WO2014199743A1

WO2014199743A1 - Refrigerator

Info

Publication number: WO2014199743A1
Application number: PCT/JP2014/062173
Authority: WO
Inventors: 貴紀谷川; 中津　哲史; 沙織飯田
Original assignee: 三菱電機株式会社
Priority date: 2013-06-10
Filing date: 2014-05-02
Publication date: 2014-12-18
Also published as: RU2015156498A; JP2014238245A; TW201512618A; CN104236205A; MY179405A; SG11201509111UA; AU2014279424B2; AU2014279424A1; RU2628430C2; CN204006909U

Abstract

A refrigerator (1) is provided with: a cold storage compartment (20) defined and formed by a thermally insulating wall and having an open front face; a vertically extending cold air discharge duct (30) provided on the inner end-side inner wall surface (20a) of the cold storage compartment (20) at the center thereof in the left-right direction thereof and having formed therein a cold air discharge passage (31) through which cold air is caused to flow; and a cold air discharge opening (32) for discharging the cold air, which has flowed through the cold air discharge passage (31), into the cold storage compartment (20). The cold air discharge passage (31) has an elliptical cross-sectional shape.

Description

refrigerator

The present invention relates to a refrigerator.

Patent Document 1 discloses a refrigerator in which air cooled by an evaporator is blown into a refrigerator compartment through a cooling duct. The cooling duct is comprised by the inner box and the heat insulating material for an air path structure. An ion sheet for generating negative ions is attached to the cooling duct structure side of the heat insulating material for air path structure. A protrusion is formed on the inner box facing the ion sheet. The ion sheet is fixed by a heat insulating material for constructing an air passage and a protrusion. This document describes that the air path resistance of the discharged cold air can be reduced by making the shape of the protrusions cylindrical or elliptical.

JP 2004-61014 A

However, in the refrigerator of Patent Document 1, the air path resistance can be reduced when the protrusion is present in the cooling duct, but the air path resistance can be reduced when the protrusion is not present in the cooling duct. Can not. Generally, in order to reduce the air path resistance of the cold air discharge air passage, it is necessary to increase the cross-sectional area of the cold air discharge air passage. However, when the cross-sectional area of the cool air discharge air passage is increased, the volume of the cool air discharge air passage increases, and the capacity of the storage chamber decreases accordingly.

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a refrigerator capable of increasing the capacity of a storage room while suppressing an increase in air path resistance of a cold air discharge air path. And

The refrigerator according to the present invention is a cool air discharge air passage that is partitioned by a heat insulating wall and has a front surface opened, and a cold air discharge airflow that is provided to extend in the vertical direction on the inner wall surface on the back side of the storage chamber and distributes cool air A cool air discharge duct, and a cool air discharge port for discharging cool air flowing through the cool air discharge air passage into the storage chamber, wherein the cold air discharge air passage has an elliptical cross section. To do.

According to the present invention, since the cold air discharge air passage has an elliptical cross section, the cross sectional area of the cold air discharge air passage is smaller than that of the cold air discharge air passage with the same air passage resistance having a rectangular cross section. The volume of the cool air discharge air passage can be reduced. Therefore, it is possible to increase the capacity of the storage chamber while suppressing an increase in air path resistance of the cold air discharge air path.

It is a front view which shows schematic structure of the refrigerator 1 which concerns on Embodiment 1 of this invention. It is sectional drawing which shows the cross-sectional structure of the refrigerator 1 cut | disconnected by the II-II line | wire of FIG.

Embodiment 1 FIG.
A refrigerator according to Embodiment 1 of the present invention will be described. FIG. 1 is a front view showing a schematic configuration of a refrigerator 1 according to the present embodiment. FIG. 2 is a cross-sectional view showing a cross-sectional configuration of the refrigerator 1 taken along the line II-II in FIG. In FIGS. 1 and 2, the dimensional relationship and shape of each component may differ from the actual one.

As shown in FIGS. 1 and 2, the refrigerator 1 includes a heat insulating box 10 whose front surface is opened. The heat insulation box 10 has a steel plate outer box 11, a resin inner box 12, and a heat insulating material 13 filled between the outer box 11 and the inner box 12, and the inner space is externally provided. It functions as an insulating wall that insulates from the heat. As the heat insulating material 13, foamed polyurethane, a vacuum heat insulating material, or the like is used. Moreover, the internal space of the heat insulation box 10 is divided into a plurality of storage chambers that are each kept at a predetermined cold temperature by partition walls 21 (heat insulation walls) formed using a heat insulating material. The refrigerator 1 of this example has a refrigerator compartment 20, a freezer compartment, a vegetable compartment, an ice making room, a switching room, etc. as a plurality of storage rooms. Each storage room can be kept cold at different cold temperatures, for example. In FIG. 1, only the refrigerator compartment 20 arrange | positioned in the uppermost part among the some storage rooms which the refrigerator 1 has is shown, for example. The front opening of the refrigerator compartment 20 is closed so as to be freely opened and closed by a rotating heat insulating door (not shown).

