CN117190573A - Magnetic field fresh-keeping refrigerator and refrigeration control method thereof - Google Patents
Magnetic field fresh-keeping refrigerator and refrigeration control method thereof Download PDFInfo
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- CN117190573A CN117190573A CN202210605316.8A CN202210605316A CN117190573A CN 117190573 A CN117190573 A CN 117190573A CN 202210605316 A CN202210605316 A CN 202210605316A CN 117190573 A CN117190573 A CN 117190573A
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 224
- 238000000034 method Methods 0.000 title claims abstract description 57
- 238000004321 preservation Methods 0.000 claims abstract description 85
- 238000001816 cooling Methods 0.000 claims abstract description 39
- 230000008569 process Effects 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims description 8
- 239000003507 refrigerant Substances 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 238000004781 supercooling Methods 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 238000009413 insulation Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 235000013305 food Nutrition 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 238000005192 partition Methods 0.000 description 8
- 230000004888 barrier function Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000007710 freezing Methods 0.000 description 5
- 230000008014 freezing Effects 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 230000005358 geomagnetic field Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
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- 239000011232 storage material Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
-
- 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
- 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
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention provides a magnetic field fresh-keeping refrigerator and a refrigeration control method thereof, wherein the magnetic field fresh-keeping refrigerator comprises: a case defining a storage compartment therein; a refrigeration air duct for providing refrigeration air flow to the storage compartment; a refrigeration system for forming a flow of refrigeration gas; the magnetic field fresh-keeping device is arranged in the storage room, and is provided with an air inlet and an air return opening which are used for communicating the refrigerating air duct so as to air-cool the magnetic field fresh-keeping space. The refrigeration control method comprises the following steps: judging whether the state of the magnetic field fresh-keeping space meets a preset quick refrigeration starting condition or not; if yes, carrying out quick refrigeration on the magnetic field fresh-keeping device until the state of the magnetic field fresh-keeping space meets the preset quick refrigeration ending condition; after the rapid refrigeration of the magnetic field preservation device is completed, performing one or more stages of transitional refrigeration processes on the magnetic field preservation device; after the transitional refrigeration is completed, the refrigeration system is controlled to perform normal refrigeration on the magnetic field fresh-keeping device. The scheme realizes the rapid and stable refrigeration and cooling of the magnetic field fresh-keeping device.
Description
Technical Field
The invention relates to refrigeration and freezing equipment, and particularly provides a magnetic field fresh-keeping refrigerator and a refrigeration control method thereof.
Background
It has now been found that the magnetic field can inhibit the growth of microorganisms and mold and extend the shelf life of the food material. Therefore, the magnetic field can be used for assisting in storing food materials, and the purpose of prolonging the storage period of the food materials is achieved.
To achieve fresh-keeping storage, the magnetic field needs to be matched with the storage temperature. Through practical tests, the storage temperature is preferably kept at 5-8 ℃ under the state of no freezing and fresh-keeping storage, and the cooling speed is also required to be stable, so that the temperature fluctuation is reduced as much as possible. On the other hand, after the magnetic field fresh-keeping device is opened or a new stored object is put in, the magnetic field fresh-keeping device needs to be quickly cooled down to reduce the storage temperature to be within a preset range.
However, in order to arrange magnetic field components, the magnetic field preservation device has a more complex structure than a common storage device, and how to realize rapid and stable refrigeration and cooling of the magnetic field preservation device becomes a problem which needs to be solved in the prior art.
Disclosure of Invention
The invention aims to provide a magnetic field fresh-keeping refrigerator with a magnetic field fresh-keeping device, which can quickly and stably cool down.
A further object of the present invention is to make the temperature of the fresh-keeping space of the magnetic field fresh-keeping device uniform.
In order to achieve the above object, the present invention provides a refrigeration control method of a magnetic field fresh-keeping refrigerator, the magnetic field fresh-keeping refrigerator comprising: a case defining a storage compartment therein; a refrigeration air duct for providing refrigeration air flow to the storage compartment; a refrigeration system for forming a flow of refrigeration gas; the magnetic field fresh-keeping device is arranged in the storage room, the magnetic field fresh-keeping device is provided with an air inlet and an air return opening which are used for communicating a refrigeration air duct so as to introduce refrigeration air flow to refrigerate the magnetic field fresh-keeping space in the storage room, and the refrigeration control method comprises the following steps:
judging whether the state of the magnetic field fresh-keeping space meets a preset quick refrigeration starting condition or not;
if yes, controlling the refrigerating system to rapidly refrigerate the magnetic field fresh-keeping device until the state of the magnetic field fresh-keeping space meets the preset rapid refrigeration ending condition;
after the refrigerating system completes the rapid refrigeration of the magnetic field preservation device, controlling the refrigerating system to perform one or more stages of transitional refrigeration processes on the magnetic field preservation device;
after the refrigerating system finishes the transitional refrigeration of the magnetic field fresh-keeping device, the refrigerating system is controlled to normally refrigerate the magnetic field fresh-keeping device.
Optionally, the process of the refrigeration system for rapidly refrigerating the magnetic field preservation device is configured to: the refrigeration system continues to provide a flow of refrigeration gas to the magnetic field preservation apparatus at a high refrigeration load.
Optionally, the magnetic field fresh-keeping device is provided with a surrounding air channel which is formed from the air inlet, surrounds the fresh-keeping space and returns to the air return port; and a first temperature detecting member installed in the surrounding air duct; and the step of judging whether the state of the magnetic field fresh-keeping space meets the preset quick refrigeration starting condition comprises the following steps: judging whether the first temperature value detected by the first temperature detection component is greater than or equal to a first temperature threshold value, if so, judging that the state of the magnetic field fresh-keeping space meets the quick refrigeration starting condition.
Optionally, the first temperature detecting component is mounted at an upstream section of the air flow in the surrounding air duct, and the magnetic field preservation device further includes: a second temperature detecting member installed at a downstream section of the air flow in the surrounding air duct; the rapid cooling end conditions include: the first temperature value is smaller than or equal to a second temperature threshold value and/or the second temperature value detected by the second temperature detecting component is smaller than or equal to a third temperature threshold value, the second temperature threshold value is smaller than the first temperature threshold value, and the third temperature threshold value is smaller than the second temperature threshold value.
Optionally, the supercooling process includes a plurality of stages, and the step of controlling the refrigerating system to perform the supercooling process of the plurality of stages to the magnetic field preservation apparatus includes:
In each stage, if the first temperature value is larger than or equal to a refrigeration starting temperature threshold value corresponding to the stage, controlling the starting of a refrigeration system, and providing refrigeration air flow for the magnetic field fresh-keeping device in a normal refrigeration load state; if the first temperature value is smaller than the refrigerating stop temperature threshold value corresponding to the stage, controlling the refrigerating system to stop providing refrigerating air flow to the magnetic field fresh-keeping device;
and after the number of times of controlling the refrigerating system to stop providing the refrigerating airflow to the magnetic field fresh-keeping device exceeds a preset number of times threshold, or after the second temperature value is smaller than or equal to the stage temperature threshold of the stage, entering transitional refrigeration of the next stage.
