CN111365930A - Refrigerator and defrosting method thereof - Google Patents
Refrigerator and defrosting method thereof Download PDFInfo
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- CN111365930A CN111365930A CN202010209717.2A CN202010209717A CN111365930A CN 111365930 A CN111365930 A CN 111365930A CN 202010209717 A CN202010209717 A CN 202010209717A CN 111365930 A CN111365930 A CN 111365930A
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- defrosting
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- refrigerator
- evaporator
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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
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
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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
- F25D21/06—Removing frost
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- General Engineering & Computer Science (AREA)
- Defrosting Systems (AREA)
Abstract
The embodiment of the application provides a refrigerator and a defrosting method thereof, relates to the field of refrigerator defrosting, and can increase defrosting reliability while guaranteeing freshness of food in the refrigerator. The refrigerator includes: at least one storage compartment; an evaporator corresponding to the storage chamber; a master control board configured to: when the defrosting of the target evaporator by the defrosting device of the refrigerator meets a defrosting exit condition, if the frosting amount of the target evaporator is determined to be an overlarge frosting amount, the defrosting device is controlled to stop defrosting the target evaporator, and the refrigerator is controlled to refrigerate the target storage chamber; when the temperature of the target storage chamber is lower than the target preset temperature, controlling the defrosting device to defrost the target evaporator; the target evaporator is any one of evaporators, and the target storage chamber is at least one storage chamber of which the temperature is most affected by defrosting of the target evaporator. The application is applied to the refrigerator.
Description
Technical Field
The application relates to the field of defrosting of refrigerators, in particular to a refrigerator and a defrosting method thereof.
Background
The refrigerator that sells on the market at present generally judges whether need to change the frost according to compressor accumulative operation time, it changes the frost promptly to reach certain quantum when the frost cycle is changed to the compressor accumulative operation time, it changes the frost usually to change the frost heater and heat the defrosting to the evaporimeter during the defrosting, because this period of changing the frost is that the product research and development stage laboratory is according to specific ambient humidity, the period of changing the frost that ambient temperature gave, the period of changing the frost of different regional markets can not be satisfied in many times, often can cause and change the frost thoroughly, the frost on the evaporimeter can become real ice after changing the frost thoroughly several times in succession, block up the evaporimeter, make the refrigerator lose the refrigerating capacity. At present, aiming at the problem, two aiming schemes exist in the prior art, one is to reduce the defrosting period when the frosting amount is too large, and the other is to input more heat when defrosting. However, in the first mode, only the next defrosting is made to arrive as soon as possible, and the defect that the current defrosting is insufficient still exists; in the second method, the increased heat can lead to excessive heat, which can reduce the freshness of food in the refrigerator, although the defrosting is more sufficient.
Disclosure of Invention
Embodiments of the present application provide a refrigerator and a defrosting method thereof, which can increase defrosting reliability while not affecting freshness of food in the refrigerator.
In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:
in a first aspect, there is provided a refrigerator including: at least one storage compartment; an evaporator corresponding to the storage chamber; a master control board configured to: when the defrosting of the target evaporator by the defrosting device of the refrigerator meets a defrosting exit condition, if the frosting amount of the target evaporator is determined to be an overlarge frosting amount, the defrosting device is controlled to stop defrosting the target evaporator, and the refrigerator is controlled to refrigerate the target storage chamber; when the temperature of the target storage chamber is lower than the target preset temperature, controlling the defrosting device to defrost the target evaporator; the target evaporator is any one of evaporators, and the target storage chamber is at least one storage chamber of which the temperature is most affected by defrosting of the target evaporator.
In the technical solution provided by the above embodiment, when the defrosting device of the refrigerator defrosts a certain evaporator (target evaporator) and meets a defrosted exit condition, the main control board first determines whether the current frosting amount of the target evaporator is an excessive frosting amount, and if the current frosting amount is an excessive frosting amount, it indicates that there is a possibility that the current frosting is insufficient, and then in order to fully defrost, it is necessary to add one more defrosting as soon as possible to ensure that the frosting on the target evaporator does not accumulate too much to affect the performance. However, the additional defrosting cannot come too fast or too slow, because if the additional defrosting comes too fast, the freshness of food in the refrigerator is reduced due to excessive heat of the defrosting twice, and if the additional defrosting comes too slow, the defrosting is not cleaned and new frosting is generated again, so that the frosting is more difficult to clean. Therefore, in order to ensure the freshness of food and defrost as soon as possible, at the moment, after the main control board controls the defrosting device to stop defrosting the target evaporator, the main control board controls the refrigerator to refrigerate the target storage chamber (the storage chamber with the temperature most affected by the defrosting of the target evaporator) and simultaneously judges whether the temperature of the target storage chamber is lower than or not, and the main control board is a target preset temperature which can ensure that the defrosting process does not affect the freshness of the food in the target storage chamber; when the main control board determines that the temperature of the target storage chamber is lower than the target preset temperature, the defrosting device is controlled to defrost the target evaporator again, and then the defrosting circulation process is continued. Therefore, the time between two times of defrosting can be continuously adjusted according to the actual situation, so that the freshness of food is ensured, the defrosting reliability is improved, and the repeated accumulation of frosting is avoided. Therefore, the technical scheme provided by the embodiment of the application can improve the reliability of defrosting of the refrigerator while ensuring the freshness of food in the refrigerator.
