JP2012242032A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator that can balance improvement of heat releasing capacity of a condenser with enhancement of evaporation of stored water, in the refrigerator in which the condenser is cooled by air by means of a fan.SOLUTION: The center of rotation 34 of an axial fan 11 is disposed above an inlet 16 of a lower machine chamber 5, and an evaporation pan 12 is disposed below the center of rotation 34 of the axial fan 11, thus air trunk resistance in the lower machine chamber 5 is suppressed, the air passing through the condenser 9 can be surely guided to the neighborhood of a water level in the evaporation pan 12 while improving the heat releasing capacity of the condenser 9, and the evaporation of the stored water can be enhanced.

Description

  The present invention relates to a structure that promotes evaporation of stored water and improves the heat dissipating ability of the condenser in a refrigerator in which the condenser is air-cooled by a fan.

  From the standpoint of energy saving, a household refrigerator is used in combination with a condenser that is affixed to the inside of the outer casing and is naturally air-cooled from the outer casing.

  However, in the refrigerator for home use, the size of the condenser main body and the air passage is restricted from the viewpoint of space saving, and there is a concern that the air passage is blocked due to dust adhering to the room.

  Therefore, a condenser design that takes into account space saving and dust adhesion has been proposed. In particular, by providing a lower machine room, installing a condenser in the lower machine room, and sucking outside air from the bottom plate air intake to air-cool the condenser, the area of the air intake can be increased, Even when the air passage is blocked due to dust adhesion, it is possible to suppress a significant decrease in the performance of the condenser due to a decrease in the air volume.

  Also, since the refrigerator cools the internal storage room, the defrost water generated when the internal air is cooled is always guided to the lower machine room through the drainage path and collected in the evaporating dish, making the maintenance-free for consumers. Therefore, a mechanism for evaporating the collected water is necessary. Conventionally, this kind of stored water evaporation method for refrigerators employs a method in which the heat obtained along with cooling or heat dissipation of the heat generating components is used to evaporate the stored water stored in the evaporating dish.

  That is, in the design of the lower machine room, it is important to improve both the heat dissipation capability of the condenser and to ensure the evaporation capability of the stored water (see, for example, Patent Document 1).

  Hereinafter, a conventional refrigerator will be described with reference to the drawings.

  FIG. 10 is a longitudinal sectional view of a lower machine room of a conventional refrigerator, and FIG. 11 is a transverse sectional view of a lower machine room of a conventional refrigerator.

  In FIG. 10, 40 is a lower machine room of the refrigerator, 41 is a heat insulating wall of a storage room (not shown) forming the upper surface of the lower machine room 40, 42 is a bottom plate of the lower machine room 40, and 43 is in the lower machine room 40. , 44 is a fan for air-cooling the condenser 43, and 45 is a leg that supports the housing of the refrigerator.

  In FIG. 11, 50 is an evaporating dish for storing defrosted water in a storage chamber (not shown), 51 is an immersion pipe for heating water stored in the evaporating dish, 52 is a compressor, and 53 is an outlet. , 54 are partition walls that divide the lower machine chamber 40.

  Here, the air that has passed while cooling the condenser 43 is collected on the upper part of the evaporating dish 50 by the partition wall 54, then passes through the fan 44, cools the compressor 52, and is discharged from the discharge port 53 to the outside. . At this time, the periphery of the evaporating dish 50 is dried by air heated by exchanging heat with the condenser 43, thereby promoting the evaporation of water stored in the evaporating dish 50. By installing the condenser 43 and the compressor 52 in the same air path, the compressor 52 can be simultaneously cooled using the air that has passed while cooling the condenser 43.

Japanese Patent Laid-Open No. 9-292188

  However, in the configuration of the conventional refrigerator, the compressor 52 is housed in the lower machine room 40 with respect to the heat radiation of the condenser 43, so that the air path shape in the lower machine room 40 is distorted and the air path resistance is increased. There was a problem that air could not flow through the entire condenser 43 and the heat dissipation efficiency of the condenser 43 was reduced.

  Regarding the evaporation of stored water, in the case of this type of evaporation method, there are the following three items as factors for evaporating water.

  The first is the surface wind speed, the second is the water temperature, and the third is the area of the opening where water and outside air contact.

