JP2019113245A - refrigerator - Google Patents

Abstract

To provide a refrigerator which can secure an amount of drain water evaporated from an evaporation dish even if heat for evaporating the drain water on the evaporation dish is not obtained due to energy saving and a cooling fan cannot be installed in a machine room.SOLUTION: A refrigerator 1 includes: a compressor 50 provided at a machine room 12; and an evaporation dish 20 disposed on the compressor 50. The refrigerator 1 includes: an atomizer 30 which is provided within the evaporation dish 20 and atomizes drain water by energization; and space securing means (an evaporation dish) 20 which forms a space S in which the drain water atomized by the atomizer 30 moves up along the back surface side of the refrigerator 1.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a refrigerator, and more particularly to a refrigerator provided with an atomizing device in a machine room.

  Heretofore, a refrigerator has been proposed which achieves energy saving by increasing the efficiency of the compressor and reducing the amount of heat generation by the compressor (for example, Patent Document 1). Moreover, the refrigerator which is achieving energy saving is also proposed by extending the length of a capacitor and lowering | hanging condensation temperature.

Unexamined-Japanese-Patent No. 2010-038483

  However, when energy saving is attempted by increasing the efficiency of the compressor as in Patent Document 1, sufficient heat for evaporating drain water can not be obtained from the compressor.

  Water discharged during defrosting of frost adhering to the evaporator is stored as drainage water in the evaporation pan, but if the heat from the compressor can not be sufficiently obtained, the evaporation pan lacks the ability to evaporate water I will. Therefore, when the door is opened and closed many times, or when a large amount of water-rich food is put into the refrigerator, the drain drainage amount exceeds the transpiration ability, and the drain water overflows from the evaporation dish.

  In particular, in the case of a small or medium-sized refrigerator, it is not possible to install a device such as a cooling fan next to the compressor from the viewpoint of reducing the manufacturing cost or from the limitation of the housing size. It may be installed at the top of the compressor. In this case, in order to evaporate drain water in the evaporation pan, the compressor must be used exclusively as a heat source, and the above-mentioned problems become significant.

  Therefore, the object of the present invention is to solve the above-mentioned problems, and energy saving makes it impossible to obtain the heat for evaporating the drain water of the evaporating dish and the evaporating dish can not be installed in the machine room. It is providing the refrigerator which can secure the evaporation of drain water from water.

  One aspect of the refrigerator according to the present invention is a refrigerator having a compressor provided in a machine room and an evaporation dish disposed at the upper portion of the compressor, provided in the evaporation dish and drained by electric conduction. It is characterized by comprising: an atomizing device for atomizing; and space securing means for forming a space in which drain water atomized by the atomizing device rises along the back side of the refrigerator.

  In the present invention, the “atomizing device” is a device that operates by energization to atomize drain water, and includes, for example, a device provided with an ultrasonic transducer. Hereinafter, the same applies in the present specification.

  According to one aspect of the refrigerator of the present invention, since the evaporation pan is disposed at the top of the compressor, the heat released from the top of the compressor can evaporate part of the drain water in the evaporation pan. Moreover, the drain water in the evaporation dish is atomized by energizing the atomizing device. Therefore, energy saving makes it possible to secure the evaporation amount of drain water in the evaporation pan even when sufficient heat can not be obtained from the compressor. Further, the space securing means forms, on the back side of the refrigerator, a space where the drain water atomized by the atomization device rises along the back side of the refrigerator. Therefore, the atomized drain water is discharged to the back side of the refrigerator behind the compressor, and the rising air flow rises in the space on the back side of the refrigerator, so that the transpiration performance of the drain water can be improved.

  In another aspect of the refrigerator according to the present invention, the space securing means may be the evaporation tray installed to project rearward beyond a back surface of the refrigerator in a side view of the refrigerator. According to this aspect, since the evaporation dish is installed to project rearward than the back of the refrigerator, the projection of the evaporation dish functions as a space securing means when installing the refrigerator, and the back side of the refrigerator Space is formed in As a result, the drain water atomized by the atomization device is discharged to the back side of the refrigerator, and the rising air flow rises in the space on the back side of the refrigerator, so that the transpiration performance of the drain water can be improved.

