the second defrosting heater is turned off according to the working time of the first defrosting heater and/or the second defrosting heater, the first temperature at the air duct opening, and/or the second temperature at the upper part of the evaporator, and includes: judging whether the working time of the second defrosting heater reaches a second preset time or not; when the second preset time is reached, controlling the second defrosting heater to be turned off; and controlling whether the first defrosting heater is closed or not according to the first temperature at the upper part of the evaporator and the second temperature at the air channel opening of the evaporation cavity.
Optionally, the second control unit, which controls whether the first defrosting heater is turned off according to the first temperature at the upper part of the evaporator and the second temperature at the air duct opening, includes: judging whether the first temperature at the upper part of the evaporator is greater than or equal to a first preset temperature or not and whether the second temperature at the air duct opening is greater than or equal to a second preset temperature or not; if the first temperature is greater than or equal to a first preset temperature and the second temperature is greater than or equal to a second preset temperature, controlling whether the first defrosting heater is turned off or not according to whether the duration time of the second temperature greater than or equal to the second preset temperature reaches a third preset time or not; and if the duration time reaches a third preset time, controlling the first defrosting heater to be turned off.
Optionally, when a turbulent fan is arranged in the evaporation cavity of the refrigerator, the second control unit is further configured to: and after the first defrosting heater is controlled to be turned off, the turbulent flow fan is controlled to be turned off.
A further aspect of the invention provides a storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of any of the methods described above.
Yet another aspect of the present invention provides a refrigerator comprising a processor, a memory, and a computer program stored on the memory and operable on the processor, the processor implementing the steps of any of the methods described above when executing the program.
The invention further provides a refrigerator comprising the refrigerator control device.
According to the technical scheme, the distribution of the defrosting heaters is adjusted, the double defrosting heaters are used, the turbulent fan of the evaporation cavity is added, the temperature distribution of the evaporation cavity during defrosting is improved, the defrosting heater is added in the middle or at the upper part of the evaporator, the melting of a frost layer at the upper part of the evaporator can be accelerated, the turbulent fan is added, the temperature in the evaporation cavity is disturbed during defrosting, and the defrosting process is accelerated. Compared with a conventional defrosting mode, the defrosting time is shortened, the temperature rise of the evaporation cavity is reduced, the power consumption of the unit is reduced when the unit needs to refrigerate again in the defrosting recovery period to cool the temperature of the evaporation cavity again, and the energy efficiency of the unit is improved. According to the technical scheme, the defrosting control of the defrosting heater is optimized, whether the defrosting heater is closed or not is controlled according to the working time of the defrosting heater, the upper temperature of the evaporator and/or the temperature of the air duct opening, the defrosting time of the unit is shortened, the power consumption of the defrosting recovery period is reduced, and the energy efficiency of the unit is improved; the defrosting exiting condition is optimized, whether the defrosting layer on the evaporator is completely removed or not is judged according to the temperature of the upper part of the evaporator, whether the residual ice in the air channel is completely removed or not is judged according to the temperature of the air channel opening, the problem that the residual ice in the air channel of the refrigerator cannot be completely removed is solved, and the reliability of the unit is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram illustrating a defrosting control method for a refrigerator according to an embodiment of the present invention;
FIG. 2 is a schematic view of a defrosting heater arrangement according to the present invention;
FIG. 3 is a schematic diagram of a refrigerator control method according to an embodiment of the present invention;
fig. 4 is a block diagram of a refrigerator defrosting control device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
According to the defrosting method of the conventional refrigerator, a defrosting temperature sensing bag is arranged at the upper part of an evaporator, defrosting is carried out by a method of naturally rising hot air, the defrosting time is too long due to the fact that the hot air rises slowly, defrosting energy consumption is increased, the temperature of an evaporation cavity is too high, and power consumption is increased in a defrosting recovery period. When defrosting is carried out at the lower part of the defrosting process of the evaporator, the local temperature of the upper part is still below zero due to the fact that frost exists on the upper part of the evaporator, when the temperature of the upper part of the evaporator reaches the defrosting temperature, the unit basically reaches a defrosting exit condition, at the moment, the residual ice in the air duct still cannot reach the defrosting temperature, the residual ice in the air duct cannot be melted, and the refrigerating performance of the unit is affected.
