CN111609640B - Refrigerator and ice-slush manufacturing control method - Google Patents
Refrigerator and ice-slush manufacturing control method Download PDFInfo
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- CN111609640B CN111609640B CN202010372765.3A CN202010372765A CN111609640B CN 111609640 B CN111609640 B CN 111609640B CN 202010372765 A CN202010372765 A CN 202010372765A CN 111609640 B CN111609640 B CN 111609640B
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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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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
- A23G9/00—Frozen sweets, e.g. ice confectionery, ice-cream; Mixtures therefor
- A23G9/04—Production of frozen sweets, e.g. ice-cream
- A23G9/22—Details, component parts or accessories of apparatus insofar as not peculiar to a single one of the preceding groups
- A23G9/228—Arrangement and 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
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
- F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
- F25D17/065—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators with 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
- F25D23/00—General constructional features
- F25D23/12—Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove
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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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
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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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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The invention provides a refrigerator and a method for controlling the production of ice shavings. The refrigerator comprises a temperature-variable chamber, a refrigerating chamber and a freezing chamber, wherein the refrigerating chamber is provided with a refrigerating chamber air return device, the freezing chamber is provided with a freezing chamber air return device, the refrigerating chamber air return device can controllably introduce airflow in the refrigerating chamber into the temperature-variable chamber, and the freezing chamber air return device can controllably introduce airflow in the freezing chamber into the temperature-variable chamber. According to the refrigerator and the method for controlling the preparation of the ice-shavings, the return air in the refrigerating chamber and the freezing chamber is introduced into the temperature-variable chamber at different control stages, so that the inside and the outside of an object to be ice-made are uniformly frozen, the number of ice crystals of the formed ice-shavings is large, the particles are small, the edible taste is improved, and the ice-shavings are convenient to take.
Description
Technical Field
The invention belongs to the technical field of refrigeration, and particularly relates to a refrigerator and a method for controlling the production of ice-shavings.
Background
According to the freezing basic principle, in the process of realizing freezing of liquid, the higher the crystallization speed is, the smaller and more mellow the ice crystal can be, and when the traditional refrigerator is used for making ice, because the outlet air temperature of a freezing chamber or the freezing chamber is low, the growth direction of the ice crystal is from the surface to the inside in the process of freezing water, the ice making time is long, the freezing temperature is low, and the taking is difficult; the ice shavings are crushed into crushed ice by the ice crusher, and the ice shavings formed by crushing the ice shavings made in the traditional refrigerator are large and sharp, have high hardness and bad taste, and have potential harm to human health.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to provide a refrigerator and a method for controlling the production of the ice-sha, wherein return air in a refrigerating chamber and a freezing chamber is introduced into a temperature-variable chamber at different control stages, so that an object to be made ice can be frozen uniformly inside and outside, the number of formed ice-sha ice crystals is large, the particles are small, the edible taste is improved, and the ice-sha ice is convenient to take.
In order to solve the above problems, the present invention provides a refrigerator including a temperature-varying chamber, a refrigerating chamber having a refrigerating chamber air returning device, and a freezing chamber having a freezing chamber air returning device capable of controllably introducing an air flow in the refrigerating chamber into the temperature-varying chamber, the freezing chamber air returning device capable of controllably introducing an air flow in the freezing chamber into the temperature-varying chamber.
Preferably, the refrigerating chamber air returning device is positioned in the adjacent area of the refrigerating chamber and the temperature-changing chamber, and the freezing chamber air returning device is positioned in the adjacent area of the temperature-changing chamber and the freezing chamber.
The invention also provides a control method for making the ice-shavings, which is used for controlling the refrigerator and comprises the following steps:
a pre-cooling stage, namely adjusting the compartment temperature of the temperature-changing chamber from an initial temperature T0 to a first preset temperature T1;
in the supercooling stage, the room temperature of the temperature changing chamber is adjusted to a second preset temperature T2 from T1, so that the ice object to be made enters a supercooling state;
a freezing stage, adjusting the room temperature of the temperature changing chamber from T2 to a third preset temperature T3, so that the ice-making object is converted from a supercooling state to an icing state;
wherein T0 & gtT 1 & gtTd & gtT 2 & gtT 3, and Td is the freezing point temperature of the object to be made ice.
