EP2562495B1 - Refrigerator - Google Patents

Refrigerator Download PDF

Info

Publication number: EP2562495B1
Authority: EP; European Patent Office
Prior art keywords: vacuum pump; bypass; air; evacuation path; air evacuation
Prior art date: 2011-08-24
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.): Active

Application number

EP12181277.0A

Other languages

German (de)

English (en)

French (fr)

Other versions

EP2562495A2 (en

EP2562495A3 (en

Inventor

Wentao Diao

Benhe Dou

Pingan Li

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

BSH Hausgeraete GmbH

Original Assignee

BSH Hausgeraete GmbH

Priority date (The priority date 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 date listed.)

2011-08-24

Filing date

2012-08-22

Publication date

2016-02-03

2012-08-22 Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH

2012-08-22 Priority to PL12181277T priority Critical patent/PL2562495T3/pl

2013-02-27 Publication of EP2562495A2 publication Critical patent/EP2562495A2/en

2013-03-13 Publication of EP2562495A3 publication Critical patent/EP2562495A3/en

2016-02-03 Application granted granted Critical

2016-02-03 Publication of EP2562495B1 publication Critical patent/EP2562495B1/en

Status Active legal-status Critical Current

2032-08-22 Anticipated expiration legal-status Critical

Images

Classifications

- 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

Definitions

the present invention relates to a refrigerator and a working method thereof, and more particularly to a refrigerator with a storage space capable of maintaining a low-pressure state and a working method thereof.
a refrigerator capable of preserving food in a low-pressure environment is known in the prior art.
a refrigerator generally has an evacuatable storage chamber (commonly known as a "vacuum chamber” in the industry).
a vacuum chamber By extracting at least one part of air out of the storage chamber, the air content in the storage chamber is lowered, so as to weaken the oxidization process of food, thus extending the preservation time and quality of food.
the Chinese Invention Patent CN 101331970 B discloses a vacuum preservation system and a control method thereof.
the vacuum preservation system includes a low-pressure chamber/vacuum chamber, a vacuum pump, and an air evacuation path connected between the vacuum pump and the low-pressure chamber.
air in the low-pressure chamber may be extracted out through the air evacuation path.
the air evacuation path has a bypass connected to external air (external atmospheric pressure), and an electromagnetic valve for controlling the opening and closing of the bypass is disposed in the bypass.
a control circuit board issues an instruction to switch the electromagnetic valve to a closed position, then, the vacuum pump is started, and after the low-pressure chamber reaches a preset vacuum degree, the vacuum pump stops work.
the control circuit board issues an instruction to switch the electromagnetic valve from the closed position to an open position, so as to import external air into the air evacuation path at a certain flow rate, thereby closing a mechanical valve disposed on the low-pressure chamber with such a pressure difference.
a closure component of the valve moves under the action of a mechanical force, which is a very slow process, possibly causing insufficient external air to flow into the air evacuation path and failure of the mechanical valve to close instantly, thus leading to an air-return phenomenon, that is, external air enters the low-pressure chamber.
pressure maintenance relies entirely on the mechanical valve of the low-pressure chamber. If the mechanical valve fails, external air will soon enter the low-pressure chamber.
An objective of the present invention is to resolve at least one of the foregoing technical problems, so as to provide a refrigerator with a more reliable low-pressure storage system.
