CN114061203A - A kind of refrigerator - Google Patents
A kind of refrigerator Download PDFInfo
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- CN114061203A CN114061203A CN202010762994.6A CN202010762994A CN114061203A CN 114061203 A CN114061203 A CN 114061203A CN 202010762994 A CN202010762994 A CN 202010762994A CN 114061203 A CN114061203 A CN 114061203A
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- storage device
- modified atmosphere
- oxygen
- drawer
- vacuum pump
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- 238000003860 storage Methods 0.000 claims abstract description 197
- 239000012528 membrane Substances 0.000 claims abstract description 27
- 238000004378 air conditioning Methods 0.000 claims abstract description 18
- 238000004891 communication Methods 0.000 claims abstract description 14
- 239000001301 oxygen Substances 0.000 claims description 119
- 229910052760 oxygen Inorganic materials 0.000 claims description 119
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 118
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 64
- 239000007789 gas Substances 0.000 claims description 45
- 229910052757 nitrogen Inorganic materials 0.000 claims description 32
- 230000007613 environmental effect Effects 0.000 claims description 24
- 238000007789 sealing Methods 0.000 claims description 9
- 239000012466 permeate Substances 0.000 claims description 7
- 238000005086 pumping Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims 1
- 238000004321 preservation Methods 0.000 abstract description 12
- 235000012055 fruits and vegetables Nutrition 0.000 abstract 1
- 230000007774 longterm Effects 0.000 abstract 1
- 230000002829 reductive effect Effects 0.000 description 18
- 230000000694 effects Effects 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 9
- 230000009467 reduction Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000029058 respiratory gaseous exchange Effects 0.000 description 6
- 238000004320 controlled atmosphere Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- 238000009920 food preservation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003851 biochemical process Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035790 physiological processes and functions Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- -1 therefore Chemical compound 0.000 description 1
Images
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
-
- 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
- F25D17/042—Air treating means within refrigerated spaces
-
- 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
- F25D25/024—Slidable shelves
- F25D25/025—Drawers
-
- 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
- F25D29/003—Arrangement or mounting of control or safety devices for movable 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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/04—Treating air flowing to refrigeration compartments
- F25D2317/043—Treating air flowing to refrigeration compartments by creating a vacuum in a storage compartment
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/36—Visual displays
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
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- 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)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The invention relates to the technical field of refrigerator preservation, and discloses a refrigerator, which comprises a low-temperature storage chamber, a door body for opening or closing the storage chamber, a storage device, an air-conditioning membrane assembly and a vacuum pump, wherein the air-conditioning membrane assembly is arranged in the storage device and comprises an air-conditioning membrane and an air-conditioning membrane accommodating cavity, the air-conditioning membrane accommodating cavity is arranged in the storage device and is communicated with the storage device, the air-conditioning membrane is covered on a communication port of the air-conditioning membrane accommodating cavity and the storage device, and the vacuum pump is communicated with the air-conditioning membrane accommodating cavity through a vacuum tube and is used for extracting air in the air-conditioning membrane accommodating cavity. Thereby achieving the purpose of long-term fresh-keeping of fruits and vegetables.
Description
Technical Field
The invention relates to the technical field of refrigerator preservation, in particular to a refrigerator.
Background
The normal air composition comprises about 78% of nitrogen, about 21% of oxygen, about 0.939% of rare gas, 0.031% of carbon dioxide, and 0.03% of other gases and impurities, in the preservation technology of the refrigerator, oxygen is closely related to the oxidation and respiration of food in the refrigerator, the slower the respiration of food, the lower the oxidation, the longer the preservation time, the lower the oxygen content in the storage space, and the obvious effect on food preservation, therefore, the modified atmosphere preservation technology is gradually becoming an important means for food preservation, the modified atmosphere preservation technology generally refers to the technology for prolonging the storage life of food by regulating the gas atmosphere (gas component ratio or gas pressure) in the closed space where the storage object is located, and the basic principle is as follows: in a certain closed space, a gas atmosphere different from normal air components is obtained through various regulation modes so as to inhibit physiological and biochemical processes and activities of microorganisms which cause the putrefaction and deterioration of stored objects (generally food materials), and in the field of modified atmosphere preservation, a nitrogen-rich and oxygen-poor fresh-keeping gas atmosphere is obtained by generally filling a nitrogen-rich gas into the closed space to reduce the oxygen content.
Until now, because the nitrogen making equipment for controlled atmosphere preservation is large in size and high in cost, the technology is basically limited to be used in various large professional storage warehouses, and the miniaturization and silencing of the controlled atmosphere system cannot be economically realized by adopting a proper gas conditioning technology and a corresponding device, so that the technology is suitable for families or individual users, is a technical problem which is expected to be solved but is not successfully solved by technical personnel in the field of controlled atmosphere preservation, and besides, the automation control of the controlled atmosphere preservation technology is also a technical problem to be solved by technical personnel in the field.
