CN111189295B - Instantaneous freezing storage method, refrigerator control method, control system and refrigerator - Google Patents

Instantaneous freezing storage method, refrigerator control method, control system and refrigerator Download PDF

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Publication number
CN111189295B
CN111189295B CN201911045263.3A CN201911045263A CN111189295B CN 111189295 B CN111189295 B CN 111189295B CN 201911045263 A CN201911045263 A CN 201911045263A CN 111189295 B CN111189295 B CN 111189295B
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China
Prior art keywords
temperature
cooling
instant freezing
freezing chamber
instant
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CN201911045263.3A
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CN111189295A (en
Inventor
辛海亚
钱梅双
王飞
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Gree Electric Appliances Inc of Zhuhai
Hefei Kinghome Electrical Co Ltd
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Gree Electric Appliances Inc of Zhuhai
Hefei Kinghome Electrical 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
    • 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
    • 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
    • F25D2400/30—Quick 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
    • 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 method for storing instant freezing, a control method for the method, a control system for the method and a refrigerator, and the refrigerator realizes the storage of the instant freezing of a cooled object by performing three processes of supercooling and cooling, supercooling and removing and conventional refrigeration and preservation on the cooled object. The cooling process is carried out stage cooling control on the instant freezing chamber, so that after the cooling object stably enters the supercooling state, supercooling is relieved in a mode of increasing the rotating speed of the compressor, the cooling object rapidly passes through the maximum ice crystal zone, instant freezing of the cooling object is realized, the cooling object is well cut after being taken out in the conventional refrigeration preservation process, nutrition loss caused by a large amount of juice of the cooling object is avoided, and the storage requirement of a user can be met.

Description

Instantaneous freezing storage method, refrigerator control method, control system and refrigerator
Technical Field
The invention relates to a storage method, a refrigerator control method, a control system and a refrigerator, in particular to a transient freezing storage method, a refrigerator control method, a control system and a refrigerator.
Background
In order to better maintain the nutrition of frozen food, the food is generally preserved by adopting a freezing mode such as common freezing, quick freezing and the like and a supercooling mode, and the traditional common freezing has the defects of uneven temperature control in a freezing chamber, long-time stay in a maximum ice crystal generation zone and the like; although the rapid freezing can rapidly pass through the largest ice crystal generation zone, the production cost is higher, and the rapid freezing is not beneficial to popularization and application on a refrigerator; in the prior art, the problems that the supercooling is released in advance due to uneven temperature reduction in the supercooling and cooling process, the supercooling cannot be stably performed, the supercooling depth is shallow, the supercooling release effect is poor due to the increase of the wind speed or the wind quantity, and the like are caused, and the problems that the food nutrition loss, the flavor is poor, the quality is reduced, the user needs cannot be met and the like are further caused.
Disclosure of Invention
According to the invention, through carrying out stage cooling control on the cooling object in the supercooling cooling stage, the supercooling is released by adopting a mode of increasing the rotating speed of the compressor, the cooling object is kept in a good-cut state in the conventional refrigerating process, no complex operation is needed, uniform reduction of the temperature of the cooling object in the instant freezing process can be realized, nutrition preservation is good, and quality is not reduced.
Specifically:
the invention provides a transient freezing storage method, which is provided with a supercooling cooling process, a supercooling releasing process and a conventional refrigerating storage process in the transient freezing storage process, wherein:
s1: cooling the cooling object in stages to enable the cooling object to enter a supercooling state;
s2: a supercooling releasing step of releasing the supercooling state of the cooling object by increasing the rotation speed of the compressor;
s3: and in the conventional refrigeration preservation process, conventional refrigeration preservation is carried out on the cooling object after supercooling is released.
The invention also provides a refrigerator control method, the refrigerator is provided with a compartment with a transient freezing storage function, and during the transient freezing storage period, the compartment is subjected to the following transient freezing control:
s1: cooling the cooling object in stages to enable the cooling object to enter a supercooling state;
s2: a supercooling releasing process for releasing supercooling state of the cooling object by increasing rotation speed of the compressor;
s3: and performing a conventional refrigeration preservation process, and performing conventional refrigeration preservation on the cooling object after supercooling release.
