CN113915881A - Refrigerator and defrosting control method thereof - Google Patents

Refrigerator and defrosting control method thereof Download PDF

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Publication number
CN113915881A
CN113915881A CN202110381408.8A CN202110381408A CN113915881A CN 113915881 A CN113915881 A CN 113915881A CN 202110381408 A CN202110381408 A CN 202110381408A CN 113915881 A CN113915881 A CN 113915881A
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China
Prior art keywords
defrosting
time
refrigerator
opening
preset
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Granted
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CN202110381408.8A
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Chinese (zh)
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CN113915881B (en
Inventor
宋锋毅
赵兴
孙彬
刘洋
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Hisense Shandong Refrigerator Co Ltd
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Hisense Shandong Refrigerator Co Ltd
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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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/005—Mounting of control devices
    • 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
    • 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 discloses a refrigerator and a defrosting control method thereof, wherein the refrigerator comprises a refrigerator body, a door body, a defrosting device, a door switch detection device and a controller, wherein the controller is configured to: when the freezing chamber is in a non-defrosting state, acquiring state parameters of the refrigerator in the current refrigeration cycle; the state parameters comprise the accumulated opening times of the door body and the running time of the whole machine; judging whether the accumulated opening times is larger than a preset door opening time threshold, if so, compensating the predicted defrosting interval time according to the defrosting interval compensation value to obtain the current defrosting interval time, and if not, obtaining the predicted defrosting interval time as the current defrosting interval time; and judging whether the running time of the whole machine reaches the current defrosting interval time, if so, controlling the defrosting device to execute defrosting operation. By adopting the embodiment of the invention, the defrosting interval time can be adjusted according to the condition that a user opens the door body of the freezing chamber, so that the accuracy of defrosting control of the refrigerator and the refrigerating effect of the refrigerator are improved.

Description

Refrigerator and defrosting control method thereof
Technical Field
The invention relates to the technical field of refrigerators, in particular to a refrigerator and a defrosting control method thereof.
Background
Because the refrigerator is at the refrigeration in-process, the incasement moisture can condense into the frost layer on the evaporimeter surface, hinders the heat exchange on evaporimeter surface to influence the refrigeration effect, consequently, for the refrigeration effect of better assurance refrigerator, the refrigerator on the market generally disposes the defrosting function.
At present, most refrigerators adopt a method of regularly defrosting to solve the problem of defrosting, but because the use habits of users and the environment difference of various regions are large, if the times of opening a freezing door by the users are large, the cold quantity in the freezing chamber can be greatly dissipated, so that the temperature in the freezing chamber rises, and under the condition that the temperature in the freezing chamber rises, if defrosting is still controlled according to the original defrosting interval time, the temperature in the freezing chamber after defrosting can be easily caused to be too high, so that the refrigerating effect is influenced, and in addition, because the power consumption during defrosting is far greater than the power consumption during normal refrigeration, unnecessary energy consumption can be consumed.
Disclosure of Invention
The embodiment of the invention provides a refrigerator and a defrosting control method thereof, which can adjust defrosting interval time according to the condition that a user opens a door body of a freezing chamber, thereby improving the accuracy of defrosting control of the refrigerator, improving the refrigerating effect of the refrigerator and reducing unnecessary energy consumption.
A refrigerator provided in a first embodiment of the present invention includes:
the refrigerator comprises a refrigerator body, a refrigerating chamber and a refrigerating chamber, wherein the refrigerator body is internally provided with the refrigerating chamber;
the door body is arranged at the opening of the freezing chamber;
a defrosting device for defrosting the freezing chamber when a defrosting operation is performed;
a door opening/closing detection device for detecting an opening/closing operation of the door body; and the number of the first and second groups,
a controller configured to:
when the freezing chamber is in a non-defrosting state, acquiring state parameters of the refrigerator in a current refrigerating cycle in real time; the state parameters comprise the accumulated opening times of the door body and the running time of the whole machine;
judging whether the accumulated opening times is larger than a preset door opening time threshold or not, if so, acquiring a predicted defrosting interval time and a defrosting interval compensation value, and compensating the predicted defrosting interval time according to the defrosting interval compensation value to obtain a current defrosting interval time, otherwise, acquiring the predicted defrosting interval time as the current defrosting interval time;
and judging whether the running time of the whole machine reaches the current defrosting interval time, if so, controlling the defrosting device to execute defrosting operation, and controlling the defrosting device to stop defrosting operation until preset defrosting stop conditions are met.
