JP2000158940A - Air conditioning unit for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively utilize the space present in the side of a vehicle air conditioning unit to facilitate the removal or insertion of an air filter by constituting a filter unit with a filter casing and a filter inserted thereto through an insert port part formed on the side wall of the filter casing. SOLUTION: An air conditioning unit U is provided with a unit casing 10, and a blower unit 20, a filter unit 30, an evaporator 40, and a heater unit 50 arranged therein. The filter unit 30 is arranged under the blower unit 20 together with the evaporator 40, and it is formed of a flat cubic filter casing 31 and an air filter 32. The insert port part 31a of the filter casing 31 is formed not on the bottom wall but on the right wall, and opened to the right. Accordingly, in the maintenance and inspection of the air filter 32, the filter 32 can be easily taken out to the right through the right insert port part 31a by removing the lid plate of the right insert port part 31a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air conditioning unit.

[0002]

2. Description of the Related Art Conventionally, for example, in an air conditioning unit mounted on a small truck, there is an air conditioning unit in which an air filter is inserted and accommodated in a filter casing provided on an inflow side of an evaporator.

[0003]

By the way, when the air conditioning unit is not placed completely at the center, the size of the air conditioning unit in the horizontal direction can be sufficiently larger than that in the vertical direction. For this reason, sufficient space can be secured with the floor below the air conditioning unit. Therefore, even if a filter casing having an insertion port formed in the bottom wall is employed, the air filter is taken out from the space between the bottom wall of the filter casing and the floor below the filter casing for maintenance and inspection of the air filter. Can be.

However, when the air-conditioning unit is completely placed in the center, the original air-conditioning capacity of the air-conditioning unit cannot be obtained unless the air-conditioning unit has sufficient vertical dimensions. The space between the floor is narrow. Therefore, there is a problem that the air filter is difficult to be taken out from the space between the bottom wall of the filter casing and the floor under the filter casing through the insertion port or is not taken out at all, resulting in extremely poor workability.

In order to deal with such a problem, the present invention focuses on the fact that a sufficient space usually exists on the side of a vehicle air conditioning unit.
An object of the present invention is to make effective use of the space to facilitate removal of an air filter from a filter casing and insertion of the air filter into the filter casing.

[0006]

In order to solve the above-mentioned problems, according to the first aspect of the present invention, a completely center-mounted air-conditioning unit is mounted on a vehicle and installed in an evaporator (40) and an evaporator (40). A filter unit (30) is provided on the upstream side. The filter unit includes a filter casing (31) and a filter (32) inserted into the filter casing from an insertion opening (31a) formed in a side wall thereof.

In the present invention thus constructed, there is usually sufficient space on the side of the air conditioning unit, that is, on the side of the insertion opening of the side wall of the filter casing. The air filter can be easily taken out from the filter casing to the side from the insertion opening in the side wall thereof. As a result, even if the bottom wall side of the filter unit is narrow because the air conditioning unit is a completely center-mounted type, the maintenance and inspection of the air filter can be performed with good workability irrespective of this.

Here, for example, when the clutch of the vehicle is located in the vicinity of the insertion opening of the filter casing so that the clutch hinders taking out of the air filter, a hinge type air filter is used as the air filter. When the air filter is used, the air filter can be easily taken out by bending the air filter so as not to collide with the clutch.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show an embodiment in which the present invention is applied to a complete center air-conditioning unit U for light trucks. The air conditioning unit U is mounted at the front of the light truck at the center in the left-right direction.

FIG. 1 is a diagram showing a state in which the air conditioning unit U is mounted on the small truck as viewed from the left side of the small truck. FIG. 2 is a diagram showing a state in which the air conditioning unit U is mounted on the small truck as viewed from the front side of the small truck. Further, the steering wheel H of the light truck is located on the right side of the cabin of the light truck (see FIG. 2).

The air conditioning unit U includes a unit casing 1
0, and this unit casing 10 is provided in FIG.
As shown by, the small truck is supported by the front wall W on the floor F at the center in the left-right direction at the front. Here, since the air conditioning unit U is completely placed at the center,
The space between the bottom wall of the unit casing 10 and the floor below the unit casing 10 is very small in order to take a sufficient vertical dimension. The front wall W extends downward from the lower edge of the front windshield FW of the light truck and is connected to the floor F.

