CN114688798B - Refrigerator and refrigeration control method thereof - Google Patents
Refrigerator and refrigeration control method thereof Download PDFInfo
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- CN114688798B CN114688798B CN202011638006.3A CN202011638006A CN114688798B CN 114688798 B CN114688798 B CN 114688798B CN 202011638006 A CN202011638006 A CN 202011638006A CN 114688798 B CN114688798 B CN 114688798B
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- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000005057 refrigeration Methods 0.000 title claims description 73
- 238000003860 storage Methods 0.000 claims abstract description 182
- 238000007710 freezing Methods 0.000 claims abstract description 49
- 230000008014 freezing Effects 0.000 claims abstract description 49
- 230000008859 change Effects 0.000 claims abstract description 16
- 235000013305 food Nutrition 0.000 abstract description 27
- 239000000463 material Substances 0.000 abstract description 11
- 238000001816 cooling Methods 0.000 description 19
- 239000013078 crystal Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 8
- 239000000696 magnetic material Substances 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000004321 preservation Methods 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002194 freeze distillation Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 241000238557 Decapoda Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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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
-
- 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
- F25D25/00—Charging, supporting, and discharging the articles to be cooled
- F25D25/02—Charging, supporting, and discharging the articles to be cooled by shelves
-
- 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
- F25D29/005—Mounting of control 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
- F25D2500/00—Problems to be solved
- F25D2500/06—Stock management
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The application provides a freezing control method of a refrigerator and the refrigerator. Wherein a storage box is arranged in a freezing storage room of the refrigerator, at least one group of electromagnetic coils is arranged outside the storage box, and the freezing control method comprises the following steps: detecting the open and closed states of the storage box; after determining that an opening and closing event occurs after the storage box is opened and then closed, acquiring internal temperature changes before the storage box is opened and after the storage box is closed; if the amplitude of the internal temperature change is greater than a first set threshold value, the storage box is started to refrigerate and the electromagnetic coil is electrified so as to generate a magnetic field in the storage box by utilizing the electromagnetic coil; and stopping energizing the electromagnetic coil after the internal temperature of the storage box is lower than a second set threshold value. The scheme of the application improves the quality of frozen storage and meets the storage quality requirement of users on precious food materials.
Description
Technical Field
The present application relates to a refrigeration and freezing storage device, and more particularly, to a refrigeration control method for a refrigerator and a refrigerator.
Background
The requirements of users on various functions of the refrigerator are not limited to prolonging the preservation time, and the preservation effect of stored objects is also more and more important. For food materials such as meat, fish and shrimp which need to be frozen, the problems of poor taste and darkening color caused by juice loss after freezing often occur.
In order to improve the quality of frozen stores, there are many improvements in the prior art, such as increasing the freezing speed of food by quick freezing or putting food into supercooled state, which require an increase in the refrigerating capacity of the refrigerator, and also result in an increase in the energy consumption of the refrigerator. Therefore, achieving more efficient improvement of frozen stock is a technical problem to be solved by refrigerator developers.
Theoretical studies have found that magnetic fields have a large effect on ice crystal formation during freezing. The field of refrigerators is also actively exploring to introduce a magnetic field into freezing preservation, however, the effect of magnetic field assisted freezing is not satisfactory when the magnetic field assisted freezing is actually applied in the refrigerator.
Disclosure of Invention
An object of the present application is to provide a freezing control method of a refrigerator and a refrigerator which effectively improve the amount of frozen storage.
A further object of the present application is to enable a reduction in the energy consumption of a refrigerator.
In particular, the present application provides a freezing control method of a refrigerator. Wherein a storage box is arranged in a freezing storage room of the refrigerator, at least one group of electromagnetic coils is arranged outside the storage box, and the freezing control method comprises the following steps: detecting the open and closed states of the storage box; after determining that an opening and closing event occurs after the storage box is opened and then closed, acquiring internal temperature changes before the storage box is opened and after the storage box is closed; if the amplitude of the internal temperature change is greater than a first set threshold value, the storage box is started to refrigerate and the electromagnetic coil is electrified so as to generate a magnetic field in the storage box by utilizing the electromagnetic coil; and stopping energizing the electromagnetic coil after the internal temperature of the storage box is lower than a second set threshold value.
