JP2014059070A - Condensation apparatus and freezing refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve condensation performance.SOLUTION: A condensation apparatus 20 includes a condenser 41. The condenser 41 includes multiple condensation fins 50 which are disposed so as be spaced away from each other in a vertical direction and face each other in the vertical direction. Drain water is supplied from a drain water supply part 31 to the condensation fins 50.

Description

  The present invention relates to a condensing device and a refrigerator-freezer, and more particularly, to a condensing device that radiates condensation fins using drain water, and a refrigerator-freezer including such a condensing device.

  Japanese Patent Application Laid-Open No. 07-167548 (Patent Document 1) discloses an invention relating to a refrigerator-freezer. This refrigerator-freezer includes a condenser and a drain water pipe for dropping the drain water of the evaporator onto the condenser. The publication states that the heat dissipation performance of the condenser can be improved by removing the latent heat from the condenser when the drain water evaporates.

  Japanese Patent Application Laid-Open No. 07-174454 (Patent Document 2) also discloses an invention related to a refrigerator-freezer. This refrigerator-freezer includes a condenser and a drain pipe having a drain water discharge port above the cooling air suction side of the condenser. The publication states that dust can be prevented from adhering to the condenser without using a filter.

  Japanese Unexamined Patent Publication No. 2000-304484 (Patent Document 3) also discloses an invention related to a refrigerator-freezer. The heat exchanger used in the refrigerator / freezer includes a plurality of fins, and a plurality of cantilevered cut-and-raised pieces are provided on both sides of each fin, and the bending angles of the cut-and-raised sides are sequentially different. The publication states that the heat exchange performance can be improved because the leading edge effect is obtained with respect to the air flow at the cut and raised side.

  Japanese Patent Laying-Open No. 2005-221228 (Patent Document 4) also discloses an invention related to a refrigerator-freezer. This refrigerator-freezer includes a glass tube heater for defrosting the evaporator and a plurality of fins provided in the evaporator, and the glass tube heater and the end portions of the fins are in contact with each other. The publication states that defrosting efficiency can be improved because defrosting effect by heat conduction is added in addition to defrosting using radiant heat.

  Japanese Patent Laying-Open No. 2008-014571 (Patent Document 5) also discloses an invention related to a refrigerator-freezer. The heat exchanger used for this refrigerator / freezer includes a fin material and a cylindrical collar portion provided on the fin material. A synthetic resin layer is formed on the surface of the cross fin tube including the outer surface of the joint portion between the collar portion and the refrigerant pipe, and a hydrophilic resin layer is formed on the surface of the synthetic resin layer. The gazette states that gas or the like generated from food can be prevented from entering the joint between the refrigerant pipe and the fin material, and corrosion resistance can be improved.

  Japanese Patent Laid-Open No. Sho 63-318496 (Patent Document 6) discloses an invention relating to a surface treatment method for a heat exchanger. In this surface treatment method, hydrophilicity and corrosion resistance are imparted to the heat exchanger by a single surface treatment step. The publication states that according to this surface treatment method, hydrophilicity and anticorrosion can be imparted to the heat exchanger at a cost that is almost the same as that of the prior art.

Japanese Patent Laid-Open No. 07-167548 Japanese Patent Laid-Open No. 07-174454 JP 2000-304484 A JP 2005-221228 A JP 2008-014571 A JP-A-63-318496

  An object of this invention is to provide the condensing apparatus which can exhibit high condensation performance compared with the past, and a refrigerator-freezer provided with such a condensing apparatus.

  A condensing device according to the present invention includes a plurality of condensing fins that are spaced apart from each other in the vertical direction and are arranged so as to face each other in the vertical direction, and drain water is supplied from the drain water supply unit to the condensing fins. A condenser is provided, and the condensation fin comes into contact with the condensation fin while being cooled by the drain water supplied to the surface of the condensation fin from the drain water supply unit and the airflow flowing around the condensation fin. Heat exchange with the refrigerant flowing in the refrigerant pipe disposed in the.

  Preferably, it further includes an end plate disposed so as to face the condensing fin located at the uppermost position from above, and the end plate is supplied from the drain water supply unit onto the upper surface of the end plate. A water introduction hole for conducting water downward is provided.

  Preferably, the water guide hole is located above a central portion of the condensation fin located at the top.

  Preferably, the drain water supply unit has an outflow part through which the drain water flows out, and the condensing fin located at the uppermost part of the condensing fin located at the uppermost part is the outflow part. It arrange | positions so that it may be located under a part.

  Preferably, the drain water supply unit has an outflow part through which the drain water flows out, and the condensation fin located at the uppermost part is upstream in the direction in which the airflow flows among the condensation fins located at the uppermost part. It arrange | positions so that the part of the side may be located under the said outflow part.

  Preferably, the apparatus further comprises a drain pan disposed below the condensing fin located at the lowermost portion, and the drain water supplied to the surface of the condensing fin contains the dust adhering to the surface of the condensing fin in the drain pan. Fall towards

  Preferably, the outer peripheral edge of the condensing fin includes an anti-upper portion having a shape that warps upward as it goes to the outside of the condensing fin.

  Preferably, the anti-upper part is formed by removing a mold from the lower surface side to the upper surface side of the condensation fin along the outer peripheral edge of the condensation fin when the condensation fin is manufactured.

  Preferably, the outer peripheral edge of the condensing fin includes an anti-lower portion having a shape that warps downward as it goes outward of the condensing fin.

  Preferably, the plurality of condensing fins are arranged so as to be inclined, and are inclined downward as they go from the upstream side to the downstream side in the direction in which the airflow flows.

  Preferably, a part of the upper surface of the condensation fin is provided with a recess having a shape that is recessed downward.

  Preferably, the drain water supply unit is disposed above the condensing fin located at the uppermost portion, has a half-divided cylindrical shape, and is disposed so as to be inclined downward from above.

  Preferably, the drain water supply unit includes a storage unit capable of temporarily storing the drain water before supplying the drain water to the surface of the condensation fin.

  Preferably, the drain water supply unit has a spray unit that atomizes the drain water and sprays it on the surface of the condensation fins.

  The refrigerator-freezer based on this invention is equipped with said condensation apparatus based on this invention.

  ADVANTAGE OF THE INVENTION According to this invention, the refrigerator which can exhibit high condensation performance compared with the past, and a refrigerator refrigerator provided with such a condenser can be obtained.

3 is a cross-sectional view illustrating the refrigerator-freezer in Embodiment 1. FIG. It is a perspective view which shows the condensing apparatus used for the refrigerator-freezer of Embodiment 1. FIG. It is a perspective view which shows the state which the condensing apparatus used for the refrigerator-freezer of Embodiment 1 decomposed | disassembled. It is a perspective view which shows the condensation fin of the condensation apparatus used for the refrigerator-freezer of Embodiment 1. FIG. It is a perspective view which shows a mode that drain water is supplied to the condensing apparatus used for the refrigerator-freezer of Embodiment 1. FIG. It is a side view which shows a mode that drain water is supplied to the condensing apparatus used for the refrigerator-freezer of Embodiment 1. FIG. It is another perspective view which shows the condensing apparatus used for the refrigerator-freezer of Embodiment 1. FIG. It is a perspective view which shows the condensing apparatus used for the refrigerator-freezer of Embodiment 1, and another structure. FIG. 6 is a perspective view showing a condensing device in a first modification of the first embodiment. FIG. 10 is a perspective view showing a condensing device and another configuration in the first modification of the first embodiment. FIG. 10 is a first perspective view showing a condensing device in a second modification of the first embodiment. FIG. 10 is a second perspective view showing a condensing device in a second modification of the first embodiment. FIG. 10 is a perspective view showing a condensing device in a third modification of the first embodiment. It is a side view which shows the condensing apparatus and other structure in the 3rd modification of Embodiment 1. FIG. 10 is a side view showing a condensing device in a fourth modification of the first embodiment. FIG. 10 is a perspective view showing a condensing device in a fifth modification of the first embodiment. FIG. 10 is a side view showing a condensing device in a fifth modification of the first embodiment. FIG. 10 is a perspective view showing a condensing device in a sixth modification of the first embodiment. FIG. 10 is a perspective view showing a condensing device according to a seventh modification of the first embodiment. It is a perspective view which shows the other condensation apparatus regarding the 7th modification of Embodiment 1. FIG. It is a side view which shows the condensing apparatus in the 8th modification of Embodiment 1. It is a side view which shows the condensing apparatus in the 9th modification of Embodiment 1. It is a perspective view which shows the condensing apparatus in the 10th modification of Embodiment 1. FIG. It is a perspective view which shows the condensing apparatus in the 11th modification of Embodiment 1. 6 is a perspective view illustrating a condensing device in Embodiment 2. FIG. It is arrow sectional drawing along the XXVI-XXVI line | wire in FIG. FIG. 12 is a perspective view showing a condensing device in a first modification of the second embodiment. It is arrow sectional drawing along the XXVIII-XXVIII line | wire in FIG. FIG. 10 is a cross-sectional view showing a condensation fin used in a condenser device in a second modification of the second embodiment. FIG. 12 is a perspective view showing a condensing device in a third modification of the second embodiment. It is arrow sectional drawing along the XXXI-XXXI line | wire in FIG. FIG. 12 is a perspective view showing a condensing device in a fourth modification of the second embodiment. It is arrow sectional drawing along the XXXIII-XXXIII line | wire in FIG. 10 is a perspective view showing a condensing device in Embodiment 3. FIG. FIG. 12 is a cross-sectional view showing a condensing device in a first modification of the third embodiment. FIG. 10 is a cross-sectional view showing a condensation fin used in a condenser device in a second modification of the third embodiment. FIG. 10 is a cross-sectional view showing a condensation fin used in a condenser device in a third modification of the third embodiment. FIG. 6 is a perspective view showing a condensing device in a fourth embodiment. It is a perspective view which shows the condensation fin used for the condensation apparatus in the 1st modification of Embodiment 4. FIG. 10 is a perspective view showing a condensing device in a second modification of the fourth embodiment. It is a perspective view which shows the condensation fin used for the condensation apparatus in the 3rd modification of Embodiment 4. FIG. It is a top view which shows the condensation fin used for the condensation apparatus in the 4th modification of Embodiment 4. FIG. 10 is a plan view showing a condensation fin used in a condensation apparatus in a fifth embodiment. FIG. 10 is a plan view showing a condensation fin used in a condensation apparatus in a first modification of the fifth embodiment. FIG. 25 is a perspective view showing a condensing device in a second modification example of the fifth embodiment. FIG. 29 is a plan view showing a condensation fin used in a condensation apparatus in a second modification of the fifth embodiment. It is a perspective view which shows the condensation fin used for the condensation apparatus in the 2nd modification of Embodiment 5. FIG. FIG. 25 is another plan view showing the condensation fins used in the condensation apparatus in the second modification of the fifth embodiment. FIG. 25 is a plan view showing a condensation fin used in a condensation apparatus in a third modification of the fifth embodiment. FIG. 25 is a side view showing a condensing device in a fourth modification example of the fifth embodiment. It is a side view which shows the condensation fin used for the condensation apparatus in the 4th modification of Embodiment 5. FIG. 25 is another side view showing the condensing device in the fourth modified example of the fifth embodiment. It is a perspective view which shows the condensing apparatus in Embodiment 6. FIG. It is a perspective view which shows the end plate used for the condensing apparatus in Embodiment 6. FIG. 29 is a perspective view showing an end plate used for a condensing device in a first modification of the sixth embodiment. It is arrow sectional drawing along the LVI-LVI line in FIG. It is arrow sectional drawing along the LVII-LVII line in FIG. FIG. 10 is a perspective view showing a condensing device in a seventh embodiment. FIG. 59 is an enlarged perspective view showing a region surrounded by a LIX line in FIG. 58. FIG. 16 is a diagram illustrating experimental results regarding Experimental Example 1 of the seventh embodiment. It is a figure which shows the experimental result regarding the experiment example 2 of Embodiment 7. FIG. FIG. 16 is a diagram illustrating experimental results regarding Experimental Example 3 of the seventh embodiment.

  Embodiments and experimental examples based on the present invention will be described below with reference to the drawings. In the description of each embodiment and each experimental example, when the number and amount are referred to, the scope of the present invention is not necessarily limited to the number and amount unless otherwise specified. In the description of each embodiment and each experimental example, the same parts and corresponding parts are denoted by the same reference numerals, and redundant description may not be repeated. Unless there is a restriction | limiting in particular, it is planned from the beginning to use suitably combining the structure shown in each embodiment, and the structure shown in each experiment example.

[Embodiment 1]
(Refrigerator 100)
FIG. 1 is a cross-sectional view showing a refrigerator-freezer 100 according to the present embodiment. In FIG. 1, the arrow Z direction indicates the vertical direction. The direction opposite to the direction in which the arrow Z direction in FIG. 1 extends is the direction of gravity. The arrow X direction is a direction orthogonal to the arrow Z direction. In the present embodiment, the arrow X direction corresponds to the depth direction of the refrigerator-freezer 100. The arrow Y direction described in FIG. 2 etc. is a direction orthogonal to both the arrow X direction and the arrow Z direction. In the present embodiment, the arrow Y direction corresponds to the width direction of the refrigerator-freezer 100.

  The relationship between the directions of arrows X, Y, and Z is common in FIGS. 2 to 59, etc., the arrangement directions of the condenser (condenser 20) and the condensation fins (condensation fins 50) are shown along the arrow X direction and the arrow Y direction. The arrangement direction in the arrow Y direction is not limited to the illustrated configuration. In other words, the condensing device, the condensing fins, and the like may not be arranged along the depth direction (arrow X direction) and the width direction (arrow Y direction) of the refrigerator-freezer.

  As shown in FIG. 1, the refrigerator / freezer 100 includes a housing 10, a freezer compartment 11, a freezer compartment door 11 </ b> D, a refrigerator compartment 12, a refrigerator compartment door 12 </ b> D, a cooling air passage 13, an evaporator 14, a defroster 15, a drain. A water pipe 16, a machine room 17, an intake port 18, an exhaust port 19, a condensing device 20, a drain water supply unit 30, a blower fan 90, a compressor 92, and a refrigerant pipe (not shown) (see the refrigerant pipe 60 in FIG. 2). . The refrigerant pipe is disposed along the evaporator 14, the condensing device 20, and the compressor 92, and the refrigerant flowing in the refrigerant pipe sequentially passes through them. In the refrigerator 100, the cooling cycle operation is performed by the refrigerant flowing in the refrigerant pipe.

