WO2014013636A1

WO2014013636A1 - Refrigerator

Info

Publication number: WO2014013636A1
Application number: PCT/JP2013/000829
Authority: WO
Inventors: 勝久天生; 利幸近藤; 正俊佐藤
Original assignee: 株式会社東芝; 東芝コンシューマエレクトロニクス・ホールディングス株式会社; 東芝ホームアプライアンス株式会社
Priority date: 2012-07-19
Filing date: 2013-02-15
Publication date: 2014-01-23
Also published as: RU2603888C2; CN104380015A; CN104380015B; RU2015105587A; IN2014DN11135A; JP2014020680A

Abstract

A refrigerator of one embodiment is provided with a machine chamber. The machine chamber is disposed on the bottom of a cabinet towards the rear surface, and the front and rear sides of the machine chamber are separated from the cabinet by means of a front wall. A condenser is disposed within the machine chamber towards the back relative to the front wall with a space between the condenser and the front wall. A heat dissipation fan is disposed behind the condenser so as to face the condenser. An air inlet part is disposed on a bottom part, which partitions the bottom surface of the machine chamber, below the space formed by the front wall and the condenser and brings the machine chamber into communication with the outside.

Description

refrigerator

Citation of related application

This application is based on and seeks the benefit of priority based on Japanese Patent Application No. 2012-160212 filed on July 19, 2012, the entire contents of which are incorporated herein by reference. Is done.

The embodiments described herein generally relate to refrigerators.

In a refrigerator, as shown in, for example, Japanese Patent Application Laid-Open No. 2011-231948, a machine in which a compressor and a condenser forming a refrigeration cycle and a heat dissipating fan for cooling the compressor and the condenser are formed in the lower part on the back side of the cabinet. It is arranged indoors. Power consumption of the refrigerator is reduced by increasing the heat dissipation efficiency of the condenser by the heat dissipation fan.

However, due to the recent increase in environmental awareness, there is a strong demand for further power saving, and further improvement in the heat dissipation efficiency of the condenser is desired.

JP 2011-231948 A

The embodiment of the present invention has been made in consideration of the above circumstances, and provides a refrigerator capable of improving power dissipation efficiency of a condenser disposed in a machine room to save power.

The refrigerator of the embodiment includes a cabinet having a storage space, a cooler, a machine room, a compressor, a condenser, a heat radiating fan, and an air inlet. The machine room is provided in a lower part on the back side of the cabinet. The cooler is provided in the cabinet. The machine room is partitioned from the cabinet by a front wall on the front and rear sides. The compressor is provided in the machine room and supplies a refrigerant to the condenser.

The condenser is disposed in the machine room at a distance from the front wall to the rear, condenses the refrigerant supplied from the compressor, and supplies the condensed refrigerant to the cooler. The heat dissipating fan is disposed behind the condenser so as to face the condenser. The air inlet portion is provided in a bottom portion that divides the bottom surface of the machine room below a space sandwiched between the front wall and the condenser, and communicates the machine room with the outside.

It is sectional drawing of the refrigerator which concerns on 1st Embodiment. It is a figure which shows the refrigerating cycle of the refrigerator of FIG. It is a front view of the condenser of the refrigerator of FIG. It is an expanded sectional view of the machine room of the refrigerator of FIG. It is an expanded sectional view of the machine room of the refrigerator concerning a 2nd embodiment. It is an expanded sectional view of the machine room of the refrigerator concerning a 3rd embodiment.

Hereinafter, a plurality of embodiments of the present invention will be described with reference to the drawings. In the drawings, the same reference numerals indicate the same or similar parts.

Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 to 4.

The refrigerator 10 according to the present embodiment includes a cabinet 16 provided with a heat insulating space 13 between an outer box 12 made of a steel plate and an inner box 14 forming a storage space, as shown in FIG.

The storage space formed inside the inner box 14 is divided into an upper refrigeration space 20 and a lower refrigeration space 40 by a heat insulating partition wall 17.

The refrigerated space 20 is a space cooled to a refrigeration temperature (for example, 2 to 3 ° C.). The interior of the refrigerated space 20 is further divided vertically by a partition wall 21. By this section, a refrigerator compartment 22 provided with a plurality of stages of mounting shelves is provided above the partition wall 21. Further, below the partition wall 21, there is provided a vegetable room 24 for storing a drawer-type storage container 26.