Optionally, after the step of turning on the storage box to cool and energize the electromagnetic coil, the method further comprises: detecting a temperature at the electromagnetic coil; and after the temperature of the electromagnetic coil exceeds a third set threshold, stopping energizing the electromagnetic coil so as to avoid the electromagnetic coil from influencing refrigeration.
Optionally, after the step of turning on the storage box to cool and energize the electromagnetic coil, the method further comprises: detecting a temperature at the electromagnetic coil; and stopping energizing the electromagnetic coil after the temperature difference between the temperature of the electromagnetic coil and the internal temperature of the storage box is greater than a fourth set threshold value.
Optionally, after the step of starting the cooling of the storage box, the method further comprises: stopping refrigerating the storage box after the internal temperature of the storage box is lower than a fifth set threshold value; and the refrigeration control is carried out on the storage box according to the preset refrigeration starting condition and the preset refrigeration closing condition of the storage box so as to maintain the refrigeration storage environment of the storage box, and the fifth set threshold value is smaller than the second set threshold value.
Optionally, in the step of performing refrigeration control on the storage box according to the preset refrigeration starting condition and refrigeration closing condition of the storage box, the method further includes: the electromagnetic coil is electrified when the storage box is refrigerated by the start and stop device; or the electromagnetic coil is started to be electrified when the storage box is started to refrigerate, and the electromagnetic coil is stopped to be electrified before the storage box is stopped to refrigerate.
Optionally, in the step of performing refrigeration control on the storage box according to the preset refrigeration starting condition and refrigeration closing condition of the storage box, the method further includes: and turning on the power supply to the electromagnetic coil according to the set period.
Alternatively, the magnetic pole direction after each energization of the electromagnetic coil is configured to be opposite to the magnetic pole direction after the last energization.
Optionally, the two groups of electromagnetic coils are respectively arranged on two opposite side surfaces outside the storage box, and the directions of magnetic poles generated after the two groups of electromagnetic coils are electrified are set to be the same.
Optionally, the refrigerator is an air-cooled refrigerator, the back wall of the storage box is provided with an air inlet and an air return opening for connecting an air channel of the air-cooled refrigerator, and the step of opening the storage box for refrigerating comprises the following steps: opening the air inlet, and opening to blow the refrigerating air flow to the air inlet.
According to another aspect of the present application, there is also provided a refrigerator including: a box defining at least a refrigerated storage compartment; the storage box is arranged in the freezing storage compartment of the refrigerator, and at least one group of electromagnetic coils are arranged on the outer side of the storage box; and a controller including a memory and a processor, wherein a control program is stored in the memory, and the control program is used for realizing any one of the refrigeration control methods of the refrigerator when being executed by the processor.
According to the refrigerator and the freezing control method thereof, after an opening and closing event occurs in the storage box in the freezing storage compartment, the internal temperature change before the storage box is opened and after the storage box is closed is obtained, whether new food is put in or whether the food needs to be re-frozen is determined through the internal temperature change of the storage box, after the fact that the amplitude of the internal temperature change is larger than a first set threshold value (namely, when the food needs to be frozen), the storage box is opened to refrigerate and a magnetic field is generated through an electromagnetic coil, so that the food is frozen in the magnetic field environment, crystal nucleus growth of ice is inhibited, the crystal growth rate is higher than the migration rate of water molecules, the produced ice crystals are smaller, damage to cells is reduced, juice loss is avoided, better taste of the food is guaranteed, the freezing storage quality is improved, and the storage quality requirement of a user on precious food is met.
Furthermore, the refrigerator and the freezing control method thereof improve the opening and closing conditions of the electromagnetic field, and the magnetic field is generated in the period of mainly forming ice crystals, so that the use efficiency of the magnetic field is improved, on one hand, the influence of the magnetic field on other parts outside the storage box is avoided, and on the other hand, the energy consumption of the refrigerator is also improved.
Furthermore, the refrigerator and the freezing control method thereof can be regularly started during the normal refrigeration period of the storage box, so that the long-term freezing and fresh-keeping effects of the stored objects are ensured.