  The freezer compartment 11 and the refrigerating compartment 12 are respectively formed inside the housing 10 and located on opposite sides of the cooling air passage 13. The freezer compartment 11 and the refrigerator compartment 12 communicate with the cooling air passage 13, respectively. The freezer compartment door 11 </ b> D is for opening and closing the freezer compartment 11, and the freezer compartment door 12 </ b> D is for opening and closing the freezer compartment 12. Although the refrigerator-freezer 100 of this Embodiment is provided with both the freezing function by the freezer compartment 11 and the refrigerating function by the refrigerator compartment 12, as a function of a refrigerator-freezer, you may provide only any one of these.

  The evaporator 14 is disposed in the cooling air passage 13 and is located on the back side of the freezer compartment 11. The defroster 15 has a heater (not shown) etc., for example, and is arrange | positioned under the evaporator 14. FIG. The machine room 17 is provided in the lower part of the housing 10. The condenser device 20, the drain water supply unit 30, the blower fan 90, and the compressor 92 are disposed in the machine room 17. The air inlet 18 is located upstream in the direction in which the airflow generated by the blower fan 90 flows. Airflow (cooling air) is introduced into the machine chamber 17 through the air inlet 18. The exhaust port 19 is located downstream in the direction in which the airflow generated by the blower fan 90 flows. Air is discharged from the machine room 17 through the exhaust port 19.

  The drain water pipe 16 includes a water collection port 16M and a drain port 16N. The water collection port 16M is disposed below the evaporator 14. The drain port 16N is disposed above the condensing device 20. The drain water pipe 16 has a hollow shape and extends from the water collection port 16M to the drain port 16N. A drain water supply unit 30 is provided at the drain port 16N. The drain port 16N and the drain water supply unit 30 may be configured integrally with each other, or may be joined to each other after being manufactured separately.

  In the refrigerator-freezer 100 configured as described above, the refrigerant flows in the refrigerant pipe (see the refrigerant pipe 60 in FIG. 2) by the operation of the compressor 92, and the cooling cycle operation is performed. The refrigerant absorbs heat when passing through the evaporator 14 and dissipates heat when passing through the condensing device 20. The air cooled when passing through the evaporator 14 flows into the freezer compartment 11 and the refrigerator compartment 12 through the cooling air passage 13. The freezer compartment 11 and the refrigerator compartment 12 are each cooled. At this time, frost is gradually formed on the surface of the evaporator 14.

  When the cooling cycle operation of the refrigerator 100 is performed for a long time, the cooling air passage 13 becomes narrow due to the frost formed on the surface of the evaporator 14. In the refrigerator 100, the cooling cycle operation is stopped at a predetermined timing. The frost formed on the surface of the evaporator 14 is melted by heating the defroster 15. The melted frost flows into the drain water pipe 16 from the water collection port 16M as drain water. The drain water is supplied from the drain water supply unit 30 to the condensing device 20 through the drain port 16N (details will be described later).

  The blower fan 90 generates an airflow (cooling air) that flows from the intake port 18 toward the exhaust port 19. The airflow flowing around the condensing device 20 cools the condensing device 20. On the other hand, drain water is also supplied to the condensing device 20, and the surface of the condensing device 20 is wet. In the refrigerator / freezer 100, the condenser 20 is not only cooled by heat exchange between the cooling air and the condenser 20, but also when the latent heat is taken away from the condenser 20 when the drain water evaporates. To be cooled.

  Accordingly, the condensing device 20 used in the refrigerator / freezer 100 can be cooled not only by the airflow flowing around the condensing device 20 but also by the drain water supplied from the drain water supply unit 30 to the condensing device 20. It has a high heat dissipation performance and can exhibit a higher condensation performance than the conventional one.

(Condenser 20)
With reference to FIGS. 2-4, the condensing apparatus 20 used for the refrigerator-freezer 100 of this Embodiment is demonstrated in detail. FIG. 2 is a perspective view showing the condensing device 20. FIG. 3 is a perspective view showing the disassembled state of the condensing device 20. FIG. 4 is a perspective view showing the condensing fins 50 used in the condensing device 20. As shown in FIGS. 2 and 3, the condensing device 20 includes four condensers 41 to 44 and a drain pan 94 (see FIG. 2).

  The condensers 41 to 44 include a plurality of condensation fins 50. The condensers 41 to 44 are arranged in four rows along the arrow Y direction. The drain pan 94 is disposed below the condensers 41 to 44 in the vertical direction. The drain pan 94 may be used as necessary. A drain water supply unit 30 for supplying drain water from the evaporator 14 (see FIG. 1) to the condensing device 20 includes four drain water supply units 31 to 34. Each of the drain water supply units 31 to 34 has a tubular shape, and outlets 31T to 34T through which the drain water flows out are provided at the respective lower ends.

  In the present embodiment, a plurality of condensation fins 50 included in the condenser 41, a plurality of condensation fins 50 included in the condenser 42, a plurality of condensation fins 50 included in the condenser 43, and a condenser 44 are included. Each of the plurality of condensed fins 50 has the same shape. Each of the plurality of condensing fins 50 is provided with insertion holes 57 and 58 (see FIG. 3). The refrigerant pipe 60 is inserted into the insertion holes 57 and 58. By inserting the refrigerant pipe 60 into the insertion holes 57 and 58, the plurality of condensation fins 50 are fixed to the refrigerant pipe 60.

  The refrigerant pipe 60 has a function as a heat transfer pipe through which a refrigerant (not shown) flows. The refrigerant pipe 60 includes a plurality of straight pipe portions 61, a plurality of upper curved pipe portions 62, and a plurality of lower curved pipe portions 63. The plurality of straight pipe portions 61 have a linear shape and are provided so as to be parallel to each other. The plurality of straight pipe portions 61 in the present embodiment are substantially parallel to the direction in which the airflow (cooling air) from the blower fan 90 (see FIG. 2) flows (substantially parallel to the arrow Z direction). Arranged).

  The upper curved pipe part 62 has a U-shape and is provided so as to connect the upper ends of the adjacent straight pipe parts 61. The lower curved pipe part 63 also has a U-shape and is provided so as to connect the lower ends of the adjacent straight pipe parts 61. The straight pipe part 61 is connected by the upper curved pipe part 62 and the lower curved pipe part 63, whereby the refrigerant pipe 60 is configured as a single heat transfer pipe. The refrigerant tube 60 may be composed of two or more heat transfer tubes.

  The plurality of condensing fins 50 included in the condenser 41 are fixed and integrated with two straight pipe portions 61 arranged in parallel (see FIG. 2), and spaced apart from each other in the vertical direction (arrow Z direction). They are arranged so as to face each other in the vertical direction. The plurality of condensing fins 50 included in the condenser 41 are arranged horizontally such that each condensing fin 50 is substantially along the horizontal direction, and from above to below along the vertical direction (or They are arranged in order (from bottom to top).

  The plurality of condensing fins 50 included in the condenser 41 are parallel to each other with respect to the condensing fins 50 adjacent in the vertical direction (arrow Z direction). The plurality of condensing fins 50 included in the condenser 41 are arranged at intervals (intervals) of about 2 mm to about 3 mm in the vertical direction. Cooling air from the blower fan 90 (see FIG. 2) flows between the condensing fins 50 adjacent in the vertical direction using this interval.

  The arrangement relationship of the plurality of condensation fins 50 is also the same in the condensers 42 to 44. The plurality of condensing fins 50 included in the condenser 42 are also fixed and integrated with two straight pipe portions 61 arranged in parallel, arranged so as to be spaced apart from each other in the vertical direction and opposed to each other in the vertical direction. Yes. The plurality of condensing fins 50 included in the condenser 43 are also fixed and integrated with two straight pipe portions 61 arranged in parallel, arranged so as to be spaced apart from each other in the vertical direction and opposed in the vertical direction. Yes. The plurality of condensing fins 50 included in the condenser 44 are also fixed and integrated with two straight pipe portions 61 arranged in parallel, arranged so as to be spaced apart from each other in the vertical direction and opposed to each other in the vertical direction. Yes.

  In order to fix the plurality of condensing fins 50 to the refrigerant pipe 60, a so-called mechanical expansion method may be used. In this case, the plurality of condensing fins 50 are provided with insertion holes 57 and 58 having a diameter slightly larger than the outer diameter of the straight pipe portion 61 of the refrigerant pipe 60. After the straight pipe portion 61 of the refrigerant pipe 60 is inserted into the insertion holes 57 and 58, a tapered jig having an outer diameter larger than the inner diameter of the straight pipe portion 61 is inserted into the straight pipe portion 61. . The condensing fins 50 are fixed to the straight pipe portion 61 of the refrigerant pipe 60 by enlarging the pipe diameter of the straight pipe portion 61 of the refrigerant pipe 60 using a jig.

  Instead of using a jig, the inside of the straight pipe portion 61 may be pressurized to enlarge the pipe diameter of the straight pipe portion 61, or the straight pipe portion 61 may be compressed in the tube axis direction to The diameter may be increased. After the plurality of condensing fins 50 are fixed to the straight pipe portion 61, the upper ends of the adjacent straight pipe portions 61 are connected to each other by an upper curved pipe portion 62 prepared separately from the straight pipe portion 61. The lower ends of the parts 61 are connected by a downward curved pipe part 63 prepared separately from the straight pipe part 61.

  In order to fix the plurality of condensing fins 50 to the refrigerant pipe 60, a so-called non-expanding method may be used. In this case, the plurality of condensing fins 50 are provided with insertion holes 57 and 58 having substantially the same diameter as the outer diameter of the straight pipe portion 61 of the refrigerant pipe 60. The plurality of condensing fins 50 are fixed to the straight pipe portion 61 by press-fitting the straight pipe portion 61 of the refrigerant pipe 60 into the insertion holes 57 and 58. After the plurality of condensing fins 50 are fixed to the straight pipe portion 61, the upper ends of the adjacent straight pipe portions 61 are connected to each other by an upper curved pipe portion 62 prepared separately from the straight pipe portion 61. The lower ends of the parts 61 are connected by a downward curved pipe part 63 prepared separately from the straight pipe part 61.

  When fixing the plurality of condensing fins 50 to the refrigerant pipe 60, a single refrigerant pipe 60 prepared in advance may be used. While inserting one refrigerant pipe 60 into the insertion holes 57 and 58 of the plurality of condensing fins 50 in order, the refrigerant pipe 60 is bent and deformed at portions corresponding to the upper curved pipe part 62 and the lower curved pipe part 63. Also by this method, it is possible to fix the plurality of condensation fins 50 to the refrigerant pipe 60.

  The refrigerant pipe 60 shown in FIG. 3 is in a state (completed state) after the upper curved pipe part 62 is connected to the upper end of the straight pipe part 61 and the lower curved pipe part 63 is connected to the lower end of the straight pipe part 61. Have. The refrigerant pipe 60 shown in FIG. 3 is shown apart from the plurality of condensing fins 50. Actually, the plurality of condensing fins 50 are fixed to the refrigerant pipe 60 by using the fixing method as described above. For convenience of explanation, the refrigerant pipe 60 shown in FIG. 3 represents the state (completed state) of the refrigerant pipe 60 after the plurality of condensing fins 50 are fixed, virtually separated from the plural condensing fins 50. It is what.

  With respect to the condensers 41 to 44 configured as described above, the drain pan 94 (see FIG. 2) of the present embodiment is below the condenser fins 50 located at the lowermost parts of the condensers 41 to 44. Be placed. The condensation fin 50 located at the uppermost part of the condenser 41 is disposed below the outlet 31 </ b> T of the drain water supply unit 31. The condensation fin 50 located at the uppermost part of the condenser 42 is disposed below the outlet 32 </ b> T of the drain water supply unit 32. The condensation fin 50 located at the uppermost part of the condenser 43 is disposed below the outlet 33T of the drain water supply unit 33. The condensation fin 50 located at the top of the condenser 44 is disposed below the outlet 34T of the drain water supply unit 34.

  Referring to FIG. 4, condensing fin 50 of the present embodiment includes upper surface 51, lower surface 52, four outer peripheral edges 53 to 56, and two insertion holes 57 and 58, and has a flat plate shape as a whole. . The surface of the condensation fin 50 includes an upper surface 51, a lower surface 52, four outer peripheral edges 53 to 56, and inner peripheral surfaces of the two insertion holes 57 and 58. The four outer peripheral edges 53 to 56 are arranged in a rectangular shape as a whole. The outer peripheral edge 53 and the outer peripheral edge 55 form the long side of the condensation fin 50, respectively, and the outer peripheral edge 54 and the outer peripheral edge 56 form the short side of the condensation fin 50, respectively. The upper surface 51 and the lower surface 52 are parallel to each other. Each of the insertion holes 57 and 58 has a circular shape.

  The dimension L1 of the condensation fin 50 in the longitudinal direction (arrow X direction) is, for example, 50 mm. The dimension L2 of the condensing fin 50 in the short direction (arrow Y direction) is, for example, 28 mm. The dimension L3 in the thickness direction (arrow Z direction) of the condensation fin 50 is, for example, 0.15 mm.

(Function and effect)
FIG. 5 is a perspective view showing a state in which drain water is supplied to the condensing device 20. FIG. 6 is a side view showing a state in which drain water is supplied to the condensing device 20. As described above, the plurality of condensing fins 50 included in the condenser 41 are spaced apart from each other in the vertical direction (arrow Z direction) and the condensing fins 50 of the condensing fins 50 and the lower surface 52 of the condensing fins 50 adjacent to each other in the vertical direction. Is arranged so as to face the upper surface 51 in the vertical direction.

  The condensation fin 50 located at the uppermost part of the condenser 41 is disposed below the outlet 31 </ b> T of the drain water supply unit 31. The drain water W dropped from the outlet 31T comes into contact with the upper surface 51 (see FIG. 6) of the condensation fin 50 located at the uppermost part of the condenser 41. The drain water W forms water droplets on the upper surface 51 or spreads wet on the upper surface 51.

  Thereafter, the drain water W receives airflow from the blower fan 90 (see FIG. 2), is integrated with the drain water W supplied thereafter, or is pushed by the drain water W supplied thereafter. The drain water W moves toward the outer peripheral edge of the condensation fin 50. The drain water W that has reached the outer peripheral edge of the condensation fin 50 protrudes from the upper surface 51 of the condensation fin 50 and hangs downward. The drain water W hangs down (moves downward) toward the outer peripheral edge of the condensing fin 50 arranged one level below.

  The drain water W that has moved downward and contacted the condensing fins 50 receives the airflow from the blower fan 90 (see FIG. 2), is integrated with other drain water W that moves downward thereafter, or moves downward thereafter. It is pushed by other drain water W. The drain water W moves toward the central portion of the condensation fin 50 or hangs down toward the outer peripheral edge of the condensation fin 50 arranged one level lower.

