JP7369434B2 - refrigerator - Google Patents

Description

TECHNICAL FIELD The present invention relates to a refrigerator, and more particularly to a refrigerator in which components constituting a refrigeration cycle are integrated into a machine room.

In a typical refrigerator, a storage room such as a refrigerating room is formed inside an insulated box, and this storage room is equipped with a refrigeration cycle so that the temperature range is suitable for cooling and preserving the stored items. Cooled by

The refrigeration cycle consists of a compressor, a condenser, an expansion means and an evaporator. Among these, the condenser is a relatively large device that exchanges heat between the high-pressure, high-temperature refrigerant and the outside atmosphere, and is made up of meandering refrigerant piping near the rear or bottom of the insulated box. .

Patent Document 1 below describes a refrigerator in which a compressor and a condenser are arranged in a machine room of a heat-insulating box. Specifically, a machine room is formed at the bottom of the rear side of the heat insulating box, and a compressor and a condenser are arranged inside this machine room. Moreover, a blower is arranged between the compressor and the condenser. When the refrigeration cycle is operated, the blower blows air to the condenser, so that heat exchange in the condenser can be actively performed, and the refrigeration cycle can be operated effectively.

JP 2015-1344 Publication

However, since the above-mentioned refrigerator was equipped with a large condenser of the general fin-and-tube type, further miniaturization of the refrigerator was not easy. As a configuration for achieving miniaturization of the entire refrigerator, it is conceivable to consolidate each component of the refrigeration cycle into a machine room formed at the rear lower part of the heat insulating box. However, the condenser and compressor that make up the refrigeration cycle generate a large amount of thermal energy when the refrigeration cycle is operated. It has not been easy to properly release the heat generated from component equipment to the outside.

Furthermore, in addition to the condenser and compressor that make up the refrigeration cycle, the machine room also needs to house evaporation plates, etc., and it is not easy to store these components compactly in the machine room. Ta.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to compactly store each component of a refrigeration cycle in a machine room, and further reduce the amount of energy emitted by these components during operation. To provide a refrigerator that can effectively release heat to the outside.

a refrigeration cycle consisting of a compressor, a microchannel condenser, an expansion means, and an evaporator; a machine room formed at the rear lower part of the heat-insulating box; and an inside of the machine room. An air blower that blows air, an evaporation tray that stores defrosting water generated by defrosting the evaporator, an air intake port that is formed at one end of the machine room and that takes in air from the outside, and the machine. an air outlet formed at the other end of the chamber and through which the air blown by the blower is discharged to the outside, the refrigerator comprising: the compressor, the microchannel condenser, the blower, and the evaporating dish is stored in the machine room, and a first opening area, a closed area, and a second opening area are formed on the upper surface side of the evaporating dish from the upstream side of the flow of the air blown by the blower, and the When the blower blows the air, an air passage path and an air circulation path are formed, and the air passage path is such that the air passes through the air intake port, the microchannel condenser, the blower, the compressor, and the air circulation path. The air circulation path is a path passing through an air outlet, and the air circulation path is a path through which the air circulates through the second opening area, the closed area, the first opening area, the microchannel condenser, and the blower. , the closed area is formed by blocking the evaporating dish from above with a shielding plate .

Further, the refrigerator of the present invention is characterized in that a side wall portion of the evaporating dish is disposed downstream of the blower.

The refrigerator of the present invention includes an insulating box in which a storage chamber is formed, a refrigeration cycle comprising a compressor, a microchannel condenser, an expansion means, and an evaporator, and a machine room formed at the rear lower part of the insulating box. An air blower that blows air inside the machine room, an evaporation tray that stores defrosting water generated by defrosting the evaporator, and an air that is formed at one end of the machine room and that takes in air from the outside. A refrigerator comprising an intake port and an air discharge port formed on the other end side of the machine room through which the air blown by the blower is discharged to the outside, the compressor, the microchannel condenser, The blower and the evaporating tray are housed in the machine room, and the upper surface side of the evaporating tray includes a first opening area, a closed area, and a second opening from the upstream side of the air flow blown by the blower. A region is formed, and the blower blows the air to form an air passage path and an air circulation path, and in the air passage path, the air passes through the air intake port, the microchannel condenser, and the blower. , the air circulation path is a path passing through the compressor and the air outlet, and the air circulation path is such that the air passes through the second open area, the closed area, the first open area, the microchannel condenser, and the blower. The refrigerant pipe , which is a circulating path and connects the compressor and the microchannel condenser, is characterized in that it passes through the second opening area, near the bottom of the evaporating dish, and through the first opening area.

