EP0218560A2 - Refrigerator having refrigerating compartment with zones at different temperatures - Google Patents
Refrigerator having refrigerating compartment with zones at different temperatures Download PDFInfo
- Publication number
- EP0218560A2 EP0218560A2 EP86830280A EP86830280A EP0218560A2 EP 0218560 A2 EP0218560 A2 EP 0218560A2 EP 86830280 A EP86830280 A EP 86830280A EP 86830280 A EP86830280 A EP 86830280A EP 0218560 A2 EP0218560 A2 EP 0218560A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- refrigerating compartment
- cooling circuit
- zone
- zones
- elements
- 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
- 238000001816 cooling Methods 0.000 claims abstract description 31
- 230000003068 static effect Effects 0.000 claims abstract description 21
- 230000000630 rising effect Effects 0.000 claims description 5
- 235000014121 butter Nutrition 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 235000013372 meat Nutrition 0.000 description 2
- 235000013336 milk Nutrition 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- 210000004080 milk Anatomy 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 235000013351 cheese Nutrition 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 235000013601 eggs Nutrition 0.000 description 1
- 235000012055 fruits and vegetables Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
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
-
- 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
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
- F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators
-
- 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
- F25D2317/06—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 with forced air circulation
- F25D2317/061—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 with forced air circulation through special compartments
-
- 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
Definitions
- the present invention relates to a cooling circuit having a static evaporator for a refrigerating compartment containing zones at different temperatures. More particularly, the present invention relates to a cooling circuit that allows two or more zones at different temperatures to be obtained within the refrigerating compartment of a refrigerator, employing a static evaporator as a cooling system.
- refrigerators which are commercially available employing a static evaporator for cooling the refrigerating compartment have within said compartment a substantially uniform temperature distribution, except for a slight stratification of colder temperatures at the bottom.
- the maximum temperature difference occurring between the various zones is of about 2-3°C.
- ventilated evaporators are employed in freezing compartments as the dehydrating action of such evaporators on foodstuffs which are usually stored within the refrigerating compartment causes said foodstuffs to be badly conserved.
- the ideal temperature for a good conservation of eggs, butter, milk etc. is of about 5°C, whereas in the case of vegetables and fruit the ideal temperature is of about 7° and for meat and fish it is of about 0°C.
- the present invention proposes the realization of a static evaporator cooling system comprising a number of opportunely sized series-connected elements so as to obtain the desired temperature in each zone, said different temperatures being obtained also due to a suitable structural exploitation of cold air tendency to become layered toward the bottom of a space.
- a cooling circuit having a static evaporator for a refrigerating compartment with different temperatures, said cooling circuit comprising a static evaporator consisting of different elements which are series- fed by the compressor in the rising direction, a number of conveyor wall means being provided within said refrigerating compartment, which means form a way for the flow of the descending cold air as well as port means which are arranged inferiorly with respect to said conveyor wall means, which port means form a way for the descending cold air through the zone of the refrigerating compartment adjacent to the zone wherein the compressor is housed.
- said static evaporator is made up of two series-connected elements which are fed by the compressor in the rising direction, the first one of said elements having a cooling power lower than that of the second one which is arranged within the upper zone of said refrigerating compartment.
- said conveyor wall means are arranged in the parallel direction with respect to the bottom wall of the refrigerator, in correspondence to the first of said elements of the static evaporator, so as to convey cold air coming from the upper zone of the refrigerating compartment into such zone.
- said port means are arranged at the lower part with respect to the cooling zone that is cooled by said first element, so as to convey a part of cold air canalized between said conveyor wall means and said back wall of the refrigerating compartment in the lowest zone of said refrigerating compartment.
- said elements of the static evaporator, said conveyor wall means and said port means are so sized as to obtain within the refrigerating compartment three zones at different temperatures, respectively with the highest temperature at the bottom part, the lowest temperature at the middle part and the middle temperature at the top part.
- said three zones will be respectively at temperatures of about +7°C, about 0°C and about +5°C.
- numbers 1 and 2 point out respectively the refrigerating compartment and the freezing compartment:
- the cooling circuit of the refrigerating compartment 1 only will be disclosed, because the realization of the cooling circuit of the compartment 2 is independent of the object of the present invention.
