CN110906655A - Control method for supercooling non-freezing storage and refrigerator - Google Patents
Control method for supercooling non-freezing storage and refrigerator Download PDFInfo
- Publication number
- CN110906655A CN110906655A CN201910960514.4A CN201910960514A CN110906655A CN 110906655 A CN110906655 A CN 110906655A CN 201910960514 A CN201910960514 A CN 201910960514A CN 110906655 A CN110906655 A CN 110906655A
- Authority
- CN
- China
- Prior art keywords
- temperature
- cooled
- cooling chamber
- period
- procedure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 121
- 238000007710 freezing Methods 0.000 title claims abstract description 74
- 230000008014 freezing Effects 0.000 title claims abstract description 73
- 238000004781 supercooling Methods 0.000 title claims abstract description 25
- 238000001816 cooling Methods 0.000 claims abstract description 137
- 230000008569 process Effects 0.000 claims abstract description 58
- 238000010438 heat treatment Methods 0.000 claims abstract description 27
- 230000005684 electric field Effects 0.000 claims abstract description 21
- 238000004321 preservation Methods 0.000 claims abstract description 5
- 230000001186 cumulative effect Effects 0.000 claims description 16
- 230000003247 decreasing effect Effects 0.000 claims description 8
- 230000009467 reduction Effects 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000001934 delay Effects 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 7
- 235000013372 meat Nutrition 0.000 abstract description 6
- 235000013399 edible fruits Nutrition 0.000 abstract description 5
- 235000013311 vegetables Nutrition 0.000 abstract description 5
- 235000013305 food Nutrition 0.000 description 9
- 238000010586 diagram Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000005686 electrostatic field Effects 0.000 description 2
- 239000000796 flavoring agent Substances 0.000 description 2
- 235000019634 flavors Nutrition 0.000 description 2
- 235000016709 nutrition Nutrition 0.000 description 2
- 230000035764 nutrition Effects 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000012055 fruits and vegetables Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/36—Visual displays
-
- 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
Abstract
The invention relates to a supercooling non-freezing storage control method and a refrigerator, wherein after a cooling object is placed in the refrigerator for storage, a supercooling non-freezing function is started, an electric field generating device is started to enable the cooling object to be in an electric field, and then a control unit is used for periodically controlling the temperature of a cooling chamber of the refrigerator, wherein in the first process, the temperature is reduced according to a preset target temperature, in the second process, a heater is started, the temperature is increased according to the preset target temperature and a preset time length, and in the second process, the heating device is turned off and the first process is returned for cycle control. The invention does not need complex control, is simple to realize, can realize supercooling and non-freezing preservation of the cooling materials, and can effectively solve the problem of short-term storage and fresh keeping of the cooling materials such as fruits, vegetables, meat and the like by consumers.
Description
Technical Field
The invention relates to a refrigerator control method and a refrigerator, in particular to a control method for supercooling non-freezing storage and a refrigerator.
Background
With the rapid development of air-cooled refrigerators and the improvement of the fresh-keeping requirements of consumers on cooled objects, the multifunctional refrigerator is rapidly developed, and the requirements on the storage temperature of food in the refrigerator are more and more strict.
Food storage temperature mainly includes fixed single temperature control mode and high temperature, low temperature alternative control mode among the prior art, thereby fixed single low temperature control and high temperature, low temperature alternative control mode long-time low temperature control can all make the cooling object more and more hard produce and freeze, and this can lead to the cooling object inner structure to be destroyed, and nutrition runs off when unfreezing, and fresh-keeping effect is poor, can't be good the flavor of keeping food.
Disclosure of Invention
According to the invention, the temperature of the cooling chamber of the refrigerator is periodically controlled, the first process is carried out according to the preset temperature for cooling, the second process is carried out according to the preset target temperature and the preset time length for heating, the cooling object can be controlled not to be frozen near the freezing point, the preservation period of the cooling object such as fruits and vegetables is prolonged, and meanwhile, the meat is stored in an overcooling and unfreezing mode.
