CN110701861A - Instant freezing chamber control method and refrigerator - Google Patents
Instant freezing chamber control method and refrigerator Download PDFInfo
- Publication number
- CN110701861A CN110701861A CN201911046589.8A CN201911046589A CN110701861A CN 110701861 A CN110701861 A CN 110701861A CN 201911046589 A CN201911046589 A CN 201911046589A CN 110701861 A CN110701861 A CN 110701861A
- Authority
- CN
- China
- Prior art keywords
- cooling
- stage
- freezing chamber
- temperature
- instant freezing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007710 freezing Methods 0.000 title claims abstract description 178
- 230000008014 freezing Effects 0.000 title claims abstract description 178
- 238000000034 method Methods 0.000 title claims abstract description 145
- 238000001816 cooling Methods 0.000 claims abstract description 135
- 230000008569 process Effects 0.000 claims abstract description 102
- 238000004781 supercooling Methods 0.000 claims abstract description 92
- 238000004321 preservation Methods 0.000 claims abstract description 30
- 238000005057 refrigeration Methods 0.000 claims abstract description 27
- 238000003860 storage Methods 0.000 claims abstract description 19
- 238000007667 floating Methods 0.000 claims description 6
- 230000009467 reduction Effects 0.000 abstract description 12
- 238000009826 distribution Methods 0.000 abstract description 3
- 235000013305 food Nutrition 0.000 description 54
- 230000001276 controlling effect Effects 0.000 description 15
- 239000013078 crystal Substances 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 238000010586 diagram Methods 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000000796 flavoring agent Substances 0.000 description 4
- 235000019634 flavors Nutrition 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 235000013372 meat Nutrition 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000002194 freeze distillation Methods 0.000 description 2
- 235000012055 fruits and vegetables Nutrition 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000011946 reduction process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 235000013611 frozen food Nutrition 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000013622 meat product Nutrition 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 239000013526 supercooled liquid Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- 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
Landscapes
- 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 control method of an instant freezing chamber and a refrigerator. The instant freezing chamber control method comprises a multi-stage supercooling and cooling process, a supercooling removing process and a conventional refrigeration and preservation process. In the multi-stage supercooling and cooling process, the cooled object is cooled in stages, and the cooling of each stage is realized by cooling the cooled object in stages. And each temperature reduction stage controls the instant freezing chamber for storing the cooled object to run for Tn time according to the preset temperature Tn, so that the temperature distribution of the instant freezing chamber for storing the cooled object in the process of a single temperature reduction stage is more uniform. In the supercooling release process, the rotating speed of the compressor is increased and the rotating speed of the condensing fan is increased, so that the non-freezing equilibrium state of the cooled object in the supercooling state is destroyed, the supercooling state is fully released, the cooled object is instantly frozen (instant freezing for short), and the frozen cooled object is stored at the conventional refrigeration storage temperature for a long time.
Description
Technical Field
The invention relates to a control method of an instant freezing chamber and a refrigerating system, in particular to a control method capable of realizing instant freezing of food and a refrigerator.
Background
In order to better maintain the nutrition of frozen food, the food is preserved by adopting the freezing modes of ordinary freezing, quick freezing and the like, but the traditional ordinary freezing has the defects of uneven temperature control in a freezing chamber, long-time stay in the 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 refrigerators. The supercooling freezing technology can ensure that the preserved object forms uniform and fine ice crystals after the supercooling process, can better keep the flavor of food compared with the common freezing method, and is more favorable for cutting.
The existing technology for supercooling preservation has the following disadvantages:
(1) the supercooling is released in advance due to uneven temperature reduction in the supercooling process.
(2) The supercooling relieving effect is not good, and the wind speed or the wind volume is increased.
(3) The supercooling depth is shallow, and the state of supercooling cannot be well entered.
Disclosure of Invention
In view of the above, the present invention provides a method for controlling an instant freezing chamber and a refrigeration system.
The invention relates to a control method of an instant freezing chamber and a refrigerator. The instant freezing chamber control method comprises a multi-stage supercooling and cooling process, a supercooling removing process and a conventional refrigeration and preservation process. In the multi-stage supercooling and cooling process, the cooled object is cooled in stages, and the cooling of each stage is realized by cooling the cooled object in stages. And each temperature reduction stage controls the instant freezing chamber for storing the cooled object to run for Tn time according to the preset temperature Tn, so that the temperature distribution of the instant freezing chamber for storing the cooled object in the process of a single temperature reduction stage is more uniform. In the supercooling release process, the rotating speed of the compressor is increased and the rotating speed of the condensing fan is increased, so that the non-freezing equilibrium state of the cooled object in the supercooling state is destroyed, the supercooling state is fully released, the cooled object is instantly frozen (instant freezing for short), and the frozen cooled object is stored at the conventional refrigeration storage temperature for a long time.