In the refrigerator provided in the first embodiment of the present invention, the use state of the user is determined by obtaining the state parameters of the refrigerator, and the accuracy of defrosting control is improved by reasonably adjusting the defrosting interval time of the refrigerator under the condition that the number of times of opening the freezing door by the user is large and the cooling capacity in the freezing chamber is greatly dissipated, so as to effectively improve the refrigeration effect of the refrigerator and reduce unnecessary energy consumption.
In the refrigerator provided in the second embodiment of the present invention, the door opening and closing detection device is further configured to detect a time length that the door body is opened each time; the state parameters further include the time length of each opening of the door body;
the estimated defrosting interval time is equal to a difference obtained by subtracting a product of a first preset defrosting time multiple and the cumulative time of N times of opening of the door body from a preset fixed defrosting period; and N is the accumulated opening times.
In a third embodiment of the present invention, there is provided a refrigerator, wherein the first preset defrosting time multiple is 120.
In the refrigerator provided in the fourth embodiment of the present invention, the door switch detecting device is further configured to detect a time length that the door body is opened each time; the current state parameter further includes the time length of each opening of the door body;
the defrosting interval compensation value is equal to the product of the accumulated time length of the door body after m times of opening and a second preset defrosting time multiple;
and N is the accumulated opening times, and N is the threshold of the opening times.
In the refrigerator provided in the fifth embodiment of the present invention, the second preset defrosting time multiple is equal to 60.
In the refrigerator provided in the fifth embodiment of the present invention, since the accumulated opening times of the door body is greater than the preset threshold of the opening times, it indicates that the opening times of the user is large, and in order to reduce the defrosting frequency and prolong the defrosting period, the second preset defrosting time multiple needs to be smaller than the first preset defrosting time multiple, so as to improve the accuracy of defrosting control by reasonably adjusting the defrosting interval time of the refrigerator, thereby effectively improving the refrigeration effect of the refrigerator and reducing unnecessary energy consumption.
A defrosting control method of a refrigerator provided in a sixth embodiment of the present invention includes:
when a freezing chamber of a refrigerator is in a non-defrosting state, acquiring state parameters of the refrigerator in a current refrigerating cycle in real time; the state parameters comprise the running time of the whole machine and the accumulated opening times of a door body of a freezing chamber;
judging whether the accumulated opening times is larger than a preset door opening time threshold or not, if so, acquiring a predicted defrosting interval time and a defrosting interval compensation value, and compensating the predicted defrosting interval time according to the defrosting interval compensation value to obtain a current defrosting interval time, otherwise, acquiring the predicted defrosting interval time as the current defrosting interval time;
and judging whether the running time of the whole machine reaches the current defrosting interval time, if so, controlling a defrosting device of the refrigerator to execute defrosting operation, and controlling the defrosting device to stop defrosting operation until preset defrosting stop conditions are met.
In the defrosting control method for the refrigerator provided in the sixth embodiment of the present invention, the using state of the user is determined by obtaining the state parameters of the refrigerator, and the accuracy of defrosting control is improved by reasonably adjusting the defrosting interval time of the refrigerator under the condition that the number of times of opening the freezing door by the user is large and the cooling capacity in the freezing chamber is greatly dissipated, so as to effectively improve the refrigerating effect of the refrigerator and reduce unnecessary energy consumption.
In a defrosting control method of a refrigerator provided in a seventh embodiment of the present invention, the state parameter further includes a time length of each time the door body is opened;
the estimated defrosting interval time is equal to a difference obtained by subtracting a product of a first preset defrosting time multiple and the cumulative time of N times of opening of the door body from a preset fixed defrosting period; and N is the accumulated opening times.
In a defrosting control method of a refrigerator according to an eighth embodiment of the present invention, the first preset defrosting time multiple is 120.
