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公开(公告)号：FR2370268B1
公开(公告)日：1982-04-23
申请号：FR7732914
申请日：1977-11-02
Applicant: ELECTRONICS CORP AMERICA
Abstract: A two-terminal photodetector comprising a photodiode and a plurality of active and passive components connected so that when connected to a source of current the voltage across the terminals is proportional to the illumination and is proportional by an amplification factor to rapidly changing illumination levels.
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公开(公告)号：NL8103796A
公开(公告)日：1982-04-16
申请号：NL8103796
申请日：1981-08-13
Applicant: ELECTRONICS CORP AMERICA
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公开(公告)号：GB2084369A
公开(公告)日：1982-04-07
申请号：GB8124557
申请日：1981-08-11
Applicant: ELECTRONICS CORP AMERICA
Abstract: A burner control apparatus for use with a fuel installation that has an operating control to produce a request for burner operation, a flame sensor to produce a signal when flame is present in the monitored combustion chamber, and one or more devices for control of ignition and/or fuel flow. The burner control apparatus comprises lockout apparatus for de- energizing the control apparatus, a control device for actuating the ignition and/or fuel control devices, and a timing circuit that provides four successive and partially overlapping timing intervals of precise relation, including a purge timing interval, a pilot ignition interval, a pilot stabilisation interval and a main fuel ignition interval. The present invention further includes a burner control system which verifies the proper operation of certain sensors in a burner or furnace including particularly the air flow sensor. Additionally, the present system also prevents an attempt to ignite a burner if a condition is detected which indicates that the air flow sensor has been bypassed or wedged in the actuated position. Verification of the state of the airflow sensor is achieved by means of photocouplers.
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公开(公告)号：CA1108723A
公开(公告)日：1981-09-08
申请号：CA294795
申请日：1978-01-12
Applicant: ELECTRONICS CORP AMERICA
Inventor： CADE PHILLIP J
Abstract: Burner control apparatus includes control devices for actuating an ignition control means, and a timing circuit for providing an igniton timing sequence of four precise intervals. The timing circuit is actuated in response to a request for burner operation and the control devices are energized in sequence and combination in response to the actuated timing circuit. Time sequential pilot flame and main flame stabilization intervals are provided. If a signal from the flame sensor is received before the end of the overlapping flame stabilization timing intervals, the control device is energized and if flame detection signal is lost a lockout circuit is energized.
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公开(公告)号：CA1103332A
公开(公告)日：1981-06-16
申请号：CA275604
申请日：1977-04-05
Applicant: ELECTRONICS CORP AMERICA
Inventor： CADE PHILLIP J
Abstract: A burner control apparatus includes a timing circuit for providing two successive timing intervals of precise duration, one being a preignition timing interval and the other being an ignition timing interval. The timing circuit includes a capacitor the charging rate of which determines one of the timing intervals and the discharge rate of which determines the other timing interval. In response to a call for burner operation a blower is energized to purge the burner of potentially explosive gases during the pre-ignition timing interval. When the pre-ignition interval comes to an end relays are energized to energize a pilot fuel control and an ignition control. If a flame is sensed during the ignition interval a further relay is energized closing the ignition control and switching over from pilot to main fuel control. If no flame is sensed during this interval a lockout actuator shuts down the entire burner and energizes an alarm. If after establishment of normal burner operation the flame goes out,the cycle of two successive timing intervals is repeated.
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Patent Agency Ranking136.发明专利
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公开(公告)号：GB1578356A
公开(公告)日：1980-11-05
申请号：GB1489877
申请日：1977-04-07
Applicant: ELECTRONICS CORP AMERICA
Abstract: A burner control apparatus includes a timing circuit for providing two successive timing intervals of precise duration, one being a preignition timing interval and the other being an ignition timing interval. The timing circuit includes a capacitor the charging rate of which determines one of the timing intervals and the discharge rate of which determines the other timing interval. In response to a call for burner operation a blower is energized to purge the burner of potentially explosive gases during the pre-ignition timing interval. When the pre-ignition interval comes to an end relays are energized to energize a pilot fuel control and an ignition control. If a flame is sensed during the ignition interval a further relay is energized closing the ignition control and switching over from pilot to main fuel control. If no flame is sensed during this interval a lockout actuator shuts down the entire burner and energizes an alarm. If after establishment of normal burner operation the flame goes out,the cycle of two successive timing intervals is repeated.
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公开(公告)号：IT8067872D0
公开(公告)日：1980-06-05
申请号：IT6787280
申请日：1980-06-05
Applicant: ELECTRONICS CORP AMERICA
Inventor： KETCHUM DAVID D , WEYMAN NATHAN K WEINER PETER J
Abstract: Method and apparatus for evaluating the quality of a flame in response to outputs from a flame sensor. The present invention includes a method and apparatus in which output pulses from a flame sensor are continuously counted.The number of pulses is accumulated over a time interval of a predetermined length and compared with a threshold value. The accumulated total is continuously updated to reflect the pulses received over the previous time interval to effectively provide a moving time-window of a fixed length over which pulses from the flame sensor are accumulated. Other additional checks may be made to ascertain that a flame is present, including the time over which no pulses are detected and a long-term average of the number of pulses. A preferred embodiment disclosed in which numerous self-checking features are incorporated, and which includes a novel bar-graph type of display for displaying flame quality and diagnostic information.
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