Optionally, as refrigeration proceeds, the refrigeration shutdown temperature threshold and the refrigeration startup temperature threshold in the later transitional refrigeration stage are respectively smaller than the refrigeration shutdown temperature threshold and the refrigeration startup temperature threshold in the previous transitional refrigeration stage; the stage temperature threshold in the subsequent transitional refrigeration stage is less than the stage temperature threshold in the previous transitional refrigeration stage.
Optionally, in the process of performing the transitional refrigeration of the last stage of the magnetic field preservation device by the refrigeration system, if the number of times of stopping providing the refrigeration air flow to the magnetic field preservation device by the refrigeration system exceeds a preset number of times threshold, or after the second temperature value is less than or equal to the stage temperature threshold of the last stage, the step of controlling the refrigeration system to perform the normal refrigeration of the magnetic field preservation device is performed.
Optionally, the refrigeration load and the size of the refrigeration airflow of the refrigeration system in the normal refrigeration load state are respectively smaller than the refrigeration load and the size of the refrigeration airflow of the refrigeration system in the high refrigeration load state.
According to another aspect of the present invention, there is also provided a magnetic field fresh-keeping refrigerator including: a case defining a storage compartment therein; the refrigerating air duct is used for providing refrigerating air flow for the storage space; a refrigeration system for forming a refrigerant gas stream; the magnetic field fresh-keeping device is arranged in the storage room and is provided with an air inlet and a return air inlet which are used for communicating a refrigerating air duct so as to introduce refrigerating air flow to refrigerate the magnetic field fresh-keeping space in the storage room; the refrigeration controller comprises a memory and a processor, wherein the memory stores a machine executable program, and the machine executable program realizes the refrigeration control method of the magnetic field fresh-keeping refrigerator according to any one of the above when being executed by the processor.
Optionally, the magnetic field fresh-keeping device is provided with an air inlet and an air return opening which are used for communicating the refrigeration air channel, and a surrounding air channel which starts from the air inlet and returns to the air return opening after surrounding the fresh-keeping space is formed; and the magnetic field fresh-keeping refrigerator includes: the first temperature detection component is arranged at an upstream section of the air flow in the surrounding air duct, and the detected temperature value is recorded as a first temperature value; the second temperature detection part is arranged at the downstream section of the airflow in the surrounding air duct, and the detected temperature value is recorded as a second temperature value.
Based on the foregoing, it can be appreciated by those skilled in the art that in the foregoing technical solution of the present invention, the magnetic field preservation device is disposed in a storage compartment of the magnetic field preservation refrigerator, and the quality of the storage is improved by using the magnetic field. The state of the magnetic field fresh-keeping space meets the preset quick refrigeration starting condition, the refrigeration system carries out quick refrigeration on the magnetic field fresh-keeping device, and under the condition that the magnetic field fresh-keeping space needs quick refrigeration, the quick refrigeration temperature is reduced, so that the quick refrigeration requirement of the magnetic field fresh-keeping device after being opened or a new storage is put in is met. After the refrigerating system completes the rapid refrigerating of the magnetic field fresh-keeping device, the refrigerating system is controlled to perform one or more stages of transitional refrigerating processes on the magnetic field fresh-keeping device. And the temperature drop speed is slowed down by utilizing the transitional refrigeration process after the rapid refrigeration technology, so that the rapid fluctuation of the temperature is avoided. The scheme of the invention avoids temperature fluctuation of the fresh-keeping space, integrates the effects of temperature and magnetic field, and improves the fresh-keeping effect on foods in the fresh-keeping space.
Furthermore, the magnetic field fresh-keeping refrigerator and the refrigeration control method thereof, provided by the invention, utilize a plurality of temperature detection components as the control basis, accurately acquire the temperature in the magnetic field fresh-keeping device, and improve the control accuracy.
Further, the magnetic field fresh-keeping refrigerator and the refrigeration control method thereof of the invention pointedly formulate corresponding control strategies and start-stop conditions for rapid refrigeration, transitional refrigeration and normal refrigeration, effectively realize control targets, ensure that the temperature of fresh-keeping space is more uniform and ensure that the stored material quantity is more balanced.
The above, as well as additional objectives, advantages, and features of the present invention will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present invention when read in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solution of the present invention, some embodiments of the present invention will be described hereinafter with reference to the accompanying drawings. It will be understood by those skilled in the art that components or portions thereof identified in different drawings by the same reference numerals are identical or similar; the drawings of the invention are not necessarily to scale relative to each other.
In the accompanying drawings:
FIG. 1 is a schematic view of a magnetic field fresh keeping refrigerator according to one embodiment of the invention;
FIG. 2 is a schematic view of a magnetic field preservation apparatus in a magnetic field preservation refrigerator according to an embodiment of the present invention;
FIG. 3 is a schematic view of the magnetic field preservation apparatus shown in FIG. 2 from another view angle;
FIG. 4 is a side sectional view of a magnetic field preservation apparatus in a magnetic field preservation refrigerator according to an embodiment of the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 4 at A;
FIG. 6 is a partial enlarged view at B in FIG. 4;
FIG. 7 is a schematic view of a top section of a surrounding air duct of a magnetic field preservation device in a magnetic field preservation refrigerator according to an embodiment of the present invention;
FIG. 8 is an exploded view of components of a magnetic field preservation apparatus in a magnetic field preservation refrigerator according to an embodiment of the present invention;
FIG. 9 is a schematic view of an air guide of a magnetic field preservation apparatus in a magnetic field preservation refrigerator according to an embodiment of the present invention;
FIG. 10 is a schematic view of an air duct of a magnetic field preservation device in a magnetic field preservation refrigerator according to an embodiment of the present invention;
FIG. 11 is a system block diagram of a control assembly of a magnetic field preservation apparatus in a magnetic field preservation refrigerator according to one embodiment of the present invention;
fig. 12 is a schematic diagram of a refrigerating control method of a magnetic field fresh-keeping refrigerator according to an embodiment of the present invention;
fig. 13 is a flowchart of an alternative implementation of a refrigeration control method of a magnetic field fresh-keeping refrigerator according to an embodiment of the present invention.
Detailed Description
It should be understood by those skilled in the art that the embodiments described below are only some embodiments of the present invention, but not all embodiments of the present invention, and the some embodiments are intended to explain the technical principles of the present invention and are not intended to limit the scope of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive effort, based on the embodiments provided by the present invention, shall still fall within the scope of protection of the present invention.
