JP2003130531A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve heat radiating performance of a compressor and a condenser, and to reduce electric power consumption by excellently performing ventilation to a machine room via an opening hole of a machine room side surface even if clearance with an adjacent object wall surface is arranged in a narrow state in a refrigerator. SOLUTION: The condenser 4, an air blower 5, and the compressor 6 are arranged in the machine room 2 arranged in a back face lower corner part of a refrigerator body 1. The air blower 5 is arranged so as to ventilate the condenser 4 and the compressor 6. A recessed part 9a recessed to the machine room inner side, and communicating with a refrigerator bottom surface side space is formed on a side face plate 9 positioned on the suction side of the air blower 5. The opening hole 9b is formed in this recessed part 9a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator, and more particularly to a refrigerator in which a compressor, a condenser, and a blower for ventilating the compressor and the condenser are arranged in a machine room.

[0002]

2. Description of the Related Art A conventional refrigerator is disclosed in Japanese Unexamined Patent Publication No. 8-28.
There is one disclosed in Japanese Patent No. 5439. This refrigerator has the following words when describing the embodiments of the present invention:
A machine room provided at the lower corner of the back of the refrigerator body, a compressor provided in the machine room, a condenser provided in the machine room, a compressor provided in the machine room, and a compressor and a condenser provided in the machine room. An air blower for ventilation is provided, and opening holes for air intake and air discharge are formed on both side surfaces of the machine room. And
The opening hole is formed only on both side surfaces of the machine room, and one or more opening holes are formed. By operating the blower, external air is sucked in through the opening on one side, this air is discharged from the blower to the condenser and compressor to cool, and then the hot air is discharged to the outside through the opening on the other side. It is supposed to do.

[0003]

In the above-mentioned conventional refrigerator, the ventilation in the machine room can be satisfactorily performed through the opening holes on the side surfaces of the machine room, but the opening holes on both side surfaces of the machine room are flush with the side surfaces of the refrigerator body. Since it is on the upper side, when the refrigerator is installed in a state where the adjacent object wall surfaces are close to each other on both sides of the refrigerator, the size of the gap between the opening hole and the adjacent object wall surface becomes small and the ventilation resistance increases. As a result, it becomes difficult for air to be sucked into the air suction opening hole from the periphery of the opening portion, and it becomes difficult to discharge warm air from the other discharge opening hole. Therefore, there is a problem that the heat radiation performance of the compressor and the condenser is significantly reduced by suppressing the amount of air supplied into the machine room. In this case, the pressure loss in the ventilation passage due to the blower increases, the load on the blower increases, and the blower output increases, so there is a problem that the power consumption of the refrigerator increases. Then, even when the operation of the compressor and the blower is stopped and the heat is radiated from the compressor and the condenser by natural convection ventilation, the ventilation resistance is suppressed by the increase of the ventilation resistance, and the compressor and the blower are controlled. However, there is a problem in that the temperature is increased and the reliability is reduced.

Further, in the above-mentioned conventional refrigerator, it is described that the rigidity of the side plate is improved by forming the opening hole with a plurality of holes. The plurality of openings are provided on the flat surface of the side plate. Since it is simply opened, the rigidity of the side plate is unavoidable due to the provision of the opening hole, and there is a problem that it is difficult to secure the reliability of the strength of the refrigerator body.

Further, in the conventional refrigerator, since the condenser is arranged on the discharge side of the blower, when a cross fin type heat exchanger having a narrow fin pitch is adopted as the condenser, ventilation resistance is remarkable. Will lead to an increase. Therefore, it is difficult to increase the heat dissipation area by using a cross fin type heat exchanger with a narrow fin pitch, and it is difficult to remove the condenser embedded in the refrigerator body and concentrate it only on the condenser in the machine room. was there.

A first object of the present invention is to allow good ventilation to the machine room through an opening hole on the side surface of the machine room, and to provide a side surface of the machine room even if the space between adjacent machine wall surfaces is narrow. An object of the present invention is to provide a refrigerator in which good ventilation can be performed to the machine room through the opening hole, and the heat dissipation performance of the compressor and the condenser can be improved to reduce power consumption.

A second object of the present invention is to provide a refrigerator in which the resistance of the ventilation passage in the machine room is reduced, the power consumption of the refrigerator can be reduced, and sufficient cooling performance can be secured even under high load. .

