CN110906677A - Instant freezing storage control method and refrigerator - Google Patents
Instant freezing storage control method and refrigerator Download PDFInfo
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- CN110906677A CN110906677A CN201911045236.6A CN201911045236A CN110906677A CN 110906677 A CN110906677 A CN 110906677A CN 201911045236 A CN201911045236 A CN 201911045236A CN 110906677 A CN110906677 A CN 110906677A
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- 238000007710 freezing Methods 0.000 title claims abstract description 174
- 230000008014 freezing Effects 0.000 title claims abstract description 173
- 238000000034 method Methods 0.000 title claims abstract description 96
- 238000003860 storage Methods 0.000 title claims abstract description 49
- 238000001816 cooling Methods 0.000 claims abstract description 124
- 238000004781 supercooling Methods 0.000 claims abstract description 71
- 230000008569 process Effects 0.000 claims abstract description 64
- 238000005057 refrigeration Methods 0.000 claims abstract description 40
- 230000001965 increasing effect Effects 0.000 claims abstract description 14
- 238000004321 preservation Methods 0.000 claims description 20
- 230000009467 reduction Effects 0.000 claims description 18
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000033228 biological regulation Effects 0.000 claims description 2
- 235000016709 nutrition Nutrition 0.000 abstract description 7
- 230000035764 nutrition Effects 0.000 abstract description 7
- 239000013078 crystal Substances 0.000 abstract description 5
- 235000011389 fruit/vegetable juice Nutrition 0.000 abstract description 4
- 230000001052 transient effect Effects 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 description 7
- 230000001276 controlling effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 235000013372 meat Nutrition 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000000796 flavoring agent Substances 0.000 description 2
- 235000019634 flavors Nutrition 0.000 description 2
- 238000011946 reduction process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 235000013611 frozen food Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
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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
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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
- 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
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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
- 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
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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
- F25D2600/00—Control issues
- F25D2600/02—Timing
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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
- 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 instant freezing chamber is controlled in a staged cooling mode in the cooling and cooling process, so that after a cooling object stably enters the supercooling state, supercooling is removed by simultaneously increasing the rotating speed of the compressor and the rotating speed of the fan of the condenser, the cooling object quickly passes through the maximum ice crystal zone, instant freezing of the cooling object is realized, the cooling object is cut after being taken out in the 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
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 simultaneously increasing the rotating speed of the compressor and the rotating speed of the fan of the condenser, 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: a supercooling release process for releasing the supercooling state of the cooling object by simultaneously increasing the rotating speed of the compressor and the rotating speed of the condenser fan;
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: the supercooling relieving process is carried out, and the supercooling state of the cooling object is relieved by simultaneously increasing the rotating speed of the compressor and the rotating speed of the fan of the condenser;
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 timer 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 timer accumulated time length reaches t1, stopping executing the step S11;
s12: the second preset cooling target of the cooling object is T2, the instant freezing chamber temperature is adjusted to be cooled by taking T2 as a target, the duration of the step S12 of the preset cooling is the second cooling time T2, a timer is adopted for timing, and in the time T2, when the temperature of the instant freezing chamber reaches the 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 openedOFF2While closing the flash freezing chamberAir door, wherein TON2＝T2+TB1/2,TOFF2＝TON2–T B22, when the timer accumulated time length 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 timer, and when the temperature of the instant freezing chamber reaches the nth starting temperature point T within the Tn time, counting by adopting the timerONnWhen 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, stopping executing the step S1n when the accumulated time length of the timer reaches tn, wherein n is more than or equal to 1 and is a natural number.
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: and simultaneously increasing the rotating speeds of the compressor and the condenser fan to remove the overcooling state of the cooling object, presetting the duration of the step S2 as t, timing by adopting a timer, and stopping executing S2 when the accumulated time of the timer reaches t, wherein the range of t is 0-10 h.
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 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 M2, and the condenser fan rotation speed is set to P2; in step S3, the compressor speed is set to M1 and the condenser fan speed is set to P1, where M2> M1 and P2> P1.
