CN114484991A - Refrigerator and defrosting control method thereof - Google Patents

Refrigerator and defrosting control method thereof Download PDF

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Publication number
CN114484991A
CN114484991A CN202210118664.2A CN202210118664A CN114484991A CN 114484991 A CN114484991 A CN 114484991A CN 202210118664 A CN202210118664 A CN 202210118664A CN 114484991 A CN114484991 A CN 114484991A
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Prior art keywords
thawing
rate
time
food
chamber
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CN114484991B (en
Inventor
赵志磊
孙迎宾
宿建光
赵全
王磊
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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
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
    • A23L3/36—Freezing; Subsequent thawing; Cooling
    • A23L3/365—Thawing subsequent to freezing
    • 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
    • F25D23/00—General constructional features
    • F25D23/12—Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove
    • 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
    • F25D29/003—Arrangement or mounting of control or safety devices for movable 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/16—Sensors measuring the temperature of products

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Nutrition Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Electric Ovens (AREA)

Abstract

The invention discloses a refrigerator and a defrosting control method of the refrigerator. The refrigerator includes: the thawing chamber is used for storing food to be thawed; the sensing device is arranged at the bottom of the thawing chamber and is used for detecting the weight and the surface temperature of the food to be thawed; heating means for heating the thawing chamber; control means for: acquiring the weight and the surface temperature in real time; when the thawing chamber is detected to be in a thawing mode, obtaining the currently set thawing duration; determining the turn-on rate corresponding to the weight according to a preset corresponding relation between the weight and the turn-on rate, wherein the turn-on rate is used as the initial turn-on rate of the heating device; and calculating the unfreezing rate according to the surface temperature and the unfreezing duration, and adjusting the current on-time rate of the heating device according to the unfreezing rate. By adopting the embodiment of the invention, different unfreezing temperatures can be provided for food according to the unfreezing requirement of a user, so that the unfreezing requirement of the user is met, and meanwhile, the quality of food materials is ensured.

Description

Refrigerator and defrosting control method thereof
Technical Field
The invention relates to the field of refrigerator control, in particular to a refrigerator and a defrosting control method of the refrigerator.
Background
With the economic development and the improvement of the living standard of people, the refrigerator has long become an essential household appliance in daily life of people. The refrigerator mainly delays the deterioration of food by reducing the temperature of the food, thereby achieving the effect of long-term storage.
Cryopreserved foods require a thawing process before use, but people often do not have the full time to wait for the food to completely thaw. Sometimes people need to take food from the freezing area of the refrigerator to the fresh-keeping area of the refrigerator for thawing or taking food to the outside of the refrigerator for natural thawing in the morning or in the night before the day, and then cook the food after returning home in the evening.
However, the inventors found that the prior art has at least the following problems: food is unfrozen or naturally unfrozen slowly in a fresh-keeping area of a refrigerator, and is likely not unfrozen to finish cooking time, so that the requirement of a user for adjusting the unfreezing time cannot be met; in addition, when food is naturally thawed outside the refrigerator, the food can be thawed after being used for several hours, but the food can be cooked after waiting for several hours, and the food after being thawed can be quickly deteriorated when being placed in a normal-temperature environment, so that the nutrition and the taste are lost, and even food deterioration and poisoning accidents occur.
Disclosure of Invention
The embodiment of the invention aims to provide a refrigerator and a defrosting control method of the refrigerator, which can control the running state of a defrosting chamber according to the defrosting requirement of a user, so that different defrosting temperatures are provided for food, the defrosting requirement of the user is met, and the quality of food materials is ensured.
To achieve the above object, an embodiment of the present invention provides a refrigerator, including:
the thawing chamber is used for storing food to be thawed;
the sensing device is arranged at the bottom of the thawing chamber and is used for detecting the weight and the surface temperature of the food to be thawed;
heating means for heating the thawing chamber;
control means for:
acquiring the weight and the surface temperature in real time;
when the thawing chamber is detected to be in a thawing mode, obtaining the currently set thawing duration;
determining the turn-on rate corresponding to the weight according to a preset corresponding relation between the weight and the turn-on rate, wherein the turn-on rate is used as the initial turn-on rate of the heating device;
and calculating the unfreezing rate according to the surface temperature and the unfreezing duration, and adjusting the current on-time rate of the heating device according to the unfreezing rate.
As an improvement of the above scheme, the preset correspondence between the weight and the power-on rate is specifically a correspondence between a preset weight interval and the power-on rate; then, the determining, according to a preset correspondence between the weight and the turn-on rate, the turn-on rate corresponding to the weight as an initial turn-on rate of the heating device specifically includes:
when the thawing chamber is detected to be in a thawing mode, determining a weight interval where the weight of the food to be thawed is located according to the weight of the food to be thawed obtained currently; the weight interval is obtained by pre-dividing;
determining the turn-on rate corresponding to the weight interval as the initial turn-on rate of the heating device according to the corresponding relation between the preset weight interval and the turn-on rate;
and controlling the heating device to start to operate according to the initial turn-on rate.
As an improvement of the above scheme, the calculating a thawing rate according to the surface temperature and the thawing duration, and adjusting the current on-time rate of the heating device according to the thawing rate specifically includes:
when the thawing chamber is detected to be in a thawing mode, calculating the thawing rate of the food to be thawed according to the currently acquired surface temperature and the thawing duration as an initial thawing rate;
calculating the thawing rate of the food to be thawed as a real-time thawing rate according to the currently acquired surface temperature and the elapsed thawing time at intervals of a first preset time;
and adjusting the current on-time rate of the heating device according to the comparison relationship between the initial thawing rate and the real-time thawing rate.
As an improvement of the above-mentioned scheme, the adjusting the current on-time rate of the heating device according to the comparison relationship between the initial thawing rate and the real-time thawing rate specifically includes:
comparing the magnitude relation between the initial thawing rate and the real-time thawing rate;
when the initial thawing rate is greater than the real-time thawing rate, increasing the current on-time rate of the heating device by a preset adjustment step length;
when the initial thawing rate is smaller than the real-time thawing rate, reducing the current on-time rate of the heating device by a preset adjustment step length;
when the initial unfreezing rate is equal to the real-time unfreezing rate, the current on-time rate of the heating device is kept unchanged.
