Household Device, Particularly a Cooling Device Having an Air Distribution Opening

This application claims the priority, under 35 U.S.C. § 119, of Turkish Patent Application TR 2024/004469, filed Apr. 15, 2024; the prior application is herewith incorporated by reference in its entirety.

The present invention relates to a household device, particularly a cooling device having a cooling part, an inner rear wall that exists in the cooling part, at least one air distribution opening provided at the inner rear wall, at least one air channel through which the cold air passes and which is suitable for being connected to the other side of the inner rear wall which does not face the cooling part in a manner covering the air distribution opening, at least one air passage gap configured to correspond to the air distribution opening at the air channel, at least one air transfer part which is suitable for being connected to the air channel and which provides transfer of the cold air, formed by at least one evaporator by means of at least one fan, to the air channel, at least one air feeding opening positioned at the inner rear wall and adapted for passing the air, which exists in the cooling part, to at least one evaporator air input part which exists in the evaporator, by means of at least one air feeding channel.

Household devices, particularly cooling devices, that exist in the present art, essentially contain a cooling part and a freezing part. The cooling part contains a plate-like separation unit which is suitable for being placed to the cooling part in a removable manner and which provides separation of the cooling part to compartments. The plate-like separation units are used for placement of materials desired to be kept in the cooling device. These compartments, that exist in the cooling part, are tried to be cooled by means of multiple air flow systems that exist in the known state of the art, and an increase of temperature difference between the compartments, that exist in the cooling part, is tried to be prevented.

In European patent EP1857754B1, corresponding to U.S. Pat. No. 7,984,623, a refrigerator is provided including a freezing chamber having a first evaporator and a first fan provided inside, and a refrigerating chamber having a second evaporator and a second fan provided inside. Further, the first and second fans may be configured to direct cool air generated by the first and second evaporators to the freezing and refrigerating chambers, respectively. Additionally, a plurality of cool-air ducts may be provided in at least one of the freezing and refrigerating chambers; the cool air ducts may be configured to provide cool air to the freezing and refrigerating chambers via operation of the first and second fans, respectively.

The invention provides an additional improvement, an additional advantage or an alternative to the prior art.

The object of the invention is to provide a cooling device, particularly a household cooling device having at least one air distribution opening in a cooling part of the cooling device, where an aesthetical appearance shall be provided to users of the cooling device and where temperature difference in the cooling part shall be minimized and which can be easily produced and which provides cost advantage.

Another object of the subject matter invention is to provide decrease of the temperature degree difference, that exists in the cooling part existing in the cooling device, to preferably lower than 1 centigrade degree.

In order to achieve the object, the subject matter cooling device contains a cooling part, an inner rear wall that exists in the cooling part, at least one air distribution opening provided at the inner rear wall, at least one air channel through which the cold air passes and which is suitable for being connected to the other side of the inner rear wall which does not face the cooling part in a manner covering the air distribution opening, at least one air passage gap configured to correspond to the air distribution opening at the air channel, at least one air transfer part which is suitable for being connected to the air channel and which provides transfer of the cold air, formed by at least one evaporator by means of at least one fan, to the air channel, at least one air feeding opening positioned at the inner rear wall and adapted for passing the air, which exists in the cooling part, to at least one evaporator air input part which exists in the evaporator, by means of at least one air feeding channel, and at least one air channel surface extension which can exist at an air channel front surface in order to allow passage of different amounts of air, by at least two air distribution openings which are equivalent to each other, from the air channel to the cooling part. By means of this, while the air distribution openings are seen by the users in a manner having exactly the same size, namely equivalent to each other on the cooling part inner rear wall, the air distribution openings can be configured to be able to provide different amounts of cold air passage from the air channel to the cooling part. This condition will contribute to enhancing of the aesthetical appearance of the inner rear wall that exists in the cooling part. Additionally, input of different amounts of cold air to the cooling part through different air distribution openings which have the same size as each other is possible, the temperature differences which may occur in the cooling part will be prevented. In other words, temperature balance in the cooling part can be provided.

