US 6,484,528 B1 · Air-conditioner

Abstract

A compressor (21), a heat exchanger (30), a demoisturizer (22), and an expansion device (23) are duct connected in that order to form a heat source-side system (20). The compressor (21) draws and compresses outdoor air and exhaust air for ventilation. The compressed air is subjected to heat exchange with air for conditioning in the heat exchanger (30). The compressed air is demoisturized in the demoisturizer (22). Thereafter, the compressed air is expanded in the expansion device (23), changes to low-temperature air, and then is expelled to outside the room. On the other hand, the conditioning air is delivered, through an inlet duct (43), to the heat exchanger (30). The conditioning air is a mixture of supply air for ventilation and air in the room. The conditioning air is subjected to heat exchange with the compressed air in the heat exchanger (30), whereby the conditioning air is heated. Further, the conditioning air is humidified in a humidifying part (42). Thereafter, the conditioning air is supplied into the room for effecting room heating.

Claims14

Dependent claims

An air-conditioning apparatus which heats room air by an air cycle employing air as a refrigerant for performing air-heating, comprising:

a compressor (21) which draws in air from the outside and the inside of a room for compressing said drawn air;
heating means (30) which heats air for conditioning formed of at least air from said room by heat exchange with all said compressed air compressed by said compressor (21);
and
an expansion device (23) which provides expansion of said compressed air which has undergone said heat exchange in said heating means (30);
wherein low-temperature air, expanded and lowered in temperature in said expansion device (23), is expelled to the outside of said room, whereas said conditioning air heated by said heating means (30) is supplied into said room.

2 more elements

An air-conditioning apparatus which heats room air by an air cycle employing air as a refrigerant for performing air-heating, comprising:

a compressor (21) which draws in air from the outside and the inside of a room for compressing said drawn air;
heating means (30) which heats air for conditioning formed of at least air from said room by heat exchange with all said compressed air compressed by said compressor (21);
and
an expansion device (23) which provides expansion of said compressed air which has undergone said heat exchange in said heating means (30);
and
demoisturizing means (22) which has a separation membrane, said separation membrane being formed such that water vapor in the air is allowed to pass therethrough from a high partial pressure of water-vapor side to a low partial pressure of water-vapor side thereof, for separation of water vapor contained in said compressed air without causing said water vapor to undergo condensation;
wherein low-temperature air, expanded and lowered in temperature in said expansion device (23), is expelled to the outside of said room, whereas said conditioning air heated by said heating means (30) is supplied into said room.

4 more elements

Dependencies are inferred from the claim text.

Air-conditioner

Life of this patent

Air-conditioner

Life of this patent

Abstract

Claims14