JP2023000695A - refrigerator - Google Patents

Abstract

To provide a refrigerator that reduces input to a heater for dew condensation prevention, and has high energy saving performance.SOLUTION: A refrigerator 50 according to the present disclosure comprises a refrigerator body 1 comprising a storage chamber, a double door type first door 6A provided on one side of a front opening part 1A of the storage chamber, and a double door type second door 6B provided on the opposite side of the front opening part 1A of the storage chamber. The first door 6A and the second door 6B are pivotally supported in a rotatable manner. The refrigerator comprises a sheet having high heat conductivity for transferring heat of outside air to opposed surfaces when the first door 6A and the second door 6B are closed.SELECTED DRAWING: Figure 3

Description

The present disclosure relates to refrigerators.

Patent Literature 1 discloses a refrigerator that prevents dew condensation occurring on the surface of a rotating partition. This refrigerator has storage compartments such as a refrigerating compartment, a freezing compartment, and a vegetable compartment that can be freely opened and closed by doors. Large refrigerators have a double door and rotates in conjunction with the opening and closing of either the left or right door. A rotating partition is provided.

JP 2010-249491 A

The present disclosure reduces the input to the heater for dew condensation prevention and provides a highly energy-saving refrigerator.

A refrigerator according to the present disclosure includes a refrigerator main body having a storage compartment, a double-door first door provided on one side of a front opening of the storage compartment, and a front opening of the storage compartment on the opposite side. and a second double door, wherein the first door and the second door are rotatably supported. This refrigerator is characterized by comprising a sheet having a high thermal conductivity for conveying heat of outside air to surfaces facing each other when the first door and the second door are closed.

In the refrigerator according to the present disclosure, the heat of the outside air is transferred by the heat transfer means between the first door and the second door when closed, so that the input to the heater that prevents dew condensation on the rotating partition is reduced, Energy saving can be improved.

A perspective view of the refrigerator according to Embodiment 1 Perspective view showing one of the double doors of a refrigerator Cross-sectional view of main parts of a double door of a refrigerator and a rotating partition Perspective view of a refrigerator according to Embodiment 2

(Knowledge, etc. on which this disclosure is based)
At the time when the inventors came up with the present disclosure, refrigerators generally have storage compartments such as a refrigerating compartment, a freezing compartment, and a vegetable compartment that can be freely opened and closed by doors. Each storage room can be opened and closed by a door. In a large-sized refrigerator, the door of the refrigerator compartment is a double door. The double-opening type door is provided with a rotating partition body that rotates in conjunction with opening or closing either the left or right door. As a result, in the refrigerator, the airtightness is ensured by closing the gap between the door end surfaces that occurs when the door is closed. A heater is attached to the inner surface of the rotary partition to prevent dew condensation from occurring on the surface of the rotary partition (see, for example, Patent Document 1).

However, in the configuration of the conventional refrigerator described above, part of the heat from the heater penetrates into the refrigerating compartment via the rotating partition. Therefore, there is a problem that the input to the heater for preventing dew condensation generated on the surface of the rotary partition increases.
Accordingly, the present disclosure provides a highly energy-saving refrigerator by reducing the input to the heater that prevents dew condensation on the rotating partition.

Hereinafter, embodiments will be described in detail with reference to the drawings. However, more detailed description than necessary may be omitted. For example, detailed descriptions of well-known matters or redundant descriptions of substantially the same configurations may be omitted. This is to avoid the following description from becoming more redundant than necessary and to facilitate understanding by those skilled in the art.
It should be noted that the accompanying drawings and the following description are provided to allow those skilled in the art to fully understand the present disclosure and are not intended to limit the claimed subject matter thereby.

(Embodiment 1)
Embodiment 1 will be described below with reference to FIGS. 1 to 3. FIG.
[1-1. composition]
[1-1-1. Refrigerator configuration]
1 is a perspective view of a refrigerator according to Embodiment 1. FIG.
In FIG. 1, a refrigerator 50 according to this embodiment has a refrigerator main body 1 with an open front. This refrigerator main body 1 is composed of an outer box 2 made of metal and an inner box 3 made of hard resin. The interior of the inner box 3 is partitioned into a plurality of storage compartments by partition plates 4, 5 and the like. Each storage compartment of the refrigerator main body 1 is closed by a door that employs the same heat insulating structure as that of the refrigerator main body 1 . Each door can be opened and closed freely. In the refrigerator 50 , among these doors, the double door 6 closes the refrigerator compartment 14 .

