EP1151231B1 - Refrigerator provided with cooled air bypass passages - Google Patents
Refrigerator provided with cooled air bypass passages Download PDFInfo
- Publication number
- EP1151231B1 EP1151231B1 EP98959289A EP98959289A EP1151231B1 EP 1151231 B1 EP1151231 B1 EP 1151231B1 EP 98959289 A EP98959289 A EP 98959289A EP 98959289 A EP98959289 A EP 98959289A EP 1151231 B1 EP1151231 B1 EP 1151231B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooled air
- evaporator
- refrigerator
- fan
- refrigerating compartment
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
- F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
- F25D17/065—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators with compartments at different temperatures
-
- 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
- F25D2317/065—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 characterised by the air return
- F25D2317/0653—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 characterised by the air return through the 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
- 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
- F25D2317/067—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 characterised by air ducts
-
- 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
- F25D2317/068—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 characterised by the fans
- F25D2317/0682—Two or more fans
-
- 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 refrigerator; and, more particularly, to a refrigerator with air bypass passages which allow cooled air to circulate therein, even when some portions of an evaporator are covered with frost.
- a refrigerator is equipped with an evaporator for cooling air to be circulated therein. After a prolonged use, frost is bound to be formed on the evaporator.
- the refrigerator is conventionally provided with a defrosting mode. Whether to operate or not in the defrosting mode is determined by a power dissipated for driving a compressor and a variation of the temperature during the driving of the compressor.
- US-A-5,826,441 and EP-A-0 592 004 show a refrigerator having a freezer compartment with a fan, a refrigerating compartment with a fan, and an evaporator.
- the refrigerator comprises a first passage formed by one exterior wall of the evaporator and a panel for flowing cooled air from the refrigerating compartment to the fan of the refrigerating compartment. Further, a second passage is provided for flowing the cooled air from the freezer compartment to the fan of the freezer compartment.
- the above object of the present invention is accomplished by providing a refrigerator having a freezer compartment with a fan, a refrigerating compartment with a fan, and an evaporator, said refrigerator comprising a first bypass passage for flowing cooled air from the refrigerating compartment directly to the fan of the refrigerating compartment, thereby allowing the cooled air to bypass the evaporator; and a second bypass passage for flowing the cooled air from the freezer compartment directly to the fan of the freezer compartment, thereby allowing the cooled air to bypass the evaporator, the first bypass passage being formed by a panel, which is separated from the evaporator, and the rear wall of the refrigerator.
- FIG. 1 to 5 A refrigerator provided with a cooled air bypass passages according to the preferred embodiment of the present invention is disclosed in Figs. 1 to 5.
- the refrigerator 10 has a freezer compartment 18 on an upper portion thereof and a refrigerating compartment 34 on a lower portion thereof.
- the refrigerator 10 further has a door 12 having a grip 14 and a separating wall 41 at back of the freezer compartment 18 to thereby form a freezing space.
- the refrigerator 10 further has a rear wall 13 filled with urethane foams.
- an evaporator 20 is mounted in the rear portion of the freezer compartment 18.
- the evaporator 20 has a plurality of fins 22 thereon.
- On top of the evaporator 20 is formed a retaining space 28 for retaining a fan 32 for the refrigerating compartment 34.
- the fan 32 is mounted in the retaining space 28 and driven by a driving motor 30. The fan 32 blows cooled air in the retaining space 28 into the refrigerating compartment 34 through a duct 46.
- the cooled air sucked into the refrigerating compartment 34 is circulated therein.
- the cooled air circulated in the refrigerating compartment 34 returns to the retaining space 28 after passing through an outlet 25, a first returning area 26 and a horizontal area of a second returning area 44, then ascends to the rear portion of the evaporator 20.
- the cooled air passes through two passages, as it ascends to the rear portion of the evaporator 20.
- One of the passages is an evaporator contacting passage 35 formed between a perpendicular panel 42 and the evaporator 20 to allow the cooled air to ascend to the fins 22 of the evaporator 20.