Here, by means of the “cooling device”, it is desired to describe any device, particularly a household cooling device, a refrigerator used in houses and which can realize cooling function and which has a cooling cycle.

Here, by means of “the other side of the inner rear wall which does not face the cooling part”, it is desired to describe the other side of the inner rear wall which is not seen by a user who looks in a manner seeing the inner rear wall that exists in the cooling part. In other words, it is desired to describe the rear side of the inner rear wall.

Here, by means of the “at least two air distribution openings which are equivalent to each other”, it is desired to describe that the air distribution openings are the same as each other in a width direction, in a depth direction and in a height direction.

Here, by means of the “air transfer part”, it is desired to describe a part which can also be mentioned as a fan housing and where a pressure chamber exists.

In a possible embodiment of the invention, the cooling device contain at least one air distribution opening positioned to the inner rear wall in a manner corresponding to the lower side of an inner upper wall that exists in the cooling part. By means of this, cold air input through the lower side of the inner upper wall of the cooling device from the air channel to the cooling part can be possible. Thus, by preventing the fluctuations in the temperature degree of the lower side of the inner upper wall of the cooling part, contribution is made for prevention of the temperature differences which may occur in the cooling part.

Since the air distribution opening is positioned at the lower side of the inner upper wall preferably in a manner close to the inner upper wall, the cold air, which comes from the air channel and which enters the cooling part through the air distribution opening, is prevented from meeting with any obstacle. Thus, blocking of cold air input through the air distribution opening from the air channel to the cooling part is prevented.

Here, the mentioned inner upper wall can also be mentioned as a ceiling of the cooling part.

Here, the mentioned inner rear wall can also be mentioned as a rear side of the cooling part.

In a possible embodiment of the invention, the cooling device contains at least one air distribution opening placed to the cooling part in a removable manner and positioned to the inner rear wall in a manner corresponding to the lower side of a plate-like separation unit which is suitable for providing formation of a cooling compartment. By means of this, air is input from the air channel to the cooling part through the lower side of the plate-like separation unit. Thus, fluctuations in temperature degree which may occur in the cooling compartment which occurs by placement of plate-like separation unit to the cooling part are prevented, and contribution is made for the prevention of temperature differences which may occur in the cooling part.

Since the air distribution opening is positioned at the lower side of the inner upper wall preferably in a manner being close to the inner upper wall, the cold air, which comes through the air channel and which enters the cooling part through the air distribution opening, is prevented from meeting with any material placed to the cooling compartment for being cooled. Thus, blocking of cold air input from the air channel to the cooling part through the air distribution opening is prevented.

In the preferred usage, the plate-like separation unit can be a shelf produced from glass material. However, if preferred, it is also possible that the plate-like separation unit can be produced from a different material.

In a possible embodiment of the invention, the cooling device contains air passage gap and air distribution opening which have the same size as each other and which are suitable for providing cold air passage from the air channel to the cooling part. By means of this, the cold air which comes from the air channel can enter the cooling part without meeting with any obstacle, namely without delimiting cold air passage. Here, by means of the statements of the air passage gap and the air distribution opening which have the same size as each other, it is desired to describe that the air passage gap and the air distribution opening have the same sizes in width and height direction.

In a possible embodiment of the invention, the cooling device contains an air passage gap configured to be bigger than the air distribution opening, which is suitable for providing cold air passage from the air channel to the cooling part, in the height direction z. By means of this, it can be possible that the size of the air passage gap, that exists in the air channel, in the height direction, is bigger than the size of the air distribution opening in the height direction. In other words, since the air passage gap is bigger than the air distribution opening, the amount of cold air which comes from the air passage gap to the air distribution opening can be increased.