The refrigerator of the present invention includes an insulating box in which a storage chamber is formed, a refrigeration cycle comprising a compressor, a microchannel condenser, an expansion means, and an evaporator, and a machine room formed at the rear lower part of the insulating box. An air blower that blows air inside the machine room, an evaporation tray that stores defrosting water generated by defrosting the evaporator, and an air that is formed at one end of the machine room and that takes in air from the outside. A refrigerator comprising an intake port and an air discharge port formed on the other end side of the machine room through which the air blown by the blower is discharged to the outside, the compressor, the microchannel condenser, The blower and the evaporating tray are housed in the machine room, and the upper surface side of the evaporating tray includes a first opening area, a closed area, and a second opening from the upstream side of the air flow blown by the blower. A region is formed, and the blower blows the air to form an air passage path and an air circulation path, and in the air passage path, the air passes through the air intake port, the microchannel condenser, and the blower. , the air circulation path is a path passing through the compressor and the air outlet, and the air circulation path is such that the air passes through the second open area, the closed area, the first open area, the microchannel condenser, and the blower. The closed area is formed by blocking the evaporating dish from above with a shielding plate, and the microchannel condenser and the blower are disposed on the upper surface of the shielding plate.

Further, in the refrigerator of the present invention, the opening area of the air intake port is larger than the area of the cavity of the blower.

Further, in the refrigerator of the present invention, the opening area of the air outlet is larger than the area of the cavity of the blower.

a refrigeration cycle consisting of a compressor, a microchannel condenser, an expansion means, and an evaporator; a machine room formed at the rear lower part of the heat-insulating box; and an inside of the machine room. An air blower that blows air, an evaporation tray that stores defrosting water generated by defrosting the evaporator, an air intake port that is formed at one end of the machine room and that takes in air from the outside, and the machine. an air outlet formed at the other end of the chamber and through which the air blown by the blower is discharged to the outside, the refrigerator comprising: the compressor, the microchannel condenser, the blower, and the evaporating dish is stored in the machine room, and a first opening area, a closed area, and a second opening area are formed on the upper surface side of the evaporating dish from the upstream side of the flow of the air blown by the blower, and the When the blower blows the air, an air passage path and an air circulation path are formed, and the air passage path is such that the air passes through the air intake port, the microchannel condenser, the blower, the compressor, and the air circulation path. The air circulation path is a path passing through an air outlet, and the air circulation path is a path through which the air circulates through the second opening area, the closed area, the first opening area, the microchannel condenser, and the blower. , the closed area is formed by blocking the evaporating dish from above with a shielding plate . According to the refrigerator of the present invention, the compressor and microchannel condenser that constitute the refrigeration cycle can be compactly stored in the machine room. Therefore, it is possible to secure a large storage room and improve volumetric efficiency. Furthermore, by blowing air inside the machine room with a blower, heat generated from the compressor and microchannel condenser during refrigerator operation can be effectively released to the outside. Furthermore, by forming an air circulation path in addition to the air passage path inside the machine room, the air heated by heat exchange with the microchannel condenser is directed above the defrosting water stored in the evaporation tray. The defrost water can be effectively evaporated through circulation. Furthermore, since the air cooled by evaporating the defrosting water is circulated to the microchannel condenser side, the refrigerant can be effectively condensed by the microchannel condenser.

Further, the refrigerator of the present invention is characterized in that a side wall portion of the evaporating dish is disposed downstream of the blower. Thereby, according to the refrigerator of the present invention, a part of the air blown by the blower hits the side wall of the evaporating dish, thereby forming an air circulation path.

The refrigerator of the present invention includes an insulating box in which a storage chamber is formed, a refrigeration cycle comprising a compressor, a microchannel condenser, an expansion means, and an evaporator, and a machine room formed at the rear lower part of the insulating box. An air blower that blows air inside the machine room, an evaporation tray that stores defrosting water generated by defrosting the evaporator, and an air that is formed at one end of the machine room and that takes in air from the outside. A refrigerator comprising an intake port and an air discharge port formed on the other end side of the machine room through which the air blown by the blower is discharged to the outside, the compressor, the microchannel condenser, The blower and the evaporating tray are housed in the machine room, and the upper surface side of the evaporating tray includes a first opening area, a closed area, and a second opening from the upstream side of the air flow blown by the blower. A region is formed, and the blower blows the air to form an air passage path and an air circulation path, and in the air passage path, the air passes through the air intake port, the microchannel condenser, and the blower. , the air circulation path is a path passing through the compressor and the air outlet, and the air circulation path is such that the air passes through the second open area, the closed area, the first open area, the microchannel condenser, and the blower. The refrigerant pipe , which is a circulating path and connects the compressor and the microchannel condenser, is characterized in that it passes through the second opening area, near the bottom of the evaporating dish, and through the first opening area. Thereby, according to the refrigerator of the present invention, the defrosting water stored in the evaporation tray can be evaporated by the heat of the compressed refrigerant flowing through the refrigerant pipe, and furthermore, the heat exchange of the compressed refrigerant can be promoted.

