Premixing combustion device

摘要

In a premixing combustion device (1) for a heating boiler, comprising a blower (2) which delivers a combustion mixture composed of fuel and air from an outlet opening (8) of the blower (2) via a burner cylinder (9) to a combustion zone, wherein a mixing device (3) arranged upstream of the blower (2) prepares the combustion mixture, it is sought to provide a solution which, in a structurally simple manner, ensures reliable starting of the heating boiler and prevents failures. This is achieved by means of a throughflow reduction device (10) which is arranged between the outlet opening (8) of the blower (2) and the burner cylinder (9) and which has a throughflow reduction element (13) which can be adjusted between a position in which it opens the outlet opening (8) of the blower (2) and a position in which it reduces the size of the outlet opening (8) of the blower (2).

主权项

1. Premixing combustion device for a heating boiler, comprising a burner cylinder, a mixing device and a blower, wherein the blower delivers a combustion mixture composed of fuel and air from an outlet opening of the blower via the burner cylinder to a combustion zone, wherein the mixing device arranged upstream of the blower prepares the combustion mixture, and wherein a throughflow reduction device is arranged between the outlet opening of the blower and the burner cylinder and has a throughflow reduction element which can be adjusted between a position in which it opens the outlet opening of the blower and a position in which it reduces the size of the outlet opening of the blower,
wherein, upon starting of the combustion device, the throughflow reduction element is arranged in the position in which it reduces the size of the outlet opening of the blower, and after the ignition of the combustion mixture, said throughflow reduction element is arranged in the position in which it opens the outlet opening of the blower, and wherein the throughflow reduction device is coupled to the premixing combustion device such that the throughflow reduction element is automatically moved from the position in which it opens the outlet opening of the blower into the position in which it reduces the size of the outlet opening of the blower during the ignition phase.