CN110906670A - Quick-freezing control method for reducing food freezing damage and quick-freezing refrigerator - Google Patents
Quick-freezing control method for reducing food freezing damage and quick-freezing refrigerator Download PDFInfo
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- CN110906670A CN110906670A CN201910961526.9A CN201910961526A CN110906670A CN 110906670 A CN110906670 A CN 110906670A CN 201910961526 A CN201910961526 A CN 201910961526A CN 110906670 A CN110906670 A CN 110906670A
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- 238000007710 freezing Methods 0.000 title claims abstract description 215
- 230000008014 freezing Effects 0.000 title claims abstract description 112
- 235000013305 food Nutrition 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 46
- 239000013078 crystal Substances 0.000 claims abstract description 36
- 238000001816 cooling Methods 0.000 claims abstract description 35
- 230000008569 process Effects 0.000 claims abstract description 11
- 238000012544 monitoring process Methods 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000009529 body temperature measurement Methods 0.000 claims description 2
- 230000004044 response Effects 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 238000005057 refrigeration Methods 0.000 description 9
- 238000005265 energy consumption Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 235000013611 frozen food Nutrition 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000010257 thawing Methods 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
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
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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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- 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 provides a quick-freezing control method for reducing food freezing damage, which adopts a freezing fan to convey cold air generated by a refrigerating system to cool stored objects, and reduces or stops cooling of a non-quick-freezing area in the quick-freezing process so as to increase cooling of the quick-freezing area; the temperature of the stored object is monitored in real time, when the temperature of the stored object reaches a first preset temperature, the rotating speed of the freezing fan and the rotating speed of a compressor in the refrigerating system are increased to lower the temperature of the stored object to a second preset temperature, wherein the first preset temperature is higher than the maximum value of the temperature interval of the maximum ice crystal generation zone, and the second preset temperature is lower than the minimum value of the temperature interval of the maximum ice crystal generation zone. The invention also provides a quick-freezing refrigerator which is used for reducing food freezing damage and realizing quick freezing and saving more energy.
Description
Technical Field
The invention relates to the field of refrigerators, in particular to a quick-freezing control method for reducing food freezing damage and a quick-freezing 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; for example, CN106123441A mentions a method of quick freezing in a refrigerator having a quick freezing function, but it does not recognize intelligently that the food reaches the temperature of the ice crystal generation zone, resulting in increased energy consumption. CN2527938Y puts the thawing plate that has quick-freeze function in with the refrigerator, so increased the cost, economic practicality is not good.
In summary, the prior art has the following disadvantages:
(1) longer staying in the zone of largest ice crystal generation.
(2) The temperature interval of the maximum ice crystal band cannot be intelligently identified.
(3) The energy consumption is large and leads to a synchronous drop of the temperature of the other compartments.
Therefore, it is required to provide a new quick-freezing control method for reducing the freezing damage of the food and a quick-freezing refrigerator.
Disclosure of Invention
In view of the above, the present invention provides a quick-freezing control method for reducing food freezing damage and a quick-freezing refrigerator, to solve the above problems, specifically:
the invention provides a quick-freezing control method for reducing food freezing damage, which adopts a freezing fan to convey cold air generated by a refrigerating system to cool stored objects,
in the quick-freezing process, the cooling of the non-quick-freezing area is reduced or stopped so as to increase the cooling of the quick-freezing area;
monitoring the temperature of the stored object in real time, increasing the rotating speed of the freezing fan and the rotating speed of a compressor in the refrigerating system to reduce the temperature of the stored object to a second preset temperature when the temperature of the stored object reaches a first preset temperature,
wherein the first preset temperature is higher than the maximum value of the temperature interval of the maximum ice crystal generation zone, and the second preset temperature is lower than the minimum value of the temperature interval of the maximum ice crystal generation zone.