In the defrosting control method of a refrigerator provided by the ninth embodiment of the present invention, the current state parameter further includes a time length of each time the door body is opened;
the defrosting interval compensation value is equal to the product of the accumulated time length of the door body after m times of opening and a second preset defrosting time multiple;
and N is the accumulated opening times, and N is the threshold of the opening times.
A tenth embodiment of the present invention provides a defrosting control method for a refrigerator, wherein the second preset defrosting time multiple is equal to 60.
In the defrosting control method for the refrigerator provided in the tenth embodiment of the present invention, since the accumulated opening times of the door body is greater than the preset threshold of the opening times, it indicates that the opening times of the user are more, and in order to reduce the defrosting frequency and prolong the defrosting period, the second preset defrosting time multiple needs to be smaller than the first preset defrosting time multiple, so as to improve the accuracy of defrosting control by reasonably adjusting the defrosting interval time of the refrigerator, thereby effectively improving the refrigeration effect of the refrigerator and reducing unnecessary energy consumption.
Compared with the prior art, the embodiment of the invention provides a refrigerator and a defrosting control method thereof, which are characterized in that when a freezing chamber of the refrigerator is in a non-defrosting state, state parameters of the refrigerator in a current refrigerating cycle are obtained in real time, wherein the state parameters comprise accumulated opening times of a door body of the freezing chamber and whole machine running time, whether the accumulated opening times are larger than a preset door opening time threshold value is judged, if yes, estimated defrosting interval time and a defrosting interval compensation value are obtained, the estimated defrosting interval time is compensated according to the defrosting interval compensation value to obtain current defrosting interval time, if not, the estimated defrosting interval time is obtained as the current defrosting interval time, whether the whole machine running time reaches the current defrosting interval time is judged, if yes, a defrosting device of the refrigerator is controlled to perform defrosting operation, and controlling the defrosting device to stop defrosting operation until a preset defrosting stop condition is met. According to the refrigerator and the defrosting control method thereof provided by the embodiment of the invention, the defrosting interval time can be adjusted according to the condition that a user opens the door body of the freezing chamber, and the defrosting interval time is correspondingly prolonged when the door opening times of the user are excessive, so that the refrigerator is controlled to delay defrosting, the accuracy of defrosting control of the refrigerator is improved, the problem that the temperature in the frosted freezing chamber is too high due to the fact that defrosting is controlled according to the original defrosting interval time when the door opening times of the user are excessive can be effectively solved, the refrigerating effect of the refrigerator is improved, the use experience of the user is improved, and unnecessary energy consumption is reduced.
Drawings
Fig. 1 is a flowchart illustrating an operation of a controller in a refrigerator according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of a defrosting control method for a refrigerator according to an embodiment of the present invention;
fig. 4 is a schematic flow chart of another defrosting control method for a refrigerator according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, and not all 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 invention.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Referring to fig. 1, a flowchart of an operation of a controller in a refrigerator according to an embodiment of the present invention is shown.
The refrigerator provided in the embodiment of the present invention includes:
the refrigerator comprises a refrigerator body, a refrigerating chamber and a refrigerating chamber, wherein the refrigerator body is internally provided with the refrigerating chamber;
the door body is arranged at the opening of the freezing chamber;
a defrosting device for defrosting the freezing chamber when a defrosting operation is performed;
a door opening/closing detection device for detecting an opening/closing operation of the door body; and the number of the first and second groups,
a controller configured to:
s11, when the freezing chamber is in a non-defrosting state, acquiring the state parameters of the refrigerator in the current refrigeration cycle in real time; the state parameters comprise the whole machine running time of the refrigerator and the accumulated opening times of the door body;
s12, judging whether the accumulated opening times are larger than a preset door opening time threshold value or not, if so, acquiring a predicted defrosting interval time and a defrosting interval compensation value, and compensating the predicted defrosting interval time according to the defrosting interval compensation value to obtain the current defrosting interval time, otherwise, acquiring the predicted defrosting interval time as the current defrosting interval time;
and S13, judging whether the running time of the whole machine reaches the current defrosting interval time, if so, controlling the defrosting device to execute defrosting operation, and controlling the defrosting device to stop defrosting operation until a preset defrosting stop condition is met.
