EP3956616A1 - A cooling appliance having improved vacuum removal system - Google Patents

A cooling appliance having improved vacuum removal system

Info

Publication number
EP3956616A1
EP3956616A1 EP20713602.9A EP20713602A EP3956616A1 EP 3956616 A1 EP3956616 A1 EP 3956616A1 EP 20713602 A EP20713602 A EP 20713602A EP 3956616 A1 EP3956616 A1 EP 3956616A1
Authority
EP
European Patent Office
Prior art keywords
compartment
cooling appliance
door
piston
air
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
EP20713602.9A
Other languages
German (de)
French (fr)
Other versions
EP3956616B1 (en
Inventor
Semih Erol
Resul Yavuz
Ercan Akyuz
Ibrahim Yilmaz Evren
Mehmet YASAR
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 EP3956616A1 publication Critical patent/EP3956616A1/en
Application granted granted Critical
Publication of EP3956616B1 publication Critical patent/EP3956616B1/en
Active 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
    • 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

Definitions

  • the present invention relates to a cooling appliance, in particular to a cooling appliance having improved vacuum removal system.
  • the cooling appliances are provided with a body and a door hinged to the body in a pivotable manner, providing access to he inner volume of the cooling appliances.
  • the cooling appliances When the door is closed, the cooling appliances is insulated from the exterior environment in a leak proof way. As the door is opened, the air temperature inside the cooling appliance increases. The longer the door remains open, the higher the temperature of the air inside the cooling appliance will be.
  • the compressor starts to pump refrigerant to the evaporator, the temperature of the evaporator drops.
  • a fan is provided in close vicinity of the evaporator forcing air to circulate by passing through the evaporator and entering the inner volume of the cooling appliance. As a result of this, the temperature inside the cooling appliance starts to drop.
  • the cooling appliance Since the cooling appliance is almost leak proof, the pressure of the air inside the cooling appliance falls. The air pressure of the ambient remains the same, whereas the pressure inside the cooling appliance falls causing a vacuum to form which makes it harder to open the door of the cooling appliance.
  • the cooling appliances are provided with conduits communicating the inner volume of the cooling appliances’ with the ambient air.
  • a problem with the state of the art is that the intake of ambient air causes the temperature inside the cooling appliance increase, therefore increasing energy consumption of the cooling appliance.
  • a prior art publication in the technical field of the present invention may be referred to as CN107270616A among others, the document disclosing a cooling appliance having an air conduit connecting the interior volume of the cooling appliance with the ambient air.
  • the method realized to achieve the aim of the present invention and disclosed in the first claim and the dependent claims comprises a cooling appliance, wherein the cooling appliance comprises a body and a door pivotable hinged to the body.
  • the door has two positions. The first position being open, and the second position being closed. In open position, the user has access to an inner volume of the cooling appliance. In the closed position, the user is obstructed to reach the inner volume of the cooling appliance. After closing the door, the warm air inside the cooling appliance cools down, causing a drop in air pressure.
  • the door comprises a compartment and the compartment is connected to the inner volume of the cooling appliance via a conduit that allows passage of air between the compartment and the inner volume of the cooling appliance.
  • the compartment is otherwise hermetically sealed from the outer environment.
  • the compartment is embedded inside the insulation material filling the door.
  • a piston is placed inside the compartment and hermetically divides the compartment.
  • a biasing means is placed between the piston and the conduit and the biasing means biases the piston to its initial condition. As the door is closed and the pressure drops, the piston slides inside the compartment, helping to equalize the pressure between the ambient pressure and the air pressure inside the cooling appliance. By this means, the vacuum is overcome without allowing any warm ambient air to enter inside the inner volume of the cooling appliance.
  • a shaft is placed inside the compartment and is configured to hermetically pass through the piston via a first end.