  In another aspect of the refrigerator according to the present invention, the atomizing device may be provided at the rearwardly projecting portion of the evaporating dish. According to this aspect, a space is formed above the atomization device, and there is no object blocking the atomized drain water. Therefore, the drain water atomized by the atomization device is smoothly discharged to the back side of the refrigerator, and the rising air flow rises in the space on the back side of the refrigerator, so that the transpiration performance of the drain water can be improved.

  In another aspect of the refrigerator according to the present invention, the back of the refrigerator may be obliquely formed such that a portion close to the end on the back side of the evaporating dish faces the end. According to this aspect, even when the evaporating dish is not disposed so as to protrude from the back of the refrigerator, the back of the portion close to the end on the back side of the evaporating dish is formed obliquely to face this end It is done. Therefore, the drain water atomized by the atomization device is discharged to the back side of the refrigerator along the back surface of this obliquely formed part, and the rising air flow rises in the space on the back side of the refrigerator. It is possible to improve the transpiration performance.

  According to the other aspect of the refrigerator of this invention, the electricity supply to the said atomization apparatus may be performed over the fixed time after defrosting. According to this aspect, the energization to the atomization device is not always performed, but is performed for a certain period of time after defrosting in which drain water by defrosting is accumulated in the evaporation dish. Therefore, the power consumption of the atomization device can be suppressed.

  Further, the present invention is characterized in that the atomizing device is covered by a cover member so as not to contact the outer surface of the refrigerator.

  According to the present invention, for example, a cover member formed by squeezing an iron plate in a concave shape is provided, and a portion of the atomizing device located outside the evaporation dish is covered by the cover member squeezed in a concave shape, It has a structure that can not contact the atomizer from the bottom side of the evaporation pan. In this way, it is possible to prevent the function of the atomizing device from being stopped due to a rat or cockroach or the like from the bottom side of the evaporation dish. In addition, the machine room is covered with a metal cover member, and can not contact the atomization device from the back side of the refrigerator where the machine room is located, so that the atomization device does not come in contact with the refrigerator outer surface ing. Although a predetermined high voltage is applied to the atomizing device, the atomizing device is not in contact with the outer surface of the refrigerator as described above, so that the user etc. may accidentally touch the atomizing device. Can be prevented.

  As described above, in the present invention, due to energy saving, the heat for evaporating the drain water of the evaporating dish can not be obtained from the outside, and even if the cooling fan can not be installed in the machine room, the evaporation of the drained water from the evaporating dish You can secure the quantity.

It is a perspective view showing the refrigerator concerning a 1st embodiment of the present invention. It is an A-A 'line sectional view shown in FIG. It is a schematic diagram for demonstrating the refrigerating cycle which concerns on the 1st Embodiment of this invention. It is a schematic diagram which shows the machine room of the refrigerator shown in FIG. It is a perspective view which shows the evaporating dish of the refrigerator shown in FIG. It is the F-F 'sectional view shown in FIG. It is an enlarged view of the atomization apparatus in FIG. 6, and its periphery. It is sectional drawing which shows the refrigerator which concerns on the 2nd Embodiment of this invention, and is an E-E 'line sectional view shown in FIG. It is a schematic diagram which shows the machine room of the refrigerator shown in FIG.

First Embodiment
FIG. 1 is a perspective view showing a refrigerator 1 according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view taken along line AA 'shown in FIG. FIG. 3 is a schematic view for explaining a refrigeration cycle according to the first embodiment of the present invention. FIG. 4 is a schematic view showing a machine room of the refrigerator 1 shown in FIG. FIG. 5 is a perspective view showing the evaporating dish 20 of the refrigerator 1 shown in FIG. FIG. 6 is a broken view of line FF ′ shown in FIG. 5. FIG. 7 is an enlarged view of the atomizing device in FIG. 6 and the periphery thereof. The outline of the refrigerator 1 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 7.

