WO2018063127A2 - Refrigeration appliance with zero-degree compartment having optimized structure for cooling - Google Patents

Refrigeration appliance with zero-degree compartment having optimized structure for cooling Download PDF

Info

Publication number
WO2018063127A2
WO2018063127A2 PCT/TR2017/050348 TR2017050348W WO2018063127A2 WO 2018063127 A2 WO2018063127 A2 WO 2018063127A2 TR 2017050348 W TR2017050348 W TR 2017050348W WO 2018063127 A2 WO2018063127 A2 WO 2018063127A2
Authority
WO
WIPO (PCT)
Prior art keywords
zero
compartment
refrigeration appliance
height
air flow
Prior art date
Application number
PCT/TR2017/050348
Other languages
French (fr)
Other versions
WO2018063127A3 (en
Inventor
Aydın ÇELİK
Aylin MET
Sabahattin HOCAOĞLU
Original Assignee
Arçeli̇k Anoni̇m Şi̇rketi̇
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 Arçeli̇k Anoni̇m Şi̇rketi̇ filed Critical Arçeli̇k Anoni̇m Şi̇rketi̇
Priority to EP17851898.1A priority Critical patent/EP3497386B1/en
Priority to PL17851898T priority patent/PL3497386T3/en
Publication of WO2018063127A2 publication Critical patent/WO2018063127A2/en
Publication of WO2018063127A3 publication Critical patent/WO2018063127A3/en

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
    • F25D25/00—Charging, supporting, and discharging the articles to be cooled
    • F25D25/02—Charging, supporting, and discharging the articles to be cooled by shelves
    • F25D25/024—Slidable shelves
    • F25D25/025—Drawers
    • 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
    • F25D17/08—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 using 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
    • F25D2317/061—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
    • F25D2500/00—Problems to be solved
    • F25D2500/02—Geometry problems