It should be noted that, in the description of the present invention, terms such as "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate directions or positional relationships, which are based on the directions or positional relationships shown in the drawings, are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "primary," and "secondary" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, and can also be communicated with the inside of two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
FIG. 1 is a schematic view of a magnetic field fresh keeping refrigerator according to one embodiment of the invention; the magnetic field fresh-keeping refrigerator 10 may be a refrigerator, and includes: a cabinet 110, a door 120, and a refrigeration system (not shown). The housing 110 may define at least one open-front storage compartment 130 therein, typically a plurality of such compartments as refrigerated storage compartments, frozen storage compartments, variable temperature storage compartments, and the like. The number and function of the particular storage compartments 130 may be configured according to the needs in advance.
The magnetic field fresh refrigerator 10 can use an air cooling refrigeration mode to refrigerate the storage compartment 130. I.e., a cooling air duct for supplying cooling air to the storage compartment 130 is provided in the case 110. The refrigeration system is used to form a flow of refrigeration gas, which may include a wind path system and a compression refrigeration system. The air path system uses the blower 160 to send the refrigerant air flow exchanged by the heat exchanger 150 (evaporator) of the compression refrigeration system to the storage compartment 130 through the air supply port, and then returns to the air path through the air return port 232. And refrigeration is realized. In some embodiments, the back of the storage compartment 130 is provided with a cooling air duct 140 for providing cooling air flow, and the heat exchanger 150 may be disposed in the cooling air duct 140 to exchange heat with the air flow flowing through. A fan 160 is disposed in the cooling duct 140 to promote the circulating cooling air flow.
The number of the storage compartments may be plural, and at least one of the storage compartments is provided with the magnetic field preservation device 20. One skilled in the art may configure one refrigeration system and one air path for each storage compartment, for example, one heat exchanger 150 may be configured for one storage compartment, or one heat exchanger 150 may be configured for two or more storage compartments, as needed.
The heat exchanger 150 (evaporator) is part of a compression refrigeration system that utilizes a compression phase change cycle of refrigerant in a compressor, condenser, evaporator, and throttling device to effect heat transfer.
Since the refrigerator body, the door body and the refrigerating system of the refrigerator are all well known and easy to be realized by those skilled in the art, those skilled in the art can select the refrigerating system according to the needs, and the refrigerator body 110, the door body 120 and the refrigerating system are not described in detail in order not to obscure and obscure the application.
The magnetic field preservation device 20 is disposed in one storage compartment 130 and is provided with a magnetic field assembly for applying a magnetic field to the preservation space 23 inside itself. The magnetic field component can use permanent magnetic components or electromagnetic components, namely electromagnetic coils and permanent magnets to generate magnetic fields. In some embodiments, the magnetic field may also be generated using a combination of electromagnetic coils, permanent magnets, and magnetic field components of the electromagnetic components may be preferred in view of the structural dimensions and adjustability of the magnetic field.
The magnetic field fresh-keeping device 20 is provided with an air inlet and an air return opening which are used for communicating the refrigerating air duct 140 so as to introduce refrigerating air flow to refrigerate the magnetic field fresh-keeping space inside the magnetic field fresh-keeping device.
Fig. 2 is a schematic view of a magnetic field preservation apparatus 20 in a magnetic field preservation refrigerator 10 according to an embodiment of the present invention; fig. 3 is a schematic view of the magnetic field preservation apparatus 20 shown in fig. 2 from another view angle. Fig. 4 is a side sectional view of the magnetic field preservation apparatus 20 in the magnetic field preservation refrigerator 10 according to one embodiment of the present invention. FIG. 5 is an enlarged view of a portion of FIG. 4 at A; fig. 6 is a partial enlarged view at B in fig. 4. The magnetic field fresh-keeping device 20 is provided with an air inlet 231 and an air return opening 232 which are used for communicating the refrigerating air duct 140 so as to introduce refrigerating air flow to refrigerate the magnetic field fresh-keeping space 23 inside the magnetic field fresh-keeping device. The magnetic field fresh-keeping device 20 is provided with an air inlet 231 and an air return opening 232 which are used for communicating the refrigeration air duct 140, and forms a surrounding air duct which starts from the air inlet 231, surrounds the fresh-keeping space 23 and returns to the air return opening 232.
The magnetic field preservation device 20 may be provided as a drawer, for example, the magnetic field preservation device 20 may include a tub 22, a drawer 21. The rear part of the tub 22 is formed with an air inlet 231 and an air return 232 communicating with the cooling duct 140. The drawer 21 is drawably arranged in the barrel body 22, and a fresh-keeping space 23 is defined in the drawer 21, namely, the fresh-keeping space 23 in the drawer 21 can be controlled by a magnetic field and temperature, so that the fresh-keeping function of the magnetic field is realized.
The surrounding air channel enters the magnetic field fresh-keeping device 20 from the air inlet 231 at the rear end of the top of the magnetic field fresh-keeping device 20, passes through the top wall 221 of the barrel body 22, enters the top end of the front baffle 215 of the drawer 21, passes through the front baffle 215 of the drawer 21, enters the space below the drawer bottom plate from the bottom, and returns to the air return opening 232 at the rear wall 224 of the barrel body 22, thereby completing the air flow circulation. The section in which the surrounding air duct passes through the top wall 221 of the tub 22, i.e. the section at the top of the magnetic field preservation device 20, is referred to as the top section 241. The section of the front barrier 215 surrounding the air duct passing through the drawer 21, i.e. the section located at the front of the magnetic field preservation device 20, is referred to as the front section 242. The section of the air duct surrounding the space below the drawer bottom, i.e. the section at the bottom of the magnetic field preservation device 20, is called the bottom section 243. The surrounding air duct forms an air path surrounding the fresh-keeping space 23 from front to back, thereby effectively realizing uniform cooling.
That is, the surrounding duct includes a top section 241 located at the top wall 221 of the tub 22, a front section 242 located at the front baffle 215 of the drawer 21, and a bottom section 243 located below the drawer 21, and the air flow enters the top section 241 from the air inlet 231, then flows through the front section 242 and the bottom section 243, and then enters the air return 232.
The top wall 221 of the tub 22 may include: drawer top 211, shell plate 212, top insulating panel 213. The top wall 221 of the tub 22 is sequentially from top to bottom: an outer shell plate 212, a top heat insulating plate 213 and a drawer top cover 211.
The return air inlet 232 may be provided at the middle of the rear wall 224 of the tub 22. The top end of the rear wall 224 extends obliquely to the rear end of the top wall 221 of the tub 22, and the air inlet 231 is provided on the obliquely extending surface. The positions of the air inlet 231 and the air return opening 232 enable the magnetic field fresh-keeping device 20 to be matched with the air channel of the magnetic field fresh-keeping refrigerator 10 more smoothly, and the air supply efficiency is improved. In addition, the air inlet 231 is arranged at the top end of the rear side of the drawer 21 and is obliquely arranged, so that the occupation of the fresh-keeping space 23 by the air supply structure is reduced, and the structure is more compact and effective.