Specifically, the method comprises the following steps:
the invention provides a refrigerator, which comprises:
the instant freezing chamber, a cooling device for providing cold energy for the instant freezing chamber and a control system for controlling the cooling device to carry out instant freezing preservation on the instant freezing chamber are arranged;
the instant freezing preservation process of the cooled object in the instant freezing chamber is realized by implementing cooling control on the instant freezing chamber;
the cooling device comprises a compressor, an evaporator, a condenser and a capillary tube;
a condenser fan is arranged on the condenser;
the control system comprises a controller, a timer, a temperature sensor and a temperature adjusting device;
the instant freezing preservation comprises a multi-stage supercooling and cooling process, a supercooling relieving process and a conventional refrigeration preservation process;
the control system carries out staged cooling on the cooled object according to the preset operation target temperature and the preset operation duration of each multi-stage supercooling cooling process; and in the final stage of the multi-stage supercooling and cooling process, after the multi-stage supercooling and cooling process is completed within a preset time period, the rotating speed of the compressor is increased, the rotating speed of the condenser fan is controlled to be increased, the increased rotating speed of the compressor and the increased rotating speed of the condenser fan are kept for a time ta, and supercooling is removed.
The invention also provides a method for controlling the instant freezing chamber, which carries out instant freezing preservation on the instant freezing chamber by controlling a cooling device, and is characterized in that:
the instant freezing preservation process of the cooled object in the instant freezing chamber is realized by implementing cooling control on the instant freezing chamber;
the instant freezing preservation process with a multi-stage supercooling and cooling process, a supercooling relieving process and a conventional refrigeration preservation process is carried out on the cooled object in the instant freezing chamber through a cooling device;
the multi-stage supercooling and cooling process comprises n cooling stages, wherein each cooling stage of the n cooling stages is provided with a preset operation target temperature and a preset operation duration; the multi-stage supercooling and cooling process carries out staged cooling on the cooled object according to a preset running target temperature and a preset running time;
and in the final stage of the multi-stage supercooling and cooling process, after the preset stage cooling is finished within a preset time period: controlling the rotation speed of the compressor to increase from the first rotation speed M1 to the second rotation speed M2, and simultaneously controlling the rotation speed of the fan of the condenser to increase from the first rotation speed S1 of the fan to the second rotation speed S2 of the fan; and the compressor rotating speed maintaining second rotating speed M2 and the condenser fan rotating speed maintaining fan second rotating speed S2 jointly run for preset ta time, and supercooling is removed.
Preferably, the value range of the preset operation ta time is 0h < ta ≦ 10 h.
Preferably, in the 1 st stage of the multi-stage supercooling and cooling process, the rotation speed of the compressor is operated at the second rotation speed M2, and after the temperature reduction in the 1 st stage of the multi-stage supercooling and cooling process is finished, the compressor is operated at the first rotation speed M1 in the subsequent multi-stage supercooling and cooling process; in the final stage of the multi-stage supercooling and cooling process, after the preset cooling is finished in the preset time period, the rotating speed of the compressor is controlled to be increased to the second rotating speed M2, and the rotating speed of the fan of the condenser is controlled to be increased to the second rotating speed S2 of the fan, so that the cooling capacity of the instant freezing chamber reaches the maximum value.
Preferably, the n cooling stages are at least at the last cooling stage, and after reaching the cooling target, the n cooling stages are stabilized at the preset target temperature for a period of time until the preset time of the cooling process is finished.
Preferably, n cooling stages exist in the cooling process, the n cooling stages are divided into 1 st stage, … … i stage and … … th stage, wherein the ith cooling stage represents any one stage of the n cooling stages, i is more than or equal to 1 and less than or equal to n, n is a natural number and is more than or equal to 2, the start and stop of the air supply device are controlled according to the preset temperature of the cooling stages, namely T is used for controlling the start and stop of the air supply deviceONi＝Ti+TB1The temperature T is used as the starting temperature point of the air supply device in the ith stageoffi＝TONi-TB2[ 2 ] shutdown temperature of air supply device as the i-th stageA point wherein TB1Indicates the floating temperature T of the starting point of the instantaneous freezing chamber in the starting process of the compressorB2Temperature difference between instant freezing chamber start and stop, TONi>Ti>Toffi。
In the i-th stage:
when the storage temperature of the instant freezing chamber reaches TONi＝Ti+TB1When the pressure exceeds 2, the air supply device is controlled to work;
when the storage temperature of the instant freezing chamber reaches Toffi＝TONi-TB2And when the pressure exceeds 2, controlling the air supply device not to work.
Preferably, the air supply device is a cold air supply door for performing cold supply control of the instant freezing chamber.
Preferably, the value range of the time ti for cooling control on the cooled object in the ith stage in the multi-stage supercooling and cooling process is 0h < ti ≦ 8 h.
Preferably, the preset target temperature of the supercooling cooling stage satisfies: t1 is more than or equal to 0 ℃ at the temperature of 5 ℃; tn is more than or equal to-15 ℃, T2 is more than or equal to 0 ℃, i is more than or equal to 2 and less than or equal to n.
Preferably, the conventional refrigeration storage process is carried out such that the cooled material is operated at a predetermined temperature Tc of-7 ℃ Tc <0 ℃.