The above, as well as additional objectives, advantages, and features of the present application will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present application when read in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the application will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:
fig. 1 is a schematic perspective view of a refrigerator according to an embodiment of the present application;
fig. 2 is a schematic view of a storage box of a refrigerator according to an embodiment of the present application;
FIG. 3 is a schematic view of a magnetically permeable outer frame in a storage case of a refrigerator according to an embodiment of the present application;
FIG. 4 is a schematic view of an electromagnetic coil in a storage box of a refrigerator according to one embodiment of the present application;
FIG. 5 is a schematic view of a magnetic field formed in a storage case of a refrigerator according to an embodiment of the present application;
FIG. 6 is a schematic view of another magnetic field formed in a storage box of a refrigerator according to one embodiment of the present application;
fig. 7 is a block diagram of a control system of a refrigerator according to an embodiment of the present application;
fig. 8 is a schematic view of a freezing control method of a refrigerator according to an embodiment of the present application; and
fig. 9 is a schematic flowchart of a freezing control method of a refrigerator according to an embodiment of the present application.
Detailed Description
Fig. 1 is a schematic perspective view of a refrigerator 10 according to one embodiment of the present application. The refrigerator 10 of the present embodiment may generally include a cabinet 120, a door 110, and a refrigerating system (not shown). The housing 120 may define at least one open-front storage compartment, and typically a plurality of compartments, such as a refrigerated storage compartment, a frozen storage compartment, a variable temperature storage compartment, and the like. The number and function of particular storage compartments may be configured according to the needs in advance. The refrigerator 10 of the present embodiment should have at least a freezing compartment or a temperature changing compartment with a temperature reaching a freezing range (i.e., can be used to realize a freezing storage environment). The temperature range of the frozen stock may generally be set at-14 ℃ to-22 ℃.
The refrigerator 10 of this embodiment may be an air-cooled refrigerator, in which an air path system is disposed in the box 120, and the air blower is used to send the cooling air flow exchanged by the heat exchanger to the storage compartment through the air supply port, and then return to the air duct through the air return port. And refrigeration is realized. Since the refrigerator body 120, the door body 110 and the refrigeration system of such a refrigerator are well known and easy to implement by those skilled in the art, the description of the refrigerator body 120, the door body 110 and the refrigeration system is omitted herein below in order to not obscure and obscure the application.
A storage box 200 is arranged in the freezing storage compartment. The storage box 200 forms an independent closed frozen storage space, which can improve the storage quality of the frozen storage space by means of a magnetic field. Under the action of a magnetic field with certain intensity, the free path of water molecules can be limited in the freezing process, and the phenomenon of hydrogen bond breakage in the water molecular clusters is shown. As the crystal nucleus growth is inhibited, the growth rate of the crystal crystals is higher than the migration rate of water molecules, and the generated crystal crystals are smaller, so that the damage to cells is also small, the juice loss rate is reduced, and the nutrition and the taste of the food materials are better preserved. In addition, the magnetic field can shorten the freezing time and help to inhibit the number of microorganisms and bacteria.
Fig. 2 is a schematic view of a storage box 200 of the refrigerator 10 according to one embodiment of the present application. The storage case 200 may include: magnetic conductive outer frame 210, electromagnetic coil 230, etc.
Fig. 3 is a schematic view of a magnetic conductive outer frame 210 in a storage case 200 of the refrigerator 10 according to an embodiment of the present application. The magnetic conductive outer frame 210 is made of a magnetic material, and bosses 220 are formed on opposite inner walls thereof, respectively. The magnetic material may be a soft magnetic material or a hard magnetic material, for example, the soft magnetic material may be used, where the soft magnetic material is characterized by having a low coercivity and a high permeability, and the magnetically conductive outer frame 210 may be used to gather a magnetic field, so as to avoid the magnetic field from being released to the outer wall of the storage box 200, and avoid interference to other components outside the storage box 200 (such as magnetic attraction to other components).
At least one set of electromagnetic coils 230 is matched with the magnetic conductive outer frame 210 and is configured to generate a magnetic field after being electrified, and magnetic lines of force of the magnetic field penetrate through the inner space of the magnetic conductive outer frame 210 and then complete closed loop through the magnetic conductive outer frame 210.
