CN110953821A - Control method for instant freezing storage of refrigerator and refrigerator - Google Patents

Control method for instant freezing storage of refrigerator and refrigerator Download PDF

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Publication number
CN110953821A
CN110953821A CN201911046375.0A CN201911046375A CN110953821A CN 110953821 A CN110953821 A CN 110953821A CN 201911046375 A CN201911046375 A CN 201911046375A CN 110953821 A CN110953821 A CN 110953821A
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CN
China
Prior art keywords
temperature
preset
supercooling
period
compressor
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Pending
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CN201911046375.0A
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Chinese (zh)
Inventor
钱梅双
汪猗吉
辛海亚
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Gree Electric Appliances Inc of Zhuhai
Hefei Jing Hong Electrical Co Ltd
Original Assignee
Gree Electric Appliances Inc of Zhuhai
Hefei Jing Hong Electrical Co Ltd
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Application filed by Gree Electric Appliances Inc of Zhuhai, Hefei Jing Hong Electrical Co Ltd filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN201911046375.0A priority Critical patent/CN110953821A/en
Publication of CN110953821A publication Critical patent/CN110953821A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/30—Quick freezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/36—Visual displays
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2600/00—Control issues
    • F25D2600/02—Timing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2600/00—Control issues
    • F25D2600/06—Controlling according to a predetermined profile

Abstract

The invention discloses a control method for instant freezing storage of a refrigerator, which comprises a supercooling preparation period for storing stored objects by adopting a supercooling storage mode: the method comprises the steps of firstly increasing the rotating speed of a compressor in a refrigeration system, storing stored objects at a preset preparation temperature, and entering a supercooling cooling period when the temperature of the stored objects reaches the preset preparation temperature; and (3) supercooling and cooling period: recovering the rotating speed of the compressor, and performing a multi-stage cooling process on the stored object by using a preset temperature gradient; supercooling release period: applying external force to the stored object within a preset relieving time to oscillate and improving the rotating speed of a condenser fan and the rotating speed of a compressor in a refrigerating system so as to relieve supercooling; and (3) in a conventional refrigeration period: stopping oscillation, recovering the rotation speed of the condenser fan and the rotation speed of the compressor, and storing the stored substance in a conventional storage mode. In addition, the invention also provides a refrigerator with instant freezing storage function.

Description

Control method for instant freezing storage of refrigerator and refrigerator
Technical Field
The invention relates to the field of refrigerators, in particular to a control method for instant freezing storage of a refrigerator and the 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. There are also some techniques proposed to release supercooling by increasing the wind speed or the air volume in a supercooling preservation method such as CN20070052223.0 "refrigerator and freezing preservation method".
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 poor only by increasing the wind speed or the wind volume;
(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 control method for instant freeze storage of a refrigerator and a refrigerator, to solve the above problems, and specifically:
the invention discloses a control method for instant freezing storage of a refrigerator, which is characterized in that cold air generated by a refrigerating system is adjusted to supply cold to a stored object in response to a received instant freezing storage instruction, and the storage of the stored object by adopting an overcooling storage mode comprises the following steps
A supercooling preparation period: firstly, increasing the rotating speed of a compressor in a refrigeration system, storing a stored object at a preset preparation temperature, and entering a supercooling cooling period when the temperature of the stored object reaches the preset preparation temperature, wherein the preset preparation temperature is in a range of 0-5 ℃ and does not include 0 ℃;
and (3) supercooling and cooling period: the rotating speed of the compressor is recovered, the stored object is subjected to a multi-stage cooling process by a preset temperature gradient,
the multi-stage cooling process comprises an m stage, and an nth preset cooling time is operated at an nth preset cooling temperature in an nth stage, wherein the nth preset cooling temperature is lower than an nth-1 preset cooling temperature, the nth preset cooling temperature is lower than the preset preparation temperature, m is a positive integer greater than or equal to 2, and n is a positive integer less than or equal to m;
supercooling release period: after the multi-stage cooling process is finished, applying external force to the stored object within preset removing time to oscillate and improving the rotating speed of a condenser fan and the rotating speed of a compressor in the refrigerating system so as to remove supercooling;
and (3) in a conventional refrigeration period: after the supercooling release period is finished, stopping oscillation, recovering the rotating speed of the condenser fan and the rotating speed of the compressor, and storing the stored object in a conventional storage mode.
