WO2021149109A1

WO2021149109A1 - Refrigerator

Info

Publication number: WO2021149109A1
Application number: PCT/JP2020/001708
Authority: WO
Inventors: 毅山村; 剛広山田
Original assignee: 三菱電機株式会社
Priority date: 2020-01-20
Filing date: 2020-01-20
Publication date: 2021-07-29
Also published as: JPWO2021149109A1; JP7224502B2

Abstract

A refrigerator according to the present disclosure is provided with: an upper wall that serves as a wall of an upper side of a storage chamber in which a to-be-cooled object is stored; and a side wall of the storage chamber, the side wall having a cold air blowout port through which is blown out cold air sent from outside the storage chamber. The cold air blowout port is arranged at a position at which an upper end matches a height of a wall surface of the upper wall in the height direction or at a position at which cold air is blown out along the wall surface, and one or more horizontal guide plates are arranged in the cold air blowout port between a right end and a left end of the cold air blowout port when viewed from the blowout direction of cold air, such that a distance in the height direction between the wall surface and a portion that becomes a rear end with respect to the blowout direction is equal to or greater than a distance in the height direction between the wall surface and a portion that becomes a front end with respect to the blowout direction. In the upper wall, a wall surface rib is arranged on the wall surface, and the wall surface rib projects downward, guides cold air blown out along the upper wall, and diffuses the cold air into the storage chamber.

Description

refrigerator

This technology is related to refrigerators. In particular, it concerns the cooling of the entire storage room.

Conventionally, there is a refrigerator that allows the cold air, which is the cooled air, to be distributed throughout even if the amount of objects to be cooled in the storage room inside the refrigerator is large. For example, in a refrigerator in which an object to be cooled such as food is placed on the upper surface of a shelf board, a wing member is arranged at a position close to a cold air outlet, and a rib is arranged on the lower surface of the shelf board (for example, Patent Document 1). reference). In this refrigerator, the object to be cooled on the shelf board can be efficiently cooled by guiding the cooled air to the lower surface of the shelf board.

Further, in a pull-out refrigerator, a method is known in which a cold air outlet is provided above a storage container so that cold air can be distributed in the storage container even when a large amount of objects to be cooled are stored in the storage container. For example, see Patent Document 2).

Japanese Unexamined Patent Publication No. 2014-159894 Japanese Unexamined Patent Publication No. 2000-046455

In recent years, with changes in lifestyle such as an increase in double-income households and single-person households, there is a growing tendency to buy many ingredients at once and store them in the refrigerator. At the same time, the capacity of refrigerators is increasing. Under such circumstances, there is a demand for a refrigerator capable of efficiently cooling the entire storage chamber without reducing the part where the object to be cooled cannot be stored and reducing the practical storage volume.

The refrigerator described in Patent Document 1 enables uniform cooling even when there are many objects to be cooled by arranging the wing members and ribs on the lower surface of the shelf plate. However, in the refrigerator of Patent Document 1, since the wing member is arranged on the lower surface of the shelf board, when the cooled object is to be placed on the shelf board one step below the shelf board, the cooled object is winged. It gets caught in the member and cannot be placed in the back of the shelf board. Therefore, in the refrigerator of Patent Document 1, the practical storage volume is reduced.

Further, the refrigerator described in Patent Document 2 uniformly cools the inside of the storage container by inflowing cooled air from above the storage container. However, the refrigerator of Patent Document 2 not only has a complicated structure, but also secures a cold air passage by allocating an area that can be used as a storage area. Therefore, as for the refrigerator of Patent Document 2, the storage volume that can actually store the object to be cooled is reduced, and the convenience of the user is impaired.

From the above, in order to solve the above-mentioned problems of the refrigerator, it is an object of the present invention to provide a refrigerator capable of supplying cooled air while securing a practical storage volume.

In order to solve the above-mentioned conventional problems, the refrigerator disclosed here has an upper wall which is an upper wall of the storage chamber where the object to be cooled is stored and a cold air outlet from which the cold air sent from the outside of the storage chamber is blown out. The cold air outlet is located at a position where the upper end coincides with the height of the wall surface on the upper wall or a position where cold air blows out along the wall surface in the height direction. , The distance in the height direction between the right end and the left end of the cold air outlet when viewed from the cold air blowing direction, the rear end with respect to the blowing direction, and the wall surface is the distance with respect to the blowing direction. One or more horizontal guide plates are arranged so as to be equal to or greater than the distance between the front end portion and the wall surface in the height direction, and the cold air protruding downward and blown out along the upper wall is blown onto the upper wall. Wall ribs that guide and diffuse into the storage chamber are placed on the wall.

