EP1040303A1 - Refrigerating device - Google Patents
Refrigerating deviceInfo
- Publication number
- EP1040303A1 EP1040303A1 EP98966354A EP98966354A EP1040303A1 EP 1040303 A1 EP1040303 A1 EP 1040303A1 EP 98966354 A EP98966354 A EP 98966354A EP 98966354 A EP98966354 A EP 98966354A EP 1040303 A1 EP1040303 A1 EP 1040303A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- evaporator
- refrigerant
- injection points
- compartments
- appliance 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.)
- Granted
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
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/04—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in series
-
- 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
- F25B2600/25—Control of valves
- F25B2600/2511—Evaporator distribution valves
-
- 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
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/04—Refrigerators with a horizontal mullion
-
- 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
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/16—Convertible refrigerators
Definitions
- the invention relates to a refrigeration device with a heat-insulating housing, within which at least two thermally separated refrigeration compartments of different temperature are arranged, each of which is cooled by an evaporator equipped with a corresponding cooling capacity, the evaporators serving to cool the compartments being connected together in series in a refrigeration cycle arranged one behind the other and acted upon by a compressor located in the refrigeration circuit with refrigerant.
- a two-temperature refrigerator is proposed in DE-OS 35 08 805, the thermally separated compartments of different temperatures are cooled by one evaporator each.
- the evaporators are located in a refrigeration circuit with a single compressor, which, controlled by regulating bodies designed as heatable throttles, either applies the evaporators individually one after the other or simultaneously with liquid refrigerant, depending on the cooling requirement in the compartments.
- a compressor is connected downstream of the compressor, which has a heating element for expelling the liquid refrigerant stored in its collecting space.
- the heating element assigned to the collector is activated with a lead time before the compressor is started up, in order then to feed the stored liquid refrigerant to the refrigerant circuit.
- the thermally separated refrigeration compartments of different temperatures are connected in series within a refrigeration circuit equipped with a single compressor and, depending on the cooling demand, controlled by lockable throttle elements, each individually or can be acted upon together with refrigerant, the amount of refrigerant being matched to the charge of the two evaporators.
- the amount of refrigerant available in the entire refrigeration circuit in order to avoid overfilling an individual evaporator to be operated, is divided by a tap of the condenser which can be shut off by means of a throttle element, according to the capacity of this evaporator.
- the tapping of the condenser only the section lying in front of this tapping is flowed through by the refrigerant which is forcibly circulated by the compressor.
- the invention has for its object to provide a possibility for regulating the temperature in the warmer refrigeration compartment in a refrigerator according to the preamble of claim 1 with simple structural measures while avoiding the disadvantages of the prior art.
- This object is achieved according to the invention in that on the evaporator for generating the lower temperature at least two spaced apart in the flow direction of the driven refrigerant, a portion of the refrigerant channel arrangement of the evaporator between injection points are provided, each of the injection points upstream a throttle device and each the injection points can be optionally controlled by deflection means.
- the flow path for the refrigerant is shortened or lengthened, depending on the injection point in which the refrigerant is supplied, in the former case the evaporator located at the end of the series connection of the refrigerant circuit, for example, when the regulator is in the "warm” position, the refrigerant no longer flows through it, as a result of which the temperature in the compartment cooled by this evaporator can be regulated.
- the flow path of the refrigerant is shortened in a second operating mode, for example for the "cold" control position, the evaporator located in the end in series connection of the evaporators is charged with refrigerant so that the temperature in this compartment drops.
- the evaporator is designed to produce the lower temperature as an essentially C-shaped (in the form of a lying "U") freezer compartment evaporator with an evaporator ceiling, an evaporator rear wall and an evaporator bottom, one of the injection points being one in the evaporator ceiling and the other is in the evaporator bottom, which means that in both operating modes the refrigerant that accumulates in the evaporator bottom while the compressor is idle is available for refrigeration when the compressor starts up.
- one of the refrigerant injection points is arranged in the vicinity of the outflow-side end of the evaporator in order to generate the lower temperature.
- a substantial portion of the entire refrigerant channel length of the evaporator for generating the lower temperature is arranged between them, so that depending on which of the refrigerant injection points is used for injecting the refrigerant, a significant shortening or lengthening of the refrigerant flow path is effected , which produces a particularly clearly appealing temperature control for the compartment cooled by the evaporator connected in series at the end.
- the evaporators are particularly easy to manufacture from a production point of view if, according to a next preferred embodiment of the object of the invention, it is provided that the throttle elements have the same flow resistance upstream of the injection points.