Preferably, the rotation speed S1 of the condenser fan before the speed raising meets 1200rpm which is less than or equal to S1 which is less than or equal to 1500rpm, and the rotation speed S2 after the speed raising meets 1600rpm which is less than or equal to S2 which is less than or equal to 1900 rpm; the rotation speed M1 of the compressor before the speed rise is more than or equal to 1200rpm and less than or equal to M1 and less than or equal to 1400rpm, and the rotation speed M2 after the speed rise is more than or equal to 3800rpm and less than or equal to M2 and less than or equal to 4500 rpm.
Preferably, the nth preset cooling time ranges from 0h to 1 h.
Preferably, the set time length of the supercooling preparation period is not more than 10h, and the supercooling cooling period is entered after the set time length is reached.
Preferably, the temperature interval of the multi-stage cooling process is-6 ℃ to 0 ℃ and does not include 0 ℃.
Preferably, the temperature of the conventional storage manner is-7 ℃ to 0 ℃ and does not include 0 ℃.
Preferably, the nth preset cooling time range is 0 h-1 h; the temperature interval of the multi-stage cooling process is-6-0 ℃ and does not include 0 ℃; the temperature of the conventional storage mode is-7 ℃ to 0 ℃ and does not include 0 ℃.
Preferably, the applying of the external force oscillates: the oscillating device at the drawer of the storage chamber for storing the stored object is opened to apply external force to the stored object in the drawer for oscillation.
The second aspect of the invention discloses a control method for instant freezing storage of a refrigerator, which is characterized in that cold air generated by a refrigerating system is adjusted to supply cold to stored objects in response to a received instant freezing storage instruction, and the storage of the stored objects by adopting an overcooling storage mode comprises the following steps
A supercooling preparation period: firstly, increasing the rotating speed of a compressor in a refrigeration system, storing the stored object at a preset preparation temperature within a preset preparation time, and entering a supercooling cooling period after the preset preparation time is finished, wherein the preset preparation temperature is in a range of 0-5 ℃ and does not include 0 ℃;
and (3) supercooling and cooling period: the rotating speed of the compressor is recovered, the stored object is subjected to a multi-stage cooling process by a preset temperature gradient,
the multi-stage cooling process comprises an m stage, and an nth preset cooling time is operated at an nth preset cooling temperature in an nth stage, wherein the nth preset cooling temperature is lower than an nth-1 preset cooling temperature, the nth preset cooling temperature is lower than the preset preparation temperature, m is a positive integer greater than or equal to 2, and n is a positive integer less than or equal to m;
supercooling release period: after the multi-stage cooling process is finished, applying external force to the stored object within preset removing time to oscillate and improving the rotating speed of a condenser fan and the rotating speed of a compressor in the refrigerating system so as to remove supercooling;
and (3) in a conventional refrigeration period: after the supercooling release period is finished, stopping oscillation, recovering the rotating speed of the condenser fan and the rotating speed of the compressor, and storing the stored object in a conventional storage mode.
Preferably, the applying of the external force oscillates: the oscillating device at the drawer of the storage chamber for storing the stored object is opened to apply external force to the stored object in the drawer for oscillation.
A third aspect of the present invention discloses a refrigerator having a flash freezing storage function, the refrigerator including
And the control unit is used for storing by adopting any one of the control methods.
The fourth aspect of the present invention discloses a refrigerator having a flash freezing storage function, the refrigerator comprising
A storage chamber for storing the stored object;
oscillation means for applying an external force to the stored object in response to control by the control unit to perform oscillation;
the refrigeration system is used for supplying cold to the stored object in the storage chamber in response to the control of the control unit, and comprises a condenser fan and a compressor, wherein the condenser fan is used for dissipating the heat of the refrigerant sent by the compressor in response to the control of the control unit, and the compressor is used for changing the speed in response to the control of the control unit so as to adjust the cold supply to the stored object;
the control unit is used for controlling the cold air generated by the refrigerating system to supply cold to the stored object,
wherein during the subcooling preparation period: the control unit controls the refrigerating system to increase the rotating speed of the compressor so as to supply cold to the stored object at a preset preparation temperature; in the supercooling and cooling period: the control unit controls the refrigerating system to recover the rotating speed of the compressor, and performs a multi-stage cooling process on the stored object by using a preset temperature gradient; in the supercooling release period: the control unit controls the oscillation device to oscillate and controls the refrigeration system to increase the rotating speed of the condenser fan and the rotating speed of the compressor within the preset release time; during the normal refrigeration period: the control unit controls the oscillation device to stop oscillating, controls the refrigerating system to recover the rotating speed of the condenser fan and the rotating speed of the compressor, and stores the stored object in a conventional storage mode.