  However, in the conventional configuration, the air that has passed through the condenser 43 cannot be reliably guided to the vicinity of the water surface in the evaporating dish 50, and since the wind speed on the water surface is small, the evaporation capacity of the stored water is low, and the required evaporation In order to secure the capacity, it was necessary to increase the area of the opening of the evaporating dish 50.

  That is, a large space is required to install the evaporating dish 50, and therefore, the installation space of the condenser 43 and the fan 44 is limited, and the heat radiation capacity of the condenser 43 is increased by increasing the size of the condenser 43 and the fan 44. It has a problem that it cannot be improved.

  An object of the present invention is to solve the above-described conventional problems, and to provide a refrigerator capable of achieving both improvement of the heat dissipation capability of a condenser and promotion of evaporation capability of stored water with a simple configuration. To do.

  In order to solve the above-mentioned conventional problems, the refrigerator of the present invention is a refrigerator having a lower machine room, a condenser, a fan installed on the leeward side of the condenser and serving as a main driving source of the blower circuit, and the condensation An evaporating dish installed on the leeward side of the container, and the rotation center of the fan is disposed above the intake port of the lower machine chamber, and the rotation center of the fan is The evaporating dish is disposed below.

  As a result, the flow of air passing through the condenser can be directed upward, the air path resistance of the entire condenser is suppressed, and the warm and dry air that has passed through the condenser is surely near the water surface inside the evaporating dish. Thus, the increase in the wind speed on the water surface can promote the evaporation of the stored water while improving the heat dissipation capability of the condenser.

  The refrigerator of the present invention suppresses the air path resistance in the lower machine room, can improve the heat dissipation capacity of the condenser, promotes evaporation of stored water, and condenses by arranging the evaporating dish in a space-saving manner. The equipment and fan can be made larger, and energy can be saved by further improving the heat dissipation capacity.

The longitudinal cross-sectional view of the refrigerator in Embodiment 1 of this invention Cross section of the lower machine room of the refrigerator in Embodiment 1 of the present invention The rear view of the lower machine room of the refrigerator in Embodiment 1 of this invention The longitudinal cross-sectional view of the lower machine room of the refrigerator in Embodiment 2 of this invention The rear view of the lower machine room of the refrigerator in Embodiment 2 of the present invention Vertical sectional view of the lower machine room of the refrigerator in Embodiment 3 of the present invention The rear view of the lower machine room of the refrigerator in Embodiment 3 of the present invention Longitudinal sectional view of the lower machine room of the refrigerator in Embodiment 4 of the present invention The rear view of the lower machine room of the refrigerator in Embodiment 4 of this invention Vertical section of the lower machine room of a conventional refrigerator Cross-sectional view of the lower machine room of a conventional refrigerator

  The invention according to claim 1 is a refrigerator having a lower machine room, wherein the condenser, a fan installed on the lee side of the condenser and serving as a main drive source of the blower circuit, and installed on the lee side of the condenser. The evaporating dish is stored in the lower machine chamber, the rotation center of the fan is disposed above the intake port of the lower machine chamber, and the evaporating dish is disposed below the rotation center of the fan. Refrigerator. As a result, the flow of air passing through the condenser is directed upward, so that the air path resistance of the entire condenser is suppressed, and the warm and dry air that has passed through the condenser is reliably placed near the water surface inside the evaporating dish. In addition, by increasing the wind speed of the water surface, evaporation of the stored water can be promoted while improving the heat dissipation capability of the condenser.

  The invention described in claim 2 is a refrigerator having a lower machine room, wherein the condenser, the fan installed on the lee side of the condenser and serving as a main driving source of the blower circuit, and the lee side of the condenser are installed. The evaporating dish is stored in the lower machine chamber, the air that has passed through the condenser is forced to flow upward, the air passage is then meandered downward, and the air flows into the evaporating dish. . As a result, the flow of air passing through the condenser is directed upward, so that the air path resistance of the entire condenser is suppressed, and the warm and dry air that has passed through the condenser is reliably placed near the water surface inside the evaporating dish. In addition, by increasing the wind speed of the water surface, evaporation of the stored water can be promoted while improving the heat dissipation capability of the condenser.

  Invention of Claim 3 is a refrigerator which has arrange | positioned the wind direction board in the invention of Claim 1 or 2 above the said evaporating dish. As a result, the air that has passed through the condenser can be reliably guided to the vicinity of the water surface inside the evaporating dish, and evaporation of the stored water can be further promoted.