  The drain water W that moves from the outer peripheral edge of the condensing fin 50 toward the center part includes one that moves while contacting the upper surface 51 of the condensing fin 50 and one that moves while contacting the lower surface 52 of the condensing fin 50. included. A part of the drain water W evaporates when moving along the upper surface 51 and / or the lower surface 52 and takes away latent heat from the condensation fins 50. The drained water W that has not evaporated reaches the condensing fin 50 located at the lowermost part, and then falls into the drain pan 94 (see FIG. 5).

  The drain water W dropped from the outlet 31 </ b> T exchanges heat with the condensing fin 50 or evaporates on the condensing fin 50 while repeating such movement and dropping (downward movement). In the condensing device 20, the plurality of condensing fins 50 are arranged so as to be spaced apart from each other in the vertical direction (arrow Z direction), and the condensing fins 50 adjacent in the vertical direction are opposed to each other in the vertical direction. Each of the 50 sheets can hold the drain water W for a predetermined time.

  Accordingly, the drain water W dripped from the outlet 31T effectively cools each condensing fin 50 by repeating the above movement and dropping (moving downward) relatively slowly. Can do. Such an operation is similarly performed in the condensers 42 to 44 (see FIG. 5).

  The plurality of condensed fins 50 are not only cooled by the airflow flowing around the plurality of condensed fins 50 but also sufficiently drained by the drain water supplied from the drain water supply unit 30 to the plurality of condensed fins 50. Can be refrigerated. Therefore, the condensing device 20 of the present embodiment has a high heat dissipation performance, and can exhibit a higher condensing performance than the conventional one. According to the present embodiment, for example, the condensing device 20 alone is expected to increase the condensing performance by about 12% to 18%, and the entire refrigerator-freezer 100 has an increase in energy use efficiency of about 5% to 8%. Expected.

  Unlike the condensing device 20, a plurality of condensing fins are arranged in a horizontal direction (in the directions of arrows X and Y) so that the surfaces of condensing fins adjacent in the horizontal direction face each other in the horizontal direction. There is also. In this case, the drain water dripped toward the condensation fins is difficult to be held on the surface of the condensation fins. Drain water tends to fall as it passes between adjacent condensation fins. Even when drain water is held on the surface of the condensing fin, the drain water is easily separated from the condensing fin in a short time due to the action of gravity.

  On the other hand, in the condensing device 20, each of the condensing fins 50 can sufficiently hold the drain water W. The condensing device 20 has a high heat dissipation performance, and can exhibit a higher condensing performance than the conventional one. The surface of the condensation fin 50 may be subjected to a hydrophilic coating treatment so that the condensation fin 50 can hold the drain water W more appropriately. By improving the hydrophilicity of the surface of the condensation fin 50, the drain water W can more easily cool the surface of the condensation fin 50.

  The surface of the condensation fin 50 may be subjected to an electrolytic corrosion prevention coating process. By protecting the surface of the condensation fin 50, it is possible to prevent the condensation performance of the condensation fin 50 from deteriorating.

  According to the refrigerator-freezer 100, since the condensing device 20 has high condensing performance, downsizing the condensing device 20 can also contribute to space saving. For example, the volume of the machine room 17 (see FIG. 1) can be reduced, and the volumes of the freezer room 11 and the refrigerator room 12 can be increased. In recent years, although the external dimensions of the refrigerator-freezer are almost unchanged, the volumes of the freezer compartment and the refrigerator compartment tend to increase. According to the refrigerator 100, it is possible to sufficiently meet such requirements.

  According to the refrigerator-freezer 100, since the condensing device 20 has high heat dissipation performance, the air volume of the blower fan 90 can be reduced. By reducing the driving sound of the blower fan 90, the user's discomfort can be reduced. In the refrigerator-freezer 100, since the condensing device 20 has high heat dissipation performance, it is possible to obtain a high cooling effect with less energy consumption, and to contribute to energy saving.

  With reference to FIGS. 7 and 8, when cooling the plurality of condensation fins 50 using the airflow from the blower fan 90 (see arrow AR <b> 90), the dust 200 tends to adhere to the surface of the condensation fins 50. When a large amount of dust 200 adheres to the surface of the condensation fin 50, the condensation performance is reduced.

  In the condensing device 20 of the present embodiment, the drain water W supplied to the surface of the condensing fin 50 receives an air flow from the blower fan 90, is integrated with other drain water W that moves downward, or moves downward. It is pushed by other drain water W. The drain water W moves toward the central portion of the condensation fin 50 or hangs down toward the outer peripheral edge of the condensation fin 50 arranged one level lower.

  The drain water W that moves from the outer peripheral edge of the condensing fin 50 toward the center part includes one that moves while contacting the upper surface 51 of the condensing fin 50 and one that moves while contacting the lower surface 52 of the condensing fin 50. included. A part of the drain water W evaporates when moving along the upper surface 51 and / or the lower surface 52 and takes away latent heat from the condensation fins 50.

  The drained water W that has not evaporated reaches the condensing fin 50 located at the lowermost part, and then falls into the drain pan 94 (see FIG. 5). In the condensing device 20 of the present embodiment, the drain water W supplied to the surface of the condensing fin 50 repeats such movement and dropping (downward movement), thereby adhering to the surface of the condensing fin 50. 200 can be dropped into the drain pan 94 (see FIG. 5).

  According to the condensing device 20, the so-called self-cleaning function works to effectively remove the dust 200, and the condensing fin 50 whose surface has been cleaned is more easily cooled by the drain water. Since the dust 200 is effectively removed, the aged deterioration of the condensation fins 50 can be suppressed. In order to prevent the adhesion of the dust 200, it is not necessary to provide a separate filter or the like, and the manufacturing cost can be reduced. Even if a filter is provided, filter replacement work and cleaning work are almost unnecessary, and the frequency of these work can be reduced.

  As shown in FIG. 8, the drain water supply unit 31 of the condensing device 20 may be provided with a driving device 300. The drive device 300 moves the drain water supply unit 31 in the arrow DR2 direction and / or the arrow DR3 direction, so that the drain water W can be supplied to the entire condensation fins 50. It is possible to further improve the condensation performance of the condensation fins 50 and to more effectively remove the dust 200 attached to the condensation fins 50.

(First modification)
With reference to FIGS. 9 and 10, a condensing device 20 </ b> A according to a first modification of the first embodiment will be described. The condensing device 20 </ b> A includes a condenser 45. In the condenser 45, the plurality of condensing fins 50 are arranged so as to be spaced apart from each other in the horizontal direction (arrow X and Y directions), and the surfaces of the condensing fins 50 adjacent in the horizontal direction are opposed to each other in the horizontal direction. Yes. Also in the condenser 45, when the plurality of condensation fins 50 are cooled using the airflow from the blower fan 90 (see arrow AR <b> 90), the dust 200 tends to adhere to the surface of the condensation fins 50. When a large amount of dust 200 adheres to the surface of the condensation fin 50, the condensation performance is reduced.

  In the condensing device 20A, the drain water W dropped toward the plurality of condensing fins 50 receives an air flow from the blower fan 90, is integrated with other drain water W that moves downward, or other that moves downward. It is pushed by the drain water W. The drain water W falls into a drain pan (not shown) together with the dust 200 adhering to the surface of the condensation fin 50. A part of the drain water W evaporates when moving along the surface of the condensation fin 50, and takes away latent heat from the condensation fin 50.

  Also in the condensing device 20A, the so-called self-cleaning function works to effectively remove the dust 200, and the condensing fin 50 whose surface has been cleaned is more easily cooled by the drain water. Since the dust 200 is effectively removed, the aged deterioration of the condensation fins 50 can be suppressed. In order to prevent the adhesion of the dust 200, it is not necessary to provide a separate filter or the like, and the manufacturing cost can be reduced. Even if a filter is provided, filter replacement work and cleaning work are almost unnecessary, and the frequency of these work can be reduced.

  As shown in FIG. 10, the drive device 300 may be provided also in the drain water supply unit 31 of the condensing device 20 </ b> A. The drive device 300 moves the drain water supply unit 31 in the arrow DR2 direction and / or the arrow DR3 direction, so that the drain water W can be supplied to the entire condensation fins 50. It is possible to further improve the condensation performance of the condensation fins 50 and to more effectively remove the dust 200 attached to the condensation fins 50.

(Second modification)
With reference to FIG. 11 and FIG. 12, a condensing device 20B according to a second modification of the first embodiment will be described. In the condenser 41 of the condensing device 20B, a central portion 51C (see FIG. 12) of the upper surface 51 of the condensing fin 50 located at the uppermost position is located below the outlet 31T of the drain water supply unit 31. ing. Also in the condensers 42 to 44, portions near the center of the upper surface of the condensation fin 50 located at the uppermost part are respectively located below the outlets 32 </ b> T to 34 </ b> T of the drain water supply unit 31.

  Referring to FIG. 12, according to the condensing device 20 </ b> B, the drain water W is dropped on a portion 51 </ b> C near the center of the upper surface 51 of the condensing fin 50. On the upper surface 51 of the condensation fin 50, the drain water W spreads from the central portion 51C toward the outer peripheral edge, so that the entire condensation fin 50 is efficiently cooled.

  Therefore, the condensing device 20B can also exhibit higher condensing performance than the conventional one. According to the condensing device 20B, not only the dust attached to the outer peripheral edge of the condensing fin 50 but also the dust attached to the upper and lower surfaces of the condensing fin 50 are removed. Since the condensed fin 50 whose surface has been cleaned is more easily cooled by the drain water, the aged deterioration of the condensed fin 50 can be further suppressed.

(Third Modification)
With reference to FIG. 13, a condensing device 20C according to a third modification of the first embodiment will be described. In the condenser 41 of the condensing device 20 </ b> C, a portion 51 </ b> D near the outer peripheral edge of the upper surface 51 of the condensing fin 50 located at the top is located below the outlet 31 </ b> T of the drain water supply unit 31. According to the condensing device 20 </ b> C, the drain water W is dropped on the portion 51 </ b> D near the outer peripheral edge of the upper surface 51 of the condensing fin 50. According to the condensing device 20C, dust attached to the outer peripheral edge of the condensing fin 50 can be removed intensively.

  Referring to FIG. 14, in condensation fin 50, dust is likely to adhere to a portion on the upstream side in the direction of flow of airflow from a blower fan (not shown) (in the direction of arrow AR 90). As shown in FIG. 14, a portion 51 </ b> D near the outer peripheral edge of the upper surface 51 of the condensing fin 50 located at the uppermost portion is preferably located on the upstream side in the direction in which the airflow flows. The upstream portion (the portion 51 </ b> D near the outer peripheral edge) in the direction in which the airflow flows among the condensation fins 50 located at the top is located below the outlet 31 </ b> T of the drain water supply unit 31.

  The drain water W dropped on the upstream side in the direction in which the airflow flows in the upper surface 51 of the condensing fin 50 mainly removes dust adhering to the outer peripheral edge on the upstream side of the condensing fin 50 and from the outer peripheral edge thereof. Since it spreads toward the center part of the condensation fin 50, the whole condensation fin 50 is cooled efficiently.

  Therefore, the condensing device 20C can also exhibit higher condensing performance than the conventional one. According to the condensing device 20C, not only the dust attached to the outer peripheral edge of the condensing fin 50 but also the dust attached to the upper and lower surfaces of the condensing fin 50 are removed. Since the condensed fin 50 whose surface has been cleaned is more easily cooled by the drain water, the aged deterioration of the condensed fin 50 can be further suppressed.

(Fourth modification)
With reference to FIG. 15, a condensing device 20D according to a fourth modification of the first embodiment will be described. In the condenser 41 of the condensing device 20D, the whole of the plurality of condensing fins 50 is disposed so as to be inclined in the same direction. The plurality of condensing fins 50 of the present embodiment are inclined downward in the vertical direction from the upstream side to the downstream side in the direction in which the airflow flows (arrow AR90 direction).

  The drain water W dropped on the upstream side of the upper surface 51 of the condensation fin 50 in the direction in which the airflow flows removes dust adhering to the outer peripheral edge on the upstream side of the condensation fin 50, and Since it spreads toward the part near the center of the condensation fin 50 from the outer periphery using an inclination, the whole condensation fin 50 is cooled efficiently.

  Therefore, the condensing device 20D can also exhibit higher condensing performance than the conventional one. According to the condensing device 20D, not only the dust attached to the outer peripheral edge of the condensing fin 50 but also the dust attached to the upper and lower surfaces of the condensing fin 50 are removed. Since the condensed fin 50 whose surface has been cleaned is more easily cooled by the drain water, the aged deterioration of the condensed fin 50 can be further suppressed.

(5th modification)
With reference to FIGS. 16 and 17, a condensing device 20 </ b> E according to a fifth modification of the first embodiment will be described. In the condenser 41 of the condensing device 20E, the plurality of condensing fins 50 are arranged so as to be inclined alternately. The plurality of condensing fins 50 according to the present embodiment are inclined from one short side toward the other short side, and are arranged such that the inclination directions of the condensing condensing fins 50 facing each other are opposite to each other.

  The drain water W dripped onto the outer peripheral edge portion 51D (see FIG. 17) of the upper surface 51 of the condensation fin 50 removes dust adhering to the outer peripheral edge of the condensation fin 50 while concentrating on the condensation fin 50. The whole of the condensing fin 50 is efficiently cooled because it spreads from the outer peripheral edge toward the central portion of the condensing fin 50 by using the inclination of. By utilizing the alternate inclination of the condensation fins 50 when the drain water W flows downward, the drain water W can be sequentially and efficiently supplied to the plurality of condensation fins 50.

  Therefore, the condensing device 20E can also exhibit higher condensing performance than the conventional one. According to the condensing device 20E, not only dust attached to the outer peripheral edge of the condensation fin 50 but also dust attached to the upper surface and the lower surface of the condensation fin 50 are removed. Since the condensed fin 50 whose surface has been cleaned is more easily cooled by the drain water, the aged deterioration of the condensed fin 50 can be further suppressed.

(Sixth Modification)
With reference to FIG. 18, a condensing device 20F according to a sixth modification of the first embodiment will be described. The condensation fins 50 (see FIG. 17) in the fifth modification described above are inclined from one short side to the other short side, and the inclination directions of the opposing condensation fins 50 are opposite to each other. Has been placed. The condensing fins 50 of the condensing device 20F of the present modification are inclined from one long side to the other long side, and are arranged so that the inclination directions of the condensing fins 50 facing each other are reversed. .

  Also with this configuration, the drain water dripped onto the portion near the outer peripheral edge of the upper surface 51 of the condensation fin 50 mainly removes dust adhering to the outer peripheral edge of the condensation fin 50, and the inclination of the condensation fin 50. , The entire condensation fin 50 is efficiently cooled. By utilizing the alternate inclination of the condensation fins 50 when the drain water flows downward, the drain water can be efficiently supplied to the plurality of condensation fins 50 sequentially.