Preferably, the multi-stage cooling process includes an m stage, and the nth preset cooling time is operated at an nth preset cooling temperature in an nth stage, wherein the nth preset cooling temperature is lower than an n-1 th preset cooling temperature, the nth preset cooling temperature is lower than the preset preparation temperature, m is a positive integer greater than or equal to 2, and n is a positive integer less than or equal to m; the nth preset cooling time ranges from 0h to 1 h.
Preferably, the refrigerator further comprises
A temperature monitoring unit for monitoring the temperature of the stored object;
a capillary tube provided in a refrigerant flow path of the refrigeration system for transporting a refrigerant;
the electric switching valve is used for responding to a switching instruction of the control unit and switching the capillary tube to realize throttling control on the refrigerant in the capillary tube;
and the timer is used for recording the cooling time of the nth stage in the multi-stage cooling process.
Preferably, the preset preparation temperature ranges from 0 ℃ to 5 ℃ and does not include 0 ℃; the temperature interval of the multi-stage cooling process is-6-0 ℃ and does not include 0 ℃; the temperature of the conventional storage mode is-7 ℃ to 0 ℃ and does not include 0 ℃.
Preferably, the control unit is further configured to control the refrigeration system to enter the supercooling cooling period after the set duration of the supercooling preparation period is reached, wherein the set duration of the supercooling preparation period does not exceed 10 h.
The invention has the beneficial effects that: (1) the control method can realize the supercooling storage of the meat, reduce the juice loss compared with the traditional freezing technology and keep the nutrition of the frozen meat to the maximum extent. (2) The control method of the invention removes the overcooling state by starting the oscillating device and combining the method of increasing the rotating speed of the condenser fan and the rotating speed of the compressor, avoids the air drying problem of food caused by increasing the air quantity or the air speed, improves the freezing effect and forms more uniform ice crystals. (3) The invention can achieve good cutting effect by controlling the stored meat, and has good user experience.
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 portion of a refrigerator according to an embodiment of the present 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 schematic of a refrigeration system according to an embodiment of the present invention;
fig. 5 is a schematic view of an installation position of the oscillation device 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 existing technology for supercooling preservation has the following disadvantages: the supercooling is released in advance due to uneven temperature reduction in the supercooling process; the supercooling relieving effect is poor only by increasing the wind speed or the wind volume; the supercooling depth is shallow, and the state of supercooling cannot be well entered.
The invention provides a control method capable of realizing instant freezing storage, which divides the storage into a supercooling preparation period, a supercooling cooling period, a supercooling release period and a conventional refrigeration period. Firstly, the refrigeration efficiency is improved in the supercooling preparation period, the temperature of the stored objects is unified and is maintained to be more than 0 ℃ and close to 0 ℃, and the temperature is preferably selected to be within the range of 0-5 ℃ and not including 0 ℃. In the supercooling and cooling period, the initial refrigeration working parameters are firstly restored, for example, if the speed of a compressor in the refrigeration system is increased in the previous stage, the compressor is restored to the rotating speed before the speed is increased in the stage, and then the stage cooling is performed in steps to ensure that the food enters the supercooling state. In the supercooling release period, the invention provides a method for realizing high-efficiency supercooling release, which can reduce the temperature of a storage area of the stored object in a short time, such as increasing the rotating speed of a condenser fan and the rotating speed of a compressor to rapidly reduce the temperature, and apply an external force to a compartment of the storage area to oscillate the stored object so as to accelerate the supercooling release. And finally, in a conventional refrigeration period, storing in a conventional storage mode, such as stopping oscillation, recovering the rotating speed of a fan of the condenser and the rotating speed of a compressor, setting the temperature at a certain value (excluding 0 ℃) between-7 ℃ and 0 ℃ and the like.
The invention realizes the overcooling state by cooling in stages and optimizes the overcooling state relief, avoids the problem that the overcooling is relieved in advance due to uneven temperature reduction in the overcooling process, has good overcooling relief effect, has deeper overcooling depth and can well enter the overcooling state.
For further explanation, the present invention takes an air-cooled refrigerator as an example, and provides the following specific examples. The air-cooled refrigerator uses cold air as a carrier, and the opening degree of a freezing air door and the rotating speed of a freezing fan can be kept unchanged in the storage process.
Example 1
As shown in fig. 1-5, a control method for instant freezing storage of a refrigerator, which adjusts cold air generated by a refrigeration system to supply cold to stored objects in response to a received instant freezing storage command, and stores the stored objects in an overcooling storage mode comprises four periods: a supercooling preparation period, a supercooling cooling period, a supercooling release period and a conventional refrigeration period.
