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WO2013064428A2 - Circuit frigorifique et appareil frigorifique électroménager comportant un circuit frigorifique - Google Patents

Circuit frigorifique et appareil frigorifique électroménager comportant un circuit frigorifique Download PDF

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Publication number
WO2013064428A2
WO2013064428A2 PCT/EP2012/071265 EP2012071265W WO2013064428A2 WO 2013064428 A2 WO2013064428 A2 WO 2013064428A2 EP 2012071265 W EP2012071265 W EP 2012071265W WO 2013064428 A2 WO2013064428 A2 WO 2013064428A2
Authority
WO
WIPO (PCT)
Prior art keywords
refrigerant
housing
refrigerant circuit
drying device
circuit according
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.)
Ceased
Application number
PCT/EP2012/071265
Other languages
German (de)
English (en)
Other versions
WO2013064428A3 (fr
Inventor
Andreas BABUCKE
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 Bosch und Siemens 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.)
Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of WO2013064428A2 publication Critical patent/WO2013064428A2/fr
Publication of WO2013064428A3 publication Critical patent/WO2013064428A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • 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
    • F25B2400/16—Receivers
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/01—Geometry problems, e.g. for reducing size
    • 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
    • F25B2600/00—Control issues
    • F25B2600/05—Refrigerant levels