It should be noted that, if the freezing chamber is in a non-defrosting state, it is indicated that the freezing chamber enters an ice making cycle, the current ice making cycle refers to a time period from the last defrosting of the freezing chamber to the next defrosting, the whole machine operation time of the refrigerator in the current refrigeration cycle refers to the accumulated operation time of the refrigerator between the last defrosting of the refrigerator and the current time, and the accumulated opening times of the door body in the current refrigeration cycle refers to the accumulated opening times of the door body between the last defrosting of the refrigerator and the current time.
For example, the predicted defrosting interval time and the defrosting interval compensation value may be set according to actual requirements or experimental results, and are not limited herein.
For example, in the step S13, if it is determined that the operation time of the complete machine reaches the current defrosting interval time, the defrosting device may be controlled to perform the defrosting operation and simultaneously control the freezing chamber to stop cooling until a preset defrosting stop condition is met, and the defrosting device is controlled to stop the defrosting operation and control the freezing chamber to recover cooling, so as to reduce energy consumption of the refrigerator.
It is understood that the controller may continuously perform the steps S11 to S13 when the freezing compartment is in the non-defrosting state, so as to realize the cycle control of defrosting the refrigerator.
Compared with the prior art, the embodiment of the invention provides a refrigerator, which is characterized in that when a freezing chamber of the refrigerator is in a non-defrosting state, state parameters of the refrigerator in a current refrigerating cycle are obtained in real time, wherein the state parameters comprise accumulated opening times of a door body of the freezing chamber and running time of the whole refrigerator, whether the accumulated opening times are larger than a preset door opening time threshold value is judged, if yes, estimated defrosting interval time and a defrosting interval compensation value are obtained, the estimated defrosting interval time is compensated according to the defrosting interval compensation value to obtain current defrosting interval time, if not, the estimated defrosting interval time is obtained as the current defrosting interval time, whether the running time of the whole refrigerator reaches the current defrosting interval time is judged, if yes, a defrosting device of the refrigerator is controlled to perform defrosting operation, and controlling the defrosting device to stop defrosting operation until a preset defrosting stop condition is met. According to the refrigerator and the defrosting control method thereof provided by the embodiment of the invention, the defrosting interval time can be adjusted according to the condition that a user opens the door body of the freezing chamber, and the defrosting interval time is correspondingly prolonged when the door opening times of the user are excessive, so that the refrigerator is controlled to delay defrosting, the accuracy of defrosting control of the refrigerator is improved, the problem that the temperature in the frosted freezing chamber is too high due to the fact that defrosting is controlled according to the original defrosting interval time when the door opening times of the user are excessive can be effectively solved, the refrigerating effect of the refrigerator is improved, the use experience of the user is improved, and unnecessary energy consumption is reduced.
For example, the refrigerator is a single-system three-door refrigerator, and referring to a structural schematic diagram of the refrigerator shown in fig. 2, the refrigerator 1 is composed of a refrigerating chamber 11, a wild vegetable chamber 12 and a freezing chamber 13, and a variable temperature drawer is arranged in the refrigerating chamber 11 to realize independent temperature control. And under the more condition of user's number of times of opening the door, because the time of opening the door of refrigerator 1 is longer, will lead to changing the interval of frost and reduce, and in the in-process of freezing 13 frost, the heat of heater can transmit to in the freezing chamber through the wind gap, lead to food softening in the freezing chamber 13, heater operating time is about 30min when changing the frost at every turn, later shut down and drip 10min, high frequency is again pulled warm to the trip point 90min, totally about 130min, if the user opens the door during this period, can obviously feel the temperature of freezing chamber higher, bring the not good experience of refrigeration effect for the user.
It is worth explaining that the defrosting interval time of the refrigerator can be reasonably adjusted according to different using conditions of the refrigerator by a user, so that the accuracy of defrosting control of the refrigerator and the refrigerating effect of the refrigerator are improved, the using experience of the user is improved, and unnecessary energy consumption is reduced.
