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公开(公告)号：US3638857A
公开(公告)日：1972-02-01
申请号：US3638857D
申请日：1970-05-06
Applicant: HONEYWELL INC
Inventor： HOGEL JOSEPH E , SPETHMANN DONALD H
CPC classification number: F24F11/00 , F24F11/30 , F24F2003/005 , F24F2003/006 , F24F2110/10 , F24F2110/20 , F24F2221/54 , Y10T137/2409
Abstract: A pneumatic pressure responsive apparatus utilizing diaphragm logic which selects and transmits the lowest pressure of a plurality of input pressures.
Abstract translation: 一种利用光阑逻辑的气动压力响应装置，其选择并传送多个输入压力的最低压力。
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公开(公告)号：US3692240A
公开(公告)日：1972-09-19
申请号：US3692240D
申请日：1970-07-24
Applicant: HONEYWELL INC
Inventor： SPETHMANN DONALD H
IPC: F24F11/00 , G05D23/185 , G05B11/48
CPC classification number: F24F11/00 , F24F11/30 , F24F2013/087 , F24F2110/10 , Y10T137/2409
Abstract: A pneumatic control system for optimally controlling a condition in a plurality of zones, each zone having a thermostat or the like. Each thermostat is in communication and has proximately associated therewith valve means. The valve means are suitably interconnected and are in communication with a source of air pressure and output means, which output means provides a signal indicative of either the highest or the lowest of the output pressures of the thermostats.
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公开(公告)号：US3578242A
公开(公告)日：1971-05-11
申请号：US3578242D
申请日：1969-09-03
Applicant: HONEYWELL INC
Inventor： SPETHMANN DONALD H
CPC classification number: F24F11/00 , F24F11/30 , F24F11/84 , F24F2110/10 , F24F2110/40 , F24F2221/54
Abstract: A pneumatic control system controlling sequentially operable valves, including a pressure-responsive pneumatic switch operable in response to the operation of the central fan or blower of the air-conditioning system. This switch connects the thermostat to the valves when the blower or fan is operating, connects a pressure reducing valve to the valves of the air-conditioning system when the fan is not operating, and provides a control pressure suitable for holding the valves in the desired position for nonoperation.
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