JP2005201530A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator free from a decrease in cooling air for cooling a condenser, caused by dust regarding the efficiency of the refrigerator. <P>SOLUTION: This refrigerator is provided with a bottom duct 14 provided at the lower part of a refrigerator body; an outer condenser 2 provided in a machine chamber 12; and a cooling fan 13. A duct suction port 17 of the bottom duct 14 is provided at the front edge lower part of the refrigerator body. Consequently, even if a suction port at the bottom part of the bottom duct 14 is blocked with dust under operation for many hours, outside air can be sucked from the suction port at the front face of the refrigerator. The efficiency lowering of a refrigerating cycle can thereby be prevented causing no decrease in the cooling air for cooling the outer condenser 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a refrigerator in which the heat dissipation efficiency of an air-cooled condenser is increased.

  In recent years, energy conservation has been promoted rapidly in the refrigerator industry while environmental protection has been screamed.

  Energy-saving technologies for refrigerators include heat insulation enhancement of heat insulation boxes, optimal control including inverter compressors, and higher efficiency of each refrigeration cycle device.

In particular, as a technique for improving the efficiency of a condenser, which is one of the devices in the refrigeration cycle, a technique for improving the efficiency by securing cooling air to the air-cooled condenser has been attempted. (For example, see Patent Document 1)
Hereinafter, the conventional refrigerator will be described with reference to the drawings.

  FIG. 8 is a perspective view showing a machine room of a conventional refrigerator. As shown in FIG. 8, the conventional refrigerator has a compressor 1, an outer condenser 2, an inner condenser (not shown), a decompression means (not shown), and an evaporator (not shown). Refrigeration cycle 3 connected to the heat sink, a heat insulating box 4, a cooling fan 5 for cooling the compressor 1 and the outer condenser 2, and a lower back surface of the heat insulating box 4, and the compressor 1, the outer condenser 2 and the cooling fan. 5, a machine room 6 having an opening on the back surface, and a machine room cover 7 arranged so as to close the opening.

  The compressor 1 and the outer condenser 2 are disposed in the machine room 6 with the cooling fan 5 interposed therebetween.

  In some cases, the outer condenser 2 has a duct formed in the lower part of the heat insulation box 4 instead of in the machine room 6 and is installed in the duct. As the efficiency increases on the downstream side, the efficiency of the refrigerator can be increased by installing the outer condenser 2 in the machine room 4.

  The bottom suction port 8 and the back suction port 9 through which the cooling fan 5 sucks outside air on the upstream side and the downstream side, respectively, with respect to the flow of cooling air by the cooling fan 5 at the bottom of the heat insulating box 4 and the machine room cover 7, A bottom discharge port 10 and a back discharge port 11 are provided.

  About the refrigerator comprised as mentioned above, the operation | movement is demonstrated below.

  The high-temperature and high-pressure gas refrigerant compressed by the compressor 1 is cooled and condensed by the outer condenser 2 and the inner condenser, depressurized by a decompression means such as a capillary tube, and becomes a low-temperature and low-pressure gas-liquid two-layer refrigerant to the evaporator. And flow.

  The low-pressure gas-liquid two-layer refrigerant that has flowed into the evaporator evaporates due to a temperature difference from the air in the refrigerator, and cools the surrounding air with the heat of vaporization.

At this time, the cooling air that cools the outer condenser 2 and the compressor 1 is sucked from the bottom suction port 8 and the rear suction port 9 by the cooling fan 5, and after cooling the outer condenser 2 and the compressor 1, the bottom discharge port 10. And it discharges from the back discharge port 11.
JP 2002-333258 A

  However, in the above conventional configuration, the bottom suction port 8 and the back suction port 9 are blocked by dust or the like in a long-term operation, the cooling air by the cooling fan 5 is reduced, the power consumption is increased, or the compressor Since 1 was not cooled, there was a risk of high temperatures and wear of internal components.

  The present invention solves the above-described conventional problems, and an object thereof is to provide a refrigerator with high efficiency and reliability by not reducing the cooling air even when operated for a long period of time.

