Discharge pressure calculation from torque in an HVAC system
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F25B-049/00
A23G-009/00
F25B-039/04
F25B-049/02
출원번호
US-0368941
(2012-12-21)
등록번호
US-9885508
(2018-02-06)
국제출원번호
PCT/US2012/071145
(2012-12-21)
국제공개번호
WO2013/101701
(2013-07-04)
발명자
/ 주소
Schuster, Don A.
Adepetu, Adeyemi A.
Shah, Rajendra K.
출원인 / 주소
CARRIER CORPORATION
대리인 / 주소
Cantor Colburn LLP
인용정보
피인용 횟수 :
0인용 특허 :
17
초록▼
A method for determining discharge pressure for a compressor operatively connected to a condenser, an expansion device, and an evaporator in a serial relationship, includes receiving information indicative of a compressor torque or compressor current; and determining a discharge pressure in response
A method for determining discharge pressure for a compressor operatively connected to a condenser, an expansion device, and an evaporator in a serial relationship, includes receiving information indicative of a compressor torque or compressor current; and determining a discharge pressure in response to the receiving of the information.
대표청구항▼
1. A method for determining discharge pressure for a compressor operatively connected to a condenser, an expansion device, and an evaporator in a serial relationship, comprising: receiving information indicative of a compressor torque or compressor current;receiving a compressor signal corresponding
1. A method for determining discharge pressure for a compressor operatively connected to a condenser, an expansion device, and an evaporator in a serial relationship, comprising: receiving information indicative of a compressor torque or compressor current;receiving a compressor signal corresponding to a compressor speed of the compressor; andreceiving a sensor signal corresponding to a suction pressure of the compressor;anddetermining the discharge pressure as a function of each of (i) the compressor torque or compressor current, (ii) the compressor speed, and (iii) the suction pressure. 2. The method of claim 1, wherein the received information comprises electric power data including data regarding at least one of a voltage differential, a current, and a phase-angle differential of a motor coupled to the compressor. 3. The method of claim 1, wherein the determining of the discharge pressure further comprises mapping each of the compressor torque, compressor speed, and the suction pressure to the discharge pressure. 4. The method of claim 1, further comprising modulating electric power delivered to a variable speed motor coupled to the compressor. 5. The method of claim 2, wherein the receiving of the information further comprises receiving the electric power data from the motor. 6. The method of claim 1, further comprising receiving a second sensor signal corresponding to a liquid temperature of a refrigerant. 7. The method of claim 1, further comprising mapping the discharge pressure to a saturated discharge temperature. 8. The method of claim 7, further comprising determining a degree of system subcooling from the saturated discharge temperature. 9. A discharge pressure determination system for a compressor, comprising: a vapor compression system including a compressor, a condenser, an expansion device and an evaporator operatively connected in a serial relationship in a refrigerant flow circuit; anda control unit configured for receiving information indicative of a compressor torque or compressor current;a pressure sensor generating a signal corresponding to a suction pressure of the compressor;the control unit receiving a signal corresponding to a compressor speed of the compressor; anddetermining the discharge pressure as a function of each of (i) the compressor torque or compressor current, (ii) the compressor speed, and (iii) the suction pressure. 10. The system of claim 9, wherein the received information comprises electric power data including data regarding at least one of a voltage differential, a current, and a phase-angle differential of a motor coupled to the compressor. 11. The system of claim 10, wherein the control unit is configured for receiving the electric power data from the motor. 12. The system of claim 9, wherein the control unit is configured for receiving the information from an inverter drive coupled to a variable speed motor. 13. The system of claim 12, wherein the inverter drive is configured to modulate electric power delivered to the variable speed motor coupled to the compressor. 14. The system of claim 9, wherein the control unit is configured for mapping each of the compressor torque, compressor speed, and the suction pressure to the discharge pressure. 15. The system of claim 9, further comprising a temperature sensor for receiving a liquid temperature of a refrigerant in the refrigerant flow circuit. 16. The system of claim 9, wherein the control unit is configured for mapping the discharge pressure to a saturated discharge temperature. 17. The system of claim 16, wherein the control unit is configured for determining a degree of system subcooling from the saturated discharge temperature.
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