In a second aspect, there is provided a defrosting method of a refrigerator as provided in the first aspect, comprising: when the defrosting of the target evaporator by the defrosting device of the refrigerator meets a defrosting exit condition, if the frosting amount of the target evaporator is determined to be an overlarge frosting amount, the defrosting device is controlled to stop defrosting the target evaporator, and the refrigerator is controlled to refrigerate the target storage chamber; when the temperature of the target storage chamber is lower than the target preset temperature, controlling the defrosting device to defrost the target evaporator; the target evaporator is any one of evaporators, and the target storage chamber is at least one storage chamber of which the temperature is most affected by defrosting of the target evaporator.
In a third aspect, a main control board of a refrigerator is provided, which comprises a memory, a processor, a bus and a communication interface; the memory is used for storing computer execution instructions, and the processor is connected with the memory through a bus; when the main control board of the refrigerator is operated, the processor executes the computer execution instructions stored in the memory, so that the main control board of the refrigerator executes the defrosting method of the refrigerator as provided by the second aspect.
The refrigerator and the defrosting method thereof provided by the embodiment of the application are characterized in that the refrigerator comprises: at least one storage compartment; an evaporator corresponding to the storage chamber; a master control board configured to: when the defrosting of the target evaporator by the defrosting device of the refrigerator meets a defrosting exit condition, if the frosting amount of the target evaporator is determined to be an overlarge frosting amount, the defrosting device is controlled to stop defrosting the target evaporator, and the refrigerator is controlled to refrigerate the target storage chamber; when the temperature of the target storage chamber is lower than the target preset temperature, controlling the defrosting device to defrost the target evaporator; the target evaporator is any one of evaporators, and the target storage chamber is at least one storage chamber of which the temperature is most affected by defrosting of the target evaporator. Therefore, in the technical scheme provided by the application, when a refrigerator is defrosted, when a defrosting device of the refrigerator defrosters an evaporator (a target evaporator) to meet a defrosting exit condition, a main control board firstly judges whether the current frosting amount of the target evaporator is an excessive frosting amount, if the current frosting amount is the excessive frosting amount, it is indicated that the current frosting amount is insufficient, and then in order to fully defrost, the defrosting needs to be added again as soon as possible to ensure that the frosting on the target evaporator does not accumulate too much to influence the performance. However, the additional defrosting cannot come too fast or too slow, because if the additional defrosting comes too fast, the freshness of food in the refrigerator is reduced due to excessive heat of the defrosting twice, and if the additional defrosting comes too slow, the defrosting is not cleaned and new frosting is generated again, so that the frosting is more difficult to clean. Therefore, in order to ensure the freshness of food and defrost as soon as possible, at the moment, after the main control board controls the defrosting device to stop defrosting the target evaporator, the main control board controls the refrigerator to refrigerate the target storage chamber (the storage chamber with the temperature most affected by the defrosting of the target evaporator) and simultaneously judges whether the temperature of the target storage chamber is lower than or not, and the main control board is a target preset temperature which can ensure that the defrosting process does not affect the freshness of the food in the target storage chamber; when the main control board determines that the temperature of the target storage chamber is lower than the target preset temperature, the defrosting device is controlled to defrost the target evaporator again, and then the defrosting circulation process is continued. Therefore, the time between two times of defrosting can be continuously adjusted according to the actual situation, so that the freshness of food is ensured, the defrosting reliability is improved, and the repeated accumulation of frosting is avoided. To sum up, the technical scheme that this application embodiment provided can improve the reliability that the refrigerator defrosted when guaranteeing food freshness in the refrigerator.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a refrigerator according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a single-system refrigerator according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a dual-system refrigerator according to an embodiment of the present disclosure;
fig. 4 is a schematic flowchart of a control method of a refrigerator according to an embodiment of the present disclosure;
fig. 5 is a schematic flowchart of another control method for a refrigerator according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a main control board of a refrigerator according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a main control board of another refrigerator provided in an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. 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 application.
It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
It should be noted that in the embodiments of the present application, "of", "corresponding" and "corresponding" may be sometimes used in combination, and it should be noted that the intended meaning is consistent when the difference is not emphasized.
For the convenience of clearly describing the technical solutions of the embodiments of the present application, in the embodiments of the present application, the terms "first", "second", and the like are used for distinguishing the same items or similar items with basically the same functions and actions, and those skilled in the art can understand that the terms "first", "second", and the like are not limited in number or execution order.
At present, the defrosting cycle of the refrigerator is obtained in a special environment in a laboratory in the product research and development stage. When the refrigerator is in an environment different from a special environment in a laboratory, the defrosting period set in advance in the refrigerator often causes incomplete defrosting of the refrigerator, and the evaporator cannot work normally. Aiming at the problem, two aiming schemes exist at present, namely, the defrosting period is shortened when the frosting amount is too large, and more heat is input during defrosting. However, in the first mode, only the next defrosting is made to arrive as soon as possible, and the defect that the current defrosting is insufficient still exists; in the second method, the increased heat can lead to excessive heat, which can reduce the freshness of food in the refrigerator, although the defrosting is more sufficient.
