CN105650990A - Vacuumizing device for refrigerator storage box and refrigerator - Google Patents
Vacuumizing device for refrigerator storage box and refrigerator Download PDFInfo
- Publication number
- CN105650990A CN105650990A CN201410628783.8A CN201410628783A CN105650990A CN 105650990 A CN105650990 A CN 105650990A CN 201410628783 A CN201410628783 A CN 201410628783A CN 105650990 A CN105650990 A CN 105650990A
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- refrigerator
- vacuum extractor
- supporting plate
- union lever
- vacuum
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Abstract
The invention provides a vacuumizing device for a refrigerator storage box. The vacuumizing device comprises a machine box, a base and a supporting plate. The machine box is connected with the upper portion of the supporting plate. The base is connected to the lower portion of the supporting plate. The machine box is internally provided with a controller, a transmission device and a vacuumizing device body. The transmission device and the vacuumizing device body are both electrically connected with the controller. Under the control of the controller, the transmission device is used for connecting or disconnecting the vacuumizing device body and the storage box to be vacuumized, and the vacuumizing device body is used for vacuumizing the storage box. The invention further provides a refrigerator. According to the vacuumizing device for the refrigerator storage box and the refrigerator, the overall structure is simple, and vacuumizing process automation is achieved; the vacuumized storage box is placed at a low temperature to enable food to be in a specific negative pressure state, so that breeding of aerobic bacteria is effectively restrained, food oxidation is delayed, mildewing and spoilage are prevented, and the loss of vitamins is reduced.
Description
Technical field
The present invention relates to fridge freshness retaining vacuum extractor, specifically, it relates to a kind of article storing box in refrigerator vacuum extractor and refrigerator.
Background technology
Owing to refrigerator storage food is under atmospheric pressure environment, do not close, easy breed bacteria, causes food spoilage, for expanding fridge freshness retaining function, original refrigerator functions basis increases the vacuum extractor of antistaling container, part refrigerator vacuum freshness retaining complete assembly is arranged on refrigerator cold-storage indoor, occupies larger space, and is fixed in casing due to vacuum-pumping fresh-keeping, it is immovable, later fault handling is more difficult. Also has vacuum refreshing drawer at present, inner air need to be extracted out time fresh-keeping, general drawer and the more difficult sealing of lid, and generally be difficult to bear lower negative pressure value in two dimensional structure because of drawer shape, the easy modification of container, impact sealing, does not reach negative pressure fresh-keeping effect truly, due to the limitation of preservation drawer function, fresh-keeping effect is undesirable.
Summary of the invention
It is an object of the invention to solve above-mentioned deficiency, provide a set of reliable article storing box in refrigerator vacuum extractor being suitable for and the refrigerator adopting this device for expanding refrigerator using function.
For solving the problems of the technologies described above, the present invention is achieved by the following technical solutions:
On the one hand, the present invention provides a kind of article storing box in refrigerator vacuum extractor, comprise cabinet, base, supporting plate, described cabinet is connected with supporting plate top, described base is connected to supporting plate bottom, it is provided with controller, transmission mechanism, vacuum extractor in described cabinet, described transmission mechanism, vacuum extractor are all electrically connected with described controller, under the control of described controller, described transmission mechanism is used for break-make vacuum extractor and storage thing box to be vacuumized, and described vacuum extractor is used for vacuumizing to storage thing box.
Further, described transmission mechanism comprises miniature motor and press button thereof, transmitting gear, union lever, described Miniature electric machine output shaft connection for transmission gear, and described union lever is provided with tooth bar and engages with transmitting gear, and transmitting gear drives union lever to move up and down;
Described vacuum extractor comprises vacuum pump, vacuum pressure switch, and described vacuum pressure switch restriction vacuum pump is bled negative pressure value; When the vacuum pressure in storage thing box reaches setting negative pressure value, miniature motor reversal drives union lever to move up, and leaves storage thing box;
Described union lever has cavity, it is provided with flexible rubber hose between described vacuum pump suction side and union lever, the cavity of vacuum pump suction side, vacuum pressure switch, union lever is connected to form vent line by flexible rubber hose, and by pressing press button, evacuation can complete automatically.
