JP4999809B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner, and more particularly, to an air conditioner including a drain water blowing prevention structure that prevents water blowing up against a reverse wind from a drain hole that discharges drain water.

  In the conventional air conditioner drain water blow prevention structure, a drain splash prevention fitting is installed around the drain pan drain to prevent water splash due to the reverse flow of drain water generated by air suction into the drain pipe. This eliminates the need for installing a drain trap on site, and prevents water leakage due to the occurrence of water splash (see, for example, Patent Document 1).

  In addition, in a drain water treatment device of a conventional air conditioner, the drain outlet is separated into a drainage path and an air path by a partition, the drain drain is provided in the vertical direction, and the partition is provided at the end face of the drain outlet. By making it protrude more, there exists what prevented the formation of the water film in the end surface of a drain drainage port, or the back flow of drain water to an air path (for example, refer to patent documents 2).

Japanese Patent Laid-Open No. 2-89931 (page 3, FIG. 1) Japanese Patent Laid-Open No. 2002-168474 (5th page, FIG. 1)

  According to the technique described in Patent Document 1, since the drain water inflow port and the drain water discharge port that has flowed back are located at the same opening, the drain water sometimes jumps out of the drain pan due to the reverse flow.

  Moreover, according to the technique described in Patent Document 2, since the drain outlet is separated into the drainage path and the air path by the partition portion, a space for securing each path is required.

  The present invention has been made to solve the above-described problems, and provides an air conditioner having a drain water blowing prevention structure that does not allow the back-flowed drain water to jump out of the drain pan in a small space. The purpose is to do.

The air conditioner having the drain water blow-up preventing structure according to the present invention includes a blower and a heat exchanger, and has heat exchanger fixing parts for fixing the heat exchanger to the main body side on both sides of the heat exchanger, A drain pan that receives drain water at a lower portion of the heat exchanger and discharges the drain water to an outside through a drain hole extending obliquely downward on the back side, and an upper portion of the drain pan at a lower portion of the heat exchanger fixing component A backflow prevention wall that collides with the backflowing drain water is provided, the front side of the backflow prevention wall is formed in a convex shape that protrudes upward, a drain water outlet is provided in the convex portion , and the drain A drain water prevention wall is provided on the front side of the water outlet, and drain water flowing backward from the drain hole of the drain pan is applied to the back flow prevention wall and the drain water prevention wall and collected in the drain pan. .

  According to the air conditioner of the present invention, the reverse flow of drain water generated by sucking air from the drain hole is guided to the drain water blowing-up preventing structure through a path different from the normal path through which the drain water flows toward the drain hole. As a result, drain water can be prevented from jumping out of the drain pan in a small space.

  1 is a longitudinal sectional view of an air conditioner according to an embodiment of the present invention, FIG. 2 is a perspective view showing a drain water drainage path of FIG. 1, and FIG. 3 is a heat exchange with the drain water drainage path of FIG. 4 is a perspective view showing a state in which the heat exchanger fixing part of FIG. 3 is removed, FIG. 5 is a perspective view showing a lower inner surface of the heat exchanger fixing part, and FIG. FIG. 4 is a cross-sectional view of the main part of FIG. 3.

  In the figure, the air conditioner has a detachable front panel 2 on the front side of the main body 1, and an air inlet 3 is provided at the top. In the main body 1, a heat exchanger 4 for exchanging heat from the air sucked from the suction port 3 and a fan (blower) 5 for sucking outside air from the suction port 3 are disposed. Is provided with an air outlet 6 opening on the front side (left side in the figure), and an air passage is formed between them.

  A drain pan 7 that receives drain water from the heat exchanger 4 is disposed below the heat exchanger 4. The drain water in the drain pan 7 is placed outside the main body on the left and right sides (both sides in the width direction) of the drain pan 7. A drain hole 8 for discharging is provided. The drain hole 8 is formed in a socket shape and extends obliquely downward on the back of the unit (see FIG. 6), and a drain hose 9 is attached to the end thereof.