- the spaced-apart injection points on the evaporator used to generate the lower temperature can be used particularly efficiently if, according to a further preferred embodiment of the object of the invention, it is provided that the evaporator for generating the lower temperature is designed as a c-shaped freezer compartment evaporator, which in its Cover one of the injection points and have the other injection point in its base.
- the control range of the evaporator located at the end in the series connection of the evaporators can be increased in a particularly simple manner if, according to a next preferred embodiment of the subject of the invention, it is provided that throttle elements with different flow resistance are connected upstream of the injection points on the evaporator in order to generate the lower temperature.
- the amount of refrigerant required to optimize the temperature for cooling the compartments in the different controller positions of the temperature controller is particularly precisely tunable if, according to a further preferred embodiment of the subject of the invention, it is provided that the refrigerant channel arrangement located after the respective injection point has essentially the same receiving volume having.
- a deflection member can be controlled particularly simply and reliably, for example using temperature sensors, if, according to a last preferred embodiment of the subject of the invention, it is provided that the deflection member is designed as an electrically operated 3/2-way solenoid valve.
- FIG. 1 shows a simplified, schematic illustration of a refrigeration device having three refrigeration compartments, the freezer compartment evaporator of which has two spaced-apart, optionally controllable refrigerant injection points, of which the one located at the beginning of the refrigerant channel arrangement is actuated in a first actuation type,
- Fig. 3 in a simplified schematic representation of a two-temperature refrigeration device provided on the evaporator of his fresh cooling compartment, arranged at a distance from each other, optionally controllable injection points.
- a refrigeration device 10 having three temperature zones is shown with a heat-insulating housing 11, within which three refrigeration compartments arranged one above the other and thermally separated by heat-insulating intermediate floors 12 are provided.
- the one below is nem temperature range from, for example, + 0.5 ° C. to + 3 ° C., fresh storage compartment 13 with an evaporator 14, the normal cooling compartment 15 with an evaporator 16, which is arranged directly above the fresh storage compartment 13 and has a temperature range from + 5 ° C. to + 8 ° C. educated.
- a freezer compartment 17 which is in a temperature range of ⁇ 18 ° C., for the cooling of which an evaporator 18 with a cross section which is essentially C-shaped is provided with a ceiling section, a rear wall and a floor section.
- the evaporator 18 is equipped with a refrigerant channel arrangement 19 which extends continuously over its ceiling section, its rear wall and its bottom section.
- the evaporator 18 has a first injection point 20 in its ceiling section and a second injection point 21 in its bottom section, so that between the two injection points 20 and 21 there is a certain length section of the refrigerant channel arrangement 19, the injection point 21 being a connection point 21.1 for the Coupling of the sections formed by the arrangement of the injection points 20 and 21 is arranged downstream of the channel arrangement 19.
- a throttle device 22 or 23, which serves to reduce the pressure, is connected upstream of the two injection points 20 and 21, the throttle device 22 being connected on the output side to the injection point 20 and the throttle device 23 on the output side being connected to the injection point 21.
- the input sides of the throttle devices 22 and 23 are connected to a deflection member 24 designed as an electrically operable 3/2-way solenoid valve, the input side of the throttle device 22 being connected by the deflection member 24 in a valve position I and the input side of the throttle device 23 in a valve position II Refrigerant can be applied.
- the deflection member 24 is connected on the input side via a refrigerant line 25 to a condenser 26, which is connected on the inlet side to the pressure side of a refrigerant compressor 27, which is connected on the intake side in terms of flow technology to the refrigerator compartment evaporator 16, which at the end of the evaporator arranged in series connection 14, 16 and 18 is provided.
- the temperatures prevailing in the individual refrigeration compartments 13, 15 and 17 of the refrigeration device 10 are determined by a regulating device which is arranged in the normal refrigeration compartment and is not shown in the present case and which, depending on the regulator position, switches the solenoid valve 24 into its operating position I or into its operating position II. If the refrigeration device 10 is operated, for example, in the "warm” controller position, the solenoid valve 24 is in its operating position I shown in FIG. 1. In this operating position, the refrigerant which is forcibly conveyed by the refrigerant compressor 27 is Tel according to the reinforced lines shown in Fig.
- the amount of refrigerant circulated by the refrigerant compressor 27 in the refrigeration circuit is dimensioned such that in the "warm" control position, in which the solenoid valve 24 is in its operating position I, the amount of refrigerant is no longer used to cool the evaporator in series connection lying evaporator 16 is sufficient so that the normal cooling compartment 15 is no longer charged with liquid refrigerant in this regulator position and is therefore no longer cooled.
