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Thermodynamic cycle system for moving vehicle

a technology of moving vehicle and cycle system, which is applied in the direction of battery/fuel cell control arrangement, domestic cooling apparatus, lighting and heating apparatus, etc., can solve the problems of inability to lower the temperature of the cooling medium, the air conditioning system set up on the moving vehicle is not equipped, etc., to enhance the energy-saving effect of indoor air conditioning, enhance the adjustment function, and minimize the effect of energy consumption

Inactive Publication Date: 2011-03-31
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a moving vehicle thermodynamic cycle system that allows for the energy-saving implementation of indoor air conditioning and enhancement of the adjustment functionality for the temperature of the heat-liberation component. This is achieved by separating the primary-side thermodynamic cycle circuit for performing heat exchange with the outdoor side and the secondary-side thermodynamic cycle circuit for performing heat exchange with the indoor side and the heat-liberation component side. The system utilizes the heat-liberation component for indoor air conditioning, minimizing the energy needed for the process.

Problems solved by technology

The air-conditioning system set up on the moving vehicle is not equipped with an energy source which is specifically dedicated to the air-conditioning system itself.
In the heat exchange between the air and the cooling medium, however, the temperature of the cooling medium cannot be lowered down to a temperature which is lower than the temperature of the air.
As a result, if, e.g., at the high-temperature time in summer, the heat-liberation amount (i.e., temperature) of the heat-liberation component has increased, it becomes increasingly difficult to permit the temperature of the heat-liberation component to come closer to the appropriate temperature, at which the heat-liberation component can operate with a high efficiency.

Method used

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  • Thermodynamic cycle system for moving vehicle
  • Thermodynamic cycle system for moving vehicle
  • Thermodynamic cycle system for moving vehicle

Examples

Experimental program
Comparison scheme
Effect test

1st embodiment

[0094]Referring to FIG. 1 through FIG. 8, the explanation will be given below regarding a first embodiment of the thermodynamic cycle system set up on the EV 1000.

[0095]FIG. 1 through FIG. 8 illustrate the configuration of the thermodynamic cycle system set up on the EV 1000.

[0096]Incidentally, FIG. 2 illustrates, with the solid line, a refrigerant pipe 12 (i.e., primary-side thermodynamic cycle circuit) through which a refrigerant such as HFC-134a flows. Also, FIG. 2 illustrates, with the dotted lines, heat-transferring medium pipes 13a and 13b (i.e., secondary-side thermodynamic cycle circuit) through which liquid-state cooling agents (i.e., heat-transferring media) such as water or antifreeze solution flow.

[0097]The thermodynamic cycle system set up on the EV 1000 includes a thermodynamic cycle circuit. As illustrated in FIG. 1 and FIG. 2, this thermodynamic cycle circuit is separated into the primary-side thermodynamic cycle circuit for performing heat exchange with an outdoor s...

2nd embodiment

[0143]Referring to FIG. 9 and FIG. 10, the explanation will be given below concerning a second embodiment of the thermodynamic cycle system set up on the EV 1000.

[0144]The present embodiment is a modified embodiment of the first embodiment. Concretely, the correspondence relationship between the intermediate heat exchangers 6a and 6b and the first and second heat-transferring systems is a relationship which is inversed to the one in the first embodiment. Namely, the cooling liquid in the first heat-transferring system and the refrigerant in the refrigeration cycle system are heat-exchanged with each other by the intermediate heat exchanger 6b which is deployed between the pressure reducers 3a and 3b. Also, the cooling liquid in the second heat-transferring system and the refrigerant in the refrigeration cycle system are heat-exchanged with each other by the intermediate heat exchanger 6a which is deployed between the pressure reducer 3a and the four-way valve 2.

[0145]The other confi...

3rd embodiment

[0148]Referring to FIG. 11, the explanation will be given below regarding a third embodiment of the thermodynamic cycle system set up on the EV 1000.

[0149]The present embodiment is an improved embodiment of the second embodiment. In the present embodiment, an outdoor heat exchanger 14 is provided on the bypass pipe 13c. The outdoor heat exchanger 14 is deployed in a side-by-side manner with the outdoor heat exchanger 4 such that the exchanger 14 is deployed on the upstream side of the outdoor heat exchanger 4 with reference to the flow of the air sent by the fan 8a. Based on this deployment, the outdoor heat exchanger 14 performs the heat exchange between the air sent by the fan 8a and the cooling liquid flowing through the bypass pipe 13c. Also, in the present embodiment, the three-way valve 9b is deployed between the pump 7a and the intermediate heat exchanger 6b. Thanks to this deployment of the valve 9b, it is made possible to cause the cooling liquid before being heat-exchanged...

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Abstract

A thermodynamic cycle system for a moving vehicle, including a refrigeration cycle system through which a refrigerant flows, a first heat-transferring system through which a heat-transferring medium flows, the heat-transferring medium being used for adjusting temperatures of heat-liberation components, a second heat-transferring system through which a heat-transferring medium flows, the heat-transferring medium being used for adjusting an indoor air state, an intermediate heat exchanger provided between the refrigeration cycle system and the first heat-transferring system, an intermediate heat exchanger provided between the refrigeration cycle system and the second heat-transferring system, an indoor heat exchanger provided in the first heat-transferring system, and an indoor heat exchanger provided in the second heat-transferring system.

Description

BACKGROUND OF THE INVENTION[0001]The present invention relates to a thermodynamic cycle system set up on a moving vehicle.[0002]As conventional technologies concerning a thermodynamic cycle system set up on a moving vehicle, there have been known technologies disclosed in, e.g., JP-A-2008-230594 and JP-A-8-258548. In JP-A-2008-230594, there is disclosed the technology for enhancing the heating capability as follows: An electric heater is provided on the refrigeration cycle system. Then, the heat occurring in a heating cycle of the refrigeration cycle and the heat generated by the electric heater are co-used simultaneously, thereby enhancing the heating capability. Also, in JP-A-8-258548, there is disclosed the technology for enhancing the heating capability as follows: The heat exchange is performed between a cooling liquid, which receives the heat released from a heat-liberation component, and a refrigerant of the refrigeration cycle. In this way, the heat released from the heat-li...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F25D31/00F25B1/00F25B41/00
CPCB60H1/00278B60H2001/00928B60H2001/00307B60H1/00392B60L1/003B60L2200/18B60L2200/36B60L2240/34B60L2240/36B60L2240/425B60L2240/525B60L2240/545B60L58/26B60L58/27B60H1/32281Y02T10/64Y02T10/70
Inventor ARAI, MASATSUGUNASU, SHINGOMATSUSHIMA, HIROAKIKOTANI, MASANAOKOMATSU, TOMOHIROSEKIYA, SACHIO
Owner HITACHI LTD
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