The invention provides a refrigerator defrosting control method. The refrigerator is provided with a first defrosting heater and a second defrosting heater; the first defrosting heater is arranged in the middle or at the upper part of the evaporator; the second defrosting heater is arranged at the lower part of the evaporator. The first defrosting heater may be disposed at a middle position of the evaporator, or may be disposed at an upper portion of the evaporator, and the second defrosting heater may be disposed directly below the evaporator.
Fig. 2 is a schematic view of a defrosting heater installation position according to the present invention. As shown in fig. 2, the first defrosting heater 1 is disposed at the middle of the evaporator 6; the second defrosting heater 2 is arranged at the lower part of the evaporator 6. The upper part of the evaporator 6 is provided with a first defrosting bulb 3 for detecting a first temperature t1 at the upper part of the evaporator, for example, the first defrosting bulb 3 is arranged on an upper pipeline of the evaporator and detects the air temperature at the position of the upper pipeline of the evaporator; and a second defrosting thermal bulb 4 is arranged at the air duct opening 7 of the evaporation cavity and is used for detecting a second temperature t2 at the air duct opening 7 of the evaporation cavity. The air duct opening 7 is an air duct inlet for blowing air in the evaporation cavity into the refrigeration cavity.
Preferably, a turbulent fan 5 is arranged in the evaporation cavity, specifically, the turbulent fan 5 is arranged below the second defrosting heater, so that the temperature in the evaporation cavity is disturbed during defrosting, and the defrosting process is accelerated.
Fig. 1 is a method schematic diagram of an embodiment of a refrigerator defrosting control method provided by the invention.
As shown in fig. 1, according to an embodiment of the present invention, the refrigerator control method includes at least step S110 and step S120.
And step S110, when the refrigerator meets defrosting conditions, controlling the first defrosting heater and the second defrosting heater to work so as to defrost.
Specifically, whether the refrigerator unit meets a defrosting condition or not is judged, when the defrosting condition is met, the compressor is controlled to stop, the first defrosting heater 1 and the second defrosting heater 2 are electrified to work, and the refrigerator unit starts defrosting. And if the defrosting condition is not met, the unit continues to operate according to the set logic.
Preferably, when the working time of the first defrosting heater and the working time of the second defrosting heater reach a first preset time, the turbulent flow fan is controlled to operate. Namely, when the working time T1 of the first defrosting heater is more than or equal to Ta (the first preset time), the operation of the turbulent flow fan is controlled, the temperature in the evaporation cavity is disturbed, and the defrosting process is accelerated. The first preset time may be specifically a time required for the lower temperature of the evaporator to reach a preset temperature (for example, 0 ℃) when the first defrosting heater and the second defrosting heater work, and may be obtained through an experiment, for example, 10 minutes.
When the defrosting heater starts to work, the generated heat is directly absorbed by a frost layer, the temperature of the evaporation cavity is still very low, after the defrosting heater works for a certain time (namely the first preset time Ta), the temperature of the lower part of the evaporation cavity reaches above 0 ℃, the temperature of the upper part of the evaporation cavity is still below 0 ℃, and at the moment, the turbulent fan operates to blow air above 0 ℃ at the lower part of the evaporation cavity to the upper part, so that defrosting of the evaporator is accelerated.
And step S120, controlling whether the first defrosting heater and/or the second defrosting heater are turned off or not according to the working time of the first defrosting heater and/or the second defrosting heater, the first temperature of the upper part of the evaporator and/or the second temperature of the air channel opening.
Specifically, whether the working time of the second defrosting heater reaches a second preset time or not is judged; when the second preset time is reached, controlling the second defrosting heater to be turned off; and controlling whether the first defrosting heater is closed or not according to the first temperature at the upper part of the evaporator and the second temperature at the air duct opening.
