JP2010054063A - Outdoor unit for air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To carry out quick draining of drain water, to prevent freezing of a drain hole, and to positively carry out draining even in a cold district. <P>SOLUTION: The outdoor unit for an air conditioner includes a bottom plate 1 mounted with at least a heat exchanger 2. In the bottom plate, a water conducting passage forming wall 1c is erected in a position in parallel with the heat exchanger, and the drain hole 1b and a downward inclined face 1e continuing to the drain hole are provided in a water conducting passage 1d formed by the water conducting passage forming wall. By this, flowing of the drain water to portions other than a lower part of the heat exchanger is prevented and the bottom plate is reinforced by the water conducting passage forming wall. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an outdoor unit of an air conditioner, and more particularly to improvement of drain water drainage structure.

  When the heating operation is performed in the outdoor unit of the separate type air conditioner, the heat is deprived by the rotation of the fan in the heat exchanger. At this time, since the heat exchanger condenses water vapor in the air, frost is formed on the surface thereof. If the frost grows with time, the frost gets in the way and the ventilation is hindered so that the heat is not transferred. Therefore, heat exchange is not performed and indoor heating may not be possible. Therefore, in general, an outdoor unit performs a defrosting operation for a certain period of time to melt the frost and perform heat exchange. Thereafter, the heating operation and the defrosting operation are repeated.

  During the defrosting operation, the frost on the surface of the heat exchanger is melted and dripped as drain water. Therefore, a drain water drainage groove is conventionally installed at the lower position of the heat exchanger on the bottom plate of the outdoor unit, a horizontal surface is formed at the lowest part of the drainage groove, a drain hole is provided there, and drain water is drained. (For example, refer to Patent Document 1 and Patent Document 2).

Japanese Patent Laying-Open No. 2005-188837 (FIG. 1) Japanese Unexamined Patent Publication No. 2000-213779 (FIGS. 6 and 8)

  In such a case, dripping drain water is drained from the drain hole to the outside through the drain groove, but when the outside air temperature is low in a cold district or the like, on the way to the drain hole, particularly in the horizontal plane around the drain hole. It may freeze and block drain holes and drains. In such a case, the drain water cannot be drained to the outside, and the horizontal surface portion is further expanded by the frozen ice surface, the flow of the drain water becomes worse, and a large amount of water remaining inside is further frozen. It becomes easy. Each time the heating operation and the defrosting operation are repeated many times, they grow further, and the function of the heat exchanger may be incomplete or the inside of the outdoor unit may be damaged.

  The present invention has been made in order to solve the above-mentioned problems. The first object of the present invention is to allow drainage water to be drained quickly and to prevent the drainage drain hole from freezing. The goal is to ensure drainage.

  The second object of the present invention is to increase the strength while improving the workability by reducing the depth of the bottom plate of the outdoor unit.

  An outdoor unit of an air conditioner according to the present invention includes at least a bottom plate on which a heat exchanger is placed, and the bottom plate is formed with a water conduit forming wall standing at a position along the heat exchanger. A drain drainage hole and a downwardly inclined surface that continues to the drain drainage hole are provided in the water conduit formed by the water conduit formation wall.

  According to the outdoor unit of the air conditioner of the present invention, the bottom plate is formed with a water guide passage forming wall at a position along the heat exchanger, and the water guide passage formed by the water guide passage forming wall. Since the drain drain hole and the downward sloping surface that continues to this drain drain hole are provided inside, the drain flow rate does not drop until it reaches the drain drain hole, and the drainage path is concentrated, and the drain drain hole There is no freezing on the way. For this reason, it can prevent blocking | draining a drain drain hole and a water conduit. Further, the water guide path forming wall raised in the upper direction of the bottom plate at a position along the heat exchanger acts as a reinforcing rib of the bottom plate. For this reason, it is possible to increase the strength while improving the workability without increasing the depth direction of the bottom plate.

The present invention will be described below with reference to illustrated embodiments.
FIG. 1 is a perspective view showing a bottom plate of an outdoor unit of an air conditioner according to an embodiment of the present invention, FIG. 2 is a perspective view showing a state in which a heat exchanger and a compressor are mounted on the bottom plate, and FIG. FIG. 4 is a perspective view showing the external appearance of the entire outdoor unit. FIG. 4 is a top view showing a state in which a blower and a partition plate are further mounted on the bottom plate.