Further, the two ends up and down of described union lever are equipped with limit switch, move up and down maximum range for control linkage bar, and the upper end of described union lever is provided with limited block.
Further, the bottom of described union lever is provided with joint flange, and the bottom of joint flange is provided with lower flange, and lower flange is provided with suction mouth sealing ring, for the connection sealing of union lever with storage thing box, is provided with O shape sealing-ring between joint flange and union lever.
Further, described miniature motor is for reversing deceleration motor.
Further, rotation structure it is provided with: the two ends that described base is connected side with supporting plate are provided with the first cylindrical hole between described base and supporting plate, it is provided with fixing voussoir wherein in first cylindrical hole of one end, fixing voussoir and base are connected as a single entity, described supporting plate and floor installation side are provided with the 2nd cylindrical hole, it is provided with mobile voussoir in 2nd cylindrical hole, mobile voussoir and supporting plate are connected as a single entity, compression spring and adjustment screw rod it is provided with in first cylindrical hole of the base the other end, adjustment screw rod is arranged in permanent sleeve, and described compression spring contacts with mobile voussoir;
Under the effect of compression spring, described mobile voussoir and fixing voussoir keep bonding force, and both are provided with trapezoidal engagement tooth at the contravention that connects.
When rotating base, fixing voussoir rotates with base, due to the trapezoidal engagement tooth between two voussoirs, under the effect on trapezoidal inclined-plane, mobile voussoir is moved axially, when going to 90 ��, the compression spring of mobile voussoir aft end face promotes the trapezoidal tooth of two voussoirs to engage, location. When base returns level attitude, umklapp process is consistent with said process.
Further, described supporting plate is provided with fixed orifices, and refrigerator door liner is provided with corresponding hook, links up with and is hung on refrigerator door liner by whole device through the fixed orifices on supporting plate.
Further, described supporting plate is provided with magnet, and refrigerator door liner is provided with magnetic switch, and magnetic switch contact magnet is used for whole vacuum extractor and connects refrigerator power supply;
Socket is equipped with on described supporting plate top, for switching on power when whole vacuum extractor is placed in beyond refrigerator.
Further, bottom described base, it is provided with cushion, when using for refrigerator outside, supports whole device.
On the other hand, the present invention also provides a kind of refrigerator, adopts above-mentioned vacuum extractor.
The vacuum extractor of the present invention is a kind of self-contained system, it is possible to hangs elsewhere on refrigerator door liner or in refrigerator and uses, it is possible to places it in refrigerator outside and uses;
When using in refrigerator, the base of evacuator device can be put storage thing box, find time complete, deposit position can be placed on by bar storage box, base be rotated and packs up, do not take refrigerator space.
When refrigerator outside uses, base is rotated to horizontal direction, the corresponding space placed of desktop level can be placed on, connect external source and can find time.
Compared with prior art, the advantage of the present invention and positively effect are:
One-piece construction of the present invention is simple, it is achieved vacuum automatization. Storage thing box after vacuumizing allows food under specific negative pressure state under being put in low temperature, effectively suppresses there is foster bacterial reproduction, delays Food Oxidation, prevent mouldy corruption, reduces the loss of VITAMIN.
Accompanying drawing explanation
Fig. 1 is the front view of article storing box in refrigerator vacuum extractor specific embodiment of the present invention;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the A-A sectional view of Fig. 1;
Fig. 4 is the B-B sectional view of Fig. 3;
Fig. 5 is the C-C part sectioned view of Fig. 3 and the local structure schematic diagram at I place;
Fig. 6 is the D-D part sectioned view of Fig. 3;
Fig. 7 is the E-E part sectioned view of Fig. 4;
Fig. 8 is the limit switch schematic diagram of Fig. 7;
Fig. 9 is base retracted state figure.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
The vacuum extractor of the present embodiment, for being taken away by the air in article storing box in refrigerator, makes food and atmospheric isolation in storage thing box.