Preferably, each stage of the supercooling stage cooling process adopts intermittent air supply, and when the supercooling stage cooling process is in the nth stage: the storage temperature of the instant freezing chamber reaches T ON n＝Tn+T B1 And/2, opening the air door of the instant freezing compartment; the storage temperature of the instant freezing chamber reaches T off n＝T ON n-T B2 And (2) closing a transient freezing compartment air door, wherein Tn refers to the preset temperature of the nth stage; t (T) B1 Refers to the floating temperature T of the starting point of the instant freezing compartment in the starting process of the compressor B2 The temperature difference, T, between the start and stop of the instant freezing room ON n>Tn>T off n。
Preferably, the supercooling cooling process S1 includes:
s11: the temperature of the instant freezing compartment is regulated by taking T1 as a target, the duration of a preset cooling step S11 is a first cooling time T1, a timer is adopted for timing, and in the time T1, when the temperature of the instant freezing compartment reaches a first starting temperature point T ON1 When the temperature of the instant freezing room reaches the first stop temperature point T, the air door of the instant freezing room is opened OFF1 Closing the damper of the instant freezing chamber, wherein T ON1 ＝T1+T B1 /2,T OFF1 ＝T ON1 –T B2 And/2, stopping executing the step S11 when the accumulated time length of the timer reaches t1;
s12: presetting a second cooling target of a cooling object as T2, enabling the temperature of the instant freezing compartment to be adjusted and cooled by taking the T2 as the target, presetting the duration of a cooling step S12 as a second cooling time T2, timing by a timer, and when the temperature of the instant freezing compartment reaches a second starting temperature point T in the time T2 ON2 When the temperature of the instant freezing room reaches the second stop temperature point T, the air door of the instant freezing room is opened OFF2 Closing the damper of the instant freezing chamber, wherein T ON2 ＝T2+T B1 /2,T OFF2 ＝T ON2 –T B2 And/2, stopping executing the step S12 when the accumulated time length of the timer reaches t 2;
sequentially cooling step by step until S1n;
s1n: presetting an nth cooling target of a cooling object as Tn, enabling the temperature of the instant freezing compartment to be adjusted and cooled by taking Tn as the target, presetting the duration of a cooling step S1n as nth cooling time Tn, timing by adopting a timer, and when the temperature of the instant freezing compartment reaches an nth starting temperature point T within Tn time ONn When the temperature of the instant freezing room reaches the nth stop temperature point T, the air door of the instant freezing room is opened OFFn Closing the damper of the instant freezing chamber, wherein T ONn ＝Tn+T B1 /2,T OFFn ＝T ONn –T B2 And (2), wherein n is more than or equal to 1, n is a natural number, and when the accumulated time length of the timer reaches tn, the execution of the step S1n is stopped.
Preferably, in step S11, the first cooling target of the cooling object is preset to be T1 according to the type, volume, weight and external environment temperature of the cooling object.
Preferably, T1 is in the range of 0 ℃ to 5 ℃ and T1 is in the range of 2 to 4 hours.
Preferably, the final cooling target range of the supercooling cooling process is-5 ℃ to-20 ℃, and the cooling temperature difference range between each step in the steps S12 to S1n is 0 ℃ to 2 ℃ but not 0 ℃.
Preferably, the supercooling release process S2: and (3) increasing the rotation speed of the compressor to release the supercooling state of the cooling object, presetting the duration of the step S2 to be t, adopting a timer to count, and stopping executing the step S2 when the accumulated time length of the timer reaches t, wherein the range of t is 0-10 h.
Preferably, the conventional refrigeration preservation process S3: the conventional refrigeration preservation temperature of the preset cooling object is T, and when the temperature of the instant freezing room reaches the conventional refrigeration preservation starting temperature point T ON When the temperature of the instant freezing room reaches the normal refrigerating storage stop temperature point T, the air door of the instant freezing room is opened OFF Closing the damper of the instant freezing chamber, wherein T ON ＝T+T B1 /2,T OFF ＝T ON –T B2 /2。
Preferably, in step S11, the compressor rotation speed is set to M2; in steps S12 to S1n, the rotation speed of the compressor is set as M1; in step S2, the compressor rotation speed is set to M2; in step S3, the compressor rotational speed is set to M1, where M2> M1.
Preferably, M2 is the maximum value of the compressor speed.
Preferably, M1 ranges from 1200rpm to 1400rpm and M2 ranges from 3800rpm to 4500rpm.
The invention also provides a control system, and the control method provided by the invention is adopted.
Preferably, the control system comprises: controller, temperature regulating device, temperature sensor, time-recorder, its characterized in that: the controller receives information from the temperature sensor and the timer and controls the temperature regulating device to regulate the temperature of the instant freezer; the temperature adjusting device is used for adjusting the instant freezing compartment to operate according to a preset temperature; the temperature sensor is used for detecting the temperature of the instant freezing compartment in real time; and the timer is used for setting and monitoring the duration.
In addition, the invention also provides a refrigerator provided with the instant freezing compartment, and the control system or the control method provided by the invention is adopted.
Preferably, the refrigerator further includes a refrigerating system for generating cool air supplied to the flash compartment.
The invention can lead the temperature of the cooling object to drop uniformly and uniformly, stably enter a supercooling state with proper depth, has good supercooling release effect, avoids nutrition loss caused by a large amount of juice of the cooling object flowing out, and can meet the storage requirement of users.
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 examples of the present disclosure and other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a schematic diagram of the control logic of embodiment 2 of the present invention;
fig. 2 is a schematic structural diagram of a refrigeration system according to embodiments 1 and 2 of the present invention;
FIG. 3 is a schematic flow diagram of a refrigeration system according to embodiments 1 and 2 of the present invention;
FIG. 4 is a schematic view showing a schematic structure of a refrigerator according to embodiment 1 of the present invention;
FIG. 5 is a schematic control diagram of embodiments 1 and 2 of the present invention;
fig. 6 is a schematic diagram showing a change in temperature of a cooling object in embodiment 2 of the present invention.
In the accompanying drawings:
1-a refrigerating chamber; 2-a flash chamber; 3-freezing chamber;
4-a refrigeration system; 41-a compressor; 42-a condenser; 43-anti-coagulation tube; 44-drying the filter; 45-capillary; 46-freezer evaporator; 47-an air return tube assembly; 48-a return air heat exchange section;
5-a control system; 51-a controller; 52-a display; 53-a temperature sensor; 54-temperature regulating device; 55-frequency conversion board; 56-timer.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many 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 the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar parts, 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 disclosed aspects may be practiced without one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.