- the other passage is a first bypass passage 36 formed by the perpendicular panel 42 and a rear wall 13 to allow the cooled air to be sucked directly into the retaining space 28.
- the cooled air sucked into the retaining space 28 enters the duct 46 by the action of the fan 32 through an inlet 52 of a cooled air inducing pipe 50.
- An inner wall 54 of the cooled air inducing pipe 50 formed on backside of the separating wall 41 serves to change the direction of the flow of the cooled air.
- the presence of the first bypass passage 36 allows the cooled air to circulate even if the evaporator contacting passage 35 gets blocked with the frost formed therein.
- a retaining space 29 for retaining the fan 33 for the freezer compartment 18 is formed on top of the evaporator 20.
- the fan 33 is mounted in the retaining space 29 and driven by a driving motor 31.
- the fan 33 blows the cooled air in the retaining space 29 into the freezer compartment 18 through an inlet 39 for the cooled air.
- the cooled air sucked into the freezer compartment 18 is circulated therein.
- the cooled air circulated in the freezer compartment 18 returns to the retaining space 29 after passing through the outlet 23, a horizontal returning area 24 and a second bypass passage 40, then ascends to the front portion of the evaporator 20.
- the second bypass passage 40 formed by the evaporator 20 and the separating wall 41 makes a large spare space to allow some of the cooled air to ascend therethrough to the retaining space 29 and contact the fins 22, with the rest bypassing the fins 22.
- the presence of the second bypass passage 40 allows the cooled air to circulate even if a large amount of frost is formed between the evaporator 20 and the separating wall 41.
- the first bypass passage 36 for bypassing the cooled air to a fan 32 for the refrigerating compartment 34 has a first side wall being tilted when viewed from the rear of the refrigerator 10 and a nearly perpendicular second side wall forming a passage for connecting a second returning area 44, the retaining space 28 and the inlet 52 of the cooled air inducing pipe 50. Further, it is preferable that the length of the inlet portion of the first bypass passage 36 connected to the second returning area 44 is about 2/3 of the lateral length of the evaporator 20.
- the bypass passages allow the cooled air to circulate inside the refrigerator until the defrosting mode is initiated to remove the frost filling the cooled air circulation passage and around the evaporator.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Defrosting Systems (AREA)
Description
The present invention relates to a refrigerator; and,
more particularly, to a refrigerator with air bypass passages
which allow cooled air to circulate therein, even when some
portions of an evaporator are covered with frost.
Generally a refrigerator is equipped with an evaporator
for cooling air to be circulated therein. After a prolonged
use, frost is bound to be formed on the evaporator.
If too much frost gets formed on the evaporator, the
cooling performance thereof gets deteriorated and the
circulation of the cooled air also gets hindered within the
refrigerator by the frost blocking the air passages.
To defrost the frost from the evaporator, the
refrigerator is conventionally provided with a defrosting
mode. Whether to operate or not in the defrosting mode is
determined by a power dissipated for driving a compressor and
a variation of the temperature during the driving of the
compressor.
However, in the conventional refrigerator, too much frost
is usually formed on the evaporator before the refrigerator
begins automatically to operate in the defrosting mode, first
resulting in blocking of the cooled air passages, resulting
in the performance of the refrigerator being deteriorated.
US-A-5,826,441 and EP-A-0 592 004 show a refrigerator having
a freezer compartment with a fan, a refrigerating compartment
with a fan, and an evaporator. The refrigerator comprises a
first passage formed by one exterior wall of the evaporator
and a panel for flowing cooled air from the refrigerating
compartment to the fan of the refrigerating compartment.
Further, a second passage is provided for flowing the cooled
air from the freezer compartment to the fan of the freezer
compartment. Some of the cooled air flowing through these
passages might not come into contact with the exterior walls
of the evaporator. However, there is still a risk that these
passages might be blocked by a large amount of frost formed
on the exterior walls of the evaporator.
It is, therefore, a primary object of the present invention
to provide a refrigerator with air bypass passages which
allow cooled air to circulate therein, even when some
portions of an evaporator are covered with frost.
