Shut-off plate for combustion spaces adjustable by motor

Details Shut-off plate for combustion spaces adjustable by motor Shut-off plate for combustion spaces adjustable by motor

1978-04-27

1981-04-28

Yuen, Henry C.

Automatic temperature and humidity regulation

Miscellaneous

Burner controls with automatic cutoff

431 20, 318485, 318372, 188270, G05D 2300, H02K 2368, B60T 116

Patent

active

042640334

ABSTRACT:
A shut-off device for installation in the waste gas line from combustion spaces. The device includes a flow-through housing, a shut-off plate mounted in this flow-through housing and adjustable, and a positioning motor arranged on the outside of the flow-through housing for the shut-off plate. The shut-off plate is biased by a spring in a direction toward a first terminal position defined by an abutment and is capable of being adjusted by the positioning motor in a direction toward a second terminal position defined by a second abutment. At least one limit switch is provided for actuation by a control element in the open position of the shut-off plate and serving to initiate operation of combustion spaces arranged upstream from the shut-off device. The positioning motor is a rapidly rotating electric motor having a motor shaft connected with the transmission input of a step down transmission for converting the rotary speed of the motor into a slower speed. The transmission output is connected with the shut-off plate. The spring engages the shut-off plate and/or a transmission part near the transmission output. A checking device is provided for engagement with the motor shaft and/or a transmission part near the transmission output.

REFERENCES:
patent: 184979 (1876-12-01), Neville
patent: 2856992 (1958-10-01), Bartels
patent: 3090558 (1963-05-01), Vaughn

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