CN110953831A - Instant freezing storage control method and refrigerator - Google Patents

Instant freezing storage control method and refrigerator Download PDF

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Publication number
CN110953831A
CN110953831A CN201911046497.XA CN201911046497A CN110953831A CN 110953831 A CN110953831 A CN 110953831A CN 201911046497 A CN201911046497 A CN 201911046497A CN 110953831 A CN110953831 A CN 110953831A
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CN
China
Prior art keywords
temperature
instant freezing
freezing chamber
cooling
supercooling
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Pending
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CN201911046497.XA
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Chinese (zh)
Inventor
王飞
钱梅双
辛海亚
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Gree Electric Appliances Inc of Zhuhai
Hefei Jing Hong Electrical Co Ltd
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Gree Electric Appliances Inc of Zhuhai
Hefei Jing Hong Electrical Co Ltd
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Application filed by Gree Electric Appliances Inc of Zhuhai, Hefei Jing Hong Electrical Co Ltd filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN201911046497.XA priority Critical patent/CN110953831A/en
Publication of CN110953831A publication Critical patent/CN110953831A/en
Pending legal-status Critical Current

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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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

The invention relates to a transient freezing storage control method and a refrigerator, which realize transient freezing storage of a cooled object by performing three processes of supercooling cooling, supercooling release and conventional refrigeration storage on the cooled object. The cooling process is controlled in a staged mode through the instant freezing chamber, after a cooling object stably enters a supercooling state, supercooling is removed in a mode of combining increasing the rotating speed of a fan of a condenser and applying physical oscillation to the cooling object, the cooling object quickly passes through the largest ice crystal zone, instant freezing of the cooling object is achieved, the cooling object is cut well after being taken out in a conventional refrigeration storage process, nutrition loss caused by the fact that juice of the cooling object flows out in a large amount is avoided, and the storage requirement of a user can be met.

Description

Instant freezing storage control method and refrigerator
Technical Field
The invention relates to a refrigerator control method and a refrigerator, in particular to a control method for instant freezing storage and the refrigerator.
Background
In order to better maintain the nutrition of frozen food, the food is preserved by adopting a freezing mode such as ordinary freezing, quick freezing and the like and a supercooling mode, but the traditional ordinary 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 maximum ice crystal generation zone, the production cost is high, and the rapid freezing is not beneficial to popularization and application in a refrigerator; in the prior art of supercooling, supercooling is removed in advance due to uneven temperature reduction in the supercooling and cooling process, the supercooling cannot stably enter a supercooled state, so that the supercooling depth is shallow, and the supercooling removing effect is poor due to increase of wind speed or wind quantity.
Disclosure of Invention
According to the invention, through carrying out stage-type cooling control on the cooled object in the stage of supercooling cooling, supercooling is removed by adopting a mode of combining increasing the rotating speed of a fan of the condenser and applying physical oscillation to the cooled object, the cooled object is kept in a good cutting state in the conventional refrigeration process, complex operation is not needed, the temperature of the cooled object can be uniformly reduced in the instant freezing process, the nutrition is well preserved, and the quality is not reduced.
Specifically, the method comprises the following steps:
the invention provides a transient freezing storage method, which is provided with a supercooling cooling process, a supercooling relieving process and a conventional refrigeration storage process in the transient freezing storage process, wherein the supercooling cooling process comprises the following steps:
s1: a supercooling cooling process, in which the temperature of the cooling object is reduced by stages to enable the cooling object to enter a supercooling state;
s2: the supercooling relieving process is carried out, namely the supercooling state of the cooling object is relieved in a mode of combining increasing the rotating speed of a fan of the condenser and applying physical oscillation to the cooling object;
s3: and in the conventional refrigeration preservation process, the object to be cooled after supercooling release is subjected to conventional refrigeration preservation.
The invention also provides a refrigerator control method, the refrigerator has a compartment with instant freezing storage function, during the instant freezing storage period, the following instant freezing control is carried out on the compartment:
s1: performing a supercooling and cooling process, and cooling the cooling object by stages to enable the cooling object to enter a supercooling state;
s2: performing an overcooling removing process, wherein the overcooling state of the cooling object is removed in a mode of combining increasing the rotating speed of a condenser fan and applying physical oscillation to the cooling object;
s3: and performing a conventional refrigeration storage process, and performing conventional refrigeration storage on the cooled object after supercooling release.