In a possible embodiment of the invention, the cooling device contains an air channel surface extension which is suitable for connecting to the air channel front surface, which exists in the air channel, in a manner partially closing the air passage gap in the height direction z and which provides that the air passage gap is smaller than the air distribution opening in a manner providing partial cold air passage from the air channel to the cooling part. By means of this, since the cold air, which comes from the air channel, meets with the air channel surface extension, namely with an obstacle, the input of the cold air to the cooling part from the air distribution opening is delimited. The air passage gap is partially closed in the height direction by means of the air channel surface extension. Since the air channel surface extension can be connected to the air channel front surface, the air passage gap can be closed at the desired proportion. It can be possible that the air channel surface extension can be connected to the air channel front surface, on or under the air passage gap or both on and under the air passage gap in the height direction. This facilitates the closing of the air passage gap in the height direction with the preferred dimension at the air channel front surface. By means of this, the air passage gap can be smaller than the air distribution opening. In other words, by blocking the cold air, which comes from the air channel, by means of the air channel surface extension, the cold air can partially enter the cooling part.

In a possible embodiment of the invention, the cooling device contains an air channel surface extension which is suitable for being produced one-piece with the air channel front surface in a manner partially closing the air passage gap in the height direction z and which provides that the air passage gap is smaller than the air distribution opening in a manner providing partial cold air passage from the air channel to the cooling part. By means of this, since the cold air, which comes from the air channel, meets with the air channel surface extension, namely with an obstacle, the input of cold air to the cooling part from the air distribution opening is delimited. The air passage gap is partially closed in the height direction by means of the air channel surface extension. The air channel surface extension can be produced in a one-piece manner with the air channel front surface. Thus, production of the air channel which has air passage gap with desired size can be possible. This provides advantages in terms of cost. Moreover, by providing an air passage gap that is smaller than the air distribution opening, the cold air, which comes through the air channel, can partially enter the cooling part.

Here, by the inscription “partially”, it is desired to describe that a part of the air passage gap is closed in the height direction. By means of this, it is desired to mention that a partial cold air passage from the air passage gap to the cooling part is possible.

In a possible embodiment of the invention, the cooling device contains at least two air channels, which are suitable for being placed to the other side of the inner rear wall, which does not face the cooling part, in an orthogonal manner to the inner upper wall such that the air channels cover the air distribution openings and are parallel to each other such that there is a distance in between in the width direction x. By means of this, the temperature degree differences which may occur in the cooling part are prevented. The number of air channels which make contribution to the cooling part in accordance with the size of the cooling device can be increased. By means of this, the cooling part is cooled more rapidly. In the preferred usage, the air channels are positioned to the other side of the inner rear wall which does not face the cooling part in an orthogonal manner to the inner upper wall and in a parallel manner to each other such that there is a distance in between in the width direction x. Additionally, the air channels can be positioned in a manner parallel to a first side wall and a second side wall forming the cooling part and such that there remains a distance in the width direction between the first side wall and the second side wall. In the preferred usage, the air channel can be in the form of rectangular prism, however, it can also be possible that the air channel has a different shape. In the preferred usage, the air channel, which is in the form of a rectangular prism, has been separated into two equal compartments by means of the support part. In other words, the air channel is separated into a first compartment and a second compartment. In another preferred application of the invention, when the mentioned first compartment, the second compartment and the support part between the first compartment and the second compartment and the air distribution grid are removed, the cooling part can be seen at the inner rear wall. Here, the distance can be described as the distance in width direction, which can exist between the first side wall and the second side wall of the cooling part and the air channel or between at least two air channels in accordance with the size of the cooling device, in other words, in accordance with the width of the cooling device.

In a possible embodiment of the invention, the cooling device contains at least two air distribution openings positioned in a manner corresponding to the lower side of the inner upper wall and in a parallel manner to the inner upper wall, where each of the at least two air distribution openings is positioned to the inner rear wall in a manner corresponding to at least one air channel. By means of this, the temperature degree differences that may occur in the cooling part are prevented.

