KR100347979B1 - The structure of drain for air-conditioner - Google Patents

Abstract

The present invention is intended to reliably drain the water flowing out of the drain hose from the water drain hole.

As a solution to this, the present invention makes the legrest (脚 臺) 12 of the case 5 into a cylindrical shape, and projects the drain hose 9 into the inside of the legrest 12. The leg support 12 is placed on the circumferential edge of the water drain hole 13 of the fixed support 11, and the water flowing out of the drain hose 9 does not flow out of the leg support 12 even if splashed. It is to be surely drained from the water drain hole (13).

Description

Drain structure of the air conditioner unit {THE STRUCTURE OF DRAIN FOR AIR-CONDITIONER}

The present invention relates to a drain structure for discharging water droplets generated by condensation in an air conditioner unit of an air conditioner device mounted on a construction machine.

As shown in FIG. 6, a compressor 1, a condenser 2, a receiver dryer 3, and an air conditioner unit 4 are provided, and the air conditioner unit 4 is provided at the air inlet 5b in the case 5. The evaporator 6 is provided, and the air suction fan 7 is provided downstream of the evaporator 6.

The cooling principle of the air conditioner described above is as follows.

The refrigerant, which has become a high temperature and high pressure gas in the compressor 1, enters the condenser 2, and is cooled by outside air to become a liquid. This liquefied refrigerant takes out impurities and moisture by the receiver drier 3 and is filtered to reach the evaporator 6.

Here, the liquid refrigerant is discharged into the unit in the form of a hearth, and the heat of vaporization is taken out by the indoor air sucked into the unit by the air suction fan 7 to become a gas.

The indoor air deprived of the heat of vaporization becomes cold air and is released into the room by the duct and is refrigerant.

In the air conditioner described above, water droplets are generated due to condensation on the outer surface of the evaporator 6, so it is necessary to drain the water droplets from the case 5.

Thus, conventionally, as shown in FIG. 7, an Everposer drain pan (drain) 8 is provided below the Everposer 6, and the drain hose 9 is attached to the Everposer drain pan 8. Connect. The drain hose 9 protrudes from the lower part of the case 5, and the above-mentioned water droplet is drained to the exterior of the case 5. As shown in FIG.

In a construction machine, as shown in FIG. 7, the air conditioner unit 4 may be attached to the space part between the lower part of the driver's seat 10 and the fixed base 11. As shown in FIG.

For example, the leg support 12 provided in the lower part of the case 5 is moved laterally along the upper surface of the fixed support 11, and the drain hose 9 is opposed to the water drain hole 13 of the fixed support 11. Attach it. In FIG. 7, reference numeral 14 denotes an outlet of the cooling wind.

That is, since the air conditioner unit 4 cannot be placed on the fixed base 11 from above because of the driver's seat 10, it is moved and attached laterally along the upper surface of the fixed base 11 as mentioned above.

For this reason, a space | interval arises between the lower end part of the drain hose 9 and the upper surface of the fixed base 11, and the water which flowed out from the drain hose 9 does not fall to the water drain hole 13, but is fixed. There is a fear of scattering on the upper surface of (11).

In particular, the construction machine may operate on a slope, in which case the fixed base 11 is inclined with respect to the horizontal, so that water flowing out of the drain hose 9 may scatter on the upper surface of the fixed base 11. There is.

Therefore, an object of the present invention is to provide a drain structure of an air conditioner device capable of solving the above-described problems.

BRIEF DESCRIPTION OF THE DRAWINGS The front view of the air conditioning unit attachment part which shows embodiment of this invention.

2 is a cross-sectional view taken along the line A-A of FIG.

3 is a perspective view of the drain hose.

4 is a cross-sectional view taken along line B-B in FIG. 3.

5 is a cross-sectional view taken along line C-C of FIG.

6 is an explanatory diagram of an air conditioner device.

7 is a front view of an attachment portion of a conventional air conditioner unit.

Explanation of symbols on the main parts of the drawings

1: compressor 2: condenser

3: receiver dryer 4: air conditioning unit

5: case 5a: bottom wall

6: evaporator 7: air intake fan

8: Evaporator Drain Pan 9: Drain Hose

10: driver's seat 11: fixed base

12: legrest 13: water drain hole

20: sealing material 30: cylindrical part

31: flat part 32: first wall

33: second wall 34: tip opening

According to a first aspect of the invention, an air conditioner unit (4) is provided in which an air inlet (6) is provided at an air inlet in a case (5), and an air intake fan (7) is provided downstream of the evaporator (6). ,

An opening is formed in the bottom wall 5a of the case 5, and at least one leg support 12 of the case 5 is formed by enclosing the opening with a cylindrical cylindrical portion 22 on the back side of the bottom wall. In addition to the above, an air-conditioner characterized in that a water drain passage communicating with the evaporator drain fan 8 in the air-conditioning unit 14 is provided inside the leg support 12 of the case 5. The drain structure of the device.

