JPH0671853B2 - Vehicle heating system - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating device for a vehicle having a plurality of seats, such as vans and wagons, having an outlet for the heating device under the seat.

[Conventional technology]

Conventionally, in a van / wagon vehicle having a plurality of seats, a heater core for heating ambient air using cooling water of an automobile engine and a blower for blowing air heated by the heater core are arranged in a dead space of the vehicle, 2. Description of the Related Art There is known a system in which warm air is blown from an air outlet fixed to a predetermined place in a room to heat passengers of a plurality of seats.

However, in such a heating device, the hot air blowing direction is fixed, and it is not possible to uniformly heat all the occupants in a plurality of seats. Particularly in recent vehicles such as buses and wagons, there is an increasing tendency for some of the plurality of seats to be of the rotating and seating type. Therefore, an occupant seated in a rotating seat must rotate the seat. If you do, warm air may not reach your feet. Therefore, in view of the situation as described above, conventionally, as shown in JP-A-57-205211, a heater core and a fan are arranged in the lower rear space of a van / wagon vehicle having a plurality of seats to cover them. A heating device for an automobile has been devised, which is provided with a rotatable cylindrical housing and can freely change the hot air blowing direction.

[Problems to be Solved by the Invention]

However, in the heating device of the above publication, a considerable space is required under the seat in order to dispose the heater core and the fan for blowing the air heated by the heater core. However, it is difficult to secure the above space in an actual wagon vehicle.

In addition, providing a heating device including a heater core and a fan under each seat causes an increase in manufacturing cost, and also causes a problem that installation work such as routing of hot water pipes to the heater core becomes very complicated. .

In view of the above points, the present invention is capable of satisfactorily blowing hot air toward the occupant's feet in correspondence with the direction of the seat even in a rotating seat-type seat, and disposing a heating unit below the seat. It is an object of the present invention to provide a vehicle heating device that can be easily attached to a vehicle by eliminating the above.

[Means for Solving the Problems]

In order to achieve the above object, the present invention provides a vehicle in which a plurality of seats are provided in a vehicle compartment, at least a part of which is a rotatable seat, and the vehicle is provided in a header panel covering an engine of the vehicle A heating unit having a case provided with an air inlet and an air outlet, a heater arranged in the case for heating ambient air, and a heater arranged in the case and heated by the heater. A blower that blows air, a main duct that is disposed on the vehicle front side of the rotatable seat, has a blowout port that blows warm air toward the seat, and is connected to the discharge port of the case. , A branch duct provided so that one end communicates with the discharge port of the case and the other end opens below the rotatable seat, and a direction of air blown from the other end of the branch duct. The rotatable A blowing direction changing means that changes in conjunction with a seat, an air distribution damper that is provided to open and close a flow path of warm air that flows into the branch duct, and a rotating seat that turns toward a vehicle rear side. The technical means of including a damper operating mechanism for operating the air distribution damper in an open state in conjunction with the rotation of the seat when the seat is moved.

[Action]

By adopting the above technical means, when the rotatable seat faces the front side of the vehicle, warm air from the heating unit passes through the main duct, and from the outlet of the main duct, the occupant's feet of the seat. Is blown out toward. At this time, since the air distribution damper closes the flow path of the branch duct,
No warm air flows in the branch duct.

On the other hand, when the rotatable seat faces the vehicle rear side, the warm air blowing direction from the opening on the other end side of the branch duct moves to the vehicle rear side from the opening on the other end side in conjunction with the rotation of the seat. Is set.

At the same time, the damper operating mechanism operates to drive the air distribution damper to the open state.

As a result, the warm air from the heating unit flows into the branch duct, and is blown from the opening on the other end side of the branch duct to the vehicle rear side below the seat. By blowing out the warm air from the lower side of the rotatable seat to the rear side of the vehicle, it is possible to satisfactorily blow the warm air not only to the occupant's feet of this seat but also to the occupant's feet behind this seat. it can.

〔The invention's effect〕

Therefore, according to the present invention, when the rotatable seat is facing the rear of the vehicle, the heating area is substantially expanded,
The occupants in a plurality of seats can be uniformly heated, and the heating feeling of the occupants can be effectively enhanced.

When the seat is facing the front of the vehicle, warm air can be blown directly to the passenger's feet from the outlet of the main duct located in front of the seat, and the main duct is directly connected to the heating unit to prevent ventilation. Since it is also small, a sufficient amount of warm air can be blown out, and a feeling of heating is improved.