Disclosure of Invention
In some embodiments of the present application, a refrigerator is provided, which creatively provides to discharge oxygen in air inside a storage device, so as to obtain a nitrogen-rich and oxygen-poor gas atmosphere inside the storage device, which is beneficial to food preservation, and by arranging a modified atmosphere membrane module inside the storage device and adopting a vacuum pump in cooperation with the modified atmosphere membrane, the oxygen content in the storage device is reduced, thereby solving the problems of complex structure and large volume of the modified atmosphere preservation technology in the prior art, and meanwhile, intelligent control is realized by arranging a control system inside the storage device.
In some embodiments of the application, the modified atmosphere component is improved, the modified atmosphere containing cavity is arranged on the shell cover, the air-conditioning film accommodating cavity is communicated with the storage device, the air-conditioning film is coated on a communication port of the air-conditioning film accommodating cavity and the storage device, the air-conditioning film accommodating cavity is communicated with a vacuum tube, the other end of the vacuum tube is communicated with a vacuum pump, the vacuum pump is used for pumping the gas in the oxygen-enriched space, the air pressure in the air-conditioning film accommodating cavity is reduced, since the modified atmosphere film is configured such that more oxygen in the storage device permeates through the modified atmosphere film into the modified atmosphere film receiving cavity than nitrogen, therefore, oxygen in the storage device space outside the modified atmosphere film accommodating cavity continuously enters the oxygen-enriched space of the modified atmosphere film accommodating cavity through the modified atmosphere film to be extracted, the oxygen content in the storage device space is gradually reduced, the oxygen concentration is reduced, and the effect of keeping fresh is achieved by inhibiting respiration.
In some embodiments of the present application, an improvement is made to a modified atmosphere module, wherein the modified atmosphere module contains a cavity for communicating external air with a storage device, at least one modified atmosphere module is provided and covers a communication port between the storage device and the external air, the storage device is communicated with a vacuum tube, the other end of the vacuum tube is communicated with a vacuum pump, when the vacuum pump sucks air, gas in the storage device is pumped out, wherein the pumped gas is normal nitrogen and oxygen mixed gas, negative pressure in the storage device, and because the modified atmosphere module is configured such that more nitrogen in the external air permeates through the modified atmosphere module and enters the storage device than oxygen, the oxygen content in the space of the storage device is gradually reduced, thereby reducing the oxygen concentration and achieving the effect of keeping fresh by suppressing respiration.
In some embodiments of the present application, a control system is improved, an environmental parameter threshold in a storage device is preset through an operation panel, a setting value of the environmental parameter threshold is displayed through a display screen, the display screen simultaneously displays a current oxygen content value in the storage device, a controller receives an electrical signal transmitted by an oxygen concentration sensor in real time to compare a relationship between the current oxygen content value in the storage device and the preset environmental parameter threshold, when the current oxygen content value in the storage device is greater than the environmental parameter threshold, the controller controls a vacuum pump to start, the oxygen content in a space of the storage device is gradually reduced, when the oxygen concentration sensor detects that the oxygen content value in the space of the storage device reaches the environmental parameter threshold in the preset storage device of the operation panel, the controller controls the vacuum pump to stop vacuumizing, and at this time, a storage device oxygen reduction operation is completed, realizes the automation of oxygen reduction operation.
In some embodiments of the present application, a refrigerator is disclosed, which includes a low temperature storage chamber and a door body for opening or closing the storage chamber, and further includes: a storage device disposed in the low-temperature storage space; the modified atmosphere membrane assembly comprises a modified atmosphere membrane and a modified atmosphere membrane accommodating cavity, and the modified atmosphere membrane accommodating cavity is arranged on the inner wall of the storage device; a vacuum pump in communication with the storage device for drawing gas from the storage device; the signal element group is arranged on the storage device and used for detecting the gas composition state in the storage device and the physical position state of the storage device in real time; and the control system is electrically connected with the vacuum pump and the signal element group, and is used for receiving the electric signals sent by the signal element group and controlling the vacuum pump according to the state of the electric signals.
In some embodiments of the present application, the storage device comprises: the vacuum storage device comprises a shell, a vacuum storage cavity and a vacuum pump, wherein a drawer opening is formed in one side wall of the shell; a drawer defined as a placing space for placing food, the drawer being inserted into the housing in a push-pull manner from the drawer opening, the drawer being provided with an end cap which is engaged with the drawer opening of the housing so as to open or seal the vacuum storage space; the shell cover is arranged on the top wall of the shell and matched with the shell and the end cover to form a complete sealed space, and the air-conditioning film accommodating cavity is arranged on the shell cover.