For example, whether the working time T2 of the second defrosting heater meets T2 ≧ Tb (second preset time) is judged, and when T2 ≧ Tb is met, the second defrosting heater is controlled to be turned off. Preferably, the second preset time is longer than the first preset time, for example, the first preset time is 10 minutes, and the second preset time is 15 minutes.
When defrosting is carried out for a certain time (second preset time), the frost layer at the lower part of the evaporator is completely removed, the temperature at the lower part of the evaporator rises violently if a defrosting heater (a second defrosting heater) at the lower part of the evaporator works continuously, the defrosting heater at the lower part of the evaporator works to have little influence on the defrosting at the upper part of the evaporator, the defrosting heater at the lower part of the evaporator is turned off, the defrosting requirement can be completely met only by the defrosting heater (the second defrosting heater) at the middle part of the evaporator, and electric energy is saved.
And after the second defrosting heater is controlled to be turned off, controlling whether the second defrosting heater is turned off or not according to the first temperature at the upper part of the evaporator and the second temperature at the air duct opening. Specifically, whether a first temperature at the upper part of the evaporator is greater than or equal to a first preset temperature and whether a second temperature at the air duct opening is greater than or equal to a second preset temperature is judged; if the first temperature is greater than or equal to a first preset temperature and the second temperature is greater than or equal to a second preset temperature, controlling whether the first defrosting heater is turned off or not according to whether the duration time of the second temperature greater than or equal to the second preset temperature reaches a third preset time or not; and if the duration time reaches a third preset time, controlling the first defrosting heater to be turned off.
And judging whether the first temperature of the upper part of the evaporator is more than or equal to a first preset temperature, namely judging whether the frost layer on the evaporator is completely removed, and judging whether the second temperature at the air duct opening is more than or equal to a second preset temperature, namely judging whether the residual ice in the air duct is completely removed. The first preset temperature and the second preset temperature can be obtained through experiments, namely, the temperature reached by the upper part of the evaporator when the frost layer on the evaporator is completely removed and the temperature reached by the air duct opening when the residual ice in the air duct is completely removed are tested through experiments.
For example, whether the first temperature t1 at the upper part of the evaporator meets t1 ≧ ta (first preset temperature) and whether the second temperature t2 at the air duct opening meets t2 ≧ tb (second preset temperature) is judged, preferably, whether t1 ≧ ta is judged first, and if t1 ≧ ta is met, whether t2 ≧ tb is judged; if the time meeting t1 is more than or equal to ta and t2 is more than or equal to tb, whether the time meeting t2 is more than or equal to tb reaches Tc (third preset time) is continuously judged, and if the time meeting t2 is more than or equal to tb reaches Tc, the first defrosting heater is controlled to be closed, namely the power is cut off and the work is stopped.
And after the first defrosting heater is controlled to be turned off, the turbulent flow fan is controlled to be turned off, and the refrigerator unit exits from the defrosting logic.
In order to clearly illustrate the technical solution of the present invention, the following describes an execution flow of the refrigerator control method provided by the present invention with a specific embodiment.