As an improvement of the above, the control device is further configured to:
when the surface temperature of the food to be unfrozen is detected to reach a preset target temperature, controlling the heating device to quit the operation;
and adjusting the current temperature gear of the unfreezing chamber to enable the indoor temperature corresponding to the current temperature gear to be consistent with the target temperature.
As an improvement of the scheme, a freezing chamber and a refrigerating chamber are arranged in the refrigerator; the thawing chamber is arranged in the freezing chamber or the refrigerating chamber;
if the thawing chamber is arranged in the refrigerating chamber, after the weight and the surface temperature are obtained in real time and before the currently set thawing duration is obtained when the thawing chamber is detected to be in the thawing gear, the control device is further configured to:
when the weight obtained at present is inconsistent with the weight obtained at the last moment, judging whether the indoor temperature corresponding to the current temperature gear of the unfreezing chamber is higher than a preset target temperature or not;
if so, recording the current surface temperature of the food to be thawed as a food storage temperature, and when the food storage temperature is less than or equal to the target temperature and the current temperature gear is not adjusted to the temperature gear corresponding to the food storage temperature after a second preset time, adjusting the current temperature gear to enable the current temperature gear to be the temperature gear corresponding to the food storage temperature, and executing: detecting whether the thawing chamber is in a thawing mode;
and if not, detecting whether the thawing chamber is in a thawing mode.
As an improvement of the scheme, the periphery of the thawing chamber is provided with a heat-insulating layer; the heat insulation layer is formed by adding heat insulation materials into a frame structure, or adding heat insulation materials into an inner container of the refrigerator, or adding foam into an air duct of the refrigerator; and the heating device comprises a heating wire and a fan, the heating wire and the fan are arranged at the top of the unfreezing chamber, and the heating wire and the fan are matched with the heat preservation layer to form an air supply and return air cavity.
The embodiment of the invention also provides a thawing control method of the refrigerator, wherein the refrigerator comprises the following steps:
the thawing chamber is used for storing food to be thawed;
the sensing device is arranged at the bottom of the thawing chamber and is used for detecting the weight and the surface temperature of the food to be thawed;
heating means for heating the thawing chamber;
the thawing control method of the refrigerator comprises the following steps:
acquiring the weight and the surface temperature in real time;
when the thawing chamber is detected to be in a thawing mode, obtaining the currently set thawing duration;
determining the turn-on rate corresponding to the weight according to a preset corresponding relation between the weight and the turn-on rate, wherein the turn-on rate is used as the initial turn-on rate of the heating device;
and calculating the unfreezing rate according to the surface temperature and the unfreezing duration, and adjusting the current on-time rate of the heating device according to the unfreezing rate.
As an improvement of the above scheme, the calculating a thawing rate according to the surface temperature and the thawing duration, and adjusting the current on-time rate of the heating device according to the thawing rate specifically includes:
when the thawing chamber is detected to be in a thawing mode, calculating the thawing rate of the food to be thawed according to the currently acquired surface temperature and the thawing duration as an initial thawing rate;
calculating the thawing rate of the food to be thawed as a real-time thawing rate according to the currently acquired surface temperature and the elapsed thawing time at intervals of a first preset time;
and adjusting the current on-time rate of the heating device according to the comparison relationship between the initial thawing rate and the real-time thawing rate.
As an improvement of the above-mentioned scheme, the adjusting the current on-time rate of the heating device according to the comparison relationship between the initial thawing rate and the real-time thawing rate specifically includes:
comparing the magnitude relation between the initial thawing rate and the real-time thawing rate;
when the initial unfreezing rate is larger than the real-time unfreezing rate, increasing the current on-time rate of the heating device by a preset adjusting step length;
when the initial thawing rate is smaller than the real-time thawing rate, reducing the current on-time rate of the heating device by a preset adjustment step length;
when the initial unfreezing rate is equal to the real-time unfreezing rate, the current on-time rate of the heating device is kept unchanged.
Compared with the prior art, the refrigerator and the unfreezing control method of the refrigerator disclosed by the embodiment of the invention comprise the unfreezing chamber for storing food to be unfrozen, the sensing device for detecting the weight and the surface temperature of the food to be unfrozen and the heating device for heating the unfreezing chamber. Obtaining the weight and the surface temperature in real time; when the thawing chamber is detected to be in a thawing mode, obtaining the currently set thawing duration; determining the turn-on rate corresponding to the weight according to a preset corresponding relation between the weight and the turn-on rate, wherein the turn-on rate is used as the initial turn-on rate of the heating device; and calculating the unfreezing rate according to the surface temperature and the unfreezing duration, and adjusting the current on-time rate of the heating device according to the unfreezing rate. By adopting the technical means of the embodiment of the invention, the operation state of the thawing chamber and the operation parameters of the heating device can be controlled according to the thawing requirements of users, so that different thawing temperatures are provided for food, the thawing of the food to be thawed can be completed according to the thawing time set by the users, the thawing requirements of the users are effectively met, the use of the food to be thawed by the users is prevented from being influenced, the quality of food materials is ensured, the food to be thawed is prevented from being deteriorated due to the long-time storage in a normal temperature environment, the nutrition and the delicacy are prevented, the intellectualization of the refrigerator is improved, and the use experience of the users is effectively improved.
