Patent ID: 8545216
Filing Date: 2013-10-01
Classification: F16K,F23N,Y10T

Abstract:
1. A valve assembly for a heating device, the valve assembly comprising: a housing defining: a valve body rotatably positioned with the housing and configured to permit fluid communication between the first fuel input and the first flow path when in a first state, and configured to permit fluid communication between the first fuel input and the second flow path when in a second state, wherein the valve body is configured to rotate between the first state and the second state: a cam connected to the valve body and configured such that rotation of the valve body between the first state and the second state rotates the cam between a first position and a second position; a mixing compartment in fluid communication with the first flow path, the second flow path and a burner, the compartment defining one or more channels through which air can flow to mix with fuel delivered to the compartment via the first flow path or the second flow path; a rod extending between and connected to both the cam and the mixing compartment, the rod configured such that when the cam is in the first position the one or more channels can allow a first amount of air flow into the mixing compartment and when the cam is in the second position the one or more channels can allow a second amount of air flow into the mixing compartment different from the first; and a control knob mechanically connected to the valve body, cam, rod, and mixing compartment wherein rotation of the control knob controls the state of the valve body, the position of the cam and the amount of air flow through the mixing compartment.