- the solenoid valve 24 is switched to its operating position II shown in FIG. 2.
- the refrigerant forcedly circulated by the refrigerant compressor 27 is fed via the throttling device 23 to the injection point 21 arranged in the bottom of the freezer compartment evaporator 18 (see reinforced lines), as a result of which a certain length of the refrigerant channel arrangement of the evaporator 18 is hidden from the refrigeration cycle.
- the liquid refrigerant then flows over the rear wall and the ceiling of this evaporator into the evaporator 14 of the fresh storage compartment 13 immediately downstream in the series connection, from where it is fed via the outlet thereof to the evaporator 16 for cooling the normal cooling compartment 15 is.
- the channel length through which liquid refrigerant flows in both operating modes is to be dimensioned with respect to its length such that in the respective operating case, refrigerant channel sections of liquid refrigerant are at least approximately the same length are flowed through.
- refrigerant canal routes of the same length it is also possible to measure them in different lengths but with an almost identical intake volume.
- FIG. 3 shows a further possible application of the invention using a two-temperature cooling device 30.
- This has a heat-insulating housing 31 within which there is an overhead normal cooling compartment 32 with an evaporator 33 serving to cool it and a fresh storage compartment 35 separated from the normal cooling compartment 32 in a heat-insulating manner by an intermediate floor 34.
- the fresh storage compartment is equipped with an evaporator 36, the refrigerant channel arrangement 37 of which can be acted upon by two refrigerant injection points 38 and 39, the refrigerant injection point 38 being provided at the beginning of the refrigerant channel arrangement 37 and the refrigerant injection point 39 approximately in the middle of the refrigerant channel arrangement 37, so that a certain channel length of the refrigerant channel arrangement 37 remains between the two refrigerant injection points 38 and 39.
- the injection point 39 is followed by a connection point 39.1 for coupling the sections of the channel arrangement 37 formed by the arrangement of the injection points 38 and 39.
- the refrigerant injection points 38 and 39 are each preceded by a throttle device 40 or 41, both of which have the same flow resistance and which are connected with their inflow side to the outputs of an electrically operated 3/2-way solenoid valve 42.
- the solenoid valve 42 is fluidly connected on the input side to a condenser 43, which is connected on the inflow side to the pressure side of a refrigerant compressor 44, the suction side of which is connected in terms of flow technology to the outlet of the evaporator 33 connected in series with the evaporator 36 in the normal cooling compartment 32.
- Both the temperature in the normal cooling compartment 32 and that in the fresh storage compartment 35 is determined by a control device 45 which is arranged in the normal cooling compartment 32 and is not shown in the present case. If the control device 45 is in its "cold" control position, for example, the solenoid valve 42 is switched to its operating position II (refrigerant flow corresponding to the reinforced line), in which the refrigerant forcedly circulated by the refrigerant compressor 44 via the throttle device 41 of the injection point 39 of the evaporator 36 is supplied, from where it flows over the remaining part of its refrigerant channel arrangement 37 into the evaporator 33 for cooling the normal cooling compartment 32.
- position II refrigerant flow corresponding to the reinforced line
- the solenoid valve 42 is switched into its operating position I, whereby the injection point 38 at the beginning of the refrigerant channel arrangement 37 of the evaporator 36 is supplied with liquid refrigerant via the throttle device 40 is.
- the evaporator 33 connected downstream of the evaporator 36 is no longer loaded with liquid refrigerant and the normal cooling compartment 32 is therefore no longer cooled.
- the injection point 39 downstream of the injection point 38 is to be arranged on the evaporator 36 such that the refrigerant channel length between the two injection points essentially corresponds to the refrigerant channel length of the evaporator 33 corresponds.
