CN102954642A - Refrigerator - Google Patents

Refrigerator Download PDF

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Publication number
CN102954642A
CN102954642A CN2011102523753A CN201110252375A CN102954642A CN 102954642 A CN102954642 A CN 102954642A CN 2011102523753 A CN2011102523753 A CN 2011102523753A CN 201110252375 A CN201110252375 A CN 201110252375A CN 102954642 A CN102954642 A CN 102954642A
Authority
CN
China
Prior art keywords
vavuum pump
branch road
bleeding
path
storage space
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN2011102523753A
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Chinese (zh)
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CN102954642B (en
Inventor
窦本和
李平安
刁文涛
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BSH Electrical Appliances Jiangsu Co Ltd
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BSH Electrical Appliances Jiangsu Co Ltd
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Filing date
Publication date
Application filed by BSH Electrical Appliances Jiangsu Co Ltd filed Critical BSH Electrical Appliances Jiangsu Co Ltd
Priority to CN201110252375.3A priority Critical patent/CN102954642B/en
Priority to EP12181277.0A priority patent/EP2562495B1/en
Priority to PL12181277T priority patent/PL2562495T3/en
Publication of CN102954642A publication Critical patent/CN102954642A/en
Application granted granted Critical
Publication of CN102954642B publication Critical patent/CN102954642B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—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
    • 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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  • 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)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

The invention relates to a refrigerator which comprises a storage space (2), a vacuum pump (3), an air suction path (4), a branch (5) and an electromagnetic valve (7), wherein the storage space (2) is capable of keeping the low-pressure state; the air suction path (4) is connected between the storage space (2) and the vacuum pump (3); the branch (5) is connected with the air suction path (4); during the work of the vacuum pump (3), the branch (5) is closed; when the work of the vacuum pump (3) is finished, the branch (5) is opened to convey external air to the air suction path (4); and the electromagnetic valve (7) is used for opening or closing the branch (5). According to the refrigerator, after the work of the vacuum pump (3) is finished, the electromagnetic valve (7) is switched on to open the branch (5); and after a predetermined time, the electromagnetic valve (7) is switched off to close the branch (5) until the work of the vacuum pump (3) is finished for the next time.