A supercooling preparation period: in the equipment normally operating with initial working parameters, the rotating speed of a compressor in a refrigeration system is firstly increased, the stored object is stored at a preset preparation temperature, when the temperature of the stored object reaches the preset preparation temperature, a supercooling cooling period is started, and at the moment, the range of the preset preparation temperature can adopt the temperature interval and can be further narrowed, for example, the temperature is set to be 1-3 ℃. The rotating speed of the compressor is increased to uniformly reduce or increase the temperature of the stored objects to the preset preparation temperature, so that the overall temperature is uniformly reduced later, and the internal and external temperatures of the food can be uniformly reduced.
When the time of the preparation period is required, and the temperature of the stored object does not reach the preset preparation temperature and the stored object must enter the supercooling cooling period, the user can adopt another supercooling preparation stage mode to carry out instant freezing storage on the stored object, for example, in the supercooling preparation period, the stored object does not adopt a mode of reaching the preset preparation temperature to enter the supercooling cooling period, the time length of the supercooling preparation period is independently set, and the stored object enters the supercooling cooling period after the set time length is reached. Preferably, the set time period of the supercooling preparation period does not exceed 10 h.
Furthermore, the storage mode based on the set time length of the supercooling preparation period can also be combined with the storage mode of entering the supercooling cooling period after the temperature of the stored object reaches the preset preparation temperature. At the moment, if the temperature of the stored object reaches the preset preparation temperature, the next period is directly started; when the set length of the supercooling preparation period is completed when the preset preparation temperature is not reached, the next period is entered.
In order to improve the efficiency of the preparation process in the supercooling preparation period, in a preferred embodiment, the rotational speed of the compressor is adjusted to the maximum to achieve rapid and effective temperature reduction or temperature rise so that the stored material satisfies the preparation condition as soon as possible. Furthermore, in other modes, at least one of increasing the rotation speed of a condenser fan, capillary throttling and the like can be matched for temperature reduction or temperature rise preparation.
When entering the supercooling cooling period: and recovering the rotating speed of the compressor in the preparation period, and performing a multi-stage cooling process on the stored object by using a preset temperature gradient. The multi-stage cooling process comprises an m stage, and an nth preset cooling time is operated at an nth preset cooling temperature in an nth stage, wherein the nth preset cooling temperature is lower than an nth-1 preset cooling temperature, the nth preset cooling temperature is lower than the preset preparation temperature, m is a positive integer larger than or equal to 2, and n is a positive integer smaller than or equal to m. Preferably, the preset cooling time range for each stage may be set at 0h to 1 h. The preset temperature should be lower than the preset preparation temperature, preferably, the temperature interval of the multi-stage temperature reduction process is-6 ℃ to 0 ℃ and does not include 0 ℃, wherein part of the interval can be used as the upper limit and the lower limit of the multi-stage temperature reduction to be used as the temperature interval for realizing the multi-stage temperature reduction.
The stored objects are cooled evenly by the temperature set in the multi-stage gradual cooling process, so that the food is ensured to enter a supercooling state, and uniform freezing is realized after supercooling is relieved.
For the supercooling release period: after the multi-stage cooling process is completed, the overcooled state of the stored object is released. Preferably, the rotational speed of the condenser fan and the rotational speed of the compressor are increased within a preset release time, and the oscillating device is turned on to oscillate, so that supercooling acceleration is released. Since the temperature difference of the stored material needs to be changed in a short time when the supercooling release state is established, other alternative embodiments are not limited to a combination of increasing the rotational speed of the condenser fan and increasing the rotational speed of the compressor and the oscillation device, and may be assisted by capillary throttling or the like. The preset release time is not more than 10h, the oscillation time is not more than 10h, and the oscillation can also be carried out intermittently at a preset frequency and a preset oscillation period. The process is to ensure that the stored material in the overcooled state has as much water as possible to form ice crystals instantly and pass through the largest ice crystal generation zone quickly.
After receiving the instruction of the control unit, the oscillating device can generate an external force for driving the compartment drawer to oscillate in a small amplitude, and stored objects in the drawer can be driven to oscillate together, so that the supercooling state is relieved. Preferably, an oscillator is arranged on one side and/or the bottom of the drawer and can vibrate at a certain frequency, so that the drawer and the stored object can vibrate under the action of the oscillator.