  The outdoor unit 100 of the air conditioner of this embodiment has a heat exchanger 2, a compressor 3, a blower 4, and a partition plate 5 mounted on a rectangular steel plate bottom plate 1 as shown in FIGS. These are covered with an outer box formed by the peripheral wall 6 and the top plate 7.

  The bottom plate 1 has a frame (hereinafter referred to as a “peripheral frame”) 1 a surrounding the periphery, and a water guide channel forming wall 1 c is formed upright at a position along the heat exchanger 2. A water conduit 1d is formed by being partitioned by the peripheral frame 1a, and the drain water is prevented from flowing out to the lower part of the heat exchanger 2, that is, other than the water conduit 1d by the water conduit forming wall 1c. In the water conduit 1d, a drain drain hole 1b that is always open for draining drain water to the outside and a downward inclined surface (= water conduit bottom face) 1e that continues to the drain drain hole 1b are provided. The bottom plate 1 as a whole is formed on a downward inclined surface toward the drain drain hole 1b.

  Further, in the water conduit 1d, a plurality of heat exchanger mounting tables 1f are formed at the ends, corners, etc., and the heat exchanger 2 is mounted and fixed on these mounting tables 1f. Yes. The height of the mounting table 1f is lower than the height of the water guide passage forming wall 1c and the peripheral frame 1a that are close to or in contact with. The bottom plate 1 is integrally formed with the peripheral frame 1a, the water conduit forming wall 1c, the inclined surface 1e, and the heat exchanger mounting table 1f by pressing.

  When heating operation is performed in the air conditioner of the present embodiment, the surface of the heat exchanger 2 of the outdoor unit 100 is in a frosted state. In order to melt the frost, a defrosting operation is performed for a certain time. The water melted by this defrosting operation is drained and dripped onto the downward inclined surface 1e that continues to the drain drain hole 1b of the water conduit 1d on the bottom plate 1, and is led to the drain drain hole 1b. Accordingly, the dripped drain water flows at a high speed and concentrates and flows only in the lower part of the heat exchanger 2. For this reason, even if the outside air temperature is low in a cold district or the like, the drain water does not freeze on the water conduit 1d reaching the drain drain hole 1b and can be drained reliably.

  Moreover, since the installation base 1f is formed lower than the height of the adjacent water guide channel forming wall 1c and the peripheral frame 1a, the drain water traveling downward on the outer surface of the heat exchanger 2 is heated. The water is reliably dropped from the lower end of the exchanger 2 into the water conduit 1d.

  As described above, in the outdoor unit of the air conditioner of the present embodiment, a slope inclined downward toward the drain drain hole 1b is provided, and heat exchange is performed so that the drain water does not flow except the lower part of the heat exchanger 2. Since the water flow path forming wall 1c is raised at a position along the vessel 2, the drainage path is concentrated, the drain water flow rate increases, and the drainage water does not freeze on the way to the drain drainage hole 1b. can do. For this reason, it can prevent that the drain drain hole 1b and the water conduit 1d are blocked.

  Further, the water guide passage forming wall 1 c having the rising structure functions as a reinforcing rib of the bottom plate 1. For this reason, it is also possible to increase the strength of the bottom plate 1 while improving the workability of the steel plate press (sheet metal) without increasing the depth direction of the bottom plate 1.

It is a perspective view which shows the bottom plate of the outdoor unit of the air conditioner which concerns on one Embodiment of this invention. It is a perspective view which shows the state which attached the heat exchanger and the compressor on the baseplate of the outdoor unit of the air conditioner which concerns on one Embodiment of this invention. It is a top view which shows the state which attached the air blower and the partition plate further on the bottom plate from the state of FIG. It is a perspective view which shows the external appearance of the whole outdoor unit of the air conditioner which concerns on one Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Bottom plate, 1b Drain drain hole, 1c Water conveyance path formation wall, 1d Water conveyance path, 1e inclined surface, 2 Heat exchanger, 100 Outdoor unit.

Claims (1)

Comprising a bottom plate on which at least a heat exchanger is placed;
In the bottom plate, a water conduit forming wall is raised and formed at a position along the heat exchanger, and a drain drain hole and a drain drain hole are formed in the water conduit formed by the water conduit forming wall. An outdoor unit of an air conditioner, characterized in that a continuous downward inclined surface is provided.

Images