  • the biasing means is attached onto the first end and extends between the first end of the shaft and the conduit.
  • the shaft helps guide the movement of the piston and additionally it forms the first end via which the biasing means is robustly attached onto the shaft.
  • the compartment is divided into two smaller volumes via a partitioning wall.
  • the partitioning wall comprises a channel into which the shaft is slidable inserted via a second end, the second being at the opposite side to the first end on the shaft.
  • the door comprises an air reservoir.
  • the air reservoir is connected to the compartment and air is free to pass between the air reservoir and the compartment.
  • the shaft passes by the air duct connecting the air reservoir and the compartment.
  • the air reservoir gets connected with the inner volume of the cooling appliance via the compartment and the conduit respectively.
  • the additional air stored inside the air reservoir helps to equalize the pressure between the inner volume of the cooling appliance and the conduit.
  • the air reservoir is accommodated on the door closer to the inner volume of the cooling appliance in closed position of the door. Therefore, the temperature of the air inside the air reservoir is kept at a low temperature meanwhile having a pressure almost equal to the atmospheric pressure.
  • an opening is provided on the door facing away from the cooling appliance in closed position of the door.
  • An indicator is placed inside the compartment and is coupled to move together with the shaft. As the shaft moves along the compartment a part of the indicator becomes visible depending on the pressure difference between the inner volume of the cooling appliance and the compartment. The indicator is visible through the opening and notifies the user of the pressure difference between the inner volume of the cooling appliance and the compartment. By this means, the user is informed and prevented to open the door should there a be high pressure difference. As the pressure between the inner volume of the cooling appliance and the compartment equalizes the indicator indicates a different value, informing the user that the vacuum is almost zeroized and that it is easier to open the door. Therefore, the user is prevented to use excessive force to open the door.
  • the indicator is color coded.
  • the indicator is colored to gradually change between red and green, red indicates that the pressure is yet to be equalized whereas green color indicates that the pressure is equalized.
  • the biasing means is a spring.
  • the vacuum created occurring due to the drop of temperature trapped inside the cooling appliance is prevented by the compartment without the need to intake any hot ambient air inside the cooling appliance.
  • Figure 1 – is a front view of the cooling appliance.
  • Figure 2 – is a sectional view of the dashed line A-A in Figure 1.
  • Figure 3 – is an enlarged view of the dashed line B-B in Figure 2, the shaft positioned towards the right.
  • Figure 4 – is an enlarged view of the dashed line B-B in Figure 2, the shaft positioned towards the left.
  • the present invention relates to a cooling appliance (1) comprising; a body (2), a door (3) that is pivotable attached onto the body (2) between a closed position and an open position wherein the door (3) prevents access inside the body (2) in the closed position.
  • the present invention relates to a cooling appliance (1) comprising the door (3) wherein the door (3) comprises a hermetically sealed compartment (4), and a conduit (5) opening to the compartment (4) from one end and facing the inner volume of the cooling appliance (1) in the closed position of the door (3) from the other end to transfer air in between, a piston (6) slidably placed inside the compartment (4) wherein the piston (6) hermetically divides the compartment (4), and a biasing means (7) placed between the piston (6) and the conduit (5).
  • the compartment (4) is hermetically sealed from the outer environment except for the conduit (5) connecting the compartment (4) to the inner volume of the cooling appliance (1).
  • the conduit (5) is in the form of a tube and is suitable for transferring air between the compartment (4) and the inner volume of the cooling appliance (1).
  • the shape of the compartment (4) is a hollow cylinder or a rectangular prism.
  • the piston (6) is configured to match the shape of the internal clearance of the compartment (4), is placed inside compartment (4) and is free to slide along the compartment (4).
  • the piston (6) faces the conduit (5) where it opens to the compartment (4).