  Invention of Claim 4 is the invention as described in any one of Claim 1 to 3, The partition which divides the said condenser side and the said evaporating dish side, The said fan attached to the said partition, And a fan support member is disposed on the fan portion of the partition wall. Thereby, it is possible to prevent a gap from being generated between the upper surface of the lower machine room and the partition wall, and to suppress a shortcut between the air on the windward side and the leeward side of the fan.

  A fifth aspect of the present invention is the refrigerator according to the fourth aspect of the present invention, wherein a buffer member is provided between the partition wall that partitions the condenser part and the evaporating dish part and the upper surface of the lower machine room. Thus, by sealing the gap between the upper surface of the lower machine room and the partition wall, it is possible to further suppress the shortcut of the air on the windward side and leeward side of the fan, and the driving sound of the fan passes through the partition wall to Propagation to the chamber upper surface can be prevented.

  A sixth aspect of the present invention is the refrigerator according to any one of the first to fifth aspects, wherein the area of the air inlet is larger than the area of the air outlet in the lower machine room. is there. As a result, even when the air passage is blocked due to dust adhesion, it is possible to suppress a significant decrease in the performance of the condenser due to a decrease in the air volume.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the same reference numerals are given to the same components as those of the conventional example, and detailed description thereof will be omitted. The present invention is not limited to the embodiments.

(Embodiment 1)
1 is a longitudinal sectional view of a refrigerator according to Embodiment 1 of the present invention, FIG. 2 is a transverse sectional view of a lower machine room of the refrigerator according to the embodiment, and FIG. 3 is a lower machine of the refrigerator according to the embodiment. It is a rear view of a chamber.

  1 to 3, 1 is a refrigerator, 2 is a housing of the refrigerator 1, 3 is a door provided on the front surface of the refrigerator 1, 4 is a leg that supports the housing 2, and 5 is provided at a lower portion of the housing 2. The lower machine chamber 6 is an upper machine chamber provided at the upper back of the housing 2, 7 is a compressor housed in the upper machine chamber 6, and 8 is a cooler for cooling the inside of the housing 2.

  Reference numeral 101 denotes a refrigerating room arranged at the upper part of the housing 2, and 102 denotes a freezing room arranged at the lower part of the housing 2.

  The refrigerated room 101 is a storage room that is kept at a low temperature that does not freeze for refrigerated storage, and the specific lower limit of the temperature is usually set to 1 to 5 ° C. In particular, the temperature may be set to 0 to 1 ° C. in order to improve the freshness of fresh products.

  The freezer compartment 102 is a storage compartment set in a freezing temperature zone. Specifically, it is usually set to −22 to −18 ° C. for frozen storage, but may be set to a low temperature such as −30 ° C. and −25 ° C. for improving the frozen storage state. .

  Further, 9 is a condenser housed in the lower machine room 5, 10 is a partition that partitions the lower machine room 5, 11 is an axial fan (fan) that is attached to the partition 10 and air-cools the condenser 9, and 12 is a lower machine. An evaporating dish housed on the back side of the chamber 5, 13 is a wind direction plate for imparting directivity to the air, 14 is an axial fan support member for supporting the axial fan 11, and 15 is a bottom plate of the lower machine chamber 5. is there.

  The partition 10, the wind direction plate 13, and the axial fan support member 14 are made of polypropylene.

  The condenser 9 is a spiral fin tube type heat exchanger that is advantageous for preventing the air passage from being blocked by dust adhering. The condenser 9 spirals around the heat transfer tube through which the refrigerant flows and the outer periphery of the heat transfer tube. Consists of wound fins. In this embodiment, the heat transfer tube is made of copper and the fin is made of aluminum. However, aluminum or iron may be used for the heat transfer tube, and copper or iron may be used for the fin.

  Reference numeral 16 denotes an intake port of the lower machine chamber for sucking air provided in the bottom plate 15, and reference numeral 17 denotes an exhaust port for discharging air provided on the back side of the lower machine chamber 5. Here, the lower machine chamber 5 is divided into two chambers by a partition wall 10, and a condenser 9 is housed on the windward side of the axial fan 11 and an evaporating dish 12 is housed on the leeward side.

  In the present embodiment, the axial fan 11 is disposed to be inclined toward the evaporating dish 12 side.