In some embodiments of the present application, the modified atmosphere film accommodating chamber is disposed on the housing, and the modified atmosphere film accommodating chamber is communicated with the storage device, the modified atmosphere film is coated on a communication port of the modified atmosphere film accommodating chamber and the storage device, the modified atmosphere film is configured such that more oxygen in the storage device permeates through the modified atmosphere film into the modified atmosphere film accommodating chamber than nitrogen, an oxygen-rich space is formed in the modified atmosphere film accommodating chamber, the modified atmosphere film accommodating chamber is communicated with a vacuum tube, the other end of the vacuum tube is communicated with the vacuum pump, and the vacuum pump is used for extracting gas in the oxygen-rich space.
In some embodiments, the modified atmosphere film accommodating chamber is used for communicating external air with the storage device, the modified atmosphere film is provided with at least one communicating port which is coated on the storage device and the external air, and the modified atmosphere film is configured to allow more nitrogen in the storage device to penetrate through the modified atmosphere film into the modified atmosphere film accommodating chamber than oxygen in the storage device.
In some embodiments of the present application, the modified atmosphere film accommodating chamber is configured as a supporting frame, the supporting frame is detachably mounted on the housing wall, the supporting frame has a first surface and a second surface which are parallel to each other, the first surface is communicated with the outside air, the second surface is communicated with the storage device, the first surface is communicated with the second surface to form an air duct, the modified atmosphere films are two planar modified atmosphere films, the two planar modified atmosphere films are respectively laid on the first surface and the second surface, and the modified atmosphere films and the supporting frame together form a nitrogen-rich space.
In some embodiments of the present application, the storage device is communicated with a vacuum tube, and the other end of the vacuum tube is communicated with the vacuum pump, and the vacuum pump is used for pumping gas inside the storage device.
In some embodiments of the present application, the signal element group includes: the oxygen concentration sensor is arranged inside the storage device and used for monitoring the oxygen content value in the storage device in real time and converting the oxygen content value into an electric signal to be transmitted to the controller. A drawer detection device configured to generate a drawer closing signal when the drawer is fully pushed into the housing and transmit the drawer closing signal to the controller.
In some embodiments of the present application, the method further comprises: and the locking device is arranged at the joint of the end cover and the shell and used for locking and sealing the end cover to the shell so as to form a sealed vacuum storage space.
In some embodiments of the present application, the control system comprises: the vacuum pump comprises a display screen, an operation and control board and a controller, wherein the display screen and the operation and control board are electrically connected to the controller, the controller is simultaneously electrically connected to the signal element group and the vacuum pump, the controller is used for receiving and processing electric signals of the signal element group, the controller is used for converting the electric signals of the signal element group into digital signals, transmitting the digital signals to the display screen and displaying the digital signals through the display screen, the operation and control board is used for presetting an environmental parameter threshold value in the storage device and displaying the preset environmental parameter threshold value through the display screen, and the controller controls the working state of the vacuum pump according to the environmental parameter threshold value and the electric signals.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a structural view of a refrigerator according to an embodiment;
FIG. 2 is one of the block diagrams of a storage device according to an embodiment;
FIG. 3 is a drawer structure view according to an embodiment;
FIG. 4 is an enlarged view at A (one of the lock structure views) according to the embodiment;
FIG. 5 is one of the structural views of a locking device according to an embodiment;
fig. 6 is one of the structural views of a storage device according to an embodiment;
FIG. 7 is a schematic structural view of a door body and control system according to an embodiment;
FIG. 8 is a block diagram of a control system according to an embodiment;
FIG. 9 is a view showing the structure of the mounting of the housing and the modified atmosphere module according to embodiment 1;
FIG. 10 is a view showing the structure of a modified atmosphere module according to example 1;
FIG. 11 is a gas flow diagram according to example 1;
FIG. 12 is a view showing the structure of the mounting of the housing and the modified atmosphere module according to embodiment 2;
FIG. 13 is a view showing the structure of a modified atmosphere module according to example 2;
FIG. 14 is a structure diagram of a housing according to embodiment 2;
FIG. 15 is a gas flow diagram according to example 2;
fig. 16 is a circuit connection diagram according to an embodiment.