In some preferred embodiments, the electromagnetic coils 230 may be in two groups. The magnetic conductive outer frame 210 may be a square frame, i.e. a square cylinder. The front end and the rear end of the square frame body are respectively provided with a through opening. As shown in fig. 3, in some embodiments, bosses 220 may be formed on the inside of the top and bottom walls of the rectangular frame. In other embodiments, the bosses 220 are formed on the inside of the two side walls of the rectangular frame. Considering the structure of the refrigerated storage compartment, the upper and lower longitudinal dimensions thereof are smaller than the left and right lateral dimensions, and the top and bottom walls are larger in size, so that it is advantageous to arrange the electromagnetic coil 230, and the present embodiment preferably forms the boss 220 on the inner sides of the top and bottom walls of the rectangular frame. The inner circumference of the coil is shaped to fit the outer circumference of the boss 220.
The cross section of the boss 220 may be square, circular or oval, and the boss 220 may be more conveniently matched with the structure of the case 120 when the square cross section is used. The inner circumferential shape of the electromagnetic coil 230 is adapted to the outer circumference of the boss 220, and is correspondingly provided in a square shape, a circular shape or an oval shape.
Fig. 4 is a schematic view of the electromagnetic coil 230 in the storage box 200 of the refrigerator 10 according to one embodiment of the present application. The electromagnetic coil 230 may be formed in a flat square shape and wound in a circumferential direction so that a magnetic pole direction of a magnetic field generated after the electromagnetic coil 230 is energized is perpendicular to the boss 220. The height of the boss 220 may be adapted to the thickness of the solenoid coil 230 such that the inner wall of the square frame in which the solenoid coil 230 is located is substantially flush to facilitate placement of the storage case. In other embodiments, the electromagnetic coil 230 may be provided in a flat elliptical ring shape or a circular ring shape.
To ensure uniform magnetic field strength, two sets of electromagnetic coils 230 may be employed in opposition. The two sets of electromagnetic coils 230 may be mirror images of each other and the resulting magnetic field pole directions are set to be the same. Fig. 5 and 6 are schematic views of magnetic fields formed in the storage box 200 of the refrigerator 10 according to an embodiment of the present application, respectively, with the drawer 242 hidden for illustrating the internal structure. The direction of the poles is also set so that the magnetic lines are oriented in the same direction. In some embodiments, both sets of electromagnetic coils 230 may change the direction of the magnetic poles by adjusting the direction of the current flow, but both sets of electromagnetic coils 230 are simultaneously transformed to create a magnetic field similar to that of fig. 5 or 6. The magnetic lines of force of the magnetic field penetrate through the inner space of the magnetic conductive outer frame 210, and then the magnetic conductive outer frame 210 completes the closed loop, so that uneven magnetic field distribution or influence on external components of the storage box 200 is avoided.
The magnetic conductive outer frame 210 is used for guiding the magnetic field generated by the electromagnetic coil 230, avoiding the non-uniformity of the magnetic field and affecting other components outside the storage box 200, and enabling the electromagnetic coil 230 to form a uniform magnetic field with sufficient strength to meet the requirements of improving the quality of frozen storage in the frozen storage space. Further, the magnetic conductive outer frame 210 also provides an assembly structure for the electromagnetic coil 230, reducing the occupied space, thereby improving the practicality.
The storage box 200 may form an independent sealed refrigerated storage space, thereby providing a better refrigerated storage environment for specific food materials.
The storage case 200 may include: an outer cylinder 241 and a drawer 242. The outer cylinder 241 is disposed in the magnetic conductive outer frame 210 and has a forward opening. A drawer 242 is drawably provided in the outer cylinder 241. The front panel of the drawer 242 may form a sealing structure with the outer cylinder 241. When the refrigerator 10 uses air cooling to perform refrigeration, the rear wall of the outer cylinder 241 is provided with an air inlet 243 and an air return 244, wherein the air inlet 243 is used for connecting an air duct air supply port of the refrigerator 10 or communicating with an evaporator (for example, communicating with the top area of the evaporator) of the refrigerator 10 so as to introduce a refrigeration airflow into the storage box; the return air opening 244 is used to connect to a return air opening of the air duct of the refrigerator 10 or to communicate with an evaporator of the refrigerator 10 (e.g., to a bottom region of the evaporator) to return the heat exchanged air flow to the return air duct or evaporator of the refrigerator 10. In some embodiments, the air inlet 243 and the air return 244 may be provided with dampers (not shown). The damper is controlled to be opened when refrigerating and blowing. The air inlet 243 and the air return 244 may be configured according to the air duct of the air-cooled refrigerator, the location and structure of the evaporator, and in other embodiments, the air return 244 may be disposed on the side wall of the outer tub 241.