Preferably, the control method for the conventional preservation process to operate according to the preset temperature Tc comprises the following steps: when the temperature of the instant freezing chamber (12) reaches the starting temperature point TONc, opening an air door of the instant freezing chamber (12); when the temperature of the instant freezing chamber reaches a first shutdown temperature point TOFFc, closing the air door of the instant freezing chamber; t isONc＝Tc+TB1/2,TOFFc＝TONc–TB2/2；TB1Indicating the floating temperature of a starting point of an instant freezing chamber in the starting process of the compressor; t isB2The temperature difference between the start and stop of the instant freezing chamber.
Preferably, TB1The value range of (A) is 0 DEG C<TB1≤2℃，TB2The value range of (A) is 0 DEG C<TB2≤2℃。
Preferably, in the multi-stage supercooling and cooling process, the condenser fan speed is kept at the fan first speed S1 during the cooling process of the cooled object in stages.
Preferably, the conventional preservation process compressor is operated at a first speed M1 and the condenser fan speed is operated at a fan first speed S1.
The invention also provides a refrigerator which is provided with the control system for realizing the instant freezing chamber control method. The refrigerator comprises an instant freezing chamber, and the instant freezing chamber adopts the instant freezing chamber control method to carry out instant freezing storage on the cooled object.
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 exemplary embodiments of the present disclosure, and other drawings may be derived by those skilled in the art without inventive effort.
FIG. 1 is a control logic diagram of an embodiment of the present invention;
FIG. 2 is a diagram of a refrigeration system according to an embodiment of the present invention;
FIG. 3 is a refrigerant flow diagram according to an embodiment of the present invention;
FIG. 4 is a structural view of a refrigerator according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a freezing curve of water at normal freezing in accordance with an embodiment of the present invention;
FIG. 6 is a schematic diagram of the freezing curve of water in an embodiment of the present invention in the presence of a supercooling freezing process;
FIG. 7 is a schematic diagram of a refrigerator control system according to an embodiment of the present invention;
FIG. 8 is a graph of temperature versus time for a food product stored in a flash chamber throughout a sub-cooling process in accordance with an embodiment of the present invention;
in the figure:
refrigerator-10; a refrigerating chamber-11; instant freezing chamber-12; freezing chamber-13;
a refrigeration system-20; a refrigeration evaporator-21; a muffler assembly-220; a return gas heat exchange section-221; a compressor-23; condenser-24; anti-condensation pipe-25; a drier-filter-26; capillary-27;
control system-30; a controller-31; a display-32; a temperature sensor-33; a temperature regulating device-34; a frequency conversion plate-35; a timer-36; a condenser fan-37;
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and "a" and "an" generally include at least two, but do not exclude at least one, unless the context clearly dictates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
The instant freezing technique is briefly described below with reference to fig. 5 and 6.
The supercooled state refers to a liquid having a temperature lower than the freezing point but not solidified or crystallized, and is called a supercooled liquid. There is a great demand for long-term preservation of foods such as fresh meat, fruits and vegetables in daily life. The fresh meat, fruits and vegetables and other foods contain a large amount of water, and the ice crystals are large in size and usually form needle-shaped ice crystals during ordinary freezing, so that cells can be damaged, a large amount of juice flows out during thawing, large ice crystals can extrude the tissue structure of the foods, the foods lose delicate flavor substances, and the user experience is poor.
The condition of the food entering the overcooling state mainly influences whether the food can well enter the overcooling state or not according to the temperature reduction speed, the air temperature distribution around the sample and the difference value of the surface temperature and the central temperature of the food. Fig. 5 shows a schematic diagram of a normal freezing and freezing curve of water, namely a freezing and freezing curve without supercooling, and fig. 6 shows a schematic diagram of a freezing curve of water with supercooling freezing process. Analysis shows that the ordinary freezing process of water in fig. 5 is that the water slowly begins to freeze from the surface of the water with the increase of time. In contrast, fig. 6 shows the supercooling freezing process of water, in the initial stage of the freezing process, even if the freezing point of water is exceeded, the water does not start to freeze but continues to remain in a liquid state, and when the temperature drops to the nucleation point or a certain stimulus is externally applied, the water in the supercooled state instantaneously starts to freeze on the surface and inside.
The principle of the supercooling freezing technology is that ice nuclei in water are uniformly distributed and are in a large number when the ice nuclei begin to freeze after being in a supercooling state, most of ice crystals formed after freezing are in an elliptic granular shape, and the ice crystals have small volume and uniform size and are different from needle-shaped ice crystals which are generated by common freezing and are easy to damage cells. The food in the supercooled state can better keep the delicate flavor of the food, reduce the damage of ice crystals to food cells, reduce the outflow of the contents of the food cells after unfreezing and improve the user experience.