(Description of the refrigerator according to the first embodiment of the present invention)
The refrigerator 1 according to the first embodiment of the present invention includes a refrigerator body 2. The refrigerator main body 2 is provided with the storage 10 comprised from the refrigerator compartment 4, the freezer compartment 5, and the storage compartment 6, as shown in FIG. The refrigerator compartment 4, the freezer compartment 5 and the storage compartment 6 are separated by a heat insulating partition 7. Usually, the refrigerator compartment 4 and the storage compartment 6 are kept at a temperature of 0 to 10 ° C, and the freezer compartment 5 is kept at a temperature around -18 ° C. The refrigerator compartment 4, the freezer compartment 5, and the storage compartment 6 have an opening on the front side of the refrigerator body 2 so that food and the like stored in each compartment can be taken in and out.

  The opening of the refrigerator compartment 4, the freezer compartment 5 and the storage compartment 6 can be opened and closed by the single-opening upper door 3a, the pull-out middle door 3b and the lower door 3c provided at the front of the refrigerator body 2. ing.

  The refrigerator main body 2 is comprised from the outer case 2a, the inner case 2c, and the heat insulating material 2b. The outer case 2a is formed of a steel plate. The inner case 2c is formed of a synthetic resin, and disposed in the outer case 2a with a gap from the outer case 2a. The heat insulating material 2b is formed of foamed polyurethane, and is filled in the gap between the outer case 2a and the inner case 2c.

  A cooling chamber 11 for accommodating the evaporator 14 is provided at the back of the freezing chamber 5, and a partition plate 8 for partitioning the freezing chamber 5 and the cooling chamber 11 is provided between the freezing chamber 5 and the cooling chamber 11. It is equipped. The partition plate 8 is formed with a fan (not shown) for circulating cold air in the storage and an air passage (not shown). Further, an air passage damper 17 is formed on the evaporator 14. Further, below the evaporator 14, a defrosting heater 13 to be energized at the time of defrosting and a saucer 15 to drain drain water are provided. The drain water in the tray 15 is drained to the evaporation tray 20 described later by the drain pipe 60 through the opening 15 a provided in the tray 15.

  A machine room 12 is provided at the lower part of the refrigerator 1 and at the back side of the storage room 6. In the machine room 12, a compressor 50 for compressing the refrigerant is disposed. The above-described evaporator 14 is connected to the compressor 50, a radiator (not shown), a capillary tube (not shown) and the like via a refrigerant pipe, and constitutes a vapor compression refrigeration cycle. Details of the refrigeration cycle will be described later.

  At the top of the compressor 50, an evaporation pan 20 is disposed. An opening is formed in the lower inner box 2c of the defrosting heater 13. The opening penetrates the inner box 2c, the heat insulating material 2b, and the outer box 2a, and the drain pipe 60 protrudes from the outer box 2a. It is connected with one end. The other end of the drain pipe 60 is disposed to face the evaporation pan 20. When defrosting of the evaporator 14 is performed by the defrosting heater 13, the frost melts and becomes water, and the water is discharged as drain water from the opening provided at the lower part of the defrosting heater 13 through the drain pipe 60, It is stored in the evaporating dish 20.

  Inside the evaporating dish 20, an atomizing device 30 is disposed. The atomization device 30 includes, for example, an ultrasonic transducer that operates by energization. The atomization device 30 is connected to a control unit (not shown in FIG. 2), and the control unit causes the atomization device 30 to be energized for a predetermined time after defrosting of the evaporator 14. When the ultrasonic transducer of the atomization device 30 is energized, the ultrasonic transducer vibrates and vibrates drain water stored in the evaporation plate 20 to generate mist (fine particles). This mist is discharged above the evaporating dish 20 as shown by the arrow B in FIG. 2, and the drain water stored in the evaporating dish 20 is evaporated. The details of the evaporating dish 20 and the atomizing device 30 will be described later.

(Description of the refrigeration cycle)
FIG. 3 is a schematic view for explaining a refrigeration cycle according to one embodiment of the present invention. FIG. 4 is a schematic view showing a machine room of the refrigerator shown in FIG. Next, a refrigeration cycle according to an embodiment of the present invention will be described with reference to FIGS. 3 and 4.

  As shown in FIGS. 3 and 4, the compressor 50 is connected to the evaporation condenser 51 via the discharge pipe 40. The compressor 50 compresses the refrigerant turned into a gas by the evaporator 14 into a high temperature / high pressure gas, and discharges it to the evaporation condenser 51 through the discharge pipe 40. In FIG. 4, the discharge piping 40 and the evaporation condenser 51 are not shown.

