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Vehicle air-conditioning apparatus

a technology for air-conditioning apparatus and vehicles, which is applied in the direction of lighting and heating apparatus, machine operation mode, transportation and packaging, etc., can solve the problems of difficulty in using the internal combustion engine as a heat source for air-conditioning (temperature regulation) of the compartment, and achieve the effect of avoiding the change in the structure of the air-conditioning apparatus from the conventional structure, reducing the amount of heat for heating the coolant, and effectively heating

Inactive Publication Date: 2013-12-19
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a way to use a Peltier element to cool air in a vehicle. Normally, this technology would require significant changes to the structure of a conventional air-conditioning system, which would increase costs. The patent proposes a solution to this problem. The technical effect is to enable air-conditioning in vehicles that previously could not use it, without increasing production costs.

Problems solved by technology

However, there are an increasing number of types of vehicles in which it is difficult to utilize the internal combustion engine as a heat source for air-conditioning (temperature regulation) of the compartment.

Method used

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  • Vehicle air-conditioning apparatus
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first embodiment

[0031]An air-conditioning apparatus for a hybrid vehicle according to a first embodiment of the present invention will now be described with reference to FIGS. 1 to 7.

[0032]The hybrid vehicle includes, as drive sources, a motor generator and an internal combustion engine, and switches the drive source to be used according to a driving condition or driving requirement. More specifically, the hybrid vehicle uses only the motor generator as the drive source, uses only the internal combustion engine as the drive source, or uses both the internal combustion engine and the motor generator as the drive source.

[0033]The air-conditioning apparatus for the hybrid vehicle described above is provided with a cooling device 2 cooling air sent to a passenger compartment 1 as illustrated in FIG. 1. The cooling device 2 is a vapor compression heat pump. The cooling device 2 includes a compressor 3 compressing refrigerant, a condenser 4 that cools the refrigerant, which has been compressed and heated...

second embodiment

[0068]A second embodiment will now be described with reference to FIGS. 8 to 13.

[0069]As illustrated in FIG. 8, a coolant circuit 17 in an air-conditioning apparatus according to the present embodiment is different from the one in the first embodiment. The coolant circuit 17 is provided independent of the circulation circuit 8. The coolant circuit 17 cools various electric devices such as the motor generator 21 and the electronic device 22 including the inverter. The motor generator 21 functions as the drive source of the hybrid vehicle, and it is controlled by the electronic control device 20. The coolant circuit 17 includes a heat exchanger 23, which transfers heat between the coolant circulating in the circuit and the ambient air.

[0070]The different part from the first embodiment in the first to fifth modes of the air-conditioning apparatus will be described. The first to fifth modes of the air-conditioning apparatus are illustrated in FIGS. 9 to 13. As understood from these draw...

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Abstract

An air conditioning apparatus cools air sent to a passenger compartment by using a cooling machine which is a vapor compression heat pump. Heating of the air may be implemented by utilizing the heat of an internal combustion engine or via a Peltier element. As the cooling machine, a cooling machine provided in a conventional air conditioning apparatus may be utilized, thus eliminating the need for significant modification of the structure of the air conditioning apparatus. The air sent to the passenger compartment can be heated with the Peltier element so that the passenger compartment can be air-conditioned (heated), even when it is difficult to utilize the internal combustion engine as a heat source for air-conditioning the passenger compartment, such as when the vehicle is travelling solely on the motor generator. Thus, the passenger compartment can be air-conditioned in vehicles in which it is difficult to utilize the internal combustion engine as a heat source for air-conditioning the passenger compartment, without requiring significant structural changes.

Description

CROSS REFERENCE TO RELATED APPLICATION [0001]This is a national phase application based on the PCT International Patent Application No. PCT / JP2011 / 055132 filed on Mar. 4, 2011, the entire contents of which are incorporated herein by reference.FIELD OF THE DISCLOSURE [0002]The present invention relates to a vehicle air-conditioning apparatus.BACKGROUND OF THE DISCLOSURE [0003]In a vehicle having an internal combustion engine, such as an automobile, the temperature in the passenger compartment is adjusted by cooling air sent to the compartment by a cooling device, or heating the air by use of heat of the internal combustion engine. However, there are an increasing number of types of vehicles in which it is difficult to utilize the internal combustion engine as a heat source for air-conditioning (temperature regulation) of the compartment. Such vehicles include an electric vehicle that does not have the internal combustion engine but only has a motor as a drive source, and a hybrid veh...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F25B21/02B60L50/16
CPCF25B21/02B60H1/004B60H1/00478B60H1/00899
Inventor MORITA, MASAKI
Owner TOYOTA JIDOSHA KK