JPH01156126A - Heating apparatus - Google Patents

Abstract

PURPOSE:To enable rapid heating in a compartment by providing a blower compressor adapted to compress air while sucking to continuously discharge temperature-up air into a compartment and driving the blower compressor by driving means using exhaust gas as a power source. CONSTITUTION:There is provided a blower compressor 9 rotatably accommodated in a casing 13, which has a turbine 11 and a blower 12 disposed on a common rotating shaft 10. An inlet port 14 and an exhaust port 15 for exhaust gas are formed on the turbine 11 side of the casing 13, and an inlet port 16 and a discharge port 17 for air are formed on the blower 12 side thereof. One end 20 of an air introduction passage 19, the other end of which is connected to an air cleaner, is connected to the inlet port 16 for air, and one end 23 of a heating air supply pipe 22, the other end 21 of which is opened to a compartment 1, is connected to the discharge port 17. At the time of heating, an open- and-close valve 4 is closed and an open-and-close valve 8 is opened, the turbine 11 is rotated by exhaust gas to drive the blower 21, high-temperature air discharged from the discharge port 17 is fed into the compartment 1 to accomplish rapid heating.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a heating device that sucks in air inside a vehicle interior, compresses it, and supplies it again to a single compartment as high-temperature air, thereby enabling rapid heating of the vehicle interior.

[Prior Art] In addition to warming up the engine by heating the intake air, a burner 31 is installed in the middle of the intake pipe 30 as shown in FIG. 3 as a proposal to warm up the passenger compartment when necessary. A heat exchanger 32 is disposed in the intake pipe line 30 between 3. ``Engine warm-up device'' proposed by the present applicant configured with a valve 34 (
Japanese Utility Model Application No. 60-73866) is known.

[Problems to be solved by the invention] The above proposal is configured so that when the switching valve is opened, the interior of the vehicle is heated by the medium to be heated for indoor heating passing through the piping, and when the intake air is heated, that is, when starting at a low temperature, The burner heats the heat exchanger to promote intake air heating, and when the engine goes into DI m, the burner is stopped and the heat exchanger is configured to heat the vehicle interior, intake air, or both. ing.

However, in order to properly heat the conductor during low-temperature starts, etc., it is sufficient to increase the heating capacity of the burner, but the capacity of the mouth burner naturally has a limit due to the limit on the amount of oxygen required to be taken into the engine. Therefore, it has been desired to develop a heating system that can quickly heat the vehicle interior even when starting at low temperatures.

[Means for Solving the Problems] The present invention aims to solve the above problems, and provides a blower compressor that sucks in air, compresses it, and continuously discharges heated air into a passenger compartment, and this blower compressor. A heating device is constructed from a driving means for driving the heating device.

[Operation] When the blower compressor is driven by the drive means, the blower compressor sucks in air, compresses it, and discharges the compressed air as heated air to the single room again. Therefore, the vehicle interior is heated.

[Embodiment] A preferred embodiment of the present invention will be described below based on the accompanying drawings.

In Fig. 1, 1 is the passenger compartment, 2 is the engine, and 3 is the engine 2.
This is the exhaust passage.

One end 6 of an exhaust bypass passage 5 is connected downstream of the exhaust passage 3 to the upstream side of an on-off valve 4 that opens and closes the exhaust passage 3; An on-off valve 8 for opening and closing is provided.

Now, the blower compressor 9 in this embodiment has a rotating shaft 1
A turbine 1'1, a blower 12, and a rotary shaft 1o, which are coaxially connected at 0, are rotatably housed in a single casing 13, and an exhaust gas inlet 14 and an exhaust outlet 15 are provided on the turbine 11 side of the casing 13. , an air suction port 16 and an air discharge port 17 are formed on the blower 12 side of the casing '13.

An air cleaner (
One end 20 of one air introduction passage via (not shown)
A heated air supply pipe 22 with one end 21 open to the vehicle compartment 1 is connected to the discharge port 17 . ! End 23 is connected.

That is, when heating the vehicle compartment 1, the on-off valve 4 is operated to open the on-off valve 8, and when exhaust gas is supplied to the turbine 11, the blower 12, which is rotated together with the turbine 1'1, moves into the air introduction passage. Air is sucked in from one and compressed, and high-temperature air discharged from a discharge port 17 is sent into the passenger compartment 1 via a heated air supply pipe 22 to heat the passenger compartment 1.