  • the piston (6) moves towards the intake of the conduit (5) equalizing the pressure of the air inside the cooling appliance (1).
  • the air trapped inside the compartment (4) is used to equalize the pressure inside the inner volume of the cooling appliance (1).
  • a biasing means (7) is placed in-between the piston (6) and the conduit (5).
  • the biasing means (7) biases the piston (6) away from the conduit (5).
  • the air pressure inside the compartment (4) will be lower than the atmospheric pressure. In such case, the piston (6) will move away from the conduit (5). This time the biasing means (7) will bias the piston (6) towards the conduit (5).
  • the piston (6) is restored to its initial condition.
  • the conduit (5) and the piston (6) the vacuum is eliminated without allowing the ambient air to enter inside the cooling appliance (1).
  • the energy efficiency of the cooling appliance (1) is improved.
  • a shaft (8) passes through the piston (6) via a first end (9) and onto which the biasing means (7) is placed.
  • the shaft (8) extends partly along the length of the compartment (4) and hermetically passes through the piston (6).
  • the first end (9) of the shaft (8) protrudes from the piston (6) and the biasing means (7) is coupled with the first end (9) forming a robust structure.
  • the compartment (4) comprises a partitioning wall (10) dividing the compartment (4) into two smaller volumes.
  • the compartment (4) comprises a partitioning wall (10).
  • the partitioning wall (10) divides the compartment (4) into two smaller sub volumes.
  • the partitioning wall (10) comprises a channel (11) into which the shaft (8) is slidably inserted via a second end (12).
  • the partitioning wall (10) comprises a channel (10), preferably in the form of a circular hole, into which the shaft (8) is slidable inserted via the second end (12) of the shaft (8). Therefore, the shaft (8) is robustly guided inside the compartment (4) during the movement of the shaft (8) resulting from the pressure drop inside the cooling appliance (1).
  • the door (3) comprises an air reservoir (13) connected to the compartment (4) in-between the partitioning wall (10) and the conduit (5).
  • the compartment (4) is in gas connection with the at least one air reservoir (13) accommodated inside the door (3).
  • the air reservoir (13) is connected to the compartment (4) via an air duct.
  • the air pressure inside the air reservoir (13) is almost equal to atmospheric pressure and is greater than the pressure of the air inside the cooling appliance (1). Therefore, the air trapped inside the air reservoir (13) is used to equalize the pressure inside the cooling appliance (1). It is to be understood that multiple air reservoirs (13) may be utilized to equalize the pressure inside the cooling appliance (1).
  • an opening (14) is accommodated onto the door (3) and adjacent to the compartment (4) and by an indicator (15) connected to the shaft (8) via the second end (12), wherein the indicator (15) indicates the position of the shaft (8).
  • the opening (14) is provided on the door (2) and allows the user to see the indicator (15) provided inside the compartment (4).
  • the partitioning walls (10) forms two sub volumes. The first sub volume being in direct communication with the conduit (5) and housing the piston (6) and most of the shaft (8). The second sub volume being in communication with the first sub volume and housing the indicator (15) and a part of the shaft (8).
  • the indicator (15) is located inside the second sub volume created by the partitioning wall (10). The indicator (15) slides along the said second sub volume and is partly visible through the opening (14). The user is therefore notified of the vacuum inside the inner volume of the cooling appliance (1). As a result, the user does not unknowingly force the door (3) to open which may require excessive force and wait for the pressure inside the cooling appliance (1) to equalize.
  • the indicator (15) is color coded.
  • the indicator (15) is colored and iys color vary along its length.
  • the color of the indicator (15) between red and green, the red indicating a pressure difference between the air pressure inside cooling appliance (1) and the air pressure of the outer environment.
  • the biasing means (7) is a spring.
  • the springs are easily producible and long lasting, increasing vacuum removal efficiency.
  • the vacuum occuring after closing the door (3) is eliminated by the compartment (4), piston (6) and the air reservoir (13) without taking in relatively hot air present in the ambient atmosphere helping increase energy efficiency of the cooling appliance (1).