[0008]

[Means for Solving the Problems] A first means of the present invention for achieving the above-mentioned first object is a machine room provided at a lower corner of a rear surface of a refrigerator body, and a machine room provided in the machine room. In a refrigerator provided with a compressor and a condenser, and a blower arranged in the machine room and ventilating the compressor and the condenser, the blower is installed so as to ventilate in the left and right direction in the machine room. The side plate located on the blower suction side of the machine room is formed with a recessed part that is recessed toward the inside of the machine room and communicates with the space on the bottom surface of the refrigerator, and an opening hole is formed in this recessed part.

The second means of the present invention for achieving the above-mentioned second object is to provide a machine room provided at a lower corner of the back surface of the refrigerator body, a compressor provided in the machine room, and In a refrigerator equipped with a condenser and a blower arranged in the machine room and ventilating the compressor and the condenser, a suction port and a blowout port are provided on the left and right side plates forming both side plates of the machine room of the refrigerator. And a compressor, a blower, and a condenser between the side plates, so that the air that has exchanged heat between the condenser and the compressor is in a straight line between the inlet and the outlet. The air conditioner, the blower, and the compressor are provided, and the suction port and the blowout port are provided on the inner side of the machine room with respect to both side plates.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Each embodiment of the present invention will be described below with reference to the drawings.

First, a first embodiment of the present invention will be described with reference to FIGS. 1 to 7.

First, the overall structure of this embodiment and the operation including the flow of air will be described with reference to FIGS. 1 to 5. 1 is a rear perspective view showing a machine room of a refrigerator according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view including a machine room of the refrigerator of FIG. 1, and FIG. 3 is a machine of the refrigerator of FIG. FIG. 4 is a perspective view of a rear main part showing the chamber in a comparison view from a different direction, FIG. 4 is a refrigeration cycle diagram of the refrigerator of FIG. 1, and FIG. 5 is a perspective view of a single condenser used in the refrigerator of FIG. The arrows in FIGS. 2 and 3 indicate the flow of air, and the arrows in FIG. 4 indicate the flow of refrigerant.

As shown in FIGS. 1 and 2, the refrigerator main body 1 includes an outer box 21 including a ceiling plate 12 which forms an outer surface, side plates 9, 10, a rear plate 8, a main body bottom plate 3, and a storage chamber 22. And an insulating material 24 such as a heat insulating urethane foam filled between the outer box 21 and the inner box 23. The outer box 21 is made of a metal plate such as a steel plate, and the inner box 23 is made of a synthetic resin such as ABS resin.
On the front surface of the refrigerator body 1, a plurality of doors 25 and 26 for opening and closing the plurality of storage chambers 22 are provided.

The machine room 2 is located at the lower corner of the back of the main body,
It is configured to be surrounded by a main body bottom plate 3, a base 7 on which a compressor 6, a blower 5 and a condenser 4 are mounted, a machine chamber cover 8 that covers the back surface, and refrigerator side plates 9 and 10 that form both side surfaces. ing. The machine room 2 is horizontally long over the entire width of the refrigerator main body 1 and is a space closed except for the opening holes 9b and 10b and the opening slits 8a and 8b. On the base 7, the condenser 4, the blower 5, and the compressor 6 are arranged in this order in the longitudinal direction (left-right direction) of the machine room 2.

The base 7 is fixed to the lower surfaces of the side plates 9 and 10 with screws or bolts. Legs 27 and 28 are attached to the base 7 and the main body bottom plate 3, and a gap is formed between the base 7 and the floor surface 29 (see FIG. 7) by the legs 27 and 28. The rear part of the refrigerator body 1 is connected to the base 7 and the side plates 9, 10 by the legs 27.
The front portion of the refrigerator main body 1 is supported by the legs 28 via the main body bottom plate 3.

As shown in FIG. 4, the refrigeration cycle in this embodiment includes a compressor 6, a condenser 4, and a dew prevention pipe 3.
0, the capillary tube 31, the evaporator 32, and the compressor 6 are connected in this order. In this refrigeration cycle, the embedded condenser that is generally used in the past is deleted, and the condenser 4 is integrated in the condenser 4 in the machine room. This makes it possible to make the refrigerator inexpensive and highly recyclable. The main reason why the condenser can be integrated in the condenser 4 in the machine room is that, as will be described later, an opening hole is formed in the side surface to allow good ventilation into the machine room, and a cross fin type heat exchanger. Is adopted for the condenser 4 and the heat transfer area is remarkably increased.