Description

Refrigerator
[technical field]
The present invention is about a kind of refrigerator and method of work thereof, particularly about a kind of refrigerator and method of work thereof with the storage space that can keep low-pressure state.
[background technology]
The refrigerator that article can be kept in the environment under low pressure is known in the prior art.This refrigerator has the storeroom (also being commonly called as in the industry " vacuum chamber ") that can find time usually, by detaching the gas in the storeroom is at least part of, air content in the storeroom reduces to weaken the oxidizing process of food, thereby has prolonged holding time and the quality of food.
Chinese invention patent CN 101331970B discloses a kind of vacuum fresh-keeping system and control method thereof, it comprise low-pressure chamber/vacuum chamber, vavuum pump and be connected to vavuum pump and low-pressure chamber between the path of bleeding, when vavuum pump was worked, the gas that is positioned at low-pressure chamber can be drawn out of by the path of bleeding.The path of bleeding has one and is connected external pressure with extraneous air) branch road that connects, be provided with one in this branch road in order to the magnetic valve of the switching situation of controlling branch road.When starting evacuation, control circuit board at first sends instruction magnetic valve is switched to the closed position, then restarts vavuum pump, in low-pressure chamber, reach predetermined vacuum level after, vavuum pump quits work.And then, control circuit board sends instruction magnetic valve is switched to the enable possition from the closed position, and extraneous air is imported in the path of bleeding with certain flow rate, seals the mechanical valve that is arranged on the low-pressure chamber with this pressure differential.
Close in the mode of branch road utilizing the normally open valve outage, the closure member of valve is mobile under the effect of mechanical force, this process is slower, might cause the extraneous air flow that flows in the path of bleeding large not, mechanical valve can't quick closedown, thereby produce the return-air phenomenon, namely extraneous air enters low-pressure chamber.In addition, the mechanical valve by low-pressure chamber is come pressurize fully after evacuation finishes, if mechanical valve goes wrong, extraneous air will soon enter in the low-pressure chamber.
[summary of the invention]
One object of the present invention is to solve at least one above-mentioned technical problem, thereby a kind of refrigerator with more reliable low pressure storage system is provided.
Therefore, an aspect of of the present present invention is about a kind of refrigerator.Refrigerator comprises: the storage space that can keep low-pressure state; Vavuum pump; The path of bleeding is connected between described storage space and the described vavuum pump; With the branch road of the described Path Connection of bleeding, when the work of described vavuum pump, described branch road is closed, and when described vavuum pump power cut-off, described branch road is opened with to the described delivery pathways extraneous air of bleeding; And in order to open or to close the magnetic valve of described branch road; It is characterized in that after described vavuum pump power cut-off, described magnetic valve is energized and opens described branch road, after the scheduled time, described magnetic valve is de-energized and makes described branch road cut out and be retained to next time vavuum pump power cut-off.
After the vavuum pump power cut-off, the closure member of magnetic valve can be opened the instantaneous branch road of opening fully under the effect of electromagnetic force, and extraneous air can enter the path of bleeding fast with instantaneous sealing low pressure storage space, has stopped the return-air phenomenon.On the other hand, because branch road keeps closing at ordinary times, even damage in order to the valve that seals the low pressure storage space, normally closed branch road also can be to a certain extent to whole low-pressure system pressurize.
Other are combined separately or with other features and the feature that is considered to characteristic of the present invention will be set forth in following additional claim.
Preferred embodiment according to the present invention, the described scheduled time was less than 30 seconds.Particularly preferably, the described scheduled time is 3 to 5 seconds.
Preferred embodiment according to the present invention, the described scheduled time is set by a timer.
Another aspect of the present invention comprises about a kind of method of work of refrigerator: start vavuum pump, can keep the storage space of low-pressure state to detach via the path of bleeding that is connected between described vavuum pump and the described storage space from one at least part of air; Judge whether to stop the work of vavuum pump, if so, stop the work of vavuum pump; It is characterized in that, give one to switch on to open described branch road with the magnetic valve of the branch road of the described Path Connection of bleeding and come to the described delivery pathways extraneous air of bleeding in order to open or to close, and after the scheduled time, described magnetic valve is de-energized, and described branch road is opened before keeping closing to next time vavuum pump power cut-off again.
Structure of the present invention and its other goals of the invention and beneficial effect will be in conjunction with the drawings and description of preferred embodiments and more becoming apparent.
[description of drawings]
The part of book and in order to a further understanding of the present invention to be provided as an illustration, the following drawings diagram the specific embodiment of the present invention, and be used for illustrating principle of the present invention with specification.Wherein,
Fig. 1 is the schematic diagram that has in accordance with a preferred embodiment of the present invention the refrigerator of extract system.
Fig. 2 a, Fig. 2 b are respectively in accordance with a preferred embodiment of the present invention closed electromagnetic valve and the schematic diagram when opening.
[specific embodiment]
Please refer to Fig. 1, refrigerator 1 has heat insulation interior space 10.Interior space 2 can not limited by the casing with heat-barrier material (indicating), closes or opens by the door (not indicating) that is connected in casing.
Refrigerator 1 has the storage space 2 that can keep low-pressure state.Storage space 2 can be formed by the storage unit 11 that is installed in the interior space 10, also can directly be limited by interior space 10.
Refrigerator 1 has in order to at least part of extract system that detaches 12 of air in the storage space 2.Extract system 12 comprise vavuum pump 3 and be connected to storage space 2 and vavuum pump 3 between the path 4 of bleeding.The path 4 of bleeding can be limited by at least one pipeline and at least one pipe joint.
Extract system 12 comprises and is arranged in the path 4 of bleeding, enters the mechanical valve 8 of storage space 2 in order to stop extraneous gas.Mechanical valve 8 can be arranged on the storage unit 11.Mechanical valve 8 can have a deformable valve block, and under the poor effect of external and internal pressure, valve block produces distortion and an airtight bleed-off passage that is arranged on the storage unit 11.Mechanical valve 8 can adopt existing scheme, and therefore the patent application CN200910028963.1 number disclosed scheme of for example submitting to before the applicant, do not do more descriptions here.
Extract system 12 comprises judging whether storage space 2 has reached the detecting unit 9 of setting pressure.Detecting unit 9 can comprise one in order to detect the pressure sensor of air pressure.
In this embodiment, detecting unit 9 is connected with the path 4 of bleeding, and judges pressure in the storage space 2 by the bleed pressure in path 4 of detection.In another embodiment, the pressure that detecting unit 9 also can direct-detection storage space 2.
Extract system 12 also comprises the branch road 5 that connects with the path 4 of being connected.One end of branch road 5 connects fluid and connects the path 4 of bleeding, and the other end then is connected with extraneous air, namely is connected with atmospheric pressure.The effect of branch road 5 is, after vavuum pump 3 power cut-offs, branch road 5 namely is opened, thereby atmosphere flows to the path 4 of bleeding by branch road 5, the path 4 interior pressure of bleeding are equivalent to atmospheric pressure, therefore set up pressure reduction in the both sides of mechanical valve 8, mechanical valve 8 can be closed, and prevents that with this gas from entering in the storage space 2 from bleed-off passage.
Branch road 5 is provided with to control the magnetic valve 7 that branch road 5 is opened or closed.6 work link to each other magnetic valve 7 with controller, determine whether to open branch road or close branch road according to the signal of controller 6.
Shown in Fig. 2 a, 2b, magnetic valve 7 comprises solenoid 70, spool 71 and spring 72.Magnetic valve 7 is normally close valve, and spool 71 is closing passage 73 under the resilient force of spring 72.In when energising, solenoid 70 is energized, and spool 71 is based on the effect of electromagnetic force and can instantaneous displacement and open branch road 5.After outage, electromagnetic force disappears, and spool 71 is shifted under the mechanical elastic effect of spring 72 and returns to the closed position.
Refrigerator 1 comprises controller 6, and controller 6 links to each other with vavuum pump 3, magnetic valve 7 and detecting unit 9 work.
Below, the method for work of the extract system 12 of detailed description refrigerator 1.
At first, start vavuum pump 3.Vavuum pump 3 can start based on user's input instruction, and for example when user's operation was positioned at the switch of refrigerator 1 correct position, vavuum pump 3 was started working.In another embodiment, also can start vavuum pump 3 based on the information of detecting unit 9 detected information or a timer by controller 6.This moment, magnetic valve 7 not energisings remained on closed condition.
Controller 6 judges whether stop the work of vavuum pump 3, if so, then stops the work of vavuum pump.Can make above judgement based on the information of detecting unit 9, for example judge by detecting unit 9 whether storage space 2 has reached the vacuum of setting, if detecting unit 9 detects vacuums in the path 4 of bleeding when being pressure decreased to predetermined value, then stop vavuum pump 3.In an alternative embodiment also can be by arranging a timer, and behind setting-up time of vavuum pump work, the work that namely stops vavuum pump also is possible.
And then (almost being simultaneously), magnetic valve 7 is energized.Under the effect of electromagnetic force, the magnetic valve 7 instantaneous branch roads 5 of opening fully, extraneous air enters the path 4 of bleeding fast, and the pressure in the path 4 of bleeding can instantaneously be increased to atmospheric pressure.In the present embodiment, magnetic valve 7 just can be opened below 0.5 second after being energized fully.
Because set up soon larger pressure differential in the path 4 of bleeding and between the storage space 2, mechanical valve 8 can instantaneously be closed.Return-air phenomenon (after vavuum pump 3 power cut-offs, the bleed-off passage that extraneous air is never in time closed by mechanical valve enters in the storage space 2) can be stopped effectively, thereby can guarantee the vacuum in the storage space 2.
After a scheduled time, magnetic valve 7 is de-energized, and spool 71 resets under the elastic force of spring 72 (this process needs 1～2 second at least), and branch road 5 is closed.Branch road 5 keeps closing, until open when next time evacuation intermediate pump 3 quits work again.
Preferably, the above-mentioned scheduled time that is to say less than 30 seconds, and magnetic valve 7 only is energized 30 seconds with the closure plane tool valve 8 that gets off, and namely is de-energized afterwards.In this embodiment, be 3 to 5 seconds (for example 4 seconds) conduction time of magnetic valve 7.Can control the conduction time of magnetic valve 7 by the timer that 6 work with controller link to each other.

