JPS5934501Y2 - Vehicle cooling system - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a vehicle cooling system that uses an auxiliary engine as a power source and is mounted under the floor of a vehicle.

As a cooling system such as a bus, an auxiliary engine for driving the cooling system, a compressor condenser, an evaporator, and other equipment are attached to the frame, and an integrated unit is installed under the floor of a bus, etc., and the indoor air An auxiliary engine-driven integrated cooling system is generally used, which cools indoor air that flows into an evaporator section from an intake section and discharges the cooled air into a vehicle interior for cooling.

The present invention aims at reducing power and saving fuel by utilizing the exhaust energy of the auxiliary engine in the above-mentioned auxiliary engine-driven vehicle integrated cooling system. I will explain about it.

In Figure 1, 2 is an auxiliary engine, 3 is a cooling fan,
4 is a complexer, 5 is a radiator, 6 is a capacitor,
Reference numeral 7 indicates an evaporator, 9 indicates an evaporator 7a/, the auxiliary engine 2 and the compressor 3 are integrally connected and mounted on the frame 1 in a vibration-proof manner via anti-vibration rubber, etc., and a radiator is mounted at one end of the frame 1. 5 and a condenser 6 are installed, and an evaporator 7 and an evaporator fan 9 are installed at the other end of the frame 1 with the evaporator 7 and evaporator fan 9 built into the evaporator duct 8, and these are installed as an integral unit under the floor of a vehicle such as a bus. be done.

In the above-mentioned vehicle cooling system, conventionally, as shown in FIG. A V-belt 19 is hung between the pulleys 18, and an intermediate shaft 22' supported by a bearing 22 and the intermediate shaft 21 are connected to a pulley 17 provided on the evaporator fan 9 via the V-belt 16 and the pulley 15. ' are connected by a universal joint shaft 13 having a universal joint at both ends, and the rotation of the output shaft 2'' of the auxiliary engine is transmitted to and rotated by the evaporator 7a/9.

In the present invention, as shown in FIG. 1, an exhaust turbine 10 is provided in the exhaust manifold 2' of the auxiliary engine 2, and the output shaft 11 of the exhaust turbine 10 and the evaporator fan 9 are connected by a universal joint shaft 13, pulleys 15, 17, and The evaporator fan 9 is connected via a belt 16 or the like, and the evaporator fan 9 is driven to rotate using the exhaust energy of the auxiliary engine 2 as a power source.

Further, the other end of the universal joint shaft 13 whose one end is connected to the output shaft 11 of the exhaust turbine 10 is connected to the shaft 14' of the electric motor 14, and the pulley 15 is attached to the shaft 14'. During the operation of the air conditioner, the exhaust energy of the auxiliary engine 2 is extracted from the output shaft 11 of the exhaust turbine 10, as described above, and is transferred to the universal joint shaft 13, the electric motor shaft 14', and the pulleys 15, 1? The electric motor 1 rotates the evaporator fan 9 through the V-belt 16 and the like, and when the auxiliary engine is stopped and the cooling device is not used.
4 is driven to rotate the evaporator fan 9 to blow air into the vehicle interior at any time.

In this example, during cooling when the auxiliary engine 2 is driving, the electric motor 14 simply functions as a bearing that supports the shaft 14', and the evaporator fan 9 is rotationally driven by exhaust energy, and when the auxiliary engine is stopped When the electric motor 14 is rotated at any time to only blow air, the exhaust turbine 10 simply idles as a blade wheel, so it does not have much influence on the rotation of the electric motor 14, and does not affect power transmission devices such as clutches. is not particularly required.

However, if the load on the electric motor 14 becomes a problem, a clutch may be provided.

In the figure, 12 is a silencer.

As described above, according to the present invention, the power to the evaporator fan that was conventionally transmitted from the output shaft of the auxiliary engine is completely unnecessary, and the energy of exhaust gas is recovered and used as power, so fuel consumption is reduced. In addition, since the exhaust turbine is a blade wheel, torque fluctuations due to engine explosions or sudden accelerations when starting the auxiliary engine are significantly reduced and the rotation is smoothed, so V-belt tension fluctuations are reduced. The accompanying vibrations, noise, etc. are significantly reduced, and there is no need to increase the strength of the power transmission equipment, etc., making it possible to reduce the overall weight and extend the service life.

Furthermore, by providing an electric motor in the power transmission system to the evaporator fan, the rotation of the evaporator fan can be auxiliarily driven by the electric motor if necessary.
Moreover, it can bring about great practical effects, such as being able to only blow air.

[Brief explanation of the drawing]

FIG. 1 is an explanatory plan view showing an embodiment of the present invention, and FIG. 2 is an explanatory plan view showing a conventional device. 1... Frame, 2... Auxiliary engine, 4... Compressor, 5... Radiator, 6... Capacitor, 7... ... Evaporator, 9... Evaporator fan, 10.
...Exhaust turbine, 11...Output shaft, 1
3...Universal joint shaft, 14...Electric motor, 14'...Shaft, 15, 17...Pulley, 16...V belt.

Claims (1)

[Scope of utility model registration request] In a cooling device driven by an auxiliary engine as a power source, the output shaft of the auxiliary engine and a compressor are connected to drive the compressor, and an exhaust turbine is provided in the exhaust system of the auxiliary engine, and the exhaust turbine is connected to the output shaft of the auxiliary engine. A vehicle cooling system characterized by having a structure in which an output shaft of a turbine and an evaporator fan are connected to drive the evaporator fan, and an electric motor is provided in a connection system between the exhaust turbine output shaft and the evaporator fan.