EP3430329A1 - Refrigerator and/or freezer device - Google Patents
Refrigerator and/or freezer deviceInfo
- Publication number
- EP3430329A1 EP3430329A1 EP17710827.1A EP17710827A EP3430329A1 EP 3430329 A1 EP3430329 A1 EP 3430329A1 EP 17710827 A EP17710827 A EP 17710827A EP 3430329 A1 EP3430329 A1 EP 3430329A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- evaporator
- bypass
- condenser
- refrigerator
- heat
- 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.)
- Withdrawn
Links
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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
- F25B47/022—Defrosting cycles hot gas defrosting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/10—Fluid-circulation arrangements using electro-osmosis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/025—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes having non-capillary condensate return means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/04—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure
- F28D15/043—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure forming loops, e.g. capillary pumped loops
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/04—Refrigeration circuit bypassing means
- F25B2400/0411—Refrigeration circuit bypassing means for the expansion valve or capillary tube
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/05—Compression system with heat exchange between particular parts of the system
- F25B2400/054—Compression system with heat exchange between particular parts of the system between the suction tube of the compressor and another part of the cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
- F28F2250/06—Derivation channels, e.g. bypass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
- F28F2250/08—Fluid driving means, e.g. pumps, fans
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Definitions
- the present invention relates to a refrigerator and / or freezer with at least one body and at least one arranged in the body cooled interior, wherein the device has at least one refrigerant circuit, which serves to cool the interior, wherein the refrigerant circuit at least one evaporator, at least one compressor , at least one condenser and at least one throttle or capillary.
- Such refrigerators and / or freezers are known in various embodiments from the prior art.
- the present invention has the object of developing a refrigerator and / or freezer of the type mentioned in such a way that this has a particularly simple and efficient defrost heating.
- the refrigerator and / or freezer has a no-frost functionality, which is formed by a bypass which runs as a bypass to the throttle or to the capillary, the bypass of the condenser directly or indirectly to runs the evaporator and is designed with at least one valve to shut off the bypass. This valve is closed when defrost is not desired and open when the evaporator is to be defrosted.
- the evaporator and the bypass are arranged and designed such that there is a heat pipe effect in the bypass and / or this upstream and / or downstream components of the device.
- heat pipe By a heat pipe effect is meant that the refrigerant evaporates at the warm end of the heat pipe and condenses at the other end or in another area of the heat pipe and thereby gives off heat.
- a heat pipe or a heat pipe represents a particularly efficient possibility of heat transport and serves in the present case to defrost the evaporator as needed or at certain times.
- the "heat pipe” is in the present case by at least one bypass line, in the context of the invention also referred to simply as "bypass" and / or these upstream and / or downstream components, such as line sections of the refrigerant circuit formed, the bypass line in the bypass to the throttle or Capillary runs connecting the condenser to the steamer.
- the heat pipe effect causes a particularly efficient heat transfer from the condenser to the evaporator.
- the bypass can extend directly from the condenser to the evaporator or indirectly from the condenser to the evaporator, which means that the bypass is not located directly on the condenser or on the evaporator, but one or more elements of the refrigerant circuit and the device are interposed such as a refrigerant collector.
- bypass extends between the condenser and a collector downstream of the evaporator for the refrigerant.
- the refrigerant passes from the evaporator to the collector, where liquid, non-evaporated refrigerant is collected, before passing the vaporized refrigerant into the compressor.
- the collector is located inside or preferably outside of the cooled interior.
- the collector is mounted on the hot side, that is not in the cooled interior.
- the bypass passes between the condenser and the said collector and from there the refrigerant passes through the suction line in the evaporator.
- bypass extends between the condenser and the suction pipe, which runs between the evaporator and the compressor.
- bypass extends between the condenser and the suction pipe, which runs between the evaporator and the compressor.
- the collector is in the cooled interior.
- the collector is located outside of the cooled interior.
- the condenser communicates with at least one heat storage and is preferably arranged in a liquid bath, in particular in a water bath.
- the liquefier is in thermally conductive connection with at least one heat store, for example with a liquid bath and in particular with a water bath.
- the condenser is located within a liquid bath.
- the water bath thus serves as a heat buffer and as a heat reserve for the defrosting of the evaporator or a heat exchanger on the evaporator.
- the evaporator is designed such that the reflux of the condensed refrigerant into the condenser takes place by gravity.
- the evaporator is thermally in communication with at least one cold storage, wherein the bypass is arranged so that the cold storage by means of the bypass heat can be supplied.
- This cold storage may be, for example, a latent heat storage.
- conveying means which are arranged in such a way that they convey air to and through the liquefier.
- Figure 1 a schematic longitudinal sectional view through a cooling and / or
- Figure 2 a schematic longitudinal sectional view through a cooling and / or
- Freezer according to the invention in a second embodiment.