As shown in FIG. 5, the condenser 4 is composed of a cross fin type heat exchanger in which a large number of flat plate-shaped heat radiation fins 34 are provided in a meandering refrigerant pipe 33 at a narrow pitch. As a result, although the ventilation resistance of the condenser 4 is increased, a large heat radiation area can be secured. The pitch of the condenser 4 is 1.5 mm in this embodiment, and the fin pitch range is preferably 1.3 mm to 1.8 mm. The dew condensation prevention heat radiation pipe 30 is used in the refrigerator body 1.
It is arranged between the outer box 21 and the heat insulating material 24 along the front opening of the outer box 21 to prevent the outer box 21 from being exposed to the front opening. In the illustrated example, the condenser 4 is formed in a rectangular shape as a whole, but may be formed in an L shape or the like. When the L-shaped condenser is adopted, it is preferable that the other side is opposed to the base 7 and the opening hole is formed in the base 7.

Thus, the refrigerant in the refrigeration cycle is compressed by the compressor 6, becomes high temperature and high pressure, reaches the condenser 4, and is radiated by the condenser 4, and then the dew condensation preventing heat radiating pipe 3
At 0, the front surface of the outer box is heated to prevent dew condensation, and the pressure is reduced by the capillary 31 to reach the evaporator 32, where it is evaporated and heat is taken from the surroundings of the storage chamber 22, resulting in a low temperature and low pressure state. The cooling operation is performed by returning to the compressor 6 and repeating this process.

As shown in FIGS. 1 and 2, the compressor 6 and the condenser 4 are arranged on the left and right sides of the machine room 2 and face the side plates 9 and 10 on both sides of the machine room 2. There is. The partition plate 13 divides the inside of the machine room 2 into right and left,
It is arranged between the condenser 4 and the compressor 6. A circular hole is formed in the center of the partition plate 13, and the fan 5a of the blower 5 is arranged in the circular hole. Blower 5
Is provided with a fan 5a and a fan motor 5b, and is integrally incorporated in the partition plate 13. The blower 5 energizes the fan motor 5b to rotate the fan 5a, and thereby the air in the machine room 2 is ventilated in the left-right direction via the partition plate 13. The condenser 4 is arranged on the suction side of the blower 5, and the condenser 4 is cooled by the suction air of the blower 5. The compressor 6 is arranged on the discharge side of the blower 5, and the compressor 6 is cooled by the air discharged from the blower 5.

The evaporating dish 14 is provided above the compressor 6 and collects defrost water from the evaporator 32 in the refrigerator body 1. The defrost water stored in the evaporation dish 14 is evaporated by the heat of the compressor 6.

Ventilation step portions 17 and 18 through which air passes are formed on both sides of the rear surface of the refrigerator body 1. This ventilation step 1
7, 18 are formed so as to extend along a ridge line 16 where the side plates 9, 10 and the back plate 11 intersect, and are formed over the entire height of the refrigerator including the machine room cover 8.

In the portion of the side plates 9 and 10 that constitutes the machine room 2, a recess 9a having a lower opening 9d and 10d which is recessed inward of the machine room 2 and communicates with the space on the bottom surface of the refrigerator,
10a is formed by drawing. With this, base 7
Has a shape matching the recesses 9a and 10a of the side plates 9 and 10. Opening holes 9b, 10b are formed in the recesses 9a, 10a so as to face the condenser 4 and the compressor 6.
Is formed, and a flange portion 9c is formed around it. The upper end of the opening hole 10b has an opening hole 9b.
Is formed so as to be located above the upper end of the.

As described above, since the opening hole 9b is formed so as to face the condenser 4, a large amount of air can be easily supplied to the condenser 4 from the opening hole 9b. Thereby, even if a cross fin type heat exchanger having a large ventilation resistance is adopted as the condenser 4 of the machine room 2, it is possible to satisfactorily ventilate the air.

