TR201611337A3 - Refrigeration appliance with zero-degree compartment having optimized structure for cooling - Google Patents

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

DESCRIPTION ZERO DEGREE WITH OPTIMIZED STRUCTURE FOR COOLING COOLING DEVICE WITH COMPARTMENT This invention is a zero degree (OOC) with ducts for supplying cold air. of said channels and said zero degree division optimized for high energy efficiency cooling. It relates to a cooling device with which it is used.

By the principle of vapor compression refrigeration cycle of a refrigerating appliance such as a refrigerator known in the art. In other words, the cooling process is a evaporator, a compressor, a condenser and an expander (through contraction) carried out by circulating between them. Cooler liquid, As it passes through the evaporator, it absorbs the ambient heat inside the refrigerator compartment. and passes from the liquid phase to the gas phase. refrigerated around the evaporator air through a fan and cooling openings in the walls of the compartments are sent back to the compartments where the food is stored.

Refrigerators contain multiple shelves and compartments where food is stored.

There are two basic compartments in refrigerators, a freezer compartment (48°C) and a is the refrigerator compartment (40C or below). foods, enzymatic, biochemical, may deteriorate due to microbiological and/or physical reasons. The rate of deterioration and mechanism is directly related to the temperature of the storage environment. In particular, meat Storing perishable foods at temperatures close to freezing required. For this reason, today's refrigerators are one of a kind, kept at 0°C. it contains an additional compartment called the zero degree compartment.

High average temperatures (2.50C to 3.50C) and zero degree compartments The high heat release negatively affects the shelf life of the foods stored in these compartments. affects. Maintaining OOC conditions doubles the shelf life of foods and increases food safety and quality. obtain sufficient cooling. Zero degree compartments are usually connected to the coldest air supply in order to It is placed below the chamber that has and flows directly into the chamber. It is cooled by cold air. The direct air flow is more inside the chamber. It creates high heat emission and direct contact of foods with dry air. causes it. To overcome this disadvantage, closing the outlets at the rear of the compartment and ensuring that the air flow is only will contact the outer walls of the compartment and indirectly cool the compartment should be guided in the sequence.

In the patent document numbered EP1811251A2, which is in the state of the art, containing two or more compartments, one of which is located above the crisper. A system used in a refrigeration appliance in which there is a secondary storage compartment that receives and the method is described. Secondary storage compartment temperature can be controlled independently from the compartments and may be colder or warmer than that of the compartments. secondary storage chamber, air ducts from the evaporator controlled by a damper It is indirectly cooled by the cold air fed over the indirectly heated. between the second] storage compartment and other compartments. heat exchange with the insulation element surrounding the secondary storage compartment is avoided. On the other hand, with this invention, the shape and dimensions of the zero degree partition are cases where it is optimized to create storage conditions is taken. To this end, with this invention, the vapor compression refrigeration cycle at least two operating principles, at least one of which is used as a zero degree division. A cooling device containing a chamber is realized. Zero degree division, by the cold air flow fed from the evaporator, the zero degree compartment is indirectly It contains channels that provide cooling. cold air flow, evaporator fan The speed is regulated by adjusting the evaporator surface temperature, so that the heat emissions are reduced and moisture is released in the ceiling of the zero degree compartment. The formation of condensation caused by it is prevented. Channel dimensions, zero degrees optimized to ensure that the chamber is cooled with high energy efficiency. is being done.

With this invention, its dimensions, defined by the features characterized in claim 1, a zero optimized to provide cooling with high energy efficiency A cooling device containing a temperature chamber is realized.

The aim of this invention is to provide ducts that supply cold air from an evaporator. said channels and said zero degree chamber in such a way that a high energy efficient cooling of the temperature chamber is obtained. It is the realization of a cooling device that is optimized.

The appended figures only outline above the advantages over the prior art. into a zero degree division, which is described and will be explained in detail below. It is given for the purpose of exemplifying a cooling device with

The figures do not limit the scope of protection defined in the claims and this without reference to the technical explanation in the explanation part of the invention, alone for the purpose of interpreting the scope defined in the claims should not be used.

Figure 1, in one embodiment of the invention, is a refrigerator comprising a zero degree chamber. is the view of the device.

Figure 2 - lateral section of a cooling device in one embodiment of the invention is the view.

Figure 3 is a lateral section of the zero degree chamber in one embodiment of the invention. is the view.