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)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

The present invention relates to a cooling appliance (1) comprising; a body (2), a door (3) that is pivotable attached onto the body (2) between a closed position and an open position wherein the door (3) prevents access inside the body (2) in the closed position.

Description

    A COOLING APPLIANCE HAVING IMPROVED VACUUM REMOVAL SYSTEM
  • The present invention relates to a cooling appliance, in particular to a cooling appliance having improved vacuum removal system.
  • In the state of the art, the cooling appliances are provided with a body and a door hinged to the body in a pivotable manner, providing access to he inner volume of the cooling appliances. When the door is closed, the cooling appliances is insulated from the exterior environment in a leak proof way. As the door is opened, the air temperature inside the cooling appliance increases. The longer the door remains open, the higher the temperature of the air inside the cooling appliance will be. After the door is closed, the compressor starts to pump refrigerant to the evaporator, the temperature of the evaporator drops. A fan is provided in close vicinity of the evaporator forcing air to circulate by passing through the evaporator and entering the inner volume of the cooling appliance. As a result of this, the temperature inside the cooling appliance starts to drop. Since the cooling appliance is almost leak proof, the pressure of the air inside the cooling appliance falls. The air pressure of the ambient remains the same, whereas the pressure inside the cooling appliance falls causing a vacuum to form which makes it harder to open the door of the cooling appliance. In the state of the art, the cooling appliances are provided with conduits communicating the inner volume of the cooling appliances’ with the ambient air. A problem with the state of the art is that the intake of ambient air causes the temperature inside the cooling appliance increase, therefore increasing energy consumption of the cooling appliance.
  • A prior art publication in the technical field of the present invention may be referred to as CN107270616A among others, the document disclosing a cooling appliance having an air conduit connecting the interior volume of the cooling appliance with the ambient air.
  • It is an object of the present invention to provide a cooling appliance with vacuum zeroing properties without allowing the ambient air to enter inside the cooling appliance.
  • The method realized to achieve the aim of the present invention and disclosed in the first claim and the dependent claims comprises a cooling appliance, wherein the cooling appliance comprises a body and a door pivotable hinged to the body. The door has two positions. The first position being open, and the second position being closed. In open position, the user has access to an inner volume of the cooling appliance. In the closed position, the user is obstructed to reach the inner volume of the cooling appliance. After closing the door, the warm air inside the cooling appliance cools down, causing a drop in air pressure. The door comprises a compartment and the compartment is connected to the inner volume of the cooling appliance via a conduit that allows passage of air between the compartment and the inner volume of the cooling appliance. The compartment is otherwise hermetically sealed from the outer environment. The compartment is embedded inside the insulation material filling the door. A piston is placed inside the compartment and hermetically divides the compartment. A biasing means is placed between the piston and the conduit and the biasing means biases the piston to its initial condition. As the door is closed and the pressure drops, the piston slides inside the compartment, helping to equalize the pressure between the ambient pressure and the air pressure inside the cooling appliance. By this means, the vacuum is overcome without allowing any warm ambient air to enter inside the inner volume of the cooling appliance.
  • In an embodiment of the invention, a shaft is placed inside the compartment and is configured to hermetically pass through the piston via a first end. The biasing means is attached onto the first end and extends between the first end of the shaft and the conduit. The shaft helps guide the movement of the piston and additionally it forms the first end via which the biasing means is robustly attached onto the shaft.
  • In an embodiment of the invention, the compartment is divided into two smaller volumes via a partitioning wall.
  • In an embodiment of the invention, the partitioning wall comprises a channel into which the shaft is slidable inserted via a second end, the second being at the opposite side to the first end on the shaft. By means of the partitioning wall and the channel, the shaft is robustly and slidable placed inside the compartment.