Claims (7)

1. refrigerator comprises:
The storage space (2) that can keep low-pressure state;
Vavuum pump (3),
The path (4) of bleeding is connected between described storage space (2) and the described vavuum pump (3); The branch road (5) that is connected with the described path of bleeding (4), when described vavuum pump (3) is worked, described branch road (5) is closed, when described vavuum pump (3) power cut-off, described branch road (5) is opened to carry extraneous air to the described path of bleeding (4); And
In order to the magnetic valve (7) of opening or closing described branch road (5);
It is characterized in that, after described vavuum pump (3) power cut-off, described magnetic valve (7) is energized and opens described branch road (5), after the scheduled time, described magnetic valve (7) is de-energized and makes described branch road (5) cut out and be retained to next time vavuum pump (3) power cut-off.
2. refrigerator as claimed in claim 1 (1) is characterized in that, the described scheduled time was less than 30 seconds.
3. refrigerator as claimed in claim 1 (1) is characterized in that, the described scheduled time is 3 to 5 seconds.
4. such as the described refrigerator of claim 1,2 or 3 (1), it is characterized in that the described scheduled time is set by a timer.
5. the method for work of a refrigerator comprises:
Start vavuum pump (3), can keep the storage space (2) of low-pressure state to detach via the path of bleeding (4) that is connected between described vavuum pump (3) and the described storage space (2) from one at least part of air;
Judge whether to stop the work of vavuum pump (3), if so, stop the work of vavuum pump (3);
It is characterized in that, give one to switch on next to the described path of bleeding (4) conveying extraneous air to open described branch road (5) in order to the magnetic valve (7) of opening or closing the branch road (5) that is connected with the described path of bleeding (4), and after the scheduled time, described magnetic valve (7) is de-energized, and described branch road (5) is opened before keeping closing to next time vavuum pump (3) power cut-off again.
6. method as claimed in claim 5 is characterized in that, the described scheduled time is 3 to 5 seconds.
7. such as claim 5 or 6 described methods, it is characterized in that the described scheduled time is set by a timer.
CN201110252375.3A 2011-08-24 2011-08-24 Refrigerator Active CN102954642B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201110252375.3A CN102954642B (en) 2011-08-24 2011-08-24 Refrigerator
EP12181277.0A EP2562495B1 (en) 2011-08-24 2012-08-22 Refrigerator
PL12181277T PL2562495T3 (en) 2011-08-24 2012-08-22 Refrigerator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201110252375.3A CN102954642B (en) 2011-08-24 2011-08-24 Refrigerator