In a possible embodiment of the invention, the cooling device contains at least two air distribution openings placed to the cooling part in a removable manner and positioned to the inner rear wall in a manner corresponding to the air channel, in a parallel manner to a plate-like separation unit and in a manner corresponding to the lower side of the plate-like separation unit which is suitable for providing formation of the cooling compartment. By means of this, the temperature degree differences which may occur in the cooling part are prevented. In the preferred usage, the air distribution openings are positioned in a manner corresponding to the air channels. In accordance with the size of the cooling device, in other words, in accordance with the width of the cooling device, the number of air channels can be increased, thus, the number of air distribution openings that correspond to the air channel can also be increased.

In a possible embodiment of the invention, the cooling device includes an air channel formed by a single compartment that is suitable for transfer of cold air. By means of this, the cold air, which comes from the air channel, is transferred to the air passage gap without being interrupted, in other words, such that the cold air flow is not prevented.

In a possible embodiment of the invention, the cooling device includes at least one support part which provides separation of the air channel into at least two compartments and configured between an air channel front surface and an air channel rear surface in a manner preventing deterioration of the form of the air channel and in a manner orthogonal to the air channel front surface and the air channel rear surface. By means of this, deterioration of the form of the air channel is prevented. Thus, narrowing of the cross-section of the air channel, through which cold air comes, is prevented. This increases the usage lifetime and efficiency of the air channel. There can be more than one support part. Thus, if preferred, the air channel can be separated into more than two compartments. Moreover, the air channel front surface and said air channel rear surface can be parallel to each other.

In a possible embodiment of the invention, the cooling device contains at least one air distribution grid which connects to the air distribution opening and which provides distribution of the cold air, which passes to the cooling part through the air channel, to the cooling part. By means of this, the cold air which comes from the air channel and which passes through the air passage gap and air distribution opening can be easily distributed to the cooling part. By means of this, the temperature degree difference inside the cooling device can be decreased.

In a possible embodiment of the invention, in the cooling device, the air distribution grid contains at least one inclined guiding part which provides the cold air, which comes from the air channel, to be distributed to the cooling part. By means of this, the cold air which comes from the air channel and which passes through the air passage gap and the air distribution opening can be easily distributed to the cooling part. In other words, cold air can be transferred also towards the first side walls and the second side wall of the cooling part. By means of this, the temperature degree difference inside the cooling device can be decreased.

In a possible embodiment of the invention, in the cooling device, the air distribution grid comprises at least one flat guiding part which provides the cold air, which comes from the air channel, to be distributed to the cooling part. By means of this, the cold air which comes from the air channel and which passes through the air passage gap and the air distribution opening can be easily distributed to the cooling part. By means of this, the temperature degree difference inside the cooling device can be decreased. In the preferred usage, the flat guiding part which exists in the air distribution grid is positioned in a manner corresponding to the support part.

In a possible embodiment of the invention, the cooling device is in rectangular form configured such that the air distribution openings, which exist at the inner rear wall in the cooling part, are at the same size as each other in the width direction x and in the height direction z. By means of this, the user, who looks at the air distribution openings from the cooling part side, can see that the air distribution openings positioned at the inner rear wall are at the same size. This provides contribution for enhancing the aesthetic appearance of the cooling part. The user satisfaction increases in this direction. Even though the air distribution opening is preferably in rectangular shape, it can be arranged in any shape. By means of this, the cross-section of the air distribution opening is increased. Moreover, by means of the rectangular shape of the air distribution opening, the friction surface is reduced, and contribution is made in the direction of not reducing the pressure of cold air which comes from the air channel.

