Patent ID: 7775451
Filing Date: 2010-08-17
Classification: B60H

Abstract:
1. A variable flow mixing valve for a heating ventilation and air conditioning module, the variable flow mixing valve comprising: drive means in communication with a mixing door for selectively allowing a first flow of air from a first chamber, a baffle for selectively allowing a second flow of air from a second chamber, and linking means linking the mixing door and the baffle in such a way as to provide an aperture between the mixing door and the baffle through which, in use, the first and/or second air flows pass; wherein the linking means comprises a plurality of link members extending between the mixing door and the baffle such that driving communication is provided between the mixing door and the baffle; wherein the link members have a cammed profile; wherein the baffle is provided on tracks within a parking area which houses the baffle in its various operative positions, the parking area comprising tracks which guide the baffle therein; and wherein the baffle is curved and the baffle and linking members are formed from a single piece of material to provide an integrated baffle and linking means.