IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0616666
(1990-11-21)
|
발명자
/ 주소 |
- Evens Lance J. (2028 Grenoble Carrollton TX 75007)
|
인용정보 |
피인용 횟수 :
8 인용 특허 :
0 |
초록
▼
A furnace comprises a housing, a fan or blower for moving air through housing, a burner in the housing, fuel supply means operatively connected to the burner, a heat exchanger in the housing a combustion chamber, the burner cooperating with said combustion chamber, an enclosure enclosing the heat ex
A furnace comprises a housing, a fan or blower for moving air through housing, a burner in the housing, fuel supply means operatively connected to the burner, a heat exchanger in the housing a combustion chamber, the burner cooperating with said combustion chamber, an enclosure enclosing the heat exchanger and burner, said enclosure having an opening therein, and a damper operable to control the flow of air through said opening to the heat exchanger. The damper comprises a plate member pivotally mounted in the housing for opening and closing said opening. Preferably a drive motor opens the plate member and a spring biases the plate member closed. The damper is closed when the burner is off and is open when the burner is on. There is a circuit associated with the fuel supply means which is responsive to a predetermined open position of the plate member for permitting the flow of fuel through the fuel supply means when the plate member is open to said predetermined open position. A pilot hole is provided in the plate member for supplying limited air to said burner to maintain combustion for a pilot flame.
대표청구항
▼
In a furnace for heating an area comprising a housing, fan means for moving air through said housing, burner means in the housing, fuel supply means operatively connected to the burner means, combustion chamber means in the housing operatively associated with the burner means, and heat exchanger mea
In a furnace for heating an area comprising a housing, fan means for moving air through said housing, burner means in the housing, fuel supply means operatively connected to the burner means, combustion chamber means in the housing operatively associated with the burner means, and heat exchanger means in the housing operatively connected with the combustion chamber means, there being an entry opening in the housing, the improvement characterized by enclosure means positioned on the housing to enclose said entry opening, said enclosure means having a damper opening therein, damper means operable to control the flow of air through the damper opening to the burner means, said damper means comprising a pivotally mounted plate member that is in a closed position when the burner means is off and is in an open position when the burner means is on, said plate member being pivotally mounted on said enclosure means, drive means for pivoting the plate member to the open position, spring means for biasing the plate member to the closed position, control means for actuating the drive means for positioning the damper means in response to the attainment of a predetermined temperature in the area to be heated and, a limit switch cooperating with the fuel supply means, said damper means including a rotatable shaft to which the plate member is secured, and a spring actuator on said shaft for actuating said limit switch, whereby when the plate member is moved to the open position by the spring means, the spring actuator will close the limit switch and the fuel supply means will supply fuel to the burner means, and when the plate member is moved to the closed position, by the drive means, the limit switch can open and the supply of fuel from the fuel supply means to the burner means will be terminated.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.