The refrigerator of the present invention includes an insulating box in which a storage chamber is formed, a refrigeration cycle comprising a compressor, a microchannel condenser, an expansion means, and an evaporator, and a machine room formed at the rear lower part of the insulating box. An air blower that blows air inside the machine room, an evaporation tray that stores defrosting water generated by defrosting the evaporator, and an air that is formed at one end of the machine room and that takes in air from the outside. A refrigerator comprising an intake port and an air discharge port formed on the other end side of the machine room through which the air blown by the blower is discharged to the outside, the compressor, the microchannel condenser, The blower and the evaporating tray are housed in the machine room, and the upper surface side of the evaporating tray includes a first opening area, a closed area, and a second opening from the upstream side of the air flow blown by the blower. A region is formed, and the blower blows the air to form an air passage path and an air circulation path, and in the air passage path, the air passes through the air intake port, the microchannel condenser, and the blower. , the air circulation path is a path passing through the compressor and the air outlet, and the air circulation path is such that the air passes through the second open area, the closed area, the first open area, the microchannel condenser, and the blower. The closed area is formed by blocking the evaporating dish from above with a shielding plate, and the microchannel condenser and the blower are disposed on the upper surface of the shielding plate. As a result, according to the refrigerator of the present invention, by arranging the microchannel condenser and the blower above the evaporating tray, it is possible to compactly store the equipment that makes up the refrigeration cycle in the limited space of the machine room. can.

Further, in the refrigerator of the present invention, the opening area of the air intake port is larger than the area of the cavity of the blower. As a result, according to the refrigerator of the present invention, by increasing the opening area of the air intake port, a large amount of air is secured by the blower, increasing heat exchange with the microchannel condenser and the compressor, and furthermore, It is possible to effectively evaporate the defrost water stored in the

Further, in the refrigerator of the present invention, the opening area of the air outlet is larger than the area of the cavity of the blower. As a result, according to the refrigerator of the present invention, by increasing the opening area of the air outlet, a large amount of air is secured by the blower, increasing heat exchange with the microchannel condenser and the compressor, and further improving evaporation. Defrost water stored in the dish can be effectively evaporated.

1 is a diagram illustrating a refrigerator according to an embodiment of the present invention, and is a perspective view of the refrigerator seen from the upper rear side. FIG. 1 is a side sectional view showing a refrigerator according to an embodiment of the present invention. It is a figure showing a refrigerator concerning an embodiment of the present invention, and is a perspective view of a machine room seen from the rear side upper part. 1 is a diagram illustrating a refrigerator according to an embodiment of the present invention, and is a perspective view of various constituent devices housed in a machine room viewed from the upper rear side. 1 is a diagram showing a refrigerator according to an embodiment of the present invention, in which (A) is a view from above of various components stored in a machine room, and (B) is a diagram showing various components stored in a machine room. It is a diagram seen from the rear. 1 is a diagram showing a refrigerator according to an embodiment of the present invention, and is a perspective view showing a related structure of an evaporating dish and refrigerant piping. 1 is a diagram showing a refrigerator according to an embodiment of the present invention, (A) is a perspective view of the machine room viewed from the rear left side, (B) is a perspective view of the machine room viewed from the rear right side, and (C ) is a perspective view of the blower seen from the upper right side. 1 is a diagram showing a refrigerator according to an embodiment of the present invention, and is a block diagram showing a connection configuration of each component device.

Hereinafter, a refrigerator 10 according to an embodiment of the present invention will be described in detail based on the drawings. In addition, when describing this embodiment, the same reference numerals will be used for the same members in principle, and repeated description will be omitted. This embodiment will be described using the up, down, front, back, left, and right directions, and the left and right are the left and right when the refrigerator 10 is viewed from the rear.

FIG. 1 is a perspective view of a refrigerator 10 according to an embodiment of the present invention, viewed from the rear and upper side. The refrigerator 10 has a heat insulating box 11 and a storage chamber formed inside the heat insulating box 11. It has a refrigerator compartment 12, a vegetable compartment 114, and a freezer compartment 13 as storage compartments. The front opening of the refrigerator compartment 12 is closed with a rotary heat-insulating door 18, the front opening of the vegetable compartment 114 is closed with a pull-out heat-insulating door 19, and the front opening of the freezer compartment 13 is closed with a pull-out heat-insulating door 20. has been done. The outer box 111 of the refrigerator 10 includes a top plate 151 facing upward, a side plate 152 facing left, a side plate 153 facing right, and a back plate 154 facing rear.

A machine room 14 as a cavity is formed at the lowermost part of the rear side of the refrigerator 10. The machine room 14 is formed continuously from the left end to the right end of the heat insulating box 11. Further, the rear opening of the machine room 14 is closed by a machine room cover 155.