  About the refrigerator in Embodiment 1 of this invention comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

The axial fan 11 is driven in conjunction with the operation of the compressor 7. By driving the axial fan 11, the condenser 9 side of the lower machine chamber 5 partitioned by the partition wall 10 becomes negative pressure, external air is sucked from the intake port 16 provided in the bottom plate 15, and the evaporating dish 12 side is positive pressure. Thus, the air in the lower machine room 5 is discharged to the outside from the discharge port 17 provided on the back side of the lower machine room 5.

  At this time, evaporation of water stored in the evaporating dish 12 is promoted by drying with air heated by heat exchange with the condenser 9.

  In addition, by installing the compressor 7 on the upper back, the air path shape in the lower machine room 5 can be simplified in a straight line as compared with the conventional one in which the air path shape meanders in the lower machine room. The air path resistance of the lower machine room 5 can be suppressed, the temperature of the air discharged from the lower machine room 5 can be reduced, and the influence of the shortcut when the air is sucked again from the intake port 16 can be prevented. it can.

  Moreover, since air can flow through the condenser 9, the heat dissipation efficiency of the condenser 9 can be improved.

  In order to further suppress the air path resistance in the lower machine room 5, it is desirable to increase the R of the upper surface 18 of the lower machine room 5 and the bent portion 19 of the partition wall.

  Further, it is desirable to provide a wind direction rib 38 for directing the exhaust air upward at the exhaust port 17 so that the high-temperature air exhausted from the exhaust port 17 is not sucked from the intake port 16 again.

  Similarly, in order to close the gap between the refrigerator 1 and the wall between the discharge port 17 and the intake port 16, it is desirable to provide a protrusion on the outer wall of the refrigerator 1.

  At this time, the rotation center 34 of the axial fan 11 is disposed above the intake port 16 of the lower machine chamber 5, and the evaporating dish 12 is disposed below the rotation center 34 of the axial fan 11. Is inclined to the evaporating dish 12 side so that the air that has passed through the condenser 9 is forced to flow upward, and then the air path is meandered downward to cause the air to flow into the evaporating dish 12. Thereby, the flow of air passing through the condenser 9 is directed upward, so that the air path resistance of the condenser 9 as a whole is suppressed, and the warm and dry air that has passed through the condenser 9 is converted into the water surface inside the evaporating dish 12. By reliably guiding to the vicinity and increasing the wind speed on the water surface, evaporation of the stored water can be promoted while improving the heat dissipation capability of the condenser 9.

  In order to further promote the evaporation of the stored water in the evaporating dish 12, a part of the refrigerant pipe 20 is arranged inside the evaporating dish 12 and directly exchanges heat with the stored water, as in the conventional refrigerator. Also good.

  When the partition wall 10 and the axial fan 11 are installed on the leeward side of the condenser 9 and the evaporating dish 12, the positions of the condenser 9 and the axial fan 11 are separated, so that the air flow passing through the condenser 9 is changed. The horizontal direction from the front of the refrigerator 1 to the back is reduced, the heat dissipation capability of the condenser 9 is reduced, and the evaporating dish 12 disturbs the flow of air, resulting in a large airway resistance, and the entire air volume in the lower machine room 5 is reduced. It becomes a factor to decrease.

  The angle at which the axial fan 11 is tilted toward the evaporating dish 12 is preferably about 15 ° to 45 ° with respect to the bottom plate 15. If the angle at which the axial fan 11 is tilted toward the evaporating dish 12 is 45 ° or more with respect to the bottom plate 15, the air that has passed through the condenser 9 cannot be reliably guided to the vicinity of the water surface inside the evaporating dish 12, If the bottom plate 15 is 15 ° or less, the evaporating dish 12 disturbs the flow of air on the evaporating dish 12 side of the lower machine chamber 5 to cause a large airflow resistance, and the factor that the entire air volume in the lower machine chamber 5 is reduced. It becomes.

  Thereby, the improvement of the heat dissipation capability of the condenser 9 by suppressing the air path resistance in the lower machine chamber 5 and the promotion of the evaporation capability of the stored water can be achieved with a simple configuration.

  In addition, by arranging the wind direction plate 13 at the fan end 21 of the partition wall located above the evaporating dish 12, the air that has passed through the condenser is reliably guided near the water surface inside the evaporating dish 12, and the wind speed of the water surface By increasing the value, evaporation of the stored water in the evaporating dish 12 can be further promoted.