Preferably, intermittent air supply is adopted in each stage of the supercooling staged cooling process, and when the supercooling staged cooling process is in the nth stage: the storage temperature of the instant freezing chamber reaches TONn＝Tn+TB1At the time of/2, the air door of the instant freezing chamber is opened; the storage temperature of the instant freezing chamber reaches Toffn＝TONn-TB2At/2, the instant freezing chamber air door is closed, wherein Tn refers to the preset temperature of the nth stage; t isB1Indicates the starting point floating temperature T of the instant freezing chamber in the starting process of the compressorB2Temperature difference between start and stop of instant freezing chamber, TONn>Tn>Toffn。
Preferably, the supercooling cooling process S1 includes:
s11: the temperature of the instant freezing chamber is adjusted by taking T1 as a target, the duration of the preset temperature reduction step S11 is a first temperature reduction time T1, a timing unit is adopted for timing, and in the time T1, when the temperature of the instant freezing chamber reaches a first starting temperature point TON1When the temperature of the instant freezing chamber reaches the first stop temperature point T, the air door of the instant freezing chamber is openedOFF1At the same time, the air door of the instant freezing chamber is closed, wherein TON1＝T1+TB1/2,TOFF1＝TON1–T B22, when the cumulative time length of the timer unit reaches t1, stopping executing the step S11;
s12: the second temperature reduction target of the preset cooling object is T2, the temperature of the instant freezing chamber is adjusted and reduced by taking T2 as a target, the duration of the preset temperature reduction step S12 is a second temperature reduction time T2, a timing unit is adopted for timing, and in the time T2, when the temperature of the instant freezing chamber reaches a second starting temperature point TON2When the temperature of the instant freezing chamber reaches the second stop temperature point T, the air door of the instant freezing chamber is openedOFF2At the same time, the air door of the instant freezing chamber is closed, wherein TON2＝T2+TB1/2,TOFF2＝TON2–T B22, when the cumulative time length of the timer unit reaches t2, stopping executing the step S12;
thereby cooling down the temperature step by step until the step S1 n;
s1 n: presetting an nth cooling target of a cooling object as Tn, enabling the temperature of the instant freezing chamber to be adjusted and cooled by taking the Tn as the target, presetting the duration of the cooling step S1n as the nth cooling time Tn, timing by adopting a timing unit, and when the temperature of the instant freezing chamber reaches the nth starting temperature point T within the Tn time, counting by adopting the timing unitONnWhen the instant freezing chamber temperature reaches the nth shutdown temperature point T, the air door of the instant freezing chamber is openedOFFnAt the same time, the air door of the instant freezing chamber is closed, wherein TONn＝Tn+TB1/2,TOFFn＝TONn–TB2And/2, n is more than or equal to 1, n is a natural number, and when the accumulated time length of the timing unit reaches tn, the step S1n is stopped.
Preferably, the first temperature reduction target of the cooling object is preset to 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 2h to 4 h.
Preferably, the final temperature reduction target range of the supercooling temperature reduction process is-5 ℃ to-20 ℃, and the temperature reduction temperature difference range between the steps S12 to S1n is 0 ℃ to 2 ℃ but does not include 0 ℃.
Preferably, the supercooling release process S2: starting an oscillating device, increasing the rotating speed of a fan of a condenser to relieve the overcooling state of a cooling object, presetting the starting time of the oscillating device as t ', presetting the duration of the step S2 as t, adopting a timing unit to respectively time t ' and t, closing the oscillating device when the accumulated time of the timing unit reaches t ', and stopping S2 when the accumulated time of the timing unit reaches t, wherein the range of t ' and t is 10h, t is more than or equal to t and is more than t ', and t is more than 0 h.
Preferably, the oscillation device is a mechanical physical oscillation device, and the applied oscillation frequency ranges from 50 times/min to 60 times/min.
Preferably, in step S11, the compressor rotation speed is set to M2, and the condenser fan rotation speed is set to P1; in steps S12-S1 n, the rotating speed of the compressor is set as M1, and the rotating speed of the fan of the condenser is set as P1; in step S2, the compressor rotation speed is set to M1, and the condenser fan rotation speed is set to P2; wherein M2> M1, P2> P1.
Preferably, P2 is the condenser fan speed maximum.
Preferably, the conventional refrigeration preservation process S3: the normal refrigeration preservation temperature of a preset cooling object is T, and when the temperature of the instant freezing room reaches the starting temperature point T of the normal refrigeration preservationONWhen the temperature of the instant freezing chamber reaches the normal refrigeration preservation shutdown temperature point TOFFAt the same time, the air door of the instant freezing chamber is closed, wherein TON＝T+TB1/2,TOFF＝TON–TB2/2。
Preferably, in the conventional cryopreservation process S3, the compressor speed is set to M1 and the condenser fan speed is set to P1.
Preferably, the M1 range is 1200rpm to 1400rpm, the M2 range is 3800rpm to 4500rpm, the P1 range is 1200rpm to 1500rpm, and the P2 range is 1600rpm to 1900 rpm.
The invention also provides a control system, and the control method provided by the invention is adopted.