  The evaporation condenser 51 is formed in a meandering shape by being folded back in a plurality of directions in the evaporation dish 20, and is disposed so as to be immersed in drain water. The high temperature and high pressure refrigerant discharged from the compressor 50 flows into the evaporation condenser 51 through the discharge pipe 40 and exchanges heat with the drain water stored in the evaporation pan 20. Therefore, the condensation capacity of the evaporation condenser 51 can be improved, and evaporation of drain water is promoted. The evaporation condenser 51 is connected to the heat radiation condenser 52 and discharges the condensed refrigerant to the heat radiation condenser 52.

  The heat dissipation capacitor 52 is a fin-and-tube type capacitor in which a large number of fins are attached to a metal tube which is folded in a U-shape at both ends in the width direction and formed in a serpentine shape. In FIG. 4, the heat dissipation capacitor 52 is not shown. The heat radiation condenser 52 further condenses the refrigerant sent from the evaporation condenser 51 to make it a liquid refrigerant at normal temperature and high pressure.

  The outlet of the heat dissipation capacitor 52 is connected to the pipe 41, and the pipe 41 is connected to the crest capacitor 55. Although not shown in FIGS. 1, 2 and 4, the crest capacitor 55 is fixed to the surface of the outer case 2a on the side of the heat insulating material 2b by an aluminum foil tape or the like. The crest condenser 55 is meandering piping on the left and right side surfaces and the upper surface on the heat insulating material 2b side of the outer case 2a, and is also provided at the opening peripheral portion of the outer case 2a to prevent condensation on the opening peripheral portion of the outer case 2a. .

  The crest condenser 55 is connected to the condensation prevention pipe 42. Although the dew condensation preventing pipe 42 is not shown in FIG. 2, the dew condensation preventing pipe 42 is disposed on at least a part of the periphery of the opening on the front side of the storage 10. Condensation around the opening on the front side of the is prevented.

  The outlet of the condensation prevention pipe 42 is connected to the dehydrator 56. A desiccant is enclosed in the dehydrator 56, and the moisture of the refrigerant flowing from the dew condensation preventing pipe 42 is removed by the desiccant. In FIG. 2, the dehydrator 56 is not shown.

  The outlet of the dehydrator 56 is connected to the capillary tube 43. The capillary tube 43 is a tube with a thin tube diameter, and the refrigerant expands in the capillary tube so that the pressure is reduced to be in a gas-liquid two-phase state. The illustration of the capillary tube 43 is omitted in FIG.

  The outlet of the capillary tube 43 is connected to the evaporator 14. The evaporator 14 is a so-called fin and tube type heat exchanger in which the inside of a circular pipe as a heat transfer pipe is a refrigerant flow path and the outside of the pipe is an air flow path. In the evaporator 14, the inside of the heat transfer tube is in a gas-liquid two-phase state, and the air outside the tube is cooled by the evaporation of the liquid refrigerant. Of course, as the evaporator 14, it is also possible to adopt other types of heat exchangers, for example, heat exchangers using flat perforated pipes or irregularly shaped pipes.

  When the periphery of the evaporator 14 is cooled, the cold air cools the inside of the freezer compartment 5, and the cold air is stored in the refrigerator compartment 4 and the storage via the air passage damper 17 and the flow path provided in the storage case 10. It is also supplied to the chamber 6.

The outlet of the evaporator 14 is connected to a suction pipe 44. Although not shown in FIG. 2, the suction pipe 44 is disposed in a meandering manner on the back of the refrigerating chamber 4 and the freezing chamber 5, and the outlet of the suction pipe 44 is connected to the compressor 50. The refrigerant turned to a gas in the evaporator 14 is sucked into the compressor 50 through the suction pipe 44 by the operation of the compressor 50.
In the present embodiment, the refrigeration cycle is formed as described above.

  Note that both of the evaporation capacitor 51 and the heat dissipation capacitor 52 or any one of them can be omitted. Even when these condensers are not provided, by providing the atomization device 30, the drain water in the evaporation dish 20 is atomized as described later to generate a mist, so the drain water in the evaporation dish 20 is surely made. It can be evaporated.