Definitions

  • the invention relates to a refrigerant circuit and a household refrigerator with a refrigerant circuit.
  • the refrigerant cycle includes a compressor, a condenser, a throttle device, and an evaporator provided for cooling the internal space.
  • DE 1 816 447 A1 discloses a method and a device for influencing cold room temperatures of a household refrigerating appliance whose coolable interior can be cooled by means of a refrigerant circuit.
  • the refrigerant circuit comprises a compressor, a compressor or condenser downstream of the compressor, a condenser downstream of the condenser, and at least one evaporator, which are arranged between the compressor and the capillary.
  • a pivotable storage vessel is arranged, which provides a modified storage volume for the refrigerant of the refrigerant circuit, depending on the pivot state.
  • Object of the present invention is to provide an improved refrigerant circuit in particular a household refrigerator.
  • a refrigerant circuit comprising a compressor, a condenser downstream of the compressor, a condenser downstream of the condenser, an evaporator arranged between the compressor and the throttle device, and a drying device which is adapted to supply the refrigerant of the refrigerant circuit with moisture withdraw and which is set up to provide an adjustable storage volume for the refrigerant of the refrigerant circuit.
  • the refrigerant circuit is provided in particular for a household refrigerator.
  • Another aspect of the invention relates to a domestic refrigeration appliance, comprising an inner container with a coolable interior and the refrigerant circuit according to the invention, which is intended to cool the interior.
  • the domestic refrigerator according to the invention is for example a household refrigerator, a household freezer or a fridge-freezer.
  • the refrigerant circuit according to the invention therefore comprises the compressor, the condenser, the throttle device and the evaporator.
  • the refrigerant circuit is also filled with a refrigerant, as is generally known to those skilled in the art.
  • the amount of refrigerant in the refrigerant circuit of a household refrigerator is usually chosen so that at the design point results in a relatively low, if not the lowest possible energy consumption. However, for operating conditions other than the design point, this amount is typically no longer the optimum amount of refrigerant. For example, with a variation of the ambient temperatures by ⁇ 8 ° C, the theoretically optimal amount of refrigerant of a particular Eintemperaturzonenhaushalts holte réelles moves between 22g and 33g. At an ambient temperature of 17 ° C, e.g. the calculated energy consumption 2% of the refrigerant compared to the optimum value achievable with 32g, with larger temperature deviations significantly higher consumption increases in the double-digit percentage range are achieved due to the parabolic course.
  • Refrigerant circuits of domestic refrigerators are normally designed as closed refrigerant circuits and therefore comprise a fixed amount of refrigerant. Due to the specially designed drying device of the refrigerant circuit according to the invention, which is not only set up to extract moisture from the refrigerant, but also provides an adjustable storage volume for the refrigerant, a dynamic adjustment of the effective amount of refrigerant in the refrigerant circuit can be achieved. Because of the closed refrigerant circuit, however, the refrigerant is not physically supplied or removed, but only prevented its evaporation and condensation, especially during the life of the compressor.
  • the drying device is also set up to provide an adjustable storage volume for the refrigerant of the refrigerant circuit.
  • the drying device is arranged between the condenser and the throttle device according to a preferred variant of the refrigerant circuit according to the invention.
  • the drying device comprises e.g. a drying material.
  • a drying material This is in particular a sorption drying material which is able to extract moisture from the refrigerant of the coolant circuit.
  • the sorption drying material is zeolite, for example.
  • the drying device of the refrigerant circuit according to the invention comprises, for example, a housing which has an inlet through which the refrigerant enters the housing and an outlet through which the refrigerant leaks the drying device. Within the housing, the drying material may be arranged. According to a preferred embodiment of the refrigerant circuit according to the invention, the housing of the drying device has a side wall in which at least partially extends the output in the vertical direction.
  • the drying device may preferably have a closing device which is set up, depending on the position, partially to close the outlet starting from its lower end, or which is arranged to open the outlet completely in one position and in at least one further position starting from its lower Partially close the end. As a result, can accumulate below the partially closed outlet refrigerant, whereby the amount of effective is reduced for the refrigerant circuit available refrigerant. Depending on the position of the closing device thus results in an adjustable storage volume for the refrigerant.
  • the side wall of the housing is formed circular-cylindrical at least in the region of the output in the direction of the interior of the housing inside.
  • the closing device is then formed as a cylindrical wall with increasing height in the circumferential direction and rotatably supported.
  • the drying device may comprise an actuator coupled to the closing device, by means of which the position of the closing device is adjustable.
  • the actuator may be disposed within the housing, but preferably outside the housing of the drying device.
  • the actuator may preferably be formed as at least one electromagnet, which acts together to adjust the closing device with this.
  • the at least one electromagnet may preferably be mounted outside the housing of the drying device, whereby special sealing measures in the context of the actuator can be reduced, if not avoided. Since stable positions of the cylindrical wall result for all positions or positions of the cylindrical wall, no permanent current flow through the at least one electromagnet is required.
  • the housing of the drying device has a bottom, in which the outlet is arranged.