  The size in the width direction of the wind direction plate 13 is equal to or larger than the size in the width direction of the evaporating dish 12 so that the air that has passed through the condenser 9 can be reliably guided to the vicinity of the water surface inside the evaporating dish 12. Is desirable.

  Further, regarding the size of the wind direction plate 13 in the height direction, the position of the lower side of the wind direction plate 13 is preferably about the height of the rotation center 34 of the axial fan 11. When the position of the lower side of the wind direction plate 13 is equal to or higher than the height of the rotation center 34 of the axial fan 11, the air that has passed through the condenser 9 cannot be reliably guided to the vicinity of the water surface inside the evaporating dish 12. When the lower side of the wind direction plate 13 is less than or equal to the height of the rotation center 34, the wind direction plate 13 has a large air path resistance, which causes a reduction in the entire air volume in the lower machine room 5.

  Further, by disposing the axial fan support member 14 at the axial fan end 21 of the axial fan 11 and the partition wall 10, it is possible to prevent a gap from being generated between the upper surface 18 of the lower machine chamber 5 and the partition wall 10. The shortcut of the air on the windward side and the leeward side of the axial fan 11 can be suppressed.

  In addition, the size in the width direction of the axial fan support member 14 is desirably 0.5 times or less the width of the axial fan 11. When the width of the axial fan support member 14 is 0.5 times or more that of the axial fan 11, the axial fan support member 14 has a large air path resistance, and the overall air volume of the lower machine chamber 5 is reduced. Become. The axial fan support member 14 may be integrally formed with the partition wall 10, the evaporating dish 12, or the wind direction plate 13.

  Further, by providing a buffer member 33 between the upper portion of the partition wall 10 that partitions the lower machine chamber 5 and the upper surface 18 of the lower machine chamber 5, the gap between the partition wall 10 and the upper surface 18 of the lower machine chamber 5 is sealed. Therefore, it is possible to further prevent the air on the windward side and the leeward side of the axial flow fan 11 from being short-circuited, and the driving sound of the axial flow fan 11 passes through the partition wall 10 and the upper surface 18 of the lower machine room 5. Propagation can be prevented. The buffer member 33 is made of urethane foam or the like.

  In addition, by reducing the area of the air inlet 16 provided in the bottom plate 15 relative to the area of the air outlet 17 in the lower machine room 5, the air volume is reduced even when the air passage is blocked due to dust adhesion. The significant performance degradation of the condenser 9 due to can be suppressed. The area of the air inlet 16 provided in the bottom plate 15 is preferably about twice the area of the air outlet 17 in the lower machine room 5.

(Embodiment 2)
FIG. 4 is a longitudinal sectional view of the lower machine room of the refrigerator in the second embodiment of the present invention, and FIG. 5 is a rear view of the lower machine room of the refrigerator in the same embodiment.

  Here, the points different from the first embodiment will be mainly described.

4 and 5, reference numeral 111 denotes a lower machine chamber provided at the lower part of the casing, 22 denotes a partition wall that partitions the lower machine chamber 111, and 23 denotes an axial fan (fan) that is attached to the partition wall 22 and air-cools the condenser 9. , 24 are wind direction plates. The wind direction plate 24 protrudes downward from the upper surface 18 of the lower machine chamber 111 at a substantially right angle.

  In the present embodiment, the axial fan 23 is inclined to the opposite side of the evaporating dish 12. More specifically, it is inclined toward the condenser 9 side.

  About the refrigerator in Embodiment 2 of this invention comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  By driving the axial fan 23, the condenser 9 side of the lower machine chamber 111 partitioned by the partition wall 22 becomes negative pressure, the outside air is sucked from a plurality of intake ports 16 provided in the bottom plate 15, and the evaporating dish 12 side is A positive pressure is applied, and the air in the lower machine chamber 111 is discharged to the outside from the discharge port 17 provided on the back side of the lower machine chamber 111. At this time, the rotation center 35 of the axial fan 23 is disposed above the intake port 16 of the lower machine chamber 111, and the evaporating dish 12 is disposed below the rotation center 35 of the axial fan 23. Is inclined to the condenser 9 side, the flow of air passing through the condenser 9 can be directed upward, the air path resistance of the entire condenser 9 is suppressed, and a high heat dissipation capability is obtained.

