KR20000047798A - The structure of drain for air-conditioner - Google Patents

Abstract

PURPOSE: A drain structure of an air conditioner is provided to discharge water generated by the frosting of an evaporator via a frustum and a water drain hole formed in an air conditioner mounting die while preventing leakage of water by interposing a ring shaped sealing element between the frustum and the water drain hole. CONSTITUTION: A drain structure of an air conditioner includes an air conditioner unit having an evaporator mounted at an air suction hole in a case, and an air suction fan mounted below the evaporator, wherein the case is formed with an opening part at a bottom part(5a), and at least one frustum(12) is attached under the bottom part, connected with a cylindrical case(22) surrounding the opening, and mounted with a water drain passage formed with a valve element for preventing air suction and communicated with the drain fan of the evaporator, and a mounting die(11) for supporting the air conditioner unit formed with a water drain hole(13) and mounted with an external water drain passage(25), so that the frustum of the casing of the air conditioner is located at a position facing the water drain hole of the mounting die via a ring shaped sealing element(20).

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 base 11. FIG.

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

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

For this reason, a space | interval generate | occur | produces between the lower end part of the drain hose 9, and the upper surface of the pedestal 11, and the water flowed out from the drain hose 9 does not fall all to the water drain hole 13, but is pedestal 11 There is a risk of scattering on the upper surface of).

In particular, the construction machine may be operated on a slope, in which case the holder 11 is inclined with respect to the horizontal, there is a fear that water discharged from the drain hose 9 is scattered on the upper surface of the holder (11). .

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 Pipe

10: driver's seat 11: stand

12: leg 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 said case 5, and the base 12 of the case 5 which comprised the said opening with the cylindrical case 22 in the back side of the bottom wall was formed in at least 1 place or more. At the same time, a water drain passage communicating with the evaporator drain fan 8 in the air conditioner unit 14 is provided inside each stand 12 of the case 5. Structure.

According to the first 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 passes through the water drain passage 12. ), The water flows into the water drain hole (13) by attaching the case (5) in contact with the circumferential edge of the water drain hole (13) of the holder (11). Drained from

In addition, even if water flowing from the water drain passage into the interior of the legs 12 scatters on the upper surface of the holder 11, the scattered water does not flow outside of the legs 12, and the legs 12 are separated from the water drain passages. The water which flowed into the inside of the drain does not flow along the upper surface of the holder 11 and is drained from the water drain hole 13.

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

In the first invention, in the first invention, the water drain hole 13 and the external drain passage 25 are provided in the holder 11 of the air conditioner unit 4, and the water drain formed in the holder 11 is provided. It is a drain structure of the air-conditioning apparatus characterized by having installed the leg 12 of the case 5 which has the said water drain channel | path facing the hole 13, and was installed.

4th invention WHEREIN: In the 3rd invention, the ring-shaped sealing material 20 was provided in the cylindrical contact surface with the holder 11 of the base 12 of the case 5, The drain structure of the air-conditioner apparatus characterized by the above-mentioned. to be.

According to the fourth invention, since the space between the base 12 and the holder 11 is watertight with the sealing material 20, the water flowing inside the base 12 is surely flowing out of the base 12. It can prevent.

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 base 12 has a cylindrical shape having a diameter larger than that of the water drain hole 13 and is attached to the bottom wall 5a of the case 5. The ring-shaped sealing material 20 is attached to the lower edge of the opening 12 (cylindrical contact surface with the mounting table 11), and the sealing material 20 has a water drain hole at the upper surface of the mounting table 11 ( 13) is pressed against the periphery of the circumferential edge portion to seal the inside and outside of the stand 12.

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

The drain hose 9 penetrates into the case 22 to protrude into the cylindrical corner 12, and the lower end of the drain hose 9 is spaced apart from the upper surface of the holder 11.

As such, the case 5 is moved from the transverse direction along the cradle 11 between the driver's seat 10 and the cradle 11 so that the bag 12 is brought into contact with the circumferential edge of the water drain hole 13. By attaching the unit 4 to the holder 11, the drain hose 9 faces the water drain hole 13.

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 holder 11, the scattered water is stored in the inside of the base 12, and since it does not flow out to the outside of the base 12, water drain Drained from the hole 13.

In addition, since the sealing member 20 is watertight between the base 12 and the holder 11, water can be reliably prevented from leaking to the outside of the base 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 is substantially eight-sided in cross section, which is sequentially separated from the cylindrical portion 30 side toward the tip portion, and the tip opening portion 34 of the flat portion 31 is wide. It is a straight line and is normally a small opening width or is closed.

The said normal 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, a pair of 1st wall 32 of the flat part 31 expands and elastically deforms, and the opening width of the front end opening 34 becomes large, and water flows out smoothly. .

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 drained from the drain pipe 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 communicate the inside of the Everposer drain pan 8 and the base 12 with 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 into the inside of the stand 12 through the inside of the stand 12, the water flowing into the inside of the stand 12 is attached by attaching the case 5 to the peripheral edge of the water drain hole 13 of the holder 11. It is drained from the water drain hole 13. In addition, even if water flowing from the water drain passage into the interior of the legs 12 scatters on the upper surface of the holder 11, the scattered water does not flow outside of the legs 12, and the legs 12 are separated from the water drain passages. The water which flowed into the inside of the drain does not flow along the upper surface of the holder 11 and is drained from the water drain hole 13. In this way, in the state where the air conditioner unit 4 is attached between the driver's seat 10 and the holder 11 of the construction machine, the water droplets generated by condensation on the abutment 6 of the air conditioner unit 4 are mounted on the holder ( It is possible to drain outward from the water drain hole 13 of 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.

According to the present invention, since the space between the base 12 and the holder 11 is watertight with the sealing material 20, the water flowing inside the base 12 is surely prevented from flowing out of the base 12. Can be.

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 said case 5, and the base 12 of the case 5 which comprised the said opening with the cylindrical case 22 in the back side of the bottom wall was formed in at least 1 place or more. At the same time, the water drain passage communicating with the evaporator drain fan 8 in the air conditioner unit 4 is provided in the inside of each stand 12 of the case 5. rescue. 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. A water drain hole (13) and an external drain passage (25) are provided in the holder (11) of the air conditioner unit (4), and in the water drain hole (13) formed in the holder (11). Oppositely, each structure 12 of the case 5 which has the said water drain channel | path was located and provided, The drain structure of the air-conditioning apparatus characterized by the above-mentioned. The drain structure of the air-conditioning device according to claim 3, wherein a ring-shaped sealing material (20) is provided on a cylindrical contact surface with the holder (11) of each stand (12) of the case (5).