  Further, in the conventional configuration, when a soft material such as a carpet is used for the floor, the bottom suction port 8 and the bottom discharge port 11 are blocked, and the cooling air by the cooling fan 5 is reduced. There is a risk that the amount of power consumption increases or the compressor 1 is not cooled, resulting in a high temperature and wear of internal components.

  Another object of the present invention is to provide a refrigerator with high efficiency and reliability by securing cooling air even when a soft material such as a carpet is used for the floor.

  In the above conventional configuration, the lower part of the front edge of the refrigerator is cooled by heat transfer from inside the refrigerator, and when the humidity is high, moisture condenses on the surface, water drops fall on the floor, and the floor becomes dirty. Since the condensing pipe and the heater are embedded in the lower part of the box, the heat inside the condensing pipe and the heater heats the refrigerator in reverse, which may increase the power consumption.

  Another object of the present invention is to provide a highly efficient refrigerator by preventing condensation of moisture to the lower part of the front edge of the refrigerator without providing a condenser pipe or heater at the lower part of the refrigerator.

  In order to solve the above-described conventional problems, a refrigerator according to the present invention includes a refrigerator body, a machine room provided in the lower back of the refrigerator body, a suction duct provided in the lower part of the refrigerator body, a condenser provided in the machine room, a machine And a cooling fan for cooling the condenser provided in the room, and an outside air inlet of the suction duct is provided at a lower portion of the front edge of the refrigerator main body.

  As a result, when the suction port at the bottom of the suction duct is blocked by dust during a long period of operation or the refrigerator is placed on the carpet and the suction port at the bottom of the suction duct is blocked, the outside air is discharged from the suction port on the front of the refrigerator. The air can be sucked in, and the cooling air for cooling the outer condenser is not reduced, so that the efficiency of the refrigeration cycle can be prevented from being lowered.

  The refrigerator of the present invention has a configuration in which an outer condenser is provided on the suction side of the cooling fan.

  Accordingly, by placing the outer condenser on the suction side of the cooling fan where the flow of air is uniform, the outer condenser can be efficiently cooled and a highly efficient refrigeration cycle can be achieved.

  The refrigerator of the present invention is installed obliquely with the suction side of the cooling fan facing the back of the refrigerator.

  Thereby, the suction air of the cooling fan flows through the entire outer condenser, and the outer condenser can be efficiently cooled, so that a highly efficient refrigeration cycle can be achieved.

  The refrigerator of the present invention has a configuration in which a suction port is provided on the refrigerator back side of the machine room and on the upstream side of the condenser with respect to the flow of cooling air in the machine room.

  Thereby, the suction air of the cooling fan flows through the entire outer condenser, and the outer condenser can be efficiently cooled, so that a highly efficient refrigeration cycle can be achieved.

  The refrigerator of the present invention has a configuration in which a discharge duct is provided in the lower part of the refrigerator body, and a discharge port of the discharge duct is provided in the lower part of the front edge of the refrigerator body.

  As a result, the back of the refrigerator is pressed against the wall, and even when the refrigerator is placed on the carpet and the discharge port at the bottom of the discharge duct is blocked, air can be discharged from the discharge port on the front of the refrigerator, and the outer condenser can be The cooling air to be cooled is not reduced, and a reduction in the efficiency of the refrigeration cycle can be prevented.

  Moreover, the refrigerator of the present invention comprises a refrigerator main body from a heat insulating material, an outer box, and an inner box, and a condensation pipe is provided on one or more of the front, side, back and top surfaces of the refrigerator between the heat insulating material and the outer box. The configuration is provided.

  Thus, it is possible to prevent moisture from condensing on the bottom of the front surface without providing a condensation pipe or a heater at the bottom of the heat insulating box.

  The refrigerator of the present invention has a suction louver at the suction port of the suction duct, a discharge louver at the discharge port of the discharge duct, the suction louver sucks outside air from the direction opposite to the discharge port, and the discharge louver sucks the cooling air into the suction port. It is characterized by being configured to discharge in the opposite direction.