The basic inventive idea is as follows:
the invention provides a method for controlling an instant freezing chamber and a refrigerator, which ensure that a cooled object in the instant freezing chamber 12 enters a supercooled state through multi-stage temperature reduction in a supercooling temperature reduction stage. In the supercooling relieving stage, the rotating speed of the compressor is increased, the rotating speed of the condensing fan is increased, and the supply of cold energy is increased, so that the object to be cooled in the supercooling state in the instant freezing chamber is relieved from the supercooling state, the instant freezing is realized, and uniform and fine ice crystals are formed. And finally, the temperature of the instant freezing chamber 12 is controlled to be within the range of the conventional refrigeration preservation temperature, so that the cooled object is preserved for a long time.
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings 1-4, and fig. 7 and 8:
the present embodiment provides a refrigeration system as shown in fig. 2. The system comprises but is not limited to the following components: the refrigeration evaporator 21, the air return pipe assembly 220, the air return heat exchange section 221, the compressor 23, the condenser 24, the condensation preventing pipe 25, the drying filter 26 and the capillary tube 27.
As shown in fig. 3, the refrigerant flow direction when the refrigeration system is in operation is: compressor → condenser → anti-condensation tube → dry filter → capillary tube → refrigeration evaporator → return air tube component → compressor.
As shown in fig. 7, the control system according to the present embodiment includes: the controller 31, the display 32, the temperature sensor 33, the temperature adjusting device 34, the frequency conversion board 35, the timer 36 and the condenser fan 37, wherein the controller 31 is in control connection with the display 32, the temperature sensor 33, the temperature adjusting device 34, the frequency conversion board 35, the timer 36 and the condenser fan 37 to control the rotating speed of the compressor. The control system is used for realizing the instant freezing chamber control method provided by the invention.
Further, the controller 31 in the control system sends a compressor rotation speed adjusting instruction to the frequency conversion plate 35, and the frequency conversion plate 35 adjusts the rotation speed of the compressor 23. The inverter board in this embodiment is only one example of a compressor speed adjusting device, and should not be understood as the only means for adjusting the compressor speed by using the inverter board.
Further, the temperature adjusting device 34 adjusts the temperature of the instant freezing chamber by using a cold air supply door of the instant freezing chamber.
Further, the user may select the instant freezing function through the display 32, and the control system performs the instant freezing chamber control method when the user selects the instant freezing function.
The embodiment also provides a refrigerator which is provided with the control system for realizing the instant freezing chamber control method. The refrigerator comprises an instant freezing chamber 12, and the instant freezing chamber 12 carries out instant freezing storage on cooled objects by adopting the instant freezing chamber control method. The cooled material can be food, especially fresh meat food.
As shown in fig. 4, the refrigeration system executing any control method of the present embodiment may be a refrigerator, the refrigerator includes a refrigerating chamber 11, an instant freezing chamber 12, and a freezing chamber 13, and the refrigerator according to the present invention has a control system as shown in fig. 7, and the control system may enable the refrigerator to perform an instant freezing control process on food placed in the instant freezing chamber 12.
The instant freezing chamber 12 in this embodiment can realize various low-temperature storage processes of food, such as a supercooling non-freezing storage process, a supercooling freezing removal storage process, a low-temperature refrigeration function, a freezing process, and the like. The user can select the storage process according to the self needs, and the instant freezing chamber can only realize the instant freezing storage process shown in the embodiment.
The instant freezing chamber control method according to the present embodiment will be described below.
As shown in fig. 1, a method for controlling an instant freezer includes the steps of:
s01: a multi-stage cooling and supercooling process:
n cooling stages are arranged in the multi-stage cooling and supercooling process and are divided into the 1 st stage, … … i stage and the … … th stage, wherein the ith cooling stage represents any one stage of the n cooling stages, i is more than or equal to 1 and less than or equal to n, n is a natural number and is more than or equal to 2, and all the following limitations on any one stage are replaced by the ith stage.
1, cooling stage: the instant freezing chamber is controlled by the control device to operate at the preset temperature T1 for T1 time, and the compressor operates at the second rotating speed M2 during T1 time.
Further, the second compressor rotation speed M2 is the maximum compressor rotation speed.
Furthermore, T1 is more than 0 ℃ at the temperature of 5 ℃ or more, and T1 is more than 0h at the temperature of 8h or more.
The beneficial effects are that: when the food needs to be cooled, the rotating speed of the compressor is increased, so that the cooling capacity can be increased, the cooling rate of the instant freezing chamber is increased, the food is quickly stabilized near the temperature T1, and the temperature T1 is in a low-temperature interval above zero. Thereby shortening the preliminary preparation time for the food to enter the supercooled state. The first temperature reduction stage controls the instantaneous freezing chamber to operate according to the preset temperature T1, so that the temperature of the instantaneous freezing chamber is kept in a small-range temperature interval which is zero and contains the temperature T1, the overall temperature of the instantaneous freezing chamber is uniformly reduced in the subsequent multi-stage supercooling temperature reduction process, the temperature difference between the surface and the inside of the food placed in the instantaneous freezing chamber is smaller, and the food can smoothly enter a supercooling state in the subsequent staged temperature reduction process.
Further, before step S01, the method further includes the steps of: aS 01: the user selects the instant freeze function.