[1-1-2. Configuration of double doors]
Next, the double door 6 will be described.
As shown in FIG. 1, the double door 6 closing the refrigerator compartment 14 consists of a first door 6A and a second door 6B. The first door 6A and the second door 6B are rotatably supported by door hinges in the front opening 1A of the refrigerator body 1, respectively.

FIG. 2 is a perspective view showing the first door 6A.
As shown in FIG. 2, the first door 6A includes an inner door frame 21 made of resin, an outer peripheral door frame 22 made of resin, an exterior plate 23, and a rotating partition 7. As shown in FIG.
The door inner frame 21 is a rectangular panel-shaped member arranged facing the storage compartment of the refrigerator main body 1 in the first door 6A.

The exterior plate 23 is a rectangular plate-shaped member disposed facing the door inner frame 21 in the first door 6A, and the exterior plate 23 forms the outer surfaces of the first door 6A and the refrigerator 50. . This exterior plate 23 is formed of, for example, a glass plate.

The door outer frame 22 is a member formed in a rectangular frame shape. Each edge of the door inner frame 21 and each edge of the exterior plate 23 are connected to each other by the door outer frame 22 . Therefore, the door outer frame 22 forms the top surface, bottom surface, and both side surfaces of the first door 6A.

Thus, the first door 6A is formed in a box shape as a whole. The space inside the first door 6A surrounded by the door inner frame 21, the door outer frame 22, and the exterior plate 23 is filled with a door foam insulation material such as hard urethane foam.

FIG. 3 is a cross-sectional view of main parts of the double door 6 and the rotary partition 7 of the refrigerator 50. As shown in FIG. FIG. 3 is a sectional view of the double door 6 and the rotary partition 7 taken along the horizontal direction of the refrigerator 50. As shown in FIG.
As shown in FIG. 3 , a gasket 13</b>A is provided along the entire periphery of the door inner frame 21 on the surface of the inner frame 21 facing the refrigerator compartment 14 . This gasket 13A is a sealing member made of resin for sealing a gap between the first door 6A and the refrigerator main body 1 when the refrigerator compartment 14 is blocked by the first door 6A. A linear magnet is accommodated in a portion of the gasket 13A that extends along the side surface 8A located opposite to the side surface on which the first door 6A is pivotally supported.

A side surface 8A of the door outer frame 22 is formed in a flat plate shape. Both edges extending along the longitudinal direction of the side surface 8A are provided with a A plate-shaped door outer peripheral frame flange portion 24 extending with a predetermined width dimension is provided.

Further, in the door peripheral frame 22, the heat transport means 11 is provided on the door peripheral frame inner side 10, which is the surface positioned on the space portion side inside the first door 6A of the side surface 8A. The heat transport means 11 is formed of a sheet having a high thermal conductivity such as a graphite sheet or an aluminum sheet.
In this embodiment, the heat transport means 11 is provided along the entire length of the side surface 8A. The heat transport means 11 is held so that both edges located in the width direction are sandwiched between the pair of door outer peripheral frame flange portions 24 from both edges located in the width direction of the heat transport means 11 .

In the door inner frame 21, a rotary partition 7 is provided on the edge located on the side 8A side. The rotary partition 7 is a strip-shaped elongated member extending along the longitudinal direction of the side surface 8A of the first door 6A.
Both upper and lower ends of the rotary partition 7 are pivotally supported by the inner door frame 21 of the first door 6A by means of hinge members 25. As shown in FIG. The rotary partition 7 rotates in conjunction with the opening and closing of the first door 6A.

The rotary partition 7 is formed in a flat box shape having a space inside. Inside the rotary partition 7, a pair of linear magnets extending along the vertical direction of the rotary partition 7 and a dew condensation prevention heater 9 are housed.
The dew condensation prevention heater 9 generates heat when electric power is supplied, and heats the rotary partition 7 to prevent dew condensation and freezing. In the present embodiment, the dew condensation prevention heater 9 is formed in a linear shape and arranged in a loop over the entire vertical direction of the rotary partition 7 .
Further, the inside of the rotary partition 7 is filled with foamed heat insulating material such as rigid urethane foam.

