JP3332755B2 - Vehicle air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air conditioner suitable for a passenger car.

[0002]

2. Description of the Related Art The present applicant has filed a patent application for a vehicle air conditioner shown in FIGS. 2 to 4 with Japanese Patent Application No. 7-310726. FIG. 2 is a sectional view taken along line AA in FIG.
FIG. 3 is a sectional view taken along line BB of FIG. 2, and FIG. 4 is a perspective view of a blowout mode switching damper.

An evaporator 4, an air mix damper 6, a heater 5, and a blowing mode switching damper 10 are provided inside a casing 1 embedded in a center console.

[0004] The evaporator 4 is mounted horizontally below the casing 1. The air mix damper 6 is slidably guided by a guide 26 and is disposed above the evaporator 4. The heater 5 is disposed above the air mix damper 6 so as to be deviated to one side in the casing 1 and slightly inclined. The blowing mode switching damper 10 is disposed in the air mixing area above the heater 5 so as to be rotatable around a horizontal axis.

As shown in FIG. 4, the damper 10 has a hollow barrel shape as a whole, and its cylindrical portion 10a is provided with a defrost outlet 12, a face outlet 13 and an air mixing damper at predetermined intervals in the circumferential direction. An inlet 11 communicating with the region is formed, and a fan-shaped foot outlet 14 is formed in each of the end plates 10b and 10c, and a rotary shaft 15 is protrudingly provided at a central portion thereof. The rotating shaft 15 is supported on the left and right side walls 1b and 1c of the casing 1.

The protrusions 16a, 16 formed on the casing 1
b and 16c form a seal portion by approaching the outer peripheral surface of the cylindrical portion 10a at a predetermined interval in the circumferential direction.
The face outlet 2 is formed on the upper surface 1a of the casing 1 so as to be located between the protrusions 16a and 16b.
The defrost outlet 3 is formed so as to be located between the casing 1 and 16c, and a foot outlet 19 which can be aligned with the foot outlet 14 is formed on each of the left and right side walls 1b and 1c of the casing 1.

A face duct 21 is connected to the face outlet 2, a defrost duct 22 is connected to the defrost outlet 3, and a foot duct 23 is connected to the foot outlet 19.

During operation of the air conditioner, the air inside the vehicle or the outside air urged by a blower incorporated in a blower case (not shown) flows from the suction port 25 to the casing 1.
It flows horizontally into the inner lower part and is cooled by exchanging heat with the refrigerant in the process of flowing through the evaporator 4.

This air is diverted by the air mix damper 6, and the air that has flowed through the heater passage 28 formed on one side of the air mix damper 6 enters the heater 5 where it exchanges heat with engine cooling water for heating. After that, the air that flows through the bypass passage 27 formed on the other side of the air mix damper 6 is mixed and mixed in the air mix area to become conditioned air of a predetermined temperature.

This conditioned air enters the interior of the damper 10 through the inlet 11 and is rotated by rotating the damper 10 about the rotation axis 15 from any one of the outlets 2, 3, and 19 selected. Be blown out.

That is, when the damper 10 occupies the rotational angular position shown in FIG. 2, the conditioned air is blown toward the upper body of the passenger in the passenger compartment through the face outlet 13, the face outlet 2, and the face duct 21. Is done.

When the damper 10 is slightly rotated counterclockwise in FIG. 2, the face outlet 13 is partially closed and the foot outlet 14 is partially aligned with the foot outlet 19, so that the At the same time as the part is blown out from the face outlet 2, the remaining part is blown out toward the feet of the occupant of the passenger compartment through the foot outlet 14, the foot outlet 19, and the foot duct 23.

When the damper 10 is further rotated counterclockwise,
Since the communication between the face outlet 13 and the face outlet 2 is interrupted and only the foot outlet 14 is aligned with the foot outlet 19, the conditioned air is blown out only from the foot outlet 19.

When the damper 10 is further rotated, the foot outlet 14
And the foot outlet 19 are partially aligned and the defrost outlet 12 partially communicates with the defrost outlet 3, so that part of the conditioned air is blown out from the foot outlet 19 and the rest is The air is blown toward the inner surface of the windshield or the like through the defrost outlet 3 and the defrost duct 22.

When the damper 10 is further rotated, the foot outlet 14
And the foot outlet 19 are disconnected, and the defrost outlet
Since only 12 is aligned with the defrost outlet 3, the conditioned air is blown out only from the defrost outlet 3.

The drain condensed on the surface of the evaporator 4 drops on the bottom of the casing 1 and is discharged from a drain outlet 29 provided at one corner thereof.

[0017]

In the above-mentioned conventional apparatus, when the vehicle is largely inclined left and right, the drain flows backward from the inner bottom of the casing 1 through the suction port 25 into the blower case and leaks therefrom. There is a problem that the surrounding area is stained by dropping.

[0018]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and its gist is to provide a casing having a plurality of outlets at an upper portion and a suction port at a lower portion. Forming an air flow path for directing air sucked horizontally from the suction port upward, and selectively switching an evaporator, an air mix damper, a heater, and the plurality of air outlets in the air flow path. In the vehicle air conditioner having a damper, the evaporator is installed so as to be inclined so that its suction port side is higher than the suction port, and the bottom surface of the casing is inclined in the same manner as the inclination of the evaporator. drain collecting unit for collecting the drain water flowing back when the inclination of the vehicle the inlet side of the bottom surface is provided with the drain outlet from the bottom surface to its lowermost position Provided by sinking, and the drain complement
At the entrance of the junction, it extends from the suction port side flush with the bottom surface
An air conditioner for a vehicle, comprising a wind shield plate.