As described above, since the rigidity of the side plates 9 and 10 can be increased by forming the recesses 9a and 10a by drawing, it is possible to compensate for the decrease in rigidity due to the provision of the opening holes 9b and 10b. You can

A plurality of opening slits 8a and 8b are formed in the portion of the machine chamber cover 8 where the ventilation step portions 17 and 18 are formed. By operating the blower 5, the air and the ventilation step portion 1 under the refrigerator are passed through the opening slit 8a.
Air in the seven spaces is sucked, and the warmed air in the machine room 2 is discharged through the opening slit 8b. The discharged air rises in the space of the ventilation step 18 and is discharged to the outside of the refrigerator body 1.

Explaining the flow of air in the machine room 2,
By the rotation of the blower 5, the opening hole 9b and the opening slit 8
The air sucked from a is heat-exchanged with the condenser 4,
The heat is exchanged with the compressor 6 through the blower 5, and then discharged from the other discharge opening hole 10b and the opening slit 8b. Here, since air from the lower part of the refrigerator easily enters the suction opening 9b from the lower opening 9d of the recess 9a by the draft action, the machine chamber cover 8 is rotated when the blower 5 is rotated. A large amount of air enters along with the opening slit 8a, and the heat radiation amount of the condenser 4 and the compressor 6 in the machine room 2 can be secured.

Further, since the suction opening hole 9b of the recess 9a is provided so as to face the discharge opening hole 10b, the warm air that has exchanged heat with the machine room cover opening hole 8 is provided.
It is configured to be smoothly discharged to the outside of the refrigerator together with b. Therefore, the suction opening hole 9b through the discharge opening hole 1
Since the air passage to 0b is short and the pressure loss of the air passage in the machine room 2 is reduced, the suction load of the blower 5 is reduced, the output during blower operation is reduced, and the power consumption of the refrigerator can be suppressed. it can.

Next, the flow of air in the case where the refrigerator of this embodiment is installed in a state where it is narrowly shielded from the adjacent objects will be described with reference to FIGS. 6 and 7. FIG. 6 is a cross-sectional view including the machine room under the actual installation shielding condition of the refrigerator in FIG. 1, and FIG. 7 is a cross-sectional view taken along line AA in FIG. The arrows in FIGS. 6 and 7 indicate the flow of air.

The distance L1 between the side plates 9 and 10 and the adjacent object wall surfaces 35 and 36 is about 10 mm in the case of being narrow. Further, the drawing depth dimension L2 of the recessed portions 9a and 10a to the flange portion 9c is 10 mm to 15 mm. Therefore, the distance L3 between the flange portion 9c and the adjacent object wall surface 35 is equal to the distance L1.
And the drawing depth L2 are added together, and about 20 mm to 2
It becomes 5 mm.

The air flow on the side of the one recess 9a under such a shielding condition will be described. A space W × H × L obtained by multiplying the recess width dimension W, the height dimension H from the floor surface, and the horizontal dimension L3.
The air of No. 3 is mainly sucked into the machine room 2 through the opening hole 9b of the recess 9a. This air is then sent to the condenser 4 and the compressor 6 in the machine room 2.

Here, the air that is most supplied as the suction air to the opening 9b is the air on the floor below the lower opening 9d. The reason is that the lower opening 9d minimizes the ventilation resistance, and a temperature difference is generated between the warm air in the machine room 2 and the air on the floor surface having a low temperature, which causes an upward draft effect. This is because an updraft due to Furthermore, the space Wx corresponding to the recess 9a
The air of H × L3 is sucked into the machine room 2 so that the space W × H × L3 corresponding to the recess 9a (the recess 9
Air from the upper side, left side, and right side side plates 9 of a and the L1 gap between the adjacent object wall surface 35) is sucked into the opening hole 9b and flows in, and air is supplied into the machine room 2. . In this way, the air supplied to the machine room 2 through the opening holes 9b can be increased.

Air is also supplied into the machine room 2 from the opening slit 8a of the machine room cover 8 through the ventilation step 17 on the back of the refrigerator.

Even when the operation of the refrigerator is stopped (the blower 5 is stopped), fresh air always enters the machine room 2 due to the floor air and the draft effect in the machine room 2, as described above. It is guided to the other opening hole 10b facing. Therefore, this air causes the condenser 4 and the compressor 6 to
Can be cooled, the temperature rise of the compressor 6 can be prevented, and its reliability can be ensured.

