Control unit for an HVAC system comprising an economizer and method for operating such control unit
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G05D-023/00
F24F-011/00
F24F-007/08
출원번호
US-0749007
(2013-01-24)
등록번호
US-9435557
(2016-09-06)
발명자
/ 주소
Albrecht, Daniel
Aeberhard, Ronald
Hofstetter, Guido
Deangelis, Darryl
출원인 / 주소
BELIMO Holding AG
대리인 / 주소
Sughrue Mion, PLLC
인용정보
피인용 횟수 :
3인용 특허 :
18
초록▼
A control unit (22) for an HVAC system (10) comprises an economizer (EC), which economizer (EC) is configured to introduce outdoor air (OA) into the HVAC system (10) for cooling and/or ventilation purposes in a manner controlled by said control unit (22), said control unit (22) comprising a base mod
A control unit (22) for an HVAC system (10) comprises an economizer (EC), which economizer (EC) is configured to introduce outdoor air (OA) into the HVAC system (10) for cooling and/or ventilation purposes in a manner controlled by said control unit (22), said control unit (22) comprising a base module (23) with: a control circuit (24), a man machine interface (25) connected to said control circuit (24), and first I/O means for connecting at least one sensor (32, . . . , 36) of said HVAC system to said control circuit (24) and for delivering at least one control signal from said control circuit (24) to control the operation of said economizer (EC). Said base module (23) is configured to optionally receive at least one extension module (26, 27, 28), which can be snapped on and electrically connected to said base module (23) for expanding the functionality of said control unit (22).
대표청구항▼
1. A control unit (22) for a heating, ventilation and air conditioning (HVAC) system (10) comprising an economizer (EC), which economizer (EC) is configured to introduce outdoor air (OA) into the HVAC system (10) for cooling and/or ventilation purposes in a manner controlled by said control unit (22
1. A control unit (22) for a heating, ventilation and air conditioning (HVAC) system (10) comprising an economizer (EC), which economizer (EC) is configured to introduce outdoor air (OA) into the HVAC system (10) for cooling and/or ventilation purposes in a manner controlled by said control unit (22), said control unit (22) comprising a base module (23) with: a control circuit (24), a man machine interface (25) connected to said control circuit (24), and first input/output (I/O) means (39, CR1, CR2, CR3) for connecting at least one sensor (32, . . . ,36) of said HVAC system to said control circuit (24) and for delivering at least one control signal from said control circuit (24) to control the operation of said economizer (EC), whereby said base module (23) is configured to optionally receive at least one extension module (26, 27, 28), which can be snapped on and electrically connected to said base module (23) for expanding the functionality of said control unit (22) and wherein said first I/O means (39, CR1, CR2, CR3) comprises connecting means (1Act, 2Act, 3Act, 5Act) for connecting an actuator (17), connecting means (Y1, Y2, W1) for connecting a thermostat (31), and at least one temperature connecting means or humidity connecting means. 2. Control unit as claimed in claim 1, wherein said base module (23) is configured to receive said at least one extension module (26, 27, 28) such that the electrical connection between said at least one extension module (26, 27, 28) and said base module (23) is automatically established, when said at least one extension module (26, 27, 28) is snapped on said base module (23). 3. Control unit as claimed in claim 2, wherein a plug-in connector (56, 57, 58, 63) is provided for electrically connecting said base module (23) and said at least one extension module (26, 27, 28), one part of said plug-in connector (56, 57, 58, 63) being integrated into said base module (23) and the other part of said plug-in connector (56, 57, 58, 63) being integrated into said at least one extension module (26, 27, 28). 4. Control unit as claimed in claim 1, wherein said base module (23) is configured to receive a plurality of extension modules (26, 27, 28), wherein plug-in connectors (56, 57, 58, 63) are provided for electrically connecting said base module (23) and each of said extension modules (26, 27, 28), one part of each plug-in connector (56, 57, 58, 63) being integrated into said base module (23) and the other part of each plug-in connector (56, 57, 58, 63) being integrated into an extension module (26, 27, 28), whereby said plug-in connectors (56, 57, 58, 63) are individualized so that each plug-in connector (56, 57, 58, 63) can only be used with one type of extension module. 5. Control unit as claimed in claim 3, wherein said base module (23) is provided with first latching means (62) and said at least one extension module (26, 27, 28) is provided with second latching means (61) configured to co-operate with said first latching means (62) such that said at least one extension module (26, 27, 28) is locked in place on said base module (23), when it is plugged into said plug-in connector (56, 57, 58, 63). 