  Thus, the hot air discharged from the discharge duct is not sucked from the suction duct, the outer condenser can be efficiently cooled, and a highly efficient refrigeration cycle can be achieved.

  Further, the refrigerator of the present invention integrally forms a suction duct and a discharge duct provided at the lower part of the refrigerator, provides a partition that divides the suction duct and the discharge duct, provides a fin projecting from the partition toward the refrigerator body, and separates the partition and the fin. Is formed integrally with the suction duct and the discharge duct and is in close contact with the refrigerator main body.

  Accordingly, the suction duct, the discharge duct and the partition and the seal member of the refrigerator can be configured as one component, and the suction and discharge side seals of the duct can be made more complete, and the duct can be configured at low cost.

  The refrigerator of the present invention is characterized in that the fin is inclined toward the discharge side of the duct.

  As a result, fins are tilted by the pressure difference between the air in the discharge duct and the air in the suction duct, air leaks from the discharge duct to the suction duct, and the warm air flowing in the discharge duct is not sucked from the suction duct, so that the outer A condenser can be cooled and it can be set as a highly efficient refrigerating cycle.

  The refrigerator of the present invention is characterized in that a suction grill is provided with a removable grill that communicates with the suction duct and outside air, and a filter for removing dust is provided at the suction side opening of the grill.

  As a result, dust in the air is not directly sucked into the duct, and the air flow of the cooling fan is not reduced by cleaning the dust adhering to the filter, so that the cooling air for cooling the outer condenser is reduced. Therefore, the efficiency of the refrigeration cycle can be prevented from decreasing.

  The refrigerator of the present invention is characterized in that the suction side opening of the grill is provided at a height of 20 mm or more from the floor surface.

  This makes it possible to lengthen the cleaning cycle of the filter without sucking dust accumulated on the floor from the filter, and to reduce the cooling air that cools the outer condenser because the dust does not easily adhere to the filter. Therefore, the efficiency of the refrigeration cycle can be prevented from decreasing.

  The refrigerator of the present invention is characterized in that a discharge-side opening that communicates the discharge port of the duct and outside air is provided under the suction-side opening of the grill.

  As a result, the dust accumulated on the floor is blown off by the wind from the discharge port, the dust accumulated on the floor is not sucked from the suction port, the filter cleaning cycle can be lengthened, and the dust does not easily adhere to the filter. Therefore, the cooling air for cooling the outer condenser is not reduced, and the efficiency reduction of the refrigeration cycle can be prevented.

  The refrigerator of the present invention can be a highly efficient and reliable refrigerator by not reducing the cooling air due to dust adhesion or the like even if it is operated for a long period of time.

  Moreover, the refrigerator of this invention can be made into a refrigerator with high efficiency and reliability by ensuring cooling air, even if a soft material such as a carpet is used for the floor.

  Moreover, the refrigerator of this invention can be made into a highly efficient refrigerator by preventing the condensation of the water | moisture content to the refrigerator front edge lower part, without providing a condensation pipe and a heater in the refrigerator lower part.

  The invention according to claim 1 is a refrigerator main body, a machine room provided in the lower back of the refrigerator main body, a suction duct provided in the lower part of the refrigerator main body, a condenser provided in the machine room, and a condenser provided in the machine room for cooling the condenser. A cooling fan is provided, and the outside air inlet of the suction duct is provided at the lower part of the front edge of the refrigerator body, so that the inlet at the bottom of the inlet duct is blocked by dust during long periods of operation or the refrigerator is placed on the carpet. Even when the suction port at the bottom of the suction duct is blocked, outside air can be sucked in from the suction port on the front of the refrigerator, cooling air for cooling the outer condenser is not reduced, and a reduction in efficiency of the refrigeration cycle can be prevented. .

  According to the second aspect of the present invention, by providing an outer condenser on the suction side of the cooling fan, the outer condenser can be cooled with the suction side cooling air of the cooling fan where the flow of air is uniform. It can cool and can be set as a highly efficient refrigerating cycle.

  In the invention according to claim 3, by installing the suction side of the cooling fan obliquely toward the back of the refrigerator, the suction air of the cooling fan flows through the entire outer condenser, and the outer condenser can be efficiently cooled. A highly efficient refrigeration cycle can be obtained.