Explaining the air flow on the other recessed portion 10a side under the above-mentioned shielding condition, the air sent into the machine room 2 exchanges heat with the condenser 4 and the compressor 6 in the machine room 2 and the like. The warm air is discharged to the surroundings through the opening 10b. The discharged warm air passes through the gap L1 between the side surface plate 10 above the recess 10a and the adjacent object wall surface 36, and is discharged upward along the side surface plate 10 of the refrigerator. Further, warm air in the machine room 2 is simultaneously discharged from the opening slit 8b of the machine room cover 8. The discharged air rises in the ventilation step portion 18 on the rear step portion of the refrigerator and is discharged to the outside of the refrigerator.

Explaining the flow of air when the refrigerator is stopped under the above-mentioned shielding conditions, that is, when the blower 5 is stopped, the air is sucked from one opening hole 9b by the draft action and opened through the machine room 2. Hole 10b, side gap L1
The exhaust heat passage is formed in this order to promote heat dissipation in the machine room 2. Here, since the recess 10a and the bottom side of the refrigerator communicate with each other through the lower opening 10d, the warm air from the opening 10b is discharged to the upper side of the refrigerator through the gap L1 together with the air on the bottom side of the refrigerator. To be done.

Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 8 is a perspective view of a rear main part showing a machine room portion of a refrigerator according to a second embodiment of the present invention in a comparison view from different directions. This embodiment is different from the first embodiment as described below, and is otherwise basically the same as the first embodiment.

In this embodiment, the opening hole 9b and the opening hole 10 are provided.
b is formed by a plurality of openings. As a result, it is possible to prevent dust and rats from entering during operation, improve the external appearance, and increase the rigidity as compared with one opening hole.

Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 9 is a perspective view of a rear main part showing a machine room portion of a refrigerator according to a third embodiment of the present invention in a comparison view from different directions. This embodiment is different from the second embodiment as described below, and is otherwise basically the same as the second embodiment.

In the present embodiment, the side plate 9 located on the blower suction side of the machine room 2 has a recess 9a inwardly of the machine room 2.
Is independently drawn from the end of the side plate 9. As a result, the rigidity of the opening hole portion can be remarkably improved, and even if the opening hole 9b is formed, the reliability of the strength of the side plate 9 can be sufficiently ensured.

Further, in the present embodiment, the recess 10a and the opening hole 10b are eliminated, and the opening slit 8b is formed over a wide range of the machine room cover 8. As a result, the reliability of the strength of the side plate 10 can be ensured.

Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 10 is a rear perspective view of a refrigerator according to the fourth embodiment of the present invention. This embodiment is different from the second embodiment as described below, and is otherwise basically the same as the second embodiment.

The ridge line 16 is a rear corner portion formed by bending the side plates 9 and 10 formed over the entire height in the vertical direction. In this embodiment, the radial shape of the ridge line 16 in the cross section is
From the bottom of the total height of the refrigerator to a height Y of 1/3 to 1/2, the size is about 2 to 3 mm, which is the same as a conventional general refrigerator, and the height above the height Y is about 5 to 10 mm, which is larger than this. Has been formed.

With the air flow of such a structure, the warm air discharged from the opening 10b is discharged to the outside of the refrigerator along the upper side plate. The warm air from the opening slit 8b of the machine chamber cover is discharged upward along the ventilation step portion 18. During these rising warm air, the ventilation step 18
The velocity of the air passing through is higher than that of the warm air flowing along the side plate 10. This is because the ventilation step portion 18 has a large passage cross-sectional area, and the warm air from the machine room cover 8b has a large draft velocity due to the back step portion, which increases the wind speed of the ascending airflow. This phenomenon, especially in the shielding conditions, the difference in the speed of the ascending air flow becomes large,
This is because the gap L1 between the side plate and the wall surface at the time of shielding is as small as about 10 mm, and therefore the warm air rising in the gap L1 is affected by the frictional resistance of the wall surface, and the wind speed of the rising warm air becomes small.

Therefore, the side plate 1 is located near the ridge 16.
Due to the difference in speed between the air flow along 0 and the rising air flow in the exhaust heat passage 18, a part of the air flow along the side plate 10 is gradually sucked toward the ventilation step portion 18 side. Due to the suction of the airflow, the warm air from the machine room 2 increases in the exhaust heat suction amount of the airflow as the height of the refrigerator increases, and the movement of the airflow further promotes heat dissipation in the machine room. Become.