In a possible embodiment of the invention, the cooling device contains at least one connection element which provides connection of the air distribution grid to the air distribution opening. By means of this, the air distribution grid can be snap-fixed to the air distribution opening. In the preferred usage, the air distribution grid can be connected to the air distribution opening by means of at least one connection element. Preferably the connection element can be a connection tab. However, if preferred, different connection elements like adhesive, screw can also be used. The mentioned connection tab can be positioned on a first part or on a second part or can be positioned both on the first part and on the second part of the air distribution grid. In the preferred usage, on both the first part and the second part, at least one connection tab is formed in a one-piece manner with the air distribution grid. In the preferred application of the invention, there are totally four connection tabs in the air distribution grid. In order to create connection tab form both in the first part and the second part, a forming process, in other words a cutting process can be realized in a manner forming connection a tab in the first part and in the second part. This prevents extra material usage for the connection tab, thus, this provides prevention of occurrence of extra cost. In an application of the invention, the air distribution grid is connected to the air distribution opening which exists at the inner rear wall in the cooling part. In this stage, the holding surface which exists in the air distribution grid prevents sliding of the air distribution grid from the inner rear wall towards the air passage gap, and a more stable connection is provided. The air distribution grid is in the form of a channel which narrows from the inner rear wall towards the air passage gap. More specifically, the air distribution grid is seen in oblong form at the inner rear wall. However, by advancing the lateral parts towards the flat guiding part from the inner rear wall towards the air passage gap, a channel structure is formed which narrows from the oblong form, which exists in the inner rear wall, towards the air passage gap. However, the air distribution grid can be made also in different forms. Moreover, the air distribution grid also contributes to the aesthetic appearance in the cooling part. The air distribution grid can be produced from plastic material. By means of this, it can be possible that the desired shape is given to the air distribution grid. In the preferred usage, the air distribution grid is used which is formed by two inclined guiding parts and one flat guiding part. The inclined guiding parts have inclined structure in a manner providing guidance of the cold air towards the first side walls and the second side walls of the cooling part.

In a possible embodiment of the invention, an insulation material can be connected along the air channel between the air channel and the other side of the inner rear wall which does not face the cooling part. The insulation material can be selected from EPS Expanded Polystyrene. By means of this, due to the temperature degree difference between the air in the cooling part and the cold air that passes through the air channel, the condensation which may occur at the parts which correspond to the air channels at the inner rear wall of the cooling part is prevented. In other words, formation of droplets at the sections which correspond to the air channels at the inner rear wall of the cooling part is prevented. By means of this, user satisfaction increases, and an aesthetic appearance is obtained in the cooling part. Moreover, also in the insulation material, there are openings at the parts which correspond to the air passage gap and the air distribution opening.

In a possible embodiment of the invention, the air channel can be connected to the other side of the inner rear wall, which does not face the cooling part, by means of the double-sided band. If preferred, instead of the double-sided band, connection can be provided between the air channel and the other side of the inner rear wall, which does not face the cooling part, by means of engagement connection.

In a possible embodiment of the invention, after the air channel is connected to the other side of the inner rear wall which does not face the cooling part, liquid polyurethane is added to the air channel rear surface side. When the liquid polyurethane solidifies, the air channel rear surface is completely covered. Access to the air channel through the air channel rear surface is not possible. By means of this, insulation can be provided between the cooling part, that exists in the cooling device, and an outer medium where the cooling device exists. Contribution is made for protection of the cooling function of the cooling part. At this point, the support part, that can exist in the air channel, prevents flexing of the air channel rear surface towards the air channel front surface as a result of adding polyurethane from the air channel rear surface side.

