EP1828694A2 - A cooling device - Google Patents

A cooling device

Info

Publication number
EP1828694A2
EP1828694A2 EP05826525A EP05826525A EP1828694A2 EP 1828694 A2 EP1828694 A2 EP 1828694A2 EP 05826525 A EP05826525 A EP 05826525A EP 05826525 A EP05826525 A EP 05826525A EP 1828694 A2 EP1828694 A2 EP 1828694A2
Authority
EP
European Patent Office
Prior art keywords
cabinet
valve
flap valve
discharge pipe
cooling device
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
Application number
EP05826525A
Other languages
German (de)
French (fr)
Other versions
EP1828694B1 (en
Inventor
Alphan Arcelik Anonim Sirketi SAMDAN
Gorkem Arcelik Anonim Sirketi SUNER
Ahmet Arcelik Anonim Sirketi DINCER
Altan Arcelik Anonim Sirketi ALYANAK
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.)
Arcelik AS
Original Assignee
Arcelik AS
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 Arcelik AS filed Critical Arcelik AS
Publication of EP1828694A2 publication Critical patent/EP1828694A2/en
Application granted granted Critical
Publication of EP1828694B1 publication Critical patent/EP1828694B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/14—Collecting or removing condensed and defrost water; Drip trays
    • 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
    • F25D17/042—Air treating means within refrigerated spaces
    • F25D17/047—Pressure equalising devices
    • 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
    • F25D2321/00—Details or arrangements for defrosting; Preventing frosting; Removing condensed or defrost water, not provided for in other groups of this subclass
    • F25D2321/14—Collecting condense or defrost water; Removing condense or defrost water
    • F25D2321/146—Collecting condense or defrost water; Removing condense or defrost water characterised by the pipes or pipe connections

Definitions

  • the present invention relates to a cooling device comprising a
  • Cooling device of the current state-of-the-art comprises a cooling
  • the cooling cabinet is insulated from the outer surroundings in a leak-
  • compressor cabinet is positioned.
  • forced air circulation is made especially by a fan
  • cooling cabinet is the only exit passage of the cabinet to the atmosphere.
  • the discharge pipe being the only place that is open to the ambient
  • the discharge pipe is made in a "U" shape
  • a description is given of a refrigerator comprising a "U" shaped discharge pipe and a one way valve positioned above the maximum level of the
  • the object of the present invention is to design a cooling device
  • the cooling device designed to fulfill the objective of the present invention
  • Figure 1 - is the schematic view of a cooling device.
  • Figure 2 - is the schematic top view of a valve.
  • Figure 3 - is the schematic top view of a flap valve.
  • Figure 4 - is the schematic view of a valve when it is in closed position.
  • Figure 5 - is the schematic view of a valve when the cabinet interior
  • pressure is lower than atmospheric pressure.
  • Figure 6 - is the schematic view of a valve while the fluid collected in the
  • Figure 7 - is the schematic view of a valve comprising a stopper.
  • Figure 8 - is the schematic view of a valve in a closed position in an
  • Figure 9 - is the schematic view of a valve when the cabinet interior
  • Figure 10 - is the schematic view of a valve while the fluid collected in the
  • Figure 11 - is the schematic view of a valve comprising a stopper in an
  • Figure 12 - is the schematic view of a valve in closed position attached to
  • Figure 13 - is the schematic view of a valve attached to the discharge
  • Figure 14 - is the schematic view of a valve attached to the discharge
  • the cooling device (1) of the present invention comprises one or more
  • the valve (5) comprises, each moving independently in different
  • first flap valve (6) is mounted, moving to open in the opposite direction of
  • valve (5) comprises a hinge (100)
  • the first flap valve (6) opens, closes, and a hinge (101) providing the
  • the second flap valve (7) opens towards the atmosphere in the direction
  • the second flap valve (7) is formed in conformity with the structure of
  • the first flap valve (6) opens towards the interior of the cabinet (2) in the
  • Each of the first flap valve (6) and the second flap valve (7) can move
  • second flap valve (7) can be opened when the first flap valve (6) is closed
  • valve (5) is closed.
  • the valve (5) is closed. In the preferred embodiment of the present invention, the valve (5)
  • valve (5) preferably positioned on the end of the discharge pipe (4)
  • the second flap valve (7) actuates around its end
  • valve (5) is
  • valve (5) is produced of preferably rubber material and the first and
  • valve (5) is produced in one-piece, the opening, closing of the first and
  • defrosting is accomplished by utilizing the valve (5), the object of the

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)
  • Removal Of Water From Condensation And Defrosting (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

Preventing the flow of the ambient air into the cabinet (2) by closing the discharge pipe (4) under normal conditions, balancing the cabinet (2) interior pressure by opening into the cabinet (2) from the side of the ambient air when the cabinet (2) interior pressure drops and discharging the water in the cabinet (2) especially after defrosting, outside of the cabinet (2) is accomplished by utilizing the valve (5) which is the object of the present invention.