As one optional implementation, the mode of acquiring the state parameter of the refrigerator in the current refrigeration cycle specifically includes:
when a user performs door opening and closing operations, the door opening and closing detection device can transmit detected signals of door opening and closing actions to the main control board of the refrigerator, and the main control board can record state parameters of the freezing chamber in the current refrigeration cycle.
It is worth explaining that the actual use state of the refrigerator is judged by obtaining the state parameters of the refrigerator in the current refrigeration cycle, the defrosting interval time of the freezing chamber can be reasonably adjusted, and the refrigeration effect of the refrigerator is effectively improved.
As one optional embodiment, the door switch detection device is further configured to detect a time length of each opening of the door body; the state parameters further include the time length of each opening of the door body;
the estimated defrosting interval time is equal to a difference obtained by subtracting a product of a first preset defrosting time multiple and the cumulative time of N times of opening of the door body from a preset fixed defrosting period; and N is the accumulated opening times.
Illustratively, the predicted interval between defrost time X1The expression of (a) is:
X1＝Y-b1tn
wherein Y is the preset fixed frost period, b1For the first preset defrosting time multiple, when the accumulated opening times is greater than a preset door opening time threshold value, tnThe accumulated time length of the previous n times of opening of the door body is n, the n is the threshold value of the opening times, and when the accumulated opening times is smaller than the preset threshold value of the opening times, t isnAnd the accumulated door opening time of the door body is obtained.
As one optional embodiment, the first preset defrosting time multiple b1Is 120.
It is worth to be noted that when the accumulated opening times is smaller than the preset opening time threshold, it indicates that the opening times of the user is small, the normal defrosting operation can be performed for freezing, and at this time, the accumulated time of opening the door is accumulated at a speed 120 times.
As one optional embodiment, the door switch detection device is further configured to detect a time length of each opening of the door body; the current state parameter further includes the time length of each opening of the door body;
the defrosting interval compensation value is equal to the product of the accumulated time length of the door body after m times of opening and a second preset defrosting time multiple;
wherein m is N-N, and N is the cumulative number of openings.
Illustratively, the defrosting interval compensation value X2The expression of (a) is:
X2＝b2tm
wherein, tmThe cumulative duration of the last m openings, b2And the second preset defrosting time multiple is obtained.
As an alternative embodiment, the second preset defrosting time multiple b2Equal to 60.
It is worth to be noted that when the accumulated opening times is greater than the preset threshold of the opening times, it indicates that the opening times of the user are more, and if the accumulated time of defrosting when the door is opened is continuously accumulated at a speed 120 times, the actual defrosting interval of the freezing chamber is smaller, so that frequent defrosting of the freezing chamber is performed. Therefore, the defrosting accumulation time is set to be accumulated at a speed of 60 times when the door is opened, so that the defrosting period is prolonged, and the defrosting frequency of the freezing chamber is reduced.
It should be noted that the numerical values of the first preset defrosting time multiple and the second preset defrosting time multiple may be adjusted according to actual situations, and in this embodiment, only an exemplary description is given, but it should be ensured that the numerical value of the second preset defrosting time multiple is smaller than the numerical value of the first preset defrosting time multiple.
It should be noted that, when the accumulated opening times is greater than the preset threshold of the opening times, it may be determined that the opening times of the user is relatively large in this state, and in this case, if the time interval of the defrosting of the freezing chamber is still calculated according to the first preset defrosting time multiple, the actual defrosting interval of the refrigerator is very short, which results in frequent defrosting of the refrigerator. Therefore, in order to delay the defrosting period of the freezing chamber, the part of the accumulated door opening time after exceeding the preset door opening time threshold is calculated at the defrosting speed which is less than the multiple of the first preset defrosting time, so that the actual defrosting interval is increased, the frequent defrosting time of the freezing chamber is reduced, and the refrigerating effect of the refrigerator is effectively improved.
Illustratively, the preset threshold of the number of door openings is 10.
For example, when the accumulated opening times is greater than a preset threshold of opening times, the expression for judging whether the running time of the whole machine reaches the current defrosting interval time is specifically as follows:
X≥X1+X2
transforming the above expression as follows:
X≥Y-b1tn+b2tm
wherein, X is the running time of the whole machine.