Specifically, the method comprises the following steps:
1. a method of subcooling a non-freezing storage, comprising the steps of:
alternately performing a first step and a second step by subjecting the object to be cooled to the action of an electric field while the object to be cooled is not frozen during the supercooling of the object to be cooled, wherein:
a first step of reducing the temperature of the object to be cooled from a second temperature equal to or higher than the freezing point of the object to be cooled to a first temperature lower than the freezing point of the object to be cooled in a first period;
in the second step, the heating device is started to raise the temperature of the cooled object from a first temperature lower than the freezing point of the cooled object to a second temperature equal to or higher than the freezing point of the cooled object;
after the second procedure is finished, the heating device is closed and the first procedure is returned;
the total duration of the first period of the first procedure is longer than the total duration of the second period of the second procedure;
the temperature reduction speed of the first procedure is less than the temperature rise speed of the second procedure;
the cumulative time length of the cooling process of the object to be cooled in the first period in the first process is equal to or longer than the cumulative time length of the heating process of the object to be cooled in the second process in the second period in the second process.
2. A method of controlling subcooling in a non-freezing storage, comprising the steps of:
selecting a supercooling non-freezing function to enable the cooled object to be under the action of an electric field;
cooling the cooling chamber with corresponding function to refrigerate the cooled object;
alternately performing the first and second processes on the cooling chamber when the temperature of the cooling chamber reaches a second temperature equal to or higher than the freezing point of the object to be cooled;
a first step of reducing the temperature of the cooling chamber from a second temperature equal to or higher than the freezing point of the object to be cooled to a first temperature lower than the freezing point of the object to be cooled in a first period;
in the second procedure, the heating device is started to raise the temperature of the cooling chamber from a first temperature which is less than the freezing point of the cooled object to a second temperature which is equal to or higher than the freezing point of the cooled object;
after the second procedure is finished, the heating device is closed and the first procedure is returned;
the total duration of the first period of the first procedure is longer than the total duration of the second period of the second procedure;
the temperature reduction speed of the first procedure is less than the temperature rise speed of the second procedure;
the cumulative duration of the temperature decreasing process performed by the first process on the cooling chamber in the first period is equal to or longer than the cumulative duration of the temperature increasing process performed by the second process on the cooling chamber in the second period.
Preferably, in the first step, the temperature reduction process is controlled according to the temperature of the cooling chamber detected in real time.
Preferably, in the second step, the temperature increase process in the second step is controlled by timing.
Preferably, the second period is a preset time.
Preferably, the first temperature and the second temperature are preset temperatures.
In addition, the invention also provides a refrigerator for storing the cooled substance without freezing, and the storage method and the control method of the invention are adopted.
Specifically, a refrigerated non-freezing storage refrigerator includes:
a cooling chamber for performing supercooling non-freezing preservation on the cooled object;
a heating device for heating the cooling chamber to raise the temperature thereof in the second step;
the electric field generating device generates an electric field, delays the phase change of water and reduces the freezing probability of a cooling object;
a cooling device for supplying cold air into the cooling chamber;
a control unit for controlling the electric field generating device, the heating device and the refrigerating device to alternately perform a first process in which the temperature of the cooling chamber is lowered from a second temperature equal to or higher than the freezing point of the object to be cooled to a first temperature lower than the freezing point of the object to be cooled within a first period; a second step of raising the temperature of the cooling chamber from a first temperature lower than the freezing point of the object to be cooled to a second temperature equal to or higher than the freezing point of the object to be cooled;
after the second procedure is finished, the heating device is closed and the first procedure is returned;
the total duration of the first period of the first procedure is longer than the total duration of the second period of the second procedure;
the temperature reduction speed of the first procedure is less than the temperature rise speed of the second procedure;
the cumulative duration of the temperature decreasing process performed by the first process on the cooling chamber in the first period is equal to or longer than the cumulative duration of the temperature increasing process performed by the second process on the cooling chamber in the second period.
Preferably, the control unit includes: temperature regulation apparatus, temperature sensor, time-recorder, display, its characterized in that: the temperature adjusting device is used for adjusting the temperature of the cooling chamber to enable the cooling chamber to operate according to a preset temperature; the temperature sensor is used for detecting the temperature of the cooling chamber in real time; the timer is used for setting and monitoring the time length; the display panel is provided with a supercooling unfreezing function selecting key, and a user can select the supercooling unfreezing function according to the requirement.