An air intake port 26 for taking outside air into the machine room 14 is formed on the right side of the machine room 14. The air intake port 26 is formed by providing a plurality of openings in the side plate 153 and the machine compartment cover 155. Furthermore, an air outlet 27 is formed on the left side of the machine room 14 through which air discharged from the machine room 14 to the outside passes. The air outlet 27 is formed by providing a plurality of openings in the side plate 152 and the machine compartment cover 155. The air intake 26 and air outlet 27 will be described in detail with reference to FIG. The air intake port 26 and the air discharge port 27 are formed in a slit shape in order to prevent foreign matter from entering the machine room 14 from the outside.

FIG. 2 is a side sectional view of the refrigerator 10. Referring to this figure, the heat insulating box body 11 includes an outer box 111 made of a steel plate bent into a predetermined shape, an inner box 112 made of a synthetic resin plate placed inside the outer box 111, and an outer box 112 made of a synthetic resin plate placed inside the outer box 111. It is composed of a heat insulating material 113 filled between a box 111 and an inner box 112.

A cooling chamber 115 is defined at the back of the freezing chamber 13, and an evaporator 116 is housed in the cooling chamber 115. An air passage 118 is formed above the cooling chamber 115. The air cooled by the evaporator 116 in the cooling chamber 115 is blown into the air passage 118 by a cold air blowing fan (not shown). The air cooled by the evaporator 116 is also blown into the freezer compartment 13.

A defrosting heater 117 is arranged inside the cooling chamber 115 and below the evaporator 116 . The defrosting heater 117 is a heater that generates heat when energized, and generates heat when energized during the defrosting process, and the generated heat melts the frost on the evaporator 116. The defrosting water generated by defrosting reaches the evaporating dish 25 via the water conduit 31 shown in FIG. 4, and evaporates by exchanging heat with the high-temperature compressed refrigerant.

FIG. 3 is a perspective view of the inside of the machine room 14 viewed from the upper rear side. Here, a situation is shown in which the above-described machine compartment cover section 155 is removed from the refrigerator 10.

The machine room 14 houses, from the right side, a microchannel condenser 23, a blower 21, an evaporating dish 25, and a compressor 22. Furthermore, the machine room 14 also includes refrigerant piping for interconnecting each device that constitutes the vapor compression refrigeration cycle, including the microchannel condenser 23 and the compressor 22.

In this way, by storing each component that makes up the refrigeration cycle in the machine room 14 together with the evaporating dish 25, the volume required to accommodate the components required for operation of the refrigerator 10 can be reduced. can do. Therefore, the effective volume occupied by the storage chamber with respect to the entire refrigerator 10 can be increased. Thereby, more items to be stored can be stored in the refrigerator 10, and furthermore, the external dimensions of the refrigerator 10 can be reduced.

With reference to FIGS. 4 and 5, the airflow formed inside the machine room 14 will be explained while explaining each component housed in the machine room 14 described above. FIG. 4 is a perspective view showing each component stored in the machine room 14, FIG. 5(A) is a top view of each component as seen from above, and FIG. 5(B) is a perspective view showing each component. FIG. 3 is a rear view of the device as seen from the rear.

Referring to FIG. 4, inside machine room 14, compressor 22 is arranged on the left side, and evaporation dish 25 is arranged on the right side. The compressor 22 and the evaporating dish 25 are large-sized components among the components housed in the machine room 14. In this embodiment, the space in the machine room 14 can be effectively utilized by arranging the compressor 22 and the evaporating dish 25, which are large-sized components, side by side.

The compressor 22 constitutes a vapor compression type refrigeration cycle together with a microchannel condenser 23, an expansion means (not shown), and the above-mentioned evaporator 116. With the cooling operation using the refrigeration cycle, frost forms on the surface of the evaporator 116. If a large amount of frost forms on the surface of the evaporator 116, heat transfer and air blowing will be inhibited, so defrosting is performed periodically by heating the evaporator 116 using the defrosting heater 17. Defrosting water generated by defrosting the evaporator 116 is stored in the evaporating tray 25 via the water pipe 31 and evaporated using the heat emitted from the refrigerant.

The blower 21 and the microchannel condenser 23 are arranged above the evaporation dish 25. By doing so, the space above the evaporating dish 25, which is a flat member, can be effectively utilized.

The blower 21 is arranged on the upper surface of a shielding plate 28, which will be described later. As the fan disposed inside the blower 21 rotates, the blower 21 blows air from the right to the left.

The microchannel capacitor 23 is a small condenser and is arranged on the upper surface of the shielding plate 28. The microchannel condenser 23 is a microchannel condenser, and is composed of heat transfer tubes and heat radiation fins (not shown here). Compared to a general condenser, the microchannel condenser 23 can obtain a large amount of heat exchange with a small size. The microchannel capacitor 23 is arranged on the upper surface of the shielding plate 28 on the right side (upstream side) of the blower 21 .