The refrigerator 10 of the embodiment combines the magnetic field control of the electromagnetic coil 230 with refrigeration control, ensures food freezing in the magnetic field environment, and achieves the effects of fresh-keeping and freezing. Fig. 7 is a block diagram of a control system of the refrigerator 10 according to an embodiment of the present application, and the refrigerator 10 is further provided with a storage temperature sensor 250, a coil temperature sensor 260, a drawer opening and closing detector 270, and a controller 300.
The storage temperature sensor 250 is disposed in the outer cylinder 241 of the storage box 200 and is used to detect the temperature in the drawer 242. Coil temperature sensor 260 is disposed adjacent to the location of solenoid 230 and is configured to detect the temperature at solenoid 230, in some embodiments coil temperature sensor 260 may be disposed at solenoid 230 at the bottom of drawer 242. The drawer open/close detector 270 is configured to detect an open/close state of the drawer 242.
Since the electromagnetic coil 230 generates heat to some extent when generating a magnetic field. Therefore, in order to avoid the influence of the heat of the electromagnetic coil 230 on cooling, the electromagnetic coil 230 is further configured to power off the power when the temperature detected by the coil temperature sensor 260 exceeds a preset protection temperature, thereby achieving overheat protection.
The drawer open/close detector 270 is configured to detect an open/close state of the drawer 242. After drawer 242 is opened and then closed, it is possible to detect whether new food material is put in or whether the original food material needs to be re-frozen by means of storage temperature sensor 250. Then, the electromagnetic coil 230 is matched with the refrigerating system, so that magnetic field assisted refrigeration can be realized, and the refrigeration and fresh-keeping effects of food materials are improved.
The controller 300 includes a memory 310 and a processor 320. The memory 310 stores a control program 311, and the control program 311 is used to control the electromagnetic coil 230 and the refrigeration system when executed by the processor 320, thereby implementing the refrigeration control method of the refrigerator provided in this embodiment. And various sensors provide detection means for magnetic field control, so that the control requirement of a control method can be met.
Fig. 8 is a schematic view of a freezing control method of a refrigerator according to an embodiment of the present application, the freezing control method including:
step S802, detecting the open/close state of the storage box 200;
step S804, determining that an opening/closing event occurs in which the storage box 200 is closed after being opened;
step S806, acquiring the internal temperature change of the storage box 200 before and after being opened and closed, wherein the internal temperature change of the storage box 200 reflects the state of the stored food, and if the internal temperature change has a large amplitude, it is indicated whether the storage box 200 is put in new food or whether the temperature of the food has been raised and needs to be frozen again; if the magnitude of the internal temperature change is small, it is indicated that the food may still be in a frozen state.
Step S808, if the internal temperature change is greater than the first set threshold, the storage box 200 is opened to refrigerate and the electromagnetic coil 230 is electrified so as to generate a magnetic field in the storage box 200 by using the electromagnetic coil 230; the first set threshold may be set to 2-8 degrees celsius, which may be flexibly set according to the freezing set temperature. The electromagnetic coil 230 generates a magnetic field when the internal temperature change amplitude is larger than the first set threshold value, so that the food is affected by the magnetic field in the frozen process, and the fresh-keeping effect is improved. In addition, by setting the starting condition of the electromagnetic coil 230, on one hand, the energy consumption is reduced, and on the other hand, the influence of the magnetic field on other components outside the storage box 200 can be avoided.
In step S810, after the internal temperature of the storage box 200 is lower than the second set threshold, the electromagnetic coil 230 is stopped being energized. The second set threshold may be set to a temperature at which the food material completes freezing, for example, at-12 to-18 degrees celsius.
The electromagnetic coil 230 generates heat to some extent when generating a magnetic field. Therefore, in order to avoid the influence of the heat of the electromagnetic coil 230 on the cooling, that is, after the electromagnetic coil 230 is overheated, overheat protection is achieved by power failure.
One approach to overheat protection is: after the step of turning on the cooling of the magazine 200 and energizing the solenoid 230, it further comprises: detecting a temperature at the electromagnetic coil 230; after the temperature at the electromagnetic coil 230 exceeds the third set threshold, the energization of the electromagnetic coil 230 is stopped to avoid the electromagnetic coil 230 from affecting cooling. The third set threshold may be set to-2 to 0 degrees. This overheat protection scheme ensures that the solenoid 230 is protected once it has reached an excessive temperature.