  • In an embodiment of the invention, the door comprises an air reservoir. The air reservoir is connected to the compartment and air is free to pass between the air reservoir and the compartment. As the piston slides along the compartment to equalize the pressure, the shaft passes by the air duct connecting the air reservoir and the compartment. As the piston slides, the air reservoir gets connected with the inner volume of the cooling appliance via the compartment and the conduit respectively. The additional air stored inside the air reservoir helps to equalize the pressure between the inner volume of the cooling appliance and the conduit. The air reservoir is accommodated on the door closer to the inner volume of the cooling appliance in closed position of the door. Therefore, the temperature of the air inside the air reservoir is kept at a low temperature meanwhile having a pressure almost equal to the atmospheric pressure.
  • In an embodiment of the invention, an opening is provided on the door facing away from the cooling appliance in closed position of the door. An indicator is placed inside the compartment and is coupled to move together with the shaft. As the shaft moves along the compartment a part of the indicator becomes visible depending on the pressure difference between the inner volume of the cooling appliance and the compartment. The indicator is visible through the opening and notifies the user of the pressure difference between the inner volume of the cooling appliance and the compartment. By this means, the user is informed and prevented to open the door should there a be high pressure difference. As the pressure between the inner volume of the cooling appliance and the compartment equalizes the indicator indicates a different value, informing the user that the vacuum is almost zeroized and that it is easier to open the door. Therefore, the user is prevented to use excessive force to open the door.
  • In an embodiment of the invention, the indicator is color coded. The indicator is colored to gradually change between red and green, red indicates that the pressure is yet to be equalized whereas green color indicates that the pressure is equalized.
  • In an embodiment of the invention, the biasing means is a spring.
  • By means of the present invention, the vacuum created occurring due to the drop of temperature trapped inside the cooling appliance is prevented by the compartment without the need to intake any hot ambient air inside the cooling appliance.
  • The drawings are not meant to delimit the scope of protection as identified in the claims nor should they be referred to alone in an effort to interpret the scope identified in the claims without recourse to the technical disclosure in the description of the present invention.
  • Figure 1 – is a front view of the cooling appliance.
  • Figure 2 – is a sectional view of the dashed line A-A in Figure 1.
  • Figure 3 – is an enlarged view of the dashed line B-B in Figure 2, the shaft positioned towards the right.
  • Figure 4 – is an enlarged view of the dashed line B-B in Figure 2, the shaft positioned towards the left.
  • The following numerals are assigned to different parts demonstrated in the drawings and referred to in the present detailed description of the invention:
    1. Cooling Appliance
    2. Body
    3. Door
    4. Compartment
    5. Conduit
    6. Piston
    7. Biasing means
    8. Shaft
    9. First end
    10. Partitioning wall
    11. Channel
    12. Second end
    13. Air reservoir
    14. Opening
    15. Indicator
  • The present invention relates to a cooling appliance (1) comprising; a body (2), a door (3) that is pivotable attached onto the body (2) between a closed position and an open position wherein the door (3) prevents access inside the body (2) in the closed position.
  • The present invention relates to a cooling appliance (1) comprising the door (3) wherein the door (3) comprises a hermetically sealed compartment (4), and a conduit (5) opening to the compartment (4) from one end and facing the inner volume of the cooling appliance (1) in the closed position of the door (3) from the other end to transfer air in between, a piston (6) slidably placed inside the compartment (4) wherein the piston (6) hermetically divides the compartment (4), and a biasing means (7) placed between the piston (6) and the conduit (5). The compartment (4) is hermetically sealed from the outer environment except for the conduit (5) connecting the compartment (4) to the inner volume of the cooling appliance (1). The conduit (5) is in the form of a tube and is suitable for transferring air between the compartment (4) and the inner volume of the cooling appliance (1). The shape of the compartment (4) is a hollow cylinder or a rectangular prism. The piston (6) is configured to match the shape of the internal clearance of the compartment (4), is placed inside compartment (4) and is free to slide along the compartment (4). The piston (6) faces the conduit (5) where it opens to the compartment (4). As the door (3) is closed, the air remaining inside the inner volume cools down, resulting in a decrease of the air pressure inside the inner volume of the cooling appliance (1). As a result, the piston (6) moves towards the intake of the conduit (5) equalizing the pressure of the air inside the cooling appliance (1). The air trapped inside the compartment (4) is used to equalize the pressure inside the inner volume of the cooling appliance (1). As a result, the user may easily open the door (3) and access inside of the cooling appliance (1). A biasing means (7) is placed in-between the piston (6) and the conduit (5). As the pressure inside the cooling appliance (1) drops, the piston (6) moves towards the conduit (5). In such case the biasing means (7) biases the piston (6) away from the conduit (5). After the equalization of the pressure and should the user open the door (3), the air pressure inside the compartment (4) will be lower than the atmospheric pressure. In such case, the piston (6) will move away from the conduit (5). This time the biasing means (7) will bias the piston (6) towards the conduit (5). As a result, after each equalization of the pressure inside the inner volume of the cooling appliance (1), the piston (6) is restored to its initial condition. By means of the compartment (4), the conduit (5) and the piston (6), the vacuum is eliminated without allowing the ambient air to enter inside the cooling appliance (1). As a result, the energy efficiency of the cooling appliance (1) is improved.