Reference numerals:
100. a low temperature storage compartment; 200. a door body; 300. a storage device; 310. a housing; 311. a slide rail; 320. a drawer; 321. an end cap; 322. a roller; 330. a housing; 400. a gas regulating membrane module; 410. air-conditioning film; 420. an air-conditioning film accommodating cavity; 421. a support frame; 422. a first surface; 423. a second surface; 500. a vacuum pump; 510. a vacuum tube; 600. a signal element group; 610. an oxygen concentration sensor; 620. a drawer position detecting device; 700. a control system; 710. a display screen; 720. a control panel; 730. a controller; 800. a tightening device; 811. a connecting frame; 812. a handle bar; 813. a guide rod; 814. a rotating wheel; 815. a guide hole; 816. and a limiting plate.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
According to the refrigerator in the embodiment of the present application, referring to fig. 1, the refrigerator has an approximately rectangular parallelepiped shape, an external appearance of the refrigerator is defined by a cabinet defining a storage chamber and a plurality of door bodies 200 provided on the cabinet, the plurality of door bodies 200 are rotatably connected to the cabinet, wherein the door body 200 includes a door body 200 outer shell located outside the storage chamber, a door body 200 inner container located inside the storage chamber, an upper end cover, a lower end cover, and a heat insulating layer located between the door body 200 outer shell, the door body 200 inner container, the upper end cover, and the lower end cover; typically, the thermal insulation layer is filled with a foam material.
Referring to fig. 1, a low temperature storage chamber 100 is a cabinet structure having an opening at one end, the low temperature storage chamber 100 forms a low temperature storage space, a door 200 is installed at the opening of the low temperature storage chamber 100 to open or close the low temperature storage chamber 100, when the door 200 is closed, the low temperature storage chamber 100 is in a closed state, the door 200 includes an outer shell of the door 200 located outside the storage chamber and an inner container of the door 200 located inside the storage chamber, and a heat insulating layer is disposed between the outer shell of the door 200 and the inner container of the door 200, and is generally filled with a foaming material.
Referring to fig. 2, 3 and 6, the storage device 300 is formed in a substantially rectangular parallelepiped shape, and the storage device 300 is disposed in the low temperature storage chamber 100, so that the stored goods in the storage device 300 can be stored in a vacuum and low temperature environment, and the preservation effect is better.
The storage device 300 provides a low-oxygen storage environment for storing articles, the storage device 300 comprises a housing 310, a drawer 320, a housing cover 330 and a modified atmosphere film 410 assembly 400, the housing 310 defines a vacuum storage space, a drawer 320 opening is arranged on one side wall of the housing 310, the drawer 320 defines a placement space for placing food, the drawer 320 is inserted into the housing 310 in a push-pull manner from the drawer 320 opening, an end cover 321 is arranged on the drawer 320, the end cover 321 is matched with the drawer 320 opening of the housing 310 to open or seal the storage device 300, the housing cover 330 is arranged on the top wall of the housing 310 to form a complete sealed space by matching with the housing 310 and the end cover 321, wherein a plurality of rollers 322 are rotatably arranged at the bottom of the drawer 320, a slide rail 311 is arranged on the housing 310 corresponding to the position, the rollers 322 are matched with the slide rail 311 to realize a pull-out connection between the drawer 320 and the housing 310, so as to take the drawer 320 out of a cold storage area, Is convenient to carry.
Referring to fig. 9 and 12, the modified atmosphere package 410 comprises a modified atmosphere film 410 and a modified atmosphere film 410 accommodating cavity, the modified atmosphere film 410 accommodating cavity is disposed on the inner wall of the storage device 300, the modified atmosphere film 410 is used for separating nitrogen from oxygen, and the modified atmosphere film 410 accommodating cavity cooperate to form a closed space.
Referring to fig. 2, 4 and 5, a locking device is further disposed on the housing 310, the tightening device 800 is disposed at a connection position between the end cap 321 and the housing 310 and is used for locking and sealing the end cap 321 to the housing 310, the locking device includes a triangular connection frame 811, a handle lever 812, a guide lever 813 and a rotating wheel 814, the connection frame 811 is rotatably connected to the housing 310, the handle lever 812, the rotating wheel 814 and the guide lever 813 are all connected to the connection frame 811, a locking area is disposed on the end cap 321, and a limit plate 816 is disposed on the locking area.
The rotating wheel 814 is fastened to the stopper 816 of the locking region to limit the drawer 320 from being pulled out of the housing 310, so as to ensure the locking of the cap 321 on the housing 310, and thus the sealing performance of the storage device 300; the rotation wheel 814 is guided into a guide hole 815 which is arranged on the end cover 321 in a penetrating way, and then the rotation wheel 814 is guided to rotate to a locking area by taking the connecting position of the connecting frame 811 and the end cover 321 as a rotation center, so that the accuracy of the locking device is ensured.
When the rotating wheel 814 is fastened to the limit plate 816, the storage device 300 is in a locked state; when wheel 814 is rotated away from the locked region, storage device 300 is unlocked.
When the storage device 300 needs to be locked, the handle lever 812 is rotated, so that the rotating wheel 814 is buckled to the limit plate 816 under the limit of the guide hole 815; when the storage device 300 needs to be opened, the handle lever 812 is rotated in a reverse direction, so that the wheel 814 is separated from the stopper plate 816 under the restriction of the guide hole 815, and the storage device 300 can be opened.