The air conditioning unit U has a unit casing 1
1 includes a blower unit 20, a filter unit 30, an evaporator 40, and a heater unit 50 assembled at the positions shown in FIGS. Blower unit 20
The airflow is introduced from the inside air introduction port 11 or the outside air introduction port 12 of the unit casing 10 and is blown to the filter unit 30 located thereunder. The inside air inlet 11
Is opened and closed by an inside air opening / closing door 11a.

As shown in FIG. 1, the filter unit 30 is located below the blower unit 20 together with the evaporator 40.
Is installed from the upstream side. Filter unit 3
Reference numeral 0 denotes a flat rectangular parallelepiped filter casing 31 and an air filter 32.

The filter casing 31 has an insertion opening 31a (hereinafter referred to as a right insertion opening 31a) formed on a right side wall thereof.
1, the air filter 32 is inserted and accommodated from the right insertion opening 31a. Here, the distance L between the right insertion slot 31a and the clutch C of the small truck located to the right thereof is very narrow, and is about 10 cm to 15 cm. The insertion opening 31a is closed by an appropriate cover plate.

As shown in FIGS. 3 (a) and 3 (b), the air filter 32 is configured as a hinge type air filter in which respective filter portions 32a made of non-woven fabric are connected to each other by resin rods 32b so as to be relatively rotatable. I have. However, the air filter 32 is inserted into the filter casing 31 in a direction orthogonal to each resin rod 32b. FIG.
The hatched area indicated by the two-dot chain line in FIG.
Indicates the position of.

The filter casing 31 is passed through the inlet and outlet formed on both front and rear walls of the blower unit 2.
The blast airflow from 0 flows into the evaporator 40. Also,
The airflow that has flowed into the filter casing 31 is cleaned by the air filter 32. The evaporator 40 cools the outflow airflow from the filter unit 30. The heater unit 50 is located behind and obliquely above the evaporator 40, and heats the cooling air flow from the evaporator 40 to flow toward the outlet switching door 13 as hot air. . Here, the amount of cooling air flowing into the heater unit 50 from the evaporator 40 is determined by the air mix door 1.
4 is adjusted.

The heating air flow from the heater unit 50 and the cooling air flow from the evaporator 40 through the air mixing door 14 are mixed, and the face of the unit casing 10 is changed according to the switching position of the two outlet switching doors 13 and 15. Air is blown out from the outlet 16 or the defroster outlet 17 into the cabin of the small truck. In FIG. 2, reference numeral 18 denotes a pipe for the heater unit 50, and reference numeral 19 denotes a pipe for the evaporator 40.

In the present embodiment thus configured, in the filter unit 30, the insertion opening 31a of the filter casing 31 is formed not on the bottom wall of the filter casing 31, but on the right side wall of the filter casing 31. And open to the right. Therefore,
In maintenance and inspection of the air filter 32, the air filter 32 can be easily taken out from the filter casing 31 rightward from the right insertion port 31a after removing the cover plate for the right insertion port 31a (FIG. 2). At the arrow S direction).

Here, since the clutch C is located near the right insertion opening 31a of the filter casing 31,
The clutch C hinders the removal of the air filter 32. Since the air filter 32 is configured as a hinge type air filter as described above, the air filter 32 is bent so as not to collide with the clutch C. Can be easily taken out.

In the above-described embodiment, an example has been described in which the present invention is applied to a small truck having a steering handle H on the right side in a vehicle interior. The present invention may be applied to a small truck having a handle. In this case, the right insertion opening 3 of the filter unit 30
1a, there is no clutch C and the space for taking out the air filter 32 is large.
Various air filters such as a non-bendable air filter may be used without being limited to the hinge type.

In practicing the present invention, the present invention is not limited to a small truck, but may be applied to any vehicle that employs a complete center type air-conditioning unit and that has a small space on the bottom wall side of the air-conditioning unit. Applicable.

[Brief description of the drawings]

FIG. 1 is a side view showing one embodiment of an air conditioning unit for a small truck according to the present invention.

FIG. 2 is a front view of the air conditioning unit of FIG. 1 as viewed from the front side of a small truck.

FIGS. 3A and 3B are a side view and a front view of the air filter of FIG. 1, respectively.

[Explanation of symbols]

U: air conditioning unit, 30: filter unit, 31: filter casing, 31a: right insertion opening, 32: air filter, 40: evaporator.

Claims (1)

[Claims] 1. A completely centered air-conditioning unit equipped with an evaporator (40) mounted on a vehicle and a filter unit (30) attached to the evaporator on the upstream side thereof, wherein the filter unit comprises: Filter casing (31)
And a filter (32) inserted through an insertion opening (31a) formed in a side wall of the filter casing.