Preferably, M2 is the compressor speed maximum and P2 is the condenser fan speed maximum.
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, time-recorder, its characterized in that: a controller for receiving information from the temperature sensor and the timer 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 timer 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 control diagram in embodiments 1 and 2 of the present invention;
fig. 6 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; 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-timer.
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, the present embodiment provides a flash storage refrigerator including:
and an instant freezing chamber 2 for receiving the cooling object and performing instant freezing storage on the cooling object.
And the refrigerating system 4 is used for controllably providing cold air to 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, controlling the temperature adjusting device 54 to adjust the temperature of the instant freezing chamber 2, reducing or maintaining the temperature of the instant freezing chamber 2 according to the preset target temperature of each step, and realizing instant freezing storage of a cooling object.
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 having 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 refrigeration system 4 to adjust the temperature of the instant freezer 2; a temperature adjusting device 54 for adjusting the temperature of the instant freezing chamber 2 to operate at a preset target temperature; a temperature sensor 53 for detecting the temperature of the instant freezing 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, 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.
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 56, 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 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. During the temperature adjustment, the temperature sensor 53 detects the real-time temperature inside the instant freezing chamber 2, and when the temperature is detectedThe temperature of the instant freezing chamber 2 is measured to reach a 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. The timer 56 is used for timing in the implementation process of this step, and when the accumulated time length of the timer 56 reaches t1, the execution of 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 process of adjusting the temperature, the temperature of the air conditioner is adjusted,the temperature sensor 53 detects the real-time temperature inside the flash chamber 2, and when it is detected that the temperature of the flash chamber 2 reaches 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 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. The timer 56 is used for timing in the implementation process of this step, and when the accumulated time length of the timer 56 reaches t2, the execution of 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. The timer 56 is used for timing in the implementation process of this step, and when the accumulated time length of the timer 56 reaches t3, the execution of 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 TOFFnAt 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. The timer 56 is used for timing in the implementation process of this step, and when the accumulated time length of the timer 56 reaches tn, the step S1n is stopped.
Preferably, the nth starting temperature point TONn＝Tn+TB1Third shutdown temperature Point TOFFn＝TONn–TB2/2。
Preferably, the normal refrigeration startup temperature point TON＝T+TB1/2, normal refrigeration shutdown temperature point TOFF＝TON–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 a supercooling relieving process is carried out, and the supercooling state of the cooling object is relieved by simultaneously increasing the rotating speed of the compressor and the rotating speed of the fan of the condenser.
Specifically, the method comprises the following steps:
s2: presetting the duration of step S2 as t, controlling the compressor 41 to operate at M2 by the control system 5 through the frequency conversion board 55, controlling the condenser fan to operate at P2, controlling the capillary flow as V1, timing by the timer 56 in the process, and stopping executing step S2 when the accumulated time of the timer 56 reaches t.
Preferably, the preset duration t of step S2 is in the range of 0 < t.ltoreq.10 h.
Preferably, P1 < P2, M1 < M2, P2 is the maximum rotation speed of the fan of the condenser, and M2 is the maximum rotation speed of the compressor.
In step S2, the rotation speeds of the compressor and the condenser fan are simultaneously increased to the maximum, so that the cold air entering the instant freezing chamber 2 is increased, the maximum cold air stimulation is given to the cooling object, the cooling object rapidly passes through the maximum ice crystal generation zone, and the moisture in the cooling object instantly forms granular ice crystals with uniform size, thereby realizing instant freezing of the cooling object and avoiding the cells of the cooling object from being damaged.
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: and presetting the conventional refrigeration preservation temperature of the cooling object as T, and enabling the instant freezing chamber 2 to be 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 to prevent cold air from enteringThe 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 compressor 41 rotation speed, the condenser fan rotation speed, and the capillary flow rate variation in each step of this example are shown in table 1.