In addition, the locking device is provided on opposite sides in the width direction of the storage device 300 by two triangular connection frames 811 (see fig. 13 and 14), and the double-sided fastening helps to improve the sealing effect; the end cap 321 and the drawer 320 of the housing 310 are provided with sealing strips, so that the sealing effect of the storage device 300 is improved, and the vacuum effect is prevented from being influenced by external air entering the sealing cavity.
Referring to fig. 2, 9 and 12, a vacuum pump 500 is communicated with the receiving cavity of the modified atmosphere film 410 for extracting the gas in the receiving cavity of the modified atmosphere film 410, the invention creatively arranges a modified atmosphere film 410 assembly 400 in the storage device 300, and exhausts the oxygen in the air inside the storage device 300 by matching the vacuum pump 500 with the modified atmosphere film 410, so as to obtain a gas atmosphere rich in nitrogen and poor in oxygen inside the storage device 300 for keeping food fresh, thereby reducing the oxygen content in the storage device 300, wherein the following two specific embodiments are included:
example 1
Referring to fig. 9, 10 and 11, the modified atmosphere film 410 accommodating chamber is disposed on the housing 330, the modified atmosphere film 410 accommodating chamber is communicated with the storage device 300, the modified atmosphere film 410 covers the communication port between the modified atmosphere film 410 accommodating chamber and the storage device 300, the modified atmosphere film 410 is configured such that more oxygen in the storage device 300 permeates through the modified atmosphere film 410 into the modified atmosphere film 410 accommodating chamber than nitrogen, an oxygen-rich space is formed in the modified atmosphere film 410 accommodating chamber, the modified atmosphere film 410 accommodating chamber is communicated with a vacuum tube 510, the other end of the vacuum tube 510 is communicated with a vacuum pump 500, the vacuum pump 500 is used for pumping the gas in the oxygen-rich space, at this time, the gas pressure in the modified atmosphere film 410 accommodating chamber is continuously reduced, the oxygen in the storage device 300 space outside the modified atmosphere film 410 accommodating chamber is continuously introduced into the oxygen-rich space in the modified atmosphere film 410 accommodating chamber through the modified atmosphere film 410, and the oxygen content in the storage device 300 space is gradually reduced.
It should be noted that the working principle of this embodiment 1 is as follows:
the vacuum pump 500 and the gas membrane are adopted, the modified atmosphere membrane 410 is composed of the high molecular oxygen-philic group, oxygen is more easily attached to the modified atmosphere membrane 410, the gas membrane accommodating cavity is vacuumized by the vacuum pump 500, and at the moment, gas outside the gas membrane accommodating cavity is required to enter and is required to pass through the modified atmosphere membrane 410, so that more oxygen in the storage device 300 is pumped out, and the effect of reducing the oxygen concentration in the storage device 300 is achieved.
Example 2
Referring to fig. 12, 13, 14 and 15, the modified atmosphere film 410 accommodating chamber is used for communicating the outside air with the storage device 300, at least one modified atmosphere film 410 is provided and covers the communication port between the storage device 300 and the outside air, the modified atmosphere film 410 is configured to allow more oxygen in the storage device 300 to penetrate through the modified atmosphere film 410 and enter the accommodating chamber of the modified atmosphere film 410 than nitrogen in the storage device 300, the modified atmosphere film 410 accommodating chamber is configured as a supporting frame 421, the supporting frame 421 is detachably mounted on the wall of the housing 330, the supporting frame 421 has a first surface 422 and a second surface 423 which are parallel to each other, the first surface 422 is communicated with the outside air, the second surface 423 is communicated with the storage device 300, the first surface 422 is communicated with the second surface 423 to form an air duct, the modified atmosphere film 410 is two planar modified atmosphere films 410, the two planar modified atmosphere films 410 are respectively laid on the first surface 422 and the second surface 423, the atmosphere control film 410 and the supporting frame 421 form a nitrogen-rich space, the storage device 300 is communicated with a vacuum tube 510, the other end of the vacuum tube 510 is communicated with a vacuum pump 500, the vacuum pump 500 is used for extracting gas in the storage device 300, the gas in the storage device 300 is extracted, the inside of the storage device 300 is under negative pressure, and nitrogen in the outside air enters the space in the storage device 300 under pressure, so that the oxygen concentration in the space in the storage device 300 is diluted and reduced.
