JPH0729533B2 - Vehicle heating system - Google Patents

Description

TECHNICAL FIELD 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, as shown in FIG. 3, indoor heating of an automobile takes out the cooling water of the engine 21 through a hot water pipe 22 and circulates it in a heat exchanger 23 to heat the air to generate hot air.
For example, the air was blown from the defroster nozzle 24 to heat the interior of the vehicle. In addition, 25 is a control panel.

Further, as described 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 is connected via a three-way switching valve 39, 39 to a part of an air pipe 38 for indoor heating that heats the cab of the automobile. When the three-way switching valves 39, 39 connect the medium inflow pipe 40 and the medium outflow pipe 41 of the heat exchanger 35 to the air pipe 38, the air sent from the heater main body 36 is stored in the heat exchanger 35. It is designed to be fed into the cab 45 through the medium passage to be heated. 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, in the air A sent from the heater unit 36, the cooling water of the engine 31 is cold, so the cooling water sent from the hot water pipe 37 is cold. Therefore, 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 the medium outflow pipe 41 and the three-way switching valve 39.
It is discharged into the driver's cab via the and heats the driver's cab.

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. Then the engine
When the cooling water in 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 to send the warm air directly from the warm air inlet pipe 38 to the vehicle interior. To do.
As described above, the effect that the driver's cab can be immediately heated even immediately after the engine is started, and the driver does not have to drive in a cold and uncomfortable state.

The control device 42 operates so as 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 that detects the input from the fuel 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 an input from 44 and 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 type shown in FIG. 3, it is difficult for the engine with excellent thermal efficiency in recent years to warm the cooling water, and therefore, especially in the winter and cold regions, it takes a long time to warm the vehicle compartment. It took time, during which the driver had to drive in cold, uncomfortable and unfavorable conditions.

Regarding the engine warm-up device as shown in FIG. 4, let alone the warm-up of the engine body after cold start,
Indoor heating is performed immediately after starting, but for vehicles such as cab-over type wagons, one-box cars, trucks, etc. that have a driver's seat above the engine part, the above-mentioned in the intake pipe part of the engine due to the narrow engine room. It is difficult to attach such a burner device, a heat exchanger, a blower, etc., and the engine warm-up device cannot be applied to such a vehicle, and there is a problem.

Therefore, an object of the present invention is to rapidly heat the inside of the vehicle after the engine is started, and yet to provide a cab-over type wagon,
It can be easily installed in vehicles such as one-box cars and trucks, and especially it efficiently heats the driver's seat, and also makes the heating piping compact and makes it easier to install the heating device. An object of the present invention is to provide a vehicle heating device characterized in that the flow of the working air in the heating device is made smooth, and further, the heating device is configured such that it can be independently attached externally.

[Means for solving problems]

The present invention is configured as follows in order to solve the above problems and achieve the above objects. That is, the present invention relates to a vehicle heating device including a heater including a combustor, a heat exchanger, and a blower for blowing hot air into the vehicle, and is provided in front of the engine and substantially below the driver's seat. The blower, the heat exchanger, and the combustor are sequentially arranged in the width direction, the suction duct of the blower and the warm air blowing duct of the heat exchanger are provided on the driver side, and the blower scroll and the heat of the blower are further provided. The present invention relates to a heating device for a vehicle, which is connected to an air intake port of a exchanger in a substantially linear manner.

Further, in this vehicle heating system, the combustor burns with the air from the blower for the combustor, and the blower for the combustor is arranged on the passenger side.

Further, in this vehicle heating system, the combustion gas discharge port of the combustor is arranged near the center of the vehicle.

Further, this vehicle heating device can be applied to a cab-over type vehicle.

[Action]

The vehicle heating device according to the present invention is configured as described above and operates as follows. That is, according to the present invention, a heater including a combustor, a blower for the combustor, a heat exchanger, and a blower for the heat exchanger is sequentially arranged in front of the engine and in the width direction of the vehicle, and the suction of the heat exchanger is set. Since the air intake of the duct and the hot air outlet of the hot air blowing duct are provided on the driver's side, the space of the vehicle can be effectively utilized, and the combustion gas generated in the combustor and the suction duct from the driver's seat can be used. The cold air in the vehicle that has been sucked in is efficiently exchanged with heat in the heat exchanger to heat the air, thereby producing hot air. Particularly, since the blower scroll of the blower and the air intake port of the heat exchanger are connected to each other in a substantially linear manner, air flow resistance can be reduced.

Further, since the blower for the heat exchanger is arranged on the driver's side and the blower for the combustor is arranged on the passenger's side, the air flow is from the blower to the heat exchanger, and the warm air blown out. The driver's seat can be quickly heated because the driver's seat is provided with the inlet of the suction duct and the outlet of the hot air blower duct that move to the duct, flow smoothly, and suck the heating air.