Preferably, the quick-freezing control method further comprises the following steps: when the temperature of the stored object reaches a second preset temperature, the rotating speed of the freezing fan and the rotating speed of the compressor are recovered, the object is frozen for a preset time at a third preset temperature lower than the second preset temperature, the cooling of the non-quick-freezing area is recovered after the freezing is finished, and then the stored object is frozen at a fourth preset temperature between the third preset temperature and the second preset temperature;
during the period from the beginning of quick freezing to the time when the temperature of the stored object is reduced to the second preset temperature, the temperature of the stored object is monitored in real time by adopting an infrared sensor; when the freezing is carried out at the third preset temperature, a timer and an infrared sensor are adopted to record the freezing time and the temperature measurement respectively; and measuring the temperature by adopting an infrared sensor when freezing is carried out at a fourth preset time.
Preferably, also comprises
When the temperature of the stored object reaches a second preset temperature, the rotating speed of the freezing fan and the rotating speed of the compressor are recovered, the quick-freezing area is continuously cooled according to a third preset temperature within a preset time, so that the stored object is frozen,
wherein the third preset temperature is lower than the second preset temperature.
Preferably, also comprises
After the cooling for the preset time is finished, the cooling of the non-quick-freezing area is recovered, and the stored objects are stored at a fourth preset temperature,
wherein the fourth preset temperature is higher than the third preset temperature, and the fourth temperature is lower than the second preset temperature.
Preferably, the temperature interval of the maximum ice crystal generation zone is-5 ℃ to 0 ℃.
Preferably, the first preset temperature range is 0 ℃ to 1 ℃, and the second preset temperature range is-7 ℃ to-5 ℃.
Preferably, said third preset temperature is lower than-18 ℃.
Preferably, the fourth preset temperature range is-18 ℃ to-16 ℃.
The invention discloses a quick-freezing refrigerator for reducing food freezing damage in a second aspect, which comprises a refrigerator body
And the control unit adopts any quick-freezing control method.
The invention discloses a quick-freezing refrigerator for reducing food freezing damage in a third aspect, which comprises a refrigerator body
The refrigerating system is used for responding to the control of the control unit and supplying cold to the quick-freezing chamber and the non-quick-freezing chamber of the refrigerator;
a freezing fan for delivering cold air generated by the refrigerating system to the compartment of the refrigerator in response to the control of the control unit;
the temperature monitoring unit is used for monitoring the temperature of the stored object in real time and sending the monitored data to the control unit;
the control unit is used for controlling the refrigerating system to quickly freeze the stored object in the freezing area of the refrigerator, wherein before the temperature of the stored object reaches the maximum ice crystal generation zone temperature interval, the air door of the compartment of the refrigerator is controlled to increase the cooling capacity of the quick-freezing compartment of the refrigerator; when the temperature of the stored object is in the temperature range of the maximum ice crystal generation zone, the compressor power of the refrigerating system is increased to increase the cooling capacity of the quick-freezing chamber of the refrigerator.
Preferably, the quick freezing of the stored substance in the freezing area of the refrigerator adopts multi-stage freezing,
wherein the multi-stage freezing comprises:
the first stage is as follows: closing or closing an air door of the non-freezing speed chamber of the refrigerator to increase the cooling of the quick-freezing chamber;
and a second stage: when the temperature of the stored object reaches a first preset temperature, increasing the rotating speed of the freezing fan and the rotating speed of a compressor in the refrigerating system to reduce the temperature of the stored object to a second preset temperature;
and a third stage: respectively recovering the rotating speed of the freezing fan and the rotating speed of the compressor, and continuously supplying cold to the quick-freezing area according to a third preset temperature within preset time;
a fourth stage: and opening or opening the air door of the non-quick-freezing chamber of the refrigerator to restore the cooling of the non-quick-freezing chamber, and storing the stored objects at a fourth preset temperature.
Preferably, the refrigeration system includes a compressor for adjusting a compression power according to a compressor rotation speed command of the control unit to reduce a time during which a temperature of the stored object is in a maximum ice crystal generation zone temperature interval.