The second door 6B is formed so as to have a symmetrical shape in a mirror image relationship with the first door 6A when the refrigerator 50 is viewed from the front. Like the first door 6A, the second door 6B includes a resin door inner frame 21, a resin door outer frame 22, and an exterior plate 23, and the rotary partition 7 is omitted.

The second door 6B has a side surface 8B positioned opposite to the side surface on which the second door 6B is pivotally supported. The side surface 8B is formed in substantially the same shape as the side surface 8A of the first door 6A.

Further, the second door 6B is provided with a heat transport means 11 on the inner side 10 of the door peripheral frame 22, which is the surface located on the side of the space inside the first door 6A of the side surface 8A. . The heat transport means 11 is formed of a sheet having a high thermal conductivity such as a graphite sheet or an aluminum sheet.
In this embodiment, the heat transport means 11 is provided along the entire length of the side surface 8A. The heat transport means 11 is held so that both edges located in the width direction are sandwiched between the pair of door outer peripheral frame flange portions 24 from both edges located in the width direction of the heat transport means 11 .

[1-2. action]
The operation and function of the refrigerator 50 of the first embodiment configured as described above will be described below.
In refrigerator 50, when first door 6A and second door 6B are closed, side surface 8A and side surface 8B are arranged to face each other.
Further, the rotary partition 7 rotates and abuts on the gasket 13A provided on the first door 6A and the gasket 13B provided on the second door 6B at locations near the side surfaces 8A and 8B. Furthermore, the magnets housed inside the rotary partition 7 and the magnets housed inside the gaskets 13A and 13B are attracted to each other by magnetic force, so that the rotary partition 7 comes into close contact with the gaskets 13A and 13B. Thereby, the gap between the rotary partition 7 and the first door 6A and the second door 6B is sealed.

As described above, the heat transport means 11 is provided on the inner side 10 of the outer peripheral frame of the first door 6A and the second door 6B. In a state where the first door 6A and the second door 6B are closed, the heat transport means 11 is positioned on the outer periphery of each door, which is a portion close to each door inner frame 21 provided on the first door 6A and the second door 6B. By extending to the vicinity of the frame 12, it is possible to transport the heat of the installation outside air of the refrigerator main body 1 to the gaskets 13A and 13B. As a result, the input to the dew condensation prevention heater 9 can be reduced in the refrigerator 50 .

[1-3. effects, etc.]
As described above, refrigerator 50 of the present embodiment includes refrigerator main body 1 having refrigerating chamber 14 (storage chamber), double-opening first door 6A, and second door 6B. In the refrigerator main body 1, a first door 6A and a second door 6B are rotatably supported on one side and the opposite side of the front opening 1A of the refrigerating chamber 14, respectively.

Refrigerator 50 includes heat transport means 11 that transports outside air heat to the inside of side surfaces 8 facing each other when first door 6A and second door 6B are closed.
As a result, the heat of the high-temperature outside air outside the refrigerator 50 can be transported to the low-temperature part inside the refrigerating chamber 14 on the side surface 8, so condensation on the rotary partition 7 and the gaskets 13A and 13B can be suppressed. . Also, in the refrigerator 50, the power input to the dew condensation prevention heater 9 can be reduced.

Furthermore, the refrigerator 50 includes a door outer peripheral frame flange portion 24 that holds the heat transport means 11 on the side surface 8 facing the first door 6A and the second door 6B when the first door 6A and the second door 6B are closed.
As a result, the ends of the gaskets 13A and 13B that prevent cool air leakage can be efficiently heated. In addition, part of the heat of the heat transporting means 11 is transmitted to the refrigerator compartment 14 via the rotary partition 7 that closes the gap between the side surfaces 8A and 8B of the first door 6A and the second door 6B. can be suppressed.

As in the present embodiment, the high thermal conductivity sheet that forms the heat transport means 11 may be a graphite sheet. Thereby, the heat transport means 11 is made of a material having anisotropic heat conduction properties. Therefore, the heat transport means 11 can transport the heat of the outside air to the inside of the side surface 8 more efficiently.

As in the present embodiment, the high thermal conductivity sheet forming the heat transport means 11 may be an aluminum sheet. As a result, the heat transport means 11 is made of a material with excellent flexibility and workability. Therefore, in the refrigerator 50, the heat transport means 11 can be formed at a lower cost.