Drawings
Fig. 1 is a schematic structural diagram of a preferred embodiment of a refrigerator according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a preferred embodiment of the operation performed by the control device of the refrigerator in the embodiment of the present invention;
FIG. 3 is a flow chart illustrating a preferred embodiment of determining an initial turn-on value of a heating device according to an embodiment of the present invention;
FIG. 4 is a schematic flow chart illustrating a preferred embodiment of adjusting the turn-on rate of the heating device according to the present invention;
FIG. 5 is a schematic flow chart illustrating another preferred embodiment of adjusting the turn-on rate of the heating device according to the present invention;
fig. 6 is a schematic flow chart of another preferred embodiment of the work performed by the control device of the refrigerator in the embodiment of the present invention;
FIG. 7 is a schematic flow diagram of a preferred embodiment of the work performed by the control means when the defrosting compartment is located in the refrigeration compartment in an embodiment of the present invention;
FIG. 8 is a schematic flow chart of a preferred embodiment of the operation performed by the control means when the thawing chamber is in the freezing chamber in an embodiment of the present invention;
fig. 9 is a schematic structural view of another preferred embodiment of a refrigerator in an embodiment of the present invention;
fig. 10 is a schematic flowchart of a defrosting control method of a refrigerator according to an embodiment of the present invention;
FIG. 11 is a flow chart illustrating the operation of adjusting the ON-time of the heating device according to the preferred embodiment of the present invention;
fig. 12 is a schematic flow chart illustrating another preferred embodiment of adjusting the on-time rate of the heating device according to 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 a part of the embodiments of the present invention, 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 invention.
Referring to fig. 1, a schematic structural diagram of a preferred embodiment of a refrigerator according to an embodiment of the present invention is shown. An embodiment of the present invention provides a refrigerator 10, including: a thawing chamber 11, a sensing device 12, a heating device 13 and a control device 14.
The thawing chamber 11 is arranged in the refrigerator body and used for storing food to be thawed. The thawing chamber 11 is a closed space, a heat insulation layer meeting requirements exists between the thawing chamber 11 and other storage spaces of the refrigerator, and the storage temperature range of the thawing chamber 11 comprises-20 to-5 ℃.
Sensing device 12 is located the bottom of thawing room 11 for detect wait to thaw food's weight and surface temperature, sensing device 12 includes two solitary modules of weight sensor 121 and temperature sensor 122, places the bottom of thawing room 11, and the position of placing can be adjusted according to the demand. The weight sensor 121 is used for detecting the weight of the food to be thawed, and the temperature sensor 122 is used for detecting the surface temperature of the food to be thawed.
The heating device 13 is arranged at the top of the thawing chamber 11 and used for heating the thawing chamber, so that the food to be thawed in the thawing chamber can be thawed. The starting rate of the heating device 13 can be adjusted according to the requirements, so that different thawing requirements of the user on the food to be thawed can be met.
The control device 14 is connected to the weight sensor 121, the temperature sensor 122, and the heating device 13, respectively. Fig. 2 is a schematic flow chart of a preferred embodiment of the work performed by the control device of the refrigerator according to the embodiment of the present invention. The control device 14 is configured to execute steps S11 to S14:
s11, acquiring the weight and the surface temperature in real time.
And S12, when the thawing chamber is detected to be in a thawing mode, obtaining the currently set thawing duration.
S13, determining the turn-on rate corresponding to the weight according to the corresponding relation between the preset weight and the turn-on rate, and using the turn-on rate as the initial turn-on rate of the heating device.
And S14, calculating the unfreezing rate according to the surface temperature and the unfreezing duration, and adjusting the current on-time rate of the heating device according to the unfreezing rate.
Specifically, in the embodiment of the present invention, the control device 14 acquires the weight detected by the weight sensor 121 and the surface temperature detected by the temperature sensor 122 in real time through communication with the weight sensor 121 and the temperature sensor 122.
In the implementation process, a user stores food to be defrosted in the defreezing chamber, and then the defreezing chamber is controlled to enter a defreezing mode according to the self requirement, and corresponding defreezing time is set, so that timely defreezing can be completed before the food is used.
As an example, when a user needs to use beef stored in a refrigerator at 6 pm in the evening, the beef may be put into the thawing chamber 11 at 4 pm and a thawing time of 2 hours may be set, and the control means may control the heating means to heat the thawing chamber according to the thawing time, so that the beef can be thawed at 6 pm.
It can understand, the refrigerator has remote control function and timing function, and the user can in advance with wait to unfreeze food and put into unfreezing room 11 to APP software through installing on terminal equipment such as cell-phone, computer, remote control the unfreezing room of refrigerator gets into the mode of unfreezing, also can be through timing function, control the unfreezing room gets into the mode of unfreezing at user-defined moment. When a user puts food to be defrosted into the unfreezing chamber in advance, the temperature gear of the unfreezing chamber can be set according to the suitable storage temperature of the food so as to meet the storage requirement of the food.
The corresponding relationship between the weight and the starting rate is preset, and different food weights correspond to different initial starting rates of the heating device 13 and are preset into the control program. When the control device 14 detects that the thawing chamber 11 is in the thawing mode, the thawing duration set by the user is obtained. And then, according to the weight of the food to be defrosted correspondingly obtained when the defrosting chamber 11 enters the defrosting mode and the corresponding relation between the preset weight and the start-up rate, determining the start-up rate corresponding to the weight as the initial start-up rate of the heating device, and controlling the heating device to start to operate according to the initial start-up rate. Then, the control device obtains the surface temperature of the food to be thawed detected by the temperature sensor 122 in real time, calculates the current thawing rate in real time according to the surface temperature and the thawing duration, and adjusts the current on-time rate of the heating device according to the thawing rate, so that the thawing of the food to be thawed can be completed according to the thawing time set by the user.