The flow diagrams depicted in the figures are exemplary only, and do not necessarily include all of the elements and operations/steps, nor must they 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 order of actual execution may be changed according to actual situations.
It is to be understood that as used herein, the term "and/or" includes any one of the associated listed items and all combinations of one or more.
Those skilled in the art will appreciate that the drawings are schematic representations of example embodiments and that the modules or flows in the drawings are not necessarily required to practice the present disclosure, and therefore, should not be taken to limit the scope of the present disclosure.
The invention aims to provide a transient freezing storage method, a refrigerator control method, a control system and a refrigerator, which are used for carrying out transient freezing storage on a cooling object, and rapidly removing a supercooling state to enable the cooling object to be frozen instantly after the cooling object is stably in a supercooling state, so that the transient freezing storage of the cooling object is realized, and the problems of uneven temperature reduction, shallow supercooling depth, poor preservation effect of the cooling object after supercooling is removed, juice outflow, less nutrition retention and flavor and quality reduction are solved.
For further explanation, the present invention is exemplified by an air-cooled refrigerator, and the following specific examples are provided. The air-cooled refrigerator takes cold air as a carrier, and the rotating speed of the refrigerating fan can be kept unchanged in the storage process.
Example 1:
as shown in fig. 4, the present embodiment provides a flash storage refrigerator including:
the flash chamber 2 is used for accommodating a cooling object and storing the cooling object in a flash manner.
A refrigerating system 4 for controllably supplying cool air to the flash chamber 2 to lower or maintain the temperature of the flash chamber 2 according to each preset temperature. The method specifically comprises the following steps: compressor 41, condenser 42, anti-condensation tube 43, dry filter 44, capillary tube 45, freezer evaporator 46, muffler assembly 47, and return air heat exchange section 48.
The control system 5 is used for controlling the refrigerating system 4 to provide cool air for the instant freezing chamber 2, controlling the temperature regulating device 54 to regulate the temperature of the instant freezing chamber 2, enabling the temperature of the instant freezing chamber 2 to be reduced or kept according to the preset target temperature of each step, and realizing instant freezing storage of a cooling object.
Preferably, the refrigerator further includes a condenser fan for enhancing a heat exchanging effect of the condenser.
Preferably, the control system 5 comprises: a controller 51, a built-in chip processor, for receiving information from the temperature sensor 53 and the timer 56, and controlling the temperature adjusting device 54 and the refrigerating system 4 to adjust the temperature of the flash chamber 2; a temperature adjusting device 54 for adjusting the operation of the flash chamber 2 according to a preset target temperature; a temperature sensor 53 for detecting the temperature of the flash chamber 2 in real time; a timer 56 for setting and monitoring time; a frequency conversion plate 55 for adjusting the rotation speed of the compressor 41; the display 52, there is a select button of the instant freezing function on the display 52 panel, the user can choose whether the cooling object needs to implement the instant freezing function.
Specifically, after the user puts the cooling object into the instant freezing chamber 2, the user presses an instant freezing function selection button on the refrigerator display 52 to store the instant freezing object. In the process of implementing the instant freezing storage, the control system 5 controls and regulates the compressor 41 in the refrigerating system 4 to operate at different rotating speeds according to the preset target temperature of each step to generate cold air finally supplied to the instant freezing chamber 2.
Preferably, the control system 5 changes the rotation speed of the compressor 41 through the inverter board 55, and the amount of cold air generated by the refrigeration system 4 when the rotation speed of the compressor 41 is high is larger than the amount of cold air generated when the rotation speed is low.
Preferably, the control system 5 accumulates the time by the timer 56 to control the duration of each step in the instant freezing storage process, specifically, the running duration of each step in the instant freezing storage process is preset, and when the accumulated duration reaches the preset duration, the control system 5 controls the current step to stop and enter the next step.
Preferably, the temperature of the instant freezing chamber 2 is detected in real time through the temperature sensor 53, and in the implementation process of each step, when the temperature sensor 53 detects that the temperature of the instant freezing chamber 2 reaches the starting temperature point set in the step, the control system 5 controls the opening of a damper of the instant freezing chamber 2, so that cold air generated by the refrigerating system 4 enters the instant freezing chamber 2 to reduce the temperature of the instant freezing chamber 2; when the temperature sensor 53 detects that the temperature of the instant freezing chamber 2 reaches the shutdown temperature point set in the step, the control system 5 controls the air door of the instant freezing chamber 2 to be closed, and prevents cold air from entering the instant freezing chamber 2.
According to the embodiment, the temperature control of the instant freezing chamber 2 is realized through the control system 5, so that the cooling object is stored according to the preset temperature and the preset time length of each step in the instant freezing storage process, no complex operation is needed, the temperature of the cooling object is uniformly reduced in the instant freezing process, and nutrition and flavor are kept well.
Example 2:
as shown in fig. 1, the present embodiment provides a method for controlling a transient freeze storage, which includes:
s1: and (3) performing supercooling and cooling processes, and cooling the cooling object in stages to enable the cooling object to enter a supercooling state.