(Embodiment 2)
Embodiment 2 will be described below with reference to FIG.
[2-1. composition]
FIG. 4 is a perspective view of refrigerator 50 according to the second embodiment. In FIG. 4, the same parts as those in FIG. 1 are assigned the same reference numerals, and the description thereof is omitted.
In Embodiment 1 described above, the heat transport means 11 is provided over the entire longitudinal direction of the side surfaces 8A and 8B. On the other hand, in the present embodiment, the heat transport means 11 is provided only partially in the longitudinal direction of each of the side surfaces 8A and 8B.

More specifically, as shown in FIG. 4, the first door 6A and the second door 6B are provided with heat only in a range overlapping a region R surrounded by a rectangular dotted line in the longitudinal direction of each of the side surfaces 8A and 8B. A transport means 11 is provided and omitted in other areas.

[2-2. motion]
The operation and function of the refrigerator of the second embodiment configured as described above will be described below.
In the refrigerator 50, in the longitudinal direction (vertical direction) of the double door 6, the temperature near the bottom is lower than the temperature near the top due to the flow of air inside the refrigerator, so the temperature distribution on the side surface 8 tends to be uneven.
That is, as shown in FIG. 4, in the longitudinal direction of the double door 6, the temperature in the region overlapping the area R is lower than in the vicinity of the upper portion due to the air flow in the chamber, so the temperature distribution on the side surface 8 is uneven. Prone.

In the present embodiment, the heat transport means 11 is provided only in the range overlapping with the region R, which is the coldest part in the longitudinal direction of the double door 6, so that the temperature becomes uniform. Therefore, in the present embodiment, compared with the first embodiment, the heat transporting means 11 can be provided at a lower cost, and the input to the dew condensation prevention heater 9 can be reduced.

[2-3. effects, etc.]
As described above, in the refrigerator 50 of the second embodiment, the sheets having high thermal conductivity are provided only at the lowest temperature portions of the facing side surfaces 8A and 8B of the pair of the first door 6A and the second door 6B. It is
In this way, in the refrigerator 50, the temperature distribution in the longitudinal direction of the side surface 8 can be made uniform by providing the heat transfer means only in the coldest part of the side surface 8 of the double door 6. Since the electric power input to the dew condensation prevention heater 9 is given a value that prevents dew condensation from occurring in the coldest part, in the refrigerator 50, the input to the dew condensation prevention heater 9 can be reduced.

(Other embodiments)
As described above, Embodiments 1 and 2 have been described as examples of the technology disclosed in the present application. However, the technology in the present disclosure is not limited to this, and can also be applied to embodiments with modifications, replacements, additions, omissions, and the like. Also, it is possible to combine the constituent elements described in the first and second embodiments to form a new embodiment.

Note that the above-described embodiment is for illustrating the technology in the present disclosure, and various changes, replacements, additions, omissions, etc. can be made within the scope of the claims or equivalents thereof.

According to the present disclosure, the dew condensation on the rotating partition is suppressed by the heat of the outside air conveyed by the heat transport means, thereby reducing the input to the dew condensation prevention heater and improving the energy saving performance. It can be applied to refrigerators of various types and sizes, such as those for domestic use and commercial use.

1 Refrigerator body 1A Front opening 6 Double door 6A First door 6B Second door 7 Rotating partition 8, 8A, 8B Side (surface)
9 Condensation prevention heater 10 Inside of door outer frame 11 Heat transport means 12 Near door outer frame 13A Gasket 13B Gasket 14 Refrigerator compartment 21 Door inner frame 22 Door outer frame 23 Exterior plate 24 Door outer frame flange 50 Refrigerator R Area S Space

Claims (4)

a refrigerator body having a storage compartment;
A double-door first door provided on one side of the front opening of the storage room;
A second double door provided on the opposite side of the front opening of the storage room,
In the refrigerator in which the first door and the second door are rotatably supported,
A refrigerator comprising a sheet having a high thermal conductivity for conveying heat of outside air to surfaces facing each other when the first door and the second door are closed. 2. The refrigerator according to claim 1, wherein the sheet having high thermal conductivity is provided at a portion of the surfaces facing each other when the first door and the second door are closed, where the temperature is the lowest. The refrigerator according to claim 1 or 2, wherein the sheet having high thermal conductivity is a graphite sheet. The refrigerator according to claim 1 or 2, wherein the sheet having high thermal conductivity is an aluminum sheet.

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