Preferably, the first and second electrodes are formed of a metal,
the pre-cooling stage comprises a rapid cooling pre-cooling stage and a uniform cooling pre-cooling stage,
in the rapid cooling and precooling stage, the compartment temperature of the temperature-variable chamber is adjusted from an initial temperature T0 to a fifth preset temperature T5;
in the stage of uniformly cooling and precooling, the compartment temperature of the temperature-variable chamber is adjusted to a first preset temperature T1 from T5;
wherein T0 > T5 > T1.
Preferably, the first and second electrodes are formed of a metal,
in the quick cooling and precooling stage, the refrigerating chamber air return device is controlled to be started to introduce the airflow in the refrigerating chamber into the temperature changing chamber; and in the uniform cooling and precooling stage, the freezing chamber air return device is controlled to be started to introduce the airflow in the freezing chamber into the temperature changing chamber and mix the airflow introduced from the refrigerating chamber.
Preferably, the first and second electrodes are formed of a metal,
when the freezing chamber air return device is started, the running frequency of a compressor of the refrigerator is controlled to be a first frequency.
Preferably, the first and second electrodes are formed of a metal,
when the freezing chamber air return device is in the freezing stage, the running frequency of a compressor of the refrigerator is controlled to be a second frequency, the second frequency is higher than the first frequency, and the opening state of the freezing chamber air return device is maintained.
Preferably, the first and second electrodes are formed of a metal,
when the ice-sand storage stage is in place, the refrigerator is controlled to have the running frequency of the compressor at a third frequency, and the third frequency is lower than the second frequency.
Preferably, the first and second electrodes are formed of a metal,
the supercooling stage comprises a supercooling degree accumulation stage and a supercooling degree maintaining stage,
in the supercooling degree accumulation stage, the temperature of the room of the temperature changing chamber is adjusted from a first preset temperature T1 to a second preset temperature T2;
in the supercooling degree keeping stage, keeping the temperature of the compartment of the temperature changing chamber to be constant at a second preset temperature T2;
and/or the sand ice storage stage is further included, the temperature of the room of the temperature changing chamber is adjusted to a fourth preset temperature T4 from T3, and Td is more than or equal to T4 and more than or equal to T2.
Preferably, the first and second electrodes are formed of a metal,
the subcooling accumulation stage comprises a plurality of successive temperature reduction sub-stages.
The invention provides a refrigerator and a method for controlling the production of ice-sand, which can lead the air flow in a refrigerating chamber and/or the air flow in a freezing chamber into a temperature changing chamber according to the requirement of the refrigerating of the temperature changing chamber on the temperature, on one hand, the corresponding refrigerating system does not need to be arranged separately aiming at the temperature changing chamber, the design cost of the product is reduced, on the other hand, the precise control of the temperature of the variable temperature chamber can be realized by selecting whether the refrigerating chamber air return device and the freezing chamber air return device are started or not and controlling the air return amount of the refrigerating chamber air return device and the freezing chamber air return device because the temperature difference of the air return flow in the refrigerating chamber and the freezing chamber is larger, when the variable temperature chamber is used for producing the ice-sand, the refrigerator of the technical proposal of the invention can fully combine the actual node temperature and the supercooling degree of an object, and precisely adjust the temperature of the, the ice making machine has the advantages that the inside and the outside of an object to be made ice are uniformly frozen, the number of formed ice crystals of the ice is large, the particles are small, the edible taste is improved, and the ice making machine is not required to be used for breaking and is convenient to use.
Drawings
Fig. 1 is a schematic structural view of a refrigerator according to an embodiment of the present invention;
FIG. 2 is a schematic view showing the temperature regulation with time in a temperature-varying chamber according to another embodiment of the method for controlling the production of ice-shavings;
fig. 3 is a flow chart of a method for controlling the production of the ice confectionery according to another embodiment of the present invention.
The reference numerals are represented as:
1. a temperature-variable chamber; 2. a refrigerating chamber; 21. a refrigerating chamber air return device; 3. a freezing chamber; 31. and a freezing chamber air return device.