Definitions

  • the present invention relates to a refrigeration appliance comprising a zero degree (0°C) compartment with channels via which cool air is supplied to the zero degree compartment, where the dimensions of said channels and said zero degree compartment are optimized to ensure energy efficient cooling.
  • a refrigerating appliance such as a refrigerator operates based on the principles of the vapor-compression refrigeration cycle. Namely, cooling is performed by the refrigerant fluid, which is circulated between an evaporator, a compressor, a condenser and a tube expander (throttling device). While passing through the evaporator, the refrigerant fluid undergoes a phase transition from liquid phase into gas phase by way of absorbing the ambient heat of the refrigeration compartment.
  • a refrigeration appliance has a plurality of shelves and compartments for preserving food items.
  • Two main compartments found in refrigerators are a freezing compartment (at -18°C) and a refrigerating compartment (at or below 4°C).
  • Food items can decompose enzymatically, biochemically, microbiologically and/or physically.
  • the speed and mechanism of decomposition is closely related to the temperature of the preservation environment. Especially perishables such as meat need to be preserved at near freezing temperatures.
  • current refrigerators comprise an additional compartment, referred to as a zero-degree compartment, which is kept at 0°C.
  • zero degree compartments are generally placed below the compartment with the coolest air supply and are cooled by cool air flow directly into the compartment. Direct air flow causes higher heat release within the compartment and also causes food items to come in contact with dry air. It is necessary to close air outlets at the back of the compartment and direct air flow in such a way that it is only in contact with the outside walls of the compartment and cools the compartment indirectly to overcome this disadvantage.
  • EP1811251A2 discloses a system and method for a refrigeration appliance comprising two or more compartments, where one compartment is a sub storage compartment, which is situated above the crisper compartment.
  • the temperature of the sub storage compartment can be controlled independently from the other compartments and can be cooler or warmer than said other compartments.
  • the sub storage compartment is indirectly cooled by cold air supply from evaporator via air ducts controlled by a damper and indirectly warmed by a heater. Heat transfer between the sub storage compartment and the other compartments is prevented by insulating member surrounding the sub storage compartment.
  • the present invention addresses the situation where the shape and dimensions of the zero-degree compartment are optimized to ensure ideal storage conditions.
  • the present invention provides a refrigeration appliance operating based on the principles of the vapor-compression refrigeration cycle; where said refrigeration appliance comprises at least two compartments and where at least one of said compartments is used as a zero-degree compartment.
  • the zero-degree compartment comprises channels through which indirect cooling of the zero-degree compartment is achieved by cool air flow supplied to these channels from the evaporator. Cool air flow is regulated by adjusting evaporator fan speed according to evaporator surface temperature, thereby lowering heat release and preventing formation of condensation on the roof of the zero-degree compartment due to moisture release. Channel dimensions are optimized to ensure energy efficient cooling of the zero degree compartment.
  • the present invention provides a refrigeration appliance comprising a zero-degree compartment, the dimensions of which are optimized to ensure energy efficient cooling as provided by the characterizing features defined in Claim 1.
  • Primary object of the present invention is to provide a refrigeration appliance comprising a zero-degree compartment possessing channels via which cool air is supplied to the zero degree compartment from an evaporator, where the dimensions of said channels and said zero degree compartment are optimized to ensure energy efficient cooling.
  • Fig. 1 demonstrates a refrigeration appliance with a zero-degree compartment according to the present invention.
  • Fig. 2 demonstrates a lateral cross-sectional view of the refrigeration appliance according to the present invention.
  • Fig. 3 demonstrates a lateral cross-sectional view of the zero-degree compartment according to the present invention.
  • the present invention proposes a refrigeration appliance (1) having a generally rectangular cross-sectional storage cabin (2).
  • the refrigeration appliance (1) conventionally operates based on the principles of the vapor-compression refrigeration cycle such that cooling is achieved by circulation of a refrigerant through a compressor, a condenser, a tube expander and an evaporator, where said refrigeration appliance (1) comprises a plurality of shelves (3) and compartments and where at least one of said compartments is used as a zero-degree compartment (4).
  • Said zero-degree compartment (4) is placed within the storage cabin (2) to be positioned below the lowermost portion of the evaporator level in the proximity thereof.
