KR20030031540A - Air cycle low temperature refrigerator for warehouse using high speed brushless direct current motor - Google Patents

Air cycle low temperature refrigerator for warehouse using high speed brushless direct current motor Download PDF

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Publication number
KR20030031540A
KR20030031540A KR1020030019766A KR20030019766A KR20030031540A KR 20030031540 A KR20030031540 A KR 20030031540A KR 1020030019766 A KR1020030019766 A KR 1020030019766A KR 20030019766 A KR20030019766 A KR 20030019766A KR 20030031540 A KR20030031540 A KR 20030031540A
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South Korea
Prior art keywords
air
warehouse
high speed
low temperature
centrifugal
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KR1020030019766A
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Korean (ko)
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엄상환
나준용
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(주)범양 유니콜드
엄상환
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Priority to KR1020030019766A priority Critical patent/KR20030031540A/en
Publication of KR20030031540A publication Critical patent/KR20030031540A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
    • F25B9/004—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B31/00—Compressor arrangements
    • F25B31/02—Compressor arrangements of motor-compressor units
    • F25B31/026—Compressor arrangements of motor-compressor units with compressor of rotary type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/025—Motor control arrangements

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

PURPOSE: An air cycle low temperature refrigerator for a warehouse using a high speed BLDC(BrushLess Direct Current) motor is provided to reduce influence on the environment by using air as refrigerant. CONSTITUTION: The refrigerator includes a low temperature warehouse(1); a first centrifugal air compressor(3) compressing air refrigerant introduced from the low temperature warehouse; a high speed BLDC motor(2) driving the first centrifugal air compressor; a first heat exchanger(5) cooling the compressed air refrigerant; a second centrifugal air compressor(7) re-compressing the air refrigerant cooled down by the first heat exchanger; a second heat exchanger(6) cooling down the re-compressed air refrigerant; a radial inflow turbine(8) expanding refrigerant cooled down by the second heat exchanger to additionally cool down and supplying to the low temperature warehouse; and a cooling fan(4) forcibly introduce air contacting with the first heat exchanger and the second heat exchanger to be cooled down from the outside of the warehouse.

Description

고속모타(BLDC)를 적용한 공기 싸이클(cycle) 창고용 저온냉동기{omitted}Low temperature freezer for air cycle warehouse with high speed motor

본 발명은 고속모타를 이용한 공기 싸이클 창고용 저온 냉동기에 관한 것으로, 보다 상세하게는 공기를 냉매로 사용하며 고속모타(BLDC)를 이용하여 이 공기의 흐름 싸이클(cycle)을 적용하여 창고를 냉동시키는 창고용 저온 냉동기에 관한 것이다.The present invention relates to a low temperature freezer for an air cycle warehouse using a high-speed motor, and more particularly, to use the air as a refrigerant and to freeze the warehouse by applying a flow cycle of the air by using a high speed motor (BLDC). A low temperature freezer for warehouses.

일반적으로 저온 창고용 냉동기 내지는 냉동시스템에는 프레온가스 등을 냉매로 사용하는 냉동 싸이클이 이용되는 반면, 항공기용 공기 조화 시스템에는 공기를 냉매로 사용하는 냉동 싸이클을 이용한 냉동기가 이용된다.In general, a refrigeration cycle using a freon gas or the like is used as a refrigeration system or a refrigeration system for a low temperature warehouse, whereas a refrigeration cycle using a refrigeration cycle using air as a refrigerant is used in an air conditioning system for an aircraft.

일반적인 저온 창고용 냉동기와 비교하여 볼 때, 이러한 공기 냉매를 이용하는 냉동기는 그 무게가 가벼울 뿐 아니라, 그 냉매로서 사용되는 공기의 고도에 따른 물성치 변화가 프레온가스 등에 비하여 적으며, 항공기 운행시 고압의 공기가 주엔진의 압축기로부터 용이하게 유입될 수 있는 장점을 갖는다. 또한, 프레온가스 등을 이용하는 냉동기가 대기 성층권의 오존층을 파괴함으로써 환경문제를 유발하는 것과는 달리, 냉매로서 공기를 사용하는 항공기용 냉동기는 냉동 사이클 중에 유해한 물질을 배출하지 않는다.Compared with a general cold storage refrigerator, a refrigerator using such an air coolant is not only light in weight, but also has a small change in physical properties according to the altitude of the air used as the coolant, compared to freon gas. The advantage is that air can be easily introduced from the compressor of the main engine. In addition, unlike a refrigerator using freon gas, which causes an environmental problem by destroying the ozone layer in the atmospheric stratosphere, an aircraft refrigerator using air as a refrigerant does not emit harmful substances during a refrigeration cycle.