Further, in the present invention, a heating unit (heat source portion) having a built-in heater and a blower is separated from a hot air outlet portion, and the heating unit is provided in a header panel that covers the vehicle engine, and a heating unit is provided below the parlor. Since only the air outlet is provided, installation of the heating unit and the hot air outlet does not impair the occupant's habitability, and the space below the seat can be effectively utilized for the original function of the seat.

Moreover, by branching the warm air from the heating unit provided at one location, heating at a plurality of locations is possible, so the manufacturing cost is relatively low, and the mounting work on the vehicle is also simple.

〔Example〕

 Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings.

The vehicle to which the heating system of this embodiment is applied is shown in FIGS.
As shown in the figure, a driver's seat 3 and a passenger seat 31 are provided in the front of the passenger compartment, two rows of passenger seats 4a, 4b and 5 are provided in the rear, and a driver's seat 3 and a passenger seat 31 on the front side and a rear side are provided. A cab-over type automobile having a net plate header panel (2) covering a vehicle engine (not shown) between the passenger seats (4a, 4b), in which a heating unit (1) is provided inside the edder panel (2). ing.

The heating unit 1 has an air passage inside and has a resin case 11 provided with an air inlet and an air outlet. A blower fan 13 driven by an electric motor (not shown) is provided in the passage of the air intake port in the case 11. In addition, a heating heat exchanger (heater) 14 is installed in the middle of the passage of the case 11 so as to block the passage, and the cooling water of the automobile engine flows through this heat exchanger 14. ing. The heating unit 1 is arranged in a header panel 2 on the driver's seat 3 side (right side in FIG. 3) as shown in FIG. The case 11 of the heating unit 1 is screwed and fixed to a bracket (not shown) fixed to the header panel 2 by welding and a bracket (not shown) fixed to the mudguard portion of the front wheel of the vehicle by welding. Further, the heating unit 1 is isolated from the engine (not shown) in the header panel 2 by a partition plate (not shown). The heating heat exchanger 14 is composed of a heater core composed of a pipe through which engine cooling water (hot water) passes and fins soldered to the outer peripheral surface of the pipe, and the pipe has a heater pipe communicating with the engine cooling water. (Not shown) are joined. There is an air duct 15 in the air inlet of case 11.
Are joined together, and the air duct 15 communicates with a hole provided in the side surface of the getter panel 2 facing the passenger seat 4a.
The header panel 2 is covered with a carpet, and a resin suction grill 16 is inserted from above the carpet having holes at the same positions as the holes of the header panel 2 and screwed to the header panel. The air duct 15 is inserted and held in the opening on the outlet side of the suction grill 16 and sucks the air in the vehicle compartment through the suction grill 16. A band-shaped main duct 17 located on the vehicle front side of the passenger seats 4a and 4b is coupled to the air outlet of the case 11. The main duct 17 penetrates the header panel 2 through a hole provided near the intake grill 16 and extends in the vehicle lateral direction along the side surface of the header panel 2 facing the passenger seats 4a and 4b. The other end of 17 is closed. A plurality of air outlets 17a are formed at substantially equal intervals from the center to the end of the main duct 17 extending in the vehicle lateral direction, and in this example, four air outlets 17a are formed as shown in FIG. Therefore, the outlet of this main duct 17
The 17a blows warm air toward the passenger seats 4a and 4b. Further, the carpet covering the header panel 2 is also formed with four holes at the same positions as the four outlets 17a.
An outlet grill (not shown) is attached to 7a.

As shown in FIGS. 1 and 2, a branch duct 70 is arranged in the main duct 17 below the passenger seats 4a, 4b which are rotatable along the side trim X of the vehicle body. Reference numeral 70a in FIG. 3 designates one end of the branch duct 17 as the main duct 17.
The discharge port for connecting to is shown. On the other hand, the other end of the branch duct 70 opens below the passenger seats 4a and 4b. That is, as shown in FIG. 4, the branch duct 70 is provided with a cylindrical opening at a position below the passenger seats 4a and 4b.
70b opens upward. On the other hand, on the lower surface of the passenger seats 4a, 4b, there is a blowing duct 71 made of resin which is a blowing direction varying means.
However, it is fixed by the stay 72, the connecting end 71a of the blowout duct 71 has a cylindrical shape having a larger diameter than the opening 70b of the branch duct 70, and when the passenger seats 4a, 4b are installed, the opening 70b is opened. It is designed to be rotatable. Meanwhile, the outlet duct 71
The air outlet 71b has a flat rectangular shape and is open to the front side of the vehicle. Between the passenger seats 4a, 4b and the branch duct 70, an iron support plate 73 having a circular hole 73a in the center is fixed to the vehicle floor by four stays 74. Two sea racks 75 are fixed to the upper surface of the support plate 73 to support the passenger seats 4a and 4b. Therefore,
When the passenger seats 4a and 4b are installed, the weight of the passenger seats 4a and 4b is received by the sea track 75 portion so that the branch duct 70 and the blowing duct 71 are not loaded. Therefore, when the passenger seats 4a and 4b are rotated, the lower surfaces of the passenger seats 4a and 4b and the sea track 75 are slidably rotated. In this case, the shape of the sea track 75 may be, for example, a ring shape, and a bearing may be provided between the sea track 75 and the passenger seats 4a and 4b.