Further, since the combustion gas exhaust port of the combustor is arranged near the center of the vehicle, the exhaust gas is not adversely affected when the vehicle travels or is parked.

〔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 diagram of a cab-over type one-box car vehicle provided with a vehicle heating system according to an embodiment of the present invention. The heater 1 includes a combustor 3, a heat exchanger 5, and blowers 2 and 6. The radiator 12 is provided in front of the engine 11, but the heater 1 is installed in front of the engine 11, in other words, in the front part of the vehicle.
That is, the floor 4 in the vehicle is located lower than the main body of the engine 11, and it is difficult to attach various devices to the engine 11, but it is necessary to utilize the space in front of the radiator 12. The heater 1 is attached. That is, the heater 1 is arranged at this position in the vehicle width direction, that is, parallel to the seat. The combustor 3 is arranged on the passenger seat side. The combustor 3 is configured so that the combustion air is blown through the air intake pipe 13 by the combustor blower 6. The combustion gas generated by the combustor 3 circulates in the heat exchanger 5 and is heated by exchanging heat with the heating air passing through the heat exchanger 5, and then provided near the center of the vehicle. Exhaust air is exhausted from the combustion gas exhaust port through the exhaust pipe 9. On the other hand, the heating air that has become the hot air sent from the heat exchanger 5 is blown into the vehicle from the hot air outlet through the hot air outlet duct 10 installed on the driver's side.

FIG. 2 shows a vehicle heating system according to the present invention as viewed from the front of the vehicle. The blower 2, the heat exchanger 5, and the combustor 3 for the heat exchanger are sequentially arranged in the width direction of the vehicle. The blower 6 for the combustor is arranged behind the combustor 3. The blower 2 for the heat exchanger is attached to the suction duct 8 that sucks cool air from the air intake provided in the front grill of the driver's seat, and the scroll outlet of the blower 2 and the cool air inlet of the heat exchanger 5 are substantially linear. It is in communication. Further, the hot air outlet of the heat exchanger 5 is provided on the same side as the cold air inlet, and is connected to the front grill of the driver's seat by the hot air outlet duct 10 for blowing out the warm air by the bent pipe 7 drawing a smooth curve. . The combustor 3 is arranged on the side opposite to the side where the suction duct 8 and the warm air blowing duct 10 of the heat exchanger 5 are attached, that is, on the passenger seat side.

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 in detail.

First, the heat exchanger 5 will be described. The blower 2 is installed upstream of the heat exchanger 5 through an air intake pipe.
A suction duct 8 which is a circulating air intake passage is attached to the suction port of the blower 2. The suction duct 8 may be configured so as to become gradually narrower toward the downstream side, or may be a simple circulation pipe. Heat exchanger 5
Has a structure in which the heat absorption passage cylinder is arranged on the outer circumference of the heat passage cylinder that is a double 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. The combustor 3 is attached to one end of the heat flow outward path tubular body.

Therefore, the heat exchanger 5 radiates the heat flow passage through which the combustion gas from the combustor 3 passes in the central portion, the heat transfer passage through which the combustion heat of the combustion gas is transmitted 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. At both ends of the outer case, an air intake pipe is attached to one end and a bending pipe 7 is attached to the other end, and the bending pipe 7 is connected to a warm air blowing duct 10. 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-outward-passage tubular body and one end of the heat-flow-backward-passage tubular body communicate with each other, and an exhaust pipe 9 having a combustion gas discharge port is attached to the other end of the heat-flow-backward tubular body. Has been. This combustion gas may be sent to the intake system of the engine, and in that case, it may be switched to an exhaust pipe for direct exhaust to the outside and a send pipe for sending to 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, heat receiving fins are formed inside the heat flow return path tubular body, and radiating fins are formed outside the heat flow return path tubular body. By arranging the heat receiving fins and the heat radiating fins in alignment with each other, the flow of the combustion gas can smoothly flow without being obstructed by the heat receiving fins. Also, the flow of air warmed by the combustion gas can smoothly flow without being obstructed 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 chamber air is taken in to generate vaporized fuel and air-fuel mixture, and the slightly present oil droplets or air-fuel mixture is ignited by the ignition glow plug. Then, the air-fuel mixture is burned in the combustion chamber. By using such a combustor 3, the liquid fuel is rapidly vaporized to become vaporized fuel, and the vaporized fuel is rapidly ignited or ignited to enable rapid combustion. 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 it can be used for heating.

