Refrigeration machine and operating method for it
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F25D-021/00
F25D-021/06
F25B-047/00
F25B-025/00
출원번호
US-0310340
(2007-08-07)
등록번호
US-8601831
(2013-12-10)
우선권정보
DE-10 2006 040 380 (2006-08-29)
국제출원번호
PCT/EP2007/058163
(2007-08-07)
§371/§102 date
20090220
(20090220)
국제공개번호
WO2008/025650
(2008-03-06)
발명자
/ 주소
Fotiadis, Panagiotis
Ihle, Hans
출원인 / 주소
BSH Bosch und Siemens Hausgeraete GmbH
대리인 / 주소
Howard, James E.
인용정보
피인용 횟수 :
0인용 특허 :
15
초록
A refrigeration machine for a domestic refrigerator includes a compressor, a condenser and an evaporator, which are connected to form a refrigerant circuit, wherein a stop valve is arranged in a refrigerant path from the condenser to the evaporator.
대표청구항▼
1. A refrigerating machine comprising: a refrigerant circuit havinga compressor;a condenser;a restrictor;an evaporator, the compressor, the condenser, the restrictor, and the evaporator being operatively connected to one another; anda stop valve disposed in a refrigerant path extending from the cond
1. A refrigerating machine comprising: a refrigerant circuit havinga compressor;a condenser;a restrictor;an evaporator, the compressor, the condenser, the restrictor, and the evaporator being operatively connected to one another; anda stop valve disposed in a refrigerant path extending from the condenser to the evaporator; anda control unit that controls the stop valve, the control unit being configured to open the stop valve a plurality of times during a single defrosting operation and close the stop valve a plurality of times during the single defrosting operation, the single defrosting operation being performed only when the compressor is switched off;wherein the refrigerating machine is configured such that a refrigerant flows from the condenser to the evaporator during the single defrost operation through the stop valve and the restrictor, andthe opening and closing of the stop valve a plurality of times during the single defrosting operation allows the refrigerant to heat up in the condenser during the times when the stop valve is closed, and allows the heated refrigerant to flow into the evaporator when the stop valve is open. 2. The refrigerating machine according to claim 1, wherein the control unit is configured to close the stop valve occasionally when the compressor is switched off, open the stop valve occasionally when the compressor is switched off, and open the stop valve when the compressor is switched on. 3. The refrigerating machine according to claim 1 and further comprising an icing sensor disposed on the evaporator, the icing sensor being operatively connected to the control unit. 4. The refrigerating machine according to claim 1 and further comprising an electric heating apparatus operatively associated with the evaporator. 5. The refrigerating machine according to claim 1 and further comprising a restrictor disposed in the refrigerant path from the stop valve to the evaporator. 6. A domestic refrigerating appliance comprising: a refrigerating machine including a refrigerant circuit havinga compressor;a condenser;a restrictor,an evaporator, the compressor, the condenser, the restrictor, and the evaporator being operatively connected to one another; anda stop valve disposed in a refrigerant path extending from the condenser to the evaporator; anda control unit that controls the stop valve, the control unit being configured to open the stop valve a plurality of times during a single defrosting operation and close the stop valve a plurality of times during the single defrosting operation, the single defrosting operation being performed only when the compressor is switched off,wherein the refrigerating machine is configured such that a refrigerant flows from the condenser to the evaporator during the single defrost operation through the stop valve and the restrictor, andthe opening and closing of the stop valve a plurality of times during the single defrosting operation allows the refrigerant to heat up in the condenser when the valve is closed, and permits the heated refrigerant to flow into the evaporator when the valve is open. 7. A method for operating a refrigerating machine having a compressor, a condenser, a restrictor, and an evaporator operatively connected to one another thereby forming a refrigerant circuit, a stop valve disposed in a refrigerant path extending from the condenser to the evaporator, and a control unit, the method comprising: switching off the compressor,controlling the stop valve with the control unit such that the stop valve is opened a plurality of times during a single defrosting operation and the stop valve is closed a plurality of times during the single defrosting operation,flowing a refrigerant from the condenser to the evaporator during the single defrost operation through the stop valve and the restrictor when the stop valve is open, andretaining the refrigerant in the condenser during the single defrost operation to absorb ambient heat when the stop valve is closed. 8. The method according to claim 7 wherein the defrosting operation is carried out at regular intervals. 9. The method according to claim 8 and further comprising monitoring an icing of the evaporator and performing the defrosting operation if a predetermined amount of evaporator icing is detected. 10. The refrigerating machine according to claim 1 and further comprising a timer operatively connected to the control unit. 11. The domestic refrigerating appliance according to claim 6, wherein the control unit is configured to close the stop valve occasionally when the compressor is switched off, open the stop valve occasionally when the compressor is switched off, and open the stop valve when the compressor is switched on. 12. The domestic refrigerating appliance according to claim 6 and further comprising an icing sensor disposed on the evaporator, the icing sensor being operatively connected to the control unit. 13. The domestic refrigerating appliance according to claim 6 and further comprising a timer operatively connected to the control unit. 14. The domestic refrigerating appliance according to claim 6 and further comprising an electric heating apparatus operatively associated with the evaporator. 15. The domestic refrigerating appliance according to claim 6 and further comprising a restrictor disposed in the refrigerant path from the stop valve to the evaporator. 16. The method according to claim 7, wherein the stop valve is closed occasionally when the compressor is switched off, the stop valve is opened occasionally when the compressor is switched off, and the stop valve is opened when the compressor is switched on. 17. The method according to claim 7, wherein icing of the evaporator is sensed by an icing sensor disposed on the evaporator, the icing sensor being operatively connected to the control unit. 18. The method according to claim 7, wherein the controlling of the stop valve is determined by a timer operatively connected to the control unit. 19. The method according to claim 7 and further comprising heating the evaporator with an electric heating apparatus operatively associated with the evaporator. 20. The method according to claim 7 and further comprising restricting a flow of refrigerant from the stop valve to the evaporator with a restrictor disposed in the refrigerant path from the stop valve to the evaporator.
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이 특허에 인용된 특허 (15)
Schilling Ronald W. (2282 E. Larpenter Ave. Maplewood MN 55109) Miller Vincent (1266 Halper Pl. White Bear Lake MN 55110), Apparatus and method for refrigerant fluid leak prevention.
Schenk, Dennis G.; Wisnoski, John R.; Diekman, David A.; Kuehl, Steven J., Multi-compartment refrigerator control algorithm for variable speed evaporator fan motor.
Alley Robert P. (Onondaga NY) Pohl Walter J. (Louisville KY) Relyea John W. (Onondaga NY), Two stage control circuit for reversible air cycle heat pump.
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