Therefore, the total height of the refrigerator is 1 as in this embodiment.
By constructing the cross-sectional radius of the ridge line 16 having a height of / 3 to 1/2 height Y or more, the rising air from the side plate 10 to the ventilation step portion 18 gradually increases, and the warm air in the machine room 2 can be smoothly heated efficiently. It can be discharged well, and the heat radiation performance of the compressor 6 and the condenser 4 can be greatly improved.

Next, a fifth embodiment of the present invention will be described with reference to FIG. FIG. 11 is a rear perspective view of a refrigerator according to a fifth embodiment of the present invention. This embodiment is different from the fourth embodiment as described below, and is otherwise basically the same as the fourth embodiment.

In this embodiment, a plurality of groove portions 15 extending upward from the recess 10a are formed. This groove 15
Communicate with the recess 10 a, one of which extends close to the ridge 16. The depth of the groove 15 is formed to be equal to or slightly smaller than the depth L2 of the side surface plate recessed portion, and specifically, it is formed to be about 5 to 10 mm. The groove 15 is formed as an integral diaphragm with the side plate 10, and its cross-sectional shape has, for example, a corrugated shape. By integrally forming the diaphragm with the side plate 10 in this manner, the rigidity of the refrigerator body 1 is increased.

When warm air is discharged from the opening 10b, this discharged air is easily discharged from the recess 10a along the groove 15. Further, when the warm air along the vertical groove portion 15 reaches the position corresponding to the ridge line 16 which is ⅓ to ½ or more of the total height of the refrigerator under the surrounding shielding condition, the adjacent ventilation step portion 18 rises. The warm air is gradually sucked and guided to the ventilation step portion 18.

As described above, by forming a plurality of groove portions 15 recessed toward the refrigerator main body in the vertical direction upward from the recess portion 10a of the side plate 10, the lower end of the groove portion 15 is formed so as to be connected to the recess portion 10a. The warm air discharged from the machine room 2 can be smoothly discharged along the groove 15. Further, since the ventilation passage resistance can be reduced, the blowing load of the blower 5 can be reduced and the output of the blower 5 can be reduced. As a result, the power consumption of the refrigerator can be reduced. Further, in this embodiment, since neither the recess 10a nor the groove 15 travels from the side plate 10, no special parts are required as a packing material for the refrigerator. Therefore, the cost of packing materials for refrigerators can be reduced.

Although the side plate 10 is provided with the groove 15 in this embodiment, the groove 15 may be provided on both side plates 9 and 10. By doing this, the refrigerator body 1
The rigidity of the refrigerator is further improved, and it is possible to make a refrigerator with high strength.

[0051]

As described above, according to the present invention, it is possible to satisfactorily ventilate the machine room through the opening hole on the side surface of the machine room, and to install the air gap between the wall surface of the adjacent object in a narrow state. It is possible to obtain a refrigerator in which good ventilation can be performed to the machine room through the opening hole on the side surface of the machine room, the heat dissipation performance of the compressor and the condenser can be improved, and the power consumption can be reduced.

Further, according to the present invention, it is possible to obtain the refrigerator in which the resistance of the ventilation passage in the machine room is reduced, the power consumption of the refrigerator can be reduced, and the sufficient cooling performance can be secured even under a high load.

[Brief description of drawings]

FIG. 1 is a rear perspective view showing a machine room portion of a refrigerator according to a first embodiment of the present invention as seen through.

FIG. 2 is a cross-sectional view including a machine room of the refrigerator of FIG.

FIG. 3 is a rear perspective view of a machine room of the refrigerator shown in FIG. 1, showing a comparison view from different directions.

4 is a refrigeration cycle diagram of the refrigerator of FIG. 1. FIG.

5 is a perspective view of a single condenser used in the refrigerator of FIG. 1. FIG.

6 is a cross-sectional view of the refrigerator of FIG. 1 including a machine room under actual installation shielding conditions.

7 is a cross-sectional view taken along the line AA of FIG.

FIG. 8 is a rear perspective view of a machine room of a refrigerator according to a second embodiment of the present invention, showing the machine room in different directions.

FIG. 9 is a rear main part perspective view showing the machine room of the refrigerator according to the third embodiment of the present invention in a comparison view from different directions.

FIG. 10 is a rear perspective view of a refrigerator according to a fourth embodiment of the present invention.

