JPS5851050Y2 - Automotive air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention generally relates to an air conditioner for an automobile, and more particularly to a duct device that utilizes ram pressure to improve the heat dissipation effect of a condenser that is difficult to ventilate due to its layout.

In an automobile air conditioner, the condenser is generally installed behind a bumper etc. due to the vehicle layout, so the amount of cold air hitting the condenser is reduced due to obstacles such as the bumper, and therefore the wind pressure due to the vehicle running, that is, the ram. Pressure is not used effectively due to the heat dissipation effect of the condenser.

The purpose of this invention is to improve the heat dissipation effect of the condenser by utilizing the ram pressure when the vehicle is running.

The present invention will be described below with reference to embodiments shown in the accompanying drawings.

Referring to FIG. 1, an air conditioner 10 for an automobile according to an embodiment of the present invention is installed under the floor of a cab-over type automobile such as a panzer or wagon at the front of the vehicle.

The automobile air conditioner 10 includes an outside air introduction air duct 15, an inside/outside air switching damper 24 provided in this air duct 15, a condenser 11, an evaporator 12 installed in a first duct 14, and the first duct 14. It has a blower 13 attached to the wall.

As shown in FIG. 2, the condenser 11 is located under the floor at the front of the vehicle, behind the bumper 2 and in front of the front wheels 4.

The first duct 14 is formed of a resin-coated steel plate, and is connected at one end to the outside air introduction air duct 15 by a fastener such as a bolt or nut.

The branch box 14a extends horizontally from the other end of the first duct 14 in a direction perpendicular to the axis of the first duct 14 (FIG. 1).

The central outlet 14b and the side ducts N7 and 18 are branched from the branch box 14a, and the ends of the side ducts N7 and 18 are open to the vehicle interior through the side outlets 17a and 18a.

A vent damper (not shown) is provided at the branching point of the branch box 14a and the side duct) 17.18 to separate the wind from the blower 13 into the lower outlet 14c, the central outlet 14b, and the side duct) 17.18.

The wind passing through the lower air outlet 14c passes through a heater core (not shown) installed in the branch box 14a and is blown out to the feet of the driver in the driver's seat 5.

The cold air passing through the central outlet 14b and the outlets 17a and 18a of the side ducts 17 and 18 is blown toward the face 1 and chest of the driver and the passenger seated on the front passenger seat 6.

The outside air introduction air duct 15 according to the present invention is made of polyethylene,
It is preferably molded from a synthetic resin such as polypropylene, and the flange portion 15a as shown in the button in FIG. 2 and in FIG.
, a pend duct portion 15a whose one end is integrally connected to the flange portion, and a second duct 15c branched downward from the pend duct portion 15b.

The flange portion 15a of the outside air introduction air duct 15 is formed with a plurality of holes 15d for passing bolts, and as shown in FIG. Prevent rainwater from entering the headlamp 3.

The other end of the pend duct portion 15b is fitted into the left end of the first duct 14, as shown in FIG. 1, and is screwed to the left end of the duct at the fitting portion 22.

Referring to FIGS. 2 and 4, the headlamp 3 is attached to the edge of the opening 1a of the panel 1 via a support member T, and the support member T is formed with a large number of notches to introduce outside air. The air is introduced well into the air duct 15.

In FIGS. 2 and 4, the pendoduct portion 14b
It will be noted that the second duct N5e branched from the second duct N5e opens directly above the condenser 11 to effectively guide cold air from around the headlamp to the condenser 11.

Note that 11a is a blower that forcibly blows cold air to the condenser 11.

However, although the illustrated blower 11a introduces only air from the outside air introduction air duct 15, it is of course possible to introduce air from other sources.

In addition, in the illustrated embodiment, the outside air introduction air duct 15
is attached to the vehicle body panel 1 behind the headlamp 3, but it may be attached to another location on the vehicle body panel if ram pressure from the front of the vehicle can be utilized.

In the operation of the automobile air conditioner 10 configured as described above, cold air generated by ram pressure when the vehicle is running passes through, for example, a notch in the support member I around the headlamp 3 and enters the outside air introduction air duct 15.

A portion of the introduced cold air is guided to the condenser 11 via the second duct 15c, and a residual portion of the cold air is guided to the evaporator 12 through the pendant portion 15b of the outside air introduction air duct and the first duct 14. The cooled air is guided and cooled, and the cooled air is sent out from the branch box 14a toward the passenger inside the vehicle by the blower 13 via the central outlet 14b and the outlets 17a and 18a of the side ducts (17 and 18).

Further, when air is introduced into the vehicle interior for cooling, the inside/outside air switching damper 14 is switched to open the inside air introduction port 23.

As described above, according to the present invention, the cold air generated by the ram pressure when the vehicle is running is effectively guided to the condenser, so that the condenser is actively cooled and the condensing performance is improved.

In addition, rainwater that enters the outside air intake air duct with cold air when the vehicle is running is guided to the condenser through the branch duct and then discharged to the outside of the vehicle. Other equipment is protected from moisture corrosion.

[Brief explanation of the drawing]

Fig. 1 is a cutaway plan view of an automotive air conditioner according to the present invention incorporated into a vehicle such as a truck or bus with an engine installed under the floor, and Fig. 2 is a vertical cross section taken along line I in Fig. 1. Figure 3 is a vertical sectional view along the line ■-■ in Figure 1, Figure 4 is a partially cutaway front view of the device in Figure 1, and Figure 5 is a perspective view of the outside air intake air duct. be. In the figure, 1... Vehicle body panel, 2...
・Bumper, 3...Headlamp, 10...
...Automotive air conditioner, 11... Condenser, 12
...Evaporator, 13...Prower, 14.
...First duct, 15...Outside air introduction air duct, 15b...Second duct, 17.18.
...Side duct.

Claims (1)

[Scope of claim for utility model registration] An air conditioner for an automobile that has a condenser located under the floor of the front of the vehicle, behind the bumper and in front of the front wheels, to introduce cold air using ram pressure when the vehicle is running. an outside air introduction air duct, and two ducts, a first and a second duct, branched from the outside air introduction air duct, and a portion of the cold air introduced into the outside air introduction air duct passes through the first duct and into the evaporator. An air conditioner for an automobile, characterized in that the cold air introduced into the outside air introduction air duct is guided to a device such as a blower, and the remaining cold air is guided to the condenser through the second duct.