Air-conditioning apparatus for vehicle use
First Claim
1. An air-conditioning apparatus for use in a vehicle having a passenger compartment, said air-conditioning apparatus comprising:
- a duct for leading air toward said passenger compartment;
a blower for moving air within said duct to said passenger compartment;
a refrigeration cycle including a refrigerant compressor for compressing and discharging refrigerant, a refrigerant/water heat exchanger for exchanging heat between refrigerant discharged from said refrigerant compressor and hot water in order to heat said hot water, and a refrigerant evaporator for cooling air by means of refrigerant evaporation heat; and
a hot-water cycle including a pump for circulating said hot water heated by said refrigerant/water heat exchanger, and a hot-water type heater disposed within said duct for heating air flowing within said duct by means of hot water entering said hot-water type heater from said refrigerant/water heat exchanger.
1 Assignment
0 Petitions
Accused Products
Abstract
An air-conditioning apparatus for vehicle use which can obtain sufficient heater capacity even in a cold-climate region, can utilize an existing heater unit, can combine a combustion type heater with a simple assembly operation, and can utilize exhaust heat of a motor for travel use of an automobile for heating a passenger compartment. The air-conditioning apparatus includes a refrigeration cycle connecting a refrigerant compressor, a refrigerant/water heat exchanger, a first pressure-reducer, and an exterior heat exchanger in an annular configuration. Further, a hot-water cycle connects the refrigerant/water heat exchanger, a hot-water heater core, an exhaust-heat cooler, and a water pump in an annular configuration and connects a combustion type heater in parallel with the refrigerant/water heat exchanger. Accordingly, during heat-pump hot-water heating, hot water, with a temperature raised by refrigerant condensation by the refrigerant/water heat exchanger, circulates in the hot-water heater core so as to obtain a required heater capacity. During combustion heater hot-water heating, hot water, with a temperature raised by combustion fuel in the combustion type heater, circulates in the hot-water heater core so as to obtain sufficient heating capacity even in a cold-climate region.
-
Citations
23 Claims
-
1. An air-conditioning apparatus for use in a vehicle having a passenger compartment, said air-conditioning apparatus comprising:
-
a duct for leading air toward said passenger compartment; a blower for moving air within said duct to said passenger compartment; a refrigeration cycle including a refrigerant compressor for compressing and discharging refrigerant, a refrigerant/water heat exchanger for exchanging heat between refrigerant discharged from said refrigerant compressor and hot water in order to heat said hot water, and a refrigerant evaporator for cooling air by means of refrigerant evaporation heat; and a hot-water cycle including a pump for circulating said hot water heated by said refrigerant/water heat exchanger, and a hot-water type heater disposed within said duct for heating air flowing within said duct by means of hot water entering said hot-water type heater from said refrigerant/water heat exchanger. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
-
-
22. An air-conditioning apparatus for use in a vehicle having a passenger compartment, said air-conditioning apparatus comprising:
-
a duct for leading air toward said passenger compartment; a blower for moving air within said duct to said passenger compartment; a first refrigeration cycle including a refrigerant compressor for compressing and discharging a first refrigerant, a heat exchanger for exchanging heat between said first refrigerant discharged from said refrigerant compressor and a second refrigerant in order to heat said first refrigerant water, and a refrigerant evaporator for cooling air by means of refrigerant evaporation heat; and a second refrigeration cycle including a pump for circulating said second refrigerant heated by said heat exchanger, and a heater disposed within said duct for heating air flowing within said duct by means of said second refrigerant entering said heater from said heat exchanger; wherein said heat exchanger is disposed at a downstream of said compressor to lead said first refrigerant discharged from said compressor and elevated to a high degree thereinto, and disposed at a upstream of said heater to lead said second refrigerant which has a lower degree and is heat exchanged with said first refrigerant. - View Dependent Claims (23)
-
Specification