The drawer top 211 is opposite to the top opening of the drawer 21 for closing the top space of the fresh space 23. The outer shell 212 is disposed above the drawer top 211 with a first space from the drawer top 211. The top heat shield 213 is disposed in the first space, and the space between the top heat shield 213 and the drawer top cover 211 forms a top section 241 surrounding the air duct through the top wall 221 of the tub 22. The drawer top 211 is further provided with a plurality of through holes so that the fresh-keeping space 23 communicates with the top section 241 by means of the through holes. The aperture of the through hole may be set smaller so that the refrigerant gas flow uniformly enters the fresh-keeping space 23, avoiding direct blowing of the stored material in the fresh-keeping space 23.
The barrel 22 can be used as an inner barrel which is spliced in an up-down or left-right split manner for simple forming and processing, and can be fixed by a special fastening buckle or screw and the like, and also can be used as an integrally formed barrel. The inner side of the side wall of the barrel body 22 is provided with a corresponding drawer 21 mounting structure, a sliding rail or a slideway.
The tub 22 is provided with heat insulation members, such as a top heat insulation plate 213, a middle partition 2152, a bottom heat insulation plate, and a rear wall heat insulation plate, on the outside wind surrounding the wind channel, so that the cooling capacity of the cooling air flow is prevented from being dispersed, and the cooling efficiency is improved.
Fig. 7 is a schematic view of a top section 241 of a surrounding air duct of the magnetic field preservation device 20 in the magnetic field preservation refrigerator 10 according to an embodiment of the present invention. The side of the top heat insulation plate 213 facing the drawer top cover 211 is further formed with a plurality of air guide ribs 2131 to guide the air flow in the top section 241 by the air guide ribs 2131 such that the air flow uniformly flows through the top section 241.
Fig. 8 is an exploded view of a drawer 21 of the magnetic field preservation apparatus 20 of the magnetic field preservation refrigerator 10 according to an embodiment of the present invention. The front barrier 215 of the drawer 21 may include: middle partition 2152, air duct 2153, panel 2151, and outer frame 2156. The front to back is a panel 2151, a septum 2152, and a panel 2151. The outer frame 2156 serves as an outer peripheral frame of the front barrier 215 of the drawer 21, and may have a support frame and a molding on the outer side of the support frame. The front baffle 215 of the drawer 21 closes the front space of the fresh-keeping space 23 and can be drawn by a user.
The air channel member 2153 is disposed on the side of the middle partition 2152 facing the fresh-keeping space 23, and together with the middle partition 2152, defines a front section 242 surrounding the air channel and passing through the front baffle 215, and the top of the air channel member 2153 is connected to the front baffle air inlet 2154 of the top section 241. The front ends of the plurality of air guide ribs 2131 of the top insulating panel 213 may direct air flow to the front baffle air intake 2154.
The panel 2151 is disposed on the side of the middle partition 2152 opposite to the fresh-keeping space 23; and forms an air-insulating space with the middle barrier 2152. The panel 2151 may be made of glass sheet. That is, the middle barrier 2152 divides the front barrier 215 of the drawer 21 into front and rear chambers. The front side cavity is an air heat insulation space, so that cold leakage is avoided. The rear chamber is a front section 242 surrounding the air duct. The middle partition 2152 may also be made of a thermal insulation material to further avoid leakage of cold. The side of the barrier 2152 facing the panel 2151 may define a plurality of protrusions that abut the rear side of the panel 2151 for supporting the panel 2151.
The double-layer structure of the front baffle 215 of the drawer 21 has compact structure and good heat preservation effect. The front baffle 215 of the drawer 21 can connect the double-layer structure into a whole by means of decorative strips or screw buckles and the like, the heat preservation effect is improved by two layers, and the middle baffle 2152, the air duct piece 2153, the panel 2151 and the outer frame 2156 are matched, so that the front baffle can be reasonably and simply fixed into a whole by using fewer parts, for example, the front baffle can be mutually fixed by means of buckles, clamping claws and clamping cards Kong Dengka. The lower end of the middle partition 2152 is provided with a corresponding plug-in structure, and is connected with the lower part of the drawer 21 to form a fixed whole. The front baffle 215 of the drawer 21 can be further provided with a sealing strip at the rear side of the outer frame 2156, and is matched with a sealing groove at the front end of the barrel 22, so that the fresh-keeping space 23 is sealed.
The barrel 22 can be used as an inner barrel which is spliced in an up-down or left-right split manner for simple forming and processing, and can be fixed by a special fastening buckle or screw and the like, and also can be used as an integrally formed barrel. The inner side of the side wall 225 of the tub 22 is provided with a corresponding drawer 21 mounting structure, a slide rail or a slideway.
Both sides of the drawer 21 are matched with the guide rail parts of the barrel 22, and the whole barrel 22 can be pulled and pulled along the front-back direction. After the drawer 21 is retracted into the barrel 22, a relatively sealed fresh-keeping space 23 is formed, and fresh-keeping storage is realized through a magnetic field applied by the magnetic field assembly.
The tub 22 is provided with heat insulation members, such as a top heat insulation plate 213, a middle partition 2152, a bottom heat insulation plate, and a rear wall heat insulation plate, on the outside wind surrounding the wind channel, so that the cooling capacity of the cooling air flow is prevented from being dispersed, and the cooling efficiency is improved.
Fig. 9 is a schematic view of the air guide 214 of the magnetic field preservation apparatus 20 in the magnetic field preservation refrigerator 10 according to an embodiment of the present invention. The top wall 221 of the tub 22 further includes an air guide 214. The air guide 214 is disposed at the front end of the top wall 221 of the tub 22, the rear part of the air guide 214 has a first air guide 2141 communicating with the front end of the top section 241, the bottom of the air guide 214 is opposite to the front baffle air inlet 2154, and has a second air guide 2142 for communicating with the front baffle air inlet 2154, so that the air flow of the top section 241 is guided into the front section 242, and the bottom of the air guide 214 and the top of the air duct 2153 are respectively disposed as inclined surfaces inclined downward from front to rear. By guiding the air guide 214, wind resistance can be reduced and noise can be reduced. A grille may be provided at the front baffle air intake 2154 to cooperate with the duct configuration of the air guide 214 and the front section 242.