Preferably, the control system comprises: controller, temperature regulation apparatus, temperature sensor, timing unit, its characterized in that: a controller for receiving information from the temperature sensor and the timing unit and controlling the temperature adjusting device to adjust the temperature of the instant freezing room; the temperature adjusting device is used for adjusting the instantaneous freezing chamber to operate according to a preset temperature; the temperature sensor is used for detecting the temperature of the instant freezing chamber in real time; and the timing unit is used for setting and monitoring the time length.
In addition, the invention also provides a refrigerator which is provided with the instant freezing chamber and adopts the control system or the control method provided by the invention.
Preferably, the refrigerator further includes a refrigerating system for generating cool air to be supplied to the instant freezing chamber.
The invention can lead the temperature of the cooling object to drop uniformly and uniformly, stably enter the supercooling state with proper depth, has good supercooling relieving effect, avoids nutrition loss caused by the outflow of a large amount of juice of the cooling object, and can meet the storage requirement of a user.
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 structural view 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 structural diagram of a refrigerator according to embodiment 1 of the present invention;
FIG. 5 is a schematic view of a schematic structure of an instant freezer in embodiment 1 of the present invention;
FIG. 6 is a control diagram in embodiment 2 of the present invention;
fig. 7 is a schematic diagram of changes in the temperature of a cooling target in embodiment 2 of the present invention.
In the drawings:
1-a refrigerating chamber; 2-instant freezing chamber; 21-instant freezing chamber drawer; 3-freezing chamber;
4-a refrigeration system; 41-a compressor; 42-a condenser; 43-anti-condensation tube; 44-a dry filter; 45-capillary tube; 46-a freezer evaporator; 47-a return air duct assembly; 48-a return gas heat exchange section;
5-a control system; 51-a controller; 52-a display; 53-temperature sensor; 54-a temperature regulating device; 55-a frequency conversion plate; 56-a timing unit;
6-oscillating 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.
The invention aims to provide a flash freezing storage method and a refrigerator, which can perform flash freezing storage on a cooling object, quickly release the overcooling state to instantly freeze the cooling object after the cooling object stably enters the overcooling state, realize flash freezing storage of the cooling object, and solve the problems of uneven temperature reduction, shallow overcooling depth, poor storage effect of the cooling object after the overcooling release, juice outflow, little nutrition preservation and flavor and quality reduction during storage of the cooling object.
For further explanation, the present invention takes an air-cooled refrigerator as an example, and provides the following specific examples. The air-cooled refrigerator uses cold air as a carrier, and the rotating speed of a freezing fan can be kept unchanged in the storage process.
Example 1:
as shown in fig. 4 and 5, the present embodiment provides a flash storage refrigerator including:
the instant freezing chamber 2 has an instant freezing chamber drawer 21 for storing the cooling target and performing instant freezing and storage of the cooling target.
The refrigerating system 4 is used for controllably providing cold air to the instant freezing chamber 2, and controlling the temperature adjusting device 54 to adjust the temperature of the instant freezing chamber 2 so as to reduce or maintain the temperature of the instant freezing chamber 2 according to preset temperatures. The method specifically comprises the following steps: compressor 41, condenser 42, anti-condensation pipe 43, dry filter 44, capillary tube 45, freezing chamber evaporator 46, air return pipe assembly 47 and air return heat exchange section 48.
And the control system 5 is used for controlling the refrigerating system 4 to provide cold air to the instant freezing chamber 2, so that the temperature of the instant freezing chamber 2 is reduced or maintained according to the preset target temperature of each step, and the instant freezing storage of a cooling object is realized.
And an oscillation device 6 for applying physical oscillation to the object to be cooled to release the supercooling.
Preferably, the oscillation device 6 is a mechanical physical oscillation device, and the applied oscillation frequency ranges from 50 times/min to 60 times/min, and in this embodiment, 60 times/min is preferred, and the time interval is 1 s.
Preferably, the oscillating device 6 is arranged at the side or bottom of the flash chamber drawer 21, and in this embodiment the oscillating device 6 is preferably arranged at the side of the flash chamber drawer 21.
Specifically, when the object to be cooled needs to be released from the supercooled state, the oscillation device 6 is turned on, and the oscillation device 6 applies physical oscillation to the object to be cooled, so that the object to be cooled is disturbed by the physical oscillation to break the supercooled stable state, thereby realizing the supercooled state.
Preferably, the refrigerator further comprises a condenser fan for enhancing the heat exchange function of the condenser.
Preferably, the rotating speed of the condenser fan is controlled by the control system 5 according to the preset cooling target temperature in each step, and when the rotating speed of the condenser fan is high, the amount of cold air finally entering the instant freezing chamber 2 is larger than that entering the instant freezing chamber 2 when the rotating speed of the condenser fan is low.
