Heat Cycle System for Mobile Object

• US 20120222441A1
• Filed: 08/25/2010
• Published: 09/06/2012
• Est. Priority Date: 11/30/2009
• Status: Abandoned Application

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Sawada, Itsuro, Osaka, Tadashi, Imanishi, Yuto, Sekiya, Sachio
• Application Number:
  US13/388,707
• Publication Number:
  US 20120222441A1
• Time in Patent Office: Days
• US Class Current: 62/238.1
• CPC Class Codes: B60H 1/00392 for electric vehicles having only electric drive means
• CPC Class Codes: B60H 1/00907 where the flow direction of the refrigerant changes and an evaporator becomes condenser
• CPC Class Codes: B60H 1/32284 comprising two or more secondary circuits, e.g. at evaporator and condenser side
• CPC Class Codes: B60H 2001/00928 comprising a secondary circuit
• CPC Class Codes: B60H 2001/00935 comprising four way valves for controlling the fluid direction
• CPC Class Codes: F25B 25/005 using primary and secondary systems
• CPC Class Codes: F25B 5/02 arranged in parallel

Abstract

A heat cycle system for a mobile object includes: a refrigeration cycle system 10 in which a refrigerant flows; a first heat transfer system 20 in which a heat medium that controls a temperature of a heat-generating body 2 flows; a second heat transfer system 30 in which a heat medium that controls a state of air in an interior of the mobile object flows; a first intermediate heat exchanger 40 which is provided between the refrigeration cycle system 10 and the first heat transfer system 20 and in which the refrigerant and the heat medium exchange heat therebetween; a second intermediate heat exchanger 50 which is provided between the refrigeration cycle system 10 and the second heat transfer system 30 and in which the refrigerant and the heat medium exchange heat therebetween; a first interior heat exchanger 23 which is provided in the first heat transfer system 20 and in which air taken into the interior of the mobile object and the heat medium exchange heat therebetween; a second interior heat exchanger 32 which is provided in the second heat transfer system 30 and in which air taken into the interior of the mobile object and the heat medium exchange heat therebetween; and a reservoir tank 24 that controls pressures in flow channels in which the heat media in the first and second heat transfer systems 20 and 30, respectively, flow; wherein the reservoir tank 24 is provided in common for the first and second heat transfer systems 20 and 30.

Claims

1. A heat cycle system for a mobile object, comprising:

a refrigeration cycle system in which a refrigerant flows;

a first heat transfer system in which a heat medium that controls a temperature of a heat-generating body flows;

a second heat transfer system in which a heat medium that controls a state of air in an interior of the mobile object flows;

a first intermediate heat exchanger which is provided between the refrigeration cycle system and the first heat transfer system and in which the refrigerant and the heat medium exchange heat therebetween;

a second intermediate heat exchanger which is provided between the refrigeration cycle system and the second heat transfer system and in which the refrigerant and the heat medium exchange heat therebetween;

a first interior heat exchanger which is provided in the first heat transfer system and in which air taken into the interior of the mobile object and the heat medium exchange heat therebetween;

a second interior heat exchanger which is provided in the second heat transfer system and in which air taken into the interior of the mobile object and the heat medium exchange heat therebetween; and

a reservoir tank that controls pressures in flow channels in which the heat media in the first and second heat transfer systems, respectively, flow;

wherein

the reservoir tank is provided in common for the first and second heat transfer systems.

2. A heat cycle system for a mobile object according to claim 1, wherein

the reservoir tank is connected with a heat medium flow channel for the first heat transfer system and a heat medium flow channel for the second heat transfer system, respectively.

3. A heat cycle system for a mobile object according to claim 1, wherein

the reservoir tank is provided in either one of the heat medium flow channel for the first heat transfer system or the heat medium flow channel for the second heat transfer system, and

the heat medium flow channel for the first heat transfer system and the heat medium flow channel for the second heat transfer system communicate through a communication path.

4. A heat cycle system for a mobile object according to claim 1, further comprising:

a drainage mechanism that discharges the heat media from the heat medium flow channel for the first heat transfer system and the heat medium flow channel for the second heat transfer system, wherein

the drainage mechanism is provided in common between the first heat transfer system and the second heat transfer system.