The evaporation dish 25 is a dish-shaped member for temporarily receiving the above-mentioned defrosting water, and is made of integrally molded synthetic resin. Specifically, the evaporating dish 25 has a bottom surface portion 251 , a front side surface portion 252 , a rear side wall portion 253 , a left side wall portion 254 , and a right side wall portion 255 . Further, the lower end of the water conduit 31 is arranged near the bottom surface portion 251 of the evaporating dish 25. The water conduit 31 is a conduit that guides defrosting water generated by defrosting the evaporator 116 described above to the evaporating dish 25 .

A first opening area 256, a closed area 257, and a second opening area 258 are formed on the upper surface of the evaporating dish 25 from the right side. The first opening area 256 is an area where the upper surface of the evaporating dish 25 on the right side is not blocked and is opened upward. The closed area 257 is an area where the upper surface of the evaporating dish 25 is closed by the shielding plate 28. The second opening area 258 is an area where the upper surface of the evaporating dish 25 on the left side is not blocked and is opened upward. In this way, by forming the first opening area 256, the closed area 257, and the second opening area 258 on the upper surface of the evaporating dish 25, the defrosting water stored in the evaporating dish 25 can be appropriately evaporated as described later. A path for air circulation can be formed to allow air to circulate.

A shielding plate 28 is arranged on the upper surface of the evaporating dish 25 . The shielding plate 28 is made of a metal plate or a resin plate, and covers the central portion of the evaporating dish 25 in the left-right direction from above. The rear end side of the shielding plate 28 is fixed to the upper end of the rear side wall part 253, and the front end side of the shielding plate 28 is fixed to the upper end of the front side wall part 252.

On the upper surface of the shielding plate 28, the microchannel capacitor 23 and the blower 21 are arranged from the right side. The shielding plate 28 partially blocks the upper part of the evaporating dish 25 and also functions as a mounting table on which the blower 21 and the microchannel condenser 23 are mounted. A support plate 29 made of a metal plate is fixed to the lower surface of the microchannel capacitor 23. The left end of the support plate 29 is fixed to the upper surface of the shielding plate 28. Further, the right end of the support plate 29 is fixed to a protruding support portion 30 that protrudes upward from the bottom surface portion 251 of the evaporating dish 25 .

When the blower 21 is rotated during operation of the refrigerator 10, outside air is introduced from the air intake port 26 shown in FIG. do. Thereafter, the air is discharged to the outside via the air outlet 27 shown in FIG.

The compressor 22 and the microchannel condenser 23 are connected to each other by a refrigerant pipe 37, and the compressed refrigerant heated to a high temperature by being compressed by the compressor 22 is transferred to the microchannel condenser 23 via the refrigerant pipe 37. Sent. The refrigerant pipe 37 is routed near the bottom surface 251 of the evaporating dish 25 from the second opening area 258 , is pulled out upward from the first opening area 256 , and is connected to the microchannel condenser 23 . By routing the refrigerant pipe 37 inside the evaporating dish 25, the compressed refrigerant can be cooled by the defrosting water stored in the evaporating dish 25, and evaporation of the defrosting water can be promoted. The refrigerant pipe 37 will be described later with reference to FIG.

The air path formed inside the machine room 14 will be described with reference to FIG. 5. FIG. 5(A) is a top view of each of the component devices built in the machine room 14 viewed from above, and FIG. 5(B) is a rear view of each of these devices viewed from the rear.

Referring to FIGS. 5A and 5B, when the blower 21 blows air, an air passage path 35 and an air circulation path 36 are formed inside the machine room 14.

The air passage path 35 is a path through which air blows through from the right to the left inside the machine room 14. Specifically, in the air passage path 35, the air taken in from the air intake port 26 shown in FIG. 3 passes through the microchannel condenser 23, the blower 21, and the compressor 22 in this order, and the air This is a path through which the water is discharged from the discharge port 27 to the outside. By forming the air passage path 35, heat exchange between the microchannel condenser 23 and the compressor 22 is promoted, the refrigerant is favorably condensed in the microchannel condenser 23, and the compressor 22 is favorably cooled.

The air circulation path 36 is a path through which air circulates inside the machine room 14. Specifically, in the air circulation path 36, air first passes through the microchannel condenser 23 and the blower 21 in that order. Next, a part of the air that has passed through the blower 21 is blocked by the left side wall 254 of the evaporating dish 25 and enters the inside of the evaporating dish 25 from the second opening area 258 . The air that has entered the inside of the evaporating dish 25 moves toward the right below the shielding plate 28 along the vicinity of the surface of the defrosting water. At this time, evaporation of the defrosting water is promoted. In FIG. 5(B), the liquid level of the defrosting water is shown by a chain line. Thereafter, the air that has proceeded further to the right is blocked by the right side wall portion 255 and returns to the microchannel condenser 23 and the blower 21 after proceeding upward via the first opening area 256.