the present invention provides a refrigerator, which includes: a storage space, capable of maintaining a low-pressure state; a vacuum pump; an air evacuation path, connected between the storage space and the vacuum pump; a bypass, connected to the air evacuation path, where when the vacuum pump is in work, the bypass is closed, while when the vacuum pump finishes work, the bypass is opened to transport external air to the air evacuation path; and an electromagnetic valve, for opening or closing the bypass, characterized in that, after the vacuum pump finishes work, the electromagnetic valve is powered on and opens the bypass; and after a preset time, the electromagnetic valve is powered off, so that the bypass is closed and remains closed until next time the vacuum pump finishes work.
a closure component of the electromagnetic valve can be opened under the action of an electromagnetic force to instantly and completely open the bypass, so that external air can quickly enter the air evacuation path to instantly close the low-pressure storage space, avoiding the air-return phenomenon.
the bypass normally remains closed; therefore, even if a valve for closing the low-pressure storage space is damaged, the normally closed bypass is capable of maintaining pressure for the entire low-pressure system to a certain extent.
the preset time is smaller than 30 seconds. More preferably, the preset time is 3 to 5 seconds.
the preset time is set by a timer.
the present invention provides a working method of a refrigerator, which includes: starting a vacuum pump, so as to extract at least one part of air out of a storage space capable of maintaining a low-pressure state via an air evacuation path connected between the vacuum pump and the storage space; and determining whether to stop the work of the vacuum pump; and if yes, stopping the work of the vacuum pump, characterized in that, an electromagnetic valve for opening or closing a bypass connected to the air evacuation path is powered on to open the bypass, so as to transport external air to the air evacuation path; and after a preset time, the electromagnetic valve is powered off, and the bypass remains closed until next time the vacuum pump finishes work.
a refrigerator 1 has a heat insulated inner space 10.
the inner space 10 may be defined by a cabinet (not shown in FIG. 1 ) with a heat insulation material, and may be closed or opened through a door (not shown in FIG. 1 ) connected to the cabinet.
the refrigerator 1 has a storage space 2 capable of maintaining a low-pressure state.
the storage space 2 may be formed by a storage unit 11 installed in the inner space 10, or may be directly defined by the inner space 10.
the refrigerator 1 has an air evacuation system 12 used for extracting at least one part of air in the storage space 2 out.
the air evacuation system 12 includes a vacuum pump 3 and an air evacuation path 4 connected between the storage space 2 and the vacuum pump 3.
the air evacuation path 4 may be defined by at least one pipe and at least one pipe joint.
the air evacuation system 12 includes a mechanical valve 8 located in the air evacuation path 4 and used for preventing external air from entering the storage space 2.
the mechanical valve 8 may be disposed on the storage unit 11.
the mechanical valve 8 may have a deformable valve plate; under the action of an internal and external pressure difference, the valve plate deforms and closes an air evacuation channel disposed on the storage unit 11.
the mechanical valve 8 may adopt an existing solution, for example, the solution disclosed in the Patent Application No. CN200910028963.1 submitted by the applicant earlier, which is not described any more herein.
the air evacuation system 12 includes a detection unit 9 for determining whether the storage space 2 has reached a set pressure.
the detection unit 9 may include a pressure sensor for detecting air pressure.
the detection unit 9 is connected to the air evacuation path 4, and determines pressure inside the storage space 2 by detecting pressure of the air evacuation path 4. In another embodiment, the detection unit 9 may also directly detect pressure in the storage space 2.
the air evacuation system 12 further includes a bypass 5 connected to the air evacuation path 4.
One end of the bypass 5 is connected to the air evacuation path 4, and the other end is connected to external air, that is, atmospheric pressure.