In view of the above problems, referring to fig. 1, an embodiment of the present application provides a refrigerator 01 including at least one storage chamber 11(11-1 and 11-2), an evaporator 12 corresponding to the storage chamber 11 (12-1 corresponding to 11-1 and 12-2 corresponding to 11-2), and a main control panel 13. Here, the main control board 13 may be, for example, a Micro Control Unit (MCU), and a port for transmitting data is a general purpose input/output (GPIO). In addition, the refrigerator 01 further includes a defrosting device 14 (e.g., a defrosting heater) for defrosting a target evaporator of frosting, and the defrosting device 14 is connected to the main control board 13. For example, the defrosting device 14 may be a defrosting heater that can heat and defrost each storage chamber, or may be composed of a defrosting heater and a central control device (which may be disposed in a main control panel) disposed in a plurality of storage chambers.
Wherein the main control board 13 is configured to: when the defrosting device 14 of the refrigerator 01 defrosts the target evaporator to meet a defrosting exit condition, if the frosting amount of the target evaporator is determined to be an excessive frosting amount, the defrosting device 14 is controlled to stop, and the refrigerator is controlled to refrigerate the target storage chamber; when the temperature of the target storage chamber is lower than the target preset temperature, controlling the defrosting device 14 to defrost the target evaporator; the target evaporator is any one of evaporators, and the target storage chamber is at least one storage chamber 11 in which the temperature is most affected by defrosting of the target evaporator. Wherein the defrost exit conditions comprise at least any one or more of: the temperature detected by a defrosting sensor 15 corresponding to the target evaporator is greater than the target exit temperature, and the current defrosting time of the target evaporator is greater than the maximum defrosting time; the defrosting sensors 15(15-1 and 15-2) are arranged on the evaporators 12 and correspond to the evaporators 12 one by one (15-1 corresponds to 12-1, 15-2 corresponds to 12-2). Illustratively, the target exit temperature is a function of the actual, and is generally any value between 5 ℃ and 10 ℃; the maximum defrosting time period may be 60 minutes (for example only, and is not particularly limited). For example, the temperature of the target storage chamber may be detected by a temperature sensor provided in the target storage chamber. The target preset temperature needs to be determined according to the target storage compartment, and may be 3 ℃ (for example only, and particularly according to practice) if the target storage compartment is a refrigerating compartment (one of storage compartments), and may be-15 ℃ (for example only, and particularly according to practice) if the target storage compartment is a freezing compartment (one of storage compartments).
Thus, if the frosting amount of a certain evaporator (target evaporator) of the refrigerator is too large, after primary defrosting, the temperature of the storage chamber with the largest influence of defrosting of the target evaporator can be influenced in the refrigerator, secondary defrosting can be added when the defrosting has adverse influence on the freshness of food stored in the storage chamber (namely the temperature of the target storage chamber is lower than the target preset temperature), the time between two times of defrosting can be continuously adjusted according to actual conditions, the freshness of the food is ensured, the reliability of defrosting is improved, repeated accumulation of frosting is avoided, and the reliability of defrosting is improved.
Optionally, the frosting amount may be determined by comparing the actual defrosting time with the defrosting time (first preset time) obtained under a specific condition in the laboratory, so that the main control board 13 is specifically configured to: and if the current defrosting time of the target evaporator is longer than the first preset time, determining that the frosting amount of the target evaporator is an overlarge frosting amount. Of course, if the current defrosting time of the target evaporator is less than or equal to the first preset time, the main control board 13 determines that the frosting amount of the target evaporator is not too large. Illustratively, the first preset time may be 30min (for example only, as long as it is less than the maximum defrosting time period, and is not particularly limited herein).
In addition, it is generally considered that the frosting amount is an excessively large frosting amount if the time of actual defrosting is longer than twenty percent of the first preset time, so optionally, the main control panel 13 may be configured to: if the current defrosting time of the target evaporator is more than 120% of the first preset time length, determining that the frosting amount of the target evaporator is an excessive frosting amount, otherwise, determining that the frosting amount of the target evaporator is not the excessive frosting amount. For example, if the first preset time period is 30 minutes, and the current defrosting time of the target evaporator is 36 minutes or more, it may be determined that the current defrosting amount of the target evaporator is an excessive defrosting amount.
Since there are single-system refrigerators and two-system refrigerators in practice, since there is a difference in refrigeration control for the refrigerating chamber and the freezing chamber in both refrigerators, the target storage chamber may be either the refrigerating chamber or the freezing chamber in practice. The selection of the target storage room will be described below by taking as an example two kinds of refrigerators each including a refrigerating chamber and a freezing chamber.
Referring to fig. 2, the single system refrigerator 02 includes: a compressor 21, a condenser 22, a refrigerating evaporator 23, a freezing evaporator 24, and a capillary tube 25; the air outlet end of the compressor 21 is connected to the first end of the condenser 22, the second end of the condenser is connected to the first end of the capillary tube 25, the second end of the capillary tube 25 is connected to the first end of the refrigeration evaporator 23, the second end of the refrigeration evaporator 23 is connected to the first end of the freezing evaporator 24, and the second end of the freezing evaporator 24 is connected to the air inlet end of the compressor. It should be noted that the positions of the freezing evaporator 24 and the refrigerating evaporator 23 can be interchanged, and the positions are not particularly limited herein, depending on the actual situation.