(Description of evaporation tray and atomizer)
Next, the evaporation tray 20 and the atomizing device 30 according to the first embodiment of the present invention will be described in more detail.

  As shown in FIG. 2, in a side view of the refrigerator 1, the evaporating dish 20 is disposed so as to protrude rearward, that is, in the Y direction side, from the back surface 2 a-1 of the outer case 2 a. The evaporation dish 20 is provided with an extension 20d extending in the Y direction from a position along the back surface 2a-1 of the refrigerator 1, and the extension 20d is a portion that protrudes to the Y direction side more than the back surface 2a-1. ing.

  The atomization device 30 is disposed in the inside of the evaporation tray 20 and in a portion protruding to the Y direction side with respect to the back surface 2a-1, that is, the extension portion 20d. Based on the compressor 50, the atomization device 30 is disposed rearward of the compressor 50 in a side view of the refrigerator 1.

  Therefore, when arranging the refrigerator 1 close to the wall surface 70 in the room as shown in FIG. 2, the extending portion 20 d is formed on the evaporation plate 20, so the back surface 2 a-1 and the wall surface 70 of the refrigerator 1 A space S having a distance of W in the Y direction is formed between them. That is, in the present embodiment, the evaporation pan 20 functions as a space securing means.

  As shown in FIG. 5, the evaporation pan 20 is a box made of resin with an open top in the Z direction, and the recess 20 b of the bottom 20 a facing the top of the compressor 50 has an upper surface of the top surface of the compressor 50. Along the shape, it is a curved recess. The evaporation pan 20 is provided with a small pan 20c at the top of the recess 20b. The drain water discharged from the drain pipe 60 is first stored in the small plate 20c, and the drain water overflowing from the small plate 20c is stored in the surrounding bottom portion 20a.

  Further, the evaporation pan 20 is provided with an extending portion 20d obtained by extending the bottom portion 20a in the Y direction. As shown in FIGS. 5 and 6, the bottom portion 20a of the evaporating dish 20 has an inclined surface which is higher on the front side plate 20f side of the evaporating dish 20 and lower on the extended portion 20d side. The bottom portion 20a forming the extension portion 20d has a horizontal surface which is horizontal to the floor surface on which the refrigerator 1 is placed when the evaporation dish 20 is attached to the refrigerator 1. As shown in FIGS. 5 and 6, the bottom 20a forming the extension 20d is provided with a recess 20e which is one step lower than the horizontal surface, and the recess 20e is provided with a circular opening 20g. It is done. The atomizing device 30 is provided to expose a mechanical surface for atomizing water from the opening 20 g.

  The atomization device 30 includes, for example, an ultrasonic transducer that operates by energization. The atomization device 30 is connected to a control unit (not shown) accommodated in the substrate case 16 shown in FIG. By the control in the control unit, application of a predetermined high voltage is performed on the atomization device 30 for a predetermined time after defrosting of the evaporator 14.

  6 is a cross-sectional view of the evaporating dish 20 to which the atomizing device 30 is attached, and FIG. 7 is a partially enlarged cross-sectional view of a portion of the evaporating dish 20 to which the atomizing device 30 is attached. As described above, the bottom portion 20a forming the extension portion 20d of the evaporating dish 20 is formed with the recessed portion 20e which is one step lower than the horizontal surface. Therefore, the drain water stored in the evaporating dish 20 flows through the inclined surface of the bottom portion 20a, and is most easily accumulated in the concave portion 20e formed in the extension portion 20d. In the present embodiment, the atomization device 30 is attached to the recessed portion 20 e where the drain water is most easily accumulated as described above.

  In the present embodiment, as shown in FIG. 7, the atomization device 30 is attached to the bottom portion 20 a forming the concave portion 20 e with a screw 32 or the like via a sealing material 33. At this time, the atomization device 30 is attached to the bottom portion 20 a so that the mechanical surface for atomizing water of the atomization device 30 is exposed from the opening 20 g formed in the bottom portion 20 a.