  • the evaporator (not shown) extends in perpendicular to the base of the refrigeration appliance (1) in parallel with the rear surface of the cabin. More particularly, the zero-degree compartment (4) is configured to be at the lower portion of the fresh food compartment below several shelves (3) and below the evaporator's lowermost tubes. In this configuration, there still exist additional space for an extractable division (5) for fruits and vegetable at the lowermost portion of the storage cabin (2) below said zero-degree compartment (4).
  • the extractable division (5) has an extractable division cover (6) and said zero- degree compartment (4) is enclosed by top and bottom covers (7, 8) at both vertical sides thereof.
  • Zero-degree compartment (4) is indirectly cooled from its bottom, rear and side walls by cool air flowing into channels placed along said walls supplied from evaporator.
  • the dimensions of said channels i.e. top channel (9), bottom channel (10), rear channel (11) as well as shelf distance (12, (d)), height (H) of zero-degree compartment (4) and height (h) and width (w) of air flow port (13) and ratios thereof are optimized to prevent formation of condensation on the roof of the zero-degree compartment (4) and ensure energy efficient cooling of the same.
  • the shelf distance (12, (d)) is defined as the distance between a door shelf (14) and the zero-degree compartment (4).
  • cool air leak refers to cool air flow to top channel (9) and directly into zero-degree compartment (4). Direct air flow trough said top channel (9) causes food items to come in contact with dry air. Therefore, the vertical dimension c of the top channel (9) should be kept at a substantially reduced amount only to allow cool air leak to prevent condensation on the top cover (7). According to the present invention, it is established that keeping h:H ratio constant, different d values have a negligible effect on cool air leak flowrate. It is found that as d is increased, cool air leak flowrate is decreased.
  • d:a is configured to be greater than 1: 1.
  • a is defined as the distance between the zero-degree compartment (4) and the inner rear wall of the storage cabin (2), where said air flow port (13) is present.
  • air flow port (13) is level with bottom channel (10) for h:H ratios up to 1:5, cool air flows straight through rear channel (11) and cool air leak flowrate decreases in this interval. Cool air leak flowrate is constant for h:H between 1:5 and 1: 1.25.
  • cool air leak flowrate increases as air flow port becomes level with top channel (9) and a serious amount of cool air flow is directed into said top channel (9) to come in contact with food items stored therein.
  • h:H ratio is configured to be smaller than 1:3.
  • volumetric flowrate of cool air is dependent on height (H) of zero-degree compartment (4) and width (w) of air flow port such that:
  • h:H is configured to be between 0.1 and 0.8; If w:H is between 0.25 and 0.35, then h:H is configured to be between 0.2 and 0.7.
  • a is configured to be greater than b.
  • b is defined as the vertical dimension of the bottom channel (10).
  • c:d ratio is configured to be greater than a:b ratio to ensure natural flow.
  • a:b ratio must be between or equal to 3: 1 and 1: 1.
  • a refrigeration appliance (1) comprising a storage cabin (2), a compressor, a condenser, a tube expander and an evaporator such that cooling of said storage cabin (2) is effectuated by circulation of a refrigerant through said compressor, condenser, tube expander and evaporator, said refrigeration appliance (1) further comprising a zero-degree compartment (4) with a top channel (9), a bottom channel (10) and a rear channel (11) in said storage cabin (2).
  • said zero-degree compartment (4) is indirectly cooled from its bottom, rear and side walls by cool air supplied from said evaporator flowing into said top channel (9), bottom channel (10) and rear channel (11) placed along said walls in the manner that the ratio of a shelf distance (12) over the distance between the zero-degree compartment (4) and an inner rear wall neighboring said rear channel (11) is greater than 1, said shelf distance (12) being defined as the distance between a door shelf (14) and the zero-degree compartment (4).
  • the ratio of the height of an air flow port (13) over the height of said zero-degree compartment (4) is configured to be smaller than 1:3, said air flow port (13) being disposed on said inner rear wall of the storage cabin (2).
  • the ratio of width over height of the air flow port (13) is between 0.15 and 0.25
  • the ratio of the height of the air flow port (13) over the height of said zero-degree compartment (4) is configured to be between 0.1 and 0.8.
  • the ratio of width over height of the air flow port (13) is between 0.25 and 0.35
  • the ratio of the height of the air flow port (13) over the height of said zero-degree compartment (4) is configured to be between 0.2 and 0.7.
  • said zero-degree compartment (4) is placed within the storage cabin (2) to be positioned below the lowermost portion of the evaporator level in the proximity thereof.
  • a refrigeration appliance (1) comprising a zero-degree compartment (4) is proposed such that channels via which cool air is supplied to the zero-degree compartment (4) have dimensions and ratios thereof optimized to ensure energy efficient cooling.