According to the refrigerator according to this disclosure, the cold air emitted from the cold air outlet is made to follow the wall surface of the upper wall of the storage room, and the wall surface ribs arranged on the wall surface induce the cold air. Therefore, it is possible to efficiently supply cold air to the entire storage chamber while securing a practical storage volume without specially providing a member and a space for supplying cold air to the entire storage chamber.

It is a front view which shows typically the appearance of the refrigerator which concerns on Embodiment 1. FIG. It is a figure explaining the structure of the inside of the refrigerator when the refrigerator which concerns on Embodiment 1 is seen from the side surface side. It is a vertical cross-sectional view which shows typically the internal structure of the freezing chamber in the refrigerator which concerns on Embodiment 1. FIG. It is a figure which shows typically the state which the partition wall and the like in the refrigerator which concerns on Embodiment 1 are seen perspective from the upper surface side. FIG. 5 is an enlarged view of a vertical cross section schematically showing an example of the shape of a wall surface rib provided in the refrigerator according to the first embodiment. It is a perspective view which shows the main part of the upper cold air outlet 27a provided in the refrigerator 100 which concerns on Embodiment 1. FIG. It is a figure which shows typically the state which the partition wall and the like in the refrigerator which concerns on Embodiment 2 are seen perspective from the upper surface side. It is a vertical sectional view of the freezing chamber in the refrigerator which concerns on Embodiment 3. FIG.

Hereinafter, the refrigerator according to the embodiment will be described with reference to drawings and the like. In the following drawings, those having the same reference numerals are the same or equivalent thereto, and are common to the whole texts of the embodiments described below. The form of the component represented in the entire specification is merely an example, and is not limited to the form described in the specification. In particular, the combination of components is not limited to the combination in each embodiment, and the components described in other embodiments can be applied to another embodiment. Further, in the following description, the upper part in the figure will be referred to as "upper" and the lower part will be referred to as "lower". Further, for ease of understanding, directional terms (eg, "right", "left", "front", "rear", etc.) are used as appropriate, but they are for illustration purposes only. The terms do not limit the content of the disclosure. Further, when the refrigerator is viewed from the front (front) side facing the opening / closing door, the up-down direction is the height direction, the left-right direction is the width direction, and the front-back direction is the front-rear direction (depth direction). Also, regarding the expression of the positional relationship of the components in the following explanation, "parallel" does not necessarily mean only mathematical parallelism that planes do not intersect even if they are expanded infinitely, but they are substantially parallel. It shall also include meaning. Then, in the drawings, the relationship between the sizes of the constituent members may differ from the actual one.

Embodiment 1.
FIG. 1 is a front view schematically showing the appearance of the refrigerator according to the first embodiment. Further, FIG. 2 is a diagram illustrating a configuration inside the refrigerator when the refrigerator according to the first embodiment is viewed from the side surface side. Further, FIG. 3 is a vertical cross-sectional view schematically showing the internal configuration of the freezing chamber in the refrigerator according to the first embodiment.

As shown in FIGS. 1 and 2, the refrigerator 100 of the first embodiment includes a refrigerating room 1 having a refrigerating room opening / closing door 11 at the uppermost stage. Further, the refrigerator 100 includes a vegetable compartment 2 provided with a vegetable compartment opening / closing door 12 at the lower part of the refrigerator compartment 1. Further, the refrigerator 100 includes a freezing room 3 provided with a freezing room opening / closing door 13 at the bottom. The refrigerator 100 includes a refrigerating room 1, a vegetable room 2, and a freezing room 3 as storage rooms. The refrigerating room 1 is controlled so that the room is in a refrigerating temperature range of + 3 ° C. to 10 ° C., and stores objects to be cooled such as food. Further, the vegetable compartment 2 is controlled so that the interior is in a refrigerated temperature range of, for example, + 3 ° C. to 10 ° C., and stores objects to be cooled such as vegetables. The freezing chamber 3 is controlled so that, for example, the inside of the freezing chamber 3 has a freezing temperature range of −17 ° C. or lower, and the object to be cooled can be stored for a long period of time. Further, the freezing chamber 3 also includes an ice making chamber 4 as described later, and can produce and store ice.