the function of the bypass 5 is that, after the vacuum pump3 finishes work, the bypass 5 is opened, and thus the atmosphere flows to the air evacuation path 4 through the bypass 5, the pressure inside the air evacuation path 4 is equal to atmospheric pressure, so a pressure difference is created between two sides of the mechanical valve 8, and the mechanical valve 8 can be closed, so as to prevent air from entering the storage space 2 from the air evacuation channel.
the bypass 5 is provided with an electromagnetic valve 7 used for controlling opening or closing of the bypass 5.
the electromagnetic valve 7 is in work connection with a controller 6, and decides whether to open or close the bypass according to a signal of the controller 6.
the electromagnetic valve 7 includes an electromagnetic coil 70, a valve core 71, and a spring 72.
the electromagnetic valve 7 is a normally closed valve, and the valve core 71 closes a channel 73 under the action of an elastic force of the spring 72.
the electromagnetic coil 70 is powered on, and the valve core 71 is capable of instantly displacing and opening the bypass 5 under the action of an electromagnetic force.
the electromagnetic force disappears, and the valve core 71 displaces and returns to a closed position under the action of a mechanical elastic force.
the refrigerator 1 includes the controller 6, where the controller 6 is in work connection with the vacuum pump 3, the electromagnetic valve 7, and the detection unit 9.
a working method of the air evacuation system 12 of the refrigerator 1 is described in the following in detail.
the vacuum pump 3 is started.
the vacuum pump 3 may be started based on an input instruction of a user. For example, when the user operates a switch located at a proper position of the refrigerator 1, the vacuum pump 3 starts work.
the vacuum pump 3 may also be started through the controller 6 based on information detected by the detection unit 9 or information of a timer. In this case, the electromagnetic valve 7 is not powered on, and remains in a closed state.
the controller 6 determines whether to stop the work of the vacuum pump 3, and if yes, stops the work of the vacuum pump. The determination may be made based on information of the detection unit 9. For example, it is determined, through the detection unit 9, whether the storage space 2 has reached a set vacuum degree, and if the detection unit 9 detects that the vacuum degree, that is, the pressure, inside the air evacuation path 4 reduces to a preset value, the vacuum pump 3 is stopped. In an alternative embodiment, it is also possible to stop the work of the vacuum pump after the vacuum pump works for a set time by setting a timer.
the electromagnetic valve 7 is powered on. Under the action of the electromagnetic force, the electromagnetic valve 7 instantly and completely opens the bypass 5, external air quickly enters the air evacuation path 4, and pressure inside the air evacuation path 4 can instantly rise to the atmospheric pressure. In this embodiment, the electromagnetic valve 7 can be completely opened within less than 0.5 second after being powered on.
the mechanical valve 8 can be instantly closed.
the air-return phenomenon (after the vacuum pump 3 finishes work, external air enters the storage space 2 from the air evacuation channel that fails to be instantly closed by the mechanical valve) can be effectively avoided, and thus the vacuum degree in the storage space 2 can be ensured.
the electromagnetic valve 7 is powered off, the valve core 71 is reset under the action of the elastic force of the spring 72 (the process takes at least 1 to 2 seconds), and the bypass 5 is closed.
the bypass 5 remains closed until next time the vacuum pump 3 stops work in a next evacuation procedure.
the preset time is smaller than 30 seconds. That is to say, the electromagnetic valve 7 is powered on for less than 30 seconds to close the mechanical valve 8, and then is powered off.
the power-on time of the electromagnetic valve 7 is 3 to 5 seconds (for example, 4 seconds).
the power-on time of the electromagnetic valve 7 may be controlled through a timer in work connection with the controller 6.