Fig. 3 is a schematic method diagram of a refrigerator control method according to an embodiment of the present invention. As shown in fig. 3, the unit is powered on and the compressor operates according to the set logic based on the compartment temperature. And judging that the unit reaches a defrosting entry condition, if the unit reaches the defrosting entry condition, stopping the compressor, powering on the first defrosting heater 1 and the second defrosting heater 2, starting defrosting of the unit, and if the unit does not reach the defrosting condition, continuing to operate according to set logic. The temperature T1 and T2 of the first defrosting bulb 3 and the second defrosting bulb 4 are monitored in real time, and the working time T1 and T2 of the first defrosting heater 1 and the second defrosting heater 2 are calculated in real time. And judging whether the working time T1 of the defrosting heater meets the condition that T1 is more than or equal to Ta (Ta can take 10 minutes), if the condition is met, electrifying the turbulent flow fan to operate, and if the condition is not met, returning to the logic operation. And judging whether the working time T2 of the second defrosting heater 2 meets T2 which is not less than Tb (Tb can take 15 minutes), if the condition is met, closing the second defrosting heater 2, and if the condition is not met, returning to continuously judging whether T2 which is not less than Tb is met. After the second defrosting heater 2 is turned off, whether the first temperature t1 detected by the first defrosting bulb meets t1 is not less than ta (ta can be 8 ℃) is judged, if the conditions are met, whether the second temperature t2 detected by the second defrosting bulb meets t2 is not less than tb (tb can be 3 ℃) is judged, and the next logic is operated. And if not, returning to the logic operation. And judging whether the second temperature T2 detected by the second defrosting thermal bulb meets the condition that whether the time T2 is more than or equal to tb is more than or equal to Tc (T5 is a preset time value, and can take 3 minutes here) or not, if so, stopping working when the first defrosting heater is powered off, closing the turbulent fan, exiting the defrosting logic, and if not, returning to the logic until the unit is powered off.
The invention also provides a defrosting control device of the refrigerator. The refrigerator is provided with a first defrosting heater and a second defrosting heater; the first defrosting heater is arranged in the middle or at the upper part of the evaporator; the second defrosting heater is arranged at the lower part of the evaporator. The first defrosting heater may be disposed at a middle position of the evaporator, or may be disposed at an upper portion of the evaporator, and the second defrosting heater may be disposed directly below the evaporator.
Fig. 2 is a schematic view of a defrosting heater installation position according to the present invention. As shown in fig. 2, the first defrosting heater 1 is disposed at the middle of the evaporator 6; the second defrosting heater 2 is arranged at the lower part of the evaporator 6. The upper part of the evaporator 6 is provided with a first defrosting bulb 3 for detecting a first temperature t1 at the upper part of the evaporator, for example, the first defrosting bulb 3 is arranged on an upper pipeline of the evaporator and detects the air temperature at the position of the upper pipeline of the evaporator; and a second defrosting thermal bulb 4 is arranged at the air duct opening 7 of the evaporation cavity and is used for detecting a second temperature t2 at the air duct opening 7 of the evaporation cavity. The air duct opening 7 is an air duct inlet for blowing air in the evaporation cavity into the refrigeration cavity.
Preferably, a turbulent fan 5 is arranged in the evaporation cavity, specifically, the turbulent fan 5 is arranged below the second defrosting heater, so that the temperature in the evaporation cavity is disturbed during defrosting, and the defrosting process is accelerated.
Fig. 4 is a block diagram of a refrigerator defrosting control device according to an embodiment of the present invention. As shown in fig. 4, the control device 100 includes: a first control unit 110 and a second control unit 120.
The first control unit 110 is configured to control the first defrosting heater and the second defrosting heater to operate to defrost when the refrigerator meets a defrosting condition.
Specifically, whether the refrigerator unit meets the defrosting condition or not is judged, and when the defrosting condition is met, the first control unit 110 controls the compressor to stop, the first defrosting heater 1 and the second defrosting heater 2 are electrified to work, and the refrigerator unit starts defrosting. And if the defrosting condition is not met, the unit continues to operate according to the set logic.
Preferably, the first control unit 110 is further configured to: and when the working time of the first defrosting heater and the working time of the second defrosting heater reach a first preset time, controlling the turbulent flow fan to operate. Namely, when the working time T1 of the first defrosting heater is more than or equal to Ta (the first preset time), the operation of the turbulent flow fan is controlled, the temperature in the evaporation cavity is disturbed, and the defrosting process is accelerated. The first preset time may be specifically a time required for the lower temperature of the evaporator to reach a preset temperature (for example, 0 ℃) when the first defrosting heater and the second defrosting heater work, and may be obtained through an experiment, for example, 10 minutes.