Here, in order to improve heating efficiency, the air introduction passage 19 is installed with its other end 24 open to the vehicle interior 1, and the air in the vehicle interior 1 is mixed with air for heating by the blower 12. By doing so, quick heating of the vehicle compartment 1 becomes possible.

Therefore, the exhaust bypass passage 5, the on-off valve 4.8,
The turbine 11 constitutes the drive means 26 in this embodiment.

By the way, the above blower compression 1i! The heated air generation capacity of No. 9 is determined by appropriately designing the shape of the blower 12 and the opening degree of the discharge port 17 of the casing 13 so as to discharge heated air at an appropriate temperature at the idling speed of the engine 2. (For reference, we have confirmed that a diesel engine with a displacement of 7 for a 4 ton car can discharge heated air of approximately 150 to 160 m'/h when operated at idle speed.) Focusing only on the quick heating performance of the heating bag 2 configured as shown in FIG. 2, as shown in the flow chart of FIG.
When switching to a conventional heating device (defroster) that uses the cooling water of the radiator when the cooling water temperature of the engine 2 rises, a temperature sensor is provided in the radiator etc., and the detected temperature of this temperature sensor is approximately 60°C. The on-off valve 8 is configured to close when the temperature reaches .degree.

With this configuration, first, by operating the blower compressor 9, the engine 2 quickly raises the cooling water temperature according to the internal EGR effect due to its operation and the load performed by the pumping work. Switching between the engine and the heating system (defroster) can be done quickly and without any discomfort for the driver, and since the blower compressor 9 does not operate during normal driving, there is no load on the engine 1 equivalent to heating. Drive suitably?
)+ will be applied.

The driving means 26 may be a separate device that drives the blower 12 by turning the crank of the engine 2 (not shown) and the rotating shaft 10 into a gear train (not shown) with an appropriate gear ratio. Of course, it is also possible to adopt a mechanism in which the gear train is directly driven by a drive motor, or a mechanism in which the rotational shaft is directly driven by a drive motor that can limit the number of rotations.

In addition, in order to make the pressure ratio before and after the blower 12 appropriate,
It goes without saying that the blower 12 and the casing 13 are designed, and in order to increase the temperature of the heated air, two or more of the blower compressors 9 may be installed in series () to perform multi-stage compression. Furthermore, the blower compression was designed with a margin in mind to create high-temperature heated air in advance! ! 1, an outside air introduction passage (not shown) that is opened and closed by an on-off valve (not shown) is provided in one of the air introduction passages, and the inside of the vehicle compartment 1 is heated with outside air passing through this outside air introduction passage. , outside air and small room 1
It may be configured such that the temperature can be controlled in stages by mixing the internal air.

Furthermore, since the heated air discharged from the discharge port 17 of the blower compressor 9 and expanded becomes turbulent after expansion, it must be confirmed that it maintains high energy and has a heat capacity of 95% of that before expansion. Therefore, by insulating the outer surface of the heated air supply pipe 22 or configuring the heated air supply pipe 22 itself with a heat insulating material, it is possible to maintain thermal efficiency and reliably improve the heating efficiency in the passenger compartment 1. can.

[Effects of the Invention] As is clear from the above explanation, the present invention exhibits the excellent effect of quickly raising the temperature of the air in the vehicle interior.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing a preferred embodiment of the present invention, Fig. 2 is a flowchart showing the control contents of a heating engine 5lii, and Fig. 3 is a schematic diagram showing a conventional engine warm-up device. . In the figure, 1 is a vehicle compartment, 2 is an engine, 3 is an exhaust passage, and 9 is a blower compressor. Patent applicant Nobuo Kinuya, patent attorney representing Isuzu Motors Co., Ltd.

Claims (2)

[Claims] (1) A heating device characterized by comprising a blower compressor that sucks in air, compresses it, and continuously discharges heated air into a passenger compartment, and a drive means that drives the compressor. (2) The above-mentioned claim 1, wherein the driving means comprises a turbine that drives the compressor according to the flow rate of exhaust gas, and an exhaust bypass passage having an on-off valve that guides the exhaust gas to the turbine. Heating device as described in section.