JPH08142642A - Air conditioner for vehicle - Google Patents

Abstract

PURPOSE: To provide the cooled air into the cabin without running the engine for traveling when a vehicle is parked. CONSTITUTION: A solar battery 50 is mounted on a vehicle, and a DC motor 51 to be driven with this solar battery 50 as the power source is provided. This DC motor 50 is interlockingly connected to a compressor 39 through a second electromagnetic clutch 57.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air conditioner.

[0002]

2. Description of the Related Art An example of a conventional vehicle air conditioner is shown in FIG.
Is shown in. Inside the casing 22 of the air conditioner 20 mounted on the vehicle 21, a blower 23, an evaporator 24, a heater
25, air mix damper 26, blowout mode switching damper 27,
28, an inside / outside air switching damper 29, etc. are built in. The condenser 40 is installed at a position such as a front portion of the vehicle that receives a running wind.

When the compressor 39 is driven from the running engine 37 via the electromagnetic clutch 38 during operation of the air conditioner 20, the gas refrigerant discharged from the compressor 39 is condensed by the condenser 40.
Then, it radiates heat to the outside air blown by the condenser fan 43 to be condensed and liquefied. This liquid refrigerant enters the receiver 41, separates the uncondensed gas refrigerant there, and then enters the expansion valve 42 where it undergoes adiabatic expansion. Next, this refrigerant enters the evaporator 24, evaporates and evaporates there, and then returns to the compressor 39.

Further, the engine cooling water, which has been heated by cooling the running engine 37, enters the heater 25 through the pump 45 and the on-off valve 46, and is passed through the heater 25 to lower the temperature. Return.

On the other hand, when the blower 23 rotates, outside air or vehicle interior air is drawn into the casing 22 from the outside air intake port 34 or the inside air intake port 35 selected by switching the inside / outside air switching damper 29, and the blower 23 attaches the outside air or the inside air. After being energized, it is cooled by passing through the evaporator 24.

The air cooled by the evaporator 24 is diverted by the air mix damper 26, and a part of the air is mixed by the heater 25.
In the process of flowing through the heater 25, the temperature of the engine 25 is raised by exchanging heat with the engine cooling water circulating in the heater 25, and then mixed with the remaining air bypassing the heater 25 to form conditioned air at a predetermined temperature. This conditioned air is supplied to the face air outlet 31, which is selected by switching the blowout mode switching dampers 27 and 28,
It is blown into the vehicle interior 35 from either one or two of the defrost outlet 32 and the foot outlet 33.

[0007]

In the above-described conventional vehicle air conditioner, when the vehicle is parked, the running engine 37 must be continuously operated in order to cool the vehicle interior. There is a problem that not only the air pollution but also the air pollution due to the exhaust gas increases.

[0008]

SUMMARY OF THE INVENTION The present invention has been invented to solve the above problems, and its gist is to provide a compressor driven by an engine for traveling of a vehicle through an electromagnetic clutch. In a vehicle air conditioner including: a solar cell mounted on a vehicle, a DC motor driven by the solar cell as a power source is provided, and the DC motor and the compressor are interlocked via a second electromagnetic clutch. It is in a vehicle air conditioner characterized by being connected.

[0009]

In the present invention, the compressor is driven by the traveling engine via the electromagnetic clutch when the vehicle is traveling. When the vehicle is parked, the driving engine is stopped and
The DC motor is driven by the current from the solar cell, and its power is transmitted to the compressor via the second electromagnetic clutch to drive it.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENT One embodiment of the present invention is shown in FIG. A solar cell 50 is mounted on the top plate of the vehicle.
A DC motor 51 driven by the power source is provided. When the vehicle is running, the power of the running engine 37 is the pulley 5
5, transmitted to the compressor 39 via the belt 56 and the electromagnetic clutch 38.

The motor 44 for driving the condenser fan 43 and the motor 47 for driving the blower 23 are provided with an on-vehicle battery 52.
Current is supplied through the contact D of the changeover switch 54 to drive them.

When the vehicle is parked, the running engine 37 is stopped, the electromagnetic clutch 38 is disengaged, and the second electromagnetic clutch 57 is disengaged.
Are contacted. Then, the changeover switch 54 is switched to the S point and turned off, and the switch 53 is turned on.
Then, the current generated in the solar cell 50 is supplied to the DC motor 51 and the motor 47 for driving the blower 23 via the switch 53 to drive them.

When the DC motor 51 is driven, this power is transmitted to the compressor 39 via the pulley 61, the belt 58 and the second electromagnetic clutch 57 to drive it, and at the same time, the condenser fan is passed through the belt 59 and the pulley 60. It is transmitted to 43 and drives this. At this time, the motor 44 simply functions as a bearing. Thus, the air conditioner exerts the cooling capacity to cool the inside of the vehicle compartment 35.

If the power generation capacity of the solar cell 50 is insufficient due to rain or cloudy weather, the changeover switch 54 may be switched to the point P to supplement the current from the vehicle battery 52.
Other configurations and operations are similar to those of the conventional one shown in FIG.

In the above embodiment, the running engine 37
The current from the solar cell 50 is supplied to the motor 47 for the blower 23 at the time of stop of the. It can also be rotated by supplying an electric current from the solar cell 50.

[0016]

According to the present invention, the driving engine is stopped when the vehicle is parked, the DC motor is driven by the current from the solar cell, and the power is transmitted to the compressor through the second electromagnetic clutch. And drive this. Therefore, even if the driving engine is stopped while the vehicle is parked, the vehicle interior can be cooled, so that the fuel consumption of the driving engine can be reduced and the air pollution due to the exhaust gas can be prevented.

[Brief description of drawings]

FIG. 1 is a schematic system diagram showing one embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of a conventional vehicle air conditioner.

[Explanation of symbols]

 37 Running engine 38 Electromagnetic clutch 39 Compressor 50 Solar cell 51 DC motor 57 Second electromagnetic clutch

Claims (1)

[Claims] 1. A vehicle air conditioner including a compressor driven by an engine for traveling of a vehicle through an electromagnetic clutch, wherein a solar cell is mounted on the vehicle, and a DC motor driven by using the solar cell as a power source. And an air conditioner for a vehicle, in which the DC motor and the compressor are interlocked and coupled via a second electromagnetic clutch.