JPH06219147A - Air conditioner for vehicle - Google Patents

Abstract

PURPOSE:To dispense with installing space of an air conditioner in an instrument panel, and improve an air-conditioning effect by arranging an evaporator, a fan and a warm water heater to constitute a refrigerating device by being mounted on the vehicle, respectively on the roof of a vehicle. CONSTITUTION:An evaporator 5 and a fan 7 are arranged in a casing 20 added to the roof of a vehicle. On the other hand, a heater unit 31 housing a warm water heater 10 and a fan 12 is arranged in an instrument panel 30 of the vehicle. Vehicle inside air sucked in the casing 20 from a suction port 21 by the fan 7 is blown off into the vehicle from a blowoff port 22 as cooling air after being cooled by the evaporator 5. On the other hand, vehicle inside air sucked in a heater unit 31 from a duct 32 by the fan 12 is blown off into the vehicle from a blowoff port 33 as hot air after being heated by a warm water heater 10. Thereby, installing space of an air conditioner in the instrument panel 30 can be dispensed with, and an air-conditioning effect can be improved.

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 In a conventional vehicle air conditioner, an evaporator and a fan that constitute a refrigeration system, and a hot water heater that uses cooling water of an engine of the vehicle as a heat source are installed in an instrument panel of the vehicle. The air sucked from the inside of the vehicle by the fan is heat-exchanged by an evaporator to be cooled, or the conditioned air heated by being heat-exchanged by a hot water heater is blown into the vehicle.

[0003]

In the above conventional air conditioner for a vehicle, a wide space volume in the instrument panel is required to install air conditioners such as an evaporator, a fan, and a hot water heater. In addition to being restricted by the design and function of the instrument panel, the space in the driver's seat is narrowed, resulting in poor habitability and installation of air conditioning equipment in the instrument panel in such a narrow space. Had the drawback of not being easy.

The present invention solves the above-mentioned drawbacks of the prior art and eliminates or reduces the volume required for the air conditioner in the instrument panel to ease restrictions on the design of the panel, and further to reduce the driver's seat. An object of the present invention is to provide an air conditioning system for a vehicle, which can secure a wide space, improve habitability, and facilitate installation work of air conditioning equipment.

[0005]

SUMMARY OF THE INVENTION The present invention solves the above problems and relates to a vehicle air conditioner having the following features.

(1) An evaporator and a fan, which constitute a refrigerating apparatus mounted on a vehicle, and a hot water heater, which uses cooling water of an engine of the vehicle as a heat source, are installed on the roof of the vehicle.

(2) An evaporator and a fan, which constitute a refrigeration system and are installed in the vehicle, are installed on the roof of the vehicle, and a hot water heater and a fan, which use the cooling water of the engine of the vehicle as a heat source, are installed in the instrument panel.

[0008]

In the invention described in the above item (1), the evaporator, the fan, and the hot water heater are installed on the roof of the vehicle so that conditioned air cooled or heated by the evaporator or the hot water heater is blown out from the ceiling. As a result, the space volume required for the air conditioner in the instrument panel can be eliminated, and as a result, a large space for the driver's seat can be secured.

In the invention described in the above item (2), the evaporator and the evaporator fan are installed on the roof of the vehicle, and the hot water heater and the heater fan are installed in the instrument panel, so that the cool air cooled by the evaporator is installed on the ceiling. From the instrument panel or hot air heated by a hot water heater. According to the present invention, the space volume required for the air conditioner in the instrument panel can be reduced, and as a result, the driver's seat space can be made wider than before.

[0010]

1 is a system diagram of a vehicle air conditioner according to a first embodiment of the present invention, and FIG. 2 is a partial sectional view of a vehicle in which the air conditioner of the same embodiment is installed. In FIG. 1, a compressor 1, a condenser 2, a receiver 3, a throttle device 4 such as a capillary tube, and an evaporator 5 driven by an engine (not shown) are connected in this order by a refrigerant pipe 6 to form a refrigerating device. Refrigerant circulates as indicated by the solid arrow in the figure. Further, the radiator 8, the pump 9 and the hot water heater 10 are connected by the hot water pipe 11, so that the engine cooling water stored in the radiator 8 by the pump 9 circulates as indicated by the broken line arrow in FIG. There is. In FIG. 2, a casing 20 is attached to the roof of the vehicle, and the hot water heater 10, the evaporator 5, and the fan 7 are installed in series in the casing 20. A suction port 21 and a blowout port 22 are provided on a ceiling surface forming a part of the casing 20. In addition, 30 in FIG. 2 is an instrument panel. The white arrows indicate the flow of air.

In this apparatus, the air in the vehicle sucked into the casing 20 from the suction port 21 by the fan 7 is cooled by exchanging heat with the refrigerant flowing through the evaporator 5 in the process of passing through the evaporator 5. Alternatively, it is heated by exchanging heat with the hot water flowing through the hot water heater 10 in the process of passing through the hot water heater 10, and becomes conditioned air and is blown out into the vehicle from the air outlet 22.