Preferably, the control system 5 comprises: a controller 51, which is provided with a chip processor inside and is used for receiving information from a temperature sensor 53 and a timing unit 56 and controlling a temperature adjusting device 54 and the refrigerating system 4 to adjust the temperature of the instant freezing chamber 2; a temperature adjusting device 54 for adjusting the temperature of the instant freezing chamber 2 to operate according to a preset target temperature; a temperature sensor 53 for detecting the temperature of the instant freezing chamber 2 in real time; a timing unit 56 for setting and monitoring time; a frequency conversion plate 55 for adjusting the rotation speed of the compressor 41; the display 52, the display 52 has instant freezing function selection button on the panel, the user can select whether the cooling object needs to implement instant freezing function.
Preferably, the timing unit 56 includes a timer a for timing a duration of each step in the flash freezing storage process, and a timer B for timing a duration of the starting of the oscillation device 6.
Specifically, after the user puts the cooling target into the instant freezing chamber 2, the instant freezing function selection button is pressed on the refrigerator display 52 to perform instant freezing storage of the cooling target. In the instant freezing storage process, the control system 5 controls and adjusts 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 implements the change of the rotation speed of the compressor 41 through the frequency conversion plate 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 that when the rotation speed is low.
Preferably, the control system 5 accumulates and controls the duration of each step in the instant freezing storage process through the timer a in the timing unit 56, specifically, presets the running duration of each step in the instant freezing storage process, 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 the air door of the instant freezing chamber 2, so that the cold air generated by the refrigerating system 4 enters the instant freezing chamber 2 to reduce the temperature of the cold air; when the temperature sensor 53 detects that the temperature of the instant freezing chamber 2 reaches the shutdown temperature point set in this step, the control system 5 controls the air door of the instant freezing chamber 2 to close, and prevents cold air from entering the instant freezing chamber 2.
In 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 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 the nutrition and the flavor are kept well.
Example 2:
as shown in fig. 1, the present embodiment provides a flash storage control method, including:
s1: and performing an overcooling and cooling process, and performing staged cooling on the cooling object to enable the cooling object to enter an overcooling state.
Specifically, the method comprises the following steps:
s11: the duration of the step S11 is preset to be T1, the first cooling target of the cooling object is preset to be T1, and the instant freezing chamber 2 is adjusted to target T1, wherein the control system 5 controls the compressor 41 to operate at the rotation speed of M2 through the frequency conversion plate 55, controls the condenser fan to operate at the rotation speed of P1, and controls the capillary flow rate to be 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 is detected to reach the first starting temperature point TON1When the temperature of the air is reduced, the air door of the instant freezing chamber 2 is controlled to be opened, so that cold air generated by the refrigerating system 4 enters the instant freezing chamber 2; when the temperature of the instant freezing chamber 2 is detected to reach a first shutdown temperature point TOFF1At the same time, the air door of the instant freezing chamber 2 is controlled to be closed, and cold air is prevented from entering the instant freezing chamber 2. This step is performed by using the timer a in the timer unit 56, and when the accumulated time length of the timer a in the timer unit 56 reaches t1, the step S11 is stopped.
Preferably, the first temperature reduction target of the cooling object is preset to 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 the control program, and if the first cooling target T1 is set in the control program, the user may select the first cooling target T in the menu bar of the refrigerator.
Preferably, the first starting temperature point TON1＝T1+TB1First shutdown temperature point TOFF1＝TON1–TB2/2。
Preferably, TB1Indicating the floating temperature of the starting point of the instant freezing chamber 2 in the starting process of the compressor 41; t isB2Temperature difference, T, between start and stop of instant freezing chamber 2B1And TB2Is a known parameter, wherein TB1In the range of 0 ℃ to < TB1,TB2Range of TB2≤2℃。
Preferably, the first temperature reduction target T1 is in the range of 0 ℃ to T1 to 5 ℃, and the duration T1 of the step S11 is in the range of 2h to T1 to 4 h.
Preferably, when the temperature of the object to be cooled 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 be increased to a temperature of 0 ℃ or more, which contributes to uniform temperature reduction of the entire instant freezing chamber 2 in the subsequent steps and also makes uniform and uniform temperature reduction of the inside and outside of the object to be cooled.
S12: the duration of the step S12 is preset to be T2, the second cooling target of the cooling object is preset to be T2, and the instant freezing chamber 2 is adjusted to target T2, wherein the control system 5 controls the compressor 41 to operate at the rotation speed of M1 through the frequency conversion plate 55, the rotation speed of the condenser fan is P1, and the flow rate of the capillary tube is V1. In the temperature adjusting 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 is detected to reach the second starting temperature point TON2When the temperature of the air is reduced, the air door of the instant freezing chamber 2 is controlled to be opened, so that cold air generated by the refrigerating system 4 enters the instant freezing chamber 2; when the temperature of the instant freezing chamber 2 is detected to reach the second shutdown temperature point TOFF2At the same time, the instant freezing chamber 2 is controlled to prevent cold air from entering the instant freezing chamber 2. This step is performed by using the timer a in the timer unit 56, and when the accumulated time length of the timer a in the timer unit 56 reaches t2, the step S12 is stopped.