  In addition, for the portion to which the atomizing device 30 is attached, the atomizing device 30 is covered from the outside of the evaporating dish 20 by a cover member 75 formed by squeezing an iron plate in a concave shape. The cover member 75 is attached to the bottom portion 20 a forming the concave portion 20 e by screwing with a screw 32 or the like. Therefore, from the bottom side of the evaporating dish 20, the atomizing device 30 can not be contacted. Thereby, the function stop of the atomization apparatus 30 by the mouse | mouth, a cockroach, etc. from the bottom side of the evaporating dish 20 can be prevented. The machine room 12 is covered with a metal cover (not shown) and can not contact the atomization device 30 even from the back side of the refrigerator where the machine room is located. The atomization device 30 is in contact with the refrigerator outer surface It does not have a structure. Although a predetermined high voltage is applied to the atomizing device 30, the atomizing device 30 has a structure not in contact with the outer surface of the refrigerator as described above. Can be prevented. In addition, since the cover member 75 is provided, even if there is no cover of the machine room 12, the structure can not contact the atomization device 30, and the user etc. are prevented from touching the atomization device 30 by mistake. can do.

  When the ultrasonic vibrator of the atomization device 30 is energized in a state where drain water is stored in the evaporation dish 20, the ultrasonic vibrator vibrates to vibrate the drain water stored in the evaporation dish 20. As a result, mists (fine particles) are generated, and the mists are discharged above the evaporation pan 20 as shown by arrows B in FIGS. 2, 4 and 5.

  In order to evaporate the drain water in the evaporating dish 20, the heat from the compressor 50 is also used. However, in the present embodiment, the length in the width direction (X direction) of the machine room 12 is limited, and it is difficult to arrange the evaporation pan 20 beside the compressor 50. Also, the heat from the compressor 50 is mainly dissipated from the upper surface of the compressor 50. So, in the refrigerator 1 of this embodiment, the evaporating dish 20 is arrange | positioned above the compressor 50. As shown in FIG. However, in order to avoid the vibration of the compressor 50, the bottom 20a of the evaporation pan 20 has a predetermined gap with the top of the compressor 50. By arranging the evaporating dish 20 in this way, the drain water in the evaporating dish 20 is partially dissipated by the heat released from the top of the compressor 50.

  However, in the present embodiment, a high efficiency compressor is used as the compressor 50 for energy saving. The high efficiency compressor 50 has less mechanical loss and less heat is released from the compressor 50 than ever before.

  Therefore, in the present embodiment, the atomization device 30 is disposed inside the evaporation plate 20, and the ultrasonic transducers of the atomization device 30 are energized to store in the evaporation plate 20 by the vibration of the ultrasonic transducers. The drain water is vibrated to generate mist (fine particles).

  When a highly efficient compressor is used as the compressor 50, the heat from the compressor 50 alone can not sufficiently evaporate the drain water in the evaporation pan 20. However, in the present embodiment, the drain water in the evaporating dish 20 is atomized by the atomizing device 30 to generate mist, so that the drain water in the evaporating dish 20 can be surely evaporated.

  In particular, the atomization device 30 is disposed on an extension 20d of the evaporation pan 20 projecting to the outside (the Y direction side) of the back surface 2a-1, and this extension 20d makes the back surface 2a-1 of the refrigerator 1 A space S with a space W is formed between the wall 70 and the wall 70. Therefore, the drain water atomized by the atomization device 30 becomes mist and ascends along the back surface 2a-1 of the refrigerator 1 as indicated by the arrow B in the space S of the interval W. As a result, the rising air flow rises on the back surface 2a-1 of the refrigerator 1, and the transpiration performance for the drain water stored in the evaporation pan 20 can be improved, and the drain water in the evaporation pan 20 can be surely transpired. it can. In particular, when the size of the machine room 12 is limited as in the present embodiment and the cooling fan can not be installed, the mist can not be released using the flow of air by the cooling fan. Therefore, the atomization device 30 is disposed on the extension 20d of the evaporation pan 20 projecting to the outside (the Y direction side) from the back surface 2a-1, and the space S of the space W between the back surface 2a-1 and the wall surface 70 The configuration for securing the key is extremely important in the refrigerator 1 as in the present embodiment.