Description

A COOLING DEVICE
The present invention relates to a cooling device comprising a
valve which provides the balancing of the pressure imbalanced during
opening, closing of the door and discharging the water created especially
during the defrost process.
Cooling device of the current state-of-the-art comprises a cooling
cabinet and a door which is attached to the cooling cabinet, to be opened
or closed by the help of a hinge, providing access to the cooling cabinet.
The cooling cabinet is insulated from the outer surroundings in a leak-
proof manner when the door is closed. Frosting occurs around the
evaporator during the cooling process. This frost is melted by various
defrost methods, the melted water is discharged with the help of a drain
pipe, one end of which opens into the cooling cabinet and the other to the
outside of the cabinet, that is to the ambient atmosphere. The water
discharged to outside of the cabinet is transferred to a collector unit
situated preferably in the section of the cooling device where the
compressor cabinet is positioned. In cooling devices where forced air circulation is made especially by a fan,
when the door is opened/closed, the fan starts operating and draws the air
towards the evaporator, causing the pressure inside the cabinet to drop
results in a vacuum effect in the cabinet . An additional force needs to be
exerted to overcome this pressure difference between the inside and the
outside of the cooling cabinet when the door of the cooling cabinet is
desired to be opened again.
Furthermore the discharge pipe discharging the water collected in the
cooling cabinet is the only exit passage of the cabinet to the atmosphere.
As a vacuum is formed inside the cabinet due to the opening and closing
of the door or other causes, air is sucked into the cabinet from the end of
the discharge pipe opening to the ambient atmosphere. If the amount of
water in the discharge pipe or in the collecting unit where the end of the
discharge pipe opens is more than enough, water and air is sucked into
the cabinet until the cabinet pressure is in equilibrium with the
atmospheric pressure. During this involuntary process, the noise
generated by the air and water mixture flowing through the discharge pipe
can reach a level that is annoying to the user. The discharge pipe being the only place that is open to the ambient
atmosphere while the door of the cabinet is closed, will also result in
temperature and pressure abnormalities in the cooling cabinet, in addition
to all the above explained adversities.
In the current state of the art, the discharge pipe is made in a "U" shape
so that some amount of water stays in the pipe - especially water from the
defrost process - preventing the air which is comparably warmer than the
cooling cabinet medium to flow into the cooling cabinet from the end of the
discharge pipe that is open to atmospheric pressure, disrupting the
temperature and pressure balance of the cabinet. However the entrapping
of water in the "U" shaped discharge pipe prevents the flow of air into and
out of the cabinet. Since the flow of air from the ambient atmosphere into
the cabinet to eradicate the pressure imbalance is blocked by the water
entrapped in the discharge pipe, as a result the pressure imbalance in the
cabinet can not be adjusted and opening the cooling device door requires
the exertion of a larger force.
In the current state of the art, in the United States Patent no. US5499514,
a description is given of a refrigerator comprising a "U" shaped discharge pipe and a one way valve positioned above the maximum level of the
trapped water, wherein the valve allows the flow from the atmosphere to
the inside of the food storage compartment. While an air inflow from the
end of the discharge pipe open to the atmosphere towards the end
opening into the compartment is prevented by the water accumulated in
the "U" shaped pipe, the imbalance of pressure created by the opening,
closing of the refrigerator door is also prevented by the valve on the side
surface of the discharge pipe opening into the compartment which stays
open until the compartment pressure is in equilibrium with the atmospheric
pressure. Furthermore, the noise generated during the flow of the above
explained air-water mixture through the discharge pipe is also prevented
by this valve.
Another embodiment of the current state of the art is described in the
United States Patent no. US5557942. In this embodiment, a chamber
where some amount of water is collected and a by-pass air passage
between the water drain conduit and said chamber is described. In an
alternative embodiment of this patent document the description is given
