Vehicular heat management device

Patent metadata

Field	Value
Publication number	US-10400662-B2
Application number	US-201615763850-A
Country	US
Kind code	B2
Filing date	Sep 6, 2016
Priority date	Oct 2, 2015
Publication date	Sep 3, 2019
Grant date	Sep 3, 2019

Abstract

A vehicular heat management device includes a first heat source, a second heat source, a first heat generator, a second heat generator, a heat generator pathway, a first heat source pathway, a second heat source pathway, and a switching portion. The first heat source and the second heat source heat a heat medium. The first heat generator generates heat according to operation. The second heat generator generates heat according to operation. The first heat generator and the second heat generator are provided in the heat generator pathway. The first heat generator is provided in the first heat generator pathway. The second heat generator is provided in the second heat generator pathway. The switching portion switches between a condition where the heat generator pathway is in flowing communication with the first heat generator pathway and a condition where the heat generator pathway is in flowing communication with the second heat generator pathway.

First claim

What is claimed is:

1. A vehicular heat management device, comprising:
a first heat source and a second heat source which heat a heat medium;
a first heat generator that generates heat according to operation of the first heat generator, the heat medium flowing into the first heat generator being required to be at or above a predetermined temperature;
a second heat generator that generates heat according to operation of the second heat generator;
a heat generator pathway in which the first heat generator and the second heat generator are provided;
a first heat source pathway in which the first heat source is provided;
a second heat source pathway in which the second heat source is provided; and
a switching portion configured to switch a fluid circuit connecting the heat generator pathway, the first heat source pathway and the second heat source pathway between
a first state in which the heat generator pathway is in flowing communication with the first heat source pathway while stopping flowing communication between the heat generator pathway and the second heat source pathway, and
a second state in which the heat generator pathway is in flowing communication with the second heat source pathway while stopping flowing communication between the heat generator pathway and the first heat source pathway.

2. The vehicular heat management device according to claim 1 , wherein
the switching portion provides a flowing communication between the heat generator pathway and the first heat source pathway, the heat medium flows, in order, through the first heat source, the first heat generator, and the second heat generator, and
the switching portion provides a flowing communication between the heat generator pathway and the second heat source pathway, the heat medium flows, in order, through the second heat source, the second heat generator, and the first heat generator.

3. The vehicular heat management device according to claim 2 , wherein
the first heat generator and the second heat generator are arranged in series in the heat generator pathway,
the switching portion provides the flowing communication between the heat generator pathway and the first heat source pathway, the heat medium flows, in order, through the first heat generator and the second heat generator in the heat generator pathway, and
the switching portion provides the flowing communication between the heat generator pathway and the second heat source pathway, the heat medium flows, in order, through the second heat generator, and the first heat generator in the heat generator pathway.

4. The vehicular heat management device according to claim 1 , further comprising:
a heater core that heats an air by exchanging heat between the air and the heat medium, the air being sent to a vehicle compartment; and
a heater core pathway in which the heater core is provided, wherein
the switching portion switches between
a condition where the heater core pathway is in flowing communication with the heat generator pathway and the first heat source pathway, and
a condition where the heater core pathway is in flowing communication with the heat generator pathway and the second heat source pathway.

5. The vehicular heat management device according to claim 4 , wherein
the switching portion provides a flowing communication between the heater core pathway, the heat generator pathway and the first heat source pathway, the heat generator pathway is connected in parallel with the heater core pathway, and
the switching portion provides a flowing communication between the heater core pathway, the heat generator pathway and the second heat source pathway, the heat generator pathway is connected in series with the heater core pathway.

6. The vehicular heat management device according to claim 5 , further comprising:
a first pump that suctions the heat medium of the first heat source pathway; and
a second pump that suctions the heat medium of the second heat source pathway, wherein
the switching portion provides the flowing communication between the heater core pathway, the heat generator pathway and the first heat source pathway, the heater core pathway is connected to a part of the first heat source pathway which is located on a suction side of the first pump, and
the switching portion provides the flowing communication between the heater core pathway, the heat generator pathway and the second heat source pathway, the heater core pathway is connected to a part of the second heat source pathway which is located on a suction side of the second pump.

7. The vehicular heat management device according to claim 6 , wherein
the switching portion includes a switching valve that switches between
a condition where the heater core pathway is in flowing communication with the first heat source pathway, and
a condition where the heater core pathway is in flowing communication with the second heat source pathway.

8. The vehicular heat management device according to claim 7 , wherein
the switching valve switches between
the condition where the heater core pathway is in flowing communication with the first heat source pathway, and
a condition where the heater core pathway is in flowing communication with the second heat source pathway, and the first heat source pathway is in flowing communication with the second heat source pathway.

9. The vehicular heat management device according to claim 8 , wherein
the switching portion includes a closing portion that switches between
a condition where the heat medium flows through the first heat source pathway, and
a condition where a flow of the heat medium in the first heat source pathway is stopped.

10. The vehicular heat management device according to claim 1 , further comprising:
a control unit that controls an operation of the switching portion based on a temperature of the heat medium in the first heat source pathway.

11. The vehicular heat management device according to claim 10 , wherein
at least one of a plurality of first conditions is met while the heat generator pathway is connected to the second heat source pathway, the control unit controls the operation of the switching portion such that the heat generator pathway communicates with the first heat source pathway, and
the plurality of first conditions include
a condition where the temperature of the heat medium in the first heat source pathway is higher than a temperature of the heat medium in the second heat source pathway by a predetermined value or more,
a condition where the temperature of the heat medium in the first heat source pathway is higher than a predetermined temperature, and
a condition where it is determined that an increase rate of the temperature of the heat medium in the first heat source pathway is larger than an increase rate of the temperature of the heat medium in the second heat source pathway.

12. The vehicular heat management device according to claim 10 , wherein
at least one of a plurality of second conditions is met while the heat generator pathway is connected to the first heat source pathway, the control unit controls the switching portion such that the heat generator pathway communicates with the second heat source pathway, and
the plurality of second conditions include
a condition where the temperature of the heat medium in the first heat source pathway is lower than a predetermined temperature,
a condition where it is determined that a decrease rate of the temperature of the heat medium in the first heat source pathway is larger than a predetermined temperature, and
a condition where it is determined that an availability of the first heat source is lower than a p

Assignees

• Denso Corp
• Toyota Motor Co Ltd

Inventors

• Enomoto Norihiko
• Kato Yoshiki
• Takeuchi Masayuki
• Miura Koji
• Sato Keigo
• Sugimura Kengo
• Kakehashi Nobuharu
• Ozawa Ikuo
• Marasigan Ariel
• Shinpo Yoshikazu
• Onishi Yoichi
• Murata Toshio

Classifications

• F01P2007/146

  using valves · CPC title

• F01P2005/105

  Using two or more pumps · CPC title

• F01P2005/125

  Driving auxiliary pumps electrically · CPC title

• F01P7/16 Primary

  by thermostatic control · CPC title

• F01P2025/32

  Engine outcoming fluid temperature · CPC title