Further, as shown in FIG. 2, the refrigerator 100 of the first embodiment includes a box-shaped heat insulating box body 110. The refrigerator 100 is divided into a plurality of storage chambers by a heat insulating box body 110. A gasket component 14 for suppressing heat leakage is arranged between the heat insulating box 110 and the opening / closing door of each storage chamber. Since the gasket component 14 suppresses heat leakage, the storage chamber of the refrigerator 100 can maintain a low temperature state. The refrigerator 100 has a machine room 5 and a cooling room 6 in the lower part of the back surface of the refrigerator 100 separated by the heat insulating box 110. Various devices such as a compressor 20 are housed in the machine room 5. Further, various devices such as an evaporator 21 and a blower 22 are housed in the cooling chamber 6.

Further, the refrigerator 100 has a refrigeration cycle device inside. The refrigeration cycle device cools the air in the storage chamber. The refrigeration cycle apparatus includes a compressor 20, a condenser (not shown), an expansion valve (not shown), and an evaporator 21 as a cooler as specific components. These components are connected by piping to form an annular refrigerant circuit in which the refrigerant circulates.

The compressor 20 sucks in the refrigerant from the evaporator 21 to compress it, and discharges the high-temperature and high-pressure refrigerant to the condenser. Further, the evaporator 21 exchanges heat between the refrigerant and the air passing through the cooling chamber 6 to generate cold air which is cooled air. The blower 22 generates an air flow by cold air in the cold air passage 7 leading from the cooling chamber 6 to each storage chamber, and the cold air generated by the evaporator 21 is used as the storage chambers, the refrigerating chamber 1, the vegetable compartment 2, and the freezing chamber 3. Supply to. The cold air that has passed through each storage chamber returns to the cooling chamber 6 via the cold air return air passage 8, is cooled again by the evaporator 21 in the cooling chamber 6, and is sent to each storage chamber.

Next, based on FIG. 3, the configuration and the flow of cold air in the lowermost freezing chamber 3 among the storage chambers in the refrigerator 100 will be described. However, it can also be applied to other storage rooms such as the refrigerating room 1 and the vegetable room 2. As shown in FIG. 3, a drawer-type freezing chamber opening / closing door 13 is provided on the front surface of the freezing chamber 3. The freezing chamber opening / closing door 13 includes a support 15 that supports the lower storage container 23. Further, the upper storage container 24 is placed above the lower storage container 23 so that the side bottom portion slides on the upper side of the lower storage container 23. By pulling the freezing chamber opening / closing door 13, the lower storage container 23 supported by the support 15 and the upper storage container 24 placed on the lower storage container 23 are pulled out. Then, by pushing in the upper storage container 24, the upper part of the lower storage container 23 is opened, and food and the like stored in the lower storage container 23 can be taken in and out.

The partition wall 25 formed by the heat insulating body serves as a wall that separates the freezing chamber 3 and the vegetable compartment 2. Since the freezing room 3 is on the lower side of the vegetable room 2, the partition wall 25 is the upper wall of the freezing room 3. Here, it is assumed that the partition wall 25 is a part of the heat insulating box body 110, but the partition wall 25 is not limited to this. Further, in the refrigerator 100 of the first embodiment, the cooling chamber 6 described above is formed on the rear side of the freezing chamber 3 by the heat insulating box body 110 and the first air passage component 26. The above-mentioned evaporator 21 is arranged in the cooling chamber 6. The blower 22 described above is arranged above the evaporator 21.

The cold air generated by the evaporator 21 of the cooling chamber 6 is sent to the distribution air passage 9 through the cold air air passage 7 by the air flow of the blower 22. The distribution air passage 9 is an air passage composed of the first air passage component 26 and the second air passage component 27. The second air passage component 27 is a component that serves as a wall on the rear side of the freezing chamber 3. The second air passage component 27 has an opening portion that communicates the distribution air passage 9 with the space of the freezing chamber 3. The upper cold air outlet 27a is an opening through which cold air passes from the rear upper portion of the upper storage container 24 toward the inside of the upper storage container 24. Further, the lower cold air outlet 27b is an opening portion through which cold air passes from the rear upper portion of the lower storage container 23 toward the inside of the lower storage container 23. Therefore, the blower 22 to the upper cold air outlet 27a communicate with each other through the cold air passage 7 and the distribution air passage 9. Further, even between the blower 22 and the lower cold air outlet 27b, the cold air passage 7 and the distribution air passage 9 communicate with each other. Here, the second air passage component 27 of the refrigerator 100 of the first embodiment further has an ice-making cold air outlet 27c that supplies cold air to the ice-making chamber 4 in the freezing chamber 3, as will be described later.

