JPS5930723Y2 - Heating system for the rear seats of cab-over vehicles - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a heating system for the rear seats of a cab-over type vehicle, and is particularly applicable to a cab-over vehicle located at a position behind the engine in the engine compartment formed under the floorboard below the driver's seat. This invention relates to a heating device for rear seats of type automobiles.

For automobile engines, the high temperature summer is a harsh season for cooling.

In particular, cab-over type cars have the driver's seat above the engine compartment, and the engine is completely covered by a floorboard, which makes for nearly the worst cooling conditions.

Conventionally, the current situation has been to provide a flow of warm air in the engine compartment using the ram pressure generated when the vehicle is running and a cooling fan to overcome the problem.

On the other hand, to heat the cabin near the rear seats in a cab-over type vehicle, a rear seat heating device is placed inside the cabin, for example under the rear seat, and the rear seat heating device cools the air inside the cabin. This was done by exchanging heat with water to warm it and returning it to the cabin, so it was unavoidable that heating took a long time when the temperature was low.

The purpose of this invention is to solve these conventional problems at the same time.When cooling conditions are severe, warm air in the engine compartment is discharged outside the vehicle to reduce the burden on the engine cooling system, and when the temperature is low, it reduces the burden on the engine cooling system. To provide a heating device for a rear seat of a cab-over type automobile, which can be used to improve heating capacity by guiding warm air in an engine room.

The heating device for the rear seat of a cab-over type automobile according to the present invention is arranged at a position behind the engine in the engine room formed under the floorboard below the driver's seat.
and an inlet passage device that allows warm air in the engine room to be introduced, an outlet passage device that discharges the warm air introduced from the inlet passage device, and an outlet passage device that is provided in the outlet passage device. a switching device that can selectively guide the warm air discharged therefrom to either outside or inside the vehicle, and a flow path between the inlet and outlet passage devices, through which the hot air passes through. The device is characterized in that it includes a heat exchanger adapted to impart heat to the air and a blower device adapted to draw air through the inlet passage device and force it into the outlet passage device.

According to a preferred embodiment of the present invention, the inlet passage device is capable of introducing air also from the passenger compartment;
The air inside the vehicle can be further warmed by the heat exchanger while being mixed with warm air from the engine room, and the effect of improving heating capacity can be further enhanced.

Of course, it is also possible to introduce only warm air from the engine room or air from the passenger compartment.

Hereinafter, the present invention will be described in more detail by way of examples with reference to the accompanying drawings.

Referring to the drawings, especially FIGS. 1 and 2, a rear seat heating device 1 according to the present invention is installed in an engine room 4 in which an engine 3 is housed, which is formed below a floor plate 2a below the driver's seat of a cab-over type automobile 2. It is installed at the rear of the engine inside the vehicle.

As is well known, the engine 3 has a cooling fan 5, and a radiator 6 is installed in front of the cooling fan 5.

As can best be seen in FIG.
Openings 8a and 8b are formed in both of the engine compartment 4 and the passenger compartment 9, and the damper 10 allows air to be introduced only from either the engine room 4 or the vehicle compartment 9, or air from both at the same time. It has become.

A sirocco fan 12 of an electric blower 11 is installed immediately downstream of the inlet passage 8, and sucks air through the inlet passage 8 when activated.

The inlet channel 8 opens through an intermediate channel 14 into an outlet channel 15, which outlet channel 15 has outlets 15a, 15b arranged at right angles to each other, the outlets 15a
, 15b are located outside the vehicle (
It opens to the arrow 16) and into the passenger compartment 9.

This exit passage 15 is also provided with a damper 17, and can selectively guide the air forcedly sent by the blower 11 from the entrance passage 8 through the intermediate passage 14 to the outside of the vehicle or into the interior of the vehicle.

A heat exchanger 18 is installed in the intermediate passage 14, and hot cooling water from the engine 3 passes through this heat exchanger so as to impart heat to the air passing through the heat exchanger 18. good.