The first air guide 2141 and the front baffle air inlet 2154 may be inclined planes, the angle may be set to 1-89 °, the gap between the front baffle air inlet 2154 and the inner barrel is 0-10mm, and the gap position may be filled with sealing strips, so that the sealing strips are in close contact and hardness interference is not generated. The open area of the front baffle air intake 2154 must be equal to or greater than the area of the front end of the top section 241. The air duct member 2153 may be made of common plastic or plastic with good heat conductivity (with heat conducting or heat insulating coating), and is connected to the drawer 21 and the drawer front cover by a specific plug-in fit manner, a certain heat insulating material (foam, PE or VIP, etc.) is adhered to the inside of the air duct member 2153, and the front baffle air outlet 2155 at the lower end of the air duct member 2153 enables the air flow to completely enter the bottom section 243 of the surrounding air duct, so that the air flow uniformly passes through the bottom section 243.
The drawer bottom is spaced from the bottom wall 223 of the tub 22 to form a lower space as a bottom section 243 surrounding the air duct. A front baffle air outlet 2155 is provided at a position opposite to the bottom end of the air duct 2153 at the front of the drawer bottom plate, so that the bottom section 243 is communicated with the front baffle air outlet 2155.
10 is a schematic diagram of a magnetic field assembly 30 of a magnetic field preservation apparatus 20 in a magnetic field preservation refrigerator 10 according to one embodiment of the present invention.
The magnetic field component of the magnetic field fresh-keeping refrigerator 10 can use an electromagnetic component as a magnetic field element, and can also use a permanent magnet as a magnetic field element. For example, an electromagnetic coil is matched with a magnetic conduction plate to form an electromagnetic plate, or a magnetic plate made of a permanent magnet. In addition, the magnetic field assembly can also use the electromagnetic coil and the permanent magnet in combination to generate the magnetic field.
In some embodiments, the magnetic assembly may include two oppositely disposed magnetic plates, such as disposed on the top and bottom walls of the magnetic field preservation apparatus 20, which may be oriented in the same direction to create a uniform magnetic field within the magnetic field preservation space 23 that is uniform and has a strength that meets the preservation requirements.
In some embodiments, the magnetic field assembly may further comprise a magnetic tape. The magnetic strips are used to connect the oppositely disposed magnetic plates to form an annular magnetic path around the drawer 21. The annular magnetic conduction passage can be made of a material with low coercive force and high magnetic conductivity, and the formed magnetic conduction passage can be used for gathering magnetic fields, so that the uniformity of the magnetic fields in the storage space is improved, the release of the magnetic fields to the outside can be reduced, and the interference to other components outside the magnetic field preservation device 20 (such as avoiding magnetization of other components) is reduced. The magnetic field is beneficial to improving the storage quality, shortening the freezing time, reducing the juice loss rate and nutrition loss of food, reducing the number of microorganisms and bacteria and prolonging the fresh-keeping period. And the magnetic field preservation device 20 is configured to form a surrounding air duct sequentially flowing from the air inlet 231 through the top wall 221 of the tub 22, the front baffle 215 of the drawer 21, and the space below the drawer bottom plate back to the air return 232 to refrigerate the preservation space 23. Further geomagnetic field and temperature control cooperate, utilize to encircle the wind channel and refrigerate fresh-keeping space 23, and cold wind still can in time take away the heat that electromagnetic coil during operation produced, has avoided fresh-keeping space 23's temperature fluctuation, synthesizes the effect of temperature and magnetic field, improves fresh-keeping effect to fresh-keeping space 23 food.
Fig. 10 is a schematic view of an air duct of the magnetic field preservation apparatus 20 in the magnetic field preservation refrigerator 10 according to an embodiment of the present invention. Fig. 11 is a system block diagram of a control assembly of the magnetic field preservation apparatus 20 in the magnetic field preservation refrigerator 10 according to one embodiment of the present invention.
The temperature sensing assembly 25 may include one or more temperature sensing components. The temperature sensing means may be positioned at various locations within the surrounding air duct and used to sense the temperature within the magnetic field preservation apparatus 20. In an alternative embodiment, the temperature detection assembly 25 may include: a first temperature detecting member 251 and a second temperature detecting member 252. The first temperature detecting unit 251 is disposed at an upstream section of the air flow in the surrounding air duct, and the detected temperature value is referred to as a first temperature value. The second temperature detecting unit 252 is disposed at a downstream section of the air flow in the surrounding air duct, and the detected temperature value is referred to as a second temperature value. The first temperature detecting component 251 is disposed at the rear of the top section 241 in the surrounding air duct, close to the air inlet 231; the second temperature detecting member 252 is disposed around the front of the top section 241 or the front of the bottom section 243 in the duct, closer to the return air inlet 232.
Since the upstream section of the air flow, i.e. the rear of the top section 241 in the surrounding air duct, is close to the air inlet 231, its temperature is relatively low during the opening of the evaporator 150; while the downstream section of the air flow, i.e. the front of the top section 241 or the front of the bottom section 243, is convected with the air in the fresh-keeping space 23 by the through-holes, the temperature of which is relatively high. The temperature of the whole magnetic field preservation device 20 can be determined by the first temperature detecting part 251 and the second temperature detecting part 252 which are positioned at different positions around the air duct.
In other embodiments, temperature sensing assembly 25 may use only one temperature sensing component, such as retaining one of first temperature sensing component 251 and second temperature sensing component 252, or providing a temperature sensing component at another location within magnetic field preservation apparatus 20.
The refrigerating system 16 comprises a damper 161 and a fan 160, wherein the damper 161 can be used for controlling the on-off state and the magnitude of the refrigerating air flow sent into the magnetic field fresh-keeping device 20, the start and stop of a compressor 162 and the rotation speed adjustment, and can change the refrigerating load (namely refrigerating capacity), and the damper 161 can be arranged between the air inlet 231 and the refrigerating air duct 140 and is configured to be controlled to be opened and closed. The fan 160 may be used to promote the formation of a refrigerant gas stream that circulates in the surrounding air duct.
In some alternative embodiments, the magnetic field preservation device 20 is disposed in the refrigerated storage compartment, the fan 160 may be a refrigeration fan that supplies air to the refrigerated storage compartment, and the damper 161 is used to open and close the air inlet 231. The evaporator 150 may be a refrigerated evaporator dedicated to refrigerating the refrigerated storage compartment.
The refrigeration controller 17 includes a memory 172 and a processor 171, wherein the memory 172 stores a machine executable program 173, and the machine executable program 173 implements the refrigeration control method of the magnetic field fresh food refrigerator of the present embodiment when executed by the processor 171.
The refrigeration controller 17 is in signal connection with the refrigeration system 16, and is used for providing control signals for the refrigeration system 16, wherein the control signals are used for controlling the opening and closing of the air door 161, the starting and stopping of the fan 160, the starting and stopping of the compressor 162 and the rotating speed, so that the refrigeration load is adjusted. The refrigeration controller 17 may be integrated on a main control board of the refrigerator 10.
