JPH0717533Y2 - Vehicle heating system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a vehicle heating device that is independently attached to a vehicle such as a cab-over type wagon, a one-box car, a truck, or the like.

[Conventional technology]

Conventionally, for indoor heating of a vehicle such as an automobile, as shown in FIG. 3, the cooling water of the engine 21 is taken out by a hot water pipe 22, and this is circulated in a heat exchanger 23 to heat the air by heating the air. Was discharged from the defroster nozzle 24 to heat the interior of the vehicle. In addition, 25 is a control panel.

Further, as disclosed in Japanese Utility Model Laid-Open No. 60-073866, there is disclosed an engine warm-up device capable of warming the engine body after cold start and immediately heating the room. This will be outlined with reference to FIG.

In FIG. 4, a fuel is supplied from a fuel tank 33 through a fuel passage in the middle of an intake pipe 34 of an engine 31, a burner device 32 for vaporizing and burning the fuel is provided, and a heat exchanger is provided immediately downstream thereof. An engine warm-up system with 35 is shown. The heat exchanger 35 includes a three-way switching valve 39, 3 in a section of an air pipe 38 for indoor heating that heats the driver's cab of the vehicle.
Connected via 9. Three-way switching valves 39, 39 are heat exchangers
When the medium inflow pipe 40 and the medium outflow pipe 41 of 35 are connected to the air pipe 38, the air sent from the heater main body 36 passes through the medium to be heated in the heat exchanger 35 and the cab 45. It is supposed to be sent inside.

With the above configuration, the combustion gas G generated in the burner device 32 is introduced into the heat exchanger 35 during the warm-up operation after the engine is started. On the other hand, the air A sent from the heater section 36 is
Since the cooling water of the engine 31 is cold, the cooling water sent from the hot water pipe 37 is cold, so the air A is cold air,
Not warm air. The air A is introduced from the medium inflow pipe 40 to the downstream side in the heat exchanger 35 via the three-way switching valve 39. Then, it flows in the heat exchanger 35 in the opposite direction to the flow of the combustion gas G and is heated, and is discharged into the operation room through the medium outflow pipe 41 and the three-way switching valve 39 to heat the operation room.

Therefore, even immediately after the engine is started, the air A introduced into the driver's cab is sufficiently warm, and the driver's cab can be brought to a comfortable temperature in a short time even in winter. Next, when the cooling water of the engine 31 is sufficiently heated, the air A sent from the heater section 36 becomes warm air, so the three-way switching valve 39 is switched and the warm air is directly fed into the vehicle compartment from the warm air inlet pipe 38. I will send it. Thus, even immediately after the engine is started, the driver's cab can be heated immediately, and the driver does not have to drive in a cold and uncomfortable state.

Note that the control device 42 operates to switch the three-way switching valve 39 by a signal from the temperature sensor of the cooling water of the engine 31, and detects the fuel flow rate of the fuel injection pump (not shown) of the engine 31. A rotation speed sensor 44 that detects the input from the flow rate sensor 43 and the rotation speed of the engine 31.
It is possible to detect the operating state of the engine 31 by input from and to control the burner fuel supply according to the operating state.

[Problems to be solved by the invention]

However, in the vehicle heating system of the system shown in FIG. 3, it becomes difficult for the cooling water to warm up in an engine with excellent thermal efficiency in recent years, so that it takes a long time to warm up the passenger compartment especially in winter and cold regions. In short, the driver had to drive in a cold and uncomfortable state during that time.

Regarding the engine warm-up device as shown in FIG. 4, let alone the warm-up of the engine body after cold start,
The room is heated immediately after the engine is started.However, for vehicles such as cab-over type wagons, one-box cars, trucks, etc., where the driver's seat and passenger's seat are located above the engine part, the engine room is small, so the engine intake pipe It is difficult to attach the above-described burner device, heat exchanger, blower, etc. to the vehicle, and the engine warm-up device cannot be applied to such a vehicle.

Therefore, the purpose of this invention is to solve the above-mentioned problems, and the inside of the vehicle can be heated rapidly after the engine is started, and moreover, it can be easily installed in vehicles such as cab-over type wagons, one-box cars, trucks, etc. A heating device for a vehicle is provided which has a heating air intake port provided in a space in the vehicle and a plurality of hot air blowout ports, and is configured as a multipurpose and efficient heating pipe. It is to be.