따라서 본 발명의 목적은 공기 냉매 싸이클을 이용하고 고속모타(BLDC)를 이용하는 창고용 저온 냉동기를 가능하도록 하는 것이다.It is therefore an object of the present invention to enable a cold cryo freezer using an air refrigerant cycle and using a high speed motor (BLDC).

본 발명의 상기 목적을 달성하기 위하여, 본 발명에 따른 고속모타(BLDC)를 이용한 공기 싸이클 창고용 저온 냉동기는 저온창고(1)와, 상기 저온창고(1)로부터 유입되는 공기 냉매를 압축하는 제1원심 공기압축기(3)와, 상기 제1원심 공기압축기(3)를 구동하는 고속모타(BLDC)(2), 상기 제1원심 공기압축기(3)에서 압축된 공기 냉매를 냉각하는 제1 열교환기(5), 상기 제1 열교환기(5)에서 냉각된 공기 냉매를 압축하는 제2 원심 공기압축기(7), 상기 제2 원심 공기압축기(7)에서 압축된 공기 냉매를 냉각하는 제2 열교환기(6), 그리고 제2 열교환기(6)에서 냉각된 공기 냉매를 팽창시킴으로써 추가로 냉각시켜 상기 저온참고(1)에 공급하는 구심 터빈(Radial inflow Turbine)(8)을 구비한다.In order to achieve the above object of the present invention, the cryogenic freezer for an air cycle warehouse using the high speed motor (BLDC) according to the present invention is a cold storage (1) and the agent for compressing the air refrigerant flowing from the cold storage (1) First heat exchanger for cooling the air centrifugal compressor (3), the high speed motor (BLDC) 2 for driving the first centrifugal air compressor (3), and the air refrigerant compressed in the first centrifugal air compressor (3). 5, a second centrifugal air compressor 7 for compressing the air refrigerant cooled in the first heat exchanger 5, and a second heat exchanger for cooling the air refrigerant compressed in the second centrifugal air compressor 7. And a centrifugal inflow turbine 8 which is further cooled by expanding the air refrigerant cooled in the second heat exchanger 6 to be supplied to the low temperature reference 1.

본 발명의 일 특징에 의하면, 상기 공기 싸이클 창고용 저온 냉동기는 고속모타(BLDC)(2)를 적용하여 상기 제1 원심 공기압축기(3)를 구비하며, 상기 고속모타(BLDC)(2)는 20,000 rpm 이상으로 설정된다.According to one aspect of the invention, the low temperature freezer for the air cycle warehouse is provided with the first centrifugal air compressor (3) by applying a high speed motor (BLDC) (2), the high speed motor (BLDC) (2) is It is set at 20,000 rpm or more.

본 발명의 다른 특징에 의하면, 상기 구심 터빈(8)으로부터 동력에 의하여 구동될 수 있도록 상기 제2 원심 공기압축기(7)는 상기 구심 터빈(8)에 연결된다.According to another feature of the invention, the second centrifugal air compressor 7 is connected to the centrifugal turbine 8 so that it can be driven by power from the centrifugal turbine 8.

상기 제1 및 제2 열교환기(5, 6)는 크로스 유동 방식이 사용되며, 상기 제1 및 제2 열교환기(5, 6)는 닥트를 통하여 창고 외부로부터 강제로 유입되며, 제1 및 제2 열교환기(5, 6)를 지나는 공기 냉매에 비하여 상대적으로 온도가 낮은 냉각 공기와 접촉함으로써 공기 냉매를 냉각한다. 상기 고속모타(BLDC)(2)를 적용한 공기 싸이클 창고용 저온 냉동기는 닥트를 통하여 상기 냉각 공기를 강제로 유입하기 위한 냉각 공기용 냉각 팬(4)을 추가로 구비한다.The first and second heat exchangers 5 and 6 are cross-flow type, and the first and second heat exchangers 5 and 6 are forcibly introduced from outside the warehouse through a duct. 2 The air refrigerant is cooled by contact with cooling air having a relatively low temperature as compared to the air refrigerant passing through the heat exchangers 5 and 6. The low temperature freezer for an air cycle warehouse to which the high speed motor (BLDC) 2 is applied is further provided with a cooling fan 4 for cooling air for forcibly introducing the cooling air through a duct.

