Exhaust pipe structure for combustion type heater

Abstract

To curb an increase in back pressure in an exhaust pipe and to further reduce an impact on a passenger cabin.SOLUTION: A combustion type heater is arranged at a side section below a front passenger seat of a vehicle and supplies warm air from a front lower side of the passenger seat or a front lower side of a driver seat. An exhaust pipe structure of the combustion type heater has an exhaust pipe of a combustion type heater posteriorly extended along a side face below the passenger seat and an exhaust pipe outlet arranged in a direction toward the side face of the passenger seat between front and rear wheels. Because the exhaust pipe outlet is arranged between the front and rear wheels, a length of the exhaust pipe can be shortened compared to a case of arranging the same at a rear section of the vehicle and thereby curbing an increase in back pressure in the exhaust pipe. Additionally, arranging the exhaust pipe outlet so as to direct toward the side face of the passenger seat enables an impact of exhaust on a passenger cabin to be reduced.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to an exhaust pipe structure of a combustion heater, and more particularly to an exhaust pipe structure of a combustion heater that supplies warm air from a front lower side of a passenger seat and a front lower side of a driver seat of a vehicle. [Background technology]

[0002] Conventionally, a proposed type of combustion heater is one in which an intake silencer is placed on top of the heater body, and the periphery is covered with a cover that is open on the bottom to allow air to flow (see, for example, Patent Document 1). In this combustion heater, the cover blocks water from above and the sides, preventing it from being sucked in through the intake silencer. Water from below is also blocked by a waterproof plate installed between the inner surface of the cover and the heater body, preventing it from reaching the intake silencer. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 10-138743 Summary of the Invention [Problem to be solved by the invention]

[0004] In the case of an in-vehicle combustion heater, the layout of the heater body, the intake port, the hot air outlet, and the exhaust pipe are important issues. In particular, when it comes to the layout of the exhaust pipe of a combustion heater, if the length of the exhaust pipe is long, the back pressure increases, and if it is short, the back pressure decreases but may affect the passenger compartment.

[0005] The main purpose of the exhaust pipe structure of the combustion heater disclosed herein is to suppress an increase in back pressure in the exhaust pipe and to minimize the effect on the passenger compartment. [Means for solving the problem]

[0006] The exhaust pipe structure of the combustion heater of the present disclosure employs the following means to achieve the above-mentioned main object.

[0007] The exhaust pipe structure of the combustion heater disclosed herein is: An exhaust pipe structure of a combustion heater that is disposed on a side portion below a passenger seat at the front of a vehicle and supplies hot air from at least a front lower side of the passenger seat and a front lower side of a driver's seat, an exhaust pipe of the combustion heater extends rearward along a side surface below the passenger seat, and an exhaust pipe outlet is disposed between the front wheels and the rear wheels toward the side surface of the passenger seat; It is characterized by:

[0008] The combustion heater of the present disclosure is disposed on the side below the passenger seat at the front of the vehicle, and supplies hot air at least from the front lower side of the passenger seat and the front lower side of the driver's seat. In the exhaust pipe structure of the combustion heater of the present disclosure, the exhaust pipe of the combustion heater extends rearward along the side surface below the passenger seat, and the exhaust pipe outlet is disposed between the front and rear wheels toward the side of the passenger seat. Since the exhaust pipe outlet is disposed between the front and rear wheels, the length of the exhaust pipe can be shortened compared to a case in which the exhaust pipe outlet is disposed at the rear of the vehicle, and the back pressure of the exhaust pipe can be prevented from increasing. In addition, since the exhaust pipe outlet is disposed toward the side of the passenger seat, the impact of the exhaust on the passenger compartment can be reduced. As a result, the back pressure of the exhaust pipe can be prevented from increasing and the impact on the passenger compartment can be reduced. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a planar layout schematic diagram showing an example of a planar layout of a combustion heater 20 according to an embodiment of the present disclosure on a vehicle. [Diagram 2] FIG. 2 is a side view of a combustion heater according to an embodiment of the present invention, showing an example of the arrangement of the combustion heater in a vehicle as viewed from the side. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Next, a mode (embodiment) for carrying out the present disclosure will be described. Fig. 1 is a plan view schematic diagram showing an example of a planar arrangement of a combustion heater 20 as an embodiment of the present disclosure on a vehicle. Fig. 2 is a side view schematic diagram showing an example of an arrangement of the combustion heater 20 of the embodiment on a vehicle as viewed from the side.

[0011] Although not shown, the inside of the combustion heater 20 of the embodiment is separated into a lower combustion chamber and an upper heating chamber. A combustion device that mixes fuel and air and burns the mixture is built into the combustion chamber. The combustion heater 20 functions as a heater by heating the air in the heating chamber using the combustion energy in the combustion chamber. The combustion heater 20 is disposed on the side (door side) below the passenger seat of the vehicle.