Preferably, the cooling device is provided with a damper and an air duct, and the damper and the air duct are adjusted to adjust the air volume and/or the air temperature of the cold air supplied into the cooling chamber, so that the temperature in the cooling chamber is decreased to a first temperature in the first step and increased to a second temperature in the second step.
Preferably, the first temperature is set in the range of-10 ℃ to 0 ℃ and the second temperature is set in the range of 0 ℃ to 5 ℃.
The invention can prolong the fresh-keeping time of the cooling materials such as fruits, vegetables and the like, keep the meat in a fresh, tender, supercooled and unfrozen state when being stored, and avoid damaging the internal structure of the cooling materials, causing nutrition loss and further influencing the flavor of the cooling materials.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are merely some embodiments of the present disclosure, and other drawings may be derived from those drawings by those of ordinary skill in the art without inventive effort.
FIG. 1 is a schematic diagram of the control logic of embodiment 2 of the present invention;
FIG. 2 is a schematic diagram of the control logic of embodiment 3 of the present invention;
FIG. 3 is a schematic diagram of the electrical principle in embodiments 2 and 3 of the present invention;
FIG. 4 is a schematic structural view of a refrigerating apparatus according to embodiments 2 and 3 of the present invention;
FIG. 5 is a schematic view of embodiment 1 of the refrigerator according to the present invention;
FIG. 6 is a schematic view of a cooling chamber in examples 1, 2 and 3 of the present invention;
FIG. 7 is a graph showing the temperature change of the cooling chamber in example 2 of the present invention;
FIG. 8 is a graph showing the temperature change of the cooling chamber in example 3 of the present invention;
in the drawings:
1-a refrigerating chamber; 2-a cooling chamber; 3-freezing chamber; 4-a temperature sensor; 5-a heating device; 6-electric field generating device.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals denote the same or similar parts in the drawings, and thus, a repetitive description thereof will be omitted.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the subject matter of the present disclosure can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known methods, devices, implementations, or operations have not been shown or described in detail to avoid obscuring aspects of the disclosure.
The flow charts shown in the drawings are merely illustrative and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.
It is to be understood that, as used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It is to be understood by those skilled in the art that the drawings are merely schematic representations of exemplary embodiments, and that the blocks or processes shown in the drawings are not necessarily required to practice the present disclosure and are, therefore, not intended to limit the scope of the present disclosure.
Example 1:
as shown in fig. 5, the present embodiment provides a supercooling non-freezing storage refrigerator, including:
the cooling chamber 2 can perform supercooling and non-freezing preservation on the cooled object therein.
The heating device 5 heats the cooling chamber to increase its temperature in the second step.
Preferably, the heating device 5 uses a resistance type heater to heat the cooling chamber in a continuous heating mode, so that the freezing probability of the cooling object is reduced, and further the cell tissue freezing damage caused by the generation of frozen ice crystals in the cooling object is reduced.
The electric field generating device 6 generates an electric field to delay the phase change of water and reduce the freezing probability of the cooling object.
Preferably, the electric field generator 6 is a high-voltage electrostatic field generator, and generates a high-voltage electrostatic field, so that the freezing probability of the cooling object is reduced, and further, the freezing damage of cell tissues caused by the generation of frozen ice crystals in the cooling object is reduced.
Preferably, the electric field generating device 6 is set to have a voltage range of 1600V-2200V, which can ensure that most food materials are not frozen, and the electric field always exists under the power-on condition, which can ensure that food is not frozen while being kept fresh to the maximum extent.
Specifically, the cooling device is provided with a damper and an air duct, and adjusts the amount of cold air supplied into the cooling chamber by adjusting the damper and the air duct, so that the temperature in the cooling chamber is reduced to a first temperature in a first step and increased to a second temperature in a second step.
The refrigerating device for generating cold air specifically comprises: the refrigerating device of the embodiment comprises a compressor, a condenser, a condensation preventing pipe, a drying filter, a freezing evaporator and a gas return pipe assembly, and is shown in fig. 4.
The control unit includes: temperature regulation apparatus, temperature sensor 4, time-recorder, display, its characterized in that: the temperature adjusting device is used for adjusting the temperature of the cooling chamber to enable the cooling chamber to operate according to a preset target temperature; the temperature sensor 4 is used for detecting the temperature of the cooling chamber in real time; the timer is used for setting a second period duration; the display panel is provided with a supercooling unfreezing function selecting key, and a user can select the supercooling unfreezing function according to the requirement.
