[특허]Method and control system for protecting an evaporator in a refrigeration system against freezeups

Method and control system for protecting an evaporator in a refrigeration system against freezeups 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F25D-017/02
출원번호	US-0597332 (1984-04-06)
발명자 / 주소	Lord, Richard G. Nieva, Kenneth J.
출원인 / 주소	Carrier Corporation
대리인 / 주소	Kelly, Robert H.
인용정보	피인용 횟수 : 44 인용 특허 : 0

초록 ▼

A method and control system are disclosed for operating a refrigeration system to protect an evaporator in a refrigeration system against freezeups of a heat transfer fluid cooled in the evaporator by operation of the refrigeration system. A first signal indicative of the temperature of the heat transfer fluid in the evaporator and a second signal indicative of the temperature of the heat transfer fluid leaving the evaporator are provided to a microcomputer system which processes the first and second signals to determine when the temperature of the heat transfer fluid in the evaporator falls below the temperature of the heat transfer fluid leaving the evaporator by a selected amount. The microcomputer system generates an alarm signal to shut down operation of the refrigeration system if the microcomputer system determines that the temperature of the heat transfer fluid in the evaporator is less than the temperature of the heat transfer fluid leaving the evaporator by the selected amount.

대표청구항 ▼

1. A method of operating a refrigeration system having an evaporator for cooling a heat transfer fluid passed through the evaporator, comprising: determining the temperature of the heat transfer fluid in the evaporator and the temperature of the heat transfer fluid leaving the evaporator; and shutting down operation of the refrigeration system when the temperature of the heat transfer fluid in the evaporator is less than the temperature of the heat transfer fluid leaving the evaporator by a preselected amount. 2. A method of operating a refrigeration system having an evaporator for cooling a heat transfer fluid passed through the evaporator, comprising: sensing the temperature of the heat transfer fluid in the evaporator; sensing the temperature of the heat transfer fluid leaving the evaporator; comparing the sensed temperatures to determine when the temperature of the heat transfer fluid in the evaporator is less than the temperature of the heat transfer fluid leaving the evaporator by a selected amount; and shutting down operation of the refrigeration system when the temperature of the heat transfer fluid in the evaporator is less than the temperature of the heat transfer fluid leaving the evaporator by the selected amount as determined by the step of comparing. 3. A control system for a refrigeration system having an evaporator for cooling a heat transfer fluid passed through the evaporator, comprising: means for determining the temperature of the heat transfer fluid in the evaporator and the temperature of the heat transfer fluid leaving the evaporator; and means for shutting down operation of the refrigeration system when the temperature of the heat transfer fluid in the evaporator is less than the temperature of the heat transfer fluid leaving the evaporator by a preselected amount. 4. A control system for a refrigeration system having an evaporator for cooling a heat transfer fluid passed through the evaporator, comprising: first sensor means for sensing the temperature of the heat transfer fluid in the evaporator and for generating a first signal indicative of this sensed temperature; second sensor means for sensing the temperature of the heat transfer fluid leaving the evaporator and for providing a second signal indicative of this sensed temperature; processor means for receiving the first and second signals from the first sensor means and second sensor means, respectively, for processing the first and second signals and for generating an alarm signal when the temperature of the first signal is less than the second signal by a preselected amount; and means for shutting down operation of the refrigeration system in response to generation of an alarm signal by the processor means.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
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연합인증

Method and control system for protecting an evaporator in a refrigeration system against freezeups 원문보기

초록 ▼

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Method and control system for protecting an evaporator in a refrigeration system against freezeups 원문보기

초록 ▼

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이 특허를 인용한 특허 (44)

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