A cold air discharge duct 30 for the refrigerator compartment 20 is provided along the inner wall face 20a on the inner wall face 20a on the back side of the refrigerator compartment 20 (the back face of the refrigerator compartment 20). The cold air discharge duct 30 of the present example has a configuration in which two

members

30a and 30b made of resin are combined to form a cylindrical shape, and serves as an outer wall of a cold air discharge air passage 31 described later. The cold air discharge duct 30 is disposed at the center in the left-right direction of the refrigerator compartment 20, and is provided extending in the up-down direction. Further, the cold air discharge duct 30 is provided so as to protrude (protrude out) from the inner wall surface 20 a on the back side of the refrigerator compartment 20 to the indoor side.

In the cold air discharge duct 30, a cold air discharge air passage 31 for circulating the cold air is provided extending vertically. The cool air discharge air passage 31 passes through the partition wall 21 and is connected to the air passage in the cooler chamber (not shown). Note that an evaporator (cooler) that constitutes a part of the refrigeration cycle and a fan that blows cool air cooled by the evaporator to each storage room such as the refrigerator room 20 are provided in the cooler room. . A damper for adjusting the opening degree of the air passage is provided between the cooler chamber and the cool air discharge air passage 31.

The cold air discharge path 31 has an elliptical cross section (see FIG. 2). When the ratio b / a of the minor axis b to the ellipse major axis a is an ellipticity (the ellipticity of a perfect circle is 1), the ellipticity of the elliptical shape of the cool air discharge air passage 31 of this example is 0.36 or more and 1 or less. It is. Further, the cold air discharge air passage 31 of this example has an elliptical major axis parallel to the left-right direction of the refrigerator compartment 20 and an elliptical minor axis parallel to the depth direction (front-rear direction) of the refrigerator compartment 20. Is provided.

A plurality of cold air discharge ports 32 through which the cold air flowing through the cold air discharge air passage 31 is discharged into the cold room 20 are formed on the front surface of the cold air discharge duct 30 (the surface on the indoor side of the cold room 20). The plurality of cold air discharge ports 32 are arranged in a predetermined arrangement in the vertical direction or the horizontal direction. In this example, the plurality of cold air discharge ports 32 are respectively upper portions of the plurality of stages of spaces so that they can be cooled to the near side (opening side) in the plurality of stages in the refrigerator compartment 20 partitioned by a shelf 22 described later. Is arranged. The air passage width (air passage cross-sectional area) of the cold air discharge air passage 31 and the opening area of the cold air discharge port 32 are set so as to suppress the temperature unevenness of each of the plurality of stages in the refrigerator compartment 20.

In the refrigerator compartment 20, a plurality of shelves 22 in a shallow container shape or a flat plate shape on which stored items are placed are installed horizontally. The shelf 22 is made of, for example, a transparent resin. The space in the refrigerator compartment 20 is divided into a plurality of stages by shelves 22. The shelf 22 has a planar shape along the surface of the inner box 12 (the inner wall surface of the refrigerator compartment 20), and is in contact with or close to the inner wall surface 20a on the back side of the refrigerator compartment 20. Further, the shelf 22 has a notch 22 a that is cut out corresponding to the protruding shape of the cold air discharge duct 30 at a position corresponding to the cold air discharge duct 30. The end surface of the notch 22 a is in contact with or close to the front surface of the cold air discharge duct 30.

In the refrigerator 1 having the above configuration, the cool air cooled by the evaporator in the cooler chamber is blown by a fan. The cold air blown by the fan is blown out to each storage room such as the refrigerator compartment 20 through the cold air discharge air passage 31 and other air passages. The amount of cool air blown into each storage chamber is controlled by adjusting the opening of the air passage using a damper. Thereby, each store room is kept cool to a predetermined cool temperature.

As described above, the refrigerator 1 according to the present embodiment is divided into the refrigerating room 20 (an example of a storage room) that is partitioned by a heat insulating wall and has an open front surface, and the inner wall surface 20a on the back side of the refrigerating room 20. A cold air discharge duct 30 that is provided extending in the vertical direction and has a cold air discharge air passage 31 that circulates cold air therein, and a cold air discharge port 32 that discharges the cold air flowing through the cold air discharge air passage 31 into the refrigerator compartment 20. The cool air discharge air passage 31 has an elliptical cross section.

According to this configuration, since the cool air discharge air passage 31 has an elliptical cross section, the cool air discharge is compared with a cold air discharge air passage having the same air passage resistance (same pressure loss) having a rectangular cross section. The cross-sectional area of the air path 31 can be reduced. Further, by reducing the cross-sectional area of the cool air discharge air passage 31, the cross-sectional area of the cool air discharge duct 30 serving as the outer wall of the cool air discharge air passage 31 can also be reduced. Thereby, the volume of the cool air discharge air path 31 and the cool air discharge duct 30 in the refrigerator compartment 20 can be reduced while suppressing an increase in the air path resistance of the cool air discharge air path 31. Therefore, according to this Embodiment, the capacity | capacitance of the refrigerator compartment 20 can be increased, maintaining the cooling performance of the refrigerator 1 (refrigerator compartment 20).