[0012] The combustion device of the combustion chamber of the combustion heater 20 is provided with an intake pipe 22 attached to the lower part of the combustion chamber at the front of the vehicle, and an exhaust pipe 24 attached to the lower part of the combustion chamber at the rear of the vehicle. The exhaust pipe 24 extends rearward along the door below the passenger seat, and has an exhaust pipe outlet 26 that discharges exhaust gas diagonally rearward on the passenger side between the front and rear wheels on the passenger side. The combustion device of the combustion chamber of the combustion heater 20 is provided with a fuel supply pipe 42 connected to a fuel tank 40 located near the bottom of the rear seat. Therefore, the fuel supplied from the fuel tank 40 through the fuel supply pipe 42 to the combustion device of the combustion chamber is mixed with air supplied from the intake pipe 22 and combusted, and is guided to the exhaust pipe 24 and discharged diagonally rearward and outward from the exhaust pipe outlet 26 located diagonally rearward on the passenger side between the front and rear wheels on the passenger side.

[0013] An air intake 30 is attached to the heating chamber of the combustion heater 20 at the upper rear part of the vehicle, and a duct 32 is attached to the front of the vehicle. Duct 32 has an outlet 34 attached in front of the passenger's feet, and further extends to the driver's seat side to have a driver's seat outlet 36 attached in front of the driver's feet. Therefore, air supplied from air intake 30 is heated in the heating chamber and blown out from passenger's seat outlet 34 and driver's seat outlet 36 via duct 32, heating the passenger compartment.

[0014] In the combustion heater 20 of the embodiment described above, the exhaust pipe 24 is attached to the rear part of the vehicle below the combustion chamber, the exhaust pipe 24 extends rearward along the door below the passenger seat, and an exhaust pipe outlet 26 is disposed between the front and rear wheels on the passenger seat side, discharging exhaust air diagonally rearward on the passenger seat side. Since the exhaust pipe outlet 26 is disposed between the front and rear wheels in this manner, the length of the exhaust pipe 24 can be shortened compared to an exhaust pipe outlet 26 disposed at the rear of the vehicle, and the back pressure of the exhaust pipe 24 can be prevented from increasing. Furthermore, since the exhaust pipe outlet 26 is disposed to discharge exhaust air diagonally rearward on the passenger seat side, the impact of the exhaust on the passenger compartment can be reduced.

[0015] The combustion heater 20 in the embodiment is mounted on the passenger seat side located to the left of the driver's seat in a right-hand drive vehicle, but in a left-hand drive vehicle, it may be mounted on the passenger seat side located to the right of the driver's seat.

[0016] In order to enhance the heating effect of the combustion heater 20 of the embodiment, a curtain or the like having a heat insulating effect may be installed between the driver's seat and the passenger seat and the rear seat. By insulating the area between the driver's seat and the passenger seat and the rear seat with this curtain, the effect of the heater can be increased when only one person is riding in the driver's seat or when two people are riding in the driver's seat and the passenger seat.

[0017] The correspondence between the main elements of the embodiment and the main elements of the invention described in the section on means for solving the problems will be described below. In the embodiment, the combustion heater 20 corresponds to the "combustion heater", the exhaust pipe 24 corresponds to the "exhaust pipe", and the exhaust pipe outlet 26 corresponds to the "exhaust pipe outlet".

[0018] Note that the correspondence between the main elements of the embodiment and the main elements of the invention described in the Means for Solving the Problem column does not limit the elements of the invention described in the Means for Solving the Problem column, since the embodiment is an example for specifically explaining the form for implementing the invention described in the Means for Solving the Problem column. In other words, the interpretation of the invention described in the Means for Solving the Problem column should be made based on the description in that column, and the embodiment is merely a specific example of the invention described in the Means for Solving the Problem column.

[0019] The present disclosure has been described above using embodiments, but the present disclosure is not limited to these embodiments in any way, and it goes without saying that the present disclosure can be embodied in various forms without departing from the gist of the present disclosure. [Industrial Applicability]

[0020] The present disclosure is applicable to the combustion heater manufacturing industry and the like. [Explanation of symbols]

[0021] 20 Combustion heater, 22 Intake pipe, 24 Exhaust pipe, 26 Exhaust pipe outlet, 30 Intake port , 32 duct, 34 passenger side outlet, 36 driver's side outlet, 40 fuel tank, 42 ​​fuel supply pipe.

Claims

[Claim 1] An exhaust pipe structure of a combustion heater that is disposed on a side portion below a passenger seat at the front of a vehicle and supplies hot air from at least a front lower side of the passenger seat and a front lower side of a driver's seat, an exhaust pipe of the combustion heater extends rearward along a side surface below the passenger seat, and an exhaust pipe outlet is disposed between the front wheels and the rear wheels toward the side surface of the passenger seat; 2. An exhaust pipe structure for a combustion heater.

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