The refrigeration system includes a compressor 21 for compressing the high-temperature low-pressure refrigerant gas absorbed from the freezing evaporator 24 and transmitting the compressed high-temperature high-pressure refrigerant gas to the condenser 22, the condenser 22 for transmitting the heat released from the high-temperature high-pressure refrigerant gas to a capillary tube 25 as a low-temperature high-pressure refrigerant liquid, the capillary tube for throttling and depressurizing the low-temperature high-pressure refrigerant liquid and transmitting the low-temperature low-pressure refrigerant liquid to the refrigerating evaporator 23, the refrigerating evaporator 23 for absorbing the heat of the refrigerating chamber with the low-temperature low-pressure refrigerant liquid and transmitting the heat to the freezing evaporator 24, and the freezing evaporator 24 for absorbing the heat of the freezing chamber with the low-temperature low-pressure refrigerant liquid and transmitting the high-temperature low. Thereby completing a refrigeration cycle.
As can be seen from fig. 2, the refrigerating chamber and the freezing chamber in the single-system refrigerator are communicated, and share one refrigerant for refrigeration, so that heat generated during defrosting can enter the refrigerating chamber and the freezing chamber, while the freezing chamber requires much lower temperature, so that the defrosting is more susceptible to the temperature generated by defrosting, and during defrosting, because the compressor is stopped, the temperature variation range is larger than that of the refrigerating chamber, so when the refrigerator is a single-system refrigerator and includes the freezing chamber and the refrigerating chamber, the target storage chamber in the foregoing technical solution is the freezing chamber.
Referring to fig. 3, the dual system refrigerator 03 includes: a compressor 31, a condenser 32, a refrigerating evaporator 33, a freezing evaporator 34, an electromagnetic valve 35, and first and second capillary tubes 36 and 37; wherein the connection relationship of the compressor 31, the condenser 32, the refrigerating evaporator 33, the freezing evaporator 34 and the first capillary tube 36 is similar to the connection relationship of the compressor 21, the condenser 22, the refrigerating evaporator 23, the freezing evaporator 24 and the capillary tube 25 in fig. 2; the difference is that a first end of solenoid valve 35 is connected to a second end of condenser 32, a second end of solenoid valve 35 is connected to a first end of first capillary tube 36, a third end of solenoid valve 35 is connected to a first end of second capillary tube 37, and a second end of second capillary tube 37 is connected to a first end of refrigeration evaporator 34. Wherein the positions of the refrigerating evaporator 33 and the freezing evaporator 34 can be interchanged.
The electromagnetic valve 35 is used for adjusting the conduction relation among the condenser 32, the first capillary tube 36 and the second capillary tube 37 under the control of the main control board, and the flow rate of the refrigerant under the conduction condition. Thus, the refrigerant may enter only the freezing evaporator 34 during circulation, or may enter the refrigerating evaporator 33 first and then enter the freezing evaporator, and when only the refrigerating evaporator 33 is required to operate mainly, the flow rate of the refrigerant may be reduced so that the refrigerant absorbing heat in the refrigerating evaporator 33 does not substantially absorb heat in the freezing evaporator, and therefore, the refrigeration of the freezing chamber and the refrigeration of the refrigerating chamber may not be greatly affected by each other.
As can be seen from fig. 3, in the dual system refrigerator, the refrigerating chamber and the freezing chamber have separate refrigerating lines, so when the target evaporator is the refrigerating evaporator 33 or the freezing evaporator 34, the target storage chamber may be a storage chamber corresponding to the target evaporator, i.e., the refrigerating chamber or the freezing chamber.
Of course, in practice, a refrigerator may have only one storage compartment or more than two storage compartments; when there is only one storage room, this storage room becomes a target storage room; when there are more than two reservoirs, then the selection of the target reservoir is the same as the analysis described above for the target reservoir.
Optionally, when the main control panel 13 determines that the frosting amount of the target evaporator is not the excessive frosting amount, the defrosting does not need to be added as soon as possible, and the flow of ending the normal defrosting needs to be performed until the target evaporator meets the defrosting entry condition again, and then the defrosting device 14 is controlled to defrost the target evaporator, so that the defrosting flow is performed again. So further optionally, the main control board 13 is further configured to: and if the frosting amount of the target evaporator is determined not to be the excessive frosting amount, controlling the defrosting device 14 to stop defrosting the target evaporator, and controlling the refrigerator to refrigerate the target storage chamber until the target evaporator meets the defrosting entering condition.
Illustratively, the defrost entry conditions include at least: the time for the target evaporator to work after the defrosting device stops defrosting the target evaporator (in practice, in a single-system refrigerator, the time for the compressor to operate after the defrosting device stops defrosting the target evaporator, and in a dual-system refrigerator, the time for the compressor to work when the pipeline passage is communicated between the condenser and the evaporator of the storage chamber corresponding to the target evaporator after the defrosting device stops defrosting the target evaporator) is longer than the second preset time.