for a movable closure device that rises or falls, acting as a float, in response to the level of trapped water inside the chamber to close the said air passage opening to the ambient air. The object of the present invention is to design a cooling device
comprising a valve which prevents the temperature and pressure
abnormalities inside the cooling cabinet and also provides the discharging
of especially the defrost water.
The cooling device designed to fulfill the objective of the present invention
is shown in the attached figures where:
Figure 1 - is the schematic view of a cooling device.
Figure 2 - is the schematic top view of a valve.
Figure 3 - is the schematic top view of a flap valve.
Figure 4 - is the schematic view of a valve when it is in closed position.
Figure 5 - is the schematic view of a valve when the cabinet interior
pressure is lower than atmospheric pressure.
Figure 6 - is the schematic view of a valve while the fluid collected in the
cabinet is discharged.
Figure 7 - is the schematic view of a valve comprising a stopper.
Figure 8 - is the schematic view of a valve in a closed position in an
alternative embodiment of the present invention. Figure 9 - is the schematic view of a valve when the cabinet interior
pressure is lower than atmospheric pressure in an alternative embodiment
of the present invention.
Figure 10 - is the schematic view of a valve while the fluid collected in the
cabinet is discharged in an alternative embodiment of the present
invention.
Figure 11 - is the schematic view of a valve comprising a stopper in an
alternative embodiment of the present invention.
Figure 12 - is the schematic view of a valve in closed position attached to
the discharge pipe by snap-fitting method.
Figure 13 - is the schematic view of a valve attached to the discharge
pipe by snap-fitting method when the cabinet interior pressure is lower
than atmospheric pressure.
Figure 14 - is the schematic view of a valve attached to the discharge
pipe by snap-fitting method while the fluid collected in the cabinet is being
discharged.
Elements shown in figures are numbered as follows:
1. Cooling device
2. Cooling cabinet 3. Door
4. Discharge pipe
5. Valve
6. First flap valve
7. Second flap valve
8. Opening
9. Stopper
100., 101. Hinge
The cooling device (1) of the present invention comprises one or more
cooling cabinets (2) where items to be cooled are stored, a door (3)
serving to close the cooling cabinet (2) and allowing the user to access
the items stored inside the cooling cabinet (2), a discharge pipe (4) one
end of which opens into the cooling cabinet (2) and the other end outside
the cooling cabinet (2), a valve (5) positioned inside and/or over the
dischargepipe (4) , opening and/or closing the discharge pipe (4), allowing
the flow of the ambient air into the cooling cabinet (2) thereby balancing
the cabinet (2) interior pressure and at the same time providing the
discharge of fluid collected in the cabinet (2), water resulting from defrost
process for example, outside of the cabinet (2) (Figure 1). The valve (5) comprises, each moving independently in different
directions, a first flap valve (6) opening and/or closing the discharge pipe
(4), allowing the flow of the ambient air into the cabinet (2) via the
discharge pipe (4) when opened, and a second flap valve (7) on which the
first flap valve (6) is mounted, moving to open in the opposite direction of
the opening direction of the first flap valve (6), providing the discharge of
the fluid in the cabinet (2) out of the cabinet (2) via the discharge pipe (4)
(Figure 4, Figure 8 and Figure 12).
In the preferred embodiment of the present invention, a first and a
second flap valve (6 and 7), one inserted into the other, is utilized in the
valve (5). In this embodiment, the valve (5) comprises a hinge (100)
providing the attachment of the second flap valve (7) on the inner wall of
the discharge pipe (4), an opening (8) on the second flap valve (7) which
the first flap valve (6) opens, closes, and a hinge (101) providing the
attachment of the first flap valve (6) on the second flap valve (7) (Figure 2,
Figure 3, Figure 4, Figure 5 and Figure 6).
The hinges (100 and 101) which movably attach the second flap valve (7)
to the wall of the discharge pipe (4) to be opened or closed, and movably attach the first flap valve (6) on the second flap valve (7) to be opened or
closed, allows the first and second flap valves (6 and 7) to be opened or
closed with a minimum amount of force exerted on them.
The second flap valve (7) opens towards the atmosphere in the direction
of the gravitational force as a result of the weight of the water collected on
it. The second flap valve (7) is formed in conformity with the structure of
the discharge pipe (4) (Figure 6, Figure 10 and Figure 14).
The first flap valve (6) opens towards the interior of the cabinet (2) in the