Further, one end of the cable 76 is U-shaped on the stay 72 of the passenger seat 4a.
It is attached via a frame 77, and the other end of the cable 76 is connected to a wind distribution damper 79 (Fig. 2).
Is adapted to switch the opening and closing of the flow path in conjunction with the rotation of the passenger seat 4a. Therefore, in this example, the U-shaped frame 77, the cable 76 and the like constitute a damper operating mechanism. As shown in FIG. 2, the damper 79 is provided on the passenger seats 4a, 4a.
When b is facing the front of the vehicle, the flow path of the branch duct 70 is closed.

Although not shown, another heating unit for heating the driver's seat 3 and the passenger's seat 31 is disposed on the front grill side of the vehicle, and the heat exchanger of this heating unit and this embodiment are used. The heat exchanger 14 of the heating unit 1 is connected in parallel by a heater pipe. A heating switch (not shown) of the heating unit 1 is provided on the rear side trim X,
By turning on this switch, the electric motor of the blower fan 13 operates and the heating unit 1 operates.

Next, the operation of this heating device will be described. Hot engine cooling water heated by a vehicle engine (not shown) is introduced into the heating heat exchanger 14. And the rear side trim X
The electric motor of the blower fan 13 is operated by turning on a heating switch (not shown) provided in the. As a result, the blower fan 13 rotates, so that the air in the vehicle compartment is sucked from the suction grill 16, passes through the air duct 15 and enters the case 11, and further passes between the fins of the heating heat exchanger 14. Hot water is sent to the pipe of the heat exchanger 14 for heating, and the heat is transmitted to the fin through the pipe wall. The air passing between the fins receives heat from the fins and is heated. The heated air enters the main duct 17 and is blown toward the passenger seats 4a, 4b, 5 in the passenger compartment from four air outlets 17a provided from the central portion of the main duct 17 to the other end. As a result, warm air is supplied to the passenger seats 4a, 4b, 5 provided in the rear part of the vehicle compartment. At this time, the air distribution damper 79 closes the flow path of the branch duct 70. The hot water whose heat is dissipated in the heating heat exchanger 14 is sent to a vehicle engine (not shown) through a hot water pipe, and the hot water is heated again and circulates.

When the passenger seats 4a, 4b are rotated 180 ° in the direction of arrow A in FIG. 4 from the state shown in FIG. 2 so as to face the rearmost passenger seat 5, the cable 76 is Fourth
When drawn in the direction of arrow B, the air distribution damper 79 rotates to fully open the flow path inside the branch duct 70. Therefore, the main duct 17
A part of the warm air introduced therein passes through the branch duct 70 and reaches the blowout duct 71. At this time, the air outlet 71 of the air outlet duct 71
b is directed toward the rear of the vehicle as the passenger seats 4a and 4b rotate, so that warm air is blown from the outlet 71b toward the feet of the passengers at the passenger seats 4a and 4b and the feet of the passenger at the passenger seat 5. Supplied. Therefore, even if the passenger seats 4a and 4b are rotated, the passenger seat 4
A comfortable heating feeling can be given to the passengers a, 4b, and 5.

Further, in the present embodiment, the amount of tensile displacement of the cable 76 changes and the opening degree of the air distribution damper 79 changes according to the rotation angle of the passenger seats 4a, 4b, so that the passenger seats 4a, 4b are changed to the positions shown in FIG. When rotated 90 ° from the state shown in (3), the air distribution damper 7a is half-opened, and a slightly smaller amount of warm air is blown out from the outlet 71b to the feet of the additional passengers 4a, 4b. In addition,
At this time, needless to say, warm air is also blown out from the air outlet 17a of the air duct 17.