  According to the refrigerator 1 of this embodiment, even when the door is opened or closed, or when a large amount of water-rich food is put in the refrigerator 1, even if the drain drainage amount increases, the inside of the evaporation tray 20 is surely ensured. Drain water can be evaporated, and drain water can be prevented from overflowing from the evaporation plate 20.

  As in the refrigerator 1 of the present embodiment, the size of the machine room 12 is limited, and there is no large space between the upper portion of the compressor 50 and the outer box 2 a of the refrigerator 1. (Depth in the -Z direction) can not be increased. However, as described above, the evaporation pan 20 includes the recess 20b formed along the surface of the compressor 50 from the front side to the rear side in the Y direction, and the bottom 20a of the evaporation pan 20 is the front side plate 20f. It has a slope which is high on the side and low on the side of the extension 20d. And the atomization apparatus 30 is installed so that the mechanism surface which atomizes water from the opening part 20g of the concave part 20e formed in the horizontal surface of the extension part 20d may be exposed. Therefore, the drain water tends to be accumulated in the extension 20d in which the opening 20g is formed, and the atomization device 30 vibrates a sufficient amount of the drain water to reliably generate a mist in the arrow B direction. Can.

  As described above, both of the evaporation capacitor 51 and the heat dissipation capacitor 52 or any one of them can be omitted. However, even if these condensers are not provided, the provision of the atomizing device 30 atomizes the drain water in the evaporating dish 20 to generate mist, thereby reliably transpiration the drain water in the evaporating dish 20 be able to.

  If the atomization device 30 is operated in a state not in contact with drain water in the evaporation pan 20, there is a risk that it may lead to failure. However, in the present embodiment, as described above, the bottom 20a of the evaporation pan 20 has an inclined surface which is high on the front side plate 20f side and low on the extension 20d side. Furthermore, in the extension portion 20d having a horizontal surface, a concave portion 20e which is one step lower than the horizontal surface is formed. Therefore, with this configuration, even when there is little drain water, the drain water is likely to be collected in the concave portion 20e, and the atomization device 30 and the drain water in the evaporation pan 20 are not in contact with each other. Can be prevented.

  Further, in the present embodiment, energization to the atomization device 30 is not always performed, and for example, is performed for a fixed time after the defrosting of the evaporator 14 is performed. By defrosting the evaporator 14, drain water is accumulated in the evaporation pan 20 via the drain pipe 60. Therefore, by energizing the atomizing device 30 for a certain period of time after the defrosting of the evaporator 14, the power consumption period of the atomizing device 30 can be suppressed by minimizing the energizing period. In addition, it is conceivable that drain water is reliably accumulated in the evaporation dish 20 by energizing the atomization device 30 for a certain period of time after defrosting of the evaporator 14 as described above. Failure of the atomization device 30 can also be prevented.

  It is considered that there is a certain correlation between the amount of drain water in the evaporating dish 20 and the defrosting time of the evaporator 14. That is, the longer the defrosting time of the evaporator 14 is, the more the amount of drain water in the evaporation pan 20 increases. Therefore, when the defrosting time of the evaporator 14 exceeds a predetermined time, the energization to the atomizing device 30 may be performed for a predetermined time. When the defrosting time of the evaporator 14 exceeds the predetermined time, it is considered that the drain water amount also reaches the predetermined water amount, and in such a case, the atomization device 30 is energized for a predetermined time. Thus, the drain water in the evaporating dish 20 can be reliably atomized. Moreover, the electricity consumption period of the atomization device 30 can be minimized by minimizing the power consumption period of the atomization device 30. Furthermore, in such a case, it is considered that the amount of drain water also reaches a predetermined amount of water, so that the failure of the atomization device 30 as described above can be prevented.

  With regard to the amount of drain water in the evaporating dish 20, for example, a seesaw type sensor may be provided on the evaporating dish 20 and detected by this sensor. In this case, when it is determined by the sensor that the amount of drain water in the evaporating dish 20 has reached a predetermined amount, the atomization device 30 may be energized.

  In the present embodiment, the atomizing device 30 has been described as an aspect using an ultrasonic element. However, the present invention is not limited to such an embodiment, and for example, a generally known device such as a centrifugal micronizer with a rotating disk or an electrostatic atomizer may be used as the atomizer 30. It is also good.