Specific:
s11: the duration of the preset step S11 is T1, the first cooling target of the preset cooling object is T1, and the temperature of the flash chamber 2 is adjusted by taking T1 as a target, wherein the control system 5 controls the compressor 41 to operate at a rotation speed M2 through the frequency conversion board 55, controls the rotation speed of the condenser fan to operate at P1, and controls the capillary flow to be V1. During the temperature adjustment, the temperature sensor 53 detects the real-time temperature inside the flash chamber 2, and when the temperature of the flash chamber 2 reaches the first start-up temperature point T ON1 When the air door of the instant freezing chamber 2 is controlled to be opened, cold air generated by the refrigerating system 4 enters the instant freezing chamber 2, and the temperature of the cold air is reduced; when the temperature of the instant freezing chamber 2 is detected to reach the first stop temperature point T OFF1 And when the air door of the instant freezing chamber 2 is controlled to be closed, the cold air is prevented from entering the instant freezing chamber 2. This step is performed by using the timer 56, and when the accumulated time length of the timer 56 reaches t1, the execution of step S11 is stopped.
Preferably, the first cooling target of the cooling object is preset to be T1 according to the type, volume, weight and external environment temperature of the cooling object.
Preferably, the first cooling target T1 may be set by the user or in a control program, and if set in the control program, the user may select in a menu bar of the refrigerator.
Preferably, the first start-up temperature point T ON1 ＝T1+T B1 First shutdown temperature point T OFF1 ＝T ON1 –T B2 /2。
Preferably T B1 Refers to the floating temperature of the starting point of the instant freezing chamber 2 in the starting process of the compressor 41; t (T) B2 Refers to the temperature difference, T, of the instant freezing chamber 2 B1 And T B2 Is a known parameter, wherein T B1 In the range of less than 0 ℃ T B1 ,T B2 In the range of T B2 ≤2℃。
Preferably, the range of the first cooling target T1 is more than or equal to 0 ℃ and less than or equal to 5 ℃, and the duration T1 of the step S11 is more than or equal to 2h and less than or equal to 1 and less than or equal to 4h.
Preferably, if the temperature of the object to be cooled placed in the instant freezing chamber 2 is less than 0 ℃, the control system 5 in step S11 can adjust the temperature of the instant freezing chamber 2 to rise to a temperature above 0 ℃, which is conducive to uniform decrease of the entire temperature of the instant freezing chamber 2 in the subsequent step, and also makes uniform and uniform decrease of the internal and external temperatures of the object to be cooled.
S12: the duration of the preset step S12 is T2, the second cooling target of the cooling object is T2, and the temperature of the flash chamber 2 is adjusted by taking T2 as a target, wherein the control system 5 controls the compressor 41 to operate at a rotation speed M1 through the frequency conversion board 55, the condenser fan operates at a rotation speed P1, and the capillary flow is V1. During the temperature adjustment, the temperature sensor 53 detects the real-time temperature inside the flash chamber 2, and when the temperature of the flash chamber 2 reaches the second start-up temperature point T ON2 When the air door of the instant freezing chamber 2 is controlled to be opened, cold air generated by the refrigerating system 4 enters the instant freezing chamber 2, and the temperature of the cold air is reduced; when the temperature of the instant freezing chamber 2 is detected to reach the second stop temperature point T OFF2 And when the air door of the instant freezing chamber 2 is controlled to be closed, the cold air is prevented from entering the instant freezing chamber 2. This step is performed by using the timer 56, and when the accumulated time length of the timer 56 reaches t2, the execution of step S12 is stopped.
Preferably, the second start-up temperature point T ON2 ＝T2+T B1 /2, second shutdown temperature point T OFF2 ＝T ON2 –T B2 /2。
Preferably, the range of the second cooling target T2 is more than or equal to minus 2 ℃ and less than 0 ℃, and the duration T2 of the step S12 is more than or equal to 2h and less than or equal to 4h.
S13: the duration of the preset step S13 is T3, the third cooling target of the preset cooling object is T3, and the temperature of the flash chamber 2 is adjusted by taking T3 as a target, wherein the compressor 41 is controlled to operate at the rotation speed M1, the rotation speed of the condenser fan is P1, and the capillary flow is V1. In the temperature adjustment process, the temperature sensor 53 detects the real-time temperature inside the instant freezing chamber 2, and when the temperature of the instant freezing chamber 2 reaches the third starting temperature point T ON3 When the air door of the instant freezing chamber 2 is controlled to be opened, cold air generated by the refrigerating system 4 enters the instant freezing chamber 2, and the temperature of the cold air is reduced; when the temperature of the instant freezing chamber 2 is detected to reach the third stop temperature point T OFF3 And when the air door of the instant freezing chamber 2 is controlled to be closed, the cold air is prevented from entering the instant freezing chamber 2. This step is performed by timer 56, when timer 5When the 6 accumulation period reaches t3, execution of step S13 is stopped.
Preferably, the third start-up temperature point T ON3 ＝T3+T B1 /2, third shutdown temperature point T OFF3 ＝T ON3 –T B2 /2。
Preferably, the range of the third cooling target T3 is minus 3 ℃ to minus T3 < -2 ℃, and the duration T3 of the step S13 is 2h to minus T3 to minus 4h.