상기 냉각 팬(4)은 상기 고속모타(BLDC)(2)에 연결되어 구동된다.The cooling fan 4 is connected to and driven by the high speed motor (BLDC) 2.

도1은 본 발명에 따른 고속모타를 적용한 공기 싸이클 창고용 저온냉동기를 보여주는 구성도1 is a block diagram showing a low temperature freezer for an air cycle warehouse to which the high speed motor according to the present invention is applied.

＜도면의 주요 부분에 대한 부호의 설명＞<Description of the code | symbol about the principal part of drawing>

1 : 저온창고 2 : 고속모타(BLDC)1: Low temperature warehouse 2: High speed motor (BLDC)

3 : 제1 원심 공기압축기 4 : 냉각 팬3: first centrifugal air compressor 4: cooling fan

5 : 제1 열교환기 6 : 제2 열교환기5: first heat exchanger 6: second heat exchanger

7 : 제2 원심 공기압축기 8 : 구심 터빈7 second centrifugal air compressor 8 centrifugal turbine

이하 본 발명에 따른 고속모타(BLDC)를 적용한 공기 싸이클 창고용 저온냉동기를 첨부된 도면을 참조하여 상세히 실명한다.Hereinafter, a low temperature freezer for an air cycle warehouse to which a high speed motor (BLDC) according to the present invention is applied will be described in detail with reference to the accompanying drawings.

도1은 본 발명에 따른 고속모타(BLDC)를 적용한 공기 싸이클 창고용 저온 냉동기를 보여주는 구성도이다. 도1을 참조하여 본 발명의 일실시예에 따른 고속모타(BLDC)를 적용한 공기 싸이클 창고용 저온냉동기는 식품 등이 냉동 및 냉장 저장되어 있는 저온창고(1), 저온창고(1)로부터 유입되는 공기 냉매를 압축하는 제1 원심 공기압축기(3), 제1 원심 공기압축기(3)를 구동하는 고속모타(BLDC)(2),상기 압축된 공기 냉매를 냉각하는 제1 열교환기(5), 제1 열교환기(5)에서 냉각된 공기 냉매를 재압축하는 제2 원심 공기압축기(7), 상기 재압축된 공기 냉매를 냉각하는 제2 열교환기(6), 그리고 제2 열교환기(6)에서 냉각된 냉매를 추가로 냉각시켜 상기 저온창고(1)에 공급하는 구심 터빈(8), 그리고 제1 및 제2 열교환기(5, 6)와 접촉하여 냉각되는 냉각 공기를 창고 외부로부터 강제로 유입하기 위한 냉각 팬(4)을 구비한다.1 is a block diagram showing a low temperature freezer for an air cycle warehouse to which a high speed motor (BLDC) according to the present invention is applied. Referring to FIG. 1, a cryogenic freezer for an air cycle warehouse to which a high-speed motor (BLDC) is applied according to an embodiment of the present invention is introduced from a cold warehouse (1) and a cold warehouse (1) where food and the like are frozen and refrigerated. A first centrifugal air compressor (3) for compressing air refrigerant, a high speed motor (BLDC) (2) for driving the first centrifugal air compressor (3), a first heat exchanger (5) for cooling the compressed air refrigerant, A second centrifugal air compressor (7) for recompressing the air refrigerant cooled in the first heat exchanger (5), a second heat exchanger (6) for cooling the recompressed air refrigerant, and a second heat exchanger (6) In the centrifugal turbine (8) for further cooling the refrigerant cooled in the supply to the low-temperature warehouse (1), and the cooling air cooled in contact with the first and second heat exchangers (5, 6) forcibly from outside the warehouse A cooling fan 4 for inflow is provided.

제1 원심 공기압축기(3)는 저온창고(1)로부터 유입되는 공기 냉매를 압축한다. 제1 원심 공기압축기(3)는 고속모타(BLDC)(2)에 의해 구동된다.The first centrifugal air compressor 3 compresses the air refrigerant flowing from the low temperature warehouse 1. The first centrifugal air compressor 3 is driven by a high speed motor (BLDC) 2.

