JPS6323209Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field) The present invention relates to an improvement of a cooler unit of an air conditioner for an automobile.

(Technical Background) In general, an air conditioner for an automobile consists of an intake unit 1 and a cooler unit 2, as shown in Fig. 1.
and a heater unit 3. The intake unit 1 has a built-in fan 5 driven by a motor 4, and further includes an inside air circulation port 6 into which the circulation flow into the vehicle interior flows, and an outside air inlet 7 into which outside air flows.
The intake unit 1 is provided with an outflow port 8 through which air from either or both of the inside air circulation port 6 and the outside air inflow port 7 is sent out by the fan 5. Also, intake unit 1
is provided with an intake door 9 that moves between an inside air circulation port 6 and an outside air inlet 7.

A cooler unit 2 into which air from the intake unit 1 flows is formed with an inlet 10 connected to an outlet 8, and an evaporator 11.
is built in, and during operation of the cooling circuit, air from the intake unit 1 is heat exchanged with the refrigerant by the evaporator 11 within the cooler unit 2. The outlet 12 of the cooler unit 2 is connected to the inlet 13 of the heater unit 3, and the air cooled within the cooler unit 2 flows into the heater unit 3.

A heater core 14 is installed in the heater unit 3 to circulate engine cooling water in order to heat the air that has passed through the cooler unit 2. A mixer door 15 is installed in front of the heater core 14.
is attached, and by opening and closing this door 15, the temperature of the air blown into the vehicle interior is adjusted. In other words, all the air that has passed through the cooler unit 2 can be sent into the passenger compartment via the heater core 14, or can be sent directly into the passenger compartment without passing through the heater core 14, or some of the air from the cooler unit 2 can be sent through the heater core 14. Other air is then mixed and sent into the vehicle interior without passing through the heater core.
Alternatively, warm air is sent through the heater core from the lower air outlet without mixing, and cold air is sent from the upper air outlet.

The heater unit 3 includes a differential duct 16 for blowing air along the inner surface of the windshield to remove frost and fog on the windshield, and a floor duct 17 for blowing air to the feet of the front seats of the automobile. A vent duct 18 is provided for sending air to a center ventilator (not shown) assembled in the instrument panel in front of the driver's seat.Furthermore, a vent duct 18 is provided in the heater unit 3 for supplying air to a center ventilator (not shown) assembled in the instrument panel in front of the driver's seat. A floor door 19 for controlling air distribution and a vent door 20 for controlling air distribution to the instrument duct 18 are provided. Further, a bypass passage 21 is formed between the inlet of the instrument duct 18 and the inlet of the floor duct 17.

The cooler unit 2 has a casing 22 in which the evaporator 11 is built.
A slope 23 is formed from the lower side of the cooling unit 1 toward the outlet 12 of the cooler unit 2.
The inner surface of 3 serves as a receiving surface for condensed water generated in the evaporator 11 when it is scattered by the passing wind, and also prevents the condensed water remaining on this surface and in the lower part on the leeward side of the evaporator from rising along the inner surface of the inclined portion 23 due to the wind and scattering into the heater unit 3 through the air outlet.

Further, in order to prevent the condensed water from scattering, a wire mesh 25 for preventing the condensed water from scattering is installed on the air downstream side of the evaporator 11, as shown in FIG.

(Problems with the prior art) However, since the inner surface of the casing 22 of the cooler unit 2 is covered with a heat insulating material 26 made of a material such as styrofoam, it is not possible to prevent condensed water from scattering as described above. However, the wind causes water droplets to rise along the insulation material 26 and scatter from there, and all of the condensed water is not discharged from the discharge hole 27 at the lower end of the sloped part 23, and in some cases, the condensed water may flow into the heater. There was a risk that the liquid might seep into the passenger compartment through the joints of the divided cases of unit 3.

(Object of the invention) An object of the present invention is to provide a cooler unit for an air conditioner for an automobile, which eliminates the drawbacks of the conventional ones described above and can effectively prevent the scattering of condensed water.

(Structure of the invention) The present invention is characterized by providing an inclined guide plate on the air downstream side inclined part of the casing of the cooler unit, which forms a drain passage with the inner surface of the inclined part.
The inclined guide plate is provided with a rib for preventing splashing water extending perpendicularly to the direction of air circulation, and the inclined guide plate is provided with a tongue-shaped portion in the water drop hole.

(Example) Examples according to the present invention will be described below with reference to the drawings.

FIG. 3 is a schematic sectional view of the cooler unit according to the present invention, and FIG. 4 is a view taken along the line A-A in FIG.
The same members as in FIGS. 1 and 2 are given the same reference numerals.