Therefore, in the air conditioner of this embodiment,
The warm water heater 10, the evaporator 5, and the air conditioner for the fan 7 are installed in the casing 20 provided on the roof of the vehicle so that conditioned air is blown out from the ceiling. Therefore, the instrument panel 30 required for the conventional air conditioner is used. The internal space volume is unnecessary. As a result, it is possible to secure a large driver's seat space, improve habitability, and install the air conditioner on the roof of the vehicle, which facilitates the work.

FIG. 3 is a system diagram of a vehicle air conditioner according to a second embodiment of the present invention, and FIG. 4 is a partial sectional view of a vehicle in which the air conditioner of the same embodiment is installed. In FIG. 4, a casing 20 is attached to the roof of the vehicle, and the evaporator 5 and the fan 7 are installed in the casing 20. A heater unit 31 that accommodates the hot water heater 10 and the fan 12 is installed in an instrument panel 30 of the vehicle, and a duct 32 that communicates with the heater unit 31 is provided so as to open to the rear of the driver's seat. In addition, the instrument panel 30 has a blowout port 33.
Is provided. The other structure is the first shown in FIG. 1 and FIG.
Similar to the embodiment, corresponding members are designated by the same reference numerals.

In the present apparatus, the air in the vehicle sucked into the casing 20 from the suction port 21 by the fan 7 is cooled in the process of passing through the evaporator 5 and becomes cold air and is blown out into the vehicle from the air outlet 22. On the other hand, the air in the vehicle sucked into the heater unit 31 from the duct 32 by the fan 12 is heated in the process of passing through the hot water heater 10, becomes hot air, and is blown into the vehicle from the air outlet 33.

Therefore, in the air conditioner of this embodiment, since the evaporator 5 and the fan 7 are provided in the casing 20 provided in the roof of the vehicle, the air conditioner required in the instrument panel is provided. The volume can be made smaller than before. As a result, a large space for the driver's seat can be secured, and habitability can be improved. Further, the installation work of the air conditioner becomes easy. In this embodiment, hot air is blown from the instrument panel to the lower part of the room and cold air is blown from the ceiling, so that the driver's head cold foot heat can be achieved.

[0016]

According to the vehicle air conditioner described in the means (1) of the present invention, an evaporator and a fan that constitute a refrigerating device mounted on the vehicle, and a hot water heater that uses the cooling water of the engine of the vehicle as a heat source are provided. Since it is installed on the roof of the vehicle, the space volume conventionally required for installing the air conditioner in the instrument panel becomes unnecessary. As a result, a large space for the driver's seat can be secured, habitability can be improved, and installation work of the air conditioner becomes easy.

In the vehicle air conditioner according to the means (2) of the present invention, an evaporator and a fan, which are installed in the vehicle and constitute a refrigeration system, are installed on the roof of the vehicle, and cooling water of the engine of the vehicle is used as a heat source. Since the hot water heater and the fan are installed in the instrument panel, the space volume required for installing the air conditioner in the instrument panel can be made smaller than before. This makes it possible to secure a large driver's seat space, improve habitability, and facilitate installation work of air conditioning equipment.
In addition, warm air from the instrument panel to the lower part of the room,
By blowing out cool air from the ceiling, the driver's cold head heat can be achieved.

[Brief description of drawings]

FIG. 1 is a system diagram of a vehicle air conditioner according to a first embodiment of the present invention.

FIG. 2 is a partial cross-sectional view of a vehicle in which the air conditioner of the embodiment is installed.

FIG. 3 is a system diagram of a vehicle air conditioner according to a second embodiment of the present invention.

FIG. 4 is a partial cross-sectional view of a vehicle in which the air conditioner of the embodiment is installed.

[Explanation of symbols]

 1 Compressor 2 Condenser 3 Receiver 4 Throttle device 5 Evaporator 6 Refrigerant pipe 7 Fan 8 Radiator 9 Pump 10 Hot water heater 11 Hot water pipe 12 Fan 20 Casing 21 Suction port 22 Blowout port 30 Instrument panel 31 Heater unit 32 Duct 33 Blowout port

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuhiko Hirao No. 1 Takamichi, Iwazuka-machi, Nakamura-ku, Nagoya City Nagoya Research Laboratory, Mitsubishi Heavy Industries, Ltd. (72) Masatoshi Mitsui No. 1 Takamichi, Iwatsuka-machi, Nakamura-ku, Nagoya Mitsubishi Heavy Industries, Ltd. Nagoya Research Institute (72) Inventor Hideto Noyama 1 Takamichi, Iwazuka-machi, Nakamura-ku, Nagoya City Mitsubishi Heavy Industries Ltd. Nagoya Research Institute

Claims (2)

[Claims] 1. An air conditioner for a vehicle, comprising: an evaporator and a fan that are installed in the vehicle to constitute a refrigeration system; and a hot water heater that uses a cooling water of an engine of the vehicle as a heat source, on a roof of the vehicle. 2. An evaporator and a fan, which constitute a refrigerating apparatus mounted on a vehicle, are installed on a roof of the vehicle, and a hot water heater and a fan, which use a cooling water of an engine of the vehicle as a heat source, are installed in an instrument panel. A vehicle air conditioner.