However, it is of course possible to use another heat source, such as an oil burner, for example.

In such a configuration, when the dampers 10 and 17 are positioned as shown by solid lines in FIG. When the outlet 15a is also closed, when the blower 11 is activated, the warm air from the engine compartment 4 flows through the inlet passage 8.
, passes through the intermediate passage 14, and is discharged through the outlet 15b of the exit passage 15, which is open to the outside of the vehicle.

At this time, it is common to prevent the cooling water of the engine 3 from passing through the heat exchanger 18 by closing an on-off valve provided in a hot water passage (not shown).

In this way, when the outside temperature is high and the engine is idling or the running speed is slow and the ram pressure tends to be insufficient, warm air is forcibly exhausted from the engine compartment 4, which is highly effective in preventing overheating. .

If the outside temperature is low and you want to increase the heating capacity, set the damper 10 in the inlet passage 8 to the position shown by the solid line t in Figure 1, and set the damper 11 in the outlet passage 15 to the position shown by the dotted chain line in Figure 1. Then, warm air from the engine room 4 is sucked into the inlet passage 8 under the operation of the blower 11, warmed by the heat exchanger 18, and then discharged into the passenger compartment 9.

After the warm air in the engine room 4 has warmed up further, the cabin 9
Since the air is pumped into the interior, the heating effect naturally improves.

Note that if the damper 10 of the inlet passage 8 is located at an intermediate position, that is, between the solid line and the dotted chain line, warm air from the engine room 4 and air from the passenger compartment can be sucked in at the same time, but this may depend on various conditions. I don't know, but it will probably be effective in quickly warming the air inside the passenger compartment 9.

When the outside air condition is poor, if the damper 10 of the inlet passage 8 is placed in the position shown by the dotted chain line in FIG. Can be done.

In this way, according to the present invention, the cooling capacity of the engine can be improved when the temperature is high with only one rear seat heating device in a cab-over type vehicle.

At the same time, when the temperature is low, the heating capacity can be improved.

[Brief explanation of the drawing]

Fig. 1 is a schematic horizontal sectional view showing a rear seat heating device according to the present invention installed in a position behind the engine in the engine compartment, and Fig. 2 is a cab-over type automobile equipped with a rear seat heating device according to the present invention. Schematic partial cross-sectional side view of
FIG. 3 is a perspective view of the rear seat heating device shown in FIGS. 1 and 2. FIG. 1... Heating device, 2... Cab-over type vehicle, 3... Engine, 4... Engine room, 8... Entrance passage, 9...
- Vehicle compartment, 10...Damper, 11...Blower, 14...Middle passage, 15...Exit passage, 17...Damper , 18... Heat exchanger.

Claims (3)

[Scope of utility model registration request] (1) A heating device for the rear seats of a cab-over type automobile, which is placed behind the engine in an engine room formed below the floorboard below the driver's seat, and which introduces warm air from the engine room. an inlet passage device configured to allow warm air to flow through the inlet passage device; an outlet passage device configured to discharge warm air introduced from the inlet passage device; a switching device that can selectively guide the air to either outside or inside the vehicle, and a heat exchanger provided in a flow path between the inlet and outlet passage devices to impart heat to the air passing therethrough. A heating device for a rear seat of a cab-over type automobile, comprising an exchanger and a blower device configured to suck air through the inlet passage device and forcibly send it to the outlet passage device. (2) Utility Model Registration Scope of Claim 1 The heating device for a rear seat of a cab-over type automobile as set forth in claim 1 is characterized in that the inlet passage device includes a switching device that also allows air inside the vehicle to be sucked in. A heating system for the rear seats of cab-over vehicles. (3) Scope of Utility Model Registration In the heating device for a rear seat of a cab-over type vehicle as set forth in claim 1, the heat exchanger utilizes cooling water from the engine. Heating device for seats.