  Further, by arranging the wind direction plate 24 above the evaporating dish 12, the air that has passed through the condenser 9 can meander downward, and the air can be reliably guided to the vicinity of the water surface inside the evaporating dish 12. The wind speed increases and the evaporation of the stored water can be promoted.

  The size in the width direction of the wind direction plate 24 is equal to or larger than the size in the width direction of the evaporating dish 12 so that the air that has passed through the condenser 9 can be reliably guided to the vicinity of the water surface inside the evaporating dish 12. Is desirable.

  Further, regarding the size of the wind direction plate 24 in the height direction, the position of the lower side of the wind direction plate 24 is preferably about the height of the rotation center 35 of the axial fan 23. When the position of the lower side of the wind direction plate 24 is equal to or higher than the height of the rotation center 35 of the axial fan 23, the air that has passed through the condenser 9 cannot be reliably guided to the vicinity of the water surface inside the evaporating dish 12. When the lower side of the wind direction plate 24 is equal to or lower than the height of the rotation center 35, the wind direction plate 24 becomes a large wind path resistance, which causes a reduction in the entire air volume in the lower machine chamber 111.

  The position of the wind direction plate 24 in the depth direction is more forward than the center of the evaporating dish 12 in the depth direction so that the air that has passed through the condenser 9 can be reliably guided to the vicinity of the water surface inside the evaporating dish 12. It is desirable to arrange.

  Further, by providing the buffer member 33 between the partition wall 22 that partitions the lower machine chamber 111 and the upper surface 18 of the lower machine chamber 111, the gap between the partition wall 22 and the upper surface 18 of the lower machine chamber 111 can be sealed. Therefore, it is possible to further prevent the air on the windward side and the leeward side of the axial flow fan 23 from being short-circuited, and the driving sound of the axial flow fan 23 propagates to the upper surface 18 of the lower machine chamber 111 via the partition wall 22. Can be prevented.

  In addition, by reducing the area of the air inlet 16 provided in the bottom plate 15 with respect to the area of the air outlet 17 in the lower machine chamber 111, the air volume is reduced even when the air passage is blocked due to dust adhesion. The significant performance degradation of the condenser 9 due to can be suppressed.

  The area of the air inlet 16 provided in the bottom plate 15 is preferably about twice the area of the air outlet 17 in the lower machine chamber 111.

  Note that, as in the present embodiment, the axial fan 23 is disposed to be inclined to the opposite side of the evaporating dish 12 (more specifically, to the condenser 9 side), so that the condenser 9 By directing the air flow on the side upward, a larger amount of external air can be taken in and the heat dissipation capability of the condenser 9 can be further improved.

(Embodiment 3)
FIG. 6 is a longitudinal sectional view of the lower machine room of the refrigerator according to the third embodiment of the present invention, and FIG. 7 is a rear view of the lower machine room of the refrigerator according to the same embodiment.

  Here, the points different from the first and second embodiments will be mainly described.

  6 and 7, reference numeral 25 denotes a lower machine chamber provided at the lower part of the housing, 26 denotes a partition wall that partitions the lower machine chamber 25, and 27 denotes an axial fan (fan) that is attached to the partition wall 26 and air-cools the condenser 9. , 28 are wind direction plates.

  In the present embodiment, the axial fan 11 is erected in a substantially perpendicular direction with respect to the bottom plate 15.

  About the refrigerator in Embodiment 3 of this invention comprised as mentioned above, the operation | movement * effect | action is demonstrated below.

  By driving the axial fan 27, the condenser 9 side of the lower machine chamber 25 partitioned by the partition wall 26 becomes negative pressure, external air is sucked from a plurality of intake ports 16 provided in the bottom plate 15, and the evaporating dish 12 side is The air in the lower machine chamber 25 becomes positive pressure and is discharged to the outside from the discharge port 17 provided on the back side of the lower machine chamber 25. At this time, by arranging the rotation center 36 of the axial fan 27 upward with respect to the intake port 16 of the lower machine room 25 and the evaporating dish 12 downward with respect to the rotation center 36 of the axial fan 27, the condenser The air flow passing through 9 can be directed upward, the air path resistance of the entire condenser 9 is suppressed, and a high heat dissipation capability is obtained.

  Further, by disposing the wind direction plate 28 on the top of the evaporating dish 12, the air that has passed through the condenser 9 can be meandered downward, and the air can be reliably guided to the vicinity of the water surface inside the evaporating dish 12. The wind speed increases and the evaporation of the stored water can be promoted.