  • the drying device then preferably comprises a hollow cylindrical body projecting through the outlet into the interior of the housing and displaceably mounted longitudinally, which depending on the position protrudes into the interior of the housing to a different extent.
  • the body is in particular hollow cylindrical shape or designed as an inner tube. Depending on how far the hollow cylindrical body protrudes into the housing, results in a different sized storage volume for the refrigerant, which is established between the bottom and the height of the hollow cylindrical body with which the body protrudes into the housing.
  • the drying device may comprise an actuator coupled to the hollow cylindrical body, by means of which the position of the hollow cylindrical body is adjustable to adjust the provided by the drying device storage volume for the refrigerant.
  • the actuator may be disposed within the housing, but preferably outside the housing of the drying device.
  • the actuator may preferably be formed as at least one electromagnet, which cooperates with the hollow cylindrical body for adjusting the storage volume provided by the drying device.
  • the at least one electromagnet may preferably be mounted outside the housing of the drying device, whereby special sealing measures in the context of the actuator can be reduced, if not avoided.
  • the energy consumption can be reduced by the effective amount of refrigerant is adjusted by adjusting the storage volume to the outside temperature. Due to the dynamic adaptation of the effective amount of refrigerant, a household refrigeration appliance can be operated in a way that improves consumption even under variable environmental conditions. This is particularly important if future energy labels take into account consumption under different environmental conditions. In addition, a variable effective charge of refrigerant can also Helpful in achieving short-term required cooling capacity, eg freezing capacity, to be without having to accept negative effects at the design point.
  • short-term required cooling capacity eg freezing capacity
  • Fig. 2 shows a refrigerant circuit of the household refrigerator
  • Figures 3-5 different views of a drying device of
  • Fig. 6 shows an alternative drying device.
  • Fig. 1 shows a household refrigerating appliance 1 and an inner container 2 having a coolable interior, which is divided in the case of the present embodiment in a freezer compartment 3 and a cooling chamber 4 arranged below the freezer compartment 3.
  • the freezer compartment 3 is used, for example, for deep-freezing frozen goods at e.g. about minus 18 degrees Celsius.
  • the domestic refrigerator 1 comprises at least one refrigerant circuit for cooling the freezer compartment 3 and the refrigerator compartment 4.
  • a common refrigerant circuit may be provided, e.g. a provided for cooling the cooling chamber 4 evaporator and provided for cooling the freezer compartment 3 evaporator comprises.
  • the household refrigerator 1 may also have separate refrigerant circuits for the freezer compartment 3 and the refrigerator 4. 2, a refrigerant circuit 20 for cooling the refrigerator compartment 4 is shown as an example.
  • the household refrigerator 1 in the case of the present embodiment, two door leaves 5, 6 for closing the freezer compartment 3 and the refrigerator 4.
  • the door leaves 5, 6 open the freezer compartment 3 and the refrigerator 4 are accessible.
  • a plurality of door racks 7 are arranged for storing refrigerated goods in the case of the present embodiment.
  • a freezer compartment 3 for example, designed as a support grid 8 shelf and in the refrigerator 4 a plurality of shelves 9 are arranged for storing refrigerated goods.
  • a drawer 10 In the lower region of the cooling space 4, in particular a drawer 10 is arranged, can be stored in the refrigerated goods.
  • the household refrigerating appliance 1 further comprises a control device 1 1 shown in FIG. 2, which is set up to control the refrigerant circuit (s), if appropriate, the refrigerant circuit 20 during operation of the household refrigerating appliance 1 such that the freezer compartment 3 and the refrigerator compartment 4 are at least approximately predetermined or adjustable target temperatures, as is known in the art in principle.
  • a control device 1 1 shown in FIG. 2 which is set up to control the refrigerant circuit (s), if appropriate, the refrigerant circuit 20 during operation of the household refrigerating appliance 1 such that the freezer compartment 3 and the refrigerator compartment 4 are at least approximately predetermined or adjustable target temperatures, as is known in the art in principle.
  • the refrigerant circuit 20 of the freezer compartment 3 comprises a compressor 21, a condenser 22 connected downstream of the compressor 21, a throttle device 23 connected downstream of the condenser 22, which is designed in particular as a throttle or capillary tube, and an evaporator 24 which is between the throttle device 23 and the compressor 23 is arranged.
  • the compressor 21 is e.g. arranged in a machine room of the household refrigerator 1, e.g. behind the drawer 10 outside the refrigerator 4 is arranged.
  • the refrigerant circuit 20 comprises a drying device 31 shown in more detail in FIGS. 3 to 5, which is arranged between the throttle device 31 and the condenser 22 in the refrigeration cycle 20.
  • FIG. 3 shows a top view of the drying device 31 in a sectional illustration
  • FIGS. 4 and 5 show side views of the drying device 31 in sectional views.
  • the drying device 31 comprises a housing 32.
  • a drying material 33 for example a sorption drying material, in particular a zeolite, which is provided to remove moisture from the refrigerant of the coolant circuit 20.
  • the housing 32 is tubular or hollow cylindrical, in particular hollow cylindrical in shape.
  • it comprises a hollow-cylindrical or tubular side wall 34 which extends in the vertical direction, a bottom 35 closing off the side wall 34 and a wall 36 closing off the side wall 34 upward.
  • the wall 36 terminating upwards is in particular dome-shaped.
  • the bottom 35 of the housing 32 is particularly flat.
  • the housing 32 has an inlet 37 which is connected to an outlet of the condenser 22, not shown, so that refrigerant originating from the condenser 22 is able to flow in the direction of an arrow 38 into the interior of the housing 32.