  According to the fourth aspect of the present invention, the suction air of the cooling fan is provided by providing a suction port on the rear side of the refrigerator in the machine room and on the upstream side of the condenser with respect to the flow of the cooling air in the machine room. Flows through the entire outer condenser, and the outer condenser can be efficiently cooled, so that a highly efficient refrigeration cycle can be achieved.

  According to the fifth aspect of the present invention, the discharge duct is provided in the lower part of the refrigerator body, and the discharge port of the discharge duct is provided in the lower part of the front edge of the refrigerator body so that the refrigerator rear surface is pressed against the wall, and the refrigerator is placed on the carpet. Even when the discharge port at the bottom of the discharge duct is closed, the air can be discharged from the discharge port on the front of the refrigerator, and the cooling air cooling the outer condenser is not reduced, reducing the efficiency of the refrigeration cycle. Can be prevented.

  Invention of Claim 6 comprises a refrigerator main body from a heat insulating material, an outer box, and an inner box, and it condenses on any one or more of the refrigerator front surface, side surface, back surface, and upper surface between a heat insulating material and an outer box. By adopting a configuration in which the pipe is provided, it is possible to prevent moisture from condensing to the front bottom without providing a condensation pipe or a heater at the bottom of the heat insulation box.

  According to a seventh aspect of the present invention, a suction louver is provided at a suction port of a suction duct, a discharge louver is provided at a discharge port of the discharge duct, the suction louver sucks outside air from a direction opposite to the discharge port, Is configured to discharge in the opposite direction to the suction port, so that the outer condenser can be efficiently cooled without sucking the warm air discharged from the discharge duct from the suction duct, and a highly efficient refrigeration cycle. can do.

  The invention according to claim 8 is formed by integrally forming a suction duct and a discharge duct provided in the lower part of the refrigerator, providing a partition that divides the suction duct and the discharge duct, providing a fin projecting from the partition toward the refrigerator body, And fins are integrally formed with the suction duct and discharge duct and are in close contact with the refrigerator body, so that the suction duct, discharge duct and partition and the seal member of the refrigerator can be configured as one part, the suction side of the duct and the discharge side The side seal can be made more complete, and the duct can be constructed at low cost.

  According to the ninth aspect of the present invention, when the fin is inclined toward the discharge side of the duct, the fin is tilted due to the pressure difference between the air in the discharge duct and the air in the suction duct, and air leaks from the discharge duct to the suction duct. The outer condenser can be efficiently cooled without sucking warm air flowing through the suction duct, and a highly efficient refrigeration cycle can be achieved.

  According to a tenth aspect of the present invention, a detachable grill that communicates the suction duct and the outside air is provided in the suction port, and a filter that removes dust is provided in the suction side opening of the grill so that dust in the air is directly removed. Since the air flow of the cooling fan is not reduced by cleaning the dust adhering to the filter without being sucked into the duct, the cooling air cooling the outer condenser is not reduced, and the efficiency of the refrigeration cycle is reduced. Can be prevented.

  In the invention according to claim 11, by providing the suction side opening of the grill at a height of 20 mm or more from the floor surface, the dust accumulated on the floor is not sucked from the filter, and the cleaning cycle of the filter is lengthened. In addition, since the dust does not easily adhere to the filter, the cooling air for cooling the outer condenser is not reduced, and the efficiency of the refrigeration cycle can be prevented from being lowered.

  The invention according to claim 12 blows away dust accumulated on the floor with wind from the discharge port by providing a discharge side opening that communicates the discharge port of the duct and the outside air below the suction side opening of the grill. The dust accumulated on the floor is not sucked from the suction port, the filter cleaning cycle can be lengthened, and the dust hardly adheres to the filter. A reduction in cycle efficiency can be prevented.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a perspective view of a refrigerator according to Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view of the machine room of the refrigerator according to the embodiment. FIG. 3 is a rear view of the machine room of the refrigerator according to the embodiment. FIG. 4 is a front view of the bottom duct of the refrigerator according to the embodiment. FIG. 5 is a perspective view of the bottom duct of the refrigerator according to the embodiment. 6 is a cross-sectional view taken along the line AA of FIG. 7 is a cross-sectional view taken along the line BB of FIG.