The freezing space 40 disposed below the vegetable compartment 24 via the heat insulating partition wall 17 is a space cooled to a freezing temperature (for example, −18 ° C. or lower). In the freezing space 40, an ice making room 42 equipped with an automatic ice making machine and a small freezing room (not shown in FIG. 1) are provided on the left and right. In the freezing space 40, a freezing room 46 is provided below the ice making room 42 and the small freezing room.

In the rear part of the refrigeration space 20, a refrigeration cooler 52 that cools the air in the refrigeration space 20, and refrigeration for blowing the cold air cooled by the refrigeration cooler 52 to the refrigeration chamber 22 and the vegetable compartment 24. A blower fan 53 is provided. Further, at the rear of the freezing space 40, a freezing cooler 54 that cools the air in the freezing space 40, and the cold air cooled by the freezing cooler 54, the ice making chamber 42 and the small freezing chamber A refrigeration blower fan 55 for blowing air to the freezer compartment 46 is provided.

The refrigeration cooler 52 and the refrigeration cooler 54 include a compressor 51 housed in a machine room 19 provided in a lower part on the back side of the cabinet 16 and a condenser 56 shown in FIGS. 1) and the refrigeration cycle 50 is configured.

As shown in FIG. 2, the refrigeration cycle 50 includes a compressor 51, a condenser 56, a switching valve 57, a refrigeration cooler 52, a refrigeration cooler 54, a refrigeration decompression device 58, a refrigeration decompression device 59, and the reverse A stop valve 60 is provided. The compressor 51 discharges a high-temperature and high-pressure gaseous refrigerant. The condenser 56 receives the gaseous refrigerant discharged from the compressor 51 and liquefies the heat, and the switching valve 57 is provided on the outlet side of the condenser 56 to switch the refrigerant flow path. The refrigeration decompression device 58 and the refrigeration decompression device 59 function as throttle means for the refrigeration cooler 52 and the refrigeration cooler 54, respectively. By connecting these devices with refrigerant pipes, the refrigerant discharged from the compressor 51 is circulated to cool the refrigeration cooler 52 and the refrigeration cooler 54.

In the refrigerator 10 having the above-described configuration, the machine room 19 includes a ceiling surface 61, a compressor base 62, a front wall 63, left and right side walls (not shown in FIG. 1), and a back plate 66, as shown in FIG. In the lower part on the back side of the cabinet 16, it is partitioned and formed. The compressor base 62 constitutes a bottom portion that partitions the bottom surface of the machine room 19. The front wall 63 separates the back surface of the freezer compartment 46 from the machine room 19 and is inclined upward toward the rear. The back plate 66 is detachably attached to the cabinet 16. The ceiling surface 61 and the front wall 63 are integrally formed by a bottom plate 67 of the cabinet 16.

The compressor 51 is mounted on the compressor base 62 via a vibration isolating rubber on one side in the width direction of the machine room 19, for example, on the left side when viewed from the back side of the machine room 19. A fan unit 70 shown in FIG. 2 is disposed on the other side of the machine room 19 in the width direction, for example, on the right side of the machine room 19 when viewed from the back side. The fan unit 70 is provided with a heat radiating fan 68 composed of an axial fan for cooling the compressor 51 and the condenser 56. Further, an evaporating dish 72 for evaporating the defrost water generated from the refrigeration cooler 52 and the refrigeration cooler 54 is formed in the compressor base 62 below the fan unit 70.

As shown in FIG. 3, the condenser 56 is a fin-tube condenser including an aluminum-made refrigerant tube 56a through which refrigerant flows and a plurality of plate-like heat radiation fins 56b provided in the refrigerant tube 56a. The refrigerant tube 56a is disposed from the upper part to the lower part of the machine room 19 while meandering left and right. The refrigerant discharged from the compressor 51 flows into the refrigerant tube 56a from the upper part of the condenser 56, and flows to the lower part of the condenser 56 while meandering left and right. The plurality of plate-like heat radiation fins 56b are attached to the refrigerant tube 56a in parallel to each other with a predetermined interval L (for example, L = 5 mm or less), and the overall shape of the condenser 56 is in the vertical direction. In addition, it has a flat, substantially rectangular parallelepiped shape that is shorter in the front-rear direction than in the left-right direction.

