Patent ID: 6578624
Filing Date: 2003-06-17
Classification: B60H,G05D

Abstract:
A Heating and air-conditioning apparatus comprising:a chassis within which at least one of hot and cold air flows, the chassis being equipped with an air-blowing mechanism and with a cooling unit and a heating unit provided to heat and cool the air and operates by fluid flowing through said heating and cooling units; a control member for controlling the heating unit between an on an off mode; at least one air flow duct communicating with the chassis; and at least one mixing shutter for controlling air flow through the air flow duct; wherein the mixing shutter is arranged in an overall direction of the air flow downstream of the heating unit and provided to transmit additional air passing through the heating unit when a fresh air passage is in a wide open position, and governs air flow through the heating unit when in an intermediate position of closure and directly controls a switching member of the control member to directly control the heating unit discretely between the on and off modes.