The invention can realize intelligent identification of the maximum ice crystal generation zone, and the method for increasing the rotating speed of the compressor and the rotating speed of the refrigerating fan by closing or closing the refrigeration of other compartments by utilizing the control method in the technical scheme of the invention realizes the rapid passing of the maximum ice crystal generation zone, thereby ensuring that a large amount of cold energy rapidly passes through the maximum ice crystal generation zone. Compared with the method in the prior art, the control method is more energy-saving, economical and practical, and has small ice crystal volume and small freezing damage to frozen meat. In addition, the quick-freezing refrigerator disclosed by the invention also has the advantages.
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 flow chart of a control method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a control part of the quick-freezing refrigerator according to an embodiment of the invention;
FIG. 3 is a schematic view of a refrigeration system for a refrigerator in accordance with an embodiment of the present invention;
fig. 4 is a flow diagram of a refrigeration system according to an embodiment of the present invention.
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 invention provides a control method for quickly storing food to be stored in a freezing way, which can reduce the damage of the food caused by the generation of ice crystals during freezing, when a user selects a quick-freezing function, other compartments stop refrigerating or reduce the cooling capacity of other compartments, and a freezing fan conveys cold air generated by a refrigerating system to refrigerate the stored object in a cooling system to generate all or most of the cold energy for a quick-freezing functional area. The method can also intelligently identify the temperature interval of the maximum ice crystal generation zone, when the temperature interval is passed, the temperature of the stored object can quickly pass through the maximum ice crystal generation zone by increasing the rotating speed of the compressor and the rotating speed of the freezing fan, so that the energy consumption generated in the whole storage process is low, when the foods in the quick-freezing functional zone are completely frozen, the foods are operated at the more economical and safe temperature, and the foods are kept fresh for a long time.
For further illustration, the invention provides the following examples.
Example 1
As shown in fig. 1, in this embodiment, a quick-freezing control method for reducing food freezing damage is disclosed, which uses a freezing fan to deliver cold air generated by a refrigeration system to cool stored objects, wherein in the quick-freezing process, in order to increase the cooling of the quick-freezing area, the cooling of the non-quick-freezing area is first reduced or stopped; the temperature of the stored object is monitored in real time, and when the temperature of the stored object reaches a first preset temperature, the rotating speed of a freezing fan and a compressor in a refrigerating system is increased to reduce the temperature of the stored object to a second preset temperature. In the process, the set first preset temperature is higher than the maximum value of the maximum ice crystal generation zone temperature interval, and the second preset temperature is lower than the minimum value of the maximum ice crystal generation zone temperature interval. The stored object is identified by the temperature in the quick-freezing process, and the rotating speeds of the compressor and the freezing fan are timely and respectively increased, so that the purposes of economy and energy conservation are achieved. Preferably, the maximum speed is adjusted when the speed of the compressor and the speed of the refrigerating fan are increased.
In addition, in other preferred schemes, a measure of increasing the power of other components in the refrigerating system, such as increasing the rotating speed of a fan of a condenser and the like, which can increase the cooling capacity supplied to the quick-freezing area can be adopted.
The maximum ice crystal generation zones for different foods may be slightly different, and the first preset temperature and the second preset temperature may be set individually according to the maximum ice crystal generation zones for different foods, or may be set uniformly according to the maximum ice crystal generation zone common to most foods.
In order to ensure that the food is completely frozen, when the temperature of the stored object reaches a second preset temperature, the rotating speeds of the freezing fan and the compressor are respectively restored, and the object is frozen for a preset time at a third preset temperature lower than the second preset temperature; and after freezing for a preset time is finished, cooling the non-quick-freezing area, and freezing the stored object for a long time at a fourth preset temperature between the third preset temperature and the second preset temperature. During the period from the beginning of quick freezing to the time when the temperature of the stored object is reduced to the second preset temperature, the temperature of the stored object is monitored in real time by adopting an infrared sensor; when the frozen object is frozen at a third preset temperature, a timer and an infrared sensor are adopted to respectively record the freezing time and the temperature of the stored object; and when the freezing is carried out at the fourth preset time, only the infrared sensor is adopted for measuring the temperature.