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)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

The present invention relates to a refrigeration appliance comprising a zero degree (0oC) compartment with channels via which cool air is supplied to the zero degree compartment, where the dimensions of said channels and said zero degree compartment are optimized to ensure energy efficient cooling. The present invention more particularly relates to a refrigeration appliance (1) comprising a storage cabin (2), a compressor, a condenser, a tube expander and an evaporator such that cooling of said storage cabin (2) is effectuated by circulation of a refrigerant through said compressor, condenser, tube expander and evaporator, said refrigeration appliance (1) further comprising a zero-degree compartment (4) with a top channel (9), a bottom channel (10) and a rear channel (11) in said storage cabin (2).

Description

REFRIGERATION APPLIANCE WITH ZERO-DEGREE COMPARTMENT HAVING OPTIMIZED STRUCTURE FOR COOLING
The present invention relates to a refrigeration appliance comprising a zero degree (0°C) compartment with channels via which cool air is supplied to the zero degree compartment, where the dimensions of said channels and said zero degree compartment are optimized to ensure energy efficient cooling. It is well-known that a refrigerating appliance, such as a refrigerator operates based on the principles of the vapor-compression refrigeration cycle. Namely, cooling is performed by the refrigerant fluid, which is circulated between an evaporator, a compressor, a condenser and a tube expander (throttling device). While passing through the evaporator, the refrigerant fluid undergoes a phase transition from liquid phase into gas phase by way of absorbing the ambient heat of the refrigeration compartment. The cooled air around the evaporator is circulated back to the compartments where food items are preserved via a fan and cooling ports placed on the compartment's wall. A refrigeration appliance has a plurality of shelves and compartments for preserving food items. Two main compartments found in refrigerators are a freezing compartment (at -18°C) and a refrigerating compartment (at or below 4°C). Food items can decompose enzymatically, biochemically, microbiologically and/or physically. The speed and mechanism of decomposition is closely related to the temperature of the preservation environment. Especially perishables such as meat need to be preserved at near freezing temperatures. For this purpose current refrigerators comprise an additional compartment, referred to as a zero-degree compartment, which is kept at 0°C. High average temperatures (around 2.5°C to 3.5°C) and high heat release in zero- degree compartments are detrimental to the shelf lives of food items preserved in these compartments. Ensuring maintenance of 0°C conditions can extend the shelf life of food items two-fold and increase food safety and quality. To achieve sufficient cooling, zero degree compartments are generally placed below the compartment with the coolest air supply and are cooled by cool air flow directly into the compartment. Direct air flow causes higher heat release within the compartment and also causes food items to come in contact with dry air. It is necessary to close air outlets at the back of the compartment and direct air flow in such a way that it is only in contact with the outside walls of the compartment and cools the compartment indirectly to overcome this disadvantage. Among others, a prior art publication in the technical field of the invention may be referred to as EP1811251A2, which discloses a system and method for a refrigeration appliance comprising two or more compartments, where one compartment is a sub storage compartment, which is situated above the crisper compartment. The temperature of the sub storage compartment can be controlled independently from the other compartments and can be cooler or warmer than said other compartments. The sub storage compartment is indirectly cooled by cold air supply from evaporator via air ducts controlled by a damper and indirectly warmed by a heater. Heat transfer between the sub storage compartment and the other compartments is prevented by insulating member surrounding the sub storage compartment.
The present invention, on the other hand, addresses the situation where the shape and dimensions of the zero-degree compartment are optimized to ensure ideal storage conditions. To this end, the present invention provides a refrigeration appliance operating based on the principles of the vapor-compression refrigeration cycle; where said refrigeration appliance comprises at least two compartments and where at least one of said compartments is used as a zero-degree compartment. The zero-degree compartment comprises channels through which indirect cooling of the zero-degree compartment is achieved by cool air flow supplied to these channels from the evaporator. Cool air flow is regulated by adjusting evaporator fan speed according to evaporator surface temperature, thereby lowering heat release and preventing formation of condensation on the roof of the zero-degree compartment due to moisture release. Channel dimensions are optimized to ensure energy efficient cooling of the zero degree compartment.
The present invention provides a refrigeration appliance comprising a zero-degree compartment, the dimensions of which are optimized to ensure energy efficient cooling as provided by the characterizing features defined in Claim 1.
Primary object of the present invention is to provide a refrigeration appliance comprising a zero-degree compartment possessing channels via which cool air is supplied to the zero degree compartment from an evaporator, where the dimensions of said channels and said zero degree compartment are optimized to ensure energy efficient cooling.
Accompanying drawings are given solely for the purpose of exemplifying a refrigeration appliance with a zero-degree compartment, whose advantages over prior art were outlined above and will be explained in brief hereinafter.
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 said Claims without recourse to the technical disclosure in the description of the present invention.
Fig. 1 demonstrates a refrigeration appliance with a zero-degree compartment according to the present invention. Fig. 2 demonstrates a lateral cross-sectional view of the refrigeration appliance according to the present invention.
Fig. 3 demonstrates a lateral cross-sectional view of the zero-degree compartment according to the present invention.
The following numerals are assigned to different part number used in the detailed description: 1) Refrigeration appliance
2) Storage cabin
3) Shelf
4) Zero-degree compartment
5) Extractable division
6) Extractable division cover
7) Top cover
8) Bottom cover
9) Top channel
10) Bottom channel
11) Rear channel
12) Shelf distance
13) Air flow port
14) Door shelf