When the defrosting heater starts to work, the generated heat is directly absorbed by a frost layer, the temperature of the evaporation cavity is still very low, after the defrosting heater works for a certain time (namely the first preset time Ta), the temperature of the lower part of the evaporation cavity reaches above 0 ℃, the temperature of the upper part of the evaporation cavity is still below 0 ℃, and at the moment, the turbulent fan operates to blow air above 0 ℃ at the lower part of the evaporation cavity to the upper part, so that defrosting of the evaporator is accelerated.
The second control unit 120 is configured to control whether the first defrosting heater and/or the second defrosting heater are turned off according to the working time of the first defrosting heater and/or the second defrosting heater, the first temperature of the upper portion of the evaporator, and/or the second temperature at the air duct opening.
Specifically, the second control unit 120 determines whether the operating time of the second defrosting heater reaches a second preset time; when the second preset time is reached, controlling the second defrosting heater to be turned off; and controlling whether the first defrosting heater is closed or not according to the first temperature at the upper part of the evaporator and the second temperature at the air duct opening.
For example, whether the working time T2 of the second defrosting heater meets T2 ≧ Tb (second preset time) is judged, and when T2 ≧ Tb is met, the second defrosting heater is controlled to be turned off. Preferably, the second preset time is longer than the first preset time, for example, the first preset time is 10 minutes, and the second preset time is 15 minutes.
When defrosting is carried out for a certain time (second preset time), the frost layer at the lower part of the evaporator is completely removed, the temperature at the lower part of the evaporator rises violently if a defrosting heater (a second defrosting heater) at the lower part of the evaporator works continuously, the defrosting heater at the lower part of the evaporator works to have little influence on the defrosting at the upper part of the evaporator, the defrosting heater at the lower part of the evaporator is turned off, the defrosting requirement can be completely met only by the defrosting heater (the second defrosting heater) at the middle part of the evaporator, and electric energy is saved.
After the second control unit 120 controls the second defrosting heater to be turned off, whether the second defrosting heater is turned off is controlled according to the first temperature at the upper part of the evaporator and the second temperature at the air duct opening. Specifically, whether a first temperature at the upper part of the evaporator is greater than or equal to a first preset temperature and whether a second temperature at the air duct opening is greater than or equal to a second preset temperature is judged; if the first temperature is greater than or equal to a first preset temperature and the second temperature is greater than or equal to a second preset temperature, controlling whether the first defrosting heater is turned off or not according to whether the duration time of the second temperature greater than or equal to the second preset temperature reaches a third preset time or not; and if the duration time reaches a third preset time, controlling the first defrosting heater to be turned off.
And judging whether the first temperature of the upper part of the evaporator is more than or equal to a first preset temperature, namely judging whether the frost layer on the evaporator is completely removed, and judging whether the second temperature at the air duct opening is more than or equal to a second preset temperature, namely judging whether the residual ice in the air duct is completely removed. The first preset temperature and the second preset temperature can be obtained through experiments, namely, the temperature reached by the upper part of the evaporator when the frost layer on the evaporator is completely removed and the temperature reached by the air duct opening when the residual ice in the air duct is completely removed are tested through experiments.
For example, whether the first temperature t1 at the upper part of the evaporator meets t1 ≧ ta (first preset temperature) and whether the second temperature t2 at the air duct opening meets t2 ≧ tb (second preset temperature) is judged, preferably, whether t1 ≧ ta is judged first, and if t1 ≧ ta is met, whether t2 ≧ tb is judged; if the time meeting t1 is more than or equal to ta and t2 is more than or equal to tb, whether the time meeting t2 is more than or equal to tb reaches Tc (third preset time) is continuously judged, and if the time meeting t2 is more than or equal to tb reaches Tc, the first defrosting heater is controlled to be closed, namely the power is cut off and the work is stopped.
After the second control unit 120 controls the first defrosting heater to be turned off, the turbulent fan is controlled to be turned off, and the refrigerator unit exits the defrosting logic.
The invention also provides a storage medium corresponding to the refrigerator defrosting control method, and a computer program is stored on the storage medium, and when the program is executed by a processor, the program realizes the steps of any one of the methods.
The invention also provides a refrigerator corresponding to the refrigerator defrosting control method, which comprises a processor, a memory and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the program to realize the steps of any one of the methods.