When the accumulated opening times is smaller than a preset door opening time threshold, the expression for judging whether the running time of the whole machine reaches the current defrosting interval time is specifically as follows:
X≥X1
transforming the above expression as follows:
X≥Y-b1tn
it should be noted that, when the accumulated opening times is greater than the preset threshold of opening times, t isnThe accumulated time length of the previous n times of opening of the door body is n, n is the threshold value of the opening times, and t is tn+tmWhen the accumulated opening times is smaller than the preset opening time threshold, the accumulated opening time of the door body is t-tn。
It should be noted that the preset defrosting stop condition may be set according to an actual requirement of the freezer compartment of the refrigerator or an experimental result, and is not limited herein.
It is worth mentioning that after the defrosting device is controlled to stop defrosting operation and the freezing chamber is controlled to recover refrigeration under the condition that the preset defrosting stop condition is met, or the running time of the whole machine does not reach the current defrosting interval time, the controller returns to the step of obtaining the state parameters of the freezing chamber in the current refrigeration cycle, so that the circulating defrosting work of the freezing chamber of the refrigerator is realized, the defrosting interval time can be adjusted according to the condition that a user opens a door body of the freezing chamber, the refrigeration effect of the refrigerator is improved, and the user experience is improved.
For the refrigerator provided in this embodiment, in conjunction with the flowchart shown in fig. 3, the work flow of the controller in the refrigerator is specifically as follows:
when a user performs door opening and closing operations, the door opening and closing detection device can transmit detected signals of door opening and closing actions to the main control board of the refrigerator, and the main control board can record state parameters of the freezing chamber in the current refrigeration cycle. The state parameters comprise the accumulated opening times N of the door body, the running time X of the whole machine and the time length of opening the door body each time;
if the accumulated opening times N of the door body is greater than a preset door opening time threshold value and the running time of the whole machine reaches the current defrosting interval time, the formula (t-t) is metn)60+X+120tnIf the refrigerating chamber is not less than Y, controlling the refrigerating chamber to stop refrigerating and controlling the defrosting device to execute defrosting operation until a preset defrosting stop condition is met, controlling the defrosting device to stop defrosting operation and controlling the refrigerating chamber to recover refrigerating, and returning to the step of acquiring the state parameters of the refrigerating chamber in the current refrigerating cycle;
if the accumulated opening times N of the door body is smaller than a preset door opening time threshold value 10, and the running time of the whole machine reaches the current defrosting interval time, namely the formula X +120t is satisfied and is not less than Y, controlling the freezing chamber to stop refrigerating and controlling the defrosting device to execute defrosting operation, controlling the defrosting device to stop defrosting operation and controlling the freezing chamber to recover refrigerating until a preset defrosting stop condition is satisfied, and returning to the step of acquiring the state parameters of the freezing chamber in the current refrigerating cycle;
and if the running time of the whole machine does not reach the current defrosting interval time, adding one to the accumulated opening times, continuously detecting the door opening condition of the user, and repeating the steps until defrosting is stopped.
Note that N is shown in FIG. 3iThat is, the accumulated opening times N is described above, in order to more intuitively explain that the freezing chamber can automatically determine whether the defrosting operation needs to be performed on the freezing chamber according to the acquired parameters, the accumulated opening times is increased by one each time the circulation operation is not completed, so as to automatically determine the next defrosting operation according to the state parameters. In addition, after the freezing chamber of the refrigerator finishes defrosting work, the acquired numerical values of the state parameters are cleared and resetAnd recording the new record so as to carry out defrosting work in the next refrigerating cycle.
Referring to fig. 4, a schematic flow chart of another defrosting control method for a refrigerator according to an embodiment of the present invention is shown.