Preferably, the second starting temperature point TON2＝T2+TB1Second shutdown temperature Point TOFF2＝TON2–TB2/2。
Preferably, the second target temperature reduction T2 is in the range of-2 ℃ to T2 to 0 ℃, and the duration T2 of the step S12 is in the range of 2h to T2 to 4 h.
S13: the duration of the step S13 is preset to be T3, the third cooling target of the cooling object is preset to be T3, and the instant freezing chamber 2 is adjusted to target T3, wherein the compressor 41 is controlled to operate at the rotation speed of M1, the rotation speed of the condenser fan is controlled to operate at P1, and the flow rate of the capillary tube is set to be V1. In the temperature adjusting process, the temperature sensor 53 detects the real-time temperature inside the instant freezing chamber 2, and when it is detected that the temperature of the instant freezing chamber 2 reaches the third opening machine temperature point TON3When the temperature of the air is reduced, the air door of the instant freezing chamber 2 is controlled to be opened, so that cold air generated by the refrigerating system 4 enters the instant freezing chamber 2; when the temperature of the instant freezing chamber 2 is detected to reach a third shutdown temperature point TOFF3At the same time, the air door of the instant freezing chamber 2 is controlled to be closed, and cold air is prevented from entering the instant freezing chamber 2. This step is performed by using the timer a in the timer unit 56, and when the accumulated time length of the timer a in the timer unit 56 reaches t3, the step S13 is stopped.
Preferably, the third opening machine temperature point TON3＝T3+TB1Third shutdown temperature Point TOFF3＝TON3–TB2/2。
Preferably, the third temperature reduction target T3 is in the range of-3 ℃ to T3 < -2 ℃, and the duration T3 of the step S13 is in the range of 2h to T3 to 4 h.
Thereby cooling down the temperature step by step until the step S1 n;
s1 n: the preset step S1n is performed for a preset duration time Tn, the preset cooling target n is Tn, and the instant freezing chamber 2 is adjusted with the target Tn, wherein the compressor 41 is controlled to operate at a rotation speed M1, the condenser fan rotation speed is P1, and the capillary flow rate is V1. In the temperature adjusting 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 is detected to reach the nth starting temperature point TONnWhen the temperature of the air is reduced, the air door of the instant freezing chamber 2 is controlled to be opened, so that cold air generated by the refrigerating system 4 enters the instant freezing chamber 2; when the temperature of the instant freezing chamber 2 is detected to reach the nth shutdown temperature point TOFFnIn time, the air door of the instant freezing chamber 2 is controlled to be closedClosed to prevent cold air from entering the instant freezing chamber 2. This step is performed by using the timer a in the timer unit 56, and when the accumulated time length of the timer a in the timer unit 56 reaches tn, the step S1n is stopped.
Preferably, the nth starting temperature point TONn＝Tn+TB1N < 2>, n < th > shutdown temperature point TOFFn＝TONn–TB2/2。
Preferably, the nth cooling target Tn is in the range of-n ℃ ≦ Tn ≦ n-1 deg.C, and the duration Tn of step S1n is in the range of 2h ≦ Tn ≦ 4 h.
Preferably, the final temperature reduction target range of the supercooling temperature reduction process is-5 ℃ to-20 ℃, the temperature difference range of the temperature reduction between the front and the back adjacent steps in the steps S12 to S1n is 0 ℃ to 2 ℃ but not 0 ℃, and the duration time of each step is 2h to 4 h.
Preferably, n is equal to or greater than 1, n is a natural number, and the specific value of n is set according to the freezing point of the cooling object placed in the instant freezing chamber 2, so that the cooling object stably enters the supercooling state after the completion of the step S1n, and the supercooling depth is appropriate. In the present embodiment, since the object to be cooled in the instant freezing chamber 2 is meat, n is set to 5, which allows the meat placed in the instant freezing chamber 2 to be stably supercooled.
Steps S12 to S1n can make the temperature of the object to be cooled drop uniformly, the supercooling depth appropriate, and stably enter the supercooling state, thereby avoiding premature supercooling release.
S2: and performing an overcooling removing process, wherein the overcooling state of the cooling object is removed by adopting a mode of combining increasing the rotating speed of a fan of the condenser and applying physical oscillation to the cooling object.