Detailed Description
Referring to fig. 1 to 3 in combination, according to an embodiment of the present invention, a refrigerator is provided, which includes a temperature-variable chamber 1, a refrigerating chamber 2, and a freezing chamber 3, wherein the refrigerating chamber 2 has a refrigerating chamber air returning device 21, the freezing chamber 3 has a freezing chamber air returning device 31, the refrigerating chamber air returning device 21 can controllably introduce the airflow in the refrigerating chamber 2 into the temperature-variable chamber 1, the freezing chamber air returning device 31 can controllably introduce the airflow in the freezing chamber 3 into the temperature-variable chamber 1, and it can be understood that a corresponding temperature-variable chamber air returning device (not shown in the figure) is further provided in the temperature-variable chamber 1 to introduce the airflow in the temperature-variable chamber 1 back to a heat exchanger (evaporator) of a refrigeration system of the refrigerator for heat exchange again. The refrigerating chamber air returning device 21, the freezing chamber air returning device 31 and the variable-temperature chamber air returning device may be, for example, air outlets with air volume control capability (for example, air outlets with air valves, the opening degree of which may be controlled by a preset temperature), and the circulating power of the air flow may be provided by a fan at a heat exchanger of the refrigerator refrigeration system, and further, each air returning device should ensure its one-way guiding function of the air flow to meet the circulating flow requirement of the air flow. In the technical scheme, the air flow in the refrigerating chamber 2 and/or the air flow in the freezing chamber 3 can be guided into the temperature-changing chamber 1 according to the refrigerating requirement of the temperature-changing chamber 1, on one hand, a corresponding refrigerating system does not need to be separately arranged aiming at the temperature-changing chamber, the design cost of products is reduced, on the other hand, the difference of the temperatures of the return air flows in the refrigerating chamber 2 and the freezing chamber 3 is large (the temperature of the refrigerating chamber 2 is generally higher than 0 ℃, and the temperature of the freezing chamber 3 is far lower than 0 ℃, for example, -15 ℃), the accurate control of the temperature of the refrigerating chamber 1 can be realized by selecting whether the refrigerating chamber return air device 21 and the freezing chamber return air device 31 are started or not and controlling the return air flow rates of the two return air (for example, the opening degrees of air valves of the air ports are respectively controlled), when the temperature-changing chamber 1 is used for making sand and ice, the refrigerator of the technical scheme of the invention can, certainly, other drinks) and the supercooling degree (the cold quantity stored in the ice-making object), the ice-making object can be frozen uniformly inside and outside, the formed ice crystals of the ice-making object are more in number and smaller in particle size by accurately adjusting the temperature of the chamber of the temperature-changing chamber 1, the edible taste is improved, and the ice-making object can be conveniently taken without being broken by an ice shaver.
Preferably, the refrigerating chamber air return device 21 is located in an adjacent area between the refrigerating chamber 2 and the temperature-changing chamber 1, and the freezing chamber air return device 31 is located in an adjacent area between the temperature-changing chamber 1 and the freezing chamber 3, so that the air duct lengths of the refrigerating chamber air return device 21 and the freezing chamber air return device 31 are shortened, and the air duct structure of the refrigerator is more compact.
According to an embodiment of the present invention, there is also provided a method for controlling ice making, for controlling the above refrigerator, including: a pre-cooling stage, adjusting the compartment temperature of the temperature changing chamber 1 from an initial temperature T0 to a first preset temperature T1; in the supercooling stage, the compartment temperature of the temperature changing compartment 1 is adjusted from T1 to a second preset temperature T2, so that the ice-making object enters a supercooling state; a freezing stage, adjusting the temperature of the compartment of the temperature changing chamber 1 from T2 to a third preset temperature T3, so as to convert the ice-making object from a supercooled state to an iced state; wherein T0 is more than T1 is more than or equal to Td which is more than T2 is more than T3, Td is the freezing point temperature of the object to be made ice, and Td is generally not higher than 0 ℃. The ice-making object such as water is frozen under the conditions that the temperature is less than or equal to 0 ℃ and condensation nuclei (or frozen nodules) exist in the water, the ice-making of the water is really a phenomenon of crystallization, the crystallization firstly needs the condensation nuclei, then the condensation nuclei grow continuously and grow into massive crystals, the temperature is not reduced to 0 ℃, the water is frozen, small particles are also needed to be contained in the water and used as attachments when water molecules are just frozen, the small particles contained in the water are called the nuclei, the water which is not frozen at the temperature of less than 0 ℃ is called 'supercooled water', the water which cannot be crystallized is in a very unstable metastable state, and the metastable state can be broken to quickly freeze as long as the water is subjected to small disturbance or small changes in the environment, and the factors influencing the crystallization process of the solution mainly include the temperature, the freezing nuclei (or the frozen nodules), The saturation, crystal nucleus and growth speed thereof, in addition to the nucleation substances such as impurities, the temperature also has great influence on the 'supercooled water', each substance (for example, the sand ice with various corresponding tastes is prepared by using liquid beverages such as fruit juice and the like) has own equilibrium crystallization temperature or is called theoretical crystallization temperature, but in the actual crystallization process, the actual crystallization temperature is always lower than the theoretical crystallization temperature, the phenomenon is the supercooling phenomenon, and the difference value between the actual crystallization temperature and the theoretical crystallization temperature is called 'supercooling degree', so the supercooling phenomenon is easier to occur for the liquid with the larger supercooling degree, and the water is harder to freeze. The technical scheme is based on the phenomenon, the ice-making object is quickly precooled in temperature and then is further in a low-temperature supercooled state without freezing, dynamic balance among supercooled water is broken through a mode of suddenly reducing the temperature after the supercooled state, condensation nuclei exist in the supercooled water, the supercooled water is completely and quickly condensed into ice crystals due to the condensation nuclei, the temperature and the cold quantity of the ice-making object can be more uniformly distributed in the process, the formed sand ice crystals are large in quantity and small in particle size, the edible taste is improved, and the ice-making object is convenient to use.