Sequentially cooling step by step until S1n;
s1n: the duration of the preset step S1n is Tn, the nth cooling target of the preset cooling object is Tn, and the temperature of the instant freezing chamber 2 is adjusted by taking Tn as the target, wherein the compressor 41 is controlled to operate at the rotation speed M1, the rotation speed of the condenser fan is P1, and the capillary flow is V1. In the temperature adjustment process, the temperature sensor 53 detects the real-time temperature inside the instant freezing chamber 2, and when the temperature of the instant freezing chamber 2 reaches the nth starting temperature point T ONn When the air door of the instant freezing chamber 2 is controlled to be opened, cold air generated by the refrigerating system 4 enters the instant freezing chamber 2, and the temperature of the cold air is reduced; when the temperature of the instant freezing chamber 2 is detected to reach the nth stop temperature point T OFFn And when the air door of the instant freezing chamber 2 is controlled to be closed, the cold air is prevented from entering the instant freezing chamber 2. This step is performed by using the timer 56 to count time, and when the accumulated time length of the timer 56 reaches tn, the execution of step S1n is stopped.
Preferably, the nth start-up temperature point T ONn ＝Tn+T B1 2 nth shutdown temperature point T OFFn ＝T ONn –T B2 /2。
Preferably, the range of the nth cooling target Tn is minus n ℃ less than or equal to- (n-1) DEG C, and the duration Tn of the step S1n is 2h less than or equal to Tn less than or equal to 4h.
Preferably, the final cooling target range of the supercooling cooling process is-5 ℃ to-20 ℃, the cooling temperature difference range between the steps adjacent to each other before and after in the steps S12-S1 n is 0 ℃ to 2 ℃ but not 0 ℃, and the duration time range of each step is 2h to 4h.
Preferably, n is greater than or equal to 1, n is a natural number, and the specific value of n is set according to the freezing point of the object to be cooled placed in the instant freezing chamber 2, so that the object to be cooled stably enters a supercooling state after the completion of the step S1n, and the supercooling depth is proper. In this embodiment, the object to be cooled placed in the freezing chamber 2 is preferably meat, and therefore n=6 is set so that the meat placed in the freezing chamber 2 is stabilized in the supercooled state.
The steps S12 to S1n can make the temperature of the cooling object drop uniformly, the supercooling depth is proper, the cooling state is stably entered, and the early release of supercooling is avoided.
S2: the supercooling releasing process is performed to release the supercooling state of the cooling object by increasing the rotation speed of the compressor.
Specific:
s2: the duration of the preset step S2 is t, the control system 5 controls the compressor 41 to operate at the rotation speed M2 through the frequency conversion board 55, controls the condenser fan to operate at the rotation speed P1, the capillary flow is V1, the timer 56 is adopted to count the capillary flow in the process, and when the accumulated duration of the timer 56 reaches t, the execution of the step S2 is stopped.
Preferably, the preset duration t of step S2 is in the range of 0 < t.ltoreq.10h.
Preferably, M1 < M2.
Preferably, the compressor speed M2 is the compressor maximum speed.
In the step S2, the rotating speed of the compressor is increased, the cold air quantity generated by the refrigerating system 4 is increased, and the maximum cold air quantity is given to the cooling object, so that the cooling object quickly passes through the maximum ice crystal generation zone, and granular ice crystals with uniform sizes are instantaneously formed by the water in the cooling object, thereby realizing instantaneous freezing of the cooling object and simultaneously avoiding damage to cells of the cooling object.
S3: and performing a conventional refrigeration preservation process, and performing conventional refrigeration preservation on the cooling object after supercooling release.
Specific:
s3: the conventional refrigeration preservation temperature of the cooling object is preset to be T, the temperature of the instant freezing chamber 2 is adjusted with the T as a target, wherein the control system 5 controls the compressor 41 to operate at the rotating speed M1 through the variable frequency plate 55, the condenser fan operates at the rotating speed P1, and the capillary flow is V1. In the temperature regulation process, the temperature sensor 53 detects the real-time temperature inside the instant freezing chamber 2, and when the temperature of the instant freezing chamber 2 reaches the normal refrigeration storage start-up temperature pointT ON When the air door of the instant freezing chamber 2 is controlled to be opened, cold air generated by the refrigerating system 4 enters the instant freezing chamber 2, and the temperature of the cold air is reduced; when the temperature of the instant freezing chamber 2 is detected to reach the normal refrigeration storage stop temperature point T OFF And when the air door of the instant freezing chamber 2 is controlled to be closed, the cold air is prevented from entering the instant freezing chamber 2.
Preferably, the temperature range of the conventional refrigeration preservation temperature T of the cooling object is more than or equal to minus 7 ℃ and less than 0 ℃, and the temperature range is used for enabling the meat cooling object to be cut after being taken out.
Preferably, the normal refrigeration keeps the starting temperature point T ON ＝T+T B1 2, conventional refrigeration and preservation shutdown temperature point T OFF ＝T ON –T B2 /2。
Preferably, M1 is less than M2, M1 ranges from 1200rpm to 1400rpm, and M2 ranges from 3800rpm to 4500rpm; v1 ranges from 4.5L/min to 5L/min, and P1 ranges from 1200rpm to 1500rpm.