With reference to, shown in Fig. 1 and 2, this embodiment is a kind of article storing box in refrigerator vacuum extractor, comprises cabinet 01, supporting plate 02, base 03, and cabinet 01 is fixedly connected with the top of supporting plate 02, and base 03 is connected to the bottom of supporting plate 02, storage thing box 04 is placed on base 03;
As shown in Fig. 3,4,6, in cabinet 01, it is provided with controller 05;
Miniature motor 06 and press button 07 thereof, miniature motor 06 is for reversing deceleration motor;
Transmitting gear 08, union lever 09, the output shaft connection for transmission gear 08 of miniature motor 06, union lever 09 is provided with tooth bar and engages with transmitting gear 08, and transmitting gear 08 drives union lever 09 to move up and down;
Minipump 11, vacuum pressure switch 12, vacuum pressure switch 12 limits vacuum pump 11 and bleeds negative pressure value, and when the vacuum pressure in storage thing box 04 reaches setting negative pressure value, the reversion of miniature motor 06 drives union lever 09 to move up;
Wherein, union lever 09 has cavity 10, is provided with silica gel hose 13 between the suction side of vacuum pump 11 and union lever 09, and the cavity of vacuum pump suction side, vacuum pressure switch, union lever is connected to form vent line by silica gel hose 13;
The bottom of union lever 09 is provided with joint flange 14, and the bottom of joint flange 14 is provided with lower flange 15, and lower flange 15 is provided with sealing-ring 16, for the connection sealing of union lever 09 with storage thing box 04; O shape sealing-ring 17 it is provided with between joint flange 14 and union lever 09.
As shown in FIG. 7 and 8, the two ends up and down of union lever 09 are equipped with limit switch 18, move up and down maximum range for control linkage bar 09; The upper end of union lever 09 is provided with limited block 19.
By pressing press button 07, evacuation can complete automatically, and carrying out practically program is as follows:
Pressing Minisize press button switch 07, motion program starts, and miniature motor 06 rotates, the output shaft connection for transmission gear 08 of miniature motor 06, thus band nutating gear 08 rotates, and transmitting gear 08 engages with the tooth bar of union lever 09 and union lever 09 is moved up and down.
Lower flange 15 moves to sealing-ring 16 and contacts with storage thing box 04, miniature motor 06 is rotated further, now current of electric increases, the moment of torsion of the miniature motor 06 driven needed for sealing load when increasing to certain value, moment of torsion increases, current of electric increases, after increasing to ultimate value, controller 05 is miniature motor 06 power-off stall after signal being detected, vacuum pump 11 connected by controller 05 simultaneously, vacuum pump 11 starts to extract gas in storage thing box 04, when being evacuated to set(ting)value, vacuum pressure switch 12 signals, controller 05 detects signal, vacuum pump 11 stops bleeding, drive the reversion of miniature motor 06 to drive union lever 09 to move up simultaneously, the limited block 19 of union lever 09 upper side encounters upper end limit switch 18, upper end limit switch 18 controller 05 that signals controls whole EP (end of program).
As shown in Figure 5, rotation structure is set between base 03 and supporting plate 02, specific as follows:
The two ends that base 03 is connected side with supporting plate 02 are provided with the first cylindrical hole 20, it is provided with fixing voussoir 21 wherein in first cylindrical hole 20 of one end, fixing voussoir 21 is connected as a single entity with base 03 and rotates with base 03, supporting plate 02 and base 03 are installed side and are provided with the 2nd cylindrical hole 22, mobile voussoir 23 it is provided with in 2nd cylindrical hole 22, mobile voussoir 23 is connected as a single entity with supporting plate 02, respect thereto 03 is static do not move at circumferential direction, compression spring 24 and adjustment screw rod 25 it is provided with in first cylindrical hole 20 of base 03 the other end, adjustment screw rod 25 is arranged in permanent sleeve 26, compression spring 24 contacts with mobile voussoir 23, two voussoirs contravention that connects is provided with trapezoidal engagement tooth 27, under the effect of compression spring 24, mobile voussoir 23 and fixing voussoir 21 keep the combination of two profiles of tooth,Adjustment screw rod 25 adjust fixing voussoir 21 and mobile voussoir 23 in conjunction with pressure.
When rotating base 03, fixing voussoir 21 rotates with base 03, owing to having trapezoidal engagement tooth 27 between two voussoirs, it is trapezoidal in conjunction with grooved, under the effect on trapezoidal inclined-plane, mobile voussoir 23 is moved axially, when base 03 entirety goes to 90 ��, the compression spring 24 of mobile voussoir 23 aft end face promotes the trapezoidal tooth of two voussoirs to engage, location.
