JPH1081123A - Vehicular air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To permit an easy and quick exchange of an evaporator in a vehicular air conditioner having the evaporator, an air-mix damper, a heater and a blowoff-mode changeover damper for selectively changing over a plurality of blowoff openings in an airflow passage which is defined in its casing formed at its upper part with the plurality of blowoff openings and at its lower part with a suction opening for directing air taken in horizontally at the suction opening upward. SOLUTION: A casing is provided with an evaporator 4 arranged so as to be inclined in its airflow passage at the direction-changed part thereof where the horizontal airflow passage is directed upward so that the end of the evaporator 4 on the side of a suction opening 25 of the casing is situated above the suction opening 25 while the other end is situated below it. The casing is made dividable into plural pieces. One division is adapted to serve as the upper half part of the suction opening 25 as well as an evaporator-attachment/detachment cover 30D for covering one side of the evaporator 4. The detachment of the cover 30D allows the extraction of the evaporator 4 out of a casing 30.

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 applicant has filed a patent application for a vehicle air conditioner shown in FIGS. 3 to 5 with Japanese Patent Application No. 7-310726. FIG. 3 is a sectional view taken along line AA in FIG.
FIG. 4 is a sectional view taken along the line BB of FIG. 3, and FIG. 5 is a perspective view of the blowout mode switching damper.

[0003] A face outlet 2, a defrost outlet 3, and a foot outlet 19 are formed at an upper portion of a casing 1 embedded in a center console, and a suction port 25 is formed at a lower portion. It is formed inside this casing 1,
An evaporator 4, an air mix damper 6, a heater 5, and a blowing mode switching damper 10 are provided in an air flow path for directing air sucked horizontally from the suction port 25 upward.

[0004] The evaporator 4 is mounted horizontally below the casing 1. The air mix damper 6 is guided by a guide 26 and is slidably 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. 5, 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, air inside the vehicle or outside air urged by a blower built in a blower case (not shown) flows from the suction port 25 to the casing 1.
After being sucked horizontally in the lower part and changing the direction upward,
In the process of flowing into and flowing through the evaporator 4, heat is exchanged with the refrigerant to be cooled.

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 rotation angle position shown in FIG. 3, the conditioned air is blown out 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. 3, the face outlet 13 is partially closed and the foot outlet 14 is partially aligned with the foot outlet 19, so that the conditioned air 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 surface of the casing 1 and is discharged from a drain port 29 provided at one corner thereof.

[0017]

In the above-mentioned conventional apparatus, when the evaporator 4 is replaced, the casing 1 is removed from the vehicle and then the casing 1 is disassembled and the evaporator 4 is taken out. There is a problem that it takes time and effort.

[0018]

DISCLOSURE 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 air conditioner for a vehicle provided with a damper, the evaporator in the direction changing part from the horizontal to the upper part in the air flow passage has its suction port side end higher than the suction port, and
The casing is arranged so as to be inclined so that the opposite end is lower, and the casing has a structure capable of being divided into a plurality of parts.
One is formed as an evaporator detachable cover that forms the upper half of the suction port and covers one side of the evaporator at the same time, and by removing this cover, the evaporator can be pulled out of the casing. It is in the air conditioner for vehicles.

Another feature is that the evaporator detachable cover is provided with a guide for supporting the end of the evaporator on the suction port side.

[0020]

1 and 2 show an embodiment of the present invention.
1 is a front view, and FIG. 2 is a partially exploded perspective view. As shown in FIG. 1, the evaporator 4 includes a casing 30.
In the air flow passage formed in the direction change portion from horizontal to upward, the suction port side is inclined higher than the suction port 25, and the opposite end is inclined so as to be lower than the suction port 25. It is arranged.

The casing 30 can be divided into a plurality (four in the figure), and each divided casing 30A, 30B, 30C, 30D
Are integrated by being connected to each other using a number of clips 31.

The split casing 30D forms the upper half of the suction port 25 and constitutes an evaporator detachable cover for covering the left side of the evaporator 4, and is connected to the split casings 30A and 30C by using clips 31 and screws 35. I have.
A guide 32 for supporting the end of the evaporator 4 on the suction port 25 side is fixed inside the cover 30D.