According to the first invention, the water droplets generated by condensation on the evaporator 6 are stored in the evaporator drain pan 8, and the water stored in the evaporator drain pan 8 passes through the water drain passage. 12 flows into the interior of the footrest 12 by attaching the legrest 12 to the case 5 in contact with the periphery of the water drain hole 13 of the fixed leg 11 so that the water flowing into the legrest 12 It is drained from the drain hole 13.

In addition, even if water flowing from the water drain passage into the inside of the leg support 12 scatters on the upper surface of the fixed support 11, the scattered water does not flow out of the leg support 12, but the leg is separated from the water drain passage. The water flowing into the base 12 is drained from the water drain hole 13 without flowing along the upper surface of the fixed base 11.

In this way, in the state where the air conditioner unit 4 is attached between the driver's seat 10 and the fixed base 11 of the construction machine, water droplets generated by condensation on the abutment 6 of the air conditioner unit 4 are stored. It is possible to drain to the outside from the water drain hole 13 of the fixed base 11.

According to a second aspect of the present invention, in the first aspect of the present invention, the water drain passage is a water drain passage including an air intake prevention valve means for preventing intake of air.

According to the second invention, since the air outside the case 5 is not sucked into the case 5 through the water drain passage by the suction force of the air suction fan 7, it is possible to prevent backflow of the water to be discharged. ), There is no retention of water and the freezing can be prevented.

3rd invention provided the water drain hole 13 and the external drain passage 25 in the fixed base 11 of the said air-conditioner unit 4, and formed in the fixed base 11 in 1st invention. It is a drain structure of the air-conditioning apparatus characterized by having installed the leg support 12 of the case 5 which has the said water drain channel | path facing the water drain hole 13, and installed it.

According to a fourth aspect of the present invention, in the third invention, a ring-shaped sealing material (20) is provided on a cylindrical contact surface with the fixed support (11) of the leg support (12) of the case (5). Is the drain structure.

According to the fourth invention, since the water between the legrest 12 and the fixed support 11 is sealed with the sealing material 20, the water flowing inside the legrest 12 causes the It can surely prevent the flow to the outside.

Embodiment of the invention

Embodiment of this invention is described based on drawing. And the same member as before is made the same code | symbol.

As shown in FIG. 1 and FIG. 2, the legrest 12 is cylindrical in diameter larger than the water drain hole 13, and is attached to the bottom wall 5a of the case 5. As shown in FIG. A ring-shaped sealing material 20 is attached to the lower end edge of the leg support 12 (cylindrical contact surface with the fixed support 11), and the sealing material 20 is formed on the upper surface of the fixed support 11. The inner and outer sides of the legrest 12 are watertightly pressed against the peripheral edge portion of the water drain hole 13.

The opening 21 opened in the inside of the legrest 12 is formed in the bottom wall 5a of the said case 5. The opening 21 is fitted with an annular groove 23 formed in the lower outer circumferential surface of the cylindrical cylindrical portion 22 made of an elastic body such as rubber, and the upper portion of the cylindrical portion 22 is fitted with a case 5. Protrude into).

The drain hose 9 penetrates the inside of the cylindrical part 22 and protrudes into the cylindrical leg support 12, and the lower end part of the drain hose 9 is spaced apart from the upper surface of the fixed base 11.

As such, the case 5 is moved from the transverse direction along the fixed base 11 between the driver's seat 10 and the fixed base 11 to move the legrest 12 to the circumferential edge of the water drain hole 13. The drain hose 9 faces the water drain hole 13 by attaching the air conditioner unit 4 to the fixed base 11 in contact with the portion.

Water flowing out of the drain hose 9 is drained from the water drain hole 13 via an external drain passage 25 such as a drain box 24, a drain pipe, and the like shown in FIG. 2 in an imaginary line.

Moreover, even if the water which flowed out from the drain hose 9 scatters on the fixed base 11, the scattered water is stored in the inside of the footrest 12, and since it does not flow out of the outside of the footrest 12, The water is drained from the water drain hole 13.

In addition, since the sealing member 20 is watertight between the legrest 12 and the fixed leg 11, water can be reliably prevented from flowing out of the legrest 12.