An i +1 th cooling stage: and after the step of the 1 st cooling stage is finished, the compressor operates at a first rotating speed M1, in the S01 multi-stage cooling and supercooling process, the condensing fan always operates at the first rotating speed S1 of the fan, and the rotating speed M2 of the compressor is more than M1. The cooling method has the beneficial effects that the rotating speed of the compressor at the (i + 1) th cooling stage is recovered to M1, and the cooling capacity can be reduced by reducing the rotating speed of the compressor. When the cooled food enters the overcooling state, the slow cooling rate and the low cooling capacity are needed, so that the effect that the cooled food successfully enters the overcooling state and is not easily released from the overcooling state can be realized, and therefore, the effect can be realized by reducing the rotating speed of the compressor.
The supercooling and cooling stage comprises n cooling stages, and each cooling stage of the n cooling stages implements cooling control on the food. In the present embodiment, the cooling control of the food is performed by performing the cooling control of the instant freezing chamber 12. And (3) controlling the temperature of the instant freezing chamber 12 according to the preset temperature Ti of the temperature reduction stage, and simultaneously controlling the operation Ti time of the ith temperature reduction stage.
Further, during the control process of air cooling on the food in the i stage, T is usedONi＝Ti+TB12 as the i-th stageStarting temperature point of air supply device, Toffi＝TONi-TB2[ ii ] 2 as the shutdown temperature point of the blower in the i-th stage, TB1Indicates the floating temperature T of the starting point of the instant freezing chamber (2) in the starting process of the compressorB2Temperature difference between instant freezing chamber start and stop, TONi>Ti>Toffi。
In the i-th stage:
when the storage temperature of the instant freezing chamber reaches TONi＝Ti+TB1When the pressure exceeds 2, the air supply device is controlled to work;
when the storage temperature of the instant freezing chamber reaches Toffi＝TONi-TB2And when the pressure exceeds 2, controlling the air supply device not to work.
Furthermore, the value range of the time ti for cooling control on the cooled object in the ith stage in the multi-stage supercooling and cooling process is 0h < ti is less than or equal to 8 h. The beneficial effects are that: the control of the cooling time tn is implemented through the timing device in a single cooling stage, which is beneficial to reducing the temperature difference between the surface and the interior of the food in the single cooling stage, increasing the success rate of the food entering the supercooling state and avoiding the condition that the food which enters the supercooling state is easily released from the supercooling state in advance.
Further, TB1The value range of (A) is 0 DEG C<TB1≤2℃，TB2The value range of (A) is 0 DEG C<TB2≤2℃。
Further, the cooling air door is provided with a baffle capable of realizing mechanical control.
Furthermore, the value range of the first rotating speed M1 of the compressor is that the rotating speed is more than or equal to 1200rpm and less than or equal to M1 and less than or equal to 1400rpm, and the value range of the second rotating speed M2 of the compressor is that the rotating speed is more than or equal to 3800rpm and less than or equal to M2 and less than or equal to 4500 rpm.
Furthermore, Tn is more than or equal to 15 ℃ and less than or equal to 0 ℃ in the (i + 1) th cooling stage in the multi-stage cooling and supercooling process, and T2 is more than or equal to 0 ℃ and i is more than or equal to 2 and less than or equal to n.
S02: supercooling release process: at the final stage of the multi-stage supercooling and cooling process, after the preset stage cooling is completed within the preset time period, the compressor rotating speed adjusting device is controlled to increase the rotating speed of the compressor from the first rotating speed M1 to the second rotating speed M2, meanwhile, the condenser fan is controlled to increase the first rotating speed S1 of the fan to the second rotating speed S2 of the fan, the rotating speed of the compressor is kept at the second rotating speed M2, and the rotating speed of the condenser fan is kept at the second rotating speed S2 of the fan to operate together for the preset ta time, so that supercooling is removed.
Further, the second rotation speed M2 to which the compressor is increased is the maximum rotation speed of the compressor.
Further, when the compressor runs at the M2 rotating speed and the condenser fan runs at the S2 rotating speed, the instant freezing chamber obtains the maximum cooling capacity.
This has the advantage that the supercooled state is unstable, and that a certain stimulus is required to release the supercooled state, and this stimulus may be a temperature factor or a physical factor. On one hand, by increasing the rotating speed of the compressor, the higher the rotating speed, the higher the compression ratio in unit time, the higher the displacement is, the circulation of the refrigerant is accelerated, and the refrigeration effect is improved; and simultaneously, the rotating speed of a fan of the condenser is increased to increase the cooling capacity of the instant freezing chamber in the supercooling release stage. The rotating speed of the compressor is increased, and the rotating speed of the fan of the condenser is increased at the same time, so that the overcooling state of food with larger volume in the instant freezing chamber can be relieved and distributed more conveniently, and the formed ice crystals are distributed more uniformly. The rotating speed of the compressor is increased in the instant freezing chamber to change the cooling capacity of the food, so that the defect that the food is dehydrated and dried when the cooling capacity is increased by an air cooling method is overcome.
