Air conditioner and method of detecting refrigerant leakage therein
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F25B-045/00
G01K-013/00
출원번호
US-0295961
(2002-11-18)
우선권정보
KR-0023992 (2002-05-01)
발명자
/ 주소
Seo, Hyeong-Joon
Jung, Gyoo-Ha
출원인 / 주소
Samsung Electronics Co., Ltd.
대리인 / 주소
Staas & Halsey LLP
인용정보
피인용 횟수 :
4인용 특허 :
6
초록▼
An air conditioner and method of detecting a refrigerant leakage in the air conditioner in which the entire refrigerant pipe of the air conditioner is sectioned based on expansion valves into a plurality of sections, the sections are checked one by one to quickly detect a refrigerant leakage from th
An air conditioner and method of detecting a refrigerant leakage in the air conditioner in which the entire refrigerant pipe of the air conditioner is sectioned based on expansion valves into a plurality of sections, the sections are checked one by one to quickly detect a refrigerant leakage from the sections and an exact position of a broken or loosened area of the refrigerant pipe causing such a refrigerant leakage is found. In the method of detecting a refrigerant leakage in the air conditioner, comprising a compressor, an expansion valve, an outdoor heat exchanger, and an indoor heat exchanger connected to one another by a refrigerant pipe, the refrigerant pipe is sectioned into a high pressure section extending from the outlet port of the compressor to the inlet port of the expansion valve, and a low pressure section extending from the outlet port of the expansion valve to the inlet port of the compressor. A pressure sensor is provided on the refrigerant pipe within the low pressure section. A control unit detects a refrigerant leakage in the low pressure section by comparing a variation in refrigerant pressure sensed by the pressure sensor with a preset variation in the refrigerant pressure in accordance with a normal operation without the refrigerant pipe having a refrigerant leakage, during a refrigerant leakage detection mode.
대표청구항▼
An air conditioner and method of detecting a refrigerant leakage in the air conditioner in which the entire refrigerant pipe of the air conditioner is sectioned based on expansion valves into a plurality of sections, the sections are checked one by one to quickly detect a refrigerant leakage from th
An air conditioner and method of detecting a refrigerant leakage in the air conditioner in which the entire refrigerant pipe of the air conditioner is sectioned based on expansion valves into a plurality of sections, the sections are checked one by one to quickly detect a refrigerant leakage from the sections and an exact position of a broken or loosened area of the refrigerant pipe causing such a refrigerant leakage is found. In the method of detecting a refrigerant leakage in the air conditioner, comprising a compressor, an expansion valve, an outdoor heat exchanger, and an indoor heat exchanger connected to one another by a refrigerant pipe, the refrigerant pipe is sectioned into a high pressure section extending from the outlet port of the compressor to the inlet port of the expansion valve, and a low pressure section extending from the outlet port of the expansion valve to the inlet port of the compressor. A pressure sensor is provided on the refrigerant pipe within the low pressure section. A control unit detects a refrigerant leakage in the low pressure section by comparing a variation in refrigerant pressure sensed by the pressure sensor with a preset variation in the refrigerant pressure in accordance with a normal operation without the refrigerant pipe having a refrigerant leakage, during a refrigerant leakage detection mode. ble geometry ejector receives said needle extending into a nozzle area, wherein high pressure air from said primary inlet is contained therein, said needle is actuated by said piston and sets the nozzle area to control the high pressure flow rate into said mixing section, wherein low pressure air from said secondary inlet is drawn and allowed to mix in said mixing section with said high pressure nozzle flow forming an ejector exit mixed flow; and said ejector exit mixed flow is drawn from said upstream end of said diffuser to said downstream end of said diffuser and allowed to flow to an opening and said diffuser feedback port, wherein air drawn to said diffuser feedback port is drawn to said actuator port and introduced to said ejector needle valve actuator as pressure to actuate said piston against said biasing force of said at least one spring in said ambient air pressure equalized compartment. 2. A system as in claim 1, further comprising a first seal ring interposed between said ejector needle valve actuator and said piston. 3. A system as in claim 1, further comprising a second seal ring interposed between said ejector needle valve actuator and said needle. 