Method for defrost control of a refrigerator and refrigerator which uses this method
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F25D-021/06
F25D-021/00
F25D-017/00
출원번호
US-0989423
(2009-04-17)
등록번호
US-8511102
(2013-08-20)
우선권정보
CN-2008 1 0025191 (2008-04-29)
국제출원번호
PCT/EP2009/054612
(2009-04-17)
§371/§102 date
20101025
(20101025)
국제공개번호
WO2009/132971
(2009-11-05)
발명자
/ 주소
Feng, Junhong
Zhou, Xiaotian
Zhu, Qiwu
Zhu, Weizhong
출원인 / 주소
BSH Bosch und Siemens Hausgeraete GmbH
대리인 / 주소
Howard, James E.
인용정보
피인용 횟수 :
3인용 특허 :
5
초록▼
A method for defrost control of a refrigerator having a refrigeration and defrost system that includes a compressor, an evaporator, an evaporator fan and a heater. The refrigerator also has a control system to control the operation of the refrigerator. The method includes stopping the compressor ope
A method for defrost control of a refrigerator having a refrigeration and defrost system that includes a compressor, an evaporator, an evaporator fan and a heater. The refrigerator also has a control system to control the operation of the refrigerator. The method includes stopping the compressor operation; starting a defrost process; starting the heater; maintaining a start state over a preset period of time; closing off the heater; and starting the compressor. After starting the compressor and before the evaporator fan is started to perform the refrigeration operation, the evaporator fan is operated at least once briefly and intermittently.
대표청구항▼
1. A method for defrost control of a refrigerator having a refrigeration and defrost system that includes a compressor, an evaporator, an evaporator fan having fan blades and located in an evaporator chamber, a heater, and a control system to control refrigerator operation, the method comprising: st
1. A method for defrost control of a refrigerator having a refrigeration and defrost system that includes a compressor, an evaporator, an evaporator fan having fan blades and located in an evaporator chamber, a heater, and a control system to control refrigerator operation, the method comprising: stopping compressor operation;starting a defrost process;starting the heater;maintaining a start state over a first preset period of time;closing off the heater; andstarting the compressor;wherein, after starting the compressor and before starting the evaporator fan to perform the refrigeration operation, the evaporator fan is operated at least once briefly and intermittently at a speed such that water droplets on the fan blades and an inner wall of the evaporator chamber are ejected from the fan blades and the evaporator chamber. 2. The method of claim 1, wherein the step of starting the defrost process includes: stopping the compressor operation;starting the evaporator fan and maintaining operation over a second preset period of time;stopping operation of the evaporator fan and maintaining a stopped state of the evaporator fan over a third preset period of time; andstarting the heater. 3. The method of claim 1, wherein the step of starting the compressor includes: closing off the heater;stopping the refrigeration system for a fourth preset period of time; andstarting the compressor at an end of the preset stoppage period. 4. The method of claim 1, wherein the step of operating the evaporator fan at least once briefly and intermittently includes: after the compressor starts, keeping the evaporator fan stopped for a fifth preset period of time;starting the evaporator fan and operating the evaporator fan briefly for a sixth preset period of time;stopping the evaporator fan and maintaining a stopped state of the evaporator fan for a seventh preset period of time; andevaluating whether it is necessary to start the evaporator fan briefly once again. 5. The method of claim 4, wherein the sum of the fifth, sixth, and seventh periods of time period is between 5 seconds and 30 seconds. 6. The method of claim 1, wherein the control system includes an evaporator sensor to check an evaporator temperature and a storage compartment sensor to check a storage compartment temperature, and a condition for the starting of the evaporator fan to perform the refrigeration operation is that the evaporator temperature measured by the evaporator sensor is lower than the storage compartment temperature measured by the storage compartment sensor. 7. The method of claim 6, wherein the evaporator is a freezer compartment evaporator and the evaporator fan is a freezer compartment evaporator fan. 8. A refrigerator, comprising: a cabinet with a storage compartment;a refrigeration and defrost system; anda control apparatus to control the refrigeration and defrost system,wherein the refrigeration and defrost system includes a compressor, an evaporator, an evaporator fan having fan blades and being located in an evaporator chamber, and a heater,the control apparatus includes an evaporator sensor to check an evaporator temperature and a storage compartment sensor to check a storage compartment temperature, andafter completion of a defrost cycle and before the evaporator fan is started to perform the refrigeration operation, the control apparatus sets the evaporator fan in operation briefly and intermittently for a preset period of time at a speed sufficient to eject from the fan blades and the evaporator chamber water droplets on the fan blades and on inner walls of the evaporator chamber. 9. The refrigerator of claim 8, wherein a length of the preset time period for the brief and intermittent operation is 5 seconds to 30 seconds. 10. The refrigerator of claim 8, wherein the evaporator is a freezer compartment evaporator and the evaporator fan is a freezer compartment evaporator fan. 11. The refrigerator of claim 8, wherein a condition for starting the evaporator fan to perform the refrigeration operation is that the evaporator temperature measured by the evaporator sensor is lower than the storage compartment temperature measured by the storage compartment sensor. 12. The refrigerator of claim 11, wherein the evaporator fan is disposed horizontally above the evaporator.
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이 특허에 인용된 특허 (5)
Collins, Martin, Adaptive defrost control device and method.
Härlen, Jochen; Sert, Birtan; Sperling, Alex; Ziegler, Nikolaus, Refrigeration device having automatic defrosting and method for operating a refrigeration device of this type.
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