Vehicular air conditioning system

Patent metadata

Field	Value
Publication number	US-9573437-B2
Application number	US-201113982869-A
Country	US
Kind code	B2
Filing date	Feb 21, 2011
Priority date	Feb 21, 2011
Publication date	Feb 21, 2017
Grant date	Feb 21, 2017

Abstract

A vehicular air conditioning system for saving energy includes: a first indoor cooling heat exchanger for suctioning in and cooling the air within or outside a vehicle; an indoor air conditioning heat exchanger installed on the downstream cooling heat exchanger for regulating the temperature of the applicable air, a refrigeration cycle connected to the applicable indoor air conditioning heat exchanger, a heating element mounted in the vehicle, and a circuit for the machine coolant circulating between the applicable heating element and the applicable first indoor cooling heat exchanger, and in which the air flow path for air flowing into the indoor air conditioning heat exchanger is structured by merging a flow path passing through the first indoor cooling heat exchanger to a flow path not passing through the first indoor cooling heat exchanger, and is also configured to allow switching to either of the two flow paths.

First claim

The invention claimed is:

1. A vehicular air conditioning system for a vehicle, the system comprising:
an outdoor air intake port located on the outside of the vehicle;
an air dispensing port located inside of the vehicle;
a first air flow path fluidically coupling the outdoor air intake port to the air dispensing port;
a first indoor cooling heat exchanger located in the first air flow path;
a second air flow path fluidically coupling the outdoor air intake port and the air dispensing port, wherein the second air flow path does not include the first indoor cooling heat exchanger;
an indoor air conditioning heat exchanger located in the first air flow path and the second air flow path and located adjacent to the air dispensing port;
a second indoor cooling heat exchanger located in the first air flow path and the second air flow path between the indoor air conditioning heat exchanger and the air dispensing port;
a refrigeration cycle connected to the indoor air conditioning heat exchanger that includes a refrigerant coolant circuit;
an intermediate heat exchanger connected to the coolant circuit;
a machine coolant circuit that selectively transfers heat from a heat-generating device mounted in the vehicle to the first indoor cooling heat exchanger, the second indoor coolin heat exchanger, and the intermediate heat exchanger; and
one or more switching dampers that selectively block the first air flow path and the second air flow path.

2. The vehicular air conditioning system according to claim 1 , wherein the first air flow path can be switched to release air that passed through the first indoor cooling heat exchanger to outside the vehicle.

3. The vehicular air conditioning system according to claim 1 , further comprising:
a vehicle control device, wherein the vehicle control device:
determines a state of the vehicle, and
controls the one or more switching dampers based upon the state of the vehicle.

Assignees

• Osaka Tadashi
• Matsushima Hiroaki
• Sekiya Sachio
• Uchida Riichi
• Akiyama Yuki
• Hitachi Ltd

Inventors

• Osaka Tadashi
• Matsushima Hiroaki
• Sekiya Sachio
• Uchida Riichi
• Akiyama Yuki

Classifications

• B60H2001/00178

  comprising an air passage from the HVAC box to the exterior of the cabin · CPC title

• B60H1/00021 Primary

  Air flow details of HVAC devices · CPC title

• B60H1/00907

  where the flow direction of the refrigerant changes and an evaporator becomes condenser · CPC title

• B60H2001/00928

  comprising a secondary circuit · CPC title

• B60H1/0005 Primary

  the air being firstly cooled and subsequently heated or vice versa · CPC title