When base 03 returns level attitude, umklapp process is consistent with said process.
Fig. 9 is that base 03 regains rear state, takies space for reducing vacuum extractor in refrigerator, and base 03 is retracted to vertical state.
The vacuum extractor of the present embodiment, it is possible to hang and use on refrigerator door liner 28, it is possible to place it in refrigerator outside and use;
Supporting plate 02 is provided with three fixed orificess, and the correspondence position of door lining 28 arranges three hooks 29, and whole device is hung on refrigerator door liner 28 by the fixed orifices of hook 29 on supporting plate 02; Supporting plate 02 is provided with magnet 30, and refrigerator door liner 28 is provided with magnetic switch 31, connects refrigerator power supply for this evacuator device.
Vacuum extractor is placed on when using in refrigerator, three hooks 29 of supporting plate 02 are fixed on refrigerator door liner 28, and supporting plate 02 and door lining 28 laminating, be provided with magnetic switch 31 owing to door serves as a contrast 28, because the magnet 30 on supporting plate 02 acts on and conducting, connect controller 05 power supply.
Using when needing off line and vacuum extractor can be taken from door lining, now because the magnet 30 of supporting plate 02 leaves magnetic switch 31, door serves as a contrast 28 power cut-offs. Magnetic switch 31 plays safeguard protection effect.
Supporting plate 02 top is provided with socket 32, for switching on power when device is placed in beyond refrigerator. Vacuum extractor moves out of refrigerator can use external power supply plug, directly inserts socket 32, and vacuum extractor can off line use.
When using in refrigerator, the base 03 of evacuator device can being put storage thing box 04, find time complete, bar storage box 04 is placed on deposit position, is rotated by base 03 and packs up, does not take refrigerator space.
When refrigerator outside uses, base 03 is rotated to horizontal direction, the corresponding space placed of desktop level can be placed on, connect external source and can find time.
It is provided with cushion 33 bottom base 03, when using for refrigerator outside, supports whole device.
Visible, this vacuum extractor is a kind of self-contained system, can hang elsewhere on refrigerator door liner and in refrigerator and use, it is possible to use in refrigerator outside.
In sum, use in the vacuum extractor refrigerator of the present embodiment and can hang at refrigerator door liner, if off line uses vacuum extractor, vacuum extractor is moved out of refrigerator, base 03 is overturn 90 �� and places desktop or other table tops, switch on power and vacuumize.
The whole working process of this vacuum extractor is described below:
Step 1, the storage thing box 04 that need to vacuumize are put into above base 03, with reference to Fig. 3.
Step 2, press press button 07, the miniature motor 06 rotating band bar 09 that is dynamically connected moves downward, when the trim of the suction mouth sealing ring 16 on connecting rod 09 with storage thing box 04 contacts, miniature motor 06 electric current is increased, when increasing to setting electric current, namely the required current value driving moment of torsion of sealing load is pressed, controller 05 detects signal, the stall of miniature motor 06, open by preset program vacuum pump 11, find time to start, it is evacuated to setting negative pressure value, vacuum pressure switch 12 disconnects, controller 05 carries out next step program, the reversion of miniature motor 06 drives union lever 09 to move up, inhale the trim disengagement of mouth sealing ring 16 with storage thing box 04.When union lever 09 rising to top, EP (end of program).
Being provided with security procedure, press press button 07 when not putting storage thing box 04, union lever 09 moves to bottom limit switch 18, and controller 05 carries out next step program after receiving signal, drives the reversion of miniature motor 06 to make union lever 09 be moved upward to top, EP (end of program).
Step 3, thing box will be stored up take out sealing, put to deposit position.
The above is only the better embodiment of the present invention, is not the restriction that the present invention does other form, and any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations. But every not departing from technical solution of the present invention content, any simple modification, equivalent variations and the remodeling above embodiment done according to the technical spirit of the present invention, still belongs to the protection domain of technical solution of the present invention.