After the food is released from the overcooling state, uniform, fine and smooth ice crystals can be quickly formed to achieve the effect of instant freezing, and the formed fine ice crystals have smaller damage to tissues, fibers or cells of the food, particularly meat products, compared with large needle-shaped ice crystals formed by common freezing. The loss of nutrient substances of the food after thawing can be better avoided, and the flavor of the food can be better maintained.
Furthermore, the value range of the first rotating speed S1 of the fan is that S1 is more than or equal to 1200rpm and less than or equal to 1500rpm, and the value range of the second rotating speed S2 of the fan is that S2 is more than or equal to 1600rpm and less than or equal to 1900 rpm.
Furthermore, the value range of the time ta is 0h < ta ≦ 10 h.
S03: and (3) conventional refrigeration preservation process: the compressors are all operated at a first speed M1 and the condenser fans are all operated at a fan first speed S1. The controller controls the instant freezing chamber to be within the conventional refrigeration preservation temperature range according to the preset temperature Tc.
Further, the value range of the preset temperature Tc in the conventional refrigeration storage stage is that Tc is more than or equal to minus 7 ℃ and less than 0 ℃.
Further, the method for controlling the instant freezing chamber within the conventional refrigeration preservation temperature range according to the preset temperature Tc by the conventional preservation phase chamber comprises the following steps: when the temperature of the instant freezing chamber reaches a first starting temperature point TONc, opening an air door of the instant freezing chamber; when the temperature of the instant freezing chamber reaches a first shutdown temperature point TOFFc, closing the air door of the instant freezing chamber; t isONc＝Tc+TB1/2,TOFFc＝TONc–TB2/2；TB1Indicating the floating temperature of a starting point of an instant freezing chamber in the starting process of the compressor; t isB2The temperature difference between the start and stop of the instant freezing chamber.
The method has the beneficial effect that the shelf life of the food in the supercooling process can be prolonged in the conventional refrigeration preservation. The opening and closing of the air door of the instant freezing chamber are controlled by judging the temperature of the instant freezing chamber, so that the functions of controlling the instant freezing chamber according to the preset temperature Tc and reducing energy consumption can be realized simultaneously, and the economic efficiency of the instant freezing chamber control method is improved.
As shown in fig. 8, fig. 8 is a graph of the temperature of the food stored in the instant freezing chamber as a function of time during the whole supercooling process according to the embodiment of the present invention. And (3) rapidly cooling the instant freezing chamber in the temperature range above zero in the S01A stage. The temperature of the food starts to be ready to enter the supercooled state at the low temperature region T1 slightly higher than zero. The stage S01B is a stage of supercooling, in which the temperature of the food is slowly reduced under the control of the cooling of the instant freezing chamber, the temperature of the food is lower than the freezing point of the food and is not frozen, and the food is successfully in a supercooled state. The supercooling release process of S02 in this embodiment increases the rotational speed of the condenser fan to increase the amount of cooling supplied to the flash chamber during the supercooling release process, thereby releasing the supercooled state from the temperature of the food. When the food is in the supercooling state, the food undergoes an instant freezing process, namely the temperature of the food is rapidly increased from the temperature lower than the freezing point in the supercooling state to the freezing point temperature, and the temperature of the food is maintained at the freezing point temperature for a period of time in the freezing process until the food is completely frozen. The instant freezing chamber is controlled at a preset temperature Tc during the regular refrigerated preservation at S03 such that the temperature of the food is lowered from the freezing point temperature to the Tc temperature, and the temperature of the food is maintained at substantially the Tc temperature during the subsequent regular refrigerated preservation.
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 (15)
1. A refrigerator characterized in that:
the instant freezing chamber, a cooling device for providing cold energy for the instant freezing chamber and a control system for controlling the cooling device to carry out instant freezing preservation on the instant freezing chamber are arranged;
the instant freezing preservation process of the cooled object in the instant freezing chamber is realized by implementing cooling control on the instant freezing chamber;
the cooling device comprises a compressor, an evaporator, a condenser and a capillary tube;
a condenser fan is arranged on the condenser;
the control system comprises a controller, a timer and a temperature sensor;
the instant freezing preservation comprises a multi-stage supercooling and cooling process, a supercooling relieving process and a conventional refrigeration preservation process;
the control system carries out staged cooling on the cooled object according to the preset operation target temperature and the preset operation duration of each multi-stage supercooling cooling process; and in the multi-stage supercooling and cooling process, after the multi-stage supercooling and cooling process is completed within a preset time period, the rotating speed of the compressor is increased, the rotating speed of the condenser fan is controlled to be increased, the increased rotating speed of the compressor and the increased rotating speed of the condenser fan are kept for a time ta, and supercooling is removed.