The refrigeration controller 17 may be implemented by a variety of devices having certain data processing capabilities, and in a typical configuration, the controller 300 may include a processor 310, a memory 320, an input/output interface, and the like. The refrigeration controller 17 may receive the measurement of the temperature sensing assembly 25 as a control basis for the refrigeration system 16.
The embodiment also provides a refrigeration control method of the magnetic field fresh-keeping refrigerator, which is used for controlling the magnetic field fresh-keeping refrigerator of the embodiment, and can realize rapid and stable refrigeration and cooling of the magnetic field fresh-keeping device 20. Fig. 12 is a schematic diagram of a refrigeration control method of a magnetic field fresh-keeping refrigerator according to an embodiment of the present invention, the refrigeration control method of the magnetic field fresh-keeping refrigerator generally includes:
step S102, acquiring the state of a magnetic field fresh-keeping space, wherein the state of the magnetic field fresh-keeping space comprises the internal temperature of a magnetic field fresh-keeping device, the running state of a magnetic field, the running state of a refrigerating system and the like.
Step S104, judging whether the state of the magnetic field fresh-keeping space meets the preset quick refrigeration starting condition. The rapid refrigeration starting condition can be set according to the state that the magnetic field fresh-keeping device is opened or needs rapid refrigeration after new storage objects are put in. For example, the determination may be made by determining whether or not the first temperature value detected by the first temperature detecting means is equal to or greater than a first temperature threshold value. And if the first temperature value is larger than the first temperature threshold value, judging that the state of the magnetic field fresh-keeping space meets the quick refrigeration starting condition.
Step S106, under the condition that the quick refrigeration starting condition is met, the refrigeration system is controlled to quickly refrigerate the magnetic field fresh-keeping device until the state of the magnetic field fresh-keeping space meets the preset quick refrigeration ending condition. In the rapid cooling process, the cooling system continuously provides cooling air flow to the magnetic field fresh-keeping device in a high cooling load state, for example, the rotating speed of the fan and the compressor can be set to be higher than that in a normal state, so that the cooling capacity is improved.
Step S108, after the refrigeration system completes the rapid refrigeration of the magnetic field preservation device, the refrigeration system is controlled to perform one or more stages of transitional refrigeration processes on the magnetic field preservation device.
The rapid cooling end condition may include: the first temperature value is smaller than or equal to a second temperature threshold value and/or the second temperature value detected by the second temperature detecting component is smaller than or equal to a third temperature threshold value, the second temperature threshold value is smaller than the first temperature threshold value, and the third temperature threshold value is smaller than the second temperature threshold value. Namely, after the temperature of the magnetic field fresh-keeping device is rapidly reduced to a preset range, entering a transitional refrigeration process. The over-cooling process may also be referred to as a pre-cooling mode.
The over-refrigeration process may include one or more stages. In the case of a multi-stage transitional refrigeration process, the steps of controlling the refrigeration system to perform the multi-stage transitional refrigeration process on the magnetic field preservation device include:
in each stage, if the first temperature value is larger than or equal to a refrigeration starting temperature threshold value corresponding to the stage, controlling the starting of a refrigeration system, and providing refrigeration air flow for the magnetic field fresh-keeping device in a normal refrigeration load state; if the first temperature value is smaller than the refrigerating stop temperature threshold value corresponding to the stage, controlling the refrigerating system to stop providing refrigerating air flow to the magnetic field fresh-keeping device; and after the number of times of controlling the refrigerating system to stop providing the refrigerating airflow to the magnetic field fresh-keeping device exceeds a preset number of times threshold, or after the second temperature value is smaller than or equal to the stage temperature threshold of the stage, entering transitional refrigeration of the next stage.
Along with the refrigerating, the refrigerating stop temperature threshold value and the refrigerating start temperature threshold value in the later transition refrigerating stage are respectively smaller than the refrigerating stop temperature threshold value and the refrigerating start temperature threshold value in the former transition refrigerating stage; the stage temperature threshold in the subsequent transitional refrigeration stage is less than the stage temperature threshold in the previous transitional refrigeration stage.
Through the transitional refrigeration process of a plurality of stages, the cooling speed can be gradually reduced, and the overlarge temperature fluctuation of the magnetic field fresh-keeping device is avoided.
Step S110, after the refrigeration system finishes transitional refrigeration of the magnetic field fresh-keeping device, the refrigeration system is controlled to normally refrigerate the magnetic field fresh-keeping device. And in the process of performing transitional refrigeration on the magnetic field preservation device by the refrigeration system, if the number of times of stopping providing the refrigeration air flow to the magnetic field preservation device by the refrigeration system exceeds a preset number of times threshold, or the second temperature value is smaller than or equal to the stage temperature threshold of the last stage, performing the step of controlling the refrigeration system to perform normal refrigeration on the magnetic field preservation device.
The refrigerating load and the refrigerating airflow of the refrigerating system in the normal refrigerating load state are respectively smaller than those in the high refrigerating load state. I.e. the rotational speed of the fan and the compressor can be set to normal gear. In the transitional refrigeration process and the normal refrigeration process, the refrigeration system is used for refrigerating in a normal refrigeration load state, and compared with a high refrigeration load state in the rapid refrigeration process, the rotating speed gear of the fan and the compressor is lower.
The method of the embodiment can quickly cool down under the condition that the magnetic field fresh-keeping space needs to be quickly cooled, and meets the quick cooling requirement of the magnetic field fresh-keeping device after being opened or new storage materials are put in. After the refrigerating system completes the rapid refrigerating of the magnetic field fresh-keeping device, the refrigerating system is controlled to perform one or more stages of transitional refrigerating processes on the magnetic field fresh-keeping device. And the temperature drop speed is slowed down by utilizing the transitional refrigeration process after the rapid refrigeration technology, so that the rapid fluctuation of the temperature is avoided. The effect of temperature and magnetic field is integrated, and the fresh-keeping effect on the food in the fresh-keeping space is improved.
Fig. 13 is a flowchart of an alternative implementation of a refrigeration control method of a magnetic field fresh-keeping refrigerator according to an embodiment of the present invention, in which the transitional refrigeration of two stages is implemented, and a skilled person can implement the transitional refrigeration of one or more than two stages on the basis of the above. As shown in fig. 13, the control flow includes:
step S202, acquiring a first temperature value Tsnr1 detected by the first temperature detecting means and a second temperature value Tsnr2 detected by the second temperature detecting means;
in step S204, it is determined whether the state of the magnetic field fresh-keeping space meets the preset quick refrigeration starting condition, that is, whether Tsnr1 is greater than or equal to T1 is satisfied, where T1 is a first temperature threshold, which may be set according to a set temperature of the magnetic field fresh-keeping device, for example, when the set temperature is near the freezing point, T1 may be set to about 5 ℃.