  • the entrance 37 is arranged in particular on the wall 34 which shoots off the side wall 34 at the top.
  • the housing 32 includes a drain or outlet 39, which is connected to an input, not shown, of the throttle device 23, so that the refrigerant from the drying device 31 in the direction of an arrow 40 to the throttle device 23 is able to flow.
  • the output 39 is arranged in particular on the side wall 34. The output 39 is thus arranged laterally on the housing 32 of the drying device 31.
  • the output 39 is slot-shaped.
  • the output 39 extends in particular from the bottom 35 starting over at least part of the side wall 34.
  • a closure device 41 is disposed within the housing 32, which is arranged depending on the position of the output 39 from the bottom 35 of the housing 32 to close to a height h. This makes it possible that, depending on the position of the closing device 41, the drying device 31 or its housing 32 provides a different or adjustable storage volume for collecting the liquid refrigerant of the refrigeration cycle 20.
  • the closing device 42 is connected in particular to the control device 11. Thus, it is the control device 1 1 possible, the To open the closing device 41 to automatically adjust the storage volume of the drying device 31 for collecting the cooling liquid.
  • the closing device 41 is formed as a tubular or hollow circular wall 42 having a height which increases in the direction of rotation, which is rotatably or pivotably mounted with respect to a vertically extending longitudinal axis 43 in the direction of a double arrow 46.
  • the closing device 41 designed as a hollow-cylindrical wall 42 is designed such that its outwardly directed side 44 rests against the inside 45 of the side wall 34 of the housing 32.
  • the wall 42 of the closing device 41 is in the case of the present embodiment in its plan view not designed as a complete circular hollow cylinder, but only as a partial circular hollow cylinder.
  • the closing device 41 designed as a wall 42 with respect to the longitudinal axis 43, in particular controlled by the control device 11, may be provided with an actuator controlled in particular by the control device 11, which is arranged inside or outside the housing 32. If this is e.g. arranged as an actuator actuator disposed outside of the housing 32, the movement of the hollow cylindrical wall 42 in the interior of the housing 32 can be generated by means of electromagnets.
  • the drying device 31 has as an actuator two electric coils or electromagnets 47, which are arranged outside the housing 32 of the drying device 31 in the amount of the closing device 41.
  • the electromagnets 47 can, in particular under the control of the control device 1 1, be subjected to an electrical voltage or an electric current and cooperate with the designed as a hollow cylindrical wall 42 closing device 41 together, so that depending on the applied voltage or depending on the applied current Closing device 41 about the longitudinal axis 43rd moved in one of the directions of the double arrow 46.
  • the output 39 it is possible to thus open the output 39 completely or to close to a maximum height.
  • it is provided, when switching on or before switching on the compressor 21, or while it is turned on, to bring the closing device 41 in a position in which the output 39 is closed to a desired height h. After switching off the compressor 21, the height h of the storage volume is reduced again, if not minimized, ie the closing device 41 is moved in such a way that the output 39, if then, is closed relatively little, for example by losses of refrigerant evaporating outside the cooling container to avoid.
  • FIG. 6 shows a further drying device 61 which can be used instead of the drying device 31 shown in FIGS. 3 to 5 for the refrigerant circuit 21.
  • components of the drying device 61 shown in FIG. 6, which are substantially identical in construction and function to the drying device 21 shown in FIGS. 3 to 5, are given the same reference numerals.
  • the drying device 61 shown in FIG. 6 differs substantially from the drying device 21 shown in FIGS. 3 to 5 in that it has no closing device 41.
  • the drain or the output 39 in the bottom 35 of the housing 32 is arranged.
  • the drying device 61 is also set up to provide an adjustable storage volume for the refrigerant.
  • the drying device 61 comprises a hollow cylindrical body 62 or an inner tube, which is mounted along the longitudinal axis 43 displaceable relative to a double arrow 63 and depending on the position or set height h different distances in the interior of the housing 32 through the output 39th protrudes into it. This results in a storage volume for the refrigerant depending on the set height h.
  • an actuator controlled in particular by the control device 11 can be provided, which is arranged inside or outside the housing 32. If, for example, the actuator embodied as an actuator is arranged outside the housing 32, the movement of the hollow cylindrical body 62 can be generated by means of electromagnets.
  • the drying device 61 as an actuator on two electric coils or solenoids 64, which are arranged outside the housing 32 of the drying device 31 at the level of the hollow cylindrical body 62.
  • the electromagnets 64 can, in particular under the control of the control device 1 1, be acted upon by an electrical voltage or an electric current and cooperate with the hollow cylindrical body 62, so that depending on the applied voltage or depending on the applied current, the hollow cylindrical body 62 along the longitudinal axis 43 moves in one of the directions of the double arrow 63. Thereby, it is possible to change the storage volume for the refrigerant within the housing 32 by means of the hollow cylindrical body 62.
  • the hollow cylindrical body 62 when switching on or before switching on the compressor 21, or while it is switched on, it is provided to bring the hollow cylindrical body 62 into a position in which the hollow cylindrical body 62 up to a desired height h protrudes into the interior of the housing 32.
  • the height h of the storage volume is reduced again, if not minimized, that is, the hollow cylindrical body 62 is moved so that it little, if not at all, projects into the interior of the housing 32, for example, losses by avoiding refrigerant evaporating outside of the refrigerated container.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