6. Control unit as claimed in claim 5, wherein said first and second latching means (61, 62) comprise an elastically bendable snapping clip (61) and one or more catches (62), whereby said snapping clip (61) glides over and latches behind said catches (62), when said at least one extension module (26, 27, 28) is plugged into said plug-in connector (56, 57, 58, 63), and whereby said at least one extension module (26, 27, 28) can be released by elastically bending said snapping clip (61). 7. Control unit as claimed in claim 6, wherein said elastic snapping clip (61) is provided at said at least one extension module (26, 27, 28), and said catches (62) are arranged at said base module (23). 8. Control unit as claimed in claim 1, wherein said at least one extension module (26, 27, 28) is provided with second I/O means (CR4, CR5; 50, 51, 52) for electrically connecting said at least one extension module (26, 27, 28) and thereby said base module (23) with further units (18, 21, 29, 30, 37) being relevant for the operation of the HVAC system (10). 9. Control unit as claimed in claim 8, wherein said at least one extension module (26) is configured to enable a demand controlled ventilation (DCV) operation of the HVAC system (10), and said second I/O means comprises input means for a CO2 sensor (37) and output means for controlling an exhaust fan (21) within said HVAC system (10). 10. Control unit as claimed in claim 9, wherein said second I/O means comprise further output means for controlling an indoor fan (18) within said HVAC system (10). 11. Control unit as claimed in claim 8, wherein said at least one extension module (27) is configured to enable a communication with remote devices (29, 30). 12. Control unit as claimed in claim 11, wherein said remote devices (29, 30) comprise an alarm device (30). 13. Control unit as claimed in claim 11, wherein said remote devices (29, 30) comprise a remote unit (29) for exchanging data with said control unit (22). 14. Control unit as claimed in claim 1, wherein said base module (23) comprises a base plate (53) and a housing (54) mounted on said base plate (53), which housing (54) encloses said control circuit (24) and said man machine interface (25), whereby said housing (54) comprises on its upper side an I/O platform (38), on which said first I/O means (39, CR1, CR2, CR3) is arranged, and which is configured to receive said at least one extension module (26, 27, 28), and further comprises a man-machine interface (MMI) housing part (40), which projects from said I/O platform (38) and contains said man machine interface (25). 15. Control unit as claimed in claim 14, wherein said first I/O means comprises a plurality of connector rows (CR1, CR2, CR3), which are arranged in a separate I/O area (39). 16. Control unit as claimed in claim 15, wherein said at least one extension module (26, 27, 28) can be snapped on said base module (23) outside said I/O area (39) without changing the footprint of said base module (23). 17. Control unit as claimed in claim 15, wherein each said connector row (CR1, CR2, CR3) comprises a plurality of individual male spade connectors. 18. Control unit as claimed in claim 1, wherein said control circuit (24) and said sensor connecting means (+SAT, −SAT; +OAT, −OAT; +OAH, −OAH; +RAT, −RAT; +RAH, −RAH) are configured to be connected to analog sensors. 19. Control unit as claimed in claim 1, wherein said connecting means (1Act, 2Act, 3Act, 5Act) for connecting an actuator (17) comprises a separate connector (5Act) for receiving a feedback signal from said actuator (17), said feedback signal containing information about the actual position of said actuator (17). 20. Control unit as claimed in claim 1, wherein said first I/O means (39, C1, C2, C3) further comprises eighth connecting means (CC1, CC2) for connecting first and second compressors of a two-stage cooling device (19) within said HVAC system (10). 21. Control unit as claimed in claim 1, wherein said man machine interface (25) comprises a display (46) for displaying menu points, onboard information, set values and real time operating information, a plurality of push buttons (41, 42, 47, 48, 49) for inputting various commands, and a plurality of optical indicators (43, 44, 45) for indicating status information. 22. Control unit as claimed in claim 21, wherein said display (46) is an enhanced transflective backlit liquid crystal display (LCD display), with two rows of 16 characters each. 23. Control unit as claimed in claim 21, wherein said plurality of push buttons (41, 42, 47, 48, 49) comprises a separate help button (47) for retrieving and displaying context sensitive help information stored with said control circuit (24).
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이 특허에 인용된 특허 (18)
Gilson John D. (Bridgeport NY), Air conditioning economizer control method and apparatus.
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