The parts in the figures are numbered one by one and the corresponding numbers are given below: 1) Cooling device 2) Storage cabinet 3) Shelf 4) Zero degree division ) Removable partition 6) Removable compartment cover 7) Top cover 8) Bottom cover 9) Upper channel ) sub channel 1 1) Rear channel 12) Shelf distance 13) Airflow mouth 14) Door shelf The cooling device (l) of the invention is a storage device with a generally rectangular cross-section. It includes the cabinet (2). The refrigerating device (l) consists of a cooling unit, a refrigerant The compressor is circulated through a condenser, an expander and an evaporator. with vapor compression refrigeration cycle principles known in the art for which it is provided. in operation and as more than one shelf (3) and at least one zero degree compartment (4). It contains multiple partitions used. The said zero degree division (4), into the storage cabinet (2), near the bottom of the evaporator level. placed as below. Known to those skilled in the art the evaporator (not shown in the figures) is perpendicular to the bottom of the cooling device (l), runs parallel to the rear surface of the cabinet. Zero degree division (4), to the lower part of the refrigerator compartment, where the various shelves (3) and the evaporator It is placed under the pipes. In this arrangement, the storage in the lowest part of the cabinet (2), under the said zero degree compartment (4), a removable compartment (5) used to store fruit and vegetables There is enough additional space for Removable compartment (5) one removable compartment it has a cover (6) and said zero degree compartment (4) has the upper cover (7) and the lower it is surrounded by the cover (8) in both vertical directions.

During compressor ON/OFF and fresh food defrost cycles, the word The temperature of the said zero degree compartment (4) depends on the evaporator fan speed. the surface is regulated by adjusting it according to its temperature, so that the heat emissions are reduced and unwanted temperature rises in the storage cabinet (2) is avoided.

The zero degree chamber (4) is connected to the ducts placed on the side walls from the evaporator. indirectly from the floor, rear and side walls by the cold air flow fed is cooled. The channels in question, i.e. the upper channel (9), the lower channel (10) and the rear the dimensions of the channel (ll) and the shelf distance (12, (d)) of the zero degree compartment (4) height (H) and height (h) and width (W) of the airflow opening (13) and their proportions are that of the formation of condensation on the ceiling of the zero degree chamber (4). in order to prevent and to realize a cooling with high energy efficiency. is being optimized. Shelf distance (12, (d)), zero degrees with one door shelf (14) is the distance between the chamber (4).

In this invention, cold air infiltration refers to the upper duct (9) and directly to zero. is the cold air flow into the temperature chamber (4). From the said upper channel (9) realization of direct air flow, direct contact of food with dry air causes it. Therefore, the vertical c dimension of the upper channel (9) is only Let the cold air infiltration in an amount to prevent the formation of condensation on the top cover (7). should be kept noticeably low. In this invention, h:H By keeping the rate constant, the effect of different d values on the flow rate can be neglected. level is provided. Also, when the value is increased (cold air It has been observed that the flow rate of the leakage has decreased. Therefore, the dza ratio is more than 1:1. is set to be high. Here, a is the zero degree division (4). the inner wall of the storage cabinet (2) where the said air flow opening (13) is located is the distance between them.

Airflow outlet (13) flush with bottom duct (10) in h:H ratios up to 1:5” cold air flows directly from the rear duct (11) and in this range the flow rate of the cold air infiltration is decreasing. Flow rate of cold air infiltration, At h:H ratios, the airflow opening (13) is colder as it aligns with the upper duct (9). The air infiltration rate is increasing and there is a significant flow of cold air. it is directed to the upper channel (9) and contacts the stored food. Because, The h:H ratio is set to be less than 1:3.

Keeping the cold air flow rate constant and changing the h:H ratio from 1:4 to 1:2, rear causing the heat transfer through channel (11) to decrease to 5.5 W. is happening. The cold air flow is ensured that it enters the rear duct (11) from the air flow port (13). Then, by making direct contact with the rear wall of the zero degree chamber (4), the heat performs the exchange. Air placed in accordance with the 1:2”1h:H ratio cold air flow from the flow spout (13) to the rear duct (II), 1:4 h:H the rear wall before it is directed into the lower channel (10), compared to with cold air flow at a ratio of 1:2 h:H, as it contacts a large surface higher amount of heat through the back wall than with a 1:4 h:H ratio exchange is taking place. h:H AT“l (“C) Qch(W) l:4 5.4 16.5 l:2 3.6 11 Experiment results show that 1:451h h:H ratio provides better cooling than the bottom wall. and the temperature distribution between the bottom wall and the rear and front walls is more homogeneous. shows that it does. Since the flow rate through the rear channel (11) is reduced, the lower wall needs to be cooled more effectively. According to these results, in order to obtain the most efficient cooling from the lower duct (10), with the h:H ratio of 1:10. It is adjusted to be between 1:3.