  The size in the width direction of the wind direction plate 28 is equal to or larger than the size in the width direction of the evaporating dish 12 so that the air that has passed through the condenser 9 can be reliably guided to the vicinity of the water surface inside the evaporating dish 12. Is desirable.

  Further, regarding the size of the wind direction plate 28 in the height direction, the position of the lower side of the wind direction plate 28 is preferably about the height of the rotation center 36 of the axial fan 27. When the position of the lower side of the wind direction plate 28 is equal to or higher than the height of the rotation center 36 of the axial fan 27, the air that has passed through the condenser 9 cannot be reliably guided to the vicinity of the water surface inside the evaporating dish 12. When the lower side of the wind direction plate 28 is equal to or less than the height of the rotation center 36, the wind direction plate 28 becomes a large wind path resistance, which causes a reduction in the entire air volume in the lower machine room 25.

  The position of the wind direction plate 28 in the depth direction is more forward than the center of the evaporating dish 12 in the depth direction so that the air that has passed through the condenser 9 can be reliably guided to the vicinity of the water surface inside the evaporating dish 12. It is desirable to arrange.

Further, by providing the buffer member 33 between the partition wall 26 that partitions the lower machine chamber 25 and the upper surface 18 of the lower machine chamber 25, the gap between the partition wall 26 and the upper surface 18 of the lower machine chamber 25 can be sealed. Therefore, it is possible to further prevent the air on the leeward side and the leeward side of the axial flow fan 27 from being short-circuited, and the driving sound of the axial flow fan 27 propagates to the upper surface 18 of the lower machine room 25 via the partition wall 26. Can be prevented.

  In addition, by increasing the area of the air inlet 16 provided in the bottom plate 15 relative to the area of the air outlet 17 in the lower machine room 25, the air volume is reduced even when the air passage is blocked due to dust adhesion. The significant performance degradation of the condenser 9 due to can be suppressed. The area of the air inlet 16 provided in the bottom plate 15 is preferably about twice the area of the air outlet 17 in the lower machine chamber 25.

  Note that, as in the present embodiment, the axial fan 27 is erected in a substantially perpendicular direction with respect to the bottom plate 15, thereby simplifying the shape of the air path in the lower machine chamber 5 more linearly. It is possible to further improve the heat dissipation capability of the condenser 9 by suppressing the air path resistance of the lower machine chamber 5.

(Embodiment 4)
FIG. 8 is a longitudinal sectional view of the lower machine room of the refrigerator in the fourth embodiment of the present invention, and FIG. 9 is a rear view of the lower machine room of the refrigerator in the same embodiment.

  Here, the points different from the first, second, and third embodiments will be mainly described.

  8 and 9, reference numeral 29 denotes a lower machine chamber provided in the lower part of the casing, 30 denotes a partition that partitions the lower machine chamber 29, and 31 denotes a cross-flow fan (cross flow fan that is attached to the partition 30 and cools the condenser 9 by air. Fan).

  About the refrigerator in Embodiment 4 of this invention comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  By driving the cross flow fan 31, the condenser 9 side of the lower machine chamber 29 partitioned by the partition wall 30 becomes negative pressure, and external air is sucked from a plurality of intake ports 16 provided in the bottom plate 15, and the evaporating dish 12 side is The air in the lower machine chamber 29 becomes positive pressure and is discharged to the outside through the discharge port 17 provided on the back side of the lower machine chamber 29. At this time, the air passing through the condenser 9 is arranged by disposing the evaporating dish 12 below the rotation center 37 of the crossflow fan 31 upward and the rotation center 37 of the crossflow fan 31 relative to the intake port 16. Is forced to flow upward, and air is caused to flow inside the evaporating dish 12 via the cross flow fan 31. Thereby, the flow of air passing through the condenser 9 is directed upward, so that the air path resistance of the condenser 9 as a whole is suppressed, and the warm and dry air that has passed through the condenser 9 is converted into the water surface inside the evaporating dish 12. By reliably guiding to the vicinity and increasing the wind speed on the water surface, evaporation of the stored water can be promoted while improving the heat dissipation capability of the condenser 9.