Specifically, the method comprises the following steps:
s2: presetting the duration of step S2 as t, presetting the starting time t ' of the oscillating device 6, starting the oscillating device 6 to enable the cooling object to be under the physical oscillation action, simultaneously controlling the compressor 41 to operate at the rotating speed M1 by the control system 5 through the frequency conversion plate 55, controlling the rotating speed of the fan of the condenser to operate at P2, and setting the capillary flow as V1, in the process, timing the starting time t ' of the oscillating device 6 and the duration t of step S2 by using the timing unit 56, closing the oscillating device 6 when the accumulated time length of the timer B in the timing unit 56 reaches t ', and stopping executing the step S2 when the accumulated time length of the timer A in the timing unit 56 reaches t.
Preferably, the preset duration t and the opening time t 'of the oscillating device 6 in the step S2 are in the range of 0 < t' < t ≦ 10 h.
Preferably, P1 < P2, P2 is the maximum speed of the condenser fan.
In step S2, the oscillation device 6 is turned on to apply a physical oscillation stimulus to the object to be cooled, the rotational speed of the condenser fan is increased to increase the amount of cold air entering the instant freezing chamber 2, and the maximum cold air stimulus is given to the object to be cooled to rapidly pass through the maximum ice crystal growth zone, so that water in the object to be cooled instantaneously forms granular ice crystals with uniform size, thereby preventing the cells of the object to be cooled from being damaged while the object to be cooled is instantaneously frozen.
S3: and performing a conventional refrigeration storage process, and performing conventional refrigeration storage on the cooled object after supercooling release.
Specifically, the method comprises the following steps:
s3: the normal refrigeration preservation temperature of the cooling object is preset to be T, the temperature of the instant freezing chamber 2 is adjusted by taking the T as a target, wherein the control system 5 controls the compressor 41 to operate at a rotating speed of M1 through the frequency conversion plate 55, the rotating speed of a fan of the condenser is P1, and the flow rate of a capillary tube is V1. In the temperature adjusting 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 is detected to reach the starting temperature point T of the conventional refrigeration and preservationONWhen the temperature of the air is reduced, the air door of the instant freezing chamber 2 is controlled to be opened, so that cold air generated by the refrigerating system 4 enters the instant freezing chamber 2; when the temperature of the instant freezing chamber 2 is detected to reach the shutdown temperature point T of the conventional refrigeration preservationOFFAt the same time, the air door of the instant freezing chamber 2 is controlled to be closed, and cold air is prevented from entering the instant freezing chamber 2.
Preferably, the conventional refrigeration preservation temperature T range of the cooling object is more than or equal to minus 7 ℃ and less than 0 ℃, and the temperature range ensures that the meat cooling object is taken out and cut well.
Preferably, the normal refrigeration startup temperature point TON＝T+TB1/2, normal refrigeration shutdown temperature point TOFF＝TON–TB2/2。
Preferably, the range of M1 is 1200 rpm-1400 rpm, and the range of M2 is 3800 rpm-4500 rpm; v1 is 4.5L/min-5L/min, P1 is 1200 rpm-1500 rpm, and P2 is 1600 rpm-1900 rpm.
The rotation speed of the compressor 41, the rotation speed of the condenser fan, the flow rate of the capillary tube, and the variation of the oscillation device on/off in each step of this example are shown in table 1.
TABLE 1
Step (ii) of Condenser fan speed Capillary flow Speed of compressor 41 Oscillating device 6
S11 P1 V1 M2 Close off
S12 P1 V1 M1 Close off
S13 P1 V1 M1 Close off
S14 P1 V1 M1 Close off
S15 P1 V1 M1 Close off
S2 P2 V1 M1 Is opened
S3 P1 V1 M1 Close off
In the embodiment, the temperature change of the cooling object is shown in fig. 7, and in the supercooling and cooling process, the temperature of the cooling object is reduced from higher than 0 ℃ to lower than 0 ℃; in the supercooling relieving process, the supercooling state of the cooling object is relieved, the temperature is raised but still lower than 0 ℃, and the final temperature reached by the temperature rise is maintained after the temperature rise is finished; in the conventional refrigeration preservation process, the temperature of the cooling target continues to decrease on the basis of the temperature that is finally reached by the supercooling release.
The control method provided by the embodiment can realize instant freezing storage of the meat cooling object, and can also realize instant freezing storage of the cooling object with other freezing points by changing the number of the supercooling and cooling steps and the maintaining time of each step.
In the embodiment, the stage-type cooling control is performed on the instant freezing chamber 2 during supercooling cooling, so that the cooled object can stably enter a supercooled state, the supercooled state is prevented from being removed in advance, the supercooling is removed in a mode of combining increasing the rotating speed of a fan of a condenser and applying physical oscillation to the cooled object, the cooled object is instantly frozen, and the arrangement in the conventional refrigeration storage stage ensures that the cooled object is cut after being taken out.