  1 to 7, reference numeral 12 denotes a machine room that houses the compressor 1, the outer condenser 2, and the cooling fan 13. Moreover, the cooling fan 13 is inclined to the back side of the refrigerator.

  Reference numeral 14 denotes a bottom duct which sucks outside air from the front edge of the refrigerator by the cooling fan 13 and cools the outer condenser 2 and the compressor 1 and then is discharged from the front edge of the refrigerator. The bottom duct 14 is provided with a partition 15 that separates the suction side and the discharge side, and a fin 16 is integrally formed on the partition 15. The bottom duct 14 is in close contact with the bottom of the heat insulating box 4 and leaks air from the discharge side to the suction side. Is sealed.

  The bottom duct 14 includes a duct suction port 17 that sucks outside air into the bottom and the front edge of the heat insulation box 4 and a duct discharge port 18 that discharges the duct, and the duct suction port 17 at the front edge of the heat insulation box 4 has a duct discharge port. 18 is provided with a suction louver 19 inclined to the opposite side to the duct suction port 17 at the front edge of the heat insulating box 4 and a discharge louver 20 inclined to the opposite side to the duct suction port 17.

  A grill 21 is provided at the front edge of the bottom duct 14. The grill 21 includes a grill suction port 22 that communicates with the duct suction port 17 at a position of 20 mm or more from the floor above the front edge, and a grill discharge port 23 that communicates with the duct discharge port 18 below the grill suction port 22. . The grill suction port 22 includes a filter 24 that removes dust, and removes dust in the air.

  A machine room cover 25 is provided on the back side of the machine room 12, and an opening on the back side of the machine room 12 is closed. The machine room cover 12 includes a cover suction port 26 for sucking outside air and a cover discharge port 27 for discharging. The cooling fan 13 sucks outside air and discharges the cooled air from the outer condenser 2 and the compressor 1.

  About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  During the operation of the refrigerator, the high-temperature and high-pressure gas refrigerant compressed by the compressor 1 flows into the outer condenser 2 and is liquefied and cooled by the cooling air from the cooling fan 13.

  Cooling air from the cooling fan 13 is sucked from the grill suction port 22 through the duct suction port 17 and the cover suction port 26 to cool the outer condenser 2 and the compressor 1, and from the cover discharge port 27 and the duct discharge port 18 to the grill discharge port. 23 is discharged.

  Here, since the duct suction port 17 is provided at the front edge portion of the heat insulating box 4, even if dust is attached to the duct suction port 17 due to the suction cooling air, it can be easily cleaned. Even if it is laid, the duct suction port 17 at the front edge is not blocked, and the amount of cooling air can always be ensured.

  In the present embodiment, the cooling air flow path is a key type, and the outer condenser 2 is provided at the corners thereof, so that the cooling air can easily pass through the inside of the air flow path. Cooling air stagnation may occur at the corners of the air path. On the other hand, for example, a box fan or the like is used as the cooling fan 13, but generally the cooling air flows uniformly on the suction side of the fan, and the air fan is bent at a right angle as in the present embodiment. When used, the object to be cooled can be cooled evenly by placing an object to be cooled on the suction side of the cooling fan 13.

  Further, since the direction of the cooling fan 13 is inclined toward the back side of the heat insulating box 4, the cooling that flows through the outer condenser 2 even when the outer condenser 2 is present at the corner of the key-shaped air passage as in the present embodiment. The wind is sucked from the front side of the heat insulating box 4 and flows into the cooling fan 12 after flowing through the back side, so that cooling air does not stagnate at the corners of the air path and cools the entire outer condenser 2. be able to.

  Further, since the cover suction port 26 is provided on the upstream side of the outer condenser 2 with respect to the flow of the cooling air and on the back side of the heat insulating box 4, the cooling air is sucked from both the right and left with respect to the flow of the cooling air. Cooling air flows through the entire outer condenser 2 to cool the entire outer condenser 2.