- one of the refrigeration compartments is exposed to a temperature load due to a considerable amount of freshly stored refrigerated goods, e.g. an electronically controlled forced switchover of the refrigerant flow to the evaporator takes place in the temperature-loaded refrigeration compartment.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI9830640T SI1040303T1 (en) | 1997-12-19 | 1998-12-17 | Refrigerating device |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19756860 | 1997-12-19 | ||
DE19756860A DE19756860A1 (en) | 1997-12-19 | 1997-12-19 | Refrigerator with injection points at evaporator to generate lower temperature |
PCT/EP1998/008276 WO1999032835A1 (en) | 1997-12-19 | 1998-12-17 | Refrigerating device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1040303A1 true EP1040303A1 (en) | 2000-10-04 |
EP1040303B1 EP1040303B1 (en) | 2004-06-09 |
Family
ID=7852735
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98966354A Expired - Lifetime EP1040303B1 (en) | 1997-12-19 | 1998-12-17 | Refrigerating device |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1040303B1 (en) |
CN (1) | CN1165720C (en) |
DE (2) | DE19756860A1 (en) |
ES (1) | ES2222622T3 (en) |
TR (1) | TR200001666T2 (en) |
WO (1) | WO1999032835A1 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6266968B1 (en) * | 2000-07-14 | 2001-07-31 | Robert Walter Redlich | Multiple evaporator refrigerator with expansion valve |
DE10140005A1 (en) * | 2001-08-16 | 2003-02-27 | Bsh Bosch Siemens Hausgeraete | Combination refrigerator and evaporator arrangement therefor |
US6931870B2 (en) * | 2002-12-04 | 2005-08-23 | Samsung Electronics Co., Ltd. | Time division multi-cycle type cooling apparatus and method for controlling the same |
DE102004014926A1 (en) | 2004-03-26 | 2005-10-13 | BSH Bosch und Siemens Hausgeräte GmbH | Refrigerating appliance with two storage compartments |
CN100339665C (en) * | 2004-05-11 | 2007-09-26 | 梁嘉麟 | Regulation and control method for alternating temperature and fixing temperature of composite type refrigerator supported by single compressor |
CN100458317C (en) * | 2004-09-07 | 2009-02-04 | 乐金电子(天津)电器有限公司 | Refrigerating circulator of straight-cooled refrigerator |
CN1323267C (en) * | 2004-12-31 | 2007-06-27 | 广东科龙电器股份有限公司 | Multistage evaporation type air conditioner |
CN101351677B (en) * | 2005-12-29 | 2011-09-14 | 阿塞里克股份有限公司 | A cooling device |
DE102006061091A1 (en) * | 2006-12-22 | 2008-06-26 | BSH Bosch und Siemens Hausgeräte GmbH | Refrigerator with at least two thermally separated compartments |
DE102009000840A1 (en) | 2009-02-13 | 2010-08-19 | BSH Bosch und Siemens Hausgeräte GmbH | Refrigeration unit with uniform temperature distribution |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2016128B (en) * | 1978-02-23 | 1982-12-08 | Tokyo Shibaura Electric Co | Freezer unit |
JPS59164860A (en) * | 1983-03-09 | 1984-09-18 | 株式会社東芝 | Refrigeration cycle of refrigerator |
DE3508805A1 (en) | 1985-03-12 | 1986-09-18 | Bosch Siemens Hausgeraete | Cooling furniture, in particular two-temperature refrigerator |
DE4020537A1 (en) | 1990-06-28 | 1992-01-02 | Bauknecht Hausgeraete | Refrigeration circuit for combined refrigerator and freezer - uses blocking chokes for output and tap-off from condenser to provide different operating modes |
US5209073A (en) * | 1990-11-01 | 1993-05-11 | Fisher & Paykel Limited | Cooling device and method with multiple cooled chambers and multiple expansion means |
DE19535144A1 (en) * | 1995-09-21 | 1997-03-27 | Bosch Siemens Hausgeraete | Domestic freezer with fast-freeze facility |
-
1997
- 1997-12-19 DE DE19756860A patent/DE19756860A1/en not_active Withdrawn
-
1998
- 1998-12-17 CN CNB988123576A patent/CN1165720C/en not_active Expired - Lifetime
- 1998-12-17 EP EP98966354A patent/EP1040303B1/en not_active Expired - Lifetime
- 1998-12-17 WO PCT/EP1998/008276 patent/WO1999032835A1/en active IP Right Grant
- 1998-12-17 ES ES98966354T patent/ES2222622T3/en not_active Expired - Lifetime
- 1998-12-17 DE DE59811550T patent/DE59811550D1/en not_active Expired - Lifetime
- 1998-12-17 TR TR2000/01666T patent/TR200001666T2/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9932835A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE59811550D1 (en) | 2004-07-15 |
ES2222622T3 (en) | 2005-02-01 |
EP1040303B1 (en) | 2004-06-09 |
TR200001666T2 (en) | 2000-11-21 |
CN1282409A (en) | 2001-01-31 |
DE19756860A1 (en) | 1999-06-24 |
WO1999032835A1 (en) | 1999-07-01 |
CN1165720C (en) | 2004-09-08 |
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