- FIG. 1 shows by reference numeral 10 the body of a refrigerator or freezer according to the invention.
- the body can be designed with a full vacuum insulation system.
- a full vacuum insulation 20 between the inside or the inner container and the outer skin, or the outer jacket of the device.
- This full vacuum insulation may consist of a foil bag in which a core material is located, e.g. Perlite. This foil bag is vacuum-tight welded at its open sides. There is a vacuum inside the foil bag so that the greatest possible heat transfer resistance is provided in the body.
- a corresponding full vacuum insulation in the closure element, that is in the door, flap or drawer of the device may be present.
- continuous vacuum insulation chamber consists.
- no further thermal insulation materials are present except for the full vacuum insulation.
- the envelope of the film bag is a diffusion-tight enclosure, by means of which the gas input in the film bag is so greatly reduced that the gas entry-related increase in the thermal conductivity of the resulting Vakuumdämm stressess is sufficiently low over its lifetime.
- the life span is, for example, a period of 15 years, preferably 20 years and more preferably 30 years.
- the increase in the thermal conductivity of the vacuum insulation body due to the introduction of gas is ⁇ 100% and particularly preferably ⁇ 50% over its service life.
- the area-specific gas transmission rate of the cladding is ⁇ 10 "5 mbar * l / s * m 2 and more preferably ⁇ 10 " 6 mbar * l / s * m 2 (measured according to ASTM D-3985).
- This gas passage rate applies to nitrogen and oxygen.
- low gas transmission rates preferably in the range of ⁇ 10 -2 mbar * l / s * m 2 and particularly preferably in the range of ⁇ 10 "3 mbar * l / s * m 2 (measured according to ASTM F
- these low gas flow rates achieve the aforementioned small increases in thermal conductivity.
- the present invention is not limited to such Vollvakuumkssel- or freezers but also includes refrigerators or freezers with a conventional insulation, for example in the form of PU foam.
- the reference numeral 30 indicates the evaporator of the device. This is located within the cooled interior and is on the outlet side with the collector 40 in connection. From the collector, the suction line 50 extends to the compressor 60th
- the condenser 70 Connected to the compressor 60 is the condenser 70, from which the refrigerant flows into the evaporator 30 via the capillary 80 during operation of the refrigerant circuit, that is to say of the compressor 60.
- the condenser 70 a condensation of the refrigerant takes place, whereby heat is released.
- the evaporator evaporation of the refrigerant takes place, whereby the cooled interior heat is removed.
- the collector 40 has the task to catch unevaporated refrigerant from the evaporator 30, so that the compressor 60 is acted upon only with gaseous refrigerant.
- the reference numeral 110 designates a dryer around which the capillary 80 is wound, which connects the condenser outlet to the evaporator inlet.
- Reference numeral 90 denotes a bypass extending from an outlet side area of the condenser 70 to the header 40. In this line 90, the check valve 100 is located.
- the valve 100 is opened, with the result that refrigerant from the condenser 70 flows through the line 90 into the collector 40 and from there into the evaporator 30.
- the evaporator and the bypass 90 and the collector 40 is configured and arranged so that in a heat pipe effect, that is, that liquid refrigerant evaporates and condenses in the evaporator.
- a particularly high amount of heat in the area of the evaporator can be dispensed, so that a particularly efficient defrosting of the evaporator takes place.
- the compressor 60 is preferably off.
- the heat pipe effect can take place in the bypass 90 and / or in the collector 40 and / or in the evaporator 30 itself.
- FIG 2 shows another embodiment of the refrigerator or freezer according to the invention, wherein like reference numerals indicate the same or functionally identical elements as in Figure 1.
- the collector 40 according to FIG. 2 is located in the warm region, ie outside the cooled interior. As can be seen from FIG. 2, the collector 40 according to FIG. 2 is located below the floor and outside the cooled interior.
- FIG. 2 Another difference from FIG. 1 is that, according to FIG. 2, a shut-off valve 110 is also arranged on the capillary 80.
- a heat storage can be arranged, which serves as a heat reserve for the defrosting of the heat exchanger at the evaporator.
- the heat exchanger on the evaporator can be designed for example as latent heat storage.
- At least one fan may be provided which generates an air flow via the condenser 70.