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 warmed air is taken in by the blower 2 into the suction duct 8
From the blower 2, from the air intake to the heat exchanger 5
It is blown into the heat-absorbing passage cylinder. The air sent in is
It 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 tube body in the heat absorbing passage, and air passes between the heat radiating fins to absorb or take away combustion heat from the heat radiating fins. Can be warmed up. 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 out from the hot air outlet to the driver's seat side through the hot air blowing duct 10. The warm air keeps the inside of the vehicle warm, and then is sucked into the suction duct 8 by the action of the blower 2 through the filter of the air intake formed on the driver's seat side. The sucked air is sent from the scroll outlet of the blower 2 to the heat exchanger 5 through the air intake pipe again. The above operation is repeated and the inside of the vehicle is kept at a predetermined temperature.

Although one embodiment of the vehicle heating device according to the present invention has been described in detail, the present invention is not limited to the above detailed structure. That is, it goes without saying that various configurations can be applied to the combustor and the heat exchanger.
For example, as for the combustor, the object can be achieved as long as the combustor is one that vaporizes and ignites liquid fuel into vaporized fuel by using a glow plug that is a heating plug, and a rigid type, a horizontal type or the like can be applied. With respect to the heat exchanger, various design changes can be made to various shapes and structures, and shapes and structures of fins incorporated therein.

〔The invention's effect〕

Since the vehicle heating device according to the present invention is configured as described above, it has the following effects.

That is, according to the present invention, a heater including a combustor, a heat exchanger, and a blower is sequentially arranged in front of a vehicle, that is, in front of an engine and in a width direction of the vehicle, and an air intake port of a suction duct of the heat exchanger is provided. Since the hot air outlet of the hot air outlet duct is provided on the driver's side, the space of the vehicle can be effectively utilized, and the heating device can be operated independently of the engine to cool the engine as in the past. Compared to heating with water, the inside of the company can be heated more quickly after the engine is started, and the combustion gas generated in the combustor and the cold air in the vehicle sucked from the driver's seat through the suction dust are used in the heat exchanger. Heat can be efficiently exchanged and heated in the inside to make warm air,
In addition, the driver can be warmed quickly and efficiently, and the interior of the vehicle can be warmed early, making driving comfortable.

In addition, since the cold air intake and the hot air outlet are the pipes that are integrated on the driver's side, the pipe of the heating device can be formed in a compact size and can be easily installed even in a narrow space. The structure can be independently attached to the outside.

In particular, it can be easily attached to existing cab-over type wagons, one-box cars, trucks and other vehicles. Moreover, only the heating device can be appropriately attached and detached as desired, which is extremely convenient. Further, the blower for the heat exchanger is arranged on the driver side, the blower for the combustor is arranged on the passenger side, and the blower for the heat exchanger, the heat exchanger, and the combustor are Since it is arranged in the width direction of the vehicle and the outlet of the heat exchanger and the hot air blowing duct are connected by a curved pipe that draws a smooth curve, there is very little resistance to the flow of heating air and it is smooth. Can flow

Further, since the blower scroll of the blower and the air intake port of the heat exchanger are almost linearly connected, the air flow resistance can be further reduced, and the combustion gas discharge port of the combustor can be further reduced. Is disposed near the center of the vehicle, the exhaust gas from the combustor has a small effect on the surrounding environment even when the heating device is operated while the vehicle is traveling, parking, or the like.

[Brief description of drawings]

FIG. 1 is a schematic view showing a vehicle equipped with a vehicle heating system according to the present invention, FIG. 2 is a front view showing an embodiment of a vehicle heating system according to the present invention, and FIG. 3 is a conventional vehicle heating system. FIG. 4 and FIG. 4 are schematic views showing a conventional engine warm-up device. 1 ... Heating device, 2 ... Blower for heat exchanger, 3 ... Combustor, 4 ... Flower of vehicle, 5 ... Heat exchanger, 6 ... Blower for combustor, 7 ... Bend tube, 8 ...... Suction duct, 9 ...
… Exhaust pipe, 10 …… Warm air blowing duct, 11 …… Engine, 12
…… Radiator, 13 …… Air intake pipe.

Claims (4)

[Claims] 1. A vehicle heating system comprising a heater comprising a combustor, a heat exchanger, and a blower for blowing hot air into the vehicle, wherein the width of the vehicle is in front of the engine and substantially below the driver's seat. The blower, the heat exchanger, and the combustor in this order, and the blower, the suction duct, and the warm air blowout duct of the heat exchanger are provided on the driver's side, and the blower scroll and the heat exchange of the blower are further provided. A vehicle heating system characterized in that it is substantially linearly connected to the air intake of the container. 2. The vehicle according to claim 1, wherein the combustor burns with air from a blower for the combustor, and the blower for the combustor is arranged on a passenger seat side. Heating system. 3. The vehicle heating system according to claim 1, wherein the combustion gas discharge port of the combustor is arranged near the center of the vehicle. 4. The vehicle heating system according to claim 1, which is applicable to a cab-over type vehicle.