[Means for solving problems]

The present invention is configured as follows in order to achieve the above object. That is, the present invention is directed to a combustor arranged in the vehicle front width direction in front of the engine, a heat exchanger into which the combustion gas of the combustor is sent, and a combustion gas delivery duct for sending the combustion gas of the combustor to the intake system of the engine. A blower for combustion air that supplies air to the combustor, a blower for heating air that sends air to the heat exchanger, a suction duct that connects the suction port of the blower for heating air and the air intake port on the passenger side, The present invention also relates to a vehicle heating device having a driver's seat above an engine, which has an outlet duct provided with an outlet for heating air in front of a driver's seat and a passenger's seat.

Further, in this vehicle heating device, the combustion air blower for sending combustion air to the combustor is disposed on a driver seat side in the vehicle width direction, and the heating air blower for heating air is an assistant in the vehicle width direction. It is arranged on the seat side.

Further, in this vehicle heating device, a plurality of the air outlets for the heating air are provided.

[Action]

In the vehicle heating system according to the present invention configured as described above, a heater including a combustor, a heat exchanger, and a blower is arranged in the front of the vehicle in front of the engine, and the heating air is sucked into the heat exchanger. In addition to providing the duct intake on the passenger side,
Since the outlet of the heating air outlet duct is installed in front of the driver's seat and passenger's seat, the vehicle space can be effectively utilized.
The combustion gas generated in the combustor is guided to the heat exchanger, and the cold air in the vehicle that is sucked in from the passenger seat by the combustion gas in the heat exchanger is heat-exchanged to heat it to form warm air. The air can be blown out from the air outlet of the blow-out duct, and the driver's seat and the passenger's seat can be quickly heated.

Further, since the air outlets of the blowout ducts are provided in front of the driver's seat and the passenger's seat, not only the driver's seat and the passenger's seat are heated but also the inside of the vehicle can be heated to function as a defroster. Since the outlet of the hot air outlet duct is provided in front of the vehicle, a plurality of outlets can be provided as desired.

〔Example〕

Hereinafter, an embodiment of a vehicle heating device according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is a schematic view of a vehicle provided with a vehicle heating system according to an embodiment of the present invention. A heater 1 is installed in front of the engine 11 and the radiator 12. That is, in a cab-over type vehicle such as a one-box car or a truck, that is, in a vehicle having a driver's seat above the engine 11, a space for disposing the heater 1 in front of the radiator 12 is provided. Can be taken.
The heat exchanger 5 heats the air inside the vehicle circulated by the blower 6, and the combustion gas delivery duct 13 of the combustor 3 is connected to the intake manifold 7 attached to the engine 11 to transfer the combustion gas to the engine. I am sending it to 11.

FIG. 2 shows a state in which the heater 1 is viewed from the front of the vehicle. At one end of the heat exchanger 5, a suction duct 9 in which an air intake 14 for sucking the cold air in the vehicle, that is, the heating air is located on the passenger side is attached. The suction duct 9 for sucking the cool air is attached almost vertically to the suction port of the blower 6,
The scroll outlet of the blower 6 is almost linearly connected to an air intake pipe 16 provided at one end of the heat exchanger 5,
The air delivery duct 15 provided at the other end of the is connected to the blowout duct 8. Next, the air outlet duct 8 is connected to the hot air outlet 10 provided in front of the driver's seat and the passenger seat.

The blower 6 has a function of sucking the air inside the vehicle and blowing out the air that has become warm air in the heat exchanger 5 into the vehicle. Further, the combustor 3 is installed on the end of the heat exchanger 5, that is, on the side where the air intake pipe 16 is provided and in front of the side of the driver's seat. The combustor 3 is attached to the end of the heat exchanger 5 in a straight shape, that is, linearly. Further, a combustion gas delivery duct 13 for sending the combustion gas generated by the combustor 3 to the intake manifold 7 of the engine 11 and an air delivery duct connecting the blower 2 for the combustion air to introduce the combustion air from the outside air. 4 and are attached.

Then, in the combustor 3, the combustion air and the vaporized fuel are mixed and burned to generate combustion gas, and the combustion gas is introduced into the heat exchanger 5. The combustion gas exchanges heat with the cold air in the vehicle sucked through the suction duct 9 and is heated to become warm air. Further, a plurality of outlets 10 of the hot air outlet duct 8 are provided and are arranged near the front grill, that is, in front of the driver's seat and the passenger seat so as to function as a defroster.

Next, although details of the combustor 3 and the heat exchanger 5 are not shown, it is preferable to use, for example, those having the following configurations. An example of these will be described.

First, the heat exchanger 5 will be described. An air blower 6 having an air intake pipe 16 connected thereto is installed upstream of the heat exchanger 5. Circulation air intake passage to the suction port of the blower 6,
That is, the suction duct 9 is attached. Suction duct 9
May be a structure that gradually narrows toward the downstream side or a simple circulation pipe.