The above object of the present invention is
accomplished by providing a refrigerator having a freezer
compartment with a fan, a refrigerating compartment with a
fan, and an evaporator, said refrigerator comprising a first
bypass passage for flowing cooled air from the refrigerating
compartment directly to the fan of the refrigerating
compartment, thereby allowing the cooled air to bypass the
evaporator; and a second bypass passage for flowing the
cooled air from the freezer compartment directly to the fan
of the freezer compartment, thereby allowing the cooled air
to bypass the evaporator, the first bypass passage being formed
by a panel, which is separated from the evaporator, and the
rear wall of the refrigerator.
The above and other objects and features of the instant
invention will become apparent from the following description
of preferred embodiment taken in conjunction with the
accompanying drawings, in which:
A refrigerator provided with a cooled air bypass passages
according to the preferred embodiment of the present invention
is disclosed in Figs. 1 to 5. As shown in Figs. 1 and 2, the
refrigerator 10 has a freezer compartment 18 on an upper
portion thereof and a refrigerating compartment 34 on a lower
portion thereof. The refrigerator 10 further has a door 12
having a grip 14 and a separating wall 41 at back of the
freezer compartment 18 to thereby form a freezing space. The
refrigerator 10 further has a rear wall 13 filled with
urethane foams.
As shown in Figs. 2 and 4, an evaporator 20 is mounted
in the rear portion of the freezer compartment 18. The
evaporator 20 has a plurality of fins 22 thereon. On top of
the evaporator 20 is formed a retaining space 28 for retaining
a fan 32 for the refrigerating compartment 34. The fan 32 is
mounted in the retaining space 28 and driven by a driving
motor 30. The fan 32 blows cooled air in the retaining space
28 into the refrigerating compartment 34 through a duct 46.
The cooled air sucked into the refrigerating compartment
34 is circulated therein. The cooled air circulated in the
refrigerating compartment 34 returns to the retaining space
28 after passing through an outlet 25, a first returning area
26 and a horizontal area of a second returning area 44, then
ascends to the rear portion of the evaporator 20.
The cooled air passes through two passages, as it
ascends to the rear portion of the evaporator 20. One of the
passages is an evaporator contacting passage 35 formed between
a perpendicular panel 42 and the evaporator 20 to allow the
cooled air to ascend to the fins 22 of the evaporator 20. The
other passage is a first bypass passage 36 formed by the
perpendicular panel 42 and a rear wall 13 to allow the cooled
air to be sucked directly into the retaining space 28. The
cooled air sucked into the retaining space 28 enters the duct
46 by the action of the fan 32 through an inlet 52 of a cooled
air inducing pipe 50. An inner wall 54 of the cooled air
inducing pipe 50 formed on backside of the separating wall 41
serves to change the direction of the flow of the cooled air.
The presence of the first bypass passage 36 allows the cooled
air to circulate even if the evaporator contacting passage 35
gets blocked with the frost formed therein.
As shown in Fig. 3 and 4, a retaining space 29 for
retaining the fan 33 for the freezer compartment 18 is formed
on top of the evaporator 20. The fan 33 is mounted in the
retaining space 29 and driven by a driving motor 31. The fan
33 blows the cooled air in the retaining space 29 into the
freezer compartment 18 through an inlet 39 for the cooled air.
The cooled air sucked into the freezer compartment 18 is
circulated therein. The cooled air circulated in the freezer
compartment 18 returns to the retaining space 29 after passing
through the outlet 23, a horizontal returning area 24 and a
second bypass passage 40, then ascends to the front portion
of the evaporator 20.
The second bypass passage 40 formed by the evaporator 20
and the separating wall 41 makes a large spare space to allow
some of the cooled air to ascend therethrough to the retaining
space 29 and contact the fins 22, with the rest bypassing the
fins 22. The presence of the second bypass passage 40 allows
the cooled air to circulate even if a large amount of frost
is formed between the evaporator 20 and the separating wall
41.