The pre-cooling stage further comprises a rapid cooling pre-cooling stage and an even cooling pre-cooling stage, wherein in the rapid cooling pre-cooling stage, the compartment temperature of the temperature changing chamber 1 is adjusted from an initial temperature T0 to a fifth preset temperature T5; in the stage of uniformly cooling and precooling, the temperature of the compartment of the temperature-variable chamber 1 is adjusted to a first preset temperature T1 from T5; wherein T0 > T5 > T1. Specifically, in the rapid cooling and precooling stage, the refrigerating chamber air return device 21 is controlled to be turned on to introduce the airflow in the refrigerating chamber 2 into the temperature-variable chamber 1; in the uniform cooling and precooling stage, the freezing chamber air returning device 31 is controlled to be started to introduce the airflow in the freezing chamber 3 into the temperature changing chamber 1 to be mixed with the airflow introduced from the refrigerating chamber 2. According to the technical scheme, the difference between the return air temperature of the refrigerating chamber and the return air temperature of the freezing chamber is fully utilized, the temperature of the room of the temperature changing chamber 1 is quickly reduced to T5 by adopting the return air of the refrigerating chamber in the quick cooling and precooling stage, and because the return air temperature of the refrigerating chamber is higher than 0 ℃, the object to be ice is not frozen by utilizing the quick reduction of the temperature of the room of the temperature changing chamber 1, the time is shorter, and the efficiency is higher; and then, returning air with a lower temperature of the freezing chamber 3 is introduced, and the accurate control of the temperature of the chamber in the uniform cooling and precooling stage is realized by controlling the ratio of the returning air of the refrigerating chamber to the returning air of the freezing chamber, so that the temperature control of the object to be made ice is more accurate.
Preferably, when the freezing chamber air returning device 31 is turned on, the operating frequency of the compressor of the refrigerator is controlled to be a first frequency, wherein the first frequency is lower and is at least lower than the operating frequency of the corresponding refrigerator compressor before the freezing chamber air returning device 31 is turned on, that is, when the freezing chamber air returning device 31 is turned on, the operating frequency of the compressor is reduced to operate, so that the lowest value of temperature adjustment after the freezing chamber air returning and the refrigerating chamber air returning are mixed is prevented from being too low due to too low freezing chamber air returning temperature, and an object to be made ice is enabled to enter a freezing state in advance. And when the refrigerator is in the freezing stage, the operation frequency of the compressor of the refrigerator is controlled to be a second frequency, the second frequency is higher than the first frequency, and the opening state of the freezing chamber air return device 31 is maintained, namely the operation frequency of the compressor is increased in the freezing stage, so that the temperature of the freezing chamber is further reduced, and the smooth operation of the freezing process is ensured. When the refrigerator is in the ice-sand storage stage, the running frequency of a compressor of the refrigerator is controlled to be the third frequency, the third frequency is lower than the second frequency, the running frequency of the compressor is reduced at the moment, the storage temperature of the ice-sand is raised, and therefore the formed ice-sand can be prevented from being too high in hardness when being in a low temperature for a long time, namely the raising of the storage temperature can reduce the hardness of the ice-sand and further improve the taste of the ice-sand. For example, the ice storage phase regulates the temperature of the chamber of the temperature-variable chamber 1 from T3 to a fourth preset temperature T4, Td ≧ T4 ≧ T2.