The present invention proposes a refrigeration appliance (1) having a generally rectangular cross-sectional storage cabin (2). The refrigeration appliance (1) conventionally operates based on the principles of the vapor-compression refrigeration cycle such that cooling is achieved by circulation of a refrigerant through a compressor, a condenser, a tube expander and an evaporator, where said refrigeration appliance (1) comprises a plurality of shelves (3) and compartments and where at least one of said compartments is used as a zero-degree compartment (4). Said zero-degree compartment (4) is placed within the storage cabin (2) to be positioned below the lowermost portion of the evaporator level in the proximity thereof. As is known to the skilled reader, the evaporator (not shown) extends in perpendicular to the base of the refrigeration appliance (1) in parallel with the rear surface of the cabin. More particularly, the zero-degree compartment (4) is configured to be at the lower portion of the fresh food compartment below several shelves (3) and below the evaporator's lowermost tubes. In this configuration, there still exist additional space for an extractable division (5) for fruits and vegetable at the lowermost portion of the storage cabin (2) below said zero-degree compartment (4). The extractable division (5) has an extractable division cover (6) and said zero- degree compartment (4) is enclosed by top and bottom covers (7, 8) at both vertical sides thereof. During compressor ON/OFF and fresh food defrost cycles, the temperature of said zero-degree compartment (4) is regulated by adjusting evaporator fan speed according to evaporator surface temperature, thereby lowering heat release and preventing unwanted heating of the storage cabin (2). Zero-degree compartment (4) is indirectly cooled from its bottom, rear and side walls by cool air flowing into channels placed along said walls supplied from evaporator. The dimensions of said channels, i.e. top channel (9), bottom channel (10), rear channel (11) as well as shelf distance (12, (d)), height (H) of zero-degree compartment (4) and height (h) and width (w) of air flow port (13) and ratios thereof are optimized to prevent formation of condensation on the roof of the zero-degree compartment (4) and ensure energy efficient cooling of the same. The shelf distance (12, (d)) is defined as the distance between a door shelf (14) and the zero-degree compartment (4). Within the context of the present invention, cool air leak refers to cool air flow to top channel (9) and directly into zero-degree compartment (4). Direct air flow trough said top channel (9) causes food items to come in contact with dry air. Therefore, the vertical dimension c of the top channel (9) should be kept at a substantially reduced amount only to allow cool air leak to prevent condensation on the top cover (7). According to the present invention, it is established that keeping h:H ratio constant, different d values have a negligible effect on cool air leak flowrate. It is found that as d is increased, cool air leak flowrate is decreased. For this reason, d:a is configured to be greater than 1: 1. Here, a is defined as the distance between the zero-degree compartment (4) and the inner rear wall of the storage cabin (2), where said air flow port (13) is present. As air flow port (13) is level with bottom channel (10) for h:H ratios up to 1:5, cool air flows straight through rear channel (11) and cool air leak flowrate decreases in this interval. Cool air leak flowrate is constant for h:H between 1:5 and 1: 1.25. For h:H ratios above 1: 1.25 cool air leak flowrate increases as air flow port becomes level with top channel (9) and a serious amount of cool air flow is directed into said top channel (9) to come in contact with food items stored therein. For these reasons h:H ratio is configured to be smaller than 1:3.
Keeping cool air flowrate constant, changing h:H from 1:4 to 1:2 causes heat transfer along rear channel (11) to drop 5.5 W. Upon entering rear channel (11) from air flow port (13), cool air flow makes direct contact with rear wall of the zero-degree compartment (4) and heat exchange takes place between the two. As cool air flow entering rear channel (11) from air flow port (13) placed at h:H ratio of 1:2 has a greater surface of rear wall to come into contact with before being directed to bottom channel (10) than h:H ratio of 1:4, it is observable that a higher amount of heat transfer occurs between cool air flow and rear wall for h:H ratio of 1:2 than h:H ratio of 1:4.
Figure imgf000007_0001
Experimental results show that h:H ratio of 1:4 provides better cooling from bottom wall and promotes temperature uniformity between bottom wall and rear and front walls. Since flowrate along rear channel (11) is decreased, bottom wall must be cooled more efficiently. According to these results, h:H is configured to be between 1: 10 and 1:3 for most efficient cooling from bottom channel (10).
Assuming laminar flow, volumetric flowrate of cool air is dependent on height (H) of zero-degree compartment (4) and width (w) of air flow port such that:
If w:H is between 0.15 and 0.25, then h:H is configured to be between 0.1 and 0.8; If w:H is between 0.25 and 0.35, then h:H is configured to be between 0.2 and 0.7.
To ensure the cool air aimed at rear wall of zero-degree compartment (4) by air flow port (13) is directed towards bottom channel (10), a is configured to be greater than b. b is defined as the vertical dimension of the bottom channel (10). In addition, c:d ratio is configured to be greater than a:b ratio to ensure natural flow. In the present invention, a:b ratio must be between or equal to 3: 1 and 1: 1.
Since d is greater than a and a is greater than b, it follows that d is greater than b.
In one embodiment of the present invention, a refrigeration appliance (1) comprising a storage cabin (2), a compressor, a condenser, a tube expander and an evaporator such that cooling of said storage cabin (2) is effectuated by circulation of a refrigerant through said compressor, condenser, tube expander and evaporator, said refrigeration appliance (1) further comprising a zero-degree compartment (4) with a top channel (9), a bottom channel (10) and a rear channel (11) in said storage cabin (2). said zero-degree compartment (4) is indirectly cooled from its bottom, rear and side walls by cool air supplied from said evaporator flowing into said top channel (9), bottom channel (10) and rear channel (11) placed along said walls in the manner that the ratio of a shelf distance (12) over the distance between the zero-degree compartment (4) and an inner rear wall neighboring said rear channel (11) is greater than 1, said shelf distance (12) being defined as the distance between a door shelf (14) and the zero-degree compartment (4).
In a further embodiment of the present invention, the ratio of the height of an air flow port (13) over the height of said zero-degree compartment (4) is configured to be smaller than 1:3, said air flow port (13) being disposed on said inner rear wall of the storage cabin (2).
In a further embodiment of the present invention, the ratio of the height of the air flow port (13) over the height of said zero-degree compartment (4) is configured to be between 1: 10 and 1:3.
In a further embodiment of the present invention, if the ratio of width over height of the air flow port (13) is between 0.15 and 0.25, the ratio of the height of the air flow port (13) over the height of said zero-degree compartment (4) is configured to be between 0.1 and 0.8.
In a further embodiment of the present invention, if the ratio of width over height of the air flow port (13) is between 0.25 and 0.35, the ratio of the height of the air flow port (13) over the height of said zero-degree compartment (4) is configured to be between 0.2 and 0.7.
In a further embodiment of the present invention, said zero-degree compartment (4) is placed within the storage cabin (2) to be positioned below the lowermost portion of the evaporator level in the proximity thereof.
Therefore, a refrigeration appliance (1) comprising a zero-degree compartment (4) is proposed such that channels via which cool air is supplied to the zero-degree compartment (4) have dimensions and ratios thereof optimized to ensure energy efficient cooling.