[0019]

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention is shown in FIG. The evaporator 4 is installed at a lower portion inside the casing 1 so as to be inclined so that the suction port 25 side becomes gradually higher. Like the evaporator 4, the bottom surface 1f of the casing 1 is inclined so that the suction port 25 becomes gradually higher. A drain outlet 30 is provided at the lowest position, and a drain collecting part 31 is provided on the suction port 25 side. It is formed to sink from 1f.

At the inlet of the drain collecting portion 31, a wind shield plate 32 is provided which protrudes from the suction port 25 side and extends a predetermined length flush with the bottom surface 1f. A drain pipe (not shown) is connected to the drain outlet 30 and the drain port 33 provided at the bottom of the drain collection part 31, respectively. The other configuration is the same as that of the conventional one shown in FIGS. 2 to 4, and the corresponding members are denoted by the same reference numerals and description thereof will be omitted.

Since the evaporator 4 is inclined, the drain condensed on the surface of the evaporator 4 smoothly drops on the bottom surface 1f of the casing 1.

When the vehicle is in a horizontal state, the drain flows down on the bottom surface 1f and is discharged from the drain outlet 30 through the drain pipe. The air that has flowed into the lower portion of the casing 1 from the suction port 25 is guided by the wind shield plate 32 and flows along the bottom surface 1f, so that the air does not flow into the drain collection portion 31, and thus the pressure loss does not increase. .

When the vehicle is greatly inclined left and right, the drain flows backward on the bottom surface 1f, enters the drain collecting section 31, and is discharged through the drain port 33 and the drain pipe.

[0025]

According to the present invention, the evaporator is installed so as to be inclined so that its suction port side is higher than the suction port, and the bottom surface of the casing is inclined in the same manner as the evaporator so that the drain outlet is located at the lowest position. for the provided, the drain of condensation on the surface of the evaporator et Bapore
Is inclined and the air sucked from the suction port
Therefore, it is energized and drains down the evaporator.
It is sent to the outlet side and can be smoothly dropped on the bottom of the casing, and the drain dripped on the bottom of the casing is also inclined at the bottom of the casing, and from the suction port.
It is urged by the sucked air to the drain outlet side
As it is sent, it smoothly flows into the drain outlet and is discharged smoothly from here .

[0026] Then, since the drain collecting unit for collecting the drain water flowing back when the inclination of the vehicle the inlet side of the bottom surface is provided by recessed from the bottom, toward the time of inclination of the vehicle, on the bottom surface to the suction port The drain that flows backward is collected in the drain collection part, so that it is possible to prevent the drain from flowing into the blower case through the suction port and leaking and dripping therefrom, thereby contaminating the surroundings.

Furthermore, due to the provision of the wind shield plate extends to a bottom surface flush with the inlet side to the inlet of the drain collecting unit, Ke from the suction port
Air that has been sucked into the pacing is guided to the air baffle plate in the bottom
Since it flows along the surface, it does not flow into the drain collection section.
Therefore, it is possible to prevent the air flow resistance from increasing. In addition, this wind shield plate is located at the bottom of the drain collection section
Because it extends flush with the surface,
The backflow drain is drained without being blocked by the wind shield.
It flows smoothly into the confluence.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 shows a conventional vehicle air conditioner, FIG.
It is sectional drawing which follows the A line.

FIG. 3 is a sectional view taken along line BB of FIG. 2;

FIG. 4 is a perspective view of a blow mode switching damper of a conventional vehicle air conditioner.

[Explanation of symbols]

 1 Casing 2, 3 Outlet 25 Inlet 4 Evaporator 5 Heater 6 Air mix damper 10 Blowout mode switching damper 1f Bottom 30 Drain outlet 31 Drain collecting part 32 Wind shield 33 Drain port

Continued on the front page (72) Inventor Ryosaku Akimoto 3-1-1 Asahicho, Nishi-Biwajima-cho, Nishi-Kasugai-gun, Aichi Prefecture Mitsubishi Heavy Industries, Ltd. Aircon Works (72) Inventor Sadahiko Tanaka 5-33 Shiba 5-chome, Minato-ku, Tokyo No. 8 Inside Mitsubishi Motors Corporation (72) Inventor Shigeharu Ishii 5-33-8 Shiba, Minato-ku, Tokyo Examiner at Mitsubishi Motors Corporation Limited Hideki Oie (56) References (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B60H 1/00 102 B60H 1/32 613

Claims (1)

(57) [Claims] An air flow path is formed in a casing having a plurality of air outlets at an upper portion and an air inlet at a lower portion to direct upwardly sucked air from the air inlet into the casing. In a vehicle air conditioner comprising an evaporator, an air mix damper, a heater, and a blowout mode switching damper for selectively switching the plurality of outlets, the evaporator may be arranged such that a suction port side of the evaporator is higher than the suction port. The casing is inclined and the bottom surface of the casing is inclined in the same manner as that of the evaporator to provide a drain outlet at its lowermost position, and a drain that flows backward to the suction port side of the bottom surface when the vehicle is inclined. A drain collection part for collecting the water is provided so as to be depressed from the bottom surface , and
The inlet of the drain collection section is flush with the bottom surface from the suction port side.
An air conditioner for a vehicle, wherein a wind shield plate is provided .