Refrigerating system having two evaporators performing heat exchange
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F25B-041/00
F25B-001/00
F25B-039/02
F25D-011/02
F25D-017/06
출원번호
US-0601145
(2007-12-14)
등록번호
US-8978410
(2015-03-17)
우선권정보
KR-10-2007-0051102 (2007-05-25)
국제출원번호
PCT/KR2007/006549
(2007-12-14)
§371/§102 date
20091120
(20091120)
국제공개번호
WO2008/147007
(2008-12-04)
발명자
/ 주소
Oh, Min-Kyu
Song, Gye-Young
Lee, Nam-Gyo
출원인 / 주소
LG Electronics Inc.
대리인 / 주소
Ked & Associates, LLP
인용정보
피인용 횟수 :
1인용 특허 :
1
초록▼
A refrigerating system is provided in which a heat exchanging unit performs heat exchange between first and second evaporators, so that the first and second evaporators have similar temperatures, and so that an additional “pump-down” operation may be avoided, thereby reducing compressor losses due t
A refrigerating system is provided in which a heat exchanging unit performs heat exchange between first and second evaporators, so that the first and second evaporators have similar temperatures, and so that an additional “pump-down” operation may be avoided, thereby reducing compressor losses due to discharge occurrences. Since the additional pump-down operation may be avoided, power consumption may be reduced, and reliability and efficiency of the system may be enhanced. Additionally, a backflow preventing unit for preventing backflow of refrigerant in an evaporator may not be required, thus further reducing fabrication cost and complexity.
대표청구항▼
1. A refrigerating system for providing cooling to a plurality of cooling spaces, the plurality of cooling spaces comprising a freezing chamber to maintain food items in a frozen state and a refrigerating chamber to maintain food items in a refrigerated state, the refrigerating system comprising: a
1. A refrigerating system for providing cooling to a plurality of cooling spaces, the plurality of cooling spaces comprising a freezing chamber to maintain food items in a frozen state and a refrigerating chamber to maintain food items in a refrigerated state, the refrigerating system comprising: a first cycle for circulating a refrigerant discharged from a compressor through a first evaporator disposed in the freezing chamber, wherein the first evaporator is configured to supply cooling air to the freezing chamber;a second cycle, independent from the first cycle, for circulating the refrigerant through a second evaporator disposed in the refrigerating chamber, wherein the second evaporator is configured to supply cooling air to the refrigerating chamber;a refrigerant supply device disposed downstream of a condenser and alternately supplying the refrigerant to the first cycle and the second cycle independently such that the refrigerant does not pass through the first evaporator and the second evaporator simultaneously;a first blowing fan disposed at one side of the first evaporator;a second blowing fan disposed at one side of the second evaporator; anda heat exchanging device that performs heat exchange between the first and second evaporators, wherein the heat exchanging device includes a protrusion provided on the first evaporator, wherein the protrusion extends from the first evaporator into the refrigerating chamber to a position proximate the second evaporator such that the refrigerant remaining in the first evaporator is vaporized by a temperature difference between the first evaporator and the second evaporator, and wherein the protrusion comprises a pipe that extends from a part of an outlet of the first evaporator to the position proximate the second evaporator and back to the first evaporator such that the refrigerant remaining in the outlet of the first evaporator is vaporized by the temperature difference between the first and second evaporators and the refrigerant remaining in the first evaporator is collected to the compressor without a pump down operation to collect the refrigerant remaining in the first and second evaporators to the compressor in a state in which the refrigerant supply from the compressor to the first and second evaporators is blocked. 2. The refrigerating system of claim 1, wherein the protrusion is positioned near an outlet of the second evaporator. 3. A refrigerating system, comprising: a refrigerant supply device provided downstream of a condenser and alternately supplying a refrigerant to a first cycle and to a second cycle independently such that the refrigerant does not pass through the first cycle and the second cycle simultaneously, the first cycle circulating the refrigerant discharged from a compressor through a first evaporator provided to cool a freezing chamber to maintain food items in a frozen state, and the second cycle circulating the refrigerant received from the refrigerant supply device through a second evaporator provided to cool a refrigerating chamber to maintain food items in a refrigerated state, the refrigerating chamber partitioned from the freezing chamber;a first blowing fan disposed at one side of the first evaporator;a second blowing fan disposed at one side of the second evaporator; anda heat exchanging device that performs heat exchange between the first and second evaporators, wherein the heat exchanging device includes a protrusion provided on the second evaporator, wherein the protrusion extends from an outlet of the second evaporator in the refrigerating chamber and into the freezing chamber so as to be positioned near the first evaporator such that the refrigerant remaining in the first evaporator is vaporized by a temperature difference between the first evaporator and the second evaporator, and collected to the compressor without a pump down operation to collect the refrigerant remaining in the first and second evaporators to the compressor in a state in which the refrigerant supply from the compressor to the first and second evaporators is blocked. 