4. A system as in claim 1, wherein said high pressure air is of a pressure between 10 and 200 psig. 5. A system as in claim 1, wherein said high pressure air has a flow between 0 and 30 ppm. 6. A system as in claim 1, wherein said low pressure is of a pressure between 0 and 40 psig. 7. A system as in claim 1, wherein said low pressure air has a flow between 0 and 30 ppm. 8. A system as in claim 1, wherein the temperature is between -40 and 800° F. 9. A system for bleeding air from a compressor in an engine comprising: a primary inlet; a secondary inlet; a variable geometry ejector for introducing air from said primary inlet; a mixing section for mixing said introduced air from said primary inlet with air from said secondary inlet; a diffuser downstream from said mixing section with an upstream end and a downstream end; a tube comprised of a diffuser feedback port and an actuator port, wherein said diffuser feedback port is in communication with said downstream end of said diffuser and said actuator port is in communication with an ejector needle valve actuator; said ejector needle valve actuator is comprised of a needle connected to a piston, and at least one spring for providing biasing force against said piston, said at least one spring located in an ambient air pressure equalized compartment having a vent to ambient air pressure, said ambient air pressure separate and distinct from air flow related to said primary and secondary inlets; said variable geometry ejector receives said needle extending into a nozzle area of a valve, wherein high pressure air introduced from said primary inlet at a flow between 0 and 30 ppm and a pressure between 10 and 200 psig is contained, said needle, actuated by said piston, sets the nozzle area of said valve to control the high pressure flow rate into said mixing section, wherein low pressure air is led from said secondary inlet at a flow between 0 and 30 ppm and pressure between 0 and 40 psig to said mixing section and allowed to mix with said high pressure nozzle flow to form an ejector exit mixed flow; and said ejector exit mixed flow is drawn from said upstream end of said diffuser to said downstream end of diffuser and allowed to flow through an opening to a prioritization valve/NBC system and said diffuser feedback port, wherein air drawn to said diffuser feedback port is drawn to said actuator port and introduced to said ejector needle valve actuator as pressure to actuate said piston against said biasing force of said at least one spring in said ambient air pressure equalized compartment. 10. A system as in claim 9, further comprising a first seal ring interposed between said ejector needle valve actuator and said piston. 11. A system as in claim 9, further comprising a second seal ring interposed between sa id ejector needle valve actuator and said needle. 12. A system as in claim 9, wherein the temperature is between -40 and 800° F. 13. A system as in claim 9, wherein said primary inlet has an outside diameter between 0.1 and 6 inches. 14. A system as in claim 9, wherein said primary inlet has an inside diameter between 0.07 and 5.9 inches. 15. An apparatus as in claim 9, wherein said secondary inlet has an outside diameter between 0.15 and 9 inches. 16. An apparatus as in claim 9, wherein said secondary inlet has an inside diameter between 0.12 and 8.8 inches. 17. An apparatus as in claim 16, wherein said secondary inlet has an outside diameter between 0.15 and 9 inches. 18. An apparatus as in claim 16, wherein said secondary inlet has an inside diameter between 0.12 and 8.8 inches. 19. An apparatus for bleeding air from a compressor in an engine comprising: a primary inlet; a secondary inlet; a variable geometry ejector for introducing air from said primary inlet; a mixing section for mixing said introduced air from said primary inlet with air from said secondary inlet; a diffuser downstream from said mixing section with an upstream end and a downstream end; a tube comprised of a diffuser feedback port and an actuator port, wherein said diffuser feedback port is in communication with said downstream end of said diffuser and said actuator port is in communication with an ejector needle valve actuator, wherein said ejector needle valve actuator is comprised of a needle attached to a piston; a first seal ring and a second seal ring, wherein said first seal ring in interposed between said ejector needle valve actuator and said piston, and said second seal ring is interposed between said needle and said ejector needle valve actuator; at least one spring located in an ambient air pressure equalized compartment defined by an area enclosed between said first and second seal rings and having a vent to ambient air pressure, said ambient air pressure separate and distinct from air flow related to