In conclusion, the instant freezing storage of the cooling object is realized through three processes of supercooling cooling, supercooling release and conventional refrigeration storage, so that the temperature of the cooling object is uniformly reduced and enters a supercooling state with proper depth stably, the rotating speed of a fan of a condenser is increased and physical oscillation is applied to the cooling object, so that a large amount of cold air and the physical oscillation stimulus are given to the cooling object to realize the supercooling release, the conventional refrigeration storage enables the cooling object to be kept in a good cutting state, the nutrition loss of the cooling object caused by the fact that juice of the cooling object flows out in a large amount is avoided, and the storage requirement of a user is met.
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 (16)

1. An instant freezing storage method is characterized in that: the instant freezing storage process is provided with a supercooling cooling process, a supercooling relieving process and a conventional refrigeration storage process, wherein:
s1: a supercooling cooling process, in which the temperature of the cooling object is reduced by stages to enable the cooling object to enter a supercooling state;
s2: the supercooling relieving process is carried out, namely the supercooling state of the cooling object is relieved in a mode of combining increasing the rotating speed of a fan of the condenser and applying physical oscillation to the cooling object;
s3: and in the conventional refrigeration preservation process, the object to be cooled after supercooling release is subjected to conventional refrigeration preservation.
2. A control method of a refrigerator having a compartment with a flash freezing storage function, characterized in that during the flash freezing storage, the following flash freezing control is performed for the compartment:
s1: performing a supercooling and cooling process, and cooling the cooling object by stages to enable the cooling object to enter a supercooling state;
s2: performing an overcooling removing process, wherein the overcooling state of the cooling object is removed in a mode of combining increasing the rotating speed of a condenser fan and applying physical oscillation to the cooling object;
s3: and performing a conventional refrigeration storage process, and performing conventional refrigeration storage on the cooled object after supercooling release.
3. The method as claimed in any one of claims 1 and 2, wherein the supercooling staged cooling process adopts intermittent air supply in each stage, and when the supercooling staged cooling process is in the nth stage: the storage temperature of the instant freezing chamber reaches TONn＝Tn+TB1At the time of/2, the air door of the instant freezing chamber is opened; the storage temperature of the instant freezing chamber reaches Toffn＝TONn-TB2At/2, the instant freezing chamber air door is closed, wherein Tn refers to the preset temperature of the nth stage; t isB1Indicates the starting point floating temperature T of the instant freezing chamber in the starting process of the compressorB2Temperature difference between start and stop of instant freezing chamber, TONn>Tn>Toffn。
4. The method of claim 3, wherein: s1 includes:
s11: the temperature of the instant freezing chamber is adjusted by taking T1 as a target, the duration of the preset temperature reduction step S11 is a first temperature reduction time T1, a timing unit is adopted for timing, and in the time T1, when the temperature of the instant freezing chamber reaches a first starting temperature point TON1When the temperature of the instant freezing chamber reaches the first stop temperature point T, the air door of the instant freezing chamber is openedOFF1At the same time, the air door of the instant freezing chamber is closed, wherein TON1＝T1+TB1/2,TOFF1＝TON1–TB2When the timing unit accumulatesWhen the product time length reaches t1, stopping executing the step S11;
s12: the second temperature reduction target of the preset cooling object is T2, the temperature of the instant freezing chamber is adjusted and reduced by taking T2 as a target, the duration of the preset temperature reduction step S12 is a second temperature reduction time T2, a timing unit is adopted for timing, and in the time T2, when the temperature of the instant freezing chamber reaches a second starting temperature point TON2When the temperature of the instant freezing chamber reaches the second stop temperature point T, the air door of the instant freezing chamber is openedOFF2At the same time, the air door of the instant freezing chamber is closed, wherein TON2＝T2+TB1/2,TOFF2＝TON2–TB22, when the cumulative time length of the timer unit reaches t2, stopping executing the step S12;
thereby cooling down the temperature step by step until the step S1 n;
s1 n: presetting an nth cooling target of a cooling object as Tn, enabling the temperature of the instant freezing chamber to be adjusted and cooled by taking the Tn as the target, presetting the duration of the cooling step S1n as the nth cooling time Tn, timing by adopting a timing unit, and when the temperature of the instant freezing chamber reaches the nth starting temperature point T within the Tn time, counting by adopting the timing unitONnWhen the instant freezing chamber temperature reaches the nth shutdown temperature point T, the air door of the instant freezing chamber is openedOFFnAt the same time, the air door of the instant freezing chamber is closed, wherein TONn＝Tn+TB1/2,TOFFn＝TONn–TB2And/2, n is more than or equal to 1, n is a natural number, and when the accumulated time length of the timing unit reaches tn, the step S1n is stopped.