TABLE 1
| Step (ii) of | Condenser fan speed | Capillary flow | Speed of |
| S11 | P1 | V1 | M2 |
| S12 | P1 | V1 | M1 |
| S13 | P1 | V1 | M1 |
| S14 | P1 | V1 | M1 |
| S15 | P1 | V1 | M1 |
| S2 | P2 | V1 | M2 |
| S3 | P1 | V1 | M1 |
In the embodiment, the temperature change of the cooling object is shown in fig. 6, 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 the supercooling cooling, so that the cooled object can stably enter the supercooling state, the supercooling state is prevented from being removed in advance, the supercooling is removed by simultaneously increasing the rotating speed of the compressor and the rotating speed of the fan of the condenser, the cooled object is instantly frozen, and the cooled object is taken out and then is cut well by the arrangement in the conventional refrigeration storage stage.
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 speeds of the compressor and the condenser fan are increased so as to stimulate a large amount of cold air to the cooling object to realize the supercooling release, and the conventional refrigeration storage enables the cooling object to be kept in a good cutting state, thereby avoiding nutrition loss caused by the large amount of juice of the cooling object flowing out and meeting the storage requirements of users.
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 (14)
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: a supercooling release process for releasing the supercooling state of the cooling object by simultaneously increasing the rotating speed of the compressor and the rotating speed of the condenser fan;
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: 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: a supercooling release process for releasing the supercooling state of the cooling object by simultaneously increasing the rotating speed of the compressor and the rotating speed of the condenser fan;
s3: and in the conventional refrigeration preservation process, the object to be cooled after supercooling release is subjected to conventional refrigeration preservation.
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 timer 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–TB22, when the timer accumulated time length reaches t1, stopping executing the step S11;
s12: the second preset cooling target of the cooling object is T2, the temperature of the instant freezing chamber is adjusted and cooled by taking T2 as a target, the duration of the preset cooling step S12 is the second cooling time T2, and a timer is adopted for timingWhen the instant freezing room temperature reaches the second starting temperature point T within the time T2ON2When 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 timer accumulated time length 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 timer, and when the temperature of the instant freezing chamber reaches the nth starting temperature point T within the Tn time, counting by adopting the timerONnWhen 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, stopping executing the step S1n when the accumulated time length of the timer reaches tn, wherein n is more than or equal to 1 and is a natural number.
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: and simultaneously increasing the rotating speed of the compressor and the rotating speed of the fan of the condenser to remove the overcooling state of the cooling object, presetting the duration of the step S2 as t, timing by adopting a timer, and stopping executing S2 when the accumulated time of the timer reaches t, wherein the range of t is 0-10 h.
8. The method according to any one of claims 1 to 7, 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。
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 M2, and the rotating speed of the fan of the condenser is set to be P2; in the step S3, the compressor rotation speed is set to M1, and the condenser fan rotation speed is set to P1, where M2> M1 and P2> P1.
10. The control method as set forth in claim 9, wherein said M2 is a compressor speed maximum and said P2 is a condenser fan speed maximum.
11. The control method according to any one of claims 2 to 10, wherein the M1 is in a range of 1200rpm to 1400rpm, the M2 is in a range of 3800rpm to 4500rpm, the P1 is in a range of 1200rpm to 1500rpm, and the P2 is in a range of 1600rpm to 1900 rpm.
12. A control system, characterized by: the control system adopts the control method of any one of claims 2 to 11.
13. A control system according to claim 12, comprising: controller, temperature regulation apparatus, temperature sensor, time-recorder, its characterized in that: a controller for receiving information from the temperature sensor and the timer 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 timer is used for setting and monitoring the time length.
14. 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 13.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101636625A (en) * | 2007-04-17 | 2010-01-27 | 三菱电机株式会社 | Refrigerator and method of refrigeration |
| 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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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101636625A (en) * | 2007-04-17 | 2010-01-27 | 三菱电机株式会社 | Refrigerator and method of refrigeration |
| 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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