In the refrigerator 100 of the first embodiment, the upper end of the upper cold air outlet 27a is arranged at a position coincident with or close to the partition wall surface 25a on the lower surface side of the partition wall 25 in the height direction. Since the upper cold air outlet 27a is located at the same position as or close to the partition wall surface 25a, the cold air emitted from the upper cold air outlet 27a is blown out along the partition wall surface 25a. Here, the reason why the cold air flows along the partition wall surface 25a will be described. The cold air blown out from the upper cold air outlet 27a pulls the air between the partition wall surface 25a and the upper end of the upper cold air outlet 27a to the outer edge of the cold air blown out by viscosity. The pulled air is carried downstream. Therefore, the pressure drops between the partition wall surface 25a and the upper end of the upper cold air outlet 27a. Since the cold air flows toward the lower pressure side, the cold air exiting the upper cold air outlet 27a exerts a force toward the partition wall surface 25a. As a result, the cold air emitted from the upper cold air outlet 27a collides with the partition wall surface 25a and flows along the partition wall surface 25a so as to adhere to the partition wall surface 25a.

Here, the larger the velocity difference between the flow velocity of the cold air blown out from the upper cold air outlet 27a and the flow velocity of the air flowing in the refrigerator, the stronger the viscosity works and the stronger the force pulling the cold air to the partition wall surface 25a based on Newton's viscosity law. It works. Further, the closer the upper cold air outlet 27a in the height direction is to the partition wall surface 25a, the more easily the blown cold air collides with the partition wall surface 25a. Based on the above, the upper end of the upper cold air outlet 27a is located at a position corresponding to or close to the partition wall surface 25a in the height direction, and is arranged so that cold air is blown out along the wall surface. Is requested.

Then, in order to secure the flow velocity of the cold air coming out of the upper cold air outlet 27a, the upper cold air outlet 27a has a small cross-sectional area of the outlet in the direction perpendicular to the blowing direction. More preferably, the cross-sectional area of the upper cold air outlet 27a in the direction perpendicular to the blowing direction is perpendicular to the airflow direction in the cold air passage 7 and the distribution air passage 9 passing from the blower 22 to the upper cold air outlet 27a. It is configured to have the smallest cross-sectional area. With such a configuration, the cold air sent by the blower 22 has a higher flow velocity at the upper cold air outlet 27a and is blown out as a jet. The cold air blown out from the upper cold air outlet 27a increases the flow velocity as a jet, so that the force toward the partition wall surface 25a increases and collides with the partition wall surface 25a more reliably. Here, a wall surface rib 28 projecting downward is arranged on the partition wall surface 25a. Here, the wall surface rib 28 and the partition wall 25 may be integrally formed.

FIG. 4 is a diagram schematically showing a state in which a partition wall or the like in the refrigerator according to the first embodiment is viewed perspectively from the upper surface side. Here, as shown in FIG. 4, the refrigerator 100 according to the first embodiment includes an ice making chamber 4 in the freezing chamber 3. The ice making chamber 4 is located above the freezing chamber 3, and the ice produced in the ice making chamber 4 can be stored by using a part of the upper storage container 24. Further, in the refrigerator 100 of the first embodiment, an ice-making cold air outlet 27c for blowing cold air is arranged in the ice-making chamber 4. The ice-making cold air outlet 27c is formed by a distribution air passage 9.

Further, as shown in FIG. 4, the wall surface rib 28 according to the first embodiment is arranged in the freezing chamber 3 to cool the inside of the upper storage container 24 excluding the ice making chamber 4. The wall surface rib 28 is a member that blows out from the upper cold air outlet 27a, regulates a part of the cold air along the partition wall surface 25a so as to adhere to the partition wall surface 25a, and guides the cold air in a predetermined direction. Then, the wall surface rib 28 supplies the cold air from above the upper storage container 24 into the upper storage container 24 while spreading the cold air guided along the wall surface rib 28 over the entire upper storage container 24. Therefore, it is not desirable that the wall surface rib 28 be configured at a height that completely regulates the flow along the partition wall surface 25a. On the other hand, the wall surface rib 28 needs to have a height that allows cold air to flow in and can be changed in the direction toward the inside of the upper storage container 24. Therefore, the wall surface rib 28 in the refrigerator 100 of the first embodiment is configured to have a height smaller than the distance between the partition wall surface 25a and the lower end of the upper cold air outlet 27a.