said primary and secondary inlets, wherein said at least one spring is in communication with said piston; said variable geometry ejector receives said needle extending into a nozzle area of a valve actuator, wherein high pressure air introduced from said primary inlet at a flow between 0 and 30 ppm and a pressure between 10 and 200 psig is contained, said needle, actuated by said piston, sets the nozzle area of the valve to control the high pressure flow rate into a mixing section, wherein low pressure air is led from said secondary inlet at a flow between 0 and 30 ppm and pressure between 0 and 40 psig to said mixing section and allowed to mix with said high pressure nozzle flow forming a ejector exit mixed flow, said ejector exit mixed flow being varied integrally; and said ejector exit mixed flow is drawn from said upstream end of said diffuser to said downstream end of diffuser and allowed to flow through an opening to a prioritization valve/NBC system and said diffuser feedback port, wherein air drawn to said diffuser feedback port is drawn to said actuator port and introduced to said ejector needle valve actuator as pressure to actuate said piston against a biasing force of said at least one spring in said ambient air pressure equalized compartment. 20. An apparatus as in claim 19, wherein the temperature is between -40 and 800° F. 21. An apparatus as in claim 19, wherein said primary inlet has an outside diameter between 0.1 and 6 inches. 22. An apparatus as in claim 19, wherein said primary inlet has an inside diameter between 0.09 and 5.9 inches. 23. A method for bleeding air from a multi-stage compressor in an engine comprising: allowing high pressure air to flow through a primary inlet to a nozzle area, wherein a portion of a needle is contained, and said needle, actuated by a piston, sets the nozzle area of a valve to control the high pressure flow rate into a mixing section; introducing low pressure air to a seco ndary inlet and allowing said low pressure air to flow from said secondary inlet to said mixing section; mixing said high pressure nozzle flow with said low pressure air to create ejector exit mixed flow with a pressure between said high pressure nozzle flow and said low pressure air; allowing said ejector exit mixed flow to flow from the upstream end of a diffuser to the downstream end of said diffuser, wherein a portion of said ejector exit mixed flow is introduced to a diffuser feedback port and the remainder is allowed to flow to an opening; drawing said portion of ejector exit mixed flow introduced to said diffuser feedback port through a tube to the actuator port of said tube and introducing to an ejector needle valve actuator, wherein said needle is partially contained within an ambient air pressure equalized compartment having a vent to ambient air pressure; maintaining an ambient air equalized pressure in said ejector needle valve actuator pressure equalized compartment; and controlling the position of said piston by the difference in force created by at least one spring contained within said pressure equalized compartment in communication with said piston and the static pressure of said ejector exit mixed flow introduced through said actuator port in communication with said piston in said ejector needle valve actuator. 24. A method as in claim 23, wherein said opening is in communication with a prioritization valve. 25. A method as in claim 23, wherein said opening is in communication with a NBC system. 26. A method as in claim 23, wherein said high pressure air is of a pressure between 10 and 200 psig. 27. A method as in claim 23, wherein said high pressure air has a flow between 0 and 30 ppm. 28. A method as in claim 23, wherein said low pressure is of a pressure between 0 and 40 psig. 29. A method as in claim 23, wherein said low pressure air has a flow between 0 and 30 ppm. 30. A method as in claim 23, wherein the temperature is between -40 and 800 ° F.
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이 특허에 인용된 특허 (6)
Wycoff Lyman W. (827 Haymount Dr. Indianapolis IN 46241), Apparatus and method for low refrigerant detection.
Stokes Bennie J. (1031 W. Verdine Sulphur LA 70663) Stokes Dyrell K. (Rte. 3 ; Box 1354 Sulphur LA 70663), Radiator with leak detecting and leak-isolating system.
Porter Kevin J. ; Malone Garret J. ; Dobmeier Thomas J. ; Kopp Peter H. ; Rabbia Mark R., Test for the automated detection of leaks between high and low pressure sides of a refrigeration system.
Scaringe, Robert P.; Roth, Robert Paul; Lambert, Daniel L.; Thomas, Erik P.; Carff, Chad L., Cost-effective remote monitoring, diagnostic and system health prediction system and method for vapor compression and heat pump units based on compressor discharge line temperature sampling.
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