  In addition, since the duct discharge port 18 is provided at the front edge of the heat insulating box 4, when the back of the refrigerator is pressed against the wall, the refrigerator is placed on the carpet and the duct discharge port 18 at the bottom is blocked. However, since the duct outlet 18 on the front side of the refrigerator is open, it is possible to discharge air and the cooling air for cooling the outer condenser 2 is not reduced.

  In addition, the cooling air is sucked from the front of the refrigerator and discharged from the front, and the inner condenser 2 is provided on any one or more of the front, side, back and top of the refrigerator. Water does not condense in the lower part of the front edge of the refrigerator, and there is no need to provide a condensation pipe or heater for preventing dew condensation.

  Further, since the suction louver 19 and the discharge louver 20 face in opposite directions, the warm air discharged from the duct discharge port 18 is discharged in the direction opposite to the duct suction port 17 and sucks warm air from the duct suction port 17. There is no.

  Further, since the fin 16 integrally molded with the bottom duct 14 seals the suction side and the discharge side of the bottom duct 14, it is possible to perform the sealing more reliably than attaching a member for sealing. The warm air flowing on the discharge side does not flow on the suction side, and the bottom duct 14 can be made inexpensively by reducing the number of parts.

  Further, since the fin 16 is inclined toward the discharge side of the bottom duct 14, the fin 16 is tilted due to the pressure difference between the discharge side and the suction side, and a gap is formed between the fin 16 and the bottom of the heat insulating box 4. Hot air flowing on the discharge side of the duct 14 does not flow to the suction side.

  In addition, since the duct suction port 17 is provided with a grille 21 and the grill suction port 22 is provided with a filter 24, dust adheres to the filter 24, adheres to the duct suction port 17, etc. Further, since the grille 21 is detachably attached without being reduced, cleaning can be easily performed, so that the cooling air for cooling the outer condenser 2 is not reduced.

  In addition, since the grill suction port 22 is provided at the upper portion of the grill 21, dust accumulated on the floor is not sucked from the grill suction port 22, and the cleaning cycle of the filter 24 can be lengthened. Therefore, the cooling air for cooling the outer condenser 2 does not decrease.

  Further, since the grill discharge port 23 is provided below the grill suction port 22, dust accumulated on the floor can be blown off by the wind discharged from the grill discharge port 23, and the dust accumulated on the floor is sucked from the grill suction port 22. In addition, the cleaning cycle of the filter 24 can be lengthened, and dust hardly adheres to the filter 24, so that the cooling air for cooling the outer condenser 2 is not reduced.

  Therefore, the suction port is closed with dust, and the cooling air for cooling the outer condenser 2 is not reduced, and the outer condenser 2 can be efficiently cooled, so that a highly efficient refrigerator can be obtained.

  Moreover, since the outer condenser 2 can be cooled with the cooling air having a low temperature without sucking the warm air that has cooled the outer condenser 2 and the compressor 1 again, the outer condenser 2 can be efficiently cooled. It can be a high refrigerator.

  Moreover, since cooling air can be flowed through the outer condenser 2 whole and the outer condenser 2 can be cooled efficiently, it can be set as a highly efficient refrigerator.

  Moreover, since the inside of a refrigerator is not warmed by the heat conduction from a condensation pipe or a heater, it can be set as a highly efficient refrigerator.

  Although the form of the outer condenser 2 is not limited in the present embodiment, the same effect can be obtained in any form such as a flat fin tube, a spiral fin tube, and a wire condenser.

  Further, in the present embodiment, it has been described that the refrigerant flows to the inner condenser next to the outer condenser 2, but the same effect can be obtained even if the order of the refrigerant flowing in the outer condenser 2 and the inner condenser is reversed.

  In the present embodiment, the refrigeration cycle 3 is used as a means for cooling the refrigerator, but the same effect can be obtained by using any means that requires heat dissipation, such as an electronic cooling type or a Stirling type. .