- This fan can be turned off to warm the condenser or to prevent the dissipation of heat by convection, which is advantageous in the case of defrosting the evaporator 30. It is also possible, depending on the temperature of the condenser to run the fan, especially if the condenser no heat storage, such as a water bath is arranged to use room heat through the condenser to defrost the evaporator 30.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016003245 | 2016-03-16 | ||
PCT/EP2017/000321 WO2017157512A1 (en) | 2016-03-16 | 2017-03-10 | Refrigerator and/or freezer device |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3430329A1 true EP3430329A1 (en) | 2019-01-23 |
Family
ID=58314151
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17710827.1A Withdrawn EP3430329A1 (en) | 2016-03-16 | 2017-03-10 | Refrigerator and/or freezer device |
Country Status (6)
Country | Link |
---|---|
US (1) | US20190049164A1 (en) |
EP (1) | EP3430329A1 (en) |
CN (1) | CN108779947A (en) |
DE (1) | DE102017002365A1 (en) |
RU (1) | RU2708761C1 (en) |
WO (1) | WO2017157512A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110873384A (en) * | 2018-08-31 | 2020-03-10 | 广东美的白色家电技术创新中心有限公司 | Mobile air conditioner and heat exchanger system thereof |
CN110260582A (en) * | 2019-06-05 | 2019-09-20 | 合肥华凌股份有限公司 | Defrosting system and refrigeration equipment with the defrosting system |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3150502A (en) * | 1962-07-25 | 1964-09-29 | Singer Co | No-freeze refrigerant control |
US4333517A (en) * | 1979-07-10 | 1982-06-08 | James Parro | Heat exchange method using natural flow of heat exchange medium |
US4285210A (en) * | 1980-04-28 | 1981-08-25 | General Electric Company | Self-contained heating and cooling apparatus |
DE3429058A1 (en) * | 1984-08-07 | 1986-02-20 | Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart | Method and device for defrosting an evaporator of an air/water heat pump |
SU1320613A1 (en) * | 1985-07-08 | 1987-06-30 | Серпуховское высшее военное командно-инженерное училище ракетных войск им.Ленинского комсомола | Refrigerating machine |
BE903839A (en) * | 1985-12-12 | 1986-04-01 | Hooydonck Guy Van | REFRIGERATION MACHINE. |
JPH0674941B2 (en) * | 1987-12-17 | 1994-09-21 | 三菱電機株式会社 | Defrost control method for refrigeration cycle |
US5269151A (en) * | 1992-04-24 | 1993-12-14 | Heat Pipe Technology, Inc. | Passive defrost system using waste heat |
JPH07248166A (en) * | 1994-03-14 | 1995-09-26 | Nippondenso Co Ltd | Refrigerator |
DE19957719A1 (en) * | 1999-11-30 | 2001-05-31 | Bsh Bosch Siemens Hausgeraete | Refrigerator has coolant feed stage approximately completely filled with liquid coolant as regards coolant accommodation volume during compressor idle periods |
DE102004006270A1 (en) * | 2004-02-09 | 2005-09-01 | Linde Kältetechnik GmbH & Co. KG | (Low) refrigerated furniture with natural circulation |
CN2697540Y (en) * | 2004-03-25 | 2005-05-04 | 青岛昌隆商业机械有限公司 | Direct defrosting type freezer for commercial showing |
RU2313047C2 (en) * | 2005-04-26 | 2007-12-20 | Открытое акционерное общество Производственно-конструкторское объединение "Теплообменник" | Cooling plant |
CA2561123A1 (en) * | 2005-09-28 | 2007-03-28 | H-Tech, Inc. | Heat pump system having a defrost mechanism for low ambient air temperature operation |
US7836718B2 (en) * | 2007-06-29 | 2010-11-23 | Electrolux Home Products, Inc. | Hot gas defrost method and apparatus |
DE102008044289A1 (en) * | 2008-12-02 | 2010-06-10 | BSH Bosch und Siemens Hausgeräte GmbH | Refrigeration unit with several compartments |
GB2487975A (en) * | 2011-02-11 | 2012-08-15 | Frigesco Ltd | Flash defrost system |
KR20160011001A (en) * | 2014-07-21 | 2016-01-29 | 엘지전자 주식회사 | A refrigerator and a method controlling the same |
-
2017
- 2017-03-10 RU RU2018136199A patent/RU2708761C1/en not_active IP Right Cessation
- 2017-03-10 EP EP17710827.1A patent/EP3430329A1/en not_active Withdrawn
- 2017-03-10 WO PCT/EP2017/000321 patent/WO2017157512A1/en active Application Filing
- 2017-03-10 DE DE102017002365.4A patent/DE102017002365A1/en not_active Withdrawn
- 2017-03-10 CN CN201780016952.4A patent/CN108779947A/en active Pending
- 2017-03-10 US US16/078,646 patent/US20190049164A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
RU2708761C1 (en) | 2019-12-11 |
DE102017002365A1 (en) | 2017-09-21 |
WO2017157512A1 (en) | 2017-09-21 |
CN108779947A (en) | 2018-11-09 |
US20190049164A1 (en) | 2019-02-14 |
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