Finally, a conventional refrigeration cycle is entered after the above process is completed. During the period, the stored substance can be stored in a conventional storage mode by stopping oscillation and recovering the rotating speed of the fan and the rotating speed of the compressor of the condenser. In the present invention, the normal storage period is a period in which the stored material is stored at a predetermined temperature, that is, the stored material is kept in a frozen state at the predetermined temperature. Preferably, the temperature of the conventional storage method is set to-7 ℃ to 0 ℃ excluding 0 ℃, and the storage state of the stored material is kept stable.
For the capillary tube in the mode, the preset value V1 of the flow during the initial operation satisfies 4.5L/min-V1-5L/min, and the flow can be reduced to V2 for throttling when switching is carried out, wherein 2L/min-V2-3L/min; when the condenser fan in the refrigeration system is adjusted, the rotating speed S1 before speed increase (namely the rotating speed kept in the conventional refrigeration period before the supercooling preparation period is ended) meets the condition that the rotating speed is more than or equal to 1200rpm and less than or equal to S1 and less than or equal to 1500rpm, and the rotating speed S2 after speed increase (which can be adjusted to the maximum rotating speed) meets the condition that the rotating speed is more than or equal to 1600rpm and less than or equal to S2 and less than; when the rotating speed M of the compressor is adjusted, the rotating speed M is respectively equal to or less than 1200rpm and equal to or less than M1 and equal to or less than 1400rpm before and after the speed is increased, and the rotating speed M is equal to or less than 3800rpm and equal to or less than M2 and equal to or less than 4500 rpm.
Example 2
The embodiment specifically discloses a refrigerator with instant freezing storage function, which comprises a control unit and corresponding basic hardware equipment matched with the control unit to realize instant freezing storage. The control unit in the refrigerator is stored by adopting any one of the control methods.
Example 3
Another more specific refrigerator having a flash freezing storage function is disclosed in this embodiment as shown in fig. 2 to 5, in which a storage chamber, an oscillation device, a refrigeration system, and a control unit are included. The storage chamber is used for providing a space environment for storing stored objects, and comprises a drawer and the like. The oscillating device is controlled by the control unit and drives the drawer to apply external force to the stored object to oscillate after being started. A refrigeration system supplies cold to the stored item in the storage compartment in response to control by the control unit, wherein the refrigeration system includes a condenser fan and a compressor. A condenser fan in the refrigeration system responds to the control of the control unit to radiate the heat of the refrigerant sent by the compressor; the compressor can be varied in speed in response to control by the control unit to regulate cooling of the stored item. Preferably, the compressor and the condenser fan are increased to the maximum rotation speed during the speed increase, and a frequency conversion plate is arranged at the compressor, and the compressor adopts frequency conversion regulation. The control unit is used as a control center of the refrigerator and controls cold air generated by the refrigerating system to supply cold to the stored objects. Further, during the subcooling preparation period: the control unit controls the refrigerating system to increase the rotating speed of the compressor so as to supply cold to the stored object at a preset preparation temperature; in the supercooling and cooling period: the control unit controls the refrigerating system to recover the rotating speed of the compressor, and performs a multi-stage cooling process on the stored object by using a preset temperature gradient; in the supercooling release period: the control unit controls the oscillation device to apply external force to the stored object for oscillation within preset release time, and improves the rotating speed of a condenser fan and the rotating speed of a compressor; during the normal refrigeration period: the control unit controls the oscillation device to stop oscillating, controls the refrigerating system to recover the rotating speed of the condenser fan and the rotating speed of the compressor, and stores the stored object in a conventional storage mode.
Further, the multi-stage cooling process comprises m stages, wherein m is a positive integer greater than or equal to 2. Specifically, the nth preset cooling temperature is operated at the nth preset cooling time in the nth stage, the nth preset cooling temperature is lower than the nth-1 preset cooling temperature, the nth preset cooling temperature is required to be lower than the preset preparation temperature, the nth preset cooling time in the nth stage is within a range of 0 h-1 h, and n is a positive integer not greater than m.
The refrigeration system in the refrigerator further includes a capillary tube, an electric switching valve, a temperature monitoring unit, and a timer. The capillary tube is arranged in a refrigerant flow path of the refrigeration system and used for conveying refrigerant; the electric switching valve responds to a switching instruction of the control unit and switches the capillary tube to realize throttling control on the refrigerant in the capillary tube; the temperature monitoring unit monitors the temperature of the stored object; the timer records the cooling time of the nth stage in the multi-stage cooling process. Preferably, the temperature monitoring unit employs non-contact monitoring, such as an infrared sensor or the like.