Further, the cold air discharge air passage 31 having an elliptical cross section can reduce the air passage resistance as compared with the cold air discharge air passage having the same cross-sectional area having a rectangular cross section. Therefore, according to this Embodiment, compared with the refrigerator provided with the cold air discharge air path of the same cross-sectional area which has a rectangular cross section, it is possible to reduce the energy required to blow cold air into the refrigerator compartment 20. it can.

Further, in the refrigerator 1 according to the present embodiment, when the ratio of the minor axis to the major axis of the elliptical shape is the ellipticity, the ellipticity of the elliptical shape in the cross section of the cool air discharge air passage 31 is 0.36 or more and 1 or less. It is characterized by this.

The smaller the ellipticity of the cross section of the cold air discharge passage 31, the larger the volumes of the cold air discharge passage 31 and the cold air discharge duct 30, and the capacity of the refrigerator compartment 20 decreases. In consideration of the definition of ellipticity, the maximum value of ellipticity is 1. Therefore, the capacity of the refrigerator compartment 20 can be increased while maintaining the cooling performance of the refrigerator 1 (the refrigerator compartment 20) by setting the ellipticity in the cross section of the cold air discharge air passage 31 to 0.36 or more and 1 or less.

Further, the refrigerator 1 according to the present embodiment is characterized in that the cold air discharge air passage 31 is provided such that the major axis of the ellipse is parallel to the horizontal direction of the refrigerator compartment 20.

According to this configuration, since the protrusion (protrusion) of the cold air discharge air passage 31 from the inner wall surface 20a on the back side of the refrigerator compartment 20 to the indoor side can be suppressed, the space in the refrigerator compartment 20 can be used effectively. And the substantial capacity of the refrigerator compartment 20 can be increased. Moreover, the designability in the refrigerator compartment 20 can be improved.

Further, in the refrigerator 1 according to the present embodiment, the cold air discharge duct 30 is provided so as to protrude from the inner wall surface 20a on the back side of the refrigerator compartment 20 to the indoor side of the refrigerator compartment 20, and in the refrigerator compartment 20, A shelf 22 is provided, and the shelf 22 includes a notch 22 a that is notched corresponding to the cold air discharge duct 30.

According to this configuration, since the area of the shelf 22 can be expanded to the maximum corresponding to the cold air discharge duct 30 protruding to the indoor side of the refrigerator compartment 20, the placement capacity of the shelf 22 can be increased.

Other embodiments.
The present invention is not limited to the above embodiment, and various modifications can be made.
For example, in the said embodiment, although the example which made the cross section of the cold air discharge air path 31 for the refrigerator compartment 20 elliptical shape was given, the cold room discharged to the storage room containing the refrigerator compartment 20 and a storage room is distribute | circulated. When a plurality of cool air discharge air paths are provided, each of the plurality of cool air discharge air paths may have an elliptical cross section. Thereby, since the volume of the cold air discharge path and the cold air discharge duct in each storage room can be reduced, the capacity of each storage room can be increased while maintaining the cooling performance of each storage room.

Also, the above embodiments and modifications can be implemented in combination with each other.

1 Refrigerator, 10 Heat insulation box, 11 Outer box, 12 Inner box, 13 Heat insulation material, 20 Cold room, 20a Inner wall surface, 21 Partition wall, 22 Shelf, 22a Notch, 30 Cold air discharge duct, 30a, 30b member, 31 cold air outlet, 32 cold air outlet.

Claims

A storage room partitioned by a heat insulating wall and having an open front surface;
A cold air discharge duct provided inside the inner wall surface on the back side of the storage room, extending in the vertical direction, and having a cold air discharge air passage for circulating cold air therein;
A cold air outlet for discharging the cold air flowing through the cold air discharge air passage into the storage chamber,
The refrigerator according to claim 1, wherein the cool air discharge air passage has an elliptical cross section.
The refrigerator according to claim 1, wherein the cold air discharge duct is provided in a central portion in the left-right direction of the storage room.
When the ratio of the minor axis to the major axis of the elliptical shape is the ellipticity,
The refrigerator according to claim 1 or 2, wherein the ellipticity of the elliptical shape is 0.36 or more and 1 or less.
The refrigerator according to any one of claims 1 to 3, wherein the cold air discharge air passage is provided so that the major axis of the elliptical shape is parallel to a horizontal direction of the storage chamber. .
The cold air discharge duct is provided to protrude from the inner wall surface on the back side of the storage chamber to the indoor side of the storage chamber,
A shelf is provided in the storage chamber,
The refrigerator according to any one of claims 1 to 4, wherein the shelf includes a notch cut out corresponding to the cold air discharge duct.
A plurality of the cold air discharge air passages for circulating the cold air discharged to the storage chamber and the storage chamber are provided, respectively.
The refrigerator according to any one of claims 1 to 5, wherein each of the plurality of cold air discharge air paths has an elliptical cross section.