Power interrupt system for a refrigerated appliance
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F25B-049/02
출원번호
US-0385519
(2003-03-12)
발명자
/ 주소
Miller, Alvin V.
Ryner, Joseph H.
VanMeter, Kyle B.
Wetekamp, Robert L.
출원인 / 주소
Maytag Corporation
대리인 / 주소
Diederiks & Whitelaw, PLC
인용정보
피인용 횟수 :
6인용 특허 :
12
초록▼
A refrigerated appliance includes a power interrupt system for detecting an out-of-range temperature condition in a fresh food or freezer compartment after a power interruption. The power interrupt system includes a central processor including a memory storage module and a plurality of temperature s
A refrigerated appliance includes a power interrupt system for detecting an out-of-range temperature condition in a fresh food or freezer compartment after a power interruption. The power interrupt system includes a central processor including a memory storage module and a plurality of temperature sensors. In operation, the power interrupt system compares sensed temperature values with stored temperature variables. If, after a power interruption, a compartment temperature exceeds a stored temperature variable by a defined amount, an over-temperature flag is triggered. Preferably, a display unit flashes an indication of the highest temperature reached by each compartment intermittently with the current compartment temperatures and an indication that a power interruption has occured. In this manner, a consumer can make an informed determination whether food stored within the appliance has been exposed to temperatures high enough to cause spoilage.
대표청구항▼
1. A method of detecting an over-temperature condition in fresh food and freezer compartments of a refrigerator after a power interruption comprising:initializing, in a first variable set, values being defined by an interrupt temperature for each of the fresh food and freezer compartments;setting a
1. A method of detecting an over-temperature condition in fresh food and freezer compartments of a refrigerator after a power interruption comprising:initializing, in a first variable set, values being defined by an interrupt temperature for each of the fresh food and freezer compartments;setting a second variable set as the value of the current sensed temperature for each of the fresh food and freezer compartments;detecting the power interruption and subsequent re-initialization of power to the refrigerator;sensing a post power interrupt temperature for each of the fresh food and freezer compartments;establishing the over-temperature condition if either the fresh food or freezer compartment post interrupt temperature exceeds the values established in either the first or second variable sets by respective predetermined amounts; andproviding an indication when the over-temperature condition exists. 2. The method according to claim 1, wherein the interrupt temperature is defined by a lowest possible set point temperature for the fresh food and freezer compartments respectively. 3. The method according to claim 1, further comprising: establishing the over-temperature condition if either the fresh food or freezer compartment post power interrupt temperature exceeds the values of the first variable set by at least 3° F. 4. The method according to claim 1, further comprising: establishing the over-temperature condition if the post power interrupt temperature for either the fresh food or freezer compartment exceeds the value of the second variable set by at least 2° F. 5. The method according to claim 1, wherein providing the indication of the over-temperature condition comprises intermittently flashing a visual indication of the over-temperature condition on a display console. 6. The method according to claim 1, wherein providing the indication of the over-temperature condition comprises sounding an audible alarm. 7. The method according to claim 1, wherein providing the indication of the over-temperature condition constitutes providing a visual indication of the highest temperature reached within each of the respective fresh food and freezer compartments, resulting from the power interruption, on a display console. 8. The method according to claim 7, further comprising: displaying an indication of the current temperature within each of the respective fresh food and freezer compartments on the display console. 9. The method according to claim 1, further comprising: replacing the values in the first variable set with the respective post power interrupt temperatures. 10. The method according to claim 1, further comprising:continuously monitoring each of the fresh food and freezer compartments for the occurrence of the over-temperature condition. 11. The method according to claim 1, further comprising: resetting the variables stored in the first and second variable sets. 12. A method of detecting an over-temperature condition in a refrigerator having fresh food and freezer compartments after a power interruption comprising:initializing, in a first variable set, a value being defined by an interrupt temperature for at least one of the fresh food and freezer compartments;setting a second variable set as a value of a current sensed temperature for the at least one of the fresh food and freezer compartments;detecting the power interruption and subsequent re-initialization of power to the refrigerator;sensing a post power interrupt temperature for the at least one of the fresh food and freezer compartments;establishing the over-temperature condition if the post interrupt temperature exceeds the values established in either the first or second variable sets by respective predetermined amounts;replacing the value in the first variable set with the post power interrupt temperature; andproviding an indication of the over-temperature condition. 13. The method according to claim 12, wherein the interrupt temperature is defined by a low est possible set point temperature for the at least one of the fresh food and freezer compartments. 14. The method according to claim 12, further comprising:establishing the over-temperature condition if the post power interrupt temperature exceeds the value stored in the first variable set by at least 3° F. 15. The method according to claim 12, further comprising:establishing the over-temperature condition if the post power interrupt temperature exceeds the value stored in the second variable set by at least 2° F. 16. The method according to claim 12, wherein providing the indication of the over-temperature condition comprises intermittently flashing a visual indication of the over-temperature condition on a display console. 17. The method according to claim 12, wherein providing the indication of the over-temperature condition comprises sounding an audible alarm. 18. The method according to claim 12, wherein providing the indication of the over-temperature condition constitutes visually displaying a highest temperature reached within the at least one of the fresh food and freezer compartments resulting from the power interrupt. 19. The method according to claim 12, further comprising:continuously monitoring the at least one of the fresh food and freezer compartments for the occurrence of the over-temperature condition. 20. The method according to claim 12, further comprising: resetting the variables stored in the first and second variable sets.
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이 특허에 인용된 특허 (12)
Janke Donald E. (Benton Township ; Berrien County MI) Linstromberg William J. (Lincoln Township ; Berrien County MI), Alarm for a refrigerator.
Nam Young K. (513 Seongnam-Dong Seongnam City Kyunggi-Do KRX) Lee Seung J. (Bupyung Apt. 9-203 98-64 Bupyung 5-Dong ; Buk-Ku Incheon KRX), System and method for monitoring temperature.
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