The compressor 41 speed, condenser fan speed, and capillary flow rate changes in the steps of this example are shown in table 1.
TABLE 1
Figure GDA0002453610910000121
Figure GDA0002453610910000131
In this embodiment, as shown in fig. 6, the temperature of the cooling object is reduced from higher than 0 ℃ to lower than 0 ℃ during the supercooling and cooling process; in the supercooling releasing process, the supercooling state of the cooling object is released, the temperature is raised but still lower than 0 ℃, and the final temperature reached by the rise after the temperature rise is completed is maintained; in the conventional refrigerating and preserving process, the temperature of the object to be cooled is continuously lowered based on the temperature finally reached by the supercooling release.
The control method provided by the embodiment not only can realize the instant freezing storage of the meat cooling object, but also can realize the instant freezing storage of the cooling object with other freezing points by changing the number of supercooling cooling steps and the maintaining duration of each step.
According to the embodiment, the cooling object can be stably brought into the supercooling state by performing the stage cooling control on the instant freezing chamber 2 during supercooling and cooling, the supercooling state is prevented from being released in advance, the supercooling state is released by increasing the rotating speed of the compressor, the instant freezing of the cooling object is realized, and the cooling object is well cut after being taken out by the setting of the conventional refrigerating storage stage.
In summary, the invention realizes the instantaneous freezing storage of the cooling object through the three processes of supercooling, cooling, supercooling and removing and conventional refrigeration storage, so that the temperature of the cooling object is uniformly and uniformly reduced, the cooling object stably enters a supercooling state with proper depth, the rotating speed of the compressor is increased so as to give a large amount of cold air stimulation to the cooling object to realize supercooling and removing, the conventional refrigeration storage keeps the cooling object in a good cutting state, the nutrition loss caused by the large outflow of juice of the cooling object is avoided, and the storage requirement of users is met.
Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that this disclosure is not limited to the particular arrangements, instrumentalities and methods of implementation 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 (13)

1. A transient freezing storage method is characterized in that: the instant freezing storage process is provided with a supercooling and cooling process, a supercooling and releasing process and a conventional refrigerating and preserving process, wherein:
s1: cooling the cooling object in stages to enable the cooling object to enter a supercooling state;
s2: a supercooling releasing step of releasing the supercooling state of the cooling object by increasing the rotation speed of the compressor;
s3: a conventional refrigeration preservation process, in which the object to be cooled after supercooling is released is subjected to conventional refrigeration preservation;
the step S1 specifically comprises the following steps:
s11: presetting the duration of the step S11 as T1, presetting the first cooling target of the cooling object as T1, and enabling the cooling object to be instant frozenThe temperature of the chamber is regulated by taking T1 as a target, wherein a control system controls the compressor to run at a rotating speed M2 through a variable frequency plate, controls the rotating speed of a condenser fan to run at P1, and controls the capillary flow to be V1; in the temperature regulation process, a temperature sensor detects the real-time temperature inside the instant freezing chamber, and when the temperature of the instant freezing chamber reaches a first starting temperature point T ON1 When the air door of the instantaneous freezing chamber is controlled to be opened, cold air generated by the refrigerating system enters the instantaneous freezing chamber, and the temperature of the instantaneous freezing chamber is reduced; when the temperature of the instant freezing chamber is detected to reach the first stop temperature point T OFF1 When the air door of the instantaneous freezing chamber is controlled to be closed, cold air is prevented from entering the instantaneous freezing chamber; in the implementation process of the step, a timer is adopted for timing, and when the accumulated time length of the timer reaches t1, the execution of the step S11 is stopped; the first cooling target of the cooling object is preset to be T1 according to the type, volume, weight and external environment temperature of the cooling object;
first start-up temperature point T ON1 ＝T1+T B1 First shutdown temperature point T OFF1 ＝T ON1 –T B2 /2；T B1 Refers to the floating temperature of the starting point of the instant freezing chamber in the starting process of the compressor; t (T) B2 Temperature difference, T, of instant freezing chamber B1 And T B2 Is a known parameter, wherein T B1 In the range of less than 0 ℃ T B1 ,T B2 In the range of T B2 ≤2℃；
The range of the first cooling target T1 is more than or equal to 0 ℃ and less than or equal to 5 ℃, and the duration T1 of the step S11 is more than or equal to 2h and less than or equal to 1 and less than or equal to 4h;