An alternative to overheat protection is: the temperature at the solenoid 230 may also be detected after the steps of opening the cooling of the case 200 and energizing the solenoid 230; after the temperature difference between the temperature of the electromagnetic coil 230 and the internal temperature of the storage box 200 is greater than the fourth set threshold, the power supply to the electromagnetic coil 230 is stopped. The fourth set threshold may be set to 2-4 degrees celsius. Since the electromagnetic coil 230 is also located in the freezing compartment, the temperature difference between the temperature of the electromagnetic coil 230 and the temperature inside the storage box 200 can reflect the heating condition of the electromagnetic coil 230, so that the electromagnetic coil 230 can be prevented from affecting normal refrigeration.
After the step of turning on the cooling of the storage box 200, it further includes: after the internal temperature of the storage box 200 is lower than the fifth set threshold, stopping refrigerating the storage box 200; and the refrigeration control is performed on the storage box 200 according to the preset refrigeration starting condition and refrigeration closing condition of the storage box 200, so as to maintain the refrigeration storage environment of the storage box 200, wherein the fifth set threshold is smaller than the second set threshold. The fifth set threshold may be set according to a set temperature of the storage box 200, which may also be lower than a shutdown point temperature of normal freezing control, for example, may be set 2-4 degrees celsius lower than the set temperature. Since this refrigeration is performed after the storage box 200 is opened, the fifth set threshold is set lower, supercooling can be achieved to a certain extent, and the frozen storage quality can be improved. The cooling start condition and the cooling stop condition may be set according to the set temperature of the storage box 200 as well, and cooling is started when the cooling start temperature is higher and stopped when the cooling stop temperature is lower.
After the magnetic field assisted refrigeration is completed, the normal refrigeration control of the storage box is restored, namely, the storage box 200 is subjected to refrigeration control according to the preset refrigeration starting condition and refrigeration closing condition of the storage box 200. The step of performing refrigeration control on the storage box 200 according to the preset refrigeration start condition and refrigeration close condition of the storage box 200 may also use magnetic field to assist in refrigeration, so as to avoid the decrease of the storage material amount caused by the regeneration of part of ice crystals. For example, the electromagnetic coil 230 may be energized while the storage box 200 is being cooled, i.e., the magnetic field is being simultaneously cooled. Another alternative is: the energizing of the solenoid 230 is initiated when the cooling of the case 200 is initiated and the energizing of the solenoid 230 is stopped before the cooling of the case 200 is stopped, i.e. the magnetic field is initiated only at the beginning of the cooling. Through practical tests, the storage quality of the magnetic field started only in the beginning stage of refrigeration is not obviously reduced when the magnetic field is started and stopped simultaneously with refrigeration.
In the long-term freezing process, the other method for starting the magnetic field comprises the following steps: in the process of performing the refrigeration control on the storage box 200 according to the preset refrigeration starting condition and the refrigeration closing condition of the storage box 200, the electromagnetic coil 230 is turned on according to the set period, that is, the electromagnetic coil 230 is periodically started.
In another embodiment, the pole direction of the solenoid 230 after each energization may be configured to be opposite to the pole direction after the last energization. Through the alternation of the magnetic pole directions, the ice crystal generation condition can be changed to a certain extent, and a better effect is achieved. The alternation of the magnetic pole direction can be achieved by adjusting the direction of the energizing current of the electromagnetic coil 230.
When applied to an air-cooled refrigerator, the step of opening the cooling of the storage box 200 may include: opening the air inlet and opening blowing a flow of refrigerant to the air inlet 243.
Fig. 9 is a schematic flowchart of a freezing control method of a refrigerator according to an embodiment of the present application. The flow of the present embodiment is a specific application example of the freezing control method of the refrigerator, in which the execution sequence of part of the steps can be adjusted. The process may include:
step S902, detecting an open/closed state of the storage box 200;
step S904, determining that the storage box 200 is closed after being opened, that is, determining whether an opening/closing event occurs in the storage box 200;
in step S906, the internal temperature change before the storage box 200 is opened and after the storage box 200 is closed is obtained, and it is determined whether the amplitude of the internal temperature change is greater than a first set threshold, that is, it is determined whether new food is put into the storage box 200 or whether the temperature of the food has risen and needs to be re-frozen, the first set threshold may be set to 2-8 ℃, and if the amplitude of the internal temperature change is smaller, the conventional refrigeration control of the frozen storage may be performed, that is, the refrigeration control is performed according to the set start-up temperature threshold and the shutdown temperature threshold. .