Claims (10)
1. an article storing box in refrigerator vacuum extractor, it is characterized in that: comprise cabinet, base, supporting plate, described cabinet is connected with supporting plate top, described base is connected to supporting plate bottom, it is provided with controller in described cabinet, transmission mechanism, vacuum extractor, described transmission mechanism, vacuum extractor are all electrically connected with described controller, under the control of described controller, described transmission mechanism is used for break-make vacuum extractor and storage thing box to be vacuumized, and described vacuum extractor is used for vacuumizing to storage thing box.
2. article storing box in refrigerator vacuum extractor according to claim 1, it is characterized in that: described transmission mechanism comprises miniature motor and press button thereof, transmitting gear, union lever, described Miniature electric machine output shaft connection for transmission gear, described union lever is provided with tooth bar and engages with transmitting gear, and transmitting gear drives union lever to move up and down;
Described vacuum extractor comprises vacuum pump, vacuum pressure switch, and described vacuum pressure switch restriction vacuum pump is bled negative pressure value;
Described union lever has cavity, is provided with flexible rubber hose between described vacuum pump suction side and union lever, and the cavity of vacuum pump suction side, vacuum pressure switch, union lever is connected to form vent line by flexible rubber hose.
3. article storing box in refrigerator vacuum extractor according to claim 2, it is characterised in that: the two ends up and down of described union lever are equipped with limit switch, move up and down maximum range for control linkage bar, and the upper end of described union lever is provided with limited block.
4. article storing box in refrigerator vacuum extractor according to claim 2, it is characterized in that: the bottom of described union lever is provided with joint flange, the bottom of joint flange is provided with lower flange, and lower flange is provided with suction mouth sealing ring, is provided with O shape sealing-ring between joint flange and union lever.
5. article storing box in refrigerator vacuum extractor according to claim 2, it is characterised in that: described miniature motor is for reversing deceleration motor.
6. article storing box in refrigerator vacuum extractor according to claim 1, it is characterized in that: between described base and supporting plate, be provided with rotation structure: the two ends that described base is connected side with supporting plate are provided with the first cylindrical hole, it is provided with fixing voussoir wherein in first cylindrical hole of one end, fixing voussoir and base are connected as a single entity, described supporting plate and floor installation side are provided with the 2nd cylindrical hole, it is provided with mobile voussoir in 2nd cylindrical hole, mobile voussoir and supporting plate are connected as a single entity, compression spring and adjustment screw rod it is provided with in first cylindrical hole of the base the other end, adjustment screw rod is arranged in permanent sleeve, described compression spring contacts with mobile voussoir,
Under the effect of compression spring, described mobile voussoir and fixing voussoir keep bonding force, and both are provided with trapezoidal engagement tooth at the contravention that connects.
7. article storing box in refrigerator vacuum extractor according to claim 1, it is characterised in that: described supporting plate is provided with fixed orifices, and refrigerator door liner is provided with corresponding hook, links up with and is hung on refrigerator door liner by whole device through the fixed orifices on supporting plate.
8. article storing box in refrigerator vacuum extractor according to claim 7, it is characterised in that: described supporting plate is provided with magnet, and refrigerator door liner is provided with magnetic switch, and magnetic switch contact magnet is used for whole vacuum extractor and connects refrigerator power supply;
Socket is equipped with on described supporting plate top, for switching on power when whole vacuum extractor is placed in beyond refrigerator.
9. article storing box in refrigerator vacuum extractor according to claim 1, it is characterised in that: it is provided with cushion bottom described base, when using for refrigerator outside, supports whole device.