Step S206, the refrigerating system carries out rapid refrigeration on the magnetic field fresh-keeping device, and the fan and the compressor run at high rotation speed. That is, in the rapid cooling mode, the rotational speeds of the blower and the compressor may be set to a higher gear than in the normal state, thereby improving the cooling capacity.
And step S208, judging whether Tsnr1 is less than or equal to T2 or whether Tsnr1 is less than or equal to T3 is met. T2 is a second temperature threshold, T3 is a third temperature threshold, the second temperature threshold T2 is smaller than the first temperature threshold T1, the third temperature threshold T3 is smaller than the second temperature threshold T2, for example T2 may be set to 1 degree celsius, and T3 may be set to-1 degree celsius.
Step S210, when the refrigerating system enters a transitional refrigerating first stage and Tsnr1 is more than or equal to Ton1, refrigerating is started, and a fan and a compressor are operated at normal rotation speeds; when Tsr 1 is less than or equal to Toff1, the refrigeration is turned off. Ton1 is a refrigeration start-up temperature threshold corresponding to the first stage transient refrigeration, toff1 is a refrigeration shut-down temperature threshold corresponding to the first stage transient refrigeration, for example Ton1 may be set to-1 degrees celsius, and Toff1 may be set to-1.5 degrees celsius.
In step S212, it is determined whether the number of times Tsr 1 is less than or equal to Toff1 exceeds a number of times threshold, or whether Tsr 2 is less than or equal to Ts1 is true, and Ts1 is a stage temperature threshold in the first stage. That is, this step judges whether the number of times the refrigeration system stops supplying the refrigeration air flow to the magnetic field preservation device exceeds a preset number of times threshold (for example, 5 times), or whether the second temperature value is equal to or less than the stage temperature threshold of the first stage is established. Ts1 may be set to-1 degrees celsius.
Step S214, when the refrigerating system enters a transitional refrigerating second stage and Tsnr1 is more than or equal to Ton2, refrigerating is started, and a fan and a compressor are operated at normal rotation speeds; when Tsr 1 is less than or equal to Toff2, the refrigeration is turned off. Ton2 is a refrigerating start-up temperature threshold corresponding to the second stage transitional refrigeration, toff2 is a refrigerating shut-down temperature threshold corresponding to the second stage transitional refrigeration, for example Ton2 may be set to-1.5 degrees celsius, and Toff2 may be set to-2 degrees celsius.
In step S216, it is determined whether the number of times Tsr 1 is less than or equal to Toff2 exceeds a number of times threshold, or whether Tsr 2 is less than or equal to Ts2 is true, and Ts2 is a stage temperature threshold in the second stage. That is, this step judges whether the number of times the refrigeration system stops supplying the refrigeration air flow to the magnetic field preservation device exceeds a preset number of times threshold (for example, 5 times), or whether the second temperature value is equal to or less than the stage temperature threshold of the second stage is established. Ts2 may be set to-2 degrees celsius.
In step S218, the refrigeration system enters a normal refrigeration phase. When Tsnr1 is more than or equal to the normal refrigeration starting temperature, the refrigeration is started, and the fan and the compressor run at normal rotation speeds; and when Tsr 1 is smaller than or equal to the normal refrigeration shutdown temperature, the refrigeration is closed. The normal cooling on temperature may be set to-2.0 degrees celsius and the normal cooling off temperature may be set to-2.5 degrees celsius.
In the above embodiment, the first temperature detecting component may be disposed at a top of the magnetic field preservation device, tsnr1 identifies an air temperature at the top of the magnetic field preservation device, and the second temperature detecting component may be disposed at a bottom of the magnetic field preservation device, tsnr1 identifies an air temperature at the bottom of the magnetic field preservation device. Under the condition that the magnetic field fresh-keeping device is in a non-freezing scene and food materials are not frozen, T1 can be set to be about 5 ℃. Ton1 may be set at-1 degrees celsius and Toff1 may be set at-1.5 degrees celsius. Ton2 may be set at-1.5 degrees celsius and Toff2 may be set at-2 degrees celsius. The normal cooling on temperature may be set to-2.0 degrees celsius and the normal cooling off temperature may be set to-2.5 degrees celsius. Ts1 may be set to-1 degrees celsius. Ts2 may be set to-2 degrees celsius.
The above threshold is merely illustrative, and the threshold parameter may be set as needed when the method of the present embodiment is specifically used. The method can realize rapid cooling under the condition of high temperature, and can prevent the reduction of the stored material quantity caused by rapid temperature fluctuation and change.
Thus far, the technical solution of the present invention has been described in connection with the foregoing embodiments, but it will be readily understood by those skilled in the art that the scope of the present invention is not limited to only these specific embodiments. The technical solutions in the above embodiments can be split and combined by those skilled in the art without departing from the technical principles of the present invention, and equivalent changes or substitutions can be made to related technical features, so any changes, equivalent substitutions, improvements, etc. made within the technical principles and/or technical concepts of the present invention will fall within the protection scope of the present invention.
Claims (10)
1. A refrigeration control method of a magnetic field fresh-keeping refrigerator, the magnetic field fresh-keeping refrigerator comprising: a case defining a storage compartment therein; a refrigeration air duct for providing refrigeration air flow to the storage compartment; a refrigeration system for forming the refrigerant gas stream; the magnetic field fresh-keeping device is arranged in the storage compartment, the magnetic field fresh-keeping device is provided with an air inlet and an air return opening which are used for being communicated with the refrigeration air duct so as to lead in the refrigeration air flow to refrigerate the magnetic field fresh-keeping space inside the refrigeration air duct, and the refrigeration control method comprises the following steps:
judging whether the state of the magnetic field fresh-keeping space meets a preset quick refrigeration starting condition or not;
if yes, controlling the refrigerating system to rapidly refrigerate the magnetic field fresh-keeping device until the state of the magnetic field fresh-keeping space meets the preset rapid refrigeration ending condition;
after the refrigerating system finishes the rapid refrigerating of the magnetic field fresh-keeping device, controlling the refrigerating system to perform one or more stages of transitional refrigerating processes on the magnetic field fresh-keeping device;
and after the refrigerating system finishes transitional refrigeration of the magnetic field fresh-keeping device, controlling the refrigerating system to normally refrigerate the magnetic field fresh-keeping device.
2. The refrigeration control method of a magnetic field fresh-keeping refrigerator according to claim 1, wherein
The process of the refrigeration system for rapidly refrigerating the magnetic field fresh-keeping device is configured to: the refrigeration system continuously provides the refrigeration air flow to the magnetic field preservation device in a high refrigeration load state.