As shown in Fig. 5, the first bypass passage 36 for
bypassing the cooled air to a fan 32 for the refrigerating
compartment 34 has a first side wall being tilted when viewed
from the rear of the refrigerator 10 and a nearly
perpendicular second side wall forming a passage for
connecting a second returning area 44, the retaining space 28
and the inlet 52 of the cooled air inducing pipe 50. Further,
it is preferable that the length of the inlet portion of the
first bypass passage 36 connected to the second returning area
44 is about 2/3 of the lateral length of the evaporator 20.
According to the preferred embodiment of the present
invention, the bypass passages allow the cooled air to
circulate inside the refrigerator until the defrosting mode
is initiated to remove the frost filling the cooled air
circulation passage and around the evaporator.
Although the invention has been shown and described with
respect to the preferred embodiment, it will be understood by
those skilled in the art that various changes and
modifications may be made without departing from the
scope of the invention as defined in the following claims.
Claims (3)
- A refrigerator having a freezer compartment (18) with a fan (33), a refrigerating compartment (34) with a fan (32), and an evaporator (20), said refrigerator (10) comprising:characterized in thata first bypass passage (36) for flowing cooled air from the refrigerating compartment (34) directly to the fan (32) of the refrigerating compartment (34), thereby allowing the cooled air to bypass the evaporator (20); anda second bypass passage (40) for flowing the cooled air from the freezer compartment (18) directly to the fan (33) of the freezer compartment (18), thereby allowing the cooled air to bypass the evaporator (20);
the first bypass passage (36) is formed by a panel (42), which is separated from the evaporator (20), and the rear wall (13) of the refrigerator (10). - The refrigerator according to claim 1, wherein the length of an inlet portion of the first bypass passage (36) is about 2/3 of the length of the evaporator (20).
- The refrigerator according to claim 1, wherein the cooled air from the fan (32) of the refrigerating compartment (34) flows through a cooled air inducing pipe (50) mounted in front of the fan (32), changing its direction of flow to the refrigerating compartment (34).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/KR1998/000444 WO2000037869A1 (en) | 1998-12-18 | 1998-12-18 | Refrigerator provided with cooled air bypass passages |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1151231A1 EP1151231A1 (en) | 2001-11-07 |
| EP1151231B1 true EP1151231B1 (en) | 2004-09-15 |
Family
ID=19531215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98959289A Expired - Lifetime EP1151231B1 (en) | 1998-12-18 | 1998-12-18 | Refrigerator provided with cooled air bypass passages |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1151231B1 (en) |
| DE (1) | DE69826333T2 (en) |
| WO (1) | WO2000037869A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101231547B (en) * | 2008-02-21 | 2010-06-09 | 四川大学 | Split positioning air supply computer case |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111609606B (en) * | 2019-02-26 | 2022-04-29 | 青岛海尔电冰箱有限公司 | Refrigerator with dual air supply fans and air supply control method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR940009644A (en) * | 1992-10-09 | 1994-05-20 | 배순훈 | Refrigeration temperature control method and device |
| TW326488B (en) * | 1994-06-02 | 1998-02-11 | Samsung Electronics Co Ltd | Refrigerator |
| US5826441A (en) * | 1997-06-06 | 1998-10-27 | Daewoo Electronics Co., Ltd. | Refrigerator having a device for generating air curtains |
-
1998
- 1998-12-18 EP EP98959289A patent/EP1151231B1/en not_active Expired - Lifetime
- 1998-12-18 DE DE69826333T patent/DE69826333T2/en not_active Expired - Lifetime
- 1998-12-18 WO PCT/KR1998/000444 patent/WO2000037869A1/en active IP Right Grant
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101231547B (en) * | 2008-02-21 | 2010-06-09 | 四川大学 | Split positioning air supply computer case |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2000037869A1 (en) | 2000-06-29 |
| EP1151231A1 (en) | 2001-11-07 |
| DE69826333D1 (en) | 2004-10-21 |
| DE69826333T2 (en) | 2005-10-06 |
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