Further, as shown in FIG. 4, the wall surface ribs 28 are arranged radially from the center to the outside of the upper cold air outlet 27a. With this arrangement, on the partition wall surface 25a, the effect of spreading the cold air by the wall surface rib 28 and the effect of guiding the cold air into the container can be obtained. Therefore, the distance L1 between the rear end far from the center of the upper cold air outlet 27a of the wall surface rib 28 and the wall on the back side is the rear end and the back side closer to the center of the cold air outlet of the wall surface rib 28. The distance to the wall must be greater than L2. Therefore, as shown in FIG. There is a relationship of L1> L2.

By arranging the wall surface ribs 28 having the height specified as described above, as shown by the arrow shown in FIG. 4, some of the cold air adhering to the partition wall surface 25a by blowing out the upper cold air outlet 27a is partially wall surface ribs 28. Flows along. Then, the other cold air passes over the wall surface rib 28 and flows to the front side without being completely regulated. Then, the cold air is supplied into the upper storage container 24 while spreading on the surface of the partition wall surface 25a. Therefore, the inside of the upper storage container 24 can be uniformly cooled.

Here, as shown in FIG. 4, in the refrigerator 100 according to the first embodiment, a plurality of the above-mentioned wall surface ribs 28 are installed on the partition wall surface 25a of the freezing chamber 3. In FIG. 4, the plurality of wall surface ribs 28 are arranged radially from the upper cold air outlet 27a toward the freezing chamber opening / closing door 13 in order to efficiently spread the cold air adhering to the partition wall surface 25a. However, regarding the wall surface rib 28, it is sufficient that the direction of the cold air can be changed so that the cold air is supplied into the upper storage container 24 while spreading the cold air to the entire freezing chamber 3 along the partition wall surface 25a. Therefore, the wall surface rib 28 is not limited to the radial arrangement, and may be arranged in a direction perpendicular to the direction in which the cold air is blown out from the upper cold air outlet 27a. At this time, the distance between the rear end of the wall surface rib 28 arranged closer to the upper cold air outlet 27a and the front end of the upper cold air outlet 27a is the distance of the wall surface rib 28 arranged farther from the upper cold air outlet 27a. It is longer than the distance between the rear end and the front end of the upper cold air outlet 27a.

FIG. 5 is an enlarged view of a vertical cross section schematically showing an example of the shape of the wall surface rib provided in the refrigerator according to the first embodiment. FIG. 5 is based on the cross section taken along line AA shown in FIG. As shown in FIG. 5, the wall surface rib 28 has an inclined surface facing the wall on the back side of the freezing chamber 3, and has an oblique cross-sectional shape. Since each wall surface rib 28 has such a shape, when the user takes out food or the like from the upper storage container 24, it is possible to prevent the wall surface rib 28 arranged on the partition wall surface 25a from hindering the removal. ing.

FIG. 6 is a perspective view showing a main part of the upper cold air outlet 27a included in the refrigerator 100 according to the first embodiment. The upper cold air outlet 27a of the first embodiment is configured such that the width direction distance between the right end and the left end is larger than the height direction distance between the upper end and the lower end. Therefore, the cold air outlet at the upper cold air outlet 27a has a horizontally long shape. By configuring the upper cold air outlet 27a in a horizontally long shape, the shape of the cold air emitted from the upper cold air outlet 27a in the direction perpendicular to the blowing direction becomes flat. When the cold air blown out flatly from the upper cold air outlet 27a adheres to the partition wall surface 25a, it has a function of more reliably spreading the cold air on the partition wall surface 25a together with the effect on the wall surface rib 28.

Further, as shown in FIG. 6, at the upper cold air outlet 27a, one or more horizontal guide plates 29 are arranged between the upper end and the lower end so as to be parallel to the partition wall surface 25a. Since the upper cold air outlet 27a has the horizontal guide plate 29, the cold air that has passed through the upper cold air outlet 27a from the cold air passage 7 or the distribution air passage 9 is blown out in the direction parallel to the partition wall surface 25a. Therefore, the horizontal guide plate 29 prevents the blown cold air from adhering in the direction along the partition wall surface 25a and preventing the cold air from being blown into the upper storage container 24 without being made uniform.