The defrosting control method for the refrigerator provided by the embodiment comprises the following steps of S41-S43:
s41, when the freezing chamber of the refrigerator is in a non-defrosting state, acquiring the state parameters of the refrigerator in the current refrigeration cycle in real time; the state parameters comprise the running time of the whole machine and the accumulated opening times of a door body of the freezing chamber;
s42, judging whether the accumulated opening times are larger than a preset door opening time threshold value or not, if so, acquiring a predicted defrosting interval time and a defrosting interval compensation value, and compensating the predicted defrosting interval time according to the defrosting interval compensation value to obtain the current defrosting interval time, otherwise, acquiring the predicted defrosting interval time as the current defrosting interval time;
and S43, judging whether the running time of the whole machine reaches the current defrosting interval time, if so, controlling a defrosting device of the refrigerator to execute defrosting operation, and controlling the defrosting device to stop defrosting operation until a preset defrosting stop condition is met.
Compared with the prior art, the defrosting control method for the refrigerator provided by the embodiment of the invention is characterized in that when a freezing chamber of the refrigerator is in a non-defrosting state, the state parameters of the refrigerator in a current refrigerating cycle are acquired in real time, wherein the state parameters comprise accumulated opening times of a door body of the freezing chamber and running time of the whole refrigerator, whether the accumulated opening times are larger than a preset door opening time threshold value is judged, if yes, estimated defrosting interval time and a defrosting interval compensation value are acquired, the estimated defrosting interval time is compensated according to the defrosting interval compensation value to obtain current defrosting interval time, if not, the estimated defrosting interval time is acquired as the current defrosting interval time, whether the running time of the whole refrigerator reaches the current defrosting interval time is judged, and if yes, a defrosting device of the refrigerator is controlled to perform defrosting operation, and controlling the defrosting device to stop defrosting operation until a preset defrosting stop condition is met. According to the refrigerator and the defrosting control method thereof provided by the embodiment of the invention, the defrosting interval time can be adjusted according to the condition that a user opens the door body of the freezing chamber, and the defrosting interval time is correspondingly prolonged when the door opening times of the user are excessive, so that the refrigerator is controlled to delay defrosting, the accuracy of defrosting control of the refrigerator is improved, the problem that the temperature in the frosted freezing chamber is too high due to the fact that defrosting is controlled according to the original defrosting interval time when the door opening times of the user are excessive can be effectively solved, the refrigerating effect of the refrigerator is improved, the use experience of the user is improved, and unnecessary energy consumption is reduced.
It is worth explaining that the using state of a user is judged by obtaining the parameters of the refrigerator, and under the condition that the times of opening the freezing door by the user are more and the cold energy in the freezing chamber is greatly dissipated, the accuracy of defrosting control is improved by reasonably adjusting the defrosting interval time of the refrigerator, so that the refrigerating effect of the refrigerator is effectively improved, and unnecessary energy consumption is reduced.
As one optional implementation manner, the state parameter further includes a time length of each opening of the door body;
the estimated defrosting interval time is equal to a difference obtained by subtracting a product of a first preset defrosting time multiple and the cumulative time of N times of opening of the door body from a preset fixed defrosting period; and N is the accumulated opening times.
As one optional embodiment, the first preset defrosting time multiple is 120.
As one optional implementation manner, the current state parameter further includes a time length of each opening of the door body;
the defrosting interval compensation value is equal to the product of the accumulated time length of the door body after m times of opening and a second preset defrosting time multiple;
and N is the accumulated opening times, and N is the threshold of the opening times.
As an alternative embodiment, the second preset defrosting time multiple is equal to 60.
It is worth explaining that the accumulated opening times of the door body is larger than a preset opening time threshold value, so that the opening times of a user are more, in order to reduce defrosting frequency and prolong defrosting period, the second preset defrosting time multiple needs to be smaller than the first preset defrosting time multiple, and the defrosting control accuracy is improved by reasonably adjusting defrosting interval time of the refrigerator, so that the refrigerating effect of the refrigerator is effectively improved, and unnecessary energy consumption is reduced.
It should be noted that, the specific processes and descriptions of the defrosting control method for the refrigerator provided in this embodiment may refer to the related embodiments of the refrigerator provided above, and are not described herein again.