The embodiment of the invention provides a refrigerator, which comprises a thawing chamber, a sensing device, a heating device and a control device, wherein the thawing chamber is used for storing food to be thawed; the control device acquires the weight and the surface temperature in real time; when the thawing chamber is detected to be in a thawing mode, obtaining the currently set thawing duration; determining the turn-on rate corresponding to the weight according to a preset corresponding relation between the weight and the turn-on rate, wherein the turn-on rate is used as the initial turn-on rate of the heating device; and calculating the unfreezing rate according to the surface temperature and the unfreezing duration, and adjusting the current on-time rate of the heating device according to the unfreezing rate. By adopting the technical means of the embodiment of the invention, the operation state of the thawing chamber and the operation parameters of the heating device can be controlled according to the thawing requirements of users, so that different thawing temperatures are provided for food, the thawing of the food to be thawed can be completed according to the thawing time set by the users, the thawing requirements of the users are effectively met, the use of the food to be thawed by the users is prevented from being influenced, the quality of food materials is ensured, the food to be thawed is prevented from being deteriorated due to the long-time storage in a normal temperature environment, the nutrition and the delicacy are prevented, the intellectualization of the refrigerator is improved, and the use experience of the users is effectively improved.
As a preferred implementation manner, refer to fig. 3, which is a schematic flow chart of a preferred embodiment of determining an initial on-time ratio of a heating device according to an embodiment of the present invention. The embodiment of the present invention is further implemented on the basis of the above embodiments, and specifically, the preset correspondence between the weight and the power-on rate is a correspondence between a preset weight interval and a power-on rate; then, the step S13 specifically includes steps S131 to S133:
s131, when the thawing chamber is detected to be in a thawing mode, determining a weight interval where the weight of the food to be thawed is located according to the weight of the food to be thawed obtained currently; the weight interval is obtained by pre-dividing;
s132, determining the turn-on rate corresponding to the weight interval as the initial turn-on rate of the heating device according to the corresponding relation between the preset weight interval and the turn-on rate;
and S133, controlling the heating device to start to operate according to the initial starting rate.
In the embodiment of the present invention, the food weight is divided into a plurality of weight sections in advance, different weight sections correspond to different initial turn-on rates of the heating device 13, a corresponding relationship between the preset weight sections and the turn-on rates is formed, and the corresponding relationship is preset in the control program. When the control device 14 detects that the thawing chamber 11 is in the thawing mode, according to the weight of the food to be thawed correspondingly obtained when the thawing chamber 11 enters the thawing mode and the corresponding relationship between the preset weight interval and the opening rate, determining the opening rate corresponding to the weight as the initial opening rate of the heating device, and controlling the heating device to start to operate according to the initial opening rate.
It should be noted that the corresponding relationship between the preset weight interval and the start-up rate can be obtained according to multiple experiments and machine learning training, and is not limited herein.
By adopting the technical means of the embodiment of the invention, the initial start-up rate of the heating device after the heating device is started to operate and the initial start-up rates of the heating device corresponding to different food weights can be determined according to the weights of different foods to be thawed, so that the thawing temperature requirements corresponding to the foods with different weights can be effectively met, the thawing efficiency of the foods to be thawed is improved, and the subsequent start-up rate adjustment time can be effectively saved.
As a preferred embodiment, refer to fig. 4, which is a schematic flow chart of a preferred embodiment of adjusting the on-time rate of the heating device according to an embodiment of the present invention. The embodiment of the present invention is further implemented on the basis of the above embodiment, and specifically, the step S14 specifically includes steps S141 to S143:
s141, when the thawing chamber is detected to be in a thawing mode, calculating a thawing rate of the food to be thawed according to the currently acquired surface temperature and the thawing duration to serve as an initial thawing rate;
s142, calculating the thawing rate of the food to be thawed as a real-time thawing rate according to the currently acquired surface temperature and the elapsed thawing time at intervals of a first preset time;
s143, adjusting the current on-time rate of the heating device according to the comparison relation between the initial thawing rate and the real-time thawing rate.
In the embodiment of the invention, when a user requires to unfreeze, the heating device is started according to the initial starting rate of the heating device corresponding to the weight K of the food to be unfrozen which is stored currently. Further, a required initial thawing rate V0 is calculated based on the surface temperature T0 of the food to be thawed currently stored and the thawing time set by the user. And then, taking the surface temperature Tn of the food to be thawed stored currently once every a first preset time interval, and calculating the current elapsed thawing time so as to calculate and obtain the current real-time thawing rate Vn. And adjusting the current on-time rate of the heating device according to the comparison relationship between the initial thawing rate V0 and the real-time thawing rate Vn, so that the real-time thawing rate Vn can be close to the initial thawing rate V0, and the food to be thawed can be thawed according to the thawing time set by the user.
The calculation formula of the thawing rate V is as follows:
Figure BDA0003497496340000111
wherein Δ T is a difference between the surface temperature obtained when it is detected that the thawing chamber is in the thawing mode and the current surface temperature. Δ t is the currently elapsed thawing time, i.e. the difference between the moment when it is detected that the thawing chamber is in the thawing mode and the current moment.
It should be noted that the first preset time period is set to a second level, for example, 5 s. Of course, the first preset time period may be set according to actual situations, and does not limit the present invention.
As a preferred embodiment, refer to fig. 5, which is a schematic flow chart of another preferred embodiment of adjusting the on-time rate of the heating device according to the embodiment of the present invention. Wherein step S143 specifically includes steps S1431 to S1434:
s1431, comparing the size relation between the initial thawing rate and the real-time thawing rate;
s1432, when the initial thawing rate is larger than the real-time thawing rate, increasing the current on-time rate of the heating device by a preset adjustment step length;
s1433, when the initial unfreezing rate is smaller than the real-time unfreezing rate, reducing the current on-time rate of the heating device by a preset adjusting step length;
and S1434, when the initial unfreezing rate is equal to the real-time unfreezing rate, keeping the current on-time rate of the heating device unchanged.
In the embodiment of the present invention, after the control device 14 calculates the initial thawing rate V0, the control device 14 further calculates the real-time thawing rate Vn after the first preset time period elapses. And comparing the magnitude relation of the initial thawing rate V0 and the real-time thawing rate Vn.
If the two conditions are V0 and Vn, the current real-time thawing rate is slow, and if the heating device continues to operate according to the current on-time rate, the thawing of the food to be thawed cannot be completed within the thawing time set by a user, so that the on-time rate of the thawing heating wire needs to be increased, the current on-time rate of the heating device is increased by a preset adjustment step length, and the heating device is controlled to operate according to the increased on-time rate.