제1 원심 공기압축기(3)에서 높은 압축비를 얻을 수 있도록 고속모타(BLDC)(2)에 연결되어 구동된다.In order to obtain a high compression ratio in the first centrifugal air compressor (3) is connected to the high speed motor (BLDC) (2) is driven.

본 발명에 따른 제1 원심 공기압축기(3)의 임펠러(도시하지 않음)는 공기 압축 효과를 발휘하기 위하여 바람직하게 고속모타(BLDC)(2)에 의해 20,000rpm 이상으로 회전된다.The impeller (not shown) of the first centrifugal air compressor 3 according to the present invention is preferably rotated by a high speed motor (BLDC) 2 to 20,000 rpm or more in order to exert an air compression effect.

제1 열교환기(5)는 고속모타(BLDC)(2)를 적용한 제1 원심 공기 압축기(3)에서 압축된 공기 냉매를 냉각하며, 제2 원심 공기압축기(7)는 제1 열교환기(5)에서 냉각된 공기 냉매를 2차로 압축한다. 제2 열교환기(6)는 고속 모타(2)를 적용한 제2 원심 공기압축기(7)에서 압축된 공기 냉매를 2차로 냉각하며, 이후 공기 냉매는 구심 터빈(8)에 의하여 팽창됨으로써 추가로 냉각되어 저온창고(1)로 회귀한다.The first heat exchanger (5) cools the air refrigerant compressed in the first centrifugal air compressor (3) to which the high speed motor (BLDC) 2 is applied, and the second centrifugal air compressor (7) is the first heat exchanger (5). The second step is to compress the air refrigerant cooled in The second heat exchanger 6 secondarily cools the air refrigerant compressed in the second centrifugal air compressor 7 to which the high speed motor 2 is applied, and then the air refrigerant is further cooled by being expanded by the centrifugal turbine 8. Return to the low temperature warehouse (1).

본 발명의 실시예에 따르면, 구심 터빈(8)의 샤프트(도시하지 않음)는 제2 원심 공기압축기(7)의 샤프트(도시하지 않음)와 연결되어 제2 원심 공기압축기(7)는 구심 터빈(8)의 팽창과정에서 발생되는 동력에 의하여 구동된다.According to an embodiment of the invention, the shaft (not shown) of the centrifugal turbine 8 is connected with the shaft (not shown) of the second centrifugal air compressor 7 so that the second centrifugal air compressor 7 is the centrifugal turbine. It is driven by the power generated in the expansion process of (8).

또한 본 발명에 따른 고속 모타를 적용한 공기 싸이클 창고용 저온냉동기의 제1 및 제2 열교환기(5, 6)는 무게를 최대한 줄이기 위하여 공기 대 공기 냉각 방식을 갖는 크로스 유동 방식(cross-flow type)을 사용한다.In addition, the first and second heat exchangers 5 and 6 of the cryogenic freezer for an air cycle warehouse to which the high-speed motor according to the present invention are applied have a cross-flow type having air-to-air cooling in order to reduce weight. Use

제1 및 제2 열교환기(5, 6)는 닥트(도시하지 않음)를 통하여 창고 외부로부터 강제로 유입되며 제1 및 제2 열교환기(5, 6)를 지나는 공기 냉매에 비하여 상대적으로 온도가 낮은 냉각 공기와 접촉함으로써 공기 냉매를 냉각한다. 상기 냉각 공기는 공기 순환용 냉각 팬(4)에 의하여 상기 닥트를 통해 창고 외부로부터 강제로 유입되어 제1 및 제2 열교환기(5, 6)와 열을 교환한 후 다시 창고 외부로 배출된다.The first and second heat exchangers 5 and 6 are forcibly introduced from the outside of the warehouse through a duct (not shown), and the temperature is relatively higher than that of the air refrigerant passing through the first and second heat exchangers 5 and 6. Cool the air refrigerant by contacting with low cooling air. The cooling air is forcibly introduced from the outside of the warehouse by the air circulation cooling fan 4 through the duct to exchange heat with the first and second heat exchangers 5 and 6 and then discharged out of the warehouse.