Here, the horizontal guide plate 29 is installed in order to prevent the cold air blown out from the upper cold air outlet 27a from flowing without adhering to the partition wall surface 25a. Therefore, in order for the cold air to be blown out to the partition wall surface 25a, the direction of the horizontal guide plate 29 may be parallel or upward rather than parallel so that the blown cold air hits the partition wall surface 25a. Based on the above, in the horizontal guide plate 29, the distance between the rear end portion of the horizontal guide plate 29 in the height direction and the partition wall surface 25a is the tip of the horizontal guide plate 29 in the height direction. It is required that the portion is arranged so as to be at least the distance between the portion and the partition wall surface 25a.

Further, the upper cold air outlet 27a of the first embodiment includes one or more vertical guide plates 30 perpendicular to the horizontal guide plate 29. By installing the vertical guide plate 30 at the upper cold air outlet 27a, it is possible to control the flow of cold air in the left-right direction at the upper cold air outlet 27a. Then, the flat cold air further spreads in the left-right direction and flows, and promotes the action of spreading the cold air by the partition wall surface 25a and the wall surface rib 28. Here, a cold air return air passage 8 is formed in the lower rear part of the freezing chamber 3 by the heat insulating box body 110 and the first air passage component 26. The cold air flowing into the upper storage container 24 circulates in the upper storage container 24 as shown by the arrow shown in FIG. Then, the cold air returns to the cooling chamber 6 from the rear of the upper storage container 24 through the cold air return air passage 8, and is cooled again by the evaporator 21.

As described above, in the refrigerator 100 of the first embodiment, the upper cold air outlet 27a is arranged at a position where the upper end coincides with or is close to the partition wall surface 25a located on the upper side of the upper storage container 24. The upper cold air outlet 27a has a horizontal guide plate 29 in which the distance between the rear end and the partition wall surface 25a is equal to or greater than the distance between the front end and the partition wall surface 25a. At this time, the horizontal guide plate 29 is parallel to or more upward than parallel to the partition wall surface 25a. Therefore, the cold air passing through the upper cold air outlet 27a adheres to the partition wall surface 25a and can flow along the partition wall surface 25a.

Further, in the refrigerator 100 of the first embodiment, the partition wall 25 has a wall surface rib 28 protruding below the partition wall surface 25a. Therefore, the wall surface rib 28 can not only guide the cold air flowing along the partition wall surface 25a in the direction of spreading, but also guide the cold air into the upper storage container 24. Therefore, the cold air guided by the wall surface rib 28 can uniformly cool the inside of the upper storage container 24 while spreading along the partition wall surface 25a. Therefore, it is possible to prevent uneven cooling and prevent dew condensation, cold air leakage, and the like.

Further, by arranging the wall surface rib 28, even when a large amount of food or the like is stored in the upper storage container 24, an air passage is provided between the partition wall surface 25a and the food by the height of the wall surface rib 28. Can be secured. The tip of the upper cold air outlet 27a is arranged at a position rearward from the rear end of the bottom surface of the upper storage container 24 in the depth direction. Therefore, in the refrigerator 100 according to the first embodiment, there is a certain gap between the upper cold air outlet 27a and the food or the like, and the cold air is not blocked. Therefore, the cold air adhering to the partition wall surface 25a is efficiently sent into the upper storage container 24 through the air passage corresponding to the height of the wall surface rib 28.

Further, in the refrigerator 100 of the first embodiment, in the wall surface rib 28, the distance between the lower end of the wall surface rib 28 closer to the upper cold air outlet 27a and the partition wall surface 25a is the wall surface rib farther from the upper cold air outlet 27a. The configuration is smaller than the distance between the lower end of 28 and the partition wall surface 25a. Therefore, when the user takes out the food or the like, the troublesomeness that the food or the like is caught on the wall surface rib 28 can be eliminated. Thereby, the convenience in using the refrigerator 100 can be enhanced. Further, by forming the wall surface rib 28 in such a shape, it is possible to reduce the pressure loss when the cold air along the partition wall surface 25a collides with the wall surface rib 28. Further, due to the wall surface rib 28, the cold air of the upper cold air outlet 27a spreads along the partition wall surface 25a and flows toward the upper storage container 24. Therefore, the cold air diffuses by the time it reaches the vicinity of the freezing chamber opening / closing door 13 in contact with the outside air. Since the cold air flowing near the freezing chamber opening / closing door 13 can be suppressed, the effect of shielding cold air leakage can be enhanced.