For the temperature of each stage of the refrigerator in each period, preferably, the preset preparation temperature is in the range of 0-5 ℃ and does not include 0 ℃; the temperature interval of the multi-stage cooling process is-6 ℃ to 0 ℃ and does not include 0 ℃; the temperature of the conventional storage mode is-7 ℃ to 0 ℃ and does not include 0 ℃.
In addition, after the control unit in the refrigerator is further optimized, the refrigeration system is controlled to enter the supercooling cooling period after the set time of the supercooling preparation period is reached, and the mode of judging whether to enter the supercooling cooler according to the set time and the monitoring temperature can be independently set or matched with the mode. When both are used as the judgment conditions, the next period will be entered when either one of them reaches the judgment condition. More preferably, the set time period of the supercooling preparation period does not exceed 10 h.
In any of the above embodiments 1 to 3, for the control of the temperature at each stage, the following procedure may also be adopted: after the user selects the instant freezing storage function on the display according to the requirement, the control unit senses the temperature of the storage area or the stored object through the temperature sensor in the temperature monitoring unit.
During the supercooling preparation period, the operation is carried out according to a preset temperature T0, and when the compressor is started or stopped, a starting temperature point T is seton0＝T0+TB1/2, shutdown temperature Point Toff0＝Ton0-TB2And/2, setting the running time to be T0, running the compressor at M2, running the capillary at V1 flow, and running the condenser fan at S1, wherein T0 is more than or equal to 1 ℃ and less than or equal to 5 ℃. T0 is more than or equal to 0 and less than or equal to 10 hours, T is more than 0 DEG CB1,TB2≤2℃，TB1Indicating the floating temperature of a starting point of an instantaneous freezing chamber in the starting process of the compressor; t isB2The method is characterized in that the temperature of the compartment is uniformly reduced to or increased to be higher than 0 ℃, so that the overall temperature is uniformly reduced later, and the internal temperature and the external temperature of the food can be uniformly reduced.
The control unit is used for cooling the compartment in stages in the supercooling cooling period, specifically, the control unit is used for cooling in stages in the supercooling cooling period, and the method specifically comprises the following steps:
the supercooling and cooling period is divided into m stages to be executed successively: after the period, the operation is carried out according to the preset temperature Tn, the rotating speed of the compressor is operated at M1, the capillary tube is operated at V1 flow, the rotating speed of the fan of the condenser is S1, the operation time is set to Tn, wherein when the compressor is started and stopped, the starting temperature point T is setonn＝Tn+TB1/2, shutdown temperature Point Toffn＝Tonn-TB2And 2, starting the timer, and entering the next period after the running time tn is finished. Wherein tn is more than 0h and less than or equal to 1 h; tn is more than or equal to minus 6 ℃ and less than 0 ℃, Tn is more than or equal to Tn-1, TB1Indicating the floating temperature of a starting point of an instantaneous freezing chamber in the starting process of the compressor; t isB2The temperature difference between the start and stop of the instant freezing chamber is defined, n is less than or equal to m and n is a positive number.
As shown in fig. 3 to 4, in the supercooling release stage: the flow rate of the capillary tube is V1; the compressor speed is M2, the condenser fan speed is S2, the maximum cold air is given to the stored object, the operation time is set as tRelieve fromThe timer starts to time, and when the running time reaches the next period, the time is more than or equal to t within 10hRelieve from> 0h, this ensures that as much water as possible in the supercooled state of the food product instantaneously forms ice crystals, rapidly passing through the largest ice crystal generation zone.
In the conventional refrigeration preservation stage: the capillary tube was operated at flow V1, the compressor speed was M1, the condenser fan speed was S1, and the chamber was controlled at temperature T during the conventional storage period. Further, in order to keep the frozen meat preserved in good condition, it is usually selected to have a temperature of-7 ℃ or more and T < 0 ℃.
In the above manner, when the condenser fan is adjusted in the operating refrigeration system, the rotation speed S1 before speed increase (i.e., the rotation speed that can be maintained during the normal refrigeration period before the end of the supercooling preparation period) satisfies 1200rpm ≦ S1 ≦ 1500rpm, and the rotation speed S2 after speed increase (which can be adjusted to the maximum rotation speed) satisfies 1600rpm ≦ S2 ≦ 1900 rpm; the rotating speed M of the running compressor respectively meets the conditions that the rotating speed M is more than or equal to 1200rpm and less than or equal to M1 and less than or equal to 1400rpm, and the rotating speed M is more than or equal to 3800rpm and less than or equal to M2 and less than or equal to 4500rpm before and after the speed is increased; when the flow of the capillary is required to be throttled, the throttling requirement is that V1 is more than or equal to 4.5L/min and less than or equal to 5L/min, and the throttling requirement is that V2 is more than or equal to 2L/min and less than or equal to 3L/min.