s12: the duration of the preset step S12 is T2, the second cooling target of the cooling object is T2, the temperature of the instant freezing chamber is regulated by taking the T2 as the target, wherein the control system controls the compressor to operate at the rotating speed M1 through the variable frequency plate, the rotating speed of the condenser fan is P1, and the capillary flow is V1; in the temperature regulation process, the temperature sensor detects the real-time temperature inside the instant freezing chamber, and when the temperature of the instant freezing chamber reaches the second starting temperature point T ON2 When the air door of the instantaneous freezing chamber is controlled to be opened, cold air generated by the refrigerating system enters the instantaneous freezing chamber, and the temperature of the instantaneous freezing chamber is reduced; when the temperature of the instant freezing chamber is detected to reach the second stop temperature point T OFF2 When the air door of the instantaneous freezing chamber is controlled to be closed, cold air is prevented from entering the instantaneous freezing chamber; this stepIn the implementation process, a timer is adopted for timing, and when the accumulated time length of the timer reaches t2, the execution of the step S12 is stopped; wherein the second start-up temperature point T ON2 ＝T2+T B1 /2, second shutdown temperature point T OFF2 ＝T ON2 –T B2 2; the range of the second cooling target T2 is minus 2 ℃ and is more than or equal to T2 and less than 0 ℃, and the duration T2 of the step S12 is 2h and is more than or equal to T2 and is less than or equal to 4h;
s13: the duration of the preset step S13 is T3, the third cooling target of the cooling object is T3, the temperature of the instant freezing chamber is regulated by taking the T3 as the target, wherein the compressor is controlled to operate at the rotating speed M1, the rotating speed of the condenser fan is P1, and the capillary flow is V1; in the temperature regulation process, the temperature sensor detects the real-time temperature inside the instant freezing chamber, and when the temperature of the instant freezing chamber reaches the third starting temperature point T ON3 When the air door of the instantaneous freezing chamber is controlled to be opened, cold air generated by the refrigerating system enters the instantaneous freezing chamber, and the temperature of the instantaneous freezing chamber is reduced; when the temperature of the instant freezing chamber is detected to reach the third stop temperature point T OFF3 When the air door of the instantaneous freezing chamber is controlled to be closed, cold air is prevented from entering the instantaneous freezing chamber; in the implementation process of the step, a timer is adopted for timing, and when the accumulated time length of the timer reaches t3, the execution of the step S13 is stopped; wherein, the third start-up temperature point T ON3 ＝T3+T B1 /2, third shutdown temperature point T OFF3 ＝T ON3 –T B2 2; the range of the third cooling target T3 is minus 3 ℃ to minus T3 < -2 ℃, and the duration T3 of the step S13 is 2h to T3 to 4h;
sequentially cooling step by step until S1n;
s1n: presetting the duration time of the step S1n as Tn, presetting the nth cooling target of the cooling object as Tn, and adjusting the temperature of the instant freezing chamber with Tn as the target, wherein the compressor is controlled to operate at the rotating speed M1, the rotating speed of the condenser fan is controlled to operate at the rotating speed P1, and the capillary flow is controlled to be V1; in the temperature regulation process, a temperature sensor detects the real-time temperature inside the instant freezing chamber, and when the temperature of the instant freezing chamber reaches an nth starting temperature point T ONn When the air door of the instantaneous freezing chamber is controlled to be opened, cold air generated by the refrigerating system enters the instantaneous freezing chamber, and the temperature of the instantaneous freezing chamber is reduced; when the temperature of the instant freezing chamber is detected to reach the nth stop temperature point T OFFn When in use, the air door of the instant freezing chamber is controlledClosing to prevent cold air from entering the instant freezing chamber; in the implementation process of the step, a timer is used for counting, and when the accumulated time length of the timer reaches tn, the execution of the step S1n is stopped, wherein the nth starting temperature point T ONn ＝Tn+T B1 2 nth shutdown temperature point T OFFn ＝T ONn –T B2 2; the range of the nth cooling target Tn is-n ℃ which is less than or equal to minus- (n-1) DEG C, and the duration Tn of the step S1n is 2h which is less than or equal to Tn which is less than or equal to 4h;
the final cooling target range of the cooling process is-5 ℃ to-20 ℃, the cooling temperature difference range between the steps adjacent to each other before and after in the steps S12-S1 n is 0 ℃ to 2 ℃ but not 0 ℃, and the duration time range of each step is 2h to 4h;
in the step S11, the rotation speed of the compressor is set to M2; in the steps S12 to S1n, the rotation speed of the compressor is set as M1; in the step S2, the rotation speed of the compressor is set to M2; in the step S3, the rotation speed of the compressor is set to M1; wherein M2> M1.
2. The storage method as claimed in claim 1, wherein the supercooling release process S2: and (3) increasing the rotation speed of the compressor to release the supercooling state of the cooling object, presetting the duration of the step S2 to be t, adopting a timer to count, and stopping executing the step S2 when the accumulated time length of the timer reaches t, wherein the range of t is 0-10 h.
3. The storage method as claimed in claim 1, wherein said normal refrigeration storage process S3: the conventional refrigeration preservation temperature of the preset cooling object is T, and when the temperature of the instant freezing room reaches the conventional refrigeration preservation starting temperature point T ON When the temperature of the instant freezing room reaches the normal refrigerating storage stop temperature point T, the air door of the instant freezing room is opened OFF Closing the damper of the instant freezing chamber, wherein T ON ＝T+T B1 /2,T OFF ＝T ON –T B2 /2。
4. A storage method as defined in claim 1, wherein M2 is a maximum compressor speed.
5. The method of storing according to any one of claim 1 to 4,
the range of M1 is 1200 rpm-1400 rpm, and the range of M2 is 3800 rpm-4500 rpm.