The food is wholly cooled and frozen in multiple stages. Accomplish in a short time and accomplish freezing to food, guarantee the fresh degree of food, reduce the damage to food, it is more energy-conserving and high-efficient to compare in current mode.
Or, in other embodiments of this embodiment, the control method is also performed step by step according to actual needs, for example, after the quick-freezing function is started, and the cooling of the non-quick-freezing compartments is turned off or turned off, when the temperature of the stored object reaches the first preset temperature, the rotation speed of the freezing fan and the rotation speed of the compressor in the refrigeration system are respectively increased to reduce the temperature of the stored object to the second preset temperature. And when the temperature of the stored object reaches a second preset temperature, respectively recovering the rotating speeds of the freezing fan and the compressor, and continuously cooling the quick-freezing area according to a third preset temperature within a preset time so as to freeze the stored object, wherein the third preset temperature is lower than the second preset temperature. The process is now complete for the complete freeze and can be stored in this state for a long time (i.e., the preset time can be infinite or some other finite time).
When a more energy-saving mode is selected according to the requirements of users, the method further comprises the steps of recovering the cooling of the non-quick-freezing area after the cooling within the preset time is completed, and storing the stored objects at a fourth preset temperature, wherein the fourth preset temperature is higher than the third preset temperature, and the fourth temperature is lower than the second preset temperature.
In each of the above embodiments, the general maximum ice crystal formation temperature zone is taken as a limit, preferably the maximum ice crystal formation temperature zone is-5 ℃ to 0 ℃, and-5 ℃ and 0 ℃ may not be included. Correspondingly, the selection range of the first preset temperature can be between 0 and 1 ℃, and the selection range of the second preset temperature can be between-7 and-5 ℃. The third predetermined temperature is a further complete freezing of the food product, so that the temperature can be selected to be below-18 ℃; in this case, the fourth predetermined temperature range is preferably from-18 ℃ to-16 ℃.
Example 2
The invention also discloses a quick-freezing refrigerator which comprises a control unit. The control unit adopts any quick-freezing control method as described above.
Example 3
As shown in fig. 2 to 4, in the present embodiment, the present invention discloses a quick-freezing refrigerator for reducing food freezing damage, which includes a refrigeration system, a freezing fan, a temperature measuring unit and a control unit. The refrigerating system responds to the control of the control unit and supplies cold to the quick-freezing chamber and the non-quick-freezing chamber of the refrigerator; the refrigerating fan can respond to the control of the control unit to convey cold air generated by the refrigerating system to the compartment of the refrigerator; the temperature monitoring unit monitors the temperature of the stored object in real time and sends the monitored data to the control unit; the control unit controls the refrigerating system to quickly freeze the stored objects in the freezing area of the refrigerator.
Before receiving the instruction stored in the quick-freezing mode and the temperature of the stored object reaches the maximum ice crystal generation zone temperature interval, controlling an air door of a compartment of the refrigerator to increase cooling capacity for the quick-freezing compartment of the refrigerator; when the temperature of the stored object is in the temperature interval of the maximum ice crystal generation zone, the compressor power and the freezing fan power of the refrigerating system are increased to increase the cooling capacity of the quick-freezing chamber of the refrigerator.
In this embodiment, the multi-stage freezing is used for quick freezing of the stored material in the freezing zone of the refrigerator, and the multi-stage freezing comprises a first stage: closing or closing an air door of a non-quick-freezing chamber of the refrigerator to increase the cooling capacity of the quick-freezing chamber; and a second stage: when the temperature of the stored object reaches a first preset temperature, respectively increasing the rotating speed of a freezing fan and the rotating speed of a compressor in a refrigerating system to reduce the temperature of the stored object to a second preset temperature; and a third stage: respectively recovering the rotating speeds of the freezing fan and the compressor, and continuously supplying cold to the quick-freezing area according to a third preset temperature within a preset time; a fourth stage: and opening or opening the air door of the non-quick-freezing chamber of the refrigerator to restore the cooling of the non-quick-freezing chamber, and storing the stored objects at a fourth preset temperature. The temperature of the food is monitored in real time, and the compressor and the freezing fan are timely adjusted, so that the time that the stored object is in the temperature interval of the maximum ice crystal generation zone is greatly reduced when the temperature is reduced, and the energy consumption is reduced.