냉각 팬(4)은 상기 고속모타(BLDC)(2)에 의하여 구동될 수 있도록 고속모타(BLDC)(2)축에 연결된다.The cooling fan 4 is connected to the high speed motor (BLDC) 2 shaft to be driven by the high speed motor (BLDC) 2.

본 발명에 따른 고속모타(BLDC)를 적용한 공기 싸이클 창고용 저온냉동기에 의하면, 공기를 냉매로 사용함으로써 프레온가스 등을 냉매로 사용하는 경우에 비하여 환경에 미치는 영향이 적으며 냉동 싸이클이 효과적으로 수행된다.According to the cryogenic freezer for an air cycle warehouse to which the high speed motor (BLDC) according to the present invention is applied, the refrigeration cycle is effectively performed by using air as a refrigerant and having less impact on the environment than when using a freon gas as a refrigerant. .

이상에서는 실시 예를 이용하여 본 발명이 설명되었으나, 본 발명이 상기 실시 예에 의하여 한정되지 아니하고 본 발명의 사상 및 범위 내에서 다양한 변형예가 실시될 수 있음은 본 발명의 분야에서 통상의 지식을 가진 자에게 있어서 명확하다.Although the present invention has been described above by using an embodiment, the present invention is not limited to the above embodiments, and various modifications can be made within the spirit and scope of the present invention. It is clear to him.

Claims (7)

저온창고(1);Low temperature warehouse (1); 상기 저온창고(1)로부터 유입되는 공기 냉매를 압축하는 고속모타(BLDC)를 적용한 제1 원심 공기압축기(3);A first centrifugal air compressor (3) to which a high speed motor (BLDC) for compressing the air refrigerant flowing from the low temperature warehouse (1) is applied; 상기 제1 원심 공기압축기(3)를 구동시키는 고속모타(BLDC)(2);A high speed motor (BLDC) 2 for driving the first centrifugal air compressor 3; 상기 고속모타(BLDC)(2)를 적용한 제1 원심 압축기(3)에서 압축된 공기 냉매를 냉각하는 제1 열교환기(5);A first heat exchanger (5) cooling the air refrigerant compressed by the first centrifugal compressor (3) to which the high speed motor (BLDC) 2 is applied; 상기 제1 열교환기(5)에서 냉각된 공기 냉매를 압축하는 제2 원심 공기압축기(7);A second centrifugal air compressor (7) for compressing the air refrigerant cooled in the first heat exchanger (5); 상기 제2 원심 공기압축기(7)에서 압축된 공기 냉매를 냉각하는 제2 열교환기(6); 그리고A second heat exchanger (6) for cooling the air refrigerant compressed by the second centrifugal air compressor (7); And 상기 제2 열교환기(6)에서 냉각된 공기 냉매를 팽창시킴으로써 추가로 냉각시켜 상기 저온창고(1)에 공급하는 구심 터빈(8)을 구비하는 것을 특징으로 하는 고속모타(BLDC)를 적용한 공기 싸이클 창고용 저온 냉동기.An air cycle to which a high speed motor (BLDC) is applied is provided with a centrifugal turbine (8) which further cools by expanding the air refrigerant cooled in the second heat exchanger (6) and supplies it to the low temperature warehouse (1). Low temperature freezer for warehouse. 제1항에 있어서, 상기 창고용 저온냉동기는 고속모타(BLDC)(2)를 적용하는 것을 특징으로 하는 창고동 저온냉동기.The cold storage freezer according to claim 1, wherein the cold storage freezer (BLDC) applies a high speed motor (BLDC). 제1항에 있어서, 상기 구심 터빈(8)으로부터 동력에 의하여 구동될 수 있도록 상기 제2 원심 공기 압축기(7)가 상기 구심 터빈(8)에 연결되는 것을 특징으로 하는 고속모타(BLDC)를 적용한 공기 싸이클 창고용 저온냉동기.2. The high speed motor (BLDC) according to claim 1, wherein the second centrifugal air compressor (7) is connected to the centrifugal turbine (8) so as to be driven by power from the centrifugal turbine (8). Low temperature freezer for air cycle storage. 제1항에 있어서, 상기 제1 및 제2 열교환기(5, 6)는 크로스 유동방식인 것을 특징으로 하는 고속모타(BLDC)를 적용한 공기 싸이클 창고용 저온냉동기.2. The cryogenic freezer for air cycle storage according to claim 1, wherein the first and second heat exchangers (5, 6) are cross flow. 제1항에 있어서, 상기 제1 및 제2 열교환기(5, 6)는 닥트를 통하여 대기로부터 강제로 유입되며 제1 및 제2 열교환기(5, 6)를 지나는 공기 냉매에 비하여 상대적으로 온도가 낮은 냉각 공기와 접촉함으로써 공기 냉매를 냉각하는 것을 특징으로 하는 고속모타(BLDC)를 적용한 공기 싸이클 창고용 저온냉동기.The method of claim 1, wherein the first and second heat exchangers (5, 6) are forced into the atmosphere from the atmosphere through a duct and are relatively temperature compared to the air refrigerant passing through the first and second heat exchangers (5, 6). A low temperature freezer for an air cycle warehouse to which a high speed motor (BLDC) is applied, wherein the air refrigerant is cooled by contacting with low cooling air. 제5항에 있어서, 상기 차량용 냉동기는 닥트를 통하여 상기 냉각 공기를 강제로 유입하기 위한 공기 냉각용 냉각 팬(4)을 추가로 구비하는 것을 특징으로 하는 고속모타(BLDC)를 적용한 공기 싸이클 창고용 저온냉동기.6. The air cycle warehouse according to claim 5, wherein the vehicle refrigerator further includes an air cooling cooling fan 4 for forcibly introducing the cooling air through a duct. Low temperature freezer. 제1항에 있어서, 상기 냉각 팬은 고속모타(BLDC)(2)축에 연결하여 구동되는 것을 특징으로 하는 고속모타(BLDC)를 적용한 공기 싸이클 저온냉동기.The air cycle cryocooler of claim 1, wherein the cooling fan is driven by being connected to a high speed motor (BLDC) shaft.
KR1020030019766A 2003-03-28 2003-03-28 Air cycle low temperature refrigerator for warehouse using high speed brushless direct current motor KR20030031540A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1771525A2 (en) * 2004-01-28 2007-04-11 IGC-Polycold Systems Inc. Refrigeration cycle utilizing a mixed inert component refrigerant
EP1783444A1 (en) * 2004-07-30 2007-05-09 Mitsubishi Heavy Industries, Ltd. Cooling chamber and air refrigerant type cooling system
US8225619B2 (en) 2004-07-30 2012-07-24 Mitsubishi Heavy Industries, Ltd Air-refrigerant cooling apparatus with a warm gas defrost bypass pipe
US9016083B2 (en) 2004-11-29 2015-04-28 Mitsubishi Heavy Industries, Ltd. Air refrigerant type freezing and heating apparatus
CN105962640A (en) * 2016-05-10 2016-09-28 安徽坤昌家具有限公司 Guest dining table
US10006646B2 (en) 2015-04-30 2018-06-26 Samsung Electronics Co., Ltd. Outdoor unit of air conditioner and control device for the outdoor unit