In a possible embodiment of the invention, in the cooling part, there can be at least one drawered part which enables storage of various materials. The drawered part can be positioned in a manner corresponding to the air transfer part and the evaporator in the cooling part. The air distribution openings are positioned between the drawered part and the inner upper wall. In the preferred usage, there are two air distribution openings which are parallel to the inner upper wall and which are in a manner corresponding to the lower side of the inner upper wall. At the same time, the air distribution openings are positioned in a manner corresponding also to the air passage gap that exists in the air channels. The air distribution opening and the air passage gap that exists in the air channel are at the same size as each other in the height and width direction. It can be also possible that the air passage gap, that exists in the air channel, is bigger than the air distribution opening in the height and width direction. Therefore, the air distribution openings, positioned in a manner corresponding to the lower side of the inner upper wall, is the part where maximum cold air input is realized into the cooling part. In the preferred application, the air passage gap, which corresponds to the air distribution openings which exist at the lower side of the inner upper wall, is nearly 10 mm in the height direction. Cold air is inclined to collapse due to its structure. By means of this, by collapsing of the cold air, which exists at the lower side of the inner upper wall, towards the drawered part, the temperature degree difference which may occur between the lower side of the inner upper wall and the other parts of the cooling part, is prevented. Therefore, in the preferred application, the air distribution openings, positioned in a manner corresponding to the lower side of the inner upper wall, are configured to provide maximum cold air input to the cooling part.

In a possible embodiment of the invention, there are two air distribution openings in a parallel manner to the plate-like separation unit at the lower side of the plate-like separation unit. In the preferred usage, there are two plate-like separation units in the cooling part. The plate-like separation unit can be positioned in a manner remaining in the region which exists between the drawered part and the inner upper wall in the cooling part. However, if preferred, it can be positioned at equal distance to the inner upper wall and the drawered part. The second plate-like separation unit can be positioned in a manner closer to the drawered part in the cooling part. Thus, there are totally four air distribution openings positioned at the lower side of the plate-like separation unit and the second plate-like separation unit in a manner parallel to the plate-like separation unit and the second plate-like separation unit and in a manner corresponding to the air passage gaps that exist in the air channels. In the preferred usage, the air passage gap, which exists on the air channel front surface which corresponds to the air distribution opening positioned at the lower side of the plate-like separation unit, is configured to be nearly 6 mm in the height direction. In the preferred usage, the air passage gap, which exists on the air channel front surface which corresponds to the air distribution opening positioned at the lower side of the second plate-like separation unit, is configured to be nearly 6 mm in the height direction. The configuration processes are possible by means of the air channel surface extension.

In a possible embodiment of the invention, cold air passage occurs with proportion of nearly 42% through the air passage gaps which are nearly 10 mm in the height direction corresponding to the air distribution openings positioned at the lower side of the inner upper wall. Cold air passage occurs with proportion of nearly 36% through the air passage gaps which are nearly 6 mm in the height direction corresponding to the air distribution openings positioned at the lower side of the plate-like separation unit. Cold air passage occurs with proportion of nearly 22% through the air passage gaps which are nearly 6 mm in the height direction corresponding to the air distribution openings positioned at the lower side of the second plate-like separation unit. Thus, the passage of the cold air, which comes from the air channel, to the cooling part is possible in a 100% manner. The total of the proportions can change provided that the total is 100% by increasing the plate-like separation units, thus, by increasing the air distribution openings positioned to the lower side of the plate-like separation units and by increasing the air passage gaps corresponding to said air distribution openings. Moreover, it is assumed that the dimension of the air passage gaps in the width direction is fixed. In the preferred usage, the dimension of the air passage gaps in the width direction can be nearly 80 mm.

In an application of the invention, there is an evaporator cover positioned at the inner rear wall in the cooling part in a manner closing the air transfer part and the evaporator which corresponds to the drawered part. In other words, the evaporator cover forms the part of the inner rear wall which corresponds to the drawered part. By means of this, if desired, the evaporator cover is removed from the cooling part, and access can be provided to the evaporator and to the air transfer part and thus to the fan. In the preferred usage, the mentioned air transfer part is formed by connecting at least one air transfer part front face and at least one air transfer part rear face to each other. By means of this, the air transfer part can also be mentioned as a fan housing and there can be a pressure chamber in the air transfer part. Moreover, the evaporator cover also provides an aesthetic appearance.