As shown in FIG. 3, an evaporator 11 is provided within a casing 22 of the cooler unit 2. As shown in FIG. An inclined portion 23 is formed in the casing 22 on the air downstream side with respect to the evaporator.
An inclined guide plate 28 is provided on the inner surface of the inclined portion 23, and the inner surface of the inclined portion 23 and the inclined guide plate 28
A drain passage 29 is thus formed. Further, the inclined guide plate 28 is provided with a plurality of splash prevention ribs 30 extending in a direction perpendicular to the direction of air flow, together with a plurality of holes 31 for water falling.

The inclined guide plate 28 is made of a heat insulating material and is formed separately from the casing 22, and is fixed to the inner surface of the casing 22.

Further, in the present invention, as shown in FIG. 5, the inclined guide plate 28 is provided with a tongue-shaped portion 33 that extends from the inside of the water drop hole 31 provided therein to the upper surface of the inclined portion 23. ing. Each tongue 3
3 collects condensed water that has fallen onto the top surface of the inclined guide plate 28,
It is quickly guided to the upper surface of the inclined portion 23.

Next, the action will be explained.

Condensed water generated in the evaporator 11 due to heat exchange with the air is scattered by the wind passing through the evaporator and adheres to the inclined guide plate 28 and the splash-up prevention rib 30. Next, in FIG. 5, the wind flow in the vicinity of the inclined guide plate 28 from the left side to the right side is caused by the water blow-up prevention rib 30.
The condensed water 32 adhering to the inclined guide plate 28 is allowed to fall into the drain passage 29 from the water drop hole 31 provided in the inclined guide plate 28 by interaction with gravity without further scattering. The condensed water 32 that has fallen into the drain passage 29 moves downward along the slope 23 due to the action of gravity, and is promptly discharged from the discharge hole 27 at the lower end of the slope 23 .

And, in the falling water hole 31 of the inclined guide plate 28,
Since the tongue-shaped part 33 as shown in FIG. 5 is provided, the condensed water 32 falling from the dripping hole 31 is guided by the tongue-shaped part 33 and falls into the water.
Improves drainage.

Further, the material of the inclined guide plate 28 is not a hydrophilic material such as a heat insulating material, but a non-hydrophilic material such as metal or synthetic resin may be used. In that case, since condensed water is not absorbed by the inclined guide plate 28, drainage performance is particularly improved. Furthermore, if the surface of a metal or the like is treated with hydrophilic treatment, the water will not form into droplets and will spread over the surface, so it will not be affected by the wind and water will be less likely to fly away.

(Effects of the invention) As described above, according to the invention, an inclined guide plate that forms a drain passage with the inner surface of the inclined part is provided on the air downstream side inclined part of the casing of the cooler unit. By forming a rib on the plate to prevent water from blowing up and extending in a direction perpendicular to the direction of air circulation, and providing a tongue-like part in the hole for water falling on the inclined guide plate, water may be generated in the evaporator in the cooler unit. The condensed water scattered from the evaporator is reliably caught by the inclined guide plate and promptly discharged outside the unit, resulting in an excellent effect of preventing condensed water from entering the vehicle interior. .

[Brief explanation of the drawing]

Fig. 1 is a schematic sectional view of a general automobile air conditioner, Fig. 2 is a schematic sectional view of a conventional cooler unit, Fig. 3 is a schematic sectional view of a cooler unit according to the present invention, and Fig. 4 is a schematic sectional view of a conventional cooler unit. 3 is a sectional view taken along the line A-A, and FIG. 5 is a detailed view of the main part of FIG. 3. 2... Cooler unit, 11... Evaporator, 22... Casing, 23... Inclined part, 28
... Inclined guide plate, 29 ... Drain passage, 30 ...
Rib to prevent splashing water, 31... Hole for falling water, 33
...tongue.

Claims (1)

[Claims for Utility Model Registration] 1. For automobiles having an evaporator that cools the air by exchanging heat with the air sucked in from the intake unit, and in which the casing of the cooler unit on the downstream side of the air with respect to the evaporator has an inclined part. In the cooler unit of an air conditioner,
An inclined guide plate forming a drain passage with the inner surface of the inclined part is provided on the air downstream side inclined part of the casing of the cooler unit, and the inclined guide plate has a droplet extending in a direction perpendicular to the air flow direction. 1. A cooler unit for an air conditioner for an automobile, characterized in that a rib for preventing water from blowing up is formed, and a tongue-like portion is provided in the water drop hole in the inclined guide plate. 2. A cooler unit for an air conditioner for an automobile according to claim 1, wherein the inclined guide plate is formed separately from a casing of the cooler unit using a heat insulating material. 3. Utility model registration claim 1, characterized in that the inclined guide plate is formed of a non-hydrophilic material separately from the casing of the cooler unit.
A cooler unit for an automotive air conditioner as described in 2.