The supercooling phase specifically comprises a supercooling degree accumulation phase and a supercooling degree maintaining phase, wherein the supercooling degree accumulation phase adjusts the room temperature of the temperature changing chamber 1 from a first preset temperature T1 to a second preset temperature T2; and in the supercooling degree keeping stage, keeping the temperature of the chamber of the temperature changing chamber 1 to be constant at a second preset temperature T2. In the technical scheme, the supercooling degree accumulation stage can gradually introduce and store the cooling capacity in the temperature changing chamber 1 into the object to be made with ice, and the supercooling degree keeping stage is favorable for uniformly distributing the cooling capacity in the object to be made with ice, so that the freezing homogenization effect of the object to be made with ice after the temperature of the compartment is further reduced is further improved.
The supercooling degree accumulation stage comprises a plurality of continuous temperature reduction sub-stages, the temperature reduction sub-stages can comprise a plurality of processes of sequentially reducing the temperature, and the plurality of temperature reduction sub-stages can respectively comprise a temperature maintaining stage so as to further improve the homogenization of the supercooling degree.
To further explain the technical solution of the present application, taking the object to be made ice as water as an example, the following is further described with reference to fig. 2 and 3.
As shown in fig. 2, in the figure:
t5: the fifth preset temperature, the value range is generally [4 ℃, 8 ℃), and the preferred value A is [4 ℃, 6 ℃;
t1: the first preset temperature is generally in the value range of [0 ℃ and 5 ℃), and the preferred value B is [0 ℃ and 2 ℃;
td: the freezing point temperature of water is generally in the range of-5 ℃ and 0 ℃, and the preferred value C is-3 ℃ and-1 ℃;
t4: the fourth preset temperature is generally in the range of-7 ℃ and 0 ℃, and the preferred value D is-5 ℃ and-3 ℃;
t2: the second preset temperature is generally in the range of-10 ℃ and-3 ℃, and preferably E is in the range of-7 ℃ and-5 ℃;
t3: the third preset temperature is generally in the range of-20 ℃ and-5 ℃, and the preferred value F is-10 ℃ and-7 ℃.
0 to t 2: and (5) a pre-cooling stage. The stage is divided into two time periods, 0-t 1 is a first pre-cooling period, at the moment, the air return device of the refrigerating chamber is opened, and the air direction is uniformly and rapidly cooled from top to bottom. t 1-t 2 is the second precooling section, at this time, the frequency of the compressor is reduced, the freezing chamber air return device is started, the introduced air of the freezing chamber is mixed with the air of the refrigerating chamber, and the temperature of the temperature changing chamber is slowly and uniformly reduced. And at the end of the pre-cooling section, the temperature T of the variable temperature chamber is less than B.
t 2-t 5: and (5) a supercooling stage. The air return device of the refrigerating chamber is closed at the stage, air with small refrigerating capacity is introduced into the freezing chamber, the temperature of water is continuously or stage-by-stage reduced, the over-high rate of reduction of the temperature of the water is prevented, the temperature is kept constant in the time period from t4 to t5, the internal temperature and the external temperature of the water are uniform, and the water is in a supercooled and unfrozen state.
t 5-t 6: a rapid freezing phase. At this stage, the frequency of the compressor is increased, air with large refrigerating capacity is introduced from the freezing chamber, the air in the freezing chamber flows from bottom to top, the low-temperature air flow is directly guided to water, the water and the low-temperature air flow carry out forced convection heat exchange, the temperature balance of water molecules is destroyed, hydrolysis is carried out in a supercooled state, the water molecules are rapidly frozen, the freezing process synchronously and rapidly occurs inside and outside the water, and granular fine ice crystals are generated.
t6 to: and (5) a storage stage. When T is less than or equal to F, the frequency of the compressor is reduced, the temperature E of the temperature-variable chamber is maintained to be less than T and less than C, fine and uniform granular ice crystals are distributed inside and outside the ice, and the ice can be directly used without being held by an ice shaver.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.