As shown in FIG. 4, the condenser 56 has a front wall so that the heat dissipating fins 56 b are parallel to the front-rear direction of the machine room 19 while matching the front-rear direction with a relatively short dimension to the front-rear direction of the machine room 19. It is arranged in the machine room 19 with a space from 63 to the rear. With such an arrangement, a space S is formed between the condenser 56 and the front wall 63 so as to cover the entire height of the machine room 19 (that is, from the bottom surface of the machine room 19 to the ceiling surface 61). This space S communicates with the outside of the machine room 19 through an air inlet 64 formed in the compressor base 62.

The fan unit 70 includes a unit rear surface portion 74 with a circular bell mouth 73 opened, and a unit side surface portion 75 extending forward from a lower edge portion and left and right side edge portions of the unit rear surface portion 74. Inside the bell mouth 73 of the fan unit 70, the heat dissipating fan 68 composed of the axial fan is disposed. The suction port of the heat radiating fan 68 is provided in front.

The fan unit 70 is fixed behind the condenser 56 in the machine room 19.

The heat radiating fan 68 is disposed opposite to the condenser 56 at a distance from the rear surface 56 c of the condenser 56 so that the rotating shaft 68 a of the heat radiating fan 68 is along the vertical direction of the rear surface 56 c of the condenser 56.

In the refrigerator 10 having such a configuration, the compressor 51 is driven to start the operation of the refrigeration cycle 50 and the heat dissipating fan 68 is rotated so that the gaseous refrigerant discharged from the compressor 51 is discharged in the condenser 56. Cool with heat dissipation.

Specifically, when the heat radiating fan 68 rotates, as shown in FIG. 4, the air below the machine room 19 is an air inlet provided below the space S sandwiched between the condenser 56 and the front wall 63. The portion 64 is taken into the space S. The air taken into the space S from the outside of the machine room 19 spreads in the space S and flows in the front-rear direction having a short dimension in the condenser 56 while exchanging heat with the radiating fins 56 b, and is sucked into the suction port of the radiating fan 68. Then, it is discharged to the rear of the heat dissipation fan 68.

As described above, in the refrigerator 10 of the present embodiment, the space S that communicates with the outside of the machine room 19 via the air inlet 64 is provided in front of the condenser 56. Therefore, since the air inflow area of the condenser 56 can be increased, air that has not been heat exchanged with the condenser 56 taken from the outside of the machine room 19 can be blown to a wide area of the condenser 56, Heat dissipation efficiency can be improved. Furthermore, since the air inflow area of the condenser 56 can be increased, the pressure loss of the air passing through the condenser 56 can be suppressed, and the heat radiation efficiency of the condenser 56 can be increased by increasing the amount of air exchanged with the condenser 56. Can be improved.

In the present embodiment, the rotation shaft 68a of the heat radiating fan 68 is arranged along the vertical direction of the rear surface 56c of the condenser 56. Therefore, since the air generated by the heat radiating fan 68 flows in parallel to the heat radiating fins 56b, the pressure loss of the air passing through the condenser 56 can be further suppressed.

In addition, in this embodiment, since the pressure loss in the condenser 56 is small, a sufficient air flow rate can be ensured even if the interval between the radiation fins 56b is reduced to, for example, 5 mm or less, and the heat radiation efficiency is further improved. Can be improved.

Next, a second embodiment will be described with reference to FIG.

This embodiment differs from the first embodiment described above in that the space S sandwiched between the condenser 56 and the front wall 63 is partitioned vertically by the partition member 76.

More specifically, as shown in FIG. 5, the partition member 76 has a plate shape that extends in a direction that becomes higher toward the rear from a position where the air inlet portion 64 provided in the compressor base 62 is divided forward and backward. The partition member 76 is disposed substantially parallel to the front wall 63 with a gap in the rearward direction.

The space S sandwiched between the condenser 56 and the front wall 63 by such a partition member 76 is divided into an upper space S1 formed above the partition member 76 and a lower space S2 formed below the partition member 76. It is partitioned. One end of the upper space S <b> 1 communicates with the outside of the machine room 19 through the air inlet 64, and the other end of the upper space S <b> 1 opens at a position facing the upper portion of the condenser 56. One end of the lower space S <b> 2 communicates with the outside of the machine chamber 19 through the air inlet 64, and the other end of the lower space S <b> 2 opens at a position facing the lower portion of the condenser 56.