It should be noted that the working principle of this embodiment 2 is as follows:
the vacuum pump 500 is used for adding the modified atmosphere film 410, the modified atmosphere film 410 is used for separating nitrogen from oxygen, the nitrogen transmission rate is far higher than that of oxygen, the principle is that a polymer group is arranged on the surface of the modified atmosphere film 410, the group is close to nitrogen, the nitrogen is easily coated on the film, the nitrogen is easily transmitted, when the vacuum pump 500 inhales, gas inside the storage device 300 is pumped out, the pumped gas is normal nitrogen and oxygen mixed gas, and due to the negative pressure in the storage device 300, the nitrogen in the outside air penetrates through the modified atmosphere film 410 and enters a compartment under pressure, so that the oxygen concentration in the storage device 300 is reduced, and the effect of keeping fresh is achieved by inhibiting the respiration.
It should be noted that, in the embodiment 1, since the storage device 300 is completely sealed from the outside, when the vacuum pump 500 sucks the air, no outside air is supplemented, and the air pressure in the storage device 300 is in a negative pressure state after the oxygen reduction operation is performed inside the storage device 300, whereas in the embodiment 2, the storage device 300 is communicated with the outside air through the modified atmosphere film 410, and when the vacuum pump 500 sucks the air, the outside nitrogen continuously enters the storage device 300 through the modified atmosphere film 410, so the air pressure in the storage device 300 is always kept in balance with the outside atmospheric pressure.
Referring to fig. 6, 7, 8 and 16, the storage device 300 is further provided with a signal element group 600 and a control system 700, the signal element group 600 is used for detecting the gas composition state in the storage device 300 and the physical position state of the storage device 300 in real time, the control system 700 is electrically connected to the vacuum pump 500 and the signal element group 600, and the control system 700 is used for receiving an electrical signal sent by the signal element group 600 and controlling the working state of the vacuum pump 500 according to the state of the electrical signal.
Referring to fig. 6, the signal element group 600 includes an oxygen concentration sensor 610 and a drawer 320 detection device, the oxygen concentration sensor 610 is disposed inside the storage device 300 and is used for monitoring the oxygen content value in the storage device 300 in real time and converting the oxygen content value into an electric signal to be transmitted to the controller 730, and the drawer 320 detection device is configured to generate a drawer 320 closing signal and transmit the drawer 320 closing signal to the controller 730 after the drawer 320 is completely pushed into the housing 310.
In an embodiment of the present invention, the oxygen concentration sensor 610 detects the oxygen concentration in real time, starts oxygen extraction after reaching a set oxygen concentration value, and stops oxygen extraction after reaching a target value, the oxygen concentration sensor 610 adopts a zirconia oxygen concentration sensor 610, and the basic working principle thereof is as follows: under certain conditions, a potential difference is generated by the difference in oxygen concentration between the inside and outside of zirconia, and the greater the difference in concentration, the greater the potential difference, an electrical signal is generated by the potential difference, thereby monitoring the oxygen concentration in the storage device 300.
In other embodiments of the present invention, the oxygen concentration sensor 610 may be another sensor type, and is not limited herein.
In an embodiment of the present invention, the detection device of the drawer 320 is configured as a contact switch, the contact switch is disposed at the tail of the drawer 320, when the drawer 320 is completely inserted into the housing 310, the contact switch is electrified by sensing to generate a closing signal of the drawer 320, when the door is opened, it is determined that there is an action of pulling the drawer 320, oxygen pumping is stopped, and when the door is closed for a period of time, oxygen pumping is started.
In other embodiments of the present invention, the drawer 320 detection device may also be configured as an infrared sensor, which is not limited herein.
Referring to fig. 7 and 8, the control system 700 includes: the vacuum pump comprises a display screen 710, a control panel 720 and a controller 730, wherein the display screen 710 and the control panel 720 are electrically connected to the controller 730, the controller 730 is electrically connected to the signal element group 600 and the vacuum pump 500 at the same time, the controller 730 is used for receiving and processing an electrical signal of the signal element group 600, the controller 730 is used for converting the electrical signal of the signal element group 600 into a digital signal and transmitting the digital signal to the display screen 710, the digital signal is displayed by the display screen 710, the control panel 720 is used for presetting an environmental parameter threshold value in the storage device 300 and displaying the preset environmental parameter threshold value through the display screen 710, and the controller 730 controls the working state of the vacuum pump 500 according to the environmental parameter threshold value and the electrical signal.
The display panel is provided with an oxygen concentration display device in the modified atmosphere drawer 320, so that the oxygen concentration condition in the drawer 320 can be displayed at any time. In addition, threshold adjustment can be performed on the oxygen concentration in the drawer 320 on the control panel 720, so that a user can really feel the working condition in the drawer 320 through the display screen 710, the oxygen in the drawer 320 is controlled in real time, and meanwhile, in the refrigerator production and manufacturing link, the whole refrigerator can be inspected by judging the oxygen reduction condition.
Referring to fig. 7 and 8, the controller 730 is configured as an integrated circuit board, the display and the control board 720 are electrically connected to the integrated circuit board, and the controller 730 is provided with a computing chip, and the computing chip is internally installed with a computing program for receiving and storing data set by the control board 720 and processing electrical signals received from the signal element group 600.