The invention also provides a refrigerator corresponding to the refrigerator defrosting control device, which comprises the refrigerator defrosting control device.
According to the scheme provided by the invention, the distribution of the defrosting heaters is adjusted, the double defrosting heaters are used, the turbulent fan of the evaporation cavity is added, the temperature distribution of the evaporation cavity during defrosting is improved, the defrosting heater is added in the middle or at the upper part of the evaporator, the melting of a frost layer at the upper part of the evaporator can be accelerated, the turbulent fan is added, the temperature in the evaporation cavity is disturbed during defrosting, and the defrosting process is accelerated. Compared with a conventional defrosting mode, the defrosting time is shortened, the temperature rise of the evaporation cavity is reduced, the power consumption of the unit is reduced when the unit needs to refrigerate again in the defrosting recovery period to cool the temperature of the evaporation cavity again, and the energy efficiency of the unit is improved. According to the technical scheme, the defrosting control of the defrosting heater is optimized, whether the defrosting heater is closed or not is controlled according to the working time of the defrosting heater, the upper temperature of the evaporator and/or the temperature of the air duct opening, the defrosting time of the unit is shortened, the power consumption of the defrosting recovery period is reduced, and the energy efficiency of the unit is improved; the defrosting exiting condition is optimized, whether the defrosting layer on the evaporator is completely removed or not is judged according to the temperature of the upper part of the evaporator, whether the residual ice in the air channel is completely removed or not is judged according to the temperature of the air channel opening, the problem that the residual ice in the air channel of the refrigerator cannot be completely removed is solved, and the reliability of the unit is improved.
The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope and spirit of the invention and the following claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hardwired, or a combination of any of these. In addition, each functional unit may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and the parts serving as the control device may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (12)
1. A refrigerator defrosting control method is characterized by comprising the following steps:
the refrigerator is provided with a first defrosting heater and a second defrosting heater; the first defrosting heater is arranged in the middle or at the upper part of the evaporator; the second defrosting heater is arranged at the lower part of the evaporator;
when the refrigerator meets defrosting conditions, controlling the first defrosting heater and the second defrosting heater to work so as to defrost;
and controlling whether the first defrosting heater and/or the second defrosting heater are/is closed or not according to the working time of the first defrosting heater and/or the second defrosting heater, the first temperature at the upper part of the evaporator and/or the second temperature at the air channel opening of the evaporation cavity.
2. The method of claim 1, wherein a turbulent fan is disposed in the evaporation chamber of the refrigerator; the method further comprises the following steps:
and when the working time of the first defrosting heater and the working time of the second defrosting heater reach a first preset time, controlling the turbulent flow fan to operate.
3. The method according to claim 1 or 2, wherein controlling whether the first defrosting heater and/or the second defrosting heater is turned off according to the working time of the first defrosting heater and/or the second defrosting heater, the first temperature at the air channel opening of the evaporation cavity and/or the second temperature of the upper part of the evaporator comprises:
judging whether the working time of the second defrosting heater reaches a second preset time or not;
when the second preset time is reached, controlling the second defrosting heater to be turned off;
and controlling whether the first defrosting heater is closed or not according to the first temperature at the upper part of the evaporator and the second temperature at the air duct opening.
4. The method of claim 3, wherein controlling whether the first defrosting heater is turned off according to the first temperature of the upper portion of the evaporator and the second temperature of the air outlet comprises:
judging whether the first temperature at the upper part of the evaporator is greater than or equal to a first preset temperature or not and whether the second temperature at the air duct opening is greater than or equal to a second preset temperature or not;
if the first temperature is greater than or equal to a first preset temperature and the second temperature is greater than or equal to a second preset temperature, controlling whether the first defrosting heater is turned off or not according to whether the duration time of the second temperature greater than or equal to the second preset temperature reaches a third preset time or not;
and if the duration time reaches a third preset time, controlling the first defrosting heater to be turned off.