In practice, during the refrigeration process of the refrigerator, the compressor and the evaporator do not work all the time, but work discontinuously as long as the temperature in the refrigerator is ensured to be maintained at a certain temperature or a certain temperature range; in the single-system refrigerator, if a user opens any door body of the refrigerator after the temperature in a first storage chamber (any storage chamber in the refrigerator) of the refrigerator is stable (the corresponding evaporator stops working), so that outside hot air enters a second storage chamber (which can be the same as or different from the first storage chamber) corresponding to the opened door body, a main control board can control a compressor of the refrigerator to further refrigerate because the temperature in the second storage chamber is detected to rise, so that the evaporators corresponding to the first storage chamber and the second storage chamber work, the working frequency of the evaporator corresponding to the first storage chamber can exceed a normal value, and the evaporator corresponding to the first storage chamber is more frosted due to frequent repeated refrigeration, if the evaporator corresponding to the first storage chamber is defrosted according to the original theoretical defrosting cycle, the frosting amount of the evaporator is increased during defrosting. In the dual-system refrigerator, if a user opens a specific door of the refrigerator (as shown in fig. 3, when the first storage chamber is a refrigerating chamber corresponding to a refrigerating evaporator 33, the specific door is a door of the refrigerating chamber, and when the first storage chamber is a freezing chamber corresponding to a freezing evaporator 34, the specific door is a door of the refrigerating chamber and a door of the freezing chamber), the main control board controls the operation of the electromagnetic valve and the compressor by detecting the temperature rise in the first storage chamber, so as to further enable the evaporator corresponding to the first storage chamber to operate, the operating frequency of the evaporator corresponding to the first storage chamber also exceeds a normal value, and frequent multiple refrigeration enables the evaporator corresponding to the first storage chamber to frost more, if the evaporator corresponding to the first storage chamber is defrosted according to an original theoretical defrosting cycle, this may lead to a situation where the evaporator is frosted more during defrosting.
Therefore, when the influence of the opening and closing of the door of the refrigerator on the frosting condition of the evaporator of the refrigerator is not considered, the second preset time is the theoretical defrosting period (for example, 10h) detected by the refrigerator under the specific environment in the experiment. When the influence of the opening and closing of the refrigerator on the frosting condition of the refrigerator evaporator is considered, the second preset time length is the difference value obtained by subtracting the product of the unit time length and the target door opening times from the third preset time length. At the moment, the third preset time is a theoretical defrosting period (for example, 10 hours) detected by the refrigerator in a specific environment in an experiment; the second preset time can be regarded as the actual defrosting period; the unit time length can be an influence value of each door opening on the defrosting period obtained by researchers in a laboratory; the target door opening times are the times of opening of the target door body after the defrosting device stops defrosting the target evaporator. When the refrigerator is a single system, the door opening times of the target door body are the total opening times of all door bodies of the refrigerator. When the refrigerator is a dual system, if the target evaporator can not receive the refrigerant flowing out from other evaporators, the opening times of the target door body are the opening times of the door body of the storage chamber corresponding to the target evaporator; if the target evaporator needs to receive the refrigerant flowing out from other evaporators, the opening times of the target door body are the door body of the storage chamber corresponding to the target evaporator and the total opening times of the door bodies of the storage chambers corresponding to the other evaporators.
In addition, in the foregoing embodiment, the main control board controls the refrigerator to defrost the target evaporator, and may control the compressor to operate in the single-system refrigerator, and may control the compressor to operate and simultaneously control the electromagnetic valve to open the corresponding pipeline passage in the dual-system refrigerator. The method is not particularly limited, depending on the actual application.
The refrigerator that this application embodiment provided, because this refrigerator includes: at least one storage compartment; the evaporator and the main control board correspond to the storage chamber; the master control board is configured to: when the defrosting of the target evaporator by the defrosting device of the refrigerator meets a defrosting exit condition, if the frosting amount of the target evaporator is determined to be an overlarge frosting amount, the defrosting device is controlled to stop defrosting the target evaporator, and the refrigerator is controlled to refrigerate the target storage chamber; when the temperature of the target storage chamber is lower than the target preset temperature, controlling the defrosting device to defrost the target evaporator; the target evaporator is any one of evaporators, and the target storage chamber is at least one storage chamber of which the temperature is most affected by defrosting of the target evaporator. When defrosting an evaporator (target evaporator) of a refrigerator, when a defrosting device of the refrigerator is used for defrosting the target evaporator and meets a defrosting exit condition, a main control panel firstly judges whether the current defrosting amount of the target evaporator is an excessive defrosting amount, if the current defrosting amount is the excessive defrosting amount, the situation that the current defrosting is insufficient is indicated, and then defrosting needs to be added once again as soon as possible to ensure that the frosting on the target evaporator cannot be accumulated too much to influence the performance in order to achieve sufficient defrosting. However, the additional defrosting cannot come too fast or too slow, because if the additional defrosting comes too fast, the freshness of food in the refrigerator is reduced due to excessive heat of the defrosting twice, and if the additional defrosting comes too slow, the defrosting is not cleaned and new frosting is generated again, so that the frosting is more difficult to clean. Therefore, in order to ensure the freshness of food and defrost as soon as possible, at the moment, after the main control board controls the defrosting device to stop defrosting the target evaporator, the main control board controls the refrigerator to refrigerate the target storage chamber (the storage chamber with the temperature most affected by the defrosting of the target evaporator) and simultaneously judges whether the temperature of the target storage chamber is lower than or not, and the main control board is a target preset temperature which can ensure that the defrosting process does not affect the freshness of the food in the target storage chamber; when the main control board determines that the temperature of the target storage chamber is lower than the target preset temperature, the defrosting device is controlled to defrost the target evaporator again, and then the defrosting circulation process is continued. Therefore, the time between two times of defrosting can be continuously adjusted according to the actual situation, so that the freshness of food is ensured, the defrosting reliability is improved, and the repeated accumulation of frosting is avoided. Therefore, the technical scheme provided by the embodiment of the application can improve the reliability of defrosting of the refrigerator while ensuring the freshness of food in the refrigerator.