Landscapes

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)

EP12181277.0A 2011-08-24 2012-08-22 Refrigerator Active EP2562495B1 (en)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
PL12181277T PL2562495T3 (pl)	2011-08-24	2012-08-22	Chłodziarka

Applications Claiming Priority (1)

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

Publications (3)

Publication Number	Publication Date
EP2562495A2 EP2562495A2 (en)	2013-02-27
EP2562495A3 EP2562495A3 (en)	2013-03-13
EP2562495B1 true EP2562495B1 (en)	2016-02-03

Family

ID=46785250

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP12181277.0A Active EP2562495B1 (en)	2011-08-24	2012-08-22	Refrigerator

Country Status (3)

Country	Link
EP (1)	EP2562495B1 (zh)
CN (1)	CN102954642B (zh)
PL (1)	PL2562495T3 (zh)

Families Citing this family (6)

* 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
CN108209653A (zh) *	2016-12-14	2018-06-29	佛山市顺德区美的电热电器制造有限公司	保鲜装置、保鲜控制方法、保鲜控制系统及烹饪器具
CN107367126B (zh) *	2017-07-06	2020-03-31	青岛海尔股份有限公司	冰箱的控制方法与计算机存储介质
CN109527849B (zh) *	2019-01-22	2023-09-22	中山佳威路家用电器有限公司	一种磁感控制的抽屉式真空储物柜
CN111473577A (zh) *	2020-04-17	2020-07-31	海信（山东）冰箱有限公司	冰箱
BE1029139B1 (de) *	2021-02-24	2022-09-19	Miele & Cie	Ablagevorrichtung zum Einsatz in einen Vorratsschrank und Vorratsschrank

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH03286984A (ja) *	1990-03-30	1991-12-17	Sharp Corp	冷蔵庫
JPH04131674A (ja) *	1990-09-21	1992-05-06	Hitachi Ltd	真空冷凍冷蔵庫
DE19931920A1 (de) *	1999-07-08	2001-01-18	Alois Scheidter	Kühlschrank
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
KR100390426B1 (ko) *	2000-12-04	2003-07-07	엘지전자 주식회사	진공 냉장고
KR100379487B1 (ko) *	2000-12-13	2003-04-10	엘지전자 주식회사	진공 냉장고의 제어장치 및 제어방법
CN101331970B (zh) *	2007-06-28	2011-04-27	博西华家用电器有限公司	真空保鲜系统及其控制方法

2011
- 2011-08-24 CN CN201110252375.3A patent/CN102954642B/zh active Active
2012
- 2012-08-22 EP EP12181277.0A patent/EP2562495B1/en active Active
- 2012-08-22 PL PL12181277T patent/PL2562495T3/pl unknown

Also Published As

Publication number	Publication date
CN102954642A (zh)	2013-03-06
PL2562495T3 (pl)	2016-07-29
CN102954642B (zh)	2016-06-15
EP2562495A2 (en)	2013-02-27
EP2562495A3 (en)	2013-03-13

Publication	Publication Date	Title
EP2562495B1 (en)	2016-02-03	Refrigerator
US10392855B2 (en)	2019-08-27	Domestic appliance comprising a differential pressure sensor
CN100582612C (zh)	2010-01-20	具有真空保鲜系统的电冰箱及其控制方法
CN101331970B (zh)	2011-04-27	真空保鲜系统及其控制方法
WO2009069256A1 (ja)	2009-06-04	冷凍装置
WO2012127292A8 (en)	2013-04-04	Open/close actuating mechanism control device and open/close actuating mechanism control method for vehicle
CN103851850B (zh)	2017-08-11	冰箱及其工作方法
US11137170B2 (en)	2021-10-05	Heat pump system and start up control method thereof
WO2009128647A3 (en)	2010-01-14	Ice-full state detecting apparatus and refrigerator having the same
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CN107965937B (zh)	2019-07-16	一种制冷机组及其抽空停机控制方法
CN104062135A (zh)	2014-09-24	冰箱的故障检测方法及系统
SE431366B (sv)	1984-01-30	Forfarande for vakuumkylning av fuktighet innehallande livsmedelsartiklar och apparat for utforande av forfarandet
CN110507172A (zh)	2019-11-29	烹饪器具及其控制方法、控制装置和计算机可读存储介质
WO2016164880A1 (en)	2016-10-13	System and method for controlling moisture within an air compressor assembly
TW200619578A (en)	2006-06-16	Refrigerating device
US20180031248A1 (en)	2018-02-01	Method for controlling gas leak
CN103727629A (zh)	2014-04-16	适应低温环境的风冷冷凝机组启动方法及装置
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CN110859489B (zh)	2022-02-25	真空烹饪器具及控制其泄压的方法和装置以及存储介质
CN208693016U (zh)	2019-04-05	烹饪设备
CN202497490U (zh)	2012-10-24	灭菌器门安全锁止装置
KR20150035559A (ko)	2015-04-06	준비작동식 스프링클러 시스템 동작 부스터
CN203036931U (zh)	2013-07-03	冰箱
CN214484215U (zh)	2021-10-26	一种便于使用的智能蒸箱

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