  Therefore, the condensing device 20F can also exhibit higher condensing performance than the conventional one. According to the condensing device 20F, not only dust adhered to the outer peripheral edge of the condensation fin 50 but also dust adhered to the upper surface and the lower surface of the condensation fin 50 are removed. Since the condensed fin 50 whose surface has been cleaned is more easily cooled by the drain water, the aged deterioration of the condensed fin 50 can be further suppressed.

(Seventh Modification)
A seventh modification of the first embodiment will be described with reference to FIG. A drain water supply unit 31 having a bowl-shaped portion 31M is disposed above the condensing device 20G of the present embodiment. The flange-shaped portion 31M has a half-divided cylindrical shape, and the upper side in the vertical direction is open. The eaves-shaped portion 31M is arranged above the condensing fin 50 located at the uppermost portion, and is arranged so as to be inclined from the upper side to the lower side (outflow port 31T). The height dimension in the vertical direction from the upper end of the bowl-shaped part 31M to the upper surface 51 of the condensation fin 50 located at the uppermost part is H1.

  Referring to FIG. 20, with respect to the seventh modified example of the first embodiment described above, drain water supply unit 31 having a hose-like portion 31N is arranged above condensing device 20G1. The hose-like portion 31N has a hollow tubular shape. The hose-like portion 31N is arranged above the condensing fin 50 located at the uppermost portion, and is arranged to bend from the upper side to the lower side (outflow port 31T). The height dimension in the vertical direction from the upper end of the hose-like portion 31N to the upper surface 51 of the condensation fin 50 located at the uppermost portion is H2.

  19 and 20, the bowl-shaped portion 31 </ b> M is composed of a lower portion when the cylinder is divided in half along the horizontal direction, and does not contribute to the conveyance and dripping of the drain water W. The height of the saddle-shaped portion 31M is reduced by the height of. Space saving in the layout is achieved in the bowl-shaped portion 31M, and the height dimension H1 (see FIG. 19) can be made smaller than the height dimension H2 (see FIG. 20). Therefore, by disposing the drain water supply unit 31 having the bowl-shaped portion 31M above the condensing device 20G, the volume of the machine room 17 (see FIG. 1) is reduced, and the freezing room 11 (see FIG. 1) and the refrigeration room. The volume such as 12 (see FIG. 1) can be increased.

(Eighth modification)
With reference to FIG. 21, an eighth modification of the first embodiment will be described. In the condensing device 20H of the present embodiment, a reservoir 31P is provided in a portion on the outlet 31T side of the bowl-shaped portion 31M. Reservoir 31P has a curved shape that is recessed downward in the vertical direction. The drain water W flowing out from the evaporator 14 (see FIG. 1) to the drain water supply unit 31 is temporarily stored in the storage unit 31P before being supplied to the surface of the condensation fins 50. Drain water W is continuously supplied from the evaporator 14 (see FIG. 1) into the storage unit 31P.

  The drain water W in the storage unit 31P continues to increase until the amount of the drain water W reaches a predetermined amount. When the amount of the drain water W exceeds a predetermined amount, the drain water W flows down from the storage portion 31P toward the surface of the condensation fin 50. Since the drain water W is supplied to the surface of the condensing fin 50 in a certain amount or more, dust and the like adhering to the surface of the condensing fin 50 receives the water pressure of the drain water W and is washed away. By using the water pressure of the drain water W having a certain amount or more, the drain water W can be spread over the entire surface of the condensation fins 50.

  Therefore, by arranging the drain water supply unit 31 having the storage unit 31P above the condensing device 20H, dust is effectively removed, and the condensing device 20H can exhibit higher condensing performance than the conventional one. . The condensed fin 50 whose surface has been cleaned is more easily cooled by the drain water, and the aged deterioration of the condensed fin 50 is further suppressed.

(Ninth Modification)
With reference to FIG. 22, a ninth modification of the first embodiment will be described. In condensing device 20H1 of the present embodiment, storage portion 31Q is provided in the middle portion of drain water supply portion 31 (the portion on the upstream side from outlet 31T). Reservoir 31Q incorporates a valve or the like (not shown). The drain water W from the evaporator 14 (see FIG. 1) is temporarily stored in the storage unit 31Q before being supplied to the surface of the condensation fin 50. Drain water W is continuously supplied from the evaporator 14 (see FIG. 1) into the storage unit 31Q.

  The drain water W in the storage part 31Q continues to increase until the amount of the drain water W reaches a predetermined amount. When the amount of drain water W exceeds a predetermined amount, the valve in the reservoir 31Q is mechanically or electrically opened, and the drain water W is supplied from the reservoir 31Q to the surface of the condensation fin 50. Since the drain water W is supplied to the surface of the condensing fin 50 in a certain amount or more, dust and the like adhering to the surface of the condensing fin 50 receives the water pressure of the drain water W and is washed away. By using the water pressure of the drain water W having a certain amount or more, the drain water W can be spread over the entire surface of the condensation fins 50.

  Therefore, by arranging the drain water supply unit 31 having the storage unit 31Q above the condensing device 20H1, dust is effectively removed, and the condensing device 20H1 can exhibit higher condensing performance than the conventional one. . The condensed fin 50 whose surface has been cleaned is more easily cooled by the drain water, and the aged deterioration of the condensed fin 50 is further suppressed.

(10th modification)
A tenth modification of the first embodiment will be described with reference to FIG. A drain water supply unit 31 having a spray unit 31U is disposed above the condensing device 20J of the present embodiment. After atomizing the drain water, the spray unit 31U sprays the atomized drain water from above the condensation fin 50 toward the surface of the condensation fin 50. When the drain water is sprayed in the form of a mist, the drain water is easily evaporated on the condensation fins 50. The drain water tends to take latent heat from the condensation fins 50.

  Since almost all of the atomized drain water evaporates on the surface of the condensation fin 50, it is not necessary to provide a drain pan 94 (see FIG. 2) or the like, and the manufacturing cost can be reduced. Even if the drain pan is provided, the cleaning operation of the drain pan is almost unnecessary, and the frequency of the cleaning operation can be reduced. The sound (dropping sound) generated when the drain water falls on the drain pan or the like is also reduced, and the user's discomfort can be reduced.

(Eleventh modification)
With reference to FIG. 24, an eleventh modification of the first embodiment will be described. In the present embodiment, a drain water supply unit 31 having a spray unit 31U is arranged on the side of the condensing device 20J1. After atomizing the drain water, the spray unit 31U sprays the atomized drain water from the side of the condensation fin 50 toward the surface of the condensation fin 50. When the drain water is sprayed in the form of a mist, the drain water is easily evaporated on the condensation fins 50. The drain water tends to take latent heat from the condensation fins 50.

  Since almost all of the atomized drain water evaporates on the surface of the condensation fin 50, it is not necessary to provide a drain pan 94 (see FIG. 2) or the like, and the manufacturing cost can be reduced. Even if the drain pan is provided, the cleaning operation of the drain pan is almost unnecessary, and the frequency of the cleaning operation can be reduced. The sound (dropping sound) generated when the drain water falls on the drain pan or the like is also reduced, and the user's discomfort can be reduced.

[Embodiment 2]
With reference to FIGS. 25 and 26, condensing device 20K in the present embodiment will be described. FIG. 25 is a perspective view showing the condensing device 20K. 26 is a cross-sectional view taken along line XXVI-XXVI in FIG. In FIG. 26, only one condensing fin 50A is shown for convenience of explanation. The condensing fin 50A used in the condensing device 20K is bent at the central portion 71 in the longitudinal direction, and has a shape in which the entire condensing fin 50A is bent in a V shape toward the lower side in the vertical direction.

  The drain water supplied to the surface of the condensing fin 50A spreads from the outer peripheral edge of the condensing fin 50A toward the central portion 71 using the inclination formed in the condensing fin 50A, so that the entire condensing fin 50A is efficiently cooled. Is done. When the drain water spreads toward the central portion 71, dust on the surface of the condensation fin 50 </ b> A is also carried toward the central portion 71. The drain water collected in the vicinity of the central portion 71 then flows so as to overflow in sequence downward with dust. Dust is removed while the whole of the plurality of condensing fins 50A is efficiently cooled.

  Therefore, the condensing device 20K can also exhibit higher condensing performance than the conventional one. According to the condensing device 20K, not only dust adhered to the outer peripheral edge of the condensation fin 50A but also dust adhered to the upper surface and the lower surface of the condensation fin 50A is removed. Since the condensed fin 50A whose surface has been cleaned is more easily cooled by the drain water, the aged deterioration of the condensed fin 50A can be further suppressed. In view of the inclination direction formed in the condensation fin 50A, it is more preferable that a portion near the outer peripheral edge of the condensation fin 50A is disposed below the outlet of the drain water supply unit.

(First modification)
With reference to FIGS. 27 and 28, a condensing device 20K1 in a first modification of the second embodiment will be described. FIG. 27 is a perspective view showing the condensing device 20K1. 28 is a cross-sectional view taken along the line XXVIII-XXVIII in FIG. In FIG. 28, for convenience of explanation, only one condensing fin 50B is shown. The condensing fin 50B used in the condensing device 20K1 has a shape that bends at the central portion 72 in the longitudinal direction and the entire condensing fin 50B curves in a U-shape downward in the vertical direction.

  The drain water supplied to the surface of the condensing fin 50B spreads from the outer peripheral edge of the condensing fin 50B toward the central portion 72 using the inclination formed in the condensing fin 50B, so that the entire condensing fin 50B is efficiently cooled. Is done. When the drain water spreads toward the central portion 72, dust on the surface of the condensation fin 50 </ b> B is also carried toward the central portion 72. The drain water gathered in the vicinity of the central portion 72 then flows so as to overflow in sequence downward with dust. While the whole of the plurality of condensation fins 50B is efficiently cooled, dust is also removed.

  Therefore, the condensing device 20K1 can also exhibit higher condensing performance than the conventional one. According to the condensing device 20K1, not only the dust adhering to the outer peripheral edge of the condensing fin 50B but also the dust adhering to the upper surface and the lower surface of the condensing fin 50B are removed. Since the condensed fin 50B whose surface has been cleaned is more easily cooled by the drain water, the aged deterioration of the condensed fin 50B can be further suppressed. In view of the inclination direction formed in the condensation fin 50B, it is more preferable that a portion near the outer peripheral edge of the condensation fin 50B is disposed below the outlet of the drain water supply unit.

(Second modification)
With reference to FIG. 29, a condensing device 20K2 in a second modification of the second embodiment will be described. FIG. 29 is a cross-sectional view showing a condensing fin 50C used in the condensing device 20K2. The condensing fin 50C used in the condensing device 20K2 is provided with a recess 73 having a shape that is recessed downward. The concave portion 73 of the present embodiment is provided in a part of the upper surface 51 and is located at the approximate center in the longitudinal direction of the upper surface 51.

  The drain water supplied to the surface of the condensation fin 50C is held for a predetermined time in the recess 73 formed in the condensation fin 50C. Since each condensation fin 50C can hold the drain water with a high holding force, the condensation fin 50C can be appropriately cooled. The drain water gathered in the concave portion 73 then flows so as to overflow sequentially downward along with the dust. The whole of the plurality of condensation fins 50C is efficiently cooled, and dust is removed. Accordingly, the condensing device 20K2 can also exhibit higher condensing performance than the conventional one.

(Third Modification)
With reference to FIGS. 30 and 31, condensing device 20L according to a third modification of the second embodiment will be described. FIG. 30 is a perspective view showing the condensing device 20L. 31 is a cross-sectional view taken along line XXXI-XXXI in FIG. On the outer peripheral edge of the condensing fin 50D used in the condensing device 20L, an anti-upper portion 74M having a shape that warps upward as it goes outward of the condensing fin 50D is provided. Although the anti-upper part 74M of the present modification is provided over the entire circumference of the outer peripheral edge of the condensation fin 50D, the anti-upper part 74M may be provided only on a part of the outer peripheral edge of the condensation fin 50D.

  The drain water supplied to the surface of the condensation fin 50D is held for a predetermined time on the upper surface 51 of the condensation fin 50D by the anti-upper portion 74M formed on the condensation fin 50D. Since each condensation fin 50D can hold drain water with a high holding force, each condensation fin 50D can be appropriately cooled. The condensing device 20L can also exhibit higher condensing performance than the conventional one.

  The opposite upper portion 74M of the outer peripheral edge of the condensation fin 50D is formed by removing the mold from the lower surface 52 side to the upper surface 51 side of the condensation fin 50D along the outer peripheral edge of the condensation fin 50D when the condensation fin 50D is manufactured. It is good to have. Such an anti-upper portion 74M can be easily formed on the outer peripheral edge of the condensing fin 50D, which is advantageous in manufacturing.

(Fourth modification)
With reference to FIGS. 32 and 33, a condensing device 20L1 in a fourth modification of the second embodiment will be described. FIG. 32 is a perspective view showing the condensing device 20L1. 33 is a cross-sectional view taken along the line XXXIII-XXXIII in FIG. 32. On the outer peripheral edge of the condensing fin 50E used in the condensing device 20L1, an anti-lower part 74N having a shape that warps downward as it goes outward of the condensing fin 50E is provided. The anti-lower part 74N of this modification is provided over the entire circumference of the outer peripheral edge of the condensing fin 50E, but the anti-lower part 74N may be provided only on a part of the outer peripheral edge of the condensing fin 50E.

  The drain water supplied to the surface of the condensing fins 50E receives airflow from a blower fan (not shown), is integrated with other drain water supplied thereafter, or other drain water supplied thereafter. It is pushed by. The drain water W spreads toward the center of the condensation fin 50E or moves to the outer peripheral edge of the condensation fin 50E.

  The drain water that has reached the outer peripheral edge of the condensation fin 50E falls by being guided downward by the opposite lower portion 74N formed on the condensation fin 50E. Dust adhering to the outer peripheral edge of the condensation fin 50E is effectively removed, and the cleaned condensation fin 50E is more easily cooled by the drain water. Therefore, the condensing device 20L1 can also exhibit higher condensing performance than the conventional one.

  The opposite lower portion 74N of the outer peripheral edge of the condensing fin 50E is formed by removing the mold from the upper surface 51 side to the lower surface 52 side of the condensing fin 50E along the outer peripheral edge of the condensing fin 50E when the condensing fin 50E is manufactured. It is good to have. Such an anti-lower part 74N can be easily formed on the outer peripheral edge of the condensing fin 50E, which is convenient for manufacturing.

[Embodiment 3]
With reference to FIG. 34, the condensing device 20M in the present embodiment will be described. FIG. 34 is a perspective view showing the condensing device 20M. A through hole 59 for guiding the drain water supplied on the upper surface 51 of the condensing fin 50G downward is provided in a portion near the center of the condensing fin 50G used in the condensing device 20M.