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1771525A2 (en) * 2004-01-28 2007-04-11 IGC-Polycold Systems Inc. Refrigeration cycle utilizing a mixed inert component refrigerant
EP1771525B1 (en) * 2004-01-28 2014-08-13 Brooks Automation, Inc. Refrigeration cycle utilizing a mixed inert component refrigerant
EP1783444A1 (en) * 2004-07-30 2007-05-09 Mitsubishi Heavy Industries, Ltd. Cooling chamber and air refrigerant type cooling system
EP1783444A4 (en) * 2004-07-30 2011-10-05 Mitsubishi Heavy Ind Ltd Cooling chamber and air refrigerant type cooling system
US8225619B2 (en) 2004-07-30 2012-07-24 Mitsubishi Heavy Industries, Ltd Air-refrigerant cooling apparatus with a warm gas defrost bypass pipe
US9016083B2 (en) 2004-11-29 2015-04-28 Mitsubishi Heavy Industries, Ltd. Air refrigerant type freezing and heating apparatus
US10006646B2 (en) 2015-04-30 2018-06-26 Samsung Electronics Co., Ltd. Outdoor unit of air conditioner and control device for the outdoor unit
CN105962640A (en) * 2016-05-10 2016-09-28 安徽坤昌家具有限公司 Guest dining table
CN105962640B (en) * 2016-05-10 2018-07-13 安徽坤昌家具有限公司 A kind of dining table entertained guests

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