Further, the cold air jet can be attached to the partition wall surface 25a by providing the positional relationship between the upper cold air outlet 27a and the partition wall surface 25a and the horizontal guide plate 29 to the upper cold air outlet 27a. From the above, it is possible to uniformly cool the entire freezing chamber 3 by distributing cold air without reducing the practical storage volume without providing a member that inhibits storage. Therefore, even when a large amount of objects to be cooled such as food are stored, efficient cooling can be performed.

Embodiment 2.
FIG. 7 is a diagram schematically showing a state in which a partition wall or the like in the refrigerator according to the second embodiment is viewed perspectively from the upper surface side. FIG. 7 corresponds to FIG. 4 of the first embodiment. The refrigerator 100 of the second embodiment described here is different from the refrigerator 100 of the configuration of the first embodiment in that it does not have the ice making cold air outlet 27c. Further, in the refrigerator 100 of the first embodiment, the wall surface rib 28 was not installed on the upper side of the ice making chamber 4, but in the refrigerator 100 of the second embodiment, the wall surface rib 28 is installed over the entire surface of the partition wall surface 25a. It is different in that it is.

Next, an example of the configuration of the refrigerator 100 according to the second embodiment will be described with reference to FIG. 7. As shown in FIG. 7, in the refrigerator 100 of the second embodiment, the wall surface rib 28 is provided on the entire surface of the partition wall surface 25a from the upper cold air outlet 27a on the rear side of the refrigerator 100 to the freezing chamber opening / closing door 13 on the front side. They are arranged radially toward you. Here, the wall surface rib 28 installed at the position closest to the upper cold air outlet 27a is arranged from the front of the outlet to the ice making chamber 4. By arranging the wall surface ribs 28 in this way, the cold air having a low temperature immediately after being blown out from the upper cold air outlet 27a and adhering to the partition wall surface 25a is preferentially guided to the ice making chamber 4 and inside the ice making chamber 4. Can be cooled.

As described above, in the refrigerator 100 of the second embodiment, the ice making cold air outlet 27c is removed and the cold air is blown out from the upper cold air outlet 27a, so that the flow rate of the cold air blown out from the upper cold air outlet 27a is increased. Also, the flow velocity can be increased. Therefore, the cold air can be promoted to adhere to the partition wall surface 25a, and the cold air can be effectively made uniform by the partition wall surface 25a and the wall surface rib 28.

Embodiment 3.
FIG. 8 is a vertical cross-sectional view of the freezing chamber in the refrigerator according to the third embodiment. The refrigerator 100 of the third embodiment described here is different from the refrigerator 100 having the configuration of the first embodiment or the second embodiment in that the wall surface rib 28 is installed on the bottom surface of the upper storage container 24. .. Further, the lower cold air outlet 27b described in the first embodiment is arranged at a position where the bottom surface and the upper end of the upper storage container 24 located above the lower storage container 23 coincide with or are close to each other.

Next, an example of the configuration of the refrigerator 100 according to the third embodiment will be described with reference to FIG. In FIG. 8, the bottom surface of the upper storage container 24 is a wall that separates the storage space of the upper storage container 24 and the storage space of the lower storage container 23. Therefore, similarly to the partition wall 25, by arranging the wall surface rib 28 on the bottom wall of the upper storage container 24 which is the upper wall of the lower storage container 23, the upper storage container 24 can be similarly made the lower storage container 23. The inside can be cooled uniformly.

Further, since the cold air flows along the bottom surface of the upper storage container 24, not only the cold air is diffused to the lower storage container 23 by the wall surface rib 28, but also the upper storage container 24 can be cooled from the bottom surface side. In particular, when a large amount of food or the like is stored in the upper storage container 24, in addition to being able to efficiently cool from above the upper storage container 24, it is also possible to cool from the bottom surface of the upper storage container 24. .. Therefore, the refrigerator 100 of the third embodiment can more effectively cool the object to be cooled in the upper storage container 24.