- the static evaporator is made up of a number of series-connected elements. Just two elements are shown in the figure, which are pointed out by the reference numbers 3 and 4, but it is clearly evident that a number of said elements can be provided which can be varied according to the specific needings.
- the compressor of the cooling circuit is housed as usually within the housing 5 arranged in the back lower zone of the refrigerating compartment.
- the element 4 of the evaporator shown in Figure 1 is of such a size as to obtain a temperature of about +5°C within in the zone 6 of the compartment 1; see also Figure 3.
- the element 3 of said evaporator is in turn of such a size as to obtain an average temperature of about 0°C within the zone 7 of said compartment 1.
- a conveyor wall 8 is arranged parallel to the bottom wall 9 of the compartment 1, which wall forms a forced way for the flow of cold air descending from the zone 6 as shown by the arrows 10, 11 and,.,after said air has heated subtracting heat from the environment of said zone 7 according to arrow 12 (see Figure 2).
- Arrows 13 and 14 point out respectively the direction of cold air created by said element 4 within the zone 6 and of the hotter air coming from the bottom space.
- the upper zone being at about +5°C whereas the lower zone is at about 0°C, i.e. at the optimal temperatures for storing foodstuffs such as milk, butter, cheese and the like, and meat.
Abstract
Description
- The present invention relates to a cooling circuit having a static evaporator for a refrigerating compartment containing zones at different temperatures. More particularly, the present invention relates to a cooling circuit that allows two or more zones at different temperatures to be obtained within the refrigerating compartment of a refrigerator, employing a static evaporator as a cooling system.
- At the present time, refrigerators which are commercially available employing a static evaporator for cooling the refrigerating compartment have within said compartment a substantially uniform temperature distribution, except for a slight stratification of colder temperatures at the bottom.
- Anyway, the maximum temperature difference occurring between the various zones is of about 2-3°C.
- In order to obtain a refrigerating compartment having zones at different temperatures, some refrigerators are proposed at the present time on the market which make use of a ventilated evaporator also for said refrigerating compartment together with some different types of adjustable channel means that allow the refrigerating air flow to be conveyed into said compartment.
- On the other side, said coupling gives rise to a number of economic drawbacks originating from the employment of a ventilated evaporator as well as from the presence of said channel means.
- Moreover, ventilated evaporators are employed in freezing compartments as the dehydrating action of such evaporators on foodstuffs which are usually stored within the refrigerating compartment causes said foodstuffs to be badly conserved.
- In addition to the solution mentioned above, some other solutions have been proposed which are all characterized by very significative difficulties of a constructive kind.
- It is also well evident that, in order to warrant a good conservation of all foodstuffs stored within the refrigerating compartment, it is necessary to have within said compartment zones at different temperatures.
- More particularly, the ideal temperature for a good conservation of eggs, butter, milk etc. is of about 5°C, whereas in the case of vegetables and fruit the ideal temperature is of about 7° and for meat and fish it is of about 0°C.
- From these date it can be observed that the temperature differences are quite high and that remarkable technical difficulties undoubtedly arise in the attempt at obtaining a temperature difference, A T, of about 7-8°C within the same room and by means of the same cooling system.
- It is quite evident from the above that it is very important to have at once disposal a cooling system such as that proposed by the Applicant, said system allowing to obtain said zones at different temperatures within the refrigerating compartment through the employment of a static evaporator.
- To obtain said object, the present invention proposes the realization of a static evaporator cooling system comprising a number of opportunely sized series-connected elements so as to obtain the desired temperature in each zone, said different temperatures being obtained also due to a suitable structural exploitation of cold air tendency to become layered toward the bottom of a space.
- Accordingly, it is a specific object of the present invention a cooling circuit having a static evaporator for a refrigerating compartment with different temperatures, said cooling circuit comprising a static evaporator consisting of different elements which are series- fed by the compressor in the rising direction, a number of conveyor wall means being provided within said refrigerating compartment, which means form a way for the flow of the descending cold air as well as port means which are arranged inferiorly with respect to said conveyor wall means, which port means form a way for the descending cold air through the zone of the refrigerating compartment adjacent to the zone wherein the compressor is housed.
- According to the particularly preferred embodiment of the cooling circuit of the present invention, said static evaporator is made up of two series-connected elements which are fed by the compressor in the rising direction, the first one of said elements having a cooling power lower than that of the second one which is arranged within the upper zone of said refrigerating compartment.