direction of the air flow formed from high pressure side to low pressure
when the cabinet (2) interior pressure is lower than atmospheric pressure
(Figure 5, Figure 9 and Figure 13).
Each of the first flap valve (6) and the second flap valve (7) can move
independently. In the preferred embodiment of the present invention, the
second flap valve (7) can be opened when the first flap valve (6) is closed,
and the first flap valve (6) can be opened when the second flap valve (7)
is closed. In the preferred embodiment of the present invention, the valve (5)
comprises a stopper (9) situated on the inner wall of the dischargepipe (4)
preventing the second flap valve (7) mounted on the inner wall of the
discharge pipe (4) to move in a direction from the atmosphere towards the
inside of the cabinet (2) (Figure 7 and Figure 11). The stopper (9) avoids
the second flap valve (7) from opening in the other direction, that is,
towards the inside of the cabinet (2).
The valve (5), preferably positioned on the end of the discharge pipe (4)
that opens to the atmosphere, prevents the flow of the air into the cabinet
(2) from the open end of the discharge pipe (4) by closing the discharge
pipe (4) entirely since it is in a closed position under normal conditions,
i.e., when the cabinet (2) interior pressure is in equilibrium and when there
is no fluid flowing in the discharge pipe (4) from the cabinet (2), when both
of the first flap valve (6) and the second flap valve (7) are closed. Thus the
unbalancing of the cabinet (2) interior temperature and the cabinet (2)
interior pressure by the inflow of ambient air which is warmer than the
cabinet (2) interior is prevented (Figure 4, Figure 8 and Figure 12). The first flap valve (6) which is situated in the valve (5) that is normally in a
closed position, opens without resisting to the inflow of atmospheric air
that is higher in pressure compared to the cabinet (2) interior pressure and
allows the inflow of air into the cabinet (2) when the cabinet (2) interior
pressure drops below the atmospheric pressure due to the opening,
closing of the cooling device (1) door (3) or for any other reason. The air
flows in through the end of the discharge pipe (4) opening to the ambient
air into the discharge pipe (4), flowing through the gap opened by the first
flap valve (6) and reaches inside the cabinet (2) from the end of the
discharge pipe (4) extending into the cabinet (2) in this case. This inflow of
air goes on until the cabinet (2) interior pressure reaches the level of the
atmospheric pressure, the first flap valve (6) closes the discharge pipe (4)
and disallows more air inflow into the cabinet (2) when the pressure
exerted on the first flap valve (6) is lifted because the inflow of air stops
when the cabinet (2) interior pressure is equalized with the atmospheric
pressure (Figure 5, Figure 9 and Figure 13).
When there is any fluid that must be discharged from the cabinet (2) for
various reasons , - water after defrost process, for example - this fluid is
transferred to the discharge pipe (4) to be discharged out of the cabinet (2). The fluid reaching the discharge pipe (4) flows through the discharge
pipe (4) and collects over the valve (5) which is in a closed position under
normal conditions. The second flap valve (7) actuates around its end
attached to the valve (5) and opens to discharge the fluid out of the
cabinet (2) through the discharge pipe (4) when the amount of the
accumulated fluid on the second flap valve (7) and the first flap valve (6)
situated on the valve (5) increases (Figure 6, Figure 10 and Figure 14).
In an alternative embodiment of the present invention, the valve (5) is
attached to the end of the discharge pipe (4) by snap-fitting method. The
valve (5) is produced of preferably rubber material and the first and
second flap valves (6 and 7) open, close owing to the elastic feature of the
material only, without the need to use any hinges. In this embodiment the
valve (5) is produced in one-piece, the opening, closing of the first and
second flap valves (6 and 7) is accomplished by changing the thickness of
the material on the sections of the valve (5) and the discharge pipe (4)
where the first and second flap valves (6 and 7) will be attached, whereby
these sections with changed material thickness act as hinges (Figure 12,
Figure 13 and Figure 14). Preventing the inflow of ambient air into the cabinet (2) by closing the
discharge pipe (4) under normal conditions, balancing the cabinet (2)
interior pressure by opening into the cabinet (2) from the side of the
ambient air when the cabinet (2) interior pressure drops and discharging
the water in the cabinet (2) outside of the cabinet (2) especially after
defrosting is accomplished by utilizing the valve (5), the object of the
present invention.