FIG. 11 is a rear perspective view of a refrigerator according to a fifth embodiment of the present invention.

[Explanation of symbols]

1 ... Refrigerator main body, 2 ... Machine room, 3 ... Main body bottom plate, 4 ... Condenser, 5 ... Blower, 5a ... Fan, 5b ... Fan motor,
6 ... Compressor, 7 ... Base, 8 ... Machine room cover, 8a ... Opening slit, 8b ... Opening slit, 9 ... Side plate, 9a ...
Recessed portion, 9b ... Opening hole, 9c ... Flange portion, 9d, 10
d ... Lower opening, 10 ... Side plate, 10a ... Recess, 10
b ... Opening hole, 10c ... Flange part, 10d ... Lower opening part, 11 ... Back plate, 12 ... Ceiling plate, 13 ... Partition plate, 1
4 ... Evaporating dish, 15 ... Groove part, 16 ... Ridge line, 17, 18 ... Ventilation step part, 21 ... Outer box, 22 ... Storage room, 23 ... Inner box, 24
... Insulating material, 25, 26 ... Door, 27, 28 ... Leg, 29 ... Floor surface, 30 ... Dew-prevention pipe, 31 ... Capillary tube, 32 ... Evaporator, 33 ... Refrigerant pipe, 34 ... Radiating fin, 35, 36 ... Adjacent object wall surface.

Continued front page    (72) Inventor Susumu Yamazaki             800 Tomita, Ohira-cho, Shimotsuga-gun, Tochigi             Hitachi Co., Ltd., Cooling & Heat Division

Claims (5)

[Claims] 1. A machine room provided at a lower corner of a rear surface of a refrigerator body, a compressor and a condenser arranged in the machine room, and a compressor room and a condenser arranged in the machine room. In a refrigerator provided with a ventilator that ventilates, the blower is installed so as to ventilate in the left and right direction in the machine room, and a side plate located on the blower suction side of the machine room is recessed toward the machine room side and A refrigerator characterized by forming a recess communicating with a space on the bottom surface of the refrigerator and forming an opening hole in the recess. 2. A machine room provided at a lower corner of a rear surface of a refrigerator main body, a compressor and a condenser arranged in the machine room, and a compressor room and a condenser arranged in the machine room. In a refrigerator provided with a blower that ventilates to, a suction port and a blowout port are respectively provided on the left and right side plates forming the machine chamber side plates of the refrigerator, and a compressor, a blower, and a condenser are provided between the side plates. The condenser, the blower, and the compressor are provided so that the air that has exchanged heat between the condenser and the compressor is in a straight line between the suction port and the discharge port, and the suction port and the discharge port. A refrigerator characterized in that it is provided on the inner side of the machine room rather than on both side plates. 3. The blower is provided so as to be opposed to each other between the both side plates, and the suction port and the blow-out port are formed so as to be located at least in a projection plane in the left-right direction of the blower, and the compressor. Is formed on the outlet side and the condenser is located on the inlet side, and the upper end of the compressor outlet is formed above the upper end of the condenser inlet. Further, the side plate on the outlet side is
A plurality of groove portions extending upward above the air outlet are provided so as to communicate with the air outlet, and air from the air outlet passes through a condenser and a compressor in the machine chamber, and then the upper end of the air outlet. The refrigerator according to claim 1, wherein the refrigerator is guided to the plurality of groove portions after passing through the portion. 4. A machine room cover for covering the machine room with a bottom plate of a main body forming a top wall and a front wall near the inside of the chamber, side plates forming both sides, a base forming a bottom surface, and a back surface. -, The refrigerator body is formed with a ventilation step portion extending vertically up and down over the entire height of the refrigerator at the back corner located on the blowout side of the blower and on the blowout side of the refrigerator. 2. The refrigerator according to claim 1, wherein a cover ventilation step portion that constitutes a lower portion of the ventilation step portion is formed in the cover, and an opening slit is formed in the cover ventilation step portion. 5. The blower is installed so as to ventilate in the left-right direction in the machine room, and the condenser is located at a suction side of the blower and is provided at a suction port provided on the side of the side plate toward the machine room. 2. The refrigerator according to claim 1, wherein the condensers are arranged so as to face each other, and the condenser is formed by a cross fin tube type heat exchanger in which a large number of heat radiation fins are arranged in parallel in a refrigerant pipe at a narrow pitch.