- Again according to the present invention, said conveyor wall means are arranged in the parallel direction with respect to the bottom wall of the refrigerator, in correspondence to the first of said elements of the static evaporator, so as to convey cold air coming from the upper zone of the refrigerating compartment into such zone.
- In addition, said port means are arranged at the lower part with respect to the cooling zone that is cooled by said first element, so as to convey a part of cold air canalized between said conveyor wall means and said back wall of the refrigerating compartment in the lowest zone of said refrigerating compartment.
- Advantageously, according to the present invention said elements of the static evaporator, said conveyor wall means and said port means are so sized as to obtain within the refrigerating compartment three zones at different temperatures, respectively with the highest temperature at the bottom part, the lowest temperature at the middle part and the middle temperature at the top part.
- More particularly, said three zones will be respectively at temperatures of about +7°C, about 0°C and about +5°C.
- The present invention will be disclosed in the following for illustrative but not for limitative purposes with particular reference to the Figures of the enclosed drawings, wherein:
- Figure 1 shows a schematic view of a longitudinal vertical cross section of a refrigerator working on a cooling circuit according to the present invention;
- Figure 2 shows an exploded perspective view of the refrigerator of Figure 1; and
- Figure 3 shows a refrigerator working on a cooling circuit according to the present invention with the indications pointing out the zones at different temperatures.
- With reference now to Figures from 1 to 3,
numbers - The cooling circuit of the refrigerating
compartment 1 only will be disclosed, because the realization of the cooling circuit of thecompartment 2 is independent of the object of the present invention. - The static evaporator is made up of a number of series-connected elements. Just two elements are shown in the figure, which are pointed out by the
reference numbers - The compressor of the cooling circuit is housed as usually within the
housing 5 arranged in the back lower zone of the refrigerating compartment. - Combinina opportunely the elements of the cooling circuit with the tendency of cold air to become layered towards the bottom space, various temperature combinations can be obtained, one of said combinations which is of special interest being represented in the figures.
- The
element 4 of the evaporator shown in Figure 1 is of such a size as to obtain a temperature of about +5°C within in thezone 6 of thecompartment 1; see also Figure 3. - The
element 3 of said evaporator is in turn of such a size as to obtain an average temperature of about 0°C within thezone 7 of saidcompartment 1. - In order to obtain such temperature in the
zone 7 without oversizing theelement 3, aconveyor wall 8 is arranged parallel to thebottom wall 9 of thecompartment 1, which wall forms a forced way for the flow of cold air descending from thezone 6 as shown by thearrows zone 7 according to arrow 12 (see Figure 2). -
Arrows element 4 within thezone 6 and of the hotter air coming from the bottom space. - In order to obtain a right working of such cooling circuit also with very low working percentages of the compressor it is necessary that the two
elements element 3 is to be fed first, whereas theelement 4 is to be fed after it. - Thus, two zones are obtained within said
compartment 1, the upper zone being at about +5°C whereas the lower zone is at about 0°C, i.e. at the optimal temperatures for storing foodstuffs such as milk, butter, cheese and the like, and meat. - In order to obtain in the lower part of said compartment 1 a zone at an average temperature of about 7°C, which zone is pointed out in the figures by the
reference number 15, it will be sufficient to make theport 16 for the flow from thezone 7 of a suitable size so that a part of cold air conveyed by means of theconveyor wall 8 as well as a part of cold air created by theelement 3 of the static evaporator both flow through saidport 16 instead of following the path pointed out byarrow 11, said air flow going out of the lower part of saidzone 15 following the direction of arrow 17 (see Figure 2). - Thus a zone has been obtained at an average temperature which is optimal for storing fruit and vegetables, with no need for any further element of the static evaporator, just at a point corresponding to the space in which such foodstuffs are stored usually.
- The present invention has been disclosed according to some preferred embodiments of the same, but it is to be understood that modifications and changes can be introduced into the invention by those who are skilled in the art without departing from its spirit and scope for which a priority right is claimed.