5. The control method according to any one of claims 3 and 4, wherein in the step S11, the T1 is in the range of 0 ℃ to 5 ℃, and the T1 is in the range of 2h to 4 h.
6. The control method as set forth in claim 5, wherein the final temperature decrease target range of the supercooling temperature decrease process is-5 ℃ to-20 ℃, and the temperature difference of the temperature decrease between the steps S12 to S1n is 0 ℃ to 2 ℃ excluding 0 ℃.
7. The control method according to any one of claims 1 to 6, wherein the supercooling release process S2: starting an oscillating device, increasing the rotating speed of a fan of a condenser to relieve the overcooling state of a cooling object, presetting the starting time of the oscillating device as t ', presetting the duration of the step S2 as t, adopting a timing unit to respectively time t ' and t, closing the oscillating device when the accumulated time of the timing unit reaches t ', and stopping executing S2 when the accumulated time of the timing unit reaches t, wherein the range of t ' and t is 10h, and t is more than or equal to t and more than t ', and t is more than 0 h.
8. The control method as set forth in claim 7, wherein the oscillation means is a mechanical physical oscillation means, and the applied oscillation frequency is in the range of 50 times/min to 60 times/min.
9. The control method according to claim 8, wherein in the step S11, the compressor rotation speed is set to M2, the condenser fan rotation speed is set to P1; in the steps S12-S1 n, the rotating speed of the compressor is set to M1, and the rotating speed of the fan of the condenser is set to P1; in the step S2, the rotating speed of the compressor is set to be M1, and the rotating speed of the fan of the condenser is set to be P2; wherein M2> M1, P2> P1.
10. The control method as set forth in claim 9, wherein said P2 is a condenser fan speed maximum.
11. The method according to any one of claims 1 to 10, wherein the conventional refrigeration preservation process S3: the normal refrigeration preservation temperature of a preset cooling object is T, and when the temperature of the instant freezing room reaches the starting temperature point T of the normal refrigeration preservationONWhen the temperature of the instant freezing chamber reaches the normal refrigeration preservation shutdown temperature point TOFFAt the same time, the air door of the instant freezing chamber is closed, wherein TON＝T+TB1/2,TOFF＝TON–TB2/2。
12. The method as set forth in claim 11, wherein in said normal refrigeration storing process S3, the compressor rotation speed is set to M1 and the condenser fan rotation speed is set to P1.
13. The control method according to any one of claims 2 to 12, wherein the M1 ranges from 1200rpm to 1400rpm, the M2 ranges from 3800rpm to 4500rpm, the P1 ranges from 1200rpm to 1500rpm, and the P2 ranges from 1600rpm to 1900 rpm.
14. A control system, characterized by: the control system adopts the control method of any one of claims 2 to 13.
15. The control system of claim 14, comprising: controller, temperature regulation apparatus, temperature sensor, timing unit, its characterized in that: a controller for receiving information from the temperature sensor and the timing unit and controlling the temperature adjusting device to adjust the temperature of the instant freezing room; the temperature adjusting device is used for adjusting the instantaneous freezing chamber to operate according to a preset temperature; the temperature sensor is used for detecting the temperature of the instant freezing chamber in real time; and the timing unit is used for setting and monitoring the time length.
16. A refrigerator provided with an instant freezing chamber, characterized in that: the refrigerator having a control system as claimed in any one of claims 14,15 or using a method as claimed in any one of claims 1 to 14.
CN201911046497.XA 2019-10-30 2019-10-30 Instant freezing storage control method and refrigerator Pending CN110953831A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001086967A (en) * 1999-09-22 2001-04-03 Airtech Japan Ltd Method for freezing and freezer using variance of magnetic field or electric field
CN101636625A (en) * 2007-04-17 2010-01-27 三菱电机株式会社 Refrigerator and method of refrigeration
JP2012042126A (en) * 2010-08-19 2012-03-01 Marushie Machinery Kk Freezer
CN109253572A (en) * 2018-09-12 2019-01-22 合肥晶弘电器有限公司 A kind of refrigeration equipment and its control method of achievable supercooling preservation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001086967A (en) * 1999-09-22 2001-04-03 Airtech Japan Ltd Method for freezing and freezer using variance of magnetic field or electric field
CN101636625A (en) * 2007-04-17 2010-01-27 三菱电机株式会社 Refrigerator and method of refrigeration
JP2012042126A (en) * 2010-08-19 2012-03-01 Marushie Machinery Kk Freezer
CN109253572A (en) * 2018-09-12 2019-01-22 合肥晶弘电器有限公司 A kind of refrigeration equipment and its control method of achievable supercooling preservation

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Application publication date: 20200403