As the air circulates in the air circulation path 36, the air that becomes high temperature by exchanging heat with the microchannel condenser 23 passes through the upper surface of the defrosting water stored in the evaporating dish 25, exchanging heat, and is removed. It can promote the evaporation of frost water. Further, the air cooled by evaporating the defrosting water inside the evaporating dish 25 returns from the first opening area 256 and passes through the microchannel condenser 23 . This promotes heat exchange in the microchannel condenser 23 and allows the refrigerant to be effectively condensed. Moreover, since a part of the air circulating through the air circulation path 36 is discharged to the outside via the air passage path 35, evaporated defrosting water does not remain trapped inside the machine room 14.

In addition, by forming the air passage path 35, dry, low-temperature air can always be introduced from the outside into the machine room 14 from the air intake port 26, allowing heat exchange of the microchannel condenser 23 and evaporation of defrosting water. can be promoted. By forming the air passage path 35, air can be constantly discharged to the outside via the air outlet 27, so that the air heated by exchanging heat with the microchannel condenser 23 and compressor 22 enters the machine room 14. It can prevent you from becoming coy.

Here, the air passing path 35 and the air circulation path 36 are not completely separated paths, and air is mixed in the air passing path 35 and the air circulation path 36. That is, by introducing the air constituting the air passage path 35 into the air circulation path 36, the defrosting water can be favorably evaporated using dry air supplied from the outside. Furthermore, since the air forming the air circulation path 36 is introduced into the air passage path 35, the heat generated from the microchannel condenser 23 and the moisture generated by evaporating the defrosting water are efficiently transferred from the machine room 14 to the outside. can be released to

Here, a configuration for improving the flow of air in the air circulation path 36 described above will be explained.

Referring to FIG. 5(A), the relative sizes of the first open area 256, the closed area 257, and the second open area 258 can be set in a range suitable for forming the air circulation path 36. . For example, each of the first open area 256 and the second open area 258 can have a larger opening area than the closed area 257. By doing so, the flow rate of air passing through the first opening area 256 and the second opening area 258 can be increased, and heat exchange in the microchannel condenser 23 and evaporation of the defrosting water can be promoted.

Referring to FIG. 5(B), the upper end P2 of the left side wall portion 254 of the evaporating dish 25 is arranged below the lower end P1 of the blower 21. By doing so, the air passing path 35 is formed by blocking a part of the air blown by the blower 21, and at the same time, the defrosting water stored in the evaporating dish 25 is prevented from reaching the blower 21. be able to.

Referring to FIG. 6, the related structure of the evaporating dish 25 and the refrigerant pipe 37 will be described. FIG. 6 is a perspective view of each component housed in the machine room 14 as seen from above.

As mentioned above, the evaporating dish 25 is adjacent to the right side of the compressor 22. Furthermore, a refrigerant pipe 37 is led out from the compressor 22 through which compressed refrigerant flows. The refrigerant pipe 37 extends above the left side wall portion 254 of the evaporating dish 25 and is formed in a meandering manner along the bottom surface portion 251 . Furthermore, spacers 38 are arranged at multiple locations of the refrigerant pipe 37 that is formed in a meandering manner on the upper surface of the bottom surface portion 251 . By arranging the spacer 38, the refrigerant pipe 37 and the bottom portion 251 can be separated by a predetermined distance. Therefore, a large contact area between the defrosting water stored in the evaporating dish 25 and the refrigerant pipe 37 is ensured, and the high temperature refrigerant flowing inside the refrigerant pipe 37 and the defrosting water are effectively exchanged heat, and the defrosting is performed. Water can be evaporated well.

With reference to FIG. 7, the opening areas of the air intake port 26 and the air exhaust port 27 will be described. 7(A) is a perspective view of the lower end of the refrigerator 10 viewed from the left, FIG. 7(B) is a perspective view of the lower end of the refrigerator 10 viewed from the right, and FIG. 7(C) is a perspective view of the lower end of the refrigerator 10 viewed from the right. FIG. 2 is a perspective view showing the blower 21 in detail.

Referring to FIG. 7(A), air exhaust port 27 is formed on the left end side of machine room 14, and is an opening through which air discharged from machine room 14 to the outside passes. The air outlet 27 includes a first air outlet 271 , a second air outlet 272 , and a third air outlet 273 . The first air outlet 271 is a portion opened near the rear lower end of the side plate 152. The second air outlet 272 is a portion opened at the left end portion of the machine chamber lid portion 155. The third air outlet 273 is a portion opened on the upper left side of the machine chamber lid portion 155. The first air outlet 271, the second air outlet 272, and the third air outlet 273 are composed of a plurality of openings arranged in rows and columns.