A control means for controlling the heating device 5, the electric field generating device 6, and the cooling device to alternately perform a first step of reducing the temperature of the cooling chamber from a second temperature equal to or higher than the freezing point of the object to be cooled to a first temperature lower than the freezing point of the object to be cooled in a first period and a second step of reducing the temperature of the cooling chamber from a second temperature equal to or higher than the freezing point of the object to be cooled in the first period; a second step of raising the temperature of the cooling chamber from a first temperature lower than the freezing point of the object to be cooled to a second temperature equal to or higher than the freezing point of the object to be cooled;
after the second process is finished, the heating device 5 is closed and the process returns to the first process;
the total duration of the first period of the first procedure is longer than the total duration of the second period of the second procedure;
the temperature reduction speed of the first procedure is less than the temperature rise speed of the second procedure;
the cumulative duration of the temperature decreasing process performed by the first process on the cooling chamber in the first period is equal to or longer than the cumulative duration of the temperature increasing process performed by the second process on the cooling chamber in the second period.
Preferably, the temperature sensor 4 is provided in the cooling chamber.
Preferably, the heating device 5 is arranged at the side or the bottom of the cooling chamber 2, and preferably, the heating device is arranged at the bottom of the cooling chamber 2.
Preferably, the electric field generating device 6 is disposed at the top of the refrigerator.
After the user puts into the cooling chamber with the cooling object, select the not function of freezing of subcooling, heat up and lower the temperature through periodic accurate control cooling chamber, need not complicated operation, can effectively solve perishable cooling object short-term storage fresh-keeping problem.
Example 2:
the following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings 1: a method of controlling subcooling in a non-freezing storage, comprising the steps of:
selecting the supercooling unfreezing function, and starting the electric field generating device 6 to enable the cooled object to be under the action of the electric field;
cooling the cooling chamber 2 with the corresponding function, and refrigerating the cooled object;
alternately performing the first and second processes on the cooling chamber 2 when the temperature of the cooling chamber 2 reaches a second temperature equal to or higher than the freezing point of the object to be cooled;
a first step: cooling the temperature of the object to be cooled from a second temperature equal to or higher than the freezing point of the object to be cooled to a first temperature lower than the freezing point of the object to be cooled in a first period;
specifically, the first temperature of the cooling chamber 2 is preset as T1, the control unit controls the refrigerating device and the temperature adjusting device to increase the cold air input of the cooling chamber 2, namely, an air door and an air channel of the temperature adjusting device are opened, the rotating speed of a compressor in the refrigerating device is increased to increase the cold air input of the cooling chamber 2, the temperature of the cooling chamber 2 is reduced by taking the T1 as a target, the temperature sensor 4 is adopted to detect the temperature of the cooling chamber 2 in real time, and when the temperature sensor 4 detects that the temperature of the cooling chamber 2 reaches a first starting temperature point T1ON1When the air door of the cooling chamber 2 is opened, cold air enters the cooling chamber 2, so that the temperature of the cooling chamber 2 is reduced; when the temperature sensor 4 detects that the temperature of the cooling chamber 2 reaches the first stop temperature point TOFF1At this time, the damper of the cooling compartment 2 is closed to prevent the entry of cold air into the cooling compartment 2.
Preferably, TON1＝T1+TB1/2,TOFF1＝TON1–TB2/2，TB1And TB2For a known parameter, TB1The floating temperature T of the starting point of the instantaneous freezing chamber in the starting process of the compressorB2The temperature difference between the instant freezing chamber start and stop is T less than 0 DEG CB1,TB2≤2℃。
When the temperature sensor 4 detects that the temperature of the cooling chamber 2 is less than or equal to T1, the first process is stopped and the second process is started to be executed, so that the cooled objects stored in the cooling chamber 2 for short-term fresh keeping are kept in a fresh and tender state, and the phenomenon that the cooled objects are frozen due to the fact that the temperature of the cooling chamber 2 continuously drops is avoided.
Preferably, the first temperature T1 is in the range of-10 ℃ to 0 ℃, and according to experimental data, the temperature range can effectively prevent fruits, vegetables and meat cooling materials from being frozen. In the present embodiment, T1 is more preferably-3 ℃.