For laminar flow, the volumetric flow rate of the cold air is above the zero degree chamber (4). It depends on the height (H) and the width (W) of the air flow opening (13). being set, is being set.

It is sent from the air flow mouth (13) to the rear wall of the zero degree chamber (4). In order to ensure that the cold air is directed to the lower duct (10), a, lower be greater than b, which is defined as the vertical dimension of the channel (10) is being set. Also, in order to obtain a natural flow, the c:d ratio, azb It is set to be greater than the ratio. In this invention, the azb ratio is 3:1. It should be between 1:1.

Also, (1 is greater than a, a is greater than b, so d is greater than b).

In one embodiment of the invention, the cooling device (1) is a storage cabinet (2), in which cooling the said storage cabinet (2) by circulating a refrigerant. a compressor, a condenser, an expander and an evaporator that provides an upper channel (9), a lower channel (10) located inside the said storage cabinet (2). and a zero degree chamber (4) with a rear duct (11) and an evaporator fan contains.

Said zero degree compartment (4) is formed from its bottom, rear and side walls. along the bottom, rear and side walls in question by being fed from the evaporator. with the cold air flowing into the upper duct (9), the lower duct (10) and the rear duct (11) placed It is indirectly cooled, with a shelf distance (12) and a zero degree compartment (4). and an inner rear wall adjacent to said rear channel (11). ratio is greater than 1° and the said shelf distance (12) is zero with a door shelf (14). It is defined as the distance between the degree division (4).

In another embodiment of the invention, the height of an airflow opening (13) is mentioned. The ratio of the subject zero degree division (4) to its height will be less than 1:3 It is adjusted in such a way that the said air flow opening (13) The subject is located on the inner back wall.

In another embodiment of the invention, the height of the air flow opening (13) is mentioned. The ratio of the said zero degree division (4) to its height is between 1:10 and 1:3 is being set.

In another embodiment of the invention, the width of the airflow opening (13) height ratio is between 0.15 and 0.25, the height of the air flow opening (13) the ratio of said zero degree partition (4) to its height is between 0.1 and 0.8 is being set.

In another embodiment of the invention, the width of the airflow opening (13) height ratio is between 0.25 and 0.35, the height of the air flow opening (13) the ratio of said zero degree partition (4) to its height is between 0.2 and 0.7 is being set.

In another embodiment of the invention, said zero degree compartment (4) is used for storage. into the cabinet (2), below the lowest part of the evaporator level near it. will be placed as follows.

With this invention, a zero degree chamber (4) and a zero degree chamber (4) are provided with cold air. a high energy efficiency, which provides the nutrition and the dimensions and proportions A cooling device with channels optimized to achieve cooling (l) is carried out.

Claims (6)

REQUESTS 1) A storage cabinet (2) consists of a compressor, a condenser, an expander and an evaporator, which provides cooling of the said storage cabinet (2) by circulating a refrigerant, and an upper channel (9) located inside the said storage cabinet (2). ), with a shelf distance (12) defined as the distance between a door shelf (14) and a zero-degree section (4) containing a zero degree partition (4) with a bottom channel (10) and a rear channel (11), and zero where the ratio of the distance between the degree chamber (4) and an inner rear wall adjacent to the said rear channel (11) is greater than 1, it is fed from the said evaporator from its lower, rear and side walls to the upper channel placed along the said lower, rear and side walls. (9) is a cooler characterized by said zero degree chamber (4), which is indirectly cooled by the cold air flowing into the lower duct (10) and the rear duct (II). 2) As in Claim 1, characterized by an air flow opening (13) placed on the said inner rear wall of the storage cabinet (2) and adjusted in such a way that the ratio of its height to the height of the said zero degree compartment (4) is less than 1:3. such as a cooling device (1). 3) A cooling device (1) as in claim 1 or 2, characterized by the air flow opening (13) adjusted so that the ratio of its height to the height of the said zero degree chamber (4) is between 1:10 and 1:3. 4) If the ratio of its width to its height is between 0.15 and 0.25, then the ratio of its height to the height of the said zero degree chamber (4) is characterized by the air flow opening (13) adjusted between 0.1 and 0.8, Claim 1, 2 or 3 A cooling device (1) as in Fig. 5) If the ratio of its width to its height is between 0.25 and 0.35, the ratio of its height to the height of the said zero degree partition (4) is between 0.2 and 0.7, characterized by an air flow opening (13), as in Claim 1, 2 or 33 a cooler 6) A cooling device (l) as in any one of the above claims, characterized by the zero degree compartment (4) placed inside the storage cabinet (2) to be positioned below the lowest part of the evaporator level near it.