If the two conditions are V0 < Vn, the current real-time thawing rate is faster, and if the heating device continues to operate according to the current on-time rate, the thawing of food to be thawed can be completed in advance within the thawing time set by a user, so that the on-time rate of the thawing heating wire needs to be reduced, the current on-time rate of the heating device is reduced by a preset adjustment step length, and the heating device is controlled to operate according to the reduced on-time rate.
If both the values satisfy V0 ═ Vn, it indicates that the current real-time thawing rate is right, and if the heating device continues to operate according to the current on-time rate, the thawing of the food to be thawed is just completed according to the thawing time set by the user, so the current on-time rate of the heating device does not need to be adjusted, and the heating device is controlled to continue to operate according to the current on-time rate.
After the first preset time interval, recalculating the required thawing rate according to the surface temperature of the food to be thawed and the elapsed thawing time, and continuously correcting the on-time rate of the heating device until the real-time thawing rate is the same as the required initial thawing rate.
By adopting the technical means of the embodiment of the invention, the initial thawing rate can be calculated according to the set thawing time and the surface temperature of the food to be thawed, the real-time thawing rate is calculated in real time in the thawing process, and the current on-time rate of the heating device is further adjusted in a self-adaptive manner, so that the thawing operation of the food to be thawed is ensured to be completed within the set unlocking time, and the use experience of a user is effectively improved.
Referring to fig. 6, a flow chart of another preferred embodiment of the operation performed by the control device of the refrigerator according to the embodiment of the present invention is shown as a preferred embodiment. The embodiment of the present invention is further implemented on the basis of the above embodiment, and the control device 14 is further configured to execute steps S15 to S16 on the basis of executing steps S11 to S14:
s15, when the surface temperature of the food to be thawed is detected to reach a preset target temperature, controlling the heating device to stop running;
and S16, adjusting the current temperature gear of the unfreezing chamber to enable the indoor temperature corresponding to the current temperature gear to be consistent with the target temperature.
Specifically, the target temperature refers to a preset surface temperature that the food needs to reach when the thawing is completed. When the temperature detected by the temperature sensor obtained by the control device 14 is the preset target temperature TsetWhen the surface is finished by thawing the food to be thawed, the heating device 13 is controlled to be out of operation.
It should be noted that the preset target temperature is-5 ℃. Of course, the target temperature may also be adjusted according to the type of food to be thawed or the thawing demand of the user, and is not limited specifically herein.
It should be noted that, a plurality of temperature gears are preset in the defrosting chamber of the refrigerator, and different temperature gears correspond to different indoor target temperatures and are used for representing different indoor temperatures required by the refrigeration of the storage chamber inside the refrigerator.
Further, when the food to be defrosted is defrosted, after the heating device is controlled to quit the operation, the current temperature gear of the defrosted chamber is adjusted to enable the indoor temperature corresponding to the current temperature gear to be consistent with the target temperature, so that the storage temperature requirement of the defrosted food is met, and the food is prevented from being further frozen due to too low indoor temperature or the quality of the food is prevented from being influenced due to too high indoor temperature under the condition that a user does not take the food in time.
As a preferred embodiment, a freezing chamber and a refrigerating chamber are arranged in the refrigerator; the thawing chamber is arranged in the freezing chamber or the refrigerating chamber.
In one embodiment, if the thawing chamber is provided in the refrigerating chamber, the control device 14 is specifically configured to execute steps S21 to S27:
s21, acquiring the weight and the surface temperature in real time;
s22, when the weight obtained at present is inconsistent with the weight obtained at the last moment, judging whether the indoor temperature corresponding to the current temperature gear of the unfreezing chamber is higher than a preset target temperature;
s23, if yes, recording the current surface temperature of the food to be thawed as a food storage temperature, and when the food storage temperature is less than or equal to the target temperature and the current temperature gear is not adjusted to the temperature gear corresponding to the food storage temperature after a second preset time, adjusting the current temperature gear to enable the current temperature gear to be the temperature gear corresponding to the food storage temperature, and executing: detecting whether the thawing chamber is in a thawing mode;
s24, if not, detecting whether the thawing chamber is in a thawing mode;
s25, when the thawing chamber is detected to be in a thawing mode, obtaining the current set thawing duration;
s26, determining the turn-on rate corresponding to the weight according to the corresponding relation between the preset weight and the turn-on rate, and taking the turn-on rate corresponding to the weight as the initial turn-on rate of the heating device;
s27, calculating the unfreezing rate according to the surface temperature and the unfreezing duration, and adjusting the current on-time rate of the heating device according to the unfreezing rate.
In a specific application scenario, referring to fig. 7, a schematic flow chart of a preferred embodiment of the operation performed by the control device when the thawing chamber is located in the refrigerating chamber in the embodiment of the present invention is shown. The control device acquires the weight detected by the weight sensor and the surface temperature detected by the temperature sensor in real time. It will be appreciated that the sensing means can also sense weight and temperature values and feed them back to the control means when no food to be thawed is placed in the thawing compartment. And the control device judges whether the weight acquired currently is consistent with the weight acquired at the last moment in real time, and if not, the control device can judge that fresh food is put into the thawing chamber. Further, by acquiring the surface temperature of the food, if the surface temperature is lower than a preset target temperature, it is determined that the food to be thawed is placed in the thawing chamber.
Preferably, the controller may be further configured to detect whether a door of the thawing chamber is opened at present, and further determine whether the weight obtained at present is consistent with the weight obtained at the previous moment when the door of the thawing chamber is opened, so as to improve accuracy of determining whether to put in food.