6. A control method of a refrigerator having a compartment with a transient freeze storage function, characterized in that during transient freeze storage, the compartment is subjected to transient freeze control as follows:
s1: cooling the cooling object in stages to enable the cooling object to enter a supercooling state;
s2: a supercooling releasing process for releasing supercooling state of the cooling object by increasing rotation speed of the compressor;
s3: performing conventional refrigeration preservation process, and performing conventional refrigeration preservation on the cooled object after supercooling release;
intermittent air supply is adopted in each stage of the supercooling stage cooling process, and when the supercooling stage cooling process is in the nth stage: the storage temperature of the instant freezing chamber reaches T ON n＝Tn+T B1 And/2, opening the air door of the instant freezing compartment; the storage temperature of the instant freezing chamber reaches T off n＝T ON n-T B2 And (2) closing a transient freezing compartment air door, wherein Tn refers to the preset temperature of the nth stage; t (T) B1 Refers to the floating temperature T of the starting point of the instant freezing compartment in the starting process of the compressor B2 The temperature difference, T, between the start and stop of the instant freezing room ON n>Tn>T off n；
The S1 comprises the following steps:
s11: the temperature of the instant freezing compartment is regulated by taking T1 as a target, the duration of a preset cooling step S11 is a first cooling time T1, a timer is adopted for timing, and in the time T1, when the temperature of the instant freezing compartment reaches a first starting temperature point T ON1 When the temperature of the instant freezing room reaches the first stop temperature point T, the air door of the instant freezing room is opened OFF1 Closing the damper of the instant freezing chamber, wherein T ON1 ＝T1+T B1 /2,T OFF1 ＝T ON1 –T B2 And/2, stopping executing the step when the accumulated time length of the timer reaches t1S11；
S12: presetting a second cooling target of a cooling object as T2, enabling the temperature of the instant freezing compartment to be adjusted and cooled by taking the T2 as the target, presetting the duration of a cooling step S12 as a second cooling time T2, timing by a timer, and when the temperature of the instant freezing compartment reaches a second starting temperature point T in the time T2 ON2 When the temperature of the instant freezing room reaches the second stop temperature point T, the air door of the instant freezing room is opened OFF2 Closing the damper of the instant freezing chamber, wherein T ON2 ＝T2+T B1 /2,T OFF2 ＝T ON2 –T B2 And/2, stopping executing the step S12 when the accumulated time length of the timer reaches t 2;
sequentially cooling step by step until S1n;
s1n: presetting an nth cooling target of a cooling object as Tn, enabling the temperature of the instant freezing compartment to be adjusted and cooled by taking Tn as the target, presetting the duration of a cooling step S1n as nth cooling time Tn, timing by adopting a timer, and when the temperature of the instant freezing compartment reaches an nth starting temperature point T within Tn time ONn When the temperature of the instant freezing room reaches the nth stop temperature point T, the air door of the instant freezing room is opened OFFn Closing the damper of the instant freezing chamber, wherein T ONn ＝Tn+T B1 /2,T OFFn ＝T ONn –T B2 And (2), wherein n is more than or equal to 1, n is a natural number, and when the accumulated time length of the timer reaches tn, stopping executing the step S1n;
in the step S11, the range of T1 is more than or equal to 0 ℃ and less than or equal to 5 ℃ and the range of T1 is 2-4 h;
the final cooling target range of the supercooling cooling process is-5 ℃ to-20 ℃, and the cooling temperature difference range between each step in the steps S12-S1 n is 0 ℃ to 2 ℃ but not 0 ℃;
in the step S11, the rotation speed of the compressor is set to M2; in the steps S12 to S1n, the rotation speed of the compressor is set as M1; in the step S2, the rotation speed of the compressor is set to M2; in the step S3, the rotation speed of the compressor is set to M1; wherein M2> M1.
7. The control method according to claim 6, characterized in that the supercooling release process S2: and (3) increasing the rotation speed of the compressor to release the supercooling state of the cooling object, presetting the duration of the step S2 to be t, adopting a timer to count, and stopping executing the step S2 when the accumulated time length of the timer reaches t, wherein the range of t is 0-10 h.
8. The control method as set forth in claim 6, wherein M2 is a maximum value of a rotational speed of the compressor.
9. The control method as claimed in claim 6, wherein said normal refrigeration storage process S3: the conventional refrigeration preservation temperature of the preset cooling object is T, and when the temperature of the instant freezing room reaches the conventional refrigeration preservation starting temperature point T ON When the temperature of the instant freezing room reaches the normal refrigerating storage stop temperature point T, the air door of the instant freezing room is opened OFF Closing the damper of the instant freezing chamber, wherein T ON ＝T+T B1 /2,T OFF ＝T ON –T B2 /2。
10. The control method according to any one of claims 6 to 9, wherein the M1 range is 1200rpm to 1400rpm, and the M2 range is 3800rpm to 4500rpm.
11. A control system, characterized by: the control system employs the storage method of any one of claims 1 to 5 or the control method of any one of claims 6 to 10.
12. The control system of claim 11, comprising: controller, temperature regulating device, temperature sensor, time-recorder, its characterized in that: the controller receives information from the temperature sensor and the timer and controls the temperature regulating device to regulate the temperature of the instant freezer; the temperature adjusting device is used for adjusting the instant freezing compartment to operate according to a preset temperature; the temperature sensor is used for detecting the temperature of the instant freezing compartment in real time; and the timer is used for setting and monitoring the duration.
13. A refrigerator provided with a flash compartment, characterized in that: the refrigerator has a control system according to any one of claims 11,12 or employs a storage method according to any one of claims 1 to 5 or employs a control method according to any one of claims 6 to 10.
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