In a possible embodiment of the invention, there is at least one air feeding opening positioned at the inner rear wall and adapted for passing the air, which exists in the cooling part, to at least one evaporator air input part which exists in the evaporator. In the preferred usage, two air feeding openings are provided which are positioned such that one of them is close to the first side wall and the other one is close to the second side wall, in a manner close to the upper side of the drawered part which exists in the cooling part, in other words, between the drawered part and the second plate-like separation unit in a manner closer to the drawered part. However, the number of the air feeding openings can be increased and decreased in the desired manner. By means of this, the air that exists in the cooling part easily passes to the evaporator air input part. The air that exists in the cooling part is transferred to the evaporator air input part that exists in the evaporator by means of air feeding channels connected to the mentioned air feeding openings. In the preferred usage, there are two air feeding channels connected to the two air feeding openings. The air feeding channel, connected to the air feeding opening which is close to the first side wall, advances through the side of the air transfer part, which is close to the first side wall, in a parallel manner to the first side wall at the side where the air transfer part rear face exists. The air feeding channel, connected to the air feeding opening which is close to the second side wall, advances through the side of the air transfer part, which is close to the second side wall, in a parallel manner to the second side wall at the side where the air transfer part rear face exists. After the air feeding channel which is close to the first side wall and the air feeding channel which is close to the second side wall pass from the side of the air transfer part which is close to the first side wall and from the side of the transfer part which is close to the second side wall, they widen and orient towards the evaporator air input part and reach the evaporator air input part. In other words, the air feeding channel which is close to the first side wall and the air feeding channel which is close to the second side wall are meeting in the evaporator air input part and are connected to the evaporator air input part in a manner closing the evaporator air input part. The number of air feeding channels can be increased and decreased in a proportional manner with the number of air feeding openings. The cooling compartment can be mentioned as the volume which exists in the cooling part and which covers the materials desired to be cooled. Preferably, the cooling compartment can also be mentioned as the volume which remains between the plate-like separation unit and the second plate-like separation unit or between the inner upper wall and the plate-like separation unit or the second plate-like separation unit or the drawered part and the plate-like separation unit or the second plate-like separation unit.

In the preferred usage, cold air, which is between −8 and −10 centigrade degrees, comes from the air channel. In case the air passage gaps, which exist in the air channel provided at the lower side of the inner upper wall, of the plate-like separation unit and of the second plate-like separation unit, are nearly 10 mm in the height direction, air passage occurs with proportion of nearly 33.3% to the cooling part through each air passage gap such that the total thereof is 100%.

Here, the mentioned “the air that exists in the cooling part” means the air that exists between the inner upper wall and the drawered part.

Moreover, there is a front opening which enables access to the cooling part by the user. The front opening exists at the opposite side of the inner rear wall that exists in the cooling part.

In this context, with the indications “inner upper wall”, “inner rear wall”, “inner lower wall”, “first side wall”, “second side wall”, “ceiling”, “base”, “upper”, “lower”, “front”, “rear”, “horizontal”, “vertical”, “upwards”, “downwards”, “inner”, “outer”, “inwardly”, “outwardly” etc. the positions and orientations given for intended use and intended arrangement of the household cooling device and for a user then standing in front of the household cooling device in a closed position of the door and viewing in the direction of the household cooling device are indicated.

By means of the statement of “reducing the temperature degree difference, which exists in the cooling part, to preferably lower than 1 centigrade degree”, it is tried to be mentioned that the temperature difference between two points to be selected randomly in the cooling part is lower than nearly 1 centigrade degree. For instance, the temperature difference between a point which is close to the inner upper wall and another point to be selected close to the drawered part shall be preferably lower than 1 centigrade degree.

Each possible embodiment disclosed in this text can be combined with the other possible embodiments disclosed in this text if there is no technical constraint.

Other features which are considered as characteristic for the invention are set forth in the appended claims.

Although the invention is illustrated and described herein as embodied in a household appliance, particularly a cooling device having an air distribution opening, it is nevertheless not intended to be limited to the details shown, since various modifications and structural changes may be made therein without departing from the spirit of the invention and within the scope and range of equivalents of the claims.