The heat exchanger 5 has a structure in which a heat flow passage cylinder, which is a double cylinder, is arranged in the heat absorption passage cylinder. The heat flow passage tube body is composed of a heat flow outward path tube body and a heat flow return path tube body arranged on the outer periphery thereof. A combustor 3 is attached to one end of the heat flow outward tube through a heat flow passage pipe or the like.

Therefore, the heat exchanger 5 dissipates the heat flow passage through which the combustion gas from the combustor 3 passes in the central portion, the heat transfer passage for transmitting the combustion heat of the combustion gas to the outer peripheral side in the middle portion, and the combustion heat to the outer portion. It is composed of an endothermic passage that turns cold air into warm air. Moreover, the heat flow passage, the heat transfer passage, and the heat absorption passage are arranged coaxially with each other. The heat absorption passage cylinder constitutes an outer case of the heat exchanger 5 and is covered with a heat insulating material or the like. For both ends of the outer case,
One end of the air intake pipe 16 and the other end of the air delivery duct
The air delivery duct 15 communicates with the warm air blowing duct 8. A cup-shaped lid with fins is fixed to the end of the heat flow return tube.

With this structure, the flow passage of the combustion gas, that is, the heat flow passage and the heat transfer passage, and the flow passage of the air that is heat-exchanged for heating are completely cut off. Further, the other end of the heat-flow-outgoing-passage tubular body communicates with one end of the heat-flow-backward-passing tubular body, and a combustion gas discharge port is formed at the other end of the heat-flow-backward traveling tubular body. This combustion gas may be sent to the intake system of the engine, that is, the intake manifold 7. In that case, it may be possible to switch between an exhaust pipe for directly exhausting to the outside and a feed pipe for sending the engine.

Further, a large number of heat receiving fins are arranged in the heat flow return tube body. Further, a large number of heat radiation fins are arranged in the heat absorption passage cylinder. Regarding the heat radiation fin, the vicinity of the air inlet, that is, the leading end of the heat radiation fin may be cut out. In that case, the air smoothly flows into the space between the radiation fins without being blocked by the radiation fins. From the viewpoint of heat conduction, it is preferable that the heat receiving fins and the heat radiating fins are integrally provided in the heat flow return tube body. In other words, the heat receiving fins are formed inside the heat flow return path tubular body, and the heat radiation fins are formed outside the heat flow return path tubular body.

If the heat receiving fins and the heat radiating fins are arranged in alignment with each other, the combustion gas can smoothly flow without being blocked by the heat receiving fins. Further, the air warmed by the combustion gas can smoothly flow without being blocked by the heat radiation fins.

Next, the combustor 3 will be described. The combustor 3 is composed of a combustion cylinder, and the combustion cylinder is divided into a vaporization chamber and a combustion chamber by a partition plate having a communication hole, and a vaporizer having a glow plug for vaporization is disposed so as to penetrate the combustion chamber. An ejection port for ejecting vaporized fuel vaporized by the vaporizer is opened in the vaporization chamber, and an ignition glow plug is installed in the vaporization chamber.

The vaporization glow plug vaporizes the liquid fuel into vaporized fuel, and the combustion air is taken in to produce vaporized fuel and air-fuel mixture, which are ignited by the ignition glow plug to slightly existing oil droplets or air-fuel mixture. , Burning the air-fuel mixture in the combustion chamber. By using such a combustor 3, the liquid fuel is rapidly vaporized to vaporized fuel, the vaporized fuel is rapidly ignited, and rapid combustion becomes possible. As a result, the combustor 3 can immediately send the combustion gas to the heat exchanger 5, the function of the heat exchanger 5 can be quickly fulfilled, and heating can be provided.

The vehicle heating device according to the present invention is configured as described above and operates as follows. In order to make the explanation of the operation easier to understand, the case where the combustor 3 and the heat exchanger 5 having the above-described structures are used will be described.

First, the blowers 2 and 6, the fuel supply device for the combustor 3, the ignition glow plug, the vaporization glow plug, and the control device for controlling them are operated. By working these,
Liquid fuel is supplied to the combustor 3 and converted into vaporized fuel,
It becomes a burning state. The combustion gas generated by the combustor 3 is blown into the heat flow passage in the heat flow outward cylinder. The combustion gas blown into the heat flow passage makes a U-turn by being guided by the lid from the heat flow passage of the heat flow forward passage tube body and flows through the heat transfer passage in the heat flow return passage tube body. Since a large number of heat receiving fins are installed in the heat transfer passage in the radial direction, the combustion gas is deprived of combustion heat by the heat receiving fins and finally discharged from the combustion gas discharge port.