As shown in FIG. 5, since the condenser 56 is inclined with respect to the front wall 63, the widths of the two portions of the space S formed in front of the upper part and the lower part of the condenser 56 are different. . Even with such a structure, in the present embodiment, the air outside the machine chamber 19 taken in from the air inlet 64 can be uniformly blown to the upper and lower portions of the condenser 56, and the entire condenser 56 is effectively used. The heat dissipation efficiency can be improved by heat dissipation.

Next, a third embodiment will be described with reference to FIG.

In the first embodiment described above, the rotation shaft 68 a of the heat radiating fan 68 is arranged along the vertical direction of the rear surface 56 c of the condenser 56, and the rectangular parallelepiped condenser 56 is arranged so as to be inclined with respect to the front wall 63. is doing. In the present embodiment, as shown in FIG. 6, a condenser 56 is disposed in parallel with the front wall 63.

According to this embodiment, the widths of the two portions of the space S formed in front of the upper portion and the lower portion of the condenser 56 are substantially the same. Therefore, the air outside the machine chamber 19 taken in from the air inlet 64 can be uniformly blown to the upper and lower portions of the condenser 56, respectively, and the entire condenser 56 can be effectively dissipated, Heat dissipation efficiency can be improved.

The above-described plurality of embodiments are presented as examples, and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

10 ... Refrigerator
16 ... Cabinet 19 ... Machine room 20 ... Refrigerated space
22 ... Refrigerator room
24 ... Vegetable room 40 ... Frozen space
42 ... Ice making room
46 ... Freezer room 50 ... Refrigeration cycle
51 ... Compressor
56 ... Condenser 56a ... Refrigerant tube
56b ... Radiating fin
56c ... Rear 57 ... Switching valve
61 ... Ceiling surface
62 ... Compressor stand 63 ... Front wall
64 ... Air inlet
66 ... Back plate 67 ... Bottom plate
68 ... Heat dissipation fan
68a ... rotating shaft 70 ... fan unit
72 ... Evaporation dish
73 ... Bell mouth 74 ... Rear side of unit
75 ... Unit side surface
76: Partition member S: Space
S1… Upper space
S2 ... Lower space

Claims

A refrigerator,
A cabinet having a storage space;
A cooler provided in the cabinet;
A machine room provided in a lower part on the back side of the cabinet, wherein the cabinet is a machine room whose front and rear sides are partitioned by a front wall;
A compressor provided in the machine room and supplying a refrigerant to the condenser;
A condenser that is disposed in the machine room at a distance from the front wall to the rear, condenses the refrigerant supplied from the compressor, and supplies the refrigerant to the cooler;
A heat dissipating fan arranged to face the condenser behind the condenser;
An air inlet portion provided in a bottom portion that partitions the bottom surface of the machine room below a space sandwiched between the front wall and the condenser, and an air inlet portion that communicates the machine chamber with the outside.
The refrigerator according to claim 1, wherein a rotating shaft of the heat dissipating fan is arranged in a direction perpendicular to a facing surface facing the heat dissipating fan in the condenser.
Furthermore, a partition member that vertically divides a space sandwiched between the front wall and the condenser is provided,
The refrigerator according to claim 1, wherein a space defined above the partition member and a space defined below the partition member communicate with the outside of the machine room via the air inlet portion.
Furthermore, a partition member for vertically dividing a space sandwiched between the chamber front wall and the condenser is provided,
The refrigerator according to claim 2, wherein a space partitioned above the partition member and a space partitioned below the partition member communicate with the outside of the machine room via the air inlet portion.
The refrigerator according to claim 1, wherein the condenser is disposed in parallel with the front wall.
The said condenser is provided with the refrigerant | coolant tube into which a refrigerant | coolant flows, and the several plate-shaped radiation fin provided in parallel with each other along the said refrigerant | coolant tube, The space | interval of the said radiation fin is 5 mm or less. The refrigerator according to any one of 5.
The refrigerator according to claim 6, wherein the refrigerant tube is disposed from the upper part to the lower part of the machine room while meandering from side to side.
The refrigerator according to any one of claims 1 to 5, wherein the bottom portion is constituted by a compressor base.
The refrigerator according to any one of claims 1 to 5, wherein the machine room is formed by the front wall, the bottom, a ceiling surface, left and right side walls, and a back plate.
The refrigerator according to any one of claims 1 to 5, wherein at least one of a refrigerated space and a frozen space is provided in the storage space.