  The drain water supplied to the surface of the condensing fin 50G receives airflow from a blower fan (not shown), is integrated with other drain water supplied thereafter, or other drain water supplied thereafter. It is pushed by. The drain water spreads toward the center of the condensation fin 50G or moves to the outer peripheral edge of the condensation fin 50G.

  The drain water that has reached the through hole 59 of the condensation fin 50G hangs down toward the next condensation fin 50G along the inner peripheral surface of the through hole 59, and then comes into contact with the condensation fin 50G and gets wet outward. spread. On the other hand, the drain water that has reached the outer peripheral edge of the condensation fin 50G hangs down toward the next lower condensation fin 50G along the outer peripheral edge of the condensation fin 50G, and then comes into contact with the condensation fin 50G toward the central side. Spreads wet. According to the condensing device 20M, since the condensing fin 50G is cooled by the drain water not only from the outer peripheral edge of the condensing fin 50G but also from the central portion of the condensing fin 50G, the entire condensing fin 50G is efficiently cooled.

  Therefore, the condensing device 20M can also exhibit higher condensing performance than the conventional one. The dust adhering to the surface of the condensation fin 50G hardly remains in the vicinity of the central portion of the condensation fin 50G, and the dust sequentially flows downward through the through hole 59. Dust adhering to the surface of the condensation fin 50G is effectively removed, and the condensation fin 50G whose surface has been cleaned is more easily cooled by the drain water, and the aging of the condensation fin 50G is further suppressed.

(First modification)
With reference to FIG. 35, a condensing device 20M1 according to a first modification of the third embodiment will be described. FIG. 35 is a cross-sectional view showing the condensing device 20M1. In the plurality of condensing fins 50G1 used in the condensing device 20M1, the through holes 59 are alternately arranged in the X direction. The through hole 59 has a projection shape obtained when the through hole 59 (59A) is projected in the vertical direction toward the condensing fin 50G1 opposed to the through hole 59 (59A), and the through hole 59 (59B) provided in the condensing fin 50G1 facing the through hole 59. Are arranged so as not to overlap with each other.

  The drain water supplied to the surface of the condensing fin 50G1 receives airflow from a blower fan (not shown), is integrated with other drain water supplied thereafter, or other drain water supplied thereafter. It is pushed by. The drain water spreads toward the center of the condensation fin 50G1 or moves to the outer peripheral edge of the condensation fin 50G1.

  The drain water that has reached the through hole 59 of the condensation fin 50G1 hangs down toward the next lower condensation fin 50G1 along the inner peripheral surface of the through hole 59, and then comes into contact with the condensation fin 50G1 and gets wet outward. It spreads and is temporarily held on the upper surface 51 of the condensation fin 50G1. By arranging the through holes 59 in a so-called staggered manner, the drain water is easily held in each of the condensing fins 50G1 for a predetermined time. According to the condensing device 20M1, since the condensing fin 50G1 is cooled not only from the outer peripheral edge of the condensing fin 50G1, but also from the central portion of the condensing fin 50G1, the entire condensing fin 50G1 is efficiently cooled.

  Therefore, the condensing device 20M1 can also exhibit higher condensing performance than the conventional one. The dust adhering to the surface of the condensation fin 50G1 hardly remains in the vicinity of the center of the condensation fin 50G1, and the dust sequentially flows down through the through hole 59. The dust adhering to the surface of the condensation fin 50G1 is effectively removed, and the condensation fin 50G1 whose surface has been cleaned is more easily cooled by the drain water, and the aging of the condensation fin 50G1 is further suppressed.

(Second modification)
With reference to FIG. 36, a condensing device 20M2 according to a second modification of the third embodiment will be described. FIG. 36 is a cross-sectional view showing the condensing device 20M2. The condensing fins 50G2 of the condensing device 20M2 have a shape in which the entire condensing fins 50G2 are bent in a V shape downward in the vertical direction, and are shifted to the side from the central portion 71 of the condensing fins 50G2. A through hole 59 is provided.

  Part of the drain water supplied to the surface of the condensing fin 50G2 spreads from the outer peripheral edge of the condensing fin 50G2 toward the central portion 71 using the slope formed in the condensing fin 50G2, and therefore the entire condensing fin 50G2 It is cooled efficiently. On the other hand, after the other part of the drain water supplied to the surface of the condensation fin 50G2 hangs down toward the condensation fin 50G2 (not shown) one lower along the inner peripheral surface of the through hole 59, It contacts the condensation fin 50G2. According to the condensing device 20M2, since the condensing fin 50G2 is cooled not only from the outer peripheral edge of the condensing fin 50G2, but also from the central portion of the condensing fin 50G2, the entire condensing fin 50G2 is efficiently cooled.

  Therefore, the condensing device 20M2 can also exhibit higher condensing performance than the conventional one. The dust adhering to the surface of the condensing fin 50G2 hardly remains near the center of the condensing fin 50G2, and the dust sequentially flows down through the through hole 59. The dust adhering to the surface of the condensation fin 50G2 is effectively removed, and the condensation fin 50G2 whose surface has been cleaned is more easily cooled by the drain water, and the deterioration over time of the condensation fin 50G2 is further suppressed.

(Third Modification)
With reference to FIG. 37, a condensing device 20M3 according to a third modification of the third embodiment will be described. FIG. 37 is a cross-sectional view showing the condensing device 20M3. The condensing fins 50G3 of the condensing device 20M3 have a shape in which the entire condensing fins 50G3 are curved in a U-shape downward in the vertical direction, and are shifted to the side from the central portion 72 of the condensing fins 50G3. A through hole 59 is provided.

  Part of the drain water supplied to the surface of the condensing fin 50G3 spreads from the outer peripheral edge of the condensing fin 50G3 toward the central portion 72 by using the inclination formed in the condensing fin 50G3, so that the entire condensing fin 50G3 is It is cooled efficiently. On the other hand, after the other part of the drain water supplied to the surface of the condensation fin 50G3 hangs down toward the condensation fin 50G3 (not shown) one lower along the inner peripheral surface of the through hole 59, It contacts the condensation fin 50G3. According to the condensing device 20M3, since the condensing fin 50G3 is cooled not only from the outer peripheral edge of the condensing fin 50G3 but also from the central portion of the condensing fin 50G3, the entire condensing fin 50G3 is efficiently cooled.

  Therefore, the condensing device 20M3 can also exhibit higher condensing performance than the conventional one. The dust adhering to the surface of the condensing fin 50G3 hardly remains near the center of the condensing fin 50G3, and the dust flows down through the through hole 59 sequentially. Dust adhering to the surface of the condensation fin 50G3 is effectively removed, and the condensation fin 50G3 whose surface has been cleaned is more easily cooled by the drain water, and the deterioration over time of the condensation fin 50G3 is further suppressed.

[Embodiment 4]
With reference to FIG. 38, the condensing device 20N in the present embodiment will be described. FIG. 38 is a perspective view showing the condensing device 20N. The outer peripheral edge of the condensing fin 50H used in the condensing device 20N includes a cut portion 75 extending toward the inside of the condensing fin 50H. In the present embodiment, cut portions 75 are provided in each of outer peripheral edge 54 (one short side) of condensing fin 50H and outer peripheral edge 56 (the other short side) of condensing fin 50H.

  The cut portion 75 in the present embodiment has a tapered shape that becomes narrower toward the inside of the condensation fin 50H. The notch 75 may have a rectangular shape that does not become narrower toward the inside of the condensation fin 50H, or has a tapered shape that becomes wider as it goes toward the inside of the condensation fin 50H. You may do it. The innermost portion of the cut portion 75 in the present embodiment further has a pointed shape. The innermost portion of the cut portion 75 may be rounded.

  The drain water supplied to the surface of the condensing fin 50H receives airflow from a blower fan (not shown), is integrated with other drain water supplied thereafter, or other drain water supplied thereafter. It is pushed by. The drain water spreads toward the central portion of the condensation fin 50H or moves to the outer peripheral edge of the condensation fin 50H.

  The drain water that has reached the cut portion 75 of the condensation fin 50H hangs down toward the next lower condensation fin 50H along the inner peripheral surface of the cut portion 75 (see arrow AR10). Since the notch 75 in this Embodiment has the taper shape which becomes narrow as it goes inside the condensation fin 50H, the drain water which reached the notch 75 is the inner periphery of the notch 75. It can sag smoothly along the surface.

  Furthermore, since the innermost portion of the cut portion 75 in the present embodiment has a sharp shape, the surface tension of the cut portion 75 to the drain water is small, and the drain that has reached the cut portion 75 is reached. The water can sag more smoothly along the inner peripheral surface of the cut portion 75 toward the lower condensation fin 50H. The drain water dripping onto the lower condensation fin 50H spreads wet on the surface of the condensation fin 50H toward the center. According to the condensing device 20H, the drain water effectively wets and spreads from the outer peripheral edge of the condensing fin 50H toward the center, so that the entire condensing fin 50H is efficiently cooled.

  Therefore, the condensing device 20N can also exhibit higher condensing performance than the conventional one. The dust adhering to the surface of the condensation fins 50H hardly remains on the surface of the condensation fins 50H, and the dusts sequentially flow downward through the cut portions 75. The dust adhering to the surface of the condensation fin 50H is effectively removed, and the condensation fin 50H whose surface has been cleaned is more easily cooled by the drain water, and the aging of the condensation fin 50H is further suppressed.

(First modification)
With reference to FIG. 39, a condensing device 20N1 according to a first modification of the fourth embodiment will be described. FIG. 39 is a perspective view showing a condensing fin 50H1 used in the condensing device 20N1. The outer peripheral edge of the condensing fin 50H1 used in the condensing device 20N1 also includes a cut portion 75 extending toward the inside of the condensing fin 50H1. In this modification, the notch part 75 is provided in each of the outer periphery 53 (one long side) of the condensation fin 50H1 and the outer periphery 55 (the other long side) of the condensation fin 50H1.

  On the outer peripheral edge of the condensation fin 50H1, an anti-lower part 74N having a shape that warps downward as it goes to the outside of the condensation fin 50H1 is also provided. In this modification, anti-lower portions 74N are provided on each of the outer peripheral edge 54 (one short side) of the condensing fin 50H1 and the outer peripheral edge 56 (the other short side) of the condensing fin 50H1.

  The drain water supplied to the surface of the condensing fins 50H1 receives airflow from a blower fan (not shown), is integrated with other drain water supplied thereafter, or other drain water supplied thereafter. It is pushed by. The drain water spreads toward the central portion of the condensation fin 50H1 or moves to the outer peripheral edge of the condensation fin 50H1.

  The drain water that has reached the cut portion 75 of the condensation fin 50H1 hangs down toward the next lower condensation fin 50H1 (not shown) along the inner peripheral surface of the cut portion 75, and then enters the condensation fin 50H1. Touch and spread toward the center. On the other hand, the drain water that has reached the outer peripheral edges 54 and 56 of the condensing fins 50H1 is dropped so as to be guided downward by the opposite lower portion 74N formed in the condensing fins 50H1, and the condensing fins 50H1 (one lower) ( (Not shown), then comes into contact with the condensation fins 50H1 and spreads wet toward the center.

  According to the condensing device 20N1, since the condensing fin 50H1 is cooled by the drain water not only from the outer peripheral edge of the condensing fin 50H1, but also from the central side of the condensing fin 50H1, the entire condensing fin 50H1 is efficiently cooled. Dust adhering to the outer peripheral edges 54 and 56 of the condensation fin 50H1 is effectively removed, and the cleaned condensation fin 50H1 is more easily cooled by the drain water.

  Therefore, the condensing device 20N1 can also exhibit higher condensing performance than the conventional one. The dust adhering to the surface of the condensing fin 50H1 hardly remains on the surface of the condensing fin 50H1, and the dust flows down sequentially through the cut portion 75 and the opposite lower portion 74N. The dust adhering to the surface of the condensation fin 50H1 is effectively removed, and the condensation fin 50H1 whose surface has been cleaned is more easily cooled by the drain water, and the deterioration over time of the condensation fin 50H1 is further suppressed.

(Second modification)
With reference to FIG. 40, a condensing device 20N2 according to a second modification of the fourth embodiment will be described. FIG. 40 is a perspective view showing the condensing device 20N2. In the plurality of condensing fins 50H2 used in the condensing device 20N2, the cut portions 75 are alternately arranged in the X direction. The cut portion 75 has a projection shape obtained when the cut portion 75 (75A) is projected in the vertical direction toward the condensing fin 50H2 facing the cut portion 75 (75A). (75B) and are arranged so as not to overlap.

  The drain water supplied to the surface of the condensing fins 50H2 receives an air flow from a blower fan (not shown), is integrated with other drain water supplied thereafter, or other drain water supplied thereafter. It is pushed by. The drain water spreads toward the center of the condensation fin 50H2 or moves to the outer peripheral edge of the condensation fin 50H2.

  The drain water that has reached the cut portion 75 of the condensation fin 50H2 hangs down toward the next condensation fin 50H2 along the inner peripheral surface of the cut portion 75, and then comes into contact with the condensation fin 50H2 toward the center. It spreads wet and is temporarily held on the upper surface 51 of the condensation fin 50H2. By arranging the cut portions 75 in a so-called staggered manner, the drain water is easily held in each of the condensing fins 50H2 for a predetermined time. According to the condensing device 20N2, since the condensing fin 50H2 is cooled not only from the outer peripheral edge of the condensing fin 50H2, but also from the central portion of the condensing fin 50H2, the entire condensing fin 50H2 is efficiently cooled.

  Therefore, the condensing device 20N2 can also exhibit higher condensing performance than the conventional one. The dust adhering to the surface of the condensation fin 50H2 hardly remains in the vicinity of the central portion of the condensation fin 50H2, and the dust sequentially flows down through the cut portion 75. The dust adhering to the surface of the condensation fin 50H2 is effectively removed, and the condensation fin 50H2 whose surface has been cleaned is more easily cooled by the drain water, and the deterioration over time of the condensation fin 50H2 is further suppressed.

(Third Modification)
With reference to FIG. 41, a condensing device 20N3 according to a third modification of the fourth embodiment will be described. FIG. 41 is a perspective view showing condensing fins 50H3 used in the condensing device 20N3. In the condensation fin 50H3, the outer peripheral edge of the condensation fin 50H3 forming the cut portion 75 has a surface shape that curves downward from the upper surface 51 of the condensation fin 50H3 toward the inside of the cut portion 75.

  The drain water supplied to the surface of the condensing fins 50H3 receives airflow from a blower fan (not shown), is integrated with other drain water supplied thereafter, or other drain water supplied thereafter. It is pushed by. The drain water spreads toward the center of the condensation fin 50H3 or moves to the outer peripheral edge of the condensation fin 50H3.