Claims

1) A refrigeration appliance (1) comprising a storage cabin (2), a compressor, a condenser, a tube expander and an evaporator such that cooling of said storage cabin
(2) is effectuated by circulation of a refrigerant through said compressor, condenser, tube expander and evaporator, said refrigeration appliance (1) further comprising a zero-degree compartment (4) with a top channel (9), a bottom channel (10) and a rear channel (11) in said storage cabin (2) characterized in that;
said zero-degree compartment (4) is indirectly cooled from its bottom, rear and side walls by cool air supplied from said evaporator flowing into said top channel (9), bottom channel (10) and rear channel (11) placed along said walls in the manner that the ratio of a shelf distance (12) over the distance between the zero-degree compartment (4) and an inner rear wall neighboring said rear channel (11) is greater than 1, said shelf distance (12) being defined as the distance between a door shelf (14) and the zero-degree compartment (4).
2) A refrigeration appliance (1) as in Claim 1, characterized in that the ratio of the height of an air flow port (13) over the height of said zero-degree compartment (4) is configured to be smaller than 1:3, said air flow port (13) being disposed on said inner rear wall of the storage cabin (2).
3) A refrigeration appliance (1) as in Claim 1 or 2, characterized in that the ratio of the height of the air flow port (13) over the height of said zero-degree compartment (4) is configured to be between 1: 10 and 1:3.
4) A refrigeration appliance (1) as in Claim 1, 2 or 3, characterized in that if the ratio of width over height of the air flow port (13) is between 0.15 and 0.25, the ratio of the height of the air flow port (13) over the height of said zero-degree compartment (4) is configured to be between 0.1 and 0.8.
5) A refrigeration appliance (1) as in Claim 1, 2 or 3, characterized in that if the ratio of width over height of the air flow port (13) is between 0.25 and 0.35, the ratio of the height of the air flow port (13) over the height of said zero-degree compartment (4) is configured to be between 0.2 and 0.7. 6) A refrigeration appliance (1) as in any preceding Claim, characterized in that said zero-degree compartment (4) is placed within the storage cabin (2) to be positioned below the lowermost portion of the evaporator level in the proximity thereof.
PCT/TR2017/050348 2016-08-12 2017-07-26 Refrigeration appliance with zero-degree compartment having optimized structure for cooling WO2018063127A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP17851898.1A EP3497386B1 (en) 2016-08-12 2017-07-26 Refrigeration appliance with zero-degree compartment having optimized structure for cooling
PL17851898T PL3497386T3 (en) 2016-08-12 2017-07-26 Refrigeration appliance with zero-degree compartment having optimized structure for cooling