  The size in the width direction of the cross flow fan 31 is equal to or greater than the size in the width direction of the evaporating dish 12 so that the air that has passed through the condenser 9 can surely flow over the entire water surface in the evaporating dish 12. Is desirable.

  Further, the position of the discharge port 32 of the cross flow fan 31 is preferably above the front side of the evaporating dish 12 so that the air that has passed through the condenser 9 can flow reliably over the entire water surface in the evaporating dish 12.

Further, by providing the buffer member 33 between the partition wall 30 that partitions the lower machine chamber 29 and the upper surface 18 of the lower machine chamber 29, the gap between the partition wall 30 and the upper surface 18 of the lower machine chamber 29 can be sealed. Therefore, it is possible to further prevent the air on the windward side and the leeward side of the crossflow fan 31 from being short-circuited, and the driving sound of the crossflow fan 31 propagates to the upper surface 18 of the lower machine chamber 29 via the partition wall 30. Can be prevented.

  Further, by increasing the area of the air inlet 16 provided in the bottom plate 15 with respect to the area of the air outlet 17 of the lower machine chamber 29, even when the air passage is blocked due to dust adhesion, the air volume is reduced. A significant decrease in condenser performance can be suppressed. The area of the air inlet 16 provided in the bottom plate 15 is preferably about twice the area of the air outlet 17 in the lower machine chamber 29.

  As in the present embodiment, by using the cross flow fan 31, the warm and dry air that has passed through the condenser 9 can be guided to the entire width direction of the evaporating dish 12, and the evaporation of the stored water is promoted. be able to.

  As described above, the refrigerator of the present invention is a refrigerator having a lower machine room, a condenser, a fan installed on the leeward side of the condenser and serving as a main driving source of the blower circuit, the condenser and the fan. The evaporating dish installed on the leeward side is housed in the lower machine room, and the rotation center of the fan is disposed above the intake port of the lower machine room, and the evaporating dish is placed below the rotation center of the fan. It is arranged.

  As a result, the air path resistance in the lower machine room can be suppressed and the heat dissipation capacity of the condenser can be improved, the evaporation of the stored water is promoted, and the evaporating dish is arranged in a space-saving manner, so that the condenser and fan Can be increased in size and energy can be saved by further improving the heat dissipation capability.

  As described above, in the refrigerator according to the present invention, in the refrigerator in which the condenser is air-cooled by a fan, the air path resistance in the lower machine room can be suppressed, the heat radiation capacity of the condenser can be improved, and the stored water can be evaporated. By arranging the evaporating dish in a space-saving manner, it is possible to increase the size of the condenser and fan, and further improve the heat dissipation capacity of the condenser to save energy, so that other freezing and refrigeration applications such as vending machines can be used. It can also be applied to products.

DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Case 5, 25, 29, 111 Lower machine room 6 Upper machine room 9 Condenser 10, 22, 26, 30 Bulkhead 11, 23, 27 Axial fan (fan)
DESCRIPTION OF SYMBOLS 12 Evaporating dish 13, 24, 28 Wind direction plate 14 Axial fan support member 16 Intake port 17 Outlet port 31 Cross flow fan 33 Buffer member 34, 35, 36, 37 Fan rotation center

Claims (6)

In a refrigerator having a lower machine room, a condenser, a fan installed on the leeward side of the condenser and serving as a main driving source of the blower circuit, and an evaporating dish installed on the leeward side of the condenser, A refrigerator that is housed in a room, the rotation center of the fan is disposed above the air inlet of the lower machine room, and the evaporating dish is disposed below the rotation center of the fan. In a refrigerator having a lower machine room, a condenser, a fan installed on the leeward side of the condenser and serving as a main driving source of the blower circuit, and an evaporating dish installed on the leeward side of the condenser, A refrigerator that is housed in a room and forcibly causes the air that has passed through the condenser to flow upward, then causes the air passage to meander downward, and causes the air to flow inside the evaporating dish. The refrigerator according to claim 1, wherein a wind direction plate is disposed above the evaporating dish. The partition which divides the said condenser side and the said evaporating dish side, and the said fan attached to the said partition are provided, The fan support member has been arrange | positioned to the fan part of the said partition. Refrigerator. The refrigerator according to claim 4, wherein a buffer member is provided between the partition wall and the upper surface of the lower machine room. The refrigerator according to any one of claims 1 to 5, wherein an area of the intake port is made larger than an area of an air discharge port in the lower machine room.