Based on the refrigerator provided in the foregoing embodiment, referring to fig. 4, the present application further provides a control method of a refrigerator, which is applied to a main control board of the refrigerator, and includes 401:
401. and judging whether the defrosting of the target evaporator by the defrosting device of the refrigerator meets a defrosting exit condition or not.
When determining that the defrosting of the target evaporator by the defrosting device of the refrigerator meets the defrosting exit condition, executing 402; when it is determined that the defrosting of the target evaporator by the defrosting device of the refrigerator does not satisfy the defrosting exit condition, 403 is performed. The target evaporator is any one of evaporators of refrigerators.
Illustratively, the defrost exit condition includes at least any one or more of: the temperature detected by a defrosting sensor corresponding to the target evaporator is greater than the target exit temperature, and the current defrosting time of the target evaporator is greater than the maximum defrosting time; the defrosting sensors are arranged on the evaporators and correspond to the evaporators one by one.
402. It is judged whether or not the frosting amount of the target evaporator is an excessive frosting amount.
When the frosting amount of the target evaporator is determined to be an excessive frosting amount, executing 404; when it is determined that the amount of frost of the target evaporator is not an excessively large amount of frost, 405 is performed.
In practice, the frosting amount can be determined by comparing the actual defrosting time with the defrosting time (first preset time) obtained under a specific condition in a laboratory, so that optionally, as shown in fig. 5, 402 specifically includes: and judging whether the current defrosting time of the target evaporator is longer than a first preset time.
When the current defrosting time of the target evaporator is determined to be longer than a first preset time length, determining that the frosting amount of the target evaporator is an overlarge frosting amount, and executing 404; when it is determined that the current defrosting time of the target evaporator is not greater than the first preset time length, it is determined that the frosting amount of the target evaporator is not an excessively large frosting amount, and 405 is performed.
403. And controlling the defrosting device to defrost the target evaporator.
After 403 execution 401 is performed.
404. And controlling the defrosting device to stop defrosting the target evaporator, and controlling the refrigerator to refrigerate the target storage chamber.
404 and 406 is executed.
405. And controlling the defrosting device to stop defrosting the target evaporator, and controlling the refrigerator to refrigerate the target storage chamber.
407 is performed after 405.
406. And judging whether the temperature of the target storage chamber is less than the target preset temperature.
When the temperature of the target storage room is determined to be less than the target preset temperature, 403 is executed; when it is determined that the temperature of the target storage compartment is not less than the target preset temperature, 404 is performed. The target storage chamber is a storage chamber in which the temperature is most affected by the defrosting of the target evaporator in at least one storage chamber in the refrigerator.
407. And judging whether the target evaporator meets defrosting entering conditions or not.
When it is determined that the target evaporator satisfies the defrosting entry condition, execution 403; when it is determined that the target evaporator does not satisfy the defrosting entry condition, 405 is performed.
Illustratively, the defrosting entry condition includes at least: and the time of the target evaporator working after the defrosting device stops defrosting the target evaporator is longer than a second preset time. When the influence of the opening and closing of the refrigerator on the frosting condition of the evaporator of the refrigerator is not considered, the second preset time length is a theoretical defrosting period (for example, 10h) detected by the refrigerator under a specific environment in an experiment. When the influence of the opening and closing of the refrigerator on the frosting condition of the refrigerator evaporator is considered, the second preset time length is the difference value obtained by subtracting the product of the unit time length and the target door opening times from the third preset time length. At the moment, the third preset time is a theoretical defrosting period (for example, 10 hours) detected by the refrigerator in a specific environment in an experiment; the second preset time can be regarded as the actual defrosting period; the unit time length can be an influence value of each door opening on the defrosting period obtained by researchers in a laboratory; the target door opening times are the times of opening of the target door body after the defrosting device stops defrosting the target evaporator. When the refrigerator is a single system, the door opening times of the target door body are the total opening times of all door bodies of the refrigerator. When the refrigerator is a dual system, if the target evaporator can not receive the refrigerant flowing out from other evaporators, the opening times of the target door body are the opening times of the door body of the storage chamber corresponding to the target evaporator; if the target evaporator needs to receive the refrigerant flowing out from other evaporators, the opening times of the target door body are the door body of the storage chamber corresponding to the target evaporator and the total opening times of the door bodies of the storage chambers corresponding to the other evaporators.