Embodiment 4.
In the refrigerator 100 of the above-described first to third embodiments, the freezing chamber 3 has been described as an example of the storage chamber, but the storage chamber is not limited to this, and the storage chamber may be applied to other storage chambers as well. Can be done. Therefore, the wall surface rib 28 may be installed on the upper wall in another storage room in the refrigerator 100 other than the partition wall 25 formed by the heat insulating box body 110 or the like.

Further, in the refrigerator 100 of the above-described first to third embodiments, the second air passage component 27 which is a side wall behind the freezing chamber 3 has an upper cold air outlet 27a and a lower cold air outlet 27b. Cold air was blown from the rear side to the front side of the freezing chamber 3. However, the present invention is not limited to this. The cold air outlet may be installed on the side.

1 Refrigerator room, 2 Vegetable room, 3 Freezer room, 4 Ice making room, 5 Machine room, 6 Cooling room, 7 Cold air passage, 8 Cold air return air passage, 9 Distribution air passage, 11 Refrigerator room opening / closing door, 12 Vegetable room opening / closing Door, 13 Refrigerator opening / closing door, 14 Gasket parts, 15 Support, 20 Compressor, 21 Evaporator, 22 Blower, 23 Lower storage container, 24 Upper storage container, 25 Partition wall, 25a Partition wall, 26 First air passage Parts, 27 second air passage parts, 27a upper cold air outlet, 27b lower cold air outlet, 27c ice-making cold air outlet, 28 wall ribs, 29 horizontal guide plates, 30 vertical guide plates, 100 refrigerators, 110 heat insulating boxes.

Claims

The upper wall, which is the upper wall of the storage room where the object to be cooled is stored,
It is provided with a side wall of the storage chamber having a cold air outlet from which cold air sent from outside the storage chamber is blown out.
The cold air outlet is arranged at a position where the upper end coincides with the height of the wall surface on the upper wall or at a position where the cold air blows out along the wall surface in the height direction.
The cold air outlet has the height between the right end and the left end of the cold air outlet when viewed from the cold air outlet direction, and the rear end portion with respect to the outlet direction and the wall surface. One or more horizontal guide plates are arranged so that the distance in the vertical direction is equal to or greater than the distance in the height direction between the portion at the front end with respect to the blowing direction and the wall surface.
A refrigerator in which a wall surface rib that projects downward and induces the cold air blown out along the upper wall and diffuses into the storage chamber is arranged on the upper wall.
The first aspect of the present invention is the cold air outlet, wherein the cross-sectional area in the direction perpendicular to the blowing direction is smaller than the cross-sectional area of the air passage from the blower that sends the cold air to the cold air outlet. Refrigerator.
The refrigerator according to claim 1 or 2, wherein the cold air outlet has a shape in which the distance between the right end and the left end is longer than the distance between the upper end and the lower end.
The cold air outlet has one or more vertical guide plates perpendicular to the horizontal guide plate between the upper end and the lower end of the cold air outlet, according to any one of claims 1 to 3. The listed refrigerator.
A plurality of the wall surface ribs are installed on the wall surface of the upper wall, and the distance between the rear end of the wall surface ribs far from the center of the cold air outlet and the wall on the back side is the cold air of the wall surface ribs. The refrigerator according to any one of claims 1 to 4, which has a relationship larger than the distance between the rear end closer to the center of the air outlet and the wall on the back side.
The refrigerator according to any one of claims 1 to 5, wherein the wall surface rib has a height of a protruding portion lower than the distance between the upper wall and the lower end of the cold air outlet.
Any of claims 1 to 6, wherein a plurality of the wall surface ribs are installed on the wall surface of the upper wall, the surface of the wall surface ribs facing the inner wall is a slope, and the cross-sectional shape is slanted. The refrigerator described in item 1.
Claim 1 in which the portion of the cold air outlet that is the front end with respect to the outlet direction is located rearward of the portion that is the rear end of the bottom surface of the storage container housed in the storage chamber with respect to the outlet direction. The refrigerator according to any one of claims 7.
The refrigerator according to any one of claims 1 to 8, which has a storage container housed in the upper part of the storage chamber, and the bottom wall of the storage container has the wall rib.
A cooler that cools the air to generate the cold air,
The refrigerator according to any one of claims 1 to 9, further comprising a blower that sends the cold air generated by the cooler to the cold air outlet.