Referring to fig. 16, it should be noted that, in the above embodiment 1, the control method of the control system 700 includes:
s1, presetting an environmental parameter threshold value in the storage device 300 through the control panel 720, displaying the set value of the environmental parameter threshold value through the display screen 710, and displaying the current oxygen content value in the storage device 300 through the display screen 710;
s2, the controller 730 receives the electrical signal transmitted by the oxygen concentration sensor 610 in real time to compare the relationship between the current oxygen content value in the storage device 300 and the preset environmental parameter threshold, when the current oxygen content value in the storage device 300 is greater than the environmental parameter threshold, the controller 730 controls the vacuum pump 500 to start, and the vacuum pump 500 pumps the gas in the oxygen-enriched space in the modified atmosphere module 410;
s3, the oxygen-enriched space in the accommodating cavity of the modified atmosphere film 410 is pumped out, the internal pressure is reduced, and the oxygen in the space of the storage device 300 outside the accommodating cavity of the modified atmosphere film 410 continuously enters the oxygen-enriched space in the accommodating cavity of the modified atmosphere film 410 through the modified atmosphere film 410 because the modified atmosphere film 410 is configured such that more oxygen in the storage device 300 than nitrogen enters the accommodating cavity of the modified atmosphere film 410, and the oxygen content in the space of the storage device 300 is gradually reduced;
s4, the oxygen concentration sensor 610 monitors the oxygen content in the space of the storage device 300 in real time and transmits the value to the controller 730 in real time, because the vacuum pump 500 is started to continuously extract the gas in the oxygen-enriched space of the accommodating chamber of the controlled atmosphere membrane 410, the oxygen content in the space of the storage device 300 is gradually reduced, when the oxygen concentration sensor 610 detects that the oxygen content in the space of the storage device 300 reaches the threshold value of the environmental parameter in the storage device 300 preset by the control panel 720, the controller 730 receives the value signal detected by the oxygen concentration sensor 610;
s5, the controller 730 controls the vacuum pump 500 to stop vacuum, and the oxygen reduction operation of the storage apparatus 300 is completed.
According to the first concept of the invention, the modified atmosphere film accommodating cavity is arranged on the shell cover and is communicated with the storage device, the modified atmosphere film is coated on a communication port of the modified atmosphere film accommodating cavity and the storage device, the modified atmosphere film accommodating cavity is communicated with a vacuum tube, the other end of the vacuum tube is communicated with a vacuum pump, the vacuum pump is used for extracting gas in the oxygen-enriched space, the air pressure in the modified atmosphere film accommodating cavity is reduced, the modified atmosphere film is configured in such a way that more oxygen in the storage device outside the modified atmosphere film accommodating cavity penetrates through the modified atmosphere film than nitrogen and enters the modified atmosphere film accommodating cavity, therefore, the oxygen in the storage device space outside the modified atmosphere film accommodating cavity continuously enters the oxygen-enriched space of the modified atmosphere film accommodating cavity through the modified atmosphere film to be extracted, the oxygen content in the storage device space is gradually reduced, and the oxygen concentration is reduced, and the fresh-keeping effect is achieved through the respiratory inhibition effect.
According to the second concept of the present invention, the modified atmosphere film accommodating chamber is used for communicating the outside air with the storage device, the modified atmosphere film is provided with at least one communicating port which is coated on the storage device and the outside air, the storage device is communicated with a vacuum tube, the other end of the vacuum tube is communicated with a vacuum pump, when the vacuum pump sucks air, the gas in the storage device is pumped out, wherein the pumped gas is normal nitrogen and oxygen mixed gas, the negative pressure in the storage device, the modified atmosphere film is configured in such a way that more nitrogen in the outside air permeates through the modified atmosphere film than oxygen into the storage device, the oxygen content in the space of the storage device is gradually reduced, thereby reducing the oxygen concentration, and achieving the effect of fresh keeping by suppressing respiration.
The third idea of the invention is that the environmental parameter threshold value in the storage device is preset by the control panel, the setting value of the environmental parameter threshold value is displayed by the display screen, the display screen simultaneously displays the current oxygen content value in the storage device, the controller receives the electric signal transmitted by the oxygen concentration sensor in real time, so as to compare the relation between the current oxygen content value in the storage device and the preset environmental parameter threshold value, when the current oxygen content value in the storage device is larger than the environmental parameter threshold value, the controller controls the vacuum pump to start, the oxygen content in the space of the storage device is gradually reduced, when the oxygen concentration sensor detects that the oxygen content value in the storage device space reaches the environmental parameter threshold value in the preset storage device of the control panel, the controller controls the vacuum pump to stop vacuumizing, and then the oxygen reduction work of the storage device is completed once, so that the automation of the oxygen reduction operation is realized.