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2016/11337 2016-08-12
TR2016/11337A TR201611337A3 (en) 2016-08-12 2016-08-12 Refrigeration appliance with zero-degree compartment having optimized structure for cooling

Publications (2)

Publication Number Publication Date
WO2018063127A2 true WO2018063127A2 (en) 2018-04-05
WO2018063127A3 WO2018063127A3 (en) 2018-07-05

Family

ID=61656313

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/TR2017/050348 WO2018063127A2 (en) 2016-08-12 2017-07-26 Refrigeration appliance with zero-degree compartment having optimized structure for cooling

Country Status (4)

Country Link
EP (1) EP3497386B1 (en)
PL (1) PL3497386T3 (en)
TR (1) TR201611337A3 (en)
WO (1) WO2018063127A2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1811251A2 (en) 2006-01-18 2007-07-25 Samsung Electronics Co., Ltd. Refrigerator with temperature control and operating method therefor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2297581A (en) * 1940-07-25 1942-09-29 Philco Corp Refrigerator
JP3751075B2 (en) * 1996-06-06 2006-03-01 松下冷機株式会社 refrigerator
WO1999043998A1 (en) * 1998-02-24 1999-09-02 Matsushita Refrigeration Company Storage container for use in refrigerator
KR101146274B1 (en) * 2005-09-01 2012-05-16 주식회사 대우일렉트로닉스 Thermostatic control device for vegetalbe chamber of two-door type refrigerator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1811251A2 (en) 2006-01-18 2007-07-25 Samsung Electronics Co., Ltd. Refrigerator with temperature control and operating method therefor

Also Published As

Publication number Publication date
EP3497386A2 (en) 2019-06-19
PL3497386T3 (en) 2021-08-02
EP3497386B1 (en) 2020-12-02
WO2018063127A3 (en) 2018-07-05
TR201611337A3 (en) 2018-03-21

Similar Documents

Publication Publication Date Title
AU2013242698B2 (en) Refrigerator and working method thereof
US8863537B2 (en) Single evaporator refrigeration system for multi-compartment refrigerator appliance with isolated air flows
US20090151375A1 (en) Temperature controlled compartment and method for a refrigerator
JP5903552B2 (en) refrigerator
US7237402B2 (en) Refrigerator and method
KR20140119443A (en) Refrigerator
JP2008249292A (en) Refrigerator
CN101986067A (en) Refrigerator
CN106568270A (en) Refrigerator
JP2015218943A (en) refrigerator
JP5787837B2 (en) refrigerator
JP6422513B2 (en) Freezer refrigerator
EP3497386B1 (en) Refrigeration appliance with zero-degree compartment having optimized structure for cooling
KR100633149B1 (en) Refrigerator
RU2498168C2 (en) Domestic refrigerator, and namely with no-frost system
US11268748B2 (en) Indirect air cooling for an ice maker within a refrigerator door
JP2005016903A (en) Refrigerator
KR101611274B1 (en) Refrigerator
US20160231044A1 (en) Refrigerator having circulation guiding structure enabling an improved thermal distribution profile
KR100541890B1 (en) A cooling system for variable room in the cooling chamber of refrigerators
JP2019027649A (en) refrigerator
JP2006017372A (en) Refrigerator
JP6402356B2 (en) refrigerator
KR20040040718A (en) Refrigerator with function of rapidity freezing using thermosyphon
JP5315788B2 (en) refrigerator

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17851898

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2017851898

Country of ref document: EP

Effective date: 20190312