  The drain water that has reached the outer peripheral edge of the condensation fin 50H3 falls by being guided downward by the curved surface inside the notch 75 formed in the condensation fin 50H3. The drain water hangs down toward the next condensed fin 50H3 (not shown) along the curved surface inside the cut portion 75, and then comes into contact with the condensed fin 50H3 and spreads wet toward the center side. . Dust adhering to the surface of the condensation fin 50H3 is effectively removed, and the cleaned condensation fin 50H3 is more easily cooled by the drain water. Accordingly, the condensing device 20N3 can also exhibit higher condensing performance than the conventional one.

(Fourth modification)
Referring to FIG. 42, a condensing device 20P in a fourth modification of the fourth embodiment will be described. FIG. 42 is a plan view showing condensing fins 50J used in condensing device 20P. The outer peripheral edge of the condensation fin 50J also includes a cut portion 75 extending toward the inside of the condensation fin 50J. The cut portion 75 of the present modified example does not become narrower toward the inside of the condensing fin 50J, but has a rectangular shape. Also with this configuration, the same operations and effects as described above can be obtained.

[Embodiment 5]
Referring to FIG. 43, the condensing device 20Q in the present embodiment will be described. FIG. 43 is a plan view showing a condensation fin 50K used in the condenser device 20Q. The outer peripheral edge of the condensation fin 50 </ b> K includes a concavo-convex portion 76.

  The concavo-convex portion 76 is formed by arranging a plurality of convex portions 77 that are convex toward the outside of the condensation fin 50K and a plurality of concave portions 78 that are concave toward the inside of the condensation fin 50K along the circumferential direction. ing. The uneven | corrugated | grooved part 76 of this Embodiment has what is called a sawtooth shape (a jagged shape). Although the uneven portion 76 of the present embodiment is provided over the entire circumference of the outer peripheral edge of the condensing fin 50K, the uneven portion 76 may be provided only on a part of the outer peripheral edge of the condensing fin 50K.

  When cooling air from a blower fan (not shown) comes into contact with the serrated irregularities 76 provided on the outer peripheral edge of the condensing fin 50K, it exists between the cooling air and the surface of the condensing fin 50K. The boundary layer is easily broken by the uneven portion 76. As a result, heat exchange performed on the surface of the condensation fin 50K is promoted, and the condensation fin 50K can exhibit high condensation performance.

(First modification)
Referring to FIG. 44, a condensing device 20Q1 in the first modification of the fifth embodiment will be described. FIG. 44 is a plan view showing condensing fins 50K1 used in condensing device 20Q1. The outer peripheral edge of the condensation fin 50 </ b> K <b> 1 also includes the uneven portion 76. The uneven portion 76 of this modification has a so-called triangular wave shape. The convex portion 77 of the concave-convex portion 76 has a tapered shape that tapers toward the outside of the condensation fin 50K1. The curvature radius of the outermost portion of the convex portion 77 is preferably 0.5 mm or less.

  In this modification, the notch 75 is provided in each of the outer peripheral edge 54 (one short side) of the condensing fin 50K1 and the outer peripheral edge 56 (the other short side) of the condensing fin 50K1. The uneven | corrugated | grooved part 76 of this modification is provided over the perimeter of the outer periphery of the condensation fin 50K1 except the part in which the notch part 75 is provided.

  Even when cooling air from a blower fan (not shown) comes into contact with the triangular wave-shaped uneven portion 76 provided on the outer peripheral edge of the condensing fin 50K1, it exists between the cooling air and the surface of the condensing fin 50K1. The existing boundary layer is easily broken by the concavo-convex portion 76. As a result, heat exchange performed on the surface of the condensation fin 50K1 is promoted, and the condensation fin 50K1 can exhibit high condensation performance.

  Since the convex portion 77 has a tapered shape that tapers toward the outside of the condensing fin 50K1, the boundary layer existing between the cooling air and the surface of the condensing fin 50K1 is more formed by the uneven portion 76. It becomes easier to be destroyed. The heat exchange performed on the surface of the condensation fin 50K1 is further promoted, and the condensation fin 50K1 can exhibit higher condensation performance. When the radius of curvature of the outermost portion of the convex portion 77 is 0.5 mm or less, a higher effect can be obtained.

(Second modification)
With reference to FIGS. 45 to 48, a condensing device 20Q2 in a second modification of the fifth embodiment will be described. FIG. 45 is a perspective view showing the condensing device 20Q2. FIG. 46 is a plan view showing condensing fins 50K2 used in condensing device 20Q2. FIG. 47 is a perspective view showing a state when cooling air is supplied from the blower fan 90 to the condensing device 20Q2. FIG. 48 is another perspective view showing a state when cooling air is supplied from the blower fan 90 to the condensing device 20Q2.

  As shown in FIGS. 45 and 46, the outer peripheral edge of the condensation fin 50 </ b> K <b> 2 also includes an uneven portion 76. The convex part 77 (refer FIG. 46) of the uneven | corrugated | grooved part 76 has a taper shape which tapers as it goes to the outer side of the condensation fin 50K2. The curvature radius of the outermost portion of the convex portion 77 is preferably 0.5 mm or less. The concave portion 78 (see FIG. 46) of the concave and convex portion 76 has a semicircular arc shape that connects the adjacent convex portions 77 to each other. The concave portion 78 (see FIG. 46) of the concavo-convex portion 76 is not limited to a semicircular arc shape, and has a smooth curved shape that connects adjacent convex portions 77 (for example, a curved shape having no concavo-convex shape). You may have.

  Also in this modification, the notch part 75 is provided in each of the outer periphery 54 (one short side) of the condensation fin 50K2 and the outer periphery 56 (the other short side) of the condensation fin 50K2. The uneven | corrugated | grooved part 76 of this modification is provided over the perimeter of the outer periphery of the condensation fin 50K2, except the part in which the notch part 75 is provided.

  47 and 48, even when the cooling air from the blower fan 90 contacts the concavo-convex portion 76 provided on the outer peripheral edge of the condensing fin 50K2, the cooling air and the surface of the condensing fin 50K2 are also in contact The existing boundary layer is easily broken by the uneven portion 76. As a result, heat exchange performed on the surface of the condensation fin 50K2 is promoted, and the condensation fin 50K2 can exhibit high condensation performance.

  Since the convex portion 77 has a tapered shape that tapers toward the outside of the condensing fin 50K2, the boundary layer existing between the cooling air and the surface of the condensing fin 50K2 is more formed by the uneven portion 76. It becomes easier to be destroyed. The heat exchange performed on the surface of the condensation fin 50K2 is further promoted, and the condensation fin 50K2 can exhibit higher condensation performance. When the radius of curvature of the outermost portion of the convex portion 77 is 0.5 mm or less, a higher effect can be obtained.

  In the condensing fin 50K2, the convex portion 77 has a tapered shape that tapers toward the outside of the condensing fin 50K2. Therefore, when the cooling air contacts the convex portion 77, the convex portion 77 is at the base end. A vortex (see arrow DR70 in FIG. 48) is generated. Due to the vortex generated using the convex portion 77 as a base end, a vortex having a base end near the concave portion 78 is also generated. The generation of these vortices is the same for the condensation fin 50K (see FIG. 43) of the fifth embodiment and the condensation fin 50K1 (see FIG. 44) of the first modification.

  The length (peripheral length) of the outer peripheral edge of the condensation fin 50K2 is substantially equal to that of the condensation fin 50K2 and has a rectangular shape in plan view (rectangular fin without the uneven portion 76). Longer than the length. Although the condensation fin 50K2 has a relatively long outer peripheral edge, the dust 200 is difficult to adhere to the outer peripheral edge of the condensation fin 50K2. The vortex (arrow DR70) exerts a twisting force on the dust 200 that is about to adhere to the outer peripheral edge of the condensation fin 50K2, and the dust 200 does not adhere to the outer peripheral edge of the condensation fin 50K2 and flows along with the vortex flow. Flows downstream.

  Therefore, the condensing device 20Q2 of this modification also has a high heat dissipation performance, and can exhibit a higher condensing performance than the conventional one. The condensation fin 50K2 from which the dust 200 has been effectively removed and the surface has been cleaned is more easily cooled by the drain water. Since the dust 200 is effectively removed, the aged deterioration of the condensation fins 50K2 can be suppressed.

(Third Modification)
Referring to FIG. 49, a condensing device 20Q3 in a third modification of the fifth embodiment will be described. FIG. 49 is a plan view showing condensing fins 50K3 used in condensing device 20Q3. The outer peripheral edge of the condensation fin 50 </ b> K <b> 3 also includes the uneven portion 76. The convex portion 77 of the concave-convex portion 76 has a tapered shape that tapers toward the outside of the condensation fin 50K2. The curvature radius of the outermost portion of the convex portion 77 is preferably 0.5 mm or less. The concave portion 78 of the concave-convex portion 76 has a shape that connects the convex portions 77 that are separated and adjacent to each other in a straight line.

  Even when the cooling air from the blower fan 90 comes into contact with the concavo-convex portion 76 provided on the outer peripheral edge of the condensation fin 50K3, the boundary layer existing between the cooling air and the surface of the condensation fin 50K3 is the concavo-convex portion. It becomes easy to be destroyed by 76. As a result, heat exchange performed on the surface of the condensation fin 50K3 is promoted, and the condensation fin 50K3 can exhibit high condensation performance.

  Also in the condensation fin 50K3, the convex portion 77 has a tapered shape that tapers toward the outside of the condensation fin 50K3. Therefore, when the cooling air contacts the convex portion 77, the convex portion 77 is at the base end. A vortex (arrow DR70) is generated. The vortex (arrow DR70) exerts a twisting force on the dust 200 that is about to adhere to the outer peripheral edge of the condensing fin 50K3, and the dust 200 does not adhere to the outer peripheral edge of the condensing fin 50K3 and flows downstream along with the vortex flow. It flows toward.

  Therefore, the condensing device 20Q3 of this modification also has high heat dissipation performance, and can exhibit higher condensing performance than the conventional one. Condensation fin 50K3 from which dust 200 has been effectively removed and the surface has been cleaned is more easily cooled by drain water. Since the dust 200 is effectively removed, the aged deterioration of the condensation fins 50K3 can be suppressed.

(Fourth modification)
With reference to FIGS. 50 to 52, a condensing device 20R in a fourth modification of the fifth embodiment will be described. FIG. 50 is a side view showing the condensing device 20R. FIG. 51 is a side view showing a condensing fin 50L used in the condensing device 20R. FIG. 52 is a side view showing a state when cooling air is supplied from the blower fan (not shown) to the condensing device 20R. The outer peripheral edge of the condensing fin 50L used in the condensing device 20R also includes an uneven portion 76.

  As shown in FIGS. 50 and 51, the condensing fin 50L curves from the lower surface 52 side to the upper surface 51 side of the condensing fin 50L as it goes from the portion near the concave portion 78 to the portion near the convex portion 77. Is formed. The outermost part of the convex portion 77 has an acute angle shape directed toward the upper surface 51 side of the condensation fin 50L.

  Referring to FIG. 51, the curvature radius R2 of the outermost portion of the convex portion 77 is preferably 0.5 mm or less. The radius of curvature R2 of the outermost portion of the plurality of convex portions 77 may be the same value or may include two or more types of values. When the outermost portion of the convex portion 77 has a wedge shape, the wedge angle θ2 is preferably 90 ° or less. The wedge angles θ2 of the plurality of convex portions 77 may be the same value, or may include two or more types of values.

  The height dimension H2 from the upper surface 51 of the convex portion 77 in the direction perpendicular to the condensing fin 50L (the vertical direction in this modification) is the case where the convex portion 77 of the concave and convex portion 76 is formed by bending, for example. For example, the thickness is 0.01 mm to 0.5 mm when the convex portion 77 of the concave and convex portion 76 is formed according to the direction in which the mold is removed. The height dimension H2 of the plurality of convex portions 77 may be the same value or may include two or more values. In the direction parallel to the upper surface 51 of the condensation fin 50L (in the present modification, the horizontal direction), the interval P2 between the adjacent convex portions 77 is, for example, 3.3 mm. The interval P2 between the plurality of convex portions 77 may be the same value, or may include two or more types of values.

  In the direction parallel to the upper surface 51 of the condensation fin 50L (in the present modification, the horizontal direction), the width W2 of the convex portion 77 is, for example, 1.38 mm. The width W2 of the plurality of convex portions 77 may be the same value or may include two or more values.

  Referring to FIG. 50, drain water W supplied to the surface of condensation fin 50L is easily held for a predetermined time on upper surface 51 of condensation fin 50L by convex portion 77 formed on condensation fin 50L. Become. Since the outermost portion of the convex portion 77 has an acute angle shape directed toward the upper surface 51, the drain water W can be held longer on the upper surface 51 of the condensation fin 50 </ b> L. it can. Since each condensation fin 50L can hold the drain water W with a high holding force, the condensation fin 50L can be cooled appropriately. The condensing device 20R can also exhibit higher condensing performance than the conventional one.

  Referring to FIG. 52, on the other hand, when cooling air (see arrow AR90) from a blower fan (not shown) comes into contact with the concavo-convex portion 76 provided on the outer peripheral edge of the condensation fin 50L, the cooling air and the condensation are condensed. The boundary layer that exists between the surfaces of the fins 50 </ b> L is easily broken by the uneven portions 76. In this modified example, the condensation fin 50L is formed so as to curve from the lower surface 52 side toward the upper surface 51 side from the portion closer to the concave portion 78 toward the portion closer to the convex portion 77, so that the boundary layer The area where is destroyed becomes larger. As a result, the heat exchange performed on the surface of the condensation fin 50L is further promoted. The condensation fin 50L can exhibit high condensation performance.

  Also in the condensing fin 50L, the convex portion 77 has a tapered shape that tapers toward the outside of the condensing fin 50L. Therefore, when the cooling air comes into contact with the convex portion 77, the convex portion 77 becomes the base end. A vortex (arrow DR70) is generated. When the shapes and arrangement intervals of the plurality of convex portions 77 are different, the vortex is formed in a more disturbed state. The vortex (arrow DR70) exerts a twisting force on the dust 200 that is about to adhere to the outer peripheral edge of the condensing fin 50L, and the dust 200 does not adhere to the outer peripheral edge of the condensing fin 50L and flows downstream along with the vortex flow. It flows toward.

  Therefore, the condensing device 20R of this modification also has high heat dissipation performance, and can exhibit higher condensing performance than the conventional one. Condensation fin 50L from which dust 200 has been effectively removed and the surface has been cleaned is more easily cooled by drain water W. Since the dust 200 is effectively removed, the aged deterioration of the condensation fins 50L can be suppressed. According to this modification, for example, the condensation performance of the condenser 20R alone is expected to increase by about 20%, and the entire refrigerator-freezer is expected to increase the energy use efficiency by about 10%.