The said drain hose 9 is equipped with the cylindrical part 30 and the flat part 31 continuous with this cylindrical part 30, as shown to FIG. 3, FIG. 4, and FIG. The opposing pair of first walls 32 of the flat portion 31 are substantially V-shaped, sequentially approaching toward the leading end from the cylindrical portion 30 side, and the leading end 32a abuts. The opposing pair of second walls 33 of the flat portion 31 has an approximately ovoid cross section sequentially separated from the cylindrical portion 30 side toward the tip portion, and the tip opening portion 34 of the flat portion 31 is It is a wide linear shape and is normally a small opening width or closed.

The cylindrical part 30 and the flat part 31 are elastic bodies, such as rubber | gum, and when the air flows in the arrow a direction in FIG. 4, the front end opening part 34 will close completely. In FIG. 4, when air and water flow in the direction of arrow b, the pair of first walls 32 of the flat portion 31 expand and open elastically so that the opening width of the tip opening portion 34 becomes large so that water flows out smoothly. have.

That is, the flat part 31 forms the air suction prevention valve means which water flows out but does not suck air.

The tubular portion 30 and the flat portion 31 may be separate bodies, and the tubular portion 30 may be a pipe such as resin having rigidity, and the flat portion 31 may be an elastic body. In addition, an air intake preventing valve means may be provided separately from the drain hose 9.

Thus, in the air conditioner unit 4 in which the air suction fan 7 is arrange | positioned downstream of the evaporator 6, air is discharged from the drain hose 9 by the suction force of the air suction fan 7 ( 5) Since there is no inhalation in the water, the back flow of the water to be discharged can be prevented, and there is no water retention in the case 5, and the freezing can be prevented.

Instead of the drain hose 9, a drain pipe may be used to provide an air intake preventing valve means in the drain pipe. That is, what is necessary is just to connect the inside of the evaporator drain pan 8 and the leg support 12 to a water drain passage, and to provide an air suction prevention valve means in the water drain passage.

As described above, according to the present invention, water droplets generated by condensation on the evaporator 6 are stored in the evaporator drain pan 8, and the water stored in the evaporator drain pan 8 is a water drain passage. Since it flows through the interior of the legrest 12, the interior of the legrest 12 is attached to the case 5 by contacting the legrest 12 with the circumferential edge of the water drain hole 13 of the fixed base 11. The water which flowed into is drained from the water drain hole 13. In addition, even if water flowing from the water drain passage into the inside of the leg support 12 scatters on the upper surface of the fixed support 11, the scattered water does not flow out of the leg support 12, but the leg is separated from the water drain passage. The water flowing into the base 12 is drained from the water drain hole 13 without flowing along the upper surface of the fixed base 11. In this way, in the state where the air conditioner unit 4 is attached between the driver's seat 10 and the fixed base 11 of the construction machine, water droplets generated by condensation on the abutment 6 of the air conditioner unit 4 are stored. It is possible to drain to the outside from the water drain hole 13 of the fixed base 11.

Further, according to the present invention, since the air outside the case 5 is not sucked into the case 5 through the water drain passage by the suction force of the air suction fan 7, it is possible to prevent backflow of water to be discharged. 5) There is no retention of water in it, and freezing can be prevented.

Further, according to the present invention, since the water between the legrest 12 and the fixed foot 11 is sealed with the sealing material 20, water flowing inside the footrest 12 is moved to the outside of the footrest 12. It can surely prevent the flow.

Claims (4)

An air conditioner unit 4 is provided with an air inlet 6 in the air inlet of the case 5, and an air intake fan 7 is provided downstream of the evaporator 6, An opening is formed in the bottom wall 5a of the case 5, and at least one leg support 12 of the case 5 is formed by enclosing the opening with a cylindrical cylindrical portion 22 on the back side of the bottom wall. In addition to the above, an air-conditioner characterized by providing a water drain passage in communication with the evaporator drain fan 8 in the air-conditioning unit 4 inside the legrest 12 of the case 5. The drain structure of the device. The drain structure of the air conditioner according to claim 1, wherein the water drain passage is a water drain passage provided with an air intake prevention valve means for preventing intake of air. The water drain hole 13 according to claim 1, wherein a water drain hole 13 and an external drain passage 25 are provided in the fixed support 11 of the air conditioner unit 4, and formed in the fixed support 11. And a leg rest (12) of the case (5) having the water drain passage. 4. The drain structure of an air conditioner device according to claim 3, wherein a ring-shaped sealing material (20) is provided on a cylindrical contact surface of the leg rest (12) of the case (5) with the fixed support (11).