Further, since in practical applications the thawing compartment is located in the refrigerating compartment, which is usually at a temperature in the range of-zero degrees celsius, e.g. 0 ℃ to 10 ℃, the preset target temperature (i.e. the preset surface temperature to which the food is required to reach when thawing is completed, e.g. -5 ℃) may be greater than the room temperature corresponding to the temperature level of said thawing compartment. Therefore, after the food is placed in the unfreezing chamber, whether the indoor temperature corresponding to the current temperature gear of the unfreezing chamber is higher than the preset target temperature or not is judged, so that whether the current temperature gear is adjusted by a user or not is judged, and whether the user needs to unfreeze the food is judged. And if the indoor temperature corresponding to the currently set temperature gear is less than or equal to the target temperature, detecting whether the thawing chamber is in a thawing mode according to normal steps, and realizing thawing control of food to be thawed.
If the indoor temperature corresponding to the currently set temperature gear is larger than the target temperature, the food thawing control program cannot be normally started, the current surface temperature of the food to be thawed is recorded as the food storage temperature, whether the food storage temperature is smaller than or equal to the preset target temperature is judged to judge whether the put food needs thawing, if the food storage temperature is larger than the target temperature, the currently stored food does not need thawing, and the current temperature gear is matched with the storage temperature of the food, the thawing chamber is controlled to maintain the current temperature gear unchanged. If the food storage temperature is less than or equal to the target temperature, it is indicated that the currently stored food is unfrozen, and the current temperature gear is not suitable for the storage temperature required by the food, after waiting for a second preset time, whether a user adjusts the current temperature gear is judged, if the current temperature gear is not adjusted to be the temperature gear corresponding to the food storage temperature, the current temperature gear is adjusted, so that the current temperature gear is the temperature gear corresponding to the food storage temperature, and the following steps are executed: detecting whether the thawing chamber is in a thawing mode; if the temperature gear is adjusted to be the temperature gear corresponding to the food storage temperature, executing: detecting whether the thawing chamber is in a thawing mode.
By adopting the technical means of the embodiment of the invention, the food stored in the unfreezing chamber can be stored at a proper temperature, and the condition that the food is deteriorated due to the fact that the current temperature gear is not suitable for the food storage condition because the current temperature gear is not adjusted and the unfreezing mode is not set after the food is put into the food is avoided.
Further, when the control device 14 detects that the thawing chamber 11 is in the thawing mode, it obtains a thawing duration set by a user. And then, according to the weight of the food to be defrosted correspondingly obtained when the defrosting chamber 11 enters the defrosting mode and the corresponding relation between the preset weight and the start-up rate, determining the start-up rate corresponding to the weight as the initial start-up rate of the heating device, and controlling the heating device to start to operate according to the initial start-up rate. Then, according to the surface temperature T0 of the food to be thawed currently stored and the thawing time set by the user, the required initial thawing rate V0 is calculated. And then, taking the surface temperature Tn of the food to be thawed stored currently once every a first preset time interval, and calculating the current elapsed thawing time so as to calculate and obtain the current real-time thawing rate Vn. And comparing the magnitude relation between the initial thawing rate V0 and the real-time thawing rate Vn.
If the two conditions are V0 and Vn, the current real-time thawing rate is slow, and if the heating device continues to operate according to the current on-time rate, the thawing of the food to be thawed cannot be completed within the thawing time set by a user, so that the on-time rate of the thawing heating wire needs to be increased, the current on-time rate of the heating device is increased by a preset adjustment step length, and the heating device is controlled to operate according to the increased on-time rate.
If the two conditions are V0 < Vn, the current real-time thawing rate is faster, and if the heating device continues to operate according to the current on-time rate, the thawing of food to be thawed can be completed in advance within the thawing time set by a user, so that the on-time rate of the thawing heating wire needs to be reduced, the current on-time rate of the heating device is reduced by a preset adjustment step length, and the heating device is controlled to operate according to the reduced on-time rate.
If both the values satisfy V0 ═ Vn, it indicates that the current real-time thawing rate is right, and if the heating device continues to operate according to the current on-time rate, the thawing of the food to be thawed is just completed according to the thawing time set by the user, so the current on-time rate of the heating device does not need to be adjusted, and the heating device is controlled to continue to operate according to the current on-time rate.
And recalculating the required thawing rate according to the surface temperature of the food to be thawed currently and the elapsed thawing time at intervals of a first preset time, and continuously correcting the on-time rate of the heating device until the real-time thawing rate is the same as the required initial thawing rate.
Finally, when the temperature detected by the temperature sensor obtained by the control device 14 is the preset target temperature TsetWhen the surface is finished by thawing the food to be thawed, the heating device 13 is controlled to be out of operation. Further, the current temperature gear of the unfreezing chamber is adjusted to enable the indoor temperature corresponding to the current temperature gear to be consistent with the target temperature, and therefore the storage temperature requirement of the unfrozen food is met.
In another embodiment, if the thawing chamber is disposed in the freezing chamber, the control device 14 is specifically configured to execute steps S31 to S34:
s31, acquiring the weight and the surface temperature in real time;
s32, when the thawing chamber is detected to be in a thawing mode, obtaining the currently set thawing duration;
s33, determining the turn-on rate corresponding to the weight according to the corresponding relation between the preset weight and the turn-on rate, and using the turn-on rate as the initial turn-on rate of the heating device;
and S34, calculating the unfreezing rate according to the surface temperature and the unfreezing duration, and adjusting the current on-time rate of the heating device according to the unfreezing rate.
In a specific application scenario, referring to fig. 8, a schematic flow chart of a preferred embodiment of the operation performed by the control device when the thawing chamber is located in the freezing chamber in the embodiment of the present invention is shown. In practical applications, the temperature range of the freezing chamber is generally below zero degrees celsius, and is usually less than a preset target temperature, i.e., a preset surface temperature to which food needs to be brought when thawing is completed. Therefore, when the unfreezing chamber is located in the freezing chamber, as long as the unfreezing chamber is controlled by a user to enter the unfreezing mode, the corresponding unfreezing time length can be obtained, the weight and the surface temperature are obtained in a combined mode, the starting rate of the heating device is adjusted, and unfreezing control of food to be unfrozen is achieved.