Claims (9)
1. A control method of ice-sand making for controlling a refrigerator including a temperature-varying chamber (1), a refrigerating chamber (2), a freezing chamber (3), the refrigerating chamber (2) having a refrigerating chamber return air device (21), the freezing chamber (3) having a freezing chamber return air device (31), the refrigerating chamber return air device (21) being capable of controllably introducing an air flow in the refrigerating chamber (2) into the temperature-varying chamber (1), the freezing chamber return air device (31) being capable of controllably introducing an air flow in the freezing chamber (3) into the temperature-varying chamber (1), the control method comprising:
a pre-cooling stage, adjusting the compartment temperature of the temperature changing chamber (1) from an initial temperature T0 to a first preset temperature T1;
in the supercooling stage, the temperature of the room of the temperature changing chamber (1) is adjusted to a second preset temperature T2 from T1, so that the ice-making object enters a supercooling state;
a freezing stage, adjusting the compartment temperature of the temperature changing chamber (1) from T2 to a third preset temperature T3, so that the ice-making object is converted from a supercooling state to an icing state;
wherein T0 & gtT 1 & gtTd & gtT 2 & gtT 3, and Td is the freezing point temperature of the object to be made ice.
2. The control method according to claim 1,
the pre-cooling stage comprises a rapid cooling pre-cooling stage and a uniform cooling pre-cooling stage,
in the rapid cooling and precooling stage, the temperature of the compartment of the temperature-changing chamber (1) is adjusted from an initial temperature T0 to a fifth preset temperature T5;
in the stage of uniformly cooling and precooling, the temperature of the room of the temperature-variable chamber (1) is adjusted to a first preset temperature T1 from T5;
wherein T0 > T5 > T1.
3. The control method according to claim 2,
in the rapid cooling and precooling stage, the refrigerating chamber air return device (21) is controlled to be started to introduce the airflow in the refrigerating chamber (2) into the temperature-changing chamber (1); and in the uniform cooling and precooling stage, the freezing chamber air return device (31) is controlled to be started to introduce the airflow in the freezing chamber (3) into the temperature-changing chamber (1) and mix with the airflow introduced from the refrigerating chamber (2).
4. The control method according to claim 3,
when the freezing chamber air return device (31) is started, the running frequency of a compressor of the refrigerator is controlled to be a first frequency.
5. The control method according to claim 4,
when in the freezing stage, the running frequency of a compressor of the refrigerator is controlled to be a second frequency, the second frequency is higher than the first frequency, and the opening state of the freezing chamber air returning device (31) is maintained.
6. The control method according to claim 5,
when the ice-sand storage stage is in place, the refrigerator is controlled to have the running frequency of the compressor at a third frequency, and the third frequency is lower than the second frequency.
7. The control method according to claim 1,
the supercooling stage comprises a supercooling degree accumulation stage and a supercooling degree maintaining stage,
in the supercooling degree accumulation stage, the temperature of the room of the temperature changing chamber (1) is adjusted from a first preset temperature T1 to a second preset temperature T2;
in the supercooling degree keeping stage, keeping the room temperature of the temperature changing chamber (1) to be constant at a second preset temperature T2;
and/or the ice storage stage is further included, the temperature of the room of the temperature changing chamber (1) is adjusted to a fourth preset temperature T4 from T3, and Td is more than or equal to T4 and more than or equal to T2.
8. The control method according to claim 7,
the subcooling accumulation stage comprises a plurality of successive temperature reduction sub-stages.
9. The control method according to claim 1, characterized in that the refrigerating compartment air return device (21) is located in an adjacent area of the refrigerating compartment (2) and the variable temperature compartment (1), and the freezing compartment air return device (31) is located in an adjacent area of the variable temperature compartment (1) and the freezing compartment (3).
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| CN112503848A (en) * | 2020-12-03 | 2021-03-16 | 长虹美菱股份有限公司 | Control method for realizing ice sand making and storage based on variable-temperature chamber |
| CN114485041A (en) * | 2022-02-25 | 2022-05-13 | 珠海格力电器股份有限公司 | Refrigerator control method and refrigerator |
| CN114485043A (en) * | 2022-02-25 | 2022-05-13 | 珠海格力电器股份有限公司 | Quick-freezing control method of refrigerator and refrigerator |
| CN115289780B (en) * | 2022-07-29 | 2024-04-16 | 广东哈士奇制冷科技股份有限公司 | Control method, equipment and medium of refrigerating device for making icy slag beverage |
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