Air-conditioning control unit

a technology of air-conditioning control unit and control unit, which is applied in the direction of domestic cooling apparatus, lighting and heating apparatus, heating types, etc., can solve the problems of increased manufacturing cost and complex structure of the system, and achieve the effect of reducing the difference between blowing temperature, improving comfortability during heating operation, and reducing the differen
US20050229615A1Inactive Publication Date: 2005-10-20CALSONIC KANSEI CORP
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Patent Information

Authority / Receiving Office
US Β· United States
Patent Type
Applications(United States)
Current Assignee / Owner
CALSONIC KANSEI CORP
Publication Date
2005-10-20
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

An air-conditioning control unit (26) controls the airflow distributing door (16), a first indoor heat exchanger (10) is provided in the first air passage (21) and a second indoor heat exchanger (4) is provided in the second air passage (22). in adjusting air sent from the first air passage (21) is distributed into the second air passage (22) and the third air passage (23) by controlling the airflow distributing door (16). In switching from the cooling operation state to the heating operation state, the flow of the adjusting air in the second air passage (22) is increased by controlling the airflow distributing door (16) by the air-conditioning control unit (26) prior to the switching of refrigerant circuit from the cooling control mode to the heating control mode.
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Description

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention relates to an air-conditioning control unit used for an air conditioning system that performs heating operation using a refrigerant of a fuel car, electric car or the like as a heat source.

[0003] 2. Description of the Related Art

[0004] A Well-known conventional air conditioning system adjusts temperature of air in a cabin by mixing hot air from a heat exchanger of a radiator for an engine as a heat source and cold air from a cooler using refrigerant as disclosed in a patent brochure, Japanese Patent Application Laid-Open No. 2002-274147.

[0005] In the case where cooling water in the radiator for the engine is used as a beat source, the above described conventional air conditioning system would be effective to control the temperature of air in the cabin.

[0006] However, in the case where no heat source of the engine exists, as in the electric vehicle by fuel cell, since the air conditioning sy...

Claims

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