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CN102954642A true CN102954642A (en) 2013-03-06
CN102954642B CN102954642B (en) 2016-06-15

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CN (1) CN102954642B (en)
PL (1) PL2562495T3 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107367126A (en) * 2017-07-06 2017-11-21 青岛海尔股份有限公司 The control method and computer-readable storage medium of refrigerator
CN108209653A (en) * 2016-12-14 2018-06-29 佛山市顺德区美的电热电器制造有限公司 Preservation device, fresh-keeping control method, fresh-keeping control system and cooking apparatus
CN111473577A (en) * 2020-04-17 2020-07-31 海信（山东）冰箱有限公司 Refrigerator with a door

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3006871B1 (en) * 2014-10-07 2018-08-08 Whirlpool Corporation Refrigerator with a compartment storing removable food containers having a controlled environment
CN109527849B (en) * 2019-01-22 2023-09-22 中山佳威路家用电器有限公司 Drawer type vacuum locker controlled by magnetic induction
BE1029139B1 (en) * 2021-02-24 2022-09-19 Miele & Cie Storage device for use in a pantry and pantry

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03286984A (en) * 1990-03-30 1991-12-17 Sharp Corp Refrigerator
DE19931920A1 (en) * 1999-07-08 2001-01-18 Alois Scheidter Container with inner chamber for refrigerator is sealed with door or flap to be airtight for preventing leakage from refrigerator inner chamber
KR20020043852A (en) * 2000-12-04 2002-06-12 구자홍 Vacuum refrigerator
KR20020047536A (en) * 2000-12-13 2002-06-22 구자홍 Controlling device and method of Vacuum refrigerator
CN101331970A (en) * 2007-06-28 2008-12-31 博西华电器（江苏）有限公司 Vacuum preserving system and control method thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04131674A (en) * 1990-09-21 1992-05-06 Hitachi Ltd Vacuum freezing refrigerator
US6090422A (en) * 1999-08-11 2000-07-18 Taragan; Arie Refrigerator with automatic vacuum compartment and method of preserving fresh food items using the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03286984A (en) * 1990-03-30 1991-12-17 Sharp Corp Refrigerator
DE19931920A1 (en) * 1999-07-08 2001-01-18 Alois Scheidter Container with inner chamber for refrigerator is sealed with door or flap to be airtight for preventing leakage from refrigerator inner chamber
KR20020043852A (en) * 2000-12-04 2002-06-12 구자홍 Vacuum refrigerator
KR20020047536A (en) * 2000-12-13 2002-06-22 구자홍 Controlling device and method of Vacuum refrigerator
CN101331970A (en) * 2007-06-28 2008-12-31 博西华电器（江苏）有限公司 Vacuum preserving system and control method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108209653A (en) * 2016-12-14 2018-06-29 佛山市顺德区美的电热电器制造有限公司 Preservation device, fresh-keeping control method, fresh-keeping control system and cooking apparatus
CN107367126A (en) * 2017-07-06 2017-11-21 青岛海尔股份有限公司 The control method and computer-readable storage medium of refrigerator
CN107367126B (en) * 2017-07-06 2020-03-31 青岛海尔股份有限公司 Control method of refrigerator and computer storage medium
CN111473577A (en) * 2020-04-17 2020-07-31 海信（山东）冰箱有限公司 Refrigerator with a door

Also Published As

Publication number Publication date
EP2562495A3 (en) 2013-03-13
EP2562495A2 (en) 2013-02-27
PL2562495T3 (en) 2016-07-29
EP2562495B1 (en) 2016-02-03
CN102954642B (en) 2016-06-15

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