It should be noted that the above-described device embodiments are merely illustrative, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. In addition, in the drawings of the embodiment of the apparatus provided by the present invention, the connection relationship between the modules indicates that there is a communication connection between them, and may be specifically implemented as one or more communication buses or signal lines. One of ordinary skill in the art can understand and implement it without inventive effort.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims (10)

1. A refrigerator, characterized by comprising:
the refrigerator comprises a refrigerator body, a refrigerating chamber and a refrigerating chamber, wherein the refrigerator body is internally provided with the refrigerating chamber;
the door body is arranged at the opening of the freezing chamber;
a defrosting device for defrosting the freezing chamber when a defrosting operation is performed;
a door opening/closing detection device for detecting an opening/closing operation of the door body; and the number of the first and second groups,
a controller configured to:
when the freezing chamber is in a non-defrosting state, acquiring state parameters of the refrigerator in a current refrigerating cycle in real time; the state parameters comprise the running time of the whole machine and the accumulated opening times of the door body;
judging whether the accumulated opening times is larger than a preset door opening time threshold or not, if so, acquiring a predicted defrosting interval time and a defrosting interval compensation value, and compensating the predicted defrosting interval time according to the defrosting interval compensation value to obtain a current defrosting interval time, otherwise, acquiring the predicted defrosting interval time as the current defrosting interval time;
and judging whether the running time of the whole machine reaches the current defrosting interval time, if so, controlling the defrosting device to execute defrosting operation, and controlling the defrosting device to stop defrosting operation until preset defrosting stop conditions are met.
2. The refrigerator according to claim 1, wherein the door switch detecting means is further configured to detect a time duration for each opening of the door body; the state parameters further include the time length of each opening of the door body;
the estimated defrosting interval time is equal to a difference obtained by subtracting a product of a first preset defrosting time multiple and the cumulative time of N times of opening of the door body from a preset fixed defrosting period; and N is the accumulated opening times.
3. The refrigerator of claim 2, wherein the first preset defrosting time multiple is 120.
4. The refrigerator according to claim 1, wherein the door switch detecting means is further configured to detect a time duration for each opening of the door body; the current state parameter further includes the time length of each opening of the door body;
the defrosting interval compensation value is equal to the product of the accumulated time length of the door body after m times of opening and a second preset defrosting time multiple;
and N is the accumulated opening times, and N is the threshold of the opening times.
5. The refrigerator according to claim 4, characterized in that the second preset defrosting time multiple is equal to 60.
6. A defrosting control method of a refrigerator is characterized by comprising the following steps:
when a freezing chamber of a refrigerator is in a non-defrosting state, acquiring state parameters of the refrigerator in a current refrigerating cycle in real time; the state parameters comprise the running time of the whole machine and the accumulated opening times of a door body of the freezing chamber;
judging whether the accumulated opening times is larger than a preset door opening time threshold or not, if so, acquiring a predicted defrosting interval time and a defrosting interval compensation value, and compensating the predicted defrosting interval time according to the defrosting interval compensation value to obtain a current defrosting interval time, otherwise, acquiring the predicted defrosting interval time as the current defrosting interval time;
and judging whether the running time of the whole machine reaches the current defrosting interval time, if so, controlling a defrosting device of the refrigerator to execute defrosting operation, and controlling the defrosting device to stop defrosting operation until preset defrosting stop conditions are met.
7. The defrosting control method of a refrigerator according to claim 6 wherein the status parameters further include a time period for each opening of the door body;
the estimated defrosting interval time is equal to a difference obtained by subtracting a product of a first preset defrosting time multiple and the cumulative time of N times of opening of the door body from a preset fixed defrosting period; and N is the accumulated opening times.
8. The defrosting control method of a refrigerator of claim 7 wherein the first preset defrosting time multiple is 120.
9. The defrosting control method of a refrigerator according to claim 6 wherein the door switch detecting means is further configured to detect a time period for which the door body is opened each time; the current state parameter further includes the time length of each opening of the door body;
the defrosting interval compensation value is equal to the product of the accumulated time length of the door body after m times of opening and a second preset defrosting time multiple;
and N is the accumulated opening times, and N is the threshold of the opening times.
10. The defrosting control method of a refrigerator of claim 9 wherein the second preset defrosting time multiple is equal to 60.
CN202110381408.8A 2021-04-09 2021-04-09 Refrigerator and defrosting control method thereof Active CN113915881B (en)

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