  • In a preferred embodiment, a shaft (8) passes through the piston (6) via a first end (9) and onto which the biasing means (7) is placed. The shaft (8) extends partly along the length of the compartment (4) and hermetically passes through the piston (6). The first end (9) of the shaft (8) protrudes from the piston (6) and the biasing means (7) is coupled with the first end (9) forming a robust structure. By means of the shaft (8) and the first end (9), the piston (6) and the biasing means (7) is guided inside the compartment (4) during the sliding movement.
  • In a preferred embodiment, the compartment (4) comprises a partitioning wall (10) dividing the compartment (4) into two smaller volumes. The compartment (4) comprises a partitioning wall (10). The partitioning wall (10) divides the compartment (4) into two smaller sub volumes.
  • In a preferred embodiment, the partitioning wall (10) comprises a channel (11) into which the shaft (8) is slidably inserted via a second end (12). The partitioning wall (10) comprises a channel (10), preferably in the form of a circular hole, into which the shaft (8) is slidable inserted via the second end (12) of the shaft (8). Therefore, the shaft (8) is robustly guided inside the compartment (4) during the movement of the shaft (8) resulting from the pressure drop inside the cooling appliance (1).
  • In a preferred embodiment, the door (3) comprises an air reservoir (13) connected to the compartment (4) in-between the partitioning wall (10) and the conduit (5). The compartment (4) is in gas connection with the at least one air reservoir (13) accommodated inside the door (3). The air reservoir (13) is connected to the compartment (4) via an air duct. As the piston (6) slides along the compartment (4) and away from the conduit (5), the piston passes by the air duct of the air reservoir (13). The air pressure inside the air reservoir (13) is almost equal to atmospheric pressure and is greater than the pressure of the air inside the cooling appliance (1). Therefore, the air trapped inside the air reservoir (13) is used to equalize the pressure inside the cooling appliance (1). It is to be understood that multiple air reservoirs (13) may be utilized to equalize the pressure inside the cooling appliance (1).
  • In a preferred embodiment, an opening (14) is accommodated onto the door (3) and adjacent to the compartment (4) and by an indicator (15) connected to the shaft (8) via the second end (12), wherein the indicator (15) indicates the position of the shaft (8). The opening (14) is provided on the door (2) and allows the user to see the indicator (15) provided inside the compartment (4). The partitioning walls (10) forms two sub volumes. The first sub volume being in direct communication with the conduit (5) and housing the piston (6) and most of the shaft (8). The second sub volume being in communication with the first sub volume and housing the indicator (15) and a part of the shaft (8). The indicator (15) is located inside the second sub volume created by the partitioning wall (10). The indicator (15) slides along the said second sub volume and is partly visible through the opening (14). The user is therefore notified of the vacuum inside the inner volume of the cooling appliance (1). As a result, the user does not unknowingly force the door (3) to open which may require excessive force and wait for the pressure inside the cooling appliance (1) to equalize.
  • In a preferred embodiment, the indicator (15) is color coded. The indicator (15) is colored and iys color vary along its length. In a preferred embodiment, the color of the indicator (15) between red and green, the red indicating a pressure difference between the air pressure inside cooling appliance (1) and the air pressure of the outer environment. As a result, the user is notified that there the pressure difference between the inner volume of the cooling appliance (1) and the outer environment is yet to be equalized and does not force the door (3) to open. By this means, the quality perception of the cooling appliance (1) is improved.
  • In a preferred embodiment, the biasing means (7) is a spring. The springs are easily producible and long lasting, increasing vacuum removal efficiency.
  • In the cooling appliance (1) of the present invention, the vacuum occuring after closing the door (3) is eliminated by the compartment (4), piston (6) and the air reservoir (13) without taking in relatively hot air present in the ambient atmosphere helping increase energy efficiency of the cooling appliance (1).