  The condensation fin 50L of this modification is formed so as to curve from the lower surface 52 side to the upper surface 51 side of the condensation fin 50L as it goes from the portion closer to the concave portion 78 to the portion closer to the convex portion 77. The condensation fin 50L of this modification may be formed so as to curve from the upper surface 51 side to the lower surface 52 side of the condensation fin 50L as it goes from the portion near the concave portion 78 toward the portion near the convex portion 77. Good.

  In this case, the drain water that has reached the outer peripheral edge of the condensation fin 50L falls so as to be guided downward. Dust adhering to the outer peripheral edge of the condensation fin 50L is effectively removed, and the cleaned condensation fin 50L is more easily cooled by the drain water. Even in such a condensed fin 50 </ b> L, when the cooling air contacts the convex portion 77, the boundary layer is destroyed and a vortex having the convex portion 77 as the base end is generated. The dust 200 flows toward the downstream side together with the vortex flow without adhering to the outer peripheral edge of the condensation fin 50L. The dust 200 is effectively removed, and high heat dissipation performance is obtained.

[Embodiment 6]
Referring to FIGS. 53 and 54, condensing device 20S in the present embodiment will be described. FIG. 53 is a perspective view showing the condensing device 20S. FIG. 54 is a perspective view showing an end plate 80 used in the condensing device 20S. As shown in FIG. 53, the condensing device 20 </ b> S further includes an end plate 80 disposed so as to face the condensing fin 50 located at the uppermost portion from above.

  Referring to FIG. 54, end plate 80 includes three flat plate portions 80L, 80M, 80N and four water guide holes 83-86. The flat plate portions 80L, 80M, and 80N each have a flat plate shape. The flat plate portion 80L is a portion facing the condensing fin 50 located at the top of the condensers 41 to 43 (see FIG. 53) from above. The flat plate portion 80M is provided in a direction perpendicular to the flat plate portion 80L, and extends downward from the end of the flat plate portion 80L in the vertical direction. The flat plate portion 80N is a portion facing the condensing fin 50 located at the uppermost portion in the condenser 44 (see FIG. 53) from above, and is perpendicular to the flat plate portion 80M from the end of the flat plate portion 80M. It extends towards.

  The water guide holes 83 to 85 are provided in the flat plate portion 80 </ b> L and penetrate the flat plate portion 80 </ b> L from the upper surface 81 toward the lower surface 82. The water guide hole 83 has a shape extending in the X direction, and the length of the water guide hole 83 in the X direction is from an insertion hole 57 (see FIG. 4) provided in the condensation fin 50 of the condenser 41 (see FIG. 53). It corresponds to the dimension up to the insertion hole 58 (see FIG. 4). In a state where the end plate 80 is attached above the condensers 41 to 44, the water guide holes 83 extend along the longitudinal direction (X direction) of the condensation fins 50 of the condenser 41.

  The water guide hole 84 and the water guide hole 85 each have a shape extending in the Y direction, and are formed so as to have a parallel positional relationship. The length of the water introduction hole 84 in the Y direction is from the insertion hole 57 (see FIG. 4) provided in the condensation fin 50 of the condenser 42 (see FIG. 53) to the condensation fin 50 of the condenser 43 (see FIG. 53). It corresponds to the dimension up to the provided insertion hole 57. The length of the water introduction hole 85 in the Y direction is from the insertion hole 58 (see FIG. 4) provided in the condensation fin 50 of the condenser 42 (see FIG. 53) to the condensation fin 50 of the condenser 43 (see FIG. 53). It corresponds to the dimension up to the insertion hole 58 provided. In a state where the end plate 80 is mounted above the condensers 41 to 44, the water guide holes 83 and 84 extend along the short direction (Y direction) of the condensation fins 50 of the condensers 42 and 43. .

  The water guide hole 86 is provided in the flat plate portion 80N and penetrates the flat plate portion 80N from the upper surface 81 toward the lower surface 82. The water guide hole 86 has a shape extending in the X direction, and the length of the water guide hole 86 in the X direction is from an insertion hole 57 (see FIG. 4) provided in the condensation fin 50 of the condenser 44 (see FIG. 53). It corresponds to the dimension up to the insertion hole 58 (see FIG. 4). In a state in which the end plate 80 is attached above the condensers 41 to 44, the water guide holes 86 extend along the longitudinal direction (X direction) of the condensation fins 50 of the condenser 44.

  One drain water supply unit 35 is disposed above the condensing device 20S of the present embodiment. The drain water supply unit 35 has a tubular shape, and an outlet 35T through which drain water flows out is provided at the lower end. The end plate 80 is disposed such that a portion 80P (see FIG. 54) near the center of the flat plate portion 80L is positioned below the outflow port 35T.

  The refrigerant pipe 60 (see FIG. 53) is inserted into the water guide holes 83 to 86 of the end plate 80 configured as described above. The refrigerant pipe 60 is held by the end plate 80. The end plate 80 is fixed to a housing (not shown) constituting a refrigerator-freezer or the like. The refrigerant pipe 60 inserted into the water guide holes 83 to 86 is fixed to a housing or the like through the end plate 80. The refrigerant pipe 60 is held by the end plate 80, and the plurality of condensation fins 50 fixed to the refrigerant pipe 60 can form a stable installation state.

  The drain water dropped from the outlet 35T contacts the upper surface 81 of the end plate 80, and forms water droplets on the upper surface 81 or spreads wet on the upper surface 81. Thereafter, the drain water receives an air flow from the blower fan 90 (see FIG. 53), is integrated with the drain water supplied thereafter, or is pushed by the drain water supplied thereafter. The drain water moves toward the water guide holes 83 to 86 or moves toward the outer peripheral edge of the end plate 80.

  The drain water that has reached the water guide holes 83 to 86 hangs downward along the inner peripheral surface of the end plate 80 that forms the water guide holes 83 to 86. The drain water hangs down (moves downward) toward the upper surface of the condensation fin 50 located at the top of the condensers 41 to 44. The drain water that moves downward and contacts the condensing fins 50 receives airflow from the blower fan 90, is integrated with other drain water that moves downward thereafter, or is pushed by other drain water that moves downward thereafter. Or

  The drain water moves toward the outer peripheral edge of the condensing fin 50 and then hangs down toward the outer peripheral edge of the condensing fin 50 disposed one level lower. A part of the drain water evaporates when moving, and takes away latent heat from the condensation fins 50. The drained water that has not evaporated reaches the condensing fin 50 located at the lowermost part, and then falls into the drain pan 94.

  The drain water dripped from the outlet 35 </ b> T exchanges heat with the condensation fin 50 or evaporates on the condensation fin 50 while repeating such movement and dropping (downward movement). In the condensing device 20S, the plurality of condensing fins 50 are arranged so as to be spaced apart from each other in the vertical direction (arrow Z direction) and the surfaces of the condensing fins 50 adjacent in the vertical direction are opposed to each other in the vertical direction. Each of the condensation fins 50 can hold drain water for a predetermined time.

  Accordingly, the drain water dripped onto the end plate 80 from the outlet 35T effectively repeats the movement and the fall (downward movement) as described above, thereby effectively condensing each condensing fin 50. Can be cooled. Such an operation is commonly performed in the condensers 41 to 44 (see FIG. 5).

  The plurality of condensed fins 50 are not only cooled by the airflow flowing around the plurality of condensed fins 50 but also sufficiently drained by the drain water supplied from the drain water supply unit 35 to the plurality of condensed fins 50. Can be refrigerated. Therefore, the condensing device 20S of the present embodiment also has a high heat dissipation performance, and can exhibit a higher condensing performance than the conventional one.

  As described above, the refrigerant pipe 60 is held by the end plate 80, and the plurality of condensing fins 50 fixed to the refrigerant pipe 60 can form a stable installation state. The drain water is once supplied onto the upper surface 81 of the end plate 80 and then spreads wet and flows into the water guide holes 83 to 86. In the present embodiment, the drain water can be sufficiently distributed to the condensers 41 to 44 by one drain water supply unit 35. A plurality of drain water supply units may be used as necessary.

  The water guide holes 83 to 86 serve to fix the refrigerant pipe 60 to the end plate 80 and to guide the drain water supplied from the drain water supply unit 35 onto the upper surface 81 of the end plate 80 downward. It also serves as a function. The water guide holes 83 to 86 provided in the end plate 80 have high convenience in terms of design layout.

  With respect to the condenser 41, the water guide holes 83 provided in the end plate 80 are located above the central portion of the condensation fins 50 located at the top. The drain water dripping down through the water guide hole 83 falls to a portion near the center of the condensation fin 50 located at the uppermost part in the condenser 41. On the upper surface of the condensation fin 50, the drain water spreads from the central portion toward the outer peripheral edge, so that the entire condensation fin 50 is efficiently cooled. Similar actions and effects can be obtained from the positional relationship between the condenser 44 and the water guide holes 86 provided in the end plate 80.

(First modification)
A first modification of the sixth embodiment will be described with reference to FIGS. FIG. 55 is a perspective view showing an end plate 80A in the present modification. 56 is a cross-sectional view taken along line LVI-LVI in FIG. 57 is a cross-sectional view taken along line LVII-LVII in FIG. 55.

  As shown in FIGS. 55 to 57, the end plate 80 </ b> A also includes water guide holes 83 to 86. The inner peripheral surface of the end plate 80A that forms the water guide holes 83 to 86 has a surface shape that curves downward from the upper surface 81 of the end plate 80A toward the inside of the water guide holes 83 to 86.

  The drain water W supplied to the surface of the end plate 80A receives an airflow from a blower fan (not shown), is integrated with other drain water W supplied thereafter, or is supplied after that. It is pushed by the drain water W. The drain water W spreads toward the center of the end plate 80A or moves to the outer peripheral edge of the end plate 80A.

  The drain water W that has reached the water guide holes 83 to 86 of the end plate 80A falls by being guided downward by the curved shape formed in the water guide holes 83 to 86. Most of the drain water W supplied to the end plate 80 </ b> A is used for cooling the condensers 41 to 44. Therefore, the condensing device including the end plate 80A can also exhibit higher condensing performance than the conventional one.

  The inner peripheral surface of the end plate 80A forming the water guide holes 83 to 86 may have a surface shape that bends downward from the upper surface 81 of the end plate 80A toward the inside of the water guide holes 83 to 86. . Also with this configuration, the drain water W that has reached the water guide holes 83 to 86 of the end plate 80 </ b> A falls so as to be guided downward using the bent inclined portions formed in the water guide holes 83 to 86. Therefore, the same operation and effect as described above can be obtained.

(Second modification)
The end plate may have the same shape as the condensation fin described in each of the above-described embodiments and modifications. For example, as described above with reference to FIGS. 25 and 26, the end plate (the flat plate portion 80L and the flat plate portion 80N) may have a shape that bends in a V shape downward in the vertical direction. . As described above with reference to FIGS. 27 and 28, the end plate may have a shape that curves in a U-shape downward in the vertical direction.

  As described above with reference to FIG. 29, a part of the upper surface of the end plate (the flat plate portion 80L and the flat plate portion 80N) may be provided with a recess having a shape that is recessed downward. As described above with reference to FIGS. 30 and 31, the outer peripheral edge of the end plate may be provided with an anti-upper portion having a shape that warps upward as it goes to the outside of the end plate. As described above with reference to FIGS. 32 and 33, the outer peripheral edge of the end plate may be provided with an anti-lower portion having a shape that warps downward as it goes to the outside of the end plate.

  As described above with reference to FIG. 34, the end plate may be provided with a through hole different from the water guide holes 83 to 86. As described above with reference to FIG. 38, the outer peripheral edge of the end plate may be provided with a cut portion extending inward. As described above with reference to FIGS. 41 and 42, the outer peripheral edge of the end plate forming the cut portion has a surface shape that curves downward from the upper surface 81 of the end plate toward the inside of the cut portion. You may have.

  As described above with reference to FIGS. 43 to 49, the outer peripheral edge of the end plate has a convex portion that is convex toward the outside of the end plate, and a concave portion that is concave toward the inside of the end plate. However, the uneven | corrugated | grooved part formed by arranging two or more along the circumferential direction may be provided. As described above with reference to FIGS. 50 to 52, the end plate moves from one side of the upper surface and the lower surface of the end plate toward the portion closer to the convex portion from the portion closer to the convex portion than the upper surface of the end plate. And you may form so that it may curve toward the other side of a lower surface.

[Embodiment 7]
With reference to FIGS. 58 and 59, condensing device 20T in the present embodiment will be described. FIG. 58 is a perspective view showing the condensing device 20T. FIG. 59 is an enlarged perspective view showing a region surrounded by the LIX line in FIG. The condensing device 20T includes a dripping sound preventing member 88 that guides the drain water supplied to the surface of the condensing fin 50 into the drain pan 94 while being in contact with the drain water.

  As shown in FIG. 59, the dripping sound preventing member 88 of the present embodiment includes a sandwiching portion 87 and a guide portion 89. The clamping part 87 has a substantially C-shape. The shape of the inner peripheral surface of the sandwiching portion 87 corresponds to the outer shape of the lower curved pipe portion 63 of the refrigerant pipe 60. The guide part 89 is provided in the lower part of the clamping part 87. The guide part 89 has a prismatic shape and extends downward from above in the vertical direction. The dripping sound prevention member 88 is attached to the refrigerant pipe 60 by the clamping part 87 holding the lower curved pipe part 63 of the refrigerant pipe 60. The dripping sound prevention member 88 may be attached to a member other than the refrigerant pipe 60.

  Of the drain water used for cooling the condensing fins 50, the water that has not evaporated reaches the condensing fins 50 located at the bottom. The drain water that has come into contact with the dripping sound prevention member 88 reaches the lower end 89T of the guide part 89 through the surface of the guide part 89. Thereafter, the drain water falls from the lower end 89T of the guide portion 89 toward the surface 94T of the drain pan 94. In the condensing device 20T, the falling distance of the drain water is shortened by the dripping sound preventing member 88, and the dripping sound of the drain water is smaller than that when the dripping sound preventing member 88 is not provided.

  Therefore, according to the condensing device 20T of the present embodiment, it is possible to reduce user discomfort. Since the dripping sound prevention member 88 of the present embodiment can be easily attached to the refrigerant pipe 60 using the clamping portion 87, the burden during assembly is also reduced.

  An interval H3 of about 3 mm to 5 mm may be provided in the vertical direction between the lower end 89T of the dripping sound prevention member 88 and the surface 94T of the drain pan 94. When the dripping sound prevention member 88 is excessively close to the drain pan 94, noise is generated by the resonance of the dripping sound prevention member 88, or the dripping sound prevention member 88 is damaged by the vibration of the dripping sound prevention member 88. Sometimes. Since the lower end 89T of the dripping sound prevention member 88 is separated from the surface 94T of the drain pan 94 within a range of about 3 mm to 5 mm, the drain water can be stably guided into the drain pan 94 while suppressing the generation of dripping sound. It becomes possible.

