公开(公告)号：US20210396384A1

公开(公告)日：2021-12-23

申请号：US17323607

申请日：2021-05-18

Applicant: Pittway Sarl

Inventor： Sybrandus B.V. Munsterhuis ,  Li Hong Rao ,  Guan Jun Liu

IPC: F23D14/62 ,  F23D14/36 ,  F23L5/02

Abstract: In some examples, a gas/air mixing device configured to mix gas and air to provide a gas/air mixture includes a mixer housing with a mounting flange being configured to mount the gas/air mixing device to a fan housing in such a way that a sealing surface of the mounting flange is in contact with a sealing surface of the fan housing. In some examples, the sealing surface of the mounting flange has grooves with a second radius being different from the first radius. In some examples, the sealing surface of the fan housing has a groove, with a second radius being different from the first radius. The mixer housing provides an inlet opening for air, an inlet opening for gas, and an outlet opening for the gas/air mixture. The sealing surface of the mounting flange surrounds the outlet opening of the mixer housing.

公开(公告)号：US11708972B2

公开(公告)日：2023-07-25

申请号：US17323607

申请日：2021-05-18

Applicant: Pittway Sarl

Inventor： Sybrandus B. V. Munsterhuis ,  Li Hong Rao ,  Guan Jun Liu

IPC: F23D14/62 ,  F23D14/36 ,  F23L5/02

CPC classification number: F23D14/62 ,  F23D14/36 ,  F23L5/02 ,  F23D2900/14642

Abstract: In some examples, a gas/air mixing device configured to mix gas and air to provide a gas/air mixture includes a mixer housing with a mounting flange being configured to mount the gas/air mixing device to a fan housing in such a way that a sealing surface of the mounting flange is in contact with a sealing surface of the fan housing. In some examples, the sealing surface of the mounting flange has grooves with a second radius being different from the first radius. In some examples, the sealing surface of the fan housing has a groove, with a second radius being different from the first radius. The mixer housing provides an inlet opening for air, an inlet opening for gas, and an outlet opening for the gas/air mixture. The sealing surface of the mounting flange surrounds the outlet opening of the mixer housing.