The refrigerating system comprises a compressor, and the compressor is used for adjusting the compression power according to a compressor rotating speed instruction of a control unit so as to reduce the time that the temperature of the stored object is in the maximum ice crystal generation zone temperature interval.
The refrigerators in embodiment 2 and embodiment 3 described above further specifically include a temperature adjusting device, a timer, and the like. The frequency conversion plate is connected with the compressor to perform frequency conversion adjustment on the compressor. A temperature monitoring unit arranged in the refrigerator senses the temperature of food in a quick-freezing area, an infrared sensor senses the temperature of the surface of the food in the quick-freezing area, and a condenser fan is matched with a freezing fan to blow cold energy of a condenser into a compartment. The timer records the time length of working at the preset temperature in the preset time. The quick-freezing refrigerator in the invention can be a special refrigerator which only has the function of realizing single quick-freezing, and also can be a multifunctional quick-freezing refrigerator which is combined with other freezing modes, and the other freezing modes can be the freezing modes of the common refrigerator.
For further explanation, the invention also discloses a specific working process of the refrigerator.
The freezing control method of the refrigerator comprises the following steps:
when a user selects the quick-freezing function on a display, the method comprises the following steps:
step one, closing the refrigeration requests of other areas except the quick-freezing area by a control unit, and controlling the fan rotating speed of the condenser to operate at S1 by the control unit; compressor speed at M1; capillary flow at V1; the freezing fan speed is P1; and the infrared sensor instantly acquires the temperature of the surface of the food in the quick-freezing functional area. And when the temperature collected by the infrared sensor is T1, executing a step two, wherein the temperature is more than or equal to 0 ℃ and less than or equal to T1 and less than or equal to 1 ℃.
Step two, the control unit controls the compressor to accelerate, and preferably operates at the maximum rotating speed M2; condenser fan speed at S1; capillary flow at V1; the freezing fan speed is P2; and the infrared sensor collects the temperature of the surface of the food in the quick-freezing functional area in real time. When the temperature of the surface of the food collected by the infrared sensor is T2, executing a step three, wherein the temperature is between 7 ℃ below zero and T2 ℃ below zero and 5 ℃ below zero.
Step three, the control unit controls the compressor to operate at a rotating speed M1; the condenser fan is operated at S1; capillary flow at V1; the freezing fan speed is P1; and (3) cooling the quick-freezing area according to a preset temperature T3, and detecting the real-time temperature of the quick-freezing area immediately through an infrared sensor. Within a preset time T of reducing the temperature at T3, when the temperature of the quick-freezing chamber reaches a first starting temperature point TON1When the air door is opened, the air door of the quick freezing chamber is opened; when the temperature of the quick-freezing chamber reaches a first shutdown temperature point TOFF1When the temperature is higher than the set temperature, closing an air door of the quick freezing chamber; the timer counts time in the process, and when the timing time reaches T, the step four, T, is executedON1＝T3+TB1/2,TOFF1＝TON1–TB2/2；TB1And TB2For a known parameter, TB1Indicating the floating temperature of a starting point of a middle-speed freezing chamber in the starting process of the compressor; t isB2The temperature difference between the start and the stop of the quick-freezing chamber is indicated, and T3 is a preset temperature value; t at 0 DEG CB1,TB2≤2℃，0h＜t≤24h,-40℃≤T3＜-18℃。
Fourthly, when the other compartments recover normal refrigeration requests, the control unit controls the fan of the condenser to operate at the rotating speed of S1, the rotating speed of the compressor is M1, the flow rate of the capillary tube is V1, and the rotating speed of the refrigerating fan is P1, so that the quick-freezing compartment is cooled according to the preset temperature T4, the real-time temperature of the quick-freezing compartment is detected through the infrared sensor, and when the temperature of the quick-freezing compartment reaches the first starting temperature point TON2When the air door is opened, the air door of the quick freezing chamber is opened; when the temperature of the quick-freezing chamber reaches a first shutdown temperature point TOFF2When the temperature is higher than the set temperature, closing an air door of the quick freezing chamber;