In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A refrigerator, comprising:
a low temperature storage chamber to form a low temperature storage space;
the door body is used for opening or closing the low-temperature storage chamber;
it is characterized by also comprising:
a storage device disposed in the low-temperature storage space;
the modified atmosphere membrane assembly comprises a modified atmosphere membrane and a modified atmosphere membrane accommodating cavity, and the modified atmosphere membrane accommodating cavity is arranged on the inner wall of the storage device;
the vacuum pump is communicated with the storage device and is used for extracting gas in the storage device;
the signal element group is arranged on the storage device and used for detecting the gas composition state in the storage device and the physical position state of the storage device in real time;
and the control system is electrically connected with the vacuum pump and the signal element group, and is used for receiving the electric signals sent by the signal element group and controlling the vacuum pump according to the state of the electric signals.
2. The refrigerator of claim 1, wherein the storage device comprises:
the shell is limited into a vacuum storage space, and a drawer opening is formed in one side wall of the shell;
a drawer defined as a placing space for placing food, the drawer being inserted into the housing in a push-pull manner from a drawer opening, the drawer being provided with an end cap, the end cap being engaged with the drawer opening of the housing so as to open or seal the vacuum storage space;
and the shell cover is arranged on the top wall of the shell and matched with the shell and the end cover to form a complete sealed space, and the air-conditioning film accommodating cavity is arranged on the shell cover.
3. The refrigerator of claim 2, wherein the modified atmosphere housing chamber is disposed on the housing and is in communication with the storage device, the modified atmosphere housing is disposed at a communication port between the modified atmosphere housing chamber and the storage device, and the modified atmosphere housing is configured such that more oxygen in the storage device permeates through the modified atmosphere housing chamber than nitrogen, and forms an oxygen-enriched space in the modified atmosphere housing chamber.
4. The refrigerator of claim 3, wherein the modified atmosphere chamber is connected to a vacuum tube, the other end of the vacuum tube is connected to a vacuum pump, and the vacuum pump is used for pumping the gas in the oxygen-enriched space.
5. The refrigerator of claim 2, wherein the modified atmosphere storage chamber is configured to communicate outside air with the storage device, the modified atmosphere is provided with at least one modified atmosphere film covering the communication port of the storage device and the outside air, and the modified atmosphere film is configured such that more oxygen permeates the modified atmosphere film into the modified atmosphere storage chamber than nitrogen in the storage device.
6. The refrigerator of claim 5, wherein the modified atmosphere housing chamber is configured as a support frame detachably mounted on the housing wall, the support frame has a first surface and a second surface parallel to each other, the first surface is in communication with the outside air, the second surface is in communication with the storage device, the first surface is in communication with the second surface to form the air duct, the modified atmosphere film is two planar modified atmosphere films, the two planar modified atmosphere films are respectively laid on the first surface and the second surface, and the modified atmosphere film and the support frame together form the nitrogen-rich space.
7. The refrigerator of claim 6, wherein the storage unit is connected to a vacuum tube, and the other end of the vacuum tube is connected to a vacuum pump for pumping gas from the inside of the storage unit.
8. The refrigerator of claim 1, wherein the signal element group comprises:
the oxygen concentration sensor is arranged inside the storage device and used for monitoring the oxygen content value in the storage device in real time and converting the oxygen content value into an electric signal to be transmitted to the controller.
And a drawer detecting device configured to generate a drawer closing sealing signal and transmit the drawer closing signal to the controller after the drawer is completely pushed into the housing.
9. The refrigerator according to claim 2, further comprising:
and the locking device is arranged at the joint of the end cover and the shell and is used for locking and sealing the end cover to the shell so as to form a sealed vacuum storage space.
10. The refrigerator of claim 1, wherein the control system comprises: the display screen, control board and controller, the display screen all connects in the controller with the control board, and the controller electricity is connected in signal component group and vacuum pump simultaneously, the controller is used for receiving and handling the signal of telecommunication of signal component group, the controller is used for turning into digital signal with the signal of signal component group and gives the display screen for, and show through the display screen, the control board is used for predetermineeing the environmental parameter threshold value in the storage device, and show predetermined environmental parameter threshold value through the display screen, the controller is according to environmental parameter threshold value and the operating condition of electric signal control vacuum pump.
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|---|---|---|---|
| CN202010762994.6A CN114061203A (en) | 2020-07-31 | 2020-07-31 | A kind of refrigerator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010762994.6A CN114061203A (en) | 2020-07-31 | 2020-07-31 | A kind of refrigerator |
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| CN114061203A true CN114061203A (en) | 2022-02-18 |
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| CN202010762994.6A Pending CN114061203A (en) | 2020-07-31 | 2020-07-31 | A kind of refrigerator |
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