[Experimental example]
With reference to FIGS. 60 to 62, experimental examples and experimental results performed on the above-described seventh embodiment will be described. In this experimental example, the change in the noise level was measured when the distance H3 between the dripping sound preventing member 88 and the drain pan 94 was changed.

(Experimental example 1)
The vertical axis in FIG. 60 indicates the magnitude of noise generated from the vicinity of the drain pan 94 in a state where the refrigeration cycle operation is stopped and drain water is supplied to the condenser 20T. The horizontal axis in FIG. 60 indicates the distance H3 between the lower end 89T of the dripping sound preventing member 88 and the surface 94T of the drain pan 94.

  As shown by the line LL1, in the state where the refrigeration cycle operation is stopped and the drain water is supplied to the condenser 20T, it can be seen that almost no noise is generated when the interval H3 is in the range of 0 mm to 5 mm. . It can be seen that the noise gradually increases when the interval H3 exceeds 5 mm.

(Experimental example 2)
The vertical axis in FIG. 61 indicates the magnitude of noise generated from the vicinity of the drain pan 94 when the refrigeration cycle operation is performed and drain water is not supplied to the condenser 20T. The horizontal axis in FIG. 61 indicates the distance H3 between the lower end 89T of the dripping sound prevention member 88 and the surface 94T of the drain pan 94.

  As indicated by the line LL2, in the state where the refrigeration cycle operation is performed and the drain water is not supplied to the condensing device 20T, it can be seen that the noise sharply decreases as the interval H3 is increased from 0 mm. It can be seen that noise hardly occurs when the distance H3 exceeds 3 mm.

(Experimental example 3)
The vertical axis in FIG. 62 indicates the magnitude of noise generated from the vicinity of the drain pan 94 in a state where the refrigeration cycle operation is performed and drain water is supplied to the condensing device 20T. The horizontal axis in FIG. 62 indicates the distance H3 between the lower end 89T of the dripping sound prevention member 88 and the surface 94T of the drain pan 94.

  As shown by the line LL3, it can be seen that in the state where the refrigeration cycle operation is performed and drain water is supplied to the condenser 20T, the noise sharply decreases as the interval H3 is increased from 0 mm. It can be seen that noise hardly occurs when the distance H3 is in the range of 3 mm to 5 mm. It can be seen that the noise gradually increases when the interval H3 exceeds 5 mm.

  Therefore, according to the experimental result of this experimental example, it is preferable that a gap H3 of about 3 mm to 5 mm is provided in the vertical direction between the lower end 89T of the dripping sound preventing member 88 and the surface 94T of the drain pan 94. I understand.

[Other variations]
Although each above-mentioned embodiment was described based on a condensation device provided with four condensers 41-44, a condensation device of the present invention may be provided with one of condensers 41-44. In each of the above-described embodiments, the condensing fin is composed of a plate-shaped member having a substantially flat plate shape as a whole, but the condensing fin may be composed of a wire formed in a plate shape. Alternatively, the plate-like member may be formed of a mesh-like member.

  Although each above-mentioned embodiment was described based on the refrigerator-freezer provided with the freezer compartment and the refrigerator compartment, the condensation device of the present invention is not restricted to application to a refrigerator-freezer. The condensing device of the present invention is used in a refrigerator-freezer having only a freezer compartment, a refrigerator-freezer having only a refrigerator compartment, a floor-standing type cooler, a wall-mounted cooler, and an air conditioner having a cooler function. Can also be applied.

  As mentioned above, although each embodiment and each experimental example based on this invention were demonstrated, each disclosed embodiment and each experimental example are illustrations in all points, and are not restrictive. The technical scope of the present invention is defined by the terms of the claims, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

<Appendix>
A part or all of the above-described embodiments and modifications may be described as in the following supplementary notes, but are not limited to the following.

<Appendix 1>
A plurality of condensing fins that are spaced apart from each other in the vertical direction and are arranged so as to face each other in the vertical direction, and includes a condenser in which drain water is supplied to the condensing fins from a drain water supply unit,
The condensed fin is a refrigerant disposed so as to come into contact with the condensed fin while being cooled by the drain water supplied to the surface of the condensed fin from the drain water supply unit and the airflow flowing around the condensed fin. Heat exchange with refrigerant flowing in the pipe,
Condensing device.

<Appendix 2>
It further comprises an end plate arranged to face the condensing fin located at the top from above,
The end plate has water guide holes for guiding the drain water supplied from the drain water supply unit onto the upper surface of the end plate downward.
The condensing device according to appendix 1.

<Appendix 3>
The inner peripheral surface of the end plate that forms the water conduction hole has a surface shape that curves or bends downward from the upper surface of the end plate toward the inside of the water conduction hole.
The condensing device according to appendix 2.

<Appendix 4>
The water conveyance hole is located above a portion near the center of the condensation fin located at the uppermost part.
The condensing device according to appendix 2 or 3.

<Appendix 5>
The drain water supply unit has an outflow part through which the drain water flows out,
The condensing fin located at the uppermost part is arranged so that a portion closer to the center of the condensing fins located at the uppermost part is located below the outflow part,
The condensing device according to appendix 1.

<Appendix 6>
The drain water supply unit has an outflow part through which the drain water flows out,
The condensation fin located at the uppermost part is arranged so that the upstream part in the direction in which the airflow flows among the condensation fins located at the uppermost part is located below the outflow part.
The condensing device according to appendix 1.

<Appendix 7>
It further comprises a drain pan disposed below the condensation fin located at the bottom,
The drain water supplied to the surface of the condensation fin falls into the drain pan together with dust attached to the surface of the condensation fin.
The condensing device according to any one of appendices 1 to 6.

<Appendix 8>
The outer peripheral edge of the condensation fin includes an anti-upper portion having a shape that warps upward as it goes to the outside of the condensation fin.
The condensing device according to any one of appendices 1 to 7.

<Appendix 9>
The anti-upper portion is formed by removing the mold from the lower surface side to the upper surface side of the condensation fin along the outer peripheral edge of the condensation fin when the condensation fin is manufactured.
The condensing device according to appendix 8.

<Appendix 10>
The outer peripheral edge of the condensation fin includes an anti-lower portion having a shape that warps downward as it goes to the outside of the condensation fin.
The condensing device according to any one of appendices 1 to 7.

<Appendix 11>
The anti-lower part is formed by removing the mold from the upper surface side of the condensation fin toward the lower surface side along the outer peripheral edge of the condensation fin when the condensation fin is manufactured.
The condensing device according to appendix 10.

<Appendix 12>
The plurality of condensing fins are arranged to be inclined, and are inclined downward as they go from the upstream side to the downstream side in the direction in which the airflow flows.
The condensing device according to any one of appendices 1 to 11.

<Appendix 13>
The plurality of condensation fins are arranged so as to be inclined, and are inclined so that the inclination directions of the opposing condensation fins are opposite to each other.
The condensing device according to any one of appendices 1 to 11.

<Appendix 14>
A through hole for guiding the drain water supplied on the upper surface of the condensation fin downward is provided in a portion near the center of the condensation fin.
The condensing device according to any one of appendices 1 to 13.

<Appendix 15>
A recess having a shape that is recessed downward is provided on a part of the upper surface of the condensation fin.
The condensing device according to any one of appendices 1 to 14.

<Appendix 16>
The condensation fin has a shape in which the whole condensation fin is curved in a U shape downward, or a shape in which the whole condensation fin is bent in a V shape downward.
The condensing device according to any one of appendices 1 to 14.

<Appendix 17>
The surface of the condensation fin has been subjected to a hydrophilic coating treatment,
The condensing device according to any one of appendices 1 to 16.

<Appendix 18>
The surface of the condensation fin has been subjected to an electrolytic corrosion prevention coating process,
The condensing device according to any one of appendices 1 to 17.

<Appendix 19>
The drain water supply unit is disposed above the condensing fin located at the top, has a half-divided cylindrical shape, and is disposed so as to be inclined downward from above.
The condensing device according to any one of appendices 1 to 18.

<Appendix 20>
The drain water supply unit has a storage unit capable of temporarily storing the drain water before supplying the drain water to the surface of the condensation fin.
The condensing device according to any one of appendices 1 to 19.

<Appendix 21>
The drain water supply unit has a spray unit that atomizes the drain water and sprays it on the surface of the condensation fins.
The condensing device according to any one of appendices 1 to 18.

<Appendix 22>
The outer peripheral edge of the condensation fin includes a cut portion extending toward the inside of the condensation fin.
The condensing device according to any one of appendices 1 to 21.

<Appendix 23>
The innermost part of the cut portion has a sharp shape,
The condensing device according to appendix 22.

<Appendix 24>
The notch has a tapered shape that becomes narrower toward the inside of the condensation fin,
The condensing device according to appendix 22 or 23.

<Appendix 25>
A dripping sound preventing member provided to extend downward from above and guiding the drain water supplied to the surface of the condensing fins into the drain pan while contacting the drain water;
The condensing device according to appendix 7.

<Appendix 26>
The dripping sound preventing member is attached to the refrigerant pipe.
The condensing device according to appendix 25.

<Appendix 27>
The outer peripheral edge of the condensation fin includes an uneven portion formed by arranging a plurality of convex portions that are convex toward the outside of the condensation fin and a concave portion that is concave toward the inside of the condensation fin.
The condensing device according to any one of appendices 1 to 26.

<Appendix 28>
The condensing device according to any one of appendices 1 to 27 is provided,
Freezer refrigerator.

  DESCRIPTION OF SYMBOLS 10 Housing, 11 Freezing room, 11D Freezing room door, 12 Refrigeration room, 12D Refrigerating room door, 13 Cooling air channel, 14 Evaporator, 15 Defrosting device, 16 Drain water piping, 16M Water collection port, 16N Drainage port, 17 Machine room, 18 Intake port, 19 Exhaust port, 20, 20A, 20B, 20C, 20D, 20E, 20F, 20G, 20G1, 20H, 20H1, 20J, 20J1, 20K, 20K1, 20K2, 20L, 20L1, 20M, 20M1, 20M2, 20M3, 20N, 20N1, 20N2, 20N3, 20P, 20Q, 20Q1, 20Q2, 20Q3, 20R, 20S, 20T Condenser, 30, 31, 32, 33, 34, 35 Drain water supply unit, 31M Shape part, 31N hose-like part, 31P, 31Q storage part, 31T, 32T, 33T, 34T, 3 T outlet, 31U spraying part, 41, 42, 43, 44, 45 condenser, 50, 50A, 50B, 50C, 50D, 50E, 50G, 50G1, 50G2, 50G3, 50H, 50H1, 50H2, 50H3, 50J, 50K, 50K1, 50K2, 50K3, 50L Condensing fins, 51, 81 upper surface, 51C, 51D, 80P part, 52, 82 lower surface, 53, 54, 55, 56 outer peripheral edge, 57, 58 insertion hole, 59 through hole, 60 Refrigerant pipe, 61 Straight pipe part, 62 Upper curved pipe part, 63 Lower curved pipe part, 71, 72 Center part, 73 Recessed part, 74M Anti-upper part, 74N Anti-lower part, 75 Notch part, 76 Convex part, 77 Convex part , 78 concave part, 80, 80A end plate, 80L, 80M, 80N flat plate part, 83, 84, 85, 86 water guide hole, 87 clamping part, 88 Dripping prevention member, 89 guide, 89T lower end, 90 blower fan, 92 compressor, 94 drain pan, 94T surface, 100 refrigerator-freezer, 200 dust, 300 drive device, AR10, AR90, DR2, DR3, DR70, X, Y , Z arrows, H1, H2, L1, L2, L3 dimensions, H3, P2 spacing, LL1, LL2, LL3 lines, R2 radius of curvature, W drain water, W2 width, θ2 wedge angle.

Claims (15)

A plurality of condensing fins that are spaced apart from each other in the vertical direction and are arranged so as to face each other in the vertical direction, comprising a condenser in which drain water is supplied to the condensing fins from a drain water supply unit;
The condensing fin is arranged to come into contact with the condensing fin while being cooled by the drain water supplied from the drain water supply unit to the surface of the condensing fin and the airflow flowing around the condensing fin. Heat exchange with refrigerant flowing in the pipe,
Condensing device. Further comprising an end plate disposed so as to face the condensing fin located at the top from above,
The end plate has water guide holes for guiding the drain water supplied on the upper surface of the end plate from the drain water supply unit downward.
The condensing device according to claim 1. The water conveyance hole is located above a portion near the center of the condensation fin located at the uppermost part.
The condensing device according to claim 2. The drain water supply unit has an outflow part for flowing out the drain water,
The condensing fin located at the uppermost part is arranged such that a portion near the center of the condensing fins located at the uppermost part is located below the outflow part,
The condensing device according to claim 1. The drain water supply unit has an outflow part for flowing out the drain water,
The condensing fin located at the uppermost part is arranged such that an upstream part in the direction in which the airflow flows of the condensing fins located at the uppermost part is located below the outflow part.
The condensing device according to claim 1. It further comprises a drain pan disposed below the condensing fin located at the bottom,
The drain water supplied to the surface of the condensation fin falls into the drain pan together with dust attached to the surface of the condensation fin.
The condensing device according to any one of claims 1 to 5. The outer peripheral edge of the condensing fin includes an anti-upper portion having a shape that warps upward as it goes to the outside of the condensing fin.
The condensing device according to any one of claims 1 to 6. The anti-upper portion is formed by pulling a mold from the lower surface side to the upper surface side of the condensation fin along the outer peripheral edge of the condensation fin during the production of the condensation fin.
The condensing device according to claim 7. The outer peripheral edge of the condensing fin includes an anti-lower portion having a shape that warps downward as it goes to the outside of the condensing fin.
The condensing device according to any one of claims 1 to 6. The plurality of condensing fins are arranged to be inclined, and are inclined downward as they go from the upstream side to the downstream side in the direction in which the airflow flows.
The condensing device according to any one of claims 1 to 9. A recess having a shape that is recessed downward is provided on a part of the upper surface of the condensation fin.
The condensing device according to any one of claims 1 to 10. The drain water supply unit is arranged above the condensing fin located at the uppermost part, has a half-divided cylindrical shape, and is arranged so as to be inclined downward from above.
The condensing device according to any one of claims 1 to 11. The drain water supply unit has a storage unit capable of temporarily storing the drain water before supplying the drain water to the surface of the condensation fin.
The condensing device according to any one of claims 1 to 12. The drain water supply unit has a spray unit that atomizes the drain water and sprays it on the surface of the condensation fins.
The condensing device according to any one of claims 1 to 11. The condensing device according to claim 1 is provided.
Freezer refrigerator.