In another temperature adjustment method, when the temperature at each time is adjusted and maintained at a value close to a certain temperature, the storage may be assisted by not only opening and closing a damper of a refrigerator compartment, opening and closing a freezing fan, a condenser fan, or the like, but also opening and closing at least one of the damper, the freezing fan, the condenser fan, or the like.
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 control method for instant freezing storage of refrigerator features that the cold air generated by refrigerating system is regulated in response to the received instant freezing storage instruction to cool the stored substance, and the storage of said substance by overcooling storage mode includes
A supercooling preparation period: firstly, increasing the rotating speed of a compressor in a refrigeration system, storing a stored object at a preset preparation temperature, and entering a supercooling cooling period when the temperature of the stored object reaches the preset preparation temperature, wherein the preset preparation temperature is in a range of 0-5 ℃ and does not include 0 ℃;
and (3) supercooling and cooling period: the rotating speed of the compressor is recovered, the stored object is subjected to a multi-stage cooling process by a preset temperature gradient,
the multi-stage cooling process comprises an m stage, and an nth preset cooling time is operated at an nth preset cooling temperature in an nth stage, wherein the nth preset cooling temperature is lower than an nth-1 preset cooling temperature, the nth preset cooling temperature is lower than the preset preparation temperature, m is a positive integer greater than or equal to 2, and n is a positive integer less than or equal to m;
supercooling release period: after the multi-stage cooling process is finished, applying external force to the stored object within preset removing time to oscillate and improving the rotating speed of a condenser fan and the rotating speed of a compressor in the refrigerating system so as to remove supercooling;
and (3) in a conventional refrigeration period: after the supercooling release period is finished, stopping oscillation, recovering the rotating speed of the condenser fan and the rotating speed of the compressor, and storing the stored object in a conventional storage mode.
2. The control method for instant freeze storage of a refrigerator as claimed in claim 1, wherein the condenser fan rotation speed S1 before the speed up S1 is 1200rpm ≦ 1500rpm, and the rotation speed after the speed up S2 is 1600rpm ≦ S2 ≦ 1900 rpm; the rotation speed M1 of the compressor before the speed rise is more than or equal to 1200rpm and less than or equal to M1 and less than or equal to 1400rpm, and the rotation speed M2 after the speed rise is more than or equal to 3800rpm and less than or equal to M2 and less than or equal to 4500 rpm.
3. The control method for instant freeze storage of a refrigerator according to claim 1, wherein the nth preset cool down time ranges from 0h to 1 h.
4. The control method for instant freeze storage of a refrigerator according to claim 3, wherein the set time period of the supercooling preparation period is not more than 10h, and the supercooling cooling period is entered after the set time period is reached.
5. The control method for instant freeze storage of a refrigerator according to claim 4, wherein the temperature interval of the multi-stage cooling process is-6 ℃ to 0 ℃ excluding 0 ℃.
6. The control method for instant freeze storage of a refrigerator according to claim 5, wherein the temperature of the normal storage manner is-7 ℃ to 0 ℃ excluding 0 ℃.
7. The control method for instant freeze storage of a refrigerator according to claim 1, wherein the nth preset cooling time range is 0h to 1 h; the temperature interval of the multi-stage cooling process is-6-0 ℃ and does not include 0 ℃; the temperature of the conventional storage mode is-7 ℃ to 0 ℃ and does not include 0 ℃.
8. A control method for instant freezing storage of refrigerator features that the cold air generated by refrigerating system is regulated in response to the received instant freezing storage instruction to cool the stored substance, and the storage of said substance by overcooling storage mode includes
A supercooling preparation period: firstly, increasing the rotating speed of a compressor in a refrigeration system, storing the stored object at a preset preparation temperature within a preset preparation time, and entering a supercooling cooling period after the preset preparation time is finished, wherein the preset preparation temperature is in a range of 0-5 ℃ and does not include 0 ℃;
and (3) supercooling and cooling period: the rotating speed of the compressor is recovered, the stored object is subjected to a multi-stage cooling process by a preset temperature gradient,
the multi-stage cooling process comprises an m stage, and an nth preset cooling time is operated at an nth preset cooling temperature in an nth stage, wherein the nth preset cooling temperature is lower than an nth-1 preset cooling temperature, the nth preset cooling temperature is lower than the preset preparation temperature, m is a positive integer greater than or equal to 2, and n is a positive integer less than or equal to m;
supercooling release period: after the multi-stage cooling process is finished, applying external force to the stored object within preset removing time to oscillate and improving the rotating speed of a condenser fan and the rotating speed of a compressor in the refrigerating system so as to remove supercooling;
and (3) in a conventional refrigeration period: after the supercooling release period is finished, stopping oscillation, recovering the rotating speed of the condenser fan and the rotating speed of the compressor, and storing the stored object in a conventional storage mode.