In the second step, the heating device 5 is turned on to raise the temperature of the object to be cooled from a first temperature lower than the freezing point of the object to be cooled to a second temperature equal to or higher than the freezing point of the object to be cooled;
specifically, the second temperature of the cooling chamber 2 is preset to be T0, the control unit controls the refrigeration device and the temperature adjustment device to stop cold air input into the cooling chamber 2, that is, closes an air door and an air duct of the temperature adjustment device, and controls a compressor in the refrigeration device to stop rotating, so that the temperature of the cooling chamber 2 slowly rises with a target of T0 due to heat exchange with the outside, and freezing of a cooling object due to continuous cooling can be avoided. The preset second period time is t0, a timer is adopted to start timing, when the accumulated time of the timer reaches t0, the second procedure is stopped and the first procedure is started, and the phenomenon that the cooling object is rotten due to the fact that a large amount of bacteria breed because the temperature of the cooling chamber 2 continues to rise can be avoided.
Preferably, the second temperature T0 is in the range of 0 ℃ to 5 ℃, which is effective in preventing the coolant from being spoiled by a large amount of bacteria according to experimental data. In the present embodiment, T0 is more preferably set to 0 ℃.
Preferably, the second period time T0 ranges from 24h to T0 > 0h, specifically, the value of T0 is set empirically, and when the accumulated time of the timer reaches T0, the temperature of the cooling chamber 2 can reach the preset temperature T0 under the mediation of the control unit.
Further preferably, the total duration of the first period of the first process is longer than the total duration of the second period of the second process; the temperature reduction speed of the first procedure is less than the temperature rise speed of the second procedure; the cumulative duration of the temperature decreasing process performed by the first process on the cooling chamber in the first period is equal to or longer than the cumulative duration of the temperature increasing process performed by the second process on the cooling chamber in the second period. Therefore, the food can be ensured to be slowly cooled, and if the food is frozen, the temperature is quickly increased to convert the food from a frozen state to a non-frozen state, so that the food is kept from being frozen for storage.
The temperature of the cooling chamber 2 of the present embodiment varies within one cycle as shown in fig. 7.
The control method provided by the embodiment can realize supercooling and unfreezing storage of the fruit, vegetable and meat chillings, and can also realize supercooling and unfreezing storage of chillings with other freezing points by changing the numerical values of T0, T0 and T1.
This embodiment is through carrying out periodic accurate control to 2 intensifications of cooling chamber and cooling temperature, has avoided the freezing problem of the cooling thing that leads to of long-term low temperature in fixed single temperature control mode and the high, low temperature alternative control mode, and control is simple easily operated, realizes that the cooling thing does not freeze near freezing point, can effectively solve the fresh-keeping problem of short-term storage of cooling thing.
Example 3:
as shown in fig. 2, this embodiment provides another control method for supercooling-freezing-free storage, and compared to embodiment 2, this embodiment exchanges the execution sequence of the first process and the second process, that is, after the user selects the supercooling-freezing-free function, the second process is executed first, and then the first process is executed and the cycle control is performed, which is the same as embodiment 2, and details are not repeated here. The temperature of the cooling chamber of this embodiment varies within one cycle as shown in fig. 8.
In summary, the present invention periodically controls the temperature of the cooling chamber of the refrigerator, wherein the first process is performed according to a preset temperature, and the second process is performed according to a preset target temperature and a preset time length, which are alternately performed. The invention does not need complex control, is simple to realize, can keep the cooling object to be supercooled and not frozen near the freezing point, can effectively solve the short-term storage and fresh-keeping problem of the cooling object of fruits, vegetables and meats for consumers, and can realize the supercooled and not frozen storage.
Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the present disclosure is not limited to the precise arrangements, instrumentalities, or instrumentalities described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (10)
1. A supercooling non-freezing storage method, characterized in that:
alternately performing a first step and a second step by subjecting the object to be cooled to the action of an electric field while the object to be cooled is not frozen during the supercooling of the object to be cooled, wherein:
in the first step, the temperature of the object to be cooled is reduced from a second temperature equal to or higher than the freezing point of the object to be cooled to a first temperature lower than the freezing point of the object to be cooled in a first period;
in the second step, a heating device is turned on to raise the temperature of the object to be cooled from the first temperature lower than the freezing point of the object to be cooled to the second temperature equal to or higher than the freezing point of the object to be cooled;
closing the heating device after the second procedure is finished;
the total duration of the first period of the first procedure is longer than the total duration of the second period of the second procedure;
the temperature reduction speed of the first procedure is less than the temperature rise speed of the second procedure;
the cumulative time length of the first step of performing the temperature decreasing process on the object to be cooled in the first period is equal to or longer than the cumulative time length of the second step of performing the temperature increasing process on the object to be cooled in the second period.
2. A method for controlling storage without freezing during supercooling, characterized by:
selecting a supercooling non-freezing function to enable the cooled object to be under the action of an electric field;
cooling the cooling chamber with corresponding function to refrigerate the cooled object;
alternately performing the first and second processes on the cooling chamber when the temperature of the cooling chamber reaches a second temperature equal to or higher than the freezing point of the object to be cooled;
in the first step, the temperature of the cooling chamber is reduced from a second temperature equal to or higher than the freezing point of the object to be cooled to a first temperature lower than the freezing point of the object to be cooled in a first period;
in the second step, the heating device is turned on to raise the temperature of the cooling chamber from the first temperature lower than the freezing point of the object to be cooled to the second temperature equal to or higher than the freezing point of the object to be cooled;
after the second procedure is finished, the heating device is closed and the first procedure is returned;
the total duration of the first period of the first procedure is longer than the total duration of the second period of the second procedure;
the temperature reduction speed of the first procedure is less than the temperature rise speed of the second procedure;
the cumulative duration of the temperature decreasing process performed by the first process on the cooling chamber in the first period is equal to or longer than the cumulative duration of the temperature increasing process performed by the second process on the cooling chamber in the second period.
3. The method according to any one of claims 1 to 2, wherein in the first step, the temperature lowering process is controlled based on a real-time detected temperature of the cooling chamber.
4. The method according to any one of claims 1 to 3, wherein in the second step, the temperature rise process in the second step is controlled by timing.
5. The method of claim 4, wherein the second period is a preset time.
6. The method according to any one of claims 1 to 5, wherein the first and second temperatures are preset temperatures.
7. A refrigerator is characterized in that the refrigerator is provided with:
a cooling chamber for performing supercooling non-freezing preservation on the cooled object;
the electric field generating device generates an electric field, delays the phase change of water and reduces the freezing probability of a cooling object;
a heating device for heating the cooling chamber to raise the temperature thereof in the second step;
a cooling device for supplying cold air into the cooling chamber;
a control unit that controls the electric field generating device, the heating device, and the cooling device to alternately perform a first step of reducing the temperature of the cooling chamber from a second temperature equal to or higher than a freezing point of the object to be cooled to a first temperature lower than the freezing point of the object to be cooled within a first period, and a second step of reducing the temperature of the cooling chamber from a second temperature equal to or higher than the freezing point of the object to be cooled within the first period; in the second step, the temperature of the cooling chamber is raised from the first temperature lower than the freezing point of the object to be cooled to the second temperature equal to or higher than the freezing point of the object to be cooled;
the total duration of the first period of the first procedure is longer than the total duration of the second period of the second procedure;
the temperature reduction speed of the first procedure is less than the temperature rise speed of the second procedure;
the cumulative duration of the temperature decreasing process performed by the first process on the cooling chamber in the first period is equal to or longer than the cumulative duration of the temperature increasing process performed by the second process on the cooling chamber in the second period.
8. The refrigerator according to claim 7, wherein the control unit comprises: temperature regulation apparatus, temperature sensor, time-recorder, display, its characterized in that: the temperature adjusting device is used for adjusting the temperature of the cooling chamber to enable the cooling chamber to operate according to a preset temperature; the temperature sensor is used for detecting the temperature of the cooling chamber in real time; the timer is used for setting and monitoring the time length; the display panel is provided with a supercooling unfreezing function selecting key, and a user can select the supercooling unfreezing function according to the requirement.
