US 2015/0090803 A1Published application

Air conditioning system

AssigneeDaikin Industries, Ltd.

InventorsMasakazu OKAMOTO, Michio MORIWAKI, Hiroshi YOH

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Abstract

An air conditioning system includes a heat pump having a refrigerant radiator, a gas furnace unit having a heating section to heat passing air, a blower generating air flow through the radiator and the heating section, and a controller controlling operation of the heat pump unit, the gas furnace unit, and the blower. The controller has a first operating mode in which the gas furnace unit operates alone as a heat source unit, a second operating mode in which the heat pump unit operates alone as a heat source unit, and a third operating mode in which the gas furnace unit and the heat pump unit operate at the same time as a heat source unit. The controller is configured to select the operating modes based on a parameter relating to outside air temperature that is the temperature of outside air.

Claims20

Dependent claims

An air conditioning system comprising:

a heat pump unit that includes a refrigerant radiator;
a gas furnace unit that includes a heating section configured to heat air passing through the heating section;
a blower configured to generate an air flow that passes through the radiator and the heating section;
and
a controller configured to control operation of the heat pump unit, the gas furnace unit, and the blower,
the controller having operating modes including
a first operating mode in which the controller causes the gas furnace unit to operate alone as a heat source unit,
a second operating mode in which the controller causes the heat pump unit to operate alone as a heat source unit, and
a third operating mode in which the controller causes the gas furnace unit and the heat pump unit to operate at the same time as a heat source unit, and
the controller being configured to select the operating modes based on a parameter relating to outside air temperature that is the temperature of outside air.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/500,993Filed 29 Sep 2014
Priority: JP 2013-20543030 Sep 2013
Published: 2 Apr 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification23 codes

F24D 19/1087
For air heating systems: system using a heat pump
F24D 5/02
Hot-air central heating systems ; Exhaust gas central heating systems: operating with discharge of hot air into the space or area to be heated
F24D 5/12
Hot-air central heating systems ; Exhaust gas central heating systems: using heat pumps
F24H 15/144
Characterised by the purpose of the control: measuring or calculating energy consumption