  Further, in the present embodiment, the filter 24 is provided in the grill suction port 22, but the effect of the filter 24 can be obtained even if the filter 24 is directly attached to the duct suction port 17. However, since the suction and discharge air paths can be freely configured by configuring as a part of the grill 21, the positions of the grill suction port 22 and the grill discharge port 23 can be freely determined, and the effects of claims 11 and 12 can be obtained. It is done.

  Further, in the present embodiment, the cover suction port 26 and the cover suction port 27 are provided in the machine room cover 25. However, if the suction and discharge ports are provided in addition to the machine room cover 25 on the rear face of the refrigerator, the same effect is provided. Is obtained.

  As described above, in the refrigerator according to the present invention, the suction port and the discharge port are provided on the front surface of the refrigerator, the suction port is provided on the upper side, and the discharge port is provided on the lower side. Therefore, it can be applied to any device having an air forced circulation air passage.

The perspective view of Embodiment 1 of the refrigerator by this invention Cross-sectional view of the machine room of the refrigerator of the same embodiment Rear view of the machine room of the refrigerator of the embodiment Plan view of the bottom duct of the refrigerator of the same embodiment The perspective view of the bottom duct of the refrigerator of the embodiment Sectional drawing of the AA cross section of FIG. Sectional drawing of the BB cross section of FIG. Rear perspective view of machine room of conventional refrigerator

Explanation of symbols

2 outer condenser 4 heat insulation box 12 machine room 13 cooling fan 14 bottom duct 15 partition 16 fin 17 duct suction port 18 duct discharge port 19 suction louver 20 discharge louver 21 grill 22 grill suction port 23 grill discharge port 24 filter 26 cover suction port 27 Cover outlet

Claims (12)

A refrigerator body, a machine room provided in the lower back of the refrigerator body, a suction duct provided in the lower part of the refrigerator body, a condenser provided in the machine room, and a cooling fan provided in the machine room for cooling the condenser. The refrigerator is characterized in that an outside air inlet of the suction duct is provided at a lower part of the front edge of the refrigerator body. The refrigerator according to claim 1, wherein a condenser is provided on the suction side of the cooling fan. The refrigerator according to claim 1 or 2, wherein the cooling fan is installed obliquely with the suction side facing the back of the refrigerator. The refrigerator as described in any one of Claim 1 to 3 which provided the suction inlet in the position of a condenser on the back side of the refrigerator of a machine room, and the upstream of the said condenser with respect to the flow of the cooling air in the said machine room. The refrigerator as described in any one of Claim 1 to 4 which provided the discharge duct in the lower part of the refrigerator main body, and provided the discharge outlet of the said discharge duct in the front edge lower part of the said refrigerator main body. The refrigerator main body is comprised from the heat insulating material, the outer box, and the inner box, and the condensation pipe is provided on any one or more of the front surface, the side surface, the back surface, and the upper surface of the refrigerator between the heat insulating material and the outer box. Refrigerator. A suction louver is provided at the suction port of the suction duct, a discharge louver is provided at the discharge port of the discharge duct, the suction louver sucks outside air from the direction opposite to the discharge port, and the discharge louver sends cooling air in the direction opposite to the suction port. The refrigerator according to claim 5 or 6, wherein the refrigerator is configured to discharge. A suction duct and a discharge duct provided at the lower part of the refrigerator are integrally molded, a partition for dividing the suction duct and the discharge duct is provided, and a fin protruding from the partition toward the refrigerator body is provided, and the partition and the fin are the suction duct, The refrigerator according to any one of claims 5 to 7, wherein the refrigerator is integrally formed with a discharge duct and is in close contact with the refrigerator main body. The refrigerator according to claim 8, wherein the fin is inclined toward the discharge side of the duct. 10. The detachable grill that communicates the suction duct with the outside air is provided at the suction port, and a filter that removes dust is provided at the suction side opening of the grill. 11. refrigerator. The refrigerator according to claim 10, wherein the suction side opening of the grill is provided at a height of 20 mm or more from the floor surface. The refrigerator according to claim 10 or 11, wherein a discharge-side opening that communicates the discharge port of the duct and outside air is provided under the suction-side opening of the grill.

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