5. A heat cycle system for a mobile object according to claim 1, further comprising:

an exterior heat exchanger, provided in the first heat transfer system, that exchanges heat between the heat medium and exterior air.

6. A heat cycle system for a mobile object, comprising:

a refrigeration cycle system in which a refrigerant flows;

a first heat transfer system in which a heat medium that controls a temperature of a heat-generating body flows;

a second heat transfer system in which a heat medium that controls a state of air in an interior of the mobile object flows;

a first intermediate heat exchanger which is provided between the refrigeration cycle system and the first heat transfer system and in which the refrigerant and the heat medium exchange heat therebetween;

a second intermediate heat exchanger which is provided between the refrigeration cycle system and the second heat transfer system and in which the refrigerant and the heat medium exchange heat therebetween;

a first interior heat exchanger which is provided in the first heat transfer system and in which air taken into the interior of the mobile object and the heat medium exchange heat therebetween;

a second interior heat exchanger which is provided in the second heat transfer system and in which air taken into the interior of the mobile object and the heat medium exchange heat therebetween; and

a flow channel connection control unit that controls connection of a flow channel of the first heat transfer system and a flow channel of the second heat transfer system such that a heat medium fed to the heat-generating body is flown through the first and second intermediate heat exchangers in series.

7. A heat cycle system for a mobile object according to claim 6, wherein

when a state is reached where an amount of heat exchange between the heat medium fed to the heat-generating body and the refrigerant is to be made larger than an amount of heat exchange between a heat medium fed to the heat-generating body and the refrigerant at the first intermediate heat exchanger, the flow channel connection control unit controls the connection between the flow channels such that a heat medium fed to the heat-generating body flows through the first and second intermediate heat exchangers in series.

10. A heat cycle system for a mobile object according to claim 6, further comprising:

a reservoir tank that controls respective pressures in flow channels in which the heat media of the first and second heat transfer systems flow, wherein

the reservoir tank is provided in common to the first and second heat transfer systems.

11. A heat cycle system for a mobile object according to claim 6, further comprising:

a drainage mechanism that discharges the heat medium from the heat medium flow channel for the first heat transfer system and the heat medium flow channel for the second heat transfer system, wherein

the drainage mechanism is provided in common between the first heat transfer system and the second heat transfer system.

12. A heat cycle system for a mobile object according to claim 6, further comprising:

an exterior heat exchanger, provided in the first heat transfer system, that exchanges heat between the heat medium and exterior air.

8. A heat cycle system for a mobile object, comprising:

a refrigeration cycle system in which a refrigerant flows;

a first heat transfer system in which a heat medium that controls temperatures of at least two heat-generating bodies flows;

a second heat transfer system in which a heat medium that controls a state of air in an interior of the mobile object flows;

a first intermediate heat exchanger which is provided between the refrigeration cycle system and the first heat transfer system and in which the refrigerant and the heat medium exchange heat therebetween;

a second intermediate heat exchanger which is provided between the refrigeration cycle system and the second heat transfer system and in which the refrigerant and the heat medium exchange heat therebetween;

a first interior heat exchanger which is provided in the first heat transfer system and in which air taken into the interior of the mobile object and the heat medium exchange heat therebetween;

a second interior heat exchanger which is provided in the second heat transfer system and in which air taken into the interior of the mobile object and the heat medium exchange heat therebetween; and

a flow channels switch unit that switches connections between the at least two heat-generating bodies and flow channels of the first and second heat transfer systems such that assuming the at least two heat-generating bodies are divided into two heat control object groups, the heat medium that flows in the first heat transfer system is circulated to one of the two heat control object groups and the heat medium that flows in the second heat transfer system is circulated to the other of the two heat control object groups.

9. A heat cycle system for a mobile object according to claim 8, wherein

when a state is reached where an amount of heat exchange between the heat medium fed to the at least two heat-generating bodies and the at least two heat-generating bodies is to be made larger than an amount of heat exchange between the at least two heat-generating bodies and the heat medium of the first heat transfer system, the flow channels connection control unit controls the connections between the flow channels such that the heat medium that flows in the first heat transfer system is circulated to one of the temperature control object groups while the heat medium that flows in the second heat transfer system is circulated to the other of the temperature control object groups.