As described above, the heating device according to this embodiment includes the heating unit 1
Between the carpet and the side surface of the header panel 2 facing the occupant seats 4a, 4b, and the carpet, the main duct 17 having a relatively thin cross section is not housed inside the header panel 2 and located in the vehicle compartment. It is only provided in. Therefore,
The comfortability of the passengers sitting in the passenger seats 4a and 4b immediately after the hot air outlet 17a is not impaired. Further, noise generated by the blower fan 13 of the heating unit 1 is less likely to enter the vehicle interior. Further, since the heating unit including the heat exchanger and the blower as in the prior art is not arranged under the passenger seat 4, it becomes easy to provide the passenger seats 4a and 4b with functions such as sliding, reclining and rotating.

The present invention is not limited to the above-described embodiments, and various modifications as described below are possible.

(1) FIG. 5 shows a modified example of the blowing direction varying means located below the passenger seats 4a and 4b, and at the opening end of the branch duct 70,
A flat blowout duct 80 having blowout openings 80a, 80b in both front and rear directions of a vehicle is provided. A circular hole 80c is opened on the upper surface of the blowout duct 80. On the other hand, passenger seats 4a, 4b
A semi-cylindrical minute outlet switching member 81 is attached to the lower surface of the air outlet switching member 81 when the passenger seats 4a and 4b are arranged on the upper surface of the air outlet duct 80. It is installed as possible. In this case, when the passenger seats 4a and 4b are in the positions shown in FIG. 2, the front air outlet 80b is opened and the rear air outlet 8b is opened.
0a is closed. Then, move the passenger seats 4a and 4b 1 from that position.
When rotated by 80 ° to face the passenger seat 5, the outlet switching member 81 also rotates 180 °, and the rear outlet 80a is opened,
The front air outlet 80b is closed. In addition, the front outlet 8
Even if 0b is closed and the blower outlets 80a are opened only when the passenger seats 4a and 4b are seated in the rear seats 5, and the blowing direction varying means is configured to blow warm air from the blower outlets 80a. Good.

(2) The blowing direction varying means of the branch duct 70 located below the occupant seats 4a, 4b is not limited to the above-described embodiment, but, for example, the branch duct 70 may be a bellows duct that can be expanded and contracted midway. The outlets of the bellows duct may be directed in the rotating direction of 4a, 4b.

(3) The position of the air distribution damper 79 may be, for example, provided in the middle of the main duct 17 in addition to the position shown in FIG.
When introducing hot air to the 70 side, the downstream side of the main duct 17 is closed to block the blowout from the blowout port 17a, and the blowout port 7a is closed.
You may make it blow out warm air only from 1b.

(4) An evaporator of a cooling unit may be provided in the air duct 15 on the suction side of the blower fan 13 or in the case 11 to provide a dehumidifying and heating device.

[Brief description of drawings]

FIG. 1 is a sectional view showing a vehicle to which the device of the present invention is applied, FIGS. 2 to 5 show an embodiment of the device of the present invention, and FIG. The schematic view seen, FIG. 3 is a schematic view looking forward from the passenger seat, and FIGS. 4 and 5 are exploded views showing the structure of the air outlet located below the rotatable passenger seat. 1 …… Heating unit, 11 …… Case, 13 …… Blower fan, 1
4 …… Heat exchanger for heating, 16 …… Suction grille, 17 …… Main duct, 17a …… Blowout port, 70 …… Branch duct, 71 …… Blowout duct, 71b …… Blowout port, 76 …… Damper operation Mechanical cable,
79 …… Wind distribution damper.

Claims (1)

[Claims] 1. In a vehicle having a plurality of seats provided in a vehicle compartment, at least a part of which is a rotatable seat, the seat is disposed in a header panel covering an engine of the vehicle, and an air intake port and an exhaust port are provided. A heating unit having a case provided with an outlet, a heater arranged in the case for heating ambient air, and a blower arranged in the case for blowing air heated by the heater. A main duct connected to a discharge port of the case, the main duct being disposed on the vehicle front side of the rotatable seat, having a blowout port for blowing warm air toward the seat, A branch duct having one end communicating with the other end and the other end opening below the rotatable seat, and a seat capable of rotating in the direction of air blown from the other end of the branch duct. Change in conjunction with Blow-out direction varying means, an air distribution damper provided to open and close a flow path of the warm air flowing into the branch duct, and the seat when the rotatable seat is rotated toward the vehicle rear side. And a damper actuating mechanism for operating the air distribution damper in an open state in association with the rotation of the vehicle heating device.