In the control method for the refrigerator provided by the embodiment of the application, when the refrigerator is defrosted, when the defrosting device of the refrigerator defrostes a certain evaporator (a target evaporator) to meet a defrosting exit condition, the main control board firstly judges whether the current frosting amount of the target evaporator is an excessive frosting amount, if the current frosting amount is the excessive frosting amount, the current frosting amount is possibly insufficient, and then in order to fully defrost, the defrosting needs to be added again as soon as possible to ensure that the frosting on the target evaporator does not accumulate too much to influence the performance. However, the additional defrosting cannot come too fast or too slow, because if the additional defrosting comes too fast, the freshness of food in the refrigerator is reduced due to excessive heat of the defrosting twice, and if the additional defrosting comes too slow, the defrosting is not cleaned and new frosting is generated again, so that the frosting is more difficult to clean. Therefore, in order to ensure the freshness of food and defrost as soon as possible, at the moment, after the main control board controls the defrosting device to stop defrosting the target evaporator, the main control board controls the refrigerator to refrigerate the target storage chamber (the storage chamber with the temperature most affected by the defrosting of the target evaporator) and simultaneously judges whether the temperature of the target storage chamber is lower than or not, and the main control board is a target preset temperature which can ensure that the defrosting process does not affect the freshness of the food in the target storage chamber; when the main control board determines that the temperature of the target storage chamber is lower than the target preset temperature, the defrosting device is controlled to defrost the target evaporator again, and then the defrosting circulation process is continued. Therefore, the time between two times of defrosting can be continuously adjusted according to the actual situation, so that the freshness of food is ensured, the defrosting reliability is improved, and the repeated accumulation of frosting is avoided. To sum up, the technical scheme that this application embodiment provided can improve the reliability that the refrigerator defrosted when guaranteeing food freshness in the refrigerator.
The present application also provides a possible structure of the main control board 13 of the refrigerator, which is shown in fig. 6, and includes: a decision block 131 and a control block 132. Wherein, the determining module 131 is configured to perform the steps 401, 402, 406, and 407 in the foregoing embodiment; the control module is used for executing the steps 403, 404 and 405 in the previous embodiment.
The beneficial effects of the main control board of the refrigerator provided by the embodiment of the application can refer to the corresponding beneficial effects of the refrigerator in the embodiment, and are not repeated here.
In case of adopting an integrated module, the main control panel of the refrigerator includes: the device comprises a storage unit, a processing unit and an interface unit. The processing unit is used for controlling and managing, for example, the processing unit is used for supporting the main control board to execute the steps executed by the judging module 131 and the control module 132 in the foregoing embodiments; the interface unit is used for supporting the information interaction of the main control board and other equipment, such as the interaction with a defrosting sensor, a defrosting device, an electromagnetic valve, a temperature sensor in each storage chamber and a compressor. And the storage unit is used for storing the program codes and the data of the main control board.
For example, the processing unit is a processor, the storage unit is a memory, and the interface unit is a communication interface. Referring to fig. 7, an embodiment of the present application further provides another main control board of a refrigerator, including a memory 41, a processor 42, a bus 43, and a communication interface 44; the memory 41 is used for storing computer execution instructions, and the processor 42 is connected with the memory 41 through a bus 43; when the main control board of the refrigerator is operated, the processor 42 executes the computer execution instructions stored in the memory 41 to cause the main control board of the refrigerator to perform the defrosting method of the refrigerator as provided in the above embodiments.
In particular implementations, processor 42(42-1 and 42-2) may include one or more CPUs, such as CPU0 and CPU1 shown in FIG. 7, for example, as one embodiment. And as an example, the main control board of the refrigerator may include a plurality of processors 42, such as the processor 42-1 and the processor 42-2 shown in fig. 7. Each of the processors 42 may be a Single-core processor (Single-CPU) or a Multi-core processor (Multi-CPU). Processor 42 may refer herein to one or more devices, circuits, and/or processing cores that process data (e.g., computer program instructions).
The Memory 41 may be a Read-Only Memory 41 (ROM) or other types of static storage devices that can store static information and instructions, a Random Access Memory (RAM) or other types of dynamic storage devices that can store information and instructions, an Electrically Erasable Programmable Read-Only Memory (EEPROM), a compact disc Read-Only Memory (CD-ROM) or other optical disc storage, optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), a magnetic disc storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such. The memory 41 may be self-contained and coupled to the processor 42 via a bus 43. The memory 41 may also be integrated with the processor 42.
In a specific implementation, the memory 41 is used for storing data in the present application and computer-executable instructions corresponding to software programs for executing the present application. The processor 42 may perform various functions of the main control board of the refrigerator by running or executing software programs stored in the memory 41 and calling data stored in the memory 41.
The communication interface 44 is any device such as a transceiver for communicating with other devices or communication networks, such as a control system, a Radio Access Network (RAN), a Wireless Local Area Network (WLAN), and the like. The communication interface 44 may include a receiving unit implementing a receiving function and a transmitting unit implementing a transmitting function.
The bus 43 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus 43 may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 7, but this is not intended to represent only one bus or type of bus.
The embodiment of the present application also provides a computer storage medium, which includes computer-executable instructions, and when the computer-executable instructions are run on a computer, the computer is enabled to execute the defrosting method of the refrigerator provided in the above embodiment.