10. a refrigerator, it is characterised in that adopt vacuum extractor described in above-mentioned any claim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410628783.8A CN105650990A (en) | 2014-11-11 | 2014-11-11 | Vacuumizing device for refrigerator storage box and refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410628783.8A CN105650990A (en) | 2014-11-11 | 2014-11-11 | Vacuumizing device for refrigerator storage box and refrigerator |
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| Publication Number | Publication Date |
|---|---|
| CN105650990A true CN105650990A (en) | 2016-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410628783.8A Pending CN105650990A (en) | 2014-11-11 | 2014-11-11 | Vacuumizing device for refrigerator storage box and refrigerator |
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| CN (1) | CN105650990A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106813451A (en) * | 2016-12-02 | 2017-06-09 | 青岛海尔股份有限公司 | A kind of vavuum pump mounting box |
| CN107504752A (en) * | 2016-12-02 | 2017-12-22 | 青岛海尔股份有限公司 | A kind of vavuum pump mounting box |
| CN111578589A (en) * | 2020-05-08 | 2020-08-25 | 海信（山东）冰箱有限公司 | Refrigerator with a door |
| CN111578591A (en) * | 2020-05-08 | 2020-08-25 | 海信（山东）冰箱有限公司 | Refrigerator with a door |
| CN113623920A (en) * | 2020-05-08 | 2021-11-09 | 海信（山东）冰箱有限公司 | Refrigerator with a door |
| CN113623921A (en) * | 2020-05-08 | 2021-11-09 | 海信（山东）冰箱有限公司 | Refrigerator with a door |
| CN113623919A (en) * | 2020-05-08 | 2021-11-09 | 海信（山东）冰箱有限公司 | Refrigerator with a door |
| WO2021223281A1 (en) * | 2020-05-08 | 2021-11-11 | 海信（山东）冰箱有限公司 | Refrigerator |
| CN115468366A (en) * | 2021-06-11 | 2022-12-13 | 重庆海尔制冷电器有限公司 | Vacuum storage device, air exhaust control method and refrigerator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106813451A (en) * | 2016-12-02 | 2017-06-09 | 青岛海尔股份有限公司 | A kind of vavuum pump mounting box |
| CN107504752A (en) * | 2016-12-02 | 2017-12-22 | 青岛海尔股份有限公司 | A kind of vavuum pump mounting box |
| CN106813451B (en) * | 2016-12-02 | 2019-11-26 | 青岛海尔股份有限公司 | A kind of vacuum pump mounting box |
| CN107504752B (en) * | 2016-12-02 | 2019-12-06 | 青岛海尔股份有限公司 | Vacuum pump mounting box |
| CN113623921A (en) * | 2020-05-08 | 2021-11-09 | 海信（山东）冰箱有限公司 | Refrigerator with a door |
| WO2021223284A1 (en) * | 2020-05-08 | 2021-11-11 | 海信（山东）冰箱有限公司 | Refrigerator |
| CN111578589B (en) * | 2020-05-08 | 2021-04-30 | 海信（山东）冰箱有限公司 | Refrigerator with a door |
| CN113623920A (en) * | 2020-05-08 | 2021-11-09 | 海信（山东）冰箱有限公司 | Refrigerator with a door |
| CN111578589A (en) * | 2020-05-08 | 2020-08-25 | 海信（山东）冰箱有限公司 | Refrigerator with a door |
| CN113623919A (en) * | 2020-05-08 | 2021-11-09 | 海信（山东）冰箱有限公司 | Refrigerator with a door |
| WO2021223283A1 (en) * | 2020-05-08 | 2021-11-11 | 海信（山东）冰箱有限公司 | Refrigerator |
| CN111578591A (en) * | 2020-05-08 | 2020-08-25 | 海信（山东）冰箱有限公司 | Refrigerator with a door |
| WO2021223281A1 (en) * | 2020-05-08 | 2021-11-11 | 海信（山东）冰箱有限公司 | Refrigerator |
| CN111578591B (en) * | 2020-05-08 | 2021-12-07 | 海信（山东）冰箱有限公司 | Refrigerator with a door |
| CN113623919B (en) * | 2020-05-08 | 2022-04-19 | 海信（山东）冰箱有限公司 | Refrigerator with a door |
| JP7395013B2 (en) | 2020-05-08 | 2023-12-08 | ▲海▼信冰箱有限公司 | refrigerator |
| JP2023519441A (en) * | 2020-05-08 | 2023-05-10 | ▲海▼信冰箱有限公司 | refrigerator |
| CN115468366B (en) * | 2021-06-11 | 2023-11-03 | 重庆海尔制冷电器有限公司 | Vacuum storage device, air extraction control method and refrigerator |
| CN115468366A (en) * | 2021-06-11 | 2022-12-13 | 重庆海尔制冷电器有限公司 | Vacuum storage device, air exhaust control method and refrigerator |
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