TON2＝T4+TB1/2,TOFF2＝TON2–TB2/2；0℃＜TB1,TB2≤2,-18℃≤T4≤-16℃。
the parameters are preferably selected for the operation of each device in the above operation as follows:
| condenser fan | Capillary flow | Speed of compressor | Rotational speed of refrigerating fan | |
| Step one | S1 | V1 | M1 | P1 |
| Step two | S1 | V1 | M2 | P2 |
| Step three | S1 | V1 | M1 | P1 |
| Step four | S1 | V1 | M1 | P1 |
Wherein V1 is more than or equal to 4.5L/min and less than or equal to 5L/min, and V2 is more than or equal to 2L/min and less than or equal to 3L/min; s1 is more than or equal to 1200rpm and less than or equal to 1500rpm, S2 is more than or equal to 1600rpm and less than or equal to 1900 rpm; m1 is more than or equal to 1200rpm and less than or equal to 1400rpm, M2 is more than or equal to 3800rpm and less than or equal to 4500 rpm; p1 is more than or equal to 1200rpm and less than or equal to 1500rpm, and P2 is more than or equal to 1600rpm and less than or equal to 1900 rpm.
It should be noted that the operating parameter ranges such as the flow rate of the capillary tube, the rotation speeds of the compressor, the freezing fan and the condenser fan in the present embodiment are also applicable to the control method in embodiment 1, that is, the quick-action control method in embodiment 1 is further optimized, and the above-mentioned operating parameters and room temperature maintaining method are adopted.
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 (12)
1. A quick-freezing control method for reducing food freezing damage adopts a freezing fan to convey cold air generated by a refrigerating system to cool stored objects, and is characterized in that,
in the quick-freezing process, the cooling of the non-quick-freezing area is reduced or stopped so as to increase the cooling of the quick-freezing area;
monitoring the temperature of the stored object in real time, increasing the rotating speed of the freezing fan and the rotating speed of a compressor in the refrigerating system to reduce the temperature of the stored object to a second preset temperature when the temperature of the stored object reaches a first preset temperature,
wherein the first preset temperature is higher than the maximum value of the temperature interval of the maximum ice crystal generation zone, and the second preset temperature is lower than the minimum value of the temperature interval of the maximum ice crystal generation zone.
2. The quick-freezing control method for reducing the freezing damage of the food according to claim 1, further comprising: when the temperature of the stored object reaches a second preset temperature, the rotating speed of the freezing fan and the rotating speed of the compressor are recovered, the object is frozen for a preset time at a third preset temperature lower than the second preset temperature, the cooling of the non-quick-freezing area is recovered after the freezing is finished, and then the stored object is frozen at a fourth preset temperature between the third preset temperature and the second preset temperature;
during the period from the beginning of quick freezing to the time when the temperature of the stored object is reduced to the second preset temperature, the temperature of the stored object is monitored in real time by adopting an infrared sensor; when the freezing is carried out at the third preset temperature, a timer and an infrared sensor are adopted to record the freezing time and the temperature measurement respectively; and measuring the temperature by adopting an infrared sensor when freezing is carried out at a fourth preset time.
3. The quick-freeze control method for reducing food freezing damage according to claim 1, characterized by further comprising
When the temperature of the stored object reaches a second preset temperature, the rotating speed of the freezing fan and the rotating speed of the compressor are recovered, the quick-freezing area is continuously cooled according to a third preset temperature within a preset time, so that the stored object is frozen,
wherein the third preset temperature is lower than the second preset temperature.