Step S908, the refrigeration is started, the air is supplied to the storage box 200, and simultaneously, the electromagnetic coil 230 is electrified to generate a magnetic field in the storage box 200, and the magnetic field is utilized to assist in refrigeration;
step S910, continuously detecting the internal temperature of the storage box 200 and the temperature at the electromagnetic coil 230;
in step S912, it is determined whether the heat generated by the electromagnetic coil 230 exceeds the limit, i.e. whether the heat generated by the electromagnetic coil 230 affects normal cooling. The judgment basis of overrun may include: the temperature at the solenoid 230 exceeds a preset third set threshold (which may be set, for example, -2 to 0 degrees celsius); or the temperature at the solenoid 230 and the internal temperature of the magazine 200 differ by more than a fourth set threshold (which may be set at 2 to 4 degrees celsius, for example).
Step S914, determining whether the internal temperature of the storage box 200 is lower than a second set threshold (e.g. can be set to-12 to-18 ℃), i.e. determining whether the freezing phase is completed;
step S916, stopping energizing the electromagnetic coil 230;
in step S920, it is determined that the internal temperature of the storage box 200 is lower than a fifth set threshold, which may be set according to the set temperature of the storage box 200, and may also be lower than the shutdown point temperature of the normal freezing control, for example, may be set to be 2-4 degrees celsius lower than the set temperature.
Step S922, stopping refrigerating the storage box 200, and recovering normal refrigeration control of the storage box 200;
in step S924, the magnetic field is started according to a setting policy, which may include: the magnetic field is started and stopped simultaneously with refrigeration, the magnetic field is started only in the starting stage of refrigeration, or the magnetic field is started periodically.
The refrigerator 10 and the freezing control method thereof of the embodiment enable food materials to freeze in a magnetic field environment, inhibit crystal nucleus growth of ice crystals, reduce damage to cells, avoid juice loss, ensure better taste of the food materials, improve frozen storage quality, meet the storage quality requirements of users on precious food materials, and improve the use efficiency of a magnetic field through optimization of the control method, on one hand, avoid influence of the magnetic field on other components outside the storage box 200, and on the other hand, improve the energy consumption of the refrigerator.
By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the application have been shown and described herein in detail, many other variations or modifications of the application consistent with the principles of the application may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the application. Accordingly, the scope of the present application should be understood and deemed to cover all such other variations or modifications.
Claims (9)
1. A freezing control method of a refrigerator, a storage box is arranged in a freezing storage compartment of the refrigerator, at least one group of electromagnetic coils are arranged outside the storage box, and the freezing control method comprises the following steps:
detecting the open and closed states of the storage box;
after determining that an opening and closing event occurs after the storage box is opened and then closed, acquiring internal temperature changes before the storage box is opened and after the storage box is closed;
if the amplitude of the internal temperature change is larger than a first set threshold value, starting to refrigerate the storage box and electrifying the electromagnetic coil so as to generate a magnetic field in the storage box by utilizing the electromagnetic coil;
stopping energizing the electromagnetic coil after the internal temperature of the storage box is lower than a second set threshold value;
after the step of starting the refrigeration of the storage box and the energizing of the electromagnetic coil, the method further comprises the following steps:
detecting a temperature at the electromagnetic coil;
and stopping energizing the electromagnetic coil after the temperature difference between the temperature of the electromagnetic coil and the internal temperature of the storage box is larger than a fourth set threshold value.
2. The refrigeration control method of a refrigerator according to claim 1, wherein,
after the step of starting the refrigeration of the storage box and the energizing of the electromagnetic coil, the method further comprises the following steps:
detecting a temperature at the electromagnetic coil;
and stopping energizing the electromagnetic coil after the temperature of the electromagnetic coil exceeds a third set threshold value so as to avoid the electromagnetic coil from influencing refrigeration.