La présente invention concerne un circuit frigorifique (20) et un appareil frigorifique électroménager (1) comportant un tel circuit frigorifique (20). Le circuit frigorifique (20) comporte un compresseur (21), un condenseur (22) situé en aval du compresseur (21), un dispositif d'étranglement (23) situé en aval du condenseur (22), un évaporateur (24) situé entre le compresseur (21) et le dispositif d'étranglement (23), et un dispositif de séchage (31, 61) conçu pour extraire l'humidité du milieu frigorifique du circuit frigorifique (20) et pour mettre à disposition un volume de stockage réglable pour le milieu frigorifique du circuit frigorifique (20).
PCT/EP2012/071265 2011-11-02 2012-10-26 Circuit frigorifique et appareil frigorifique électroménager comportant un circuit frigorifique Ceased WO2013064428A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011085619.6 2011-11-02
DE201110085619 DE102011085619A1 (de) 2011-11-02 2011-11-02 Kältemittelkreislauf und Haushaltskältegerät mit einem Kältemittelkreislauf

Publications (2)

Publication Number Publication Date
WO2013064428A2 true WO2013064428A2 (fr) 2013-05-10
WO2013064428A3 WO2013064428A3 (fr) 2013-09-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/071265 Ceased WO2013064428A2 (fr) 2011-11-02 2012-10-26 Circuit frigorifique et appareil frigorifique électroménager comportant un circuit frigorifique

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DE (1) DE102011085619A1 (fr)
WO (1) WO2013064428A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN120120782A (zh) * 2025-04-21 2025-06-10 浙江东峰制冷配件有限公司 一种汽车空调可调节能式储液器

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1816447A1 (de) 1968-12-21 1970-06-25 Bauknecht Gmbh G Verfahren und Vorrichtung zur Beeinflussung von Kuehlraumtemperaturen

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JP2550632B2 (ja) * 1988-01-20 1996-11-06 日本電装株式会社 冷凍サイクル
US5758514A (en) * 1995-05-02 1998-06-02 Envirotherm Heating & Cooling Systems, Inc. Geothermal heat pump system
JP4042637B2 (ja) * 2003-06-18 2008-02-06 株式会社デンソー エジェクタサイクル
KR101000054B1 (ko) * 2003-07-11 2010-12-10 엘지전자 주식회사 공기조화기의 가변용량형 어큐물레이터
US6959557B2 (en) * 2003-09-02 2005-11-01 Tecumseh Products Company Apparatus for the storage and controlled delivery of fluids
JP2008292109A (ja) * 2007-05-28 2008-12-04 Calsonic Kansei Corp 可変容量受液器

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
DE1816447A1 (de) 1968-12-21 1970-06-25 Bauknecht Gmbh G Verfahren und Vorrichtung zur Beeinflussung von Kuehlraumtemperaturen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN120120782A (zh) * 2025-04-21 2025-06-10 浙江东峰制冷配件有限公司 一种汽车空调可调节能式储液器

Also Published As

Publication number Publication date
DE102011085619A1 (de) 2013-05-02
WO2013064428A3 (fr) 2013-09-26

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