9. The control method for instant freeze storage of a refrigerator according to any one of claims 1 to 8,
the applying of the external force performs oscillation: the oscillating device at the drawer of the storage chamber for storing the stored object is opened to apply external force to the stored object in the drawer for oscillation.
10. A refrigerator with instant freezing storage function is characterized in that the refrigerator comprises
A control unit, which is stored by using the control method of any one of the preceding claims 1-9.
11. A refrigerator with instant freezing storage function is characterized in that the refrigerator comprises
A storage chamber for storing the stored object;
oscillation means for applying an external force to the stored object in response to control by the control unit to perform oscillation;
the refrigeration system is used for supplying cold to the stored object in the storage chamber in response to the control of the control unit, and comprises a condenser fan and a compressor, wherein the condenser fan is used for dissipating the heat of the refrigerant sent by the compressor in response to the control of the control unit, and the compressor is used for changing the speed in response to the control of the control unit so as to adjust the cold supply to the stored object;
the control unit is used for controlling the cold air generated by the refrigerating system to supply cold to the stored object,
wherein during the subcooling preparation period: the control unit controls the refrigerating system to increase the rotating speed of the compressor so as to supply cold to the stored object at a preset preparation temperature; in the supercooling and cooling period: the control unit controls the refrigerating system to recover the rotating speed of the compressor, and performs a multi-stage cooling process on the stored object by using a preset temperature gradient; in the supercooling release period: the control unit controls the oscillation device to oscillate and controls the refrigeration system to increase the rotating speed of the condenser fan and the rotating speed of the compressor within the preset release time; during the normal refrigeration period: the control unit controls the oscillation device to stop oscillating, controls the refrigerating system to recover the rotating speed of the condenser fan and the rotating speed of the compressor, and stores the stored object in a conventional storage mode.
12. The refrigerator of claim 11, wherein the multi-stage cooling process includes m stages, and the n stage is operated at an n preset cooling temperature for an n preset cooling time, wherein the n preset cooling temperature is lower than an n-1 preset cooling temperature, the n preset cooling temperature is lower than the preset preparation temperature, m is a positive integer greater than or equal to 2, and n is a positive integer less than or equal to m; the nth preset cooling time ranges from 0h to 1 h.
13. The refrigerator of claim 12, further comprising a flash storing function
A temperature monitoring unit for monitoring the temperature of the stored object;
a capillary tube provided in a refrigerant flow path of the refrigeration system for transporting a refrigerant;
the electric switching valve is used for responding to a switching instruction of the control unit and switching the capillary tube to realize throttling control on the refrigerant in the capillary tube;
and the timer is used for recording the cooling time of the nth stage in the multi-stage cooling process.
14. The refrigerator having a flash storing function according to claim 13, wherein the preset preparation temperature is in a range of 0 ℃ to 5 ℃ excluding 0 ℃; the temperature interval of the multi-stage cooling process is-6-0 ℃ and does not include 0 ℃; the temperature of the conventional storage mode is-7 ℃ to 0 ℃ and does not include 0 ℃.
15. The refrigerator with instant freezing storage function according to any one of claims 11 to 14, wherein the control unit is further configured to control the refrigeration system to enter the supercooling cooling period after a set time period of the supercooling preparation period is reached, wherein the set time period of the supercooling preparation period is not more than 10 h.
CN201911046375.0A 2019-10-30 2019-10-30 Control method for instant freezing storage of refrigerator and refrigerator Pending CN110953821A (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101636625A (en) * 2007-04-17 2010-01-27 三菱电机株式会社 Refrigerator and method of refrigeration
CN109253572A (en) * 2018-09-12 2019-01-22 合肥晶弘电器有限公司 A kind of refrigeration equipment and its control method of achievable supercooling preservation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101636625A (en) * 2007-04-17 2010-01-27 三菱电机株式会社 Refrigerator and method of refrigeration
CN109253572A (en) * 2018-09-12 2019-01-22 合肥晶弘电器有限公司 A kind of refrigeration equipment and its control method of achievable supercooling preservation

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