Claims (8)

  1. A cooling appliance (1) comprising; a body (2), a door (3) that is pivotable attached onto the body (2) between a closed position and an open position wherein the door (3) prevents access inside the body (2) in the closed position,
    characterized in that
    the door (3) comprises a hermetically sealed compartment (4), and
    a conduit (5) opening to the compartment (4) from one end and facing the inner volume of the cooling appliance (1) in the closed position of the door (3) from the other end to transfer air in between,
    a piston (6) slidably placed inside the compartment (4) wherein the piston (6) hermetically divides the compartment (4), and
    a biasing means (7) placed between the piston (6) and the conduit (5).
  2. A cooling appliance (1) according to claim 1, characterized by a shaft (8) passing through the piston (6) via a first end (9) and onto which the biasing means (7) is placed.
  3. A cooling appliance (1) according to any of the preceding claims, characterized in that the compartment (4) comprises a partitioning wall (10) dividing the compartment (4) into two smaller volumes.
  4. A cooling appliance (1) according to claim 3, characterized in that the partitioning wall (10) comprises a channel (11) into which the shaft (8) is slidably inserted via a second end (12).
  5. A cooling appliance (1) according to claim 4, characterized in that the door (3) comprises an air reservoir (13) connected to the compartment (4) in-between the partitioning wall (10) and the conduit (5).
  6. A cooling appliance (1) according to claim 4 or 5, characterized by an opening (14) accommodated onto the door (3) and adjacent to the compartment (4) and by an indicator (15) connected to the shaft (8) via the second end (12), wherein the indicator (15) indicates the position of the shaft (8).
  7. A cooling appliance (1) according to claim 6, characterized in that the indicator (15) is color coded.
  8. A cooling appliance (1) according to any of the preceding claims, characterized in that the biasing means (7) is a spring.
EP20713602.9A 2019-04-16 2020-03-23 A cooling appliance having improved vacuum removal system Active EP3956616B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201905623 2019-04-16
PCT/EP2020/057953 WO2020212084A1 (en) 2019-04-16 2020-03-23 A cooling appliance having improved vacuum removal system

Publications (2)

Publication Number Publication Date
EP3956616A1 true EP3956616A1 (en) 2022-02-23
EP3956616B1 EP3956616B1 (en) 2023-01-25

Family

ID=69954040

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20713602.9A Active EP3956616B1 (en) 2019-04-16 2020-03-23 A cooling appliance having improved vacuum removal system

Country Status (3)

Country Link
EP (1) EP3956616B1 (en)
PL (1) PL3956616T3 (en)
WO (1) WO2020212084A1 (en)

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KR100204858B1 (en) * 1995-09-18 1999-06-15 전주범 Damping device of the refrigerator door
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CN107270616B (en) 2017-06-27 2022-02-15 安徽康佳同创电器有限公司 Refrigerator compartment pressure balancing device and refrigerator

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EP3956616B1 (en) 2023-01-25
PL3956616T3 (en) 2023-05-22

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