Second Embodiment
FIG. 8 is a cross-sectional view showing the refrigerator 1 according to the second embodiment of the present invention, and is a cross-sectional view taken along the line EE 'shown in FIG. FIG. 9 is a schematic view showing a machine room of the refrigerator 1 shown in FIG. The outline of the refrigerator 1 according to the second embodiment of the present invention will be described with reference to FIGS. 8 and 9.

  As shown in FIG. 8, in the refrigerator 1 according to the second embodiment, the evaporation dish 20 does not protrude further in the Y direction than the back surface 2 a-1 of the refrigerator 1 in a side view of the refrigerator 1. In the present embodiment, on the back surface 2a-1 of the upper part of the refrigerator 1, a protrusion 80 as space securing means is provided. The protrusion 80 may have a shape extending the full width in the X direction of the back surface 2a-1 in the refrigerator 1, or the protrusion 80 having a short length may be the end of the width in the X direction of the back surface 2a-1. May be provided respectively.

  In the present embodiment, when the refrigerator 1 is installed in the vicinity of the wall surface 70 in the room, the projecting portion 80 functions as a space securing means, and a space of W between the back surface 2a-1 of the refrigerator 1 and the wall surface 70. S is secured.

  Further, in the present embodiment, as shown in FIGS. 8 and 9, a notch is formed in a part of the back surface 2a-1 of the refrigerator 1 corresponding to the position of the evaporation plate 20 in the width direction of the refrigerator 1 in the X direction. Provided to form the flow path 65.

  Since the flow path 65 is formed, the drain water atomized by the atomization device 30 and turned into mist is a space S between the back surface 2a-1 of the refrigerator 1 and the wall surface 70 through the flow path 65. Led to That is, as shown in FIG. 5, the mist released in the direction of arrow B by the atomization device 30 changes the direction in the direction of arrow C by the flow path 65, and thereafter, along the back surface 2a-1, It is emitted in the direction of arrow D. As described above, also in the present embodiment, the rising air flow due to the mist rises on the back surface 2a-1 of the refrigerator 1, and the transpiration performance for drain water stored in the evaporation dish 20 can be improved. Drain water can be reliably vaporized.

  Also in the present embodiment, the drain water in the evaporating dish 20 is surely evaporated by the atomizing device 30 while using the high-efficiency compressor 50 for energy saving, and the drain water overflows from the evaporating dish 20 You can prevent that.

  The method for energizing the atomizing device 30 described in the first embodiment, the method for detecting drain water in the evaporation pan 20, and the like will not be redundantly described, but can naturally be applied to the second embodiment as well. is there.

  Although the embodiments and modes of the present invention have been described, the disclosed contents may be varied in the details of construction, and the combinations and changes of the elements and the like in the modes and embodiments may be claimed. It can be realized without departing from the scope and spirit of the invention.

DESCRIPTION OF SYMBOLS 1 Refrigerator 2a-1 back 12 machine room 20 evaporation tray 30 atomization apparatus 50 compressor 80 protrusion part S Space

Claims (6)

A compressor provided in the machine room,
And an evaporation pan disposed above the compressor.
An atomization device provided in the evaporation dish for atomizing drain water by energization;
Space securing means for forming a space in which the drain water atomized by the atomization device rises along the back side of the refrigerator;
A refrigerator characterized by The space securing means is the evaporation dish which is installed to protrude rearward than the back surface of the refrigerator in a side view of the refrigerator.
The refrigerator according to claim 1, characterized in that. The atomizing device is provided at the rearwardly projecting portion of the evaporating dish.
The refrigerator according to claim 1 or 2, characterized in that. The rear surface of the refrigerator is formed obliquely such that a portion close to the rear surface side end of the evaporating dish faces the end.
The refrigerator according to claim 1, characterized in that. The electricity supply to the atomization device is performed for a predetermined time after defrosting.
The refrigerator according to any one of claims 1 to 4, characterized in that. The atomizing device is covered by a cover member so as not to contact the outer surface of the refrigerator.
The refrigerator according to any one of claims 1 to 5, characterized in that.