It is understood that the specific implementation of the thawing control is the same as the above embodiments, and is not described herein.
By adopting the technical means of the embodiment of the invention, the unfreezing chamber can be arranged in the refrigerating chamber or the freezing chamber according to requirements, and the unfreezing chamber and the freezing chamber are respectively provided with the corresponding unfreezing control programs, so that the unfreezing and storing requirements of foods to be unfrozen can be effectively met, and the use experience of a user is improved.
As a preferred embodiment, refer to fig. 9, which is a schematic structural diagram of another preferred embodiment of the refrigerator in the embodiment of the present invention. The embodiment of the present invention is further implemented on the basis of the above embodiment, and the refrigerator includes: the device comprises a thawing chamber, a sensing device, a heating device and a control device, wherein a heat insulation layer is arranged around the thawing chamber; the heat insulation layer is formed by adding heat insulation materials into a frame structure, or adding heat insulation materials into an inner container of the refrigerator, or adding foams into an air duct of the refrigerator.
Heating device includes heater strip and fan, the heater strip with the fan is all located the top of thawing room, just the heater strip with the fan with the heat preservation cooperation forms air supply and return air wind chamber to can form the inner loop with the indoor stock keeping part cooperation in room.
By adopting the technical means of the embodiment of the invention, the structural arrangement of the thawing chamber in the refrigerator can be optimized, and the food thawing efficiency is improved.
Fig. 10 is a schematic flow chart of a defrosting control method for a refrigerator according to an embodiment of the present invention. The embodiment of the invention also provides a thawing control method of the refrigerator, which is applied to the refrigerator, wherein the refrigerator comprises the following steps: the thawing chamber is used for storing food to be thawed; the sensing device is arranged at the bottom of the thawing chamber and is used for detecting the weight and the surface temperature of the food to be thawed; heating means for heating the thawing chamber;
the thawing control of the refrigerator includes steps S41 to S44:
s41, acquiring the weight and the surface temperature in real time;
s42, when the thawing chamber is detected to be in a thawing mode, obtaining the current set thawing duration;
s43, determining the turn-on rate corresponding to the weight according to the corresponding relation between the preset weight interval and the turn-on rate, and taking the turn-on rate corresponding to the weight as the initial turn-on rate of the heating device;
s44, calculating the unfreezing rate according to the surface temperature and the unfreezing duration, and adjusting the current on-time rate of the heating device according to the unfreezing rate.
By adopting the technical means of the embodiment of the invention, the operation state of the thawing chamber and the operation parameters of the heating device can be controlled according to the thawing requirements of users, so that different thawing temperatures are provided for food, the thawing of the food to be thawed can be completed according to the thawing time set by the users, the thawing requirements of the users are effectively met, the use of the food to be thawed by the users is prevented from being influenced, the quality of food materials is ensured, the food to be thawed is prevented from being deteriorated due to the long-time storage in a normal temperature environment, the nutrition and the delicacy are prevented, the intellectualization of the refrigerator is improved, and the use experience of the users is effectively improved.
Preferably, referring to fig. 11, a flowchart of a preferred embodiment of adjusting the on-time ratio of the heating device according to the embodiment of the present invention is shown. Step S44 specifically includes:
s441, when the thawing chamber is detected to be in a thawing mode, calculating the thawing rate of the food to be thawed according to the currently acquired surface temperature and the thawing duration as an initial thawing rate;
s442, calculating the thawing rate of the food to be thawed as a real-time thawing rate according to the currently acquired surface temperature and the elapsed thawing time at intervals of a first preset time;
s443, adjusting the current on-time rate of the heating device according to the comparison relationship between the initial thawing rate and the real-time thawing rate.
Preferably, referring to fig. 12, which is a schematic flow chart of another preferred embodiment of adjusting the on-time rate of the heating device according to the embodiment of the present invention, step S443 specifically includes:
s4431, comparing the size relationship between the initial thawing rate and the real-time thawing rate;
s4432, when the initial thawing rate is greater than the real-time thawing rate, increasing the current on-time rate of the heating device by a preset adjustment step length;
s4433, when the initial thawing rate is smaller than the real-time thawing rate, reducing the current on-time rate of the heating device by a preset adjustment step length;
s4434, when the initial unfreezing rate is equal to the real-time unfreezing rate, maintaining the current on-time rate of the heating device unchanged.
By adopting the technical means of the embodiment of the invention, the initial thawing rate can be calculated according to the set thawing time and the surface temperature of the food to be thawed, the real-time thawing rate is calculated in real time in the thawing process, and the current on-time rate of the heating device is further adjusted in a self-adaptive manner, so that the thawing operation of the food to be thawed is ensured to be completed within the set unlocking time, and the use experience of a user is effectively improved.
It should be noted that, the thawing control method for the refrigerator provided in the embodiment of the present invention is the same as all the process steps executed by the control device for the refrigerator in the above embodiment, and the working principles and beneficial effects of the two are in one-to-one correspondence, so that the detailed description is omitted.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-only memory (ROM), a Random Access Memory (RAM), or the like.
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 thawing chamber is used for storing food to be thawed;
the sensing device is arranged at the bottom of the thawing chamber and is used for detecting the weight and the surface temperature of the food to be thawed;
heating means for heating the thawing chamber;
control means for:
acquiring the weight and the surface temperature in real time;
when the thawing chamber is detected to be in a thawing mode, obtaining the currently set thawing duration;
determining the turn-on rate corresponding to the weight according to a preset corresponding relation between the weight and the turn-on rate, wherein the turn-on rate is used as the initial turn-on rate of the heating device;
and calculating the unfreezing rate according to the surface temperature and the unfreezing duration, and adjusting the current on-time rate of the heating device according to the unfreezing rate.