9. The refrigerator according to claim 7, wherein the cooling device is provided with a damper and an air duct, and the damper and the air duct are adjusted to adjust an air volume and/or an air temperature of the cold air supplied into the cooling chamber, so that the temperature in the cooling chamber is lowered to a first temperature in the first step and raised to a second temperature in the second step.
10. The refrigerator according to any one of claims 7 to 9, wherein the first temperature is set in a range of-10 ℃ to 0 ℃ and the second temperature is set in a range of 0 ℃ to 5 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910960514.4A CN110906655A (en) | 2019-10-10 | 2019-10-10 | Control method for supercooling non-freezing storage and refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910960514.4A CN110906655A (en) | 2019-10-10 | 2019-10-10 | Control method for supercooling non-freezing storage and refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110906655A true CN110906655A (en) | 2020-03-24 |
Family
ID=69815336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910960514.4A Pending CN110906655A (en) | 2019-10-10 | 2019-10-10 | Control method for supercooling non-freezing storage and refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110906655A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101375120A (en) * | 2006-02-15 | 2009-02-25 | Lg电子株式会社 | Apparatus for supercooling, and method of operating the same |
| CN106461304A (en) * | 2014-05-20 | 2017-02-22 | 三菱电机株式会社 | Refrigerator |
| CN107788327A (en) * | 2017-10-20 | 2018-03-13 | 合肥华凌股份有限公司 | Multi-phase containment, which is realized, does not freeze long fresh method, refrigeration plant and readable storage medium storing program for executing |
-
2019
- 2019-10-10 CN CN201910960514.4A patent/CN110906655A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101375120A (en) * | 2006-02-15 | 2009-02-25 | Lg电子株式会社 | Apparatus for supercooling, and method of operating the same |
| CN106461304A (en) * | 2014-05-20 | 2017-02-22 | 三菱电机株式会社 | Refrigerator |
| CN107788327A (en) * | 2017-10-20 | 2018-03-13 | 合肥华凌股份有限公司 | Multi-phase containment, which is realized, does not freeze long fresh method, refrigeration plant and readable storage medium storing program for executing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107788327B (en) | Multi-stage control method for realizing non-freezing freshness-growing effect, refrigeration equipment and readable storage medium | |
| CN108870857B (en) | Meat supercooling preservation control method, controller and refrigerator | |
| CN106766577B (en) | Frosting degree detection method and device for air-cooled refrigerator | |
| Modarres et al. | Experimental investigation of energy consumption and environmental impact of adaptive defrost in domestic refrigerators | |
| CN110906646A (en) | Food non-freezing storage control method and refrigerator | |
| CN108870855A (en) | Meat preservation by partial control method, controller and refrigerator | |
| CN110906645A (en) | Control method for supercooling non-freezing storage and refrigerator | |
| CN110671886A (en) | Method, device and equipment for controlling overcooling storage of food in refrigerator and refrigerator system | |
| CN110906653A (en) | Control method for supercooling non-freezing storage and refrigerator | |
| JP4985833B2 (en) | Supercooling control refrigerator | |
| KR101594386B1 (en) | Methods for defrosting a kimchi refrigerator having a plural of evaporators | |
| CN110671887B (en) | Method, device, equipment and refrigerator system for controlling storage of food in refrigerator compartment | |
| CN110906650A (en) | Control method for supercooling non-freezing storage and refrigerator | |
| CN110906659A (en) | Control method for supercooling non-freezing storage and refrigerator | |
| CN111023687A (en) | Food non-freezing storage control method and refrigerator | |
| JP4840469B2 (en) | Supercooling control refrigerator | |
| CN110906655A (en) | Control method for supercooling non-freezing storage and refrigerator | |
| CN110906660A (en) | Control method for supercooling non-freezing storage and refrigerator | |
| CN110906648A (en) | Control method for supercooling non-freezing storage and refrigerator | |
| CN114576903A (en) | Method for controlling refrigerator | |
| CN110906651A (en) | Control method for supercooling non-freezing storage and refrigerator | |
| CN110906647A (en) | Food non-freezing storage control method and refrigerator | |
| CN110906658A (en) | Food non-freezing storage control method and refrigerator | |
| CN110906649A (en) | Control method for supercooling non-freezing storage and refrigerator | |
| CN110906656A (en) | Control method for supercooling non-freezing storage and refrigerator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200324 |