4. The refrigerating system of claim 3, wherein the protrusion is positioned near an outlet of the first evaporator. 5. The refrigerating system of claim 1, wherein the heat exchanging device is formed such that an outlet side refrigerant pipe of the second evaporator is wound around the first evaporator one or more times. 6. The refrigerating system of claim 5, wherein the refrigerant pipe of the second evaporator is wound around an outlet of the first evaporator one or more times. 7. The refrigerating system of claim 1, wherein the heat exchanging device is formed such that an outlet side refrigerant pipe of the second evaporator is wound around an outlet side refrigerant pipe of the first evaporator one or more times. 8. The refrigerating system of claim 1, wherein the heat exchanging device is formed such that an outlet side refrigerant pipe of the first evaporator is wound around the second evaporator one or more times. 9. The refrigerating system of claim 1, wherein the heat exchanging device is formed such that an outlet side refrigerant pipe of the first evaporator is wound around an outlet side refrigerant pipe of the second evaporator one or more times. 10. A refrigerator, comprising: a refrigerator main body having a freezing chamber to maintain food items in a frozen state and a refrigerating chamber to maintain food items in a refrigerated state, the refrigerating chamber partitioned from the freezing chamber,a first evaporator disposed in the freezing chamber, that generates cooling air for the freezing chamber;a second evaporator disposed in the refrigerating chamber, that generates cooling air for the refrigerating chamber;a compressor disposed in the refrigerator main body to compress a refrigerant;a first cycle to circulate the refrigerant discharged from the compressor via the first evaporator;a second cycle to circulate the refrigerant discharged from the compressor via the second evaporator;a refrigerant supply device positioned downstream of a condenser and independently connected to an inlet and an outlet of each of the first cycle and the second cycle to selectively introduce the refrigerant into the first cycle and the second cycle, such that the refrigerant does not pass through the first evaporator and the second evaporator simultaneously;a first blowing fan disposed at one side of the first evaporator;a second blowing fan disposed at one side of the second evaporator; anda heat exchange device having a protrusion that extends from an outlet of one of the first evaporator or the second evaporator to be received in a chamber in which the other of the first evaporator or the second evaporator is disposed, the protrusion comprising a pipe that extends from a part of the outlet of the one of the first evaporator or the second evaporator to the other of the first evaporator or the second evaporator and then back to the one of the first evaporator or the second evaporator such that the refrigerant flowing in the protrusion performs heat-exchange with the other of the first evaporator or the second evaporator such that the refrigerant remaining in the first evaporator is vaporized by a temperature difference between the first evaporator and the second evaporator and collected to the compressor without a pump down operation to collect the refrigerant remaining in the first and second evaporators to the compressor in a state in which the refrigerant supply from the compressor to the first and second evaporators is blocked. 11. The refrigerator of claim 10, wherein the protrusion comprises a first protruding portion formed by extending a part of the first evaporator, and wherein the first protruding portion is located adjacent to the second evaporator. 12. The refrigerator of claim 11, wherein the first protruding portion is located adjacent to the outlet of the second evaporator. 13. The refrigerator of claim 10, wherein the protrusion comprises a second protruding portion formed by extending a part of the second evaporator, and wherein the second protruding portion is located adjacent to the first evaporator. 14. The refrigerator of claim 13, wherein the second protruding portion is located adjacent to the outlet of the first evaporator.
Chae, Su Nam; Kim, Kyeong Yun; Lee, Jang Seok; Oh, Min Kyu; Lee, Youn Seok, Refrigerator having cold air generating compartment and machine room positioned at upper portion of cabinet.
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