5. The method as claimed in claim 4, wherein when the turbulent fan is disposed in the evaporation chamber of the refrigerator, the method further comprises:
and after the first defrosting heater is controlled to be turned off, the turbulent flow fan is controlled to be turned off.
6. A refrigerator defrosting control device is characterized in that a first defrosting heater and a second defrosting heater are arranged on the refrigerator; the first defrosting heater is arranged in the middle or at the upper part of the evaporator; the second defrosting heater is arranged at the lower part of the evaporator;
the apparatus, comprising:
the first control unit is used for controlling the first defrosting heater and the second defrosting heater to work to defrost when the refrigerator meets defrosting conditions;
and the second control unit is used for controlling whether the first defrosting heater and/or the second defrosting heater are/is closed or not according to the working time of the first defrosting heater and/or the second defrosting heater, the first temperature at the upper part of the evaporator and/or the second temperature at the air channel opening of the evaporation cavity.
7. The apparatus of claim 6, wherein a turbulent fan is disposed in the evaporation chamber of the refrigerator;
the first control unit is further configured to: and when the working time of the first defrosting heater and the working time of the second defrosting heater reach a first preset time, controlling the turbulent flow fan to operate.
8. The device according to claim 6 or 7, wherein the second control unit controls whether the first defrosting heater and/or the second defrosting heater is turned off according to the working time of the first defrosting heater and/or the second defrosting heater, the first temperature at the air channel opening of the evaporation cavity and/or the second temperature at the upper part of the evaporator, and comprises:
judging whether the working time of the second defrosting heater reaches a second preset time or not;
when the second preset time is reached, controlling the second defrosting heater to be turned off;
and controlling whether the first defrosting heater is closed or not according to the first temperature at the upper part of the evaporator and the second temperature at the air duct opening.
9. The apparatus of claim 8, wherein the second control unit controls whether the first defrosting heater is turned off according to a first temperature of an upper portion of the evaporator and a second temperature of the air outlet, and comprises:
judging whether the first temperature at the upper part of the evaporator is greater than or equal to a first preset temperature or not and whether the second temperature at the air duct opening is greater than or equal to a second preset temperature or not;
if the first temperature is greater than or equal to a first preset temperature and the second temperature is greater than or equal to a second preset temperature, controlling whether the first defrosting heater is turned off or not according to whether the duration time of the second temperature greater than or equal to the second preset temperature reaches a third preset time or not;
and if the duration time reaches a third preset time, controlling the first defrosting heater to be turned off.
10. The apparatus of claim 9, wherein when a turbulent fan is disposed in the evaporation chamber of the refrigerator, the second control unit is further configured to:
and after the first defrosting heater is controlled to be turned off, the turbulent flow fan is controlled to be turned off.
11. A storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 5.
12. A refrigerator comprising a processor, a memory, and a computer program stored on the memory and operable on the processor, the processor implementing the steps of the method of any one of claims 1 to 5 when executing the program, or comprising the refrigerator defrosting control apparatus of any one of claims 6 to 10.
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| CN202010782832.9A CN112033087A (en) | 2020-08-06 | 2020-08-06 | Refrigerator defrosting control method and device, storage medium and refrigerator |
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| CN202010782832.9A CN112033087A (en) | 2020-08-06 | 2020-08-06 | Refrigerator defrosting control method and device, storage medium and refrigerator |
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| CN112696862A (en) * | 2020-12-18 | 2021-04-23 | 合肥朗驰工业设计有限公司 | Intermittent defrosting control method for refrigerator and air-cooled refrigerator |
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| CN113776266A (en) * | 2021-09-06 | 2021-12-10 | 珠海格力电器股份有限公司 | Defrosting control method and device and refrigerator |
| CN114322420A (en) * | 2021-12-31 | 2022-04-12 | 长虹美菱股份有限公司 | Freezing air duct freezing removal device for refrigerator and control method thereof |
| CN115143685A (en) * | 2022-07-12 | 2022-10-04 | 珠海格力电器股份有限公司 | Defrosting control method and refrigeration equipment |
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