Claims (7)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT48657/85A IT1182908B (en) | 1985-10-11 | 1985-10-11 | STATIC EVAPORATOR COOLING CIRCUIT FOR REFRIGERATED TEMPERATURE COMPARTMENT |
IT4865785 | 1985-10-11 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0218560A2 true EP0218560A2 (en) | 1987-04-15 |
EP0218560A3 EP0218560A3 (en) | 1988-05-11 |
EP0218560B1 EP0218560B1 (en) | 1991-01-23 |
Family
ID=11267875
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86830280A Expired EP0218560B1 (en) | 1985-10-11 | 1986-10-01 | Refrigerator having refrigerating compartment with zones at different temperatures |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0218560B1 (en) |
DE (2) | DE3677124D1 (en) |
ES (1) | ES2002831A6 (en) |
IT (1) | IT1182908B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004015341A1 (en) | 2002-08-07 | 2004-02-19 | BSH Bosch und Siemens Hausgeräte GmbH | Refrigerating device with a sub-divided interior |
WO2013098110A3 (en) * | 2011-12-30 | 2013-08-22 | BSH Bosch und Siemens Hausgeräte GmbH | Domestic refrigeration device having a cold storage compartment |
US11402145B1 (en) | 2020-03-24 | 2022-08-02 | Sub-Zero Group, Inc. | Split air flow system |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19736916A1 (en) * | 1997-08-25 | 1999-03-04 | Aeg Hausgeraete Gmbh | Electric refrigeration appliance with different temperature storage zones |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2707871A (en) * | 1952-10-31 | 1955-05-10 | Philco Corp | Refrigeration apparatus |
CH584874A5 (en) * | 1974-11-22 | 1977-02-15 | Koch Ag | |
DE2928774A1 (en) * | 1979-07-17 | 1981-02-12 | Bosch Siemens Hausgeraete | FREEZER WITH A LARGE-ROOMED FREEZER COOLED BY NATURAL CONVECTION |
GB2079424A (en) * | 1980-07-02 | 1982-01-20 | Thorn Domestic Appliances Ltd | Improvements in or relating to cold cabinets |
-
1985
- 1985-10-11 IT IT48657/85A patent/IT1182908B/en active
-
1986
- 1986-10-01 DE DE8686830280T patent/DE3677124D1/en not_active Expired - Lifetime
- 1986-10-01 EP EP86830280A patent/EP0218560B1/en not_active Expired
- 1986-10-01 DE DE198686830280T patent/DE218560T1/en active Pending
- 1986-10-09 ES ES8602524A patent/ES2002831A6/en not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2707871A (en) * | 1952-10-31 | 1955-05-10 | Philco Corp | Refrigeration apparatus |
CH584874A5 (en) * | 1974-11-22 | 1977-02-15 | Koch Ag | |
DE2928774A1 (en) * | 1979-07-17 | 1981-02-12 | Bosch Siemens Hausgeraete | FREEZER WITH A LARGE-ROOMED FREEZER COOLED BY NATURAL CONVECTION |
GB2079424A (en) * | 1980-07-02 | 1982-01-20 | Thorn Domestic Appliances Ltd | Improvements in or relating to cold cabinets |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004015341A1 (en) | 2002-08-07 | 2004-02-19 | BSH Bosch und Siemens Hausgeräte GmbH | Refrigerating device with a sub-divided interior |
WO2013098110A3 (en) * | 2011-12-30 | 2013-08-22 | BSH Bosch und Siemens Hausgeräte GmbH | Domestic refrigeration device having a cold storage compartment |
CN104024772A (en) * | 2011-12-30 | 2014-09-03 | Bsh博世和西门子家用电器有限公司 | Domestic Refrigeration Device Having A Cold Storage Compartment |
CN104024772B (en) * | 2011-12-30 | 2016-11-16 | Bsh家用电器有限公司 | There is the cold Domestic refrigerator depositing lattice |
US11402145B1 (en) | 2020-03-24 | 2022-08-02 | Sub-Zero Group, Inc. | Split air flow system |
Also Published As
Publication number | Publication date |
---|---|
DE3677124D1 (en) | 1991-02-28 |
EP0218560A3 (en) | 1988-05-11 |
DE218560T1 (en) | 1987-09-03 |
IT8548657A0 (en) | 1985-10-11 |
EP0218560B1 (en) | 1991-01-23 |
IT1182908B (en) | 1987-10-05 |
ES2002831A6 (en) | 1988-10-01 |
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