  Both sides of the heat exchanger 4 are fixed to the main body 1 by heat exchanger fixing parts 10, and the heat exchanger fixing parts 10 are attached to the main body 1 at the lower part of the heat exchanger fixing parts 10. Sometimes, a backflow prevention wall 11 that constitutes a drain water blowup prevention structure that covers the top of the drain pan is provided.

  The backflow prevention wall 11 is formed in a convex shape with the front side (left side in FIG. 6) protruding upward, and the drainage hole 8 of the backflow prevention wall 11 is substantially on the extended line (indicated by arrow B). A water outlet 12 is provided, a drain water prevention wall 13 is provided on the front side of the water by a vertical wall, and a drain water channel is formed at a lower part thereof. A drain water guide 15 is provided at the lower end of the drain water prevention wall 13 and is located in the drain pan 7 (FIG. 5).

The operation of the air conditioner configured as described above will be described.
In FIG. 1, in the cooling operation, warm air is sucked into the main body from the suction port 3 by the fan 5, is heat-exchanged by the heat exchanger 4 to become cold air, and is blown out from the air outlet 6 as cold air.
When warm air is heat-exchanged by the heat exchanger 4, moisture in the air is extracted to become drain water, which is dripped onto the drain pan 7. This drain water flows along the bottom surface of the drain pan 7 in the direction of the arrow A in FIG.

  When air is sucked from the drain hole 8, a reverse flow of the drain water may occur. At this time, the drain water is obliquely upward (arrow B) toward the front side of FIG. 6, which is a direction different from the normal path A flowing toward the drain hole 8, that is, the direction of drainage flowing through the drain hole 8. And a part of them hits the backflow prevention wall 11 and falls into the drain pan, a part blows out from the drain water outlet 12 and collides with the drain water prevention wall 13 and flows down, and the water channel 14 or drain water guide. 15 is collected in the drain pan 7 and discharged to the outside.

  According to the present embodiment, a part of the drain water flowing backward from the drain hole 8 hits the backflow prevention wall 11 and falls to the drain pan 7, and a part of the drain water blown out from the drain water outlet 12 is the drain water prevention wall. 13 is prevented from being blown out to the outside and is collected in the drain pan 7, so that the drain water flowing back in a small space does not jump out of the drain pan 7 and can be reliably collected in the drain pan 7. it can.

It is a longitudinal cross-sectional view of the air conditioner which concerns on one embodiment of this invention. It is a perspective view which shows the drainage path | route of the drain water of FIG. It is a perspective view which shows the state which attached the heat exchanger fixing component to the drainage path of the drain water of FIG. It is a perspective view which shows the state which removed the heat exchanger fixing component of FIG. It is a perspective view which shows the lower inner surface side of a heat exchanger fixing component. It is sectional drawing of the principal part of FIG.

Explanation of symbols

  4 Heat exchanger, 5 Blower, 7 Drain pan, 8 Drain hole, 10 Heat exchanger fixing parts, 11 Backflow prevention wall, 12 Drain water outlet, 13 Drain water prevention wall, 14 Waterway, 15 Drain water guide, Idren water Regular route, b Backflow drain water route.

Claims (1)

With a blower and heat exchanger,
A drain hole that has heat exchanger fixing parts for fixing the heat exchanger to the main body side on both sides of the heat exchanger, receives drain water at the lower part of the heat exchanger, and extends obliquely downward on the back side A drain pan for discharging the drain water to the outside,
A reverse flow prevention wall that covers the upper part of the drain pan and collides with the reverse drain water is provided at the lower part of the heat exchanger fixing part, and the front side of the reverse flow prevention wall is formed in a convex shape that protrudes upward. A drain water outlet is provided in the formed portion, and a drain water prevention wall is provided on the front side of the drain water outlet, so that the drain water flowing backward from the drain hole of the drain pan can be used as the back flow prevention wall and the drain water prevention. An air conditioner that is collected on a drain pan against a wall.

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