4. The quick-freeze control method for reducing food freezing damage according to claim 3, characterized by further comprising
After the cooling for the preset time is finished, the cooling of the non-quick-freezing area is recovered, and the stored objects are stored at a fourth preset temperature,
wherein the fourth preset temperature is higher than the third preset temperature, and the fourth temperature is lower than the second preset temperature.
5. The quick-freezing control method for reducing the freezing damage of the food as claimed in claim 4, wherein the temperature range of the maximum ice crystal generation zone is-5 ℃ to 0 ℃.
6. The quick-freezing control method for reducing the freezing damage of the food according to claim 5, wherein the first preset temperature range is 0 ℃ to 1 ℃, and the second preset temperature range is-7 ℃ to-5 ℃.
7. The quick-freeze control method for reducing food freezing damage according to claim 6, wherein the third preset temperature is lower than-18 ℃.
8. The quick-freeze control method for reducing the freezing damage of the food according to claim 7, wherein the fourth preset temperature range is-18 ℃ to-16 ℃.
9. A quick-freezing refrigerator for reducing food freezing damage is characterized in that the refrigerator comprises
A control unit, which adopts the quick-freezing control method as claimed in any one of claims 1-8.
10. A quick-freezing refrigerator for reducing food freezing damage is characterized in that the refrigerator comprises
The refrigerating system is used for responding to the control of the control unit and supplying cold to the quick-freezing chamber and the non-quick-freezing chamber of the refrigerator;
a freezing fan for delivering cold air generated by the refrigerating system to the compartment of the refrigerator in response to the control of the control unit;
the temperature monitoring unit is used for monitoring the temperature of the stored object in real time and sending the monitored data to the control unit;
the control unit is used for controlling the refrigerating system to quickly freeze the stored object in the freezing area of the refrigerator, wherein before the temperature of the stored object reaches the maximum ice crystal generation zone temperature interval, the air door of the compartment of the refrigerator is controlled to increase the cooling capacity of the quick-freezing compartment of the refrigerator; when the temperature of the stored object is in the temperature interval of the maximum ice crystal generation zone, the compressor power and the freezing fan power of the refrigerating system are increased to increase the cooling capacity of the quick-freezing chamber of the refrigerator.
11. The quick-frozen refrigerator for reducing food freezing damage according to claim 10, wherein the quick-freezing of the stored substance in the freezing area of the refrigerator is performed by multi-stage freezing,
wherein the multi-stage freezing comprises:
the first stage is as follows: closing or closing an air door of the non-freezing speed chamber of the refrigerator to increase the cooling of the quick-freezing chamber;
and a second stage: when the temperature of the stored object reaches a first preset temperature, increasing the rotating speed of the freezing fan and the rotating speed of a compressor in the refrigerating system to reduce the temperature of the stored object to a second preset temperature;
and a third stage: respectively recovering the rotating speed of the freezing fan and the rotating speed of the compressor, and continuously supplying cold to the quick-freezing area according to a third preset temperature within preset time;
a fourth stage: and opening or opening the air door of the non-quick-freezing chamber of the refrigerator to restore the cooling of the non-quick-freezing chamber, and storing the stored objects at a fourth preset temperature.
12. The quick-frozen refrigerator for reducing food freezing damage according to claim 10 or 11, wherein the refrigerating system comprises a compressor for adjusting a compression power according to a compressor rotation speed command of the control unit to reduce a time during which the temperature of the stored object is in a maximum ice crystal generation zone temperature interval.
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| CN201910961526.9A CN110906670A (en) | 2019-10-11 | 2019-10-11 | Quick-freezing control method for reducing food freezing damage and quick-freezing refrigerator |
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| CN112205563A (en) * | 2020-09-28 | 2021-01-12 | 中国科学院广州能源研究所 | Super-ice-temperature quick-frozen food fresh-keeping method |
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