The right end of the evaporator 4 has a stepped portion 34 formed in the divided casing 30B and a divided casing 30C.
Is held in a predetermined posture by abutting the step portion 33 formed on the guide 32 and placing the left end on the guide 32.

When the evaporator 4 is to be replaced, first, the refrigerant pipes and sensors connected to the evaporator 4 are removed, and then the clip 31 for connecting the detachable cover 30D and the divided casings 30A and 30C. And screw 35
, The detachable cover 30D is separated from the split casings 30A and 30B and removed. Then, the suction port side end of the evaporator 4 falls from the guide 32 and becomes free, so that the evaporator 4 is slid to the upper left with this end, and from the opening 36 formed by removing the detachable cover 30D. Pull it out of the casing 30.

The repaired or new evaporator 4 is stored and installed inside the casing 30 in the reverse order of the above.

[0026]

According to the present invention, the evaporator is provided at the direction changing portion from the horizontal direction to the upward direction in the air flow path so that the end on the suction port side is higher than the suction port and the end on the opposite side is lower. Since the casing is arranged to be inclined and the casing can be divided into a plurality of parts, one of which is formed as an evaporator detachable cover that forms the upper half of the suction port and covers one side of the evaporator at the same time. By removing the detachable cover without removing the evaporator from the vehicle, the evaporator can be easily and quickly pulled out of the casing.

If the evaporator detachable cover is provided with a guide for supporting the end of the evaporator on the suction port side, the end of the evaporator on the suction port side becomes free when the detachable cover is removed, so that the evaporator can be more easily pulled out. Becomes possible.

[Brief description of the drawings]

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

FIG. 2 is a partially exploded perspective view of the embodiment.

FIG. 3 is a cross-sectional view of the conventional air conditioner, taken along line AA of FIG.

FIG. 4 is a sectional view taken along line BB of FIG. 3;

FIG. 5 is a perspective view of a blow mode switching damper of a conventional air conditioner.

[Explanation of symbols]

 30 Casing 2, 3 Outlet 25 Inlet 4 Evaporator 6 Air mix damper 5 Heater 10 Blowout mode switching damper 30A, 30B, 30C Split casing 30D Detachable cover 31 Clip 32 Guide 33, 34 Step 35 Screw 36 Opening

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Katsunari Shiroyama 3-chome, Asahicho, Nishi-Biwajima-cho, Nishi-Kasugai-gun, Aichi Prefecture Inside the Air Conditioning Works of Mitsubishi Heavy Industries, Ltd. (72) Inventor Tatsuhide Kawahara Nishi-Biwajima-cho, Nishi-Kasugai-gun, Aichi 3-chome, Asahicho 3-chome, Mitsubishi Heavy Industries, Ltd. Air Conditioning Works (72) Inventor Shinji Sakano 3-chome, Asahimachi, Nishi-Biwajima-cho, Nishi-Kasugai-gun, Aichi Prefecture Mitsubishi Heavy Industries, Ltd. Air-conditioning Works (72) Inventor Sadahiko Tanaka Tokyo 5-33-8 Shiba, Minato-ku, Mitsubishi Motors Corporation (72) Inventor Yuto Ono 5-33-8 Shiba, Minato-ku, Tokyo Mitsubishi Motors Corporation

Claims (2)

[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. An air conditioner for a vehicle, comprising an evaporator, an air mix damper, a heater, and a blowout mode switching damper for selectively switching the plurality of outlets, wherein a direction changing portion from horizontal to upward in the air flow path is provided. The evaporator has its suction port side end portion higher than this suction port,
And, the opposite end portion is arranged so as to be inclined so as to be lower, and the casing has a structure capable of being divided into a plurality,
One of them is formed as an evaporator detachable cover that forms the upper half of the suction port and covers one side of the evaporator, and the evaporator can be pulled out of the casing by removing this cover. Vehicle air conditioner. 2. The air conditioner for a vehicle according to claim 1, wherein a guide for supporting an end of the evaporator on the suction port side is provided on the evaporator detachable cover.