2. The refrigerator as claimed in claim 1, wherein the predetermined weight-to-power-on rate relationship is a predetermined weight interval-to-power-on rate relationship; then, the determining, according to a preset correspondence between the weight and the turn-on rate, the turn-on rate corresponding to the weight as an initial turn-on rate of the heating device specifically includes:
when the thawing chamber is detected to be in a thawing mode, determining a weight interval where the weight of the food to be thawed is located according to the weight of the food to be thawed obtained currently; the weight interval is obtained by dividing in advance;
determining the turn-on rate corresponding to the weight interval as the initial turn-on rate of the heating device according to the corresponding relation between the preset weight interval and the turn-on rate;
and controlling the heating device to start to operate according to the initial turn-on rate.
3. The refrigerator as claimed in claim 1, wherein the calculating a thawing rate according to the surface temperature and the thawing duration, and adjusting the current on-time of the heating device according to the thawing rate, specifically comprises:
when the thawing chamber is detected to be in a thawing mode, calculating the thawing rate of the food to be thawed according to the currently acquired surface temperature and the thawing duration as an initial thawing rate;
calculating the thawing rate of the food to be thawed as a real-time thawing rate according to the currently acquired surface temperature and the elapsed thawing time at intervals of a first preset time;
and adjusting the current on-time rate of the heating device according to the comparison relationship between the initial thawing rate and the real-time thawing rate.
4. The refrigerator as claimed in claim 3, wherein the adjusting of the current on-time rate of the heating device according to the comparison between the initial thawing rate and the real-time thawing rate comprises:
comparing the magnitude relation between the initial thawing rate and the real-time thawing rate;
when the initial thawing rate is greater than the real-time thawing rate, increasing the current on-time rate of the heating device by a preset adjustment step length;
when the initial thawing rate is smaller than the real-time thawing rate, reducing the current on-time rate of the heating device by a preset adjustment step length;
when the initial unfreezing rate is equal to the real-time unfreezing rate, the current on-time rate of the heating device is kept unchanged.
5. The refrigerator as claimed in claim 1, wherein the control means is further for:
when the surface temperature of the food to be unfrozen is detected to reach a preset target temperature, controlling the heating device to stop running;
and adjusting the current temperature gear of the unfreezing chamber to enable the indoor temperature corresponding to the current temperature gear to be consistent with the target temperature.
6. The refrigerator according to any one of claims 1 to 5, wherein a freezing chamber and a refrigerating chamber are provided in the refrigerator; the thawing chamber is arranged in the freezing chamber or the refrigerating chamber;
if the thawing chamber is arranged in the refrigerating chamber, after the weight and the surface temperature are obtained in real time and before the currently set thawing duration is obtained when the thawing chamber is detected to be in the thawing gear, the control device is further configured to:
when the weight obtained at present is inconsistent with the weight obtained at the last moment, judging whether the indoor temperature corresponding to the current temperature gear of the unfreezing chamber is higher than a preset target temperature or not;
if so, recording the current surface temperature of the food to be thawed as a food storage temperature, and when the food storage temperature is less than or equal to the target temperature and the current temperature gear is not adjusted to the temperature gear corresponding to the food storage temperature after a second preset time, adjusting the current temperature gear to enable the current temperature gear to be the temperature gear corresponding to the food storage temperature, and executing: detecting whether the thawing chamber is in a thawing mode;
and if not, detecting whether the thawing chamber is in a thawing mode.
7. The refrigerator as claimed in claim 1, wherein an insulating layer is provided around the thawing chamber; the heat insulation layer is formed by adding heat insulation materials into a frame structure, or adding heat insulation materials into an inner container of the refrigerator, or adding foam into an air duct of the refrigerator; and the heating device comprises a heating wire and a fan, the heating wire and the fan are arranged at the top of the unfreezing chamber, and the heating wire and the fan are matched with the heat preservation layer to form an air supply and return air cavity.
8. A thawing control method of a refrigerator, characterized in that the refrigerator comprises:
the thawing chamber is used for storing food to be thawed;
the sensing device is arranged at the bottom of the thawing chamber and is used for detecting the weight and the surface temperature of the food to be thawed;
heating means for heating the thawing chamber;
the thawing control method of the refrigerator comprises the following steps:
acquiring the weight and the surface temperature in real time;
when the thawing chamber is detected to be in a thawing mode, obtaining the currently set thawing duration;
determining the turn-on rate corresponding to the weight according to a preset corresponding relation between the weight and the turn-on rate, wherein the turn-on rate is used as the initial turn-on rate of the heating device;
and calculating the unfreezing rate according to the surface temperature and the unfreezing duration, and adjusting the current on-time rate of the heating device according to the unfreezing rate.
9. The thawing control method of the refrigerator according to claim 8, wherein the calculating a thawing rate according to the surface temperature and the thawing duration, and adjusting a current on-time of the heating device according to the thawing rate, specifically comprises:
when the thawing chamber is detected to be in a thawing mode, calculating the thawing rate of the food to be thawed according to the currently acquired surface temperature and the thawing duration as an initial thawing rate;
calculating the thawing rate of the food to be thawed as a real-time thawing rate according to the currently acquired surface temperature and the elapsed thawing time at intervals of a first preset time;
and adjusting the current on-time rate of the heating device according to the comparison relationship between the initial thawing rate and the real-time thawing rate.
10. The refrigerator as claimed in claim 9, wherein the adjusting of the current on-time rate of the heating device according to the comparison between the initial thawing rate and the real-time thawing rate comprises:
comparing the magnitude relation between the initial thawing rate and the real-time thawing rate;
when the initial thawing rate is greater than the real-time thawing rate, increasing the current on-time rate of the heating device by a preset adjustment step length;
when the initial thawing rate is smaller than the real-time thawing rate, reducing the current on-time rate of the heating device by a preset adjustment step length;
when the initial unfreezing rate is equal to the real-time unfreezing rate, the current on-time rate of the heating device is kept unchanged.
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KR20180119730A (en) * 2017-04-25 2018-11-05 주식회사 지구마그넷 Multi frequency control method of microwave thawer
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CN208859987U (en) * 2018-06-28 2019-05-14 松下电器研究开发(苏州)有限公司 Thawing apparatus and the refrigerator for having it

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