US 10,647,179 B2Granted

Air-conditioning apparatus for vehicles

AssigneeSanden Automotive Climate Systems Corporation

InventorsKenichi Suzuki, Ryo Miyakoshi, Kohei Yamashita

Life of this patent

Estimating the term…

Loading patent…

Abstract

In an air-conditioning apparatus of a so-called heat pump system, wasteful power consumption to be generated when an auxiliary heating means is disposed on an air upstream side of a radiator is decreased, and comfortable heating of a vehicle interior is also achieved. The air-conditioning apparatus includes an electric heater 57 disposed on an upstream side of air flowing through an air flow passage 3 to a radiator 4, and a controller executes a cooperative operation of heating air to be supplied to the vehicle interior by the electric heater 57 and the radiator 4, and stops a compressor 2 on the basis of establishment of a condition that an inlet refrigerant temperature Tcxin of the radiator is lower than an outlet refrigerant temperature TCI of the radiator (Tcxin<TCI).

Claims8

Dependent claims

An air-conditioning apparatus for vehicles, comprising:

a compressor to compress a refrigerant;
an air flow passage through which air to be supplied to a vehicle interior flows;
a radiator disposed in the air flow passage to let the refrigerant radiate heat, thereby heating the air to be supplied to the vehicle interior;
an outdoor heat exchanger disposed outside the vehicle interior to let the refrigerant absorb heat;
and
a control means,
so that the control means lets the refrigerant discharged from the compressor radiate heat in the radiator, decompresses the refrigerant from which the heat has been radiated, and then lets the refrigerant absorb heat in the outdoor heat exchanger to heat the vehicle interior,
the air-conditioning apparatus for the vehicles, comprising:
an auxiliary heating means disposed on an upstream side of the air flowing through the air flow passage to the radiator,
wherein the control means executes a cooperative operation of heating the air to be supplied to the vehicle interior by the auxiliary heating means and the radiator, and
stops the compressor on the basis of establishment of a condition that an inlet refrigerant temperature Tcxin of the radiator is lower than an outlet refrigerant temperature TCI of the radiator.

8 more elements

An air-conditioning apparatus for vehicles, comprising:

a compressor to compress a refrigerant;
an air flow passage through which air to be supplied to a vehicle interior flows;
a radiator disposed in the air flow passage to let the refrigerant radiate heat, thereby heating the air to be supplied to the vehicle interior;
an outdoor heat exchanger disposed outside the vehicle interior to let the refrigerant absorb heat;
and
a control means,
so that the control means lets the refrigerant discharged from the compressor radiate heat in the radiator, decompresses the refrigerant from which the heat has been radiated, and then lets the refrigerant absorb heat in the outdoor heat exchanger to heat the vehicle interior,
the air-conditioning apparatus for the vehicles, comprising:
an auxiliary heating means disposed on an upstream side of the air flowing through the air flow passage to the radiator,
wherein the control means executes a cooperative operation of heating the air to be supplied to the vehicle interior by the auxiliary heating means and the radiator, and
stops the compressor on the basis of establishment of a condition that a difference between a total capability Qtotal that is a total heating capability to be generated by the radiator and the auxiliary heating means and an auxiliary heating capability Qhtr that is a heating capability to be generated by the auxiliary heating means is smaller than a predetermined value X1.

8 more elements

An air-conditioning apparatus for vehicles, comprising:

a compressor to compress a refrigerant;
an air flow passage through which air to be supplied to a vehicle interior flows;
a radiator disposed in the air flow passage to let the refrigerant radiate heat, thereby heating the air to be supplied to the vehicle interior;
an outdoor heat exchanger disposed outside the vehicle interior to let the refrigerant absorb heat;
and
a control means,
so that the control means lets the refrigerant discharged from the compressor radiate heat in the radiator, decompresses the refrigerant from which the heat has been radiated, and then lets the refrigerant absorb heat in the outdoor heat exchanger to heat the vehicle interior,
the air-conditioning apparatus for the vehicles, comprising:
an auxiliary heating means disposed on an upstream side of the air flowing through the air flow passage to the radiator,
wherein the control means executes a cooperative operation of heating the air to be supplied to the vehicle interior by the auxiliary heating means and the radiator, and
stops the compressor on the basis of establishment of a condition that a ratio of a difference between a total capability Qtotal that is a total heating capability to be generated by the radiator and the auxiliary heating means and an auxiliary heating capability Qhtr that is a heating capability to be generated by the auxiliary heating means to a power consumption Php of the compressor is smaller than a predetermined value X2.

8 more elements

An air-conditioning apparatus for vehicles, comprising:

a compressor to compress a refrigerant;
an air flow passage through which air to be supplied to a vehicle interior flows;
a radiator disposed in the air flow passage to let the refrigerant radiate heat, thereby heating the air to be supplied to the vehicle interior;
an outdoor heat exchanger disposed outside the vehicle interior to let the refrigerant absorb heat;
and
a control means,
so that the control means lets the refrigerant discharged from the compressor radiate heat in the radiator, decompresses the refrigerant from which the heat has been radiated, and then lets the refrigerant absorb heat in the outdoor heat exchanger to heat the vehicle interior,
the air-conditioning apparatus for the vehicles, comprising:
an auxiliary heating means disposed on an upstream side of the air flowing through the air flow passage to the radiator,
wherein the control means executes a cooperative operation of heating the air to be supplied to the vehicle interior by the auxiliary heating means and the radiator, and
stops the compressor on the basis of establishment of one of:
a condition that an inlet refrigerant temperature Tcxin of the radiator is lower than an outlet refrigerant temperature TCI of the radiator,
a condition that a difference between a total capability Qtotal that is a total heating capability to be generated by the radiator and the auxiliary heating means and an auxiliary heating capability Qhtr that is a heating capability to be generated by the auxiliary heating means is smaller than a predetermined value X1, and
a condition that a ratio of a difference between the total capability Qtotal that is the total heating capability to be generated by the radiator and the auxiliary heating means and the auxiliary heating capability Qhtr that is the heating capability to be generated by the auxiliary heating means to a power consumption Php of the compressor is smaller than a predetermined value X2, or
any combination of the conditions.

12 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/745,541Filed 1 Jul 2016
Priority: JP 2015-14378721 Jul 2015
Published: US 2018/0354343 A113 Dec 2018
Granted: 12 May 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

B60H 1/2225
The heat being derived from electric heaters: arrangements of electric heaters for heating air
B60H 1/00921
Controlling the flow of liquid in a heat pump system: where the flow direction of the refrigerant does not change and there is an extra…
B60H 1/3213
Control means therefor: for increasing the efficiency in a vehicle heat pump
B60H 2001/00957
The components being temperature regulating devices: comprising locations with heat exchange within the refrigerant circuit itself, e.g. cross-,…