Referring to FIG. 7(B), air intake port 26 is an opening formed on the right end side of machine room 14, through which air introduced into machine room 14 passes. The air intake port 26 has a first air intake port 261 and a second air intake port 262. The first air intake port 261 is formed by opening the rear portion of the lower end of the side plate 153. The second air intake port 262 is formed by opening the right end side of the machine chamber lid portion 155. The first air intake port 261 and the second air intake port 262 are composed of a plurality of openings arranged in rows and columns.

Referring to FIG. 7(C), blower 21 is an axial fan in which a wind tunnel 212 is formed inside a casing 211. Inside the wind tunnel 212, a fan (not shown) rotates, so that the blower 21 blows air from the right to the left.

In this embodiment, the opening area A1 of the air outlet 27 is made larger than the opening area A3 of the wind tunnel 212 of the blower 21. Specifically, the opening area A1 of the air exhaust port 27 shown in FIG. It is calculated by the sum of the opening area A13 of the outlet 273. Here, the opening area A1 of the air outlet 27 is made larger than the opening area A3 of the wind tunnel 212 shown in FIG. 7(C). By doing so, air can be properly discharged from the machine room 14 to the outside via the air outlet 27, and the microchannel condenser 23 and compressor 22 housed in the machine room 14 can be cooled well. can.

In this embodiment, the opening area A2 of the air intake port 26 is made larger than the opening area A3 of the wind tunnel 212 of the blower 21. Specifically, the opening area A2 of the air intake port 26 shown in FIG. 7(B) is calculated as the sum of the opening area A21 of the first air intake port 261 and the opening area A22 of the second air intake port 262. Ru. The opening area A2 of the air intake port 26 is set larger than the opening area A3 of the wind tunnel 212 shown in FIG. 7(C). By doing so, air can be effectively introduced into the machine room 14 via the air intake port 26, and the microchannel condenser 23 and compressor 22 housed in the machine room 14 can be cooled appropriately. I can do it.

The connection configuration of the refrigerator 10 having the above-described configuration will be described with reference to the block diagram of FIG. 8. The refrigerator 10 includes a calculation control unit 24, a temperature sensor 32, a timer 33, a compressor 22, a blower 21, and a defrosting heater 34.

The arithmetic control unit 24 is composed of, for example, a CPU, receives input from various sensors, performs predetermined arithmetic processing, and controls the operation of various component devices such as the compressor 22 based on the processing results. Further, the arithmetic control unit 24 may include a semiconductor storage device that stores various constants and programs for performing the cooling operation. The arithmetic control unit 24 sets each storage room to an indoor temperature range suitable for storing the stored items, and performs a defrosting process at an appropriate timing.

A temperature sensor 32 and a timer 33 are connected to input terminals of the calculation control section 24 . The temperature sensor 32 is attached to each of the storage compartments described above, and measures the temperature inside these compartments. The timer 33 measures the cooling time for cooling each storage compartment, the operating time of the defrosting heater 34, and the like.

The compressor 22 , the blower 21 , and the defrosting heater 34 are connected to the output side terminal of the calculation control unit 24 . Various devices such as the compressor 22 operate based on output signals output from the calculation control section 24.

When operating the refrigerator 10 for cooling, the arithmetic control unit 24 operates the compressor 22 and the blower 21 so that the temperature of each storage area measured by the temperature sensor 32 falls within a predetermined temperature range. Air cooled by a vapor compression type refrigeration cycle including the compressor 22 is blown into each storage chamber, whereby each storage chamber is cooled to a predetermined temperature range. Furthermore, while the compressor 22 is in operation, the microchannel condenser 23 and the compressor 22 are cooled by the air blown by the blower 21 .

In this embodiment, as described above with reference to FIG. 5, the air passage path 35 and the air circulation path 36 are formed inside the machine room 14 to promote heat exchange in the microchannel condenser 23 and the like. , defrost water can be evaporated well.

Further, when the frost on the evaporator 116 reaches a certain level or more, a defrosting process is performed to melt the frost that has grown on the evaporator 116. Frost formation on the evaporator 116 is detected, for example, when the cooling time measured by the timer 33 reaches a certain level. Further, defrosting water generated by melting the frost is stored in the evaporation tray 25 via the water conduit 31 shown in FIG. In this embodiment, as described above with reference to FIG. can be used to effectively evaporate defrost water.

The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.

For example, referring to FIG. 4, in this embodiment, the microchannel capacitor 23 and the blower 21 are arranged from the right, but by reversing this order, the blower 21 and the microchannel capacitor 23 are arranged from the right. They can also be arranged in order.