The embodiment of the present application further provides a computer program, which can be directly loaded into the memory and contains a software code, and after the computer program is loaded and executed by the computer, the defrosting method of the refrigerator provided by the above embodiment can be implemented.
Those skilled in the art will recognize that in one or more of the examples described above, the functions described herein may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
Through the above description of the embodiments, it is clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules or units is only one logical function division, and there may be other division ways in actual implementation. For example, various elements or components may be combined or may be integrated into another device, or some features may be omitted, or not implemented. 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, devices or units, and may be in an electrical, mechanical or other form. Units described as separate parts may or may not be physically separate, and parts displayed as units may be one physical unit or a plurality of physical units, may be located in one place, or may be distributed to a plurality of different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit. 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 readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially or partially contributed to by the prior art, or all or part of the technical solutions may be embodied in the form of a software product, where the software product is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, or the like) or a processor (processor) to execute all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A refrigerator, characterized by comprising:
at least one storage compartment;
an evaporator corresponding to the storage chamber;
a master control board configured to:
when the defrosting of a target evaporator by a defrosting device of the refrigerator meets a defrosting exit condition, if the current defrosting amount of the target evaporator is determined to be an overlarge defrosting amount, controlling the defrosting device to stop defrosting the target evaporator and controlling the refrigerator to refrigerate a target storage chamber; when the temperature of the target storage chamber is lower than a target preset temperature, controlling the defrosting device to defrost the target evaporator; the target evaporator is any one of the evaporators, and the target storage chamber is a storage chamber of the at least one storage chamber, the temperature of which is most affected by defrosting of the target evaporator.
2. The refrigerator of claim 1, wherein the main control board body is configured to:
and if the current defrosting time of the target evaporator is longer than a first preset time length, determining that the frosting amount of the target evaporator is an overlarge frosting amount.
3. The refrigerator of claim 2, wherein the main control board is further configured to:
when the defrosting of a target evaporator by the defrosting device meets a defrosting exit condition, if the current defrosting time of the target evaporator is less than or equal to a first preset time length, determining that the frosting amount of the target evaporator is not an excessive frosting amount;
and if the frosting amount of the target evaporator is determined not to be the excessive frosting amount, controlling the defrosting device to stop defrosting the target evaporator, and controlling the refrigerator to refrigerate the target storage chamber until the target evaporator meets the defrosting entering condition.
4. The refrigerator of claim 3, wherein the defrosting entry condition includes at least: and the time of the target evaporator working after the defrosting device stops defrosting the target evaporator is longer than a second preset time.
5. The refrigerator according to claim 1, further comprising a defrosting sensor provided on the evaporator for detecting a temperature of the evaporator;
the defrost exit conditions include at least any one or more of: the temperature detected by a defrosting sensor corresponding to the target evaporator is greater than the target exit temperature, and the current defrosting time of the target evaporator is greater than the maximum defrosting time.
6. The refrigerator according to claim 1,
when the refrigerator is a single system refrigerator and at least one storage compartment of the refrigerator includes a freezing compartment and a refrigerating compartment, the target storage compartment is a freezing compartment;
and when the refrigerator is a dual-system refrigerator, the target storage chamber is a storage chamber corresponding to the target evaporator.
7. A defrosting method of a refrigerator according to any one of claims 1 to 6, applied to a main control panel of the refrigerator, comprising:
when the defrosting of a target evaporator by a defrosting device of the refrigerator meets a defrosting exit condition, if the frosting amount of the target evaporator is determined to be an excessive frosting amount, controlling the defrosting device to stop defrosting the target evaporator and controlling the refrigerator to refrigerate a target storage chamber;
when the temperature of the target storage chamber is lower than a target preset temperature, controlling the defrosting device to defrost the target evaporator;
the target evaporator is any one of the evaporators, and the target storage chamber is a storage chamber of the at least one storage chamber, the temperature of which is most affected by defrosting of the target evaporator.
8. The defrosting method of a refrigerator according to claim 7, wherein the determining that the frosting amount of the target evaporator is an excessive frosting amount comprises:
and if the current defrosting time of the target evaporator is longer than a first preset time length, determining that the frosting amount of the target evaporator is an overlarge frosting amount.
9. The defrosting method of a refrigerator according to claim 8, further comprising:
when the defrosting of a target evaporator by the defrosting device meets a defrosting exit condition, if the current defrosting time of the target evaporator is less than or equal to a first preset time length, determining that the frosting amount of the target evaporator is not an excessive frosting amount;
and if the frosting amount of the target evaporator is determined not to be the excessive frosting amount, controlling the defrosting device to stop defrosting the target evaporator, and controlling the refrigerator to refrigerate the target storage chamber until the target evaporator meets the defrosting entering condition.
10. The main control board of the refrigerator is characterized by comprising a memory, a processor, a bus and a communication interface; the memory is used for storing computer execution instructions, and the processor is connected with the memory through the bus; when the main control board of the refrigerator is operated, the processor executes the computer-executable instructions stored by the memory to cause the main control board of the refrigerator to perform the defrosting method of the refrigerator according to any one of claims 7 to 9.
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