2. A method for controlling an instant freezing chamber, which performs instant freezing preservation on the instant freezing chamber by controlling a cooling device, is characterized in that:
the instant freezing preservation process of the cooled object in the instant freezing chamber is realized by implementing cooling control on the instant freezing chamber;
the instant freezing preservation process with a multi-stage supercooling and cooling process, a supercooling relieving process and a conventional refrigeration preservation process is carried out on the cooled object in the instant freezing chamber through a cooling device;
the multi-stage supercooling and cooling process comprises n cooling stages, wherein each cooling stage of the n cooling stages is provided with a preset operation target temperature and a preset operation duration; the multi-stage supercooling and cooling process carries out staged cooling on the cooled object according to a preset running target temperature and a preset running time;
and in the final stage of the multi-stage supercooling and cooling process, after the preset stage cooling is finished within a preset time period: controlling the rotation speed of the compressor to increase from the first rotation speed M1 to the second rotation speed M2, and simultaneously controlling the rotation speed of the fan of the condenser to increase from the first rotation speed S1 of the fan to the second rotation speed S2 of the fan; and the compressor rotating speed maintaining second rotating speed M2 and the condenser fan rotating speed maintaining fan second rotating speed S2 jointly run for preset ta time, and supercooling is removed.
3. The instant freezer control method of claim 2, wherein: the value range of the preset operation ta time is that ta is more than 0h and less than or equal to 10 h.
4. The instant freezer control method of claim 3, wherein: in the 1 st stage of the multi-stage supercooling and cooling process, the rotating speed of the compressor runs at a second rotating speed M2, and after the 1 st stage of the multi-stage supercooling and cooling process is finished, the compressor runs at a first rotating speed M1 in the subsequent multi-stage supercooling and cooling process; in the final stage of the multi-stage supercooling and cooling process, after the preset cooling is finished in the preset time period, the rotating speed of the compressor is controlled to be increased to the second rotating speed M2, and the rotating speed of the fan of the condenser is controlled to be increased to the second rotating speed S2 of the fan, so that the cooling capacity of the instant freezing chamber reaches the maximum value.
5. The instant freezer control method of claim 4, wherein: and the n cooling stages are at least at the last cooling stage, and are stabilized at the preset target temperature for a period of time after reaching the cooling target until the preset time of the cooling process is finished.
6. The instant freezer control method of claim 5, wherein: n cooling stages exist in the cooling process, the n cooling stages are divided into stages 1, … … i and … … n, wherein the cooling stage i represents any one of the n cooling stages, i is more than or equal to 1 and less than or equal to n, n is a natural number and is more than or equal to 2, the air supply device is controlled to start and stop according to the preset temperature of the cooling stage, namely T is used for controlling the air supply device to start and stopONi＝Ti+TB1The temperature T is used as the starting temperature point of the air supply device in the ith stageoffi＝TONi-TB2[ ii ] 2 as the shutdown temperature point of the blower in the i-th stage, TB1Indicates the floating temperature T of the starting point of the instantaneous freezing chamber in the starting process of the compressorB2Temperature difference between instant freezing chamber start and stop, TONi>Ti>Toffi；
In the i-th stage:
when the storage temperature of the instant freezing chamber reaches TONi＝Ti+TB1When the pressure exceeds 2, the air supply device is controlled to work;
when the storage temperature of the instant freezing chamber reaches Toffi＝TONi-TB2And when the pressure exceeds 2, controlling the air supply device not to work.
7. The instant freezer control method of claim 6, wherein: the air supply device is a cold air supply door for implementing cold supply control of the instant freezing chamber.
8. The instant freezer control method of claim 7, wherein: the value range of the time ti for cooling control on the cooled object in the ith stage in the multi-stage supercooling and cooling process is 0h < ti is less than or equal to 8 h.
9. The instant freezer control method of claim 8, wherein: the preset target temperature in the supercooling cooling stage meets the following requirements: t1 is more than or equal to 0 ℃ at the temperature of 5 ℃; tn is more than or equal to-15 ℃, T2 is more than or equal to 0 ℃, i is more than or equal to 2 and less than or equal to n.
10. The instant freezer control method of claim 9, wherein: in the conventional refrigeration storage process, the cooled object is operated according to the preset temperature Tc, wherein Tc is more than or equal to minus 7 ℃ and less than 0 ℃.
11. The instant freezer control method of claim 10, wherein: the control method for the conventional storage process to operate according to the preset temperature Tc comprises the following steps: when the temperature of the instant freezing chamber (12) reaches the starting temperature point TONc, opening an air door of the instant freezing chamber (12); when the temperature of the instant freezing chamber reaches a first shutdown temperature point TOFFc, closing the air door of the instant freezing chamber; t isONc＝Tc+TB1/2,TOFFc＝TONc–TB2/2；TB1Indicating the floating temperature of a starting point of an instant freezing chamber in the starting process of the compressor; t isB2The temperature difference between the start and stop of the instant freezing chamber.
12. The instant freezer control method of claim 11, wherein: t isB1The value range of (A) is 0 DEG C<TB1≤2℃，TB2The value range of (A) is 0 DEG C<TB2≤2℃。
13. A method of controlling an instant freezer as claimed in any one of claims 2 to 12 wherein: in the multi-stage supercooling and cooling process, the condenser fan is operated at the first fan rotating speed S1 in the process of performing the staged cooling on the cooled object.
14. The instant freezer control method of claim 13, wherein: the conventional conservation process compressor is operated at a first speed M1 and the condenser fan speed is operated at a fan first speed S1.