10 Refrigerator 11 Insulating box body 111 Outer box 112 Inner box 113 Insulating material 114 Vegetable compartment 115 Cooling compartment 116 Evaporator 117 Defrosting heater 118 Air duct 12 Refrigerator compartment 13 Freezer compartment 14 Machine compartment 151 Top plate 152 Side plate 153 Side plate 154 Rear plate 155 Machine compartment cover 17 Defrost heater 18 Insulation door 19 Insulation door 20 Insulation door 21 Air blower 211 Casing 212 Wind tunnel 22 Compressor 23 Microchannel condenser 24 Arithmetic control unit 25 Evaporation plate 251 Bottom part 252 Front side part 253 Rear side wall Part 254 Left side wall 255 Right side wall 256 First opening area 257 Closed area 258 Second opening area 26 Air intake 261 First air intake 262 Second air intake 27 Air outlet 271 First air outlet 272 Second air outlet 273 Third air outlet 28 Shielding plate 29 Support plate 30 Projecting support portion 31 Water pipe 32 Temperature sensor 33 Timer 34 Defrosting heater 35 Air passage path 36 Air circulation path 37 Refrigerant piping 38 Spacer

Claims (6)

an insulated box body in which a storage room is formed;
a refrigeration cycle consisting of a compressor, a microchannel condenser, an expansion means and an evaporator;
a machine room formed at the rear lower part of the heat insulating box;
a blower that blows air inside the machine room;
an evaporation tray in which defrost water generated by defrosting the evaporator is stored;
an air intake port formed at one end of the machine room, through which air is taken in from the outside;
An air exhaust port formed on the other end side of the machine room, through which the air blown by the blower is discharged to the outside, the refrigerator comprising:
The compressor, the microchannel condenser, the blower, and the evaporating dish are housed in the machine room,
A first opening region, a closed region, and a second opening region are formed on the upper surface side of the evaporating dish from the upstream side of the flow of the air blown by the blower,
When the blower blows the air, an air passage path and an air circulation path are formed,
The air passage path is a path through which the air passes through the air intake, the microchannel condenser, the blower, the compressor, and the air outlet,
The air circulation path is a path through which the air circulates through the second opening area, the closed area, the first opening area, the microchannel condenser, and the blower,
The refrigerator is characterized in that the closed area is formed by blocking the evaporating dish from above with a shielding plate . The refrigerator according to claim 1, wherein a side wall portion of the evaporating dish is disposed downstream of the blower. an insulated box body in which a storage room is formed;
a refrigeration cycle consisting of a compressor, a microchannel condenser, an expansion means and an evaporator;
a machine room formed at the rear lower part of the heat insulating box;
a blower that blows air inside the machine room;
an evaporation tray in which defrost water generated by defrosting the evaporator is stored;
an air intake port formed at one end of the machine room, through which air is taken in from the outside;
An air exhaust port formed on the other end side of the machine room, through which the air blown by the blower is discharged to the outside, the refrigerator comprising:
The compressor, the microchannel condenser, the blower, and the evaporating dish are housed in the machine room,
A first opening region, a closed region, and a second opening region are formed on the upper surface side of the evaporating dish from the upstream side of the flow of the air blown by the blower,
When the blower blows the air, an air passage path and an air circulation path are formed,
The air passage path is a path through which the air passes through the air intake, the microchannel condenser, the blower, the compressor, and the air outlet,
The air circulation path is a path through which the air circulates through the second opening area, the closed area, the first opening area, the microchannel condenser, and the blower,
A refrigerator characterized in that a refrigerant pipe connecting the compressor and the microchannel condenser passes through the second opening area, near the bottom of the evaporating dish, and through the first opening area. an insulated box body in which a storage room is formed;
a refrigeration cycle consisting of a compressor, a microchannel condenser, an expansion means and an evaporator;
a machine room formed at the rear lower part of the heat insulating box;
a blower that blows air inside the machine room;
an evaporation tray in which defrost water generated by defrosting the evaporator is stored;
an air intake port formed at one end of the machine room, through which air is taken in from the outside;
An air exhaust port formed on the other end side of the machine room, through which the air blown by the blower is discharged to the outside, the refrigerator comprising:
The compressor, the microchannel condenser, the blower, and the evaporating dish are housed in the machine room,
A first opening region, a closed region, and a second opening region are formed on the upper surface side of the evaporating dish from the upstream side of the flow of the air blown by the blower,
When the blower blows the air, an air passage path and an air circulation path are formed,
The air passage path is a path through which the air passes through the air intake, the microchannel condenser, the blower, the compressor, and the air outlet,
The air circulation path is a path through which the air circulates through the second opening area, the closed area, the first opening area, the microchannel condenser, and the blower,
The closed area is formed by blocking the evaporating dish from above with a shielding plate,
The refrigerator, wherein the microchannel condenser and the blower are disposed on the upper surface of the shielding plate. The refrigerator according to any one of claims 1 to 4, wherein the opening area of the air intake port is larger than the area of the cavity of the blower. 6. The refrigerator according to claim 1, wherein the opening area of the air outlet is larger than the area of the cavity of the blower.

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