3. The refrigeration control method of a refrigerator according to claim 1, wherein,
after the step of starting the refrigeration of the storage box, the method further comprises the following steps:
stopping refrigerating the storage box after the internal temperature of the storage box is lower than a fifth set threshold value; and the refrigeration control is carried out on the storage box according to the refrigeration starting condition and the refrigeration closing condition preset by the storage box so as to maintain the refrigeration storage environment of the storage box, wherein the fifth set threshold value is smaller than the second set threshold value.
4. The freezing control method of a refrigerator according to claim 3, wherein,
the step of performing refrigeration control on the storage box according to the preset refrigeration starting condition and refrigeration closing condition of the storage box further comprises the following steps:
the electromagnetic coil is electrified when the storage box is refrigerated by the start-stop device; or alternatively
And when the storage box is started to refrigerate, starting to electrify the electromagnetic coil, and before stopping refrigerate the storage box, stopping electrifying the electromagnetic coil.
5. The freezing control method of a refrigerator according to claim 3, wherein,
the step of performing refrigeration control on the storage box according to the preset refrigeration starting condition and refrigeration closing condition of the storage box further comprises the following steps:
and turning on the power supply to the electromagnetic coil according to a set period.
6. The freezing control method of a refrigerator according to claim 4 or 5, wherein,
the magnetic pole direction of the electromagnetic coil after each power-on is configured to be opposite to the magnetic pole direction after the last power-on.
7. The refrigeration control method of a refrigerator according to claim 1, wherein,
the two groups of electromagnetic coils are respectively arranged on two opposite side surfaces outside the storage box, and the directions of magnetic poles generated after the two groups of electromagnetic coils are electrified are identical.
8. The refrigeration control method of a refrigerator according to claim 1, wherein,
the refrigerator is an air-cooled refrigerator, an air inlet and an air return opening which are used for connecting an air channel of the air-cooled refrigerator are formed in the rear wall of the storage box, and
the step of opening the storage box for refrigerating comprises the following steps: opening the air inlet, and opening to blow the refrigerating air flow to the air inlet.
9. A refrigerator, characterized by comprising:
a box defining at least a refrigerated storage compartment;
the storage box is arranged in the freezing storage compartment of the refrigerator, and at least one group of electromagnetic coils are arranged on the outer side of the storage box; and
a controller comprising a memory and a processor, the memory having stored therein a control program which, when executed by the processor, is for implementing the refrigeration control method of the refrigerator according to any one of claims 1 to 8.
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| CN202011638006.3A CN114688798B (en) | 2020-12-31 | 2020-12-31 | Refrigerator and refrigeration control method thereof |
| PCT/CN2021/130610 WO2022142780A1 (en) | 2020-12-31 | 2021-11-15 | Freezing control method for refrigerator, and refrigerator |
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| CN202011638006.3A CN114688798B (en) | 2020-12-31 | 2020-12-31 | Refrigerator and refrigeration control method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004028559A (en) * | 2002-05-10 | 2004-01-29 | Glocal:Kk | Freezer |
| CN111043826A (en) * | 2018-10-11 | 2020-04-21 | 青岛海尔股份有限公司 | Refrigerating and freezing device and control method thereof |
| CN111043829A (en) * | 2018-10-11 | 2020-04-21 | 青岛海尔股份有限公司 | Refrigerating and freezing device and control method thereof |
| CN111536748A (en) * | 2020-04-24 | 2020-08-14 | 海信（山东）冰箱有限公司 | Refrigerator and control method thereof |
| CN111623574A (en) * | 2020-05-12 | 2020-09-04 | 珠海格力电器股份有限公司 | Freezing method and freezing equipment |
-
2020
- 2020-12-31 CN CN202011638006.3A patent/CN114688798B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004028559A (en) * | 2002-05-10 | 2004-01-29 | Glocal:Kk | Freezer |
| CN111043826A (en) * | 2018-10-11 | 2020-04-21 | 青岛海尔股份有限公司 | Refrigerating and freezing device and control method thereof |
| CN111043829A (en) * | 2018-10-11 | 2020-04-21 | 青岛海尔股份有限公司 | Refrigerating and freezing device and control method thereof |
| CN111536748A (en) * | 2020-04-24 | 2020-08-14 | 海信（山东）冰箱有限公司 | Refrigerator and control method thereof |
| CN111623574A (en) * | 2020-05-12 | 2020-09-04 | 珠海格力电器股份有限公司 | Freezing method and freezing equipment |
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