15. A refrigerator, characterized in that: the refrigerator comprises an instant freezing chamber (12), and the instant freezing chamber (12) adopts the instant freezing chamber control method of any one of claims 2 to 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911046589.8A CN110701861A (en) | 2019-10-30 | 2019-10-30 | Instant freezing chamber control method and refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911046589.8A CN110701861A (en) | 2019-10-30 | 2019-10-30 | Instant freezing chamber control method and refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110701861A true CN110701861A (en) | 2020-01-17 |
Family
ID=69202825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911046589.8A Pending CN110701861A (en) | 2019-10-30 | 2019-10-30 | Instant freezing chamber control method and refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110701861A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101375120A (en) * | 2006-02-15 | 2009-02-25 | Lg电子株式会社 | Apparatus for supercooling, and method of operating the same |
| 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 |
| CN106016957A (en) * | 2016-06-29 | 2016-10-12 | 合肥美的电冰箱有限公司 | Refrigerator control method and device |
| CN106091538A (en) * | 2016-06-23 | 2016-11-09 | 海信（山东）冰箱有限公司 | There is the control method of the refrigeration system of the refrigerator of quick-freezing function, refrigerator and quick-freezing |
| CN106839581A (en) * | 2015-12-07 | 2017-06-13 | 青岛海尔智能技术研发有限公司 | Refrigerating device and its freezing method |
| CN107631548A (en) * | 2017-10-20 | 2018-01-26 | 合肥华凌股份有限公司 | Temperature control, which is realized, does not freeze long fresh method, refrigeration plant and readable storage medium storing program for executing |
| JP2019000010A (en) * | 2017-06-13 | 2019-01-10 | 株式会社Ｍｏｔｏ | Quick cooling device |
| 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 |
-
2019
- 2019-10-30 CN CN201911046589.8A patent/CN110701861A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101375120A (en) * | 2006-02-15 | 2009-02-25 | Lg电子株式会社 | Apparatus for supercooling, and method of operating the same |
| 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 |
| CN106839581A (en) * | 2015-12-07 | 2017-06-13 | 青岛海尔智能技术研发有限公司 | Refrigerating device and its freezing method |
| CN106091538A (en) * | 2016-06-23 | 2016-11-09 | 海信（山东）冰箱有限公司 | There is the control method of the refrigeration system of the refrigerator of quick-freezing function, refrigerator and quick-freezing |
| CN106016957A (en) * | 2016-06-29 | 2016-10-12 | 合肥美的电冰箱有限公司 | Refrigerator control method and device |
| JP2019000010A (en) * | 2017-06-13 | 2019-01-10 | 株式会社Ｍｏｔｏ | Quick cooling device |
| CN107631548A (en) * | 2017-10-20 | 2018-01-26 | 合肥华凌股份有限公司 | Temperature control, which is realized, does not freeze long fresh method, refrigeration plant and readable storage medium storing program for executing |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111156754B (en) | Freezing method of refrigerator compartment and refrigerator using same | |
| CN110906684A (en) | Refrigerating system instant freezing chamber storage control method and refrigerating system | |
| CN110906627A (en) | Instant freezing chamber control method and refrigerator | |
| CN212362552U (en) | Multifunctional storage chamber and refrigerator with same | |
| CN110953797A (en) | Instant freezing storage control method and refrigerator | |
| CN110701861A (en) | Instant freezing chamber control method and refrigerator | |
| CN110953795A (en) | Instant freezing chamber control method and refrigerator | |
| CN110701860A (en) | Instant freezing chamber control method and refrigerator | |
| CN110906616B (en) | Instantaneous freezing control method of refrigeration equipment and refrigeration equipment | |
| CN110953798A (en) | Instant freezing chamber control method and refrigerator | |
| CN110940131A (en) | Instant freezing chamber control method and refrigerator | |
| CN110940132A (en) | Instant freezing control method for refrigeration equipment and refrigeration equipment | |
| CN110701859A (en) | Instant freezing chamber control method and refrigerator | |
| CN110906619A (en) | Instant freezing chamber control method and refrigerator | |
| CN110953799A (en) | Instant freezing chamber control method and refrigerator | |
| CN111141086A (en) | Instant freezing chamber control method and refrigerator | |
| CN110906618A (en) | Instant freezing storage control method and refrigerator | |
| CN110906623A (en) | Instant freezing control method for refrigeration equipment and refrigeration equipment | |
| CN110953794A (en) | Instant freezing control method and refrigerator | |
| CN110906686A (en) | Instant freezing chamber control method and refrigerator | |
| CN110701863A (en) | Instant freezing chamber control method and refrigerator | |
| CN110940133B (en) | Instant freezing control method for refrigeration equipment and refrigeration equipment | |
| CN110953793A (en) | Instant freezing chamber control method and refrigerator | |
| CN110953832A (en) | Refrigerator instant freezing storage control method and refrigerator | |
| CN111336743A (en) | Refrigerator, multifunctional storage chamber of refrigerator and control method of refrigerator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200117 |