Claims

1. A cooling device (1) comprising one or more cooling cabinets (2)
where items to be cooled are stored, a door (3) serving to close the
cooling cabinet (2) and allowing the user to access the items stored
inside the cooling cabinet (2), a discharge pipe (4) one end of which
extends into the cooling cabinet (2) and the other end outside the
cooling cabinet (2), and characterized by a valve (5), having a first flap
valve (6) opening into the discharge pipe (4), allowing the inflow of
ambient air into the cabinet (2) and a second flap valve (7) on which
the first flap valve (6) is mounted, moving in the opposite direction of
the opening direction of the first flap valve (6), providing the discharge
of fluid in the cabinet (2) out of the cabinet (2), opening and/or closing
the discharge pipe (4), allowing the flow of the ambient air into the
cooling cabinet (2) thereby balancing the cabinet (2) interior pressure
and providing the discharge of fluid collected in the cabinet (2) outside
of the cabinet (2).
2. A cooling device (1) as in Claim 1 , characterized by a valve (5)
comprising a first flap valve (6) and a second flap valve (7), one
inserted into the other.
3. A cooling device (1) as in Claim 2, characterized by a valve (5)
comprising a second flap valve (7) mounted on the inner wall of the
discharge pipe (4) by a hinge (100).
4. A cooling device (1) as in Claim 2 or 3, characterized by a valve (5)
comprising a second flap valve (7) having an opening (8) on it.
5. A cooling device (1) as in Claim 4, characterized by a valve (5)
comprising a first flap valve (6) mounted on the second flap valve (7)
by a hinge (101), opening or closing the opening (8) on the second flap
valve (7) by moving independently from the second flap valve (7).
6. A cooling device (1) as in any one of the above claims, characterized
by a valve (5) comprising a second flap valve (7) which opens to the
atmosphere as a result of the weight of the water collected over it.
7. A cooling device (1) as in any one of the above claims, characterized
by a valve (5) comprising a first flap valve (6) which opens towards the
interior of the cabinet (2) in the direction of the air inflow formed from
the high pressure side to the low pressure side, when the cabinet (2)
interior pressure is lower than the atmospheric pressure.
8. A cooling device (1) as in any one of the above claims, characterized
by a valve (5) comprising a stopper (9) on the inner wall of the
discharge pipe (4), which prevents the second flap valve (7) mounted
on the inner wall of the discharge pipe (4) moving in a direction from
the atmosphere towards the inside of the cabinet (2).
9. A cooling device (1) as in any Claim 1 , characterized by a valve (5)
attached on the discharge pipe (4) by snap-fitting method.
10. A cooling device (1) as in Claim 9, characterized by a valve (5)
produced as a single-piece.
11. A cooling device (1) as in Claim 9 or 10, characterized by a valve (5)
in which the opening, closing of the first and second flap valves (6 and 7) is accomplished by changing the thickness of the material on the
sections where the first and second flap valves (6 and 7) are attached,
whereby these sections with changed material thickness act as hinges.
EP05826525A 2004-12-24 2005-12-24 A cooling device Not-in-force EP1828694B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200403614 2004-12-24
PCT/IB2005/054398 WO2006067767A2 (en) 2004-12-24 2005-12-24 A cooling device

Publications (2)

Publication Number Publication Date
EP1828694A2 true EP1828694A2 (en) 2007-09-05
EP1828694B1 EP1828694B1 (en) 2010-04-28

Family

ID=36577525

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05826525A Not-in-force EP1828694B1 (en) 2004-12-24 2005-12-24 A cooling device

Country Status (7)

Country Link
US (1) US20100269531A1 (en)
EP (1) EP1828694B1 (en)
CN (1) CN100538230C (en)
AT (1) ATE466243T1 (en)
DE (1) DE602005020974D1 (en)
ES (1) ES2342782T3 (en)
WO (1) WO2006067767A2 (en)

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Also Published As

Publication number Publication date
ATE466243T1 (en) 2010-05-15
WO2006067767A2 (en) 2006-06-29
ES2342782T3 (en) 2010-07-14
WO2006067767A3 (en) 2006-09-14
EP1828694B1 (en) 2010-04-28
CN100538230C (en) 2009-09-09
DE602005020974D1 (en) 2010-06-10
US20100269531A1 (en) 2010-10-28
CN101091094A (en) 2007-12-19

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