On the other hand, the air to be warmed is blown by the blower 6 into the suction duct 9
And is blown into the heat absorption passage tube body of the heat exchanger 5 from the air intake pipe 16 by the blower 6. The sent-in air flows through between the radiation fins installed in the heat absorption passage. A large number of radial heat radiating fins are fixedly arranged on the outer periphery of the heat flow return cylinder in the heat absorbing passage. The air passes between the radiating fins and absorbs or takes away combustion heat from the radiating fins to be warmed. The warmed air becomes warm air, and then is further warmed and flows through the space between a large number of radiation fins radially provided on the outer periphery of the lid.

Next, the warmed hot air is blown from the air delivery duct 15 through the warm air blowing duct 8 into the vehicle through the hot air outlet 10 provided in front of the driver's seat and the passenger seat. Warm air
The inside of the vehicle is kept warm and is again sucked by the action of the blower 6 through the suction duct 9 formed in front of the passenger seat. The above operation is repeated and the inside of the vehicle is maintained at a predetermined temperature.

[Effect of device]

The vehicle heating device according to the present invention is configured as described above and has the following effects. That is, according to this invention, a heater comprising a combustor, a heat exchanger and a blower is arranged in the front part of the vehicle in front of the engine, the intake duct of the heat exchanger is provided on the passenger side, and the blowing duct is provided. Since the air outlets are installed in front of the driver's seat and passenger's seat, the space of the vehicle can be effectively utilized, and an independent combustor and heat exchanger separate from the engine can be installed. Compared to heating with engine cooling water, it is possible to heat the driver's seat and passenger's seat as well as the passenger compartment rapidly after the engine is started. Further, since the heater is arranged in front of the engine of the vehicle, it can be easily attached to vehicles such as existing cab-over type wagons, one-box cars, trucks and the like.

Moreover, the air intake of the cold air intake duct of the heat exchanger is provided on the passenger side with plenty of space, and the combustion gas generated in the combustor is guided to the heat exchanger so that the combustion gas is generated in the heat exchanger. The cold air in the vehicle that is sucked in from the passenger seat can be heated by exchanging heat to turn it into warm air, which can be blown out from the outlet of the warm air blowing duct of the heat exchanger, which can quickly heat the driver's seat and the passenger seat. it can.

Further, since the air outlets of the blowout ducts are provided in front of the driver's seat and the passenger's seat, not only the driver's seat and the passenger's seat are heated but also the inside of the vehicle can be heated to function as a defroster. Since the outlet of the hot air outlet duct is provided in front of the vehicle, a plurality of outlets can be provided as desired, and the heating pipe can be efficiently configured for multiple purposes.

[Brief description of drawings]

FIG. 1 is a schematic view showing a vehicle in which an embodiment of a vehicle heating device according to the present invention is arranged, FIG. 2 is a front view of an embodiment of a vehicle heating device according to the present invention, and FIG. 3 is a conventional vehicle. FIG. 4 is a perspective view showing a heating device for a vehicle, and FIG. 4 is a schematic view showing a conventional engine warm-up device. 1 ... Heater, 2 ... Combustion air blower, 3 ... Combustor, 4 ... Air duct, 5 ... Heat exchanger, 6 ... Heating air blower, 7 ... Intake manifold, 8 ... … Warm air outlet duct, 9 …… Suction duct, 10 …… Warm air outlet, 11 …… Engine, 12 …… Radiator, 13 …… Combustion gas delivery duct, 14 …… Air intake, 15 …… Air delivery duct , 16 ……
Air intake pipe.

Claims (3)

[Scope of utility model registration request] 1. A combustor arranged in a vehicle front width direction in front of an engine and a heat exchanger into which combustion gas of the combustor is sent.
Of the combustion gas delivery duct that sends the combustion gas of the combustor to the intake system of the engine, the blower for combustion air that supplies air to the combustor, the blower for heating air that sends air to the heat exchanger, and the blower for heating air. Vehicle heating with a driver's seat above the engine having a suction duct connecting the inlet and the air intake on the passenger side and an outlet duct with a heating air outlet in front of the driver's seat and passenger's seat apparatus. 2. The blower for combustion air for sending combustion air to the combustor is arranged on the driver seat side in the vehicle width direction, and the fan for heating air for heating air is arranged on the passenger seat side in the vehicle width direction. The vehicle heating device according to claim 1, wherein the utility model registration is performed. 3. The heating system for a vehicle according to claim 1, wherein a plurality of the air outlets for heating air are provided.