3. The refrigeration control method of a magnetic field fresh-keeping refrigerator according to claim 2, wherein the magnetic field fresh-keeping device is provided with a surrounding air duct formed to start from the air inlet, surround the fresh-keeping space and then return to the air return port; and a first temperature detecting part installed in the surrounding air duct; and the step of judging whether the state of the magnetic field fresh-keeping space meets the preset quick refrigeration starting condition comprises the following steps:
judging whether the first temperature value detected by the first temperature detection component is greater than or equal to a first temperature threshold value, if so, judging that the state of the magnetic field fresh-keeping space meets the quick refrigeration starting condition.
4. The refrigeration control method of a magnetic field fresh keeping refrigerator according to claim 3, wherein the first temperature detecting member is installed at an upstream section of the air flow in the surrounding air duct, and the magnetic field fresh keeping apparatus further comprises: a second temperature detecting member installed at a downstream section of the air flow in the surrounding air duct;
The rapid cooling end condition includes: the first temperature value is smaller than or equal to a second temperature threshold value and/or the second temperature value detected by the second temperature detecting component is smaller than or equal to a third temperature threshold value, the second temperature threshold value is smaller than the first temperature threshold value, and the third temperature threshold value is smaller than the second temperature threshold value.
5. The refrigeration control method of a magnetic field fresh-keeping refrigerator according to claim 4, wherein,
the supercooling process includes a plurality of stages, and the controlling the refrigerating system to perform the supercooling process of the plurality of stages to the magnetic field fresh-keeping apparatus includes:
in each stage, if the first temperature value is larger than or equal to a refrigeration starting temperature threshold value corresponding to the stage, controlling the refrigeration system to start, and providing the refrigeration airflow for the magnetic field fresh-keeping device in a normal refrigeration load state; if the first temperature value is smaller than the refrigerating stop temperature threshold value corresponding to the stage, controlling the refrigerating system to stop providing the refrigerating air flow to the magnetic field fresh-keeping device;
and after the number of times of controlling the refrigerating system to stop providing the refrigerating airflow to the magnetic field fresh-keeping device exceeds a preset number of times threshold, or after the second temperature value is less than or equal to a stage temperature threshold of the stage, entering transitional refrigeration of the next stage.
6. The refrigeration control method of a magnetic field fresh-keeping refrigerator according to claim 5, wherein,
along with the refrigerating, the refrigerating stop temperature threshold value and the refrigerating start temperature threshold value in the later transition refrigerating stage are respectively smaller than the refrigerating stop temperature threshold value and the refrigerating start temperature threshold value in the former transition refrigerating stage; the stage temperature threshold in the subsequent transitional refrigeration stage is less than the stage temperature threshold in the previous transitional refrigeration stage.
7. The refrigeration control method of a magnetic field fresh-keeping refrigerator according to claim 5, wherein,
and in the process of performing transitional refrigeration on the magnetic field preservation device by the refrigeration system in the last stage, if the number of times of stopping providing the refrigeration air flow to the magnetic field preservation device by the refrigeration system exceeds a preset number of times threshold, or the second temperature value is smaller than or equal to the stage temperature threshold in the last stage, executing the step of controlling the refrigeration system to perform normal refrigeration on the magnetic field preservation device.
8. The refrigeration control method of a magnetic field fresh-keeping refrigerator according to claim 5, wherein,
the refrigeration load of the refrigeration system and the size of the refrigeration airflow in the normal refrigeration load state are respectively smaller than the refrigeration load of the refrigeration system and the size of the refrigeration airflow in the high refrigeration load state.
9. A magnetic field fresh keeping refrigerator comprising:
a case defining a storage compartment therein;
a refrigerating air duct for providing refrigerating air flow for the storage space;
a refrigeration system for forming the refrigeration gas stream;
the magnetic field preservation device is arranged in the storage room, and is provided with an air inlet and an air return opening which are used for communicating the refrigerating air duct so as to introduce the refrigerating air flow to refrigerate the magnetic field preservation space inside the refrigerating air duct;
a refrigeration controller comprising a memory and a processor, wherein the memory stores a machine executable program which when executed by the processor implements the refrigeration control method of a magnetic field fresh-keeping refrigerator according to any one of claims 1 to 8.
10. The magnetic field fresh-keeping refrigerator of claim 9, wherein
The magnetic field fresh-keeping device is provided with an air inlet and an air return opening which are used for communicating the refrigeration air channel, and forms a surrounding air channel which starts from the air inlet, surrounds the fresh-keeping space and returns to the air return opening; and the magnetic field fresh-keeping refrigerator includes:
the first temperature detection component is arranged at the upstream section of the air flow in the surrounding air duct, and the detected temperature value is recorded as a first temperature value;
And the second temperature detection part is arranged at the downstream section of the airflow in the surrounding air duct, and the detected temperature value is recorded as a second temperature value.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210605316.8A CN117190573A (en) | 2022-05-30 | 2022-05-30 | Magnetic field fresh-keeping refrigerator and refrigeration control method thereof |
| PCT/CN2023/096884 WO2023231976A1 (en) | 2022-05-30 | 2023-05-29 | Magnetic field freshness-preserving refrigerator and refrigeration control method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210605316.8A CN117190573A (en) | 2022-05-30 | 2022-05-30 | Magnetic field fresh-keeping refrigerator and refrigeration control method thereof |
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| CN117190573A true CN117190573A (en) | 2023-12-08 |
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| CN202210605316.8A Pending CN117190573A (en) | 2022-05-30 | 2022-05-30 | Magnetic field fresh-keeping refrigerator and refrigeration control method thereof |
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| CN (1) | CN117190573A (en) |
| WO (1) | WO2023231976A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980028271A (en) * | 1996-10-21 | 1998-07-15 | 배순훈 | Quick control of refrigerator temperature |
| KR100389815B1 (en) * | 2000-10-18 | 2003-06-27 | 주식회사 대우일렉트로닉스 | Refrigerator control method |
| KR20020041686A (en) * | 2000-11-28 | 2002-06-03 | 윤종용 | Kimchi refrigerator and temperature controlling method thereof |
| CN104990358B (en) * | 2015-06-26 | 2019-03-12 | 青岛海尔股份有限公司 | The zone refrigeration control method and zone refrigeration control device of cold compartment of refrigerator |
| CN216114967U (en) * | 2021-08-11 | 2022-03-22 | 青岛海尔电冰箱有限公司 | Magnetic field fresh-keeping device and air-cooled refrigeration equipment that anti cold wind directly blows |
| CN216114895U (en) * | 2021-08-13 | 2022-03-22 | 青岛海尔电冰箱有限公司 | Refrigeration equipment with magnetic field fresh-keeping function |
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- 2022-05-30 CN CN202210605316.8A patent/CN117190573A/en active Pending
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- 2023-05-29 WO PCT/CN2023/096884 patent/WO2023231976A1/en unknown
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